CN221423814U - Bevel gear transmission structure and vehicle - Google Patents

Abstract

The application provides a bevel gear transmission structure and a vehicle, and belongs to the technical field of automobile accessories, wherein the bevel gear transmission structure comprises a planetary shell, an input unit and an output unit which are coaxial with the planetary shell and are rotationally connected, and a planetary bevel gear connected between the input unit and the output unit; the planetary bevel gear is rotationally connected with the planetary shell through a second connecting piece; the second connecting piece comprises a second main body part, a second locking part and a second bearing; the planetary shell is provided with a mounting hole, and the second main body part penetrates through the mounting hole and can axially move relative to the mounting hole; the second bearing is arranged inside the second main body part and is connected with the planetary bevel gear; the second locking part is used for fixing the second main body part and the planetary shell. According to the bevel gear transmission structure, the second connecting piece is arranged, so that position adjustment of the planetary bevel gear can be realized during assembly, the fit clearance of the gear and the gear ring can be eliminated, and the assembly convenience is improved.

Description

Bevel gear transmission structure and vehicle

Technical Field

The application relates to the technical field of automobile accessories, in particular to a bevel gear transmission structure and a vehicle.

Background

The commercial vehicle steering gear needs to adopt a large transmission ratio to provide larger steering force, and the number of turns of the steering wheel is increased along with the increase of the transmission ratio of the steering gear. In order to improve the operability of the vehicle, a coaxial bevel gear transmission structure can be adopted, and the transmission ratio can be adjusted by combining a steering gear, so that a proper number of turns of a steering wheel can be provided, and the purpose of improving the steering performance of the vehicle can be achieved.

The existing bevel gear transmission structure is characterized in that an input bevel gear ring is axially arranged in a planetary shell, the planetary bevel gear is arranged on the inner wall of the planetary shell through a mounting base and meshed with the input bevel gear ring, when the planetary bevel gear transmission structure is assembled, the mounting position of the planetary bevel gear cannot be adjusted, the matching of a gear ring can be adjusted only by adjusting the mounting height of the input bevel gear ring from the axial direction, the assembly difficulty is high, the matching clearance is difficult to eliminate, and the normal operation of a product is finally influenced.

Disclosure of utility model

In view of the above, the present application aims to provide a bevel gear transmission structure, so as to solve the problems of incapability of adjusting the installation position of a planetary bevel gear and high assembly difficulty in the prior art.

In order to achieve the above purpose, the technical scheme of the application is realized as follows:

A bevel gear transmission structure comprises a planetary shell, an input unit, an output unit and a planetary bevel gear;

The input unit, the output unit and the planetary shell are coaxially arranged, and the planetary bevel gear is connected between the input unit and the output unit and used for transmitting the torque of the input unit to the output unit; the input unit is rotationally connected with the planetary shell through a first connecting piece; the planetary bevel gear is positioned in the planetary shell and is rotationally connected with the planetary shell through a second connecting piece;

the second connecting piece comprises a second main body part, a second locking part and a second bearing;

The planet shell is provided with a mounting hole, and the second main body part penetrates through the mounting hole and can axially move relative to the mounting hole; the second bearing is arranged in the second main body part and is connected with a gear shaft of the planetary bevel gear; the second locking part is positioned at the outer side of the planetary shell, connected with the second main body part and used for limiting the depth of the second main body part penetrating through the mounting hole and fixing the second main body part and the planetary shell.

Further, the mounting hole is a threaded hole, and the second main body part passes through the mounting hole to be in threaded connection with the planetary shell; the second locking part is sleeved on the periphery of the second main body part and is in threaded connection with the second main body part, and the end face of the second locking part is abutted against the outer wall of the planetary shell.

Further, the first connecting piece comprises a first main body part, a first locking part and a first bearing;

The first main body part is arranged at one end of the planetary shell and is positioned at the inner side of the planetary shell and can axially move relative to the planetary shell; the first bearing is arranged in the first main body part and connected with the input unit; the first locking part is positioned at the outer side of the planetary shell, connected with the first main body part and used for limiting the depth of the first main body part extending into the planetary shell and fixing the first main body part and the planetary shell.

The first main body part is in threaded connection with the planetary shell, the first locking part is sleeved on the periphery of the first main body part and in threaded connection with the first main body part, and the end face of the first locking part is abutted to the end face of the planetary shell.

Further, two planetary bevel gears are arranged, and the two planetary bevel gears are symmetrically arranged by taking the axis of the input unit as a symmetrical axis.

Further, the input unit comprises an input shaft, an input bevel gear shaft and an input bevel gear ring which are sequentially connected, and the input bevel gear ring is meshed with the planetary bevel gear; the output unit comprises an output bevel gear ring and an output bevel gear shaft which are connected integrally, and the output bevel gear ring is meshed with the planetary bevel gear.

Further, the bevel gear transmission structure also comprises an outer shell and a transmission assembly;

The outer shell is arranged on the outer side of the planetary shell, and the transmission assembly is arranged between the outer shell and the planetary shell, is connected with the planetary shell and is used for driving the planetary shell to rotate;

The outer shell is rotationally connected with one end, close to the input shaft, of the planetary shell through a third connecting piece; the third connecting piece comprises a third bearing and a second clamping ring; the inner ring of the third bearing is connected with the outer wall of the planetary shell, and the outer ring of the third bearing is connected with the inner wall of the outer shell; the clamping groove is formed in the inner wall of the outer shell, the second clamping ring is installed in the clamping groove, and the end face of the second clamping ring abuts against the end face of the third bearing so as to axially limit the third bearing.

Further, the outer shell is rotationally connected with one end, far away from the input shaft, of the planetary shell through a fourth connecting piece; the fourth connection comprises a fourth bearing; the inner wall of the outer shell is provided with a first bulge, the outer wall of the planetary shell is provided with a second bulge, the inner ring of the fourth bearing is connected with the outer wall of the planetary shell, the outer ring of the fourth bearing is connected with the inner wall of the outer shell, one end face of the fourth bearing is abutted to the first bulge, and the other end face of the fourth bearing is abutted to the second bulge.

Further, the transmission assembly comprises a worm wheel and a worm, the worm wheel is fixed on the periphery of the planetary shell, and the worm is rotatably connected in the outer shell and meshed with the worm wheel; the motor is arranged on the outer shell and connected with the worm to drive the worm to rotate.

Compared with the prior art, the bevel gear transmission structure has the following advantages:

According to the bevel gear transmission structure, the planetary bevel gear is installed in the planetary shell through the second connecting piece, the second connecting piece comprises the second main body part, the second locking part and the second bearing, when the planetary bevel gear transmission structure is installed, the second bearing is connected between the second main body part and the planetary bevel gear, the planetary bevel gear is connected with the second connecting piece in a rotating mode, the second main body part is installed in an installation hole formed in the planetary shell and can axially move relative to the installation hole, the depth of the second main body part extending into the planetary shell can be adjusted through controlling the distance of relative movement, the installation position of the planetary bevel gear in the planetary shell is adjusted, and finally the second main body part and the planetary shell can be locked and fixed through the second locking part. Through setting up the second connecting piece, simple structure, processing is convenient, has not only realized the installation of planetary bevel gear in the planetary shell, can follow planetary shell side in assembly process and go adjustment planetary bevel gear's mounted position moreover, conveniently eliminates planetary bevel gear and input unit's fit clearance, promotes the convenient degree and the precision of assembly, guarantees product quality.

The application also provides a vehicle comprising the bevel gear transmission structure.

The advantages of the vehicle and the bevel gear transmission structure are the same as those of the prior art, and are not described in detail herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a schematic view of the external structure of a bevel gear transmission according to an embodiment of the present application;

FIG. 2 is a schematic view of the internal structure of a bevel gear transmission according to an embodiment of the present application;

FIG. 3 is a schematic view of a second coupling member in a bevel gear transmission according to an embodiment of the present application;

FIG. 4 is a schematic view of a first coupling member in a bevel gear transmission according to an embodiment of the present application;

FIG. 5 is a schematic diagram showing the internal structure of a bevel gear transmission structure according to an embodiment of the present application;

Fig. 6 is a schematic view of a fixing manner of a sensor in a bevel gear transmission structure according to an embodiment of the present application.

Reference numerals illustrate:

1. A planetary housing; 2. a planetary bevel gear; 31. a first body portion; 32. a first locking part; 33. a first bearing; 41. a second body portion; 42. a second locking part; 43. a second bearing; 44. a first snap ring; 51. an input shaft; 54. a torsion bar; 52. inputting a bevel gear shaft; 53. inputting a cone gear ring; 61. outputting a bevel gear shaft; 62. an output cone gear ring; 7. an outer housing; 81. a third bearing; 82. a second snap ring; 91. a fourth bearing; 92. a fifth bearing; 93. a sixth bearing; 94. a seventh bearing; 10. a worm wheel; 11. a worm; 12. a motor; 13. a sensor; 131. a stator; 132. a rotor; 14. a sensor cover.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

In addition, references to "upper", "lower", "left", "right", etc. in the embodiments of the present application indicate that the apparatus or elements referred to have been described in a particular orientation, constructed and operated based on the orientation or positional relationship shown in the drawings, and are not intended to limit the present application, but are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, construct and operate in a particular orientation. Moreover, relational terms such as "first," "second," "third," "fourth," and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities or order, nor should they be construed as indicating or implying relative importance.

The application will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1-2, a bevel gear transmission structure includes a planetary housing 1, an input unit, an output unit, and a planetary bevel gear 2. The input unit, the output unit and the planetary shell 1 are coaxially arranged, and the planetary bevel gear 2 is connected between the input unit and the output unit and is used for transmitting the torque of the input unit to the output unit; the input unit is rotationally connected with the planetary shell 1 through a first connecting piece; the planetary bevel gear 2 is located in the planetary housing 1 and is rotatably connected with the planetary housing 1 through a second connecting piece.

The second connector includes a second body portion 41, a second locking portion 42, and a second bearing 43; the planetary housing 1 is provided with a mounting hole, and the second main body 41 passes through the mounting hole and can axially move relative to the mounting hole; the second bearing 43 is installed inside the second body part 41 and connected to a gear shaft of the planetary bevel gear 2; the second locking portion 42 is located outside the planetary housing 1, is connected to the second body portion 41, and is configured to limit a depth of the second body portion 41 passing through the mounting hole, and fix the second body portion 41 and the planetary housing 1.

Specifically, a space for installing an input unit, a planetary bevel gear 2 and an output unit is formed inside the planetary housing 1, as shown in fig. 2, the upper end of the planetary housing 1 is a torque input end, the lower end is a torque output end, and the input unit and the output unit are arranged along the axial direction of the planetary housing 1 and can rotate around the axis of the planetary housing 1; the planetary bevel gear 2 is disposed perpendicularly to the axial direction of the planetary housing 1 between the input unit and the output unit for transmitting torque of the input unit to the output unit.

The planetary bevel gear 2 is rotatably connected with the planetary housing 1 by a second coupling member including a second main body portion 41, a second locking portion 42, and a second bearing 43. Specifically, the second body portion 41 is installed in an installation hole formed in the planetary housing 1, so that one end of the second body portion 41 extends into the planetary housing 1, and one end of the second body portion 41 is located outside the planetary housing 1, wherein one end of the second body portion 41 located inside the planetary housing 1 is connected with the second bearing 43, the second bearing 43 is connected with the planetary bevel gear 2, the planetary bevel gear 2 is rotatably connected with the second body portion 41, and one end of the second body portion located outside the planetary housing 1 is connected with the second locking portion 42. During installation, the second main body part 41 is installed in the installation hole and can axially move relative to the installation hole, the depth of the second main body part 41 extending into the planetary shell 1 can be adjusted by controlling the distance of the relative movement, and then the installation position of the planetary bevel gear 2 in the planetary shell 1 is adjusted, so that the fit clearance between the planetary bevel gear 2 and an input unit is eliminated, the assembly convenience is improved, the installation depth of the second main body part 41 can be limited by using the second locking part 42 after adjustment, and the locking fixation of the second main body part 41 and the planetary shell 1 is ensured.

Further, the mounting hole is a threaded hole, and the second body portion 41 is threaded with the planetary housing 1 through the mounting hole; the second locking portion 42 is sleeved on the outer periphery of the second main body portion 41 and is in threaded connection with the second main body portion 41, and an end face of the second locking portion 42 abuts against the outer wall of the planetary housing 1.

Specifically, referring to fig. 2 and 3, the second body portion 41 has a cylindrical structure in which a space for installing the second bearing 43 is formed, an outer ring of the second bearing 43 is fixed to an inner wall of the second body portion 41, an inner ring of the second bearing 43 is fixed to a gear shaft of the planetary bevel gear 2, and in actual operation, the planetary bevel gear 2 is axially fixed to the second bearing 43 by the first snap ring 44, and the planetary bevel gear 2 is rotatable relative to the second body portion 41; the outer wall processing external screw thread of second main part 41 sets up the mounting hole of planet casing 1 side and is the screw hole, and second main part 41 and mounting hole threaded connection can adjust the inside degree of depth of second main part 41 stretching into planet casing 1 through screw-thread fit when the assembly to adjust the mounted position of planet bevel gear 2 in the inside of planet casing 1. After the second locking part 42 is sleeved on the outer periphery of the second main body part 41 after the second main body part 41 is adjusted to a proper position, and the second locking part 42 is provided with internal threads and is in threaded connection with the second main body part 41, so that the second main body part 41 and the planetary housing 1 can be locked from the outer side of the planetary housing 1, the end face of the second locking part 42 is abutted against the outer wall of the planetary housing 1, the installation depth of the second main body part 41 is limited, and the connection stability is ensured.

In this embodiment, through setting up the second connecting piece for planetary bevel gear 2 can adjust its installation depth along the direction of perpendicular to planetary housing 1 axis when the assembly, thereby conveniently eliminate planetary bevel gear 2 and input unit's fit clearance, ensure the accuracy of assembly position, improve the assembly convenience.

Further, the first connector includes a first main body portion 31, a first locking portion 32, and a first bearing 33.

The first body 31 is disposed at one end of the planetary housing 1, is located inside the planetary housing 1, and is axially movable relative to the planetary housing 1; the first bearing 33 is installed inside the first body part 31 and connected to the input unit; the first locking portion 32 is located outside the planetary housing 1, is connected to the first body portion 31, and is configured to limit a depth of the first body portion 31 extending into the planetary housing 1, and fix the first body portion 31 and the planetary housing 1.

The first body portion 31 is in threaded connection with the planetary housing 1, the first locking portion 32 is sleeved on the outer periphery of the first body portion 31 and is in threaded connection with the first body portion 31, and an end face of the first locking portion 32 abuts against an end face of the planetary housing 1.

Specifically, referring to fig. 2 and 4, the input unit is rotatably connected with the planetary housing 1 by a first connecting member including a first main body portion 31, a first locking portion 32, and a first bearing 33. The first main body 31 has a cylindrical structure, a space for mounting the first bearing 33 is formed inside, an outer ring of the first bearing 33 is fixed to an inner wall of the first main body 31, an inner ring of the first bearing 33 is fixed to the input unit, and further the first main body 31 is rotatably connected to the input unit. The inner wall of one end of the planetary shell 1, which is close to the input unit, is provided with an internal thread, the outer wall of the first main body part 31 is provided with an external thread, the first main body part 31 is in threaded connection with the planetary shell 1, and when the planetary shell 1 is assembled, the depth of the first main body part 31 extending into the planetary shell 1 from the axial direction can be adjusted through threaded fit, so that the axial installation position of the input unit in the planetary shell 1 is adjusted. After the planetary housing 1 is adjusted to a proper position, the first locking part 32 is sleeved on the outer periphery of the first main body part 31, and the first locking part 32 is provided with internal threads in a threaded manner and is in threaded connection with the first main body part 31, so that the first main body part 31 and the planetary housing 1 can be locked from the upper end of the planetary housing 1, the end face of the first locking part 32 is abutted against the upper end face of the planetary housing 1, the installation depth of the first main body part 31 is limited, and the stable connection is ensured.

In this embodiment, through setting up first connecting piece for when the assembly, input unit can follow the axial adjustment mounting height of planetary housing 1, conveniently adjusts input unit and planetary bevel gear 2's fit clearance, ensures the accuracy of assembly, promotes the simple operation degree.

Further, the input unit comprises an input shaft 51, an input bevel gear shaft 52 and an input bevel gear ring 53 which are sequentially connected, and the input bevel gear ring 53 is meshed with the planetary bevel gear 2; the output unit comprises an output bevel gear 62 and an output bevel gear shaft 61 which are connected integrally, and the output bevel gear 62 is meshed with the planetary bevel gear 2.

Specifically, in the transmission structure of the input shaft 51 for transmitting the torque input from the steering wheel of the vehicle to the inside of the planetary housing 1, referring to fig. 2, a torsion bar 54 is disposed in the input shaft 51, the upper end of the torsion bar 54 is fixed to the input shaft 51 by drilling and pinning, and the lower end is fixed to the input bevel gear shaft 52, when the input shaft 51 is driven to rotate, the torsion bar 54 can be driven to rotate simultaneously, and the torsion bar 54 is made of a material capable of elastically deforming, so that the torsion bar 54 can elastically rotate and deform when the input shaft 51 rotates, and the lower end of the torsion bar 54 is fixedly connected with the input bevel gear shaft 52, so that the input bevel gear shaft 52 can be driven to rotate simultaneously when the torsion bar 54 rotates.

The input bevel gear ring 53 is fixed on the input bevel gear shaft 52 and meshed with the planetary bevel gear 2, and when the input bevel gear shaft 52 rotates, the input bevel gear ring 53 is driven to synchronously rotate, so that the planetary bevel gear 2 is driven to simultaneously rotate; the output bevel gear ring 62 is fixed on the output bevel gear shaft 61 and meshed with the planetary bevel gear 2, and when the planetary bevel gear 2 rotates, the output bevel gear ring 62 is driven to rotate, and then the output bevel gear shaft 61 is driven to rotate, and finally torque is output.

The input shaft 51, the input cone gear shaft 52, the input cone gear ring 53, the output cone gear ring 62, and the output cone gear shaft 61 are all provided coaxially with the planetary housing 1. The input cone gear shaft 52 and the output cone gear shaft 61 can be connected through a sliding bearing, so as to achieve the effect of coaxial arrangement.

Further, the planetary bevel gears 2 are provided in two, and the two planetary bevel gears 2 are installed inside the planetary housing 1 and are symmetrically disposed with respect to the axis of the input unit as a symmetry axis.

Further, the bevel gear transmission structure further comprises an outer shell 7 and a transmission assembly.

The outer shell 7 is arranged on the outer side of the planetary shell 1, and the transmission assembly is arranged between the outer shell 7 and the planetary shell 1 and connected with the planetary shell 1 and used for driving the planetary shell 1 to rotate.

The outer shell 7 is rotatably connected with one end of the planetary shell 1, which is close to the input shaft 51, through a third connecting piece; the third connecting piece comprises a third bearing 81 and a second clamping ring 82; the inner ring of the third bearing 81 is connected with the outer wall of the planetary housing 1, and the outer ring of the third bearing 81 is connected with the inner wall of the outer housing 7; a clamping groove is formed in the inner wall of the outer shell 7, the second clamping ring 82 is installed in the clamping groove, and the end face of the second clamping ring 82 abuts against the end face of the third bearing 81 so as to axially limit the third bearing 81.

Specifically, the transmission assembly is arranged in a cavity between the outer shell 7 and the planetary shell 1 and is used for driving the planetary shell 1 to rotate around the axis of the planetary shell, and the planetary shell 1 rotates to drive the planetary bevel gear 2 to rotate together, so that the planetary bevel gear 2 completes revolution and forms accumulated rotation speed with autorotation, so that the input end and the output end form a rotation speed difference, and the effect of changing the transmission ratio is achieved.

The planetary housing 1 is rotatably connected with the outer housing 7, specifically, the upper end of the planetary housing 1 is connected with the outer housing 7 through a third connection. Referring to fig. 2, the third connecting piece includes a third bearing 81 and a second snap ring 82, the inner ring of the third bearing 81 is fixed with the outer wall of the planetary housing 1, the outer ring of the third bearing 81 is fixed with the inner wall of the outer housing 7, in order to further ensure that the third bearing 81 is stably mounted in the axial direction, the second snap ring 82 is arranged at the upper end of the third bearing 81, a clamping groove is correspondingly formed in the inner wall of the outer housing 7, the second snap ring 82 has elasticity, the second snap ring 82 is tightened and placed at the upper end of the third bearing 81 by means of a tool during mounting, after aligning with the clamping groove, the tool is released to enable the second snap ring 82 to release the elasticity and clamp into the clamping groove, the lower end surface of the second snap ring 82 abuts against the upper end surface of the third bearing 81, and the axial direction of the third bearing 81 is limited, so that the mounting stability is ensured. Through setting up the rotation that the planet casing 1 has been realized with outer casing 7 to the third connecting piece and be connected, adopt end cover screw-thread fit among the prior art to set up the mode that the bearing realized rotating the connection in the end cover, the structure is simpler, and machining precision can be guaranteed, and the assembly is more accurate and convenient.

Further, the outer casing 7 is rotatably connected to an end of the planetary casing 1 away from the input shaft 51 through a fourth connecting member; the fourth connection comprises a fourth bearing 91; the inner wall of the outer shell 7 is provided with a first bulge, the outer wall of the planetary shell 1 is provided with a second bulge, the inner ring of the fourth bearing 91 is connected with the outer wall of the planetary shell 1, the outer ring of the fourth bearing 91 is connected with the inner wall of the outer shell 7, and one end face of the fourth bearing 91 is abutted to the first bulge, and the other end face of the fourth bearing 91 is abutted to the second bulge.

Specifically, the lower end of the planetary housing 1 is connected to the outer housing 7 by a fourth connecting member including a fourth bearing 91. The inner ring of the fourth bearing 91 is fixed with the outer wall of the planetary housing 1, the outer ring of the fourth bearing 91 is fixed with the inner wall of the outer housing 7, and the first protrusion and the second protrusion are arranged to enable the second protrusion and the first protrusion to respectively abut against the upper end face and the lower end face of the fourth bearing 91, so that the axial direction of the fourth bearing 91 is limited, and the stability of connection is ensured.

Further, the lower end of the output bevel gear shaft 61 is rotationally connected with the planetary housing 1 through the fifth bearing 92, and the axial limitation of the fifth bearing 92 can also be realized by adopting a similar limitation structure as the first protrusion and the second protrusion.

Further, the transmission assembly comprises a worm wheel 10 and a worm 11, the worm wheel 10 is fixed on the periphery of the planetary housing 1, and the worm 11 is rotatably connected in the outer housing 7 and meshed with the worm wheel 10; the motor 12 is arranged on the outer shell 7, and the motor 12 is connected with the worm 11 and is used for driving the worm 11 to rotate.

Specifically, referring to fig. 5, the worm wheel 10 is fixed on the outer periphery of the planetary housing 1, one end of the worm 11 is rotatably mounted in the outer housing 7 through a sixth bearing 93, the other end is rotatably mounted in the outer housing 7 through a seventh bearing 94, a coupling and an elastomer, the worm 11 is meshed with the worm wheel 10, when the motor 12 drives the worm 11 to rotate, the worm 11 rotates to drive the worm wheel 10 to rotate, the worm wheel 10 rotates to drive the planetary housing 1 to synchronously rotate, revolution of the planetary bevel gear 2 is realized, accumulated rotational speeds are formed by rotation of the planetary bevel gear 2, a rotational speed difference is formed at the input end and the output end, and the effect of changing the transmission ratio is achieved.

Further, the bevel gear transmission structure further comprises a sensor 13 and a controller, wherein the sensor 13 is connected with the input shaft 51 and the input bevel gear shaft 52, and the sensor 13 is used for detecting the angle difference between the input shaft 51 and the input bevel gear shaft 52 and outputting a signal to the controller. The controller is integrated with the motor 12, and is configured to receive the signal and control the motor 12 to output a corresponding rotational speed and torque according to the signal.

Specifically, referring to fig. 6, the sensor 13 is provided in a sensor cover 14, and the sensor cover 14 is fixed to the outer case 7; the sensor 13 includes a magnetic ring, a stator 131, and a rotor 132, wherein the stator 131 is fixed with the sensor cover 14, the magnetic ring is fixed with the input shaft 51, the rotor 132 is rotatably connected with the stator 131, and the rotor 132 is fixed with the input bevel gear shaft 52. When the input shaft 51 is forced to rotate, the torsion bar 54 deforms, the input shaft 51 and the input bevel gear shaft 52 generate an angle difference, the sensor 13 detects the angle difference, a signal is output to the controller through the wire harness, the controller controls the motor 12 to output corresponding torque and rotating speed, the worm 11 and the worm wheel 10 are driven to work, the planetary shell 1 is driven to rotate around the axis of the worm, the planetary bevel gear 2 rotates and simultaneously completes revolution, accumulated rotating speed is formed, the effect of changing the transmission ratio is finally achieved, the controllability of the number of turns of the steering wheel is maintained, and the maneuverability of the vehicle is optimized.

The assembly process of the bevel gear transmission structure provided by the embodiment of the application is as follows:

(1) The second bearing 43 is pressed into the second main body 41, the second locking part 42 is sleeved, and the planetary bevel gear 2 is axially fixed on the second bearing 43 through the first clamping ring 44 to form a first sub-assembly; the output bevel gear ring 62 is pressed on the output bevel gear shaft 61 to form a second sub-assembly; the first bearing 33 is pressed on the first main body part 31 and sleeved with the first locking part 32 to form a third sub-assembly; the sliding bearing and the input bevel gear ring 53 are respectively pressed on the input bevel gear shaft 52, the torsion bar 54 is pressed on the input bevel gear shaft 52, and magnetic ring welding, drilling and pin punching are completed with the input shaft 51, so that a fourth sub-assembly is formed; the fifth bearing 92, the third bearing 81 and the worm gear 10 are respectively pressed on the planetary shell 1 to form a planetary shell sub-assembly;

(2) Assembling the first sub-assembly, the second sub-assembly, the third sub-assembly and the fourth sub-assembly into the planetary shell sub-assembly, eliminating the fit clearance between the planetary bevel gear 2 and the input bevel gear 53 by screwing in the second main body part 41 and the first main body part 31 and adjusting the screwing-in depth, and respectively locking the second locking part 42 and the first locking part 32 when the screwing-in torque of the first main body part 31 and the second main body part 41 reaches a required value to complete the planetary sub-assembly;

(3) The fourth bearing 91 is pressed in a cavity in the outer shell 7, the seventh bearing 94, the coupler and the elastic body are sequentially pressed at one end of the worm 11, the sixth bearing 93 is pressed at the other end of the worm 11, the fourth bearing is assembled in the cavity in the outer shell 7 after the press fitting is completed, and the seventh bearing, the coupler and the elastic body are locked through fasteners to form a shell sub-assembly; assembling the planetary sub-assembly into the housing sub-assembly, axially secured by a second snap ring 82;

(4) The stator 131 of the sensor 13 is fixed on the sensor cover 14, the sensor cover 14 is mounted on the outer housing 7 through bolts, and finally the motor 12 is assembled on the outer housing 7, so that the assembly of the speed ratio module is completed.

In the embodiment of the application, the second connecting piece is arranged, so that the position of the planetary bevel gear 2 can be adjusted along the direction perpendicular to the axis of the planetary shell 1 in the assembly process, the first connecting piece is matched on the basis, the input bevel gear 53 can be adjusted along the axial direction of the planetary shell 1, the mounting positions of the transmission parts in the planetary shell 1 can be adjusted in two directions, the fit clearance between the gear and the gear is conveniently eliminated in the assembly process, the assembly operation difficulty is reduced, the assembly accuracy is ensured, the whole structure is simple, and the processing is convenient.

The embodiment of the application also provides a vehicle which comprises the bevel gear transmission structure.

The advantages of the vehicle and the bevel gear transmission structure are the same as those of the prior art, and are not described in detail herein.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.

Claims (10)

1. A bevel gear transmission structure comprising:

the planetary gear comprises a planetary shell, an input unit, an output unit and a planetary bevel gear;

The input unit, the output unit and the planetary shell are coaxially arranged, and the planetary bevel gear is connected between the input unit and the output unit and used for transmitting the torque of the input unit to the output unit; the input unit is rotationally connected with the planetary shell through a first connecting piece; the planetary bevel gear is positioned in the planetary shell and is rotationally connected with the planetary shell through a second connecting piece;

the second connecting piece comprises a second main body part, a second locking part and a second bearing;

The planet shell is provided with a mounting hole, and the second main body part penetrates through the mounting hole and can axially move relative to the mounting hole; the second bearing is arranged in the second main body part and is connected with a gear shaft of the planetary bevel gear; the second locking part is positioned at the outer side of the planetary shell, connected with the second main body part and used for limiting the depth of the second main body part penetrating through the mounting hole and fixing the second main body part and the planetary shell.

2. The bevel gear transmission according to claim 1, wherein: the second main body part penetrates through the mounting hole and is in threaded connection with the planetary shell; the second locking part is sleeved on the periphery of the second main body part and is in threaded connection with the second main body part, and the end face of the second locking part is abutted against the outer wall of the planetary shell.

3. The bevel gear transmission according to claim 1, wherein:

the first connecting piece comprises a first main body part, a first locking part and a first bearing;

The first main body part is arranged at one end of the planetary shell and is positioned at the inner side of the planetary shell and can axially move relative to the planetary shell; the first bearing is arranged in the first main body part and is connected with the input unit; the first locking part is positioned at the outer side of the planetary shell, connected with the first main body part and used for limiting the depth of the first main body part extending into the planetary shell and fixing the first main body part and the planetary shell.

4. A bevel gear transmission according to claim 3, wherein: the first main body part is in threaded connection with the planetary shell, the first locking part is sleeved on the periphery of the first main body part and in threaded connection with the first main body part, and the end face of the first locking part is abutted to the end face of the planetary shell.

5. The bevel gear transmission according to claim 1, wherein: the planetary bevel gears are arranged in two, and the two planetary bevel gears are symmetrically arranged by taking the axis of the input unit as a symmetrical axis.

6. The bevel gear transmission according to claim 1, wherein: the input unit comprises an input shaft, an input bevel gear shaft and an input bevel gear ring which are sequentially connected, and the input bevel gear ring is meshed with the planetary bevel gear; the output unit comprises an output bevel gear ring and an output bevel gear shaft which are connected integrally, and the output bevel gear ring is meshed with the planetary bevel gear.

7. The bevel gear transmission according to claim 6, wherein:

the bevel gear transmission structure also comprises an outer shell and a transmission assembly;

The outer shell is arranged on the outer side of the planetary shell, and the transmission assembly is arranged between the outer shell and the planetary shell, is connected with the planetary shell and is used for driving the planetary shell to rotate;

The outer shell is rotationally connected with one end, close to the input shaft, of the planetary shell through a third connecting piece;

The third connecting piece comprises a third bearing and a second clamping ring; the inner ring of the third bearing is connected with the outer wall of the planetary shell, and the outer ring of the third bearing is connected with the inner wall of the outer shell; the clamping groove is formed in the inner wall of the outer shell, the second clamping ring is installed in the clamping groove, and the end face of the second clamping ring abuts against the end face of the third bearing so as to axially limit the third bearing.

8. The bevel gear transmission according to claim 7, wherein: the outer shell is rotationally connected with one end, far away from the input shaft, of the planetary shell through a fourth connecting piece;

The fourth connection comprises a fourth bearing; the inner wall of the outer shell is provided with a first bulge, the outer wall of the planetary shell is provided with a second bulge, the inner ring of the fourth bearing is connected with the outer wall of the planetary shell, the outer ring of the fourth bearing is connected with the inner wall of the outer shell, one end face of the fourth bearing is abutted to the first bulge, and the other end face of the fourth bearing is abutted to the second bulge.

9. The bevel gear transmission according to claim 8, wherein:

The transmission assembly comprises a worm wheel and a worm, the worm wheel is fixed on the periphery of the planetary shell, and the worm is rotationally connected in the outer shell and meshed with the worm wheel;

The motor is arranged on the outer shell and connected with the worm to drive the worm to rotate.

10. A vehicle comprising a bevel gear arrangement according to any one of claims 1 to 9.