Gearbox assembly device

Abstract

The present invention belongs to the technical field of gearbox production, and relates to a gearbox assembly device, including a workbench, an axle frame conveying mechanism, a freezing mechanism, a transfer mechanism, a clamping mechanism and an angle adjustment mechanism. The conveying mechanism includes a conveyor belt and a bracket. The freezing mechanism includes a rod rack, the upper surface of the rod rack is provided with a groove, and a cold source box is fixed to the bottom of the rod rack; the transfer mechanism includes a crane; the clamping mechanism includes a support plate and a clamping rod, and the angle adjustment mechanism is used to adjust the angle of the support plate. After the gear shaft is placed on the axle frame, the bracket and the rod rack are driven to move by the conveyor belt, so that the rod rack lifts the gear shaft and moves along the top of the conveyor belt to the subsequent workstation. The gear shaft is quickly cooled and cooled during the movement, so that the gear can be installed on the gear shaft later. When the gear shaft moves to the transfer mechanism, the gear shaft is removed from the rod rack by the transfer mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of gearbox production, and in particular to a gearbox assembly device. Background Art

[0002] Production auxiliary equipment in the automobile production process, especially the tooling tools used in the gearbox production process, are mainly used through limit blocks and gearbox assembly sliding tables when assembling the gearbox and the engine. However, the tooling tools in the existing gearbox production process have a low degree of automation and cannot accurately control the moving distance of the gearbox assembly sliding table, and cannot effectively control the assembly accuracy of the gearbox and the engine.

[0003] A gearbox assembly device with a Chinese patent document announcement number of CN117840721B includes a body, a gear shaft and two gearbox housings, wherein a rectangular opening is provided on the upper surface of the body, and two guide rods are fixedly installed between the inner walls of the body on opposite sides near the rectangular opening. The gear shaft is lifted by a bracket to move in the direction of the assembly mechanism, and when the position sensor installed at the top of the body detects the gear shaft, the movement of the gear shaft is stopped. At this time, the driving motor drives the bidirectional screw to rotate, so that the two assembly racks threaded at both ends of the bidirectional screw are close to each other, so that the gearbox housings installed on the two assembly racks are close to the gear shaft at the same time, so that the gear shaft is assembled into the gearbox housing. Since the center height of the gear shaft is the same horizontal height each time it is assembled, and the position of the gear shaft can be better positioned by using the position sensor. However, there are still some shortcomings in this patent: 1. Some gears and gear shafts are interference fit, which makes it difficult to assemble the gears on the gear shafts. 2. When multiple gear shafts need to be installed in the gearbox housing, it is impossible to transport the multiple gear shafts into the housing for assembly. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that multiple gear shafts and gears in a gearbox are difficult to assemble, the present invention provides a gearbox assembly device to solve the above problem.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a gearbox assembly device, comprising a workbench, a shaft frame for placing a gear shaft is fixed on the workbench, and also comprises a conveying mechanism, a freezing mechanism, a transfer mechanism, a clamping mechanism and an angle adjustment mechanism, the conveying mechanism comprises a conveyor belt, a plurality of brackets are vertically fixed on the surface of the conveyor belt, a plurality of freezing mechanisms are arranged one by one corresponding to the brackets, the freezing mechanism comprises a bar rack, the upper positions of both ends of the bar rack are hinged with the top of the bracket, the upper surface of the bar rack is provided with a groove, the gear shaft can be placed in the groove, a cold source box is fixed at the bottom of the bar rack, and the weight of the cold source box is greater than the weight of the gear shaft; the transfer mechanism comprises a crane, and the crane is used to hoist the gear shaft; the clamping mechanism comprises a pallet and two clamping rods, the pallet is installed on the workbench, the pallet is used to place a gearbox housing, two clamping rods are parallelly installed on the pallet, the two clamping rods are used to clamp the gearbox housing, and the angle adjustment mechanism is used to adjust the angle of the pallet.

[0006] Preferably, the angle adjustment mechanism includes a semicircular leg, a leg seat, a central axis and a worm gear mechanism, the semicircular leg is fixed to the bottom of the support plate, the leg seat is fixed to the workbench, the upper part of the leg seat has an arc track, the semicircular leg is slidably installed in the arc track and is coaxially arranged with the arc track, the semicircular leg is coaxially fixedly connected to the central axis, the worm wheel of the worm gear mechanism is coaxially fixedly connected to the central axis, and rotating the worm of the worm gear mechanism can drive the central axis and the semicircular leg to slide along the inner circle of the arc track.

[0007] Preferably, the rod rack is a shell structure with a hollow interior, a vent hole is provided in the groove of the rod rack, and the cold source box is connected to the interior of the rod rack.

[0008] Preferably, the cold source box contains liquid nitrogen and semiconductor refrigeration plates.

[0009] Preferably, the transfer mechanism also includes two unloading racks, which are tilted and fixed on the workbench and located on both sides of the end of the conveyor belt. The width of the two unloading racks is greater than the width of the conveyor belt and less than the length of the gear shaft. When the conveyor belt drives the bracket to move, the bracket can pass between the two unloading racks.

[0010] Preferably, the transfer mechanism also includes a slide rail, which is fixed on the workbench, and the length direction of the slide rail remains parallel to the forward direction of the conveyor belt. A slider is installed on the slide rail, and a hanging arm is fixed on the slider. A crossbeam is fixed on the top of the hanging arm, and the crane is installed on the crossbeam.

[0011] Preferably, a clamp is fixed at the end of the steel cable of the crane, and the clamp is used to clamp the gear shaft.

[0012] Preferably, a slide groove is provided on the support plate, and the clamping rod is slidably installed in the slide groove. A plurality of threaded seats are also fixed on the clamping rod, and a locking screw is threadedly connected to the threaded seat, and the bottom of the locking screw can abut against the support plate.

[0013] The beneficial effects of the present invention are as follows: a conveying mechanism and a freezing mechanism are provided, and after the gear shaft is placed on the shaft rack, the conveyor belt drives the bracket and the rod rack located below the conveyor belt to move, so that the rod rack moves to the bottom of the gear shaft to lift the gear shaft, and then the conveyor belt continues to move. At this time, the bracket and the rod rack continue to hold the gear shaft and move along the top of the conveyor belt to the subsequent workstation, and the gear shaft is quickly cooled during the movement to facilitate the subsequent installation of the gear on the gear shaft. When the gear shaft moves to the transfer mechanism, the gear shaft is removed from the rod rack by the transfer mechanism, and then the conveyor belt continues to drive the bracket and the rod rack to move to the bottom of the conveyor belt to transport the next gear shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of a gearbox assembly device of the present invention;

[0016] Figure 2 It is a structural schematic diagram of a discharge frame of a gearbox assembly device of the present invention;

[0017] Figure 3 It is a structural schematic diagram of a conveyor belt of a gearbox assembly device of the present invention;

[0018] Figure 4 It is a structural schematic diagram of a rod rack of a gearbox assembly device of the present invention;

[0019] Figure 5 It is a structural schematic diagram of a suspension arm of a gearbox assembly device of the present invention;

[0020] Figure 6 It is a structural schematic diagram of a support plate of a gearbox assembly device of the present invention;

[0021] Figure 7 The invention discloses a schematic structural diagram of a leg support of a gearbox assembly device.

[0022] Figure numerals: 1. workbench; 2. gear shaft; 3. shaft frame; 4. conveying mechanism; 5. freezing mechanism; 6. transfer mechanism; 7. clamping mechanism; 8. angle adjustment mechanism; 9. conveyor belt; 10. bracket; 11. rod rack; 12. cold source box; 13. crane; 14. support plate; 15. clamping rod; 16. gearbox housing; 17. semicircular support leg; 18. support leg seat; 19. middle axis; 20. worm gear mechanism; 21. circular arc track; 22. air vent; 23. unloading rack; 24. slide rail; 25. slide block; 26. boom; 27. crossbeam; 28. clamping claw; 29. ​​slide groove; 30. threaded seat; 31. locking screw. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] like Figures 1 to 7 As shown, the present invention provides an embodiment of a gearbox assembly device, including a workbench 1, on which a shaft frame 3 for placing a gear shaft 2 is fixed, and also includes a conveying mechanism 4, a freezing mechanism 5, a transfer mechanism 6, a clamping mechanism 7 and an angle adjustment mechanism 8. The conveying mechanism 4 includes a conveyor belt 9, on the surface of which a plurality of brackets 10 are vertically fixed, and a plurality of freezing mechanisms 5 are arranged in a one-to-one correspondence with the brackets 10. The freezing mechanism 5 includes a rod rack 11, and the upper positions of both ends of the rod rack 11 are hinged to the top of the bracket 10. A groove is provided on the upper surface of the bar rack 11, and the gear shaft 2 can be placed in the groove. A cold source box 12 is fixed to the bottom of the bar rack 11. The weight of the cold source box 12 is greater than the weight of the gear shaft 2. After the gear shaft 2 is placed on the bar rack 11, the center of gravity of the bar rack 11 as a whole is still close to the cold source box 12. Therefore, when the bracket 10 moves with the conveyor belt 9 and is in a horizontal state, the bar rack 11 can still maintain a vertical state under the action of gravity, so that the bar rack 11 can always lift the gear shaft 2 from the bottom and move forward.

[0025] The working principle of the conveying mechanism 4 is: after the gear shaft 2 is placed on the shaft frame 3, the conveyor belt 9 drives the bracket 10 and the rod rack 11 located below the conveyor belt 9 to move, so that the rod rack 11 moves to the bottom of the gear shaft 2 to lift the gear shaft 2, and then the conveyor belt 9 continues to move. At this time, the bracket 10 and the rod rack 11 continue to hold the gear shaft 2 and move along the top of the conveyor belt 9 to the subsequent workstation. The gear shaft 2 is quickly cooled down during the movement to facilitate the subsequent installation of the gear on the gear shaft 2. When the gear shaft 2 moves to the transfer mechanism 6, the gear shaft 2 is removed from the rod rack 11 by the transfer mechanism 6, and then the conveyor belt 9 continues to drive the bracket 10 and the rod rack 11 to move to the bottom of the conveyor belt 9 to transport the next gear shaft 2.

[0026] The rod rack 11 is a shell structure with a hollow interior. An air vent 22 is provided in the groove of the rod rack 11. The cold source box 12 is connected to the interior of the rod rack 11. The cold source box 12 contains liquid nitrogen and semiconductor refrigeration sheets. When the gear shaft 2 is placed in the groove of the rod rack 11, the gear shaft 2 is cooled by the liquid nitrogen in the cold source box 12. The setting of the air vent 22 is beneficial to the heat exchange between the gear shaft 2 and the liquid nitrogen in the cold source box 12, thereby improving the cooling speed of the gear shaft 2. At the same time, the semiconductor refrigeration sheet in the cold source box 12 can keep the cold source box 12 in a low-temperature environment. The outside of the cold source box 12 can also be wrapped with insulation cotton for insulation to reduce the consumption rate of liquid nitrogen.

[0027] The transfer mechanism 6 includes two unloading racks 23, which are tilted and fixed on the workbench 1 and are located on both sides of the end of the conveyor belt 9. The width of the two unloading racks 23 is greater than the width of the conveyor belt 9 and less than the length of the gear shaft 2. When the conveyor belt 9 drives the bracket 10 to move, the bracket 10 can pass between the two unloading racks 23.

[0028] The transfer mechanism 6 also includes a slide rail 24 and a crane 13. The slide rail 24 is fixed on the workbench 1. The length direction of the slide rail 24 is kept parallel to the forward direction of the conveyor belt 9. A slider 25 is installed on the slide rail 24. A suspension arm 26 is fixed on the slider 25. A crossbeam 27 is fixed to the top of the suspension arm 26. The crane 13 is installed on the crossbeam 27. A clamp 28 is fixed at the end of the steel cable of the crane 13. The clamp 28 is used to clamp the gear shaft 2. The crane 13 is used to lift the gear shaft 2.

[0029] The working principle of the transfer mechanism 6 is: when the conveyor belt 9 drives the bracket 10, the bar rack 11 and the gear shaft 2 to move to the position of the unloading rack 23, the bracket 10 and the bar rack 11 continue to move with the conveyor belt 9 to between the two unloading racks 23. At this time, the two ends of the gear shaft 2 on the bar rack 11 are overlapped on the unloading rack 23. Then the bracket 10 and the bar rack 11 continue to move downward with the conveyor belt 9 and pass through the two unloading racks 23. The bracket 10 passes through the bracket 10, and the gear shaft 2 is blocked by the unloading rack 23 and cannot move further downward, so that the gear shaft 2 can be separated from the bar rack 11 to complete the unloading action. When the gear shaft 2 is separated from the bar rack 11, the gear shaft 2 rolls along the inclined unloading rack 23 to the end of the unloading rack 23 under the influence of its own gravity. Then the installer moves the boom 26 along the slide rail 24. Move the crane 13 to just above the gear shaft 2, then lower the fixed clamp 28 at the end of the steel beam of the crane 13, clamp the gear shaft 2 with the fixed clamp 28, and then lift the gear shaft 2 with the crane 13. Then the installer will lift the gear shaft 2 to a suitable height and assemble the gear to the gear shaft 2. Then the installer will continue to move the boom 26 to move the crane 13 to just above the gearbox case 16, and finally place the gear shaft 2 into the gearbox case 16 for installation through the crane 13. During the installation process, the height of the gear shaft 2 can be adjusted at any time through the crane 13 to reduce the physical exertion of the installer, and at the same time, it can also prevent the gear shaft 2 from falling and damaging the remaining gears and gear shaft 2 in the gearbox case 16.

[0030] The angle adjustment mechanism 8 is used to adjust the angle of the support plate 14. The angle adjustment mechanism 8 includes a semicircular leg 17, a leg seat 18, a central axis 19 and a worm gear mechanism 20. The semicircular leg 17 is fixed to the bottom of the support plate 14, the leg seat 18 is fixed on the workbench 1, and the upper part of the leg seat 18 has an arc track 21. The semicircular leg 17 is slidably installed in the arc track 21 and is coaxially arranged with the arc track 21. The semicircular leg 17 is coaxially fixedly connected with the central axis 19, and the worm wheel of the worm gear mechanism 20 is coaxially fixedly connected with the central axis 19. Rotating the worm of the worm gear mechanism 20 can drive the central axis 19 and the semicircular leg 17 to slide along the inner circle of the arc track 21.

[0031] When the gear shaft 2 needs to be hoisted into the gearbox case 16, the gear shaft 2 that has been installed in the gearbox case 16 and the opening position of the gearbox case 16 may be inconvenient to operate. At this time, the worm of the worm gear mechanism 20 is rotated to adjust the angle of the gearbox case 16. The gearbox case 16 is adjusted to an angle suitable for hoisting and assembling the gear shaft 2, which can reduce the influence of the remaining gear shafts 2 in the gearbox on the assembly process, thereby improving the convenience of the gearbox assembly process.

[0032] The clamping mechanism 7 includes a support plate 14 and two clamping rods 15. The support plate 14 is installed on the workbench 1. The support plate 14 is used to place the gearbox housing 16. The two clamping rods 15 are installed in parallel on the support plate 14. A slide groove 29 is opened on the support plate 14. The clamping rods 15 are slidably installed in the slide groove 29. A plurality of threaded seats 30 are also fixed on the clamping rods 15. The threaded seats 30 are internally threadedly connected with locking screws 31. The bottom of the locking screws 31 can abut against the support plate 14. The two clamping rods 15 are used to clamp the gearbox housing 16.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A gearbox assembly device, comprising a workbench (1), on which a shaft frame (3) for placing a gear shaft (2) is fixed, characterized in that: It also includes a conveying mechanism (4), a freezing mechanism (5), a transfer mechanism (6), a clamping mechanism (7) and an angle adjustment mechanism (8), wherein the conveying mechanism (4) includes a conveyor belt (9), a plurality of brackets (10) are vertically fixed to the surface of the conveyor belt (9), the freezing mechanism (5) is provided with a plurality of brackets (10) in a one-to-one correspondence, the freezing mechanism (5) includes a bar rack (11), the upper positions of both ends of the bar rack (11) are hinged to the top of the bracket (10), the upper surface of the bar rack (11) is provided with a groove, the gear shaft (2) can be placed in the groove, and a cold source box (12) is fixed to the bottom of the bar rack (11), the weight of the cold source box (12) is greater than the weight of the gear shaft (2); The transfer mechanism (6) comprises a crane (13), and the crane (13) is used to lift the gear shaft (2); The clamping mechanism (7) comprises a support plate (14) and two clamping rods (15); the support plate (14) is mounted on the workbench (1); the support plate (14) is used to place a gearbox housing (16); the two clamping rods (15) are mounted in parallel on the support plate (14); the two clamping rods (15) are used to clamp the gearbox housing (16); and the angle adjustment mechanism (8) is used to adjust the angle of the support plate (14); The angle adjustment mechanism (8) comprises a semicircular leg (17), a leg seat (18), a central axis (19) and a worm gear mechanism (20); the semicircular leg (17) is fixed to the bottom of the support plate (14); the leg seat (18) is fixed to the workbench (1); the upper portion of the leg seat (18) has an arc track (21); the semicircular leg (17) is slidably mounted in the arc track (21) and is coaxially arranged with the arc track (21); the semicircular leg (17) is coaxially fixedly connected to the central axis (19); the worm wheel of the worm gear mechanism (20) is coaxially fixedly connected to the central axis (19); and rotating the worm of the worm gear mechanism (20) can drive the central axis (19) and the semicircular leg (17) to slide along the inner circle of the arc track (21); The bar rack (11) is a shell structure with a hollow interior, a vent hole (22) is provided in a groove of the bar rack (11), and the cold source box (12) is connected to the interior of the bar rack (11); The transfer mechanism (6) further comprises two unloading racks (23), the two unloading racks (23) being tiltedly fixed on the workbench (1) and being located on both sides of the end of the conveyor belt (9), the width of the two unloading racks (23) being greater than the width of the conveyor belt (9) and less than the length of the gear shaft (2), and when the conveyor belt (9) drives the bracket (10) to move, the bracket (10) can pass between the two unloading racks (23).

2. A gearbox assembly device according to claim 1, characterized in that: The cold source box (12) contains liquid nitrogen and semiconductor refrigeration sheets.

3. A gearbox assembly device according to claim 1, characterized in that: The transfer mechanism (6) further comprises a slide rail (24), wherein the slide rail (24) is fixed on the workbench (1), wherein the length direction of the slide rail (24) is parallel to the forward direction of the conveyor belt (9), wherein a slider (25) is mounted on the slide rail (24), wherein a suspension arm (26) is fixed on the slider (25), wherein a crossbeam (27) is fixed at the top end of the suspension arm (26), and wherein the crane (13) is mounted on the crossbeam (27).

4. A gearbox assembly device according to claim 3, characterized in that: A clamping claw (28) is fixed to the end of the steel cable of the crane (13), and the clamping claw (28) is used to clamp the gear shaft (2).

5. A gearbox assembly device according to claim 4, characterized in that: The support plate (14) is provided with a slide groove (29), and the clamping rod (15) is slidably installed in the slide groove (29). A plurality of threaded seats (30) are also fixed on the clamping rod (15), and the threaded seats (30) are internally threadedly connected with locking screws (31), and the bottom of the locking screws (31) can abut against the support plate (14).

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