Agricultural differential device, agricultural cultivator

Abstract

The utility model discloses an agricultural differential mechanism device, agricultural machine, include: transmission spur gear, transmission spur gear is used for transmission power, right transmission fork, right transmission fork is fixedly connected with transmission spur gear, differential lock, differential lock is concentric with transmission spur gear and installs, left planetary transmission tooth, left planetary transmission tooth is inbedded in transmission spur gear, right planetary transmission tooth, right planetary transmission tooth is inbedded in right transmission fork, and left planetary transmission tooth is connected transmission with right planetary transmission tooth through small planetary transmission tooth, and small planetary transmission tooth is fixed on right transmission fork, differential transmission gear shaft, differential transmission gear shaft is connected with left planetary transmission tooth and right planetary transmission tooth respectively, driving gear, driving gear and differential transmission gear shaft are connected, drive shaft, drive shaft is connected with driving gear. The utility model discloses an agricultural differential mechanism device can need to carry out the steering when the machine operation, no longer need to adopt the operation of gear separation, belong to the technical field of differential mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of differential technology, and specifically relates to an agricultural differential device and a farming machine. Background Technology

[0002] In traditional agricultural tillers, the steering shaft of the gearbox is typically configured with the left and right steering gears and the intermediate transmission gear in a constantly meshed state. When the tiller needs to be steered, the left and right steering gears are moved separately by a lever, causing the steering gear to disengage from the intermediate gear, cutting off power to one side while the other side continues normal transmission, thus achieving the steering purpose. After the external force is removed, the gears return to the constantly meshed state, and the machine moves straight normally. However, when working in the field, steering is a very frequent action. This frequent disengagement and engagement of the gears makes them prone to damage due to frequent collisions, which affects the normal operation of the tiller and reduces its service life. Utility Model Content

[0003] The purpose of this utility model is to provide an agricultural differential device and a tiller that eliminates the need for gear disengagement when the machine needs to turn during operation, thereby extending the service life of the differential.

[0004] The specific technical solution is as follows: An agricultural differential device, comprising: Spur gears are used to transmit power. The right drive fork is fixedly connected to the drive spur gear. Differential lock, the differential lock is installed concentrically with the drive spur gear; The left planetary transmission gear is embedded inside the transmission spur gear; The right planetary transmission gear is embedded in the right transmission fork. The left planetary transmission gear and the right planetary transmission gear are connected and transmitted through a small planetary transmission gear, which is fixed on the right transmission fork. Differential transmission gear shaft, which is connected to the left planetary transmission gear and the right planetary transmission gear respectively; Drive gear, the drive gear and the differential gear shaft are connected; Drive shaft, which is connected to drive gear.

[0005] Preferably, the right drive fork is fixedly connected to the drive spur gear by bolts.

[0006] Preferably, the left planetary gear is connected to the transmission spur gear via a spline.

[0007] Preferably, the differential lock is located on the outside of the transmission gear shaft, and the differential lock is movable in the axial direction of the transmission gear shaft.

[0008] Preferably, the transmission spur gear has a through groove, the left planetary transmission gear has a groove, the through groove and the groove are connected, and the differential lock has a locking ball. When the differential lock moves away from the right transmission fork, the locking ball is pressed into the groove.

[0009] Preferably, the differential transmission gear shafts are connected to the left planetary transmission gear and the right planetary transmission gear respectively via splines.

[0010] Preferably, there are two drive shafts and two drive gears, and the two drive shafts are connected to the two ends of the differential transmission gear shaft through the two drive gears respectively.

[0011] A type of agricultural tiller having an agricultural differential device.

[0012] Compared with existing technologies, this utility model has the following beneficial effects: 1. The agricultural differential device of this utility model eliminates the need for gear disengagement when steering during machine operation; steering can be performed directly. Similar to a car, the differential assembly adjusts the rotation of the two drive wheels according to the force on the left and right drive wheels, with the inner wheel moving relatively slower and the outer wheel moving relatively faster. This creates a smooth steering system. During steering, the gears remain engaged, reducing gear collision forces and ensuring gear lifespan. This solves the problem of gear damage caused by frequent gear disengagement and engagement in the prior art.

[0013] 2. The agricultural differential device in this utility model is equipped with a differential lock, which means that it can switch between the state of needing and not needing differential at any time; the differential state allows the machine to travel flexibly during operation; the differential lock state can ensure that the machine travels in a straight line normally, and can also help the machine get out of trouble better when it is stuck. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a cross-sectional view of an agricultural differential device.

[0016] Figure 2 This is a schematic diagram showing the connection between the drive shaft, drive gear, and differential transmission gear shaft.

[0017] Figure 3 This is a schematic diagram showing the connection of the differential lock, left planetary transmission gear, right planetary transmission gear, transmission spur gear, and right transmission fork.

[0018] Explanation of key figure labels: 1 is the transmission spur gear, 2 is the right transmission fork, 3 is the differential lock, 4 is the left planetary transmission gear, 5 is the right planetary transmission gear, 6 is the differential transmission gear shaft, 7 is the drive gear, 8 is the drive shaft, and 9 is the small planetary transmission gear. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0023] A differential is a crucial and sophisticated device in agricultural machinery. Its core function is to allow the two wheels, connected to the same drive axle, to rotate at different speeds when turning. For example, when a tractor turns in a field, the outer wheel needs to roll a longer distance, thus requiring a higher speed. The inner wheel needs to roll a shorter distance, thus requiring a slower speed. Without a differential, the left and right wheels would be rigidly connected, forcing them to rotate at the same speed. This would cause the inner wheel to slip and the outer wheel to slip during turns. This results in the driver needing to exert more effort to turn, tires wearing out quickly due to forced drag, and components such as axles and gearboxes experiencing additional stress and potential damage. Wheel slippage can also crush and damage crops or soil structure. The agricultural differential device provided in this embodiment aims to solve the above problems.

[0024] Example 1 like Figures 1-3 As shown, this embodiment provides an agricultural differential device, comprising: The drive spur gear 1 is used to transmit power; specifically, the engine's power is transmitted through the gearbox to the driving bevel gear of the final drive. The driving bevel gear drives the driven bevel gear, which is rigidly fixed to the differential housing by bolts. Thus, power is transmitted to the differential housing, causing it to generate rotational torque. The driven bevel gear is connected to a drive shaft, which is connected to a spur gear that meshes with the drive spur gear 1 for transmission.

[0025] Right drive fork 2, which is fixedly connected to drive spur gear 1; Differential lock 3 is installed concentrically with transmission spur gear 1; Left planetary transmission gear 4, which is embedded in the transmission spur gear 1; The right planetary transmission gear 5 is embedded in the right transmission fork 2. The left planetary transmission gear 4 and the right planetary transmission gear 5 are connected and transmitted through the small planetary transmission gear 9, which is fixed on the right transmission fork 2. Differential transmission gear shaft 6 is connected to the left planetary transmission gear 4 and the right planetary transmission gear 5 respectively. As the main power shaft for realizing the differential function, the differential transmission gear shaft 6, through the cooperation of the left planetary transmission gear 4 and the right planetary transmission gear 5 with the differential lock 3, realizes the differential or same speed rotation of the two differential transmission gear shafts 6.

[0026] Drive gear 7 is connected to differential transmission gear shaft 6. As a transmission gear, drive gear 7 is mainly used to transmit the power of differential transmission gear shaft 6 to the two drive shafts 8 respectively, so that the two drive shafts 8 can rotate at the same speed or different speeds.

[0027] Drive shaft 8 is connected to drive gear 7. Specifically, drive shaft 8 is a structure that connects to and transmits power to a wheel assembly, such as the two front wheels of a tractor. Two drive shafts 8 are connected to the two front wheels of the tractor respectively, thereby enabling the two front wheels of the tractor to rotate at different speeds.

[0028] The agricultural differential device in this embodiment also includes a differential housing. Since the differential housing is an existing housing, which is a hollow housing that is usually divided into two halves and connected by bolts, it will not be described in detail here. It is connected to the driven gear of the main reducer and serves as the carrier of the entire differential.

[0029] The right drive fork 2 is fixedly connected to the drive spur gear 1 by bolts.

[0030] The left planetary transmission gear 4 is connected to the transmission spur gear 1 via a spline for transmission.

[0031] Differential lock 3 is located on the outside of the drive gear shaft and can move axially along the drive gear shaft. The differential lock is a device that can be manually controlled by the driver. When the differential lock switch or button is pressed, it rigidly locks the two half-shaft gears, forcing the left and right wheels to rotate at exactly the same speed. When one wheel gets stuck in mud, ice, or a deep ditch and slips, the driver activates the differential lock to ensure that both drive wheels receive power, thus easily getting out of trouble.

[0032] The transmission spur gear 1 has a through groove, and the left planetary transmission gear 4 has a groove. The through groove and the groove are connected. The differential lock 3 has a locking ball. When the differential lock 3 moves away from the right transmission fork 2, the locking ball is pressed into the groove.

[0033] The differential transmission gear shaft 6 is connected to the left planetary transmission gear 4 and the right planetary transmission gear 5 via splines.

[0034] There are two drive shafts 8 and two drive gears 7. The two drive shafts 8 are connected to the two ends of the differential transmission gear shaft 6 through the two drive gears 7 respectively.

[0035] Working principle: When the differential lock 3 is moved to the right, the transmission spur gear 1 and the left planetary transmission gear 4 are in a disengaged state. Power is transmitted through the small planetary transmission gear 9 to the left planetary transmission gear 4 and the right planetary transmission gear 5, and then the power is transmitted down in sequence. At this time, differential speed can be adjusted according to the force feedback from the two drive wheels. When the differential lock 3 is moved to the left, the locking ball is pressed into the groove on the left planetary transmission gear 4. The transmission spur gear 1 and the left planetary transmission gear 4 are in a meshing state. At this time, the planetary differential speed adjustment function is disabled, and differential speed adjustment is no longer performed according to the force on the drive wheels. The machine moves in a straight line.

[0036] Example 2 This embodiment provides an agricultural tiller equipped with an agricultural differential device. By using the agricultural differential device of Embodiment 1, the tiller of this embodiment eliminates the need for gear disengagement when steering is required during operation; steering can be performed directly, similar to a car. The differential assembly adjusts the rotation of the two drive wheels according to the force applied to them, with the inner wheel moving relatively slower and the outer wheel moving relatively faster. This creates a smooth steering system. During steering, the gears remain engaged, reducing gear collision forces and ensuring gear lifespan. This solves the problem of gear damage caused by frequent gear disengagement and engagement in existing technologies.

[0037] The parts not mentioned in this embodiment are the same as in Embodiment 1.

[0038] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An agricultural differential device, characterized in that, include: Spur gears are used to transmit power. The right drive fork is fixedly connected to the drive spur gear. Differential lock, the differential lock is installed concentrically with the drive spur gear; The left planetary transmission gear is embedded inside the transmission spur gear; The right planetary transmission gear is embedded in the right transmission fork. The left planetary transmission gear and the right planetary transmission gear are connected and transmitted through a small planetary transmission gear, which is fixed on the right transmission fork. Differential transmission gear shaft, which is connected to the left planetary transmission gear and the right planetary transmission gear respectively; Drive gear, the drive gear and the differential gear shaft are connected; Drive shaft, which is connected to drive gear.

2. The agricultural differential device according to claim 1, characterized in that, The right drive fork is fixedly connected to the drive spur gear by bolts.

3. The agricultural differential device according to claim 1, characterized in that, The left planetary gear is connected to the transmission spur gear via a spline for transmission.

4. The agricultural differential device according to claim 1, characterized in that, The differential lock is located on the outside of the drive gear shaft, and the differential lock can move in the axial direction of the drive gear shaft.

5. An agricultural differential device according to claim 4, characterized in that, The transmission spur gear has a through groove, and the left planetary transmission gear has a groove. The through groove and the groove are connected. The differential lock has a locking ball. When the differential lock moves away from the right transmission fork, the locking ball is pressed into the groove.

6. An agricultural differential device according to claim 1, characterized in that, The differential transmission gear shafts are connected to the left planetary transmission gear and the right planetary transmission gear respectively via splines.

7. An agricultural differential device according to claim 1, characterized in that, There are two drive shafts and two drive gears. The two drive shafts are connected to the two ends of the differential transmission gear shaft through the two drive gears respectively.

8. A farming machine, characterized in that, The agricultural tiller has an agricultural differential device as described in any one of claims 1-7.

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