CN107819275B - Interlocking device for reinforcing door plate - Google Patents
Interlocking device for reinforcing door plate Download PDFInfo
- Publication number
- CN107819275B CN107819275B CN201711064414.0A CN201711064414A CN107819275B CN 107819275 B CN107819275 B CN 107819275B CN 201711064414 A CN201711064414 A CN 201711064414A CN 107819275 B CN107819275 B CN 107819275B
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- Prior art keywords
- plate
- pin
- rotating shaft
- operation rotating
- positioning
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- 230000003014 reinforcing effect Effects 0.000 title abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/01—Frameworks
- H02B1/011—Open support bases
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/04—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with two sliding bars moved in opposite directions when fastening or unfastening
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses an interlocking device for reinforcing a door plate, which comprises a base, a cover plate and an operation rotating shaft, wherein the cover plate is connected with the base through a connecting screw; the base consists of a steel plate, a guide steel pin, a sliding interlocking pin, an interlocking pin plate, a press riveting screw and a reset pin; the cover plate and the operation rotating shaft are composed of a steel plate, an operation rotating shaft, a linkage plate, a positioning pin pulling plate, a positioning pin fixing plate, a positioning pin clamp spring, a positioning pin, a positioning sleeve, a guide plate, a linkage piece and a linkage pin; the invention has simple structure, convenient assembly and high reliability, solves the problem that the switch cabinet can provide protection for personnel nearby the switch cabinet when an arc event occurs in the switch cabinet at the normal working position, solves the problem of potential danger existing in the operation of personnel, and ensures the life safety.
Description
Technical Field
The invention relates to the technical field of power distribution equipment, in particular to an interlocking device for a reinforced door plate, which is used for improving the protection capability of a switch cabinet during internal faults.
Background
The switch cabinet is widely applied to a power system as power transmission and distribution equipment, the requirements of the switch cabinet on personal safety are required to be higher and higher, the switch cabinet is required to be in a normal working position in national standards of related switch cabinets, protection can be provided for personnel nearby the switch cabinet when an arc event occurs inside, and for the switch cabinet, the door plate or the sealing plate is required to effectively bear internal overpressure and local overheating generated by arc energy when internal faults occur, and the door plate cannot be excessively deformed due to mechanical or thermal stress, so that personnel nearby the switch cabinet are ensured not to be damaged.
At present, the method of the switch cabinet door plate for protecting the internal faults mainly increases the fixing force on the door plate by increasing the number of hinges and door locks on the left side and the right side of the door plate. The mode has increased the longitudinal intensity of door plant left and right sides, has controlled longitudinal deformation, and the shortcoming is transversely there is not fixed point, and door plant and shrouding lateral deformation degree are uncontrollable, and in actual in the internal failure type test of cubical switchboard, often the door plant deformation serious cause test failure often appears, and experiments show that this kind of way can only play the effect to the internal failure that electric arc energy is less, to the internal failure that electric arc energy is great or the bigger scheme of cabinet body width can not satisfy the requirement, has the potential safety hazard. Aiming at the problems, the method of adding a plurality of door locks in the transverse direction of the door plate is also quite obvious, and the method has the defects that firstly, the door opening and the door closing consume long time and the operation is troublesome; and secondly, the overall aesthetic degree of the cabinet body is destroyed.
Disclosure of Invention
The invention aims to solve the technical problem of providing the interlocking device for the reinforced door plate, which can provide protection for personnel nearby the switch cabinet when the switch cabinet is in a normal working position and an arc event occurs in the switch cabinet, solve the potential danger problem existing in the operation of the personnel and ensure the safety of people.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
through the technical scheme, the invention has the beneficial effects that:
the interlocking device for the reinforced door plate is characterized by comprising a base, a cover plate and an operation rotating shaft, wherein the cover plate and the operation rotating shaft are connected with the base through connecting screws;
the base consists of a steel plate, a guide steel pin, a sliding interlocking pin, an interlocking pin plate, a press riveting screw and a reset pin;
the steel plate is U-shaped;
the two interlocking pin plates are symmetrically arranged in the U-shaped groove of the steel plate, and the sliding interlocking pin and the reset pin are riveted on the interlocking pin plates,
The guide steel pin is arranged on the steel plate, penetrates through the interlocking pin plate and serves as a guide for the up-and-down movement of the interlocking pin plate;
the riveting screw is pressed on the steel plate and used for connecting and fixing the base and the cabinet body;
the cover plate and the operation rotating shaft are composed of a steel plate, an operation rotating shaft, a linkage plate, a positioning pin pulling plate, a positioning pin fixing plate, a positioning pin clamp spring, a positioning pin, a positioning sleeve, a guide plate, a linkage piece and a linkage pin;
the operating rotating shaft is arranged on the steel plate, and the side surface of the operating rotating shaft is provided with a hole for inserting and positioning a positioning pin in a locking and unlocking state of the interlocking device; the front surface of the operation rotating shaft is provided with a hexagonal groove hole for inserting a door lock key;
the linkage plate is arranged on the operation rotating shaft, and is provided with 3 holes for inserting linkage pins;
the locating pin pulling plate is sleeved on the locating pin, and the bottom of the locating pin pulling plate penetrates through the steel plate and extends out of the steel plate;
the locating pin fixing plate is arranged on the steel plate and used for fixing the locating pin;
the locating pin clamp spring is arranged on the round groove of the locating pin and used for locating the locating pin and the locating pin pulling plate;
the locating pin spring is sleeved on the locating pin;
the middle of the guide plate is provided with a slotted hole, both sides of the guide plate are provided with arc slotted holes, the middle slotted hole is arranged on the operation rotating shaft, and the arc slotted holes on both sides are used for inserting the reset pin;
the linkage plate is connected with the operation rotating shaft through a linkage pin;
the locating sleeve is sleeved on the operation rotating shaft and is respectively positioned between the guide plate and the linkage piece as well as between the guide plate and the steel plate.
In one embodiment of the invention, the upper and lower surfaces of the steel plate are respectively provided with 2 guide steel pin fixing holes, 4 sliding interlocking pin travel holes and 4 fixing holes for connecting with the cover plate and the operation rotating shaft; the bottom surface of the steel plate is provided with 9 holes, 6 press riveting screws for being pressed into the cabinet body frame, and 3 positioning holes for the cover plate and the operation rotating shaft to penetrate through.
In one embodiment of the invention, 4 fixing holes for connecting with a base are respectively formed on the upper surface and the lower surface of the steel plate, 3 circular hole grooves and 3 rectangular grooves are formed on the front surface of the steel plate, the 3 circular hole grooves are used for positioning the front end of an operation rotating shaft, 2 of the 3 rectangular grooves are used for welding a positioning pin fixing plate, and 1 is used for positioning a positioning pin pulling plate and limiting the action stroke.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an unlocked state of the present invention when installed;
FIG. 2 is a schematic diagram of the present invention in a locked state during installation;
FIG. 3 is a schematic diagram of the structure of the present invention;
FIG. 4 is a schematic view of the base structure of the present invention;
FIG. 5 is a schematic view of a cover plate and an operating shaft according to the present invention;
FIG. 6 is an exploded view of the cover plate and operating shaft of the present invention;
FIG. 7 is an enlarged view of A in FIG. 4;
FIG. 8 is an enlarged view of B in FIG. 4;
FIG. 9 is a schematic diagram of an unlocked state of the present invention;
FIG. 10 is a schematic diagram of the latch-up condition of the present invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
The invention discloses an interlocking device for reinforcing a door plate, wherein the interlocking device 1 is arranged on a cabinet body 2 and positioned at the upper and lower folded edges of the door plate 3, and fig. 1 is an unlocking state of the interlocking device, and the door plate 3 can be opened/closed; fig. 2 shows that after the door is closed, the door lock key 4 is rotated 90 ° clockwise to put the interlocking device 1 in a locked state, and the door panel 3 cannot be opened.
Referring to fig. 3 to 10, the interlocking device of the present invention is composed of three blocks, namely a base 11, a cover plate, an operation rotating shaft 12 and a connecting screw 13, wherein the base 11 is connected with the cover plate and the operation rotating shaft 12 by the connecting screw 13.
The base 11 consists of a steel plate 101, a guide steel pin 102, a sliding interlocking pin 103, an interlocking pin plate 104, a press riveting screw 105 and a reset pin 106; the steel plate 101 is U-shaped, the upper and lower surfaces of the steel plate 101 are respectively provided with 2 guide steel pin fixing holes, 4 sliding interlocking pin travel holes and 4 fixing holes for connecting with the cover plate and the operation rotating shaft 12, the U-shaped bottom surface of the steel plate 101 is provided with 9 holes, and 6 riveting screws 105,3 for being pressed into the steel plate for connecting with the cabinet frame are positioning holes for the operation rotating shaft 202 to penetrate; a guide steel pin 102 is mounted on the steel plate 101 as a guide for the up-and-down movement of the interlocking pin plate 104; the sliding interlocking pins 103 are riveted on the interlocking pin plate 104 by cylindrical pins, and the number of the sliding interlocking pins is 8; the interlocking pin plates 104 are 2 pieces in total, 9 holes and 3 semicircular holes are formed in each piece, 4 sliding interlocking pins 103,2 are used for riveting the sliding interlocking pins, the guiding steel pins 102 are penetrated, and the rest 3 sliding interlocking pins 106 are used for riveting the reset pins; the connecting riveting screw 105 is pressed on the steel plate 101 and is used for connecting and fixing the base 11 and the cabinet body; reset pin 106 is a cylindrical pin that is mounted to interlock pin plate 104.
The cover plate and the operation rotating shaft 12 are composed of a steel plate 201, an operation rotating shaft 202, a linkage plate 203, a positioning pin pulling plate 204, a positioning pin fixing plate 205, a positioning pin clamp spring 206, a positioning pin spring 207, a positioning pin 208, a positioning sleeve 209, a guide plate 210, a linkage piece 211 and a linkage pin 212; the upper surface and the lower surface of the steel plate 201 are respectively provided with 4 fixing holes for connection with the base 11, the front surface is provided with 3 circular hole grooves and 3 rectangular grooves, the 3 circular hole grooves are used for positioning the front end of the operation rotating shaft 202, 2 of the 3 rectangular grooves are used for welding positioning pin fixing plates 205,1 and are used for positioning pin pulling plates 204 and limiting the action stroke; the operation rotating shaft 202 is processed by round steel, 2 holes are formed for inserting and positioning the positioning pins 208 in the locking and unlocking states of the interlocking device, and a hexagonal groove hole in the front surface of the operation rotating shaft 202 is used for inserting the door lock key 4; the linkage plate 203 is a strip steel plate, and 3 holes are formed for inserting the linkage pins 212; the positioning pin pulling plate 204 is a flat plate, and has 1 round hole and 2 notches on the surface, wherein the round hole is used for penetrating into the positioning pin 208,2 notches and is used for penetrating into 1 rectangular groove on the steel plate 201; the positioning pin fixing plate 205 is 2 pieces in total and is provided with a hole in the middle of a flat plate for penetrating the positioning pin 208; the number of the positioning pin clamp springs 206 is 3, and the positioning pin clamp springs are arranged on the round grooves of the positioning pins 208 and are used for positioning the positioning pins 208 and the positioning pin pulling plates 204; the positioning pin spring 207 is a pressure spring and is installed on the positioning pin 208; the positioning pin 208 is made of round steel, and is provided with 3 clamping grooves for installing the positioning pin pulling plate 204 and the positioning pin clamp spring 206; the positioning sleeves 209 are steel sleeves, 6 in number are sleeved on the operation rotating shaft 202 and are positioned between the guide plate 210 and the linkage piece 211 and between the guide plate 210 and the steel plate 101; the guide plate 210 is a flat plate, a slotted hole in the middle is used for being installed on the operation rotating shaft 202, and arc-shaped slotted holes on two sides are used for inserting the reset pin 106; the linkage piece 211 is a flat plate, and is provided with 1 round hole and 1 hole slot, wherein the hole slot is used for being installed on the operation rotating shaft 202, and the round hole is used for pressing in the linkage pin 212; the linkage pin 212 is a cylindrical pin and is pressed and connected to the linkage piece 211; the number of the connecting screws 13 is 8, and the connecting screws are used for connecting the base 11, the cover plate and the operation rotating shaft 12, and the front side and the back side are 4 respectively.
The base 11 is assembled in the following order: the steel plate 101 is pressed into a press-riveting screw 105 for connecting with the cabinet frame; the interlocking pin plate 104 is riveted with 4 sliding interlocking pins 103 and 3 reset pins 106 each; as shown in fig. 2, the processed interlocking pin plates 104 are symmetrically arranged and then placed into the U-shaped grooves of the steel plate 101, and then 2 guiding steel pins 102 are fixed in the U-shaped grooves of the steel plate 101.
The cover plate and the operation shaft 12 are assembled in the following order: 2 positioning pin fixing plates 205 are welded on 2 rectangular grooves on the steel plate 201; the non-hole end of the positioning pin pulling plate 204 is inserted into a rectangular hole on the steel plate 201 near the middle position, and the hole on the positioning pin pulling plate 204 is kept concentric with the hole on the positioning pin fixing plate 205 after rotating for 90 degrees; the locating pin 208 penetrates from a hole of the locating pin fixing plate 205 at one end, is sleeved into the locating pin spring 207, penetrates through a hole on the locating pin pulling plate 204, penetrates out from a hole of the locating pin fixing plate 205 at the other end, fixes the locating pin pulling plate 204 in two adjacent clamping grooves of the locating pin 208 by using 2 locating pin clamping springs 206, and is clamped into a clamping groove of the locating pin fixing plate 205 extending out of the locating pin 208 by using another locating pin clamping spring 206; pulling the locating pin pulling plate 204 along the rectangular groove, placing the locating pin pulling plate 204 into the operation rotating shaft 202 in the middle hole groove in the direction shown in the exploded view of fig. 6, rotating left to the bottom, releasing the locating pin pulling plate 204 to enable the locating pin 208 to be inserted into the hole of the operation rotating shaft 202, locking the position of the middle operation rotating shaft 202, sleeving the rest 2 operation rotating shafts 202 into the steel plate 201 according to the position of the middle operation rotating shaft 202, respectively pressing 3 linkage pins 212 into the 3 linkage plates 211, sleeving the 3 linkage plates 211 into the operation rotating shaft 202, keeping the direction consistent, inserting the 3 linkage pins 212 into the 3 holes on the linkage plate 203, and sleeving the locating sleeve 209, the guide plate 210 and the locating sleeve 209 in sequence according to the direction shown in the exploded view of fig. 6, thus forming the cover plate and the operation rotating shaft 12; and finally, folding the base 11, the cover plate and the operation rotating shaft 12, enabling the operation rotating shaft 202 to penetrate into 3 positioning holes on the U-shaped bottom plate of the steel plate 101, enabling the reset pin 106 to be positioned in an arc-shaped slot hole of the guide plate 210, fixing the base 11, the cover plate and the operation rotating shaft 12 by using 8 connecting screws 13, and completing the assembly of the interlocking device.
The action mode of the invention is as follows: the assembled device is in an unlocked state, and the top end of the sliding interlocking pin 103 does not emerge from the steel plate 101; as shown in fig. 7, the door lock key 4 is inserted into the hexagonal groove hole on the front surface of the operation rotating shaft 202, the positioning pin pulling plate 204 is pulled leftwards along the rectangular groove on the steel plate 201, so that the positioning pin 208 is withdrawn from the hole of the operation rotating shaft 202, at this time, the door lock key 4 is rotated to rotate the operation rotating shaft 202 by 90 degrees, and due to the actions of the linkage piece 211, the linkage pin 212 and the linkage plate 203, 3 pieces of operation rotating shaft 202 are kept consistent, so that the guide plate 210 is also rotated by 90 degrees simultaneously, and 2 pieces of interlocking pin plates 104 are respectively lifted up and down along the guide steel pin 102, so that the sliding interlocking pin 103 mounted on the interlocking pin plate 104 extends out of the steel plate 101 and stretches into the holes at the upper edge and the lower edge of the door plate 3 to lock the door plate 3, release the positioning pin pulling plate 204, and at this time, the positioning pin 208 is inserted again into the locking hole of the operation rotating shaft 202 under the action of the positioning pin spring 207, at this time, the interlocking device is in a locking state (as shown in fig. 10); the unlocking operation step is the reverse operation of the locking operation, and at this time, the reset pin 106 pressed on the interlocking pin plate 104 is driven by the circular arc slot hole of the guide plate 210 to drive the interlocking pin plate 104 to drive the sliding interlocking pin 103 to reset, so that the unlocking is completed.
The cabinet door meets the requirement of reinforcing cabinet doors with different widths, improves the protection capability of the cabinet door in the case of internal faults, and meets the requirement that the switch cabinet in national standards can provide protection for personnel nearby the switch cabinet in the normal working position and in the case of arc events in the interior; meanwhile, the whole appearance of the cabinet body is not damaged, and the operation is convenient.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The interlocking device for the reinforced door plate is characterized by comprising a base, a cover plate and an operation rotating shaft, wherein the cover plate and the operation rotating shaft are connected with the base through connecting screws;
the base consists of a first steel plate, a guide steel pin, a sliding interlocking pin, an interlocking pin plate, a press riveting screw and a reset pin;
the first steel plate is U-shaped;
the two interlocking pin plates are symmetrically arranged in the U-shaped groove of the first steel plate up and down, and the sliding interlocking pin and the reset pin are riveted on the interlocking pin plates,
The guide steel pin is arranged on the first steel plate, penetrates through the interlocking pin plate and serves as a guide for the up-and-down movement of the interlocking pin plate;
the riveting screw is pressed on the first steel plate and used for connecting and fixing the base and the cabinet body;
the cover plate and the operation rotating shaft consist of a second steel plate, an operation rotating shaft, a linkage plate, a positioning pin pulling plate, a positioning pin fixing plate, a positioning pin clamp spring, a positioning pin, a positioning sleeve, a guide plate, a linkage plate and a linkage pin;
the operation rotating shaft is arranged on the second steel plate, and the side surface of the operation rotating shaft is provided with a hole for inserting and positioning a positioning pin in a locking and unlocking state of the interlocking device; the front surface of the operation rotating shaft is provided with a hexagonal groove hole for inserting a door lock key;
the linkage plate is arranged on the operation rotating shaft, and is provided with 3 holes for inserting linkage pins;
the locating pin pulling plate is sleeved on the locating pin, and the bottom of the locating pin pulling plate penetrates through the second steel plate and extends out of the second steel plate;
the locating pin fixing plate is arranged on the second steel plate and used for fixing the locating pin;
the locating pin clamp spring is arranged on the round groove of the locating pin and used for locating the locating pin and the locating pin pulling plate;
the locating pin spring is sleeved on the locating pin;
the middle of the guide plate is provided with a slotted hole, both sides of the guide plate are provided with arc slotted holes, the middle slotted hole is arranged on the operation rotating shaft, and the arc slotted holes on both sides are used for inserting the reset pin;
the linkage plate is connected with the operation rotating shaft through a linkage pin;
the positioning sleeve is sleeved on the operation rotating shaft and is respectively positioned between the guide plate and the linkage piece as well as between the guide plate and the first steel plate;
the upper and lower surfaces of the first steel plate are respectively provided with 2 guide steel pin fixing holes, 4 sliding interlocking pin travel holes and 4 fixing holes for connecting with the cover plate and the operation rotating shaft; the bottom surface of the first steel plate is provided with 9 holes, 6 press riveting screws for being pressed into the frame of the cabinet body, and 3 positioning holes for penetrating the cover plate and the operation rotating shaft in the operation rotating shaft;
the upper surface and the lower surface of the second steel plate are respectively provided with 4 fixing holes for connection with the base, the front surface of the second steel plate is provided with 3 circular hole grooves and 3 rectangular grooves, the 3 circular hole grooves are used for positioning the front end of the operation rotating shaft, 2 of the 3 rectangular grooves are used for welding the positioning pin fixing plate, and 1 is used for positioning the positioning pin pulling plate and limiting the action stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064414.0A CN107819275B (en) | 2017-11-02 | 2017-11-02 | Interlocking device for reinforcing door plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064414.0A CN107819275B (en) | 2017-11-02 | 2017-11-02 | Interlocking device for reinforcing door plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107819275A CN107819275A (en) | 2018-03-20 |
| CN107819275B true CN107819275B (en) | 2023-11-07 |
Family
ID=61603060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711064414.0A Active CN107819275B (en) | 2017-11-02 | 2017-11-02 | Interlocking device for reinforcing door plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107819275B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972929A (en) * | 2019-02-28 | 2019-07-05 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The reinforced cabinet multiple spot mechanical lock of anticreep |
| CN110538396B (en) * | 2019-09-20 | 2024-08-23 | 中际联合（北京）科技股份有限公司 | Falling protector |
| CN112735740A (en) * | 2020-12-26 | 2021-04-30 | 宋泽骏 | Anti-dismantling protection cabinet for outdoor transformer |
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| CN204645875U (en) * | 2015-05-14 | 2015-09-16 | 安徽明远电力设备制造有限公司 | A kind of transmission interlock of switchboard |
| CN204826927U (en) * | 2015-07-01 | 2015-12-02 | 上海昱章电气成套设备有限公司 | Guan qi device and nuclear power station middling pressure cabinet |
| CN204885871U (en) * | 2015-08-12 | 2015-12-16 | 杨田花 | Power switch of nai electric arc cabinet |
| CN205663328U (en) * | 2016-06-08 | 2016-10-26 | 山东爱普电气设备有限公司 | Explosion -proof locks of high voltage distribution cabinet bolt formula |
| CN206516923U (en) * | 2017-03-15 | 2017-09-22 | 刘世雄 | A kind of error-preventing locking mechanism of high-tension switch cabinet |
| CN107120005A (en) * | 2017-06-29 | 2017-09-01 | 无锡德林船舶设备有限公司 | Automatic locking mechanism and fire prevention watertight door |
| CN207625083U (en) * | 2017-11-02 | 2018-07-17 | 上海广电电气(集团)股份有限公司 | A kind of reinforcement door-plate interlock |
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