CN103010778B - A kind of hydraulic control system for car dumper - Google Patents
A kind of hydraulic control system for car dumper Download PDFInfo
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- CN103010778B CN103010778B CN201210582731.2A CN201210582731A CN103010778B CN 103010778 B CN103010778 B CN 103010778B CN 201210582731 A CN201210582731 A CN 201210582731A CN 103010778 B CN103010778 B CN 103010778B
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- 238000003825 pressing Methods 0.000 claims abstract description 30
- 239000002828 fuel tank Substances 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 230000001934 delay Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 64
- 230000009471 action Effects 0.000 description 13
- 239000007787 solid Substances 0.000 description 9
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 8
- 235000011613 Pinus brutia Nutrition 0.000 description 8
- 241000018646 Pinus brutia Species 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000003042 antagnostic effect Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The present invention relates to a kind of Novel car dumper hydraulic control system, comprise hydraulic power unit, carriage pressing device and lean on car device, hydraulic power unit comprises Hydraulic Pump, actuating device, fuel tank and hydraulic efficiency pressure system, hydraulic power unit is arranged on ground, have employed control setup, carriage pressing device and be controlled by control setup by car device, actuating device is made up of motor and Hydraulic Pump; Actuating device is by hydraulic circuit and hydraulic efficiency pressure system accessory; Fuel tank is by hydraulic circuit and hydraulic efficiency pressure system accessory; Carriage pressing device adopts clamping oil cylinder, adopts by car oil cylinder by car device.Fuel tank is furnished with oil level indicator, airfilter, temperature booster, cooling vessel and measurement device of oil tempera.Adopt the Hydraulic Elements being provided with differential circuit, be furnished with shuttle valve, use the control cover plate having charged monitoring off position, and have employed QM type induction type range limiter, QM type induction type range limiter is used for monitoring.Advantage is, novel, rational in infrastructure, stable performance, should use safe and reliable.
Description
Technical field
The present invention relates to a kind of hydraulic control system, particularly a kind of hydraulic control system for car dumper.Tipper is the specialized equipment of dumping truck, and it belongs to the technical field of bulk solid loader and unloader tool equipment.
Background technology
Tipper is a kind of heavy mechanical equipment being used for dumping truck, be applicable to the coke-oven plant, sintering plant etc. of large-size thermal power plant, chemical plant, cement mill, harbour, storage and transport station and metallurgy industry, for the coal of dumping different kinds of railways open-top car delivery, ore and other loose unpacked materials.Different by the quantity of each dumping vehicle, tipper is divided into rigid vehicle tipper, double-car dump, 3-car dumper etc.
Tipper, when dumping starts, needs to drive its delay unloading mechanism and backup plate, carries out delaying unloading and leaning on car.After dumping starts, need to carry out safety locking to delay unloading mechanism and backup plate, simultaneously, due to the change of center of gravity and the minimizing of Loaded goods of institute's dumping vehicle, truck spring can produce antagonistic force to mechanism of delaying unloading, in order to the antagonistic force that overcomes spring is to the adverse effect of tipper and vehicle itself, need to discharge to the spring force of vehicle.After tipper returns and translates into position, also to carry out pine pressure to delay unloading mechanism and backup plate and pine leans on.
According to the knowledge of the applicant, existing tipper is the hydraulic actuating cylinder absorption by arranging in addition to the spring force that truck discharges, or is absorbed by the antagonistic spring of special setting.By experiment and research, applicant finds, the shortcoming that existing tipper exists is can not Real-Time Monitoring or control, and thus its safe reliability is not high.
Chinese patent literature CN201580012U(application number 201020020509.X) disclose " hydraulic control system for hydraulic press ", it comprises hydraulic power source, operating cylinder one and operating cylinder two, described hydraulic power source outlet is connected with electromagnetic valve one P mouth, described electromagnetic valve one O mouth is connected with fuel tank by pipeline, described electromagnetic valve one A mouth is connected by the rodless cavity of pipeline with operating cylinder one, and described electromagnetic valve one B mouth is connected by the rod chamber of pipeline with operating cylinder one; Described hydraulic power source outlet is connected with electromagnetic valve four S mouth by pipeline, described electromagnetic valve four T mouth is connected with fuel tank by pipeline, described electromagnetic valve four C mouth is connected with operating cylinder two rodless cavity by pipeline, and described electromagnetic valve four D mouth is connected with operating cylinder two rod chamber.There is following features: the dwell time can by Control; Dwell time is long, pressure stability is high; Employing mechanical-electrical-hydraulic integration designs, and intelligence degree is high.But because its fluid control places one's entire reliance upon Control, safe reliability degree is not high, can not accomplish Real-Time Monitoring, be not suitable as hydraulic control system for car dumper.
Summary of the invention
The object of the invention is, for the deficiency that above-mentioned prior art exists, improve, propose and study a kind of hydraulic control system for car dumper, it is multiple functional, safe and reliable, be applicable to the multiple tippers such as rigid vehicle tipper, double-car dump, 3-car dumper, the work in every requirement of the tipper of these different structures can be met.
Technical solution of the present invention is, comprise hydraulic power unit, carriage pressing device and lean on car device, hydraulic power unit and carriage pressing device and connect by car device, hydraulic power unit comprises Hydraulic Pump, actuating device, fuel tank and hydraulic efficiency pressure system, hydraulic power unit is arranged on ground, it is characterized in that, have employed control setup, carriage pressing device and be controlled by control setup by car device, actuating device is made up of motor and Hydraulic Pump; Actuating device is by hydraulic circuit and hydraulic efficiency pressure system accessory; Fuel tank is by hydraulic circuit and hydraulic efficiency pressure system accessory; Carriage pressing device adopts clamping oil cylinder, adopts by car oil cylinder by car device.
It is characterized in that, control setup have employed control cock block.
It is characterized in that, Hydraulic Pump adopts oblique disk structure shaft orientation plunger variable pump.
It is characterized in that, fuel tank is furnished with oil level indicator, airfilter, temperature booster, cooling vessel and measurement device of oil tempera.
It is characterized in that, control cock block is arranged on clamping oil cylinder and leans on by car oil cylinder.
It is characterized in that, control cock block have employed Hydraulic Elements, is furnished with shuttle valve, uses the control cover plate having charged monitoring closing appliance, and have employed QM type induction type range limiter, and QM type induction type range limiter is used for monitoring.
It is characterized in that, Hydraulic Elements adopt plug-in structure.
It is characterized in that, clamping oil cylinder adopts two-way hydraulic cylinder, and two-way hydraulic cylinder is furnished with by pass valve.
It is characterized in that, be the hydraulic actuating cylinder of two ends dress oscillating bearing by car oil cylinder.
It is characterized in that, Hydraulic Elements adopt the Hydraulic Elements being provided with differential circuit.
Innovative point of the present invention is: the spring force that 1, can absorb open-top car well; The spring force of open-top car is released through short piston rod and absorbs, and the burst size of spring is regulated by by pass valve.2, Real-Time Monitoring or control can be accomplished to the working condition of tipper.3, rational in infrastructure, stable performance, safe and reliable.
Advantage of the present invention is, novel, rational in infrastructure, stable performance, adopts hydraulic power unit to ensure that the normal work requirements of whole system, should use safe and reliable, can meet the work in every requirement of tipper, have good market outlook.
Accompanying drawing explanation
Fig. 1, basic structure schematic diagram of the present invention.
The structural representation of the hydraulic power unit that Fig. 2, the present invention adopt.
The structural solid figure of the hydraulic power unit that Fig. 3, the present invention adopt.
The structural solid figure birds-eye view of the hydraulic power unit that Fig. 4, the present invention adopt.
The structural representation of the carriage pressing device that Fig. 5, the present invention adopt.
The structural solid figure of the carriage pressing device that Fig. 6, the present invention adopt.
The structural solid birds-eye view of the carriage pressing device that Fig. 7, the present invention adopt.
The structural solid lateral plan of the carriage pressing device that Fig. 8, the present invention adopt.
The structural representation by car device that Fig. 9, the present invention adopt.
The structure structural solid figure by car device that Figure 10, the present invention adopt.
The structure structural solid birds-eye view by car device that Figure 11, the present invention adopt.
The structure structural solid lateral plan by car device that Figure 12, the present invention adopt.
In figure, fuel tank 1, solenoid directional control valve 2, by pass valve 3, motor 4, Hydraulic Pump 5, by pass valve 6, reducing valve 7, by pass valve 8, solenoid directional control valve 9, inserted valve 10, inserted valve 11, shuttle valve 12, pressure relay 13, oil cylinder 14, by pass valve 15, reducing valve 16, solenoid directional control valve 17, inserted valve 18, inserted valve 19, shuttle valve 20, pressure relay 21, oil cylinder 22.
Detailed description of the invention
Below, with reference to the accompanying drawings, embodiments of the invention are described in detail.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, the present invention includes hydraulic power unit, carriage pressing device and lean on car device, hydraulic power unit comprises Hydraulic Pump, actuating device, fuel tank 1 and hydraulic efficiency pressure system, and hydraulic power unit is arranged on ground.Present invention employs control setup, hydraulic power unit and control setup accessory.Carriage pressing device and be controlled by control setup by car device, control setup comprises the control part and by car control part of delaying unloading.Actuating device is made up of motor 4 and Hydraulic Pump 5; Actuating device includes four motors 4 and four Hydraulic Pumps 5; Actuating device is by hydraulic circuit and hydraulic efficiency pressure system accessory; Fuel tank 1 is by hydraulic circuit and hydraulic efficiency pressure system accessory.Carriage pressing device adopts clamping oil cylinder 14, adopts by car oil cylinder 22 by car device, carriage pressing device and by car device respectively with regenerator section accessory.Clamping oil cylinder 14 and control part accessory of delaying unloading.By car oil cylinder 22 and by car control part accessory.Hydraulic Pump adopts oblique disk structure shaft orientation plunger variable pump.
The P interface of hydraulic power unit, T interface connect carriage pressing device respectively and lean on P interface, the T interface of car device and regenerator section, carriage pressing device and connecting by the D interface of car device and the D interface of hydraulic power unit, hydraulic power unit is also provided with P1 interface, T1 interface, D1 interface and organizes carriage pressing device with another and lean on the corresponding interface of car device and regenerator section to connect.
For adapting to low-temperature working environment, the fuel tank 1 of hydraulic power unit of the present invention is equipped with temperature booster, is heated by temperature booster, and its pipe section adopts regenerator section heating.Regenerator section comprises oil path block, electromagnetic valve and inserted valve etc., work as solenoid valves, pressure oil circuit and oil return circuit conducting, after oil pump is opened, oil circulation circulates, the while that hydraulic oil in the fuel tank 1 heated flowing in pipeline, the low temperature hydraulic oil in former pipeline can flow back to fuel tank 1, this makes it possible to make the temperature of oil pipe to be improved rapidly.
Control setup have employed control cock block.Control cock block is arranged on clamping oil cylinder 14 and leans on car oil cylinder 22 other.Control cock block adopts Hydraulic Elements, is furnished with shuttle valve, uses the control cover plate having charged monitoring closing appliance, and have employed QM type induction type range limiter, and QM type induction type range limiter is used for monitoring.Hydraulic Elements adopt the Hydraulic Elements being provided with differential circuit.Each control setup have employed two control cock blocks, one for control part of delaying unloading, one for by car control part.Fuel tank 1 is equipped with oil level indicator, airfilter, temperature booster, cooling vessel and measurement device of oil tempera.Two control cock blocks of each control setup be arranged on a clamping oil cylinder 14 respectively and one other by car oil cylinder 22.Multiple clamping oil cylinder 14 forms clamping oil cylinder group.Multiple car oil cylinder 22 that leans on is formed by car oil cylinder group.Clamping oil cylinder 14 adopts two-way hydraulic cylinder, and two-way hydraulic cylinder is furnished with by pass valve.Hydraulic Elements adopt plug-in structure.
Carriage pressing device is by by pass valve 6, and reducing valve 7, by pass valve 8, solenoid directional control valve 9, inserted valve 10, inserted valve 11, shuttle valve 12, pressure relay 13, clamping oil cylinder 14 forms.Wherein, by pass valve 6 and reducing valve 7 connect, reducing valve 7 connects with by pass valve 8, inserted valve 10, clamping oil cylinder 14 respectively, solenoid directional control valve 9 and shuttle valve 12 connect, shuttle valve 12 and pressure relay 13 connect, and inserted valve 11 is connected with shuttle valve 12, pressure relay 13, inserted valve 10, clamping oil cylinder 14.By pass valve 8 is connected with clamping oil cylinder 14.
Clamping oil cylinder 14 adopts two-way hydraulic cylinder, and two-way hydraulic cylinder is furnished with by pass valve.
As shown in Figure 5, the operation pressure of carriage pressing device is set up by reducing valve 7.To delay unloading action: solenoid directional control valve 9 left side electromagnet is energized, inserted valve 11 is closed under pressure oil effect, inserted valve 10 is because controlling mouth without opened by pressure, clamping oil cylinder 14 rod chamber is communicated with stroke differential circuit with rodless cavity, piston rod has stretched out action of delaying unloading, in the process of delaying unloading, as clamping oil cylinder 14 rodless cavity hypertonia, can by by pass valve 8 overflow be communicated with auxiliary cylinder.Pine presses work: electromagnet energising on the right of solenoid directional control valve 9, inserted valve 11 is because controlling mouth without opened by pressure, and the rodless cavity of clamping oil cylinder 14 is communicated with oil return line, and inserted valve 10 is closed under pressure oil effect, pressure oil enters the rod chamber of clamping oil cylinder 14, and piston rod has been retracted loose car action.In Fig. 5, the left side hydraulic fluid port of below is connected with the P interface of hydraulic power unit, and the middle hydraulic fluid port of below is connected with D interface, and the right hydraulic fluid port of below is connected with T interface.
By car device by by pass valve 15, reducing valve 16, solenoid directional control valve 17, inserted valve 18, inserted valve 19, shuttle valve 20, pressure relay 21, forms by car oil cylinder 22.Wherein, wherein, by pass valve 15 and reducing valve 16 connect, reducing valve 16 is respectively with inserted valve 18, connect by car oil cylinder 22, solenoid directional control valve 19 and shuttle valve 20 connect, shuttle valve 20 and pressure relay 21 connect, and inserted valve 19 is with shuttle valve 20, pressure relay 21, inserted valve 18, be connected by car oil cylinder 22.By the hydraulic actuating cylinder of car oil cylinder 22 for two ends dress oscillating bearing.
As shown in Figure 9, the operation pressure by car device is set up by reducing valve 16.By car action: solenoid directional control valve 17 left side electromagnet is energized, and inserted valve 19 is closed under pressure oil effect, inserted valve 18 is because controlling mouth without opened by pressure, and be communicated with stroke differential circuit by car oil cylinder 22 rod chamber with rodless cavity, piston rod has stretched out by car action.Pine is by action: electromagnet energising on the right of solenoid directional control valve 17, inserted valve 19 is because controlling mouth without opened by pressure, and the rodless cavity by car oil cylinder 22 is communicated with oil return line, and inserted valve 18 is closed under pressure oil effect, pressure oil enters the rod chamber by car oil cylinder 22, and piston rod has retracted pine by action.In Fig. 9, the left side hydraulic fluid port of below is connected with hydraulic power unit P interface, and the middle hydraulic fluid port of below is connected with D interface, and the right hydraulic fluid port of below is connected with T interface.
Actuating device adopts four motors, 4, four Hydraulic Pumps 5 to drive work simultaneously, and Hydraulic Pump 5 adopts oblique disk structure shaft orientation plunger variable pump.The control of Hydraulic Pump 5 is synchronous Isobarically Control, and the force value of hydraulic efficiency pressure system is preset by the by pass valve that accepts external pressure, every platform Hydraulic Pump 5 all can by one independently 24 logical solenoid directional control valves depart from from system.Hydraulic power unit is arranged on ground, and the flexible hose twisted on tipper end plate by two provides hydraulic power to 4 clamping oil cylinders 14 and 4 by car oil cylinder 22.
The spring force of truck is released through short piston rod and absorbs, and the burst size of spring is regulated by by pass valve, but is maximumly no more than short piston rod stroke.
Hydraulic power unit provides the power of whole system hydraulic pressure, can carry out off-load when off working state.
The mechanism action of delaying unloading of tipper is responsible for by the control part of delaying unloading of carriage pressing device, the power of delaying unloading of adjustable tipper, and carries out the release of the spring force of truck, and the speed of delaying unloading of carriage pressing device is adjustable, to meet the overturning efficiency of tipper.The control part of delaying unloading of carriage pressing device cooperatively interacting with the car control part that leans on controlled by the work of car device, send control command, make the mechanical driving part coordinating tipper by car device, be responsible for the backup plate action of tipper, it is adjustable by car power, and railway standard requirement can be met, backup plate by vehicle speed adjustable, the synchronism of backup plate action also can suitably adjust.
The basic process adopting tipper of the present invention to carry out work is: 1, start motor 4 of the present invention and Hydraulic Pump 5; 2, after the truck of load-carrying is located on tipper, solenoid directional control valve 2 of the present invention and solenoid directional control valve 9 are by action simultaneously, piston rod on clamping oil cylinder 14 is descending, delay unloading mechanism fall, after carriage pressing device pushes down side board, pressure relay 13 of the present invention and inserted valve 11 send signal, and clamping oil cylinder 14 compresses and puts in place; 3. solenoid directional control valve 17 of the present invention action, backup plate by car device stretches out, after the top truck of backup plate, pressure relay 21 of the present invention and inserted valve 19 send signal, and the backup plate by car device puts in place by car, and tipper begins turning simultaneously, while tipper upset, the auxiliary piston of clamping oil cylinder 14 can stretch out along with the release of vehicle spring force, and pressure increases gradually, but is no more than the safe pressure that by pass valve 8 sets; 4., after tipper returns and translates into zero-bit, solenoid directional control valve 9 and solenoid directional control valve 17 action simultaneously, the piston rod on clamping oil cylinder 14 is up, and carriage pressing device pine pressure, the auxiliary piston of clamping oil cylinder 14 resets.Meanwhile, retract by car oil cylinder 22 piston rod, the backup plate pine by car device leans on; 5., after carriage pressing device return and the backup plate pine by car device put in place, solenoid directional control valve 2 cuts out oil circuit.At this moment allow to lead and send second section truck to enter tipper, enter circulation next time.
Claims (7)
1. a hydraulic control system for car dumper, comprise hydraulic power unit, carriage pressing device and lean on car device, hydraulic power unit and carriage pressing device and connect by car device, hydraulic power unit comprises Hydraulic Pump, actuating device, fuel tank and hydraulic efficiency pressure system, hydraulic power unit is arranged on ground, have employed control setup, it is characterized in that, carriage pressing device and be controlled by control setup by car device; Control setup comprises delays unloading control part and leans on car control part; Actuating device is made up of motor (4) and Hydraulic Pump (5), and Hydraulic Pump (5) adopts oblique disk structure shaft orientation plunger variable pump; Actuating device is by hydraulic circuit and hydraulic efficiency pressure system accessory; Fuel tank (1) is by hydraulic circuit and hydraulic efficiency pressure system accessory; Carriage pressing device adopts clamping oil cylinder (14), adopts by car oil cylinder (22) by car device; Clamping oil cylinder (14) and control part accessory of delaying unloading; By car oil cylinder (22) and by car control part accessory; Control setup have employed control cock block; Control cock block have employed Hydraulic Elements, is furnished with shuttle valve, uses the control cover plate having charged monitoring closing appliance, and have employed QM type induction type range limiter, and QM type induction type range limiter is used for monitoring.
2. a kind of hydraulic control system for car dumper according to claim 1, is characterized in that, fuel tank (1) is furnished with oil level indicator, airfilter, temperature booster, cooling vessel and measurement device of oil tempera.
3. a kind of hydraulic control system for car dumper according to claim 1, is characterized in that, control cock block is arranged on clamping oil cylinder (14) and leans on car oil cylinder (22) other.
4. a kind of hydraulic control system for car dumper according to claim 1, is characterized in that, Hydraulic Elements adopt plug-in structure.
5. a kind of hydraulic control system for car dumper according to claim 1, is characterized in that, clamping oil cylinder (14) adopts two-way hydraulic cylinder, and two-way hydraulic cylinder is furnished with by pass valve.
6. a kind of hydraulic control system for car dumper according to claim 1, is characterized in that, by the hydraulic ram of car oil cylinder (22) for two ends dress oscillating bearing.
7. a kind of hydraulic control system for car dumper according to claim 1, is characterized in that, Hydraulic Elements adopt the Hydraulic Elements being provided with differential circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582731.2A CN103010778B (en) | 2012-12-28 | 2012-12-28 | A kind of hydraulic control system for car dumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582731.2A CN103010778B (en) | 2012-12-28 | 2012-12-28 | A kind of hydraulic control system for car dumper |
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| CN103010778A CN103010778A (en) | 2013-04-03 |
| CN103010778B true CN103010778B (en) | 2016-02-24 |
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| CN201210582731.2A Active CN103010778B (en) | 2012-12-28 | 2012-12-28 | A kind of hydraulic control system for car dumper |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191439B (en) * | 2017-06-23 | 2018-07-27 | 武汉科技大学 | A kind of overturning machine hydraulic system |
| CN108750732B (en) * | 2018-05-28 | 2021-04-09 | 华电重工股份有限公司 | Method and system for adjusting pressing position of vehicle tippler |
| CN114458646A (en) * | 2022-01-27 | 2022-05-10 | 大连华锐重工集团股份有限公司 | Hydraulic system of car dumper and control method thereof |
| CN116605680A (en) * | 2023-05-19 | 2023-08-18 | 北京速力科技有限公司 | Remote interlocking automatic full ore unloading method of mine dumper and tram locomotive |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201268516Y (en) * | 2008-09-09 | 2009-07-08 | 武汉电力设备厂 | Hydraulic transmission apparatus of car dumper |
| CN201713127U (en) * | 2010-07-01 | 2011-01-19 | 天津赛瑞机器设备有限公司 | Tipping device for tipper of rotary rail car |
| CN201999543U (en) * | 2010-07-14 | 2011-10-05 | 大连华锐股份有限公司 | Hydraulic control system for pressing mechanism of tipper |
| CN202414810U (en) * | 2012-02-22 | 2012-09-05 | 中国神华能源股份有限公司 | Dumper |
-
2012
- 2012-12-28 CN CN201210582731.2A patent/CN103010778B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201268516Y (en) * | 2008-09-09 | 2009-07-08 | 武汉电力设备厂 | Hydraulic transmission apparatus of car dumper |
| CN201713127U (en) * | 2010-07-01 | 2011-01-19 | 天津赛瑞机器设备有限公司 | Tipping device for tipper of rotary rail car |
| CN201999543U (en) * | 2010-07-14 | 2011-10-05 | 大连华锐股份有限公司 | Hydraulic control system for pressing mechanism of tipper |
| CN202414810U (en) * | 2012-02-22 | 2012-09-05 | 中国神华能源股份有限公司 | Dumper |
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| CN103010778A (en) | 2013-04-03 |
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Address after: 430064 Wuchang District of Hubei province Wuhan City Baishazhou special No. 1 Patentee after: China Electric Construction Group Wuhan heavy industry equipment Co., Ltd. Address before: 430064 Wuchang District of Hubei province Wuhan City Baishazhou special No. 1 Patentee before: Wuhan Electric Power Equipment Plant |
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