CN117565972A - Vertical steering transmission device and independent suspension system - Google Patents
Vertical steering transmission device and independent suspension system Download PDFInfo
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- CN117565972A CN117565972A CN202311770045.2A CN202311770045A CN117565972A CN 117565972 A CN117565972 A CN 117565972A CN 202311770045 A CN202311770045 A CN 202311770045A CN 117565972 A CN117565972 A CN 117565972A
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- steering
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- arm
- rocker
- maintenance module
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/16—Arrangement of linkage connections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/20—Links, e.g. track rods
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The application relates to a vertical steering transmission device which is arranged on a subframe and drives left wheels and right wheels to steer. The vertical steering transmission device comprises a vertical steering gear, a steering vertical arm, a steering longitudinal pull rod, a left rocker arm unit and a right rocker arm unit, wherein the output end of the vertical steering gear extends along a first direction and is connected with the steering vertical arm; the steering vertical arm extends along the second direction and is connected with the steering longitudinal pull rod; the steering longitudinal pull rod extends along a third direction and is connected with the left rocker arm unit, and the third direction, the second direction and the first direction are perpendicular to each other; the left rocker arm unit is rotatably arranged on the auxiliary frame and is connected with left wheels; the right rocker arm unit is rotatably arranged on the auxiliary frame and is connected with the right wheel. The steering vertical arm extends along the second direction, namely the Z-axis direction, and the steering vertical arm rotates around the output end of the vertical steering gear to drive the steering longitudinal pull rod to move along the third direction, namely the Y-axis direction, so that the space in the Z-axis direction and the Y-axis direction is utilized, and the problem that the space utilization caused by the horizontal steering transmission device is unreasonable is solved.
Description
Technical Field
The application relates to the technical field of vehicle steering transmission, in particular to a vertical steering transmission device and an independent suspension system.
Background
The steering transmission device is one of important components of the independent suspension system, and the function of the steering transmission device is to control the running direction of the vehicle according to the wishes of a driver, so that the steering transmission device is critical to the running safety of the vehicle.
The steering transmission device in the existing independent suspension system is usually in a horizontal arrangement mode, the horizontal arrangement steering transmission device occupies large transverse space of the vehicle, the installation space of components such as a radiator and a car lamp is affected, the radiating function of the radiator and the car lamp is affected, and particularly for a new energy vehicle which is being developed, the horizontal arrangement steering transmission device can realize connection of a steering gear and a steering column only by adding an angle transmission box, and hydraulic pipeline arrangement is not facilitated.
Disclosure of Invention
Based on the above, it is necessary to provide a vertical steering transmission device and an independent suspension system for solving the problem that the space arrangement of a vehicle is not reasonable due to the horizontal arrangement of the steering transmission device at present.
A vertical steering transmission mounted to a subframe for driving left and right wheels to steer, the vertical steering transmission comprising:
the output end of the vertical steering gear extends along a first direction;
the vertical steering device comprises a vertical steering device, a steering drop arm, a steering control device and a control device, wherein the vertical steering device comprises a vertical steering device, a steering drop arm and a steering control device, the vertical steering device comprises a vertical steering device, a steering control device and a steering control device, wherein the vertical steering device comprises a vertical steering device, a steering drop arm extends along a second direction, and a first end of the vertical steering device in the second direction is connected with an output end of the vertical steering device;
the steering longitudinal pull rod extends along a third direction, one end of the steering longitudinal pull rod is connected with a second end, which is far away from the vertical steering device, of the steering vertical arm in the third direction, and the third direction, the second direction and the first direction are perpendicular to each other;
the left rocker arm unit is rotatably arranged on the auxiliary frame and is used for connecting the left wheel with one end, away from the steering vertical arm, of the steering vertical rod;
and the right rocker arm unit is rotatably arranged on the auxiliary frame and is connected with the left rocker arm unit and the right wheel.
According to the vertical steering transmission device, the vertical steering device drives the steering vertical arm to swing to drive the steering vertical pull rod connected with the steering vertical arm to move along the third direction, the steering vertical pull rod enables the left rocker arm unit connected with the vertical steering vertical transmission device to rotate, the left rocker arm unit drives left wheels to rotate, and meanwhile the right rocker arm unit connected with the left rocker arm unit drives right wheels to rotate, so that the change of the running direction of a vehicle is realized. And the steering vertical arm extends along the second direction, namely the Z-axis direction, and the steering vertical arm rotates around the output end of the vertical steering gear to drive the steering longitudinal pull rod to move along the third direction, namely the Y-axis direction, so that the space in the Z-axis direction and the Y-axis direction is fully utilized, the problem that the traditional horizontally arranged steering transmission device occupies large transverse space of the vehicle is solved, the problem that the heat dissipation is poor due to insufficient installation space of components such as a radiator and a car lamp is avoided, the new energy vehicle also has enough space to directly install the steering gear and the steering column, an angle driving box is not required to be added, and meanwhile, the hydraulic pipeline arrangement is facilitated.
In one embodiment, the drop arm includes a first arcuate segment protruding in the first direction, with two ends of the first arcuate segment respectively connecting the first and second ends of the drop arm such that the first and second ends are not in the same plane.
In one embodiment, the left rocker unit comprises a first rocker, a first maintenance module and a first steering side pull rod, wherein:
the first rocker arm is connected with one end of the steering vertical arm, which is away from the steering vertical arm, of the steering vertical rod;
the first maintenance module is rotatably arranged on the auxiliary frame around the axis of the first maintenance module and is connected with the first rocker arm;
one end of the first steering side pull rod is connected with the first rocker arm, and the other end of the first steering side pull rod is connected with the left wheel.
In one embodiment, the first rocker arm comprises a first connecting arm, a second connecting arm, and a connecting ring, wherein:
one end of the first connecting arm is connected with the steering longitudinal pull rod, and the other end of the first connecting arm is connected with the second connecting arm in an angle;
one end of the second connecting arm, which is away from the first connecting arm, is connected with the first steering side pull rod;
the connecting ring is arranged at the joint of the first connecting arm and the second connecting arm, and the connecting ring is sleeved on the outer side of the first maintenance module.
In one embodiment, one end of the first connecting arm connected with the tie rod is a third end, one end of the first connecting arm connected with the second connecting arm is a fourth end, the first connecting arm further comprises a second arc-shaped section protruding along the second direction, and two ends of the second arc-shaped section are respectively connected with the third end and the fourth end of the first connecting arm, so that the third end and the fourth end are not in the same plane.
In one embodiment, the right rocker unit includes a second rocker, a second maintenance module and a second steering side pull rod, the second rocker is connected with the left rocker unit, the second maintenance module is connected with the second rocker, and the second maintenance module is rotatably mounted on the subframe around the axis of the second maintenance module, one end of the second steering side pull rod is connected with the second rocker, and the other end of the second steering side pull rod is connected with the right wheel.
In one embodiment, the vertical steering transmission device further comprises a steering intermediate pull rod, and two ends of the steering intermediate pull rod are respectively connected with the left rocker arm unit and the second rocker arm.
In one embodiment, the first maintenance module includes a rotating bearing, a pin shaft and a fastener, the rotating bearing can be axially and rotatably sleeved on the outer side of the pin shaft around the pin shaft, the rotating bearing is connected with the first rocker arm, the bottom end of the pin shaft is detachably connected with the auxiliary frame, the top end of the pin shaft is penetrated with the fastener and detachably connected with the fastener, and the fastener is abutted to the top end of the rotating bearing.
In one embodiment, the first maintenance module includes a sealing ring and an oil seal, the sealing ring is sleeved on the pin shaft and is located at one side of the rotating bearing away from the fastening piece, and the oil seal is sleeved on the pin shaft and is located between the rotating bearing and the fastening piece.
The application also provides an independent suspension system, which comprises the vertical steering transmission device of any embodiment.
According to the independent suspension system, the independent suspension system comprises the vertical steering transmission device, the vertical steering device in the vertical steering transmission device drives the steering vertical arm to swing so as to drive the steering vertical pull rod connected with the steering vertical arm to move along the third direction, the steering vertical pull rod enables the left rocker arm unit connected with the steering vertical arm to rotate, the left rocker arm unit drives the left wheel to rotate, and meanwhile the right rocker arm unit connected with the left rocker arm unit drives the right wheel to rotate, so that the running direction of the vehicle is changed. And the steering vertical arm extends along the second direction, namely the Z-axis direction, and the steering vertical arm rotates around the output end of the vertical steering gear to drive the steering vertical pull rod to move along the third direction c, namely the Y-axis direction, so that the space in the Z-axis direction and the Y-axis direction is fully utilized, the problem that the traditional horizontally arranged steering transmission device occupies large transverse space of the vehicle is solved, the problem that the heat dissipation is poor due to insufficient installation space of components such as a radiator and a car lamp is avoided, the new energy vehicle also has enough space to directly install the steering gear and the steering column, an angle driving box is not required to be added, and meanwhile, the hydraulic pipeline arrangement is facilitated.
Drawings
Fig. 1 is a schematic structural view of a vertical steering transmission device provided by the application.
Fig. 2 is a top view of the vertical steering gear provided herein.
Fig. 3 is a schematic view of a part of the structure in fig. 1.
Fig. 4 is a schematic structural view of the left rocker unit provided in the present application mounted on a subframe.
Fig. 5 is a schematic diagram of a connection structure between a first rocker arm and a first maintenance module provided in the present application.
Fig. 6 is a schematic diagram of the explosive structure of fig. 5.
Fig. 7 is a schematic structural diagram of a first maintenance module provided in the present application.
Wherein:
10. a vertical steering transmission; 20. an auxiliary frame; 30. a left wheel; 40. a right wheel; 50. a longitudinal beam; a. a first direction; b. a second direction; c. a third direction;
100. a vertical steering gear; 200. a steering drop arm; 210. a first end; 220. a second end; 230. a first arcuate segment; 300. a steering column;
400. a left rocker arm unit; 410. a first rocker arm; 411. a first connecting arm; 4111. a third end; 4112. a fourth end; 4113. a second arcuate segment; 412. a second connecting arm; 413. a connecting ring; 420. a first maintenance module; 421. a rotating bearing; 422. a pin shaft; 423. a fastener; 424. a seal ring; 425. an oil seal; 430. a first tie rod;
500. a right rocker arm unit; 510. a second rocker arm; 520. a second maintenance module; 530. a second tie rod; 600. and a steering intermediate pull rod.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural view of a vertical steering gear 10 according to an embodiment of the present application, fig. 2 is a schematic structural view of the vertical steering gear 10 according to an embodiment of the present application, and fig. 3 is a schematic structural view of a portion of fig. 1. The vertical steering transmission device 10 provided in an embodiment of the present application is mounted on the subframe 20, and is used for driving the left wheel 30 and the right wheel 40 to steer, and the vertical steering transmission device 10 includes a vertical steering gear 100, a steering vertical arm 200, a steering vertical rod 300, a left rocker unit 400 and a right rocker unit 500.
When the vertical steering gear 100 is specifically arranged, the vertical steering gear 100 is preferably a pure electric steering gear, but is not limited to a pure electric steering gear, a pure hydraulic steering gear and other steering gears, the input end of the vertical steering gear 100 is arranged along a second direction b, namely a Z-axis direction, the second direction b is perpendicular to the first direction a, the vertical steering gear 100 is rigidly connected with a longitudinal beam 50 in a vehicle, and the longitudinal beam 50 is used for fixing the vertical steering gear 100. The drop arm 200 extends in a second direction b, and a first end 210 of the drop arm 200 in the second direction b is connected to the output end of the vertical steering gear 100, and when specifically provided, the drop arm 200 is splined to the vertical steering gear 100. The track rod 300 extends along a third direction c, i.e., the Y-axis direction, one end of the track rod 300 in the third direction c is connected to the second end 220 of the drop arm 200 facing away from the vertical steering gear 100, the third direction c, the second direction b and the first direction a are perpendicular to each other, and when specifically arranged, the track rod 300 is in ball joint connection with the drop arm 200. The left rocker unit 400 is rotatably mounted to the subframe 20, and the left rocker unit 400 connects the left wheel 30 to an end of the track rod 300 facing away from the drop arm 200, and when specifically provided, the left rocker unit 400 is ball-hinged to the track rod 300. The right rocker unit 500 is rotatably mounted to the subframe 20, and the right rocker unit 500 is connected to the left rocker unit 400 and the right wheel 40.
In the vertical steering transmission device 10, the vertical steering device 100 drives the steering vertical arm 200 to swing so as to drive the steering vertical rod 300 connected with the steering vertical arm 200 to move along the third direction c, the steering vertical rod 300 enables the left rocker arm unit 400 connected with the vertical steering vertical rod 300 to rotate, the left rocker arm unit 400 drives the left wheel 30 to rotate, and the right rocker arm unit 500 connected with the left rocker arm unit 400 simultaneously drives the right wheel 40 to rotate, so that the running direction of the vehicle is changed. And the steering vertical arm 200 extends along the second direction b, namely the Z-axis direction, the steering vertical arm 200 rotates around the output end of the vertical steering gear 100 to drive the steering vertical rod 300 to move along the third direction c, namely the Y-axis direction, the space in the Z-axis direction and the Y-axis direction is fully utilized, the problem that the traditional horizontally arranged steering transmission device occupies large transverse space of the vehicle is solved, the problem that the heat dissipation is poor due to insufficient installation space of components such as a radiator and a car lamp is avoided, the new energy vehicle also has enough space to directly install the steering gear and the steering column, an angle transmission box is not required to be added, and meanwhile, the hydraulic pipeline arrangement is facilitated.
The end of the track rod 300 facing away from the drop arm 200 is connected to the left rocker unit 400, and the left rocker unit 400 is mounted to the subframe 20, i.e., the orientation of the track rod 300 is limited by the position of the left rocker unit 400. In order to make the axis of the tie rod 300 parallel to the third direction c, the movement of the tie rod 300 along the third direction c is smooth, and the movement of the ball joints at both ends of the tie rod 300 is flexible. In a preferred embodiment, the drop arm 200 includes a first arcuate segment 230 that projects in a first direction a, with two ends of the first arcuate segment 230 connecting the first end 210 and the second end 220, respectively, in the drop arm 200 such that the first end 210 and the second end 220 are not coplanar, i.e., the first end 210 and the second end 220 are spaced apart in the first direction a. With the above arrangement, the first arcuate segment 230 of the drop arm 200 may be such that the first end 210 and the second end 220 of the drop arm 200 are not coplanar, and the second end 220 of the drop arm 200 is adapted to the orientation of the track rod 300, with the first end 210 of the drop arm 200 being coupled to the upright steering gear 100 for transmission of drive force.
It should be emphasized that the transverse space in the current horizontal steering transmission device is limited, the design of the steering longitudinal pull rod is too short, and the steering longitudinal pull rod 300 in the vertical steering transmission device 10 is easy to loosen when rotating to the limit position, and the arrangement of the steering longitudinal pull rod 300 can be prolonged by arranging the steering longitudinal pull rod 300 along the third direction c, and meanwhile, the design of short front suspension is facilitated, so that the vertical steering transmission device 10 is suitable for a raised-head vehicle and a flat-head vehicle.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a left rocker unit 400 mounted on a subframe 20 according to an embodiment of the present application, and in some embodiments, for convenience of connection of the left rocker unit 400 to a left wheel 30, the left rocker unit 400 includes a first rocker 410, a first maintenance module 420, and a first steering side link 430. The first rocker arm 410 is connected to an end of the track rod 300 facing away from the drop arm 200, and when specifically provided, the first rocker arm 410 is ball-and-socket connected to the track rod 300. The first maintenance module 420 is rotatably mounted to the subframe 20 about its own axis, and the first maintenance module 420 is connected to the first swing arm 410. One end of the first steering side pull rod 430 is connected with the first rocker 410, the other end of the first steering side pull rod 430 is connected with the left wheel 30, and when the steering side pull rod 430 is specifically arranged, the first rocker 410 and the left wheel 30 are connected through spherical hinges. With the above arrangement, when the track rod 300 moves in the third direction c to drive the first rocker arm 410 to rotate through the first maintenance module 420, the rotation of the first rocker arm 410 drives the first steering side rod 430 to rotate, and the left wheel 30 connected to the first steering side rod 430 rotates. When the first swing arm 410 rotates through the first maintenance module 420, the first maintenance module 420 rotates around its own axis, the first maintenance module 420 moves relative to the subframe 20, and the subframe 20 maintains a stationary state.
Referring to fig. 5 and 6, fig. 5 is a schematic diagram showing a connection structure between the first swing arm 410 and the first maintenance module 420 in an embodiment of the present application, and fig. 6 is a schematic diagram showing an explosion structure of fig. 5, in some embodiments, for convenience of connecting the first swing arm 410 to the track rod 300 and the first maintenance module 420, specifically, the first swing arm 410 includes a first connection arm 411, a second connection arm 412 and a connection ring 413. One end of the first connecting arm 411 is connected to the tie rod 300, and the other end of the first connecting arm 411 is connected to the second connecting arm 412 at an angle. The end of the second connecting arm 412 facing away from the first connecting arm 411 is connected to a first steering side lever 430. The connection ring 413 is mounted at the connection position of the first connection arm 411 and the second connection arm 412, and the connection ring 413 is sleeved outside the first maintenance module 420. In a specific arrangement, the first connecting arm 411 is in ball joint with the steering column 300, the second connecting arm 412 is in ball joint with the first steering column 430, and the connecting ring 413 is in interference fit with the first maintenance module 420.
In order to make the movement of the tie rod 300 in the third direction c smoother, more specifically, the end of the first connecting arm 411 connected to the tie rod 300 is a third end 4111, the end of the first connecting arm 411 connected to the second connecting arm 412 is a fourth end 4112, the first connecting arm 411 further includes a second arc segment 4113 protruding in the second direction b, and two ends of the second arc segment 4113 are respectively connected to the third end 4111 and the fourth end 4112 in the first connecting arm 411, such that the third end 4111 and the fourth end 4112 are not in the same plane, i.e. the third end 4111 and the fourth end 4112 have a distance in the second direction b. Through the above arrangement, the second arc-shaped segment 4113 of the first connecting arm 411 may enable the third end 4111 and the fourth end 4112 of the first connecting arm 411 to be not in the same plane, and the third end 4111 of the first connecting arm 411 is adapted to the height of the position where the track rod 300 is connected with the drop arm 200, so that the axis of the track rod 300 is conveniently parallel to the third direction c, and the track rod 300 moves more smoothly along the third direction c.
For convenience in connection of the right rocker unit 500 with the right wheel 40, in a preferred embodiment, the right rocker unit 500 includes a second rocker 510, a second maintenance module 520, and a second track rod 530. The second rocker 510 is connected to the left rocker unit 400, and when specifically provided, the second rocker 510 is connected to the second connecting arm 412. The second maintenance module 520 is connected to the second swing arm 510, and the second maintenance module 520 is rotatably mounted to the subframe 20 about its own axis. One end of the second steering side tie rod 530 is connected with the second rocker arm 510, the other end of the second steering side tie rod 530 is connected with the right wheel 40, and when specifically set, the second steering side tie rod 530 is connected with the second rocker arm 510 and the right wheel 40 through ball joints.
With the above arrangement, when the second link arm 412 in the left rocker unit 400 rotates, the second link arm 412 rotates the second rocker 510 through the second maintenance module 520, and the rotation of the second rocker 510 rotates the second steering side link 530, and the right wheel 40 connected to the second steering side link 530 rotates. When the second rocker arm 510 rotates through the second maintenance module 520, the second maintenance module 520 rotates around its own axis, the second maintenance module 520 moves relative to the subframe 20, and the subframe 20 remains stationary.
For convenience in connection of the second swing arm 510 with the left swing arm unit 400, specifically, the vertical steering gear 10 further includes a tie rod 600, and both ends of the tie rod 600 are connected with the left swing arm unit 400 and the second swing arm 510, respectively. When specifically arranged, both ends of the tie rod 600 are respectively connected with the second connecting arm 412 and the second rocker 510, and the tie rod 600 is connected with the second connecting arm 412 and the second rocker 510 through ball joints. With the above arrangement, the second connecting arm 412 is rotated by the second maintenance module 520 by driving the rotation of the tie rod 600, so that the second connecting arm 412 connected to the tie rod 600 is rotated by the second maintenance module 520.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a first maintenance module 420 according to an embodiment of the present application, and in some embodiments, in order to more conveniently implement the rotatable mounting of the first maintenance module 420 to the subframe 20, specifically, the first maintenance module 420 includes a rotation bearing 421, a pin 422, and a fastener 423. The rotary bearing 421 is axially rotatably sleeved outside the pin 422 around the pin 422, and the rotary bearing 421 is connected with the first rocker arm 410, and when the rotary bearing 421 is specifically arranged, the rotary bearing 421 is nested in the connecting ring 413. The bottom of round pin axle 422 is connected with sub vehicle frame 20 can be dismantled, and fastener 423 is worn to establish on the top of round pin axle 422 and can be dismantled with fastener 423 and be connected, and when specifically setting, fastener 423 prefers to lock nut, and the bottom of round pin axle 422 is connected with sub vehicle frame 20 can be dismantled through the bolt, and the part that the round pin axle 422 top surpassed lock nut also can be dismantled with sub vehicle frame 20 through the bolt and be connected, and fastener 423 and the top butt of rolling bearing 421.
In order to strengthen the connection strength between the pin shaft 422 and the auxiliary frame 20, the top end and the bottom end of the pin shaft 422 are respectively provided with a vertical bearing surface, the pin shaft 422 is connected with the auxiliary frame 20 through bolts passing through the bearing surfaces, and the design of the vertical bearing surfaces is convenient for enlarging the contact area between the bolts and the pin shaft 422, so that the connection between the pin shaft 422 and the auxiliary frame 20 is more fastened.
It should be noted that the present horizontal steering transmission device and the subframe are at the same height, and the problem of easy scraping and collision exists. The vertical steering transmission device 10 in the application extends along the first direction a through the output end of the vertical steering device 100, the steering vertical arm 200 connected with the output end of the vertical steering device 100 extends along the second direction b, the steering vertical rod 300 connected with the steering vertical arm 200 extends along the third direction c, the left rocker arm unit 400 is mounted on the auxiliary frame 20 and connected with the steering vertical rod 300, the vertical steering transmission device 10 can be conveniently located above the auxiliary frame 20, the protection performance is good, the scraping and the collision are not easy, and the reliability is high.
The existing horizontal steering transmission device is arranged in front of the wheels, so that the problems of large occupied space and the like exist, and the vertical steering transmission device 10 in the application can be positioned at the middle and rear of the wheels, so that the space utilization rate is improved. It should be emphasized that the first rocker arm 410, the second rocker arm 510, the first steering side tie rod 430 and the second steering side tie rod 530 in the present application form a steering trapezoid structure, so that the vertical steering transmission device 10 is compact.
In order to reduce maintenance costs for users, more specifically, the first maintenance module 420 includes a seal ring 424 and an oil seal 425, the seal ring 424 is sleeved on the pin shaft 422 and located on a side of the rotary bearing 421 away from the fastening member 423, and the oil seal 425 is sleeved on the pin shaft 422 and located between the rotary bearing 421 and the fastening member 423. Through the arrangement, the sealing rings 424 and the oil seals 425 seal the two ends of the rotary bearing 421, so that lubricating grease does not need to be added regularly, the maintenance cost of a user is reduced, and the life-long maintenance-free effect is achieved. It should be noted that the structure of the second maintenance module 520 is similar to that of the first maintenance module 420, and will not be described herein.
The present application also provides an independent suspension system comprising a vertical steering gear 10 according to any of the embodiments described above.
In the independent suspension system, the independent suspension system comprises the vertical steering transmission device 10, the vertical steering device 100 in the vertical steering transmission device 10 drives the steering vertical arm 200 to swing so as to drive the steering vertical rod 300 connected with the steering vertical arm 200 to move along the third direction c, the steering vertical rod 300 enables the left rocker arm unit 400 connected with the steering vertical rod 300 to rotate, the left rocker arm unit 400 drives the left wheel 30 to rotate, and meanwhile, the right rocker arm unit 500 connected with the left rocker arm unit 400 drives the right wheel 40 to rotate, so that the running direction of the vehicle is changed. And the steering vertical arm 200 extends along the second direction b, namely the Z-axis direction, the steering vertical arm 200 rotates around the output end of the vertical steering gear 100 to drive the steering vertical rod 300 to move along the third direction c, namely the Y-axis direction, the space in the Z-axis direction and the Y-axis direction is fully utilized, the problem that the traditional horizontally arranged steering transmission device occupies large transverse space of the vehicle is solved, the problem that the heat dissipation is poor due to insufficient installation space of components such as a radiator and a car lamp is avoided, the new energy vehicle also has enough space to directly install the steering gear and the steering column, an angle transmission box is not required to be added, and meanwhile, the hydraulic pipeline arrangement is facilitated.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A vertical steering transmission, mounted to a subframe, for driving left and right wheels to steer, the vertical steering transmission comprising:
the output end of the vertical steering gear extends along a first direction;
the vertical steering device comprises a vertical steering device, a steering drop arm, a steering control device and a control device, wherein the vertical steering device comprises a vertical steering device, a steering drop arm and a steering control device, the vertical steering device comprises a vertical steering device, a steering control device and a steering control device, wherein the vertical steering device comprises a vertical steering device, a steering drop arm extends along a second direction, and a first end of the vertical steering device in the second direction is connected with an output end of the vertical steering device;
the steering longitudinal pull rod extends along a third direction, one end of the steering longitudinal pull rod is connected with a second end, which is far away from the vertical steering device, of the steering vertical arm in the third direction, and the third direction, the second direction and the first direction are perpendicular to each other;
the left rocker arm unit is rotatably arranged on the auxiliary frame and is used for connecting the left wheel with one end, away from the steering vertical arm, of the steering vertical rod;
and the right rocker arm unit is rotatably arranged on the auxiliary frame and is connected with the left rocker arm unit and the right wheel.
2. The vertical steering gear of claim 1, wherein the drop arm includes a first arcuate segment protruding in the first direction, the first arcuate segment having ends that connect the first and second ends of the drop arm, respectively, such that the first and second ends are not in the same plane.
3. The vertical steering gear according to claim 1, wherein the left rocker unit comprises a first rocker, a first maintenance module, and a first steering side tie rod, wherein:
the first rocker arm is connected with one end of the steering vertical arm, which is away from the steering vertical arm, of the steering vertical rod;
the first maintenance module is rotatably arranged on the auxiliary frame around the axis of the first maintenance module and is connected with the first rocker arm;
one end of the first steering side pull rod is connected with the first rocker arm, and the other end of the first steering side pull rod is connected with the left wheel.
4. The vertical steering gear of claim 3, wherein the first rocker arm comprises a first connecting arm, a second connecting arm, and a connecting ring, wherein:
one end of the first connecting arm is connected with the steering longitudinal pull rod, and the other end of the first connecting arm is connected with the second connecting arm in an angle;
one end of the second connecting arm, which is away from the first connecting arm, is connected with the first steering side pull rod;
the connecting ring is arranged at the joint of the first connecting arm and the second connecting arm, and the connecting ring is sleeved on the outer side of the first maintenance module.
5. The vertical steering gear according to claim 4, wherein one end of the first connecting arm connected to the tie rod is a third end, one end of the first connecting arm connected to the second connecting arm is a fourth end, the first connecting arm further includes a second arc-shaped section protruding in the second direction, and both ends of the second arc-shaped section are respectively connected to the third end and the fourth end of the first connecting arm such that the third end and the fourth end are not in the same plane.
6. The vertical steering transmission device according to claim 1, wherein the right rocker unit includes a second rocker, a second maintenance module, and a second steering side tie rod, the second rocker is connected to the left rocker unit, the second maintenance module is connected to the second rocker, and the second maintenance module is rotatably mounted to the subframe around its own axis, one end of the second steering side tie rod is connected to the second rocker, and the other end of the second steering side tie rod is connected to the right wheel.
7. The vertical steering gear according to claim 6, further comprising a tie rod, both ends of which are connected to the left rocker unit and the second rocker, respectively.
8. The vertical steering transmission device according to claim 3, wherein the first maintenance module comprises a rotating bearing, a pin shaft and a fastener, the rotating bearing is axially rotatably sleeved on the outer side of the pin shaft around the pin shaft, the rotating bearing is connected with the first rocker arm, the bottom end of the pin shaft is detachably connected with the auxiliary frame, the top end of the pin shaft is penetrated with the fastener and detachably connected with the fastener, and the fastener is abutted against the top end of the rotating bearing.
9. The vertical steering gear of claim 8, wherein the first maintenance module comprises a seal ring and an oil seal, the seal ring is sleeved on the pin shaft and located on a side of the rotating bearing away from the fastener, and the oil seal is sleeved on the pin shaft and located between the rotating bearing and the fastener.
10. An independent suspension system comprising a vertical steering gear as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311770045.2A CN117565972A (en) | 2023-12-21 | 2023-12-21 | Vertical steering transmission device and independent suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311770045.2A CN117565972A (en) | 2023-12-21 | 2023-12-21 | Vertical steering transmission device and independent suspension system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117565972A true CN117565972A (en) | 2024-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311770045.2A Pending CN117565972A (en) | 2023-12-21 | 2023-12-21 | Vertical steering transmission device and independent suspension system |
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| Country | Link |
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| CN (1) | CN117565972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12559172B2 (en) * | 2021-11-22 | 2026-02-24 | Zf Friedrichshafen Ag | Steering axle for a steerable vehicle and industrial truck |
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