Gearbox detection device

Abstract

The utility model relates to the technical field of gearboxes, and discloses a gearbox detection device, which comprises a sealed accommodating cavity and bases arranged at four corners of the bottom end of the sealed accommodating cavity, the middle end of the inner wall of the sealed accommodating cavity is fixedly connected with a fixed plate, the lower end of the fixed plate is provided with a vibration assembly, and the upper end of one side of the fixed plate is provided with a through groove in a penetrating manner. A sliding block is arranged at the upper end of the fixing plate; a placement assembly is arranged at the upper end of the sliding block; an inflation assembly is arranged at the bottom end of the sealed containing cavity; a ventilation assembly is arranged at one end of the inflation assembly, a sealing cover covers the upper end of the sealed containing cavity, and a pressure sensor is arranged at the upper end of the inner wall of the sealed containing cavity. According to the utility model, the vibration assembly is arranged to simulate the road condition when an automobile passes through a bumpy road section, the swing assembly is arranged to simulate the driving process of the automobile, and the gearbox air tightness detection result is more in line with the actual condition through simulating the driving process of the automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a gearbox detection device. Background Art

[0002] The gearbox generally refers to the transmission. The transmission is a mechanism used to change the speed and torque from the engine. It can fix or change the transmission ratio of the output shaft and the input shaft in stages. It is also called a gearbox. The transmission consists of a speed transmission mechanism and an operating mechanism. Some cars also have a power output mechanism. Most transmission mechanisms use ordinary gear transmissions, and some use planetary gear transmissions. Ordinary gear transmission speed change mechanisms generally use sliding gears and synchronizers.

[0003] At present, most gearboxes use the water tank leakage method to check the sealing of the gearbox. The gearbox is placed in a water tank filled with water, and whether bubbles are generated and the size of the bubbles are checked to determine whether the gearbox is leaking. However, this method is greatly interfered by subjective factors, and the submerged gearbox is prone to rust and damage to pneumatic components. In addition, most gearbox sealing tests are carried out in a stationary state, which cannot simulate the situation during the driving of the car and the changes in the external environment, resulting in inaccurate test results. Utility Model Content

[0004] In view of the fact that most existing gearbox sealing tests are conducted in a stationary state and cannot simulate the situation during vehicle driving and changes in the external environment, resulting in inaccurate test results, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a gearbox detection device, the purpose of which is to judge the air tightness of the gearbox by periodically pressurizing the inside of a sealed cavity and by measuring whether the pressure inside the cavity changes periodically. Compared with the water tank steam leakage method inspection, the gearbox is not easy to rust and damage, and can simulate various complex road conditions of car driving, so that the detection results are more in line with the actual situation and more accurate.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a gearbox detection device, comprising a sealed cavity and bases arranged at the four corners of the bottom end of the sealed cavity, a fixed plate is fixedly connected to the middle end of the inner wall of the sealed cavity, a vibration component is arranged at the lower end of the fixed plate, a through groove is penetrated through the upper end of one side of the fixed plate, a swing component is arranged on one side of the vibration component, a slider is arranged at the upper end of the fixed plate, a placement component is arranged at the upper end of the slider, an inflatable component is arranged at the bottom end of the sealed cavity, a ventilation component is arranged at one end of the inflatable component, a sealing cover is arranged at the upper end cover of the sealed cavity, and a pressure sensor is arranged at the upper end of the inner wall of the sealed cavity;

[0007] The inflation component includes a pressure cylinder fixedly arranged at the bottom end of the sealed cavity, a piston is inserted into the inner wall of the pressure cylinder, one end of the piston is connected to a plug rod, the outer wall of the plug rod is sleeved with a second spring, the end of the plug rod away from the piston is connected to a striking plate, a knocking rod is arranged on one side of the striking plate, the upper end of the knocking rod is connected to a second motor through a second rotating shaft, the ventilation component includes an inflation rod arranged at the lower end of one side of the pressure cylinder, a first one-way valve is arranged at the middle end of the inflation rod, a deflation rod is arranged at the upper end of one side of the pressure cylinder, and a second one-way valve is arranged at the middle end of the deflation rod.

[0008] As a preferred solution of the gearbox detection device described in the utility model, the vibration assembly includes a first motor fixedly arranged at the lower end of the fixed plate, the output end of the first motor is connected to a first rotating shaft, the end of the first rotating shaft away from the first motor is connected to a disc, the first rotating shaft is connected to the end face away from the axis of the disc, the outer wall of the disc is sleeved with a driving frame, the outer wall of the disc can slide along the inner wall of the driving frame, the outer wall of the disc and the inner wall of the driving frame are fitted together, the upper end face of the driving frame is fixedly connected to a sliding rod, and the outer wall of the sliding rod is slidably connected to the fixed plate, and the upper end of the sliding rod is connected to a support frame.

[0009] As a preferred solution of the gearbox detection device described in the utility model, wherein: the swing assembly includes a short rod rotatably arranged at the center of one end of the disc, the end of the short rod away from the disc is rotatably connected to a long rod, the upper end of the long rod is rotatably connected to a swing rod, the upper end of the swing rod is rotatably connected to a connecting rod, the end of the connecting rod away from the swing rod is hingedly connected to a slider, the middle end of the swing rod is rotatably connected to a through groove, the lower end of the slider can slide along a support frame, and the upper end of the support frame is provided with a sliding groove matching the lower end of the slider.

[0010] As a preferred solution of the gearbox detection device described in the utility model, wherein: the placement component includes a placement bin arranged at the upper end of the slider, two symmetrical groups of clamps are movably inserted into the inner wall of the placement bin, and mutually symmetrical first springs are fixedly arranged at both ends of the inner wall of the placement bin, and the end of the first spring away from the placement bin is fixedly connected to the clamp.

[0011] As a preferred solution of the gearbox detection device described in the utility model, wherein: the piston is movably inserted into the inner wall of the pressure cylinder, the front and rear ends of the second spring are respectively fixedly connected to the piston and the pressure cylinder, the end of the plug rod away from the piston moves through the pressure cylinder, the length from the axis center of the lower end of the second rotating shaft to the front end of the knocking rod is greater than the length from the axis center of the front end of the knocking rod to the axis center of the striking plate, and the outer wall of the front end of the knocking rod can slide along the striking plate.

[0012] As a preferred solution of the gearbox detection device described in the utility model, the first one-way valve allows external gas to enter the pressurized cylinder through the inflation rod, the upper end of the deflation rod passes through the bottom end of the sealed cavity, and the second one-way valve allows the gas in the pressurized cylinder to enter the sealed cavity through the deflation rod.

[0013] As a preferred solution of the gearbox detection device of the utility model, wherein: bolts are threadedly inserted at the four corners of the upper end of the sealing cover, and a threaded hole matching the bolt is opened at the upper end of the sealing cavity.

[0014] Beneficial effects of the utility model:

[0015] 1. By starting the second motor, the second rotating shaft drives the knocking rod to periodically knock the striking plate. When the knocking rod contacts the striking plate, the knocking rod squeezes the striking plate to drive the plug rod to slide toward the inside of the pressurizing cylinder, so that the plug rod drives the piston to push the gas inside the pressurizing cylinder. At this time, the piston stretches the second spring to allow the gas inside the pressurizing cylinder to pass through the second one-way valve and enter the sealed chamber through the deflation rod to pressurize the inside. After the knocking rod rotates away from the striking plate, under the reverse elastic force of the second spring, the piston moves in the opposite direction away from the inflation rod along the inner wall of the pressurizing cylinder. Slide, the external gas passes through the first one-way valve and enters the pressurizing cylinder through the inflation rod. Through the above operation, the inside of the sealed cavity can be pressurized indirectly, and the change value of the internal pressure is recorded by the pressure sensor inside the sealed cavity. If the internal pressure shows periodic changes, it means that the air tightness of the gearbox is intact. If the air pressure inside the sealed cavity does not show periodic changes, it means that there is a leak in the gearbox. In addition, as the external pressure continues to change, the air tightness of the gearbox under different pressure environments can be simulated, making the test results more referenceable.

[0016] 2. By setting the vibration component, the road condition of a car passing through a bumpy road section can be simulated. By setting the swing component, the driving process of the car can be simulated. By simulating the driving process of the car, the gearbox air tightness test result is more in line with the actual situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the gearbox detection device of the utility model.

[0019] Figure 2It is a schematic diagram of the overall front cross-sectional three-dimensional structure of the gearbox detection device of the utility model.

[0020] Figure 3 It is a schematic diagram of the overall top-view cross-sectional three-dimensional structure of the gearbox detection device of the utility model.

[0021] Figure 4 It is a three-dimensional structural schematic diagram of some components of the gearbox detection device of the utility model.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of some components of the gearbox detection device of the utility model.

[0023] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the inflation component of the gearbox detection device of the utility model.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the placement component of the gearbox detection device of the utility model.

[0025] Description of reference numerals:

[0026] Sealed cavity; 2. Base; 3. Fixed plate; 4. Vibration assembly; 41. First motor; 42. First rotating shaft; 43. Disc; 44. Drive frame; 45. Slide rod; 46. Support frame; 5. Through slot; 6. Swing assembly; 61. Short rod; 62. Long rod; 63. Swing rod; 64. Connecting rod; 7. Slider; 8. Placement assembly; 81. Placement bin; 82. Clamp; 83. First spring; 9. Inflating assembly; 91. Pressurizing cylinder; 92. Piston; 93. Plug rod; 94. Second spring; 95. Striking disk; 96. Knocking rod; 97. Second rotating shaft; 98. Second motor; 10. Ventilation assembly; 101. Inflating rod; 102. First one-way valve; 103. Deflation rod; 104. Second one-way valve; 11. Sealing cover; 12. Bolt; 13. Threaded hole; 14. Pressure sensor. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Reference Figure 1-7, which is the first embodiment of the utility model, provides a gearbox detection device, including a sealed chamber 1 and a base 2 arranged at the four corners of the bottom end of the sealed chamber 1, a fixed plate 3 is fixedly connected to the middle end of the inner wall of the sealed chamber 1, a vibration component 4 is arranged at the lower end of the fixed plate 3, a through groove 5 is penetrated through the upper end of one side of the fixed plate 3, a swing component 6 is arranged on one side of the vibration component 4, a slider 7 is arranged at the upper end of the fixed plate 3, a placement component 8 is arranged at the upper end of the slider 7, an inflation component 9 is arranged at the bottom end of the sealed chamber 1, a ventilation component 10 is arranged at one end of the inflation component 9, a sealing cover 11 is arranged on the upper end cover of the sealed chamber 1, and a pressure sensor 14 is arranged at the upper end of the inner wall of the sealed chamber 1;

[0030] The inflation component 9 includes a pressure cylinder 91 fixedly arranged at the bottom end of the sealed chamber 1, a piston 92 is inserted into the inner wall of the pressure cylinder 91, one end of the piston 92 is connected to a plug rod 93, the outer wall of the plug rod 93 is sleeved with a second spring 94, the end of the plug rod 93 away from the piston 92 is connected to a striking plate 95, a side of the striking plate 95 is provided with a knocking rod 96, the upper end of the knocking rod 96 is connected to a second motor 98 through a second rotating shaft 97, the ventilation component 10 includes an inflation rod 101 arranged at the lower end of one side of the pressure cylinder 91, a first one-way valve 102 is arranged at the middle end of the inflation rod 101, a deflation rod 103 is arranged at the upper end of one side of the pressure cylinder 91, and a second one-way valve 104 is arranged at the middle end of the deflation rod 103.

[0031] The piston 92 is movably inserted in the inner wall of the pressure cylinder 91, and the front and rear ends of the second spring 94 are fixedly connected to the piston 92 and the pressure cylinder 91 respectively. The end of the plug rod 93 away from the piston 92 can move through the pressure cylinder 91. The length from the axis of the lower end of the second rotating shaft 97 to the front end of the knocking rod 96 is greater than the length from the axis of the front end of the knocking rod 96 to the axis of the striking plate 95. The outer wall of the front end of the knocking rod 96 can slide along the striking plate 95.

[0032] The first one-way valve 102 allows external gas to enter the pressurized cylinder 91 through the inflation rod 101, and the upper end of the deflation rod 103 passes through the bottom end of the sealed cavity 1. The second one-way valve 104 allows the gas in the pressurized cylinder 91 to enter the sealed cavity 1 through the deflation rod 103.

[0033] Fill the gearbox with gas, place the gearbox to be tested in the sealed chamber 1, seal the whole with the sealing cover 11, then start the second motor 98, drive the knocking rod 96 to periodically knock the striking plate 95 through the second rotating shaft 97, the knocking rod 96 is set in a cam shape, when the knocking rod 96 contacts the striking plate 95, the knocking rod 96 squeezes the striking plate 95 to drive the plug rod 93 to slide toward the inside of the pressurizing cylinder 91, so that the plug rod 93 drives the piston 92 to push the gas inside the pressurizing cylinder 91, at this time, the piston 92 stretches the second spring 94, the gas inside the pressurizing cylinder 91 passes through the second one-way valve 104, and enters the sealed chamber 1 through the deflation rod 103 to pressurize the inside, when the knocking rod 96 rotates away from the striking plate 9 After that, under the reverse elastic force of the second spring 94, the piston 92 slides along the inner wall of the pressurizing cylinder 91 in the opposite direction away from the inflation rod 101, and the external gas passes through the first one-way valve 102 and enters the pressurizing cylinder 91 through the inflation rod 101. Through the above operation, the inside of the sealed chamber 1 can be pressurized indirectly, and the change value of the internal pressure is recorded by the pressure sensor 14 inside the sealed chamber 1. If the internal pressure shows periodic changes, it means that the air tightness of the gearbox is intact. If the air pressure inside the sealed chamber 1 does not show periodic changes, it means that there is air leakage in the gearbox. In addition, as the external pressure continues to change, the air tightness of the gearbox under different pressure environments can be simulated, making the detection result more referenceable.

[0034] Reference Figure 1-5 The vibration assembly 4 includes a first motor 41 fixedly arranged at the lower end of the fixed plate 3, the output end of the first motor 41 is connected to a first shaft 42, the end of the first shaft 42 away from the first motor 41 is connected to a disk 43, the first shaft 42 is connected to an end face away from the axis of the disk 43, the outer wall of the disk 43 is sleeved with a driving frame 44, the outer wall of the disk 43 can slide along the inner wall of the driving frame 44, the outer wall of the disk 43 and the inner wall of the driving frame 44 are fitted, the upper end face of the driving frame 44 is fixedly connected to a sliding rod 45, and the outer wall of the sliding rod 45 is slidably connected to the fixed plate 3, and the upper end of the sliding rod 45 is connected to a supporting frame 46;

[0035] The swing assembly 6 includes a short rod 61 rotatably arranged at the center of one end of the disc 43, the end of the short rod 61 away from the disc 43 is rotatably connected to a long rod 62, the upper end of the long rod 62 is rotatably connected to a swing rod 63, the upper end of the swing rod 63 is rotatably connected to a connecting rod 64, the end of the connecting rod 64 away from the swing rod 63 is hingedly connected to a slider 7, the middle end of the swing rod 63 is rotatably connected to the through groove 5, the lower end of the slider 7 can slide along the support frame 46, and the upper end of the support frame 46 is provided with a sliding groove that matches the lower end of the slider 7.

[0036] The placement component 8 includes a placement bin 81 arranged at the upper end of the slider 7, and two symmetrical groups of clamps 82 are movably inserted into the inner wall of the placement bin 81. Mutually symmetrical first springs 83 are fixedly arranged at both ends of the inner wall of the placement bin 81, and one end of the first spring 83 away from the placement bin 81 is fixedly connected to the clamp 82.

[0037] Bolts 12 are threadedly inserted at the four corners of the upper end of the sealing cover 11 , and threaded holes 13 matching with the bolts 12 are provided at the upper end of the sealing chamber 1 .

[0038] The gearbox to be tested is placed on the upper end of the placement bin 81, and the clamping plates 82 are pushed to both sides to compress the first spring 83, and then the clamping plates 82 are released. The clamping plates 82 can fix the gearbox in the placement bin 81 to prevent the gearbox from shaking drastically and touching the sealed cavity 1 during the testing process, causing damage. In the process of continuously pressurizing the inside of the sealed cavity 1 through Example 1, the first motor 41 can be started to drive the first rotating shaft 42 to rotate, and the first rotating shaft 42 drives the disc 43 to rotate, and the disc 43 slides along the driving frame 44. Since the first rotating shaft 42 is connected to the end face away from the axis of the disc 43, during the rotation of the disc 43, the driving frame 44 vibrates up and down, and the driving frame 44 drives the sliding rod 45 to slide up and down along the fixed plate 3, so that the support frame 46 vibrates up and down, and the gearbox in the placement bin 81 vibrates up and down with the support frame 46, which can simulate the car passing through a bumpy road section. The road condition is used to detect whether its air tightness has changed. In addition, when the disc 43 rotates, the short rod 61 is driven to rotate with the disc 43 as the axis, thereby driving the end of the long rod 62 and the short rod 61 in contact to rotate with the disc 43 as the axis. Since the long rod 62 is rotatably connected to the swing rod 63, the middle end of the swing rod 63 is rotatably connected to the through groove 5, so that the middle end of the swing rod 63 swings periodically left and right along the through groove 5. Since the swing rod 63 is rotatably connected to the connecting rod 64, the connecting rod 64 and the slider 7 are hinged, so that the connecting rod 64 is driven by the swing rod 63 to make the slider 7 slide back and forth along the support frame 46, so that the gearbox in the storage bin 81 moves back and forth with the slider 7, which can simulate the scene of the car moving forward and backward, and cooperate with the air tightness detection in Example 1 to judge the air tightness of the car during driving, so that the detection result is more in line with the actual situation and the detection result is more accurate.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A gearbox detection device, comprising a sealed chamber (1) and bases (2) arranged at four corners of the bottom end of the sealed chamber (1), characterized in that: A fixing plate (3) is fixedly connected to the middle end of the inner wall of the sealed cavity (1), a vibration component (4) is arranged at the lower end of the fixing plate (3), a through groove (5) is penetrated through the upper end of one side of the fixing plate (3), a swing component (6) is arranged on one side of the vibration component (4), a slider (7) is arranged at the upper end of the fixing plate (3), a placement component (8) is arranged at the upper end of the slider (7), an inflation component (9) is arranged at the bottom end of the sealed cavity (1), a ventilation component (10) is arranged at one end of the inflation component (9), a sealing cover (11) is arranged at the upper end cover of the sealed cavity (1), and a pressure sensor (14) is arranged at the upper end of the inner wall of the sealed cavity (1); The inflation component (9) comprises a pressure cylinder (91) fixedly arranged at the bottom end of the sealed cavity (1), a piston (92) is inserted into the inner wall of the pressure cylinder (91), one end of the piston (92) is connected to a plug rod (93), the outer wall of the plug rod (93) is sleeved with a second spring (94), the end of the plug rod (93) away from the piston (92) is connected to a striking plate (95), a knocking rod (96) is arranged on one side of the striking plate (95), and the upper end of the knocking rod (96) is connected to a second motor (98) via a second rotating shaft (97), and the ventilation component (10) comprises an inflation rod (101) arranged at the lower end of one side of the pressure cylinder (91), a first one-way valve (102) is arranged at the middle end of the inflation rod (101), a deflation rod (103) is arranged at the upper end of one side of the pressure cylinder (91), and a second one-way valve (104) is arranged at the middle end of the deflation rod (103).

2. The gearbox detection device according to claim 1, characterized in that: The vibration assembly (4) comprises a first motor (41) fixedly arranged at the lower end of the fixed plate (3); the output end of the first motor (41) is connected to a first rotating shaft (42); an end of the first rotating shaft (42) away from the first motor (41) is connected to a disk (43); the first rotating shaft (42) is connected to an end face away from the axis of the disk (43); the outer wall of the disk (43) is sleeved with a driving frame (44); the outer wall of the disk (43) can slide along the inner wall of the driving frame (44); the outer wall of the disk (43) and the inner wall of the driving frame (44) are in contact with each other; the upper end face of the driving frame (44) is fixedly connected to a sliding rod (45); the outer wall of the sliding rod (45) is slidably connected to the fixed plate (3); and the upper end of the sliding rod (45) is connected to a supporting frame (46).

3. The gearbox detection device according to claim 2, characterized in that: The swing assembly (6) comprises a short rod (61) rotatably arranged at the center of one end of the disc (43); the end of the short rod (61) away from the disc (43) is rotatably connected to a long rod (62); the upper end of the long rod (62) is rotatably connected to a swing rod (63); the upper end of the swing rod (63) is rotatably connected to a connecting rod (64); the end of the connecting rod (64) away from the swing rod (63) is hingedly connected to a slider (7); the middle end of the swing rod (63) is rotatably connected to the through groove (5); the lower end of the slider (7) can slide along the support frame (46); the upper end of the support frame (46) is provided with a sliding groove that matches the lower end of the slider (7).

4. The gearbox detection device according to claim 3, characterized in that: The placement assembly (8) comprises a placement bin (81) arranged at the upper end of the slider (7); two groups of symmetrical clamping plates (82) are movably inserted into the inner wall of the placement bin (81); mutually symmetrical first springs (83) are fixedly arranged at both ends of the inner wall of the placement bin (81); and one end of the first spring (83) away from the placement bin (81) is fixedly connected to the clamping plate (82).

5. The gearbox detection device according to claim 1, characterized in that: The piston (92) is movably inserted into the inner wall of the pressure cylinder (91); the front and rear ends of the second spring (94) are fixedly connected to the piston (92) and the pressure cylinder (91) respectively; the end of the plug rod (93) away from the piston (92) movably passes through the pressure cylinder (91); the length from the axis of the lower end of the second rotating shaft (97) to the front end of the knocking rod (96) is greater than the length from the axis of the front end of the knocking rod (96) to the axis of the striking plate (95); and the outer wall of the front end of the knocking rod (96) can slide along the striking plate (95).

6. The gearbox detection device according to claim 1, characterized in that: The first one-way valve (102) allows external gas to enter the pressurized cylinder (91) through the inflation rod (101), the upper end of the deflation rod (103) passes through the bottom end of the sealed cavity (1), and the second one-way valve (104) allows the gas in the pressurized cylinder (91) to enter the sealed cavity (1) through the deflation rod (103).

7. The gearbox detection device according to claim 1, characterized in that: Bolts (12) are threadedly inserted into the four corners of the upper end of the sealing cover (11), and threaded holes (13) matching the bolts (12) are provided at the upper end of the sealing cavity (1).

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