Horizontal linkage mechanism of point switch contact group

Abstract

The utility model discloses a horizontal linkage mechanism of a point switch contact group. The upper crank arm and the compensation crank arm are hinged to a main shaft and can swing synchronously, a main crank arm is hinged between one side of the upper end of the top of the Y-shaped arm and the upper portion of the upper crank arm, and a clearance compensation tension spring is hinged between the other side of the upper end of the top of the Y-shaped arm and the upper portion of the compensation crank arm. A Y-shaped arm tension spring nut is arranged on one side of the lower portion of the Y-shaped arm, and a main tension spring is connected to the Y-shaped arm tension spring nut. The utility model has the advantages that the purpose of eliminating the clearance of each transmission part is realized, the clearance can be effectively compensated through the compensation tension spring, the contact reliability of the contact is greatly improved, and the action accuracy of the contact group is ensured. Under the condition that the original linkage mode position and action mode are not changed, the reliability is higher, and the interchange problem of the oil-immersed contact assembly and the arrangement type contact assembly can be quickly completed; and the replacement and maintenance efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a transmission component of an automatic switch of a track signal control system, in particular to a horizontal linkage mechanism of a switch contact group. Background Art

[0002] At present, in the prior art, track switches usually adopt an arranged contact group. Such contact groups are generally open and modularly designed. Since they work in relatively harsh environments such as humidity and dust, the arranged contact groups need to be maintained regularly on the track. Later, oil-immersed maintenance-free contact groups appeared on the market. These contact groups adopt an integrated sealed oil-immersed design, thus well solving the above problems. Therefore, their applications are also increasing. However, when changing from an arranged contact group to an oil-immersed contact group, due to the inconsistent transmission angles of the two, the original linkage mechanism cannot be directly adapted.

[0003] In order to overcome the above installation problems, the existing conventional solution is to use a four-bar linkage mechanism for transmission transformation. However, its installation process is very troublesome and cannot be quickly replaced. In addition, the reliability in use after installation is also poor, and maintenance is very inconvenient. For example: in the utility model with the publication number CN220155386U and the name of an oil-immersed maintenance-free contact group of a close contact checker, a simple linkage mechanism is disclosed. On the one hand, its split structure design requires the whole to be disassembled when the contact group needs to be maintained, thus bringing the problem of inconvenient disassembly. On the other hand, although a linkage spring is designed, the linkage spring is hung on the upper side of the driven crank arm. This installation method, although to a certain extent improves the reliable contact force of the static contact group, the upper-mounted installation method also changes the original structure, not only changing its action mode and reducing the action reliability, but also having the problem of inconvenient disassembly. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a horizontal linkage mechanism of a switch contact group with a clever structural design, good reliability in use, and capable of quickly interchanging the horizontal contact group with the existing arranged contact group.

[0005] To solve the above technical problems, the horizontal linkage mechanism of the switch contact group of the utility model includes a Y-shaped arm, an upper crank arm and a compensation crank arm that are hinged on the main shaft and can swing synchronously. A main crank arm is hinged between the upper end of one side of the top of the Y-shaped arm and the upper part of the upper crank arm. A clearance compensation tension spring is hinged between the upper end of the other side of the top of the Y-shaped arm and the upper part of the compensation crank arm. A Y-shaped arm tension spring nut is arranged on one side of the lower part of the Y-shaped arm, and a main tension spring is connected to the Y-shaped arm tension spring nut.

[0006] A first threaded crank arm pin for connecting one end of a clearance compensation tension spring is installed on the Y-shaped arm, and a first stepped crank arm pin for connecting the other end of the clearance compensation tension spring is installed on the compensation crank arm.

[0007] A first clearance compensation tension spring nut is installed on the first threaded crank arm pin, and a second clearance compensation tension spring nut is installed on the first stepped crank arm pin; one end of the clearance compensation tension spring is connected to the first clearance compensation tension spring nut, and the other end of the clearance compensation tension spring is connected to the second clearance compensation tension spring nut.

[0008] A second threaded crank arm pin is installed between one end of the Y-shaped arm and the main crank arm, and a second stepped crank arm pin is installed between the other end of the main crank arm and the upper crank arm.

[0009] A first stop circlip is clamped on the first threaded crank arm pin.

[0010] The Y-shaped arm is formed on one side of the moving contact frame of the switch machine.

[0011] A second stop circlip is clamped on the second threaded crank arm pin.

[0012] Self-lubricating bushings are installed on the first threaded crank arm pin, the first stepped crank arm pin, the second threaded crank arm pin, and the second stepped crank arm pin.

[0013] The advantages of the present utility model are:

[0014] (1) A compensation tension spring is hinged between the upper end side of the top of the Y-shaped arm and the upper part of the compensation crank arm, thereby achieving the purpose of eliminating the clearances of various transmission components. Even if clearances are produced in the shaft hole fits of various components due to vibration, the clearances can be effectively compensated by the compensation tension spring, greatly improving the reliability of contact, and ensuring the accuracy of the operation of the contact group.

[0015] (2) A Y-shaped arm tension spring nut is provided on one side of the lower part of the Y-shaped arm, and a main tension spring is connected to the Y-shaped arm tension spring nut. Without changing the original structure and without changing the position and action mode of the original linkage mode, its reliability is higher. In addition, it will not cause the problem of inconvenient disassembly and assembly due to the traditional main tension spring being on the upper side of the driven crank arm. Thus, the interchange problem between the oil-immersed contact assembly and the distributed contact assembly can be quickly completed.

[0016] (3) By installing a first threaded crank arm pin for connecting one end of a compensation spring on the compensation crank arm and a second threaded crank arm pin between one end of the Y-shaped arm and the main crank arm, especially by clamping the first threaded crank arm pin and the second threaded crank arm pin with a stop circlip, only by removing the stop circlip can the disassembly of some components be achieved, so that it is no longer necessary to disassemble the entire linkage mechanism to conveniently replace and maintain the contacts, greatly improving the replacement and maintenance efficiency.

[0017] (4) Through the structural design of the Y-shaped arm, the main crank arm placement position, compensation spring placement position, main spring placement position and fixed bracket installation position of the Y-shaped arm are cleverly utilized to integrate them into an organic unified installation structure, with good action reliability and easy installation and disassembly, further improving the operation reliability and the convenience of disassembly and assembly. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the linkage mechanism of the contact group of the horizontal switch machine of the present invention;

[0019] Figure 2 It is a front view structural schematic diagram of the linkage mechanism of the contact group of the horizontal switch machine of the present invention;

[0020] Figure 3 It is a side view structural schematic diagram of the linkage mechanism of the contact group of the horizontal switch machine of the present invention;

[0021] Figure 4 It is a schematic diagram of the first state of removing the contact group mechanism in the present invention;

[0022] Figure 5 It is a schematic diagram of the second state of removing the contact group mechanism in the present invention. Detailed Description of the Invention

[0023] The following further describes in detail the horizontal linkage mechanism of the contact group of the switch machine of the present invention in conjunction with the drawings and specific embodiments.

[0024] As shown in the figure, the horizontal linkage mechanism of the switch machine contact group of the present utility model includes a Y-shaped arm 1, an upper crank arm 3 and a compensation crank arm 4 that are hinged on the main shaft 2 and can swing synchronously. There is a main crank arm 5 hinged between the upper right side of the top of the Y-shaped arm 1 and the upper part of the upper crank arm 3. Specifically, the right side of the upper end of the Y-shaped arm 1 is hinged to the lower end of the main crank arm 5 through a second threaded crank arm pin 13. A second stop snap spring 17 is clamped on the second threaded crank arm pin 13. The upper end of the main crank arm 5 is hinged to the top of the upper crank arm 3 through a second stepped crank arm pin 14. There is a clearance compensation tension spring 6 hinged between the upper left side of the top of the Y-shaped arm 1 and the upper part of the compensation crank arm 4. As can be seen from the figure, a first threaded crank arm pin 9 for connecting with the lower end of the clearance compensation tension spring 6 is installed on the said Y-shaped arm 1. A first clearance compensation tension spring nut 11 is installed on the first threaded crank arm pin 9. The lower end of the clearance compensation tension spring 6 is connected to the first threaded crank arm pin 9 and is located at the first clearance compensation tension spring nut 11, and is isolated and positioned by the first clearance compensation tension spring nut 11. A first stop snap spring 15 is clamped on the first threaded crank arm pin 9. Thus, the Y-shaped arm 1 can be disassembled from the compensation crank arm 4 and the main crank arm 5 through the first stop snap spring 15 and the second stop snap spring 17, and both disassembly and assembly are very convenient. A first stepped crank arm pin 10 for connecting with the upper end of the clearance compensation tension spring 6 is installed on the compensation crank arm 4. A second clearance compensation tension spring nut 12 is installed on the first stepped crank arm pin 10. As can be seen from the figure, the upper end of the clearance compensation tension spring 6 is connected to the first stepped crank arm pin 10 and is located at the second clearance compensation tension spring nut 12, and is isolated and positioned by the second clearance compensation tension spring nut 12. A Y-shaped arm tension spring nut 7 is arranged on the lower left side of the Y-shaped arm 1. A main tension spring 8 is connected to the Y-shaped arm tension spring nut 7. The Y-shaped arm 1 is formed on one side of the moving contact frame 16 of the switch machine.

[0025] Furthermore, self-lubricating bushings are installed on the said first threaded crank arm pin 9, first stepped crank arm pin 10, second threaded crank arm pin 13 and second stepped crank arm pin 14.

[0026] Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A horizontal linkage mechanism of a switch machine contact group, characterized in that: The invention comprises a Y-shaped arm (1), an upper crank arm (3) and a gap compensation crank arm (4) which are hinged on a main shaft (2) and can swing synchronously, a main crank arm (5) being hinged between one side of the top upper end of the Y-shaped arm (1) and the upper part of the upper crank arm (3), a gap compensation tension spring (6) being hinged between the other side of the top upper end of the Y-shaped arm (1) and the upper part of the gap compensation crank arm (4), a Y-shaped arm tension spring nut (7) being arranged on one side of the lower part of the Y-shaped arm (1), and a main tension spring (8) being connected to the Y-shaped arm tension spring nut (7).

2. The horizontal linkage mechanism of the switch machine contact group according to claim 1, characterized in that: The Y-shaped arm (1) is provided with a No. 1 threaded crank arm pin (9) for connecting to one end of a gap compensation tension spring (6), and the compensation crank arm (4) is provided with a No. 1 stepped crank arm pin (10) for connecting to the other end of the gap compensation tension spring (6).

3. The horizontal linkage mechanism of the switch machine contact group according to claim 2, characterized in that: A No. 1 gap compensating tension spring nut (11) is installed on the No. 1 threaded crank arm pin (9), and a No. 2 gap compensating tension spring nut (12) is installed on the No. 1 stepped crank arm pin (10); one end of the gap compensating tension spring (6) is connected to the No. 1 gap compensating tension spring nut (11), and the other end of the gap compensating tension spring (6) is connected to the No. 2 gap compensating tension spring nut (12).

4. The horizontal linkage mechanism of the switch machine contact group according to claim 2 or 3, characterized in that: A No. 2 threaded crank arm pin (13) is installed between the Y-shaped arm (1) and one end of the main crank arm (5), and a No. 2 stepped crank arm pin (14) is installed between the other end of the main crank arm (5) and the upper crank arm (3).

5. The horizontal linkage mechanism of the switch machine contact group according to claim 2, characterized in that: A first stop spring (15) is clamped onto the first threaded crank arm pin (9).

6. The horizontal linkage mechanism of the switch machine contact group according to claim 1, characterized in that: The Y-shaped arm (1) is formed on one side of a moving contact frame (16) of the switch machine.

7. The horizontal linkage mechanism of the switch machine contact group according to claim 4, characterized in that: A second stop spring (17) is clamped onto the second threaded crank arm pin (13).

8. The horizontal linkage mechanism of the switch machine contact group according to claim 7, characterized in that: The No. 1 threaded crank arm pin (9), the No. 1 stepped crank arm pin (10), the No. 2 threaded crank arm pin (13), and the No. 2 stepped crank arm pin (14) are all provided with self-lubricating bushings.

Images