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A dual power hydraulic system and concrete spraying vehicle

A hydraulic system and dual power technology, which is applied in earthwork drilling, fluid pressure actuators, wellbore lining, etc., can solve the problems of low work efficiency and achieve the effect of high emergency efficiency and free switching

Active Publication Date: 2017-06-16
HUNAN WUXIN TUNNEL INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the emergency power hydraulic system only operates when the main power hydraulic system fails, and in order to save the space on the concrete shotcrete truck, the emergency power hydraulic system has fewer pumps than the active power hydraulic system, and can only realize the concrete shotcrete truck. Simple action of pumping and boom, low working efficiency in emergency

Method used

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  • A dual power hydraulic system and concrete spraying vehicle
  • A dual power hydraulic system and concrete spraying vehicle
  • A dual power hydraulic system and concrete spraying vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] please if figure 1 As shown, the embodiment of the present invention provides a dual power hydraulic system, including the main pump set 2 combined with the main power source 1 and the emergency pump set 4 combined with the emergency power source 3, the main pump set 2 includes, and the main cylinder exchange The first main pump 21 connected to the valve, the second main pump 22 connected to the boom reversing valve, the third main pump 23 connected to the swing cylinder reversing valve; the emergency pump group 4 includes, and the control leg The first emergency pump 41 connected to the oil inlet of the multi-way valve 5; The oil outlet is connected, and the three-position four-way reversing valve 6 is respectively connected with the swing cylinder reversing valve, the boom reversing valve, and the master cylinder reversing valve, so that the first emergency pump 41 can drive the swinging cylinder reversing valve , boom reversing valve and master cylinder reversing va...

Embodiment 2

[0034] please if figure 2 As shown, the embodiment of the present invention provides a dual power hydraulic system, including the main pump set 2 combined with the main power source 1 and the emergency pump set 4 combined with the emergency power source 3, the main pump set 2 includes, and the main cylinder exchange The first main pump 21 connected to the reversing valve, the second main pump 22 connected to the reversing valve of the boom, the third main pump 23 connected to the reversing valve of the swing cylinder, and the fourth main pump connected to the auxiliary reversing valve 24. The emergency pump group 4 includes a first emergency pump 41 communicated with the oil inlet of the multi-way valve 5 controlling the outrigger, and a second emergency pump 42 connected with the reversing valve of the swing cylinder; the dual power hydraulic system also includes three One-position four-way reversing valve 6, the oil inlet port of three-position four-way reversing valve 6 is...

Embodiment 3

[0041] please if image 3 As shown, the dual power hydraulic system provided by the embodiment of the present invention is compared with the second embodiment, the difference is that

[0042] In the dual power hydraulic system provided by the embodiment of the present invention, a two-position four-way reversing valve 8 is arranged between the check valve of the oil outlet of the third main pump 23 and the reversing valve of the swing cylinder. A working oil outlet of the valve 8 is connected to the second emergency pump 42 .

[0043] The setting of the two-position four-way reversing valve 8 enables the first emergency pump 41 and the second emergency pump 42 to drive the reversing valve of the swing cylinder at the same time, so as to accelerate the reversing valve of the swing cylinder and improve the emergency efficiency.

[0044] The embodiment of the present invention also provides a concrete spraying vehicle, which adopts the above-mentioned power hydraulic system.

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Abstract

The application discloses a dual-power hydraulic system, which includes an emergency pump group, a first emergency pump connected to the oil inlet of the multi-way valve controlling the outrigger, a three-position four-way reversing valve, and a three-position four-way reversing valve. The reversing valves are respectively connected with the reversing valve of the swing cylinder, the reversing valve of the boom, and the reversing valve of the master cylinder, so that the first emergency pump can drive the reversing valve of the swing cylinder, the reversing valve of the boom and the reversing valve of the master cylinder; Check valves are all arranged at the oil outlet of the first main pump, the oil outlet of the second main pump, the oil outlet of the third main pump and the oil outlet of the first emergency pump. The dual-power hydraulic system provided by the invention has high working efficiency of the concrete shotcrete vehicle in emergency. At the same time, the present invention also provides a concrete spraying vehicle, which adopts the above-mentioned dual power hydraulic system.

Description

technical field [0001] The present application relates to the technical field of construction machinery, in particular to a dual-power hydraulic system, and also to a concrete spraying vehicle. Background technique [0002] In tunnel engineering construction, after tunnel excavation, in order to control the appropriate release and deformation of surrounding rock stress, increase structural safety and facilitate construction, immediately after tunnel excavation, a structural layer with low stiffness and a part of the permanent bearing structure is constructed, called initial support. [0003] The initial support in tunnel engineering generally adopts shotcrete anchor support. Shotcrete anchor support refers to the joint action of high-pressure sprayed cement concrete and metal anchor rods driven into the rock formation to strengthen the rock formation, which is divided into temporary support structures and permanent support structures. [0004] Among them, the high-pressure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/16F15B13/06E21D11/10
Inventor 王祥军龚俊伍锡文陶鹏宇
Owner HUNAN WUXIN TUNNEL INTELLIGENT EQUIP CO LTD
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