A tunnel portal slope reinforcement device

Abstract

The utility model relates to the technical field of side slope reinforcement, disclose a kind of tunnel mouth side slope reinforcing device, including protective frame, the top of the protective frame is fixedly connected with mounting plate in upper and lower sides, the outer wall of the protective frame is provided with connecting mechanism, the outer wall rear side of the protective frame is provided with fixed structure, the outside of two the mounting plate is provided with reinforcing assembly, the inner wall of the protective frame is provided with blocking assembly;The connecting mechanism includes two connecting seats, the left side of two The connecting seat is fixedly connected on the outer wall right end upper and lower sides of the protective frame respectively.In the utility model, fixed seat cooperates with connecting seat, utilizes plug-in rod, spring and rotary groove, realize the quick connection between protective frame and the angle can be flexibly adjusted, solve the problem that the protective frame cannot be flexibly adjusted angle, cannot closely adhere to slope face, reinforcing effect is unstable in the turning of prior art, blocking assembly overall guarantee the stability and security of side slope reinforcement, improve overall reinforcing effect.

Description

Technical Field

[0001] This utility model relates to the field of slope reinforcement technology, and in particular to a slope reinforcement device for tunnel entrances. Background Technology

[0002] Tunnel entrance slope reinforcement devices are engineering facilities used in the field of tunnel engineering, specifically designed to enhance the stability of the slopes around tunnel entrances. Tunnel entrance slopes are prone to landslides and collapses due to various factors such as excavation disturbance, changes in geological conditions, weathering, rainfall, and earthquakes, threatening the safety of the tunnel structure and the lives and property of passing vehicles and pedestrians.

[0003] Traditional tunnel entrance slope reinforcement methods mainly consist of anchor cables, anchor rods, concrete frame beams, and protective netting. In practice, numerous holes must first be drilled on the slope according to design requirements to install the anchor cables and anchor rods. This requires drilling a large number of anchor cable holes in advance, and the drilling operation is not only demanding specialized equipment but also extremely time-consuming. Existing technology has improved tunnel entrance slope reinforcement devices by developing a prefabricated reinforcement component that integrates anchor cables, anchor rods, and concrete frame beams. During construction, the prefabricated component is simply transported to the site and installed via a quick connection method, significantly reducing time-consuming processes such as on-site drilling and concrete pouring. Furthermore, the use of new anchoring materials and technologies improves anchoring efficiency and shortens construction time. However, in actual use, due to the unevenness of the slope surface and the inability to flexibly adjust the angle of the protective frame at bends, the protective frame may not fit snugly against the slope, leading to unstable reinforcement results. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a tunnel entrance slope reinforcement device, which aims to improve the problem in the prior art where the protective frame cannot flexibly adjust its angle at the bend, resulting in the protective frame not being able to fit tightly against the slope and thus causing unstable reinforcement effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tunnel entrance slope reinforcement device, comprising a protective frame, wherein mounting plates are fixedly connected to the top and bottom sides of the protective frame, a connecting mechanism is provided on the outer wall of the protective frame, a fixing structure is provided on the rear side of the outer wall of the protective frame, reinforcement components are provided on the outer sides of the two mounting plates, and a barrier component is provided on the inner wall of the protective frame; the connecting mechanism comprises two connecting seats, the left sides of the two connecting seats are respectively fixedly connected to the upper and lower sides of the right end of the outer wall of the protective frame, and a rotating groove is provided on the adjacent side of the two connecting seats; a fixing seat is fixedly connected to the left side of the outer wall of the protective frame, and sliding grooves are provided on the upper and lower sides of the outer wall of the fixing seat; springs are fixedly connected to the inner walls of the two sliding grooves, and insert rods are fixedly connected to the opposite sides of the two springs, and the two insert rods are slidably connected to the corresponding rotating grooves.

[0006] The above technical solution works as follows: When multiple protective frames need to be connected, first align the fixed seat of one protective frame with the connecting seat of another protective frame, then push the protective frame so that the fixed seat is close to the connecting seat. At this time, the insert rod on the fixed seat contacts the connecting seat. Due to the special structure of the connecting seat, the insert rod is pressed and moves into the sliding groove, compressing the spring. When the insert rod moves to be aligned with the rotating groove, the spring force pushes the insert rod into the rotating groove, thus connecting the two protective frames. Furthermore, because the insert rod and the rotating groove can be slidably connected, the angle between the connected protective frames can be flexibly adjusted to fit the different slope shapes of the tunnel entrance slope.

[0007] As a further description of the above technical solution:

[0008] The fixing structure includes multiple conical sleeves. The front sides of the outer walls of the multiple conical sleeves are respectively fixedly connected to the four corners of the rear side of the outer wall of the protective frame. The inner walls of the multiple conical sleeves are rotatably connected to multiple rotating rods. The outer walls of the multiple conical sleeves are provided with reserved holes I. The rear sides of the outer walls of the multiple rotating rods are fixedly connected to conical feet. The adjacent sides of the multiple rotating rods are provided with threaded grooves. The four corners of the outer wall of the protective frame are provided with reserved holes II. The inner walls of the multiple reserved holes II are slidably connected to lead screws. The multiple lead screws are respectively threadedly connected to the corresponding rotating rods. The front ends of the multiple lead screws are fixedly connected to limit plates. The outer walls of the multiple limit plates are provided with multiple insertion holes.

[0009] The above technical solution involves the following steps: When installing the protective frame, the conical sleeves at the four corners on the rear side of its outer wall are positioned. Through the first pre-drilled hole, a tool is inserted into the threaded groove of the rotating rod to rotate it, causing the connected conical feet to change their angle for better fit against the slope. Subsequently, the lead screw is inserted through the second pre-drilled hole and threadedly connected to the rotating rod. As the lead screw is screwed in, the front limiting plate approaches the protective frame, limiting the screw's insertion depth. Using the insertion hole, an auxiliary tool can be used to further tighten the lead screw, ensuring a tight fit between the rotating rod and the lead screw, allowing the conical feet to penetrate deep into the slope, enhancing the stability of the protective frame on the slope, and ensuring the device is firmly fixed to the slope.

[0010] As a further description of the above technical solution:

[0011] The barrier assembly includes a support net, an elastic pad is fixedly connected to the rear side of the outer wall of the support net, and an earthwork cloth is fixedly connected to the rear side of the outer wall of the elastic pad.

[0012] Through the above technical solution: when the barrier components are working, the support net first blocks large pieces of soil, the elastic pad buffers the impact, and the soil cloth prevents the leakage of fine particles, thus jointly protecting the slope from soil falling.

[0013] As a further description of the above technical solution:

[0014] The reinforcement component includes multiple anchor rods. Multiple through holes are provided on the left and right sides of the outer walls of the two mounting plates. The multiple anchor rods are slidably connected to the corresponding through holes. An anchor is slidably connected to the front end of each of the multiple anchor rods.

[0015] Through the above technical solution: when the reinforcement component is working, the anchor rod passes through the perforation of the mounting plate, and the front end is fixed to the slope rock mass by the anchor, which enhances the stability of the connection between the protective frame and the slope.

[0016] As a further description of the above technical solution:

[0017] The protective frame has two grooves at the top front end of its outer wall. The inner walls of the two grooves are rotatably connected to rotating seats. The outer walls of the two rotating seats are each provided with a lifting hole in the middle.

[0018] With the above technical solution: when installing the protective frame, the lifting equipment rope passes through the lifting hole on the rotating seat, and the rotating seat rotates in the groove, which makes it easy to adjust the position and angle of the protective frame.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the protective frame has multiple threaded holes on the front side, and the inner walls of the multiple threaded holes are threaded with threaded rods, and the front ends of the multiple threaded rods are fixedly connected with pipe clamps.

[0021] The above technical solution involves rotating the threaded rod to engage with the threaded hole on the front side of the outer wall of the protective frame, thereby moving the front-end pipe clamp and fixing the pipe.

[0022] As a further description of the above technical solution:

[0023] Multiple conical protrusions are fixedly connected to the rear side of the outer wall of the protective frame, and the spacing between adjacent conical protrusions is equal.

[0024] The above technical solution involves inserting equally spaced conical protrusions into the slope soil around the rear side of the protective frame during installation. The conical structure increases friction and stabilizes the protective frame.

[0025] As a further description of the above technical solution:

[0026] The diameters of the two insertion rods are equal to the inner diameters of the two rotating slots, and the right ends of adjacent sides of the two connecting seats are beveled.

[0027] Through the above technical solution: when connecting the protective frame, the angled guide rod slides into the rotating groove. Because its diameter is equal to the inner diameter of the rotating groove, the connection is stable and can be rotated flexibly.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the fixed seat and the connecting seat cooperate, and the insertion rod, spring and rotating groove are used to realize the quick connection between the protective frames and the angle can be flexibly adjusted. This solves the problems of the existing technology that the protective frame cannot be flexibly adjusted at the turning point, cannot be closely attached to the slope, and the reinforcement effect is unstable. At the same time, the support net, elastic pad and earthwork cloth of the barrier component cooperate in sequence to protect the slope from initial barrier and impact buffering to prevent fine particle leakage, and comprehensively ensure the stability and safety of the slope reinforcement, and improve the overall reinforcement effect.

[0030] 2. In this utility model, the conical sleeve cooperates with the rotating rod to flexibly adjust the angle of the conical foot, so that it fits the slope better, increases friction, and solves the problem that the protective frame is difficult to fix tightly to the slope. The screw rod and the rotating rod are threaded together, and the limiting plate restricts the screwing depth. The insertion hole facilitates tightening and enhances the connection firmness. Overall, it effectively enhances the stability of the protective frame on the slope, prevents displacement due to external forces, provides reliable reinforcement and protection for the slope at the tunnel entrance, and improves the situation of unstable fixing of the protective frame in the prior art. Attached Figure Description

[0031] Figure 1 This is a perspective view of a tunnel entrance slope reinforcement device proposed in this utility model;

[0032] Figure 2 This is a front view of a tunnel entrance slope reinforcement device proposed in this utility model;

[0033] Figure 3 This is a partial structural cross-sectional view of the fixing seat of a tunnel entrance slope reinforcement device proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the fixing structure of a tunnel entrance slope reinforcement device proposed in this utility model;

[0035] Figure 5 This is a cross-sectional view of the conical sleeve of a tunnel entrance slope reinforcement device proposed in this utility model;

[0036] Figure 6 This is a partial structural breakdown diagram of a tunnel entrance slope reinforcement device proposed in this utility model;

[0037] Figure 7 This is a schematic diagram of the reinforcement components of a tunnel entrance slope reinforcement device proposed in this utility model.

[0038] Legend:

[0039] 1. Protective frame; 2. Connecting mechanism; 201. Connecting seat; 202. Rotating groove; 203. Fixed seat; 204. Sliding groove; 205. Spring; 206. Insert rod; 3. Fixing structure; 301. Conical sleeve; 302. Rotating rod; 303. Reserved hole one; 304. Conical foot; 305. Threaded groove; 306. Reserved hole two; 307. Screw rod; 308. Limiting plate; 309. Insertion hole; 4. Mounting plate; 5. Barrier assembly; 501. Support net; 502. Elastic pad; 503. Earthwork cloth; 6. Reinforcement assembly; 601. Anchor rod; 602. Through hole; 603. Anchor; 7. Groove; 8. Rotating seat; 9. Lifting hole; 10. Threaded hole; 11. Threaded rod; 12. Pipe clamp; 13. Conical protrusion. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Reference Figure 1 , Figure 3 and Figure 6This utility model provides an embodiment of a tunnel entrance slope reinforcement device, comprising a protective frame 1, which serves as the main frame of the entire reinforcement device, providing an installation foundation for other components and directly protecting the tunnel entrance slope. Mounting plates 4 are fixedly connected to the top and bottom sides of the protective frame 1 for connecting reinforcement components 6, enhancing the connection stability between the protective frame 1 and the slope. A connecting mechanism 2 is provided on the outer wall of the protective frame 1 for connecting multiple protective frames 1 and adjusting their angles to adapt to tunnel entrance slopes of different shapes. A fixing structure 3 is provided on the rear side of the outer wall of the protective frame 1 for firmly fixing the protective frame 1 to the slope, ensuring the stability of the entire reinforcement device. Reinforcement components 6 are provided on the outer sides of the two mounting plates 4. To further strengthen the connection between the protective frame 1 and the slope and improve the reinforcement effect, the inner wall of the protective frame 1 is equipped with a barrier component 5 to prevent soil from falling from the slope and ensure the safety of the tunnel entrance. The connecting mechanism 2 includes two connecting seats 201. The left sides of the two connecting seats 201 are fixedly connected to the upper and lower sides of the right end of the outer wall of the protective frame 1, respectively, for cooperation with the fixed seats 203 on other protective frames 1 to realize the connection between the protective frames 1. The adjacent sides of the two connecting seats 201 are provided with rotating grooves 202 for sliding connection with the insert rod 206, so that the protective frames 1 can rotate relative to each other after connection to realize angle adjustment. The left side of the outer wall of the protective frame 1 is fixedly connected with a fixed seat 203, corresponding to the connecting seat 201, to complete the protective frame 1. The connection between the two components is achieved by providing sliding grooves 204 on both the upper and lower sides of the outer wall of the fixed base 203, allowing the insertion rod 206 to slide and extend under external force. Springs 205 are fixedly connected to the inner walls of both sliding grooves 204, providing a restoring force for the insertion rod 206, ensuring it maintains its initial position when no external force is applied. Insertion rods 206 are fixedly connected to the opposite sides of the two springs 205. When connecting the protective frame 1, the insertion rods 206 cooperate with the rotating groove 202 to achieve quick connection and angle adjustment between the protective frames 1. The two insertion rods 206 are slidably connected to their corresponding rotating grooves 202. The barrier assembly 5 includes a support net 501, used to prevent large soil blocks from falling from the slope, providing a basic barrier function. An elastic pad 502 is fixedly connected to the rear side of the outer wall of the support net 501, which can buffer the impact force when the soil falls, protect the support net 501 and enhance the barrier effect. An earthwork cloth 503 is fixedly connected to the rear side of the outer wall of the elastic pad 502 to prevent the leakage of small soil particles, further improve the barrier function and ensure the safety of the tunnel entrance slope reinforcement process. The diameter of the two insert rods 206 is equal to the inner diameter of the two rotating grooves 202 to ensure the fitting accuracy between the insert rods 206 and the rotating grooves 202, so that the protective frame 1 can rotate smoothly after connection and the angle can be adjusted accurately. The right ends of the adjacent sides of the two connecting seats 201 are beveled to facilitate the smooth entry of the insert rods 206 into the rotating grooves 202 during connection and reduce the resistance during the connection process.

[0042] Specifically, the protective frame 1, as the main structure, provides the basic framework for the entire device, supports other components, and protects the slope. The mounting plates 4 fixed to its top and bottom sides are used to connect the reinforcing components 6, enhancing the stability of the protective frame 1. Two connecting seats 201 of the connecting mechanism 2 are fixed to the upper and lower right sides of the outer wall of the protective frame 1, cooperating with the fixed seat 203 on the left side of the protective frame 1 to achieve connection between the protective frames 1. A rotating groove 202 on the adjacent side of the connecting seat 201 slides into the insert rod 206 connected to the spring 205 in the sliding groove 204 of the fixed seat 203. The beveled treatment on the right end of the adjacent side of the connecting seat 201 guides the insert rod 206 to slide smoothly and compress the spring 205 during connection. When the insert rod 206 aligns with the rotating groove 202, the spring... Spring 205 pushes the insert rod 206 into the rotating groove 202 for quick connection. The diameter of the insert rod 206 is equal to the inner diameter of the rotating groove 202, allowing the protective frame 1 to rotate flexibly after connection to adapt to different slope bends. This solves the problem that the existing protective frame 1 cannot fit tightly against the slope surface, improving the stability of the reinforcement effect. In the barrier component 5, the support net 501 is fixed to the inner wall of the protective frame 1, initially blocking the slope soil from falling. The elastic pad 502 connected to its rear side buffers the impact of falling soil, protects the support net 501 and enhances protection. The soil cloth 503 is connected to the rear side of the elastic pad 502 to prevent the leakage of fine particles and further improve the barrier function. Overall, all components cooperate with each other, from connection and support to barrier, to comprehensively ensure the reinforcement effect of the tunnel entrance slope.

[0043] Reference Figure 1 , Figure 4 and Figure 5The fixing structure 3 includes multiple conical sleeves 301. The front sides of the outer walls of the multiple conical sleeves 301 are fixedly connected to the four corners of the rear side of the outer wall of the protective frame 1, providing support points for subsequent connection and fixing operations. Multiple rotating rods 302 are rotatably connected to the inner walls of the multiple conical sleeves 301. Through the rotatable connection with the conical sleeves 301, the angle can be flexibly adjusted to better adapt to the shape of the slope surface. Pre-drilled holes 303 are provided around the outer walls of the multiple conical sleeves 301 to facilitate operation of the rotating rods 302 and adjust their angles. Conical feet 304 are fixedly connected to the rear sides of the outer walls of the multiple rotating rods 302. As the angle of the rotating rods 302 is adjusted, they can be inserted into the slope, increasing the friction and adhesion between the protective frame 1 and the slope. Each adjacent side has a threaded groove 305, which provides a force point for rotating the rotating rod 302. By using a tool in conjunction with the threaded groove 305, the rotation angle of the rotating rod 302 can be precisely controlled. Each of the four corners of the outer wall of the protective frame 1 has a reserved hole 306. The inner wall of each reserved hole 306 is slidably connected to a screw rod 307, which is easy to insert accurately and threadedly connect with the rotating rod 302. Each screw rod 307 is threadedly connected to the corresponding rotating rod 302. The front end of each screw rod 307 is fixedly connected to a limiting plate 308, which is used to limit the depth of screw rod 307 screwing in and avoid excessive screwing that could damage the structure. Each limiting plate 308 has multiple insertion holes 309 around its outer wall, which is convenient to use auxiliary tools to further tighten the screw rod 307 and ensure a more stable connection.

[0044] Specifically, multiple conical sleeves 301 are fixed at the four corners of the rear side of the outer wall of the protective frame 1, providing rotational support for the rotating rod 302. The rotating rod 302 rotates within the inner wall of the conical sleeve 301, and the conical feet 304 connected to the rear side of its outer wall can be adjusted by rotation to better insert into the slope, increase friction with the slope surface, and enhance the fixing effect. The pre-drilled holes 303 around the outer wall of the conical sleeve 301 facilitate the insertion of tools into the threaded grooves 305 of the rotating rod 302, thereby rotating the rotating rod 302. The pre-drilled holes 302 at the four corners of the outer wall of the protective frame 1... 6. A screw rod 307 is used for insertion, presumably a threaded rod. The threaded rod is connected to the rotating rod 302. The position of the rotating rod 302 and the tapered foot 304 can be adjusted by rotating the screw rod. The limiting plate 308 at the front end of the screw rod limits the screw rod's screwing depth to avoid excessive screwing and affecting structural stability. The insertion holes 309 around the outer wall of the limiting plate 308 facilitate the use of auxiliary tools to further tighten the screw rod, making the connection more secure. In short, all components of the fixing structure 3 work closely together to ensure that the protective frame 1 is stably fixed on the slope, improving the reliability of the tunnel entrance slope reinforcement device.

[0045] Reference Figure 1 , Figure 3 and Figure 7The reinforcement component 6 includes multiple anchor bolts 601, which are used to penetrate deep into the slope rock mass to provide the main connection tension between the protective frame 1 and the slope, enhancing the stability of the overall structure. Multiple perforations 602 are provided on the left and right sides of the outer walls of the two mounting plates 4, providing channels for the anchor bolts 601 to pass through the mounting plates 4, enabling the anchor bolts 601 to connect the protective frame 1 to the slope. The multiple anchor bolts 601 are slidably connected to their corresponding perforations 602. Anchors 603 are slidably connected to the front ends of the multiple anchor bolts 601. After the anchor bolts 601 are inserted into the slope rock mass, the interaction between the anchors 603 and the rock mass secures the anchor bolts. 601 is firmly fixed to the slope; the top front end of the outer wall of the protective frame 1 has two grooves 7 to provide an installation position for the rotating seat 8, while limiting the rotation range of the rotating seat 8 so that it can rotate within a specific area. The inner walls of the two grooves 7 are rotatably connected to the rotating seat 8, which can rotate freely within a certain angle range, providing flexibility for subsequent hoisting operations. The middle of the outer wall of the two rotating seats 8 is provided with a lifting hole 9, which makes it easy to hoist the protective frame 1 to the designated position by passing ropes or hooks through the lifting hole 9 during the installation of the protective frame 1, thus facilitating the installation and positioning of the protective frame 1.

[0046] Specifically, multiple anchor rods 601 are inserted into the perforations 602 on the left and right sides of the outer wall of the two mounting plates 4, and pass through the mounting plates 4. Since the anchor rods 601 are slidably connected to the perforations 602, the insertion position can be flexibly adjusted. Subsequently, the anchor 603 is slidably connected to the front end of the anchor rods 601, and the anchor rods 601 are fixed to the slope rock mass and other structures through the anchor 603, thereby connecting the protective frame 1 to the slope more firmly through the mounting plates 4, enhancing the reinforcement effect of the protective frame 1 on the slope. The two grooves 7 opened at the top front end of the outer wall of the protective frame 1 provide rotation space for the rotating seat 8. The rotating seat 8 is rotatably connected in the grooves 7. The lifting hole 9 opened in the middle of its outer wall facilitates the use of lifting equipment to lift and install the protective frame 1 by passing ropes and other tools through the lifting hole 9 during installation, which facilitates construction operations and improves installation efficiency.

[0047] Reference Figure 1 , Figure 2 and Figure 4Multiple threaded holes 10 are provided on the front side of the outer wall of the protective frame 1 to provide a connection base for the threaded rods 11, allowing the threaded rods 11 to be installed on the protective frame 1 through threaded engagement. The inner walls of the multiple threaded holes 10 are all threaded with threaded rods 11, which are threaded to the threaded holes 10. The position of the threaded rods 11 on the protective frame 1 can be adjusted by rotating them to meet different usage requirements. The front ends of the multiple threaded rods 11 are all fixedly connected with pipe clamps 12 for clamping various pipes, so that the pipes around the tunnel entrance can be fixed and arranged with the help of the protective frame 1, improving the cleanliness and safety of the site. Multiple conical protrusions 13 are fixedly connected to the rear side of the outer wall of the protective frame 1. When installing the protective frame 1, these conical protrusions 13 can be inserted into the slope soil to increase the friction and interlocking force between the protective frame 1 and the slope. The spacing between the multiple conical protrusions 13 is equal.

[0048] Specifically, the threaded hole 10 on the front side of the outer wall of the protective frame 1 cooperates with the threaded rod 11, and the threaded rod 11 is screwed into the threaded hole 10. The pipe clamp 12 fixed at the front end can be used to fix various pipes to meet the pipe layout requirements that may exist around the tunnel entrance. The conical protrusions 13 fixed at equal intervals on the rear side of the outer wall of the protective frame 1 can be inserted into the slope soil during installation, increasing the friction and interlocking force between the protective frame 1 and the slope, so that the protective frame 1 is more firmly attached to the slope and improves the overall reinforcement effect.

[0049] Working principle: When connecting multiple protective frames 1, firstly, align the fixed seat 203 on one protective frame 1 with the connecting seat 201 on another protective frame 1. This step lays the foundation for subsequent connection operations, ensuring accurate alignment of all components. Then, move the protective frame 1 so that the fixed seat 203 moves closer to the connecting seat 201. During this process, the insertion rod 206 on the fixed seat 203 will contact the corresponding connecting seat 201. Because the connecting seat 201 has an angle, this angle guides relative sliding between the insertion rod 206 and the connecting seat 201. As the fixed seat 203 continues to move, the connecting seat 201 will press the insertion rod 206, causing the insertion rod 206 to move into the sliding groove 204, thereby compressing the spring 205 fixed to the inner wall of the sliding groove 204. When the insertion rod 206 aligns with the rotating groove 202 on the connecting seat 201, the insertion rod 206 experiences a force from the connecting seat 201... Once the compression restriction of 01 is released, under the force of spring 205, spring 205 pushes the insert rod 206 to slide into the rotating groove 202, thereby quickly connecting the two protective frames 1. Furthermore, since the insert rod 206 and the rotating groove 202 are the same size, the insert rod 206 can rotate freely in the rotating groove 202. This characteristic allows the angle between the two protective frames 1 to be flexibly adjusted, which can better adapt to the slope shape at the tunnel entrance slope bend, ensuring that the protective frame 1 can fit tightly against the slope, greatly improving the stability of the reinforcement effect. The support net 501 in the barrier component 5 plays a preliminary blocking role to prevent the slope soil from falling. The elastic pad 502 fixedly connected to its rear side can buffer the impact of the falling soil, further protecting the support net 501 and enhancing the protective effect. The outermost soil cloth 503 can prevent the leakage of fine particles, ensuring the stability and safety of the slope reinforcement process in all aspects.

[0050] When installing the protective frame 1, place it in a suitable position. At this time, multiple conical sleeves 301 located at the four corners of the outer wall of the protective frame 1 will also be in place. Multiple rotating rods 302 rotatably connected to the inner wall of each conical sleeve 301 can rotate flexibly within the conical sleeve 301. Then, through the pre-drilled hole 303, use a tool to insert into the threaded groove 305 opened on the adjacent side of the rotating rod 302. Rotate the rotating rod 302, so that the conical foot 304 fixed on the rear side of its outer wall changes its angle with the rotation of the rotating rod 302. When the conical foot 304 is adjusted to a suitable angle, it can better fit with the slope surface and increase the friction with the slope surface. Then, the screw 307 is assumed to be a threaded rod and opens through the pre-drilled hole 2 at the four corners of the outer wall of the protective frame 1. Insert 306 to connect it threadedly with the corresponding rotating rod 302. As the lead screw 307 is screwed in, the limiting plate 308 fixedly connected at the front end gradually approaches the protective frame 1. The limiting plate 308 limits the screwing depth of the lead screw 307. At the same time, the multiple insertion holes 309 on its outer wall facilitate the use of auxiliary tools to further tighten the lead screw 307, ensuring a more secure connection. Through the above operations, the cooperation between the rotating rod 302 and the lead screw 307 makes the protective frame 1 tightly connected to the slope. Multiple conical feet 304 penetrate deep into the slope, greatly enhancing the stability of the protective frame 1 on the slope and effectively preventing the protective frame 1 from shifting due to external forces. This ensures the normal operation of the tunnel entrance slope reinforcement device and provides reliable reinforcement and protection for the tunnel entrance slope.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A tunnel entrance slope reinforcement device, comprising a protective frame (1), characterized in that: The top and bottom sides of the protective frame (1) are fixedly connected with mounting plates (4), the outer wall of the protective frame (1) is provided with a connecting mechanism (2), the rear side of the outer wall of the protective frame (1) is provided with a fixing structure (3), the outer sides of the two mounting plates (4) are provided with reinforcing components (6), and the inner wall of the protective frame (1) is provided with a barrier component (5). The connecting mechanism (2) includes two connecting seats (201). The left sides of the two connecting seats (201) are respectively fixedly connected to the upper and lower sides of the right end of the outer wall of the protective frame (1). A rotating groove (202) is provided on the adjacent side of the two connecting seats (201). A fixed seat (203) is fixedly connected to the left side of the outer wall of the protective frame (1). A sliding groove (204) is provided on the upper and lower sides of the outer wall of the fixed seat (203). A spring (205) is fixedly connected to the inner wall of the two sliding grooves (204). A plug rod (206) is fixedly connected to the opposite side of the two springs (205). The two plug rods (206) are slidably connected to the corresponding rotating grooves (202).

2. The tunnel entrance slope reinforcement device according to claim 1, characterized in that: The fixing structure (3) includes multiple conical sleeves (301). The front sides of the outer walls of the multiple conical sleeves (301) are respectively fixedly connected to the four corners of the rear side of the outer wall of the protective frame (1). The inner walls of the multiple conical sleeves (301) are rotatably connected to multiple rotating rods (302). The outer walls of the multiple conical sleeves (301) are provided with reserved holes (303) around the perimeter. The rear sides of the outer walls of the multiple rotating rods (302) are fixedly connected to conical feet (304). Threaded grooves (305) are provided on the adjacent side of the protective frame (1). Reserved holes (306) are provided at the four corners of the outer wall of the protective frame (1). Screws (307) are slidably connected to the inner walls of the reserved holes (306). The screws (307) are threadedly connected to the corresponding rotating rods (302). The front ends of the screws (307) are fixedly connected to the limiting plates (308). Multiple insertion holes (309) are provided around the outer walls of the limiting plates (308).

3. The tunnel entrance slope reinforcement device according to claim 1, characterized in that: The barrier assembly (5) includes a support net (501), an elastic pad (502) is fixedly connected to the rear side of the outer wall of the support net (501), and an earthwork cloth (503) is fixedly connected to the rear side of the outer wall of the elastic pad (502).

4. The tunnel entrance slope reinforcement device according to claim 1, characterized in that: The reinforcement component (6) includes multiple anchor rods (601), and multiple through holes (602) are provided on the left and right sides of the outer walls of the two mounting plates (4). The multiple anchor rods (601) are slidably connected to the corresponding through holes (602), and the front ends of the multiple anchor rods (601) are slidably connected to anchors (603).

5. The tunnel entrance slope reinforcement device according to claim 1, characterized in that: The protective frame (1) has two grooves (7) at the top front end of its outer wall. The inner walls of the two grooves (7) are rotatably connected to rotating seats (8). The middle of the outer walls of the two rotating seats (8) is provided with lifting holes (9).

6. The tunnel entrance slope reinforcement device according to claim 1, characterized in that: The outer wall of the protective frame (1) has multiple threaded holes (10) on the front side. The inner walls of the multiple threaded holes (10) are threaded with threaded rods (11), and the front ends of the multiple threaded rods (11) are fixedly connected with pipe clamps (12).

7. The tunnel entrance slope reinforcement device according to claim 1, characterized in that: The protective frame (1) has multiple conical protrusions (13) fixedly connected around the rear side of its outer wall, and the spacing between adjacent conical protrusions (13) is equal.

8. A tunnel entrance slope reinforcement device according to claim 2, characterized in that: The diameters of the two insertion rods (206) are equal to the inner diameters of the two rotating slots (202), and the right ends of the adjacent sides of the two connecting seats (201) are beveled.

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