A hydraulic motor control valve group

Abstract

The utility model relates to the field of hydraulic transmission and control technology, and in particular to a hydraulic motor control valve group. The utility model includes a shuttle valve, and a valve body installed at one end of the shuttle valve, a plurality of ED plugs G1 / 8 are installed on the outside of the valve body, a pressure reducing valve is connected to the top of the valve body, a directional valve is connected to the top of the valve body and near the pressure reducing valve, a brake circuit is arranged on the inside of the valve body, the brake circuit is connected to an oil replenishing circuit, the inner cavity of the brake circuit includes an oil inlet P for receiving pressure oil, the oil inlet P is arranged at one end of the valve body, an oil inlet P1 is arranged at the end of the valve body away from the oil inlet P, and the oil replenishing circuit includes an oil return port T connected to the oil tank. The utility model makes it easy for the device to control the liquid in the hydraulic motor through the structural design of the brake circuit and the oil replenishing circuit, the structure is streamlined, and the components of the control valve group are effectively reduced, thereby reducing the cost of preparing the motor control valve and improving the flexibility of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic transmission and control, in particular to a hydraulic motor control valve group. Background Art

[0002] Hydraulic motor control valve groups play a vital role in hydraulic systems. They are used to regulate and control the operation of hydraulic motors. Hydraulic motor control valve groups usually consist of multiple control valves that work together to achieve precise control of hydraulic motors. These control valves may include one-way valves, reversing valves, speed regulating valves, etc. Each valve has its specific function and purpose. Hydraulic motor control valve groups are an indispensable part of hydraulic systems. They achieve precise control of hydraulic motors by regulating and controlling the flow direction, flow rate and pressure of hydraulic oil.

[0003] During the use of the current existing technology, the hydraulic motor control valve has many components and is complex to operate, resulting in high costs for manufacturing the hydraulic motor control valve. There is room for improvement, so we propose a hydraulic motor control valve group. Utility Model Content

[0004] The utility model aims to provide a hydraulic motor control valve group to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A hydraulic motor control valve group includes a shuttle valve and a valve body installed at one end of the shuttle valve, a plurality of ED plugs G1 / 8 are installed on the outside of the valve body, a pressure reducing valve is connected to the top of the valve body, a directional valve is connected to the top of the valve body and close to the pressure reducing valve, a brake circuit is arranged on the inside of the valve body, and the brake circuit is connected to an oil replenishing circuit.

[0007] Preferably, the inner cavity of the brake circuit comprises an oil inlet P for receiving pressure oil, the oil inlet P is arranged at one end of the valve body, and an end of the valve body away from the oil inlet P is provided with an oil inlet P1.

[0008] Preferably, the oil replenishment circuit includes an oil return port T connected to the oil tank, and the oil return port T is arranged on one side of the valve body. The side of the valve body away from the oil inlet P is provided with an oil return port T1.

[0009] Preferably, a reversing oil port A and a reversing oil port A1 are provided on one side of the valve body and near the oil inlet P1, and a reversing oil port B1 is provided on the other side of the valve body and near the oil inlet P.

[0010] Preferably, the pressure regulating range of the pressure reducing valve is 0.5-10.5 MPa.

[0011] Preferably, the pressure regulating range of the directional valve is 0.17-1.4 MPa.

[0012] Preferably, the set pressure of the pressure reducing valve is 3 MPa.

[0013] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0014] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0015] The utility model makes it easy to control the liquid in the hydraulic motor through the structural design of the brake circuit and the oil replenishment circuit. The structure is streamlined and the components of the control valve group are effectively reduced, thereby reducing the cost of preparing the motor control valve and improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the shuttle valve and the valve body of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the valve body and the oil inlet P1 of the utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the valve body and the oil inlet P of the utility model;

[0021] Figure 5 It is a schematic diagram of the hydraulic principle of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] In the figure: 1. Shuttle valve; 2. ED plug G / 8; 3. Valve body; 4. Pressure reducing valve; 5. Directional valve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] Example 1

[0026] Reference Figure 1-5 A hydraulic motor control valve group includes a shuttle valve 1 and a valve body 3 installed at one end of the shuttle valve 1. A plurality of ED plugs G1 / 82 are installed on the outside of the valve body 3. A pressure reducing valve 4 is connected to the top of the valve body 3. A directional valve 5 is connected to the top of the valve body 3 and close to the pressure reducing valve 4. A brake circuit is arranged on the inside of the valve body 3. The brake circuit is connected to an oil replenishing circuit. By integrating multiple functional components (shuttle valve 1, pressure reducing valve 4, and directional valve 5) on a valve body 3, precise control and efficient operation of the hydraulic motor are achieved. The stability and reliability of the hydraulic motor during operation are ensured by setting the brake circuit and the oil replenishing circuit.

[0027] The inner cavity of the brake circuit includes an oil inlet P for receiving pressure oil, which is arranged at one end of the valve body 3, and an oil inlet P1 is arranged at the end of the valve body 3 away from the oil inlet P. The arrangement of the oil inlets P and P1 enables the brake circuit to receive pressure oil from different positions, thereby increasing the flexibility and adaptability of the system. At the same time, this design also facilitates the maintenance and overhaul of the system.

[0028] The oil replenishing circuit includes an oil return port T connected to the oil tank. The oil return port T is arranged on one side of the valve body 3. The side of the valve body 3 away from the oil inlet P is provided with an oil return port T1. The setting of the oil return port T and T1 enables the oil replenishing circuit to effectively recover the used hydraulic oil and return it to the oil tank, thereby realizing the recycling of oil, reducing oil waste, and reducing the operating cost of the system.

[0029] A reversing oil port A and a reversing oil port A1 are provided on one side of the valve body 3 and near the oil inlet P1, and a reversing oil port B1 is provided on the other side of the valve body 3 and near the oil inlet P. Through the setting of the reversing oil ports A, A1 and B1, the rotation direction of the hydraulic motor can be easily switched, thereby improving the operational convenience and flexibility of the system.

[0030] The pressure regulating range of the directional valve 5 is 0.17-1.4 MPa. The pressure regulating range of the directional valve 5 is set relatively accurately, which can meet the demand for pressure regulation under different working conditions and ensure the stability and reliability of the system.

[0031] Example 2

[0032] Embodiment 1 is further optimized, specifically, as Figure 1As shown, the pressure regulating range of the pressure reducing valve 4 is 0.5-10.5 MPa. The pressure regulating range of the pressure reducing valve 4 is expanded, so that the system can adapt to a wider range of working conditions and improve the adaptability and flexibility of the system.

[0033] The set pressure of the pressure reducing valve 4 is 3 MPa. By setting the pressure of the pressure reducing valve 4 to 3 MPa, it can be ensured that the hydraulic motor obtains a stable pressure supply under normal working conditions, while avoiding system problems caused by excessively high or low pressure.

[0034] From the above, we can know that:

[0035] The utility model aims at the technical problem that during the use of the existing technology, the hydraulic motor control valve has many components and is complicated to operate, resulting in high cost of manufacturing the hydraulic motor control valve, and there is room for improvement; the technical solutions of the above embodiments are adopted. At the same time, the implementation process of the above technical solutions is:

[0036] When the oil inlet P1 is connected to the motor for forward rotation, the oil inlet P is connected to the motor for reverse rotation, and the reversing oil port A is connected to the motor's brake, when the motor is rotating forward (oil inlet P1), the oil passes through the shuttle valve 1 to the pressure reducing valve 4 (the pressure reducing valve adjusts the pressure to 4MPa), and then controls the directional valve to the reversing oil port A to release the motor brake, thereby realizing the motor's forward rotation. The same applies to the motor's reverse rotation.

[0037] Through the above configuration, the present application can certainly solve the above technical problems and achieve the following technical effects:

[0038] The utility model makes it easy to control the liquid in the hydraulic motor through the structural design of the brake circuit and the oil replenishment circuit. The structure is streamlined and the components of the control valve group are effectively reduced, thereby reducing the cost of preparing the motor control valve and improving the flexibility of the device.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A hydraulic motor control valve group, characterized in that: The invention comprises a shuttle valve (1) and a valve body (3) installed at one end of the shuttle valve (1); a plurality of ED plugs G1 / 8 (2) are installed on the outer side of the valve body (3); a pressure reducing valve (4) is connected to the top of the valve body (3); a directional valve (5) is connected to the top of the valve body (3) and close to the pressure reducing valve (4); a brake circuit is arranged on the inner side of the valve body (3); and the brake circuit is connected to an oil replenishing circuit.

2. A hydraulic motor control valve group according to claim 1, characterized in that: The inner cavity of the brake circuit comprises an oil inlet P for receiving pressure oil, the oil inlet P being arranged at one end of the valve body (3), and an oil inlet P1 being arranged at the end of the valve body (3) away from the oil inlet P.

3. A hydraulic motor control valve group according to claim 2, characterized in that: The oil replenishment circuit comprises an oil return port T connected to the oil tank, the oil return port T is arranged on one side of the valve body (3), and an oil return port T1 is arranged on the side of the valve body (3) away from the oil inlet P.

4. A hydraulic motor control valve group according to claim 2, characterized in that: A reversing oil port A and a reversing oil port A1 are provided on one side of the valve body (3) and close to the oil inlet P1, and a reversing oil port B1 is provided on the other side of the valve body (3) and close to the oil inlet P.

5. The hydraulic motor control valve assembly according to claim 1, characterized in that: The pressure regulating range of the pressure reducing valve (4) is 0.5-10.5 MPa.

6. A hydraulic motor control valve assembly according to claim 1, characterized in that: The pressure regulating range of the directional valve (5) is 0.17-1.4 MPa.

7. A hydraulic motor control valve assembly according to claim 5, characterized in that: The set pressure of the pressure reducing valve (4) is 3 MPa.

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