Wheel pivot steering / reverse rotation driving mechanism, driving axle and pivot steering motor vehicle

Abstract

The utility model discloses a wheel pivot steering / reverse rotation driving mechanism, a driving axle and a pivot steering motor vehicle. The wheel pivot steering / reverse rotation driving mechanism comprises a first sun wheel, a second sun wheel, a first planet wheel and a second planet wheel, the first planet wheel and the second planet wheel are parallel to the sun wheels, the first planet wheel is meshed with the first sun wheel, and the second planet wheel is meshed with the second sun wheel. The two planet gears are meshed through the middle part; the inner side part of the output shaft is matched with the second sun gear through a bearing structural part; a driving spline is arranged at the end of the inner side of the output shaft, a double-face coupler is installed on the driving spline in a sliding fit mode, the left end face and the right end face of the double-face coupler are matched with the first sun gear and the second sun gear respectively, and a groove for installing a clutch shifting rod is formed in the middle of the double-face coupler. The utility model discloses a pivot steering motor vehicle drive axle structure. A wheel pivot steering / reverse rotation driving mechanism is arranged on an output shaft on at least one side of the pivot steering motor vehicle drive axle structure. The pivot steering motor vehicle uses the drive axle structure.

Description

Technical Field

[0001] The utility model relates to a stationary steering / reversing motor vehicle drive axle structure, in particular to a wheel stationary steering / reversing driving mechanism and a motor vehicle drive axle and a stationary steering motor vehicle. Background Art

[0002] With the continuous advancement of automobile technology, consumers are increasingly demanding on the functions and performance of automobiles. In order to meet the various usage environments of automobiles, some functions are not only necessary, but also convenient for users to use, improve the operating experience, and enhance the use of automobiles in special occasions. For example, in daily life, weddings, off-roading, and even reversing into a garage, on-the-spot steering technology is needed.

[0003] Some models of some domestic new electric vehicles have adopted the function of turning on the spot. As for the commonly used gasoline or diesel all-wheel drive models, there is still a large market and a large number of them. If these commonly used diesel or automobile all-wheel drive vehicles can be given the function of turning on the spot, it will obviously be welcomed by some consumer audiences and meet the needs of users. The current drive axle structure that realizes the vehicle's turning on the spot is relatively complex and costly. On the one hand, the failure rate and subsequent maintenance and repair costs caused by this are also something that users have to consider.

[0004] Therefore, if an economical, practical, low-cost, simple-to-operate drive axle structure that can realize on-the-spot steering of the vehicle can be designed, it will inevitably promote user demand for such functional vehicles. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, the utility model provides a driving axle structure with simple structure, low cost and simple operation and in-situ steering, and also provides a car using the driving axle structure.

[0006] The technical solution adopted by this utility model:

[0007] A wheel in-situ steering / reversing drive mechanism comprises a mounting housing (20), wherein a first sun gear (21) and a second sun gear (22) are axially arranged in sequence in the mounting housing (20), and a first planetary gear (23) and a second planetary gear (24) are arranged in parallel with the sun gear, wherein the first planetary gear (23) is meshed and connected with the first sun gear (21) via left teeth, and the second planetary gear (24) is meshed and connected with the second sun gear (22) via right teeth; the first planetary gear (23) and the second planetary gear (24) are meshed and connected via middle teeth; an output The inner part of the shaft (25) is mounted in cooperation with the second sun gear (22) via a bearing structure (26); a forward and reverse driving spline shaft head (27) is provided at the inner end of the output shaft (25); a double-sided coupling (28) is mounted on the forward and reverse driving spline shaft head (27) in sliding cooperation with the spline shaft head (27) and connected via a spline; the left and right end faces of the double-sided coupling (28) respectively cooperate with the connecting end faces of the first sun gear (21) and the second sun gear (22); and a groove (281) for connecting and mounting a clutch lever is provided in the middle of the double-sided coupling (28).

[0008] The wheel in-situ steering / reversing driving mechanism, wherein the first sun gear (21) is connected to the double-spline output shaft (3) of the drive axle via a spline; and the outer end of the output shaft (25) connected to the double-sided coupling (28) via the forward and reverse driving spline shaft heads (27) is provided with a spline or spline groove structural member connected to the wheel.

[0009] In the wheel in-situ steering / reversing driving mechanism, the first planetary gear (23) and the second planetary gear (24) are at least one group, or two groups or three groups. When there are two groups or three groups, the planetary gears are respectively meshed with the first sun gear (21) and the second sun gear (22) and are arranged around the first sun gear (21) and the second sun gear (22) in a mounting housing (20) of the reversing driving mechanism.

[0010] A stationary steering motor vehicle drive axle structure, wherein a wheel stationary steering / reversing driving mechanism is arranged on at least one output shaft of the axle, the wheel stationary steering / reversing driving mechanism comprising a first sun gear (21) and a second sun gear (22), wherein the first sun gear (21) and a double spline output shaft (3) of a drive axle body are integrally arranged or connected by spline matching, and the second sun gear (22) is connected to the output shaft (25) via a bearing structure (26); a first planetary gear (23) and a second planetary gear (24) are installed in an installation housing (20) of the wheel stationary steering / reversing driving mechanism, wherein the first planetary gear (23) is connected to the first sun gear via left teeth. (21) meshing connection, the second planetary gear (24) meshing connection with the second sun gear (22) through the right side teeth; the first planetary gear (23) and the second planetary gear (24) meshing connection through the middle part teeth; a forward and reverse driving spline shaft head (27) is provided at the inner end of the output shaft (25), and a double-sided coupling (28) is provided on the forward and reverse driving spline shaft head (27) to slide with it and be connected through a spline, and a groove (281) for installing a clutch lever is provided in the middle of the double-sided coupling (28), and the end faces of both sides of the double-sided coupling (28) are respectively arranged to cooperate with the connecting end faces of the first sun gear (21) and the second sun gear (22).

[0011] In the in-situ steering motor vehicle drive axle structure, the first planetary gear (23) and the second planetary gear (24) are at least one group, or two or three groups. When there are two or three groups of planetary gears, they are respectively meshed with the first sun gear (21) and the second sun gear (22) and are arranged around the first sun gear (21) and the second sun gear (22) in a mounting housing (20) of the reverse drive mechanism.

[0012] A stationary steering motor vehicle, at least the front axle or the rear axle of which uses the aforementioned drive axle structure, is provided in the vehicle body cab with a stationary steering / wheel reversal control clutch, wherein a clutch lever connected to the clutch is connected and installed in cooperation with a groove (281) for installing the clutch lever of a stationary reversal drive mechanism.

[0013] The front and rear axles of the said on-site steering motor vehicle both use the said drive axle structure. Alternatively, a set of on-site steering / reversing drive mechanisms are respectively arranged on the output shafts on both sides of the drive axle.

[0014] Beneficial effects of the utility model:

[0015] 1. The wheel in-situ steering / reversal driving mechanism and the motor vehicle drive axle thereof of the utility model have simple structure and simple operation, and can realize vehicle / wheel in-situ steering / wheel reversal control at a relatively low cost, and are economical, reliable and highly practical.

[0016] 2. The design of the utility model is scientific and reasonable, the scheme is simple and feasible, and the on-site steering control of the vehicle is realized in the simplest and most direct way, overcoming the drawbacks of the current complex technology to achieve simple functions.

[0017] 3. The on-site steering motor vehicle equipped with the drive axle of the utility model makes reverse, forward and storage operations in complex terrain simple and feasible, increases the practical performance, controllability and applicable scenarios of the motor vehicle, and improves the driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure shows a schematic diagram of the structure of the wheel in-situ steering / reversing driving mechanism and the motor vehicle drive axle of the utility model;

[0019] Figure 2 Shown Figure 1 A schematic diagram of the connection state of the first and second planetary gears viewed from the AA direction;

[0020] Figure 3 The figure shows the working state schematic diagram of the sun gear and the planetary gear of the in-situ turning / reversing driving mechanism of the utility model;

[0021] Figure 4 The figure shows a schematic diagram of the normal driving state of the wheel in-situ steering / reversing driving mechanism of the utility model;

[0022] Figure 5 The figure shows a schematic diagram of the on-site steering state of the wheel on-site steering / reversing driving mechanism of the utility model;

[0023] Figure 6 It is a schematic diagram of the connection state of two sets of planetary gears and the sun gear;

[0024] Figure 7 It is the meshing end face of the double-sided coupling and the sun gear (matching the butt surface of the sun gear). DETAILED DESCRIPTION

[0025] In order to make the technical concept and advantages of the utility model creation to achieve its utility model purpose more clear, the technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the following embodiments are only used to explain and illustrate the preferred implementation of the utility model and should not constitute a limitation on the scope of protection of the utility model patent claim. Example

[0026] See also Figure 1-Figure 3The wheel in-situ steering / reversing driving mechanism of the utility model comprises a mounting housing 20, in which a first sun gear 21 and a second sun gear 22 are sequentially arranged axially in the mounting housing 20, and a first planetary gear 23 and a second planetary gear 24 are arranged parallel to the sun gear, wherein the first planetary gear 23 is meshed and connected with the first sun gear 21 through left teeth, and the second planetary gear 24 is meshed and connected with the second sun gear 22 through right teeth; the first planetary gear 23 and the second planetary gear 24 are meshed and connected through middle teeth; the output shaft The inner part of the output shaft 25 is mounted in cooperation with the second sun gear 22 through the bearing structure 26; a forward and reverse driving spline shaft head 27 is provided at the inner end of the output shaft 25, and a double-sided coupling 28 (transmission, and can play a clutch / forward and reverse control role) is installed on the forward and reverse driving spline shaft head 27 in sliding cooperation and through spline connection. The left and right end faces of the double-sided coupling 28 are respectively matched with the connecting end faces of the first sun gear 21 and the second sun gear 22 (designed in conjunction with the coupling); the working end face of the coupling is as shown in FIG. Figure 7 As shown, it is a conventional coupling design (the two sun gears and the relative working surfaces of the coupling are matched with each other in a matching design), except that a groove 281 for connecting and installing a clutch lever is provided in the middle of the double-sided coupling 28 for the purpose of forward and reverse clutch control (implemented by a push-pull rod in conjunction with a shift fork).

[0027] Figure 2 Shown Figure 1 The top view of the AA section. Figure 3 Schematic diagram of the connection and working relationship between the sun gear and the planetary gear; wherein the first planetary gear 23 meshes with the first sun gear 21 through the end teeth, the second planetary gear 24 meshes with the second sun gear 22 through the end teeth, and the first planetary gear 23 and the second planetary gear 24 are meshed and connected through the middle teeth.

[0028] The wheel in-situ steering / reversing drive mechanism, in which the first sun gear 21 is connected to the double-spline output shaft 3 (one side of the drive axle) of the drive axle through the first sun gear connecting spline 32, and the outer end of the output shaft 25 connected to the double-sided coupling 28 (clutch direction selection, transmission function) through the forward and reverse drive spline shaft head 27 is provided with a spline or spline groove structure connected to the wheel. Figure 1 In the figure, reference numeral 1 is the axle body, 11 is the axle housing, 31 is the spline head of the double spline output shaft 3 that matches the differential on one side (butting with the internal spline on the right side of the original differential), the first sun gear connecting spline 32 is interference fit with the first sun gear, and the double spline output shaft 3 and the first sun gear 21 have the same rotation direction. The right wheel is installed at the outer end of the output shaft 25. Example

[0029] See also Figure 1 , Figure 2 , Figure 6The wheel in-situ steering / reversing driving mechanism of this embodiment is different from that of the first embodiment in that the first planetary gear 23 and the second planetary gear 24 are a group of two, and this embodiment uses two groups. The two groups of planetary gears are respectively meshed with the first sun gear 21 and the second sun gear 22 and are arranged in the mounting housing 20 of the reversing driving mechanism around the first sun gear 21 and the second sun gear 22. Figure 3 Only one group is taken as an example to illustrate its working principle.

[0030] The first planetary gear 23 and the second planetary gear 24 may be used in one set or three sets. The purpose of using two or three sets of long planetary gear sets is to increase the torque of the sun gear.

[0031] like Figure 3 As shown, the first planetary gear 23 and the second planetary gear 24 are both long planetary gears. The upper and lower four long planetary gears are divided into two groups, each with two. Only about two-thirds of each long planetary gear has teeth, and the remaining one-third is a light axis. The two long planetary gears are installed one in the positive direction and the other in the negative direction. The two long planetary gears are meshed with the first sun gear and the second sun gear respectively, and the two sun gears realize positive and negative rotation under the action of the two long planetary gears.

[0032] For the stability of the transmission output of the wheel in-situ steering / reversing driving mechanism, an extension portion is provided at one end of the mounting housing 20 connected to the output shaft 25, and the middle portion of the output shaft 25 is mounted in cooperation with the extension portion through a bearing. Example

[0033] See also Figure 1-Figure 5This embodiment is a specific implementation of the in-situ steering motor vehicle drive axle structure. For the motor vehicle drive axle, a wheel in-situ steering / reversing driving mechanism is set on at least one output shaft of the axle, and the wheel in-situ steering / reversing driving mechanism includes a first sun gear 21 and a second sun gear 22, wherein the first sun gear 21 is connected to a double-spline output shaft 3 on one side of the drive axle body 1 through a spline (a first sun gear connecting spline 32), and the second sun gear 22 is connected to the output shaft 25 through a bearing structure 26; a first planetary gear 23 and a second planetary gear 24 are installed in the mounting housing 20 of the wheel in-situ steering / reversing driving mechanism, wherein The first planetary gear 23 is meshed with the first sun gear 21 through the left teeth, and the second planetary gear 24 is meshed with the second sun gear 22 through the right teeth; the first planetary gear 23 and the second planetary gear 24 are meshed with the teeth in the middle part; a forward and reverse driving spline shaft head 27 is provided at the inner end of the output shaft 25, and a double-sided coupling 28 is provided on the forward and reverse driving spline shaft head 27 to slide with it and connect with it through a spline, and a groove 281 for installing a clutch lever is provided in the middle of the double-sided coupling 28, and the end faces of the double-sided coupling 28 are respectively matched with the connecting end faces of the first sun gear 21 and the second sun gear 22. Under the action of the clutch lever, the double-sided coupling 28 can be meshed with the first sun gear 21 and the second sun gear 22 respectively, and the output shaft 25 is driven by the double-sided coupling 28 to realize the power transmission in the forward and reverse directions. In this way, when it is necessary to turn in place, the right wheel and the left wheel move in opposite directions, so that the vehicle turns in place.

[0034] like Figure 4-Figure 5 As shown, only one output shaft on one side is provided with a set of in-situ steering and reversing drive mechanism. Under normal driving state, the first sun gear drives the output shaft 25 through the double-sided coupling 28, and the wheels on both sides rotate forward or reverse to realize forward or reverse. When in-situ steering is required, the double-sided coupling 28 is connected to the right side and meshed with the second sun gear. At this time, the first sun gear is reversed through the two planetary gears, and the second planetary gear is linked with the double-sided coupling 28 through the second sun gear, driving the output shaft to move in the opposite direction. In this way, the left wheel rotates forward and the right wheel reverses, realizing in-situ steering.

[0035] The transition effect is achieved through the ingenious design of the bearing structure 26. During normal driving, the second sun gear idles under the transmission action of the first sun gear and the planetary gears, and the output shaft 25 is connected to the first sun gear through the double-sided coupling 28, driving the right wheel (let's call it the right wheel, only relative to the illustrated implementation method) and the left wheel to rotate in the same direction; when the right wheel needs to reverse / turn on the spot, the output shaft 25 is connected to the second sun gear through the double-sided coupling 28, and the second sun gear drives / drives the output shaft 25 to rotate in the opposite direction through the double-sided coupling 28, synchronously driving the right wheel to reverse.

[0036] The first sun gear 21 and the double-spline output shaft 3 of the drive axle may also be designed as an integral unit.

[0037] As mentioned above, the first planetary gear 23 and the second planetary gear 24 are at least one group, or two groups or three groups. When the planetary gears are two groups or three groups, they are respectively meshed and connected with the first sun gear 21 and the second sun gear 22 and are arranged around the first sun gear 21 and the second sun gear 22 in the mounting housing 20 of the reversing drive mechanism. Example

[0038] The on-site steering motor vehicle drive axle structure of this embodiment is different from that of the third embodiment in that: a set of on-site steering reversing drive mechanisms are respectively arranged on the output shafts on both sides of the axle. Thus, by respectively arranging a set of on-site steering reversing drive mechanisms on the output shafts on both sides of the axle, the left and right wheels can have four state combinations, realizing on-site steering in various directions, and being more convenient and flexible to use.

[0039] Embodiment 5, 6

[0040] These two embodiments are motor vehicles for on-the-spot steering using the aforementioned drive axle structure, wherein at least the front axle or the rear axle uses the drive axle structure as described in Embodiment 3 or Embodiment 4. A clutch for on-the-spot steering / wheel reversal control is provided in the vehicle body cab, and a clutch lever connected to the clutch is connected and installed in cooperation with a groove 281 for installing the clutch lever of the on-the-spot reversal drive mechanism.

[0041] The drive axle structure as described in Example 3 or Example 4 may also be used on both the front axle and the rear axle of the vehicle drive axle.

[0042] The utility model realizes the on-site steering of the vehicle with a simple structure and low cost, is economical and practical, is easy to operate, improves the practical performance and applicable scenarios of the motor vehicle, and can enhance the user's driving experience. The implementation and maintenance costs are low, and the performance is reliable.

[0043] The above description is only a preferred embodiment of the utility model and does not constitute a limitation of the utility model. Under the guidance of the prior art, those skilled in the art can make other modifications to the implementation of the utility model without creative work. Any modification made within the spirit and principle of the utility model or simple replacement or equivalent replacement using conventional technical means in the field shall be included in the protection scope of the utility model.

Claims

1. A wheel in-situ steering / reversing driving mechanism, comprising a mounting housing (20), characterized in that: A first sun gear (21) and a second sun gear (22) are arranged axially in sequence in the mounting housing (20), and a first planetary gear (23) and a second planetary gear (24) are arranged in parallel with the sun gear, wherein the first planetary gear (23) is meshed with the first sun gear (21) via left teeth, and the second planetary gear (24) is meshed with the second sun gear (22) via right teeth; the first planetary gear (23) and the second planetary gear (24) are meshed with each other via teeth in the middle portion; the inner portion of the output shaft (25) is connected via a bearing structure. The component (26) and the second sun gear (22) are mounted in cooperation; a forward and reverse driving spline shaft head (27) is provided at the inner end of the output shaft (25); a double-sided coupling (28) is mounted on the forward and reverse driving spline shaft head (27) in sliding cooperation with the spline shaft head (27) and connected via a spline; the left and right end faces of the double-sided coupling (28) respectively cooperate with the connecting end faces of the first sun gear (21) and the second sun gear (22); and a groove (281) for connecting and mounting a clutch lever is provided in the middle of the double-sided coupling (28).

2. The wheel in-situ turning / reversing driving mechanism according to claim 1, characterized in that: The first sun gear (21) is connected to the double-spline output shaft (3) of the drive axle via a spline; the outer end of the output shaft (25) connected to the double-sided coupling (28) via the forward and reverse driving spline shaft heads (27) is provided with a spline or spline groove structural member connected to the wheel.

3. The wheel in-situ turning / reversing driving mechanism according to claim 1 or 2, characterized in that: The first planetary gear (23) and the second planetary gear (24) are at least one group, or two groups or three groups. When there are two groups or three groups, the planetary gears are respectively meshed with the first sun gear (21) and the second sun gear (22) and are arranged around the first sun gear (21) and the second sun gear (22) in a mounting housing (20) of the reverse drive mechanism.

4. The wheel in-situ turning / reversing driving mechanism according to claim 3, characterized in that: An extension portion is provided at one end of the mounting housing (20) connected to the output shaft (25), and a middle portion of the output shaft (25) is mounted in cooperation with the extension portion via a bearing member.

5. A motor vehicle drive axle, characterized in that: The output shaft on at least one side thereof is provided with a wheel in-situ steering / reversing driving mechanism as claimed in claim 1, wherein the wheel in-situ steering / reversing driving mechanism comprises a first sun gear (21) and a second sun gear (22), wherein the first sun gear (21) and the double-spline output shaft (3) of the drive bridge body are integrally provided or connected by spline matching, and the second sun gear (22) is connected to the output shaft (25) via a bearing structure (26); a first planetary gear (23) and a second planetary gear (24) are installed in a mounting housing (20) of the wheel in-situ steering / reversing driving mechanism, wherein the first planetary gear (23) is connected to the first sun gear (21) via left teeth ) are meshed and connected, the second planetary gear (24) is meshed and connected with the second sun gear (22) through the right teeth; the first planetary gear (23) and the second planetary gear (24) are meshed and connected through the teeth in the middle part; a forward and reverse driving spline shaft head (27) is provided at the inner end of the output shaft (25), and a double-sided coupling (28) is provided on the forward and reverse driving spline shaft head (27) to slide with it and be connected through a spline, and a groove (281) for installing a clutch lever is provided in the middle of the double-sided coupling (28), and the end faces on both sides of the double-sided coupling (28) are respectively arranged to cooperate with the connecting end faces of the first sun gear (21) and the second sun gear (22).

6. The motor vehicle drive axle according to claim 5, characterized in that: The first planetary gear (23) and the second planetary gear (24) are at least one group, or two groups or three groups, respectively meshing with the first sun gear (21) and the second sun gear (22) and arranged around the first sun gear (21) and the second sun gear (22) in a mounting housing (20) of the reverse drive mechanism.

7. The motor vehicle drive axle according to claim 5 or 6, characterized in that: A set of in-situ reverse driving mechanism is respectively arranged on the output shafts on both sides.

8. A motor vehicle capable of turning in situ, characterized in that: At least the front axle or the rear axle uses the motor vehicle drive axle as claimed in claim 5, and a clutch for on-site steering / wheel reversal control is provided in the vehicle body cab, wherein the clutch lever connected to the clutch is connected and installed in cooperation with the groove (281) of the on-site reversal drive mechanism for installing the clutch lever.

9. The on-site steering vehicle according to claim 8, characterized in that: The front axle and the rear axle both use the motor vehicle drive axle as claimed in claim 5.

10. The stationary steering vehicle according to claim 8, characterized in that: A set of in-situ steering / reversing driving mechanism is respectively arranged on the output shafts on both sides of the driving axle.

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