A kind of switch machine contact group six channel contact pressure test fixture

Abstract

The utility model provides a kind of six passageway contact point pressure test of switch machine contact group six clamps, including base, vertical installation on the column of base and the swing ring of being sleeved on column;The surface of swing ring is embedded with pressure sensor contact, and the inner surface of the swing ring is provided with perforation, the upper end of a conductive wire is inserted into the perforation and is electrically connected with pressure sensor contact;The lower end of the conductive wire is inserted into the hole groove provided on the bottom end baffle of swing ring, and then inserted into the wire slot provided on the base, and is electrically connected with circuit control panel fixed in the cavity of base;A column and a swing ring constitute a static point piece pressure touch pressure component, and three static point piece pressure touch pressure components are provided, which are distributed along the axis of base.The utility model can contact with at least six groups of static point pieces at a time, so that the positioning of multiple contact point pressure tests can be completed at the same time under single triggering, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit technology, specifically relating to a fixture for testing the pressure of a six-channel contact group of a switch machine. Background Technology

[0002] The primary measurement method used in the industry is the pointer-type mechanical force gauge. While this type of force gauge is portable and easy to use, it also has drawbacks such as requiring a high level of user proficiency, low accuracy, difficulty in reading, and a high failure rate. Particularly inconvenient is that this approach typically relies on a single-piece testing mode. Specifically, operators must perform pressure tests on each contact group inside the switch machine, piece by piece (a single stationary contact piece). A standard switch machine often contains up to 24 critical contacts, meaning that completing a full inspection of each piece of equipment requires repeating the independent testing process 24 times, making the testing process for a single piece of equipment extremely lengthy. Meanwhile, routine maintenance work on railway lines can only be carried out during "maintenance windows" between train runs. This window of time for maintenance work is extremely limited and precious, usually only a few hours, or even less. Under such tight time pressure, the contradiction between the highly tedious nature of the inspection task and the enormous time consumption becomes increasingly prominent. A significant amount of valuable maintenance window time is consumed by repetitive disassembly, assembly, and single-point testing, which not only increases the workload of workers but also greatly limits the number of devices that can be tested each day, affecting the efficiency of the overall maintenance plan and the level of system reliability.

[0003] Therefore, overcoming the technical limitations of existing single-point sequential testing and significantly improving the overall efficiency of contact stress testing has become a key issue that urgently needs to be addressed in field maintenance work. Its core objective is to significantly reduce the testing time for individual devices, thereby completing the testing tasks for more devices within a limited maintenance window, improving maintenance response speed, and reducing operational risks. Utility Model Content

[0004] The purpose of this invention is to improve the existing contact pressure tester by giving it a multi-point synchronous sensor array or adaptive fixture structure, enabling it to cover and measure the pressure values ​​of multiple contacts inside the switch machine at one time. This changes the existing operation mode, where the operator only needs to complete the installation and positioning operation once. Thus, under a single trigger, the positioning of multiple sets of contact pressure tests can be completed simultaneously, improving operation efficiency.

[0005] To achieve the above objectives, this utility model provides a fixture for testing the pressure of a six-channel contact group of a switch machine, characterized in that it includes a base, a column vertically mounted on the base, and a swing ring fitted on the column;

[0006] The surface of the swing ring is embedded with a pressure sensor contact piece, and the inner surface of the swing ring is provided with a through hole. The upper end of a conductive wire passes through the through hole and is electrically connected to the pressure sensor contact piece. The lower end of the conductive wire passes through a slot provided on the bottom end of the swing ring, passes through a wire slot provided on the base, and is electrically connected to a circuit control board fixed in the cavity of the base.

[0007] One of the columns and one of the swing rings constitute a stationary pressure contact element, and three such stationary pressure contact elements are provided and distributed along the axis of the base.

[0008] An axially extending limiting piece is provided on the aforementioned column to extend into the arc-shaped limiting groove opened on the inner ring sidewall of the swing ring, thereby limiting the swing angle range of the swing ring.

[0009] The aforementioned clamps are two in number; each base has an arc-shaped groove at each end, which extends outward and downward from the inner top of the end.

[0010] A pin hole is made at the inner corner of the end of each base.

[0011] A limiting clamping component includes: an arc-shaped limiting piece, a first vertical support piece and a second vertical support piece disposed opposite to each other, a connecting piece connecting the bottoms of the first vertical support piece and the second vertical support piece, a first tension adjusting piece connecting the upper end of the first vertical support piece and a second tension adjusting piece connecting the upper end of the second vertical support piece;

[0012] The top surface of the free end of the second tension adjustment piece is provided with an adjustment limit pin, which is used to insert into a plurality of adjustment holes opened on the first tension adjustment piece;

[0013] The lower ends of the first vertical support piece and the second vertical support piece are each provided with a horizontal connecting piece. Each end of the horizontal connecting piece has a limiting pin insertion hole, so that a limiting pin can pass through the limiting pin insertion hole and be inserted into the pin hole.

[0014] The advantages of this utility model are: by adopting a combination of columns and swing rings with the same size and shape as the existing moving contact points, it realizes the simulation of real contact between the moving contact points and the stationary contact points, and can achieve contact with at least six sets of stationary contact points at one time. It can cover and measure the pressure values ​​of multiple contacts inside the switch machine at one time, changing the existing operation mode, that is, the operator only needs to complete the installation and positioning operation once. Thus, under a single trigger, the positioning of multiple sets of contact pressure tests can be completed simultaneously, improving the operation efficiency. Attached Figure Description

[0015] Figure 1This is a partial sectional view of a single static pressure contact element on the side of a fixture used for pressure testing of the six-channel contact group of a switch machine.

[0016] Figure 2 This is a schematic diagram of the limit plate setting.

[0017] Figure 3 This is a top view showing two clamps connected side by side.

[0018] Figure 4 Schematic diagram of the fixture end structure.

[0019] Figure 5 This is a schematic diagram of the limiting clamping component.

[0020] Figure 6 This is a schematic diagram of the ends of two clamps connected together by a limiting clamping component. Detailed Implementation

[0021] This embodiment provides a Figure 1 The fixture shown is for testing the pressure of six-channel contacts of a switch machine contact group. It includes a base 1, a column 2 vertically mounted on the base 1, and a swing ring 3 fitted on the column 2. It should be noted that the parameters of the column 2 and the swing ring 3 are based on the parameters of the moving contact. This can effectively simulate the real contact pressure between the moving contact ring and the corresponding set of stationary contact plates.

[0022] See you later Figure 1 As can be seen, a pressure sensor contact 4 is embedded on the surface of the swing ring 3, and a through hole is opened on the inner surface of the swing ring 3. The upper end of a conductive wire 5 passes through the through hole and is electrically connected to the pressure sensor contact 4. The lower end of the conductive wire 5 passes through the slot on the bottom end of the swing ring 3, passes through the wire slot on the base 1, and is electrically connected to the circuit control board 6 fixed in the cavity of the base 1. In this way, a column 2 and a swing ring 3 constitute a static pressure contact element. There are three static pressure contact elements, which are distributed along the axis of the base 1. This distribution is also a simulation of the moving contact setting, which is convenient for operation, especially for simulating a real moving contact. Therefore, its mechanical layout refers to the design of the moving contact.

[0023] See Figure 2 An axially extending limiting piece 8 is provided on the column 2 to extend into the arc-shaped limiting groove 9 opened on the inner ring side wall of the swing ring 3, thereby limiting the swing angle range of the swing ring 3. This is mainly for the protection of the conductive wire 5 and to prevent it from being damaged due to excessive twisting.

[0024] To enable simultaneous testing of more stationary contact pieces, this embodiment provides... Figure 3As shown, the two fixtures of the aforementioned embodiments are connected side by side to perform a test operation on multiple sets of stationary contact pieces, that is, to drive the column 2 and the swing ring 3 into the corresponding set of stationary contact pieces, simulating the state of the moving contact ring being driven in; based on this, each base 1 of each fixture has a [missing information - likely a number] at both ends. Figure 4 The arc-shaped groove 10 shown extends outward and downward from the inner top of the end; a pin hole 11 is opened at the inner corner of the end of each base 1.

[0025] Figure 5 The diagram shows a limiting clamping component, comprising: an arc-shaped limiting piece 12; a first vertical support piece 13 and a second vertical support piece 14 disposed opposite to each other; a connecting piece 15 connecting the bottoms of the first vertical support piece 13 and the second vertical support piece 14; a first tension adjusting piece 16 connected to the upper end of the first vertical support piece 13; and a second tension adjusting piece 17 connected to the upper end of the second vertical support piece 14. An adjusting limiting pin 18 is provided on the top surface of the free end of the second tension adjusting piece 17 for insertion into a plurality of adjusting holes 19 formed on the first tension adjusting piece 16. A transverse connecting piece 20 is provided at the lower end of each of the first vertical support piece 13 and the second vertical support piece 14. Each end of the transverse connecting piece 20 has a limiting pin insertion hole 21 for a limiting pin to pass through the limiting pin insertion hole 21 and then insert into a pin hole 11.

[0026] Figure 6 The diagram shows the end of two clamps connected together by a limiting clamp. Each clamp rotates outward on the arc-shaped limiting piece 12 with the corresponding pin hole as the rotation axis. In this way, the column 2 and the swing ring 3 are driven into a set of stationary contact pieces to be tested, thereby transmitting the pressure of the stationary contact pieces to the circuit control board 6 through the pressure sensor contact piece 4 on them.

[0027] In summary, it is easy to see that the fixture for pressure testing of six-channel switch contact groups provided by this utility model can simultaneously perform pressure testing on at least three sets of stationary contact pieces (simulating the moving contact ring being driven into a set of stationary contact pieces), thereby greatly improving operational efficiency.

Claims

1. A fixture for testing the pressure of a six-channel contact assembly of a switch machine, characterized in that, Includes a base (1), a column (2) vertically mounted on the base (1), and a swing ring (3) fitted on the column (2); The surface of the swing ring (3) is embedded with a pressure sensor contact (4), and a through hole is opened on the inner surface of the swing ring (3). The upper end of a conductive wire (5) passes through the through hole and is electrically connected to the pressure sensor contact (4). The lower end of the conductive wire (5) passes through the slot on the bottom end of the swing ring (3), passes through the slot on the base (1), and is electrically connected to the circuit control board (6) fixed in the cavity of the base (1). The column (2) and the swing ring (3) constitute a static pressure contact element. There are three static pressure contact elements, which are distributed along the axis of the base (1).

2. The fixture for testing the pressure of six-channel contacts of a switch machine contact group according to claim 1, characterized in that: An axially extending limiting piece (8) is provided on the column (2) to extend into the arc-shaped limiting groove (9) opened on the inner ring sidewall of the swing ring (3) to limit the swing angle range of the swing ring (3).

3. The fixture for testing the pressure of six-channel contacts of a switch machine contact group according to claim 1 or 2, characterized in that, The clamps are two in number; each base (1) has an arc-shaped groove (10) at each end, which extends outward and downward from the inner top of the end; A pin hole (11) is opened at the inner corner of the end of each base (1). A limiting clamping component includes: an arc-shaped limiting piece (12), a first vertical support piece (13) and a second vertical support piece (14) disposed opposite to each other, a connecting piece (15) connecting the bottoms of the first vertical support piece (13) and the second vertical support piece (14), a first tension adjusting piece (16) connected to the upper end of the first vertical support piece (13) and a second tension adjusting piece (17) connected to the upper end of the second vertical support piece (14); The top surface of the free end of the second tension adjustment piece (17) is provided with an adjustment limit pin (18) for insertion into a plurality of adjustment holes (19) opened on the first tension adjustment piece (16); A horizontal connecting piece (20) is provided at the lower end of the first vertical support piece (13) and the second vertical support piece (14). A limiting pin insertion hole (21) is opened at both ends of the horizontal connecting piece (20) so that a limiting pin can be inserted into the pin hole (11) after passing through the limiting pin insertion hole (21).

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