CN114852162A - Novel electric steering mechanism of agricultural tractor - Google Patents

Novel electric steering mechanism of agricultural tractor Download PDF

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Publication number
CN114852162A
CN114852162A CN202210306347.3A CN202210306347A CN114852162A CN 114852162 A CN114852162 A CN 114852162A CN 202210306347 A CN202210306347 A CN 202210306347A CN 114852162 A CN114852162 A CN 114852162A
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CN
China
Prior art keywords
steering
steering mechanism
rod
rack
automatic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210306347.3A
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Chinese (zh)
Inventor
浦毅
李明亮
韦东
胡敏娟
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Yancheng Institute of Industry Technology
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Yancheng Institute of Industry Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yancheng Institute of Industry Technology filed Critical Yancheng Institute of Industry Technology
Priority to CN202210306347.3A priority Critical patent/CN114852162A/en
Publication of CN114852162A publication Critical patent/CN114852162A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/04Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D1/00Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/04Hand wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D3/00Steering gears
    • B62D3/02Steering gears mechanical
    • B62D3/12Steering gears mechanical of rack-and-pinion type

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

The invention discloses a novel electric steering mechanism of an agricultural tractor, which comprises a steering system, steering wheels and a reset mechanism arranged on the steering wheels, wherein the steering system comprises a manual steering mechanism and an automatic steering mechanism, the steering wheels are arranged in bilateral symmetry, a rack connecting rod is fixedly arranged between the two steering wheels through a pin rod, a manual steering rack and an automatic steering rack are arranged on the outer wall of the rack connecting rod, the manual steering mechanism is connected with the manual steering rack through first gear meshing, and the automatic steering mechanism is connected with the automatic steering rack through second gear meshing, and the novel electric steering mechanism has the advantages that: the steering device has the advantages of simple structure, reasonable design of installation positions and two different steering modes of manual operation and automatic operation; moreover, the switching mode between two kinds of modes that turn to is simple, and the switching is smooth and easy, and is low to the operating requirement, still possesses the function that turns to the reset simultaneously.

Description

Novel electric steering mechanism of agricultural tractor
Technical Field
The invention relates to the technical field of agricultural tractors, in particular to a novel electric steering mechanism of an agricultural tractor.
Background
Agricultural equipment such as agricultural tractors serves as farm mechanized operation carrying and power platforms, and automatic driving is a prerequisite condition for intellectualization of agricultural machinery operation. In order to make the automatic driving operation of agricultural machinery more accurate, more intelligent and safer, the intellectualization of the operation of agricultural machinery is more and more receiving high attention at home and abroad. Therefore, it is very important to realize automatic steering. At present, electric control steering actuating mechanisms of agricultural machinery such as tractors are divided into two types: the first type is that a motor drives a speed reducing mechanism to drive a steering wheel to steer; the second is direct drive or torque motor directly driving the steering wheel to turn. However, both of the above methods have the following problems: 1. the cost is high; 2. the structure is complex, the volume is large, and the weight is heavy; 3. the installation and maintenance are inconvenient in the later period; 4. the manual and automatic switching is not smooth; 5. the installation accuracy requirement is high.
Disclosure of Invention
The invention aims to provide a novel electric steering mechanism of an agricultural tractor, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel agricultural tractor electric steering mechanism, includes a steering system and directive wheel, a steering system includes manual steering mechanism and automatic steering mechanism, the directive wheel sets up, two for bilateral symmetry there is the rack connecting rod through pin rod fixed mounting between the directive wheel, be provided with manual steering rack and automatic steering rack on the outer wall of rack connecting rod, manual steering mechanism connects manual steering rack through first gear engagement, automatic steering mechanism connects automatic steering rack through second gear engagement, there is first bolt, two still fixed mounting at the both ends of rack connecting rod one side fixedly connected with connecting rod that the directive wheel is close to each other, fixed mounting has the second bolt on the connecting rod, fixedly connected with turns to reset spring between first bolt and the second bolt.
As a further scheme of the invention: the manual steering mechanism comprises a steering wheel and a transmission rod, the bottom of the steering wheel is fixedly connected with a steering rod, the bottom of the steering rod is fixedly connected with a hydraulic rod, the transmission rod is fixedly installed at the top axle center of the first gear, a rotating disc is fixedly installed at the top of the transmission rod, a spring piece is fixedly installed at the top of the rotating disc, a disc is fixedly connected with the bottom of the hydraulic rod, and the disc is located at the top of the spring piece.
As a further scheme of the invention: the hydraulic rod comprises an inner rod and an outer rod, the sections of the inner rod and the outer rod are of square structures, and the outer wall of the steering rod is fixed through a bearing.
As a further scheme of the invention: the rolling disc is the same as the bearing structure and comprises an inner ring and an outer ring, wherein the inner ring is fixedly connected with the transmission rod, the top of the outer ring is fixedly connected with the spring pieces, the spring pieces are arranged in a plurality of annular shapes, one end of each spring piece, which is connected with the rolling disc, is horizontally arranged, and the other end of each spring piece is tilted upwards and clings to the bottom of the disc.
As a further scheme of the invention: the automatic steering mechanism is specifically a motor, and a power output end of the motor is fixedly connected with the axle center of the second gear.
As a further scheme of the invention: the steering wheel is provided with an operating button, and the operating button comprises a power switch for controlling the automatic steering mechanism and the hydraulic rod.
As a further scheme of the invention: the manual steering rack and the automatic steering rack are respectively positioned on two different side surfaces of the rack connecting rod.
Compared with the prior art, the invention has the beneficial effects that: the steering device has the advantages of simple structure, reasonable design of installation positions and two different steering modes of manual operation and automatic operation; moreover, the switching mode between two kinds of modes that turn to is simple, and the switching is smooth and easy, and is low to the operating requirement, still possesses the function that turns to the reset simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the straight-driving state of the present invention;
FIG. 2 is a schematic structural view of a left-hand steering driving state of the present invention;
FIG. 3 is a schematic view of the present invention in a turn-to-drive state;
FIG. 4 is a schematic view of the construction of the hand-operated steering mechanism of the present invention;
fig. 5 is a sectional view of the structure of the rotating disk of the present invention.
In the figure: 1. a steering system; 2. a steering wheel; 3. a manual steering mechanism; 301. a steering wheel; 302. a steering lever; 303. a hydraulic rod; 304. a transmission rod; 305. rotating the disc; 306. a spring plate; 307. a disc; 4. an automatic steering mechanism; 5. a rack connecting rod; 6. a manual steering rack; 7. an automatic steering rack; 8. a first gear; 9. a second gear; 10. a first latch; 11. a connecting rod; 12. a second bolt; 13. a steering return spring; 14. and operating the button.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, in the embodiment of the invention, a novel electric steering mechanism of an agricultural tractor comprises a steering system 1, steering wheels 2 and a reset mechanism installed on the steering wheels 2, wherein the steering system 1 comprises a manual steering mechanism 3 and an automatic steering mechanism 4, the steering wheels 2 are arranged in bilateral symmetry, a rack connecting rod 5 is fixedly installed between the two steering wheels 2 through a pin rod, a manual steering rack 6 and an automatic steering rack 7 are arranged on the outer wall of the rack connecting rod 5, the manual steering mechanism 3 is meshed and connected with the manual steering rack 6 through a first gear 8, and the automatic steering mechanism 4 is meshed and connected with the automatic steering rack 7 through a second gear 9.
It is noted that the return mechanism includes a first pin 10 fixedly installed at both ends of the rack bar connecting rod 5 and a connecting rod 11 fixedly installed inside the steering wheel 2, a second bolt 12 is arranged at the other end of the connecting rod 11, a steering return spring 13 is fixedly arranged on the first bolt 10 and the second bolt 12, a fixed mounting disc is arranged on the inner side of the steering wheel 2, wherein the rack connecting rod 5 and the connecting rod 11 are both connected on the mounting disc, the steering of the steering wheel 2 is controlled by controlling the steering of the mounting disc, the steering return springs 13 at the two sides can generate compression deformation or stretching deformation along with the displacement of the steering wheel 2 and the rack connecting rod 5, after the steering is finished, the steering return springs 13 on the two sides can automatically correct the direction, so that the whole system keeps running in a straight line state, and the steering return springs 13 are in a balanced state in the straight line state.
It should be noted that the manual steering mechanism 3 includes a steering wheel 301 and a transmission rod 304, the bottom of the steering wheel 301 is fixedly connected to a steering rod 302, the bottom of the steering rod 302 is fixedly connected to a hydraulic rod 303, the transmission rod 304 is fixedly installed at the top axis of the first gear 8, the top of the transmission rod 304 is fixedly installed with a rotation disc 305, the top of the rotation disc 305 is fixedly installed with a spring plate 306, the bottom of the hydraulic rod 303 is fixedly connected to a disc 307, the disc 307 is located at the top of the spring plate 306, the rotation disc 305 has the same bearing structure as the bearing structure and is composed of an inner ring and an outer ring, wherein the inner ring is fixedly connected to the transmission rod 304, the top of the outer ring is fixedly connected to the spring plate 306, the spring plates 306 are in a plurality of annular arrangements, one end of the spring plate 306 connected to the rotation disc 305 is horizontally arranged, and the other end is tilted upward and tightly attached to the bottom of the disc 307, a limiting groove is arranged between the outer ring of the rotating disc 305 and the disc 307, the position of the limiting groove corresponds to the position of the spring piece 306, when the rotating disc 305 and the disc 307 are attached, the thickness of one spring piece 306 is just completely accommodated in the upper and lower limiting grooves, the limiting grooves enable greater friction resistance to be achieved between the rotating disc 305 and the disc 307 during transmission, and transmission efficiency is higher when the rotating disc 305 and the disc 307 are attached together.
It is worth noting that the hydraulic rod 303 is composed of an inner rod and an outer rod, the cross sections of the inner rod and the outer rod are both square structures, the outer wall of the steering rod 302 is fixed through a bearing, after the position and the height of the steering rod 302 are fixed, the steering wheel 301 is not affected in rotation, and the hydraulic rod 303 with the square structure design enables the whole manual steering mechanism 3 to be higher in transmission efficiency when rotating.
It should be noted that the automatic steering mechanism 4 is specifically a motor, and a power output end of the motor is fixedly connected to an axis of the second gear 9.
It should be noted that the steering wheel 301 is of a three-piece structure, the steering wheel 301 is provided with an operation button 14, the operation button 14 comprises a power switch for controlling the automatic steering mechanism 4 and the hydraulic rod 303, and manual and automatic operation of the steering system is freely switched by controlling the automatic steering mechanism 4 and the hydraulic rod 303 to be started.
It is worth noting that the manual steering rack 6 and the automatic steering rack 7 are respectively arranged on two different sides of the rack connecting rod 5, so that the mutual interference between two sets of steering mechanisms arranged in space can be well avoided.
Example (b):
operation of the manual steering mechanism:
the hydraulic rod 303 is controlled to descend by the control button 14, so that the rotating disc 305 and the disc 307 are attached together, the motor is controlled to stop running, and after the rotating disc 305 and the disc 307 are attached together, the steering wheel 301 and the first gear (8) are connected into a whole, so that when the steering wheel 301 is rotated, the first gear 8 correspondingly rotates, the rack connecting rod 5 is driven to displace left and right by the manual steering rack (6), and the steering action of the steering wheel 2 is completed;
operation of the automatic steering mechanism:
the hydraulic rod 303 is controlled to ascend through the control button 14, so that the rotating disc 305 is separated from the disc 307, the spring piece 306 restores to deform to jack up the disc 307, the motor is controlled to operate, the power output of the motor drives the rack connecting rod 5 to displace left and right through the second gear 9 and the automatic steering rack (7), then the steering action of the steering wheel 2 is completed, when the rack connecting rod 5 displaces, the power output is transmitted to the transmission rod 304 through the manual steering rack 6, but the top of the transmission rod 304 is connected with the inner ring of the rotating disc 305, so that the spring piece 306 connected with the outer ring is not influenced, and the steering wheel 301 is not influenced by rotation;
resetting the state:
when the steering wheel 2 is steered, the second bolt 12 on the connecting rod 11 and the first bolt 10 on the rack connecting rod 5 apply pressure or tensile force to the steering return spring 13, and after the steering is finished, the steering return spring 13 drives the steering wheel 2 to return through self elastic potential energy.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. The utility model provides a novel agricultural tractor electric steering mechanism, includes a steering system (1) and directive wheel (2), its characterized in that: the steering system (1) comprises a manual steering mechanism (3) and an automatic steering mechanism (4), the steering wheels (2) are arranged in a bilateral symmetry mode, two rack connecting rods (5) are fixedly arranged between the steering wheels (2) through pin rods, manual steering racks (6) and automatic steering racks (7) are arranged on the outer walls of the rack connecting rods (5), the manual steering mechanism (3) is connected with the manual steering racks (6) through first gears (8) in a meshed mode, the automatic steering mechanism (4) is connected with the automatic steering racks (7) through second gears (9) in a meshed mode, first bolts (10) are fixedly arranged at the two ends of the rack connecting rods (5), two connecting rods (11) are fixedly connected to one side, close to each other, of the steering wheels (2), and second bolts (12) are fixedly arranged on the connecting rods (11), a steering return spring (13) is fixedly connected between the first bolt (10) and the second bolt (12).
2. A novel agricultural tractor electric power steering mechanism as defined by claim 1 wherein: manual steering mechanism (3) include steering wheel (301) and transfer line (304), the bottom fixed connection steering column (302) of steering wheel (301), the bottom fixed connection hydraulic stem (303) of steering column (302), transfer line (304) fixed mounting is in the top axle center department of first gear (8), the top fixed mounting of transfer line (304) has rolling disc (305), the top fixed mounting of rolling disc (305) has spring leaf (306), the bottom fixed connection disc (307) of hydraulic stem (303), disc (307) are located the top of spring leaf (306).
3. A novel agricultural tractor electric power steering mechanism according to claim 2, characterized in that: the hydraulic rod (303) is composed of an inner rod and an outer rod, the sections of the inner rod and the outer rod are both square structures, and the outer wall of the steering rod (302) is fixed through a bearing.
4. A novel agricultural tractor electric power steering mechanism according to claim 2, characterized in that: the rotating disc (305) is the same as the bearing structure and comprises an inner ring and an outer ring, wherein the inner ring is fixedly connected with the transmission rod (304), the top of the outer ring is fixedly connected with the spring pieces (306), the spring pieces (306) are arranged in a plurality of annular shapes, one end of each spring piece (306) connected with the rotating disc (305) is horizontally arranged, and the other end of each spring piece (306) is upwards tilted and tightly attached to the bottom of the disc (307).
5. A novel agricultural tractor electric power steering mechanism as defined by claim 1 wherein: the automatic steering mechanism (4) is specifically a motor, and the power output end of the motor is fixedly connected with the axle center of the second gear (9).
6. A novel agricultural tractor electric power steering mechanism according to claim 2, characterized in that: the steering wheel (301) is provided with an operation button (14), and the operation button (14) comprises a power switch for controlling the automatic steering mechanism (4) and the hydraulic rod (303).
7. A novel agricultural tractor electric power steering mechanism as defined by claim 1 wherein: the manual steering rack (6) and the automatic steering rack (7) are respectively positioned on two different side surfaces of the rack connecting rod (5).
CN202210306347.3A 2022-03-25 2022-03-25 Novel electric steering mechanism of agricultural tractor Pending CN114852162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210306347.3A CN114852162A (en) 2022-03-25 2022-03-25 Novel electric steering mechanism of agricultural tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210306347.3A CN114852162A (en) 2022-03-25 2022-03-25 Novel electric steering mechanism of agricultural tractor

Publications (1)

Publication Number Publication Date
CN114852162A true CN114852162A (en) 2022-08-05

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ID=82629915

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210306347.3A Pending CN114852162A (en) 2022-03-25 2022-03-25 Novel electric steering mechanism of agricultural tractor

Country Status (1)

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CN (1) CN114852162A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003137124A (en) * 2001-11-06 2003-05-14 Toyota Motor Corp Steering device for vehicle
CN1603192A (en) * 2003-10-02 2005-04-06 日产自动车株式会社 Vehicle steering apparatus
CN101054091A (en) * 2006-04-13 2007-10-17 冯建中 Steering wheel retracting device for vehicle
CN103629265A (en) * 2012-08-27 2014-03-12 通用汽车环球科技运作有限责任公司 Tabbed clutch plates
CN112606820A (en) * 2020-12-17 2021-04-06 山东得知科技发展有限公司 Automobile safety system
CN112793659A (en) * 2021-03-05 2021-05-14 南京经纬达汽车科技有限公司 Redundant steering system with dual purposes of autonomous steering and power assisting and control method thereof
CN214573129U (en) * 2020-08-24 2021-11-02 吉林宸基建筑工程有限公司 Double-steering mechanism of road roller
CN215154991U (en) * 2021-03-05 2021-12-14 南京经纬达汽车科技有限公司 Rack-assisted steer-by-wire system and rack-assisted steering device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003137124A (en) * 2001-11-06 2003-05-14 Toyota Motor Corp Steering device for vehicle
CN1603192A (en) * 2003-10-02 2005-04-06 日产自动车株式会社 Vehicle steering apparatus
CN101054091A (en) * 2006-04-13 2007-10-17 冯建中 Steering wheel retracting device for vehicle
CN103629265A (en) * 2012-08-27 2014-03-12 通用汽车环球科技运作有限责任公司 Tabbed clutch plates
CN214573129U (en) * 2020-08-24 2021-11-02 吉林宸基建筑工程有限公司 Double-steering mechanism of road roller
CN112606820A (en) * 2020-12-17 2021-04-06 山东得知科技发展有限公司 Automobile safety system
CN112793659A (en) * 2021-03-05 2021-05-14 南京经纬达汽车科技有限公司 Redundant steering system with dual purposes of autonomous steering and power assisting and control method thereof
CN215154991U (en) * 2021-03-05 2021-12-14 南京经纬达汽车科技有限公司 Rack-assisted steer-by-wire system and rack-assisted steering device

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Application publication date: 20220805

RJ01 Rejection of invention patent application after publication