CN113008483B - Air tightness high-precision test bench for motor cover - Google Patents
Air tightness high-precision test bench for motor cover Download PDFInfo
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- CN113008483B CN113008483B CN202110236341.9A CN202110236341A CN113008483B CN 113008483 B CN113008483 B CN 113008483B CN 202110236341 A CN202110236341 A CN 202110236341A CN 113008483 B CN113008483 B CN 113008483B
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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
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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Abstract
The invention belongs to the technical field of air tightness testing, and particularly relates to an air tightness high-precision test board for a motor cover; one end of the test board body is provided with a tester, and the other end of the test board body is provided with a workbench; the upper end of the workbench is provided with a cylinder, and the lower end of the workbench is provided with an airtight tool; a fixed seat is arranged at the tail end of a piston rod of the air cylinder; the lower end of the fixed seat is fixed with four blocking rods; the detection module comprises a test paper board shell, a test paper board upper cover, wet bromothymol blue test paper and a plugging block; the lower end of the blocking rod is provided with a blocking block which can be detached; the wet bromothymol blue test paper is positioned in the test paper board shell; the upper cover of the test paper board is positioned above the wet bromothymol blue test paper; the lower end of the test paper board shell is unsealed, the unsealed area is smaller than the area of the wet bromothymol blue test paper, and the test paper board shell and the upper cover of the test paper board are both made of transparent materials; the invention solves the problems that the air leakage part of the test piece can be accurately tested and the waste of resources is avoided.
Description
Technical Field
The invention belongs to the technical field of air tightness tests, and particularly relates to an air tightness high-precision test board for a motor cover.
Background
At present, some of the product air tightness tests adopt water to carry out actual air tightness tests, and some of the product air tightness tests adopt water to actually test the product air tightness by adopting a pressure switch to carry out air tightness tests through air pressure, so that the product is possibly damaged to cause poor product functionality, and the product cannot be suitable for production and use on a large scale. The pressure switch is adopted to test the air tightness of the product, but the problems of poor stability, poor precision (the precision is more than or equal to 400 Pa), large resolution (the resolution is more than or equal to 100 Pa) and the like of the pressure switch exist, in the test process, the set value of the pressure is determined to be fixed, but the actual detection pressure value changes greatly, the product cannot be determined through the leakage pressure value, so that whether the product is qualified or not cannot be accurately determined, and further, the problem that the outflow of defective products is easy to cause customer complaints exists; the existing air tightness test can only judge whether a test piece has a leakage condition during detection, but cannot accurately judge a specific leakage position; based on the above, the invention designs the air tightness high-precision test bench for the motor cover to solve the problems.
Some technical schemes about gas tightness test have also appeared among the prior art, have disclosed a gas tightness test equipment as an application number CN 201410848337.8's a Chinese patent, including the frame, the frame includes workstation and workstation, its characterized in that, be provided with tester and cylinder on the workstation, the workstation is provided with airtight frock, the tester with airtight frock passes through the trachea and connects, airtight frock up end is seted up and is tested a shape of contact surface matched with mouth, the piston rod end of cylinder disposes the fixing base, the fixing base is fixed with closing device, airtight frock is located closing device below, closing device passes through the flexible of piston rod compresses tightly or loosens the test piece. The invention solves the problems of long test time, low test speed and low working efficiency in the filter airtightness test process and can not meet the airtightness test requirements of filters in large batches of enterprises.
Although the technology solves the problems of long testing time and low testing speed by arranging the pressing device; but the problem that the specific leakage position of the test piece cannot be determined in the detection process, so that the test piece cannot be repaired and reused and the resources are wasted is not solved.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problem that the specific leakage position of the test piece cannot be determined in the detection process, so that the test piece cannot be repaired and reused, and resources are wasted, the invention provides the air-tightness high-precision test bench for the motor cover.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an air tightness high-precision test board for a motor cover, which comprises a controller, a test board body, a workbench, a tester, an air cylinder, an air tightness tool, a blocking rod and an air pipe, wherein the controller is connected with the test board body; one end of the test board body is provided with a tester, and the other end of the test board body is provided with a workbench; the upper end of the workbench is provided with a cylinder, and the lower end of the workbench is provided with an airtight tool; the tester is connected with the airtight tool through an air pipe; the tail end of a piston rod at the lower end of the cylinder is provided with a fixed seat; a group of blocking rods is fixed at the lower end of the fixed seat; the air tightness high-precision test bench also comprises a detection module, a sealing module and a cleaning module; the detection module comprises a test paper board shell, a test paper board upper cover, wet bromothymol blue test paper and a blocking block; the lower end of each plugging rod is in threaded connection with a plugging block, and the plugging blocks can be detached; the wet bromothymol blue test paper is positioned in the test paper board shell; the upper cover of the test paper board is positioned above the wet bromothymol blue test paper; the lower end of the test paper board shell is not sealed, the area of the unsealed test paper board shell is smaller than that of the wet bromothymol blue test paper, and the test paper board shell and the upper cover of the test paper board are both made of transparent materials;
when the test device works, in the air tightness detection of the traditional technology, only whether a test piece has air leakage or not can be tested, and a specific air leakage part cannot be detected; so that the cable can not be repaired and reused, and the waste of resources is caused;
therefore, the invention arranges a detection module on the workbench; firstly, taking down the plugging block from the plugging rod, then placing the wet bromothymol blue test paper in a test paper board shell, then covering the test paper board shell, sleeving the test paper board shell, the test paper board upper cover and the wet bromothymol blue test paper into the plugging rod, and finally sleeving the plugging block at the lower end of the plugging rod; then, the test piece is placed on an airtight tool, and the air cylinder is controlled by the controller to drive the piston rod to move downwards, so that the air holes in the test piece are plugged by the plugging blocks on the plugging rods; then, filling carbon dioxide gas, observing whether the pressure on the tester changes, if so, observing the air leakage condition of the test piece, and then observing the specific color change position on the wet bromothymol blue test paper; the position of the wet bromothymol blue test paper changes from yellow to green and then changes from blue, so that the position has air leakage, and the position can be repaired and put into use again; after the detection is finished, the controller controls the air cylinder to drive the piston rod to move upwards, so that the blocking block on the blocking rod is separated from the test piece, and then the test piece is taken down to start the next round of test;
according to the invention, the charged gas is carbon dioxide, and the wet bromothymol blue test paper is placed above the test piece; the air leakage part of the test piece can be accurately tested, so that the part can be repaired and reused, and the waste of resources is avoided.
Preferably, the sealing module comprises a groove, an elastic rod, a sliding groove, a sliding strip and a sealing strip; the lower end of the workbench is provided with a groove; the airtight tool is placed in the groove; four sliding grooves are formed in the groove; the four sliding grooves correspond to the four sides of the airtight tool; a clamping groove is formed in the edge of the test paper board shell; the lower end of the elastic rod is positioned in the sliding groove, the lower end of the elastic rod is connected with the sliding groove in a sliding manner, one end of the elastic rod is clamped with the clamping groove in the edge of the test paper board shell, and the other end of the elastic rod is fixedly connected with the sliding strip; the sliding strip slides on the surface of the groove, and the other end of the upper part of the sliding strip is fixedly connected with a sealing strip; when the test device works, when the test piece is placed on the airtight tool, the problem that four sides of the test piece, which are in contact with the airtight tool, are easy to be sealed untight is easily caused, so that the test result of the tester is inaccurate; according to the invention, a closed module is arranged around the airtight tool; after the test piece is placed on the airtight tool, one end of the elastic rod is clamped with the test paper board shell, then the piston rod is driven to move downwards through the controller control cylinder, in the downward process of the piston rod, the blocking rod drives one end of the elastic rod to move downwards through driving the test paper board shell, so that the other end of the elastic rod slides along the sliding groove towards the airtight tool, and the other end of the elastic rod drives the sealing strip to move towards the position of the airtight tool through driving the sliding strip; when the plugging block on the plugging rod plugs the air vent on the test piece, the sealing strip also seals the contact part between the test piece and the airtight tool; after the test is finished, the controller controls the air cylinder to drive the piston rod to move upwards, then one end of the elastic rod is taken down from the test board shell, and finally the test piece is taken down; the testing accuracy of the air tightness testing platform is enhanced by arranging the sealing module.
Preferably, the cleaning module comprises a scraper and a connecting rod; one ends of the four sliding strips, which are far away from the airtight tool, are fixedly connected with two connecting rods; the other ends of every two connecting rods are fixedly connected with a scraper; when the cleaning device works, the cleaning module is arranged in the groove; when the sliding strip moves towards the direction of the airtight tool along with one end of the elastic rod, the sliding strip drives the scraper to move towards the direction of the airtight tool by driving the connecting rod; when the sliding strip moves along with one end of the elastic rod towards the direction far away from the airtight tool, the sliding strip drives the scraper to move towards the direction far away from the airtight tool by driving the connecting rod; the scraper plate collects dust in the groove in a centralized manner; the cleanness of the surface of the air tightness test bench is improved by connecting a cleaning module to the sealing module.
Preferably, an annular dust deposition groove is formed in one end, far away from the airtight tool, of the groove and the sliding groove; an ash accumulation disc is arranged at the lower end of the ash accumulation groove; the ash deposition disc is connected with the lower end of the workbench in a sliding manner; when the dust collector works, the dust collecting groove and the dust collecting disc are arranged; when the sliding strip drives the scraper to move towards the dust collecting groove by driving the connecting rod, the dust in the groove enters the dust collecting disc through the dust collecting groove; after a period of time, the dust collecting disc can be drawn out from the lower end of the workbench to clean the dust in the workbench; the tidiness of the air tightness test bench is further improved.
Preferably, the blocking block is arranged in a T shape; the outer surface of the lower end of the plugging block is sleeved with an elastic ring; when the test piece is in work, the blocking block is arranged to be in a T-shaped shape, the upper part of the T-shaped shape can prevent gas from leaking from the edge, so that the air holes are blocked more tightly, a certain distance can be reserved between the wet bromothymol blue test paper and the test piece, and the test piece is prevented from rusting due to the fact that the wet bromothymol blue test paper soaks the test piece; further improve gas tightness testboard test accuracy.
Preferably, the sealing strip is made of a silica gel sponge, and one end, facing the airtight tool, of the sealing strip is arranged into a wave shape; when the device works, the material of the sealing strip is set to be the silica gel sponge, and the sealing strip can be contacted with the contact part of the test piece and the air-tight tool more tightly through extrusion deformation; meanwhile, one end of the sealing strip, which is in contact with the sealing strip, is arranged into a wave shape, so that the sealing area of the sealing strip is increased; the test accuracy of the air tightness test bench is enhanced by enhancing the tightness of the air tightness test bench.
The invention has the following beneficial effects:
1. according to the air tightness high-precision test board for the motor cover, the air cylinder is controlled by the controller to drive the piston rod to move downwards, so that the air holes in a test piece are plugged by the plugging blocks on the plugging rods; then, filling carbon dioxide gas, observing whether the pressure on the tester changes, if so, observing the air leakage condition of the test piece, and then observing the specific color change position on the wet bromothymol blue test paper; the position of the wet bromothymol blue test paper changes from yellow to green and then changes from blue to green, so that the position has air leakage, and the position can be repaired and put into use again.
2. According to the airtight high-precision test board for the motor cover, in the process that the piston rod faces downwards, the blocking rod drives one end of the elastic rod to face downwards by driving the paper test board shell, so that the other end of the elastic rod slides towards the airtight tool along the sliding groove, and the other end of the elastic rod drives the sealing strip to move towards the airtight tool by driving the sliding strip; when the plugging block on the plugging rod plugs the air holes on the test piece, the sealing strip also seals the contact part between the test piece and the airtight tool.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
in the figure: the device comprises a test bench body 1, a workbench 2, a tester 3, a cylinder 4, an airtight tool 7, a blocking rod 8, an air pipe 9, a detection module 10, a test paper board shell 101, a test paper board upper cover 102, wet bromothymol blue test paper 103, a blocking block 104, a sealing module 11, a groove 111, an elastic rod 112, a sliding groove 113, a sliding strip 114, a sealing strip 115, a cleaning module 12, a scraper 121, a connecting rod 122, an ash accumulation groove 13, an ash accumulation disc 14 and an elastic ring 15.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the air-tightness high-precision test bench for the motor cover comprises a controller, a test bench body 1, a workbench 2, a tester 3, an air cylinder 4, an air-tightness tool 7, a plugging rod 8 and an air pipe 9; one end of the test board body 1 is provided with a tester 3, and the other end of the test board body 1 is provided with a workbench 2; the upper end of the workbench 2 is provided with a cylinder 4, and the lower end of the workbench 2 is provided with an airtight tool 7; the tester 3 is connected with the airtight tool 7 through an air pipe 9; a fixed seat 6 is arranged at the tail end of a piston rod 5 at the lower end of the cylinder 4; a group of blocking rods 8 are fixed at the lower end of the fixed seat 6; the air tightness high-precision test bench further comprises a detection module 10, a sealing module 11 and a cleaning module 12; the detection module 10 comprises a test paper board shell 101, a test paper board upper cover 102, wet bromothymol blue test paper 103 and a blocking block 104; the lower end of each plugging rod 8 is in threaded connection with a plugging block 104, and the plugging blocks 104 are detachable; the wet bromothymol blue test paper 103 is positioned in the test paper board shell 101; the upper cover 102 of the test paper board is positioned above the wet bromothymol blue test paper 103; the lower end of the group of blocking rods 8 is sleeved with the test paper board shell 101 and is positioned above the blocking block 104, the lower end of the test paper board shell 101 is not closed, the area of the non-closed test paper board shell 101 is smaller than that of the wet bromine thymol blue test paper 103, and the test paper board shell 101 and the test paper board upper cover 102 are both made of transparent materials;
when the air tightness test device works, in the air tightness test of the traditional technology, only whether the test piece has air leakage or not can be tested, and the specific air leakage part cannot be detected; so that the cable can not be repaired and reused, thereby causing resource waste;
therefore, the invention arranges a detection module 10 on the workbench 2; firstly, taking the blocking block 104 off the blocking rod 8, then placing the wet bromothymol blue test paper 103 in the test paper board shell 101, then covering the test paper board upper cover 102, sleeving the test paper board shell 101, the test paper board upper cover 102 and the wet bromothymol blue test paper 103 into the blocking rod 8, and finally sleeving the blocking block 104 on the lower end of the blocking rod 8; then, a test piece is placed on the airtight tool 7, and the air cylinder 4 is controlled by the controller to drive the piston rod 5 to move downwards, so that the air holes in the test piece are blocked by the blocking blocks 104 on the blocking rods 8; then, filling carbon dioxide gas, observing whether the pressure on the tester 3 changes, if so, observing the air leakage condition of the test piece, and then observing the specific color change position on the wet bromothymol blue test paper 103; the position of the wet bromothymol blue test paper 103 changes from yellow to green and then changes from blue to green, so that the position has air leakage, and the position can be repaired and put into use again; after the detection is finished, the controller controls the air cylinder 4 to drive the piston rod 5 to move upwards, so that the blocking block 104 on the blocking rod 8 is separated from the test piece, and then the test piece is taken down to start the next round of test;
according to the invention, the charged gas is carbon dioxide, and the wet bromothymol blue test paper 103 is placed above the test piece; the air leakage part of the test piece can be accurately tested, so that the part can be repaired and reused, and the waste of resources is avoided.
As an embodiment of the present invention, the closing module 11 includes a groove 111, an elastic rod 112, a sliding groove 113, a sliding strip 114, and a sealing strip 115; the lower end of the workbench 2 is provided with a groove 111; the airtight tool 7 is placed in the groove 111; four sliding grooves 113 are formed in the groove 111; the four sliding chutes 113 correspond to the four sides of the airtight tool 7; a clamping groove is formed in the edge of the paper test board shell 101; the lower end of the elastic rod 112 is positioned in the sliding groove 113, the lower end of the elastic rod 112 is connected with the sliding groove 113 in a sliding manner, one end of the elastic rod 112 is clamped with the clamping groove at the edge of the test paper board shell 101, and the other end of the elastic rod 112 is fixedly connected with the sliding strip 114; the sliding strip 114 slides on the surface of the groove 111, and the other end of the upper part of the sliding strip 114 is fixedly connected with a sealing strip 115; when the tester works, when a test piece is placed on the airtight tool 7, the problem that four sides of the test piece, which are in contact with the airtight tool 7, are easy to be sealed untight is caused, so that the test result of the tester 3 is inaccurate; according to the invention, a closed module 11 is arranged around an airtight tool 7; after the test piece is placed on the airtight tool 7, one end of the elastic rod 112 is clamped with the test paper board shell 101, then the piston rod 5 is driven to move downwards by the controller control cylinder 4, in the downward process of the piston rod 5, the blocking rod 8 drives one end of the elastic rod 112 to move downwards by driving the test paper board shell 101, so that the other end of the elastic rod 112 slides towards the airtight tool 7 along the sliding groove 113, and the other end of the elastic rod 112 drives the sealing strip 115 to move towards the airtight tool 7 by driving the sliding strip 114; when the plugging block 104 on the plugging rod 8 plugs the air vent on the test piece, the sealing strip 115 also seals the contact part between the test piece and the airtight tool 7; after the test is finished, the controller controls the cylinder 4 to drive the piston rod 5 to move upwards, then one end of the elastic rod 112 is taken down from the test board shell, and finally the test piece is taken down; the test accuracy of the air tightness test bench is enhanced by arranging the sealing module.
As an embodiment of the present invention, the cleaning module 12 includes a scraper 121 and a connecting rod 122; two connecting rods 122 are fixedly connected to one ends of the four sliding strips 114 far away from the airtight tool 7; the other ends of every two connecting rods 122 are fixedly connected with scrapers 121; when the cleaning device works, the cleaning module 12 is arranged in the groove 111; when the sliding bar 114 moves towards the direction of the airtight tool 7 along with one end of the elastic rod 112, the sliding bar 114 drives the scraper 121 to move towards the direction of the airtight tool 7 by driving the connecting rod 122; when the sliding bar 114 moves along with one end of the elastic rod 112 in a direction away from the airtight tool 7, the sliding bar 114 drives the scraper 121 to move in a direction away from the airtight tool 7 by driving the connecting rod 122; the scraper 121 collects dust in the groove 111; the cleanliness of the surface of the airtight test stand is improved by attaching a cleaning module 12 to the closing module 11.
As an embodiment of the present invention, an annular dust collecting groove 13 is formed at one end of the groove 111, which is far away from the airtight tool 7, and the sliding groove 113; an ash deposition disc 14 is arranged at the lower end of the ash deposition groove 13; the ash deposition disc 14 is connected with the lower end of the workbench 2 in a sliding way; when the dust collector works, the dust collecting groove 13 and the dust collecting disc 14 are arranged; when the sliding bar 114 drives the scraper 121 to move towards the dust collecting groove 13 by driving the connecting rod 122, the dust in the groove 111 enters the dust collecting tray 14 through the dust collecting groove 13; after a period of time, the dust-collecting disc 14 can be drawn out from the lower end of the workbench 2 to clean the dust in the workbench; the tidiness of the air tightness test bench is further improved.
As an embodiment of the present invention, the plugging block 104 is provided in a "T" shape; an elastic ring 15 is sleeved on the outer surface of the lower end of the blocking block 104; when the test piece is in work, the blocking block 104 is arranged to be in a T-shaped shape, the upper part of the T-shaped shape can prevent gas from leaking from the edge, so that the air holes are blocked more tightly, a certain distance can be reserved between the wet bromothymol blue test paper 103 and the test piece, and the test piece is prevented from rusting due to the fact that the test piece is wetted by the wet bromothymol blue test paper 103; further improve gas tightness testboard test accuracy.
As an embodiment of the present invention, the sealing strip 115 is made of a silicone sponge, and one end of the sealing strip 115 facing the airtight tool 7 is provided with a wave shape; when the device works, the sealing strip 115 is made of the silica gel sponge, so that the sealing strip 115 can be contacted with the contact part of the test piece and the airtight tool 7 more tightly through extrusion deformation; meanwhile, the contact end of the sealing strip 115 is arranged into a wave shape, so that the sealing area of the sealing strip 115 is increased; the test accuracy of the air tightness test bench is enhanced by enhancing the tightness of the air tightness test bench.
When the air tightness test device works, in the air tightness test of the traditional technology, only whether the test piece has air leakage or not can be tested, and the specific air leakage part cannot be detected; so that the cable can not be repaired and reused, thereby causing resource waste; therefore, the invention arranges a detection module 10 on the workbench 2; firstly, taking the blocking block 104 off the blocking rod 8, then placing the wet bromothymol blue test paper 103 in the test paper board shell 101, then covering the test paper board upper cover 102, sleeving the test paper board shell 101, the test paper board upper cover 102 and the wet bromothymol blue test paper 103 into the blocking rod 8, and finally sleeving the blocking block 104 on the lower end of the blocking rod 8; then, a test piece is placed on the airtight tool 7, and the air cylinder 4 is controlled by the controller to drive the piston rod 5 to move downwards, so that the air holes in the test piece are blocked by the blocking blocks 104 on the blocking rods 8; then, filling carbon dioxide gas, observing whether the pressure on the tester 3 changes, if so, observing the air leakage condition of the test piece, and then observing the specific color change position on the wet bromothymol blue test paper 103; the position of the wet bromothymol blue test paper 103 changes color from yellow to green and then to blue, so that the position has air leakage, and the position can be repaired and put into use again; after the detection is finished, the controller controls the air cylinder 4 to drive the piston rod 5 to move upwards, so that the blocking block 104 on the blocking rod 8 is separated from the test piece, and then the test piece is taken down to start the next round of test; because the invention sets the gas as carbon dioxide, the wet bromothymol blue test paper 103 is placed above the test piece; the air leakage part of the test piece can be accurately tested, so that the part can be repaired and reused, and the waste of resources is avoided; when the test piece is placed on the airtight tool 7, the problem that four sides of the test piece, which are in contact with the airtight tool 7, are not sealed tightly easily occurs, so that the test result of the tester 3 is inaccurate; according to the invention, a closed module 11 is arranged around an airtight tool 7; after a test piece is placed on the airtight tool 7, one end of the elastic rod 112 is clamped with the test paper board shell 101, then the piston rod 5 is driven to move downwards by the controller controlling the cylinder 4, and in the process that the piston rod 5 moves downwards, the blocking rod 8 drives one end of the elastic rod 112 to move downwards by driving the test paper board shell 101, so that the other end of the elastic rod 112 slides towards the airtight tool 7 along the chute 113, and the other end of the elastic rod 112 drives the sealing strip 115 to move towards the airtight tool 7 by driving the sliding strip 114; when the plugging block 104 on the plugging rod 8 plugs the air vent on the test piece, the sealing strip 115 also seals the contact part between the test piece and the airtight tool 7; after the test is finished, the controller controls the air cylinder 4 to drive the piston rod 5 to move upwards, then one end of the elastic rod 112 is taken down from the test board shell, and finally the test piece is taken down; the test accuracy of the air tightness test bench is enhanced by arranging the sealing module; because the invention provides a cleaning module 12 in the groove 111; when the sliding bar 114 moves towards the direction of the airtight tool 7 along with one end of the elastic rod 112, the sliding bar 114 drives the scraper 121 to move towards the direction of the airtight tool 7 by driving the connecting rod 122; when the sliding bar 114 moves along with one end of the elastic rod 112 in a direction away from the airtight tool 7, the sliding bar 114 drives the scraper 121 to move in a direction away from the airtight tool 7 by driving the connecting rod 122; the scraper 121 collects dust in the groove 111; the cleanness of the surface of the airtight test bench is improved by connecting a cleaning module 12 to the closed module 11; therefore, the invention is provided with the ash depositing groove 13 and the ash depositing disc 14; when the sliding bar 114 drives the scraper 121 to move towards the dust collecting groove 13 by driving the connecting rod 122, the dust in the groove 111 enters the dust collecting tray 14 through the dust collecting groove 13; after a period of time, the dust-collecting disc 14 can be drawn out from the lower end of the workbench 2 to clean the dust in the workbench; the tidiness of the air tightness test board is further improved; because the blocking block 104 is arranged to be in the T-shaped shape, the upper part of the T-shaped shape can prevent gas from leaking from the edge, so that the air holes are blocked more tightly, a certain distance can be reserved between the wet bromothymol blue test paper 103 and a test piece, and the test piece is prevented from being rusted due to the fact that the test piece is wetted by the wet bromothymol blue test paper 103; the test accuracy of the air tightness test bench is further improved; in addition, because the sealing strip 115 is made of the silica gel sponge, the sealing strip 115 can be contacted with the contact part of the test piece and the airtight tool 7 more tightly through extrusion deformation; meanwhile, the contact end of the sealing strip 115 is arranged into a wave shape, so that the sealing area of the sealing strip 115 is increased; the test accuracy of the air tightness test bench is enhanced by enhancing the tightness of the air tightness test bench.
The front, the back, the left, the right, the upper and the lower are based on the observation angle of the person, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A gas tightness high-precision test board for a motor cover comprises a controller, a test board body (1), a workbench (2), a tester (3), a cylinder (4), a piston rod (5), a fixed seat (6), a gas tightness tool (7), a blocking rod (8) and a gas pipe (9); one end of the test board body (1) is provided with a tester (3), and the other end of the test board body (1) is provided with a workbench (2); the upper end of the workbench (2) is provided with a cylinder (4), and the lower end of the workbench (2) is provided with an airtight tool (7); the tester (3) is connected with the airtight tool (7) through an air pipe (9); a fixed seat (6) is arranged at the tail end of a piston rod (5) at the lower end of the air cylinder (4); a group of blocking rods (8) is fixed at the lower end of the fixed seat (6);
the method is characterized in that: the air tightness high-precision test bench further comprises a detection module (10), a sealing module (11) and a cleaning module (12); the detection module (10) comprises a test paper board shell (101), a test paper board upper cover (102), wet bromothymol blue test paper (103) and a blocking block (104); the lower end of each plugging rod (8) is in threaded connection with a plugging block (104), and the plugging blocks (104) are detachable; the wet bromothymol blue test paper (103) is positioned in the test paper board shell (101); the upper cover (102) of the test paper board is positioned above the wet bromothymol blue test paper (103); the lower end of the group of blocking rods (8) is sleeved with the test paper board shell (101) and located above the blocking block (104), the lower end of the test paper board shell (101) is unsealed, the unsealed area is smaller than the area of the wet bromothymol blue test paper (103), and the test paper board shell (101) and the test paper board upper cover (102) are made of transparent materials;
the sealing module (11) comprises a groove (111), an elastic rod (112), a sliding groove (113), a sliding strip (114) and a sealing strip (115); the lower end of the workbench (2) is provided with a groove (111); the airtight tool (7) is placed in the groove (111); four sliding grooves (113) are formed in the groove (111); the four sliding grooves (113) correspond to the four sides of the airtight tool (7); a clamping groove is formed in the edge of the paper test board shell (101); the lower end of the elastic rod (112) is positioned in the sliding groove (113), the lower end of the elastic rod (112) is in sliding connection with the sliding groove (113), one end of the elastic rod (112) is clamped with the clamping groove in the edge of the test paper board shell (101), and the other end of the elastic rod (112) is fixedly connected with the sliding strip (114); in the process that the piston rod (5) moves downwards, the paper test board shell (101) drives one end of the elastic rod (112) to move downwards, so that the other end of the elastic rod (112) slides towards the direction of the airtight tool (7) along the sliding groove (113); the sliding strip (114) slides on the surface of the groove (111), and the other end of the upper part of the sliding strip (114) is fixedly connected with a sealing strip (115).
2. The air-tightness high-precision test bench for the motor cover as claimed in claim 1, wherein: the cleaning module (12) comprises a scraper (121) and a connecting rod (122); one ends, far away from the airtight tool (7), of the four sliding strips (114) are fixedly connected with two connecting rods (122); the other end of the connecting rod (122) is fixedly connected with a scraper (121).
3. The air-tightness high-precision test bench for the motor cover as claimed in claim 1, wherein: an annular dust deposition groove (13) is formed in one end, far away from the airtight tool (7), of the groove (111) and the sliding groove (113); an ash tray (14) is arranged at the lower end of the ash accumulation groove (13); the ash deposition disc (14) is connected with the lower end of the workbench (2) in a sliding way.
4. The airtight high-precision test bench for the motor cover as claimed in claim 1, wherein: the blocking block (104) is arranged in a T shape; the outer surface of the lower end of the blocking block (104) is sleeved with an elastic ring (15).
5. The air-tightness high-precision test bench for the motor cover as claimed in claim 1, wherein: the material of sealing strip (115) is the silica gel sponge, and the one end of sealing strip (115) towards airtight frock (7) sets up into the wave.
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| CN202110236341.9A CN113008483B (en) | 2021-03-03 | 2021-03-03 | Air tightness high-precision test bench for motor cover |
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| CN202110236341.9A CN113008483B (en) | 2021-03-03 | 2021-03-03 | Air tightness high-precision test bench for motor cover |
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| CN113008483B true CN113008483B (en) | 2023-03-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116183142B (en) * | 2023-04-27 | 2023-08-11 | 浙江白鹿源科技有限公司 | Air tightness detection process for battery box |
| CN116609314B (en) * | 2023-07-19 | 2023-09-26 | 武汉睿奇生物工程有限公司 | Fluorescence detector |
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