High-voltage cabinet with positioning self-locking structure

Abstract

The utility model relates to the technical field of electric power engineering, and disclose a high voltage cabinet with positioning self -locking structure, this high voltage cabinet with positioning self -locking structure, including high voltage cabinet body, the hinged installation of cabinet door is got on high voltage cabinet body, the fixed mounting of handle is got on cabinet door, be provided with locking assembly on high voltage cabinet body. This high voltage cabinet with positioning self -locking structure, in order to make the device guarantee the safe operation of high voltage cabinet, through setting up locking assembly, this assembly cooperation tension spring pull straight rod, make the oval plate on straight rod can be needed when carding into the locking plate on cabinet door, the design of slide cylinder and storage groove makes the oval plate can be stored therein when not locking, the long spring on cabinet door pushes round bar, makes rubber block on round bar and oval plate close, the arc design and antiskid strip of rubber block far from round bar one end, increase friction, further fixed oval plate, prevent its slack.

Description

Technical Field

[0001] This utility model relates to the field of power engineering technology, specifically a high-voltage switchgear with a positioning self-locking structure. Background Technology

[0002] In power systems, high-voltage switchgear plays a crucial role in power distribution, control, and protection. High-voltage switchgear with a self-locking positioning structure is designed to further enhance the safety of equipment operation, prevent safety accidents caused by misoperation, and ensure the stable state of internal components during operation and maintenance.

[0003] This type of high-voltage switchgear mainly consists of a cabinet, a positioning and self-locking mechanism, circuit breakers, and disconnect switches. The positioning and self-locking mechanism includes a positioning pin, a latch, and an operating handle. When the operator needs to perform switching operations, they first use the operating handle to pull the positioning pin out of the preset positioning hole to release the locking state before operating the circuit breaker or disconnect switch. After the operation is completed, the positioning pin automatically falls into the corresponding positioning hole, and the latch quickly locks in place to prevent accidental operation.

[0004] However, in actual use, most existing high-voltage cabinets lack further protective measures after locking, such as designs to prevent the locking components from loosening. When the high-voltage cabinet is subjected to vibration or collision, the locking components may loosen, causing the cabinet door to open unexpectedly and endangering personnel safety. In view of this, we propose a high-voltage cabinet with a positioning self-locking structure. Utility Model Content

[0005] The purpose of this invention is to provide a high-voltage switchgear with a self-locking positioning structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-voltage switchgear with a self-locking positioning structure includes a switchgear body, a door hingedly mounted on the switchgear body, a handle fixedly mounted on the door, and a locking component provided on the switchgear body. The locking component includes:

[0008] The mounting cylinder is fixedly installed on the high-voltage cabinet body. One end of a tension spring is rotatably installed inside the mounting cylinder, and one end of a straight rod is fixedly installed on the other end of the tension spring. A sliding cylinder is fixedly installed on the mounting cylinder.

[0009] The sliding cylinder has a storage slot at one end, the straight rod has an elliptical plate fixedly installed at one end, the elliptical plate has a handle fixedly installed at the other end, and a locking plate is fixedly installed on the cabinet door with an elliptical hole.

[0010] A cover plate is snapped onto the locking plate, and a handle is fixedly installed on the cover plate. A sliding groove is provided on the cabinet door. One end of a long spring is fixedly installed on the inside of the cabinet door. One end of a round rod is fixedly installed on the other end of the long spring, and one end of a rubber block is fixedly installed on the other end of the round rod.

[0011] Preferably, the straight rod slides inside the mounting cylinder and the sliding cylinder, the cross-section of the elliptical plate is the same size as the cross-section of the receiving groove, and the cross-section of the elliptical plate is the same size as the cross-section of the elliptical hole.

[0012] Preferably, the long spring is disposed inside the slide groove, the round rod slides inside the slide groove, and the rubber block slides inside the slide groove.

[0013] Preferably, the end of the rubber block away from the round rod is arc-shaped, an anti-slip strip is fixedly installed on the end of the rubber block away from the round rod, and the end of the rubber block away from the round rod is in contact with the elliptical plate.

[0014] Preferably, the cabinet door is provided with a positioning component, the positioning component includes a limiting ring, the limiting ring is fixedly installed on the high voltage cabinet body, the limiting ring is provided with a positioning hole, the cabinet door is provided with a circular groove, one end of a short spring is fixedly installed on the inner side of the cabinet door, and a ball-head positioning rod is fixedly installed on the other end of the short spring.

[0015] Preferably, multiple sets of the positioning hole, circular groove, short spring, and ball-head positioning rod are provided.

[0016] Preferably, the short spring is disposed inside the circular groove, the ball-head positioning rod slides inside the circular groove, and the circular cross-section of the positioning hole is the same size as the circular cross-section of the ball-head positioning rod.

[0017] Compared with the prior art, this utility model provides a high-voltage switchgear with a positioning self-locking structure, which has the following beneficial effects:

[0018] 1. This high-voltage switchgear with a self-locking positioning structure is equipped with a locking component to ensure the safe operation of the switchgear. This component, in conjunction with a tension spring, pulls a straight rod, allowing an elliptical plate on the rod to engage with a locking plate on the cabinet door when needed. The design of the sliding cylinder and storage groove allows the elliptical plate to be stored in them when not locked. A long spring on the cabinet door pushes a round rod, causing a rubber block on the rod to fit against the elliptical plate. The arc-shaped design and anti-slip strip at the end of the rubber block away from the round rod increase friction, further securing the elliptical plate and preventing it from loosening.

[0019] 2. This high-voltage switchgear with a self-locking positioning structure is equipped with a positioning component to improve the safety and reliability of the switchgear. This component works in conjunction with the limiting ring on the switchgear body, which has positioning holes. Short springs push ball-head positioning rods in multiple circular grooves on the switchgear door. When the switchgear door is closed, the ball-head positioning rods are engaged in the positioning holes of the limiting rings by the action of the short springs. The multiple positioning holes and the ball-head positioning rods work together to ensure that the switchgear door is accurately positioned in the closed position. Attached Figure Description

[0020] Figure 1 This is a three-dimensional closed schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a three-dimensional open view of the overall structure of the present invention;

[0022] Figure 3 This is a three-dimensional sectional view of part of the structure of this utility model;

[0023] Figure 4 This utility model Figure 3 Enlarged structural diagram of region A in the middle;

[0024] Figure 5 This is a cross-sectional view of part of the structure of this utility model;

[0025] Figure 6 This utility model Figure 4 Enlarged structural diagram of region B in the middle;

[0026] Figure 7 This utility model Figure 4 Enlarged structural diagram of region C in the middle;

[0027] Figure 8 This is a three-dimensional schematic diagram of the locking component of this utility model.

[0028] In the diagram: 1. High-voltage cabinet body; 2. Cabinet door; 3. Handle; 4. Locking assembly; 41. Mounting cylinder; 42. Tension spring; 43. Straight rod; 44. Slide cylinder; 45. Oval plate; 46. Grip; 47. Locking plate; 48. Oval hole; 49. Cover plate; 410. Grip; 411. Slide groove; 412. Long spring; 413. Round rod; 414. Rubber block; 415. Storage slot; 5. Positioning assembly; 51. Limiting ring; 52. Positioning hole; 53. Round groove; 54. Short spring; 55. Ball head positioning rod. Detailed Implementation

[0029] 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 protection scope of the present utility model.

[0030] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0031] Please see Figure 1 - Figure 8 This utility model provides a technical solution:

[0032] A high-voltage switchgear with a positioning self-locking structure includes a high-voltage switchgear body 1, a cabinet door 2 hinged to the high-voltage switchgear body 1, and a handle 3 fixedly installed on the cabinet door 2.

[0033] In one embodiment of this utility model, a locking component 4 is provided on the high-voltage cabinet body 1. The locking component 4 includes a mounting cylinder 41, which is fixedly mounted on the high-voltage cabinet body 1. One end of a tension spring 42 is rotatably mounted on the inner side of the mounting cylinder 41, and one end of a straight rod 43 is fixedly mounted on the other end of the tension spring 42. A sliding cylinder 44 is fixedly mounted on the mounting cylinder 41, and a storage groove 415 is opened on the other end of the sliding cylinder 44. An elliptical plate 45 is fixedly mounted on the other end of the straight rod 43, and a handle 46 is fixedly mounted on the other end of the elliptical plate 45. A locking plate 47 is fixedly mounted on the cabinet door 2, and an elliptical hole 48 is opened on the locking plate 47. A cover plate 49 is snapped onto the locking plate 47, and a handle 410 is fixedly mounted on the cover plate 49. A sliding groove 411 is opened on the cabinet door 2. 2. A long spring 412 is fixedly installed on one end of the inner side, and a round rod 413 is fixedly installed on the other end of the long spring 412. A rubber block 414 is fixedly installed on the other end of the round rod 413. The straight rod 43 slides inside the mounting cylinder 41 and the sliding cylinder 44. The cross-section of the elliptical plate 45 is the same size as the cross-section of the storage groove 415. The cross-section of the elliptical plate 45 is the same size as the cross-section of the elliptical hole 48. The long spring 412 is set inside the sliding groove 411. The round rod 413 slides inside the sliding groove 411. The rubber block 414 slides inside the sliding groove 411. The end of the rubber block 414 away from the round rod 413 is arc-shaped. An anti-slip strip is fixedly installed on the end of the rubber block 414 away from the round rod 413. The end of the rubber block 414 away from the round rod 413 is in contact with the elliptical plate 45.

[0034] In this embodiment, when preparing to close the high-voltage cabinet door 2, the locking component 4 simultaneously enters the working state. The tension spring 42 inside the mounting cylinder 41 of the high-voltage cabinet body 1 continuously applies tension to the straight rod 43. As the cabinet door 2 approaches the high-voltage cabinet body 1, the operator needs to manually pull the handle 46, causing the handle 46 to move the elliptical plate 45, precisely aligning it with the elliptical hole 48 on the locking plate 47 of the cabinet door 2. When the elliptical plate 45 reaches the appropriate position, the handle 46 is rotated, and the tension spring 42 releases the tension. Due to its elastic contraction force, the elliptical plate 45 is quickly locked, completing the initial locking of the cabinet door 2. After the initial locking is completed, the long spring 412 inside the inner slide groove 411 of the cabinet door 2 takes effect. The long spring 412 continuously applies force to the round rod 413, and the round rod 413 drives the rubber block 414 to approach the elliptical plate 45 until the rubber block 414 is tightly attached to the elliptical plate 45. The end of the rod 413 away from the round rod is designed to be arc-shaped and has anti-slip strips on its surface. This design increases the contact area and friction with the elliptical plate 45. When the elliptical plate 45 is disturbed by the outside and tries to get away from the elliptical hole 48, the friction generated by the rubber block 414 can effectively counteract the interference force, prevent the elliptical plate 45 from loosening, and avoid the cabinet door 2 from being opened due to accidental external force collisions, thereby reducing the risk of personnel accidentally touching high-voltage equipment. When it is necessary to open the high-voltage cabinet door 2, the operator pulls the elliptical plate 45 away from the elliptical hole 48 by holding the handle 46 and rotates it. The pulling of the handle 46 causes the straight rod 43 to overcome the tension of the tension spring 42 and drive the elliptical plate 45 to unlock. When the elliptical plate 45 is completely separated from the elliptical hole 48 and stored in the storage groove 415 of the slide cylinder 44, the locking component 4 releases the lock on the cabinet door 2. At this time, the operator can easily open the cabinet door 2 by holding the handle 3.

[0035] In one embodiment of this utility model, a positioning component 5 is provided on the cabinet door 2. The positioning component 5 includes a limiting ring 51. The limiting ring 51 is fixedly installed on the high-voltage cabinet body 1. The limiting ring 51 has a positioning hole 52. The cabinet door 2 has a circular groove 53. One end of a short spring 54 is fixedly installed on the inner side of the cabinet door 2. A ball-head positioning rod 55 is fixedly installed on the other end of the short spring 54. Multiple sets of positioning holes 52, circular grooves 53, short springs 54 and ball-head positioning rods 55 are provided. The short spring 54 is located inside the circular groove 53. The ball-head positioning rod 55 slides inside the circular groove 53. The circular cross-section of the positioning hole 52 is the same size as the circular cross-section of the ball-head positioning rod 55.

[0036] In this embodiment, while the locking component 4 completes the locking operation, the positioning component 5 begins to function. As the cabinet door 2 gradually closes and approaches the high-voltage cabinet body 1, the short spring 54 in the circular groove 53 of the cabinet door 2 begins to be compressed due to the movement of the cabinet door 2. When the cabinet door 2 reaches the closed position, the short spring 54 releases the previously accumulated elastic potential energy, pushing the ball-head positioning rod 55 to quickly engage in the positioning hole 52 of the limiting ring 51 of the high-voltage cabinet body 1.

[0037] The coordinated operation of multiple positioning holes 52 and ball-head positioning rods 55 not only ensures that the cabinet door 2 is accurately positioned in the closed position, but also makes the cabinet door 2 and the high-voltage cabinet body 1 fit more tightly, so that the gap between the two is evenly distributed. This tight fit greatly improves the sealing performance of the cabinet door 2, effectively preventing dust, moisture and other impurities from entering the high-voltage cabinet, avoiding these impurities from causing corrosion or short circuits to the internal equipment, and ensuring the normal operation of the equipment. At the same time, during the opening of the cabinet door 2, the ball-head positioning rods 55 slide in the positioning holes 52, and gradually compress the short springs 54. The elastic potential energy of the short springs 54 increases with the increase of compression. When the cabinet door 2 is fully opened, the ball-head positioning rods 55 completely disengage from the positioning holes 52.

[0038] All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0039] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A high-voltage switchgear with a self-locking positioning structure, comprising a high-voltage switchgear body (1), wherein a cabinet door (2) is hingedly mounted on the high-voltage switchgear body (1), and a handle (3) is fixedly mounted on the cabinet door (2), characterized in that: The high-voltage switchgear body (1) is provided with a locking component (4), the locking component (4) comprising: Mounting cylinder (41): Mounting cylinder (41) is fixedly mounted on the high voltage cabinet body (1). One end of tension spring (42) is rotatably mounted on the inner side of mounting cylinder (41). One end of straight rod (43) is fixedly mounted on the other end of tension spring (42). Sliding cylinder (44) is fixedly mounted on mounting cylinder (41). Storage slot (415), the other end of the slide cylinder (44) is provided with storage slot (415), the other end of the straight rod (43) is fixedly installed with one end of the elliptical plate (45), the other end of the elliptical plate (45) is fixedly installed with a handle (46), the cabinet door (2) is fixedly installed with a locking plate (47), and the locking plate (47) is provided with an elliptical hole (48); A cover plate (49) is snapped onto the locking plate (47). A handle (410) is fixedly installed on the cover plate (49). A sliding groove (411) is provided on the cabinet door (2). One end of a long spring (412) is fixedly installed on the inside of the cabinet door (2). One end of a round rod (413) is fixedly installed on the other end of the long spring (412). One end of a rubber block (414) is fixedly installed on the other end of the round rod (413).

2. A high-voltage switchgear with a positioning self-locking structure according to claim 1, characterized in that: The straight rod (43) slides inside the mounting cylinder (41) and the sliding cylinder (44). The cross-section of the elliptical plate (45) is the same size as the cross-section of the receiving groove (415). The cross-section of the elliptical plate (45) is the same size as the cross-section of the elliptical hole (48).

3. A high-voltage switchgear with a positioning self-locking structure according to claim 1, characterized in that: The long spring (412) is disposed inside the slide groove (411), the round rod (413) slides inside the slide groove (411), and the rubber block (414) slides inside the slide groove (411).

4. A high-voltage switchgear with a positioning self-locking structure according to claim 1, characterized in that: The end of the rubber block (414) away from the round rod (413) is arc-shaped, and an anti-slip strip is fixedly installed on the end of the rubber block (414) away from the round rod (413). The end of the rubber block (414) away from the round rod (413) is in contact with the elliptical plate (45).

5. A high-voltage switchgear with a positioning self-locking structure according to claim 1, characterized in that: The cabinet door (2) is provided with a positioning component (5), which includes a limiting ring (51). The limiting ring (51) is fixedly installed on the high-voltage cabinet body (1). The limiting ring (51) has a positioning hole (52). The cabinet door (2) has a circular groove (53). One end of a short spring (54) is fixedly installed on the inside of the cabinet door (2). The other end of the short spring (54) is fixedly installed with a ball-head positioning rod (55).

6. A high-voltage switchgear with a positioning self-locking structure according to claim 5, characterized in that: The positioning hole (52), the circular groove (53), the short spring (54) and the ball-head positioning rod (55) are provided in multiple sets.

7. A high-voltage switchgear with a positioning self-locking structure according to claim 5, characterized in that: The short spring (54) is disposed inside the circular groove (53), the ball head positioning rod (55) slides inside the circular groove (53), and the circular cross-section of the positioning hole (52) is the same size as the circular cross-section of the ball head positioning rod (55).

Images