An automatic oiling device

Abstract

The application relates to an automatic oiling device which comprises a rack, a driving mechanism and a clamp for accommodating a gear box, the driving mechanism is rotationally connected with a feeding disc and a working disc which are installed on the rack, a detection mechanism for detecting the air tightness of the gear box and an oiling mechanism for oiling the gear box are connected with the rack in the circumferential direction of the working disc, the feeding disc is provided with a plurality of sliding grooves, the working disc is provided with a plurality of positioning grooves matched with the sliding grooves, the driving mechanism controls the intermittent rotation of the feeding disc and the working disc, the feeding disc is provided with a feeding mechanism for pushing the clamp of the sliding groove to the positioning groove, the driving mechanism drives the feeding disc and the working disc to rotate simultaneously so that the clamp enters the next working position, and the feeding mechanism, the detection mechanism and the oiling mechanism work on the gear box in the respective working positions. The two working states of the application are cyclically repeated, so that the automatic feeding, detection and oiling of the gear box are realized, manual operation is replaced, and a large amount of manpower cost is saved.

Description

Technical Field

[0001] This application relates to the field of gearbox lubrication, and more particularly to an automatic lubrication device. Background Technology

[0002] After the transmission gears and gearbox are assembled, lubricating oil needs to be added to the gearbox to lubricate the gears, bearings, and other mechanical parts, reducing wear and friction and extending the gearbox's service life. In addition, proper lubrication can also reduce noise and vibration and improve transmission efficiency. However, the gearbox needs to undergo an airtightness test to avoid the risk of oil leakage after lubrication.

[0003] Existing semi-automatic equipment for airtightness testing and lubrication of gearboxes requires manual handling of the gearboxes onto the turntable. During this process, manual operation is prone to errors, which can easily cause damage to the gearboxes. In addition, the gearboxes themselves are heavy, which can pose a safety hazard. Manual loading requires a lot of time and manpower, so it is not suitable for high-volume production lines. Summary of the Invention

[0004] To improve the feeding efficiency of automatic lubrication of gearboxes, this application provides an automatic lubrication device.

[0005] The automatic refueling device provided in this application adopts the following technical solution:

[0006] An automatic refueling device includes a frame, a drive mechanism, and a fixture for housing a gearbox. The drive mechanism, mounted on the frame, is rotatably connected to a feeding tray and a working tray. The frame around the working tray is connected to a detection mechanism for testing the airtightness of the gearbox and a refueling mechanism for refueling the gearbox. The feeding tray has several sliding grooves, and the working tray has several positioning grooves that cooperate with the sliding grooves. The drive mechanism controls the feeding tray and the working tray to rotate intermittently. The feeding tray has a feeding mechanism, which is set towards the working tray, for pushing the fixture in the sliding groove to the positioning groove. The feeding mechanism and the drive mechanism cooperate to form at least two working states: State 1: The drive mechanism drives the feeding tray and the working tray to rotate simultaneously, so that the fixture enters the next working position; State 2: The feeding mechanism, the detection mechanism, and the refueling mechanism perform operations on the gearbox at their respective workstations.

[0007] By adopting the above technical solution, the fixture is used to protect the gearbox. Throughout the entire feeding, inspection, and lubrication process, the gearbox moves under the protection of the fixture, thereby reducing the risk of gearbox collisions. Multiple fixtures with built-in gearboxes can be located at multiple workstations simultaneously to perform different operations. The fixtures with gearboxes can be transported to the feeding tray via a chain conveyor or belt conveyor. The fixture is rotated by the feeding tray towards the working tray, and the fixture is pushed into the working tray by the feeding mechanism to complete feeding and positioning. In this working condition, the gearbox located below the inspection mechanism performs airtightness testing, and the gearbox located below the lubrication mechanism performs lubrication operations, greatly improving work efficiency. At this time, the working tray and the feeding tray are in a stationary state, ensuring the working stability of each mechanism. After the gearbox completes its work at each workstation, the drive mechanism drives the feeding tray and the working tray to rotate, allowing all gearboxes to advance one workstation. The two working states are repeated, thereby realizing automatic feeding, inspection, and lubrication of gearboxes, replacing manual operation and saving a lot of labor costs.

[0008] Optionally, the drive mechanism includes a drive assembly and a transmission assembly. The transmission assembly includes a ratchet, a first pawl, and a first spring. The drive assembly includes a rocker arm, a working disc, and a ratchet fixedly connected. One end of the rocker arm is rotatably connected to the frame, and the other end is a free end. One end of the first pawl is rotatably connected to the rocker arm, and the other end abuts against the circumference of the ratchet. One end of the first spring is fixedly connected to the first pawl, and the other end is fixedly connected to the rocker arm. The rotation axis of the working disc, the rotation axis of the ratchet, and the rotation axis of the rocker arm are coaxial.

[0009] By adopting the above technical solution, the operator controls the intermittent rotation of the working disc by reciprocating the swing arm, which in turn controls the ratchet to move intermittently through the first pawl. The drive mechanism has a compact structure and high transmission accuracy, which enables the gearbox on the working disc to accurately correspond with the detection mechanism and / or lubrication mechanism.

[0010] Optionally, the transmission assembly also includes a drive gear and a driven gear. The drive gear is coaxially and fixedly connected to the working disc, and the driven gear is coaxially and fixedly connected to the feeding disc. The drive gear and the driven gear mesh.

[0011] By adopting the above technical solution, when the ratchet rotates, the ratchet drives the feeding plate to rotate together through the driving gear and the driven gear, and the rotation angle is the same, so that the positioning groove and the sliding groove can correspond, reducing the risk of misalignment between the positioning groove and the sliding groove, and allowing the feeding mechanism to push the fixture containing the gearbox into the positioning groove.

[0012] Optionally, the drive assembly also includes a first motor, a first crank, and a first connecting rod. The first motor is mounted on the frame. One end of the first crank is fixedly connected to the output shaft of the first motor, and the other end is rotatably connected to the first connecting rod. The end of the first connecting rod away from the first crank is rotatably connected to the rocker arm.

[0013] By adopting the above technical solution, the first motor rotates continuously, driving the rocker arm to swing back and forth through the first crank and the first connecting rod, thereby realizing the automatic intermittent motion of the ratchet. The drive mechanism is simple in structure, easy to manufacture, and has good stability, enabling the ratchet to rotate safely and reliably.

[0014] Optionally, the feeding mechanism includes a turntable, a second crank, a second connecting rod, and a slider. The turntable is rotatably connected to the frame, the second crank is fixedly connected to the turntable, the second connecting rod is rotatably connected to the slider, and the slider is slidably connected to the sliding groove.

[0015] By adopting the above technical solution, when the sliding groove corresponds to the positioning groove, the operator rotates the turntable, and the turntable slides along the sliding groove direction through the second crank and the second connecting rod, pushing the fixture with the gearbox into the positioning groove of the working plate. The feeding mechanism is compact and can avoid affecting other structures when transferring the fixture.

[0016] Optionally, the frame is connected to an opening and closing mechanism, which includes an opening and closing element and a second motor. The output shaft of the second motor, mounted on the frame, is fixedly connected to one end of the opening and closing element. The opening and closing element is slidably connected to a limit block. The frame is connected to a stop block with a wedge-shaped end, which is located on the rotation trajectory of the limit block. The turntable is provided with several locking grooves in its circumference. The limit block is connected to the locking grooves to drive the turntable to rotate. The opening and closing element is provided with a third spring. One end of the third spring is fixedly connected to the opening and closing element, and the other end is fixedly connected to the limit block. The stop block and the third spring cooperate to force the limit block to move toward or away from the turntable.

[0017] By adopting the above technical solution, the second motor drives the starter and stop components to rotate continuously. The limit block engages with the locking groove of the turntable, and the turntable rotates. The slider can automatically make a reciprocating motion to push the fixture into the working plate. The limit block moves along the wedge-shaped surface of the stop block, causing the limit block to disengage from the turntable, at which point the turntable is in a stationary state. When the limit block engages with the locking groove again, the turntable drives the slider to slide again, realizing the intermittent reciprocating sliding of the slider. The intermittent movement of the slider, combined with the intermittent movement of the loading plate, realizes the automatic intermittent feeding of the gearbox, greatly improving the working efficiency.

[0018] Optionally, the number of teeth on the ratchet, the number of sliding grooves, and the number of positioning grooves correspond one-to-one.

[0019] By adopting the above technical solution, each rotation of the ratchet by one tooth corresponds to a positioning groove and a sliding groove, allowing the feeding mechanism to push the clamp of the sliding groove into the positioning groove. This also ensures that the bottom of the detection mechanism and the lubrication mechanism always has a gearbox, which improves work efficiency and avoids damage caused by the equipment being idle.

[0020] Optionally, a groove is provided at the bottom of the sliding groove, and a positioning element and a fourth spring are provided in the groove. One end of the fourth spring is fixedly connected to the positioning element, and the other end is fixedly connected to the groove. The positioning element is slidably connected to the groove. The positioning element includes a first limiting part and a second limiting part. The opposite sides of the first limiting part and the second limiting part are both inclined towards the feeding tray.

[0021] By adopting the above technical solution, when the fixture is located in the sliding groove, the positioning member can restrict the movement of the fixture, thereby preventing the fixture from detaching from the loading plate when the loading plate rotates; during the process of the slider pushing the fixture, the slider forces the positioning member to descend along the inclined surface of the first limiting part, and after the positioning member detaches from the fixture, it enters the working plate with the slider.

[0022] Optionally, the frame is rotatably connected to a second pawl, which abuts against the ratchet in the circumferential direction. The second pawl is connected to a second spring, one end of which is fixedly connected to the frame and the other end of which is fixedly connected to the second pawl.

[0023] By adopting the above technical solution, the second pawl, under the action of the elastic potential energy of the second spring, always abuts against the surface of the ratchet, so as to further restrict the ratchet and reduce the risk of the ratchet disengaging.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The clamp is used to protect the gearbox. Throughout the entire process of loading, inspection and lubrication, the gearbox moves under the protection of the clamp, thereby reducing the risk of the gearbox being bumped or knocked.

[0026] 2. Multiple fixtures with built-in gearboxes can be located at multiple workstations simultaneously to perform different operations. The fixture located on the feeding tray is pushed into the working tray by the feeding mechanism to complete feeding and positioning. At the same time, the gearbox located below the detection mechanism performs air tightness testing, and the gearbox located below the lubrication mechanism performs lubrication operations, which greatly improves work efficiency. At this time, the working tray and the feeding tray are in a stationary state, ensuring the working stability of each mechanism.

[0027] 3. After the gearbox completes its work at each station, the drive mechanism drives the feeding tray and the working tray to rotate, allowing all gearboxes to advance one station. The two working states cycle repeatedly, thereby realizing automatic feeding, inspection and lubrication of the gearboxes, replacing manual operation and saving a lot of labor costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an automatic refueling device according to this application.

[0029] Figure 2 This is a cross-sectional structural schematic diagram of an automatic refueling device according to this application.

[0030] Figure 3 This is a schematic diagram of the fixture mechanism in this application.

[0031] Figure 4 This is a structural diagram of the feeding tray and working tray of this application.

[0032] Figure 5 This is a cross-sectional structural diagram of the feeding mechanism of this application.

[0033] Figure 6 This is a schematic diagram of the feeding mechanism in this application.

[0034] Figure 7 This is a schematic diagram of the internal structure of an automatic refueling device according to this application.

[0035] Figure 8 This is a schematic diagram of the drive mechanism of this application.

[0036] Figure 9 yes Figure 5 The enlarged view of part A in the middle is mainly used to show the structure of the positioning component of this application.

[0037] Figure 10 yes Figure 5 The enlarged view of section B is mainly used to show the structure of the starting and stopping mechanism of this application.

[0038] Figure 11 This is a structural diagram of the testing and refueling facilities.

[0039] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Ball bearing; 2. Fixture; 21. Base plate; 22. Support plate; 23. First limiting plate; 24. Second limiting plate; 26. Groove; 3. Drive mechanism; 31. Drive assembly; 311. First motor; 312. First crank; 313. First connecting rod; 314. Rocker arm; 32. Transmission assembly; 321. Ratchet; 322. Drive gear; 323. Driven gear; 324. First pawl; 325. Second pawl; 326. First spring; 327. Second spring; 33. Transmission gear; 4. Detection mechanism; 41. First cylinder; 42. Second cylinder; 43. Differential pressure tester; 5. Oiling mechanism; 51. Third cylinder; 52. Oil feeder; 6. Feeding tray; 61. Sliding groove; 62. Annular groove; 63. Positioning component; 631. First limiting part; 632. Second limiting part; 633. First guide surface; 634. Second guide surface; 64. Limiting groove; 65. Fourth spring; 7. Working tray; 71. Positioning groove; 8. Feeding mechanism; 81. Turntable; 811. Snap-fit ​​groove; 82. Second crank; 83. Second connecting rod; 84. Slider; 9. Starting and stopping mechanism; 91. Third spring; 92. Starting and stopping component; 93. Second motor; 94. Limiting block; 941. Snap-fit ​​part; 942. Guide part; 95. Stop block; 101. Gearbox; 102. Conveyor belt. Detailed Implementation

[0040] The present application will be further described in detail below with reference to the accompanying drawings.

[0041] This application discloses an automatic refueling device.

[0042] Reference Figure 1 and Figure 2 The automatic refueling device includes a clamp 2, a frame 1, and a drive mechanism 3, a detection mechanism 4, and a refueling mechanism 5, all mounted on the frame 1. The clamp 2 has a built-in gearbox 101 for protection. The drive mechanism 3 is connected to a feeding tray 6 and a working tray 7, and simultaneously drives both the feeding tray 6 and the working tray 7 to rotate intermittently. The feeding tray 6 is equipped with a feeding mechanism 8 for pushing the clamp 2 located on the feeding tray 6 into the working tray 7 for positioning. A conveyor belt 102 is located on the side of the feeding tray 6 opposite to the working tray 7, which transports the clamps 2 containing the gearbox 101 one by one into the sliding groove 61.

[0043] The testing mechanism 4 and the lubrication mechanism 5 are sequentially installed on the frame 1 along the rotation direction of the working disc 7. The testing mechanism 4 performs an airtightness test on the gearbox 101 inside the fixture 2. After the next intermittent movement, the lubrication mechanism 5 lubricates the gearbox 101 that has passed the test. It is worth noting that the airtightness test of the gearbox 101, which is already equipped with the transmission gear 33 (not shown in the figure), is to test the airtightness of the gearbox 101 and the transmission gear 33 after assembly.

[0044] Reference Figure 3 and Figure 4 The clamp 2 includes a base plate 21 and a support plate 22. The ends of the base plate 21 and the support plate 22 are fixedly connected to each other, forming an "L" shape. The base plate 21 is rotatably connected to a first limiting plate 23 and a second limiting plate 24. The first limiting plate 23 and the second limiting plate 24 are located on opposite sides of the support plate 22, forming a cubic structure for housing the gearbox 101. The first limiting plate 23 and the second limiting plate 24 are flipped upwards, and both the first limiting plate 23 and the second limiting plate 24 are fixedly connected to the support plate 22 with pins.

[0045] Reference Figure 5 and Figure 6 The drive mechanism 3 includes a drive assembly 31 and a transmission assembly 32. The drive assembly 31 includes a first motor 311, a first crank 312, a first connecting rod 313, and a rocker arm 314. The housing of the first motor 311 is fixedly connected to the frame 1, and the output shaft of the first motor 311 is fixedly connected to the end of the first crank 312. One end of the first connecting rod 313 is rotatably connected to the end of the first crank 312 away from the first motor 311, and the other end is rotatably connected to the end of the rocker arm 314. The rocker arm 314 is rotatably connected to the frame 1, and the transmission assembly 32 is rotatably connected to the rocker arm 314.

[0046] Reference Figure 7 and Figure 8 The transmission assembly 32 includes a ratchet 321, a driving gear 322, and a driven gear 323. The feeding disc 6, driving gear 322, and ratchet 321 are fixedly connected in sequence from high to low. The rotation shaft of ratchet 321 is rotatably connected to a support rod. The rotation axis of the feeding disc 6, the rotation axis of the driving gear 322, and the rotation axis of ratchet 321 are coaxial. The rotation of ratchet 321 drives the driving gear 322 and the feeding disc 6 to rotate, and the driving gear 322 and the feeding disc 6 rotate at the same angle. One end of the rotation shaft of the driven gear 323 is rotatably connected to the frame 1, and the other end is fixedly connected to the working disc 7. The rotation axis of the working disc 7 is coaxial with the rotation axis of the driven gear 323, and the driven gear 323 and the working disc 7 rotate at the same angle.

[0047] In this embodiment, a plurality of transmission gears 33 are rotatably connected to the frame 1, and the rotation shafts of the plurality of transmission gears 33 are all rotatably connected to the frame 1. The driving gear 322 meshes with the driven gear 323 through the plurality of transmission gears 33, thereby reducing the diameter of the driving gear 322 and the driven gear 323, and improving the stability and efficiency of the transmission. In this embodiment, the number of transmission gears 33 is one.

[0048] Reference Figure 8The lever 314 is equipped with a first pawl 324, one end of which is rotatably connected to the lever 314, and the other end abuts against the circumference of the ratchet 321, for driving the rotation of the ratchet 321. The frame 1 is equipped with a second pawl 325, one end of which is rotatably connected to the frame 1, and the other end abuts against the circumference of the ratchet 321. The ratchet 321 is equipped with a plurality of first springs 326 and second springs 327. One end of the first spring 326 is fixedly connected to the lever 314, and the other end is fixedly connected to the middle position of the first pawl 324; one end of the second spring 327 is fixedly connected to the frame 1, and the other end is fixedly connected to the middle position of the second pawl 325. The first springs 326 and the second springs 327 ensure that the first pawl 324 and the second pawl 325 can always be in circumferential contact with the ratchet 321. The first pawl 324 and the second pawl 325 are symmetrically distributed around the center of the ratchet 321. The second pawl 325 cooperates with the first pawl 324 to brake the ratchet 321 and reduce the risk of slippage between the ratchet 321 and the pawl. In this embodiment, the ratchet 321 and pawl are engaged in a single layer. In other embodiments, the ratchet 321 and pawl can be engaged in multiple layers to enhance the engagement strength.

[0049] Reference Figure 9 and Figure 10 The feeding mechanism 8 includes a turntable 81, a second crank 82, a second connecting rod 83, and a slider 84. The turntable 81 is rotatably connected to the frame 1 via a damping gear, and the rotation axis of the turntable 81 is coaxial with the rotation axis of the feeding plate 6. One end of the second crank 82 is fixedly connected to the rotation center of the turntable 81, and the other end is rotatably connected to one end of the second connecting rod 83. One end of the second connecting rod is rotatably connected to the slider 84.

[0050] The frame 1 is equipped with an opening and stopping mechanism 9, which includes an opening and stopping element 92 and a second motor 93. The housing of the second motor 93 is fixedly connected to the frame 1, and the output shaft of the second motor 93 is fixedly connected to one end of the opening and stopping element 92. The other end of the opening and stopping element 92 is a free end. A limiting block 94 is slidably connected inside the opening and stopping element 92. The limiting block 94 slides toward or away from the rotation center of the opening and stopping element 92. The limiting block 94 is provided with a locking part 941 facing the turntable 81. The turntable 81 is provided with locking grooves 811 for the locking part 941 to connect to in the circumference. In this embodiment, there are two locking grooves 811, and the two locking grooves 811 are distributed at 180°. The limiting block 94 is provided with a guide part 942, which is vertically arranged and protrudes from the opening and stopping element 92. The opening and stopping element 92 has space for the guide part 942 and the locking part 941 to slide. A stop 95 is fixedly connected to the top of the inner wall of the housing. The end of the stop 95 is wedge-shaped. The stop 95 is located on the rotation trajectory of the guide part 942 and is used to guide the limit block 94 to approach or move away from the turntable 81.

[0051] The start / stop member 92 is equipped with a third spring 91. One end of the third spring 91 is fixedly connected to the inner wall of the start / stop member 92, and the other end is fixedly connected to the limiting block 94. The third spring 91 forces the limiting block 94 to have a tendency to move circumferentially towards the turntable 81. When the engaging part 941 abuts against the engaging groove 811, the start / stop member 92 can drive the turntable 81 to rotate, thereby driving the slider 84 to perform a reciprocating motion. Subsequently, the guide part 942 moves along the wedge-shaped surface of the stop block 95, causing the engaging part 941 to disengage from the engaging groove 811. The guide part 942 continues to rotate, while the turntable 81 remains stationary under the action of the damping bearing, thereby realizing the intermittent motion of the slider 84.

[0052] The top of the feeding tray 6 is provided with eight sets of sliding grooves 61, which are centrally arrayed on the top of the feeding tray 6. The sliding grooves 61 are connected to annular grooves 62 near the feeding mechanism 8. The central axis of the annular grooves 62 is coaxial with the central axis of the feeding tray 6. The sliding grooves 61 are open at their circumferential ends near the feeding tray 6. Both the slider 84 and the clamp 2 are slidably connected to the feeding tray 6 via the sliding grooves 61, and the slider 84 is positioned towards the working tray 7 to push the clamp 2 into the working tray 7. When the turntable 81 rotates, the slider 84 is located within the annular groove 62, thus ensuring that the slider 84 always faces the working tray 7.

[0053] Each sliding groove 61 is provided with a positioning element 63. The positioning element 63 slides and connects with the feeding tray 6 in the vertical direction. The positioning element 63 protrudes from the sliding groove 61 and is used to limit the clamp 2. In this embodiment, the positioning element 63 includes a first limiting part 631 and a second limiting part 632. The first limiting part 631 and the second limiting part 632 are fixedly arranged to form a "U" shape. The first limiting part 631 and the second limiting part 632 are arranged along the length of the slide, and the first limiting part 631 is close to the feeding mechanism 8. The bottom of the sliding groove 61 is provided with a limiting groove 64. The first limiting part 631 and the second limiting part 632 are both slidably connected to the limiting groove 64 in the vertical direction. The first limiting part 631 is provided with a first guide surface 633, which is inclined towards the feeding mechanism 8. The second limiting part 632 is provided with a second guide surface 634, which is inclined towards the working tray 7. A fourth spring 65 is provided inside the sliding groove 61. One end of the fourth spring 65 is fixedly connected to the sliding groove 61, and the other end is fixedly connected to the positioning member 63. The fourth spring 65 is used to support the positioning member 63, so that the first guide surface 633 and the second guide surface 634 protrude from the sliding groove 61.

[0054] The bottom of the clamp 2 is provided with a groove 26 that mates with the first limiting part 631. When the clamp 2 is fed into the sliding groove 61 by the conveyor belt, the clamp 2 forces the positioning member 63 to sink along the second guide surface 634. The first limiting part 631 aligns with the groove 26, and the positioning member 63 rises under the action of the fourth spring 65. The first limiting part 631 abuts against the groove 26, and the second limiting part 632 abuts against the outer wall of the clamp 2. The clamping action of the first limiting part 631 and the second limiting part 632 serves to hold the clamp 2, preventing the clamp 2 from detaching from the feeding tray 6 when it rotates. During the sliding motion of the slider 84, which pushes the clamp 2, the slider 84 forces the positioning member 63 to descend along the first guide surface 633, allowing the clamp 2 to slide freely.

[0055] Reference Figure 4 The working disc 7 is provided with eight sets of positioning grooves 71, which are arranged in a central array on the top of the feeding disc 6. The sliding grooves 61 of each positioning groove 71 correspond one-to-one, allowing the feeding mechanism 8 to push the clamp 2 into the positioning groove 71. When the clamp 2 is located in the positioning groove 71, its circumference abuts against the inner wall of the positioning groove 71, thus restricting and positioning the clamp 2. The clamp 2 rotates with the working disc 7, thereby cooperating with the detection mechanism 4 to perform airtightness testing on the gearbox 101 inside the clamp 2, and with the lubrication mechanism 5 to lubricate the gearbox 101.

[0056] The bottoms of the working disc 7 and the feeding disc 6 are both in contact with the frame 1 via ball bearings 11. The frame 1 can support the working disc 7 and the feeding disc 6, thereby driving the pressure on the mechanism 3.

[0057] Reference Figure 11 The detection mechanism 4 includes a first cylinder 41, and both the first cylinder 41 and the second cylinder 42 are vertically arranged and fixedly connected to the frame 1. A pressure differential tester 43 is fixedly connected to the end of the piston rod of the first cylinder 41. The piston rod of the first cylinder 41 is positioned towards the opening of the gearbox 101, and is used to seal the opening of the gearbox 101 with the pressure differential tester 43 for airtightness testing. The pressure differential tester 43 detects whether there is an airtightness problem in the gearbox 101 by applying pressure or negative pressure. The piston rod of the second cylinder 42 extends and retracts towards the outer wall of the gearbox 101 to restrict the vertical movement of the gearbox 101, thereby preventing the gearbox 101 from disengaging from the positioning groove 71 when the pressure differential tester 43 disengages from the gearbox 101.

[0058] The refueling mechanism 5 includes a third cylinder 51 and an oil inlet 52. The third cylinder 51 is vertically mounted and fixed to the frame 1, with its piston rod facing the opening of the gearbox 101. The first cylinder 41 and the third cylinder 51 are arranged circumferentially along the working disc 7, allowing the gearbox 101 to pass sequentially through the pressure differential tester 43 and the oil inlet 52 to complete the airtightness test before refueling.

[0059] The implementation principle of this embodiment is as follows: The first motor 311 drives the rocker arm 314 to swing periodically through the first crank 312 and the first connecting rod 313, thereby driving the ratchet 321 to perform periodic intermittent motion. The second motor 93 drives the turntable 81 to perform periodic intermittent motion through the starter / stopper 92. When the ratchet 321 rotates, the turntable 81 is in a stationary state. When the ratchet 321 rotates, the turntable 81 rotates for feeding materials.

[0060] In one motion cycle, the swing arm 314 first drives the ratchet 321 to rotate 45° via the pawl, and then the swing arm 314 drives the pawl to rotate until it abuts against the next ratchet 321 tooth. When the swing arm 314 drives the ratchet 321 to rotate via the pawl, the working disc 7 rotates 45° along with the ratchet 321, the driving gear 322 drives the driven gear 323 to rotate, and drives the feeding disc 6 to rotate. The positioning groove 71 of the working disc 7 aligns with the sliding groove 61 of the feeding disc 6, so that the feeding mechanism 8 can push the clamp 2 from the sliding groove 61 to the positioning groove 71. The gearbox 101 to be tested moves to below the pressure difference tester 43. After the test is completed, the gearbox 101 to be lubricated moves to below the lubrication mechanism 5.

[0061] When the rocker arm 314 drives the pawl to rotate and engage with the next ratchet 321, the working plate 7 and the feeding plate 6 are stationary. The locking part 941 of the start-stop part 92 engages with the locking groove 811. The turntable 81 rotates 180° with the start-stop part 92. The turntable 81 drives the slider 84 along the sliding groove 61 through the second crank 82 and the second connecting rod 83 to push the clamp 2 into the positioning groove 71 for feeding and positioning. The piston rod of the first cylinder 41 drives the pressure differential tester 43 toward the gearbox 101 located below the first cylinder 41 and performs an airtightness test on it. The end of the piston rod of the first cylinder abuts against the gearbox 101. After the airtightness test is completed, the piston rod of the first cylinder 41 is retracted first, and then the piston rod of the second cylinder 42 is retracted, so that the pressure differential tester 43 is disengaged from the opening of the gearbox 101, thereby preventing the pressure differential tester 43 from driving the gearbox 101 out of the positioning groove 71. At this time, the third cylinder 51 drives the oil inlet machine 52 to lubricate the gearbox 101 that has completed the test. The cooperation between the drive mechanism 3 and the feeding mechanism 8 realizes the automatic feeding and positioning of the gearbox 101, which greatly improves the efficiency of the airtightness test and lubrication of the gearbox 101. At the same time, the gearbox 101 is protected by the clamp 2, which reduces the risk of damage to the gearbox 101.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic refueling device, characterized in that: The system includes a frame (1), a drive mechanism (3), and a fixture (2) for housing the gearbox (101). The drive mechanism (3), mounted on the frame (1), is rotatably connected to a loading tray (6) and a working tray (7). The working tray (7) is connected to the frame (1) around its periphery to a testing mechanism (4) for testing the airtightness of the gearbox (101) and a lubrication mechanism (5) for lubricating the gearbox (101). The loading tray (6) is provided with several sliding grooves (61), and the working tray (7) is provided with several positioning grooves (71) that cooperate with the sliding grooves (61). The drive mechanism (3) controls the loading tray (6) and the working tray (7). Intermittent rotation is performed. The feeding tray (6) is equipped with a feeding mechanism (8). The feeding mechanism (8) is set towards the working tray (7). The feeding mechanism (8) is used to push the clamp (2) in the sliding groove (61) to the positioning groove (71). The feeding mechanism (8) and the drive mechanism (3) cooperate to form at least two non-interfering working states: State 1: The drive mechanism (3) drives the feeding tray (6) and the working tray (7) to rotate simultaneously so that the clamp (2) enters the next working position. State 2: The feeding mechanism (8), the detection mechanism (4) and the lubrication mechanism (5) perform operations on the gearbox (101) at their respective workstations.

2. The automatic refueling device according to claim 1, characterized in that: The drive mechanism (3) includes a drive assembly (31) and a transmission assembly (32). The transmission assembly (32) includes a ratchet (321), a first pawl (324), and a first spring (326). The drive assembly (31) includes a rocker arm (314). The working disc (7) and the ratchet (321) are fixedly connected. One end of the rocker arm (314) is rotatably connected to the frame (1). One end of the first pawl (324) is rotatably connected to the rocker arm (314), and the other end abuts against the circumference of the ratchet (321). One end of the first spring (326) is fixedly connected to the first pawl (324), and the other end is fixedly connected to the rocker arm (314). The rotation axis of the working disc (7) and the rotation axis of the ratchet (321) are coaxial.

3. The automatic refueling device according to claim 2, characterized in that: The transmission assembly (32) further includes a drive gear (322) and a driven gear (323). The drive gear (322) is coaxially and fixedly connected to the working disc (7), and the driven gear (323) is coaxially and fixedly connected to the feeding disc (6). The drive gear (322) and the driven gear (323) mesh.

4. The automatic refueling device according to claim 2, characterized in that: The drive assembly (31) further includes a first motor (311), a first crank (312) and a first connecting rod (313). The first motor (311) is mounted on the frame (1). One end of the first crank (312) is fixedly connected to the output shaft of the first motor (311), and the other end is rotatably connected to the first connecting rod (313). The end of the first connecting rod (313) away from the first crank (312) is rotatably connected to the rocker arm (314).

5. The automatic refueling device according to claim 1, characterized in that: The feeding mechanism (8) includes a turntable (81), a second crank (82), a second connecting rod (83), and a slider (84). The turntable (81) is rotatably connected to the frame (1). One end of the second crank (82) is fixedly connected to the turntable (81), and the other end is rotatably connected to the second connecting rod (83). The second connecting rod (83) is rotatably connected to the slider (84), and the slider (84) is slidably connected to the sliding groove (61).

6. The automatic refueling device according to claim 5, characterized in that: The frame (1) is connected to an opening and closing mechanism (9), which includes an opening and closing element (92) and a second motor (93). The output shaft of the second motor (93) mounted on the frame (1) is fixedly connected to one end of the opening and closing element (92). The opening and closing element (92) is slidably connected to a limit block (94). The frame (1) is connected to a stop block (95) with a wedge-shaped end. The stop block (95) is located on the rotation trajectory of the limit block (94). The turntable (8) 1) The circumferential part is provided with several snap-fit ​​grooves (811). The limiting block (94) snaps into the snap-fit ​​grooves (811) to drive the turntable (81) to rotate. The start-stop part (92) is provided with a third spring (91). One end of the third spring (91) is fixedly connected to the start-stop part (92), and the other end is fixedly connected to the limiting block (94). The stop block (95) and the third spring (91) cooperate to force the limiting block (94) to move toward or away from the turntable (81).

7. The automatic refueling device according to claim 2, characterized in that: The number of teeth of the ratchet (321), the number of sliding grooves (61), and the number of positioning grooves (71) correspond one-to-one.

8. The automatic refueling device according to claim 1, characterized in that: The bottom of the sliding groove (61) is provided with a limiting groove (64). The limiting groove (64) is provided with a positioning member (63) and a fourth spring (65). One end of the fourth spring (65) is fixedly connected to the positioning member (63), and the other end is fixedly connected to the limiting groove (64). The positioning member (63) is slidably connected to the limiting groove (64). The positioning member (63) includes a first limiting part (631) and a second limiting part (632). The opposite sides of the first limiting part (631) and the second limiting part (632) are both inclined towards the feeding tray (6).

9. The automatic refueling device according to claim 1, characterized in that: The frame (1) is rotatably connected to a second pawl (325), which abuts against the ratchet (321) circumferentially. The second pawl (325) is connected to a second spring (327), one end of which is fixedly connected to the frame (1) and the other end is fixedly connected to the second pawl (325).

Images