CN108318184B - Automatic submerged leakage tester - Google Patents
Automatic submerged leakage tester Download PDFInfo
- Publication number
- CN108318184B CN108318184B CN201810123067.2A CN201810123067A CN108318184B CN 108318184 B CN108318184 B CN 108318184B CN 201810123067 A CN201810123067 A CN 201810123067A CN 108318184 B CN108318184 B CN 108318184B
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- Prior art keywords
- frame
- fixed
- lifting
- workpiece
- plugging
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- 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.)
- Expired - Fee Related
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims description 23
- 238000012360 testing method Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 229920005372 Plexiglas® Polymers 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- 230000007306 turnover Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 229920005439 Perspex® Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- 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
- G01M3/025—Details with respect to the testing of engines or engine parts
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
Abstract
The invention discloses an automatic submerged leak tester, which comprises a machine body, a turnover assembly, a plugging mechanism and a lifting positioning mechanism, wherein the turnover assembly is arranged on the machine body; the fuselage includes: the lifting device comprises a first frame, a lifting oil cylinder and a water tank; the overturning assembly comprises a turntable bearing, a second frame and a driving unit, the turntable bearing comprises a fixed ring and a rotating ring which are rotationally connected with each other, the two turntable bearings are respectively fixed on two sides of the second frame, the rotating ring is fixedly connected with the second frame, and the fixed ring is fixedly connected with the first frame; the driving unit is fixed on the first frame; the plugging mechanism and the lifting positioning mechanism are relatively fixed on the second frame, the lifting positioning mechanism is used for lifting the workpiece to a preset position, and the plugging mechanism is used for plugging the workpiece and simultaneously inflating the workpiece. By using the device, manual carrying and plugging can be omitted, labor can be saved, the working efficiency is improved, and the problem that workpieces can be observed only at a single angle in the prior art can be solved.
Description
Technical Field
The invention relates to the technical field of leak detection, in particular to an automatic submerged leak tester.
Background
The engine cylinder body, cylinder cap can aerify the leak test to oil duct and water course in the course of working, and the position of leaking is confirmed mainly to the unqualified work piece of leak test to the waterlogging caused by excessive rainfall leak test, is about to aerify the work piece and immerses in the water, judges the leak source through the position of bubble, and the waterlogging caused by excessive rainfall leak test is because the rate of utilization is low, and the beat is long, generally arranges off-line. The existing off-line submerged leakage test is generally carried out in a manual mode, an oil duct or a water duct of a workpiece is plugged through a manual plugging tool, the plugged workpiece is hung into a water tank, the workpiece is inflated through a quick-insertion inflation tube, and then leakage point judgment is carried out through the position of an air bubble. The workpiece needs to be manually lifted into a fixed position in the water tank and manually plugged, so that the working efficiency is low; in addition, the workpiece cannot be rotated, and single-angle observation is not beneficial to judging a missing point.
Disclosure of Invention
The invention aims to provide an automatic submerged leakage tester, which solves the technical problems, is convenient and reliable for workers to operate, improves the plugging and leakage testing efficiency, and realizes multi-angle observation of leakage points.
The invention provides an automatic submerged leakage tester, which comprises: the device comprises a machine body, a turnover assembly, a plugging mechanism and a lifting positioning mechanism; the fuselage includes: the water tank is driven to lift in the first frame by the lifting oil cylinder; the flip assembly includes: the turntable bearing comprises a fixed ring and a rotating ring, the fixed ring and the rotating ring are rotationally connected with each other, the rotating ring is positioned on the outer side of the fixed ring, the two turntable bearings are respectively fixed on two sides of the second frame, the rotating ring is fixedly connected with the second frame, and the fixed ring is fixedly connected with the first frame; the driving unit is fixed on the first frame and used for driving the rotating ring to rotate; the plugging mechanism and the lifting positioning mechanism are relatively fixed on the second frame, the lifting positioning mechanism is used for lifting a workpiece to a preset position, and the plugging mechanism is used for plugging the workpiece and simultaneously inflating the workpiece; during detection, the lifting oil cylinder drives the water tank to ascend until the workpiece is submerged in water, and the driving unit drives the rotating ring to rotate to drive the workpiece to rotate in the water so as to perform multi-angle leakage test.
Preferably, the driving unit comprises a motor and a gear, and the gear is fixed at the driving end of the motor; gear teeth are arranged on the outer side of the rotating ring and are in meshed connection with the gear.
Preferably, the lifting and positioning mechanism comprises: the lifting mechanism comprises a lifting cylinder and a lifting end, wherein the fixed end of the lifting cylinder is fixed on the lower side of the second frame, the driving end of the lifting cylinder extends into the second frame, and the lifting end is fixed at the end part of the driving end of the lifting cylinder.
Preferably, the lifting end comprises a blocking plate and a limiting block, and the limiting block is fixed on one side, far away from the lifting cylinder, of the blocking plate and used for limiting the movement of the workpiece.
Preferably, one side of the blocking plate facing the workpiece is provided with a closed convex ring, and the convex ring surrounds the outer side of the bottom opening of the workpiece.
Preferably, the occlusion mechanism comprises: the fixed end of the plugging cylinder is fixed on the upper side of the second frame, the driving end of the plugging cylinder extends into the second frame, and the plugging head is fixed at the end part of the driving end of the plugging cylinder.
Preferably, the water tank comprises a third frame and plexiglass, and the plexiglass is hermetically connected with the third frame.
Preferably, the water tank further comprises a pulley rotatably connected to an outer side wall of the third frame; the inner wall of the first frame is provided with a guide rail in the vertical direction, and the pulley is in sliding fit with the guide rail.
Preferably, automatic heavy water leakage tester still includes the fortune material platform, the fortune material platform is located the both sides of fuselage, the fortune material platform is including transporting roll table and fortune material subassembly, fortune material subassembly is fixed in one side of transporting the roll table is used for location and drive the work piece is followed the transportation roll table slides.
Preferably, the material handling assembly comprises: the fixing end of the pushing cylinder is transversely fixed on the side surface of the transfer roller way, the driving end of the pushing cylinder pushes the fixing end of the bolt cylinder to move along the transfer roller way, the driving end of the bolt cylinder is fixedly connected with the bolt plate, and the bolt cylinder drives the bolt plate to move along the vertical direction of the transfer roller way; and the bolt plate is provided with a positioning pin for positioning a workpiece.
The invention has the beneficial effects that:
the invention provides an automatic submerged leak tester, wherein a plugging mechanism and a lifting positioning mechanism are relatively fixed on a second frame, the lifting positioning mechanism is used for lifting a workpiece to a preset position, and the plugging mechanism is used for plugging the workpiece and simultaneously inflating the workpiece. During detection, the lifting oil cylinder drives the water tank to rise until a workpiece is submerged in water, and the driving unit drives the rotating ring to rotate to drive the workpiece to rotate in the water so as to perform multi-angle leakage testing. By using the device, manual carrying and plugging can be omitted, labor can be saved, the working efficiency is improved, and the problem that workpieces can be observed only at a single angle in the prior art can be solved.
Drawings
Fig. 1 is a schematic view of an automatic submersible leak tester provided in an embodiment of the present invention;
fig. 2 is a schematic partial structural diagram of an automatic submersible leak tester provided in an embodiment of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of a lift positioning mechanism;
FIG. 5 is a schematic view of a fuselage;
fig. 6 is a schematic view of a material handling assembly.
The reference numbers are as follows:
1-fuselage 11-first frame
111-guide rail 12-lifting oil cylinder
13-Water tank 131-third frame
132-plexiglass 133-pulley
2-tilting assembly 21-slewing bearing
211-fixed ring 212-rotating ring
2121-teeth 22-second frame
23-drive Unit 231-Motor
232-gear 24-transition roller way
3-plugging mechanism 31-plugging cylinder
32-plugging head 4-lifting positioning mechanism
41-lifting cylinder 42-lifting end
421-plugging plate 422-limiting block
423-cam 424-baffle
5-Material conveying platform 51-transfer roller way
52-material conveying assembly 521-pushing cylinder
522-bolt cylinder 523-bolt plate
524-positioning pin
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
As shown in fig. 1 to 6, an embodiment of the present invention provides an automatic submerged leakage tester, including: the device comprises a machine body 1, a turnover assembly 2, a plugging mechanism 3 and a lifting positioning mechanism 4. The body 1 includes: the lifting mechanism comprises a first frame 11, a lifting oil cylinder 12 and a water tank 13, wherein the lifting oil cylinder 12 drives the water tank 13 to lift in the first frame 11, an opening of the water tank 13 is formed in the upper portion, and in order to avoid interference between the water tank 13 and the overturning assembly 2 during lifting, the size of the opening of the water tank 13 needs to be larger than the outline size of the overturning assembly 2. The flip assembly 2 includes: two slewing bearing 21, second frame 22 and drive unit 23, slewing bearing 21 is including rotating the solid fixed ring 211 of connecting mutually and being located the swivel ring 212 in the solid fixed ring 211 outside, two slewing bearing 21 is fixed in respectively the both sides of second frame 22, swivel ring 212 with second frame 22 fixed connection, gu fixed ring 211 with first frame 11 fixed connection can make second frame 22 overturn in first frame 11. In order to facilitate the connection of the turntable bearing 21 with the first frame 11 and the second frame 22, a plurality of annular array mounting holes are formed on the side walls of the fixed ring 211 and the rotating ring 212, so that the installation is convenient. The driving unit 23 is fixed to the first frame 11 and is configured to drive the rotating ring 212 to rotate. The plugging mechanism 3 and the lifting positioning mechanism 4 are relatively fixed on the second frame 22, the lifting positioning mechanism 4 is used for lifting a workpiece to a preset position, and the plugging mechanism 3 is used for plugging the workpiece and simultaneously inflating the workpiece. During detection, the lifting oil cylinder 12 drives the water tank 13 to ascend until the workpiece is submerged in water, and the driving unit 23 drives the rotating ring 212 to rotate so as to drive the workpiece to rotate in the water and perform multi-angle leakage test. By using the device, manual carrying and plugging can be omitted, labor can be saved, the working efficiency is improved, and the problem that workpieces can be observed only at a single angle in the prior art can be solved.
The driving unit 23 can drive the rotation ring 212 to rotate in various forms, such as a common driving manner of a pulley. More preferably, however, as shown in fig. 2, the driving unit 23 includes a motor 231 and a gear 232, and the gear 232 is fixed to a driving end of the motor 231; gear teeth 2121 are arranged on the outer side of the rotating ring 212 and are in meshed connection with the gear 232. Through meshing transmission, the rotation can be more stable, and the controllability is higher.
As shown in fig. 3, further, the lifting and positioning mechanism 4 includes: the lifting device comprises a lifting cylinder 41 and a lifting end 42, wherein the fixed end of the lifting cylinder 41 is fixed on the lower side of the second frame 22, the driving end of the lifting cylinder 41 extends into the second frame 22, and the lifting end 42 is fixed on the end part of the driving end of the lifting cylinder 41. The lifting positioning mechanism 4 with the structure has the advantages of simple structure, convenient processing and small occupied space.
As shown in fig. 4, further, the lifting end 42 includes a blocking plate 421 and a limiting block 422, and the limiting block 422 is fixed to a side of the blocking plate 421 away from the lifting cylinder 41, so as to limit the movement of the workpiece, thereby improving the reliability of lifting the positioning mechanism 4.
Because the plugging plate 421 is in surface-to-surface contact with the opening end of the workpiece, a gap is easily generated, and the plugging effect is affected. Furthermore, a closed convex ring 423 is disposed on one side of the blocking plate 421 facing the workpiece, and the convex ring 423 surrounds the outside of the bottom opening of the workpiece. The convex ring 423 is of a linear structure, and is matched with a workpiece like a linear surface when the convex ring is contacted with the workpiece, so that the contact area of the convex ring and the workpiece is reduced, and the sealing effect on the workpiece is improved. In order to ensure that the lifting end 42 can accurately align the workpiece for positioning and lifting when the workpiece is fed, further, the lifting end 42 further comprises a baffle 424, the baffle 424 is fixed at one end of the blocking plate 421, which faces the workpiece and is conveyed out, so that the workpiece is limited, and the lifting end 42 is ensured to accurately limit the workpiece by matching with the limiting block 422.
The blocking mechanism 3 can take many forms and can be manually blocked, but more preferably, as shown in fig. 3, the blocking mechanism 3 comprises: the sealing device comprises a sealing cylinder 31 and a sealing head 32, wherein the fixed end of the sealing cylinder 31 is fixed on the upper side of the second frame 22, the driving end of the sealing cylinder 31 extends into the second frame 22, and the sealing head 32 is fixed at the end part of the driving end of the sealing cylinder 31. The plugging mechanism 3 is simple in structure, saves labor, has a good plugging effect, and can ensure that the plugging head 32 and a workpiece synchronously turn over when the turning assembly 2 turns over, so that the plugging reliability is improved. The automatic submerged leak tester needs to ensure that the plugging head 32 accurately aligns with the opening of the workpiece, preferably, guide posts are arranged in the plugging mechanism 3 and the lifting positioning mechanism 4, the driving ends of the lifting cylinder 41 and the plugging cylinder 31 are limited by the guide posts, the stroke precision of the lifting cylinder 41 and the plugging cylinder 31 is ensured, and the accuracy of plugging is improved.
As shown in fig. 5, further, the water tank 13 includes a third frame 131 and perspex 132, and the perspex 132 is hermetically connected to the third frame 131. Through setting up organic glass 132, can conveniently observe the leakage-testing condition of inside work piece from the water tank 13 outside multi-angle, improve the convenience that detects.
Further, the water tank 13 further comprises a pulley 133, and the pulley 133 is rotatably connected to an outer side wall of the third frame 131; the inner wall of the first frame 11 is provided with a guide rail 111 in the vertical direction, and the pulley 133 is in sliding fit with the guide rail 111, so that the lifting oil cylinder 12 drives the water tank 13 to move more stably and reliably.
As shown in fig. 1 again, further, automatic submerged leak tester still includes material transporting table 5, material transporting table 5 is located the both sides of fuselage 1, material transporting table 5 includes transportation roll table 51 and material transporting component 52, material transporting component 52 is fixed in one side of transportation roll table 51 is used for the location and the drive the work piece is followed transportation roll table 51 slides. During material conveying, the material conveying assembly 52 drives the workpiece to slide on the transfer roller way 51, and the workpiece slides in and slides out of the turnover assembly 2, so that labor is saved. Furthermore, a transition roller way 24 connected with the transfer roller way 51 is arranged on the second frame 22, and the transition roller way 24 is positioned on two sides of the lifting positioning mechanism 4, so that the transfer roller way 51 and the transition roller way 24 are ensured to be on the same horizontal plane, and smooth circulation of workpieces is ensured.
As shown in fig. 6, further, the material transporting assembly 52 includes: the device comprises a pushing cylinder 521, a latch cylinder 522 and a latch plate 523, wherein the fixed end of the pushing cylinder 521 is transversely fixed on the side surface of the transfer roller way 51, the driving end of the pushing cylinder 521 pushes the fixed end of the latch cylinder 522 to move along the transfer roller way 51, the driving end of the latch cylinder 522 is fixedly connected with the latch plate 523, and the latch cylinder 522 drives the latch plate 523 to move along the vertical direction of the transfer roller way 51; the latch plate 523 is provided with a positioning pin 524 for positioning a workpiece. The material conveying assembly 52 with the structure can automatically realize workpiece pressing and workpiece pushing, and improves the working efficiency.
The construction, features and functions of the present invention have been described in detail for the purpose of illustration and description, but the invention is not limited to the details of construction and operation, and is capable of other embodiments without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides an automatic immersible leak test machine which characterized in that includes:
a fuselage, the fuselage comprising: the water tank is driven to lift in the first frame by the lifting oil cylinder;
a flip assembly, the flip assembly comprising: the turntable bearing comprises a fixed ring and a rotating ring, the fixed ring and the rotating ring are rotationally connected with each other, the rotating ring is positioned on the outer side of the fixed ring, the two turntable bearings are respectively fixed on two sides of the second frame, the rotating ring is fixedly connected with the second frame, and the fixed ring is fixedly connected with the first frame; the driving unit is fixed on the first frame and used for driving the rotating ring to rotate;
the plugging mechanism and the lifting positioning mechanism are relatively fixed on the second frame, the lifting positioning mechanism is used for lifting a workpiece to a preset position, and the plugging mechanism is used for plugging the workpiece and simultaneously inflating the workpiece;
during detection, the lifting oil cylinder drives the water tank to ascend until the workpiece is submerged in water, the driving unit drives the rotating ring to rotate, the workpiece is driven to rotate in the water, and multi-angle leakage test is performed;
the lifting positioning mechanism comprises: the fixed end of the lifting cylinder is fixed at the lower side of the second frame, the driving end of the lifting cylinder extends into the second frame, and the lifting end is fixed at the end part of the driving end of the lifting cylinder;
the lifting end comprises a plugging plate and a limiting block, and the limiting block is fixed on one side of the plugging plate, which is far away from the lifting cylinder, and is used for limiting the movement of the workpiece;
a closed convex ring is arranged on one side, facing the workpiece, of the blocking plate, and the convex ring surrounds the outer side of the opening in the bottom surface of the workpiece; the lifting end (42) further comprises a baffle plate (424), and the baffle plate (424) is fixed at one end, facing the workpiece, of the plugging plate (421);
the automatic sinking leak tester also comprises a material conveying table, wherein the material conveying table is positioned on two sides of the machine body and comprises a transfer roller way and a material conveying assembly, and the material conveying assembly is fixed on one side of the transfer roller way and is used for positioning and driving the workpiece to slide along the transfer roller way;
a transition roller way connected with the transfer roller way is arranged on the second frame, and the transition roller way is positioned at two sides of the lifting positioning mechanism;
the fortune material subassembly includes: the fixing end of the pushing cylinder is transversely fixed on the side surface of the transfer roller way, the driving end of the pushing cylinder pushes the fixing end of the bolt cylinder to move along the transfer roller way, the driving end of the bolt cylinder is fixedly connected with the bolt plate, and the bolt cylinder drives the bolt plate to move along the vertical direction of the transfer roller way;
and the bolt plate is provided with a positioning pin for positioning a workpiece.
2. The automatic submersible leak tester according to claim 1, wherein the drive unit comprises a motor and a gear, the gear being fixed to a drive end of the motor;
gear teeth are arranged on the outer side of the rotating ring and are in meshed connection with the gear.
3. The automatic submersible leak tester according to claim 1, wherein the plugging mechanism comprises: the fixed end of the plugging cylinder is fixed on the upper side of the second frame, the driving end of the plugging cylinder extends into the second frame, and the blocking head is fixed at the end part of the driving end of the plugging cylinder.
4. The automatic submersible leak tester of claim 1 wherein the water tank comprises a third frame and plexiglass sealingly connected to the third frame.
5. The automatic submersible leak tester according to claim 4, wherein the water tank further comprises a pulley rotatably connected to an outer sidewall of the third frame;
the inner wall of the first frame is provided with a guide rail in the vertical direction, and the pulley is in sliding fit with the guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810123067.2A CN108318184B (en) | 2018-02-07 | 2018-02-07 | Automatic submerged leakage tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810123067.2A CN108318184B (en) | 2018-02-07 | 2018-02-07 | Automatic submerged leakage tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108318184A CN108318184A (en) | 2018-07-24 |
| CN108318184B true CN108318184B (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810123067.2A Expired - Fee Related CN108318184B (en) | 2018-02-07 | 2018-02-07 | Automatic submerged leakage tester |
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| Country | Link |
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| CN (1) | CN108318184B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738126A (en) * | 2019-02-28 | 2019-05-10 | 重庆飞康机械有限公司 | A kind of novel cylinder hood air tightness detection equipment |
| CN109883615A (en) * | 2019-03-22 | 2019-06-14 | 宁波斯贝科技缸套有限公司 | A kind of convertible cylinder body cover board water inspection equipment |
| CN110398324B (en) * | 2019-08-20 | 2024-03-15 | 浙江海科信智能科技有限公司 | Automatic overturning detection mechanism |
| CN110455462B (en) * | 2019-08-20 | 2021-04-09 | 浙江海科信智能科技有限公司 | Automatic detection equipment for filter |
| CN111337200A (en) * | 2019-12-31 | 2020-06-26 | 中国重汽集团杭州发动机有限公司 | Engine cylinder cover leakage testing device |
| CN113063548A (en) * | 2021-05-18 | 2021-07-02 | 广州市嘉特斯机电制造有限公司 | Cylinder body leakage tester |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2559976Y (en) * | 2002-08-22 | 2003-07-09 | 中国扬子集团设备模具制造有限公司 | Pressuire leakage testing machine for water heater |
| CN202748205U (en) * | 2012-07-11 | 2013-02-20 | 马恒达悦达（盐城）拖拉机有限公司 | Air-tightness testing system of tractor box body |
| CN203011638U (en) * | 2012-12-19 | 2013-06-19 | 山东省农业机械科学研究所 | Sprayer sealing performance inclining test device |
| CN205826230U (en) * | 2016-06-27 | 2016-12-21 | 广州市恒宇印铁制罐有限公司 | A kind of water-bath type leakage detection apparatus of inhalator jar |
-
2018
- 2018-02-07 CN CN201810123067.2A patent/CN108318184B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN108318184A (en) | 2018-07-24 |
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