CN110670451B - Reversing valve group for open type vibration system of road roller - Google Patents
Reversing valve group for open type vibration system of road roller Download PDFInfo
- Publication number
- CN110670451B CN110670451B CN201911002955.XA CN201911002955A CN110670451B CN 110670451 B CN110670451 B CN 110670451B CN 201911002955 A CN201911002955 A CN 201911002955A CN 110670451 B CN110670451 B CN 110670451B
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- port
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- reversing
- oil
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- 238000005086 pumping Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
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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
-
- 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
- F15B13/027—Check valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention relates to a reversing valve group for an open type vibration system of a road roller, wherein a two-position four-way electromagnetic reversing valve, an adjustable overflow valve, a sequence valve, a first one-way valve, a second one-way valve and an electromagnetic reversing two-position stop valve are arranged in a valve block; the valve block is provided with P, T, A, B ports, wherein the P port is connected with a pumping pressure oil port, the T port is connected with an oil tank, and the A port and the B port are respectively connected with a working oil port of the gear motor; the four-way electromagnetic reversing valve comprises an A1 port, a B1 port, a P1 port, a T1 port and a T port, wherein the A1 port is connected with the A port, the B1 port is connected with the B port, the P1 port is connected with the P port, and the T1 port is connected with the T port; the first one-way valve is connected with the port A, the second one-way valve is connected with the port B, the first one-way valve and the second one-way valve are connected and connected with the port P2 of the sequence valve, and the port T2 of the sequence 4 is connected with the port T; the P2 port of the sequence valve is also connected with an electromagnetic reversing double-position stop valve, and the electromagnetic reversing double-position stop valve is connected with a T port. The invention changes the power through the reversing valve group, switches the flowing direction of oil liquid and changes the rotating direction of the motor.
Description
Technical Field
The invention relates to an open type vibration reversing valve of a road roller, in particular to a reversing valve set for an open type vibration system of the road roller, which is mainly used in road surface mechanical equipment.
Background
In the road surface machinery industry at present, for small-size vibratory roller or special vibratory roller, the vibration system generally adopts an open gear pump motor, so that the cost is low, the maintenance is simple, but because of being a common gear pump motor, the rotation direction of the gear motor can not be changed to achieve the free switching of large vibration/small vibration/stop vibration like a closed system.
Disclosure of Invention
The invention aims to overcome the defects and provide the reversing valve group for the open type vibration system of the road roller, which meets all functions of the original conventional vibration valve, realizes whether the motor rotates or not and drives the vibration wheel to vibrate; meanwhile, the power can be changed through the reversing valve group, the flowing direction of oil is switched, and the rotating direction of the motor is changed, so that the other working mode of the vibrating wheel is realized.
The purpose of the invention is realized in the following way:
the reversing valve group for the road roller open type vibration system is provided with a two-position four-way electromagnetic reversing valve, an adjustable overflow valve, a sequence valve, a first one-way valve, a second one-way valve and an electromagnetic reversing two-position stop valve; the valve block is provided with four ports P, T, A, B, wherein the port P is connected with a pumping pressure oil port, the port T is connected with an oil tank, and the port A and the port B are respectively connected with working oil ports of the gear motor;
An A1 port and an A port of the four-way electromagnetic reversing valve are connected, a B1 port and an B port are connected, a P1 port is connected with a P port, and a T1 port is connected with a T port; the first one-way valve is connected with the port A, the second one-way valve is connected with the port B, the first one-way valve and the second one-way valve are connected and connected with the port P2 of the sequence valve, and the port T2 of the sequence 4 is connected with the port T;
The P2 port of the sequence valve is also connected with the P3 port of the adjustable overflow valve, and the T3 port of the adjustable overflow valve is connected with the T port; the P2 port of the sequence valve is also connected with an electromagnetic reversing double-position stop valve, and the electromagnetic reversing double-position stop valve is connected with the T port.
A reversing valve group for an open type vibration system of a road roller is characterized in that one direction of an electromagnetic reversing double-position stop valve is provided with an adjustable flow hole.
Compared with the prior art, the invention has the beneficial effects that:
1. the start and stop of the gear motor are independently controlled by the stop valve, the start time is fastest within the element capacity range, and the stop time can be automatically adjusted according to requirements.
2. The invention changes the rotation direction of the motor in the open system by controlling the electromagnetic valve to be powered off.
3. The flow direction of the invention is independently controlled by the reversing valve, and meanwhile, the reversing valve can directly select an electric signal to control the direct-acting reversing valve without complex precise oil ways such as pilot pressure and valve groups as the reversing valve is not directly used under the condition of load, thereby simplifying the scheme.
4. The motor of the invention rotates in two directions and has pressure protection of the overflow valve, and shares one overflow valve, thereby having convenient setting and lower cost.
5. The overflow pressure of the main oil way is set by the secondary small-flow overflow valve, so that the cost is low and the volume is small.
6. The vibration system used in the invention has rapid vibration starting and vibration stopping time which can be adjusted to proper time through the stop valve.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein:
the electromagnetic reversing valve comprises a two-position four-way electromagnetic reversing valve 2, an adjustable overflow valve 3, a sequence valve 4, a first one-way valve 5.1, a second one-way valve 5.2 and an electromagnetic reversing two-position stop valve 6.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description will be made with reference to the accompanying drawings. It should be understood that the following embodiments are not intended to limit the embodiments of the present invention, but are merely examples of embodiments that may be employed by the present invention. It should be noted that, the description herein of the positional relationship of the components, such as the component a being located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram of a reversing valve set for an open vibration system of a road roller according to the present invention. As shown in the figure, the reversing valve group for the road roller open type vibration system is provided with a two-position four-way electromagnetic reversing valve 2, an adjustable overflow valve 3, a sequence valve 4, a first one-way valve 5.1, a second one-way valve 5.2 and an electromagnetic reversing two-position stop valve 6; the valve block is provided with four ports P, T, A, B, wherein the port P is connected with a pumping pressure oil port, the port T is connected with an oil tank, and the port A and the port B are respectively connected with working oil ports of the gear motor.
An A1 port (a first oil outlet) of the four-way electromagnetic reversing valve 2 is connected with the A port, a B1 port (a second oil outlet) is connected with the B port, a P1 port (an oil inlet) is connected with the P port, and a T1 port (an oil return port) is connected with the T port;
The first one-way valve 5.1 is connected with the port A, the second one-way valve 5.2 is connected with the port B, the first one-way valve 5.1 and the second one-way valve 5.2 are connected and connected with the port P2 (oil inlet) of the sequence valve 4, and the port T2 (oil return port) of the sequence valve 4 is connected with the port T;
The P2 port (oil inlet) of the sequence valve 4 is also connected with the P3 port (oil inlet) of the adjustable overflow valve 3, and the T3 port (oil return port) of the adjustable overflow valve 3 is connected with the T port; the P2 port (oil inlet) of the sequence valve 4 is also connected with an electromagnetic reversing double-position stop valve 6, and the electromagnetic reversing double-position stop valve 6 is connected with a T port.
One direction of the electromagnetic reversing double-position stop valve 6 is provided with an adjustable flow hole.
Working principle:
When the gear motor is not needed to work, the stop valve 6 is not electrified, so that the pressure of a pilot oil way above the sequence valve is zero; at the moment, the reversing valve 2 is electrified or not, pressure oil flowing through the gear pump flows back to the oil tank through the reversing valve 2, the one-way valve 5, the sequence valve 4 and the port T, at the moment, the motor does not rotate, and the vibrating wheel does not work.
When the stop valve 6 is powered on, the pressure of a pilot oil way of the sequence valve is increased, and oil from the P port cannot flow to an oil tank through a main oil way of the sequence valve 4;
If the reversing valve 2 is not electrified, the oil in the P port flows through the oil port B1 from the oil port 3 of the reversing valve, flows to the gear motor through the oil port B of the valve group, drives the motor to rotate in one direction, and flows to the oil tank from the oil port A of the valve group to the oil port A1 of the reversing valve 2 to the oil port T1 of the reversing valve 2 to the port T;
At this time, if the reversing valve 2 is powered on, the oil in port P flows from the oil port P1 of the reversing valve to the oil port A1, then flows to the gear motor through the oil port a of the valve group, and drives the motor to rotate in the other direction; the oil flows to the oil tank according to the valve group oil port B, the oil port B1 of the reversing valve 2, the oil port T1 of the reversing valve 2 and the port T.
The valve set can be used for vibration reversing amplitude modulation of an open vibratory roller, and can also be used for reversing in an open system to serve other functions.
The valve group realizes forward rotation, reverse rotation and stop of the motor in the open system, realizes reasonable reversing of the motor in the open system, and has the advantages of simple scheme, high cost performance and small volume. The turning direction of a motor in an open system is changed by controlling the electromagnetic valve to be powered off; the motor is accelerated at a maximum speed, and the motor speed is adjustable; the overflow pressure of the main oil way is set by a secondary small-flow overflow valve, so that the cost is low and the volume is small. The stop valve is used for controlling the start and stop of the motor, and even if the motor is used in a large-flow system, the reversing valve can be controlled by direct electrical signals, pilot oil pressure is not needed for controlling reversing, and the scheme is simplified.
The foregoing is merely a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the invention.
Claims (2)
1. The utility model provides a road roller open reversing valve group for vibration system which characterized in that: the valve block is internally provided with a two-position four-way electromagnetic reversing valve (2), an adjustable overflow valve (3), a sequence valve (4), a first one-way valve (5.1), a second one-way valve (5.2) and an electromagnetic reversing two-position stop valve (6); the valve block is provided with four ports P, T, A, B, wherein the port P is connected with a pumping pressure oil port, the port T is connected with an oil tank, and the port A and the port B are respectively connected with working oil ports of the gear motor;
An A1 port and an A port of the two-position four-way electromagnetic reversing valve (2) are connected, a B1 port is connected with a B port, a P1 port is connected with a P port, and a T1 port is connected with a T port; the first one-way valve (5.1) is connected with the port A, the second one-way valve (5.2) is connected with the port B, the first one-way valve (5.1) and the second one-way valve (5.2) are connected and connected with the port P2 of the sequence valve (4), and the port T2 of the sequence valve (4) is connected with the port T;
The P2 port of the sequence valve (4) is also connected with the P3 port of the adjustable overflow valve (3), and the T3 port of the adjustable overflow valve (3) is connected with the T port; the P2 port of the sequence valve (4) is also connected with an electromagnetic reversing double-position stop valve (6), and the electromagnetic reversing double-position stop valve (6) is connected with the T port.
2. The reversing valve set for an open vibration system of a road roller according to claim 1, wherein: one direction of the electromagnetic reversing double-position stop valve (6) is provided with an adjustable flow hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911002955.XA CN110670451B (en) | 2019-10-22 | 2019-10-22 | Reversing valve group for open type vibration system of road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911002955.XA CN110670451B (en) | 2019-10-22 | 2019-10-22 | Reversing valve group for open type vibration system of road roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110670451A CN110670451A (en) | 2020-01-10 |
| CN110670451B true CN110670451B (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911002955.XA Active CN110670451B (en) | 2019-10-22 | 2019-10-22 | Reversing valve group for open type vibration system of road roller |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01320303A (en) * | 1988-06-17 | 1989-12-26 | Yutani Heavy Ind Ltd | Hydraulic circuit and hydraulic change-over valve for hydraulic shovel |
| CN102963823A (en) * | 2012-11-15 | 2013-03-13 | 江苏威和重工有限公司 | Constant-tension pressure compensating control system |
| CN203420201U (en) * | 2013-07-13 | 2014-02-05 | 柳工无锡路面机械有限公司 | Control loop with vibration absorption function for open-type vibration system of vibratory roller |
| CN203892280U (en) * | 2014-06-09 | 2014-10-22 | 常州信息职业技术学院 | Electro-hydraulic proportional valve control system of combined machine tool |
| WO2015043377A1 (en) * | 2013-09-24 | 2015-04-02 | 三一汽车制造有限公司 | Auxiliary hydraulic system and concrete pumping device |
| CN105465077A (en) * | 2015-12-23 | 2016-04-06 | 武汉船用机械有限责任公司 | Hydraulic system of gear and rack lifting device |
| JP2017101791A (en) * | 2015-12-04 | 2017-06-08 | 日立建機株式会社 | Hydraulic motor control device |
| DE102017108645A1 (en) * | 2017-04-24 | 2018-10-25 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Fitting for fluid flow control |
| CN211142713U (en) * | 2019-10-22 | 2020-07-31 | 柳工无锡路面机械有限公司 | Road roller open type vibration valve capable of realizing vibration reversing and amplitude modulation |
-
2019
- 2019-10-22 CN CN201911002955.XA patent/CN110670451B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01320303A (en) * | 1988-06-17 | 1989-12-26 | Yutani Heavy Ind Ltd | Hydraulic circuit and hydraulic change-over valve for hydraulic shovel |
| CN102963823A (en) * | 2012-11-15 | 2013-03-13 | 江苏威和重工有限公司 | Constant-tension pressure compensating control system |
| CN203420201U (en) * | 2013-07-13 | 2014-02-05 | 柳工无锡路面机械有限公司 | Control loop with vibration absorption function for open-type vibration system of vibratory roller |
| WO2015043377A1 (en) * | 2013-09-24 | 2015-04-02 | 三一汽车制造有限公司 | Auxiliary hydraulic system and concrete pumping device |
| CN203892280U (en) * | 2014-06-09 | 2014-10-22 | 常州信息职业技术学院 | Electro-hydraulic proportional valve control system of combined machine tool |
| JP2017101791A (en) * | 2015-12-04 | 2017-06-08 | 日立建機株式会社 | Hydraulic motor control device |
| CN105465077A (en) * | 2015-12-23 | 2016-04-06 | 武汉船用机械有限责任公司 | Hydraulic system of gear and rack lifting device |
| DE102017108645A1 (en) * | 2017-04-24 | 2018-10-25 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Fitting for fluid flow control |
| CN211142713U (en) * | 2019-10-22 | 2020-07-31 | 柳工无锡路面机械有限公司 | Road roller open type vibration valve capable of realizing vibration reversing and amplitude modulation |
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| CN110670451A (en) | 2020-01-10 |
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