Hydraulic valve group and rotary joint integrated arrangement structure for large hydraulic wrist

Abstract

The hydraulic valve group and rotary joint integrated arrangement structure for the large hydraulic wrist comprises a main valve, a swing oil cylinder electromagnetic valve is fixedly installed on one side of the top face of the main valve, and a rotary motor electromagnetic valve is installed on the side of the swing oil cylinder electromagnetic valve. An optional accessory electromagnetic valve is fixedly installed on the front side face of the main valve, a thumb clamp electromagnetic valve is fixedly installed on the rear side face of the main valve, a rotating connector is installed on the bottom face of the main valve, a quick-change oil cylinder electromagnetic valve is fixedly installed on the right side face of the main valve, and a main overflow valve is arranged on the rear side of the quick-change oil cylinder electromagnetic valve. The electromagnetic valves, the main valve and the rotary connector are arranged in an integrated mode, the rotary connector is installed on the bottom face of the main valve, the four electromagnetic valves are installed on the left side, the right side and the top face of the main valve respectively, and therefore the electromagnetic valves and the rotary connector are highly integrated on the main valve. The purpose that the hydraulic valve group is highly compact is achieved.

Description

Technical Field

[0001] This utility model relates to the field of excavator attachment technology, specifically to an integrated arrangement structure of hydraulic valve group and rotary joint for a large hydraulic wrist. Background Technology

[0002] During the design and manufacturing of excavator hydraulic wrists, due to limited space, the hydraulic system needs to be highly integrated. Currently, the hydraulic valve assemblies used in hydraulic wrists on the market adopt a side-by-side arrangement structure, that is, the solenoid valves are installed in a row on the top surface of the main valve, and the central rotary joint and valve assembly are separate, which occupies a lot of space and cannot meet the design requirements of a compact hydraulic wrist structure.

[0003] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0004] In response to the problems in related technologies, this utility model proposes an integrated arrangement structure of hydraulic valve assembly and rotary joint for large hydraulic wrist wrists, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] An integrated hydraulic valve assembly and rotary joint structure for a large hydraulic wrist wrist includes a main valve. A swing cylinder solenoid valve is fixedly mounted on one side of the top surface of the main valve. A rotary motor solenoid valve is mounted beside the swing cylinder solenoid valve. An optional attachment solenoid valve is fixedly mounted on the front side of the main valve. A thumb clamp solenoid valve is fixedly mounted on the rear side of the main valve. A rotary joint is mounted on the bottom surface of the main valve. A quick-change cylinder solenoid valve is fixedly mounted on the right side of the main valve. A main relief valve is located on one side of the quick-change cylinder solenoid valve. A rotary motor relief valve is fixedly mounted on the left side of the main valve. Swing cylinder ports are located on both the front and rear sides of the main valve. A rotary joint port is located on the bottom surface of the rotary joint. A rotary motor port is located on the left side of the main valve. A main valve inlet is located on the left side of the main valve. A main valve return port is located on one side of the main valve inlet.

[0007] As a further embodiment of this utility model, the main valve is provided with a multi-directional cross oil circuit inside, and the swing cylinder solenoid valve, rotary motor solenoid valve, thumb clamp solenoid valve, optional attachment solenoid valve, rotary joint, rotary motor overflow valve, main overflow valve and quick-change cylinder solenoid valve are all connected to the built-in oil circuit of the main valve.

[0008] As a further embodiment of this utility model, the two working oil ports of the swing cylinder solenoid valve are connected to the swing cylinder oil ports located on the front and rear sides of the main valve respectively through internal oil passages.

[0009] As a further embodiment of this utility model, the working oil ports of the thumb clamp solenoid valve, the optional attachment solenoid valve, and the quick-change cylinder solenoid valve are respectively connected to the rotary joint oil port located on the bottom surface of the rotary joint through internal oil circuits.

[0010] As a further embodiment of this utility model, the two working oil ports of the rotary motor overflow valve are connected to the two rotary motor oil ports respectively through internal oil passages, which is used to limit the maximum working pressure of the rotary motor.

[0011] As a further embodiment of this utility model, the two working ports of the rotary motor solenoid valve are respectively connected to the two rotary motor ports through internal oil passages, and the two working ports of the main relief valve are respectively connected to the main valve inlet and the main valve return port through internal oil passages, which are used to limit the maximum working pressure of the entire hydraulic system.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model designs an integrated arrangement structure of solenoid valve, main valve and rotary joint. The rotary joint is installed on the bottom surface of the main valve, and four solenoid valves are respectively installed on the left and right sides and the top surface of the main valve, so that the solenoid valve and rotary joint are highly integrated on the main valve, achieving the purpose of highly compact hydraulic valve group. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an integrated hydraulic valve group and rotary joint for a large hydraulic wrist according to an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the installation positions of the main relief valve and the quick-change cylinder solenoid valve in an integrated arrangement structure of hydraulic valve group and rotary joint for a large hydraulic wrist according to an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram showing the position of the rotary joint oil port in a large hydraulic wrist hydraulic valve group and rotary joint integrated arrangement structure according to an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the overall structure of an excavator attachment according to an embodiment of the present utility model, which integrates a hydraulic valve group and a rotary joint for a large hydraulic wrist.

[0019] Figure 5 This is a bottom view of an excavator attachment with an integrated hydraulic valve group and rotary joint structure for a large hydraulic wrist according to an embodiment of the present utility model.

[0020] In the picture:

[0021] 1. Swing cylinder solenoid valve; 2. Rotary motor solenoid valve; 3. Thumb clamp solenoid valve; 4. Optional attachment solenoid valve; 5. Main valve; 6. Rotary joint; 7. Rotary motor oil port; 8. Main valve return port; 9. Main valve inlet port; 10. Rotary motor relief valve; 11. Swing cylinder oil port; 12. Main relief valve; 13. Quick-change cylinder solenoid valve; 14. Rotary joint oil port. Detailed Implementation

[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0023] According to an embodiment of the present invention, an integrated arrangement structure of hydraulic valve assembly and rotary joint for a large hydraulic wrist is provided.

[0024] Please refer to the instruction manual appendix. Figure 1-5 According to an embodiment of this utility model, a large hydraulic wrist hydraulic valve assembly and rotary joint integrated arrangement structure includes a main valve 5. A swing cylinder solenoid valve 1 is fixedly installed on one side of the top surface of the main valve 5. A rotary motor solenoid valve 2 is installed on the side of the swing cylinder solenoid valve 1. An optional attachment solenoid valve 4 is fixedly installed on the front side of the main valve 5. A thumb clamp solenoid valve 3 is fixedly installed on the rear side of the main valve 5. A rotary joint 6 is installed on the bottom surface of the main valve 5. A quick-change cylinder solenoid valve 13 is fixedly installed on the right side of the main valve 5. A main relief valve 12 is provided on one side of the quick-change cylinder solenoid valve 13. A rotary motor relief valve 10 is fixedly installed on the left side of the main valve 5. Swing cylinder ports 11 are provided on both the front and rear sides of the main valve 5. A rotary joint port 14 is provided on the bottom surface of the rotary joint 6. A rotary motor port 7 is provided on the left side of the main valve 5. A main valve inlet port 9 is provided on the left side of the main valve 5. A main valve return port 8 is provided on one side of the main valve inlet port 9.

[0025] The main valve is equipped with a swing cylinder solenoid valve and a rotary motor solenoid valve on its top surface; an optional solenoid valve is installed on the left side of the main valve; a thumb clamp solenoid valve is installed on the right side of the main valve; a rotary joint is installed on the bottom surface of the main valve; a quick-change cylinder solenoid valve and a main relief valve are installed on the back of the main valve; and a rotary motor relief valve is installed in front of the main valve. The inlet and return ports of the swing cylinder solenoid valve, rotary motor solenoid valve, thumb clamp solenoid valve, optional solenoid valve, and quick-change cylinder solenoid valve are connected to the inlet and return ports located in front of the main valve through internal oil passages, respectively. The two working ports of the rotary motor solenoid valve are connected to the two rotary motor ports located in front of the main valve through internal oil passages, respectively. The two working ports of the movable cylinder solenoid valve are connected to the four swing cylinder ports located on the left and right sides of the main valve through internal oil passages; the working ports of the thumb clamp solenoid valve, optional solenoid valve, and quick-change cylinder solenoid valve are connected to the rotary joint port located on the bottom of the rotary joint through internal oil passages; the two working ports of the rotary motor relief valve are connected to the two rotary motor ports located in front of the main valve through internal oil passages to limit the maximum working pressure of the rotary motor; the two working ports of the main relief valve are connected to the inlet and outlet ports located in front of the main valve through internal oil passages to limit the maximum working pressure of the entire hydraulic system.

[0026] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, the main valve 5 is provided with a multi-directional cross oil circuit inside. The swing cylinder solenoid valve 1, the rotary motor solenoid valve 2, the thumb clamp solenoid valve 3, the optional attachment solenoid valve 4, the rotary joint 6, the rotary motor overflow valve 10, the main overflow valve 12, and the quick-change cylinder solenoid valve 13 are all connected to the built-in oil circuit of the main valve 5.

[0027] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, the two working oil ports of the swing cylinder solenoid valve 1 are connected to the two sets of swing cylinder oil ports 11 located on the front and rear sides of the main valve 5 respectively through the internal oil passage.

[0028] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, the working oil ports of the thumb clamp solenoid valve 3, the optional attachment solenoid valve 4, and the quick-change cylinder solenoid valve 13 are respectively connected to the rotary joint oil port 14 located on the bottom surface of the rotary joint 6 through internal oil passages.

[0029] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, the two working oil ports of the rotary motor overflow valve 10 are connected to the two rotary motor oil ports 7 respectively through internal oil passages.

[0030] In one embodiment, please refer to the appendix to the specification. Figure 1-5As a further embodiment of this utility model, the two working oil ports of the main overflow valve 12 are connected to the main valve inlet 9 and the main valve return port 8 respectively through internal oil passages.

[0031] Appendix Figure 4 In the middle, the vertical cylinders on the front and rear sides are swing cylinders, the horizontal cylinders set in the front and rear are rotary motors, and the arc-shaped cross plates of the device are thumb clamps.

[0032] Appendix Figure 5 In the middle, the bottom of the device has optional attachment oil ports on the front and rear sides, and a quick-change oil cylinder is installed in the center of the bottom of the device.

[0033] This utility model designs an integrated arrangement structure of solenoid valve, main valve and rotary joint. The rotary joint is installed on the bottom surface of the main valve, and four solenoid valves are respectively installed on the left and right sides and the top surface of the main valve, so that the solenoid valve and rotary joint are highly integrated on the main valve, achieving the purpose of highly compact hydraulic valve group.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An arrangement of hydraulic valve groups integrated with rotary joints for large hydraulic wrists, comprising a main valve (5), characterized in that: The top side of the main valve (5) is fixedly installed with a swing oil cylinder electromagnetic valve (1), the side of the swing oil cylinder electromagnetic valve (1) is installed with a rotary motor electromagnetic valve (2), the front side of the main valve (5) is fixedly installed with an optional tool electromagnetic valve (4), the rear side of the main valve (5) is fixedly installed with a thumb clamp electromagnetic valve (3), the bottom of the main valve (5) is installed with a rotary joint (6), the right side of the main valve (5) is fixedly installed with a quick-change oil cylinder electromagnetic valve (13), one side of the quick-change oil cylinder electromagnetic valve (13) is provided with a main overflow valve (12), the left side of the main valve (5) is fixedly installed with a rotary motor overflow valve (10); The front and rear sides of the main valve (5) are provided with swing oil cylinder oil ports (11), the bottom of the rotary joint (6) is provided with a rotary joint oil port (14), the left side of the main valve (5) is provided with a rotary motor oil port (7), the left side of the main valve (5) is provided with a main valve oil inlet (9), one side of the main valve oil inlet (9) is provided with a main valve oil return port (8).

2. The hydraulic valve group and rotary joint integrated arrangement structure for a large hydraulic wrist according to claim 1, characterized in that: The inside of the main valve (5) is provided with a multi-directional cross oil circuit, the swing oil cylinder electromagnetic valve (1), the rotary motor electromagnetic valve (2), the thumb clamp electromagnetic valve (3), the optional tool electromagnetic valve (4), the rotary joint (6), the rotary motor overflow valve (10), the main overflow valve (12) and the quick-change oil cylinder electromagnetic valve (13) are all in communication with the built-in oil circuit of the main valve (5).

3. The hydraulic valve group and rotary joint integrated arrangement structure for a large hydraulic wrist according to claim 1, characterized in that: The two working oil ports of the swing oil cylinder electromagnetic valve (1) are respectively communicated with the swing oil cylinder oil ports (11) located at the front and rear sides of the main valve (5) through the internal oil circuit.

4. The hydraulic valve group and rotary joint integrated arrangement structure for a large hydraulic wrist according to claim 1, characterized in that: The working oil ports of the thumb clamp electromagnetic valve (3), the optional tool electromagnetic valve (4) and the quick-change oil cylinder electromagnetic valve (13) are respectively communicated with the rotary joint oil port (14) located at the bottom of the rotary joint (6) through the internal oil circuit.

5. The hydraulic valve group and rotary union integrated arrangement for a large hydraulic wrist of claim 1, wherein: The two working oil ports of the rotary motor electromagnetic valve (2) and the rotary motor overflow valve (10) are respectively communicated with the two rotary motor oil ports (7) through the internal oil circuit.

6. The hydraulic valve group and rotary union integrated arrangement for a large hydraulic wrist of claim 1, wherein: The two working oil ports of the main overflow valve (12) are respectively communicated with the main valve oil inlet (9) and the main valve oil return port (8) through the internal oil circuit.

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