A method and device for disassembling a mobile counterweight

Abstract

The present invention discloses a method and device for disassembling a movable counterweight, comprising a crossbeam, a pulley bracket, a guide pulley, a C-shaped steel plate assembly, a pulley fixing plate, and a plurality of pulleys. The pulley bracket is mounted on the crossbeam, the guide pulley is mounted on the pulley bracket, and C-shaped steel plate assemblies are mounted on both sides of the crossbeam, with pulleys mounted on the C-shaped steel plate assemblies. A pulley fixing plate is mounted on the bottom of the crossbeam, and pulleys are mounted on the pulley fixing plate. The bottom of the pulley on the pulley fixing plate is connected to a hook pulley assembly via a steel wire rope. The disassembly device of the present invention can adjust the direction of the steel wire rope and connect the movable counterweight via the hook pulley assembly. At this time, the disassembly and installation of the movable counterweight is achieved by operating the counterweight lifting mechanism.

Description

Technical Field

[0001] The invention relates to a disassembly method and a disassembly device for a mobile counterweight, belonging to the technical field of tower cranes. Background Art

[0002] In order to meet the requirements of various working conditions, super-large tower cranes need to be equipped with movable counterweights. When the tower crane is moving or performing jacking operations, there is a safety risk due to the large weight on the upper part. The movable counterweight needs to be removed to the tower crane base frame. Since the balance arm is an inverted triangle structure, the counterweight lifting mechanism is located in the middle of the balance arm. If the counterweight is hoisted directly, it will interfere with the lower chord. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a disassembly method and disassembly device for a mobile counterweight, which solves the interference problem between the wire rope and the lower chord of the crane arm and ensures the normal disassembly of the mobile counterweight.

[0004] In order to achieve the above-mentioned object, the present invention adopts a disassembly device for a mobile counterweight, comprising a crossbeam, a pulley bracket, a guide pulley, a C-shaped steel plate assembly, a pulley fixing plate and a plurality of pulleys;

[0005] The pulley bracket is installed on the crossbeam, the guide pulley is installed on the pulley bracket, C-shaped steel plate components are installed on both sides of the crossbeam, and pulleys are installed on the C-shaped steel plate components;

[0006] A pulley fixing plate is installed at the bottom of the crossbeam, a pulley is installed on the pulley fixing plate, and the bottom of the pulley on the pulley fixing plate is connected to the hook pulley group through a steel wire rope.

[0007] As an improvement, the crossbeam is a box body formed by welding steel plates.

[0008] As an improvement, the pulley bracket, C-shaped steel plate assembly and pulley fixing plate are all welded to the crossbeam.

[0009] As an improvement, three groups of C-shaped steel plate assemblies are welded on both sides of the crossbeam, and a group of pulleys is installed in each group of C-shaped steel plate assemblies.

[0010] As an improvement, four sets of pulley fixing plates are welded to the bottom of the crossbeam, and two sets of pulleys are installed in every two sets of pulley fixing plates.

[0011] As an improvement, the pulleys are separated by spacers.

[0012] As an improvement, a lug plate is installed on one side of the crossbeam, and the lug plate is connected to the anti-twist device through a pin shaft.

[0013] As an improvement, two ear plates are welded to one side of the crossbeam.

[0014] As an improvement, the guide pulley is installed on the pulley bracket using a pulley shaft, and the pulleys are respectively installed on the C-shaped steel plate assembly and the pulley fixing plate using pulley shafts.

[0015] In addition, the present invention also provides a method for disassembling a mobile counterweight, using the disassembly device, and the specific steps are as follows:

[0016] Connect the hook pulley block to the mobile counterweight;

[0017] Lift the counterweight and move the counterweight trolley to separate the counterweight from the trolley. At this time, control the lifting mechanism to descend.

[0018] When the counterweight drops to the designated position, the traction mechanism is used to pull the counterweight to a position close to the standard section;

[0019] Finally complete the counterweight disassembly work.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) The disassembly device of the present invention is used to change the running direction of the wire rope, so that the hook pulley block is directly connected to the counterweight, meeting the disassembly requirements of the counterweight.

[0022] 2) The disassembly device can realize the self-disassembly of the tower crane counterweight.

[0023] 3) When the tower crane is moving or lifting, the safety of the entire machine is ensured by removing the counterweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of the disassembly device of the present invention;

[0025] Figure 2 Schematic diagram of the structure of the hook pulley assembly in the present invention;

[0026] Figure 3 A schematic diagram of the rope winding of the disassembly device of the present invention;

[0027] Figure 4 This is a disassembly diagram of the present invention;

[0028] In the figure: 1. crossbeam, 2. pulley bracket, 3. guide pulley, 4. C-shaped steel plate assembly, 5. pulley, 6. pulley fixing plate, 7. pulley shaft I, 8. ear plate, 9. anti-twist device, 10. pin shaft, 11. hook pulley assembly, 12. pulley shaft II. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. However, it should be understood that the specific embodiments described herein are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] like Figure 1 、 Figure 2 and Figure 3 As shown, a disassembly device for a mobile counterweight includes a crossbeam 1, a pulley bracket 2, a guide pulley 3, a C-shaped steel plate assembly 4, a pulley fixing plate 6 and a plurality of pulleys 5;

[0032] The pulley bracket 2 is installed on the crossbeam 1, and the guide pulley 3 is installed on the pulley bracket 2. C-shaped steel plate components 4 are installed on both sides of the crossbeam 1, and pulleys 5 are installed on the C-shaped steel plate components 4;

[0033] A pulley fixing plate 6 is installed at the bottom of the crossbeam 1, and a pulley 5 is installed on the pulley fixing plate 6. The bottom of the pulley 5 on the pulley fixing plate 6 is connected to the hook pulley group 11 through a steel wire rope.

[0034] As an improvement of the embodiment, the crossbeam 1 is a box body formed by welding steel plates, and the pulley bracket 2, C-shaped steel plate assembly 4 and pulley fixing plate 6 are all welded to the crossbeam 1, so the structure is highly stable.

[0035] As an improvement of the embodiment, three groups of C-shaped steel plate assemblies 4 are welded on both sides of the crossbeam 1, and a group of pulleys 5 are installed in each group of C-shaped steel plate assemblies 4. Four groups of pulley fixing plates 6 are welded on the bottom of the crossbeam 1, and two groups of pulleys 5 are installed in every two groups of pulley fixing plates 6. The winding method of the wire rope is changed by each pulley 5, such as Figure 3 As shown, the movable counterweight is connected via a hook pulley block 11.

[0036] As an improvement to the embodiment, the pulleys 5 are separated by spacers to ensure that the pulleys 5 can work normally.

[0037] As an improvement of the embodiment, two ear plates 8 are welded to one side of the crossbeam 1 , and the ear plates 8 are connected to the anti-twist device 9 via a pin 10 .

[0038] As an improvement of the embodiment, the guide pulley 3 is installed on the pulley bracket 2 using the pulley shaft II12, and the pulley 5 is installed on the C-shaped steel plate assembly 4 using the pulley shaft II12 and on the pulley fixing plate 6 through the pulley shaft I7.

[0039] In addition, combined Figure 4 (a) to Figure 4 As shown in (c), the present invention also provides a method for disassembling a mobile counterweight, using the disassembly device, and the specific steps are as follows:

[0040] Connect the hook pulley block 11 to the mobile counterweight;

[0041] Lift the counterweight, move the counterweight trolley to the tail of the balance arm, and make the counterweight separate from the trolley. At this time, control the lifting mechanism to descend.

[0042] When the counterweight drops to the designated position, the traction mechanism is used to pull the counterweight to a position close to the standard section;

[0043] Finally complete the counterweight disassembly work.

[0044] The disassembly device of the present invention can adjust the direction of the wire rope and connect the movable counterweight via a hook pulley assembly. The movable counterweight can then be removed and installed by operating the counterweight lifting mechanism. Furthermore, to ensure that the movable counterweight can be removed and placed in a fixed position, a traction mechanism can be installed at the standard section. This traction mechanism pulls the counterweight close to the standard section, allowing it to be placed in a fixed position.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A disassembly device for a mobile counterweight, characterized in that: Used to solve the problem of interference between a wire rope and a lower chord of a crane arm, comprising a crossbeam (1), a pulley bracket (2), a guide pulley (3), a C-shaped steel plate assembly (4), a pulley fixing plate (6) and a plurality of pulleys (5); The pulley bracket (2) is mounted on the crossbeam (1), a guide pulley (3) is mounted on the pulley bracket (2), C-shaped steel plate assemblies (4) are mounted on both sides of the crossbeam (1), and pulleys (5) are mounted on the C-shaped steel plate assemblies (4); A pulley fixing plate (6) is installed at the bottom of the crossbeam (1), a pulley (5) is installed on the pulley fixing plate (6), and the bottom of the pulley (5) on the pulley fixing plate (6) is connected to the hook pulley block (11) via a steel wire rope; The pulley bracket (2), C-shaped steel plate assembly (4) and pulley fixing plate (6) are all welded to the crossbeam (1); three groups of C-shaped steel plate assemblies (4) are welded on both sides of the crossbeam (1); a group of pulleys (5) are installed in each group of C-shaped steel plate assemblies (4); four groups of pulley fixing plates (6) are welded on the bottom of the crossbeam (1); two groups of pulleys (5) are installed in every two groups of pulley fixing plates (6); the guide pulley (3) is installed on the pulley bracket (2) using a pulley shaft; the pulleys (5) are respectively installed on the C-shaped steel plate assembly (4) and the pulley fixing plate (6) using pulley shafts; The disassembly method of the mobile counterweight adopts the disassembly device, and the specific steps are as follows: Connect the hook pulley assembly (11) to the mobile counterweight; Lift the counterweight and move the counterweight trolley to separate the counterweight from the trolley. At this time, control the lifting mechanism to descend. When the counterweight drops to the designated position, the traction mechanism is used to pull the counterweight to a position close to the standard section; Finally complete the counterweight disassembly work.

2. A disassembly device for a mobile counterweight according to claim 1, characterized in that: The crossbeam (1) is a box body formed by welding steel plates.

3. The disassembly device for a mobile counterweight according to claim 1, characterized in that: Each pulley (5) is separated by a spacer sleeve.

4. The disassembly device for a mobile counterweight according to claim 1, characterized in that: A lug plate (8) is installed on one side of the crossbeam (1), and the lug plate (8) is connected to the anti-twist device (9) via a pin shaft (10).

5. The disassembly device for a mobile counterweight according to claim 4, characterized in that: Two ear plates (8) are welded to one side of the crossbeam (1).

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