CN102826111A - Bulldozer steering device and bulldozer - Google Patents
Bulldozer steering device and bulldozer Download PDFInfo
- Publication number
- CN102826111A CN102826111A CN2012103430731A CN201210343073A CN102826111A CN 102826111 A CN102826111 A CN 102826111A CN 2012103430731 A CN2012103430731 A CN 2012103430731A CN 201210343073 A CN201210343073 A CN 201210343073A CN 102826111 A CN102826111 A CN 102826111A
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- steering
- bulldozer
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- proportional valve
- tiller
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- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Abstract
The invention discloses a bulldozer steering device and a bulldozer, belonging to the technical field of engineering machinery. The bulldozer comprises a steering handle, an electro-hydraulic proportional valve, a clutch, a hydraulic pump and a controller, wherein the steering handle and the electro-hydraulic proportional valve are connected with the controller respectively; and the clutch and the hydraulic pump are connected with the electro-hydraulic proportional valve respectively. In the invention, the steering handle transfers a signal to the controller, the controller sends a control signal to control the electro-hydraulic proportional valve to work, and then the proportional valve controls the clutch to work to realize the aim of steering; and therefore, the steering device is simple to operate and convenient to mount, and the signal control also improves the operation precision and the control sensitivity.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of bulldozer steering hardware and bulldozer.
Background technology
Bulldozer is the road machinery that dozer is equipped with in a kind of front, mainly is to accomplish shoveling, muck haulage separately and unload geotechnique's work, has flexible operation, rotates characteristics such as convenient, that required driving surface is little, moving velocity is fast.
It all is manual operation that existing bulldozer turns to control, through to the tension of control lever in operator's compartment operation, separates turning to inboard cutting brake, and the steering clutch that has separated with the drg cadence braking, to control the size of Turning radius.In order to alleviate manipulation strength, electric handle can be installed in operator's compartment, through the electric handle effect,, can realize continuously than row control the valve rod of power-transfer clutch through the control of electric liquor ratio row driver.The steepness that bulldozer turns to is relevant with the tension dynamics with the braking time of drg, and when two side brakes are all realized glancing impact, bulldozer is just realized braking and stopped.
But also there is following problem in prior art, and the manual mode operation man's activity is bigger, and operation easier is big; The comparatively complicated high requirement that is difficult to guarantee precision of operating structure is for design, manufacturing, assembling all bring difficulty; The operation control accuracy is lower, and mechanical life is shorter.
Summary of the invention
Present present bulldozer steering hardware manual mode operation man's activity is big in order to solve, operating difficulties and operating structure complicacy cause designing, assembling difficulty and the lower problem of operation control accuracy, and a kind of bulldozer steering hardware is provided at present.Concrete technical scheme is following:
A kind of bulldozer steering hardware; Comprise steering tiller, electro-hydraulic proportional valve, power-transfer clutch and Hydraulic Pump; Wherein, Also include controller, said steering tiller is connected with said controller respectively with said electro-hydraulic proportional valve, and said power-transfer clutch is connected with said electro-hydraulic proportional valve respectively with said Hydraulic Pump.
Preferably; Said electro-hydraulic proportional valve and said power-transfer clutch have four respectively; Said electro-hydraulic proportional valve comprises two brake activation valves and two convertible valves; Said power-transfer clutch comprises two steering clutchs and two brake couplings, and said brake activation valve is connected with said brake coupling, and said convertible valve is connected with said steering clutch.
Preferably, said steering tiller has two, and said steering tiller is unidirectional stroke and has the two-stage actuating force.
Preferably, said steering tiller is a handle that has two-way travel and have the two-stage actuating force.
Preferably, said steering tiller is a single shaft finger tip rocker lever.
Preferably, the sensor that is used to detect said steering tiller pendulum angle signal is installed in the said steering tiller, said sensor is connected with said controller.
Preferably, said sensor is a hall sensor.
A kind of bulldozer, said bulldozer are equipped with above-mentioned each described bulldozer steering hardware.
Compared with prior art; The bulldozer steering hardware that technique scheme provides has the following advantages: transmit signal through steering tiller and give controller; Controller sends the work of control signal control electro-hydraulic proportional valve, and the work of proportional valve control power-transfer clutch reaches the purpose that turns to then, makes this steering hardware not only simple to operate; Easy for installation, and signal control has also improved performance accuracy and control sensitivity.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the bulldozer steering hardware connection structure scheme drawing that provides in the embodiment of the invention;
Fig. 2 is the bulldozer steering hardware control flow block diagram that provides in the embodiment of the invention.
In the accompanying drawing, the component list of each label representative is following:
1 Hydraulic Pump, 2 electro-hydraulic proportional valves, 21 left brake activation valves, 22 left steering valves, 23 right brake activation valves; 24 right steering valves, 3 controllers, 4 steering tillers, 41 left steering handles, 42 right steering handles; 5 power-transfer clutchs, 51 left brake couplings, 52 left steering power-transfer clutchs, 53 right brake couplings, 54 right steering power-transfer clutchs.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
As shown in Figure 1; The embodiment of the invention provides a kind of bulldozer steering hardware; Comprise steering tiller 4, electro-hydraulic proportional valve 2, power-transfer clutch 5, Hydraulic Pump 1 and controller 3; Steering tiller 4 is connected with controller 3 respectively with electro-hydraulic proportional valve 2, and power-transfer clutch 5 is connected with electro-hydraulic proportional valve 2 respectively with Hydraulic Pump 1.Wherein steering tiller 4 is installed to make things convenient for hand shift for being that two left and right sides steering tillers (41,42) are arranged side by side; Left and right sides steering tiller (41,42) is connected with controller 3 respectively; Controller 3 is connected with four electro-hydraulic proportional valves 2; Power-transfer clutch 5 has four; About electro-hydraulic proportional valve 2 comprises two brake activation valves (21,23) and about two convertible valves (22,24); About power-transfer clutch 5 comprises two steering clutchs (52,54) and about two brake couplings (51,53), left and right sides brake activation valve (21,23) is connected respectively with left and right sides brake coupling (51,53), left and right sides convertible valve (22,24) is connected respectively with left and right sides steering clutch (52,54).Steering tiller 4 is a single shaft finger tip rocker lever, has unidirectional stroke, finger-tip operated and has the two-stage actuating force, in the steering tiller 4 hall sensor is installed, and hall sensor is connected with controller 3.Operating handle 4 is placed on the position of chaufeur left arm when placing naturally.At work; Bar handle 4 sends and the proportional electric signal of angle according to the size of handle pendulum angle; With signal capture and send controller 3 to, controller 3 is accepted this signal go forward side by side row operation, amplification and logic determines by sensor, thereby controls the pressure signal of different electro-hydraulic proportional valves 2; Again through the corresponding deflector of proportional valve control, brake cylinder, thereby turn to about realizing.When machine run, the skid steer handle will be controlled the size of left and right sides convertible valve and brake activation valve pressure.
As shown in Figure 2, bulldozer steering hardware workflow is following, when straight-line travelling, about two steering clutchs (52,54) be in complete bonding state, transmission system is the drive wheel transmitting torque of both sides to the left and right equably; When a side turns to, the steering clutch of this side is thoroughly separated, promptly cut off the transmission of power of this side, the propulsive effort that makes this side is zero, machinery will turn to along bigger radius.If the steering clutch of a side is separated, simultaneously this side brake is braked, drive wheel is not rotated, machinery will turn to less radius, even is that pivot stud is made in the center of circle with the ground connection center of the crawler belt of a side.And preceding half section of steering tiller is control ratio of turning valve (22,24), and its pressure is changed from big to small, reduces gradually so that cut off the drive torque of a side drive wheel, the propulsive effort that crawler belt produced of this side reduced gradually, until equalling zero.The second half section control run is control brake valve (21,23); Its pressure is changed from big to small, and (this moment, convertible valve cut off the power supply; Flow and pressure are zero); To the drive wheel brake activation, check gradually, make this side crawler belt not only not have propulsive effort but also the generation braking force opposite with the bulldozer travel direction until completion.When wherein left steering is operated, cooresponding left steering valve 22 of controller 3 controls and left brake activation valve 21; During the right steering operation, cooresponding right steering valve 23 of controller 3 controls and right brake activation valve 23.
On the other hand, the steering tiller in the embodiment of the invention also can have two-way travel and have the handle of two-stage actuating force or handle that other form has identical function replaces left and right sides steering tiller for one, and the present invention does not do qualification at this.
The embodiment of the invention also discloses a kind of bulldozer, this bulldozer is equipped with above-mentioned bulldozer steering hardware, and other parts of bulldozer can be with reference to prior art, does not do at this and gives unnecessary details.
Disclosed bulldozer steering hardware of the embodiment of the invention and bulldozer through two single shaft finger tip rocker levers arranged side by side control bulldozer about turn to, single shaft finger tip rocker lever is simple to operate, and is easy for installation; In addition; All connections are and flexibly connect the layout design that makes operator's compartment and become very simple; Two finger-tip operated handles arranged side by side simultaneously, the little very ergonomic of actuating force has not only been eliminated personal errors such as the design error that brought in the traditional mechanical transmission, manufacturing errors, assembly error; Also can eliminate fully because the control dead area that the connecting rod gap is caused has improved control accuracy and control sensitivity.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. bulldozer steering hardware; Comprise steering tiller, electro-hydraulic proportional valve, power-transfer clutch and Hydraulic Pump; It is characterized in that; Also include controller, said steering tiller is connected with said controller respectively with said electro-hydraulic proportional valve, and said power-transfer clutch is connected with said electro-hydraulic proportional valve respectively with said Hydraulic Pump.
2. bulldozer steering hardware according to claim 1; It is characterized in that; Said electro-hydraulic proportional valve and said power-transfer clutch have four respectively, and said electro-hydraulic proportional valve comprises two brake activation valves and two convertible valves, and said power-transfer clutch comprises two steering clutchs and two brake couplings; Said brake activation valve is connected with said brake coupling, and said convertible valve is connected with said steering clutch.
3. bulldozer steering hardware according to claim 2 is characterized in that, said steering tiller has two, and said steering tiller is unidirectional stroke and has the two-stage actuating force.
4. bulldozer steering hardware according to claim 2 is characterized in that, said steering tiller is a handle that has two-way travel and have the two-stage actuating force.
5. according to claim 3 or 4 described bulldozer steering hardwares, it is characterized in that said steering tiller is a single shaft finger tip rocker lever.
6. bulldozer steering hardware according to claim 5 is characterized in that, the sensor that is used to detect said steering tiller pendulum angle signal is installed in the said steering tiller, and said sensor is connected with said controller.
7. bulldozer steering hardware according to claim 5 is characterized in that, said sensor is a hall sensor.
8. a bulldozer is characterized in that, said bulldozer is equipped with each described bulldozer steering hardware of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103430731A CN102826111A (en) | 2012-09-17 | 2012-09-17 | Bulldozer steering device and bulldozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103430731A CN102826111A (en) | 2012-09-17 | 2012-09-17 | Bulldozer steering device and bulldozer |
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| Publication Number | Publication Date |
|---|---|
| CN102826111A true CN102826111A (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103430731A Pending CN102826111A (en) | 2012-09-17 | 2012-09-17 | Bulldozer steering device and bulldozer |
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| CN (1) | CN102826111A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074217A (en) * | 2014-04-28 | 2014-10-01 | 三一重通机械有限公司 | Single-handle steering brake control system of bulldozer and bulldozer |
| CN104748983A (en) * | 2015-04-09 | 2015-07-01 | 句容五星机械制造有限公司 | Bulldozer steering fault detection method |
| CN105370638A (en) * | 2015-12-07 | 2016-03-02 | 苏州广硕精密电子有限公司 | Steering hydraulic system of bulldozer |
| CN105864015A (en) * | 2016-05-30 | 2016-08-17 | 无锡市钻通工程机械有限公司 | Closed type electric control pump system jointly controlled with potentiometer and handles |
| CN111155579A (en) * | 2020-01-16 | 2020-05-15 | 山推工程机械股份有限公司 | Foldable dozer blade, control system and bull-dozer |
| CN111497934A (en) * | 2020-04-24 | 2020-08-07 | 山推工程机械股份有限公司 | Steering brake system and steering brake control method |
| CN113062378A (en) * | 2021-03-25 | 2021-07-02 | 山推工程机械股份有限公司 | Self-adaptive control method and system for bulldozer active safety and brake pressure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2427556Y (en) * | 2000-06-21 | 2001-04-25 | 三一重工业集团有限公司 | Steering, hydraulic braking operation device for bulldozer |
| JP4567036B2 (en) * | 2007-08-20 | 2010-10-20 | 株式会社小松製作所 | Steering control device for tracked vehicle |
| CN202345753U (en) * | 2011-10-08 | 2012-07-25 | 河北宣化工程机械股份有限公司 | Bulldozer steering and braking control system |
-
2012
- 2012-09-17 CN CN2012103430731A patent/CN102826111A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2427556Y (en) * | 2000-06-21 | 2001-04-25 | 三一重工业集团有限公司 | Steering, hydraulic braking operation device for bulldozer |
| JP4567036B2 (en) * | 2007-08-20 | 2010-10-20 | 株式会社小松製作所 | Steering control device for tracked vehicle |
| CN202345753U (en) * | 2011-10-08 | 2012-07-25 | 河北宣化工程机械股份有限公司 | Bulldozer steering and braking control system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074217A (en) * | 2014-04-28 | 2014-10-01 | 三一重通机械有限公司 | Single-handle steering brake control system of bulldozer and bulldozer |
| CN104748983A (en) * | 2015-04-09 | 2015-07-01 | 句容五星机械制造有限公司 | Bulldozer steering fault detection method |
| CN105370638A (en) * | 2015-12-07 | 2016-03-02 | 苏州广硕精密电子有限公司 | Steering hydraulic system of bulldozer |
| CN105864015A (en) * | 2016-05-30 | 2016-08-17 | 无锡市钻通工程机械有限公司 | Closed type electric control pump system jointly controlled with potentiometer and handles |
| CN111155579A (en) * | 2020-01-16 | 2020-05-15 | 山推工程机械股份有限公司 | Foldable dozer blade, control system and bull-dozer |
| CN111497934A (en) * | 2020-04-24 | 2020-08-07 | 山推工程机械股份有限公司 | Steering brake system and steering brake control method |
| CN113062378A (en) * | 2021-03-25 | 2021-07-02 | 山推工程机械股份有限公司 | Self-adaptive control method and system for bulldozer active safety and brake pressure |
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Application publication date: 20121219 |