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Load sensitive test system for closed hydraulic pump

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

Active Publication Date: 2015-04-01
SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Load sensitive test system for closed hydraulic pump

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Embodiment Construction

[0023] Such as figure 1 As shown, the closed hydraulic pump 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 drain oil circuit 600 and a control oil circuit 700 .

[0024] 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 valve K1. The first temperature sensor W1 and the first pressure sensor P1 are installed on the first test oil circuit 300 between the first flow meter L1 and the first main oil port of the tested product.

[0025] The second test oil circuit 400 includes an oil return filter G1, a second flow meter L2, a second stop valve K2, a second temperature sensor W2, and a second pressure sensor P2. Wherein, ...

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Abstract

The invention discloses a load sensitive test system for a closed hydraulic pump. The load sensitive test system for the closed hydraulic pump comprises a main oil tank, a first test oil way, a second test oil way, an oil discharge way, a control oil way, a pressure oil supply way and a first X port control oil way; the control oil way comprises a first overflow valve and a second overflow valve; certain ends of the first overflow valve and the second overflow valve, which are connected with each other in parallel, are connected with a second stop valve, and the other ends of the first overflow valve and the second overflow valve are connected to the main oil tank. The load sensitive test system for the closed hydraulic pump can simulate a load sensitive test on the closed hydraulic pump under the load change situation, can even simulate the performance test of a hydraulic product under the X port control, and has the advantages that the test purposes are extensive, the operation is convenient and the like.

Description

technical field [0001] The invention belongs to the technical field of hydraulic product detection and relates to a closed hydraulic pump load sensitive test system. 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 after the manufacture is completed, that is, to test the pressure, temperature, and flow values ​​of the closed hydraulic pump under load changes. 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 requirements. Contents of ...

Claims

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Application Information

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