Slope protection device

Abstract

The invention relates to a side slope protection device, and belongs to the technical field of side slope protection, a protection net is wound on a rolling shaft, rolling wheels are coaxially fixed to the two ends of the rolling shaft, the side slope protection device further comprises a pair of first anchor pile components located at the top of a slope and a pair of second anchor pile components located at the bottom of the slope, and the first anchor pile component on each side directly faces the corresponding second anchor pile component; the first anchor pile component comprises a first anchor rod and an installation arm installed on the first anchor rod in a sliding mode, the installation arm can be fixed to the first anchor rod, a reel axially perpendicular to the slope is installed at the end, away from the first anchor rod, of the installation arm, and a guide rope is wound around the reel. A second anchor rod of the second anchor pile part is provided with a sliding part moving in the axial direction of the second anchor rod, the sliding part is provided with a connecting part connected with the guide rope and a locking part used for axially abutting against the end of the rolling shaft, the two sides of the end of the protective net are each connected with an inhaul cable, and the inhaul cables are connected with the installation arms. Construction is simple and efficient, later maintenance is convenient and timely, and both efficiency and reliability are considered.

Description

Technical Field

[0001] The present invention relates to the technical field of slope protection, and in particular to a slope protection device. Background Art

[0002] During the construction and operation of water conservancy and hydropower projects, the stability of the slope is of vital importance. Slope instability may not only lead to earth collapse and bury surrounding equipment and facilities, but may also affect the normal operation of water conservancy and hydropower projects, and even cause safety accidents, threatening the lives of workers. Existing slope protection methods have many shortcomings. For example, although traditional vegetation protection methods can prevent soil erosion to a certain extent, their protection effect is limited in cases of high-intensity rainfall or severe weathering of slope rocks. Simple retaining wall structures are expensive on the one hand, and cannot adapt well to the slight deformation of the slope on the other hand. Under the action of long-term external forces, the retaining wall may crack or even collapse, losing its protective function. Repairing it is very difficult and requires the reorganization of a series of manpower and material resources for re-casting and construction, which greatly affects the timeliness and convenience of slope protection construction.

[0003] Among the existing slope protection facilities, laying a protective net directly on the slope surface is a simple and effective form of protection. Its construction, installation and disassembly are relatively simple. However, in terms of construction, its disadvantage is that the protective net itself is relatively soft and difficult to quickly unfold on the slope surface, resulting in frequent wrinkles and curling during laying, which greatly affects the protection effect. In addition, due to the limitations of its structure and materials, the service life of the protective net itself is relatively short. Once local damage occurs, it is likely to continue to expand the damaged area due to insufficient load-bearing capacity, seriously affecting its effective protection performance. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a slope protection device to solve the problem in the prior art that it is difficult to balance the difficulty of installation and the timeliness and convenience of subsequent maintenance and replacement when protecting the slope.

[0005] The present invention is achieved through the following technical solutions:

[0006] A slope protection device comprises a protective net covering the slope surface, the protective net being wound on a roller, with rollers coaxially fixed at both ends of the roller; further comprising a pair of first anchor pile components located at the top of the slope and a pair of second anchor pile components located at the bottom of the slope, each pair of anchor pile components being arranged opposite to each other on the left and right, with the first anchor pile component on each side facing the second anchor pile component; the first anchor pile component comprises a first anchor rod and a mounting arm axially slidably mounted on the first anchor rod, the mounting arm being able to be fixed to the first anchor rod when it slides on the first anchor rod to a set position, and an end of the mounting arm facing away from the first anchor rod is equipped with an axially perpendicular anchor pile component. The guide rope is wound around the winding wheel on the slope; the second anchor pile component includes a second anchor rod fixed perpendicular to the slope, and a sliding part that moves along its axial direction is installed on the second anchor rod. The sliding part slides to a set position and can be fixed on the second anchor rod. The sliding part is provided with a connecting part connected to the guide rope, and a locking part for axially tightening the end of the roller. The straightened guide rope between the winding wheel and the connecting part serves as a guide rail for the roller when rolling down from the top of the slope to the bottom of the slope; a cable is connected to each side of the end of the protective net, and the cable is connected to the mounting arm.

[0007] Furthermore, the first anchor pile component also includes a pair of locking nuts, and one end of the mounting arm has a ring, which is coaxially sleeved on the first anchor rod between the two locking nuts. The ring is axially slidably matched with the first anchor rod and can be clamped by the two locking nuts and fixed on the first anchor rod.

[0008] Furthermore, a strip groove is provided on the first anchor rod along its length direction, and a sliding key is fixed to the inner wall of the collar, and the sliding key is installed in a sliding fit with the strip groove.

[0009] Furthermore, a fixing block is fixed on the mounting arm, and a threading hole is provided in the fixing block, and the central hole wall of the threading hole is recessed toward one side to form an inner expansion groove; a fastening bolt is provided on the side of the fixing block away from the inner expansion groove, and the end of the fastening bolt is an arc-shaped end, which pushes the cable passing through the threading hole into the inner expansion groove to fix the cable in the fixing block.

[0010] Furthermore, a swing arm is rotatably mounted on the mounting arm between the fixed block and the first anchor rod, and a pulley is rotatably mounted on one side of the end of the swing arm. The lower side of the pulley is for the cable to pass around, and exerts a downward pressure on the cable to tighten the protective net.

[0011] Furthermore, a positioning collar and a movable pressure ring spaced opposite to the positioning collar are fixed on the mounting arm, and a locking screw ring is coaxially fixed to one end of the movable pressure ring away from the positioning collar, and the locking screw ring is threadedly sleeved with the mounting arm.

[0012] Furthermore, the ring hole of the positioning collar has an annular step at one end close to the locking screw ring. When the positioning collar presses the swing arm, the positioning collar moves to a position where the step surface of the annular step is flush with the end of the thread on the mounting arm.

[0013] Furthermore, the sliding part includes a movable plate axially mounted on the second anchor rod, and the upper and lower ends of the movable plate are respectively provided with locking nuts to fix the movable plate; the locking part includes an L-shaped crank arm and a tightening bolt, the crank arm is fixed to one side of the movable plate, a section of the crank arm perpendicular to the roller is located outside the end of the roller, and the tightening bolt is installed, the tightening bolt has a threaded section near the nut and a light column section near the free end, the threaded section is threadedly connected to the crank arm, and the light column section can be screwed into the socket at the end of the roller to axially tighten and fix the roller; the movable plate is provided with the connecting part facing the roller.

[0014] Furthermore, a limiting disk similar to a cutting disc is coaxially fixed at each end of the roller, and both ends of the cylindrical protective net are in contact with the end faces of the limiting disk. When the protective net is unfolded along the slope surface, the installation height of the movable disk and the mounting arm can be adjusted so that the protective net is pressed onto the slope surface and the limiting disk is wedged into the slope.

[0015] Furthermore, two adjacent protective nets wrapped around the roller are connected by two cables, and the cables are provided with pulling holes at the ends, and the pulling holes can be connected to the traction rope so as to cut the two cables at the lower end of the protective net that has been laid on the slope, tie the traction rope to the pulling holes, and after raising the movable plate to the set height and loosening the tightening bolts, pull the roller toward the top of the slope to rotate in place and release a new protective net.

[0016] The beneficial effects of the present invention are:

[0017] The slope protection device uses two anchor components to automatically roll a roller wrapped with a protective net downward according to the slope's inclination, evenly laying it on the slope. The cable and roller at the top of the protective net are then fixed and adjusted to a suitable height, allowing the protective net to fully contact the slope surface and provide protection. Compared to traditional retaining walls or protective net installations, the device is significantly simpler to install and construct. Furthermore, the present invention not only automatically and efficiently lays the protective net, but also allows for evenly spreading the net on the slope surface. Furthermore, the device also allows for convenient replacement. If the protective net is damaged, the corresponding cable, which has been cut, is pulled, and the roller at the bottom of the slope rotates to reverse the direction and lay the protective net toward the top of the slope. This effectively avoids the problem of slope protection nets being easily damaged and difficult to maintain and replace in a timely manner. The device can quickly and easily replace the old protective net, largely offsetting its weak load-bearing capacity and short service life, allowing for timely replacement. Furthermore, the existing protective net, acting as an auxiliary inner net covering the slope, still provides enhanced protection.

[0018] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a front view of the first anchor component of the present invention;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure at point A in the middle;

[0022] Figure 4 It is a schematic end view of the movable pressure ring of the present invention;

[0023] Figure 5 A schematic top view of the first anchor component of the present invention;

[0024] Figure 6 This is a schematic diagram of the fixed installation structure of the cable in the fixed block of the present invention;

[0025] Figure 7 A schematic top view of the second anchor component of the present invention;

[0026] Figure 8 This is a structural diagram of a tightening bolt;

[0027] Figure 9Schematic diagram of several protective nets;

[0028] Figure 10 This is a schematic diagram of the end face of a protective cylinder with a roller installed.

[0029] In the figure: protective net 1, roller 2, first anchor pile component 3, mounting arm 301, first anchor rod 302, locking nut 303, fixing block 304, fastening bolt 305, swing arm 306, pulley 307, positioning collar 308, movable pressure ring 309, locking screw ring 310, sleeve 311, sliding key 312, strip groove 313, annular step 314, second anchor pile component 4, connecting part 401, crank arm 402, movable disk 403, tightening bolt 404, threaded section 40401, light column section 40402, second anchor rod 405, cable 5, pulling hole 501, winding wheel 6, guide rope 7, stop nut 8, limit plate 9, protective tube 10, narrow gap 11. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] See also Figure 1 The present invention provides a technical solution: a slope protection device, mainly comprising a protection net 1 covering the slope surface, the protection net 1 is wound on a roller 2, and rollers with grooves are coaxially fixed at both ends of the roller 2. At the same time, the protection device also includes a pair of first anchor pile components 3 located at the top of the slope, and a pair of second anchor pile components 4 located at the bottom of the slope. Each pair of anchor pile components are arranged opposite to each other, and the first anchor pile component 3 on each side is opposite to the second anchor pile component 4. Specifically, the first anchor pile component 3 in this embodiment, such as Figure 2-Figure 5As shown, the mounting arm 301 includes a first anchor rod 302 and an axially slidably mounted on the first anchor rod 302. The bottom end of the first anchor rod 302 is fixed to the slope, and the mounting arm 301 can be fixed to the first anchor rod 302 when it slides to a set position on the first anchor rod 302. In addition, a winding wheel 6 is mounted on the end of the mounting arm 301 facing away from the first anchor rod 302, with the axial direction perpendicular to the slope surface. That is, the axial direction of the winding wheel 6 is perpendicular to the slope surface. A guide rope 7 is wound around the winding wheel 6. When in use, it can be pulled out to a corresponding length for connection with the second anchor pile component 4. A stop nut 8 can be threadedly mounted on the wheel shaft of the winding wheel 6 to secure the winding wheel 6 when the guide rope 7 is connected. The second anchor component 4 includes a second anchor rod 405 fixed perpendicular to the slope. The bottom end of the second anchor rod 405 is fixed within the slope. A sliding portion is mounted on the second anchor rod 405, which can move axially. When the sliding portion slides to a set position, it can be fixed to the second anchor rod 405. The sliding portion is also provided with a connecting portion 401 for connecting to the guide rope 7 and a locking portion for axially tightening the end of the roller 2. During installation, the stretched guide rope 7 between the winding wheel 6 and the connecting portion 401 serves as a guide for the roller as it rolls down the slope, allowing the roller 2, wrapped with the protective net 1, to roll downward along the slope, automatically and neatly spreading the protective net 1 across the corresponding slope area. To facilitate the flattening of the protective net 1, in this embodiment, a cable 5 is connected to each side of the end of the protective net 1. These cables 5 are connected to corresponding mounting arms 301 to secure the initial end of the protective net 1.

[0034] In this embodiment, Figure 2 As shown, the first anchor component 3 also includes a pair of locking nuts 303. One end of the mounting arm 301 has a collar 311. The collar 311 is a circular ring structure. The collar 311 is coaxially mounted on the first anchor rod 302 between the two locking nuts 303. The collar 311 and the first anchor rod 302 axially slide together to reach a suitable height position, thereby positioning the guide rope 7 in a suitable tilted position and allowing the protective net 1 to be laid flat downward at an optimal tilt angle. In the above embodiment, when the collar 311 and its mounting arm 301 reach the corresponding installation height position, they are axially clamped by the two locking nuts 303, thereby being fixed to the first anchor rod 302 to achieve the above-mentioned function.

[0035] In this embodiment, in order to allow the installation arm 301 to move vertically without rotating, it can better cooperate with the second anchor component 4. Figure 2 A strip groove 313 is provided on the first anchor rod 302 along its length direction. The cross section of the strip groove 313 is rectangular. A sliding key 312 is fixed to the inner wall of the ring 311. The sliding key 312 is installed in a sliding fit with the strip groove 313 to guide the installation arm 301 to move vertically without rotating.

[0036] In this embodiment, Figure 5 As shown, a fixing block 304 is fixed on the mounting arm 301. The fixing block 304 has a threading hole. In particular, the hole wall of the center of the threading hole is recessed toward one side, thereby forming a U-shaped inner expansion groove. At the same time, a fastening bolt 305 is provided on the side of the fixing block 304 away from the inner expansion groove. The end of the fastening bolt 305 is an arc-shaped end. The arc-shaped end pushes the cable 5 passing through the threading hole into the inner expansion groove, as shown in FIG. Figure 6 As shown, the cable 5 is firmly fixed in the fixed block 304, that is, it is reliably and detachably fixed to the first anchor pile component 3. As an optimized detail of the specific implementation structure, a swing arm 306 is also rotatably sleeved on the mounting arm 301 between the fixed block 304 and the first anchor rod 302, that is, the team member section of the mounting arm 301 can be cylindrical to rotatably install the swing arm 306. Specifically, a pulley 307 is rotatably installed on one side of the end of the swing arm 306, and the lower side of the pulley 307 is for the cable 5 to bypass, and has a downward pressure on the cable 5. While limiting the position of the cable 5, the protective net 1 can also be tightened to allow the protective net 1 to automatically lay flat downward. In practice, the length of each protective net 1 is designed according to the straight-line distance from the top to the bottom of the slope to adapt to the size of the slope surface. In the above embodiments, as Figure 5 As shown, a positioning collar 308 is fixed on the mounting arm 301, and the positioning collar 308 and the mounting arm 301 can be integrally formed. The mounting arm 301 is also provided with a movable pressure ring 309 spaced opposite to the positioning collar 308. This movable pressure ring 309 can slide along the length direction of the mounting arm 301 and can also rotate on the mounting arm 301. The end of the movable pressure ring 309 away from the positioning collar 308 is coaxially fixed with a locking screw 310. The locking screw 310 is threadedly sleeved on the mounting arm 301, and one end of the above-mentioned swing arm 306 is sleeved on the mounting arm 301 between the positioning collar 308 and the movable pressure ring 309. During use, the locking screw 310 can be tightened to fix the swing arm 306 on the mounting arm 301, thereby fixing the position of the pulley 307. When the position of the above-mentioned pulley 307 needs to be adjusted, the locking screw 310 can be slightly loosened. In order to avoid friction between the thread and the end of the swing arm 306, as shown in FIG. Figure 3-Figure 4 As shown, the ring hole of the positioning collar 308 in this embodiment is close to one end of the locking screw ring 310 and has an annular step 314. When the positioning collar 308 presses the swing arm 306, the positioning collar 308 moves to a position where the step surface of the annular step 314 is flush with the end of the thread on the mounting arm 301, so that the part of the mounting arm 301 where the movable pressure ring 309 is sleeved has no threads that hinder rotation.

[0037] In this embodiment, Figure 7As shown, the sliding portion mentioned above specifically includes a movable plate 403 axially mounted on the second anchor rod 405. The mounting structure of the movable plate 403 is similar to the above-mentioned collar 311. Locking nuts 303 are also provided at the upper and lower ends of the movable plate 403 to fix the movable plate 403. The above-mentioned locking portion includes an L-shaped crank arm 402 and a tightening bolt 404. Specifically, a crank arm 402 is fixed to one side of the movable plate 403. A section of the crank arm 402 is perpendicular to the roller 2 and is located outside the end of the roller 2. A tightening bolt 404 is also installed perpendicularly to this section. The tightening bolt 404 here has a structure as shown in FIG. Figure 8 As shown, the part close to the nut is a threaded section 40401, and the part close to the free end is a light column section 40402. The threaded section 40401 is threadedly connected to the crank arm 402 to achieve threaded fixation, and the light column section 40402 can be screwed into the socket (not shown in the figure) at the end of the roller 2 when the threaded pair moves. This socket is a blind hole with a suitable depth. The blind hole is arranged along the axial direction of the roller 2, so that when the tightening bolt 404 is tightened, the light column section 40402 is inserted into the socket and contacts the bottom of the socket, thereby tightening and fixing the roller 2 axially. As for the above-mentioned connecting portion 401, it can be a structure that can tie the cable 5, and the connecting portion 401 can be arranged on the side of the movable disk 403 facing the roller.

[0038] As specific implementation details, such as Figure 7 As shown, at both ends of the roller 2 in this embodiment, there are respectively coaxially fixed with a limiting disk 9 similar to a cutting knife disk, and the two ends of the cylindrical protective net 1 are in contact with the end faces of the limiting disk 9, so that the protective net 1 can be better spread out. When the protective net 1 is unfolded downward along the slope surface, the installation height of the above-mentioned movable disk 403 and the installation arm 301 can be adjusted so that the protective net 1 is pressed on the slope surface, thereby forming a good protective effect on the slope, and the disk edge of the limiting disk 9 can be easily wedged into the slope, which not only avoids the existence of the limiting disk 9 affecting the contact between the protective net 1 and the slope surface, but also improves the fixed installation effect of the roller 2 on the slope.

[0039] In addition, in this embodiment, Figure 9 As shown, each two adjacent protective nets 1 wound on the roller 2 are connected by two cables 5, and a hole 501 is provided at the end of the cable 5. When making it, a protective film can be wrapped around each protective net 1, or a shape consistent with the roller 2 can be designed, such as Figure 10The cylindrical protective tube 10 shown here serves to protect the unused protective net 1. The sidewall of this protective tube 10 has a narrow slit 11 through which the protective net 1 can be pulled out. Of course, other existing technical means can also be used to cover and protect the undeployed protective net 1. More specifically, the aforementioned pulling hole 501 can be connected to a rope body such as a wire rope or a pull rope, so that if the protective net 1 is severely damaged after being used for a long time and affects the protection of the slope, the two pull ropes 5 at the lower end of the protective net 1 already laid on the slope can be directly cut, that is, cut near the bottom edge of the deployed protective net 1. Then, the pull rope can be tied to the pulling hole 501 and pulled upward. It is worth noting that before pulling the traction rope, it is necessary to loosen the locking nut 303, then raise the movable plate 403 to the set height, let the limit plate 9 leave the slope, and the roller 2 with the protective net 1 around it rise to a suitable height where it can rotate freely. Then loosen the tightening bolt 404 to release the roller 2 so that the roller 2 can rotate freely. In this way, by pulling the traction rope again, a new protective net 1 can be released toward the top of the slope, and the newly cut cable 5 can be fixed on the fixed block 304. If necessary, the height of the mounting arm 301 can be adjusted by loosening the locking nut 303 of the first anchor component 3 so that the newly laid protective net 1 can be in the best position. When pulling the traction rope, the traction rope can pass around the pulley 307, making it faster and more labor-saving to lay the new protective net 1 from bottom to top.

[0040] In the above description of the present invention, it should be noted that the terms "one side," "the other side," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0041] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A slope protection device, comprising a protection net (1) covering the slope surface, characterized in that: The protective net (1) is wound around a roller (2), and rollers are coaxially fixed at both ends of the roller (2); it also includes a pair of first anchor pile components (3) located at the top of the slope and a pair of second anchor pile components (4) located at the bottom of the slope, each pair of anchor pile components are arranged opposite to each other, and the first anchor pile component (3) on each side is opposite to the second anchor pile component (4); The first anchor pile component (3) comprises a first anchor rod (302) and a mounting arm (301) axially slidably mounted on the first anchor rod (302); the mounting arm (301) can be fixed on the first anchor rod (302) when it slides to a set position on the first anchor rod (302); a winding wheel (6) axially perpendicular to the slope surface is mounted on one end of the mounting arm (301) away from the first anchor rod (302); a guide rope (7) is wound around the winding wheel (6); the second anchor pile component (4) comprises a vertical A second anchor rod (405) is fixed to the slope surface, and a sliding portion is installed on the second anchor rod (405) that moves along its axial direction. The sliding portion can be fixed on the second anchor rod (405) when it slides to a set position. The sliding portion is provided with a connecting portion (401) connected to the guide rope (7) and a locking portion for axially tightening the end of the roller (2). The straightened guide rope (7) located between the winding wheel (6) and the connecting portion (401) serves as a guide rail when the roller rolls down from the top of the slope to the bottom of the slope. A pull rope (5) is connected to each of the two sides of the end of the protective net (1), and the pull rope (5) is connected to the installation arm (301).

2. The slope protection device according to claim 1, characterized in that: The first anchor pile component (3) further includes a pair of locking nuts (303); one end of the mounting arm (301) has a collar (311); the collar (311) is coaxially sleeved on the first anchor rod (302) between the two locking nuts (303); the collar (311) is axially slidably engaged with the first anchor rod (302) and can be clamped by the two locking nuts (303) to be fixed on the first anchor rod (302).

3. The slope protection device according to claim 2, characterized in that: A strip groove (313) is provided on the first anchor rod (302) along its length direction, and a sliding key (312) is fixed to the inner wall of the collar (311), and the sliding key (312) is installed in a sliding fit with the strip groove (313).

4. The slope protection device according to claim 1, characterized in that: A fixing block (304) is fixed on the mounting arm (301), and a threading hole is provided in the fixing block (304), and the hole wall in the center of the threading hole is recessed toward one side to form an inner expansion groove; a fastening bolt (305) is provided on the side of the fixing block (304) away from the inner expansion groove, and the end of the fastening bolt (305) is an arc-shaped end, and the arc-shaped end pushes the cable (5) passing through the threading hole into the inner expansion groove to fix the cable (5) in the fixing block (304).

5. The slope protection device according to claim 4, characterized in that: A swing arm (306) is rotatably mounted on the mounting arm (301) between the fixed block (304) and the first anchor rod (302). A pulley (307) is rotatably mounted on one side of the end of the swing arm (306). The lower side of the pulley (307) allows the cable (5) to pass around and exerts a downward pressure on the cable (5) to tighten the protective net (1).

6. The slope protection device according to claim 5, characterized in that: A positioning collar (308) and a movable pressure ring (309) spaced apart from the positioning collar (308) are fixed on the mounting arm (301); a locking screw ring (310) is coaxially fixed to one end of the movable pressure ring (309) away from the positioning collar (308); the locking screw ring (310) is threadedly sleeved on the mounting arm (301); the movable pressure ring (309) is axially slidably connected to the mounting arm (301) and can rotate relative to the mounting arm (301); one end of the swing arm (306) is rotatably sleeved on the mounting arm (301) between the positioning collar (308) and the movable pressure ring (309).

7. The slope protection device according to claim 6, characterized in that: The annular hole of the positioning collar (308) is adjacent to one end of the locking screw ring (310) and has an annular step (314). When the positioning collar (308) presses the swing arm (306), the positioning collar (308) moves to a position where the step surface of the annular step (314) is flush with the end of the thread on the mounting arm (301).

8. The slope protection device according to claim 1, characterized in that: The sliding portion includes a movable plate (403) axially mounted on the second anchor rod (405), and the upper and lower ends of the movable plate (403) are each provided with a locking nut (303) to fix the movable plate (403); the locking portion includes an L-shaped crank arm (402) and a tightening bolt (404), and the crank arm (402) is fixed on one side of the movable plate (403), and the crank arm (402) is perpendicular to the roller (2) and is located between the ends of the roller (2). The outer surface of the roller (2) is provided with the tightening bolt (404), the tightening bolt (404) is provided with a threaded section (40401) near the nut and a light column section (40402) near the free end, the threaded section (40401) is threadedly connected to the crank arm (402), and the light column section (40402) can be screwed into the socket at the end of the roller (2) to tighten and fix the roller (2) axially; the movable disk (403) is provided with the connecting portion (401) on the side facing the roller.

9. The slope protection device according to claim 8, characterized in that: A limiting disk (9) similar to a cutting disc is coaxially fixed to each of the two ends of the roller (2), and the two ends of the cylindrical protective net (1) are in contact with the end faces of the limiting disk (9). When the protective net (1) is unfolded along the slope surface, the installation height of the movable disk (403) and the installation arm (301) can be adjusted so that the protective net (1) is pressed onto the slope surface and the limiting disk (9) is wedged into the slope.

10. The slope protection device according to claim 9, characterized in that: Two adjacent protective nets (1) wound around the roller (2) are connected by two cables (5), and the cables (5) are provided with a pulling hole (501) at the end thereof. The pulling hole (501) can be connected to a traction rope so as to cut the two cables (5) at the lower end of the protective net (1) already laid on the slope, tie the traction rope to the pulling hole (501), and after raising the movable plate (403) to a set height and loosening the tightening bolt (404), pull the roller (2) toward the top of the slope to rotate in place and release a new protective net (1).

Images