CN204508645U - A kind of tower crane self-unloading counter weight device - Google Patents

Abstract

The utility model relates to a self-unloading counterweight device for a tower crane, which comprises a support frame fixed on the arm frame of the tower crane. Several counterweight bodies are bolted to the arm frame of the tower crane. The support frame includes left, The right vertical frame and the cross beam erected between the left and right vertical frames. The top surface of the middle part of the cross beam is connected with a fixed pulley through the base. The hoist on the crane is connected. The self-unloading counterweight device of the tower crane can complete the hoisting operation of the counterweight by using the hoist of the tower crane itself, which is cheaper than using a large crane or roof crane, and shortens the time for dismantling the tower crane.

Description

Self-unloading counterweight device for a tower crane

technical field

The utility model relates to a self-unloading counterweight device for a tower crane.

Background technique

After the installation of the tower crane is completed, due to the lack of consideration in the early positioning and the change of the project drawings in the later stage, when the tower crane is disassembled, the lifting point of the counterweight is far away from the position of the crane, and a large-tonnage crane or roof crane is required to complete the disassembly operation .

Utility model content

The utility model makes improvements to the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the utility model is to provide a self-unloading device for the balance weight of a tower crane that is simple in structure and convenient.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: a self-unloading counterweight device for a tower crane, including a support frame fixed on the jib of the tower crane, and a number of Counterweight body, the support frame includes left and right vertical frames and a beam erected between the left and right vertical frames, the top surface of the middle part of the beam is connected with a fixed pulley through the base, one end of a steel wire rope is fixed on the beam, and the other end is passed through Set the overrunning pulley and the fixed pulley and connect them with the hoist on the tower crane.

Further, a ∩-shaped seat is sheathed on the movable pulley, and the movable pulley is connected to the ∩-shaped seat through the first pin shaft passing through the center in a transverse direction, and the bottom of the ∩-shaped seat is connected to the counterweight body through the second pin shaft connected.

Further, the support frame is erected above the counterweight body.

Further, diagonal braces are provided on both sides of the left and right stands and the base.

Further, the left and right stand are both in the shape of ∩.

Compared with the prior art, the utility model has the following beneficial effects: the self-unloading counterweight device of the tower crane can complete the counterweight hoisting operation by using the hoist of the tower crane itself, and the cost is lower than that of using a large crane or a roof crane, and shortens The time taken to disassemble the tower crane.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Description of drawings

Fig. 1 is a schematic front view of the structure of the embodiment of the utility model.

Fig. 2 is a schematic side view of the structure of the embodiment of the utility model.

In the figure: 1-support frame, 11-left stand, 12-right stand, 13-beam, 2-counterweight, 3-base, 4-fixed pulley, 5-wire rope, 6-moving pulley, 7-hoist, 8-∩ shape seat, 81-the first bearing pin, 82-the second bearing pin, 9-diagonal brace.

Detailed ways

As shown in Figures 1 to 2, a self-unloading counterweight device for a tower crane includes a support frame 1 fixed on the jib of the tower crane, and a plurality of counterweights 2 are bolted to the jib of the tower crane. Described support frame 1 comprises left vertical frame 11, right vertical frame 12 and crossbeam 13 erected between left vertical frame 11, right vertical frame 12, described crossbeam 13 middle part top surface is connected with fixed pulley 4 through base 3, a wire rope 5. One end is fixed on the crossbeam 13, and the other end passes through the moving pulley 6 and the fixed pulley 4 and is connected with the hoist 7 on the tower crane.

In the present utility model, a ∩-shaped seat 8 is sheathed on the movable pulley 6, and the movable pulley 6 is connected to the ∩-shaped seat 8 through a first pin shaft 81 passing through the middle in the transverse direction. The ∩-shaped seat 8 The bottom is connected with the counterweight body 2 via the second pin shaft 82 .

In the present invention, the support frame 1 is erected above the weight body 2 .

In the present utility model, diagonal braces 9 are arranged on both sides of the left stand 11 , the right stand 12 , and the base 3 .

In the present utility model, the left stand 11 and the right stand 12 are both in the shape of ∩.

The specific use process of the utility model is as follows: hoist each part of the support frame 1 to the jib of the tower crane, weld and assemble it on the top of the counterweight 2, wind one end of the steel wire rope 5 and fix it on the beam 13, and pass the other end in sequence The movable pulley 6 and the fixed pulley 4 are connected with the hoist 7 of the tower crane, and the counterweight 2 is connected to the bottom of the ∩-shaped seat 8, and the hoist 7 is slowly started until the counterweight 2 is lifted about 3 cm, and the counterweight 2 is fixed. The pin shaft and the pin shaft baffle plate slowly lower the counterweight body 2 to the ground.

The above descriptions are only preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the patent scope of the present utility model shall fall within the scope of the present utility model.

Claims (5)

1. A self-unloading counterweight device for a tower crane, characterized in that: comprise a support frame fixed on the jib of the tower crane, which is bolted with some counterweight bodies on the jib of the tower crane, and the support frame includes The left and right vertical frames and the cross beam erected between the left and right vertical frames, the top surface of the middle part of the cross beam is connected with a fixed pulley through the base, one end of a steel wire rope is fixed on the cross beam, and the other end is passed through the movable pulley, the fixed pulley and connected with the The hoist on the tower crane is connected. 2. A self-unloading counterweight device for a tower crane according to claim 1, characterized in that: a ∩-shaped seat is sheathed on the movable pulley, and the movable pulley passes through the first pin shaft in the middle through the horizontal direction It is connected with the ∩-shaped seat, and the bottom of the ∩-shaped seat is connected with the weight body through the second pin shaft. 3. A self-unloading counterweight device for a tower crane according to claim 1, wherein the support frame is erected above the counterweight body. 4. A self-unloading counterweight device for a tower crane according to claim 1, characterized in that: the left and right stand and both sides of the base are provided with diagonal braces. 5. A self-unloading counterweight device for a tower crane according to claim 1 or 4, characterized in that: said left and right stand are both in the shape of ∩.