CN102785652A - Integrated control system of wheel type engineering machine - Google Patents
Integrated control system of wheel type engineering machine Download PDFInfo
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- CN102785652A CN102785652A CN2012102939087A CN201210293908A CN102785652A CN 102785652 A CN102785652 A CN 102785652A CN 2012102939087 A CN2012102939087 A CN 2012102939087A CN 201210293908 A CN201210293908 A CN 201210293908A CN 102785652 A CN102785652 A CN 102785652A
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Abstract
The invention discloses an integrated control system of a wheel type engineering machine. A travel braking system and a parking braking system in the integrated control system are independent from each other and do not influence each other. A series pedal valve is treaded by a foot in the travel braking process and controlled to achieve synchronous braking of a front axle wet disc brake and a rear axle wet disc brake; and a parking and emergency braking valve block is controlled through pressing down a parking and emergency braking valve button to open a working oil hole to achieve parking braking in the parking and emergency braking process. According to the integrated control system, the braking operability, reliability and direction stability of the whole machine are effectively improved.
Description
Technical field
The present invention relates to a kind of control system, specifically is a kind of industrial wheeled equipment complex control system.
Background technology
Industrial wheeled equipment generally has two kinds of brake system: air-operated hydraulic brake and all-hydraulic braking.The air-operated hydraulic brake system uses more, does not go out booster pump, air pipe and oil pipe line etc. but this system need dispose Air compressor, oil water separator, storage tank, pressure controller, air brake valve, pneumatic jack; Structure is too complicated and be difficult for arranging that power consumption is big, noise is big that at work, frequent braking can produce a large amount of heats makes the brake system seal failure, causes braking effect unreliable.
The all-hydraulic braking model following advantage of having compared with the air-operated hydraulic brake form: hydraulic tubing is totally-enclosed loop; Can avoid the dust pollution fluid in the atmosphere and reduce the reliability of brake system; Drg is the fully enclosed, and friction lining is immersed in the gear oil, good heat dissipation effect; The front and back bridge divides the two-way braking, is independent of each other, and the reliability of brake system is high.Therefore, full power hydraulic brake system uses in construction machinery and equipment more and more.But its major defect of full power hydraulic brake system on the market is: 1, do not consider the directional balance of car load glancing impact, the maneuverability property of vehicle is not high; 2, there is not the reasonable Arrangement scheme between steering swivel system, brake system and the actr three; 3, there is not complete full pipeline real-time monitoring system.
Summary of the invention
To the problem that above-mentioned prior art exists, the present invention provides a kind of industrial wheeled equipment complex control system that can effectively improve car load brake operation property, reliability and directional balance.
To achieve these goals; The technical scheme that the present invention adopts is: a kind of industrial wheeled equipment complex control system comprises two-way prefill valve, first energy storage, series connection treadle valve, braking taillight pressure switch, reducing valve, back axle drg, parking brake, propons drg, Parking alarm switch, second energy storage, emergency braking step switch, low pressure warning switch, parking and emergency brake valve piece, by pass valve, duplex gear pump, steering pump and turns to oil cylinder; Said propons drg and back axle drg adopt two wet plate disc brakies respectively; Described parking brake is the disc type parking brake that normally closed brake application by spring hydraulic pressure discharges; Duplex gear pump is connected the two-way prefill valve respectively with steering pump; The oil outlet of duplex gear pump links to each other with the P mouth of two-way prefill valve; The A1 mouth of two-way prefill valve and A2 mouth are connected in the P1 mouth and the P2 mouth of series connection treadle valve respectively through pipeline; Be connected with first energy storage on two-way prefill valve and the pipeline of connecting between the treadle valve; Between the working hole A1 that braking taillight pressure switch is connected on the series connection treadle valve and the P mouth of reducing valve, reducing valve is connected between A1 mouth and the back axle drg of series connection treadle valve and the P mouth of reducing valve is connected in the back axle drg, and the working hole A2 of the treadle valve of connecting is connected with the propons drg; Parking alarm switch, second energy storage, emergency braking step switch and low pressure warning switch link to each other with SW3 mouth, A mouth, SW2 mouth and the SW1 mouth of parking emergency brake valve piece respectively; The pressure B mouth of emergency brake valve piece is connected in the disc type parking brake; By pass valve is connected in parallel between the oil outlet and system circuit of duplex gear pump, turns to oil cylinder to link to each other with the working hole of steering pump.
Preferably, the said first energy storage parameter is 2.5L, 50Bar; The said second energy storage parameter is 1.0L, 50Bar.
The invention has the beneficial effects as follows: adopt hydraulic efficiency pressure system as propulsion source, system pressure is high, and the lock torque of generation is big, and the element requisite space is little, and response time is short, and is sluggish little; Adopt energy storage and double-circuit system, guaranteed car brakeing safety and reliability.Adopt oil-immersed multi-disk brake and plate disc brake to combine, the problem of solved preferably that the HM Hydraulic Motor radiating effect that relies on hydraulic braking fully and caused is relatively poor, friction lining being lacked service life.Car load brake operation property, reliability and directional balance have been improved effectively; Pedal force is directly proportional with brake-pressure, is swift in response, and pedal is experienced nature.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: 1, two-way prefill valve, 2, first energy storage, 3, the series connection treadle valve, 4, braking taillight pressure switch, 5, reducing valve; 6, back axle drg, 7, parking brake, 8, the propons drg, 9, the Parking alarm switch; 10, second energy storage, 11, the emergency braking step switch, 12, low pressure warning switch, 13, parking and emergency brake valve piece; 14, by pass valve, 15, duplex gear pump, 16, steering pump, 17, turn to oil cylinder.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in Figure 1: as to the present invention includes two-way prefill valve 1, first energy storage 2, series connection treadle valve 3, braking taillight pressure switch 4, reducing valve 5, back axle drg 6, parking brake 7, propons drg 8, Parking alarm switch 9, second energy storage 10, emergency braking step switch 11, low pressure warning switch 12, parking and emergency brake valve piece 13, by pass valve 14, duplex gear pump 15, steering pump 16 and turn to oil cylinder 17; Duplex gear pump 15 is connected two-way prefill valve 1 respectively with steering pump 16; The oil outlet of duplex gear pump 15 links to each other with the P mouth of two-way prefill valve 1; The A1 mouth of two-way prefill valve 1 and A2 mouth are connected in the P1 mouth and the P2 mouth of series connection treadle valve 3 respectively through pipeline; Be connected with first energy storage 2 on two-way prefill valve 1 and the pipeline of connecting between the treadle valve 3; Between the working hole A1 that braking taillight pressure switch 4 is connected on series connection treadle valve 3 and the P mouth of reducing valve 5, reducing valve 5 is connected between A1 mouth and the back axle drg 6 of series connection treadle valve 3 and the P mouth of reducing valve 5 is connected in back axle drg 6, and the working hole A2 of the treadle valve 3 of connecting is connected with propons drg 8; Parking alarm switch 9, second energy storage 10, emergency braking step switch 11 link to each other with SW3 mouth, A mouth, SW2 mouth and the SW1 mouth of parking emergency brake valve piece 13 respectively with low pressure warning switch 12; The pressure B mouth of emergency brake valve piece 13 is connected in disc type parking brake 7; By pass valve 14 is connected in parallel between the oil outlet and system circuit of duplex gear pump 15, turns to oil cylinder 17 to link to each other with the working hole of steering pump 16.
Duplex gear pump 15 oil outlets link to each other with the P mouth of two-way prefill valve 1; The pressure oil that comes out from the A1 mouth and the A2 mouth of two-way prefill valve 1 flows to the P1 mouth and the P2 mouth of series connection treadle valve 3 respectively; When stepping on series connection treadle valve 3; Bridge made the bridge braking before and after the two-way braking liquid flowed to respectively, wherein flowed to the back axle drg behind the P mouth of one tunnel working hole A1 through series connection treadle valve 3, reducing valve 5, and another road directly flows to the propons drg from the working hole A2 of series connection treadle valve 3; In addition, through the pressure P mouth of SW mouth, parking and the emergency brake valve piece 13 of two-way prefill valve 1, flow to the emergency brake system that disc type parking brake 7 that the brake application by spring hydraulic pressure of back axle discharges is formed from the pressure B mouth of emergency brake valve piece 13 again.
Native system is by duplex gear pump 15 independent fuel feeding, and each alarm switch connects warning indicator lamp respectively, opens the machine power switch; If brake-pressure is lower than 100bar, braking low pressure alarming lamp is bright, after the engine operation; Duplex gear pump 15 is given first energy storage 2 and second energy storage, 10 topping ups through two-way prefill valve 1, and when energy storage pressure reaches 100bar when above, the braking low pressure alarming removes and indicator lamp goes out;, energy storage pressure stops topping up when reaching 120bar-165bar; Should make the electromagnetic valve energising in parking and the emergency brake valve piece 13 before the machine walking, hydraulic oil is through the parking brake 7 of electromagnetic valve entering back axle, and braking during standstill is removed.When stepping on series connection treadle valve 3, bridge made the bridge braking before and after the two-way braking liquid flowed to respectively; Energy storage continues topping up again when being lower than 120bar through energy storage pressure behind the brake action.If because system breaks down; Energy storage pressure is lower than 100bar all the time, the parking checking fault, otherwise when pressure is lower than 85bar; Emergency braking step switch 11 self-openings; Machine is in the stopping brake state at once, presses hand brake switch during parking and makes the electromagnetic valve in parking and the emergency brake valve piece 13 be in off-position, and the disc type parking brake spring reset that the interior hydraulic oil resilience spring brake fluid pressure of back axle this moment discharges holds out against; The back axle braking is to realize the mechanical locking to whole drive system.The present invention realizes front and back bridge synchronous braking under the effect of series connection treadle valve 3; Stop and emergency brake valve piece 13 realization braking during standstills through controlling.
In the braking in a turn major loop, in the vehicle launch stage, two-way prefill valve 1 is to first energy storage 2 and second energy storage, 10 feed flows.After the fluid of working in the accumulator reaches set pressure; Two-way prefill valve 1 connection steering pump 16 is that the O mouth of two-way prefill valve 1 is communicated with steering pump P mouth; The fluid that this moment, duplex gear pump 15 provided can directly get into and turn to the loop, promptly realizes the intensive fuel feeding of skid steer by the O mouth to steering pump 16 fuel feeding; Because the power fluid hydraulic coupling of coming out from series connection treadle valve 3 equates; If two oil-immersed multi-disk brake maximum brake pressure of back axle and two oil-immersed multi-disk brake maximum brake pressure of propons are unequal; In order to satisfy the two-way difference of pressure; In the back axle pipeline, increased reducing valve 5, the reasonable distribution of bridge lock torque before and after reaching.
Native system is opened 11 through braking taillight pressure switch 4 and emergency braking action and respectively industrial wheeled equipment service brake action and braking during standstill action is monitored in real time; And the use of Parking alarm switch 9 and low pressure warning switch 12; Can realize the Parking state is carried out all the period of time monitoring, guarantee vehicle Parking safety; The parking brake 7 of bearing braking during standstill in the native system is positioned at the back axle power intake for the disc type parking brake that normally closed brake application by spring hydraulic pressure discharges; It is axially little with radial dimension, and braking liquid is heated that the chance of vaporization is less, good, the braking effect of resistance to elevated temperatures is stablized during high load capacity.
Claims (2)
1. an industrial wheeled equipment complex control system is characterized in that comprising two-way prefill valve (1), first energy storage (2), series connection treadle valve (3), braking taillight pressure switch (4), reducing valve (5), back axle drg (6), parking brake (7), propons drg (8), Parking alarm switch (9), second energy storage (10), emergency braking step switch (11), low pressure warning switch (12), parking and emergency brake valve piece (13), by pass valve (14), duplex gear pump (15), steering pump (16) and turns to oil cylinder (17); Said propons drg (8) and back axle drg (6) adopt two wet plate disc brakies respectively; Described parking brake (7) is the disc type parking brake that normally closed brake application by spring hydraulic pressure discharges; Duplex gear pump (15) is connected two-way prefill valve (1) respectively with steering pump (16); The oil outlet of duplex gear pump (15) links to each other with the P mouth of two-way prefill valve (1); The A1 mouth of two-way prefill valve (1) and A2 mouth are connected in the P1 mouth and the P2 mouth of series connection treadle valve (3) respectively through pipeline; Be connected with first energy storage (2) on the pipeline between two-way prefill valve (1) and the treadle valve of connecting (3); Braking taillight pressure switch (4) is connected between the P mouth of working hole A1 and reducing valve (5) of series connection treadle valve (3); Reducing valve (5) is connected between A1 mouth and the back axle drg (6) of series connection treadle valve (3) and the P mouth of reducing valve (5) is connected in back axle drg (6), and the working hole A2 of the treadle valve (3) of connecting is connected with propons drg (8); Parking alarm switch (9), second energy storage (10), emergency braking step switch (11) and low pressure warning switch (12) link to each other with SW3 mouth, A mouth, SW2 mouth and the SW1 mouth of parking emergency brake valve piece (13) respectively; The pressure B mouth of emergency brake valve piece (13) is connected in disc type parking brake (7); By pass valve (14) is connected in parallel between the oil outlet and system circuit of duplex gear pump (15), turns to oil cylinder (17) to link to each other with the working hole of steering pump (16).
2. a kind of industrial wheeled equipment complex control system according to claim 1 is characterized in that said first energy storage (2) parameter is 2.5L, 50Bar; Said second energy storage (10) parameter is 1.0L, 50Bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210293908.7A CN102785652B (en) | 2012-08-17 | 2012-08-17 | Integrated control system of wheel type engineering machine |
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| CN201210293908.7A CN102785652B (en) | 2012-08-17 | 2012-08-17 | Integrated control system of wheel type engineering machine |
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| CN102785652A true CN102785652A (en) | 2012-11-21 |
| CN102785652B CN102785652B (en) | 2014-07-16 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061903A (en) * | 2012-12-25 | 2013-04-24 | 三一重机有限公司 | System and method for emergent shutdown |
| CN106143456A (en) * | 2016-08-30 | 2016-11-23 | 安徽合力股份有限公司 | The brakes of large-tonnage storage battery forktruck |
| CN107161129A (en) * | 2017-05-31 | 2017-09-15 | 徐州徐工挖掘机械有限公司 | A kind of novel high speed wheeled excavating brake system |
| CN109944835A (en) * | 2019-04-02 | 2019-06-28 | 重庆平山矿山机电设备有限公司 | A kind of hydraulic system and drilling machine of drilling machine |
| CN110541856A (en) * | 2019-08-23 | 2019-12-06 | 安徽合力股份有限公司 | Unmanned operation automatic control forklift brake hydraulic system |
| CN110778540A (en) * | 2019-11-26 | 2020-02-11 | 三一汽车制造有限公司 | Paver hydraulic system and paver |
| CN111469825A (en) * | 2020-04-07 | 2020-07-31 | 中国煤炭科工集团太原研究院有限公司 | Full-hydraulic braking efficiency sequential distribution system of mining rubber-tyred vehicle |
| CN111717035A (en) * | 2020-06-23 | 2020-09-29 | 徐工集团工程机械股份有限公司科技分公司 | Braking system and braking method for super-tonnage electric transmission loader |
| CN114056297A (en) * | 2022-01-12 | 2022-02-18 | 中车戚墅堰机车车辆工艺研究所有限公司 | Hydraulic braking device for vehicle and control system thereof |
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| US20070125614A1 (en) * | 2004-09-15 | 2007-06-07 | Yoshiharu Sato | Control device for input clutch of work vehicle |
| JP2010156395A (en) * | 2008-12-26 | 2010-07-15 | Kobelco Contstruction Machinery Ltd | Swing braking device of construction machine |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061903A (en) * | 2012-12-25 | 2013-04-24 | 三一重机有限公司 | System and method for emergent shutdown |
| CN106143456A (en) * | 2016-08-30 | 2016-11-23 | 安徽合力股份有限公司 | The brakes of large-tonnage storage battery forktruck |
| CN107161129A (en) * | 2017-05-31 | 2017-09-15 | 徐州徐工挖掘机械有限公司 | A kind of novel high speed wheeled excavating brake system |
| CN109944835A (en) * | 2019-04-02 | 2019-06-28 | 重庆平山矿山机电设备有限公司 | A kind of hydraulic system and drilling machine of drilling machine |
| CN110541856A (en) * | 2019-08-23 | 2019-12-06 | 安徽合力股份有限公司 | Unmanned operation automatic control forklift brake hydraulic system |
| CN110778540A (en) * | 2019-11-26 | 2020-02-11 | 三一汽车制造有限公司 | Paver hydraulic system and paver |
| CN110778540B (en) * | 2019-11-26 | 2021-08-06 | 三一汽车制造有限公司 | Paver hydraulic system and paver |
| CN111469825A (en) * | 2020-04-07 | 2020-07-31 | 中国煤炭科工集团太原研究院有限公司 | Full-hydraulic braking efficiency sequential distribution system of mining rubber-tyred vehicle |
| CN111717035A (en) * | 2020-06-23 | 2020-09-29 | 徐工集团工程机械股份有限公司科技分公司 | Braking system and braking method for super-tonnage electric transmission loader |
| CN114056297A (en) * | 2022-01-12 | 2022-02-18 | 中车戚墅堰机车车辆工艺研究所有限公司 | Hydraulic braking device for vehicle and control system thereof |
| CN114056297B (en) * | 2022-01-12 | 2022-04-12 | 中车戚墅堰机车车辆工艺研究所有限公司 | Hydraulic brake control system for vehicle |
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| CN102785652B (en) | 2014-07-16 |
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