CN107293983B - Chassis interlocking device - Google Patents
Chassis interlocking device Download PDFInfo
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- CN107293983B CN107293983B CN201610202264.4A CN201610202264A CN107293983B CN 107293983 B CN107293983 B CN 107293983B CN 201610202264 A CN201610202264 A CN 201610202264A CN 107293983 B CN107293983 B CN 107293983B
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- plate
- limiting
- interlocking
- chassis
- bending
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
Abstract
The invention relates to a chassis truck interlocking device, which comprises a side plate (3), an interlocking plate (13), a connecting bent plate capable of reciprocating motion, an elastic mechanism (6), a rotatable limiting plate (5), a limiting block (4) and a closing buckle plate (2), wherein the side plate (3) is arranged on a chassis truck, one end of the connecting bent plate is connected with the interlocking plate (13), the interlocking plate (13) is driven to reciprocate, the other end of the connecting bent plate drives the limiting plate (5) to rotate through the elastic mechanism (6), the limiting block (4) limits the rotation of the limiting plate (5), and when the limiting plate (5) rotates to a limiting position, the closing buckle plate (2) is limited, so that the closing buckle plate (2) cannot reach the closing position. Compared with the prior art, the invention has the advantages of high interlocking reliability, good universality, adaptability to different strokes and the like.
Description
Technical Field
The invention relates to a handcart type vacuum circuit breaker, in particular to a chassis interlocking device of the handcart type vacuum circuit breaker.
Background
In order to ensure safe operation of the circuit breaker, i.e. to ensure that the handcart type vacuum circuit breaker cannot be switched on during the movement from the working position to the test position or vice versa, it is necessary to provide mechanical interlocking means at the operating mechanism of the circuit breaker in addition to the electrical locking. The principle of mechanical interlocking is that the circuit breaker can not be switched on by limiting a switching-on buckle plate of the circuit breaker in the moving process from a working position to a test position or from the test position to the working position. However, the mechanical interlocking device of the chassis truck in the prior art can only match with a specific rotating stroke of the chassis truck, and the chassis trucks with different strokes correspond to different interlocking devices, so that the chassis truck has no universality and increases the production cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the chassis interlocking device which has high interlocking reliability and good universality and can adapt to different strokes.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a chassis car interlock, includes the curb plate, this curb plate setting is on the chassis car, but still including setting up interlock board, the connecting bent plate of reciprocating motion, elastic mechanism, rotatable limiting plate, stopper and the switching-on buckle on the curb plate, connecting bent plate one end be connected with the interlock board, reciprocating motion is driven down at the interlock board, the other end passes through elastic mechanism and drives the limiting plate and rotate, the stopper carry out spacingly to the rotation of limiting plate, when the limiting plate rotates to spacing position, carries out spacingly to the switching-on buckle, makes the switching-on buckle unable to arrive the switching-on position.
The elastic mechanism is a spring, one end of the spring is fixedly connected with the end part of the connecting bending plate, and the other end of the spring is fixedly connected with the limiting plate.
The elastic mechanism comprises a spring and a bending rod, the bending rod is arranged at the end part of the connecting bending plate and is composed of a rod part and a bending part, the limiting plate is provided with a hole, the rod part of the bending rod penetrates through the hole, the bending part is in matched limiting with the edge of the hole, the spring is sleeved on the rod part of the bending rod, and two ends of the spring are respectively in contact connection with the limiting plate and the connecting bending plate.
The device also comprises a reset tension spring for resetting the limiting plate, and two ends of the reset tension spring are respectively connected with the connecting bending plate and the side plate.
The connecting bending plate is provided with a plurality of oblong holes, guide pins are inserted in the oblong holes, the guide pins are fixed on the side plates, and the oblong holes are in sliding connection with the guide pins.
The oblong hole is an oblong hole with adjustable length.
The device also comprises a chassis moving assembly, wherein the chassis moving assembly comprises a connecting block and a screw rod, the connecting block is positioned at one side of the chassis, and the screw rod penetrates through the chassis and the connecting block and is linked with the connecting block; the interlocking plate drives the connecting bent plate to reciprocate through the interlocking plate rotating assembly, the interlocking plate rotating assembly comprises a shaft body, a connecting plate and a torsion spring, the shaft body is fixed on the chassis, the shaft body is parallel to the screw rod, the connecting plate is in linkage with the connecting block in the same direction, the interlocking plate is rotatably sleeved on the shaft body and is provided with a first free end and a second free end, the first free end is hinged with the connecting bent plate, the second free end is in tight contact with a positioning surface of the connecting plate through the torsion spring sleeved on the shaft body, and protrusions corresponding to test positions and working positions are arranged on the positioning surface.
The connecting plate comprises two wide bodies and a narrow body positioned between the two wide bodies, wherein the two wide bodies respectively form bulges corresponding to the test position and the working position, and a transition circular arc groove is formed at the joint of the wide bodies and the narrow body.
The transition circular arc groove is arranged at the joint of the wide body and the narrow body, so that the second free end of the interlocking plate can be transited to the position of the wide body through the circular arc groove, and the circular arc groove plays roles in preventing operation from being blocked and smoothly buffering transition.
The connecting plate realizes the same-direction linkage with the connecting block through the conical pin and the support, the conical pin penetrates through the connecting plate, two ends of the conical pin are fixed on the connecting block, one surface, corresponding to the positioning surface, on the connecting plate is a limiting surface, the bottom of the support (24) is fixed on the chassis, and the support is in sliding connection with the limiting surface of the connecting plate.
The taper pin enables the connecting plate not to move up and down in the direction perpendicular to the taper pin, the connecting plate and the connecting block can be in same-direction linkage, the second free end of the connecting plate is propped against the locating surface of the connecting plate through the support and the limiting surface sliding connection of the connecting plate, and therefore when the device is in a locking state, the second free end of the connecting plate and the support are propped against the locating surface and the limiting surface of the narrow body respectively, and when the device is in an unlocking state, the second free end of the connecting plate and the support are transited to be propped against the locating surface and the limiting surface of the corresponding wide body on the connecting plate respectively.
The two ends of the torsion spring are respectively connected with the groove and the interlocking plate which are arranged at the top of the support.
The working principle of the invention is as follows: the side plate is arranged on the chassis truck, the chassis truck is driven to move through the rotation of the screw rod, in the moving process, the chassis truck and the connecting block generate relative motion, the handcart type vacuum circuit breaker moves from the working position to the test position or from the test position to the working position, the second free end of the interlocking plate moves from the wide body to the narrow body and slides along the surface of the narrow body, in the process that the second free end of the interlocking plate moves from the wide body to the narrow body, the interlocking plate rotates around the shaft body under the action of the torsion spring to drive the connecting bent plate to move, and the connecting bent plate drives the limiting plate to rotate to the limiting position through the compression counterforce of the elastic mechanism to limit the closing buckle plate, so that the closing buckle plate cannot reach the closing position, and the mechanical interlocking effect is achieved. Because the connecting bent plate and the limiting plate are telescopic elastic mechanisms, when the connecting bent plate moves beyond the stroke, the elastic mechanisms can continue to compress, so that the connecting bent plate can continue to move, and the limiting plate can still be kept at the limiting position. When the chassis car is in working position or test position, the second free end and the broad body in close contact that corresponds of interlocking board, the in-process that the second free end of interlocking board removed to the broad body from the narrow body, under the extrusion effect in the circular arc groove of linking the board, the interlocking board rotates to reset, drive and connect the bent plate downward movement and reset, the reset that connects the bent plate makes elastic mechanism's compression counter force disappear, and then drive the limiting plate rotation and leave spacing position, release the spacing to the switching-on buckle, the switching-on buckle can normally be closed on this moment, when having realized the chassis car in working position or test position, the state that the circuit breaker allowed to be closed.
Compared with the prior art, the invention has the following advantages:
(1) The universality is strong, and the overtravel requirement can be met. According to the invention, the limiting plate is driven to rotate through the elastic mechanism, so that the limiting plate can prop against the closing pinch plate to enable the closing pinch plate not to reach the closing position when rotating to the limiting position, and mechanical interlocking is realized. The rotation strokes of different chassis carts are different, so that the rotation of the interlocking plate is driven to have certain deviation, and the elastic mechanism can meet the requirements of the rotation strokes of the interlocking plates of different chassis carts, thereby increasing the universality.
When the elastic mechanism is a spring, the handcart type vacuum circuit breaker moves from the working position to the test position or from the test position to the working position, the second free end of the interlocking plate moves from the wide body to the narrow body and slides along the narrow body, and the second free end of the interlocking plate rotates around the shaft body under the action of the torsion spring in the process of moving from the wide body to the narrow body, so that the connecting bending plate is driven to move, the connecting bending plate drives the limiting plate to rotate to the limiting position through the compression counterforce of the spring, and when the chassis vehicle rotation stroke is enlarged, the connecting bending plate can also continue to move to further compress the spring, so that the limiting plate is kept at the normal limiting position. When the chassis truck is in a working position or a test position, the connecting bending plate resets to enable compression counterforce of the spring to disappear, and the spring drives the limiting plate to rotate away from the limiting position due to the fact that the spring is fixedly connected with the limiting plate and the connecting bending plate and continuously resets.
When spring mechanism is spring and bending rod, the spring housing is established on the pole portion of bending rod, and the pole portion of bending rod plays the guide effect to the compression direction of spring, and the bending part of bending rod is spacing through hooking the limiting plate, cooperates with the hole edge of limiting plate spacing, and the both ends of spring are supported respectively and are realized the contact connection on limiting plate and connection bent plate, and the contact department also can set up the packing ring. The handcart type vacuum circuit breaker is in the removal in-process from working position to test position or from test position to working position, the second free end of interlocking board removes to the narrow body from the broad body, and slide along the narrow body, the in-process that the second free end of interlocking board removed to the narrow body from the broad body, the interlocking board rotates around the axis body under the effect of torsional spring, thereby drive the motion of connecting the bent plate, the compression counter-force that connects the bent plate through the spring drives the limiting plate and rotates to spacing position, when chassis car rotation stroke grow, the bending rod that passes the limiting plate hole has the space of motion, the hole through the limiting plate continues to move, make connecting the bent plate also can continue to move, further compression spring, make the limiting plate keep at normal limiting position. When the chassis truck is in a working position or a test position, the bending plate is reset to enable compression counterforce of the spring to disappear, so that force between the limiting plate and the limiting block is reduced, and the limiting plate cannot be driven to rotate due to the fact that the spring is in contact connection with the limiting plate, but the limiting plate is hooked by the bending part of the bending rod, so that the limiting plate can rotate away from the limiting position.
(2) The design of the over-travel movement distance of the connecting bent plate ensures that even if the rotation travel of the chassis truck is large, the connecting bent plate can continue to move for a sufficient distance to enable the limiting plate to rotate to the limiting position, so that the interlocking reliability is ensured; meanwhile, the moving distance of the connecting bending plate can be adjusted by adjusting the length of the oblong hole.
(3) The elastic mechanism is arranged to drive the limiting plate to rotate, so that the requirement on processing precision of the device is reduced, economic benefit is improved, and the device is suitable for large-scale industrial production.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in an interlocked and locked state;
FIG. 2 is a schematic illustration of the mechanism of the present invention in an interlocked unlocked state;
FIG. 3 is a schematic view of a partial structure of a connecting bent plate according to the present invention;
FIG. 4 is a schematic view of the elastic mechanism of the present invention;
FIG. 5 is a schematic view of the interlock plate rotating assembly of the present invention;
FIG. 6 is a schematic view of the mounting location of the stand of the present invention;
FIG. 7 is a schematic view of the mounting location of the torsion spring of the present invention;
FIG. 8 is a schematic view of a connecting plate according to the present invention;
fig. 9 is a schematic structural view of the present invention applied to a cart type vacuum circuit breaker;
in the figure, 1 is a closing coil, 2 is a closing buckle plate, 3 is a side plate, 4 is a limit block, 5 is a limit plate, 6 is a spring mechanism, 61 is a spring, 62 is a rod part, 63 is a bending part, 7 is a reset tension spring, 8 is a first bending plate, 9 is a second bending plate, 10 is a first screw, 11 is a connecting plate, 12 is a second screw, 13 is a interlocking plate, 131 is a first free end, 132 is a second free end, 14 is a gasket, 15 is a hole, 16 is a guide pin, 17 is a slotted hole, 18 is a connecting block, 19 is a screw rod, 20 is a shaft body, 21 is a connecting plate, 211 is a narrow body, 212 is a wide body, 213 is a transition circular arc groove, 22 is a torsion spring, 23 is a conical pin, 24 is a support, and 25 is a chassis.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Example 1
The utility model provides a chassis car interlock, as shown in fig. 1 ~ 4, including curb plate 3, this curb plate 3 sets up on chassis car (25), but still including setting up interlocking plate 13 on the curb plate, connecting the bent plate of reciprocating motion, elastic mechanism 6, rotatable limiting plate 5, stopper 4 and closing buckle 2, connecting bent plate one end and interlocking plate 13 are connected, the other end passes through elastic mechanism 6 and drives limiting plate 5 rotation, stopper 4 carries out spacingly to the rotation of limiting plate 5, when limiting plate 5 rotates to spacing position, carry out spacingly to closing buckle 2, make closing buckle 2 unable to reach the closing position. The elastic mechanism 6 comprises a spring 61 and a bending rod, the bending rod is arranged at the end part of the connecting bending plate and is composed of a rod part 62 of the bending rod and a bending part 63 of the bending rod, the limiting plate 5 is provided with a hole 15, the rod part 62 of the bending rod penetrates through the hole 15, the bending part 63 of the bending rod is matched with the hole 15 to limit, the limiting plate 5 is hooked, the spring 61 is sleeved on the rod part 62 of the bending rod, and two ends of the spring are respectively in contact connection with the limiting plate 5 and the connecting bending plate. A plurality of oblong holes 17 with the lengths adjustable according to the needs are arranged on the connecting bending plate, guide pins 16 are inserted into the oblong holes 17, and the oblong holes 17 are in sliding connection with the guide pins 16. The device also comprises a reset tension spring 7, one end of the reset tension spring 7 is connected with the connecting bending plate, and the other end is connected with the side plate 3 through a guide pin 16.
The device also comprises a chassis moving assembly, as shown in fig. 5-7, wherein the chassis moving assembly comprises a connecting block 18 and a screw rod 19, the connecting block 18 is positioned on one side of the chassis, and the screw rod 19 passes through the chassis 25 and the connecting block 18 and is linked with the connecting block 18; the interlocking plate 13 drives the connecting bent plate to reciprocate through the interlocking plate rotating assembly, the interlocking plate rotating assembly comprises a shaft body 20, a connecting plate 21 and a torsion spring 22, the shaft body 20 is fixed on a chassis truck 25 and is parallel to a screw rod 19, the connecting plate 21 realizes the same-direction linkage with a connecting block 18 through a taper pin 23 and a support 24 for limiting the side face of the connecting plate 21, the taper pin 23 penetrates through the connecting plate 21, two ends of the connecting plate are fixed on the connecting block 23, the bottom of the support 24 is fixed on the chassis truck, and two ends of the torsion spring 22 are respectively connected with the interlocking plate 13 and grooves formed in the top of the support 24. The rotatable cover of interlocking plate 13 is established on axis body 20, is equipped with first free end 131 and second free end 132, and first free end 131 is articulated with the connection bent plate, and second free end 132 is through the torsional spring 22 of cover on axis body 20 and the locating surface in close contact with of linking plate 21, and the one side that corresponds with the locating surface on the linking plate 21 is spacing face, and support 24 and the spacing face sliding connection of linking plate 21. The positioning surface of the connecting plate 21 comprises two wide bodies 212 and a narrow body 211 positioned between the two wide bodies 212, the two wide bodies 212 respectively form bulges corresponding to the test position and the working position, and a transitional circular arc groove 213 is formed at the joint of the wide bodies 212 and the narrow body 211, as shown in fig. 8.
Specifically:
the connecting bending plate is composed of a first bending plate 8, a second bending plate 9 and a connecting plate 11 which are sequentially connected, an interlocking plate 13 of the chassis is connected with the connecting plate 11 through a second screw 12, and the connecting plate 11 is connected with the bending plate 9 through a first screw 10. As shown in fig. 3, the first bending plate 8 and the second bending plate 9 are provided with oblong holes 17, and are slidably fixed on the side plate 3 by guide pins 16 penetrating through the oblong holes 17, wherein the outer end of one guide pin 16 is limited by a clamp spring and a retainer ring, and the guide pin 16 is provided with a groove, so that one end of a reset tension spring 7 is hooked in the groove, and the other end is hooked in a small hole at the upper end of the first bending plate 8. As shown in fig. 3, washers 16 are mounted at two ends of the spring 61 and penetrate into a bending rod portion 62 at the upper end of the first bending plate 8, and the bending rod bending portion 63 extends into the hole 15 of the limiting plate 5 to move up and down; the limiting plate 5 is rotatably fixed to the side plate 3. When the chassis 25 moves from the working position to the testing position or from the testing position to the working position, the second free end 132 of the interlocking plate 13 moves from the wide body 212 to the narrow body 211 and slides along the narrow body 211, and in the process that the second free end 132 of the interlocking plate 13 moves from the wide body 212 to the narrow body 211, the interlocking plate 13 rotates around the shaft body 20 under the action of the torsion spring 22 to drive the connecting plate 11 to move upwards, the connecting plate 11 drives the second bending plate 9 to move upwards and then drives the first bending plate 8 to move upwards, and the first bending plate 8 drives the limiting plate 5 to rotate upwards anticlockwise through the compression reaction force of the spring 61. When limiting plate 5 is spacing by stopper 4, whole interlocking is in the pinning state, as shown in fig. 1, no matter switch-on coil 1 tries manual or electronic combined floodgate, switch-on buckle 2 can both be blocked by limiting plate 5 and can't reach the combined floodgate position to make chassis 25 in the intermediate position, the circuit breaker can't carry out the combined floodgate operation.
Because the rotational travel of different chassis trucks 25 is different, there is also a certain deviation in the range of motion of the drive linkage plate 13, so the design of the connecting bending plate in the chassis truck interlocking device needs to ensure an over travel distance. When the interlocking plate 13 drives the connecting bending plate to move upwards, the connecting bending plate drives the limiting plate 5 to rotate upwards anticlockwise through the compression counterforce of the spring 61 until the limiting plate 5 is limited by the limiting block 4, the whole interlocking is in a locking state, and at the moment, the bending plate 8 can still move upwards continuously, as shown in fig. 3 and 4.
Similarly, when the chassis is in the working position or the test position, the interlocking plate 13 of the chassis rotates and drives the connecting plate 11 to move downwards, the connecting plate 11 drives the second bending plate 9 to move downwards, the second bending plate 9 drives the first bending plate 8 to move downwards, the connecting bending plate of the reset tension spring 7 is reset, meanwhile, the bending rod bending part 63 hooks and drives the limiting plate 5 to rotate clockwise, and at the moment, if the closing coil 1 is attempted to be pressed, the closing buckle plate 2 can not be propped against by the limiting plate 5 any more, and normal closing can be realized. When the chassis is in the working position or the test position, the circuit breaker is in a state allowing closing, as shown in fig. 2.
When the device is applied to a handcart type vacuum circuit breaker, as shown in fig. 9, the device can cooperate with an electric locking device arranged on the circuit breaker to play a better locking role.
Example 2
The chassis interlocking device of this embodiment is basically the same as embodiment 1, except that the elastic mechanism 6 of this embodiment is a spring, the spring is fixedly connected with the limiting plate 5 and the connecting bent plate, the second free end 132 of the interlocking plate 13 moves from the wide body 212 to the narrow body 211 and slides along the narrow body 211 in the process of moving from the working position to the testing position or from the testing position to the working position, the second free end 132 of the interlocking plate 13 rotates around the shaft body 20 under the action of the torsion spring 22 in the process of moving from the wide body 212 to the narrow body 211, the connecting bent plate is driven to move upwards, the connecting bent plate drives the limiting plate 5 to rotate anticlockwise to the limiting position through the compression reaction force of the spring, and when the rotational stroke of the chassis 25 becomes large, the connecting bent plate can continue to move upwards, and the spring is further compressed, so that the limiting plate 5 is kept at the normal limiting position. When the chassis 25 is in the working position or the test position, the connecting bending plate resets to enable the compression counterforce of the spring to disappear, and the spring drives the limiting plate 5 to rotate clockwise to leave the limiting position due to the fact that the spring is fixedly connected with the limiting plate 5 and the connecting bending plate and continuously resets.
Example 3
The present embodiment is basically the same as embodiment 1, except that the connecting plate 21 and the connecting block 18 of the present embodiment are directly and fixedly connected together to realize the same-direction linkage with the connecting block 18. This is a simpler construction.
Claims (6)
1. The chassis truck interlocking device comprises a side plate (3), wherein the side plate (3) is arranged on a chassis truck (25), and is characterized by further comprising an interlocking plate (13), a connecting bent plate capable of reciprocating motion, an elastic mechanism (6), a rotatable limiting plate (5), a limiting block (4) and a closing buckle plate (2) which are arranged on the side plate (3), one end of the connecting bent plate is connected with the interlocking plate (13), the interlocking plate (13) is driven to reciprocate, the other end of the connecting bent plate drives the limiting plate (5) to rotate through the elastic mechanism (6), the limiting block (4) limits the rotation of the limiting plate (5), and when the limiting plate (5) rotates to a limiting position, the closing buckle plate (2) is limited, so that the closing buckle plate (2) cannot reach the closing position;
the elastic mechanism (6) comprises a spring (61) and a bending rod, the bending rod is arranged at the end part of the connecting bending plate and consists of a rod part (62) and a bending part (63), the limiting plate (5) is provided with a hole (15), the rod part (62) of the bending rod penetrates through the hole (15), the bending part (63) is in fit limit with the edge of the hole (15), the spring (61) is sleeved on the rod part (62) of the bending rod, and the two ends of the spring are respectively in contact connection with the limiting plate (5) and the connecting bending plate;
the device also comprises a chassis moving assembly, wherein the chassis moving assembly comprises a connecting block (18) and a screw rod (19), the connecting block (18) is positioned on one side of the chassis (25), and the screw rod (19) penetrates through the chassis (25) and the connecting block (18) and is linked with the connecting block (18); interlocking board (13) drive through interlocking board rotating assembly and connect the bent plate and do reciprocating motion, interlocking board rotating assembly include axis body (20), link board (21) and torsional spring (22), axis body (20) are fixed on the chassis car, parallel with lead screw (19), link board (21) and connecting block (18) syntropy linkage, interlocking board (13) rotatable cover is established on axis body (20), be equipped with first free end (131) and second free end (132), first free end (131) are articulated with connecting the bent plate, second free end (132) establish torsional spring (22) and the locating surface in close contact with of link board (21) on axis body (20) through the cover, be equipped with the arch that corresponds test position and working position respectively on the locating surface.
2. Chassis truck interlock according to claim 1, characterized in that the device further comprises a return tension spring (7) for resetting the limiting plate, both ends of the return tension spring (7) being connected to the connecting bending plate and the side plate (3), respectively.
3. The chassis truck interlocking device according to claim 1, wherein a plurality of oblong holes (17) are formed in the connecting bent plate, guide pins (16) are inserted into the oblong holes (17), the guide pins (16) are fixed on the side plates (3), and the oblong holes (17) are in sliding connection with the guide pins (16).
4. The chassis truck interlocking device according to claim 1, wherein the connecting plate comprises two wide bodies (212) and a narrow body (211) positioned between the two wide bodies (212), the two wide bodies (212) respectively form a bulge corresponding to the test position and the working position, and a transitional circular arc groove (213) is formed at the joint of the wide body (212) and the narrow body (211).
5. The chassis truck interlocking device according to claim 1, wherein the connecting plate (21) realizes the same-direction linkage with the connecting block (18) through a taper pin (23) and a support (24) for limiting the side surface of the connecting plate (21), the taper pin (23) penetrates through the connecting plate (21), two ends of the taper pin are fixed on the connecting block (18), one surface of the connecting plate (21) corresponding to the positioning surface is a limiting surface, the bottom of the support (24) is fixed on the chassis truck (25), and the support (24) is in sliding connection with the limiting surface of the connecting plate (21).
6. The chassis truck interlock according to claim 5, wherein both ends of the torsion spring (22) are respectively connected with a groove and an interlock plate (13) provided at the top of the support (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202264.4A CN107293983B (en) | 2016-04-01 | 2016-04-01 | Chassis interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202264.4A CN107293983B (en) | 2016-04-01 | 2016-04-01 | Chassis interlocking device |
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| Publication Number | Publication Date |
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| CN107293983A CN107293983A (en) | 2017-10-24 |
| CN107293983B true CN107293983B (en) | 2023-05-26 |
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| CN201610202264.4A Active CN107293983B (en) | 2016-04-01 | 2016-04-01 | Chassis interlocking device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266572Y (en) * | 2008-09-24 | 2009-07-01 | 常熟开关制造有限公司(原常熟开关厂） | Interlocking device of cart type high-voltage vacuum breaker |
| CN203721600U (en) * | 2014-01-10 | 2014-07-16 | 宁波舜利高压开关科技有限公司 | Operation mechanism chassis vehicle interlocking device |
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| CN107293983A (en) | 2017-10-24 |
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