Differential gear box

Abstract

The utility model provides a differential gear box, and belongs to the field of all-terrain vehicles. The all-terrain vehicle solves the problem that an existing all-terrain vehicle cannot quickly turn around on a narrow road surface. The differential gear box comprises a box body and a transmission assembly installed in the box body, the transmission assembly comprises a left output shaft and a right output shaft, the differential gear box further comprises two sets of differential gear mechanisms, an input shaft and a hydraulic driving device, and the input shaft is sleeved with a large gear. The hydraulic driving device comprises a main driving shaft, an auxiliary driving shaft, a driving gear, a driven gear, a meshing gear and a driving hydraulic device, the meshing gear is in meshing transmission fit with a gear at the output end of one differential gear mechanism, and a plurality of supporting partition plates for supporting and installing the differential gear mechanisms are arranged in the box body. The transmission device has the advantages of being simple in structure, stable in transmission and suitable for all-terrain vehicles of various specifications.

Description

Technical Field

[0001] The utility model belongs to the field of all-terrain vehicles and relates to a differential gear box. Background Art

[0002] An amphibious all-terrain vehicle is a vehicle that can travel on any terrain or on water and can smoothly pass through various complex terrains.

[0003] Among them, the power of the all-terrain vehicle engine enters the differential gear box through the drive shaft, directly drives the planetary wheel carrier, and then the planetary wheel carrier drives the left and right half shafts to drive the left and right wheels respectively. When the car is moving straight, the speeds of the left and right wheels and the planetary wheel carrier are equal, maintaining a balanced state. When the all-terrain vehicle turns, the balance is broken, the speed of the outer wheel increases, and the speed of the inner wheel decreases, achieving a speed difference, thereby turning around. However, amphibious all-terrain vehicles are relatively large in size. In an escape environment with narrow roads or complex water conditions, the two planetary wheel carriers in the differential gear box rotate synchronously. Therefore, the vehicle cannot quickly turn around and escape. Summary of the invention

[0004] The purpose of the utility model is to provide a differential gear box to solve the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A differential gearbox, comprising a box body and a transmission assembly installed in the box body, characterized in that the transmission assembly comprises a left output shaft and a right output shaft;

[0006] The differential gear box also includes two sets of differential gear mechanisms respectively matched with the left output shaft and the right output shaft, an input shaft connected with the engine output shaft, and a hydraulic drive device for realizing the forward and reverse rotation of the differential gear mechanism;

[0007] The input shaft is sleeved with a large gear which is meshed and driven with two sets of differential gear mechanisms;

[0008] The hydraulic drive device includes a main drive shaft, an auxiliary drive shaft, a driving gear sleeved on the main drive shaft, a driven gear sleeved on the auxiliary drive shaft and meshing with the driving gear, a meshing gear located on the auxiliary drive shaft, and a driving hydraulic pressure for driving the main drive shaft to rotate;

[0009] The meshing gear is meshed and driven with one of the output end gears of the differential gear mechanism;

[0010] The box body is provided with a plurality of supporting partitions for supporting and installing the differential gear mechanism.

[0011] In the above-mentioned differential gear box, the two sets of differential gear mechanisms are arranged in the box body through a support partition, and the transmission is realized through the engine, the output shaft and the large gear meshing transmission structure.

[0012] In the above-mentioned differential gear box, the left output shaft and the right output shaft are respectively located below the corresponding differential gear mechanism, and are both provided with transmission gears meshing with the output end gears of the differential gear mechanism.

[0013] In the above-mentioned differential gear box, one of the output ends of the differential gear mechanism realizes reverse rotation through driving hydraulics, main drive shaft, auxiliary drive shaft, driving gear, driven gear and meshing gear transmission, thereby driving the transmission gear to rotate in the opposite direction, and then realizing the two differential gear mechanisms to rotate in both positive and negative directions.

[0014] In the above-mentioned differential gear box, the large gear on the input shaft and the input end gears of the two sets of differential gear mechanisms are meshed and driven with each other.

[0015] Compared with the prior art, the differential gear box has a simple structure, small size, easy assembly and installation, and stable transmission. It is suitable for all-terrain vehicles of various specifications, and can drive the all-terrain vehicles to quickly rotate and turn around on the spot. It is suitable for various escape environments with complex road conditions on narrow roads or water surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structure diagram of the differential gear box.

[0017] Figure 2 Schematic diagram of the internal three-dimensional structure of the differential gear box.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the hydraulic drive device of the differential gear box.

[0019] In the figure, 1, housing; 2, left output shaft; 3, right output shaft; 4, differential gear mechanism; 5, input shaft; 6, large gear; 7, drive shaft; 8, auxiliary drive shaft; 9, driving gear; 10, driven gear; 11, driving hydraulics; 12, supporting partition; 13, meshing gear. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3As shown, the differential gear box comprises a box body 1 and a transmission assembly installed in the box body 1, the transmission assembly comprises a left output shaft 2 and a right output shaft 3, the differential gear box also comprises two sets of differential gear mechanisms 4 respectively matched with the left output shaft 2 and the right output shaft 3, an input shaft 5 connected with the engine output shaft, and a hydraulic drive device for realizing the forward and reverse rotation of the differential gear mechanism 4, the input shaft 5 is sleeved with a large gear 6 meshing with the two sets of differential gear mechanisms 4, the hydraulic drive device comprises a main drive shaft 7, an auxiliary drive shaft 8, a driving gear 9 sleeved on the main drive shaft 7, a driven gear 10 sleeved on the auxiliary drive shaft 8 and meshing with the driving gear 9, a meshing gear 13 located on the auxiliary drive shaft 8, and a driving hydraulic 11 for driving the main drive shaft 7 to rotate, the meshing gear 13 meshes with one of the output end gears of the differential gear mechanism 4, and a plurality of support partitions 12 for supporting and installing the differential gear mechanism 4 are arranged in the box body 1.

[0022] The invention has a simple structure, a small volume, is easy to assemble and install, and has a stable transmission. It is suitable for all-terrain vehicles of various specifications, and can drive the all-terrain vehicles to quickly rotate and turn around on the spot. It is suitable for various escape environments with complex road conditions on narrow roads or water surfaces.

[0023] Those skilled in the art should know that the differential gear mechanism 4 belongs to the prior art.

[0024] To elaborate further, in order to facilitate the support and installation of the differential gear mechanism 4, two sets of differential gear mechanisms 4 are arranged in the housing 1 at intervals through a support partition 12, and transmission is achieved through the meshing transmission structure of the engine, the output shaft and the large gear 6.

[0025] To elaborate further, in order to realize the forward and reverse rotation of the two sets of differentials, the left output shaft 2 and the right output shaft 3 are respectively located under the corresponding differential gear mechanism 4, and are both provided with transmission gears that mesh with the output end gears of the differential gear mechanism 4. Among them, the output end of one differential gear mechanism 4 is driven by the driving hydraulics 11, the main drive shaft 7, the auxiliary drive shaft 8, the driving gear 9, the driven gear 10 and the meshing gear 13 to realize the reverse rotation, thereby driving the transmission gear to rotate in the opposite direction, and then realizing the forward and reverse rotation of the two differential gear mechanisms 4.

[0026] Preferably, the large gear 6 on the input shaft 5 and the input end gears of the two sets of differential gear mechanisms 4 are meshed and driven with each other.

[0027] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0028] Although the terms such as housing 1, left output shaft 2, right output shaft 3, differential gear mechanism 4, input shaft 5, large gear 6, drive shaft 7, auxiliary drive shaft 8, driving gear 9, driven gear 10, driving hydraulic pressure 11, supporting partition 12, meshing gear 13 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A differential gearbox, comprising a housing (1) and a transmission assembly installed in the housing (1), characterized in that: The transmission assembly comprises a left output shaft (2) and a right output shaft (3); The differential gear box also includes two sets of differential gear mechanisms (4) respectively matched with the left output shaft (2) and the right output shaft (3), an input shaft (5) connected to the engine output shaft, and a hydraulic drive device for realizing forward and reverse rotation of the differential gear mechanism (4); The input shaft (5) is sleeved with a large gear (6) that meshes with the two sets of differential gear mechanisms (4); The hydraulic drive device comprises a main drive shaft (7), an auxiliary drive shaft (8), a driving gear (9) sleeved on the main drive shaft (7), a driven gear (10) sleeved on the auxiliary drive shaft (8) and meshing with the driving gear (9), a meshing gear (13) located on the auxiliary drive shaft (8), and a driving hydraulic pressure (11) for driving the main drive shaft (7) to rotate; The meshing gear (13) meshes with the output end gear of one of the differential gear mechanisms (4) for transmission cooperation; A plurality of supporting partitions (12) for supporting and installing the differential gear mechanism (4) are arranged in the box body (1).

2. A differential gearbox according to claim 1, characterized in that: The two sets of differential gear mechanisms (4) are arranged in the housing (1) at intervals via a supporting partition (12), and transmission is achieved through the engagement transmission structure of the engine, the output shaft and the large gear (6).

3. A differential gearbox according to claim 1, characterized in that: The left output shaft (2) and the right output shaft (3) are respectively located below the corresponding differential gear mechanism (4), and are both provided with transmission gears meshing with the output end gears of the differential gear mechanism (4).

4. A differential gearbox according to claim 1, characterized in that: The output end of one of the differential gear mechanisms (4) achieves reverse rotation through the driving hydraulic pressure (11), the main drive shaft (7), the auxiliary drive shaft (8), the driving gear (9), the driven gear (10) and the meshing gear (13), thereby driving the transmission gear to rotate in the opposite direction, thereby achieving the two differential gear mechanisms (4) rotating in both positive and negative directions.

5. A differential gearbox according to claim 1, characterized in that: The large gear (6) on the input shaft (5) and the input end gears of the two sets of differential gear mechanisms (4) are meshed with each other for transmission.

Images