CN217873563U - Hydraulic damping device, damping device of underground scraper and underground scraper - Google Patents
Hydraulic damping device, damping device of underground scraper and underground scraper Download PDFInfo
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- CN217873563U CN217873563U CN202221069869.8U CN202221069869U CN217873563U CN 217873563 U CN217873563 U CN 217873563U CN 202221069869 U CN202221069869 U CN 202221069869U CN 217873563 U CN217873563 U CN 217873563U
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Abstract
The utility model discloses a hydraulic damping device, underground scraper's damping device and underground scraper belongs to engineering machine tool technical field. The hydraulic damping device comprises a hydraulic oil cylinder, an electromagnetic valve, an energy accumulator, a first hydraulic control one-way valve, a second hydraulic control one-way valve and an oil tank; the energy accumulator is connected with a rodless cavity of the hydraulic oil cylinder through a first hydraulic control one-way valve; a rod cavity of the hydraulic oil cylinder is connected with an oil tank through a second hydraulic control one-way valve; the electromagnetic valve is connected with the first hydraulic control one-way valve and the second hydraulic control one-way valve and is used for controlling the opening and closing of the two hydraulic control one-way valves; when the electromagnetic valve is electrified, the first hydraulic control one-way valve and the second hydraulic control one-way valve are opened, and the damping function is activated; when the electromagnetic valve is powered off, the first hydraulic control one-way valve and the second hydraulic control one-way valve are locked, and the damping function is closed. The damping device of the underground carry scraper and the underground carry scraper are both based on the hydraulic damping device. The utility model discloses can carry out hydraulic pressure to engineering machine and inhale shake to improve equipment's life and production efficiency.
Description
Technical Field
The utility model belongs to the technical field of engineering machine tool, concretely relates to hydraulic damping device, underground scraper's damping device and underground scraper.
Background
The conventional scraper has no damping system for the whole scraper, and all damping is dependent on tires. Because all the operating mechanisms of the scraper are in hard linkage, the vehicle body has no shock absorption function, and the shock absorption effect of the tire is limited. The working environment of the underground scraper is severe, and the underground scraper shakes violently due to poor road conditions in the running process, particularly when the bucket is fully loaded and the speed of the vehicle is high. The service life of the vehicle may be reduced due to severe vibration. Vibrations all have an influence on the structural part, hydraulic pressure spare, the electric part of vehicle, reduce the life of relevant part. The physical and psychological health of the operator can be affected by too much vibration or impact.
However, it can be found that in the field of engineering machinery, particularly in the technical field of excavators, there is a damping protection device for an excavator, for example, CN204199342U discloses a hydraulic control device for damping a boom of an excavator, which means that in the engineering machinery, a reasonable damping device can be provided to protect the machinery better.
SUMMERY OF THE UTILITY MODEL
The technical problem is as follows: the utility model provides a hydraulic damping system which effectively reduces the vibration of engineering machinery by means of hydraulic damping, and simultaneously provides a damping device for an underground scraper so as to reduce the vibration of the scraper; further, an underground scraper is provided.
The technical scheme is as follows: in a first aspect, the utility model discloses a hydraulic damping device, a serial communication port, include: the hydraulic oil cylinder, the electromagnetic valve, the energy accumulator, the first hydraulic control one-way valve, the second hydraulic control one-way valve and the oil tank are arranged;
the energy accumulator is connected with a rodless cavity of the hydraulic oil cylinder through a first hydraulic control one-way valve; the rod cavity of the hydraulic oil cylinder is connected with an oil tank through a second hydraulic control one-way valve;
the electromagnetic valve is connected with the first hydraulic control one-way valve and the second hydraulic control one-way valve and is used for controlling the opening and closing of the two hydraulic control one-way valves;
when the electromagnetic valve is electrified, the first hydraulic control one-way valve and the second hydraulic control one-way valve are opened, and the damping function is activated; when the electromagnetic valve is powered off, the first hydraulic control one-way valve and the second hydraulic control one-way valve are locked, and the damping function is closed.
Further, a shuttle valve is arranged between the first hydraulic control one-way valve and the second hydraulic control one-way valve; the port A of the shuttle valve is connected with the electromagnetic valve, the port P1 is connected with the first hydraulic control one-way valve, and the port P2 is connected with the second hydraulic control one-way valve.
Further, the solenoid valve is a two-position three-way normally closed reversing valve.
In a second aspect, the present invention provides a shock absorbing device for an underground scraper, including any of the hydraulic shock absorbing devices presented.
Furthermore, the hydraulic oil cylinder of the hydraulic damping device comprises a first lifting oil cylinder and a second lifting oil cylinder, and the two oil cylinders jointly drive the bucket of the scraper to work.
In a third aspect, the present invention provides an underground scraper, including the shock absorbing device of the above-mentioned underground scraper.
The utility model discloses when can be when equipment operation, through control solenoid valve, activation hydraulic pressure shock-absorbing function. When the electromagnetic valve is in a power-off state, the two hydraulic control one-way valves are in a locking state, a rod cavity and a rodless cavity of the hydraulic oil cylinder are in a locking state, oil liquid of the energy accumulator cannot enter the hydraulic oil cylinder, and a hydraulic damping function is not activated; when the electromagnetic valve is in a power-on state, the two hydraulic control one-way valves are in an open state, the rod cavity of the hydraulic oil cylinder is communicated with the oil tank, the rodless cavity of the hydraulic oil cylinder is communicated with the energy accumulator, and high-pressure oil in the energy accumulator enters the rodless cavity of the hydraulic oil cylinder, so that the hydraulic damping function is activated. In the operation process of the equipment, the pressure of the energy accumulator changes along with the change of the load, so that the functions of hydraulic energy absorption and shock absorption can be realized. When the shock absorption device is applied to the underground scraper, the hydraulic shock absorption can be effectively carried out on the scraper. Compared with the prior art, the vibration of the vehicle in the running process can be reduced, the service lives of the structural member, the hydraulic member and the electric member are longer, the maintenance cost is reduced, the safety of equipment is enhanced, the comfort of operation is improved, and the working efficiency is improved.
Drawings
Fig. 1 is a hydraulic schematic diagram of a hydraulic shock absorbing device.
The figure shows that: 1. a hydraulic cylinder; 2. a first lift cylinder; 3. a second lift cylinder; 4. an electromagnetic valve; 5. a first hydraulic control check valve; 6. a second hydraulic control check valve; 7. a shuttle valve; 8. an oil tank; 9. an accumulator; 10. a hydraulic damping device; 11. a first oil passage; 12. and a second oil passage.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings. It is noted that the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as limiting in number or nature. In order to better explain the solution of the present application, the following is a brief description of the working principle of the main hydraulic components involved in the hydraulic shock absorbing device:
a hydraulic control one-way valve: the pilot operated check valve is a valve which can make the check valve reversely flow by controlling the fluid pressure. The hydraulic control one-way valve is different from a common one-way valve in that a control oil way is added, when the control oil way is not communicated with pressure oil, the hydraulic control one-way valve works like the common one-way valve, and the pressure oil only flows to an oil outlet from an oil inlet and cannot reversely flow. When control pressure is input into the control oil path, the piston ejector rod moves rightwards under the action of pressure oil, and the ejector rod is used for jacking the one-way valve to connect the oil inlet and the oil outlet; if the oil outlet is larger than the oil inlet, the oil can flow reversely.
An energy accumulator: an accumulator is an energy storage device in a hydraulic system. The energy in the system is converted into compression energy or potential energy to be stored at a proper time, and when the system needs the energy, the compression energy or the potential energy is converted into hydraulic energy or air pressure and the like to be released, so that the energy is supplied to the system again. When the system pressure is increased instantaneously, it can absorb the energy of the part to ensure the pressure of the whole system is normal. Since hydraulic oil is incompressible liquid, it is impossible to accumulate pressure energy by using hydraulic oil, and it is necessary to convert and accumulate pressure energy by using other media. For example, a bellows-type charge accumulator developed by utilizing the compressible nature of gas (nitrogen) is a device for accumulating hydraulic oil. The leather bag type energy accumulator consists of an oil part and a gas part with an airtight sealing piece, and oil positioned around the leather bag is communicated with an oil circuit. When the pressure rises, oil enters the energy accumulator, and gas is compressed until the pressure of a system pipeline does not rise any more; when the pressure of the pipeline drops, the compressed air expands to press the oil into the loop, so that the pressure drop of the pipeline is relieved.
A shuttle valve: in a typical structure, the shuttle valve has two oil inlets, namely P1 and P2, a working port A and a valve core in the middle, and the shuttle valve plays the role of a one-way valve. The shuttle valve is used for pressure selection, no matter which oil inlet has high pressure, the working port can ensure that the pressure of an oil outlet is the same as that of the oil inlet, and a control oil way is led out between two main oil ways which are usually used for alternative pressure. The working process of the hydraulic valve is that when the pressure of the port P2 is high, the force of the port P2 acting on the middle valve core is larger than the force of the port P1 acting on the middle valve core, the valve core is pushed to the side of the port P1, the inlet of the port P1 is blocked, the hydraulic oil of the port P2 flows to the port A, the pressure of the port P2 is equal to the pressure of the port A, on the contrary, when the pressure valve of the port P1 is high, the port P2 is blocked by the valve core, the pressure of the port A is equal to the pressure of the port P1, and in short, the pressure of the port A is always the same as the pressure of the ports P1 and P2 which are higher.
Fig. 1 shows a schematic diagram of a hydraulic damping device according to the present invention. As shown in fig. 1, in this example, the hydraulic damping device 10 includes a hydraulic oil cylinder 1, an electromagnetic valve 4, an accumulator 9, a first pilot-controlled check valve 5, a second pilot-controlled check valve 6 and an oil tank 8; wherein, the energy accumulator 9 is connected with a rodless cavity of the hydraulic oil cylinder 1 through the first hydraulic control one-way valve 5; the rod cavity of the hydraulic oil cylinder 1 is connected with an oil tank 8 through a second hydraulic control one-way valve 6. As shown in fig. 1, an outlet of the accumulator 9 is connected to an inlet of the first pilot-controlled check valve 5, an outlet of the first pilot-controlled check valve 5 is connected to a rodless cavity of the hydraulic cylinder 1 through a first oil path 11, wherein the first oil path 11 is an oil inlet path of the rodless cavity of the hydraulic cylinder. The rod cavity of the hydraulic oil cylinder 1 is connected with the outlet of the second hydraulic control one-way valve 6 through a second oil path 12, the inlet of the second hydraulic control one-way valve 6 is connected with the oil tank 8, and the second oil path 12 is an oil outlet oil path of the rod cavity of the hydraulic oil cylinder. The damping function of the hydraulic device is mainly achieved by the accumulator 9, and the principle of the accumulator 9 has been explained above. When the hydraulic energy-absorbing shock-absorbing hydraulic energy accumulator is applied to underground scrapers and other equipment, the pressure of the energy accumulator 9 changes along with the change of the load in the running process of a vehicle, so that the functions of hydraulic energy absorption and shock absorption are realized.
The electromagnetic valve is used for controlling the opening and closing of the hydraulic damping function, and therefore the electromagnetic valve 4 is connected with the first hydraulic control one-way valve 5 and the second hydraulic control one-way valve 6, specifically connected with the control oil ports of the first hydraulic control one-way valve 5 and the second hydraulic control one-way valve 6 and used for controlling the opening of the two hydraulic control one-way valves. The working principle of the pilot operated check valve is described in detail above and will not be described again. In the preferred embodiment of the present invention, the solenoid valve 4 is a two-position three-way normally closed solenoid valve, i.e. a normally closed solenoid valve, which means that the oil path is not open when the solenoid valve is not energized. When the electromagnetic valve 4 is electrified, the first hydraulic control one-way valve 5 and the second hydraulic control one-way valve 6 are opened, and the damping function is activated; when the electromagnetic valve 4 is powered off, the first hydraulic control one-way valve 5 and the second hydraulic control one-way valve 6 are locked, and the damping function is closed.
Combine the principle, it is right the utility model discloses an effect explains, when the equipment operation, can pass through control solenoid 4, activation hydraulic pressure shock-absorbing function. When the electromagnetic valve 4 is in a power-off state, the two hydraulic control one-way valves are in a locking state, the rod cavity and the rodless cavity of the hydraulic oil cylinder 1 are in a locking state, oil liquid of the energy accumulator 9 cannot enter the hydraulic oil cylinder 1, and the hydraulic damping function is not activated; when the electromagnetic valve 4 is in a power-on state, the two hydraulic control one-way valves are in an open state, the rod cavity of the hydraulic oil cylinder 1 is communicated with the oil tank 8, the rodless cavity of the hydraulic oil cylinder 1 is communicated with the energy accumulator 9, and high-pressure oil in the energy accumulator 9 enters the rodless cavity of the hydraulic oil cylinder 1, so that the hydraulic damping function is activated. In the operation process of the equipment, the pressure of the energy accumulator 9 changes along with the change of the load, so that the functions of hydraulic energy absorption and shock absorption can be realized.
In the embodiment, a shuttle valve 7 is arranged between the first hydraulic control one-way valve 5 and the second hydraulic control one-way valve 6; the A port of the shuttle valve 7 is connected with the electromagnetic valve 4, the P1 port is connected with the first hydraulic control one-way valve 5, and the P2 port is connected with the second hydraulic control one-way valve 6. The operating principle of the shuttle valve 7 is described in detail above and will not be described in detail here. The shuttle valve 7 here mainly functions as a pressure-retaining lock valve.
Further, in an embodiment of the present invention, there is provided a damping device for an underground carrying scraper, which is applied to the underground carrying scraper with the above-mentioned hydraulic damping device 10, so that the damping device for the carrying scraper includes the above-mentioned hydraulic damping device 10. For an underground scraper, the vibration during the scraping process is mainly considered, so the hydraulic oil cylinder 1 of the hydraulic shock absorption device 10 is a lifting oil cylinder of the scraper and can drive a bucket to work. The underground scraper generally comprises two lifting cylinders, namely a first lifting cylinder 2 and a second lifting cylinder 3, which together drive a bucket to work. When the shock absorbing device of the underground scraper is applied to the underground scraper, the shock absorption of the underground scraper can be realized according to the above principle with respect to the hydraulic shock absorbing device 10.
Further, the underground scraper comprises the damping device of the underground scraper, and the underground scraper reduces vibration through hydraulic energy absorption in the operation process, so that the vehicle runs more stably, and the driving comfort is effectively improved. The reduction of vibrations, the life of the part that increases, reduction in production cost improves production efficiency.
The above-described embodiments are only preferred embodiments of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several modifications and equivalent substitutions can be made, and these modifications and equivalent substitutions do not fall into the scope of the present invention.
Claims (6)
1. A hydraulic damping device, comprising: the hydraulic oil cylinder (1), the electromagnetic valve (4), the energy accumulator (9), the first hydraulic control one-way valve (5), the second hydraulic control one-way valve (6) and the oil tank (8);
the energy accumulator (9) is connected with a rodless cavity of the hydraulic oil cylinder (1) through a first hydraulic control one-way valve (5); a rod cavity of the hydraulic oil cylinder (1) is connected with an oil tank (8) through a second hydraulic control one-way valve (6);
the electromagnetic valve (4) is connected with the first hydraulic control one-way valve (5) and the second hydraulic control one-way valve (6) and used for controlling the opening and closing of the two hydraulic control one-way valves.
2. The hydraulic damping device according to claim 1, characterized in that a shuttle valve (7) is arranged between the first hydraulically controlled one-way valve (5) and the second hydraulically controlled one-way valve (6); an opening A of the shuttle valve (7) is connected with the electromagnetic valve (4), an opening P1 is connected with the first hydraulic control one-way valve (5), and an opening P2 is connected with the second hydraulic control one-way valve (6).
3. The hydraulic damping device according to claim 1, characterized in that the solenoid valve (4) is a two-position three-way normally closed reversing valve.
4. A shock absorbing device of an underground scraper, characterized in that it comprises a hydraulic shock absorbing device (10) according to any one of claims 1-3.
5. A shock absorbing device of an underground scraper according to claim 4, characterized in that the hydraulic ram (1) of the hydraulic shock absorbing device (10) comprises a first lifting cylinder (2) and a second lifting cylinder (3), both cylinders jointly driving the bucket of the scraper.
6. An underground scraper comprising the shock absorbing device of any one of claims 4 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221069869.8U CN217873563U (en) | 2022-05-06 | 2022-05-06 | Hydraulic damping device, damping device of underground scraper and underground scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221069869.8U CN217873563U (en) | 2022-05-06 | 2022-05-06 | Hydraulic damping device, damping device of underground scraper and underground scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217873563U true CN217873563U (en) | 2022-11-22 |
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ID=84088942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221069869.8U Active CN217873563U (en) | 2022-05-06 | 2022-05-06 | Hydraulic damping device, damping device of underground scraper and underground scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217873563U (en) |
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2022
- 2022-05-06 CN CN202221069869.8U patent/CN217873563U/en active Active
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