CN202467627U - Small-sized safety climb ladder - Google Patents

Abstract

The utility model discloses a small-sized safety climbing ladder, which comprises a hollow ladder frame, the ladder legs are at the bottom end of the ladder frame, including a mandrel and an anti-skid cover, the ladder legs are slidingly connected with the mandrel, and wheels are connected at the lower end of the mandrel , an anti-slip cover is also connected to the ladder legs, the anti-slip cover is in the shape of a bowl buckled down, a spring is set on the mandrel, the upper end of the spring is against the anti-skid cover or the ladder leg, and the lower end is against the On the wheel; the bottom edge of the wheel is lower than the bottom edge of the anti-skid cover when the spring does not bear the weight of the person and is compressed, and the bottom edge of the wheel is parallel to the bottom edge of the anti-skid cover when the spring bears the weight of the person and is compressed. When the person does not go up the ladder, the spring will eject the mandrel and the universal wheel so that the lower edge is lower than the lower edge of the anti-skid cover, and if someone goes up the ladder, after the spring is compressed, the mandrel and the universal wheel will move up At this time, the nylon pad is in contact with the ground. Because the contact surface between the nylon pad and the ground is relatively large, it can effectively prevent the ladder legs from moving when someone is on the ladder, ensuring the safety of personnel.

Description

small safety climbing ladder

technical field

The utility model relates to a ladder, in particular to a climbing ladder.

Background technique

Common climbing ladders include ladder frames, pedals between the ladder frames, and ladder legs. There are two or four ladder legs. Wheels are connected to the bottom of the ladder legs, and the wheels can be universal wheels. As shown in Figure 1, but when such a ladder is in use, because the wheels will still roll, it is very unsafe, and it needs someone to assist to ensure that the ladder will not move, so as to ensure the safety of the people standing on the ladder.

Utility model content

The purpose of the utility model is to provide a small safe climbing ladder whose legs cannot move randomly.

The technical scheme of the utility model is:

A small safety climbing ladder includes a ladder frame with a hollow structure. The bottom end of the ladder frame is a ladder leg, including a mandrel and an anti-skid cover. The ladder leg is slidably connected to the mandrel. There is an anti-slip cover, the anti-slip cover is in the shape of a buckled bowl, the mandrel is covered with a spring, the upper end of the spring is against the anti-skid cover or the ladder leg, and the lower end is against the wheel; The lowermost edge of the wheel was lower than the lower edge of the anti-skid cover when the weight of the people was compressed, and the lowermost edge of the wheel was parallel to the lower edge of the anti-skid cover when the weight of the spring bearer was compressed.

The ladder legs are horizontally fixedly connected with a fixed pin, and the upper end of the mandrel is provided with a vertically transparent long hole, and the fixed pin is slidably connected with the long hole; the upper end of the anti-skid cover is connected with the ladder leg; the spring The upper end is pressed against the upper end surface of the anti-skid cover.

The ladder leg is provided with a keyway, and the outer circumference of the upper end of the mandrel is correspondingly provided with a raised sliding key, the keyway is slidably connected with the sliding key, and the upper and lower ends of the spring are respectively against the ladder leg and the universal wheel.

Described wheel is universal wheel.

The anti-slip cover includes an anti-slip cover body and a nylon pad, and the nylon pad is circumferentially sleeved on the lower end of the anti-slip cover body.

The section shape of the nylon pad is "L".

The utility model is fixedly connected with a fixed pin on the ladder leg, and the fixed pin is slidingly connected with the long hole at the upper end of the mandrel, and the lower end of the ladder leg is connected with an anti-slip cover, and the anti-slip cover becomes a buckled bowl shape. A spring is arranged between the mandrel and the anti-skid cover. When the person does not go up the ladder, the spring will eject the mandrel and the universal wheel so that the lower edge is lower than the lower edge of the anti-skid cover, and if someone goes up the ladder, after the spring is compressed, the mandrel and the universal wheel will move up At this time, the nylon pad is in contact with the ground. Because the contact surface between the nylon pad and the ground is relatively large, it can effectively prevent the ladder legs from moving when someone is on the ladder, ensuring the safety of personnel.

Description of drawings

Fig. 1 is the structural representation of existing climbing ladder;

Fig. 2 is the structural representation of the ladder leg of the utility model;

Fig. 3 is the structural representation of mandrel;

Fig. 4 is the structural representation of antiskid cover;

Fig. 5 is the use state figure of the utility model;

Fig. 6 is a schematic structural view of the mandrel of the present invention when a feather key is used.

Detailed ways

As shown in Figures 2 and 5, the utility model comprises a ladder frame 1 of a hollow structure, a fixed pin 3, a mandrel 4, and an anti-skid cover 5. The lowermost end of the ladder frame 1 is the ladder leg 2, the ladder leg 2 is horizontally fixedly connected with the fixed pin 3, the upper end of the mandrel 4 is provided with a vertically transparent long hole 6, and the fixed pin 3 is slidably connected with the long hole 6; the mandrel 4 lower ends are connected with universal wheel 7. The anti-slip cover 5 is in the shape of a buckled bowl, and the upper end of the anti-slip cover 5 is provided with a hole for the mandrel 4 to pass through and is connected with the ladder legs 2 .

The mandrel 4 is sleeved with a spring 8 , and the upper end of the spring 8 presses against the upper surface of the anti-skid cover 5 , and the lowermost edge of the universal wheel 7 is lower than the lower edge of the anti-skid cover 5 when the spring 8 is not compressed.

As in Fig. 3, 4 anti-slip cover 5 comprises anti-slip cover body 9 and nylon pad 10, anti-slip cover body 9 lower ends are provided with concave steps, and nylon pad 10 circumference is set on the step of anti-slip cover body 9 lower ends. The section shape of the nylon pad 10 is "L".

As shown in Figures 2 and 5, when the utility model is moved, the spring 8 pushes the universal wheel 7 downward and bears the gravity from the ladder frame 1 itself, and the lower edge of the nylon pad 10 is 5mm higher than the lower edge of the universal wheel 7 , people can move easily. After moving to the predetermined position, after people step on the pedal of the present utility model, because the weight increases greatly, the spring 8 is compressed. It moves upwards, and the lower edge of the universal wheel 7 is generally parallel to the lower edge of the nylon pad 10 . Because the bottom of the nylon pad 10 has a larger contact surface with the ground, it can effectively prevent the ladder legs 2 from moving.

Finally, it should be noted that the upper end of the anti-skid cover 5 can also be provided with a larger hole and then be connected with the ladder leg 2. At this time, the upper end of the spring 8 is pressed against the end face of the ladder leg 2; as shown in Figure 6, it can also be cancelled. Fixed pin 3, and several slide grooves are vertically arranged in the ladder leg 2, correspondingly provided with some protruding sliding keys 11 on the mandrel, and the upper and lower ends of the spring 8 lean against the ladder leg 2 and the universal wheel 7 respectively , the feather key 11 slides in the chute, and the top of the chute should ensure that the mandrel 4 can be fully retracted when the anti-skid cover 5 is on the ground. These approximate changes above all fall within the protection scope of the present utility model.

Claims (7)

1. A small safety climbing ladder, including a ladder frame with a hollow structure, and the bottom end of the ladder frame is a ladder leg, which is characterized in that it includes a mandrel and an anti-skid cover, the ladder legs are slidably connected to the mandrel, and the lower end of the mandrel is connected with wheels. An anti-skid cover is also connected to the ladder legs, and the anti-skid cover is in the shape of a buckled bowl. The mandrel is covered with a spring. The upper end of the spring is against the anti-skid cover or the ladder leg, and the lower end is against the wheel. On; the lowermost edge of the wheel is lower than the lower edge of the anti-skid cover when the spring is not under the weight of the person and is compressed. 2. The small safety climbing ladder according to claim 1, characterized in that: said ladder legs are horizontally fixedly connected with fixed pins, the upper end of said mandrel is provided with a vertically transparent long hole, said fixed pins are connected with The slotted hole is slidingly connected; the upper end of the anti-skid cover is connected with the ladder legs; the upper end of the spring is pressed against the upper end surface of the anti-skid cover. 3. The small safety climbing ladder according to claim 1, characterized in that: said ladder leg is provided with a keyway, and the outer circumference of the upper end of said mandrel is correspondingly provided with a raised sliding key, and the keyway is slidingly connected with the sliding key, The upper and lower ends of the spring lean against the ladder legs and the universal wheels respectively. 4. The small safety climbing ladder according to any one of claims 1-3, characterized in that: the wheels are universal wheels. 5. The small safety climbing ladder according to any one of claims 1-3, characterized in that: the anti-slip cover includes an anti-slip cover body and a nylon pad, and the nylon pad is circumferentially sleeved on the lower end of the anti-slip cover body. 6. The small safety climbing ladder according to claim 5, characterized in that: the cross-sectional shape of the nylon pad is "L". 7. The small safety climbing ladder according to any one of claims 1-3, characterized in that: when the spring bears the weight of the person and is compressed, the lowermost edge of the wheel is parallel to the lower edge of the anti-skid cover.

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