Tractor gearbox rear axle assembly reversible lifting tool structure

Abstract

This utility model relates to the field of rear axle technology for transmissions, and discloses a tiltable lifting device structure for assembling a tractor transmission rear axle. It includes a frame, a steering component mounted on the frame, two first rotating shafts rotatably connected to the drive frame, a mounting platform for fixing the transmission housing on the frame, the mounting platform being opposite to the drive frame, a driven gear coaxially mounted on the second rotating shaft, a fixing frame horizontally fixed at the top of the fixing column, a third rotating shaft rotatably connected to the fixing frame, the second and third rotating shafts being linked, a lead screw rotatably connected to the fixing frame, the third rotating shaft controlling the rotation of the lead screw, and a lifting device for assembling the rear axle assembly threaded onto the lead screw. The other side of the lifting device is slidably connected to the fixing frame, achieving the effect of simultaneously rotating the rear axle mechanically and simultaneously propelling and lifting.

Description

Technical Field

[0001] This utility model relates to the field of gearbox rear axle technology, and in particular to a tractor gearbox rear axle assembly tiltable lifting device structure. Background Technology

[0002] The rear axle of a tractor, also known as the drive axle, is the collective term for all transmission mechanisms located between the gearbox and the drive wheels. The function of the rear axle is to distribute the power input from the gearbox, after deceleration, torque increase, and a change in power transmission direction, to the left and right drive wheels, enabling the tractor to move. The left and right drive wheels rotate at different speeds. The rear axle of a tracked tractor consists of a center drive, a steering mechanism, and a final drive. The center drive and steering mechanism are mounted in the same housing, while the main drive is mounted in separate housings on either side.

[0003] Currently, the assembly of the rear axle assembly of a tractor gearbox is usually carried out in a vertical position. After the rear axle assembly is assembled, it is lifted by a hoist and manually rotated 90 degrees to a horizontal position before being manually assembled into the gearbox housing. Since the rear axle assembly is large, manual rotation is dangerous, time-consuming, labor-intensive, and inefficient. Therefore, a tiltable hoist structure for tractor gearbox rear axle assembly is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a tractor gearbox rear axle assembly tiltable lifting device structure, which can achieve the effect of propulsion and lifting linkage by mechanically rotating the rear axle.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a tractor gearbox rear axle assembly tiltable lifting device structure, including a frame, a steering component mounted on the frame, a drive frame fixedly connected to the steering component, two first rotating shafts rotatably connected to the drive frame, a mounting platform for fixing the gearbox housing on the frame, the mounting platform being opposite to the drive frame, a synchronous pulley coaxially fixedly connected to the first rotating shaft, the two synchronous pulleys being connected by a synchronous belt, a fixed column being provided on the frame between the mounting platform and the drive frame, a second rotating shaft rotatably connected to the fixed column, a driven gear coaxially provided on the second rotating shaft, a fixed frame horizontally fixed at the top of the fixed column, a third rotating shaft rotatably connected to the fixed frame, the second rotating shaft and the third rotating shaft being linked, a lead screw rotatably connected to the fixed frame, the third rotating shaft controlling the rotation of the lead screw, a lifting device for lifting the rear axle assembly being threadedly connected to the lead screw, and the other side of the lifting device being slidably connected to the fixed frame.

[0006] A further feature of this invention is that the steering component includes a steering rod rotatably connected to the frame, a slide rod slidably connected to the bottom end of the frame, a connecting rod hinged to the end of the slide rod, a fixedly perpendicular connection between the end of the connecting rod away from the slide rod and the drive frame, and a hinged connection between the end of the steering rod away from the frame and the middle of the connecting rod.

[0007] By adopting the above technical solution, and by setting a drive frame vertically at the end of the connecting rod, when the slide bar slides on the frame, the slide bar drives the connecting rod to rotate. The connecting rod transmits power to the steering rod, and under the action of the steering rod and the slide bar, the connecting rod swings. The back-and-forth movement of the slide bar causes the connecting rod to swing back and forth. The maximum distance of the slide bar's movement allows the connecting rod to be placed vertically and tilted, respectively. When the connecting rod is in the vertical position, the drive frame is in the horizontal position and interferes with the position of the rear axle that is vertically lifted by the lifting device. During the process of the slide bar driving the drive frame to the horizontal position, the synchronous belt slowly contacts the vertically lifted rear axle assembly and, as the drive frame is horizontally lowered... The rear axle is gradually placed horizontally on the timing belt, enabling automatic 90-degree rotation of the rear axle assembly and mechanical installation onto the gearbox housing. By setting a fourth shaft and a moving gear, the first shaft transmits power to the second shaft via a drive gear and a driven gear. The second shaft then transmits power to the third shaft, which drives a lead screw to rotate. The lead screw transmits power to a lifting device for the rear axle assembly, causing the lifting device to move on the fixed frame. The lifting device pulls the rear axle, which is placed horizontally on the timing belt. This allows the timing belt and the lifting device to work simultaneously during the mechanical installation of the rear axle onto the housing, ensuring a smooth installation.

[0008] A further feature of this invention is that: a sliding sleeve for sliding the slide rod is provided at the bottom end of the frame; a cylinder is connected between the slide rod and the mounting platform; the cylinder body is fixedly connected to the bottom end of the mounting platform; the cylinder piston is fixedly connected to the end of the slide rod; and a stop block is provided at the bottom of the end of the frame away from the mounting platform, the stop block intersecting the movement trajectory of the slide rod.

[0009] By adopting the above technical solution, by setting up a cylinder and a stop, the cylinder drives the slide rod to slide, thereby driving the drive frame to be set horizontally and tilted. When the rear axle assembly is placed horizontally on the drive frame, because the rear axle assembly is large in volume and heavy in mass, the cylinder can achieve the purpose of being stably stopped in a horizontal position without being tilted by the rear axle. By setting up a stop, when the slide rod drives the drive frame to be set tilted, the drive frame can be stably stopped in an tilted position under the combined action of the cylinder and the slide rod.

[0010] A further feature of this invention is that the drive frame is equipped with a motor, and the output end of the motor is coaxially and fixedly connected to the first rotating shaft.

[0011] By adopting the above technical solution, the motor drives the first rotating shaft to rotate, and the first rotating shaft drives the synchronous belt pulley to rotate, thereby reducing kinetic energy loss and making the transmission smoother when the motor is driven.

[0012] A further feature of this invention is that: a driving wheel is coaxially arranged on the second rotating shaft, and a driven wheel is coaxially arranged on the third rotating shaft; both the driving wheel and the driven wheel are pulleys and connected by a belt.

[0013] A further feature of this invention is that the radius of the driving wheel is smaller than the radius of the driven wheel.

[0014] By adopting the above technical solution, the same direction of transmission can be achieved by connecting the driving wheel and the driven wheel through a belt; by setting the radius of the driven wheel to be larger than that of the driving wheel, the second shaft rotating at the same speed as the first shaft, and the third shaft rotating at a speed lower than that of the second shaft, the horizontal movement speed of the rear axle is greater than that of the spreader, so that the spreader is not completely placed on the drive belt, thus achieving the purpose of stability and adjustability during the installation process.

[0015] A further feature of this invention is that a first bevel gear is provided at the end of the third rotating shaft, and a second bevel gear is provided at the end of the lead screw, wherein the first bevel gear meshes with the second bevel gear.

[0016] By adopting the above technical solution, by setting the first bevel gear and the second bevel gear, the first rotating shaft transmits power to the second rotating shaft, the second rotating shaft transmits power to the third rotating shaft, and the third rotating shaft transmits power to the lead screw through the meshing of the first bevel gear and the second bevel gear. Since the other side of the lifting device is slidably connected to the fixed frame, the rotation of the lead screw drives the lifting device to move, thus achieving the purpose of moving the lifting device on the fixed frame.

[0017] A further feature of this invention is that the lifting device is configured to be liftable.

[0018] By adopting the above technical solutions and setting the lifting device to a liftable structure, such as a screw and nut transmission mechanism, a hydraulic lifting mechanism, a gear and rack transmission mechanism, etc., the purpose of installation can be achieved for rear axles of different lengths.

[0019] A further feature of this invention is that the mounting platform has a guide groove, and a clamping plate for fixing the gearbox housing is slidably connected to the mounting platform through the guide groove. The mounting platform is threaded with bolts, and the ends of the bolts are fixedly connected to the clamping plate.

[0020] A further feature of this invention is that a handwheel is provided at the end of the bolt away from the clamping plate.

[0021] By adopting the above technical solution, and by setting clamping plates, the width of the clamping plates on both sides can be controlled by manually rotating the bolts for gearbox housings of different widths, and the housing can be fixed between the clamping plates, thus achieving the purpose of fixing gearbox housings of different widths.

[0022] The beneficial effects of this utility model are:

[0023] By setting a drive frame, which is vertically positioned at the end of the connecting rod, when the slide bar slides on the frame, the slide bar drives the connecting rod to rotate. The connecting rod transmits power to the steering rod, causing the connecting rod to swing under the action of the steering rod and the slide bar. The back-and-forth movement of the slide bar causes the connecting rod to swing back and forth. The maximum distance the slide bar moves determines whether the connecting rod is placed vertically or tilted. When the connecting rod is in the vertical position, the drive frame is in the horizontal position and interferes with the position of the rear axle that is vertically lifted by the lifting device. During the process of the slide bar driving the drive frame to the horizontal position, the synchronous belt slowly contacts the vertically lifted rear axle assembly and moves with the water flow of the drive frame. The rear axle is gradually placed horizontally on the timing belt, enabling automatic 90-degree rotation of the rear axle assembly and mechanical installation onto the gearbox housing. The first shaft transmits power to the second shaft via the drive and driven gears, which in turn transmits power to the third shaft. The third shaft drives the lead screw to rotate, which in turn transmits power to the lifting device for the rear axle assembly. This causes the lifting device to move on the fixed frame, pulling the rear axle horizontally placed on the timing belt. This allows the timing belt and lifting device to work simultaneously and smoothly install the rear axle onto the housing.

[0024] By setting up cylinders and stops, the cylinders drive the slide rod to slide, thereby driving the drive frame to be set horizontally and tilted. When the rear axle assembly is placed horizontally on the drive frame, due to the large size and heavy weight of the rear axle assembly, the cylinders can achieve the purpose of keeping it stably in a horizontal position without being tilted by the rear axle. By setting up stops, when the slide rod drives the drive frame to be set tilted, the drive frame can be stably kept in an tilted position under the combined action of the cylinders and the slide rods. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the side mechanism of this utility model.

[0028] Figure 3 yes Figure 2 A schematic diagram of the partial structure at point A in the middle.

[0029] Figure 4 This is a partial structural diagram of the steering component in this utility model.

[0030] In the diagram, 1. Frame; 2. Steering component; 21. Steering rod; 22. Slide rod; 23. Connecting rod; 24. Sliding sleeve; 25. Cylinder; 26. Stop block; 3. Drive frame; 31. Motor; 4. First rotating shaft; 41. Synchronous pulley; 42. Synchronous belt; 43. Drive gear; 5. Fixed column; 51. Second rotating shaft; 511. Driven gear; 512. Drive wheel; 6. Fixed frame; 61. Third rotating shaft; 611. Driven wheel; 612. Belt; 613. First bevel gear; 7. Lead screw; 71. Second bevel gear; 8. Lifting device; 9. Mounting platform; 91. Guide groove; 911. Clamping plate; 912. Bolt; 913. Handwheel. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] Examples, such as Figure 1 , Figure 2As shown, a tractor gearbox rear axle assembly tiltable hanger 8 structure includes a frame 1, a steering component 2 mounted on the frame 1, a drive frame 3 fixedly connected to the steering component, two first rotating shafts 4 rotatably connected to the drive frame 3, a mounting platform 9 for fixing the gearbox housing on the frame 1, the mounting platform 9 being opposite to the drive frame 3, a timing belt 42 pulley 41 coaxially fixedly connected to the first rotating shaft 4, the two timing belt 42 pulleys 41 being connected by timing belt 42, a drive gear 43 being provided at the end of the first rotating shaft 4, and the frame 1 being located at the... A fixed column 5 is provided between the mounting platform 9 and the drive frame 3. A second rotating shaft 51 is rotatably connected to the fixed column 5. A driven gear 511 is coaxially provided on the second rotating shaft 51. A fixed frame 6 is horizontally fixed at the top of the fixed column 5. A third rotating shaft 61 is rotatably connected to the fixed frame 6. The second rotating shaft 51 and the third rotating shaft 61 are linked. A lead screw 7 is rotatably connected to the fixed frame 6. The third rotating shaft 61 controls the rotation of the lead screw 7. A lifting device 8 for lifting the rear axle assembly is threadedly connected to the lead screw 7. The other side of the lifting device 8 is slidably connected to the fixed frame 6. The steering component 2 includes a steering rod 21 rotatably connected to the frame 1. A sliding rod 22 is slidably connected to the bottom end of the frame 1. A connecting rod 23 is hinged to the end of the sliding rod 22. The end of the connecting rod 23 away from the sliding rod 22 is fixedly and vertically connected to the drive frame 3. The end of the steering rod 21 away from the frame 1 is hinged to the middle of the connecting rod 23.

[0033] By setting a drive frame 3, which is vertically positioned at the end of the connecting rod 23, when the slide rod 22 slides on the frame 1, the slide rod 22 drives the connecting rod 23 to rotate. The connecting rod 23 transmits power to the steering rod 21. Under the action of the steering rod 21 and the slide rod 22, the connecting rod 23 swings. The back-and-forth movement of the slide rod 22 causes the connecting rod 23 to swing back and forth. The maximum distance that the slide rod 22 moves allows the connecting rod 23 to be placed vertically and tilted, respectively. When the connecting rod 23 is in the vertical position, the drive frame 3 is in the horizontal position and interferes with the position of the rear axle that is vertically lifted by the lifting device 8. During the process of the slide rod 22 driving the drive frame 3 to the horizontal position, the synchronous belt 42 slowly contacts the vertically lifted rear axle assembly and, with the movement of the slide rod 22, drives the connecting rod 23 to rotate. With the drive frame 3 placed horizontally, the rear axle is gradually placed horizontally on the timing belt 42, enabling the automatic 90-degree rotation of the rear axle assembly and mechanical installation of the rear axle assembly onto the gearbox housing. The first shaft 4 transmits power to the second shaft 51 via the drive gear 43 and the driven gear 511. The second shaft 51 transmits power to the third shaft 61, which drives the lead screw 7 to rotate. The lead screw 7 transmits power to the lifting device 8 for hoisting the rear axle assembly, causing the lifting device 8 to move on the fixed frame 6. The lifting device 8 pulls the rear axle placed horizontally on the timing belt 42, enabling the timing belt 42 and the lifting device 8 to work simultaneously and smoothly install the rear axle onto the housing when it is mechanically installed.

[0034] like Figure 2 , Figure 4 As shown, the bottom end of the frame 1 is provided with a sliding sleeve 24 for the sliding rod 22 to slide. A cylinder 25 is connected between the sliding rod 22 and the mounting platform 9. The cylinder body of the cylinder 25 is fixedly connected to the bottom end of the mounting platform 9, and the piston of the cylinder 25 is fixedly connected to the end of the sliding rod 22. A stop block 26 is provided at the bottom of the end of the frame 1 away from the mounting platform 9. The stop block 26 intersects with the movement trajectory of the sliding rod 22. By setting the cylinder 25 and the stop block 26, the cylinder 25 drives the sliding rod 22 to slide, thereby driving the drive frame 3 to be horizontally and tilted. When the rear axle assembly is placed horizontally on the drive frame 3, due to the large volume and heavy mass of the rear axle assembly, the cylinder 25 can achieve the purpose of smoothly stopping in a horizontal position without being tilted by the rear axle. By setting the stop block 26, when the sliding rod 22 drives the drive frame 3 to be tilted, the drive frame 3 can be stably stopped in an tilted position under the combined action of the cylinder 25 and the sliding rod 22.

[0035] like Figure 4 As shown, the drive frame 3 is equipped with a motor 31. The output end of the motor 31 is coaxially and fixedly connected to the first rotating shaft 4. The motor 31 drives the first rotating shaft 4 to rotate, and the first rotating shaft 4 drives the synchronous belt 42 pulley 41 to rotate, thereby reducing kinetic energy loss and making the transmission smoother when the motor 31 is driven.

[0036] like Figure 1 , Figure 2 As shown, the second rotating shaft 51 is coaxially provided with a driving wheel 512, and the third rotating shaft 61 is coaxially provided with a driven wheel 611. Both the driving wheel 512 and the driven wheel 611 are pulleys and are connected by a belt 612.

[0037] like Figure 1 , Figure 2 As shown, the radius of the driving wheel 512 is smaller than the radius of the driven wheel 611. By connecting the driving wheel 512 and the driven wheel 611 via a belt 612, the same direction of transmission can be achieved. By setting the radius of the driven wheel 611 to be larger than the radius of the driving wheel 512, the second rotating shaft 51 rotates at the same speed as the first rotating shaft 4, and the third rotating shaft 61 rotates at a speed lower than the second rotating shaft 51, the horizontal movement speed of the rear axle is greater than the horizontal movement speed of the lifting device 8, so that the lifting device 8 is not completely placed on the drive belt, thus achieving the purpose of stability and adjustability during the installation process.

[0038] like Figure 3 As shown, a first bevel gear 613 is provided at the end of the third rotating shaft 61, and a second bevel gear 71 is provided at the end of the lead screw 7. The first bevel gear 613 meshes with the second bevel gear 71. By setting the first bevel gear 613 and the second bevel gear 71, the first rotating shaft 4 transmits power to the second rotating shaft 51, the second rotating shaft 51 transmits power to the third rotating shaft 61, and the third rotating shaft 61 transmits power to the lead screw 7 through the meshing of the first bevel gear 613 and the second bevel gear 71. Since the other side of the lifting device 8 is slidably connected to the fixed frame 6, the rotation of the lead screw 7 drives the lifting device 8 to move, thus achieving the purpose of moving the lifting device 8 on the fixed frame 6.

[0039] like Figure 3 As shown, the lifting device 8 is configured as a liftable structure. By configuring the lifting device 8 as a liftable structure, such as the lead screw 7 nut transmission mechanism, hydraulic lifting mechanism, gear and rack transmission mechanism, etc., the purpose of installation can be achieved for rear axles of different lengths.

[0040] like Figure 2 As shown, the mounting platform 9 has a guide groove 91. A clamping plate 911 for fixing the gearbox housing is slidably connected to the mounting platform 9 via the guide groove 91. A bolt 912 is threaded onto the mounting platform 9, and the end of the bolt 912 is fixedly connected to the clamping plate 911. A handwheel 913 is provided at the end of the bolt 912 away from the clamping plate 911. By using the clamping plates 911, for gearbox housings of different widths, manually rotating the bolt 912 controls the width of the clamping plates 911 on both sides, thus fixing the housing between the clamping plates 911, achieving the purpose of fixing gearbox housings of different widths.

Claims

1. A tractor transmission rear axle assembly flip-over hoist structure, characterized in that: The system includes a frame (1), a steering component (2) mounted on the frame (1), a drive frame (3) fixedly connected to the steering component (2), two first rotating shafts (4) rotatably connected to the drive frame (3), a mounting platform (9) for fixing the gearbox housing on the frame (1), the mounting platform (9) being opposite to the drive frame (3), a timing belt (42) pulley (41) coaxially fixedly connected to the first rotating shaft (4), the two timing belt (42) pulleys (41) being connected by a timing belt (42), a drive gear (43) being provided at the end of the first rotating shaft (4), and the frame (1) being located between the mounting platform (9) and the drive frame. (3) A fixed column (5) is provided between them. A second rotating shaft (51) is rotatably connected to the fixed column (5). A driven gear (511) is coaxially provided on the second rotating shaft (51). A fixed frame (6) is horizontally fixed at the top of the fixed column (5). A third rotating shaft (61) is rotatably connected to the fixed frame (6). The second rotating shaft (51) and the third rotating shaft (61) are linked together. A lead screw (7) is rotatably connected to the fixed frame (6). The third rotating shaft (61) controls the rotation of the lead screw (7). A lifting device (8) for lifting the rear axle assembly is threadedly connected to the lead screw (7). The other side of the lifting device (8) is slidably connected to the fixed frame (6).

2. A tractor transmission rear axle assembly flip-over hoist structure according to claim 1, characterized in that: The steering component (2) includes a steering rod (21) rotatably connected to the frame (1), a slide rod (22) slidably connected to the bottom end of the frame (1), a connecting rod (23) hinged to the end of the slide rod (22), a fixed vertical connection between the end of the connecting rod (23) away from the slide rod (22) and the drive frame (3), and a hinge between the end of the steering rod (21) away from the frame (1) and the middle of the connecting rod (23).

3. The tractor gearbox rear axle assembly tilting hanger structure according to claim 2, characterized in that: The bottom end of the frame (1) is provided with a sliding sleeve (24) for sliding the slide rod (22). A cylinder (25) is connected between the slide rod (22) and the mounting platform (9). The cylinder body of the cylinder (25) is fixedly connected to the bottom end of the mounting platform (9), and the piston of the cylinder (25) is fixedly connected to the end of the slide rod (22). A stop block (26) is provided at the bottom of the end of the frame (1) away from the mounting platform (9). The stop block (26) intersects with the movement trajectory of the slide rod (22).

4. The tractor gearbox rear axle assembly tiltable lifting device (8) structure according to claim 1, characterized in that: The drive frame (3) is equipped with a motor (31), and the output end of the motor (31) is coaxially and fixedly connected to the first rotating shaft (4).

5. The tractor gearbox rear axle assembly tilting hoist structure according to claim 1, characterized in that: The second rotating shaft (51) is coaxially provided with a driving wheel (512), and the third rotating shaft (61) is coaxially provided with a driven wheel (611). The driving wheel (512) and the driven wheel (611) are both set as pulleys and connected by a belt (612).

6. The tractor gearbox rear axle assembly tilting hoist structure according to claim 5, characterized in that: The radius of the driving wheel (512) is smaller than the radius of the driven wheel (611).

7. The tractor gearbox rear axle assembly tilting hoist structure according to claim 1, characterized in that: The third rotating shaft (61) is provided with a first bevel gear (613) at its end, and the lead screw (7) is provided with a second bevel gear (71) at its end. The first bevel gear (613) meshes with the second bevel gear (71).

8. The tractor gearbox rear axle assembly tilting hoist structure according to claim 1, characterized in that: The lifting device (8) is configured to be liftable.

9. A tractor gearbox rear axle assembly tilting hoist structure according to claim 1, characterized in that: The mounting platform (9) has a guide groove (91), and the mounting platform (9) is slidably connected to a clamp (911) for fixing the gearbox housing through the guide groove (91). The mounting platform (9) is threaded with a bolt (912), and the end of the bolt (912) is fixedly connected to the clamp (911).

10. A tractor gearbox rear axle assembly tilting hoist structure according to claim 9, characterized in that: A handwheel (913) is provided at the end of the bolt (912) away from the clamp (911).

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