Low-noise oil pressure damping buffer
By incorporating a second impact cone, a buffer spring, and other structures into the hydraulic damping buffer, the problems of noise and impact force during impact are solved, achieving a buffering effect with low noise and high stability, and extending the service life of the impact head.
Patent Information
- Application Number
- CN202423168674.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing hydraulic damping buffers generate significant noise upon impact, affecting the working environment and failing to effectively mitigate the impact force of the impact head, resulting in a shortened lifespan of the impact head.
By incorporating a second impact cone to reduce the contact area, a buffer spring to mitigate the impact force, and a combination of buffer pads, limit rods, and adjustment plates, noise and buffering force are adjusted, thereby improving stability and service life.
It effectively reduces noise and impact force during impact, lowers working environment noise, extends the service life of the impact head, and adapts to different working needs.
Smart Images
Figure CN223511398U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of damping buffers, in particular to a low-noise oil pressure damping buffer. BACKGROUND
[0002] The oil pressure damping buffer is a damping device widely used in industrial, transportation and military fields, which realizes damping effect by utilizing the viscous force generated when hydraulic oil flows. With the continuous progress of technology and the expansion of market demand, the oil pressure damping buffer gradually develops towards low noise and high performance.
[0003] The existing oil pressure damping buffer will generate a large noise when being impacted, which will have a certain impact on the working environment, and cannot reduce the impact force on the impact head, and is easy to damage the impact head, thereby affecting the service life of the impact head. CONTENT OF THE INVENTION
[0004] In view of the defects of the prior art, the application provides a low-noise oil pressure damping buffer, which has the advantages of reducing the noise generated when the impact head is impacted, reducing the noise of the working environment, reducing the impact force on the impact head, and prolonging the service life of the impact head, and solves the problems that the existing oil pressure damping buffer generates a large noise when being impacted, which has a certain impact on the working environment, and cannot reduce the impact force on the impact head, and is easy to damage the impact head, thereby affecting the service life of the impact head.
[0005] In order to achieve the above-mentioned purposes of reducing the noise generated when the impact head is impacted, reducing the noise of the working environment, reducing the impact force on the impact head, and prolonging the service life of the impact head, the application provides the following technical scheme: a low-noise oil pressure damping buffer, comprising an oil cylinder, a push rod is sleeved on the inner wall of one end of the oil cylinder, a piston plate is arranged at one end of the push rod, the piston plate is slidingly arranged in the inner wall of the middle part of the oil cylinder, an oil hole is formed in the outer surface of the middle part of the piston plate, a return spring is arranged on the top of the piston plate, one end of the return spring is arranged on the bottom of a fixed ring, the outer surface of the middle part of the fixed ring is arranged in the inner wall of the middle part of the oil cylinder, a first push plate is arranged at the other end of the push rod, a buffer spring is arranged on the top of the first push plate, one end of the buffer spring is arranged on the bottom of a second push plate, a second impact cone is arranged on the top of the second push plate, a first impact cone is arranged on the top of the first push plate, the number of the first impact cones is four, the four first impact cones are arranged in an annular array on the top of the first push plate, the number of the second impact cones is four, the four second impact cones are arranged in an annular array on the top of the second push plate, and the first impact cones and the second impact cones are made of rubber.
[0006] Through the above scheme, the contact area of the single second impact cone with the workpiece can be reduced by setting the number of the second impact cones, the impact force on the second impact cone when being impacted can be reduced, and the noise generated when being impacted can be reduced, so as to reduce the noise generated when the impact head is impacted, reduce the noise of the working environment, reduce the impact force on the impact head, and prolong the service life of the impact head.
[0007] Further, the second push plate is provided with a buffer pad at the bottom, and the number and position of the buffer pad correspond to the number and position of the first impact cone.
[0008] Through the above scheme, the impact force of the second push plate moving towards the first push plate can be reduced by setting the buffer pad matched with the first impact cone, and the noise of the second push plate moving towards the first push plate can be reduced by matching the first impact cone with the buffer pad.
[0009] Further, the second push plate is provided with a buffer pad at the bottom, and the number and position of the buffer pad correspond to the number and position of the first impact cone.
[0010] Through the above scheme, the angle of the second push plate when moving can be limited by setting the limiting rod, and the stability of the second push plate when moving can be improved.
[0011] Further, the bottom of the piston plate is slidably provided with an adjusting plate, and the number and position of the adjusting plate correspond to the number and position of the oil hole.
[0012] Through the above scheme, the size of the oil hole can be adjusted by setting the adjusting plate, and then the moving speed of the piston plate in the oil cylinder can be adjusted.
[0013] Further, the bottom of the piston plate is provided with a slide rod, the outer surface of the middle part of the slide rod is slidably provided with a slide sleeve, and the top of the slide sleeve is provided at the bottom of the adjusting plate through a fixed rod.
[0014] Through the above scheme, the track of the adjusting plate when moving can be limited by sliding the inner wall of the middle part of the slide sleeve on the outer surface of the middle part of the slide rod, the stability of the adjusting plate when moving can be improved, and the adjusting plate can always be attached to the bottom of the piston plate.
[0015] Further, the bottom of the adjusting plate is provided with a telescopic inner rod, one end of the telescopic inner rod is inserted into the inner wall of one end of a telescopic outer tube, the other end of the telescopic outer tube is provided at the top of a connecting plate, and the bottom of the connecting plate is provided with a rotating plate through a fixed rod.
[0016] Through the above scheme, rotating the rotating plate can drive the adjusting plate to move through the telescopic inner rod matched with the telescopic outer tube, and the connecting plate can still drive the adjusting plate to move after the piston plate moves in position through the telescopic inner rod matched with the telescopic outer tube.
[0017] Further, the inner wall of the middle part of the oil cylinder is provided with two limiting rings, and the two limiting rings are located on the upper and lower sides of the connecting plate respectively, and the outer surface of the middle part of the connecting plate is in sliding connection with the outer surface of one side of the limiting ring.
[0018] Through the above scheme, the position of the connecting plate can be fixed through the setting of the two limiting rings, and the stability during rotation of the connecting plate is improved.
[0019] Further, the bottom of the first push plate is provided with a connecting ring through a fixing rod, the inner wall of the middle part of the connecting ring is provided with a buffer sleeve, the inner wall of the middle part of the buffer sleeve is in sliding connection with the outer surface of the middle part of the limiting rod, the buffer sleeve is made of antiskid rubber material, and the buffer sleeve is in a funnel shape.
[0020] Through the above scheme, the speed of the limiting rod during resetting can be slowed down through the setting of the buffer sleeve, and then the speed of the second push plate driven by the buffer spring during movement is slowed down, so that resonance noise caused by the buffer spring driving the second push plate to reset at too high a speed is avoided.
[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:
[0022] The low-noise oil pressure damping buffer can reduce the contact area of a single second impact cone with a workpiece, reduce the noise generated during impact, and further reduce the impact force of the second impact cone during impact and the noise generated during impact through the setting of the buffer spring, so as to reduce the noise generated when the impact head is impacted, reduce the noise in the working environment, reduce the impact force received by the impact head, and improve the service life of the impact head.
[0023] The low-noise oil pressure damping buffer can adjust the buffering force of the oil pressure damping buffer, change the buffering speed of the oil pressure damping buffer, and thus adapt to different working requirements and application scenarios. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a three-dimensional structure schematic diagram of the present application;
[0025] Figure 2 It is a front structure schematic diagram of the present application;
[0026] Figure 3 It is a three-dimensional sectional structure schematic diagram of the present application;
[0027] Figure 4 It is a front sectional structure schematic diagram of the present application;
[0028] Figure 5 It is a front sectional structure schematic diagram of the connecting ring and the buffer sleeve of the present application;
[0029] Figure 6 This is a bottom view of the piston plate structure of this application.
[0030] In the picture:
[0031] 1. Hydraulic cylinder; 2. Push rod; 3. Piston plate; 4. Oil hole; 5. First push plate; 6. Buffer spring; 7. Second push plate; 8. Second impact cone; 9. First impact cone; 10. Buffer pad; 11. Limiting rod; 12. Connecting ring; 13. Buffer sleeve; 14. Return spring; 15. Fixing ring; 16. Adjusting plate; 17. Telescopic inner rod; 18. Telescopic outer tube; 19. Connecting plate; 20. Rotating plate; 21. Limiting ring; 22. Slide rod; 23. Slide sleeve. Detailed Implementation
[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0033] Please see Figure 1 , Figure 3 and Figure 4 This embodiment of a low-noise hydraulic damping buffer includes a hydraulic cylinder 1. A push rod 2 is sleeved on the inner wall of one end of the hydraulic cylinder 1. A piston plate 3 is provided at one end of the push rod 2. The piston plate 3 is slidably disposed in the inner wall of the middle part of the hydraulic cylinder 1. An oil hole 4 is opened on the outer surface of the middle part of the piston plate 3. A return spring 14 is provided at the top of the piston plate 3. One end of the return spring 14 is disposed at the bottom of the fixing ring 15. The outer surface of the middle part of the fixing ring 15 is disposed in the inner wall of the middle part of the hydraulic cylinder 1. A first push plate 5 is provided at the other end of the push rod 2. A buffer spring 6 is provided at the top of the first push plate 5. One end of the buffer spring 6 is disposed at the bottom of the second push plate 7. A second impact cone 8 is provided at the top of the second push plate 7. A first impact cone 9 is provided at the top of the first push plate 5. There are four first impact cones 9 arranged in a ring array on the top of the first push plate 5. There are four second impact cones 8 arranged in a ring array on the top of the second push plate 7. The first impact cones 9 and the second impact cones 8 are made of rubber.
[0034] Please see Figure 2 and Figure 3 The bottom of the second push plate 7 is provided with a buffer pad 10, and the number and position of the buffer pad 10 correspond to the number and position of the first impact cone 9.
[0035] The above scheme reduces the impact force when the second push plate 7 moves toward the first push plate 5 by using the first impact cone 9 in conjunction with the buffer pad 10, and also reduces the noise when the second push plate 7 moves toward the first push plate 5 by using the first impact cone 9 in conjunction with the buffer pad 10.
[0036] Please see Figure 1 and Figure 2 The bottom of the second push plate 7 is provided with a limiting rod 11, and the outer surface of the middle part of the limiting rod 11 is slidably disposed in the inner wall of the middle part of the first push plate 5.
[0037] The above scheme can limit the angle of the second push plate 7 when it moves by setting the limit rod 11, thereby improving the stability of the second push plate 7 when it moves.
[0038] Please see Figure 3 , Figure 4 and Figure 6 An adjusting plate 16 is slidably provided at the bottom of the piston plate 3, and the number and position of the adjusting plates 16 correspond to the number and position of the oil holes 4.
[0039] Through the above scheme, the size of the oil hole 4 can be adjusted by setting the adjustment plate 16, thereby adjusting the speed at which the piston plate 3 moves in the hydraulic cylinder 1.
[0040] Please see Figure 3 , Figure 4 and Figure 6 A sliding rod 22 is provided at the bottom of the piston plate 3, and a sliding sleeve 23 is slidably provided on the outer surface of the middle part of the sliding rod 22. The top of the sliding sleeve 23 is set at the bottom of the adjusting plate 16 through a fixing rod.
[0041] By means of the above scheme, the movement trajectory of the adjusting plate 16 can be restricted by the sliding of the inner wall of the middle part of the sliding sleeve 23 on the outer surface of the middle part of the sliding rod 22, thereby improving the stability of the adjusting plate 16 when it moves and ensuring that the adjusting plate 16 can always be in contact with the bottom of the piston plate 3.
[0042] Please see Figure 3 and Figure 4 The bottom of the adjusting plate 16 is provided with a telescopic inner rod 17. One end of the telescopic inner rod 17 is inserted into the inner wall of one end of the telescopic outer tube 18. The other end of the telescopic outer tube 18 is provided at the top of the connecting plate 19. The bottom of the connecting plate 19 is provided with a rotating plate 20 through a fixing rod.
[0043] With the above scheme, rotating the rotating plate 20 can cause the connecting plate 19 to move the adjusting plate 16 through the telescopic inner rod 17 and the telescopic outer tube 18. When the piston plate 3 moves in position through the telescopic inner rod 17 and the telescopic outer tube 18, the connecting plate 19 can still move the adjusting plate 16.
[0044] Please see Figure 3 and Figure 4Two limiting rings 21 are provided on the inner wall of the middle part of the hydraulic cylinder 1. The two limiting rings 21 are located on the upper and lower sides of the connecting plate 19 respectively. The outer surface of the middle part of the connecting plate 19 is slidably connected to the outer surface of one side of the limiting ring 21.
[0045] The above scheme uses two limiting rings 21 to fix the position of the connecting plate 19 and improve the stability of the connecting plate 19 when it rotates.
[0046] Please see Figure 1 , Figure 2 and Figure 5 The bottom of the first push plate 5 is provided with a connecting ring 12 via a fixing rod. A buffer sleeve 13 is provided on the inner wall of the middle part of the connecting ring 12. The inner wall of the middle part of the buffer sleeve 13 is slidably connected to the outer surface of the middle part of the limiting rod 11. The buffer sleeve 13 is made of anti-slip rubber material and is funnel-shaped.
[0047] The above solution reduces the speed of the limit rod 11 when it resets by setting the buffer sleeve 13, thereby reducing the speed of the buffer spring 6 moving the second push plate 7, and preventing the buffer spring 6 from moving the second push plate 7 too fast, which would cause resonance noise.
[0048] In this embodiment, a low-noise hydraulic damping buffer reduces the contact area between a single second impact cone 8 and the impacting workpiece by adjusting the number of second impact cones 8, thereby reducing the noise generated during impact. At the same time, the buffer spring 6 reduces the impact force on the second impact cone 8 during impact and further reduces the noise generated during impact. This achieves the effects of reducing the noise generated when the impact head is impacted, reducing the noise of the working environment, mitigating the impact force on the impact head, and improving the service life of the impact head.
[0049] The working principle of the above embodiment is as follows: When the impacting workpiece hits the second impact cone 8, it pushes the second push plate 7 to move towards the first push plate 5. The movement of the second push plate 7 compresses the buffer spring 6, which reduces the impact force when the second push plate 7 moves towards the first push plate 5. When the second push plate 7 moves, the buffer pad 10 hits the first impact cone 9, causing the second push plate 7 to move the first push plate 5 through the buffer pad 10 and the first impact cone 9. This causes the first push plate 5 to move the piston plate 3 within the hydraulic cylinder 1 via the push rod 2. The piston plate 3 stretches the return spring 14, and the movement of the piston plate 3 causes damping oil to pass through the oil hole 4. When the second push plate 7 moves, it causes the limiting rod 11 to slide within the inner wall of the middle part of the first push plate 5. At the same time, the outer surface of the middle part of the limiting rod 11 will slide against the buffer sleeve 1. 3. The piston plate 3 slides within the inner wall of the middle section. After the impact of the impacting workpiece ends and it separates from the second impact cone 8, the return spring 14 drives the piston plate 3 to gradually return to its original position. At the same time, the buffer spring 6 pushes the second push plate 7 to return to its original position, causing the second push plate 7 to gradually move away from the first push plate 5. When the second push plate 7 returns to its original position, it will cause the outer surface of the middle section of the limit rod 11 to slide on the inner wall of the middle section of the buffer sleeve 13. The shape and material of the buffer sleeve 13 will slow down the movement speed of the limit rod 11, thereby slowing down the return speed of the second push plate 7. When it is necessary to adjust the buffering force of the hydraulic damping buffer, the rotating plate 20 is rotated, which drives the connecting plate 19 to rotate. The connecting plate 19, through the telescopic outer tube 18 and the telescopic inner rod 17, drives the adjusting plate 16 to slide at the bottom of the piston plate 3, so that the adjusting plate 16 blocks the oil hole 4 and adjusts the size of the oil hole 4.
[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0051] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A low-noise hydraulic damping buffer, comprising a hydraulic cylinder (1), characterized in that: A push rod (2) is sleeved on the inner wall of one end of the hydraulic cylinder (1). A piston plate (3) is provided on one end of the push rod (2). The piston plate (3) is slidably disposed in the inner wall of the middle part of the hydraulic cylinder (1). An oil hole (4) is opened on the outer surface of the middle part of the piston plate (3). A return spring (14) is provided on the top of the piston plate (3). One end of the return spring (14) is disposed at the bottom of the fixing ring (15). The outer surface of the middle part of the fixing ring (15) is disposed in the inner wall of the middle part of the hydraulic cylinder (1). A first push plate (5) is provided on the other end of the push rod (2). A buffer is provided on the top of the first push plate (5). Spring (6), one end of the buffer spring (6) is set at the bottom of the second push plate (7), the second push plate (7) is set at the top of the second impact cone (8), the first push plate (5) is set at the top of the first impact cone (9), the number of the first impact cone (9) is four, the four first impact cones (9) are arranged in a ring array on the top of the first push plate (5), the number of the second impact cone (8) is four, the four second impact cones (8) are arranged in a ring array on the top of the second push plate (7), the first impact cone (9) and the second impact cone (8) are made of rubber.
2. The low-noise hydraulic damping buffer according to claim 1, characterized in that: The bottom of the second push plate (7) is provided with a buffer pad (10), the number and position of the buffer pad (10) correspond to the number and position of the first impact cone (9).
3. The low-noise hydraulic damping buffer according to claim 1, characterized in that: The bottom of the second push plate (7) is provided with a limiting rod (11), and the outer surface of the middle part of the limiting rod (11) is slidably disposed in the inner wall of the middle part of the first push plate (5).
4. The low-noise hydraulic damping buffer according to claim 1, characterized in that: The piston plate (3) is slidably provided with an adjustment plate (16) at the bottom, and the number and position of the adjustment plate (16) correspond to the number and position of the oil holes (4).
5. The low-noise hydraulic damping buffer according to claim 1, characterized in that: The piston plate (3) is provided with a slide rod (22) at the bottom, and a slide sleeve (23) is slidably provided on the outer surface of the middle part of the slide rod (22). The top of the slide sleeve (23) is provided at the bottom of the adjusting plate (16) by a fixing rod.
6. A low-noise hydraulic damping buffer according to claim 5, characterized in that: The bottom of the adjusting plate (16) is provided with a telescopic inner rod (17). One end of the telescopic inner rod (17) is inserted into the inner wall of one end of the telescopic outer tube (18). The other end of the telescopic outer tube (18) is provided at the top of the connecting plate (19). The bottom of the connecting plate (19) is provided with a rotating plate (20) through a fixing rod.
7. The low-noise hydraulic damping buffer according to claim 1, characterized in that: The hydraulic cylinder (1) has two limiting rings (21) on its inner wall. The two limiting rings (21) are located on the upper and lower sides of the connecting plate (19) respectively. The outer surface of the middle part of the connecting plate (19) is slidably connected to the outer surface of one side of the limiting ring (21).
8. The low-noise hydraulic damping buffer according to claim 1, characterized in that: The bottom of the first push plate (5) is provided with a connecting ring (12) through a fixing rod. The inner wall of the middle part of the connecting ring (12) is provided with a buffer sleeve (13). The inner wall of the middle part of the buffer sleeve (13) is slidably connected to the outer surface of the middle part of the limiting rod (11). The buffer sleeve (13) is made of anti-slip rubber material and is funnel-shaped.