A quick-separating busbar connection device and method applicable to high-voltage switchgear

Abstract

The present invention relates to the technical field of conductive connection, and specifically relates to a fast-separating busbar connection device and method applicable to high-voltage switch cabinets. The device includes a connection unit, and a first battery cell is arranged in the busbar interface. A clamping groove is formed on the side wall of the busbar interface, and the clamping groove inclines towards the inside of the busbar interface and faces the connection unit. The connection unit includes a connection sleeve that can be slidably sleeved around the busbar interface. A second battery cell electrically connected to the first battery cell is arranged in the connection sleeve. A sliding groove is formed 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. When the connection sleeve is completely sleeved around the busbar interface, the clamping block extends out of the sliding groove and is in clamping cooperation with the clamping groove, and the first battery cell contacts the second battery cell. The present invention ensures the stability of the busbar connection after connection and also avoids the occurrence of virtual connection.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive connection, and particularly to a quick-separable busbar connection device and method applicable to high-voltage switchgear cabinets. Background Art

[0002] The high-voltage switchgear cabinet includes a current busbar, which is the main current path. Therefore, during installation, it is necessary to avoid loosening. Moreover, many high-voltage switchgear cabinets are generally placed side by side, resulting in the connection of the busbars being prone to entanglement. The entangled busbars have a great impact on maintenance and electrical safety.

[0003] Chinese Patent Publication No. CN211428372U discloses a busbar connection structure for a high-voltage switchgear cabinet, including a connection head. A first busbar is fixedly connected inside the connection head. A conductive rod is fixedly connected to the right side of the first busbar. A plug-in slot is opened on the right side of the connection head. An outer sleeve is sleeved inside the plug-in slot. A joint base is fixedly connected to the right side of the outer sleeve. A circular hole is opened on the left side of the outer sleeve. A second busbar is fixedly connected inside the outer sleeve. Spring grooves are opened at the top and bottom of the joint base. A clamping spring is fixedly connected inside the spring groove. Clamping blocks are fixedly connected to the opposite sides of the two clamping springs. Two clamping grooves are opened inside the connection head. A guiding block is fixedly connected to the right side of the connection head. A vertical through hole is opened at the top of the guiding block. A horizontal through hole is opened on the right side of the guiding block. A first guiding groove is opened at the top of the guiding block. A second guiding groove is opened on the right side of the guiding block. A third guiding groove is opened at the bottom of the guiding block.

[0004] The above solution provides a busbar connection structure. However, the busbar is clamped by the spring groove and the clamping spring, which requires a large elastic force for the clamping spring. After long-term use, the elastic force of the clamping spring is likely to decrease, and then the loosening of the busbar connection occurs, which cannot ensure the tightness of the busbar after connection. During use, it is prone to looseness, which may lead to poor contact, affecting the operation safety and reliability of the equipment. At the same time, it is also easy for the staff to get an electric shock when maintaining the high-voltage switchgear cabinet. Summary of the Invention

[0005] To solve the above problems, a fast-separating busbar connection device and method applicable to high-voltage switch cabinets are provided. By opening a clamping groove on the busbar interface, the clamping groove inclines from the outside to the inside and towards the connection unit along the radial direction of the busbar interface. When the connecting 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 and the clamping groove are clamped and matched, the connection unit and the busbar interface are completely locked, preventing relative movement between the connection unit and the busbar interface, and also avoiding the situation that the connection unit and the busbar interface fall off due to the action of external forces after connection. Furthermore, the situation of virtual connection or disconnection between the busbar interface and the connection unit is avoided. And the inclined clamping groove can reduce the probability of the clamping block bending when receiving the force of mutual separation between the connection unit and the busbar interface after being clamped and matched with the clamping block, ensuring the safety of the staff during daily maintenance, and also avoiding the explosion and combustion phenomenon of the high-voltage switch cabinet due to virtual connection during use.

[0006] To solve the problems of the prior art, the present invention provides a fast-separating busbar connection device applicable to high-voltage switch cabinets, including a connection unit, and a first electric core is arranged in the busbar interface; a clamping groove is opened on the side wall of the busbar interface, the clamping groove inclines towards the inside of the busbar interface and towards the connection unit. The connection unit includes a connecting sleeve that can be slidably sleeved on the periphery of the busbar interface, and a second electric core electrically connected to the first electric core is arranged in the connecting sleeve. A sliding groove is opened on the inner wall of the connecting sleeve parallel to the extending direction of the clamping groove, and a clamping block is slidably arranged in the sliding groove along the extending direction of the sliding groove. When the connecting sleeve is completely sleeved on the periphery of the busbar interface, the clamping block extends out of the sliding groove and is clamped and matched with the clamping groove.

[0007] Preferably, a connecting rod is arranged on the upper part of the clamping block, and a pushing plate is movably arranged on the outside of the connecting sleeve along the extending direction of the connecting sleeve. An inclined groove is opened on the pushing plate, and one end of the connecting rod away from the clamping block extends into the inclined groove and is slidably matched with the inclined groove.

[0008] Preferably, a rotating sleeve is rotatably arranged on the periphery of the connecting sleeve, threads are opened on the outer peripheral wall of the connecting sleeve, the rotating sleeve is in threaded cooperation 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 extending 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 arranged on the rotating sleeve. The reset unit includes a follower ring arranged between the rotating sleeve and the connecting sleeve. The rotating sleeve is rotatably matched with the follower ring and the follower ring cannot rotate around its own axis. A torsion spring is arranged between the follower ring and the rotating sleeve along the extending direction of the connecting sleeve. When the clamping block is clamped with the clamping groove, the torsion spring contracts.

[0010] Preferably, a guiding groove is formed in the outer side wall of the connecting sleeve along the extending direction of the connecting sleeve, and the inner ring of the follower ring extends into the guiding groove and is in sliding fit with the guiding groove.

[0011] Preferably, a limiting groove is arranged at the end of the rotating sleeve, and a clamping block on the same circumference as the limiting groove is arranged on one side of the limiting groove. When the clamping block is disengaged from the clamping groove, the limiting groove is misaligned with the limiting block. When the clamping block is clamped with the clamping groove, the limiting groove is clamped with the limiting block.

[0012] Preferably, a pressure ring is fixedly arranged on the side of the limiting block away from the rotating sleeve. The pressure ring is in sliding fit with the connecting sleeve along the extending 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 extending direction of the connecting sleeve, and the two ends of the spring are respectively fixedly connected with 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 in rolling fit with the end of the rotating sleeve.

[0014] Preferably, a positioning block is fixedly arranged at the end of the connecting sleeve, and a positioning groove for clamping and cooperating with the positioning block is arranged at the end of the bus interface.

[0015] The present invention also relates to a fast-separating bus connection method applicable to high-voltage switch cabinets, adopting a fast-separating bus connection device applicable to high-voltage switch cabinets. The specific steps are as follows:

[0016] S1. Align the connecting sleeve with the bus interface, and then sleeved the connecting sleeve on the bus interface.

[0017] S2. Make the connecting sleeve gradually slide into the bus interface. At this time, the clamping block does not protrude, and the first battery cell and the second battery cell are in a non-contact state.

[0018] S3. When the clamping groove coincides with the sliding groove, the connecting sleeve cannot continue to slide relative to the bus interface. The clamping block slides out of the sliding groove and is clamped with the clamping groove. At this time, the ends of the first battery cell and the second battery cell are in contact.

[0019] The beneficial effects of the present invention compared with the prior art are:

[0020] 1. The present invention opens a clamping groove on the bus interface, such that the clamping groove inclines from the outside to the inside and towards the connection unit along the radial direction of the bus interface. When the connecting sleeve is completely sleeved on the bus interface, the clamping block slidably arranged in the sliding groove slides into the clamping groove. After the clamping block is in clamping fit with the clamping groove, the connection unit and the bus interface are completely locked, preventing relative movement between the connection unit and the bus interface, and also avoiding the situation that the connection unit and the bus interface fall off due to the action of external forces after connection. Furthermore, the situation of virtual connection or disconnection between the bus interface and the connection unit is avoided. And the inclined clamping groove can reduce the probability of the clamping block bending when receiving the force of the connection unit and the bus interface separating from each other after being in clamping fit with the clamping block, ensuring the safety of the staff during daily maintenance, and also avoiding the deflagration phenomenon of the high-voltage switchgear due to virtual connection during use;

[0021] 2. By setting a rotating sleeve and making the rotating sleeve in threaded fit with the connecting sleeve, and at the same time setting a torsion spring on one side of the rotating sleeve, the rotating sleeve can not only push the clamping block into the clamping groove through the pushing plate, but also the restoring elastic force of the torsion spring can drive the rotating sleeve to rotate reversely, enabling the rotating sleeve to rotate and reset by itself. And in order to limit the rotating sleeve, a limiting groove is opened at one end of the rotating sleeve, and a limiting block that can be in clamping fit with the limiting groove is arranged on one side of the limiting groove. After the clamping block is in clamping fit with the clamping groove, the limiting block is also in clamping fit with the limiting groove, preventing the rotating sleeve from being driven to rotate reversely by the torsion spring. When it is necessary to separate the connection unit and the bus interface, just pull the limiting block out of the limiting groove, which not only ensures the stable connection between the bus interface and the connection unit, but also enables the bus interface and the connection unit to be quickly separated when disassembly is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional schematic diagram of the present invention when the clamping block and the clamping groove of a quick-separable bus connection device applicable to a high-voltage switchgear are not in clamping connection;

[0023] Figure 2 is a three-dimensional schematic diagram of the present invention when the clamping block and the clamping groove of a quick-separable bus connection device applicable to a high-voltage switchgear are in complete clamping connection;

[0024] Figure 3 is a side view of the present invention when the clamping groove and the clamping block of a quick-separable bus connection device applicable to a high-voltage switchgear are not in clamping connection;

[0025] Figure 4 is of the present invention for a quick-separable bus connection device applicable to a high-voltage switchgear Figure 3 sectional schematic diagram at A-A;

[0026] Figure 5It is a sectional perspective view when the clamping groove and the clamping block are not clamped in a quick-separating busbar connection device applicable to a high-voltage switch cabinet according to the present invention;

[0027] Figure 6 It is a Figure 5 partial enlarged view at B in a quick-separating busbar connection device applicable to a high-voltage switch cabinet according to the present invention;

[0028] Figure 7 It is a sectional perspective view after the clamping block and the clamping groove are completely clamped in a quick-separating busbar connection device applicable to a high-voltage switch cabinet according to the present invention Figure 1 ;

[0029] Figure 8 It is a sectional perspective view after the clamping block and the clamping groove are completely clamped in a quick-separating busbar connection device applicable to a high-voltage switch cabinet according to the present invention Figure 2 ;

[0030] Figure 9 It is a Figure 8 partial enlarged view at C in a quick-separating busbar connection device applicable to a high-voltage switch cabinet according to the present invention;

[0031] Figure 10 It is a perspective view of a quick-separating busbar connection device applicable to a high-voltage switch cabinet according to the present invention after removing the rotating sleeve;

[0032] Figure 11 It is a perspective view before the busbar interface and the connection unit are connected in a quick-separating busbar connection device applicable to a high-voltage switch cabinet according to the present invention.

[0033] In the figure, the reference numerals are: 1, busbar interface; 11, clamping groove; 12, first battery cell; 2, connection unit; 21, connection sleeve; 211, sliding groove; 212, second battery cell; 213, positioning block; 214, positioning groove; 22, clamping block; 23, push plate; 231, inclined groove; 24, connecting rod; 25, rotating sleeve; 251, limiting groove; 252, limiting block; 2521, rolling ball; 253, pressure ring; 254, spring; 26, reset unit; 261, torsion spring; 262, follower ring; 263, guiding groove. Detailed implementation manners

[0034] To further understand the features, technical means, and the specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0035] Refer to Figures 1 - 6: A fast-separable busbar connection device applicable to high-voltage switchgear, including a connection unit 2. A first battery cell 12 is arranged in the busbar interface 1. A clamping groove 11 is formed on the side wall of the busbar interface 1. The clamping groove 11 inclines towards the inside of the busbar interface 1 and faces the connection unit 2. The connection unit 2 includes a connection sleeve 21 that can slide and sleeve around 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 formed 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 arranged in the sliding groove 211 along the extension direction of the sliding groove 211. When the connection sleeve 21 completely sleeves around the periphery of the busbar interface 1, the clamping block 22 extends out of the sliding groove 211 and is in clamping cooperation with the clamping groove 11.

[0036] When the busbar interface 1 on the traditional high-voltage switchgear is connected to the connection unit 2, in order to ensure the connection stability between the busbar interface 1 and the connection unit 2, a marble clamping method is usually adopted to clamp the busbar interface 1 and the connection unit 2. In the prior art, marbles can be arranged on both the busbar interface 1 and the connection unit 2. If marbles are arranged on the busbar interface 1, corresponding slots need to be arranged on the connection unit 2. Similarly, if marbles are arranged on the connection unit 2, corresponding slots also need to be arranged on the busbar interface 1. After the busbar interface 1 and the connection unit 2 are inserted and matched, the marbles coincide with the slots, and the marbles pop out and are clamped into the slots. However, during the installation process, if one side of the busbar interface 1 or the connection unit 2 is stressed, looseness will occur at the connection between the busbar interface 1 and the connection unit 2, resulting in the marbles being unable to clamp the two normally. This is because when the marbles are clamped with the slots, the marbles cannot lock the busbar interface 1 and the connection unit 2 through the slots. When the busbar interface 1 and the connection unit 2 are subjected to two pulling forces away from each other, the marbles will slide out of the slots, resulting in easy disconnection or virtual connection of the busbar interface 1 and the connection unit 2 during installation. In the high-voltage switchgear, the voltage is high and the current is large. If there is a virtual connection between the busbar interface 1 and the connection unit 2, it will lead to unstable current transmission, which not only easily causes damage to related electrical components in the high-voltage switchgear, but also easily causes fires. At the same time, when the staff conducts daily maintenance on the high-voltage switchgear, it is also easy to cause casualties due to accidental touch.

[0037] To avoid the above situation, the structure of the existing connecting device is redesigned so that after the bus interface 1 is connected to the connecting unit 2, the bus interface 1 and the connecting unit 2 are completely locked, preventing the bus interface 1 and the connecting unit 2 from having loose connections or disconnections during connection. The specific structure and working process of the connecting unit 2 are as follows: During connection, align the connecting unit 2 with the bus interface 1 so that the axis of the connecting sleeve 21 is collinear with the axis of the bus structure. Then, slip the connecting sleeve 21 over the bus interface 1. At this time, the clamping block 22 is located within the sliding groove 211. When the connecting sleeve 21 is fully slipped over the bus interface 1, the sliding groove 211 coincides with the clamping groove 11. The clamping block 22 within the sliding groove 211 extends out of the sliding groove 211 and slides into the clamping groove 11. After the clamping block 22 and the clamping groove 11 are engaged, the connection operation between the bus interface 1 and the connecting unit 2 is completed. At this time, the clamping groove 11 provided on the bus interface 1 inclines from the outside to the inside along the radial direction of the bus interface 1 and towards the connecting unit 2, and a part of the clamping block 22 engaged with the clamping groove 11 still remains within the sliding groove 211. At the same time, before the connecting unit 2 and the bus interface 1 are sleeved with each other, the second electric core 212 within the connecting sleeve 21 and the first electric core 12 on the bus interface 1 are in a non-contact state. Only after the connecting unit 2 and the bus interface 1 are sleeved with each other does the first electric core 12 plug and connect with the second electric core 212. Since the connecting unit 2 and the bus interface 1 are sleeved with each other and then locked by the engagement of the clamping groove 11 and the clamping block 22, and at the same time, the plug-connected first electric core 12 and second electric core 212 improve the stability during electrical connection, preventing loose connections between the bus interface 1 and the connecting unit 2, and further avoiding loose connections or disconnections between the bus interface 1 and the connecting unit 2.

[0038] By providing the clamping groove 11 on the bus interface 1 such that the clamping groove 11 inclines from the outside to the inside along the radial direction of the bus interface 1 and towards the connecting unit 2, when the connecting sleeve 21 is fully slipped over the bus interface 1, the clamping block 22 slidably disposed within the sliding groove 211 slides into the clamping groove 11. After the clamping block 22 and the clamping groove 11 are engaged, the connecting unit 2 and the bus interface 1 are completely locked, preventing relative movement between the connecting unit 2 and the bus interface 1 and also avoiding disengagement of the connecting unit 2 and the bus interface 1 due to external forces after connection, thus further avoiding loose connections or disconnections between the bus interface 1 and the connecting unit 2. Moreover, the inclined clamping groove 11 can reduce the probability of the clamping block 22 bending when subjected to the force of the connecting unit 2 and the bus interface 1 separating from each other after engagement, ensuring the safety of the staff during daily maintenance and also avoiding the explosion and combustion phenomenon of the high-voltage switchgear due to loose connections during use.

[0039] 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 movably arranged on the outer side of the connecting sleeve 21 along the extending 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 is in sliding fit with the inclined groove 231.

[0040] When the connecting sleeve 21 is completely sleeved on the bus interface 1, the pushing plate 23 arranged on the connecting sleeve 21 moves on one side of the connecting sleeve 21. 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 of 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.

[0041] Reference Figure 11 : A rotating sleeve 25 is rotatably arranged on the periphery of the connecting sleeve 21. Threads are provided on the outer peripheral wall of the connecting sleeve 21. The rotating sleeve 25 is in threaded fit with the connecting sleeve 21. The pushing plate 23 is located between the rotating sleeve 25 and the connecting sleeve 21 and is in rotational fit with the rotating sleeve 25. 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.

[0042] Since the rotating sleeve 25 is in threaded fit with the connecting sleeve 21, when the connecting sleeve 21 is sleeved on the bus interface 1, the rotating sleeve 25 does not rotate. When the connecting sleeve 21 is completely connected to the bus interface 1, that is, the connecting sleeve 21 cannot continue to slide towards the bus interface 1. At this time, the rotating sleeve 25 is rotated. The rotating sleeve 25 gradually moves towards the side away from the bus interface 1 under the guidance of the threads of the connecting sleeve 21. The rotating sleeve 25 drives the pushing plate 23 to move synchronously along the extending direction of the connecting sleeve 21. The inclined groove 231 arranged on the pushing plate 23 can push the connecting rod 24, and further enable the clamping block 22 and the clamping groove 11 to be clamped and matched.

[0043] Reference Figure 8 and Figure 9 : A reset unit 26 for driving the rotating sleeve 25 to reset is provided on the rotating sleeve 25. The reset unit 26 includes a follower ring 262 arranged between the rotating sleeve 25 and the connecting sleeve 21. The rotating sleeve 25 is in rotational fit 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 extending direction of the connecting sleeve 21. When the clamping block 22 is clamped with the clamping groove 11, the torsion spring 261 contracts.

[0044] Reference Figure 7 and Figure 9: A guiding groove 263 is formed on the outer side wall of the connecting sleeve 21 along the extending direction of the connecting sleeve 21. The inner ring of the follower ring 262 extends into the guiding groove 263 and is in sliding fit with the guiding groove 263.

[0045] During the rotation of the rotating sleeve 25, the rotating sleeve 25 moves along the extending direction of the connecting sleeve 21 under the guidance of the thread on the connecting sleeve 21. The follower ring 262 between the rotating sleeve 25 and the connecting sleeve 21 moves synchronously along the extending direction of the connecting sleeve 21 with the rotating sleeve 25. The follower ring 262 and the guiding groove 263 are in sliding fit along the extending direction of the connecting sleeve 21. Under the limitation of the guiding groove 263, the follower ring 262 can only move along the extending direction of the connecting sleeve 21 and cannot rotate around its own axis. The torsion spring 261 arranged between the follower ring 262 and the rotating sleeve 25 can contract or restore and release when the rotating sleeve 25 rotates. This is because although the follower ring 262 can move along the extending direction of the connecting sleeve 21 when the rotating sleeve 25 rotates, since the follower ring 262 and the rotating sleeve 25 are in a synchronous moving state along the extending direction of the connecting sleeve 21, the follower ring 262 and the rotating sleeve 25 are in a relatively static state along the extending direction of the connecting sleeve 21, while the rotating sleeve 25 can still rotate around the connecting sleeve 21. Thus, the torsion spring 261 fixedly connected to the follower ring 262 and the rotating sleeve 25 at both ends can contract or restore 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.

[0046] Refer to Figure 10 and Figure 11 : A limiting groove 251 is arranged at the end of the rotating sleeve 25. A clamping block 22 is arranged on one side of the limiting groove 251 and is 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 in clamping fit with the clamping groove 11, the limiting groove 251 and the limiting block 252 are in clamping fit.

[0047] After 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 rotating in the reverse direction under the action of the torsion spring 261, a limiting groove 251 is arranged 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 reverse direction, thereby avoiding the rotation and reset of the rotating sleeve 25 and also avoiding the clamping block 22 slipping out of the clamping groove 11.

[0048] Refer to Figure 10 and Figure 11:A pressure ring 253 is fixedly arranged on the side of the limit block 252 away from the rotating sleeve 25. The pressure ring 253 is in sliding fit with the connecting sleeve 21 along the extending direction of the connecting sleeve 21. There is an annular gap between the pressure ring 253 and the end of the connecting sleeve 21. The spring 254 is arranged in the annular gap along the extending direction of the connecting sleeve 21, and both ends of the spring 254 are fixedly connected to the pressure ring 253 and the end of the connecting pipe respectively.

[0049] The pressure ring 253 is in sliding fit 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 towards the limit block 252 along the extending 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 inserted 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 occur. When using, if the "click" sound is heard, 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 bus interface 1, only need 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 drive the rotating sleeve 25 to rotate in the reverse direction smoothly. The rotating sleeve 25 moves towards the side of the bus interface 1. During the reset 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 connecting unit 2 and the bus interface 1 can be separated smoothly.

[0050] Refer to Figure 10 :A rolling ball 2521 is rotatably arranged on the end of the limit block 252 facing the rotating sleeve 25. The rolling ball 2521 is in rolling fit with the end of the rotating sleeve 25.

[0051] In this way, the friction coefficient between the rotating sleeve 25 and the limit block 252 during rotation is reduced, and the wear between the limit block 252 and the rotating sleeve 25 is reduced.

[0052] Refer to Figure 11 :A positioning block 213 is fixedly arranged at the end of the connecting sleeve 21, and a positioning groove 214 that is in clamping fit with the positioning block 213 is arranged at the end of the bus interface 1.

[0053] When the connection sleeve 21 is sleeved on the bus interface 1 and gradually inserted into the bus interface 1, it is necessary to make the positioning block 213 at the end of the connection sleeve 21 engage with the positioning groove 214 on the bus interface 1, so as to ensure that the clamping groove 11 and the clamping block 22 can be aligned when the connection sleeve 21 is completely sleeved on the bus interface 1, and at the same time, it can prevent the connection sleeve 21 from rotating when the rotating sleeve 25 rotates. At this time, the clamping block 22 is not engaged with the clamping groove 11. If the connection sleeve 21 rotates, it will also cause the clamping block 22 and the clamping groove 11 to be misaligned.

[0054] Refer to Figures 1 - 11 : The present invention also relates to a fast-separating bus connection method applicable to high-voltage switch cabinets, adopting a fast-separating bus connection device applicable to high-voltage switch cabinets. The specific steps are as follows:

[0055] S1. Align the connection sleeve 21 with the bus interface 1, and then sleeve the connection sleeve 21 on the bus interface 1;

[0056] S2. Make the connection sleeve 21 gradually slide into the bus interface 1. At this time, the clamping block 22 does not protrude, and the first battery cell 12 and the second battery cell 212 are in a non-contact state;

[0057] S3. When the clamping groove 11 coincides with the sliding groove 211, the connection sleeve 21 cannot continue to slide relative to the bus interface 1. The clamping block 22 slides out of the sliding groove 211 and engages with the clamping groove 11. At this time, the end of the first battery cell 12 contacts the end of the second battery cell 212.

[0058] Working principle: First, the connecting sleeve 21 is sleeved on the bus interface 1. Subsequently, 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. The follower ring 262 between the rotating sleeve 25 and the connecting sleeve 21 synchronously moves along the extension direction of the connecting sleeve 21 with the rotating sleeve 25. The follower ring 262 and the guiding groove 263 are in sliding fit along the extension direction of the connecting sleeve 21. Under the limitation of the guiding groove 263, the follower ring 262 can only move along the extension direction of the connecting sleeve 21 and cannot rotate around its own axis. The torsion spring 261 arranged between the follower ring 262 and the rotating sleeve 25 can contract or restore and release when the rotating sleeve 25 rotates. 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, since the follower ring 262 and the rotating sleeve 25 are in a synchronous moving state along the extension direction of the connecting sleeve 21, the follower ring 262 and the rotating sleeve 25 are in a relatively static state along the extension direction of the connecting sleeve 21, while the rotating sleeve 25 can still rotate around the connecting sleeve 21. Thus, the torsion spring 261 fixedly connected to the follower ring 262 and the rotating sleeve 25 at both ends can contract or restore 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.

[0059] Subsequently, the limiting block 252 is clamped into the limiting groove 251, so that the torsion spring 261 cannot drive the rotating sleeve 25 to rotate in the reverse direction, thereby avoiding the rotation and reset of the rotating sleeve 25 and also avoiding the slippage of the clamping block 22 from the clamping groove 11. At the same time, when the rotating sleeve 25 contacts the limiting block 252, there is a dislocation between the limiting groove 251 and the limiting block 252. The rotating sleeve 25 moving along the extension direction of the connecting sleeve 21 presses the spring 254. As the rotating sleeve 25 continues to rotate, when the clamping block 22 is clamped into the clamping groove 11, the limiting block 252 is aligned with the limiting groove 251, and the limiting block 252 slides into the limiting groove 251 under the action of the spring 254. When the limiting block 252 slides into the limiting groove 251, a "click" sound will occur. When in use, if the "click" sound is heard, it indicates 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 bus interface 1, only need to press the pressure ring 253 so that the limiting block 252 slides 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 drive the rotating sleeve 25 to rotate in the reverse direction smoothly. The rotating sleeve 25 moves towards the side of the bus interface 1. During the reset 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 connecting unit 2 and the bus interface 1 can be separated smoothly.

[0060] The above embodiments only represent one or several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, 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 appended claims.

Claims

1. A quick-separable busbar connection device applicable to high-voltage switch cabinets, comprising a connection unit (2), and a first battery cell (12) is arranged in a busbar interface (1); characterized in that, A clamping groove (11) is formed on the side wall of the busbar interface (1). The clamping groove (11) inclines towards the inside of the busbar interface (1) and faces the connecting unit (2). The connecting unit (2) includes a connecting sleeve (21) that can be slidably sleeved around the periphery of the busbar interface (1). A second battery cell (212) electrically connected to the first battery cell (12) is arranged inside the connecting sleeve (21). A sliding groove (211) is formed on the inner wall of the connecting sleeve (21) parallel to the extending direction of the clamping groove (11). A clamping block (22) is slidably arranged in the sliding groove (211) along the extending direction of the sliding groove (211). When the connecting sleeve (21) is completely sleeved around the periphery of the busbar interface (1), the clamping block (22) extends out of the sliding groove (211) and is in clamping fit with the clamping groove (11). A connecting rod (24) is arranged on the upper part of the clamping block (22). A pushing plate (23) is movably arranged on the outside of the connecting sleeve (21) along the extending direction of the connecting sleeve (21). An inclined groove (231) is formed on the pushing plate (23). One end of the connecting rod (24) far from the clamping block (22) extends into the inclined groove (231) and is in sliding fit with the inclined groove (231). A rotating sleeve (25) is rotatably arranged around the periphery of the connecting sleeve (21). A thread is formed on the outer peripheral wall of the connecting sleeve (21). The rotating sleeve (25) is in threaded fit with the connecting sleeve (21). The pushing plate (23) is located between the rotating sleeve (25) and the connecting sleeve (21) and is in rotational fit with the rotating sleeve (25). 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). A reset unit (26) for driving the rotating sleeve (25) to reset is arranged on the rotating sleeve (25). The reset unit (26) includes a follower ring (262) arranged between the rotating sleeve (25) and the connecting sleeve (21). The rotating sleeve (25) is in rotational fit 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 extending direction of the connecting sleeve (21). When the clamping block (22) is in clamping fit with the clamping groove (11), the torsion spring (261) contracts. A limiting groove (251) is formed at the end of the rotating sleeve (25). A clamping block (22) 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) is misaligned with the limiting block (252). When the clamping block (22) is in clamping fit with the clamping groove (11), the limiting groove (251) is in clamping fit with the limiting block (252).

2. The quick-separation busbar connection device applicable to high-voltage switchgear according to claim 1, characterized in that, A guiding groove (263) is formed on the outer side wall of the connecting sleeve (21) along the extending direction of the connecting sleeve (21). The inner ring of the follower ring (262) extends into the guiding groove (263) and is in sliding fit with the guiding groove (263).

3. The quick-separation busbar connection device applicable to high-voltage switchgear according to claim 1, characterized in that, A pressure ring (253) is fixedly arranged on the side of the limiting block (252) away from the rotating sleeve (25). The pressure ring (253) is slidably engaged 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 both ends of the spring (254) are fixedly connected with the pressure ring (253) and the end of the connecting pipe respectively.

4. The quick-separable busbar connection device applicable to high-voltage switch cabinets according to claim 1, wherein, A rolling ball (2521) is rotatably arranged on the end of the limiting block (252) facing the rotating sleeve (25). The rolling ball (2521) is in rolling engagement with the end of the rotating sleeve (25).

5. The quick-separation busbar connection device applicable to high-voltage switch cabinets according to claim 1, wherein A positioning block (213) is fixedly arranged at the end of the connecting sleeve (21), and a positioning groove (214) engaged with the positioning block (213) is arranged at the end of the bus interface (1).

6. A rapid separation type bus connection method applicable to high-voltage switch cabinets, which adopts a rapid separation type bus connection device applicable to high-voltage switch cabinets described in any one of claims 1-5, and is characterized in that, The specific steps are as follows: S1. Align the connecting sleeve (21) with the bus interface (1), and then sleuth the connecting sleeve (21) on the bus interface (1). S2. Make the connecting sleeve (21) gradually slide into the bus interface (1). At this time, the clamping block (22) does not protrude, and the first battery cell (12) and the second battery cell (212) are in a non-contact state. S3. When the clamping groove (11) coincides with the sliding groove (211), the connecting sleeve (21) cannot continue to slide relative to the bus interface (1). The clamping block (22) slides out of the sliding groove (211) and is clamped with the clamping groove (11). At this time, the end of the first battery cell (12) is in contact with the end of the second battery cell (212).

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