阅读说明：本技术 一种汽车变速箱前置电液缓速器结构 (Front electro-hydraulic retarder structure of automobile gearbox ) 是由 黄孝伟 于 2021-08-23 设计创作，主要内容包括：本发明属于电液缓速器技术领域,尤其是一种汽车变速箱前置电液缓速器结构,现提出以下方案,包括传动轴、转子、定子和线圈,所述传动轴转动连接于定子两侧之间的中间位置,且转子固定于传动轴外壁位于定子内的中间位置,所述转子设置成双凸极结构,且定子内位于转子的中间位置固定有线圈,所述定子的壳体外设置有环绕的液流腔,且液流腔的顶端和底端均连接有液流管,所述传动轴位于定子内的中间位置开设有流通腔。本发明使循环液流进入至传动轴和转子的中间位置,一方面通过内部通液而提高降温散热效果,另一方面利用循环液流动与传动轴和转子转动之间的速差,而利用主动液流提高对传动轴和转子的转动进行缓冲以及缓速。(The invention belongs to the technical field of electro-hydraulic retarders, and particularly relates to a front electro-hydraulic retarder structure of an automobile gearbox. According to the invention, the circulating liquid flow enters the middle position of the transmission shaft and the rotor, so that on one hand, the cooling and heat dissipation effects are improved by the internal liquid flow, and on the other hand, the rotation of the transmission shaft and the rotor is buffered and slowed by the active liquid flow by utilizing the speed difference between the circulating liquid flow and the rotation of the transmission shaft and the rotor.)

1. A front electro-hydraulic retarder structure of an automobile gearbox comprises a transmission shaft (1), a rotor (2), a stator (3) and a coil (4), it is characterized in that the transmission shaft (1) is rotationally connected to the middle position between the two sides of the stator (3), and the rotor (2) is fixed on the outer wall of the transmission shaft (1) and is positioned in the middle position in the stator (3), the rotor (2) is arranged into a double salient pole structure, and a coil (4) is fixed in the middle of the rotor (2) in the stator (3), a surrounding liquid flow cavity (5) is arranged outside the shell of the stator (3), the top end and the bottom end of the liquid flow cavity (5) are both connected with a liquid flow pipe (6), the middle position of the transmission shaft (1) in the stator (3) is provided with a flow cavity (7), the circulation cavity (7) is communicated with the liquid flow cavity (5), and the circulation cavity (7) is diffused into the rotor (2).

2. The front electro-hydraulic retarder structure of the automobile gearbox according to claim 1, wherein the stator (3) is provided with a limiting shell (301) and a fixing shell (302) which are of an annular structure, the limiting shell (301) and the fixing shell (302) are both formed by splicing two shells which are of a semi-annular structure, the rotor (2) is arranged inside the limiting shell (301), a liquid flow cavity (5) is formed between the outer wall of the circumference of the limiting shell (301) and the inner wall of the circumference of the fixing shell (302), buffer members (8) distributed in an annular array are rotatably connected between the inner walls of two sides of the liquid flow cavity (5) through bearings, and the buffer members (8) are provided with a buffer shaft and helical blades fixed on the outer wall of the buffer shaft.

3. The front electro-hydraulic retarder structure of the automobile gearbox according to claim 1, wherein the transmission shaft (1) is provided with a connecting cylinder (101) and a fixed cylinder (102), the connecting cylinder (101) is provided with two spliced cylinder members, a cavity is formed in the middle of each cylinder member, the cavities of the two cylinder members form a circulating cavity (7), two ends of each cylinder member are provided with a solid structure, the two ends of the connecting cylinder (101) are fixedly sleeved with the fixed cylinder (102), one end, far away from the connecting cylinder (101), of each fixed cylinder (102) is provided with a solid structure, middle positions of two sides of the stator (3) are provided with a sleeve-shaped structure, positioning bearings (17) are connected between the middle positions of two sides of the stator (3) and two ends of the circumferential outer wall of the transmission shaft (1), and the positioning bearings (17) are located between the connecting cylinder (101) and the fixed cylinder (102).

4. The front electro-hydraulic retarder structure of the automobile gearbox according to any one of claims 1 to 3, wherein a connecting frame (9) with an annular structure is fixed on each of two sides of the rotor (2) in the stator (3), a connecting cavity (901) with an annular structure is arranged in each connecting frame (9), the inner circumferential wall of each connecting frame (9) is provided with an opening, the inner circumferential wall of each connecting frame (9) is provided with a silica gel pad (902), a communicating pipe (10) is connected between the top end and the bottom end of each connecting frame (9) and the liquid flow cavity (5), the outer circumferential wall of the transmission shaft (1) corresponding to the corresponding connecting frame (9) is provided with a connecting groove (18) with an annular structure, the inner circumferential wall of each connecting frame (9) is connected with the inner circumferential wall of the corresponding connecting groove (18) in a sliding manner, the inner circumferential wall of each connecting groove (18) is provided with through grooves (1801) distributed in an annular array manner, the through grooves (1801) on the two connecting grooves (18) are arranged at intervals.

5. The front electrohydraulic retarder structure of the automobile gearbox according to claim 4, wherein the dispersible tablets (11) distributed in an annular array are fixed on the inner wall of the circumference of the connecting cavity (901), the flow collecting grooves (1101) are formed in the middle positions of the inner walls of the two ends of the dispersible tablets (11), the inner diameter of each flow collecting groove (1101) gradually decreases towards the middle position of each dispersible tablet (11), the flow collecting grooves (1101) are formed in the two sides, and the width of each flow collecting groove (1102) gradually increases towards the side away from the flow collecting groove (1101).

6. The front electro-hydraulic retarder structure of the automobile gearbox according to any one of claims 1 to 3, it is characterized in that the rotor (2) is provided with a fixed ring (12) and rotating rings (13) positioned at two sides of the fixed ring (12), and the circumference inner wall of swivel becket (13) and the circumference outer wall fixed connection of transmission shaft (1), leave the clearance between the circumference inner wall of solid fixed ring (12) and the circumference outer wall of transmission shaft (1), the even chamber (1301) of loop configuration is seted up to the inside of swivel becket (13), intercommunicating pore (14) that the annular array distributes are seted up to the position that transmission shaft (1) circumference outer wall corresponds with even chamber (1301), wear groove (1201) that the annular array distributes are seted up to one side outer wall of solid fixed ring (12), even chamber (1301) are close to solid fixed ring (12) one side and wear the position that groove (1201) correspond and seted up a plurality of intercommunication grooves (1302).

7. The front electro-hydraulic retarder structure of the automobile gearbox according to claim 6, wherein guide vanes (15) distributed in an annular array are fixed to positions, corresponding to the fixing rings (12), of the outer circumferential wall of the transmission shaft (1), the guide vanes (15) extend along the axis direction of the transmission shaft (1), the guide vanes (15) penetrate into the circulation cavity (7), guide vanes (16) are fixed to positions, corresponding to the guide vanes (15), of the inner circumferential wall of the fixing rings (12), and the guide vanes (16) penetrate into the through grooves (1201).

8. The structure of the front electro-hydraulic retarder for the automobile gearbox according to claim 7, wherein the two ends of the guide vane (15) along the circumferential surface are provided with protrusions (1501) which are equidistantly distributed in the horizontal direction, the cross section of each protrusion (1501) is arranged in a V-shaped structure, the width of each protrusion (1501) is gradually reduced towards the middle position far away from the guide vane (15), a guide part (1502) is arranged between every two adjacent protrusions (1501), and the guide parts (1502) are arranged in an arc-shaped structure which is arched outwards.

9. The front electro-hydraulic retarder structure of the automobile gearbox according to claim 7, wherein the drainage grooves (1601) are formed in both ends of the drainage sheet (16) along the circumferential surface, the drainage grooves (1601) are distributed at one end close to the transmission shaft (1), the drainage grooves (1601) are distributed at equal intervals along the radial direction of the transmission shaft (1), and the width of the drainage grooves (1601) is gradually reduced from the middle position to both sides.

Technical Field

The invention relates to the technical field of electro-hydraulic retarders, in particular to a front electro-hydraulic retarder structure of an automobile gearbox.

Background

The automobile retarder is that the car when slowing down or long slope down, starts the retarber, can steadily slow down, removes the wearing and tearing that use the brake and cause from and generates heat, and the electro-hydraulic retarder is also called two salient liquid cooling retarber, is that novel eddy current retarder adds water cooling structure and constitutes, and the mountable slows down to the transmission shaft before the gearbox.

The electro-hydraulic retarder structure that prior art generally used, mainly including the casing stator that is used for fixing, rotate the transmission shaft of connecting in the stator intermediate position, be fixed in the transmission shaft outer wall and wrapped up the rotor in the stator, the rotor sets up the middle sunken double round structure, and the intermediate position correspondence that is in the rotor in the stator is provided with the coil, and be provided with the water course outside the stator, utilize the relative rotation of biconvex pole rotor and circular telegram coil to produce the vortex when using and slow down, and bring out the heat through the water route that converts kinetic energy into heat energy from outside circulation, thereby carry out the slow speed of transmission shaft, but the in-process of actually carrying out the use, because the high-speed rotation of transmission shaft, often the liquid stream of outside circulation can't in time bring out the heat and make the rate of thermal decay slow speed effect of actual equipment.

Disclosure of Invention

Based on the technical problem of the background art, the invention provides a front electro-hydraulic retarder structure of an automobile gearbox.

The invention provides a front electro-hydraulic retarder structure of an automobile gearbox, which comprises a transmission shaft, a rotor, a stator and a coil, wherein the transmission shaft is rotatably connected to the middle position between the two sides of the stator, the rotor is fixed on the outer wall of the transmission shaft and is positioned at the middle position in the stator, the rotor is arranged in a double-salient pole structure, the coil is fixed at the middle position of the rotor in the stator, a surrounding liquid flow cavity is arranged outside a shell of the stator, liquid flow pipes are connected to the top end and the bottom end of the liquid flow cavity, a circulation cavity is arranged at the middle position of the transmission shaft in the stator, the circulation cavity is communicated with the liquid flow cavity, and the circulation cavity is diffused into the rotor.

Preferably, the stator is provided with spacing casing and the fixed casing of cyclic annular structure, and spacing casing and fixed casing all set to the casing concatenation of two semi-ring structures and constitute, and the rotor sets up in the inside of spacing casing, constitutes the liquid flow chamber between the circumference outer wall of spacing casing and the circumference inner wall of fixed casing, rotates through the bearing between the both sides inner wall in liquid flow chamber to be connected with the bolster that annular array distributes, and the bolster is provided with the buffer shaft and is fixed in the helical blade of buffer shaft outer wall.

Preferably, the transmission shaft is provided with connecting cylinder and a fixed cylinder, and the connecting cylinder sets up the section of thick bamboo spare of two concatenations, the cavity has been seted up to the intermediate position of section of thick bamboo spare, the cavity of two section of thick bamboos spare constitutes the circulation chamber, solid construction is set to at the both ends of section of thick bamboo spare, the both ends of connecting cylinder all cup joint and are fixed with a fixed cylinder, solid construction is set to the one end that the connecting cylinder was kept away from to the fixed cylinder, the intermediate position of stator both sides sets up set tubular structure, be connected with location bearing between the intermediate position of stator both sides and the both ends of transmission shaft circumference outer wall, location bearing is located the position between connecting cylinder and the fixed cylinder.

Preferably, the both sides that lie in the rotor in the stator all are fixed with the carriage of annular structure, and the inside of carriage is provided with annular structure's connection chamber, the circumference inner wall opening setting of carriage, the circumference inner wall of carriage sets to the silica gel pad, all be connected with communicating pipe between the top of carriage and bottom and the liquid flow chamber, the spread groove of annular structure is seted up to the position that transmission shaft circumference outer wall and carriage correspond, the circumference inner wall of carriage and the circumference inner wall sliding connection of spread groove, the logical groove of annular array distribution is seted up to the circumference inner wall of spread groove, set interval distribution between the logical groove on two spread grooves.

Preferably, the inner wall of the circumference of the connecting cavity is fixed with the dispersible tablets distributed in an annular array, the middle positions of the inner walls of the two ends of the dispersible tablets are respectively provided with a flow collecting groove, the inner diameter of the flow collecting groove gradually decreases towards the middle position of the dispersible tablets, the two sides of the flow collecting groove are respectively provided with a plurality of distributed dispersing grooves, and the width of each dispersing groove gradually increases towards one side far away from the flow collecting groove.

Preferably, the rotor is provided with solid fixed ring and the swivel becket that is located solid fixed ring both sides, and the circumference inner wall of swivel becket and the circumference outer wall fixed connection of transmission shaft, leave the clearance between the circumference inner wall of solid fixed ring and the circumference outer wall of transmission shaft, the even chamber of loop configuration is seted up to the inside of swivel becket, the intercommunicating pore that the annular array distributes is seted up with the position that the even chamber corresponds to transmission shaft circumference outer wall, the cross slot that the annular array distributes is seted up to solid fixed ring's one side outer wall, the even chamber is close to solid fixed ring one side and has seted up a plurality of intercommunication grooves with the position that the cross slot corresponds.

Preferably, the positions of the circumferential outer wall of the transmission shaft corresponding to the fixing rings are fixed with guide vanes distributed in an annular array, the guide vanes extend along the axis direction of the transmission shaft, the guide vanes penetrate into the circulation cavity, the positions of the circumferential inner wall of the fixing rings corresponding to the guide vanes are fixed with guide vanes, and the guide vanes penetrate into the through grooves.

Preferably, the two ends of the guide vane along the circumferential surface are respectively provided with protruding parts which are distributed at equal intervals in the horizontal direction, the cross sections of the protruding parts are arranged to be V-shaped structures, the width of each protruding part is gradually reduced towards the middle position far away from the guide vane, a guide part is arranged between every two adjacent protruding parts, and each guide part is arranged to be an arc-shaped structure which is arched outwards.

Preferably, the drainage groove has all been seted up along the both ends of periphery to the drainage piece, and the drainage groove distributes in the one end that is close to the transmission shaft, and the drainage groove distributes along the radial equidistance of transmission shaft, and the width of drainage groove, the width reduce to both sides from the intermediate position gradually.

The beneficial effects of the invention are as follows:

in the embodiment of the invention, the relative rotation of the double-salient-pole rotor and the coil is utilized to generate eddy current, the rotating liquid flow outside the stator is utilized to dissipate heat, the circulation cavities in the transmission shaft and the rotor are communicated with the liquid flow cavity, when cooling liquid circulates in the liquid flow cavity, the circulating liquid flow enters the middle positions of the transmission shaft and the rotor at the same time, on one hand, the cooling and heat dissipation effects are improved through the internal liquid circulation, the collision effect with the circulating liquid is improved through the rotation of the transmission shaft and the rotor so as to improve the actual cooling and heat attenuation effects, on the other hand, the rotation of the transmission shaft and the rotor is buffered and slowed by the active liquid flow through the speed difference between the circulation liquid flow and the rotation of the transmission shaft and the rotor, so that the actual slowing effect of the equipment is improved.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a front electro-hydraulic retarder structure for an automobile transmission according to the present invention;

FIG. 2 is a schematic cross-sectional structural view of a front electro-hydraulic retarder structure of an automobile transmission provided by the invention;

FIG. 3 is a schematic diagram of an overall explosion structure of a front electro-hydraulic retarder structure of an automobile transmission provided by the invention;

FIG. 4 is a schematic diagram of a stator structure of a front electro-hydraulic retarder structure of an automobile transmission provided by the invention;

FIG. 5 is a schematic diagram of a connection frame structure of a front electro-hydraulic retarder structure of an automobile transmission provided by the invention;

FIG. 6 is a schematic view of a transmission shaft structure of a front electro-hydraulic retarder structure of an automobile transmission provided by the invention;

FIG. 7 is a schematic view of a structure of a flow deflector of a front electro-hydraulic retarder structure for an automobile transmission according to the present invention;

FIG. 8 is a schematic view of a rotor structure of a front electro-hydraulic retarder structure of an automobile transmission provided by the invention;

FIG. 9 is a schematic view of a structure of a drainage plate of a front electro-hydraulic retarder structure of an automobile transmission provided by the invention.

In the figure: 1 transmission shaft, 101 connecting cylinder, 102 fixing cylinder, 2 rotor, 3 stator, 301 spacing shell, 302 fixing shell, 4 coil, 5 liquid flow cavity, 6 liquid flow pipe, 7 flow cavity, 8 buffer, 9 connecting frame, 901 connecting cavity, 902 silica gel pad, 10 communicating pipe, 11 dispersing tablet, 1101 collecting groove, 1102 dispersing groove, 12 fixing ring, 1201 through groove, 13 rotating ring, 1301 dispersing cavity, 1302 communicating groove, 14 communicating hole, 15 flow deflector, 1501 protruding part, 1502 flow guiding part, 16 flow guiding sheet, 1601 flow guiding groove, 17 positioning bearing, 18 connecting groove, 1801 through groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, a front electrohydraulic retarder structure of an automobile transmission case comprises a transmission shaft 1, a rotor 2, a stator 3 and a coil 4, wherein the transmission shaft 1 is rotatably connected to the middle position between two sides of the stator 3, the rotor 2 is fixed on the outer wall of the transmission shaft 1 and is located at the middle position in the stator 3, the rotor 2 is arranged in a double salient pole structure, the coil 4 is fixed in the stator 3 and is located at the middle position of the rotor 2, a surrounding fluid cavity 5 is arranged outside a shell of the stator 3, the top end and the bottom end of the fluid cavity 5 are both connected with a fluid pipe 6, a circulation cavity 7 is arranged at the middle position of the transmission shaft 1 in the stator 3, the circulation cavity 7 is communicated with the fluid cavity 5, the circulation cavity 7 is diffused into the rotor 2, so that in the use process, a vortex is generated by the relative rotation of the double salient pole rotor 2 and the coil 4, and heat is dissipated by the rotating fluid flow outside the stator 3, and with circulation chamber 7 and the intercommunication in transmission shaft 1 and the rotor 2 in the cavity of the liquid flow 5, when circulation coolant liquid in cavity of the liquid flow 5, the circulation liquid stream gets into the intermediate position of transmission shaft 1 and rotor 2 simultaneously, on the one hand, through inside liquid circulation and improve cooling radiating effect, and utilize the rotation of transmission shaft 1 and rotor 2 and improve the collision effect with the circulation liquid, with the cooling heat decay effect that improves reality, on the other hand, utilize the circulation liquid to flow and the transmission shaft 1 and the rotor 2 rotate the speed differential between, and utilize the initiative liquid stream to cushion and slow down the rotation of transmission shaft 1 and rotor 2, thereby improve the actual slow down effect of equipment.

Referring to fig. 3-4, in the present invention, a stator 3 is provided with a limiting shell 301 and a fixed shell 302 having an annular structure, and the limiting shell 301 and the fixed shell 302 are both formed by splicing two semi-annular shells, a rotor 2 is disposed inside the limiting shell 301, a liquid flow cavity 5 is formed between the outer circumferential wall of the limiting shell 301 and the inner circumferential wall of the fixed shell 302, buffer members 8 distributed in an annular array are rotatably connected between the inner side walls of the liquid flow cavity 5 through bearings, the buffer members 8 are provided with a buffer shaft and helical blades fixed on the outer wall of the buffer shaft, the buffer members 8 rotate under the impact of a circulating liquid flow, and guide the circulating liquid flow in the horizontal direction by using the buffer shaft and the helical blades, so as to mechanically buffer a transmission shaft 1 in the horizontal direction, thereby further improving the actual speed buffering effect, and the stator 3 is convenient to install through the detachable structure of the limiting shell 301 and the fixed shell 302, Maintenance and partial part replacement.

Referring to fig. 3 and 6, in the present invention, a transmission shaft 1 is provided with a connecting cylinder 101 and a fixed cylinder 102, the connecting cylinder 101 is provided as two spliced cylinder members, a cavity is provided in the middle of the cylinder members, the cavity of the two cylinder members constitutes a circulation cavity 7, both ends of the cylinder members are provided with solid structures, both ends of the connecting cylinder 101 are fixedly sleeved with the fixed cylinder 102, one end of the fixed cylinder 102 far away from the connecting cylinder 101 is provided with a solid structure, the middle position of both sides of a stator 3 is provided with a sleeve-shaped cylinder structure, a positioning bearing 17 is connected between the middle position of both sides of the stator 3 and both ends of the circumferential outer wall of the transmission shaft 1, the positioning bearing 17 is located between the connecting cylinder 101 and the fixed cylinder 102, thereby the detachable structure of the connecting cylinder 101 and the fixed cylinder 102 is utilized to facilitate the manufacturing, installation and maintenance of the transmission shaft 1, and the position arrangement of the sleeve structures of both ends of the fixed cylinder 102 and the connecting cylinder 101 and the positioning bearing 17 are utilized, the transmission shaft 1 and the rotor 2 are provided with cavities for liquid circulation, and meanwhile, the load strength of the transmission shaft 1 is guaranteed, and the effectiveness of long-time operation of equipment is guaranteed.

Example 2

Embodiment 2 includes all the structures and methods of embodiment 1, referring to fig. 2-3, a front electrohydraulic retarder structure for an automobile transmission, further including a stator 3, a connection frame 9 with a ring structure is fixed on both sides of the rotor 2, a connection cavity 901 with a ring structure is arranged inside the connection frame 9, a circumferential inner wall opening of the connection frame 9 is arranged, a circumferential inner wall of the connection frame 9 is arranged to be a silica gel pad 902, communication pipes 10 are connected between the top end and the bottom end of the connection frame 9 and the flow cavity 5, a connection groove 18 with a ring structure is arranged at a position of the circumferential outer wall of the transmission shaft 1 corresponding to the connection frame 9, the circumferential inner wall of the connection frame 9 is slidably connected with the circumferential inner wall of the connection groove 18, through grooves 1801 distributed in a ring array are arranged on the circumferential inner wall of the connection groove 18, the through grooves 1801 on the two connection grooves 18 are arranged to be spaced apart, and are communicated with the flow cavity 5 through the connection frame 9, and the transmission shaft 1 communicates with the connection cavity 901 through the through groove 18 all the time in the process of rotating relative to the connection frame 9, thereby realizing the liquid flow circulation by the communication between the liquid flow cavity 5 and the circulation cavity 7, and the interval of the through grooves 18 on both sides of the circulation cavity 7 is matched with the rotation of the transmission shaft 1, so that the circulating liquid flow of the liquid flow cavity 5 alternately enters the circulation cavity 7 at intervals and collides from both sides to the middle position, thereby improving the heat exchange effect of the circulating liquid flow and the heat dissipation effect of the internal structure, and further improving the use effect of the actual electro-hydraulic retarder.

Referring to fig. 5, in the present invention, the dispersible tablets 11 distributed in an annular array are fixed on the inner wall of the circumference of the connecting cavity 901, the flow collecting grooves 1101 are formed in the middle positions of the inner walls of the two ends of the dispersible tablets 11, the inner diameter of the flow collecting grooves 1101 gradually decreases toward the middle position of the dispersible tablets 11, a plurality of distributed dispersing grooves 1102 are formed on both sides of the flow collecting grooves 1101, and the width of the dispersing grooves 1102 gradually increases toward the side away from the flow collecting grooves 1101, so that, in the actual use process, the circulating fluid flows collide with the dispersible tablets 11 in the connecting cavity 901 along with the rotation of the transmission shaft 1, the circulating fluid flows toward the middle position of the flow collecting grooves 1101 in the connecting cavity 901 and then disperses to various positions along the dispersing grooves 1102, thereby improving the dispersion flowing effect of the fluid, and the fluid flows at various positions in the transmission shaft 1 and the rotor 2 rapidly and uniformly disperse, thereby improving the buffering and slowing effects on the transmission of the transmission shaft 1 and the heat dissipation in the stator 3, the connection frame 9 is arranged into a shell structure formed by splicing two parts, and the opening and closing direction of the connection frame 9 is perpendicular to the opening direction of the connection cylinder 101, so that the stability of the transmission shaft 1 is improved and the load intensity of the transmission shaft 1 is improved while the installation and maintenance are facilitated.

Example 3

Embodiment 3 includes all the structures and methods of embodiments 1 and 2, referring to fig. 6 and 8, a front electrohydraulic retarder structure for an automobile transmission, further including a rotor 2 having a fixed ring 12 and a rotating ring 13 located at both sides of the fixed ring 12, and a circumferential inner wall of the rotating ring 13 is fixedly connected to a circumferential outer wall of a transmission shaft 1, a gap is left between the circumferential inner wall of the fixed ring 12 and the circumferential outer wall of the transmission shaft 1, an annular-structured uniform cavity 1301 is formed inside the rotating ring 13, communication holes 14 distributed in an annular array are formed at positions of the circumferential outer wall of the transmission shaft 1 corresponding to the uniform cavity 1301, through grooves 1201 distributed in an annular array are formed at an outer wall of one side of the fixed ring 12, a plurality of communication grooves 1302 are formed at positions of the uniform cavity 1301 close to the fixed ring 12 and corresponding to the through grooves 1201, so that a chamber for circulating a circulating liquid to circulate on the rotor 2 is formed by the uniform cavity 1301, the communication grooves 1302 and the through grooves, and the flow collision effect of the circulating liquid flow in the horizontal direction is increased by using the distributed through grooves 1201 and the distributed communicating grooves 1302 corresponding to the positions of the through grooves 1201, so that the horizontal rotation of the transmission shaft 1 and the rotor 2 is buffered and slowed, and the heat attenuation operation is effectively and quickly performed by matching the transmission shaft 1 and the rotor 2, thereby enhancing the actual heat dissipation and slowing effect.

Referring to fig. 6 and 8, in the present invention, guide vanes 15 distributed in an annular array are fixed at positions of the circumferential outer wall of the transmission shaft 1 corresponding to the fixing ring 12, the guide vanes 15 extend along the axial direction of the transmission shaft 1, the guide vanes 15 penetrate into the circulation cavity 7, guide vanes 16 are fixed at positions of the circumferential inner wall of the fixing ring 12 corresponding to the guide vanes 15, the guide vanes 16 penetrate into the through groove 1201, the guide vanes 15 and the guide vanes 16 are both made of a heat conductive material, along with the circulation of a liquid flow, the temperature of the liquid flow in the rotor 2 is higher than the temperature of the transmission shaft 1, so that the temperature of the guide vanes 15 is lower than the temperature of the guide vanes 16, and a temperature difference is generated between the transmission shaft 1 and the fixing ring 12, so as to generate a reverse air flow due to the temperature difference during the rotation of the rotation shaft 1 and the rotor 2, so as to further enhance the speed slowing effect on the transmission shaft 1 and the rotor 2, and the airflow movement drives the vibration of the flow deflector 15 and the flow deflector 16 through the temperature difference so as to improve the uniformity and the speed of heat dissipation and further enhance the actual heat dissipation effect and the speed slowing effect.

Referring to fig. 7, in the present invention, the two ends of the guide vane 15 along the circumferential surface are provided with the protrusions 1501 equidistantly distributed in the horizontal direction, the cross section of each protrusion 1501 is provided with a V-shaped structure, the width of each protrusion 1501 gradually decreases towards the middle position far away from the guide vane 15, a guide portion 1502 is arranged between two adjacent protrusions 1501, and the guide portions 1502 are provided with an outwardly arched arc-shaped structure, so that when the guide vane 15 rotates along with the transmission shaft 1 and vibrates itself, the structure and the matching operation of the protrusions 1501 and the guide portions 1502 are utilized to effectively and uniformly disperse the airflow, thereby further enhancing the actual heat dissipation and speed slowing effect.

Referring to fig. 9, in the present invention, the drainage grooves 1601 are respectively formed at both ends of the drainage sheet 16 along the circumferential surface, and the drainage grooves 1601 are distributed at one end close to the transmission shaft 1, the drainage grooves 1601 are distributed at equal intervals along the radial direction of the transmission shaft 1, and the width of the drainage grooves 1601 is gradually reduced from the middle position to both sides, so that the dispersion effect of the drainage sheet 16 on the air flow during rotation and vibration is improved by using the drainage grooves 1601, and the collision dispersion effect of the air flow is further enhanced by matching with the guidance of the guide sheet 15 on the air flow, thereby further enhancing the heat dissipation effect and the slowing effect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.