A multi-level reinforcement device for slope support

Abstract

The present invention discloses a multi-level reinforcement device for slope support, which relates to the technical field of slope support and aims to solve the technical problem of insufficient functions of existing slope anchor reinforcement devices. It includes an inner through sleeve assembly, and the inner through sleeve assembly is a telescopic structure; a first-level hard bite assembly is arranged inside the inner through sleeve assembly; and, a second-level top expansion mechanism is movably arranged outside the first-level hard bite assembly; and, a lead screw is rotatably arranged at the top of the first-level hard bite assembly through a bearing; the second-level top expansion mechanism is threadedly connected to the lead screw; and, a ribbed steel bar is fixedly arranged at the top of the lead screw, and, a screw shaft is fixedly arranged at the top of the ribbed steel bar, and, a force-bearing fastening block is threadedly connected to the screw shaft; a force-bearing connection sleeve is detachably connected to the top of the inner through sleeve assembly. The functionality of the reinforcement device is effectively improved based on two operation modes.

Description

Technical Field

[0001] The present invention relates to the technical field of slope support, and more specifically, to a multi-level reinforcement device for slope support. Background Technique

[0002] A slope anchor is a geotechnical engineering structure used to reinforce slopes. It mainly connects unstable slope rock and soil masses with stable strata through anchors, thereby improving the overall stability of the slope. In slope engineering, due to the influence of factors such as gravity, groundwater, and earthquakes on rock and soil masses, sliding or collapse may occur. The anchor system acts like a "nail" to fix the rock and soil masses in place.

[0003] In existing water conservancy projects, most slope anchors are connected and fixed by penetrating deep into the ground and cooperating with protrusions or barbs on the anchors. For the differences in the underground geological layers of water flow projects, the existing protrusion or barb methods cannot be well adapted. They are mostly connected by the same structure, unable to maintain good rigid contact with the hard layer while requiring multiple contact points, and needing to increase the contact area with the soil layer. Therefore, it is particularly important to propose a multi-level reinforcement device with a bite connection for the hard layer in the slope of water conservancy projects and an increased contact surface with the soil layer. In view of this, we propose a multi-level reinforcement device for slope support. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-level reinforcement device for slope support to solve the technical problem of insufficient functions of existing slope anchor reinforcement devices.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A multi-level reinforcement device for slope support includes an inner through shaft sleeve assembly, and the inner through shaft sleeve assembly is a telescopic structure; a first-level hard bite assembly is arranged inside the inner through shaft sleeve assembly; and a second-level top expansion mechanism is movably arranged outside the first-level hard bite assembly; and a lead screw is rotatably arranged at the top of the first-level hard bite assembly through a bearing; the second-level top expansion mechanism is threadedly connected to the lead screw; and a ribbed steel bar is fixedly arranged at the top of the lead screw, and a screw shaft is fixedly arranged at the top of the ribbed steel bar, and a force-bearing fastening block is threadedly connected to the screw shaft; a force-bearing connection sleeve is detachably connected to the top of the inner through shaft sleeve assembly.

[0006] The present invention realizes good rigid bite connection to the hard layer through a first-level hard bite component that can be unfolded at the first level, and realizes the anchoring connection of the underground layer of a water conservancy project being a rock-like hard layer during the operation of the anchor rod. And through the descent and unfolding of the second-level top-expansion mechanism, the further force extrusion and unfolding of the first-level hard bite component are realized, so that the movable bite end in the first-level hard bite component further penetrates and connects to the soil layer outside the drill hole, improving the good effect of the contact surface, and realizing the anchoring connection of the underground layer of a water conservancy project being a soil-like geological layer during the operation of the anchor rod. The first-level basic unfolding is used to adapt to the hard layer anchoring connection, and then the second-level unfolding is used to adapt to the soil layer anchoring connection. Based on the above multi-level operations, the functionality of the reinforcement device is effectively improved.

[0007] Preferably, the inner through-bushing assembly includes a guiding spiral head fixedly arranged below the first-level hard bite component; a guiding slide rail is fixedly arranged in the middle of the top of the guiding spiral head; an extension sleeve is arranged on the top of the guiding slide rail; a plurality of axial limiting protrusions are arranged at equal intervals in a ring shape on the side of the extension sleeve; a fixed limiting guiding cylinder shaft is arranged on the side of the top of the guiding spiral head; and, an active limiting guiding cylinder shaft is arranged above the fixed limiting guiding cylinder shaft, and, an axial limiting sliding groove that is slidably matched with the axial limiting protrusions is arranged on the side of the active limiting guiding cylinder shaft.

[0008] Preferably, a connection installation groove in a "T" shape is arranged at the top of the active limiting guiding cylinder shaft, and, a force-assisted protrusion for sliding and hooking along the connection installation groove is arranged at the bottom of the force-bearing connection sleeve; and, a plurality of one-way guiding blocks with a triangular cross-section are arranged at the upper end of the inner wall of the active limiting guiding cylinder shaft, and, a force-bearing limiting block that is symmetrically distributed with the one-way guiding blocks is arranged at the bottom of the ribbed steel bar.

[0009] Preferably, the internal gap between the active limiting guiding cylinder shaft and the fixed limiting guiding cylinder shaft forms an adjustment cavity; and, the active limiting guiding cylinder shaft is slidably closed and adjusted with the extension sleeve through the axial limiting sliding groove and the axial limiting protrusion, so that the active limiting guiding cylinder shaft and the fixed limiting guiding cylinder shaft are in relative contact, forming a partition structure for closing the adjustment cavity.

[0010] Preferably, the active limiting guiding cylinder shaft is slidably unfolded and adjusted with the extension sleeve through the axial limiting sliding groove and the axial limiting protrusion, so that the active limiting guiding cylinder shaft and the fixed limiting guiding cylinder shaft are adjusted to be relatively far away from each other to form a bite accommodation cavity for accommodating the unfolded protrusion of the bite end of the first-level hard bite component and the second-level top-expansion mechanism; and, both ends of the bite accommodation cavity are in a frustum shape.

[0011] Preferably, the first-level hard bite assembly includes a first-level bifurcated base slidably arranged on the guiding slide rail; and, at the bifurcated ends of the first-level bifurcated base, bite blocks are provided through at least two hinge shafts A, and, on the outer arc surface of the bite blocks, connecting teeth A for bite connection with the hard layer are uniformly arranged; and, an extending accommodation cavity is arranged inside the bite blocks, and, an extending force-receiving block is movably arranged inside the bite blocks.

[0012] Preferably, the second-level top-expanding mechanism includes a second-level bifurcated base screwed onto the lead screw; and, at the bifurcated ends of the second-level bifurcated base, second-level extrusion blocks are provided through at least two hinge shafts B; and, contact pressing blocks are arranged on both sides of the second-level extrusion blocks, and, auxiliary cutting surfaces in an inclined shape are arranged on the upper and lower sides of the contact pressing blocks; wherein, arc chamfered surfaces are arranged at both ends of the second-level extrusion blocks and the bite blocks, and the shapes of both ends are set to be the same as those of both ends of the bite accommodation cavity.

[0013] A using method of a multi-level reinforcement device for slope support includes the following steps:

[0014] S100. Drilling treatment: Use an anchor drilling machine to drill the slope required for the water conservancy project.

[0015] S200. Installation treatment: Insert and install the force-receiving connection sleeve and the grooved part at the top of the connection installation groove through the force-receiving auxiliary protrusions.

[0016] S300. Insertion treatment: Apply a force to the force-receiving connection sleeve to cause the movable limit guiding cylinder shaft and the fixed limit guiding cylinder shaft in this multi-level reinforcement device to always be in contact and enter the required drilling depth.

[0017] S400. Anchoring treatment:

[0018] If the hard layer is to be anchored:

[0019] Push the ribbed steel bar manually or by machine to cause the first-level bifurcated base to slide downward along the guiding slide rail and contact the upper surface of the guiding spiral head. Then, by further pushing, under the action of the hinge shaft A and with both ends of the bite accommodation cavity being frustum-shaped, each group of hinge shafts A rotates synchronously, causing the bite blocks to expand, and using the connecting teeth A arranged on the outer surface of the bite blocks to fully bite-connect with the circumferential surface of the hard layer drilling.

[0020] If the soil layer is to be anchored:

[0021] Push the ribbed steel bar manually or by machine to cause the first-stage bifurcated base to slide downward along the guiding slide rail and contact the upper surface of the guiding spiral head. Then, by further pushing, with the action of the hinge shaft A, both ends of the mating bite receiving cavity are provided with frustum shapes, causing each group of hinge shafts A to rotate synchronously, enabling the bite blocks to unfold. Then, manually or by machine, rotate the ribbed steel bar to cause the second-stage bifurcated base to move downward synchronously and contact the upper surface of the guiding spiral head. Then, by further rotating, with the action of the hinge shaft B, both ends of the mating bite receiving cavity are provided with frustum shapes, causing each group of hinge shafts B to rotate synchronously, enabling the second-stage extrusion blocks to unfold. By arranging contact abutting blocks on both sides of the second-stage extrusion blocks, the extended force receiving blocks are further unfolded outward. The soil layer is inserted by the comb-shaped extended force receiving blocks, and the effective contact surface maintains a good anchoring effect;

[0022] S500, Disassembly treatment: Then, separate the force-bearing connection sleeve from the connection installation groove by rotating and pulling it out;

[0023] S600, Grouting treatment: Pour the drill hole with cement mortar and rotate the force-bearing fastening block.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] (1) The present invention realizes good rigid bite connection with the hard layer through the first-stage hard bite assembly that can be unfolded at the first stage, achieving the anchoring connection of the underground layer of water conservancy projects being a rock-like hard layer during the anchor rod operation; and through the descent and unfolding of the second-stage top-expanding mechanism, the further force extrusion and unfolding of the first-stage hard bite assembly are realized, causing the movable bite end in the first-stage hard bite assembly to further penetrate and connect with the soil layer outside the drill hole, improving the good effect of the contact surface, and achieving the anchoring connection of the underground layer of water conservancy projects being a soil-like geological layer during the anchor rod operation; by unfolding at the first stage to adapt to the anchoring connection of the hard layer, and then by unfolding at the second stage to adapt to the anchoring connection of the soil layer, the functionality of the reinforcement device is effectively improved based on the above multi-stage operations.

[0026] 2. By providing the force-assisted protrusions at the bottom of the force-bearing connecting sleeve, the present invention enables the force-bearing connecting sleeve to be inserted along the top slot of the connecting installation groove. When the force-bearing connecting sleeve stops, it can brake the entire inner sleeve assembly, effectively avoiding the inconvenience of adjustment caused by the synchronous rotation of the inner sleeve assembly while the ribbed steel bar rotates. At the same time, through the cooperation of a number of one-way guiding blocks with triangular cross-sections and force-bearing limiting blocks with the same shape using inclined plane guiding, when the force-bearing limiting block slides downward, it cannot be overly stretched upward, effectively controlling the relative fixed height of the first-level hard biting assembly and the second-level top expansion mechanism after moving downward, and avoiding the situation of unstable anchoring caused by the upward movement of the ribbed steel bar resulting in the retraction of the first-level hard biting assembly and the second-level top expansion mechanism.

[0027] 3. By manually or using a machine to apply a main force to the force-bearing connecting sleeve, the present invention ensures that the movable limiting guiding cylinder shaft and the fixed limiting guiding cylinder shaft are always in contact, effectively reducing the situation where the adjustment cavity in the multi-level reinforcement device cannot contact the crushed stones and soil residues in the drill hole when it penetrates into the drill hole, and avoiding the movement interference caused by the entry of crushed stones and soil residues into the adjustment cavity to the expansion movement of the first-level hard biting assembly and the second-level top expansion mechanism.

[0028] 4. After the multi-level reinforcement device penetrates into the required depth of the drill hole based on manual or machine operation, the present invention hooks the force-assisted protrusion with the horizontal part of the connecting installation groove. By pulling the force-bearing connecting sleeve, the movable limiting guiding cylinder shaft and the fixed limiting guiding cylinder shaft are separated, facilitating the expansion of the first-level hard biting assembly and the second-level top expansion mechanism for anchoring work.

[0029] 5. By manually or using a machine to push the ribbed steel bar, the present invention causes the first-level bifurcated base frame to slide downward along the guiding slide rail and contact the upper surface of the guiding spiral head. Then, by further pushing, with the cooperation of the hinge shaft A and the both ends of the biting accommodation cavity being arranged in a frustum shape, each group of hinge shafts A rotates synchronously, causing the biting blocks to expand, and using the connecting teeth A arranged on the outer surface of the biting blocks to fully bite and connect with the circumferential surface of the hard layer drill hole.

[0030] 6. Based on the expansion of the biting blocks, the present invention rotates the ribbed steel bar manually or by machine, causing the second-level bifurcated base frame to move downward synchronously and contact the upper surface of the guiding spiral head. Then, by further rotating, with the cooperation of the hinge shaft B and the both ends of the biting accommodation cavity being arranged in a frustum shape, each group of hinge shafts B rotates synchronously, causing the second-level extrusion blocks to expand. By providing contact and abutting blocks on both sides of the second-level extrusion blocks, the extended force-bearing blocks are further expanded outward, and the soil layer is inserted by the comb-shaped extended force-bearing blocks, effectively maintaining a good anchoring effect on the contact surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1Schematic diagram of the overall three-dimensional structure of the present invention;

[0032] Figure 2 Schematic diagram of the sectional structure of the inner through-bushing assembly of the present invention;

[0033] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged partial structure at A in the present invention;

[0034] Figure 4 Schematic diagram of the occlusal accommodation cavity structure of the present invention;

[0035] Figure 5 Schematic diagram of the three-dimensional structure of the primary hard occlusal assembly and the secondary top-expansion mechanism of the present invention;

[0036] Figure 6 Schematic diagram of the three-dimensional structure of the occlusal block and the secondary extrusion block of the present invention;

[0037] Figure 7 Schematic diagram of the internal top-down view structure of the primary hard occlusal assembly and the secondary top-expansion mechanism of the present invention;

[0038] Figure 8 Schematic diagram of the top-down view structure of the primary hard occlusal assembly and the secondary top-expansion mechanism of the present invention.

[0039] Explanation of the reference numerals in the figure:

[0040] 1. Inner through-bushing assembly; 2. Primary hard occlusal assembly; 3. Secondary top-expansion mechanism; 4. Lead screw; 5. Ribbed steel bar; 6. Screw shaft; 7. Force-bearing fastening block; 8. Force-bearing connecting sleeve;

[0041] 101. Guide spiral head; 1011. Fixed limit guide cylinder shaft; 1012. Movable limit guide cylinder shaft; 1013. Axial limit chute; 1015. Connection installation groove; 1016. One-way guide block; 102. Guide slide rail; 103. Extension cylinder sleeve; 1031. Axial limit protrusion;

[0042] 201. Primary bifurcated base frame; 202. Hinge shaft A; 203. Occlusal block; 204. Connecting tooth A; 205. Extended force-bearing block;

[0043] 301. Secondary bifurcated base frame; 302. Hinge shaft B; 303. Secondary extrusion block; 3031. Contact and abutting block; 3032. Auxiliary cutting surface;

[0044] 501. Force-bearing limit block;

[0045] 801. Force-bearing auxiliary protrusion. Detailed implementation manner

[0046] As Figures 1 to 8As shown in the figure, a multi-level reinforcement device for slope support according to the present invention includes an inner through bushing assembly 1, and the inner through bushing assembly 1 is a telescopic structure; a first-level hard bite assembly 2 is arranged inside the inner through bushing assembly 1; and, a second-level top expansion mechanism 3 is movably arranged outside the first-level hard bite assembly 2; and, a lead screw 4 is rotatably arranged at the top of the first-level hard bite assembly 2 through a bearing; the second-level top expansion mechanism 3 is threadedly connected to the lead screw 4; and, a ribbed steel bar 5 is fixedly arranged at the top of the lead screw 4, and, a screw shaft 6 is fixedly arranged at the top of the ribbed steel bar 5, and, a force-bearing fastening block 7 is threadedly connected to the screw shaft 6; the top of the inner through bushing assembly 1 is detachably connected to a force-bearing connection sleeve 8. The present invention realizes good rigid bite connection with the hard layer through the first-level hard bite assembly 2 that can be expanded at the first level, and realizes the anchoring connection of the underground layer of the water conservancy project to the hard rock layer during the anchor rod operation; and through the descent and expansion of the second-level top expansion mechanism 3, the further force-bearing extrusion expansion of the first-level hard bite assembly 2 is realized, so that the movable bite end inside the first-level hard bite assembly 2 further penetrates and connects with the soil layer outside the drill hole, improving the good effect of the contact surface, and realizing the anchoring connection of the underground layer of the water conservancy project to the soil geological layer during the anchor rod operation; through the expansion at the first level to adapt to the anchoring connection of the hard layer, and then through the expansion at the second level to adapt to the anchoring connection of the soil layer, the functionality of the reinforcement device is effectively improved based on the above multi-level operations.

[0047] In an embodiment of the present invention, the inner through bushing assembly 1 includes a guiding spiral head 101 fixedly arranged below the first-level hard bite assembly 2; a guiding slide rail 102 is fixedly arranged at the middle of the top of the guiding spiral head 101; an extension barrel sleeve 103 is arranged at the top of the guiding slide rail 102; a plurality of axial limiting protrusions 1031 are arranged at equal intervals in a ring shape on the side of the extension barrel sleeve 103; a fixed limiting guiding barrel shaft 1011 is arranged on the side of the top of the guiding spiral head 101; and, a movable limiting guiding barrel shaft 1012 is arranged above the fixed limiting guiding barrel shaft 1011, and, an axial limiting sliding groove 1013 that is slidably matched with the axial limiting protrusions 1031 is arranged on the side of the movable limiting guiding barrel shaft 1012.

[0048] In an embodiment of the present invention, a connection installation groove 1015 in a "T" shape is provided at the top of the movable limit guiding cylinder shaft 1012, and a force-bearing auxiliary protrusion 801 for sliding and hooking along the connection installation groove 1015 is provided at the bottom of the force-bearing connection sleeve 8; moreover, a plurality of one-way guiding blocks 1016 with triangular cross-sections are provided at the upper end of the inner wall of the movable limit guiding cylinder shaft 1012, and a force-bearing limit block 501 symmetrically distributed with the one-way guiding blocks 1016 about the center is provided at the bottom of the ribbed steel bar 5. Through the setting of the force-bearing auxiliary protrusion 801 at the bottom of the force-bearing connection sleeve 8 in the present invention, the force-bearing connection sleeve 8 can be inserted along the top slot of the connection installation groove 1015, and the force-bearing connection sleeve 8 stops to brake the whole inner sleeve assembly 1, effectively avoiding the inconvenience of adjustment caused by the synchronous rotation of the ribbed steel bar 5 and the inner sleeve assembly 1 when the ribbed steel bar 5 rotates; at the same time, through the cooperation of a plurality of one-way guiding blocks 1016 with triangular cross-sections and the force-bearing limit blocks 501 with the same shape by means of inclined plane guiding, the force-bearing limit block 501 cannot be stretched excessively upward while sliding downward, effectively controlling the relative fixed height after the first-stage hard biting assembly 2 and the second-stage top expansion mechanism 3 move downward, and avoiding the situation that the first-stage hard biting assembly 2 and the second-stage top expansion mechanism 3 retract due to the upward movement of the ribbed steel bar 5, resulting in unstable anchoring.

[0049] In an embodiment of the present invention, the internal gap between the movable limit guiding cylinder shaft 1012 and the fixed limit guiding cylinder shaft 1011 forms an adjustment cavity; moreover, the movable limit guiding cylinder shaft 1012 is slidably closed and adjusted with the extension sleeve 103 through the axial limit chute 1013 and the axial limit protrusion 1031, so that the movable limit guiding cylinder shaft 1012 and the fixed limit guiding cylinder shaft 1011 are in relative contact, forming a partition structure for closing the adjustment cavity. In the present invention, by applying a main force to the force-bearing connection sleeve 8 manually or by a machine, the movable limit guiding cylinder shaft 1012 and the fixed limit guiding cylinder shaft 1011 are always in contact, effectively reducing the situation that the adjustment cavity cannot contact the drilling crushed stones and soil residues when the multi-stage reinforcement device penetrates into the drilling hole, and avoiding the movement interference caused by the entry of the crushed stones and soil residues into the adjustment cavity to the expansion movement of the first-stage hard biting assembly 2 and the second-stage top expansion mechanism 3.

[0050] In an embodiment of the present invention, the movable limit guiding cylinder shaft 1012 is adjusted by sliding expansion through the axial limit sliding groove 1013 and the axial limit protrusion 1031 with the extension cylinder sleeve 103, so that the movable limit guiding cylinder shaft 1012 and the fixed limit guiding cylinder shaft 1011 are adjusted to move away from each other to form a bite accommodating cavity for accommodating the protruding bite end of the first-stage hard bite assembly 2 and the second-stage top expansion mechanism 3; and both ends of the bite accommodating cavity are frustum-shaped. After the multi-stage reinforcement device is penetrated into the required depth of the drill hole by manual or machine operation, the present invention hooks the force-bearing auxiliary protrusion 801 with the horizontal part of the connection installation groove 1015, and separates the movable limit guiding cylinder shaft 1012 from the fixed limit guiding cylinder shaft 1011 by pulling the force-bearing connection sleeve 8, facilitating the expansion of the first-stage hard bite assembly 2 and the second-stage top expansion mechanism 3 for anchoring work.

[0051] In an embodiment of the present invention, the first-stage hard bite assembly 2 includes a first-stage bifurcated base frame 201 slidably arranged on the guiding slide rail 102; and the bifurcated ends of the first-stage bifurcated base frame 201 are provided with bite blocks 203 through at least two hinge shafts A202, and connection teeth A204 for bite connection with the hard layer are uniformly arranged on the outer arc surface of the bite blocks 203; and an extension accommodating cavity is arranged inside the bite blocks 203, and extension force-bearing blocks 205 are movably arranged inside the bite blocks 203. In the present invention, the ribbed steel bar 5 is pushed manually or by machine to make the first-stage bifurcated base frame 201 slide downward along the guiding slide rail 102 and contact the upper surface of the guiding spiral head 101, and then by further pushing, with the cooperation of the hinge shafts A202 and the frustum-shaped arrangement of both ends of the bite accommodating cavity, each group of hinge shafts A202 rotates synchronously, causing the bite blocks 203 to expand, and using the connection teeth A204 arranged on the outer surface of the bite blocks 203 to fully bite-connect with the circumferential surface of the hard layer of the drill hole.

[0052] In an embodiment of the present invention, the secondary top expansion mechanism 3 includes a secondary bifurcated base frame 301 screwed onto the lead screw 4; moreover, the bifurcated ends of the secondary bifurcated base frame 301 are provided with secondary extrusion blocks 303 through at least two hinge shafts B302; moreover, contact and pressing blocks 3031 are provided on both sides of the secondary extrusion blocks 303, and inclined auxiliary cutting surfaces 3032 are provided on the upper and lower sides of the contact and pressing blocks 3031; wherein, arc chamfered surfaces are provided at both upper and lower ends of the secondary extrusion blocks 303 and the engaging blocks 203, which are shaped to match the two ends of the engaging accommodation cavity. Based on the expansion of the engaging block 203, the present invention rotates the ribbed steel bar 5 manually or based on a certain mechanism to cause the secondary bifurcated base frame 301 to move downward synchronously and contact the upper surface of the guiding spiral head 101. Then, by further rotating, under the action of the hinge shaft B302 and with both ends of the engaging accommodation cavity being frustum-shaped, each group of hinge shafts B302 rotates synchronously, causing the secondary extrusion block 303 to expand. Through the contact and pressing blocks 3031 provided on both sides of the secondary extrusion block 303, the extending force-bearing block 205 is further expanded outward, and the soil layer is inserted through the comb-shaped extending force-bearing block 205, ensuring a good anchoring effect on the effective contact surface.

[0053] Working principle: This embodiment provides a multi-level reinforcement device for slope support. The usage steps are as follows:

[0054] S100. Drilling treatment: Use an anchor drilling machine to drill the slope required for the water conservancy project.

[0055] S200. Installation treatment: Insert and install the force-bearing connection sleeve 8 into the top groove of the connection installation groove 1015 through the force-bearing auxiliary protrusion 801.

[0056] S300. Insertion treatment: Apply a force to the force-bearing connection sleeve 8 to cause the movable limit guiding cylinder shaft 1012 and the fixed limit guiding cylinder shaft 1011 in this multi-level reinforcement device to always contact and enter the required drilling depth.

[0057] S400. Anchoring treatment:

[0058] If anchoring treatment is performed on a hard layer:

[0059] Manually or by machine, push the ribbed steel bar 5 to cause the primary bifurcated base frame 201 to slide downward along the guiding slide rail 102 and contact the upper surface of the guiding spiral head 101. Then, by further pushing, under the action of the hinge shaft A202 and with both ends of the engaging accommodation cavity being frustum-shaped, each group of hinge shafts A202 rotates synchronously, causing the engaging block 203 to expand, and using the connecting teeth A204 provided on the outer surface of the engaging block 203 to fully engage and connect with the circumferential surface of the hard layer drilling.

[0060] If the soil layer is to be anchored:

[0061] Push the ribbed steel bar 5 manually or by machine to cause the primary bifurcated base frame 201 to slide downward along the guiding slide rail 102 and contact the upper surface of the guiding spiral head 101. Then, by further pushing, with the help of the hinge shaft A202, the two ends of the engaging receiving cavity are both frustum-shaped, causing each group of hinge shafts A202 to rotate synchronously, so that the engaging blocks 203 are unfolded. Then, manually or based on rotation, rotate the ribbed steel bar 5 to cause the secondary bifurcated base frame 301 to move downward synchronously and contact the upper surface of the guiding spiral head 101. Then, by further rotation, with the help of the hinge shaft B302, the two ends of the engaging receiving cavity are both frustum-shaped, causing each group of hinge shafts B302 to rotate synchronously, so that the secondary extrusion blocks 303 start to work. By arranging the contact abutting blocks 3031 on both sides of the secondary extrusion blocks 303, the extended force-bearing blocks 205 are further unfolded outward. The soil layer is inserted by the comb-shaped extended force-bearing blocks 205, and the effective contact surface maintains a good anchoring effect;

[0062] S500. Dismantling treatment: Then, separate the force-bearing connecting sleeve 8 from the connecting installation groove 1015 by rotation and pulling out;

[0063] S600. Grouting treatment: Pour the drill hole with cement mortar and rotate the force-bearing fastening block 7.

[0064] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A multi - level reinforcement device for slope support, characterized in that, It includes an inner through-bushing assembly (1), and the inner through-bushing assembly (1) is a telescopic structure; a first-level hard biting assembly (2) is arranged inside the inner through-bushing assembly (1); moreover, a second-level top-expanding mechanism (3) is movably arranged outside the first-level hard biting assembly (2); Moreover, a lead screw (4) is rotatably arranged at the top of the first-level hard biting assembly (2) through a bearing; the second-level top-expanding mechanism (3) is threadedly connected to the lead screw (4); Moreover, a ribbed steel bar (5) is fixedly arranged at the top of the lead screw (4), and a screw shaft (6) is fixedly arranged at the top of the ribbed steel bar (5), and a force-bearing fastening block (7) is threadedly connected to the screw shaft (6); A force-bearing connection sleeve (8) is detachably connected to the top of the inner through-bushing assembly (1); The inner through-bushing assembly (1) includes a guiding spiral head (101) fixedly arranged below the first-level hard biting assembly (2); a guiding slide rail (102) is fixedly arranged at the middle of the top of the guiding spiral head (101); an extension sleeve (103) is arranged on the top of the guiding slide rail (102); a plurality of axial limiting protrusions (1031) are arranged at equal intervals in a ring shape on the side of the extension sleeve (103); A fixed limiting guiding cylinder shaft (1011) is arranged on the side of the top of the guiding spiral head (101); Moreover, a movable limiting guiding cylinder shaft (1012) is arranged above the fixed limiting guiding cylinder shaft (1011), and an axial limiting chute (1013) which is slidably matched with the axial limiting protrusion (1031) is arranged on the side of the movable limiting guiding cylinder shaft (1012); The movable limiting guiding cylinder shaft (1012) is slidably expanded and adjusted with the extension sleeve (103) through the axial limiting chute (1013) and the axial limiting protrusion (1031), so that the movable limiting guiding cylinder shaft (1012) and the fixed limiting guiding cylinder shaft (1011) are adjusted to be relatively far away from each other to form a biting accommodation cavity for accommodating the biting ends of the first-level hard biting assembly (2) and the second-level top-expanding mechanism (3) to bulge out; Moreover, both ends of the biting accommodation cavity are frustum-shaped; The first-level hard biting assembly (2) includes a first-level bifurcated base frame (201) slidably arranged on the guiding slide rail (102); moreover, biting blocks (203) are arranged at the bifurcated ends of the first-level bifurcated base frame (201) through at least two hinge shafts A (202), and connecting teeth A (204) for biting and connecting the hard layers are uniformly arranged on the outer arc surfaces of the biting blocks (203); Moreover, an extension accommodation cavity is arranged inside the biting block (203), and an extension force-bearing block (205) is movably arranged inside the biting block (203); The second-level top-expanding mechanism (3) includes a second-level bifurcated base frame (301) screwed on the lead screw (4); moreover, second-level extrusion blocks (303) are arranged at the bifurcated ends of the second-level bifurcated base frame (301) through at least two hinge shafts B (302); Moreover, contact and pressing blocks (3031) are arranged on both sides of the secondary extrusion block (303), and auxiliary cutting surfaces (3032) in an inclined shape are arranged on the upper and lower sides of the contact and pressing blocks (3031); Among them, arc chamfer surfaces are arranged at the upper and lower ends of the secondary extrusion block (303) and the engaging block (203), and the shapes of the arc chamfer surfaces are set according to the two ends of the engaging accommodation cavity.

2. The multi - stage reinforcement device for slope support according to claim 1, characterized in that, A connecting and mounting groove (1015) in a "T" shape is arranged at the top of the movable limit guiding cylinder shaft (1012), and a force-bearing auxiliary protrusion (801) for sliding and hooking along the connecting and mounting groove (1015) is arranged at the bottom of the force-bearing connecting sleeve (8); Moreover, a plurality of one-way guiding blocks (1016) with a triangular cross-section are arranged at the upper end of the inner wall of the movable limit guiding cylinder shaft (1012), and force-bearing limit blocks (501) symmetrically distributed with the one-way guiding blocks (1016) are arranged at the bottom of the ribbed steel bar (5).

3. The multi - level reinforcement device for slope support according to claim 2, characterized in that, The internal gap between the movable limit guiding cylinder shaft (1012) and the fixed limit guiding cylinder shaft (1011) forms an adjustment cavity; Moreover, the movable limit guiding cylinder shaft (1012) is slidably closed and adjusted with the extension sleeve (103) through an axial limit sliding groove (1013) and an axial limit protrusion (1031), so that the movable limit guiding cylinder shaft (1012) and the fixed limit guiding cylinder shaft (1011) are in relative contact and fit, forming a partition structure for closing the adjustment cavity.

4. The usage method of a multi-level reinforcement device for slope support according to claim 3, characterized in that, It includes the following steps: S100. Drilling treatment: Drilling the slope required for the water conservancy project through an anchor rod drilling machine; S200. Installation treatment: Inserting and installing the force-bearing connecting sleeve (8) and the top grooved part of the connecting and mounting groove (1015) through the force-bearing auxiliary protrusion (801); S300. Insertion treatment: Applying a force to the force-bearing connecting sleeve (8) to cause the movable limit guiding cylinder shaft (1012) and the fixed limit guiding cylinder shaft (1011) in the multi-stage reinforcement device to always contact and enter the required drilling depth; S400. Anchoring treatment: If the hard layer is subjected to anchoring treatment: Pushing the ribbed steel bar (5) manually or by machine to cause the primary bifurcated base frame (201) to slide downward along the guiding slide rail (102) and contact the upper surface of the guiding spiral head (101), and then further pushing, under the action of the hinge shaft A (202), and with both ends of the engaging accommodation cavity being arranged in a frustum shape, causing each group of hinge shafts A (202) to rotate synchronously, so that the engaging block (203) unfolds, and using the connecting teeth A (204) arranged on the outer surface of the engaging block (203) to fully engage and connect with the circumferential surface of the hard layer drilling; If the soil layer is subjected to anchoring treatment: Push the ribbed steel bar (5) manually or by machine to cause the primary bifurcated base frame (201) to slide downward along the guiding slide rail (102) and contact the upper surface of the guiding spiral head (101). Then, by further pushing, the two ends of the engagement accommodating cavity are both frustum-shaped under the action of the hinge shaft A (202), causing each group of hinge shafts A (202) to rotate synchronously, so that the engagement blocks (203) are unfolded. Then, manually or based on rotating the ribbed steel bar (5), cause the secondary bifurcated base frame (301) to move downward synchronously and contact the upper surface of the guiding spiral head (101). Then, by further rotating, the two ends of the engagement accommodating cavity are both frustum-shaped under the action of the hinge shaft B (302), causing each group of hinge shafts B (302) to rotate synchronously, so that the secondary extrusion blocks (303) are unfolded. By arranging the contact abutting blocks (3031) on both sides of the secondary extrusion blocks (303), the extended force-bearing blocks (205) are further unfolded outward. The soil layer is inserted through the comb-shaped extended force-bearing blocks (205), and the effective contact surface maintains a good anchoring effect; S500, Disassembly treatment: Then, separate the stressed connection sleeve (8) from the connection installation groove (1015) by rotating and pulling it out; S600, Grouting treatment: Pour the drill hole with cement mortar and rotate the stressed fastening block (7).

Images