Electro-hydraulic push rod control valve group

Abstract

The utility model relates to an electric-hydraulic push rod control valve bank which comprises an assembled integrated body and a control valve unit installed in the assembled integrated body. The assembly type integrated body comprises a main valve block, an auxiliary valve block, an adapter plate and a fixing screw penetrating and connecting the main valve block, the auxiliary valve block and the adapter plate. The main valve block, the auxiliary valve block and the adapter plate form a three-stage assembly structure; one side of the auxiliary valve block abuts against the adapter plate, the main valve block abuts against the other side of the auxiliary valve block, and the adapter plate, the auxiliary valve block and the main valve block are sequentially connected together in a penetrating mode through fixing screws from the outer side of the adapter plate. The control valve group adopts international standard valves and is convenient to maintain; the service life is long, frequent actions are allowed, the control precision is high, and the requirements of modern production can be met; and the size is small.

Description

Technical Field

[0001] The utility model relates to an electro-hydraulic push rod control valve group, which is suitable for the integration of various international standard control valve components. Background Art

[0002] The existing electro-hydraulic push rod control valve group is integrated with the hydraulic pump, and various control valve parts are embedded in the integrated block in a homemade way. Although the cost is low, the processing precision is low and the surface is rough. This leads to frequent failures during use, short life, poor control precision, and is only suitable for occasions with infrequent actions and low precision requirements. Utility Model Content

[0003] In order to solve the defects and shortcomings of the above-mentioned existing structural methods, the purpose of the utility model is to adopt a new structural form, combined with international standard control valve components to provide an electro-hydraulic push rod control valve group to meet the needs of modern production.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an electro-hydraulic push rod control valve group, including: an assembled integrated body and a control valve unit installed in the assembled integrated body; the assembled integrated body includes: a main valve block, an auxiliary valve block, an adapter plate and fixing screws connecting the three; the main valve block, the auxiliary valve block and the adapter plate constitute a three-level assembly structure; one side of the auxiliary valve block is close to the adapter plate, and the main valve block is close to the other side of the auxiliary valve block, and the adapter plate, the auxiliary valve block and the main valve block are connected together in sequence through the fixing screws from the outside of the adapter plate;

[0005] Furthermore, the control valve unit comprises: a hydraulically controlled one-way valve spirally arranged at both ends of the auxiliary valve block, a threaded one-way valve spirally arranged at both ends of the main valve block, and a cartridge relief valve and a cartridge one-way valve inserted above the main valve block;

[0006] The various control valve components of the control valve component unit are international standard valve components, and the control valve group of this solution is used for the integration of the control valve component unit.

[0007] Furthermore, the cartridge relief valve and the cartridge check valve are arranged in pairs and the positions of the two cartridge relief valves and the two cartridge check valves correspond one to one;

[0008] Furthermore, flanges are arranged at the positions of the threaded one-way valves at both ends of the main valve block, screw holes are arranged at the edges of the flanges, and the threaded one-way valves are screwed into the flanges and fixed to the main valve block by tightening screws.

[0009] Furthermore, there are four fixing screws that penetrate the adapter plate, the auxiliary valve block and the main valve block, and the four fixing screws are distributed at the four corners of the adapter plate to form a matrix distribution;

[0010] When installing the three-level assembly structure, in order to facilitate the positioning between the adapter plate and the auxiliary valve block, and between the auxiliary valve block and the main valve block, a group of mutually parallel locating pins are arranged at the upper end between the adapter plate and the auxiliary valve block and in the middle of the two fixing screw positions located at the upper end of the adapter plate; a group of mutually parallel locating pins are also arranged at the upper end between the auxiliary valve block and the main valve block corresponding to the height position of the group of locating pins; the adapter plate and the auxiliary valve block are positioned with the locating pins, and the auxiliary valve block and the main valve block are fastened together with fixing screws after being positioned with the locating pins.

[0011] Preferably, the number of positioning pins in each group is two to ensure stability.

[0012] Furthermore, a plurality of connection holes are evenly distributed on the edge of the adapter plate located outside the four fixing screws, and the adapter plate is connected to the external device through the connectors arranged in the connection holes.

[0013] Furthermore, a medium channel is provided inside the main valve block and the auxiliary valve block, and seals are provided outside the medium channel at the joint surface between the main valve block and the auxiliary valve block and the joint surface between the auxiliary valve block and the adapter plate to prevent the medium (oil) in the medium channel from leaking out from the joint surface.

[0014] Furthermore, the auxiliary valve block is provided with a sealing groove near the junction of the main valve block and the adapter plate, and the sealing member is embedded in the sealing groove;

[0015] The sealing member is a rubber sealing ring which is tightly pressed into the sealing member groove.

[0016] Furthermore, the assembled integrated body is entirely made of No. 45 forged steel material.

[0017] The control valve group of the utility model can realize the functions of self-locking, pressure maintaining and pressure adjustment in principle.

[0018] The beneficial effects of adopting the above technical solution are:

[0019] The control valve group adopts international standard valve parts, which is easy to maintain; it has a long service life, allows frequent operation, has high control accuracy, can meet the needs of modern production; and has the characteristics of small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the structural diagram of the electro-hydraulic push rod control valve group.

[0021] Figure 2 for Figure 1 Left view of .

[0022] Figure 3 for Figure 2 CC cross-sectional view.

[0023] Figure 4 for Figure 1 Top view of the .

[0024] Figure 5 for Figure 1 Right view of .

[0025] Figure 6 for Figure 5 AA section view.

[0026] Figure 7 for Figure 5 BB cross-sectional view.

[0027] Figure 8 It is a three-dimensional diagram of the electro-hydraulic push rod control valve group.

[0028] Fig. 9 This is an enlarged view of the seal position inside the control valve group.

[0029] Fig.10 This is the schematic diagram of the electro-hydraulic push rod control valve group.

[0030] In the figure, 1, main valve block, 2, auxiliary valve block, 3, adapter plate, 4, fixing screw, 5, hydraulically controlled one-way valve, 6, threaded one-way valve, 7, cartridge overflow valve, 8, cartridge one-way valve, 9, flange, 10, locating pin, 11, connecting hole, 12, medium channel, 13, sealing member. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0032] like Figure 1-9 The utility model is an electro-hydraulic push rod control valve group, comprising: an assembled integrated body and a control valve unit installed in the assembled integrated body; the assembled integrated body comprises: a main valve block 1, an auxiliary valve block 2, an adapter plate 3 and a fixing screw 4 that penetrates and connects the three; the main valve block 1, the auxiliary valve block 2 and the adapter plate 3 form a three-level assembly structure; one side of the auxiliary valve block 2 is close to the adapter plate 3, and the main valve block 1 is close to the other side of the auxiliary valve block 2, and the adapter plate 3, the auxiliary valve block 2 and the main valve block 1 are sequentially connected through the fixing screw 4 from the outside of the adapter plate 3;

[0033] Furthermore, the control valve unit comprises: a hydraulically controlled one-way valve 5 spirally arranged at both ends of the auxiliary valve block 2, a threaded one-way valve 6 spirally arranged at both ends of the main valve block 1, and a cartridge relief valve 7 and a cartridge one-way valve 8 inserted above the main valve block 1;

[0034] The plug-in relief valve 7 and the plug-in check valve 8 are arranged in pairs, and the positions of the two plug-in relief valves 7 and the two plug-in check valves 8 correspond one to one;

[0035] Furthermore, flanges 9 are provided at the positions of the threaded one-way valves 6 at both ends of the main valve block 1 , screw holes are provided at the edges of the flanges 9 , and the threaded one-way valves 6 are screwed into the flanges 9 and fixed to the main valve block 1 by tightening screws 4 .

[0036] In this embodiment, there are four fixing screws 4 penetrating the adapter plate 3, the auxiliary valve block 2 and the main valve block 1, and the four fixing screws 4 are distributed at the four corners of the adapter plate 3 to form a matrix distribution;

[0037] When installing the three-level assembly structure, in order to facilitate the positioning between the adapter plate 3 and the auxiliary valve block 2, and between the auxiliary valve block 2 and the main valve block 1, a group of mutually parallel locating pins 10 are arranged at the upper end between the adapter plate 3 and the auxiliary valve block 2 and in the middle of the two fixing screws 4 located at the upper end of the adapter plate 3; a group of mutually parallel locating pins 10 are also arranged at the upper end between the auxiliary valve block 2 and the main valve block 1 corresponding to the height position of the group of locating pins 10; the adapter plate 3 and the auxiliary valve block 2 are positioned by the locating pins 10, and the auxiliary valve block 2 and the main valve block 1 are fastened together with the fixing screws 4 after being positioned by the locating pins 10.

[0038] Furthermore, a plurality of connection holes 11 are evenly distributed on the edge of the adapter plate 3 located outside the four fixing screws 4 , and the adapter plate 3 is connected to the external device through the connectors arranged in the connection holes 11 .

[0039] Furthermore, a medium channel 12 is provided inside between the main valve block 1 and the auxiliary valve block 2, and a seal 13 is provided outside the medium channel 12 at the joint surface of the main valve block 1 and the auxiliary valve block 2 and at the joint surface of the auxiliary valve block 2 and the adapter plate 3;

[0040] Furthermore, the auxiliary valve block 2 is provided with a sealing groove near the junction of the main valve block 1 and the adapter plate 3, and the sealing member 13 is embedded in the sealing groove;

[0041] In this embodiment, the sealing member 13 is a rubber sealing ring; the rubber sealing ring is tightly pressed into the sealing member groove.

[0042] In the solution of the utility model, the control valve group in the form of an assembled integrated body is made entirely of No. 45 forged steel material.

[0043] like Fig.10The figure shows the principle diagram of the control valve group, which can realize self-locking, pressure holding, pressure adjustment and other functions. Its characteristics are long service life, frequent operation, high control accuracy, easy maintenance due to the use of international standard valve parts, and small size.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] 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 connection; it can be a mechanical connection or an electrical connection; 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.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. An electro-hydraulic push rod control valve group, characterized in that: include: An assembled integrated body and a control valve unit installed in the assembled integrated body; the assembled integrated body includes: a main valve block, an auxiliary valve block, an adapter plate and fixing screws that penetrate and connect the three; the main valve block, the auxiliary valve block and the adapter plate constitute a three-level assembly structure; one side of the auxiliary valve block is close to the adapter plate, and the main valve block is close to the other side of the auxiliary valve block, and the adapter plate, the auxiliary valve block and the main valve block are sequentially connected together through fixing screws from the outside of the adapter plate.

2. The electro-hydraulic push rod control valve group according to claim 1, characterized in that: The control valve unit comprises: a hydraulically controlled one-way valve spirally arranged at both ends of the auxiliary valve block, a threaded one-way valve spirally arranged at both ends of the main valve block, and a cartridge overflow valve and a cartridge one-way valve inserted above the main valve block.

3. The electro-hydraulic push rod control valve group according to claim 1, characterized in that: Flanges are arranged at the positions of the threaded check valves at both ends of the main valve block, screw holes are arranged at the edges of the flanges, and the threaded check valves are screwed into the flanges and fixed to the main valve block by tightening screws.

4. The electro-hydraulic push rod control valve group according to claim 1, characterized in that: There are four fixing screws penetrating the adapter plate, the auxiliary valve block and the main valve block, and the four fixing screws are distributed at the four corners of the adapter plate to form a matrix distribution.

5. The electro-hydraulic push rod control valve group according to claim 1, characterized in that: A group of mutually parallel locating pins are arranged at the upper end between the adapter plate and the auxiliary valve block and in the middle of the two fixing screw positions at the upper end of the adapter plate; a group of mutually parallel locating pins are also arranged at the upper end between the auxiliary valve block and the main valve block corresponding to the height position of the group of locating pins; the adapter plate and the auxiliary valve block are positioned by the locating pins, and the auxiliary valve block and the main valve block are fastened together with fixing screws after being positioned by the locating pins.

6. The electro-hydraulic push rod control valve group according to claim 4, characterized in that: The adapter plate is evenly provided with a plurality of connection holes on the edge outside the four fixing screws, and the adapter plate is connected to the external device via the connection pieces arranged in the connection holes.

7. The electro-hydraulic push rod control valve group according to claim 1, characterized in that: A medium channel is provided inside between the main valve block and the auxiliary valve block, and seals are provided outside the medium channel at the joint surface between the main valve block and the auxiliary valve block and at the joint surface between the auxiliary valve block and the adapter plate.

8. The electro-hydraulic push rod control valve group according to claim 7, characterized in that: The auxiliary valve block is provided with sealing grooves at the joints of the main valve block and the adapter plate, respectively, and the sealing member is embedded in the sealing grooves.

9. The electro-hydraulic push rod control valve group according to claim 8, characterized in that: The sealing member is a rubber sealing ring which is tightly pressed into the sealing member groove.

10. An electro-hydraulic push rod control valve group according to any one of claims 1 to 9, characterized in that: The assembled integrated body is made entirely of No. 45 forged steel.

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