Rotation type disconnecting switch capable of being locked and locked based on operation rotating shaft

Abstract

The utility model relates to a padlock rotary disconnecting switch based on an operation rotating shaft. The padlock rotary disconnecting switch comprises a shell assembly, and an operation rotating shaft, a free tripping structure and a first driving mechanism which are arranged in the shell assembly, the circuit breaker further comprises a padlock mechanism, the padlock mechanism comprises a second driving mechanism, the second driving mechanism has a padlock state and an unlocking state, and when the second driving mechanism is in the padlock state, the second driving mechanism can interfere with rotation of the operation rotating shaft located at the closing position so that the operation rotating shaft cannot rotate to the opening position. According to the utility model, the padlock mechanism is arranged aiming at the operation rotating shaft capable of driving the free tripping structure to complete re-tripping, and the padlock mechanism is used for carrying out padlock locking on the operation rotating shaft at the closing position so that the operation rotating shaft cannot rotate to the opening position, thereby enabling the free tripping structure not to be re-tripping and further operating to switch on the switch.

Description

Technical Field

[0001] The utility model relates to a padlockable rotary isolating switch which is arranged based on an operating rotating shaft. Background Art

[0002] The applicant's prior patent CN202310606424.1 discloses a rotary isolating switch, including a knob, a free tripping structure, and a switch assembly. The knob is driven by the free tripping structure to realize the switch assembly, and a tripper is provided to cooperate with the free tripping structure, which is used to receive a fault signal or a remote control signal to realize a rapid tripping and disconnection to cut off the circuit. At the same time, by operating the knob, the free tripping structure of the tripped and disconnected switch can be re-locked and closed. If the circuit has not eliminated the dangerous situation, the on-site personnel may turn the knob without knowing it to restore the power supply to the circuit, which poses a safety hazard. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a padlockable rotary isolating switch based on an operating shaft.

[0004] The technical solution adopted by the utility model is as follows: a padlockable rotary disconnector based on an operating shaft, comprising a housing assembly and an operating shaft located in the housing assembly, a free tripping structure, and a first driving mechanism, wherein the operating shaft passes through the housing assembly for rotational drive, and the free tripping structure has a normal closing state, a normal opening state, and a tripped opening state, and the free tripping structure can be switched between the normal closing state and the normal opening state by rotating the operating shaft, and the free tripping structure in the tripped opening state can be switched to the normal opening state by rotating the operating shaft from the closing position to the opening position, and the free tripping structure in the normal closing state or the normal opening state can be switched to the tripped opening state by the first driving mechanism;

[0005] It also includes a padlock mechanism, which includes a second drive mechanism. The second drive mechanism has a padlocked state and an unlocked state. When the second drive mechanism is in the padlocked state, the second drive mechanism can interfere with the rotation of the operating shaft in the closing position so that the operating shaft cannot be rotated to the opening position.

[0006] The second driving mechanism includes an electromagnetic coil fixing part and an electromagnetic driving block on which an electromagnetic coil is fixed, a second action spring is arranged between the electromagnetic coil fixing part and the electromagnetic driving block, the electromagnetic coil fixing part is at least partially made of a magnetically conductive material, and the electromagnetic driving block is at least partially made of a permanent magnet; there is an adsorption force between the electromagnetic coil fixing part and the electromagnetic driving block, and the adsorption force is greater than the thrust of the second action spring after energy storage; when the second driving mechanism is energized, the electromagnetic coil is energized to form a repulsive force on the electromagnetic driving block away from the electromagnetic coil, and the sum of the repulsive force and the thrust of the second action spring after energy storage is greater than the adsorption force between the electromagnetic coil fixing part and the electromagnetic driving block.

[0007] A turntable is provided on the operating shaft, and a blocking member is connected to the front end of the electromagnetic driving block of the second driving mechanism. When the second driving mechanism is not in operation, the blocking member is arranged to avoid the moving trajectory of the limit block, so that the second operating shaft can rotate normally for opening and closing. When the second driving mechanism is in operation, the blocking member moves to the moving trajectory where the limit block of the second operating shaft located in the closing position rotates toward the opening position, thereby blocking the limit block of the second operating shaft located in the closing position.

[0008] The front end of the electromagnetic driving block of the second driving mechanism forms an L-shaped matching block, and the blocking member is provided with a matching plate that is inserted into the L-shaped matching block.

[0009] The housing assembly includes a transmission box composed of a lower housing member and an upper housing member. The first drive mechanism and the second drive mechanism are both arranged in the transmission box. The lower housing member is raised on one side of the turntable to form a mounting seat. A sliding platform is fixed on the mounting seat. The blocking member is arranged above the sliding platform. The electromagnetic coil fixing member of the second drive mechanism is arranged above the blocking member. The blocking member slides linearly between the electromagnetic coil fixing member of the second drive mechanism and the sliding platform.

[0010] The mounting seat is provided with a first guide protrusion arranged along the linear sliding direction of the blocking member, and the blocking member is provided with a first guide groove which is plugged and matched with the first guide protrusion; the mounting seat is provided with a second guide groove arranged along the linear sliding direction of the blocking member, and the blocking member is provided with a second guide protrusion which is plugged and matched with the second guide groove; the sliding platform is provided with a first through hole and a second through hole for the first guide protrusion and the second guide protrusion to pass through respectively.

[0011] The first guide protrusions are provided with two and are arranged at a certain distance from each other. The sliding platform is correspondingly provided with two first through-holes and a round hole is provided between the two first through-holes. The sliding platform is threadedly connected and fastened to the mounting seat through a threaded fastener passing through the round hole.

[0012] A limiting frame cooperating with the second driving mechanism is provided at the lower end of the upper shell member.

[0013] A push rod is arranged on the outer side of the blocking member, and the push rod can be pressed to reset the electromagnetic driving block so as to be adsorbed to the electromagnetic coil fixing member again.

[0014] The beneficial effects of the utility model are as follows: the utility model provides a padlock mechanism for the operating shaft that can drive the free tripping structure to complete the re-engagement, and the padlock mechanism is used to padlock the operating shaft in the closing position so that it cannot be rotated to the opening position, thereby making the free tripping structure unable to re-engage and then operate to close the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0016] Figure 1 This is an exploded schematic diagram of an embodiment of the utility model;

[0017] Figure 2 This is a partial structural diagram of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the partial structure explosion of an embodiment of the utility model;

[0019] Figure 4 This is a schematic structural diagram of a lower housing member according to an embodiment of the utility model;

[0020] Figure 5 This is a structural schematic diagram of a sliding platform according to an embodiment of the utility model;

[0021] Figure 6 This is a schematic structural diagram of a blocking member according to an embodiment of the utility model;

[0022] Figure 7 This is a schematic structural diagram of an upper housing member of an embodiment of the utility model;

[0023] In the figure, the housing assembly 100; the driving through hole 110; the lower housing member 120, the mounting seat 121; the first guide protrusion 122; the second guide groove 123; the upper housing member 130; the limit frame 131;

[0024] Operating shaft-200; reset transmission block-210; rack-220; turntable-230; limit block-231;

[0025] Free tripping structure-300;

[0026] First driving mechanism-400;

[0027] Connecting rod - 500;

[0028] Sliding platform-600; first through hole-610; second through hole-620; round hole-630;

[0029] Second driving mechanism-700; L-shaped matching block-710; pushing rod-750;

[0030] Knob - 800;

[0031] Blocking member-900; matching plate-910; first guide groove-920; second guide protrusion-930. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0033] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0034] The directions and positions mentioned in the present invention, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only directions or positions with reference to the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0035] A rotary isolating switch, such as Figure 1-Figure 7 As shown, it includes a housing assembly 100 and a free tripping structure 300 , a first driving mechanism 400 , and a second driving mechanism 700 disposed in the housing assembly 100 .

[0036] The free tripping structure includes a four-bar operating mechanism, an energy storage spring, a lock buckle and a trip buckle. When the lock buckle and the trip buckle are locked, the energy storage spring stores energy, and the switch unit is driven to open and close through the action of the four-bar operating mechanism. When the lock buckle and the trip buckle are tripped, the trip buckle and the four-bar operating mechanism form a five-bar mechanism, the energy storage spring releases energy, and the five-bar mechanism quickly acts to complete the tripping and opening. The specific structure is the same as the structure disclosed in the applicant's prior patent CN202310606424.1, and will not be elaborated on in detail.

[0037] A first transmission assembly is provided between the free tripping structure and the knob 800, specifically, as Figure 3As shown, it includes an operating shaft 200 and a rack 220. The operating shaft 200 is circumferentially linked with the knob 800 and is provided with a turntable 230. The outer periphery of the turntable 230 forms a gear structure meshing with the rack 220. The rack 220 cooperates with the four-bar operating mechanism, so that the knob 800, the operating shaft 200, and the rack 220 are driven in sequence to drive the four-bar operating mechanism to perform opening and closing actions.

[0038] The first drive mechanism 400 cooperates with the lock buckle to drive the lock buckle to rotate to realize tripping and opening. The first drive mechanism 400 is an electromagnetic drive mechanism, and is provided with a first port for receiving a control signal. The control signal can cause the first drive mechanism 400 to drive the lock buckle to move.

[0039] Specifically, the first driving mechanism 400 includes an electromagnetic coil fixing part and an electromagnetic driving block to which an electromagnetic coil is fixed, a first action spring is provided between the electromagnetic coil fixing part and the electromagnetic driving block, the electromagnetic coil fixing part is at least partially made of a magnetically conductive material, and the electromagnetic driving block is at least partially made of a permanent magnet; there is an adsorption force between the electromagnetic coil fixing part and the electromagnetic driving block, and the adsorption force is greater than the thrust of the first action spring after energy storage; when the first driving mechanism 400 is energized, the electromagnetic coil is energized to form a repulsive force on the electromagnetic driving block away from the electromagnetic coil, and the sum of the repulsive force and the thrust of the first action spring after energy storage is greater than the adsorption force between the electromagnetic coil fixing part and the electromagnetic driving block. A connecting rod 500 is provided between the electromagnetic driving block and the lock of the first driving mechanism 400, such as Figure 5 As shown, the connecting rod 500 is provided with a first hinged portion for being hingedly connected to the housing assembly 100, a first pushing portion arranged corresponding to the first driving mechanism 400, and a driving portion arranged corresponding to the lock. When the electromagnetic coil of the first driving mechanism 400 is energized, the electromagnetic driving block is actuated to drive the lock and the jump buckle to disengage through the connecting rod 500.

[0040] When the lock catch and the trip catch are released, the knob 800 is in the closing position. When the knob 800 is turned to the opening position, the free tripping structure can complete the lock catch and the trip catch again, and the energy storage spring completes energy storage. At the same time, the operating shaft 200 is provided with a reset transmission block 210 that cooperates with the first drive mechanism 400. By rotating the operating shaft 200, the reset transmission block 210 can drive the drive rod of the first drive mechanism 400 to complete the magnetic adsorption reset.

[0041] After a fault occurs, a control signal is sent to the first drive mechanism 400 to release the lock and trip button, release the energy storage spring, and quickly disconnect the switch. After the fault is removed, the lock and trip button can be locked again, the energy storage spring can be charged, and the first drive mechanism 400 can be reset by rotating the operating shaft 200.

[0042] On the basis of the above structure, this embodiment adds a padlock mechanism in the housing assembly 100, through which the switch cannot be locked or closed, avoiding misoperation. When the fault is not eliminated, the switch is closed and energized. Specifically, the padlock mechanism includes a second drive mechanism 700, which is provided with a second port for receiving a control signal. The second drive mechanism 700 cooperates with the first transmission assembly. When the second drive mechanism 700 receives the padlock control signal, it acts to make the first transmission assembly unable to act, avoiding misoperation after a major fault occurs.

[0043] Specifically, Figure 2 , Figure 3 As shown, a limit block 231 is disposed at the upper end of the rotating disk 230 of the operating rotating shaft 200 , and the position of the second driving mechanism 700 is arranged corresponding to the limit block 231 of the operating rotating shaft 200 .

[0044] Specifically, the second driving mechanism 700 includes an electromagnetic coil fixing part and an electromagnetic driving block to which an electromagnetic coil is fixed, and a second action spring is provided between the electromagnetic coil fixing part and the electromagnetic driving block. In this embodiment, the electromagnetic coil fixing part is a shell made of a magnetically conductive material such as low carbon steel, electrical pure iron, etc., the electromagnetic coil is fixed in the shell, and the electromagnetic driving block is at least partially made of a permanent magnet; there is an adsorption force between the shell made of magnetically conductive material and the electromagnetic driving block, and the adsorption force is greater than the thrust of the second action spring after energy storage, ensuring that the shell made of magnetically conductive material and the electromagnetic driving block maintain an adsorption relationship in the initial state; when the second driving mechanism 700 receives a padlock control signal, the electromagnetic coil is energized to form a magnetic field and the direction of the magnetic field forms a repulsive force on the electromagnetic driving block away from the electromagnetic coil, and the sum of the repulsive force and the thrust of the second action spring after energy storage is greater than the adsorption force between the shell made of magnetically conductive material and the electromagnetic driving block, so that the electromagnetic driving block can be pushed to move.

[0045] The electromagnetic coil fixing part is limited in the housing assembly 100, the front end of the electromagnetic drive block is linked with a blocking part 770, and the front end of the electromagnetic drive block of the second drive mechanism 700 is connected with a blocking part 900. When the second drive mechanism 700 is not in motion, the blocking part 900 avoids the movement track of the limit block 231, so that the second operating shaft 310 can normally open and close the switch and rotate. When the second drive mechanism 700 is in motion, the blocking part 900 moves to the movement track of the limit block 231 of the second operating shaft 310 located at the closing position rotating toward the opening position, forming a block for the limit block 231 of the second operating shaft 310 located at the closing position. The operating shaft 200 located at the closing position cannot be rotated to the opening position, so that the lock buckle and the trip buckle cannot be buckled again to close the switch.

[0046] Furthermore, in this embodiment, a manual reset mechanism is provided for the second driving mechanism 700, specifically, Figure 2 , Figure 3 As shown, a push rod 750 is provided on the outside of the blocking member 900, and a driving through hole 110 is provided on the housing assembly 100 corresponding to the push rod 750. The push rod 750 can be pressed through the driving through hole 110 to reset the electromagnetic driving block and re-adsorb it onto the electromagnetic coil fixing member.

[0047] Furthermore, the front end of the electromagnetic driving block of the second driving mechanism 700 forms an L-shaped matching block 710 , and the blocking member 900 is provided with a matching plate 910 that is inserted into the L-shaped matching block 710 .

[0048] Furthermore, the shell assembly 100 includes a transmission box composed of a lower shell member 120 and an upper shell member 130, the first drive mechanism 400 and the second drive mechanism 700 are both arranged in the transmission box, the lower shell member 120 protrudes on one side of the turntable 230 to form a mounting seat 121, a sliding platform 600 is fixed on the mounting seat 121, the blocking member 900 is arranged above the sliding platform 600, the electromagnetic coil fixing member of the second drive mechanism 700 is arranged above the blocking member 900, and the blocking member 900 slides linearly between the electromagnetic coil fixing member of the second drive mechanism 700 and the sliding platform 600.

[0049] Furthermore, the mounting seat 121 is provided with a first guide protrusion 122 arranged along the linear sliding direction of the blocking member 900, and the blocking member 900 is provided with a first guide groove 920 plugged with the first guide protrusion 122; the mounting seat 121 is provided with a second guide groove 123 arranged along the linear sliding direction of the blocking member 900, and the blocking member 900 is provided with a second guide protrusion 930 plugged with the second guide groove 123; the sliding platform 600 is provided with a first through hole 610 and a second through hole 620 for the first guide protrusion 122 and the second guide protrusion 930 to pass through respectively. Such a setting can form a good linear sliding limit effect on the blocking member 900 to avoid malfunction. The second through hole 620 forms a limit for the two end points of the sliding path of the blocking member 900.

[0050] Further, the first guide protrusions 122 are provided with two and are arranged at a certain distance, the sliding platform 600 is correspondingly provided with two first through-holes 610 and a round hole 630 is provided between the two first through-holes 610, and the sliding platform 600 is threadedly connected and fastened to the mounting seat 121 through a threaded fastener passing through the round hole 630. The sliding platform 600 can be well fixed by only one threaded fastener, and the threaded fastener can be a self-tapping screw, so there is no need to pre-open a screw hole in the mounting seat 121.

[0051] Furthermore, a limit frame 131 is provided at the lower end of the upper housing member 130 to cooperate with the second driving mechanism 700 , so as to facilitate the limit installation of the second driving mechanism 700 .

[0052] In this embodiment, only the action of the first drive mechanism 400 can realize the energy release of the energy storage mechanism, thereby realizing opening and power off, and the closing of the switch and the energy storage mechanism energy storage reset can be realized by turning the knob to close the switch. The action of the second drive mechanism 700 cannot realize the energy storage and release, and thus opening and power off. The first drive mechanism 400 and the second drive mechanism 700 must act synchronously or the first drive mechanism 400 and the second drive mechanism 700 must act successively to open the switch and power off, and to padlock the switch. The closing of the switch and the energy storage mechanism energy storage reset cannot be realized by turning the knob to close the switch. The second drive mechanism 700 must be manually pushed to reset by the push rod 750 before the closing of the switch and the energy storage mechanism energy storage reset can be realized by turning the knob to close the switch. When this embodiment is used, the first drive mechanism 400 can be selected to actuate, or the first drive mechanism 400 and the second drive mechanism 700 can be actuated synchronously, or the first drive mechanism 400 can be actuated and the second drive mechanism 700 can be actuated by a remote signal according to the severity of the fault. The first drive mechanism 400 and the second drive mechanism 700 can be actuated automatically by different fault signals, or the first drive mechanism 400 and the second drive mechanism 700 can be actuated by manually sending control signals remotely based on the fault situation.

[0053] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A padlockable rotary disconnector based on an operating shaft, comprising a housing assembly and an operating shaft located in the housing assembly, a free tripping structure, and a first driving mechanism, wherein the operating shaft passes through the housing assembly for rotational drive, the free tripping structure has a normal closing state, a normal opening state, and a tripped opening state, the free tripping structure can be switched between the normal closing state and the normal opening state by rotating the operating shaft, and the free tripping structure in the tripped opening state can be switched to the normal opening state by rotating the operating shaft from the closing position to the opening position, and the free tripping structure in the normal closing state or the normal opening state can be switched to the tripped opening state by the first driving mechanism; Features: It also includes a padlock mechanism, which includes a second drive mechanism. The second drive mechanism has a padlocked state and an unlocked state. When the second drive mechanism is in the padlocked state, the second drive mechanism can interfere with the rotation of the operating shaft in the closing position so that the operating shaft cannot be rotated to the opening position.

2. The padlockable rotary isolating switch based on the operating shaft according to claim 1 is characterized in that: The second driving mechanism includes an electromagnetic coil fixing part and an electromagnetic driving block on which an electromagnetic coil is fixed, a second action spring is arranged between the electromagnetic coil fixing part and the electromagnetic driving block, the electromagnetic coil fixing part is at least partially made of a magnetically conductive material, and the electromagnetic driving block is at least partially made of a permanent magnet; there is an adsorption force between the electromagnetic coil fixing part and the electromagnetic driving block, and the adsorption force is greater than the thrust of the second action spring after energy storage; when the second driving mechanism is energized, the electromagnetic coil is energized to form a repulsive force on the electromagnetic driving block away from the electromagnetic coil, and the sum of the repulsive force and the thrust of the second action spring after energy storage is greater than the adsorption force between the electromagnetic coil fixing part and the electromagnetic driving block.

3. The padlockable rotary isolating switch based on the operating shaft according to claim 2 is characterized in that: A turntable is provided on the operating shaft, and a limit block is provided on the turntable. A blocking member is connected to the front end of the electromagnetic driving block of the second driving mechanism. When the second driving mechanism is not in operation, the blocking member is arranged to avoid the moving trajectory of the limit block, so that the second operating shaft can rotate normally to open and close the switch. When the second driving mechanism is in operation, the blocking member moves to the moving trajectory where the limit block of the second operating shaft located in the closing position rotates toward the opening position, thereby blocking the limit block of the second operating shaft located in the closing position.

4. The padlockable rotary isolating switch based on the operating shaft according to claim 3 is characterized in that: The front end of the electromagnetic driving block of the second driving mechanism forms an L-shaped matching block, and the blocking member is provided with a matching plate that is inserted into the L-shaped matching block.

5. The padlockable rotary isolating switch based on the operating shaft according to claim 3 is characterized in that: The housing assembly includes a transmission box composed of a lower housing member and an upper housing member. The first drive mechanism and the second drive mechanism are both arranged in the transmission box. The lower housing member is raised on one side of the turntable to form a mounting seat. A sliding platform is fixed on the mounting seat. The blocking member is arranged above the sliding platform. The electromagnetic coil fixing member of the second drive mechanism is arranged above the blocking member. The blocking member slides linearly between the electromagnetic coil fixing member of the second drive mechanism and the sliding platform.

6. The padlockable rotary isolating switch based on the operating shaft according to claim 5, characterized in that: The mounting seat is provided with a first guide protrusion arranged along the linear sliding direction of the blocking member, and the blocking member is provided with a first guide groove which is plugged and matched with the first guide protrusion; the mounting seat is provided with a second guide groove arranged along the linear sliding direction of the blocking member, and the blocking member is provided with a second guide protrusion which is plugged and matched with the second guide groove; the sliding platform is provided with a first through hole and a second through hole for the first guide protrusion and the second guide protrusion to pass through respectively.

7. The padlockable rotary isolating switch based on the operating shaft according to claim 6, characterized in that: The first guide protrusions are provided with two and are arranged at a certain distance from each other. The sliding platform is correspondingly provided with two first through-holes and a round hole is provided between the two first through-holes. The sliding platform is threadedly connected and fastened to the mounting seat through a threaded fastener passing through the round hole.

8. The padlockable rotary isolating switch based on the operating shaft according to any one of claims 5 to 7, characterized in that: A limiting frame cooperating with the second driving mechanism is provided at the lower end of the upper shell member.

9. The padlockable rotary isolating switch based on the operating shaft according to any one of claims 3 to 7, characterized in that: A push rod is arranged on the outer side of the blocking member, and the push rod can be pressed to reset the electromagnetic driving block so as to be adsorbed to the electromagnetic coil fixing member again.

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