Combinable modular multi-way proportional valve amplifier and electro-hydraulic proportional hydraulic system

Abstract

The embodiment of the utility model discloses a combinable modular multi-way proportional valve amplifier and an electro-hydraulic proportional hydraulic system, and the combinable modular multi-way proportional valve amplifier comprises an expansion unit which comprises a plurality of expansion modules which are connected in series and are used for respectively driving and controlling each joint of a proportional multi-way valve; and the basic module is connected in series with the expansion units so as to transmit electric energy and bus signals to each expansion module. Each drive and control structure, namely each expansion module, does not need to be independently provided with a power supply structure part, a parameter configuration module and the like, and power supply, parameter configuration and the like are uniformly performed through the basic module, so that the cost of the multi-way valve amplifier is reduced, the mounting space of the multi-way valve amplifier is reduced, and the wiring harness is greatly simplified; and the comprehensive reliability of the electric control system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electro-hydraulic control, in particular to a combinable modular multi-way proportional valve amplifier and an electro-hydraulic proportional hydraulic system. Background Art

[0002] The hydraulic transmission system is a type of mechanical transmission system. This type of system is widely used in industrial and agricultural production, especially in presses, injection molding machines, construction machinery and agricultural machinery. In recent years, with the increasing demand for automation in industrial and agricultural production, electro-hydraulic proportional technology has been used more and more in hydraulic systems. The electro-hydraulic proportional system is a type of hydraulic system. It can receive low-power electrical signals, and through electrical and mechanical amplification, it ultimately controls the continuous adjustment of the actuator cylinder or motor. Compared with the switch hydraulic system, the electro-hydraulic proportional hydraulic system is easier to achieve automation, unmanned operation and refinement.

[0003] The electro-hydraulic proportional multi-way valve is a key component for controlling the hydraulic oil flow of the hydraulic system. It can adjust the output pressure and flow, and the multi-way valve can allow a pump source to supply oil to multiple actuators at the same time. The electro-hydraulic proportional multi-way valve refers to the valve core position controlled by the electromagnet to achieve the purpose of regulating the hydraulic oil flow. It can be divided into two-position, three-position and four-position. According to different control methods, it can also be divided into electrical control and hydraulic control. The advantage of the electro-hydraulic proportional multi-way valve is that it can be remotely controlled by the electromagnet to achieve automatic control. It has the characteristics of high reliability, strong applicability, and fast response speed. Therefore, it is widely used in hydraulics, pneumatics, industry, construction, water conservancy, and agriculture.

[0004] The proportional valve amplifier is an electronic controller used to control the electro-hydraulic proportional directional valve. It connects the weak current signal with the proportional hydraulic system, and plays the role of controlling the proportional directional valve and then controlling the electro-hydraulic proportional system. The traditional electro-hydraulic proportional multi-way valve is usually driven by multiple single-channel proportional valve amplifiers. Therefore, the number of single-channel amplifiers required by the proportional multi-way valve is usually equal to the number of multi-way valves. Usually, multiple single-channel amplifiers are installed side by side and powered separately. That is, each independent single-channel amplifier requires a separate power input, power protection unit, command input and other modules, and needs to provide a communication interface for testing parameters (combined with the host computer for parameter configuration) or a human-machine interface (such as buttons, digital tubes). It can be seen that the number of amplifiers is the same as the number of proportional multi-way valves. For example, a four-way proportional multi-way valve needs to use four independent proportional amplifiers. Each proportional amplifier also needs independent power supply, independent internal power supply protection, and independent parameter setting module, which makes the overall cost of the amplifier high, the installation space large, the wiring harness complex, the wiring harness cost high, and the reliability poor. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a modular multi-way proportional valve amplifier.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The combinable modular multi-way proportional valve amplifier is characterized by comprising:

[0008] An expansion unit, comprising a plurality of expansion modules connected in series and used to drive and control each of the proportional multi-way valves respectively;

[0009] The basic module is connected in series with the expansion unit to transmit electric energy and bus signals to each of the expansion modules.

[0010] In the utility model, a plurality of expansion modules can be provided, which are respectively used to drive and control each connection of the proportional multi-way valve. As the power supply and bus signal required by the expansion unit can be provided uniformly by the basic module because the basic module is connected in series with the expansion unit and each expansion module in the expansion unit is connected in series, the basic module can provide unified power supply and bus signal transmission, so that the expansion module does not need to be separately provided with an independent power supply module and a signal instruction input module.

[0011] The specific form of driving and controlling the proportional multi-way valve is the existing conventional technology, that is, the driving control method of the existing single-channel amplifier, so it will not be described in detail here.

[0012] Preferably, the number of the expansion modules is the same as the number of the proportional multi-way valves. In the present invention, a corresponding number of expansion modules can be provided according to the number of the proportional multi-way valves, and each expansion module can drive and control one of the proportional multi-way valves.

[0013] There are multiple ways to connect the expansion modules in series in the utility model. Preferably, the expansion modules are provided with a series plug structure, and adjacent expansion modules are connected in series through the series plug structure. The utility model is connected in series through the series plug structure, which is convenient for assembly and disassembly.

[0014] There are various structural forms of the serial plug-in structure in the utility model, and various existing structural forms can be adopted. Preferably, the serial plug-in structure is composed of a pin row arranged on one side of the expansion module and a female row arranged on the other side. The pin row on one side of the expansion module is connected to the female row of the expansion module adjacent to the side, and the female row on the other side is connected to the pin row of the expansion module adjacent to the side.

[0015] In the utility model, the pin headers and the female headers on both sides of the expansion module are respectively connected to the adjacent expansion modules on both sides, and the expansion modules are sequentially spliced ​​and connected in series, which is not only convenient for disassembly and assembly, but also can reduce the installation space.

[0016] Preferably, the basic module is connected in series with the first expansion module in the expansion unit.

[0017] When the basic module in the utility model is connected to the expansion unit, the mother row and the pin row can also be used to connect with the expansion module arranged in the first position, so that the basic module and each expansion module are spliced ​​in series, which greatly reduces the installation space.

[0018] In order to facilitate disassembly and assembly, preferably, a positioning rail is further included, and both the basic module and the expansion module are provided with a sliding part that matches the positioning rail.

[0019] In the utility model, the basic module and each expansion module can also be positioned on the positioning track, and the expansion module can be positioned and installed according to the number of expansion modules actually required. When the expansion module needs to be reduced, the expansion module can be slid out along the positioning track. When the expansion module needs to be added, the sliding part of the added expansion module is matched with the positioning track, slid to the adjacent expansion module, and connected in series with it.

[0020] In order to prevent the modules on both sides from being removed, preferably, locking structures are provided at both ends of the positioning track. In the utility model, the modules at both ends can be locked by the locking mechanism, and the locking structure can also have various structural forms, and can adopt various existing structural forms, such as locking by clips.

[0021] Preferably, the basic module comprises a drive module for driving and controlling a proportional multi-way valve.

[0022] In the present invention, a driving module, such as a CAN module, can also be arranged on the basic module, so that one of the links of the proportional multi-way valve can also be driven directly through the basic module. That is, the basic module can also work independently.

[0023] Preferably, the basic module includes a parameter configuration module and a human-computer interaction module.

[0024] In the utility model, a parameter configuration module can be set on the basic module to configure the parameters of each extension module, and a human-computer interaction module can also be set to perform human-computer interaction operations. For example, human-computer interaction structures such as buttons and interactive interfaces can be set on the basic module.

[0025] The utility model also provides an electro-hydraulic proportional hydraulic system, comprising a proportional multi-way valve and a combinable modular multi-way proportional valve amplifier as described above, which drives and controls the proportional multi-way valve.

[0026] The beneficial effects of the utility model compared with the prior art are:

[0027] In the utility model, each driving and control structure, that is, each expansion module does not need to be separately provided with a power supply structure part and a parameter configuration module, and power supply and parameter configuration are uniformly performed through a basic module, thereby reducing the cost of the multi-way valve amplifier, reducing its installation space, greatly simplifying the wiring harness, and improving the comprehensive reliability of the electronic control system.

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 Schematic diagram of the structure of the combinable modular multi-way proportional valve amplifier in this embodiment.

[0031] Figure 2 Schematic diagram of the topological structure of the combinable modular multi-way proportional valve amplifier in this embodiment. DETAILED DESCRIPTION

[0032] 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 part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0033] like Figure 1 and Figure 2 As shown, this embodiment is a combinable modular multi-way proportional valve amplifier, comprising:

[0034] The expansion unit comprises a plurality of expansion modules 1 connected in series and used to drive and control each of the proportional multi-way valves respectively;

[0035] The basic module 2 is connected in series with the expansion unit to transmit electric energy and bus signals to each of the expansion modules 1 .

[0036] In the present embodiment, a plurality of expansion modules 1 may be provided, each for driving and controlling each connection of the proportional multi-way valve. As the power supply and bus signal required by the expansion unit are connected in series with the basic module 2 and each expansion module 1 in the expansion unit is connected in series, the basic module 2 may provide unified power supply and bus signal transmission, so that the expansion module 1 does not need to be separately provided with an independent power supply module and a signal command input module, etc.

[0037] The specific form of driving and controlling the proportional multi-way valve is the existing conventional technology, that is, the driving control method of the existing single-channel amplifier, so it will not be described in detail here.

[0038] In one embodiment, the number of the expansion modules 1 is the same as the number of the proportional multi-way valves. In this embodiment, a corresponding number of expansion modules 1 can be set according to the number of proportional multi-way valves, and each expansion module 1 can drive and control one valve.

[0039] In this embodiment, there are multiple ways to connect the expansion modules 1 in series. In one embodiment, a series plug structure is provided on the expansion module 1, and adjacent expansion modules 1 are connected in series through the series plug structure. In this embodiment, the series connection is carried out through the series plug structure, which is convenient for assembly and disassembly.

[0040] In this embodiment, there are various structural forms of the serial plug-in structure, and various existing structural forms can be adopted. In one embodiment, the serial plug-in structure is composed of a pin row arranged on one side of the expansion module 1 and a female row arranged on the other side. The pin row on one side of the expansion module 1 is connected to the female row of the expansion module 1 adjacent to the side, and the female row on the other side is connected to the pin row of the expansion module 1 adjacent to the side.

[0041] In this embodiment, the pin headers and the female headers on both sides of the expansion module 1 are respectively connected to the adjacent expansion modules 1 on both sides. The expansion modules 1 are spliced ​​and connected in series, which is not only convenient for assembly and disassembly, but also can reduce the installation space.

[0042] In one embodiment, the basic module 2 is connected in series with the first expansion module 1 in the expansion unit.

[0043] In this embodiment, when the basic module 2 is connected to the expansion unit, it can also be connected to the expansion module 1 arranged in the first position by means of a female pin row, so that the basic module 2 and each expansion module 1 are spliced ​​in series, greatly reducing the installation space.

[0044] In order to facilitate assembly and disassembly, in one embodiment, a positioning rail 3 is further included, and both the basic module 2 and the expansion module 1 are provided with a sliding portion that matches the positioning rail 3 .

[0045] In this embodiment, the basic module 2 and each expansion module 1 can also be positioned on the positioning track 3. The expansion module 1 can be positioned and installed according to the number of expansion modules 1 actually required. When the expansion module 1 needs to be reduced, the expansion module 1 can be slid out along the positioning track. When the expansion module 1 needs to be added, the sliding part of the added expansion module 1 is matched with the positioning track and slid to the adjacent expansion module 1 to be connected in series.

[0046] In order to prevent the modules on both sides from being moved out, in one embodiment, locking structures are provided at both ends of the positioning track 3. In this embodiment, the modules at both ends can be locked by the locking mechanism, and the locking structure can also have various structural forms, and can adopt various existing structural forms, such as locking by clips.

[0047] In one embodiment, the basic module 2 includes a driving module for driving and controlling a proportional multi-way valve.

[0048] In this embodiment, a driving module, such as a CAN module, may also be provided on the basic module 2, so that one of the proportional multi-way valves may also be driven directly through the basic module 2. That is, the basic module may also work independently.

[0049] In one embodiment, the basic module 2 includes a parameter configuration module and a human-computer interaction module.

[0050] In this embodiment, a parameter configuration module can be set on the basic module 2 to configure the parameters of each expansion module 1, and a human-computer interaction module can also be set to perform human-computer interaction operations. For example, buttons, interactive interfaces and other human-computer interaction structures can be set on the basic module 2.

[0051] In summary, in this embodiment, each drive and control structure, that is, each expansion module does not need to be separately provided with a power supply structure part and a parameter configuration module, and power supply and parameter configuration are uniformly performed through the basic module, thereby reducing the cost of the multi-way valve amplifier, reducing its installation space, greatly simplifying the wiring harness, and improving the comprehensive reliability of the electronic control system.

[0052] Therefore, the above-mentioned combinable modular multi-way proportional valve amplifier is applied to an electro-hydraulic proportional hydraulic system to obtain an electro-hydraulic proportional hydraulic system, which includes a proportional multi-way valve, and a combinable modular multi-way proportional valve amplifier that drives and controls the proportional multi-way valve. The structural form and number of connections of the proportional multi-way valve can be various, and can be specifically set according to actual needs.

[0053] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. Combinable modular multi-way proportional valve amplifier, characterized in that: include: An expansion unit, comprising a plurality of expansion modules connected in series and used to drive and control each of the proportional multi-way valves respectively; The basic module is connected in series with the expansion unit to transmit electric energy and bus signals to each of the expansion modules.

2. The combinable modular multi-way proportional valve amplifier according to claim 1, characterized in that: The number of the expansion modules is the same as the number of the proportional multi-way valves.

3. The combinable modular multi-way proportional valve amplifier according to claim 1, characterized in that: The expansion module is provided with a serial plug-in structure, and adjacent expansion modules are connected in series through the serial plug-in structure.

4. The combinable modular multi-way proportional valve amplifier according to claim 3 is characterized in that: The serial plug-in structure is composed of a pin header arranged on one side of the expansion module and a female header arranged on the other side. The pin header on one side of the expansion module is connected to the female header of the expansion module adjacent to the side, and the female header on the other side is connected to the pin header of the expansion module adjacent to the side.

5. The combinable modular multi-way proportional valve amplifier according to claim 4, characterized in that: The basic module is connected in series with the first expansion module in the expansion unit.

6. The combinable modular multi-way proportional valve amplifier according to claim 5, characterized in that: It also includes a positioning track, and both the basic module and the expansion module are provided with a sliding part that matches the positioning track.

7. The combinable modular multi-way proportional valve amplifier according to claim 6, characterized in that: Both ends of the positioning track are provided with locking structures.

8. The combinable modular multi-way proportional valve amplifier according to any one of claims 1 to 7, characterized in that: The basic module comprises a driving module group for driving and controlling a proportional multi-way valve.

9. The combinable modular multi-way proportional valve amplifier according to claim 8, characterized in that: The basic module includes a parameter configuration module and a human-computer interaction module.

10. An electro-hydraulic proportional hydraulic system, characterized in that: The invention comprises a proportional multi-way valve and a combinable modular multi-way proportional valve amplifier which drives and controls the proportional multi-way valve and is as claimed in any one of claims 1 to 9.

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