CN114906572B - Separator receiving block for semiconductor test - Google Patents
Separator receiving block for semiconductor test Download PDFInfo
- Publication number
- CN114906572B CN114906572B CN202210582172.9A CN202210582172A CN114906572B CN 114906572 B CN114906572 B CN 114906572B CN 202210582172 A CN202210582172 A CN 202210582172A CN 114906572 B CN114906572 B CN 114906572B
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- block
- sides
- groove
- adjusting
- induction
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a separator receiving block used in semiconductor test, which comprises a receiving block, wherein an induction groove is arranged on the receiving block, inductors are respectively arranged at two sides of the induction groove, and induction light rays of the inductors at two sides are respectively injected into the two sides of the induction groove to form correlation; the cell body downside of induction tank is provided with the regulating block, and the receiving piece lower extreme both sides are provided with the fixed block, form the regulating tank of T shape between the fixed block of both sides, and the regulating block also correspondingly sets up to the T shape, and correspondingly places in the regulating tank, and the up end of regulating block constitutes whole induction tank with cell body upper side wall. According to the invention, the T-shaped adjusting groove is arranged in the middle of the fixed block, the upper end of the adjusting block and the side wall of the sensing groove form an integral sensing groove, the adjusting block can adjust the upper and lower positions through the fine adjusting rods arranged on the two sides, the size of the integral sensing groove can be correspondingly adjusted, and the adjusting is more convenient and accurate in cooperation with the positions of the correlation rays of the sensors on the two sides, so that the working efficiency can be correspondingly improved.
Description
Technical Field
The invention relates to the technical field of semiconductor testing, in particular to a separator material receiving block used in semiconductor testing.
Background
In the prior art, when a semiconductor is specifically tested in the semiconductor testing industry, a turret type manipulator is required to convey a semiconductor product from a track to a suction nozzle through a separator receiving block to perform the test, the turret type manipulator obtains signals through correlation of sensing light rays emitted by sensors arranged on two sides of the receiving block in the specific operation, and the sensors on two sides are required to be closed when shutdown detection or other conditions are necessary.
In the prior art, the material receiving block of the separator mostly adopts a short-cut structure, and an induction groove with a fixed size is arranged in the material receiving block and is matched with inductors on two sides for use; however, when the device works specifically, the sensing light rays of the sensors at two sides need to be focused during correlation, and the sensing grooves with fixed sizes can cause difficulty in adjustment of correlation of the light sources, so that the working efficiency is affected.
In addition, sometimes when the turret manipulator is required to stop for detection during working, the sensors on two sides are required to be closed, but sometimes the machine is stopped for a very short time or in the case of frequent stopping, the staff also needs to specially control the opening and closing of the sensors, which is very troublesome and affects the working efficiency.
Accordingly, in order to solve the above-mentioned problems, there is a need for a separator receiving block for use in semiconductor testing that can adjust the position of an induction tank, thereby improving the working efficiency.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a separator receiving block used in semiconductor test; the technical scheme is as follows:
a separator material receiving block used in semiconductor test comprises a material receiving block, wherein an induction groove is formed in the material receiving block, inductors are respectively arranged on two sides of the induction groove, and induction light rays of the inductors on two sides are respectively injected into the two sides of the induction groove to form correlation.
The induction tank is characterized in that an adjusting block is arranged on the lower side of the tank body of the induction tank, fixing blocks are arranged on two sides of the lower end of the receiving block, a T-shaped adjusting tank is formed between the fixing blocks on two sides, the adjusting block is correspondingly arranged into a T shape and is correspondingly placed in the adjusting tank, and the upper end face of the adjusting block and the upper side wall of the tank body form an integral induction tank.
The inside fine tuning rods that still inlay of fixed block of both sides, the fine tuning rods pass the fixed block from the below and install respectively in the both ends of regulating block, through the position of fine tuning rods upper and lower adjustment regulating block, the size of the induction groove on the material receiving piece can be adjusted correspondingly to the position of the inductor of adaptation both sides.
Further, an adjusting spring is arranged between the upper end surfaces of the fixing blocks at two sides and the lower end surfaces at two sides of the adjusting block.
Further, the fine adjustment rod is arranged to be a screw rod, screw holes are formed in the fixing blocks on two sides, the screw rod is correspondingly arranged in the screw holes, adjusting seats are arranged on the lower end faces on two sides of the adjusting block, the end portions of the screw rod are correspondingly arranged in the adjusting seats, the screw rod can correspondingly rotate, the lower end of the screw rod extends out of the fixing block, and an adjusting handle is arranged at the end portions.
Further, a vertical partition sliding groove is arranged at the middle position of the adjusting block, and a partition sliding block is arranged in the partition sliding groove; the partition slide block can move up and down in the partition slide groove and is fixed, and the partition slide block can be upwards scratched into the induction groove to partition the induction light rays of the two side inductors.
Further, the groove walls of the two sides of the partition sliding groove in the middle of the adjusting block are also provided with extension grooves in an outward extending mode, and the two side walls of the partition sliding block arranged in the partition sliding groove are correspondingly provided with extension blocks extending into the partition sliding groove; the compression springs are arranged in the extension grooves at uniform intervals, pressing blocks are correspondingly arranged at the end parts of the compression springs, the pressing blocks are arranged into an integrated structure and are arranged into a structure form of a whole pressing plate, and the pressing blocks are correspondingly pressed on extension blocks extending into the partition sliding grooves under the action of the compression springs.
Further, the extending blocks on two sides of the partition sliding block are respectively arranged at the upper end and the lower end of the side wall of the partition sliding block, when the extending blocks on two sides extend into the extending groove, the extending blocks on two sides are respectively attached to the upper end and the lower end of the extending groove, and the corresponding compression springs are arranged on the opposite end faces of the extending groove, so that the pressing blocks on two sides are respectively compressed on the extending blocks from the upper side and the lower side.
The beneficial effects are that: the invention has the following beneficial effects:
(1) In the invention, the induction groove is not fixed, the induction groove is arranged in an adjustable mode, two sides of the lower end of the receiving block are respectively provided with a fixed block, thus a T-shaped adjusting groove is arranged in the middle of the fixed block, an adjusting block is arranged in the adjusting groove, the adjusting block is also arranged in a T shape, thus the upper end of the adjusting block and the side wall of the induction groove form an integral induction groove, the adjusting block can adjust the upper and lower positions through fine adjustment rods arranged on two sides, the size of the integral induction groove can be correspondingly adjusted, and the adjusting block is more convenient and accurate in cooperation with the position of the correlation light rays of the inductors on two sides, thus the working efficiency can be correspondingly improved;
(2) The concrete adjustment of the adjusting block is adjusted through the fine adjustment rods arranged on two sides, the fine adjustment rods are arranged in a screw mode, and screw holes are also formed in the fixing block, so that the adjusting block is convenient to adjust, and the position of the adjusting block can be fixed through a thread structure; in addition, the adjusting spring is also arranged, and the position of the adjusting block can be further fixed by the adjusting spring, so that the adjusting block cannot shake after being adjusted, and the adjusting block is reasonable in structure and convenient to use;
(3) According to the invention, the isolation sliding block capable of sliding up and down is further arranged in the adjusting block, after the isolation sliding block moves up, correlation light rays of the sensors at two sides can be isolated, the turret manipulator can stop working correspondingly, and after the turret manipulator is opened, the turret manipulator can work correspondingly, so that the sensors at two sides are not required to be closed, and a worker can finish the opening and closing of the turret manipulator at a station, so that the working efficiency is improved;
(4) The sliding and fixing of the isolation sliding block are realized through the pressing blocks and the extension blocks at the two sides, the extension grooves are formed in the two sides of the isolation sliding groove in an extending mode, the extension blocks inserted into the extension grooves are correspondingly arranged at the two sides of the extension sliding block, the compression springs and the pressing blocks are arranged in the extension grooves, the pressing blocks are compressed on the extension blocks, the isolation sliding block can be pushed to move up and down through external force, but after the isolation sliding block moves, the extension blocks on the isolation sliding block are compressed by the pressing blocks, the positions of the extension blocks are correspondingly fixed, and workers can adjust the isolation sliding block up and down through external force, so that the isolation sliding block is quite convenient to use;
(5) In the invention, the extending blocks on the isolation sliding blocks are arranged on two sides up and down, correspondingly extend into the extending grooves and are arranged on the upper and lower sides, and the compression springs and the pressing blocks in the isolation sliding grooves are correspondingly arranged on the upper and lower sides and compress the isolation sliding blocks from two directions, so that the whole structure is quite stable, the isolation sliding blocks are quite stable, and the structure is quite reasonable.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a cross-sectional view A-A of fig. 1.
Detailed Description
The invention will be further illustrated by the following drawings and specific examples, which are carried out on the basis of the technical solutions of the invention, it being understood that these examples are only intended to illustrate the invention and are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, a separator material receiving block for semiconductor testing includes a material receiving block 1, an induction groove 2 is provided on the material receiving block 1, two sides of the induction groove 2 are respectively provided with an inductor 3, and induction light of the inductors 3 on two sides is respectively injected from two sides of the induction groove 2 to form correlation.
The cell body downside of induction tank 2 is provided with regulating block 4, and receiving piece 1 lower extreme both sides are provided with fixed block 5, form T shape's regulating groove 6 between the fixed block 5 of both sides, and regulating block 4 also correspondingly sets up to the T shape, and correspondingly places in regulating groove 6, and the up end of this regulating block 4 constitutes whole induction tank 2 with cell body upper side wall.
The inside of the fixed blocks 5 at two sides is also embedded with a fine tuning rod 7, the fine tuning rod 7 passes through the fixed blocks 5 from the lower part and is respectively arranged at two ends of the adjusting block 4, and the size of the induction groove 2 on the receiving block 1 can be correspondingly adjusted by adjusting the position of the adjusting block 4 up and down through the fine tuning rod 7, so that the position of the inductor 3 at two sides is adapted; an adjusting spring 8 is also arranged between the upper end surfaces of the two side fixing blocks 5 and the lower end surfaces of the two sides of the adjusting block 4.
The fine adjustment rod 7 is arranged into a screw rod, screw holes are formed in the fixing blocks 5 on two sides, the screw rod is correspondingly arranged in the screw holes, adjusting seats 9 are arranged on the lower end faces of two sides of the adjusting block 4, the end portions of the screw rod are correspondingly arranged in the adjusting seats 9, the screw rod can correspondingly rotate, the lower end of the screw rod extends out of the fixing blocks 5, and an adjusting handle 10 is arranged at the end portions.
In the invention, the induction groove is not fixed, the induction groove is arranged in an adjustable mode, two sides of the lower end of the receiving block are respectively provided with a fixed block, a T-shaped adjusting groove is arranged in the middle of the fixed block, an adjusting block is arranged in the adjusting groove, the adjusting block is also arranged in a T shape, the upper end of the adjusting block and the side wall of the induction groove form an integral induction groove, the adjusting block can adjust the upper position and the lower position through fine adjustment rods arranged on two sides, the size of the integral induction groove can be correspondingly adjusted, and the adjusting block is more convenient and accurate in cooperation with the position of the correlation light rays of the inductors on two sides, so that the working efficiency can be correspondingly improved.
The concrete adjustment of the adjusting block is adjusted through the fine adjustment rods arranged on two sides, the fine adjustment rods are arranged in a screw mode, and screw holes are also formed in the fixing block, so that the adjusting block is convenient to adjust, and the position of the adjusting block can be fixed through a thread structure; in addition, the adjusting spring is further arranged, and the adjusting spring can further fix the position of the adjusting block, so that the adjusting block cannot shake after being adjusted, and the adjusting block is reasonable in structure and convenient to use.
The middle position of the regulating block 4 is also provided with a vertical partition chute 11, and a partition slide block 12 is arranged in the partition chute 11; the blocking slide block 12 can move up and down in the blocking slide groove 11 and is fixed, and the blocking slide block 12 can be upwards scratched into the sensing groove 2 to block the sensing light emitted by the two side sensors 3.
The groove walls of the two sides of the partition sliding groove 11 in the middle of the adjusting block 4 are also provided with extension grooves 13 in an outward extending way, and the two side walls of the partition sliding block 12 arranged in the partition sliding groove 11 are correspondingly provided with extension blocks 14 extending into the partition sliding groove 11; the extension groove 13 is internally provided with compression springs 15 which are uniformly arranged at intervals, the end parts of the compression springs 15 are correspondingly provided with pressing blocks 16, the pressing blocks 16 are arranged into an integrated structure and are arranged into a structure form of a whole pressing plate, and the pressing blocks 16 are correspondingly pressed on the extension blocks 14 which extend into the partition sliding groove 11 under the action of the compression springs 15.
The extension blocks 14 on two sides of the partition slide block 12 are respectively arranged at the upper end and the lower end of the side wall of the partition slide block 12, when the extension blocks 14 on two sides extend into the extension groove 13, the extension blocks 14 on two sides are respectively attached to the upper end and the lower end of the extension groove 13, and the corresponding compression springs 15 are arranged on the opposite end surfaces of the extension groove 13, so that the compression blocks 16 on two sides are respectively compressed on the extension blocks 14 from the upper side and the lower side.
According to the invention, the isolation sliding block capable of sliding up and down is further arranged in the adjusting block, after the isolation sliding block moves up, correlation light rays of the sensors at two sides can be isolated, the turret manipulator can stop working correspondingly, and after the turret manipulator is opened, the turret manipulator can work correspondingly, so that the sensors at two sides are not required to be closed, and a worker can finish the opening and closing of the turret manipulator at a station, so that the working efficiency is improved.
The sliding and fixing of the isolation sliding block are realized through the pressing blocks and the extension blocks at the two sides, the extension grooves are formed in the two sides of the isolation sliding groove in an extending mode, the extension blocks inserted into the extension grooves are correspondingly arranged at the two sides of the extension sliding block, the pressing springs and the pressing blocks are arranged in the extension grooves, the pressing blocks are pressed on the extension blocks, the isolation sliding block can be pushed to move up and down through external force, but after the isolation sliding block moves, the extension blocks on the isolation sliding block are pressed by the pressing blocks, the positions of the extension blocks are correspondingly fixed, and workers can adjust the isolation sliding block up and down through external force, so that the isolation sliding block is quite convenient to use.
In the invention, the extending blocks on the isolation sliding blocks are arranged on two sides up and down, correspondingly extend into the extending grooves and are arranged on the upper and lower sides, and the compression springs and the pressing blocks in the isolation sliding grooves are correspondingly arranged on the upper and lower sides and compress the isolation sliding blocks from two directions, so that the whole structure is quite stable, the isolation sliding blocks are quite stable, and the structure is quite reasonable.
The above detailed description is only a preferred embodiment of the present invention and is not intended to limit the scope of the claims, but all equivalent changes and modifications that can be made according to the protection scope of the claims are included in the scope of the claims.
Claims (6)
1. A separator termination block for use in semiconductor testing, comprising: the induction type solar energy collecting device comprises a receiving block (1), wherein an induction groove (2) is formed in the receiving block (1), inductors (3) are respectively arranged on two sides of the induction groove (2), and induction light rays of the inductors (3) on two sides are respectively injected into the induction groove (2) from two sides to form correlation;
the lower side of the tank body of the induction tank (2) is provided with an adjusting block (4), two sides of the lower end of the receiving block (1) are provided with fixed blocks (5), a T-shaped adjusting tank (6) is formed between the fixed blocks (5) at two sides, the adjusting block (4) is correspondingly arranged in the T-shaped adjusting tank (6), and the upper end surface of the adjusting block (4) and the upper side wall of the tank body form an integral induction tank (2);
the inside of fixed block (5) of both sides still inlays and is equipped with fine setting pole (7), and fine setting pole (7) pass fixed block (5) from the below and install the both ends at regulating block (4) respectively, and the position of regulating block (4) is adjusted from top to bottom through fine setting pole (7), but the size of induction groove (2) on corresponding regulation receiving piece (1) to the position of inductor (3) of adaptation both sides.
2. A separator termination block for use in semiconductor testing as claimed in claim 1, wherein: an adjusting spring (8) is also arranged between the upper end surfaces of the fixing blocks (5) on two sides and the lower end surfaces of the adjusting blocks (4) on two sides.
3. A separator termination block for use in semiconductor testing as claimed in claim 1, wherein: the fine adjustment rod (7) is arranged to be a screw rod, screw holes are formed in the fixing blocks (5) on two sides, the screw rod is correspondingly arranged in the screw holes, adjusting seats (9) are arranged on the lower end faces of the two sides of the adjusting block (4), the end parts of the screw rod are correspondingly arranged in the adjusting seats (9), the screw rod can correspondingly rotate, the lower end of the screw rod extends out of the fixing blocks (5), and an adjusting handle (10) is arranged at the end parts.
4. A separator termination block for use in semiconductor testing as claimed in claim 1, wherein: a vertical partition sliding groove (11) is further formed in the middle position of the adjusting block (4), and a partition sliding block (12) is arranged in the partition sliding groove (11); the blocking slide block (12) can move up and down in the blocking slide groove (11) and is fixed, and the blocking slide block (12) can be upwards scratched into the sensing groove (2) to block the sensing light rays of the opposite sensors (3) at two sides.
5. A separator termination block for use in semiconductor testing as defined in claim 4, wherein: the two side wall parts of the partition sliding groove (11) in the middle of the adjusting block (4) are also provided with extension grooves (13) in an outward extending way, and the two side walls of the partition sliding block (12) arranged in the partition sliding groove (11) are correspondingly provided with extension blocks (14) extending into the partition sliding groove (11); and be provided with again in extending groove (13) interval evenly set up hold-down spring (15), the tip of hold-down spring (15) is installed briquetting (16) correspondingly, briquetting (16) set up to integral type structure, set up to the structural style of monoblock clamp plate, and briquetting (16) compress tightly on extension piece (14) that stretch into in separating spout (11) correspondingly under the effect of hold-down spring (15).
6. A separator termination block for use in semiconductor testing as defined in claim 5, wherein: the extension blocks (14) on two sides of the partition slide block (12) are respectively arranged at the upper end and the lower end of the side wall of the partition slide block (12), when the extension blocks (14) on two sides extend into the extension groove (13), the extension blocks (14) on two sides are respectively attached to the upper end and the lower end of the extension groove (13), and the corresponding compression springs (15) are arranged on opposite end surfaces of the extension groove (13) so that the pressing blocks (16) on two sides are respectively compressed on the extension blocks (14) from the upper side and the lower side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210582172.9A CN114906572B (en) | 2022-05-26 | 2022-05-26 | Separator receiving block for semiconductor test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210582172.9A CN114906572B (en) | 2022-05-26 | 2022-05-26 | Separator receiving block for semiconductor test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114906572A CN114906572A (en) | 2022-08-16 |
| CN114906572B true CN114906572B (en) | 2023-08-22 |
Family
ID=82768821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210582172.9A Active CN114906572B (en) | 2022-05-26 | 2022-05-26 | Separator receiving block for semiconductor test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114906572B (en) |
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| KR20030090392A (en) * | 2002-05-23 | 2003-11-28 | 주식회사 지오텔 | A transmitting/receiving apparatus by diffusion-modulating of a semiconductor laser |
| CN1753090A (en) * | 2005-08-17 | 2006-03-29 | 上海理工大学 | Focusing method of oblique incidence multilayer optical disk |
| CN103038567A (en) * | 2010-04-16 | 2013-04-10 | 弗莱克斯照明第二有限责任公司 | Illumination device comprising a film-based lightguide |
| CN103345262A (en) * | 2013-06-25 | 2013-10-09 | 中国舰船研究设计中心 | Rotary table follow-up tracking and aligning device used for three-dimensional antenna housing performance test |
| CN106236262A (en) * | 2016-08-08 | 2016-12-21 | 张海燕 | Optical tracking location Use of Neuronavigation device |
| CN208127764U (en) * | 2018-05-08 | 2018-11-20 | 江苏莱尔曼电气科技有限公司 | A kind of high accurate transmission line of electricity laser is removed obstacles instrument |
| CN214510041U (en) * | 2020-10-22 | 2021-10-29 | 福州印华家具有限公司 | Office table convenient to promote office table top |
| CN215297649U (en) * | 2021-05-13 | 2021-12-24 | 江西格物建筑工程有限公司 | Speed measuring device for water conservancy and hydropower |
-
2022
- 2022-05-26 CN CN202210582172.9A patent/CN114906572B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030090392A (en) * | 2002-05-23 | 2003-11-28 | 주식회사 지오텔 | A transmitting/receiving apparatus by diffusion-modulating of a semiconductor laser |
| CN1753090A (en) * | 2005-08-17 | 2006-03-29 | 上海理工大学 | Focusing method of oblique incidence multilayer optical disk |
| CN103038567A (en) * | 2010-04-16 | 2013-04-10 | 弗莱克斯照明第二有限责任公司 | Illumination device comprising a film-based lightguide |
| CN103345262A (en) * | 2013-06-25 | 2013-10-09 | 中国舰船研究设计中心 | Rotary table follow-up tracking and aligning device used for three-dimensional antenna housing performance test |
| CN106236262A (en) * | 2016-08-08 | 2016-12-21 | 张海燕 | Optical tracking location Use of Neuronavigation device |
| CN208127764U (en) * | 2018-05-08 | 2018-11-20 | 江苏莱尔曼电气科技有限公司 | A kind of high accurate transmission line of electricity laser is removed obstacles instrument |
| CN214510041U (en) * | 2020-10-22 | 2021-10-29 | 福州印华家具有限公司 | Office table convenient to promote office table top |
| CN215297649U (en) * | 2021-05-13 | 2021-12-24 | 江西格物建筑工程有限公司 | Speed measuring device for water conservancy and hydropower |
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| Publication number | Publication date |
|---|---|
| CN114906572A (en) | 2022-08-16 |
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