Valve device with padlock and switch cabinet

Abstract

The utility model relates to the field of handcart type switch devices, in particular to a valve device with a padlock and a switch cabinet. The padlock mechanism is used for solving the problem that an existing padlock mechanism is arranged on a valve, a worker needs to operate the padlock mechanism on the valve in a cabinet, and the risk of electric shock exists. The valve device with the padlock comprises a valve frame, a valve and a transmission mechanism are arranged on the valve frame, the transmission mechanism is provided with an action input component used for being matched with a circuit breaker handcart so as to transmit actions to the valve when the circuit breaker handcart is pushed, and the valve frame further comprises a handcart guide rail. A blocking and locking piece is movably arranged at the position, close to the front end, of the handcart guide rail, the blocking and locking piece has an unlocking state and a locking state for avoiding or blocking the circuit breaker handcart, and a padlock structure is arranged on the blocking and locking piece and is kept in the locking state after padlock. The blocking lock piece is arranged at the front end position of the handcart guide rail, so that a worker is prevented from entering the cabinet to be in contact with a valve which is possibly electrified, the operation is convenient, and the safety is improved at the same time.

Description

Technical Field

[0001] The utility model relates to the field of switchgear of trolley type, in particular to a shutter device with a padlock and a switchgear cabinet. Background Art

[0002] A switchgear cabinet is a commonly used power transmission and distribution equipment. Most of the existing switchgear cabinets are provided with a shutter closing and opening structure. When the movable circuit breaker trolley is in a normal operation state, the circuit breaker trolley is connected to the static contact main circuit. When power needs to be cut off or maintenance is to be carried out, the circuit breaker trolley is disconnected from the static contact and retracted to the test position or outside the switchgear cabinet, and the originally opened upper and lower shutters of the shutter mechanism are closed, sealing and isolating the live static contacts to ensure the safety of maintenance personnel entering the cabinet for maintenance. The Chinese utility model patent with the authorization publication number of CN202210640U discloses a floor-mounted switchgear cabinet shutter device. The floor-mounted switchgear cabinet shutter device has an upper shutter, a lower shutter and a support plate with a chute. Fixed shafts are arranged on the sides of the upper shutter and the lower shutter, and the fixed shafts are placed in the chutes of the shutter plates and can move up and down along the chutes. It also includes a driving mechanism for driving the upper and lower shutters to slide up and down in the chutes. The driving device includes a driving base arranged in front of the shutter. A driving block is hinged on the driving base. A horizontal connecting rod is hinged to the driving block. The other end of the connecting rod is hinged to a driving link. The bottom of the driving link is fixedly connected to a transmission rotating shaft passing through the driving base. When the driving block rotates, it drives the connecting rod, the driving link and the transmission rotating shaft to move, and transmits the movement to the upper shutter and the lower shutter through the subsequent transmission structure. When the circuit breaker trolley does not enter the switchgear cabinet, that is, in the non-working position, the lower shutter and the upper shutter are closed to seal and isolate the live static contacts; when the circuit breaker trolley moves to the test position, the circuit breaker trolley enters the switchgear cabinet (the locking pin on the circuit breaker trolley) just contacts the driving block but does not drive the driving block, and at this time the upper shutter and the lower shutter are still closed; when the circuit breaker trolley continues to move forward to the working state, the circuit breaker trolley drives the driving block, and through the transmission mechanism, the upper shutter and the lower shutter move, and finally the shutter opens, and the circuit breaker trolley also closes with the static contact; when the circuit breaker trolley leaves the driving mechanism to the non-working position, a return spring is arranged inside the driving device to reset the shutter device, and finally the upper shutter and the lower shutter are closed. Among them, the switchgear cabinet is not provided with a locking mechanism. If the circuit breaker trolley is pushed in without authorization or not in accordance with the normal working process, the circuit breaker trolley will be conducted with the static contact behind the shutter, affecting the on-off of the switchgear cabinet line.

[0003] In order to solve the above problems, many switch cabinets in the industry now have padlock mechanisms on their valve devices, and the padlock mechanisms are set on the valves. When the circuit breaker trolley needs to be in a non-working position, the padlock mechanism can be locked, thereby preventing the valve from opening and preventing the circuit breaker trolley from closing with the static contact behind the valve due to the accidental operation of the circuit breaker trolley. However, the padlock mechanism is located on the valve plate inside the cabinet, and the staff needs to enter the cabinet to padlock the valve plate. If the switch cabinet is energized, there is a risk of electric shock when padlocking. Utility Model Content

[0004] The purpose of the utility model is to provide a valve device with a padlock, so as to solve the problem that the padlock mechanism of the valve device of the prior art is set on the valve, and the staff needs to enter the switch cabinet to operate on the valve when unlocking and padlocking, and there is a risk of electric shock if the switch cabinet is energized. The purpose of the utility model is also to provide a switch cabinet, so as to solve the problem that the padlock mechanism of the valve device of the switch cabinet is set on the valve, and the staff needs to enter the switch cabinet to operate on the valve when unlocking and padlocking, and there is a risk of electric shock if the switch cabinet is energized.

[0005] The utility model discloses a valve device with a padlock, comprising a valve frame, a valve being arranged on the valve frame at the front side of a static contact, a transmission mechanism being arranged on the valve frame, the transmission mechanism having an action input component for cooperating with a circuit breaker trolley so as to transmit the action to the valve to realize the opening of the valve during the process of the circuit breaker trolley being pushed from the outermost side to the inner side, the valve frame also comprising a trolley guide rail for guiding the circuit breaker trolley, the action input component being arranged at the trolley guide rail, a blocking lock component being movably arranged at a position close to the front end of the trolley guide rail, the blocking lock component having an unlocking state for avoiding the circuit breaker trolley during its activity, and a locking state for stopping the circuit breaker trolley from moving backward and contacting the action input component, a padlock structure being arranged on the blocking lock component and being kept in the locked state after being padlocked on the padlock structure.

[0006] The utility model proposes a new technical solution to the problem that the padlock mechanism of the valve device in the prior art is set on the valve, and the staff needs to enter the switch cabinet to operate on the valve when unlocking and padlocking. If the switch cabinet is energized, there is a risk of electric shock. A blocking lock member with a padlock structure is movably arranged near the front end of the trolley rail. The blocking lock member can block or avoid the backward movement of the circuit breaker trolley in the padlocked state and the unlocked state. The blocking lock member is arranged near the front end of the trolley rail to facilitate the staff to operate, avoid the staff from entering the cabinet and contacting the valve that may be energized, and improve the safety of padlocking and unlocking operations.

[0007] Further, a driving base is arranged on the trolley guide rail. The driving base includes a fixed vertical plate. The blocking and locking member is rotatably arranged on the fixed vertical plate around a horizontal axis, and switches between an unlocked state and a locked state through swinging. A padlock structure is arranged at one end of the blocking and locking member, and after being padlocked, it abuts against the top of the fixed vertical plate to keep the blocking and locking member in the locked state. The other end of the blocking and locking member blocks the circuit breaker trolley.

[0008] Further, the fixed vertical plate includes a plate body and a horizontal flanging arranged on the top edge of the plate body. An avoidance opening is arranged on the horizontal flanging for the padlock structure of the blocking and locking member to pass through and extend to the upper side of the horizontal flanging. After the padlock structure is padlocked, the padlock abuts against the horizontal flanging.

[0009] Further, the blocking and locking member is a long strip plate, and the rotation assembly position of the blocking and locking member and the fixed vertical plate is close to the padlock structure, so that one end of the long strip plate is upwardly warped under the action of gravity and abuts against the horizontal flanging.

[0010] Further, the padlock structure is arranged at the rear end of the blocking and locking member. The front end of the blocking and locking member is used to block the circuit breaker trolley. The front end of the blocking and locking member has a front sliding surface that slides over the locking pin of the circuit breaker trolley when the circuit breaker trolley is pushed backward. The edge of the avoidance opening blocks the rear end of the blocking and locking member to keep the sliding surface in a position directly opposite to the locking pin of the circuit breaker trolley before and after.

[0011] Further, a rear sliding surface is arranged at the rear side of the front sliding surface of the blocking and locking member, which slides over the locking pin of the circuit breaker trolley when the circuit breaker trolley exits from the back to the front.

[0012] On the other hand, the present utility model provides a switch cabinet, which includes a cabinet body, a circuit breaker trolley, and a shutter device. The shutter device includes a shutter frame. A shutter is arranged on the shutter frame in front of the static contact. A transmission mechanism is arranged on the shutter frame. The transmission mechanism has an action input component for cooperating with the circuit breaker trolley to transmit the action to the shutter to open the shutter during the process of the circuit breaker trolley being pushed inward from the outermost side. The shutter frame further includes a trolley guide rail for guiding the circuit breaker trolley. The action input component is arranged at the trolley guide rail. A blocking and locking member is movably arranged at a position close to the front end of the trolley guide rail. The blocking and locking member has an unlocked state to avoid the circuit breaker trolley during its movement, and also has a locked state to block the circuit breaker trolley from moving backward and contacting the action input component. A padlock structure is arranged on the blocking and locking member, and it remains in the locked state after being padlocked on the padlock structure.

[0013] The present utility model addresses the problem that in the prior art, the padlock mechanism of the shutter device of the switchgear cabinet is arranged on the shutter. When unlocking and padlocking, the staff needs to enter the switchgear cabinet to operate on the shutter. If the switchgear cabinet is energized, there is a risk of electric shock, and a new technical solution is proposed. A blocking lock member with a padlock structure is movably arranged at a position near the front end of the trolley guide rail. The blocking lock member can block or avoid the backward movement of the circuit breaker trolley in the padlocked state and the unlocked state. By arranging the blocking lock member at a position near the front end of the trolley guide rail, it is convenient for the staff to operate, avoiding the staff entering the cabinet and contacting the potentially energized shutter, and improving the safety of padlocking and unlocking operations.

[0014] Further, a driving base is arranged on the trolley guide rail. The driving base includes a fixed vertical plate. The blocking lock member is rotatably arranged on the fixed vertical plate around a horizontal axis, and switches between the unlocked state and the locked state through swinging. The padlock structure is arranged at one end of the blocking lock member, and after padlocking, it abuts against the top of the fixed vertical plate to keep the blocking lock member in the locked state. The other end of the blocking lock member blocks the circuit breaker trolley.

[0015] Further, the fixed vertical plate includes a plate body and a horizontal flanging arranged on the top edge of the plate body. An avoidance opening is arranged on the horizontal flanging for the padlock structure of the blocking lock member to pass through and extend to the upper side of the horizontal flanging. After padlocking on the padlock structure, the padlock abuts against the horizontal flanging.

[0016] Further, the blocking lock member is a long strip plate, and the rotational assembly position of the blocking lock member and the fixed vertical plate is close to the padlock structure, so that one end of the long strip plate where the padlock structure is located is tilted upward under the action of gravity and abuts against the horizontal flanging. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the blocking lock member in the padlocked state in the shutter device with a padlock of the present utility model when the circuit breaker trolley is in the non - working position;

[0018] Figure 2 For Figure 1 Partial enlarged view of A;

[0019] Figure 3 It is a three - dimensional view of the blocking lock member after unlocking in the shutter device with a padlock of the present utility model when the circuit breaker trolley is in the non - working position;

[0020] Figure 4 It is a schematic structural diagram of the shutter device with a padlock of the present utility model when the circuit breaker trolley is in the test position;

[0021] Figure 5 For Figure 4 Partial enlarged view of B;

[0022] Figure 6Schematic diagram of the valve device with a padlock of the present invention when the circuit breaker trolley is in the working position;

[0023] Figure 7 It is Figure 6 Partial enlarged view at C;

[0024] Figure 8 Three-dimensional view of the valve device with a padlock of the present invention when the circuit breaker trolley is in the working position;

[0025] Figure 9 Front view of the valve device with a padlock of the present invention;

[0026] Figure 10 Schematic diagram of the locking member of the valve device with a padlock of the present invention;

[0027] Figure 11 Schematic diagram of the valve of the valve device with a padlock of the present invention;

[0028] Figure 12 Schematic diagram of the cooperation between the slider and the slide rail on the valve support of the valve device with a padlock of the present invention.

[0029] In the figure: 1, upper valve; 2, first connecting rod; 3, second connecting rod; 4, support; 5, third connecting rod; 6, connecting rod; 7, driving connecting rod; 8, return spring; 9, locking member; 10, driving block; 11, driving block pin shaft; 12, driving base; 13, fourth connecting rod; 14, fifth connecting rod; 15, lower valve; 16, slide rail; 17, valve support; 18, valve plate; 19, bolt; 20, slider; 21, lock ear; 22, padlock; 23, locking pin; 24, trolley guide rail; 25, limit pin; 26, rotating shaft. Specific embodiments

[0030] In existing switch cabinets, a padlock mechanism is often provided on the valve of the valve device. When the circuit breaker trolley needs to be in the non - working position, the padlock mechanism can be padlocked, thus avoiding the opening of the valve and also avoiding the misoperation of the circuit breaker trolley, which may cause the circuit breaker trolley to close with the contacts behind the valve. Among them, the padlock mechanism is located on the valve plate inside the cabinet, and it requires the staff to enter the cabinet to padlock on the valve plate. If the switch cabinet is energized, there is a risk of electric shock during padlocking.

[0031] The utility model proposes a new technical solution to the problems existing in the above technical solutions. The core concept of the utility model is: a blocking lock with a padlock structure is movably arranged at the front end of the trolley rail, and the blocking lock can block or avoid the circuit breaker trolley from moving backward in the padlocked state and the unlocked state. The blocking lock is arranged near the front end of the trolley rail to facilitate the operation of the staff, avoid the staff from entering the cabinet and contacting the valve that may be energized, and improve the safety of padlocking and unlocking operations.

[0032] Based on the above utility model concept, a valve device with a padlock of the utility model includes a valve frame, and a valve is arranged on the valve frame on the front side of the static contact. The valve frame in this embodiment includes the following parts on both sides of the valve: Figure 3 The slide rail 16 shown in the figure, the valve includes Figure 9 , Figure 11 The valve plate 18 shown in the figure has two sides through which Figure 12 The bolt 19 shown is connected to the valve bracket 17, and a slider 20 is provided at the bottom of the valve bracket 17. The slider 20 at the bottom of the valve bracket 17 can cooperate with the slide rail 16, and there are two valves, which are divided into an upper valve 1 and a lower valve 15. When the upper valve 1 and the lower valve 15 are closed, the static contact can be shielded to prevent the circuit breaker trolley from closing with the static contact. In addition, in other embodiments, support plates can be provided on both sides of the static contact, and slide grooves can be provided on the support plates. Fixed shafts are provided on both sides of the upper valve and the lower valve, and the fixed shafts are placed in the slide grooves so that the upper valve and the lower valve can move along the slide grooves.

[0033] A transmission mechanism is provided on the valve frame. The transmission mechanism has an action input component for cooperating with the circuit breaker trolley to transmit the action to the valve to open the valve when the circuit breaker trolley is pushed from the outermost side to the inner side. The action input component in this embodiment is Figure 1 The hook-shaped driving block 10 shown in the figure is hinged on the trolley guide rail through the driving block pin 11. When the circuit breaker trolley moves forward, the locking pin 23 on the circuit breaker trolley presses the driving block 10 to rotate, and the structure behind the driving block 10 transmits the movement to the valve. The valve frame also includes a guide for guiding the circuit breaker trolley as shown in the figure. Figure 3 , Figure 6 The trolley guide rail 24 shown in the figure, the action input component, i.e., the drive block 10, is arranged on the trolley guide rail 24, and the blocking lock 9 has an unlocked state to avoid the circuit breaker trolley during its activity, and also has a locked state to prevent the circuit breaker trolley from moving backward and contacting the action input component. The blocking lock 9 is provided with a padlock structure and remains in the locked state after being padlocked on the padlock structure. The existence of the blocking lock 9 prevents the circuit breaker trolley from being pushed forward without permission or authorization, and also prevents the circuit breaker trolley from being accidentally operated, resulting in the circuit breaker trolley and the static contact behind the valve being closed. The padlock structure of this embodiment is provided on the blocking lock 9 as shown in the figure. Figure 2The shown locking lug 21 and the use of the hanging lug make the locked state obvious at a glance, enabling the operator to quickly determine whether the valve device is in the locked state. At the same time, the anti-lock member 9 is arranged at a position near the front end of the trolley guide rail 24, which is convenient for the staff to operate, avoids the staff entering the cabinet and contacting the possibly energized valve, and improves the safety of the padlock and unlocking operations.

[0034] When the circuit breaker trolley is in the non-working position, as Figure 1 shown, a padlock 22 can be hung on the padlock mechanism, making the circuit breaker trolley unable to be pushed forward; when the padlock mechanism is unlocked, the circuit breaker trolley can be pushed forward to reach the test position. At this time, as Figure 4 、 Figure 5 shown, the locking pin 23 of the circuit breaker trolley contacts the driving block 10 but does not press the driving block 10, and the upper valve 1 and the lower valve 15 still remain in the closed state; when the circuit breaker trolley continues to move forward, as Figure 6 、 Figure 7 、 Figure 8 shown, the circuit breaker locking pin 23 of the circuit breaker trolley presses the driving block 10 to rotate, and the driving block transmits the movement to the upper valve 1 and the lower valve 15 through the structure behind it, and the upper valve 1 and the lower valve 15 open, and the circuit breaker trolley and the static contact can be closed.

[0035] In this embodiment, a driving base 12 as Figure 1 shown is arranged on the trolley guide rail 24. The driving base 12 includes a fixed vertical plate. The anti-lock member 9 is rotatably arranged on the fixed vertical plate around a horizontal axis and realizes the switching between the unlocked state and the locked state through swinging. The padlock structure, that is, the locking lug 21, is arranged at one end of the anti-lock member 9. On one side of the padlock structure, that is, the locking lug 21, of the anti-lock member 9 in this embodiment, there is provided as Figure 10The shown rotating assembly shaft is rotatably installed on the driving base 12 through the rotating assembly shaft. Of course, assembly holes can also be provided on the locking member 9 and the driving base 12, and the two can be rotatably connected through a pin shaft. In this way, the flexibility of the locking member 9 is improved, enabling the locking member 9 to swing more smoothly to avoid or block the advancement of the locking pin 23 of the circuit breaker trolley. The padlock structure is stopped against the top of the fixed vertical plate after the padlock is locked, keeping the locking member in the locked state, and the other end of the locking member stops the circuit breaker trolley. In this way, the locking member 9 cannot swing to avoid the locking pin 23 of the circuit breaker trolley, improving the reliability of the locking member 9. In addition, in other embodiments, the locking member can be installed on the driving base in a guided movement manner. Specifically, a guide post is provided on the locking member, and a vertical sliding groove is provided on the driving base. The guide post on the locking member cooperates with the sliding groove on the driving base to enable the locking member to move up and down on the driving base, and a return compression spring is installed at the bottom of the locking member, with the other end of the return compression spring installed on the driving base. At the same time, the return compression spring also keeps the padlock structure of the locking member in the position corresponding to the top stop, facilitating padlocking and unlocking. When the padlock structure of the locking member is padlocked, the front part of the locking member can stop the locking pin, and at the same time, the front part of the locking member also has a sliding surface so that after the locking member is unlocked, when the circuit breaker trolley is advanced, the locking pin can press the locking member along the sliding surface to make the locking member descend, and the circuit breaker trolley can be advanced forward.

[0036] In this embodiment, the fixed vertical plate includes a plate body and a horizontal flange provided at the top edge of the plate body. An avoidance opening is provided on the horizontal flange for the padlock structure of the locking member 9 to pass through and extend to the upper side of the horizontal flange. After the padlock 22 is hung on the padlock structure, i.e., the hanging ear 21, the padlock 22 is stopped against the horizontal flange. In this way, the locking member cannot swing, achieving reliable stopping of the locking member. The provision of the avoidance opening on the horizontal flange not only stops the locking ear after it is padlocked, but also limits the position of the locking member, and its structure is simple, easy to process, and saves manufacturing costs. In addition, in other embodiments, a horizontal retaining ring can be installed on the upper part of the fixed vertical plate, and the locking ear can pass through the retaining ring. After the locking ear is padlocked, the locking member can be stopped against the retaining ring.

[0037] In this embodiment, the locking member 9 is as Figure 1The long strip plate shown, and the rotation assembly position of the locking member 9 and the fixed vertical plate is close to the padlock structure, so that one end of the long strip plate where the padlock structure is located is tilted upward under the action of gravity and abuts against the horizontal flanging. If the movable connection of the locking member 9 is located on the side far from the padlock structure, it is difficult to control the position of the locking ear 21 of the locking member 9 when the lock pin 23 of the circuit breaker trolley is far from the locking member 9. When the movable connection of the locking member 9 and the driving base 12 is arranged on the side of the padlock structure, the other end of the locking member 9 droops due to the action of gravity. Then, when the circuit breaker trolley is in the non-operating state, the locking ear 21 of the locking member 9 can remain in the state of passing through the avoidance opening, which is convenient for padlocking and unlocking. Of course, the gravity action may not be used to keep the padlock structure in the position abutting against the horizontal flanging. A return spring can be used to ensure the relative position of the padlock structure. At this time, the rotational assembly of the locking member and the fixed vertical plate can be arranged at the middle position of the locking member or at the end far from the padlock structure. A return tension spring is installed on the upper part of the locking member, and the other end of the return tension spring is installed on the fixed vertical plate to keep the padlock structure of the locking member in the position abutting against the horizontal flanging.

[0038] In this embodiment, the padlock structure is arranged at the rear end of the locking member 9, and the front end of the locking member 9 is used to block the circuit breaker trolley. The locking member 9 of this embodiment is arranged above the driving block 10 in the transmission mechanism. If the padlock mechanism is arranged at the front end of the locking member 9 and the rear end is used to block the circuit breaker trolley, then when the circuit breaker trolley moves backward and has not contacted the blocking part of the locking member 9, the lock pin of the circuit breaker trolley may contact the driving block 10, causing the subsequent valve part to open, resulting in a safety hazard. Therefore, in this embodiment, the padlock structure is arranged at the rear end of the locking member 9, and using the front end of the locking member 9 to block the circuit breaker trolley can ensure that the lock pin 23 will not contact the driving mechanism before the circuit breaker trolley reaches the test position, ensuring the safety of the locked state. In addition, in other embodiments, the padlock structure can also be arranged at the front end of the locking member. At this time, the position of the locking member on the fixed vertical plate needs to be moved forward so that the blocking part of the locking member is in front of the driving block in the locked state, so that the lock pin cannot contact the driving block in the locked state.

[0039] The front end of the blocking lock member 9 has a front sliding surface that slides over the locking pin 23 of the circuit breaker trolley when the circuit breaker trolley is pushed backward. If the front end of the blocking lock member 9 is square, the locking pin 23 of the circuit breaker trolley may collide with the blocking lock member 9 when it is pushed forward, and the blocking lock member 9 with a square front end is difficult to avoid the locking pin 23, making it difficult to close the circuit breaker trolley. The design of the sliding surface makes the closing path of the circuit breaker trolley smoother, making the closing process simple and efficient. The edge of the avoidance opening blocks the rear end of the blocking lock member to keep the sliding surface in a position directly opposite the locking pin 23 of the circuit breaker trolley. The blocking lock member 9 has a certain length, and the avoidance opening is only for the padlock structure of the blocking lock member 9, that is, the lock ear 21 to pass through. Therefore, when the circuit breaker trolley is in the non-working position, the end of the blocking lock member 9 away from the padlock structure will flip downward due to gravity. At this time, the avoidance opening can stop the blocking lock member 9 so that the front sliding surface is in a position directly opposite to the circuit breaker lock pin 23 to facilitate the blocking lock member 9 to avoid the circuit breaker trolley.

[0040] In this embodiment, the blocking member 9 is provided with a rear side sliding surface behind the front side sliding surface, which slides over the lock pin of the circuit breaker trolley when the circuit breaker trolley is withdrawn from the back to the front. The rear side sliding surface can make the circuit breaker trolley withdraw more smoothly. At the same time, a groove is provided at the rear of the rear side sliding surface of the blocking member to prevent the blocking member 9 from being lifted too much when the lock pin 23 passes by, thereby affecting the operation of the circuit breaker trolley.

[0041] Since the transmission mechanism does not involve the improvement of the utility model, the transmission mechanism can adopt the structure of the transmission mechanism published in the Chinese utility model patent with announcement number CN202210640U or the Chinese invention patent with publication number CN116053999A. Of course, the structure of a transmission mechanism is also provided in this embodiment, and the transmission mechanism includes a driving block 10, and a horizontal connecting rod 6 is hinged on the upper end of the driving block 10, and a driving connecting rod 7 is hinged on the other end of the connecting rod 6. The driving connecting rod 7 is fixedly connected to the rotating shaft passing through the driving base 12, and the end of the rotating shaft away from the driving connecting rod 7 transmits the movement to the upper valve 1 and the lower valve 15 through the transmission mechanism to achieve the upper valve 1 and the lower valve 15 to avoid and block the static contact. It also includes a reset spring, and the reset spring of this embodiment is a reset tension spring 8, one end of the reset tension spring 8 is connected to the connecting rod 6, and the other end is connected to the driving base 12, so as to accumulate energy when the circuit breaker trolley is in the working position. In addition, in other embodiments, a reset torsion spring may be used, and the reset torsion spring is installed at the connection between the drive block 10 and the drive base 12. When the lock pin 23 of the circuit breaker trolley pushes the drive block 10 to rotate, the reset torsion spring accumulates energy. When the lock pin 23 leaves the connecting rod 6, the reset torsion spring releases energy to reset the valve device. A reset compression spring may also be used, and one end of the compression spring is connected to the rotating end of the drive block 10, and the other end is connected to the drive base 12. When the lock pin 23 pushes the drive block 10 to rotate, the drive block 10 compresses the reset compression spring to accumulate energy. When the lock pin 23 leaves the connecting rod 6, the reset compression spring releases energy to reset the valve device. The drive base is also provided with the following Figure 3 The limit pin 25 shown is used to limit the valve plate when the valve device is reset to avoid collision between the upper valve and the lower valve.

[0042] The transmission mechanism further includes a fourth link 13 fixedly connected to the rotating shaft. The other end of the fourth link is hinged with a fifth link 14, and the fifth link 14 is hinged with the lower valve 15. A vertically arranged third link 5 is hinged in the middle area of the fourth link 13. A second link 3 with a bracket 4 arranged in the middle is hinged to the upper part of the third link 5. The other end of the second link 3 is hinged with a first link 2, and the first link 2 is hinged with the upper valve 1. When the locking pin pushes the driving plate to rotate, the driving plate drives the connecting rod to move. When the connecting rod drives the driving link 7 and the rotating shaft to rotate clockwise, the rotating shaft transmits the movement to the fourth link 13. The fourth link 13 rotates downward to drive the fifth link 14 to move downward, and the fifth link 14 drives the lower valve 15 to move downward. The third link 5 is hinged in the middle of the fourth link 13. The third link 5 moves downward, driving one side of the second link 3 to move downward. Due to the middle bracket 4, the other end of the second link 3 is lifted upward, driving the first link 2 to be lifted to lift the upper valve 1, thereby realizing the opening of the upper and lower valves. When the locking pin 23 is away from the connecting rod 6, the return spring 8 returns to its original position. At this time, the connecting rod 6 drives the driving link 7 and the rotating shaft 26 to rotate counterclockwise. The fourth link 13 rotates upward to drive the fifth link 14 to move upward, and the fifth link 14 pushes the lower valve 15 to move upward. While the fourth link 13 moves upward, it also pushes the third link 5 upward to lift one end of the second link. Due to the middle bracket 4 of the second link 3, the other end of the second link 3 moves downward, finally realizing the closing of the upper and lower valves. In this embodiment, the transmission mechanism drives the valve to move up and down to realize the shielding and avoidance of the static contact. In addition, in other embodiments, the transmission mechanism can also drive the valve to rotate to realize the shielding and avoidance of the static contact. At this time, one side of the valve can be rotationally assembled with the valve frame, and a horizontal slot is arranged on the other side of the valve. The ends of the first link and the fifth link cooperate with the slot to drive the upper valve and the lower valve to rotate upward and downward respectively to avoid the static contact when the first link and the fifth link move upward and downward respectively.

[0043] The second aspect of the present utility model provides a switch cabinet, which includes a cabinet body, a circuit breaker handcart, and a valve device. The embodiments of the valve device are the same as those of the above-mentioned valve device with a hanging lock, so they will not be elaborated here.

[0044] The above is only the preferred embodiment of the present utility model, and it is not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. All equivalent structural changes made by using the description and drawings of the present utility model should be included in the protection scope of the present utility model by the same token.

Claims

1. A flap device with a padlock, characterized in that: It includes a valve frame, a valve is provided on the front side of the static contact on the valve frame, a transmission mechanism is provided on the valve frame, the transmission mechanism has an action input component for cooperating with the circuit breaker trolley to transmit the action to the valve during the process of the circuit breaker trolley being pushed inward from the outermost side to realize the opening of the valve. The valve frame further includes a trolley guide rail for guiding the circuit breaker trolley, the action input component is arranged at the trolley guide rail, a blocking lock is movably arranged at a position near the front end of the trolley guide rail. The blocking lock has an unlocking state of avoiding the circuit breaker trolley during its movement, and also has a locking state of blocking the circuit breaker trolley from moving backward and contacting the action input component. A padlock structure is provided on the blocking lock and remains in the locking state after being padlocked on the padlock structure.

2. The valve device with a padlock according to claim 1, characterized in that: A driving base is arranged on the trolley guide rail. The driving base includes a fixed vertical plate. The blocking lock is rotatably arranged on the fixed vertical plate around a horizontal axis and switches between the unlocking state and the locking state by swinging. The padlock structure is arranged at one end of the blocking lock and is blocked by the top of the fixed vertical plate after being padlocked to keep the blocking lock in the locking state. The other end of the blocking lock blocks the circuit breaker trolley.

3. The valve device with a padlock according to claim 2, characterized in that: The fixed vertical plate includes a plate body and a horizontal flanging arranged at the top edge of the plate body. An avoidance opening is arranged on the horizontal flanging for the padlock structure of the blocking lock to pass through and extend to the upper side of the horizontal flanging. After being padlocked on the padlock structure, the padlock is blocked by the horizontal flanging.

4. The valve device with a padlock according to claim 3, characterized in that: The blocking lock is a long strip plate, and the rotation assembly position of the blocking lock and the fixed vertical plate is close to the padlock structure, so that one end of the long strip plate where the padlock structure is located is tilted upward under the action of gravity and abuts against the horizontal flanging.

5. The valve device with a padlock according to claim 4, characterized in that: The padlock structure is arranged at the rear end of the blocking lock. The front end of the blocking lock is used to block the circuit breaker trolley. The front end of the blocking lock has a front sliding surface that slides over the locking pin of the circuit breaker trolley when the circuit breaker trolley is pushed backward. The edge of the avoidance opening blocks the rear end of the blocking lock to keep the sliding surface in a position directly opposite to the locking pin of the circuit breaker trolley before and after.

6. The flap device with a padlock according to claim 5, characterized in that: The blocking lock is provided with a rear sliding surface at the rear side of the front sliding surface, which slides over the locking pin of the circuit breaker trolley when the circuit breaker trolley withdraws from back to front.

7. A switchgear cabinet, characterized in that: It includes a cabinet body, a circuit breaker trolley and a valve device. The valve device includes a valve frame, a valve is provided on the front side of the static contact on the valve frame, a transmission mechanism is provided on the valve frame, the transmission mechanism has an action input component for cooperating with the circuit breaker trolley to transmit the action to the valve during the process of the circuit breaker trolley being pushed inward from the outermost side to realize the opening of the valve. The valve frame further includes a trolley guide rail for guiding the circuit breaker trolley, the action input component is arranged at the trolley guide rail, a blocking lock is movably arranged at a position near the front end of the trolley guide rail. The blocking lock has an unlocking state of avoiding the circuit breaker trolley during its movement, and also has a locking state of blocking the circuit breaker trolley from moving backward and contacting the action input component. A padlock structure is provided on the blocking lock and remains in the locking state after being padlocked on the padlock structure.

8. The switchgear according to claim 7, characterized in that: A driving base is arranged on the trolley guide rail. The driving base includes a fixed vertical plate. The blocking and locking member is rotatably arranged on the fixed vertical plate around a horizontal axis, and the unlocking state and the locking state are switched by swinging. A padlock structure is arranged at one end of the blocking and locking member, and after the padlock is locked, it abuts against the top of the fixed vertical plate to keep the blocking and locking member in the locking state. The other end of the blocking and locking member blocks the circuit breaker trolley.

9. The switchgear according to claim 8, characterized in that: The fixed vertical plate includes a plate body and a horizontal flange arranged on the top edge of the plate body. An avoidance opening is arranged on the horizontal flange for the padlock structure of the blocking and locking member to pass through and extend to the upper side of the horizontal flange. After the padlock is locked on the padlock structure, the padlock abuts against the horizontal flange.

10. The switch cabinet according to claim 9, characterized in that: The blocking and locking member is a long strip plate, and the rotational assembly position of the blocking and locking member and the fixed vertical plate is close to the padlock structure, so that one end of the long strip plate is upturned under the action of gravity and abuts against the horizontal flange.

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