CN203514161U - Hydraulic traveling control system of double-steel wheel road roller - Google Patents
Hydraulic traveling control system of double-steel wheel road roller Download PDFInfo
- Publication number
- CN203514161U CN203514161U CN201320690262.6U CN201320690262U CN203514161U CN 203514161 U CN203514161 U CN 203514161U CN 201320690262 U CN201320690262 U CN 201320690262U CN 203514161 U CN203514161 U CN 203514161U
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- Prior art keywords
- valve
- pump
- control system
- motor
- road roller
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 15
- 239000010959 steel Substances 0.000 title claims abstract description 15
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 15
- 239000003921 oil Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 4
- 238000007596 consolidation process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a hydraulic traveling control system of a double-steel wheel road roller. The hydraulic traveling control system comprises an engine (1), a traveling pump (2), a brake valve block (3), a flush valve, a front traveling motor (7), a one-way valve (8) and a rear traveling motor (9), wherein the traveling pump (2) comprises a variable pump (13) and a make-up oil pump (12); and the traveling pump (2) is connected with the engine (1). The hydraulic traveling control system is characterized in that the brake valve block (3) is composed of a hydraulic control valve (4) and an electromagnetic valve (5), the oil transportation opening of the make-up oil pump (12) is divided into two branches, and one branch is connected to the series oil circuit between the front traveling motor (7) and the rear traveling motor (9) through a pipeline 1 and the one-way valve (8), while the other branch goes into the rod chambers of the brake cylinders of the front traveling motor (7) and the rear traveling motor (9) through an electromagnetic valve (5) and a pipeline 2, and the pipeline 2 is in closed loop communication with the variable pump (13) through the hydraulic control valve (4). The hydraulic traveling control system is compact in structure layout, can realize emergency brake of a road roller and speed synchronism of two steel wheels, and improves the safety and compactness property of the road roller.
Description
Technical field
The utility model relates to a kind of hydraulic system, particularly relates to a kind of dual-steel wheel road roller walking hydraulic control system.
Background technology
The dual-steel wheel road roller of the little tonnage modes that pull friction catch that adopt on market more, operation effort, reaction is slow, and friction place is easy to wear.For the road roller that adopts closed system and running motor series connection, depend merely on the leakage of pump and motor to system radiating poor effect, be not suitable at high temperature long-time continuous operation, during motor series connection, fluid is flowed through after first motor and is had certain loss, before and after causing, motor rotary speed is inconsistent, there will be trickle fold, thereby affect consolidation effect during compacted subgrade.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of dual-steel wheel road roller walking hydraulic control system is provided, and is intended to improve system radiating ability and cleanliness factor, and the ability of reply emergency.
For achieving the above object, the technical solution adopted in the utility model is:
A dual-steel wheel road roller walking hydraulic control system, comprises motor, traveling pump, brake valve piece, flushing valve, front running motor, one way valve, after running motor, and described traveling pump comprises variable pump and slippage pump; Described traveling pump is connected with motor, it is characterized in that, described brake valve piece is comprised of pilot operated valve device and electromagnetic valve, and the oil transportation mouth of described slippage pump is divided into two-way, leads up to pipeline one and one way valve to enter the series connection oil circuit between front running motor and after running motor; Separately leading up to electromagnetic valve, pipeline two enters the rod chamber of front running motor and after running motor brake cylinder; Described pipeline two forms closed-loop path by pilot operated valve device and variable pump and is communicated with.
The utility model design feature is also:
Described pilot operated valve device is two-position two-way hydraulic control reversal valve.
Described electromagnetic valve is two position, three-way electromagnetic change valve, controls the dead electricity that obtains of electromagnetic valve by eye-catching electric button.
Described traveling pump is manual bidirectional Variable plunger pump.
Described front running motor and after running motor are two-way quantitative motor.
The utility model compared with prior art has advantage: this system is by adding brake valve piece and electrical control button, can be when road roller working generation emergency, driver claps eye-catching electric button by pressing, in time, effectively make steel wheel braking, so easy to operate, reaction time is fast, and braking distance is short, has improved the safety of road roller.Brake valve piece is directly connected with running motor, and compact conformation is convenient to realize.This system is also at a plunger delivery side of pump flushing valve piece in parallel, intrasystem deep fat is got back to fuel tank by flushing valve cooling, slippage pump in traveling pump is that system is supplemented the clean cold oil through filtering simultaneously, avoids system inner fluid excess Temperature, and guarantees the clean of fluid.This system layout is compact, easy to use, safe.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present utility model.
Description of reference numerals: 1-motor; 2-traveling pump; 3-brake valve piece; 4-pilot operated valve device; 5-electromagnetic valve; 6-flushing valve; Running motor before 7-; 8-one way valve; 9-after running motor; 10-high-pressure overflow valve; 11-low pressure relief valve; 12-slippage pump; 13-variable pump.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.
A kind of dual-steel wheel road roller walking hydraulic control system as shown in Figure 1, this hydraulic control system comprises motor 1, traveling pump 2, brake valve piece 3, flushing valve 6, front running motor 7, one way valve 8, after running motor 9.Traveling pump 2 is connected with motor 1, and traveling pump 2 comprises variable pump 13, slippage pump 12, low pressure relief valve 11, high-pressure overflow valve 10.Brake valve piece 3 comprises pilot operated valve device 4 and electromagnetic valve 5.Pilot operated valve device 4 is 2/2-way pilot operated directional control valve; Electromagnetic valve 5 is two-bit triplet solenoid operated directional valve, controls the dead electricity that obtains of electromagnetic valve 5 by eye-catching electric button.Traveling pump 2 is manual bidirectional Variable plunger pump, and the flushing valve 6 in parallel of plunger delivery side of pump, upgrades the hydraulic oil in walking closed system, to system, carries out cooling.Front running motor 7 and after running motor 9 are two-way quantitative motor, and subsidiary normally closed type clutch.The oil transportation mouth of slippage pump 12 is divided into two-way, leads up to pipeline one and one way valve 8 to enter the series connection oil circuit between front running motor 7 and after running motor 9; Separately leading up to electromagnetic valve 5, pipeline two enters the rod chamber of front running motor 7 and after running motor 9 brake cylinders; Described pipeline two forms closed-loop path by pilot operated valve device 4 with variable pump 13 and is communicated with.
During electromagnetic valve dead electricity on brake valve piece, electromagnetic valve is in upper station, running motor brake cylinder is cut off for oil circuit, the electromagnetic valve of brake cylinder inner fluid on brake valve piece flows to traveling pump, again through the case drain line oil sump tank of traveling pump, motor brake resets and realizes braking, while traveling pump and front, two hydraulic fluid ports that after running motor connects are by short circuit, and pilot operated valve device in brake valve piece is could open by the pressure of brake circuit, now brake oil flows back to fuel tank, brake circuit is interior without pressure, now pilot operated valve device spring reset is in lower station, the fluid of traveling pump output is now only through pilot operated valve device, and without front, after running motor, so the hydraulic fluid port of running motor is by short circuit before and after traveling pump connects, the flow through station below of pilot operated valve device of traveling pump output fluid is played circulation, prevent that hydraulic oil with pressure from entering in running gear fluid pressure line.
When there is dangerous situation in machine, manually control electromagnetic valve 5 dead electricity, now pilot operated valve device 4 is in station below, and short circuit traveling pump is connected hydraulic fluid port with front and back running motor, and machine returns at once and stops.And normal parking procedure need first kill engine, length consuming time, is unfavorable for urgent danger prevention.The effect of pilot operated valve device 4 is exactly short circuit traveling pump.
With reference to figure 1, the course of work of the present utility model is: when motor 1 starts, electromagnetic valve 5 obtains electric, the slippage pump 12 output hydraulic pressure oil electromagnetic valve 5 of flowing through enters the rod chamber of front running motor 7 and after running motor 9 brake cylinders, on running motor, normally closed type clutch is opened, fluid enters the series connection oil circuit between front running motor 7 and after running motor 9 through one way valve 8 simultaneously, pilot operated valve device 4 work simultaneously, oil circuit by pilot operated valve device is cut off, at this moment swash plate angle that can manual adjustments traveling pump 2, make its output fluid enter front running motor 7 and after running motor 9, stroke cycle, motor walking, road roller starts compacting operation, velocity magnitude is determined by traveling pump 2 swash plate angle of inclination sizes.While running into emergency situation in road roller operation process, need Quick brake, driver claps eye-catching electric button by pressing, make electromagnetic valve 5 dead electricity, now slippage pump 9 output fluid are without electromagnetic valve 5 and pilot operated valve device 4, the fluid one way valve 8 of only flowing through enters the series connection oil circuit between front running motor 7 and after running motor 9, pressure oil simultaneously in running motor 7 and after running motor 9 brake cylinders is through electromagnetic valve 5 and traveling pump 2 oil sump tanks, on running motor, normally closed type clutch is closed, has realized fast, has braked stably.No matter which kind of duty electromagnetism 5 is, slippage pump 12 is always two running motors series connection oil pipe fuel feeding, and the flow through loss of previous motor of supplementary fluid, guarantees that the rotating speed of two running motors is consistent, and then guarantee the stable consolidation effect of road roller.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification, change and equivalent structure transformation of above embodiment being done according to the utility model technical spirit, all still belongs in the protection domain of technical solutions of the utility model.
Claims (5)
1. dual-steel wheel road roller walking hydraulic control system, comprise motor (1), traveling pump (2), brake valve piece (3), flushing valve (6), front running motor (7), one way valve (8), after running motor (9), described traveling pump (2) comprises variable pump (13) and slippage pump (12); Described traveling pump (2) is connected with motor (1), it is characterized in that, described brake valve piece (3) is comprised of pilot operated valve device (4) and electromagnetic valve (5), the oil transportation mouth of described slippage pump (12) is divided into two-way, leads up to pipeline one and individual event valve (8) to enter the series connection oil circuit between front running motor (7) and after running motor (9); Separately leading up to electromagnetic valve (5), pipeline two enters the rod chamber of front running motor (7) and after running motor (9) brake cylinder; Described pipeline two forms closed-loop path by pilot operated valve device (4) and variable pump (13) and is communicated with.
2. a kind of dual-steel wheel road roller walking hydraulic control system according to claim 1, is characterized in that, described pilot operated valve device (4) is two-position two-way hydraulic control reversal valve.
3. a kind of dual-steel wheel road roller walking hydraulic control system according to claim 1, is characterized in that, described electromagnetic valve (5) is two position, three-way electromagnetic change valve, controls the dead electricity that obtains of electromagnetic valve (5) by electric button.
4. a kind of dual-steel wheel road roller walking hydraulic control system according to claim 1, is characterized in that, described traveling pump (2) is manual bidirectional Variable plunger pump.
5. a kind of dual-steel wheel road roller walking hydraulic control system according to claim 1, is characterized in that, described front running motor (7) and after running motor (9) are two-way quantitative motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690262.6U CN203514161U (en) | 2013-11-04 | 2013-11-04 | Hydraulic traveling control system of double-steel wheel road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690262.6U CN203514161U (en) | 2013-11-04 | 2013-11-04 | Hydraulic traveling control system of double-steel wheel road roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203514161U true CN203514161U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320690262.6U Expired - Lifetime CN203514161U (en) | 2013-11-04 | 2013-11-04 | Hydraulic traveling control system of double-steel wheel road roller |
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| Country | Link |
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| CN (1) | CN203514161U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622829A (en) * | 2017-03-26 | 2018-10-09 | 苏州智米高装备科技有限公司 | A kind of running gear with automatic repairing function |
| CN110285101A (en) * | 2019-07-31 | 2019-09-27 | 重庆维庆液压机械有限公司 | Intelligent parking lot hydraulic control system |
| CN110744999A (en) * | 2019-10-28 | 2020-02-04 | 韩国昊 | Hydraulic differential control system for vehicle |
-
2013
- 2013-11-04 CN CN201320690262.6U patent/CN203514161U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622829A (en) * | 2017-03-26 | 2018-10-09 | 苏州智米高装备科技有限公司 | A kind of running gear with automatic repairing function |
| CN110285101A (en) * | 2019-07-31 | 2019-09-27 | 重庆维庆液压机械有限公司 | Intelligent parking lot hydraulic control system |
| CN110744999A (en) * | 2019-10-28 | 2020-02-04 | 韩国昊 | Hydraulic differential control system for vehicle |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |