CN215329193U - Open type hydraulic system for double-amplitude vibration and double-steel-wheel road roller - Google Patents
Open type hydraulic system for double-amplitude vibration and double-steel-wheel road roller Download PDFInfo
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- CN215329193U CN215329193U CN202121702693.0U CN202121702693U CN215329193U CN 215329193 U CN215329193 U CN 215329193U CN 202121702693 U CN202121702693 U CN 202121702693U CN 215329193 U CN215329193 U CN 215329193U
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Abstract
The utility model discloses an open hydraulic system for double-amplitude vibration and a double-steel-wheel road roller, which comprise an oil tank, a gear pump, a control valve group, a first gear motor and a second gear motor; the gear pump is respectively connected with the oil tank and the control valve group, and the control valve group is respectively connected with the first gear motor and the second gear motor; the control valve group comprises a first overflow valve, a second overflow valve, a third electromagnetic directional valve, a first electromagnetic directional valve, a second electromagnetic directional valve, a first one-way valve and a second one-way valve. The utility model adopts an open hydraulic system formed by connecting a single pump, a control valve group and double motors in series, realizes the single-wheel and double-wheel vibration and the switching between different amplitudes of the single-wheel and double-wheel vibratory roller by the reversing function of the control valve group, and has the characteristics of low system cost, high element control degree, small installation space, and simple and convenient operation.
Description
Technical Field
The utility model relates to an open hydraulic system for double-amplitude vibration and a double-steel-wheel road roller, belonging to the technical field of hydraulic pressure.
Background
The mainstream open type hydraulic vibration system used on the domestic and foreign double-steel-wheel road roller mainly comprises a gear pump, a motor and a vibration reversing valve, and can realize single-wheel independent vibration or double-wheel single-amplitude vibration. At present, the vibration of a double-steel-wheel vibratory roller in the industry for solving the problems of single-wheel vibration, double-wheel vibration and switching between different amplitudes mainly has the following scheme, but the schemes are incomplete, and are as follows:
1) the closed hydraulic vibration system consisting of the single plunger pump and the double plunger motors has high manufacturing cost, poor pollution resistance and high element failure rate;
2) the open type vibration hydraulic system composed of the double-gear pump, the double-control valve and the double-gear motor has strong dirt bearing capacity but is also quite expensive in manufacturing cost.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides an open hydraulic system for double-amplitude vibration and a double-steel-wheel road roller, which can realize the function of switching between single-double-wheel vibration and different amplitudes of a single-double-steel-wheel vibratory road roller.
In order to achieve the purpose, the open type hydraulic system for double amplitude vibration comprises an oil tank, a gear pump, a control valve group, a first gear motor and a second gear motor;
the gear pump is respectively connected with the oil tank and the control valve group, and the control valve group is respectively connected with the first gear motor and the second gear motor;
the control valve group comprises a first overflow valve, a second overflow valve, a third electromagnetic reversing valve, a first electromagnetic reversing valve, a second electromagnetic reversing valve, a first check valve and a second check valve, and an oil inlet of the control valve group is respectively connected with an oil inlet of the first overflow valve, an upper oil port of the third electromagnetic reversing valve and a middle oil port of the first electromagnetic reversing valve; the working oil port of the control valve group is respectively connected with the middle oil ports of the first electromagnetic reversing valve and the second electromagnetic reversing valve; and a middle oil port of the second electromagnetic directional valve is respectively connected with an upper oil port of the third electromagnetic directional valve, an oil inlet of the second overflow valve and an oil return port of the control valve group.
Furthermore, the gear pump is connected with the filter, and the filter is connected with the control valve group.
In addition, the utility model also provides a double-steel-wheel road roller, and the open type hydraulic system is installed on the double-steel-wheel road roller.
Compared with the prior art, the open type hydraulic system formed by connecting the single pump, the control valve group and the double motors in series is adopted, the single-wheel and double-wheel vibration and the switching between different amplitudes of the single-wheel and double-wheel vibratory roller are realized through the reversing function of the control valve group, and the open type hydraulic system has the characteristics of low system cost, high element control degree, small installation space and simplicity and convenience in operation.
Drawings
FIG. 1 is a schematic diagram of the principles of the present invention;
in the figure: 1. the oil tank comprises a gear pump 2, a gear pump 3, a filter 4, a control valve group 4.1, an overflow valve I, an overflow valve II, an electromagnetic directional valve III, an overflow valve II, an overflow valve 4.4, an electromagnetic directional valve I, an electromagnetic directional valve II, an electromagnetic directional valve 4.6, a one-way valve I, an electromagnetic directional valve 4.7, an electromagnetic directional valve II, an electromagnetic directional valve 5, a gear motor I, a gear motor 6 and a gear motor II.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, the open hydraulic system for double-amplitude vibration of a double-steel-wheel road roller comprises an oil tank 1, a gear pump 2, a filter 3, a control valve group 4, a first gear motor 5 and a second gear motor 6;
the oil tank 1 is connected with a gear pump 2, the gear pump 2 is connected with a filter 3, the filter 3 is connected with a control valve group 4, and the control valve group 4 is respectively connected with a gear motor I5 and a gear motor II 6;
the control valve group 4 comprises a first overflow valve 4.1, a second overflow valve 4.3, a third electromagnetic directional valve 4.2, a first electromagnetic directional valve 4.4, a second electromagnetic directional valve 4.5, a first check valve 4.6 and a second check valve 4.7; an oil inlet of the control valve group 4 is respectively connected with an oil inlet of the overflow valve I4.1, an upper oil port of the electromagnetic directional valve III 4.2 and a middle oil port of the electromagnetic directional valve I4.4; a working oil port A1/B1 of the control valve group 4 is connected with a middle oil port of a first electromagnetic directional valve 4.4, and a working oil port A2/B2 is connected with a middle oil port of a second electromagnetic directional valve 4.5; and a middle oil port of the second electromagnetic directional valve 4.5 is respectively connected with an upper oil port of the third electromagnetic directional valve 4.2, an oil inlet of the second overflow valve 4.3 and an oil return port of the control valve group 4.
When the oil-absorbing control valve group is used, the gear pump 2 absorbs oil from the oil tank 1 and enters a P port of the control valve group 4 through the filter 3, the oil enters the gear motor I5 and the gear motor II 6 through the reversing functions of the electromagnetic reversing valve III 4.2, the electromagnetic reversing valve I4.4 and the electromagnetic reversing valve II 4.5, the gear motor I and the gear motor II drive the working devices to rotate at a certain speed, vibration of the working devices can be achieved, and ports L1, L2, T1 and T2 of the control valve group 4 are respectively connected with the oil tank 1. In the vibration process, the switching functions of single vibration, double vibration and different amplitudes of the double-steel-wheel road roller are realized by adjusting the electromagnets Y1, Y2, Y3, Y4 and Y5 of the electromagnetic directional valve III 4.2, the electromagnetic directional valve I4.4 and the electromagnetic directional valve II 4.5; the first check valve 4.6 and the second check valve 4.7 can enable the working device to be rapidly quenched in the vibration stopping process.
The specific working process is as follows:
1) the first gear motor 5 and the second gear motor 6 do not rotate, and the working device does not vibrate: the electromagnets Y1, Y2, Y3, Y4 and Y5 are de-energized, and the electromagnetic directional valve is in an initial state; oil at the outlet of the gear pump 2 flows through the middle position of the first electromagnetic directional valve 4.4 and the upper position of the third electromagnetic directional valve 4.2 through the port P of the control valve group 4, and finally flows back to the oil tank 1 through the port T1.
The series-parallel connection relation of the oil ports of the control valve group is as follows: and a port P of the control valve group, a middle oil port of the first electromagnetic directional valve 4.4, an upper oil port of the third electromagnetic directional valve 4.2 and a port T1 are connected in series and are connected in parallel with an oil inlet of the first overflow valve 4.1.
2) The first gear motor 5 rotates, the second gear motor 6 does not rotate, and the corresponding working device singly vibrates: the electromagnet Y2/Y3 is electrified, and the electromagnets Y1, Y4 and Y5 are not electrified; oil at the outlet of the gear pump 2 enters the gear motor I5 from a port P of the control valve group 4 through a port A1/B1 at a left/right working position of the electromagnetic directional valve I4.4, so that the working device is driven to rotate to realize vibration, and simultaneously flows back to the oil tank 1 from a port T1 through the right/left position of the electromagnetic directional valve I4.4 and the upper position of the electromagnetic directional valve III 4.2; the power on and off of the electromagnets Y2 and Y3 can control oil to enter a gear motor I5 from an A1 port or a B1 port, so that the rotation direction of the working device is changed, and switching between different amplitudes is realized; the overflow valve I4.1 limits the highest pressure of the system under the working condition, and plays a role in safety protection.
The series-parallel connection relation of the oil ports of the control valve group is as follows: a control valve group P port, a left oil port (right) of a first electromagnetic directional valve 4.4, a gear motor I5, a right oil port (left) of the first electromagnetic directional valve 4.4, an upper oil port of a third electromagnetic directional valve 4.2 and a T1 port are connected in series and are connected in parallel with an oil inlet of a first overflow valve 4.1.
3) The gear motor II 6 rotates, the gear motor I5 does not rotate, and the corresponding working device singly vibrates: the electromagnets Y1 and Y4/Y5 are powered on, and the electromagnets Y2 and Y3 are powered off; oil at the outlet of the gear pump 2 enters a gear motor II 6 from a port P of a control valve group 4 through a middle position of a first electromagnetic directional valve 4.4, a lower position of a third electromagnetic directional valve 4.2, a left/right position of a second electromagnetic directional valve 4.5 and a port A2/B2, so that a working device is driven to rotate to realize vibration, and meanwhile, the oil flows back to the oil tank 1 from a port T2 through the right/left position of the second electromagnetic directional valve 4.5; the power on and off of the electromagnets Y4 and Y5 can control oil to enter a second gear motor 6 from A2 and B2, so that the rotation direction of the working device is changed, and switching between different amplitudes is realized; and the second overflow valve 4.3 limits the highest pressure of the system under the working condition, and plays a role in safety protection.
The series-parallel connection relation of the oil ports of the control valve group is as follows: the control valve group P port, the middle oil port of the first electromagnetic directional valve 4.4, the lower oil port of the third electromagnetic directional valve 4.2, the left oil port (right) of the second electromagnetic directional valve 4.5, the gear motor II 6, the right oil port (left) of the second electromagnetic directional valve 4.5 and the T2 port are connected in series and are connected in parallel with the oil inlets of the first overflow valve 4.1 and the second overflow valve 4.3.
4) The first gear motor 5 and the second gear motor 6 both rotate, and the corresponding working devices vibrate doubly: the electromagnets Y1, Y2/Y3 and Y4/Y5 are electrified, the lower position of the electromagnetic directional valve III 4.2, the left/right position of the electromagnetic directional valve I4.4 and the left/right position of the electromagnetic directional valve II 4.5 are in working positions; oil at the outlet of the gear pump 2 enters a gear motor I5 from a port P of a control valve group 4 through a port A1/B1 through a left/right position of an electromagnetic directional valve I4.4, then enters a gear motor II 6 from a port A2/B2 through a right/left position of the electromagnetic directional valve I4.4 and flows back to an oil tank through a port T2 through a right/left position of the electromagnetic directional valve II 4.5, and the highest working pressure of the system under the working condition is limited by the pressure of an overflow valve I4.1 and the pressure of an overflow valve II 4.3;
the series-parallel connection relation of the oil ports of the control valve group is as follows: the control valve group P port, the left (right) oil port of the first electromagnetic directional valve 4.4, the gear motor I5, the right (left) oil port of the first electromagnetic directional valve 4.4, the lower oil port of the third electromagnetic directional valve 4.2, the left (right) oil port of the second electromagnetic directional valve 4.5, the gear motor II 6, the right (left) oil port of the second electromagnetic directional valve 4.5 and the T2 port are connected in series and are connected in parallel with the oil inlets of the first overflow valve 4.1 and the second overflow valve 4.3.
5) The direction of oil entering the first gear motor 5 and the direction of oil entering the second gear motor 6 can be respectively controlled by controlling the power on/off of the electromagnets Y2/Y3 and Y4/Y5 so as to change the rotation direction of the motors and realize the switching between different amplitudes.
The utility model adopts an open hydraulic system formed by connecting a single pump, a control valve group and double motors in series, realizes the single-wheel and double-wheel vibration and the switching between different amplitudes of the single-wheel and double-wheel vibratory roller by the reversing function of the control valve group, and has the characteristics of low system cost, high element control degree, small installation space, and simple and convenient operation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. An open type hydraulic system for double amplitude vibration is characterized by comprising an oil tank (1), a gear pump (2), a control valve group (4), a first gear motor (5) and a second gear motor (6);
the gear pump (2) is respectively connected with the oil tank (1) and the control valve group (4), and the control valve group (4) is respectively connected with the gear motor I (5) and the gear motor II (6);
the control valve group (4) comprises a first overflow valve (4.1), a second overflow valve (4.3), a third electromagnetic directional valve (4.2), a first electromagnetic directional valve (4.4), a second electromagnetic directional valve (4.5), a first check valve (4.6) and a second check valve (4.7), and an oil inlet of the control valve group (4) is respectively connected with an oil inlet of the first overflow valve (4.1), an upper oil port of the third electromagnetic directional valve (4.2) and a middle oil port of the first electromagnetic directional valve (4.4); the working oil port of the control valve group (4) is respectively connected with the middle oil ports of the first electromagnetic directional valve (4.4) and the second electromagnetic directional valve (4.5); and a middle oil port of the second electromagnetic directional valve (4.5) is respectively connected with an upper oil port of the third electromagnetic directional valve (4.2), an oil inlet of the second overflow valve (4.3) and an oil return port of the control valve group (4).
2. Open hydraulic system for double amplitude vibrations according to claim 1, characterized in that the gear pump (2) is connected to a filter (3), the filter (3) being connected to a control valve block (4).
3. A double drum roller having an open hydraulic system as claimed in any one of claims 1 to 2 mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121702693.0U CN215329193U (en) | 2021-07-26 | 2021-07-26 | Open type hydraulic system for double-amplitude vibration and double-steel-wheel road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121702693.0U CN215329193U (en) | 2021-07-26 | 2021-07-26 | Open type hydraulic system for double-amplitude vibration and double-steel-wheel road roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215329193U true CN215329193U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121702693.0U Active CN215329193U (en) | 2021-07-26 | 2021-07-26 | Open type hydraulic system for double-amplitude vibration and double-steel-wheel road roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215329193U (en) |
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2021
- 2021-07-26 CN CN202121702693.0U patent/CN215329193U/en active Active
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