CN102878137A - Valve block assembly of hydraulic system of comprehensive experiment platform - Google Patents

Abstract

The invention discloses a valve block assembly of a hydraulic system of a comprehensive experiment platform. The valve block assembly is used for achieving integrated mounting of hydraulic valves of the hydraulic system. The hydraulic system comprise a main oil supply way and a hydraulic control loop connected with the main oil supply way through an overall pressure oil way. The main supply oil way comprises a main pump oil supply way and an oil filling pump oil supply way. The hydraulic control loop comprises a mobile workbench lifting hydraulic loop, a Z-direction hydraulic cylinder control loop, an X-direction hydraulic cylinder control loop and a Y-direction hydraulic cylinder control loop. The valve block assembly comprises a support and a valve block mounted on the support. A duct is reserved in the valve block on the basis of the hydraulic system of the comprehensive experiment platform. The overall pressure oil way, a master oil return way and a master oil discharge way are arranged in the valve block. By arranging the duct in the valve block on the basis of the hydraulic system of the comprehensive experiment platform, integrated mounting of hydraulic valves of the hydraulic system is achieved, pipeline connection is reduced, and operational stability of the hydraulic system is improved.

Description

The valve block assembly of the hydraulic system of the comprehensive experimental platform

technical field

The invention relates to a valve block assembly of a hydraulic system of a comprehensive experiment platform. The comprehensive experiment platform is mainly used in tunnels, mines and underground projects, and belongs to the technical field of hydraulic transmission and control.

Background technique

With the rapid development of my country's economy, the scale of urban construction continues to expand, and the contradiction between urban development and the shortage of land resources has become more and more prominent. In recent years, my country has paid more and more attention to the utilization of urban underground space and given strong support in policies. The comprehensive experimental research platform that can study the stability of different support structures under the effect of excavation is an important technical platform for the research of key technologies in underground engineering. Under this demand, a comprehensive experimental platform for tunnels, mines and underground engineering came into being. The experimental platform uses hydraulic pressure as power. In order to reduce the installation space of the hydraulic system and facilitate later maintenance and maintenance, it is necessary to provide an integrated installation method for the hydraulic valves used in the hydraulic system.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a valve block assembly of the hydraulic system of the comprehensive experimental platform, which realizes the integrated installation of the hydraulic valves of the hydraulic system of the comprehensive experimental platform, thereby reducing pipeline connections and improving the working stability of the hydraulic system .

For realizing above technical purpose, the present invention will take following technical scheme:

A valve block assembly of a comprehensive experimental platform hydraulic system, used to realize the integrated installation of hydraulic valves in the comprehensive experimental platform hydraulic system. The hydraulic control circuit connected by the oil circuit, the main oil supply circuit includes the main pump oil supply circuit and the charge pump oil supply circuit, the hydraulic control circuit includes the mobile workbench lifting hydraulic circuit for controlling the loading box of the experimental platform for lifting movement, The Z-direction hydraulic cylinder control circuit for Z-direction loading on the top surface of the loading box of the control experimental platform, the X-direction hydraulic cylinder control circuit for controlling the loading box of the experimental platform for X-direction horizontal loading, and the control circuit for controlling the loading of the experimental platform The box is used as the Y-direction hydraulic cylinder control circuit for Y-direction horizontal loading; the mobile workbench lifting hydraulic circuit includes four parallel lifting hydraulic cylinders, a pressure reducing valve, a throttle valve, and a two-position three-way electromagnetic ball valve; Z-direction The hydraulic cylinder control circuit includes four Z-direction vertical loading hydraulic cylinders and a three-position four-way electromagnetic reversing valve; the X-direction hydraulic cylinder control circuit and the Y-direction hydraulic cylinder control circuit include three-layer horizontal hydraulic cylinders with the same structure. Cylinder control circuit, each layer of horizontal hydraulic cylinder control circuit includes four horizontal loading hydraulic cylinders arranged in parallel, a three-position four-way electromagnetic reversing valve and a pressure reducing valve; the valve block assembly includes a bracket and is installed on the bracket The valve block; the inside of the valve block is provided with holes based on the hydraulic system of the comprehensive experimental platform, and the inside of the valve block is respectively provided with a total pressure oil circuit, a total oil return circuit, and a total oil discharge circuit; the left side of the valve block A pressure reducing valve, a 6-way welded pipe joint and a hexagon socket plug are installed respectively, and a three-position four-way electromagnetic reversing valve, a throttle valve and six pressure reducing valves are respectively installed on the top surface of the valve block. Valve, five 6-diameter welded pipe joints, an electromagnetic overflow valve, a large flow check valve and three hexagon socket plugs are installed on the front of the valve block, and a pressure gauge is installed on the right side of the valve block switch, a small flow check valve, a 20-diameter welded pipe joint, a hexagon socket plug and an 8-diameter welded pipe joint, and a 6-diameter welded pipe joint, two Inner hexagonal plugs, sixteen 10-diameter welded pipe joints, and two inner hexagonal plugs and a 20-diameter welded pipe joint are respectively installed on the bottom surface of the valve block; outside the pressure reducing valve on the left side of the valve block A two-position three-way electromagnetic ball valve is installed in a superimposed manner, and a three-position four-way electromagnetic reversing valve is installed in a superimposed manner on the outside of each pressure reducing valve on the top surface of the valve block; among the components on the right side of the valve block: The pressure gauge switch is equipped with a pressure gauge for measuring the total pressure of the oil circuit, a 20-diameter welded pipe joint connected to the oil outlet of the main pump, and an 8-diameter welded pipe joint connected to the oil outlet of the charge pump; located on the front of the valve block Among the five 6-way welded pipe joints, one of them is connected to the pressure measuring port of the six-point pressure gauge switch used to measure the total pressure oil circuit pressure, and the remaining four are connected to the oil drain port of the six-point pressure gauge switch ; The 6-way welded pipe joint on the left side of the valve block is connected to the oil drain port of the six-point pressure gauge switch, while the 6-way welded pipe joint on the back of the valve block The joint is connected to the pressure measuring port of the six-point pressure gauge switch used to measure the lifting hydraulic circuit of the mobile workbench; among the sixteen 10-diameter welded pipe joints on the back: one of the 10-diameter welded pipe joints is connected to the lifting The oil port connection of the hydraulic cylinder, two of the 10 diameter welded pipe joints are respectively connected with the rodless chamber oil port and the rod chamber oil port of the vertical loading hydraulic cylinder in the Z direction, and six of the 10 diameter welded pipe joints are respectively It is connected with the rodless chamber oil port and the rod chamber oil port of each horizontal loading hydraulic cylinder of the X-direction hydraulic cylinder control circuit, and the remaining six 10-diameter welded pipe joints are respectively connected with each horizontal loading hydraulic cylinder control circuit of the Y-direction hydraulic cylinder. The oil port of the rodless chamber of the hydraulic cylinder is connected with the oil port of the rod chamber; the 20 diameter welded pipe joint located on the bottom surface of the valve block is respectively connected with the total oil return circuit and the total oil drain circuit inside the valve block, and the 20 diameter The welded pipe joint is connected with the return oil filter through the pipe.

The small flow one-way valve, large flow one-way valve, electromagnetic overflow valve, two-position three-way electromagnetic ball valve, throttle valve and each three-position four-way electromagnetic valve are all plate valves; each pressure reducing valve is a stack valve .

According to the above technical scheme, the following beneficial effects can be achieved:

1. The present invention is based on the hydraulic system of the comprehensive experimental platform, and a hole is opened inside the valve block, so that the valve block can realize the integrated installation of the hydraulic valves of the hydraulic system of the comprehensive experimental platform, thereby reducing pipeline connections and improving the working efficiency of the hydraulic system. stability;

2. The valve block assembly of the present invention is equipped with a pressure gauge to measure the pressure of the main oil circuit inside the valve block, which is convenient for testing the valve block assembly device when leaving the factory, and can also be compared with the pressure measured by the external six-point pressure gauge switch. Compare the pressure value of the main oil circuit to improve the accuracy of the data;

3. Each hydraulic valve described in the present invention is either a plate valve or a stacked valve, which greatly saves the installation space of the hydraulic system;

4. The welded pipe joints on the rear side of the valve block assembly of the present invention are arranged according to certain rules, and the control valves on the top surface of the valve block and the corresponding welded pipe joints at the outlet of the oil passage are on the same vertical section, so when When the corresponding function of the device fails, the cause of the failure can be quickly located, which is convenient for later maintenance and maintenance.

Description of drawings

Fig. 1 is the hydraulic principle diagram that the present invention is based on;

Fig. 2 is a three-dimensional diagram of the present invention;

Fig. 3 is the back view of the present invention;

Among them: 1 is a valve block; 2.1~2.7 is a 6-diameter welded pipe joint; 3 is a two-position three-way electromagnetic ball valve; 4.1~4.7 is a superimposed pressure reducing valve; 5 is a throttle valve; Four-way electromagnetic reversing valve; 7 is pressure gauge; 8 is pressure gauge switch; 9.1~9.2 is 20 diameter welded pipe joint; 10 is small flow check valve; 11.1~11.9 is hexagon socket plug; 12 is 8 13.1~13.2 are brackets; 14 is a large flow check valve; 15 is an electromagnetic overflow valve; 16.1~16.15 are 10 diameter welded pipe joints.

Detailed ways

The accompanying drawings disclose, without limitation, the structural schematic diagrams of the preferred embodiments involved in the present invention; the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

The present invention will be described in detail below in conjunction with the accompanying drawings.

The valve block assembly of the hydraulic system of the comprehensive experimental platform according to the present invention is used to realize the integrated installation of each hydraulic valve of the hydraulic system of the comprehensive experimental platform. The hydraulic system of the comprehensive experimental platform, with reference to Fig. 1, includes the main oil supply circuit and The hydraulic control circuit connected with the main oil supply circuit through the total pressure oil circuit; the main oil supply circuit includes the oil supply circuit of the main pump and the oil supply circuit of the charge pump, and the oil supply circuit of the main pump includes the main pump connected with the oil outlet of the main pump The flow check valve, the oil supply circuit of the charge pump includes a charge pump and a small flow check valve connected to the oil outlet of the charge pump. The charge pump is a quantitative plunger pump driven by a three-phase asynchronous motor; the hydraulic control circuit includes a The lifting hydraulic circuit of the mobile workbench that controls the loading box of the experimental platform for lifting movement, the Z-direction hydraulic cylinder control circuit for controlling the upper surface of the loading box of the experimental platform for Z-direction loading, and the control circuit for controlling the loading box of the experimental platform for X-direction The X-direction hydraulic cylinder control circuit for horizontal loading in the direction and the Y-direction hydraulic cylinder control circuit for Y-direction horizontal loading of the loading box used to control the experimental platform; where:

The lifting hydraulic circuit of the mobile workbench includes four lifting hydraulic cylinders arranged in parallel, a pressure reducing valve, a throttle valve, and a two-position three-way electromagnetic ball valve; the P port of the pressure reducing valve is connected to the total pressure oil circuit, and the A port is connected to the second The P port and T port of the one-position three-way electromagnetic ball valve are connected to the main drain circuit, the A port of the two-position three-way electromagnetic ball valve is connected to the oil ports of the four lifting hydraulic cylinders, and the T port is connected to the main oil return circuit through the throttle valve.

The Z-direction hydraulic cylinder control circuit includes four Z-direction vertical loading hydraulic cylinders arranged in parallel, and a three-position four-way electromagnetic reversing valve; the P port of the three-position four-way electromagnetic reversing valve is connected to the total pressure oil circuit, and the A port is branched It is four-way, respectively connected to the A port of the hydraulic control check valve, and its B-port branch is four-way respectively connected to the rod chamber oil port of each vertical loading hydraulic cylinder, and its T port is connected to the main oil return pipe.

Both the X-direction hydraulic cylinder control circuit and the Y-direction hydraulic cylinder control circuit include three layers of horizontal hydraulic cylinder control circuits with the same structure. Electromagnetic reversing valve and a pressure reducing valve; the P port of the pressure reducing valve is connected to the total pressure oil circuit, the A port is connected to the P port of the three-position four-way electromagnetic reversing valve, the T port is connected to the main drain circuit, and the three-position four-way solenoid Port P of the reversing valve is connected to port A of the pressure reducing valve, and its A port is divided into four branches, which are respectively connected to the A port of the hydraulic control check valve, and its B port is divided into four branches respectively connected to the rod chamber of the horizontal loading hydraulic cylinder Oil port, its T port is connected to the main oil return pipe.

Referring to Figure 2, the valve block assembly includes a valve block 1 and brackets 13.1~13.2 for supporting the valve block 1, and the valve block is installed on the oil tank of the hydraulic station through the brackets 13.1~13.2; the interior of the valve block 1 is as described above The hydraulic system of the comprehensive experimental platform needs to have holes, and the integrated installation of each hydraulic valve is completed: 6-diameter welded pipe joint 2.6, pressure reducing valve 4.1 are installed on the left side of valve block 1, throttle valve 5, three The four-position electromagnetic directional valve 6.1 and the pressure reducing valve 4.2~4.7 are installed on the top surface of the valve block, the two-position three-way electromagnetic ball valve 3 is installed on the superimposed pressure reducing valve 4.1 in a superimposed manner, and the three-position four-way electromagnetic directional valve 6.2~6.7 are installed on the pressure reducing valve 4.2~4.7 sequentially in a superimposed manner, pressure gauge switch 8, 20 diameter welded pipe joint 9.1, small flow check valve 10, inner hexagon plug 11.1 and 8 diameter welded pipe joint The joint 12 is installed on the right side of the valve block 1, the pressure gauge 7 is installed on the pressure gauge switch 8, the 6-diameter welded pipe joint 2.1~2.5, the electromagnetic overflow valve 15, the large flow check valve 14 and the inner hexagon screw Plugs 11.2~11.4 are installed on the front side of valve block 1, 20-diameter welded pipe joint 9.1 is connected to the oil outlet of the main pump, 8-diameter welded pipe joint 12 is connected to the oil outlet of the charge pump, and 6-diameter welded pipe joint 2.5 is connected to the pressure measuring port of the six-point pressure gauge switch to test the pressure of the main oil circuit, 6-diameter welded pipe joints 2.1~2.4 and 6-diameter welded pipe joint 2.6 are connected to the oil drain port of the six-point pressure gauge switch. The pressure gauge 7 measures the pressure of the main oil circuit in the valve block 1, which can be compared with the pressure of the main oil circuit measured by the external six-point pressure gauge switch through the test port where the 6-diameter welded pipe joint 2.5 is located, and helps To test the valve block device.

Referring to Figure 3, the hexagon socket plug 11.5 is installed on the side of the valve block 1, the 6-diameter welded pipe joint 2.7, the internal hexagon plug 11.8~11.9 and the 10-diameter welded pipe joint 16.1~16.15 are installed behind the valve block 1 On the side, hexagon socket plugs 11.6~11.7, 20 diameter welded pipe joints 9.2 and brackets 13.1~13.2 are installed on the lower surface of valve block 1, and the valve block assembly is installed on the oil tank of the hydraulic station through brackets 13.1~13.2. 6-diameter welded pipe joint 2.7 is connected to the pressure measuring port of the six-point pressure gauge switch to test the pressure of the lifting circuit of the mobile workbench, 10-diameter welded pipe joint 16.1 is connected to the oil port of the lifting hydraulic cylinder, and 10-diameter welded pipe joint 16.2~ 16.3 is connected to the rodless chamber and the rod chamber oil port of the vertical Z-direction loading hydraulic cylinder, and the 10 diameter welded pipe joint 16.4~16.9 is connected to the rodless chamber and the rod chamber of the first, second and third loading hydraulic cylinders in the horizontal X direction. Rod chamber oil port, 10 diameter welded pipe joint 16.10~16.15 connected to the rodless chamber and rod chamber oil port of the first, second and third loading hydraulic cylinders in the horizontal Y direction, 20 diameter welded pipe joint 9.2 and the valve The internal total oil return circuit of block 1 communicates with the oil drain circuit, and is connected to the oil filter through an external pipeline.

Working principle of the present invention is:

The valve block assembly is installed on the fuel tank of the hydraulic station through brackets 13.1~13.2. The outlet of the main oil pump is connected to the 20-diameter welded pipe joint 9.1 through the pipeline, and the outlet of the charge pump is connected to the 8-diameter welded pipe joint through the pipeline. 12, 6 diameter welded pipe joints 2.1~2.7 are connected to the corresponding pressure measuring port and oil drain port of the six-point pressure gauge switch through the pipeline, and 10 diameter welded pipe joints 16.1~16.15 are connected to the oil of the hydraulic cylinder through the pipeline. The port is connected, and the 20 diameter welded pipe joint 9.2 is connected to the oil filter through the external pipeline. When the main oil pump or charge pump is working, the hydraulic system is provided with pressure oil. There is a hole inside the valve block 1 to make the pressure oil flow according to the route designed in the hydraulic schematic diagram 1. A hydraulic valve is installed outside to realize the pressure oil. Actions such as decompression, reversing, throttling, etc., finally output externally and internally recover hydraulic oil through the connection of each welded pipe joint with other components of the hydraulic system. The invention makes the structure of the hydraulic system compact, facilitates assembly and debugging in the factory, reduces installation workload, and facilitates later maintenance work.

Claims (2)

1. the valve block assembly of a synthesis experiment platform hydraulic system, be used for realizing the integrated installation of each hydrovalve of synthesis experiment platform hydraulic system, it is characterized in that: the hydraulic system of this synthesis experiment platform comprises main supply oil circuit and the hydraulic control circuit that is connected with the main supply oil circuit by the total pressure oil circuit, the main supply oil circuit comprises that main pump supplies oil circuit for oil circuit and slippage pump, and this hydraulic control circuit comprises the shuttle table lifting oil hydraulic circuit of doing elevating movement for the loading case of control experiment porch, do the Z-direction oil hydraulic cylinder control loop that Z-direction loads for end face on the loading case of control experiment porch, the loading case that is used for the control experiment porch is done the X-direction oil hydraulic cylinder control loop that the directions X level loads and the loading case that is used for the control experiment porch is done the Y-direction oil hydraulic cylinder control loop that the Y-direction level loads; Shuttle table lifting oil hydraulic circuit comprises four parallel lifting hydraulic cylinder, a reduction valve, a throttle valve, two-position three-way electromagnetic ball valves that arrange; Z-direction oil hydraulic cylinder control loop comprises four the parallel vertical loading hydraulic cylinder of Z-direction, 3-position 4-way solenoid directional control valves that arrange; X-direction oil hydraulic cylinder control loop, Y-direction oil hydraulic cylinder control loop include the identical horizontal hydraulic cylinder control loop of three-decker, and every layer of horizontal hydraulic cylinder control loop includes four parallel horizontal loading hydraulic cylinder, a 3-position 4-way solenoid directional control valve and reduction valve that arrange; The valve piece that described valve block assembly comprises support and is installed on support; Described valve piece inside offers the duct take the hydraulic system of synthesis experiment platform as the basis, and valve piece inside is respectively arranged with total pressure oil circuit, total oil circuit, total draining road; The left surface of valve piece is separately installed with a reduction valve, 6 latus rectum Welded fittings and a hexagonal socket head plug, the end face of valve piece is separately installed with a 3-position 4-way solenoid directional control valve, a throttle valve and six reduction valve, the front of valve piece is separately installed with five 6 latus rectum Welded fittings, an electromagnetic relief valve, a large flow check valve and three hexagonal socket head plugs, the right flank of valve piece is installed respectively a pressure meter switch, a small flow one-way valve, 20 latus rectum Welded fittings, a hexagonal socket head plug and 8 latus rectum Welded fittings, 6 latus rectum Welded fittings are installed respectively at the back side of valve piece, two hexagonal socket head plugs, 16 10 latus rectum Welded fittings, two hexagonal socket head plugs are then installed respectively in the bottom surface of valve piece, 20 latus rectum Welded fittings; A two-position three-way electromagnetic ball valve is installed with stacked system in the reduction valve outside that is in valve piece left side, and a 3-position 4-way solenoid directional control valve is all installed with stacked system in each reduction valve outside that is in valve piece end face; Be in each parts on valve piece right side: pressure meter switch dispose for pressure gauge, the 20 latus rectum Welded fittings of measuring the total pressure oil circuit be connected with the main pump oil outlet, 8 latus rectum Welded fittings are connected with the slippage pump oil outlet; Be arranged in five 6 latus rectum Welded fittings in valve piece front, one of them is connected with the pressure tap of the six point pressure table switches that are used for measurement total pressure oil circuit pressure, and remaining four then are connected with the drain tap of six point pressure table switches; The 6 latus rectum Welded fittings that are positioned at valve piece left side are connected with the drain tap of six point pressure table switches, and the 6 latus rectum Welded fittings that are positioned at the valve piece back side then are connected with the pressure tap of the six point pressure table switches that are used for measurement shuttle table lifting oil hydraulic circuit; Be arranged in 16 10 latus rectum Welded fittings at the back side: one of them 10 latus rectum Welded fitting is connected with the lifting hydraulic cylinder hydraulic fluid port, wherein two 10 latus rectum Welded fittings are connected with the rod chamber hydraulic fluid port with the rodless cavity hydraulic fluid port of the vertical loading hydraulic cylinder of Z-direction respectively, wherein six 10 latus rectum Welded fittings are connected with the rod chamber hydraulic fluid port with the rodless cavity hydraulic fluid port of each horizontal loading hydraulic cylinder in X-direction oil hydraulic cylinder control loop respectively, and six remaining 10 latus rectum Welded fittings are connected with the rod chamber hydraulic fluid port with the rodless cavity hydraulic fluid port that the Y-direction oil hydraulic cylinder is controlled each horizontal loading hydraulic cylinder in loop respectively; The 20 latus rectum Welded fittings that are positioned at valve piece bottom surface are communicated with total oil circuit and total draining road of valve piece inside respectively, and this 20 latus rectum Welded fitting is connected with return oil filter by pipeline.

2. the valve block assembly of described synthesis experiment platform hydraulic system according to claim 1, it is characterized in that: described small flow one-way valve, large flow check valve, electromagnetic relief valve, two-position three-way electromagnetic ball valve, throttle valve and each three position four-way electromagnetic valve are plate valve; Each reduction valve is all Sandwich plate valve.

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