Movable contact linkage spring member for railway switch machine

Abstract

The embodiment of the application relates to the technical field of railway turnout operating equipment, and particularly relates to a movable contact linkage spring component suitable for a railway switch machine. The movable contact linkage spring component is used to drive linkage of two movable contact groups, so that when one movable contact group swings, the other movable contact group can swing correspondingly in the same direction. The movable contact linkage spring component comprises a connecting rod, a compression spring and a guide piece. The connecting rod is rotatably connected with a movable contact frame of one movable contact group. The compression spring is sleeved on the connecting rod. The guide piece is rotatably connected with a movable contact frame of the other movable contact group. The guide piece forms a guide cavity, a part of a rod segment of the connecting rod enters the guide cavity and is arranged to be movable along an axial direction of the guide cavity and swingable in a radial direction of the guide cavity, and the compression spring is sleeved on the rod segment of the connecting rod located in the guide cavity. Compared with a structure using a pull spring alone, the movable contact linkage spring component of the embodiment of the application can improve the reliability of the railway switch machine.

Description

Technical Field

[0001] The embodiments of this application relate to the field of railway turnout operating equipment technology, and more specifically to a moving contact linkage compression spring component suitable for railway switch machines. Background Technology

[0002] This section is only intended to provide background information relevant to this application and does not necessarily constitute prior art.

[0003] A railway switch machine is the actuator of a railway turnout control system, used for the switching, locking, and position indication of turnouts. The long-term use and stability of railway switch machines are crucial. The design of railway switch machines requires that when one moving contact group swings, the other moving contact group should swing accordingly; that is, the two moving contact groups should be linked.

[0004] In related technologies, railway switch machines suffer from poor reliability. The inventors of this application have discovered that railway switch machines in related technologies typically use tension springs to achieve linkage between two moving contact groups. Specifically, the two ends of the tension spring are directly connected to the moving contact frames of the two moving contact groups. The inventors of this application have found that the existing method of using tension springs to achieve linkage between two moving contact groups requires frequent inspection and replacement of the tension springs, resulting in poor reliability. Utility Model Content

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] This utility model provides a moving contact linkage spring component suitable for railway switch machines, used to drive two moving contact groups to move in tandem, so that when one moving contact group swings, the other moving contact group can swing in the same direction accordingly. The moving contact linkage spring component may include: a connecting rod, a compression spring, and a guide member. The connecting rod is rotatably connected to the moving contact frame of one moving contact group. The compression spring is sleeved on the connecting rod. The guide member is rotatably connected to the moving contact frame of the other moving contact group. The guide member forms a guide cavity, a portion of the connecting rod enters the guide cavity and is configured to move axially along the guide cavity and swing radially toward the guide cavity, and the compression spring is sleeved on the connecting rod portion located within the guide cavity.

[0007] Furthermore, the length of the connecting rod can be equal to or greater than the length of the compression spring in its natural state, and the length of the compression spring in its natural state can be greater than the length of the guide cavity, so that the compression spring is always kept in a compressed state in the guide cavity.

[0008] Furthermore, the connecting rod can be configured such that when the two moving contact groups swing to their positions, a first preset interval is formed between the compression spring and the connecting rod and the axial direction of the guide cavity; when one moving contact group swings to its position and the other moving contact group is about to swing, a second preset interval is formed between the compression spring and the connecting rod and the axial direction of the guide cavity, wherein the first preset interval is smaller than the second preset interval.

[0009] Furthermore, the guide can be a cylindrical component that forms a guide cavity. The circumferential wall of the cylindrical component forms an opening that communicates with the guide cavity, allowing the connecting rod and the compression spring to swing out of the guide cavity in the direction of the opening.

[0010] Furthermore, the cross-section of the guide cavity corresponding to the opening can be semi-circular.

[0011] Furthermore, the opening can be set to face downwards.

[0012] Furthermore, the moving contact linkage spring component may also include a limiting member. The limiting member is disposed on the connecting rod and is used to prevent the spring from disengaging from the end of the connecting rod.

[0013] Furthermore, the limiting component can be a circular plate-shaped structure, which is coaxial with the connecting rod.

[0014] Furthermore, a first indicator and a second indicator can be formed at the periphery of the opening of the cylindrical component; under normal conditions, when the two moving contact groups swing into place, the limiting member aligns with the first indicator; when one moving contact group swings into place and the other moving contact group is about to start swinging, the limiting member aligns with the second indicator.

[0015] Compared to a structure that uses only a tension spring, the moving contact linkage spring component in the embodiments of this application is configured to include a connecting rod, a guide member, and a compression spring, which can improve the reliability and service life of the moving contact linkage spring component, thereby improving the reliability and service life of the railway switch machine.

[0016] These and other advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0017] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0018] Figure 1 This is a schematic diagram of the structure of a railway switch machine according to an embodiment of this application;

[0019] Figure 2 This is a front view of a railway switch machine according to an embodiment of this application when the two moving contact groups are swung into position;

[0020] Figure 3 This is a front view of a railway switch machine according to an embodiment of this application when one moving contact group has swung into position and the other moving contact group is about to swing.

[0021] Figure 4 This is a structural schematic diagram of the moving contact linkage compression spring component according to an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the structure of the moving contact linkage spring component according to an embodiment of this application when the two moving contact groups swing into place;

[0023] Figure 6 This is a schematic diagram of the moving contact linkage spring component according to an embodiment of this application, when one moving contact group swings to its position and the other moving contact group is about to swing.

[0024] It should be noted that the accompanying drawings are not drawn to scale, and for illustrative purposes, elements with similar structures or functions are generally represented by similar reference numerals throughout the drawings. It should also be noted that the drawings are for the purpose of describing preferred embodiments only, and not of the application itself. The drawings do not show every aspect of the described embodiments and do not limit the scope of the application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Railway switch machine;

[0027] 10. Moving contact linkage spring component;

[0028] 110. Connecting rod; 111. First connecting part; 1111. First connecting hole;

[0029] 120. Compression spring;

[0030] 130. Guide component; 131. Second connecting part; 1311. Second connecting hole; 132. Guide cavity; 133. Opening; 134. First preset interval; 135. Second preset interval; 136. First indicator; 137. Second indicator;

[0031] 140. Limiting components;

[0032] 20. Moving contact group;

[0033] 210. Moving contact frame; 211. Connecting and mating part; 2111. Mounting part; 212. Rotating shaft; 213. Contact connection part;

[0034] 30. Connecting shaft;

[0035] 40. Contact frame. Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0037] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0038] The following disclosure provides several different implementations or examples for carrying out this application. To simplify the disclosure of this application, the components and methods of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0039] This application provides a moving contact linkage compression spring component for a railway switch machine. Figure 1 This is a schematic diagram of a railway switch machine according to an embodiment of this application. Figure 4 This is a schematic diagram of a moving contact linkage compression spring component according to an embodiment of this application. Figure 1 and Figure 4 As shown, the moving contact linkage spring component 10 of the railway switch machine 1 is used to drive two moving contact groups 20 to move together, so that when one moving contact group 20 swings, the other moving contact group 20 can swing in the same direction accordingly. The moving contact group 20 includes a moving contact frame 210 and moving contacts disposed on the moving contact frame 210.

[0040] The moving contact linkage spring component 10 includes a connecting rod 110, a compression spring 120, and a guide member 130. The connecting rod 110 is rotatably connected to the moving contact frame 210 of one moving contact group 20. The compression spring 120 is sleeved on the connecting rod 110. The guide member 130 is rotatably connected to the moving contact frame 210 of another moving contact group 20. The guide member 130 forms a guide cavity 132, a portion of the connecting rod 110 enters the guide cavity 132 and is configured to move axially along the guide cavity 132 and swing radially toward the guide cavity 132. The compression spring 120 is sleeved on the portion of the connecting rod 110 located within the guide cavity 132.

[0041] In the embodiments of this application, a compression spring 120 is sleeved on the rod segment of the connecting rod 110 located in the guide cavity 132. The connecting rod 110 and the guide member 130 are rotatably connected to the moving contact frame 210 of different moving contact groups 20, respectively. When one of the moving contact groups 20 swings, the interaction of the compression spring 120, the connecting rod 110, and the guide member 130 drives the other moving contact group 20 to swing in the same direction accordingly, thereby realizing the linkage of the two moving contact groups 20.

[0042] Compared to a structure that uses a tension spring alone, the moving contact linkage spring component 10 of the embodiments of this application is configured to include a connecting rod 110, a guide 130 and a compression spring 120, which can improve the reliability and service life of the moving contact linkage spring component 10, thereby improving the reliability and service life of the railway switch machine 1.

[0043] In some embodiments, the connecting rod 110 is provided with a first connecting portion 111, the guide member 130 is provided with a second connecting portion 131, and each movable contact frame 210 includes a connecting mating portion 211. The first connecting portion 111 and the second connecting portion 131 are rotatably connected to the corresponding connecting mating portion 211.

[0044] Specifically, the first connecting part 111 and the second connecting part 131 respectively include a first connecting hole 1111 and a second connecting hole 1311; the connecting mating part 211 includes two mounting members 2111 spaced apart, each mounting member 2111 having a mounting hole; the first connecting part 111 is inserted between the two mounting members 2111 of the connecting mating part 211, the first connecting hole 1111 is aligned with the two mounting holes, and the connecting shaft 30 passing through the first connecting hole 1111 and the two mounting holes realizes the rotational connection between the connecting rod 110 and a corresponding movable contact frame 210.

[0045] The second connecting part 131 is inserted between the two mounting parts 2111 of another connecting mating part 211. The second connecting hole 1311 is aligned with the two mounting holes. The guide 130 is rotatably connected to a corresponding moving contact frame 210 by the connecting shaft 30 passing through the second connecting hole 1311 and the two mounting holes.

[0046] In some embodiments, the movable contact frame 210 is rotatably connected to the contact frame 40 of the railway switch machine 1.

[0047] In some embodiments, the moving contact frame 210 includes a rotating shaft 212 and a contact connection portion 213 connected to the rotating shaft 212, the contact connection portion 213 being used to connect the moving contact.

[0048] The rotating shaft 212 is rotatably connected to the contact frame 40 of the railway switch machine 1, thereby driving the contact connection part 213 and the moving contact to swing.

[0049] The connecting part 211 is provided in the contact connection part 213. When one moving contact group 20 swings, it moves relative to the connecting rod 110 and the compression spring 120 through the guide member 130, which drives the other moving contact group 20 to swing.

[0050] The inventors of this application discovered that when a moving contact assembly 20 swings, a small angle, less than 5°, is formed between the guide member 130 and the connecting rod 110, for example, 2-3°. The connecting rod 110 then drives the compression spring 120 to swing slightly up and down within the guide cavity 132. In some cases, the connecting rod 110 drives the compression spring 120 to swing up and down within the guide cavity 132 with a larger amplitude, which may cause collision and interference with the contact frame 40.

[0051] In response to the above problems, such as Figure 1 and Figure 4 As shown, in some embodiments, the length of the connecting rod 110 is equal to or greater than the length of the compression spring 120 in its natural state, and the length of the compression spring 120 in its natural state is greater than the length of the guide cavity 132, so that the compression spring 120 is always kept in a compressed state within the guide cavity 132. This arrangement allows the compression spring 120 to always have axial pressure, reducing the amplitude of radial relative oscillation between the connecting rod 110 and the guide member 130.

[0052] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, Figure 2 This is a front view of the railway switch machine 1 according to an embodiment of this application when the two moving contact groups 20 are swung into position; Figure 3 This is a front view of a railway switch machine 1 according to an embodiment of this application when one moving contact group 20 has swung into place and the other moving contact group 20 is about to swing. Figure 5 This is a schematic diagram of the structure of the moving contact linkage spring member 10 according to an embodiment of this application when the two moving contact groups 20 swing into position; Figure 6This is a schematic diagram of the moving contact linkage spring member 10 according to an embodiment of this application when one moving contact group 20 swings to its position and the other moving contact group 20 is about to swing. In some embodiments, the connecting rod 110 is configured such that: when both moving contact groups 20 swing to their positions, a first preset interval 134 is formed between the spring 120 and the connecting rod 110 and the axial direction of the guide cavity 132; when one moving contact group 20 swings to its position and the other moving contact group 20 is about to swing, a second preset interval 135 is formed between the spring 120 and the connecting rod 110 and the axial direction of the guide cavity 132, wherein the first preset interval 134 is smaller than the second preset interval 135. By setting the first preset interval 134, the length of the rod segment of the connecting rod 110 located in the guide cavity 132 is shortened, so that the compression spring 120 is compressed and has a certain pressure along the axial direction, thereby reducing the amplitude of the radial relative swing between the connecting rod 110 and the guide member 130. This can prevent the connecting rod 110 from driving the compression spring 120 to swing downward and collide with the contact frame 40 due to the excessive relative swing amplitude between the connecting rod 110 and the guide member 130.

[0053] like Figure 2 and Figure 5 As shown, specifically, when the two moving contact groups 20 swing into place, a first preset interval 134 is formed between the compression spring 120 and the connecting rod 110 and the axial direction of the guide cavity 132, at which time the overall length of the connecting rod 110 and the guide member 130 is at its minimum.

[0054] like Figure 3 and Figure 6 As shown, specifically, when one moving contact group 20 swings to its position and the other moving contact group 20 is about to swing, a second preset interval 135 is formed between the compression spring 120 and the connecting rod 110 and the axial direction of the guide cavity 132. At this time, the overall length of the connecting rod 110 and the guide member 130 is at its maximum.

[0055] like Figure 1 and Figure 4 As shown, in some embodiments, the guide member 130 is a cylindrical member, forming a guide cavity 132. The circumferential wall of the cylindrical member forms an opening 133 communicating with the guide cavity 132, allowing the connecting rod 110 and the compression spring 120 to swing towards the opening 133 to the outside of the guide cavity 132. The opening 133 eliminates the limitation on the swing amplitude of the connecting rod 110 and the compression spring 120. When the swing amplitude of the connecting rod 110 and the compression spring 120 is large, it can prevent the connecting rod 110 and the compression spring 120 from colliding with the cylindrical wall, preventing damage to the compression spring 120 and the connecting rod 110, thus ensuring the smooth operation of the moving contact assembly 20.

[0056] like Figure 4 As shown, in some embodiments, the cross-section of the guide cavity 132 at the opening 133 is semi-circular.

[0057] like Figure 2 As shown, in some embodiments, the opening 133 formed by the circumferential wall of the cylinder is arranged downwards. This arrangement can prevent other parts from falling into the guide cavity 132 and affecting the movement of the compression spring 120 in the guide cavity 132, thus causing a malfunction of the railway switch machine 1.

[0058] like Figure 4 As shown, in some embodiments, the moving contact linkage spring member 10 may further include a limiting member 140. The limiting member 140 is disposed on the connecting rod 110 and is used to limit the spring 120 from disengaging from the end of the connecting rod 110.

[0059] like Figure 4 As shown, in some embodiments, the limiting member 140 is a circular plate-shaped structure, which is coaxial with the connecting rod 110. Specifically, when the cross-section of the guide cavity 132 is semi-circular, the circular plate-shaped structure of the limiting member 140 facilitates the smooth return of the limiting member 140, the connecting rod 110, and the compression spring 120 to the guide cavity 132 after the connecting rod 110 drives the limiting member 140 to swing downward.

[0060] like Figure 2 and Figure 3 As shown, in some embodiments, a first indicator 136 and a second indicator 137 are formed at the periphery of the opening 133. Under normal conditions, when the two moving contact groups 20 swing into place, the limiting member 140 aligns with the first indicator 136; when one moving contact group 20 swings into place and the other moving contact group 20 is about to start swinging, the limiting member 140 aligns with the second indicator 137. The correspondence between the first indicator 136, the second indicator 137, and the swinging status of the two moving contact groups 20 can serve as a basis for on-site maintenance personnel to determine whether the compression spring 120 has aged and been damaged. For example, if the limiting member 140 is not aligned with the first indicator 136 when the two moving contact groups 20 swing into place, it means that the compression spring 120 has a problem and needs maintenance. This arrangement provides a simple and clear method for determining whether the compression spring 120 has aged and been damaged, helping on-site maintenance personnel to quickly detect the condition of the compression spring 120.

[0061] Based on the moving contact linkage spring member 10 of any of the above embodiments, this application also provides a railway switch machine 1. For example... Figure 1As shown, the railway switch machine 1 includes two moving contact groups 20 and a moving contact linkage spring member 10. The moving contact linkage spring member 10 drives the two moving contact groups 20 to move in tandem, so that when one moving contact group 20 swings, the other moving contact group 20 swings in the same direction accordingly. Compared to railway switch machines that use only a tension spring, the structure of the moving contact linkage spring member 10 in the railway switch machine 1 of this application improves the reliability and service life of the moving contact linkage spring member 10, thereby improving the reliability and service life of the railway switch machine 1.

[0062] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0063] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A moving contact linkage spring component suitable for railway switch machines, used to drive two moving contact groups to move together, so that when one of the moving contact groups swings, the other moving contact group can swing in the same direction accordingly, characterized in that, The moving contact linkage spring component includes: A connecting rod, wherein the connecting rod is rotatably connected to a movable contact frame of one of the movable contact groups; Compression spring, sleeved on the connecting rod; A guide member, which is rotatably connected to the movable contact frame of another of the movable contact groups; The guide member forms a guide cavity, a portion of the connecting rod enters the guide cavity and is configured to move axially along the guide cavity and swing radially toward the guide cavity, and the compression spring is sleeved on the connecting rod portion located in the guide cavity.

2. The moving contact linkage compression spring component according to claim 1, characterized in that, The length of the connecting rod is equal to or greater than the length of the compression spring in its natural state, and the length of the compression spring in its natural state is greater than the length of the guide cavity, so that the compression spring is always kept in a compressed state within the guide cavity.

3. The moving contact linkage compression spring component according to claim 1, characterized in that, The connecting rod is configured such that when the two moving contact groups swing to their positions, a first preset interval is formed between the compression spring and the connecting rod and the axial direction of the guide cavity; when one moving contact group swings to its position and the other moving contact group is about to swing, a second preset interval is formed between the compression spring and the connecting rod and the axial direction of the guide cavity, wherein the first preset interval is smaller than the second preset interval.

4. The moving contact linkage compression spring component according to claim 1, characterized in that, The guide member is a cylindrical member that forms the guide cavity. The circumferential wall of the cylindrical member forms an opening that communicates with the guide cavity, allowing the connecting rod and the compression spring to swing toward the outside of the guide cavity in the direction of the opening.

5. The moving contact linkage compression spring component according to claim 4, characterized in that, The cross-section of the guide cavity corresponding to the opening is semi-circular.

6. The moving contact linkage compression spring component according to claim 4, characterized in that, The opening is positioned downwards.

7. The moving contact linkage compression spring component according to claim 4, characterized in that, Also includes: A limiting member is provided on the connecting rod to prevent the compression spring from dislodging from the end of the connecting rod.

8. The moving contact linkage compression spring component according to claim 7, characterized in that, The limiting member is a circular plate-shaped structure, and the circular plate-shaped structure is coaxial with the connecting rod.

9. The moving contact linkage compression spring component according to claim 7, characterized in that, The cylindrical component forms a first indicator and a second indicator at the periphery of the opening; Under normal conditions, when the two moving contact groups swing into place, the limiting member aligns with the first indicator; when one moving contact group swings into place and the other moving contact group is about to start swinging, the limiting member aligns with the second indicator.

Images