阅读说明：本技术 一种自动紧急制动装置 (Automatic emergency braking device ) 是由 胡建 于 2021-09-13 设计创作，主要内容包括：本发明公开了一种自动紧急制动装置,涉及一种制动装置,包括制动箱,所述制动箱两侧表面开设有轴孔,所述轴孔内部设置有轴套,所述轴套中部设置有轴承；还包括第一传动机构、第二传动机构、第三传动机构和第一制动机构。通过设置有第二制动机构进而使得汽车在遇到紧急的状况使得传动齿轮与传动盘脱离啮合,进而使得传动盘失去动力来源,进而一定程度上降低了汽车的速度,避免了汽车轮胎因速度急降为零而发生侧翻的风险；再通过第二制动机构使得制动块与传动盘接触,进而使得传动盘的更进一步的急剧的降低,直至将汽车的速度在短时间内降低为零,缩短了汽车的刹车距离,保障了驾驶员和他人的生命安全,使用体验感良好。(The invention discloses an automatic emergency braking device, and relates to a braking device, which comprises a braking box, wherein shaft holes are formed in the surfaces of two sides of the braking box, a shaft sleeve is arranged in each shaft hole, and a bearing is arranged in the middle of each shaft sleeve; the brake device further comprises a first transmission mechanism, a second transmission mechanism, a third transmission mechanism and a first brake mechanism. The second brake mechanism is arranged, so that the transmission gear is disengaged from the transmission disc when the automobile meets an emergency, the transmission disc loses a power source, the speed of the automobile is reduced to a certain extent, and the risk of rollover of the automobile tire due to the fact that the speed of the automobile tire is suddenly reduced to zero is avoided; the brake block is contacted with the transmission disc through the second brake mechanism, further sharp reduction of the transmission disc is achieved until the speed of the automobile is reduced to zero in a short time, the brake distance of the automobile is shortened, the life safety of a driver and other people is guaranteed, and the use experience feeling is good.)

1. An automatic emergency braking device, comprising:

the brake box comprises a brake box (1), wherein shaft holes (2) are formed in the surfaces of two sides of the brake box (1), a shaft sleeve (3) is arranged in each shaft hole (2), the shaft sleeve (3) is fixedly connected with the brake box (1), a bearing (4) is arranged in the middle of each shaft sleeve (3), and each bearing (4) is fixedly connected with each shaft sleeve (3); the middle parts of the inner sides of the upper wall and the lower wall of the brake box (1) are provided with a prime mover, and the prime mover is rotationally connected with the brake box (1);

the first transmission mechanism is arranged inside the brake box (1), and is fixedly connected with the inside of the box body of the brake box (1);

the second transmission mechanism is arranged in the brake box (1) and comprises a second fixing plate (14), a first transmission assembly and a reset assembly, the second fixing plate (14) is fixedly connected with the inner wall of the brake box (1) box body, the first transmission assembly is matched with the second fixing plate (14), the reset assembly is arranged on the surface of the first transmission assembly, the reset assembly is matched with a first brake mechanism and comprises a transmission shaft (15) and a transmission gear (16), the transmission shaft (15) is matched with the second fixing plate (14), a limit key (17) is arranged on one end surface of the transmission shaft (15), the limiting key (17) is matched with the connecting shaft (11), the other end of the transmission shaft (15) is fixedly connected with the transmission gear (16), the transmission gear (16) is matched with a third transmission mechanism, a reset assembly is arranged on the surface of the transmission shaft (15), the reset assembly comprises a reset spring (18) and a reset sleeve (19), the reset spring (18) and the reset sleeve (19) are both sleeved on the surface of the transmission shaft (15), one end of the reset spring (18) is fixedly connected with the second fixing plate (14), the other end of the reset spring (18) is fixedly connected with the reset sleeve (19), the other end of the reset sleeve (19) is fixedly connected with the transmission gear (16), and the surface of the reset sleeve (19) is matched with the second braking mechanism;

the third transmission mechanism is arranged in the brake box (1), is fixedly connected with the interior of the box body of the brake box (1), is matched with the shaft sleeve (3), and is matched with the second transmission mechanism;

the brake box comprises a brake box body (1), and is characterized by comprising two groups of first brake mechanisms, wherein the first brake mechanisms are arranged in the brake box body (1).

2. The automatic emergency braking device according to claim 1, wherein the first transmission mechanism comprises a first fixing plate (10), a connecting shaft (11) and a driven bevel gear (12), the first fixing plate (10) is fixedly connected with the inner wall of the box body of the brake box (1), the connecting shaft (11) is rotatably connected with the first fixing plate (10), one end of the connecting shaft (11) is fixedly connected with the driven bevel gear (12), and the driven bevel gear (12) and the other end of the driving mechanism, which is meshed with the connecting shaft (11), are provided with a second transmission mechanism in a matching manner.

3. The automatic emergency braking device according to claim 1, characterized in that said third transmission mechanism comprises a third fixing plate (26) and a second transmission assembly, said third fixing plate (26) is fixedly connected with the inner wall of the braking box (1) box body, said second transmission assembly is matched with the third fixing plate (26), said second transmission assembly is matched with the shaft sleeve (3) and the transmission gear (16).

4. The automatic emergency braking device according to claim 3, wherein the second transmission assembly comprises a transverse shaft (27) and a transmission disc (28), a tooth socket (29) is formed in one end face of the transmission disc (28), the tooth socket (29) is matched with the transmission gear (16), a connecting seat (30) is arranged in the middle of the other end face of the transmission disc (28), the connecting seat (30) is fixedly connected with the transverse shaft (27), one end of the transverse shaft (27) extends out of a box body of the brake box (1), the surface of the transverse shaft (27) is matched with the shaft sleeve (3) and the bearing (4), and the transmission disc (28) is matched with the first brake mechanism.

5. The automatic emergency braking device according to claim 1, characterized in that said first braking means comprises a fixed component, a hydraulic component and a braking component, said fixed component is fixedly connected with the inner wall of the box body of said braking box (1), said hydraulic component is arranged on the surface of the fixed component, said hydraulic component is electrically connected with said motive power mechanism, and said braking component is matched with said fixed component and the driving disk (28).

6. The automatic emergency braking device according to claim 5, wherein the fixing component comprises a fixing seat (31), a connecting rod (32) and a transverse plate (33), the fixing seat (31) is fixedly connected with the inner wall of the brake box (1) box body, one end of the connecting rod (32) is fixedly connected with the fixing seat (31), the other end of the connecting rod (32) is fixedly connected with the transverse plate (33), a groove (34) is formed in the lower surface of the transverse plate (33), two grooves (34) are formed in each groove (34), and the two grooves (34) are bilaterally symmetrical.

7. The automatic emergency braking device according to claim 6, wherein the hydraulic assembly comprises a first shaft controller (35) and a first hydraulic telescopic shaft (36), the first shaft controller (35) is disposed on an upper surface of the cross plate (33), and the first shaft controller (35) is electrically connected with the motive power mechanism; the first hydraulic telescopic shaft (36) is arranged in the groove (34), and the first hydraulic telescopic shaft (36) is electrically connected with the first shaft controller (35).

Technical Field

The invention relates to a braking device, in particular to an automatic emergency braking device.

Background

With the rapid development of economy and the continuous progress of society, the quantity of motor vehicles kept is continuously increased, and along with the increase of the number of road traffic accidents, the number of road traffic accidents is increased year by year. The poor braking effect becomes one of the main causes of a large number of rear-end collisions and collision accidents, and particularly under the condition of bad driving conditions, such as heavy fog, rain or road icing, the driver often has too long braking distance due to untimely operation or insufficient adhesion force provided by the road surface, so that the accidents are difficult to avoid. How to shorten the braking distance under the emergency braking condition and improve the braking effect, and reduce the result brought by the traffic accident to the greatest extent becomes the problem to be solved urgently. To this end, the person skilled in the art proposes an automatic emergency braking device to solve the problems set forth in the background above.

Disclosure of Invention

The present invention is directed to an automatic emergency braking device to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

an automatic emergency braking device comprising:

the brake box is characterized in that shaft holes are formed in the surfaces of two sides of the brake box, a shaft sleeve is arranged in each shaft hole, the shaft sleeve is fixedly connected with the brake box, a bearing is arranged in the middle of the shaft sleeve, and the bearing is fixedly connected with the shaft sleeve; the middle parts of the inner sides of the upper wall and the lower wall of the brake box are provided with a prime mover, and the prime mover is rotationally connected with the brake box;

the first transmission mechanism is arranged inside the brake box and fixedly connected with the inside of the box body of the brake box;

the second transmission mechanism is arranged in the brake box and fixedly connected with the interior of the brake box body, the second transmission mechanism is matched with the first transmission mechanism and comprises a second fixed plate, a first transmission assembly and a reset assembly, the second fixed plate is fixedly connected with the inner wall of the brake box body, the first transmission assembly is matched with the second fixed plate, the reset assembly is arranged on the surface of the first transmission assembly, the reset assembly is matched with the first brake mechanism and comprises a transmission shaft and a transmission gear, the transmission shaft is matched with the second fixed plate, a limit key is arranged on the surface of one end of the transmission shaft, the limit key is matched with the connecting shaft, and the other end of the transmission shaft is fixedly connected with the transmission gear, the transmission gear is matched with a third transmission mechanism, a reset assembly is arranged on the surface of the transmission shaft, the reset assembly comprises a reset spring and a reset sleeve, the reset spring and the reset sleeve are both sleeved on the surface of the transmission shaft, one end of the reset spring is fixedly connected with the second fixing plate, the other end of the reset spring is fixedly connected with the reset sleeve, the other end of the reset sleeve is fixedly connected with the transmission gear, and the surface of the reset sleeve is matched with the second brake mechanism;

the third transmission mechanism is arranged in the brake box and fixedly connected with the interior of the box body of the brake box, and is matched with the shaft sleeve and the second transmission mechanism;

the first brake mechanism is arranged in the brake box, and the first brake mechanism is provided with two groups.

As a further scheme of the invention: the first transmission mechanism comprises a first fixing plate, a connecting shaft and a driven bevel gear, the first fixing plate is fixedly connected with the inner wall of the box body of the brake box, the connecting shaft is rotatably connected with the first fixing plate, one end of the connecting shaft is fixedly connected with the driven bevel gear, and the driven bevel gear and the other end of the driving mechanism, which is meshed with the connecting shaft, are matched with a second transmission mechanism.

As a still further scheme of the invention: the third transmission mechanism comprises a third fixing plate and a second transmission assembly, the third fixing plate is fixedly connected with the inner wall of the brake box body, the second transmission assembly is matched with the third fixing plate, and the second transmission assembly is matched with the shaft sleeve and the transmission gear.

As a still further scheme of the invention: the second transmission assembly comprises a cross shaft and a transmission disc, a tooth socket is formed in one side end face of the transmission disc and matched with the transmission gear, a connecting seat is arranged in the middle of the other end face of the transmission disc and fixedly connected with the cross shaft, one end of the cross shaft extends out of the box body of the brake box, the surface of the cross shaft is matched with the shaft sleeve and the bearing, and the transmission disc is matched with the first brake mechanism.

As a still further scheme of the invention: first arrestment mechanism includes fixed subassembly, hydraulic assembly and brake assembly, fixed subassembly with brake box inner wall fixed connection, hydraulic assembly sets up in fixed subassembly's surface, hydraulic assembly with prime motor structure electricity is connected, brake assembly with fixed subassembly and driving disc cooperation.

As a still further scheme of the invention: the fixing assembly comprises a fixing seat, a connecting rod and a transverse plate, the fixing seat is fixedly connected with the inner wall of the brake box body, one end of the connecting rod is fixedly connected with the fixing seat, the other end of the connecting rod is fixedly connected with the transverse plate, a groove is formed in the lower surface of the transverse plate, the groove is formed in the lower surface of the transverse plate, and the two grooves are bilaterally symmetrical.

As a still further scheme of the invention: the hydraulic assembly comprises a first shaft controller and a first hydraulic telescopic shaft, the first shaft controller is arranged on the upper surface of the transverse plate, and the first shaft controller is electrically connected with the prime power mechanism; the first hydraulic telescopic shaft is arranged inside the groove and electrically connected with the first shaft controller.

Compared with the prior art, the invention has the beneficial effects that: the device is simple to operate, and the transmission gear and the transmission disc are disengaged when the automobile meets an emergency condition by arranging the second brake mechanism, so that the transmission disc loses a power source, the speed of the automobile is reduced to a certain extent, and the risk of rollover of the automobile tire due to the fact that the speed is suddenly reduced to zero is avoided; the brake block is contacted with the transmission disc through the second brake mechanism, further sharp reduction of the transmission disc is achieved until the speed of the automobile is reduced to zero in a short time, the brake distance of the automobile is shortened, the life safety of a driver and other people is guaranteed, and the use experience feeling is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of an automatic emergency braking device;

FIG. 2 is a schematic view showing a part of a structure of an automatic emergency brake apparatus;

FIG. 3 is an enlarged view of a portion of the structure at A of the automatic emergency braking device;

FIG. 4 is an enlarged view of a portion of the structure at B of the automatic emergency braking device;

FIG. 5 is an enlarged view of a portion of the structure at C of the automatic emergency braking device;

in the figure: 1. a brake box; 2. a shaft hole; 3. a shaft sleeve; 4. a bearing; 5. a horizontal chute; 6. a vertical plate; 7. a prime shaft; 8. a drive bevel gear; 9. a speed sensor; 10. a first fixing plate; 11. a connecting shaft; 12. a driven bevel gear; 13. a keyway; 14. a second fixing plate; 15. a drive shaft; 16. a transmission gear; 17. a limiting key; 18. a return spring; 19. a reset sleeve; 20. a longitudinal plate; 21. a second hydraulic telescopic shaft; 22. a second shaft controller; 23. a slider; 24. a connecting plate; 25. a U-shaped plate; 26. a third fixing plate; 27. a horizontal axis; 28. a drive plate; 29. a tooth socket; 30. a connecting seat; 31. a fixed seat; 32. a connecting rod; 33. a transverse plate; 34. a groove; 35. a first shaft controller; 36. a first hydraulic telescopic shaft; 37. a brake pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example (b): referring to fig. 1-5, an automatic emergency braking device includes:

the brake box comprises a brake box 1, wherein shaft holes 2 are formed in the surfaces of two sides of the brake box 1, a shaft sleeve 3 is arranged in each shaft hole 2, the shaft sleeve 3 is fixedly connected with the brake box 1, a bearing 4 is arranged in the middle of each shaft sleeve 3, and each bearing 4 is fixedly connected with the shaft sleeve 3; the middle parts of the inner sides of the upper wall and the lower wall of the brake box 1 are provided with a prime mover, and the prime mover is rotationally connected with the brake box 1; the upper surface of the brake box 1 is also provided with a transverse sliding chute 5;

the driving mechanism comprises a vertical plate 6, a driving shaft 7 and a driving bevel gear 8, the vertical plate 6 is arranged inside the brake box 1, two ends of the vertical plate 6 are fixedly connected with the upper wall and the lower wall of the brake box 1, the middle part of the vertical plate 6 is rotatably connected with the driving shaft, one end of the driving shaft is fixedly connected with the output end of a motor, the other end of the driving shaft is fixedly connected with the driving bevel gear 8, a speed sensor 9 is arranged on the surface of the vertical plate 6, and the speed sensor 9 is used for detecting the angular speed of the driving bevel gear 8; the prime mechanism is used for transmitting mechanical energy to the first transmission mechanism;

the material of the driving shaft is carbon steel, preferably medium carbon steel, and because shaft parts in the automobile are mainly used for supporting a revolving body and transmitting power, and working conditions generally bear alternating torque and tension and compression loads, the shaft neck and the key part bear larger friction and abrasion, the failure mode is mainly fracture and local excessive abrasion, and the material when in material selection has enough strength, rigidity and certain toughness, good wear resistance, high fatigue strength and good cutting processability; however, low carbon steel is not suitable for use as shaft parts in automobiles because it has low strength and hardness although it has good plasticity; the high-carbon steel has poor plasticity, high hardness, poor fatigue strength, poor cutting processability, and insufficient toughness and easy breakage when being used as a shaft part, so the high-carbon steel is not suitable to be used as a manufacturing material of the shaft part; it is recommended to select alloy quenched and tempered steel (belonging to the category of medium carbon steel), and the general quenched and tempered steel has poor hardenability and low mechanical property, and is only suitable for parts with smaller size and lighter load. The alloy elements in the alloy-prepared steel can improve the hardenability, obviously enhance the hardening surface effect of heat treatment such as quenching and the like, and do not reduce the core toughness. The alloy quenched and tempered steel has high strength, high wear resistance and good plastic toughness after heat treatment (quenching and tempering), namely has good comprehensive mechanical properties.

The first transmission mechanism is arranged inside the brake box 1 and fixedly connected with the inside of the box body of the brake box 1; the first transmission mechanism is used for transmitting the kinetic energy to the second transmission mechanism;

the second transmission mechanism is arranged inside the brake box 1, is fixedly connected with the inside of the box body of the brake box 1, and is matched with the first transmission mechanism; the second transmission mechanism is used for transmitting the kinetic energy to the third transmission mechanism;

the third transmission mechanism is arranged inside the brake box 1, is fixedly connected with the inside of the box body of the brake box 1, is matched with the shaft sleeve 3 and is matched with the second transmission mechanism; the third transmission mechanism is used for transmitting kinetic energy to the tire of the automobile;

the first brake mechanisms are arranged inside the brake box 1, two groups of the first brake mechanisms are arranged, the rotating mechanism is fixedly connected with the brake box 1, and the rotating mechanism is matched with the third transmission mechanism; the first brake mechanism is used for emergency braking of the drive disk 28.

Referring to fig. 1 and 5, further, the first transmission mechanism includes a first fixing plate 10, a connecting shaft 11 and a driven bevel gear 12, the first fixing plate 10 is fixedly connected with the inner wall of the box body of the brake box 1, the connecting shaft 11 is rotatably connected with the first fixing plate 10, one end of the connecting shaft 11 is fixedly connected with the driven bevel gear 12, and the driven bevel gear 12 and the driving mechanism are engaged with a second transmission mechanism at the other end of the connecting shaft 11; a key groove 13 is further formed in one end of the connecting shaft 11, and the length of the key groove 13 is eight tenths of the length of the connecting shaft 11;

the connecting shaft 11 is also made of alloy quenched and tempered steel (belonging to the category of medium carbon steel), and the general quenched and tempered steel has poor hardenability and low mechanical property, and is only suitable for parts with smaller size and lighter load. The alloy elements in the alloy-prepared steel can improve the hardenability, obviously enhance the hardening surface effect of heat treatment such as quenching and the like, and do not reduce the core toughness. The alloy quenched and tempered steel has the advantages that after heat treatment (quenching and tempering) the alloy quenched and tempered steel has high strength and high wear resistance and is matched with good plastic toughness, namely the alloy quenched and tempered steel has good comprehensive mechanical properties;

the connecting mode of the connecting shaft 11 and the driven bevel gear 12 is welding, welding is a processing mode of filling or not filling welding materials by heating, pressurizing or a method of combining the heating and pressurizing or the heating and pressurizing, so that two or more kinds of metals of the same kind or different kinds are combined and diffused through atoms to form a connected integral structure, and the welding has the following advantages: the connecting performance is good, the welding structure is high in rigidity, the integrity is good, the welding methods are various, and the welding process is wide in adaptability, so that the connecting shaft 11 and the driven bevel gear 12 are connected more stably by welding, and further, the transmission is more stable, and the energy loss is reduced.

Referring to fig. 1, further, the second transmission mechanism includes a second fixing plate 14, a first transmission assembly and a reset assembly, the second fixing plate 14 is fixedly connected to an inner wall of the box body of the brake box 1, the first transmission assembly is matched with the second fixing plate 14, the reset assembly is disposed on a surface of the first transmission assembly, and the reset assembly is matched with the first brake mechanism.

Referring to fig. 1 and 2, further, the first transmission assembly includes a transmission shaft 15 and a transmission gear 16, the transmission shaft 15 is matched with the second fixing plate 14, a limiting key 17 is arranged on a surface of one end of the transmission shaft 15, the limiting key 17 is matched with the key groove 13, the other end of the transmission shaft 15 is fixedly connected with the transmission gear 16, the transmission gear 16 is matched with a third transmission mechanism, and a reset assembly is arranged on a surface of the transmission shaft 15; the length of the limiting key 17 is consistent with that of the limiting groove;

the transmission shaft 15 is also made of alloy quenched and tempered steel (belonging to the category of medium carbon steel), and the common quenched and tempered steel has poor hardenability and low mechanical property and is only suitable for parts with smaller size and lighter load. The alloy elements in the alloy quenched and tempered steel can improve the hardenability, obviously enhance the hardened surface effect of heat treatment such as quenching and the like without reducing the core toughness, and the alloy quenched and tempered steel has the combination of high strength, high wear resistance and good plastic toughness after heat treatment (quenching and tempering), namely has good comprehensive mechanical properties.

Referring to fig. 1, 2 and 4, further, the reset assembly includes a reset spring 18 and a reset sleeve 19, the reset spring 18 and the reset sleeve 19 are both sleeved on the surface of the transmission shaft 15, one end of the reset spring 18 is fixedly connected with the second fixing plate 14, the other end of the reset spring 18 is fixedly connected with the reset sleeve 19, the other end of the reset sleeve 19 is fixedly connected with the transmission gear 16, and the surface of the reset sleeve 19 is matched with the second brake mechanism.

The second brake mechanism comprises a pushing assembly and a connecting assembly, the pushing assembly is fixedly connected with the inner wall of the box body of the brake box 1, the pushing assembly is also electrically connected with the speed sensor 9, the connecting assembly is fixedly connected with the pushing assembly, and the connecting assembly is also fixedly connected with the resetting assembly;

the pushing assembly comprises a longitudinal plate 20, a second hydraulic telescopic shaft 21 and a second shaft controller 22, the longitudinal plate 20 is fixedly connected with the inner wall of the box body of the brake box 1, the second shaft controller 22 is arranged on the surface of the longitudinal plate 20, the second shaft controller 22 is electrically connected with the speed sensor, and the second shaft controller 22 is used for controlling the start and stop of the second hydraulic telescopic shaft 21; the second hydraulic telescopic shaft 21 is arranged on the other end face of the longitudinal plate 20, and the other end of the second hydraulic telescopic shaft 21 is fixedly connected with the connecting component;

coupling assembling includes sliding block 23, connecting plate 24 and U-shaped plate 25, sliding block 23 and 5 sliding fit in sideslip groove, 24 one end of connecting plate and 23 fixed connection of sliding block, the 24 other ends of connecting plate and 25 fixed connection of U-shaped plate, 24 surfaces of connecting plate with second hydraulic stretching axle 21 fixed connection, U-shaped plate 25 and the 19 cooperations of cover that reset make transmission gear 16 and transmission dish 28 within a definite time more stable through the cooperation between sideslip groove 5 and sliding block 23, have reduced the loss of kinetic energy, have improved the efficiency of the transmission of energy to a certain extent.

Referring to fig. 1, further, the third transmission mechanism includes a third fixing plate 26 and a second transmission assembly, the third fixing plate 26 is fixedly connected to the inner wall of the box body of the brake box 1, the second transmission assembly is matched with the third fixing plate 26, and the second transmission assembly is matched with the shaft sleeve 3 and the transmission gear 16.

Referring to fig. 1 and 2, further, the second transmission assembly includes a transverse shaft 27 and a transmission disc 28, a tooth socket 29 is formed on an end surface of one side of the transmission disc 28, the tooth socket 29 is matched with the transmission gear 16, a connection seat 30 is arranged in the middle of the other end surface of the transmission disc 28, the connection seat 30 is fixedly connected with the transverse shaft 27, one end of the transverse shaft 27 extends out of the box body of the brake box 1, the surface of the transverse shaft 27 is matched with the shaft sleeve 3 and the bearing 4, and the transmission disc 28 is matched with the first brake mechanism.

Referring to fig. 1 and 3, further, the first braking mechanism includes a fixing component, a hydraulic component and a braking component, the fixing component is fixedly connected with an inner wall of a box body of the braking box 1, the hydraulic component is disposed on a surface of the fixing component, the hydraulic component is electrically connected with the driving mechanism, and the braking component is matched with the fixing component and the transmission disc 28.

Further, the fixed subassembly includes fixing base 31, connecting rod 32 and diaphragm 33, fixing base 31 with 1 box inner wall fixed connection of brake box, connecting rod 32 one end with fixing base 31 fixed connection, the connecting rod 32 other end with diaphragm 33 fixed connection, the recess 34 has been seted up to diaphragm 33 lower surface, two have been seted up to recess 34, and two recess 34 bilateral symmetry.

Further, the hydraulic assembly comprises a first shaft controller 35 and a first hydraulic telescopic shaft 36, the first shaft controller 35 is arranged on the upper surface of the transverse plate 33, and the first shaft controller 35 is electrically connected with the motive power mechanism; the first hydraulic telescopic shaft 36 is disposed inside the groove 34, and the first hydraulic telescopic shaft 36 is electrically connected to the first shaft controller 35.

The brake assembly comprises a brake block 37, the brake block 37 is fixedly connected with the first hydraulic telescopic shaft 36, and the brake block 37 is slidably connected with the groove 34; the material of the brake block 37 is powder metallurgy friction material. The material is made up by mixing iron-base and copper-base powder materials, pressing and sintering at high temp., and is suitable for braking and driving at higher temp. and its service life is long.

The working principle of the invention is as follows: when the automobile is in a normal driving state, the transmission gear 16 and the transmission disc 28 are always in a meshed state, when the automobile is braked in an emergency, the drive bevel gear 8 stops rotating, the speed sensor 9 senses that the rotating speed of the drive bevel gear 8 changes sharply, and the speed sensor 9 sends corresponding instructions to the first shaft controller 35 and the second shaft controller 22 respectively; the second hydraulic telescopic shaft 21 is controlled by the second shaft controller 22 to be shortened, so that the transmission gear 16 is separated from the transmission disc 28 through some parts, the transmission disc 28 loses a power source, the rotating speed of a transverse shaft 27 fixedly connected with the transmission disc 28 is reduced to a certain extent, and the speed of the automobile is reduced; the first shaft controller 35 receives the instruction and then controls the first hydraulic telescopic shaft 36 to start, the first hydraulic telescopic shaft 36 pushes the brake block 37 to move, the brake block 37 tightens the transmission disc 28, the rotating speed of the transmission disc 28 is reduced to a great extent, the speed of the automobile is reduced to a great extent, and emergency braking is achieved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.