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Fluid transportation emergency device

An emergency device and fluid delivery technology, applied in mechanical equipment, buildings, building structures, etc., can solve problems such as the inability to continue pumping concrete, increase customer costs, increase equipment costs, etc., to improve continuous operation performance and resource utilization rate, reducing the effect of exclusion time

Inactive Publication Date: 2019-04-02
常州华睿新能源汽车发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the distribution valve of the dosing hydraulic system has the characteristics of large reversing pressure impact and high reversing frequency (20-30 times per minute). In actual work, the oil pump, charging solenoid valve and overflow of the dosing hydraulic system Valves and other failure rates are high. When the oil pump, pressure solenoid valve or overflow valve of the metering hydraulic system fails, the distribution valve will not be able to complete the swing and reversing, which will cause the concrete pump truck to continue pumping concrete. Concrete is a quick-setting material. Once this happens, it may cause heavy losses to both the construction party and the pump truck itself. Especially in some construction sites, once the concrete is poured, it is not allowed to stop and must be poured in one go. , in this case, the requirements for the continuous operation performance of the pump truck are extremely high
[0003] At present, one of the more commonly used methods is to spare a concrete pump, but this causes a decline in the efficiency of equipment assets and increases customer costs
In addition, when the oil pump, charging solenoid valve or overflow valve of the metering hydraulic system fails, measures such as replacing the oil pump, charging solenoid valve or overflow valve can also be taken, or special emergency valves can be installed for the metering hydraulic system in advance. Drive equipment, start professional emergency drive equipment to drive when there is a failure; in this scheme, the cycle of replacing the oil pump, reversing valve or relief valve is longer, and if there are no existing spare parts, the replacement cycle will be longer, which cannot meet It is required by the construction site, and pre-installed professional emergency drive equipment can quickly eliminate faults, but due to the low frequency of use and the increase in the cost of the entire equipment, it is difficult for general customers to accept

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] The invention discloses an emergency device for fluid delivery, such as figure 1 As shown, it at least includes: metering hydraulic system, boom hydraulic system and emergency oil circuit 01; wherein, metering hydraulic system includes oil pump 1, overflow valve 2, reversing valve 3, check valve 4 and distribution valve 10, etc. , the oil suction port of oil pump 1 is connected to the oil tank, the oil outlet port of oil pump 1 is connected to the oil inlet port of reversing valve 3, the working oil port of reversing valve 3 is connected to the inlet port of check valve 4, and the outlet of check valve 4 The outlet end is connected to the oil inlet pipeline of the distribution valve 10; the relief valve 2 is set on the oil outlet pipeline of the oil pump 1 to prevent excessive oil pressure on the oil outlet pipeline of the oil pump 1; the reversing valve 3 is a two-position four-way solenoid valve, When the power is on, the reversing valve 3 works in the right position....

Embodiment 2

[0026] Such as figure 2 As shown, the main difference between Embodiment 2 and Embodiment 1 is that the switch valve 7 adopts a manual valve, so that the operator can realize the emergency drive of the distribution valve hydraulic system through manual control according to the needs. The working principle of Embodiment 2 and the corresponding The technical effect can refer to embodiment 1 description.

Embodiment 3

[0028] Such as image 3 As shown, the main difference between embodiment 3 and embodiment 1 is that embodiment 3 adopts the delivery hydraulic system to supply oil to the metering hydraulic system in an emergency manner, and the delivery hydraulic system includes an oil pump 9, a one-way valve 8 and a pumping valve 12 etc., the oil pump 9 supplies oil to the pumping valve 12 through the check valve 8. When the oil pump 1, the relief valve 2 or the reversing valve 3 of the metering hydraulic system fail, the distribution valve 10 fails due to lack of pressure oil. When swinging and reversing, the pressure oil on the oil inlet line of the pumping valve 12 can be supplied to the distribution valve 10 through the emergency oil circuit 01 to ensure the normal operation of the distribution valve. The working principle and corresponding technical effects of Embodiment 3 can be referred to Embodiment 1.

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Abstract

The invention provides a fluid transportation emergency device. The fluid transportation emergency device comprises a proportioning hydraulic system, a transportation hydraulic system and an executinghydraulic system; and an emergency oil circuit is arranged among the transportation hydraulic system, the executing hydraulic system and the proportioning hydraulic system, and the an emergency oil circuit is used for supplying oil for the proportioning hydraulic system in emergency. According to the fluid transportation emergency device, the transportation hydraulic system and the executing hydraulic system of fluid machinery own are fully used for being as emergency oil sources, emergency supply is carried out on the proportioning hydraulic system through the emergency oil circuit to realize normal work of a distribution valve, it is ensured that the fluid machinery continuously transports fluid, the resource utilization rate is improved, and continuous operation performance of the fluid machinery is further improved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to an emergency device for fluid delivery. Background technique [0002] The concrete pump truck is a construction equipment that realizes concrete delivery through a pumping mechanism. Its hydraulic system generally includes four independent systems, namely, a delivery hydraulic system, a boom hydraulic system, a metering hydraulic system and a mixing hydraulic system. Among them, the distribution valve of the dosing hydraulic system has the characteristics of large reversing pressure impact and high reversing frequency (20-30 times per minute). In actual work, the oil pump, charging solenoid valve and overflow of the dosing hydraulic system Valves and other failure rates are high. When the oil pump, pressure solenoid valve or overflow valve of the metering hydraulic system fails, the distribution valve will not be able to complete the swing and reversing, which will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/02E04G21/02
CPCF15B1/02E04G21/02
Inventor 王明覃
Owner 常州华睿新能源汽车发展有限公司
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