CN1222609A - Hydraulic drive system for towed vibrating road roller - Google Patents
Hydraulic drive system for towed vibrating road roller Download PDFInfo
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- CN1222609A CN1222609A CN 98113032 CN98113032A CN1222609A CN 1222609 A CN1222609 A CN 1222609A CN 98113032 CN98113032 CN 98113032 CN 98113032 A CN98113032 A CN 98113032A CN 1222609 A CN1222609 A CN 1222609A
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Abstract
In the hydraulic drive system, the hydraulic pump driven by the engine drives two hydraulic motors connected parallelly, and the hydraulic motors drive the eccentric shaft to operate the vibrating wheel. The hydraulic motors are controlled through a two-position fourway overflow valve and the accelerator of the engine is controlled automatically by means of pulling spring, pulling rod, throttling valve and single-action cylinder to synchronize the engine and the hydraulic motors. Compared with available technology, the present invention has the features of simple structure, easy manufacture and maintenance and easy operation. The vibration of the vibrating wheel acts directly on the frame and this results in high working efficiency and long service life.
Description
The invention belongs to road roller Hydraulic Power Transmission System technical field, particularly towed vibratory roller.
Towed vibratory roller is towing vehicle such as a kind of dependence bulldozer traction walking, relies on self power set to drive the vibration eccentric shaft and produces exciting force and the vibratile compacter of compacting soil.Towed vibratory roller is made up of frame and vibrating wheels two parts except that towing vehicle on the whole.The eccentric vibrating shaft at vibrating wheels center makes vibrating wheels produce the non-directional vibration and compacting soil by rotating generation centrifugal force.Vibration for fear of vibrating wheels directly passes in frame, makes frame keep inactive state as far as possible, connects to come vibration isolation by shock absorber between frame and the vibrating wheels.Frame keeps the effect of inactive state to be: one, can avoid being installed on that devices such as motor on the frame are vibrated and destroyed; Its two, the dead weight amount that can make frame effectively by damper action in vibrating wheels, with the dead weight amount of vibrating wheels and the dynamic exciting force stack of generation thereof, produce good consolidation effect; Its three, the vibration that can avoid frame produces many adverse consequences by the towing vehicle that the traction hook is transmitted to the place ahead.And existing towed vibratory roller mostly is machine driving.Its kind of drive is: mobilization force is divided in motor → clutch → first order drive pulley → first order belt → first order negative pulley wheel → power transmission shaft → both sides, each second level drive pulley → each second level belt → each second level negative pulley wheel → vibration eccentric shaft of both sides, shunting back.Adopt this mechanically operated major defect to be: 1. multistage many group belt transmission, processing, sealing, lubricating requirement height such as the main negative pulley wheel of belts at different levels, regulating wheel, power transmission shaft, complex structure is made difficulty; 2. engage power by mechanical clutch, method is original, operation inconvenience, and belt in use fatiguability lost efficacy, and changed difficulty and expense height; 3. since power transmission shaft and each second level drive pulley be installed on the frame, each second level negative pulley wheel is installed on the vibrating wheels, be subjected to the effect of contraction of belt, the vibration of vibrating wheels is transmitted to causes frame vibration on the frame, bring a series of above-mentioned inevitable adverse consequences thus, make the towed vibratory roller can't the good water-cooled engine of dependability, because its water tank can not be shaken, even use blower cooled engine also to be easy to be damaged; 4. the radial pull of second level belt transmission generation acts on the block bearing of vibration eccentric shaft, and its stress is deteriorated significantly, and reduce application life greatly, changes difficulty because of it, brings very big inconvenience to maintenance; 5. because can only use blower cooled engine, and blower cooled engine rated speed height, reliability is low relatively, frame vibration in addition, and the belt radial load easily makes damage of bearings.The result of this several respects comprehensive function makes mechanical towed vibratory roller can only keep work with little throttle, the slow-speed of revolution, small vibration power in actual use, production efficiency is lower, even make large-tonnage towed vibratory roller functional reliability extreme difference more than 18 tons, failure-frequency is very high, almost can't work.
At the shortcoming that exists in the prior art, the Hydraulic Power Transmission System that the purpose of this invention is to provide a kind of towed vibratory roller, can make road roller designs simplification, easy to manufacture, easy to maintenance, reduce manufacturing cost and cost of use, improve its power performance and operation convenience; The more important thing is and can effectively avoid the vibration of vibrating wheels directly to pass, and make frame keep inactive state to greatest extent in frame, thus the application life and the production efficiency of raising equipment.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes in the following way.The design feature of the Hydraulic Power Transmission System of towed vibratory roller is: directly drive hydraulic pump by motor, from the fuel tank oil suction, the pressure oil of hydraulic pump is through two hydraulic motors that are connected in parallel of shunting rear drive through the oil suction oil filter; Each hydraulic motor drives eccentric shaft by set spline housing symmetry in the rotating shaft and makes vibrating wheels work; The oil return of each hydraulic motor is through oil return oil filter, radiator oil sump tank; The rotation of two hydraulic motors or stall are controlled by the two-position four-way overflow valve that is attempted by in the hydraulic circuit; The throttle of motor is realized control automatically by set throttle extension spring, accelerator rod, choke valve and one-way cylinder; Choke valve is serially connected between the oil-in of the oil-out of hydraulic pump and one-way cylinder; One end of one-way cylinder is fixed, and the other end and a fixing throttle extension spring and an accelerator rod link together, and accelerator rod can be controlled the throttle open amount of motor; When the hydraulic system build-up pressure, system pressure is by entering in the one-way cylinder by choke valve, one-way cylinder affects throttle extension spring and accelerator rod to make the synchronization of motor and each hydraulic motor bring up to the maximum duty that throttle is set up, when the hydraulic system drain charge, throttle extension spring pulling accelerator rod and one-way cylinder return make the synchronization of motor and each hydraulic motor drop to idling operation.
According to above-mentioned technical scheme, described motor is the water-cooled diesel engine.
Use the towed vibratory roller of Hydraulic Power Transmission System of the present invention to compare with prior art, have following characteristics: 1. vibrate eccentric shaft and drive by two hydraulic motor bilateral symmetry pure torsions, avoided the additional forces of the radial pull of belt generation, improved the application life and the functional reliability of bearing greatly bearing; 2. no mechanical effect of contraction between frame and the vibrating wheels can guarantee that the parts of installing on the frame such as motor are not subjected to flutter failure by shock absorber to the effective vibration isolation of frame, makes the water-cooled engine that towed vibratory roller can dependability be good, noise is low; Simultaneously, because frame and vibrating wheels motor coordination can make road roller produce good consolidation effect, improve operating efficiency, next guarantees that tractor is not vibrated; 3. can realize far distance controlled, make easy to operate, freely; Tractor driver direct open and close two-position four-way overflow valve in driver's cabin can realize that opening of road roller shake, quicken or failure of oscillation, deceleration; 4. hydraulic transmission is simple in structure, the manufacturing installation and maintenance are convenient, noise is low, reduced manufacturing cost and cost of use; 5. transmission system does not have the moving component of outer exposed, has brought the safety and the psychological sense of security to the operator, particularly implements impayable advantage on the large-tonnage towed vibratory roller.
The present invention is further illustrated below in conjunction with accompanying drawing and concrete embodiment.
Accompanying drawing 1 is a Hydraulic Power Transmission System structure principle chart of the present invention.
Referring to accompanying drawing, the Hydraulic Power Transmission System of towed vibratory roller, it is to be that motor 1 directly drives the duplicate gear hydraulic pumps 3 that two discharge capacities equate with the water-cooled diesel engine, after filtration density be 50 μ oil suction oil filters 2 from the fuel tank oil suction, the pressure oil of duplicate gear hydraulic pump 3 through the interflow, shunting rear drive two gear type motors that are connected in parallel 5.Each hydraulic motor 5 drives eccentric shaft 7 by set spline housing 6 symmetries in the rotating shaft and makes vibrating wheels work.The oil return of each hydraulic motor 5 density after filtration is 10 μ oil return oil filters 8, radiator 9 oil sump tanks.The rotation of two hydraulic motors 5 or stall are controlled by the two-position four-way electromagnetic relief valve 4 that is attempted by in the hydraulic circuit.The throttle of motor 1 is by set throttle extension spring 13, accelerator rod 12, and choke valve 11 and one-way cylinder 10 are realized control automatically.Adjustable choke valve 11 is serially connected between the oil-in of the oil-out of hydraulic pump 3 and one-way cylinder 10, is used to regulate the throttle pulling speed of motor 1.One end of one-way cylinder 10 is fixed, and the other end and fixing throttle extension spring 13 and accelerator rod 12 link together, and accelerator rod 12 can be controlled the throttle open amount of motor 1.When the hydraulic system build-up pressure, system pressure oil enters in the one-way cylinder 10 by choke valve 11, and one-way cylinder 10 affects throttle extension spring 13 and accelerator rod 12 to make the motor 1 and the synchronization of each hydraulic motor 5 bring up to the maximum duty that throttle is set up.When the hydraulic system drain charge, throttle extension spring 13 pulling accelerator rod 12 and one-way cylinder 10 returns make the motor 1 and the synchronization of each hydraulic motor 5 drop to idling operation.
Use method of the present invention very simple, only need set up hydraulic power unit according to the foregoing description on towed roller, the gauge tap of two-position four-way electromagnetic relief valve 4 is placed in the control room, all the other each Hydraulic Elements get final product by the position that can reach function is in place.
Certainly, can use electromagnetic relief valve 4 instead according to the foregoing description and be electro-hydraulic reversing valve or hand-operated direction valve; It is a Variable plunger pump that the gear pump that two discharge capacities of hydraulic pump 3 equate is used instead, and it is the quantitative piston motor that two discharge capacities equate that the gear motor that two discharge capacities of hydraulic motor 5 equate is used instead; Hydraulic circuit used instead be closed circuit.Suchlike technical scheme all belongs to protection scope of the present invention.
Claims (6)
1. the Hydraulic Power Transmission System of a towed vibratory roller, it is characterized in that, directly drive hydraulic pump (3) by motor (1), through oil suction oil filter (2) from the fuel tank oil suction, the pressure oil of hydraulic pump (3) is through shunting two hydraulic motors that are connected in parallel of rear drive (5), each hydraulic motor drives eccentric shaft (7) by set spline housing (6) symmetry in the rotating shaft and makes vibrating wheels work, and the oil return of each hydraulic motor is through oil return oil filter (8), radiator (9) oil sump tank; The rotation of two hydraulic motors (5) or stall are controlled by the two-position four-way overflow valve (4) that is attempted by in the hydraulic circuit; The throttle of motor (1) is by set throttle extension spring (13), accelerator rod (12), choke valve (11) and one-way cylinder (10) are realized control automatically, choke valve is serially connected between the oil-in of the oil-out of hydraulic pump (3) and one-way cylinder (10), one end of one-way cylinder (10) is fixed, the other end and fixing throttle extension spring (13) and accelerator rod (12) link together, accelerator rod can be controlled the throttle open amount of motor, when the hydraulic system build-up pressure, system pressure oil enters in the one-way cylinder (10) by choke valve (11), one-way cylinder (10) affects throttle extension spring (13) and accelerator rod (12) to make the synchronization of motor and each hydraulic motor (5) bring up to the maximum duty that throttle is set up, when the hydraulic system drain charge, throttle extension spring (13) pulling accelerator rod (12) and one-way cylinder (10) return make motor (1) and the synchronization of each hydraulic motor (5) drop to idling operation.
2. according to the described Hydraulic Power Transmission System of claim 1, it is characterized in that various electromagnetic relief valves, electro-hydraulic reversing valve or the hand-operated direction valve of described two-position four-way overflow valve (4) for having pressure oil drain charge function.
3. according to the described Hydraulic Power Transmission System of claim 2, it is characterized in that described hydraulic pump (3) is gear pump or 1 Variable plunger pump that two discharge capacities equate; Two hydraulic motors (5) are gear motor or the quantitative piston motor that two discharge capacities equate; Hydraulic circuit is open type or enclosed.
4. according to the described Hydraulic Power Transmission System of claim 3, it is characterized in that the filter densities of described oil suction oil filter (2) is 50 μ; The filter densities of oil return oil filter (8) is 10 μ.
5. according to the described Hydraulic Power Transmission System of claim 4, it is characterized in that described choke valve (7) is adjustable, be used to regulate the throttle pulling speed of motor (1).
6. according to each described Hydraulic Power Transmission System in the claim 1～5, it is characterized in that described motor (1) is the water-cooled diesel engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113032 CN1110605C (en) | 1998-12-01 | 1998-12-01 | Hydraulic drive system for towed vibrating road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113032 CN1110605C (en) | 1998-12-01 | 1998-12-01 | Hydraulic drive system for towed vibrating road roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1222609A true CN1222609A (en) | 1999-07-14 |
| CN1110605C CN1110605C (en) | 2003-06-04 |
Family
ID=5222817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98113032 Expired - Fee Related CN1110605C (en) | 1998-12-01 | 1998-12-01 | Hydraulic drive system for towed vibrating road roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1110605C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371107C (en) * | 2005-08-08 | 2008-02-27 | 西安重型机械研究所 | Vibrating device hydraulic system |
| CN100443190C (en) * | 2003-10-29 | 2008-12-17 | 株式会社小松制作所 | Crushing apparatus |
| CN101845786A (en) * | 2010-06-12 | 2010-09-29 | 无锡尚高工程机械有限公司 | Hydraulic two-way vibration flat plate punner |
| CN102066148A (en) * | 2008-06-19 | 2011-05-18 | 卡特彼勒路面机械公司 | Method and arrangement of a plurality of propel pumps in a hydrostatically driven compactor |
| CN102535570A (en) * | 2012-02-03 | 2012-07-04 | 山重建机(济宁)有限公司 | Electro-hydraulic integral control device for engine throttle of hydraulic digging machine |
| CN102704461A (en) * | 2012-07-07 | 2012-10-03 | 西安长大公路养护技术有限公司 | Intelligent continuous dynamic compaction machine |
| CN103485262A (en) * | 2013-09-30 | 2014-01-01 | 柳工无锡路面机械有限公司 | Road roller open type vibration system with automatic frequency adjustment and single and double vibration functions |
-
1998
- 1998-12-01 CN CN 98113032 patent/CN1110605C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443190C (en) * | 2003-10-29 | 2008-12-17 | 株式会社小松制作所 | Crushing apparatus |
| CN100371107C (en) * | 2005-08-08 | 2008-02-27 | 西安重型机械研究所 | Vibrating device hydraulic system |
| CN102066148A (en) * | 2008-06-19 | 2011-05-18 | 卡特彼勒路面机械公司 | Method and arrangement of a plurality of propel pumps in a hydrostatically driven compactor |
| CN102066148B (en) * | 2008-06-19 | 2013-07-17 | 卡特彼勒路面机械公司 | Method and arrangement of a plurality of propel pumps in a hydrostatically driven compactor |
| CN101845786A (en) * | 2010-06-12 | 2010-09-29 | 无锡尚高工程机械有限公司 | Hydraulic two-way vibration flat plate punner |
| CN102535570A (en) * | 2012-02-03 | 2012-07-04 | 山重建机(济宁)有限公司 | Electro-hydraulic integral control device for engine throttle of hydraulic digging machine |
| CN102704461A (en) * | 2012-07-07 | 2012-10-03 | 西安长大公路养护技术有限公司 | Intelligent continuous dynamic compaction machine |
| CN103485262A (en) * | 2013-09-30 | 2014-01-01 | 柳工无锡路面机械有限公司 | Road roller open type vibration system with automatic frequency adjustment and single and double vibration functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1110605C (en) | 2003-06-04 |
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