CN114798538A - Electro-hydraulic servo valve emergency protection device - Google Patents
Electro-hydraulic servo valve emergency protection device Download PDFInfo
- Publication number
- CN114798538A CN114798538A CN202210394743.6A CN202210394743A CN114798538A CN 114798538 A CN114798538 A CN 114798538A CN 202210394743 A CN202210394743 A CN 202210394743A CN 114798538 A CN114798538 A CN 114798538A
- Authority
- CN
- China
- Prior art keywords
- protection device
- device body
- fixedly connected
- sliding
- 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.)
- Granted
Links
- 238000009434 installation Methods 0.000 claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims description 37
- 230000000694 effects Effects 0.000 abstract description 2
- 241000883990 Flabellum Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses an electro-hydraulic servo valve emergency protection device which comprises a protection device body, an installation mechanism and a limiting mechanism, wherein a fan is fixedly installed on the protection device body, a filter screen is arranged on the protection device body, a support is fixedly connected onto the protection device body, a connecting sleeve is fixedly connected onto the support, the inside of the connecting sleeve is connected with a connecting rod through a bearing, a baffle is fixedly connected onto the connecting rod, the inside of the filter screen is rotatably connected with a baffle, one end of the connecting rod is fixedly connected with fan blades, the installation mechanism is arranged on the connecting rod, a plug is inserted into the protection device body, the protection device body is contacted with the limiting frame, the limiting frame is contacted with the plug, and the limiting mechanism is arranged on the limiting frame. The invention relates to an electro-hydraulic servo valve emergency protection device which has the effects of preventing a filter screen from being blocked and preventing a plug from loosening.
Description
Technical Field
The invention belongs to the technical field of electro-hydraulic servo valves, and particularly relates to an electro-hydraulic servo valve emergency protection device.
Background
The electro-hydraulic servo valve is a key element in electro-hydraulic servo control, and is a hydraulic control valve which correspondingly outputs modulated flow and pressure after receiving an analog electric signal. When the electro-hydraulic servo valve is used, the emergency protection device can be used for monitoring and operating the electro-hydraulic servo valve, and when the existing electro-hydraulic servo valve emergency protection device is used, a plug is not stably inserted, and a filter screen is easily blocked when the electro-hydraulic servo valve emergency protection device is used.
The invention content is as follows:
the present invention is directed to solving the above problems by providing an electro-hydraulic servo valve emergency protection device that solves the problems noted in the background.
In order to solve the above problems, the present invention provides a technical solution:
the emergency protection device for the electro-hydraulic servo valve comprises a protection device body, an installation mechanism and a limiting mechanism, wherein a fan is fixedly installed on the protection device body, a filter screen is arranged on the protection device body, a support is fixedly connected to the protection device body, a connecting sleeve is fixedly connected to the support, a connecting rod is connected to the inside of the connecting sleeve through a bearing, a baffle is fixedly connected to the connecting rod, a connecting rod is connected to the inside of the filter screen in a rotating mode, a baffle is connected to the inside of the filter screen in a rotating mode, one end of the connecting rod is fixedly connected with fan blades, the installation mechanism is arranged on the connecting rod, a plug is inserted into the protection device body, a limiting frame is contacted with the protection device body, the limiting frame is contacted with the plug, and the limiting mechanism is arranged on the limiting frame.
As preferred, installation mechanism includes the installation cover, the scraper blade, the locating piece, the nut, the protective housing, the inlet port, the fixture block, the installation cover has been cup jointed in the outside slip of connecting rod, fixedly connected with scraper blade is sheathe in to the installation, fixedly connected with locating piece is sheathe in to the installation, the inside sliding connection of baffle has the locating piece, be provided with the screw thread on the connecting rod, there is the nut in the outside of connecting rod through threaded connection, nut and installation cover contact, the contact has the protective housing on the protection device body, the inlet port has been seted up on the protective housing, fixedly connected with fixture block on the protective housing, the joint has the fixture block on the protection device body, the protective housing internal rotation is connected with the connecting rod. The scraper can be detached and replaced by pulling out the clamping block on the protective shell from the protective device body and then rotating the screw-off nut.
Preferably, the installation cover and the scraper blade all contact with the baffle, and the scraper blade contacts with the filter screen, through the design of scraper blade, can effectually prevent that the filter screen from blockking up.
Preferably, the number of the air inlet holes is multiple, the air inlet holes are uniformly distributed on the protective shell, and air flow can enter the protective device body through the design of the air inlet holes.
As preferred, stop gear includes the spout, the slider, the guide bar, the fixed plate, the threaded rod, the slide bar, the limiting plate, a spring, the spacing groove, the spout has been seted up on the protection device body, the inside sliding connection of spout has the slider, spacing frame and slider fixed connection, fixedly connected with fixed plate on the protection device body, there is the threaded rod inside of fixed plate through threaded connection, install the threaded rod through the bearing on the spacing frame, the inside sliding connection of spacing frame has the slide bar, fixedly connected with limiting plate on the slide bar, limiting plate and this body of protection device contact, the outside of slide bar is provided with the spring, the spacing groove has been seted up on the protection device body, design through spacing frame, can play limiting displacement to the plug, design through the slide bar, can be spacing to the spacing frame, make the plug more stable when pegging graft with the protection device body.
Preferably, the inside fixedly connected with guide bar of spout, the outside slip of guide bar has cup jointed the slider, and through the design of guide bar, it is more stable when can making the spacing move.
Preferably, one end of the spring is fixedly connected with a limiting plate, the other end of the spring is fixedly connected with a limiting frame, and the sliding rod can be driven to limit the limiting frame through the design of the spring.
Preferably, the number of the limiting grooves is two, the sliding rods are connected to the inner portions of the two limiting grooves in a sliding mode, and the limiting grooves can be matched with the sliding rods to limit the limiting frame.
The invention has the beneficial effects that: the invention relates to an electro-hydraulic servo valve emergency protection device, which has the effects of preventing a filter screen from being blocked and preventing a plug from loosening, and has the following beneficial effects in specific use:
firstly, through being provided with the scraper blade, when can making the fan drive flabellum and rotate, make the flabellum drive the scraper blade and scrape the filter screen, can effectually prevent that the filter screen from blockking up, and through being provided with parts such as installation cover, nut, can conveniently dismantle the change to the scraper blade, solved current electro-hydraulic servo valve emergency protection device and use the easy problem of blockking up of filter screen.
Secondly, through being provided with parts such as limiting plate, fixed plate, threaded rod, can play limiting displacement to the plug for the plug is more stable when using, can not appear not hard up phenomenon, has solved the current emergent protection device of electrohydraulic servo valve and has pegged graft unstable problem of plug when using.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the portion B of FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of the structure of the portion C in FIG. 1 according to the present invention;
FIG. 5 is a right side view of the mounting sleeve of FIG. 3 of the present invention;
fig. 6 is a left side view of the protective case of fig. 1 of the present invention.
In the figure: 1. a protection device body; 2. a fan; 3. filtering with a screen; 4. a support; 5. connecting sleeves; 6. a connecting rod; 7. a baffle plate; 8. a fan blade; 9. an installation mechanism; 91. installing a sleeve; 92. a squeegee; 93. positioning blocks; 94. a nut; 95. a protective shell; 96. an air inlet; 97. a clamping block; 10. a plug; 11. a limiting frame; 12. a limiting mechanism; 121. a chute; 122. a slider; 123. a guide bar; 124. a fixing plate; 125. a threaded rod; 126. a slide bar; 127. a limiting plate; 128. a spring; 129. a limiting groove.
The specific implementation mode is as follows:
as shown in fig. 1 to 6, the following technical solutions are adopted in the present embodiment:
example (b):
emergent protection device of electrohydraulic servo valve, including protection device body 1, installation mechanism 9, stop gear 12, fixed mounting has fan 2 on the protection device body 1, be provided with filter screen 3 on the protection device body 1, fixedly connected with support 4 on the protection device body 1, fixedly connected with adapter sleeve 5 on the support 4, the inside of adapter sleeve 5 is connected with connecting rod 6 through the bearing, fixedly connected with baffle 7 on the connecting rod 6, the inside of filter screen 3 rotates and is connected with baffle 7, the one end fixedly connected with flabellum 8 of connecting rod 6, be provided with installation mechanism 9 on the connecting rod 6, it has plug 10 to peg graft on the protection device body 1, contact spacing frame 11 on the protection device body 1, spacing frame 11 and plug 10 contact, be provided with stop gear 12 on spacing frame 11.
Wherein, installation mechanism 9 includes installation cover 91, scraper blade 92, locating piece 93, nut 94, protective housing 95, inlet port 96, fixture block 97, installation cover 91 has been cup jointed in the outside slip of connecting rod 6, fixedly connected with scraper blade 92 on the installation cover 91, fixedly connected with locating piece 93 on the installation cover 91, the inside sliding connection of baffle 7 has locating piece 93, be provided with the screw thread on the connecting rod 6, there is nut 94 in the outside of connecting rod 6 through threaded connection, nut 94 contacts with installation cover 91, the last contact of protection device body 1 has protective housing 95, inlet port 96 has been seted up on the protective housing 95, fixedly connected with fixture block 97 on the protective housing 95, the joint has fixture block 97 on the protection device body 1, protective housing 95 is connected with internal rotation connecting rod 6. The latch 97 is made of elastic rubber, and the scraper 92 can be removed and replaced by pulling out the latch 97 on the protective case 95 from the protective device body 1 and then rotating the screw nut 94.
Wherein, installation cover 91 and scraper blade 92 all contact with baffle 7, and scraper blade 92 contacts with filter screen 3, through the design of scraper blade 92, can effectually prevent that filter screen 3 from blockking up.
Wherein, the quantity of inlet hole 96 is a plurality of, and a plurality of inlet holes 96 evenly distributed on protective housing 95, through the design of inlet hole 96, can make the air current get into in the protection device body 1.
Wherein, the limiting mechanism 12 comprises a sliding groove 121, a sliding block 122, a guide rod 123, a fixing plate 124, a threaded rod 125, a sliding rod 126, a limiting plate 127, a spring 128 and a limiting groove 129, the sliding groove 121 is formed on the protection device body 1, the sliding block 122 is connected inside the sliding groove 121 in a sliding manner, the limiting frame 11 is fixedly connected with the sliding block 122, the fixing plate 124 is fixedly connected on the protection device body 1, the threaded rod 125 is connected inside the fixing plate 124 through threads, the threaded rod 125 is installed on the limiting frame 11 through a bearing, the sliding rod 126 is connected inside the limiting frame 11 in a sliding manner, the limiting plate 127 is fixedly connected on the sliding rod 126, the limiting plate 127 is in contact with the protection device body 1, the spring 128 is arranged outside the sliding rod 126, the limiting groove 129 is formed on the protection device body 1, the plug 10 can be limited through the design of the limiting frame 11, and the limiting frame 11 can be limited through the design of the sliding rod 126, the plug 10 is more stable when being inserted into the protection device body 1.
Wherein, the inside fixedly connected with guide bar 123 of spout 121, the outside slip of guide bar 123 has cup jointed slider 122, and through guide bar 123's design, it is more stable when can making spacing 11 remove.
Wherein, one end fixedly connected with limiting plate 127 of spring 128, the other end fixedly connected with spacing 11 of spring 128, through the design of spring 128, can drive slide bar 126 and carry out spacing to spacing 11.
The number of the limiting grooves 129 is two, the sliding rods 126 are connected to the inner portions of the two limiting grooves 129 in a sliding mode, and the limiting grooves 129 are designed to be matched with the sliding rods 126 to limit the limiting frame 11.
The using state of the invention is as follows: when the protective device is used, the fan 2 is started, the fan 2 drives air flow to enter the protective device body 1 from the air inlet 96 on the protective shell 95, then the air flow drives the fan blades 8 to rotate, the fan blades 8 drive the connecting rod 6 to rotate, the connecting rod 6 drives the scraper 92 on the mounting sleeve 91 to rotate, the scraper 92 scrapes and rubs the filter screen 3, the filter screen 3 is effectively blocked, the protective shell 95 can be taken off from the protective device body 1 by pulling the fixture blocks 97 on the protective shell 95 out of the protective device body 1, then the screwing-off nuts 94 are rotated, the limit on the mounting sleeve 91 can be removed, the positioning blocks 93 on the mounting sleeve 91 can slide out of the baffle 7, the mounting sleeve 91 and the scraper 92 can be taken off, the scraper 92 can be detached and replaced, the plug 10 is spliced with the protective device body 1, then the threaded rod 125 and the fixing plate 124 are in threaded movement by rotating the threaded rod 125, and make the threaded rod 125 drive the spacing 11 to move, make spacing 11 and plug 10 relieve, can carry on the spacing to the plug 10, the elasticity of the spring 128 will drive the slide bar 126 on the spacing 127 to slip into the spacing groove 129 on the body of the protective device 1 at the same time, can carry on the spacing to the spacing 11, through pulling the slide bar 126 to the direction far away from the spacing 11, make the slide bar 126 drive the spacing 127 to push the spring 128 to the spacing 127, and make the slide bar 126 slip out from the spacing groove 129 on the body of the protective device 1, can relieve the spacing to the spacing 11.
Claims (8)
1. Emergent protection device of electrohydraulic servo valve, including protection device body (1), installation mechanism (9), stop gear (12), its characterized in that: the fan-type fan-shaped protection device is characterized in that a fan (2) is fixedly mounted on a protection device body (1), a filter screen (3) is arranged on the protection device body (1), a support (4) is fixedly connected onto the protection device body (1), a connecting sleeve (5) is fixedly connected onto the support (4), the inside of the connecting sleeve (5) is connected with a connecting rod (6) through a bearing, a baffle (7) is fixedly connected onto the connecting rod (6), the inside of the filter screen (3) is connected with the connecting rod (6) in a rotating mode, the inside of the filter screen (3) is connected with the baffle (7) in a rotating mode, one end of the connecting rod (6) is fixedly connected with fan blades (8), an installing mechanism (9) is arranged on the connecting rod (6), a plug (10) is inserted into the protection device body (1), a limiting frame (11) is contacted onto the protection device body (1), the limiting frame (11) is contacted with the plug (10), and a limiting mechanism (12) is arranged on the limiting frame (11).
2. The electro-hydraulic servo valve emergency protection device of claim 1, wherein: the mounting mechanism (9) comprises a mounting sleeve (91), a scraper (92), a positioning block (93), a nut (94), a protective shell (95), an air inlet hole (96) and a clamping block (97), the mounting sleeve (91) is sleeved on the outer side of the connecting rod (6) in a sliding manner, the scraper (92) is fixedly connected onto the mounting sleeve (91), the positioning block (93) is connected onto the inner portion of the baffle (7) in a sliding manner, threads are arranged on the connecting rod (6), the nut (94) is connected onto the outer side of the connecting rod (6) through the threads, the nut (94) is contacted with the mounting sleeve (91), the protective shell (95) is contacted onto the protective device body (1), the air inlet hole (96) is formed on the protective shell (95), the clamping block (97) is fixedly connected onto the protective shell (95), and the clamping block (97) is clamped onto the protective device body (1), the protective shell (95) is rotatably connected with a connecting rod (6).
3. The electro-hydraulic servo valve emergency protection device of claim 2, wherein: the installation sleeve (91) and the scraper (92) are both in contact with the baffle (7), and the scraper (92) is in contact with the filter screen (3).
4. The electro-hydraulic servo valve emergency protection device of claim 2, wherein: the number of the air inlet holes (96) is multiple, and the air inlet holes (96) are uniformly distributed on the protective shell (95).
5. The electro-hydraulic servo valve emergency protection device of claim 1, wherein: the limiting mechanism (12) comprises a sliding groove (121), a sliding block (122), a guide rod (123), a fixing plate (124), a threaded rod (125), a sliding rod (126), a limiting plate (127), a spring (128) and a limiting groove (129), the sliding groove (121) is formed in the protection device body (1), the sliding block (122) is connected to the inside of the sliding groove (121) in a sliding manner, a limiting frame (11) is fixedly connected with the sliding block (122), the fixing plate (124) is fixedly connected to the protection device body (1), the threaded rod (125) is connected to the inside of the fixing plate (124) in a threaded manner, the threaded rod (125) is installed on the limiting frame (11) through a bearing, the sliding rod (126) is connected to the inside of the limiting frame (11) in a sliding manner, the limiting plate (127) is fixedly connected to the sliding rod (126), the limiting plate (127) is in contact with the protection device body (1), and the spring (128) is arranged on the outer side of the sliding rod (126), the protection device body (1) is provided with a limit groove (129).
6. The electro-hydraulic servo valve emergency protection device of claim 5, wherein: the inside fixedly connected with guide bar (123) of spout (121), slider (122) have been cup jointed in the outside slip of guide bar (123).
7. The electro-hydraulic servo valve emergency protection device of claim 5, wherein: one end of the spring (128) is fixedly connected with a limiting plate (127), and the other end of the spring (128) is fixedly connected with a limiting frame (11).
8. The electro-hydraulic servo valve emergency protection device of claim 5, wherein: the number of the limiting grooves (129) is two, and the sliding rods (126) are connected to the inner portions of the two limiting grooves (129) in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210394743.6A CN114798538B (en) | 2022-04-15 | 2022-04-15 | Emergency protection device for electrohydraulic servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210394743.6A CN114798538B (en) | 2022-04-15 | 2022-04-15 | Emergency protection device for electrohydraulic servo valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114798538A true CN114798538A (en) | 2022-07-29 |
| CN114798538B CN114798538B (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210394743.6A Active CN114798538B (en) | 2022-04-15 | 2022-04-15 | Emergency protection device for electrohydraulic servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114798538B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355168A (en) * | 2022-10-24 | 2022-11-18 | 烟台中宇航空液压有限公司 | Multi-gear hydraulic pump |
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| EP3308057A1 (en) * | 2015-06-10 | 2018-04-18 | Poclain Hydraulics Industrie | Pressure limiting device, in particular for a hydraulic assist system for vehicles |
| CN110513522A (en) * | 2019-08-16 | 2019-11-29 | 烟台中宇航空液压有限公司 | Electrohydraulic servo valve emergency protecting equipment |
| CN210330249U (en) * | 2019-04-28 | 2020-04-17 | 湖北工业大学 | Precious box of placing charges |
| CN111430986A (en) * | 2020-04-09 | 2020-07-17 | 耿宽 | Fastening device for computer case jack |
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| CN214839983U (en) * | 2021-06-21 | 2021-11-23 | 深圳盛泰智能创新技术有限公司 | Portable motion DV camera stop gear |
| CN214896397U (en) * | 2021-06-29 | 2021-11-26 | 南京汇佰盛信息科技有限公司 | Computer multi-screen display device for software development |
| CN215301153U (en) * | 2021-06-19 | 2021-12-24 | 重庆城市管理职业学院 | Big data computer network safety device |
| CN215654334U (en) * | 2021-07-27 | 2022-01-28 | 深圳市格睿物联技术有限公司 | Digital two-phase 86 stepping micro motor EtherCAT closed loop driver |
| CN215999489U (en) * | 2021-09-02 | 2022-03-11 | 青岛顺泰飞驰车辆有限公司 | Drilling machine convenient to press from both sides tight spacing |
| CN114256691A (en) * | 2021-11-09 | 2022-03-29 | 深圳市奇思广告有限公司 | Embedded smart television access device |
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2022
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Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3308057A1 (en) * | 2015-06-10 | 2018-04-18 | Poclain Hydraulics Industrie | Pressure limiting device, in particular for a hydraulic assist system for vehicles |
| CN210330249U (en) * | 2019-04-28 | 2020-04-17 | 湖北工业大学 | Precious box of placing charges |
| CN110513522A (en) * | 2019-08-16 | 2019-11-29 | 烟台中宇航空液压有限公司 | Electrohydraulic servo valve emergency protecting equipment |
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| CN214839983U (en) * | 2021-06-21 | 2021-11-23 | 深圳盛泰智能创新技术有限公司 | Portable motion DV camera stop gear |
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| CN215999489U (en) * | 2021-09-02 | 2022-03-11 | 青岛顺泰飞驰车辆有限公司 | Drilling machine convenient to press from both sides tight spacing |
| CN114256691A (en) * | 2021-11-09 | 2022-03-29 | 深圳市奇思广告有限公司 | Embedded smart television access device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115355168A (en) * | 2022-10-24 | 2022-11-18 | 烟台中宇航空液压有限公司 | Multi-gear hydraulic pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114798538B (en) | 2023-07-25 |
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