CN111829728A - Motor cover air tightness test bench - Google Patents
Motor cover air tightness test bench Download PDFInfo
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- CN111829728A CN111829728A CN202010765822.4A CN202010765822A CN111829728A CN 111829728 A CN111829728 A CN 111829728A CN 202010765822 A CN202010765822 A CN 202010765822A CN 111829728 A CN111829728 A CN 111829728A
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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
- G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
- G01M3/14—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/146—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
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Abstract
The invention belongs to the technical field of test tables, and particularly relates to an air tightness test table for a motor cover, which comprises a rack; the test bench is characterized in that a test cavity is arranged in the middle of the bench, a pneumatic push rod is mounted on the top surface of the test cavity, a test tube is mounted at the bottom end of the pneumatic push rod, a return plate is connected to the top surface of the positioning plate, a return cavity is arranged in the return plate, sliding plates are respectively connected in the return cavity in a sliding manner, an electromagnet is mounted at the corner of the return cavity, a spray cavity is formed in the sliding plate, a first spray hole and a second spray hole are respectively formed in the side walls of the spray cavity and the return cavity, and a liquid storage box is mounted on the bottom surface of the test cavity on; according to the invention, the return plate and the sliding plate which are matched with each other are arranged, so that the soap liquid can be automatically sprayed to the periphery of the motor cover, the soap liquid does not need to be manually sprayed in a time-consuming and labor-consuming manner, and the practicability and convenience of the air tightness test bench in use are effectively improved.
Description
Technical Field
The invention belongs to the technical field of test tables, and particularly relates to an air tightness test table for a motor cover.
Background
The gas tightness test is one of density tests using gas as a pressurizing medium performed to prevent leakage of a pressure vessel. This is a pressure vessel that must be tested for gas tightness for those pressure vessels whose contents are extremely toxic, highly hazardous or are designed to not permit minor leaks. The air tightness test must be carried out until the hydraulic test is qualified. The containers qualified in the air pressure test can be generally free from the air tightness test or specified according to the design drawing. The gas used in the gas tightness test meets the requirements of the gas pressure test; and the motor cover also needs to be tested for air tightness before assembly.
The invention also provides technical schemes related to an air tightness test bench, for example, a Chinese patent with the patent number of 2019201375031, and provides a wiper motor air tightness detection device, aiming at solving the problems that the existing wiper motor air tightness test is finished manually in the whole process, the operation time is long, the pipe insertion and blocking procedures are complicated, and the production efficiency of a production line is restricted; the bracket is arranged at the top of the bottom frame and is provided with a motor clamp position; the sealing element is arranged on the lifting mechanism, a sealing port is formed in the bottom end of the sealing element, and the lifting mechanism can drive the sealing element to move up and down; the lifting mechanism drives the transverse moving mechanism and the sealing element to synchronously move up and down; the transverse moving mechanism drives the sealing inflating nozzle to transversely reciprocate. The air tightness test board of the wiper motor realizes the sealing of a gap between the shaft and the bearing and the sealing and ventilation of the air holes through the sealing piece and the sealing inflation nozzle, so that air leakage is avoided, and whether the wiper motor has air leakage flaws or not can be accurately obtained.
Although the technology can detect the air tightness of the wiper motor through the test table, the motor is usually required to be detached and problem points are determined when the motor is poor in air tightness, the detection passing rate and the production efficiency of the motor are greatly reduced, the air tightness problem existing after the motor is assembled is solved more effectively at the moment, the motor cover is usually required to be tested in advance before being assembled, the existing test table can detect the air tightness of the motor cover, when the motor cover is poor in air tightness and leakage points are required to be searched, the leakage points are usually searched by spraying soapy water around the motor cover at the moment, the operation is complex, the labor burden of workers is increased, and the problem of low efficiency exists.
In view of this, the invention provides an air tightness test bench for a motor cover, which is characterized in that the return plate and the sliding plate which are matched with each other are arranged, so that soap liquid can be automatically sprayed to the periphery of the motor cover, the soap liquid does not need to be manually sprayed in a time-consuming and labor-consuming manner, and the practicability and convenience of the air tightness test bench in use are effectively improved.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides the air tightness test bench for the motor cover, and the return plate and the sliding plate which are matched with each other are arranged, so that soap liquid can be automatically sprayed to the periphery of the motor cover, the soap liquid does not need to be manually sprayed in a time-consuming and labor-consuming manner, and the practicability and the convenience of the air tightness test bench in use are effectively improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a motor cover air tightness test bench comprises a rack; the test bench is characterized in that a test cavity is arranged in the middle of the bench, a pneumatic push rod is arranged on the top surface of the test cavity, a test tube is arranged at the bottom end of the pneumatic push rod, a positioning plate is connected to the bottom surface of the test cavity at the bottom end of the test tube, a return plate is connected to the top surface of the positioning plate, a return cavity is arranged in the return plate, sliding plates which are symmetrically distributed are slidably connected in each pipeline of the return cavity respectively, electromagnets which interact with the sliding plates are arranged at four corners of the return cavity respectively, one ends of the sliding plates, which are far away from each other, are connected with the electromagnets at one side respectively through springs, a liquid spraying cavity is arranged in the sliding plates, a group of uniformly distributed first spray holes are arranged on the side wall of the inner side of the liquid spraying cavity respectively, a second spray hole which is matched with the first spray hole is arranged on the side wall of the return cavity corresponding, the test bench is characterized in that a second communicating hole matched with the first communicating hole is formed in the side wall of the returning cavity corresponding to the first communicating hole, a cylindrical liquid storage box is mounted on the bottom surface of the test cavity on one side of the positioning plate, soap liquid is contained in the liquid storage box, a piston is assembled at the bottom end of the liquid storage box in an interference mode, a push rod is connected to the bottom end of the piston, the free end of the push rod penetrates through the bottom surface of the liquid storage box and is located at the bottom end of the liquid storage box, the top end of the liquid storage box is connected with the second communicating hole through a hose, a controller is arranged on the; during working, although the existing technology can detect the air tightness of the wiper motor through the test bench, when the air tightness of the motor is poor, the motor is usually required to be detached and a problem point is determined, so that the detection passing rate and the production efficiency of the motor are greatly reduced, at the moment, in order to more effectively reduce the air tightness problem existing after the motor is assembled, the air tightness of the motor cover is usually required to be tested in advance before the motor cover is assembled, and although the existing test bench can detect the air tightness of the motor cover, when the air tightness of the motor cover is poor and the leakage point is required to be searched, the leakage point is usually searched in a mode of spraying soapy water around the motor cover at the moment, so that the operation is complex, the labor burden of workers is increased, and the problem of low efficiency also exists; when the test bench works, the motor cover is firstly placed on the positioning plate and is pre-fixed, then the controller controls the pneumatic push rod to drive the test tube to move downwards, so that the test tube can be matched with the air holes on the motor cover and can be used for inflating and detecting the interior of the test tube, when the test bench tests that the motor cover has the problem of air leakage, the controller respectively controls the electromagnet to work and repel the sliding plate on one side of the electromagnet, so that the sliding plate slides in the square-shaped cavity under the action of the electromagnet, when the end parts of the two symmetrical sliding plates are mutually attached, the first spray hole on the sliding plate is aligned with and communicated with the second spray hole, the first communication hole moves to the position aligned with the second communication hole, then the push rod drives the piston to extrude the soap liquid in the liquid storage box, so that the soap liquid flows into the liquid spraying cavity through the hose and the two communicated communication holes, soap lye is followed inside spout of two orifices of intercommunication to around the motor lid of one side, confirms the leak source through observing the foaming condition of soap lye around the motor lid afterwards, no longer need the manual work to carry out the spraying that wastes time and energy with soap lye, practicality and convenience when using of effectual improvement gas tightness testboard.
Preferably, a supporting rod is rotatably connected to the side face, close to the sliding plate, of the electromagnet through a torsion spring, a magnetic block which acts on the electromagnet is connected to the free end of the supporting rod, a limiting rod is vertically connected to the side wall of the returning cavity on one side of the supporting rod, and when the supporting rod rotates to be attached to the end portion of the limiting rod, the supporting rod is parallel to the sliding plate, and the end portions of the supporting rod and the sliding plate are attached to each other; the during operation, in order to improve the stability of two orifices when the intercommunication, set up the bracing piece through the electro-magnet position department at the slide tip this moment, when the electro-magnet repels the slide, the electro-magnet can repel the magnetic block in step this moment, make the magnetic block drive the bracing piece and rotate to the one side that is close to the slide under the effect of electro-magnet, laminate mutually until the tip of bracing piece and gag lever post, the bracing piece is in parallel state with the slide this moment, the tip of bracing piece can laminate mutually with the tip of slide simultaneously, the bracing piece that parallels with the slide this moment can play the effect of keeping out to the tip of slide, prevent that the slide from taking place to slide and making the condition that the orifice of two intercommunications took place the dislocation under the impact of inside soap liquid, thereby the effectual stability of.
Preferably, a gap is formed between the side face of the outer end of the sliding plate and the side wall of the square-shaped cavity, the side walls of the sliding plate on the two sides of the first communicating hole are rotatably connected with rollers, and the side walls of the rollers are attached to the side wall of the square-shaped cavity; in the working process, in order to enable the sliding plate to slide in the square-shaped cavity more easily and stably, a gap is formed between the side face of the outer end of the sliding plate and the side wall of the square-shaped cavity, and the roller is arranged on the side wall of the sliding plate, so that the sliding plate can drive the roller to roll on the side wall of the square-shaped cavity when sliding, the situation that the sliding plate is difficult to slide or is stuck due to overlarge friction between the sliding plate and the side wall of the square-shaped cavity is reduced, the two ends of the gap between the two communicating holes can be plugged by the arranged roller, the phenomenon that excessive soap liquid flows into the gap to cause waste or influence on the working of the sliding plate is prevented, and the stability of the test table during working is further improved.
Preferably, the side wall of the return plate at the top end of the second spray hole is connected with a baffle, the free end of the baffle inclines towards one side of the second spray hole and can shield the second spray hole, the side wall of the return plate at the bottom end of the second spray hole is connected with a guide plate, and the free end of the guide plate inclines towards one side far away from the second spray hole; the during operation, in order to make soap lye can more effectually spray in the required position department of motor cover, position department through No. two orifice sets up baffle and deflector respectively this moment, make the baffle can shelter from No. two orifice spun soap lye, prevent that soap lye from spouting too fiercely and spraying outside the motor cover, thereby the waste of soap lye has been reduced, the soap lye of spraying on the baffle simultaneously can flow into the deflector, make soap lye can more fully effectual inflow to the required position department on the motor cover under the effect of deflector, the fertile soap utilization effect of soap lye has been improved greatly.
Preferably, the middle part of the top end of the liquid storage box is fixedly connected with a connecting rod, the bottom end of the connecting rod is rotatably connected with a rotary table, a group of rotary grooves which are uniformly distributed in an annular mode are arranged in the rotary table, inclined extrusion surfaces are arranged on the side faces of one end, corresponding to the rotary table in the circumferential direction, of the rotary grooves, and stirring plates which are uniformly distributed in an annular mode are connected to the upper end face and the lower end face of the rotary table respectively; the during operation, when promoting the piston on the push rod and when moving to the top of stock solution box, the soap lye on the piston flows in stock solution box inside from supreme down, soap lye exerts pressure from the extrusion face of the inside outflow of rotary trough to the slope this moment, make the extrusion face produce under the effect of external force and make carousel pivoted component force and make it rotate, thereby make the carousel can drive and mix the synchronous rotation of board and mix soap lye, make soap lye produce more foams before the blowout, thereby make the leak source on the motor lid more directly perceived and quick when the inspection.
Preferably, a sealing ring is arranged on the bottom surface of the liquid storage box connected with the push rod, and the push rod is arranged in the sealing ring in an interference fit manner and is connected with the sealing ring in a sliding manner; the during operation, through the sealed setting of stock solution box cavity with the piston bottom, when promoting the push rod and drive piston upward movement, the stock solution box cavity of piston bottom this moment is in the negative pressure state, when soap liquid sprays and finishes and no longer exerts pressure to the push rod, the piston resets under stock solution box bottom negative pressure cavity's effect this moment, make the piston that resets can drive remaining soap liquid backward flow in hose and the slide to the stock solution box, thereby make the soap liquid that flows back to in the stock solution box can obtain effectual stirring and blowout when using next time, soap liquid's result of use has further been improved.
The invention has the following beneficial effects:
1. according to the invention, the return plate and the sliding plate which are matched with each other are arranged, so that the soap liquid can be automatically sprayed to the periphery of the motor cover, the soap liquid does not need to be manually sprayed in a time-consuming and labor-consuming manner, and the practicability and convenience of the air tightness test bench in use are effectively improved.
2. According to the invention, the supporting rod is arranged at the position of the electromagnet at the end part of the sliding plate, so that the supporting rod can resist the end part of the sliding plate, the sliding of the sliding plate under the impact of internal soap liquid is prevented, and the two communicated spray holes are staggered, thereby effectively improving the stability of the test board in use.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic structural view of the return plate and the slide plate of the present invention in an operating state;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;
FIG. 5 is a schematic view of the structure of the liquid storage box of the present invention;
FIG. 6 is a perspective view of the turntable of the present invention;
in the figure: the device comprises a rack 1, a test cavity 11, a pneumatic push rod 12, a test tube 13, a positioning plate 14, a clip plate 2, an electromagnet 21, a spring 22, a support rod 23, a magnetic block 24, a limiting rod 25, a sliding plate 3, a liquid spray cavity 31, a first spray hole 32, a second spray hole 33, a first communicating hole 34, a second communicating hole 35, a gap 36, a roller 37, a baffle 38, a guide plate 39, a liquid storage box 4, a piston 41, a push rod 42, a hose 43, a connecting rod 5, a turntable 51, a rotary groove 52, a squeezing surface 53, a stirring plate 54 and a sealing ring 6.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following embodiments.
As shown in fig. 1-6, the air tightness test bench for the motor cover according to the present invention comprises a bench 1; the testing device is characterized in that a testing cavity 11 is arranged in the middle of the rack 1, a pneumatic push rod 12 is mounted on the top surface of the testing cavity 11, a testing tube 13 is mounted at the bottom end of the pneumatic push rod 12, a positioning plate 14 is connected to the bottom surface of the testing cavity 11 at the bottom end of the testing tube 13, a return plate 2 is connected to the top surface of the positioning plate 14, a return cavity is arranged in the return plate 2, sliding plates 3 which are symmetrically distributed are respectively connected in each pipeline of the return cavity in a sliding manner, electromagnets 21 which are in interaction with the sliding plates 3 are respectively mounted at four corners of the return cavity, one end of the sliding plate 3 which is far away from each other is respectively connected with the electromagnets 21 at one side through springs 22, a liquid spraying cavity 31 is arranged in the sliding plate 3, a group of uniformly distributed first spraying holes 32 are respectively arranged on the side wall of the inner side of the liquid spraying cavity 31, a second spraying, a first communicating hole 34 is formed in the side face, opposite to the first spray hole 32, of the liquid spraying cavity 31, a second communicating hole 35 matched with the first communicating hole is formed in the side wall of the returning cavity corresponding to the first communicating hole 34, a cylindrical liquid storage box 4 is installed on the bottom face of the testing cavity 11 on one side of the positioning plate 14, soap liquid is contained in the liquid storage box 4, a piston 41 is assembled at the bottom end of the inside of the liquid storage box 4 in an interference mode, a push rod 42 is connected to the bottom end of the piston 41, the free end of the push rod 42 penetrates through the bottom face of the liquid storage box 4 and is located at the bottom end of the liquid storage box, the top end of the liquid storage box 4 is connected with the second communicating hole 35 through a hose 43, and a controller is arranged; during working, although the existing technology can detect the air tightness of the wiper motor through the test bench, when the air tightness of the motor is poor, the motor is usually required to be detached and a problem point is determined, so that the detection passing rate and the production efficiency of the motor are greatly reduced, at the moment, in order to more effectively reduce the air tightness problem existing after the motor is assembled, the air tightness of the motor cover is usually required to be tested in advance before the motor cover is assembled, and although the existing test bench can detect the air tightness of the motor cover, when the air tightness of the motor cover is poor and the leakage point is required to be searched, the leakage point is usually searched in a mode of spraying soapy water around the motor cover at the moment, so that the operation is complex, the labor burden of workers is increased, and the problem of low efficiency also exists; when the test bench works, firstly, a motor cover is placed on the positioning plate 14 and is pre-fixed, then the controller controls the pneumatic push rod 12 to drive the test tube 13 to move downwards, so that the test tube 13 can be matched with the air holes on the motor cover and can be used for inflating and detecting the interior of the test tube, when the test bench tests that the motor cover has the air leakage problem, the controller respectively controls the electromagnet 21 to work and repel the sliding plate 3 on one side of the electromagnet 21, so that the sliding plate 3 slides in the square-shaped cavity under the action of the electromagnet 21, when the end parts of the two symmetrical sliding plates 3 are mutually attached, the first spray hole 32 on the sliding plate 3 is aligned with and communicated with the second spray hole 33, the first spray hole 34 moves to the position aligned with the second communication hole 35, and then the push rod 42 drives the piston 41 to extrude soap liquid in the liquid storage box 4, make soap lye flow into inside the hydrojet chamber 31 through two intercommunicating pores of hose 43 and intercommunication, soap lye is followed two inside spouts of orifice of intercommunication to the motor lid of one side around, confirm the leak source through observing the bubbling condition of soap lye around the motor lid afterwards, no longer need the manual work to carry out the spraying that wastes time and energy with soap lye, practicality and convenience of effectual improvement testboard when using.
As an embodiment of the invention, a support rod 23 is rotatably connected to the side surface of the electromagnet 21 close to the sliding plate 3 through a torsion spring, a magnetic block 24 which is acted with the electromagnet 21 is connected to the free end of the support rod 23, a limit rod 25 is vertically connected to the side wall of the returning cavity on one side of the support rod 23, and when the support rod 23 rotates to be attached to the end of the limit rod 25, the support rod 23 is parallel to the sliding plate 3 and the ends of the two are attached to each other; in order to improve the stability of the two spray holes during communication during operation, the support rod 23 is arranged at the position of the electromagnet 21 at the end part of the sliding plate 3, when the electromagnet 21 repels the slide plate 3, the electromagnet 21 can synchronously repel the magnetic block 24, the magnetic block 24 drives the support rod 23 to rotate towards one side close to the sliding plate 3 under the action of the electromagnet 21 until the support rod 23 is attached to the end part of the limit rod 25, at this time, the support rod 23 and the sliding plate 3 are in a parallel state, simultaneously the tip of bracing piece 23 can laminate mutually with slide 3's tip, and bracing piece 23 that parallels with slide 3 this moment can play the effect of keeping out to slide 3's tip, prevents that slide 3 from taking place to slide and making the condition that the orifice of two intercommunications took place the dislocation under the impact of inside soap lye to the effectual stability that improves the testboard when using.
As an embodiment of the invention, a gap 36 is arranged between the outer end side surface of the sliding plate 3 and the side wall of the rectangular-shaped cavity, and the side walls of the sliding plate 3 on both sides of the first communicating hole 34 are rotatably connected with rollers 37, and the side walls of the rollers 37 are attached to the side walls of the rectangular-shaped cavity; in the working process, in order to enable the sliding plate 3 to slide in the square-shaped cavity more easily and stably, at the moment, a gap 36 is formed between the outer end side face of the sliding plate 3 and the side wall of the square-shaped cavity, and the roller 37 is arranged on the side wall of the sliding plate 3, so that the sliding plate 3 can drive the roller 37 to roll on the side wall of the square-shaped cavity when sliding, the situation that the sliding plate 3 is difficult to slide or be stuck due to overlarge friction between the sliding plate 3 and the side wall of the square-shaped cavity is reduced, meanwhile, the two ends of the gap 36 between the two communicating holes can be plugged by the arranged roller 37, the phenomenon that too much soap liquid flows into the gap 36 to cause waste or influence on the work of the sliding plate 3 is prevented, and the stability of the test table during working is.
As an embodiment of the present invention, a baffle 38 is connected to a side wall of the clip plate 2 at the top end of the second nozzle hole 33, a free end of the baffle 38 is inclined to one side of the second nozzle hole 33 and can shield the second nozzle hole, a guide plate 39 is connected to a side wall of the clip plate 2 at the bottom end of the second nozzle hole 33, and a free end of the guide plate 39 is inclined to one side far away from the second nozzle hole 33; the during operation, in order to make soap lye can more effectually spray at the required position department of motor cover, do not set up baffle 38 and deflector 39 through the position punishment at No. two orifice 33 this moment, make baffle 38 can shelter from No. two orifice 33 spun soap lye, prevent that soap lye from spouting violently and spraying outside the motor cover, thereby the waste of soap lye has been reduced, the soap lye of spraying on baffle 38 simultaneously can flow into deflector 39, make soap lye can more fully effectual inflow to motor cover required position department under deflector 39's effect, the utilization effect of soap lye has been improved greatly.
As an embodiment of the present invention, the middle of the top end of the liquid storage box 4 is fixedly connected with a connecting rod 5, the bottom end of the connecting rod 5 is rotatably connected with a rotary table 51, a group of annularly and uniformly distributed rotary grooves 52 are arranged inside the rotary table 51, inclined extrusion surfaces 53 are respectively arranged on the side surfaces of one end of the rotary grooves 52 corresponding to the circumferential direction of the rotary table 51, and the upper and lower end surfaces of the rotary table 51 are respectively connected with annularly and uniformly distributed stirring plates 54; when the soap dispenser works, when the piston 41 on the push rod 42 is pushed to move towards the top end of the liquid storage box 4, soap liquid on the piston 41 flows from bottom to top in the liquid storage box 4, pressure is applied to the inclined extrusion surface 53 in the process that the soap liquid flows out of the interior of the rotary groove 52 at the moment, the extrusion surface 53 generates component force for promoting the rotary disc 51 to rotate under the action of external force and enables the rotary disc 51 to rotate, the rotary disc 51 can drive the stirring plate 54 to synchronously rotate and stir the soap liquid, more foams are generated before the soap liquid is sprayed out, and therefore a leakage point on the motor cover is more visual and rapid in inspection.
As an embodiment of the invention, a sealing ring 6 is installed on the bottom surface of the liquid storage box 4 connected with a push rod 42, and the push rod 42 is installed inside the sealing ring 6 in an interference manner and is connected with the sealing ring in a sliding manner; the during operation, 4 cavity seal settings of stock solution box through with piston 41 bottom, when promoting push rod 42 and drive piston 41 upward movement, 4 cavities of stock solution box of piston 41 bottom are in the negative pressure state this moment, when soap liquid sprays and finishes and no longer exerts pressure to push rod 42, piston 41 resets under the effect of 4 bottom negative pressure cavities of stock solution box this moment, make the piston 41 that resets can drive remaining soap liquid backward flow to stock solution box 4 in hose 43 and the slide 3, thereby make the soap liquid that flows back to in the stock solution box 4 can obtain effectual stirring and spout when using next time, the result of use of soap liquid has further been improved.
When the device works, firstly, the motor cover is placed on the positioning plate 14 and is pre-fixed, then the controller controls the pneumatic push rod 12 to drive the testing tube 13 to move downwards, so that the testing tube 13 can be matched with the air holes on the motor cover and can be used for inflating and detecting the interior of the testing tube, when the testing table tests that the motor cover has the air leakage problem, the controller respectively controls the electromagnet 21 to work and repel the sliding plate 3 on one side of the electromagnet 21, so that the sliding plate 3 slides in the square-shaped cavity under the action of the electromagnet 21, when the end parts of the two symmetrical sliding plates 3 are mutually attached, the first spray hole 32 on the sliding plate 3 is aligned with and communicated with the second spray hole 33, the first communication hole 34 moves to the position aligned with the second communication hole 35, then the push rod 42 drives the piston 41 to extrude the soap liquid in the liquid storage box 4, so that the soap liquid flows into the liquid spraying cavity 31 through the hose 43 and the two communicated communication holes, soap lye is followed inside spout of two orifices of intercommunication to around the motor lid of one side, confirms the leak source through observing the foaming condition of soap lye around the motor lid afterwards, no longer need the manual work to carry out the spraying that wastes time and energy with soap lye, practicality and convenience when using of effectual improvement gas tightness testboard.
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 given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A motor cover air tightness test bench comprises a bench (1); the method is characterized in that: the test device is characterized in that a test cavity (11) is arranged in the middle of the rack (1), a pneumatic push rod (12) is installed on the top surface of the test cavity (11), a test tube (13) is installed at the bottom end of the pneumatic push rod (12), a positioning plate (14) is connected to the bottom surface of the test cavity (11) at the bottom end of the test tube (13), a return plate (2) is connected to the top surface of the positioning plate (14), a return cavity is arranged inside the return plate (2), symmetrically-distributed sliding plates (3) are respectively connected to each pipeline of the return cavity in a sliding manner, electromagnets (21) which interact with the sliding plates (3) are respectively installed at four corners of the return cavity, one end, far away from each other, of each sliding plate (3) is respectively connected with the electromagnet (21) at one side through a spring (22), a liquid spraying cavity (31) is arranged inside the sliding plate (3), and a group of uniformly-distributed first spray holes (, the improved soap liquid soap dispenser is characterized in that a second spray hole (33) matched with the first spray hole (32) is formed in the side wall of the returning cavity corresponding to the first spray hole (32), a first communicating hole (34) is formed in the side face, opposite to the first spray hole (32), of the liquid spraying cavity (31), a second communicating hole (35) matched with the first communicating hole (34) is formed in the side wall of the returning cavity corresponding to the first communicating hole (34), a cylindrical liquid storage box (4) is installed on the bottom face of the test cavity (11) on one side of the positioning plate (14), soap liquid is arranged in the liquid storage box (4), a piston (41) is arranged at the bottom end of the liquid storage box (4) in an interference mode, a push rod (42) is connected to the bottom end of the piston (41), the free end of the push rod (42) penetrates through the bottom face of the liquid storage box (4) and is located at the bottom end of the liquid storage box, and the, the automatic test bench is characterized in that a controller is arranged on the bench (1) and used for controlling the automatic operation of the test bench.
2. The motor cover airtightness test bench according to claim 1, wherein: the utility model discloses a slide board, including electro-magnet (21), bracing piece (23) are connected with through torsional spring rotation on being close to the side of slide (3) in electro-magnet (21), the free end of bracing piece (23) is connected with magnetic block (24) that act on with electro-magnet (21) mutually, be connected with gag lever post (25) on the returning shape chamber lateral wall of bracing piece (23) one side perpendicularly, when bracing piece (23) rotate to the tip with gag lever post (25) laminating mutually, bracing piece (23) parallel with slide (3) and both tip laminating mutually.
3. The motor cover airtightness test bench according to claim 2, wherein: a gap (36) is arranged between the side face of the outer end of the sliding plate (3) and the side wall of the square-shaped cavity, the side walls of the sliding plate (3) on the two sides of the first communicating hole (34) are rotatably connected with rollers (37), and the side walls of the rollers (37) are attached to the side wall of the square-shaped cavity.
4. The motor cover airtightness test bench according to claim 1, wherein: be connected with baffle (38) on the shape board (2) lateral wall that returns on No. two orifice (33) tops, the free end of baffle (38) is to No. two orifice (33) one side slopes and can shelter from it, be connected with deflector (39) on the shape board (2) lateral wall that returns of No. two orifice (33) bottom, the free end of deflector (39) is to the one side slope of keeping away from No. two orifice (33).
5. The motor cover airtightness test bench according to claim 1, wherein: the top middle part of stock solution box (4) has linked firmly connecting rod (5), connecting rod (5) bottom is rotated and is connected with carousel (51), carousel (51) inside is provided with runner (52) of a set of annular equipartition, runner (52) all are provided with extrusion face (53) of slope on the one end side that carousel (51) circumference corresponds, just be connected with stirring board (54) of annular equipartition on the upper and lower both ends face of carousel (51) respectively.
6. The motor cover airtightness test bench according to claim 5, wherein: the sealing ring (6) is installed on the bottom surface of the liquid storage box (4) connected with the push rod (42), and the push rod (42) is installed inside the sealing ring (6) in an interference mode and is connected with the sealing ring in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010765822.4A CN111829728A (en) | 2020-08-03 | 2020-08-03 | Motor cover air tightness test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010765822.4A CN111829728A (en) | 2020-08-03 | 2020-08-03 | Motor cover air tightness test bench |
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| Publication Number | Publication Date |
|---|---|
| CN111829728A true CN111829728A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010765822.4A Withdrawn CN111829728A (en) | 2020-08-03 | 2020-08-03 | Motor cover air tightness test bench |
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| CN (1) | CN111829728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008483A (en) * | 2021-03-03 | 2021-06-22 | 浙江捷众科技股份有限公司 | Air tightness high-precision test bench for motor cover |
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2020
- 2020-08-03 CN CN202010765822.4A patent/CN111829728A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008483A (en) * | 2021-03-03 | 2021-06-22 | 浙江捷众科技股份有限公司 | Air tightness high-precision test bench for motor cover |
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Application publication date: 20201027 |
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