A double-station airtightness detection device with interchangeable production

Abstract

The utility model relates to an airtight detection device, in particular to an exchangeable double-station airtight detection device, which solves the problem that existing airtight detection equipment cannot meet the airtight detection requirements of various types of gearbox housings and motor housings. The first cylinder and the second cylinder piston rods of the utility model are respectively connected to a first movable plate and a second movable plate, and the bottoms of the two movable plates are respectively connected to a first upper exchange plate and a second upper exchange plate, and the first movable plate and the first upper exchange plate, and the second movable plate and the second upper exchange plate are positioned by exchange pins, and the openings of the gearbox housing and the motor housing are respectively blocked by sealing cylinders arranged at the bottoms of the first upper exchange plate and the second upper exchange plate; the first lower exchange plate is used to cooperate with the first upper exchange plate to block the two ends of the gearbox housing, and the second lower exchange plate is used to cooperate with the second upper exchange plate to block the two ends of the motor housing, and then the airtightness in the corresponding chambers of the two housings is detected by three airtight detection parts connected to a leak detector.

Description

Technical Field

[0001] The utility model relates to an airtight detection device, in particular to an exchangeable double-station airtight detection device. Background Art

[0002] With the continuous development of the automobile industry, more and more vehicles are beginning to use electronically controlled mechanical automatic transmissions. Among them, the electronically controlled mechanical automatic transmissions of heavy trucks mostly use gas as the driving source. Therefore, this type of automatic transmission has higher requirements for sealing. Therefore, the transmission housing needs to be tested for air tightness before leaving the factory; in addition, the motor used in conjunction with the transmission also has a water channel for heat dissipation in its housing due to heat dissipation issues. If there is a problem with the water channel sealing, it will affect the normal operation of the motor.

[0003] Due to their special structure, shell products need to block multiple processing surfaces and orifice positions when conducting air tightness tests. Traditional methods mostly use manual bolts to fix the bearing hole sealing plate to the processing surface and orifice position, then ventilate the shell, and then use a leakage instrument to test the air tightness. This method has the advantages of low investment cost, high compatibility, and no need for positioning devices when conducting small-batch air tightness tests. However, when conducting large-scale air tightness tests, it has the disadvantages of large positioning deviations and high labor intensity, and the detection efficiency is very low, which does not meet the needs of efficient detection.

[0004] The Chinese utility model patent with announcement number CN218982389U discloses a double-station airtightness detection device, including a supporting chassis, wherein a discharging conveying assembly, a good product storage box and a bad product storage box are arranged in the supporting chassis, wherein the discharging conveying assembly is located above the good product storage box and the bad product storage box, wherein a workbench is arranged on the upper surface of the supporting chassis, wherein a feeding assembly, an airtightness detection assembly and a conveying module are arranged on the workbench, wherein the conveying module is located above the feeding assembly, wherein the airtightness detection assembly is located on one side of the feeding assembly, wherein the airtightness detection assembly includes an airtightness detection fixture, a clamping structure, a rotating clamping structure, an upper discharge port and a lower discharge port. The above-mentioned double-station airtightness detection device can improve the efficiency of airtightness detection, but it can only perform airtightness detection on one type of housing products, and cannot meet the airtightness detection requirements of various types of gearbox housings and motor housings. Utility Model Content

[0005] The utility model aims to solve the technical problem that the existing airtightness detection equipment cannot meet the airtightness detection requirements of various types of gearbox housings and motor housings, and to provide a convertible double-station airtightness detection device.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A double-station airtightness detection device with interchangeable production, comprising a base and a mounting frame arranged on the base, a material conveying assembly is arranged on the base below the mounting frame, and a pressing assembly is arranged on the mounting frame, characterized in that it also comprises an upper production exchange plate, a lower production exchange plate, a plugging assembly and a leak detector;

[0008] The clamping assembly comprises a first cylinder and a second cylinder arranged on the top plate of the mounting frame, a first movable plate and a second movable plate are arranged at the bottom of the top plate, and piston rods of the first cylinder and the second cylinder are respectively connected to the first movable plate and the second movable plate after passing through the top plate; the leak detector is arranged on the top plate;

[0009] The upper production change plate comprises a first upper production change plate and a second upper production change plate respectively mounted on the bottom of the first moving plate and the second moving plate; pin holes are provided on the first upper production change plate and the first moving plate, and on the second upper production change plate and the second moving plate, and production change pins are installed in the pin holes;

[0010] The plugging assembly includes a plurality of first plugging cylinders arranged at the bottom of the first upper production change plate and a plurality of second plugging cylinders arranged at the bottom of the second upper production change plate, and the piston rod ends of the first plugging cylinders and the second plugging cylinders are respectively connected with plugs for plugging the holes on the side wall of the gearbox housing and the holes on the side wall of the motor housing;

[0011] The material conveying assembly includes a linear guide rail installed on the base and a linear slider arranged on the linear guide rail, a lower moving plate is connected to the top of the linear slider, and the lower production changing plate includes a first lower production changing plate and a second lower production changing plate installed on the lower moving plate, and pin holes are arranged on the first lower production changing plate, the second lower production changing plate and the lower moving plate, and production changing pins are installed in the pin holes; the first lower production changing plate is used to cooperate with the first upper production changing plate to block the two ends of the gearbox housing, and the second lower production changing plate is used to cooperate with the second upper production changing plate to block the two ends of the motor housing, and positioning pins for cooperating with the positioning pin holes of the gearbox housing and the motor housing are respectively arranged on the first lower production changing plate and the second lower production changing plate;

[0012] A first airtight detection component is provided at the bottom of the first upper change plate, and a second airtight detection component and a third airtight detection component are provided at the bottom of the second upper change plate. The first airtight detection component, the second airtight detection component and the third airtight detection component each include two input ports and one output port. The two input ports are respectively used to connect to a gas pipeline and a leak detector. The output port of the first airtight detection component is used to connect to the inner cavity of a gearbox housing. The output ports of the second airtight detection component and the third airtight detection component are respectively used to connect to the waterway cavity and the inner cavity of a motor housing.

[0013] Furthermore, four production change rods are arranged in a rectangular distribution on the first lower production change plate, and the four production change rods are arranged corresponding to the first upper production change plate;

[0014] Four production-changing rods are arranged in a rectangular shape on the second lower production-changing plate, and the four production-changing rods are arranged corresponding to the second upper production-changing plate.

[0015] Furthermore, two first guide rods are arranged on the first movable plate, and the two first guide rods are symmetrically arranged on both sides of the first cylinder. One end of the first guide rod is connected to the upper surface of the first movable plate through a fixed base, and two first guide holes are correspondingly opened on the top plate, and a linear bearing is arranged in each of the first guide holes, and the other ends of the two first guide rods pass through the two linear bearings respectively;

[0016] Two second guide rods are arranged on the second movable plate, and the two are symmetrically arranged on both sides of the second cylinder; one end of the second guide rod is connected to the upper surface of the second movable plate through a fixed base, and two second guide holes are correspondingly opened on the top plate, and a linear bearing is arranged in each second guide hole, and the other ends of the two second guide rods pass through the two linear bearings respectively.

[0017] Furthermore, a bearing hole sealing plate and a plurality of end face sealing plates are provided at the bottom of the first upper production change plate, the bottom surface of the bearing hole sealing plate is used to abut against the bearing hole of the gearbox housing to achieve the sealing of the bearing hole of the gearbox housing, and the bottom surface of the end face sealing plate is used to abut against the end surface of the gearbox housing to achieve the sealing of the upper end surface of the gearbox housing;

[0018] A clamping ring is installed at the bottom of the second upper production change plate, and the bottom surface of the clamping ring is used to abut against the upper end surface of the motor housing to achieve sealing of the upper end surface of the motor housing.

[0019] Furthermore, the top plate is a rectangular structure, and the first cylinder and the second cylinder are symmetrically arranged about the mid-plane of the long side of the top plate; there are two linear guide rails and they are parallel to each other, and the extension direction of the linear guide rails is perpendicular to the extension direction of the long side of the top plate. A feeding cylinder is installed on the base between the two linear guide rails, and the piston rod of the feeding cylinder is connected to the lower moving plate.

[0020] Furthermore, a circular filling column is provided on the first lower production change plate at a position corresponding to the inner cavity of the gearbox housing, and a plurality of filling blocks are provided on the second lower production change plate at a position corresponding to the inner cavity of the motor housing.

[0021] Furthermore, the first cylinder and the second cylinder are respectively mounted on the top plate through square supports, and the piston rod ends of the first cylinder and the second cylinder are connected to floating joints, and the first movable plate and the second movable plate are connected to the floating joints through flanges arranged thereon.

[0022] Furthermore, the mounting frame includes four fixing columns which are arranged in a rectangular distribution, and the top plate is arranged on top ends of the four fixing columns.

[0023] Furthermore, a protection frame is provided on the outer cover of the mounting frame. The protection frame is a rectangular structure and is installed on the base. Protective plates are provided on the rear side wall, the left side wall and the right side wall of the protection frame.

[0024] Furthermore, a limit block is arranged on the protection plate on the rear side wall of the protection frame corresponding to the position of the lower movable plate; and a safety light curtain for personnel safety protection is arranged on the front side wall of the protection frame.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] (1) The utility model provides a double-station airtightness detection device with interchangeable production, wherein a first upper production changing plate and a second upper production changing plate are respectively arranged at the bottom of a first movable plate and a second movable plate connected to the ends of the piston rods of the first cylinder and the second cylinder, a plurality of first blocking cylinders for blocking the openings of the side wall of the gearbox housing are arranged at the bottom of the first upper production changing plate, and a plurality of second blocking cylinders for blocking the openings of the side wall of the motor housing are arranged at the bottom of the second upper production changing plate; pin holes are arranged on the first upper production changing plate and the first movable plate, and production changing pins are installed in the pin holes; pin holes are arranged on the second upper production changing plate and the second movable plate, and production changing pins are installed in the pin holes; the first lower production changing plate and the second lower production changing plate are both installed on the lower movable plate; pin holes are arranged on the first lower production changing plate, the second lower production changing plate and the lower movable plate, and production changing pins are installed in the pin holes; the production changing pins can play a role in rapid positioning when replacing the upper production changing plate and the lower production changing plate, thereby ensuring production changing efficiency. The second lower change plate is used to cooperate with the second upper change plate to seal the two ends of the motor housing placed on the second lower change plate, and positioning pins for cooperating with the positioning pin holes of the gearbox housing and the motor housing are respectively provided on the first lower change plate and the second lower change plate; in this way, by replacing different upper change plates and corresponding lower change plates, different types of motor housings or gearbox housings can be adapted to achieve change and airtightness detection.

[0027] (2) The utility model provides a double-station airtight detection device with interchangeable production lines. Four production changing rods are arranged in a rectangular shape on the first lower production changing plate and the second lower production changing plate. Because the first upper production changing plate and the second upper production changing plate are connected with many components, such as the first blocking cylinder, the second blocking cylinder, the first airtight detection component, the second airtight detection component, the third airtight detection component, etc., their weight is very heavy. When changing production lines, the first upper production changing plate and the second upper production changing plate need to be disassembled. If they rely on manpower support, the labor intensity of the operators will be increased. Therefore, a production changing rod is provided. After disassembly, the two upper production changing plates are placed on the production changing rod, and then both are taken out by moving the lower moving plate, which is labor-saving and convenient.

[0028] (3) The utility model provides a double-station airtightness detection device with interchangeable production lines. A circular filling column is arranged on the first lower interchangeable production plate at an inner cavity position corresponding to the gearbox housing, and a plurality of filling blocks are arranged on the second lower interchangeable production plate at an inner cavity position corresponding to the motor housing. The circular filling column and the filling blocks can occupy a part of the inner cavity volume, which can save inflation time when inflating the inner cavity.

[0029] (4) The utility model provides a double-station airtightness detection device with interchangeable production. A feeding cylinder is installed on the base between the linear guide rails. The piston rod of the feeding cylinder is connected to the lower moving plate. In this way, loading and unloading of materials can be completed through the movement of the piston rod of the feeding cylinder, eliminating manual handling and saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The utility model is a schematic diagram of a double-station airtightness detection device embodiment. Figure 1 (protective frame not shown);

[0031] Figure 2 The structure of the embodiment of the utility model is shown in FIG. Figure 2 (the first upper production-changing board, the second upper production-changing board, the first lower production-changing board and the second lower production-changing board are not shown);

[0032] Figure 3 This is a schematic diagram of the connection between the first cylinder and the second cylinder in the embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the distribution of the first blocking cylinder and the second blocking cylinder in the embodiment of the utility model;

[0034] Figure 5 This is a schematic diagram of the distribution of pin holes on the first movable plate and the second movable plate in the embodiment of the utility model;

[0035] Figure 6 It is a schematic diagram of the coordination of the first lower production-changing plate, the lower moving plate and the production-changing pin in the embodiment of the utility model;

[0036] Figure 7 This is a schematic diagram of an embodiment of the utility model in the loading process;

[0037] Figure 8 This is a schematic diagram of an embodiment of the utility model in a loading completion state;

[0038] Fig. 9 It is a schematic diagram of an embodiment of the utility model in a compressed state.

[0039] The following are the descriptions of the reference numerals:

[0040] 1-base, 2-mounting frame, 201-top plate, 202-fixed column; 3-first cylinder, 301-floating joint, 302-flange, 303-square support; 4-second cylinder, 5-first moving plate, 6-second moving plate, 7-first upper production change plate, 71-bearing hole sealing plate, 72-end face sealing plate; 8-second upper production change plate, 81-clamping ring; 9-first lower production change plate, 91-locating pin; 10-second lower production change plate, 11-lower moving plate, 12-leak detector, 13-production change pin, 131- Pin hole; 14-first blocking cylinder, 15-second blocking cylinder, 16-linear guide rail, 17-linear slider, 18-first air-tight detection piece, 19-second air-tight detection piece, 20-third air-tight detection piece, 21-production change rod, 22-first guide rod, 23-second guide rod, 24-fixed base, 25-circular filling column, 26-filling block, 27-feeding cylinder, 28-limiting block, 29-protection frame, 291-protective plate; 30-gearbox housing, 31-motor housing, 32-safety light curtain. DETAILED DESCRIPTION

[0041] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] Reference Figure 1-Figure 9 The utility model is a replaceable double-station airtightness detection device comprising a base 1 and a mounting frame 2 arranged on the base 1, the mounting frame 2 is a rectangular structure, including four fixed columns 202 arranged in a rectangular distribution, a top plate 201 is arranged at the top of the four fixed columns 202, the top plate 201 is a rectangular structure, the first cylinder 3 and the second cylinder 4 of the clamping assembly are symmetrically arranged about the middle dividing plane of the long side of the top plate 201, and a leak detector 12 is arranged on the top plate 201.

[0043] In order to improve the connection stability between the first cylinder 3 and the second cylinder 4, the first cylinder 3 and the second cylinder 4 are respectively installed on the top plate 201 through the square support 303, and the piston rods of the first cylinder 3 and the second cylinder 4 are connected to the floating joint 301 at both ends after passing through the top plate 201, and the first moving plate 5 and the second moving plate 6 are arranged at the bottom of the top plate 201. The first moving plate 5 and the second moving plate 6 are both provided with flanges 302 for connecting with the floating joint 301. The first moving plate 5 and the second moving plate 6 are connected to the floating joint 301 through the flanges 302 arranged thereon. If the piston rod is not in the vertical direction during movement, the floating joint 301 can play a buffering role to prevent the piston rod from being damaged.

[0044] In order to ensure that the piston rods of the two cylinders can move in the vertical direction, two first guide rods 22 are arranged on the first movable plate 5, and the two are symmetrically arranged on both sides of the first cylinder 3. One end of the first guide rod 22 is connected to the upper surface of the first movable plate 5 through a fixed base 24. Two first guide holes are correspondingly opened on the top plate 201, and a linear bearing is arranged in each first guide hole. The other ends of the two first guide rods pass through the two linear bearings respectively; two second guide rods 23 are arranged on the second movable plate 6, and the two are symmetrically arranged on both sides of the second cylinder 4; one end of the second guide rod 23 is connected to the upper surface of the second movable plate 6 through a fixed base 24, and two second guide holes are correspondingly opened on the top plate 201, and a linear bearing is arranged in each second guide hole, and the other ends of the two second guide rods 23 pass through the two linear bearings respectively. The first guide rod 22 and the second guide rod 23 provide guidance for the piston rods of the two cylinders, thereby ensuring the stability of movement.

[0045] The first upper production change plate 7 and the second upper production change plate 8 are respectively installed on the bottom of the first movable plate 5 and the second movable plate 6 by screws. In order to quickly locate, install and disassemble during production change, pin holes 131 are opened on the first upper production change plate 7 and the first movable plate 5, and on the second upper production change plate 8 and the second movable plate 6. The pin holes 131 are equipped with production change pins 13. A conveying assembly is arranged on the base 1 below the mounting frame 2, including a linear guide rail 16 installed on the base 1 and a linear slider 17 arranged on the linear guide rail 16. The top of the linear slider 17 is connected to the lower movable plate 11. Two linear guide rails 16 are arranged and are parallel to each other. The extension direction of the linear guide rail 16 is perpendicular to the extension direction of the long side of the top plate 201. A feeding cylinder 27 is installed on the base 1 between the two linear guide rails 16. The piston rod of the feeding cylinder 27 is connected to the lower movable plate 11. Automatic loading and unloading is realized by the feeding cylinder 27, which saves manpower. The first lower production-changing plate 9 and the second lower production-changing plate 10 are mounted on the lower movable plate 11 by screws. Pin holes 131 are arranged on the first lower production-changing plate 9, the second lower production-changing plate 10 and the lower movable plate 11. Production-changing pins 13 are installed in the pin holes 131, so that the two lower production-changing plates can be quickly disassembled and assembled when changing production.

[0046] The first cylinder 3, the first lower production-changing plate 9 and the first upper production-changing plate 7 constitute a first workstation, and the first lower production-changing plate 9 is used to cooperate with the first upper production-changing plate 7 to seal the two ends of the gearbox housing 30 placed on the first lower production-changing plate 9; the second cylinder 4, the second upper production-changing plate 8 and the second lower production-changing plate 10 constitute a second workstation, and the second lower production-changing plate 10 is used to cooperate with the second upper production-changing plate 8 to seal the two ends of the motor housing 31 placed on the second lower production-changing plate 10. In order to position the two housings, positioning pins 91 for cooperating with the positioning pin holes of the gearbox housing 30 and the motor housing 31 are respectively provided on the first lower production-changing plate 9 and the second lower production-changing plate 10. In this way, when the two housings are placed on the lower production-changing plate, it is only necessary to align the positioning pin holes with the positioning pins 91, and there is no need to adjust the position manually, thereby saving manpower.

[0047] Because there are many holes on the outer wall of the gearbox housing 30 and the motor housing 31, all of these holes need to be sealed when performing air tightness testing, so a plugging assembly is also provided, including a plurality of first plugging cylinders 14 provided at the bottom of the first upper production change plate 7 and a plurality of second plugging cylinders 15 provided at the bottom of the second upper production change plate 8. The piston rod ends of the first plugging cylinders 14 and the second plugging cylinders 15 are respectively connected with plugs for plugging the holes on the side wall of the gearbox housing 30 and the holes on the side wall of the motor housing 31. The outer wall hole is sealed by the cooperation of the first plugging cylinders 14 and the second plugging cylinders 15.

[0048] Since the gearbox housing 30 and the motor housing 31 have different structures, it is necessary to set airtight detection parts according to the actual situation when performing airtight detection on the two. Because a water channel is arranged inside the motor housing 31, it is necessary to detect not only its inner cavity but also the water channel. Therefore, a first airtight detection part 18 is arranged at the bottom of the first upper production change plate 7, and a second airtight detection part 19 and a third airtight detection part 20 are arranged at the bottom of the second upper production change plate 8. The first airtight detection part 18, the second airtight detection part 19 and the third airtight detection part 20 each include two input ports and one The output port and the two input ports are respectively used to connect with the gas pipeline and the leak detector 12; the output port of the first airtight detection component 18 is used to connect with the inner cavity of the gearbox housing 30; the output port of the second airtight detection component 19 is used to connect with the water channel cavity of the motor housing 31; the output port of the third airtight detection component 20 is used to connect with the inner cavity of the motor housing 31, so that the three airtight detection components can inject the gas in the gas pipeline into the corresponding cavity, and the leak detector 12 is connected with the corresponding cavity through the input ports of the three airtight detection components, and whether a leakage occurs is obtained by detecting the pressure change.

[0049] Because the inner cavity space of the entire gearbox housing 30 and the motor housing 31 is very large, the inflation process takes a lot of time, so a circular filling column 25 is provided on the first lower change plate 9 corresponding to the inner cavity position of the gearbox housing 30, and a plurality of filling blocks 26 are provided on the second lower change plate 8 corresponding to the inner cavity position of the motor housing 31. The circular filling column 25 and the filling block 26 can occupy a part of the inner cavity volume, which can save inflation time when inflating the inner cavity.

[0050] In order to improve the sealing effect, a bearing hole sealing plate 71 and a plurality of end face sealing plates 72 are provided at the bottom of the first upper production change plate 7. The bottom surface of the bearing hole sealing plate 71 is used to abut against the bearing hole of the gearbox housing 30 to achieve the bearing hole sealing of the gearbox housing 30, and the bottom surface of the end face sealing plate 72 is used to abut against the end face of the gearbox housing 30 to achieve the upper end face sealing of the gearbox housing 30. A clamping ring 81 is installed at the bottom of the second upper production change plate 8, and the bottom surface of the clamping ring 81 abuts against the upper end face of the motor housing 31 to achieve the upper end face sealing of the motor housing 31.

[0051] When changing production, it is necessary to disassemble the first upper production-changing plate 7 and the second upper production-changing plate 8, but many components are connected to the two, such as the first blocking cylinder 14, the second blocking cylinder 15, the first airtight detection component 18, the second airtight detection component 19, the third airtight detection component 20, etc., which makes them very heavy. If they rely on manpower support, the labor intensity of the operators will be increased. Therefore, four production-changing rods 21 are arranged in a rectangular shape on the first lower production-changing plate 9, and the four production-changing rods 21 are arranged corresponding to the first upper production-changing plate 7; four production-changing rods 21 are also arranged in a rectangular shape on the second lower production-changing plate 10, and the four production-changing rods 21 are arranged corresponding to the second upper production-changing plate 8. When changing production, the production-changing rods 21 are installed on the first lower production-changing plate 9 and the second lower production-changing plate 10. At this time, the two disassembled upper production-changing plates can be placed on the production-changing rods 21, and then the two can be taken out by moving the lower movable plate 11, which is very labor-saving.

[0052] When the whole device is in operation, because there is cylinder movement, in order to prevent personal injury, a protective frame 29 is provided on the outer cover of the mounting frame 2. The protective frame 29 is a rectangular structure and is installed on the base 1. Protective plates 291 are provided on the rear side wall, left side wall and right side wall of the protective frame 29. At this time, only the front side wall for the conveying material assembly to pass through is left. A safety light curtain 32 for personal safety protection is provided on the front side wall. In order to prevent the lower moving plate 11 from moving too far, a limit block 28 is provided on the protective plate 291 on the rear side wall of the protective frame 29 corresponding to the position of the lower moving plate 11.

[0053] During use, if the shell parts of the previous model have completed the airtightness test and need to be replaced, the two lower change plates equipped with change rods 21 are sent under the two upper change plates by the feeding cylinder 27, and the two upper change plates are disassembled and placed on the change rods 21, and then the two upper change plates are moved out by the feeding cylinder 27, and then the corresponding upper and lower change plates are replaced, and the next airtightness test can be carried out, the gearbox housing 30 is hoisted onto the first lower change plate 9, and the motor housing 31 is hoisted onto the second lower change plate 10, and then the two housings are sent under the mounting frame 2 by the feeding cylinder 27, the first cylinder 3 and the second cylinder 4 are started, the two housings are pressed and sealed, and then the first blocking cylinder 14 and the second blocking cylinder 15 are started to close all the openings. At this time, air is inflated into the corresponding inner cavity through the three airtight detection parts, and the results are observed through the leak detector 12. After the airtight detection is completed, the piston rods of the first cylinder 3 and the second cylinder 4 move upward, and the feeding cylinder 27 moves the two shells out of the mounting frame 2.

[0054] The embodiments described above are merely descriptions of the specific implementation methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A double-station airtightness detection device with interchangeable production, comprising a base (1) and a mounting frame (2) arranged on the base (1), a material conveying assembly is arranged on the base (1) below the mounting frame (2), and a pressing assembly is arranged on the mounting frame (2), characterized in that: It also includes an upper production change plate, a lower production change plate, a plugging assembly and a leak detector (12); The clamping assembly comprises a first cylinder (3) and a second cylinder (4) arranged on a top plate (201) of the mounting frame (2); a first movable plate (5) and a second movable plate (6) are arranged at the bottom of the top plate (201); piston rods of the first cylinder (3) and the second cylinder (4) pass through the top plate (201) and are respectively connected to the first movable plate (5) and the second movable plate (6); the leak detector (12) is arranged on the top plate (201); The upper production change plate comprises a first upper production change plate (7) and a second upper production change plate (8) respectively mounted on the bottom of the first moving plate (5) and the second moving plate (6); pin holes (131) are provided on the first upper production change plate (7) and the first moving plate (5), and on the second upper production change plate (8) and the second moving plate (6), and a production change pin (13) is installed in the pin hole (131); The blocking assembly comprises a plurality of first blocking cylinders (14) arranged at the bottom of the first upper production change plate (7) and a plurality of second blocking cylinders (15) arranged at the bottom of the second upper production change plate (8), and the piston rod ends of the first blocking cylinders (14) and the second blocking cylinders (15) are respectively connected to plugs for blocking the holes on the side wall of the gearbox housing (30) and for blocking the holes on the side wall of the motor housing (31); The material conveying assembly comprises a linear guide rail (16) mounted on the base (1) and a linear slider (17) arranged on the linear guide rail (16); the top of the linear slider (17) is connected to a lower moving plate (11); the lower production change plate comprises a first lower production change plate (9) and a second lower production change plate (10) mounted on the lower moving plate (11); the first lower production change plate (9), the second lower production change plate (10) and the lower moving plate (11) are all provided with pin holes (131) , a change pin (13) is installed in the pin hole (131); the first lower change plate (9) is used to cooperate with the first upper change plate (7) to block the two ends of the gearbox housing (30), and the second lower change plate (10) is used to cooperate with the second upper change plate (8) to block the two ends of the motor housing (31), and positioning pins (91) for cooperating with positioning pin holes of the gearbox housing (30) and the motor housing (31) are respectively provided on the first lower change plate (9) and the second lower change plate (10); A first airtight detection component (18) is provided at the bottom of the first upper change plate (7), and a second airtight detection component (19) and a third airtight detection component (20) are provided at the bottom of the second upper change plate (8). The first airtight detection component (18), the second airtight detection component (19) and the third airtight detection component (20) each include two input ports and one output port. The two input ports are respectively used to connect to a gas pipeline and a leak detector (12). The output port of the first airtight detection component (18) is used to connect to an inner cavity of a gearbox housing (30). The output ports of the second airtight detection component (19) and the third airtight detection component (20) are respectively used to connect to a water channel cavity and an inner cavity of a motor housing (31).

2. The interchangeable dual-station airtightness detection device according to claim 1 is characterized in that: Four production change rods (21) are arranged in a rectangular distribution on the first lower production change plate (9), and the four production change rods (21) are arranged corresponding to the first upper production change plate (7); Four production-changing rods (21) are arranged in a rectangular distribution on the second lower production-changing plate (10), and the four production-changing rods (21) are arranged corresponding to the second upper production-changing plate (8).

3. The interchangeable dual-station airtightness detection device according to claim 2 is characterized in that: Two first guide rods (22) are arranged on the first movable plate (5), and the two first guide rods (22) are symmetrically arranged on both sides of the first cylinder (3). One end of the first guide rod (22) is connected to the upper surface of the first movable plate (5) through a fixed base (24). Two first guide holes are correspondingly opened on the top plate (201), and a linear bearing is arranged in each of the first guide holes. The other ends of the two first guide rods pass through the two linear bearings respectively. Two second guide rods (23) are arranged on the second movable plate (6), and the two second guide rods (23) are symmetrically arranged on both sides of the second cylinder (4); one end of the second guide rod (23) is connected to the upper surface of the second movable plate (6) through a fixed base (24), and two second guide holes are correspondingly opened on the top plate (201), and a linear bearing is arranged in each second guide hole, and the other ends of the two second guide rods (23) pass through the two linear bearings respectively.

4. The interchangeable dual-station airtightness detection device according to claim 3 is characterized in that: A bearing hole sealing plate (71) and a plurality of end face sealing plates (72) are provided at the bottom of the first upper production change plate (7); the bottom surface of the bearing hole sealing plate (71) is used to abut against the bearing hole of the gearbox housing (30) to achieve the sealing of the bearing hole of the gearbox housing (30); and the bottom surface of the end face sealing plate (72) is used to abut against the end face of the gearbox housing (30) to achieve the sealing of the upper end face of the gearbox housing (30); A clamping ring (81) is installed at the bottom of the second upper production change plate (8), and the bottom surface of the clamping ring (81) is used to abut against the upper end surface of the motor housing (31) to achieve sealing of the upper end surface of the motor housing (31).

5. The interchangeable double-station airtightness detection device according to claim 4 is characterized in that: The top plate (201) is a rectangular structure, and the first cylinder (3) and the second cylinder (4) are symmetrically arranged with respect to the mid-plane of the long side of the top plate (201); two linear guide rails (16) are arranged and are parallel to each other, and the extension direction of the linear guide rails (16) is perpendicular to the extension direction of the long side of the top plate (201); a feeding cylinder (27) is installed on the base (1) between the two linear guide rails (16), and the piston rod of the feeding cylinder (27) is connected to the lower movable plate (11).

6. The interchangeable dual-station airtightness detection device according to any one of claims 1 to 5, characterized in that: A circular filling column (25) is provided on the first lower production change plate (9) at a position corresponding to the inner cavity of the gearbox housing (30), and a plurality of filling blocks (26) are provided on the second lower production change plate (10) at a position corresponding to the inner cavity of the motor housing (31).

7. The interchangeable dual-station airtightness detection device according to claim 6 is characterized in that: The first cylinder (3) and the second cylinder (4) are respectively mounted on the top plate (201) via square supports (303), and the piston rod ends of the first cylinder (3) and the second cylinder (4) are both connected to floating joints (301), and the first movable plate (5) and the second movable plate (6) are connected to the floating joints (301) via flanges (302) arranged thereon.

8. The interchangeable dual-station airtightness detection device according to claim 7 is characterized in that: The mounting frame (2) comprises four fixing columns (202) arranged in a rectangular distribution, and the top plate (201) is arranged on the top ends of the four fixing columns (202).

9. The interchangeable dual-station airtightness detection device according to claim 1, characterized in that: A protective frame (29) is provided on the outer cover of the mounting frame (2). The protective frame (29) is a rectangular structure and is installed on the base (1). Protective plates (291) are provided on the rear side wall, the left side wall and the right side wall of the protective frame (29).

10. The interchangeable double-station airtightness detection device according to claim 9, characterized in that: A limit block (28) is arranged on a protective plate (291) on the rear side wall of the protective frame (29) corresponding to the position of the lower movable plate (11); and a safety light curtain (32) for personnel safety protection is arranged on the front side wall of the protective frame (29).

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