CN109099076B

CN109099076B - A moving shaft brake

Info

Publication number: CN109099076B
Application number: CN201811158476.2A
Authority: CN
Inventors: 申军立; 徐振邦; 韩春杨; 吴清文; 韩康; 韩哈斯敖其尔; 谭向全
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2021-01-05
Anticipated expiration: 2038-09-30
Also published as: CN109099076A

Abstract

The invention discloses a moving shaft brake, which comprises an end cover and a suction cup which are parallel to each other and have an interval, the end cover is fixedly arranged, the shaft body vertically passes through the through hole in the middle of the end cover and the through hole in the middle of the suction cup in sequence, and can pass through Free movement in the hole, a moving rod parallel to the end cover is arranged in the interval, and a driving device and a transmission device are also included. Snap to the shaft to limit the movement of the shaft. When braking is required, the driving device drives the end cover and the suction cup to approach each other, and drives the moving rod to stick to the shaft body. Since the end cover is fixedly arranged, and the end cover and the suction cup are close to each other, the moving rod will be clamped, so that the moving rod cannot move axially. Move, and then limit the axial movement of the shaft, avoid unnecessary displacement of the shaft, prevent the collision of the shaft, ensure the stable operation of the equipment, and improve the safety and reliability of the equipment.

Description

Brake for movable shaft

Technical Field

The invention relates to the field of brakes, in particular to a movable shaft brake.

Background

In the field of moving mechanisms, when it is desired to stop the relative movement between the relatively moving parts, a brake may be used for braking. The brake keeps a closed state and can play a role in continuous braking; after the brake is opened, the relative motion part can restore the free motion state.

The brake of the shaft type moving part mainly comprises a band-type brake for limiting the relative rotation of the shaft, namely the rotation of the shaft body is limited. Because there is certain space reservation in the installation, the axis body not only can carry out rotary motion, can produce axial displacement simultaneously, but current stopper can not restrict axial displacement, leads to the axis body collision and influences the normal operating of equipment.

Therefore, how to provide a moving shaft brake capable of limiting the axial movement of a shaft body is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a moving shaft brake, which drives a sucker and an end cover to approach each other, so that a moving rod is tightly attached to a shaft body to limit the movement of the shaft body, and the moving rod cannot move axially through the fixedly arranged end cover to further limit the axial movement of the shaft body.

In order to solve the technical problem, the invention provides a moving shaft brake which comprises an end cover and a sucker, wherein the end cover and the sucker are parallel to each other and are provided with intervals, the end cover is fixedly arranged, a shaft body sequentially and vertically penetrates through a through hole in the middle of the end cover and a through hole in the middle of the sucker and can freely move in the through hole, a moving rod parallel to the end cover is arranged in each interval, the moving shaft brake further comprises a driving device and a transmission device, the driving device is used for driving the end cover and the sucker to be close to each other, and the driving device enables a braking end of the moving rod to be close to and tightly attached to the shaft body so as to limit the movement.

Preferably, the end cover is kept away from install hollow base on the terminal surface of one side of sucking disc, the base middle part is provided with and is used for the through-hole that the axis body passed perpendicularly, drive arrangement including set up in inductance coils in the base, the sucking disc specifically is the magnetic disk, can attract after inductance coils circular telegram the sucking disc to the end cover removes.

Preferably, a guide rod parallel to the shaft body is arranged in the gap, one end of the guide rod is fixedly connected with the end cover, the other end of the guide rod penetrates through the through hole in the sucker and is connected with a nut, and a reset spring is sleeved on the guide rod.

Preferably, the device comprises two symmetrically arranged guide rods and two symmetrically arranged moving rods, and a connecting line of the two moving rods is perpendicular to a connecting line of the two guide rods.

Preferably, the base is provided at the outer circumference thereof with a plurality of connecting lug plates.

Preferably, the braking end of the moving rod is provided with an arc-shaped plate matched with the shaft body in shape, and a friction pad is arranged on the arc-shaped plate.

Preferably, transmission including set up in the interval and extending direction all be on a parallel with the uide bushing and the guide post of axis body, the one end fixed connection of uide bushing the end cover, the other end of uide bushing is provided with the guiding hole, be provided with on the curb plate of uide bushing and run through the guide way of uide bushing, the link of carriage release lever passes the guide way, the one end fixed connection of guide post the sucking disc, the other end of guide post stretches into the guiding hole to with slope spigot surface on the link of carriage release lever offsets, the sucking disc is close to when the end cover, the guide post stretches into the uide bushing and promotes the carriage release lever is close to the axis body.

Preferably, one end of the guide post, which is far away from the sucker, is connected with a roller through a pin shaft, and the roller is abutted to the inclined guide surface.

Preferably, a semi-cylindrical guide surface and a flange for supporting the moving rod are arranged on one side end surface of the end cover close to the sucker.

Preferably, the side surface of the moving rod and the corresponding position outside the guide sleeve are provided with connecting side lugs, and an extension spring is connected between the two connecting side lugs.

The invention provides a moving shaft brake which comprises an end cover and a sucker, wherein the end cover and the sucker are parallel to each other and are provided with intervals, the end cover is fixedly arranged, a shaft body sequentially and vertically penetrates through a through hole in the middle of the end cover and a through hole in the middle of the sucker and can freely move in the through hole, a moving rod parallel to the end cover is arranged in each interval, the moving shaft brake further comprises a driving device and a transmission device, the driving device is used for driving the end cover and the sucker to mutually approach, and the driving end of the moving rod approaches to and clings to the shaft body through the transmission device so. When needing the braking, drive arrangement drive end cover and sucking disc are close to each other to the drive carriage release lever pastes tight axis body, because the end cover is fixed to be set up, and end cover and sucking disc are close to each other and can press from both sides tight carriage release lever, make the carriage release lever can't carry out axial displacement, and then the axial displacement of restriction axis body avoids the axis body unnecessary displacement to appear, prevents the axis body collision, guarantees the steady operation of equipment, improve equipment security and reliability.

Drawings

FIG. 1 is an isometric view of one embodiment of a moving axle brake provided by the present invention;

FIG. 2 is a cross-sectional view of one embodiment of a moving axle brake provided by the present invention;

FIG. 3 is a schematic structural diagram of a base in one embodiment of the moving axis brake provided in the present invention;

FIG. 4 is a schematic structural diagram of an end cap of an embodiment of the moving shaft brake provided in the present invention;

fig. 5 is a schematic structural diagram of a moving rod in an embodiment of the moving axis brake provided in the present invention.

The device comprises a shaft body 1, a shaft body 2, a nut 3, a sucker 4, a return spring 5, a guide rod 6, an end cover 7, a base 8, a guide post 9, a roller 10, a pin shaft 11, an extension spring 12, a moving rod 13, a flange 14, an inductance coil 15, a guide sleeve 16, a friction pad 17, a connecting lug plate 18, a semi-cylindrical guide surface 19, a connecting side lug 20, a guide hole 21, a guide groove 22, a thrust platform 23 and an inclined guide surface.

Detailed Description

The core of the invention is to provide a moving shaft brake, wherein a sucker and an end cover are driven to approach each other, a moving rod is made to cling to a shaft body to limit the movement of the shaft body, and the moving rod cannot move axially through the fixedly arranged end cover to further limit the axial movement of the shaft body.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 5, fig. 1 is a side view of an embodiment of a movable shaft brake according to the present invention; FIG. 2 is a cross-sectional view of one embodiment of a moving axle brake provided by the present invention; FIG. 3 is a schematic structural diagram of a base in one embodiment of the moving axis brake provided in the present invention; FIG. 4 is a schematic structural diagram of an end cap of an embodiment of the moving shaft brake provided in the present invention; fig. 5 is a schematic structural diagram of a moving rod in an embodiment of the moving axis brake provided in the present invention.

The specific embodiment of the invention provides a movable shaft brake, which comprises an end cover 6 and a sucker 3, wherein the end cover 6 and the sucker 3 are parallel to each other and have intervals, the end cover 6 is fixedly arranged, a shaft body 1 sequentially and vertically penetrates through a through hole in the middle of the end cover 6 and a through hole in the middle of the sucker 3 and can freely move in the through holes, namely the end cover 6 and the sucker 3 penetrate through the shaft body 1, and the three can move relatively in pairs. The interval is internally provided with a movable rod 12 parallel to the end cover 6, and the device further comprises a driving device and a transmission device, wherein the driving device is used for driving the end cover 6 and the sucker 3 to be close to each other, and the transmission device is used for enabling the braking end of the movable rod 12 to be close to and tightly attached to the shaft body 1 so as to limit the movement of the shaft body 1.

When needing the braking, drive arrangement drive end cover 6 and sucking disc 3 are close to each other, and drive carriage release lever 12 pastes tight axis body 1, provide sufficient frictional force and restrict the removal of axis body 1, because end cover 6 is fixed to be set up, and end cover 6 and sucking disc 3 are close to each other and can press from both sides tight carriage release lever 12, make carriage release lever 12 can't carry out axial displacement, and then restrict the axial displacement of axis body 1, avoid unnecessary displacement to appear in axis body 1, prevent the collision of axis body 1, guarantee the steady operation of equipment, improve equipment security and reliability.

Specifically, install hollow base 7 on the end surface of one side that end cover 6 kept away from sucking disc 3, base 7 middle part is provided with and is used for the through-hole that axis body 1 passed perpendicularly, and drive arrangement is drawn forth by the wire hole of base 7 and is connected with the power including setting up inductance coil 14 in base 7, inductance coil 14. The suction cup 3 is specifically a magnetic disk, and the induction coil 14 can attract the suction cup 3 to move towards the end cover 6 after being electrified. Other types of driving devices, such as a driving motor, which is realized by various transmission modes such as a gear and a rack, can be adopted, and are within the protection scope of the invention. That is, the inductance coil 14 is fixedly installed in the cavity of the base 7 through the end cover 6, the lead of the inductance coil 14 is led out from the wire outlet hole of the base 7 to be connected with the power supply, and the base 7 is provided with a hole for guiding and supporting the shaft body 1.

In order to realize the reset of components after the cancellation of braking, a guide rod 5 parallel to the shaft body 1 is further arranged in the gap, one end of the guide rod 5 is fixedly connected with an end cover 6, the other end of the guide rod 5 penetrates through a through hole in the sucker 3 and is connected with a nut 2, a reset spring 4 is sleeved on the guide rod 5, and a thrust platform 22 is arranged on the guide rod 5 and provides a thrust surface for the reset spring 4. In the installation, end cover 6 is connected to the stiff end of guide bar 5, the expansion end can freely move in the through-hole after passing the through-hole, behind the installation nut 2, the one side that end cover 6 was kept away from to nut 2 and sucking disc 3 offsets, the one side that reset spring 4's one end and sucking disc 3 are close to end cover 6 offsets, reset spring 4's the other end offsets with thrust platform 22, when sucking disc 3 was close to end cover 6, end cover 6 extrusion reset spring 4, the through-hole is further stretched out to the expansion end of guide bar 5 simultaneously, nut 2 separates with sucking disc 3, in the reset process, reset spring 4 expandes, promote sucking disc 3 and keep away from end cover 6, offset with sucking disc 3 once more until nut 2, play spacing effect.

Specifically, the device comprises two symmetrically arranged guide rods 5 and two symmetrically arranged moving rods 12, wherein the connecting line of the two moving rods 12 is perpendicular to the connecting line of the two guide rods 5 and is arranged in a cross shape, and the number and arrangement mode of each part can be adjusted according to conditions, so that the device is within the protection scope of the invention.

In the moving shaft brake according to the embodiment of the present invention, in order to fix the end cap 6, a plurality of connecting lugs 17 may be disposed on the outer periphery of the base 7 for connecting other components to fix the base 7, and the base 7 and the end cap 6 are fixedly connected to each other, thereby fixing the end cap 6. Meanwhile, in order to improve the braking effect, the braking end of the travel bar 12 is provided with an arc plate matched with the shaft body 1 in shape, and a friction pad 16 is arranged on the arc plate. The glue may be applied to the arcuate plate of the travel bar 12 by a strong structural glue. The friction pad 16 may be made of semi-cylindrical industrial fur material with certain elasticity, rough contact surface and high friction coefficient, but other materials may be used.

On the basis of the moving axle brake provided by each of the above embodiments, the transmission device includes a guide sleeve 15 and a guide post 8, both of which are disposed in the space and have extending directions parallel to the axle body 1, one end of the guide sleeve 15 is fixedly connected to the end cover 6, the other end of the guide sleeve 15 is close to the suction cup 3 and is provided with a guide hole 20, a side plate of the guide sleeve 15 is provided with a guide slot 21 penetrating through the guide sleeve 15, the penetrating direction is parallel to the end cover 6, and a connecting end of the moving rod 12 passes through the guide slot 21, wherein one end of the moving rod 12 close to the axle body 1 is a braking end, one end of the moving rod 12 far from the axle body 1 is a moving end, one end of the guide post 8 is fixedly connected to the suction cup 3, the other end of the guide post 8 faces the end cover 6 and extends into the guide hole 20 and can freely move in the guide hole 20, and one end of the guide post 8 extending, when the sucker 3 is close to the end cover 6, the guide post 8 extends into the guide sleeve 15 and pushes the inclined guide surface 23, and due to the inclined structure, the motion in the vertical direction is converted into the motion in the horizontal direction, so that the movable rod 12 is close to the shaft body 1.

Furthermore, one end, far away from the sucker 3, of the guide post 8 is connected with a roller 9 through a pin shaft 10, and the roller 9 abuts against the inclined guide surface 23, so that the smoothness of the operation of the equipment is improved. The end surface of the end cover 6 close to the suction cup 3 is provided with a semi-cylindrical guide surface 18 and a flange 13 for supporting the moving rod 12, so as to provide guidance and support for the moving rod 12. In order to realize component resetting, the side surface of the moving rod 12 and the corresponding position outside the guide sleeve 15 are provided with connecting side lugs 19, and the extension spring 11 is connected between the two connecting side lugs 19. The moving ends of the two moving rods 12 pass through the guide grooves 21 of the two guide sleeves 15, respectively, and land on the semi-cylindrical guide surfaces 18 and the flanges 13, with one end of the cylindrical friction surface facing the shaft body 1. Each moving rod 12 is connected with the moving rod 12 and the same side connecting side lug 19 of the guide sleeve 15 through two extension springs 11 positioned at two sides. The structures of the guide rod 5, the flange 13 and the like on the end cover 6 are connected to the end cover 6 by welding, and other connection modes can be adopted.

When the movable brake is used for braking, the inductance coil 14 is electrified to generate an electromagnetic field, the electromagnetic field generates strong suction force on the suction cup 3, so that the suction cup 3 is close to the inductance coil 14 along the guide hole 20 of the guide sleeve 15 through the guide post 8, and the return spring 4 is extruded. At this time, the roller 9 of the guide post 8 presses the inclined guide surface 23 of the travel lever 12, thereby pushing the travel lever 12 to move toward the shaft body 1, the tension spring 11 is stretched, and the friction pad 16 of the travel lever 12 comes into contact with the shaft body 1 first, thereby gradually generating a pressing force. The friction pads 16 on the two moving rods 12 gradually increase the frictional resistance to the shaft body 1 until the shaft body 1 stops moving.

After braking is finished, the induction coil 14 is powered off to lose the electromagnetic field, and the adsorption effect on the sucker 3 is released. The sucking disc 3 is kept away from the inductance coil 14 under the restoring force effect of the return spring 4, the roller 9 on the guide post 8 is kept away from the inclined guide surface 23 on the movable rod 12, and the movable rod 12 is kept away from the shaft body 1 under the restoring force effect of the extension spring 11 until the sucking disc 3 and the movable rod 12 are reset. In this way, it is achieved that the movement brake can provide a repeated braking action to the shaft body 1.

The moving axis brake provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A moving shaft brake, characterized in that it comprises an end cover (6) and a suction cup (3) that are parallel to each other and have an interval, the end cover (6) is fixedly arranged, and the shaft body (1) vertically passes through the end cover (6) in turn. The through hole in the middle of the end cover (6) and the through hole in the middle of the suction cup (3) can move freely in the through hole, and the space is provided with a movement parallel to the end cover (6). The rod (12) further includes a driving device and a transmission device, the driving device is used to drive the end cover (6) and the suction cup (3) to approach each other, and make the moving rod (12) move closer through the transmission device. The braking end is close to and abuts against the shaft body (1) to limit the movement of the shaft body (1);

A hollow base (7) is installed on one end face of the end cover (6) away from the suction cup (3), and a passage for the shaft body (1) to vertically pass through is arranged in the middle of the base (7). A hole, the driving device includes an inductive coil (14) disposed in the base (7), the suction cup (3) is specifically a magnetic disk, and the inductive coil (14) can attract the suction cup (3) after being energized ) moves toward the end cap (6);

A guide rod (5) parallel to the shaft body (1) is arranged in the interval, one end of the guide rod (5) is fixedly connected to the end cover (6), and the other end of the guide rod (5) is fixedly connected to the end cover (6). One end passes through the through hole on the suction cup (3) and is connected with a nut (2), and a return spring (4) is sleeved on the guide rod (5);

The transmission device includes a guide sleeve (15) and a guide column (8) arranged in the interval and extending in parallel to the shaft body (1), and one end of the guide sleeve (15) is fixedly connected to the shaft body (1). An end cover (6), the other end of the guide sleeve (15) is provided with a guide hole (20), and the side plate of the guide sleeve (15) is provided with a guide groove (21) penetrating the guide sleeve (15) ), the connecting end of the moving rod (12) passes through the guide groove (21), one end of the guide column (8) is fixedly connected to the suction cup (3), and the other end of the guide column (8) extends into the guide hole (20) and abuts against the inclined guide surface (23) on the connecting end of the moving rod (12). When the suction cup (3) is close to the end cover (6), the The guide column (8) extends into the guide sleeve (15) and pushes the moving rod (12) to approach the shaft body (1).

2. The moving shaft brake according to claim 1, characterized in that it comprises two symmetrically arranged guide rods (5) and two symmetrically arranged said moving rods (12), two said moving rods The connecting line of (12) is perpendicular to the connecting line of the two guide rods (5).

3 . The moving shaft brake according to claim 1 , wherein a plurality of connecting lugs ( 17 ) are arranged on the outer periphery of the base ( 7 ). 4 .

4. The moving shaft brake according to claim 1, characterized in that, the braking end of the moving rod (12) is provided with an arc-shaped plate that matches the shape of the shaft body (1), and the arc-shaped plate is provided with There are friction pads (16).

5. The moving shaft brake according to claim 1, characterized in that, one end of the guide column (8) away from the suction cup (3) is connected with a roller (9) through a pin (10), and the roller ( 9) Abut against the inclined guide surface (23).

6 . The moving shaft brake according to claim 5 , wherein a half cylinder for supporting the moving rod ( 12 ) is provided on one end surface of the end cover ( 6 ) close to the suction cup ( 3 ). 7 . Guide surface (18) and flange (13).

7 . The moving shaft brake according to claim 6 , characterized in that, connecting lugs ( 19 ) are provided on the sides of the moving rod ( 12 ) and at the corresponding positions on the outside of the guide sleeve ( 15 ), and two of the connecting lugs ( 19 ) are provided. A tension spring (11) is connected between the side ears (19).