Anti-loose locking structure for fracture distance of arc extinguish chamber of pole-mounted circuit breaker

Abstract

The utility model relates to the field of installation and adjustment of circuit breakers, in particular to an anti-loose locking structure for the fracture distance of an arc extinguish chamber of a pole-mounted circuit breaker, which comprises a locking disc, the locking disc is fixedly arranged on the outer edge of a screw rod, the locking disc is positioned below a rotating seat, a plurality of through holes are formed in the locking disc, and a screw hole coaxial with at least one through hole is formed in the rotating seat. According to the anti-loosening locking structure for the fracture distance of the arc extinguish chamber of the pole-mounted circuit breaker, through the arrangement of the locking disc, after the rotation of the screw rod is completed, the screw rod and the rotating seat are locked through the locking disc, so that the screw rod can not rotate any more, and the anti-loosening of threads is completed.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker installation and adjustment, specifically to a locking structure for preventing loosening of the arc-extinguishing chamber distance of a pole-mounted circuit breaker. Background Technology

[0002] Outdoor pole-mounted vacuum circuit breakers are outdoor high-voltage power distribution equipment, mainly used for breaking and closing load current, overload current and short-circuit current in power systems. They are suitable for protection and control in substations and industrial and mining enterprise power distribution systems, and are even more suitable for urban and rural power grid construction and renovation and places with frequent operation.

[0003] Chinese Patent Application No. CN202020848303.X, Patent Title: A Pole-Mounted Circuit Breaker, discloses the specific position and structure of bolt 4 on the pole-mounted circuit breaker. This structure allows adjustment of the bolt's height without disassembling the main shaft. However, after adjustment, the bolt itself rotates during vibration, causing it to vibrate and drop. This change in bolt height affects the closing and opening speeds. Therefore, a locking structure to prevent loosening of the arc-extinguishing chamber's contact distance in the pole-mounted circuit breaker is needed. This structure should lock the bolt in place after adjustment to prevent it from rotating and loosening, thus preventing the bolt from dropping. Utility Model Content

[0004] The purpose of this utility model is to provide a locking structure for preventing loosening of the arc-extinguishing chamber distance of a pole-mounted circuit breaker.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A locking structure for preventing loosening of the arc-extinguishing chamber of a pole-mounted circuit breaker is provided, including a locking disc, which is fixedly installed on the outer edge of the screw and located below the rotating base. The locking disc has multiple through holes, and the rotating base has at least one screw hole coaxial with one of the through holes. A bayonet is provided at the bottom of the screw.

[0007] Furthermore, there are four through holes and two screw holes, with the two screw holes being coaxially arranged with the two through holes that are symmetrically set.

[0008] Furthermore, one side of the locking disc fits into the rotating base.

[0009] Furthermore, the locking disc is welded to the screw.

[0010] Furthermore, rotating shafts are fixedly installed on both sides of the rotating base. The two rotating shafts are respectively inserted into the waist-shaped holes of the base. A rotating sleeve is fitted on the outer edge of the rotating shaft, and the outer edge of the rotating sleeve contacts the inner edge of the waist-shaped hole of the base.

[0011] The beneficial effects of this utility model are as follows: The anti-loosening locking structure of the arc-extinguishing chamber of the pole-mounted circuit breaker, by setting a locking disc, locks the screw and the rotating seat together after the screw has rotated, so that the screw can no longer rotate, thus completing the anti-loosening of the thread. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.

[0013] Figure 1 This is a top view of the installation of this utility model;

[0014] Figure 2 This is a side view of the installation of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 4 This is an exploded three-dimensional structural diagram of the present invention;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the rotary seat;

[0018] In the diagram: 1. Screw; 1a. Bayonet; 2. Rotary seat; 2a. Rotary shaft; 2b. Screw hole; 3. Rotary sleeve; 4. Locking disc; 5. Base. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0021] Reference Figures 1 to 5The pole-mounted circuit breaker arc-extinguishing chamber anti-loosening locking structure shown includes a locking disc 4, which is fixedly installed on the outer edge of the screw 1 and located below the rotating base 2. The locking disc 4 has multiple through holes, and the rotating base 2 has at least one threaded hole coaxial with one of the through holes. A retaining clip 1a is provided at the bottom of the screw 1. When the height of the screw 1 needs to be adjusted, a worker can use a screwdriver to engage with the retaining clip 1a, and then rotate the screw 1 by rotating the screwdriver. During rotation, the height of the screw 1 will not change, while the threaded tube connected to the screw 1 will move upwards or downwards. After the position of the screw 1 is adjusted, the screw can be threaded through the through hole of the locking disc 4 and connected to the threaded hole 2b to lock the screw 1 and the rotating base 2, preventing the screw 1 from loosening.

[0022] There are four through holes and two screw holes 2b, with the two screw holes 2b being coaxially arranged with the two symmetrically positioned through holes. By setting two screw holes 2b and four through holes, if the screw holes 2b are not coaxial with the through holes after the screw 1 is adjusted, only a 90-degree rotation is needed. Furthermore, connecting two screws simultaneously to the two screw holes 2b provides a better fixing effect.

[0023] One side of the locking disc 4 is in contact with the rotating base 2. Through the contact between the locking disc 4 and the rotating base 2, the locking disc 4 can generate compression when the screw is connected, which can achieve a higher anti-loosening effect.

[0024] The locking disc 4 is welded to the screw 1. When installing the locking disc 4, first assemble the screw 1 and the rotating seat 2, then fit the locking disc 4 onto the screw 1 through the central round hole, and finally weld it to complete the assembly of the locking disc 4.

[0025] Rotary base 2 has two fixed rotating shafts 2a on both sides. Each shaft 2a is inserted into a slotted hole in the base 5. A rotating sleeve 3 is fitted onto the outer edge of each shaft 2a, with the outer edge of the sleeve 3 contacting the inner edge of the slotted hole in the base 5. By using the rotating sleeve 3, wear between the rotating shaft 2a and the base 5 is prevented, extending the service life of the rotary base 2. This is primarily because the rotary base 2, screw 1, and locking disc 4 form a non-removable structure, making replacement difficult; therefore, the rotating sleeve 3 is necessary to extend their lifespan.

[0026] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A locking structure for preventing the loosening of the arc-extinguishing gap distance of a pole-mounted circuit breaker, characterized in that, The locking disc (4) is fixedly installed on the outer edge of the screw rod (1), is located below the rotating seat (2), is provided with a plurality of through holes, the rotating seat (2) is provided with a screw hole coaxial with at least one through hole, and the bottom of the screw rod (1) is provided with a bayonet (1a).

2. The arc-chute gap distance anti-loosening locking structure of a pole-mounted circuit breaker according to claim 1, characterized in that, The through holes are four, the screw hole (2b) is two, and the two screw holes (2b) are coaxially arranged with the two symmetrical through holes.

3. The arc chute distance-to-metal locking structure of the pole-mounted circuit breaker according to claim 1, wherein, One side of the locking disc (4) is attached to the rotating seat (2).

4. The arc chute distance-to-metal lockout structure of a pole-mounted circuit breaker of claim 1, wherein, The locking disc (4) is welded between the screw rod (1).

5. The arc chute distance-to-metal lockout structure of claim 1, wherein: Both sides of the rotating seat (2) are fixedly provided with rotating shafts (2a), the two rotating shafts (2a) are clamped into the waist-shaped holes of the base (5), the outer edge of the rotating shaft (2a) is sleeved with a rotating sleeve (3), and the outer edge of the rotating sleeve (3) is in contact with the inner edge of the waist-shaped hole of the base (5).

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