Special vacuum arc-extinguishing chamber pulling and aging tool
By designing a special tooling for transition sleeves and connecting nails, the problem of the vacuum arc extinguishing chamber without central threaded holes at the end of the moving conductive rod cannot be detected, and a simple and fast detection process is achieved.
Patent Information
- Application Number
- CN202422251819.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-13
AI Technical Summary
The existing vacuum arc extinguishing chamber dynamic conductive rod ends have no central threaded holes, and it is impossible to use conventional pull-out methods for industrial frequency aging and impact detection.
A special pull-out old tooling including a transition sleeve and a connecting nail is designed. The transition sleeve is set on the moving conductive rod. The connecting nail is fixed to the moving conductive rod through a side threaded hole, and a threaded hole is provided at the end for easy detection using the existing tooling.
The aging and testing of the vacuum arc extinguishing chamber without a central threaded hole at the end of the moving conductive rod is achieved. The structure is simple and the processing cycle is short.
Smart Images
Figure CN223193661U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vacuum interrupter chambers, in particular to a special vacuum interrupter chamber opening and aging tool. Background Art
[0002] The vacuum interrupter is a high-voltage device. During the production process, the contacts need to be pulled a certain distance apart for power frequency aging, power frequency, impact, vacuum degree and other parameter testing to ensure that the product meets various parameter requirements.
[0003] Conventional vacuum interrupters feature a central threaded hole at the end of the moving conductive rod. During the opening operation, a threaded rod is used to connect the rod and, under external force, to pull the moving contacts apart to a desired opening distance. This is followed by tests such as burn-in. In a new vacuum interrupter, at customer request, the moving conductive rod has a diameter of 20 mm. The rod is connected using a conductive clamp to maintain its movement. This requires that the center threaded hole not be machined on the rod end to prevent deformation of the rod after clamping, which could lead to a loose connection. Therefore, existing tooling was unable to open the contacts of this new vacuum interrupter for burn-in, power frequency, and impact testing. Utility Model Content
[0004] The utility model provides a special vacuum interrupter opening and aging tool, which aims to solve the problem that there is no screw hole in the center of the dynamic conductive rod and the conventional opening method cannot be used for power frequency aging and impact detection.
[0005] In order to achieve the above technical purpose, the technical solution adopted by this utility model is:
[0006] A special vacuum interrupter opening and aging tooling, the vacuum interrupter chamber includes a moving conductive rod and a moving end cover plate, the end of the moving conductive rod has no center threaded hole, and two connecting holes are symmetrically provided on the side wall of one end of the moving conductive rod close to the moving end cover plate; the opening and aging tooling includes a transition sleeve and a connecting nail, one end of the transition sleeve is provided with a concave cavity for being sleeved over the moving conductive rod, two side threaded holes are symmetrically provided on the side wall of the concave cavity, and an end threaded hole is provided in the center of the other end; the connecting nail is step-shaped, and is divided into three parts from large to small: a nail cap, a threaded rod section, and a straight rod section, the straight rod section of the connecting nail passes through the transition sleeve and is gap-fitted with the connecting hole on the moving conductive rod, and the threaded rod section is provided with an external thread that matches the threaded hole on the upper side of the transition sleeve.
[0007] Preferably, the depth of the connecting hole is 3 mm, and the thickness of the concave cavity side wall of the transition sleeve is 5 mm.
[0008] Furthermore, the outer peripheral surface of the transition sleeve is provided with a knurling pattern.
[0009] Preferably, the knurling pattern is a twill pattern.
[0010] Another preferred embodiment is that the knurling pattern is a mesh pattern.
[0011] The beneficial effects of the utility model are:
[0012] The vacuum interrupter opening and aging tooling of the utility model is adapted to be switched via a transition sleeve, and can be used to perform aging inspection on a vacuum interrupter without a central threaded hole at the end of a movable conductive rod using the existing opening tooling, and has a simple structure and a short processing cycle. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;
[0015] Figure 2 It is a structural diagram of the vacuum interrupter;
[0016] Figure 3 It is a structural diagram of the transition sleeve;
[0017] Figure 4 It is a structural diagram of the connecting nail.
[0018] Figure markings: 1-moving conductive rod, 11-connecting hole, 2-transition sleeve, 21-concave cavity, 22-side threaded hole, 23-end threaded hole, 3-connecting nail, 31-nail cap, 32-threaded rod section, 33-straight rod section. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0020] A special vacuum interrupter pulls open the aging tooling, such as Figure 1-Figure 4As shown, the vacuum interrupter includes a moving conductive rod 1 and a moving end cover. There is no central threaded hole at the end of the moving conductive rod 1. Two connecting holes 11 are symmetrically provided on the side wall of the moving conductive rod 1 near the moving end cover; the aging tooling includes a transition sleeve 2 and a connecting nail 3. One end of the transition sleeve 2 is provided with a concave cavity 21 for being sleeved over the moving conductive rod 1. Two side threaded holes 22 are symmetrically provided on the side wall of the concave cavity 21, and an end threaded hole 23 is provided at the center of the other end; the connecting nail 3 is stepped, and is divided into three parts from large to small: a nail cap 31, a threaded rod section 32, and a straight rod section 33. The threaded rod section 32 is provided with an external thread that matches the threaded hole 22 on the upper side of the transition sleeve 2, and the straight rod section 33 is clearance-matched with the connecting hole 11 on the moving conductive rod 1.
[0021] Preferably, the outer peripheral surface of the transition sleeve 2 is provided with a knurled pattern to increase the friction force of the outer periphery of the transition sleeve 2 and facilitate holding; the knurled pattern can be a twill pattern or a mesh pattern.
[0022] Preferably, the depth of the connecting hole 11 is 3 mm, and the thickness of the side wall of the concave cavity 21 of the transition sleeve 2 is 5 mm.
[0023] During use, the transition sleeve 2 is placed on the movable conductive rod 1, and the connecting pins 3 are screwed into the two side threaded holes 22 of the transition sleeve 2. The straight rod section 33 is inserted into the connecting hole 22 of the movable conductive rod 1 to secure the transition sleeve 2 to the movable conductive rod 1. After the transition sleeve 2 is installed, the vacuum interrupter can be connected to the end threaded hole 23 of the transition sleeve 2 using conventional connecting fixtures. Pulling the transition sleeve 2 can drive the movable conductive rod 1 to complete the contact opening distance.
[0024] The vacuum interrupter opening and aging tooling of the utility model is adapted to be switched via a transition sleeve, and can be used to perform aging inspection on a vacuum interrupter without a central threaded hole at the end of a movable conductive rod using the existing opening tooling, and has a simple structure and a short processing cycle.
[0025] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.
Claims
1. A special vacuum interrupter opening and aging tool, characterized by: The vacuum arc extinguishing chamber comprises a moving conductive rod (1) and a moving end cover plate, wherein the end of the moving conductive rod (1) has no central threaded hole, and two connecting holes (11) are symmetrically provided on the side wall of one end of the moving conductive rod (1) close to the moving end cover plate; the aging tool comprises a transition sleeve (2) and a connecting nail (3), wherein one end of the transition sleeve (2) is provided with a concave cavity (21) for being sleeved on the moving conductive rod (1), and two side threaded holes (22) are symmetrically provided on the side wall of the concave cavity, and an end threaded hole (23) is provided at the center of the other end; the connecting nail (3) is in a step shape, and is divided into three parts from large to small, namely, a nail cap (31), a threaded rod section (32), and a straight rod section (33); the straight rod section (33) of the connecting nail (3) passes through the transition sleeve (2) and is clearance-matched with the connecting hole (11) on the moving conductive rod (1), and the threaded rod section (32) is provided with an external thread adapted to the threaded hole (22) on the upper side of the transition sleeve (2).
2. The special vacuum interrupter opening and aging tool according to claim 1 is characterized in that: The depth of the connecting hole (11) is 3 mm, and the thickness of the concave cavity side wall of the transition sleeve (2) is 5 mm.
3. The special vacuum interrupter opening and aging tool according to claim 1 is characterized in that: The outer peripheral surface of the transition sleeve (2) is provided with a knurling pattern.
4. The special vacuum interrupter opening and aging tool according to claim 3 is characterized in that: The knurling pattern is a twill pattern.
5. The special vacuum interrupter opening and aging tool according to claim 3 is characterized in that: The knurling pattern is a mesh pattern.