CN109217159B - Interlocking device of handcart circuit breaker - Google Patents
Interlocking device of handcart circuit breaker Download PDFInfo
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- CN109217159B CN109217159B CN201811244056.6A CN201811244056A CN109217159B CN 109217159 B CN109217159 B CN 109217159B CN 201811244056 A CN201811244056 A CN 201811244056A CN 109217159 B CN109217159 B CN 109217159B
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- interlocking
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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 discloses an interlocking device of a handcart circuit breaker, which comprises a fixed rocker arm supporting seat, a fixed rocker arm supporting seat and a fixed rocker arm supporting seat, wherein the fixed rocker arm supporting seat is used for being fixed on a frame of a handcart; the interlocking fixed shaft is rotatably arranged on the fixed rocker arm supporting seat; the crank arm head is rotatably arranged on the fixed rocker arm supporting seat, coaxially rotates with the interlocking fixed shaft and is used for interlocking with a frame of the handcart; the rocking interlocking part is used for driving the crank arm head to unlock the frame; the brake separating interlocking connecting lever is provided with a brake closing position and a brake separating position, wherein the brake separating interlocking connecting lever locks the shaking interlocking part at the brake closing position, and the brake separating interlocking connecting lever unlocks the shaking interlocking part at the brake separating position; and a swing-in mechanism return spring for providing an elastic force for returning the swing-in interlocking portion. The opening interlocking connecting lever and the shaking-in interlocking part are mechanically interlocked, so that the handcart can be pushed and pulled only after the breaker is opened, the handcart is prevented from being pushed and pulled by mistake when the breaker is closed, and potential safety hazards are eliminated.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to an interlocking device of a handcart circuit breaker.
Background
The traditional floor type handcart circuit breaker adopting electrical interlocking still has the possibility that the handcart is pushed and pulled in a closing state, the reliability of interlocking is poor, and potential safety hazards exist.
Disclosure of Invention
Therefore, in order to solve the problem of poor interlocking reliability of the handcart circuit breaker, the interlocking device of the handcart circuit breaker needs to be provided.
An interlocking device of a handcart circuit breaker comprises a fixed rocker arm supporting seat, a fixed rocker arm supporting seat and a fixed rocker arm supporting seat, wherein the fixed rocker arm supporting seat is used for being fixed on a frame of a handcart; the interlocking fixed shaft is rotatably arranged on the fixed rocker arm supporting seat; the crank arm head is rotatably arranged on the fixed rocker arm supporting seat, coaxially rotates with the interlocking fixed shaft and is used for interlocking with a frame of the handcart; the rocking interlocking part is used for driving the crank arm head to unlock the frame; the brake separating interlocking connecting lever is provided with a brake closing position and a brake separating position, wherein the brake separating interlocking connecting lever locks the shaking interlocking part at the brake closing position, and the brake separating interlocking connecting lever unlocks the shaking interlocking part at the brake separating position; and a swing-in mechanism return spring for providing an elastic force for returning the swing-in interlocking portion.
According to the interlocking device of the handcart circuit breaker, the opening interlocking connecting lever and the shaking-in interlocking part are mechanically interlocked, so that the handcart can be pushed and pulled only after the circuit breaker is opened, the phenomenon that the handcart is pushed and pulled by mistake when the circuit breaker is closed is avoided, and potential safety hazards are eliminated.
In one embodiment, the handcart locking device further comprises an operation panel which is used for being fixed on a frame of the handcart and is provided with a first arc-shaped channel, a second arc-shaped channel and a third channel, and the second arc-shaped channel and the third channel are communicated in the axial direction of the interlocking fixing shaft;
the shaking interlocking part comprises a shaking sleeve which is sleeved on the interlocking fixing shaft in an axially movable manner, the shaking sleeve is provided with a shaking interlocking pin shaft and a shaking interlocking shaft sleeve, and the shaking interlocking shaft sleeve moves in a second arc-shaped channel and a third channel;
the shaking-in mechanism return spring is arranged between the interlocking fixed shaft and the shaking-in sleeve and used for providing elastic force for keeping the shaking-in interlocking shaft sleeve in the third channel, and the shaking-in interlocking shaft sleeve can move from the third channel to the second channel when overcoming the elastic force;
the brake separating interlocking crank arm comprises a hand separating sleeve which is rotatably sleeved on the interlocking fixed shaft, a hand separating interlocking guide plate connected with the hand separating sleeve, a brake separating interlocking sleeve moving in a first arc-shaped channel and an interlocking lock plate, wherein a limit groove is formed in the interlocking lock plate along the circumferential direction of the interlocking fixed shaft, and the hand separating sleeve is provided with different working positions at which the limit groove is matched with or separated from the shaking interlocking pin shaft;
the crank arm head comprises a fixed rocker arm supporting seat and a crank arm fixed rotating shaft which is coaxially rotated with the interlocking fixed shaft, and the crank arm fixed rotating shaft is connected with a crank arm guide sleeve which is used for being interlocked with a frame of a handcart.
In one embodiment, the operation panel includes an arc plate, the arc plate includes a first arc plate and a second arc plate that are arranged side by side along an axial direction of the interlocking fixing shaft, the first arc channel is provided on the first arc plate, the second arc channel and the third channel are provided on the second arc plate, the operation panel further includes a first baffle fixed on the first arc plate, a second baffle fixed on the first arc plate and/or the second arc plate, and a third baffle fixed on the second arc plate, wherein in the axial direction of the interlocking fixing shaft, the first baffle and the second baffle are respectively located on two sides of the first arc channel, and the second baffle and the third baffle are located on two sides of the second arc channel and on two sides of the third channel.
In one embodiment, the operating panel further comprises an upper baffle plate, a lower baffle plate and a side baffle plate, wherein the upper baffle plate and the lower baffle plate are fixed on the second arc-shaped plate and located between the third baffle plate and the second baffle plate, and the side baffle plates are respectively located at two ends of the second arc-shaped channel along the circumferential direction of the interlocking fixing shaft; the side baffle comprises a first blocking part extending along the circumferential direction of the interlocking fixing shaft and a second blocking part extending along the axial direction of the interlocking fixing shaft, the first blocking part is positioned on one side, far away from the third baffle, of the second arc-shaped channel, and the lower baffle extends to one side, far away from the upper baffle, of the third channel.
In one embodiment, the opening interlocking connecting lever further comprises an opening interlocking shaking-in sleeve connected with the hand opening sleeve, an opening is formed in one end of the opening interlocking shaking-in sleeve, the opening interlocking sleeve extends into the opening, and an opening interlocking pressure spring is further arranged between the opening interlocking sleeve and the bottom wall of the opening.
In one embodiment, the interlocking fixed shaft is a hollow shaft, an axial sliding groove which radially penetrates through the interlocking fixed shaft is formed in the interlocking fixed shaft, the reset spring of the rock-in mechanism is placed in the interlocking fixed shaft along the axial direction of the interlocking fixed shaft, the interlocking device further comprises a fixed tension spring pin shaft and a fixed tension spring long shaft, the fixed tension spring pin shaft extends into the interlocking fixed shaft and is connected with the reset spring of the rock-in mechanism, and the fixed tension spring long shaft penetrates through the rock-in sleeve and extends into the axial sliding groove and is connected with the reset spring of the rock-in mechanism.
In one embodiment, the crank arm head further comprises a crank arm fixing plate which is connected with the crank arm fixing rotating shaft and the crank arm guide sleeve, the interlocking fixing shaft is located on one side of the fixed rocker arm supporting seat, the crank arm guide sleeve and the crank arm fixing plate are located on the other side of the rocker arm supporting seat, and the crank arm fixing rotating shaft penetrates through the fixed rocker arm supporting seat and extends into one end of the interlocking fixing shaft.
In one embodiment, the outer surface of the interlocking fixing shaft is provided with a plug welding hole, and the plug welding hole is internally provided with welding flux for connecting the crank arm fixing rotating shaft and the interlocking fixing shaft.
In one embodiment, the fixed rocker arm supporting seat comprises an upper supporting seat and a lower supporting seat which are spliced together, a supporting seat shaft sleeve is clamped between the upper supporting seat and the lower supporting seat, and the crank arm fixing rotating shaft is matched with the supporting seat shaft sleeve.
In one embodiment, the outer surface of the crank arm fixing rotating shaft is provided with a positioning ring at a position close to the interlocking fixing shaft.
Drawings
Fig. 1 is a schematic structural diagram of an interlocking device of a handcart circuit breaker in a switching-on state according to an embodiment of the invention;
FIG. 2 is a schematic front view of the interlock device of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic structural diagram of another view angle when the interlocking device of the handcart circuit breaker is in a closing state according to an embodiment of the invention;
fig. 5 is a schematic structural view of a fixed rocker arm support seat of an interlocking device of a handcart circuit breaker according to an embodiment of the invention;
fig. 6 and 7 are schematic structural diagrams of an operation panel of an interlocking device of a handcart circuit breaker according to an embodiment of the invention from different viewing angles;
fig. 8 is a schematic structural view of a fixed tension spring pin shaft of an interlocking device of a handcart circuit breaker according to an embodiment of the invention;
fig. 9 is a schematic structural view of a crank head of an interlock device of a handcart circuit breaker according to an embodiment of the invention;
fig. 10 is a schematic structural view of a fixed tension spring pin shaft of an interlocking device of a handcart circuit breaker according to an embodiment of the invention;
fig. 11 is an assembly schematic diagram of a switching-off interlocking crank arm head and a swing-in interlocking part of an interlocking device of a handcart circuit breaker according to an embodiment of the invention;
figure 12 is an exploded view of the assembly of figure 11; and
fig. 13 is a schematic structural view of a long shaft of a fixed tension spring of an interlocking device of a handcart circuit breaker according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The structure of the interlock device of the handcart circuit breaker of the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 4, an interlocking device of a handcart circuit breaker according to an embodiment of the present invention includes a fixed rocker arm supporting seat 10, an interlocking fixing shaft 20, a crank head 30, a switching-off interlocking crank arm 40, a swing-in interlocking portion 50, and a swing-in mechanism return spring 60.
In the interlocking device of the embodiment, the fixed rocker arm support base 10 is used for being fixed on a frame of a handcart and used as a support structure of the interlocking device. The fixed rocker arm supports 10 are typically arranged in pairs, with the interlock device being located between the two fixed rocker arm supports 10 except for the crank head 30.
The crank arm head 30 is used for interlocking with the frame of the handcart to realize the locking of the working position of the handcart. The rocker head 30 is rotatably mounted to the fixed rocker arm support base 10 and rotates coaxially with the interlocking fixed shaft 20. Therefore, the crank arm head 30 has different states relative to the fixed rocker arm support base 10, and the handcart working position can be locked and unlocked.
The opening interlocking lever 40 has an opening position and a closing position in which the state of the opening interlocking lever 40 with respect to the interlocking fixing shaft 20 is different, and the opening interlocking lever 40 can be operated to realize manual opening of the circuit breaker. Specifically, when the breaker is in the opening position, the opening interlocking connecting lever 40 can realize manual opening of the breaker, and when the breaker is in the closing position, the opening interlocking connecting lever 40 does not affect the closing state of the breaker. The swing-in interlocking part 50 can be operated to rotate and drive the crank arm head 30 to rotate, so that the crank arm head 30 releases the locking of the working position of the handcart. When the opening interlock lever 40 is in the closing position shown in fig. 1, the opening interlock lever 40 and the swing-in interlock portion 50 are still interlocked with each other. In other words, at this time, the swing-in interlocking section 50 is locked by the opening interlock lever 40, and the swing-in interlocking section 50 cannot be operated. Only after the switching-off interlocking crank arm 40 is operated to the switching-off position and the manual switching-off of the circuit breaker is realized, and the swinging interlocking part 50 is unlocked, the swinging interlocking part 50 can be continuously operated manually and drives the crank arm head 30 to unlock the working position of the handcart. The swing mechanism return spring 60 is used for providing elastic force for returning the swing interlocking part 50, is flexible in arrangement position, and can provide return force after external force on the swing interlocking part 50 is removed, so that mechanical interlocking with the opening interlocking connecting lever 40 can be realized again.
According to the embodiment of the invention, when the switching-off interlocking connecting lever 40 is in the switching-on position, the switching-off interlocking connecting lever 40 and the shaking-in interlocking part 50 are mechanically interlocked, so that the handcart can be pushed and pulled only after the circuit breaker is switched off, the handcart is prevented from being pushed and pulled by mistake when the circuit breaker is switched on, and the potential safety hazard is eliminated.
According to some embodiments of the present invention, an operator panel 70 is also included. An operating panel 70 is also fixed to the frame of the hand truck to cooperate with the opening interlock lever 40 and the swing-in interlock 50 to guide the operator to properly operate the opening interlock lever 40 and the swing-in interlock 50. The following detailed description is made with reference to the accompanying drawings.
Referring to fig. 1, 4, 6 and 7, the operation panel 70 has a first arc-shaped channel 701, a second arc-shaped channel 702 and a third channel 703, wherein the second arc-shaped channel 702 and the third channel 703 communicate in the axial direction of the interlocking fixing shaft 20.
Referring to fig. 1, 4, 11 and 12, the pan interlock 50 includes a pan sleeve 510 that is axially movable over the interlock stationary shaft 20. The swing sleeve 510 is provided with a swing interlocking pin shaft 520 and a swing interlocking bushing 530, wherein the swing interlocking bushing 530 can move in the second arc-shaped channel 702 and the third channel 703. The rocking-in interlocking pin shaft 520 is used for matching with the opening interlocking crank arm 40 to realize mechanical interlocking. A pan mechanism return spring 60 is disposed between interlock stationary shaft 20 and pan sleeve 510 to provide a spring force to retain pan interlock sleeve 530 in third channel 703 and a return force after travel. Thus, when the switching-off interlocking crank arm 40 unlocks the swing-in interlocking pin shaft 520, the swing-in interlocking shaft sleeve 530 is manually operated to axially move from the third channel 703 to the second arc-shaped channel 702 against the resistance of the return spring 60 of the swing-in mechanism, and then the swing-in interlocking shaft sleeve 530 can rotate around the axis of the interlocking fixed shaft 20 along the second arc-shaped channel 702, so as to drive the crank arm head 30 to rotate.
Referring to fig. 1, 4, 11 and 12, the opening interlocking lever 40 includes a hand opening sleeve 410 rotatably fitted on the interlocking fixing shaft 20, a hand opening interlocking guide plate 420 connected to the hand opening sleeve 410, an opening interlocking sleeve 430 moving in a first arc-shaped passage 701, and an interlocking lock plate 440, wherein the hand opening interlocking guide plate 420 is used to realize opening of the circuit breaker. The interlocking lock plate 440 is provided with a limit groove 442 along the circumferential direction of the interlocking fixing shaft 20, and the manual separating sleeve 430 has different working positions for matching or separating the limit groove 442 with or from the swing interlocking pin 520. In other words, when the hand sleeve 430 rotates with respect to the interlocking fixing shaft 20, the hand interlocking guide plate 420 is switched between the on position, in which the swing-in interlocking pin shaft 520 enters into the stopper groove 442 and the inner wall of the stopper groove 442 is stopped in the axial direction of the interlocking fixing shaft 20, and the off position, so that the swing-in interlocking part 50 is locked; when the operating opening interlocking sleeve 430 rotates along the first arc-shaped channel 701, and the hand opening interlocking guide plate 420 reaches the opening position, the limit groove 442 is separated from the swing-in interlocking pin shaft 520, and the opening interlocking connecting lever 40 releases the locking of the swing-in interlocking part 50.
Referring to fig. 2 and 9, the crank head 30 includes a crank fixing shaft 310 rotatably installed on the fixed rocker arm support 10 and coaxially rotating with the interlocking fixing shaft 20, wherein the crank fixing shaft 310 is connected with a crank guide sleeve 320 for interlocking with a frame of the hand truck. The crank arm guide sleeve 320 and the crank arm fixing rotating shaft 310 can be generally set to be parallel shafts, so that a larger moment can be generated when the crank arm fixing rotating shaft 310 drives the crank arm guide sleeve 320 to rotate.
The operation of the interlock of this embodiment is as follows: referring to fig. 1, the circuit breaker is in the on position and the hand truck is in the working position. At this time, the operation opening interlock bushing 430 rotates along the first arc passage 701, and the hand opening interlock guide plate 420 rotates around the axis of the interlock fixing shaft 300 and opens the circuit breaker. At this time, the swing-in interlocking part 50 is unlocked, the swing-in interlocking shaft sleeve 530 is manually operated to axially move from the third channel 703 to the second arc-shaped channel 702 by overcoming the resistance of the return spring 60 of the swing-in mechanism, then the swing-in interlocking shaft sleeve 530 can continuously rotate around the axis of the interlocking fixed shaft 20 along the second arc-shaped channel 702, and further the crank arm head 30 is driven to rotate, so that the locking of the working position of the handcart is released, and the handcart can be pushed and pulled to exit the working position at this time.
Further, in some embodiments of the present invention, as shown in fig. 1, 4, 6 and 7, the operation panel 70 includes an arc-shaped plate including a first arc-shaped plate 710 and a second arc-shaped plate 720 which are placed side by side in the axial direction of the interlocking fixing shaft 20, the first arc-shaped channel 701 is opened on the first arc-shaped plate 710, and the second arc-shaped channel 702 and the third channel 703 are opened on the second arc-shaped plate 720. In the axial direction of the interlocking fixing shaft 20, both sides of the first arc passage 701 have a first stopper 741 and a second stopper 742 fixed to the first arc plate 710, respectively. A third baffle 743 is also fixedly arranged on the second arc-shaped plate 720.
Specifically, the first blocking plate 741 and the second blocking plate 742 are respectively disposed on two sides of the first curved passage 701, and the second blocking plate 742 and the third blocking plate 743 are respectively disposed on two sides of the second curved passage 702 and two sides of the third passage 703. Thus, an installation space for protecting the opening interlock sleeve 430 is formed between the first shutter 741 and the second shutter 742. An installation space for protecting the swing-in interlock sleeve 530 is formed between the third shutter 743 and the second shutter 742. It should be noted that the second blocking plate 742 can be fixedly connected to the first arc-shaped plate 710, and can also be fixedly connected to the second arc-shaped plate 720. If the second blocking plate 742 is located at the joint seam between the first arc-shaped plate 710 and the second arc-shaped plate 720, it is integrally connected by welding. In addition, the arc plate formed by the first arc plate 710 and the second arc plate 720 can also be an integrated structure, wherein the first baffle 741, the second baffle 742 and the third baffle 743 are welded on the arc plate, and can play a role of a reinforcing rib.
Further, between the third flap 743 and the second flap 742, there are provided an upper flap 744 and a lower flap 745 fixed to the second arc plate 720, and a side flap 746. In the circumferential direction of the interlocking fixing shaft 20, an upper baffle 744 and a lower baffle 745 are respectively located at both ends of the second arcuate channel 702, and as shown in fig. 6 and 7, the upper baffle 744 is located above the second arcuate channel 702, and the lower baffle 745 is located below the second arcuate channel 702. Thus, upper and lower stops 744 and 745 are located at opposite ends of the swing interlock sleeve 530 in the circumferential direction. The side guard 746 includes a first stopper 7461 extending in a circumferential direction of the interlocking fixing shaft 20 and a second stopper 7462 extending in an axial direction of the interlocking fixing shaft 20. The first blocking portion 7461 is located on the side of the second arcuate channel 702 away from the third flap 743. As shown in fig. 6 and 7, the first stop 7461 is located to the right of the second arcuate channel 702. Thus, in the axial direction of the interlocking fixing shaft 20, the third blocking plate 743 and the first blocking portion 7461 are respectively arranged at two sides of the second arc-shaped channel 702. Therefore, the swing-in interlocking bush 530 can be guided and limited in the axial and circumferential directions of the interlocking fixing shaft 20 during the installation and rotation of the swing-in interlocking bush 530 in the second arc passage 702. In addition, the lower baffle 745 also extends to the side of the third channel 703 remote from the upper baffle 744. As in fig. 6 and 7, the lower baffle 745 also extends below the third passage 703. In this way, in the circumferential direction of the interlocking fixing shaft 20, the upper and lower sides of the third channel 703 are respectively provided with the second blocking portion 7462 and the lower blocking plate 745, so that the movement of the swinging-in interlocking shaft sleeve 530 in the third channel 703 can be guided and limited.
In the above embodiment, the first curved plate 710, the second curved plate 720, the first shutter 741, the second shutter 742, the third shutter 743, the upper shutter 744 and the lower shutter 745, and the side shutter 746 may be formed as a single piece by welding. At least one of the first arc 710 and the second arc 720 may be provided with a mounting hole 722 for use when the operation panel 70 is fixed to the frame of the hand truck.
Further, in some embodiments of the present invention, as shown in fig. 3, the opening interlocking connecting lever 40 further includes an opening interlocking swing-in sleeve 450 connected to the hand opening sleeve 410, wherein an opening is formed at one end of the opening interlocking swing-in sleeve 450, the opening interlocking sleeve 430 extends into the opening, and an opening interlocking compression spring 460 is further disposed between the opening interlocking sleeve 430 and the bottom wall of the opening. Thus, the opening interlock sleeve 430 is urged to keep engagement with the operation panel 70 against separation by the elastic force of the opening interlock compression spring 460.
Further, as shown in fig. 2, 3 and 8, the interlocking fixing shaft 20 is a hollow shaft, and an axial sliding slot 210 penetrating the interlocking fixing shaft 20 in the radial direction is formed in the interlocking fixing shaft 20. The rock-in mechanism return spring 60 is placed inside the interlocking fixed shaft 20 in the axial direction of the interlocking fixed shaft 20. The interlock further includes a fixed tension spring pin shaft 80 and a fixed tension spring long shaft 90, wherein the fixed tension spring pin shaft 80 extends into the interlock stationary shaft 20 and is connected with the swing mechanism return spring 60, and the fixed tension spring long shaft 90 passes through the swing sleeve 510 and extends into the axial chute 210 and is connected with the swing mechanism return spring 60. As shown in fig. 2, the two ends of the swing mechanism return spring 60 respectively hook the fixed tension spring pin 80 and the fixed tension spring long shaft 90. Thus, the reset mechanism of the swing interlocking part 50 is arranged inside the interlocking fixed shaft 20, and the structure is compact. The stationary extension spring pin 80 is configured as shown in fig. 10 and includes a top portion 810 and an axial portion 820 extending from the top portion 810. Axial portion 820 extends into the interior of interlocking stationary shaft 20 and tip 810 abuts the outer surface of interlocking stationary shaft 20. The structure of the long shaft 90 of the fixed tension spring is shown in fig. 13, and includes an end portion 910 and a connecting portion 920 extending from the end portion 910, the connecting portion 920 extends into the axial sliding slot 210, and the end portion 910 abuts against the outer surface of the rock sleeve 510. When the shake-in interlocking part 50 moves axially after unlocking, the fixed tension spring long shaft 90 is driven to move axially in the axial sliding groove 210, and the shake-in mechanism return spring 60 is enabled to store energy.
According to some embodiments of the present invention, as shown in fig. 9, the crank head 30 further includes a crank fixing plate 330 connecting the crank fixing shaft 310 and the crank guide 320, wherein the crank fixing shaft 310 and the crank guide 320 are parallel to each other and located at both sides of the crank fixing plate 330. As shown in fig. 1, the interlocking fixing shaft 20 is located at one side of the fixed rocker arm support 10, the crank guide 310 and the crank fixing plate 330 are located at the other side of the fixed rocker arm support 10, and the crank fixing rotating shaft 320 passes through the fixed rocker arm support 10 and extends into one end of the interlocking fixing shaft 20. That is, as shown in fig. 2, the crank arm fixing shaft 320 is nested with the interlocking fixing shaft 20. In this embodiment, the crank arm fixing shaft 310, the crank arm guiding sleeve 320 and the crank arm fixing plate 330 may be connected together by welding.
Further, in some embodiments of the present invention, as shown in fig. 1, 2, 3 and 8, a plug weld hole 220 is provided on the outer surface of the interlocking fixed shaft 20. The plug welding hole 220 has solder therein for connecting the crank arm fixing shaft 310 and the interlocking fixing shaft 20. Specifically, the plug welding hole 220 penetrates the interlocking fixing shaft 20 so that the outer surface of the crank arm fixing rotating shaft 310 is communicated with the outside, and solder can be added into the plug welding hole 220 for welding.
Further, in some embodiments of the present invention, as shown in fig. 5, the fixed rocker arm supporting base 10 includes a lower supporting base 110 and an upper supporting base 120 which are spliced together, a supporting base bushing 130 is sandwiched between the lower supporting base 110 and the upper supporting base 120, and a crank arm fixing rotating shaft 310 is engaged with the supporting base bushing 130. Referring to fig. 2, the crank arm fixing shaft 310 passes through the supporting seat bushing 130 and extends into the end of the interlocking fixing shaft 20.
Further, in some embodiments of the present invention, as shown in fig. 2 and 9, the outer surface of the crank arm fixed shaft 310 also has a retaining ring 312 on it near the interlocking fixed shaft 20. After the crank arm fixing shaft 310 is assembled with the interlocking fixing shaft 20, the positioning ring 312 is located between the fixed rocker arm support 10 and the interlocking fixing shaft 20 and is axially abutted against the support seat shaft sleeve 130, so that the crank arm fixing shaft 310 is prevented from being separated from the interlocking fixing shaft 20.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An interlock device for a handcart circuit breaker, comprising:
a fixed rocker arm support base for fixing to a frame of the hand truck;
the interlocking fixed shaft is rotatably arranged on the fixed rocker arm supporting seat;
the crank arm head is rotatably arranged on the fixed rocker arm supporting seat, coaxially rotates with the interlocking fixed shaft and is used for interlocking with a frame of the handcart;
the rocking interlocking part is used for driving the crank arm head to unlock the frame;
the switching-off interlocking connecting lever is used for being operated to switch on or switch off the circuit breaker and has a switching-on position and a switching-off position, wherein the switching-off interlocking connecting lever locks the swinging-in interlocking part at the switching-on position, and the switching-off interlocking connecting lever unlocks the swinging-in interlocking part at the switching-off position; and
and the swinging mechanism return spring is used for providing elastic force for returning the swinging interlocking part.
2. The interlock of claim 1 further comprising an operator panel for securing to the frame of the hand truck, said operator panel having a first arcuate channel, a second arcuate channel and a third channel, said second arcuate channel and third channel communicating in an axial direction of the interlock stationary shaft;
the shaking interlocking part comprises a shaking sleeve which is sleeved on the interlocking fixing shaft in an axially movable manner, the shaking sleeve is provided with a shaking interlocking pin shaft and a shaking interlocking shaft sleeve, and the shaking interlocking shaft sleeve moves in a second arc-shaped channel and a third channel;
the shaking-in mechanism return spring is arranged between the interlocking fixed shaft and the shaking-in sleeve and used for providing elastic force for keeping the shaking-in interlocking shaft sleeve in the third channel, and the shaking-in interlocking shaft sleeve can move from the third channel to the second channel when overcoming the elastic force;
the brake separating interlocking crank arm comprises a hand separating sleeve which is rotatably sleeved on the interlocking fixed shaft, a hand separating interlocking guide plate connected with the hand separating sleeve, a brake separating interlocking sleeve moving in a first arc-shaped channel and an interlocking lock plate, wherein a limit groove is formed in the interlocking lock plate along the circumferential direction of the interlocking fixed shaft, and the hand separating sleeve is provided with different working positions at which the limit groove is matched with or separated from the shaking interlocking pin shaft;
the crank arm head comprises a fixed rocker arm supporting seat and a crank arm fixed rotating shaft which is coaxially rotated with the interlocking fixed shaft, and the crank arm fixed rotating shaft is connected with a crank arm guide sleeve which is used for being interlocked with a frame of a handcart.
3. The interlocking device according to claim 2, wherein the operation panel comprises an arc-shaped plate, the arc-shaped plate comprises a first arc-shaped plate and a second arc-shaped plate which are arranged side by side along the axial direction of the interlocking fixing shaft, the first arc-shaped channel is arranged on the first arc-shaped plate, the second arc-shaped channel and the third channel are arranged on the second arc-shaped plate, the operation panel further comprises a first baffle fixed on the first arc-shaped plate, a second baffle fixed on the first arc-shaped plate and/or the second arc-shaped plate, and a third baffle fixed on the second arc-shaped plate, wherein the first baffle and the second baffle are respectively positioned on two sides of the first arc-shaped channel, and the second baffle and the third baffle are positioned on two sides of the second arc-shaped channel and on two sides of the third channel in the axial direction of the interlocking fixing shaft.
4. The interlock device according to claim 3, wherein said operation panel further comprises an upper baffle and a lower baffle fixed to said second arc-shaped plate and located between said third baffle and said second baffle, and a side baffle, wherein said upper baffle and said lower baffle are located at both ends of said second arc-shaped channel, respectively, in a circumferential direction of said interlock fixing shaft; the side baffle comprises a first blocking part extending along the circumferential direction of the interlocking fixing shaft and a second blocking part extending along the axial direction of the interlocking fixing shaft, the first blocking part is positioned on one side, far away from the third baffle, of the second arc-shaped channel, and the lower baffle extends to one side, far away from the upper baffle, of the third channel.
5. The interlocking device according to claim 2, characterized in that the opening interlocking connecting lever further comprises an opening interlocking swing-in sleeve connected with the hand opening sleeve, an opening is formed in one end of the opening interlocking swing-in sleeve, the opening interlocking sleeve extends into the opening, and an opening interlocking compression spring is further arranged between the opening interlocking sleeve and the bottom wall of the opening.
6. The interlocking device according to claim 2, wherein the interlocking fixing shaft is a hollow shaft, an axial sliding groove which radially penetrates through the interlocking fixing shaft is formed in the interlocking fixing shaft, the rocking mechanism return spring is placed inside the interlocking fixing shaft along the axial direction of the interlocking fixing shaft, the interlocking device further comprises a fixed tension spring pin shaft and a fixed tension spring long shaft, the fixed tension spring pin shaft extends into the interlocking fixing shaft and is connected with the rocking mechanism return spring, and the fixed tension spring long shaft penetrates through the rocking sleeve and extends into the axial sliding groove and is connected with the rocking mechanism return spring.
7. The interlock device of claim 6 wherein the lever head further comprises a lever fixing plate connecting the lever fixing shaft and the lever guide sleeve, the interlock fixing shaft is located on one side of the fixed rocker arm support base, the lever guide sleeve and the lever fixing plate are both located on the other side of the rocker arm support base, and the lever fixing shaft passes through the fixed rocker arm support base and extends into the interior of one end of the interlock fixing shaft.
8. The interlocking device according to claim 7, wherein a plug welding hole is formed on the outer surface of the interlocking fixing shaft, and solder for connecting the crank arm fixing rotating shaft and the interlocking fixing shaft is arranged in the plug welding hole.
9. The interlock of claim 7 wherein said fixed rocker arm support includes an upper support and a lower support joined together with a support boss interposed therebetween, said crank arm fixed pivot cooperating with said support boss.
10. The interlock of claim 7 wherein said outer surface of said crank arm fixed shaft further includes a retaining ring positioned adjacent said interlock fixed shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811244056.6A CN109217159B (en) | 2018-10-24 | 2018-10-24 | Interlocking device of handcart circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811244056.6A CN109217159B (en) | 2018-10-24 | 2018-10-24 | Interlocking device of handcart circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109217159A CN109217159A (en) | 2019-01-15 |
| CN109217159B true CN109217159B (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811244056.6A Active CN109217159B (en) | 2018-10-24 | 2018-10-24 | Interlocking device of handcart circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109217159B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707580B (en) * | 2019-08-28 | 2020-12-01 | 贵州电网有限责任公司 | In put cabinet circuit breaker and overhaul blocking device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11164423A (en) * | 1997-11-28 | 1999-06-18 | Yaskawa Electric Corp | Interlock device for pull-out type breaker |
| CN202121241U (en) * | 2011-07-11 | 2012-01-18 | 厦门明翰电气股份有限公司 | Anti-misoperation locking device for electric grounding knifeswitch of medium voltage switchgear |
| CN102545085B (en) * | 2011-12-02 | 2016-09-14 | 江苏华鹏成套电气股份有限公司 | Trolley-shaking interlocking device for breaker of direct-current switch cabinet |
| CN103489691B (en) * | 2013-09-03 | 2016-06-08 | 江苏天港箱柜有限公司 | The interlock mechanism at operating axis and back door in high voltage power distributing cabinet |
| KR101667639B1 (en) * | 2014-12-08 | 2016-10-19 | 엘에스산전 주식회사 | 3-position interlock control apparatus |
| CN204297482U (en) * | 2014-12-08 | 2015-04-29 | 厦门明翰电气股份有限公司 | The special interlocking latch of a kind of gas ring main unit gas tank transfer dolly |
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2018
- 2018-10-24 CN CN201811244056.6A patent/CN109217159B/en active Active
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| Publication number | Publication date |
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| CN109217159A (en) | 2019-01-15 |
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