CN220886807U - Climbing mechanism of tower crane - Google Patents

Abstract

The utility model relates to the technical field of cranes, and discloses a climbing mechanism of a tower crane, which comprises a ladder assembly, wherein a plurality of arc-shaped cage protection plates which are uniformly distributed are connected to the ladder assembly in a clamping manner; the cat ladder assembly comprises two vertical square cylinders which are distributed in parallel. According to the utility model, the fixed pull ring is pulled downwards, the fixed pull ring drives the circular end plate to vertically move downwards, when the circular end plate vertically moves downwards, the two connecting ropes pull the two horizontal moving plates to be close to each other, the two vertical moving plates are close to each other, the reset spring is contracted and shortened, and the limiting block is arranged on the vertical moving plates, so that the limiting block is driven to move by the movement of the vertical moving plates, and is separated from the inside of the square limiting hole, and the limiting block is not used for limiting the arc-shaped cage protection plate, so that the arc-shaped cage protection plate can be simply and conveniently detached from the ladder assembly, and the arc-shaped cage protection plate can be conveniently replaced or maintained.

Description

Climbing mechanism of tower crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a climbing mechanism of a tower 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.

At present, most of the protection cages on the climbing mechanisms of the existing tower cranes in the market are directly welded, and once the protection cage plates are broken or need to be replaced, the protection cage plates are difficult to detach, so that the replacement is troublesome.

Disclosure of utility model

In order to overcome the defects in the prior art, the utility model provides a climbing mechanism of a tower crane, which has the advantage of being convenient for replacing a cage plate.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a climbing mechanism of a tower crane comprises a ladder assembly, wherein a plurality of arc-shaped cage protection plates which are uniformly distributed are connected to the ladder assembly in a clamping manner;

The ladder stand assembly comprises two parallel vertical return cylinders, a plurality of equidistant horizontal pedals are fixedly arranged between the two vertical return cylinders, a plurality of vertical square through holes are formed in the vertical return cylinders, a vertical moving plate is arranged in the vertical return cylinders, a plurality of reset springs are fixedly arranged on one side face of each vertical moving plate, one end of each reset spring, which is far away from each vertical moving plate, is fixedly connected to the inner wall of each vertical return cylinder, a plurality of equidistant limiting blocks are fixedly arranged on one side face, which is far away from each reset spring, of each vertical moving plate, a horizontal through hole is formed in the inner portion of each horizontal pedal, a vertical hole is formed in the middle of the lower surface of each horizontal pedal, each vertical hole is communicated with each horizontal through hole, two symmetrically arranged horizontal moving plates are connected in an inner sliding mode, one end of each horizontal moving plate penetrates through one side face of each vertical return cylinder and extends to the inner portion of each vertical return cylinder, one end face of each horizontal moving plate, one end of each horizontal moving plate, which is located inside each vertical return cylinder, is fixedly connected to one end face of each horizontal moving plate, one connecting rope is fixedly connected to one end face inside each horizontal through hole, and one end face, which is far away from each vertical through hole.

As a preferable technical scheme of the utility model, one end of the connecting rope penetrating through the vertical hole is fixedly connected with a circular end plate.

As a preferable technical scheme of the utility model, the lower surface of the round end plate is fixedly provided with a fixed pull ring.

As a preferable technical scheme of the utility model, both ends of the arc-shaped cage protection plate are provided with square limiting holes matched with the limiting blocks.

As a preferable technical scheme of the utility model, the limiting block is inserted into the square limiting hole, and the limiting block is matched with the square limiting hole.

As a preferable technical scheme of the utility model, the cross section of the limiting block is a right triangle, and the inclined plane of the limiting block is smooth.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the fixed pull ring is pulled downwards, the fixed pull ring drives the circular end plate to vertically move downwards, when the circular end plate vertically moves downwards, the two connecting ropes pull the two horizontal moving plates to be close to each other, the two vertical moving plates are close to each other, the reset spring is contracted and shortened, and the limiting block is arranged on the vertical moving plates, so that the limiting block is driven to move by the movement of the vertical moving plates, and is separated from the inside of the square limiting hole, and the limiting block is not used for limiting the arc-shaped cage protection plate, so that the arc-shaped cage protection plate can be simply and conveniently detached from the ladder assembly, and the arc-shaped cage protection plate can be conveniently replaced or maintained.

Drawings

FIG. 1 is a schematic illustration of a climbing mechanism of a tower crane according to the present utility model;

FIG. 2 is a schematic view of the ladder assembly of the present utility model;

FIG. 3 is a longitudinal cross-sectional view of the ladder assembly of the utility model;

FIG. 4 is an enlarged view of portion A of FIG. 3 in accordance with the present utility model;

FIG. 5 is a transverse cross-sectional view of the ladder assembly of the utility model;

fig. 6 is a schematic structural view of the arc-shaped cage plate of the present utility model.

In the figure: 1. a ladder assembly; 101. a vertical loop-shaped cylinder; 102. a horizontal foot pedal; 103. square through holes; 104. a vertical moving plate; 105. a return spring; 106. a limiting block; 107. a horizontal through hole; 108. a vertical hole; 109. a horizontal moving plate; 110. a connecting rope; 111. a circular end plate; 112. fixing the pull ring; 2. arc cage protection plates; 201. square spacing hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 6, the utility model provides a climbing mechanism of a tower crane, which comprises a ladder assembly 1, wherein a plurality of arc-shaped cage plates 2 which are uniformly distributed are connected to the ladder assembly 1 in a clamping manner;

the ladder stand assembly 1 comprises two parallel vertical return cylinders 101, a plurality of equally-spaced horizontal pedals 102 are fixedly arranged between the two vertical return cylinders 101, a plurality of vertically-distributed square through holes 103 are formed in the vertical return cylinders 101, a vertical moving plate 104 is arranged in the vertical return cylinders 101, a plurality of return springs 105 are fixedly arranged on one side surface of the vertical moving plate 104, one end, far away from the vertical moving plate 104, of each return spring 105 is fixedly connected to the inner wall of the vertical return cylinders 101, a plurality of equally-spaced limiting blocks 106 are fixedly arranged on one side surface, far away from the return springs 105, of each vertical moving plate 104, a horizontal through hole 107 is formed in the interior of each horizontal pedal 102, a vertical hole 108 is formed in the middle of the lower surface of each horizontal pedal 102, each vertical hole 108 is communicated with each horizontal through hole 107, one end of the horizontal moving plates 109 penetrates through one side surface of the vertical return cylinders 101 and extends to the inner wall of the vertical return cylinders 101, one end plate 109 is fixedly connected with one end plate 110, which is fixedly connected with one end plate 110, far away from the inner side surface of each vertical return plate 101, and a circular end plate 109 is fixedly connected with one end plate 110;

By pulling the fixing pull ring 112 downwards, the fixing pull ring 112 drives the circular end plate 111 to move vertically downwards, when the circular end plate 111 moves vertically downwards, the two connecting ropes 110 pull the two horizontal moving plates 109 to be close to each other, the two vertical moving plates 104 are close to each other, the reset spring 105 is contracted and shortened, and the limiting block 106 is arranged on the vertical moving plates 104, so that the movement of the vertical moving plates 104 drives the limiting block 106 to move;

The two ends of the arc-shaped cage protection plate 2 are provided with square limiting holes 201 matched with the limiting blocks 106, the limiting blocks 106 are inserted into the square limiting holes 201, the limiting blocks 106 are matched with the square limiting holes 201, the cross sections of the limiting blocks 106 are right-angled triangles, and the inclined surfaces of the limiting blocks 106 are smooth;

Because the movement of the vertical moving plate 104 drives the limiting block 106 to move, the limiting block 106 is separated from the inside of the square limiting hole 201, the limiting block 106 is not used for limiting the arc-shaped cage protection plate 2, and therefore the arc-shaped cage protection plate 2 can be simply and conveniently detached from the cat ladder assembly 1, and the arc-shaped cage protection plate 2 is convenient to replace or maintain.

The working principle and the using flow of the utility model are as follows:

When the arc-shaped cage protection plate 2 needs to be detached from the cat ladder assembly 1, the arc-shaped cage protection plate 2 is replaced or maintained, firstly, a worker pulls the fixing pull ring 112 downwards, the fixing pull ring 112 drives the circular end plate 111 to move downwards vertically, when the circular end plate 111 moves downwards vertically, the two connecting ropes 110 pull the two horizontal moving plates 109 to be close to each other, the two vertical moving plates 104 are close to each other, the reset spring 105 is contracted and shortened, and the limiting block 106 is installed on the vertical moving plates 104, so that the movement of the vertical moving plates 104 drives the limiting block 106 to move, the limiting block 106 is separated from the square limiting hole 201 at the moment, and the limiting block 106 does not limit the arc-shaped cage protection plate 2 any more, so that the arc-shaped cage protection plate 2 can be detached from the cat ladder assembly 1 simply and conveniently, and the arc-shaped cage protection plate 2 is replaced or maintained conveniently.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a climbing mechanism of tower crane, includes cat ladder subassembly (1), its characterized in that: a plurality of arc-shaped cage protection plates (2) which are uniformly distributed are connected to the cat ladder assembly (1) in a clamping manner;

The ladder stand assembly (1) comprises two parallel vertical return cylinders (101), a plurality of equidistant horizontal pedals (102) are fixedly arranged between the two vertical return cylinders (101), a plurality of vertical square through holes (103) are formed in the vertical return cylinders (101), a vertical moving plate (104) is arranged in the vertical return cylinders (101), a plurality of return springs (105) are fixedly arranged on one side surface of the vertical moving plate (104), one end of each return spring (105) far away from the vertical moving plate (104) is fixedly connected to the inner wall of the corresponding vertical return cylinder (101), a plurality of equidistant limiting blocks (106) are fixedly arranged on one side surface of each vertical moving plate (104) far away from each return spring (105), a horizontal through hole (107) is formed in the horizontal pedal (102), a vertical through hole (108) is formed in the middle of the lower surface of each horizontal pedal (102), a plurality of return springs (105) are fixedly arranged on one side surface of each return spring (104), two horizontal sliding plates (109) are arranged in the horizontal through the horizontal return cylinders (101) in a sliding mode, one side surface of each return plate (109) extends to the inside the corresponding vertical return cylinder, the horizontal moving plate (109) is located at one end face inside the vertical rectangular cylinder (101) and fixedly connected with one side face of the vertical moving plate (104), a connecting rope (110) is fixedly connected to one end face, located inside the horizontal through hole (107), of the horizontal moving plate (109), and one end, far away from the horizontal moving plate (109), of the connecting rope (110) penetrates through the vertical hole (108).

2. The climbing mechanism of a tower crane according to claim 1, wherein: one end of the connecting rope (110) penetrating through the vertical hole (108) is fixedly connected with a circular end plate (111).

3. The climbing mechanism of a tower crane according to claim 2, wherein: the lower surface of the circular end plate (111) is fixedly provided with a fixed pull ring (112).

4. The climbing mechanism of a tower crane according to claim 1, wherein: both ends of the arc-shaped cage protection plate (2) are provided with square limiting holes (201) which are matched with the limiting blocks (106).

5. The climbing mechanism of a tower crane according to claim 4, wherein: the limiting block (106) is inserted into the square limiting hole (201), and the limiting block (106) is matched with the square limiting hole (201).

6. The climbing mechanism of a tower crane according to claim 4, wherein: the cross section of the limiting block (106) is a right triangle, and the inclined plane of the limiting block (106) is smooth.