Cultivator type narrow-tread tractor

Abstract

The utility model relates to the technical field of tractors, and discloses a cultivator type narrow-tread tractor which is characterized in that an engine protection shell for protection is fixedly mounted at the front end of a tractor body, front wheels for steering are mounted on two sides of the lower end of the engine protection shell, and a cab is fixedly mounted at the side end of the engine protection shell; the two sides of the lower end of the cab are movably provided with the rear wheels used for driving, the hubs are installed in the front wheels and the rear wheels, the dampers have the buffering effect on impact force, transmission of vibration to the tractor body and the cab is effectively reduced, vibration felt by a driver in the driving process is obviously weakened, and the driving safety is improved. Fatigue and discomfort caused by long-time strong vibration environment are avoided, driving experience is improved, working efficiency is improved, collision and vibration between transmission parts are reduced through the buffering assembly, noise generated by vibration is reduced, and friction and abrasion between the transmission parts are correspondingly reduced due to reduction of impact force.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, specifically to a narrow-wheel-track tractor of the tiller type. Background Technology

[0002] Intertillage plays an important role in agricultural production. It can loosen the soil, remove weeds, and increase soil aeration, creating a good environment for crop growth. Narrow-wheel-track tractors are particularly suitable for intertillage because they can move flexibly between narrow ridges, and have been widely used in modern agricultural production.

[0003] In terms of comfort, traditional tractors lack effective cushioning devices. During driving and operation, the impact from uneven road surfaces and agricultural implements is directly transmitted to the vehicle body and cab. Drivers are exposed to strong vibrations for extended periods, which can easily lead to fatigue and discomfort. This not only reduces the driving experience but may also cause operational errors due to fatigue, thereby affecting work efficiency and operational safety. At the same time, the collisions and vibrations between tractor transmission components generate significant noise, which can damage the driver's hearing, and noise pollution can also have adverse effects on the surrounding environment.

[0004] From the perspective of equipment durability, tractor transmission components are subjected to frequent impact forces, which intensifies the friction and wear between components. For example, key transmission components such as half shafts, wheel hubs, and differentials will have their service life greatly shortened under such harsh working conditions for a long time, requiring frequent replacement of parts. This not only increases the maintenance cost of the equipment, but also leads to increased downtime for equipment maintenance, affecting the normal operation of agricultural production.

[0005] In addition, some existing buffer designs have unreasonable layouts. Even if some tractors are equipped with buffer devices, the buffer components are mostly set on one side or have a simple layout, which cannot evenly and comprehensively buffer the impact forces from all directions. In the complex farmland operation environment, tractors may encounter impact forces from various directions. One-sided buffering is prone to uneven buffering, causing some transmission components to still bear a large impact force, affecting the stability of power transmission, reducing the tractor's adaptability to complex working conditions, and thus affecting the quality and efficiency of operation.

[0006] To address the aforementioned issues, we have proposed a narrow-wheel-track tractor model for tillage. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a narrow wheelbase tractor in the form of a tiller, which solves the aforementioned problems.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a narrow-wheelbase tractor of the tiller type, comprising a tractor body, an engine protective shell for protection fixedly installed at the front end of the tractor body, front wheels for steering installed on both sides of the lower end of the engine protective shell, a cab fixedly installed on the side end of the engine protective shell, and rear wheels for driving movably installed on both sides of the lower end of the cab, with wheel hubs installed inside both the front and rear wheels, and further comprising:

[0009] Preferably, the buffer assembly is installed on the side of the wheel hub and is a structure used to buffer the wheel hub.

[0010] Preferably, a differential for rotation is fixedly installed at the center of the two front wheels, and the two ends of the differential are connected by a connecting shaft for support via threads, with the other end of the connecting shaft fixedly installed with a right half-shaft for installation.

[0011] Preferably, the outer surface of the right half-shaft is provided with a mounting groove, and a universal joint is movably mounted at the center of the mounting groove. The center of the inner end of the left half-shaft is provided with a circular groove that matches the universal joint, and the other end of the universal joint is movably mounted inside the left half-shaft.

[0012] Preferably, the left half-shaft is movably installed inside the right half-shaft, and mounting shafts for fixing are installed at both the upper and lower ends of the right half-shaft, with the other end of the mounting shaft extending through the surface of the left half-shaft to the other side of the right half-shaft.

[0013] Preferably, the outer end of the left half-shaft is fixedly connected to the center of the wheel hub.

[0014] Preferably, the buffer assembly includes a right half-shaft, a fixed block, and a damper. The fixed block for support is fixedly installed on the surface of the right half-shaft, and the damper for buffering is fixedly installed on the outer end surface of the fixed block, and the other end of the damper is fixedly connected to the surface of the wheel hub.

[0015] Preferably, the buffer components are provided in two sets, with two buffer components in each set, and are symmetrically arranged on the left and right sides of the corresponding right half-axis.

[0016] Compared with the prior art, this utility model provides a narrow wheelbase tractor for tillage, which has the following advantages:

[0017] 1. This type of narrow wheelbase tractor for tillers uses a damper to buffer the impact force, effectively reducing the transmission of vibration to the tractor body and cab. The vibration felt by the driver during driving is significantly reduced, avoiding fatigue and discomfort caused by prolonged exposure to strong vibrations, improving the driving experience and increasing work efficiency. The buffer component reduces collisions and vibrations between transmission components, thereby reducing noise caused by vibration. The reduction in impact force also reduces friction and wear between transmission components.

[0018] 2. This type of narrow wheel track tractor has two sets of buffer components, which are symmetrically arranged on the left and right sides of the right half shaft. This layout makes the buffering effect more uniform and comprehensive. No matter which direction the impact force comes from, it can be effectively buffered and absorbed. Stable power transmission helps the transmission components to work better together, avoiding the problem of uneven buffering caused by unilateral buffering, and improving the adaptability of the buffer components to various complex working conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the front wheel assembly of this utility model;

[0021] Figure 3 This utility model Figure 2 Exploded view diagram.

[0022] In the diagram: 1. Tractor body; 2. Engine protective shell; 3. Front wheel; 4. Rear wheel; 5. Cab; 6. Differential; 7. Connecting shaft; 8. Wheel hub; 9. Left half shaft; 10. Universal joint; 11. Mounting shaft; 12. Right half shaft; 13. Mounting slot; 14. Fixing block; 15. Damper. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-3A narrow-track tractor of the tiller type includes a tractor body 1. An engine protective housing 2 is fixedly mounted on the front end of the tractor body 1 for protection. Front wheels 3 for steering are mounted on both sides of the lower end of the engine protective housing 2. A cab 5 is fixedly mounted on the side end of the engine protective housing 2. Rear wheels 4 for driving are movably mounted on both sides of the lower end of the cab 5. Wheel hubs 8 are installed inside both the front wheels 3 and the rear wheels 4. The tractor also includes a buffer assembly, installed on the side end of the wheel hubs 8, for buffering the wheel hubs 8. Power is transmitted from the engine to a differential 6 located at the center of the two front wheels 3. The differential 6 is a key power distribution component. When the tractor turns, it can automatically adjust the speed of the two wheels according to the vehicle's driving state, so that the speed of the inner wheel is lower than that of the outer wheel, thereby ensuring that the tractor can turn flexibly and smoothly, avoiding problems such as excessive tire wear and steering difficulty.

[0025] Furthermore, a differential 6 for rotation is fixedly installed at the center of the two front wheels 3. The two ends of the differential 6 are connected by a connecting shaft 7 for support through threads. The other end of the connecting shaft 7 is fixedly installed with a right half shaft 12 for installation. The differential 6 is installed in the middle position. The gears inside the differential 6 can realize different rotation speeds of the two wheels to adapt to turning and other situations.

[0026] Furthermore, a mounting groove 13 is provided on the outer side surface of the right half-shaft 12, and a universal joint 10 is movably installed at the center of the mounting groove 13. A circular groove matching the universal joint 10 is provided at the center of the inner end of the left half-shaft 9, and the other end of the universal joint 10 is movably installed inside the left half-shaft 9. The universal joint 10 can ensure that power can still be smoothly transmitted from the half-shaft to the wheel hub.

[0027] Furthermore, the left half-shaft 9 is movably installed inside the right half-shaft 12. Both the upper and lower ends of the right half-shaft 12 are equipped with mounting shafts 11 for fixing, and the other end of the mounting shaft 11 extends through the surface of the left half-shaft 9 to the other side of the right half-shaft 12. The mounting shaft 11 fixes the left half-shaft 9 inside the right half-shaft 12.

[0028] Furthermore, the outer end of the left half-shaft 9 is fixedly connected to the center of the wheel hub 8, and the wheel hub 8 supports the left half-shaft 9.

[0029] Furthermore, the buffer assembly includes a right half-shaft 12, a fixing block 14, and a damper 15. The fixing block 14 for support is fixedly installed on the surface of the right half-shaft 12. The damper 15 for buffering is fixedly installed on the outer end surface of the fixing block 14, and the other end of the damper 15 is fixedly connected to the surface of the hub 8. The fixing block 14 is fixedly installed on the surface of the right half-shaft 12, serving as support and connection. One end of the damper 15 is fixedly connected to the outer end surface of the fixing block 14, and the other end is fixedly connected to the surface of the hub 8.

[0030] Furthermore, two sets of buffer components are set, with two buffer components in each set, symmetrically arranged on the left and right sides of the right half-axis 12. The symmetrical layout can make the buffering effect more uniform and comprehensive, and better cope with impacts and vibrations from different directions.

[0031] Structural Description: 1. Tractor Body: The tractor body is the basic load-bearing structure of the entire narrow wheelbase tractor. It provides a platform for the installation and support of other components, and bears key components such as the engine, cab, and wheels. It is the basic framework for the tractor to realize various functions.

[0032] 2. Engine Protective Housing: The engine protective housing is fixedly installed at the front of the tractor body, mainly to protect the internal engine. It can prevent external dust, debris, rainwater, etc. from damaging the engine, and at the same time, it can reduce the transmission of noise generated by the engine during operation to a certain extent. The protective housing is tightly connected to the tractor body through a specific fixing method;

[0033] 3. Front wheels: The front wheels are mounted on both sides of the lower end of the engine protective housing and serve as the tractor's steering wheels, responsible for controlling the tractor's direction of travel. The driver changes the steering angle of the front wheels by operating the steering system, enabling the tractor to turn flexibly and adapt to different working environments and driving needs;

[0034] 4. Rear Wheels: The rear wheels are the tractor's drive wheels, mounted in the appropriate positions and connected to the transmission system via hubs. They provide the tractor with forward and reverse power and bear the main load and driving force during tractor operation and travel.

[0035] 5. Cab: The cab is fixedly installed on the side of the engine protective housing and is the space for the driver to operate the tractor. The cab is equipped with various operating controls and an instrument panel, providing the driver with a comfortable operating environment while also protecting them from wind, rain, and external interference.

[0036] 6. Differential: The differential is installed at the center of the two front wheels and is a key component for power distribution in the tractor. When the tractor turns, it can automatically adjust the speed of the two wheels according to the vehicle's driving conditions, so that the speed of the inner wheel is lower than that of the outer wheel, ensuring that the tractor turns smoothly and flexibly. The differential is connected to the half-shaft through a connecting shaft.

[0037] 7. Connecting shaft: The two ends of the connecting shaft are connected to the differential and the half shaft respectively by threads. Its function is to stably transmit the power of the differential to the half shaft, ensuring the continuity and reliability of power transmission, and acting as a bridge in the power transmission process.

[0038] 8. Wheel hub: The wheel hub is installed at the center of the wheel and is the component connecting the wheel and the half-shaft. Through its connection with the half-shaft, it converts the power transmitted from the half-shaft into the rotation of the wheel, thereby driving the tractor. At the same time, the wheel hub also provides support and positioning for the wheel.

[0039] 9. Left Half Shaft: The left half shaft is an important component of power transmission. One end is connected to the differential via a connecting shaft, and the other end is connected to the wheel hub. It transmits the power distributed by the differential to the left wheel hub and wheel, enabling the left wheel to rotate. The center of the inner end of the left half shaft has a circular groove that matches the universal joint.

[0040] 10. Universal Joint: The universal joint is movably installed at the center of the mounting groove on the outer side surface of the right half-shaft, and the other end is movably installed in the circular groove of the left half-shaft. It can flexibly transmit power at different angles. When the angle of the half-shaft changes due to wheel bounce and steering during tractor operation, the universal joint can ensure that power can still be smoothly transmitted from the half-shaft to the wheel hub.

[0041] 11. Mounting Shaft: The mounting shaft is installed at both the upper and lower ends of the right half-shaft, with its other end penetrating the surface of the left half-shaft and extending to the other side of the right half-shaft. It serves to fix and connect the left and right half-shafts, ensuring that the half-shafts do not loosen or shift when transmitting power, thus guaranteeing the stability of the power transmission system.

[0042] 12. Right Half-Shaft: The right half-shaft is also a power transmission component. One end is connected to the differential via a connecting shaft, and the other end is connected to the wheel hub, transmitting power to the right-side wheel hub and wheel. The outer surface of the right half-shaft has a mounting groove for installing a universal joint.

[0043] 13. Mounting slot: The mounting slot is located on the outer surface of the right half-shaft. Its function is to provide a mounting position for the universal joint, ensuring that the universal joint can be accurately installed on the right half-shaft, so as to realize a reliable connection and power transmission between the half-shaft and the universal joint.

[0044] 14. Fixing Block: The fixing block is fixedly installed on the surface of the right half-shaft as part of the buffer assembly, serving to support and connect the damper. It provides a mounting base for the damper, ensuring its stable operation.

[0045] 15. Damper: One end of the damper is fixedly connected to the outer surface of the fixed block, and the other end is fixedly connected to the surface of the wheel hub. When the tractor is traveling or operating, the impact force on the wheel hub will cause the damper to generate a corresponding damping force. This damping force can buffer and reduce the impact force, reduce the impact force transmitted to the half shaft and other transmission components, and play a role in protecting the transmission system.

[0046] Instructions for use

[0047] Working Principle: The tractor body 1 is the basic load-bearing structure of the entire equipment. An engine protective shell 2 is fixedly installed at its front end. The engine protective shell 2 not only protects the internal engine, but the engine is also the source of the tractor's power. The engine converts chemical energy into mechanical energy through fuel combustion, generating powerful force to provide basic power support for the tractor's subsequent operations and travel. Power is transmitted from the engine to the differential 6 located at the center of the two front wheels 3. The differential 6 is a key power distribution component. When the tractor turns, it automatically adjusts the speed of the two wheels according to the vehicle's driving status, ensuring that the inner wheel's speed is lower than the outer wheel's speed, thus guaranteeing that the tractor can turn flexibly and smoothly. The differential 6 is connected to the half-shafts via connecting shafts 7 at both ends. The connecting shafts 7 are threaded to the differential 6 and the half-shafts, ensuring that power is stably transmitted from the differential 6 to the half-shafts. The outer surface of the right half-shaft 12 has a mounting groove 13 for mounting... A universal joint 10 is movably installed at the center of the groove 13, and a circular groove matching the universal joint 10 is provided at the center of the inner end of the left half-shaft 9. The other end of the universal joint 10 is movably installed in this circular groove. The existence of the universal joint 10 is crucial. It can flexibly transmit power at different angles. Because during the tractor's operation, the half-shaft will change angle due to wheel bounce and steering. The universal joint 10 can ensure that even if the half-shaft is at different angles, the power can still be smoothly transmitted from the half-shaft to the wheel hub 8. When the tractor is driving or working, the wheel hub 8 will be subjected to various impact forces. At this time, the damper 15 will play a role, generating a corresponding damping force to buffer and weaken the impact force, thereby reducing the impact force transmitted to the half-shaft and other transmission components. There are two sets of buffer components, which are symmetrically arranged on the left and right sides of the right half-shaft 12. The symmetrical layout can make the buffering effect more uniform and comprehensive, and better cope with impacts and vibrations from different directions.

[0048] 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 cultivator type narrow wheel base tractor, comprising a tractor body (1), a front end of the tractor body (1) is fixedly provided with an engine protection shell (2) for protection, both sides of a lower end of the engine protection shell (2) are provided with front wheels (3) for steering, a side end of the engine protection shell (2) is fixedly provided with a cab (5), both sides of a lower end of the cab (5) are movably provided with rear wheels (4) for driving, an inner part of each of the front wheels (3) and the rear wheels (4) is provided with a wheel hub (8), characterized in that, Also include: Buffer assembly, installed in the side end of the hub (8), for the structure of the hub (8) buffer; The buffer assembly includes a right half shaft (12), a fixed block (14) and a damper (15), the surface of the right half shaft (12) is fixedly installed with a fixed block (14) for supporting, the outer end surface of the fixed block (14) is fixedly installed with a damper (15) for buffering, and the other end of the damper (15) is fixedly connected with the surface of the hub (8); The buffer assembly is provided with two groups, each group of buffer assembly is provided with two, corresponding to the right half shaft (12) left and right sides of the symmetrical arrangement.

2. A cultivator type narrow track tractor as claimed in claim 1 wherein: The center of the two front wheels (3) is fixedly installed with a differential (6) for rotation, the two ends of the differential (6) are threadedly connected with a connecting shaft (7) for supporting, the other end of the connecting shaft (7) is fixedly installed with a right half shaft (12) for installation.

3. A cultivator-type narrow track tractor as claimed in claim 2 wherein: The outer side surface of the right half shaft (12) is provided with a mounting groove (13), the center of the mounting groove (13) is movably installed with a universal joint (10), the inner end of the left half shaft (9) is provided with a circular groove matched with the universal joint (10), and the other end of the universal joint (10) is movably installed in the left half shaft (9).

4. A cultivator-type narrow track tractor as claimed in claim 3 wherein: The left half shaft (9) is movably installed in the right half shaft (12), the upper and lower ends of the right half shaft (12) are both installed with a mounting shaft (11) for fixing, and the other end of the mounting shaft (11) extends to the other side of the right half shaft (12) through the surface of the left half shaft (9).

5. A cultivator type narrow track tractor as claimed in claim 3 wherein: The outer end of the left half shaft (9) is fixedly connected with the center of the hub (8).

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