An auxiliary device for changing suspension strings

Abstract

This utility model provides an auxiliary device for changing dropper wires, belonging to the field of dropper wire technology for railway catenary systems. The auxiliary device includes: a tightening device, a lifting component, and a clamping assembly; the tightening device is connected to the lifting component; the clamping assembly is mounted on the tightening device. This auxiliary device can directly achieve the secure locking of the copper tube and the support ring in mid-air, eliminating the need for pre-assembly of the dropper wires on the ground as required by existing technologies.

Description

Technical Field

[0001] This utility model relates to the field of dropper technology for railway catenary, specifically to an auxiliary device for dropper replacement. Background Technology

[0002] The railway overhead contact system is a crucial component of the electrified railway power supply system, its primary function being to provide a continuous and stable electrical energy supply to electric locomotives. The dropper, a key component of the contact system suspension system, connects the contact wire and the catenary cable, maintaining the contact wire's height and tension stability. If a dropper breaks, it may not only cause the dropper itself to detach but also lead to contact wire breakage or other safety accidents, seriously threatening the safety of railway operations. Therefore, damaged droppers must be replaced promptly during actual use.

[0003] Currently, common droppers typically consist of a heart-shaped support ring, a dropper body, and a copper tube for locking. The support ring is usually fixed to the catenary, the dropper body connects the contact wire to the support ring, and the copper tube is used to lock and fix the dropper body in place by crimping. This structural design ensures that the dropper has good load-bearing capacity and reliable connection.

[0004] For replacing damaged droppers, the existing method typically involves pre-assembly on the ground: Workers first need to loop the dropper body around the support ring, insert it into the copper tube, and then push the copper tube 1-3mm into the support ring, tightening the dropper body to a certain extent. After pre-assembly, workers then carry the assembled dropper to the work location for replacement. This method requires prior measurement, relies on prefabrication with ground equipment, and is cumbersome and inefficient. Utility Model Content

[0005] According to an embodiment of the present invention, an auxiliary device for changing suspension strings is provided. This addresses the problems mentioned in the background section.

[0006] In a first aspect, an auxiliary device for changing suspension strings is provided.

[0007] The auxiliary device for changing the dropper includes: a tensioner, a lifting member, and a clamping assembly; the tensioner is connected to the lifting member; and the clamping assembly is mounted on the tensioner.

[0008] Preferably, the clamping assembly includes a fixed plate, a movable plate, a guide rail, and a drive assembly;

[0009] The fixed plate is mounted on the clamping device, the guide rail is fixedly connected to the fixed plate, the movable plate is slidably connected to the guide rail, and the driving assembly is connected to the fixed plate and the movable plate respectively, for driving the movable plate to move closer to the fixed plate.

[0010] Preferably, the clamping assembly further includes two anti-slip pads, which are respectively disposed on the fixed plate and the movable plate.

[0011] Preferably, the drive assembly includes a connecting shaft, a rotating shaft, a handle, and two cams; the connecting shaft is fixedly mounted on the fixed plate, the connecting shaft passes through the movable plate, the movable plate is slidably connected to the connecting shaft, the rotating shaft is rotatably connected to the end of the connecting shaft away from the fixed plate, the cams are fixedly connected to the rotating shaft, and the handle is fixedly connected to the rotating shaft.

[0012] Preferably, it also includes a return spring, which is sleeved on the connecting shaft.

[0013] Preferably, the clamping assembly further includes a limiting member, which is fixedly connected to the fixing plate. Two limiting arms are connected to the limiting member, and a limiting space for accommodating the handle is formed between the two limiting arms. A limiting ball is provided on one side of each of the two limiting arms.

[0014] Preferably, the clamping device includes a handle, a lifting column, an operating lever, a first spring, a second spring, a locking plate, and a driving plate;

[0015] The grip includes a mounting part and a hand-held part, which are integrally formed. The mounting part has an accommodating notch. The operating lever is rotatably connected to the grip. The lifting column passes through the grip and is slidably connected to it. A lever is fixedly connected to the operating lever. The driving plate has a notch for the lifting column to pass through. The notch is larger than the cross-section of the lifting column. The lifting column passes through the notch in the driving plate. The driving plate is located within the accommodating notch. A first spring is sleeved on the lifting column. One end of the first spring contacts the mounting part, and the other end of the first spring contacts the driving plate. The driving plate contacts the lever. Under the elastic force of the first spring, the driving plate is tilted.

[0016] The locking plate is rotatably connected to the mounting part. One end of the second spring contacts the mounting part, and the other end of the second spring contacts the locking plate. Under the elastic force of the second spring, the locking plate is tilted.

[0017] Preferably, the lifting member includes a connecting rod with two limiting claws extending from it, and a limiting space for accommodating the dropper body is formed between the two limiting claws.

[0018] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0019] This utility model provides an auxiliary device for replacing dropper bodies. A clamping assembly holds and fixes the dropper body, ensuring its stability during operation and preventing misalignment between the dropper body and the support ring due to manual operation difficulties or shaking. A lifting component is pre-positioned below the copper tube. Driven by a tightening device, the lifting component rises, causing the copper tube to move along the dropper body until it is firmly pressed against the bottom of the support ring. This auxiliary device can achieve a 1-3mm compression between the copper tube and the support ring directly in mid-air, eliminating the need for pre-assembly of the dropper on the ground as in existing technologies. This method allows for installation of the new dropper by comparing it to the old dropper dimensions, reducing measurement and prefabrication steps, and enabling operators to quickly and accurately complete dropper replacement operations in high-altitude environments, significantly improving replacement efficiency.

[0020] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0021] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0022] Figure 1 A first-view perspective three-dimensional structural schematic diagram of the auxiliary device for changing suspenders according to an embodiment of the present invention is shown;

[0023] Figure 2 A second-view perspective three-dimensional structural schematic diagram of the auxiliary device for changing suspenders according to an embodiment of the present invention is shown;

[0024] Figure 3 A cross-sectional schematic diagram of an auxiliary device for changing suspension wires according to an embodiment of the present invention is shown;

[0025] Figure 4 A perspective view of the clamping assembly of the auxiliary device for changing the suspender according to an embodiment of the present invention is shown;

[0026] Figure 5 An exploded view of the clamping assembly of the auxiliary device for changing the dropper string according to an embodiment of the present invention is shown;

[0027] Figure 6 A three-dimensional structural schematic diagram of the clamping assembly of the auxiliary device for changing the dropper according to an embodiment of the present invention is shown, in which the dropper body is clamped.

[0028] Figure 7A three-dimensional structural schematic diagram of the grip of the auxiliary device for changing the suspender string according to an embodiment of the present invention is shown;

[0029] Figure 8 A perspective view of the operating lever of the auxiliary device for changing the dropper string according to an embodiment of the present invention is shown;

[0030] Figure 9 A three-dimensional structural schematic diagram of the locking piece of the auxiliary device for changing the suspender according to an embodiment of the present invention is shown;

[0031] Figure 10 A schematic diagram showing the connection between the auxiliary device for changing the dropper and the dropper body according to an embodiment of the present invention is shown.

[0032] Explanation of reference numerals in the attached figures

[0033] 1-Tightening device, 11-Grip, 111-Mounting part, 112-Handheld part, 113-Accommodation notch, 12-Lifting column, 13-Operating lever, 131-Toggle lever, 14-First spring, 15-Second spring, 16-Locking plate, 17-Drive plate, 2-Lifting component, 21-Connecting rod, 22-Limiting claw, 3-Clamping assembly, 31-Fixing plate, 32-Moving plate, 33-Guide rail, 34-Drive assembly, 341-Connecting shaft, 342-Rotating shaft, 343-Handle, 344-Cam, 35-Anti-slip pad, 36-Limiting component, 361-Limiting arm, 362-Limiting ball, 37-Reset spring, 4-Suspension string body, 5-Copper tube, 6-Support ring. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0036] like Figures 1 to 10As shown, the auxiliary device for changing the dropper includes a tensioner 1, a lifting member 2, and a clamping assembly 3. The tensioner 1 is connected to the lifting member 2, and the clamping assembly 3 is mounted on the tensioner 1. This structural arrangement allows the lifting member 2 to move stably up and down under the drive of the tensioner 1. Simultaneously, the clamping assembly 3 forms a reliable fixed fit with the dropper body 4, thus providing the necessary mechanical support and positional guidance for the dropper changing operation.

[0037] In practical use, the operator carries the dropper body 4, copper tube 5, and support ring 6 to the dropper replacement position. First, the dropper body 4 is wrapped around the support ring 6, and then the dropper body 4 is passed through the copper tube 5. Figure 10 As shown. Subsequently, the dropper body 4 is clamped and fixed by the clamping assembly 3, so that the dropper body 4 remains stable during operation and avoids misalignment of the dropper body 4 relative to the support ring 6 due to inconvenience of manual operation or shaking. At this time, the lifting member 2 is pre-positioned below the copper tube 5. Under the driving action of the tightening device 1, the lifting member 2 is lifted upward, thereby driving the copper tube 5 to move upward along the dropper body 4 until the copper tube 5 is pressed tightly against the bottom position of the support ring 6.

[0038] Through the aforementioned structure and coordinated actions, this auxiliary device can directly secure the copper tube 5 and the support ring 6 in mid-air, eliminating the need for pre-assembly of the dropper on the ground as required by existing technologies. It can maintain a 1-3mm compression between the copper tube and the support ring directly in the air, without requiring pre-assembly of the dropper on the ground as in existing technologies. This method allows for the installation of new droppers by comparing them to the old dropper dimensions, reducing measurement and prefabrication steps, and enabling operators to quickly and accurately complete dropper replacement operations in high-altitude environments, significantly improving replacement efficiency.

[0039] This auxiliary device can be carried by operators to the high-altitude work site, placed in a special tool bag, and easily climbed or transported to the high-altitude work position by lifting equipment. It requires no external power source or heavy tools, is simple to operate, and ensures flexible use even in narrow or complex high-altitude environments.

[0040] Meanwhile, by utilizing the lifting force transmission effect of the tensioner 1, it is possible to ensure that the copper tube 5 is subjected to uniform force during the upward movement, thus avoiding the impact of uneven force on the fit between the suspension body 4 and the support ring 6, thereby further improving the reliability of installation and the safety of use.

[0041] In this embodiment, the clamping assembly 3 includes a fixed plate 31, a movable plate 32, a guide rail 33, and a driving assembly 34. The fixed plate 31 is securely mounted on the clamping device 1, providing a support reference for the entire clamping assembly 3. The guide rail 33 is fixedly connected to the fixed plate 31, forming a sliding channel that defines the movement direction of the movable plate 32. The movable plate 32 is slidably connected to the guide rail 33, enabling it to move linearly along the extension direction of the guide rail 33, ensuring the stability and accuracy of its movement. The driving assembly 34 is connected to both the fixed plate 31 and the movable plate 32, and during driving, it enables the movable plate 32 to move towards the fixed plate 31, thereby clamping the dropper body 4. Through this structural design, the clamping assembly 3 possesses both rigid support and flexible adjustment characteristics during operation.

[0042] In actual use, the operator places the dropper body 4 between the fixed plate 31 and the movable plate 32. Then, the drive assembly 34 is activated and pushes the movable plate 32 along the guide rail 33 towards the fixed plate 31. As the movable plate 32 gradually approaches the fixed plate 31, the dropper body 4 is stably pressed and fixed. During this process, because the guide rail 33 effectively constrains the movement direction of the movable plate 32, the movable plate 32 will not shift or tilt during movement, thus ensuring that the pressure applied to the dropper body 4 is uniform and reliable. This not only avoids shaking or displacement of the dropper body 4 during clamping but also maintains the relative positional relationship between the dropper body 4, the copper tube 5, and the support ring 6, facilitating the subsequent pushing of the copper tube 5 to the locking position by the lifting component 2.

[0043] In this embodiment, the clamping assembly 3 further includes two anti-slip pads 35, which are respectively disposed on the fixed plate 31 and the movable plate 32. The anti-slip pads 35 are designed to increase friction and improve the clamping effect on the suspension cable body 4.

[0044] In this embodiment, the drive assembly 34 includes a connecting shaft 341, a rotating shaft 342, a handle 343, and two cams 344. The connecting shaft 341 is fixedly mounted on the fixed plate 31, passes through the movable plate 32, and is slidably connected to the connecting shaft 341. The rotating shaft 342 is rotatably connected to the end of the connecting shaft 341 away from the fixed plate 31. The cams 344 are fixedly connected to the rotating shaft 342, and the handle 343 is fixedly connected to the rotating shaft 342.

[0045] In the initial state, such as Figure 6As shown, at this time, there is space between the fixed plate 31 and the movable plate 32 to accommodate the suspender body 4, and no clamping action is performed. After placing the suspender body 4 between the fixed plate 31 and the movable plate 32, directly move the handle 343. The handle 343 drives the rotating shaft 342 to rotate, which in turn drives the cam 344 to rotate. The rotation of the cam 344 will drive the movable plate 32 to slide on the guide rail 33 until the handle 343 is moved to the desired position. Figure 2 The state shown causes the movable plate 32 and the fixed plate 31 to clamp the suspension cable body 4. Figure 4 As shown, the cam 344 is provided with a contact surface. When the contact surface contacts the side of the movable plate 32 away from the fixed plate 31, the cam 344 is in a stable state, and the dropper body 4 is also stably clamped. When it is necessary to release the clamping of the dropper body 4, the handle 343 is turned in the opposite direction to return the handle 343 to the position shown. Figure 6 The initial state shown indicates that the clamping on the suspension cable body 4 can be released.

[0046] In this embodiment, a return spring 37 is also included, which is sleeved on the connecting shaft 341. The return spring 37 provides a spring force to the movable plate 32 away from the fixed plate 31. After releasing the clamp on the suspension cable body 4, the return spring 37 can drive the movable plate 32 to return to its original position. Figure 6 The initial state is shown.

[0047] In this embodiment, the clamping assembly 3 further includes a limiting member 36, which is fixedly connected to the fixing plate 31. Two limiting arms 361 are connected to the limiting member 36, and a limiting space for accommodating the handle 343 is formed between the two limiting arms 361. A limiting ball 362 is provided on one side of the two limiting arms 361 respectively.

[0048] The two limiting arms 361 are elastic and can deform to a certain extent. The handle 343 is moved to contact the limiting ball 362. Then the handle 343 is moved again, so that the handle 343 passes through the two limiting balls 362. The two limiting balls 362 limit the handle 343, improve the stability of the handle 343, and thus improve the stability of clamping the suspension body 4.

[0049] In this embodiment, the clamping device 1 includes a handle 11, a lifting column 12, an operating rod 13, a first spring 14, a second spring 15, a locking plate 16, and a driving plate 17.

[0050] The grip 11 includes a mounting part 111 and a hand-held part 112, which are integrally formed. The mounting part 111 has a receiving notch 113. The operating lever 13 is rotatably connected to the grip 11. The lifting column 12 passes through the grip 11 and is slidably connected to it. A lever 131 is fixedly connected to the operating lever 13. The driving plate 17 has a notch for the lifting column 12 to pass through. The notch is larger than the cross-section of the lifting column 12. The lifting column 12 passes through the notch of the driving plate 17, which is located within the receiving notch 113. A first spring 14 is sleeved on the lifting column 12. One end of the first spring 14 contacts the mounting part 111, and the other end contacts the driving plate 17. The driving plate 17 contacts the lever 131. Under the elastic force of the first spring 14, the driving plate 17 is tilted.

[0051] The locking piece 16 is rotatably connected to the mounting part 111. One end of the second spring 15 contacts the mounting part 111, and the other end of the second spring 15 contacts the locking piece 16. Under the elastic force of the second spring 15, the locking piece 16 is in an inclined state.

[0052] When the operating lever 13 is not subjected to external force, the first spring 14 provides elastic force to the drive plate 17. One side of the drive plate 17 contacts the lever 131 and cannot move, causing the drive plate 17 to tilt. Since one end of the locking plate 16 is rotatably connected to the mounting part 111, the locking plate 16 also tilts under the elastic force of the second spring 15. Figure 3 As shown, the driving plate 17 and the locking plate 16 are tilted in opposite directions.

[0053] by Figure 3 For example, when a higher operation is required, press down on the operating lever 13. The operating lever 13 will drive the lever 131 to move upward (like a lever principle). The lever 131 will drive the drive plate 17 to tilt at a larger angle, and at the same time drive the drive plate 17 to move. Since the drive plate 17 is in an inclined state, the notch on the drive plate 17 is in close contact with the lifting column 12. The inclined movement of the drive plate 17 will drive the lifting column 12 to move upward with the help of the notch. At the same time, the first spring 14 is compressed, canceling the pressing of the operating lever 13. The first spring 14 will drive the drive plate 17 to move downward. Under the locking action of the locking plate 16, the lifting column 12 will not move downward relative to the mounting part 111. At the same time, the drive plate 17 moves downward relative to the lifting column 12, and drives the operating lever 13 to reset. By repeating this operation, the lifting column 12 can be driven to move upward relative to the handle 11. The lifting column 12 will drive the lifting member 2 to move upward.

[0054] When it is necessary to release the locking of the locking plate 16 onto the lifting column 12, press the locking plate 16 to rotate it towards the hand handle 112, so that the locking plate 16 tends to be horizontal. This will release the locking effect of the notch on the locking plate 16 onto the lifting column 12. Then the lifting column 12 can be moved to any position for the next lifting operation.

[0055] In this embodiment, the lifting member 2 includes a connecting rod 21, from which two limiting claws 22 extend, forming a limiting space between the two limiting claws 22 to accommodate the dropper body 4. When the dropper body 4 is placed between the two limiting claws 22, as the lifting member 2 moves upward, the upper side of the limiting claws 22 of the lifting member 2 contacts the bottom of the copper tube 5, and the lifting member 2 will drive the copper tube 5 upward until the copper tube 5 presses against the support ring 6.

[0056] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An auxiliary device for changing a dropper string, characterized in that, include: A clamping device (1), a lifting member (2), and a clamping assembly (3); the clamping device (1) is connected to the lifting member (2); the clamping assembly (3) is mounted on the clamping device (1).

2. The auxiliary device for changing the dropper string according to claim 1, characterized in that, The clamping assembly (3) includes a fixed plate (31), a movable plate (32), a guide rail (33), and a drive assembly (34). The fixed plate (31) is mounted on the clamping device (1), the guide rail (33) is fixedly connected to the fixed plate (31), the movable plate (32) is slidably connected to the guide rail (33), and the driving assembly (34) is connected to the fixed plate (31) and the movable plate (32) respectively, for driving the movable plate (32) to move closer to the fixed plate (31).

3. The auxiliary device for changing the dropper according to claim 2, characterized in that, The clamping assembly (3) also includes two anti-slip pads (35), which are respectively disposed on the fixed plate (31) and the movable plate (32).

4. The auxiliary device for changing the dropper according to claim 2, characterized in that, The drive assembly (34) includes a connecting shaft (341), a rotating shaft (342), a handle (343), and two cams (344). The connecting shaft (341) is fixedly mounted on the fixed plate (31), the connecting shaft (341) passes through the movable plate (32), the movable plate (32) is slidably connected to the connecting shaft (341), the rotating shaft (342) is rotatably connected to the end of the connecting shaft (341) away from the fixed plate (31), the cams (344) are fixedly connected to the rotating shaft (342), and the handle (343) is fixedly connected to the rotating shaft (342).

5. The auxiliary device for changing the dropper according to claim 4, characterized in that, It also includes a return spring (37), which is sleeved on the connecting shaft (341).

6. The auxiliary device for changing the dropper according to claim 4, characterized in that, The clamping assembly (3) further includes a limiting member (36), which is fixedly connected to the fixing plate (31). Two limiting arms (361) are connected to the limiting member (36), and a limiting space for accommodating the handle (343) is formed between the two limiting arms (361). A limiting ball (362) is provided on one side of the two limiting arms (361).

7. The auxiliary device for changing the dropper according to claim 1, characterized in that, The clamping device (1) includes a handle (11), a lifting column (12), an operating lever (13), a first spring (14), a second spring (15), a locking plate (16), and a driving plate (17). The grip (11) includes a mounting part (111) and a hand-held part (112), which are integrally formed. The mounting part (111) has an accommodating notch (113). The operating lever (13) is rotatably connected to the grip (11). The lifting column (12) passes through the grip (11) and is slidably connected to it. A lever (131) is fixedly connected to the operating lever (13). The drive plate (17) has a notch for the lifting column (12) to pass through, and the notch is larger than... The cross-section of the lifting column (12) is such that the lifting column (12) passes through the notch of the driving plate (17), the driving plate (17) is located in the receiving notch (113), the first spring (14) is sleeved on the lifting column (12), one end of the first spring (14) is in contact with the mounting part (111), the other end of the first spring (14) is in contact with the driving plate (17), the driving plate (17) is in contact with the lever (131), and under the elastic force of the first spring (14), the driving plate (17) is in an inclined state; The locking piece (16) is rotatably connected to the mounting part (111). One end of the second spring (15) is in contact with the mounting part (111), and the other end of the second spring (15) is in contact with the locking piece (16). Under the elastic force of the second spring (15), the locking piece (16) is in an inclined state.

8. The auxiliary device for changing the dropper according to claim 1, characterized in that, The lifting member (2) includes a connecting rod (21) with two limiting claws (22) extending from the connecting rod (21), forming a limiting space between the two limiting claws (22) to accommodate the suspension body (4).

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