Switch tube moving contact support positioning tool of high-voltage electric appliance

Abstract

The utility model discloses a positioning tool for a switch tube moving contact support of a high-voltage electric appliance. Comprising a three-hole equivalent rotating seat used for placing a static contact of the high-voltage contact switch tube, a torsion bearing fork entry mechanism used for fixing a bearing flat square of the high-voltage contact switch tube, and a space center line positioning mechanism used for fixing a moving contact of the high-voltage contact switch tube. The three-hole equivalent rotating seat is installed on the upper bottom face of the tail end of the torsion bearing fork opening mechanism in a sliding and rotating mode, and the space center line positioning mechanism is arranged on the upper bottom face of the tail end of the torsion bearing fork opening mechanism and located on one side of the three-hole equivalent rotating seat. The positioning tool for the switch tube moving contact support of the high-voltage electric appliance can meet the requirement for torque bearing of the switch tube moving contact of the high-voltage electric appliance, can meet the requirement for accurate positioning of spatial positions of all parts assembled by an insulator and the high-voltage contact, and can also be convenient to operate, labor-saving, reliable in quality, safe and stable.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum circuit breaker production and maintenance, and in particular to a positioning tool for a moving contact bracket of a switch tube of a high-voltage electrical appliance. Background Art

[0002] TDV01 vacuum circuit breaker is a new independently developed electric held vacuum circuit breaker and the core electrical product of the branch. It is mainly used for the disconnection and connection of the main circuit of locomotives or EMUs. It can perform overload protection and short-circuit protection under the control of the vehicle safety system. It is a core high-voltage protection electrical appliance.

[0003] The high-voltage components of the TDV01 vacuum circuit breaker are all assembled in a narrow space with a diameter of 165 mm and a depth of 677 mm. It is difficult to realize the spatial position assembly and positioning operation between the components. Therefore, it is necessary to move the high-voltage contact assembly (switch tube assembly of high-voltage electrical appliances) out of the insulator for assembly, and then install the high-voltage contact assembly components as a whole into the insulator. According to the requirements of the design process, it can be determined that the assembly of the high-voltage moving contact is based on one of the three mounting holes at 120° to each other at the top of the insulator. This requires that the central axis direction of the bracket pin hole on the high-voltage moving contact is consistent with the central symmetric axis direction of the three mounting holes at 120° to each other of the high-voltage static contact, which is the spatial positioning reference for the assembly.

[0004] The connection method of the high-voltage moving contact is the end face connection method. According to the manufacturer's installation instructions for the high-voltage contacts, when the moving conductive rod of the high-voltage switch contact is connected at the end face, the conductive rod must be prevented from rotating. If the moving conductive rod is not fixed, the torque it carries is greater than about 10N·m, which will cause the internal protective bellows to be twisted, thereby destroying the vacuum environment of the high-voltage contact and causing the high-voltage breaking capacity of the TDV01 vacuum circuit breaker to fail. Therefore, during the assembly process, the high-voltage moving contact must be fixed during the connection and assembly, and the torque must be carried by the moving conductive rod and cannot be transmitted to the inside of the switch tube of the high-voltage electrical appliance. Analyzing the installation size relationship between the integrated insulator and the high-voltage contact switch tube, the three mounting holes on the insulator are The bolts connecting the fastening insulator and the three mounting holes of the static contact of the high-voltage contact switch tube are M12mm, so the radial clearance between the mounting holes and the bolts is 1mm. When the two are assembled, the high-voltage contact switch tube can rotate around the center line of the insulator at an angle of ±1.79°, that is, after the bracket is assembled, the projection angle between the center line of its pin shaft and the central symmetry line of the three mounting holes of the static contact of the high-voltage contact on the vertical axis of the high-voltage contact is ±1.79°. It is difficult for existing assembly tools to meet the above requirements.

[0005] How to design and manufacture a tooling for assembling the high-voltage contact switch tube, the core assembly part of the TDV01 vacuum circuit breaker, is a technical problem that needs to be solved urgently by technical personnel in this field. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a positioning tool for the moving contact bracket of the switch tube of a high-voltage electrical appliance. Regardless of the random changes of the center line of the flat square of the moving pole of the high-voltage contact switch tube and the symmetrical center line of the three mounting holes of the static contact between 0° and 180°, the tooling of the present application can meet the bearing capacity of the torque of the moving contact of the switch tube of the high-voltage electrical appliance, and can not only meet the precise spatial positioning of the various components of the insulator and high-voltage contact assembly, but also facilitate operation, save labor, have reliable quality, and be safe and stable.

[0007] The technical solution provided by the utility model is as follows:

[0008] A positioning tool for a moving contact bracket of a switch tube of a high-voltage electrical appliance comprises a three-hole equivalent rotating seat for placing a static contact of the high-voltage contact switch tube, a torque-bearing fork mechanism for fixing a load-bearing flat square of the high-voltage contact switch tube, and a spatial centerline positioning mechanism for fixing a moving contact of the high-voltage contact switch tube. The three-hole equivalent rotating seat can be slidably and rotatably mounted on the upper bottom surface of the end of the torque-bearing fork mechanism, and the spatial centerline positioning mechanism is arranged on the upper bottom surface of the end of the torque-bearing fork mechanism and is located on one side of the three-hole equivalent rotating seat.

[0009] Preferably, the torque bearing fork mechanism comprises a base, a torque bearing transmission rod and a torque clamp, the torque clamp and the base are respectively vertically arranged at the upper and lower ends of the torque bearing transmission rod, and the three-hole equivalent rotating seat is arranged on the base.

[0010] Preferably, the spatial centerline positioning mechanism comprises a bracket centerline positioning block directly connected to the moving contact of the high-voltage contact switch tube and a positioning slider combination for supporting the bracket centerline positioning block, and the bracket centerline positioning block is provided with a U-shaped positioning hole.

[0011] Preferably, the positioning slider combination includes a first slider, a second slider and a third slider, the first slider is connected to the center line positioning block of the bracket, the first slider and the third slider are respectively vertically arranged at the upper and lower ends of the second slider, and one end of the third slider is detachably fixed to one side of the three-hole equivalent rotating seat.

[0012] Preferably, the three-hole equivalent rotating seat includes a disc and a conical positioning pin arranged on the disc and cooperating with the static contact of the high-voltage contact switch tube, the conical positioning pin is arranged in the central circular groove of the disc, and three notches are arranged on the edge of the outer shaft of the disc, and the three notches are arranged at 120°.

[0013] Preferably, a pressure block for limiting the rotation of the three-hole equivalent rotating seat is provided at a notch of the disc, and the pressure block is connected to the disc via screws.

[0014] Preferably, another notch of the disc is connected to the spatial centerline positioning mechanism via a bolt assembly.

[0015] Preferably, an operating portion for facilitating rotation is provided on the three-hole equivalent rotating seat.

[0016] The present application has the following advantages over the prior art:

[0017] The positioning tool for the moving contact bracket of the switch tube of the high-voltage electrical appliance of the present application is specially designed for the precise assembly of the high-voltage contact switch tube, which is the core assembly part of the TDV01 type vacuum circuit breaker. The tool can accurately locate the spatial position of the high-voltage contact bracket of the TDV01 type vacuum circuit breaker (that is, meet the assembly position accuracy requirements of the design process), realize the assembly function, and assist in the development of new products. The application of the tool shortens the trial production cycle of new product prototypes, is conducive to the mass production of new products, and is conducive to improving the assembly quality. The tool can control the assembly accuracy of the product within 0.15°, which is 12 times the design accuracy of the product, and can 100% ensure that the assembly quality of each high-voltage contact switch tube is qualified; in addition, the tool structure of the present application is stable and safe, can meet the torque bearing of the moving contact of the switch tube of the high-voltage electrical appliance and the assembly requirements of the product, and is easy to operate, labor-saving, and reliable in quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a structural schematic diagram of a positioning tool for a moving contact support of a switch tube of a high-voltage electrical appliance in an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a three-hole equivalent rotating seat in an embodiment of the utility model;

[0021] Figure 3 for Figure 2 A partial cross-sectional view of

[0022] Figure 4 It is a structural schematic diagram of the torque bearing fork mechanism in the embodiment of the utility model;

[0023] Figure 5It is a structural schematic diagram of the combination of the torque bearing fork mechanism and the three-hole equivalent rotating seat in the embodiment of the utility model;

[0024] Figure 6 This is a structural schematic diagram of the positioning slider assembly in the embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the centerline positioning block of the bracket in the embodiment of the utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the high-voltage contact switch tube in the embodiment of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of the use of the positioning tool for the moving contact support of the switch tube of the high-voltage electrical appliance in the embodiment of the utility model.

[0028] Reference numerals:

[0029] 1. Static contact; 2. Three-hole equivalent rotating seat; 21. Disc; 211. Center circular groove; 212. Notch; 22. Conical positioning pin; 23. Operating part; 3. Load-bearing flat square; 4. Torque bearing fork mechanism; 41. Base; 42. Torque bearing transmission rod; 43. Torque clamp; 5. Moving contact; 6. Space centerline positioning mechanism; 61. Bracket centerline positioning block; 62. Positioning slider combination; 621. First slider; 622. Second slider; 623. Third slider; 7. Press block. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] like Figure 1-9 As shown, an embodiment of the utility model provides a positioning tool for the moving contact bracket of the switch tube of a high-voltage electrical appliance, including a three-hole equivalent rotating seat 2 for placing the static contact 1 of the high-voltage contact switch tube, a torque-bearing fork mechanism 4 for fixing the load-bearing flat square 3 of the high-voltage contact switch tube, and a spatial centerline positioning mechanism 6 for fixing the moving contact 5 of the high-voltage contact switch tube. The three-hole equivalent rotating seat 2 can be slidably and rotatably installed on the upper bottom surface of the end of the torque-bearing fork mechanism 4, and the spatial centerline positioning mechanism 6 is arranged on the upper bottom surface of the end of the torque-bearing fork mechanism 4 and is located on one side of the three-hole equivalent rotating seat 2.

[0032] In this embodiment, the torque bearing fork mechanism 4 includes a base 41, a torque bearing transmission rod 42 and a torque grip 43. The torque grip 43 and the base 41 are respectively vertically arranged at the upper and lower ends of the torque bearing transmission rod 42, and the three-hole equivalent rotating seat 2 is arranged on the base 41. The torque bearing fork mechanism 4 cooperates with the force-bearing flat square 3 of the high-voltage contact switch tube through the fork, and can transmit the torque applied by the outside to the moving contact 5 during the assembly process to the working clamp, thereby preventing large torque from mechanically damaging the switch tube of the high-voltage electrical appliance.

[0033] In this embodiment, the spatial centerline positioning mechanism 6 includes a bracket centerline positioning block 61 directly connected to the moving contact 5 of the high-voltage contact switch tube and a positioning slider assembly 62 for supporting the bracket centerline positioning block 61. The bracket centerline positioning block 61 is provided with a U-shaped positioning hole. One end of the bracket centerline positioning block 61 is used to externalize the bracket centerline position, and the other end cooperates with the positioning slider assembly 62 to realize the spatial position positioning of the assembly operation. The positioning slider assembly 62 includes a first slider 621, a second slider 622 and a third slider 623. The first slider 621 is connected to the bracket centerline positioning block 61. The first slider 621 and the third slider 623 are respectively vertically arranged at the upper and lower ends of the second slider 622. One end of the third slider 623 is detachably fixed to one side of the three-hole equivalent rotating seat 2. The structural design of the spatial centerline positioning mechanism 7 can realize the alignment of the bracket centerline position with the positioning reference selected by the static contact 1 to meet the assembly requirements of the design process.

[0034] In this embodiment, the three-hole equivalent rotating seat 2 includes a disc 21 and a conical positioning pin 22 arranged on the disc 21 and cooperating with the static contact 1 of the high-voltage contact switch tube. The conical positioning pin 22 is arranged in the central circular groove 211 of the disc 21. Three notches 212 are arranged on the outer axis edge of the disc 21, and the three notches 212 are arranged at 120°. A pressing block 7 for limiting the rotation of the three-hole equivalent rotating seat 2 is arranged at one notch 212 of the disc 21, and the pressing block 7 is connected to the disc 21 by screws. Another notch 212 of the disc 21 is connected to the spatial centerline positioning mechanism 6 by a bolt assembly. The three-hole equivalent rotating seat 2 can realize the externalization of the three internal threaded holes of the static contact 1 of the high-voltage contact switch tube through the three conical surface adaptive conical positioning pins 22 and the three externalized notches on the rotating base 41. Since the three internal threaded holes are 120° to each other, when using the tooling, you can arbitrarily select an externalized notch 212 to find the assembly process benchmark.

[0035] In this embodiment, the slidable and rotatable combination mechanism design of the base 41 and the three-hole equivalent rotating seat 2 can solve the problem that no matter the center line of the flat square of the moving contact 5 of the high-voltage contact switch tube and the symmetrical center line of the three mounting holes of the static contact 1 randomly change from 0° to 180°, the bearing flat square that meets the torque of the moving contact 5 of the high-voltage contact switch tube and the torque bearing fork can be engaged with each other to meet the torque bearing of the moving contact 5 during the assembly operation.

[0036] In this embodiment, the three-hole equivalent rotating seat 2 is provided with an operating portion 23 for facilitating rotation, and the operating portion 23 may be an M6X20 bolt.

[0037] The working process of the positioning tooling for the moving contact bracket of the switch tube of the high-voltage electrical appliance of the present application is as follows:

[0038] like Fig. 9 As shown, first the tooling is Figure 5 In the state shown, the high-voltage contact switch tube is placed on the three-hole equivalent rotating seat 2 and positioned by the conical positioning pin 22, so that the three threaded holes on the static contact 1 of the high-voltage contact switch tube are accurately positioned so that the positions of the three threaded holes are the positions corresponding to the three notches 212 on the three-hole equivalent rotating seat 2; the three-hole equivalent rotating seat 2 is rotated by grasping the operating part with the hand, and the high-voltage contact switch tube also rotates synchronously. When the load-bearing flat square 3 (such as Figure 8 When the bracket is aligned with the torque catch 43, push it into the torque catch 43 as a whole and get stuck, tighten the bracket centerline positioning block 61, press the three-hole equivalent rotating seat 2 with the pressing block 7, and insert the positioning slider assembly 62 into a suitable notch 212 on the three-hole equivalent rotating seat 2 and tighten it on the three-hole equivalent rotating seat 2 with bolts, insert the bracket centerline positioning block 61 into the assembly hole of the first slider 621 and snap it into the top U-shaped positioning hole of the positioning slider assembly 62 as a whole to realize the spatial positioning of the bracket centerline positioning block 61; finally, screw the accessories onto the thread of the moving contact 5 of the high-voltage contact switch tube and load the torque to complete the operation.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning tool for a moving contact bracket of a switch tube of a high-voltage electrical appliance, characterized in that: The invention comprises a three-hole equivalent rotating seat (2) for placing a static contact (1) of a high-voltage contact switch tube, a torque bearing fork mechanism (4) for fixing a load-bearing flat square (3) of the high-voltage contact switch tube, and a spatial centerline positioning mechanism (6) for fixing a movable contact (5) of the high-voltage contact switch tube, wherein the three-hole equivalent rotating seat (2) is slidably and rotatably mounted on the upper bottom surface of the end of the torque bearing fork mechanism (4), and the spatial centerline positioning mechanism (6) is arranged on the upper bottom surface of the end of the torque bearing fork mechanism (4) and is located on one side of the three-hole equivalent rotating seat (2).

2. The positioning tool for the movable contact support of the switch tube of the high-voltage electrical appliance according to claim 1 is characterized in that: The torque bearing fork mechanism (4) comprises a base (41), a torque bearing transmission rod (42) and a torque clamp (43); the torque clamp (43) and the base (41) are respectively arranged vertically at the upper and lower ends of the torque bearing transmission rod (42); and the three-hole equivalent rotating seat (2) is arranged on the base (41).

3. The positioning tool for the movable contact support of the switch tube of the high-voltage electrical appliance according to claim 1 is characterized in that: The spatial centerline positioning mechanism (6) comprises a support centerline positioning block (61) directly connected to the moving contact (5) of the high-voltage contact switch tube and a positioning slide block assembly (62) for supporting the support centerline positioning block (61); the support centerline positioning block (61) is provided with a U-shaped positioning hole.

4. The positioning tool for the movable contact support of the switch tube of the high-voltage electrical appliance according to claim 3 is characterized in that: The positioning slider assembly (62) comprises a first slider (621), a second slider (622) and a third slider (623); the first slider (621) is connected to the bracket centerline positioning block (61); the first slider (621) and the third slider (623) are respectively vertically arranged at the upper and lower ends of the second slider (622); one end of the third slider (623) is detachably fixed to one side of the three-hole equivalent rotating seat (2).

5. The positioning tool for the movable contact support of the switch tube of the high-voltage electrical appliance according to any one of claims 1 to 4, characterized in that: The three-hole equivalent rotating seat (2) comprises a disc (21) and a conical positioning pin (22) arranged on the disc (21) and cooperating with the static contact (1) of the high-voltage contact switch tube, wherein the conical positioning pin (22) is arranged in a central circular groove (211) of the disc (21), and three notches (212) are arranged on the outer axis edge of the disc (21), and the three notches (212) are arranged at 120 degrees.

6. The positioning tool for the movable contact support of the switch tube of the high-voltage electrical appliance according to claim 5 is characterized in that: A pressing block (7) for limiting the rotation of the three-hole equivalent rotating seat (2) is provided at a notch (212) of the circular disk (21), and the pressing block (7) is connected to the circular disk (21) via screws.

7. The positioning tool for the movable contact support of the switch tube of the high-voltage electrical appliance according to claim 6 is characterized in that: Another notch (212) of the disc (21) is connected to the spatial centerline positioning mechanism (6) via a bolt assembly.

8. The positioning tool for the movable contact support of the switch tube of the high-voltage electrical appliance according to any one of claims 1 to 4, characterized in that: The three-hole equivalent rotating seat (2) is provided with an operating portion (23) for facilitating rotation.

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