CN112354713A - Spray gun coating device - Google Patents
Spray gun coating device Download PDFInfo
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- CN112354713A CN112354713A CN202011200236.1A CN202011200236A CN112354713A CN 112354713 A CN112354713 A CN 112354713A CN 202011200236 A CN202011200236 A CN 202011200236A CN 112354713 A CN112354713 A CN 112354713A
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- spray gun
- syringe
- bearing
- base
- coating device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
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- Nozzles (AREA)
Abstract
本发明公开了一种喷枪涂料装置，包括基座、安装在所述基座上的喷枪本体、安装在所述基座上的卡座、安装在所述卡座上的注射器、安装在所述基座上的直线运动驱动器、安装在所述直线运动驱动器上并用于驱动所述注射器的芯杆移动的挤压件；所述卡座上设有用于所述注射器的针筒卡入的凹槽，所述注射器的针筒具有凸缘，所述凸缘抵靠在所述卡座的外侧，所述喷枪本体的进夜口与所述注射器的注射口连通，所述凹槽的内壁上设有第一缺口和第二缺口，所述第一缺口和所述第二缺口以所述注射器的针筒的轴线为中心对称分布。本发明可以实现自动化喷涂的同时能够快速更换涂料，属于喷枪涂料机构的技术领域。
The invention discloses a spray gun coating device, comprising a base, a spray gun body installed on the base, a card seat installed on the base, a syringe installed on the card seat, A linear motion driver on the base, an extrusion piece mounted on the linear motion driver and used to drive the movement of the plunger of the syringe; the socket is provided with a groove for the barrel of the syringe to be snapped into , the syringe of the syringe has a flange, the flange abuts on the outside of the card seat, the night inlet of the spray gun body is communicated with the injection port of the syringe, and the inner wall of the groove is provided with There are first gaps and second gaps, and the first gaps and the second gaps are symmetrically distributed with the axis of the syringe barrel as the center. The invention can realize automatic spraying and can quickly replace the paint, and belongs to the technical field of spray gun paint mechanisms.
Description
Technical Field
The invention relates to the technical field of spray gun coating mechanisms, in particular to a spray gun coating device.
Background
In the traditional coating, the flows of manual weighing, configuration, dispersion and the like are required in the formula preparation process, and each performance of the coating is detected by manually preparing a film after the coating formula is prepared. The burdening and sample preparation processes have the defects of energy conservation, environmental protection and high efficiency. Especially in the process of laboratory research and development sample, need consume too much manpower and materials each time, spray gun and coating pipeline need be washd when current spraying equipment is changing the material sample of spouting moreover, are connected to the spray gun on the storage bucket that corresponds again, and the coating quantity is big, and research and development process sample is general less, is not suitable for the small-dose research and development to make a sample. The process is very complex and cannot meet the requirements of intelligent manufacturing.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the invention provides a spray gun coating device, which can realize automatic spraying and can quickly replace coating.
In order to achieve the purpose, the invention adopts the following technical scheme:
a spray gun coating device comprises a base, a spray gun body arranged on the base, a clamping seat arranged on the base, an injector arranged on the clamping seat, a linear motion driver arranged on the base, and an extrusion piece arranged on the linear motion driver and used for driving a core rod of the injector to move;
the clamping seat is provided with a groove for clamping the needle cylinder of the injector, the needle cylinder of the injector is provided with a flange, the flange is abutted against the outer side of the clamping seat, and the night inlet of the spray gun body is communicated with the injection port of the injector.
Furthermore, the inner wall of the groove is provided with a first gap and a second gap, and the first gap and the second gap are symmetrically distributed by taking the axis of the syringe of the injector as the center.
Further, an injection hole channel for inserting a needle of the injector and a first liquid channel communicated with the injection hole are further arranged on the inner wall of the groove; a sealing plug is arranged between the injection hole and the first liquid channel, a needle head arranged at the injection hole of the injector penetrates through the sealing plug and extends into the first liquid channel, an adapter connected with the spray gun body is fixedly arranged on the clamping seat, a second liquid channel is arranged in the adapter, and a night inlet of the spray gun body is communicated with the first liquid channel through the second liquid channel.
Further, the spray gun coating device also comprises an infrared distance sensor arranged on the base; the extrusion piece is provided with a through hole, and rays of the infrared distance sensor penetrate through the through hole to irradiate on a core rod of the injector.
Further, the linear motion driver comprises a first support and a second support which are fixed on the base, a first synchronous pulley rotationally mounted on the first support, a second synchronous pulley rotationally mounted on the second support, a motor with an output end connected with the first and synchronous pulleys, a synchronous belt sleeved on the first synchronous pulley and the second synchronous pulley, and a driving block fixed on the synchronous belt; the compression member is secured to the drive block.
Further, the linear motion driver further comprises a first wheel shaft; first bearing and second bearing are installed to the rotary type on the first support, first bearing with be equipped with first mounting groove between the second bearing, the one end of first shaft is installed on the first bearing, the other end of first shaft is installed on the second bearing and with the output of motor is connected, first synchronous pulley is located in the first mounting groove and fixed mounting be in on the first shaft.
Further, the linear motion driver further comprises a second wheel shaft; the second support is rotatably provided with a third bearing and a fourth bearing, a second mounting groove is formed between the third bearing and the fourth bearing, one end of a second wheel shaft is mounted on the third bearing, the other end of the second wheel shaft is mounted on the fourth bearing, and a second synchronous belt wheel is located in the second mounting groove and fixedly mounted on the second wheel shaft.
Further, the linear motion driver further comprises a sleeper fixed on the base, a guide rail fixed on the sleeper, and a sliding block slidably mounted on the guide rail; the sliding blocks are fixed on the synchronous belt, and the sliding blocks and the driving blocks are symmetrically distributed on two sides of the synchronous belt.
Further, the spray gun coating device also comprises a photoelectric switch arranged on the base and a sensing piece which is fixed relative to the driving block and is used for blocking the emitted light of the photoelectric switch.
Further, the linear motion driver further comprises a dust cover; be equipped with the bar groove on the dust cover, the hold-in range is followed the bar groove stretches out, first support the second support first synchronous pulley the second synchronous pulley all is located in the dust cover, the drive block is located outside the dust cover.
Compared with the prior art, the invention has the beneficial effects that: the device utilizes the cavity of the needle cylinder of the injector to directly contain the film forming material, the injector is arranged on the clamping seat, the injector injects paint to the spray gun body under the drive of the linear motion driver, and the spray gun body realizes automatic discharging film making. In the use process, the coating with different formulas is replaced by replacing different injectors, so that the sample preparation is quickly replaced, manpower and material resources are saved, and the device is suitable for small-dose research and development sample preparation. The coating public pipeline of this device is few, the self-cleaning of being convenient for, and is swift convenient. This application can keep the spraying performance of the spray gun body self of each brand model, can change the spray gun body of each brand model at any time for spray gun coating device's application scope is wider. The device adopts a disposable injector, can realize quick replacement of the coating, can realize small-dose spraying, and is particularly suitable for spraying and proofing in a laboratory. The device can realize automatic syringe placement by manually placing the syringe or matching with a special mechanism or a robot and the like. The inside of spray gun body and first liquid passage and second liquid passage of this application are vacuum state under operating condition, can realize that the coating of minidose changes colors and automatic spraying automatically.
Drawings
FIG. 1 is a schematic view of the construction of a spray gun coating device.
FIG. 2 is a schematic view of the structure of the spray gun body, the cartridge and the injector.
Figure 3 is a cross-sectional view of the spray gun body, cartridge, and injector.
Fig. 4 is an enlarged view at a of fig. 3.
Fig. 5 is a schematic view of the structure of the linear motion actuator.
Fig. 6 is a schematic view of another view of the linear motion actuator.
Fig. 7 is a schematic view of the dust cover.
In the figure, 1 is a base, 2 is a spray gun body, 3 is a clamping base, 4 is an injector, 5 is a linear motion driver, 6 is an extrusion part, 7 is an adapter, 8 is an infrared distance sensor, 9 is a photoelectric switch, 10 is a sensing piece, 11 is a dust cover, 12 is a strip-shaped groove, 21 is a third liquid channel, 22 is a detection hole, 31 is a groove, 32 is a first notch, 33 is a second notch, 34 is an injection hole channel, 35 is a first liquid channel, 36 is a sealing plug, 41 is a syringe, 42 is a core rod, 43 is a needle, 44 is a flange, 50 is a motor, 51 is a first support, 52 is a second support, 53 is a first synchronous pulley, 54 is a second synchronous pulley, 55 is a synchronous belt, 56 is a driving block, 57 is a sleeper, 58 is a guide rail, 59 is a sliding block, 61 is a through hole, 71 is a second liquid channel, 111 is a first stopper, 112 is a second stopper, 113 is a shaft hole, reference numeral 510 denotes a first axle, 511 denotes a first bearing, 512 denotes a second bearing, 520 denotes a second axle, 521 denotes a third bearing, and 522 denotes a fourth bearing.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For convenience of description, the up-down direction described below corresponds to the up-down direction of fig. 1 itself, unless otherwise specified.
As shown in fig. 1 to 4, the present embodiment provides a spray gun coating device, which includes a base 1, a spray gun body 2 mounted on the base 1, a cartridge 3 mounted on the base 1, an injector 4 mounted on the cartridge 3, a linear motion driver 5 mounted on the base 1, and a pressing member 6 mounted on the linear motion driver 5 and used for driving a core rod 42 of the injector 4 to move; the spray gun body 2 can spray paint after atomizing, the needle cylinder 41 of the injector 4 is installed on the clamping seat 3 after being filled with paint, then the extrusion piece 6 is driven by the linear motion driver 5 to extrude the core rod 42 of the injector 4, the core rod 42 pushes the piston of the injector 4 to inject the paint in the needle cylinder 41 into the spray gun body 2, and finally the paint is sprayed out from the nozzle of the spray gun body 2.
The clamping seat 3 is provided with a groove 31 for clamping a needle cylinder 41 of the injector 4, the needle cylinder 41 of the injector 4 is provided with a flange, the flange is abutted against the outer side of the clamping seat 3, and a night inlet of the spray gun body 2 is communicated with an injection port of the injector 4. The linear motion driver 5 is vertically arranged, and the linear motion driver 5 drives the extrusion block to move up and down in the vertical direction. The clamping seat 3 is cylindrical, the groove 31 is formed in the circumferential side face of the clamping seat 3, an insertion hole communicated with the groove 31 is formed in the upper end face of the clamping seat 3, when the injector 4 is installed on the clamping seat 3, the needle cylinder 41 of the injector 4 moves in the horizontal direction and enters the groove 31 from the circumferential side face of the clamping seat 3, a flange is arranged on the circumferential side face of the upper end of the needle cylinder 41, after the needle cylinder 41 is clamped into the groove 31, the flange is located on the upper end face of the clamping seat 3 and is in contact with the upper end face of the clamping seat 3, and when the core rod 42 is downwards extruded by the extrusion piece 6, the upper end face of the clamping seat 3 provides supporting. The flange abuts against the upper end face of the clamping seat 3, so long as the diameter of the needle cylinder 41 is smaller than the width of the groove 31, the degree of freedom of the needle cylinder 41 in the vertical direction can be effectively limited, and the needle cylinder 41 is prevented from moving when the extrusion piece 6 extrudes the core rod 42. The design of the present application is more widely applicable to the cylinder 41 than by providing a hole having the same diameter as the cylinder 41.
Specifically, in one embodiment, the inner wall of the groove 31 is provided with a first notch 32 and a second notch 33, and the first notch 32 and the second notch 33 are symmetrically distributed around the axis of the barrel 41 of the injector 4. After the syringe 41 of the injector 4 is filled with the coating material, the coating material can be placed in the groove 31 of the holder 3 by a manual or mechanical method. The needle cylinder 41 is positioned between the first notch 32 and the second notch 33, the first notch 32 and the second notch 33 are respectively arranged on two sides of the needle cylinder 41, when the needle cylinder 41 is held by a person or a manipulator and the like to place the needle cylinder 41 into the groove 31 from the horizontal direction, the inner wall of the groove 31 can block the movement of the person or the manipulator, the person or the manipulator can be avoided by the first notch 32 and the second notch 33, so that the person or the manipulator can enter the groove 31, and the needle cylinder 41 can be placed conveniently.
Specifically, in one embodiment, the inner wall (bottom) of the groove 31 is further provided with an injection hole 34 for inserting the needle 43 of the syringe 4 and a first liquid passage 35 communicated with the injection hole; a sealing plug 36 is arranged between the injection hole 34 and the first liquid passage 35, a needle 43 arranged at the injection hole of the injector 4 passes through the sealing plug 36 and extends into the first liquid passage 35, an adapter 7 connected with the spray gun body 2 is fixedly arranged on the clamping seat 3, a second liquid passage 71 is arranged in the adapter 7, and a night inlet of the spray gun body 2 is communicated with the first liquid passage 35 through the second liquid passage 71. When the flange of the syringe 41 abuts against the upper end surface of the holder 3, the needle 43 at the injection port of the syringe 4 is inserted into the first fluid passage 35 from above to below through the sealing plug 36. The sealing plug 36 may act as a barrier to air, separating the first fluid passage 35, the second fluid passage 71 and the internal conduit of the spray gun body 2 from the environment, preventing air ingress. The first liquid passage 35 penetrates the lower end surface of the cartridge 3 from top to bottom.
Specifically, in one embodiment, a gap exists between the lower end of the syringe 41 of the injector 4 and the inner wall of the groove 31 in which the injection hole 34 is disposed, so as to prevent the lower end of the syringe 41 from being broken due to the extrusion between the injection port at the lower end of the syringe 41 and the inner wall of the groove 31, and facilitate the air flowing out of the injection hole 34, so as to prevent the lower end of the syringe 41 from blocking the outlet of the injection hole 34, so that the air pressure in the injection hole 34 is increased by two, and the air enters the first liquid passage 35 from the small needle hole on the sealing plug 36.
Specifically, in one embodiment, the spray gun body 2 has a third liquid passage communicated with the nozzle, one end of the adaptor 7 is fixedly connected with the lower end face of the clamping seat 3, and the other end of the adaptor 7 is inserted into the third liquid passage.
Specifically, in one embodiment, the spray gun body 2 further has a detection hole 22 communicating with the third liquid passage 21, and a detector for detecting the pressure of the third liquid passage is mounted on the detection hole.
Specifically, in one embodiment, the first fluid passage 35 and the second fluid passage 71 in the adaptor 7 are both evacuated to a vacuum state, so that the second fluid passage 71 has a suction force, and after the syringe 4 injects paint into the first fluid passage 35, paint is sucked to the third fluid passage in the spray gun body 2 by the suction force of the second fluid passage 71.
Specifically, in one embodiment, the spray gun coating device further includes an infrared distance sensor 8 mounted on the base 1; the pressure member 6 is provided with a through hole 61, and the radiation of the infrared distance sensor 8 is irradiated on the core rod 42 of the syringe 4 through the through hole 61. The infrared distance sensor 8 is fixed on the base 1 and is positioned right above the extrusion piece 6, the positions of different core rods 42 of the coating amount in the needle cylinder 41 are different, the transmitting end of the infrared distance sensor 8 transmits infrared rays from top to bottom, the infrared rays are reflected to the receiving end of the infrared distance sensor 8 through the upper end face of the core rod 42, the distance of the core rod 42 is calculated through the transmitting and receiving time difference, and therefore the linear motion driver 5 can accurately control the extrusion piece 6 to accurately reach the upper end face of the core rod 42 and be in contact with the upper end face of the core rod 42. The infrared distance sensor 8 can detect the position of the core rod 42 of the injector 4 and can also detect whether the injector 4 is on the clamping seat 3, so that the motion of the linear motion driver 5 can be accurately controlled.
Specifically, as shown in fig. 5 to 7, in one embodiment, the linear actuator 5 includes a first support 51 and a second support 52 both fixed on the base 1, a first synchronous pulley 53 rotatably mounted on the first support 51, a second synchronous pulley 54 rotatably mounted on the second support 52, a motor 50 having an output end connected to a first synchronous pulley 55, a synchronous belt 55 sleeved on the first synchronous pulley 53 and the second synchronous pulley 54, and a driving block 56 fixed on the synchronous belt 55; the pressing member 6 is fixed to the driving block 56. The first support 51 and the second support 52 are spaced apart from each other in the vertical direction, and the motor 50 drives the first synchronous pulley 53 to rotate, so that the synchronous belt 55 moves, and finally the driving block 56 fixed on the synchronous belt 55 drives the extrusion member 6 to move.
Specifically, in one embodiment, the linear motion driver 5 further comprises a first hub 510; the first support 51 is rotatably provided with a first bearing 511 and a second bearing 512, a first mounting groove is formed between the first bearing 511 and the second bearing 512, one end of a first wheel shaft 510 is mounted on the first bearing 511, the other end of the first wheel shaft 510 is mounted on the second bearing 512 and connected with the output end of the motor 50, and a first synchronous pulley 53 is positioned in the first mounting groove and fixedly mounted on the first wheel shaft 510. The first synchronous pulley 53 and the first wheel shaft 510 are respectively provided with a first key slot, the first synchronous pulley 53 and the first wheel shaft 510 are fixedly connected through the matching of a first connecting key and the key slot, and the first synchronous pulley 53 and the first wheel shaft 510 coaxially and synchronously rotate.
Specifically, in one embodiment, the linear motion actuator 5 further comprises a second axle 520; the second support 52 is rotatably mounted with a third bearing 521 and a fourth bearing 522, a second mounting groove is disposed between the third bearing 521 and the fourth bearing 522, one end of the second axle 520 is mounted on the third bearing 521, the other end of the second axle 520 is mounted on the fourth bearing 522, and the second synchronous pulley 54 is located in the second mounting groove and fixedly mounted on the second axle 520. The second synchronous pulley 54 and the second axle 520 are respectively provided with a first key slot, the second synchronous pulley 54 and the second axle 520 are fixedly connected with each other through the matching of a second connecting key and the second key slot, and the second synchronous pulley 54 and the second axle 520 rotate coaxially and synchronously.
Specifically, in one embodiment, the linear actuator 5 further includes a sleeper 57 fixed on the base 1, a guide rail 58 fixed on the sleeper 57, and a slider 59 slidably mounted on the guide rail 58; the slide blocks 59 are fixed on the timing belt 55, and the slide blocks 59 and the driving blocks 56 are symmetrically distributed on two sides of the timing belt 55. The direction of movement of the slider 59 is the same as the reverse of the movement of the timing belt 55. The synchronous belt 55 is annular, the sleeper 57 is located on the side face of the synchronous belt 55, the guide rail 58 is fixed on the side face of the sleeper 57, the guide rail 58 and the sliding block 59 are both located in an inner ring of the synchronous belt 55, the synchronous belt 55 is clamped between the sliding block 59 and the driving block 56, the sliding block 59 and the driving block 56 are symmetrically distributed on two sides of the synchronous belt 55, and the sliding block 59 and the driving block 56 are relatively fixed.
Specifically, in one embodiment, the spray gun coating device further comprises a photoelectric switch 9 mounted on the base 1 and a sensing piece 10 fixed opposite to the driving block 56 and used for blocking the emitted light of the photoelectric switch 9. The photoelectric switch 9 is located above the base 1 and near the first support 51. The photoelectric switch 9 has a ray emitting end and a ray receiving end, the ray emitting end and the ray receiving end are horizontally distributed at intervals, the induction sheet 10 is fixed on the sliding block 59, when the driving block 56 is located at the original position (close to the first support 51), the induction sheet 10 blocks the ray generated by the photoelectric switch 9, and therefore whether the driving block 56 of the linear motion driver 5 is located at the original position or not is measured.
Specifically, in one embodiment, the linear actuator 5 further comprises a dust cover 11; a strip-shaped groove 12 is formed in the dust cover 11, a part of the synchronous belt 55 is located in the dust cover, the rest part of the synchronous belt extends out of the strip-shaped groove 12, the first support 51, the second support 52, the first synchronous belt pulley 53 and the second synchronous belt pulley 54 are located in the dust cover 11, and the driving block 56 is located outside the dust cover 11. The first stopper 111 and the second stopper 112 are arranged outside the dust cover 11, and are respectively located at the upper end and the lower end of the strip-shaped groove 12, and the first stopper and the second stopper can prevent the driving block 56 from exceeding the limit position and preventing the driving block 56 from colliding when the driving block 56 slides up and down.
Specifically, in an embodiment, all there is the area mouth that is used for the hold-in range to pass on first stopper and the second stopper, and in the dust cover was got back to from the area mouth to the hold-in range pivoted for first synchronous pulley and second synchronous pulley's dustproof effect is better.
Specifically, in one embodiment, the dust cover 11 is provided with a shaft hole 113 on a side surface thereof for the output shaft of the motor to pass through.
The working process of the invention is as follows: at first put into the recess of cassette through modes such as manual work or manipulator with the syringe, the syringe horizontal migration moves downwards again after getting into the recess for the syringe needle from last down passing the sealing plug and getting into first liquid passage when the lower terminal surface of the flange of cylinder supports and leans on the up end of base, and first breach and second breach can let people's hand or manipulator get into, realize dodging, avoid the cassette to cause the interference to preventing the syringe. After the syringe was placed, infrared distance sensor detected the distance position of the core bar of syringe needle, then stopped after the lower surface that drives the extruded article downstream through the rectilinear motion driver and made the extruded article just touch the upper end of core bar, when waiting to need this internal injection coating of spray gun, start the rectilinear motion driver, drive the core bar that extruded article extruded the syringe through the rectilinear motion driver, make this internally of coating injection spray gun on the syringe, at last spray through this internally of spray gun. Different injectors can be equipped with different coatings, when different coatings need to be changed and the spraying is carried out, only need to change the injector can, cleaning liquids such as Tianna water also can be adorned to the injector, before different coatings need to be changed, the passageway of cassette, adaptor and spray gun body inner wall need to be washd, pours into Tianna water into through above-mentioned step, changes the injector that is equipped with other coatings at last again.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011200236.1A CN112354713B (en) | 2020-10-30 | 2020-10-30 | Spray gun coating device |
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|---|---|---|---|
| CN202011200236.1A CN112354713B (en) | 2020-10-30 | 2020-10-30 | Spray gun coating device |
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| CN112354713A true CN112354713A (en) | 2021-02-12 |
| CN112354713B CN112354713B (en) | 2025-07-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114052001A (en) * | 2021-11-16 | 2022-02-18 | 贵州电网有限责任公司 | Bird repellent device for electrified equipment of QY-type substation |
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| CN110538741A (en) * | 2019-09-23 | 2019-12-06 | 贝威斯(广州)智能科技研究院有限公司 | Automatic spray gun |
| CN211383200U (en) * | 2019-09-30 | 2020-09-01 | 苏州奥奈斯传感科技有限公司 | Constant pressure syringe |
| CN214107522U (en) * | 2020-10-30 | 2021-09-03 | 广州市盛华实业有限公司 | Spray gun coating device |
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| CN114052001A (en) * | 2021-11-16 | 2022-02-18 | 贵州电网有限责任公司 | Bird repellent device for electrified equipment of QY-type substation |
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