CN213180580U

CN213180580U - Motor sealing performance testing device

Info

Publication number: CN213180580U
Application number: CN202022616676.7U
Authority: CN
Inventors: 张儒锋; 余迪超; 洪浩瀚; 许镜河; 王勇煌; 李波; 姜德志
Original assignee: Upton Automation Systems Guangzhou Co ltd
Current assignee: Upton Automation Systems Guangzhou Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-05-11
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses a motor sealing performance testing device, which comprises a frame, wherein a horizontal workbench is arranged on the frame, and a motor tray, a Z-axis lifting mechanism and a volume filling block are arranged on the workbench; the top surface of the motor tray is provided with an accommodating groove for placing a motor shell; the Z-axis lifting mechanism comprises a plugging plate for plugging the top opening of the motor shell and a Z-axis driving device for driving the plugging plate to move along the Z-axis direction; the volume filling block is arranged on the bottom surface of the plugging plate or the volume filling block is arranged on the motor tray and is positioned in the accommodating groove; when the motor tray moves to a position right below the plugging plate, the Z-axis driving device drives the plugging plate to descend or ascend in the Z-axis direction, so that the plugging plate plugs or opens the top opening of the motor shell; when the top opening of the motor shell is plugged by the plugging plate, the volume filling block is positioned in the inner cavity of the motor shell; the utility model discloses need gas filled space in can reducing the motor housing inner chamber, improve efficiency of software testing.

Description

Motor sealing performance testing device

Technical Field

The utility model relates to a leakproofness detects technical field, concretely relates to motor leakproofness testing arrangement.

Background

With the increasing consumption of non-renewable resources, especially the consumption of petroleum resources, people have to think about the sustainable development of the automobile industry, and new energy automobiles become the mainstream of automobile development in decades before the new century and become the consensus of the automobile industry. The government of China also implements a plurality of high-tech development and research plans, including important special items of new energy automobiles. In recent years, China basically forms a new energy automobile power system technical platform and a new energy automobile technical standard system frame based assessment capability. However, compared with the international leading level, the technology of core parts of new energy automobiles needs to be improved, and the adopted motor has higher requirements based on the characteristics of the electric automobiles. The motor is a core part of a new energy automobile, and the motor is easy to heat in the working process and needs to be radiated in a water-cooling and air-cooling radiating mode, so that the whole motor needs to have the waterproof and sealing requirements, and a radiating water channel inside the motor needs to have the water leakage-proof and sealing requirements. The sealing performance test of the motor under low demand in the past is generally carried out by a soap liquid or water soaking method, so that the test efficiency is low, the productivity is low, and the dependence on operators is high; meanwhile, the quality and the precision of the test of the motor are influenced to a certain degree by manually reading test data and carrying out data analysis, calculation and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art not enough, one of the purposes of the utility model is to provide full-automatic motor leakproofness testing arrangement based on compressed air's lossless formula, it can automize and accomplish the shutoff of motor and press from both sides the dress, need gas-filled space in the reduction motor housing inner chamber, improve the reliability and the efficiency of test.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

a motor sealing test device comprises a rack, wherein a horizontal workbench is arranged on the rack, the length direction of the workbench is the X-axis direction, the width direction of the workbench is the Y-axis direction, and the height direction of the workbench is the Z-axis direction; the method is characterized in that:

the workbench is provided with a motor tray, a Z-axis lifting mechanism and a volume filling block;

the top surface of the motor tray is provided with an accommodating groove for placing a motor shell;

the Z-axis lifting mechanism comprises a plugging plate for plugging the top opening of the motor shell and a Z-axis driving device for driving the plugging plate to move along the Z-axis direction;

the volume filling block is arranged on the bottom surface of the plugging plate, or the volume filling block is arranged on the motor tray and is positioned in the accommodating groove;

when the motor tray moves to a position right below the plugging plate, the Z-axis driving device drives the plugging plate to descend or ascend in the Z-axis direction, so that the plugging plate plugs or opens the top opening of the motor shell; when the plugging plate plugs the top opening of the motor shell, the volume filling block is positioned in the inner cavity of the motor shell.

In an optional implementation mode, the device further comprises a Y-axis sliding mechanism, the Y-axis sliding mechanism comprises a guide rail and a Y-axis driving device, the guide rail is fixedly mounted on the workbench along the Y-axis direction, and a sliding block in sliding fit with the guide rail is arranged on the bottom surface of the motor tray; the Y-axis driving device drives the motor tray to slide on the guide rail along the Y-axis direction.

In an optional embodiment, the motor tray is further provided with a first test channel for communicating with a cooling water channel of the motor housing; and a second testing channel communicated with the inner cavity of the motor shell is also arranged on the motor tray.

In an optional embodiment, the apparatus further comprises a multi-pipe pressure flow coefficient testing apparatus, and the multi-pipe pressure flow coefficient testing apparatus comprises:

the main gas transmission pipeline assembly comprises a main gas transmission pipe, a one-way valve, a first pressure-stabilizing gas storage tank, a switch valve, a first pressure regulating valve and a filter, wherein the one-way valve, the first pressure-stabilizing gas storage tank, the switch valve, the first pressure regulating valve and the filter are sequentially arranged on the main gas transmission pipe along the gas transmission direction;

the system comprises two groups of test pipeline assemblies, a controller and a controller, wherein the test pipeline assemblies comprise a test air pipe, and a first electromagnetic valve, a second pressure regulating valve, a flow sensor and a pressure sensor which are sequentially arranged on the test air pipe along the air conveying direction; the air inlet ends of the test air pipes of the two groups of test pipeline assemblies are respectively connected with the air outlet end of the main air pipe, the air outlet end of one group of test air pipes is communicated with the air inlet of the first test channel, and the air outlet end of the other group of test air pipes is communicated with the air inlet of the second test channel.

In an optional embodiment, the filter further comprises a branch gas pipe, wherein the gas inlet end of the branch gas pipe is connected with the main gas pipe, and the joint of the branch gas pipe and the main gas pipe is positioned at the rear end of the filter along the gas conveying direction; the air outlet end of the branch air delivery pipe is externally connected with air using equipment.

A second pressure-stabilizing gas storage tank and a stop valve are sequentially arranged on the main gas transmission pipe along the gas transmission direction, and the second pressure-stabilizing gas storage tank is positioned at the rear end of the joint of the branch gas transmission pipe and the main gas transmission pipe along the gas transmission direction; the first pressure regulating valve is provided with a pressure gauge and a pressure switch.

In an optional embodiment, the device further comprises a gas source device;

the main gas transmission pipe comprises a first hose, a second hose, a first hard pipe, a third hose, a fourth hose, a second hard pipe and a multi-way pipe joint; the check valve is arranged on the first hose, and the air inlet end of the first hose is connected with the air outlet of the air source device; the air outlet end of the first hose is connected with the air inlet end of the multi-way pipe joint through a first pressure-stabilizing air storage tank, a second hose, a first hard pipe, a third hose, a second pressure-stabilizing air storage tank, a fourth hose and a second hard pipe in sequence; the switch valve, the first pressure regulating valve and the filter are arranged on the first hard pipe, and the stop valve is arranged on the second hard pipe;

the test air pipe comprises a third hard pipe, a fifth hose and a fourth hard pipe; the air inlet end of the third hard tube is connected with one of the air outlet ends of the multi-way tube joint, and the air outlet end of the third hard tube is connected with the air inlet end of the fourth hard tube through a fifth hose in sequence; the first electromagnetic valve, the second pressure regulating valve, the flow sensor and the pressure sensor are arranged on the third hard pipe; the switching valve, the first pressure regulating valve, the second pressure regulating valve and the flow sensor are all provided with mounting structures which are fixedly connected with the rack; the multi-way pipe joint is a three-way pipe with one inlet and two outlets; and a second electromagnetic valve is also arranged on the fourth hard tube.

In an optional embodiment, the Z-axis driving device includes four guide posts installed on the worktable, a guide plate slidably sleeved on the four guide posts, a cylinder fixing plate fixedly installed on the tops of the guide posts, and a down-pressing cylinder installed on the cylinder fixing plate; the top surface of the guide plate is fixedly connected with the lower end of a piston rod of the downward-pressing cylinder, and the plugging plate is fixedly arranged below the guide plate.

In an optional embodiment, the gas outlets of the first test channel and the second test channel are respectively provided with an outward expansion type sealing device, the outward expansion type sealing device comprises a sealing shell, a movable block, a plug and an elastic sealing ring, one end of the sealing shell is provided with a movable cavity, the other end of the sealing shell is provided with a sealing end, and the plug is mounted at the sealing end; the elastic sealing ring is clamped between the sealing end and the plug-in connector; the movable block is movably connected in the movable cavity in a penetrating mode and can move towards the position close to or far away from the sealing end; the plug is connected with the movable block and used for extruding the elastic sealing ring after the movable block moves away from the sealing end, so that the elastic sealing ring deforms outwards;

the outward expansion type sealing device also comprises a mounting seat, wherein the sealing shell is mounted on the mounting seat and is arranged at intervals with the sealing seat; the end part of the movable block is connected with the mounting seat through an elastic part; the elastic component is used for providing elastic stress for enabling the movable block to move close to the sealing end;

the outward expansion type sealing device also comprises a fixed arm fixedly arranged on the bottom surface of the guide plate and a driving piece fixedly arranged at the lower end of the fixed arm; the power output end of the driving piece is connected with the mounting seat.

In an optional implementation manner, a through hole is formed in the sealing end, the through hole penetrates through the movable cavity, a guide column is arranged at a part of the movable block close to the sealing end, the guide column movably penetrates through the through hole, and the plug-in connector is connected into the guide column through a connecting rod; one end of the connecting rod is provided with a limiting column, a limiting hole is formed in the guide column, and a first limiting step is arranged on the inner wall of the limiting hole; the outer surface of the limiting column is provided with a second limiting step, and the limiting column penetrates through the limiting hole; the second limiting step is used for being abutted against the first limiting step to prevent the connecting column from being separated from the guide column.

In an alternative embodiment, a first sealing ring is clamped between the outer surface of the movable block and the inner wall of the movable cavity; a second sealing ring is clamped between the outer surface of the guide column and the inner wall of the through hole; a driving channel is arranged in the movable block and penetrates into the movable cavity; the driving channel is used for introducing fluid to drive the movable block to move away from the sealing end; a gasket is sleeved outside the connecting rod and penetrates through the penetrating hole; the sealing end is provided with a pressing block, the connecting rod is connected in the pressing block in a penetrating mode, and one end of the connecting rod extends out of the pressing block and extends into the penetrating hole to be connected with the guide column; the other end of the connecting rod extends out of the pressing block and is connected with the plug-in connector; the elastic sealing ring is sleeved at the end part of the connecting rod close to the plug-in connector and clamped between the pressing block and the plug-in connector.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses a motor leakproofness testing arrangement's workstation is provided with motor tray, Z axle elevating system and volume filling block, in the course of the work, places motor casing in the recess that holds of motor tray, when the motor tray moved to under the closure plate, drives the closure plate by Z axle drive arrangement and descends or rises in Z axle direction for the closure plate shutoff or opens motor casing's top opening; when the top opening of the motor shell is plugged by the plugging plate, the volume filling block is positioned in the inner cavity of the motor shell; therefore, the utility model discloses can reduce the inflated space of needs in the motor housing inner chamber, improve efficiency of software testing, save test gas simultaneously, reduce the test cost.

2. The utility model discloses a multi-pipe pressure flow coefficient testing arrangement includes main gas transmission pipeline subassembly and the test pipeline subassembly more than two sets of, prepares the link, and the air supply is aerifyd to first steady voltage gas holder through the check valve, plays the effect of steady voltage, and after predetermined inflation time, gaseous through first air-vent valve carries out the pressure regulating, further guarantees the stability of atmospheric pressure, then through filter filtering moisture, avoids moisture to produce the influence to the test result. In the testing link, the pressure sensor detects the air pressure of the motor shell, the pressure sensor sends detected pressure information to the central controller, the central controller controls the opening of the second pressure regulating valve according to the pressure information fed back by the pressure sensor, so that the test air pipe maintains constant pressure, uniform-speed inflation can be realized in the process, the flow sensor is protected from exceeding the range, the flow of the motor shell is detected through the flow sensor, after the preset testing time, when the actual flow change value in the testing time reaches the preset flow change value prestored in the central controller, the motor shell is qualified, otherwise, the motor shell is unqualified. Therefore, the utility model discloses can carry out a plurality of motor casing tests simultaneously, have that stability is good, the test accuracy is good, advantage that efficiency of software testing is high.

3. The utility model discloses an outer formula sealing device that rises when sealing up, sealed end and the equal cartridge of bayonet joint are kept away from sealed end motion through the movable block afterwards to the measured pipeline that awaits measuring in to drive the bayonet joint and be close to sealed end motion, thereby extrude the elasticity sealing washer, the elasticity sealing washer can receive to produce outer formula deformation that rises after the extrusion when sealed, makes the inner wall in close contact with more of elasticity sealing washer and the measured pipeline that awaits measuring, thereby improves sealing performance.

Drawings

Fig. 1 is a perspective view of a motor sealability testing apparatus of an embodiment;

FIG. 2 is a perspective view of a motor tray and a blanking plate of an embodiment;

FIG. 3 is a perspective view of a motor tray of an embodiment;

fig. 4 is a perspective view of a motor housing of an embodiment;

figure 5 is another angled perspective view of the motor housing of the embodiment;

FIG. 6 is a schematic view showing a piping connection of the multi-pipe pressure flow coefficient test apparatus of the embodiment;

FIG. 7 is another schematic view of a piping connection of the multi-pipe pressure flow coefficient testing apparatus of the embodiment;

FIG. 8 is a schematic structural view of a multi-pipe pressure-flow coefficient test apparatus according to an embodiment;

FIG. 9 is a perspective view of an on-off valve, a first pressure regulating valve, and a filter according to an embodiment;

fig. 10 is a schematic structural view of the outward expansion type sealing device of the present invention;

fig. 11 is a partial structural schematic view of the outward expansion type sealing device of the present invention;

fig. 12 is a sectional view of the expanding seal device of the present invention.

In the figure: 101. a work table; 102. a motor tray; 1021. an accommodating recess; 1022. a first test channel; 1023. a second test channel; 103. a plugging plate; 104. a volume-filling block; 1051. a guide rail; 1052. a Y-axis drive device; 106. a guide post; 107. a guide plate; 108. a cylinder fixing plate; 109. pressing down the air cylinder; 110. a main gas delivery pipe; 111. a first hose; 112. a second hose; 113. a first rigid tube; 114. a third hose; 115. a fourth hose; 116. a second rigid tube; 117. a multi-way pipe joint; 120. a one-way valve; 130. a first pressure-stabilizing air storage tank; 140. an on-off valve; 150. a first pressure regulating valve; 151. a pressure gauge; 152. a pressure switch; 160. a filter; 170. a second pressure-stabilizing air storage tank; 180. a stop valve; 210. testing the air pipe; 211. a third rigid tube; 212. a fifth hose; 213. a fourth rigid tube; 220. a first solenoid valve; 230. a second pressure regulating valve; 240. a flow sensor; 250. a pressure sensor; 260. a second solenoid valve; 300. a branch gas pipe; 400. a motor housing; 500. an air supply device; 600. a mounting structure; 710. sealing the housing; 711. sealing the end; 720. a movable block; 721. a guide post; 7211. a limiting hole; 722. a drive channel; 723. a first seal ring; 724. a second seal ring; 725. a gasket; 730. a plug-in connector; 740. an elastic sealing ring; 750. a mounting seat; 760. a compression block; 770. a drive member; 780. an elastic member; 790. a connecting rod; 791. a limiting column.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of embodiments 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 exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and 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 present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.

In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example (b):

referring to fig. 1 to 12, a motor sealing performance testing apparatus includes a frame, a horizontal worktable 101 is disposed on the frame, a length direction of the worktable 101 is an X-axis direction, a width direction of the worktable is a Y-axis direction, and a height direction of the worktable is a Z-axis direction;

a motor tray 102, a Z-axis lifting mechanism and a volume filling block 104 are arranged on the workbench 101;

an accommodating groove 1021 for placing a motor shell 400 is arranged on the top surface of the motor tray 102;

the Z-axis lifting mechanism comprises a blocking plate 103 for blocking the top opening of the motor shell and a Z-axis driving device for driving the blocking plate 103 to move along the Z-axis direction; the Z-axis driving device can be a cylinder.

The volume filling block 104 is disposed on the bottom surface of the plugging plate 103; or the volume filling block is arranged on the motor tray and positioned in the accommodating groove;

when the motor tray moves to a position right below the plugging plate, the Z-axis driving device drives the plugging plate to descend or ascend in the Z-axis direction, so that the plugging plate plugs or opens the top opening of the motor shell; when the closure plate closes off the top opening of the motor housing 400, the volume filling block is located in the interior cavity of the motor housing.

In this embodiment, shutoff board and motor casing's open-top sealing connection, motor casing's bottom and holding recess sealing connection.

In an optional embodiment, the device further comprises a Y-axis sliding mechanism, the Y-axis sliding mechanism comprises a guide rail 1051 and a Y-axis driving device 1052, the guide rail 1051 is fixedly installed on the workbench along the Y-axis direction, and a sliding block in sliding fit with the guide rail is arranged on the bottom surface of the motor tray; the Y-axis driving device drives the motor tray to slide on the guide rail along the Y-axis direction. Specifically, the Y-axis driving device may be an air cylinder.

In an alternative embodiment, the motor tray 102 is further provided with a first testing channel 1022 for communicating with a cooling water channel of the motor housing; the motor tray 102 is further provided with a second testing channel 1023 for communication with the inner cavity of the motor housing. Specifically, the air inlet of the first testing channel 1022 is connected to the air inlet pipe, and the air outlet pipe thereof is connected to the air outlet pipe. The air inlet of the second testing channel 1023 is connected with an air inlet pipe, and the air outlet pipe is connected with an air outlet pipe.

the main gas pipeline assembly comprises a main gas pipeline 110, a one-way valve 120, a first pressure-stabilizing gas storage tank 130, a switch valve 140, a first pressure regulating valve 150 and a filter 160 which are sequentially arranged on the main gas pipeline along the gas conveying direction, and the gas inlet end of the main gas pipeline is connected with a gas source;

two groups of test pipeline components, each test pipeline component comprises a test air pipe 210, and a first electromagnetic valve 220, a second pressure regulating valve 230, a flow sensor 240 and a pressure sensor 250 which are sequentially arranged on the test air pipe along the air conveying direction; the air inlet ends of the test air pipes of more than two groups of test pipeline assemblies are respectively connected with the air outlet end of the main air pipe, the air outlet end of one group of test air pipes is communicated with the air inlet of the first test channel, and the air outlet end of the other group of test air pipes is communicated with the air inlet of the second test channel.

In the preferred embodiment of the present invention, the filter further comprises a branch gas pipe 300, wherein the gas inlet end of the branch gas pipe is connected with the main gas pipe, and the joint of the branch gas pipe and the main gas pipe is located at the rear end of the filter along the gas conveying direction; the air outlet end of the branch air delivery pipe is externally connected with an air using device. Specifically, the gas equipment comprises equipment such as a cylinder, and the design is that partial gas in the main gas conveying pipe is conveyed to the cylinder through the branch gas conveying pipe, so that the occupied space of the pipeline is saved.

In the preferred embodiment of the present invention, the main gas pipe is provided with the second pressure-stabilizing gas tank 170 and the stop valve 180 in the gas conveying direction, and the second pressure-stabilizing gas tank is located at the rear end of the junction of the branch gas pipe and the main gas pipe in the gas conveying direction. Guarantee the stability of atmospheric pressure through second steady voltage gas holder, when needs overhaul second steady voltage gas holder, only need close the stop valve can, have convenient operation's advantage.

In the preferred embodiment of the present invention, the first pressure regulating valve 150 is provided with a pressure gauge 151 and a pressure switch 152. When the pressure gauge indicates that the pressure is too high, the central controller controls the first pressure regulating valve 150 to regulate the air pressure. Meanwhile, when the air pressure exceeds a preset value, the pressure switch can be automatically switched off, and the protection effect is achieved.

In the preferred embodiment of the present invention, the present invention further comprises an air source device 500;

the main gas pipe 110 comprises a first hose 111, a second hose 112, a first hard pipe 113, a third hose 114, a fourth hose 115, a second hard pipe 116 and a multi-way pipe joint 117; the check valve is arranged on the first hose, and the air inlet end of the first hose is connected with the air outlet of the air source device; the air outlet end of the first hose is connected with the air inlet end of the multi-way pipe joint through a first pressure-stabilizing air storage tank, a second hose, a first hard pipe, a third hose, a second pressure-stabilizing air storage tank, a fourth hose and a second hard pipe in sequence; the switch valve, the first pressure regulating valve and the filter are arranged on the first hard pipe, and the stop valve is arranged on the second hard pipe;

the test air tube 210 comprises a third hard tube 211, a fifth soft tube 212 and a fourth hard tube 213; the air inlet end of the third hard tube is connected with one of the air outlet ends of the multi-way pipe joint, and the air outlet end of the third hard tube is connected with the air inlet end of the fourth hard tube through a fifth hose in sequence; the first electromagnetic valve, the second pressure regulating valve, the flow sensor and the pressure sensor are arranged on the third hard pipe.

Design like this, through setting up first hose, second hose, third hose, fourth hose connection first steady voltage gas holder and second steady voltage gas holder, be convenient for set up the great first steady voltage gas holder of volume and second steady voltage gas holder in the outside of organism. In addition, the third hard pipe and the fourth hard pipe are connected through the fifth hose, so that the third hard pipe and the fourth hard pipe can be separately arranged, the arrangement of pipelines is favorably reduced, and the space is reasonably utilized.

In the preferred embodiment of the present invention, the switch valve, the first pressure regulating valve, the second pressure regulating valve, and the flow sensor are all provided with a mounting structure 600 for fixedly connecting with the external plate. The design has the advantages of convenient installation and small occupied space.

In the preferred embodiment of the present invention, the multi-way pipe joint is a three-way pipe with one inlet and two outlets, and the number of the testing pipe assemblies is two.

In the preferred embodiment of the present invention, a second solenoid valve 260 is further disposed on the fourth hard tube. Design like this, when needs overhaul the test tube way, close the second solenoid valve can, have convenient operation's advantage.

In an optional embodiment, the Z-axis driving device includes four guide posts 106 mounted on the worktable, a guide plate 107 slidably sleeved on the four guide posts, a cylinder fixing plate 108 fixedly mounted on the top of the guide posts, and a down-pressing cylinder 109 mounted on the cylinder fixing plate; the top surface of the guide plate is fixedly connected with the lower end of a piston rod of the downward-pressing cylinder, and the plugging plate is fixedly arranged below the guide plate.

In the preferred embodiment of the present invention, the gas outlets of the first testing channel and the second testing channel are respectively provided with an expanding sealing device, the expanding sealing device comprises a sealing housing 710, a movable block 720, a plug 730 and an elastic sealing ring 740, a movable cavity is provided at one end of the sealing housing 710, the other end of the sealing housing 710 is provided with a sealing end 711, the plug 730 is mounted at the sealing end 711, and the elastic sealing ring 740 can be clamped between the sealing end 711 and the plug 730.

The movable block 720 is movably connected in the movable cavity in a penetrating manner, the movable block 720 can move towards the sealing end 711 or away from the sealing end 711, the plug 730 is connected to the movable block 720, and the plug 730 can press the elastic sealing ring 740 after the movable block 720 moves away from the sealing end 711, so that the elastic sealing ring 740 deforms outwards.

The expanding seal device further includes a mounting seat 750, and the seal housing 710 is spaced apart from the sealing seat. In addition, the end of the movable block 720 is connected to the mounting seat 750 through an elastic member 780, and the elastic member 780 can provide an elastic stress, so that the movable block 720 moves close to the sealing end 711 under the elastic stress.

Specifically, the mounting seat 750 is used as a mounting base, when the sealing function is performed, the mounting seat 750 can be integrally moved, so that the sealing end 711 of the sealing shell 710, the elastic sealing ring 740 and the plug 730 are all inserted into the pipe to be tested, after the sealing shell is inserted in place, the elastic part 780 is in a normal state, and the elastic stress provided enables the movable block 720 to abut against the end wall of the movable cavity. Thereafter, a further sealing action is started, the movable block 720 is driven to move away from the sealing end 711 by an external force, and during the movement of the movable block 720 away from the sealing end 711, the elastic component 780 is compressed, and meanwhile, the plug 730 moves towards the sealing end 711, so that the elastic sealing ring 740 deforms outwards. After the sealing test is completed, the power applied to the movable block 720 is removed and the elastic member 780 is restored to restore the movable block 720.

This formula sealing device that rises outward still includes the fixed arm of fixed mounting on the deflector bottom surface, fixed mounting is at driving piece 770 of fixed arm lower extreme, the power take off end and the mount pad 750 of driving piece 770 are connected, driving piece 770 specifically can choose for use to be the cylinder among the prior art, the piston rod of cylinder can be connected with mount pad 750, the flexible mount pad 750 that can drive motion of piston rod of cylinder, and then the drive uses mount pad 750 as the seal housing 710 of installation basis, elastic seal 740 and the integral motion of bayonet joint 730, cartridge perhaps withdraws from the pipeline that awaits measuring, it is more convenient to operate.

On the basis of the structure, use the utility model discloses an during formula sealing device rises outward, can be with sealed end 711, elastic seal 740 and bayonet joint 730 cartridge are in the pipeline of examination of awaiting measuring, then order about movable block 720 towards keeping away from sealed end 711 motion through external force, movable block 720 can drive bayonet joint 730 towards being close to sealed end 711 motion this moment, thereby the elastic seal 740 of extrusion centre gripping between sealed end 711 and bayonet joint 730, elastic seal 740 can take place deformation outwards at the extrusion in-process, make elastic seal 740 hug closely with the pipeline inner wall of examination of awaiting measuring, the sealed face of formation is bigger, sealed effect is better.

Furthermore, a through hole may be further formed in the sealing end 711, the through hole penetrates through the movable chamber, correspondingly, a guiding post 721 is disposed at a portion of the movable block 720 near the sealing end 711, the guiding post 721 is movably inserted into the through hole, and the plug 730 may be connected to the guiding post 721 through a connecting rod 790. Thus, when the movable block 720 moves, the guide posts 721 are in sliding fit with the through holes, so that the movable block 720 can be guided to move stably, and the sealing process is more stable. The plug 730 is connected to the guiding column 721 via the connecting rod 790, so that a certain distance is maintained between the plug 730 and the sealing end 711, which facilitates the movement of the plug 730, and thus the elastic sealing ring 740 generates a relatively large deformation amount and a larger sealing area.

More specifically, the one end of above-mentioned connecting rod 790 can be equipped with spacing post 791, correspond and be equipped with spacing hole 7211 in guide post 721, be equipped with first spacing step on the inner wall of spacing hole 7211, the surface of spacing post 791 is equipped with the spacing step of second, when assembly connecting rod 790 and movable block 720, can cross-under spacing post 791 in spacing hole 7211, and the spacing step of second can cross-under spacing post 791 to spacing hole 7211 back with first spacing step butt, in order to prevent spliced pole and guide post 721 break away from, so alright accomplish the assembly. In addition, the limit hole 7211 may provide a certain movement space, when the movable block 720 is reset, the limit post 791 may move relative to the limit hole 7211, and the plug 730 has a certain buffer space to limit the movement of the plug 730 away from the sealing end 711.

Of course, the fitting of the stopper posts 791 with the stopper holes 7211 can also guide the stable movement of the connector 730.

Specifically, in this embodiment, a first sealing ring 723 may be clamped between the outer surface of the movable block 720 and the inner wall of the movable cavity, and similarly, a second sealing ring 724 may be clamped between the outer surface of the guide rod 721 and the inner wall of the through hole, so that the first sealing ring 723 and the second sealing ring 724 may form a relatively sealed space in the movable cavity. On the basis of the structure, the driving channel 722 is arranged in the movable block 720, the driving channel 722 penetrates into the movable cavity, fluid is introduced into the driving channel 722, and enters the movable cavity, so that the movable block 720 can be driven to move away from the sealing end 711.

Of course, in the present application, an air nozzle may be disposed at an end of the driving channel 722, and air may be introduced into the driving channel 722 through the air nozzle, so that air may be introduced more conveniently.

Furthermore, a gasket 725 can be sleeved outside the connecting rod 790, the gasket 725 can be connected in the through hole in a penetrating mode, namely after the movable block 720 moves towards the position far away from the sealing end 711, the movable block 720 can drive the connecting rod 790 to link, the plug 730 is further pulled to be close to the sealing end 711, and at the moment, the gasket 725 can balance the driving force of the movable block 720, so that the stress is more stable.

Further, a pressing block 760 may be further provided at the sealing end 711, the connection rod 790 is inserted into the pressing block 760, one end of the connection rod 790 extends from the pressing block 760 and into the insertion hole to connect with the guide post 721, and the other end of the connection rod 790 extends from the pressing block 760 and connects with the plug 730. The elastic sealing ring 740 is sleeved on the end of the connecting rod 790 close to the plug 730 and clamped between the pressing block 760 and the plug 730. Thus, when the plug 730 moves towards the sealing end 711, the elastic sealing ring 740 can be pressed by the plug 730 and moves towards the pressing block 760, the contact surface between the elastic sealing ring 740 and the pressing block 760 is relatively large, the amount of deformation generated is relatively uniform, and the formed sealing structure is more stable.

Of course, the connecting rod 790 and the plug 730 in this embodiment can be connected by screws, so as to be convenient for disassembly and assembly and more convenient for replacement.

Preferably, there are four elastic members 780, and four elastic members 780 are circumferentially distributed around the central axis of the movable block 720 at intervals, that is, the movable block 720 can be connected with the mounting seat 750 through four elastic members 780 which are uniformly distributed, so that the stress is more uniform. The elastic member 780 of the present embodiment may be a spring as in the prior art.

The embodiment also provides a testing method of the motor sealing performance testing device, which comprises the following steps:

a preparation step; placing the motor shell in an accommodating groove of a motor tray, driving the motor tray to slide on a guide rail along the Y-axis direction by a Y-axis driving device, and driving the plugging plate to descend in the Z-axis direction by a Z-axis driving device when the motor tray moves to a position right below the plugging plate, so that the plugging plate plugs the top opening of the motor shell, and the volume filling block is positioned in an inner cavity of the motor shell; the air outlet ends of the two groups of test air pipes are respectively in one-to-one corresponding sealing communication with the air inlets of the first test channel and the second test channel, and the air outlets of the first test channel and the second test channel are respectively communicated with the atmosphere; firstly, closing a switch valve, a stop valve and a first electromagnetic valve, inflating a first pressure-stabilizing gas storage tank by a gas source through a one-way valve, opening the switch valve after a preset inflation time, regulating the pressure of the gas through a first pressure regulating valve, and filtering moisture through a filter; one part of the gas with the moisture filtered enters the branch gas pipe, and the other part of the gas enters the second pressure-stabilizing gas storage tank for gas storage;

and (3) testing: the air outlets of all the motor shell are blocked, the stop valves are opened, then the first electromagnetic valves on all the test air pipes are opened, the gas in the second pressure-stabilizing gas storage tank is used for respectively inflating the motor shell, in the test process, the pressure sensor is used for detecting the air pressure of the motor shell, the pressure sensor is used for sending the detected pressure information to the central controller, and the central controller is used for controlling the opening of the second pressure regulating valve according to the pressure information fed back by the pressure sensor, so that the test air pipes keep constant pressure; detecting the flow of the motor shell through the flow sensor, and after a preset test time, when an actual flow change value in the test time reaches a preset flow change value prestored in the central controller, determining that the motor shell is qualified, otherwise, determining that the motor shell is not qualified;

and (3) an exhaust link: after the test is finished, the switch valve, the stop valve and the first electromagnetic valve are closed, and the gas outlets of all the motor shells are opened, so that gas in the test pipeline is emptied.

The flow coefficient is the volume flow, or mass flow, i.e. the flow capacity, of the medium flowing through the valve, which is maintained at a constant pressure in the test conditions per unit time in the conduit. A larger value of the flow coefficient indicates a smaller pressure loss in the fluid flowing through the valve.

While only certain features and embodiments of the application have been illustrated and described, many modifications and changes may occur to those skilled in the art (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the scope and spirit of the invention in the claims.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A motor sealing test device comprises a rack, wherein a horizontal workbench is arranged on the rack, the length direction of the workbench is the X-axis direction, the width direction of the workbench is the Y-axis direction, and the height direction of the workbench is the Z-axis direction; the method is characterized in that:

2. The motor sealing test device according to claim 1, wherein: the Y-axis sliding mechanism comprises a guide rail and a Y-axis driving device, the guide rail is fixedly arranged on the workbench along the Y-axis direction, and a sliding block in sliding fit with the guide rail is arranged on the bottom surface of the motor tray; the Y-axis driving device drives the motor tray to slide on the guide rail along the Y-axis direction; or the motor tray is also provided with a first test channel communicated with a cooling water channel of the motor shell; and a second testing channel communicated with the inner cavity of the motor shell is also arranged on the motor tray.

3. The motor sealing test device according to claim 2, wherein: still include multi-channel pressure flow coefficient testing arrangement, multi-channel pressure flow coefficient testing arrangement includes:

4. The motor sealing test device according to claim 3, wherein: the filter also comprises a branch gas pipe, wherein the gas inlet end of the branch gas pipe is connected with the main gas pipe, and the joint of the branch gas pipe and the main gas pipe is positioned at the rear end of the filter along the gas conveying direction; the air outlet end of the branch air delivery pipe is externally connected with air using equipment;

5. The motor sealing test device according to claim 4, wherein: the device also comprises an air source device;

the test air pipe comprises a third hard pipe, a fifth hose and a fourth hard pipe; and the air inlet end of the third hard tube is connected with one of the air outlet ends of the multi-way tube joint, and the air outlet end of the third hard tube is connected with the air inlet end of the fourth hard tube through a fifth hose in sequence.

6. The motor sealing test device according to claim 2, wherein: the Z-axis driving device comprises four guide posts arranged on the workbench, guide plates sleeved on the four guide posts in a sliding manner, a cylinder fixing plate fixedly arranged at the tops of the guide posts, and a pressing cylinder arranged on the cylinder fixing plate; the top surface of the guide plate is fixedly connected with the lower end of a piston rod of the downward-pressing cylinder, and the plugging plate is fixedly arranged below the guide plate.

7. The motor sealing test device according to claim 6, wherein: the gas outlets of the first testing channel and the second testing channel are respectively provided with an outward expansion type sealing device, each outward expansion type sealing device comprises a sealing shell, a movable block, a plug connector and an elastic sealing ring, a movable cavity is arranged at one end of the sealing shell, a sealing end is arranged at the other end of the sealing shell, and the plug connector is mounted at the sealing end; the elastic sealing ring is clamped between the sealing end and the plug-in connector; the movable block is movably connected in the movable cavity in a penetrating mode and can move towards the position close to or far away from the sealing end; the plug is connected with the movable block and used for extruding the elastic sealing ring after the movable block moves away from the sealing end, so that the elastic sealing ring deforms outwards;

8. The motor sealing test device according to claim 7, wherein: a through hole is formed in the sealing end and penetrates through the movable cavity, a guide column is arranged at the part, close to the sealing end, of the movable block, the guide column is movably connected in the through hole in a penetrating mode, and the plug-in connector is connected into the guide column through a connecting rod; one end of the connecting rod is provided with a limiting column, a limiting hole is formed in the guide column, and a first limiting step is arranged on the inner wall of the limiting hole; the outer surface of the limiting column is provided with a second limiting step, and the limiting column penetrates through the limiting hole; the second limiting step is used for being abutted against the first limiting step to prevent the connecting column from being separated from the guide column.

9. The motor sealing test device according to claim 8, wherein: a first sealing ring is clamped between the outer surface of the movable block and the inner wall of the movable cavity; a second sealing ring is clamped between the outer surface of the guide column and the inner wall of the through hole; a driving channel is arranged in the movable block and penetrates into the movable cavity; the driving channel is used for introducing fluid to drive the movable block to move away from the sealing end; a gasket is sleeved outside the connecting rod and penetrates through the penetrating hole; the sealing end is provided with a pressing block, the connecting rod is connected in the pressing block in a penetrating mode, and one end of the connecting rod extends out of the pressing block and extends into the penetrating hole to be connected with the guide column; the other end of the connecting rod extends out of the pressing block and is connected with the plug-in connector; the elastic sealing ring is sleeved at the end part of the connecting rod close to the plug-in connector and clamped between the pressing block and the plug-in connector.