CN104074217A - Single-handle steering brake control system of bulldozer and bulldozer - Google Patents
Single-handle steering brake control system of bulldozer and bulldozer Download PDFInfo
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- CN104074217A CN104074217A CN201410175142.1A CN201410175142A CN104074217A CN 104074217 A CN104074217 A CN 104074217A CN 201410175142 A CN201410175142 A CN 201410175142A CN 104074217 A CN104074217 A CN 104074217A
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- bulldozer
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Abstract
The invention discloses a single-handle steering brake control system of a bulldozer and the bulldozer. A controller is connected with a cartridge valve group, the cartridge valve group is connected with a steering brake, wherein a Hall sensor is arranged below a rotating shaft of a mechanical steering handle and connected with the controller, one proportional pressure reducing valve is connected with a right steering clutch, one proportional pressure reducing valve is connected with a left steering clutch, one proportional pressure reducing valve is connected with a right brake clutch, one proportional pressure reducing valve is connected with a left brake clutch, and a switch valve is connected with the controller. The single-handle steering brake control system of the bulldozer is simple in structure and less in fault point; the mechanical steering handle is longer, so that the mechanical steering handle can turn by a large angle through regulating slowly and is not easy to be pushed to the end, and the impact to the system is reduced; because the controller can independently control each clutch, the clutches can be regulated according to the actual situation of the steering brake to achieve the smallest impact and fast reaction ability; when the controller breaks down, the bulldozer can be stopped through controlling the switch valve through mechanical locking so as to protect the whole system and bulldozer.
Description
Technical field
The present invention relates to a kind of control system, relate in particular to a kind of bulldozer monolever braking in a turn control system and bulldozer.
Background technology
The braking in a turn of existing bulldozer is controlled and is mainly adopted in two ways: the braking in a turn of (1) hand-control mechanical automatic control stick; (2) braking in a turn that electric-hydraulic proportion is controlled.
Patent No. CN200420056852 discloses a kind of soil shifter electro-hydraulic proportional control steering brake mechanism, and as shown in Figure 1, control circuit block diagram as shown in Figure 2 for its syndeton.Electric-hydraulic proportion driver consists of oil cylinder 2, two two-way proportional reducing valve 3, bypass valve 4, displacement transducer 5, control circuit board 6, electric hand handles 8, and is integrated on integrated package 7 by the mode such as integrated, forms one with integrated package.It is other that this electric-hydraulic proportion driver is arranged on the steering cluth control valve 1 of bulldozer, and concrete connection is that the piston rod of the oil cylinder that is fixedly mounted with on electric-hydraulic proportion driver is connected by articulated manner with the valve rod of steering cluth control valve.The two-way proportional reducing valve and the bypass valve that on electric-hydraulic proportion driver, are fixedly mounted with are all spiral cartridge valves, are inserted on integrated package 7, and two two-way proportional reducing valve are connected respectively and are arranged in parallel with two chambeies in oil cylinder, and communicate with oil cylinder by the inner oil duct of integrated package.
But there is following shortcoming in the structure that adopts above-mentioned telescopic arm: 1 whole mechanism comprises electric-control system, hydraulic system and frame for movement, complex structure, although be integrated on an integrated package, the component of containing are more, increased the trouble point of system; The complex manufacturing technology of 2 oil cylinders, requirement on machining accuracy is higher, and cost is high; 3 valve rods of steering cluth control valve and the piston rod of oil cylinder are hinged, and degree of freedom is higher, if but design or be processed with error and will cause between ball pivot gap less can cause the damage of cylinder piston rod or valve rod; The stroke of 4 electric handles is very little, and operating personnel are easy to move handle to the end, turn so little when curved operability low.
Summary of the invention
In view of this, the present invention proposes a kind of bulldozer monolever braking in a turn control system and bulldozer, and to solve said structure complexity, the cost of oil cylinder is high, and cylinder piston rod or valve rod are fragile turns to electric handle the problem that operability is low.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of bulldozer monolever braking in a turn control system, comprise mechanical steering handle, controller, cartridge valve group and steering brake, described controller connects described cartridge valve group, described cartridge valve group connects described steering brake, described steering brake comprises right turn clutch, left steering clutch, right brake coupling and left brake coupling, wherein, the rotating shaft below of described mechanical steering handle is provided with a Hall element, described Hall element is connected with described controller, described cartridge valve group is comprised of four proportional pressure relief electromagnetic valves and a switch valve, four described proportional pressure relief electromagnetic valves connect respectively described right turn clutch, described left steering clutch, described right brake coupling and described left brake coupling, described switch valve is connected with described controller, when described mechanical steering handle rotates, described Hall element can rotate thereupon, then output voltage signal be passed to described controller, described controller is processed voltage signal, then output current signal be passed to described cartridge valve group, four described proportional pressure relief electromagnetic valves are by the size adjustment output pressure value of current signal, and control respectively described right turn clutch, described left steering clutch, described right brake coupling and described left brake coupling.
Above-mentioned a kind of bulldozer monolever braking in a turn control system, wherein, described Hall element is connected with the rotating shaft of described mechanical steering handle by a U-shaped fork.
Above-mentioned a kind of bulldozer monolever braking in a turn control system, wherein, is provided with signal processing module in described controller, for the treatment of the voltage signal of described Hall element output.
Above-mentioned a kind of bulldozer monolever braking in a turn control system, wherein, described switch valve is connected by oil duct with four described proportional pressure relief electromagnetic valves.
Above-mentioned a kind of bulldozer monolever braking in a turn control system, wherein, described proportional pressure relief electromagnetic valve and described switch valve are dismountable to be plugged on a valve piece.
Also comprise a kind of bulldozer, comprise the bulldozer monolever braking in a turn control system described in above-mentioned any one.
The present invention is owing to having adopted above-mentioned technology, and the good effect of generation is:
System architecture of the present invention is simple, and trouble point is less; Mechanical steering handle of the present invention is relatively long, and slowly adjusting can realize large radius turn, is not easy to shift onto the end, reduces the impact to system; The present invention is because controller can be controlled respectively each clutch, thus can regulate according to the actual conditions of steering brake, to reach minimum impact, the fastest respond; When controller breaks down, can realize parking by mechanical caging gauge tap valve, whole control system and car load are played to the effect of a protection.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of soil shifter electro-hydraulic proportional control steering brake mechanism in prior art;
Fig. 2 is the control circuit block diagram of a kind of soil shifter electro-hydraulic proportional control steering brake mechanism in prior art;
Fig. 3 is the syndeton schematic diagram of mechanical steering handle and Hall element in a kind of bulldozer monolever braking in a turn control system of the present invention and bulldozer;
Fig. 4 is the control circuit block diagram of a kind of bulldozer monolever braking in a turn control system of the present invention and bulldozer.
Electric-hydraulic proportion driver consists of oil cylinder 2, two two-way proportional reducing valve 3, bypass valve 4, displacement transducer 5, control circuit board 6, electric hand handles 8, and is integrated on integrated package 7 by the mode such as integrated, forms one with integrated package.This electric-hydraulic proportion driver is arranged on steering cluth control valve 1 side of bulldozer,
1 steering cluth control valve, 2 oil cylinders, 3 two-way proportional reducing valve, 4 bypass valve, 5 displacement transducers, 6 control circuit boards, 7 integrated packages, 8 electric hand handles, 11 mechanical steering handles, 12 Hall elements, 13 controllers, 14 cartridge valve groups, 15 steering brakes, 16 proportional pressure relief electromagnetic valves, 17 switch valves, 18 right turn clutches, 19 left steering clutches, 20 right brake couplings, 21 left brake couplings, 22 valve pieces, 23U shape fork.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
Embodiment mono-
Shown in Fig. 3 and Fig. 4, a kind of bulldozer monolever braking in a turn control system of the present invention, comprise mechanical steering handle 11, controller 13, cartridge valve group 14 and steering brake 15, controller 13 connects cartridge valve group 14, cartridge valve group 14 connects steering brake 15, steering brake 15 comprises right turn clutch 18, left steering clutch 19, right brake coupling 20 and left brake coupling 21, wherein, the rotating shaft below of mechanical steering handle 11 is provided with a Hall element 12, Hall element 12 is connected with controller 13, cartridge valve group 14 is comprised of four proportional pressure relief electromagnetic valves 16 and a switch valve 17, four proportional pressure relief electromagnetic valves 16 connect respectively right turn clutch 18, left steering clutch 19, right brake coupling 20 and left brake coupling 21, switch valve 17 is connected with controller 13, when mechanical steering handle 11 rotates, Hall element 12 can rotate thereupon, then output voltage signal be passed to controller 13, 13 pairs of voltage signals of controller are processed, then output current signal be passed to cartridge valve group 14, four proportional pressure relief electromagnetic valves 16 are by the size adjustment output pressure value of current signal, and control respectively right turn clutch 18, left steering clutch 19, right brake coupling 20 and left brake coupling 21.
The present invention also has following embodiment on the basis of the above, please continue in conjunction with shown in Fig. 3 and Fig. 4,
In further embodiment of the present invention, Hall element 12 is connected with the rotating shaft of mechanical steering handle 11 by a U-shaped fork 23.
In further embodiment of the present invention, in controller 13, be provided with signal processing module, for the treatment of the voltage signal of Hall element 12 outputs.
In further embodiment of the present invention, switch valve 17 is connected by oil duct with four proportional pressure relief electromagnetic valves 16.
In further embodiment of the present invention, proportional pressure relief electromagnetic valve 16 and switch valve 17 are dismountable to be plugged on a valve piece 22.
User can further be familiar with characteristic of the present invention and function according to following explanation,
Operating principle of the present invention is: Hall element 12 is pitched 23 by U-shaped and is connected with the axle of mechanical steering handle 11, while pushing away so forward or backward mechanical steering handle 11, Hall element 12 also can rotate thereupon, and the output voltage of Hall element 12 changes.When 11 action of mechanical steering handle, be left steering or turn to again, Hall element 12 is passed to controller 13 by the voltage of output, the output voltage of 13 pairs of Hall elements 12 of controller judges, through further processing, export four road PWM current signals, control respectively four proportional pressure relief electromagnetic valves 16, four proportional pressure relief electromagnetic valves 16 carry out the force value of regulation output according to the size of input current, these four proportional pressure relief electromagnetic valves 16 respectively with the left steering clutch 19 of steering brake 15, left brake coupling 21, right turn clutch 18, right brake coupling 20 is connected, each clutch is controlled separately, can programme according to the different demands of each clutch, to reach the optimum state of this clutch.
In addition, during parking, give 13 1 switching signals of controller, controller 13 output Si road PWM current signal sizes are 0A, and now steering cluth 18,19 is thrown off, and brake coupling 20,21 combinations, realize parking; If this Time Controller 13 breaks down, for guaranteeing parking, give 17 1 signals of telecommunication of switch valve; make the logical oil of its energising; switch valve 17 is connected by oil duct with four proportional pressure relief electromagnetic valves 16, and when switch valve 17 is received parking signal, the oil circuit of switch valve 17 is opened; the pressure of four proportional pressure relief electromagnetic valves 16 is released; now steering brake 15 is interior without pressure, and steering cluth is thrown off, brake combination; realize parking, whole system and car load are played to the effect of a protection.
In embodiments of the invention, also comprise a kind of bulldozer, be provided with bulldozer monolever braking in a turn control system described above.Because above-mentioned bulldozer monolever braking in a turn control system has above-mentioned technique effect, therefore, the bulldozer that is provided with this bulldozer monolever braking in a turn control system also should possess corresponding technique effect, and its specific implementation process is similar to the above embodiments, does not hereby repeat.
Embodiment bis-
In the present embodiment, the basic structure of bulldozer monolever braking in a turn control system is identical with embodiment mono-, unique difference is the 12 use angular transducers of the Hall element in embodiment mono-to replace, when mechanical steering handle 11 rotates, the angle degree of coming calculating machine steering tiller 11 to rotate by angular transducer, angular transducer sends to controller 12 by the result of calculating, final realization and technique effect identical in embodiment mono-, because the specific embodiment is identical with embodiment mono-, be not repeated herein.
The foregoing is only preferred embodiment of the present invention; not thereby limit embodiments of the present invention and protection domain; to those skilled in the art; should recognize that being equal to that all utilizations manual of the present invention and diagramatic content done replace and the resulting scheme of apparent variation, all should be included in protection scope of the present invention.
Claims (6)
1. a bulldozer monolever braking in a turn control system, comprise mechanical steering handle (11), controller (13), cartridge valve group (14) and steering brake (15), described controller (13) connects described cartridge valve group (14), described cartridge valve group (14) connects described steering brake (15), described steering brake (15) comprises right turn clutch (18), left steering clutch (19), right brake coupling (20) and left brake coupling (21), it is characterized in that, the rotating shaft below of described mechanical steering handle (11) is provided with a Hall element (12), described Hall element (12) is connected with described controller (13), described cartridge valve group (14) is comprised of four proportional pressure relief electromagnetic valves (16) and a switch valve (17), four described proportional pressure relief electromagnetic valves (16) connect respectively described right turn clutch (18), described left steering clutch (19), described right brake coupling (20) and described left brake coupling (21), described switch valve (17) is connected with described controller (13), when described mechanical steering handle (11) rotates, described Hall element (12) can rotate thereupon, then output voltage signal be passed to described controller (13), described controller (13) is processed voltage signal, then output current signal be passed to described cartridge valve group (14), four described proportional pressure relief electromagnetic valves (16) are by the size adjustment output pressure value of current signal, and control respectively described right turn clutch (18), described left steering clutch (19), described right brake coupling (20) and described left brake coupling (21).
2. bulldozer monolever braking in a turn control system according to claim 1, is characterized in that, described Hall element (12) is connected with the rotating shaft of described mechanical steering handle (11) by a U-shaped fork (23).
3. bulldozer monolever braking in a turn control system according to claim 1, is characterized in that, described controller is provided with signal processing module in (13), for the treatment of the voltage signal of described Hall element (12) output.
4. bulldozer monolever braking in a turn control system according to claim 1, is characterized in that, described switch valve (17) is connected by oil duct with four described proportional pressure relief electromagnetic valves (16).
5. bulldozer monolever braking in a turn control system according to claim 1, is characterized in that, described proportional pressure relief electromagnetic valve (16) and described switch valve (17) are dismountable to be plugged on a valve piece (22).
6. a bulldozer, comprises the bulldozer monolever braking in a turn control system as described in any one in claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175142.1A CN104074217A (en) | 2014-04-28 | 2014-04-28 | Single-handle steering brake control system of bulldozer and bulldozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175142.1A CN104074217A (en) | 2014-04-28 | 2014-04-28 | Single-handle steering brake control system of bulldozer and bulldozer |
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| CN104074217A true CN104074217A (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410175142.1A Pending CN104074217A (en) | 2014-04-28 | 2014-04-28 | Single-handle steering brake control system of bulldozer and bulldozer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107038927A (en) * | 2017-05-27 | 2017-08-11 | 合肥磐石自动化科技有限公司 | A kind of aircraft flight attitude apparatus for demonstrating |
| CN108166560A (en) * | 2017-12-28 | 2018-06-15 | 山推工程机械股份有限公司 | A kind of bulldozer steering brake control method |
| CN111267804A (en) * | 2020-03-11 | 2020-06-12 | 上海擎度汽车科技有限公司 | Integrated control system of anti-lock braking system and electronic parking braking system |
| US10920396B1 (en) | 2019-07-31 | 2021-02-16 | Caterpillar Inc. | Hydraulic system for a motor grader |
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| US5814191A (en) * | 1996-06-20 | 1998-09-29 | Valmet Corp. | Arrangement and method for combining a dilution flow with a stock flow passed out of an inlet header in a paper/board machine |
| CN101612954A (en) * | 2009-07-23 | 2009-12-30 | 大连兴龙液压有限公司 | Steering brake valve for 520 horsepower bulldozer |
| CN101768991A (en) * | 2008-12-31 | 2010-07-07 | 卡特彼勒公司 | Turning operation system, turning operation method and working machine with the turning operation system |
| 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 |
| CN102826111A (en) * | 2012-09-17 | 2012-12-19 | 三一重通机械有限公司 | Bulldozer steering device and bulldozer |
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2014
- 2014-04-28 CN CN201410175142.1A patent/CN104074217A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5814191A (en) * | 1996-06-20 | 1998-09-29 | Valmet Corp. | Arrangement and method for combining a dilution flow with a stock flow passed out of an inlet header in a paper/board machine |
| CN101768991A (en) * | 2008-12-31 | 2010-07-07 | 卡特彼勒公司 | Turning operation system, turning operation method and working machine with the turning operation system |
| CN101612954A (en) * | 2009-07-23 | 2009-12-30 | 大连兴龙液压有限公司 | Steering brake valve for 520 horsepower bulldozer |
| 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 |
| CN102826111A (en) * | 2012-09-17 | 2012-12-19 | 三一重通机械有限公司 | Bulldozer steering device and bulldozer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107038927A (en) * | 2017-05-27 | 2017-08-11 | 合肥磐石自动化科技有限公司 | A kind of aircraft flight attitude apparatus for demonstrating |
| CN108166560A (en) * | 2017-12-28 | 2018-06-15 | 山推工程机械股份有限公司 | A kind of bulldozer steering brake control method |
| US10920396B1 (en) | 2019-07-31 | 2021-02-16 | Caterpillar Inc. | Hydraulic system for a motor grader |
| CN111267804A (en) * | 2020-03-11 | 2020-06-12 | 上海擎度汽车科技有限公司 | Integrated control system of anti-lock braking system and electronic parking braking system |
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Application publication date: 20141001 |