Buffer device
By using a multi-stage buffer adjustment device that combines mechanical and fluid buffering mechanisms, the problem of existing buffers being unable to effectively absorb shocks under high loads is solved, thus achieving safety protection for equipment and personnel.
Patent Information
- Application Number
- CN202520736669.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-04-17
AI Technical Summary
Existing buffers are unable to effectively absorb shocks when overloaded, leading to damage to equipment or personnel.
The buffer device employs multi-stage buffer adjustment, combining mechanical and fluid buffering mechanisms. Through the design of buffer springs, cylinders, and pistons, it achieves multi-stage energy dissipation, including mechanical buffering, fluid compression, and flow buffering.
It effectively absorbs impact energy, protects equipment and personnel, reduces space occupation, adapts to different working conditions, and improves safety and stability.
Smart Images
Figure CN223794562U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of mechanical device technology, and specifically relates to buffer devices. Background Technology
[0002] During the lifting and lowering process of mechanical equipment, buffers are required for safety protection. If the equipment falls from the air, the buffers can cushion the impact and prevent damage to the equipment or personnel. Existing buffers are mostly single-structured, such as mechanical springs or hydraulic buffers. When the load is too heavy, single-structure buffers cannot effectively absorb the impact, which can easily lead to damage to the equipment or personnel. Utility Model Content
[0003] In view of at least one of the above-mentioned defects or deficiencies in the prior art, this application provides a buffer device that can realize multi-level buffer adjustment, effectively absorb the impact force during mechanical collision, and improve the safety of personnel and equipment.
[0004] To achieve the above objectives, this application provides a buffer device, the buffer device comprising:
[0005] Base;
[0006] A first buffer mechanism includes a first cylinder, a piston rod, and a buffer spring. The first cylinder is mounted on the base. The top end of the piston rod is the pressure-bearing end, and its bottom end is inserted into the first cylinder. The buffer spring is sleeved on the piston rod and presses against the top of the first cylinder and the top of the piston rod.
[0007] The second buffer mechanism includes a second cylinder and a piston. The second cylinder is disposed on the base, and the piston is disposed inside the second cylinder and divides the cylinder cavity of the second cylinder into a buffer cavity and a closed cavity. The buffer cavity communicates with the rodless cavity of the first cylinder.
[0008] In some embodiments, the rodless cavity is filled with a buffer solution that is capable of flowing between the rodless cavity and the buffer cavity.
[0009] In some embodiments, the first cylinder is provided with an injection port communicating with the rodless chamber and a first sealing cap detachably disposed on the injection port.
[0010] In some embodiments, the enclosed cavity is filled with compressed gas.
[0011] In some embodiments, the second cylinder is provided with an air injection port communicating with the enclosed cavity and a second sealing cap detachably disposed on the air injection port.
[0012] In some embodiments, the second cylinder is further provided with a connection port that communicates with the enclosed cavity and is used for connection with a pressure gauge.
[0013] In some embodiments, a pressure plate is provided at the top of the piston rod, and the buffer spring is pressed between the top of the first cylinder and the pressure plate.
[0014] In some embodiments, the top surface of the pressure plate is a pressure surface and is provided with cushioning rubber.
[0015] In some embodiments, the buffer device further includes a connecting rod, the two ends of which are respectively connected to the first cylinder and the second cylinder and communicate with the rodless cavity and the buffer cavity.
[0016] In some embodiments, the base is provided with a plurality of mounting holes, and the buffer device includes a plurality of connecting members for passing through the plurality of mounting holes respectively.
[0017] Through the above technical solution, the first buffer mechanism can quickly absorb the instantaneous impact energy received by the piston rod through the buffer spring, thus playing the role of first-stage mechanical buffering. Through the connection design between the rodless chamber of the first cylinder and the buffer chamber of the second cylinder, the compression or flow of the fluid medium in the rodless chamber further absorbs the impact energy and disperses pressure fluctuations, thus playing the role of second-stage fluid buffering. By introducing the fluid medium into the buffer chamber of the second cylinder, the piston is pushed to compress the medium in the closed chamber, allowing the medium in the closed chamber to further absorb the impact energy, thus playing the role of third-stage fluid buffering. Therefore, the buffer device of this application, through the coordinated operation of the first and second buffer mechanisms, forms a dual energy dissipation path of mechanical and fluid, achieving multi-stage buffering adjustment when subjected to high-load impacts such as equipment drops, effectively protecting the safety of equipment and personnel.
[0018] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:
[0020] Figure 1 This is a schematic diagram of a buffer device according to a specific embodiment of this application.
[0021] Explanation of reference numerals in the attached figures
[0022] 1. Base 2. First cylinder
[0023] 3 Piston rod 4 Buffer spring
[0024] 5 Second cylinder barrel 6 Piston
[0025] 7 Connecting rod 101 Mounting hole
[0026] 201 Rodless cavity 202 First sealing cover
[0027] 301 Pressure plate 501 Buffer chamber
[0028] 502 Enclosed cavity; 503 Second sealing cover
[0029] 504 connector Detailed Implementation
[0030] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0031] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.
[0032] like Figure 1 As shown, an exemplary embodiment of this application provides a buffer device, which includes a base 1, a first buffer mechanism, and a second buffer mechanism. The first buffer mechanism includes a first cylinder 2, a piston rod 3, and a buffer spring 4. The first cylinder 2 is mounted on the base 1. The top end of the piston rod 3 is the pressure end, and its bottom end is inserted into the first cylinder 2. The buffer spring 4 is sleeved outside the piston rod 3 and pressed between the top of the first cylinder 2 and the top of the piston rod 3. The second buffer mechanism includes a second cylinder 5 and a piston 6. The second cylinder 5 is mounted on the base 1. The piston 6 is disposed inside the second cylinder 5 and divides the cavity of the second cylinder 5 into a buffer cavity 501 and a closed cavity 502. The buffer cavity 501 communicates with the rodless cavity 201 of the first cylinder 2.
[0033] It is understandable that both the rodless cavity 201 and the closed cavity 502 are usually provided with a fluid medium, such as a liquid or gas, which achieves energy absorption or transfer through flow or compression.
[0034] Therefore, when the piston rod 3 is impacted, such as when a large piece of equipment falls and presses on the pressure end of the piston rod 3, the first buffer mechanism can quickly absorb the instantaneous impact energy of the piston rod 3 through the buffer spring 4, thus playing the role of the first stage of mechanical buffering. Through the connection design between the rodless chamber 201 of the first cylinder 2 and the buffer chamber 501 of the second cylinder 5, the compression or flow of the fluid medium in the rodless chamber 201 is used to further absorb the impact energy and disperse pressure fluctuations, thus playing the role of the second stage of fluid buffering. By introducing the fluid medium into the buffer chamber 501 of the second cylinder 5, the piston 6 is pushed to further compress the fluid medium in the closed chamber 502, so that the fluid medium in the closed chamber 502 further absorbs the impact energy, thus playing the role of the third stage of fluid buffering. It can be seen that the buffer device of this exemplary embodiment forms a dual energy dissipation path of mechanical and fluid through the linkage of the first buffer mechanism and the second buffer mechanism. When subjected to high-load impacts such as equipment falling, it can realize multi-stage buffer adjustment, effectively protecting the safety of equipment and personnel.
[0035] Meanwhile, the first buffer mechanism and the second buffer mechanism are jointly arranged on the base 1, which makes the buffer device of this exemplary embodiment highly integrated and reduces space occupation.
[0036] Furthermore, multiple pistons 6 can also be installed inside the second cylinder 5, thereby dividing the cylinder cavity of the second cylinder 5 into multiple partition chambers to achieve multi-stage pressure gradient buffering.
[0037] In an optional or preferred embodiment, the rodless cavity 201 is filled with a buffer solution that can flow between the rodless cavity 201 and the buffer cavity 501. Specifically, when the piston rod 3 is pressed and pushed into the rodless cavity 201, the buffer solution flows from the rodless cavity 201 to the buffer cavity 501. Its flow rate is correlated with the moving speed of the piston rod 3, thus forming an adaptive damping adjustment of the piston rod 3. That is, the greater the impact force on the piston rod 3 and the faster its moving speed, the faster the flow rate of the buffer solution, thereby achieving rapid energy absorption, significantly reducing the peak impact force, and achieving dynamic pressure balance. Furthermore, the buffer solution possesses liquid viscous resistance and a throttling effect, enabling it to convert kinetic energy into heat energy, thereby reducing the rigid impact on the piston rod 3.
[0038] In other embodiments, a buffer gas can be filled in the rodless cavity 201. The buffer gas can absorb energy through its own compression and can also flow from the rodless cavity 201 to the buffer cavity 501 to achieve energy dissipation and energy conduction, thereby achieving a buffering effect of dual energy dissipation.
[0039] Reference Figure 1The first cylinder 2 is provided with an injection port communicating with the rodless chamber 201 and a first sealing cap 202 detachably disposed on the injection port. Buffer solution can be added to or replaced into the rodless chamber 201 through the injection port to meet the buffering requirements of different operating conditions. The first sealing cap 202 seals the injection port, preventing buffer solution leakage and ensuring the long-term stability of the buffer device. Preferably, the first sealing cap 202 can adopt a quick-release connection structure, thereby supporting tool-free assembly and disassembly.
[0040] In an optional or preferred embodiment, the sealed cavity 502 is filled with compressed gas. During impact, the compressed gas is further compressed to store energy, and after the impact, the gas expands to provide a reverse damping force, thereby suppressing the rebound of the piston rod 3.
[0041] Of course, in some embodiments, the closed cavity 502 may be filled with buffer solution. Accordingly, the closed cavity 502 should be provided with a pressure relief hole so that the buffer solution can flow out of the closed cavity 502 through the pressure relief hole when it is further compressed, thereby absorbing energy and buffering.
[0042] Reference Figure 1 The second cylinder 5 is equipped with an injection port communicating with the sealed cavity 502 and a second sealing cover 503 detachably installed on the injection port. Compressed gas can be supplied to or released into the sealed cavity 502 through the injection port, thereby adjusting the gas pressure in the sealed cavity 502 to adapt to the buffering requirements of different loads, such as high pressure for heavy loads and low pressure for light loads. Simultaneously, by changing different types of compressed gas, such as air or nitrogen, through the injection port, it can adapt to different external environments, such as extreme temperatures or corrosive environments.
[0043] Similarly, the second sealing cap 503 seals the air injection hole, preventing gas leakage and ensuring the long-term stability of the buffer device. Preferably, the second sealing cap 503 can adopt a quick-release connection structure, thereby supporting tool-free disassembly and assembly.
[0044] In an optional or preferred embodiment, such as Figure 1 As shown, the second cylinder 5 is also provided with a connection port 504 that communicates with the enclosed cavity 502 and is used to connect to a pressure gauge. By connecting the pressure gauge through the connection port 504, the air pressure in the enclosed cavity 502 can be monitored in real time. On the one hand, when injecting gas into the enclosed cavity 502, the air pressure can be precisely adjusted to the pressure value required for buffering by observing the pressure gauge. On the other hand, during daily use, monitoring the air pressure can prevent pressure abnormalities caused by gas leakage, overheating, or overload, thus ensuring equipment safety.
[0045] In an optional or preferred embodiment, such as Figure 1As shown, a pressure plate 301 is provided at the top of the piston rod 3. The top surface of the pressure plate 301 is the pressure-bearing surface, which increases the end face area of the piston rod 3. In other words, the force-bearing area is increased, which can achieve uniform force on the piston rod 3 and avoid deformation or breakage caused by local stress concentration. The buffer spring 4 is pressed between the top of the first cylinder 2 and the pressure plate 301. Similarly, the pressure plate 301 can disperse the elastic force of the buffer spring 4, so that the piston rod 3 is subjected to uniform force, and the buffer spring 4 can fully contact the pressure plate 301 to reduce local stress concentration.
[0046] It is understandable that by adjusting the initial distance between the pressure plate 301 and the first cylinder 2, the preload of the buffer spring 4 can be set to adapt to the buffering requirements of different impact energies. For example, high-pressure gas can be injected into the rod chamber of the first cylinder 2 to push the piston rod 3 towards the rodless chamber 201, thereby reducing the initial distance between the pressure plate 301 and the first cylinder 2. Correspondingly, when it is necessary to increase the initial distance between the pressure plate 301 and the first cylinder 2, the high-pressure gas in the rod chamber can be released to move the piston rod 3 towards the rod chamber. This application does not limit the method of adjusting the piston rod 3.
[0047] In an optional or preferred embodiment, the top surface of the pressure plate 301 is a pressure-bearing surface and is provided with cushioning rubber. On the one hand, the cushioning rubber can absorb the high-frequency vibration and noise of the mechanical impact, protecting the surface of the cushioned object and preventing its surface damage; on the other hand, the cushioning rubber can increase the coefficient of friction and prevent the cushioned object from sliding. Of course, this application is not limited to rubber as the cushioning material; other cushioning materials such as polyurethane and silicone can also be used as the cushioning material layer of the pressure plate 301.
[0048] In an optional or preferred embodiment, such as Figure 1 As shown, the buffer device also includes a connecting rod 7, whose two ends are connected to the first cylinder 2 and the second cylinder 5 respectively, and connect the rodless chamber 201 and the buffer chamber 501. Thus, the rigid connection between the first cylinder 2 and the second cylinder 5 via the connecting rod 7 improves the stability of the device and prevents pipe loosening or leakage caused by vibration. Furthermore, the connecting rod 7, as an internal flow channel, reduces the flow resistance of the buffer solution and improves the buffer response speed of the device.
[0049] In an optional or preferred embodiment, such as Figure 1As shown, the base 1 has multiple mounting holes 101, and the buffer device includes multiple connecting members for connecting the multiple mounting holes 101 respectively. The multiple mounting holes 101 can support the horizontal, vertical or inclined installation of the base 1, adapting to different equipment layouts, while also distributing the force on the installation points to prevent deformation of the base 1 due to single-point overload. The base 1 can be quickly assembled and disassembled through the connecting members, enabling the buffer device of this application to achieve modular quick assembly and disassembly, supporting integration with other safety mechanisms (such as limit switches), and allowing the installation position to be adjusted according to actual conditions, or supporting the combination of multiple buffer devices for multi-directional pressure buffer protection.
[0050] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0053] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A damping device, characterized in that The buffer device comprises: a base (1); a first buffer mechanism comprising a first cylinder (2), a piston rod (3) and a buffer spring (4), the first cylinder (2) being arranged on the base (1), the piston rod (3) having a pressure receiving end and being inserted into the first cylinder (2) at the bottom, and the buffer spring (4) being sleeved on the piston rod (3) and being pressed between the top of the first cylinder (2) and the top of the piston rod (3); and a second buffer mechanism comprising a second cylinder (5) and a piston (6), the second cylinder (5) being arranged on the base (1), and the piston (6) being arranged in the second cylinder (5) and separating the cylinder cavity of the second cylinder (5) into a buffer cavity (501) and a closed cavity (502), the buffer cavity (501) being in communication with the rodless cavity (201) of the first cylinder (2).
2. The cushioning device of claim 1, wherein, The rodless cavity (201) is filled with a buffer solution, and the buffer solution can flow between the rodless cavity (201) and the buffer cavity (501).
3. The cushioning device of claim 2, wherein, The first cylinder (2) is provided with a liquid injection hole in communication with the rodless cavity (201) and a first sealing cover (202) arranged detachably on the liquid injection hole.
4. The cushioning device of claim 1, wherein, The closed cavity (502) is filled with compressed gas.
5. The cushioning device of claim 4, wherein, The second cylinder (5) is provided with a gas injection hole in communication with the closed cavity (502) and a second sealing cover (503) arranged detachably on the gas injection hole.
6. The cushioning device of claim 4, wherein, The second cylinder (5) is further provided with a connecting port (504) in communication with the closed cavity (502) and used for connecting with a pressure gauge.
7. The cushioning device of claim 1, wherein, The top end of the piston rod (3) is provided with a pressure receiving plate (301), and the buffer spring (4) is pressed between the top of the first cylinder (2) and the pressure receiving plate (301).
8. The cushioning device of claim 7, wherein, The top surface of the pressure receiving plate (301) is a pressure receiving surface and is provided with a buffer rubber.
9. The cushioning device of claim 1, wherein, The buffer device further comprises a communication rod (7), and the two ends of the communication rod (7) are connected with the first cylinder (2) and the second cylinder (5) respectively and communicate the rodless cavity (201) and the buffer cavity (501).
10. The cushioning device of any one of claims 1 to 9, wherein, The base (1) is provided with a plurality of mounting holes (101), and the buffer device comprises a plurality of penetrating members for penetrating the plurality of mounting holes (101) respectively.