A gate machine power supply cable fixing device

Abstract

A gantry crane power supply cable fixing device includes a fixing clamp for clamping and fixing to a structure inside the gantry crane; a cable clamping device fixedly connected to the fixing clamp, the cable clamping device including a first arc-shaped clamp and a second arc-shaped clamp; and a rubber ring detachably disposed within the cable clamping device, the rubber ring being used to surround the cable and restrict the cable's displacement relative to the rubber ring. This application enables efficient, quick, and non-destructive fixing of cables to the gantry crane.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable installation, and specifically relates to a fixing device for the power supply cable of a gantry crane. Background Technology

[0002] Mobile gantry cranes are commonly used in hydropower stations, docks, and large factories for hoisting equipment and materials. The power supply cables for these cranes are typically installed within the gantry legs and box girder, transmitting current to each operating mechanism to provide power. The space within the gantry legs and box girder is limited, and the cables are relatively long and thick. Furthermore, the power supply cables are large in diameter and heavy, making cable laying challenging and requiring highly skilled operators. The appropriateness of the fixing devices directly affects the cable's lifespan, the efficiency of cable laying, and the ease of cable replacement and maintenance.

[0003] Currently, there are two methods for fixing the power supply cable of the gantry crane inside the gantry legs and box girder: one is to fix the power cable by spot welding with U-shaped clips. This method is prone to damaging the rubber sheath of the cable during welding, affecting its service life. When maintaining and replacing it, cutting and welding are still required, resulting in low work efficiency and high safety risks. The second method is to fix it to the ladder inside the gantry legs or box girder by binding. The power supply cable is heavy, and this method cannot distribute the weight of the cable in the vertical direction through the fixing point. This will create stress concentration at the entrance of the gantry legs and box girder, affecting the service life of the cable. Utility Model Content

[0004] This utility model provides a fixing device for the power supply cable of a gantry crane, so as to solve the problem of difficulty in fixing the power supply cable of the gantry crane in the leg and box girder.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A gantry crane power supply cable fixing device, comprising:

[0007] The fixing clamp is used to hold and fix the device to the structure inside the gantry crane.

[0008] A cable clamping device, fixedly connected to the fixing clamp, includes a first arc-shaped clamp and a second arc-shaped clamp, wherein the cable is clamped in the first arc-shaped clamp and the second arc-shaped clamp;

[0009] A rubber ring, detachably disposed within the cable clamping device, is used to surround the cable and restrict cable displacement relative to the rubber ring.

[0010] Furthermore, the fixing fixture includes a U-shaped clamp, a clamping plate is movably disposed inside the U-shaped clamp, an adjusting bolt is fixed on the clamping plate, and the adjusting bolt passes through the side wall of the U-shaped clamp and is threadedly connected to the U-shaped clamp.

[0011] Furthermore, the inner wall of the opposite plate of the U-shaped clamp has an arc-shaped concave surface, the clamp plate as a whole is arc-shaped, and the curvature of the clamp plate matches the curvature of the arc-shaped concave surface of the U-shaped clamp.

[0012] Furthermore, the outer wall of the U-shaped clamp is fixed with a connecting shaft for connection with the cable clamping device.

[0013] Furthermore, both ends of the first arc-shaped clamp and the second arc-shaped clamp are provided with connecting lugs, and a threaded connector is provided between the two connecting lugs that are connected to each other.

[0014] Furthermore, the inner walls of the first arc-shaped clamp and the second arc-shaped clamp are provided with fixing grooves, which penetrate the side walls at both ends of the first arc-shaped clamp and the second arc-shaped clamp;

[0015] A positioning ring is provided on the outside of the rubber ring for insertion into the fixing groove.

[0016] Furthermore, the rubber ring includes a first arc-shaped pad and a second arc-shaped pad, and the arc-shaped outer sidewall of the rubber ring matches and fits the arc-shaped inner sidewall of the cable clamping device.

[0017] Furthermore, along the height direction of the first arc-shaped clamp and the second arc-shaped clamp, multiple fixing grooves are provided at intervals; the number and position of the positioning rings correspond to the number of fixing grooves.

[0018] Furthermore, a rubber sheet is adhered and fixed to the inner wall of the fixing groove, and at least the outer surface of the positioning ring is made of rubber.

[0019] Furthermore, depending on the cable diameter, rubber rings with different inner diameters are replaced, and the thickness of the rubber rings around the circumference varies in different regions with different inner diameters.

[0020] The present invention can achieve the following beneficial effects:

[0021] 1. This application discloses a gantry crane power supply cable fixing device for fixing and supporting the power cable inside the gantry crane legs and box girder. By setting a fixing clamp, the device can be quickly and reliably fixed to the ladder of the gantry crane, legs or box girder to form a fulcrum; the cable clamping device fixes and supports the cable; the rubber ring increases the friction between the cable and the device and protects the cable sheath from being pinched.

[0022] 2. The device of this application can quickly and firmly fix the power supply cable to the ladder inside the door leg and box beam. It can adapt to cables of various diameters. The device can provide sufficient support for the cable, with no risk of pinching or leakage. The device has high strength, is quick to install, has a simple structure, is easy to manufacture, and facilitates cable replacement and maintenance.

[0023] 3. The device of this application can replace rubber rings with different inner diameters to adapt to power supply cables of different diameters, and has good applicability. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the overall structure of a gantry crane power supply cable fixing device according to the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the fixing clamp of this utility model;

[0027] Figure 3 This is a schematic diagram of the cable clamping device of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the rubber ring of this utility model;

[0029] Figure 5 This is a partial schematic diagram showing the effect of the fixing device of this utility model after it has been installed on the gantry crane.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Fixing clamp; 11. U-shaped clamp; 12. Clamping plate; 13. Adjusting bolt; 14. Connecting shaft; 2. Cable clamping device; 21. First arc-shaped clamp; 211. Fixing groove; 22. Second arc-shaped clamp; 23. Connecting ear plate; 24. Threaded connector; 3. Rubber ring; 31. Positioning ring; 32. First arc-shaped pad; 33. Second arc-shaped pad;

[0032] 100. Ladder; 200. Cable; 300. Cable fixing device. Detailed Implementation

[0033] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0034] like Figures 1 to 5As shown, a gantry crane power supply cable fixing device includes a fixing clamp 1, a cable clamping device 2, and a rubber ring 3. The fixing clamp 1 and the cable clamping device 2 are fixedly connected, and the rubber ring 3 is disposed inside the cable clamping device 2. The fixing clamp 1 is used to quickly connect the device to the ladder 100 inside the gantry leg or box girder; the cable clamping device 2 is used to provide clamping force for fixing the cable 200; the rubber ring 3 is in direct contact with the cable 200 and surrounds the cable 200 to achieve non-destructive fixing of the cable 200.

[0035] The fixing fixture 1 includes a U-shaped clamp 11, within which a clamping plate 12 is movably disposed. An adjusting bolt 13 is rotatably connected to the clamping plate 12, passing through the side wall of the U-shaped clamp 11 and threadedly connected to it. Specifically, a hole can be made in the side wall of the U-shaped clamp 11, and a fixing nut can be welded to the outer wall of the U-shaped clamp 11, thereby facilitating the threaded connection between the adjusting bolt 13 and the U-shaped clamp 11.

[0036] The distance between the U-shaped clamp 11 and the clamping plate 12 is adjusted by rotating the adjusting bolt 13, thereby forming a clamping force and achieving connection with the ladder 100. A connecting shaft 14 is fixed to the outer wall of the U-shaped clamp 11. The connecting shaft 14 is welded to the cable clamping device 2 to form an integral whole. The cable fixing device of this application is installed on the ladder 100 by the fixing clamp 1.

[0037] Furthermore, the inner walls of the two opposing plates of the U-shaped clamp 11 form arc-shaped concave surfaces, which improve the connection stability between the fixing clamp 1 and the ladder 100 column. At the same time, the clamping plate 12 is arc-shaped as a whole, and the curvature of the clamping plate 12 matches the curvature of the arc-shaped concave surface of the U-shaped clamp 11. By rotating the adjusting bolt 13, the side wall of the clamping plate 12 can be made to fit against the inner wall of the U-shaped clamp 11.

[0038] The cable clamping device 2 includes a first arc-shaped clamp 21 and a second arc-shaped clamp 22. Both ends of the first arc-shaped clamp 21 and the second arc-shaped clamp 22 are formed with connecting ear plates 23. When the cable clamping device 2 is used to fix the cable 200, the first arc-shaped clamp 21 and the second arc-shaped clamp 22 are placed around the cable 200. At this time, the two connecting ear plates 23 of the first arc-shaped clamp 21 and the two connecting ear plates 23 of the second arc-shaped clamp 22 correspond to each other.

[0039] A threaded connector 24 is provided between the two connecting lugs 23 that connect the first arc-shaped clamp 21 and the second arc-shaped clamp 22. The threaded connector 24 enables the connection between the first arc-shaped clamp 21 and the second arc-shaped clamp 22, and also allows for adjustment of the distance between them. Specifically, the threaded connector 24 may include a stud and a nut; the distance between the first arc-shaped clamp 21 and the second arc-shaped clamp 22 is adjusted by tightening the nut.

[0040] The rubber ring 3 is integrally disposed between the first arc-shaped clamp 21 and the second arc-shaped clamp 22. The rubber ring 3 includes a first arc-shaped pad 32 and a second arc-shaped pad 33. Specifically, the inner walls of the first arc-shaped clamp 21 and the second arc-shaped clamp 22 are provided with fixing grooves 211, and positioning rings 31 are provided on the outer sides of the first arc-shaped pad 32 and the second arc-shaped pad 33. The positioning rings 31 are inserted into the fixing grooves 211 respectively, realizing the detachable connection between the rubber ring 3 and the cable clamping device 2. It should be noted that the arc-shaped outer wall of the rubber ring 3 matches and fits the arc-shaped inner wall of the cable clamping device 2 to ensure the installation stability of the rubber ring 3.

[0041] The cable 200 is placed between the first arc-shaped pad 32 and the second arc-shaped pad 33, and the cable 200 is clamped by adjusting the distance between the first arc-shaped clamp 21 and the second arc-shaped clamp 22. Since the cable 200 is in direct contact with the rubber ring 3 and the contact area is large, the damage to the cable 200 structure during fixing can be reduced, and non-destructive fixing can be achieved.

[0042] For cables 200 of different diameters, rubber rings 3 with different inner diameters can be replaced. However, when replacing rubber rings 3 with different inner diameters, the outer diameter of rubber ring 3 is not changed. The inner diameter of rubber ring 3 is adjusted by changing the thickness of each area around the circumference of rubber ring 3 to ensure stable clamping and fixing of cables 200 of different diameters.

[0043] In a preferred embodiment, the fixing groove 211 penetrates the sidewalls of both ends of the first arc-shaped clamp 21 and the second arc-shaped clamp 22 to increase the contact area between the positioning ring 31 and the fixing groove 211, thereby improving the installation stability of the rubber ring 3.

[0044] To increase the connection stability between the rubber ring 3 and the cable clamping device 2, in one embodiment, multiple fixing grooves 211 are spaced apart along the height direction of the first arc-shaped clamp 21 and the second arc-shaped clamp 22; correspondingly, the positioning ring 31 is configured to match the number and position of the fixing grooves 211. Increasing the number of positioning rings 31 and fixing grooves 211 enhances connection stability.

[0045] In another embodiment, a rubber sheet is adhered to the inner wall of the fixing groove 211, and at least the outer surface of the positioning ring 31 is made of rubber. Preferably, the rubber sheet is only adhered to the bottom wall of the fixing groove 211 to prevent the rubber sheet from increasing the resistance when the positioning ring 31 is inserted into the fixing groove 211. To ensure the structural strength of the positioning ring 31, the interior of the positioning ring 31 can be made of a rigid material and the exterior can be wrapped with a rubber layer; or the entire positioning ring 31 can be made of rubber.

[0046] This application discloses a gantry crane power supply cable fixing device with a simple structure, easy manufacturing, and low cost. In addition, it is easy to install and disassemble, which can effectively improve the work efficiency of cable 200 installation and maintenance. It can also be reused, which is economical. At the same time, the device of this application has high strength and good stability, which can protect the cable sheath and form a stable support, thereby improving the service life of the cable 200.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portal power supply cable fixing device, characterized in that, include: Fixture (1) is used to clamp and fix the structure inside the gantry crane; The cable clamping device (2) is fixedly connected to the fixing clamp (1) and includes a first arc-shaped clamp (21) and a second arc-shaped clamp (22). The cable (200) is clamped in the first arc-shaped clamp (21) and the second arc-shaped clamp (22). A rubber ring (3) is detachably disposed within the cable clamping device (2) for surrounding the cable (200) and restricting the cable (200) from shifting relative to the rubber ring (3).

2. A door motor power supply cable securing device according to claim 1, characterised in that: The fixing clamp (1) includes a U-shaped clamp (11), a clamping plate (12) is movably disposed inside the U-shaped clamp (11), and an adjusting bolt (13) is fixed on the clamping plate (12). The adjusting bolt (13) passes through the side wall of the U-shaped clamp (11) and is threadedly connected to the U-shaped clamp (11).

3. A door motor power supply cable securing device according to claim 2, characterised in that: The inner wall of the U-shaped clamp (11) has an arc-shaped concave surface, the clamp plate (12) is arc-shaped as a whole, and the arc of the clamp plate (12) matches the arc of the arc-shaped concave surface of the U-shaped clamp (11).

4. A door motor power supply cable securing device according to claim 2, characterised in that: The outer wall of the U-shaped clamp (11) is fixed with a connecting shaft (14) for connecting with the cable clamping device (2).

5. A door motor power supply cable securing device according to claim 1, characterised in that: Both ends of the first arc-shaped clamp (21) and the second arc-shaped clamp (22) are formed with connecting ear plates (23), and a threaded connector (24) is provided between the two connecting ear plates (23) that are connected to the first arc-shaped clamp (21) and the second arc-shaped clamp (22).

6. A door motor power supply cable securing device according to claim 1, characterised in that: The inner walls of the first arc-shaped clamp (21) and the second arc-shaped clamp (22) are provided with fixing grooves (211), and the fixing grooves (211) penetrate through the two end side walls of the first arc-shaped clamp (21) and the second arc-shaped clamp (22); The rubber ring (3) is provided with a positioning ring (31) for insertion into the fixing groove (211).

7. A door motor power supply cable securing device according to claim 1, characterised in that: The rubber ring (3) includes a first arc-shaped pad (32) and a second arc-shaped pad (33). The arc-shaped outer sidewall of the rubber ring (3) matches and fits the arc-shaped inner sidewall of the cable clamping device (2).

8. A door motor power supply cable securing device according to claim 6, characterised in that: Along the height direction of the first arc-shaped clamp (21) and the second arc-shaped clamp (22), the fixing groove (211) is provided in multiple intervals; the positioning ring (31) is provided in accordance with the number and position of the fixing groove (211).

9. A door motor power supply cable securing device according to claim 6, characterised in that: A rubber sheet is attached to the inner wall of the fixing groove (211), and the positioning ring (31) has at least its outer surface made of rubber.

10. A door motor power supply cable securing device according to claim 1, characterised in that: Depending on the cable diameter (200), rubber rings (3) with different inner diameters are replaced. The thickness of the rubber rings (3) with different inner diameters varies in each region around the circumference.

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