CN110057508B - Material contact ratio detector based on high accuracy - Google Patents
Material contact ratio detector based on high accuracy Download PDFInfo
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- CN110057508B CN110057508B CN201910488407.6A CN201910488407A CN110057508B CN 110057508 B CN110057508 B CN 110057508B CN 201910488407 A CN201910488407 A CN 201910488407A CN 110057508 B CN110057508 B CN 110057508B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The invention discloses a high-precision-based material conformity detector, which comprises a machine body, wherein supports are symmetrically arranged on the left and right of the bottom surface of the machine body, a base is fixedly arranged at the bottom side of the bracket, symmetrical blocks are symmetrically arranged at the left side and the right side of the machine body, a screw sleeve sliding groove is arranged in the machine body, a pressure groove is arranged at the bottom wall of the screw sleeve sliding groove, so that the limiting blocks are pulled towards two sides, the mounting blocks are moved towards two sides, and the high-precision material to be measured is well sealed and clamped between the mounting blocks, the invention has simple structure and convenient operation, whether the sealed gap is qualified can be measured by using the sealed gap of the high-precision material, water pressure and air pressure, the actual degree is obtained by utilizing the high-strength air pressure, and the closed point is measured by the high-strength water pressure, so that the problem that the closed degree of a high-precision material cannot be measured by naked eyes or illumination and the like in the traditional method is solved.
Description
Technical Field
The invention relates to the technical field of material detection, in particular to a high-precision-based material contact ratio detector.
Background
With the development of the country, the mechanical industry flourishes, more and more high-precision machine tools are manufactured, the precision of finished products manufactured and processed by the machine tools with multi-axis linkage is very high, the tightness is very high when the high-precision products are assembled, but the products with high tightness are difficult to observe by naked eyes when the qualification is checked.
The tightness between these high precision materials is often difficult to detect during the inspection process, so it is important to design a machine that can measure the tightness.
Disclosure of Invention
The invention aims to provide a material contact ratio detector based on high precision, which is used for overcoming the defects in the prior art.
The high-precision-based material tightness detector comprises a machine body, wherein supports are symmetrically arranged on the left and right sides of the bottom surface of the machine body, a base is fixedly arranged on the bottom side of each support, symmetrical blocks are symmetrically arranged on the left and right sides of the machine body, a screw sleeve sliding groove is formed in the machine body, a pressure groove is formed in the bottom wall of the screw sleeve sliding groove, and compression devices are arranged in the pressure groove and the screw sleeve sliding groove;
the compression device comprises a motor fixedly installed on the top wall of a sliding groove of the screw sleeve, the motor is connected with the screw sleeve which is connected with the sliding groove of the screw sleeve in a sliding manner, a vertical screw is connected with the screw sleeve in a threaded manner, the bottom surface of the vertical screw is fixedly provided with a lower pressing plate which is connected with a pressure groove in a sliding manner, the pressure groove is connected with a detection plate in a sliding manner, the detection plate is internally provided with a pressure groove, two pneumatic sliders are connected with the pressure groove in a sliding manner in a bilateral symmetry manner, the top surfaces of the pneumatic sliders are respectively and fixedly provided with a starting rod which is connected with the top wall of the pressure groove in a sliding manner, the starting rod extends upwards to penetrate through the top wall of the pressure groove to enter the pressure groove and is connected with the top surface of the detection plate in a;
the right side of overhead tank is equipped with the water tank, be equipped with the device of adding water in the water tank, the device of adding water is used for storing water, the left side wall of overhead tank is equipped with the atmospheric pressure groove, be equipped with the display device who is used for measuring the degree of closure result in the atmospheric pressure groove, the diapire of overhead tank is equipped with the delivery port, the left side of delivery port is equipped with the interlock chamber, be equipped with the lift groove in the base, the interlock chamber with be equipped with between the lift groove and be used for fixed fixing device.
On the basis of the technical scheme, the water adding device comprises a water adding opening, a water pipe, a baffle sliding groove, a baffle and a baffle spring, the water adding opening is formed in the top wall of the water tank, the water pipe communicated with the pressure groove is arranged on the left side wall of the water tank, the baffle sliding groove is formed in the water pipe, the baffle is connected to the baffle sliding groove in a sliding mode, and the baffle spring is symmetrically connected between the baffle and the baffle sliding groove from top to bottom.
On the basis of the technical scheme, the display device is composed of an elastic membrane, a transverse moving block, a measuring spring, a measuring rod, a detector, a display block and an electric wire, the elastic membrane is fixedly arranged in an air pressure groove, the transverse moving block is connected in the air pressure groove in a sliding mode, the measuring spring is connected between the transverse moving block and the air pressure groove, the measuring rod which is connected with the left side wall of the air pressure groove and the left side wall of the symmetrical block in a sliding mode is arranged on the left side face of the transverse moving block, the detector is fixedly arranged on the left side face of the symmetrical block on the left side, the display block is fixedly arranged on the front side face of the symmetrical block, and the electric wire is connected between the display block and the.
On the basis of the technical scheme, the fixing device consists of a lifting motor, an open slot, a transverse screw rod, a thread block, a hinge rod, a fixed block, a lifting long plate, a long chute, an installation block, a strong spring, a limit slot, a limit block, a limit spring, a trigger block, a trigger slot, a vertical chute, a trigger rod, a rotating plate and a switch plate, wherein the lifting motor is fixedly arranged on the right side wall of the lifting slot, the left side wall of the lifting slot is provided with the open slot, the lifting motor is connected with the transverse screw rod which is rotationally connected with the left side wall of the open slot, the thread block is symmetrically and threadedly connected with the left side and the right side of the transverse screw rod, the hinge rod is hinged on the thread block, the fixed block is hinged on the hinge rod, the top surfaces of the two fixed blocks are fixedly connected with the lifting long plate, the long chute is arranged in the lifting long plate, and the installation, the installation piece with be connected with between the long spout powerful spring, be equipped with in the installation piece the spacing groove, sliding connection has in the spacing groove the stopper, the stopper with be connected with between the spacing groove spacing spring, on the horizontal bar pole still threaded connection have with open slot sliding connection trigger the piece, trigger a top surface and be equipped with trigger the groove, wherein left be equipped with in the support erect the spout, erect the spout with the rotor plate with the open slot communicates with each other, sliding connection has in erecting the spout the trigger bar, articulated on the trigger bar have the rotor plate, articulated on the rotor plate have can with the delivery port blocks the switch board.
On the basis of the technical scheme, the threads on the left side and the right side of the transverse screw rod are opposite.
On the basis of the technical scheme, the elastic membrane has elasticity, and the air pressure atmosphere moves in the opposite direction.
On the basis of the technical scheme, the pressure groove is always communicated with the pressure groove, high-pressure gas is arranged in the pressure groove, when the gas is not compressed, the gas pressure of the gas is the same as the elastic force of the measuring spring, the detection plate is attached to the pressure groove, and the gas in the pressure groove cannot overflow.
On the basis of the technical scheme, the switch board can be pulled to the right by the gravity of the trigger rod, and the high-precision material to be tested can be fixed by the elasticity of the strong spring.
The invention has the beneficial effects that: the invention has simple structure and convenient operation, can measure whether the sealed gap is qualified or not by using the sealed gap of the high-precision material, the water pressure and the air pressure, can use the high-strength air pressure to obtain the actual degree, and can measure the sealed point by using the high-strength water pressure, thereby overcoming the problem that the sealing degree of the high-precision material can not be measured by naked eyes or illumination and the like in the prior art.
Meanwhile, the device occupies a small area, is suitable for measurement of most workshops, and can measure the tightness of the materials by a simple principle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described 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 to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the internal overall structure of a high-precision-based material contact ratio detector according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A in accordance with the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B in the present invention;
fig. 4 is a top cross-sectional view of the sensing plate of fig. 3 in accordance with the present invention.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
Referring to fig. 1 to 4, a high-precision-based material tightness detector according to an embodiment of the present invention includes a machine body 21, a support 35 is symmetrically disposed on the bottom surface of the machine body 21, a base 36 is fixedly disposed on the bottom side of the support 35, symmetrical blocks 27 are symmetrically disposed on the left and right side surfaces of the machine body 21, a screw housing chute 24 is disposed in the machine body 21, a pressure groove 26 is disposed on the bottom wall of the screw housing chute 24, a compression device 101 is disposed in the pressure groove 26 and the screw housing chute 24, the compression device 101 includes a motor 22 fixedly mounted on the top wall of the screw housing chute 24, a screw housing 23 slidably connected to the screw housing chute 24 is connected to the motor 22, a vertical screw 25 is threadedly connected to the screw housing 23, a lower pressing plate 53 slidably connected to the pressure groove 26 is fixedly disposed on the bottom surface of the vertical screw 25, a detection plate 66 is slidably connected to the pressure groove 26, a pressure groove 67 is arranged in the detection plate 66, two air pressure sliders 68 are connected to the pressure groove 67 in a left-right symmetrical sliding manner, the top surfaces of the air pressure sliders 68 are fixedly provided with a starting rod 52 which is connected with the top wall of the pressure groove 67 in a sliding manner, the starting rod 52 extends upwards to penetrate through the top wall of the pressure groove 67 to enter the pressure groove 26 and is connected with the top surface of the detection plate 66 in a sliding manner, the top side of the starting rod 52 is fixedly connected with the bottom surface of the lower pressing plate 53, the right side of the pressure groove 26 is provided with a water tank 29, a water adding device 102 is arranged in the water tank 29 and is used for storing water, the left side wall of the pressure groove 26 is provided with an air pressure groove 61, a display device 103 for measuring the result of the tightness is arranged in the air pressure groove 61, the bottom wall of the pressure groove 26 is provided with a water outlet 34, and the, the base 36 is provided with a lifting groove 20, and a fixing device 104 for fixing is arranged between the linkage cavity 47 and the lifting groove 20.
In addition, in one embodiment, the water adding device 102 includes a water adding port 30 disposed on the top wall of the water tank 29, a water pipe 28 communicating with the pressure tank 26 is disposed on the left side wall of the water tank 29, a baffle chute 33 is disposed in the water pipe 28, a baffle 31 is slidably connected in the baffle chute 33, a baffle spring 32 is vertically and symmetrically connected between the baffle 31 and the baffle chute 33, water can be poured into the water tank 29 through the water adding port 30, and when the baffle 31 moves to the left, water in the water tank 29 can be pumped into the pressure tank 26 through the water pipe 28.
In addition, in one embodiment, the display device 103 includes an elastic membrane 62 fixedly installed in the air pressure groove 61, a traverse block 65 is slidably connected in the air pressure groove 61, a measuring spring 63 is connected between the traverse block 65 and the air pressure groove 61, a measuring rod 64 slidably connected to the left side wall of the air pressure groove 61 and the left side wall of the symmetrical block 27 is provided on the left side surface of the traverse block 65, a detector 49 is fixedly provided on the left side surface of the symmetrical block 27, a display block 51 is fixedly provided on the front side surface of the symmetrical block 27, an electric wire 50 is connected between the display block 51 and the detector 49, the detector 49 can read the extending length of the measuring rod 64, and then the length is displayed on the display block 51 through the electric wire 50, so that the degree of tightness can be measured in several stages.
In addition, in one embodiment, the fixing device 104 includes a lifting motor 37 fixedly installed on the right side wall of the lifting groove 20, the left side wall of the lifting groove 20 is provided with an open groove 44, a horizontal screw rod 43 rotatably connected with the left side wall of the open groove 44 is connected in the lifting motor 37, screw blocks 38 are symmetrically and threadedly connected to the left and right sides of the horizontal screw rod 43, a hinge rod 39 is hinged on the screw block 38, fixed blocks 40 are hinged on the hinge rod 39, a lifting long plate 58 is fixedly connected to the top surfaces of the two fixed blocks 40, a long sliding groove 56 is arranged in the lifting long plate 58, two installation blocks 55 are slidably connected in the long sliding groove 56, a strong spring 57 is connected between the installation blocks 55 and the long sliding groove 56, a limit groove 60 is arranged in the installation blocks 55, a limit block 54 is slidably connected in the limit groove 60, a limit spring 59 is connected between the limit block 54 and the limit groove 60, the transverse screw rod 43 is further in threaded connection with a trigger block 42 slidably connected with the open slot 44, the top surface of the trigger block 42 is provided with a trigger slot 41, wherein a vertical sliding slot 45 is arranged in the support 35 on the left side, the vertical sliding slot 45 is communicated with the rotating plate 48 and the open slot 44, a trigger rod 46 is slidably connected in the vertical sliding slot 45, the trigger rod 46 is hinged with the rotating plate 48, the rotating plate 48 is hinged with a switch plate 69 capable of blocking the water outlet 34, so that the limit block 54 is pulled towards two sides, the mounting block 55 is moved towards two sides, the sealing of the high-precision material to be measured is clamped between the mounting blocks 55, then the sealing gap is aligned with the water outlet 34, then the lifting motor 37 is opened to drive the thread block 38 to move towards two sides, and the lifting long plate 58 is driven to move upwards through the hinge rod 39, thereby will close the good high accuracy material that awaits measuring tightly delivery port 34, trigger block 42 moves to the left this moment, erect spout 45 and drop in trigger groove 41, thereby through rotor plate 48 with switch plate 69 will delivery port 34 is opened, thereby has accomplished the fixed and early preparation work with the material that awaits measuring.
In addition, in one embodiment, the threads on the left and right sides of the cross bar 43 are reversed, so that the thread block 38 can be moved to both sides.
In addition, in one embodiment, the elastic membrane 62 is elastic, and the air pressure moves in the opposite direction.
In addition, in one embodiment, the pressure groove 67 is always communicated with the pressure groove 61, high-pressure gas is provided in the pressure groove 67, when the gas is not compressed, the gas pressure is the same as the elastic force of the measuring spring 63, the detection plate 66 is attached to the pressure groove 26, and the gas in the pressure groove 67 does not overflow.
In addition, in one embodiment, the switch board 69 can be pulled to the right by the gravity of the trigger rod 46, and the high-precision material to be measured can be fixed by the elastic force of the strong spring 57.
When the lateral measurement is needed, the limiting block 54 is pulled towards two sides, the mounting blocks 55 are moved towards two sides, the high-precision material to be measured is well sealed and clamped between the mounting blocks 55, then the gap of the sealing is aligned with the water outlet 34, then the lifting motor 37 is turned on, the thread blocks 38 are driven to move towards two sides, the long lifting plate 58 is driven to move upwards through the hinge rod 39, the high-precision material to be measured which is well sealed is tightly attached to the water outlet 34, the trigger block 42 moves towards the left, the vertical sliding groove 45 falls into the trigger groove 41, the water outlet 34 is opened through the rotating plate 48 and the switch plate 69, then the motor 22 is turned on, the screw rod sleeve 23 is driven to rotate, the vertical screw rod 25 and the lower pressing plate 53 move downwards, the starting rod 52 and the air pressure sliding block 68 are driven to press downwards, the elastic membrane 62 and the transverse moving block 65 move towards the left, and the measuring rod 64 is ejected out of the symmetrical block 27, when the pressure is increased, the water in the water outlet 34 flows out from the closed position of the high-precision material to be measured, the length of the measuring rod 64 is not changed, the detector 49 can read the extending length of the measuring rod 64, the length is displayed on the display block 51 through the electric wire 50, and when the water in the pressure tank 26 is used up and the detection plate 66 moves upwards, the water in the water tank 29 can be pumped into the pressure tank 26 through the water pipe 28.
The invention has the beneficial effects that: the invention has simple structure and convenient operation, can measure whether the sealed gap is qualified or not by using the sealed gap of the high-precision material, the water pressure and the air pressure, can use the high-strength air pressure to obtain the actual degree, and can measure the sealed point by using the high-strength water pressure, thereby overcoming the problem that the sealing degree of the high-precision material can not be measured by naked eyes or illumination and the like in the prior art.
Meanwhile, the device occupies a small area, is suitable for measurement of most workshops, and can measure the tightness of the materials by a simple principle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a material conformity degree detector based on high accuracy, includes the organism, its characterized in that: the bottom surface of the machine body is bilaterally symmetrically provided with a support, the bottom side of the support is fixedly provided with a base, the left side surface and the right side surface of the machine body are symmetrically provided with symmetrical blocks, a screw sleeve sliding groove is arranged in the machine body, the bottom wall of the screw sleeve sliding groove is provided with a pressure groove, and compression devices are arranged in the pressure groove and the screw sleeve sliding groove;
the compression device comprises a motor fixedly installed on the top wall of a sliding groove of the screw sleeve, the motor is connected with the screw sleeve which is connected with the sliding groove of the screw sleeve in a sliding manner, a vertical screw is connected with the screw sleeve in a threaded manner, the bottom surface of the vertical screw is fixedly provided with a lower pressing plate which is connected with a pressure groove in a sliding manner, the pressure groove is connected with a detection plate in a sliding manner, the detection plate is internally provided with a pressure groove, two pneumatic sliders are connected with the pressure groove in a sliding manner in a bilateral symmetry manner, the top surfaces of the pneumatic sliders are respectively and fixedly provided with a starting rod which is connected with the top wall of the pressure groove in a sliding manner, the starting rod extends upwards to penetrate through the top wall of the pressure groove to enter the pressure groove and is connected with the top surface of the detection plate in a;
the right side of overhead tank is equipped with the water tank, be equipped with the device of adding water in the water tank, the device of adding water is used for storing water, the left side wall of overhead tank is equipped with the atmospheric pressure groove, be equipped with the display device who is used for measuring the degree of closure result in the atmospheric pressure groove, the diapire of overhead tank is equipped with the delivery port, the left side of delivery port is equipped with the interlock chamber, be equipped with the lift groove in the base, the interlock chamber with be equipped with between the lift groove and be used for fixed fixing device.
2. The high-precision material conformity detector according to claim 1, characterized in that: the water adding device is composed of a water adding port, a water pipe, a baffle sliding groove, a baffle and a baffle spring, the water adding port is arranged on the top wall of the water tank, the water pipe communicated with the pressure groove is arranged on the left side wall of the water tank, the baffle sliding groove is arranged in the water pipe, the baffle is connected in the baffle sliding groove in a sliding mode, and the baffle spring is connected between the baffle and the baffle sliding groove in an up-and-down symmetrical mode.
3. The high-precision material conformity detector according to claim 1, characterized in that: the display device comprises an elastic membrane, a transverse moving block, a measuring spring, a measuring rod, a detector, a display block and an electric wire, wherein the elastic membrane is fixedly arranged in an air pressure groove, the transverse moving block is connected in the air pressure groove in a sliding manner, the measuring spring is connected between the transverse moving block and the air pressure groove, the left side surface of the transverse moving block is provided with the measuring rod which is in sliding connection with the left side wall and the left side wall of the air pressure groove, the left side surface of the symmetrical block is fixedly provided with the detector, the front side surface of the symmetrical block is fixedly provided with the display block, and the electric wire is connected between the display block and the detector.
4. The high-precision material conformity detector according to claim 1, characterized in that: the fixing device consists of a lifting motor, an open slot, a transverse screw rod, a thread block, a hinge rod, a fixing block, a lifting long plate, a long chute, an installation block, a strong spring, a limiting groove, a limiting block, a limiting spring, a trigger block, a trigger groove, a vertical chute, a trigger rod, a rotating plate and a switch plate, wherein the right side wall of the lifting groove is fixedly provided with the lifting motor, the left side wall of the lifting groove is provided with the open slot, the lifting motor is connected with the transverse screw rod which is rotationally connected with the left side wall of the open slot, the left side and the right side of the transverse screw rod are symmetrically and threadedly connected with the thread block, the hinge rod is hinged on the thread block, the hinge rod is hinged with the fixing block, the top surfaces of the two fixing blocks are fixedly connected with the lifting long plate, the lifting long chute is arranged in the lifting long plate, and the installation, the installation piece with be connected with between the long spout powerful spring, be equipped with in the installation piece the spacing groove, sliding connection has in the spacing groove the stopper, the stopper with be connected with between the spacing groove spacing spring, on the horizontal bar pole still threaded connection have with open slot sliding connection trigger the piece, trigger a top surface and be equipped with trigger the groove, wherein left be equipped with in the support erect the spout, erect the spout with the rotor plate with the open slot communicates with each other, sliding connection has in erecting the spout the trigger bar, articulated on the trigger bar have the rotor plate, articulated on the rotor plate have can with the delivery port blocks the switch board.
5. The high-precision material conformity detector according to claim 4, characterized in that: the threads on the left side and the right side of the transverse screw rod are opposite.
6. The high-precision material conformity detector according to claim 3, characterized in that: the elastic membrane has elasticity, and the air pressure atmosphere moves in the opposite direction.
7. The high-precision material conformity detector according to claim 3, characterized in that: the pressure groove is always communicated with the air pressure groove, high-pressure air is arranged in the pressure groove, when the air is not compressed, the air pressure of the air pressure groove is the same as the elastic force of the measuring spring, and the detection plate is attached to the pressure groove.
8. The high-precision material conformity detector according to claim 4, characterized in that: the gravity of the trigger rod can pull the switch board to the right, and the elasticity of the strong spring can fix the high-precision material to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488407.6A CN110057508B (en) | 2019-06-05 | 2019-06-05 | Material contact ratio detector based on high accuracy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488407.6A CN110057508B (en) | 2019-06-05 | 2019-06-05 | Material contact ratio detector based on high accuracy |
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| CN110057508A CN110057508A (en) | 2019-07-26 |
| CN110057508B true CN110057508B (en) | 2020-02-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065880A (en) * | 2001-08-23 | 2003-03-05 | Hazama Gumi Ltd | Inspection method and inspection system of water leak spot of building |
| CN201425539Y (en) * | 2009-05-04 | 2010-03-17 | 中山市正洲汽门有限公司 | Leakage detecting device for valve-seat face |
| CN205038028U (en) * | 2015-09-23 | 2016-02-17 | 同济大学 | Seam waterproof performance test device that shield tunnel multichannel line of defence stagnant water is sealed |
| CN205691293U (en) * | 2016-05-31 | 2016-11-16 | 上海市隧道工程轨道交通设计研究院 | A kind of flexible waterproof layer is at the waterproof test device of deformation joint |
| CN206573260U (en) * | 2017-03-24 | 2017-10-20 | 广州雅新金属制品有限公司 | A kind of steam vent detects the device of gas leakage |
-
2019
- 2019-06-05 CN CN201910488407.6A patent/CN110057508B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065880A (en) * | 2001-08-23 | 2003-03-05 | Hazama Gumi Ltd | Inspection method and inspection system of water leak spot of building |
| CN201425539Y (en) * | 2009-05-04 | 2010-03-17 | 中山市正洲汽门有限公司 | Leakage detecting device for valve-seat face |
| CN205038028U (en) * | 2015-09-23 | 2016-02-17 | 同济大学 | Seam waterproof performance test device that shield tunnel multichannel line of defence stagnant water is sealed |
| CN205691293U (en) * | 2016-05-31 | 2016-11-16 | 上海市隧道工程轨道交通设计研究院 | A kind of flexible waterproof layer is at the waterproof test device of deformation joint |
| CN206573260U (en) * | 2017-03-24 | 2017-10-20 | 广州雅新金属制品有限公司 | A kind of steam vent detects the device of gas leakage |
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| CN110057508A (en) | 2019-07-26 |
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Effective date of registration: 20200109 Address after: 518000 floor 1 and 3, building 18, industrial zone a, xiliguanlong village, Nanshan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Yitong Testing Technology Co., Ltd Address before: 324000 68-1 B District, No. 258 Huayuan East Road, Kecheng District, Quzhou, Zhejiang, 68-1 Applicant before: Quzhou Dai Yu Business Consulting Co., Ltd. |
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