Cable support of tower crane

Abstract

The utility model relates to the technical field of cable supports, and discloses a tower crane cable support which comprises a cable drum, the cable drum comprises a drum body and a supporting frame, round baffles are vertically fixed to the two ends of the drum body, rolling bearings are installed in the middles of the two round baffles, and broken shafts are fixed to inner rings of the rolling bearings. The end of the broken shaft is fixedly installed on the supporting frame, the broken shaft is of a hollow structure, a channel for a cable to penetrate through is formed in the broken shaft, and a round opening is formed in the winding drum body. The cable storage device is used for storing redundant cables on the ground, and when a tower crane is lifted, the cables can be released through rotation of the winding drum body, so that the length requirement of the cables at the new height of the tower crane is met. The tower crane standard knot is provided with the cable fixing support, the cable fixing support adopts a double-insulator design, and the distance is adjusted by combining the jacking spring, so that the stress of the cable is uniformly distributed, the local stress concentration is reduced, and the damage risk caused by gravity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable support technology, and in particular to a cable support for a tower crane. Background Technology

[0002] Tower cranes play a crucial role in construction, and the reliability and safety of their cables directly impact construction efficiency and personnel safety. However, existing tower crane cable management systems suffer from the following problems:

[0003] 1. Cables exposed to the outdoor environment for a long time, subjected to sunlight and gravity, are prone to cracking, which affects their insulation performance and service life.

[0004] 2. The cables supplied with tower cranes at the factory are usually longer than the actual length used, resulting in excess cable on the ground. These excess cables are often suspended or stacked on standard sections or on the ground, which is not conducive to cable storage and maintenance, and also affects the aesthetics of the foundation.

[0005] 3. Existing cable fixing methods often fail to effectively distribute the weight of the cable, resulting in excessive local stress on the cable and accelerating cable aging.

[0006] To address the aforementioned problems, this utility model provides a tower crane cable support, which aims to improve the service life and safety of cables, and to improve the storage and management of cables. Utility Model Content

[0007] Therefore, the purpose of this utility model is to provide a tower crane cable support to solve the problems pointed out in the background art.

[0008] To achieve the aforementioned objectives of this utility model, the technical solution adopted is as follows:

[0009] A tower crane cable support includes a cable reel for winding cables. The cable reel comprises a reel body and a support frame. Circular baffles are vertically fixed at both ends of the reel body. Rolling bearings are installed in the middle of the two circular baffles. A broken shaft is fixed to the inner ring of each rolling bearing. The end of the broken shaft is fixedly mounted on the support frame. The broken shaft is a hollow structure with a channel for the cable to pass through. Through the cooperation of the rolling bearings and the broken shaft, the reel body rotates on the support frame. The broken shaft also prevents the generation of eddy currents. A circular opening is provided on the reel body. The cable enters the reel body through the circular opening and then extends from the inside of the broken shaft to connect to the distribution cabinet, ensuring that the fixed end of the cable in the distribution cabinet does not rotate with the rotation of the reel body.

[0010] As a further improvement of this utility model, it also includes a cable fixing bracket, which includes a connecting plate, a first insulator, and a second insulator. Two connecting plates are arranged in parallel. The connecting plates have a circular through hole and an adjustment elongated hole. The first insulator is installed on a first pin, and the two ends of the first pin are respectively installed in the circular through hole of the connecting plate. The second insulator is installed on a second pin, and the two ends of the second pin are respectively installed in the adjustment elongated hole of the connecting plate. A first mounting plate is fixed to one end of the two connecting plates. Two symmetrically arranged tightening bolts are movably installed on the first mounting plate. A tightening spring is sleeved on the tightening bolt. The head end of the tightening bolt abuts against the second pin, and the tail end passes through the first mounting plate and is threaded with an anti-loosening nut. The second mounting plate is fixed on one of the connecting plates.

[0011] As a further improvement of this utility model, the second mounting plate is arranged parallel to the first mounting plate. Both the first and second mounting plates are provided with mounting holes. The first and second mounting plates are fixed to the horizontal web of the standard section by U-bolts. The arrangement of the first and second pins allows for the disassembly of the first and second insulators, facilitating cable installation. The distance between the first and second insulators can be controlled by adjusting the stroke of the tightening spring, which can relieve the load of the cable's weight and ensure that the cable is not damaged when it moves up and down between the first and second insulators.

[0012] As a further improvement of this utility model, the support frame includes a support base plate, and support side plates are vertically fixed at both ends of the support base plate. The end of the broken shaft is fixedly mounted on the support side plates by a fixing seat.

[0013] As a further improvement of this utility model, the supporting base plate is a rectangular frame structure and the supporting side plate is a triangular frame structure.

[0014] As a further improvement of this utility model, the length of the broken shaft is 15cm.

[0015] The beneficial effects of this utility model are: This utility model is used to store excess cables on the ground, and when the tower crane is being raised, the cables can be released by rotating the drum body to meet the cable length requirements at the new height of the tower crane. The cable fixing bracket set on the standard section of the tower crane fixes the cable between the first insulator and the second insulator. The pressure of the tightening spring presses the second insulator tightly, reducing the tensile force on the cable caused by gravity and reducing fatigue cracks in the cable insulation sleeve. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged view of the structure of section A in the middle;

[0019] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0020] Figure 4 This is a schematic diagram of the cable reel structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the cable fixing bracket of this utility model. Figure 1 ;

[0022] Figure 6 This is a schematic diagram of the cable fixing bracket of this utility model. Figure 2 .

[0023] In the diagram: 1. Cable reel; 11. Reel body; 111. Circular opening; 12. Support frame; 121. Support base plate; 122. Support side plate; 13. Circular baffle; 14. Rolling bearing; 15. Broken shaft; 16. Fixing seat; 2. Cable fixing bracket; 21. Connecting plate; 211. Circular through hole; 212. Adjusting elongated hole; 22. First insulator; 23. Second insulator; 24. First pin; 25. Second pin; 26. First mounting plate; 27. Tightening bolt; 271. Anti-loosening nut; 28. Tightening spring; 29. ​​Second mounting plate; 291. Mounting hole; 3. Cable. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] Example 1

[0027] like Figure 1-2 As shown, the tower crane cable support includes a cable reel 1 for winding cable 3. The cable reel 1 includes a reel body 11 and a support frame 12. Circular baffles 13 are vertically fixed at both ends of the reel body 11. Rolling bearings 14 are installed in the middle of both circular baffles 13. A broken shaft 15 is fixed to the inner ring of the rolling bearing 14. The end of the broken shaft 15 is fixedly installed on the support frame 12. The broken shaft 15 is a hollow structure with a channel for the cable 3 to pass through. Through the cooperation of the rolling bearings 14 and the broken shaft 15, the reel body 11 can rotate on the support frame 12. At the same time, the broken shaft 15 can also avoid the generation of eddy currents. A circular opening 111 is provided on the reel body 11. The cable 3 enters the reel body 11 through the circular opening 111 and then extends out from the inside of the broken shaft 15 to connect to the distribution cabinet, ensuring that the fixed end of the cable 3 in the distribution cabinet does not rotate with the rotation of the reel body 11.

[0028] Example 2

[0029] Based on the structure of Embodiment 1, in Embodiment 2, as follows: Figure 3-6 As shown, it also includes a cable fixing bracket 2, which includes a connecting plate 21, a first insulator 22, and a second insulator 23. Two connecting plates 21 are arranged in parallel. The connecting plates 21 have a circular through hole 211 and an adjusting elongated hole 212. The first insulator 22 is installed on a first pin 24, and the two ends of the first pin 24 are respectively installed in the circular through hole 211 of the connecting plate 21. The second insulator 23 is installed on a second pin 25, and the two ends of the second pin 25 are respectively installed in the adjusting elongated hole 212 of the connecting plate 21. A first mounting plate 26 is fixed to one end of the two connecting plates 21. Two symmetrically arranged tightening bolts 27 are movably installed on the first mounting plate 26. A tightening spring 28 is sleeved on the tightening bolt 27. The head end of the tightening bolt 27 abuts against the second pin 25, and the tail end passes through the first mounting plate 26 and is threaded with an anti-loosening nut 271. A second mounting plate 29 is fixed on one of the connecting plates 21.

[0030] The second mounting plate 29 is arranged parallel to the first mounting plate 26. Both the first mounting plate 26 and the second mounting plate 29 are provided with mounting holes 291. The first mounting plate 26 and the second mounting plate 29 are fixed to the horizontal web of the standard section by U-bolts. The first pin 24 and the second pin 25 can be used to disassemble the first insulator 22 and the second insulator 23, which is convenient for the installation of the cable 3. The distance between the first insulator 22 and the second insulator 23 can be controlled by adjusting the stroke of the tension spring 28, which can realize the unloading effect of the weight of the cable 3, and at the same time ensure that the cable 3 is not damaged when it moves up and down between the first insulator 22 and the second insulator 23.

[0031] The support frame 12 includes a support base plate 121, and support side plates 122 are vertically fixed at both ends of the support base plate 121. The end of the broken shaft 15 is fixedly installed on the support side plate 122 through a fixing seat 16.

[0032] The supporting base plate 121 is a rectangular frame structure, and the supporting side plate 122 is a triangular frame structure.

[0033] The length of the broken shaft 15 is 15cm.

[0034] Both the second mounting plate 29 and the first mounting plate 26 are made of angle steel.

[0035] This invention utilizes a cable reel structure 1 to orderly wind and store excess cable 3, preventing the cable 3 from being exposed to sunlight and gravity for extended periods, effectively preventing cracking and insulation aging, and extending its service life. The cable fixing bracket 2 employs a double insulator design, combined with a tensioning spring 28 to adjust the spacing, achieving uniform stress distribution on the cable 3, reducing localized stress concentration, and lowering the risk of damage due to gravity. The adjustable elongated hole 212, detachable pin, and spring tensioning structure allow for dynamic adjustment of the clamping spacing according to the cable 3 diameter and gravity, simplifying the installation process and facilitating later maintenance and replacement. The broken shaft 15 interrupts the closed magnetic circuit, preventing eddy current effects caused by changes in cable 3 current, and improving electrical safety.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, component disassembly or combination, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tower crane cable support, characterized in that: The cable reel includes a reel body and a support frame. Circular baffles are vertically fixed at both ends of the reel body. Rolling bearings are installed in the middle of the two circular baffles. A broken shaft is fixed to the inner ring of the rolling bearing. The end of the broken shaft is fixedly installed on the support frame. The broken shaft is a hollow structure with a channel for the cable to pass through inside. A circular opening is provided on the reel body.

2. The tower crane cable bracket according to claim 1, characterized in that: It also includes a cable fixing bracket, which includes a connecting plate, a first insulator, and a second insulator. Two connecting plates are arranged in parallel. The connecting plates have a circular through hole and an adjustment elongated hole. The first insulator is installed on a first pin, and the two ends of the first pin are respectively installed in the circular through hole of the connecting plate. The second insulator is installed on a second pin, and the two ends of the second pin are respectively installed in the adjustment elongated hole of the connecting plate. A first mounting plate is fixed to one end of the two connecting plates. Two symmetrically arranged tightening bolts are movably installed on the first mounting plate. A tightening spring is sleeved on the tightening bolt. The head end of the tightening bolt abuts against the second pin, and the tail end passes through the first mounting plate and is threaded with an anti-loosening nut. The second mounting plate is fixed on one of the connecting plates.

3. The tower crane cable bracket according to claim 2, characterized in that: The second mounting plate is arranged parallel to the first mounting plate, and both the first and second mounting plates are provided with mounting holes.

4. The tower crane cable bracket according to claim 1, characterized in that: The support frame includes a support base plate, and support side plates are vertically fixed at both ends of the support base plate. The end of the broken shaft is fixedly mounted on the support side plates by a fixing seat.

5. The tower crane cable bracket according to claim 4, characterized in that: The supporting base plate is a rectangular frame structure, and the supporting side plate is a triangular frame structure.

6. The tower crane cable bracket according to claim 1, characterized in that: The length of the broken shaft is 15cm.

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