Contact group for point switch

Abstract

The utility model discloses a contact group for a point switch, which relates to the technical field of railway turnout point switches and is technically characterized by comprising a static contact seat, a movable contact seat and a connecting seat, a plurality of binding posts are mounted on the static contact seat, the connecting seat is arranged inside the static contact seat, and the movable contact seat is arranged on the connecting seat. A connecting seat is fixedly mounted on each binding post; one end of the contact sheet is in sliding connection with the connecting seat, and the other end of the contact sheet is provided with a first guide surface; and one end of the spring is fixedly connected with the connecting seat, and the other end of the spring is fixedly connected with the contact piece, so that the contact piece can be pressed on the movable contact column even if the elastic acting force of the spring is reduced after long-time use, and the connection between the contact piece and the movable contact column can be more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of railway turnout switch machines, in particular to a contact group for switch machines. Background Art

[0002] In railway transportation, trains run on tracks according to signals, constantly passing through turnouts or switching lines after turnouts; the signal of the direction of the switching opening is realized by the action of the static contact group on the turnout electric switch machine and the movable contact group matched with it and the indicating rod and other components. The movable and static contact system mainly includes a movable contact group connected to the movable contact bracket in the switch machine, a static contact fixedly mounted on the contact seat, and a dust-proof arc-extinguishing cover covering the movable and static contacts; when the turnout is switched, the movable contact bracket in the switch machine will drive the movable contact group to contact with the static contact assembly, thereby realizing the signal transmission of the electrical equipment.

[0003] In the electric switch traction turnout conversion project, the switch machine uses a moving contact bracket to quickly insert and remove the moving contact group from the static contact group; when the moving contact ring is driven into the contact position, the contact piece is stretched open, and the elasticity of the contact piece itself ensures reliable contact between the contact piece and the moving contact ring. After a certain period of use, the elasticity of the contact piece decreases, and poor contact will frequently occur, resulting in false connection or open circuit. Therefore, in order to solve the above technical problems, the utility model provides a contact group for a switch machine. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a contact group for a switch machine, which can make the connection between a contact piece and a movable contact column more reliable.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solution: a contact group for a switch machine, comprising a static contact seat and a dynamic contact seat, wherein a plurality of terminal posts are installed on the static contact seat, and further comprising:

[0008] A connecting seat, which is arranged inside the static contact seat, and each of the connecting posts is fixedly mounted with a connecting seat;

[0009] A contact piece, one end of which is slidably connected to the connection seat, and the other end of the contact piece is provided with a first guide surface;

[0010] One end of the spring is fixedly connected to the connecting seat, and the other end is fixedly connected to the contact piece.

[0011] Preferably, a plurality of insulating partitions are fixedly installed inside the static contact seat.

[0012] Preferably, an active cavity is opened on one end of the connecting seat, a sliding rod is fixedly installed in the active cavity, and one end of the sliding rod passes through the interior of the contact piece and is slidably connected to the contact piece.

[0013] Preferably, a plurality of moving contact posts are fixedly mounted on the moving contact seat, a contact block is fixedly mounted on the outer surface of the moving contact post, and the left and right side surfaces of the contact block are contact planes.

[0014] Preferably, an elastic sheet is fixedly mounted on one side surface of the contact sheet, and a second guide surface is arranged on the end of the elastic sheet.

[0015] Preferably, the front and rear side surfaces of the contact block are configured as arc surfaces.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a contact group for a switch machine, which has the following beneficial effects:

[0018] A connecting seat is fixedly installed on each terminal post, one end of the contact piece is slidably connected to the connecting seat, a spring is fixedly arranged between the contact piece and the connecting seat, and a first guide surface is fixedly installed on the other end of the contact piece. The spring is used to press the contact piece onto the surface of the moving contact post. After long-term use, even if the elastic force of the spring is reduced, the contact piece can still be pressed onto the moving contact post, so that the connection between the contact piece and the moving contact post can be made more reliable.

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure inside the static contact seat in the utility model;

[0023] Figure 3 It is a schematic diagram of the split structure of the connecting seat and the contact piece in the utility model;

[0024] Figure 4It is a structural schematic diagram of the movable contact seat in the utility model.

[0025] In the figure: 1. static contact seat; 2. moving contact seat; 3. terminal; 4. contact piece; 5. moving contact post; 6. arc surface; 7. contact plane; 8. elastic sheet; 9. connecting seat; 10. insulating partition; 11. movable cavity; 12. sliding rod; 13. spring; 14. first guide surface; 15. second guide surface; 16. contact block. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-4 The principles and features of the present invention are described, and the examples are only used to explain the present invention, and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0027] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] Embodiment 1:

[0030] Please combine Figures 1 to 4As shown, the utility model provides a contact group for a switch machine, which includes a static contact seat 1 and a dynamic contact seat 2, a plurality of dynamic contact posts 5 are fixedly mounted on the dynamic contact seat 2, a plurality of terminal posts 3 are mounted on the static contact seat 1, a connecting seat 9 is fixedly mounted on each terminal post 3, and the connecting seat 9 is arranged in the internal cavity of the static contact seat 1, an active cavity 11 is opened on one end of the connecting seat 9, a slide bar 12 is fixedly mounted inside the active cavity 11, one end of a contact piece 4 is slidably connected to the slide bar 12, a spring 13 is fixedly arranged between the contact piece 4 and the inner surface of the connecting seat 9, a first guide surface 14 is fixedly mounted on the other end of the contact piece 4, and the switch machine rotates the dynamic contact seat 2 through the dynamic contact bracket, so that the dynamic contact post 5 can be continuously inserted and pulled out between the two contact pieces 4, and when the dynamic contact post 5 is inserted between the two contact pieces 4, it will contact the first guide surface 14. The surfaces 14 are in contact with each other, and the two contact pieces 4 are stretched apart. When the two contact pieces 4 move away from each other, the spring 13 will be squeezed to shrink. Then, when the contact piece 4 contacts the moving contact post 5, the contact piece 4 does not need to be deformed, so as to avoid deformation of the contact piece 4 due to long-term deformation, which may cause failure to normally contact with the moving contact post 5 and affect the normal use of the contact group. The spring 13 is used to press the contact piece 4 onto the surface of the moving contact post 5. Even after long-term use, even if the elastic force of the spring 13 is reduced, the contact piece 4 can be pressed onto the moving contact post 5, so that the connection between the contact piece 4 and the moving contact post 5 can be made more reliable. A plurality of insulating partitions 10 are fixedly installed inside the static contact seat 1. The plurality of insulating partitions 10 separate all the terminals 3, so that each terminal 3 is in an independent space, so as to avoid influence between the plurality of terminals 3 after connection.

[0031] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working method, as described below for details.

[0032] Embodiment 2:

[0033] An elastic sheet 8 is fixedly installed on one side surface of the contact sheet 4, and a second guide surface 15 is arranged on the end of the elastic sheet 8. A contact block 16 is fixedly installed on the outer surface of the moving contact column 5. The left and right side surfaces of the contact block 16 are contact planes 7. By utilizing the two contact planes 7 to contact the plane on the elastic sheet 8 and adopting a surface-to-surface contact method, the amount of current passing through can be increased and it is helpful to prevent the occurrence of virtual connection and short circuit. The elastic sheet 8 itself has a certain elastic force, which can further ensure reliable contact with the contact plane 7. The front and rear side surfaces of the contact block 16 are set as arc surfaces 6. During the process of inserting the contact block 16 between the two elastic sheets 8, the arc surface 6 is squeezed and contacted with the first guide surface 14 and the second guide surface 15 to open the two contact sheets 4.

[0034] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A contact assembly for a switch machine, comprising a static contact seat (1) and a movable contact seat (2), wherein a plurality of terminal posts (3) are mounted on the static contact seat (1), characterized in that: Also includes: A connecting seat (9), the connecting seat (9) being arranged inside the static contact seat (1), and each of the connecting posts (3) being fixedly mounted with a connecting seat (9); A contact piece (4), one end of which is slidably connected to the connection seat (9), and a first guide surface (14) is provided on the other end of the contact piece (4); The spring (13) has one end fixedly connected to the connection seat (9) and the other end fixedly connected to the contact piece (4).

2. A contact assembly for a switch machine according to claim 1, characterized in that: A plurality of insulating partitions (10) are fixedly mounted inside the static contact seat (1).

3. A contact assembly for a switch machine according to claim 1, characterized in that: An active cavity (11) is provided on one end of the connection seat (9), a sliding rod (12) is fixedly installed in the active cavity (11), and one end of the sliding rod (12) passes through the interior of the contact piece (4) and is slidably connected to the contact piece (4).

4. A contact assembly for a switch machine according to claim 1, characterized in that: A plurality of moving contact posts (5) are fixedly mounted on the moving contact seat (2), a contact block (16) is fixedly mounted on the outer surface of the moving contact post (5), and the left and right side surfaces of the contact block (16) are contact planes (7).

5. A contact assembly for a switch machine according to claim 4, characterized in that: An elastic sheet (8) is fixedly mounted on one side surface of the contact sheet (4), and a second guide surface (15) is provided on the end of the elastic sheet (8).

6. A contact assembly for a switch machine according to claim 5, characterized in that: The front and rear side surfaces of the contact block (16) are configured as arc surfaces (6).

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