Torque applying tool for static contact structure of disconnecting switch
By designing torque application processing and assembly, the torque application wrench drives the static arc contacts to set the torque to be assembled on the elastic telescopic mechanism, the problem of the assembly of the static arc contacts and the elastic telescopic mechanism in the prior art is solved, and the uniform standard of fastening of the connection is achieved, and the breaking performance and service life of the isolating switch are improved.
Patent Information
- Application Number
- CN202421463586.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The assembly of existing arc contacts and elastic telescopic mechanisms is entirely based on the feel of the hand, and the quality and effect of the connection cannot be guaranteed, which affects the disconnection performance and service life of the isolating switch.
A torque application processing unit is designed. Through the cooperation of the cover cylinder with a shrink-mouth structure and the anti-collision member, the torque application wrench is used to drive the arc contacts to set the torque to assemble the elastic telescopic mechanism to ensure the tightness of the connection.
It realizes the unified fastening standard of arc contacts and elastic telescopic mechanisms, improves the disconnection performance of the isolating switch, and extends the service life.
Smart Images
Figure CN222857833U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of isolating switches, in particular to a torque applying tool for a static contact structure of an isolating switch. Background Art
[0002] Isolating switches are an indispensable and important component of today's power system, and their opening and closing times are as high as tens of thousands of times. Conventional moving and static contact structures are mostly matched by plug-in, which can easily cause wear and tear of the static contacts and produce slag. Therefore, on the basis of the existing moving and static contact structures, an elastic telescopic mechanism is added to achieve the conversion from rigid contact to flexible contact to reduce the contact impact force. Therefore, the tightness of the connection between the static arc contact and the elastic telescopic mechanism directly affects the overall performance of the static contact and even the service life of the entire switch. However, at present, the static arc contact is manually assembled to the elastic telescopic mechanism, and the tight connection between the two is achieved entirely by feel. There is no unified standard, and it is difficult to ensure the quality and effect of the connection, which seriously affects the subsequent breaking performance of the isolating switch. Utility Model Content
[0003] The utility model provides a torque applying tool for a static contact structure of an isolating switch, which solves the technical problems that the existing static arc contacts and elastic telescopic mechanisms are assembled entirely by hand feeling and the connection quality and effect cannot be guaranteed.
[0004] The utility model can be realized through the following technical solutions:
[0005] A torque applying tool for a static contact structure of an isolating switch, wherein the static contact structure includes a current-carrying conductor with a notch, a static arc contact and an elastic telescopic mechanism are arranged at the axial position of the notch, the static arc contact is threadedly connected to the elastic telescopic mechanism, and includes a cover tube with a shrinkage structure, an anti-collision piece is clamped at the shrinkage inside the cover tube, the lower opening of the cover tube is matched with the shape of the static arc contact, a connecting joint is arranged on the outer side of the upper opening of the cover tube, the connecting joint is detachably connected to a torque applying wrench, and the torque applying wrench is used to drive the cover tube together with the static arc contact to rotate, so that the static arc contact is assembled on the elastic telescopic mechanism with a set torque.
[0006] Furthermore, the elastic telescopic mechanism adopts a nested inner cylinder and outer cylinder structure, the free end of the inner cylinder is threadedly connected to the static arc contact, a locking piece is arranged inside, and through holes are arranged at the center positions of the static arc contact and the anti-collision piece. One end of the locking rod passes through the through holes of the anti-collision piece and the static arc contact in turn and extends to the locking piece, and cooperates with the locking piece to fix the other end of the locking rod. The torque applying wrench is rotated to drive the cover cylinder together with the static arc contact to rotate, so that the static arc contact is assembled on the inner cylinder with the set torque.
[0007] Furthermore, a plurality of cut surfaces are arranged around the outer surface of the static arc contact, and a corresponding cut surface is also arranged on the inner wall of the lower opening of the cover cylinder.
[0008] Furthermore, the other end of the locking rod is detachably connected to a handle.
[0009] Furthermore, the anti-collision member includes an umbrella-shaped surface arranged toward the static arc contact.
[0010] Furthermore, the anti-collision component is made of nylon.
[0011] The beneficial technical effects of the utility model are:
[0012] 1. By using the tooling of the utility model and the torque applying wrench, the torque can be set to install the static arc contact on the elastic telescopic mechanism, which ensures the tightness of the connection between the two and provides a unified tightening standard, which is a good guarantee for improving the breaking performance of the disconnector and helps to extend the service life of the disconnector.
[0013] 2. Taking into account the particularity of the nested elastic telescopic mechanism, the tooling of the utility model cleverly adds a locking piece inside the elastic telescopic mechanism. With the help of the cooperation of the locking piece and the locking rod, the elastic telescopic mechanism is fixed in place by fixing the locking rod, and then the static arc contact is assembled to the elastic telescopic mechanism by rotating the torque-applying wrench. It can be achieved by operating with both hands, which is very convenient and practical.
[0014] 3. The whole structure is simple, easy to operate, and has strong marketing value. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the cooperation between the moving contact and the stationary contact with the elastic telescopic mechanism in the prior art;
[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 3 It is a schematic diagram of an axial section of the overall structure of the utility model;
[0018] Among them, 1-static arc contact, 2-elastic telescopic mechanism, 3-cover tube, 4-anti-collision member, 5-connecting joint, 6-locking member, 7-locking rod. DETAILED DESCRIPTION
[0019] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings and preferred embodiments.
[0020] In order to reduce the rigid collision between the moving and static contacts during the breaking operation, an elastic expansion mechanism is usually added to the static contact structure, such as a current-carrying conductor with a notch, a static arc contact and an elastic expansion mechanism are arranged at the axial position of the notch, such as Figure 1 As shown, the static arc contact 1 is threadedly connected with the elastic telescopic mechanism 2. Since the static contact structure is a very important component in the disconnector, its assembly directly affects the breaking performance of the disconnector, especially the fastening connection between the static arc contact and the elastic telescopic mechanism. Therefore, the utility model provides a torque applying tool for the static contact structure of the disconnector, such as Figure 2-3 As shown, it includes a cover tube 3 with a constricted structure, and an anti-collision member 4 is clamped at the constricted part inside the cover tube 3. The lower opening of the cover tube 3 matches the shape of the static arc contact 1. A connecting joint 5 is arranged on the outer side of the upper opening of the cover tube 3. The connecting joint 5 is detachably connected to the torque application wrench. The torque application wrench is used to drive the cover tube 3 and the static arc contact 1 to rotate, so that the static arc contact 1 is assembled to the elastic telescopic mechanism 2 with a set torque. Since the static arc contact 1 is arranged inside the recess of the current-carrying conductor, after the cover tube 3 is manually clamped to the static arc contact 1, the torque application wrench is assembled to the connecting joint 5. The torque application wrench can be rotated to drive the static arc contact to rotate, so that the static arc contact is installed on the elastic telescopic mechanism with a set torque to ensure the tightness of the connection. The whole structure is very simple, easy to operate, and highly practical.
[0021] Considering that the cover tube 3 needs to be manually assembled onto the static arc contact 1, the depth of the static arc contact 1 embedded in the cover tube 3 is difficult to control. If the depth is too large, the static arc contact 1 is easy to hit the cover tube 3 during the rotation and installation process. We add an anti-collision member 4 inside the cover tube. The anti-collision member 4 is made of nylon material as a whole, including an umbrella-shaped surface arranged toward the static arc contact 1, and a protrusion matching the shrinkage is arranged at the central position of the umbrella-shaped surface for installation. At the same time, the umbrella-shaped surface can cover the top surface of the static arc contact 1, which plays a good protective role.
[0022] If the elastic telescopic mechanism 2 adopts a nested inner and outer cylinder structure, the free end of the inner cylinder is threadedly connected to the static arc contact. When the static arc contact is rotated, the inner cylinder may also rotate with it, which is not conducive to torque application. Therefore, we set a locking piece 6 inside the inner cylinder. The static arc contact 1 and the anti-collision piece 4 are both provided with through holes at the center positions. One end of the locking rod 7 passes through the through holes of the anti-collision piece 4 and the static arc contact 1 in turn and extends to the locking piece 6, and cooperates with the locking piece 6. In this way, the other end of the locking rod 7 is fixed, and the inner cylinder can be fixed. At this time, the torque application wrench can only drive the cover cylinder together with the static arc contact to rotate, so that the static arc contact is assembled to the inner cylinder with the set torque. We set the locking piece 6 as a hexagon socket bolt, and the end of the locking rod 7 connected to it is set as an external hexagon structure. At this time, as long as the other end of the locking rod 7 is fixed, the inner cylinder can be fixed, which is convenient for screwing the static arc contact 1 onto the inner cylinder; in addition, we can also set a handle that can be detached at the other end of the locking rod 7, so that the locking rod can be fixed by holding the handle.
[0023] In order to achieve the linkage between the static arc contact 1 and the cover tube 3, we arrange multiple cut surfaces around the outer surface of the static arc contact 1, such as four cut surfaces evenly spaced, and corresponding cut surfaces are also arranged on the inner wall of the lower opening of the cover tube 3. In this way, through the staggered cooperation between the cut surfaces and the arc surfaces, a tight connection between the static arc contact 1 and the cover tube 3 is achieved, which is convenient for linkage with the torque application wrench.
[0024] Although specific embodiments of the present invention are described above, those skilled in the art should understand that these are merely examples and that various changes or modifications may be made to these embodiments without departing from the principles and essence of the present invention. Therefore, the scope of protection of the present invention is limited by the appended claims.
Claims
1. A torque applying tool for a static contact structure of an isolating switch, wherein the static contact structure comprises a current-carrying conductor with a notch, a static arc contact and an elastic telescopic mechanism are arranged at the axial position of the notch, and the static arc contact is threadedly connected to the elastic telescopic mechanism, characterized in that: It includes a cover tube with a constricted structure, an anti-collision piece is clamped at the constricted part inside the cover tube, the lower opening of the cover tube matches the shape of the static arc contact, and a connecting joint is provided on the outer side of the upper opening of the cover tube, and the connecting joint is detachably connected to a torque applying wrench. The torque applying wrench is used to drive the cover tube and the static arc contact to rotate, so that the static arc contact is assembled on the elastic telescopic mechanism with a set torque.
2. The torque applying tool for the static contact structure of the isolating switch according to claim 1, characterized in that: The elastic telescopic mechanism adopts a nested inner cylinder and outer cylinder structure, the free end of the inner cylinder is threadedly connected to the static arc contact, and a locking piece is arranged inside. The static arc contact and the anti-collision piece are provided with through holes at their center positions, one end of the locking rod passes through the through holes of the anti-collision piece and the static arc contact in turn and extends to the locking piece, and cooperates with the locking piece to fix the other end of the locking rod, and the torque applying wrench is rotated to drive the cover cylinder together with the static arc contact to rotate, so that the static arc contact is assembled on the inner cylinder with the set torque.
3. The torque applying tool for the static contact structure of the isolating switch according to claim 2, characterized in that: The outer surface of the static arc contact is provided with a plurality of cut surfaces around it, and the inner wall of the lower opening of the cover cylinder is also provided with corresponding cut surfaces.
4. The torque applying tool for the static contact structure of the isolating switch according to claim 2, characterized in that: The other end of the locking rod is detachably connected to a handle.
5. The torque applying tool for the static contact structure of the isolating switch according to claim 1, characterized in that: The anti-collision member comprises an umbrella-shaped surface arranged toward the static arc contact.
6. The torque applying tool for the static contact structure of the isolating switch according to claim 4, characterized in that: The anti-collision component is made of nylon.