A contact set linkage for a close-up inspector
By introducing limit blocks, splined shafts, flange bearings, and disc springs into the contact group linkage device of the tight-fitting inspection device, the problem that the existing device cannot adapt to the layout and maintenance-free contact group is solved, and the stable and reliable linkage and accurate operation of the contact group are realized, thus expanding the scope of application.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HONGCHUANG TRACK EQUIPMENT CO LTD
- Filing Date
- 2025-10-11
- Publication Date
- 2026-07-21
AI Technical Summary
The existing contact group linkage device of the tight-fitting inspection device cannot meet the needs of the layout and maintenance-free contact group, resulting in unstable and unreliable contact group linkage.
A linkage device was designed, comprising a moving contact cavity, a moving contact frame, a limiting block, a splined shaft, a flange bearing, a disc spring, and a Y-shaped crank arm. The limiting block limits the angle of the moving contact frame, the splined shaft rotates synchronously and is supported by the flange bearing, the disc spring is installed for clearance compensation, and the Y-shaped crank arm and the compensation spring eliminate the clearance of the transmission components, thereby achieving stable and reliable linkage of the contact group.
It improves the installation stability and reliability of the contact group, ensures the accurate operation of the contact group, can adapt to the interchange of the arranged and maintenance-free contact groups, and expands the application range.
Smart Images
Figure CN224528681U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a linkage device for a tight fit inspection device, specifically a linkage device for a tight fit inspection device contact group. Background Technology
[0002] A contact checker is a device used to detect whether the switch rail and the stock rail of a turnout are in close contact and to provide the position status of the turnout. It is linked to the switch machine and operates as the turnout moves. When the turnout is switched into position and the switch rail and the stock rail are in close contact, the contacts inside the contact checker close or open. Existing contact checker contact group linkage devices can only be used for arranged contact groups and cannot meet the needs of maintenance-free contact groups. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a contact group linkage device for a tight fit inspection device suitable for both arranged contacts and maintenance-free contacts.
[0004] To solve the above-mentioned technical problems, the contact group linkage device of the contact inspection device of this utility model includes a contact group base with a moving contact cavity, a moving contact frame installed in the moving contact cavity through a support shaft, and a linkage component arranged beside the contact group base and cooperating with the moving contact frame. The contact group base is provided with a limiting block located in the moving contact cavity and used to limit the angle of the moving contact frame. The support shaft is also equipped with a starting block located on the opposite side of the linkage mechanism and can drive the linkage component to swing after the starting block is lifted.
[0005] The support shaft is a spline shaft, and the moving contact bracket is mounted on the spline shaft and can rotate synchronously with the spline shaft.
[0006] The base of the contact assembly is provided with mounting holes on both sides of the moving contact cavity, and the support shaft is equipped with flange bearings that are supported in the mounting holes.
[0007] Disc springs are installed on the support shaft on both sides of the moving contact frame to compensate for the assembly gap of the moving contact frame.
[0008] The linkage assembly includes a Y-shaped crank arm, an upper right crank arm hinged to the main shaft and capable of swinging synchronously, and a gap compensation assembly. A main crank arm is hinged between the upper part of the top of the Y-shaped crank arm and the upper part of the upper right crank arm. The other side of the top of the Y-shaped crank arm is hinged to the gap compensation assembly. A Y-shaped crank arm tension spring nut is provided on the lower part of the Y-shaped crank arm, and a starting tension spring is connected to the Y-shaped crank arm tension spring nut.
[0009] The gap compensation assembly includes an upper left crank arm, a first tension spring connecting sleeve hinged to the top of the Y-shaped crank arm via a first threaded pin, a second tension spring connecting sleeve hinged to the upper left crank arm via a second pin, and a gap compensation tension spring connecting the first tension spring connecting sleeve and the second tension spring connecting sleeve.
[0010] A splined bushing is mounted on the splined shaft, and the flange bearing is mounted outside the splined bushing.
[0011] The advantages of this utility model are: (1) By installing the moving contact frame in the moving contact cavity through the support shaft, and setting a limiting block on the base of the contact group to limit the movement of the moving contact frame, the swing angle of the moving contact frame can be limited, thus ensuring the accuracy and reliability of its movement.
[0012] (2) The moving contact bracket is installed on the spline shaft and can rotate synchronously with the spline shaft, which makes the moving contact bracket easy to install and has good installation stability. At the same time, the moving contact bracket is supported on the contact assembly base by the flange bearing, which further improves the stability of use.
[0013] (3) Disc springs are installed on both sides of the moving contact frame on the support shaft, which can compensate for the axial clearance of the moving contact frame assembly and the contact group linkage device, thereby improving the reliability of the assembly.
[0014] (4) By hinged a compensating spring between the top of the Y-shaped crank arm and the upper part of the compensating crank arm, the gaps between the transmission components can be effectively eliminated. Even if the gap between the shaft holes of each component is caused by vibration, the gap can be effectively compensated by the compensating spring, which greatly improves the reliability of the contact and ensures the accuracy of the contact group action.
[0015] (5) A Y-shaped arm tension spring nut is provided on one side of the lower part of the Y-shaped crank arm. The starting tension spring is connected to the Y-shaped arm tension spring nut. Without changing the original linkage position and action mode, it makes the reliability higher. In addition, the upper end of the Y-shaped crank arm has threaded crank arm pins on both sides, which can quickly complete the interchange of oil-immersed maintenance-free contact assembly and arranged contact assembly, so that it can adapt to both types of contact groups at the same time and has a wider range of applications. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the linkage device of the contact group of the tight-fit inspection device of this utility model; Figure 2 This is a side view of the linkage device of the contact group of the tight-fitting inspection device of this utility model; Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure; Figure 4This is a schematic diagram showing the assembly state of the moving contact frame and the linkage mechanism in this utility model; Figure 5 This is a schematic diagram showing the assembly state of the support shaft and the linkage mechanism in this utility model; Figure 6 for Figure 1 A magnified structural diagram at point A. Detailed Implementation
[0017] The following detailed description of the contact group linkage device of the tight-fitting inspection device of this utility model, in conjunction with the accompanying drawings and specific embodiments, will be provided in further detail.
[0018] As shown in the figure, the contact group linkage device of the contact inspection device of this utility model includes a contact group base 2 with a movable contact cavity 1, a movable contact frame 4 installed in the movable contact cavity via a support shaft 3, and a linkage component 5 disposed beside the contact group base and cooperating with the movable contact frame. The support shaft 3 is a splined shaft, and the movable contact frame 4 is mounted on the splined shaft so that it can rotate synchronously with the splined shaft. The contact group base 2 is provided with mounting holes on both sides of the movable contact cavity 1, and flange bearings 8 supported in the mounting holes are mounted on the support shaft 3. Thus, the support shaft, supported by the flange bearings 8 in the mounting holes, runs smoothly on the contact group base. Meanwhile, disc springs 9 are installed on both sides of the moving contact frame on the support shaft 3. After the moving contact frame is installed on the support shaft, the disc springs compensate for the assembly gap of the moving contact frame, which further improves its installation reliability. In addition, the spline connection between the moving contact frame and the spline shaft ensures good installation consistency and more stable and reliable operation. The contact group base 2 is provided with a limiting block 6 located in the moving contact cavity and used to limit the angle of the moving contact frame. The rotation angle of the moving contact frame is limited by the limiting block 6, making its operation more accurate. The support shaft 3 is also equipped with a starting block 7 located on the opposite side of the linkage mechanism, which can drive the linkage mechanism to swing after the starting block is lifted.
[0019] Furthermore, the linkage component 5 includes a Y-shaped crank arm 11, an upper right crank arm 13 hinged to the main shaft 12 and capable of synchronous swinging, and a gap compensation component 14. A main crank arm 15 is hinged between the upper top of the Y-shaped crank arm 11 and the upper part of the upper right crank arm 13. The other upper top of the Y-shaped crank arm 11 is hinged to the gap compensation component 14. A Y-shaped crank arm tension spring nut 17 is provided on the lower part of the Y-shaped crank arm 11, and a starting tension spring 18 is connected to the Y-shaped crank arm tension spring nut 17. In this embodiment, the gap compensation component 14 includes an upper left crank arm 141 and a first tension spring connecting sleeve 143 hinged to the upper top of the Y-shaped crank arm via a first pin (which can be a threaded pin). The second tension spring connecting sleeve 145, hinged to the upper left crank arm 141 by the second pin 144, and the gap compensation tension spring 146 connecting the first tension spring connecting sleeve 143 and the second tension spring connecting sleeve 145, achieve the purpose of eliminating the gaps between the transmission components through this structural design. Even if the shaft hole mating gap of each component is caused by vibration, the gap can be effectively compensated by the compensation tension spring, which greatly improves the reliability of the contact and ensures the accuracy of the contact group action. At the same time, it makes the reliability higher without changing the original linkage position and action mode. Furthermore, the upper end of the Y-shaped crank arm has threaded crank arm pins on both sides, which can quickly complete the interchange of oil-immersed contact assembly and arranged contact assembly.
[0020] In addition, since bearings may jam in complex external environments, two stainless steel splined bushings 31 are installed on the splined shaft, each matching one of the flange bearings 8. The two flange bearings 8 are installed outside one of the splined bushings 31. In other words, a stainless steel splined bushing is added between each flange bearing and the splined shaft. This way, even if the bearing jams, it will not affect the rotation of the splined shaft.
[0021] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A linkage device for a contact group of a tight-fitting inspection device, characterized in that: It includes a contact group base (2) with a moving contact cavity (1), a moving contact frame (4) installed in the moving contact cavity via a support shaft (3), and a linkage component (5) arranged on the side of the contact group base and cooperating with the moving contact frame. The contact group base (2) is provided with a limiting block (6) located in the moving contact cavity and used to limit the angle of the moving contact frame. The support shaft (3) is also provided with a starting block (7) located on the opposite side of the linkage mechanism and can drive the linkage mechanism to swing after the starting block is lifted.
2. The contact group linkage device for the tight-fitting inspection device according to claim 1, characterized in that: The support shaft (3) is a spline shaft, and the moving contact bracket (4) is mounted on the spline shaft and can rotate synchronously with the spline shaft.
3. The contact group linkage device for the tight fit inspection device according to claim 2, characterized in that: The base (2) of the contact assembly is provided with mounting holes on both sides of the moving contact cavity (1), and the support shaft (3) is provided with flange bearings (8) supported in the mounting holes.
4. The contact group linkage device for the tight fit inspection device according to claim 3, characterized in that: Disc springs (9) are installed on the support shaft (3) on both sides of the moving contact frame to compensate for the assembly gap of the moving contact frame.
5. The contact group linkage device for the tight fit inspection device according to claim 1, 2 or 4, characterized in that: The linkage component (5) includes a Y-shaped crank arm (11), an upper right crank arm (13) hinged to the main shaft (12) and capable of swinging synchronously, and a gap compensation component (14). A main crank arm (15) is hinged between the upper part of the top of the Y-shaped crank arm (11) and the upper part of the upper right crank arm (13). The other side of the top of the Y-shaped crank arm (11) is hinged to the gap compensation component (14). A Y-shaped crank arm tension spring nut (17) is provided on the lower part of the Y-shaped crank arm (11). A starting tension spring (18) is connected to the Y-shaped crank arm tension spring nut (17).
6. The contact group linkage device for the tight fit inspection device according to claim 5, characterized in that: The gap compensation assembly (14) includes an upper left crank arm (141), a first tension spring connecting sleeve (143) hinged to the top of the Y-shaped crank arm via a first threaded pin (142), a second tension spring connecting sleeve (145) hinged to the upper left crank arm (141) via a second pin (144), and a gap compensation tension spring (146) connected between the first tension spring connecting sleeve (143) and the second tension spring connecting sleeve (145).
7. The contact group linkage device for the tight fit inspection device according to claim 3, characterized in that: A splined bushing (31) is installed on the splined shaft, and the flange bearing (8) is installed outside the splined bushing (31).