High-strength vacuum tube for vacuum circuit breaker

Abstract

The utility model belongs to the field of vacuum circuit breaker, specifically is a kind of high-strength vacuum tube for vacuum circuit breaker, including vacuum tube main part, the inside fixed mounting of vacuum tube main part has shielding cylinder, the top of vacuum tube main part is fixedly covered and is equipped with static end electrically conductive rod, and the one end of static end electrically conductive rod is fixedly connected with static end contact;By setting adjusting mechanism, when needing the initial pressure of first spring, through operating lever to pull the tooth, make the tooth and the tooth groove separate, subsequently through operating lever to rotate the rotating lever, make the rotating lever drive connecting sleeve rotate by limiting block and limit slot, connecting sleeve drives screw rod to rotate, to make screw rod drive sliding block to slide in the inside of sliding slot, reach the effect of adjusting the position of top block, to adjust the distance between top block and dynamic end contact, further reach the effect of adjusting the initial pressure of first spring, make the initial pressure of first spring more convenient and fast when adjusting, avoid the normal use of vacuum circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of vacuum circuit breakers, specifically a high-strength vacuum tube for vacuum circuit breakers. Background Technology

[0002] A vacuum circuit breaker is a high-voltage switchgear that uses vacuum as the arc-extinguishing medium. It extinguishes the electric arc by rapidly separating the contacts in a vacuum to generate a longitudinal magnetic field. It features no risk of explosion, environmental friendliness, simple maintenance, and long service life. Its core component is a high-strength vacuum tube, which is manufactured through precision assembly, vacuum treatment, and sealing processes. It can withstand high voltage and high current and is widely used in power systems and industrial and mining scenarios.

[0003] Currently, in existing vacuum circuit breakers using high-strength vacuum tubes, the spring mechanism may cause the contacts to bounce when closing or rebound when opening, affecting equipment lifespan and power grid stability. To solve this problem, the initial pressure of the contact springs needs to be adjusted and the mechanical transmission mechanism optimized. However, adjusting the initial pressure of the contact springs in existing high-strength vacuum tubes for vacuum circuit breakers is extremely inconvenient, requiring a significant amount of time and affecting the normal operation of the vacuum circuit breaker. Therefore, a new high-strength vacuum tube for vacuum circuit breakers is proposed to address the above problems. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, the high-strength vacuum tube used in the vacuum circuit breaker is extremely inconvenient to adjust when adjusting the initial pressure of the contact spring, which requires a lot of time for adjustment and affects the normal use of the vacuum circuit breaker. This utility model proposes a high-strength vacuum tube for vacuum circuit breakers.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a high-strength vacuum tube for a vacuum circuit breaker, comprising a vacuum tube body, a shielding cylinder fixedly installed inside the vacuum tube body, a stationary conductive rod fixedly sleeved on the top of the vacuum tube body, a stationary contact fixedly connected to one end of the stationary conductive rod, a moving conductive rod slidably sleeved on the bottom of the vacuum tube body, a moving contact fixedly connected to one end of the moving conductive rod, the moving contact cooperating with the stationary contact, a top block slidably sleeved on the surface of the moving conductive rod, a first spring slidably sleeved on the surface of the moving conductive rod, one end of the first spring fixedly connected to the inner wall of the vacuum tube body, the other end of the first spring fixedly connected to the bottom of the top block, and an adjustment mechanism provided inside the moving conductive rod, the adjustment mechanism cooperating with the top block; The adjustment mechanism includes a slide groove and an operating rod. The slide groove is formed on the surface of the moving end conductive rod. A screw is rotatably connected inside the slide groove. A slider is fixedly installed inside the top block. The slider is slidably connected inside the slide groove. The inner cavity of the slider is threadedly connected to the surface of the screw. One end of the screw extends into the interior of the moving end conductive rod. A connecting sleeve is fixedly connected to one end of the screw. The connecting sleeve is rotatably fitted inside the moving end conductive rod. A rotating rod is slidably fitted inside the connecting sleeve. One end of the rotating rod passes through the connecting sleeve. A locking tooth is fixedly installed at one end of the rotating rod. A tooth groove is formed on the inner wall of the moving end conductive rod. The locking tooth cooperates with the tooth groove.

[0006] Preferably, a positioning block is fixedly installed at the other end of the screw, and the positioning block is rotatably connected inside the moving end contact.

[0007] Preferably, a support block is fixedly installed at the other end of the rotating rod, and a second spring is slidably sleeved on the surface of the rotating rod. One end of the second spring is fixedly connected to the support block, and the other end of the second spring is fixedly connected to the inner wall of the connecting sleeve.

[0008] Preferably, a limiting block is fixedly installed on the surface of the rotating rod, a limiting groove is formed on the inner wall of the connecting sleeve, and the limiting block is slidably connected inside the limiting groove.

[0009] Preferably, an operating rod is slidably sleeved inside the moving end conductive rod, and a connecting block is fixedly installed at one end of the operating rod. A connecting groove is opened inside the locking tooth, and the connecting block is used in conjunction with the connecting groove.

[0010] Preferably, the bottom of the locking tooth has an opening that communicates with the connecting groove and is used in conjunction with the connecting block.

[0011] Preferably, the inner wall of the moving end conductive rod is provided with a guide groove, which is used in conjunction with the connecting block.

[0012] The advantages of this utility model are: This invention features an adjustment mechanism. When the initial pressure of the first spring needs to be adjusted, the operating rod pulls the retaining teeth to separate them from the tooth groove. Then, the operating rod rotates the rotating rod, causing the connecting sleeve to rotate via the limiting block and limiting groove. The connecting sleeve then rotates the screw, causing the slider to slide inside the sliding groove, thus adjusting the position of the top block and the distance between the top block and the moving end contact. This, in turn, adjusts the initial pressure of the first spring, making the adjustment of the initial pressure more convenient and quick, saving time and effort, and avoiding affecting the normal operation of the vacuum circuit breaker. Furthermore, the operating rod can be removed after adjustment to prevent it from affecting the closing and opening of the vacuum circuit breaker. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the high-strength vacuum tube structure for the vacuum circuit breaker of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the adjustment mechanism structure of this utility model; Figure 4 This is a schematic diagram of the rotating rod structure of this utility model.

[0015] In the diagram: 1. Vacuum tube body; 101. Shielding cylinder; 102. Stationary end conductive rod; 103. Stationary end contact; 104. Moving end conductive rod; 105. Top block; 106. Moving end contact; 107. First spring; 2. Adjustment mechanism; 21. Slide groove; 22. Screw; 2201. Positioning block; 23. Sliding block; 24. Connecting sleeve; 25. Rotating rod; 2501. Clamping tooth; 2502. Tooth groove; 2503. Support block; 2504. Second spring; 2505. Limiting block; 2506. Limiting groove; 26. Operating rod; 2601. Connecting block; 2602. Connecting groove; 2603. Opening; 2604. Guide groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail. This application discloses a high-strength vacuum tube for a vacuum circuit breaker. (Refer to...) Figure 1 , Figure 2 and Figure 3A high-strength vacuum tube for a vacuum circuit breaker includes a vacuum tube body 1. A shielding cylinder 101 is fixedly installed inside the vacuum tube body 1. A stationary conductive rod 102 is fixedly sleeved on the top of the vacuum tube body 1. A stationary contact 103 is fixedly connected to one end of the stationary conductive rod 102. A moving conductive rod 104 is slidably sleeved on the bottom of the vacuum tube body 1. A moving contact 106 is fixedly connected to one end of the moving conductive rod 104. The moving contact 106 cooperates with the stationary contact 103. A top block 105 is slidably sleeved on the surface of the moving conductive rod 104. A first spring 107 is slidably sleeved on the surface of the moving conductive rod 104. One end of the first spring 107 is fixedly connected to the inner wall of the vacuum tube body 1. The other end of the first spring 107 is fixedly connected to the bottom of the top block 105. An adjustment mechanism 2 is provided inside the moving conductive rod 104. The adjustment mechanism 2 cooperates with the top block 105. The adjustment mechanism 2 includes a slide groove 21 and an operating rod 26. The slide groove 21 is formed on the surface of the moving end conductive rod 104. A screw 22 is rotatably connected inside the slide groove 21. A slider 23 is fixedly installed inside the top block 105. The slider 23 is slidably connected inside the slide groove 21. The inner cavity of the slider 23 is threadedly connected to the surface of the screw 22. One end of the screw 22 extends into the interior of the moving end conductive rod 104. A connecting sleeve 24 is fixedly connected to one end of the screw 22. The connecting sleeve 24 is rotatably fitted inside the moving end conductive rod 104. A rotating rod 25 is slidably fitted inside the connecting sleeve 24. One end of the rotating rod 25 passes through the connecting sleeve 24. A locking tooth 2501 is fixedly installed at one end of the rotating rod 25. A toothed groove 2502 is formed on the inner wall of the moving end conductive rod 104. The locking tooth 2501 and the toothed groove 2502 are used in conjunction. When the initial pressure of the first spring 107 needs to be adjusted, pull the rotating rod 25 to separate the retaining tooth 2501 from the tooth groove 2502. Then rotate the rotating rod 25 so that the rotating rod 25 drives the screw 22 to rotate through the connecting sleeve 24. This causes the screw 22 to drive the slider 23 to slide inside the slide groove 21, thereby adjusting the position of the top block 105 and adjusting the distance between the top block 105 and the moving end contact 106. This, in turn, adjusts the initial pressure of the first spring 107, making the adjustment of the initial pressure of the first spring 107 more convenient and quick, saving time and effort, and avoiding affecting the normal use of the vacuum circuit breaker.

[0018] Reference Figure 3 A positioning block 2201 is fixedly installed at the other end of the screw 22. The positioning block 2201 is rotatably connected to the inside of the moving end contact 106. By rotatably connecting the positioning block 2201 to the inside of the moving end contact 106, the position of the screw 22 can be effectively stabilized, and the position of the slider 23 and the top block 105 can be avoided due to the screw 22 shifting.

[0019] Reference Figure 3 and Figure 4A support block 2503 is fixedly installed at the other end of the rotating rod 25. A second spring 2504 is slidably sleeved on the surface of the rotating rod 25. One end of the second spring 2504 is fixedly connected to the support block 2503, and the other end of the second spring 2504 is fixedly connected to the inner wall of the connecting sleeve 24. The second spring 2504 can support the rotating rod 25 through the support block 2503, so that the locking teeth 2501 are tightly engaged in the inside of the tooth groove 2502. The rotating rod 25 is positioned by the locking teeth 2501 and the tooth groove 2502, and then the connecting sleeve 24 and the screw 22 are positioned, so as to prevent the screw 22 from rotating by mistake and affecting the position of the top block 105.

[0020] Reference Figure 3 and Figure 4 A limiting block 2505 is fixedly installed on the surface of the rotating rod 25, and a limiting groove 2506 is opened on the inner wall of the connecting sleeve 24. The limiting block 2505 is slidably connected inside the limiting groove 2506. By making the limiting block 2505 slidably connected inside the limiting groove 2506, when the rotating rod 25 is rotated, the rotating rod 25 can drive the connecting sleeve 24 to rotate through the limiting block 2505 and the limiting groove 2506, so as to achieve the function of rotating the connecting sleeve 24 and the screw 22.

[0021] Reference Figure 3 and Figure 4 An operating rod 26 is slidably fitted inside the moving end conductive rod 104. A connecting block 2601 is fixedly installed at one end of the operating rod 26. A connecting groove 2602 is formed inside the retaining tooth 2501, and the connecting block 2601 cooperates with the connecting groove 2602. An opening 2603 is formed at the bottom of the retaining tooth 2501, and the opening 2603 communicates with the connecting groove 2602 and cooperates with the connecting block 2601. A guide groove 2604 is formed on the inner wall of the moving end conductive rod 104, and the guide groove 2604 cooperates with the connecting block 2601. When it is necessary to rotate the rotating rod 25, the operating rod 26 is inserted into the moving end conductive rod 104 and passes through the guide groove 2604. To prevent the connecting block 2601 from interfering with the insertion of the operating rod 26, the connecting block 2601 is then inserted into the connecting groove 2602 through the opening 2603. The operating rod 26 is then rotated to misalign the connecting block 2601 with the opening 2603. The operating rod 26 is then pulled to move the locking tooth 2501, causing it to separate from the tooth groove 2502. The operating rod 26 is then rotated, causing the locking tooth 2501 to rotate through the connecting block 2601 and the connecting groove 2602. This allows the locking tooth 2501 to rotate simultaneously with the rotating rod 25, and also facilitates the removal of the operating rod 26, thus preventing it from affecting the closing and opening of the vacuum circuit breaker.

[0022] Working principle: When the initial pressure of the first spring 107 is required, the operating rod 26 is inserted into the interior of the moving end conductive rod 104. The guide groove 2604 prevents the connecting block 2601 from interfering with the insertion of the operating rod 26. Then, the connecting block 2601 is inserted into the connecting groove 2602 through the opening 2603. The operating rod 26 is rotated to misalign the connecting block 2601 with the opening 2603. The operating rod 26 is then pulled to move the locking tooth 2501, separating it from the tooth groove 2502. The operating rod 26 is then rotated again, causing the locking tooth 2501 to rotate via the connecting block 2601 and the connecting groove 2602. This causes the locking tooth 2501 to rotate simultaneously with the rotating rod 25. The limiting block 2505 and the limiting groove 2506 work together to achieve this. This causes the rotating rod 25 to drive the connecting sleeve 24 to rotate via the limiting block 2505 and the limiting groove 2506. The connecting sleeve 24 drives the screw 22 to rotate simultaneously, and the position of the screw 22 is stabilized by the positioning block 2201, so that the screw 22 drives the slider 23 to slide inside the sliding groove 21, thereby adjusting the position of the top block 105. This adjusts the distance between the top block 105 and the moving end contact 106, thereby adjusting the initial pressure of the first spring 107. This makes the adjustment of the initial pressure of the first spring 107 more convenient and quick, saving time and effort, and avoiding affecting the normal use of the vacuum circuit breaker. After the initial pressure of the first spring 107 is adjusted, the operating rod 26 is removed to avoid the operating rod 26 affecting the closing and opening of the moving end contact 106 and the stationary end contact 103.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-strength vacuum tube for a vacuum circuit breaker, characterized in that: The system includes a vacuum tube body (1), inside which a shielding cylinder (101) is fixedly installed. A stationary conductive rod (102) is fixedly sleeved on the top of the vacuum tube body (1), and a stationary contact (103) is fixedly connected to one end of the stationary conductive rod (102). A moving conductive rod (104) is slidably sleeved on the bottom of the vacuum tube body (1), and a moving contact (106) is fixedly connected to one end of the moving conductive rod (104). The moving contact (106) and the stationary contact (103) are connected to each other. 3) In conjunction with each other, a top block (105) is slidably sleeved on the surface of the moving end conductive rod (104), and a first spring (107) is slidably sleeved on the surface of the moving end conductive rod (104). One end of the first spring (107) is fixedly connected to the inner wall of the vacuum tube body (1), and the other end of the first spring (107) is fixedly connected to the bottom of the top block (105). An adjustment mechanism (2) is provided inside the moving end conductive rod (104), and the adjustment mechanism (2) is used in conjunction with the top block (105). The adjustment mechanism (2) includes a slide groove (21) and an operating rod (26). The slide groove (21) is formed on the surface of the moving end conductive rod (104). A screw (22) is rotatably connected inside the slide groove (21). A slider (23) is fixedly installed inside the top block (105). The slider (23) is slidably connected inside the slide groove (21). The inner cavity of the slider (23) is threadedly connected to the surface of the screw (22). One end of the screw (22) extends into the interior of the moving end conductive rod (104). One end of the screw (22) is fixedly connected to a connecting sleeve (24), which is rotatably sleeved inside the moving end conductive rod (104). A rotating rod (25) is slidably sleeved inside the connecting sleeve (24). One end of the rotating rod (25) passes through the connecting sleeve (24), and a locking tooth (2501) is fixedly installed on one end of the rotating rod (25). A tooth groove (2502) is opened on the inner wall of the moving end conductive rod (104), and the locking tooth (2501) and the tooth groove (2502) are used in conjunction.

2. The high-strength vacuum tube for a vacuum circuit breaker according to claim 1, characterized in that: The other end of the screw (22) is fixedly installed with a positioning block (2201), which is rotatably connected inside the moving end contact (106).

3. A high-strength vacuum tube for a vacuum circuit breaker according to claim 1, characterized in that: A support block (2503) is fixedly installed at the other end of the rotating rod (25), and a second spring (2504) is slidably sleeved on the surface of the rotating rod (25). One end of the second spring (2504) is fixedly connected to the support block (2503), and the other end of the second spring (2504) is fixedly connected to the inner wall of the connecting sleeve (24).

4. A high-strength vacuum tube for a vacuum circuit breaker according to claim 1, characterized in that: A limiting block (2505) is fixedly installed on the surface of the rotating rod (25), and a limiting groove (2506) is opened on the inner wall of the connecting sleeve (24). The limiting block (2505) is slidably connected inside the limiting groove (2506).

5. A high-strength vacuum tube for a vacuum circuit breaker according to claim 1, characterized in that: An operating rod (26) is slidably sleeved inside the moving end conductive rod (104). A connecting block (2601) is fixedly installed at one end of the operating rod (26). A connecting groove (2602) is opened inside the locking tooth (2501). The connecting block (2601) and the connecting groove (2602) are used in conjunction.

6. A high-strength vacuum tube for a vacuum circuit breaker according to claim 5, characterized in that: The bottom of the tooth (2501) has an opening (2603), which is connected to the connecting groove (2602). The opening (2603) is used in conjunction with the connecting block (2601).

7. A high-strength vacuum tube for a vacuum circuit breaker according to claim 5, characterized in that: The inner wall of the moving end conductive rod (104) is provided with a guide groove (2604), which is used in conjunction with the connecting block (2601).

Images