Assembly type counterweight self-unloading device of tower crane

Abstract

The utility model provides a tower crane assembly type counterweight self-unloading device which is characterized in that the self-unloading device is detachably arranged on a balance arm and comprises a main cross beam, a stand column, a pulley fixing device, a pulley block and an inclined supporting rod; the two stand columns are vertically arranged at the two ends of the main cross beam through bolts. The pulley fixing device is arranged in the center of the main cross beam; the pulley block is fixedly arranged in the pulley fixing device through a pin shaft; the inclined supporting rod is arranged on the stand column through a pin shaft and can be adjusted in the direction of the connecting pin shaft. Wherein the inclined supporting rod and the stand column are connected with the balance arm through the pin shaft, the counterweight mounting plate is lifted through the pulley block and disassembled, then the inclined supporting rod and the stand column are disassembled and moved to other positions of the balance arm and connected until all disassembly is completed, and the problems that in the prior art, a counterweight is inconvenient to disassemble and maintain in the later period, and the manufacturing cost is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tower crane equipment, in particular to an assembled counterweight self-unloading device for a tower crane. Background Art

[0002] Medium and large tower cranes are generally suitable for vertical and horizontal transportation of materials and installation of building components in the construction of bridges, power plants, etc. In actual construction applications, the attachment height generally reaches hundreds of meters. When increasing or decreasing the boom sections at high altitude, it is necessary to increase or decrease the counterweight. The counterweight self-unloading device can realize different combinations of counterweights in the air to meet the high-altitude self-unloading needs. The existing counterweights are mostly welded integral self-unloading device structures with a large overall weight, which is inconvenient to disassemble and maintain later. Some counterweight self-unloading devices and counterarms are integral structures, which are more suitable for single tower cranes. Recyclability and versatility are not considered, resulting in high production costs. Utility Model Content

[0003] The main purpose of the utility model is to provide a tower crane assembled counterweight self-unloading device, so as to at least solve the problems of the counterweight in the prior art that it is inconvenient to disassemble and maintain in the later stage and the high manufacturing cost.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a tower crane assembled counterweight self-unloading device, characterized in that the self-unloading device can be detachably arranged on the balance arm, including: a main crossbeam, a column, a pulley fixing device, a pulley block, and a diagonal brace rod; there are two columns, and the two columns are vertically arranged at both ends of the main crossbeam by bolts; the pulley fixing device is arranged at the center position of the main crossbeam; the pulley block is fixed in the pulley fixing device by a pin shaft; the diagonal brace rod is arranged on the column by a pin shaft and the diagonal brace rod can be adjusted along the direction of the connecting pin shaft; wherein the diagonal brace rod and the column are connected to the balance arm by a pin shaft, the counterweight mounting plate is lifted and disassembled by the pulley block, and then the diagonal brace rod and the column are disassembled and moved to other positions of the balance arm and connected until all disassembly is completed.

[0005] Furthermore, the adjustment angle of the diagonal brace is 15°-75°.

[0006] Furthermore, the self-unloading device also includes: a short support rod, one end of which is fixedly arranged on the bottom end of the main beam through a pin shaft, and the other end of which is fixedly arranged on the side wall of the column through a pin shaft.

[0007] Furthermore, a rope blocking rod is provided on the pulley fixing device.

[0008] Furthermore, a plurality of groups of first ear plates are evenly arranged on the balance arm.

[0009] Furthermore, a second ear plate is provided at the bottom end of the column.

[0010] Furthermore, a third ear plate is provided at the bottom end of the diagonal brace.

[0011] The utility model discloses a tower crane assembled counterweight self-unloading device, which is characterized in that the self-unloading device can be detachably arranged on the counterweight arm, and comprises: a main crossbeam, a column, a pulley fixing device, a pulley block, and a diagonal brace rod; there are two columns, and the two columns are vertically arranged at two ends of the main crossbeam by bolts; the pulley fixing device is arranged at the center position of the main crossbeam; the pulley block is fixed in the pulley fixing device by a pin shaft; the diagonal brace rod is arranged on the column by a pin shaft and the diagonal brace rod can be adjusted along the direction of the connecting pin shaft; wherein, the diagonal brace rod and the column are connected to the counterweight arm by a pin shaft, the counterweight mounting plate is hoisted by the pulley block and disassembled, and then the diagonal brace rod and the column are disassembled and moved to other positions of the counterweight arm and connected until all disassembly is completed, which solves the problems of inconvenience in disassembly and maintenance of the counterweight in the later stage and high manufacturing cost in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of a tower crane assembled counterweight self-unloading device that can be selected according to an embodiment of the utility model;

[0014] Figure 2 It is a structural schematic diagram of a tower crane assembled counterweight self-unloading device that can be selected according to an embodiment of the utility model;

[0015] The above drawings include the following reference numerals:

[0016] 10. Balance arm; 20. Self-unloading device; 21. Main crossbeam; 22. Column; 23. Pulley fixing device; 24. Pulley block; 25. Diagonal support rod; 26. Short support rod; 30. Multiple sets of first ear plates. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] According to an embodiment of the utility model, a tower crane assembled counterweight self-unloading device is provided. Figure 1As shown, the self-unloading device 20 is detachably arranged on the balance arm 10, including: a main crossbeam 21, a column 22, a pulley fixing device 23, a pulley block 24, and an oblique support rod 25; the two columns 22 are vertically arranged at both ends of the main crossbeam 21 by bolts; the pulley fixing device 23 is arranged at the center position of the main crossbeam 21; the pulley block 24 is fixedly arranged in the pulley fixing device 23 by a pin; the oblique support rod 25 is arranged on the column 22 by a pin and the oblique support rod 25 can be adjusted along the direction of the connecting pin; wherein, the oblique support rod 25 and the column 22 are connected to the balance arm 10 by a pin, the counterweight mounting plate is lifted and disassembled by the pulley block 24, and then the oblique support rod 25 and the column 22 are disassembled and moved to other positions of the balance arm 10 and connected until all disassembly is completed, and the various components are connected by a pin, the pin has a high load-bearing capacity and is very convenient to install, and the oblique support rod 25 can increase the overall structural strength and stability, so that the self-unloading device is safer during operation.

[0019] Furthermore, if Figure 1 As shown, the adjustment angle of the diagonal brace 25 is 15°-75°, and the diagonal brace 25 can be adjusted to facilitate the disassembly of the diagonal brace 25 and the column 22.

[0020] Furthermore, if Figure 1 As shown, the self-unloading device 20 also includes: a short support rod 26, one end of the short support rod 26 is fixedly arranged at the bottom end of the main beam 21 through a pin shaft, and the other end is fixedly arranged at the side wall of the column 22 through a pin shaft. The short support rod 26 can provide stable support and increase the strength of the structure.

[0021] Furthermore, if Figure 2 As shown, a rope-blocking rod is provided on the pulley fixing device 23, and the rope-blocking rod can prevent the steel wire rope from rubbing against the main crossbeam 21, prevent the steel wire rope from being worn, and protect the main crossbeam from being damaged.

[0022] Furthermore, if Figure 1 As shown, a plurality of groups of first ear plates 30 are evenly arranged on the balancing arm 10, and the self-unloading device 20 is connected to the plurality of first ear plates 30. After each lower counterweight corresponding to the pulley block is disassembled, the self-unloading device 20 is moved to the ear plates at the positions of the remaining counterweights and connected until all the disassembly is completed. The ear plates play an important supporting and stabilizing role, and the connection method is tightly connected, which can enhance the stability of the structure.

[0023] Furthermore, if Figure 2 As shown, a second ear plate is provided at the bottom end of the column 22. The ear plate has important supporting and stabilizing functions. The connection method is tight and can enhance the stability of the structure. The ear plate connection method is simple to construct and easy to operate.

[0024] Furthermore, if Figure 2As shown, a third ear plate is provided at the bottom end of the diagonal brace 25. The ear plate has important supporting and stabilizing functions. The connection method is tight and can enhance the stability of the structure. The ear plate connection method is simple to construct and easy to operate.

[0025] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tower crane assembled counterweight self-unloading device, characterized in that: The self-unloading device (20) is detachably arranged on the balance arm (10), and comprises: Main beam (21); A column (22), wherein there are two columns (22), and the two columns (22) are vertically arranged at two ends of the main beam (21) by bolts; A pulley fixing device (23), wherein the pulley fixing device (23) is arranged at a central position of the main cross beam (21); A pulley block (24), wherein the pulley block (24) is fixedly arranged in the pulley fixing device (23) via a pin shaft; The diagonal brace rod (25) is arranged on the column (22) through a pin shaft and the diagonal brace rod (25) can be adjusted along the direction of the connecting pin shaft; wherein the diagonal brace rod (25) and the column (22) are connected to the balance arm (10) through a pin shaft, the counterweight mounting plate is lifted and disassembled through the pulley block (24), and then the diagonal brace rod (25) and the column (22) are disassembled and moved to other positions of the balance arm (10) and connected until all disassembly is completed.

2. The tower crane assembled counterweight self-unloading device according to claim 1, characterized in that: The adjustment angle of the diagonal brace (25) is 15°-75°.

3. The tower crane assembled counterweight self-unloading device according to claim 1, characterized in that: The self-unloading device (20) further comprises: a short support rod (26), one end of which is fixedly arranged at the bottom end of the main cross beam (21) via a pin, and the other end of which is fixedly arranged at the side wall of the column (22) via a pin.

4. The tower crane assembled counterweight self-unloading device according to claim 1, characterized in that: The pulley fixing device (23) is provided with a rope blocking rod.

5. The tower crane assembled counterweight self-unloading device according to claim 1, characterized in that: A plurality of groups of first ear plates (30) are evenly arranged on the balancing arm (10).

6. The tower crane assembled counterweight self-unloading device according to claim 1, characterized in that: A second ear plate is provided at the bottom end of the column (22).

7. The tower crane assembled counterweight self-unloading device according to claim 1, characterized in that: A third ear plate is arranged at the bottom end of the diagonal brace (25).

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