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Forward-reverse rotation load sensitivity test system for closed type hydraulic pumps

A load-sensing and test system technology, applied in the direction of fluid pressure actuation system test, pump test, liquid variable capacity machinery, etc., to achieve the effect of wide range of test applications and convenient operation

Active Publication Date: 2015-04-08
SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the current test system is difficult to meet the above requirements

Method used

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  • Forward-reverse rotation load sensitivity test system for closed type hydraulic pumps

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Embodiment Construction

[0024] Such as figure 1 As shown, the closed hydraulic pump forward and reverse load sensing test system of the present invention includes a main oil tank 100, a first test oil circuit 300, a second test oil circuit 400, a bridge circuit 500, a drain circuit 600 and a control oil circuit 700.

[0025] The bridge circuit 500 is composed of four first one-way valves F1, second one-way valve F2, third one-way valve F3, and fourth one-way valve F4 connected in sequence to form a closed circuit structure, wherein the adjacent one-way valves The first node J1, the second node J2, the third node J3, and the fourth node J4 are sequentially formed between them.

[0026] The first test oil circuit 300 includes a first flow meter L1, a first stop valve K1, a first temperature sensor W1, and a first pressure sensor P1. Wherein, one end of the first flow meter L1 is connected to the first main oil port of the product pump under test, and the other end is connected to the first cut-off va...

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Abstract

The invention discloses a forward-reverse rotation load sensitivity test system for closed type hydraulic pumps. The forward-reverse rotation load sensitivity test system comprises a main oil tank, a first test oil circuit, a second test oil circuit, a bridge oil circuit, an oil discharge circuit, a control oil circuit, a pressure oil supply circuit and a first X-port control oil circuit. The bridge oil circuit is in a closed circuit structure formed by sequential connection of a first check valve, a second check valve, a third check valve and a fourth check valve, and a first node, a second node, a third node and a fourth node are formed sequentially between adjacent check valves respectively. By the forward-reverse rotation load sensitivity test system for the closed type hydraulic pumps, forward-reverse rotation load sensitivity test of the closed type hydraulic pumps under the condition of load variation can be simulated, and performance test of hydraulic products under X-port control can be simulated as well. The forward-reverse rotation load sensitivity test system for the closed type hydraulic pumps has the advantages of extensive test use, convenience in operation and the like.

Description

technical field [0001] The invention belongs to the technical field of hydraulic product detection and relates to a forward and reverse load sensitive test system of a closed hydraulic pump. Background technique [0002] The hydraulic pump is the power component of the hydraulic system. It is driven by an engine or an electric motor. It sucks oil from the hydraulic oil tank, forms pressure oil and discharges it, and sends it to the actuator. The closed hydraulic pump adopts the pressure oil supply method when it is working. After the closed hydraulic pump is manufactured, it is necessary to test the load sensitivity of the pump, that is, to test the pressure, temperature and flow value of the hydraulic pump under the condition of load change at the beginning of the test. For the swash plate type plunger variable pump, it is also necessary to test the change of the flow rate of the pump through the X port. However, the current test system is difficult to meet the above requ...

Claims

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Application Information

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IPC IPC(8): F15B19/00F04B51/00
CPCF04B51/00F15B19/00
Inventor 王宗胜陈烨陈俊龙
Owner SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS
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