Air-tightness detection device for motor casing of air conditioner

Abstract

The utility model relates to the technical field of air tightness detection, and discloses an air conditioner motor casing air tightness detection device, which comprises a hollow plate, supporting legs are fixedly arranged at four opposite angles of the lower plate surface of the hollow plate, a water tank is arranged on the lower plate surface of the hollow plate, a mounting plate is slidably arranged between two sides of the inner wall of the hollow plate, and the inner wall of the hollow plate is provided with an air inlet and an air outlet. A first U-shaped plate is fixedly mounted on the upper plate surface of the mounting plate, a placement plate is fixedly mounted on the upper plate surface of the mounting plate, and a motor shell body is placed on the upper plate surface of the placement plate. The air pump is connected with the air pipe, and compressed air is filled into the motor shell body through the air pipe, so that bubbles generated by the motor shell body in water are more obvious, observation by workers is facilitated, and the detection precision and the detection efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of airtightness detection, in particular to an airtightness detection device for an air conditioner motor housing. Background Technique

[0002] With the development of society and the improvement of people's living standards, air conditioners have become necessities in family life. An air conditioner motor refers to an electric motor used to drive an air conditioner device for refrigeration or heating. After the production of the air conditioner motor, an additional housing is installed to protect the components inside the motor. The airtightness of the housing determines the quality of the housing. Therefore, after the production of the housing, it is necessary to detect its airtightness.

[0003] In the prior art, the airtightness detection usually involves filling the housing with gas, then manually blocking both ends of the housing, and finally putting it into water to observe whether there are bubbles generated, so as to detect the airtightness of the housing. This detection method makes the air pressure filled into the housing relatively small, and it is not easy to observe the bubbles, resulting in misjudgment by the staff and reducing the detection accuracy. In addition, the manual clamping speed is slow, the blocking force is insufficient, the work intensity is high, and the hands need to be soaked in water for a long time, resulting in low detection efficiency. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an airtightness detection device for an air conditioner motor housing, which has the advantages of high detection accuracy and large blocking force, and solves the problems raised in the above background technique.

[0005] The utility model provides the following technical scheme: an airtightness detection device for an air conditioner motor housing, including a hollow plate. Four diagonal corners of the lower plate surface of the hollow plate are fixedly installed with legs. A water tank is arranged on the lower plate surface of the hollow plate. An installation plate is slidably installed between the two sides of the inner wall of the hollow plate. A first U-shaped plate is fixedly installed on the upper plate surface of the installation plate. A placement plate is fixedly installed on the upper plate surface of the installation plate. A motor housing body is placed on the upper plate surface of the placement plate. Two second U-shaped plates are symmetrically distributed and fixedly installed on the upper plate surface of the hollow plate. A blocking device is arranged between the two sides of the inner wall of the first U-shaped plate. A lifting assembly is arranged at the tops of the two second U-shaped plates.

[0006] Preferably, the blocking device includes two bidirectional lead screws rotatably installed symmetrically between the two sides of the inner wall of the first U-shaped plate. One end of each of the two bidirectional lead screws penetrates through one side of the first U-shaped plate. Two clamping plates are symmetrically threaded on the outer surface of the bidirectional lead screw. Sealing gaskets are arranged on the opposite sides of the clamping plates. A driving mechanism is arranged on one side of the first U-shaped plate.

[0007] Preferably, the driving mechanism includes an L-shaped block fixedly installed on the top of the first U-shaped plate. One end of the L-shaped block is provided with a servo motor. One end of one of the bidirectional lead screws is fixedly installed with a driving gear, and one end of the other bidirectional lead screw is fixedly installed with a driven gear. A chain is arranged between the driving gear and the driven gear, and the output shaft of the servo motor is fixedly connected to one side of the driving gear.

[0008] Preferably, the lifting assembly is an electric push rod. The telescopic end of the electric push rod penetrates through the top of the second U-shaped plate. Two threaded cylinders are rotatably installed on the upper plate surface of the mounting plate symmetrically. The threaded cylinders are threadedly sleeved on the telescopic end of the electric push rod.

[0009] Preferably, air pipes are inserted into the left and right sides of the first U-shaped plate symmetrically. One end of the air pipe sequentially penetrates through the first U-shaped plate, the clamping plate and the sealing gasket, and extends into the motor housing body.

[0010] Preferably, two vertical balance rods are inserted into the top of the two second U-shaped plates symmetrically. The bottom end of the balance rod penetrates through the top of the second U-shaped plate and is fixedly connected to the upper plate surface of the mounting plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. By using the plugging device to plug both ends of the motor housing body, the difficulty of manual plugging is reduced, and at the same time, the plugging force is improved. By connecting the air inflation pump to the air pipe and filling compressed air into the motor housing body through the air pipe, the bubbles generated by the motor housing body in water are made more obvious, which is convenient for the staff to observe, and the detection accuracy and detection efficiency are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of the utility model;

[0014] Figure 2 is the three-dimensional structural cross-section of the utility model Figure 1 ;

[0015] Figure 3 is the three-dimensional structural cross-section of the utility model Figure 2 ;

[0016] Figure 4 is the plane cross-sectional view of the front view of the utility model.

[0017] In the figure: 1, hollow plate; 2, support leg; 3, water tank; 4, mounting plate; 5, first U-shaped plate; 6, placement plate; 7, motor housing body; 8, second U-shaped plate; 9, plugging device; 91, bidirectional lead screw; 92, clamping plate; 93, sealing gasket; 94, driving mechanism; 941, L-shaped block; 942, servo motor; 943, driving gear; 944, driven gear; 945, chain; 10, lifting assembly; 11, threaded cylinder; 12, air pipe; 13, balance bar. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 4 , an airtightness detection device for an air conditioner motor housing, including a hollow plate 1. Support legs 2 are fixedly installed at the four corners of the lower plate surface of the hollow plate 1. Pulley (not shown in the figure) is provided at the bottom ends of the four support legs 2 to facilitate the movement of the device. A water tank 3 is arranged on the lower plate surface of the hollow plate 1, and clear water is injected into the water tank 3. A mounting plate 4 is slidably installed between the two sides of the inner wall of the hollow plate 1. A first U-shaped plate 5 is fixedly installed on the upper plate surface of the mounting plate 4. A placement plate 6 is fixedly installed on the upper plate surface of the mounting plate 4. Two arc-shaped placement grooves are formed on the upper plate surface of the placement plate 6. A motor housing body 7 is placed on the upper plate surface of the placement plate 6, and the motor housing body 7 is placed in the arc-shaped placement groove. Two second U-shaped plates 8 are symmetrically fixedly installed on the upper plate surface of the hollow plate 1. A plugging device 9 is arranged between the two sides of the inner wall of the first U-shaped plate 5. A lifting assembly 10 is arranged at the top of the two second U-shaped plates 8. The mounting plate 4 is located directly above the water tank 3 and can be moved into the water tank 3 through the lifting assembly 10.

[0020] Please refer to Figures 1 - 3 , the plugging device 9 includes two bidirectional lead screws 91 that are symmetrically and rotatably installed on both sides of the inner wall of the first U-shaped plate 5. One end of each of the two bidirectional lead screws 91 penetrates through one side of the first U-shaped plate 5. Two clamping plates 92 are symmetrically threaded and sleeved on the outer surface of the bidirectional lead screw 91. The clamping plates 92 can slide on the top of the mounting plate 4. Sealing gaskets 93 are arranged on the opposite sides of the clamping plates 92. The sealing gaskets 93 are used to improve the airtightness between the motor housing body 7 and the clamping plates 92. A driving mechanism 94 is arranged on one side of the first U-shaped plate 5. The driving mechanism 94 is used to drive the two bidirectional lead screws 91 to rotate synchronously.

[0021] Please refer to Figures 1 - 2The driving mechanism 94 includes an L-shaped block 941 fixedly mounted on the top of the first U-shaped plate 5, a servo motor 942 is arranged at one end of the L-shaped block 941, a driving gear 943 is fixedly mounted at one end of one bidirectional lead screw 91, a driven gear 944 is fixedly mounted at one end of the other bidirectional lead screw 91, a chain 945 is arranged between the driving gear 943 and the driven gear 944, the driving gear 943 and the driven gear 944 are connected by the chain 945, and the output shaft of the servo motor 942 is fixedly connected to one side of the driving gear 943.

[0022] See also Figure 2 The lifting component 10 is an electric push rod, the telescopic end of the electric push rod passes through the top of the second U-shaped plate 8, and the upper plate surface of the mounting plate 4 is symmetrically distributed and rotatably mounted with two threaded cylinders 11, which are threadedly sleeved on the telescopic end of the electric push rod to facilitate the disassembly of the mounting plate 4.

[0023] See also Figures 1 - 2 The left and right sides of the first U-shaped plate 5 are symmetrically connected with air pipes 12. One end of the air pipe 12 passes through the first U-shaped plate 5, the clamping plate 92 and the sealing gasket 93 in sequence, and extends into the motor housing body 7. An air pump (not shown in the figure) is arranged on the top of the first U-shaped plate 5. The inflation end of the air pump is connected with one end of the air pipe 12. Compressed air is filled into the air pipe 12 through the air pump, and then filled into the motor housing body 7 through the air pipe 12.

[0024] See also Figure 3 Two vertical balancing rods 13 are symmetrically inserted at the top of the two second U-shaped plates 8. The bottom end of the balancing rod 13 passes through the top of the second U-shaped plate 8 and is fixedly connected to the upper plate surface of the mounting plate 4. The balancing rod 13 is used to improve the stability of the mounting plate 4 when it is rising or falling.

[0025] Working principle: When in use, first place the two motor housing bodies 7 in the two arc-shaped placement grooves provided on the placement plate 6 respectively. Then start the servo motor 942. The output shaft of the servo motor 942 drives the driving gear 943 to rotate. Under the action of the chain 945, it drives the driven gear 944 to rotate, thereby driving the two bidirectional lead screws 91 to rotate synchronously, and then driving the two clamping plates 92 and the sealing gaskets 93 to approach each other, so that the two sealing gaskets 93 respectively block the two ends of the motor housing body 7. Subsequently, compressed air is filled into the air pipe 12 through an air inflation pump (not shown in the figure) provided on the top of the first U-shaped plate 5. The compressed air is filled into the motor housing body 7 through the air pipe 12. At this time, the lifting assembly 10 is used to push the mounting plate 4 into the water tank 3. Since the lifting assembly 10 is an electric push rod, just start the electric push rod directly. The telescopic end of the electric push rod pushes the mounting plate 4 into the water tank 3, thereby pushing the rod motor housing body 7 into the water tank 3 until the water in the water tank 3 completely submerges the motor housing body 7. At this time, observe whether there are bubbles generated on the surface of the motor housing body 7, so as to realize the airtightness detection of the motor housing body 7. The structure is simple and the operation is convenient. This device can detect the airtightness of two motor housing bodies 7 at a time, effectively improving the detection efficiency.

Claims

1. An air-tightness detection device for an air-conditioning motor housing, comprising a hollow plate (1), wherein four diagonal positions of the lower plate surface of the hollow plate (1) are fixedly mounted with legs (2), and the lower plate surface of the hollow plate (1) is provided with a water tank (3), characterized in that: A mounting plate (4) is slidably mounted between the two sides of the inner wall of the hollow plate (1); a first U-shaped plate (5) is fixedly mounted on the upper plate surface of the mounting plate (4); a placement plate (6) is fixedly mounted on the upper plate surface of the mounting plate (4); a motor housing body (7) is placed on the upper plate surface of the placement plate (6); two second U-shaped plates (8) are symmetrically and fixedly mounted on the upper plate surface of the hollow plate (1); a blocking device (9) is arranged between the two sides of the inner wall of the first U-shaped plate (5); and a lifting assembly (10) is arranged on the top of the two second U-shaped plates (8).

2. The air tightness detection device for an air conditioner motor housing according to claim 1, characterized in that: The blocking device (9) comprises two bidirectional screw rods (91) symmetrically distributed and rotatably mounted on both sides of the inner wall of the first U-shaped plate (5), one end of each of the two bidirectional screw rods (91) passes through one side of the first U-shaped plate (5), the outer surface of the bidirectional screw rod (91) is symmetrically threaded with two clamping plates (92), the opposite sides of the clamping plates (92) are each provided with a sealing gasket (93), and one side of the first U-shaped plate (5) is provided with a driving mechanism (94).

3. The air tightness detection device for an air conditioner motor housing according to claim 2, characterized in that: The driving mechanism (94) comprises an L-shaped block (941) fixedly mounted on the top of the first U-shaped plate (5); a servo motor (942) is arranged at one end of the L-shaped block (941); a driving gear (943) is fixedly mounted at one end of one of the bidirectional screw rods (91); a driven gear (944) is fixedly mounted at one end of the other bidirectional screw rod (91); a chain (945) is arranged between the driving gear (943) and the driven gear (944); and an output shaft of the servo motor (942) is fixedly connected to one side of the driving gear (943).

4. The air tightness detection device for an air conditioner motor housing according to claim 1, characterized in that: The lifting component (10) is an electric push rod, the telescopic end of the electric push rod passes through the top of the second U-shaped plate (8), and the upper plate surface of the mounting plate (4) is symmetrically distributed and rotatably mounted with two threaded cylinders (11), and the threaded cylinders (11) are threadedly sleeved on the telescopic end of the electric push rod.

5. The air tightness detection device for an air conditioner motor housing according to claim 2, characterized in that: Air pipes (12) are symmetrically connected to the left and right sides of the first U-shaped plate (5), and one end of the air pipe (12) passes through the first U-shaped plate (5), the clamping plate (92) and the sealing gasket (93) in sequence, and extends into the motor housing body (7).

6. The air tightness detection device for an air conditioner motor housing according to claim 1, characterized in that: Two vertical balancing rods (13) are symmetrically inserted at the top of the two second U-shaped plates (8), and the bottom ends of the balancing rods (13) penetrate the tops of the second U-shaped plates (8) and are fixedly connected to the upper plate surface of the mounting plate (4).

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