Hydraulic self-adaptive anti-slide pile retaining device
Through the hydraulic adaptive anti-sliding pile support device, the piston head movement speed is dynamically adjusted by using hydraulic buffering and limiting devices, which solves the problem of the traditional anchor cable anti-sliding pile easily breaking in earthquakes, and achieves stable support and low-cost maintenance.
Patent Information
- Application Number
- CN202510665999.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2025-07-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The fixed connection of the traditional anchor cable anti-sliding pile is prone to break in earthquake disasters, resulting in the failure of the anchor cable. The limiting device structure is unreasonable, the maintenance cost is high, and the flow rate of the piston head through hole cannot be adjusted, which affects the buffering effect.
The hydraulic adaptive anti-sliding pile support device is adopted, including hydraulic buffering and limiting devices, and the hydraulic cylinder, piston head, anchor clamp, check valve and trigger mechanism are used to provide prestress through the first elastic member, and the trigger mechanism adjusts the piston head movement speed to achieve dynamic buffering and energy consumption.
Under different vibration conditions, the device automatically adjusts the piston head movement speed to avoid the anchor cable breakage, reduce maintenance costs, achieve stable support and efficient energy absorption, and can be reset after the earthquake is over without changing parts.
Smart Images
Figure CN120291541A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of landslide prevention and control, and particularly to a hydraulic self-adaptive anti-slide pile retaining device. Background Art
[0002] An anchor cable anti-slide pile is a retaining structure used to control geological disasters such as landslides. It combines the advantages of anti-slide piles and anchor cables, has strong anti-slide ability and high stability. When the landslide body has a sliding tendency, the generated sliding force acts on the anti-slide pile. The anti-slide pile relies on its embedded effect in the stable stratum and the bending and shear strength of the pile body to resist part of the sliding force. At the same time, the anchor cable plays a role. Since prestress is applied to the anchor cable during the construction process, it will generate a reverse tension on the landslide body, and this tension is transmitted to the landslide body through the pile body, changing the stress state inside the landslide body, reducing the sliding force, and restricting the deformation of the landslide body. The combined action of the anchor cable tension and the resistance of the anti-slide pile keeps the landslide body in a stable state.
[0003] Currently, traditional anchor cable anti-slide piles fixedly connect the anchor cable and the anti-slide pile. This structure can be applied to most landslide bodies. However, when the landslide body suffers from earthquake disasters, the anchor cable is subjected to huge pressure. The fixedly connected anchor cable has no buffer space and will break when the instantaneous force is too large, resulting in the failure of the anchor cable. The broken anchor cable is difficult to repair.
[0004] Therefore, it is very necessary to set a buffer module between the anchor cable and the anti-slide pile. During the R & D process, the inventor searched and found that a kind of energy dissipation and shock absorption anchor cable anti-slide pile structure disclosed in the application number 2023108916496 includes a damping energy dissipation device and a limiting device. The damping energy dissipation device is arranged on the anti-slide pile through the anchor cable and the anchor pier; the damping energy dissipation device includes a damping outer shell, damping liquid, a piston head and a spring. The damping liquid is encapsulated inside the damping outer shell. The piston head is connected to the anchor cable and is slidably arranged on the inner wall of the damping outer shell. The piston head is provided with through holes for the damping liquid to flow through, and the spring is arranged on one side of the piston head to form an elastic structure. By setting the damping energy dissipation device and the limiting device, the buffer protection of the anchor cable is realized.
[0005] Although the above technical solution can protect the anchor cable to a certain extent, there are still multiple disadvantages that affect the specific implementation effect. Disadvantages: 1) The structure of the adopted limiting device is unreasonable. When the anchor cable is stressed to a certain extent, the control ring in the limiting device will be cracked, and the limiting device will lose its limiting function. After being damaged, it needs to be replaced and installed again, with high maintenance costs. 2) The flow rate of the through holes opened on the piston head for the damping liquid to flow through is fixed and cannot be adjusted according to the magnitude of the force on the anchor cable. When the landslide speed is too fast and the moving speed of the piston head is too slow, the excessive tension will still cause the anchor cable to break. The hydraulic self-adaptive anti-slide pile retaining device designed by the present inventor can provide buffer protection for the anchor cable while overcoming the above disadvantages. Summary of the Invention
[0006] The object of the present invention is to provide a hydraulic self - adaptive anti - slide pile retaining device to solve the problems proposed in the background technology. The specific technical solutions are as follows:
[0007] To achieve the above object and other related objects, the present invention provides a hydraulic self - adaptive anti - slide pile retaining device, which includes an anti - slide pile, a hydraulic buffer and limit device arranged on the anti - slide pile, and a cable anchor arranged on the hydraulic buffer and limit device. The cable anchor penetrates through the anti - slide pile. Among them,
[0008] The hydraulic buffer and limit device includes a hydraulic cylinder, a piston head, an anchor clip, a fixed anchor, a first elastic member, a one - way valve, and a trigger mechanism;
[0009] The piston head is slidably connected to the inner wall of the hydraulic cylinder. There is a damping medium in the hydraulic cylinder. A one - way valve is arranged on the side of the piston head facing the anchor ring, and a through - hole for the damping medium to pass through is opened on the piston head. One end of the through - hole communicates with the one - way valve, and the other end communicates with the side of the piston head away from the fixed anchor. The anchor clip is used for clamping the cable anchor. The anchor clip is arranged in the fixed anchor, and the cable anchor is fixed through the cooperation of the anchor clip and the fixed anchor. A first elastic member is arranged between the fixed anchor and the piston head, and a trigger mechanism is arranged on the side of the fixed anchor close to the piston head. The trigger mechanism is used to open the one - way valve when the fixed anchor approaches the piston head.
[0010] Preferably, the one - way valve is a spherical one - way valve, and the trigger mechanism is a thimble. The thimble is used to push against the ball core of the spherical one - way valve to open the spherical one - way valve.
[0011] Preferably, the number of thimbles is the same as the number of spherical one - way valves and is at least two groups. The lengths of the multiple thimbles are different so that the fixed anchor drives the thimbles to push against in sequence.
[0012] Preferably, an auxiliary fixing module is arranged on the piston head. The auxiliary fixing module includes a limiting rod, a support plate and a first spring. The limiting rod is arranged on the piston head, a support plate is arranged at the end of the limiting rod, and a first spring is arranged between the support plate and the anchor clip.
[0013] Preferably, a plurality of grooves are opened on the outer periphery of the fixed anchor. Wedge - shaped sliders are arranged in the grooves. The wedge - shaped sliders are connected to the bottom of the grooves through second springs. Corresponding sliding grooves are opened on the inner wall of the hydraulic cylinder.
[0014] Preferably, a second elastic member is arranged between the fixed anchor and the one - way valve.
[0015] Preferably, a guiding hole is formed in the fixed anchor, and the limiting rod slidably penetrates through the guiding hole.
[0016] Preferably, a sleeve rod is arranged on the piston head, the sleeve rod is sleeved on the cable anchor, and a slideway for the sleeve rod to pass through is formed in the center of the fixed anchor.
[0017] The hydraulic self-adaptive anti-slide pile retaining device provided by the present invention has the following beneficial effects:
[0018] 1. By arranging the one-way valve, the piston head cannot be affected by the tensile force and move, so as to form a stable support. The first elastic member provides the prestress of the cable anchor. In the state of small earthquakes, the energy is absorbed through the compression deformation of the first elastic member, and the spherical one-way valve will not be triggered, and the piston head is in the supporting state. In the state of medium earthquakes, the first elastic member can no longer bear the tension of the cable anchor and undergoes a large amount of compression. At this time, the fixed anchor drives the ejector pin to push the ball core into the spherical one-way valve, so that the through hole communicates with both sides of the piston head, and the damping liquid flows through the through hole, and the piston head slowly moves to achieve energy dissipation. After the earthquake ends, through an external hydraulic device, the cable anchor is directly pulled out slowly, the piston head can be reset, and the first elastic member is restored, so that it can be used again without replacing spare parts, and the maintenance cost is low.
[0019] 2. By arranging ejector pins with different lengths to trigger the one-way valve, the adjustment of the moving speed of the piston head with different degrees of compression of the first elastic member is realized. The greater the landslide energy, the greater the moving speed of the piston head, thus avoiding the problem that the cable anchor breaks when the landslide speed is too fast. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0021] Figure 1 is a schematic structural diagram of the hydraulic self-adaptive anti-slide pile retaining device described in the present invention;
[0022] Figure 2 is a schematic internal structure diagram of the hydraulic buffer and limiting device described in the present invention;
[0023] Figure 3 is a cross-sectional view of the hydraulic buffer and limiting device after removing the hydraulic cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The following further elaborates on the hydraulic self - adapting anti - slide pile retaining device proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non - precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.
[0025] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or
[0026] implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0027] It should be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present invention. Thus,
[0028] the illustrations only show the components related to the present invention, rather than being drawn according to the number, shape, and size of the components in actual implementation. The states, quantities, and proportions of the components in actual implementation can be arbitrarily changed, and the layout state of the components may also be more complex.
[0029] A hydraulic self - adapting anti - slide pile retaining device, as Figures 1 - 3 shown, includes an anti - slide pile 100, a hydraulic buffer and limit device 200 arranged on the anti - slide pile 100, and a cable anchor 300 arranged on the hydraulic buffer and limit device 200. The cable anchor 300 penetrates through the anti - slide pile 100;
[0030] The hydraulic buffer and limit device 200 includes a hydraulic cylinder 210, a piston head 220, an anchor clip 230, a fixed anchor 240, a first elastic member 250, a one - way valve 260, and a trigger mechanism 270;
[0031] The piston head 220 is slidably connected to the inner wall of the hydraulic cylinder 210. A damping medium is provided in the hydraulic cylinder 210. A check valve 260 is provided on one side of the piston head 220 facing the anchor ring. A through hole 221 for the damping medium to pass through is formed in the piston head 220. One end of the through hole 221 communicates with the check valve 260, and the other end communicates with the side of the piston head 220 away from the fixed anchor 240. The anchor jaw 230 is used to clamp the cable 300. The anchor jaw 230 is arranged in the fixed anchor 240. The fixation of the cable 300 is achieved through the cooperation of the anchor jaw 230 and the fixed anchor 240. A first elastic member 250 is arranged between the fixed anchor 240 and the piston head 220. A trigger mechanism 270 is arranged on the side of the fixed anchor 240 close to the piston head 220. The trigger mechanism 270 is used to open the check valve 260 when the fixed anchor 240 approaches the piston head 220, so that the damping medium can flow from one side of the piston head 220 to the side of the fixed anchor 240.
[0032] As an implementation manner of the present invention, the check valve 260 is a spherical check valve, and the trigger mechanism 270 is a thimble. The thimble is used to push against the ball core of the spherical check valve to open the spherical check valve.
[0033] During use, the cable 300 is limited by the anchor jaw 230 and the fixed anchor 240. The fixed anchor 240 is subjected to the pulling force of the cable 300 and will compress the first elastic member 250, deforming the first elastic member 250. At this time, the thimble does not contact the ball core of the spherical check valve, and the spherical check valve remains in the closed state. Therefore, the piston head 220 cannot be affected by the pulling force and move, thus forming a stable support. In this state, the first elastic member 250 provides the prestress of the cable 300. In the small earthquake state, energy is absorbed through the compression deformation of the first elastic member 250, and the spherical check valve is not triggered, and the piston head 220 is in the support state. In the medium earthquake state, the first elastic member 250 can no longer bear the tension of the cable 300 and undergoes a large amount of compression. At this time, the fixed anchor 240 drives the thimble to push the ball core into the spherical check valve, so that the through hole 221 communicates with both sides of the piston head 220, and the damping liquid flows through the through hole 221, and the piston head 220 slowly moves to achieve the energy dissipation effect.
[0034] As an implementation manner of the present invention, the number of the thimbles is the same as that of the spherical one-way valves and is at least two groups, and the lengths of the multiple thimbles are different, so that the fixed anchor 240 drives the thimbles to sequentially press against and open the corresponding spherical one-way valves; thereby, according to the compression degree of the first elastic member 250, the adjustment of the moving speeds of different piston heads 220 is realized. The greater the landslide energy is, the greater the pressure on the cable anchor 300 is, which causes the fixed anchor 240 to compress the first elastic member 250 with a greater pressure, and the moving speed of the piston head 220 is also greater, thus avoiding the problem that the cable anchor 300 breaks when the landslide speed is too fast.
[0035] As an implementation manner of the present invention, an auxiliary fixing module 280 is arranged on the piston head 220. The auxiliary fixing module 280 includes a limiting rod 281, a support plate 282 and a first spring 283. The limiting rod 281 is arranged on the piston head 220, a support plate 282 is arranged at the end of the limiting rod 281, and a first spring 283 is arranged between the support plate 282 and the anchor clip 230. The first spring 283 is used to press the anchor clip 230 into the fixed anchor 240 to realize the stable fixation of the cable anchor 300. After the earthquake, through the hydraulic equipment, the cable anchor 300 is directly pulled out slowly. Under the action of the first spring 283, there is still friction between the cable anchor 300 and the anchor clip 230, which can drive the piston head 220 to move upward until it is reset.
[0036] As an implementation manner of the present invention, a plurality of grooves are formed on the outer periphery of the fixed anchor 240, a wedge-shaped slider 241 is arranged in the groove, the wedge-shaped slider 241 is connected to the bottom of the groove through a second spring, and a chute 211 corresponding to the wedge-shaped slider 241 is formed on the inner wall of the hydraulic cylinder 210. When the fixed anchor 240 is stressed, the wedge-shaped slider 241 is squeezed against the edge of the chute 211, forcing the wedge-shaped slider 241 to compress the second spring. The second spring and the first elastic member 250 work together to provide prestress for the cable anchor 300.
[0037] Further, a second elastic member 290 is arranged between the fixed anchor 240 and the one-way valve 260. The first elastic member 250 is a high-damping rubber member, and the second elastic member 290 is a thrust spring. On the one hand, it plays an auxiliary supporting role for the one-way valve 260, and on the other hand, it cooperates with the first elastic member 250 to provide prestress for the cable anchor 300.
[0038] As an implementation manner of the present invention, a guiding hole 242 is formed on the fixed anchor 240, the limiting rod 281 slidably penetrates through the guiding hole 242, and through the sliding cooperation between the limiting rod 281 and the guiding hole 242, the fixed anchor 240 slides according to a preset stroke, so that the thimble can be stably inserted into the spherical one-way valve.
[0039] As an implementation mode of the present invention, a sleeve rod 222 is arranged on the piston head 220, the sleeve rod 222 is sleeved on the anchor cable 300, and a slideway 243 for the sleeve rod 222 to pass through is formed in the center of the fixed anchor 240, and the fixed anchor 240 is further limited by cooperating with the limiting rod 281.
[0040] It should be noted that multiple seals need to be arranged between the piston head 220, the anchor cable 300 and the hydraulic cylinder 210 according to the sealing requirements of the hydraulic system to ensure effective sealing.
[0041] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred implementation modes, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.
Claims
1. A hydraulic adaptive anti-sliding pile support device, comprising an anti-sliding pile, a hydraulic buffer and limiter arranged on the anti-sliding pile, and an anchor cable arranged on the hydraulic buffer and limiter, wherein the anchor cable passes through the anti-sliding pile, and is characterized in that: The hydraulic buffer and limit device includes a hydraulic cylinder, a piston head, an anchor clip, a fixed anchor, a first elastic member, a one-way valve, and a trigger mechanism; The piston head is slidably connected to the inner wall of the hydraulic cylinder, and a damping medium is arranged in the hydraulic cylinder. A one-way valve is arranged on the side of the piston head facing the anchor ring, and a through hole for the damping medium to pass through is opened on the piston head. One end of the through hole is connected to the one-way valve, and the other end is connected to the side of the piston head away from the fixed anchor. The anchor clip is used to clamp the anchor cable, and the anchor clip is arranged in the fixed anchor. The anchor cable is fixed by the cooperation of the anchor clip and the fixed anchor. A first elastic member is arranged between the fixed anchor and the piston head, and a trigger mechanism is arranged on the side of the fixed anchor close to the piston head. The trigger mechanism is used to open the one-way valve when the fixed anchor is close to the piston head.
2. The hydraulic self-adaptive anti-slide pile retaining device according to claim 1, wherein, The one-way valve is a ball-type one-way valve, and the trigger mechanism is a push pin, which is used to push against the ball core of the ball-type one-way valve to open the ball-type one-way valve.
3. The hydraulic self - adaptive anti - slide pile retaining device according to claim 2, characterized in that, The number of the ejector pins is the same as the number of the ball-type one-way valves and there are at least two groups. The lengths of the plurality of ejector pins are different, so that the fixing anchor drives the ejector pins to push in sequence.
4. The hydraulic self-adaptive anti-slide pile retaining device according to claim 1, characterized in that, An auxiliary fixing module is arranged on the piston head, and the auxiliary fixing module comprises a limiting rod, a support plate and a first spring. The limiting rod is arranged on the piston head, a support plate is arranged at the end of the limiting rod, and a first spring is arranged between the support plate and the anchor clip.
5. The hydraulic self-adaptive anti-slide pile retaining device according to claim 4, wherein, The outer circumference of the fixing anchor is provided with a plurality of grooves, a wedge-shaped slider is arranged in the groove, the wedge-shaped slider is connected to the bottom of the groove via a second spring, and a sliding groove corresponding to the wedge-shaped slider is provided on the inner wall of the hydraulic cylinder.
6. The hydraulic self-adaptive anti-slide pile retaining device according to claim 5, characterized in that, A second elastic member is arranged between the fixing anchor and the one-way valve.
7. The hydraulic self-adaptive anti-slide pile retaining device according to claim 6, characterized in that, A guide hole is provided on the fixing anchor, and the limiting rod slides through the guide hole.
8. The hydraulic self-adaptive anti-sliding pile retaining device according to claim 7, characterized in that, A sleeve rod is arranged on the piston head, and the sleeve rod is sleeved on the anchor cable. A slideway for the sleeve rod to pass through is opened in the center of the fixed anchor.