Water-cooled motor shell sealing detection equipment

Abstract

The invention provides water-cooled motor shell sealing detection equipment, which belongs to the technical field of sealing testing and comprises a detection table, a base fixedly mounted at the lower part of the detection table, a main controller fixedly mounted at the front part of the base, and a first cylinder and a second cylinder fixedly mounted at the upper part of the detection table, a water permeation detection box, a water seepage detection box and a two-way air dryer assembly are sequentially arranged in the detection table. According to the invention, the water-cooled motor shell is placed between the lifting plate and the pressing plate, the lifting plate and the pressing plate fix and seal the water-cooled motor shell, the water-cooled motor shell enters the water permeability detection box, and the water pump injects detection water into the water permeability detection box through the water valve. A tester judges whether water permeates into the water-cooled motor shell through the change of the air pressure of the barometer to cause the air pressure drop, so that the sealing degree in the motor shell is judged, and the sealing performance of the double-layer water-cooled motor shell is detected from the inner side and the outer side.

Description

Technical Field

[0001] The invention belongs to the technical field of sealing test, and in particular relates to a sealing detection device for a water-cooled motor housing. Background Art

[0002] Water-cooled motors use water cooling to dissipate heat, so there are very strict requirements for the sealing of the motor housing. Before assembling the motor, it is necessary to first determine whether the sealing of the motor housing meets the requirements to prevent water from entering the motor. Since the housing is generally made of casting, there may be sand holes in the housing, so it is necessary to use water-cooled motor housing sealing detection equipment to test the sealing of the water-cooled motor housing; A sealing detection device for a water-cooled motor housing with application number 202222481752.7 comprises a frame, a water receiving box is fixedly connected to the bottom inner wall of the frame, a motor housing is arranged inside the frame, a sealing mechanism is arranged on the inner top and one side of the frame, the sealing mechanism comprises a first fixed box, a second fixed box, and a supporting fixed block, a hydraulic push rod is fixedly installed on the bottom inner wall of the first fixed box; The existing water-cooled motor housing seal detection equipment on the market also generally includes a frame, on which is mounted a mold symmetrically arranged up and down for fixing the motor housing, the mold is used to clamp the sealed water-cooled motor housing, the mold is mounted with a valve for water injection and pressurization, and is equipped with a water pump for conveying water and an air pump for conveying gas; The above-mentioned existing water-cooled motor housing sealing detection equipment detects the sealing degree of the motor housing by fixing and sealing the motor housing, and then injecting water into the motor housing to increase the pressure. However, some existing water-cooled motor housings have a double-layer shell structure, and the two layers of the shell are used to accommodate the flowing water-cooling medium. It is not convenient to use the existing water-cooled motor housing sealing detection equipment to detect the sealing degree of the double-layer motor housing; and after the detection, the water-cooled motor housing is dried by being left to stand or by other drying equipment, and the operation complexity and equipment cost are relatively high. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a water-cooled motor housing sealing detection device, which can detect the sealing degree of the double-layer motor housing by immersing water into the inside and outside of the double-layer motor housing respectively. The device is suitable for single-layer motor housings and double-layer motor housings, improves applicability, and can air-dry the motor casing, reducing the complexity of operation and the cost of the equipment.

[0004] The present invention is achieved through the following technical solutions: A water-cooled motor housing sealing detection device comprises a detection platform, a base is fixedly installed at the lower part of the detection platform, a main controller is fixedly installed at the front part of the base, a first cylinder and a second cylinder are fixedly installed at the upper part of the detection platform, a water permeation detection box, a water seepage detection box and a two-way air dryer assembly are sequentially arranged inside the detection platform, a box cover is sealed and installed at the upper part of the water permeation detection box through a metal buckle, a convex block is integrally arranged at one side of the inner part of the water permeation detection box, a screw rod is longitudinally arranged at one side of the inner part of the water permeation detection box, a rotating shaft is connected to a coupling at the lower end of the screw rod, a bottom frame is fixedly installed at the lower part of the water permeation detection box, and a rotating shaft is connected to a rotating shaft at the bottom end of the screw rod. A motor is fixedly installed at the bottom, a limit rod is fixedly installed between the protrusion and the bottom of the water permeability detection box in parallel with the screw rod, a lifting plate is installed between the limit rod and the screw rod, a through hole opened on one side of the lifting plate is slidably connected to the limit rod, and the lifting plate is fixedly connected to the screw rod through a ball nut, a bracket is fixedly installed on the upper part of the lifting plate, a top plate is fixedly installed on the upper part of the bracket, a top pressure cylinder is fixedly installed on the upper part of the top plate, a pressure plate is slidably arranged on the bracket, the pressure plate and the output rod of the top pressure cylinder are fixedly installed, and sealing plates are fixedly installed on the lower surface of the pressure plate and the upper surface of the top plate. The water seepage detection box includes upper and lower surfaces facing each other. An upper box body and a lower box body are provided, a groove is provided inside the lower box body, through holes are provided side by side on the upper part of the upper box body, one of the through hole pipelines is connected to a water valve, the other through hole pipeline is connected to a pressure gauge, the water valve pipeline is connected to a water pump, and the two-way air dryer assembly includes a mounting plate, a rotating column is mounted on a bearing at one end of the mounting plate, a main air outlet is provided inside the rotating column, a side air outlet is provided inside the lower end of the rotating column, a side connecting pipe is integrated on one side of the rotating column, a side pipe is fixedly installed on one end of the side connecting pipe, an outgoing air duct is fixedly installed on the end of the side pipe away from the side connecting pipe, and the rotating column A driven gear is fixedly installed on the outside, a driving gear is meshed with one side of the driven gear, a motor is fixedly installed on the lower part of the mounting plate, the output shaft of the motor is fixedly connected to the driving gear, an inner air outlet duct is fixedly installed on the lower end of the air outlet duct integrated at the lower end of the rotating column, an air inlet steel pipe is arranged on the upper part of the mounting plate, a support rod is fixedly installed between the air inlet steel pipe and the mounting plate, one end of the air inlet steel pipe is connected to the air inlet integrated at the upper end of the rotating column through a rotating air duct joint, an air duct is fixedly installed on the other end of the air inlet steel pipe, a fan is arranged on the other end of the air duct, and the air outlet of the fan is fixedly connected to the air duct.

[0005] Preferably, the main air outlet and the side air outlet are connected to each other.

[0006] Preferably, the side connecting pipe and the side air outlet are connected to each other.

[0007] Preferably, the base frame and the lower box are fixedly installed side by side inside the testing platform, and the mounting plate is fixedly installed at the lower part of the output rod of the second cylinder.

[0008] Preferably, the connection ports integrally arranged side by side on the upper part of the box cover are also connected to a water valve and a pressure gauge through pipelines, the water valve is connected to a water pump, and the pressure gauge is connected to an air pump.

[0009] Preferably, the water outlet of each group of water pumps is connected to a water valve pipeline, the air outlet of each group of air pumps is connected to a pressure gauge pipeline, and an electromagnetic air valve is installed on the pipeline connecting the air pump and the pressure gauge.

[0010] Preferably, the upper box is fixedly connected to the output rod of the first cylinder.

[0011] Preferably, the rotating shaft is fixed to the water permeability detection box via a sealed bearing, and the lower end of the rotating shaft extends to the outside of the water permeability detection box, and the output shaft of the motor is connected to the lower end coupling of the rotating shaft.

[0012] Preferably, a drain hole is provided inside the lower box body, and a drain solenoid valve is fixedly installed at the lower part of the drain hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when inspecting the outer shell of a double-layer water-cooled motor shell, the water-cooled motor shell is placed between a lifting plate and a pressing plate, the lifting plate and the pressing plate fix and seal the water-cooled motor shell, the motor drives the screw rod to rotate, thereby the water-cooled motor shell fixed between the lifting plate and the pressing plate enters the water permeability detection box, the water for detection is injected into the water permeability detection box through a water pump through a water valve, the water valve is closed after the water is injected, the water permeability detection box is pressurized by an air pump, an electromagnetic air valve and a pressure gauge, and the electromagnetic air valve is closed, after the detection time is reached, the tester determines whether there is water infiltrating into the interior of the water-cooled motor shell and causing the air pressure to drop by the change of the air pressure on the pressure gauge, thereby determining the sealing degree of the interior of the motor shell, and detecting the sealing of the double-layer water-cooled motor shell from both the inside and the outside, which is convenient for detecting the sealing degree of the double-layer motor shell, and is suitable for single-layer motor shells and double-layer motor shells, thereby improving the applicability.

[0014] 2. In the present invention, the test personnel put the water-cooled motor housing on the test bench, start the fan and the motor, the motor drives the rotating column to rotate through the meshing of the driving gear and the driven gear, the wind blown by the fan is blown out through the inner air outlet duct to dry the inside of the water-cooled motor housing, and the outgoing air duct rotates around the outside of the water-cooled motor housing to dry the outside of the water-cooled motor housing, which is beneficial to drying the water-cooled motor housing and reduces the complexity of the operation and the cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure inside the water penetration detection box of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the water seepage detection box of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the two-way air dryer assembly of the present invention.

[0019] Figure 5 It is a schematic cross-sectional structural diagram of the rotating column of the present invention.

[0020] In the figure: 1. Test bench; 2. Base; 3. Main controller; 4. First cylinder; 5. Second cylinder; 6. Water seepage test box; 61. Box cover; 611. Base frame; 62. Bump; 63. Screw rod; 64. Motor; 65. Lifting plate; 66. Limit rod; 67. Rotating shaft; 651. Sealing plate; 652. Bracket; 653. Top plate; 654. Press plate; 655. Top pressure electric cylinder; 7. Water seepage test box; 71. Lower box; 711. Groove; 712. Drain hole; 72. Upper box body; 73, water-cooled motor housing; 721, water valve; 722, barometer; 723, air pump; 724, water pump; 8, two-way air dryer assembly; 81, mounting plate; 82, rotating column; 821, main air outlet; 822, side air outlet; 823, side connecting pipe; 83, side pipe; 84, outgoing air duct; 85, driven gear; 86, driving gear; 87, motor; 88, internal air outlet duct; 89, air inlet steel pipe; 891, support rod; 892, air duct; 893, fan. DETAILED DESCRIPTION

[0021] The present invention is described in detail below in conjunction with the accompanying drawings. As shown in Figure 1, a water-cooled motor housing sealing detection equipment includes a detection platform 1, a base 2 is fixedly installed at the lower part of the detection platform 1, a main controller 3 is fixedly installed at the front part of the base 2, a first cylinder 4 and a second cylinder 5 are fixedly installed at the upper part of the detection platform 1, a water permeability detection box 6, a water seepage detection box 7 and a two-way air dryer assembly 8 are sequentially arranged inside the detection platform 1, a box cover 61 is sealed and installed on the upper part of the water permeability detection box 6 through a metal buckle, a bump 62 is integrally arranged on one side of the interior of the water permeability detection box 6, a screw rod 63 is longitudinally arranged on one side of the interior of the water permeability detection box 6, and a rotating shaft 67 is connected to the lower end coupling of the screw rod 63, the rotating shaft 67 is fixed to the water permeability detection box 6 through a sealed bearing, and the lower end of the rotating shaft 67 extends to the outside of the water permeability detection box 6, and a base frame 611 is fixedly installed at the lower part of the water permeability detection box 6.

[0022] In this embodiment, combined with the Figure 2As shown, a motor 64 is fixedly installed inside the bottom frame 611, and the motor 64 adopts a stepping motor. The output shaft of the motor 64 is connected with the lower end coupling of the rotating shaft 67. A limit rod 66 is fixedly installed between the protrusion 62 and the bottom of the water permeability detection box 6 and parallel to the screw rod 63. A lifting plate 65 is installed between the limit rod 66 and the screw rod 63. A through hole opened on one side of the lifting plate 65 is slidably connected with the limit rod 66, and the lifting plate 65 is fixedly connected with the screw rod 63 through a ball nut. A bracket 652 is fixedly installed on the upper part of the bracket 652, a top plate 653 is fixedly installed on the upper part of the bracket 652, a top pressure electric cylinder 655 is fixedly installed on the upper part of the top plate 653, a pressing plate 654 is slidably arranged on the bracket 652, the pressing plate 654 and the output rod of the top pressure electric cylinder 655 are fixedly installed, and a sealing plate 651 is fixedly installed on the lower surface of the pressing plate 654 and the upper surface of the top plate 653. When inspecting the outer shell of the double-layer water-cooled motor shell 73, the test personnel put the water-cooled motor shell 73 The lifting plate 65 is placed between the lifting plate 65 and the pressing plate 654, and the top pressure electric cylinder 655 presses the pressing plate 654 downward, so that the lifting plate 65 and the pressing plate 654 fix and seal the water-cooled motor housing 73, and the motor 64 drives the screw rod 63 to rotate, and the lifting plate 65 moves downward under the limiting action of the limiting rod 66, so that the water-cooled motor housing 73 fixed between the lifting plate 65 and the pressing plate 654 enters the water penetration detection box 6, and the detection water is injected into the water penetration detection box 6 through the water valve 721 by the water pump 724. After water is injected, the water valve 721 is closed, and pressure is applied to the water penetration detection box 6 through the air pump 723, the electromagnetic air valve and the pressure gauge 722, and the electromagnetic air valve is closed. After the detection time is reached, the tester judges whether water has penetrated into the interior of the water-cooled motor housing 73 and caused the air pressure to drop through the change of the air pressure of the pressure gauge 722, thereby judging the sealing degree of the inside of the motor housing, and testing the sealing of the double-layer water-cooled motor housing 73 from both the inside and the outside, thereby improving the applicability of the double-layer motor housing.

[0023] In this embodiment, combined with the Figure 3As shown, the water seepage detection box 7 includes an upper box body 72 and a lower box body 71 which are arranged opposite to each other from top to bottom. A groove 711 is provided inside the lower box body 71, and a drain hole 712 is provided inside the lower box body 71. A drainage solenoid valve is fixedly installed at the lower part of the drain hole 712. Through holes are provided in parallel at the upper part of the upper box body 72. A water valve 721 is connected to one of the through hole pipelines, and a pressure gauge 722 is connected to the other through hole pipeline. A water pump 724 is connected to the water valve 721 pipeline. When the inner layer sealing degree of the double-layer water-cooled motor housing 73 is detected, the water-cooled motor housing 73 is placed between the lower box body 71 and the upper box body 72, and the water and air intake of the upper box body 72 are made The hole is arranged in the middle of the inner layer of the water-cooled motor housing 73. The first cylinder 4 drives the upper box body 72 to move downward, so that the upper box body 72 and the lower box body 71 fix and seal the water-cooled motor housing 73. The water pump 724 injects the test water into the water-cooled motor housing 73 through the water valve 721. After the water is injected, the water valve 721 is closed, and the air pump 723, the electromagnetic air valve and the pressure gauge 722 are used to apply pressure to the inside of the water-cooled motor housing 73, and the electromagnetic air valve is closed. After the detection time is reached, the tester judges whether there is water seeping out of the outside of the water-cooled motor housing 73 and causing the air pressure to drop through the change of the air pressure of the pressure gauge 722, thereby judging the sealing degree of the inside of the water-cooled motor housing 73.

[0024] In this embodiment, combined with the Figure 4 and attached Figure 5As shown, the two-way air dryer assembly 8 includes a mounting plate 81, a rotating column 82 is mounted on a bearing at one end of the mounting plate 81, a main air outlet 821 is provided inside the rotating column 82, a side air outlet 822 is provided inside the lower end of the rotating column 82, a side connecting pipe 823 is integrally provided on one side of the rotating column 82, a side pipe 83 is fixedly mounted on one end of the side connecting pipe 823, an outgoing air duct 84 is fixedly mounted on the end of the side pipe 83 away from the side connecting pipe 823, and the outside of the rotating column 82 is fixedly mounted There is a driven gear 85, one side of the driven gear 85 is meshed with a driving gear 86, a motor 87 is fixedly installed at the lower part of the mounting plate 81, the output shaft of the motor 87 is fixedly connected to the driving gear 86, an inner air outlet pipe 88 is fixedly installed at the lower end of the air outlet pipe integrated at the lower end of the rotating column 82, an air inlet steel pipe 89 is arranged at the upper part of the mounting plate 81, a support rod 891 is fixedly installed between the air inlet steel pipe 89 and the mounting plate 81, one end of the air inlet steel pipe 89 is fixedly connected to the upper end of the rotating column 82, and the air inlet steel pipe 89 is fixedly connected to the upper end of the rotating column 82. The air inlet of the integrated arrangement is connected through a rotating air duct joint, the other end of the air inlet steel pipe 89 is fixedly installed with an air duct 892, the other end of the air duct 892 is provided with a fan 893, and the air outlet of the fan 893 is fixedly connected with the air duct 892. After the sealing performance of the motor housing is tested, the test personnel put the water-cooled motor housing 73 on the test bench 1, so that the inner air outlet duct 88 is inside the motor housing, and the outgoing air duct 84 is outside the water-cooled motor housing 73, and start the fan 893 and the motor 87. 87 drives the rotating column 82 to rotate through the meshing of the driving gear 86 and the driven gear 85, and the wind blown out by the fan 893 enters the inner air outlet duct 88 and the outer air duct 84 through the main air outlet hole 821 and the side air outlet hole 822 respectively. The wind is blown out through the inner air outlet duct 88 to dry the inner side of the water-cooled motor housing 73, and the outer air duct 84 rotates around the outer side of the water-cooled motor housing 73 to dry the outer side of the water-cooled motor housing 73, thereby reducing the complexity of subsequent operations of the sealing detection and the cost of the equipment.

[0025] In this embodiment, specifically, the main air outlet 821 and the side air outlet 822 are connected to each other.

[0026] In this embodiment, specifically, the side connecting pipe 823 and the side air outlet 822 are connected to each other.

[0027] In this embodiment, specifically, the base frame 611 and the lower box body 71 are fixedly installed side by side inside the detection platform 1, and the mounting plate 81 is fixedly installed at the lower part of the output rod of the second cylinder 5.

[0028] In the present embodiment, specifically, the connection ports integrally arranged side by side on the upper part of the box cover 61 are also connected to the water valve 721 and the pressure gauge 722 through pipelines, the water valve 721 is connected to the water pump 724, and the pressure gauge 722 is connected to the air pump 723.

[0029] In this embodiment, specifically, the water outlet end of each group of water pumps 724 is connected to the water valve 721 pipeline, the air outlet end of each group of air pumps 723 is connected to the pressure gauge 722 pipeline, and an electromagnetic air valve is installed on the pipeline connecting the air pump 723 and the pressure gauge 722.

[0030] In this embodiment, specifically, the main controller 3 adopts an industrial controller, the first cylinder 4 and the second cylinder 5 are both connected to an external air compressor, and the first cylinder 4, the second cylinder 5, the air compressor, the motor 64, the top pressure cylinder 655, the drain solenoid valve, the water valve 721, the pressure gauge 722, the air pump 723, the solenoid valve, the water pump 724, the motor 87 and the fan 893 are all electrically connected to the main controller 3.

[0031] In this embodiment, specifically, the sealing plate 651 is made of rubber.

[0032] In this embodiment, specifically, the inner surface of the lower box body 71 and the inner surface of the upper box body 72 are both provided with a rubber layer, and the setting of the rubber material and the rubber layer plays a role in sealing the water-cooled motor housing 73.

[0033] In this embodiment, specifically, the upper box body 72 is fixedly connected to the output rod of the first cylinder 4 .

[0034] In this embodiment, specifically, a sealing connector is installed on the upper rear side of the water permeability detection box 6, and the sealing connector is used to seal the cable of the top pressure electric cylinder 655 with the water permeability detection box 6, thereby ensuring the sealing degree of the water permeability detection box 6 after the box cover 61 is closed.

[0035] Utilizing the technical solution described in the present invention, or those skilled in the art designing a similar technical solution inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A water-cooled motor housing sealing detection device, characterized in that: The water-cooled motor housing seal detection device comprises a detection platform (1), a base (2) is fixedly mounted on the lower part of the detection platform (1), a main controller (3) is fixedly mounted on the front part of the base (2), a first cylinder (4) and a second cylinder (5) are fixedly mounted on the upper part of the detection platform (1), a water permeation detection box (6), a water seepage detection box (7) and a two-way air dryer assembly (8) are sequentially arranged inside the detection platform (1), a box cover (61) is sealedly mounted on the upper part of the water permeation detection box (6) through a metal buckle, a convex block (62) is integrally arranged on one side of the interior of the water permeation detection box (6), a screw rod (63) is longitudinally arranged on one side of the interior of the water permeation detection box (6), a coupling at the lower end of the screw rod (63) is connected to a rotating shaft (67), and the water permeation detection box (61) is sealed on the upper part of the water permeation detection box (6). A bottom frame (611) is fixedly installed at the bottom of the box (6), a motor (64) is fixedly installed inside the bottom frame (611), a limit rod (66) is fixedly installed between the protrusion (62) and the bottom of the water permeability detection box (6) and parallel to the screw rod (63), a lifting plate (65) is installed between the limit rod (66) and the screw rod (63), a through hole opened on one side of the lifting plate (65) is slidably connected to the limit rod (66), and the lifting plate (65) is fixedly connected to the screw rod (63) through a ball nut, a bracket (652) is fixedly installed on the upper part of the lifting plate (65), a top plate (653) is fixedly installed on the upper part of the bracket (652), a top pressure electric cylinder (655) is fixedly installed on the upper part of the top plate (653), and the bracket (65) 2) A pressure plate (654) is provided on the upper sliding surface, the pressure plate (654) is fixedly installed with the output rod of the top pressure electric cylinder (655), the lower surface of the pressure plate (654) and the upper surface of the top plate (653) are fixedly installed with a sealing plate (651), the water seepage detection box (7) comprises an upper box body (72) and a lower box body (71) which are arranged vertically opposite to each other, the lower box body (71) is provided with a groove (711) inside, and the upper part of the upper box body (72) is provided with through holes in parallel, one of the through hole pipelines is connected to a water valve (721), and the other through hole pipeline is connected to a pressure gauge (722), and the water valve (721) pipeline is connected to a water pump (724), and the two-way air dryer assembly (8) comprises a mounting plate (81), and the mounting plate (81) A rotating column (82) is installed on a bearing at one end, a main air outlet hole (821) is provided inside the rotating column (82), a side air outlet hole (822) is provided inside the lower end of the rotating column (82), a side connecting pipe (823) is integrally provided on one side of the rotating column (82), a side pipe (83) is fixedly installed on one end of the side connecting pipe (823), an outgoing air duct (84) is fixedly installed on one end of the side connecting pipe (823), a driven gear (85) is fixedly installed on the outside of the rotating column (82), a driving gear (86) is meshedly provided on one side of the driven gear (85), a motor (87) is fixedly installed on the lower part of the mounting plate (81), and an output shaft of the motor (87) is fixedly connected to the driving gear (86).An inner air outlet pipe (88) is fixedly installed at the lower end of the air outlet pipe integrally arranged at the lower end of the rotating column (82); an air inlet steel pipe (89) is arranged at the upper part of the mounting plate (81); a support rod (891) is fixedly installed between the air inlet steel pipe (89) and the mounting plate (81); one end of the air inlet steel pipe (89) is connected to an air inlet integrally arranged at the upper end of the rotating column (82) via a rotating air pipe joint; an air duct (892) is fixedly installed at the other end of the air inlet steel pipe (89); a fan (893) is arranged at the other end of the air duct (892); and an air outlet of the fan (893) is fixedly connected to the air duct (892).

2. The water-cooled motor housing sealing detection device according to claim 1, characterized in that: The main air outlet (821) and the side air outlet (822) are arranged in communication.

3. The water-cooled motor housing sealing detection device according to claim 1, characterized in that: The side connecting pipe (823) and the side air outlet hole (822) are connected.

4. The water-cooled motor housing sealing detection device according to claim 1, characterized in that: The base frame (611) and the lower box body (71) are fixedly mounted side by side inside the testing platform (1), and the mounting plate (81) is fixedly mounted on the lower part of the output rod of the second cylinder (5).

5. The water-cooled motor housing sealing detection device according to claim 1, characterized in that: The connection ports integrally arranged side by side on the upper part of the box cover (61) are also connected to a water valve (721) and a pressure gauge (722) through pipelines. The water valve (721) is connected to a water pump (724), and the pressure gauge (722) is connected to an air pump (723).

6. The water-cooled motor housing sealing detection device according to claim 1, characterized in that: The water outlet end of each group of water pumps (724) is connected to the water valve (721) pipeline, the air outlet end of each group of air pumps (723) is connected to the air pressure gauge (722) pipeline, and an electromagnetic air valve is installed on the pipeline connecting the air pump (723) and the air pressure gauge (722).

7. The water-cooled motor housing sealing detection device according to claim 1, characterized in that: The upper box body (72) is fixedly connected to the output rod of the first cylinder (4).

8. The water-cooled motor housing sealing detection device according to claim 1, characterized in that: The rotating shaft (67) is fixedly mounted on the water permeability detection box (6) via a sealed bearing, and the lower end of the rotating shaft (67) extends to the outside of the water permeability detection box (6), and the output shaft of the motor (64) is connected to the lower end of the rotating shaft (67) via a coupling.

9. The water-cooled motor housing sealing detection device according to claim 1, characterized in that: A drainage hole (712) is provided inside the lower box body (71), and a drainage solenoid valve is fixedly installed at the bottom of the drainage hole (712).

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