CN216382017U - Anti-impact hydraulic loop system for starting and stopping air compressor - Google Patents
Anti-impact hydraulic loop system for starting and stopping air compressor Download PDFInfo
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- CN216382017U CN216382017U CN202122931449.8U CN202122931449U CN216382017U CN 216382017 U CN216382017 U CN 216382017U CN 202122931449 U CN202122931449 U CN 202122931449U CN 216382017 U CN216382017 U CN 216382017U
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Abstract
An air compressor start-stop impact-resistant hydraulic loop system comprises a hydraulic system oil source, a hydraulic oil tank, a hydraulic oil radiator, a proportional flow valve and a hydraulic motor, wherein the hydraulic system oil source provides power and flow for hydraulic oil; an oil supplementing oil way is connected between the second oil way and the third oil way, and an oil supplementing one-way valve is arranged on the oil supplementing oil way. When the air compressor is started or stopped, the current of the proportional electromagnet for controlling the proportional flow valve is slowly changed, so that the hydraulic motor can be prevented from being instantly started or stopped. When the proportional flow valve is closed, the oil supplementing one-way valve enables the outlet of the hydraulic motor to be in one-way communication with the inlet, and air-borne noise caused by idling of the hydraulic motor is avoided.
Description
Technical Field
The utility model belongs to the technical field of engineering machinery, and particularly relates to an anti-impact hydraulic circuit system for starting and stopping an air compressor.
Background
An air compressor is additionally added to meet the requirements of functions under the condition that an air source carried by the engineering vehicle cannot meet the requirements of use. The common air compressor driving methods include three types: electric motor drive, engine direct drive, hydraulic motor drive. The engineering vehicle serving as mobile equipment has limited self generated energy and cannot meet high-power electricity utilization; the direct driving of the engine of the engineering vehicle limits the installation position of the air compressor, so that the hydraulic motor is convenient to select as a driving mode. However, in the using process, the air compressor is required to be started and stopped continuously to cause larger impact on a hydraulic system, especially when the driving power of the air compressor is larger, the rotating speed of an engine of an engineering vehicle can be obviously changed, the hydraulic system of the whole vehicle is unstable, and the impact when the air compressor is started and stopped can be solved to greatly improve the hydraulic system of the whole vehicle.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the air compressor start-stop impact-prevention hydraulic loop system which is scientific in principle, simple in structure and capable of effectively improving the impact of the start-stop of the air compressor on the hydraulic system of the engineering vehicle.
In order to solve the technical problems, the utility model adopts the following technical scheme: the air compressor start-stop impact-resistant hydraulic loop system comprises a hydraulic system oil source, a hydraulic oil tank, a hydraulic oil radiator, a proportional flow valve and a hydraulic motor, wherein the hydraulic system oil source provides power and flow for hydraulic oil, an outlet of the hydraulic system oil source is connected with an inlet of the proportional flow valve through a first oil path, an outlet of the proportional flow valve is connected with an inlet of the hydraulic motor through a second oil path, an outlet of the hydraulic motor is connected with an inlet of the hydraulic oil radiator through a third oil path, an outlet of the hydraulic oil radiator is connected with the hydraulic oil tank through a fourth oil path, and an inlet of the hydraulic system oil source is connected with the hydraulic oil tank through a fifth oil path; an oil supplementing oil way is connected between the second oil way and the third oil way, and an oil supplementing one-way valve is arranged on the oil supplementing oil way.
The oil supplementing oil path adopts an aluminum alloy pipe, and the outer circle of the aluminum alloy pipe is provided with a radiating fin structure.
The hydraulic system oil source is a hydraulic oil pump.
By adopting the technical scheme, the hydraulic motor is used for driving the air compressor. The proportional flow valve has a pressure compensation function, so that the flow entering the hydraulic motor is kept stable and is not influenced by load change, and the impact on a hydraulic pipeline system caused by instantaneous start and stop of the hydraulic motor can be avoided by controlling the current of a proportional electromagnet of the proportional flow valve to slowly change when the air compressor is started or stopped. When the air compressor is started, the current of a proportional electromagnet for controlling the proportional flow valve is slowly increased, so that the hydraulic motor is slowly accelerated until the required rotating speed is reached. When the air pressure provided by the air compressor reaches a set value and the air compressor needs to stop, the proportional electromagnet of the proportional flow valve is controlled to slowly reduce the current of the proportional flow valve, the speed of the hydraulic motor is reduced until the hydraulic motor stops, when the proportional flow valve is completely closed, namely the hydraulic motor stops suddenly, because the oil supplementing one-way valve and the hydraulic motor form a parallel loop, the oil supplementing one-way valve enables the outlet to the inlet of the hydraulic motor to be in one-way conduction, a certain amount of hydraulic oil is conveyed to the inlet of the hydraulic motor, and air bite caused by idling of the hydraulic motor is avoided.
When the air compressor machine normally works, still have partly hydraulic oil and flow into the second oil circuit through mending the oil circuit by the third oil circuit, because mend the oil circuit and adopt aluminium alloy tube, the aluminium alloy tube excircle is equipped with radiating fin structure, mends the oil circuit and carries out certain heat dissipation to hydraulic oil to reduce hydraulic motor's operating temperature, prolong hydraulic motor's life.
Drawings
Fig. 1 is a schematic diagram of the principle of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the impact-proof hydraulic circuit system for starting and stopping an air compressor comprises a hydraulic system oil source 1, a hydraulic oil tank 2, a hydraulic oil radiator 3, a proportional flow valve 4 and a hydraulic motor 5, wherein the hydraulic system oil source 1 provides power and flow for hydraulic oil, an outlet of the hydraulic system oil source 1 is connected with an inlet of the proportional flow valve 4 through a first oil path 6, an outlet of the proportional flow valve 4 is connected with an inlet a of the hydraulic motor 5 through a second oil path 7, an outlet B of the hydraulic motor 5 is connected with an inlet of the hydraulic oil radiator 3 through a third oil path 8, an outlet of the hydraulic oil radiator 3 is connected with the hydraulic oil tank 2 through a fourth oil path 9, and an inlet of the hydraulic system oil source 1 is connected with the hydraulic oil tank 2 through a fifth oil path 10; an oil supplementing oil path 11 is connected between the second oil path 7 and the third oil path 8, an oil supplementing check valve 12 is arranged on the oil supplementing oil path 11, namely a V port of the oil supplementing check valve 12 is connected with an inlet A of the hydraulic motor 5, a C port of the oil supplementing check valve 12 is connected with an outlet B of the hydraulic motor 5, and the direction from the outlet B to the inlet A of the hydraulic motor 5 is guided and communicated through the oil supplementing oil path 11.
The oil supply circuit 11 is made of aluminum alloy pipe, and the outer circle of the aluminum alloy pipe is provided with a radiating fin structure (not shown).
The hydraulic system oil source 1 is a hydraulic oil pump.
The components of the present invention, such as pressure gauge, filter, various control valve sets, etc., are prior art and not shown.
The hydraulic motor 5 of the present invention is used to drive the air compressor. The proportional flow valve 4 has a pressure compensation function, so that the flow entering the hydraulic motor 5 is kept stable and is not influenced by load change, and the current of a proportional electromagnet for controlling the proportional flow valve 4 is slowly changed when the air compressor is started or stopped, so that the hydraulic motor 5 can be prevented from being instantly started or stopped. When the air compressor is started, the current of the proportional electromagnet for controlling the proportional flow valve 4 is slowly increased, so that the hydraulic motor 5 is slowly accelerated to the required rotating speed. When the air pressure provided by the air compressor reaches a set value and the air compressor needs to stop, the proportional electromagnet of the proportional flow valve 4 is controlled to slowly reduce the current of the proportional flow valve 4, the speed of the hydraulic motor 5 is reduced until the hydraulic motor 5 stops, when the proportional flow valve 4 is completely closed, namely the hydraulic motor 5 stops suddenly, because the oil supplementing one-way valve 12 and the hydraulic motor 5 form a parallel loop, the oil supplementing one-way valve 12 enables the outlet B to the inlet A of the hydraulic motor 5 to be in one-way conduction, a certain amount of hydraulic oil is conveyed to the inlet A of the hydraulic motor 5, gas bite caused by idling of the hydraulic motor 5 is avoided, and therefore impact on a hydraulic pipeline is greatly relieved.
When the air compressor machine normally works, still have partly hydraulic oil and flow into the second oil circuit through mend oil circuit 11 by the third oil circuit, because mend oil circuit 11 and adopt the aluminum alloy pipe, the aluminum alloy pipe excircle is equipped with the radiating fin structure, mend oil circuit 11 and carry out certain heat dissipation to hydraulic oil to reduce hydraulic motor 5's operating temperature, prolong hydraulic motor 5's life.
The components of the hydraulic system oil source 1, the hydraulic oil tank 2, the hydraulic oil radiator 3, the proportional flow valve 4, the hydraulic motor 5 and the like in the utility model are all the prior art and are commercially available, so the specific structure and principle are not repeated.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. Air compressor machine opens and stops protecting against shock hydraulic circuit system, its characterized in that: the hydraulic system comprises a hydraulic system oil source, a hydraulic oil tank, a hydraulic oil radiator, a proportional flow valve and a hydraulic motor, wherein the hydraulic system oil source provides power and flow for hydraulic oil, an outlet of the hydraulic system oil source is connected with an inlet of the proportional flow valve through a first oil path, an outlet of the proportional flow valve is connected with an inlet of the hydraulic motor through a second oil path, an outlet of the hydraulic motor is connected with an inlet of the hydraulic oil radiator through a third oil path, an outlet of the hydraulic oil radiator is connected with the hydraulic oil tank through a fourth oil path, and an inlet of the hydraulic system oil source is connected with the hydraulic oil tank through a fifth oil path; an oil supplementing oil way is connected between the second oil way and the third oil way, and an oil supplementing one-way valve is arranged on the oil supplementing oil way.
2. The air compressor start-stop impact-resistant hydraulic circuit system as claimed in claim 1, wherein: the oil supplementing oil path adopts an aluminum alloy pipe, and the outer circle of the aluminum alloy pipe is provided with a radiating fin structure.
3. The air compressor start-stop impact-resistant hydraulic circuit system as claimed in claim 1 or 2, wherein: the hydraulic system oil source is a hydraulic oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122931449.8U CN216382017U (en) | 2021-11-26 | 2021-11-26 | Anti-impact hydraulic loop system for starting and stopping air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122931449.8U CN216382017U (en) | 2021-11-26 | 2021-11-26 | Anti-impact hydraulic loop system for starting and stopping air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216382017U true CN216382017U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122931449.8U Active CN216382017U (en) | 2021-11-26 | 2021-11-26 | Anti-impact hydraulic loop system for starting and stopping air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216382017U (en) |
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2021
- 2021-11-26 CN CN202122931449.8U patent/CN216382017U/en active Active
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