CN110966266A - Novel single-pump hydraulic control pumping system - Google Patents
Novel single-pump hydraulic control pumping system Download PDFInfo
- Publication number
- CN110966266A CN110966266A CN201911401294.8A CN201911401294A CN110966266A CN 110966266 A CN110966266 A CN 110966266A CN 201911401294 A CN201911401294 A CN 201911401294A CN 110966266 A CN110966266 A CN 110966266A
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- Prior art keywords
- cylinder
- valve
- hydraulic control
- tilt cylinder
- control valve
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Classifications
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- 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
- F15B13/022—Flow-dividers; Priority valves
-
- 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
- F15B13/024—Pressure relief valves
-
- 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
-
- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a novel single-pump hydraulic control pumping system which comprises a hydraulic oil tank, a plunger pump, a main cylinder and a tilt cylinder, wherein pressure oil output by the plunger pump is respectively input into a tilt cylinder control circuit and a main cylinder control circuit through a connecting pipeline; in the tilt cylinder control loop, pressure oil passes through a one-way valve and then is respectively input into an energy accumulator and a tilt cylinder connected with a tilt cylinder hydraulic control valve; the master cylinder hydraulic control valve is controlled to be reversed by the swing cylinder signal oil, and the swing cylinder hydraulic control valve is controlled to be reversed by the master cylinder signal oil; an electric control switching valve is connected between the main cylinder signal source and the tilt cylinder hydraulic control valve. The energy accumulator can absorb the peak pressure impact generated by the reversing of the main cylinder hydraulic control valve, and the stored pressure oil is used for pushing the full-stroke reversing of the tilt cylinder, so that the reversing of the tilt cylinder is separated from the influence of the reversing of the main cylinder, and the large-displacement pumping is free from impact, and the small-displacement pumping is free from reversing and pause.
Description
Technical Field
The invention belongs to the technical field of concrete pump trucks, and particularly relates to a novel single-pump hydraulic control pumping system.
Background
The pumping system sucks and pressurizes concrete from a hopper and then pumps the concrete into a conveying pipe, the concrete is continuously conveyed to a pouring site along the conveying pipe, the pumping system is a main working mechanism of a pump truck, the conventional pumping system of the pump truck is mostly a double-pump system and comprises two main oil cylinders and a swing cylinder, the electric control logic is complex, the cost is higher, the failure rate is high, the hydraulic control system has the problems that a small-displacement swing cylinder is not in place, the reversing impact is large and the like, therefore, the design of a novel pumping system with low cost and low failure rate is urgently needed, the reversing impact can be reduced during large-displacement pumping, and the problem that the swing cylinder is not in place during small-displacement pumping is.
Disclosure of Invention
The invention provides a novel single-pump hydraulic control pumping system, which overcomes the defects of large arm support shaking and large noise caused by reversing impact in the traditional hydraulic control pumping process and the problems of pumping material returning and material accumulation caused by the fact that a small-displacement swing cylinder is not in place.
The invention provides a novel single-pump hydraulic control pumping system, which comprises a hydraulic oil tank, a plunger pump, a main cylinder and a tilt cylinder, wherein pressure oil output by the plunger pump is respectively input into a tilt cylinder control circuit and a main cylinder control circuit through a connecting pipeline, and on the basis of the prior art, the invention further improves the following steps: in the master cylinder control circuit, pressure oil is input into a master cylinder connected with a master cylinder hydraulic control valve through a connecting pipeline; in the tilt cylinder control loop, pressure oil passes through a one-way valve and then is respectively input into an energy accumulator and a tilt cylinder connected with a tilt cylinder hydraulic control valve; the master cylinder hydraulic control valve is controlled to be reversed by the swing cylinder signal oil, and the swing cylinder hydraulic control valve is controlled to be reversed by the master cylinder signal oil; an electric control switching valve is connected between the main cylinder signal source and the tilt cylinder hydraulic control valve.
Preferably, the device further comprises a first ball valve which is connected with the accumulator in series.
Preferably, the hydraulic control system further comprises a second ball valve which is connected with the master cylinder hydraulic control valve and the tilt cylinder in series.
Preferably, the device further comprises an overflow valve, the overflow valve is connected with the plunger pump, and the highest pressure of the plunger pump is controlled by the overflow valve.
Preferably, the plunger pump further comprises an electric unloading valve, the electric unloading valve is connected with the overflow valve in parallel, and whether the pressure output of the plunger pump is controlled by the electric unloading valve or not is judged.
The invention has the beneficial effects that: the energy accumulator can absorb peak pressure impact generated by reversing of a main cylinder hydraulic control valve, and the stored pressure oil is used for pushing the full-stroke reversing of the tilt cylinder, so that the reversing of the tilt cylinder is separated from the influence of the reversing of the main cylinder, and the large-displacement pumping is free from impact, and the small-displacement pumping is free from reversing and pause; the electric control switching valve can complete the switching of the positive and negative pumps; the ball valve can complete the pressure relief of the oil way of the tilt cylinder; the small-displacement working range of the hydraulic control pump truck is widened, the cost of hydraulic parts of a pumping system is greatly saved, the fuel economy is improved, the overall principle is simple, the operation is safe and reliable, and the application is environment-friendly; the stability, the fuel economy and the construction safety factor of the whole vehicle are improved.
Drawings
FIG. 1 is a schematic diagram of a pumping system of the present invention.
The attached drawings are marked as follows:
1. the hydraulic control system comprises a hydraulic oil tank, 2, a plunger pump, 3, a main cylinder, 4, a tilt cylinder, 5, a main cylinder hydraulic control valve, 6, a one-way valve, 7, an energy accumulator, 8, a tilt cylinder hydraulic control valve, 9, an electric control switching valve, 10, a first ball valve, 11, a second ball valve, 12, an overflow valve, 13, an electric unloading valve, 14 and a radiator.
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 with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and should not be construed as limiting the scope of the invention.
Examples
The novel single-pump hydraulic control pumping system comprises a hydraulic oil tank 1, a plunger pump 2, a main cylinder 3, a tilt cylinder 4, a main cylinder hydraulic control valve 5, a one-way valve 6, an energy accumulator 7, a tilt cylinder hydraulic control valve 8 and an electric control switching valve 9, wherein pressure oil output after the plunger pump 2 sucks low-pressure oil from the hydraulic oil tank 1 is respectively input into a tilt cylinder control circuit and a main cylinder control circuit through a connecting pipeline, the main cylinder 3 is only provided with one group, and in the main cylinder control circuit, the pressure oil is input into the main cylinder 3 connected with the main cylinder hydraulic control valve 5 through the connecting pipeline; in the tilt cylinder control loop, pressure oil passes through a one-way valve 6 and then is respectively input into an energy accumulator 7 and a tilt cylinder 4 connected with a tilt cylinder hydraulic control valve 8; an electric control switching valve 9 is connected between the signal source of the master cylinder 3 and the tilt cylinder hydraulic control valve 4.
During pumping construction, a plunger pump 2 provides a pressure oil source, one oil path drives a main cylinder 3 to work through a main cylinder hydraulic control valve 5, and the other oil path drives a tilt cylinder 4 to work through a check valve 6 and a series accumulator 7 and then a tilt cylinder hydraulic control valve 8. The swing cylinder hydraulic control valve 8 is controlled to be reversed by main cylinder signal oil, the main cylinder hydraulic control valve 5 is controlled to be reversed by the swing cylinder signal oil, pure hydraulic control pumping is achieved, circulating operation can be achieved without electric intervention, the failure rate is low, and response is fast. The pressure impact generated when the main cylinder 3 is reversed is completely absorbed by the energy accumulator 7, the energy accumulator 7 supplements oil when the tilt cylinder 4 is reversed, the energy utilization rate is obviously improved, and the reversing pause or the out-of-position caused by low load of the main cylinder 3 in the reversing process of the tilt cylinder 4 is avoided. The function of the reverse pump which is less used is realized by the electric control switching valve 9, the reverse pump is realized by one key, the operation is convenient, and the cost is saved.
As a preferred embodiment of this embodiment, the pumping system further comprises a first ball valve 10, and the first ball valve 10 is connected in series with the accumulator 7. The first ball valve 10 may unload the pressure of the accumulator 7 after the pumping is finished.
As a preferred embodiment of this embodiment, the pumping system further comprises a second ball valve 11, and the second ball valve 11 is connected in series with the master cylinder hydraulic control valve 5 and the tilt cylinder 4. The second ball valve 11 throttles or blocks the reversing signal oil of the main cylinder hydraulic switching control valve 5 provided by the tilt cylinder 4, can adjust the opening of the second ball valve 11 to control the reversing time delay of the main cylinder, and can be matched according to different working conditions to meet the operation habits of different operators.
As a preferred implementation manner of this embodiment, the pumping system further includes an overflow valve 12, the overflow valve 12 is connected to the plunger pump 2, and the maximum pressure of the plunger pump 2 is determined by the overflow valve 12, so as to control the pressure of the pumping system not to be higher than a rated value, and protect hydraulic pressure in the system.
As a preferred embodiment of the present embodiment, the pumping system further includes an electrical unloading valve 13, the electrical unloading valve 13 is connected in parallel with the relief valve 12, and whether the pressure output of the plunger pump 2 is controlled by the electrical unloading valve 13. The electric unloading valve 13 unloads the pressure of the plunger pump 2 in a non-pumping state, so that the power waste and the energy loss are avoided, and the serious abnormal sound is avoided.
As a preferred embodiment of this embodiment, the pumping system further includes a radiator 14, and the radiator 14 is connected to the output pipes of the overflow valve 12 and the electrical unloading valve 13. The radiator 14 can keep the temperature of the system oil to reach thermal balance, and the optimal performance of the hydraulic oil is exerted.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a new-type single pump liquid accuse pumping system, includes hydraulic tank, plunger pump, master cylinder, tilt cylinder, and the pressure oil of plunger pump output passes through connecting line and inputs tilt cylinder control circuit and master cylinder control circuit respectively, its characterized in that: in the master cylinder control circuit, pressure oil is input into a master cylinder connected with a master cylinder hydraulic control valve through a connecting pipeline; in the tilt cylinder control loop, pressure oil passes through a one-way valve and then is respectively input into an energy accumulator and a tilt cylinder connected with a tilt cylinder hydraulic control valve; the master cylinder hydraulic control valve is controlled to be reversed by the swing cylinder signal oil, and the swing cylinder hydraulic control valve is controlled to be reversed by the master cylinder signal oil; an electric control switching valve is connected between the main cylinder signal source and the tilt cylinder hydraulic control valve.
2. The new single-pump hydraulically-controlled pumping system according to claim 1, characterized in that: the energy accumulator also comprises a first ball valve which is connected with the energy accumulator in series.
3. The new single-pump hydraulically-controlled pumping system according to claim 1, characterized in that: the hydraulic control valve also comprises a second ball valve which is connected with the main cylinder hydraulic control valve and the tilt cylinder in series.
4. The new single-pump hydraulically-controlled pumping system according to claim 1, characterized in that: the plunger pump is characterized by further comprising an overflow valve, wherein the overflow valve is connected with the plunger pump, and the highest pressure of the plunger pump is controlled by the overflow valve.
5. The new single-pump hydraulically-controlled pumping system according to claim 4, characterized in that: the plunger pump is characterized by further comprising an electric unloading valve, the electric unloading valve is connected with the overflow valve in parallel, and whether the pressure output of the plunger pump is controlled by the electric unloading valve or not is judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401294.8A CN110966266A (en) | 2019-12-30 | 2019-12-30 | Novel single-pump hydraulic control pumping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401294.8A CN110966266A (en) | 2019-12-30 | 2019-12-30 | Novel single-pump hydraulic control pumping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110966266A true CN110966266A (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911401294.8A Pending CN110966266A (en) | 2019-12-30 | 2019-12-30 | Novel single-pump hydraulic control pumping system |
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| Country | Link |
|---|---|
| CN (1) | CN110966266A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810475A (en) * | 2020-08-13 | 2020-10-23 | 四川新筑智能工程装备制造有限公司 | Hydraulic control system for swing oil cylinder of wet spraying trolley |
| CN111963509A (en) * | 2020-08-25 | 2020-11-20 | 天津捷强动力装备股份有限公司 | Pressure relief system of pilot oil of oscillating cylinder hydraulic control valve |
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|---|---|---|---|---|
| CN102734236A (en) * | 2012-07-12 | 2012-10-17 | 三一重工股份有限公司 | Pumping reversal hydraulic control system, control method and concrete conveying pump |
| CN202690347U (en) * | 2012-05-30 | 2013-01-23 | 三一重工股份有限公司 | Concrete pump swinging cylinder hydraulic system and concrete pumping device |
| CN203035630U (en) * | 2013-01-25 | 2013-07-03 | 青岛九合重工机械有限公司 | Hydraulic-control hydraulic device of concrete conveying pump |
| CN203161687U (en) * | 2013-02-06 | 2013-08-28 | 青岛科尼乐重工有限公司 | Full-hydraulic-control hydraulic system |
| CN203189373U (en) * | 2013-04-18 | 2013-09-11 | 青岛科尼乐重工有限公司 | Concrete delivery pump hydraulic control hydraulic system |
| CN204827829U (en) * | 2015-08-03 | 2015-12-02 | 中国人民解放军空军勤务学院 | High pressure plunger pump's hydraulic control system |
| CN205371124U (en) * | 2016-01-18 | 2016-07-06 | 青岛科尼乐集团有限公司 | Concrete feeding pump hydraulic system |
| CN205478613U (en) * | 2016-02-17 | 2016-08-17 | 湖南鹏翔星通汽车有限公司 | Two powered hydraulic pressure systems of concrete spraying vehicle |
| CN110118169A (en) * | 2018-02-06 | 2019-08-13 | 爱伏机械(上海)有限公司 | A kind of hydraulic concrete double-piston pump commutation current stabilization control system |
| CN110230612A (en) * | 2018-03-06 | 2019-09-13 | 爱伏机械(上海)有限公司 | A kind of easy concrete pump list pump binary cycle system |
-
2019
- 2019-12-30 CN CN201911401294.8A patent/CN110966266A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202690347U (en) * | 2012-05-30 | 2013-01-23 | 三一重工股份有限公司 | Concrete pump swinging cylinder hydraulic system and concrete pumping device |
| CN102734236A (en) * | 2012-07-12 | 2012-10-17 | 三一重工股份有限公司 | Pumping reversal hydraulic control system, control method and concrete conveying pump |
| CN203035630U (en) * | 2013-01-25 | 2013-07-03 | 青岛九合重工机械有限公司 | Hydraulic-control hydraulic device of concrete conveying pump |
| CN203161687U (en) * | 2013-02-06 | 2013-08-28 | 青岛科尼乐重工有限公司 | Full-hydraulic-control hydraulic system |
| CN203189373U (en) * | 2013-04-18 | 2013-09-11 | 青岛科尼乐重工有限公司 | Concrete delivery pump hydraulic control hydraulic system |
| CN204827829U (en) * | 2015-08-03 | 2015-12-02 | 中国人民解放军空军勤务学院 | High pressure plunger pump's hydraulic control system |
| CN205371124U (en) * | 2016-01-18 | 2016-07-06 | 青岛科尼乐集团有限公司 | Concrete feeding pump hydraulic system |
| CN205478613U (en) * | 2016-02-17 | 2016-08-17 | 湖南鹏翔星通汽车有限公司 | Two powered hydraulic pressure systems of concrete spraying vehicle |
| CN110118169A (en) * | 2018-02-06 | 2019-08-13 | 爱伏机械(上海)有限公司 | A kind of hydraulic concrete double-piston pump commutation current stabilization control system |
| CN110230612A (en) * | 2018-03-06 | 2019-09-13 | 爱伏机械(上海)有限公司 | A kind of easy concrete pump list pump binary cycle system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810475A (en) * | 2020-08-13 | 2020-10-23 | 四川新筑智能工程装备制造有限公司 | Hydraulic control system for swing oil cylinder of wet spraying trolley |
| CN111963509A (en) * | 2020-08-25 | 2020-11-20 | 天津捷强动力装备股份有限公司 | Pressure relief system of pilot oil of oscillating cylinder hydraulic control valve |
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Application publication date: 20200407 |