CN113353147A - New energy commercial vehicle steering system - Google Patents
New energy commercial vehicle steering system Download PDFInfo
- Publication number
- CN113353147A CN113353147A CN202110712185.9A CN202110712185A CN113353147A CN 113353147 A CN113353147 A CN 113353147A CN 202110712185 A CN202110712185 A CN 202110712185A CN 113353147 A CN113353147 A CN 113353147A
- Authority
- CN
- China
- Prior art keywords
- steering
- pull rod
- knuckle
- swing arm
- new energy
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
-
- 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
- B62D7/18—Steering knuckles; King pins
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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 invention discloses a steering system of a new energy commercial vehicle, which comprises a steering wheel, a column tube with an intermediate shaft assembly, a steering gear, a steering plumbing arm, a steering drag link, a left steering knuckle and a right steering knuckle, a tie rod arranged between the left steering knuckle and the right steering knuckle, and a pair of connecting pull rods. The electric circulating ball type steering system adopting the disconnected steering trapezoid structure can provide power assistance which is larger than that of an electric gear-rack type steering device, can provide reliable steering power assistance for a vehicle with a front axle load of 1.6-3 tons, does not need to adopt a high-price electric hydraulic pump, so that the cost of system parts is low, the high energy consumption required by the electric hydraulic pump is avoided, and the problems of oil leakage and oil leakage are avoided because no steering fluid is adopted; and is stable and reliable.
Description
Technical Field
The invention relates to the technical field of vehicle steering, in particular to a steering system of a commercial vehicle with a new energy source.
Background
The steering system of automobile is a mechanism for maintaining or changing the running direction of automobile, and it controls the rotation of steering wheel around main pin by steering wheel and related steering transmission and actuating mechanism to implement the steering of automobile, which is the most basic steering function of automobile. There are two types of trapezoidal structures of the steering system: the other is an integral trapezoidal structure which is matched with a non-independent suspension and is a circulating ball steering gear matched integral bridge structure; the other is a disconnected trapezoidal structure matched with an independent suspension, and is a rack and pinion steering gear matched auxiliary frame structure. The steering system has two power-assisted forms: one is hydraulic power assistance, which utilizes a steering oil pump to push steering fluid to generate power assistance as a source of a steering system; one is electric power assist, which uses torque generated by an electric motor as a source of power assist for a steering system.
At present, in the field of light new energy commercial vehicles such as light trucks and light passengers, the two steering trapezoidal structures and the power-assisted form mainly exist, when the suspension form is determined to be an independent suspension, only a disconnected rack and pinion steering gear can be selected due to the motion mechanism, but only a hydraulic rack and pinion steering gear shown in figure 3 can be selected when the front axle load of the electric rack and pinion steering gear is exceeded because the electric rack and pinion steering gear can only meet the maximum 1.6-ton front axle load, the hydraulic pressure has the problems of high cost and high energy consumption, the parts of the system are more, the assembly and the maintenance are difficult, the quality problems of oil leakage, oil leakage and the like exist, and the electric rack and pinion steering gear is not environment-friendly.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide a new energy commercial vehicle steering system which can improve larger steering power without an electric hydraulic pump and is stable and reliable.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the steering system of the new energy commercial vehicle comprises a steering wheel, a column tube with an intermediate shaft assembly, a steering gear, a steering plumbing arm, a steering drag link, a left outer pull rod, a right outer pull rod, a left steering knuckle, a right steering knuckle and a tie rod arranged between the left steering knuckle and the right steering knuckle, wherein the steering drag link is hinged and connected with the left steering knuckle, the right steering knuckle and the butt joint end of the tie rod are hinged and connected through the left outer pull rod and the right outer pull rod respectively, and the steering gear is provided with an electric power-assisted structure.
Furthermore, the steering wheel, the column tube with the intermediate shaft assembly, the steering gear, the steering plumbing arm, the steering drag link, the left outer pull rod, the tie rod and the right outer pull rod are sequentially connected, the steering drag link is hinged with the end part of the left steering knuckle, the outer end of the left outer pull rod is hinged with the left steering knuckle, and the inner end of the left outer pull rod is hinged with the front part of the left end of the tie rod; the inner end of the right steering knuckle is only hinged with the outer end of the right outer pull rod, and the inner end of the right outer pull rod is hinged with the front part of the right end of the tie rod.
Furthermore, the steering gear is an electric recirculating ball steering gear, the electric power-assisted structure is integrated on the steering gear, the electric power-assisted structure adopts the specific structural forms of a motor, a speed reducing mechanism, a steering gear body, a steering plumbing arm and a controller, and the specific structural forms are common structures in the prior art.
Furthermore, the steering vertical arm and the steering drag link, the steering drag link and the left steering knuckle and the right steering knuckle, the left steering knuckle and the right steering knuckle and the left outer pull rod and the right outer pull rod as well as the left outer pull rod and the right outer pull rod and the tie rod are all hinged and connected through ball head pins.
Furthermore, the connecting pull rod is of a pull rod structure with adjustable length.
Further, still be connected with left horizontal swing arm and right horizontal swing arm on the drag link left and right side end, be connected with left horizontal swing arm support rotation axis assembly and right horizontal swing arm support rotation axis assembly on left horizontal swing arm and the right horizontal swing arm respectively, left horizontal swing arm's one end links to each other with the one end of drag link is articulated, left horizontal swing arm's the other end links to each other with left horizontal swing arm support rotation axis assembly is articulated, right horizontal swing arm's one end links to each other with the other end of drag link is articulated, right horizontal swing arm's the other end links to each other with right horizontal swing arm support rotation axis assembly is articulated.
Furthermore, the left steering knuckle and the right steering knuckle are U-shaped steering knuckles, the steering drag link is hinged with the inner ends of the U-shaped steering knuckles, and the outer ends of the left outer pull rod and the right outer pull rod are hinged with the outer side body of the left steering knuckle of the U-shaped structure; the inner ends of the left outer pull rod and the right outer pull rod are hinged with the front part of the end part of the tie rod; the hinged positions of the left transverse swing arm and the right transverse swing arm and the end part of the transverse pull rod are positioned outside the hinged positions of the inner ends of the left outer pull rod and the right outer pull rod and the end part of the transverse pull rod; the structure is stable and reliable, can bear larger steering power, and is stable and reliable.
Compared with the prior art, the invention has the following advantages:
the steering system of the new energy commercial vehicle is an electric circulating ball type steering system with a disconnected steering trapezoid structure, the power-assisted force provided by the steering system is larger than that of an electric gear-rack type steering gear, the steering system can provide reliable steering power-assisted force for a vehicle with a front axle load of 1.6-3 tons, and a high-price electric hydraulic pump is not needed, so that the cost of system parts is low, the high energy consumption required by the electric hydraulic pump is avoided, and the problems of oil leakage and oil leakage do not exist because no steering fluid exists; and is stable and reliable.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic structural diagram of a steering system of a new energy commercial vehicle steering system;
FIG. 2 is a schematic view of the connection between the left outer tie rod and the tie rod in the steering system of the commercial vehicle with a new energy source of the present invention;
fig. 3 is a schematic structural diagram of a conventional hydraulic rack-and-pinion steering system.
In FIGS. 1-3:
1. the steering wheel, 2, a column tube assembly with an intermediate shaft, 3, an electric circulating ball steering gear, 4, a steering vertical arm, 5, a steering drag link, 6, a left steering knuckle, 7, a left outer pull rod, 8, a left transverse swing arm, 9, a left transverse swing arm supporting rotating shaft assembly, 10, a transverse pull rod, 11, a right transverse swing arm supporting rotating shaft assembly, 12, a right transverse swing arm, 13, a right outer pull rod and 14, a right steering knuckle.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the new energy commercial vehicle steering system adopts an electric circulating ball type steering system with a disconnected steering trapezoid structure, and comprises a steering wheel 1, a column tube with an intermediate shaft assembly 2, a steering gear 3, a steering drop arm 4, a steering drag link 5, a left outer pull rod 7, a right outer pull rod 13, a left steering knuckle 6, a right steering knuckle 14, and a tie rod 10 arranged between the left steering knuckle 6 and the right steering knuckle 14, wherein the steering drag link 5 is hinged with the left steering knuckle 6, butt ends of the left steering knuckle 6, the right steering knuckle 14 and the tie rod 10 are hinged through the left outer pull rod 7 and the right outer pull rod 13 respectively, and the steering gear 3 is provided with an electric power-assisted structure.
The steering gear 3 is an electric circulating ball steering gear, an electric power-assisted structure is integrated on the steering gear 3, the electric power-assisted structure adopts the specific structural form of a motor, a speed reducing mechanism, a steering gear body, a steering plumbing arm and a controller, and the specific structural form is a common structure in the prior art.
Between steering vertical arm 4 and the steering drag link 5, between steering drag link 5 and left knuckle 6, between right knuckle 14, between left knuckle 6, right knuckle 14 and left outer pull rod 7 and right outer pull rod 13 and between left outer pull rod 7 and right outer pull rod 13 and tie rod 10 are all ball head pin hinged and connected, and is reliable and stable, and left outer pull rod 7 and right outer pull rod 13 are the pull rod structure of adjustable length, can also be other regulation modes for the screw thread adjustment, the installation adjustment of being convenient for.
The device also comprises a left transverse swing arm 8, a right transverse swing arm 12, a left transverse swing arm supporting rotating shaft assembly 9 and a right transverse swing arm supporting rotating shaft assembly 11; the transverse swing arm supporting rotating shaft assembly on one side is hinged with the end part of the transverse pull rod through the transverse swing arm on the corresponding side. The concrete structure does, and the one end of left horizontal swing arm 8 links to each other with the one end of drag link 10 is articulated, and the other end of left horizontal swing arm 8 supports rotation axis assembly 9 with left horizontal swing arm and articulates and links to each other, and the one end of right horizontal swing arm 12 links to each other with the other end of drag link 10 is articulated, and the other end of right horizontal swing arm 12 supports rotation axis assembly 11 with right horizontal swing arm and articulates and links to each other.
The left steering knuckle 6 and the right steering knuckle 14 are both U-shaped steering knuckles, the steering straight pull rod 5 is hinged with the inner ends of the U-shaped steering knuckles, and the outer ends of the left outer pull rod 7 and the right outer pull rod 13 are hinged with the outer side body of the U-shaped steering knuckle 6; the inner ends of the left outer pull rod 7 and the right outer pull rod 13 are hinged with the front part of the end part of the tie rod 10; the hinged parts of the left transverse swing arm 8 and the right transverse swing arm 12 and the end part of the transverse pull rod 10 are positioned outside the hinged parts of the inner ends of the left outer pull rod 7 and the right outer pull rod 13 and the end part of the transverse pull rod 10; the structure is stable and reliable, can bear larger steering power, and is stable and reliable.
The pair of connecting pull rods are a left outer pull rod 7 and a right outer pull rod 13; the steering wheel 1, the column tube with the intermediate shaft assembly 2, the steering gear 3, the steering plumbing arm 4, the steering drag link 5, the left outer pull rod 7, the tie rod 10 and the right outer pull rod 13 are sequentially connected, the steering drag link 5 is hinged with the end part of the left steering knuckle 6, the outer end of the left outer pull rod 7 is hinged with the left steering knuckle 6, and the inner end of the left outer pull rod 7 is hinged with the front part of the left end of the tie rod 10; the inner end of the right steering knuckle 14 is only hinged with the outer end of the right outer pull rod 13, and the inner end of the right outer pull rod 13 is hinged with the front part of the right end of the tie rod 10.
The axes of the hinging rotating shafts of the left outer pull rod 7, the right outer pull rod 13, the left steering knuckle 6 and the right steering knuckle 14, and the axes of the hinging rotating shafts of the left transverse swing arm 8, the right transverse swing arm 12 and the transverse pull rod 10 are vertical axes in a natural state, and the axes of the hinging rotating shafts of the left outer pull rod 7, the right outer pull rod 13 and the transverse pull rod 10 are horizontal axes in a natural state, so that the steering mechanism is stable and reliable; the invention relates to a disconnected type three-section left outer pull rod 7, a tie rod 10 and a right outer pull rod 13.
The invention aims to provide a novel disconnected steering trapezoid structure, which enables a new energy commercial vehicle with a front axle load below 3 tons to adopt an electric power steering system of an electric circulating ball steering gear, can provide larger power assistance than the electric gear-rack steering gear, does not need to adopt a high-price electric hydraulic pump, has low system part cost and high energy consumption required by the electric hydraulic pump, and does not have the problems of oil leakage and oil leakage because of no steering fluid.
When a driver rotates the steering wheel 1, the electric control unit receives signals such as torque, vehicle speed and the like, controls the current of the direct current motor, the power of the motor is transmitted to the steering gear through the speed reducing mechanism, then transmitted to the steering straight pull rod 5 through the rotation of the steering vertical arm and then transmitted to the left steering knuckle 6, so that the left steering knuckle 6 drives the left steering wheel to steer, meanwhile, the left steering knuckle 6 pushes/pulls the left outer pull rod 7, and then drives the cross pull rod 10 (can swing through the left and right swing arms) to push the right outer pull rod 13 to drive the right steering knuckle 14 to rotate, thereby pushing the right wheel to steer.
The steering system is an electric circulating ball type steering system with a disconnected steering trapezoid structure, can provide power assistance which is larger than that of an electric gear-rack type steering gear, can provide reliable steering power assistance for vehicles with front axle loads of 1.6-3 tons, does not need to adopt a high-price electric hydraulic pump, and is stable and reliable.
The above-mentioned features are merely for describing preferred embodiments of the present invention and may be arbitrarily combined to form a plurality of embodiments of the present invention.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (9)
1. The utility model provides a new energy commercial car a steering system, includes steering wheel, column pipe area jackshaft assembly, steering gear, turns to plumbing arm, turns to drag link, left outer pull rod, right outer pull rod, left knuckle, right knuckle and establish the tie rod between left knuckle and right knuckle, its characterized in that: the steering drag link is hinged with the left steering knuckle, the butt joint ends of the left steering knuckle and the right steering knuckle are hinged with the tie rod through the left outer pull rod and the right outer pull rod respectively, and the steering gear is provided with an electric power-assisted structure.
2. The new energy commercial vehicle steering system of claim 1, wherein: the steering wheel, the column tube assembly with the intermediate shaft, the steering gear, the steering plumbing arm, the steering straight pull rod, the left outer pull rod, the tie rod and the right outer pull rod are sequentially connected.
3. The new energy commercial vehicle steering system of claim 1, wherein: the steering gear is an electric circulating ball steering gear.
4. The new energy commercial vehicle steering system of claim 1, wherein: and the steering vertical arm and the steering drag link, the steering drag link and the steering knuckle, the steering knuckle and the connecting pull rod and the tie rod are hinged and connected by ball pins.
5. The new energy commercial vehicle steering system of claim 1, wherein: the connecting pull rod is of a pull rod structure with adjustable length.
6. The new energy commercial vehicle steering system of claim 1, wherein: the utility model discloses a horizontal pull rod, including horizontal pull rod, left and right side end, be connected with left and right horizontal swing arm respectively and support rotation axis assembly and right horizontal swing arm support rotation axis assembly on left and right horizontal swing arm, the one end of left side horizontal swing arm links to each other with the one end of horizontal pull rod is articulated, the other end of left side horizontal swing arm and left horizontal swing arm support rotation axis assembly articulate and link to each other, the one end of right side horizontal swing arm links to each other with the other end of horizontal pull rod is articulated, the other end of right side horizontal swing arm and right horizontal swing arm support rotation axis assembly articulate and link to each other.
7. The new energy commercial vehicle steering system of claim 6, wherein: the left steering knuckle and the right steering knuckle are U-shaped steering knuckles, the steering straight pull rod is hinged to the inner ends of the U-shaped steering knuckles, and the outer ends of the left outer pull rod and the right outer pull rod are hinged to a body on the outer side of the left steering knuckle of the U-shaped structure.
8. The new energy commercial vehicle steering system of claim 7, wherein: the inner end of the connecting pull rod is hinged with the front part of the end part of the tie rod.
9. The new energy commercial vehicle steering system of claim 7, wherein: the hinged position of the transverse swing arm and the end part of the transverse pull rod is positioned outside the hinged position of the inner end of the connecting pull rod and the end part of the transverse pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110712185.9A CN113353147A (en) | 2021-06-25 | 2021-06-25 | New energy commercial vehicle steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110712185.9A CN113353147A (en) | 2021-06-25 | 2021-06-25 | New energy commercial vehicle steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113353147A true CN113353147A (en) | 2021-09-07 |
Family
ID=77536543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110712185.9A Withdrawn CN113353147A (en) | 2021-06-25 | 2021-06-25 | New energy commercial vehicle steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113353147A (en) |
-
2021
- 2021-06-25 CN CN202110712185.9A patent/CN113353147A/en not_active Withdrawn
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210907 |
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| WW01 | Invention patent application withdrawn after publication |