CN216666106U

CN216666106U - Multi-module hydraulic substation

Info

Publication number: CN216666106U
Application number: CN202123332133.3U
Authority: CN
Inventors: 王新宇; 王澍; 邱春来; 张洋; 邸泉玮; 杨斌
Original assignee: Sinotest Equipment Co ltd
Current assignee: Zhongji Simeidi Changchun Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-03
Anticipated expiration: 2031-12-28

Abstract

The utility model provides a multi-module hydraulic substation, which comprises a substation main body, a first sub-module, a second sub-module and a substation base, wherein the substation main body, the first sub-module and the second sub-module are respectively arranged on the substation base; the substation main body is used for connecting an external oil source and can be used for a plurality of first submodules and second submodules, the first submodules are used for supplying oil for large-tonnage actuators, the second submodules are used for supplying oil for small-tonnage actuators, the substation main body comprises a main oil inlet pipeline, a main oil return pipeline and a main oil drainage pipeline, the first submodules and the second submodules respectively comprise low-pressure oil ways, high-pressure oil ways, branch oil return pipelines and branch oil drainage pipelines, the first submodules further comprise pilot oil ways, the low-pressure oil ways and the high-pressure oil ways are respectively butted with the main oil inlet pipeline, the branch oil return pipelines are butted with the main oil return pipelines, and the branch oil drainage pipelines are butted with the main oil drainage pipelines. The utility model can carry out the matching and combination of a plurality of groups of modules according to the flow required by each channel and is suitable for a multi-channel hydraulic system.

Description

Multi-module hydraulic substation

Technical Field

The utility model relates to the technical field of hydraulic systems, in particular to a multi-module hydraulic substation.

Background

At present, most hydraulic substations of hydraulic equipment have limited overall functions and only have the function of average oil distribution, and for occasions with different required flow rates, a plurality of hydraulic substations need to be configured or configured according to the maximum required flow rate, so that the cost is increased and unnecessary waste is caused; and the impact in the pressure increasing and reducing process is large, so that certain influence is caused on the stability of a hydraulic system and the service life of each element.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multi-module hydraulic substation which can be matched and combined with multiple modules according to different required flow rates of channels, and each module can realize independent control, remote start and stop and high-low pressure switching.

In order to achieve the purpose, the utility model adopts the following specific technical scheme:

the utility model provides a multi-module hydraulic substation, which comprises: the substation main body, the first submodule and the second submodule are respectively arranged on the substation base; the substation main body comprises a main body valve block, and the main body valve block comprises a main oil inlet pipeline, a main oil return pipeline and a main oil drain pipeline which are respectively communicated with an external oil source; the first branch module comprises a first branch valve block, the first branch valve block comprises a pilot oil way, a first low-pressure oil way, a first high-pressure oil way, a first branch oil return line, a first branch oil drain line and a first two-way cartridge valve, one end of the pilot oil way, one end of the first high-pressure oil way and one end of the first low-pressure oil way are respectively communicated with the main oil outlet line, the other end of the pilot oil way is communicated with the pilot oil way of the servo valve of the large-tonnage actuator, and the other end of the first high-pressure oil way and the other end of the first low-pressure oil way are respectively communicated with an oil cylinder A cavity of the large-tonnage actuator; one end of the first branch oil return pipeline is communicated with a cavity B of an oil cylinder of the large-tonnage actuator, and the other end of the first branch oil return pipeline is communicated with the main oil return pipeline; one end of the first branch oil drainage pipeline is respectively communicated with the cavity A of the oil cylinder and the cavity B of the oil cylinder, and the other end of the first branch oil drainage pipeline is communicated with the main oil drainage pipeline; the first two-way cartridge valve is connected between the first low-pressure oil way and the first high-pressure oil way and used for switching the first low-pressure oil way to be communicated with the cavity A of the oil cylinder or the first high-pressure oil way to be communicated with the cavity A of the oil cylinder; the second branch module comprises a second branch valve block, the second branch valve block comprises a second low-pressure oil way, a second high-pressure oil way, a second branch oil return pipeline, a second branch oil drainage pipeline and a second two-way cartridge valve, one end of the second high-pressure oil way and one end of the second low-pressure oil way are respectively communicated with the main oil outlet pipeline, and the other end of the second high-pressure oil way and the other end of the second low-pressure oil way are respectively communicated with an oil cylinder C cavity of the small-tonnage actuator; one end of a second branch oil return pipeline is communicated with an oil cylinder D cavity of the small-tonnage actuator, and the other end of the second branch oil return pipeline is communicated with the main oil return pipeline; one end of the second branch oil drainage pipeline is communicated with the oil cylinder C cavity and the oil cylinder D cavity respectively, and the other end of the second branch oil drainage pipeline is communicated with the main oil drainage pipeline; the second two-way cartridge valve is connected between the second low-pressure oil way and the second high-pressure oil way and used for switching the communication between the second low-pressure oil way and the cavity C of the oil cylinder or the communication between the second high-pressure oil way and the cavity C of the oil cylinder.

Preferably, the first high-pressure pipeline is provided with a first two-position four-way electromagnetic directional valve, a first one-way valve, a second one-way valve and a first hydraulic control one-way valve; when the first two-position four-way electromagnetic reversing valve is not powered on, the first interface of the first two-position four-way electromagnetic reversing valve is communicated with the fourth interface of the first two-position four-way electromagnetic reversing valve, and the second interface of the first two-position four-way electromagnetic reversing valve is communicated with the third interface of the first two-position four-way electromagnetic reversing valve; when the first two-position four-way electromagnetic reversing valve is powered on, a first interface of the first two-position four-way electromagnetic reversing valve is communicated with a second interface of the first two-position four-way electromagnetic reversing valve, and a third interface of the first two-position four-way electromagnetic reversing valve is communicated with a fourth interface of the first two-position four-way electromagnetic reversing valve; the first interface of the first two-position four-way electromagnetic reversing valve is also communicated with a first branch oil return pipeline, the second interface of the first two-position four-way electromagnetic reversing valve is also communicated with an oil inlet of a first one-way valve, an oil outlet of the first one-way valve is communicated with a third interface of the first two-way cartridge valve, the third interface of the first two-position four-way electromagnetic reversing valve is also communicated with a main oil outlet pipeline, a fourth interface of the first two-position four-way electromagnetic reversing valve is communicated with an oil outlet of a second one-way valve, and an oil inlet of the second one-way valve is communicated with an oil cylinder A cavity of a large-tonnage actuator; the remote control port of the first hydraulic control one-way valve is communicated with the fourth port of the first two-position four-way electromagnetic reversing valve, the oil inlet of the first hydraulic control one-way valve is communicated with the main oil outlet pipeline, the oil outlet of the first hydraulic control one-way valve is communicated with the second port of the first two-way cartridge valve, and the first port of the first two-way cartridge valve is communicated with the oil cylinder A cavity of the large-tonnage actuator.

Preferably, a first soft start energy accumulator, a first pressure gauge and a first pressure switch are further arranged on the first high-pressure pipeline, the first soft start energy accumulator is communicated with an oil outlet of the first one-way valve, and the first pressure gauge and the first pressure switch are respectively communicated with a first interface of the first two-way cartridge valve.

Preferably, a first electromagnetic valve, a first throttle valve, a first overflow valve and a third one-way valve are respectively arranged on the first low-pressure oil way, an oil inlet of the first throttle valve is communicated with the main oil outlet pipeline, an oil outlet of the first throttle valve is connected with one end of the first electromagnetic valve, the other end of the first electromagnetic valve is respectively communicated with an oil inlet of the first overflow valve and an oil inlet of the third one-way valve, an oil outlet of the first overflow valve is communicated with a first branch oil return pipeline, and an oil outlet of the third one-way valve is communicated with an oil cylinder A cavity of the large-tonnage actuator.

Preferably, a second pressure switch located between the first electromagnetic valve and the first overflow valve is further arranged on the first low-pressure oil path.

Preferably, a pilot oil path filter, a second electromagnetic valve, a pressure reducing valve, a second pressure gauge and a third pressure switch are arranged on the pilot oil path, an oil inlet of the pilot oil path filter is communicated with the main oil outlet pipeline, an oil outlet of the pilot oil path filter is communicated with one end of the second electromagnetic valve, the other end of the second electromagnetic valve is communicated with an oil inlet of the pressure reducing valve, and an oil outlet of the pressure reducing valve is respectively communicated with the second pressure gauge, the third pressure switch and a pilot oil path of a servo valve of the large-tonnage actuator.

Preferably, a second two-position four-way electromagnetic directional valve, a fourth one-way valve, a fifth one-way valve and a second hydraulic control one-way valve are arranged on the second high-pressure pipeline; the second two-position four-way electromagnetic reversing valve comprises a first interface, a second interface, a third interface and a fourth interface, when the second two-position four-way electromagnetic reversing valve is not powered on, the first interface of the second two-position four-way electromagnetic reversing valve is communicated with the fourth interface of the second two-position four-way electromagnetic reversing valve, and the second interface of the second two-position four-way electromagnetic reversing valve is communicated with the third interface of the second two-position four-way electromagnetic reversing valve; when the second two-position four-way electromagnetic reversing valve is powered on, a first interface of the second two-position four-way electromagnetic reversing valve is communicated with a second interface of the second two-position four-way electromagnetic reversing valve, and a third interface of the second two-position four-way electromagnetic reversing valve is communicated with a fourth interface of the second two-position four-way electromagnetic reversing valve; the first interface of the second two-position four-way electromagnetic reversing valve is also communicated with a second branch oil return pipeline, the second interface of the second two-position four-way electromagnetic reversing valve is also communicated with an oil inlet of a fourth one-way valve, an oil outlet of the fourth one-way valve is communicated with a third interface of a second two-way cartridge valve, the third interface of the second two-position four-way electromagnetic reversing valve is also communicated with a main oil outlet pipeline, a fourth interface of the second two-position four-way electromagnetic reversing valve is communicated with an oil outlet of a fifth one-way valve, and an oil inlet of the fifth one-way valve is communicated with an oil cylinder A cavity of a small-tonnage actuator; a remote control port of a second hydraulic control one-way valve is communicated with a fourth interface of the first two-position four-way electromagnetic directional valve, an oil inlet of the second hydraulic control one-way valve is communicated with a main oil outlet pipeline, an oil outlet of the second hydraulic control one-way valve is communicated with a second interface of the second two-way cartridge valve, and a first interface of the second two-way cartridge valve is communicated with an oil cylinder A cavity of the small-tonnage actuator; and a second soft start energy accumulator, a third pressure gauge and a fourth pressure switch are further arranged on the second high-pressure pipeline, the second soft start energy accumulator is communicated with an oil outlet of the fourth one-way valve, and the third pressure gauge and the fourth pressure switch are respectively communicated with a first interface of the second two-way cartridge valve.

Preferably, a third electromagnetic valve, a second throttle valve, a second overflow valve, a third pressure switch and a sixth one-way valve are respectively arranged on the second low-pressure oil path, an oil inlet of the second throttle valve is communicated with the main oil outlet pipeline, an oil outlet of the second throttle valve is connected with one end of the third electromagnetic valve, the other end of the third electromagnetic valve is respectively communicated with an oil inlet of the second overflow valve and an oil inlet of the sixth one-way valve, an oil outlet of the second overflow valve is communicated with a second branch oil return pipeline, an oil outlet of the sixth one-way valve is communicated with an oil cylinder A cavity of the small-tonnage actuator, and the third pressure switch is positioned between the third electromagnetic valve and the second overflow valve.

Preferably, a pressure line filter and a pressure line accumulator are arranged on the main oil inlet line.

Preferably, the substation base comprises an oil receiving disc, a valve block connecting plate and supporting legs, the supporting legs and the valve block connecting plate are welded on the bottom surface and the top surface of the oil receiving disc respectively, an oil discharge port is formed in the oil receiving disc, and the main body valve block, the first sub-valve block and the second sub-valve block are fixed on the valve block connecting plate respectively.

Compared with the prior art, the utility model can achieve the following technical effects:

1. and multiple groups of modules are matched and combined according to different demand flows of each channel, so that the method is suitable for occasions with different demand flows, and avoids increasing the cost and causing unnecessary waste.

2. The utility model can realize independent control, remote start and stop and stable high-low pressure switching of the oil cylinder through the electromagnetic valve, and can slowly boost pressure in the switching process so as to reduce system impact caused by pressure switching.

3. The state monitoring is carried out through the pressure switch, and the functions of diagnosing and cutting off a fault oil way are achieved when the hydraulic system leaks or a hose bursts, so that the system safety is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a multi-module hydraulic substation according to one embodiment of the present invention;

FIG. 2 is a schematic block diagram of a substation body according to one embodiment of the utility model;

FIG. 3 is a schematic structural diagram of a first sub-module according to one embodiment of the present invention;

FIG. 4 is a schematic block diagram of a substation base according to one embodiment of the utility model;

fig. 5 is a schematic diagram of an oil circuit structure of a multi-module hydraulic substation according to one embodiment of the present invention.

Wherein the reference numerals include: the substation main body 1, the main body valve block 11, the pressure pipeline filter 12, the pressure pipeline accumulator 13, the return oil pipeline accumulator 14, the first submodule 2, the first valve block 21, the first two-way cartridge valve 221, the first two-position four-way electromagnetic directional valve 222, the first check valve 223, the second check valve 224, the first pilot operated check valve 225, the first soft start accumulator 226, the first pressure gauge 227, the first pressure switch 228, the first electromagnetic valve 231, the first throttle valve 232, the first overflow valve 233, the third check valve 234, the second pressure switch 235, the pilot oil pipeline filter 241, the second electromagnetic valve 242, the pressure reducing valve 243, the second pressure gauge 244, the third pressure switch 245, the seventh check valve 251, the eighth check valve 261, the second submodule 3, the second valve block 31, the second two-position four-way electromagnetic directional valve 321, the fourth check valve 322, the fifth check valve 323, the second pilot oil pipeline check valve 324, the second hydraulic control check valve 324, the second pressure switch 228, the second pressure switch 233, the second relief valve 233, the second check valve 261, the second check valve 234, the second relief valve, The hydraulic control system comprises a second soft start energy accumulator 325, a third pressure gauge 326, a fourth pressure switch 327, a second two-way cartridge valve 328, a third electromagnetic valve 331, a second throttle valve 332, a second overflow valve 333, a fifth pressure switch 334, a sixth check valve 335, a ninth check valve 341, a tenth check valve 351, a substation base 4, an oil receiving pan 41, a valve block connecting plate 42, supporting legs 43 and an oil discharge port 44.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1 to 5, a multi-module hydraulic substation provided in an embodiment of the present invention includes: the substation comprises a substation main body 1, at least one first submodule piece 2, at least one second submodule piece 3 and a substation base 4, wherein the substation main body 1, the first submodule piece 2 and the second submodule piece 3 are respectively installed on the substation base 4, the substation main body 1 is fixedly connected with the first submodule piece 2 and the second submodule piece 3 through screws and sealed through O-shaped sealing rings, the substation main body 1 is connected onto the substation base 4 through the screws, and the substation main body 1 is supported and fixed through the substation base 4.

The substation main body 1 is communicated with an external oil source, the first submodule pieces 3 are respectively communicated with the substation main body 1 and a large-tonnage actuator, the second submodule pieces 3 are respectively communicated with the substation main body 1 and a small-tonnage actuator, oil of the external oil source enters the substation main body 1 and then is divided into N paths (N is the sum of the number of the first submodule pieces 2 and the number of the second submodule pieces 3) and respectively enters the first submodule pieces 2 and the second submodule pieces 3, the first submodule pieces 2 supply oil for the large-tonnage actuator, and the second submodule pieces 3 supply oil for the small-tonnage actuator.

The substation main body 1 comprises a main body valve block 11, the main body valve block 11 comprises a main oil inlet pipeline, a main oil return pipeline and a main oil drainage pipeline, the main oil inlet pipeline is provided with an oil inlet, the main oil return pipeline is provided with an oil return port, the main oil drainage pipeline is provided with an oil drainage port, and the oil inlet, the oil return port and the oil drainage port are respectively communicated with an external oil source.

Be provided with pressure pipeline filter 12 and pressure pipeline energy storage ware 13, pressure pipeline filter 12 and pressure pipeline energy storage ware 13 on the main oil pipe way that advances through hydraulic joint connection on main body valve piece 11, pressure pipeline filter 12 is used for filtering the impurity of fluid, and pressure pipeline energy storage ware 13 is used for absorbing the pipeline and strikes, plays the cushioning effect to the fluid after filtering. After entering a main oil inlet pipeline through an oil inlet, oil of an external oil source enters each first submodule 2 and each second submodule 3 after being filtered by a pressure pipeline filter 12 and buffered by a pressure pipeline energy accumulator 13.

An oil return pipeline energy accumulator 14 is arranged on the main oil return pipeline, the oil return pipeline energy accumulator 14 is used for absorbing pipeline impact, oil in the main oil return pipeline is buffered, and the oil returns to an external oil source after being buffered. The return line accumulator 14 is connected to the main body valve block 11 by a hydraulic connection.

The flow rate of the second submodule 2 is larger than the flow rate of the second submodule 3, in one example of the utility model, the flow rate of the second submodule 2 is 630L/min, and the flow rate of the second submodule 3 is 250L/min. The description will be given by taking the second submodule 2 of 630L/min and the second submodule 3 of 250L/min as an example.

The second submodule 2 comprises a first submodule 21, the first submodule 21 comprises a pilot oil path, a first low-pressure oil path, a first high-pressure oil path, a first branch oil return line, a first branch oil drain line and a first two-way cartridge valve 221, one end of the pilot oil path, one end of the first high-pressure oil path and one end of the first low-pressure oil path are respectively communicated with a main oil outlet line, the other end of the pilot oil path is communicated with a pilot oil path of a servo valve of a large-tonnage actuator, and the other end of the first high-pressure oil path and the other end of the first low-pressure oil path are respectively communicated with an oil cylinder A cavity of the large-tonnage actuator; one end of the first branch oil return pipeline is communicated with a cavity B of an oil cylinder of the large-tonnage actuator, and the other end of the first branch oil return pipeline is communicated with the main oil return pipeline; one end of the first branch oil drainage pipeline is respectively communicated with the cavity A of the oil cylinder and the cavity B of the oil cylinder, and the other end of the first branch oil drainage pipeline is communicated with the main oil drainage pipeline; the first two-way cartridge valve 221 is connected between the first low-pressure oil path and the first high-pressure oil path, and is used for switching the communication between the first low-pressure oil path and the cavity A of the oil cylinder or the communication between the first high-pressure oil path and the cavity A of the oil cylinder.

And a seventh check valve 251 is arranged on the first branch oil return pipeline, an eighth check valve 261 is arranged on the first branch oil drain pipeline, the seventh check valve 251 is used for preventing oil in the first branch oil return pipeline from flowing back, and the eighth check valve 261 is used for preventing oil in the first branch oil drain pipeline from flowing back.

The first valve block 21 has only one oil supply port, and the first high-pressure oil path and the first low-pressure oil path share the oil supply port and provide high-pressure oil and low-pressure oil to the large-tonnage actuator through the oil supply port.

A first two-position four-way electromagnetic directional valve 222, a first check valve 223, a second check valve 224 and a first hydraulic control check valve 225 are arranged on the first high-pressure pipeline; when the first two-position four-way electromagnetic directional valve 222 is not powered on, the first interface of the first two-position four-way electromagnetic directional valve 222 is communicated with the fourth interface of the first two-position four-way electromagnetic directional valve 222, and the second interface of the first two-position four-way electromagnetic directional valve 222 is communicated with the third interface of the first two-position four-way electromagnetic directional valve 222; when the first two-position four-way electromagnetic directional valve 222 is powered on, the first interface of the first two-position four-way electromagnetic directional valve 222 is communicated with the second interface of the first two-position four-way electromagnetic directional valve 222, and the third interface of the first two-position four-way electromagnetic directional valve 222 is communicated with the fourth interface of the first two-position four-way electromagnetic directional valve 222.

The first interface of the first two-position four-way electromagnetic reversing valve 222 is also communicated with a first branch oil return pipeline, the second interface of the first two-position four-way electromagnetic reversing valve 222 is also communicated with an oil inlet of a first one-way valve 223, an oil outlet of the first one-way valve 223 is communicated with the third interface of the first two-way cartridge valve 221, the third interface of the first two-position four-way electromagnetic reversing valve 222 is also communicated with a main oil outlet pipeline, the fourth interface of the first two-position four-way electromagnetic reversing valve 222 is communicated with an oil outlet of a second one-way valve 224, and an oil inlet of the second one-way valve 224 is communicated with an oil cylinder A cavity of the large-tonnage actuator. Orifices are connected in parallel to both ends of the first check valve 223.

The remote control port of the first hydraulic control one-way valve 225 is communicated with the fourth interface of the first two-position four-way electromagnetic directional valve 222, the oil inlet of the first hydraulic control one-way valve 225 is communicated with the main oil outlet pipeline, the oil outlet of the first hydraulic control one-way valve 225 is communicated with the second interface of the first two-way cartridge valve 221, and the first interface of the first two-way cartridge valve 221 is communicated with the oil cylinder A cavity of the large-tonnage actuator.

The first high-pressure pipeline is further provided with a first soft start energy accumulator 226, a first pressure gauge 227 and a first pressure switch 228, the first soft start energy accumulator 226 is communicated with an oil outlet of the first one-way valve 223, and the high pressure of the first soft start energy accumulator 226 plays a role in slowly boosting. The first pressure gauge 227 and the first pressure switch 228 are respectively communicated with the first interface of the first two-way cartridge 221. The first pressure gauge 227 is used for displaying the oil pressure at the oil supply port of the first branch valve block 21, and when the oil pressure is reduced due to the oil leakage condition of the first high-pressure pipeline, the first pressure switch 228 sends a control signal to the controller, and the controller controls the first two-position four-way electromagnetic directional valve 222 to be powered off.

When oil enters the first high-pressure oil path and the first two-position four-way electromagnetic directional valve 222 is not powered, the oil flows to the first soft start accumulator 226 through the third interface and the second interface of the first two-position four-way electromagnetic directional valve 222 and the first check valve 223, and flows to the third interface of the first two-way cartridge valve 221 through a throttling hole in parallel connection with the first check valve 223, pressure oil props against a valve core of the first two-way cartridge valve 221, the second interface of the first two-way cartridge valve 221 is sealed, the first high-pressure oil path is in a normally closed state, and at the moment, the pressure oil at the oil supply port of the first divider block 21 flows into the first branch oil return pipeline of the first divider block 21 through the fourth interface and the first interface of the second two-position four-way electromagnetic directional valve 222 and returns to the main oil return pipeline of the main body valve block.

When the first two-position four-way electromagnetic reversing valve 222 is powered on, oil flows into a remote control port of the first hydraulic control one-way valve 225 through a third port and a fourth port of the first two-position four-way electromagnetic reversing valve 222, the first hydraulic control one-way valve 225 is opened, the oil flows into a second port of the first two-way cartridge valve 221, so that the second port of the first two-way cartridge valve 221 is opened, the oil flows to the first port from the second port of the first two-way cartridge valve 221, and then enters an oil cylinder A cavity of the large-tonnage actuator through an oil supply port of the first divider valve block 21, at the moment, the oil supply port of the first divider valve block 21 is in a high-pressure state, and the pressure is consistent with the pressure of an oil source; the pressure oil in the cavity A of the oil cylinder pushes the piston rod to move towards the cavity B of the oil cylinder, and the pressure oil in the cavity B of the oil cylinder returns to the first branch oil return pipeline through the hose, returns to the main oil return pipeline of the main body valve block through the seventh one-way valve 251 and finally returns to an external oil source.

When the first two-position four-way electromagnetic directional valve 222 is powered on, oil at the third interface of the first two-position four-way cartridge valve 221 and oil of the first soft start energy accumulator 226 flow to the first two-position four-way electromagnetic directional valve 222 through the throttle hole connected in parallel with the first check valve 223, flow to the first branch oil return pipeline through the second interface and the first interface of the first two-position four-way electromagnetic directional valve 222, return to the main oil return pipeline of the main body valve block through the seventh check valve 251, and finally return to an external oil source.

The first low-pressure oil way is respectively provided with a first electromagnetic valve 231, a first throttle valve 232, a first overflow valve 233 and a third one-way valve 234, an oil inlet of the first throttle valve 232 is communicated with the main oil outlet pipeline, an oil outlet of the first throttle valve 232 is connected with one end of the first electromagnetic valve 231, the other end of the first electromagnetic valve 231 is respectively communicated with an oil inlet of the first overflow valve 233 and an oil inlet of the third one-way valve 234, an oil outlet of the first overflow valve 233 is communicated with a first branch oil return pipeline, and an oil outlet of the third one-way valve 234 is communicated with an oil cylinder A cavity of the large-tonnage actuator.

When the first electromagnetic valve 231 is powered on, the first low-pressure oil way is opened, oil entering the first low-pressure oil way flows to the first electromagnetic valve 231 after being limited by the first throttle valve 232, the oil is divided into two ways, one way flows to the oil supply port of the first branch valve block 21 through the third check valve 234 and flows to the oil cylinder A cavity of the large-tonnage actuator, at the moment, the oil supply port of the first branch valve block 21 is in a low-pressure state to provide low-pressure oil for the oil cylinder A cavity, the other way flows to the first branch oil return pipeline after the pressure of the oil cylinder A cavity is adjusted through the first overflow valve 233, returns to the main oil return pipeline of the main body valve block through the seventh check valve 251, and finally returns to an external oil source.

And a second pressure switch 235 positioned between the first electromagnetic valve 231 and the first overflow valve 233 is further arranged on the first low-pressure oil path, and when oil leakage occurs in the first low-pressure oil path, the second pressure switch 235 sends a control signal to the controller, and the controller controls the first electromagnetic valve 231 to be powered off.

The pilot oil path filter 241, the second electromagnetic valve 242, the reducing valve 243, the second pressure gauge 244 and the third pressure switch 245 are arranged on the pilot oil path, the oil inlet of the pilot oil path filter 241 is communicated with the main oil outlet pipeline, the oil outlet of the pilot oil path filter 241 is communicated with one end of the second electromagnetic valve 242, the other end of the second electromagnetic valve 242 is communicated with the oil inlet of the reducing valve 243, and the oil outlet of the reducing valve 243 is respectively communicated with the second pressure gauge 244, the third pressure switch 245 and the pilot oil path of the servo valve of the large-tonnage actuator.

When the second electromagnetic valve 242 is powered on, the pilot oil path is opened, the oil entering the pilot oil path flows to the second electromagnetic valve 242 after being filtered by the pilot oil path filter 241, and then enters the pilot oil path of the servo valve of the large-tonnage actuator through the pilot oil port of the first sub-valve block 21 and the pilot oil port of the servo valve of the large-tonnage actuator after being adjusted to a proper pressure by the pressure reducing valve 243, so that the servo valve of the large-tonnage actuator reaches a controlled state.

The second pressure gauge 244 is used for displaying the oil pressure at the pilot oil interface, and when the oil pressure drops due to the oil leakage of the pilot oil path, the third pressure switch 245 sends a control signal to the controller, and the controller controls the second solenoid valve 242 to be powered off.

The first two-way cartridge valve 221, the first two-position four-way electromagnetic directional valve 222, the first check valve 223, the second check valve 224, the first hydraulic control check valve 225, the first electromagnetic valve 231, the first throttle valve 232, the first overflow valve 233, the third check valve 234, the pilot oil filter 241, the second electromagnetic valve 242, the pressure reducing valve 243, the seventh check valve 251 and the eighth check valve 261 are connected to the first valve block 21 in a threaded cartridge mode respectively, and the first soft start energy accumulator 226, the first pressure gauge 227, the first pressure switch 228, the second pressure switch 235, the second pressure gauge 244 and the third pressure switch 245 are connected to the first valve block 21 through hydraulic connectors respectively.

The start-up sequence of the first submodule 2 is as follows: the controller firstly supplies 24V direct current to the third electromagnetic valve 331, opens the pilot oil path, increases the pressure of the pilot oil path to make the pressure equal to the pressure of the oil source, controls the servo valve of the large-tonnage actuator, supplies 24V direct current to the second electromagnetic valve 242, opens the first low-pressure oil path, and supplies low-pressure oil to the large-tonnage actuator; finally, the controller supplies 24V direct current to the first two-position four-way electromagnetic reversing valve 222, opens the first high-pressure oil way and supplies high-pressure oil to the large-tonnage actuator; when the first high-pressure oil path is opened, the controller cuts off the 24V direct current of the low second electromagnetic valve 242, and the switching of the high-pressure oil path and the low-pressure oil path is completed in sequence.

As can be seen from the above, the first sub-module 2 is activated in the sequence of the pilot oil passage → the first low-pressure oil passage → the first high-pressure oil passage.

And only when the first low-pressure oil way and the first high-pressure oil way are closed completely, the pilot oil way is closed after the pressure of the oil source is reduced to 0.

The second sub-module 3 comprises a second sub-valve block 31, the second sub-valve block 31 comprises a second low-pressure oil path, a second high-pressure oil path, a second sub-oil return line, a second sub-oil drainage line and a second two-way cartridge valve 328, one end of the second high-pressure oil path and one end of the second low-pressure oil path are respectively communicated with the main oil outlet line, and the other end of the second high-pressure oil path and the other end of the second low-pressure oil path are respectively communicated with an oil cylinder C cavity of the small-tonnage actuator; one end of a second branch oil return pipeline is communicated with an oil cylinder D cavity of the small-tonnage actuator, and the other end of the second branch oil return pipeline is communicated with the main oil return pipeline; one end of the second branch oil drainage pipeline is respectively communicated with the cavity C of the oil cylinder and the cavity D of the oil cylinder, and the other end of the second branch oil drainage pipeline is communicated with the main oil drainage pipeline; the second two-way cartridge valve 328 is connected between the second low-pressure oil path and the second high-pressure oil path, and is configured to switch the communication between the second low-pressure oil path and the cylinder C cavity or the communication between the second high-pressure oil path and the cylinder C cavity.

Be provided with ninth check valve 341 on the second divides back oil pipe way, be provided with tenth check valve 351351 on the second divides draining pipeline, ninth check valve 341 is used for preventing the fluid backward flow in the second divides back oil pipe way, and tenth check valve 351 is used for preventing the fluid backward flow in the second divides draining pipeline.

The second sub-valve block 31 has only one oil supply port, and the second low-pressure oil path and the second high-pressure oil path share the oil supply port, and both provide high-pressure oil and low-pressure oil to the small-tonnage actuator through the oil supply port.

A second two-position four-way electromagnetic directional valve 321, a fourth check valve 322, a fifth check valve 323 and a second hydraulic control check valve 324 are arranged on the second high-pressure pipeline; the second two-position four-way electromagnetic directional valve 321 comprises a first interface, a second interface, a third interface and a fourth interface, when the second two-position four-way electromagnetic directional valve 321 is not powered on, the first interface of the second two-position four-way electromagnetic directional valve 321 is communicated with the fourth interface of the second two-position four-way electromagnetic directional valve 321, and the second interface of the second two-position four-way electromagnetic directional valve 321 is communicated with the third interface of the second two-position four-way electromagnetic directional valve 321; when the second two-position four-way electromagnetic directional valve 321 is powered on, the first port of the second two-position four-way electromagnetic directional valve 321 is communicated with the second port of the second two-position four-way electromagnetic directional valve 321, and the third port of the second two-position four-way electromagnetic directional valve 321 is communicated with the fourth port of the second two-position four-way electromagnetic directional valve 321.

The first interface of the second two-position four-way electromagnetic reversing valve 321 is also communicated with a second branch oil return pipeline, the second interface of the second two-position four-way electromagnetic reversing valve 321 is also communicated with an oil inlet of a fourth one-way valve 322, an oil outlet of the fourth one-way valve 322 is communicated with a third interface of a second two-way cartridge valve 328, the third interface of the second two-position four-way electromagnetic reversing valve 321 is also communicated with a main oil outlet pipeline, a fourth interface of the second two-position four-way electromagnetic reversing valve 321 is communicated with an oil outlet of a fifth one-way valve 323, and an oil inlet of the fifth one-way valve 323 is communicated with an oil cylinder A cavity of the small-tonnage actuator.

A remote control port of the second hydraulic control one-way valve 324 is communicated with a fourth port of the first two-position four-way electromagnetic directional valve 222, an oil inlet of the second hydraulic control one-way valve 324 is communicated with a main oil outlet pipeline, an oil outlet of the second hydraulic control one-way valve 324 is communicated with a second port of the second two-way cartridge valve 328, and a first port of the second two-way cartridge valve 328 is communicated with an oil cylinder A cavity of the small-tonnage actuator; and a second soft start energy accumulator 325, a third pressure gauge 326 and a fourth pressure switch 327 are further arranged on the second high-pressure pipeline, the second soft start energy accumulator 325 is communicated with an oil outlet of the fourth one-way valve 322, and the third pressure gauge 326 and the fourth pressure switch 327 are respectively communicated with a first interface of a second two-way cartridge valve 328. An orifice is connected in parallel to both ends of the fourth check valve 322.

The oil supply principle of the second high-pressure pipeline is the same as that of the first high-pressure pipeline, and therefore, the description is omitted.

A third electromagnetic valve 331, a second throttling valve 332, a second overflow valve 333, a fifth pressure switch 334 and a sixth one-way valve 335 are respectively arranged on the second low-pressure oil path, an oil inlet of the second throttling valve 332 is communicated with the main oil outlet pipeline, an oil outlet of the second throttling valve 332 is connected with one end of the third electromagnetic valve 331, the other end of the third electromagnetic valve 331 is respectively communicated with an oil inlet of the second overflow valve 333 and an oil inlet of the sixth one-way valve 335, an oil outlet of the second overflow valve 333 is communicated with a second branch oil return pipeline, an oil outlet of the sixth one-way valve 335 is communicated with a cavity A of an oil cylinder of a small-tonnage actuator, and the fifth pressure switch 334 is positioned between the third electromagnetic valve 331 and the second overflow valve 333.

The oil supply principle of the second low-pressure pipeline is the same as that of the first low-pressure pipeline, and therefore, the description is omitted.

The starting sequence of the second branch valve block 31 is also that the second low-pressure pipeline is opened first to supply low-pressure oil for the small-tonnage actuator, and then the second high-pressure pipeline is opened to supply high-pressure oil for the small-tonnage actuator. The switching manner of the second valve dividing block 31 from low pressure to high pressure is the same as that of the first valve dividing block 21, and therefore, the description thereof is omitted.

Because the large-tonnage actuator and the small-tonnage actuator both adopt static pressure support technology, oil drainage phenomenon exists at the position of the oil cylinder, oil is discharged to the first branch oil drainage pipeline and the second branch oil drainage pipeline through oil drainage ports of the respective oil cylinders, and then the oil is collected to the main oil drainage pipeline and flows back to an external oil source.

Substation base 4 is including connecing food tray 41, valve block connecting plate 42 and landing leg 43, it is the steel sheet to connect food tray 41, oil drain 44 has been seted up on connecing food tray 41, valve block connecting plate 42 is the shaped steel with landing leg 43, landing leg 43 welding is in the bottom surface that connects food tray 41, will connect food tray 41 to prop up, the fork truck transport of being convenient for, valve block connecting plate 42 welding is at the top surface that connects food tray 41, the main part valve block, first minute valve block 21 and second minute valve block 31 are fixed respectively on valve block connecting plate 42, connect food tray 41 can catch the oil that the dismouting hose leaked out, the rethread oil drain 44 is arranged the place of regulation, prevent that the hydraulic oil from flowing to ground and causing the pollution.

In the description herein, references to the description of "one embodiment," "some embodiments," "an example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A multi-module hydraulic substation, characterized by comprising: the substation comprises a substation main body, at least one first sub-module, at least one second sub-module and a substation base, wherein the substation main body, the first sub-module and the second sub-module are respectively arranged on the substation base;

the substation main body comprises a main body valve block, and the main body valve block comprises a main oil inlet pipeline, a main oil return pipeline and a main oil drain pipeline which are respectively communicated with an external oil source;

the first branch module comprises a first branch valve block, the first branch valve block comprises a pilot oil way, a first low-pressure oil way, a first high-pressure oil way, a first branch oil return line, a first branch oil drain line and a first two-way cartridge valve, one end of the pilot oil way, one end of the first high-pressure oil way and one end of the first low-pressure oil way are respectively communicated with a main oil outlet line, the other end of the pilot oil way is communicated with a pilot oil way of a servo valve of a large-tonnage actuator, and the other end of the first high-pressure oil way and the other end of the first low-pressure oil way are respectively communicated with an oil cylinder A cavity of the large-tonnage actuator; one end of the first branch oil return pipeline is communicated with a cavity B of an oil cylinder of the large-tonnage actuator, and the other end of the first branch oil return pipeline is communicated with the main oil return pipeline; one end of the first branch oil drainage pipeline is communicated with the cavity A of the oil cylinder and the cavity B of the oil cylinder respectively, and the other end of the first branch oil drainage pipeline is communicated with the main oil drainage pipeline; the first two-way cartridge valve is connected between the first low-pressure oil way and the first high-pressure oil way and used for switching the first low-pressure oil way to be communicated with the cavity A of the oil cylinder or the first high-pressure oil way to be communicated with the cavity A of the oil cylinder;

the second branch module comprises a second branch valve block, the second branch valve block comprises a second low-pressure oil path, a second high-pressure oil path, a second branch oil return line, a second branch oil drainage line and a second two-way cartridge valve, one end of the second high-pressure oil path and one end of the second low-pressure oil path are respectively communicated with the main oil outlet line, and the other end of the second high-pressure oil path and the other end of the second low-pressure oil path are respectively communicated with a cavity C of an oil cylinder of a small-tonnage actuator; one end of the second branch oil return pipeline is communicated with an oil cylinder D cavity of the small-tonnage actuator, and the other end of the second branch oil return pipeline is communicated with the main oil return pipeline; one end of the second branch oil drainage pipeline is communicated with the cavity C of the oil cylinder and the cavity D of the oil cylinder respectively, and the other end of the second branch oil drainage pipeline is communicated with the main oil drainage pipeline; the second two-way cartridge valve is connected between the second low-pressure oil way and the second high-pressure oil way and used for switching the communication between the second low-pressure oil way and the cavity C of the oil cylinder or the communication between the second high-pressure oil way and the cavity C of the oil cylinder.

2. The multi-module hydraulic substation of claim 1, wherein a first two-position four-way electromagnetic directional valve, a first check valve, a second check valve and a first hydraulic control check valve are arranged on the first high-pressure oil path; wherein, the first and the second end of the pipe are connected with each other,

the first two-position four-way electromagnetic reversing valve comprises a first interface, a second interface, a third interface and a fourth interface, when the first two-position four-way electromagnetic reversing valve is not powered on, the first interface of the first two-position four-way electromagnetic reversing valve is communicated with the fourth interface of the first two-position four-way electromagnetic reversing valve, and the second interface of the first two-position four-way electromagnetic reversing valve is communicated with the third interface of the first two-position four-way electromagnetic reversing valve; when the first two-position four-way electromagnetic reversing valve is powered on, a first interface of the first two-position four-way electromagnetic reversing valve is communicated with a second interface of the first two-position four-way electromagnetic reversing valve, and a third interface of the first two-position four-way electromagnetic reversing valve is communicated with a fourth interface of the first two-position four-way electromagnetic reversing valve;

the first interface of the first two-position four-way electromagnetic reversing valve is also communicated with the first branch oil return pipeline, the second interface of the first two-position four-way electromagnetic reversing valve is also communicated with the oil inlet of the first one-way valve, the oil outlet of the first one-way valve is communicated with the third interface of the first two-way cartridge valve, the third interface of the first two-position four-way electromagnetic reversing valve is also communicated with the main oil outlet pipeline, the fourth interface of the first two-position four-way electromagnetic reversing valve is communicated with the oil outlet of the second one-way valve, and the oil inlet of the second one-way valve is communicated with the oil cylinder A cavity of the large-tonnage actuator;

the remote control port of the first hydraulic control one-way valve is communicated with the fourth interface of the first two-position four-way electromagnetic directional valve, the oil inlet of the first hydraulic control one-way valve is communicated with the main oil outlet pipeline, the oil outlet of the first hydraulic control one-way valve is communicated with the second interface of the first two-way cartridge valve, and the first interface of the first two-way cartridge valve is communicated with the oil cylinder A cavity of the large-tonnage actuator.

3. The multi-module hydraulic substation of claim 2, wherein a first soft start accumulator, a first pressure gauge and a first pressure switch are further arranged on the first high-pressure oil path, the first soft start accumulator is communicated with an oil outlet of the first one-way valve, and the first pressure gauge and the first pressure switch are respectively communicated with a first interface of the first two-way cartridge valve.

4. The multi-module hydraulic substation of claim 1, wherein the first low-pressure oil path is provided with a first solenoid valve, a first throttle valve, a first overflow valve and a third check valve, respectively, an oil inlet of the first throttle valve is communicated with the main oil outlet pipeline, an oil outlet of the first throttle valve is connected with one end of the first solenoid valve, the other end of the first solenoid valve is communicated with an oil inlet of the first overflow valve and an oil inlet of the third check valve, respectively, an oil outlet of the first overflow valve is communicated with the first branch oil return pipeline, and an oil outlet of the third check valve is communicated with the oil cylinder a cavity of the large-tonnage actuator.

5. The multi-module hydraulic substation of claim 4, further provided with a second pressure switch on the first low pressure oil circuit between the first solenoid valve and the first overflow valve.

6. The multi-module hydraulic substation of claim 1, wherein a pilot oil path filter, a second electromagnetic valve, a pressure reducing valve, a second pressure gauge and a third pressure switch are arranged on the pilot oil path, an oil inlet of the pilot oil path filter is communicated with the main oil outlet pipeline, an oil outlet of the pilot oil path filter is communicated with one end of the second electromagnetic valve, the other end of the second electromagnetic valve is communicated with an oil inlet of the pressure reducing valve, and an oil outlet of the pressure reducing valve is respectively communicated with the second pressure gauge, the third pressure switch and a pilot oil path of a servo valve of the large-tonnage actuator.

7. The multi-module hydraulic substation of claim 2, wherein a second two-position four-way electromagnetic directional valve, a fourth check valve, a fifth check valve and a second hydraulic control check valve are arranged on the second high-pressure oil path; wherein the content of the first and second substances,

the second two-position four-way electromagnetic reversing valve comprises a first interface, a second interface, a third interface and a fourth interface, when the second two-position four-way electromagnetic reversing valve is not powered on, the first interface of the second two-position four-way electromagnetic reversing valve is communicated with the fourth interface of the second two-position four-way electromagnetic reversing valve, and the second interface of the second two-position four-way electromagnetic reversing valve is communicated with the third interface of the second two-position four-way electromagnetic reversing valve; when the second two-position four-way electromagnetic reversing valve is powered on, a first interface of the second two-position four-way electromagnetic reversing valve is communicated with a second interface of the second two-position four-way electromagnetic reversing valve, and a third interface of the second two-position four-way electromagnetic reversing valve is communicated with a fourth interface of the second two-position four-way electromagnetic reversing valve;

the first interface of the second two-position four-way electromagnetic reversing valve is also communicated with the second branch oil return pipeline, the second interface of the second two-position four-way electromagnetic reversing valve is also communicated with the oil inlet of the fourth one-way valve, the oil outlet of the fourth one-way valve is communicated with the third interface of the second two-way cartridge valve, the third interface of the second two-position four-way electromagnetic reversing valve is also communicated with the main oil outlet pipeline, the fourth interface of the second two-position four-way electromagnetic reversing valve is communicated with the oil outlet of the fifth one-way valve, and the oil inlet of the fifth one-way valve is communicated with the oil cylinder A cavity of the small-tonnage actuator;

a remote control port of the second hydraulic control one-way valve is communicated with a fourth interface of the first two-position four-way electromagnetic directional valve, an oil inlet of the second hydraulic control one-way valve is communicated with the main oil outlet pipeline, an oil outlet of the second hydraulic control one-way valve is communicated with a second interface of the second two-way cartridge valve, and a first interface of the second two-way cartridge valve is communicated with an oil cylinder A cavity of the small-tonnage actuator;

and the second high-pressure oil path is also provided with a second soft start energy accumulator, a third pressure gauge and a fourth pressure switch, the second soft start energy accumulator is communicated with an oil outlet of the fourth one-way valve, and the third pressure gauge and the fourth pressure switch are respectively communicated with a first interface of the second two-way cartridge valve.

8. The multi-module hydraulic substation of claim 1, wherein a third solenoid valve, a second throttle valve, a second overflow valve, a third pressure switch and a sixth check valve are respectively disposed on the second low-pressure oil path, an oil inlet of the second throttle valve is communicated with the main oil outlet line, an oil outlet of the second throttle valve is connected with one end of the third solenoid valve, another end of the third solenoid valve is respectively communicated with an oil inlet of the second overflow valve and an oil inlet of the sixth check valve, an oil outlet of the second overflow valve is communicated with the second branch oil return line, an oil outlet of the sixth check valve is communicated with a cylinder a cavity of the small-tonnage actuator, and the third pressure switch is located between the third solenoid valve and the second overflow valve.

9. The multi-module hydraulic substation of claim 1, wherein a pressure line filter and a pressure line accumulator are provided on the main oil intake line.

10. The multi-module hydraulic substation of claim 1, wherein the substation base comprises an oil receiving pan, a valve block connecting plate and support legs, the support legs and the valve block connecting plate are welded to the bottom surface and the top surface of the oil receiving pan respectively, an oil outlet is formed in the oil receiving pan, and the main body valve block, the first branch valve block and the second branch valve block are fixed to the valve block connecting plate respectively.