CN104454749A - Hydraulic stair control integrated system of large electric-wheel dump truck - Google Patents
Hydraulic stair control integrated system of large electric-wheel dump truck Download PDFInfo
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- CN104454749A CN104454749A CN201410754626.1A CN201410754626A CN104454749A CN 104454749 A CN104454749 A CN 104454749A CN 201410754626 A CN201410754626 A CN 201410754626A CN 104454749 A CN104454749 A CN 104454749A
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- Prior art keywords
- stair
- valve
- control
- oil cylinder
- manifold block
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B2013/0409—Position sensing or feedback of the valve member
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A hydraulic stair control integrated system of a large electric-wheel dump truck comprises a pressure oil source, an oil tank, a manual control valve, a stair control cylinder and a stair control integrated valve assembly with a plurality of cartridge valves. A pressure oil source is connected with an oil inlet of the stair control integrated valve assembly. The hydraulic stair control integrated system is high in operation reliability, simple to manufacture and low in using cost and is integrated specially by standard and universal hydraulic components; the hydraulic stair control integrated system with the components integrally arranged is high in integration degree, small in occupation space, few in pipelines and convenient to maintain. The hydraulic stair control integrated system is simple to operate, rich in functions, high in automatic control degree, complete in action interlocking relation, high in safety and applicable to folding and unfolding control of the stair for getting in or out of large coal mine dump trucks.
Description
Technical field
The present invention relates to a kind of stair hydraulic control integrated system, especially relate to a kind of Large Electric wheel self-discharging vehicle stair hydraulic control integrated system.
Background technique
At present, Large Electric wheel self-discharging vehicle more and more applies to the exploitation work of large surface mine, and the configuration of vehicle also more and more hommization.The stair of the upper and lower vehicle of past driver are all hanging ladder, because vehicle chassis is very high, hanging ladder is rope ladder, can not fix, upper and lower vehicle is more difficult, and this hanging ladder ratio is easier to be broken by ore, thus the dumping car produced of many famous foreign producer later stages be all equipped with can the hydraulic control stair of folding and unfolding.Due to the restriction by mine conditions and factor of safety, higher to the control overflow of stair; The control mode of stair is a lot, has the automatically controlled hydraulic control that also has.The high advantage with being easy to operate of Security due to hydraulic control, thus uses more.And the hydraulic pressure stair control system of external manufacturer production adopts discrete component form mostly, have that element is many, connecting pipeline is many, complex structure, a defect such as take up room large, functional reliability is low, maintenance trouble, manufacture cost height; Stair hydraulic control system as the dumping car of little Song Dierser company production is like this.
Along with the development of domestic quarry tipper industry, the stair hydraulic control integrated system with integrating control feature developing new advanced person has more and more important meaning.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the above-mentioned difference that prior art exists, provides a kind of functional reliability high, easy to maintenance, the Large Electric wheel self-discharging vehicle stair hydraulic control integrated system of low cost of manufacture.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Large Electric wheel self-discharging vehicle stair hydraulic control integrated system, comprise pressure oil-source, fuel tank, stair control oil cylinder, hand stop valve, the second one-way valve, it is characterized in that, also comprise the stair control integration valve group being provided with multiple cartridge valve, be connected with stair control integration valve group as the pressure oil-source controlling power source.
Further, described stair control integration valve group comprises overflow reduction valve, solenoid valve, the first Pilot operated check valve, the second Pilot operated check valve, the first relief valve, the second relief valve, the first one-way throttle valve, the second one-way throttle valve and the first one-way valve; Overflow reduction valve, solenoid valve, the first Pilot operated check valve, the second Pilot operated check valve, the first relief valve, the second relief valve, the first one-way throttle valve, the second one-way throttle valve and the first one-way valve are all plugged on manifold block.
Further, described pressure oil-source connects the filler opening of manifold block, and manifold block is provided with two return openings: the first return opening and the second return opening; First return opening of manifold block and the equal connected tank of the second return opening, external second one-way valve of the second return opening of manifold block and hand stop valve; Manifold block is provided with four actuator ports: stair control oil cylinder rising control mouth, stair control oil cylinder declines controls mouth, stair control oil cylinder manual-operated emergent decline control first controls mouth, stair control oil cylinder manual-operated emergent decline second controls mouth, wherein, the stair of manifold block control oil cylinder rising and control the rodless cavity that mouth connects stair control oil cylinder; The stair of manifold block control oil cylinder decline and control the rod chamber that mouth connects stair control oil cylinder; The stair of manifold block control oil cylinder manual-operated emergent decline first control mouth and connect hand stop valve; The stair of manifold block control oil cylinder manual-operated emergent decline second control mouth and connect the second one-way valve.
Further, described manifold block is provided with three pressure tap: the first pressure tap, the second pressure tap and the 3rd pressure tap, and wherein, the first pressure tap is located between overflow reduction valve and solenoid valve; Second pressure tap is located at the second relief valve and stair control between oil cylinder; 3rd pressure tap is located at the first relief valve and stair control between oil cylinder.
Further, the filler opening of described manifold block controls oil cylinder through the stair that overflow reduction valve, solenoid valve, the first Pilot operated check valve, the first one-way throttle valve are connected to manifold block and declines and control mouth and stair and control oil cylinder manual-operated emergent and decline and second control mouth, and the filler opening of manifold block controls oil cylinder through the stair that overflow reduction valve, solenoid valve, the second Pilot operated check valve, the second one-way throttle valve are connected to manifold block and rises and control mouth and stair and control oil cylinder manual-operated emergent and decline and first control mouth, first return opening of manifold block and the second return opening are through overflow reduction valve, solenoid valve, first Pilot operated check valve, the stair control oil cylinder decline that first one-way throttle valve is connected to manifold block controls mouth and stair control oil cylinder manual-operated emergent decline second control mouth, first return opening of manifold block and the second return opening are through overflow reduction valve, solenoid valve, second Pilot operated check valve, the stair control oil cylinder rising that second one-way throttle valve is connected to manifold block controls mouth and stair control oil cylinder manual-operated emergent decline first control mouth, the stair control oil cylinder decline that first hydraulic fluid port of manifold block and the second return opening are connected to manifold block through the first relief valve controls mouth and stair control oil cylinder manual-operated emergent decline second control mouth, the stair control oil cylinder rising that first hydraulic fluid port of manifold block and the second return opening are connected to manifold block through the second relief valve and the first one-way valve controls mouth and stair control oil cylinder manual-operated emergent decline first control mouth, second relief valve and the parallel connection of the first one-way valve.
Functional reliability of the present invention is high, and manufacture simple, user cost is low, the integrated special stair hydraulic control integrated system of hydraulic element that selection standard is general, element centralized arrangement, and degree of integration is high, and take up room little, pipeline is few, is convenient to maintenance; Simple to operate, powerful, automatic controlling level is high, and action interlock connection is perfect, and Safety performance is high, and the folding and unfolding being applicable to the stair of the vehicle up and down of large-scale mine dumping car equipment controls.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of stair control integration valve group of the present invention;
Fig. 2 is the schematic diagram of Large Electric wheel self-discharging vehicle stair hydraulic control integrated system of the present invention;
Fig. 3 (a) is the plan view of the control integration of stair shown in Fig. 1 valve group;
Fig. 3 (b) is the plan view of the control integration of stair shown in Fig. 1 valve group;
Fig. 3 (c) is the right elevation of the control integration of stair shown in Fig. 1 valve group;
Fig. 3 (d) is the left view of the control integration of stair shown in Fig. 1 valve group;
In figure: 1, overflow reduction valve; 2, solenoid valve; 3.1, the first relief valve; 3.2, the second relief valve; 4.1 first Pilot operated check valves; 4.2, the second Pilot operated check valve; 5.1, the first one-way throttle valve; 5.2, the second one-way throttle valve; 6.1, the first one-way valve; 6.2, the second one-way valve; 7, manifold block; 8, hand stop valve; 9, stair control oil cylinder; 9-1, stair control the rod chamber of oil cylinder; 9-2, stair control the rodless cavity of oil cylinder; 10, fuel tank; P, pressure oil-source; The filler opening of P1, manifold block; First return opening of T, manifold block; Second return opening of T1, manifold block; A, stair control oil cylinder rising and control mouth; B stair control oil cylinder decline and control mouth; A1, stair control oil cylinder manual-operated emergent decline first and control mouth; B1 stair control oil cylinder manual-operated emergent decline second and control mouth; M1, the first pressure tap; M2, the second pressure tap; M3 the 3rd pressure tap.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
With reference to Fig. 1, Fig. 2, a kind of Large Electric wheel self-discharging vehicle stair hydraulic control integrated system, comprise pressure oil-source P, fuel tank 10, stair control oil cylinder 9, hand stop valve 8, second one-way valve 6.2, also comprise the stair control integration valve group being provided with multiple cartridge valve, be connected with stair control integration valve group as the pressure oil-source P controlling power source.
With reference to Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) and Fig. 3 (d), described stair control integration valve group comprises overflow reduction valve 1, solenoid valve 2, first Pilot operated check valve 4.1, second Pilot operated check valve 4.2, first relief valve 3.1, second relief valve 3.2, first one-way throttle valve 5.1, second one-way throttle valve 5.2 and the first one-way valve 6.1; Overflow reduction valve 1, solenoid valve 2, first Pilot operated check valve 4.1, second Pilot operated check valve 4.2, first relief valve 3.1, second relief valve 3.2, first one-way throttle valve 5.1, second one-way throttle valve 5.2 and the first one-way valve 6.1 are all plugged on manifold block 7.
Connect the oil inlet P 1 of manifold block 7 with reference to Fig. 2, pressure oil-source P, manifold block 7 is provided with two return openings: the first oil return inlet T and the second oil return inlet T 1; First oil return inlet T of manifold block 7 and the second oil return inlet T 1 all connected tanks 10, external second one-way valve 6.2 of second oil return inlet T 1 of manifold block 7 and hand stop valve 8, manifold block 7 is provided with four actuator ports: the rising of stair control oil cylinder controls mouth A, stair control oil cylinder decline control mouth B, stair control oil cylinder manual-operated emergent declines the first control mouth A1, stair control oil cylinder manual-operated emergent decline second control mouth B1, wherein, the stair of manifold block 7 control oil cylinder rising and control the rodless cavity 9-2 that mouth A connects stair control oil cylinder 9; The stair of manifold block 7 control oil cylinder decline and control the rod chamber 9-1 that mouth B connects stair control oil cylinder 9; The stair of manifold block 7 control oil cylinder manual-operated emergent decline first control mouth A1 and connect hand stop valve 8; The stair of manifold block 7 control oil cylinder manual-operated emergent decline second control mouth B1 and connect the second one-way valve 6.2.
Manifold block 7 is provided with three pressure tap: the first pressure tap M1, the second pressure tap M2 and the 3rd pressure tap M3, and wherein, the first pressure tap M1 is located between overflow reduction valve 1 and solenoid valve 2; Second pressure tap M2 is located at the second relief valve 3.2 and stair control between oil cylinder 9; 3rd pressure tap M3 is located at the first relief valve 3.1 and stair control between oil cylinder 9.
The oil inlet P 1 of manifold block 7 controls oil cylinder through the stair that overflow reduction valve 1, solenoid valve 2, first Pilot operated check valve 4.1, first one-way throttle valve 5.1 are connected to manifold block 7 and declines and control mouth B and stair and control oil cylinder manual-operated emergent and decline and second control mouth B1, and the oil inlet P 1 of manifold block 7 controls oil cylinder through the stair that overflow reduction valve 1, solenoid valve 2, second Pilot operated check valve 4.2, second one-way throttle valve 5.2 are connected to manifold block 7 and rises and control mouth A and stair and control oil cylinder manual-operated emergent and decline and first control mouth A1; first oil return inlet T of manifold block 7 and the second oil return inlet T 1 are through overflow reduction valve 1, solenoid valve 2, first Pilot operated check valve 4.1, the stair control oil cylinder decline that first one-way throttle valve 5.1 is connected to manifold block 7 controls mouth B and stair control oil cylinder manual-operated emergent decline second control mouth B1, first oil return inlet T of manifold block 7 and the second oil return inlet T 1 are through overflow reduction valve 1, solenoid valve 2, second Pilot operated check valve 4.2, the stair control oil cylinder rising that second one-way throttle valve 5.2 is connected to manifold block 7 controls mouth A and stair control oil cylinder manual-operated emergent decline first control mouth A1, the stair control oil cylinder decline that first oil return inlet T of manifold block 7 and the second oil return inlet T 1 are connected to manifold block 7 through the first relief valve 3.1 controls mouth B and stair control oil cylinder manual-operated emergent decline second control mouth B1, the stair control oil cylinder rising that first oil return inlet T of manifold block 7 and the second oil return inlet T 1 are connected to manifold block 7 through the second relief valve 3.2 and the first one-way valve 6.1 controls mouth A and stair control oil cylinder manual-operated emergent decline first control mouth A1, second relief valve 3.2 and the parallel connection of the first one-way valve 6.1.
Working principle: Large Electric wheel self-discharging vehicle stair hydraulic control integrated system, its stair controlling functions comprises: stair are packed up, stair put down, stop in stair, manual-operated emergent puts down four actions and stair Overload Protection function.
Stair are packed up: when the right side electromagnet of solenoid valve 2 obtains electric, the right position of solenoid valve 2 enters work, now, the pressure oil at pressure oil-source P place flows into overflow reduction valve 1 through manifold block 7 oil inlet P 1, stair again through solenoid valve 2, second Pilot operated check valve 4.2, second one-way throttle valve 5.2, manifold block 7 control the rodless cavity 9-2 that oil cylinder rising controls mouth A inflow stair control oil cylinder 9, the piston rod that stair control oil cylinder 9 stretches out, and realizes packing up of stair.
Stair put down: when the left side electromagnet of solenoid valve 2 obtains electric, the left position of solenoid valve 2 enters work, now, the pressure oil at pressure oil-source P place controls oil cylinder through manifold block 7 oil inlet P 1 through the stair that overflow reduction valve 1, solenoid valve 2, first Pilot operated check valve 4.1, first one-way throttle valve 5.1 flow to manifold block 7 and declines and control mouth B, final inflow stair control the rod chamber 9-1 of oil cylinder 9, stair control the piston rod retraction of oil cylinder 9, realize putting down of stair, staff is undertaken by the stair put down up and down.
Stop in stair: when solenoid valve 2 completely must not be electric, the meta of solenoid valve 2 enters work; The rod chamber 9-1 controlling oil cylinder 9 due to stair through the stair of manifold block 7 control oil cylinder decline control mouth B, the first one-way throttle valve 5.1, first Pilot operated check valve 4.1, solenoid valve 2, overflow reduction valve 1, first oil return inlet T be connected with fuel tank 10 with the second oil return inlet T 1; The rodless cavity 9-2 controlling oil cylinder 9 due to stair through the stair of manifold block 7 control oil cylinder rise control mouth A, the first one-way throttle valve 5.2, second Pilot operated check valve 4.2, solenoid valve 2, overflow reduction valve 1, first oil return inlet T be connected with fuel tank 10 with the second oil return inlet T 1; Hydraulic oil in the rod chamber 9-1 of stair control oil cylinder 9 and rodless cavity 9-2 is pinned by the first Pilot operated check valve 4.1 and the second Pilot operated check valve 4.2 respectively, and the piston rod that stair control oil cylinder 9 is motionless, realizes stopping in stair.
Manual-operated emergent puts down: when chance fortuitous event, during solenoid valve 2 cisco unity malfunction, hand stop valve 8 is opened, stair control the stair control oil cylinder rising control mouth A of the hydraulic oil in the rodless cavity 9-2 of oil cylinder 9 through manifold block 7, stair control oil cylinder manual-operated emergent decline first and control mouth A1, hand stop valve 8, second oil return inlet T 1 of manifold block 7 and the first oil return inlet T flow back to fuel tank 10, the rod chamber 9-1 that stair control oil cylinder 9 then controls oil cylinder decline control mouth B through the stair of manifold block 7, stair control oil cylinder manual-operated emergent decline second and control mouth B1, second one-way valve 6.2, second oil return inlet T 1 and the first oil return inlet T of manifold block 7, fluid is supplemented from fuel tank 10 oil suction, stair are made to control piston rod retraction under the effect of stair gravity of oil cylinder 9, thus realize putting down of stair.
Stair Overload Protection function: when generation overload in process packed up by the stair that stair control oil cylinder 9 control, the high pressure liquid force feed that the rodless cavity 9-2 that stair control oil cylinder 9 produces through the second relief valve 3.2, second oil return inlet T 1 of manifold block 7 and the first oil return inlet T overflow to fuel tank 10, thus can realize the overload protection of stair in the process of packing up; Equally; when the stair that stair control oil cylinder 9 control put down generation overload in process; the high pressure liquid force feed that the rod chamber 9-1 that stair control oil cylinder 9 produces can through the first relief valve 3.1, first oil return inlet T 1 of manifold block 7 and the second oil return inlet T 2 overflow to fuel tank 10, thus realize putting down the overload protection in process to stair.
Claims (5)
1. a Large Electric wheel self-discharging vehicle stair hydraulic control integrated system, comprise pressure oil-source P, fuel tank (10), stair control oil cylinder (9), hand stop valve (8), the second one-way valve (6.2), it is characterized in that, also comprise the stair control integration valve group being provided with multiple cartridge valve, be connected with stair control integration valve group as the pressure oil-source P controlling power source.
2. Large Electric wheel self-discharging vehicle stair hydraulic control integrated system according to claim 1, it is characterized in that, described stair control integration valve group comprises overflow reduction valve (1), solenoid valve (2), the first Pilot operated check valve (4.1), the second Pilot operated check valve (4.2), the first relief valve (3.1), the second relief valve (3.2), the first one-way throttle valve (5.1), the second one-way throttle valve (5.2) and the first one-way valve (6.1); Overflow reduction valve (1), solenoid valve (2), the first Pilot operated check valve (4.1), the second Pilot operated check valve (4.2), the first relief valve (3.1), the second relief valve (3.2), the first one-way throttle valve (5.1), the second one-way throttle valve (5.2) and the first one-way valve (6.1) are all plugged on manifold block (7).
3. Large Electric wheel self-discharging vehicle stair hydraulic control integrated system according to claim 2, it is characterized in that, pressure oil-source P connects the filler opening (P1) of manifold block (7), and manifold block (7) is provided with two return openings: the first return opening (T) and the second return opening (T1); First return opening (T) of manifold block (7) and the second return opening (T1) all connected tanks (10), external second one-way valve (6.2) of the second return opening (T1) of manifold block (7) and hand stop valve (8); Manifold block (7) is provided with four actuator ports: the first control mouth (A1) that the rising of stair control oil cylinder controls mouth (A), stair control oil cylinder declines control mouth (B), stair control oil cylinder manual-operated emergent declines, stair control oil cylinder manual-operated emergent decline second control mouth (B1), wherein, the stair of manifold block (7) control oil cylinder rising and control the rodless cavity 9-2 that mouth (A) connects stair control oil cylinder (9); The stair of manifold block (7) control oil cylinder decline and control the rod chamber 9-1 that mouth (B) connects stair control oil cylinder (9); The stair of manifold block (7) control oil cylinder manual-operated emergent decline first control mouth (A1) and connect hand stop valve (8); The stair of manifold block (7) control oil cylinder manual-operated emergent decline second control mouth (B1) and connect the second one-way valve (6.2).
4. Large Electric wheel self-discharging vehicle stair hydraulic control integrated system according to claim 3, it is characterized in that, manifold block (7) is provided with three pressure tap: the first pressure tap (M1), the second pressure tap (M2) and the 3rd pressure tap (M3), wherein, the first pressure tap (M1) is located between overflow reduction valve (1) and solenoid valve (2); Second pressure tap (M2) is located at the second relief valve (3.2) and stair control between oil cylinder (9); 3rd pressure tap (M3) is located at the first relief valve (3.1) and stair control between oil cylinder (9).
5. Large Electric wheel self-discharging vehicle stair hydraulic control integrated system according to claim 3, it is characterized in that, the filler opening (P1) of manifold block (7) is through overflow reduction valve (1), solenoid valve (2), first Pilot operated check valve (4.1), the stair control oil cylinder decline that first one-way throttle valve (5.1) is connected to manifold block (7) controls mouth (B) and stair control oil cylinder manual-operated emergent decline second control mouth (B1), the filler opening (P1) of manifold block (7) is through overflow reduction valve (1), solenoid valve (2), second Pilot operated check valve (4.2), the stair control oil cylinder rising that second one-way throttle valve (5.2) is connected to manifold block (7) controls mouth (A) and stair control oil cylinder manual-operated emergent decline first control mouth (A1), first return opening (T) of manifold block (7) and the second return opening (T1) are through overflow reduction valve (1), solenoid valve (2), first Pilot operated check valve (4.1), the stair control oil cylinder decline that first one-way throttle valve (5.1) is connected to manifold block (7) controls mouth (B) and stair control oil cylinder manual-operated emergent decline second control mouth (B1), first return opening (T) of manifold block (7) and the second return opening (T1) are through overflow reduction valve (1), solenoid valve (2), second Pilot operated check valve (4.2), the stair control oil cylinder rising that second one-way throttle valve (5.2) is connected to manifold block (7) controls mouth (A) and stair control oil cylinder manual-operated emergent decline first control mouth (A1), the stair control oil cylinder decline that first return opening (T) of manifold block (7) and the second return opening (T1) are connected to manifold block (7) through the first relief valve (3.1) controls mouth (B) and stair control oil cylinder manual-operated emergent decline second control mouth (B1), the stair control oil cylinder rising that first return opening (T) of manifold block (7) and the second return opening (T1) are connected to manifold block (7) through the second relief valve (3.2) and the first one-way valve (6.1) controls mouth (A) and stair control oil cylinder manual-operated emergent decline first control mouth (A1), second relief valve (3.2) and the first one-way valve (6.1) parallel connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410754626.1A CN104454749B (en) | 2014-12-11 | 2014-12-11 | Hydraulic stair control integrated system of large electric-wheel dump truck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410754626.1A CN104454749B (en) | 2014-12-11 | 2014-12-11 | Hydraulic stair control integrated system of large electric-wheel dump truck |
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| Publication Number | Publication Date |
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| CN104454749A true CN104454749A (en) | 2015-03-25 |
| CN104454749B CN104454749B (en) | 2017-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843904A (en) * | 2019-11-14 | 2020-02-28 | 湘电重型装备有限公司 | Integrated steering and braking control system of large electric wheel dumper |
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| JP2001315177A (en) * | 2000-05-10 | 2001-11-13 | Meiki Co Ltd | Clamping hydraulic apparatus for injection holding machine |
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| CN203098440U (en) * | 2013-01-29 | 2013-07-31 | 湖南鸿辉科技有限公司 | Electric-wheel dump-truck lifting hydraulic integration control valve set |
| CN203906420U (en) * | 2014-05-30 | 2014-10-29 | 中色科技股份有限公司 | Improved hydraulic clamping device for double cone heads in coiling machine |
| CN204371815U (en) * | 2014-12-11 | 2015-06-03 | 湘电重型装备有限公司 | large electric wheel self-discharging vehicle stair hydraulic control integrated system |
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2014
- 2014-12-11 CN CN201410754626.1A patent/CN104454749B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4715180A (en) * | 1984-01-13 | 1987-12-29 | Dynamic Hydraulic Systems, Inc. | Hydraulic lift mechanism |
| JPH05253776A (en) * | 1992-03-13 | 1993-10-05 | Yaskawa Electric Corp | Hydraulic pressure generating device and working machine provided with device thereof |
| JP2001315177A (en) * | 2000-05-10 | 2001-11-13 | Meiki Co Ltd | Clamping hydraulic apparatus for injection holding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843904A (en) * | 2019-11-14 | 2020-02-28 | 湘电重型装备有限公司 | Integrated steering and braking control system of large electric wheel dumper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104454749B (en) | 2017-01-18 |
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