Safety protection device for 0.4 kV hot-line work

Abstract

The utility model provides a safety protection device for 0.4 kV hot-line work, which comprises a sleeve, an ejector rod is inserted in the sleeve in a sliding manner, a front plate is fixed at the front end of the sleeve, a U-shaped insulating plate is placed on the front plate, a pushing assembly is arranged on the outer surface of the sleeve, the pushing assembly comprises a pushing ring, and the pushing ring is connected with the ejector rod in a sliding manner. Compared with the prior art, under the cooperation of the pushing assembly and the clamping assembly, the U-shaped insulating plate can be clamped through the insertion plate, and the extrusion plates on the two sides extrude the U-shaped insulating plate to contract inwards, so that the U-shaped insulating plate can be conveniently inserted into a partition plate of a circuit breaker; when the U-shaped insulating plate is ejected out by the ejector rod, the clamping releasing effect can be completed at the same time, and the U-shaped insulating plate can be conveniently withdrawn to the front end of the front plate in an extrusion shrinkage mode through the cooperation of the extrusion plate and the insertion plate, so that the U-shaped insulating plate can be conveniently taken back from the interior of the partition plate of the circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of live-line working safety protection technology, specifically a safety protection device for 0.4kV live-line working. Background Technology

[0002] In existing 0.4kV live-line work, circuit breaker insulation shielding is required for low-voltage distribution panels (cabinets). Existing circuit breakers are generally equipped with insulating partitions to separate adjacent phases, but the area directly in front of the circuit breaker remains exposed, so insulation protection is required before live-line work. Existing technology involves manually placing U-shaped insulating plates (4) between adjacent insulating partitions, but this operation is inefficient and unsafe.

[0003] Patent CN118157008A proposes a 0.4kV live-line working safety protection device. The device involves pushing forward the main push rod and opening the end block. The opening end block presses against the driven lever, causing it to move outward. This, in turn, causes the drive lower rod and drive roller to move outward through the rotation of the hinged ring. This, in turn, moves the translation clamping plate outward, and the U-shaped insulating plate opens to its maximum shape. At this point, the compressive force between the U-shaped insulating plate and the inner wall of the translation clamping plate decreases sharply. Continuing to push forward the main push rod will eject the U-shaped insulating plate.

[0004] The above technical solution allows the U-shaped insulating plate to be easily inserted between the two partitions of the circuit breaker. However, because the U-shaped insulating plate is clamped, it is not convenient to remove it after maintenance, which causes inconvenience during use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a safety protection device for 0.4kV live-line work to solve the problems mentioned in the background. This invention features a novel structure. With the cooperation of the pushing component and the clamping component, the U-shaped insulating plate can be clamped by the insert plate, and the squeezing plates on both sides squeeze the U-shaped insulating plate inward to facilitate insertion into the circuit breaker's partition. When the push rod pushes it out, the clamping effect can be achieved simultaneously. Through the cooperation of the squeezing plate and the insert plate, the U-shaped insulating plate can be easily retracted to the front end of the front plate by squeezing and shrinking, thus facilitating the removal of the U-shaped insulating plate from the circuit breaker's partition.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety protection device for 0.4kV live-line work, comprising a sleeve, a push rod slidably inserted inside the sleeve, a front plate fixed at the front end of the sleeve, a U-shaped insulating plate placed on the front plate, a pushing assembly on the outer surface of the sleeve, the pushing assembly including a push ring, the push ring slidably sleeved on the front end surface of the sleeve, and a connecting ring slidably sleeved on the rear end surface of the sleeve, a groove is formed on the top surface of the sleeve, and the inner walls of the connecting ring and the push ring slide along the groove, a clamping assembly is provided on the four sides of the front plate, the clamping assembly including an insert plate, the top and bottom of the front plate having insert plates that slidably contact the top and bottom of the U-shaped insulating plate, and compression plates on both sides of the front plate that compressively contact the outer wall of the U-shaped insulating plate, the insert plates and compression plates being drivenly connected to the push ring and the connecting ring respectively.

[0007] Furthermore, a perforation is provided on the surface of the front plate, and the top rod passes through the perforation and presses against the back of the U-shaped insulating plate. A first spring is sleeved on the rear end of the top rod, and the other end of the first spring is fixedly connected to the sleeve.

[0008] Furthermore, the pushing assembly also includes a gear, and a gear is rotatably mounted in the middle of the slide groove via a bearing. The gear is meshed with toothed plates on both sides, and the toothed plates slide along the inside of the slide groove. The two toothed plates are respectively fixedly connected to the push ring and the connecting ring.

[0009] Furthermore, a second spring is fitted onto the front end of the sleeve, and the other end of the second spring is fixedly connected to the push ring.

[0010] Furthermore, the clamping assembly also includes a limiting frame, with the top and bottom of the front plate fixed to the limiting frame, and the insert plate slidably inserted into the limiting frame. The top of the insert plate is L-shaped, and a connecting rod is rotatably installed on the surface of the push ring corresponding to the positions of the two insert plates via a rotating shaft, and the other end of the connecting rod is rotatably connected to the top of the insert plate via a rotating shaft.

[0011] Furthermore, a third spring is fixed to the top of the insert plate, and the bottom of the third spring is fixedly connected to the top and bottom of the front plate.

[0012] Furthermore, an inclined plate is fixed to the back of the extrusion plate, and a horizontal plate is fixed to the rear end of the inclined plate.

[0013] Furthermore, spring telescopic plates are fixed on both sides of the connecting ring, and the extended ends of the spring telescopic plates are fixedly connected to the rear end of the horizontal plate.

[0014] The beneficial effects of this utility model are:

[0015] When the push ring moves forward along the sleeve, the connecting rod drives the insert plate to move upward along the limiting frame, thereby releasing the clamping of the upper and lower ends of the U-shaped insulating plate. Because the push ring and the connecting ring move in opposite directions, the connecting ring moves backward along the sleeve, causing the horizontal plate, the inclined plate and the pressing plate to slide outward along the side of the U-shaped insulating plate, gradually releasing the pressing effect on both sides of the U-shaped insulating plate. The U-shaped insulating plate returns to its original shape and can be inserted into the partition of the circuit breaker to maintain stability.

[0016] When the push ring slides along the sleeve, the toothed plate at the bottom of the push ring meshes with one side of the gear, while simultaneously driving the toothed plate on the other side to slide along the groove. The push ring and the connecting ring move in opposite directions, which can realize the clamping assembly clamping or releasing the U-shaped insulating plate.

[0017] This invention pushes the push rod through the perforation in the sleeve and front plate, and presses it against the back of the U-shaped insulating plate, thereby pushing the U-shaped insulating plate out and inserting it into the partition of the circuit breaker.

[0018] Compared with the prior art, this utility model, with the cooperation of the pushing component and the clamping component, can clamp the U-shaped insulating plate through the insert plate, and the extrusion plates on both sides squeeze the U-shaped insulating plate inward to retract it, making it easy to insert into the partition of the circuit breaker. When the push rod pushes it out, the clamping effect can be completed at the same time. Through the cooperation of the extrusion plate and the insert plate, the U-shaped insulating plate can be easily retracted to the front end of the front plate by extrusion and retraction, thus making it easy to retrieve the U-shaped insulating plate from the partition of the circuit breaker. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a safety protection device for 0.4kV live-line work according to the present invention;

[0020] Figure 2 This is a schematic diagram of the front end structure of a sleeve for a 0.4kV live-line working safety protection device according to the present invention;

[0021] Figure 3 This is a schematic diagram showing the separation of the sleeve and the top rod in a safety protection device for 0.4kV live-line work according to this utility model;

[0022] Figure 4 This is a schematic diagram of the pushing component structure of a 0.4kV live-line working safety protection device according to the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of a chute for a 0.4kV live-line working safety protection device according to the present invention;

[0024] Figure 6 This is a schematic diagram of the connection between the push ring and the plug plate of a 0.4kV live-line working safety protection device according to this utility model;

[0025] Figure 7 This is a schematic diagram of the connection between the horizontal plate and the connecting ring of a safety protection device for 0.4kV live-line work according to this utility model.

[0026] In the diagram: 1. Sleeve; 11. Front plate; 12. Perforation; 2. Top rod; 21. First spring; 3. Pushing assembly; 31. Slide groove; 32. Gear; 33. Tooth plate; 34. Push ring; 35. Connecting ring; 36. Second spring; 4. U-shaped insulating plate; 5. Clamping assembly; 51. Limiting frame; 52. Insert plate; 53. Extrusion plate; 54. Inclined plate; 55. Third spring; 56. Connecting rod; 57. Spring telescopic plate; 58. Horizontal plate. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Please see Figures 1 to 7 This utility model provides a technical solution: a safety protection device for 0.4kV live-line work, including a sleeve 1, a push rod 2 slidably inserted inside the sleeve 1, and a front plate 11 fixed at the front end of the sleeve 1. A U-shaped insulating plate 4 is placed on the front plate 11. A pushing assembly 3 is provided on the outer surface of the sleeve 1, the pushing assembly 3 including a push ring 34. The push ring 34 is slidably sleeved on the front end surface of the sleeve 1, and a connecting ring 35 is slidably sleeved on the rear end surface of the sleeve 1. A sliding groove 31 is opened on the top surface of the sleeve 1, and the inner walls of the connecting ring 35 and the push ring 34 slide along the sliding groove 31. A clamping assembly 5 is provided on the four sides of the front plate 11, the clamping assembly 5 including an insert plate 52. The top and bottom of the front plate 11 are provided with insert plates 52, and the insert plates 52 slide against the top and bottom of the U-shaped insulating plate 4. The front plate 11 has extrusion plates 53 on both sides, which press against the outer wall of the U-shaped insulating plate 4. The insertion plate 52 and the extrusion plate 53 are respectively connected to the push ring 34 and the connecting ring 35. The scenario handled by this device is the same as that used for circuit breakers in patent CN118157008A. The state of the U-shaped insulating plate 4 after being inserted into the partition is also the same as that in patent CN118157008A. When using the device, the U-shaped insulating plate 4 is installed at the front end of the front plate 11 and positioned between the circuit breaker partitions. Through the cooperation of the pushing component 3 and the clamping component 5, the U-shaped insulating plate 4 is pushed into the partition of the circuit breaker and the elasticity of the U-shaped insulating plate 4 forms a snap-fit ​​insulation circuit. After maintenance, the clamping component 5 is used to press and shrink the sides of the U-shaped insulating plate 4, making it easy to remove from the partition.

[0029] In this embodiment, a through hole 12 is provided on the surface of the front plate 11, and the push rod 2 passes through the through hole 12 and presses against the back of the U-shaped insulating plate 4. A first spring 21 is sleeved at the rear end of the push rod 2, and the other end of the first spring 21 is fixedly connected to the sleeve 1. The push rod 2 is pushed out from the sleeve 1 and the through hole 12 of the front plate 11 and presses against the back of the U-shaped insulating plate 4, thereby pushing the U-shaped insulating plate 4 out and inserting it into the partition of the circuit breaker.

[0030] In this embodiment, the pushing component 3 further includes a gear 32. The gear 32 is rotatably mounted in the middle of the slide groove 31 via a bearing. The two sides of the gear 32 are meshed with toothed plates 33. The toothed plates 33 slide along the inside of the slide groove 31. The two toothed plates 33 are respectively fixedly connected to the push ring 34 and the connecting ring 35. The front end of the sleeve 1 is fitted with a second spring 36. The other end of the second spring 36 is fixedly connected to the push ring 34. When the push ring 34 slides along the sleeve 1, the toothed plate 33 at the bottom of the push ring 34 meshes with one side of the gear 32, and at the same time drives the other toothed plate 33 to slide along the slide groove 31. The push ring 34 and the connecting ring 35 move in opposite directions, which can realize the clamping component 5 clamping or releasing the U-shaped insulating plate 4.

[0031] In this embodiment, the clamping assembly 5 further includes a limiting frame 51. The limiting frame 51 is fixed to the top and bottom of the front plate 11, and the insert plate 52 is slidably inserted into the limiting frame 51. The top of the insert plate 52 is L-shaped. A connecting rod 56 is rotatably mounted on the surface of the push ring 34 corresponding to the positions of the two insert plates 52 via a rotating shaft. The other end of the connecting rod 56 is rotatably connected to the top of the insert plate 52 via a rotating shaft. A third spring 55 is fixed to the top of the insert plate 52, and the bottom of the third spring 55 is fixedly connected to the top and bottom of the front plate 11. An inclined plate 54 is fixed to the back of the pressing plate 53, and a horizontal plate 58 is fixed to the rear end of the inclined plate 54. Spring telescopic plates 57 are fixed to both sides of the connecting ring 35. The extended end of 57 is fixedly connected to the rear end of the horizontal plate 58. When the push ring 34 moves forward along the sleeve 1, the connecting rod 56 drives the insert plate 52 to move upward along the limiting frame 51, so that the insert plate 52 can release the clamping of the upper and lower ends of the U-shaped insulating plate 4. Because the push ring 34 and the connecting ring 35 move in opposite directions, the connecting ring 35 moves backward along the sleeve 1, driving the horizontal plate 58, the inclined plate 54 and the pressing plate 53 to slide outward along the side of the U-shaped insulating plate 4, gradually releasing the pressing effect on both sides of the U-shaped insulating plate 4. The U-shaped insulating plate 4 returns to its original shape and can be inserted into the partition of the circuit breaker to maintain stability. The spring telescopic plate 57 can coordinately extend and retract when the inclined plate 54 and the horizontal plate 58 move along the side of the U-shaped insulating plate 4 to maintain the connection.

[0032] When using the device, the U-shaped insulating plate 4 is installed at the front end of the front plate 11, corresponding to the circuit breaker partition. When the push ring 34 slides along the sleeve 1, the toothed plate 33 at the bottom of the push ring 34 meshes with one side of the gear 32, simultaneously driving the other toothed plate 33 to slide along the slide groove 31. The push ring 34 and the connecting ring 35 move in opposite directions, which can realize the clamping assembly 5 clamping or releasing the U-shaped insulating plate 4. When the push ring 34 moves forward along the sleeve 1, the connecting rod 56 drives the insert plate 52 to move upward along the limiting frame 51, so that the insert plate 52 can release the clamping of the upper and lower ends of the U-shaped insulating plate 4. Because the push ring 34 and the connecting ring 35 move in opposite directions, the connecting rod 56 can release the clamping of the upper and lower ends of the U-shaped insulating plate 4. The connecting ring 35 moves backward along the sleeve 1, causing the horizontal plate 58, the inclined plate 54, and the pressing plate 53 to slide outward along the side of the U-shaped insulating plate 4, gradually releasing the pressing effect on both sides of the U-shaped insulating plate 4. The U-shaped insulating plate 4 returns to its original shape and can be inserted into the partition of the circuit breaker to maintain stability. The spring telescopic plate 57 can coordinately extend and retract when the inclined plate 54 and the horizontal plate 58 move along the side of the U-shaped insulating plate 4 to maintain the connection. The U-shaped insulating plate 4 is pushed into the partition of the circuit breaker and the elasticity of the U-shaped insulating plate 4 forms a snap-fit ​​insulation circuit. After the maintenance is completed, the clamping assembly 5 squeezes and retracts both sides of the U-shaped insulating plate 4, making it easy to remove from the partition.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safety protection device for 0.4 kV live working comprising a sleeve (1), characterized in that: The inside of the sleeve (1) is slidingly inserted with a top rod (2), and the front end of the sleeve (1) is fixed with a front plate (11), the front plate (11) is placed with a U-shaped insulating plate (4), the outer surface of the sleeve (1) is provided with a pushing assembly (3), the pushing assembly (3) comprises a push ring (34), the front end surface of the sleeve (1) is slidingly sleeved with a push ring (34), and the rear end surface of the sleeve (1) is slidingly sleeved with a connecting ring (35), the top surface of the sleeve (1) is provided with a sliding groove (31), and the inner wall of the connecting ring (35) and the push ring (34) slides along the sliding groove (31), the periphery of the front plate (11) is provided with a clamping assembly (5), the clamping assembly (5) comprises an insert plate (52), the top and bottom of the front plate (11) is provided with an insert plate (52), and the insert plate (52) is in sliding contact with the top and bottom of the U-shaped insulating plate (4), the two sides of the front plate (11) are provided with an extrusion plate (53), the extrusion plate (53) is in extrusion contact with the outer wall of the U-shaped insulating plate (4), and the insert plate (52) and the extrusion plate (53) are respectively in transmission connection with the push ring (34) and the connecting ring (35).

2. A safety protection device for 0.4 kV live working according to claim 1, characterized in that: The surface of the front plate (11) is provided with a perforation (12), and the top rod (2) is extruded in contact with the back of the U-shaped insulating plate (4) from the perforation (12), the rear end of the top rod (2) is sleeved with a first spring (21), and the other end of the first spring (21) is fixedly connected with the sleeve (1).

3. A safety protection device for 0.4 kV live working according to claim 2, characterized in that: The pushing assembly (3) further comprises a gear (32), the middle position of the sliding groove (31) is rotatably installed with a gear (32) through a bearing, the two sides of the gear (32) are engagedly connected with a toothed plate (33), the toothed plate (33) slides along the inside of the sliding groove (31), and the two toothed plates (33) are respectively fixedly connected with the push ring (34) and the connecting ring (35).

4. A safety protection device for 0.4 kV live working according to claim 3, characterized in that: The front end of the sleeve (1) is sleeved with a second spring (36), and the other end of the second spring (36) is fixedly connected with the push ring (34).

5. A safety protection device for 0.4 kV live working according to claim 1, characterized in that: The clamping assembly (5) further comprises a limiting frame (51), the top and bottom of the front plate (11) is fixedly provided with a limiting frame (51), and the insert plate (52) is slidingly inserted into the inside of the limiting frame (51), the top of the insert plate (52) is L-shaped, corresponding positions of the two insert plates (52) on the surface of the push ring (34) are rotatably installed with a connecting rod (56) through a pivot, and the other end of the connecting rod (56) is rotatably connected with the top of the insert plate (52) through a pivot.

6. A safety protection device for 0.4 kV live working according to claim 5, characterized in that: The top of the insert plate (52) is fixedly provided with a third spring (55), and the bottom of the third spring (55) is fixedly connected with the top and bottom of the front plate (11).

7. A safety protection device for 0.4 kV live working according to claim 6, characterized in that: The back of the extrusion plate (53) is fixedly provided with an inclined plate (54), and the rear end of the inclined plate (54) is fixedly provided with a horizontal plate (58).

8. A safety protection device for 0.4 kV live working according to claim 7, characterized in that: The two sides of the connecting ring (35) are fixedly provided with a spring expansion plate (57), and the elongated end of the spring expansion plate (57) is fixedly connected with the rear end of the horizontal plate (58).

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