CN112870030B - Children walking training auxiliary stay structure - Google Patents

Abstract

The invention provides an auxiliary supporting structure for children walking training, which comprises a base, a lifting supporting mechanism and a moving speed limiting mechanism. The invention can solve the following problems in the walking training of children: a. the children walking training instrument is easy to bump when aiming at an uneven road surface, is not beneficial to the experience of children in training walking, and has the phenomenon of rollover of the children walking training instrument to cause children to be injured; b. present children's walking training apparatus just provides it and can move on subaerial, does not consider children's safety consciousness and lacks, when the translation rate is too fast, turns on one's side easily, perhaps hits the object of surrounding environment, causes children's injury.

Description

A kind of auxiliary support structure for children's walking training

technical field

The invention relates to the technical field of auxiliary equipment for children, in particular to an auxiliary support structure for children's walking training.

Background technique

Children's walking aids are designed to help children learn to walk, or for children with standing and walking difficulties. With the help of children's walking aids, children can learn to walk, which can protect children from practicing walking without assistance, and improve children's standing and walking ability. At the same time, when practicing walking with the aid of children's walking training aids, parents need to be monitored, guided and encouraged by the side.

At present, the following problems exist in children's walking training: a. Children's walking training equipment is prone to bumps when targeting uneven road surfaces, which is not conducive to children's experience when training and walking. At the same time, there is a phenomenon that children's walking training equipment rolls over, causing children to be injured. , and different children have different heights, and with the growth of children, their height will gradually increase, resulting in the existing children's walking training equipment can not meet their use; b. The current existing children's walking training equipment It is only provided that it can move on the ground, and it does not take into account the lack of children's safety awareness. When the movement speed is too fast, it is easy to roll over or hit objects in the surrounding environment, causing injury to children.

SUMMARY OF THE INVENTION

(1) Technical problems to be solved

The invention provides an auxiliary support structure for children's walking training, which can solve the following problems in children's walking training: a. Children's walking training equipment is easy to bump when targeting uneven road surfaces, which is not conducive to children's walking training experience; At the same time, there is a phenomenon that children's walking training equipment rolls over, causing children to be injured, and different children have different heights, and as children grow, their height will gradually increase, resulting in the existing children's walking training equipment cannot meet the requirements Its use; b. The existing children's walking training equipment only provides that it can move on the ground, and does not take into account the lack of children's safety awareness. When the moving speed is too fast, it is easy to roll over or hit the surrounding objects, Injury to children.

(2) Technical solutions

In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an auxiliary support structure for children's walking training, including a base, a lifting support mechanism and a moving speed-limiting mechanism, the base as a whole is a ring-shaped rectangular structure, and the upper end of the base is fixed A lifting support mechanism is installed, and a number of moving speed-limiting mechanisms are evenly arranged along the edge of the lower end surface of the base; wherein:

The lifting support mechanism includes a supporting plate, a fixed block, a lifting bar, a locking branch chain, a moving block, a sliding rod, an adjustment groove, an adjustment spring, an anti-collision spring and an anti-collision plate. There are left and right symmetrical adjustment grooves, and a sliding rod is fixedly installed in the adjustment groove, a sliding block is set on the sliding rod, and an adjusting spring is set on the sliding rod, and one end of the adjusting spring is away from the moving block. The end face of the center of the base is connected, and the other end is fixedly connected to the side wall of the adjustment groove away from the center of the base. The upper end face of the moving block is connected with a lifting bar through a ball hinge. The center of the support plate is provided with a through hole that is convenient for children to stand, a fixed block is installed symmetrically on the lower end surface of the support block, and the upper end of the lifting bar rotatably connected with the left mobile block is connected to the right side through a ball hinge. The fixed block is rotatably connected, the upper end of the lifting bar rotatably connected with the right moving block is rotatably connected with the left fixed block through a ball hinge, and the junction of the two cross-arranged lifting bars is connected by a pin shaft. The two crossed lifting bars are provided with locking branches, the outer side wall of the base is evenly connected with an anti-collision spring in the circumferential direction, and the other end of the anti-collision spring is fixed on the anti-collision plate. The whole body of the anti-collision plate is an annular shape structure, the anti-collision plate is fixedly installed on the outer side wall of the base, and the anti-collision plate has a certain buffer elasticity.

The moving speed-limiting mechanism includes a connecting seat, a rotating block, a fixed shaft, a stopper, a mounting seat, a shock-absorbing spring, a wheel hub assembly, a speed-limiting branch chain, an auxiliary branch chain, a mounting shaft and a tire. A connecting seat is evenly fixed at its edge, the connecting seat is fixed on the lower end surface of the base by bolts, a rotating block is rotatably connected to the lower end surface of the connecting seat, a mounting seat is arranged under the rotating block, and the upper end of the fixed shaft is fixed On the rotating block, a round hole is formed on the upper end surface of the bottom of the mounting seat, the lower end of the fixed shaft slides through the circular hole on the mounting seat, and the lower end of the fixed shaft is fixedly welded with a stopper to prevent the mounting seat from falling off. A shock-absorbing spring is sleeved on the fixed shaft, and the shock-absorbing spring is located between the rotating block and the top of the mounting seat. The mounting seat is a triangular structure as a whole, and the middle part of the lower end is a hollow structure. A wheel hub assembly, a mounting shaft is fixedly connected to the middle of the two sides of the wheel hub assembly, the other end of the mounting shaft is fixed on the mounting seat through a bearing, the outer side wall of the wheel hub assembly is mounted with a tire that facilitates the rotation of the wheel hub assembly, the wheel hub A speed-limiting branch chain and an auxiliary branch chain are set on the component.

Preferably, the locking branch chain includes a locking block, an annular groove, a spacer block and a locking bolt, the locking block is an annular structure, an annular groove is formed on the locking block, and the lifting bar is There are threaded holes, two crossed lifting bars are matched with one of the locking blocks, one end of the locking bolts passes through the annular groove and is threaded with the threaded holes on the lifting blocks, and the locking bolts are A spacer block is sleeved, and the spacer block is located between the locking block and the cap of the locking bolt.

Preferably, the hub assembly includes a rotating shaft, a connecting block and a mounting ring, both ends of the rotating shaft are fixedly connected to the mounting shaft, a connecting block is fixedly welded at the center of the outer side wall of the rotating shaft, and the connecting block is a circular ring A mounting ring is fixedly welded on the outer sidewall of the connecting block, and a tire is mounted on the outer sidewall of the mounting ring.

Preferably, the speed-limiting branch chain includes a No. 1 telescopic rod, a No. 1 spring, a speed-limiting block, a friction plate, a spring rod, a fixed seat and a connecting rod, and the outer wall of the shaft is uniformly fixed and installed in the circumferential direction at the front and rear sides. There is a No. 1 telescopic rod. The No. 1 telescopic rod on the front and rear sides of the rotating shaft is mirrored with the connecting block as the center. The other end of the No. 1 telescopic rod is fixed and welded with a speed-limiting block. Spring, the two ends of the No. 1 spring are respectively fixed on the rotating shaft and the speed limit block, the end face of the speed limit block facing the connecting block is set as an inclined surface, and the inclined surface is inclined from top to bottom toward the direction away from the connecting block , a connecting rod is uniformly fixed and welded in the circumferential direction along the rotating shaft relative to the inner side wall of the mounting seat. A plurality of spring rods are evenly arranged on the other side of the seat, the other end of the spring rods is fixedly installed on the friction plate, the other side of the friction plate has a certain distance from the connecting block, and the inclined surface of the speed limit block is connected to the friction plate. The one side end face of the friction plate is in contact, and the speed limiting block is located between the friction plate and the fixed seat.

Preferably, the auxiliary branch chain includes an auxiliary groove, a No. 2 telescopic rod, a No. 2 spring, an auxiliary block and a friction block, and a plurality of auxiliary grooves are evenly opened in the circumference of the connecting block along its rotating shaft. A No. 2 telescopic rod is arranged in the auxiliary groove. One end of the No. 2 telescopic rod is fixed on the side wall of the auxiliary groove on one side of the rotating shaft, and the other end is fixed and welded on the auxiliary block. The No. 2 spring rod is sleeved with two No. spring, friction blocks are fixedly installed on the front and rear side walls of the auxiliary block, and the friction blocks are separated from the inner side wall of the installation ring at a certain distance.

Preferably, a rotating groove is formed on the lower end surface of the connecting seat, a baffle plate is fixedly installed on the upper end of the rotating block, and the rotating block rotates in the rotating groove on the connecting seat through the baffle plate.

(3) Beneficial effects

1. The present invention provides a kind of auxiliary support structure for children's walking training, which can solve the following difficulties when children's walking training: a. Children's walking training equipment is easy to bump when aiming at uneven road surfaces, which is not conducive to children's walking training. At the same time, there is a phenomenon of children's walking training equipment rolling over, causing children to be injured, and different children have different heights, and as children grow, their height will gradually increase, resulting in existing children's walking training equipment. It can not meet its use; b. The existing children's walking training equipment only provides that it can move on the ground, and does not take into account the lack of children's safety awareness. When the moving speed is too fast, it is easy to roll over or hit the surrounding environment. object, causing injury to the child.

2. The lifting and supporting chain mechanism designed by the present invention uses lifting bars to support the supporting plate to ensure that the supporting plate can withstand a certain strength of force, and at the same time, when targeting children of different heights, the supporting plate is limited by locking the supporting chain. The height can be adjusted artificially to adapt to children of different heights. At the same time, an anti-collision plate is arranged on the outer side wall of the base to reduce the impact on children when the base hits surrounding objects, and also effectively avoid side effects. turn.

3. The moving speed-limiting mechanism designed by the present invention utilizes the centrifugal force of different sizes generated by different speeds when the hub rotates. When the speed is too fast, the speed-limiting block moves under the action of centrifugal force and pushes the friction plate to contact the hub, increasing the speed. Friction force, in order to achieve the purpose of deceleration, limit the speed within a certain range, and ensure the safety of children. speed, to ensure that the wheel hub speed is controlled within a certain range when children practice walking, and to protect children's personal safety.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the three-dimensional structure diagram of the present invention;

Fig. 2 is the front sectional view of the present invention;

Fig. 3 is the three-dimensional structure diagram of the hub assembly in the specification of the present invention;

4 is a side cross-sectional view of the mounting seat, the speed-limiting branch chain, the auxiliary branch chain and the wheel hub assembly in the specification of the present invention;

Fig. 5 is the partial enlarged view of the A part of accompanying drawing 2 of the specification of the present invention;

Fig. 6 is the partial enlarged view of B of accompanying drawing 4 of the specification of the present invention;

Fig. 7 is the partial enlarged view of C of accompanying drawing 5 of the specification of the present invention;

Fig. 8 is a cross-sectional view of a locking branch chain in the specification of the present invention.

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings. During this process, in order to ensure the clarity and convenience of the description, we may exaggerate the width of the lines or the size of the components in the illustrations.

In addition, the following terms are defined based on the functions in the present invention, and may be different depending on the user, the operator's intention, or convention. Therefore, these terms are defined based on the entire content of this specification.

As shown in Figures 1 to 8, an auxiliary support structure for children's walking training includes a base 1, a lifting support mechanism 2 and a moving speed limiting mechanism 3. The base 1 is an annular rectangular structure as a whole, and the upper end of the base 1 A lifting support mechanism 2 is fixedly installed, and a number of moving speed limiting mechanisms 3 are evenly arranged on the lower end surface of the base 1 along its edge.

The lifting support mechanism 2 includes a support plate 21, a fixed block 22, a lifting bar 23, a locking branch chain 24, a moving block 25, a sliding rod 26, an adjustment groove 27, an adjustment spring 28, an anti-collision spring 29 and an anti-collision The plate 20, the upper end of the base 1 is provided with a left-right symmetrical adjustment groove 27 at the front and rear ends. The adjustment groove 27 is fixedly installed with a sliding rod 26. The rod 26 is sleeved with an adjustment spring 28, one end of the adjustment spring 28 is connected with the end face of the moving block 25 away from the center of the base 1, and the other end is fixedly connected to the side wall of the adjustment groove 27 away from the center of the base 1. The moving block The upper end surface of 25 is rotatably connected with a lifting bar 23 by means of a ball hinge. A support plate 21 is provided just above the base 1. The center of the support plate 21 is provided with a through hole for children to stand. The lower end surface of the support block A fixed block 22 is installed symmetrically on the left and right, and the upper end of the lifting bar 23 rotatably connected with the left moving block 25 is rotatably connected with the right fixed block 22 through a ball hinge. The upper end of the lifting bar 23 is rotatably connected to the left fixing block 22 through a ball hinge. A locking branch chain 24 is provided; the locking branch chain 24 includes a locking block 241, an annular groove 242, a spacer 243 and a locking bolt 244, the locking block 241 is an annular structure, and the locking block 241 is provided with an annular groove 242, the lifting bar 23 is provided with a threaded hole, two crossed lifting bars 23 are matched with one of the locking blocks 241, and one end of the locking bolt 244 passes through the annular groove 242 is threaded with the threaded hole on the lifting block, the locking bolt 244 is sleeved with a spacer block 243, and the spacer block 243 is located between the locking block 241 and the cap of the locking bolt 244; the base 1. An anti-collision spring 29 is evenly and fixedly connected to the outer side wall in the circumferential direction, and the other end of the anti-collision spring 29 is fixed on the anti-collision plate 20. Fixedly mounted on the outer side wall of the base 1 , the crash plate 20 has a certain buffer elasticity.

When working, manually turn the locking bolt 244 with the help of a wrench, so that the cushion block 243 no longer presses against the locking block 241, so that a certain gap is formed between the locking block 241 and the lifting bar 23, which is convenient for the rotation of the lifting bar 23. By adjusting the spring 28 and manually pressing the lift bar 23 at the upper end of the support plate 21 to rotate through the middle pin shaft, the height adjustment of the support plate 21 is realized. 26 moves up, when the supporting plate 21 moves down, the moving block 25 will compress the adjusting spring 28 to make it in a compressed state, when the supporting plate 21 moves up, the adjusting spring 28 in the compressed state has the effect of pushing the moving block 25 force, so that the moving block 25 drives the lifting bar 23 to rotate, so that the supporting plate 21 moves up. When it is adjusted to an appropriate position, manually screw the locking bolt 244 with the help of a wrench, so that the locking bolt 244 is squeezed and locked through the spacer block 243. Block 241, causing the locking block 241 to be in close contact with the lifting bar 23, and restricting the rotation of the lifting bar 23 through the friction between the locking block 241 and the lifting bar 23, and finally realizing the height adjustment of the support plate 21 and fixing it, so that children grow Fast, its elevation will gradually increase, so the support plate 21 needs to be elevated in order to be suitable for children to use. An anti-collision plate 20 is arranged on the outer side wall of the base 1, and an anti-collision spring 29 is arranged between the anti-collision plate 20 and the base 1. When the outer wall of the base 1 collides with a foreign object, the anti-collision plate 20 and the anti-collision spring 29 pass through the collision plate 20 and the anti-collision spring 29. , reducing the impact feeling received by the child, and at the same time effectively preventing the structure from overturning and protecting the physical safety of the child.

The moving speed limiting mechanism 3 includes a connecting seat 31, a rotating block 32, a fixed shaft 33, a block 34, a mounting seat 35, a shock absorbing spring 36, a wheel hub assembly 37, a speed limiting branch chain 38, an auxiliary branch chain 39, a mounting The shaft 3a and the tire 3b, the lower end surface of the base 1 is evenly fixed with a connecting seat 31 along its edge, the connecting seat 31 is fixed on the lower end surface of the base 1 by bolts, and the lower end surface of the connecting seat 31 is rotatably connected with a rotating block 32, the lower end surface of the connecting seat 31 is provided with a rotating groove, the upper end of the rotating block 32 is fixedly installed with a baffle plate 32c, the rotating block 32 rotates in the rotating groove on the connecting seat 31 through the baffle plate 32c, the A mounting seat 35 is arranged below the rotating block 32 , the upper end of the fixed shaft 33 is fixed on the rotating block 32 , a circular hole is formed on the upper end surface of the bottom of the mounting seat 35 , and the lower end of the fixed shaft 33 slides through the mounting seat 35 . A round hole, the lower end of the fixed shaft 33 is fixedly welded with a stopper 34 to prevent the mounting seat 35 from falling off, a shock absorbing spring 36 is sleeved on the fixed shaft 33, and the shock absorbing spring 36 is located between the rotating block 32 and the mounting seat 35. Between the tops, the mounting seat 35 has a triangular structure as a whole, and the middle part of the lower end is a hollow structure. The middle part of the lower end of the mounting seat 35 is provided with a hub assembly, and the middle parts of both sides of the hub assembly are fixedly connected with the mounting shaft 3a, so The other end of the mounting shaft 3a is fixed on the mounting seat 35 through a bearing, a tire 3b is mounted on the outer side wall of the hub assembly to facilitate the rotation of the hub assembly, and a speed-limiting branch chain 38 and an auxiliary branch chain 39 are arranged on the wheel hub assembly; The hub assembly 37 includes a rotating shaft 371, a connecting block 372 and a mounting ring 373. Both ends of the rotating shaft 371 are fixedly connected to the mounting shaft 3a, and a connecting block 372 is fixedly welded at the center of the outer side wall of the rotating shaft. 372 is a ring structure, a mounting ring 373 is fixedly welded on the outer side wall of the connecting block 372 , and the tire 3 b is mounted on the outer side wall of the mounting ring 373 .

During specific operation, the rotating block 32 can rotate on the connecting seat 31 through the baffle 32c, thereby driving the mounting seat 35 to rotate synchronously through the fixed shaft 33, so that the rotation of the tire 3b in each horizontal direction enables the structure to move anywhere on the horizontal plane, and at the same time There is unevenness on the horizontal plane, even potholes. When walking, there are bumps, which easily lead to rollover. A shock-absorbing spring 36 is set on the fixed shaft 33, so that the fixed shaft 33 can slide up and down on the mounting seat 35 to realize shock absorption. To avoid bumps and rollovers, a stopper 34 is provided at the lower end of the fixed shaft 33, which can effectively prevent the mounting seat 35 from sliding off the fixed shaft 33, and a speed-limiting branch 38 and an auxiliary branch 39 are set on the hub assembly. If the speed is too fast, the speed-limiting branch chain 38 and the auxiliary branch chain 39 will have a certain speed-limiting effect on the hub assembly, so that the rotation speed of the hub assembly is limited, and it can only walk and move within a certain range of speed, which effectively prevents children from moving quickly. Rollover, and collision with external objects, protect the personal safety of children.

The speed-limiting branch chain 38 includes a No. 1 telescopic rod 381, a No. 1 spring 382, a speed limit block 383, a friction plate 384, a spring rod 385, a fixed seat 386 and a connecting rod 387. A No. 1 telescopic rod 381 is uniformly fixed and installed in the circumferential direction. The No. 1 telescopic rod 381 on the front and rear sides of the rotating shaft 371 is mirrored with the connecting block 372 as the center, and the other end of the No. 1 telescopic rod 381 is fixed and welded with a speed-limiting block 383 , the No. 1 telescopic rod 381 is sleeved with a No. 1 spring 382, the two ends of the No. 1 spring 382 are respectively fixed on the rotating shaft 371 and the speed limit block 383, and the end face of the speed limit block 383 toward the connecting block 372 is set as The inclined surface is inclined from top to bottom toward the direction away from the connecting block 372. The connecting rod 387 is uniformly fixed and welded on the inner side wall of the mounting seat 35 along the rotating shaft 371 in the circumferential direction. The connecting rod 387 One-to-one correspondence with the speed-limiting blocks 383 , the other end of the connecting rod 387 is fixedly welded with a fixing seat 386 , the other side of the fixing seat 386 is evenly provided with a plurality of spring rods 385 , and the other end of the spring rod 385 is fixedly installed On the friction plate 384, the other side of the friction plate 384 has a certain distance from the connecting block 372, the inclined surface of the speed limiter block 383 is in contact with one end face of the friction plate 384, and the speed limiter block 383 is located in the friction plate 384. Between the plate 384 and the fixed seat 386; during specific work, when the wheel hub drives the tire 3b to roll on the ground, when the wheel hub rotation speed reaches a certain high level, under the action of centrifugal force, the No. 1 telescopic rod 381 will drive the limiter. The speed block 383 moves along the axis of the No. 1 telescopic rod 381 and in the direction of stretching the No. 1 spring 382 . The inclined surface of the speed limit block 383 will come into contact with the side of the friction plate 384 , and begin to press against the friction plate 384 toward the connecting block 372 . Move, and then the friction plate 384 rubs the connecting block 372 to limit the speed of the hub. When the speed drops, under the action of the No. 1 spring 382, the speed limiter block 383 moves toward the initial position, and then the spring rod 385 Under the action of , the friction plate 384 is moved away from the connecting block 372 , thereby releasing the speed limit of the wheel hub by the friction plate 384 .

The auxiliary branch chain 39 includes an auxiliary groove 391, a No. 2 telescopic rod 392, a No. 2 spring 393, an auxiliary block 394 and a friction block 395. The connecting block 372 has a plurality of uniformly opened circumferentially along its rotating shaft 371. Auxiliary groove 391, a No. 2 telescopic rod 392 is arranged in the auxiliary groove 391, one end of the No. 2 telescopic rod 392 is fixed on the side wall of the auxiliary groove 391 on one side of the rotating shaft 371, and the other end is fixed and welded on the auxiliary block 394 , the No. 2 spring 393 rod 385 is sleeved with a No. 2 spring 393, the front and rear side walls of the auxiliary block 394 are fixedly installed with a friction block 395, and the friction block 395 has a certain distance from the inner side wall of the mounting ring 373; During specific work, when the wheel hub drives the tire 3b to roll on the ground, when the wheel hub rotates at a high speed, under the action of centrifugal force, the No. 2 telescopic rod 392 drives the auxiliary block 394 along the axis of the No. 2 telescopic rod 392 And move in the direction of stretching the No. 2 spring 393 until the friction block 395 on the auxiliary block 394 is in contact with the inner wall of the mounting ring 373, so as to limit the friction speed to the inner wall of the mounting ring 373 to realize the speed limit of the hub. When the speed is reduced, Under the action of the No. 2 spring 393 , the friction block 395 is moved toward the initial position, and the speed limit on the inner wall of the mounting ring 373 is released.

The concrete steps of the present invention when working:

Step 1: Adjust the height of the support plate 21 through the lifting support mechanism 2 according to the height of the child;

The second step: the child stands in the ring of the base 1 through the through hole on the support plate 21, and then the child is restrained and supported on the support plate 21:

Step 3: When the child walks through the mobile speed limit, limit it to a certain speed range to prevent personal safety from being too fast.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. an auxiliary support structure for children's walking training, comprising a base (1), a lifting support mechanism (2) and a moving speed-limiting mechanism (3), characterized in that: the base (1) is an annular rectangular structure as a whole, A lifting support mechanism (2) is fixedly installed on the upper end of the base (1), and a plurality of moving speed-limiting mechanisms (3) are evenly arranged on the lower end surface of the base (1) along its edge; wherein: The lifting and supporting mechanism (2) comprises a supporting plate (21), a fixing block (22), a lifting bar (23), a locking branch chain (24), a moving block (25), a sliding rod (26), an adjustment A slot (27), an adjustment spring (28), an anti-collision spring (29) and an anti-collision plate (20), the upper end of the base (1) is provided with a left-right symmetrical adjustment slot (27) at the front and rear ends. A sliding rod (26) is fixedly installed in the adjusting groove (27), a moving block (25) is slidably sleeved on the sliding rod (26), and an adjusting spring (28) is sleeved on the sliding rod (26). One end of the adjustment spring (28) is connected to the end face of the moving block (25) away from the center of the base (1), and the other end is fixedly connected to the side wall of the adjustment groove (27) away from the center of the base (1). ) A lifting bar (23) is rotatably connected to the upper end surface by a ball hinge, a support plate (21) is arranged directly above the base (1), and a through hole is opened in the center of the support plate (21) for children to stand. A fixed block (22) is installed symmetrically on the lower end surface of the supporting block, and the upper end of the lifting bar (23), which is rotatably connected with the left moving block (25), is connected to the right fixed block (22) through a ball hinge ) is rotatably connected, and the upper end of the lifting bar (23) rotatably connected with the right moving block (25) is rotatably connected with the left fixing block (22) through a ball hinge. (23) The junction is rotated and matched by the pin shaft, the two crossed lifting bars (23) are provided with locking branches (24), and the outer side wall of the base (1) is evenly fixed in the circumferential direction. A spring (29), the other end of the anti-collision spring (29) is fixed on the anti-collision plate (20), the anti-collision plate (20) is an annular shape structure as a whole, and the anti-collision plate (20) is fixed Installed on the outer side wall of the base (1), the anti-collision plate (20) has a certain buffer elasticity; The moving speed limiting mechanism (3) includes a connecting seat (31), a rotating block (32), a fixed shaft (33), a stopper (34), a mounting seat (35), a shock-absorbing spring (36), and a wheel hub assembly (37), a speed-limiting branch chain (38), an auxiliary branch chain (39), a mounting shaft (3a) and a tire (3b), a connecting seat (31) is evenly fixed on the lower end surface of the base (1) along its edge , the connecting seat (31) is fixed on the lower end surface of the base (1) by bolts, the lower end surface of the connecting seat (31) is rotatably connected with a rotating block (32), and a mounting seat is arranged below the rotating block (32) (35), the upper end of the fixed shaft (33) is fixed on the rotating block (32), the upper end surface of the bottom of the mounting seat (35) is provided with a circular hole, and the lower end of the fixed shaft (33) slides through the mounting seat (35). 35), the lower end of the fixed shaft (33) is fixedly welded with a stopper (34) to prevent the mounting seat (35) from falling off, and a shock-absorbing spring (36) is sleeved on the fixed shaft (33), The shock-absorbing spring (36) is located between the rotating block (32) and the top of the mounting seat (35). A wheel hub is arranged in the middle of the lower end, a mounting shaft (3a) is fixedly connected to the middle of the two sides of the wheel hub, the other end of the mounting shaft (3a) is fixed on the mounting seat (35) through a bearing, and the outer side wall of the wheel hub is mounted on the There are tires (3b) that facilitate the rotation of the wheel hub, and a speed-limiting branch chain (38) and an auxiliary branch chain (39) are arranged on the wheel hub; The hub assembly (37) includes a rotating shaft (371), a connecting block (372) and a mounting ring (373), both ends of the rotating shaft (371) are fixedly connected to the mounting shaft (3a), and the outer side wall of the rotating shaft A connecting block (372) is fixedly welded at the center, the connecting block (372) is a ring structure, and a mounting ring (373) is fixedly welded on the outer side wall of the connecting block (372), and the outer side of the mounting ring (373) is fixedly welded. A tire (3b) is mounted on the wall; The speed-limiting branch chain (38) includes a No. 1 telescopic rod (381), a No. 1 spring (382), a speed limit block (383), a friction plate (384), a spring rod (385), and a fixed seat (386) and a connecting rod (387), a No. 1 telescopic rod (381) is evenly fixed circumferentially on the front and rear sides of the outer side wall of the rotating shaft (371), and a No. 1 telescopic rod (381) is installed on the front and rear sides of the rotating shaft (371). With the connecting block (372) as the center of the mirror image distribution, the other end of the No. 1 telescopic rod (381) is fixedly welded with a speed-limiting block (383), and the No. 1 telescopic rod (381) is sleeved with a No. 1 spring (382), Both ends of the No. 1 spring (382) are respectively fixed on the rotating shaft (371) and the speed limiting block (383). The surface is inclined from top to bottom toward the direction away from the connecting block (372), and a connecting rod (387) is uniformly fixed and welded on the inner side wall of the mounting seat (35) along the rotating shaft (371) as the center. The rod (387) and the speed limiting block (383) are arranged in one-to-one correspondence, the other end of the connecting rod (387) is fixedly welded with a fixing seat (386), and the other side of the fixing seat (386) is evenly provided with a plurality of springs A rod (385), the other end of the spring rod (385) is fixedly mounted on the friction plate (384), and the other side of the friction plate (384) has a certain distance from the connecting block (372). (383) The inclined surface is in contact with one end surface of the friction plate (384), and the speed limiting block (383) is located between the friction plate (384) and the fixed seat (386). 2. A child walking training auxiliary support structure according to claim 1, characterized in that: the locking branch chain (24) comprises a locking block (241), an annular groove (242), a cushion block (243) ) and a locking bolt (244), the locking block (241) is an annular structure, an annular groove (242) is formed on the locking block (241), and a threaded hole is formed on the lifting bar (23) , the two crossed lifting bars (23) are matched with one of the locking blocks (241), and one end of the locking bolts (244) passes through the annular groove (242) and is threaded with the threaded holes on the lifting block In cooperation, a spacer (243) is sleeved on the locking bolt (244), and the spacer (243) is located between the locking block (241) and the cap of the locking bolt (244). 3. The auxiliary support structure for children's walking training according to claim 1, wherein the auxiliary branch chain (39) comprises an auxiliary groove (391), a No. 2 telescopic rod (392), a No. 2 spring ( 393), the auxiliary block (394) and the friction block (395), a plurality of auxiliary grooves (391) are evenly opened in the inner circumference of the connecting block (372) along the center of the rotation axis (371) of the connecting block (372), and the auxiliary grooves (391) ) is provided with a No. 2 telescopic rod (392), one end of the No. 2 telescopic rod (392) is fixed on the side wall of the auxiliary groove (391) located on one side of the rotating shaft (371), and the other end is fixed and welded to the auxiliary block (394). ), the No. 2 spring (393) rod (385) is sleeved with a No. 2 spring (393), the front and rear side walls of the auxiliary block (394) are fixedly installed with friction blocks (395), and the friction blocks (395) has a certain distance from the inner side wall of the mounting ring (373). 4. A child walking training auxiliary support structure according to claim 1, characterized in that: a rotating groove is provided on the lower end surface of the connecting seat (31), and a baffle plate is fixedly installed on the upper end of the rotating block (32). (32c), the rotating block (32) rotates in the rotating groove on the connecting seat (31) through the baffle plate (32c).

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