Single-cylinder small tractor lifting system power transmission mechanism

Abstract

This utility model belongs to the field of small tractor technology, and in particular to a power transmission mechanism for a single-cylinder small tractor lifting system. It includes a small trailer frame, on which are mounted an engine, gearbox, lifting pump, hydraulic steering pump, and generator. The power of the lifting pump is directly derived from the engine pulley, avoiding the influence of the clutch pulley on the clutch pulley shaft on the continuity of its movement. The power of the hydraulic steering pump on the front axle comes from the lifting pump pulley of the lifting pump, and the power of the generator comes from the hydraulic steering pump pulley of the front axle. The lifting pump, hydraulic steering pump, and generator are connected in series, resulting in a simple, compact, and ingenious structure. The lifting pump, hydraulic steering pump, and generator, along with their power transmission systems, are all mounted on a dual-pump support, each with its own independent belt tensioning structure. The dual-pump support is mounted on the small trailer frame, and all components are bolted together. Removing any one structure does not affect the use of the others.

Description

Technical Field

[0001] This utility model belongs to the field of small tractor technology, specifically relating to a power continuity mechanism for a single-cylinder small tractor lifting system. Background Technology

[0002] Small tractors, also known as mini tractors, are primarily used for transporting goods by towing a trailer. They can also serve as power platforms for agricultural machinery such as loaders, ditchers, and harrows. The hydraulic lifting system of a small tractor can be used to raise and lower the equipment mounted on the trailer, such as for operating implements and controlling tillage depth.

[0003] The existing small tractor top-lift system structure is as follows: Figure 1 As shown, the current method involves drawing power from the diesel engine pulley 12 via the clutch drive belt 14, transmitting it through the clutch pulley 4 to the clutch pulley shaft 2, and then through the clutch pulley shaft 2 to the lift pump 9. The lift pump 9 is a gear pump with a left end cover 19 on the left side of the gearbox. The clutch pulley shaft 2 is connected to the lift pump 9 via a lift separator 20, thus enabling the clutch pulley shaft 2 to drive the lift pump and provide power for the hydraulic lifting equipment. This traditional power transmission structure places the power of the lift pump at the rear end of the clutch pulley 4; when the clutch is depressed, the power to the lift pump 9 is interrupted, which is unsuitable for the dedicated lifting power requirements of modern small tractors. Utility Model Content

[0004] The present invention aims to provide a power continuity mechanism for a single-cylinder small tractor lifting system, so as to realize the continuous drive of the lifting pump through the power continuity mechanism of the single-cylinder small tractor lifting system, and avoid the interruption of the lifting pump power due to pressing the clutch.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A power-connected mechanism for a single-cylinder small trailer lifting system is provided, including a small trailer frame. The small trailer frame is equipped with an engine, a gearbox, a lift pump, a hydraulic steering pump, and a generator. The engine pulley is connected to the clutch pulley of the gearbox via a clutch drive belt. The lift pump, hydraulic steering pump, and generator are respectively equipped with lift pump pulleys, hydraulic steering pump pulleys, and generator pulleys. The engine pulley is directly connected to the lift pump pulley via the lift pump drive belt. The lift pump pulley is connected to the hydraulic steering pump pulley via the hydraulic steering pump belt. The hydraulic steering pump pulley is connected to the generator pulley via the generator belt.

[0007] Preferably, a dual-pump support is provided on the small trailer frame on one side of the engine pulley, and the lift pump, hydraulic steering pump and generator are mounted on the dual-pump support.

[0008] Preferably, the inner side of the dual-pump support is provided with a first screw hole for connecting the small trailer frame, and the outer side is provided with a second screw hole for connecting the lift pump and the hydraulic steering pump. The first screw hole is a transverse elongated hole, and the second screw hole is a longitudinal elongated hole.

[0009] Preferably, the left side of the dual pump support is provided with a generator clamp plate, the upper and lower ends of which are respectively provided with an upper adjustment hole and a lower pin hole for mounting the generator. The lower side of the generator is hinged in the lower pin hole through the lower pin. The upper side of the engine is hinged with a generator belt adjustment plate, and the upper side of the generator belt adjustment plate is provided with an elongated hole for connecting the upper adjustment hole.

[0010] Preferably, the engine pulley is a five-groove pulley, the engine pulley is connected to the clutch pulley via four clutch drive belts, and the engine pulley is connected to the lift pump pulley via a lift pump drive belt.

[0011] Preferably, the clutch pulley shaft end in the gearbox is sealed with a cap.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The power of the booster pump is directly drawn from the engine pulley, avoiding the influence of the clutch pulley on the clutch pulley shaft on its motion continuity.

[0014] 2. The power of the hydraulic steering pump of the front axle comes from the lift pump pulley of the lift pump, and the power of the generator comes from the hydraulic steering pump pulley of the hydraulic steering pump of the front axle. The power of the lift pump, the hydraulic steering pump and the generator are connected in series, and the structure is simple, compact and ingenious.

[0015] 3. The lift pump, hydraulic steering pump, and generator, along with their power transmission systems, are all mounted on the dual-pump support base. Each has its own independent belt tensioning structure. The dual-pump support base is mounted on the small trailer frame. All components are bolted together, and removing any one structure will not affect the use of the other structures.

[0016] 4. The generator uses a lower pin, an upper pin, and a generator belt adjusting plate, which are mounted on the double pump support and can rotate around the lower pin. The tension of the belt is adjusted through the elongated hole on the motor belt adjusting plate.

[0017] 5. A cap is installed at the end of the clutch pulley shaft, while the structure of the clutch pulley shaft remains unchanged. This allows the traditional transmission structure of placing the pump behind the clutch pulley shaft to be restored, thus meeting the different needs of different users. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the existing small tractor lifting system.

[0020] Figure 2 This is a side view of an embodiment of the power transmission mechanism of the single-cylinder small tractor lifting system of this utility model.

[0021] Figure 3 This is a top view structural diagram of an embodiment of the power connection mechanism of the single-cylinder small tractor lifting system of this utility model.

[0022] Figure 4 This is a side view of the dual-pump support base in one embodiment of the power connection mechanism of the single-cylinder small tractor lifting system of this utility model.

[0023] Figure 5 This is a top view of the dual-pump support base in one embodiment of the power connection mechanism of the single-cylinder small tractor lifting system of this utility model.

[0024] In the diagram, the labels represent: 1. Gearbox; 2. Clutch pulley shaft; 3. Clutch release pawl; 4. Clutch pulley; 5. Generator; 6. Generator pulley; 7. Dual pump support; 7-1. First screw hole; 7-2. Second screw hole; 7-3. Generator clamp; 7-3-1. Upper adjustment hole; 7-3-2. Lower pin hole; 7-4. Generator belt adjustment plate; 8. Hydraulic steering pump; 9. Lift pump; 10. Lift pump bearing assembly; 10A. Hydraulic steering pump bearing assembly; 11. Lift pump pulley; 11A. Hydraulic steering pump pulley; 12. Engine pulley; 13. Small trailer frame; 14. Clutch drive belt; 15. Generator drive belt; 16. Hydraulic steering pump belt; 17. Lift pump drive belt; 18. Left end cover; 19. Left end cover; 20. Lift separator; 21. Engine; 22. Lower pin; 23. Upper pin. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In one embodiment, a power-coordinated mechanism for a single-cylinder small tractor lifting system is provided, such as... Figure 2-3As shown, the power transmission mechanism of the single-cylinder small trailer lifting system includes a small trailer frame 13. The small trailer frame 13 is equipped with an engine 21, a gearbox 1, a lifting pump 9, a hydraulic steering pump 8, and a generator 5. The small trailer frame 13 serves as a support. The engine 21 is a diesel engine that transmits power to the gearbox 1, which drives the wheels on the small trailer frame 13. The lifting pump 9 provides lifting power for the lifting equipment installed on the gearbox 1. The hydraulic steering pump 8 assists in steering. The generator 5 can charge the battery of the small trailer.

[0027] The engine pulley 12 of engine 21 is connected to the clutch pulley 4 of gearbox 1 via clutch drive belt 14. The clutch release pawl 3 can be driven by pressing the clutch pedal, thereby engaging or disengaging the clutch pulley 4. The lift pump 9, hydraulic steering pump 8, and generator 5 are respectively equipped with lift pump pulley 11, hydraulic steering pump pulley 11A, and generator pulley 6. Each of these pulleys is mounted on its respective shaft. The engine pulley 12 is directly connected to the lift pump pulley 11 via lift pump drive belt 17, allowing engine 21 to continuously drive the lift pump 9 without being affected by clutch pulley 4, preventing power disconnection from the lift pump 9 when the clutch pedal is pressed. The lift pump pulley 11 is connected to the hydraulic steering pump pulley 11A via hydraulic steering pump belt 16, and the hydraulic steering pump pulley 11A is connected to the generator pulley 6 via generator belt 15.

[0028] Furthermore, such as Figure 2-5 As shown, a dual-pump support 7 is provided on the small trailer frame 13 on one side of the engine pulley 12. The lift pump 9, hydraulic steering pump 8, and generator 5 are mounted on the dual-pump support 7. By providing the dual-pump support 7, mounting positions for the lift pump 9, hydraulic steering pump 8, and generator 5 can be provided on the small trailer frame 13 on one side of the engine pulley 12. Figure 4-5 As shown, the inner side of the dual-pump support 7 has three first screw holes 7-1 for connecting to the small trailer frame 13. The small trailer frame 13 has corresponding screw holes. The dual-pump support 7 is fixed to the small trailer frame 13 by bolts passing through the first screw holes 7-1. The outer side of the dual-pump support 7 has three second screw holes 7-2 for connecting the lift pump 9 and the hydraulic steering pump 8. The middle second screw hole 7-2 is longer and is shared by both pumps. The first screw hole 7-1 is a transverse elongated hole to adjust the installation position of the dual-pump support 7. The second screw hole 7-2 is a longitudinal elongated hole to adjust the installation position of the two pumps, thereby adjusting the belt tension. On the left side of the dual-pump support 7, there is a generator clamp plate 7-3. The upper and lower ends of the generator clamp plate 7-3 are respectively provided with an upper adjustment hole 7-3-1 and a lower pin hole 7-3-2 for installing the generator. Figure 2As shown, the lower side of the generator 5 housing is hinged to the lower pin hole 7-3-2 via the lower pin 22, and the upper side of the generator 5 housing is hinged to the generator belt adjustment plate 7-4 via the upper pin 23. The upper side of the generator belt adjustment plate 7-4 is provided with an elongated hole for connecting the upper adjustment hole 7-3-1, so that the installation position of the generator 5 can be adjusted and the tension of the generator adjustment belt 15 can be adjusted.

[0029] like Figure 3 As shown, the lift pump bearing housing assembly 10 of the lift pump 9 is bolted to the second threaded hole 7-2 on the right side, and the hydraulic steering pump bearing housing assembly 10A of the hydraulic steering pump 8 is bolted to the second threaded hole 7-2 on the left side. One of the middle second threaded holes is shared. The lift pump pulley 11 is mounted in the lift pump bearing housing assembly 10 via a shaft with internal splines and two bearings. The front flange of the lift pump 9 is bolted to the lift pump bearing housing assembly 10, and the shaft of the lift pump 9 is connected to the shaft of the lift pump pulley 11 via internal splines. The hydraulic steering pump pulley 11A is mounted in the hydraulic steering pump bearing housing assembly 10A via a shaft with internal splines and two bearings. The front flange of the hydraulic steering pump 8 is bolted to the hydraulic steering pump bearing housing assembly 10A, and the shaft of the hydraulic steering pump 8 is connected to the shaft of the hydraulic steering pump pulley 11A via internal splines.

[0030] Furthermore, in combination Figure 3 As shown, the engine pulley 12 is a five-groove pulley, which means that five belts can be fitted on it. Since the gearbox 1 requires a large torque, while the lift pump 9, hydraulic steering pump 8 and generator 5 require a smaller torque, the engine pulley 12 is connected to the clutch pulley 4 through four clutch drive belts 14, and the engine pulley 12 is connected to the lift pump pulley 11 through one lift pump drive belt 17.

[0031] Furthermore, such as Figure 3 As shown, the end of the clutch pulley shaft 2 in the gearbox 1 is closed by a cover 18. After the cover 18 is changed to a transparent cover, the booster pump can also be installed here and driven by the clutch pulley shaft to meet the needs of different users.

[0032] The working process of the power transmission mechanism of the single-cylinder small tractor lifting system is as follows: Power comes from the engine 21, which is transmitted to the clutch pulley 4 via the engine pulley 12 and the clutch drive belt 14, and then drives the clutch pulley shaft 2; the power is transmitted to the lifting pump pulley 11 via the lifting pump drive belt 17 through the engine pulley 12, and the lifting pump pulley 11 transmits power to the lifting pump 9 through the internal spline structure in the lifting pump bearing housing assembly 10, driving the lifting pump 9; the lifting pump pulley 11 transmits power to the hydraulic steering pump pulley 11A via the hydraulic steering pump belt 16, and the hydraulic steering pump pulley 11A transmits power to the hydraulic steering pump 8 through the internal spline structure of the hydraulic steering pump bearing housing assembly 10A.

[0033] Compared with the current power transmission method, the single-cylinder small trailer lifting system has the following advantages: (1) The power of the lifting pump 9 is directly drawn from the engine pulley 12, avoiding the influence of the clutch pulley 4 on the clutch pulley shaft 2 on its motion continuity. (2) The power of the hydraulic steering pump 8 of the front axle comes from the lifting pump pulley 11 of the lifting pump, and the power of the generator 5 comes from the hydraulic steering pump pulley 11A of the hydraulic steering pump 8 of the front axle. The power of the lifting pump 9, the hydraulic steering pump 8, and the generator 5 are connected in series, and the structure is simple, compact and ingenious. (3) The three devices, the lifting pump 9, the hydraulic steering pump 8, and the generator 5, and their power transmission systems are all installed on the double pump support 7, each with its own belt tensioning structure. The double pump support 7 is installed on the small trailer frame 13, and all components are bolted together. Removing any one structure will not affect the use of the other structures. (4) The generator 5 is mounted on the double pump support 7 using the lower pin 22, the upper pin 23 and the generator belt adjusting plate 7-4, and can rotate around the lower pin 22. The tension of the belt is adjusted through the elongated hole on the motor belt adjusting plate 7-4. (5) A cap is provided at the end of the clutch pulley shaft 2. The structure of the clutch pulley shaft 2 remains unchanged, so that the traditional transmission structure of the pump rear is placed on the clutch pulley shaft 2 can be restored to meet the different needs of different users.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power-connecting mechanism for a single-cylinder small trailer lifting system, comprising a small trailer frame, wherein an engine, a gearbox, a lifting pump, a hydraulic steering pump, and a generator are mounted on the small trailer frame, and the engine pulley is connected to the clutch pulley of the gearbox via a clutch drive belt, characterized in that: The lift pump, hydraulic steering pump, and generator are respectively equipped with lift pump pulley, hydraulic steering pump pulley, and generator pulley. The engine pulley is directly connected to the lift pump pulley via the lift pump drive belt. The lift pump pulley is connected to the hydraulic steering pump pulley via the hydraulic steering pump belt. The hydraulic steering pump pulley is connected to the generator pulley via the generator belt.

2. The power transmission mechanism of the single-cylinder small tractor lifting system according to claim 1, characterized in that: A dual-pump support is provided on the small trailer frame on one side of the engine pulley, and the lift pump, hydraulic steering pump and generator are mounted on the dual-pump support.

3. The power transmission mechanism of the single-cylinder small tractor lifting system according to claim 2, characterized in that: The inner side of the dual-pump support is provided with a first screw hole for connecting the small trailer frame, and the outer side is provided with a second screw hole for connecting the lifting pump and the hydraulic steering pump. The first screw hole is a transverse elongated hole, and the second screw hole is a longitudinal elongated hole.

4. The power transmission mechanism of the single-cylinder small tractor lifting system according to claim 3, characterized in that: The left side of the dual-pump support is provided with a generator clamp plate. The upper and lower ends of the generator clamp plate are respectively provided with an upper adjustment hole and a lower pin hole for mounting the generator. The lower side of the generator is hinged to the lower pin hole through the lower pin. The upper side of the engine is hinged with a generator belt adjustment plate. The upper side of the generator belt adjustment plate is provided with an elongated hole for connecting the upper adjustment hole.

5. The power transmission mechanism for the single-cylinder small tractor lifting system according to claim 1, characterized in that: The engine pulley is a five-groove pulley. The engine pulley is connected to the clutch pulley via four clutch drive belts. The engine pulley is connected to the lift pump pulley via a lift pump drive belt.

6. The power transmission mechanism of the single-cylinder small tractor lifting system according to claim 1, characterized in that: The clutch pulley shaft in the gearbox is sealed at its end by a cap.

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