CN210423189U

CN210423189U - Double-power pumping hydraulic system and concrete construction equipment

Info

Publication number: CN210423189U
Application number: CN201921319889.4U
Authority: CN
Inventors: 曹诗军; 韩玮; 王航; 刘锋; 文琪
Original assignee: Hunan Xifa Engineering Machinery Co ltd; Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Hunan Xifa Engineering Machinery Co ltd; Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-04-28
Anticipated expiration: 2029-08-14

Abstract

The utility model relates to a concrete construction machinery discloses a double dynamical pump sending hydraulic system, including first power device, first work pump package, second power device, second work pump package, pumping unit, boom system, running gear and braking a steering system, pumping unit includes pump sending hydraulic system, distribution hydraulic system and stirring and washs hydraulic system, running gear with first work pump package is connected, pump sending hydraulic system, boom system, distribution hydraulic system, stirring and washing hydraulic system via first work pump package and emergency unit with first power device one-way conduction connection or via second work pump package with second power device one-way conduction connection, when second power device can't work, provide emergent power by first power device; the utility model discloses double dynamical pump sending hydraulic system can effectively provide emergency operation, and it is lower to make and the maintenance cost moreover. The utility model also discloses a concrete construction equipment.

Description

Double-power pumping hydraulic system and concrete construction equipment

Technical Field

The utility model relates to a concrete construction machinery specifically, relates to a double dynamical pump sending hydraulic system, in addition, still relates to a concrete construction equipment.

Background

Concrete spraying machines are a common type of concrete construction machine. The concrete sprayer utilizes compressed air to continuously convey concrete along the pipeline and sprays the concrete onto a construction surface to form a concrete supporting layer; the concrete sprayer is widely applied to lining construction of underground engineering, roadways, tunnels, culverts and the like.

On a concrete sprayer using an engineering chassis, the chassis is provided with a diesel engine, a pumping upper assembly is also provided with a motor, the chassis diesel engine drives the chassis to walk, and the upper motor drives a pumping, distributing, stirring and cleaning system and an arm support hydraulic system; however, if the motor fails, much time, manpower and material resources are consumed, and certain loss is caused to equipment and a construction party; for example, a power failure condition sometimes occurs during tunnel construction, so that a motor cannot work, and a concrete pump truck cannot continue to pump concrete, and once the concrete is a quick-setting material, no matter for a construction party or for the pump truck, great loss can be caused, especially, in some construction sites, once the concrete is poured, the concrete is not allowed to stop, and the concrete must be poured once, and under the condition, the requirement on the continuous operation performance of the pump truck is extremely high; the common solution is to call other non-motor-driven pumping equipment, connect the pressure oil and oil return pipelines of the equipment to the hydraulic system of the faulty concrete sprayer, and drive the pumping and arm support systems; this is time and labor consuming and delays the work cycle.

In order to deal with emergency situations, an existing solution is to provide a set of special emergency equipment with an independent power system and a hydraulic system to be directly assembled on a concrete sprayer, and although the technical problem that the motor cannot continue to work after being out of order can be solved, the manufacturing and maintenance costs are high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a double dynamical pumping hydraulic system is provided, this double dynamical pumping hydraulic system can effectively solve the problem that can't continue the operation after the motor breaks down, moreover, makes and the maintenance cost is lower.

The utility model discloses further the technical problem that will solve provides a concrete construction equipment, and this concrete construction equipment has emergent operation mode, convenient operation.

In order to achieve the above object, a first aspect of the present invention provides a dual power pumping hydraulic system, which includes a first power device, a first working pump set, a second power device, a second working pump set, a pumping unit, a boom system, a traveling mechanism and a braking steering system, wherein the pumping unit includes a pumping hydraulic system, a distribution hydraulic system and a stirring and cleaning hydraulic system, the traveling mechanism is connected to the second working pump set, the first power device is connected to the pumping hydraulic system, the boom system, the distribution hydraulic system and the stirring and cleaning hydraulic system through the first working pump set, the second power device is connected to the pumping hydraulic system, the boom system, the distribution hydraulic system, the stirring and cleaning hydraulic system and the braking steering system through the second working pump set and an emergency unit in sequence, so that the second working pump group can be selectively in one-way communication connection with the pumping unit and the arm frame system or in communication with the brake steering system through the emergency unit.

Preferably, the emergency unit comprises a first emergency valve group and a second emergency valve group which are connected with a heat dissipation mechanism, and the first emergency valve group is connected to an oil path between the first working pump group and the stirring and cleaning hydraulic system, so that the first working pump group can be selectively communicated with the stirring and cleaning hydraulic system in a one-way mode or communicated with the heat dissipation mechanism through the first emergency valve group; the second emergency valve group is respectively connected with the first working pump group, the pumping hydraulic system, the boom system, the distribution hydraulic system and the brake steering system, so that the first working pump group can be selectively communicated with the pumping hydraulic system, the boom system and the distribution hydraulic system in a one-way mode or communicated with the brake steering system through the second emergency valve group.

More preferably, the first emergency valve group comprises a first reversing valve, and the first reversing valve comprises a first oil port connected with the first working pump group, a second oil port and a third oil port connected with the heat dissipation mechanism, so that the first oil port of the first reversing valve can be selectively communicated with the second oil port or the third oil port through switching of the first reversing valve; the second oil port of the first reversing valve is connected with the stirring and cleaning hydraulic system through a first one-way valve, so that hydraulic fluid can be unilaterally introduced into the stirring and cleaning hydraulic system through the first one-way valve.

Further, the first emergency valve group further comprises a first overflow valve, the first overflow valve is connected to the second oil port of the first reversing valve, and the first oil port of the first reversing valve is connected with the first pumping device of the first working pump group.

More preferably, the second emergency valve group comprises a second reversing valve and a third reversing valve, the second reversing valve comprises a first oil port, a second oil port and a third oil port which are connected with the first working pump group, and the second reversing valve can be selectively switched to enable the first oil port of the second reversing valve to be selectively communicated with the second oil port or the third oil port; the third reversing valve comprises a first oil port, a second oil port and a third oil port which are connected with the first working pump group, so that the first oil port of the third reversing valve can be selectively communicated with the second oil port or the third oil port through switching of the third reversing valve; a third oil port of the second reversing valve and a third oil port of the third reversing valve are both connected with the braking and steering system; a second oil port of the second reversing valve is connected with the arm support system through a second one-way valve, so that hydraulic fluid can be introduced into the arm support system in a single direction through the second one-way valve; and a second oil port of the third reversing valve is respectively connected with the distribution hydraulic system and the pumping hydraulic system through a third check valve and a fourth check valve, so that hydraulic fluid can be unidirectionally introduced into the distribution hydraulic system and the pumping hydraulic system.

As a preferred structure, the second emergency valve group further comprises a second overflow valve and a third overflow valve, the second overflow valve and the third overflow valve are respectively connected with the second oil port of the second reversing valve and the second oil port of the third reversing valve in a one-to-one correspondence manner, and the first oil port of the second reversing valve and the first oil port of the third reversing valve are respectively connected with the second pumping device and the third pumping device of the first working pump group in a one-to-one correspondence manner.

Specifically, the first power device is a diesel engine and is connected with the travelling mechanism through a fourth pumping device of the first working pump group.

Specifically, the second working pump group comprises a fifth pumping device, a sixth pumping device, a seventh pumping device and an eighth pumping device which are connected in series, and the fifth pumping device, the sixth pumping device, the seventh pumping device and the eighth pumping device are respectively connected with the pumping hydraulic system, the boom system, the distribution hydraulic system and the stirring and cleaning hydraulic system in a one-to-one correspondence manner through branch check valves.

Typically, the second power device is an electric motor, and the second power device is in driving connection with the fifth pumping device, the sixth pumping device, the seventh pumping device and the eighth pumping device.

The utility model discloses the second aspect provides a concrete construction equipment, including any one of the above-mentioned first aspect technical scheme double dynamical pumping hydraulic system.

Through the technical scheme, the dual-power pumping hydraulic system of the utility model is provided with the emergency unit between the first working pump group and the pumping hydraulic system, the boom system, the distribution hydraulic system, the stirring and cleaning hydraulic system and the braking and steering system, so that the two mutually independent hydraulic systems realize interconnection emergency, and the problem that the concrete cannot be continuously pumped due to power failure in the tunnel construction process and certain loss is caused to equipment and a construction party is effectively solved; when the emergency operation is not carried out, the pumping unit, the arm support system and the chassis hydraulic system are mutually independent and do not influence each other.

The branch check valves are respectively arranged between the second working pump group and the pumping hydraulic system, between the second working pump group and the arm support system, between the second working pump group and the distribution hydraulic system and between the second working pump group and the stirring and cleaning hydraulic system, so that hydraulic oil output by the first working pump group and the second working pump group can be effectively controlled to be accurately introduced into the pumping hydraulic system, the arm support system, the distribution hydraulic system and the stirring and cleaning hydraulic system, and hydraulic energy is effectively utilized.

Further advantages of the invention, as well as the technical effects of preferred embodiments, will be further explained in the following detailed description.

Drawings

FIG. 1 is a schematic diagram of a prior art diesel engine drive chassis hydraulic system;

FIG. 2 is a schematic diagram of a prior art motor-driven pumping uphole hydraulic system;

fig. 3 is a schematic diagram of the dual power pumping hydraulic system with emergency function of the present invention.

Description of the reference numerals

1 first power unit 2 second power unit

3 arm support system 4 travelling mechanism

5-brake steering system 61 pumping hydraulic system

62 distribution hydraulic system 63 stirring and cleaning hydraulic system

7 first emergency valve group of heat dissipation mechanism 81

82 second emergency valve group

83 first switching valve P1 first port of first switching valve

Second oil port of the first direction changing valve A1B 1 third oil port of the first direction changing valve

84 first overflow valve

85 second direction valve P2 first port of the second direction valve

Second oil port of A2 second direction changing valve B2 third oil port of second direction changing valve

86 third direction valve P3 first port of the third direction valve

Second port of the third direction valve A3B 3 third port of the third direction valve

87 second relief valve 88 third relief valve

9 first check valve 10 second check valve

20 third check valve 30 fourth check valve

40-branch check valve

101 first pumping device 102 second pumping device

103 third pumping means 104 fourth pumping means

105 fifth pumping means 106 sixth pumping means

107 seventh pumping means 108 eighth pumping means

1a diesel engine 2a first hydraulic pump

Heat dissipation motor 20a chassis walking motor of 10a diesel engine

30a braking and steering mechanism

3a electric device 4a second hydraulic pump

40a pumping system 50a boom hydraulic system

60a dispensing system 70a agitation cleaning system

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Furthermore, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicit indication of the number of technical features indicated, and therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth" may explicitly or implicitly include one or more of the features described.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

At first need explain, the utility model discloses a double dynamical pump sending hydraulic system belongs to the hydraulic pressure field, and to the technical personnel in this field, its essential technical conception lies in the hydraulic pressure relation of connection, and the technical personnel in the field are acquainted with the utility model discloses a after the technical concept, also can carry out simple replacement with oil circuit or valve etc. to realize the utility model discloses an emergent function, this belongs to the utility model discloses a protection range equally. The related hydraulic components, such as the reversing valve, the relief valve, the motor, the hydraulic pump, etc., are well known to those skilled in the art, and are also common components in the existing hydraulic system, so that the following description will only briefly describe these hydraulic components, and the description will focus on the original hydraulic connection relationship of the dual power pumping hydraulic system of the present invention.

Fig. 1 shows a schematic diagram of a hydraulic system of a diesel engine-driven chassis in the prior art, wherein a diesel engine 1a is connected with a diesel engine heat dissipation motor 10a, a chassis traveling motor 20a and a braking and steering mechanism 30a through a first hydraulic pump 2a to form the chassis hydraulic system; fig. 2 shows a schematic diagram of a motor-driven pumping hydraulic system in the prior art, wherein an electric device 3a is connected with a pumping system 40a, a boom hydraulic system 50a, a distribution system 60a and a stirring cleaning system 70a through a second hydraulic pump 4a to form the pumping hydraulic system; on a conventional concrete sprayer, the two hydraulic systems are independent from each other; when the tunnel is constructed, power failure sometimes occurs, so that the motor cannot operate, residual concrete exists in the concrete cylinder and the concrete conveying pipe, and huge loss is caused to equipment and a construction party if the residual concrete is not cleaned; the common solution is to call other non-motor-driven pumping equipment, connect the pressure oil and oil return pipelines of the equipment to the hydraulic system of the faulty concrete sprayer, and drive the pumping and arm support systems; the method is time-consuming and labor-consuming, influences the construction period and causes larger energy loss; in addition, a set of special emergency equipment with an independent power system and a hydraulic system is assembled on the concrete sprayer, so that the concrete sprayer has wide applicability, but the manufacturing and maintenance costs are high.

To the emergency of above-mentioned concrete sprayer in tunnel construction, the utility model discloses creatively sets up emergency unit between chassis hydraulic system and pump sending facial make-up hydraulic system, when meeting with the power failure condition, starts emergency unit, provides hydraulic oil to pump sending facial make-up hydraulic system through chassis hydraulic system, clears up the remaining concrete in the concrete conveying pipe fast to withdraw the cantilever crane, reduce the loss to equipment and construction side, it is right to combine the figure below the utility model discloses a technical concept does further the explanation.

As shown in fig. 3, the present invention discloses a dual-power hydraulic pumping system, which comprises a first power device 1, a first working pump set, a second power device 2, a second working pump set, a pumping unit, a boom system 3, a traveling mechanism 4 and a brake steering system 5, wherein the pumping unit comprises a pumping hydraulic system 61, a distribution hydraulic system 62 and a stirring and cleaning hydraulic system 63, the traveling mechanism 4 is connected with the first working pump set, the first power device 1 is connected with the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62, the stirring and cleaning hydraulic system 63 and the brake steering system 5 via the first working pump set and an emergency unit in sequence, so that the first working pump set can be selectively connected with the pumping unit and the boom system 3 in a one-way conduction manner or communicated with the brake steering system 5 via the emergency unit; the second power device 2 is respectively in one-way communication connection with the pumping hydraulic system 61, the arm frame system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63 through a second working pump group.

In the above basic embodiment, an emergency unit is provided between the first working pump group and the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62, the agitation cleaning hydraulic system 63, and the brake steering system 5, so that the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62, and the agitation cleaning hydraulic system 63 can receive the hydraulic oil provided by the first power device 1 driving the first working pump group or the hydraulic oil provided by the second power device 2 driving the second working pump group for dual-power pumping hydraulic drive, so that the pumping hydraulic system has two working modes, one is a normal working mode, i.e. the second power device 2 driving the second working pump group, and the hydraulic oil provided by the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62, and the agitation cleaning hydraulic system 63 makes the concrete output pipe lay along the boom, carrying out concrete material distribution work, cleaning residual concrete after the concrete distribution work is finished, and withdrawing the arm support; one is an emergency working mode, at this time, the second power device 2 cannot provide power, the first power device 1 drives the first working pump group through the emergency unit, hydraulic oil provided for the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63 can be supplied, under the condition that the second power device 2 does not work, residual concrete in the concrete conveying pipe can be rapidly cleaned, the boom is retracted, and loss to equipment and a construction party is reduced; the system comprises a first power device 2, a first working pump group, a pumping hydraulic system 61, an arm frame system 3, a distribution hydraulic system 62 and a stirring and cleaning hydraulic system 63, wherein the pumping and arm frame hydraulic system is formed by the second power device 2, the second working pump group, the pumping hydraulic system 61, the arm frame system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63, and a chassis hydraulic system is formed by the first power device 1, the first working pump group and a brake steering system 5; in addition, the first working pump group and the second working pump group are respectively connected with the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63 in a one-way conduction mode, so that the flow direction of hydraulic oil is controlled, the hydraulic oil cannot be introduced into elements irrelevant to the working of the hydraulic systems, and the utilization rate of hydraulic energy is effectively guaranteed.

As a preferred embodiment, the emergency unit includes a first emergency valve group 81 and a second emergency valve group 82, specifically, the first emergency valve group 81 is connected to an oil path between the first working pump group and the stirring and cleaning hydraulic system 63, the second emergency valve group 82 is respectively connected to the first working pump group, the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the brake steering system 5, in order to dissipate heat from the first power device 1, the first working pump group may be connected to a heat dissipation mechanism 7, and preferably, the first working pump group is connected to the heat dissipation mechanism 7 through the first emergency valve group 81; in this way, the first emergency valve group 81 enables the first working pump group to be selectively communicated with the stirring and cleaning hydraulic system 63 in a one-way mode or communicated with the heat dissipation mechanism 7; the first working pump group can also be selectively communicated with the pumping hydraulic system 61, the boom system 3 and the distribution hydraulic system 62 in a single direction or communicated with the brake steering system 5 through the second emergency valve group 82. It should be noted that, in the above specific embodiment, the emergency unit is divided into two emergency valve banks, namely, the first emergency valve bank 81 and the second emergency valve bank 82, within the technical concept scope of the present invention, the emergency valve banks are not limited to two, and may be connected to the first working pump group, the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62, the stirring and cleaning hydraulic system 63, the heat dissipation mechanism 7 and the braking and steering system 5 respectively through one emergency valve bank, and may be switched to the emergency working mode, and so on, the number of the emergency valve banks may be set more as required; in addition, the heat dissipating mechanism 7 may have various specific types of devices, and preferably, a heat dissipating fan driven by a hydraulic motor is used.

Specifically, the first emergency valve group 81 includes a first direction valve 83, the first direction valve 83 includes a first oil port P1, a second oil port a1 and a third oil port B1, the first oil port P1 of the first direction valve 83 is connected to a first working pump group, the third oil port B1 of the first direction valve 83 is connected to the heat dissipation mechanism 7, and through switching of the first direction valve 83, the first oil port P1 of the first direction valve 83 can be selectively communicated with the second oil port a1 or the third oil port B1, so that in the emergency working mode, the first working pump group provides hydraulic oil for the stirring and cleaning hydraulic system 63; further, the first check valve 9 is arranged between the second oil port a1 of the first direction changing valve 83 and the stirring and cleaning hydraulic system 63 to ensure that the first work pump set is communicated with the stirring and cleaning hydraulic system 63 in a one-way mode, so that the hydraulic oil can be introduced into the stirring and cleaning hydraulic system 63 in a one-way mode through the first check valve 9, and the hydraulic oil flows in the hydraulic oil path according to a set direction.

Further, the first emergency valve group 81 may further include a first overflow valve 84, and the first overflow valve 84 may be connected to the second port a1 of the first direction valve 83 to prevent the oil pressure at the second port a1 of the first direction valve 83 from being too large, so as to protect the hydraulic oil path, in a specific embodiment, the first port P1 of the first direction valve 83 is connected to the first pumping device 101 of the first working pump group.

In addition, the second emergency valve group 82 includes a second directional valve 85 and a third directional valve 86, the second directional valve 85 includes a first port P2, a second port a2 and a third port B2, the first port P2 of the second directional valve 85 is connected with the first working pump group, and the first port P2 of the second directional valve 85 can be selectively communicated with the second port a2 or the third port B2 thereof by switching the second directional valve 85; the third reversing valve 86 comprises a first oil port P3, a second oil port A3 and a third oil port B3, the first oil port P3 of the third reversing valve 86 is connected with the first work pump group, and the first oil port P3 of the third reversing valve 86 can be selectively communicated with the second oil port A3 or the third oil port B3 thereof through the switching of the third reversing valve 86; the third oil port B2 of the second reversing valve 85 and the third oil port B3 of the third reversing valve 86 are both connected with the brake steering system 5; further, the second oil port a2 of the second direction valve 85 is connected to the boom system 3 through the second check valve 10, so that hydraulic oil can be unilaterally introduced into the boom system 3 through the second check valve 10; the second port a3 of the third directional control valve 86 is connected to the distribution hydraulic system 62 and the pumping hydraulic system 61 through the third check valve 20 and the fourth check valve 30, respectively, in one-to-one correspondence, so that the hydraulic fluid can be introduced into the distribution hydraulic system 62 and the pumping hydraulic system 61 in one direction.

Further, the second emergency valve group 82 may further include a second overflow valve 87 and a third overflow valve 88, where the second overflow valve 87 and the third overflow valve 88 are respectively connected to the second port a2 of the second direction valve 85 and the second port A3 of the third direction valve 86 in a one-to-one correspondence manner, so as to prevent the oil pressure at the second port a2 of the second direction valve 85 and the second port A3 of the third direction valve 86 from being too large, and protect the hydraulic oil path; the first port P2 of the second direction valve 85 and the first port P3 of the third direction valve 86 are connected to the second pumping devices 102 and the third pumping devices 103 of the first work pump group in a one-to-one correspondence.

In the specific embodiment, the first power device 1 is a diesel engine, the first power device 1 is connected in series with the first pumping device 101, the second pumping device 102, the third pumping device 103 and the fourth pumping device 104 of the first working pump group to provide driving force for the first pumping device 101, the second pumping device 102, the third pumping device 103 and the fourth pumping device 104, and the fourth pumping device 104 is connected with the traveling mechanism 4.

It should be noted that, no matter the manual reversing valve, the motor-driven reversing valve, the electromagnetic-driven reversing valve, the hydraulic reversing valve or the electro-hydraulic reversing valve, the main function is to realize the on-off of the passage or change the flow direction, therefore, the reversing valve of the utility model is applicable; the reversing valves such as the first reversing valve 83, the second reversing valve 85 and the third reversing valve 86 in the utility model are preferably electromagnetic reversing valves, and the electromagnetic reversing valves are controlled by arranging electrical switches; in a specific embodiment, the first direction valve 83, the second direction valve 85, and the third direction valve 86 are two-position three-way valves, or two-position four-way valves with one oil port blocked, and so on, or other hydraulic valves capable of achieving equivalent functions.

In a specific implementation manner, the utility model discloses a first switching-over valve 83, second switching-over valve 85 and the three switching-over valve of third switching-over valve 86 are connected with first pumping installations 101, second pumping installations 102, third pumping installations 103 one-to-one respectively, and are connected with stirring washing hydraulic system 63, cantilever crane system 3, pump sending hydraulic system 61 and distribution hydraulic system 62 respectively, through the switching of controlling first switching-over valve 83, second switching-over valve 85 and third switching-over valve 86, can realize the switching of normal operating mode and emergent operating mode; moreover, when the stirring cleaning hydraulic system 63, the boom system 3, the pumping hydraulic system 61 and the distributing hydraulic system 62 have faults, hydraulic oil can be respectively introduced into the stirring cleaning hydraulic system 63, the boom system 3, the pumping hydraulic system 61 and the distributing hydraulic system 62 through the first reversing valve 83, the second reversing valve 85 and the third reversing valve 86, the position of the system with the faults is judged, the fault diagnosis capability is improved, and the fault elimination time is shortened; in addition, the number of the reversing valves can be set according to requirements, for example, the reversing valve and the one-way valve are respectively connected with the stirring and cleaning hydraulic system 63, the boom system 3, the pumping hydraulic system 61 and the distribution hydraulic system 62, so that the switching between the normal working mode and the emergency working mode can be realized, the residual concrete in the concrete conveying pipe can be quickly cleaned under the condition that the second power device 2 does not work, the boom can be retracted, and the loss to equipment and a construction party is reduced; by analogy, other values can be selected for the number of the reversing valves and the one-way valves.

Specifically, the second working pump group comprises a fifth pumping device 105, a sixth pumping device 106, a seventh pumping device 107 and an eighth pumping device 108 which are connected in series, wherein the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107 and the eighth pumping device 108 are respectively connected with the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63 in a one-to-one correspondence manner through four branch check valves 40; in a normal working mode, the second power device 2 can drive the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107 and the eighth pumping device 108 to unidirectionally introduce hydraulic oil into the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63, so as to ensure the concrete distribution work.

It can be understood that, under the technical concept of the present invention, the number of the pumping devices and the check valves can be set as required, in the specific embodiment, eight pumping devices and eight check valves are provided, which is convenient for independently controlling each system and mechanism, and reduces the influence of the damage of elements on the whole hydraulic system; certainly, two pumping devices and two one-way valves can be arranged, the two pumping devices belong to a first working pump group and a second working pump group respectively, and the connection points of the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63 can be positioned on an oil path between the two one-way valves, so that the hydraulic system can be arranged more simply; the selection of other pumping means and the number of one-way valves may be analogized to. Wherein, the first pumping device 101, the second pumping device 102, the third pumping device 103, the fourth pumping device 104, the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107 and the eighth pumping device 108 can adopt hydraulic pumps, preferably, the fourth pumping device 104 can adopt a bidirectional variable hydraulic pump, and the fifth pumping device 105 can adopt a unidirectional variable hydraulic pump. In addition, in the specific embodiment, in the normal operation mode, the first check valve 9, the second check valve 10, the third check valve 20, and the fourth check valve 30 function to prevent the hydraulic oil passing through the four branch check valves 40 from entering the first emergency valve group 81 and the second emergency valve group 82, and in the emergency operation mode, the branch check valve 40 functions to prevent the hydraulic oil passing through the first check valve 9, the second check valve 10, the third check valve 20, and the fourth check valve 30 from entering the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107, and the eighth pumping device 108; according to needs, can also replace above-mentioned check valve through the switching-over valve, through the break-make of control switching-over valve, can realize above-mentioned one-way function that switches on equally, that is to say the utility model discloses an in the technical concept, technical scheme can carry out simple deformation, all belongs to the utility model discloses a protection scope.

In the specific embodiment, the second power unit 2 is an electric motor, and the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107, and the eighth pumping device 108 are driven by the second power unit 2.

The utility model discloses a double dynamical pump sending hydraulic system of preferred embodiment, including first power device 1, first work pump package, second power device 2, second work pump package, pumping unit, cantilever crane system 3, running gear 4, braking steering system 5 and heat dissipation mechanism 7, first power device 1 is diesel engine, second power device 2 is the motor, pumping unit includes pumping hydraulic system 61, distribution hydraulic system 62 and stirring washs hydraulic system 63, first work pump package includes first pumping device 101, second pumping device 102, third pumping device 103 and fourth pumping device 104, second work pump package includes fifth pumping device 105, sixth pumping device 106, seventh pumping device 107 and eighth pumping device 108, running gear 4 is connected with fourth pumping device 104, running gear 4 can adopt the running motor, drive the running motor through fourth pumping device 104, the first pumping device 101 is sequentially connected with the stirring and cleaning hydraulic system 63 through a first reversing valve 83 and a first one-way valve 9, the second pumping device 102 is sequentially connected with the boom system 3 through a second reversing valve 85 and a second one-way valve 10, the third pumping device 103 is sequentially connected with the distribution hydraulic system 62 through a third reversing valve 86 and a third one-way valve 20, a fourth one-way valve 30 and a pumping hydraulic system 61 are further connected in parallel on an oil path between the third reversing valve 86 and the third one-way valve 20, the first reversing valve 83 is further connected with a heat dissipation mechanism 7, and the third reversing valve 86 is further connected with the brake steering system 5; in an emergency working mode, the first reversing valve 83, the second reversing valve 85 and the third reversing valve 86 are controlled to change the flowing direction of hydraulic oil in an oil way, the first power device 1 drives the first pumping device 101, the second pumping device 102 and the third pumping device 103, the hydraulic oil is introduced into the stirring cleaning hydraulic system 63, the boom system 3, the pumping hydraulic system 61 and the distribution hydraulic system 62, residual concrete in a concrete conveying pipe is quickly cleaned, the boom is retracted, and loss to equipment and a construction party is reduced; and the hydraulic oil in the oil circuit can not flow into the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107 and the eighth pumping device 108, so as to precisely control the flow of the hydraulic oil and ensure that the hydraulic energy is effectively utilized, wherein the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107 and the eighth pumping device 108 are respectively connected with the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63 through four branch check valves 40, in a normal working mode, the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107 and the eighth pumping device 108 are driven by the second power device 2 to provide the hydraulic oil for the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63 to stir the concrete, the boom is unfolded to enable the concrete output pipe to be laid along the boom, carrying out concrete material distribution work, cleaning residual concrete after the concrete distribution work is finished, and withdrawing the arm support; the utility model discloses double dynamical pumping hydraulic system creatively sets up first switching-over valve 83, second switching-over valve 85 and third switching-over valve 86 between two hydraulic system, makes the double dynamical pumping hydraulic system of the utility model have the emergency function, and this kind of design cost is low, and convenient operation, just can switch to the emergency work mode through the electrical switch, can guarantee during the power failure that the construction continues to go on, clears up the residual concrete in the concrete conveying pipe fast, and withdraws the cantilever crane; under the normal working mode, the two hydraulic systems are mutually independent and do not influence each other.

For easy understanding, the operation of the dual power pumping hydraulic system of the present invention is described below.

In a normal working mode, the diesel engine, the first pumping device 101, the second pumping device 102, the third pumping device 103 and the fourth pumping device 104 do not work, the first reversing valve 83, the second reversing valve 85 and the third reversing valve 86 are powered off, and corresponding oil paths among the first pumping device 101, the second pumping device 102 and the third pumping device 103, the stirring and cleaning hydraulic system 63, the boom system 3, the pumping hydraulic system 61 and the distribution hydraulic system 62 are disconnected; at this time, the motor works to drive the fifth pumping device 105, the sixth pumping device 106, the seventh pumping device 107 and the eighth pumping device 108, hydraulic oil is respectively and unidirectionally introduced into the pumping hydraulic system 61, the boom system 3, the distribution hydraulic system 62 and the stirring and cleaning hydraulic system 63 to stir concrete, the boom is unfolded to enable the concrete output pipe to be laid along the boom, concrete distribution work is carried out, residual concrete is cleaned after the concrete distribution work is finished, and the boom is retracted;

when the equipment needs to be moved, the motor stops working, the diesel engine works, the fourth pumping device 104 drives the travelling mechanism 4, the second pumping device 102 and the third pumping device 103 are converged to drive the braking steering system 5, and meanwhile, the first pumping device 101 drives the heat dissipation mechanism 7 to dissipate heat of the diesel engine;

when a power failure condition occurs, the motor cannot work, the electric switch is started, and emergency operation is achieved, namely the first reversing valve 83, the second reversing valve 85 and the third reversing valve 86 are electrified to execute left-position function, the first pumping device 101 is in one-way conduction with the stirring and cleaning hydraulic system 63 through the first reversing valve 83, the second pumping device 102 is in one-way conduction with the boom system 3 through the second reversing valve 85, the third pumping device 103 is in one-way conduction with the pumping hydraulic system 61 and the distribution hydraulic system 62 through the third reversing valve 86 respectively, the diesel engine is started, residual concrete in the concrete conveying pipe is rapidly cleaned, the boom is retracted, and loss to equipment and a construction party is reduced.

The utility model discloses a concrete construction equipment, including any one of the above-mentioned technical scheme double dynamical pumping hydraulic system, consequently have all beneficial effects that the technical scheme of the above-mentioned double dynamical pumping hydraulic system embodiment brought at least.

For the technical scheme of the special emergency equipment that directly assembles one set and have independent driving system and hydraulic system on concrete sprayer, the utility model discloses a concrete construction equipment adopts double dynamical pump sending hydraulic system, has simplified the hydraulic structure, and it is with low costs to make and maintain, the operation of being convenient for.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A double-power pumping hydraulic system comprises a first power device (1), a first working pump group, a second power device (2), a second working pump group, a pumping unit, a boom system (3), a travelling mechanism (4) and a braking and steering system (5), wherein the pumping unit comprises a pumping hydraulic system (61), a distribution hydraulic system (62) and a stirring and cleaning hydraulic system (63), and the travelling mechanism (4) is connected with the first working pump group, and is characterized in that the first power device (1) is respectively connected with the pumping hydraulic system (61), the boom system (3), the distribution hydraulic system (62), the stirring and cleaning hydraulic system (63) and the braking and steering system (5) through the first working pump group and an emergency unit in sequence so that the first working pump group can be selectively in one-way conduction connection with the pumping unit and the boom system (3) or in one-way conduction connection with the braking and steering system through the emergency unit (5) Communicating; the second power device (2) is in one-way communication connection with the pumping hydraulic system (61), the arm frame system (3), the distribution hydraulic system (62) and the stirring and cleaning hydraulic system (63) through the second working pump group.

2. The dual-power pumping hydraulic system as claimed in claim 1, wherein the emergency unit comprises a first emergency valve group (81) and a second emergency valve group (82) connected with a heat dissipation mechanism (7), the first emergency valve group (81) is connected to an oil path between the first working pump group and the stirring cleaning hydraulic system (63), so that the first working pump group can be selectively communicated with the stirring cleaning hydraulic system (63) in a one-way mode or communicated with the heat dissipation mechanism (7) through the first emergency valve group (81); the second emergency valve group (82) is respectively connected with the first working pump group, the pumping hydraulic system (61), the boom system (3), the distribution hydraulic system (62) and the brake steering system (5), so that the first working pump group can be selectively communicated with the pumping hydraulic system (61), the boom system (3) and the distribution hydraulic system (62) in a one-way mode or communicated with the brake steering system (5) through the second emergency valve group (82).

3. The dual power pumping hydraulic system as claimed in claim 2, characterized in that the first emergency valve group (81) comprises a first reversing valve (83), and the first reversing valve (83) comprises a first oil port (P1) connected with the first working pump group, a second oil port (A1) and a third oil port (B1) connected with the heat dissipation mechanism (7), so that the first oil port (P1) of the first reversing valve (83) can be selectively communicated with the second oil port (A1) or the third oil port (B1) through switching of the first reversing valve (83); the second port (A1) of the first directional valve (83) is connected with the mixing and cleaning hydraulic system (63) through a first one-way valve (9) so that hydraulic fluid can be unilaterally introduced into the mixing and cleaning hydraulic system (63) through the first one-way valve (9).

4. The dual power pumping hydraulic system of claim 3, characterized in that the first emergency valve group (81) further comprises a first overflow valve (84), the first overflow valve (84) is connected to the second port (A1) of the first direction valve (83), and the first port (P1) of the first direction valve (83) is connected to the first pumping device (101) of the first working pump group.

5. The dual power pumping hydraulic system of claim 2, wherein the second emergency valve group (82) comprises a second directional valve (85) and a third directional valve (86), the second directional valve (85) comprises a first port (P2), a second port (a2) and a third port (B2) connected with the first working pump group, and the second directional valve (85) can be selectively switched to enable the first port (P2) of the second directional valve (85) to selectively communicate with the second port (a2) or the third port (B2) thereof; the third reversing valve (86) comprises a first oil port (P3), a second oil port (A3) and a third oil port (B3) which are connected with the first work pump group, so that the first oil port (P3) of the third reversing valve (86) can be selectively communicated with the second oil port (A3) or the third oil port (B3) of the third reversing valve (86) through switching of the third reversing valve (86); the third oil port (B2) of the second reversing valve (85) and the third oil port (B3) of the third reversing valve (86) are both connected with the brake steering system (5);

a second oil port (A2) of the second reversing valve (85) is connected with the boom system (3) through a second check valve (10) so that hydraulic fluid can be unilaterally introduced into the boom system (3) through the second check valve (10); the second port (A3) of the third directional control valve (86) is connected with the distribution hydraulic system (62) and the pumping hydraulic system (61) through a third check valve (20) and a fourth check valve (30), respectively, so that hydraulic fluid can be unidirectionally introduced into the distribution hydraulic system (62) and the pumping hydraulic system (61).

6. The dual-power pumping hydraulic system as recited in claim 5, wherein the second emergency valve group (82) further comprises a second overflow valve (87) and a third overflow valve (88), the second overflow valve (87) and the third overflow valve (88) are respectively connected with the second oil port (A2) of the second reversing valve (85) and the second oil port (A3) of the third reversing valve (86) in a one-to-one correspondence manner, and the first oil port (P2) of the second reversing valve (85) and the first oil port (P3) of the third reversing valve (86) are respectively connected with the second pumping device (102) and the third pumping device (103) of the first working pump group in a one-to-one correspondence manner.

7. Double power pumped hydraulic system according to any one of claims 1 to 6, characterised in that the first power unit (1) is a diesel engine and that the first power unit (1) is connected to the running gear (4) via a fourth pumping device (104) of the first working pump group.

8. The dual-power pumping hydraulic system as claimed in any one of claims 1 to 6, characterized in that the second working pump group comprises a fifth pumping device (105), a sixth pumping device (106), a seventh pumping device (107) and an eighth pumping device (108) which are connected in series, and the fifth pumping device (105), the sixth pumping device (106), the seventh pumping device (107) and the eighth pumping device (108) are respectively connected with the pumping hydraulic system (61), the boom system (3), the distribution hydraulic system (62) and the stirring and cleaning hydraulic system (63) in a one-to-one correspondence manner through branch check valves (40).

9. The dual power pumping hydraulic system of claim 8, characterized in that the second power unit (2) is an electric motor, and the second power unit (2) is drivingly connected to the fifth pumping unit (105), the sixth pumping unit (106), the seventh pumping unit (107) and the eighth pumping unit (108).

10. Concrete construction equipment, characterized in that it comprises a dual power pumped hydraulic system according to any one of claims 1 to 9.