CN111641151A - Locking device - Google Patents
Locking device Download PDFInfo
- Publication number
- CN111641151A CN111641151A CN202010397706.1A CN202010397706A CN111641151A CN 111641151 A CN111641151 A CN 111641151A CN 202010397706 A CN202010397706 A CN 202010397706A CN 111641151 A CN111641151 A CN 111641151A
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- China
- Prior art keywords
- rod
- circuit breaker
- crank arm
- locking
- middle door
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses a blocking device for blocking a middle door of a breaker chamber of a medium voltage distribution cabinet, comprising: the crank arm is arranged on a middle partition plate of the breaker chamber and is movably connected with the middle partition plate; the reset spring is arranged on a middle door of the breaker chamber and is connected to the crank arm through a pull rope; the connecting rod mechanism comprises a transmission plate, a locking rod and an additional rod which are sequentially connected end to end; one end of the transmission plate is movably connected to the reset spring, the other end of the transmission plate is movably connected with one end of the lock rod, and the other end of the lock rod is detachably connected with the additional rod; when the middle door is closed, the additional rod is arranged opposite to a through hole formed in the middle door and is used for being matched with the through hole; the latching device closes the center door when a circuit breaker trolley in the circuit breaker chamber is pushed over the center screen toward the operating position.
Description
Technical Field
The invention relates to the field of electrician and electrical equipment, in particular to a locking device for a medium-voltage power distribution cabinet.
Background
In order to ensure the safety of equipment and operators, a variety of mechanical locking devices are provided in a conventional medium voltage distribution cabinet (also called a center cabinet), wherein fig. 1 is a schematic diagram of a locking device for a medium voltage distribution cabinet in the prior art. As shown in fig. 1, in order to prevent the existing middle door 20 from being opened at the working position by the existing middle-set-type existing circuit breaker handcart 10, which causes an electric shock accident to a person, the existing mechanical link mechanism is used as a transmission device on the existing valve mechanism 40 of the existing circuit breaker chamber 30, that is, the existing mechanical link mechanism is a link 50, the link 50 is used as a locking mechanism of the locking device, that is, a locking rod, the existing circuit breaker handcart 10 has an existing pushing shaft 70, the existing circuit breaker handcart 10 is pushed along the existing pushing shaft 70 to drive the existing valve mechanism 40, and then the link 50 is transmitted to extend the link 50, so as to block the door lock 201 of the existing middle door 20, or to unlock the existing middle door 20 when the link 50 is retracted, so that when the existing circuit breaker handcart 10 is pushed to the working position and may be electrified, the conventional middle door 20 is not opened due to misoperation, thereby preventing the occurrence of electric shock accidents of personnel and realizing the function of preventing the high-voltage distribution equipment from locking in a five-prevention mode and preventing the high-voltage distribution equipment from entering into the live interval by mistake.
Referring to fig. 1, the existing mechanical link mechanism of the existing centrally installed switchgear for locking the existing middle door 20 is driven by the existing valve mechanism 40 disposed on the single side of the right side of the existing breaker chamber 30, and the existing valve mechanism 40 of the existing breaker chamber 30 mainly functions to open and close a valve (the open state of the existing middle door 20) for shielding a static contact, and in order to flexibly open and close the valve, the existing push plates 60 on the left and right sides of the existing breaker handcart 10 need to be used to push the existing valve mechanisms 40 on the two sides of the existing middle door 20 to perform transmission in a balanced manner, so that the valve keeps horizontal rising and falling; on this basis, the connecting rod 50 attached to the existing valve mechanism 40 on one side of the existing middle door 20 for locking the existing middle door 20 will additionally increase the resistance of the existing valve mechanism 40 on one side, and the resistance is conducted to the existing circuit breaker handcart 10, so that the resistance on two sides of the existing circuit breaker handcart 10 is unbalanced: the additional mechanism is that one side of the connecting rod 50 is large, the other side is small, the existing circuit breaker handcart 10 can be inclined, and then the valve is not horizontal in the ascending and descending processes, so that the existing valve mechanism 40 is blocked, the existing circuit breaker handcart 10 is blocked in the propelling process, and a blocking mechanism, such as the existing mechanical connecting rod mechanism, fails, and equipment electrical accidents and personal safety accidents are caused in serious cases.
Disclosure of Invention
The invention aims to provide a locking device, which is used for locking a middle door of a breaker chamber of a medium-voltage power distribution cabinet, and the connecting device enables a connecting lever to be matched with a connecting rod mechanism through a guy cable and a reset spring for use, the connecting rod mechanism comprises a transmission plate, a lock rod and an additional rod which are sequentially connected, the additional rod is detachably connected with the lock rod, the additional rod is matched with a through hole formed in the middle door, when a breaker handcart in the breaker chamber is pushed to a working position on a middle partition plate, the connecting lever is pressed by the breaker handcart to be displaced, the connecting lever drives the additional rod of the lock rod to extend out of the middle door through the guy cable and the reset spring to block a valve mechanism in the breaker chamber, and the function of locking the middle door is realized; meanwhile, the knob of the additional rod is made to fall off from the outside of the middle door through the through hole, and the unlocking function under emergency is realized.
In order to achieve the purpose, the invention adopts the following technical scheme.
A blocking device for blocking a middle door of a circuit breaker compartment of a medium voltage distribution cabinet, said blocking device comprising: the crank arm is arranged on a middle partition plate of the breaker chamber and is movably connected with the middle partition plate; the reset spring is arranged on the middle door of the breaker chamber and is connected to the crank arm through a pull rope; the connecting rod mechanism comprises a transmission plate, a locking rod and an additional rod which are sequentially connected end to end; one end of the transmission plate, which is far away from the lock rod, is connected to the return spring; when the middle door of the breaker chamber is closed, the additional rod is arranged opposite to a through hole formed in the middle door and is used for being matched with the through hole; when a breaker handcart in the breaker chamber pushes the middle partition plate to the working position, the locking device closes the middle door.
Furthermore, the lock rod is detachably connected with the additional rod.
Further, the locking rod with the attachement rod carries out screw-thread fit, wherein, screw-thread fit department the tip of locking rod is provided with the screw hole, the screw hole extends along the length direction of locking rod, the peripheral surface of the tip of attachement rod is provided with the external screw thread face, the locking rod the screw hole with the attachement piece the external screw thread face cooperatees.
Furthermore, one end of the crank arm is movably connected with the middle partition plate through a first rotating shaft, the crank arm is connected with the first rotating shaft in a pin shaft mode, and the first rotating shaft is fixedly installed on the middle partition plate.
Further, the circuit breaker handcart is in when advancing to operating position on the median septum, the connecting lever be used for by the circuit breaker handcart is pressed and is shifted, and the connecting lever passes through the cable reaches the reset spring drive the locking lever the additional rod stretches out the circuit breaker room outside the through-hole, the additional rod is used for blocking an indoor valve mechanism of circuit breaker, in order to block the circuit breaker room the well door.
Furthermore, one end of the connecting lever, which deviates from the first rotating shaft, is provided with a roller, the roller is fixedly connected with the connecting lever, and the connecting lever rotates around the axis of the connecting lever.
Further, the both ends of cable respectively with the connecting lever reaches reset spring can dismantle the connection, wherein, the both ends peripheral surface of cable is provided with the overcoat mounting, the overcoat mounting be used for with the cable install in the connecting lever reaches on the reset spring.
Furthermore, the transmission plate is movably connected with the return spring in a pin shaft connection mode; and the transmission plate is movably connected with the lock rod in a pin shaft connection mode.
Further, be provided with a second pivot on the driving plate, the driving plate with carry out a swing joint between the second pivot, the second pivot fixed set up in on a lateral wall of circuit breaker room.
Further, the locking device further comprises a disassembling tool, and the disassembling tool is used for operating the additional rod at the through hole, so that the additional rod falls off to forcibly release the locking of the middle door.
The locking device has the beneficial effects that:
(1) the invention relates to a middle door locking device of a circuit breaker chamber, which is characterized in that a connecting lever is matched with a connecting rod mechanism through a pull rope and a reset spring, the connecting lever is arranged on the central line of a middle partition plate in the circuit breaker chamber, the connecting lever is pushed and pressed by the weight of a circuit breaker handcart, the connecting lever is linked with the connecting rod mechanism through the pull rope to complete the process of locking a middle door of the circuit breaker chamber, the middle door locking device is different from the middle door locking device in the prior art that a driving stress point is arranged on a valve mechanism on one side, so that the circuit breaker handcart cannot be deflected due to uneven stress on two sides, a series of problems of pushing clamping stagnation of the circuit breaker handcart, clamping stagnation of a locking device and the like due to deflection of the circuit breaker handcart are avoided, and an additional rod is arranged on a locking rod and detachably connected with the locking rod, so that unlocking.
(2) After the locking device is used, the medium-voltage power distribution cabinet can reduce the clamping stagnation of the locking device, and newly increases the function of unlocking the middle door in an emergency state, thereby reducing the maintenance power failure caused by mechanical faults and the economic loss caused by the maintenance power failure, and the equipment fault expansion and the personal injury loss caused by the failure of the locking device, improving the operability of the medium-voltage power distribution cabinet and also improving the safety of the whole power distribution system.
Drawings
Fig. 1 is a schematic view of a prior art blocking device for a medium voltage distribution cabinet.
Fig. 2 is a schematic view of the position of the locking device according to an embodiment of the invention installed in a medium voltage distribution cabinet.
Fig. 3 is a schematic illustration of the position of the embodiment of the locking device according to fig. 2 from another point of view when installed in a medium voltage switchgear.
Fig. 4 is a schematic structural view of a locking device in the embodiment of the present invention.
Fig. 5a and 5b are schematic views of the movement of the latching device of the present invention.
The reference numerals in the figures are respectively:
10. an existing circuit breaker handcart; 20. An existing middle door;
30. an existing circuit breaker chamber; 40. Existing valve mechanisms;
50. a connecting rod; 60. The existing push plate;
70. an existing propeller shaft; 201. A door lock;
100. a medium voltage distribution cabinet; 101. A circuit breaker chamber;
102. a middle door; 103. A middle partition plate;
104. a side wall; 105. A circuit breaker handcart;
1051. a propeller shaft; 1052. pushing the plate;
106. a door opening mechanism; 107. A through hole;
108. a middle door lock; 1. A crank arm;
2. a cable; 3. A return spring;
4. a link mechanism; 5. A drive plate;
6. a lock lever; 7. An additional rod;
8. a first rotating shaft; 9. A roller;
10. a second rotating shaft; 21. And (4) a jacket fixing piece.
Detailed Description
Specific embodiments of the latch apparatus of the present invention will be described below with reference to the accompanying drawings, but it should be noted that the implementation of the present invention is not limited to the following embodiments.
Referring to fig. 2, fig. 3 and fig. 4, fig. 2 is a schematic diagram illustrating a position of a locking device installed in a medium voltage distribution cabinet according to an embodiment of the present invention; fig. 3 is a schematic illustration of the position of the embodiment of the locking device according to fig. 2 from another perspective when installed in a medium voltage distribution cabinet; fig. 4 is a schematic structural view of a locking device in the embodiment of the present invention. The invention relates to a locking device, which is used for locking a breaker chamber 101 of a medium voltage power distribution cabinet 100, wherein the breaker chamber 101 comprises a middle door 102, a middle partition plate 103, a plurality of side walls 104 and a breaker handcart 105 arranged in the breaker chamber 101, the middle door 102, the middle partition plate 103 and the side walls 104 are enclosed into the breaker chamber 101, a door opening mechanism 106 is arranged on the side wall 104 of the breaker chamber 101, and the door opening mechanism 106 is used for unlocking the middle door 102; the locking device comprises a crank arm 1, a pull cable 2, a return spring 3 and a connecting rod mechanism 4, wherein the connecting rod mechanism 4 comprises a transmission plate 5, a locking rod 6 and an additional rod 7.
Please continue to fig. 3 and fig. 4. As shown in fig. 3, the crank arm 1 is movably connected to the middle partition 103 of the breaker chamber 101, as shown in fig. 4, one end of the crank arm 1 is connected to the middle partition 103 through a first rotating shaft 8, the crank arm 1 is preferably movably connected to the first rotating shaft 8 through a shaft pin, the first rotating shaft 8 is disposed below the middle partition 103, the first rotating shaft 8 is fixedly connected to the middle partition 103, and the crank arm 1 moves in a circle center relative to the first rotating shaft 8; the other end of the crank arm 1 is provided with a roller 9, the roller 9 is fixedly connected with the crank arm 1, and the roller 9 rotates around itself.
As shown in fig. 3, the crank arm 1 is disposed on a center line of the middle partition plate 103, the middle partition plate 103 and a pushing shaft 1051 of the circuit breaker handcart 105 are in the same direction, the circuit breaker handcart 105 is symmetrical about the center line of the middle partition plate 103, and symmetrical pushing plates 1052 are disposed on two sides of the circuit breaker handcart 105. As shown in fig. 4, when the circuit breaker handcart 105 is pushed to the working position on the intermediate partition plate 103, the crank arm 1 is used for being pressed by the circuit breaker handcart 105 to displace, and the thrust and the self weight of the circuit breaker handcart 105 uniformly push down the crank arm 1 and the roller 9 on the crank arm 1, the crank arm 1 displaces relative to the intermediate partition plate 103 around the first rotating shaft 8 after being pressed, wherein an accommodating groove (not shown) is arranged on the intermediate partition plate 103, and the crank arm 1 moves in the accommodating groove of the intermediate partition plate 103.
Referring to fig. 3 and 4, the crank arm 1 is connected to the return spring 3 through the cable 2, specifically, one end of the cable 2 is mounted on a wall of the crank arm 1, the other end of the cable 2 is connected to one end of the return spring 3, two ends of the cable 2 are detachably connected to the crank arm 1 and the return spring 3, and the other end of the return spring 3 is fixed to the side wall 104 of the circuit breaker chamber 101. Wherein, the peripheral surface at the both ends of cable 2 is equipped with overcoat mounting 21 respectively, overcoat mounting 21 for cable 2 is slidable, overcoat mounting 21 be used for with the both ends of cable 2 fixed mounting respectively in crank arm 1 with on reset spring 3, for example overcoat mounting 21 will through threaded connection respectively the both ends of cable 2 are fixed respectively extremely crank arm 1 with on reset spring 3. In addition, the cable 2 is a core pulling cable.
Continuing to see fig. 4, link mechanism 4 includes one of end to end connection in proper order drive plate 5, one locking lever 6, and one additional rod 7, wherein, drive plate 5's one end swing joint in reset spring 3 is last, the swing joint mode is preferably round pin axle swing joint, drive plate 5's the other end with locking lever 6's one end swing joint, the connection mode is preferably round pin axle swing joint. And, be provided with a second pivot 10 on the driving plate 5, the one end of second pivot 10 with driving plate 5 carries out a swing joint, the other end of second pivot 10 install in on the circuit breaker room 101, preferred embodiment does, second pivot 10 with circuit breaker room 101 lateral wall 104 fixed connection, driving plate 5 for second pivot 10 is free rotation.
Continuing to fig. 4, the end of the lock lever 6 facing away from the transmission plate 5 is detachably connected to the end of the attachment lever 7. As a preferred embodiment, the connection mode of the lock rod 6 and the accessory rod 7 is preferably a screw-fit mode, at the screw-fit position, a threaded hole is arranged at the end part of the lock rod 6, an external thread surface is arranged on the outer circumferential surface of the end part of the accessory rod 7, and the connection between the threaded hole of the lock rod 6 and the external thread surface of the accessory rod 7 is a screw-fit detachable connection; the length extension direction of the lock lever 6 is the same as the length extension direction of the accessory lever 7, and the length extension directions of the lock lever 6 and the accessory lever 7 are the same as the direction of the center line of the middle partition plate 103. And the screw hole of the locking bar 6 extends along the length direction of the locking bar 6.
Referring to fig. 2 and 3, when the middle door 102 of the breaker chamber 101 is closed, the additional rod 7 is disposed opposite to a through hole 107 formed in the middle door 102, and the additional rod 7 is retractable in the through hole 107.
In the embodiment of the invention, as shown in fig. 2, 3 and 4, the driving force of the locking device is derived from the crank arm 1, the crank arm 1 is pushed by the circuit breaker handcart 105, namely, the self weight of the circuit breaker handcart 105 is utilized to push the roller 9 of the crank arm 1, and further pushes the crank arm 1, the crank arm 1 is linked with the link mechanism 4 to complete the locking of the middle door 102, specifically, when the circuit breaker handcart 105 is pushed to the working position on the middle partition plate 103, the crank arm 1 is pressed to displace by the circuit breaker handcart 105, and the connecting lever 1 passes through the cable 2 and the reset spring 3 drives the locking lever 6, the additional rod 7 of the locking lever 6 stretches out the circuit breaker room 101 of the medium voltage power distribution cabinet 100 is outside, blocks a valve mechanism 106 in the circuit breaker room 101, so as to lock the middle door 102 of the circuit breaker room 101. In this embodiment, the lock lever 6 serves as a locking mechanism of the locking device.
It is worth mentioning that connecting lever 1 links 4 completion interlocks of link mechanism the process of well door 102, because connecting lever 1 install in on the central line of circuit breaker handcart 105, the thrust of circuit breaker handcart 105 and dead weight will evenly push down connecting lever 1 reaches connecting lever 1 gyro wheel 9 can make circuit breaker handcart 105 can not produce the skew because of both sides atress is uneven, has avoided from this because of circuit breaker handcart 105 takes place the skew and leads to circuit breaker handcart 105 impels the jamming blocked mechanism 4 a series of problems such as jamming.
Furthermore, the locking device comprises a removal tool (not shown) for operating the additional lever 7 at the through hole 107. In this embodiment, the additional rod 7 serves as a forced unlocking mechanism of the locking device, and the through hole 107 of the middle door 102 is an unlocking hole.
Continuing to refer to fig. 3 and 4, under the condition that circuit breaker handcart 105 can not withdraw from or blocking mechanism is invalid, through the through-hole 107 that reserves on well door 102, use the extracting tool rotates annex pole 7 on the locking lever 6 for annex pole 7 drops, does not need under the condition that locking lever 6 resets, forces to relieve the shutting of well door 102, because annex pole 7 for locking lever 6 can be dismantled, realized the unblock under the outside emergency of medium voltage distribution cabinet 100.
Referring to fig. 5a and 5b, fig. 5a and 5b are schematic views of the locking device of the present invention. The use method of the locking device comprises the following steps:
as shown in fig. 5a and 4, when the circuit breaker handcart 105 is not pushed forward, the crank arm 1 and the roller 9 of the crank arm 1 face upward relative to the middle partition plate 103, the lock rod 6 does not extend, the middle door lock 108 is not limited, and the middle door 102 can be freely opened.
As shown in fig. 5b, 4 and 3, when the circuit breaker trolley 105 is advanced to the operating position, the circuit breaker handcart 105 advances along the central line of the middle partition plate 103, the crank arm 1 and the roller 9 on the middle partition plate 103 are pressed down by the circuit breaker handcart 105, the crank arm 1 is pressed and displaced, simultaneously, the crank arm 1 pulls the pulling cable 2, the pulling cable 2 stretches the return spring 3 installed on the side wall 104 of the breaker chamber 101, the return spring 3 pulls the lock lever 6 through the driving plate 5, so that the additional lever 7 of the lock lever 6 is protruded toward the outside of the middle door 102, i.e. the cabinet of the medium voltage distribution cabinet 100, so as to block the door opening mechanism 106 of the circuit breaker chamber 101, the door lock of the middle door 102 is limited, so that the middle door 102 cannot be unlocked, and the function of locking the middle door 102 is realized.
According to the locking device, the crank arm 1 is arranged on the central line of the middle partition plate 103 in the circuit breaker chamber 101, the crank arm 1 is pushed by the self weight of the circuit breaker handcart 105, the crank arm 1 is linked with the link mechanism 4 through the inhaul cable 2 and the reset spring 3, the link mechanism comprises the lock rod 6 and the additional rod 7, and the additional rod 7 is detachably connected with the lock rod 6; the locking rod 6 serves as a locking mechanism of the locking device, the additional rod 7 serves as a forced unlocking mechanism of the locking device, the purpose of locking the middle door 102 of the circuit breaker chamber 101 is achieved, meanwhile, unlocking under the emergency condition outside the medium-voltage power distribution cabinet 100 is achieved, and the function of the locking device is improved. After the locking device is used, the medium-voltage power distribution cabinet 100 reduces the clamping stagnation of the locking device, and newly adds the function of unlocking the middle door in an emergency state, thereby reducing the maintenance power failure caused by mechanical faults and the economic loss caused by the maintenance power failure, and the equipment fault expansion and the personal injury loss caused by the failure of the locking device, improving the operability of the medium-voltage power distribution cabinet, and also improving the safety of the whole power distribution system.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A blocking device for blocking a middle door of a circuit breaker compartment of a medium voltage distribution cabinet, characterized in that it comprises:
the crank arm is arranged on a middle partition plate of the breaker chamber and is movably connected with the middle partition plate;
the reset spring is arranged on the middle door of the breaker chamber and is connected to the crank arm through a pull rope;
the connecting rod mechanism comprises a transmission plate, a locking rod and an additional rod which are sequentially connected end to end; wherein the content of the first and second substances,
one end of the transmission plate, which is far away from the lock rod, is connected to the return spring; and the number of the first and second electrodes,
when the middle door of the breaker chamber is closed, the additional rod is arranged opposite to a through hole formed in the middle door and is used for being matched with the through hole;
when a breaker handcart in the breaker chamber pushes the middle partition plate to the working position, the locking device closes the middle door.
2. The lockout device of claim 1, wherein the locking bar is removably connected to the accessory bar.
3. The locking device according to claim 2, wherein the locking rod is screw-engaged with the additional rod, wherein a screw hole is provided at an end portion of the locking rod at the screw-engagement portion, the screw hole extending in a length direction of the locking rod, an outer circumferential surface of an end portion of the additional rod is provided with an outer thread surface, and the screw hole of the locking rod is engaged with the outer thread surface of the additional member.
4. The locking device of claim 3, wherein one end of the crank arm is movably connected to the middle partition plate by a first rotating shaft, the crank arm is movably connected to the first rotating shaft by a pin, and the first rotating shaft is fixedly mounted on the middle partition plate.
5. The locking device according to claim 4, wherein the circuit breaker handcart is in when advancing to the operating position on the median septum, the connecting lever is used for by the circuit breaker handcart is pressed and is shifted, and the connecting lever passes through the cable and the reset spring drive the additional rod of locking lever stretches out outside the through-hole of circuit breaker room, the additional rod is used for blocking a valve mechanism in the circuit breaker room, in order to block the circuit breaker room the median gate.
6. The locking device of claim 5, wherein a roller is disposed at an end of the crank arm facing away from the first rotating shaft, the roller is fixedly connected to the end of the crank arm, and the crank arm rotates around its axis.
7. The locking device of claim 6, wherein two ends of the cable are detachably connected to the crank arm and the return spring, respectively, and outer sleeve fasteners are disposed on outer peripheral surfaces of the two ends of the cable and used for mounting the cable on the crank arm and the return spring.
8. The lockout device of claim 7, wherein the drive plate is movably connected to the return spring by a pin connection; and the transmission plate is movably connected with the lock rod in a pin shaft connection mode.
9. The lockout device of claim 8, wherein the transmission plate is provided with a second shaft, the transmission plate is pivotally connected to the second shaft, and the second shaft is fixedly disposed on a side wall of the circuit breaker chamber.
10. A latch defined by claim 9 further including a removal tool for operating the attachment bar at the through hole to disengage the attachment bar to forcibly unlatch the center door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010397706.1A CN111641151A (en) | 2020-05-12 | 2020-05-12 | Locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010397706.1A CN111641151A (en) | 2020-05-12 | 2020-05-12 | Locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111641151A true CN111641151A (en) | 2020-09-08 |
Family
ID=72331107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010397706.1A Pending CN111641151A (en) | 2020-05-12 | 2020-05-12 | Locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111641151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605144A (en) * | 2020-11-20 | 2021-04-06 | 顺德职业技术学院 | Quick compression fittings is used in aluminum alloy furniture aluminum product production and processing |
| CN114050496A (en) * | 2021-11-24 | 2022-02-15 | 国网山东省电力公司莒南县供电公司 | Locking device for handcart position of circuit breaker |
-
2020
- 2020-05-12 CN CN202010397706.1A patent/CN111641151A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605144A (en) * | 2020-11-20 | 2021-04-06 | 顺德职业技术学院 | Quick compression fittings is used in aluminum alloy furniture aluminum product production and processing |
| CN112605144B (en) * | 2020-11-20 | 2022-02-15 | 顺德职业技术学院 | Quick compression fittings is used in aluminum alloy furniture aluminum product production and processing |
| CN114050496A (en) * | 2021-11-24 | 2022-02-15 | 国网山东省电力公司莒南县供电公司 | Locking device for handcart position of circuit breaker |
| CN114050496B (en) * | 2021-11-24 | 2023-09-22 | 国网山东省电力公司莒南县供电公司 | Locking device for circuit breaker handcart position |
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