An integrated hydraulic drive block

Abstract

The present invention provides an integrated hydraulic drive block, including a drive block body, a plurality of high-pressure accumulator interfaces are provided on the top of the drive block body, a plurality of back-pressure accumulator interfaces are provided on the left side, an oil inlet is provided on the bottom, an exhaust valve interface is provided on the right side, a No. 1 check valve interface, a back-pressure relief valve interface, and a No. 2 check valve interface are provided on the rear side from left to right, an oil outlet is provided on the lower rear side, a low-pressure pressure gauge interface and a high-pressure pressure gauge interface are provided on one side of the top, and two high-pressure relief valve interfaces are provided on one side of the high-pressure pressure gauge interface. The integrated hydraulic drive block described in the present invention can integrate low-pressure oil circuits and high-pressure oil circuits; can integrate the installation of structures such as a voltage stabilizer, a pressure gauge, a check valve, and a relief valve; through the integration of high and low-pressure oil circuits, the risk of system oil leakage is reduced and the system response is improved; a hydraulic valve block can meet the adjustable valve requirements of multiple cylinders, improve the integration of the overall structure, and reduce the layout space of the whole machine.

Description

Technical Field

[0001] The invention belongs to the technical field of engine valve equipment, and in particular relates to an integrated hydraulic drive block. Background Art

[0002] At present, camless electro-hydraulic valve mechanisms need high-pressure and low-pressure oil sources to drive the opening and closing of valves, and also require solenoid valves, pressure gauges, voltage regulators and other components to control the oil circuit. In the past, camless electro-hydraulic valve mechanisms were either equipped with large pressure stabilizing chambers or required complex oil circuit systems, which increased the system response accuracy and had more leakage points. Summary of the invention

[0003] In view of this, the present invention aims to provide an integrated hydraulic drive block to solve the above-mentioned deficiencies in the prior art.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] An integrated hydraulic drive block comprises a drive block body, the drive block body is a stepped structure, a plurality of high-pressure accumulator interfaces are evenly arranged on the top of the drive block body, a plurality of back-pressure accumulator interfaces are evenly arranged on the left side of the drive block body, an oil inlet is arranged on the bottom of the drive block body, an exhaust valve interface is arranged on the right side of the drive block body, a No. 1 check valve interface, a back-pressure relief valve interface, and a No. 2 check valve interface are respectively arranged on the rear side of the drive block body from left to right, an oil outlet is also arranged on the rear side of the drive block body near the No. 1 check valve interface, and the top of the drive block body is provided with a plurality of high-pressure accumulator interfaces, a plurality of back-pressure accumulator interfaces are evenly arranged on the left side of the drive block body, and a plurality of high-pressure accumulator interfaces are evenly arranged on the left side of the drive block body. A low-pressure pressure gauge interface and a high-pressure pressure gauge interface are respectively provided on the side close to the high-pressure accumulator interface, and two high-pressure relief valve interfaces are also provided on the side of the high-pressure pressure gauge interface. An accumulator structure is installed in each high-pressure accumulator interface and each back-pressure accumulator interface, an exhaust valve structure is installed in the exhaust valve interface, a one-way valve structure is installed in the No. 1 one-way valve interface and the No. 2 one-way valve interface respectively, a relief valve structure is installed in the back-pressure relief valve interface and the high-pressure relief valve interface respectively, and a pressure gauge structure is installed in the low-pressure pressure gauge interface and the high-pressure pressure gauge interface respectively.

[0006] Furthermore, the number of the high-pressure accumulator interfaces and the number of the back-pressure accumulator interfaces are the same.

[0007] Furthermore, the number of the high-pressure accumulator interfaces is 4.

[0008] Furthermore, a high-pressure oil circuit, a low-pressure oil circuit, an oil inlet oil circuit and an oil return oil circuit are respectively opened inside the driving block body.

[0009] Furthermore, the three high-pressure accumulator interfaces and the high-pressure pressure gauge interface are all connected to the high-pressure oil circuit.

[0010] Furthermore, the four back-pressure accumulator interfaces, one high-pressure accumulator interface, a No. 1 one-way valve interface, and a low-pressure pressure gauge interface are connected to the oil return circuit.

[0011] Furthermore, the exhaust valve interface, the back pressure relief valve interface, and the two high pressure relief valve interfaces are connected to the low pressure oil circuit and the oil inlet oil circuit respectively.

[0012] Furthermore, the No. 2 one-way valve interface is respectively connected to the high-pressure oil circuit and the oil inlet circuit.

[0013] Compared with the prior art, the integrated hydraulic drive block described in the present invention has the following advantages:

[0014] The integrated hydraulic drive block described in the present invention can integrate low-pressure oil circuits and high-pressure oil circuits; can integrate the installation of structures such as a voltage stabilizer, a pressure gauge, a one-way valve, and a relief valve; through the integration of high- and low-pressure oil circuits, the risk of system oil leakage is reduced and the system response is improved; one hydraulic valve block can meet the adjustable valve requirements of multiple cylinders, thereby improving the integration of the overall structure and reducing the layout space of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the overall structure integrating a voltage stabilizer, a pressure gauge, a one-way valve, a relief valve, etc. according to an embodiment of the present invention;

[0017] Figure 2 It is a perspective schematic diagram of the overall structure according to an embodiment of the present invention;

[0018] Figure 3 Based Figure 1 Schematic diagram from top view;

[0019] Figure 4 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 5 It is a schematic rear view of the overall structure described in an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1. Drive block body; 11. High-pressure accumulator interface; 12. Back-pressure accumulator interface; 13. Oil inlet; 14. Exhaust valve interface; 15. No. 1 check valve interface; 16. Oil outlet; 17. Back-pressure relief valve interface; 18. No. 2 check valve interface; 19. Low-pressure pressure gauge interface; 110. High-pressure pressure gauge interface; 111. High-pressure relief valve interface; 2. Accumulator structure; 3. Exhaust valve structure; 4. Pressure gauge structure; 5. Check valve structure; 6. Relief valve structure. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] like Figures 1 to 5As shown, an integrated hydraulic drive block includes a drive block body 1, the drive block body 1 is a stepped structure, a plurality of high-pressure accumulator interfaces 11 are evenly arranged on the top of the drive block body 1, a plurality of back-pressure accumulator interfaces 12 are evenly arranged on the left side of the drive block body 1, an oil inlet 13 is arranged at the bottom of the drive block body 1, an exhaust valve interface 14 is arranged on the right side of the drive block body 1, a No. 1 check valve interface 15, a back-pressure relief valve interface 17, and a No. 2 check valve interface 18 are respectively arranged on the rear side of the drive block body 1 from left to right, an oil outlet 16 is also arranged on the rear side of the drive block body 1 near the No. 1 check valve interface 15, and a No. 2 check valve interface 18 is arranged on the rear side of the drive block body 1 near the bottom of the No. 1 check valve interface 15. A low-pressure pressure gauge interface 19 and a high-pressure pressure gauge interface 110 are respectively provided on one side of the accumulator interface 11. Two high-pressure relief valve interfaces 111 are also provided on one side of the high-pressure pressure gauge interface 110. An accumulator structure 2 is installed in each high-pressure accumulator interface 11 and each back-pressure accumulator interface 12. An exhaust valve structure 3 is installed in the exhaust valve interface 14. A one-way valve structure 5 is installed in the No. 1 one-way valve interface 15 and the No. 2 one-way valve interface 18 respectively. A relief valve structure 6 is installed in the back-pressure relief valve interface 17 and the high-pressure relief valve interface 111 respectively. A pressure gauge structure 4 is installed in the low-pressure pressure gauge interface 19 and the high-pressure pressure gauge interface 110 respectively. This integrated hydraulic drive block can integrate low-pressure oil circuits and high-pressure oil circuits; it can integrate the installation of structures such as voltage stabilizers, pressure gauges, one-way valves, and relief valves; through the integration of high- and low-pressure oil circuits, the risk of system oil leakage is reduced and the system response is improved; one hydraulic valve block can meet the adjustable valve requirements of multiple cylinders, improve the integration of the overall structure, and reduce the layout space of the entire machine.

[0028] The number of the high-pressure accumulator interfaces 11 and the number of the back-pressure accumulator interfaces 12 are the same. The number of the high-pressure accumulator interfaces 11 is 4. In actual use, the number of the high-pressure accumulator interfaces 11 and the number of the back-pressure accumulator interfaces 12 can be determined according to actual conditions.

[0029] The driving block body 1 is also provided with a high-pressure oil circuit, a low-pressure oil circuit, an oil inlet oil circuit and an oil return oil circuit. Figure 2 The 1-3 high-pressure accumulator interfaces 11 and the high-pressure pressure gauge interface 110 on the right side are all connected to the high-pressure oil circuit. Figure 2The leftmost high-pressure accumulator interface 11), the No. 1 check valve interface 15, and the low-pressure pressure gauge interface 19 are connected to the return oil circuit. The exhaust valve interface 14, the back pressure relief valve interface 17, and the two high-pressure relief valve interfaces 111 are respectively connected to the low-pressure oil circuit and the oil inlet oil circuit. The No. 2 check valve interface 18 is respectively connected to the high-pressure oil circuit and the oil inlet oil circuit. In this embodiment, the accumulator structure 2, the exhaust valve structure 3, and the pressure gauge structure 4 are all existing accumulators, exhaust valves, and pressure gauges.

[0030] Example 1

[0031] The overall structure of the hydraulic valve block is as follows Figure 1 , the internal oil circuit is arranged as follows Figure 2 , where a is the high-pressure oil circuit, b is the low-pressure oil circuit, c is the oil inlet circuit, and d is the oil return circuit.

[0032] When the valve is opened, the hydraulic oil flows through the oil inlet, through the red oil channel of the hydraulic valve block, and into the oil chamber of the valve drive mechanism, thereby driving the valve to move; the oil in the cylinder on the other side passes through the valve drive mechanism into the yellow oil channel in the hydraulic valve block and the back pressure relief valve and is squeezed back into the oil tank.

[0033] When the valve returns, the valve enters the return movement under the action of the return spring. Most of the oil in the oil chamber that originally entered the high-pressure oil enters the oil cylinder through the high-frequency solenoid valve, and part of the oil returns to the yellow oil channel of the hydraulic valve block, and then squeezes back into the oil tank through the back pressure relief valve. If the oil that originally entered the high-pressure oil chamber is not enough to replenish the vacuum caused by the other side of the oil chamber when the piston returns, the back pressure oil will also flow from the external oil supply system through the back pressure oil circuit check valve into the back pressure oil circuit and then through the yellow oil channel into the valve assembly valve block, and then flow into the corresponding oil chamber.

[0034] To prevent accidents, a system overflow valve is set in the hydraulic valve block to protect the oil circuit. The actual oil circuit direction is: the high-pressure oil overflows through the system overflow valve into the blue low-pressure oil channel, and then returns to the oil tank through the oil return port.

[0035] Before the system is started for the first time, the system is filled with gas. The presence of a large amount of gas will cause the overall properties of the hydraulic oil, especially the compressibility, to change, affecting the system response. Therefore, the system needs to be vented before starting. After the hydraulic oil supplied by the oil supply system enters the valve plate assembly valve block through the oil inlet, if the flow is large and there is a lot of gas, the exhaust valve opens to discharge the gas and liquid mixture.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated hydraulic drive block, characterized in that: The invention comprises a driving block body (1), wherein the driving block body (1) is of a stepped structure, a plurality of high-pressure accumulator interfaces (11) are evenly arranged on the top of the driving block body (1), a plurality of back-pressure accumulator interfaces (12) are evenly arranged on the left side of the driving block body (1), an oil inlet (13) is arranged on the bottom of the driving block body (1), an exhaust valve interface (14) is arranged on the right side of the driving block body (1), a first check valve interface (15), a back-pressure relief valve interface (17), and a second check valve interface (18) are respectively arranged on the rear side of the driving block body (1) from left to right, an oil outlet (16) is also arranged on the rear side of the driving block body (1) near the first check valve interface (15), and a high-pressure accumulator interface (12) is evenly arranged on the top of the driving block body (1) near the high-pressure accumulator interface (1 1) A low-pressure gauge interface (19) and a high-pressure gauge interface (110) are respectively provided on one side; two high-pressure relief valve interfaces (111) are also provided on one side of the high-pressure gauge interface (110); each high-pressure accumulator interface (11) and each back-pressure accumulator interface (12) are equipped with an accumulator structure (2); the exhaust valve interface (14) is equipped with an exhaust valve structure (3); the first check valve interface (15) and the second check valve interface (18) are respectively equipped with a check valve structure (5); the back-pressure relief valve interface (17) and the high-pressure relief valve interface (111) are respectively equipped with a relief valve structure (6); and the low-pressure gauge interface (19) and the high-pressure gauge interface (110) are respectively equipped with a pressure gauge structure (4); The number of the high-pressure accumulator interfaces (11) and the number of the back-pressure accumulator interfaces (12) are the same; The number of the high-pressure accumulator interfaces (11) is 4; A high-pressure oil circuit, a low-pressure oil circuit, an oil inlet oil circuit and an oil return oil circuit are respectively provided inside the driving block body (1).

2. The integrated hydraulic drive block according to claim 1, characterized in that: The three high-pressure accumulator interfaces (11) and the high-pressure pressure gauge interface (110) are all connected to the high-pressure oil circuit.

3. The integrated hydraulic drive block according to claim 1, characterized in that: The four back-pressure accumulator interfaces (12), a high-pressure accumulator interface (11), a No. 1 check valve interface (15), and a low-pressure pressure gauge interface (19) are connected to the oil return line.

4. The integrated hydraulic drive block according to claim 1, characterized in that: The exhaust valve interface (14), the back pressure relief valve interface (17), and the two high pressure relief valve interfaces (111) are respectively connected to the low pressure oil circuit and the oil inlet oil circuit.

5. The integrated hydraulic drive block according to claim 1, characterized in that: The second check valve interface (18) is respectively connected to the high-pressure oil circuit and the oil inlet oil circuit.

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