Rapid separation type bus connecting device and method suitable for high-voltage switch cabinet

Abstract

The invention relates to the technical field of conductive connection, in particular to a rapid separation type bus connecting device and method suitable for a high-voltage switch cabinet, and the device comprises a connecting unit, and a bus interface is internally provided with a first battery cell; a clamping groove is formed in the side wall of the bus interface, the clamping groove inclines towards the interior of the bus interface and faces the connecting unit, the connecting unit comprises a connecting sleeve which can be arranged on the periphery of the bus interface in a sliding and sleeving mode, and a second battery cell electrically connected with the first battery cell is arranged in the connecting sleeve; sliding grooves are formed in the inner wall of the connecting sleeve in parallel in the extending direction of the clamping grooves, clamping blocks are arranged in the sliding grooves in a sliding mode in the extending direction of the sliding grooves, when the connecting sleeve completely sleeves the periphery of the bus interface, the clamping blocks extend out of the sliding grooves and are matched with the clamping grooves in a clamping mode, and the first battery cell makes contact with the second battery cell. According to the invention, the stability of the bus after connection is ensured, and virtual connection is also avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive connection, and in particular to a quick-detachable busbar connection device and method suitable for a high-voltage switch cabinet. Background Art

[0002] The high-voltage switchgear includes a current busbar, which is the main current path. Therefore, it is necessary to avoid looseness during installation. In addition, many high-voltage switchgears are generally placed side by side, which makes the busbar connections easily entangled. The entangled busbar has a great impact on maintenance and power safety.

[0003] Chinese patent announcement number CN211428372U discloses a busbar connection structure of a high-voltage switch cabinet, including a connector, a first busbar is fixedly connected inside the connector, a conductive rod is fixedly connected to the right side of the first busbar, a plug-in slot is provided on the right side of the connector, an outer sleeve is sleeved on the inner side of the plug-in slot, a joint base is fixedly connected to the right side of the outer sleeve, a circular hole is provided on the left side of the outer sleeve, a second busbar is fixedly connected to the inner side of the outer sleeve, spring slots are provided on the top and bottom of the joint base, a clamping spring is fixedly connected inside the spring slot, and clamping blocks are fixedly connected to the opposite sides of the two clamping springs, two clamping slots are provided on the inner side of the connector, a guide block is fixedly connected to the right side of the connector, a vertical through hole is provided on the top of the guide block, a horizontal through hole is provided on the right side of the guide block, a first guide slot is provided on the top of the guide block, a second guide slot is provided on the right side of the guide block, and a third guide slot is provided on the bottom of the guide block.

[0004] The above scheme provides a busbar connection structure, but the busbar is clamped by a spring groove and a clamping spring, which requires a large elastic force of the clamping spring. After long-term use, the elastic force of the clamping spring is likely to decrease, and the busbar connection becomes loose. The tightness of the busbar after connection cannot be guaranteed. It is easy to loosen during use, resulting in poor contact, affecting the operating safety and reliability of the equipment. At the same time, the staff are also prone to electric shock when maintaining the high-voltage switchgear. Summary of the invention

[0005] In view of the above problems, a quick-detachable busbar connection device and method suitable for a high-voltage switchgear are provided. A snap-in groove is provided on the busbar interface so that the snap-in groove is inclined from the outside to the inside and toward the connection unit along the radial direction of the busbar interface. When the connection sleeve is completely sleeved on the busbar interface, a snap-in block slidably arranged in the sliding groove slides into the snap-in groove. After the snap-in block is snap-fitted with the snap-in groove, the connection unit and the busbar interface are completely locked, thereby preventing relative movement between the connection unit and the busbar interface, and also preventing the connection unit and the busbar interface from falling off due to external forces after connection, thereby avoiding virtual connection or disconnection between the busbar interface and the connection unit. Moreover, after the inclined snap-in groove is snap-fitted with the snap-in block, the probability of the snap-in block bending when subjected to the force of separating the connection unit and the busbar interface can be reduced, thereby ensuring the safety of the staff during daily maintenance, and also avoiding the explosion phenomenon caused by virtual connection during use of the high-voltage switchgear.

[0006] In order to solve the problems of the prior art, the present invention provides a quick-detachable busbar connection device suitable for a high-voltage switch cabinet, comprising a connection unit, a first battery cell is arranged in the busbar interface; a clamping groove is provided on the side wall of the busbar interface, the clamping groove is inclined toward the inside of the busbar interface and faces the connection unit, the connection unit comprises a connection sleeve that can be slidably sleeved on the periphery of the busbar interface, a second battery cell electrically connected to the first battery cell is arranged in the connection sleeve, a sliding groove is provided on the inner wall of the connection sleeve parallel to the extension direction of the clamping groove, a clamping block is slidably arranged in the sliding groove along the extension direction of the sliding groove, and when the connection sleeve is completely sleeved on the periphery of the busbar interface, the clamping block extends from the sliding groove and is clamped and matched with the clamping groove.

[0007] Preferably, a connecting rod is provided on the upper part of the clamping block, and a push plate is provided on the outer side of the connecting sleeve for movement along the extension direction of the connecting sleeve. An inclined groove is provided on the push plate, and one end of the connecting rod away from the clamping block extends into the inclined groove and slidably cooperates with the inclined groove.

[0008] Preferably, a rotating sleeve is rotatably arranged on the periphery of the connecting sleeve, a thread is provided on the outer peripheral wall of the connecting sleeve, the rotating sleeve is threadedly matched with the connecting sleeve, the pushing plate is located between the rotating sleeve and the connecting sleeve and is rotatably matched with the rotating sleeve, when the rotating sleeve moves along the extension direction of the connecting sleeve, the pushing plate moves synchronously with the rotating sleeve.

[0009] Preferably, a reset unit for driving the rotating sleeve to reset is provided on the rotating sleeve, and the reset unit includes a follower ring arranged between the rotating sleeve and the connecting sleeve, the rotating sleeve and the follower ring rotate in cooperation and the follower ring cannot rotate around its own axis, and a torsion spring is provided between the follower ring and the rotating sleeve along the extension direction of the connecting sleeve, and when the clamping block is clamped with the clamping groove, the torsion spring contracts.

[0010] Preferably, a guide groove is provided on the outer side wall of the connecting sleeve along the extension direction of the connecting sleeve, and the inner ring of the follower ring extends into the guide groove and slidably cooperates with the guide groove.

[0011] Preferably, a limiting groove is provided at the end of the rotating sleeve, and a snap-fit ​​block is provided on one side of the limiting groove and is in the same circumference as the limiting groove. When the snap-fit ​​block is disengaged from the snap-fit ​​groove, the limiting groove and the limiting block are misaligned, and when the snap-fit ​​block is snap-fitted with the snap-fit ​​groove, the limiting groove and the limiting block are snap-fitted.

[0012] Preferably, a pressure ring is fixedly provided on the side of the limit block away from the rotating sleeve. The pressure ring is slidingly matched with the connecting sleeve along the extension direction of the connecting sleeve. There is an annular gap between the pressure ring and the end of the connecting sleeve. The spring is arranged in the annular gap along the extension direction of the connecting sleeve, and the two ends of the spring are respectively fixedly connected to the pressure ring and the end of the connecting pipe.

[0013] Preferably, a rolling ball is rotatably arranged on the end of the limiting block facing the rotating sleeve, and the rolling ball is rollingly matched with the end of the rotating sleeve.

[0014] Preferably, a positioning block is fixedly provided at the end of the connecting sleeve, and a positioning groove which is snap-fitted with the positioning block is provided at the end of the busbar interface.

[0015] The present invention also relates to a quick-disconnect busbar connection method applicable to a high-voltage switch cabinet, using a quick-disconnect busbar connection device applicable to a high-voltage switch cabinet, and the specific steps are as follows: S1. Align the connecting sleeve with the busbar interface, and then place the connecting sleeve on the busbar interface; S2, making the connecting sleeve gradually slide into the busbar interface, at this time the clamping block does not extend out, and the first battery cell and the second battery cell are in a non-contact state; S3. When the clamping groove overlaps with the sliding groove, the connecting sleeve cannot continue to slide relative to the busbar interface, and the clamping block slides out of the sliding groove and clamps with the clamping groove. At this time, the end of the first battery cell contacts the end of the second battery cell.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a clamping groove on the busbar interface so that the clamping groove is inclined from outside to inside and toward the connection unit along the radial direction of the busbar interface. When the connection sleeve is completely sleeved on the busbar interface, the clamping block slidably arranged in the sliding groove slides into the clamping groove. After the clamping block is clamped and matched with the clamping groove, the connection unit and the busbar interface are completely locked, thereby preventing the connection unit and the busbar interface from moving relative to each other, and also preventing the connection unit and the busbar interface from falling off due to external forces after connection, thereby avoiding virtual connection or disconnection between the busbar interface and the connection unit. Moreover, after the inclined clamping groove is clamped and matched with the clamping block, the probability of the clamping block bending when the connection unit and the busbar interface are separated from each other can be reduced, thereby ensuring the safety of the staff during daily maintenance, and also avoiding the explosion phenomenon caused by virtual connection during use of the high-voltage switch cabinet; 2. A rotating sleeve is provided and the rotating sleeve and the connecting sleeve are threadedly matched, and a torsion spring is provided on one side of the rotating sleeve, so that the rotating sleeve can not only push the clamping block into the clamping groove through the pushing plate, but also the reset elastic force of the torsion spring can drive the rotating sleeve to rotate in the opposite direction, so that the rotating sleeve can rotate and reset by itself. In order to limit the rotating sleeve, a limit groove is provided at one end of the rotating sleeve, and a limit block that can be clamped and matched with the limit groove is provided on one side of the limit groove. When the clamping block is clamped and matched with the clamping groove, the limit block is also clamped with the limit groove, so that the rotating sleeve is prevented from being driven by the torsion spring to rotate in the opposite direction. When the connecting unit and the busbar interface need to be separated, the limit block can be pulled out of the limit groove, which not only ensures the stable connection between the busbar interface and the connecting unit, but also enables the busbar interface and the connecting unit to be quickly separated when disassembly is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a fast-disconnection busbar connection device suitable for a high-voltage switch cabinet of the present invention when a clamping block and a clamping groove are not clamped; Figure 2 It is a three-dimensional schematic diagram of a fast-disconnection busbar connection device suitable for a high-voltage switch cabinet of the present invention after a clamping block and a clamping groove are clamped together; Figure 3 It is a side view of a fast-disconnecting busbar connection device suitable for a high-voltage switch cabinet according to the present invention when a clamping groove and a clamping block are not clamped; Figure 4 The invention is a quick-detachable busbar connection device suitable for high-voltage switch cabinet. Figure 3 Schematic cross-sectional view at AA in the middle; Figure 5 It is a cutaway stereoscopic schematic diagram of a fast-disconnection busbar connection device applicable to a high-voltage switch cabinet of the present invention when a clamping groove and a clamping block are not clamped; Figure 6The invention is a quick-detachable busbar connection device suitable for high-voltage switch cabinet. Figure 5 A partial enlarged schematic diagram of point B in the middle; Figure 7 The invention is a cutaway stereoscopic diagram of a fast-disconnect busbar connection device suitable for a high-voltage switch cabinet after the clamping block and the clamping groove are clamped together. Figure 1 ; Figure 8 The invention is a cutaway stereoscopic diagram of a fast-disconnect busbar connection device suitable for a high-voltage switch cabinet after the clamping block and the clamping groove are clamped together. Figure 2 ; Fig. 9 The invention is a quick-detachable busbar connection device suitable for high-voltage switch cabinet. Figure 8 A partial enlarged schematic diagram of point C in the middle; Fig.10 It is a three-dimensional schematic diagram of a quick-disconnect busbar connection device suitable for a high-voltage switch cabinet of the present invention with the rotating sleeve removed; Fig.11 The invention is a three-dimensional schematic diagram of a busbar interface and a connection unit in a quick-detachable busbar connection device suitable for a high-voltage switch cabinet before being connected.

[0018] The numbers in the figure are: 1, busbar interface; 11, snap-in groove; 12, first battery cell; 2, connecting unit; 21, connecting sleeve; 211, sliding groove; 212, second battery cell; 213, positioning block; 214, positioning groove; 22, snap-in block; 23, push plate; 231, inclined groove; 24, connecting rod; 25, rotating sleeve; 251, limit groove; 252, limit block; 2521, rolling ball; 253, pressure ring; 254, spring; 26, reset unit; 261, torsion spring; 262, follower ring; 263, guide groove. DETAILED DESCRIPTION

[0019] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Reference Figure 1-Figure 6A quick-detachable busbar connection device suitable for a high-voltage switch cabinet comprises a connection unit 2, a first battery cell 12 is arranged in a busbar interface 1; a snap-in groove 11 is provided on the side wall of the busbar interface 1, the snap-in groove 11 is inclined toward the inside of the busbar interface 1 and faces the connection unit 2, the connection unit 2 comprises a connection sleeve 21 which can be slidably sleeved on the periphery of the busbar interface 1, a second battery cell 212 electrically connected to the first battery cell 12 is arranged in the connection sleeve 21, a sliding groove 211 is provided on the inner wall of the connection sleeve 21 in parallel with the extension direction of the snap-in groove 11, a snap-in block 22 is slidably arranged in the sliding groove 211 along the extension direction of the sliding groove 211, and when the connection sleeve 21 is completely sleeved on the periphery of the busbar interface 1, the snap-in block 22 extends from the sliding groove 211 and snap-fits with the snap-in groove 11.

[0021] When the busbar interface 1 on a traditional high-voltage switchgear is connected to the connection unit 2, in order to ensure the stability of the connection between the busbar interface 1 and the connection unit 2, a marble-type snap-in connection is usually used to snap-in the busbar interface 1 and the connection unit 2. In the prior art, both the busbar interface 1 and the connection unit 2 can be provided with marbles. If the busbar interface 1 is provided with marbles, a corresponding slot needs to be provided on the connection unit 2. Similarly, if the connection unit 2 is provided with marbles, a corresponding slot also needs to be provided on the busbar interface 1. After the busbar interface 1 and the connection unit 2 are plugged in, the marble overlaps with the slot, and the marble pops out and snaps into the slot. However, during the installation process, if one side of the busbar interface 1 or the connection unit 2 is subjected to force, the connection between the busbar interface 1 and the connection unit 2 will become loose, resulting in the inability of the marble to snap the two normally. This is because when the marble is engaged with the slot, the marble cannot lock the busbar interface 1 and the connection unit 2 through the slot. When the busbar interface 1 and the connection unit 2 are subjected to two pulling forces moving away from each other, the marble will slide out of the slot, causing the busbar interface 1 and the connection unit 2 to be easily disconnected or poorly connected during installation. The voltage and current in the high-voltage switchgear are high. If the busbar interface 1 and the connection unit 2 are poorly connected, it will cause unstable current transmission, which will not only easily cause damage to related electrical components in the high-voltage switchgear, but also easily cause fire. At the same time, when the staff performs daily maintenance on the high-voltage switchgear, it is also easy to cause casualties due to accidental touch.

[0022] In order to avoid the above situation, the structure of the existing connection device is redesigned so that after the bus interface 1 is connected to the connection unit 2, the bus interface 1 and the connection unit 2 are completely locked, avoiding the situation where the bus interface 1 and the connection unit 2 are virtual connection or disconnection when connected. The specific structure and working process of the connection unit 2 are as follows: when connecting, align the connection unit 2 with the bus interface 1 so that the axis of the connection sleeve 21 is in line with the axis of the bus structure, and then put the connection sleeve 21 on the bus interface 1. At this time, the clamping block 22 is in the sliding position. In the movable groove 211, when the connecting sleeve 21 is completely sleeved on the busbar interface 1, the sliding groove 211 coincides with the clamping groove 11, and the clamping block 22 located in the sliding groove 211 extends out from the sliding groove 211 and slides into the clamping groove 11. After the clamping block 22 is clamped and matched with the clamping groove 11, the connection operation between the busbar interface 1 and the connecting unit 2 is completed. At this time, the clamping groove 11 arranged on the busbar interface 1 is inclined from the outside to the inside along the radial direction of the busbar interface 1 and toward the connecting unit 2, and a part of the clamping block 22 clamped with the clamping groove 11 is still located in the sliding groove 211. At the same time, before the connecting unit 2 and the bus interface 1 are mutually inserted, the second battery cell 212 in the connecting sleeve 21 and the first battery cell 12 on the bus interface 1 are in a non-contact state. Only after the connecting unit 2 and the bus interface 1 are mutually inserted, the first battery cell 12 is plugged and connected with the second battery cell 212. Since the connecting unit 2 and the bus interface 1 are mutually inserted and engaged through the snap-in groove 11 and the snap-in block 22, the connecting unit 2 and the bus interface 1 are locked. At the same time, the plug-in first battery cell 12 and the second battery cell 212 improve the stability of the electrical connection, avoid the virtual connection between the bus interface 1 and the connecting unit 2, and ensure that the bus interface 1 and the connecting unit 2 will not loosen after connection, thereby avoiding the virtual connection or disconnection between the bus interface 1 and the connecting unit 2.

[0023] By opening a snap-in groove 11 on the busbar interface 1, the snap-in groove 11 is inclined from outside to inside and toward the connecting unit 2 along the radial direction of the busbar interface 1. When the connecting sleeve 21 is completely sleeved on the busbar interface 1, the snap-in block 22 slidably arranged in the sliding groove 211 slides into the snap-in groove 11. After the snap-in block 22 is snap-fitted with the snap-in groove 11, the connecting unit 2 and the busbar interface 1 are completely locked, thereby preventing the connecting unit 2 and the busbar interface 1 from moving relative to each other, and also preventing the connecting unit 2 and the busbar interface 1 from falling off due to external forces after being connected, thereby avoiding the virtual connection or disconnection between the busbar interface 1 and the connecting unit 2. Moreover, after the inclined snap-in groove 11 is snap-fitted with the snap-in block 22, the probability of the snap-in block 22 bending when subjected to the force of separating the connecting unit 2 and the busbar interface 1 from each other is reduced, thereby ensuring the safety of the staff during daily maintenance, and also avoiding the explosion phenomenon caused by the virtual connection during the use of the high-voltage switch cabinet.

[0024] Reference Figure 4 and Figure 8 A connecting rod 24 is provided on the upper part of the clamping block 22, and a pushing plate 23 is provided on the outer side of the connecting sleeve 21 for movement along the extension direction of the connecting sleeve 21. An inclined groove 231 is provided on the pushing plate 23, and one end of the connecting rod 24 away from the clamping block 22 extends into the inclined groove 231 and slidably cooperates with the inclined groove 231.

[0025] When the connecting sleeve 21 is completely sleeved on the busbar interface 1, the pushing plate 23 arranged on the connecting sleeve 21 moves on one side of the connecting sleeve 21, and the pushing plate 23 pushes the connecting rod 24 through the inclined groove 231, so that the connecting rod 24 drives the clamping block 22 to extend out from the sliding groove 211 and slide into the clamping groove 11, so that the clamping block 22 and the clamping groove 11 can be smoothly clamped and matched.

[0026] Reference Fig.11 A rotating sleeve 25 is rotatably provided on the periphery of the connecting sleeve 21, and a thread is provided on the outer peripheral wall of the connecting sleeve 21. The rotating sleeve 25 is threadedly matched with the connecting sleeve 21. The pushing plate 23 is located between the rotating sleeve 25 and the connecting sleeve 21 and is rotatably matched with the rotating sleeve 25. When the rotating sleeve 25 moves along the extension direction of the connecting sleeve 21, the pushing plate 23 moves synchronously with the rotating sleeve 25.

[0027] Since the rotating sleeve 25 is threadedly matched with the connecting sleeve 21, when the connecting sleeve 21 is sleeved on the busbar interface 1, the rotating sleeve 25 does not rotate. When the connecting sleeve 21 is completely connected to the busbar interface 1, the connecting sleeve 21 cannot continue to slide toward the side of the busbar interface 1. At this time, the rotating sleeve 25 is rotated. Under the guidance of the thread of the connecting sleeve 21, the rotating sleeve 25 gradually moves toward the side away from the busbar interface 1. The rotating sleeve 25 drives the pushing plate 23 to move synchronously along the extension direction of the connecting sleeve 21. The inclined groove 231 set on the pushing plate 23 can push the connecting rod 24, so that the clamping block 22 is clamped and matched with the clamping groove 11.

[0028] Reference Figure 8 and Fig. 9 : A reset unit 26 for driving the rotating sleeve 25 to reset is arranged on the rotating sleeve 25, and the reset unit 26 includes a follower ring 262 arranged between the rotating sleeve 25 and the connecting sleeve 21. The rotating sleeve 25 rotates with the follower ring 262 and the follower ring 262 cannot rotate around its own axis. A torsion spring 261 is arranged between the follower ring 262 and the rotating sleeve 25 along the extension direction of the connecting sleeve 21. When the clamping block 22 is clamped with the clamping groove 11, the torsion spring 261 contracts.

[0029] Reference Figure 7 and Fig. 9A guide groove 263 is provided on the outer wall of the connecting sleeve 21 along the extending direction of the connecting sleeve 21 , and the inner ring of the follower ring 262 extends into the guide groove 263 and slidably cooperates with the guide groove 263 .

[0030] During the rotation of the rotating sleeve 25, the rotating sleeve 25 moves along the extension direction of the connecting sleeve 21 under the guidance of the thread on the connecting sleeve 21, and the follower ring 262 between the rotating sleeve 25 and the connecting sleeve 21 moves synchronously with the rotating sleeve 25 along the extension direction of the connecting sleeve 21. The follower ring 262 and the guide groove 263 slide in the extension direction of the connecting sleeve 21. Under the restriction of the guide groove 263, the follower ring 262 can only move along the extension direction of the connecting sleeve 21, and the follower ring 262 cannot rotate around its own axis. The torsion spring 261 arranged between the follower ring 262 and the rotating sleeve 25 can be contracted or restored and released when the rotating sleeve 25 rotates. This is Although the follower ring 262 can move along the extension direction of the connecting sleeve 21 when the rotating sleeve 25 rotates, the follower ring 262 and the rotating sleeve 25 are in a synchronous moving state in the extension direction of the connecting sleeve 21. Therefore, the follower ring 262 and the rotating sleeve 25 are in a relatively static state in the extension direction of the connecting sleeve 21, and the rotating sleeve 25 can still rotate around the connecting sleeve 21. In this way, the torsion spring 261, whose two ends are respectively fixedly connected to the follower ring 262 and the rotating sleeve 25, can shrink or recover when the rotating sleeve 25 rotates. When the rotating sleeve 25 drives the clamping block 22 to be clamped into the clamping groove 11 through the pushing plate 23, the torsion spring 261 is in a contracted state.

[0031] Reference Fig.10 and Fig.11 A limiting groove 251 is arranged at the end of the rotating sleeve 25, and a clamping block 22 which is on the same circumference as the limiting groove 251 is arranged on one side of the limiting groove 251. When the clamping block 22 is disengaged from the clamping groove 11, the limiting groove 251 and the limiting block 252 are misaligned. When the clamping block 22 is clamped and engaged with the clamping groove 11, the limiting groove 251 and the limiting block 252 are clamped and engaged.

[0032] When the clamping block 22 is clamped with the clamping groove 11, the torsion spring 261 is in a contracted state. In order to prevent the rotating sleeve 25 from resetting and rotating under the action of the torsion spring 261, a limiting groove 251 is provided at the end of the rotating sleeve 25, and the limiting groove 251 is clamped by the limiting block 252, so that the torsion spring 261 cannot drive the rotating sleeve 25 to rotate in the opposite direction, thereby preventing the rotating sleeve 25 from rotating and resetting, and preventing the clamping block 22 from slipping out of the clamping groove 11.

[0033] Reference Fig.10 and Fig.11A pressure ring 253 is fixedly arranged on the side of the limit block 252 away from the rotating sleeve 25. The pressure ring 253 slides with the connecting sleeve 21 along the extension direction of the connecting sleeve 21. An annular gap exists between the pressure ring 253 and the end of the connecting sleeve 21. The spring 254 is arranged in the annular gap along the extension direction of the connecting sleeve 21, and the two ends of the spring 254 are fixedly connected to the pressure ring 253 and the end of the connecting pipe respectively.

[0034] The pressure ring 253 is in sliding cooperation with the guide groove 263, and the pressure ring 253 cannot rotate around its own axis. Under the action of the spring 254, when the rotating sleeve 25 rotates, the rotating sleeve 25 gradually moves toward the limit block 252 along the extension direction of the connecting sleeve 21. When the end of the rotating sleeve 25 contacts the limit block 252, since the limit groove 251 and the limit block 252 are in a misaligned state at this time, as the rotating sleeve 25 moves, the rotating sleeve 25 squeezes the pressure ring 253 through the limit block 252, thereby squeezing the spring 254. When the clamping block 22 is clamped into the clamping groove 11, the limit block 252 is aligned with the limit groove 251, and the limit block 252 slides into the limit groove 251 under the action of the spring 254. When the limit block 252 slides into the limit groove 251, a "click" occurs. "Sound. If a "click" sound is heard during use, it means that the clamping block 22 has been successfully clamped into the clamping groove 11. If it is necessary to remove the connecting unit 2 from the busbar interface 1, it is only necessary to press the pressure ring 253 to make the limiting block 252 slide out of the limiting groove 251. At this time, the limiting block 252 no longer limits the limiting groove 251, and the torsion spring 261 can smoothly drive the rotating sleeve 25 to rotate in the opposite direction, and the rotating sleeve 25 moves toward the side of the busbar interface 1. In the process of the rotating sleeve 25 resetting and moving, the clamping block 22 gradually slides out of the clamping groove 11. When the rotating sleeve 25 stops rotating, the clamping block 22 is completely disconnected from the clamping groove 11, and the connecting unit 2 and the busbar interface 1 can be separated smoothly.

[0035] Reference Fig.10 A rolling ball 2521 is rotatably provided on the end of the limit block 252 facing the rotating sleeve 25 , and the rolling ball 2521 is in rolling cooperation with the end of the rotating sleeve 25 .

[0036] In this way, the friction coefficient between the rotating sleeve 25 and the limiting block 252 is reduced during rotation, and the wear between the limiting block 252 and the rotating sleeve 25 is reduced.

[0037] Reference Fig.11 A positioning block 213 is fixedly arranged at the end of the connecting sleeve 21, and a positioning groove 214 which is snap-fitted with the positioning block 213 is arranged at the end of the busbar interface 1.

[0038] When the connecting sleeve 21 is sleeved on the busbar interface 1 and gradually plugged into the busbar interface 1, it is necessary to make the positioning block 213 at the end of the connecting sleeve 21 engage with the positioning groove 214 on the busbar interface 1, so as to ensure that the engaging groove 11 and the engaging block 22 can be aligned when the connecting sleeve 21 is completely sleeved on the busbar interface 1. At the same time, it can also prevent the rotating sleeve 25 from causing the connecting sleeve 21 to rotate during the rotation process, while the engaging block 22 is not engaged with the engaging groove 11. If the connecting sleeve 21 rotates, it will also cause the engaging block 22 to be misaligned with the engaging groove 11.

[0039] Reference Figure 1-Figure 11 The present invention also relates to a quick-disconnect busbar connection method applicable to a high-voltage switch cabinet, which uses a quick-disconnect busbar connection device applicable to a high-voltage switch cabinet, and the specific steps are as follows: S1, align the connecting sleeve 21 with the busbar interface 1, and then sleeve the connecting sleeve 21 on the busbar interface 1; S2, making the connecting sleeve 21 gradually slide into the bus interface 1, at this time the clamping block 22 is not extended, and the first battery cell 12 and the second battery cell 212 are in a non-contact state; S3. When the snap-in groove 11 overlaps with the sliding groove 211, the connecting sleeve 21 cannot continue to slide relative to the busbar interface 1, and the snap-in block 22 slides out of the sliding groove 211 and snaps into the snap-in groove 11. At this time, the end of the first battery cell 12 contacts the end of the second battery cell 212.

[0040] Working principle: first, the connecting sleeve 21 is sleeved on the busbar interface 1, and then the rotating sleeve 25 is rotated. During the rotation of the rotating sleeve 25, the rotating sleeve 25 moves along the extension direction of the connecting sleeve 21 under the guidance of the thread on the connecting sleeve 21, and the follower ring 262 between the rotating sleeve 25 and the connecting sleeve 21 moves synchronously with the rotating sleeve 25 along the extension direction of the connecting sleeve 21. The follower ring 262 and the guide groove 263 slide in the extension direction of the connecting sleeve 21. Under the restriction of the guide groove 263, the follower ring 262 can only move along the extension direction of the connecting sleeve 21, and the follower ring 262 cannot rotate around its own axis. The torsion spring 261 set between the follower ring 262 and the rotating sleeve 25 is rotated on the rotating sleeve 25. It can shrink or recover and release when rotating. This is because although the follower ring 262 can move along the extension direction of the connecting sleeve 21 when the rotating sleeve 25 rotates, the follower ring 262 and the rotating sleeve 25 are in a synchronous moving state in the extension direction of the connecting sleeve 21. Therefore, the follower ring 262 and the rotating sleeve 25 are in a relatively static state in the extension direction of the connecting sleeve 21, and the rotating sleeve 25 can also rotate around the connecting sleeve 21. In this way, the torsion spring 261, whose two ends are fixedly connected to the follower ring 262 and the rotating sleeve 25 respectively, can shrink or recover when the rotating sleeve 25 rotates. When the rotating sleeve 25 drives the clamping block 22 to be clamped into the clamping groove 11 through the pushing plate 23, the torsion spring 261 is in a contracted state.

[0041] Then, the limit block 252 is engaged with the limit groove 251, so that the torsion spring 261 cannot drive the rotating sleeve 25 to rotate in the opposite direction, thereby preventing the rotating sleeve 25 from rotating and resetting, and also preventing the clamping block 22 from slipping out of the clamping groove 11. At the same time, when the rotating sleeve 25 contacts the limit block 252, there is a misalignment between the limit groove 251 and the limit block 252, and the rotating sleeve 25 moving along the extension direction of the connecting sleeve 21 squeezes the spring 254. With the continuous rotation of the rotating sleeve 25, when the clamping block 22 is clamped into the clamping groove 11, the limit block 252 is aligned with the limit groove 251, and the limit block 252 slides into the limit groove 251 under the action of the spring 254. When the limit block 252 slides into the limit groove 251, a "click" sound will be generated. If a "click" sound is heard during use, it means that the clamping block 22 has been successfully clamped into the clamping groove 11. In the groove 11, if the connection unit 2 needs to be removed from the busbar interface 1, it is only necessary to press the pressure ring 253 so that the limit block 252 slides out of the limit groove 251. At this time, the limit block 252 no longer limits the limit groove 251, and the torsion spring 261 can smoothly drive the rotating sleeve 25 to rotate in the opposite direction, and the rotating sleeve 25 moves toward the side of the busbar interface 1. During the resetting movement of the rotating sleeve 25, the clamping block 22 gradually slides out of the clamping groove 11. When the rotating sleeve 25 stops rotating, the clamping block 22 is completely disengaged from the clamping groove 11, and the connection unit 2 and the busbar interface 1 can be smoothly separated.

[0042] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet, comprising a connection unit (2), a busbar interface (1) having a first battery cell (12) arranged therein; characterized in that: A clamping groove (11) is provided on the side wall of the busbar interface (1), the clamping groove (11) is inclined toward the inside of the busbar interface (1) and faces the connection unit (2), the connection unit (2) comprises a connection sleeve (21) that can be slidably sleeved on the periphery of the busbar interface (1), a second battery cell (212) electrically connected to the first battery cell (12) is provided in the connection sleeve (21), a sliding groove (211) is provided on the inner wall of the connection sleeve (21) parallel to the extension direction of the clamping groove (11), a clamping block (22) is slidably provided in the sliding groove (211) along the extension direction of the sliding groove (211), and when the connection sleeve (21) is completely sleeved on the periphery of the busbar interface (1), the clamping block (22) extends from the sliding groove (211) and is clamped and matched with the clamping groove (11).

2. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet according to claim 1, characterized in that: A connecting rod (24) is arranged on the upper part of the clamping block (22), and a pushing plate (23) is arranged on the outer side of the connecting sleeve (21) to move along the extension direction of the connecting sleeve (21). An inclined groove (231) is formed on the pushing plate (23), and one end of the connecting rod (24) away from the clamping block (22) extends into the inclined groove (231) and slidably cooperates with the inclined groove (231).

3. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet according to claim 2, characterized in that: A rotating sleeve (25) is rotatably arranged on the outer periphery of the connecting sleeve (21), a thread is provided on the outer peripheral wall of the connecting sleeve (21), the rotating sleeve (25) and the connecting sleeve (21) are threadedly matched, the pushing plate (23) is located between the rotating sleeve (25) and the connecting sleeve (21) and is rotatably matched with the rotating sleeve (25), and when the rotating sleeve (25) moves along the extending direction of the connecting sleeve (21), the pushing plate (23) moves synchronously with the rotating sleeve (25).

4. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet according to claim 3, characterized in that: A reset unit (26) for driving the rotating sleeve (25) to reset is arranged on the rotating sleeve (25). The reset unit (26) comprises a follower ring (262) arranged between the rotating sleeve (25) and the connecting sleeve (21). The rotating sleeve (25) and the follower ring (262) are rotationally matched and the follower ring (262) cannot rotate around its own axis. A torsion spring (261) is arranged between the follower ring (262) and the rotating sleeve (25) along the extension direction of the connecting sleeve (21). When the clamping block (22) is clamped with the clamping groove (11), the torsion spring (261) contracts.

5. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet according to claim 4, characterized in that: A guide groove (263) is provided on the outer side wall of the connecting sleeve (21) along the extending direction of the connecting sleeve (21), and the inner ring of the follower ring (262) extends into the guide groove (263) and is slidably matched with the guide groove (263).

6. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet according to claim 3, characterized in that: A limiting groove (251) is provided at the end of the rotating sleeve (25), and a clamping block (22) is provided on one side of the limiting groove (251) and is located on the same circumference as the limiting groove (251); when the clamping block (22) is disengaged from the clamping groove (11), the limiting groove (251) and the limiting block (252) are misaligned; when the clamping block (22) is clamped and engaged with the clamping groove (11), the limiting groove (251) and the limiting block (252) are clamped and engaged.

7. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet according to claim 6, characterized in that: A pressure ring (253) is fixedly arranged on a side of the limit block (252) away from the rotating sleeve (25); the pressure ring (253) is slidably matched with the connecting sleeve (21) along the extension direction of the connecting sleeve (21); an annular gap exists between the pressure ring (253) and the end of the connecting sleeve (21); a spring (254) is arranged in the annular gap along the extension direction of the connecting sleeve (21); and two ends of the spring (254) are fixedly connected to the pressure ring (253) and the end of the connecting pipe, respectively.

8. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet according to claim 6, characterized in that: A rolling ball (2521) is rotatably arranged on the end of the limit block (252) facing the rotating sleeve (25), and the rolling ball (2521) is in rolling engagement with the end of the rotating sleeve (25).

9. A quick-disconnect busbar connection device suitable for a high-voltage switch cabinet according to claim 1, characterized in that: A positioning block (213) is fixedly provided at the end of the connecting sleeve (21), and a positioning groove (214) that is snap-fitted with the positioning block (213) is provided at the end of the busbar interface (1).

10. A method for quickly separating busbars for high-voltage switchgear, using a method for quickly separating busbars for high-voltage switchgear according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1. Align the connecting sleeve (21) with the busbar interface (1), and then sleeve the connecting sleeve (21) onto the busbar interface (1); S2, causing the connecting sleeve (21) to gradually slide into the busbar interface (1), at which point the clamping block (22) does not extend out, and the first battery cell (12) and the second battery cell (212) are in a non-contact state; S3. When the engaging groove (11) and the sliding groove (211) overlap, the connecting sleeve (21) cannot continue to slide relative to the busbar interface (1), the engaging block (22) slides out of the sliding groove (211) and engages with the engaging groove (11), and at this time, the end of the first battery cell (12) contacts the end of the second battery cell (212).

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