Hanging basket type sliding platform for anchoring construction of dangerous rock mass at steep cliff

Abstract

The utility model provides a hanging basket type sliding platform for anchoring construction of a dangerous rock body at a steep cliff. The hanging basket type sliding platform comprises a hanging basket device, a lifting workbench and a lifting cable system. The hanging basket device comprises a bottom plate, a side face guardrail, an anti-smashing sliding way, a telescopic supporting sliding device, a separable anchor supporting leg and a power failure sensor. The telescopic supporting sliding device comprises a rubber tire and a telescopic mechanism connected with the rubber tire. The separated anchor supporting leg comprises an anchor rod fixed to the rock wall, a sleeve fixed to the bottom plate and a magnetic attraction device installed in the sleeve. The lifting worktable is mounted on the hanging basket device and comprises a lifting table and a lifting device for driving the lifting table to move up and down; the lifting cable system comprises a winch, a cable and a shear-resistant anchor pile. The hanging basket device can be separated from the rock mass in time, damage to the working platform when the dangerous rock mass collapses and destabilizes is effectively relieved, and the working platform can be provided for reinforcing construction of the steep wall dangerous rock mass with a high free face.

Description

Technical Field

[0001] This utility model relates to the field of rock mass anchoring and protection technology, specifically to a basket-type sliding platform for rock mass anchoring construction at steep cliffs, suitable for steep wall construction operations with a high free face. Background Technology

[0002] Large-scale rockfalls are one of the major geological hazards in canyon areas. As a global geological hazard, they are characterized by their suddenness, rapid collapse, and high destructive power. Steep rock faces, due to weathering, erosion of structural surfaces, and unloading, tend to detach from the parent rock. Especially under the influence of human activities, heavy rain, and earthquakes, they are prone to sudden instability and collapse, posing a significant threat to construction projects and human property and safety. In the process of selecting railway and highway routes, it is unavoidable to traverse steep cliffs. In engineering projects, multiple methods are often used to reinforce unstable rock masses. Common methods include removing the unstable rock mass and using external protection measures such as active and passive netting and anchor cable reinforcement. However, external reinforcement requires the construction of a construction platform.

[0003] However, in some reservoir areas, the water surface lies beneath the free face of the rock mass in the drawdown zone, making it impossible to construct a construction platform from the bottom up during the remediation process. Furthermore, in a canyon area, the selection of a highway route involved rock walls with elevation differences exceeding 400 meters, making the construction of a bottom-up platform for anchoring and protection projects costly and risky. Therefore, suspended construction platforms became a preferred solution. However, because anchoring and reinforcement projects require various mechanical equipment such as drilling rigs, tensioning devices, and anchoring materials, these machines bear significant loads. The construction process is also lengthy, involves a large working area, and requires effective avoidance techniques in case of collapse of the upper rock mass. This means that conventional suspended equipment cannot adequately meet the actual needs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a suspended platform for anchoring dangerous rock masses on steep cliffs, meeting the requirements for anchoring operations on steep walls at higher free surfaces.

[0005] The present invention adopts the following technical solution:

[0006] A suspended platform for anchoring unstable rock masses at steep cliffs includes: a suspended platform device, a lifting work platform, and a lifting cable system;

[0007] The suspended platform device includes a base plate, side railings, anti-smashing slide rails, telescopic support sliding device, detachable anchor legs, and a power failure sensor. Side railings are welded to the sides of the base plate, and the anti-smashing slide rails connect four side railings.

[0008] The telescopic support sliding device includes a rubber tire and a telescopic mechanism connected to the rubber tire. The telescopic mechanism is fixedly connected to the suspended basket device. The telescopic mechanism is used to adjust the length according to the concave and convex shape of the rock wall during the up and down movement of the suspended basket device, so that the rubber tire is supported on the rock wall and the suspended basket device moves smoothly.

[0009] The detachable anchor support leg includes an anchor rod fixed to the rock wall, a sleeve fixed to the base plate, and a magnetic suction device installed inside the sleeve. The outer end of the anchor rod is inserted into the sleeve and contacts the magnetic suction device. The power failure sensor is used to send power on / off commands to the magnetic suction device to connect or disconnect the magnetic suction device from the anchor rod.

[0010] When the anti-collision slide is hit by a collapsing rock, it triggers a power-off sensor to issue a power-off command, causing the magnetic attraction device to separate from the anchor rod, and then causing the inner side of the suspended basket device to separate from the rock mass; the normal force generated by the rock on the anti-collision slide causes the suspended basket device to rotate, thereby creating a gap between the suspended basket device and the rock mass, and the anti-collision slide serves as a slide for the rock to slide down and fall through the gap between the suspended basket device and the rock mass;

[0011] The lifting platform is installed on the suspended basket device, which serves as the base of the lifting platform. The lifting platform includes a lifting platform and a lifting device that drives the lifting platform to move up and down.

[0012] The lifting cable system is used to realize the up and down movement of the suspended basket device.

[0013] Furthermore, the suspended platform device also includes a shock-absorbing device installed between the anti-collision slide and the side guardrail, the shock-absorbing device being used to reduce the impact force of the anti-collision slide on the side guardrail.

[0014] Furthermore, the shock-absorbing device includes an inner cylinder and an outer coarse spring.

[0015] Furthermore, the base plate is a square frame formed by longitudinal and transverse welding of I-beams, and a steel plate is laid on the base plate;

[0016] The side railing is a mesh structure welded from square tubes, and the bottom part is enclosed by iron plates.

[0017] The anti-smashing track is a top plate structure connecting the inner and outer sides of the side guardrail. The outer side of the top plate structure is inclined upward at 45°. The lower part of the top plate structure is a steel plate, and the upper part is a series of intermittently laid round pipes, laid in a downward direction along the slope.

[0018] Furthermore, the telescopic mechanism includes a wheel hub, a connecting shaft, a connecting rod, a hydraulic cylinder, and a manual hydraulic pump; the rubber tire is mounted on the wheel hub; the connecting shaft passes through a hole in the middle of the wheel hub to connect the rubber tire to the wheel hub; the connecting rod includes a U-shaped steel plate and round steel, forming a pulley system with the connecting shaft; the connecting rod is connected to the telescopic rod of the hydraulic cylinder; the hydraulic cylinder is fixed to the upper surface of the base plate; the manual hydraulic pump supplies oil to the hydraulic cylinder; the manual hydraulic pump has a valve for adjusting the return oil volume.

[0019] Furthermore, one end of the anchor rod is horizontally fixed inside the rock mass, and the other end extends to the side guardrail; when installing the anchor rod, a drilling rig is used to drill a hole in the rock wall, and after insertion, grouting is performed for anchoring; one end of the sleeve is fixed to the base plate, and the other end is sleeved on the other end of the anchor rod; the magnetic attraction device is placed inside the sleeve, and after being energized, it generates magnetic force and attracts the end of the anchor rod together;

[0020] There are two power failure sensors. One power failure sensor is installed below the shock absorption device 106 and is triggered by the shock absorption device. The other power failure sensor is installed on the side guardrail and is triggered manually.

[0021] Furthermore, the lifting device includes a T-screw, a T-nut, a reduction gearbox, a motor, and a control handle;

[0022] The lifting platform is a square steel frame welded longitudinally and transversely from I-beams;

[0023] A T-nut is fixed at each of the four corners of the lifting platform;

[0024] A reduction gearbox is fixed at each of the four corners of the base plate; the reduction gearbox is used to reduce the rotational speed of the T-screw.

[0025] The lower end of the gearbox is connected to the motor; the upper output shaft of the gearbox is fixedly connected to the T-screw via a connector; the T-screw is screwed into the T-nut;

[0026] The motor can rotate in both forward and reverse directions; the motor drives the T-shaped screw to rotate, thereby realizing the up and down movement of the lifting platform;

[0027] The control handle is used to start and stop the motor, as well as to adjust the motor's forward and reverse rotation.

[0028] Furthermore, the lifting cable system includes a winch, a cable, and shear anchors. The shear anchors are fixed to the ground, and the upper end of the cable passes around the shear anchors and is locked to them with a locking buckle. The lower end of the cable is connected to a winch inside the suspended platform device, and the up and down movement of the suspended platform device is achieved by the winch winding and unwinding the cable.

[0029] Furthermore, the lifting cable system also includes guide pulleys and positioning pulleys;

[0030] One winch is installed at each of the four corners of the base plate;

[0031] A positioning pulley is installed at each of the four corners of the side guardrail to support the cable and prevent friction against the suspended basket device;

[0032] The guide pulley is fixed to an I-beam; the I-beam is bolted to the ground, so that the guide pulley extends out of the ground to the free surface, which is used to change the direction of the cable from nearly horizontal to nearly vertical;

[0033] The cable is connected to the winch at its lower end via the guide pulley and the positioning pulley, and its upper end is locked by the latch after passing around the shear anchor pile, thereby realizing the connection between the cable and the shear anchor pile;

[0034] The winch enables the overall vertical movement of the suspended platform by winding and unwinding the cable.

[0035] The shear anchor pile uses its own shear resistance to provide tension for the cable; the shear anchor pile is drilled in the ground rock mass, then a steel pipe is inserted, and finally backfilled with cement grout.

[0036] This utility model has the following beneficial effects:

[0037] 1. The anti-collision sliding track designed in this device, combined with detachable anchor legs, can realize the timely separation of the suspended platform from the rock mass, effectively reducing the damage to the working platform and personnel when the upper dangerous rock mass collapses and becomes unstable during construction.

[0038] 2. The device is equipped with an internal lifting platform that can move within the overall elevation range of the suspended platform and also move flexibly up and down within a small range inside the suspended platform, providing convenience for construction operations;

[0039] 3. The device uses shear anchor piles to provide tension for the cable, making full use of the overturning resistance of the large rock mass on the ground and providing a large bearing capacity for the suspended platform;

[0040] 4. The device adopts a telescopic support sliding device, which can adjust the length of the outriggers according to the concave and convex shape of the rock wall during the up and down movement of the suspended platform, thereby improving the adaptability to uneven wall surfaces and enhancing the stability of the overall suspended platform.

[0041] 5. The device uses anchor bolts as temporary support legs, which can effectively restrain the horizontal displacement of the entire suspended platform and improve its anti-sway capability.

[0042] 6. This utility model provides a design method for the spacing and length of shear anchor piles, and gives the judgment criteria for rock mass toppling instability, namely the relationship between the bending moment of the rock mass at the edge curve and the sliding force of the horizontal surface at the bottom of the anchor pile and the critical value of instability. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the system architecture of the suspended basket sliding platform used for anchoring dangerous rock masses at steep cliffs, according to an embodiment of this utility model.

[0045] Figure 2 This is a schematic diagram of the overall structure of the suspended basket device in the embodiment of this utility model;

[0046] Figure 3 This is a schematic diagram of the lifting worktable in an embodiment of the present utility model;

[0047] Figure 4 This is a schematic diagram of the lifting cable system in an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of the detachable anchor support leg in an embodiment of the present invention;

[0049] Figure 6 This is a schematic diagram of the telescopic support sliding device in an embodiment of the present invention;

[0050] Figure 7 This is a schematic diagram of the planar arrangement of the shear anchor piles in the embodiments of this utility model.

[0051] Wherein: 1—suspended basket device; 2—lifting work platform; 3—lifting cable system;

[0052] 101—Base plate; 102—Side railing; 103—Anti-smashing track; 104—Separable anchor support leg; 105—Telescopic support sliding device; 106—Shock absorption device; 107—Power failure sensor;

[0053] 201—Lifting platform; 202—T-screw; 203—T-nut; 204—Gearbox; 205—Motor; 206—Control handle;

[0054] 301—Winder; 302—Cable; 303—Positioning pulley; 304—Guide pulley; 305—Shear anchor pile; 306—I-beam; 307—Lock;

[0055] 401—Cement grout; 402—Anchor bolt; 403—Sleeve; 404—Magnetic suction device;

[0056] 501—Rubber tire; 502—Wheel hub; 503—Connecting shaft; 504—Connecting rod; 505—Telescopic rod; 506—Cylinder block; 507—Bracket; 508—Manual hydraulic pump. Detailed Implementation

[0057] To make the technical problems, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0058] like Figure 1 As shown, this utility model embodiment provides a suspended basket sliding platform for anchoring construction of dangerous rock masses at steep cliffs, including a suspended basket device 1, a lifting work platform 2, and a lifting cable system 3.

[0059] The upper end of the lifting cable system 3 is anchored to the ground by shear anchor piles 305, and the lower end is fixed inside the suspended basket device 1. The suspended basket device 1 is suspended to the rock wall by cable 302. The lifting basket device 1 can be moved up and down by winch 301 to wind up and down cable 302. The lifting work platform 2 is fixed inside the suspended basket device 1. The lifting platform 201 can be moved up and down within a small range inside the suspended basket device 1 by rotating T-screw 202.

[0060] like Figure 2 As shown, the overall structure of the suspended platform device 1 includes a base plate 101, side guardrails 102, anti-smashing slide rails 103, detachable anchor legs 104, telescopic support sliding device 105, shock absorption device 106, and power failure sensor 107.

[0061] The base plate 101, side railings 102, and anti-collision slide 103 form a rigid frame; the base plate 101 serves as the foundation, with side railings 102 welded to the sides; the anti-collision slide 103 connects four side railings 102; a shock-absorbing device 106 is installed between the anti-collision slide 103 and the side railings 102 to reduce the impact force of the anti-collision slide 103 on the side railings 102; a power failure sensor 107 is installed below the shock-absorbing device 106 near the rock wall to send a demagnetization command to the magnetic attraction device 404; telescopic support. In the sliding device 105, the support 507 of the cylinder 506 is fixed to the base plate 101, and the rubber tire 501 is supported on the rock wall to ensure the stable movement of the suspended platform device 1. It can be extended and retracted by the manual hydraulic pump 508 to adapt to the concave and convex surfaces of the rock wall. In the separable anchor support leg 104, one end of the anchor rod 402 is poured into the mortar of the drilled hole in the rock wall, and the other end is inserted into the sleeve 403 on the side guardrail 102. The anchor rod 402 and the suspended platform device 1 can be separated and joined by the de-energization and energization of the magnetic attraction device 404 in the sleeve 403.

[0062] The anti-smashing slide 103 is a top plate structure connecting the inner and outer sides of the side guardrail 102; the outer side of the top plate structure is inclined upward at 45°; the lower part of the top plate structure is a 10mm thick steel plate, and the upper part is a 50mm diameter round pipe laid at 300mm intervals, with the laying direction along the slope downward.

[0063] The anti-collision slide 103 is connected to the side guardrail 102 by a shock-absorbing device 106; the shock-absorbing device 106 is used to buffer when the dangerous rock collapses and falls onto the anti-collision slide 103, reducing the impact on the side guardrail 102; the shock-absorbing device 106 includes an inner cylinder and an outer thick spring.

[0064] Figure 3 As shown, the structure of the lifting worktable 2 includes a lifting platform 201, a T-screw 202, a T-nut 203, a reduction gearbox 204, a motor 205, and a control handle 206.

[0065] The gearbox 204 is fixed below the four corners of the base plate 101, and the motor 205 is fixed below the gearbox 204. The T-screw 202 is connected to the output shaft of the gearbox 204 to form a rotating device driven by the motor 205. The T-nut 203 is fixed at the four corners of the lifting platform 201. The T-screw 202 passes through the T-nut 203 to connect with the lifting platform 201. The motor 205 can rotate forward and reverse. The rotation of the T-screw 202 driven by the motor 205 realizes the up and down movement of the lifting platform 201. The control handle 206 is arranged inside the basket device 1 to control the forward and reverse rotation of the motor 205 to achieve the purpose of the up and down movement of the lifting platform 201.

[0066] like Figure 4The diagram shows the structure of the lifting cable system 3, which includes a winch 301, a cable 302, a positioning pulley 303, a guide pulley 304, a shear anchor pile 305, an I-beam 306, and a locking buckle 307.

[0067] Shear anchor piles 305 are fixed to the ground. The upper end of the cable 302 passes around the shear anchor piles 305 and is locked to the shear anchor piles 305 by a locking buckle 307. The lower end of the cable 302 is connected to the winch 301 inside the suspended platform device 1. Four positioning pulleys 303 are respectively installed at the four corners of the side guardrail 102 to constrain the position of the cable 302 and prevent friction against the suspended platform device 1. Guide pulleys 304 are installed on the I-beam 306, which is horizontally anchored to the ground and extends out of the rock wall to change the direction of the cable 302. The lower end of the cable 302 is connected to the winch 301 through the lower ends of the guide pulleys 304 and the positioning pulleys 303. The up and down movement of the suspended platform device 1 is achieved by the winch 301 winding and unwinding the cable 302.

[0068] like Figure 5 As shown, the structure of the detachable anchor support leg 104 includes cement grout 401, anchor rod 402, sleeve 403 and magnetic attraction device 404.

[0069] One end of the anchor bolt 402 is horizontally inserted into the drilled hole in the rock wall and anchored using cement grout 401. The other end extends to the side guardrail 102. The magnetic suction device 404 is installed inside the sleeve 403. One end of the sleeve 403 is fixed to the base plate 101, and the other end of the sleeve 403 is fitted onto the other end of the anchor bolt 402. The sleeve uses the magnetic suction device 404 to attract and connect the anchor bolt 402. When the magnetic suction device 404 is energized, it is connected to the anchor bolt 402; when the power is off, it is disconnected from the anchor bolt 402.

[0070] There are two power failure sensors 107, which are used to send power on / off commands to the magnetic attraction device 404. One power failure sensor 107 is installed below the shock absorption device 106 and needs to be triggered by the shock absorption device 107; the other power failure sensor 107 is installed on the side guardrail 102 and needs to be triggered manually.

[0071] When the shock-absorbing device 106 extends or retracts to a certain extent, it triggers the power-off sensor 107 installed therein. The power-off sensor 107 issues a power-off command to cause the magnetic attraction device 404 to lose its magnetic force, thereby separating the anchor rod 402 from the sleeve 403.

[0072] After the anti-collision slide 103 is hit by a large collapsed rock, the inner side of the suspended basket device 1 separates from the rock mass; the rock mass exerts a normal force on the anti-collision slide 103; the normal force causes the suspended basket device 1 to rotate, thereby creating a gap between the suspended basket device 1 and the rock mass; the anti-collision slide 103 serves as a slide for the rock mass to slide down, falling through the gap; the personnel and equipment inside the suspended basket device 1 are prevented from being hit by the rock mass due to the rotation of the suspended basket device 1.

[0073] like Figure 6 The diagram shows the structure of the telescopic support sliding device 105, which includes a rubber tire 501, a wheel hub 502, a connecting shaft 503, a connecting rod 504, a hydraulic cylinder 509, a telescopic rod 505, a cylinder body 506, a bracket 507, and a manual hydraulic pump 508.

[0074] A rubber tire 501 is mounted on a wheel hub 502; a connecting shaft 503 passes through a hole in the middle of the wheel hub 502 to connect the two; the wheel hub 502 is connected to a connecting rod 504 via the connecting shaft 503; the connecting rod 504 is connected to the telescopic rod 505 of the hydraulic cylinder 509; the connecting rod 504 includes a U-shaped steel plate and a round steel bar, forming a pulley system with the connecting shaft 503; the cylinder body 506 of the hydraulic cylinder 509 is fixed to the base plate 101 via a bracket 507; the extension and retraction of the hydraulic cylinder 509 supports the suspended platform 1 against the rock wall; the hydraulic cylinder 509 is fixed to the upper surface of the base plate 101; a manual hydraulic pump 508 supplies oil to the hydraulic cylinder 509; the manual hydraulic pump 508 has a valve to adjust the return oil volume to prevent the return oil speed from being too fast.

[0075] like Figure 7 The diagram shows the planar layout of the shear anchor piles 305 on the ground. A total of four shear anchor piles 305 are required for the suspended platform. Two shear anchor piles 305 are located at each end of the suspended platform device 1. The two anchor piles closer to the free surface provide tension to the outside of the suspended platform device 1, and the two anchor piles farther from the free surface provide tension to the inside of the suspended platform device 1.

[0076] This invention provides a suspended platform for anchoring unstable rock masses on steep cliffs. By combining anti-collision sliding tracks with detachable anchor legs, the platform can be separated from the rock mass in a timely manner, effectively mitigating damage to the working platform in the event of rock mass collapse and instability. An internal lifting platform allows for flexible vertical movement within a small area, in addition to moving within the overall elevation range. Shear anchor piles provide the suspended platform with significant load-bearing capacity. This device can be applied to construction operations on steep cliffs with high free-face areas.

[0077] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A suspended platform for anchoring unstable rock masses at steep cliffs, characterized in that, include: Suspended platform device, lifting work platform, lifting cable system; The suspended platform device includes a base plate, side railings, anti-smashing slide rails, telescopic support sliding device, detachable anchor legs, and a power failure sensor. Side railings are welded to the sides of the base plate, and the anti-smashing slide rails connect four side railings. The telescopic support sliding device includes a rubber tire and a telescopic mechanism connected to the rubber tire. The telescopic mechanism is fixedly connected to the suspended basket device. The telescopic mechanism is used to adjust the length according to the concave and convex shape of the rock wall during the up and down movement of the suspended basket device, so that the rubber tire is supported on the rock wall and the suspended basket device moves smoothly. The detachable anchor support leg includes an anchor rod fixed to the rock wall, a sleeve fixed to the base plate, and a magnetic suction device installed inside the sleeve. The outer end of the anchor rod is inserted into the sleeve and contacts the magnetic suction device. The power failure sensor is used to send power on / off commands to the magnetic suction device to connect or disconnect the magnetic suction device from the anchor rod. When the anti-collision slide is hit by a collapsing rock, it triggers a power-off sensor to issue a power-off command, causing the magnetic attraction device to separate from the anchor rod, and then causing the inner side of the suspended basket device to separate from the rock mass; the normal force generated by the rock on the anti-collision slide causes the suspended basket device to rotate, thereby creating a gap between the suspended basket device and the rock mass, and the anti-collision slide serves as a slide for the rock to slide down and fall through the gap between the suspended basket device and the rock mass; The lifting platform is installed on the suspended basket device, which serves as the base of the lifting platform. The lifting platform includes a lifting platform and a lifting device that drives the lifting platform to move up and down. The lifting cable system is used to realize the up and down movement of the suspended basket device.

2. The suspended platform for anchoring dangerous rock masses at steep cliffs according to claim 1, characterized in that: The suspended platform device also includes a shock-absorbing device installed between the anti-collision slide and the side guardrail, which is used to reduce the impact force of the anti-collision slide on the side guardrail.

3. A suspended platform for anchoring unstable rock masses at steep cliffs, as described in claim 1, is characterized in that: The shock absorption device consists of an inner cylinder and an outer thick spring.

4. A suspended platform for anchoring unstable rock masses at steep cliffs, as described in claim 1, characterized in that: The base plate is a square frame welded longitudinally and transversely from I-beams, and a steel plate is laid on top of the base plate; The side railing is a mesh structure welded from square tubes, and the bottom part is enclosed by iron plates. The anti-smashing track is a top plate structure connecting the inner and outer sides of the side guardrail. The outer side of the top plate structure is inclined upward at 45°. The lower part of the top plate structure is a steel plate, and the upper part is a series of intermittently laid round pipes, laid in a downward direction along the slope.

5. A suspended platform for anchoring unstable rock masses at steep cliffs, as described in claim 1, characterized in that: The telescopic mechanism includes a wheel hub, a connecting shaft, a connecting rod, a hydraulic cylinder, and a manual hydraulic pump. The rubber tire is mounted on the wheel hub. The connecting shaft passes through a hole in the middle of the wheel hub to connect the rubber tire to the wheel hub. The connecting rod includes a U-shaped steel plate and a round steel bar, forming a pulley system with the connecting shaft. The connecting rod is connected to the telescopic rod of the hydraulic cylinder. The hydraulic cylinder is fixed to the upper surface of the base plate. The manual hydraulic pump supplies oil to the hydraulic cylinder. The manual hydraulic pump has a valve to adjust the return oil volume.

6. A suspended platform for anchoring unstable rock masses at steep cliffs, as described in claim 1, characterized in that: One end of the anchor rod is horizontally fixed inside the rock mass, and the other end extends to the side guardrail. When installing the anchor rod, a drilling machine is used to drill a hole in the rock wall, and after it is inserted, grouting is performed to anchor it. One end of the sleeve is fixed to the base plate, and the other end is fitted onto the other end of the anchor rod. The magnetic attraction device is placed inside the sleeve, and when energized, it generates magnetic force and attracts the end of the anchor rod together. There are two power failure sensors. One power failure sensor is installed below the shock absorption device and is triggered by the shock absorption device. The other power failure sensor is installed on the side guardrail and is triggered manually.

7. A suspended platform for anchoring unstable rock masses at steep cliffs, as described in claim 1, characterized in that: The lifting device includes a T-screw, a T-nut, a reduction gearbox, a motor, and a control handle; The lifting platform is a square steel frame welded longitudinally and transversely from I-beams; A T-nut is fixed at each of the four corners of the lifting platform; A reduction gearbox is fixed at each of the four corners of the base plate; the reduction gearbox is used to reduce the rotational speed of the T-screw. The lower end of the gearbox is connected to the motor; the upper output shaft of the gearbox is fixedly connected to the T-screw via a connector; the T-screw is screwed into the T-nut; The motor can rotate in both forward and reverse directions; the motor drives the T-shaped screw to rotate, thereby realizing the up and down movement of the lifting platform; The control handle is used to start and stop the motor, as well as to adjust the motor's forward and reverse rotation.

8. A suspended platform for anchoring unstable rock masses at steep cliffs, as described in claim 1, characterized in that: The lifting cable system includes a winch, a cable, and shear anchors. The shear anchors are fixed to the ground, and the upper end of the cable passes around the shear anchors and is locked to them with a locking buckle. The lower end of the cable is connected to the winch inside the suspended platform. The lifting and lowering of the suspended platform is achieved by the winch winding and unwinding the cable.

9. A suspended platform for anchoring unstable rock masses at steep cliffs, as described in claim 8, characterized in that: The lifting cable system also includes guide pulleys and positioning pulleys; One winch is installed at each of the four corners of the base plate; A positioning pulley is installed at each of the four corners of the side guardrail to support the cable and prevent friction against the suspended basket device; The guide pulley is fixed to an I-beam; the I-beam is bolted to the ground, so that the guide pulley extends out of the ground to the free surface, which is used to change the direction of the cable from nearly horizontal to nearly vertical; The cable is connected to the winch at its lower end via the guide pulley and the positioning pulley, and its upper end is locked by the latch after passing around the shear anchor pile, thereby realizing the connection between the cable and the shear anchor pile; The winch enables the overall vertical movement of the suspended platform by winding and unwinding the cable. The shear anchor pile uses its own shear resistance to provide tension for the cable; the shear anchor pile is drilled in the ground rock mass, then a steel pipe is inserted, and finally backfilled with cement grout.

Images