Contact rail expansion joint adjusting device

Abstract

The utility model provides a contact rail expansion joint adjusting device which comprises a two-way threaded screw rod, a pipe jacking assembly arranged on the two-way threaded screw rod and a two-way ratchet mechanism used for driving the two-way threaded screw rod to rotate, a ratchet wheel of the two-way ratchet mechanism is fixedly connected with the middle of the two-way threaded screw rod, and the pipe jacking assembly comprises two round pipes. The two round pipes are in threaded connection with the two ends of the two-way threaded lead screw correspondingly, and the ends, away from the threaded rod, of the round pipes are connected with the L-shaped plate. The expansion joint is simple and efficient, the problems of violent adjustment, high operation risk, low adjustment precision, low efficiency and the like of a traditional expansion joint are solved, high-precision adjustment of the expansion joint can be achieved, and the professionalism and scientificity of equipment maintenance of a contact rail system are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tracks, and particularly relates to an adjusting device for a contact rail expansion joint. Background Art

[0002] In the contact rail system of urban rail transit, the expansion joint plays a role in mechanical connection and electrical connection in the contact rail power supply line, and at the same time compensates for the expansion and contraction caused by thermal expansion and contraction of the power supply line. It is an important component device of the entire contact rail power supply system.

[0003] At present, for the adjustment of the expansion joint of the contact rail system in urban rail transit, it is mainly adjusted by knocking with a rubber hammer and a wooden square, which has problems such as violent adjustment, high operation risk, low adjustment accuracy, and extremely low efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an adjusting device for a contact rail expansion joint, which is simple and efficient, avoids the problems of violent adjustment, high operation risk, low adjustment accuracy, and low efficiency in the traditional expansion joint adjustment, can realize high-precision adjustment of the expansion joint, and improve the professionalism and scientificity of the equipment maintenance of the contact rail system.

[0005] The utility model is realized by the following technical solutions:

[0006] An adjusting device for a contact rail expansion joint includes a bidirectional threaded screw rod, a pipe jacking assembly arranged on the bidirectional threaded screw rod, and a bidirectional ratchet mechanism for driving the bidirectional threaded screw rod to rotate. The ratchet of the bidirectional ratchet mechanism is fixedly connected to the middle of the bidirectional threaded screw rod. The pipe jacking assembly includes two round pipes, and the two round pipes are respectively threadedly connected to the two ends of the bidirectional threaded screw rod. The end of the round pipe far from the screw rod is connected to an L-shaped plate.

[0007] Further, a fixing nut is arranged in the middle of the bidirectional threaded screw rod, and the ratchet of the bidirectional ratchet mechanism is fixedly connected to the fixing nut.

[0008] Further, the number of the pipe jacking assemblies is multiple, the lengths of the round pipes of the multiple pipe jacking assemblies are different, and each pipe jacking assembly can be selectively arranged on the bidirectional threaded screw rod.

[0009] Further, an adjusting nut is arranged inside the end of the round pipe far from the L-shaped plate, and the adjusting nut is threadedly connected to the bidirectional threaded screw rod.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] (1) By controlling the rotation of the ratchet to drive the bidirectional threaded screw rod to rotate counterclockwise or clockwise, the two round tubes on the bidirectional threaded screw rod move away from or close to each other, achieving the purpose of adjusting the expansion joint of the contact rail, avoiding problems such as violent adjustment, high operation risk, low adjustment accuracy, and low efficiency in traditional expansion joint adjustment, enabling high-precision adjustment of the expansion joint, and improving the professionalism and scientificity of the maintenance of contact rail system equipment;

[0012] (2) This device has a lightweight structure, which is simple and effective, reducing the weight of the device, improving the portability of carrying and operation. One person can complete the operation, avoiding the cumbersome process of configuring multiple people to operate. With the design of a bidirectional threaded screw rod and a bidirectional ratchet mechanism, the adjustment accuracy reaches 1 mm, greatly improving the accuracy of adjustment, ensuring that the high-standard requirements for the maintenance of the contact rail system are met. Compared with the traditional adjustment method of the expansion joint of the contact rail system, it can reduce the impact on the equipment during the adjustment of key equipment of the expansion joint, reduce the wear degree of the equipment, extend the service life of the equipment, and improve the reliability of the equipment. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the adjustment device for the expansion joint of the contact rail of the present utility model;

[0014] Figure 2 is a front view of the adjustment device for the expansion joint of the contact rail of the present utility model.

[0015] In the figure, 1 - bidirectional threaded screw rod, 2 - bidirectional ratchet mechanism, 21 - ratchet, 3 - round tube, 4 - L-shaped plate, 5 - fixing nut. Detailed Embodiment

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0018] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0019] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model.

[0021] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of the contact rail expansion joint adjustment device of the present utility model, Figure 2 and

[0022] When the expansion joint adjusting device of the current utility model is in use, the two L-shaped plates 4 are respectively aligned and fixed firmly with the fish plates of the expansion joint. Since the ratchet of the bidirectional ratchet mechanism 2 is fixedly connected to the bidirectional threaded rod 1, the operator can repeatedly rotate the handle of the bidirectional ratchet mechanism 2, thereby driving the bidirectional threaded rod 1 to rotate counterclockwise or clockwise by controlling the rotation of the ratchet. And because both ends of the bidirectional threaded rod 1 have external threads with opposite thread directions, the two round tubes 3 are at both ends of the bidirectional threaded rod 1 with opposite thread directions, and the L-shaped plates 4 on the two round tubes 3 are respectively aligned and fixed firmly with the fish plates of the expansion joint, so that the round tubes 3 will not rotate along with the bidirectional threaded rod 1. When the bidirectional threaded rod 1 rotates counterclockwise or clockwise, it will cause the two round tubes 3 to move away from or close to each other, thereby realizing the fine adjustment of the length of the expansion joint adjusting device of the current utility model. The bidirectional ratchet mechanism 2 and the bidirectional threaded rod 1 are both common structures in the prior art, and will not be elaborated here.

[0023] In one embodiment, a fixing nut 5 is provided in the middle of the bidirectional threaded rod 1, and the ratchet of the bidirectional ratchet mechanism 2 is fixedly connected to the fixing nut 5. Setting the fixing nut 5 on the bidirectional threaded rod 1 facilitates the fixed connection between the ratchet of the bidirectional ratchet mechanism 2 and the bidirectional threaded rod 1.

[0024] In one embodiment, an adjusting nut is provided inside the end of the round tube 3 away from the L-shaped plate 4, and the adjusting nut is threadedly connected to the bidirectional threaded rod 1. Setting the adjusting nut threadedly connected to the bidirectional threaded rod 1 inside the round tube 3 facilitates the production and assembly of the pipe jacking assembly, and at the same time facilitates the threaded connection between the round tube 3 and the bidirectional bolt screw.

[0025] In one embodiment, the number of pipe jacking assemblies is multiple, the lengths of the round tubes 3 of the multiple pipe jacking assemblies are different, and each pipe jacking assembly can be selectively arranged on the bidirectional threaded rod 1. The lengths of the round tubes 3 of the multiple pipe jacking assemblies are different, and the pipe jacking assemblies can be replaced according to needs to adapt to the adjustment of different expansion joint data of the contact rail, so that the device can adjust expansion joints of various ranges, improving the applicability and practicability of the device, thereby making the device have the characteristics of being expandable and high flexibility.

[0026] The above are only the preferred embodiments of the current utility model, and do not impose any form of limitation on the current utility model. Therefore, any simple modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the current utility model without departing from the technical solution of the current utility model still fall within the scope of the technical solution of the current utility model.

Claims

1. A contact rail expansion joint adjustment device, characterized in that: It includes a bidirectional threaded screw, a jacking pipe assembly arranged on the bidirectional threaded screw and a bidirectional ratchet mechanism for driving the bidirectional threaded screw to rotate, the ratchet of the bidirectional ratchet mechanism is fixedly connected to the middle part of the bidirectional threaded screw, the jacking pipe assembly includes two round tubes, the two round tubes are respectively threadedly connected to the two ends of the bidirectional threaded screw, and the end of the round tube away from the screw is connected to the L-shaped plate.

2. The contact rail expansion joint adjustment device according to claim 1, characterized in that: A fixing nut is provided in the middle of the bidirectional threaded screw rod, and the ratchet of the bidirectional ratchet mechanism is fixedly connected to the fixing nut.

3. The contact rail expansion joint adjustment device according to claim 1, characterized in that: There are multiple jacking pipe assemblies, and the lengths of the round pipes of the multiple jacking pipe assemblies are different. Each of the jacking pipe assemblies can be selectively arranged on a bidirectional threaded screw.

4. The contact rail expansion joint adjustment device according to claim 1, characterized in that: An adjusting nut is arranged inside one end of the round tube away from the L-shaped plate, and the adjusting nut is threadedly connected with the bidirectional threaded lead screw.

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