A fully automatic all-terrain differential

Abstract

The application relates to the differential production technical field, and discloses a full-automatic all-terrain differential, which comprises a vehicle body and a gearbox mounted on the vehicle body, the bottom of the vehicle body is provided with at least a group of front axle wheel frames and rear axle wheel frames driven by driving pivots, and the gearbox is assembled to drive the front axle wheel frames and the rear axle wheel frames to keep synchronous rotation through the driving pivots. The full-automatic all-terrain differential provided by the application transmits the output power of the gearbox to the differentials in front and rear gearboxes respectively, simultaneously utilizes the torsion and torsion direction of the screw rod shaft and the pinion to pull or release the switching mechanism, so that the pinion on the screw rod shaft moves in the axial direction, the rotation speed of the driving wheel is kept consistent with the rotation speed of the engine, and the vehicle is prevented from sliding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of differential production, in particular to a full-automatic all-terrain differential. BACKGROUND

[0002] At present, the differentials in the world are generally divided into three categories:

[0003] The ordinary differential is also called the open differential;

[0004] The limited slip differential, here is the famous Truetrac differential and some multi-plate friction wheel groups or multi-plate clutch plates and damping oil limited slip, and electronic intervention using the brake to stop the slipping wheel, etc.

[0005] The differential lock differential, here is the pure mechanical type and the electronic intervention type, etc.

[0006] And the above three differentials have their own shortcomings:

[0007] The ordinary differential: in wet and slippery road and muddy road, rugged road, because the power will be unloaded from the slipping wheel.

[0008] The limited slip differential: will produce brake effect on the paved road, so the waste oil, and in the extreme rugged road, all the wheels will not be locked, so it cannot really cross the road.

[0009] The differential lock differential: the operation is complex and easy to operate, and the operation consequence is very serious, only suitable for getting out of trouble, and must be removed immediately after getting out of trouble, otherwise it is easy to break down immediately.

[0010] And the above three different types of differentials cannot be applied to all-terrain, and the use effect is poor, and there is a certain artificial operation design gap, and the artificial subjective judgment has time difference, so it is easy to cause the problem of skidding collision, which seriously affects the life safety of the driver. SUMMARY

[0011] Technical problem to be solved

[0012] The full-automatic all-terrain differential provided by the present application can be applied to different types of terrain and landform structures, realizes full-time four-wheel drive, and simultaneously realizes four-wheel full-time forward differential, and all is completed in an instant.

[0013] Technical scheme

[0014] To solve the above technical problems, the technical scheme adopted by the embodiment of the present application is as follows: a full-automatic all-terrain differential mechanism, comprising a vehicle body and a gearbox mounted on the vehicle body, the bottom of the vehicle body is provided with at least a set of front axle wheel frame and rear axle wheel frame driven by a driving hub, and the gearbox is arranged to drive the front axle wheel frame and the rear axle wheel frame to keep synchronous rotation by the driving hub.

[0015] Preferably, the front axle wheel frame and the rear axle wheel frame respectively comprise a U-shaped bridge and a gear box, both of which are fixedly mounted on the vehicle body and have ports facing the gearbox.

[0016] The gear box is symmetrically provided with a ratchet sleeve clutch mechanism and a hub drive shaft connected with the two ratchet sleeve clutch mechanisms, and the hub drive shaft is arranged to keep the ratchet sleeve clutch mechanism in circumferential motion under the drive of the driving hub.

[0017] Preferably, the ratchet sleeve clutch mechanism comprises symmetrically distributed double-tooth sleeve pipes, symmetrically distributed abutting tooth seats I and II with respect to the centers of the double-tooth sleeve pipes, and short shafts, which are connected in series with the abutting tooth seat I, the double-tooth sleeve pipe, and the abutting tooth seat II in sequence and finally inserted into the port of one end of the hub drive shaft, wherein,

[0018] The tooth ports of the abutting tooth seat I and the abutting tooth seat II are opposite to each other, and when the vehicle body moves forward or backward, only one set of same-side abutting tooth seats is engaged with one set of same-side double-tooth sleeve pipes, and drives the gear box to be close to the inner wall of one side of the U-shaped bridge.

[0019] Preferably, the ports near one end of the two double-tooth sleeve pipes are respectively provided with one-way bearings, wherein the rotation directions of the two one-way bearings are opposite to each other.

[0020] Preferably, the two short shafts are respectively sleeved with friction wheel sets, and the friction wheel sets are arranged on one end of the abutting tooth seat II with respect to the double-tooth sleeve pipe.

[0021] Preferably, the ratchet sleeve clutch mechanism further comprises a sleeve pipe, the double-tooth sleeve pipe is located at the center inside the sleeve pipe, and the abutting tooth seat I and the abutting tooth seat II are respectively located in the ports of opposite ends of the sleeve pipe.

[0022] Preferably, the driving hub comprises a transfer case and a lead screw shaft, the lead screw shaft is rotationally installed on the transfer case in the axial direction, a pinion is threadedly engaged with the lead screw shaft, and the pinion is driven by the gearbox.

[0023] As preferred, the driving hub further comprises a transmission shaft, and a cardan pinion is axially rotatably arranged on the gear box, the cardan pinion is in meshing connection with the hub driving shaft, and the transmission shaft is arranged in transmission connection with the cardan pinion and the lead screw shaft.

[0024] As preferred, a shifting plate is slidably arranged in the transfer box, and one end of the pinion is axially rotatably arranged on the shifting plate.

[0025] The front axle carrier and the rear axle carrier respectively comprise a U-shaped carrier and a gear box, the gear box is arranged inside the U-shaped carrier, a pulling plate I is fixedly arranged on the side wall of one side of the U-shaped carrier, and a base I is arranged on the outer wall of the side of the gear box close to the pulling plate I.

[0026] The switching mechanism further comprises two groups of switching mechanisms, which are respectively arranged on the outer wall of the base I and the transfer box, and the output ends are respectively fixed on the pulling plate I and the shifting plate.

[0027] As preferred, the switching mechanism comprises a pulling wire and a blocking spring, the left and right ends of the pulling wire are respectively fixed on the pulling plate I and the shifting plate, and the blocking spring is used to drive the distance between the pulling plate I and the base I to be kept within a predetermined interval.

[0028] Advantages

[0029] Compared with the prior art, the full-automatic all-terrain differential provided by the embodiment of the present application has the following advantages: the output power of the transmission box is transmitted to the differentials in the front and rear gear boxes, and the switching mechanism is pulled or released by the torsional force and torsional direction of the lead screw shaft and the pinion, so that the pinion moves along the axial direction on the lead screw shaft to realize braking.

[0030] It should be understood that the foregoing general description and the following detailed description are only exemplary and illustrative, but not for limiting the present disclosure.

[0031] The present application file provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0033] Figure 2 It is a schematic diagram of the vehicle body bottom structure of the present application

[0034] Figure 3 It is a schematic diagram of the assembly relationship structure of the U-shaped carrier, the gear box and the ratchet sleeve clutch mechanism of the present application;

[0035] Figure 4The exploded structural schematic diagram of the ratchet sleeve clutch mechanism of the application;

[0036] Figure 5 The structural schematic diagram of the assembly relationship of the double-tooth sleeve, the butt joint tooth seat I, the sleeve and the one-way bearing of the application;

[0037] Figure 6 The structural schematic diagram of the driving hub of the application;

[0038] Figure 7 The structural schematic diagram of the assembly relationship of the driving hub, the switching mechanism and the gearbox of the application.

[0039] In the figure: 1, vehicle body; 2, U-bridge; 21, gear box; 3, ratchet sleeve clutch mechanism; 31, hub driving shaft; 32, butt joint tooth seat I; 33, double-tooth sleeve; 331, one-way bearing; 35, friction wheel group; 34, butt joint tooth seat II; 36, short shaft; 5, driving hub; 52, transfer case; 53, screw shaft; 55, pinion; 6, shift lever; 7, universal joint pinion; 8, sleeve; 80, base I; 81, pull plate I; 9, transmission shaft; 100, gearbox; 200, wire drawing; 201, blocking spring. DETAILED DESCRIPTION

[0040] So that the purposes, technical solutions and advantages of the embodiments of the present disclosure are clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present disclosure.

[0041] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall be understood as the usual meanings understood by those of ordinary skill in the art to which the present disclosure belongs. The similar words such as “include” or “contain” and the like used in the present disclosure mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects. The similar words such as “connect” or “connected” are not limited to physical or mechanical connection, but also include electrical connection, whether direct or indirect. “Up”, “down”, “left”, “right” and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] As Figures 1 to 7As shown in the drawings, the present application provides a kind of full automatic all-terrain differential, including vehicle body 1 and the gearbox 100 of being installed on vehicle body 1, the bottom of vehicle body 1 is provided at least with a group of front axle wheel frame and rear axle wheel frame driven by driving hub 5, gearbox 100 is equipped for by driving hub 5 pivot drive the front axle wheel frame and the rear axle wheel frame / the front axle wheel frame / the rear axle wheel frame keep synchronous rotation.

[0043] As shown in Figure 2 And Figure 3 As shown in the further proposed technical solutions of the present application, the front axle wheel frame and the rear axle wheel frame respectively include U bridge 2 and gear box 21, two U bridge 2 are fixedly installed on vehicle body 1, and the port is towards gearbox 100.And driving hub 5 is transmitted to the power output by gearbox 100 in gear box 21 by transmission shaft 9, to drive the vehicle to advance and retreat.

[0044] Further, according to Figure 3 And Figure 4 It can be known that the above-mentioned scheme is provided with ratchet sleeve clutch mechanism 3 and hub drive shaft 31 for series connection of two ratchet sleeve clutch mechanisms 3 in gear box 21, and universal joint small sector gear 7 is arranged on one end of transmission shaft 9 shaft connected with gear box 21, and the transmission of the whole driving force is realized by the meshing transmission mode of universal joint small sector gear 7 and hub drive shaft 31.

[0045] Further in combination with Figure 4 It can be seen that, in some embodiments, ratchet sleeve clutch mechanism 3 includes symmetrically distributed double-tooth sleeve 33, abutting tooth seat I 32 and abutting tooth seat II 34 symmetrically distributed about the center of the two double-tooth sleeve 33, and short shaft 36, the short shaft 36 in the scheme is sequentially connected with abutting tooth seat I 32, double-tooth sleeve 33 and abutting tooth seat II 34 in series and finally inserted into the port of one end of hub drive shaft 31, and the other end side penetrates U bridge 2 and is connected with wheel 4.

[0046] Furthermore, the tooth port of abutting tooth seat I 32 and abutting tooth seat II 34 in the scheme is mutually inverse, so when vehicle body 1 advances or retreats, only one group of same side abutting tooth seat is engaged with one group of same side double-tooth sleeve 33, and the other group of same side double-tooth sleeve 33 is disengaged, so as to drive the gear box 21 to approach the inner wall of the two sides of U bridge 2 left or right.

[0047] Further, according to Figure 5It can be seen that in the two double-toothed sleeve 33 close to the end of the port are provided with a one-way bearing 331, wherein the two one-way bearing 331 rotation direction is opposite. And two double-toothed sleeve 33 is located in the center of the sleeve 8, and two butt teeth II 34 is respectively inserted into the sleeve 8 two side port with double-toothed sleeve 33 engaged.

[0048] In the above scheme, the short shaft 36 is respectively sleeved with a friction wheel set 35, and the friction wheel set 35 is arranged on the double-toothed sleeve 33 opposite the butt teeth II 34. That is, the friction wheel set 35 is installed on the side wall of the U-bridge 2. The principle is relatively simple, and therefore will not be described in detail.

[0049] As shown in Figure 2 and Figure 7 It is shown that as further proposed in the technical scheme of the application, the driving hub 5 includes a transfer case 52 and a lead screw shaft 53, the lead screw shaft 53 is axially rotatably installed on the transfer case 52, and a pinion 55 is threadedly engaged on the lead screw shaft 53, and the pinion 55 is driven by the transmission 100.

[0050] It should be noted that the transmission 100 can be a diesel engine, a gasoline engine, a hybrid engine, or the like.

[0051] Further in combination with Figure 2 It can be seen that in some embodiments, the two ends of the transmission shaft 9 are respectively connected with the lead screw shaft 53 and the universal joint small sector gear 7, so that the forward and reverse rotation of the transmission 100 can drive the universal joint small sector gear 7 to drive the driving hub driving shaft 31 to rotate.

[0052] Further in combination with Figure 2 and Figure 3 It can be seen that in some embodiments, the side wall of the U-bridge 2 is fixedly installed with a pull plate I 81, and the gear box 21 is installed with a base I 80 on the outer wall of the side close to the pull plate I 81. And the pinion 55 is also provided with a push plate 6, according to Figure 7 It can be seen that the transfer case 52 is also symmetrically provided with a pull plate on one side, and the push plate 6 is located between the two pull plates, and the switching mechanism is driven by the change of the interval between the pull plate I 81 and the base I 80, and the position of the push plate 6 between the two pull plates is driven synchronously, so that the pinion 55 is driven forward or backward along the lead screw shaft 53, so that when the wheel rotation speed is higher than the engine rotation speed, the engine rotation rate is kept synchronous.

[0053] The change of the interval between the pulling plate I81 and the base I80 is mainly caused by the fact that only one group of the same side of the interface tooth seat is engaged with one group of the same side of the double-tooth sleeve 33, while the other group of the same side of the double-tooth sleeve 33 is disengaged when the vehicle body 1 moves forward or backward, so as to drive the gear box 21 to move left or right to the inner wall of the U-shaped bridge 2, and the pulling plate I81 and the base I80 are simultaneously closed or separated, that is, the pulling and releasing of the wire are realized.

[0054] In the embodiment, the optimal structure of the switching mechanism provided by the present application is the wire pulling 200. First, one end of the outer tube of the wire pulling 200 is fixed on the pulling plate I81, and the wire is fixed on the base I80. Then, the other end of the outer tube of the wire pulling 200 is fixed on the wire pulling plate, and the wire is fixed on the dial plate 6. The wire pulling 200 in the above scheme is two groups (i.e. Figure 7 In short, when the car moves forward, one group of the double-tooth sleeve 33 is engaged, and the other group of the double-tooth sleeve 33 is disengaged. At this time, the dial plate 6 is pulled left or right by the wire pulling 200, that is, the pinion 55 is close to the left or right side of the transfer case 52.

[0055] Further, the pulling plate I81 and the base I80 are provided with a blocking spring 201 in the scheme, and the function of the blocking spring 201 is to assist the separation of the pulling plate I81 and the base I80, that is, to keep the maximum opening degree.

[0056] In order to further explain the purpose of the present application, the principle will be discussed through the following specific implementation cases: taking the car moving forward as an example (referring to Figure 2 )

[0057] 1. At this time, the gear box 21 is close to the left inner wall of the U-shaped bridge 2 (the interval between the pulling plate I81 and the base I80 is the smallest), and the pinion 55 is driven to keep close to the front side of the transfer case 52 (that is, the dial plate 6 is close to the upper wire pulling plate) by the action of the switching mechanism;

[0058] 2. At this time, the engine drives the pinion 55 to drive the lead screw shaft 53 to make the ratchet sleeve clutch mechanism 3 drive the wheels 4 to rotate and move forward;

[0059] 3. When the rotation speed of the vehicle wheel 4 is faster than the engine rotation speed, the one-way bearing 331 is acted on, one set of the double-toothed sleeve 33 and the abutting tooth seat I32 are engaged, and the other set of the double-toothed sleeve 33 and the abutting tooth seat I32 are disengaged. At this time, the gear box 21 is abutted against the right inner wall of the U-shaped bridge 2 (i.e. the maximum spacing between the pulling plate I81 and the base I80), is pulled by the pulling wire 200, and the pinion 55 is driven to be kept close to the rear side of the transfer case 52. At this time, the wheel 4 is restricted by the engine to keep the rotation speed of the wheel 4 synchronized, avoiding the problem of coasting.

[0060] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the present application.

Claims

1. A fully automatic all-terrain differential, characterized in that, The vehicle body (1) and the gearbox (100) mounted on the vehicle body (1), the bottom of the vehicle body (1) is provided with at least a set of front axle frame and rear axle frame driven by the driving hub (5), the gearbox (100) is equipped for driving the front axle frame and the rear axle frame / the front axle frame / the rear axle frame to keep synchronous rotation by the driving hub (5); The front axle frame and rear axle frame respectively include U-bridge (2) and gear box (21), two U-bridge (2) are fixedly installed on the vehicle body (1), and the port is towards the gearbox (100); The gear box (21) is provided with a ratchet sleeve clutch mechanism (3) and a hub drive shaft (31) for connecting two ratchet sleeve clutch mechanisms (3) in the symmetry, the hub drive shaft (31) is equipped for driving the ratchet sleeve clutch mechanism (3) to keep the circumferential motion by the driving hub (5); The ratchet sleeve clutch mechanism (3) includes symmetrically distributed double-tooth sleeve (33), butt joint tooth seat I (32) and butt joint tooth seat II (34) and short shaft (36) which are symmetrically distributed about the center of the double-tooth sleeve (33), the short shaft (36) is connected in series with the butt joint tooth seat I (32), double-tooth sleeve (33) and butt joint tooth seat II (34) in turn and finally inserted into the port of one end of the hub drive shaft (31), wherein, The butt joint tooth seat I (32) and the butt joint tooth seat II (34) are opposite to each other, and when the vehicle body (1) advances or retreats, only a group of same side butt joint tooth seats are engaged with a group of same side double-tooth sleeve (33), and drive the gear box (21) to be close to the inner wall of one side of the U-bridge (2); Two one-way bearings (331) are arranged in the port near one end of the double-tooth sleeve (33), wherein the rotation directions of the two one-way bearings (331) are opposite to each other; The ratchet sleeve clutch mechanism (3) further includes a sleeve (8), the double-tooth sleeve (33) is located at the center inside the sleeve (8), and the butt joint tooth seat I (32) and the butt joint tooth seat II (34) are respectively located in the ports of the opposite two ends of the sleeve (8).

2. A full automatic all terrain differential according to claim 1, characterized in that, The friction wheel set (35) is sleeved on the short shaft (36), and the friction wheel set (35) is arranged on one end of the butt joint tooth seat II (34) opposite to the double-tooth sleeve (33).

3. A full automatic all terrain differential as claimed in claim 1, wherein, The driving hub (5) includes a transfer case (52) and a lead screw shaft (53), the lead screw shaft (53) is rotationally installed on the transfer case (52), the lead screw shaft (53) is threadedly engaged with a pinion (55), and the pinion (55) is driven by the gearbox (100).

4. A full automatic all terrain differential according to claim 1, characterized in that, The driving hub (5) further comprises a transmission shaft (9), and a cardan pinion (7) is axially rotatably arranged on the gear box (21), the cardan pinion (7) is in meshing connection with the hub driving shaft (31), and the transmission shaft (9) is arranged to drive the lead screw shaft (53) and the cardan pinion (7).

5. A full automatic all terrain differential as claimed in claim 3 wherein, A shifting plate (6) is slidably arranged in the transfer box (52), and one end of the pinion (55) is axially rotatably arranged on the shifting plate (6); The front axle and the rear axle each comprise a U-shaped axle (2) and a gear box (21), the gear box (21) is arranged inside the U-shaped axle (2), a side wall of the U-shaped axle (2) is fixedly provided with a pulling plate I (81), and an outer wall of the gear box (21) close to the pulling plate I (81) is fixedly provided with a base I (80). Further comprising a switching mechanism, the switching mechanism comprises two groups, and is respectively arranged on the outer wall of the base I (80) and the transfer box (52), and the output end is respectively fixed on the pulling plate I (81) and the shifting plate (6).

6. A full automatic all terrain differential according to claim 5, characterized in that, The switching mechanism comprises a pulling wire (200) and a blocking spring (201), the left and right ends of the pulling wire (200) are respectively fixed on the pulling plate I (81) and the shifting plate (6), and the blocking spring (201) is used to drive the distance between the pulling plate I (81) and the base I (80) to be kept within a predetermined interval.

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