CN221144288U - Folding cat ladder of hoist - Google Patents

Abstract

The utility model relates to the technical field of cranes, in particular to a folding crawling ladder of a crane; including the staircase frame that forms by the welding of I-steel, the top of staircase frame still is provided with pushing mechanism and folding mechanism, pushing mechanism one end is articulated with the staircase frame, and the other end is connected with folding mechanism rotation, folding mechanism includes fixed axle, folding ladder, connecting axle, connecting rod and sliding axle, and wherein both ends and staircase frame fixed connection after the fixed axle passes folding ladder top are connected with in the folding ladder that is close to staircase frame one side, and the other end and the middle part of staircase frame pass through the connecting axle and rotate to be connected, the sliding axle reciprocates along the staircase frame of vertical direction, the middle part of connecting rod is articulated with the middle part of folding ladder, and one end is articulated with the sliding axle on upper folding ladder right side, and the other end is articulated with the connecting axle on lower floor folding ladder left side. The utility model can automatically retract and expand, adjust the length of the ladder stand, and is convenient for operators to move up and down.

Description

Folding cat ladder of hoist

Technical Field

The utility model relates to the technical field of cranes, in particular to a folding crawling ladder for a crane.

Background

A crane refers to a multi-action lifting machine that vertically lifts and horizontally conveys weights within a certain range. Also known as crown block, aerial crane and crane. The device has large operation space and is mainly used for vertical and horizontal conveying of materials and installation of building components in house building construction. The device consists of a metal structure, a working mechanism and an electrical system. The metal structure comprises a tower body, a movable arm, a base and the like. The working mechanism comprises four parts of lifting, amplitude changing, rotation and walking. The electrical system comprises a motor, a controller, a power distribution cabinet, a connecting circuit, a signal, a lighting device and the like, a vertical ladder can be arranged on the inner side of the traditional crane for facilitating the up and down of operators, and the vertical ladder on the market at present is simple in structure and fixed and cannot be adjusted.

Disclosure of utility model

The purpose of the utility model is that: the folding cat ladder of the crane can be automatically folded and unfolded, the length of the cat ladder can be adjusted, and operators can conveniently move up and down.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a folding crawling ladder of a crane, comprising

The folding ladder comprises a ladder frame formed by welding I-steel, wherein the top of the ladder frame is also provided with a pushing mechanism and a folding mechanism, one end of the pushing mechanism is hinged to the ladder frame, the other end of the pushing mechanism is rotatably connected with the folding mechanism, the folding mechanism comprises a fixed shaft, a folding ladder, a connecting shaft, a connecting rod and a sliding shaft, the two ends of the fixed shaft penetrate through the top of the folding ladder and are fixedly connected with the ladder frame, the folding ladder close to one side of the ladder frame is rotatably connected with the sliding shaft, the other end and the middle of the ladder frame are rotatably connected through the connecting shaft, the sliding shaft moves up and down along the ladder frame in the vertical direction, the middle of the connecting rod is hinged to the middle of the folding ladder, one end of the connecting rod is hinged to the sliding shaft on the right side of the upper folding ladder, and the other end of the connecting rod is hinged to the connecting shaft on the left side of the lower folding ladder.

Further, the pushing mechanism comprises a connecting seat, a pushing piece and an adapter piece, wherein the adapter piece is hinged with one end of the connecting rod, the connecting seat is fixed on the inner side surface of the ladder frame, and two ends of the pushing piece are hinged with the connecting seat and the adapter piece.

Further, the pushing piece adopts a linear air cylinder, and is connected with the external driving to control the telescopic movement of the air cylinder so as to drive the pushing mechanism.

Further, the middle of the bottom of the folding ladder is also provided with a reinforcing rib, and the top of the folding ladder is provided with a flexible damping layer.

The beneficial effects of the utility model are as follows: 1) According to the utility model, the folding vertical ladder is arranged on the inner side of the crane, and the driving piece drives the pushing mechanism to control the folding mechanism to be unfolded and folded, so that the position can be conveniently adjusted when an operator climbs up and down the ladder, and the folding vertical ladder is simple in structure and convenient to use.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a bottom view of fig. 1.

Fig. 4 is a half cross-sectional view of fig. 2.

In the figure: 1. a ladder support; 2. a pushing mechanism; 3. a folding mechanism; 4. a fixed shaft; 5. folding ladder; 6. a connecting shaft; 7. a connecting rod; 8. a sliding shaft; 9. a connecting seat; 10. a pushing member; 11. an adapter; 12. reinforcing ribs; 13. a flexible damping layer.

Detailed Description

The utility model is further illustrated by the following description in conjunction with the accompanying drawings and specific embodiments.

Examples: as shown in the figure, the folding cat ladder of the crane comprises a ladder frame 1 formed by welding I-steel, wherein the top of the ladder frame 1 is further provided with a pushing mechanism 2 and a folding mechanism 3, one end of the pushing mechanism 2 is hinged with the ladder frame 1, the other end of the pushing mechanism is rotatably connected with the folding mechanism 3, the folding mechanism 3 comprises a fixed shaft 4, a folding ladder 5, a connecting shaft 6, a connecting rod 7 and a sliding shaft 8, wherein the fixed shaft 4 penetrates through the rear two ends of the top of the folding ladder 5 and is fixedly connected with the ladder frame 1, the sliding shaft 8 is rotatably connected with the folding ladder 5 close to one side of the ladder frame 1, the other end and the middle of the ladder frame 1 are rotatably connected through the connecting shaft 6, the sliding shaft 8 moves up and down along the ladder frame 1 in the vertical direction, the middle of the connecting rod 7 is hinged with the middle of the folding ladder 5, one end of the connecting rod is hinged with the sliding shaft 8 on the right side of the upper folding ladder 5, and the other end of the connecting rod is hinged with the connecting shaft 6 on the left side of the lower folding ladder 5.

The pushing mechanism 2 comprises a connecting seat 9, a pushing piece 10 and an adapter piece 11, wherein the adapter piece 11 is hinged with one end of the connecting rod 7, the connecting seat 9 is fixed on the inner side surface of the ladder frame 1, two ends of the pushing piece 10 are hinged with the connecting seat 9 and the adapter piece 11, and the pushing piece 10 is used for driving so as to push the folding mechanism 3 to move, so that a driving source of the folding mechanism 3 is provided.

The pushing piece 10 adopts a linear air cylinder, is connected with the external drive to control the telescopic motion of the air cylinder to drive the pushing mechanism 2, and can drive the extension and retraction of the linear air cylinder through a controller in the crane to control the extension and retraction of the pushing mechanism 2, so that the folding mechanism 3 is driven to be extended or retracted, thereby adjusting the position of the crawling ladder and facilitating the up and down of operators.

Still be provided with strengthening rib 12 in the middle of the bottom of folding ladder, the top is provided with flexible damping layer 13, improves the joint strength of every layer of folding ladder 5 through the strengthening rib 12 of bottom mid-mounting when using, and the stability of reinforced structure, the frictional force is increased to the rethread flexible damping layer 13, prevents to slide injury at the foot when moving on folding ladder 5, improves the security performance.

According to the utility model, the folding vertical ladder is arranged on the inner side of the crane, and the driving piece drives the pushing mechanism to control the folding mechanism to be unfolded and folded, so that the position can be conveniently adjusted when an operator climbs up and down the ladder, and the folding vertical ladder is simple in structure and convenient to use.

The foregoing is merely illustrative of the present utility model and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present utility model.

Claims (4)

1. A folding cat ladder of hoist, its characterized in that: including the staircase frame that forms by the welding of I-steel, the top of staircase frame still is provided with pushing mechanism and folding mechanism, pushing mechanism one end is articulated with the staircase frame, and the other end is connected with folding mechanism rotation, folding mechanism includes fixed axle, folding ladder, connecting axle, connecting rod and sliding axle, and wherein both ends and staircase frame fixed connection after the fixed axle passes folding ladder top are connected with in the folding ladder that is close to staircase frame one side, and the other end and the middle part of staircase frame pass through the connecting axle and rotate to be connected, the sliding axle reciprocates along the staircase frame of vertical direction, the middle part of connecting rod is articulated with the middle part of folding ladder, and one end is articulated with the sliding axle on upper folding ladder right side, and the other end is articulated with the connecting axle on lower floor folding ladder left side.

2. The folding crawling ladder of a crane according to claim 1, characterized in that: the pushing mechanism comprises a connecting seat, a pushing piece and an adapter piece, wherein the adapter piece is hinged with one end of a connecting rod, the connecting seat is fixed on the inner side surface of the ladder frame, and two ends of the pushing piece are hinged with the connecting seat and the adapter piece.

3. A folding crawling ladder of a crane according to claim 2, characterized in that: the pushing piece adopts a linear air cylinder, and is connected with the outside in a driving way to control the telescopic movement of the air cylinder so as to drive the pushing mechanism.

4. The folding crawling ladder of a crane according to claim 1, characterized in that: the middle of the bottom of the folding ladder is also provided with a reinforcing rib, and the top of the folding ladder is provided with a flexible damping layer.