Switch operating device and switch cabinet

Abstract

The present invention relates to the technical field of electric switch devices, and in particular to switch operating devices and switch cabinets. The switch operating device comprises an operating mechanism and an operating handle, the frame of the operating mechanism is installed with an operating shaft, the panel of the frame is provided with an operating hole for the operating handle to pass through to connect the operating shaft for opening and closing operations, the operating handle has a closing position and an opening position corresponding to the closing state and the opening state of the operating mechanism, respectively, the hole wall of the operating hole is provided with a closing position limit groove and an opening position limit groove, the operating handle is provided with a plug-in limit column, the closing position limit groove and the opening position limit groove are respectively provided for the plug-in limit column to pass through when the operating mechanism is in the closing state and the opening state, so that the operating handle is inserted into or pulled out of the operating hole, and the panel blocks the operating handle when it is staggered with the plug-in limit column. The operating personnel can only pull out the operating handle after the operation is in place, and the reliability of the switch operation is not easily affected by human factors.

Description

Technical Field

[0001] The present invention relates to the technical field of electric switch devices, and in particular to a switch operating device and a switch cabinet. Background Art

[0002] The types of high-voltage switches in power switch cabinets include isolating switches, earthing switches, circuit breakers, three-position switches, etc. These switches are usually equipped with switch operating devices that can perform manual opening and closing operations. The switch operating device includes an operating mechanism and an operating handle of the supporting operating mechanism. The operating mechanism is connected to the switch body in a transmission manner. An operating shaft for cooperating with the operating handle is installed on the frame of the operating mechanism. An operating hole corresponding to the operating shaft is provided on the frame panel of the operating mechanism. The operating shaft is provided with a structure for cooperating with the operating handle. When in use, the operator holds the operating handle and inserts it into the operating hole and connects it to the operating shaft in alignment with the operating shaft. The operating handle drives the operating shaft to rotate, inputs torque to the operating mechanism to drive the operating mechanism to perform opening and closing actions, and then drives the moving contact and static contact of the switch to realize opening and closing. The operating mechanism has an opening state and a closing state corresponding to the opening position and closing position of the switch, respectively.

[0003] In order to keep the switch in the open position or the closed position after the switch is opened and closed by the operating mechanism, the operating mechanism also includes a locking mechanism that can keep the operating mechanism in the open state and the closed state. When manual operation is required, the locking mechanism is unlocked. After the operation is in place, the transmission shaft used to drive the switch moving contact is locked by the locking mechanism to prevent the rotation of the transmission shaft, thereby maintaining the position of the switch moving contact. In order to facilitate the operator to judge whether the operation is in place, the operating mechanism is usually provided with an indicator plate that can rotate with the operating shaft, and the indicator plate is provided with an identification line. The cabinet of the switch cabinet is provided with an identification line that matches the identification line on the indicator plate. The identification line on the indicator plate can be exposed from the corresponding indication hole on the cabinet of the switch cabinet. When the indicator plate rotates to the corresponding position with the operating shaft, the relative position relationship between the corresponding identification line on the indicator plate and the corresponding identification line at the indication hole on the cabinet of the switch cabinet is used to judge whether the operation is in place.

[0004] However, if the operator only relies on observing the indicator signs to assist the operator in judging whether the operation is in place, it requires a high level of subjective judgment from the operator and is easily affected by misjudgment or the indicator signs not being completely corresponding, resulting in inadequate operation, which is not conducive to reliability of use. Summary of the invention

[0005] The object of the present invention is to provide a switch operating device to solve the problem that the current switch operating device is easily affected by human factors and may not be properly operated; the object of the present invention is also to provide a switch cabinet to solve the above problem.

[0006] The technical solution of the switch operating device of the present invention is: The switch operating device comprises an operating mechanism and an operating handle. The frame of the operating mechanism is installed with an operating shaft. The panel of the frame is provided with an operating hole for the operating handle to pass through so as to connect the operating shaft to perform opening and closing operations. The operating handle has a closing position and an opening position corresponding to the closing state and the opening state of the operating mechanism respectively. The frame is provided with a limiting structure for limiting the rotation of the operating handle when it is rotated to the closing position and the opening position. The hole wall of the operating hole is provided with a closing limiting groove and an opening limiting groove. The operating handle is provided with an insertion and extraction limiting column. The closing limiting groove and the opening limiting groove are respectively provided for the insertion and extraction limiting column to pass through when the operating mechanism is in the closing state and the opening state so that the operating handle can be inserted into or extracted from the operating hole, and the panel blocks the operating handle when it is offset from the insertion and extraction limiting column.

[0007] Beneficial effect: The present invention is improved on the basis of the switch operating device in the prior art. A limiting structure for limiting the rotational stroke of the operating handle when driving the operating shaft is provided on the frame of the operating mechanism, and a plug-in limiting column is provided on the operating handle, and a corresponding limiting groove is provided on the hole wall of the operating hole of the frame panel. When the operating mechanism is in the closed state and changes to the open state, the plug-in limiting column of the operating handle follows the closed limit groove at the operating hole to insert the operating handle into the operating hole to connect the operating shaft, and the plug-in limiting column passes through the closed limit groove, and the closed limit groove does not block the operating handle. The operating handle can be rotated to drive the operating shaft to perform opening and closing operations. When the operating mechanism changes to the open state, the operating handle rotates to the open position and is restricted by the corresponding limiting structure and cannot continue to rotate. At this time, the plug-in limiting column on the operating handle corresponds to the open limit groove at the operating hole, and the plug-in limiting column can follow the open limit groove to pull the operating handle out When the operating mechanism is in the open state and changes to the closed state, the plug-in limit column of the operating handle follows the open limit groove at the operating hole to insert the operating handle into the operating hole to connect the operating shaft. When the operating mechanism changes to the closed state, the operating handle rotates to the closed position and is restricted by the corresponding limit structure and cannot continue to rotate. At this time, the plug-in limit column on the operating handle corresponds to the closed limit groove at the operating hole, and the plug-in limit column can follow the closed limit groove to pull the operating handle out of the operating hole. If the operating mechanism is not operated in place, the plug-in limit column on the operating handle will be staggered with the open limit groove or the closed limit groove. At this time, the plug-in limit column will be blocked by the outer part of the operating hole of the panel, thereby blocking the operating handle from being pulled out of the operating hole through the panel. This can play an anti-foolproof function. The operating handle can be pulled out only after the operator has operated in place, which can ensure that the operation is in place and the reliability of the switch operation is not easily affected by human factors.

[0008] Furthermore, the limiting structure includes a hole wall limiting protrusion arranged on the hole wall of the operating hole, the hole wall limiting protrusion and the combined limiting groove and the divided limiting groove are spaced apart in the circumferential direction of the operating hole, and a handle limiting portion is provided on the operating handle, and the hole wall limiting protrusion is used to cooperate with the handle limiting portion on the operating handle to limit the rotational stroke of the operating handle when the operating shaft is rotated.

[0009] Furthermore, the limit protrusion on the hole wall is used to cooperate with the handle limit part on the operating handle when the operating mechanism changes from the closed state to the open state, and the limit structure also includes a closing limit column arranged on the frame, and the operating mechanism includes a limit arm that is transmission-connected to the operating shaft, and the limit arm is used to cooperate with the closing limit column when the operating mechanism changes from the open state to the closed state.

[0010] Furthermore, the operating handle includes a sleeve portion used to be sleeved on the operating shaft to drive the operating shaft to rotate, and the handle limiting portion is an arc-shaped piece protruding axially based on the sleeve portion, and the arc-shaped piece has an inner arc surface facing the side where the axis of the sleeve portion is located and an outer arc surface facing away from the inner arc surface, and the insertion and extraction limiting column is arranged on the arc-shaped piece and protrudes from the outer arc surface.

[0011] Furthermore, the arc-shaped piece has two end surfaces in the extending direction of the arc line thereof, and the distance between one end surface and the plugging and pulling limiting column is smaller than the distance between the other end surface and the plugging and pulling limiting column.

[0012] Furthermore, one end of the operating shaft for connecting to the operating handle extends out of the panel.

[0013] Furthermore, the panel includes a main board body and a limiting sleeve installed on the main board body, and a center hole of the limiting sleeve constitutes the operating hole.

[0014] Furthermore, the limiting sleeve includes a sleeve body and a flange located at one end of the sleeve body, the main board body is provided with a mounting hole for the sleeve body to fit through, and the flange is fixed on the outer side of the main board body.

[0015] Furthermore, a stop-rotation fitting section is provided at one end of the operating shaft for connecting to the operating handle, the stop-rotation fitting section has an arc surface and a plane surface arranged opposite to each other, and the operating handle is provided with a stop-rotation fitting hole adapted to the stop-rotation fitting section to form a stop-rotation connection between the operating handle and the operating shaft.

[0016] The technical solution of the switch cabinet of the present invention is: The switch cabinet comprises a switch operating device, which comprises an operating mechanism and an operating handle. The frame of the operating mechanism is installed with an operating shaft. The panel of the frame is provided with an operating hole for the operating handle to pass through so as to connect the operating shaft to perform opening and closing operations. The operating handle has a closing position and an opening position corresponding to the closing state and the opening state of the operating mechanism respectively. The frame is provided with a limiting structure for limiting the rotation of the operating handle when it is rotated to the closing position and the opening position. The hole wall of the operating hole is provided with a closing limiting groove and an opening limiting groove. The operating handle is provided with an insertion and extraction limiting column. The closing limiting groove and the opening limiting groove are respectively provided for the insertion and extraction limiting column to pass through when the operating mechanism is in the closing state and the opening state so that the operating handle can be inserted into or extracted from the operating hole, and the panel blocks the operating handle when it is offset from the insertion and extraction limiting column.

[0017] Beneficial effect: The present invention is improved on the basis of the switch operating device of the switch cabinet in the prior art. A limit structure for limiting the rotational stroke of the operating handle when driving the operating shaft is provided on the frame of the operating mechanism, and a plug-in limit column is provided on the operating handle, and a corresponding limit groove is provided on the hole wall of the operating hole of the frame panel. When the operating mechanism is in the closed state and changes to the open state, the plug-in limit column of the operating handle follows the closed limit groove at the operating hole to insert the operating handle into the operating hole to connect the operating shaft, and the plug-in limit column passes through the closed limit groove, and the closed limit groove does not block the operating handle. The operating handle can be rotated to drive the operating shaft to perform opening and closing operations. When the operating mechanism changes to the open state, the operating handle rotates to the open position and is restricted by the corresponding limit structure and cannot continue to rotate. At this time, the plug-in limit column on the operating handle corresponds to the open position limit groove at the operating hole, and the plug-in limit column can follow the open position limit groove to allow the operating handle to When the switch is in the closed position, the plug-in limit column on the operating handle follows the open position limit groove at the operating hole to insert the operating handle into the operating hole to connect the operating shaft. When the operating mechanism is changed to the closed position, the operating handle rotates to the closed position and is restricted by the corresponding limit structure and cannot continue to rotate. At this time, the plug-in limit column on the operating handle corresponds to the closed position limit groove at the operating hole, and the plug-in limit column can follow the closed position limit groove to pull the operating handle out of the operating hole. If the operating mechanism is not operated in place, the plug-in limit column on the operating handle will be staggered with the open position limit groove or the closed position limit groove. At this time, the plug-in limit column will be blocked by the outer part of the operating hole of the panel, thereby blocking the operating handle from being pulled out of the operating hole through the panel. This can play an anti-foolproof function. The operating handle can be pulled out only after the operator has operated in place, which can ensure that the operation is in place and the reliability of the switch operation is not easily affected by human factors.

[0018] Furthermore, the limiting structure includes a hole wall limiting protrusion arranged on the hole wall of the operating hole, the hole wall limiting protrusion and the combined limiting groove and the divided limiting groove are spaced apart in the circumferential direction of the operating hole, and a handle limiting portion is provided on the operating handle, and the hole wall limiting protrusion is used to cooperate with the handle limiting portion on the operating handle to limit the rotational stroke of the operating handle when the operating shaft is rotated.

[0019] Furthermore, the limit protrusion on the hole wall is used to cooperate with the handle limit part on the operating handle when the operating mechanism changes from the closed state to the open state, and the limit structure also includes a closing limit column arranged on the frame, and the operating mechanism includes a limit arm that is transmission-connected to the operating shaft, and the limit arm is used to cooperate with the closing limit column when the operating mechanism changes from the open state to the closed state.

[0020] Furthermore, the operating handle includes a sleeve portion used to be sleeved on the operating shaft to drive the operating shaft to rotate, and the handle limiting portion is an arc-shaped piece protruding axially based on the sleeve portion, and the arc-shaped piece has an inner arc surface facing the side where the axis of the sleeve portion is located and an outer arc surface facing away from the inner arc surface, and the insertion and extraction limiting column is arranged on the arc-shaped piece and protrudes from the outer arc surface.

[0021] Furthermore, the arc-shaped piece has two end surfaces in the extending direction of the arc line thereof, and the distance between one end surface and the plugging and pulling limiting column is smaller than the distance between the other end surface and the plugging and pulling limiting column.

[0022] Furthermore, one end of the operating shaft for connecting to the operating handle extends out of the panel.

[0023] Furthermore, the panel includes a main board body and a limiting sleeve installed on the main board body, and a center hole of the limiting sleeve constitutes the operating hole.

[0024] Furthermore, the limiting sleeve includes a sleeve body and a flange located at one end of the sleeve body, the main board body is provided with a mounting hole for the sleeve body to fit through, and the flange is fixed on the outer side of the main board body.

[0025] Furthermore, a stop-rotation fitting section is provided at one end of the operating shaft for connecting to the operating handle, the stop-rotation fitting section has an arc surface and a plane surface arranged opposite to each other, and the operating handle is provided with a stop-rotation fitting hole adapted to the stop-rotation fitting section to form a stop-rotation connection between the operating handle and the operating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a three-position switch operating mechanism of a switch operating device according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the three-position switch operating mechanism without the interlocking baffle; Figure 3 for Figure 1 A schematic diagram of the installation structure of the locking rod on the middle plate; Figure 4 for Figure 1 A schematic diagram of the matching structure of the locking plate and the locking rod; Figure 5 for Figure 1 A front schematic diagram of the front plate in FIG. Figure 6 for Figure 1 Schematic diagram of the back side of the front plate in FIG. Figure 7 for Figure 1 A schematic diagram of the structure of the operating handle of the three-position switch operating mechanism; Figure 8 for Figure 6 Schematic diagram of the ground limit sleeve in FIG. Fig. 9 for Figure 8 Schematic diagram of the operating handle in use; Fig.10 for Figure 1 Schematic diagram of the three-position switch operating mechanism in the grounded closed state; Fig.11 for Fig.10 Schematic diagram of the cooperation between the limit arm and the ground limit column; Fig.12 for Figure 1 A three-dimensional schematic diagram of the three-position switch operating mechanism in the open state; Fig.13 for Fig.12 Schematic diagram of the relative positions of the limit arm, the ground limit column and the isolation limit column; Fig.14 for Figure 1 Schematic diagram of the three-position switch operating mechanism in the isolating and closing state; Fig.15 for Fig.14 Schematic diagram of the cooperation between the limit arm and the isolation limit column; Fig.16 for Figure 1 A front view of the three-position switch operating mechanism in the open state; Fig.17 for Fig.16 Schematic diagram of the cooperation between the locking plate and the locking rod; Fig.18 for Figure 1 A schematic diagram of the three-position switch operating mechanism in the process from the open state to the isolated closed state; Fig.19 for Fig.18 Schematic diagram of the cooperation between the locking plate and the locking rod; Fig. 20 for Figure 1 A schematic diagram of the three-position switch operating mechanism in the process from the open state to the grounded closed state; Fig.21 for Fig. 20 Schematic diagram of the locking plate and locking rod in the figure.

[0027] In the figure: 100, rack; 101, front plate; 102, middle plate; 103, rear plate; 11, isolation limit sleeve; 12, grounding limit sleeve; 111, isolation operation hole; 112, isolation plug-in limit slot; 113, isolation plug-in limit slot; 114, isolation hole wall limit convex part; 121, grounding operation hole; 122, grounding plug-in limit slot; 123, grounding plug-in limit slot; 124, grounding hole wall limit convex part; 13, grounding limit column; 14, isolation limit column; 200, isolation operation shaft; 201, limit arm; 300, grounding operating shaft; 400, locking plate; 41, opening locking groove; 42, isolation closing locking groove; 43, grounding closing locking groove; 500, locking rod; 51, locking rod return spring; 52, locking rod mounting seat; 600, interlocking baffle; 61, auxiliary shaft; 700, operating handle; 71, anti-rotation matching hole; 72, handle limiting part; 73, plug-in limiting column; 800, interlocking baffle; 801, transmission connecting rod. DETAILED DESCRIPTION

[0028] The switch operating device of the present invention utilizes a limit structure for limiting the rotational travel of the operating handle in conjunction with a structure for limiting the insertion and extraction position of the operating handle, so that the operating handle cannot be pulled out when the operating mechanism is not operated in place, but can be pulled out smoothly when the operation is in place, thereby playing an anti-mistake function.

[0029] Embodiments of the switch operating device of the present invention: The switch operating device is used to open and close the switch. The switch operating device includes an operating mechanism and an operating handle matched with the operating mechanism. The operating mechanism includes a frame, an operating shaft is installed on the frame, and an operating hole corresponding to the operating shaft is provided on the panel of the frame. The operating handle can pass through the operating hole to be connected to the operating shaft. The operating handle drives the operating shaft to rotate to realize the opening and closing operation of the operating mechanism, and the operating mechanism drives the switch to open and close. The switch has an opening position and a closing position. The operating mechanism has an opening state corresponding to the opening position of the switch and a closing state corresponding to the closing position of the switch. The operating handle has a closing position corresponding to the closing state of the operating mechanism and an opening position corresponding to the opening state of the operating mechanism in the rotation stroke during operation. The frame is provided with a limit structure for limiting the rotation of the operating handle when it is rotated to the closing position and the opening position, that is, the closing position and the opening position of the operating handle are two limit positions of its rotation stroke, and the two limit positions are used to realize the switching action from the opening state to the corresponding closing state. A closing limit groove and an opening limit groove are provided on the hole wall of the operating hole, and the operating handle is provided with a plug-in limit column. When the operating mechanism is in a closing state, the closing limit groove allows the plug-in limit column to pass through accordingly so that the operating handle can be inserted into or pulled out of the operating hole. When the operating mechanism is in an opening state, the opening limit groove allows the plug-in limit column to pass through accordingly so that the operating handle can be inserted into or pulled out of the operating hole. When the closing limit groove, the opening limit groove and the plug-in limit column are staggered, the panel can block the operating handle from being pulled out of the operating hole. Of course, the operating handle cannot be inserted into the operating hole at this time.

[0030] When the operating mechanism is in the closed state and changes to the open state, the plug-in limit column of the operating handle follows the closed limit groove at the operating hole to insert the operating handle into the operating hole to connect the operating shaft, and the plug-in limit column passes through the closed limit groove and enters the inner side of the panel. The closed limit groove no longer blocks the operating handle, and the operating handle can be rotated to drive the operating shaft to perform opening and closing operations. When the operating mechanism is changed to the open state, the operating handle rotates to the open position and is restricted by the corresponding limit structure and cannot continue to rotate. At this time, the plug-in limit column on the operating handle corresponds to the open position limit groove at the operating hole, and the plug-in limit column can follow the open position limit groove to pull the operating handle out of the operating hole. Similarly, when the operating mechanism is in the open state and changes to the closed state, the plug-in limit column of the operating handle follows the open position limit groove at the operating hole. The plug-in limit column can be used to pull the operating handle out of the operating hole along the closing limit groove. If the operating mechanism is not operated in place, the plug-in limit column on the operating handle will be staggered with the open limit groove and the closed limit groove. At this time, the plug-in limit column will be blocked by the part of the panel located outside the operating hole, thereby blocking the operating handle from being pulled out of the operating hole through the panel. This can play an anti-foolproof function. The operating handle can be pulled out only after the operator has operated in place, which can ensure that the operation is in place and the reliability of the switch operation is not easily affected by human factors.

[0031] Specifically, Figure 1 , Figure 2 As shown, the switch operating device of this embodiment is used to operate a three-position switch, and accordingly, the operating mechanism of the switch operating device is a three-position switch operating mechanism. The three-position switch has two closing positions and one opening position, and the two closing positions are an isolation closing position and a grounding closing position, respectively. Accordingly, the three-position switch operating mechanism has two closing states, namely, an isolation closing state corresponding to the isolation closing position of the three-position switch and a grounding closing state corresponding to the grounding closing position of the three-position switch.

[0032] The three-position switch operating mechanism includes a frame 100 and an isolation operating shaft 200 and a grounding operating shaft 300 installed on the frame 100. The frame 100 includes a front plate 101, a middle plate 102 and a rear plate 103 arranged at intervals in the front-to-back direction. The front plate 101 constitutes a panel of the frame 100. The grounding operating shaft 300 is arranged at the lower right side of the isolation operating shaft 200. The isolation operating shaft 200 and the grounding operating shaft 300 are rotatably installed on the middle plate 102 and the rear plate 103. The front ends of the isolation operating shaft 200 and the grounding operating shaft 300 pass through the front plate 101. The isolation operating shaft 200 and the grounding operating shaft 300 are located between the middle plate 102 and the rear plate 103. Part of them are connected through a transmission gear set. When one of the isolation operating shaft 200 and the grounding operating shaft 300 rotates, the other rotates accordingly, and the isolation operating shaft 200 and the grounding operating shaft 300 rotate in the same direction, both rotate clockwise or both rotate counterclockwise. By rotating the isolation operating shaft 200, the isolation closing position and the open position of the three-position switch can be switched. By rotating the grounding operating shaft 300, the grounding closing position and the open position of the three-position switch can be switched. The three-position switch operating mechanism has an open state, an isolation closing state, and a grounding closing state corresponding to the open position, the isolation closing position, and the grounding closing position of the three-position switch, respectively.

[0033] The isolation operation shaft 200 is a switch-opening limit shaft, on which a locking plate 400 is fixed, and the frame 100 is provided with a locking rod 500 for cooperating with the locking plate 400 to lock and unlock the switch-opening limit shaft. Figure 3 , Figure 4 The front side of the middle plate 102 is provided with a locking rod mounting seat 52, and the locking rod 500 is inserted into the locking rod mounting seat 52. The locking rod 500 can reciprocate in the left and right directions. The locking rod 500 is sleeved with a locking rod return spring 51, which is a compression spring. By overcoming the elastic force of the locking rod return spring 51, the locking rod 500 can be withdrawn from the locking groove on the locking plate 400 to achieve unlocking. After the corresponding operating shaft is operated in place, the locking rod return spring 51 can drive the locking rod 500 to return to the locking groove on the locking plate 400 to achieve locking.

[0034] The locking plate 400 is coaxially arranged with the isolation operating shaft 200, and the locking rod 500 moves along the radial direction of the locking plate 400. One end of the locking rod 500 close to the locking plate 400 is used to cooperate with the locking groove on the locking plate 400. The locking plate 400 is provided with locking grooves for respectively corresponding to the opening position, the isolation closing position, and the grounding closing position of the three-position switch, namely, the opening locking groove 41 corresponding to the opening position, the isolation closing locking groove 42 corresponding to the isolation closing position, and the grounding closing locking groove 43 corresponding to the grounding closing position. When the three-position switch operating mechanism is in the opening state, the end of the locking rod 500 is inserted into the opening locking groove 41, when the three-position switch operating mechanism is in the isolation closing state, the end of the locking rod 500 is inserted into the isolation closing locking groove 42, and when the three-position switch operating mechanism is in the grounding closing state, the end of the locking rod 500 is inserted into the grounding closing locking groove 43. The locking rod 500 has a locking state of being inserted into the locking groove and an unlocking state of being withdrawn from the locking groove in its moving stroke. The inner wall of the locking groove is provided with a guiding surface for applying force to the end of the locking rod 500 to push the locking rod 500 to withdraw from the locking groove when the locking plate 400 rotates. When the locking rod 500 is in the locked state, the force exerted by the return spring on the locking rod 500 is sufficient to maintain the position of the locking rod 500 when the three-position switch operating mechanism is not operated.

[0035] When operating the three-position switch operating mechanism, the isolation operating shaft 200 and the grounding operating shaft 300 rotate, and the locking plate 400 rotates with the isolation operating shaft 200. The rotation of the locking plate 400 actively drives the locking rod 500 to move to achieve unlocking. Figure 4 If the locking plate 400 rotates clockwise, a pressing force F will be applied to the end of the locking rod 500. The force F can be decomposed into a force F1 along the moving direction of the locking rod 500 and a force F2 perpendicular to the moving direction of the locking rod 500. The force F1 overcomes the elastic force of the return spring and forces the locking rod 500 to withdraw from the locking groove to achieve unlocking. There is no need to pull the locking rod 500 apart. The locking plate 400 can push the locking rod 500 out of the corresponding locking groove while rotating with the isolation operating shaft 200. The operation is simple and convenient to operate with both hands, with high comfort. After rotating in place, the locking rod 500 is inserted into the corresponding locking groove. Under the elastic force of the return spring and the limiting cooperation between the locking rod 500 and the side wall of the locking groove, the end of the locking rod 500 can be kept in the locking groove when not subject to external force, ensuring normal locking function.

[0036] The locking groove on the locking plate 400 is a through groove that runs axially through the locking plate 400. The notch of the locking groove is located on the outer peripheral surface of the locking plate. The gate-opening locking groove 41, the isolation-closing locking groove 42, and the ground-closing locking groove 43 are arranged at intervals along the circumference of the locking plate 400. The locking groove has two side walls corresponding to the circumference of the locking plate 400. The guiding surface of the locking groove includes an inclined surface that is smoothly connected to the bottom surface of the locking groove and a notch arc surface that is smoothly connected to the outer peripheral surface of the locking plate 400. The bottom surface of the locking groove is a groove bottom arc surface, and the inclined surface is smoothly connected to the notch arc surface and the groove bottom arc surface. The inclined surface constitutes a side wall surface, wherein the two side walls of the gate-opening locking groove 41 The surfaces are used to form guide surfaces on both sides, so as to guide the locking rod 500 to exit the locking groove when the locking plate 400 rotates clockwise or counterclockwise. Correspondingly, the side wall surface of the isolation locking groove 42 and the grounding locking groove 43 close to the opening locking groove 41 is used to form a guide surface. When the locking plate 400 is in the grounding closing state and rotates clockwise, the guide surface of the grounding locking groove 43 can guide the locking rod 500 to exit the grounding locking groove 43. When the locking plate 400 is in the isolation closing state and rotates counterclockwise, the guide surface of the isolation locking groove 42 can guide the locking rod 500 to exit the isolation locking groove 42. The end of the locking rod 500 is provided with a curved surface structure adapted to the bottom arc surface of the locking groove. The curved surface structure is a spherical surface. When the locking rod 500 is in the locked state, the spherical surface of the end of the locking rod 500 abuts against the bottom arc surface of the locking groove, which is conducive to limiting.

[0037] The isolation operation shaft 200 is used to drive the three-position switch to switch between the open position and the isolation closing position, the grounding operation shaft 300 is used to drive the three-position switch to switch between the open position and the grounding closing position, the isolation operation shaft 200 constitutes the opening and closing limit shaft, and the locking disk 400 is arranged on the isolation operation shaft 200. In other implementations, the opening and closing limit shaft can also be constituted by the grounding operation shaft.

[0038] Combination Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9, the operating handle 700 is matched with the operating mechanism to drive the operating shaft to rotate. There are two operating shafts, namely the isolation operating shaft 200 and the grounding operating shaft 300. The operating handle 700 has a corresponding closing position and an opening position corresponding to each operating shaft. The closing position corresponding to the isolation operating shaft is the isolation closing position, and the opening position corresponding to the isolation operating shaft is the isolation opening position. Correspondingly, the closing position corresponding to the grounding operating shaft is the grounding closing position, and the opening position corresponding to the grounding operating shaft is the grounding opening position. When the operating handle 700 rotates and drives the isolation operating shaft 200 to change the operating mechanism from the isolation closing state to the opening state, the operating handle 700 rotates from the isolation closing position to the isolation opening position. When the operating handle 700 rotates and drives the grounding operating shaft 300 to change the operating mechanism from the grounding closing state to the opening state, the operating handle 700 rotates from the grounding closing position to the grounding opening position.

[0039] The front plate 101 of the rack 100 is provided with an isolation operation hole 111 corresponding to the isolation operation shaft 200 and a grounding operation hole 121 corresponding to the grounding operation shaft 300. The isolation operation hole 111 and the grounding operation hole 121 respectively constitute the operation holes corresponding to the corresponding operation shafts. The front plate 101 includes a main board body and a limit sleeve installed on the main board body. The main board body of the front plate 101 is fixedly installed with an isolation limit sleeve 11 and a grounding limit sleeve 12. The isolation limit sleeve 11 and the grounding limit sleeve 12 are both limit sleeves. The limit sleeves are inserted and fixed on the main board body. The center hole of the limit sleeve constitutes the operation hole. Correspondingly, the center hole of the isolation limit sleeve 11 constitutes the isolation operation hole 111, and the center hole of the grounding limit sleeve 12 constitutes the grounding operation hole 121, which is conducive to ensuring the structural strength at the operation hole. The front end of the corresponding operation shaft can extend from the operation hole to facilitate the matching of the operating handle 700. In other embodiments, when the panel thickness is sufficient, the operation hole can also be directly opened on the panel body.

[0040] The isolation limit sleeve 11 and the grounding limit sleeve 12 have the same structure. The limit sleeve includes a sleeve body and a flange at one end of the sleeve body. The main board body of the front panel 101 is provided with a mounting hole for the sleeve body of the limit sleeve to fit through. The flange of the limit sleeve is fixed to the outer side of the main board body of the front panel 101 by screws. The outer side is the front side. The axial dimension of the sleeve body of the limit sleeve is greater than the thickness of the main board body. The rear end of the sleeve body of the limit sleeve extends to the rear side of the main board body, which is conducive to the reliable fixation of the limit sleeve. In other implementations, the limit sleeve may not pass through the main board body, but may be fixed to the front side of the main board body. The main board body is provided with an avoidance hole for avoiding the operating handle so that the operating handle can extend to the inside of the panel.

[0041] The front end of the operating shaft is used to connect one end of the operating handle. The end of the operating shaft used to connect the operating handle is provided with a stop-rotation fitting section. The end of the operating handle 700 is provided with a stop-rotation fitting hole 71 for stop-rotation fitting with the stop-rotation fitting section at the front end of the operating shaft. The stop-rotation fitting hole 71 is an irregular hole. Correspondingly, the stop-rotation fitting section at the front end of the operating shaft is consistent with the shape of the stop-rotation fitting hole 71, so that the operating handle 700 can be sleeved on the front end of the operating shaft at a specific angle to ensure accurate rotation operation. The stop-rotation fitting section at the front end of the operating shaft has four side surfaces arranged around its axis, three of which are planes, and the other side is an arc surface. The arc surface is a convex arc surface and is arranged opposite to one of the planes, thereby forming an irregular shape. The stop-rotation fitting hole 71 is adapted to the shape of the stop-rotation fitting section, so as to form a stop-rotation connection between the operating handle and the operating shaft, and have a set sleeve relationship. The arc surface is used to form an irregular shape with a plane, which is convenient for processing and manufacturing. In other embodiments, a positioning key may be provided on the anti-rotation fitting section, and a positioning groove may be provided on the hole wall of the anti-rotation fitting hole. The positioning key and the positioning groove may be used to form a matching relationship of a set orientation between the operating handle and the operating shaft.

[0042] In order to prevent the operating handle 700 from rotating too far when operating the corresponding operating shaft, a limiting structure for the rotation stroke when the operating handle 700 drives the operating shaft to rotate is provided on the frame 100, wherein the limiting structure for limiting the rotation stroke when the operating handle 700 drives the isolation operating shaft 200 to rotate is an isolation limiting structure, and the limiting structure for limiting the rotation stroke when the operating handle 700 drives the grounding operating shaft 300 is a grounding limiting structure. The isolation limiting structure is used to limit the continued rotation of the operating handle 700 when it rotates to the isolation closing position and the isolation opening position, so that the operating handle 700 reciprocates between the isolation closing position and the isolation opening position when it is connected to the isolation operating shaft 200. The grounding limiting structure is used to limit the continued rotation of the operating handle 700 when it rotates to the grounding closing position and the grounding opening position, so that the operating handle 700 reciprocates between the grounding closing position and the grounding opening position when it is connected to the grounding operating shaft 300.

[0043] A handle limit portion 72 is protruding from the end of the operating handle 700, and the isolation limit structure includes an isolation hole wall limit convex portion 114 arranged on the hole wall of the isolation operating hole 111, and the isolation hole wall limit convex portion 114 is used to cooperate with the handle limit portion 72 on the operating handle 700 to limit the rotational stroke of the operating handle 700 when rotating the isolation operating shaft 200. The grounding limit structure includes a grounding hole wall limit convex portion 124 arranged on the hole wall of the grounding operating hole 121, and the grounding hole wall limit convex portion 124 is used to cooperate with the handle limit portion 72 on the operating handle 700 to limit the rotational stroke of the operating handle 700 when rotating the grounding operating shaft 300. The isolation hole wall limit convex portion 114 and the grounding hole wall limit convex portion 124 respectively constitute the hole wall limit convex portions at the corresponding operating holes, and the operating hole portion is used to form a stop cooperation with the operating handle, the stop is reliable, and the structure is simple. In other embodiments, a limit stop column may be protruding forward on the front plate, and a radially protruding limit matching column may be provided on the operating handle, and the limit stop column may be used to stop the limit matching column to limit the rotational travel of the operating handle.

[0044] When the three-position switch operating mechanism changes from the isolation closing state to the opening state, the operating handle 700 rotates from the isolation closing position to the isolation opening position, and the isolation hole wall limiting protrusion 114 cooperates with the handle limiting part 72 on the operating handle 700. When the three-position switch operating mechanism changes from the grounding closing state to the opening state, the operating handle 700 rotates from the grounding closing position to the grounding opening position, and the grounding hole wall limiting protrusion 124 cooperates with the handle limiting part 72 on the operating handle 700 to prevent excessive rotation during the opening operation.

[0045] To prevent over-rotation during closing operation, Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15, the isolation limit structure also includes an isolation limit column 14 set on the frame 100, and the grounding limit structure also includes a grounding limit column 13 set on the frame 100. The isolation limit column 14 constitutes a closing limit column for limiting the continued rotation of the operating handle 700 when it rotates to the isolation closing position, and the grounding limit column 13 constitutes a closing limit column for limiting the continued rotation of the operating handle 700 when it rotates to the grounding closing position. The closing limit column does not directly stop and cooperate with the operating handle, but limits the rotation operation of the operating handle by stopping the operating shaft that is transmission-connected to the operating handle. The closing and opening limit shaft is an isolation operating shaft 200, and the isolation operating shaft 200 is connected to a limit arm 201. The limit arm 201 rotates with the rotation of the operating shaft. The limit arm 201 is used to stop and cooperate with the isolation limit column 14 when the three-position switch operating mechanism changes from the opening state to the isolation closing state, and to stop and cooperate with the grounding limit column 13 when the three-position switch operating mechanism changes from the opening state to the grounding closing state. The limiting arm on the closing and opening limiting shaft is used in conjunction with the grounding limiting column and the isolation limiting column to realize the grounding closing and isolation closing operations, which is convenient for controlling the position accuracy. In other embodiments, the two side surfaces of the limiting convex part of the isolation hole wall on the circumference of the isolation operation hole are respectively used to limit the handle limiting part of the operating handle when the three-position switch is changed to the isolation closing position and the opening position. The two side surfaces of the limiting convex part of the grounding hole wall on the circumference of the grounding operation hole are respectively used to limit the handle limiting part of the operating handle when the three-position switch is changed to the grounding closing position and the opening position.

[0046] The limit arm 201 is fixedly mounted at the rear end of the isolation operating shaft 200, and is located at the front side of the rear plate 103 of the frame and is arranged close to the rear plate. The limit arm 201 is a plate-shaped structure. The ground limit column 13 and the isolation limit column 14 are installed on the front side of the rear plate 103. The ground limit column 13 and the isolation limit column 14 are both cylindrical. In order to form a reliable limit fit, the limit arm 201 is provided with two opposite limit grooves, which are used to cooperate with the ground limit column 13 and the isolation limit column 14 respectively. When the limit arm 201 swings into place, the corresponding limit column is inserted into the corresponding limit groove. The grounding limit column 13 and the isolation limit column 14 are both eccentric wheel structures. The grounding limit column 13 and the isolation limit column 14 are fixed to the back plate 103 by bolts, and the center line of the bolt hole for the bolt to pass through on the closing limit column is biased to one side of the center axis of the limit column. The position of the closing limit column relative to the limit arm can be adjusted by rotating the closing limit column. After the closing limit column adjusts the position, it can be tightened and fixed by bolts. When the closing limit column and the limit arm are blocked, the operating handle can no longer rotate. The corresponding hole wall limit convex part cooperates with the handle limit part, and the corresponding limit column cooperates with the limit arm to respectively realize the counterclockwise rotation limit and the clockwise rotation limit when the operating handle operates the corresponding operating shaft. When the three-position switch operating mechanism is in the open state, the limit arm 201 is located in the middle position of its swing stroke, and is not blocked by the grounding limit column 13 and the isolation limit column 14.

[0047] The closing limit grooves provided on the hole wall of the isolation operation hole 111 are the isolation closing and plugging limit grooves 112, and the opening limit grooves are the isolation and plugging limit grooves 113. The isolation closing and plugging limit grooves 112, the isolation and plugging limit grooves 113 and the isolation hole wall limiting protrusions 114 are arranged at intervals along the circumference of the isolation operation hole 111. The closing limit grooves provided on the hole wall of the grounding operation hole 121 are the grounding closing and plugging limit grooves 122, and the opening limit grooves are the grounding and plugging limit grooves 123. The grounding closing and plugging limit grooves 122, the grounding and plugging limit grooves 123 and the grounding hole wall limiting protrusions 124 are arranged at intervals along the circumference of the grounding operation hole 121. A closing limit groove and a separate limit groove are provided on the hole wall of the operating hole. The closing limit groove and the separate limit groove are plugging and pulling limit grooves used to limit the plugging and pulling out of the operating handle. The plugging and pulling limit groove is a through groove that passes through from front to back. The groove depth of the plugging and pulling limit groove located at the flange of the limit sleeve is less than the radial thickness of the flange, and the part located at the sleeve body radially passes through the sleeve body. The groove wall surface of the plugging and pulling limit groove located at the flange of the limit sleeve is an arc surface.

[0048] The operating handle 700 is provided with a plug-in limit column 73, and the rear side of the front plate 101, i.e., the inner side of the panel, is provided with a space on the rear side of the front plate 101 for the plug-in limit column 73 on the operating handle 700 to pass through the corresponding plug-in limit groove so that the operating handle 700 can drive the corresponding operating shaft to rotate. The isolation closing plug-in limit groove 112 is used for the plug-in limit column 73 on the operating handle 700 to pass through when the three-position switch is in the isolation closing position so that the operating handle 700 can be inserted into or pulled out of the isolation operation hole 111, and the isolation opening plug-in limit groove 113 is used for the plug-in limit column 73 on the operating handle 700 to pass through when the three-position switch is in the opening position so that the operating handle 700 can be inserted into or pulled out of the isolation operation hole 111. The grounding closing plug-in limit groove 122 is used to allow the plug-in limit column 73 on the operating handle 700 to pass through when the three-position switch is in the grounding closing position so that the operating handle 700 can be inserted into or pulled out of the grounding operating hole 121. The grounding opening plug-in limit groove 123 is used to allow the plug-in limit column 73 on the operating handle 700 to pass through when the three-position switch is in the opening position so that the operating handle 700 can be inserted into or pulled out of the grounding operating hole 121.

[0049] When the operating mechanism is in the open state and needs to be changed to the isolated closed state, when the operating handle 700 is sleeved on the isolated operating shaft 200, the front end anti-rotation fitting section of the isolation operating shaft 200 enters the anti-rotation fitting hole 71 of the operating handle 700, and the handle limiting portion 72 on the operating handle 700 extends into the isolation operating hole 111 and is located on the side of the limiting protrusion 114 of the isolation hole wall. At the same time, the plug-in limiting column 73 passes through the isolation plug-in limiting groove 113 to the rear side of the front plate 101, and the isolation operating shaft 200 is driven to rotate clockwise by rotating the operating handle 700 until the limiting arm 201 stops with the isolation limiting column 14. At this time, the locking rod 500 enters the isolation closing locking groove 42, and the plug-in limiting column 73 corresponds to the isolation closing plug-in limiting groove 112, so that the operating handle 700 can be smoothly withdrawn. On the contrary, when the operating mechanism is in the isolated closing state and needs to be changed to the open state, the isolation closing plug-in limit groove 112 is used to allow the operating handle 700 to be inserted into the isolation operating hole 111. After rotating into place, the handle limit portion 72 is stopped by the isolation hole wall limit protrusion 114, and the plug-in limit column 73 corresponds to the isolation opening plug-in limit groove 113. The isolation opening plug-in limit groove 113 is used to allow the operating handle 700 to withdraw from the isolation operating hole 111.

[0050] Similarly, when the operating mechanism is in the open state and needs to be changed to the grounded closed state, the grounded open plug-in limit groove 123 is used to allow the operating handle 700 to be inserted into the grounded operating hole 121. After rotating in place, the limit arm 201 and the grounded limit column 13 are blocked, and the grounded closed plug-in limit groove 122 is used to allow the operating handle 700 to withdraw from the grounded operating hole 121. Conversely, when the operating mechanism is in the grounded closed state and needs to be changed to the open state, the grounded closed plug-in limit groove 122 is used to allow the operating handle 700 to be inserted into the grounded operating hole 121. After rotating in place, the handle limit portion 72 and the grounding hole wall limit convex portion 124 are blocked, and the grounded open plug-in limit groove 123 is used to allow the operating handle 700 to withdraw from the grounded operating hole 121.

[0051] When the operating handle 700 is not rotated into place, the plug-in limit column 73 is offset from the plug-in limit groove, and the plug-in limit column 73 is blocked by the limit sleeve on the front plate 101, so that the operating handle 700 cannot be withdrawn from the operating hole. When the operating handle 700 is not inserted into place, the plug-in limit column 73 is in the plug-in limit groove, and is blocked by the side wall of the plug-in limit groove, so that the operating handle 700 cannot be rotated, thereby achieving a foolproof effect.

[0052] The end of the operating handle 700 used to cooperate with the operating shaft is provided with a sleeve portion used to be sleeved on the operating shaft to drive the operating shaft to rotate, and the inner hole of the sleeve portion is a rotation-stopping matching hole 71. The handle limiting portion 72 is an arc-shaped piece convexly arranged along the axial direction based on the sleeve portion, and the projection of the arc-shaped piece in the extension direction of the rotation-stopping matching hole 71 is an arc-shaped, and the center of the circle where the arc is located is located on the center line of the rotation-stopping matching hole 71. The outer peripheral surface of the arc-shaped piece is flush with the outer peripheral surface of the sleeve portion, and the arc-shaped piece has an inner arc surface facing the side where the axis of the sleeve portion is located and an outer arc surface facing away from the inner arc surface. The plug-in and pull-out limiting column 73 is arranged on the handle limiting portion 72, and the plug-in and pull-out limiting column 73 is arranged on the arc-shaped piece and protrudes from the outer arc surface of the arc-shaped piece, and the arc-shaped piece is adapted to the size of the operating hole. Using the arc-shaped piece to form the handle limiting portion and setting the plug-in and pull-out limiting column on the arc-shaped piece is conducive to reducing the size of the operating handle and ensuring the structural strength. In other embodiments, a limit groove can also be set on the outer circumferential surface of the sleeve portion of the operating handle, and the limit groove is used to cooperate with the limit protrusion of the hole wall to form a stop fit. The circumferential extension length of the limit groove in the sleeve portion meets the rotation requirements of the operating handle. At this time, the plug-in limit column can be set on the outer circumferential surface of the sleeve portion.

[0053] The handle limit portion 72 has two end faces in the direction in which the arc extends, and the distance between one end face and the plug-in limit column 73 is smaller than the distance between the other end face and the plug-in limit column 73. The plug-in limit column 73 is arranged near the edge of one of the two ends of the handle limit portion 72 extending along the arc, so as to facilitate the operating handle to align with the connecting operating shaft in the set orientation. In other embodiments, the plug-in limit column can also be arranged in the middle position in the direction in which the arc extends of the arc-shaped piece. In this embodiment, one end of the operating shaft for connecting the operating handle extends outside the panel, so as to facilitate the plug-in limit column to cross the corresponding plug-in limit groove and make the operating handle reliably connected to the operating shaft. In other embodiments, the operating shaft may not protrude outward from the operating hole.

[0054] Combination Figure 1 , Fig.16 , Fig.17 , Fig.18 , Fig.19 , Fig. 20 , Fig.21 A rotatable baffle structure is provided on the frame 100, and the baffle structure includes an interlocking baffle 600 and an auxiliary shaft 61. The auxiliary shaft 61 is rotatably mounted on the front plate 101 and the middle plate 102. The portion of the auxiliary shaft 61 located between the front plate 101 and the middle plate 102 is transmission-connected to the grounding operating shaft 300 through a gear set. When the grounding operating shaft 300 rotates, the auxiliary shaft 61 is driven to rotate. The front end of the auxiliary shaft 61 located on the front side of the front plate 101 is fixed with the interlocking baffle 600, and when the corresponding operating shaft rotates, the interlocking baffle 600 is driven to rotate. The interlocking baffle 600 has an isolation blocking position in its rotation stroke that blocks the isolation operating hole 111 and makes way for the grounding operating hole 121, a grounding blocking position that blocks the grounding operating hole 121 and makes way for the isolation operating hole 111, and a gate-opening position that makes way for the isolation operating hole 111 and the grounding operating hole 121.

[0055] When the operating mechanism is in the open state, Fig. 9 , Fig.10 As shown, the interlocking baffle 600 is in the open position, and will not block the grounding operation hole 121 and the isolation operation hole 111, and the locking rod 500 enters the open locking groove 41. When the operating mechanism changes from the open state to the isolation closed state, the operating handle 700 cooperates with the isolation operating shaft 200 and rotates clockwise, and accordingly, the grounding operating shaft 300 rotates clockwise. Fig.11 , Fig.12 As shown, the interlocking baffle 600 moves counterclockwise to the grounding shielding position to gradually shield the grounding operation hole 121, and the locking rod 500 withdraws from the opening locking groove 41 and abuts against the outer peripheral surface of the locking plate 400. When the interlocking baffle 600 is in the grounding shielding position, the grounding operation shaft 300 cannot be operated. When the operating mechanism changes from the opening state to the grounding closing state, the operating handle 700 cooperates with the grounding operation shaft 300 and rotates counterclockwise, as shown in FIG. Fig.13, Fig.14 As shown, the interlocking baffle 600 moves clockwise to the isolation shielding position to gradually shield the isolation operation hole 111, and the locking rod 500 withdraws from the gate-opening locking groove 41 and abuts against the outer peripheral surface of the locking plate 400. When the interlocking baffle 600 is in the isolation shielding position, the operating handle cannot operate the isolation operation shaft 200 to prevent misoperation. In other embodiments, if space permits, the auxiliary shaft can also be connected to the isolation operation shaft in a transmission manner.

[0056] The interlocking baffle 600 is provided with an indicator mark to cooperate with the corresponding indicator mark on the cabinet body of the switch cabinet. After the operating mechanism is operated into place, the corresponding relationship between the mark on the interlocking baffle 600 and the mark on the cabinet body can be used to prompt the operator of the current state of the operating mechanism.

[0057] The auxiliary shaft 61 is sleeved with an interlocking member, which includes an integrally connected sleeve and an interlocking baffle 800. The sleeve is sleeved on the portion of the auxiliary shaft 61 located between the front plate 101 and the interlocking baffle 600. The front end of the sleeve is connected to the interlocking baffle 800. The interlocking baffle 800 is arranged perpendicular to the sleeve. The interlocking member does not rotate with the auxiliary shaft 61. The interlocking member is sleeved on the auxiliary shaft 61. The interlocking member can rotate relative to the auxiliary shaft. The interlocking member is connected to the action member of the circuit breaker operating mechanism of the switch cabinet through the transmission connecting rod 801. This action member is a component used to realize the opening and closing action of the circuit breaker operating mechanism. When the circuit breaker operating mechanism drives the circuit breaker to close, the transmission link 801 is pulled by the corresponding action member, and the transmission link 801 drives the interlocking member to rotate, so that the interlocking baffle 800 blocks the isolation operation hole 111 and the grounding operation hole 121, so that the three-position switch operating mechanism cannot be operated; when the circuit breaker operating mechanism drives the circuit breaker to open, the transmission link 801 is pulled by the corresponding action member, and the transmission link 801 drives the interlocking member to rotate, so that the interlocking baffle 800 clears the isolation operation hole 111 and the grounding operation hole 121, so that the three-position switch operating mechanism can be operated, thereby realizing the interlocking function of the circuit breaker and the three-position switch.

[0058] The operating mechanism in this embodiment is a three-position switch operating mechanism for a three-position switch. In other implementations, the operating mechanism may also be an operating mechanism for an isolating switch or an operating mechanism for a grounding switch. In this case, the operating mechanism has only one operating shaft for cooperating with the operating handle. Accordingly, the operating mechanism has one closing state, and the operating handle has a closing position and an opening position in the rotational stroke when rotating the operating shaft. A set of limit structures is provided to limit the two positions of the operating handle.

[0059] Embodiments of the switch cabinet of the present invention: The switch cabinet includes a cabinet body, a switch arranged in the cabinet body, and a switch operating device matched with the switch. The switch operating device in this embodiment is the same as the switch operating device in the above embodiment, and will not be described again here.

[0060] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A switch operating device, comprising an operating mechanism and an operating handle, wherein the frame of the operating mechanism is provided with an operating shaft, and the panel of the frame is provided with an operating hole for the operating handle to pass through and connect the operating shaft to perform opening and closing operations, and the operating handle has a closing position and an opening position corresponding to the closing state and the opening state of the operating mechanism, respectively, and is characterized in that: The frame is provided with a limiting structure for limiting the rotation of the operating handle when it is rotated to the closed position or the open position. The hole wall of the operating hole is provided with a closed position limiting groove and an open position limiting groove. The operating handle is provided with a plug-in limit column. The closed position limiting groove and the open position limiting groove are respectively used for the plug-in limit column to pass through when the operating mechanism is in the closed state or the open state so that the operating handle can be inserted into or pulled out of the operating hole, and the panel blocks the operating handle when it is offset from the plug-in limit column.

2. The switch operating device according to claim 1, characterized in that: The limiting structure includes a hole wall limiting convex portion arranged on the hole wall of the operating hole, the hole wall limiting convex portion and the combined limiting groove and the separated limiting groove are spaced apart in the circumferential direction of the operating hole, and a handle limiting portion is provided on the operating handle, and the hole wall limiting convex portion is used to cooperate with the handle limiting portion on the operating handle to limit the rotational stroke of the operating handle when the operating shaft is rotated.

3. The switch operating device according to claim 2, characterized in that: The limit protrusion on the hole wall is used to cooperate with the handle limit part on the operating handle when the operating mechanism changes from the closed state to the open state. The limit structure also includes a closing limit column arranged on the frame. The operating mechanism includes a limit arm that is transmission-connected to the operating shaft. The limit arm is used to cooperate with the closing limit column when the operating mechanism changes from the open state to the closed state.

4. The switch operating device according to claim 2 or 3, characterized in that: The operating handle includes a sleeve portion used to be sleeved on the operating shaft to drive the operating shaft to rotate. The handle limiting portion is an arc-shaped piece convexly arranged axially based on the sleeve portion. The arc-shaped piece has an inner arc surface facing the side where the axis of the sleeve portion is located and an outer arc surface facing away from the inner arc surface. The insertion and extraction limiting column is arranged on the arc-shaped piece and protrudes from the outer arc surface.

5. The switch operating device according to claim 4, characterized in that: The arc-shaped piece has two end surfaces in the extending direction of the arc line, and the distance between one end surface and the plugging and pulling limiting column is smaller than the distance between the other end surface and the plugging and pulling limiting column.

6. The switch operating device according to claim 1, 2 or 3, characterized in that: One end of the operating shaft used for connecting with the operating handle extends out of the panel.

7. The switch operating device according to claim 1, 2 or 3, characterized in that: The panel comprises a main board body and a limiting sleeve installed on the main board body, and a central hole of the limiting sleeve constitutes the operating hole.

8. The switch operating device according to claim 7, characterized in that: The limiting sleeve comprises a sleeve body and a flange located at one end of the sleeve body. The main board body is provided with a mounting hole for the sleeve body to fit through, and the flange is fixed on the outer side of the main board body.

9. The switch operating device according to claim 1, 2 or 3, characterized in that: One end of the operating shaft for connecting to the operating handle is provided with a non-rotation fitting section, the non-rotation fitting section has an arc surface and a plane arranged opposite to each other, and the operating handle is provided with a non-rotation fitting hole adapted to the non-rotation fitting section to form a non-rotation connection between the operating handle and the operating shaft.

10. Switchgear, characterized in that, The switch operating device comprises any one of claims 1 to 9.

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