A suspension transmission system of a beating and rotary tillage integrated machine

Abstract

The utility model relates to a kind of beating and rotary tillage integrated machine's suspension transmission system, comprising: rack, input shaft mounting seat being installed in one end of rack, gearbox being installed in the other end of rack, flange shaft being rotatably connected on input shaft mounting seat, transmission belt being connected with the input shaft of gearbox of flange shaft, and hydraulic tensioner for tensioning transmission belt, one end of flange shaft is fixedly connected on the inner ring of connecting disc by universal joint, connecting disc outer ring is fixedly connected with the flywheel of engine, input end pulley is sleeved on flange shaft, output end pulley is sleeved on gearbox input shaft, transmission belt is sleeved on input end pulley and output end pulley, engine passes through flywheel and power transmission is given to flange shaft, flange shaft passes through transmission belt and power transmission is given to gearbox, the output shaft of gearbox is as suspension transmission system output end and provides power for beating machine or rotary tillage machine.The utility model has the advantages of improving the stability and transmission efficiency of suspension transmission system and reducing failure rate.

Description

Technical Field

[0001] This utility model relates to the technical field of suspension transmission systems, and in particular to a suspension transmission system for a harvester converted into a rotary tiller. Background Technology

[0002] After a harvester reaches a certain service life, its harvesting and threshing systems are prone to severe wear and tear, reaching a point where repair is either impossible or economically unfeasible, leading to their obsolescence. However, the core power and walking systems (engine, gearbox, and drive mechanism) often remain in good working condition, and direct disposal would result in significant resource waste. Therefore, in recent years, various modified suspension systems for harvesters to be converted into rotary tillers have emerged on the market. However, existing transmission suspension systems generally suffer from the following common drawbacks: 1. Belt drives are prone to slippage and burnout; 2. The universal joint cross bearings experience accelerated wear and have a short service life; 3. While existing floating suspension systems can avoid the wear problem of the drive shaft cross bearings, they cannot achieve speed change functionality, limiting their application scenarios; and suspension systems with speed change capabilities struggle to solve the dual problems of belt slippage and burnout, as well as severe wear of the cross bearings. Utility Model Content

[0003] In view of the above problems, the purpose of this utility model is to provide a suspension transmission system for a rotary tiller that improves the stability and transmission efficiency of the suspension transmission system and reduces the failure rate, so as to overcome the shortcomings of the prior art.

[0004] This utility model provides a suspension transmission system for an integrated pulping and rotary tiller, comprising: a frame, an input shaft mounting base installed at one end of the frame, a gearbox installed at the other end of the frame, a flange shaft rotatably connected to the input shaft mounting base, a transmission belt connecting the flange shaft and the gearbox input shaft, and a hydraulic tensioner for tightening the transmission belt. One end of the flange shaft is fixedly connected to the inner ring of a connecting plate via a ball joint, and the outer ring of the connecting plate is fixedly connected to the flywheel of the engine. An input pulley is mounted on the flange shaft, and an output pulley is mounted on the gearbox input shaft. The transmission belt is mounted on the input pulley and the output pulley. The engine transmits power to the flange shaft via the flywheel, and the flange shaft transmits power to the gearbox via the transmission belt. The output shaft of the gearbox serves as the output end of the suspension transmission system, providing power to the pulper or rotary tiller.

[0005] As a preferred embodiment of this invention, the ball cage universal joint includes a fixed ball cage universal joint and / or a sliding ball cage universal joint. The flange shaft is connected to the connecting plate via the ball cage universal joint and / or the sliding ball cage universal joint. The sliding ball cage universal joint is used to adjust the constant velocity torque transmission, angle compensation, and axial slip compensation between the connecting plate and the flange shaft. In this embodiment, the constant velocity torque transmission, angle compensation, and axial slip compensation between the connecting plate and the flange shaft are achieved by combining the ball cage universal joint and the sliding ball cage universal joint.

[0006] As a preferred embodiment of this utility model, the hydraulic tensioner includes: a tensioning wheel adjusting cylinder and an L-shaped bracket hinged to the frame. The tail end of the tensioning wheel adjusting cylinder is hinged to the frame, and the bent portion of the L-shaped bracket is hinged to the frame. The piston rod of the tensioning wheel adjusting cylinder is hinged to one end of the L-shaped bracket. A bearing seat extending towards the transmission belt is installed at the other end of the L-shaped bracket. A tensioning wheel is rotatably connected to the bearing seat and rests on the transmission belt. A return spring is connected between the piston rod end and the cylinder body of the tensioning wheel adjusting cylinder. The return spring assists the piston rod in returning to its original position. The tensioning wheel adjusting cylinder pushes the L-shaped bracket through the piston rod, and the L-shaped bracket drives the tensioning wheel to rest on the transmission belt for tension adjustment.

[0007] As a preferred embodiment of this utility model, the frame is equipped with a telescopic adjustment mechanism for controlling the telescopic amount of the piston rod of the tension wheel adjusting cylinder. The telescopic adjustment mechanism includes: a guide seat mounted on the frame, a threaded hole opened on the guide seat, and a bolt push rod threaded into the threaded hole and arranged along the telescopic path of the piston rod. The holding end of the bolt push rod contacts the end of the piston rod of the tension wheel adjusting cylinder, and the end point of the stroke of the piston rod of the tension wheel adjusting cylinder is the holding end position of the bolt push rod.

[0008] As a preferred embodiment of this invention, the bottom of the input shaft mounting base is connected to a strip-shaped adjustment hole on the frame via bolts.

[0009] As a preferred embodiment of this invention, a tapered sleeve pulley is fitted on the flange shaft. The tapered sleeve pulley includes a tapered sleeve fixed to the flange shaft and an input end pulley fitted on the tapered sleeve. The tapered sleeve is fixed to the flange end bolt of the flange shaft by bolts, and the input end pulley is fixed to the tapered sleeve by bolts. The transmission belt is fitted on the input end pulley. The speed of the transmission belt can be adjusted by replacing the input end pulleys of different diameters.

[0010] As a preferred embodiment of this utility model, an integrated bearing bracket is installed on the input shaft mounting base, and the flange shaft is rotatably connected to the input shaft mounting base through the integrated bearing bracket.

[0011] As a preferred embodiment of this invention, the gearbox is mounted on the frame via bearing seats or bearing brackets on both sides;

[0012] When the gearbox is mounted on the frame via a bearing seat, a circular shell wall extends from the side of the gearbox. The gearbox is rotatably connected to the mounting hole of the bearing seat via the circular shell wall. A bearing seat retaining ring is provided on the outer side of the circular shell wall, and the bearing seat retaining ring is fixed to the housing by bolts. The bearing seat is used to support the gearbox and to allow the gearbox to swing along the output shaft direction.

[0013] When the gearbox is mounted on the frame via a bearing housing, a rotating shaft is fixed to the housing of the gearbox, and the rotating shaft is mounted on the frame via the bearing housing.

[0014] As a preferred embodiment of this utility model, the frame is further provided with a hydraulic support mechanism for adjusting the angle of the gearbox on the bearing seat. The hydraulic support mechanism includes: a fine-tuning hydraulic cylinder hinged to the frame, and an adjusting arm hinged to the piston rod of the fine-tuning hydraulic cylinder. The adjusting arm is fixedly connected to the gearbox, or the adjusting arm is fixedly connected to the gearbox via a lifting arm. The piston rod of the fine-tuning hydraulic cylinder drives the adjusting arm, and the adjusting arm drives the gearbox to rotate on the bearing seat, or the adjusting arm drives the gearbox to rotate on the bearing seat via a lifting arm.

[0015] As a preferred embodiment of this utility model, a hydraulic lifting bracket is provided on one end of the frame near the gearbox. The hydraulic lifting bracket includes: two connecting rods hinged to the front end of the frame, and a lifting frame hydraulic cylinder hinged to the frame and driving the connecting rods. The piston rod of the lifting frame hydraulic cylinder is hinged to the connecting rods, and the piston rod of the lifting frame hydraulic cylinder drives the connecting rods to adjust their height on the frame.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The suspension transmission system of this utility model realizes direct connection with the engine, eliminating cumbersome transmission components, improving transmission efficiency and reducing failure rate.

[0018] 2. The flange shaft of this utility model is connected to the connecting plate (engine end) through a ball cage universal joint and a sliding ball cage universal joint, which can realize constant speed torque transmission, angle compensation and axial slip compensation between the engine output shaft and the flange shaft, so as to achieve stable power output in complex terrain and improve service life.

[0019] 3. The flange shaft of this utility model adopts a set of split tapered sleeve pulleys, which can realize belt speed change by replacing the input end pulleys of different diameters, and has the advantage of convenient replacement and disassembly.

[0020] 4. The hydraulic tensioner of this utility model, combined with the telescopic adjustment mechanism, can realize the automatic tensioning of the transmission belt. It has the advantages of easy operation, large tensioning force, and effective prevention of belt slippage when combined with a widened and weighted belt.

[0021] 5. This utility model, through the gearbox rotatably connected to the bearing seat and in conjunction with the hydraulic support mechanism, can realize the follow-up function of the power output shaft, so that the transmission shaft always maintains the ideal working angle and completely solves the problem of wear of the cross bearing of the transmission shaft. Attached Figure Description

[0022] Figure 1 This is one of the overall structural diagrams of this embodiment.

[0023] Figure 2 This is the second schematic diagram of the overall structure of this embodiment.

[0024] Figure 3 This is the third schematic diagram of the overall structure of this embodiment.

[0025] Figure 4 This is the fourth schematic diagram of the overall structure of this embodiment.

[0026] Figure 5 This is the fifth schematic diagram of the overall structure of this embodiment.

[0027] Figure 6 This is a schematic diagram of the cone sleeve and the input end pulley in this embodiment.

[0028] Reference numerals: 1. Frame; 2. Input shaft mounting seat; 3. Gearbox; 4. Flange shaft; 5. Drive belt; 6. Hydraulic tensioner; 7. Universal joint mechanism; 8. Input end pulley; 9. Tapered sleeve; 10. Tensioner adjusting cylinder; 11. L-shaped bracket; 12. Tensioner; 13. Return spring; 14. Guide seat; 15. Bolt top rod; 16. Bearing seat; 17. Bearing seat bracket; 18. Fine-tuning hydraulic cylinder; 19. Adjusting arm; 20. Lifting arm; 21. Linkage bracket; 22. Fixed rotating shaft; 23. Connecting plate; 24. Lifting frame hydraulic cylinder; 25. Detailed Implementation

[0029] See Figure 1-6As shown, this embodiment provides a suspension transmission system for a rotary tiller, including: a frame 1, an input shaft mounting base 2 mounted at one end of the frame 1, a gearbox 3 mounted at the other end of the frame 1, a flange shaft 4 rotatably connected to the input shaft mounting base 2, a transmission belt 5 connecting the flange shaft 4 and the gearbox input shaft, and a hydraulic tensioner 6 for tensioning the transmission belt 5. One end of the flange shaft 4 is fixedly connected to a connecting disc 24 via a universal joint mechanism 7 composed of a ball cage universal joint and a sliding ball cage universal joint. The connecting disc 24 is a circular or square steel disc. The fixing holes on the inner ring of the steel disc are bolted to the sliding ball cage universal joint, and the fixing holes on the outer ring of the steel disc are bolted to the flywheel of the engine. One end of the flange shaft 4 is connected to the ball cage universal joint, and the other end of the flange shaft 4 is connected to the input pulley 8 via a spline. An output pulley 9 is mounted on the gearbox input shaft, and the transmission belt 5 is mounted on the input pulley 8 and the output pulley 9, realizing the power transmission between the flange shaft 4 and the gearbox 3. The universal joint mechanism 7 consists of a ball cage universal joint and a sliding ball cage universal joint connected by a splined shaft. Both the ball cage universal joint and the sliding ball cage universal joint are sealed and protected by dust sleeves. The bottom of the input shaft mounting base 2 is connected to a strip-shaped adjustment hole on the frame 1 via bolts. This strip-shaped adjustment hole allows for fine-tuning of the installation position of the input shaft mounting base 2 on the frame 1. An integrated bearing bracket is mounted on the input shaft mounting base 2, and the flange shaft 4 is rotatably connected to the input shaft mounting base 2 via the integrated bearing bracket. The integrated bearing bracket consists of two bearings, two oil seals, two oil seal bushings, a spacer sleeve, and a support. A tapered sleeve pulley is mounted on the flange shaft 4. The tapered sleeve pulley includes a tapered sleeve 10 fixed to the flange shaft 4 and an input end pulley 8 mounted on the tapered sleeve 10. The tapered sleeve 10 is fixed to the flange end face of the flange shaft 4 by bolts. The input end pulley 8 is fixed to the tapered sleeve 10 by bolts. The transmission belt 5 is mounted on the input end pulley 8. The speed of the transmission belt is adjusted by replacing the input end pulley 8 with different diameters.

[0030] Furthermore, the hydraulic tensioner 6 in this embodiment includes: a tensioning wheel adjusting cylinder 11 and an L-shaped bracket 12 hinged to the frame 1. The tail end of the tensioning wheel adjusting cylinder 11 is hinged to the frame 1. The bent position of the L-shaped bracket 12 is hinged to the frame 1 via a fulcrum bearing seat. The piston rod of the tensioning wheel adjusting cylinder 11 is hinged to one end of the L-shaped bracket 12 via a pin. The other end of the L-shaped bracket 12 is equipped with a bearing seat extending towards the transmission belt 5. A tensioning wheel 13 is rotatably connected to the bearing seat. The tensioning wheel 13 is held against the transmission belt 5. A return spring 14 is connected between the piston rod end and the cylinder body of the tensioning wheel adjusting cylinder. The return spring 14 is used to assist the piston rod in returning to its original position. The tensioning wheel adjusting cylinder pushes the L-shaped bracket 12 through the piston rod. The L-shaped bracket 12 drives the tensioning wheel 13 to hold the transmission belt 5 for tension adjustment.

[0031] Furthermore, in this embodiment, the frame 1 is equipped with a telescopic adjustment mechanism for controlling the extension and retraction of the piston rod of the tension wheel adjusting cylinder 11. The telescopic adjustment mechanism includes: a guide seat 15 mounted on the frame and located on the integrated bearing housing, a threaded hole opened on the guide seat 15, and a bolt push rod 16 threadedly connected in the threaded hole and arranged along the extension and retraction path of the piston rod. The holding end of the bolt push rod 16 contacts the end of the piston rod of the tension wheel adjusting cylinder 11, and the end point of the stroke of the piston rod of the tension wheel adjusting cylinder 11 is the holding end position of the bolt push rod 16.

[0032] Furthermore, in this embodiment, the gearbox 3 is mounted on the frame 1 via a bearing seat 17 on one side and a bearing bracket 18 on the other side. The gearbox 3 has a circular shell wall extending from one side of the bearing seat 17. The gearbox 3 is rotatably connected to the mounting hole of the bearing seat 17 via the circular shell wall. A bearing seat retaining ring is provided on the outer side of the circular shell wall of the bearing seat 17. The bearing seat retaining ring is fixed to the housing by bolts. A fixed shaft 23 is fixedly connected to one side of the bearing bracket 18. The gearbox 3 is rotatably connected to the bearing bracket 18 via the fixed shaft. The bearing bracket 18 and the bearing seat 17 are used to support the gearbox 3 and to enable the gearbox 3 to swing along the output shaft direction. The frame 1 is also equipped with a hydraulic support mechanism for adjusting the angle of the gearbox 3 on the bearing seat 17. The hydraulic support mechanism includes: a fine-tuning hydraulic cylinder 19 hinged to the frame 1, and an adjusting arm 20 hinged to the piston rod of the fine-tuning hydraulic cylinder 19. The adjusting arm 20 is fixedly connected to the housing of the gearbox 3 via a lifting arm 21. The piston rod of the fine-tuning hydraulic cylinder 19 drives the adjusting arm 20, which in turn drives the gearbox 3 to rotate on the bearing seat 17. Since the output shaft of the gearbox 3 is connected to the input shaft of the pulper or rotary tiller via a splined shaft, the adjustable output shaft of the gearbox 3 ensures the ideal working angle of the transmission shaft, avoiding wear.

[0033] Furthermore, in this embodiment, a hydraulic lifting bracket is provided on one end of the frame 1 near the gearbox 3. The hydraulic lifting bracket includes two connecting rods 22 hinged to the front end of the frame 1, and a lifting frame hydraulic cylinder 25 hinged to the frame 1 and driving the connecting rods 22. The piston rod of the lifting frame hydraulic cylinder 25 is hinged to the connecting rods 22. The piston rod of the lifting frame hydraulic cylinder 25 drives the connecting rods 22 to adjust the height on the frame 1. In this embodiment, the lifting frame hydraulic cylinder 25 on one side shares a hydraulic cylinder with the fine-tuning hydraulic cylinder 19.

[0034] Working principle: Constant speed torque transmission, angle compensation, and axial slip compensation are achieved between the connecting plate 24 and the flange shaft 4 through a combination of ball joint and sliding ball joint. The engine transmits power to the flange shaft 4 through the flywheel and connecting plate 24. The flange shaft 4 transmits power to the gearbox 3 through the transmission belt 5. The output shaft of the gearbox 3 serves as the output end of the suspension transmission system, providing power to the pulper or rotary tiller.

[0035] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A suspension transmission system for a rotary tiller, characterized in that, include: The machine comprises a frame, an input shaft mounting base at one end of the frame, a gearbox at the other end of the frame, a flange shaft rotatably connected to the input shaft mounting base, a drive belt connecting the flange shaft and the gearbox input shaft, and a hydraulic tensioner for tightening the drive belt. One end of the flange shaft is fixed to the inner ring of a connecting plate via a ball joint, and the outer ring of the connecting plate is fixed to the flywheel of the engine. An input pulley is mounted on the flange shaft, and an output pulley is mounted on the gearbox input shaft. The drive belt is mounted on both the input and output pulleys. The engine transmits power to the flange shaft via the flywheel, and the flange shaft transmits power to the gearbox via the drive belt. The output shaft of the gearbox serves as the output end of the suspension transmission system, providing power to the pulper or rotary tiller.

2. The suspension transmission system of the rotary tiller according to claim 1, characterized in that, The ball cage universal joint includes a fixed ball cage universal joint and / or a sliding ball cage universal joint. The flange shaft is connected to the connecting plate through the fixed ball cage universal joint and / or the sliding ball cage universal joint. The sliding ball cage universal joint is used to adjust the constant velocity torque transmission, angle compensation and axial slip compensation between the connecting plate and the flange shaft.

3. The suspension transmission system of the rotary tiller according to claim 1, characterized in that, The hydraulic tensioner includes: a tensioning wheel adjusting cylinder and an L-shaped bracket hinged to the frame. The tail end of the tensioning wheel adjusting cylinder is hinged to the frame, and the bent portion of the L-shaped bracket is hinged to the frame. The piston rod of the tensioning wheel adjusting cylinder is hinged to one end of the L-shaped bracket. A bearing seat extending towards the drive belt is installed at the other end of the L-shaped bracket. A tensioning wheel is rotatably connected to the bearing seat and rests on the drive belt. A return spring is connected between the piston rod end and the cylinder body of the tensioning wheel adjusting cylinder. The return spring assists the piston rod in returning to its original position. The tensioning wheel adjusting cylinder pushes the L-shaped bracket through the piston rod, and the L-shaped bracket drives the tensioning wheel to rest on the drive belt for tension adjustment.

4. The suspension transmission system of the rotary tiller according to claim 3, characterized in that, The frame is equipped with a telescopic adjustment mechanism for controlling the extension and retraction of the piston rod of the tension wheel adjusting cylinder. The telescopic adjustment mechanism includes: a guide seat mounted on the frame, a threaded hole on the guide seat, and a bolt push rod threaded into the threaded hole and arranged along the extension and retraction path of the piston rod. The holding end of the bolt push rod contacts the end of the piston rod of the tension wheel adjusting cylinder, and the end point of the stroke of the piston rod of the tension wheel adjusting cylinder is the holding end position of the bolt push rod.

5. The suspension transmission system of the rotary tiller according to claim 1, characterized in that, The bottom of the input shaft mounting base is connected to the strip-shaped adjustment hole on the frame by bolts.

6. The suspension transmission system of the rotary tiller according to claim 1, characterized in that, A tapered sleeve pulley is fitted on the flange shaft. The tapered sleeve pulley includes a tapered sleeve fixed to the flange shaft and an input end pulley fitted on the tapered sleeve. The tapered sleeve is fixed to the flange end of the flange shaft by bolts. The input end pulley is fixed to the tapered sleeve by bolts. The transmission belt is fitted on the input end pulley. The speed of the transmission belt is adjusted by replacing the input end pulleys of different diameters.

7. The suspension transmission system of the rotary tiller according to claim 1, characterized in that, A bearing bracket is mounted on the input shaft mounting base, and the flange shaft is rotatably connected to the input shaft mounting base via the bearing bracket.

8. The suspension transmission system of the rotary tiller according to claim 1, characterized in that, The gearbox is mounted on the frame via bearing mounts or bearing brackets on both sides; When the gearbox is mounted on the frame via a bearing seat, a circular shell wall extends from the side of the gearbox. The gearbox is rotatably connected to the mounting hole of the bearing seat via the circular shell wall. A bearing seat retaining ring is provided on the outer side of the circular shell wall, and the bearing seat retaining ring is fixed to the housing by bolts. When the gearbox is mounted on the frame via a bearing housing, a rotating shaft is fixed to the housing of the gearbox, and the rotating shaft is mounted on the frame via the bearing housing.

9. The suspension transmission system of the rotary tiller according to claim 8, characterized in that, The frame is also equipped with a hydraulic support mechanism for adjusting the angle of the gearbox on the bearing seat. The hydraulic support mechanism includes: a fine-tuning hydraulic cylinder hinged to the frame and an adjusting arm hinged to the piston rod of the fine-tuning hydraulic cylinder. The adjusting arm is fixedly connected to the gearbox, or the adjusting arm is fixedly connected to the gearbox via a lifting arm. The piston rod of the fine-tuning hydraulic cylinder drives the adjusting arm, and the adjusting arm drives the gearbox to rotate on the bearing seat, or the adjusting arm drives the gearbox to rotate on the bearing seat via the lifting arm.

10. The suspension transmission system of the rotary tiller according to claim 1, characterized in that, A hydraulic lifting bracket is provided on one end of the frame near the gearbox. The hydraulic lifting bracket includes two connecting rods hinged to the front end of the frame and a lifting frame hydraulic cylinder hinged to the frame and driving the connecting rods. The piston rod of the lifting frame hydraulic cylinder is hinged to the connecting rods, and the piston rod of the lifting frame hydraulic cylinder drives the connecting rods to adjust their height on the frame.

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