Skulling face slope protection device and protection method thereof

Abstract

The invention belongs to the technical field of slope protection, and particularly relates to a stone face slope protection device and a protection method thereof. The protective device comprises protective frame plates and a protective net, wherein the protective net is mounted between the two adjacent protective frame plates; an anchoring structure is mounted on the protective frame plate; the anchoring structure comprises a base and a pressing rod, the base is connected to the lower portion of the protective frame plate, a plurality of sliding blocks are evenly and slidably connected to the base in the circumferential direction of the base, supporting plates are fixedly connected to the sliding blocks, and a plurality of inserting plates are arranged on the supporting plates; the pressing rod penetrates through the protective frame plate, the lower end of the pressing rod is fixedly connected with a pressing seat, and the surface of the pressing rod is in threaded connection with a locking disc; a plurality of clamping plates are evenly arranged on the surface of the pressing base in the circumferential direction, a trapezoid block is fixedly connected to the sliding block, the face, facing the pressing base, of the trapezoid block is an inclined face, and clamping grooves clamped with the clamping plates are formed in the inclined face of the trapezoid block. According to the anchoring structure, multi-point anchoring can be formed, the protective frame plate is effectively prevented from sliding or falling off on the slope, and the stability of the whole structure is improved.

Description

Technical Field

[0001] This invention relates to the field of slope protection technology, and in particular to a rock face slope protection device and its protection method. Background Technology

[0002] Slope construction is one of the more challenging engineering tasks in building construction. Slope protection structures are structures fixed on slopes to prevent landslides and rockfalls. Existing slope protection structures use anchor rods embedded in the ground to fix the protective netting to the ground, and the protective netting intercepts falling rocks and soil clods.

[0003] The existing protective netting is fixed by anchor bolts, which are simply inserted into the slope. The fixing effect is generally poor. When encountering large impacts or severe weather, the anchor bolts become extremely unstable, and the protective netting cannot be stably installed on the edge of the slope, resulting in interception failure. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a slope protection device and method for rock face slopes. By incorporating anchoring structures and protective frame plates, the stability of the protective net is greatly increased, aiming to solve the problems in the background technology.

[0005] To achieve the above-mentioned technical objectives, the specific technical solution of the present invention is as follows: The present invention proposes a slope protection device for rock face, comprising: a protective frame plate and a protective net, wherein the protective net is installed between two adjacent protective frame plates; an anchoring structure is installed on the protective frame plate for fixing the protective frame plate to the slope; the anchoring structure includes a base and a pressure rod, the base is connected to the lower part of the protective frame plate, and multiple sliders are evenly slidably connected to the base along its circumference, a support plate is fixedly connected to the slider, and multiple insert plates are provided on the support plate; the pressure rod passes through the protective frame plate, and a pressure seat is fixedly connected to the lower end of the pressure rod for driving the slider to slide, and a locking disc is threadedly connected to the surface of the pressure rod; multiple clamping plates are evenly provided on the surface of the pressure seat along its circumference, and a trapezoidal block is fixedly connected to the slider, the side of the trapezoidal block facing the pressure seat is set as an inclined surface, and a groove for engaging with the clamping plates is provided on the inclined surface of the trapezoidal block.

[0006] As a preferred embodiment of the present invention, the surface of the pressure seat is provided with a sliding groove that is slidably connected to the card plate, an elastic element is fixedly connected between the card plate and the sliding groove, and a guide block is fixedly connected to the card plate.

[0007] As a preferred embodiment of the present invention, the upper surface of the pressure base is provided with a rotating disk, the rotating disk is threadedly connected to the pressure rod, the rotating disk is provided with an arc-shaped hole that is slidably connected to the guide block, and the pressure rod is threadedly connected with a locking nut for limiting the rotation disk.

[0008] As a preferred embodiment of the present invention, the inclined surface of the trapezoidal block is provided with a limiting protrusion, and the card plate is provided with a limiting groove that is slidably connected to the limiting protrusion.

[0009] As a preferred embodiment of the present invention, an anchor rod is movably connected to the base, the anchor rod passes through the base, a top block is fixedly connected to the upper end of the anchor rod, a first spring is connected to the surface of the anchor rod, and an anchor block is fixedly connected to the lower end of the anchor rod.

[0010] As a preferred embodiment of the present invention, the lower surface of the protective frame plate is provided with an annular retaining ring, and the annular retaining ring is provided with a socket hole that cooperates with the insert plate; a plurality of anchor plates are fixedly connected to the lower surface of the protective frame plate.

[0011] As a preferred embodiment of the present invention, the base is provided with a sliding hole that is slidably connected to the slider, and sliding rails that are slidably connected to the slider are provided on both sides of the sliding hole.

[0012] As a preferred embodiment of the present invention, a pair of buffer mechanisms are fixedly connected to the protective frame plate. The buffer mechanism includes a rotating frame, one end of which is rotatably connected to the protective frame plate. A sliding rod is fixedly connected to the rotating frame, and a moving block is slidably connected to the sliding rod. A guide rail that is slidably connected to the moving block is fixedly connected to the rotating frame. A second spring is connected to the surface of the sliding rod. A first locking post is fixedly connected to the moving block, and a second locking post is fixedly connected to the protective frame plate. Two ropes at the same end of the protective net are respectively connected to the first locking post and the second locking post.

[0013] As a preferred embodiment of the present invention, the buffer mechanism further includes a sleeve seat, which is fixedly connected to the protective frame plate. A sleeve rod is movably connected inside the sleeve seat, a third spring is connected to the surface of the sleeve rod, and a hinge seat is fixedly connected to one end of the sleeve rod. A connecting rod is hinged between the hinge seat and the rotating frame.

[0014] A method for protecting a rock-faced slope includes the following steps:

[0015] Step 1: Dig out multiple pre-embedded holes at intervals on the slope. The diameter of the pre-embedded holes is the same as the length of the base. Then, compact the inside of the pre-embedded holes.

[0016] Step 2: Place the anchoring structure at the bottom of the pre-embedded hole, with the uppermost insert plate of the support plate protruding from the pre-embedded hole, and install the protective frame plate at the top of the pre-embedded hole. Insert the anchor plate into the slope using external force.

[0017] Step 3: Press down the pressure rod to drive the pressure seat down. When the pressure seat descends, it drives the support plate to expand outward and insert the insert plate into the inner wall of the pre-embedded hole. The uppermost insert plate is inserted into the insertion hole, and at the same time, the anchor block is inserted into the bottom of the pre-embedded hole. When the pressure seat descends to the bottom, the locking plate is engaged in the slot. Then, the pressure rod is locked and fixed by rotating the locking disc.

[0018] Step 4: Install the protective net between two adjacent protective frame panels, and tie the ropes at both ends of the protective net to the first locking post and the second locking post respectively to complete the installation of the protective device;

[0019] Step 5: Use the protective net to intercept falling rocks and clods of earth on the slope. When the protective net is impacted, it opens outwards, and the buffer mechanism can cushion the impact, slowing down and stopping the falling rocks.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention uses an anchoring structure with a base, a pressure rod, and a pressure seat. The pressure seat descends, causing multiple support plates to expand outward, inserting the insert plate into the inner wall of the pre-embedded hole. The support plates compact the inner wall of the pre-embedded hole, while the anchor block is inserted into the bottom of the pre-embedded hole. This greatly increases the stability of the protective frame plate installed on the slope and ensures the interception effect of the protective net.

[0022] 2. This invention provides a buffer mechanism for buffering the protective netting by installing it on the protective frame plate. The buffer mechanism can buffer the protective netting in two different directions, thereby dispersing the impact force of falling rocks and reducing their speed, thus protecting the protective netting and the protective frame plate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a rock face slope protection device proposed in this invention.

[0024] Figure 2 This is a schematic diagram of the protective frame plate and anchoring structure proposed in this invention.

[0025] Figure 3 for Figure 2 Another perspective diagram.

[0026] Figure 4 This is a schematic diagram of the anchoring structure proposed in this invention.

[0027] Figure 5 This is a schematic diagram of the base proposed in this invention.

[0028] Figure 6 This is a schematic diagram of the pressure seat proposed in this invention.

[0029] Figure 7 This is a schematic diagram of the buffer mechanism proposed in this invention.

[0030] The corresponding names of the attached figures are as follows: 1. Protective frame plate; 101. Second locking post; 102. Anchor plate; 103. Annular retaining ring; 104. Insertion hole; 2. Protective net; 3. Anchoring structure; 31. Base; 32. Pressure rod; 33. Pressure seat; 331. Rotating disk; 332. Locking nut; 333. Arc-shaped hole; 334. Slide groove; 335. Clamping plate; 336. Limiting groove; 337. Guide block; 338. Elastic element; 34. Locking disc; 35. Support plate; 36. 37. Insert plate; 38. Sliding hole; 39. Sliding block; 30. Slide rail; 310. Trapezoidal block; 311. Limiting protrusion; 312. Slot; 313. Top block; 314. Anchor rod; 315. First spring; 316. Anchor block; 4. Buffer mechanism; 41. Rotating frame; 42. Guide rail; 43. Moving block; 44. First locking pin; 45. Sliding rod; 46. Second spring; 47. Sleeve seat; 48. Sleeve rod; 49. Third spring; 410. Hinge seat; 411. Connecting rod. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Example: This example discloses a rock face slope protection device, suitable for installation on muddy ground to intercept falling rocks and soil clods; such as Figures 1-7 As shown, this embodiment includes: a protective frame plate 1 and a protective net 2. The protective net 2 is installed between two adjacent protective frame plates 1. Two ropes are provided at both ends of the protective net 2. The ropes are used to tie the protective frame plate 1. An anchoring structure 3 is installed on the protective frame plate 1 to fix the protective frame plate 1 on the slope. The anchoring structure 3 is located at the center of the protective frame plate 1.

[0033] like Figures 4-6As shown, the anchoring structure 3 includes a base 31 and a pressure rod 32. The base 31 is circular or rectangular and is connected to the bottom of the protective frame plate 1. Four sliders 38 are evenly slidably connected to the base 31 along its circumference. The base 31 is provided with sliding holes 37 that are slidably connected to the sliders 38, and sliding rails 39 that are slidably connected to the sliders 38 are provided on both sides of the sliding holes 37 to ensure that the sliders 38 and the sliding holes 37 will not fall off. A support plate 35 is fixedly connected to the slider 38, and multiple insert plates 36 are provided on the support plate 35. The pressure rod 32 is a threaded rod that passes through the protective frame plate 1. The protective frame plate 1 and the pressure rod 32 are movably connected to the protective frame plate 1. The lower end of the pressure rod 32 is fixedly connected to the pressure seat 33, which is used to drive the slider 38 to slide. The pressure seat 33 is located between four support plates 35, and the surface of the pressure rod 32 is threadedly connected to the locking plate 34. The locking plate 34 is located on the upper surface of the protective frame plate 1 and is used to lock and fix the pressure rod 32. Four clamping plates 335 are evenly arranged on the surface of the pressure seat 33 along its circumference. A trapezoidal block 310 is fixedly connected to the slider 38. The side of the trapezoidal block 310 facing the pressure seat 33 is set as an inclined surface. The inclined surface of the trapezoidal block 310 is provided with a clamping plate. The 335 engages with the slot 312; in specific implementation: a circular pre-embedded hole is dug on the slope and the inside of the pre-embedded hole is compacted. Then, the anchoring structure 3 is placed in the pre-embedded hole. The pressure rod 32 drives the pressure seat 33 to descend. When the pressure seat 33 descends, it contacts the inclined surface of the trapezoidal block 310, which drives the slider 38 and the support plate 35 to move outward. The support plate 35 is in close contact with the inner wall of the pre-embedded hole and compacts the inner wall of the pre-embedded hole. At the same time, multiple insert plates 36 are inserted into the inner wall of the pre-embedded hole, so that the base 31 is stably installed in the pre-embedded hole. When the pressure seat 33 descends to the bottom, the locking plate 312 engages with the slot 312. The base 31 is stably connected to each slider 38 by engaging the slot 312. Then, by rotating the locking disc 34, the locking disc 34 is tightly attached to the upper surface of the protective frame plate 1, thus locking and fixing the pressure rod 32. In this embodiment, the pressure rod 32 drives the pressure seat 33 to press down. By utilizing the cooperation between the locking plate 335 and the inclined surface of the trapezoidal block 310, the support plate 35 and the insert plate 36 are simultaneously extended outward, so that the insert plate 36 is inserted into the slope soil, forming multi-point anchoring, effectively preventing the protective frame plate 1 from sliding or falling off on the slope, and improving the stability of the overall structure.

[0034] Preferably, the trapezoidal block 310 has a limiting protrusion 311 on its inclined surface, and the clamping plate 335 has a limiting groove 336 that is slidably connected to the limiting protrusion 311. When the pressure seat 33 descends, the clamping plate 335 slides down along the limiting groove 336, so that the clamping plate 335 can be smoothly engaged in the clamping groove 312.

[0035] Preferably, an anchor rod 314 is movably connected to the base 31, the anchor rod 314 passes through the base 31, a top block 313 is fixedly connected to the upper end of the anchor rod 314, and a first spring 315 is connected to the surface of the anchor rod 314. An anchor block 316 is fixedly connected to the lower end of the anchor rod 314. When the pressure seat 33 descends, it contacts the top block 313, which drives the anchor rod 314 and the anchor block 316 to descend and insert into the soil. The anchor block 316 and the insert plate 36 form multiple anchoring points in different directions and positions in the pre-embedded hole, which further enhances the stability of the anchoring structure 3 installed in the slope soil.

[0036] Preferably, the lower surface of the protective frame plate 1 is provided with an annular retaining ring 103, and the annular retaining ring 103 is provided with insertion holes 104 that cooperate with the insert plate 36. The number of insertion holes 104 can be set to four or eight. During the outward expansion and movement of the support plate 35, the uppermost insert plate 36 is inserted into the insertion hole 104, so that the support plate 35 can be connected with the protective frame plate 1, thereby enhancing the connection stability between the anchoring structure 3 and the protective frame plate 1. Multiple anchor plates 102 are fixedly connected to the lower surface of the protective frame plate 1. The anchor plates 102 are located at the four corners of the protective frame plate 1 and are inserted into the slope soil.

[0037] like Figure 6 As shown, the surface of the pressure base 33 is provided with a groove 334 that is slidably connected to the clamping plate 335. The clamping plate 335 can slide within the groove 334. An elastic element 338 is fixedly connected between the clamping plate 335 and the groove 334. The elastic element 338 is a spring, and a guide block 337 is fixedly connected to the clamping plate 335. The upper surface of the pressure base 33 is provided with a rotating disk 331. The rotating disk 331 is provided with a handle for easy rotation. The rotating disk 331 is threadedly connected to the pressure rod 32. The rotating disk 331 is provided with a slidable connection to the guide block 337. The arc-shaped hole 333 is eccentrically set on the rotating disk 331. The pressure rod 32 is threaded with a locking nut 332 for limiting the rotation disk 331. The position of the clamping plate 335 can be adjusted by rotating the rotating disk 331. By adjusting the length of the clamping plate 335 protruding from the rotating disk 331, the outward movement distance of the support plate 35 can be adjusted. By adjusting the insertion angle and depth of the insert plate 36, it can adapt to slopes with different slopes and soil conditions, and is especially suitable for slope protection with uneven surfaces such as rock surfaces.

[0038] like Figure 2 and Figure 7As shown, a pair of buffer mechanisms 4 are fixedly connected to the protective frame plate 1. The buffer mechanism 4 includes a rotating frame 41, one end of which is rotatably connected to the protective frame plate 1. A sliding rod 45 is fixedly connected to the rotating frame 41, and a moving block 43 is slidably connected to the sliding rod 45. A guide rail 42, which is slidably connected to the moving block 43, is fixedly connected to the rotating frame 41. A second spring 46 is connected to the surface of the sliding rod 45. A first locking post 44 is fixedly connected to the moving block 43, and a second locking post 101 is fixedly connected to the protective frame plate 1. Two ropes at the same end of the protective net 2 are respectively connected to the first locking post 44 and the second locking post 101. The rope at the upper end of the protective net 2 is tied to the first locking post 44, and the rope at the lower end is tied to the second locking post 101. When the protective net 2 intercepts falling rocks, the second spring 46 can buffer the falling rocks. Furthermore, the buffer mechanism 4 also includes a sleeve seat 47, which is perpendicular to the rotating frame 41. The sleeve seat 47 is fixedly connected to the protective frame plate 1. A sleeve rod 48 is movably connected inside the sleeve seat 47. A third spring 49 is connected to the surface of the sleeve rod 48, and a hinge seat 410 is fixedly connected to one end of the sleeve rod 48. A connecting rod 411 is hinged between the hinge seat 410 and the rotating frame 41. In this embodiment, when the protective net 2 intercepts high-speed falling rocks, the impact force will be transmitted through the rope, pulling the moving block 43 to compress the second spring 46. At the same time, the impact force is transmitted through the connecting rod 411 and the sleeve rod 48, causing the sleeve rod 48 to compress the third spring 49. This "double spring" synergistic mechanism can absorb and dissipate the huge impact kinetic energy of the falling rocks in stages and efficiently, greatly reducing the instantaneous damage of the impact force to the anchoring structure and the slope.

[0039] This embodiment also discloses a method for protecting rock-faced slopes, based on the aforementioned protective device, comprising the following steps:

[0040] Step 1: Dig out multiple pre-embedded holes at intervals on the slope. The diameter of the pre-embedded holes is the same as the length of the base 31. Then, compact the inside of the pre-embedded holes.

[0041] Step 2: Place the anchoring structure 3 at the bottom of the pre-embedded hole, expose the uppermost insert plate 36 of the support plate 35 in the pre-embedded hole, install the protective frame plate 1 at the top of the pre-embedded hole, and insert the anchor plate 102 into the slope by external force.

[0042] Step 3: Press down on the pressure rod 32, causing the pressure seat 33 to descend. When the pressure seat 33 descends, it causes the support plate 35 to expand outward, inserting the insertion plate 36 into the inner wall of the pre-embedded hole. The uppermost insertion plate 36 is inserted into the insertion hole 104, and at the same time, the anchor block 316 is inserted into the bottom of the pre-embedded hole. When the pressure seat 33 descends to the bottom, the locking plate 335 is engaged in the slot 312. Then, the pressure rod 32 is locked and fixed by rotating the locking disc 34.

[0043] Step 4: Install the protective net 2 between two adjacent protective frame plates 1. Tie the ropes at both ends of the protective net 2 to the first locking post 44 and the second locking post 101 respectively to complete the installation of the protective device.

[0044] Step 5: The protective net 2 intercepts the falling rocks and soil on the slope. When the protective net 2 is impacted, it opens outward. The buffer mechanism 4 can buffer the protective net 2, slow down the falling rocks and stop them.

[0045] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element 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 invention.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A slope protection device for rock face, characterized in that, include: Protective frame plate (1) and protective net (2), the protective net (2) is installed between two adjacent protective frame plates (1); An anchoring structure (3) is installed on the protective frame plate (1) to fix the protective frame plate (1) on the slope; The anchoring structure (3) includes a base (31) and a pressure bar (32). The base (31) is connected to the bottom of the protective frame plate (1). The base (31) is evenly connected to multiple sliders (38) along its circumference. A support plate (35) is fixedly connected to the slider (38). Multiple insert plates (36) are provided on the support plate (35). The pressure rod (32) passes through the protective frame plate (1). The lower end of the pressure rod (32) is fixedly connected to the pressure seat (33), which is used to drive the slider (38) to slide. The surface of the pressure rod (32) is threaded with a locking disc (34). The pressure seat (33) has a plurality of clamping plates (335) evenly arranged along its circumference. A trapezoidal block (310) is fixedly connected to the slider (38). The side of the trapezoidal block (310) facing the pressure seat (33) is set as an inclined surface. The inclined surface of the trapezoidal block (310) is provided with a groove (312) that engages with the clamping plate (335).

2. The rock face slope protection device according to claim 1, characterized in that, The pressure seat (33) has a sliding groove (334) that is slidably connected to the card plate (335). An elastic element (338) is fixedly connected between the card plate (335) and the sliding groove (334), and a guide block (337) is fixedly connected to the card plate (335).

3. The slope protection device for rock-cut surfaces according to claim 2, characterized in that, The upper surface of the pressure base (33) is provided with a rotating disk (331), the rotating disk (331) is threadedly connected to the pressure rod (32), the rotating disk (331) is provided with an arc-shaped hole (333) that is slidably connected to the guide block (337), and the pressure rod (32) is threadedly connected with a locking nut (332) for limiting the rotating disk (331).

4. The slope protection device for rock-cut surfaces according to claim 3, characterized in that, The trapezoidal block (310) has a limiting protrusion (311) on its inclined surface, and the card plate (335) has a limiting groove (336) that is slidably connected to the limiting protrusion (311).

5. A slope protection device for rock-cut surfaces according to claim 4, characterized in that, An anchor rod (314) is movably connected to the base (31), the anchor rod (314) passes through the base (31), a top block (313) is fixedly connected to the upper end of the anchor rod (314), a first spring (315) is connected to the surface of the anchor rod (314), and an anchor block (316) is fixedly connected to the lower end of the anchor rod (314).

6. A slope protection device for rock-cut surfaces according to claim 5, characterized in that, The lower surface of the protective frame plate (1) is provided with an annular retaining ring (103), and the annular retaining ring (103) is provided with a socket (104) that cooperates with the insert plate (36); multiple anchor plates (102) are fixedly connected to the lower surface of the protective frame plate (1).

7. A slope protection device for rock-cut surfaces according to claim 6, characterized in that, The base (31) is provided with a sliding hole (37) that is slidably connected to the slider (38), and the sliding holes (37) are provided with sliding rails (39) on both sides that are slidably connected to the slider (38).

8. A slope protection device for rock-cut surfaces according to claim 7, characterized in that, A pair of buffer mechanisms (4) are fixedly connected to the protective frame plate (1). The buffer mechanism (4) includes a rotating frame (41). One end of the rotating frame (41) is rotatably connected to the protective frame plate (1). A sliding rod (45) is fixedly connected to the rotating frame (41). A moving block (43) is slidably connected to the sliding rod (45). A guide rail (42) that is slidably connected to the moving block (43) is fixedly connected to the rotating frame (41). A second spring (46) is connected to the surface of the sliding rod (45). A first locking post (44) is fixedly connected to the moving block (43). A second locking post (101) is fixedly connected to the protective frame plate (1). Two ropes at the same end of the protective net (2) are respectively connected to the first locking post (44) and the second locking post (101).

9. A slope protection device for rock-cut surfaces according to claim 8, characterized in that, The buffer mechanism (4) further includes a sleeve seat (47), which is fixedly connected to the protective frame plate (1). A sleeve rod (48) is movably connected inside the sleeve seat (47). A third spring (49) is connected to the surface of the sleeve rod (48), and a hinge seat (410) is fixedly connected to one end of the sleeve rod (48). A connecting rod (411) is hinged between the hinge seat (410) and the rotating frame (41).

10. A method for protecting a rock-cut slope, utilizing a rock-cut slope protection device as described in claim 9, characterized in that, Includes the following steps: Step 1: Dig out multiple pre-embedded holes at intervals on the slope. The diameter of the pre-embedded holes is the same as the length of the base (31). Then, compact the inside of the pre-embedded holes. Step 2: Place the anchoring structure (3) at the bottom of the pre-embedded hole, expose the uppermost insert plate (36) of the support plate (35) in the pre-embedded hole, install the protective frame plate (1) at the top of the pre-embedded hole, and insert the anchor plate (102) into the slope by external force; Step 3: Press down on the pressure rod (32) to drive the pressure seat (33) down. When the pressure seat (33) descends, it drives the support plate (35) to expand outward and insert the insert plate (36) into the inner wall of the pre-embedded hole. The uppermost insert plate (36) is inserted into the insertion hole (104), and at the same time, the anchor block (316) is inserted into the bottom of the pre-embedded hole. When the pressure seat (33) descends to the bottom, the clamping plate (335) is engaged in the clamping groove (312). Then, the pressure rod (32) is locked and fixed by rotating the locking disc (34). Step 4: Install the protective net (2) between two adjacent protective frame plates (1), and tie the ropes at both ends of the protective net (2) to the first locking post (44) and the second locking post (101) respectively to complete the installation of the protective device; Step 5: The protective net (2) is used to intercept the falling rocks and soil on the slope. The protective net (2) opens outward when impacted, and the buffer mechanism (4) can buffer the protective net (2) to slow down and stop the falling rocks.

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