A spring guide

Abstract

This application discloses a spring guiding device, relating to the field of rail vehicle technology. The device includes: a pin with a mounting groove on its surface; a spring guide rod with a mounting through hole at one end, the pin inserted into the mounting through hole, the mounting groove located outside the mounting through hole along the length of the pin, and the central axis of the mounting groove coinciding with the central axis of the spring guide rod; a retractable spring sleeved on the spring guide rod; and an axially movable spring fixing seat sleeved on the spring guide rod, the end of the spring fixing seat facing the mounting through hole being fixedly connected to the area of ​​the mounting groove outside the mounting through hole; and the end of the spring facing the mounting through hole being installed inside the spring fixing seat. This application limits the radial displacement of the spring by using the spring fixing seat and fixes the spring fixing seat to the pin, effectively preventing the spring rod from deviating from the structural center due to insufficient constraint, thus avoiding wear. This meets the actual needs of high-speed trains while controlling costs.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, specifically to a spring-guided device. Background Technology

[0002] Currently, a type of vacuum circuit breaker used on high-speed trains has experienced multiple malfunctions where the spring rod of the toggle mechanism breaks, preventing the main circuit breaker from opening properly. Disassembly revealed that all spring rods had annular indentations on the lower part of the slot, the location of the washer when the circuit breaker closes. The reason for these indentations (wear marks) is that during the operation of the main circuit breaker, the washer and spring rod inevitably come into contact. When the spring rod deviates from the structural center due to insufficient constraint, the washer, under the action of the spring, twists and turns, causing annular shearing and accelerated wear on the spring rod.

[0003] Therefore, to meet practical needs, a spring guide device is now provided. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide a spring guiding device that limits the radial displacement of the spring by using a spring fixing seat and fixes the spring fixing seat to the pin shaft. This effectively prevents the spring rod from deviating from the structural center due to insufficient constraint, thus avoiding wear. Under the premise of controlling costs, this device meets the actual needs of high-speed trains.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides a spring guide device, the device comprising: A pin, the surface of which is provided with a mounting groove; A spring guide rod, one end of which is provided with a mounting through hole, a pin is inserted into the mounting through hole, and the two ends of the mounting groove along the length direction of the pin are located outside the mounting through hole, with the central axis of the mounting groove coinciding with the central axis of the spring guide rod; A retractable spring sleeved on the spring guide rod; Spring retainer, the spring retainer comprising: A base plate for fixing the seat, wherein a through hole for fixing the seat is provided at the center of the base plate for fixing the seat; The ring wall has a cylindrical structure, one end of which is connected to the outer edge of the base plate of the fixing seat to form a cylindrical structure. The through hole of the fixing seat is concentric with the ring wall. The through hole of the fixing seat is sleeved on the spring guide rod so that the spring fixing seat can move axially along the spring guide rod; The base plate of the spring fixing seat facing the mounting through hole is fixedly connected to the area of ​​the mounting groove located outside the mounting through hole; The end of the spring facing the mounting through hole is installed inside the annular wall; wherein... The spring and the pin are located on opposite sides of the spring mounting base.

[0006] Based on the above technical solution, in the initial state, the free end of the spring guide rod is located inside the spring.

[0007] Based on the above technical solution, the diameter of the through hole of the fixing seat matches the outer diameter of the spring guide rod; The first installation gap between the inner edge of the through hole of the fixing seat and the outer wall of the spring guide rod is configured to allow the spring fixing seat to move freely along the axial direction of the spring guide rod; The inner diameter of the annular wall matches the outer diameter of the spring, and the second mounting gap between the annular wall and the spring is configured not to impede the extension and retraction of the spring.

[0008] The first mounting gap and the second mounting gap are configured such that the spring guide rod does not contact the spring.

[0009] Based on the above technical solution, one end of the spring is fixed inside the spring fixing seat and is fixed to the base plate of the fixing seat or the inner wall of the annular wall.

[0010] Compared with the prior art, the advantages of this application are: This application restricts the radial displacement of the spring by using a spring fixing seat and fixes the spring fixing seat to the pin shaft, effectively preventing the spring rod from deviating from the structural center due to insufficient constraint and causing wear. Under the premise of controlling costs, it meets the actual needs of the EMU. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of the spring guide device according to an embodiment of this application; Figure 2 Here are three views of the pin in the spring guide device according to an embodiment of this application; Figure 3 The following are three views of the spring guide rod in the spring guide device according to an embodiment of this application; Figure 4 These are three views of the spring fixing seat in the spring guide device according to an embodiment of this application; In the picture: 1. Pin; 10. Mounting groove; 2. Spring guide rod; 20. Mounting through hole; 3. Spring; 4. Spring fixing seat; 40. Fixing seat base plate; 41. Fixing seat through hole; 42. Annular wall. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0015] This application provides a spring guiding device that limits the radial displacement of the spring by means of a spring fixing seat and fixes the spring fixing seat to the pin shaft, effectively preventing the spring rod from deviating from the structural center due to insufficient constraint and causing wear. Under the premise of controlling costs, it meets the actual needs of EMU trains.

[0016] To achieve the aforementioned technical effects, the overall concept of this application is as follows: A spring guide device, the device comprising: Pin 1, the surface of which is provided with a mounting groove 10; A spring guide rod 2 has a mounting through hole 20 at one end, a pin 1 is inserted into the mounting through hole 20, and the two ends of the mounting groove 10 along the length direction of the pin 1 are located outside the mounting through hole 20. The central axis of the mounting groove 10 coincides with the central axis of the spring guide rod 2. A retractable spring 3 is sleeved on the spring guide rod 2; Spring fixing seat 4, the spring fixing seat 4 includes: A base plate 40 is provided with a fixing seat through hole 41 at its center; The annular wall 42 is a cylindrical structure, one end of which is connected to the outer edge of the base plate 40 of the fixing seat to form a cylindrical structure. The through hole 41 of the fixing seat is concentric with the annular wall 42. The through hole 40 of the fixing seat is sleeved on the spring guide rod 2 so that the spring fixing seat 4 can move axially along the spring guide rod 2; The base plate 40 of the spring fixing seat 4 facing the mounting through hole 20 is fixedly connected to the area of ​​the mounting groove 10 located outside the mounting through hole 20. The end of the spring 3 facing the mounting through hole 20 is installed inside the annular wall 42; wherein... The spring 3 and the pin 1 are located on both sides of the spring fixing seat 4.

[0017] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0018] See Figures 1-4 As shown, this application embodiment provides a spring guide device, which includes: Pin 1, the surface of which is provided with a mounting groove 10; A spring guide rod 2 has a mounting through hole 20 at one end, a pin 1 is inserted into the mounting through hole 20, and the two ends of the mounting groove 10 along the length direction of the pin 1 are located outside the mounting through hole 20. The central axis of the mounting groove 10 coincides with the central axis of the spring guide rod 2. A retractable spring 3 is sleeved on the spring guide rod 2; Spring fixing seat 4, the spring fixing seat 4 includes: A base plate 40 is provided with a fixing seat through hole 41 at its center; The annular wall 42 is a cylindrical structure, one end of which is connected to the outer edge of the base plate 40 of the fixing seat to form a cylindrical structure. The through hole 41 of the fixing seat is concentric with the annular wall 42. The through hole 40 of the fixing seat is sleeved on the spring guide rod 2 so that the spring fixing seat 4 can move axially along the spring guide rod 2; The base plate 40 of the spring fixing seat 4 facing the mounting through hole 20 is fixedly connected to the area of ​​the mounting groove 10 located outside the mounting through hole 20. The end of the spring 3 facing the mounting through hole 20 is installed inside the annular wall 42; wherein... The spring 3 and the pin 1 are located on both sides of the spring fixing seat 4.

[0019] In this embodiment, the radial displacement of the spring is limited by the spring fixing seat, and the spring fixing seat is fixed to the pin shaft. This effectively avoids the spring rod from deviating from the structural center due to insufficient constraint, thus preventing wear. Under the premise of controlling costs, the actual needs of the EMU are met.

[0020] Furthermore, in the initial state, the free end of the spring guide rod 2 is located inside the spring 3.

[0021] Furthermore, the diameter of the through hole 41 of the fixing seat matches the outer diameter of the spring guide rod 2; The first installation gap between the inner edge of the through hole 41 of the fixing seat and the outer wall of the spring guide rod 2 is configured to allow the spring fixing seat 4 to move freely along the axial direction of the spring guide rod 2; The inner diameter of the annular wall 42 matches the outer diameter of the spring 3, and the second mounting gap between the annular wall 42 and the spring 3 is configured not to hinder the extension and retraction of the spring 3.

[0022] The first mounting gap and the second mounting gap are configured such that the spring guide rod 2 does not contact the spring 3.

[0023] Furthermore, one end of the spring 3 is fixed inside the spring fixing seat 4, and is fixed to the base plate 40 of the fixing seat or the inner wall of the annular wall 42.

[0024] It should be noted that, in specific implementation, the material strength of this application embodiment is set as follows: The material hardness of the spring fixing seat 4 is lower than that of the spring guide rod 2. The material strength of the spring retainer 4 must at least meet the requirement that it can restrain the radial displacement of the spring 3.

[0025] In summary, the technical advantages of the embodiments of this application are as follows: The radial displacement of the spring 3 is constrained by the spring fixing seat 4 to prevent the spring 3 from contacting the spring guide rod 2 during the movement, which would cause the spring guide rod 2 to wear. The spring fixing seat 4 is fixed together with the pin 1 to prevent the spring rod from deviating from the structural center due to insufficient constraint, thus avoiding wear. The spring fixing seat 4 is made of a material with a lower hardness than the spring guide rod 2. In unavoidable contact, the spring fixing seat 4 will wear down, thus avoiding wear on the spring guide rod 2. This prevents the spring rod from wearing down and breaking, which could cause the vacuum circuit breaker to fail to open properly.

[0026] To better implement the technical solution of this application, the following technical details may also be configured: There is no fixation between the spring 3 and the spring fixing seat 4. The spring fixing seat 4 radially constrains the spring 3 through the annular wall 41. One end of the spring 3 is fixed inside the spring fixing seat 4. The spring 3 can be fixed to the spring fixing seat 4 by adding a fixing structure or spring fixing device at the bottom of the spring fixing seat, thereby constraining one end of the spring 3 radially, axially and rotationally. The spring retainer 4 can move freely along the axial direction of the spring guide rod 2. Friction between the two can be reduced by adding lubricant.

[0027] Furthermore, the spring fixing seat 4 can move freely along the axial direction of the spring guide rod 2, and the friction between the two can be reduced by optimizing the material of the spring fixing seat 4. For example, a low-friction coefficient polytetrafluoroethylene material can be selected.

[0028] In addition, the spring fixing seat 4 can move freely along the axial direction of the spring guide rod 2. The wear resistance of the spring guide rod 2 can be improved by optimizing the material of the spring guide rod 2 or by optimizing its surface treatment.

[0029] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0030] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A spring guide device, characterized in that, The device includes: A pin (1) has a mounting groove (10) on its surface. A spring guide rod (2) is provided at one end of a mounting through hole (20). The pin (1) is inserted into the mounting through hole (20). The mounting groove (10) is located outside the mounting through hole (20) at both ends along the length direction of the pin (1). The central axis of the mounting groove (10) coincides with the central axis of the spring guide rod (2). A retractable spring (3) sleeved on the spring guide rod (2); Spring fixing seat (4), the spring fixing seat (4) includes: A base plate (40) is provided with a fixing seat through hole (41) at the center of the base plate (40). The ring wall (42) of the cylindrical structure is connected at one end to the outer edge of the base plate (40) of the fixed seat to form a cylindrical structure. The through hole (41) of the fixed seat is concentric with the ring wall (42). The through hole (41) of the fixed seat is sleeved on the spring guide rod (2) so that the spring fixed seat (4) can move axially along the spring guide rod (2); The base plate (40) of the spring fixing seat (4) facing the mounting through hole (20) is fixedly connected to the area of ​​the mounting groove (10) located outside the mounting through hole (20); The spring (3) is installed inside the annular wall (42) at one end facing the mounting through hole (20); wherein, The spring (3) and the pin (1) are located on both sides of the spring fixing seat (4).

2. The spring guide device as described in claim 1, characterized in that: In the initial state, the free end of the spring guide rod (2) is located inside the spring (3).

3. The spring guide device as described in claim 1, characterized in that: The diameter of the through hole (41) of the fixed seat matches the outer diameter of the spring guide rod (2); The first mounting gap between the inner edge of the through hole (41) of the fixing seat and the outer wall of the spring guide rod (2) is configured to allow the spring fixing seat (4) to move freely along the axial direction of the spring guide rod (2); The inner diameter of the annular wall (42) matches the outer diameter of the spring (3), and the second mounting gap between the annular wall (42) and the spring (3) is configured not to hinder the extension and retraction of the spring (3); The first mounting gap and the second mounting gap are configured such that the spring guide rod (2) does not contact the spring (3).

4. The spring guide device as described in claim 1, characterized in that: One end of the spring (3) is fixed inside the spring fixing seat (4) and is fixed to the base plate (40) of the fixing seat or the inner wall of the annular wall (42).

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