Telescopic anti-falling structure of liquid-gas composite buffer device

Abstract

The utility model provides a telescopic anti-falling structure of a liquid-gas composite buffering device, which comprises a supporting component, a hydraulic buffering component, a flow adjusting component, an elastic energy absorbing component, a sealing component and an oil pressure monitoring component. When oil passes through the gap, damping force can be generated, the damping force is controlled by replacing the flow limiting plates with different diameters and adjusting the damping gap, the buffering energy absorption range of the buffering device is controlled, the use range of the buffering device is widened, and two sealing rings are further arranged at the position of the piston head, so that the sealing effect is improved. When one sealing ring fails, the other sealing ring can still conduct sealing independently, oil leakage is effectively prevented, the service life of the buffering device is prolonged, and normal work of the buffering device is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of composite buffer devices, and in particular to a telescopic anti-fall structure for a liquid-gas composite buffer device. Background Technology

[0002] Patent document CN220432082U discloses a buffer device for a crane, comprising: a guide rail, with its left and right ends respectively fixed to the top of the opposite sides of a support column, and a crane trolley mounted on the guide rail; a pair of mounting plates, detachably mounted on the top of the support column, with a socket seat fixedly fitted inside, the socket seat having an internal air pressure chamber, and air chambers respectively provided on the upper and lower sides of the mounting plates, the air pressure chambers being connected, and a piston being movably fitted inside the air pressure chamber; and a pair of movable sleeves, respectively movably fitted onto the opposite ends of the two socket seats, and connected and fixed to the socket seats by an elastic telescopic structure, and with a buffer plate fixed thereon, the buffer plate being connected to the piston. The advantages compared to the prior art are: by providing an air pressure chamber, this new invention can further buffer the impact force by using air pressure on top of the spring buffering, thus preventing the spring from being subjected to the full impact force and extending its service life.

[0003] However, this buffer device uses springs and a pneumatic chamber for cushioning, and the excessive rigidity of the pneumatic chamber under load can easily damage the buffer device. Therefore, it is necessary to improve this structure to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this invention is to provide a telescopic anti-fall structure for a liquid-gas composite buffer device to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A liquid-gas composite buffer device telescopic fall prevention structure includes:

[0007] A supporting component, which has an assembly space;

[0008] A hydraulic buffer component is disposed in the support component, and the hydraulic buffer component buffers the buffer device.

[0009] A flow regulating component is disposed in the support component and controls the flow rate of hydraulic oil.

[0010] An elastic energy-absorbing component is disposed in the support component and absorbs the impact force.

[0011] A sealing component is connected to a hydraulic buffer component, and the sealing component seals the hydraulic buffer component.

[0012] The present invention is further configured such that the supporting component includes:

[0013] An outer telescopic cylinder liner, which is circular in shape, has an inner concave circular groove and a receiving space in the inner concave circular groove.

[0014] An inner telescopic cylinder liner is provided in the concave circular groove of the outer telescopic cylinder liner. The shape of the inner telescopic cylinder liner is adapted to the concave circular groove. A limit plate is provided in the inner telescopic cylinder liner. A flow guide groove is provided in the inner telescopic cylinder liner. An oil storage chamber is provided in the inner telescopic cylinder liner.

[0015] The present invention is further configured such that the hydraulic buffer component includes:

[0016] The cylinder body has one end connected to the inner side of the outer telescopic cylinder sleeve. The cylinder body is sleeved on the inner telescopic cylinder sleeve. The cylinder body has an oil cavity with a receiving space. A connecting groove is provided on one side of the cylinder body.

[0017] The piston rod has one side set in the connecting groove of the cylinder body and the other side extending into the inner telescopic cylinder liner.

[0018] A piston head is fitted onto one side of the piston rod. A sealing cavity is provided on the surface of the piston head, and a receiving space is provided in the sealing cavity.

[0019] The present invention is further configured such that the flow regulating component includes:

[0020] A flow restrictor is provided in the flow guide groove of the inner telescopic cylinder liner. The diameter of the flow restrictor is smaller than that of the flow guide groove, so that it cooperates with the flow guide groove to form a damping gap.

[0021] The present invention is further configured such that the elastic energy-absorbing component includes:

[0022] An elastic filler, one end of which abuts against the outer telescopic cylinder liner, and the other end of which abuts against the limiting plate of the inner telescopic cylinder liner;

[0023] A spring, which is disposed in the filler, is used to reset the inner telescopic cylinder liner.

[0024] The present invention is further configured such that the sealing component includes:

[0025] A pair of sealing rings are provided and are located in the sealing cavity of the piston head to seal the piston head.

[0026] The present invention is further configured such that the oil pressure monitoring component includes:

[0027] An oil pressure measuring device is installed inside the oil cylinder to monitor the oil pressure inside the cylinder in real time.

[0028] The advantages of this utility model are:

[0029] 1. This utility model consists of a telescopic anti-fall structure formed by the coordinated work of a support component, a hydraulic buffer component, and an elastic energy-absorbing component. When the support component is subjected to the impact force of a falling crane, the two components simultaneously buffer and absorb the impact kinetic energy, greatly increasing the load-bearing capacity of the buffer device. The use of a hydraulic buffer component effectively avoids the situation where the pneumatic buffer is too rigid and thus damages the buffer device. At the same time, after the impact, the elastic filler and spring release the elastic potential energy absorbed inside to drive the inner telescopic cylinder to reset, without the need for manual adjustment to reset it, making the buffer device more reliable.

[0030] 2. This utility model, by setting a flow-limiting plate, creates a tiny gap between the flow-limiting plate and the guide groove of the inner telescopic cylinder liner. When the oil passes through this gap, a damping force is generated. By replacing the flow-limiting plate with a different diameter, the damping gap is adjusted to control the magnitude of the damping force, thereby controlling the buffering energy absorption range of the buffer device and increasing the application range of the buffer device.

[0031] 3. This utility model provides two sealing rings at the piston head. If one of them fails, the other sealing ring can still seal independently, effectively preventing oil leakage from the piston head, increasing the service life of the buffer device, and ensuring the normal operation of the device.

[0032] 4. This utility model uses an oil pressure measuring device to monitor the oil pressure inside the cylinder in real time. When hydraulic oil leaks, it can be replenished in time to prevent the loss of buffer function due to insufficient oil. When the pressure inside the cylinder is too high, the oil is released to prevent the oil pressure from affecting the life of the device. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the internal structure of the telescopic anti-fall structure of the liquid-gas composite buffer device proposed in this utility model.

[0034] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0035] Numerical designations: Outer telescopic cylinder liner 110, inner concave circular groove 111, inner telescopic cylinder liner 120, limiting plate 121, guide groove 122, oil reservoir 123, cylinder body 210, oil chamber 211, connecting groove 212, piston rod 220, piston head 230, sealing chamber 231, flow limiting plate 310, damping clearance 311, elastic filler 410, spring 420, sealing ring 510, oil pressure measuring device 610 Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0037] like Figure 1-2 As shown, this utility model proposes a telescopic anti-fall structure for a hydraulic-gas composite buffer device. This telescopic anti-fall structure includes a support component, a hydraulic buffer component, a flow regulating component, an elastic energy-absorbing component, a sealing component, and an oil pressure monitoring component. The support component has an assembly space. The hydraulic buffer component is disposed within the support component and buffers the buffer device. The flow regulating component is disposed within the support component and controls the flow rate of the hydraulic oil. The elastic energy-absorbing component is disposed within the support component and absorbs the impact force. The sealing component is connected to the hydraulic buffer component and seals the hydraulic buffer component.

[0038] In this embodiment, the support member includes an outer telescopic cylinder sleeve 110 and an inner telescopic cylinder sleeve 120. The outer telescopic cylinder sleeve is circular in shape and has a concave circular groove 111 with a receiving space. The inner telescopic cylinder sleeve is disposed in the concave circular groove of the outer telescopic cylinder sleeve and its shape is adapted to the concave circular groove. The inner telescopic cylinder sleeve has a limit plate 121, a flow guide groove 122, and an oil storage chamber 123.

[0039] In this embodiment, the hydraulic buffer component includes a cylinder body 210, a piston rod 220, and a piston head 230. One end of the cylinder body is connected to the inner side of the outer telescopic cylinder sleeve. The cylinder body is fitted onto the inner telescopic cylinder sleeve. An oil cavity 211 is provided in the cylinder body, and the oil cavity has a receiving space. A connecting groove 212 is provided on one side of the cylinder body. One side of the piston rod is located in the connecting groove of the cylinder body, and the other side of the piston rod extends into the inner telescopic cylinder sleeve. The piston head is fitted onto one side of the piston rod, and a sealing cavity 231 is provided on the surface of the piston head, and the sealing cavity has a receiving space.

[0040] In this embodiment, the flow regulating component includes a flow limiting plate 310, which is disposed in the flow guiding groove of the inner telescopic cylinder liner. The diameter of the flow limiting plate is smaller than that of the flow guiding groove, thereby forming a damping gap 311 with the flow guiding groove.

[0041] In this embodiment, the elastic energy-absorbing component includes an elastic filler 410 and a spring 420. One end of the elastic filler abuts against the outer telescopic cylinder sleeve, and the other end of the elastic filler abuts against the limiting plate of the inner telescopic cylinder sleeve. The spring is disposed in the filler and the inner telescopic cylinder sleeve is reset by the spring.

[0042] In this embodiment, the sealing component includes a pair of sealing rings 510. The sealing rings are disposed in the sealing cavity of the piston head and seal the piston head. By providing two sealing rings, the sealing performance of the piston head is greatly increased. At the same time, if one sealing ring is damaged, the other can continue to seal, ensuring the normal operation of the buffer device and increasing its service life.

[0043] In this embodiment, the oil pressure monitoring component includes an oil pressure measuring device 610, which is installed inside the oil cylinder. The oil pressure measuring device monitors the oil pressure inside the oil cylinder in real time. This oil pressure measuring device is existing technology and will not be described in detail here.

[0044] The working principle of this utility model is as follows:

[0045] When the inner telescopic cylinder liner is subjected to impact kinetic energy, it moves towards the outer telescopic cylinder liner. Under the action of the inner telescopic cylinder liner, the flow-limiting plate squeezes the oil cavity. At the same time, as the flow-limiting plate and the inner telescopic cylinder liner move, the oil reservoir expands, and the oil flows towards the oil reservoir along the damping gap. Due to the small damping gap, a damping force is generated during the flow. This damping force absorbs the impact kinetic energy from the inner telescopic cylinder liner. When the inner telescopic cylinder liner moves, it squeezes the elastic filler and spring through the limiting plate, generating a reaction force, thereby absorbing the impact kinetic energy from the inner telescopic cylinder liner. After the impact ends, the elastic filler and spring in the outer telescopic cylinder liner release the elastic potential energy absorbed inside, pushing the inner telescopic cylinder liner away from the outer telescopic cylinder liner, thus completing the reset action.

[0046] In the description of this utility model, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate orientation or positional relationships, they should be understood as being based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use, or the orientation or positional relationships commonly understood by those skilled in the art. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, when terms such as "first" and "second" appear, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "setting," and "connection" should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A telescopic anti-fall structure for a liquid-gas composite buffer device, characterized in that, include: A supporting component, which has an assembly space; A hydraulic buffer component is disposed in the support component, and the hydraulic buffer component buffers the buffer device. A flow regulating component is disposed in the support component and controls the flow rate of hydraulic oil. An elastic energy-absorbing component is disposed in the support component and absorbs the impact force. A sealing component, which is connected to the hydraulic buffer component, and seals the hydraulic buffer component; The hydraulic pressure monitoring component is installed in the hydraulic buffer component and monitors the hydraulic pressure inside the hydraulic buffer component.

2. The telescopic anti-fall structure of the liquid-gas composite buffer device according to claim 1, characterized in that, The supporting components include: An outer telescopic cylinder liner, which is circular in shape, has an inner concave circular groove and a receiving space in the inner concave circular groove. An inner telescopic cylinder liner is provided in the concave circular groove of the outer telescopic cylinder liner. The shape of the inner telescopic cylinder liner is adapted to the concave circular groove. A limit plate is provided in the inner telescopic cylinder liner. A flow guide groove is provided in the inner telescopic cylinder liner. An oil storage chamber is provided in the inner telescopic cylinder liner.

3. The telescopic anti-fall structure of the liquid-gas composite buffer device according to claim 2, characterized in that, The hydraulic buffer components include: The cylinder body has one end connected to the inner side of the outer telescopic cylinder sleeve. The cylinder body is sleeved on the inner telescopic cylinder sleeve. The cylinder body has an oil cavity with a receiving space. A connecting groove is provided on one side of the cylinder body. The piston rod has one side set in the connecting groove of the cylinder body and the other side extending into the inner telescopic cylinder liner. A piston head is fitted onto one side of the piston rod. A sealing cavity is provided on the surface of the piston head, and a receiving space is provided in the sealing cavity.

4. The telescopic anti-fall structure of the liquid-gas composite buffer device according to claim 2, characterized in that, Flow regulation components include: A flow restrictor is provided in the flow guide groove of the inner telescopic cylinder liner. The diameter of the flow restrictor is smaller than that of the flow guide groove, so that it cooperates with the flow guide groove to form a damping gap.

5. The telescopic anti-fall structure of the liquid-gas composite buffer device according to claim 2, characterized in that, The elastic energy-absorbing component includes: An elastic filler, one end of which abuts against the outer telescopic cylinder liner, and the other end of which abuts against the limiting plate of the inner telescopic cylinder liner; A spring, which is disposed in the filler, is used to reset the inner telescopic cylinder liner.

6. The telescopic anti-fall structure of the liquid-gas composite buffer device according to claim 3, characterized in that, The sealing components include: A pair of sealing rings are provided and are located in the sealing cavity of the piston head to seal the piston head.

7. The telescopic anti-fall structure of the liquid-gas composite buffer device according to claim 3, characterized in that, The hydraulic pressure monitoring components include: An oil pressure measuring device is installed inside the oil cylinder to monitor the oil pressure inside the cylinder in real time.

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