A boom / positioning tube end line / cable pull-out value adjustment device

Abstract

The application belongs to the field of railway power supply equipment, and particularly relates to a device for adjusting the pull-out value of the end of a cantilever / positioning tube. The device is used to solve the problems of small end head allowance, large load and high precision requirement of the existing overhead line system. The device comprises a telescopic connecting rod and a jack mechanism. The telescopic rod is positioned and adjusted at the starting point through a threaded rod and an adjusting nut. The connecting piece is fixed to the end of the cantilever / positioning tube. The end of the jack is provided with a traction rope and a suspension mechanism, which symmetrically pulls the overhead line / cable, so as to realize balanced stress. The traction rope can be selected from a steel wire rope, a chain or a high-strength fiber. The suspension mechanism is provided with a U-shaped piece, a plug-in screw rod and a clamping buckle, which prevent the overhead line from rotating and falling off. The device provides high load and precise adjustment, supports various driving modes, improves stability and efficiency, and is suitable for adjusting the pull-out value of the end of the cantilever / positioning tube of the overhead line / cable in the railway curve section, solves the limitations of traditional tools, and improves the power supply reliability and maintenance convenience.

Description

Technical Field

[0001] This application belongs to the field of railway power supply equipment, specifically relating to a device for adjusting the pull-out value of the end wire / cable of a cantilever / positioning tube. Background Technology

[0002] In high-speed railway electrification systems, the catenary and contact wire installed at the end of the cantilever / positioning tube need to have their pull-out values ​​precisely calculated to ensure the parameters of the contact wire and catenary. At the same time, it is necessary to prevent the contact wire surface from twisting and rotating during the stretching process.

[0003] However, in actual construction, especially in curved sections and at locations where the contact wire transition posts are not anchored, adjusting the contact wire pull-out value still requires manual tools, such as hand-operated winches or simple positioning supports (see CN209381840U). These methods are limited by the small allowance at the ends of the cantilever arm / positioning tube (short exposed tube), making it impossible to directly unload or apply a lateral force of approximately 25KN. Meanwhile, while existing intelligent pre-assembly methods (such as servo motor automatic installation, referencing the intelligent pre-assembly construction method for high-speed contact wire cantilever arms) improve assembly efficiency, the adjustment process still requires a large load and meets high precision requirements, and cannot prevent contact wire twisting. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a pull-out value adjustment device that can achieve high load and high adjustment accuracy.

[0005] Technical Solution: To solve the above-mentioned technical problems, this application provides a new technical solution, as follows:

[0006] A device for adjusting the pull-out value of the contact wire / cable at the end of a cantilever / positioning tube, wherein the "wire" refers to the contact wire and the "cable" refers to the catenary used to suspend the contact wire, the device includes a telescopic connecting rod and a jack mechanism connected directly / indirectly in sequence, the telescopic rod being used to position the adjustment starting point of the jack mechanism. This prevents instability caused by excessive adjustment stroke of the jack itself, and by positioning the adjustment starting point of the jack, interference between the contact wire / catenary and the adjustment device itself can be reduced.

[0007] At least one traction rope is provided at the end of the jack mechanism. A suspension mechanism is provided at the end of the traction rope to suspend the contact line / catering cable. To increase stability and force balance, traction ropes can be symmetrically arranged, for example, two or four traction ropes to pull the line / cable.

[0008] The telescopic connecting rod has a connector at its front end, which is used to connect to the end of the wrist arm / positioning tube.

[0009] Furthermore, the telescopic connecting rod includes a threaded rod and an adjusting nut. The adjusting nut is located at the end of the connecting member and can rotate freely relative to the connecting member. By rotating the adjusting nut, the distance between the end of the threaded rod and the end of the wrist arm / positioning tube is adjusted, thereby positioning the starting point of the adjustment stroke of the jack mechanism.

[0010] Furthermore, the connector includes a plug tube, the end of which is provided with a bearing. The plug tube, bearing, and adjusting nut are all coaxially arranged, and the inner or outer ring of the bearing is fixedly connected to the end of the plug tube or one end of the adjusting nut.

[0011] The threaded rod is placed inside the adjusting nut, that is, the threaded rod is located in the cylindrical cavity formed by the insertion tube, bearing, and adjusting nut. The radial stability of the threaded rod is improved by increasing the length of the adjusting nut, or a support sleeve is set inside the insertion tube. No thread is set on the axial movement section of the threaded rod inside the support sleeve.

[0012] Furthermore, a connecting flange is provided at the end of the insertion tube. On the one hand, it is used to connect the bearing. On the other hand, the outer edge of the flange sits on the port of the cantilever / positioning tube after insertion, which plays a tightening role and prevents too much or all of the insertion tube from falling into the cantilever / positioning tube.

[0013] Furthermore, a connecting seat is provided at the end of the threaded rod for connecting the jack mechanism.

[0014] Furthermore, the jack mechanism includes a rhomboid jack and its associated connecting and adjusting devices. The rhomboid jack can provide a large load capacity and has high adjustment precision. One end of its adjusting rod is equipped with any one of a crank handle, a cross rotating frame, or a butterfly handpiece, and its connection method can be set to a detachable connection. The other end is equipped with a square or hexagonal force-bearing seat for connecting other alternative or supplementary driving components, specifically a ratchet wrench, an electric drill drive unit, or other motor driving components.

[0015] Furthermore, the traction rope is a combination of one or more high-strength materials such as steel wire rope, chain, or ultra-high molecular weight polyethylene.

[0016] Furthermore, a suspension mechanism is provided at the end of the traction rope. The suspension mechanism includes a U-shaped component with a insertion hole at the end of the U-shaped component, and a detachable pin is provided in the insertion hole. A fuse or other anti-derailment mechanism may be radially provided at the end of the pin.

[0017] Furthermore, it also includes a clamping buckle; the pin is provided with a through hole, the clamping buckle includes an adjusting bolt that can partially pass through the through hole, and also includes two clamping members that are hinged to each other, the outer clamping member being threadedly connected to the adjusting bolt; a return spring is provided between the two clamping members on the adjusting bolt.

[0018] Furthermore, the clamping buckle includes an adjusting bolt and two clamping members hinged together. The adjusting bolt can partially pass through the inner clamping member, and the outer clamping member is threadedly connected to the adjusting bolt. A return spring is provided on the adjusting bolt between the two clamping members. The lower ends of the two clamping members are provided with opposing inserts for embedding into the contact wire groove. A connecting sleeve is provided on the inner clamping member for fitting onto the pin.

[0019] This application has the following beneficial effects:

[0020] 1. A large load (accommodating 25KN lateral force) is provided through a jack mechanism (such as a diamond jack). Combined with a telescopic connecting rod and an adjusting nut, precise stroke start-up positioning is achieved, reducing adjustment instability and ensuring the accuracy of pull-out value adjustment.

[0021] 2. The telescopic rod positions the starting point of the jack to prevent excessive stroke from causing deviation; the symmetrical traction rope design distributes the force evenly and reduces torsional deformation; the connecting parts (such as the plug pipe and flange) prevent the device from falling into the pipe and improve the stability of the installation.

[0022] 3. Supports multiple drive methods (such as crank handle, ratchet wrench or electric drill) for easy on-site adjustment; the suspension mechanism (U-shaped part and pin) is equipped with clamping buckle and fuse to safely suspend the contact wire / catering wire and reduce the risk of twisting / falling off.

[0023] 3. The traction rope can be made of high-strength materials (such as UHMWPE), which are corrosion-resistant and lightweight; the overall structure simplifies maintenance, is suitable for scenarios with small end allowances, and improves construction efficiency and high tensile strength performance.

[0024] 4. Reduces reliance on manual tools, lowers labor intensity and accident risk, extends equipment life, and is suitable for adjusting the pull-out value of anchor bolts in high-speed railway curve sections and non-supported anchor bolts.

[0025] 5. To enable the adjustment of the lead wire pull-out value at the end of the contact wire bracket and positioning tube without the aid of adjacent line equipment, especially for adjusting the stressed lead wire at large bends.

[0026] 6. It also solves many problems such as the inability to fix the lever hoist during "V" stop operations, the need to add a ground wire to adjacent lines during vertical stop operations, and the inability to unload in single-line sections. Attached Figure Description

[0027] Figure 1 This is a schematic front view of the connection of the connector and adjusting nut according to Embodiment 1 of this application;

[0028] Figure 2 This is a three-dimensional schematic diagram of the connector and adjusting nut connection in Embodiment 1 of this application;

[0029] Figure 3This is a schematic diagram of the internal structure of the connector and adjusting nut connection in Embodiment 1 of this application;

[0030] Figure 4 for Figures 1-3 A schematic diagram of the threaded rod connecting the component shown;

[0031] Figure 5 This is an overall schematic diagram of Embodiment 1 of this application;

[0032] Figure 6 , 7 This is a schematic diagram of Embodiment 2 of this application;

[0033] Figure 8 This is a schematic diagram of the clamping buckle in Embodiment 3 of this application;

[0034] Figure 9 This is an overall schematic diagram of Embodiment 3 of this application;

[0035] In the diagram: 1. Connecting pipe; 2. Flange; 3. Bearing; 4. Mounting platform; 5. Adjusting nut; 6. Threaded rod; 7. Diamond jack; 8. Mounting base; 9. Support end; 10. Traction seat; 11. Adjusting rod; 12. Handle; 13. Force-bearing seat; 14. Chain; 15. U-shaped part; 16. Connecting hole; 17. Pin; 18. Adjusting bolt; 19. Button; 20. Limiting protrusion; 21. Clamping part; 22. Return spring; 23. Connecting pipe; 24. Elastic button. Detailed Implementation

[0036] Example 1:

[0037] A device for adjusting the pull-out value of the end-load cable of a carpenter arm;

[0038] Reference Figure 1-3 The device includes a connector 1 for insertion into the end of the wrist arm. A flange 2 is located at the end of the connector 1. One side of the flange 2 is connected to the port of the wrist arm, and the other side of the flange 2 is equipped with a bearing 3, which is coaxial with the flange 2 / connector 1. In this embodiment, the outer ring of the bearing 3 is fixedly connected to the flange 2, and the inner ring of the bearing 3 is used to connect an adjusting nut 5. For connection stability, in this embodiment, the inner ring of the bearing 3 extends axially beyond the end face of the outer ring and radially expands outward into a frustum as a mounting platform 4 for connecting the adjusting nut 5. The adjusting nut 5 is fixedly connected to the mounting platform 4, allowing the adjusting nut 5 to rotate freely relative to the connector 1.

[0039] Reference Figure 4 The threaded rod 6 is installed inside the insertion tube 1 by means of threaded connection with the adjusting nut 5, and its front end is provided with a mounting seat 8 for connecting the diamond-shaped jack 7.

[0040] Reference Figure 5 The supporting end 9 of the rhomboid jack 7 is provided with a traction seat 10 that can rotate relative to the support seat. The traction seat 10 can be implemented by a closed, fully enclosed traction rope by those skilled in the art to enhance stability and reliability. The attached figure adopts a semi-enclosed method for the purpose of showing the structure.

[0041] The hinge connection method of each link of the rhomboid jack 7 can be implemented by those skilled in the art by referring to the prior art. One end of the adjusting rod 11 of the rhomboid jack 7 is provided with any one of the following: a crank 12, a cross rotating frame, or a butterfly handpiece. Its connection method can be set to a detachable connection. In this embodiment, one end of the adjusting rod 11 in the middle is provided with a crank 12; the other end is provided with a square force-bearing seat 13, which is used to connect other alternative or supplementary driving components, specifically a ratchet wrench, an electric drill drive unit, or other motor drive components.

[0042] Reference Figure 5 The traction rope is a chain 14, and a suspension mechanism is provided at its end. The suspension mechanism includes a U-shaped part 15, and a plug hole 16 is provided at the end of the U-shaped part 15. A detachable pin 17 is provided in the plug hole 16.

[0043] When in use, insert the connector 1 into the end of the cantilever arm and fix the connector 1 to the cantilever arm from the flange 2 (welding or clamp connection can be used). Place the load-bearing cable in the U-shaped parts 15 on both sides. After assembling the pin 17, rotate the adjusting nut 5 to the starting point of the stroke to reduce or avoid interference between the diamond jack 7 and the load-bearing cable, and then rotate the adjusting rod 11 to adjust the pull-out value.

[0044] Example 2:

[0045] A positioning tube end contact wire pull-out adjustment device, embodiment two is generally the same as embodiment one in structure. Compared with embodiment one, its distinguishing technical features are: first, the diameter of the insertion tube 1 needs to be adapted to the diameter of the positioning tube; second, a clamping buckle is provided on the pin 17 for embedding into the contact wire groove for clamping, to prevent the contact wire from twisting due to force during the adjustment process.

[0046] For specific structure reference Figure 6-7 The pin 17 is provided with a through hole, and the clamping buckle includes an adjusting bolt 18. The adjusting bolt 18 can partially pass through the through hole. Specifically, the front end of the adjusting bolt 18 is provided with a butterfly rotating handle 19, and a limiting protrusion 20 is provided in front of the butterfly rotating handle 19. The limiting protrusion 20 contacts and limits the pin 17.

[0047] It also includes two hinged clamping parts 21, with an adjusting bolt 18 passing through an adjusting hole on the clamping part 21. Only the outer clamping part 21 is threadedly connected to the adjusting bolt 18. A return spring 22 is provided between the two clamping parts 21 on the adjusting bolt 18.

[0048] Example 3: A positioning tube end contact wire pull-out value adjustment device. Compared with Example 2, Example 3 has a certain difference in the connection method between the clamping buckle and the pin 17.

[0049] The structure of the clamping buckle in this embodiment is as follows: Figure 8 As shown, a connecting tube 23 is welded to one of the clamping parts 21, and a return spring 22 is also installed inside it; it is used to fit onto the pin 17, and the specific insertion method is as follows. Figure 9 Its clamping method is the same as in Example 2.

[0050] The end of the pin 17 may be radially provided with a fuse or other anti-disengagement mechanism. In this embodiment, refer to... Figure 9 In the enlarged structure shown in the figure, those skilled in the art can use a pin with a flexible button 24. The flexible button is radially arranged near the end of the pin 17. When pressed, it is flush with the side wall of the pin 17 for easy disassembly and installation. After the pin 17 is installed in place, the flexible button 24 pops out to play a limiting role.

Claims

1. A device for adjusting the pull-out value of the end wire / cable of a wrist arm / positioning tube, characterized in that, The device includes a telescopic connecting rod and a jack mechanism that are connected directly or indirectly in sequence. At least one traction rope is provided at the end of the jack mechanism, and a suspension mechanism is provided at the end of the traction rope for suspending the contact wire / catbar. The telescopic connecting rod is provided with a connector at its front end, which is used to connect to the end of the wrist arm / positioning tube.

2. The device for adjusting the pull-out value of the end wire / cable of the wrist arm / positioning tube as described in claim 1, characterized in that, The telescopic connecting rod includes a threaded rod (6) and an adjusting nut (5). The adjusting nut (5) is located at the end of the connecting member and can rotate freely relative to the connecting member.

3. The device for adjusting the pull-out value of the end wire / cable of the wrist arm / positioning tube as described in claim 2, characterized in that, The connector includes a plug tube (1), and a bearing (3) is provided at the end of the plug tube (1). The plug tube (1), the bearing (3), and the adjusting nut (5) are all coaxially arranged. The inner ring or the outer ring of the bearing (3) is fixedly connected to the end of the plug tube (1) or one end of the adjusting nut (5). The threaded rod (6) is placed inside the adjusting nut (5).

4. The device for adjusting the pull-out value of the end wire / cable of the wrist arm / positioning tube as described in claim 3, characterized in that, The end of the insertion tube (1) is provided with a connecting flange (2) for connecting the bearing (3).

5. The device for adjusting the pull-out value of the end wire / cable of the wrist arm / positioning tube as described in claim 4, characterized in that, The threaded rod (6) is provided with a connecting seat at its end for connecting the jack mechanism.

6. The wrist arm / positioning tube end line / cable pull-out adjustment device as described in any one of claims 1-5, characterized in that, The jack mechanism includes a rhombus jack (7), and one end of the adjusting rod (11) of the rhombus jack (7) is provided with any one of a crank handle (12), a cross rotating frame, or a butterfly handpiece, and the other end is provided with a square or hexagonal force-bearing seat (13).

7. The wrist arm / positioning tube end line / cable pull-out value adjustment device as described in claim 6, characterized in that, The traction rope is a wire rope and / or a chain (14).

8. The wrist arm / positioning tube end line / cable pull-out value adjustment device as described in claim 7, characterized in that, The end of the traction rope is provided with a suspension mechanism, which includes a U-shaped part (15), the end of the U-shaped part (15) is provided with a plug hole (16), and a detachable pin (17) is provided in the plug hole (16).

9. The wrist arm / positioning tube end line / cable pull-out value adjustment device as described in claim 8, characterized in that, It also includes clamping buckles; The pin (17) is provided with a through hole. The clamping buckle includes an adjusting bolt (18) that can partially pass through the through hole. It also includes two clamping members (21) that are hinged to each other. The clamping member (21) located on the outside is threadedly connected to the adjusting bolt (18). A return spring (22) is provided between the two clamping members (21) on the adjusting bolt (18).

10. The wrist arm / positioning tube end line / cable pull-out value adjustment device as described in claim 8, characterized in that, It also includes clamping buckles; The clamping buckle includes an adjusting bolt (18) and two clamping members (21) that are hinged to each other. The adjusting bolt (18) can partially pass through the clamping member (21) located on the inner side. The clamping member (21) located on the outer side is threadedly connected to the adjusting bolt (18). A return spring (22) is provided between the two clamping members (21) on the adjusting bolt (18). A connecting sleeve is provided on the clamping member (21) located on the inner side. The connecting sleeve is sleeved on the pin (17).

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