Comprehensive test bench with proportional and servo hydraulic valve group

Abstract

The utility model discloses a comprehensive test bench with proportion and servo hydraulic valve groups, which comprises a test bench main body, a console, an oil tank, a pipeline and corresponding hydraulic accessories, a main motor pump group, an oil return filter, a high-pressure filter and an auxiliary motor pump group are arranged below the platform, a vertical surface support is provided with a pressure transmitter and a pressure gauge, and the vertical surface support is provided with a pressure sensor. The main motor pump set and the auxiliary motor pump set are composed of servo motors and variable-speed pumps, one-way valves are installed at outlets of the main pump and the auxiliary pump, high-pressure filters are installed at the outlets of the main pump and the auxiliary pump, and a control valve set is arranged in the vertical face support. The main motor pump set adopts a servo motor and variable speed pump structure and has excellent energy-saving and pressure flow accurate control capability, and a control system is provided with a motion controller which can control a proportional valve and a servo valve; various loops of backpressure loading, auxiliary power oil supply and the like are provided, and a multifunctional non-standard valve group can be tested; the system has a loading pressure maintaining function and can be used for testing a hydraulic valve group with a pressure maintaining capability.

Description

Technical Field

[0001] The utility model relates to the technical field of valve testing equipment, in particular to a comprehensive test bench with a proportional and servo hydraulic valve group. Background Art

[0002] Existing valve test benches usually do not use servo motors as system power sources, do not have multiple circuits such as back pressure loading and auxiliary power oil supply, and do not have loading and pressure maintaining functions.

[0003] The motor pump group does not have excellent pressure and flow precision control capabilities, has a single circuit, and cannot test multifunctional non-standard valve groups or hydraulic valve groups with pressure-maintaining capabilities.

[0004] Therefore, we propose a comprehensive test bench with proportional and servo hydraulic valve groups to solve the problems raised above. Utility Model Content

[0005] The utility model aims to provide a comprehensive test bench with proportional and servo hydraulic valve groups to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a comprehensive test bench with proportional and servo hydraulic valve groups, comprising: a test bench body, a control console, an oil tank, pipelines and corresponding hydraulic accessories, wherein the test bench body is provided with a platform for placing the tested valve group and a vertical support for setting the control console;

[0007] A main motor pump group, an oil return filter, a high-pressure filter and an auxiliary motor pump group are arranged under the platform;

[0008] The vertical support is provided with a pressure transmitter and a pressure gauge;

[0009] The main motor pump group and the auxiliary motor pump group are composed of a servo motor and a variable speed pump;

[0010] The outlets of the main and auxiliary pumps are both provided with one-way valves, and the outlets of the main and auxiliary pumps are provided with high-pressure filters;

[0011] A control valve group is arranged in the vertical support.

[0012] Preferably, the control console is mainly composed of a PLC controller, a display screen, operation buttons and electrical circuits.

[0013] Preferably, the oil tank is equipped with a visual liquid level and liquid temperature gauge, and the oil tank panel is equipped with an air filter.

[0014] Preferably, the control valve group includes an electromagnetic overflow valve, a two-position two-way electromagnetic reversing valve, a high-pressure ball valve, a pressure sensor, a pressure gauge, and a hydraulic valve block. The electromagnetic overflow valve sets the maximum system pressure, the electromagnetic reversing valve is used to control the switching of the auxiliary motor pump group test oil circuit, and the high-pressure ball valve controls the on-off of the return oil pipeline of the main and auxiliary pump groups.

[0015] Preferably, the control valve group is also equipped with a plurality of pressure sensors and pressure gauges.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The main motor pump group adopts the structure of servo motor plus variable speed pump, which has excellent energy saving and precise pressure and flow control capabilities;

[0018] 2. The control system is equipped with a motion controller that can control the proportional valve and servo valve;

[0019] 3. It has multiple circuits such as back pressure loading and auxiliary power oil supply, and can test multifunctional non-standard valve groups;

[0020] 4. The system has the function of loading and maintaining pressure, and can test the hydraulic valve group with pressure maintaining capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a rear view of the utility model;

[0023] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0024] Figure 4 This is a circuit control diagram of the utility model.

[0025] In the figure: 1. Solenoid reversing valve; 2. Solenoid overflow valve; 4. Main motor pump group; 5. Return oil filter; 6. High-pressure filter; 7. Auxiliary motor pump group; 10. Test bench body. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-4, the utility model provides a technical solution: a comprehensive test bench with proportional and servo hydraulic valve groups, including: a test bench body 10, a control console, an oil tank, pipelines and corresponding hydraulic accessories;

[0028] The test bench body 10 is provided with a platform for placing the valve group to be tested and a vertical support for setting the control console;

[0029] A main motor pump group 4, an oil return filter 5, a high-pressure filter 6 and an auxiliary motor pump group 7 are arranged below the platform;

[0030] The vertical support is provided with a pressure transmitter and a pressure gauge;

[0031] The control console is mainly composed of PLC controller, display screen, operation buttons and electrical circuits;

[0032] The console serves as an operation and information interaction platform for testers, converting various operations performed by testers into actions of various components of the test bench controlled by the PLC controller. These actions include: start / stop of the main pump, start / stop of the auxiliary pump, overflow pressure adjustment of the overflow valve, reversing of the reversing valve, etc.

[0033] The oil tank is equipped with a visual liquid level and temperature gauge, which can conveniently observe the amount and temperature of the medium in the oil tank;

[0034] The oil tank panel is equipped with an air filter to prevent external pollutants from entering the oil tank, ensure the cleanliness of the medium, and protect the normal operation of the system to the greatest extent;

[0035] The main motor pump group 4 and the auxiliary motor pump group 7 are composed of a servo motor and a variable speed pump. The pump draws oil from the oil tank under the drive of the motor to provide pressure energy for the system. The servo motor and the variable speed pump have good energy-saving effects and precise pressure and flow control capabilities;

[0036] A one-way valve is installed at the outlet of the main and auxiliary pumps to prevent the backflow impact of the hydraulic oil, and a high-pressure filter 6 is installed at the pump outlet to ensure the cleanliness of the working medium;

[0037] A control valve group is provided in the vertical support, and the control valve group includes an electromagnetic overflow valve 2, a two-position two-way electromagnetic reversing valve 1, a high-pressure ball valve, a pressure sensor, a pressure gauge, and a hydraulic valve block;

[0038] Solenoid relief valve 2 sets the maximum system pressure to prevent the test system from overloading;

[0039] The electromagnetic reversing valve 1 is used to control the switching of the auxiliary motor pump group 7 test oil circuit;

[0040] The high-pressure ball valve controls the on-off of the return oil pipeline of the main and auxiliary pump groups;

[0041] The control valve group is also equipped with multiple pressure sensors and pressure gauges to facilitate obtaining the pressure of each oil circuit of the control valve group and the tested valve group at any time.

[0042] Working principle: When using the main motor pump group 4 for testing, the oil circuit is: oil tank, main pump, high-pressure filter, one-way valve, tested valve group, and the return oil circuit is: tested valve group, cooler, return oil filter 5, oil tank. During the test, the pressure value of each pipeline is displayed in real time on the pressure transmitter screen;

[0043] The oil circuit when using the auxiliary motor pump group 7 for testing is: oil tank, auxiliary pump, high-pressure filter 6, one-way valve, electromagnetic reversing valve 1 left position, tested valve group, and the return oil circuit is: tested valve group, cooler, return oil filter 5, oil tank. During the test, the pressure value of each pipeline is displayed in real time on the pressure transmitter screen;

[0044] The main motor pump group 4 adopts the structure of servo motor plus variable speed pump, which has excellent energy saving and precise pressure and flow control capabilities;

[0045] The control system is equipped with a motion controller that can control proportional valves and servo valves;

[0046] It has multiple circuits such as back pressure loading and auxiliary power oil supply, and can test multifunctional non-standard valve groups;

[0047] The system has a loading and pressure-maintaining function, and can test hydraulic valve groups with pressure-maintaining capabilities.

[0048] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive test bench with proportional and servo hydraulic valve groups, comprising: A test bench body (10), a control console, an oil tank, pipelines and corresponding hydraulic accessories, wherein the test bench body (10) is provided with a platform for placing the valve group to be tested and a vertical support for setting the control console; The invention is characterized in that: a main motor pump group (4), an oil return filter (5), a high-pressure filter (6) and an auxiliary motor pump group (7) are arranged under the platform; The vertical support is provided with a pressure transmitter and a pressure gauge; The main motor pump group (4) and the auxiliary motor pump group (7) are composed of a servo motor and a variable speed pump; The outlets of the main motor pump group (4) and the auxiliary motor pump group (7) are both provided with check valves, and the outlets of the main motor pump group (4) and the auxiliary motor pump group (7) are provided with high-pressure filters (6); A control valve group is arranged in the vertical support.

2. A comprehensive test bench with proportional and servo hydraulic valve groups according to claim 1, characterized in that: The control console is mainly composed of a PLC controller, a display screen, operation buttons and electrical circuits.

3. A comprehensive test bench with proportional and servo hydraulic valve groups according to claim 1, characterized in that: The oil tank is equipped with a visual liquid level and liquid temperature gauge, and the oil tank panel is equipped with an air filter.

4. A comprehensive test bench with proportional and servo hydraulic valve groups according to claim 1, characterized in that: The control valve group comprises an electromagnetic overflow valve (2), a two-position two-way electromagnetic reversing valve (1), a high-pressure ball valve, a pressure sensor, a pressure gauge, and a hydraulic valve block. The electromagnetic overflow valve (2) sets the maximum pressure of the system. The electromagnetic reversing valve (1) is used to control the switching of the test oil circuit of the auxiliary motor pump group (7). The high-pressure ball valve controls the on-off of the return oil pipelines of the main and auxiliary pump groups.

5. A comprehensive test bench with proportional and servo hydraulic valve groups according to claim 4, characterized in that: The control valve group is also equipped with a plurality of pressure sensors and pressure gauges.

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