Airtightness detection equipment for deep-well pump motor

Abstract

The utility model relates to the technical field of detection equipment, in particular to air tightness detection equipment for a deep-well pump motor. Comprising a frame, a tool clamp arranged on the frame and used for fixing a to-be-tested workpiece; the recognition device is used for determining the position of an oil injection hole in the to-be-detected workpiece; the detection device comprises an air nozzle, and the air nozzle is used for being in butt joint with the oil injection hole; the shifting mechanism is used for assisting the air nozzle to be aligned with the oil injection hole; during detection, the recognition device firstly determines the position of an oil injection hole of a to-be-detected workpiece fixed on the tool clamp, and then the detection device controls the air nozzle to be in butt joint with the oil injection hole so as to inject air into the to-be-detected workpiece.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field especially a kind of air tightness detection equipment of deep well pump motor. BACKGROUND

[0002] Deep well pump is a kind of pump that needs to be immersed in underground water well to pump and transport water, due to the particularity of working state, the motor of deep well pump and pump are generally made into a whole, and deep well pump generally uses oil-immersed motor. Therefore, in order to ensure that deep well pump motor can work for a long time, avoid oil in deep well pump motor to leak, also in order to prevent external liquid from entering the inside of deep well pump motor, the air tightness requirement of shell of deep well pump motor is high.

[0003] 1, when detecting deep well pump motor now, the inside of deep well pump motor needs to be inflated to detect whether the shell of deep well pump motor leaks, since the period of detecting single deep well pump motor in this process is generally long, thereby leading to the detection time of present equipment is generally long, so that the efficiency of deep well pump motor in detection stage is generally not high.

[0004] 2, at present, many manufacturers will use artificial to detect the air tightness of shell of deep well pump motor, and the detection efficiency is low. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of air tightness detection equipment of deep well pump motor to improve the problem of low shell air tightness detection efficiency of deep well pump motor now.

[0006] The utility model aims at realizing as follows:

[0007] A kind of air tightness detection equipment of deep well pump motor, comprising:

[0008] frame:

[0009] tooling fixture, it is set on the frame, and the tooling fixture is used to fix the workpiece to be measured;

[0010] recognition device, it is used to determine the position of oil injection hole on the workpiece to be measured;

[0011] detection device, it includes air nozzle, and the air nozzle is used to interface with the oil injection hole;

[0012] displacement mechanism, it is used to assist the air nozzle and oil injection hole alignment;

[0013] When detecting, recognition device first determines the position of oil injection hole of the workpiece to be measured fixed on tooling fixture, then controls air nozzle to interface oil injection hole by detection device, to inject gas into the workpiece to be measured.

[0014] Preferably, the shifting mechanism includes:

[0015] An X-axis moving assembly is connected to a slide, the fixture is arranged on the slide, and the X-axis moving assembly is used to drive the slide to move along the X-axis direction;

[0016] A Y-axis moving component, which is used to drive the detection device to move along the Y-axis;

[0017] Through the cooperation of the X-axis moving assembly and the Y-axis moving assembly, the oil filling hole and the gas nozzle can be moved to the same vertical straight line position by moving the workpiece to be tested and / or the detection device, so that the oil filling hole and the gas nozzle are aligned;

[0018] The detection device includes a second longitudinal moving component, which can drive the gas nozzle to move along the vertical direction; and when the oil filling hole and the gas nozzle are aligned, the gas nozzle can be connected to the oil filling hole.

[0019] Preferably, at least one tooling position is provided on the frame, the slide is slidably installed at the installation position through a guide rail, and the X-axis moving assembly is placed in the installation position to control the position of the workpiece to be measured in the tooling position to facilitate identification and docking operations.

[0020] Preferably, a horizontal displacement component is provided on the frame, and the identification device is connected to the horizontal displacement component. The horizontal displacement component can drive the identification device to move above different tooling positions, so that the identification device can identify the workpiece to be measured in the corresponding tooling position.

[0021] Preferably, the fixture is provided with a material transport plate, and the material transport plate is provided with a plurality of through holes, and the clamping end of the clamping jaw of the fixture can pass through the through holes so that the clamping jaw partially extends above the material transport plate;

[0022] Preferably, the identification device comprises:

[0023] a fixing bracket, which is mounted on the frame;

[0024] A workpiece is photographed, which is mounted on the fixed bracket and is used to identify the position of the oil filling hole of the workpiece to be measured located below;

[0025] The fill aperture is mounted on a fixed bracket and is located below the photographed workpiece, and is used to illuminate the upper end of the workpiece to be measured so that the photographed workpiece can clearly capture the workpiece to be measured corresponding to the portion circled by the fill aperture.

[0026] Preferably, the identification device further includes:

[0027] a bearing, the inner ring of which fixes the lower end of the fixed bracket;

[0028] A rotating bracket is mounted on the outer ring of the bearing, and an outer gear ring is provided on the outer ring;

[0029] A code scanning workpiece, which is mounted on the rotating bracket and is used to scan the product code on the outer wall of the workpiece to be tested;

[0030] a rotation drive motor, which is mounted on the lower end of the fixed bracket and has an output end engaged with the outer gear ring;

[0031] The outer gear ring is driven to rotate by rotating the driving motor, so that the code scanning workpiece rotates around the outer side wall of the workpiece to be measured, thereby achieving code scanning.

[0032] Preferably, a positioning rod is provided on the fixing bracket;

[0033] The fill aperture and the shooting workpiece are both installed on the positioning rod.

[0034] Preferably, the X-axis moving assembly and the Y-axis moving assembly are driven by a screw.

[0035] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0036] 1. This technical solution incorporates an identification device and a detection device. The identification device can quickly and intelligently detect the position of the workpiece to be tested, thereby determining the location of the oil filling hole on the workpiece and facilitating the connection of the air nozzle of the detection device to the oil filling hole. This enables the entire airtightness testing process to be automated and intelligent, improving the efficiency of deep-well pump motor testing.

[0037] 2. When the workpiece to be tested is moved to the bottom of the detection device, if the oil filling hole is not aligned with the air nozzle, the position of the detection device can be moved to position the oil filling hole and the air nozzle.

[0038] 3. A rack is equipped with multiple workstations, each equipped with a detection device. The horizontal displacement assembly can drive the identification device to move between the multiple workstations. Since the detection device takes a certain amount of time to inflate the workpiece to be tested, the identification device can be moved to another workstation to perform identification work during this process, effectively improving the efficiency of the identification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural diagram of the utility model;

[0040] Figure 2 This is a schematic structural diagram of the material transport device of the present invention when clamping a workpiece to be measured;

[0041] Figure 3 This is a side view of the slide and fixture of the material transport device of the present invention when clamping the workpiece to be measured;

[0042] Figure 4 This is a structural diagram of the new material transport device using a fixture, a material transport plate and a workpiece to be measured when they are coordinated.

[0043] Figure 5 It is a partial diagram of the detection device of the present utility model;

[0044] Figure 6 This is a schematic diagram of the structure of the utility model when only the detection device is arranged on the equipment bracket of the rack;

[0045] Figure 7 It is a structural diagram of the identification device of the utility model;

[0046] Figure 8 This is a bottom view of the fixed bracket and the rotating bracket of the identification device of the present invention when they are in cooperation;

[0047] Figure 9 It is a connection diagram of the fixed bracket and the rotating bracket of the identification device of the utility model.

[0048] Reference numerals:

[0049] 1. Frame; 11. Work surface; 12. Tooling position; 13. Loading end; 14. Unloading end; 15. Equipment bracket; 16. Fixed seat;

[0050] 2. Fixture; 21. Clamping jaw; 22. Clamping end; 23. Slide; 24. Material transport plate; 25. Through hole; 26. Support platform; 27. Material placement hole;

[0051] 3. Identification device; 31. Photographing the workpiece; 32. Scanning the workpiece;

[0052] 33. Fixed bracket; 331. Bottom end seat; 332. Rotation drive motor; 333. Drive gear; 334. Bearing; 335. Positioning rod; 336. Filling aperture; 337. Bearing slot; 338. Avoidance hole;

[0053] 34. Rotating bracket; 341. Connecting portion; 342. Connecting hole; 343. Outer gear ring; 344. Mounting seat; 345. Lens direction schematic line;

[0054] 35. Horizontal displacement assembly; 351. Driving source 1; 352. Drive belt; 353. Connector; 354. Drag chain trough 1; 355. Drag chain 1; 356. Guide rail 1; 36. Longitudinal movement assembly 1;

[0055] 4. Detection device; 41. Air nozzle; 42. Longitudinal moving component 2; 43. Air pipe interface;

[0056] 5. Workpiece to be measured; 51. Oil filling hole;

[0057] 6. Control panel;

[0058] 7. X-axis moving assembly; 71. X-axis direction screw; 72. X-axis moving drive motor; 73. Connecting seat; 74. Driving pulley 1; 75. Driven pulley 1; 76. Returner 1;

[0059] 8. Y-axis moving assembly; 81. Y-axis direction screw; 82. Y-axis moving drive motor; 83. Bearing seat; 84. Drag chain slot 2; 85. Drag chain 2; 86. Guide rail 2; 87. Drive pulley 2; 88. Drive pulley 2. DETAILED DESCRIPTION

[0060] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0061] like Figures 1-4 The air tightness detection device for a deep well pump motor shown in the figure comprises:

[0062] Rack 1:

[0063] A fixture 2 is provided on the frame 1 and is used to fix a workpiece 5 to be measured;

[0064] an identification device 3 for determining the position of the oil filling hole 51 on the workpiece 5 to be measured;

[0065] The detection device 4 includes an air nozzle 41, which is used to connect with the oil injection hole 51 and detect the air tightness of the workpiece 5 by injecting air into the workpiece 5 to be tested;

[0066] The displacement mechanism is used to assist in aligning the air nozzle 41 and the oil filling hole 51 .

[0067] Due to the unique operating environment of deep-well pumps, the pump and motor are typically integrated. Oil-immersed motors are commonly used. Because they are completely immersed in oil, oil-immersed motors are compact, offer high heat dissipation efficiency, strong operational stability, excellent reliability, and a long service life. If the deep-well pump's seal is poor and leaks exist in the pump body, the oil inside the pump will gradually leak into the external environment, resulting in insufficient internal oil and affecting the proper operation of the motor. Leaks in the pump body can also introduce external liquid into the pump, potentially damaging the various electronic components within the deep-well pump. Therefore, the sealing performance of the deep-well pump body is a crucial indicator of its quality.

[0068] When this equipment is performing inspection, the recognition device 3 obtains the position image of the oil filling hole 51 by taking pictures, and analyzes and determines the position of the oil filling hole 51 of the workpiece to be tested 5 fixed on the fixture 2 through the control device, and then controls the air nozzle 41 to dock with the oil filling hole 51 through the detection device 4, so that the air nozzle 41 can inject air into the workpiece to be tested 5.

[0069] In this embodiment, specifically Figure 5 As shown, a trachea interface 43 is provided on the side of the air nozzle 41, and the trachea interface 43 is used to connect the inflation tube. The inflation tube is also connected to an air pressure detector, which is used to measure the air pressure in the inflation tube.

[0070] During testing, after the air nozzle 41 is connected to the oil filling hole 51, air will be inflated into the workpiece 5 to be tested, so that the air pressure inside the pump body reaches the test air pressure. Since the air filling pipe is now connected to the interior of the workpiece 5 to be tested, the air pressure inside the air filling pipe is the same as the air pressure inside the workpiece 5 to be tested. When the air pressure detector determines that the air pressure inside the air filling pipe has reached the test pressure, the air supply to the air filling pipe is turned off and maintained in this state. If it takes too long to inflate the interior of the pump body to reach the test pressure, or if the air pressure measured by the air pressure detector drops too much after the air supply is stopped, it means that the pump body of the workpiece 5 to be tested is leaking, that is, the workpiece 5 to be tested is unqualified.

[0071] It should be noted here that since water pumps have different specifications and sizes, the time for inflating the pump body and the time for stopping inflation should be adjusted according to the actual parameters of the water pump body. Therefore, there is no restriction on the time for inflating the pump body and the time for stopping inflation.

[0072] like Figure 1 and Figure 2 As shown, the shifting mechanism includes:

[0073] An X-axis moving assembly 7 is connected to a slide 23, on which the fixture 2 is disposed. The X-axis moving assembly 7 is used to drive the slide 23 to move along the X-axis direction;

[0074] The Y-axis moving assembly 8 is used to drive the detection device 4 to move along the Y-axis direction.

[0075] Through the cooperation of the X-axis moving assembly 7 and the Y-axis moving assembly 8, the oil filling hole 51 and the air nozzle 41 can be moved to the same vertical straight line position by moving the workpiece to be tested 5 and / or the detection device 4, so as to facilitate the alignment of the oil filling hole 51 and the air nozzle 41.

[0076] Specific as Figure 5As shown, the detection device 4 further includes a second longitudinal moving assembly 42, which can move the air nozzle 41 in the vertical direction. When the oil filling hole 51 and the air nozzle 41 are aligned, the second longitudinal moving assembly 42 drives the air nozzle 41 downward so that the air nozzle 41 can be connected to the oil filling hole 51.

[0077] like Figures 1-6 As shown, at least one tooling position 12 is opened on the frame 1, and the slide 23 is slidably installed at the installation position through a guide rail. The X-axis moving component 7 is placed in the installation position to control the position of the workpiece 5 to be measured in the tooling position 12 to facilitate the completion of identification and docking operations.

[0078] In this embodiment, the mounting position is located below the work surface 11, and the tooling position 12 is a through hole formed in the work surface 11. The X-axis moving assembly 7 can drive the workpiece 5 to start moving at the loading end 13 of the tooling position 12, and after the workpiece 5 passes under the identification device 3 and the detection device 4 in sequence, it drives the workpiece 5 to move to the unloading end 14 of the tooling position 12.

[0079] like Figure 1 、 Figure 6 and Figure 7 As shown, a horizontal displacement component 35 is provided on the frame 1, and the identification device 3 is connected to the horizontal displacement component 35. The horizontal displacement component 35 can drive the identification device 3 to move above different workstations 12, so that the identification device 3 can identify the workpiece 5 to be measured in the corresponding workstation 12.

[0080] Since the inflation test of the workpiece 5 takes a long time, and the identification device 3 only needs to take a photo to determine the position of the oil filling hole 51 on the workpiece 5, in order to improve the working efficiency of the equipment, when the workpiece 5 in one workstation 12 is undergoing inflation testing, the identification device 3 can be moved to another workstation 12 via the horizontal displacement assembly 35, and the workpiece 5 in that workstation 12 can be photographed and identified, thereby improving the utilization rate of the identification device 3.

[0081] like Figure 2-Figure 4 As shown, a material transport plate 24 is provided on the fixture 2, and a plurality of through holes 25 are opened on the material transport plate 24. The clamping end 22 of the clamping claw 21 of the fixture 2 can pass through the through holes 25, and the clamping end 22 can pass through the through holes 25 and extend to the top of the material transport plate 24.

[0082] After the workpiece 5 to be measured is placed on the transport plate 24 , the clamping jaws 21 can move along the through hole 25 and make the clamping ends 22 fit against the circumference of the workpiece 5 to be measured to fix the workpiece 5 to be measured.

[0083] A support platform 26 is provided below the slide 23, and the fixture 2 is provided on the support platform 26. The slide 23 also has a material placement hole 27, which is located at the upper end of the support platform 26. The workpiece 5 to be measured can pass through the material placement hole 27 and be placed on the material transport plate 24.

[0084] By arranging the X-axis moving assembly 7 below the work surface 11 and hiding the fixture 2 under the work surface 11 , the space inside the frame 1 can be effectively utilized.

[0085] Furthermore, there is no need to set an excessively high equipment bracket 15 on the rack 1 , so that sufficient space can be left between the identification device 3 and the detection device 4 .

[0086] like Figure 1 and Figure 7-Figure 9 As shown, the identification device 3 includes:

[0087] A fixed bracket 33, which is mounted on the frame 1;

[0088] A photographing workpiece 31 is mounted on a fixed bracket 33 and is used to identify the position of the oil filling hole 51 of the workpiece 5 to be measured located below;

[0089] The fill light circle 336 is installed on the fixed bracket 33 and is located below the shooting workpiece 31. It is used to illuminate the upper end of the workpiece 5 to be measured, so that the workpiece 31 can be clearly photographed. The part of the workpiece 5 to be measured corresponding to the circled part of the fill light circle 336 can be accurately located.

[0090] Furthermore, the identification device 3 further includes:

[0091] Bearing 334, the lower end of the fixed bracket 33 is connected to the bottom end seat 331, the bottom end seat 331 is formed with a bearing groove 337, and the inner ring of the bearing 334 is fixed in the bearing groove 337 of the fixed bracket 33;

[0092] The rotating bracket 34 has a connecting portion 341 formed with a connecting hole 342. The inner wall of the connecting hole 342 is sleeved on the outer ring of the connecting bearing 334 of the connecting portion 341. The outer ring of the connecting portion 341 is provided with an outer gear ring 343.

[0093] Scan the workpiece 32, the rotating bracket 34 is provided with a mounting seat 344, the scan workpiece 32 is set on the mounting seat 344, and the lens direction schematic line 345 of the scan workpiece 32 is as shown in FIG. Figure 8 As shown, the lens of the code scanning workpiece 32 is facing the workpiece to be measured 5, and the code scanning workpiece 32 is used to scan the product code on the outer wall of the workpiece to be measured 5;

[0094] A rotating driving motor 332 is installed on the bottom end seat 331, and the output end of the rotating driving motor 332 is connected with a driving gear 333, and the driving gear 333 engages with the outer gear 343.

[0095] The rotating driving motor 332 drives the outer gear 343 to rotate through the rotating driving motor 332, so that the support 34 can rotate, and the code scanning workpiece 32 rotates around the outer side wall of the workpiece 5 to be detected, and the code scanning is realized.

[0096] As shown in Figure 1 and Figure 9 , the fixed support 33 is provided with a positioning rod 335;

[0097] The light compensation ring 336 and the shooting workpiece 31 are both installed on the positioning rod 335.

[0098] The recognition device 3 further comprises a longitudinal movement assembly one 36, and the positioning rod 335 is connected with the longitudinal movement assembly one 36, and the positioning rod 335 can be driven to move along the vertical direction through the longitudinal movement assembly one 36.

[0099] The shooting workpiece 31 needs to be focused when shooting, and the light generated by the light compensation ring 336 also affects the focusing of the shooting workpiece 31, so it is necessary to fix the distance between the light compensation ring 336 and the shooting workpiece 31, so as to ensure that the shooting workpiece 31 can get a photo with appropriate brightness and high quality, which is convenient for the control device to judge the position of the oil injection hole 51.

[0100] Since the light compensation ring 336 and the shooting workpiece 31 are both arranged on the positioning rod 335, the distance between the light compensation ring 336 and the shooting workpiece 31 can be kept fixed. When the positioning rod 335 is driven to move up and down by the longitudinal movement assembly one 36, the light compensation ring 336 and the shooting workpiece 31 can be moved synchronously, avoiding the trouble of adjusting the positions of the light compensation ring 336 and the shooting workpiece 31 respectively.

[0101] The bottom end seat 331 is provided with an avoiding hole 338, and the avoiding hole 338 is used to ensure that the light generated by the light compensation ring 336 can completely irradiate on the upper surface of the workpiece 5 to be detected, so as to ensure the quality of the picture taken by the shooting workpiece 31.

[0102] As shown in Figure 1 , the rack 1 is provided with a control panel 6, and the control panel 6 can control the working state of the recognition device 3 and the detection device 4 on each tool position 12, so as to better let the recognition device 3 work with the detection device 4.

[0103]

Example two

[0104] The embodiment and the embodiment one are basically the same, and the difference is that:

[0105] Specifically as Figure 2 As shown, the X-axis moving component 7 includes:

[0106] An X-axis moving drive motor 72 is disposed below the work surface 11 through a connecting seat 73 , and an output end of the X-axis moving drive motor 72 is connected to a driving pulley 1 74 ;

[0107] The X-axis direction lead screw 71 is sleeved with a returner 76, and the slide 23 is connected to the returner 76.

[0108] One end of the X-axis direction lead screw 71 is provided with a driven pulley 75, and the driving pulley 74 and the driven pulley 75 are connected by a synchronous belt. When the X-axis movement drive motor 72 is working, it will drive the X-axis direction lead screw 71 to rotate, and can drive the slide 23 to move along the X-axis direction through the return device 76.

[0109] Specific as Figure 5 and Figure 6 As shown, the Y-axis moving component 8 includes:

[0110] The Y-axis direction lead screw 81 has its two ends fixed to the upper end of the equipment bracket 15 through the fixing seat 16;

[0111] The Y-axis moving drive motor 82 has its output end connected to a second drive pulley 87;

[0112] The bearing seat 83 is provided on the Y-axis direction lead screw 81, one end of which is connected to the driven pulley 88, and the bearing seat 83 is connected to the detection device 4;

[0113] The second guide rail 86 is provided on the equipment bracket 15 , and the detection device 4 is slidably provided on the second guide rail 86 .

[0114] The second driving pulley 87 and the second driven pulley 88 are connected by a synchronous belt. When the Y-axis movement drive motor 82 is in operation, the second driven pulley 88 drives the returner in the bearing seat 83 to rotate. Since both ends of the Y-axis direction screw 81 are fixed, the bearing seat 83 moves along the Y-axis direction screw 81, thereby driving the detection device 4 to move along the Y-axis direction screw 81.

[0115] One end of the detection device 4 is also connected to a drag chain 2 85, which is set on the drag chain slot 2 84, so as to ensure that when the detection device 4 moves, it can maintain connection with the control device, so that the control device can control the air nozzle 41 to align with the oil filling hole 51.

[0116] The position of the workpiece 5 to be measured on the X-axis is controlled by the X-axis moving component 7, and the position of the air nozzle 41 on the Y-axis is driven by the Y-axis moving component 8, so that the oil filling hole 51 on the workpiece 5 to be measured and the projection of the air nozzle 41 on the horizontal plane can be aligned.

[0117] Example Three

[0118] As shown in Figure 7 the embodiment and example one are basically the same, the difference is that:

[0119] The horizontal displacement assembly 35 comprises:

[0120] a driving source 351 for driving the identification device 3 to move;

[0121] a transmission belt 352 connected with the output end of the driving source 351;

[0122] a connecting member 353 arranged on the identification device 3, and the connecting member 353 is clamped and fixed on the transmission belt 352;

[0123] a guide rail 356 arranged on the equipment support 15.

[0124] When the driving source 351 drives the transmission belt 352 to rotate, the identification device 3 can be driven to move along the guide rail 356 through the connecting member 353.

[0125] The identification device 3 is also connected with a drag chain 355, and the drag chain 355 is arranged in a drag chain groove 354, so that the connection between the identification device 3 and the control device can be ensured through the drag chain 355 when the identification device 3 moves.

[0126] It should be understood that the structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not have technical substantive significance for defining the implementation conditions of the utility model, so any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for clear description, and not for limiting the scope of the utility model, and the change or adjustment of the relative relationship is also regarded as the implementation range of the utility model without changing the technical content.

[0127] It should also be noted that when an element is referred to as "fixed to" or "arranged on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element through a middle element.

[0128] In addition, the descriptions in the present application involving "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist, nor within the protection scope required by the present application.

Claims

1. An air tightness detection device for a deep well pump motor, characterized in that: include: Rack(1): A fixture (2) is provided on the frame (1), and the fixture (2) is used to fix the workpiece (5) to be measured; an identification device (3) for determining the position of an oil filling hole (51) on the workpiece (5) to be tested; A detection device (4), comprising an air nozzle (41), wherein the air nozzle (41) is used to connect with the oil filling hole (51); A shifting mechanism for assisting the alignment of the gas nozzle (41) and the oil filling hole (51); During the test, the recognition device (3) first determines the position of the oil injection hole (51) of the workpiece (5) to be tested fixed on the fixture (2), and then controls the air nozzle (41) to connect with the oil injection hole (51) through the detection device (4) to inject air into the workpiece (5) to be tested.

2. The air tightness detection device for a deep well pump motor according to claim 1, characterized in that: The shifting mechanism comprises: An X-axis moving assembly (7) is connected to a slide (23), the fixture (2) is arranged on the slide (23), and the X-axis moving assembly (7) is used to drive the slide (23) to move along the X-axis direction; A Y-axis moving assembly (8) for driving the detection device (4) to move along the Y-axis; By cooperating with the X-axis moving assembly (7) and the Y-axis moving assembly (8), the oil filling hole (51) and the gas nozzle (41) can be moved to the same vertical straight line position by moving the workpiece (5) to be tested and / or the detection device (4), so that the oil filling hole (51) and the gas nozzle (41) are aligned; The detection device (4) includes a second longitudinal moving component (42), which can drive the gas nozzle (41) to move along the vertical direction; and when the oil filling hole (51) and the gas nozzle (41) are aligned, the gas nozzle (41) can be connected to the oil filling hole (51).

3. The air tightness detection device for a deep well pump motor according to claim 2, characterized in that: At least one tooling position (12) is provided on the frame (1), the slide (23) is slidably mounted on the mounting position via a guide rail, and the X-axis moving assembly (7) is placed in the mounting position to control the position of the workpiece (5) to be measured in the tooling position (12) so as to complete identification and docking operations.

4. The air tightness detection device for a deep well pump motor according to claim 3, characterized in that: A horizontal displacement assembly (35) is provided on the frame (1), and the identification device (3) is connected to the horizontal displacement assembly (35). The horizontal displacement assembly (35) can drive the identification device (3) to move above different tooling positions (12), so that the identification device (3) can identify the workpiece (5) to be measured in the corresponding tooling position (12).

5. The air tightness detection device for a deep well pump motor according to claim 2, characterized in that: The tooling fixture (2) is provided with a material transport plate (24), and a plurality of through holes (25) are opened on the material transport plate (24). The clamping end (22) of the clamping jaw (21) of the tooling fixture (2) can pass through the through holes (25), so that the clamping jaw (21) partially extends above the material transport plate (24).

6. The air tightness detection device for a deep well pump motor according to any one of claims 1 to 4, characterized in that: The identification device (3) comprises: A fixed bracket (33) mounted on the frame (1); A photographing workpiece (31) is mounted on the fixing bracket (33) and is used to identify the position of the oil filling hole (51) of the workpiece (5) to be measured located below; A fill light ring (336) is mounted on a fixed bracket (33) and is located below the photographing workpiece (31), and is used to illuminate the upper end of the workpiece (5) to be measured, so that the photographing workpiece (31) can clearly photograph the workpiece (5) to be measured corresponding to the portion circled by the fill light ring (336).

7. The air tightness detection device for a deep well pump motor according to claim 6, characterized in that: The identification device (3) further comprises: A bearing (334), the inner ring of which fixes the lower end of the fixed bracket (33); A rotating bracket (34) is mounted on the outer ring of the bearing (334), and an outer gear ring (343) is provided on the outer ring; A code scanning workpiece (32), which is mounted on the rotating bracket (34) and is used to scan the product code on the outer wall of the workpiece (5) to be tested; A rotation drive motor (332) is mounted on the lower end of the fixed bracket (33), and the output end of the motor is engaged with the outer gear ring (343); The outer gear ring (343) is driven to rotate by rotating the driving motor (332), so that the code scanning workpiece (32) rotates around the outer side wall of the workpiece to be measured (5), thereby achieving code scanning.

8. The air tightness detection device for a deep well pump motor according to claim 7, characterized in that: A positioning rod (335) is provided on the fixing bracket (33); The fill aperture (336) and the photographing workpiece (31) are both mounted on the positioning rod (335).

9. The air tightness detection device for a deep well pump motor according to any one of claims 2 to 5, characterized in that: The X-axis moving assembly (7) and the Y-axis moving assembly (8) are driven by a lead screw.

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