Grading shield device for tulip contact
By using the design of a pressure equalization cover device in the plum blossom contacts, and using structures such as movable grooves, telescopic springs and limit inserts, the problem of the elasticity of the annular spring at high temperatures is solved, and the service life and reliability of the plum blossom contacts are improved.
Patent Information
- Application Number
- CN202422384861.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The elasticity of the ring spring in the existing plum blossom contacts is weakened under high temperature environment, resulting in the inability to effectively limit the contacts, affecting the service life and reliability of the plum blossom contacts.
The pressure equalization cover device is adopted. By setting a movable groove and telescopic spring connecting seat, slider and slide groove on the inside of the pressure equalization cover half body, the design ensures that the contact piece body does not fall off when it expands, and is fixed by a limiting insert and fixing screws to avoid the use of an annular spring.
It improves the service life and reliability of the plum blossom contacts, avoids use failures caused by spring elastic force failure, and ensures that the main body of the contact piece does not fall off during expansion.
Smart Images
Figure CN223155836U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plum blossom contacts, in particular to a voltage equalizing cover device for plum blossom contacts. Background Art
[0002] High-voltage circuit breakers play a role in control and protection in the power system. Plum blossom contacts are the main power transmission components in high-voltage circuit breakers. Existing plum blossom contacts include a support frame, several plum blossom contact pieces, and several springs. The support frame is cylindrical, and the springs are arranged along the axial direction of the support frame on the outer periphery of the plum blossom contact pieces arranged in a ring. The ring-shaped spring knocks the moving contact pieces together in a ring, and the contact between the moving and static contact pieces is realized by relying on the elastic force of the ring-shaped spring. The ring-shaped spring also increases the conductive area. The higher current causes the ring-shaped spring to heat up. In an environment with too high a temperature, the ring-shaped spring undergoes annealing, the elasticity of the spring weakens, and there is no toughness, so that the spring can no longer play a role in restricting the contact pieces, resulting in the unusability of the plum blossom contact pieces.
[0003] Therefore, a voltage equalizing cover device for plum blossom contacts is specifically proposed. Content of the Utility Model
[0004] The purpose of the utility model is to provide a voltage equalizing cover device for plum blossom contacts to solve the problems raised in the above background art. To achieve the above purpose, the utility model provides the following technical solutions: A voltage equalizing cover device for plum blossom contacts includes a voltage equalizing cover half body and a contact skeleton. A plurality of activity slots are equidistantly opened on the inner side of the voltage equalizing cover half body. A telescopic spring is installed inside the activity slot. One end of the telescopic spring is installed with a connecting seat. A chute is respectively opened on both sides inside the activity slot. A slider is respectively installed on both sides of the connecting seat. Two limiting slots are opened on one side of the connecting seat. A plurality of contact piece bodies are equidistantly installed on the outer side of the contact skeleton.
[0005] Preferably, a limiting jack is opened inside one side of the voltage equalizing cover half body, and a limiting plug is installed on one side of the voltage equalizing cover half body.
[0006] Preferably, the limiting jack and the limiting plug are installed in cooperation, and a fixing hole is opened inside the limiting plug.
[0007] Preferably, a hidden slot is opened at one end of the voltage equalizing cover half body, and a fixing screw is connected inside the hidden slot by a thread.
[0008] Preferably, a plurality of embedding slots are equidistantly opened on the outer side of the contact skeleton, and two contact piece bodies are respectively installed inside the embedding slots.
[0009] Preferably, a rubber anti-slip sheet is respectively installed on both sides inside the limiting slot, and the rubber anti-slip sheet is installed in cooperation with the contact piece body.
[0010] Compared with the prior art, the utility model provides a grading cover device for a plum blossom contact, which has the following beneficial effects:
[0011] By providing a grading cover half body, a contact piece main body, a connecting seat and a sliding groove, when one end of the contact piece main body is expanded, the contact piece main body will drive the whole connecting seat to move inside the moving groove along the opening direction of the sliding groove, so as to ensure that one end of the contact piece main body can be normally expanded, and the situation that the contact piece main body falls off during the expansion process will not occur. By restricting a plurality of contact piece main bodies installed on one side of the contact skeleton through two grading cover half bodies, the restricting effect on the contact piece main body can be ensured on the premise of not affecting the normal installation and use of the plum blossom contact, and the way of using an annular spring as the restricting means for the contact piece main body is abandoned, thus avoiding the situation that the plum blossom contact cannot be used due to the elastic failure of the spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic structural view of the main body of the utility model;
[0013] Figure 2 is a top view structural view of the grading cover half body of the utility model;
[0014] Figure 3 is the utility model Figure 1 The enlarged structural view at A in;
[0015] Figure 4 is the utility model Figure 1 The enlarged structural view at B in.
[0016] In the figure: 1, grading cover half body; 2, limit jack; 3, fixing hole; 4, contact piece main body; 5, contact skeleton; 6, hidden groove; 7, limit insert block; 8, connecting seat; 9, limit groove; 10, rubber anti-slip sheet; 11, slider; 12, sliding groove; 13, telescopic spring; 14, moving groove; 15, fixing screw; 16, embedding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] Embodiment 1: A plurality of movable grooves 14 are equidistantly arranged inside the half-equalizing cover 1. A telescopic spring 13 is installed inside the movable groove 14. One end of the telescopic spring 13 is installed with a connecting seat 8. One chute 12 is respectively arranged on both sides inside the movable groove 14. One slider 11 is respectively installed on both sides of the connecting seat 8. Two limiting grooves 9 are arranged on one side of the connecting seat 8. A plurality of contact piece bodies 4 are equidistantly installed on the outer side of the contact head framework 5.
[0019] Specifically, as Figure 1 and Figure 3 shown, during installation, a plurality of contact piece bodies 4 are equidistantly installed on the outer side of the contact head framework 5. Subsequently, the two half-equalizing covers 1 are installed on the outer side of the contact head framework 5, and the plurality of contact piece bodies 4 are limited between the two half-equalizing covers 1 and the contact head framework 5. Subsequently, the two half-equalizing covers 1 are fixed, and thus the contact piece bodies 4 can be restricted. Since a plurality of movable grooves 14 are equidistantly arranged inside the half-equalizing cover 1, and a connecting seat 8 is installed inside the movable groove 14 through a telescopic spring 13, and two limiting grooves 9 are arranged on one side of the connecting seat 8, therefore, one side of the contact piece body 4 can be fixed inside the limiting groove 9. Therefore, when the plum blossom contact head is installed, one end of the contact piece body 4 is expanded, and the contact piece body 4 will drive the connecting seat 8 to slide inside the movable groove 14. Since one slider 11 is respectively installed on both sides of the connecting seat 8, and one chute 12 is respectively arranged on both sides inside the movable groove 14, and the two sliders 11 are respectively slidably installed inside the chutes 12, therefore, when one end of the contact piece body 4 is expanded, the contact piece body 4 will drive the entire connecting seat 8 to move inside the movable groove 14 along the opening direction of the chute 12, so as to ensure that one end of the contact piece body 4 can be normally expanded, and the situation that the contact piece body 4 falls off during the expansion process will not occur. By restricting the plurality of contact piece bodies 4 installed on one side of the contact head framework 5 through the two half-equalizing covers 1, the restricting effect on the contact piece bodies 4 can be ensured without affecting the normal installation and use of the plum blossom contact head, and the method of using an annular spring to restrict the contact piece bodies 4 is abandoned, thereby avoiding the situation that the plum blossom contact head cannot be used due to the elastic failure of the spring. The service life and use effect of the plum blossom contact head are improved in this utility model.
[0020] Embodiment 2: A limiting jack 2 is arranged inside one side of the half-equalizing cover 1, and a limiting plug 7 is installed on one side of the half-equalizing cover 1. The limiting jack 2 and the limiting plug 7 are installed in cooperation, and a fixing hole 3 is arranged inside the limiting plug 7. A hidden groove 6 is arranged at one end of the half-equalizing cover 1, and a fixing screw 15 is connected inside the hidden groove 6 through threads. A plurality of embedding grooves 16 are equidistantly arranged on the outer side of the contact head framework 5, and two contact piece bodies 4 are respectively installed inside the embedding grooves 16. One rubber anti-slip sheet 10 is respectively installed on both sides inside the limiting groove 9, and the rubber anti-slip sheet 10 and the contact piece body 4 are installed in cooperation.
[0021] Specifically, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, when fixing the two equalizing cover halves 1, the limit insertion block 7 installed at one end of the equalizing cover half 1 can be inserted into the limit insertion hole 2 opened on one side of the other equalizing cover half 1. Subsequently, the fixing screw 15 installed inside the hidden groove 6 through threaded connection can be inserted into the fixing hole 3 to fix the two equalizing cover halves 1, ensuring that the installation between the two equalizing cover halves 1 is very firm and avoiding the situation of scattering during use. Since a rubber anti-slip sheet 10 is installed on each side inside the limit groove 9, when one side of the contact piece body 4 is inserted into the limit groove 9, both sides of the contact piece body 4 will come into contact with the rubber anti-slip sheet 10, thereby increasing the friction force between the inner wall of the limit groove 9 and the contact piece body 4 and avoiding the situation of the contact piece body 4 slipping out of the limit groove 9. And through the rubber anti-slip sheet 10, an insulating connection can be made with the contact piece body 4 to ensure the use safety.
[0022] Working principle: During use, a plurality of contact piece bodies 4 are equidistantly installed on the outer side of the contact skeleton 5. Subsequently, two equalizing cover half bodies 1 are installed on the outer side of the contact skeleton 5, such that one side of each of the two contact piece bodies 4 installed inside the embedding groove 16 is respectively inserted into the inside of the limiting groove 9. When fixing the two equalizing cover half bodies 1, the limiting insertion block 7 installed at one end of the equalizing cover half body 1 can be inserted into the limiting insertion hole 2 opened on one side of the other equalizing cover half body 1. Subsequently, the fixing screw 15 installed inside the hidden groove 6 through threaded connection is inserted into the fixing hole 3 to fix the two equalizing cover half bodies 1, ensuring that the installation between the two equalizing cover half bodies 1 is very firm and preventing scattering during use. Since a plurality of moving grooves 14 are equidistantly opened on the inner side of the equalizing cover half body 1, and a connecting seat 8 is installed inside the moving groove 14 through a telescopic spring 13, and two limiting grooves 9 are opened on one side of the connecting seat 8, therefore, one side of the contact piece body 4 can be fixed inside the limiting groove 9. Thus, when the plum blossom contact is installed and one end of the contact piece body 4 is expanded, the contact piece body 4 will drive the connecting seat 8 to slide inside the moving groove 14. Since a slider 11 is installed on each of the two sides of the connecting seat 8, and a sliding groove 12 is opened on each of the two sides inside the moving groove 14, and the two sliders 11 are respectively slidably installed inside the sliding grooves 12, therefore, when one end of the contact piece body 4 is expanded, the contact piece body 4 will drive the entire connecting seat 8 to move inside the moving groove 14 along the opening direction of the sliding groove 12, thereby ensuring that one end of the contact piece body 4 can be normally expanded and preventing the contact piece body 4 from falling off during the expansion process. By restricting the plurality of contact piece bodies 4 installed on one side of the contact skeleton 5 through the two equalizing cover half bodies 1, the restricting effect on the contact piece body 4 can be ensured without affecting the normal installation and use of the plum blossom contact, abandoning the method of using an annular spring to restrict the contact piece body 4, thereby avoiding the situation where the plum blossom contact cannot be used due to the elastic failure of the spring.
[0023] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any perspective, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
Claims
1. A voltage equalizing cover device for a plum blossom contact, comprising a voltage equalizing cover half body (1) and a contact skeleton (5), characterized in that: A plurality of movable grooves (14) are equidistantly arranged on the inner side of the equalizing cover half body (1). A telescopic spring (13) is installed inside the movable groove (14). One end of the telescopic spring (13) is installed with a connecting seat (8). A chute (12) is respectively arranged on both sides inside the movable groove (14). A slider (11) is respectively installed on both sides of the connecting seat (8). Two limiting grooves (9) are arranged on one side of the connecting seat (8). A plurality of contact piece bodies (4) are equidistantly installed on the outer side of the contact head skeleton (5).
2. The grading cover device for a plum blossom contact according to claim 1, characterized in that: A limiting jack (2) is arranged inside one side of the equalizing cover half body (1), and a limiting plug (7) is installed on one side of the equalizing cover half body (1).
3. The grading cover device for a plum blossom contact according to claim 2, characterized in that: The limiting jack (2) and the limiting plug (7) are cooperatively installed, and a fixing hole (3) is arranged inside the limiting plug (7).
4. The grading cover device for a plum blossom contact according to claim 3, characterized in that: A hidden groove (6) is arranged at one end of the equalizing cover half body (1), and a fixing screw (15) is connected inside the hidden groove (6) by means of threads.
5. The grading cover device for a plum blossom contact according to claim 1, characterized in that: A plurality of embedding grooves (16) are equidistantly arranged on the outer side of the contact head skeleton (5), and two contact piece bodies (4) are respectively installed inside the embedding grooves (16).
6. The grading cover device for a plum blossom contact according to claim 1, characterized in that: A rubber anti-slip sheet (10) is respectively installed on both sides inside the limiting groove (9), and the rubber anti-slip sheet (10) and the contact piece body (4) are cooperatively installed with each other.