Adjustable oil pressure damper

Abstract

The application provides an adjustable oil pressure buffer, which comprises a body, an end cover arranged in the body, the end cover being fixedly connected with the body, a flow adjusting plug arranged in the end cover, the flow adjusting plug extending out of the body, an adjusting knob rotatably connected with the body, the adjusting knob being fixedly connected with the flow adjusting plug, a flow adjusting hole arranged on the end cover, and a flow adjusting curved surface arranged opposite to the flow adjusting hole, the height of the flow adjusting curved surface gradually decreasing, the height difference between the flow adjusting curved surface and the flow adjusting hole being adjusted by rotating the adjusting knob to adjust the opening between the flow adjusting hole and the flow adjusting plug, the flow being controlled by rotating the adjusting knob to drive the flow adjusting plug to rotate synchronously and gradually close the flow adjusting hole arranged on the end cover, and the damping force being adjusted, the upper part of the adjusting mechanism being an open space, and the influence of foreign matter accumulation on flow adjustment being avoided.

Description

Technical Field

[0001] This invention relates to the field of industrial hydraulic damper technology, and more particularly to an adjustable hydraulic damper. Background Technology

[0002] Industrial hydraulic shock absorbers are energy absorption components used in the automation industry. They can absorb the kinetic energy of moving objects, enabling them to decelerate smoothly and stop stably; thus improving production efficiency and extending equipment life.

[0003] Hydraulic dampers are classified into adjustable and non-adjustable types according to their damping effect. Non-adjustable dampers have a fixed damping effect and lack a flow regulation orifice in the oil circuit. Adjustable dampers have an internal flow regulation orifice, whose cross-sectional area can be adjusted to regulate the flow rate and thus the damping force. A larger orifice cross-sectional area allows hydraulic oil to flow more easily through the orifice, resulting in a smaller damping force. Conversely, a smaller orifice cross-sectional area makes it harder for hydraulic oil to flow through, increasing the damping force. Users can adjust the flow rate to optimize the product's performance.

[0004] Existing adjustable hydraulic damper structures, such as Figure 1 and 2 As shown, the adjustment is achieved by rotating the adjustment knob 1, which in turn drives the flow adjustment plug 2 to rotate synchronously. The flow adjustment plug 2 has a 270-degree V-shaped eccentric flow groove 3. The groove's cross-sectional area is largest at 0 degrees, gradually decreasing from 0 degrees to 270 degrees. The end cap 4 has a fixed-size hole 5 corresponding to the eccentric flow groove of the flow adjustment plug 2. The two work together to adjust the flow rate. However, in this structure, the machining accuracy of the eccentric flow groove 3 of the flow adjustment plug 2 is difficult to control and also inconvenient to inspect. Summary of the Invention

[0005] The present invention aims to provide an adjustable hydraulic damper to overcome the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: an adjustable hydraulic damper, including a body, an end cap provided inside the body, the end cap being fixedly connected to the body, a flow regulating bolt provided inside the end cap, the flow regulating bolt extending out of the body, an adjustment knob rotatably connected to the body, the adjustment knob being fixedly connected to the flow regulating bolt, a flow regulating hole provided on the end cap, a flow regulating curved surface provided at the position of the flow regulating bolt opposite the flow regulating hole, the height of the flow regulating curved surface gradually decreasing, and the opening between the flow regulating hole and the flow regulating bolt being adjusted by rotating the adjustment knob to adjust the height difference between the flow regulating curved surface and the flow regulating hole.

[0007] As an improvement to the adjustable hydraulic damper of the present invention, the flow regulating surface of the flow regulating plug shown has a rotation range of 0 degrees to 320 degrees.

[0008] As an improvement of the adjustable hydraulic damper of the present invention, an inner cylinder is provided inside the main body. The inner cylinder is interference-fitted with the end cover. A guide bearing is provided inside the main body. A piston is provided inside the inner cylinder. The guide bearing is slidably connected to the piston rod. The piston rod is fixedly connected to the piston. An oil return hole is opened at one end of the inner cylinder near the piston. A space is left between the inner cylinder and the main body. This space is used for communication between the oil return hole and the flow regulating hole.

[0009] As an improvement of the adjustable hydraulic damper of the present invention, the piston rod is connected to an impact head, and a spring is installed between the impact head and the guide bearing.

[0010] As an improvement of the adjustable hydraulic damper of the present invention, the adjusting knob is provided with a fixing screw along the radial direction, the fixing screw being used to fix the adjusting knob and the flow regulating plug.

[0011] Compared with the prior art, the advantages of this invention are: the flow regulation is located at the end of the flow regulation plug, resulting in a wider adjustment range, reaching over 320°, and making it easier to achieve precise adjustment. By rotating the adjustment knob, the flow regulation plug rotates synchronously to gradually close the flow regulation hole on the end cap, thereby controlling the flow and adjusting the damping force. The upper part of the adjustment mechanism is an open space, which can effectively avoid the impact of foreign matter accumulation on flow regulation. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a buffer structure in the background art;

[0014] Figure 2 This is a schematic diagram of the flow regulating plug structure in the background art;

[0015] Figure 3 This is a schematic diagram of the structure of the buffer of the present invention;

[0016] Figure 4 This is a schematic diagram of the flow regulating plug of the present invention;

[0017] Figure 5This is a detailed view of the end cap and flow regulating plug of the present invention.

[0018] The components include: 1. Adjustment knob; 2. Flow adjustment plug; 3. Eccentric flow groove; 4. End cap; 5. Hole; 6. Body; 7. End cap; 8. Flow adjustment plug; 9. Adjustment knob; 10. Flow adjustment hole; 11. Flow adjustment curved surface; 12. Inner cylinder; 13. Guide bearing; 14. Piston; 15. Piston rod; 16. Oil return hole; 17. Impact head; 18. Spring; 19. Fixing screw. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 3 to 5 As shown, an adjustable hydraulic damper includes a body 6, an end cap 7 is provided inside the body 6 and is fixedly connected to the body 6, a flow regulating plug 8 is provided inside the end cap 7 and extends out of the body 6, an adjustment knob 9 is rotatably connected to the body 6 and is fixedly connected to the flow regulating plug 8, a flow regulating hole 10 is provided on the end cap 7, and a flow regulating curved surface 11 is provided on the flow regulating plug 8 opposite to the flow regulating hole 10. The height of the flow regulating curved surface 11 gradually decreases. The opening between the flow regulating hole 10 and the flow regulating plug 8 is adjusted by rotating the adjustment knob 9 to adjust the height difference between the flow regulating curved surface 11 and the flow regulating hole 10.

[0021] By rotating the adjustment knob 9, the flow regulating plug 8 is driven to rotate synchronously, gradually closing the flow regulating hole 10 on the end cover 7, thereby controlling the flow and adjusting the damping force.

[0022] The flow regulating surface 11 of the flow regulating plug 8 shown has a rotation range of 0 degrees to 320 degrees.

[0023] By placing the flow rate adjustment at the end of the flow rate adjustment plug 8, the adjustment range is wider, reaching over 320°, making it easier to achieve precise adjustment.

[0024] The main body 6 has an inner cylinder 12 inside, which is interference-fitted with the end cover 7. The main body 6 has a guide bearing 13 inside, and a piston 14 is installed inside the inner cylinder 12. The guide bearing 13 is slidably connected to the piston rod 15, and the piston rod 15 is fixedly connected to the piston 14. An oil return hole 16 is opened at one end of the inner cylinder 12 near the piston 14. There is a space between the inner cylinder 12 and the main body 6, which is used for the communication between the oil return hole 16 and the flow regulating hole 10.

[0025] The upper part of the adjustment mechanism is an open space, which can effectively prevent the accumulation of foreign objects from affecting the flow regulation.

[0026] The piston rod 15 is connected to an impact head 17, and a spring 18 is installed between the impact head 17 and the guide bearing 13. The spring 18 is used to slow down the speed at which the impact head 17 pushes the piston rod 15 and the piston 14, thereby ensuring that the extrusion process is carried out slowly.

[0027] The adjustment knob 9 is provided with a fixing screw 19 in the radial direction. The fixing screw 19 is used to fix the adjustment knob 9 and the flow regulating plug 8.

[0028] This damper places the flow regulation at the end of the flow regulation plug 8, providing a wider adjustment range of over 320° and making precise adjustment easier. By rotating the adjustment knob 9, the flow regulation plug 8 rotates synchronously, gradually closing the flow regulation hole 10 on the end cover 7, thereby controlling the flow and adjusting the damping force. The upper part of this adjustment mechanism is an open space, which can effectively prevent the accumulation of foreign objects from affecting the flow regulation.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable hydraulic damper, comprising a body, characterized in that, An end cap is provided inside the main body and is fixedly connected to the main body. A flow regulating plug is provided inside the end cap and extends out of the main body. An adjustment knob is rotatably connected to the main body and is fixedly connected to the flow regulating plug. A flow regulating hole is provided on the end cap. A flow regulating curved surface is provided on the flow regulating plug opposite to the flow regulating hole. The height of the flow regulating curved surface gradually decreases. The opening between the flow regulating hole and the flow regulating plug is adjusted by rotating the adjustment knob to adjust the height difference between the flow regulating curved surface and the flow regulating hole. The flow regulating curved surface is located on the end face of the flow regulating plug, forming an adjustment mechanism with an open space at the top. The flow regulating surface of the flow regulating plug has a rotation range of 0 degrees to 320 degrees; The adjustment knob is provided with a fixing screw along the radial direction, which is used to fix the adjustment knob and the flow regulating plug.

2. The adjustable hydraulic damper according to claim 1, characterized in that, The main body has an inner cylinder inside, which is interference-fitted with the end cover. The main body has a guide bearing inside, and the inner cylinder is equipped with a piston. The guide bearing is slidably connected to the piston rod, which is fixedly connected to the piston. The end of the inner cylinder near the piston has an oil return hole. There is a space between the inner cylinder and the main body, which is used for the connection between the oil return hole and the flow regulating hole.

3. An adjustable hydraulic damper according to claim 2, characterized in that, The piston rod is connected to an impact head, and a spring is installed between the impact head and the guide bearing.

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