Handcart type high-voltage switch cabinet

Abstract

A handcart type high-voltage switch cabinet disclosed by the present invention comprises a cabinet body, a driving assembly and a baffle plate, the cabinet body is fixedly provided with a guide rod, the guide rod is sleeved with a lifting shell, the lifting shell is slidably provided with a sliding plate, and the baffle plate is connected with the sliding plate; a rotating pin is rotationally arranged on the lifting shell, a spiral groove is formed in the rotating pin, a protruding block is fixedly arranged on the sliding plate, and the protruding block is arranged in the spiral groove in a sliding mode; by arranging a rotating pin, before a baffle slides upwards, a connecting shaft slides in a connecting hole, the rotating pin is driven to rotate through a rotating pipe and a rotating ring, a sliding plate drives the baffle to slide towards the outer side through cooperation of a spiral groove and a protruding block, the baffle is separated from a shielding position, friction between the baffle and the cabinet body in the sliding process is avoided, and the cabinet body is protected from being damaged. And then the connecting shaft abuts against the top of the connecting hole, the lifting shell and the baffle are driven to move upwards, the static contact is exposed, a moving contact on the circuit breaker can be conveniently connected with the static contact in an inserted mode, and operation portability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power switch cabinet, in particular to a handcart type high-voltage switch cabinet. BACKGROUND

[0002] The high-voltage switch cabinet is the core electrical equipment in the power system, which is connected to the high-voltage power supply, distributes electric energy and protects the electrical equipment, and is widely used in power plants, substations, industrial enterprises and high-rise buildings.

[0003] In the operation of the handcart type high-voltage switch cabinet, the circuit breaker handcart is pushed onto the guide rail of the switch cabinet handcart room, and then the cabinet door is closed. By inserting a crank into the crank hole on the cabinet door and rotating, the handcart slides. In the sliding process, the isolation baffle outside the static contact of the switch cabinet is slid open through the mechanical interlocking device, and the moving contact on the handcart is inserted with the static contact after opening to complete the connection of the main circuit.

[0004] In the prior art, the baffle outside the static contact of the switch cabinet is guided by the guide rod. A certain gap is provided between the guide hole on the baffle and the guide rod to ensure the sliding reliability of the baffle and avoid the baffle from being stuck when the surface of the guide rod is slightly rusted, the baffle is slightly deformed due to transportation and installation (such as edge warping), and the insulating baffle material is hardened and the friction coefficient is increased in low temperature environment. However, this setting method will cause the baffle to be difficult to completely cover when shielding the static contact, affecting the shielding effect. SUMMARY

[0005] The purpose of the present application is to provide a handcart type high-voltage switch cabinet to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A handcart type high-voltage switch cabinet, comprising a cabinet body, a driving assembly and a baffle, the cabinet body is fixedly provided with a guide rod, the guide rod is sleeved with a lifting shell, the lifting shell is slidably provided with a sliding plate, and the baffle is connected with the sliding plate.

[0008] A rotating pin is rotatably arranged on the lifting shell, a spiral groove is arranged on the rotating pin, a protrusion is fixedly arranged on the sliding plate, and the protrusion is slidably arranged in the spiral groove.

[0009] A connecting hole is arranged on the lifting shell, a connecting shaft is slidably arranged in the connecting hole, a rotating tube is rotatably arranged on the connecting shaft, a rotating ring is slidably arranged on the rotating tube, the rotating ring is rotatably connected with the rotating pin, and a torsional spring is arranged between the rotating ring and the rotating pin.

[0010] Further comprising a locking member for locking the lifting shell, preventing the baffle from sliding under external force and driving the driving assembly to move when the baffle is in the shielding state.

[0011] Preferably, a plurality of second springs are arranged between the sliding plate and the lifting shell, and two ends of each second spring are fixedly connected with the sliding plate and the lifting shell respectively.

[0012] Preferably, a third spring is arranged between the rotating tube and the rotating ring, and two ends of the third spring are fixedly connected with the rotating tube and the rotating ring respectively.

[0013] Preferably, the locking member comprises a rotating rod fixedly arranged on the lifting shell, a locking plate rotatably arranged on the rotating rod, a locking groove arranged on the guide rod, a top end of the locking plate in clamped connection with the locking groove, and a bottom of the locking plate in abutment with the guide rod.

[0014] Preferably, a reciprocating block is slidably arranged on the connecting shaft, a cross rod is fixedly arranged on the reciprocating block, a long groove is arranged on the locking plate, and the cross rod is slidably arranged in the long groove.

[0015] Preferably, a first spring is arranged between the reciprocating block and the connecting shaft, and two ends of the first spring are fixedly connected with the reciprocating block and the connecting shaft respectively.

[0016] Preferably, a driving rod is rotatably arranged on the driving assembly, and the driving rod is in rotational connection with the connecting shaft.

[0017] Preferably, a fixing member is fixedly arranged on the cabinet body, and the fixing member is in abutment with the lifting shell.

[0018] Preferably, the baffle is in sliding insertion with the sliding plate, a limiting angle is fixedly arranged on the baffle, a limiting groove is arranged on the sliding plate, and the limiting angle is in clamped connection with the limiting groove.

[0019] Preferably, a limiting screw is arranged on the sliding plate.

[0020] In the above technical solution, the handcart type high-voltage switch cabinet provided by the application has the following beneficial effects:

[0021] 1. By arranging the rotating pin, the connecting shaft slides in the connecting hole before the baffle slides upward, and the rotating pin is driven to rotate by the rotating tube and the rotating ring, the sliding plate is driven to slide outward by the cooperation of the spiral groove and the protrusion, and the sliding plate is separated from the shielding position, so as to avoid friction between the baffle and the cabinet body during sliding, and then the abutment between the connecting shaft and the top of the connecting hole drives the lifting shell and the baffle to move upward, so as to expose the static contact, facilitate the insertion of the moving contact of the circuit breaker, and improve the operation portability.

[0022] 2. By setting a torsion spring between the rotating ring and the rotating pin, if the rotating angle of the rotating ring is different, the sliding plates on both sides of the baffle will not slide synchronously during the sliding process, the torsion spring will compensate for the difference, avoid the sliding plates on both sides of the baffle from sliding out of sync, and ensure the stability of the sliding process of the sliding plates on both sides of the baffle with the baffle.

[0023] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the present disclosure.

[0024] This application file provides an overview of various implementations or examples of the technology described in this disclosure and is not intended to be a comprehensive or exhaustive disclosure of the technology disclosed. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0026] Figure 1 The cabinet structure schematic diagram provided by the embodiment of the present application;

[0027] Figure 2 The driving assembly, guide rod and baffle structure schematic diagram provided by the embodiment of the present application;

[0028] Figure 3 The A enlarged view in the Figure 2 provided by the embodiment of the present application;

[0029] Figure 4 The lifting shell structure schematic diagram provided by the embodiment of the present application;

[0030] Figure 5 The guide rod, baffle and lifting front view provided by the embodiment of the present application;

[0031] Figure 6 The B enlarged view in the Figure 5 provided by the embodiment of the present application;

[0032] Figure 7 The connecting shaft and lock plate structure schematic diagram provided by the embodiment of the present application;

[0033] Figure 8 The baffle and sliding plate connection structure schematic diagram provided by the embodiment of the present application.

[0034] Explanation of reference signs:

[0035] 1, cabinet; 11, fixed part; 2, drive assembly; 21, drive rod; 22, connecting shaft; 23, reciprocating block; 24, first spring; 25, cross rod; 3, guide rod; 31, locking groove; 4, baffle; 41, limiting angle; 5, lifting shell; 51, sliding plate; 52, rotating pin; 53, spiral groove; 54, second spring; 55, protrusion; 56, limiting groove; 57, limiting screw; 58, connecting hole; 6, rotating rod; 61, lock plate; 62, long groove; 7, rotating tube; 71, rotating ring; 72, torsional spring; 73, third spring. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present disclosure.

[0037] Please refer to 1-8, a handcart type high-voltage switch cabinet, including cabinet 1, drive assembly 2 and baffle 4, cabinet 1 is fixedly provided with guide rod 3, guide rod 3 is provided with lifting shell 5, lifting shell 5 is provided with sliding plate 51, baffle 4 is connected with sliding plate 51;Lifting shell 5 is rotatably provided with rotating pin 52, rotating pin 52 is provided with helical groove 53, sliding plate 51 is fixedly provided with lug 55, lug 55 is slidably arranged in helical groove 53;Lifting shell 5 is provided with connecting hole 58, connecting hole 58 is slidably provided with connecting shaft 22, connecting shaft 22 is rotatably provided with rotating tube 7, rotating tube 7 is slidably provided with rotating ring 71, rotating ring 71 is rotatably connected with rotating pin 52, and torsional spring 72 is arranged between rotating ring 71 and rotating pin 52;Further comprising locking member, for locking lifting shell 5, when baffle 4 is in shielding state, prevent baffle 4 from sliding under external force, and drive assembly 2 is driven to move, when baffle 4 is opened, connecting shaft 22 moves up, lifting shell 5 is fixed under the action of locking member, connecting shaft 22 slides in connecting hole 58, in the sliding process, rotating tube 7 and rotating ring 71 are driven to rotate, rotating ring 71 drives rotating pin 52 to rotate through torsional spring 72, in the process of rotating ring 71 rotating, torsional spring 72 is tightened, the force of torsional spring 72 acts on rotating pin 52 to make it rotate, and through the cooperation of helical groove 53 and lug 55, sliding plate 51 slides with baffle 4, in this process, baffle 4 slides outward and separates from the shielding position, then it rises again, and in this process, if the rotation of the two rotating rings 71 is out of sync and there is a certain error, the tightening of torsional spring 72 can compensate for the rotation angle, so that the two sliding plates 51 can slide synchronously, ensuring the stable sliding effect of baffle 4 and avoiding the phenomenon of sliding resistance.

[0038] Specifically, a plurality of second springs 54 are arranged between the sliding plate 51 and the lifting shell 5, the two ends of the second spring 54 are fixedly connected with the sliding plate 51 and the lifting shell 5 respectively, when the second spring 54 is in the compressed state, the baffle 4 is located at the shielding position, at this time, the baffle 4 is in contact with the cabinet 1 or the static contact, so as to improve the shielding effect of the static contact, after the second spring 54 is elongated to the normal state, the baffle 4 slides away from the cabinet 1 or the static contact with the sliding plate 51, avoiding friction between the sliding plate 51 and the cabinet 1 or the static contact when the sliding plate 51 rises.

[0039] In a further embodiment of the present invention, a third spring 73 is provided between the rotating tube 7 and the rotating ring 71. The two ends of the third spring 73 are fixedly connected to the rotating tube 7 and the rotating ring 71, respectively. When the connecting shaft 22 is at the bottom of the connecting hole 58, the position of the connecting shaft 22 is lower than the rotating ring 71, and the third spring 73 is in its normal state. When the connecting shaft 22 is at the top of the connecting hole 58, the position of the connecting shaft 22 is higher than the rotating ring 71, and the third spring 73 is still in its normal state. During the upward movement of the sliding plate 51 after the baffle 4 disengages from the blocking position, the second spring 54 is in its normal state. The second spring 54 acts on the sliding plate 51, improving the stability of the sliding plate 51, preventing the sliding plate 51 from sliding, and driving the rotating pin 52. The rotation phenomenon ensures the stability of the rotating pin 52 and the sliding plate 51. At the same time, when the third spring 73 is in the normal state, if the connecting shaft 22 is located at the top of the connecting hole 58, and if the connecting shaft 22 slides downward in the connecting hole 58, the third spring 73 needs to be compressed. At this time, the third spring 73 provides a certain resistance, ensuring the relative stability of the connecting shaft 22 and the connecting hole 58. Meanwhile, after the baffle 4 is disengaged from the blocking position, the second spring 54 rebounds from the compressed state to the normal state, ensuring the stability of the sliding plate 51. At the same time, the stability of the rotating pin 52 and the rotating ring 71 is ensured through the protrusion 55 and the spiral groove 53. Through the cooperation of the second spring 54 and the third spring 73, the stability between the components is improved during the upward sliding of the baffle 4.

[0040] Furthermore, the locking component includes a rotating rod 6 fixedly mounted on the lifting housing 5, a locking plate 61 rotatably mounted on the rotating rod 6, and a locking groove 31 provided on the guide rod 3. The top of the locking plate 61 engages with the locking groove 31, and the bottom of the locking plate 61 abuts against the guide rod 3. When the connecting shaft 22 is at the bottom of the connecting hole 58, the top of the locking plate 61 engages with the locking groove 31 to avoid restricting the upward sliding of the baffle 4. When the connecting shaft 22 abuts against the top of the connecting hole 58, the baffle 4 disengages from the blocking position, and the locking plate 61 disengages from the locking groove 31, thus unlocking the baffle 4 and allowing it to rise. The engagement of the locking plate 61 with the locking groove 31 prevents the baffle 4 from sliding under forces other than those of the driving component 2 when it is in the blocking position.

[0041] Furthermore, a reciprocating block 23 is slidably mounted on the connecting shaft 22, and a crossbar 25 is fixedly mounted on the reciprocating block 23. A long groove 62 is provided on the locking plate 61, and the crossbar 25 is slidably mounted within the long groove 62. A first spring 24 is provided between the reciprocating block 23 and the connecting shaft 22, with both ends of the first spring 24 fixedly connected to the reciprocating block 23 and the connecting shaft 22 respectively. A fixing member 11 is fixedly mounted on the cabinet 1, and the fixing member 11 abuts against the lifting shell 5. When the connecting shaft 22 moves upward, it drives the reciprocating block 23 and the crossbar 25 to move upward. During the upward movement of the crossbar 25, the first spring 24 adaptably extends and shortens. After the connecting shaft 22 moves upward to abut against the top of the connecting hole 58, the crossbar 25 is located at the upper end of the long groove 62, and the locking plate 61 completes its rotation and... When the locking groove 31 disengages, the first spring 24 is still in a stretched state. Under the action of the first spring 24, the bottom of the locking plate 61 abuts against the guide rod 3, improving the stability of the lifting shell 5, which carries the sliding plate 51 and the baffle 4 upward. When the connecting shaft 22 carries the lifting shell 5 downward, the connecting shaft 22 is still located at the top of the connecting hole 58. After the lifting shell 5 and the baffle 4 complete the downward reset, the lifting shell 5 abuts against the fixing member 11. At this time, the connecting shaft 22 slides downward in the connecting hole 58. During the downward movement, the first spring 24 first extends and then compresses to reset. During this process, the third spring 73 first compresses and then extends, and at the same time, the torsion spring 72 drives the rotating pin 52 to rotate, completing the sliding of the sliding plate 51 and causing the baffle 4 to slide to the blocking position.

[0042] In a further embodiment of the present invention, a drive rod 21 is rotatably mounted on the drive assembly 2. The drive rod 21 is rotatably connected to the connecting shaft 22. When the handcart slides inside the cabinet 1, the drive assembly 2 will push the connecting shaft 22 to move upward. This upward movement includes the connecting shaft 22 sliding upward in the connecting hole 58, and the connecting shaft 22 moving upward with the lifting shell 5. In this embodiment, the working principle of the drive assembly 2 and the handcart and the drive assembly 2 is the prior art and will not be described in detail. The drive rod 21 is rotatably connected to the connecting shaft 22. When the drive assembly 2 causes the drive rod 21 to drive the connecting shaft 22 to move upward and slide, the drive rod 21 will rotate at a certain angle, thus rotatably connecting the drive rod 21 and the connecting shaft 22 so that the drive rod 21 and the connecting shaft 22 can be adapted.

[0043] In the embodiments provided by the present invention, the baffle 4 and the sliding plate 51 are slidably inserted together. A limiting angle 41 is fixedly provided on the baffle 4, and a limiting groove 56 is provided on the sliding plate 51. The limiting angle 41 and the limiting groove 56 are engaged. A limiting screw 57 is provided on the sliding plate 51. When the baffle 4 is disassembled or installed separately, the limiting screw 57 is unscrewed to remove the baffle 4 from the sliding plate 51. After reinstallation, the limiting screw 57 is screwed on. The connection and fixation between the baffle 4 and the sliding plate 51 are achieved through the engagement of the limiting angle 41 and the limiting groove 56 and the cooperation of the limiting screw 57.

[0044] The above description only applies to the upper baffle 4. In practice, the same structure can be installed at the position of the lower baffle 4, so that the lower baffle 4 achieves the same technical effect as described above during sliding. The difference is that after the lower baffle 4 slides away from the obstruction position, it slides downwards, and the stationary contact is mounted on the cabinet 1 and obstructed by the baffle 4. When the circuit breaker trolley slides, the baffle is opened, and the moving contact on the circuit breaker is inserted into the stationary contact on the cabinet 1. Regarding the sliding direction of the baffle 4 mentioned in this invention, it is described in the appendix. Figure 2 Chinese identifier.

[0045] Working principle: When installing the handcart-type circuit breaker, push the handcart into the cabinet 1, close the cabinet door, insert the crank handle into the crank handle hole on the cabinet door, and let the handcart slide with the circuit breaker. During the sliding, the handcart pushes the drive assembly 2, causing the drive rod 21 to push the connecting shaft 22 upward. At this time, the connecting shaft 22 slides in the connecting hole 58, and the lifting shell 5 remains stationary. During this process, the connecting shaft 22 moves the crossbar 25 upward through the reciprocating block 23. With the cooperation of the crossbar 25 and the long slot 62, the locking plate... When the locking plate 61 rotates, the top of the locking plate 61 disengages from the locking groove 31. Simultaneously, as the connecting shaft 22 slides and abuts against the top of the connecting hole 58, the crossbar 25 moves to the top of the long groove 62, the first spring 24 stretches, and the bottom of the locking plate 61 abuts against the guide rod 3. At the same time, the upward movement of the connecting shaft 22 causes the rotating tube 7 and the rotating ring 71 to rotate, and through the torsion spring 72, it acts on the rotating pin 52, causing the rotating pin 52 to rotate. The rotating pin 52, through the cooperation of the spiral groove 53 and the protrusion 55, causes the sliding plate 5... 1. The baffle 4 slides outward, and the second spring 54, due to its compressed state, extends to its normal state. After the baffle 4 slides outward, it disengages from its blocking position. Subsequently, the drive assembly 2 continues to drive the connecting shaft 22 upward via the drive rod 21. The connecting shaft 22 then abuts against the top of the connecting hole 58, moving the lifting housing 5 and the baffle 4 upward, exposing the stationary contact so that the moving contact of the circuit breaker can be inserted into it. After the moving contact and the stationary contact are inserted, the connecting shaft 22 still abuts against the top of the connecting hole 58. Next, after the circuit breaker is removed, the drive assembly 2 moves the connecting shaft 22 downward via the drive rod 21. During the downward movement, the connecting shaft 22 remains in contact with the top of the connecting hole 58. After the descent is completed, the lifting shell 5 abuts against the fixing part 11, and the drive rod 21 continues to move the connecting shaft 22 downward. The lifting shell 5 remains stationary, and the downward movement of the connecting shaft 22 causes the baffle 4 to slide inward and return to the blocking position. At the same time, the locking plate 61 rotates, and the top of the locking plate 61 engages with the locking groove 31.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A handcart-type high-voltage switchgear, comprising a cabinet (1), a drive assembly (2), and a baffle (4), characterized in that, A guide rod (3) is fixedly installed on the cabinet (1), a lifting shell (5) is sleeved on the guide rod (3), a sliding plate (51) is slidably installed on the lifting shell (5), and a baffle (4) is connected to the sliding plate (51). A rotating pin (52) is rotatably provided on the lifting shell (5), and a spiral groove (53) is provided on the rotating pin (52). A protrusion (55) is fixedly provided on the sliding plate (51), and the protrusion (55) is slidably provided in the spiral groove (53). The lifting shell (5) is provided with a connecting hole (58), a connecting shaft (22) is slidably provided on the connecting hole (58), a rotating tube (7) is rotatably provided on the connecting shaft (22), a rotating ring (71) is slidably provided on the rotating tube (7), the rotating ring (71) is rotatably connected to the rotating pin (52), and a torsion spring (72) is provided between the rotating ring (71) and the rotating pin (52). It also includes a locking component, which is used to lock the lifting shell (5) to prevent the baffle (4) from sliding under external force when the baffle (4) is in the blocked state, and to drive the drive assembly (2) to move.

2. The handcart-type high-voltage switchgear according to claim 1, characterized in that, A plurality of second springs (54) are provided between the sliding plate (51) and the lifting shell (5), and the two ends of the second springs (54) are fixedly connected to the sliding plate (51) and the lifting shell (5) respectively.

3. A handcart-type high-voltage switchgear according to claim 1, characterized in that, A third spring (73) is provided between the rotating tube (7) and the rotating ring (71), and the two ends of the third spring (73) are fixedly connected to the rotating tube (7) and the rotating ring (71) respectively.

4. A handcart-type high-voltage switchgear according to claim 1, characterized in that, The locking component includes a rotating rod (6) fixedly mounted on the lifting shell (5), a locking plate (61) rotatably mounted on the rotating rod (6), a locking groove (31) mounted on the guide rod (3), the top of the locking plate (61) engaging with the locking groove (31), and the bottom of the locking plate (61) abutting against the guide rod (3).

5. A handcart-type high-voltage switchgear according to claim 5, characterized in that, A reciprocating block (23) is slidably arranged on the connecting shaft (22), a crossbar (25) is fixedly arranged on the reciprocating block (23), a long groove (62) is provided on the locking plate (61), and the crossbar (25) is slidably arranged in the long groove (62).

6. A handcart-type high-voltage switchgear according to claim 6, characterized in that, A first spring (24) is provided between the reciprocating block (23) and the connecting shaft (22), and the two ends of the first spring (24) are fixedly connected to the reciprocating block (23) and the connecting shaft (22) respectively.

7. A handcart-type high-voltage switchgear according to claim 1, characterized in that, A drive rod (21) is rotatably mounted on the drive assembly (2), and the drive rod (21) is rotatably connected to the connecting shaft (22).

8. A handcart-type high-voltage switchgear according to claim 1, characterized in that, A fixing component (11) is fixedly installed on the cabinet (1), and the fixing component (11) abuts against the lifting shell (5).

9. A handcart-type high-voltage switchgear according to claim 1, characterized in that, The baffle (4) is slidably inserted into the sliding plate (51). A limiting angle (41) is fixedly provided on the baffle (4), and a limiting groove (56) is provided on the sliding plate (51). The limiting angle (41) and the limiting groove (56) are engaged.

10. A handcart-type high-voltage switchgear according to claim 1, characterized in that, Limit screws (57) are provided on the sliding plate (51).

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