CN109244921B - Mechanical interlocking structure of switch cabinet - Google Patents
Mechanical interlocking structure of switch cabinet Download PDFInfo
- Publication number
- CN109244921B CN109244921B CN201811072525.0A CN201811072525A CN109244921B CN 109244921 B CN109244921 B CN 109244921B CN 201811072525 A CN201811072525 A CN 201811072525A CN 109244921 B CN109244921 B CN 109244921B
- Authority
- CN
- China
- Prior art keywords
- gear
- cabinet body
- clamping
- sides
- limiting
- Prior art date
- 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.)
- Active
Links
Images
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
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/173—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal drawer type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
-
- 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
- H02B11/02—Details
Abstract
The invention discloses a mechanical interlocking structure of a switch cabinet, which comprises a cabinet body and an installation drawer, wherein the installation drawer is connected with the cabinet body in a sliding manner, horizontal concave grooves are respectively arranged at two sides of the installation drawer, a row of limiting holes and arc-shaped strip holes are respectively arranged on the two concave grooves, and round holes are also arranged at the ends close to the inner sides of the two sides of the installation drawer; a clamping part and a limiting part are arranged inside one of the two sides of the cabinet body, and the clamping part comprises a clamping gear, a conical gear transmission mechanism and a fixed gear; the inside screens gear and the spacing part of including of the opposite side of the both sides of cabinet body, the dogtooth of screens gear inserts spacing downthehole, and spacing part includes rotary rod, spacing ball, spacing lug and telescopic shaft. The invention can ensure that the installation drawer can be positioned and clamped at a required position, and can also ensure that the installation drawer can be pulled out and inclined downwards for a certain angle, thereby being more convenient to carry out inspection operation on the interior of the installation drawer.
Description
Technical Field
The invention relates to the field of switch cabinet equipment, in particular to a mechanical interlocking structure of a switch cabinet.
Background
The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system. In a common switch cabinet, a locking mechanism is not arranged between a drawer unit and a cabinet body, so that the drawer unit is easy to slide when electric components in the drawer unit are operated; when the drawer unit is pulled out to check the electric elements in the drawer unit, the existing drawer can only be pulled out and pulled in directly, and the operation is inconvenient.
Disclosure of Invention
The present invention has been made to solve one of the above problems.
In order to achieve the purpose, the invention provides a mechanical interlocking structure of a switch cabinet, which comprises a cabinet body and an installation drawer, wherein the installation drawer is connected with the cabinet body in a sliding manner, horizontal concave grooves are respectively arranged at two sides of the installation drawer, a row of limiting holes and arc-shaped strip holes are respectively arranged on the two concave grooves, the arc-shaped strip holes are arranged at the end, close to the inner side, of the concave grooves, and round holes are also arranged at the end, close to the inner side, of the two sides of the installation drawer; a clamping part and a limiting part are arranged inside one of the two sides of the cabinet body, and the clamping part comprises a clamping gear, a conical gear transmission mechanism and a fixed gear; the opposite side of the both sides of cabinet body is inside including screens gear and spacing part, the dogtooth of screens gear inserts spacing downthehole, spacing part includes rotary rod, spacing ball, spacing lug and telescopic shaft, spacing ball and spacing lug link firmly respectively the both ends of rotary rod, spacing lug with the one end butt of telescopic shaft, the rotary rod can be rotatory around self center, the telescopic shaft is scalable to be inserted in the round hole.
Furthermore, the bevel gear transmission mechanism comprises a main bevel gear and an auxiliary bevel gear which are meshed with each other, and further comprises a first transmission shaft and a second transmission shaft.
Furthermore, one end of the first transmission shaft is fixedly connected with the middle part of the clamping gear, the other end of the first transmission shaft is fixedly connected with the middle part of the main bevel gear, one end of the second transmission shaft is fixedly connected with the middle part of the auxiliary bevel gear, and the other end of the second transmission shaft is fixedly connected with the middle part of the fixed gear.
Furthermore, the clamping gears protrude out of the inner surfaces of the two sides of the cabinet body and are clamped into the limiting holes of the mounting drawers.
Further, the fixed gear is arranged on the side edge of the opening of the cabinet body.
Furthermore, a clamping strip hole is further formed in the position, close to the fixed gear, of the side edge of the opening of the cabinet body.
Furthermore, a clamping strip is arranged in the clamping strip hole in a sliding mode, can slide towards the direction of the fixed gear, is inserted between teeth of the fixed gear, and fixes the fixed gear to be incapable of rotating.
Furthermore, the inner surfaces of two sides of the cabinet body are provided with an upper rail and a lower rail, and the mounting drawer slides between the upper rail and the lower rail.
Further, go up between track and the lower track and be close to cabinet body opening part and be equipped with gear mouth, spacing ball mouth and flexible shaft hole, partly of screens gear, spacing ball partly follow respectively gear mouth, spacing ball mouth protrusion the internal surface of the both sides of cabinet body, the telescopic shaft can be followed flexible shaft hole stretches out.
Further, the bottom of the installation drawer is provided with a roller which can slide on the lower rail.
Compared with the prior art, the invention has the following advantages and effects: according to the mechanical interlocking structure of the switch cabinet, the clamping position of the installation drawer can be realized through the clamping position component, so that the installation drawer can be positioned and clamped at a required position; through setting up stop part, can make the installation drawer can pull out and certain angle of downward sloping, it is more convenient right the inside electrical components of installation drawer carry out inspection operation.
Drawings
Fig. 1 is a schematic structural view of a mounting drawer and a clamping component of a switch cabinet according to an embodiment of the invention;
fig. 2 is a schematic view of an internal structure of a mechanical interlocking structure of a switch cabinet according to an embodiment of the present invention after a cabinet body pulls out a mounting drawer;
fig. 3 is a schematic structural diagram of a cabinet body of a mechanical interlocking structure of a switch cabinet according to an embodiment of the invention;
fig. 4 is a partially enlarged schematic view of the interior of the cabinet body of the mechanical interlocking structure of the switch cabinet according to the embodiment of the invention;
fig. 5 is a schematic structural diagram of a limiting part of a cabinet body of a mechanical interlocking structure of a switch cabinet according to an embodiment of the invention.
Description of reference numerals:
1-cabinet body; 2, mounting a drawer; 3-a concave groove; 4-limiting holes; 5-arc-shaped strip holes; 6, installing two sides of the drawer; 7-a circular hole; 8-a blocking gear; 9-rotating rod; 10-a limit ball; 11-a limit bump; 12-a telescopic shaft; 13-a main bevel gear; 14-bevel pinion gear; 15-a first transmission shaft; 16-a transmission shaft II; 17-fixed gear; 18-an upper track; 19-lower track; 20-gear mouth; 21-a limiting ball port; 22-telescopic shaft hole; 23-card strip.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
As shown in fig. 1, the mechanical interlocking structure of the switch cabinet comprises a cabinet body 1, a mounting drawer 2, the installation drawer 2 is provided with power devices such as a circuit breaker, an isolating switch and the like, the installation drawer 2 is connected with the cabinet body 1 in a sliding way, both sides of the mounting drawer 2 are provided with horizontal concave grooves 3, the concave grooves 3 are inwards concave relative to both sides 6 of the mounting drawer, both concave grooves 3 are provided with a row of limiting holes 4 and arc-shaped strip holes 5, the arc-shaped strip hole 5 is arranged at the end close to the inner side of the concave groove 3, namely the side close to the inner side of the cabinet body 1 and far away from the opening, the end close to the inner side on the two sides of the installation drawer 2 is also provided with a round hole 7, in order to adapt to the length of the arc-shaped strip holes 5, the width of the concave groove where the arc-shaped strip holes 5 are located is larger than that of the concave groove where the limiting holes 4 are located, and the round holes 7 are arranged on two sides 6 of the mounting drawer; a clamping part and a limiting part are arranged inside one of the two sides of the cabinet body 1, and the clamping part comprises a clamping gear 8, a bevel gear transmission mechanism and a fixed gear 17; inside screens gear 8 and the spacing part of including of opposite side of cabinet body 1's both sides, the tooth of screens gear 8 inserts in spacing downthehole 4, spacing part includes rotary rod 9, spacing ball 10, spacing lug 11 and telescopic shaft 12, spacing ball 10 and spacing lug 11 link firmly respectively the both ends of rotary rod 9, spacing lug 11 with telescopic shaft 12's one end butt, rotary rod 9 can be rotatory around self center, telescopic shaft 12 is scalable to be inserted in round hole 7.
The bevel gear transmission mechanism comprises a main bevel gear 13 and a secondary bevel gear 14 which are meshed with each other, and further comprises a first transmission shaft 15 and a second transmission shaft 16. The first transmission shaft 15 and the second transmission shaft 16 are fixed in place to rotate. The bevel gear transmission mechanism can convert the rotation in the vertical direction into the rotation in the horizontal direction.
One end of the first transmission shaft 15 is fixedly connected with the middle part of the clamping gear 8, the other end of the first transmission shaft is fixedly connected with the middle part of the main bevel gear 13, one end of the second transmission shaft 16 is fixedly connected with the middle part of the auxiliary bevel gear 14, and the other end of the second transmission shaft is fixedly connected with the middle part of the fixed gear 17. When the drawer 2 is installed in a push-and-pull mode, the clamping gear 8 rotates along with the push-and-pull mode, the first transmission shaft 15 drives the main bevel gear 13 to rotate, the auxiliary bevel gear 14 rotates, and finally the fixed gear 17 rotates.
The screens gear 8 protrusion the both sides internal surface of cabinet body 1 and its dogtooth card are gone into in the spacing hole 4 of installation drawer 2. When the installation drawer 2 is pulled, the clamping gear 8 rotates, and the convex teeth of the clamping gear are sequentially inserted into the limiting holes 4 and then pulled out.
The fixed gear 17 is provided on the side of the opening of the cabinet body 1. The fixed gear 17 can smoothly rotate on the side of the opening of the cabinet body 1.
A clamping strip hole is further formed in the position, close to the fixed gear 17, of the side edge of the opening of the cabinet body 1. The fixed gear 17 covers a part of the clip hole.
A clamping bar 23 is slidably disposed in the clamping bar hole, and the clamping bar 23 can slide towards the direction of the fixed gear 17 and is inserted between teeth of the fixed gear 17 to fix the fixed gear 17 against rotation. Realize the screens of fixed gear is fixed.
The inner surfaces of two sides of the cabinet body 1 are provided with an upper rail 18 and a lower rail 19, and the mounting drawer 2 slides between the upper rail 18 and the lower rail 19. The end of the upper rail 18 close to the cabinet body opening is an arc structure protruding upwards, so that when the installation drawer 2 rotates, the inner corner of the installation drawer 2 cannot be clamped. The end of the lower rail adjacent the cabinet body opening is downwardly inclined to be downwardly inclined against the downwardly inclined rail of the lower rail when the mounting drawer 2 is pulled out.
Go up between track 18 and the lower track 19 and be close to cabinet body 1 opening part and be equipped with gear mouth 20, spacing ball mouth 21 and flexible shaft hole 22, partly of screens gear 8, partly of spacing ball 10 are followed respectively gear mouth 20, spacing ball mouth 21 protrusion the internal surface of the both sides of cabinet body 1, telescopic shaft 12 can be followed flexible shaft hole 22 stretches out. When the two sides 6 of the mounting drawer push the limiting balls 10 into the side surface of the cabinet body 1, the telescopic shaft 12 is pushed out and extends into the round hole 7. The installation drawer 2 can swing up and down around the telescopic shaft 12.
The arc-shaped strip holes 5 are arranged on the concave groove 3, the length of the end, close to the inner side, of the concave groove is longer, the arc shape of the arc-shaped strip holes protrudes outwards, and when the installation drawer 2 swings up and down around the telescopic shaft 12, the convex teeth of the clamping gear 8 can move in the arc-shaped strip holes 5, so that the clamping gear 8 cannot be clamped.
And the bottom of the mounting drawer 2 is provided with a roller. The rollers can slide on the lower rail 19. The installation drawer 2 can slide more smoothly on the rail by the arranged rollers.
The working principle is as follows: when the installation drawer 2 is pulled, the clamping gear 8 and the fixed gear 17 rotate along with the rotation, and when the installation drawer 2 is pulled out to a required position, the clamping bar 23 is slid to fix the fixed gear 17, so that the installation drawer 2 can be clamped at the required position; when circuit components in the installation drawer 2 need to be detected, the installation drawer 2 is pulled to the end, the telescopic shaft 12 extends into the round hole 7, and then the installation drawer 2 can swing up and down around the telescopic shaft 12.
In summary, according to the mechanical interlocking structure of the switch cabinet, the clamping position of the installation drawer can be realized through the clamping position component, so that the installation drawer can be positioned and clamped at a required position; through setting up stop part, can make the installation drawer can pull out and certain angle of downward sloping, it is more convenient right the inside electrical components of installation drawer carry out inspection operation.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a mechanical interlocking structure of cubical switchboard which characterized in that: the safe cabinet comprises a cabinet body (1) and installation drawers (2), wherein the installation drawers (2) are connected with the cabinet body (1) in a sliding manner, horizontal concave grooves (3) are formed in two sides of the installation drawers (2), a row of limiting holes (4) and a row of arc-shaped strip holes (5) are formed in the two concave grooves (3), the arc-shaped strip holes are formed in the concave grooves (3) and close to the inner side end, and round holes (7) are formed in the two sides of the installation drawers (2) and close to the inner side end; a clamping part and a limiting part are arranged inside one of the two sides of the cabinet body (1), and the clamping part comprises a clamping gear (8), a conical gear transmission mechanism and a fixed gear (17); the cabinet is characterized in that a clamping gear (8) and a limiting component are arranged inside the other side of the two sides of the cabinet body (1), convex teeth of the clamping gear (8) are inserted into the limiting holes (4) and the arc-shaped strip holes (5), the limiting component comprises a rotary rod (9), a limiting ball (10), a limiting convex block (11) and a telescopic shaft (12), the limiting ball (10) and the limiting convex block (11) are fixedly connected to the two ends of the rotary rod (9) respectively, the limiting convex block (11) is abutted to one end of the telescopic shaft (12), the rotary rod (9) can rotate around the center of the rotary rod, and the telescopic shaft (12) is inserted into the round hole (7) in a telescopic mode; the fixed gear (17) is arranged on the side edge of the opening of the cabinet body (1); a clamping strip hole is further formed in the position, close to the fixed gear (17), of the side edge of the opening of the cabinet body (1); and a clamping strip (23) is arranged in the clamping strip hole in a sliding manner, the clamping strip (23) can slide towards the direction of the fixed gear (17) and is inserted between teeth of the fixed gear (17), and the fixed gear (17) is fixed so as not to rotate.
2. A mechanical interlocking structure of a switch cabinet according to claim 1, characterized in that: the bevel gear transmission mechanism comprises a main bevel gear (13) and an auxiliary bevel gear (14) which are meshed with each other, and further comprises a first transmission shaft (15) and a second transmission shaft (16).
3. A mechanical interlocking structure of a switch cabinet according to claim 2, characterized in that: one end of the first transmission shaft (15) is fixedly connected with the middle part of the clamping gear (8), the other end of the first transmission shaft is fixedly connected with the middle part of the main bevel gear (13), one end of the second transmission shaft (16) is fixedly connected with the middle part of the auxiliary bevel gear (14), and the other end of the second transmission shaft is fixedly connected with the middle part of the fixed gear (17).
4. A mechanical interlocking structure of a switch cabinet according to claim 3, characterized in that: the clamping gears (8) protrude out of the inner surfaces of the two sides of the cabinet body (1) and are clamped into the limiting holes (4) of the installation drawer (2).
5. A mechanical interlocking structure of a switch cabinet according to claim 1, characterized in that: the inner surfaces of two sides of the cabinet body (1) are provided with an upper rail (18) and a lower rail (19), and the installation drawer (2) slides between the upper rail (18) and the lower rail (19).
6. A mechanical interlocking structure of a switch cabinet according to claim 5, characterized in that: go up between track (18) and lower track (19) and be close to cabinet body (1) opening part and be equipped with gear mouth (20), spacing ball mouth (21) and flexible shaft hole (22), partly of screens gear (8), partly follow of spacing ball (10) respectively gear mouth (20), spacing ball mouth (21) protrusion the internal surface of the both sides of cabinet body (1), telescopic shaft (12) can be followed flexible shaft hole (22) stretch out.
7. The mechanical interlocking structure of the switch cabinet as claimed in claim 6, characterized in that: and the bottom of the mounting drawer (2) is provided with a roller which can slide on the lower rail (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811072525.0A CN109244921B (en) | 2018-09-14 | 2018-09-14 | Mechanical interlocking structure of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811072525.0A CN109244921B (en) | 2018-09-14 | 2018-09-14 | Mechanical interlocking structure of switch cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109244921A CN109244921A (en) | 2019-01-18 |
| CN109244921B true CN109244921B (en) | 2020-10-02 |
Family
ID=65058423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811072525.0A Active CN109244921B (en) | 2018-09-14 | 2018-09-14 | Mechanical interlocking structure of switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109244921B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4035082A1 (en) * | 1990-11-05 | 1992-05-07 | Ceag Licht & Strom | Switch cabinet for LV switching appts. - uses wheeled retractable module forwards secured by clip when tipped forwards |
| JP2006149043A (en) * | 2004-11-18 | 2006-06-08 | Terasaki Electric Co Ltd | Interlock device of distribution panel |
| JP2013013326A (en) * | 2012-10-19 | 2013-01-17 | Fuji Electric Co Ltd | Switchboard |
| CN207409915U (en) * | 2017-11-28 | 2018-05-25 | 桐乡市华宇电力设备有限公司 | A kind of GCS low voltage drawing-out switching carbinets |
| CN207666273U (en) * | 2017-07-08 | 2018-07-31 | 北京求实工程管理有限公司 | Convenient file cabinet |
| CN207782263U (en) * | 2018-01-05 | 2018-08-28 | 中山市明阳电器有限公司 | Dropproof drawer applied to rail traffic low pressure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100591242C (en) * | 2006-12-15 | 2010-02-24 | 鸿富锦精密工业（深圳）有限公司 | Slideway device |
| CN204499945U (en) * | 2014-12-29 | 2015-07-29 | 无锡鼎闰精密机械有限公司 | Novel drug cabinet drawer and medicine-chest structure thereof |
| CN104953500A (en) * | 2015-07-16 | 2015-09-30 | 江苏华鹏智能电气股份有限公司 | Primary contact propulsion device for low-voltage switchgear |
| CN106152695B (en) * | 2016-07-15 | 2019-03-08 | 青岛海尔股份有限公司 | Slide mechanism of drawer and refrigerator with it |
-
2018
- 2018-09-14 CN CN201811072525.0A patent/CN109244921B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4035082A1 (en) * | 1990-11-05 | 1992-05-07 | Ceag Licht & Strom | Switch cabinet for LV switching appts. - uses wheeled retractable module forwards secured by clip when tipped forwards |
| JP2006149043A (en) * | 2004-11-18 | 2006-06-08 | Terasaki Electric Co Ltd | Interlock device of distribution panel |
| JP2013013326A (en) * | 2012-10-19 | 2013-01-17 | Fuji Electric Co Ltd | Switchboard |
| CN207666273U (en) * | 2017-07-08 | 2018-07-31 | 北京求实工程管理有限公司 | Convenient file cabinet |
| CN207409915U (en) * | 2017-11-28 | 2018-05-25 | 桐乡市华宇电力设备有限公司 | A kind of GCS low voltage drawing-out switching carbinets |
| CN207782263U (en) * | 2018-01-05 | 2018-08-28 | 中山市明阳电器有限公司 | Dropproof drawer applied to rail traffic low pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109244921A (en) | 2019-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MY150863A (en) | Apparatus for automatic recovery of an earth leakage circuit breaker | |
| CN109244921B (en) | Mechanical interlocking structure of switch cabinet | |
| CN110137047A (en) | A kind of breaker automatic switching-on device | |
| CN201278326Y (en) | Manual operation interlocking apparatus for high-voltage switch three-position mechanism | |
| CN109244922B (en) | Push-and-pull structure of switch cabinet | |
| CN207320606U (en) | A kind of power distribution cabinet with automatic overhead door | |
| CN207966794U (en) | The mechanical interlock mechanism of high-tension switch cabinet | |
| CN109167273B (en) | Drawer push-and-pull structure of switch cabinet | |
| CN102882138B (en) | Movable door mechanism of high-tension switch cabinet | |
| CN110428997A (en) | Disconnecting switch | |
| CN103161363A (en) | Door lock mechanism | |
| CN216921868U (en) | Shield door base with insulating property | |
| CN202872233U (en) | High-voltage vacuum circuit breaker chassis interlocking device | |
| CN204905139U (en) | Solid insulated cabinets no. 5 prevents interlocking device | |
| CN211038227U (en) | Cabinet door rotating structure of high-low voltage switch cabinet | |
| CN104527682A (en) | Rail car and device door thereof | |
| CN114783803A (en) | Interlocking device for grounding switch of metal-enclosed switchgear and cable chamber door | |
| CN112072506A (en) | Door connecting mechanism of alternating current power distribution cabinet and application of door connecting mechanism | |
| CN113972567A (en) | High-voltage power distribution cabinet with cable constraint function | |
| CN206293809U (en) | A kind of low-voltage switch cabinet of drawer propulsive mechanism and low-voltage switch cabinet of drawer | |
| CN101764367A (en) | Safety isolating device of isolating valve of drawout breaker | |
| CN204651234U (en) | A kind of fixed five-prevention operation mechanism of QH2 type mesohigh | |
| CN206962280U (en) | A kind of protector on high-voltage complete switch equipment manual knob switch | |
| CN207251061U (en) | Switch cabinet shutter control device | |
| CN209981769U (en) | Novel valve mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |