CN111627739A - Anti-misoperation device for separating gate of high-low voltage power distribution cabinet - Google Patents
Anti-misoperation device for separating gate of high-low voltage power distribution cabinet Download PDFInfo
- Publication number
- CN111627739A CN111627739A CN202010513465.2A CN202010513465A CN111627739A CN 111627739 A CN111627739 A CN 111627739A CN 202010513465 A CN202010513465 A CN 202010513465A CN 111627739 A CN111627739 A CN 111627739A
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- CN
- China
- Prior art keywords
- protective cover
- clamping
- fixed
- separating gate
- protective
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/02—Details
- H01H21/04—Cases; Covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/02—Details
- H01H21/18—Movable parts; Contacts mounted thereon
- H01H21/22—Operating parts, e.g. handle
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- 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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- 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
- H02B1/54—Anti-seismic devices or installations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses an anti-misoperation device for a disconnecting switch of a high-low voltage power distribution cabinet, and relates to the technical field of supporting facilities of power equipment. The invention comprises a protective cover, a separating gate and a protective shell, wherein ventilation openings are formed on the opposite surface of one protective cover; a clamping assembly is fixed on the opposite inner wall of the protective cover; the other end of the clamping component is clamped with the separating gate; a first clamping groove is formed in one surface of the protective cover; a plurality of first supporting blocks are fixed on one surface of the protective cover; a first through hole is formed in one surface of the first supporting block; a plurality of sliding chutes are circularly arranged on the inner wall of the first through hole; the first through hole is rotatably connected with the protective shell through a round shaft; a switch is arranged on one surface of the separating gate; an indicator light is fixed on one surface of the separating gate; the opposite surfaces of the separating gate are provided with second clamping grooves. The invention prevents the separating gate from being touched by mistake through the protective cover and the protective shell, adopts the clamping component to prevent the protective cover from falling, and has the advantages of safety and reliability.
Description
The patent application is divisional application, the application number of a parent application is 201811147321.9, and the application date of the parent application is 09 and 29 days in 2018.
Technical Field
The invention belongs to the technical field of supporting facilities of power equipment, and particularly relates to an anti-misoperation device for a disconnecting switch of a high-low voltage power distribution cabinet.
Background
The high-low voltage power distribution cabinet is the power distribution equipment used for distributing, controlling, metering and connecting cables in a power supply system, a general power supply station and a substation use high-voltage switch cabinets, then the low-voltage power distribution cabinet is led out from a transformer step-down low-voltage side, the low-voltage power distribution cabinet is a distribution board for each power consumption, a control box and a switch box are equipment of the power distribution device, wherein the equipment integrally assembles a plurality of switches, circuit breakers, fuses, buttons, indicating lamps, instruments, electric wires and other protection devices into a whole to meet the design function requirements.
Common high-low voltage power distribution cabinets are provided with disconnecting switches, and the disconnecting switches are generally manually operated in order to rapidly cut off a power supply in an emergency. But the separating brake all directly sets up externally usually, does not adopt any protection device, and this makes people when carrying out other operations to the switch board, and the separating brake is touched to easy mistake to cause unnecessary influence, and adopt simple protection device to the separating brake, make protection device itself drop when the emergence accident touches easily.
In the prior art, the prior art personnel set up the casing or the cover body with the separating brake outside and come to protect the plug-in strip, avoid the outside to bump to the plug-in strip mistake and lead to unexpected opening and shutting, but because switch or switch are mostly at the internal fixed mounting of cabinet, therefore, the safety cover that additionally adds generally can not be fixed dead and install on the cabinet body, this inconvenience when can bring other parts operation or overhaul, consequently, switch also can be touched by mistake when the casing or the cover body drops, or contact this casing rear cover body when carrying out other maintenance or overhauls, or when needing temporarily to dismantle the casing or the cover body, also can lead to the mistake to bump switch because of misoperation or error, consequently, the interim protection casing among the prior art has inevitable drawback, and then influences the power consumption operation safety.
Disclosure of Invention
The invention aims to provide an anti-misoperation device for a disconnecting switch of a high-low voltage power distribution cabinet.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a false touch prevention device for a separating gate of a high-low voltage power distribution cabinet, which comprises a protective cover, the separating gate and a protective shell,
the opposite surfaces of the protective covers are provided with ventilation openings; at least two clamping assemblies are fixed on the inner wall of the protective cover; the other end of the clamping assembly is clamped with one surface of the separating gate, and the clamping assembly is used for damping and fixing the protective cover; a first clamping groove is formed in one surface of the protective cover; two first supporting blocks are fixed on one surface of the protective cover; a first through hole is formed in one surface of the first supporting block; a plurality of sliding grooves are arranged on the inner wall of the first through hole in a circular manner; the first through hole is rotatably connected with the protective shell through a round shaft;
a switch is arranged on one surface of the separating gate; an indicator light is fixed on one surface of the separating gate; and second clamping grooves are formed in the opposite surfaces of the first separating gate.
Further, the protection casing is the rectangle structure.
Furthermore, the protective casing is a transparent protective casing and is used for observing the state of the separating gate at any time.
Furthermore, a first clamping block is fixed on one surface of the protective shell; a second supporting block is fixed on one surface of the protective shell; a second through hole is formed in one surface of the second supporting block; and one inner wall of the second through hole is fixedly connected with the round shaft.
Further, the clamping assembly comprises two springs, the springs are used for damping the protective cover and are matched with the clamping blocks to fix the protective cover; one end of the spring is fixedly connected with the inner wall of the protective cover; a clamping block is fixed at the other end of the spring; a second clamping block is fixed on one surface of the clamping block; and one surface of the second clamping block is clamped with one inner wall of the second clamping groove, and the second clamping block is matched with the second clamping groove to further fix the protective cover so as to prevent the protective cover from falling.
Furthermore, a plurality of sliding teeth are fixedly arranged on the opposite surfaces of the first round shaft in a round shape; the surface of the sliding tooth is rotationally connected with the inner wall of the sliding groove, the sliding tooth is matched with the sliding groove to enable the protective shell to reset automatically when being pulled up, and the protective shell is prevented from being held by hands when being opened.
The invention has the following beneficial effects:
1. the invention protects the separating gate through the functions of the protective cover and the protective shell, avoids mistakenly touching the separating gate during working and has the advantages of safety and reliability.
2. The invention can carry out shock absorption and fixation on the protective cover through the action of the clamping component, and prevent the protective cover from being touched by mistake to cause the protective cover to fall off in work, because the protective cover is touched by mistake due to the shock absorption action of the spring and the movement return action of the chute, the invention can effectively avoid that the shell can not reset in time because of no buffer connection and falls off in time to cause the false touch of the switch of the shell, and also can prevent the switch of the switch from being touched by mistake due to improper operation or error when other maintenance or overhaul is carried out or the shell or the cover body needs to be temporarily disassembled, thereby having the advantage of good stability. The design of the sliding clamping connection is convenient for the temporary disassembly and assembly of operators, and the operators can move within a certain range after fixing, so that the situation that the operators touch the shell by mistake and the operators cannot fall off and the switch knife switch cannot be opened or closed by mistake is achieved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an anti-collision device for a disconnecting switch of a high-low voltage power distribution cabinet according to the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic structural diagram of a separating gate;
FIG. 4 is a schematic structural view of a shield;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a schematic structural view of the protective housing;
FIG. 7 is a schematic view of the clamp assembly;
FIG. 8 is a schematic view of a circular shaft;
in the drawings, the components represented by the respective reference numerals are listed below:
1-protective cover, 2-separating gate, 3-protective shell, 4-ventilation opening, 5-clamping component, 6-first clamping groove, 7-switch, 8-first supporting block, 9-circular shaft, 201-indicator light, 202-second clamping groove, 301-first clamping block, 302-second supporting block, 303-second through hole, 501-spring, 502-clamping block, 503-second clamping block, 801-first through hole, 802-sliding groove and 901-sliding tooth.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the invention is a device for preventing a separation gate of a high-low voltage power distribution cabinet from being touched by mistake, comprising a protective cover 1, a separation gate 2 and a protective shell 3, wherein ventilation openings 4 are formed on one opposite surface of the protective cover 1; at least two clamping components 5 are fixed on the inner wall of the protective cover 1; the other end of the clamping component 5 is clamped with one surface of the separating gate 2, and the clamping component 5 is used for damping and fixing the protective cover 1; a first clamping groove 6 is formed in one surface of the protective cover 1; two first supporting blocks 8 are fixed on one surface of the protective cover 1; a first through hole 801 is formed in one surface of the first supporting block 8; a chute 802 is circularly arranged on one inner wall of the first through hole 801; the first through hole 801 is rotatably connected with the protective shell 9 through a circular shaft 9;
a switch 7 is arranged on one surface of the separating gate 2; an indicator light 201 is fixed on one surface of the separating gate 2; an opposite surface of the separating gate 2 is provided with a second slot 202.
As shown in fig. 2 and 4, the protective cover 1 has a rectangular structure; the protective shell 3 is a transparent protective shell and is used for observing the state of the separating gate 2 at any time.
As shown in fig. 6, a first latch 301 is fixed on one surface of the protective housing 3; a second supporting block 302 is fixed on one surface of the protective shell 3; a second through hole 303 is formed in one surface of the second supporting block 302; an inner wall of the second through hole 303 is fixedly connected with the circular shaft 9.
As shown in fig. 7, the clamping assembly 5 includes two springs 501, the springs 501 absorb shock for the shield 1, and cooperate with the clamping blocks 502 to fix the shield 1; one end of the spring 501 is fixedly connected with one inner wall of the protective cover 1; the other end of the spring 501 is fixed with a clamping block 502; a second clamping block 503 is fixed on one surface of the clamping block 502; a surface of the second block 503 is clamped to an inner wall of the second clamping groove 202, and the second block 503 is matched with the second clamping groove 202 to further fix the protection cover 1, so as to prevent the protection cover 1 from falling. After the clamping is firm, the second clamping groove (202) can be used for the second clamping block (503) to slide along the length direction of the second clamping groove (202), so that the movable range is further provided, and the movable return stroke during the contact is ensured.
As shown in fig. 8, sliding teeth 901 are fixed on the opposite surfaces of the circular shaft 9 in a circular arrangement; one surface of the sliding tooth 901 is rotatably connected with one inner wall of the sliding groove 802, and the sliding tooth 901 is matched with the sliding groove 802 to enable the protective shell 3 to reset automatically when being pulled up, so that the protective shell 3 is prevented from being held by hands when being opened.
One specific application of this embodiment is: firstly, the protective cover 1 is sleeved on the surface of the separating gate 2, the protective cover 1 is fixed through the spring 501 and the clamping block 502, meanwhile, the protective cover 1 is fixed through the second clamping block 503 and the second clamping groove 202, the protective shell 3 is pressed down to enable the first clamping block 301 to be clamped with the first clamping groove 6, and the separating gate 2 is prevented from being touched by mistake; if the protective cover 1 needs to be taken down, the protective cover 1 is directly pulled out, and the operation is convenient and fast.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (1)
1. The utility model provides a high-low voltage distribution cabinet separating brake prevent mistake and bump device, includes protection casing (1), separating brake (2) and protecting sheathing (3), its characterized in that: one opposite surface of the protective cover (1) is provided with a ventilation opening (4); four clamping assemblies (5) are uniformly and fixedly arranged on the peripheral inner wall of the protective cover (1); one end of the clamping component (5) is fixedly connected with the inner wall of the protective cover (1), the other end of the clamping component is clamped with the side surface of the separating gate (2), and second clamping grooves (202) detachably clamped with the clamping component (5) are formed in the side surface of the separating gate (2); a first clamping groove (6) is formed in one surface of the protective cover (1); a plurality of first supporting blocks (8) are fixed on one surface of the protective cover (1); a first through hole (801) is formed in one surface of the first supporting block (8); a plurality of sliding grooves (802) are circularly arranged on one inner wall of the first through hole (801); the first through hole (801) is rotatably connected with the protective shell (3) through a circular shaft (9); a switch (7) is arranged on one surface of the separating gate (2); an indicator lamp (201) is fixed on one surface of the separating gate (2); the clamping assembly (5) comprises two springs (501), one end of each spring (501) is fixedly connected with the inner wall of the protective cover (1), and a clamping block (502) is fixed at the other end of each spring (501); the spring (501) is used for damping the protective cover (1) and is matched with the clamping block (502) to fix the protective cover (1); a second clamping block (503) is fixed on one surface of the clamping block (502); the second clamping block (503) is clamped with the second clamping groove (202); after the clamping is firm, the second clamping groove (202) is used for the second clamping block (503) to slide along the length direction of the second clamping groove (202), so that the movable range is further provided, and the movable return stroke during the contact is ensured; a first clamping block (301) is fixed on one surface of the protective shell (3); a second supporting block (302) is fixed on one surface of the protective shell (3); a second through hole (303) is formed in one surface of the second supporting block (302); one inner wall of the second through hole (303) is fixedly connected with the round shaft (9); a plurality of sliding teeth (901) are fixed on the opposite surface of the circular shaft (9) in a circular arrangement; one surface of the sliding tooth (901) is rotatably connected with one inner wall of the sliding groove (802), the sliding tooth (901) is matched with the sliding groove (802) to enable the protective shell (3) to reset automatically when being pulled up, the protective cover (1) is sleeved on the surface of the separating gate (2), the protective cover (1) is fixed through the spring (501) and the clamping block (502), meanwhile, the protective cover (1) is fixed through the second clamping block (503) and the second clamping groove (202), the first clamping block (301) is clamped with the first clamping groove (6) by pressing down the protective shell (3), and the separating gate (2) is prevented from being touched by mistake; if the protective cover (1) needs to be taken down, the protective cover (1) is directly pulled out, the protective cover (1) is of a rectangular structure, and the protective shell (3) is a transparent protective shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010513465.2A CN111627739B (en) | 2018-09-29 | 2018-09-29 | Anti-misoperation device for separating gate of high-low voltage power distribution cabinet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010513465.2A CN111627739B (en) | 2018-09-29 | 2018-09-29 | Anti-misoperation device for separating gate of high-low voltage power distribution cabinet |
| CN201811147321.9A CN109192590B (en) | 2018-09-29 | 2018-09-29 | Anti-misoperation protection device for disconnecting gate of high-low voltage power distribution cabinet |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811147321.9A Division CN109192590B (en) | 2018-09-29 | 2018-09-29 | Anti-misoperation protection device for disconnecting gate of high-low voltage power distribution cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111627739A true CN111627739A (en) | 2020-09-04 |
| CN111627739B CN111627739B (en) | 2022-04-26 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811147321.9A Active CN109192590B (en) | 2018-09-29 | 2018-09-29 | Anti-misoperation protection device for disconnecting gate of high-low voltage power distribution cabinet |
| CN202010513465.2A Active CN111627739B (en) | 2018-09-29 | 2018-09-29 | Anti-misoperation device for separating gate of high-low voltage power distribution cabinet |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811147321.9A Active CN109192590B (en) | 2018-09-29 | 2018-09-29 | Anti-misoperation protection device for disconnecting gate of high-low voltage power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109192590B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718668A (en) * | 2022-04-01 | 2022-07-08 | 华能(大连)热电有限责任公司 | Brake handle protective cover and manufacturing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536727A (en) * | 2019-09-23 | 2021-03-23 | 青岛永辉玛钢有限公司 | Crawler-type shot blasting machine for galvanizing workshop |
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| CN103928248A (en) * | 2014-04-02 | 2014-07-16 | 宝鸡市航宇光电显示技术开发有限责任公司 | Anti-misoperation protector |
| CN204102759U (en) * | 2014-07-28 | 2015-01-14 | 苏州工业园区清源华衍水务有限公司 | A kind of press button protecting device |
| CN205920892U (en) * | 2016-06-30 | 2017-02-01 | 邦彦技术股份有限公司 | Switch safety cover and equipment |
| CN205984700U (en) * | 2016-08-05 | 2017-02-22 | 四川汉舟电气股份有限公司 | Safety type circuit breaker |
| CN107946947A (en) * | 2018-01-10 | 2018-04-20 | 伍文谦 | A kind of shockproof high voltage power distributing cabinet |
| CN108336668A (en) * | 2018-04-03 | 2018-07-27 | 湖州嘉和电脑技术服务有限公司 | A kind of concealed distribution box of family's false-touch prevention |
| CN108550479A (en) * | 2018-07-11 | 2018-09-18 | 翁君晌 | It is a kind of with shock-absorbing function close to switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206003707U (en) * | 2016-08-30 | 2017-03-08 | 富隆电气有限公司 | Residual current operated protective circuit breaker |
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2018
- 2018-09-29 CN CN201811147321.9A patent/CN109192590B/en active Active
- 2018-09-29 CN CN202010513465.2A patent/CN111627739B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928248A (en) * | 2014-04-02 | 2014-07-16 | 宝鸡市航宇光电显示技术开发有限责任公司 | Anti-misoperation protector |
| CN204102759U (en) * | 2014-07-28 | 2015-01-14 | 苏州工业园区清源华衍水务有限公司 | A kind of press button protecting device |
| CN205920892U (en) * | 2016-06-30 | 2017-02-01 | 邦彦技术股份有限公司 | Switch safety cover and equipment |
| CN205984700U (en) * | 2016-08-05 | 2017-02-22 | 四川汉舟电气股份有限公司 | Safety type circuit breaker |
| CN107946947A (en) * | 2018-01-10 | 2018-04-20 | 伍文谦 | A kind of shockproof high voltage power distributing cabinet |
| CN108336668A (en) * | 2018-04-03 | 2018-07-27 | 湖州嘉和电脑技术服务有限公司 | A kind of concealed distribution box of family's false-touch prevention |
| CN108550479A (en) * | 2018-07-11 | 2018-09-18 | 翁君晌 | It is a kind of with shock-absorbing function close to switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718668A (en) * | 2022-04-01 | 2022-07-08 | 华能(大连)热电有限责任公司 | Brake handle protective cover and manufacturing method thereof |
| CN114718668B (en) * | 2022-04-01 | 2024-05-28 | 华能(大连)热电有限责任公司 | Protective cover for brake handle and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109192590A (en) | 2019-01-11 |
| CN109192590B (en) | 2020-07-28 |
| CN111627739B (en) | 2022-04-26 |
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