Vehicle differential structure suitable for vehicle pivot steering

Abstract

The utility model discloses a vehicle differential structure suitable for vehicle pivot steering, which comprises an output system, an input system and a convertible gear structure, the output system comprises two output shafts and a driven gear, and the ends of the output shafts are provided with half axle gears; the driven gear is arranged at the end of one output shaft; the input system comprises an input shaft and a displacement control module, the input shaft is provided with a driving gear, and the displacement control module drives the input shaft to move so that the driving gear can be switched between the state of being meshed with the driven gear and the state of being meshed with the two half axle gears; the convertible gear structure comprises a gear shaft, a hydraulic press and a planetary gear, and one end of the gear shaft is connected with the first output shaft; the hydraulic press is arranged at the other end of the gear shaft; the planetary gear is connected with the hydraulic press, the hydraulic press is jacked up and contracted to be matched with the displacement of the input shaft, switching between normal running and in-situ turning of the automobile can be completed, the structure is simpler, and the failure rate is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a vehicle differential structure suitable for on-site steering of a vehicle. Background Art

[0002] In recent years, encouraged by national policies, with the popularization of automobiles and the rapid development of new energy vehicles, the development of new automobile technologies has gradually accelerated. Among them, the automobile U-turn technology has been very popular. The advantage of this technology is that it can improve the vehicle's maneuverability and controllability in narrow or confined spaces.

[0003] Currently, existing on-the-spot U-turn technologies have problems such as high cost, complex structure, low energy efficiency, and low durability, especially four-wheel steering and independent hub motors, which involve complex mechanical and electronic control systems; the complex steering and drive systems of existing on-the-spot U-turn technologies cause them to face greater risks of wear and failure under extreme or harsh driving conditions. Utility Model Content

[0004] The purpose of the utility model is to provide a vehicle differential structure suitable for vehicle pivoting to solve the above problems.

[0005] The technical solution of the utility model is:

[0006] A vehicle differential structure suitable for vehicle steering in place, comprising: an output system, comprising: two output shafts, namely a first output shaft and a second output shaft, and the two output shafts are located on the same axis, and the ends of the two output shafts close to each other are respectively provided with two half-shaft gears, the two half-shaft gears are respectively: a first half-shaft gear located on the first output shaft and a second half-shaft gear located on the second output shaft; a driven gear, arranged at the other end of the first output shaft; an input system for providing power to the first output shaft; a convertible gear structure, comprising: a gear shaft, which is a bent shaft, one end of which is connected to one end of the first output shaft; a hydraulic press, a fixed end of which is connected to the other end of the gear shaft; a planetary gear, a shaft body of which is connected to the telescopic end of the hydraulic press, and the planetary gears are respectively engaged with the first half-shaft gear and the second half-shaft gear.

[0007] Furthermore, the input system includes an input shaft, which is rotated by the input transmission of the engine. The input shaft is arranged perpendicular to the first output shaft. The end of the input shaft is configured with a driving gear, and the driving gear is engaged with the driven gear.

[0008] Furthermore, the hydraulic device is a hydraulically driven boom telescopic structure.

[0009] Furthermore, the gear shaft is coaxially arranged with the first output shaft and formed integrally, which can reduce the risk of steering and drive system failure under extreme or harsh driving conditions, ensuring a more durable and reliable structure.

[0010] Furthermore, the input shaft is equipped with a displacement control module, which is used to drive the input shaft to shift the driving gear between meshing with the driven gear and meshing with the two side gears. As the input shaft shifts, the hydraulic actuator operates synchronously, accelerating the speed at which this structure achieves shifting.

[0011] Furthermore, the gear shaft is a 90° bent shaft.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] Different from traditional on-the-spot U-turn technologies such as four-wheel steering systems and independent wheel hub motors of electric vehicles, the output system of the differential of the utility model is equipped with planetary gears, gear shafts and hydraulic pressure. During operation, it is only necessary to move the input shaft position and control the hydraulic pressure to change the position of the planetary gears, thereby controlling the matching relationship between the half-shaft gears and the planetary gears on the two output shafts. When a U-turn is required on the spot, the two half-shaft gears and the planetary gears are separated, and the position of the input shaft is changed by the displacement control module to make the driving gear and the two half-shaft gears match. By rotating the input shaft, the first half-shaft gear and the second half-shaft gear rotate synchronously in opposite directions to achieve a U-turn on the spot. The utility model can complete the switching between normal driving of the car and on-the-spot U-turn by lifting and shrinking the hydraulic pressure to match the movement of the input shaft. There is no need to install more mechanical devices, avoiding excessive changes to the differential, ensuring the safety of the car's driving, avoiding the risk of large wear and failure of the differential under extreme or harsh driving conditions caused by complex steering and drive systems, and reducing the difficulty of repair when the differential fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the normal start-up of a vehicle differential structure suitable for vehicle pivoting according to the present invention.

[0015] Figure 2 This is a schematic diagram of the vehicle differential structure turning around in place according to the utility model.

[0016] Figure 3 This is a schematic diagram of the gear structure that can be changed during normal startup of the vehicle differential structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the gear structure of the vehicle differential structure that can be changed when turning around in place.

[0018] Figure 5 This is a schematic diagram of the convertible gear structure of the vehicle differential structure of the utility model.

[0019] Among them, 1. Second output shaft, 2. Second half-shaft gear, 3. First half-shaft gear, 4. Input shaft, 5. Driven gear, 6. Second output shaft, 7. Planetary gear, 8. Gear shaft, 9. Hydraulic device, 10. Driving gear. DETAILED DESCRIPTION

[0020] The following combination Figures 1 to 5 , a detailed description of the specific embodiments of the present invention is provided. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the present invention.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0022] Example

[0023] like Figure 1 As shown, a vehicle differential structure suitable for vehicle in-situ steering includes: an output system, an input system and a transformable gear structure, such as Figure 1 As shown, the output system includes: two output shafts and a driven gear 5, the two output shafts are respectively a first output shaft 6 and a second output shaft 1, and the two output shafts are located on the same axis, and the ends of the two output shafts close to each other are respectively provided with two side gears, the two side gears are respectively: a first side gear 3 located on the first output shaft 6 and a second side gear 2 located on the second output shaft 1; the driven gear 5 is arranged at the other end of the first output shaft 6; an input system is used to drive the driven gear 5 alone or two side gears alone; the input system includes an input shaft 4 and a displacement control module, the input shaft 4 is rotated by the input transmission of the engine, the input shaft 4 is arranged perpendicular to the first output shaft 6, the end of the input shaft 4 is provided with a driving gear 10, the driving gear 10 can mesh with the driven gear 5, and the driving gear 10 can mesh with the other side gear, the displacement control module is arranged on the input shaft 4, and is used to drive the input shaft 4 to move, as shown Figure 1 and Figure 2 As shown, the driving gear 10 can be switched between the meshing state with the driven gear 5 and the meshing state with the two side gears; and when the driving gear 10 is meshed with the driven gear 5, the planetary gear 7 is meshed with the two side gears. When the driving gear 10 is displaced between the two side gears and meshes with the two side gears, the planetary gear 7 retracts and separates from the two side gears. The convertible gear structure is located between the first side gear 3 and the second side gear 2, as shown. Figure 3 、 Figure 4 As shown in Figure 5, the convertible gear structure includes: a gear shaft 8, a hydraulic pressure 9 and a planetary gear 7. The gear shaft 8 is a curved shaft, one end of which is connected to one end of the first output shaft 6; the fixed end of the hydraulic pressure 9 is connected to the other end of the gear shaft 8; the shaft of the planetary gear 7 is connected to the telescopic end of the hydraulic pressure 9, and the planetary gear 7 is respectively engaged with the first side shaft gear 3 and the second side shaft gear 2. Figure 1 As shown, when the expander 9 is in normal state, the planetary gear 7 is engaged with the two side gears, and the first output shaft 6 and the second output shaft 1 are driven by the input system to rotate synchronously in the same direction. This state is the normal working state of the differential; Figure 2 As shown, when the telescopic device 9 contracts, the planetary gear 7 and the two side shaft gears are separated, and the driving gear 10 is displaced to the middle of the two side shaft gears. At this time, the first side shaft gear 3 and the second side shaft gear 2 are driven by the input system to rotate synchronously in opposite directions, realizing a U-turn of the vehicle in place.

[0024] In some embodiments, the hydraulic device 9 is a hydraulically driven boom telescopic structure. The hydraulic drive is more stable and facilitates efficient control within the automobile system.

[0025] In some embodiments, the gear shaft 8 is coaxially arranged and integrally formed with the first output shaft 6. This allows the novel planetary gear 7 and gear shaft 8 structure to reduce the risk of steering and drive system failure under extreme or harsh driving conditions, ensuring a more durable and reliable structure.

[0026] Preferably, the hydraulic unit 9 can work synchronously while the input shaft 4 is displacing, which can speed up the speed at which the structure achieves transformation.

[0027] The displacement control module adopts one of mechanical drive or electronic drive. In this embodiment, the displacement control module specifically includes a displacement track, an electric telescopic rod and a telescopic arm. The displacement track is arranged along the direction of the first output shaft 6. The displacement track is equipped with a slider. The electric telescopic rod is fixed at one end of the displacement slide rail and connected to the slider. The slider slides on the displacement slide rail through the extension and contraction of the electric telescopic rod, and a channel is opened in the slider. A bearing is provided in the channel, and the input shaft 6 is arranged in the bearing. The telescopic end of the telescopic arm is connected to the displacement track, and the displacement and feeding of the input shaft 4 are completed by the extension and contraction of the telescopic arm close to the first output shaft 6.

[0028] like Figure 3 and Figure 4 As shown, the gear shaft 8 is a 90° bent shaft.

[0029] The present embodiment is a vehicle differential structure suitable for vehicle turning in place, such as Figure 1 As shown in FIG, when the hydraulic unit 9 is started, the differential is in normal working condition. Figure 2 and Figure 4 As shown, when the hydraulic unit 9 is closed, the differential is in the in-situ U-turn working state. When in use:

[0030] Step 1: The car starts and stops on a level road, and the differential stops rotating;

[0031] Step 2: Press the U-turn button in the car;

[0032] Step 3: The differential stops rotating, and the hydraulic valve in the gear shaft 8, i.e., the hydraulically driven telescopic arm structure, contracts, causing the planetary gear 7 to retract to a preset position, thereby separating the planetary gear 7 from the two half-shaft gears;

[0033] Step 4: At the same time, the input shaft 4 is displaced by the displacement control module and is displaced to a preset position between the second side gear 2 and the first side gear 3, meshing with the two side gears;

[0034] Step 5: The driving gear 10 rotates, and at the same time, the second side gear 2 and the first side gear 3 rotate synchronously in the opposite direction, realizing a U-turn of the vehicle on the spot.

[0035] The above disclosures are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A vehicle differential structure suitable for vehicle turning in place, characterized in that: include: The output system comprises: two output shafts, namely a first output shaft (6) and a second output shaft (1), and the two output shafts are located on the same axis, and the ends of the two output shafts close to each other are respectively provided with two half-shaft gears, the two half-shaft gears being respectively: a first half-shaft gear (3) located on the first output shaft (6) and a second half-shaft gear (2) located on the second output shaft (1); a driven gear (5) is arranged at the other end of the first output shaft (6); An input system for independently driving the driven gear (5) and independently driving the two half-shaft gears; A convertible gear structure is located between a first half-shaft gear (3) and a second half-shaft gear (2). The convertible gear structure comprises: a gear shaft (8) which is a bent shaft, one end of which is connected to one end of a first output shaft (6); a hydraulic actuator (9) whose fixed end is connected to the other end of the gear shaft (8); and a planetary gear (7) whose shaft body is connected to the telescopic end of the hydraulic actuator (9). The planetary gear (7) is respectively engaged with the first half-shaft gear (3) and the second half-shaft gear (2).

2. A vehicle differential structure suitable for vehicle pivoting according to claim 1, characterized in that: The input system includes an input shaft (4) which is rotated by the input transmission of the engine. The input shaft (4) is arranged perpendicular to the first output shaft (6). The end of the input shaft (4) is provided with a driving gear (10), which is meshed with the driven gear (5).

3. The vehicle differential structure suitable for vehicle pivoting according to claim 1, characterized in that: The hydraulic device (9) is a hydraulically driven boom telescopic structure.

4. The vehicle differential structure suitable for vehicle pivoting according to claim 1, characterized in that: The gear shaft (8) and the first output shaft (6) are coaxially arranged and integrally formed.

5. The vehicle differential structure suitable for vehicle pivoting according to claim 2, characterized in that: The input shaft (4) is equipped with a displacement control module, which adopts one of mechanical drive and electric control drive to drive the input shaft (4) to move, so that the driving gear (10) can switch between the meshing state with the driven gear (5) and the meshing state with the two half-shaft gears.

6. The vehicle differential structure suitable for vehicle pivoting according to claim 1, characterized in that: The gear shaft (8) is a 90° bent shaft.

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