CN216044220U - Pumping hydraulic system and concrete pumping equipment - Google Patents
Pumping hydraulic system and concrete pumping equipment Download PDFInfo
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- CN216044220U CN216044220U CN202122141064.1U CN202122141064U CN216044220U CN 216044220 U CN216044220 U CN 216044220U CN 202122141064 U CN202122141064 U CN 202122141064U CN 216044220 U CN216044220 U CN 216044220U
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Abstract
The utility model provides a pumping hydraulic system and concrete pumping equipment, and relates to the technical field of concrete pumping equipment, wherein the pumping hydraulic system comprises: the hydraulic oil supply system comprises a pumping main oil cylinder, a first oil supply unit for supplying pressure oil to the pumping main oil cylinder and a second oil supply unit for supplying pressure oil to the pumping main oil cylinder. The pumping master cylinder comprises a first master cylinder and a second master cylinder. The first oil supply unit comprises a first hydraulic pump which is used for sucking oil from an oil tank to form pressure oil discharge. The second feed unit includes a second hydraulic pump for drawing oil from the tank to create a pressurized discharge of oil. The pumping main oil cylinder can be independently supplied with pressure oil by using the first oil supply unit, or supply pressure oil by using the confluence of the first oil supply unit and the second oil supply unit. Pressure oil provided by the pumping hydraulic system can be completely used for driving the pumping main oil cylinder, and the energy utilization rate is high.
Description
Technical Field
The application relates to the technical field of concrete pumping equipment, in particular to a pumping hydraulic system and concrete pumping equipment.
Background
The concrete pumping mechanism is a core mechanism of concrete pumping equipment and is responsible for continuously pumping concrete to a pouring site along a conveying pipeline. The concrete pumping structure is generally a double-piston double-delivery-cylinder pumping mechanism. The pumping mechanism utilizes two main oil cylinders to work alternately, one cylinder moves forwards and the other cylinder moves backwards, and pumps the concrete sucked into the conveying cylinder to the discharge hole in sequence.
The pumping volume of the concrete pumping mechanism is related to the action speed of the main oil cylinder. The main oil cylinder of the existing pumping mechanism adopts a single oil source for supplying oil, and the flow rate of pressure oil provided by the oil source is a fixed value. In some existing technical schemes, pressure oil output by an oil source is all used for driving a main oil cylinder, the action speed of the main oil cylinder is relatively fixed, the pumping volume of a concrete pumping mechanism is a fixed value, and the size of the pumping volume cannot be adjusted, so that the application scene is limited. In some existing technical schemes, when the actually required pumping amount is smaller than the maximum pumping amount of the pumping system, part of pressure oil output by an oil source is used for driving a master cylinder, and part of pressure oil overflows back to an oil tank, so that extra energy loss is caused at the moment, and the energy utilization rate is not high.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present application is to provide a pumping hydraulic system and a concrete pumping device, aiming at the above disadvantages of the prior art.
The pumping hydraulic system includes:
the pumping main oil cylinder comprises a first main oil cylinder and a second main oil cylinder;
the first oil supply unit is used for supplying pressure oil to the pumping main oil cylinder and comprises a first hydraulic pump which is used for sucking the oil from an oil tank to form pressure oil and discharging the pressure oil;
the second supply unit is used for supplying pressure oil to the pumping main oil cylinder and comprises a second hydraulic pump which is used for sucking the oil from an oil tank to form pressure oil and discharging the pressure oil;
the pumping main oil cylinder can be independently supplied with pressure oil by using the first oil supply unit, or supply pressure oil by using the confluence of the first oil supply unit and the second oil supply unit.
In some embodiments, the pumping hydraulic system further comprises a first directional valve, a first check valve, a second check valve; the first reversing valve comprises a first oil port, a second oil port, a third oil port, a fourth oil port, a first working position and a second working position; when the valve core of the first reversing valve is located at the first working position, the first oil port is communicated with the third oil port, and the second oil port is communicated with the fourth oil port; when the valve core of the first reversing valve is located at the second working position, the first oil port is communicated with the fourth oil port, and the second oil port is communicated with the third oil port;
an oil inlet of the first one-way valve is connected to the first oil supply unit, and an oil outlet of the first one-way valve is connected to a first oil port of the first reversing valve; an oil inlet of the second one-way valve is connected to the second supply unit, and an oil outlet of the second one-way valve is connected to a first oil port of the first reversing valve;
a second oil port of the first reversing valve is connected with an oil tank; a third oil port of the first reversing valve is connected with the first main oil cylinder; and a fourth oil port of the first reversing valve is connected with the second main oil cylinder.
In some aspects, the pumping hydraulic system further comprises a second directional valve; the second reversing valve is provided with a fifth oil port and a sixth oil port; the fifth oil port is connected with the second supply unit, and the sixth oil port is connected with the oil tank; and the second reversing valve can adjust the on-off between the fifth oil port and the sixth oil port.
In some technical schemes, a third oil port of the first reversing valve is connected to a rodless cavity of the first master cylinder; a fourth oil port of the first reversing valve is connected to a rodless cavity of the second main oil cylinder; and the rod cavity of the first main oil cylinder is connected with the rod cavity of the second main oil cylinder.
In some technical solutions, the third oil port of the first directional control valve is connected to the rod chamber of the first master cylinder; a fourth oil port of the first reversing valve is connected to a rod cavity of the second main oil cylinder; and the rodless cavity of the first main oil cylinder is connected with the rodless cavity of the second main oil cylinder.
In some technical schemes, an overflow loop is further arranged between a first oil port of the first reversing valve and the oil tank; an overflow valve is arranged on the overflow loop.
In some embodiments, the first hydraulic pump is driven by a first power source; the second hydraulic pump is driven by a second power source.
In some embodiments, the first hydraulic pump and the second hydraulic pump are driven by the same power source.
On the other hand, the application also provides concrete pumping equipment which is provided with the pumping hydraulic system.
In this application, the pumping master cylinder can use first feed unit alone to supply pressure fluid, or uses first feed unit and the confluence feed pressure fluid of second feed unit, has following technological effect: first, in the application, the pumping hydraulic system can adopt two different flow rates to drive the pumping main oil cylinder to act, so that two different pumping volume rates can be obtained to meet the pumping volume requirements of different use scenes. Secondly, the pressure fluid that the hydraulic system of pump sending provided in this application can all be used for driving the pump sending master cylinder, and energy utilization is high.
Drawings
Fig. 1 is a schematic structural diagram of a pumping hydraulic system in an embodiment of the present application.
Detailed Description
The following are specific embodiments of the present application and are further described with reference to the drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present application provides a pumping hydraulic system, including: the hydraulic system comprises a pumping main cylinder 10, a first oil supply unit 20 for supplying pressure oil to the pumping main cylinder 10, and a second oil supply unit 30 for supplying pressure oil to the pumping main cylinder 10. The pumping master cylinder 10 includes a first master cylinder 11 and a second master cylinder 12. The first oil supply unit 20 includes a first hydraulic pump 21 for drawing oil from a tank to form a pressure oil discharge. The second feed unit 30 includes a second hydraulic pump 31 for drawing oil from a tank to form a pressurized oil discharge. The pumping master cylinder 10 can supply pressure oil alone using the first oil supply unit 20, or supply pressure oil by merging the first oil supply unit 20 and the second oil supply unit 30.
In the embodiment of the application, the pumping hydraulic system can provide at least two gears of flow, the first gear is: a first oil supply unit 20 is adopted to independently supply pressure oil to a pumping main oil cylinder 10; a second gear: the first oil supply unit 20 and the second oil supply unit 30 are adopted to supply pressure oil to the pumping main oil cylinder 10 in a confluence mode. In some embodiments, the first and second oil supply units 20 and 30 can supply different flows of oil under pressure, and the pumping hydraulic system can provide third gear: the second supply unit 30 is used to supply pressurized oil alone to the pumping master cylinder 10. In a specific example, the flow rate of the first supply unit 20 is 45L/min and the flow rate of the second supply unit 30 is 17L/min.
Referring to fig. 1, in some embodiments, a first hydraulic pump 21 is driven with a first power source 22; the second hydraulic pump 31 is driven by a second power source 32. The first oil supply unit 20 and the second oil supply unit 30 are each provided with a power source separately. In some embodiments, the first hydraulic pump 21 and the second hydraulic pump 31 are driven by the same power source, and the output shaft of the power source drives the first hydraulic pump 21 and the second hydraulic pump 31 to work simultaneously, so that the first oil supply unit 20 and the second oil supply unit 30 output pressure oil simultaneously. Here, the power source may be an electric motor, an internal combustion engine. Under the drive of the power source, the hydraulic pump sucks oil from the oil tank to form pressure oil to be discharged.
The pumping hydraulic system further comprises a first directional valve 40, a first check valve 50, a second check valve 60; the first reversing valve 40 comprises a first oil port p1, a second oil port p2, a third oil port p3, a fourth oil port p4, a first working position and a second working position; when the valve core of the first direction valve 40 is located at the first working position, the first oil port p1 is communicated with the third oil port p3, and the second oil port p2 is communicated with the fourth oil port p 4; when the valve core of the first direction valve 40 is located at the second working position, the first oil port p1 is communicated with the fourth oil port p4, and the second oil port p2 is communicated with the third oil port p 3; an oil inlet of the first check valve 50 is connected to the first oil supply unit 20, and an oil outlet is connected to the first oil port p1 of the first direction valve 40; an oil inlet of the second check valve 60 is connected to the second supply unit 30, and an oil outlet is connected to the first oil port p1 of the first direction valve 40; the second port p2 of the first direction valve 40 is connected with the oil tank; the third oil port p3 of the first direction valve 40 is connected with the first main oil cylinder 11; the fourth port p4 of the first direction valve 40 is connected to the second master cylinder 12.
The first oil supply unit 20 is connected to the first port p1 of the first direction valve 40 through the first check valve 50, and the second oil supply unit 30 is connected to the first port p1 of the first direction valve 40 through the second check valve 60. The first port p1 of the first direction valve 40 is an oil supply port. As the spool of the first direction valve 40 is switched between the first operating position and the second operating position, the pressure oil is discharged from the third port p3 and delivered to the first master cylinder 11 or discharged from the fourth port p4 and delivered to the second master cylinder 12, thereby realizing the cyclic reverse reciprocating motion of the first master cylinder 11 and the second master cylinder 12.
In some embodiments, the pumping hydraulic system further comprises a second directional valve 70; the second direction valve 70 has a fifth port p5 and a sixth port p 6; the fifth oil port p5 is connected with the second supply unit 30, and the sixth oil port p6 is connected with the oil tank; the second direction valve 70 can adjust the on-off between the fifth port p5 and the sixth port p 6. When the fifth port p5 and the sixth port p6 of the second direction valve 70 are adjusted to be in a communicated state, the pressure oil outputted from the second supply unit 30 is directly returned to the tank. When the second supply unit 30 supplies oil to the pumping master cylinder 10, the fifth port p5 and the sixth port p6 of the second direction valve 70 are adjusted to the off state.
In some embodiments, the third port p3 of the first direction valve 40 is connected to the rodless chamber of the first master cylinder 11; the fourth port p4 of the first direction valve 40 is connected to the rodless cavity of the second master cylinder 12; and the rod cavity of the first main oil cylinder 11 is connected with the rod cavity of the second main oil cylinder 12. At the moment, oil is fed from the rodless cavity, the pumping pressure is high, and the pumping discharge is small.
In some embodiments, the third port p3 of the first direction valve 40 is connected to the rod chamber of the first master cylinder 11; the fourth port p4 of the first direction valve 40 is connected to the rod chamber of the second master cylinder 12; and the rodless cavity of the first main oil cylinder 11 is connected with the rodless cavity of the second main oil cylinder 12. At the moment, oil is fed from the rod cavity, the pumping pressure is relatively small, and the pumping discharge is large.
In some embodiments, an overflow circuit 80 is further provided between the first port p1 of the first direction valve 40 and the oil tank; the overflow circuit 80 is provided with an overflow valve 81.
The application also provides concrete pumping equipment which is provided with the pumping hydraulic system. The related contents refer to the contents of the previous step, and are not described in detail here.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the present application as defined by the appended claims.
Claims (9)
1. A pumped hydraulic system, comprising:
a pumping master cylinder (10) comprising a first master cylinder (11) and a second master cylinder (12);
a first oil supply unit (20) for supplying pressure oil to the pumping main oil cylinder (10), wherein the first oil supply unit (20) comprises a first hydraulic pump (21) for sucking the oil from an oil tank to form pressure oil for discharging;
a second feed unit (30) for feeding pressurized oil to the pumping master cylinder (10), the second feed unit (30) comprising a second hydraulic pump (31) for drawing oil from a tank to form pressurized oil for discharge;
wherein the pumping master cylinder (10) can be supplied with pressure oil by the first oil supply unit (20) alone or by the first oil supply unit (20) and the second oil supply unit (30) together.
2. The pumped hydraulic system of claim 1, further comprising a first directional control valve (40), a first check valve (50), a second check valve (60); the first reversing valve (40) comprises a first oil port (p1), a second oil port (p2), a third oil port (p3), a fourth oil port (p4), a first working position and a second working position; when the valve core of the first reversing valve (40) is located at the first working position, the first oil port (p1) is communicated with the third oil port (p3), and the second oil port (p2) is communicated with the fourth oil port (p 4); when the valve core of the first reversing valve (40) is located at the second working position, the first oil port (p1) is communicated with the fourth oil port (p4), and the second oil port (p2) is communicated with the third oil port (p 3);
an oil inlet of the first check valve (50) is connected to the first oil supply unit (20), and an oil outlet of the first check valve (50) is connected to a first oil port (p1) of the first reversing valve (40); an oil inlet of the second check valve (60) is connected to the second supply unit (30), and an oil outlet is connected to a first oil port (p1) of the first reversing valve (40);
a second oil port (p2) of the first reversing valve (40) is connected with an oil tank; a third oil port (p3) of the first reversing valve (40) is connected with the first main oil cylinder (11); and a fourth oil port (p4) of the first reversing valve (40) is connected with the second main oil cylinder (12).
3. The pumped hydraulic system of claim 2, further comprising a second directional control valve (70); the second direction valve (70) has a fifth port (p5) and a sixth port (p 6); wherein the fifth oil port (p5) is connected with the second supply unit (30), and the sixth oil port (p6) is connected with the oil tank; the second reversing valve (70) can adjust the on-off between the fifth oil port (p5) and the sixth oil port (p 6).
4. The pumped hydraulic system of claim 2, characterized in that the third port (p3) of the first directional control valve (40) is connected to the rodless chamber of the first master cylinder (11); a fourth oil port (p4) of the first reversing valve (40) is connected to a rodless cavity of the second main oil cylinder (12); and a rod cavity of the first main oil cylinder (11) is connected with a rod cavity of the second main oil cylinder (12).
5. The pumped hydraulic system of claim 2, characterized in that the third port (p3) of the first directional control valve (40) is connected to the rod chamber of the first master cylinder (11); the fourth oil port (p4) of the first reversing valve (40) is connected to the rod cavity of the second main oil cylinder (12); and the rodless cavity of the first main oil cylinder (11) is connected with the rodless cavity of the second main oil cylinder (12).
6. The pumped hydraulic system of claim 2, wherein an overflow circuit (80) is further arranged between the first oil port (p1) of the first direction valve (40) and an oil tank; an overflow valve (81) is arranged on the overflow loop (80).
7. The pumped hydraulic system of claim 1, characterized in that the first hydraulic pump (21) is driven with a first power source (22); the second hydraulic pump (31) is driven by a second power source (32).
8. Pumping hydraulic system according to claim 1, characterized in that the first hydraulic pump (21) and the second hydraulic pump (31) are driven with the same power source.
9. Concrete pumping equipment, characterized in that it has a pumping hydraulic system according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122141064.1U CN216044220U (en) | 2021-09-06 | 2021-09-06 | Pumping hydraulic system and concrete pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122141064.1U CN216044220U (en) | 2021-09-06 | 2021-09-06 | Pumping hydraulic system and concrete pumping equipment |
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| Publication Number | Publication Date |
|---|---|
| CN216044220U true CN216044220U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122141064.1U Active CN216044220U (en) | 2021-09-06 | 2021-09-06 | Pumping hydraulic system and concrete pumping equipment |
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| Country | Link |
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| CN (1) | CN216044220U (en) |
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2021
- 2021-09-06 CN CN202122141064.1U patent/CN216044220U/en active Active
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