An operating mechanism for load switch of inflatable cabinet

Abstract

The present invention relates to an operating mechanism for an inflatable cabinet load switch, including a mechanism body part and a mechanism interlocking part. The mechanism body part includes a driving shaft, and a limit step is arranged on the driving shaft, so as to protect the tripping arm from colliding with the tripping plate and preventing damage to the tripping plate; this mechanism drives the rotating shaft while operating the load switch body to rotate, and the rotating shaft then drives the transmission rod to rotate through the connecting rod transmission, thereby driving the indicator plate fixedly installed at one end of the connecting rod, and only one set of indicating devices is used to solve the opening and closing indication of the main circuit and the grounding circuit. The interlocking part is composed of an interlocking plate, a padlock slide plate, an interlocking plate body and a padlock bracket, and the padlock bracket is provided with three position locking holes, which play different padlock protection functions; the padlock slide plate is provided with a protective plate, and the protective plate slides with the padlock slide plate and cooperates with the switch cabinet door to ensure that the padlock slide plate sliding groove arranged on the front panel of the cabinet is always blocked, so as to meet the protection level requirements of the cabinet.

Description

Technical Field

[0001] The invention belongs to the technical field of operating mechanisms for load switches, and in particular relates to an operating mechanism for a load switch of an inflatable cabinet. Background Art

[0002] According to the different forms of energy, the operating mechanism can be divided into manual operating mechanism (CS), electromagnetic operating mechanism (CD), spring operating mechanism (CT), and motor operating mechanism (CJ). The closing energy of the operating mechanism fundamentally comes from manpower or electricity. These two energy sources can also be converted into other energy forms, such as electromagnetic energy, spring potential energy, gravity potential energy, gas or liquid compression energy, etc.

[0003] Most load switches can rely on the energy storage spring installed on the load switch to provide energy for the opening operation, but some pneumatic operating mechanisms and hydraulic operating mechanisms can also use the energy provided by the operating mechanism itself to complete the opening operation of the load switch. The operating mechanism is generally an independent product. One type of operating mechanism can be matched with several different types of load switches; similarly, one type of load switch can also be matched with several different types of operating mechanisms. There are also operating mechanisms that are integrated with the load switch, and some load switches are only equipped with their dedicated operating mechanisms.

[0004] The lifting mechanism is a mechanism that drives the moving contact of the load switch. It can make the moving contact move along a certain trajectory, usually in a linear motion or approximately linear motion. The transmission mechanism is the intermediate link between the operating mechanism and the lifting mechanism. Since the operating mechanism and the lifting mechanism are often separated by a certain distance, and their movement directions are often inconsistent, it is necessary to add a transmission mechanism; but in some cases, the transmission mechanism may not be needed. The lifting mechanism and the transmission mechanism are usually composed of a connecting rod mechanism.

[0005] The speed of load switch operation is very high. In order to reduce impact and avoid damage to parts, it is necessary to install a buffer between opening and closing. The buffer is mostly installed near the lifting mechanism. The operating mechanism operates according to the opening and closing signals. According to the operation and maintenance requirements, in addition to the electrical signal indication of opening and closing, the operating mechanism and the load switch should also have a mechanical indicator reflecting the opening and closing position.

[0006] The defect of the load switch operating mechanism in the prior art is that the indicating driving force is not taken from the load switch body. When the opening and closing indication is in place, the actual opening operation of the load switch is not in place or there is no opening and closing at all. Summary of the invention

[0007] The object of the present invention is to provide an operating mechanism for an inflatable cabinet load switch in which the indicating driving force is taken from the load switch body in order to solve the above-mentioned problem.

[0008] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0009] An operating mechanism for an inflatable cabinet load switch comprises a frame, a mechanism body part and a mechanism interlocking part, wherein the frame comprises a first frame plate, a middle partition plate and a second frame plate, the first frame plate and the second frame plate are fixedly connected by pillars, and the middle partition plate is fixedly connected to the second frame plate by a column;

[0010] The interlocking part of the mechanism is composed of an interlocking plate weldment, a padlock slide, an interlocking plate body and a padlock bracket. The interlocking plate body is fixedly installed on the front plate of the mechanism, the padlock slide is fixedly installed with the interlocking plate weldment, and can move up and down relative to the interlocking plate body. The padlock bracket is fixedly installed on the surface of the front panel of the cabinet, and a padlock hole is arranged on the padlock slide. At the same time, three position locking holes are arranged on the padlock bracket. The three position locking holes respectively play different padlock protection functions. At the top lock hole position, the padlock slide locks the load switch main circuit opening and closing main shaft hole, and the load The switch cannot perform the main circuit opening and closing actions. In the main circuit opening state, the lower operating shaft can be operated to ground (the grounding operating shaft cannot be operated when the main circuit is closed, and there is an interlock inside the mechanism); at the bottom lock hole position, the padlock slide locks the load switch grounding operating shaft hole, and the upper mechanism main circuit opening and closing main shaft can be operated (the mechanism cannot be operated when the grounding circuit is grounded, the main circuit opening and closing main shaft, there is an interlock inside the mechanism), and the middle lock hole position will lock the opening and closing main shaft hole and the grounding operating shaft hole, and the mechanism cannot perform any action;

[0011] The main body of the mechanism includes an opening and closing switch operating device, an earthing switch operating device, a spring energy storage device, an opening tripping device and a tripping limit mechanism. The opening and closing switch operating device includes an opening and closing main shaft and an opening and closing crank arm. The opening and closing main shaft is rotatably matched with the first frame plate through a shaft sleeve, and its outer end extends out of the first frame plate. The opening and closing crank arm is connected to the opening and closing main shaft. A plurality of groups of linkage combined micro switches are arranged on the second frame plate on one side of the opening and closing crank arm.

[0012] The grounding switch operating device comprises a grounding switch operating shaft and a grounding crank arm, the grounding switch operating shaft is sleeved with the grounding crank arm, the grounding switch operating shaft is rotatably matched with the first frame plate through a shaft sleeve, the outer end of the grounding switch operating shaft extends out of the first frame plate, and an independent micro switch is provided on the second frame plate on one side of the grounding crank arm;

[0013] A spring energy storage device is provided between the grounding switch operating device and the opening and closing switch operating device. One end of the grounding switch operating device extends out of one side of the frame and can be rotated under manual drive to drive the spring energy storage device to store energy. When the spring energy storage device rotates past the maximum energy storage position, the stored energy is released to allow the grounding switch operating device to continue to rotate. At this time, the grounding switch operating device outputs torque through the grounding arm. The opening and closing switch operating device has the same principle as the grounding switch operating device.

[0014] The opening tripping device includes a tripping plate, a tripping tension spring, a tripping shaft, a tripping limit crank arm and a tripping linkage crank arm. The tripping shaft is rotatably mounted on the first frame plate through the tripping plate. The tripping limit crank arm and the tripping linkage crank arm are fixedly connected together and rotatably mounted on the opening and closing main shaft. A tripping pin is provided between the tripping limit crank arm and the tripping linkage crank arm. One end of the tripping tension spring is rotatably hung on the tripping pin, and the other end is rotatably mounted on the first frame plate through a pin. The tripping linkage crank arm can be linked with the opening and closing main shaft to store energy or drive the opening and closing main shaft to reverse when the stored energy is released. The opening tripping device also includes a tripping energy storage holding device in a tripping energy storage state. The tripping energy storage holding device acts on the tripping limit crank arm and keeps the tripping tension spring in the energy storage state.

[0015] After the tripping tension spring is stretched, it can be maintained in the energy storage state without the action of external force. This function is achieved by a tripping energy storage holding device, which includes a semi-axle cutout arranged on the tripping shaft and matched with the outer end of the tripping limit crank arm, and a reset torsion spring sleeved on the tripping shaft. One end of the reset torsion spring is hung on the tripping shaft, and the other end is fixed on the tripping plate. When the tripping linkage crank arm and the tripping limit crank arm rotate under the drive of the opening and closing main shaft, the outer end of the tripping limit crank arm just passes through the semi-axle cutout. During the rotation process, the outer end of the tripping limit crank arm always keeps in contact with the cross-section of the semi-axle cutout, thereby driving the tripping shaft to rotate through the semi-axle cutout. When the tripping limit crank arm rotates to break away from the interference with the semi-axle cutout, the tripping shaft is reset under the action of the reset torsion spring, and the arc on the back of the semi-axle cutout limits the tripping limit crank arm in the stretched state of the tripping tension spring, thereby achieving energy storage retention.

[0016] The energy storage state of the tripping tension spring can be unlocked by external force, and this function can be achieved by a tripping unlocking device, which includes a tripping plate and a tripping connecting plate that can push the tripping plate to rotate, the tripping plate is installed on the tripping shaft and can drive the tripping shaft to rotate, the tripping connecting plate is hung on the second mechanism plate and can move within a certain range, and the movement method, for example, is that a waist-shaped hole is provided on the tripping connecting plate, and the waist-shaped hole is hung on the second mechanism plate through a pin, when the tripping connecting plate is lifted up, its upper end lifts one end of the tripping plate, driving the tripping plate to rotate, so that the tripping shaft rotates to the outer end of the semi-shaft cutout facing the tripping limit crank arm, at this time, the limiting state of the tripping limit crank arm is released, and the tripping unlocking is realized, and after the tripping is unlocked, under the action of the restoring force of the tripping tension spring, the tripping limit crank arm and the tripping linkage crank arm rotate synchronously, driving the opening and closing main shaft to reverse, thereby realizing the opening operation.

[0017] The tripping limit mechanism includes a limit hook, a shaft weldment and an electric mechanism drive shaft. The middle partition is provided with a limit hook, the opening and closing main shaft is provided with a shaft weldment, the electric mechanism drive shaft is provided on the shaft weldment, and the electric mechanism drive shaft is provided with a limit step. The electric mechanism drive shaft cooperates with the limit hook on the middle partition;

[0018] The driving shaft of the electric mechanism is used as the limit shaft of the opening and closing main shaft when the mechanism is not equipped with a motor. The opening and closing main shaft rotates under the drive of external force, driving the tripping arm and the closing device to the required position. In order to prevent the tripping device from continuing to rotate and thus damaging the tripping plate, when the limit step reaches the limit hook, the limit hook prevents the opening and closing main shaft from continuing to rotate, thereby protecting the tripping arm from colliding with the tripping plate and preventing damage to the tripping plate.

[0019] As a further optimization scheme of the present invention, the mechanism interlocking part also includes a lower door interlocking mechanism, and the lower door interlocking of the switch cabinet is completed by the cooperation of the lower door interlocking plate and the lever in cooperation with the cam sleeve; the cam sleeve is placed on the first frame plate and fixedly installed on the opening and closing main shaft, and the lower door interlocking plate and the lever are connected to the first frame plate through a pin shaft.

[0020] As a further optimization scheme of the present invention, a protective plate is installed on the padlock slide. The protective plate slides with the padlock slide and cooperates with the switch door to ensure that the padlock slide sliding groove set on the front panel of the cabinet is always blocked to meet the protection level requirements of the cabinet.

[0021] As a further optimization scheme of the present invention, the spring energy storage device includes a compression spring, a first compression spring head, a second compression spring head, a first spring crank arm and a second spring crank arm. The opening and closing main shaft is provided with a first spring crank arm, and the earthing switch operating shaft is provided with a second spring crank arm. The first compression spring head and the second compression spring head are connected by a telescopic connecting rod, and the compression spring is sleeved on the telescopic connecting rod. The first compression spring head is hinged to the second spring crank arm on the earthing switch operating shaft through a pin shaft, and the second compression spring head is hinged to the first spring crank arm on the opening and closing main shaft through a pin shaft. When the earthing switch operating device rotates, it will drive the first compression spring head to compress the compression spring to store energy; when the opening and closing main shaft rotates, the second compression spring head will compress the compression spring in the opposite direction to store energy.

[0022] As a further optimization solution of the present invention, the telescopic connecting rod is two sleeve-connected pipes with clearance fit.

[0023] As a further optimization scheme of the present invention, the separation and combination crank arm and the grounding crank arm are both provided with output pins, and the second frame plate is provided with an arc-shaped output groove that is gap-matched with the output pin.

[0024] As a further optimization scheme of the present invention, the main body of the mechanism also includes an indicating mechanism, which includes an indicating sign, a transmission rod, an indicating connecting rod, an indicating short connecting rod, an indicating long connecting rod and an indicating rotating shaft. A clamping device is provided on the indicating rotating shaft, and the indicating rotating shaft is movably connected to the rotating shaft of the load switch body through the clamping device. The indicating short connecting rod is fixedly connected to the tail of the indicating rotating shaft. One end of the indicating long connecting rod is rotatably connected to the indicating short connecting rod through a pin shaft, and the other end is rotatably connected to the indicating connecting rod through a pin shaft. The indicating connecting rod is fixedly connected to one end of the transmission rod, and the other end of the transmission rod is fixedly connected to the indicating sign. The operating mechanism drives the load switch body to rotate and drives the indicating shaft at the same time. The indicating shaft then drives the transmission rod to rotate through the connecting rod transmission, thereby driving the indicator plate fixedly installed at one end of the transmission rod to rotate to indicate the correct main circuit opening and closing position of the switch and the correct position of the grounding circuit. Since the indicating driving force of this structure comes from the rotation of the main shaft of the load switch body, compared with the original structure, only one set of indicating devices is used to solve the opening and closing indication of the main circuit and the grounding circuit. At the same time, compared with the original structure, there is no situation where the indication is not in place. The indicating driving force of the original structure is not taken from the load switch body. When the opening and closing indication is in place, the actual opening operation of the load switch is not in place or there is no opening and closing at all. This structure completely avoids this situation.

[0025] As a further optimization solution of the present invention, the indicating shaft is arranged at the center of the second frame plate.

[0026] As a further optimization solution of the present invention, the load switch body refers to the load switch body to which the operating mechanism is connected, and the rotating shaft of the load switch body is connected to the indicating rotating shaft.

[0027] The beneficial effects of the present invention are:

[0028] 1) The indicating driving force of the indicating mechanism of the present invention comes from the rotation of the main shaft of the load switch body. Compared with the original structure, only one set of indicating devices is used to solve the opening and closing indication of the main circuit and the grounding circuit. At the same time, compared with the original structure, there is no situation where the indication is not in place. The indicating driving force of the original structure is not taken from the load switch body. When the opening and closing indication is in place, the actual opening operation of the load switch is not in place or there is no opening and closing at all. This structure completely avoids this situation;

[0029] 2) The interlocking part of the mechanism of the present invention plays different padlock protection functions. The top padlock locks the load switch main circuit opening and closing operation hole, and the load switch cannot perform the main circuit opening and closing action. The lower operating shaft can be operated to ground in the main circuit opening state; the bottom padlock locks the load switch grounding operation shaft hole, and the upper mechanism main circuit opening and closing operation shaft can be operated. The middle lock hole position locks the upper and lower operating shaft operation holes, and the mechanism cannot perform any action;

[0030] 3) A protective plate is installed on the padlock slide of the present invention, and the protective plate slides with the padlock slide and cooperates with the switch door to ensure that the padlock slide sliding groove set on the front panel of the cabinet is always blocked to meet the protection level requirements of the cabinet;

[0031] 4) The driving shaft of the electric mechanism of the present invention is used as the limit shaft of the opening and closing main shaft when the mechanism is not equipped with a motor. The opening and closing main shaft rotates under the drive of an external force, driving the tripping arm and the closing device to the required position. In order to prevent the tripping device from continuing to rotate and thus damaging the tripping plate, when the limit step reaches the limit hook, the limit hook prevents the opening and closing main shaft from continuing to rotate, thereby protecting the tripping arm from colliding with the tripping plate and preventing damage to the tripping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the present invention connected to a cabinet in Embodiment 1;

[0033] Figure 2 The overall structure of the present invention in the first embodiment is shown in FIG. Figure 1 ;

[0034] Figure 3 The overall structure of the present invention in the first embodiment is shown in FIG. Figure 2 ;

[0035] Figure 4 is an exploded view of the present invention in Embodiment 1;

[0036] Figure 5 It is a schematic diagram of the structure of the present invention in Embodiment 1;

[0037] Figure 6 It is a structural schematic diagram of the tripping and limiting mechanism of the present invention in the first embodiment.

[0038] In the figure:

[0039] A first frame plate 101, a middle partition plate 102, and a second frame plate 103;

[0040] Interlock plate weldment 201, padlock slide plate 202, interlock plate body 203, padlock bracket 204, cam sleeve 205, lower door interlock plate 206, lever 207, protective plate 208, position locking hole 209;

[0041] The opening and closing main shaft 301, the opening and closing crank arm 302, multiple groups of linkage combination micro switches 303, the grounding switch operating shaft 304, the grounding crank arm 305, and the independent micro switch 306;

[0042] Compression spring 401, first compression spring head 402, second compression spring head 403, first spring arm 404, second spring arm 405;

[0043] A trip plate 501, a trip tension spring 502, a trip shaft 503, a trip limit arm 504, a trip linkage arm 505, a reset torsion spring 506, a trip connecting plate 507, a limit hook 508, a shaft weldment 509, and an electric mechanism drive shaft 510;

[0044] Indicator plate 601, transmission rod 602, indicator connecting rod 603, indicator short connecting rod 604, indicator long connecting rod 605, indicator rotating shaft 606;

[0045] Cabinet front panel 901 and padlock slide plate sliding slot 911. DETAILED DESCRIPTION

[0046] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0047] Embodiment 1

[0048] like Figure 1-6 As shown, an operating mechanism for an inflatable cabinet load switch includes a frame, a mechanism body part and a mechanism interlocking part, the frame includes a first frame plate 101, a middle partition plate 102 and a second frame plate 103, the first frame plate 101 and the second frame plate 103 are fixedly connected by pillars, and the middle partition plate 102 is fixedly connected to the second frame plate 103 by a column;

[0049] The interlocking part of the mechanism is composed of an interlocking plate weldment 201, a padlock slide 202, an interlocking plate body 203 and a padlock bracket 204. The interlocking plate weldment 201 is fixedly mounted on the front plate of the mechanism, the padlock slide 202 is fixedly mounted on the interlocking plate weldment 201, and can move up and down relative to the interlocking plate body 203. The padlock bracket 204 is fixedly mounted on the surface of the cabinet front panel 901, and a padlock hole is provided on the padlock slide 202. At the same time, three position locking holes 209 are provided on the padlock bracket 204. The three position locking holes 209 respectively play different padlock protection functions. At the top lock hole position, the padlock slide 202 locks the negative The load switch main circuit breaking and closing main shaft 301 hole, the load switch cannot perform the main circuit breaking and closing action, the lower operating shaft can be operated to ground in the main circuit breaking state (the grounding operating shaft cannot be operated in the main circuit closing state, and there is an interlock inside the mechanism); the lowest lock hole position, the padlock slide 202 locks the load switch grounding operating shaft hole, the upper mechanism main circuit breaking and closing main shaft 301 can be operated (the mechanism cannot be operated in the grounding state of the grounding circuit, the main circuit breaking and closing main shaft 301, there is an interlock inside the mechanism), the middle lock hole position will lock the breaking and closing main shaft 301 hole and the grounding operating shaft hole, the mechanism can not do any action;

[0050] Preferably, the interlocking part of the mechanism also includes a lower door interlocking mechanism, and the lower door interlocking of the switch cabinet is completed by the cooperation of the lower door interlocking plate 206 and the lever 207 in cooperation with the cam sleeve 205; the cam sleeve 205 is placed on the first frame plate 101 and fixedly installed on the opening and closing main shaft 301, and the lower door interlocking plate 206 and the lever 207 are connected to the first frame plate 101 through a pin shaft.

[0051] Preferably, a protective plate 208 is installed on the padlock slide 202, and the protective plate 208 slides with the padlock slide 202 and cooperates with the switch door to ensure that the padlock slide sliding groove 911 set on the cabinet front panel 901 is always blocked to meet the protection level requirements of the cabinet.

[0052] The main body of the mechanism includes an opening and closing switch operating device, an earthing switch operating device, a spring energy storage device, an opening tripping device and a tripping limit mechanism. The opening and closing switch operating device includes an opening and closing main shaft 301 and an opening and closing crank arm 302. The opening and closing main shaft 301 is rotatably matched with the first frame plate 101 through a shaft sleeve, and its outer end extends out of the first frame plate 101. The opening and closing crank arm 302 is movably connected to the opening and closing main shaft 301, and the opening and closing crank arm 302 can rotate along the axis. A plurality of groups of linkage combined micro switches 303 are provided on the second frame plate 103 on one side of the opening and closing crank arm 302;

[0053] The grounding switch operating device includes a grounding switch operating shaft 304 and a grounding crank arm 305. The grounding switch operating shaft 304 is sleeved with the grounding crank arm 305. The grounding switch operating shaft 304 is rotatably matched with the first frame plate 101 through a shaft sleeve, and its outer end extends out of the first frame plate 101. An independent micro switch 306 is provided on the second frame plate 103 on one side of the grounding crank arm 305.

[0054] The spring energy storage device includes a compression spring 401, a first compression spring head 402, a second compression spring head 403, a first spring arm 404 and a second spring arm 405. The opening and closing main shaft 301 is provided with a first spring arm 404, and the grounding switch operating shaft 304 is provided with a second spring arm 405. The first compression spring head 402 and the second compression spring head 403 are connected by a telescopic connecting rod. The compression spring 401 is sleeved on the telescopic connecting rod. The first compression spring head 402 is hinged to the second spring arm 405 on the grounding switch operating shaft 304 through a pin shaft, and the second compression spring head 403 is hinged to the first spring arm 404 on the opening and closing main shaft 301 through a pin shaft. When the grounding switch operating device rotates, it will drive the first compression spring head 402 to compress the compression spring 401 to store energy; when the opening and closing main shaft 301 rotates, the second compression spring head 403 will compress the compression spring 401 in the opposite direction to store energy.

[0055] Preferably, the telescopic connecting rod is two sleeve-connected pipes with clearance fit.

[0056] Preferably, both the separation and combination crank arm 302 and the ground crank arm 305 are provided with output pins, and the second frame plate 103 is provided with an arc-shaped output groove that is gap-matched with the output pin.

[0057] A spring energy storage device is provided between the grounding switch operating device and the opening and closing switch operating device. One end of the grounding switch operating device extends out of one side of the frame and can be rotated under manual drive to drive the spring energy storage device to store energy. When the spring energy storage device rotates past the maximum energy storage position, the stored energy is released to allow the grounding switch operating device to continue to rotate. At this time, the grounding switch operating device outputs torque through the grounding crank arm 305. The opening and closing switch operating device has the same principle as the grounding switch operating device.

[0058] The opening tripping device comprises a tripping plate 501, a tripping tension spring 502, a tripping shaft 503, a tripping limit arm 504 and a tripping linkage arm 505. The tripping shaft 503 is rotatably mounted on the first frame plate 101 through the tripping plate 501. The tripping limit arm 504 and the tripping linkage arm 505 are fixedly connected together and rotatably mounted on the opening and closing main shaft 301. A tripping pin is arranged between the tripping limit arm 504 and the tripping linkage arm 505. One end of the tension spring 502 is rotatably hung on the trip pin, and the other end is rotatably mounted on the first frame plate 101 through a pin. The trip linkage crank arm 505 can be linked with the opening and closing main shaft 301 to store energy or drive the opening and closing main shaft 301 to reverse when the stored energy is released. The opening trip device also includes a trip energy storage holding device in the trip energy storage state. The trip energy storage holding device acts on the trip limit crank arm 504 and keeps the trip tension spring 502 in the energy storage state.

[0059] After the trip tension spring 502 is stretched, it can be maintained in the energy storage state without external force. This function is achieved by a trip energy storage holding device, which includes a semi-axis cutout arranged on the trip shaft 503 and matched with the outer end of the trip limit arm 504, and a reset torsion spring 506 sleeved on the trip shaft 503. One end of the reset torsion spring 506 is hung on the trip shaft 503, and the other end is fixed on the trip plate 501. When the trip linkage arm 505 and the trip limit arm 504 are in the opening and closing main shaft, When driven by 301 to rotate, the outer end of the tripping limit arm 504 just passes through the semi-axle cutout. During the rotation process, the outer end of the tripping limit arm 504 always keeps in contact with the cross-section of the semi-axle cutout, thereby driving the tripping shaft 503 to rotate through the semi-axle cutout. When the tripping limit arm 504 rotates to break away from the interference with the semi-axle cutout, the tripping shaft 503 is reset under the action of the reset torsion spring 506, and the arc on the back of the semi-axle cutout limits the tripping limit arm 504 in the stretched state of the tripping tension spring 502, thereby realizing energy storage retention.

[0060] The energy storage state of the tripping tension spring 502 can be unlocked by external force, and this function can be realized by a tripping unlocking device, which includes a tripping plate 501 and a tripping connecting plate 507 capable of pushing the tripping plate 501 to rotate, the tripping plate 501 is installed on the tripping shaft 503 and can drive the tripping shaft 503 to rotate, the tripping connecting plate 507 is hung on the second mechanism plate and can move within a certain range, and the moving method is, for example, as shown in the figure, a waist-shaped hole is provided on the tripping connecting plate 507, and the waist-shaped hole is connected by a pin The nail is hung on the second mechanism plate. When the trip connecting plate 507 is lifted up, its upper end lifts one end of the tripping plate 501, driving the tripping plate 501 to rotate, so that the tripping shaft 503 rotates to the outer end of the semi-axis cutout facing the tripping limit arm 504. At this time, the limiting state of the tripping limit arm 504 is released, and the tripping is unlocked. After the tripping is unlocked, under the action of the restoring force of the tripping tension spring 502, the tripping limit arm 504 and the tripping linkage arm 505 rotate synchronously, driving the opening and closing main shaft 301 to reverse, thereby realizing the opening operation.

[0061] The mechanism body also includes a tripping limit mechanism, which includes a limit hook 508, a shaft weldment 509 and an electric mechanism drive shaft 510. The limit hook 508 is provided on the middle partition plate 102, and the shaft weldment 509 is provided on the opening and closing main shaft 301. The shaft weldment 509 is provided with an electric mechanism drive shaft 510, and a limit step is provided on the electric mechanism drive shaft 510. The electric mechanism drive shaft 510 cooperates with the limit hook 508 on the middle partition plate 102;

[0062] The electric mechanism driving shaft 510 is used as the limit shaft of the opening and closing main shaft 301 when the mechanism is not equipped with a motor. The opening and closing main shaft 301 rotates under the drive of external force, driving the tripping crank arm and the closing device to the required position. In order to prevent the tripping device from continuing to rotate and thus damaging the tripping plate 501, when the limit step reaches the limit hook 508, the limit hook 508 prevents the opening and closing main shaft 301 from continuing to rotate, thereby protecting the tripping crank arm from colliding with the tripping plate 501 and preventing damage to the tripping plate 501.

[0063] The main body of the mechanism also includes an indicating mechanism, which includes an indicating sign 601, a transmission rod 602, an indicating connecting rod 603, an indicating short connecting rod 604, an indicating long connecting rod 605 and an indicating rotating shaft 606. A clamping device is provided on the indicating rotating shaft 606, and the indicating rotating shaft 606 is movably connected to the rotating shaft of the load switch body through the clamping device. The indicating short connecting rod 604 is fixedly connected to the tail of the indicating rotating shaft 606. One end of the indicating long connecting rod 605 is rotatably connected to the indicating short connecting rod 604 through a pin shaft, and the other end is rotatably connected to the indicating connecting rod 603 through a pin shaft. The indicating connecting rod 603 is fixedly connected to one end of the transmission rod 602, and the other end of the transmission rod 602 is fixedly connected to the indicating sign 601. The operating mechanism drives the load switch body to rotate and drives the indicating shaft 606 at the same time. The indicating shaft 606 then drives the transmission rod 602 to rotate through the connecting rod transmission, thereby driving the indicating plate 601 fixedly installed at one end of the transmission rod 602 to rotate to indicate the correct main circuit opening and closing position of the switch and the correct position of the grounding circuit. Since the indicating driving force of this structure comes from the rotation of the main shaft of the load switch body, compared with the original structure, only one set of indicating devices is used to solve the opening and closing indication of the main circuit and the grounding circuit. At the same time, compared with the original structure, there is no situation where the indication is not in place. The indicating driving force of the original structure is not taken from the load switch body. When the opening and closing indication is in place, the actual opening operation of the load switch is not in place or there is no opening and closing at all. This structure completely avoids this situation.

[0064] Preferably, the indicating shaft 606 is disposed at the center of the second frame plate 103 .

[0065] Preferably, the load switch body refers to the load switch body to which the operating mechanism is connected, and the rotating shaft of the load switch body is connected to the indicating rotating shaft 606 .

[0066] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An operating mechanism for an inflatable cabinet load switch, characterized in that: It includes a frame, a mechanism body part and a mechanism interlocking part, the frame includes a first frame plate, a middle partition plate and a second frame plate, the first frame plate and the second frame plate are fixedly connected by pillars, and the middle partition plate is fixedly connected to the second frame plate by a column; The interlocking part of the mechanism is composed of an interlocking plate weldment, a padlock slide, an interlocking plate body and a padlock bracket. The interlocking plate body is fixedly mounted on the front plate of the mechanism, the padlock slide is fixedly mounted on the interlocking plate weldment, the padlock bracket is fixedly mounted on the surface of the front panel of the cabinet, the padlock slide is provided with a padlock hole, and the padlock bracket is provided with three position locking holes; The main body of the mechanism includes an opening and closing switch operating device, an earthing switch operating device, a spring energy storage device, an opening tripping device and a tripping limit mechanism. The opening and closing switch operating device includes an opening and closing main shaft and an opening and closing crank arm. The opening and closing main shaft is rotatably matched with the first frame plate through a shaft sleeve, and its outer end extends out of the first frame plate. The opening and closing crank arm is connected to the opening and closing main shaft. A plurality of groups of linkage combined micro switches are arranged on the second frame plate on one side of the opening and closing crank arm. The grounding switch operating device comprises a grounding switch operating shaft and a grounding crank arm, the grounding switch operating shaft is sleeved with the grounding crank arm, the grounding switch operating shaft is rotatably matched with the first frame plate through a shaft sleeve, the outer end of the grounding switch operating shaft extends out of the first frame plate, and an independent micro switch is provided on the second frame plate on one side of the grounding crank arm; A spring energy storage device is provided between the earthing switch operating device and the opening and closing switch operating device; The opening tripping device comprises a tripping plate, a tripping tension spring, a tripping shaft, a tripping limit crank arm and a tripping linkage crank arm, the tripping shaft is rotatably mounted on the first frame plate through the tripping plate, the tripping limit crank arm and the tripping linkage crank arm are fixedly connected together and rotatably mounted on the opening and closing main shaft, a tripping pin is provided between the tripping limit crank arm and the tripping linkage crank arm, one end of the tripping tension spring is rotatably hung on the tripping pin, and the other end is rotatably mounted on the first frame plate through a pin, the tripping linkage crank arm can be linked with the opening and closing main shaft to store energy or drive the opening and closing main shaft to reverse when the stored energy is released, the opening tripping device also comprises a tripping energy storage holding device, the tripping energy storage holding device comprises a semi-axle cutout arranged on the tripping shaft and matched with the outer end of the tripping limit crank arm and a reset torsion spring sleeved on the tripping shaft, one end of the reset torsion spring is hung on the tripping shaft, and the other end is fixed on the tripping plate; The tripping limit mechanism includes a limit hook, a shaft weldment and an electric mechanism drive shaft. The middle partition is provided with a limit hook, the opening and closing main shaft is provided with a shaft weldment, the electric mechanism drive shaft is provided on the shaft weldment, and the electric mechanism drive shaft is provided with a limit step. The electric mechanism drive shaft cooperates with the limit hook on the middle partition; The mechanism body part also includes an indicating mechanism, which includes an indicating plate, a transmission rod, an indicating connecting rod, an indicating short connecting rod, an indicating long connecting rod and an indicating rotating shaft. A clamping device is provided on the indicating rotating shaft, and the indicating rotating shaft is movably connected to the rotating shaft of the load switch body through the clamping device. The indicating short connecting rod is fixedly connected to the tail of the indicating rotating shaft. One end of the indicating long connecting rod is rotatably connected to the indicating short connecting rod through a pin shaft, and the other end is rotatably connected to the indicating connecting rod through a pin shaft. The indicating connecting rod is fixedly connected to one end of the transmission rod, and the other end of the transmission rod is fixedly connected to the indicating plate; The separation and combination crank arm and the ground crank arm are both provided with output pin shafts, and the second frame plate is provided with an arc output groove which is in clearance fit with the output pin shaft.

2. The operating mechanism for a load switch of an inflatable cabinet according to claim 1, characterized in that: The interlocking part of the mechanism also includes a lower door interlocking mechanism, which completes the lower door interlocking of the switch cabinet through the cooperation of the lower door interlocking plate and the lever in cooperation with the cam sleeve; the cam sleeve is placed on the first frame plate and fixedly installed on the opening and closing main shaft, and the lower door interlocking plate and the lever are connected to the first frame plate through a pin shaft.

3. The operating mechanism for a load switch of an inflatable cabinet according to claim 1, characterized in that: A protective plate is arranged on the padlock slide plate.

4. The operating mechanism for a load switch of an inflatable cabinet according to claim 1, characterized in that: The spring energy storage device includes a compression spring, a first compression spring head, a second compression spring head, a first spring crank arm and a second spring crank arm. The opening and closing main shaft is provided with a first spring crank arm, and the earthing switch operating shaft is provided with a second spring crank arm. The first compression spring head and the second compression spring head are connected by a telescopic connecting rod. The compression spring is sleeved on the telescopic connecting rod. The first compression spring head is hinged to the second spring crank arm on the earthing switch operating shaft through a pin shaft, and the second compression spring head is hinged to the first spring crank arm on the opening and closing main shaft through a pin shaft.

5. The operating mechanism for a load switch of an inflatable cabinet according to claim 4, characterized in that: The telescopic connecting rods are two sleeve-connected pipes with clearance fit.

6. The operating mechanism for a load switch of an inflatable cabinet according to claim 1, characterized in that: The indicating rotating shaft is arranged at the center of the second frame plate.

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