CN105835938B - The structure-improved of automatically controlled loader steering wheel - Google Patents
The structure-improved of automatically controlled loader steering wheel Download PDFInfo
- Publication number
- CN105835938B CN105835938B CN201610172223.5A CN201610172223A CN105835938B CN 105835938 B CN105835938 B CN 105835938B CN 201610172223 A CN201610172223 A CN 201610172223A CN 105835938 B CN105835938 B CN 105835938B
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- steering wheel
- steering
- bar
- turning
- block
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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
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0215—Determination of steering angle by measuring on the steering column
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a kind of structure-improveds of automatically controlled loader steering wheel, including steering wheel, turning-bar, steering rod shell, force feedback position-limit mechanism and angular displacement sensor；Rotatable be placed on of the turning-bar turns in rod shell, and one end of turning-bar and steering wheel are affixed, and middle part connects force feedback position-limit mechanism, and the other end is affixed with angular displacement sensor.Since the present invention is socketed force feedback position-limit mechanism on turning-bar, the force feedback position-limit mechanism is mainly made of inner support, block, bolt, the bolt being screwed on block two sides is set in the limit guide groove of inner support, the length of limit guide groove determines the maximum angle of wheel steering, so as to effectively control steering wheel steering locking angle degree, the input signal of angular displacement sensor is avoided beyond its allowed band, lead to loading machine steering disorder, the steering cylinder also avoided in loading machine generates moment oil shock, extends the service life of steering cylinder.
Description
Technical field
The present invention relates to a kind of engineering machinery, more particularly to a kind of structure-improved of automatically controlled loader steering wheel.
Background technique
The automatically controlled loader steering wheel commonly used, is generally detected by the angular displacement sensor being arranged on steering wheel
The turn signal is then fed back to system master controller, then passes through control by master controller by the angle signal of wheel steering
Relevant hydraulic valve block realizes the steering of loading machine, but uses this kind of scheme, on the one hand since angular displacement sensor does not have
Force feedback (i.e. the more big required operating force of steering wheel rotation angle is bigger) function, the input letter of another aspect angular displacement sensor
It number is intended in a certain range (such as ± 180 °), this range and the steering angle of loading machine are corresponding in proportion, when steering wheel turns
Dynamic angle can get muddled beyond the output signal of the range then angular displacement sensor, this just needs steering wheel to have limit function；
Therefore excessively light in steering wheel rotation for driver, especially driving new hand, there is no power sense, is unfavorable for steering wheel
Control, especially in the traffic events for encountering some bursts, when needing emergency turn, be easy wheel steering is excessive a, mistake
The steering angle of degree easily generates moment oil shock to the steering cylinder in loading machine, reduces the service life of steering cylinder；Two
Carrying out driver can not judge that the angle turned to easily causes traffic safety accident even if ovdersteering is also still unaware the short time.
Summary of the invention
The purpose of the present invention is to provide a kind of automatically controlled loader directions that steering wheel oversteering can be effectively controlled
The structure-improved of machine.
To achieve the above object, the technical solution of the invention is as follows:
The present invention is a kind of structure-improved of automatically controlled loader steering wheel, it includes steering wheel, turning-bar, turning-bar
Shell, force feedback position-limit mechanism and angular displacement sensor；Rotatable be placed on of the turning-bar turns in rod shell, turns to
One end of bar and steering wheel are affixed, and middle part connects force feedback position-limit mechanism, and the other end is affixed with angular displacement sensor；
The force feedback position-limit mechanism includes inner support, block, bolt and two springs；The inner support it is upper,
Lower end is respectively provided with a partition passed through for turning-bar, at least one side wall is equipped with a limit guide groove, and turning-bar above-mentioned is in place
Thread segment is equipped between the upper and lower partition of inner support, block is screwed onto the middle part on the thread segment of turning-bar and being located at inner support,
The upper and lower end of block closely abuts each other with two springs being nested on turning-bar respectively, two springs it is another
One end is born against on upper and lower partition, while being equipped with spiral shell relative to the side of the limit guide groove of inner support side wall in the block
Pit, the bolt-clearance are placed through in limit guide groove and are mounted in the threaded hole.
The turning-bar includes casing mounting base, hollow casing, turns to the body of rod, limited block, retaining ring, rolling bearing, pushes away
Power ball bearing；The lower end of the hollow casing is welded in casing mounting base；The middle and upper part of the steering body of rod passes through the axis of rolling
It holds and thrust ball bearing is rotatable is nested in hollow casing, lower section extends to outside hollow casing.
Further, the steering body of rod is connected and composed by upper joint body, hollow steel tube and the mutual welding of lower joint body, institute
The lower joint body stated is equipped with thread segment, is equipped with connecting hole in the bottom end face of lower joint body.
The door shape pedestal that the steering rod shell is made of both side plate and top plate, the middle and lower part of pedestal be equipped with one every
Plate is equipped with through-hole at the middle part of top plate and partition, and is equipped with several threaded holes for fixing inner support on both side plate and engraves
Empty portion, the partition are equipped with several threaded holes for being used to fix angular displacement sensor shell.
The block is equipped with longitudinal vertical cut face in the side for being located at limit guide groove, is equipped with screw thread in the longitudinal direction vertical cut face
Hole.
Limit guide groove is all equipped in the two side walls of the inner support, block is relative to all spiral shell on the two sides of limit guide groove
It is connected to the bolt for limit.
Further, the limit guide groove is slotted hole.
After adopting the above scheme, force feedback position-limit mechanism is socketed on turning-bar due to the present invention, force feedback limit
Mechanism is mainly made of inner support, block, bolt, and the bolt being screwed on block two sides is set in the limit guide groove of inner support
Interior, the length of limit guide groove determines the maximum angle of wheel steering, so as to effectively control steering wheel steering locking angle degree,
The input signal of angular displacement sensor is avoided beyond its allowed band, leads to loading machine steering disorder, also avoids loading machine
Interior steering cylinder generates moment oil shock, extends the service life of steering cylinder.
The present invention is further illustrated in the following with reference to the drawings and specific embodiments.
Detailed description of the invention
Fig. 1 is axonometric drawing of the invention；
Fig. 2 is front view of the invention；
Fig. 3 is stereogram exploded view of the invention；
Fig. 4 is the cross-sectional view of turning-bar of the present invention；
Fig. 5 is the front view that the present invention turns to the body of rod；
Fig. 6 is the axonometric drawing of block of the present invention；
Fig. 7 is the axonometric drawing of inner support of the present invention；
Fig. 8 is the axonometric drawing that the present invention turns to rod shell.
Specific embodiment
As shown in Figure 1-Figure 3, the present invention is a kind of structure-improved of automatically controlled loader steering wheel, including steering wheel 1,
Turning-bar 2 turns to rod shell 3, force feedback position-limit mechanism 4 and angular displacement sensor 5.
Rotatable be placed on of the turning-bar 2 turns in rod shell 3, and one end of turning-bar 2 and steering wheel 1 are affixed,
Middle part connects force feedback position-limit mechanism 4, and the other end and angular displacement sensor 5 are affixed.
As shown in Figure 3-Figure 5, the turning-bar 2 includes casing mounting base 21, hollow casing 22, turns to the body of rod 23, limit
Position block 24, retaining ring 25, rolling bearing 26, thrust ball bearing 27.The steering body of rod 23 is by upper joint body 231, hollow steel tube
232 and the mutual welding of lower joint body 233 connect and compose, the middle part of the lower joint body 233 is equipped with thread segment 2331, under connect
The bottom end face of head body 233 is equipped with connecting hole 2332, which is used to fix the rotor 51 of angular displacement sensor 5, should
The body of rod 23 is turned to using the butt welding process of three-stage, main purpose is convenient processing and manufacture, while reducing production cost；Turning-bar
The middle and upper part of body 23 is by rolling bearing 26 and thrust ball bearing 27 is rotatable is nested in hollow casing 22, and lower section is (main
If the thread segment 2331 of lower joint body 233) it extends to outside hollow casing 22, hollow casing 22 is welding with casing mounting base 21
Together, limited block 24 and the limit of retaining ring 25 are socketed in and turn on the body of rod 23 and be nested in casing mounting base 21, along axial direction
Positioning action is played to the body of rod 23 is turned to.
As shown in Figure 1, Figure 3, the force feedback position-limit mechanism 4 includes inner support 41, block 42(as shown in Figure 6), spiral shell
Bolt 43 and two springs 44.The upper and lower end of the inner support 41 be respectively provided with the upper spacer 411 that one passes through for turning-bar 23 and under
Partition 412(is as shown in Figure 7), the limit guide groove 413 of slotted hole (being in racetrack), steering above-mentioned are all equipped on two side wall
Bar 2 is equipped with thread segment 2331 between the upper spacer 411 and lower clapboard 412 for being located at inner support 41, and block 42 is screwed onto turning-bar 2
The middle part of inner support 41 is turned on the thread segment 2331 of the body of rod 23 and is located at, the upper and lower end of block 42 is being turned to being nested with respectively
Two springs 44 on bar 2 closely abut each other that the other end of two springs 44 is born against in 411 He of upper spacer
On lower clapboard 412, meanwhile, block 42 is equipped with longitudinal relative to the two sides of the limit guide groove 413 of the two side walls of inner support 41
Vertical cut face 421, is all bolted with the bolt 43 for limit on the longitudinal direction vertical cut face 421, and the setting in longitudinal vertical cut face 421 is convenient
Corresponding threaded hole 422 being opened up on block 42, while limit guide groove 413 is oval hole shape, bolt 43 is also cylindrical shape,
When limit, bolt 43 can be fitted on the circular boundary up and down of limit guide groove, it is ensured that two bolts 43 are placed through in gap respectively
In the limit guide groove 413 of the two side walls of inner support 41.
As shown in figure 8, the door shape pedestal that the steering rod shell 3 is made of both side plate 31 and top plate 32, pedestal
Middle and lower part be equipped with a partition 33, be all equipped with through-hole 321,331 at the middle part of top plate 32 and partition 33, and set on both side plate 31
There are several threaded holes 311 and hollow-out parts 312 for being used to fix inner support 41, inner support 41 is fixed on by above-mentioned threaded hole 311
In the both side plate 31 for turning to rod shell 3, while the hollow-out parts 312 of rectangle are opened up on side plate 31, one being light-weight design
Consideration demand, two come pass through the hollow-out parts 312 can very easily being placed through 43 gap of bolt on limit guide groove 413 simultaneously
It is locked on the threaded hole 422 on block 42, the partition 33 is equipped with several for fixing 5 shell of angular displacement sensor
Threaded hole 332.
The working principle of the invention:
As shown in Figure 1, Figure 3, the lock of steering wheel 1 is on the steering body of rod 23 of turning-bar 2, the casing mounting base 21 of turning-bar 2
It is bolted on the top plate 32 for turning to rod shell 3, the rotor 51 for turning to 23 bottom of the body of rod and angular displacement sensor 5 connects
It connects, and the shell of angular displacement sensor 5 is fixed on the lower part for turning to 3 partition 33 of rod shell, turns to the body of rod 23 and pass through with block 42
It is threadedly coupled, two 44 sets of springs are on turning-bar 2 and are separately mounted to the upper and lower position of block 42, block 42 and two springs 44 1
It rises and is fixed on inner support 41, inner support 41 is bolted with rod shell 3 is turned to.Steering wheel rotation 1 will drive turning-bar
Body 23 rotates, to drive the rotor 51 on angular displacement sensor 5 to rotate, to control the steering of loading machine.
The steering wheel rotation 1, which will drive, turns to the rotation of the body of rod 23, turns to the body of rod 23 and is connected through a screw thread with block 42,
When the steering body of rod 23 rotates clockwise, block 42 cannot turn together due to the limitation of two sides bolt 43 with the body of rod 23 is turned to
It is dynamic, it can only move along a straight line upwards along the thread segment 2331 for turning to the body of rod 23, on block 42 can squeeze during moving upwards
Portion's spring 44, with the increase of amount of compression, upper springs 44 can be bigger to the downward elastic force of block 42, at this moment steering wheel rotation 1
Operating force it is bigger；
Conversely, block 42 can move along a straight line downwards, keep off during moving downward when the steering body of rod 23 rotates counterclockwise
Block 42 can squeeze lower springs 44, and with the increase of amount of compression, spring 44 can be bigger to the upward elastic force of block 42, at this moment rotate
The operating force of steering wheel 1 is bigger；The force feedback function of operation steering wheel 1 is realized by this force variation of spring 44.
Bolt 43 passes through the limit guide groove 413 on 41 or so two boards of inner support and locks on block 42；When block 42 is upward
Or when moving downward, bolt 43 can move together with block 42, when bolt 43 encounters the up-and-down boundary of limit guide groove 413,
Block 42 cannot move up and down again, and at this moment steering wheel 1 cannot also have rotated, to realize limit function.
It should be understood that the distance (S) that block 42 and bolt 43 move up and down be by thread segment 2331 screw pitch (P) and
What the angle (A) of steering wheel rotation determined, the length (L) of limit guide groove 413 is the screw pitch (P) and steering wheel by thread segment 2331
Maximum rotational angle (Amax) determine, it is suitable in order to obtain in the case where steering wheel maximum rotation angle has determined
Limit guide groove length can be obtained by changing screw pitch (P)；It, can be by changing screw pitch in order to obtain suitable steering wheel operation power
(P) and the coefficient of elasticity of spring 44 (K) obtains, and change screw pitch (P) can pass through change 2331 diameter of thread segment (D) and screw thread
Tooth form is simultaneously modified according to national standard relevant regulations, and change spring constant (K) can be by changing the parameters such as spring material, line footpath
It is modified, by above-mentioned setting, to determine the screw pitch (P) of thread segment 2331 and the length (L) of limit guide groove 413, to obtain
Obtain suitable steering wheel operation force feedback function and required rotation angular region.
The above is only the preferred embodiment of the present invention, therefore cannot be limited the scope of implementation of the present invention with this, i.e., according to
Equivalent changes and modifications made by scope of the present invention patent and description should still belong to the model that the invention patent covers
In enclosing.
Claims (7)
1. a kind of structure-improved of automatically controlled loader steering wheel, it is characterised in that: it includes steering wheel, turning-bar, steering
Rod shell, force feedback position-limit mechanism and angular displacement sensor；Rotatable be placed on of the turning-bar turns in rod shell, turns
Affixed to one end of bar and steering wheel, middle part connects force feedback position-limit mechanism, and the other end is affixed with angular displacement sensor；
The force feedback position-limit mechanism includes inner support, block, bolt and two springs；The upper and lower end of the inner support
It is respectively provided with a partition passed through for turning-bar, at least one side wall is equipped with a limit guide groove, and turning-bar above-mentioned is within being located at
Thread segment is equipped between the upper and lower partition of bracket, block is screwed onto the middle part on the thread segment of turning-bar and being located at inner support, block
Upper and lower end closely abutted each other with two springs being nested on turning-bar respectively, the other end of two springs
It bears against on upper and lower partition, while being equipped with threaded hole relative to the side of the limit guide groove of inner support side wall in the block,
The bolt-clearance is placed through in limit guide groove and is mounted in the threaded hole.
2. the structure-improved of automatically controlled loader steering wheel according to claim 1, it is characterised in that: the steering
Bar includes casing mounting base, hollow casing, turns to the body of rod, limited block, retaining ring, rolling bearing, thrust ball bearing；The hollow casing
Lower end be welded in casing mounting base；The middle and upper part of the steering body of rod is rotatable by rolling bearing and thrust ball bearing
Be nested in hollow casing, lower section extends to outside hollow casing.
3. the structure-improved of automatically controlled loader steering wheel according to claim 2, it is characterised in that: the steering
The body of rod is connected and composed by upper joint body, hollow steel tube and the mutual welding of lower joint body, and the lower joint body is equipped with thread segment,
The bottom end face of lower joint body is equipped with connecting hole.
4. the structure-improved of automatically controlled loader steering wheel according to claim 1, it is characterised in that: the steering
The door shape pedestal that rod shell is made of both side plate and top plate, the middle and lower part of pedestal are equipped with a partition, in top plate and partition
Middle part is equipped with through-hole, and several threaded holes and hollow-out parts for being used to fix inner support are equipped on both side plate, and the partition is set
There are several for fixing the threaded hole of angular displacement sensor shell.
5. the structure-improved of automatically controlled loader steering wheel according to claim 1, it is characterised in that: the block
It is equipped with longitudinal vertical cut face in the side for being located at limit guide groove, is equipped with threaded hole in the longitudinal direction vertical cut face.
6. the structure-improved of automatically controlled loader steering wheel according to claim 1, it is characterised in that: the interior branch
Limit guide groove is all equipped in the two side walls of frame, block is all bolted with the spiral shell for limit on the two sides relative to limit guide groove
Bolt.
7. the structure-improved of automatically controlled loader steering wheel according to claim 6, it is characterised in that: the limit
Guide groove is slotted hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172223.5A CN105835938B (en) | 2016-03-24 | 2016-03-24 | The structure-improved of automatically controlled loader steering wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172223.5A CN105835938B (en) | 2016-03-24 | 2016-03-24 | The structure-improved of automatically controlled loader steering wheel |
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| Publication Number | Publication Date |
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| CN105835938A CN105835938A (en) | 2016-08-10 |
| CN105835938B true CN105835938B (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610172223.5A Active CN105835938B (en) | 2016-03-24 | 2016-03-24 | The structure-improved of automatically controlled loader steering wheel |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452245A (en) * | 2017-09-11 | 2017-12-08 | 深圳市前海智鼎科技有限公司 | A kind of simulator steering wheel of the adjustable limiting number of turns |
| CN109591884B (en) * | 2018-11-30 | 2021-08-13 | 上海亿博机电设备有限公司 | Electric control loader |
| CN111186477A (en) * | 2020-01-10 | 2020-05-22 | 清华大学 | Steer-by-wire stop device, steer-by-wire system and steer-by-wire motor vehicle |
| CN113306622B (en) * | 2021-05-07 | 2022-07-05 | 第一拖拉机股份有限公司 | Bidirectional large-angle self-resetting mechanism with neutral position positioning and stroke limiting functions |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018450A (en) * | 1983-07-08 | 1985-01-30 | Aisin Seiki Co Ltd | Telescopic steering device |
| GB2300395A (en) * | 1995-05-01 | 1996-11-06 | John Hugh Davey Walton | Electric servo system for vehicle power steering |
| JP2004182062A (en) * | 2002-12-03 | 2004-07-02 | Nissan Motor Co Ltd | Vehicular steering device |
| CN1883993A (en) * | 2005-06-22 | 2006-12-27 | 比亚迪股份有限公司 | Steering mechanism for vehicular drive-by-wire system and its steering drag simulator |
| CN201677915U (en) * | 2010-04-08 | 2010-12-22 | 奇瑞汽车股份有限公司 | Rotation limiting device for steering wheel of steer-by-wire system |
| KR20130096844A (en) * | 2012-02-23 | 2013-09-02 | 주식회사 만도 | Steering shaft of steering apparatus for vehicle |
| CN204124187U (en) * | 2014-10-20 | 2015-01-28 | 浙江诺力机械股份有限公司 | A kind of industrial vehicle differential type servo steering device |
| CN205440512U (en) * | 2016-03-24 | 2016-08-10 | 厦门厦工机械股份有限公司 | Automatically controlled improvement structure that turns to loader direction machine |
-
2016
- 2016-03-24 CN CN201610172223.5A patent/CN105835938B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018450A (en) * | 1983-07-08 | 1985-01-30 | Aisin Seiki Co Ltd | Telescopic steering device |
| GB2300395A (en) * | 1995-05-01 | 1996-11-06 | John Hugh Davey Walton | Electric servo system for vehicle power steering |
| JP2004182062A (en) * | 2002-12-03 | 2004-07-02 | Nissan Motor Co Ltd | Vehicular steering device |
| CN1883993A (en) * | 2005-06-22 | 2006-12-27 | 比亚迪股份有限公司 | Steering mechanism for vehicular drive-by-wire system and its steering drag simulator |
| CN201677915U (en) * | 2010-04-08 | 2010-12-22 | 奇瑞汽车股份有限公司 | Rotation limiting device for steering wheel of steer-by-wire system |
| KR20130096844A (en) * | 2012-02-23 | 2013-09-02 | 주식회사 만도 | Steering shaft of steering apparatus for vehicle |
| CN204124187U (en) * | 2014-10-20 | 2015-01-28 | 浙江诺力机械股份有限公司 | A kind of industrial vehicle differential type servo steering device |
| CN205440512U (en) * | 2016-03-24 | 2016-08-10 | 厦门厦工机械股份有限公司 | Automatically controlled improvement structure that turns to loader direction machine |
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| CN105835938A (en) | 2016-08-10 |
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