CN201963620U - Power drive unit of concrete pumping equipment and concrete pumping equipment - Google Patents

Power drive unit of concrete pumping equipment and concrete pumping equipment Download PDF

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Publication number
CN201963620U
CN201963620U CN201120047400XU CN201120047400U CN201963620U CN 201963620 U CN201963620 U CN 201963620U CN 201120047400X U CN201120047400X U CN 201120047400XU CN 201120047400 U CN201120047400 U CN 201120047400U CN 201963620 U CN201963620 U CN 201963620U
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China
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hydraulic pump
oil
oil hydraulic
hydraulic
valve
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CN201120047400XU
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刘波
郭岗
裴杰
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
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Abstract

The utility model provides a power drive unit of concrete pumping equipment, which comprises a first power source (1), a second power source (2), a first hydraulic pump (3), a hydraulic motor (6), a transfer case (7) and a second hydraulic pump (8), wherein the first power source (1) is connected to the first power input end of the transfer case (7) through the first hydraulic pump (3) and the hydraulic motor (6) in a transmission way; the second power source (2) is connected to the second power input end of the transfer case (7) in the transmission way; the power output end of the transfer case (7) is connected with the second hydraulic pump (8) in the transmission way; the second hydraulic pump (8) is used for hydraulically driving a working component (14) through a hydraulic drive pipeline (16); and the oil outlet of the first hydraulic pump (3) is hydraulically connected to the hydraulic drive pipeline (16). The power drive unit is capable of improving the pumping performance of the concrete pumping equipment and enhancing the working condition adaptation of the concrete pumping equipment, and thereby, the higher economic benefit is realized.

Description

The Power Drive Unit of concrete pumping equipment and concrete pumping equipment
Technical field
The utility model relates to the Power Drive Unit of concrete pumping equipment and comprises the concrete pumping equipment of this Power Drive Unit.
Background technique
CN201386294Y discloses a kind of engineering machinery double motor equipment, as shown in Figure 1, this device comprises first power source 1, second power source 2, first oil hydraulic pump 3, oil hydraulic motor 6, transfer case 7 and second oil hydraulic pump 8, described first power source 1 is by be in transmission connection first power intake of described transfer case 7 of described first oil hydraulic pump 3 and oil hydraulic motor 6, be in transmission connection second power intake of described transfer case 7 of described second power source 2, the clutch end of described transfer case 7 described second oil hydraulic pump 8 that is in transmission connection.This project machinery has two power output routes with double motor equipment, article one, the power output route is: first power source 1 drives first oil hydraulic pump 3, first oil hydraulic pump 3 drives oil hydraulic motor 6 rotations, oil hydraulic motor 6 drives second oil hydraulic pump, 8, the second oil hydraulic pumps 8 by transfer case 7 and drives operation element work again; Second power output route is: second power source 2 drives second oil hydraulic pump, 8, the second oil hydraulic pumps 8 by transfer case 7 and drives operation element work again.Above-mentioned engineering machinery is and can respectively first power source 1 and second power source 2 be set at motor and motor with the advantage of double motor equipment, like this, just can drive second oil hydraulic pump 8 in the place that the external application power supply is arranged by motor, reach energy-conservation and purpose environmental protection, reduced user cost; , easy to use in the place that has a power failure or do not have the external application power supply just by engine-driving second oil hydraulic pump 8.But, because first power source 1 and second power source 2 can not work simultaneously, so can't satisfy the needs of high-pressure large-displacement concrete pumping equipment.
The model utility content
The purpose of this utility model provides a kind of Power Drive Unit and the concrete pumping equipment that comprises this Power Drive Unit that can satisfy the high-pressure large-displacement concrete pumping equipment to the concrete pumping equipment of the demand of power.
To achieve these goals, the utility model provides a kind of Power Drive Unit of concrete pumping equipment, this device comprises first power source, second power source, first oil hydraulic pump, oil hydraulic motor, the transfer case and second oil hydraulic pump, described first power source is by be in transmission connection first power intake of described transfer case of described first oil hydraulic pump and oil hydraulic motor, be in transmission connection second power intake of described transfer case of described second power source, the clutch end of described transfer case described second oil hydraulic pump that is in transmission connection, described second oil hydraulic pump drives operation element by the hydraulic driving hydraulic pressure of pipe line, wherein, the oil outlet hydraulic pressure of described first oil hydraulic pump is connected to described hydraulic driving pipeline.
Preferably, this device comprises hydraulic control component, the oil outlet that is used to control described first oil hydraulic pump optionally be communicated with the filler opening of described oil hydraulic motor or with described hydraulic driving pipeline connection.
Preferably, described hydraulic control component comprises first cartridge valve and second cartridge valve, two actuator ports of described first cartridge valve are connected with the oil outlet of described first oil hydraulic pump and the filler opening hydraulic pressure of described oil hydraulic motor respectively, and two actuator ports of described second cartridge valve are connected with described hydraulic driving hydraulic pressure of pipe line with the oil outlet of described first oil hydraulic pump respectively.
Preferably, described hydraulic control component comprises selector valve, and two actuator ports of this selector valve are connected with the control port of described first cartridge valve and the control port hydraulic pressure of described second cartridge valve respectively.
Preferably, the filler opening hydraulic pressure of described selector valve is connected to the oil outlet of described first oil hydraulic pump.
Preferably, the filler opening hydraulic pressure of described selector valve is connected to the oil outlet of described second oil hydraulic pump.
Preferably, be serially connected with first one-way valve on the pipeline between the oil outlet of the filler opening of described selector valve and described first oil hydraulic pump, be serially connected with second one-way valve on the pipeline between the oil outlet of the filler opening of described selector valve and described second oil hydraulic pump.
Preferably, described hydraulic control component comprises two position three way directional control valve, the filler opening hydraulic pressure of this two position three way directional control valve is connected to the oil outlet of described first oil hydraulic pump, an actuator port hydraulic pressure is connected to the filler opening of described oil hydraulic motor, and another actuator port hydraulic pressure is connected to described hydraulic driving pipeline.
Preferably, be serially connected with first selector valve on the described hydraulic driving pipeline, the oil outlet hydraulic pressure of described first oil hydraulic pump is connected to the described hydraulic driving pipeline between described first selector valve and described second oil hydraulic pump.
Preferably, be serially connected with first selector valve on the described hydraulic driving pipeline, the oil outlet of described first oil hydraulic pump is connected to described hydraulic driving pipeline between described first selector valve and the described operation element by the second selector valve hydraulic pressure.
Preferably, described first power source is a motor, and described second power source is a motor.
In addition, the utility model also provides a kind of concrete pumping equipment, and wherein, this concrete pumping equipment comprises above-mentioned Power Drive Unit.
In the Power Drive Unit of the concrete pumping equipment that the utility model provides, because the oil outlet hydraulic pressure of first oil hydraulic pump is connected to described hydraulic driving pipeline, so the Power Drive Unit of the concrete pumping equipment that the utility model provides has three power output routes, article one, the power output route is: first drive power source, first oil hydraulic pump, the rotation of the first hydraulic pump drive oil hydraulic motor, oil hydraulic motor drives second oil hydraulic pump by transfer case, and second oil hydraulic pump drives operation element work again; Second power output route is: second power source drives second oil hydraulic pump by transfer case, and second oil hydraulic pump drives operation element work again; Article three, the power output route is: first drive power source, first oil hydraulic pump, second power source drives second oil hydraulic pump by transfer case simultaneously, drives operation element work again behind first oil hydraulic pump and second oil hydraulic pump interflow.Because the Power Drive Unit of the concrete pumping equipment that the utility model provides has the 3rd power output route, so can satisfy the demand of high-pressure large-displacement concrete pumping equipment to power, simultaneously can satisfy the requirement of high-rise pumping, thereby greatly improve the pump-conveying property of concrete pumping equipment.In addition, owing to when the low pressure pumping, can adopt first power source or second power source that power is provided, and when the high pressure pumping, adopt first power source and second power source that power is provided simultaneously, so improved the operating mode adaptive capacity of concrete pumping equipment, the concrete cost of every side when having reduced high/low press pump and sending, thus realized high economic benefit.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with following embodiment one, but does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the principle schematic representation of existing engineering machinery with dual-power driving device;
Fig. 2 is the principle schematic representation of the Power Drive Unit of the concrete pumping equipment that provides of the utility model;
Fig. 3 is a kind of structural representation of mode of execution of the Power Drive Unit of the concrete pumping equipment that provides of the utility model;
Fig. 4 is the structural representation of another kind of mode of execution of the Power Drive Unit of the concrete pumping equipment that provides of the utility model;
Fig. 5 is the structural representation of another mode of execution of the Power Drive Unit of the concrete pumping equipment that provides of the utility model.
Description of reference numerals
1: the first power source; 2: the second power sources; 3: the first oil hydraulic pumps; 4: the first hydraulic pipe lines; 5: transmission shaft; 6: oil hydraulic motor; 7: transfer case; 8: the second oil hydraulic pumps; 9: the second hydraulic pipe lines; 10: the second one-way valves; 11: selector valve; 12: the first cartridge valves; 13: the second cartridge valves; 14: operation element; 15: two position three way directional control valve; 16: the hydraulic driving pipeline; 17: the first selector valves; 18: the second selector valves; 19: the first one-way valves; 20: the first relief valves; 21: the first pressure gauges; 22: the three one-way valves; 23: liquid-filling valve; 24: the second relief valves; 25: the second pressure gauges; 26: fuel tank; 27: filter.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
Before being described, embodiment of the present utility model need to prove, do not doing under the situation of opposite explanation, the implication that employed term " is in transmission connection " in the utility model is for (for example passing through power transmission member, transmission shaft, hydraulic pipe line etc.) connect, to realize the transmission of power when needed; The implication of " hydraulic pressure connection " is for connecting by hydraulic pipe line (and necessary hydraulic element), to realize the transmission of hydraulic oil when needed.
The utility model provides a kind of Power Drive Unit of concrete pumping equipment, this device comprises first power source 1, second power source 2, first oil hydraulic pump 3, oil hydraulic motor 6, the transfer case 7 and second oil hydraulic pump 8, described first power source 1 is by be in transmission connection first power intake of described transfer case 7 of described first oil hydraulic pump 3 and oil hydraulic motor 6, be in transmission connection second power intake of described transfer case 7 of described second power source 2, the clutch end of described transfer case 7 described second oil hydraulic pump 8 that is in transmission connection, described second oil hydraulic pump 8 is by hydraulic driving pipeline 16 hydraulic driving operation elements 14, wherein, the oil outlet hydraulic pressure of described first oil hydraulic pump 3 is connected to described hydraulic driving pipeline 16.
In the Power Drive Unit of the concrete pumping equipment that the utility model provides, because the oil outlet hydraulic pressure of first oil hydraulic pump 3 is connected to described hydraulic driving pipeline 16, so the Power Drive Unit of the concrete pumping equipment that the utility model provides has three power output routes, article one, the power output route is: first power source 1 drives first oil hydraulic pump 3, first oil hydraulic pump 3 drives oil hydraulic motor 6 rotations, oil hydraulic motor 6 drives second oil hydraulic pump, 8, the second oil hydraulic pumps 8 by transfer case 7 and drives operation element 14 work again; Second power output route is: second power source 2 drives second oil hydraulic pump, 8, the second oil hydraulic pumps 8 by transfer case 7 and drives operation element 14 work again; Article three, the power output route is: first power source 1 drives first oil hydraulic pump 3, and second power source 2 drives operation element 14 work after driving second oil hydraulic pump, 8, the first oil hydraulic pumps 3 and second oil hydraulic pump, 8 interflow by transfer case 7 more simultaneously.Because the Power Drive Unit of the concrete pumping equipment that the utility model provides has the 3rd power output route, so can satisfy the demand of high-pressure large-displacement concrete pumping equipment to power, simultaneously can satisfy the requirement of high-rise pumping, thereby greatly improve the pump-conveying property of concrete pumping equipment.In addition, owing to when the low pressure pumping, can adopt first power source 1 or second power source 2 that power is provided, and when the high pressure pumping, adopt first power source 1 and second power source 2 that power is provided simultaneously, so improved the operating mode adaptive capacity of concrete pumping equipment, the concrete cost of every side when having reduced high/low press pump and sending, thus realized high economic benefit.
As shown in Figure 2, the oil outlet of first oil hydraulic pump 3 can be connected to oil hydraulic motor 6 by first hydraulic pipe line, 4 hydraulic pressure, and is connected to hydraulic driving pipeline 16 by second hydraulic pipe line, 9 hydraulic pressure.In order to control the break-make of first hydraulic pipe line 4 and second hydraulic pipe line 9 easily, make the oil outlet of first oil hydraulic pump 3 optionally be communicated with or be communicated with described hydraulic driving pipeline 16 with the filler opening of described oil hydraulic motor 6, preferably, this device comprises hydraulic control component, and the oil outlet that is used to control described first oil hydraulic pump 3 optionally is communicated with the filler opening of described oil hydraulic motor 6 or is communicated with described hydraulic driving pipeline 16.Can suitably select hydraulic control component, to realize above-mentioned functions.
As shown in Figure 3, according to a kind of mode of execution of the present utility model, described hydraulic control component comprises first cartridge valve 12 and second cartridge valve 13, two actuator ports of described first cartridge valve 12 are connected with the oil outlet of described first oil hydraulic pump 3 and the filler opening hydraulic pressure of described oil hydraulic motor 6 respectively, and two actuator ports of described second cartridge valve 13 are connected with described hydraulic driving pipeline 16 hydraulic pressure with the oil outlet of described first oil hydraulic pump 3 respectively.Like this,, the break-make of first hydraulic pipe line 4 and second hydraulic pipe line 9 be can control easily, thereby article one power output route or the 3rd power output route optionally realized by controlling the opening and closing of first cartridge valve 12 and second cartridge valve 13.This kind control mode can be used under the bigger situation of first oil hydraulic pump, 3 discharge capacities.
In order to control the opening and closing of first cartridge valve 12 and second cartridge valve 13 easily, preferably, described hydraulic control component comprises selector valve 11, and two actuator ports of this selector valve 11 are connected with the control port of described first cartridge valve 12 and the control port hydraulic pressure of described second cartridge valve 13 respectively.Selector valve 11 can suitably be selected various selector valves, and shown in Figure 3 is three position four-way directional control valve.When needs adopted the work of article one power output route, three position four-way directional control valve was in position, a left side, and first cartridge valve 12 is opened, and second cartridge valve 13 is closed; When needs adopted the work of second power output route, three position four-way directional control valve was in meta, and first cartridge valve 12 and second cartridge valve 13 are all closed; When needs adopted the 3rd power output route work, three position four-way directional control valve was in right position, and first cartridge valve 12 is closed, and second cartridge valve 13 is opened.
According to a kind of preferred implementation of the present utility model, the filler opening hydraulic pressure of described selector valve 11 is connected to the oil outlet of described first oil hydraulic pump 3.Like this, can pass through first oil hydraulic pump 3 to selector valve 11 fuel feeding, thereby need not to be provided with extraly oil supplying device, the convenient layout, and energy saving.According to another kind of preferred implementation of the present utility model, the filler opening hydraulic pressure of described selector valve 11 is connected to the oil outlet of described second oil hydraulic pump 8.Like this, can pass through second oil hydraulic pump 8 to selector valve 11 fuel feeding, thereby need not to be provided with extraly oil supplying device, the convenient layout, and energy saving.In mode of execution shown in Figure 3, the filler opening of selector valve 11 hydraulic pressure simultaneously is connected to the oil outlet of described first oil hydraulic pump 3 and the oil outlet of described second oil hydraulic pump 8.Certainly, as selection, the filler opening of selector valve 11 also can be connected to the oil outlet of first oil hydraulic pump 3 or the oil outlet of second oil hydraulic pump 8 by a hydraulic pressure.
For the filler opening pressure that makes selector valve 11 is the maximum value of the oil outlet pressure of the oil outlet pressure of first oil hydraulic pump 3 and second oil hydraulic pump 8, guarantee the opening and closing of first cartridge valve 12 and second cartridge valve 13, preferably, be serially connected with first one-way valve 19 on the pipeline between the oil outlet of the filler opening of described selector valve 11 and described first oil hydraulic pump 3, be serially connected with second one-way valve 10 on the pipeline between the oil outlet of the filler opening of described selector valve 11 and described second oil hydraulic pump 8.
As shown in Figure 5, according to another kind of mode of execution of the present utility model, described hydraulic control component comprises two position three way directional control valve 15, the filler opening hydraulic pressure of this two position three way directional control valve 15 is connected to the oil outlet of described first oil hydraulic pump 3, an actuator port hydraulic pressure is connected to the filler opening of described oil hydraulic motor 6, and another actuator port hydraulic pressure is connected to described hydraulic driving pipeline 16.Like this,, the break-make of first hydraulic pipe line 4 and second hydraulic pipe line 9 be can control easily, thereby article one power output route or the 3rd power output route optionally realized by controlling this two position three way directional control valve 15.As shown in Figure 5, when needs adopted the work of article one power output route, two position three way directional control valve 15 was in right position; When needs adopted the 3rd power output route work, two position three way directional control valve 15 was in position, a left side; And when needs adopt the work of second power output route, first power source 1 can be closed, and only start second power source 2.This kind control mode is convenient arranges, can use under the smaller situation of first oil hydraulic pump, 3 discharge capacities.
As shown in Figure 3, according to a kind of mode of execution of the present utility model, be serially connected with first selector valve 17 on the described hydraulic driving pipeline 16, the oil outlet hydraulic pressure of described first oil hydraulic pump 3 is connected to the described hydraulic driving pipeline 16 between described first selector valve 17 and described second oil hydraulic pump 8.This kind scheme can be used under the less situation of the discharge capacity of first oil hydraulic pump 3 and second oil hydraulic pump 8, guarantees that flow behind the fluid interflow that the fluid that first oil hydraulic pump 3 is discharged and second oil hydraulic pump 8 discharge is less than the rated flow of first selector valve 17.In this case, the fluid that the fluid that first oil hydraulic pump 3 is discharged can be earlier discharged with second oil hydraulic pump 8 collaborates, and commutates by first selector valve 17 again.
As shown in Figure 4, according to another kind of mode of execution of the present utility model, be serially connected with first selector valve 17 on the described hydraulic driving pipeline 16, the oil outlet of described first oil hydraulic pump 3 is connected to described hydraulic driving pipeline 16 between described first selector valve 17 and the described operation element 14 by second selector valve, 18 hydraulic pressure.This kind scheme can be used under a selector valve can't satisfy the situation of total displacement of first oil hydraulic pump 3 and second oil hydraulic pump 8.In this case, the fluid of first oil hydraulic pump, 3 discharges and the fluid of second oil hydraulic pump, 8 discharges are collaborated after second selector valve 18 and 17 commutations of first selector valve respectively earlier again, to prevent under the situation that a selector valve only is set, can't to satisfy through-flow requirement.Described first selector valve 17 and second selector valve 18 can suitably be selected various selector valves, for example electro-hydraulic reversing valve.
Described first power source 1 is used to drive the work of first oil hydraulic pump 3, and described second power source 2 is usually by transmission shaft 5 second power intake of transfer case 7 that is in transmission connection, thereby drives 8 work of second oil hydraulic pump.Particular type to first power source 1 and second power source 2 does not have special requirement, and for example first power source 1 can be motor or motor, and second power source 2 also can be motor or motor.And described motor can be petrol engine or diesel engine.According to a kind of preferred implementation of the present utility model, described first power source 1 is a motor, and described second power source 2 is a motor.Like this, just can drive second oil hydraulic pump 8, reach energy-conservation and purpose environmental protection, reduce user cost by motor in the place that the external application power supply is arranged; , easy to use in the place that has a power failure or do not have the external application power supply just by engine-driving second oil hydraulic pump 8.Need to prove that when concrete pumping equipment was Vehicular concrete pump or concrete pump truck, described motor can advantageously be selected engine in situ.
To shown in Figure 5, be serially connected with first relief valve 20 that is used to realize overload protection as Fig. 3 on the hydraulic pipe line of first oil hydraulic pump 3, this first relief valve 20 can play the effect of safety valve.In addition, can also be provided with the pressure measurement branch road on the hydraulic pipe line of first oil hydraulic pump 3, this pressure measurement branch road is provided with first pressure gauge 21, and this first pressure gauge 21 is used to measure the pumping pressure of first oil hydraulic pump 3.
To shown in Figure 5, be provided with three one-way valve 22 between the filler opening each other of oil hydraulic motor 6 and the hydraulic fluid port A of oil outlet and the hydraulic fluid port B as Fig. 3.In addition, the hydraulic fluid port B of oil hydraulic motor 6 also is provided with the topping up branch road, and this topping up branch road is provided with liquid-filling valve 23, for example can select conventional one-way valve as liquid-filling valve 23.Like this, when needs use second power source 2 to drive 8 work of second oil hydraulic pump, since second oil hydraulic pump 8 usually with oil hydraulic motor 6 coaxial settings, so oil hydraulic motor 6 can be along with 8 idle running of second oil hydraulic pump, the hydraulic fluid port A part fluid of oil hydraulic motor 6 can flow back to the hydraulic fluid port B of oil hydraulic motor 6 by the 3rd one-way valve 22 at this moment.Simultaneously, liquid-filling valve 23 can guarantee effectively that hydraulic fluid port B emptying phenomenon can not occur when oil hydraulic motor 6 idle running, thereby can prolong the working life of oil hydraulic motor 6.
To shown in Figure 5, be serially connected with second relief valve 24 that is used to realize overload protection as Fig. 3 on the hydraulic pipe line of second oil hydraulic pump 8, this second relief valve 24 can play the effect of safety valve.In addition, can also be provided with the pressure measurement branch road on the hydraulic pipe line of second oil hydraulic pump 8, this pressure measurement branch road is provided with second pressure gauge 25, and this second pressure gauge 25 is used to measure the pumping pressure of second oil hydraulic pump 8.
Described first oil hydraulic pump 3 can be metering pump, also can be variable displacement pump, selects according to concrete needs.The structure of described first oil hydraulic pump 3, oil hydraulic motor 6, transfer case 7, second oil hydraulic pump 8, first cartridge valve 12, second cartridge valve 13, selector valve 11, first one-way valve 19, second one-way valve 10, two position three way directional control valve 15, first selector valve 17 and second selector valve 18 is conventionally known to one of skill in the art, does not repeat them here.Described operation element 14 is generally the pumping oil cylinder of concrete pumping equipment.In addition, the reference character 26 that is not illustrated among the figure is represented fuel tank, and reference character 27 is represented filter, and the 26S Proteasome Structure and Function of these two hydraulic element is conventionally known to one of skill in the art, does not repeat them here.
In addition, the utility model also provides a kind of concrete pumping equipment, and this concrete pumping equipment comprises above-mentioned Power Drive Unit.Described concrete pumping equipment can be all kinds, for example Vehicular concrete pump or concrete pump truck.
The operation of the Power Drive Unit of the concrete pumping equipment that the utility model provides is described below in conjunction with Fig. 2 to Fig. 5.
Extremely shown in Figure 5 as Fig. 2, when adopting article one power output route, start first power source 1, by hydraulic control component second hydraulic pipe line 9 is disconnected, simultaneously first hydraulic pipe line 4 is connected, like this, first power source 1 drives 3 work of first oil hydraulic pump, first oil hydraulic pump 3 drives oil hydraulic motor 6 by first hydraulic pipe line 4, and oil hydraulic motor 6 drives second oil hydraulic pump, 8, the second oil hydraulic pumps 8 by transfer case 7 again and drives operation element 14.When adopting second power output route, start second power source 2, when second power source 2 is engine in situ, also to disconnect being connected of second power source 2 and rear axle propeller shaft by transfer case 7, make second power source 2 drive second oil hydraulic pump, 8, the second oil hydraulic pumps 8 and drive operation element 14 by transfer case 7.When adopting the 3rd power output route, start first power source 1 and second power source 2, by hydraulic control component first hydraulic pipe line 4 is disconnected, simultaneously second hydraulic pipe line 9 is connected, when second power source 2 is engine in situ, also to disconnect being connected of second power source 2 and rear axle propeller shaft by transfer case 7, like this, first power source 1 drives 3 work of first oil hydraulic pump, second power source 2 drives 8 work of second oil hydraulic pump by transfer case 7, the fluid interflow that the fluid that first oil hydraulic pump 3 is discharged is discharged by second hydraulic pipe line 9 and second oil hydraulic pump 8, the fluid behind the interflow drives operation element 14 work jointly.
Below describe preferred implementation of the present utility model in conjunction with the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
In addition, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (12)

1. the Power Drive Unit of a concrete pumping equipment, this device comprises first power source (1), second power source (2), first oil hydraulic pump (3), oil hydraulic motor (6), transfer case (7) and second oil hydraulic pump (8), described first power source (1) is by be in transmission connection first power intake of described transfer case (7) of described first oil hydraulic pump (3) and oil hydraulic motor (6), be in transmission connection second power intake of described transfer case (7) of described second power source (2), the clutch end of described transfer case (7) described second oil hydraulic pump (8) that is in transmission connection, described second oil hydraulic pump (8) is by hydraulic driving pipeline (16) hydraulic driving operation element (14), it is characterized in that
The oil outlet hydraulic pressure of described first oil hydraulic pump (3) is connected to described hydraulic driving pipeline (16).
2. device according to claim 1, it is characterized in that, this device comprises hydraulic control component, and the oil outlet that is used to control described first oil hydraulic pump (3) optionally is communicated with the filler opening of described oil hydraulic motor (6) or is communicated with described hydraulic driving pipeline (16).
3. device according to claim 2, it is characterized in that, described hydraulic control component comprises first cartridge valve (12) and second cartridge valve (13), two actuator ports of described first cartridge valve (12) are connected with the oil outlet of described first oil hydraulic pump (3) and the filler opening hydraulic pressure of described oil hydraulic motor (6) respectively, and two actuator ports of described second cartridge valve (13) are connected with described hydraulic driving pipeline (16) hydraulic pressure with the oil outlet of described first oil hydraulic pump (3) respectively.
4. device according to claim 3, it is characterized in that, described hydraulic control component comprises selector valve (11), and two actuator ports of this selector valve (11) are connected with the control port of described first cartridge valve (12) and the control port hydraulic pressure of described second cartridge valve (13) respectively.
5. device according to claim 4 is characterized in that, the filler opening hydraulic pressure of described selector valve (11) is connected to the oil outlet of described first oil hydraulic pump (3).
6. device according to claim 5 is characterized in that, the filler opening hydraulic pressure of described selector valve (11) is connected to the oil outlet of described second oil hydraulic pump (8).
7. device according to claim 6, it is characterized in that, be serially connected with first one-way valve (19) on the pipeline between the oil outlet of the filler opening of described selector valve (11) and described first oil hydraulic pump (3), be serially connected with second one-way valve (10) on the pipeline between the oil outlet of the filler opening of described selector valve (11) and described second oil hydraulic pump (8).
8. device according to claim 2, it is characterized in that, described hydraulic control component comprises two position three way directional control valve (15), the filler opening hydraulic pressure of this two position three way directional control valve (15) is connected to the oil outlet of described first oil hydraulic pump (3), an actuator port hydraulic pressure is connected to the filler opening of described oil hydraulic motor (6), and another actuator port hydraulic pressure is connected to described hydraulic driving pipeline (16).
9. device according to claim 1, it is characterized in that, be serially connected with first selector valve (17) on the described hydraulic driving pipeline (16), the oil outlet hydraulic pressure of described first oil hydraulic pump (3) is connected to the described hydraulic driving pipeline (16) between described first selector valve (17) and described second oil hydraulic pump (8).
10. device according to claim 1, it is characterized in that, be serially connected with first selector valve (17) on the described hydraulic driving pipeline (16), the oil outlet of described first oil hydraulic pump (3) is connected to described hydraulic driving pipeline (16) between described first selector valve (17) and the described operation element (14) by second selector valve (18) hydraulic pressure.
11. device according to claim 1 is characterized in that, described first power source (1) is a motor, and described second power source (2) is a motor.
12. a concrete pumping equipment is characterized in that, this concrete pumping equipment comprises any described Power Drive Unit among the claim 1-11.
CN201120047400XU 2011-02-24 2011-02-24 Power drive unit of concrete pumping equipment and concrete pumping equipment Expired - Lifetime CN201963620U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120047400XU CN201963620U (en) 2011-02-24 2011-02-24 Power drive unit of concrete pumping equipment and concrete pumping equipment

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Application Number Priority Date Filing Date Title
CN201120047400XU CN201963620U (en) 2011-02-24 2011-02-24 Power drive unit of concrete pumping equipment and concrete pumping equipment

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CN201963620U true CN201963620U (en) 2011-09-07

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CN201120047400XU Expired - Lifetime CN201963620U (en) 2011-02-24 2011-02-24 Power drive unit of concrete pumping equipment and concrete pumping equipment

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102650303A (en) * 2011-02-24 2012-08-29 中联重科股份有限公司 Power-driven device of concrete pumping equipment and concrete pumping equipment
CN104405134A (en) * 2014-09-17 2015-03-11 三一汽车制造有限公司 Power system and power control method of vehicle-mounted concrete pumping device
CN105626606A (en) * 2014-10-27 2016-06-01 中联重科股份有限公司 Hydraulic system of concrete pumping equipment and concrete pumping equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102650303A (en) * 2011-02-24 2012-08-29 中联重科股份有限公司 Power-driven device of concrete pumping equipment and concrete pumping equipment
WO2012113208A1 (en) * 2011-02-24 2012-08-30 长沙中联重工科技发展股份有限公司 Power drive device of concrete pumping equipment and concrete pumping equipment
CN104405134A (en) * 2014-09-17 2015-03-11 三一汽车制造有限公司 Power system and power control method of vehicle-mounted concrete pumping device
CN105626606A (en) * 2014-10-27 2016-06-01 中联重科股份有限公司 Hydraulic system of concrete pumping equipment and concrete pumping equipment

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