Anchor rod for tunnel supporting

Abstract

The invention discloses an anchor rod for tunnel supporting, and relates to the technical field of anchor rods, the anchor rod comprises an upper rod, the surface of the upper rod is rotatably connected with a rotating nut through a thread, the surface of the rotating nut is fixedly provided with a blocking cover, and the lower end of the upper rod is rotatably connected with a connecting sleeve through a thread; the lower end of the connecting sleeve is rotatably connected with a lower rod through threads, a barrel is fixed to the lower end of the lower rod, the surface of the barrel is rotatably connected with a locking rod, and the middle end of the locking rod is rotatably connected with a push rod. After the anchor rod is placed, the anchor rod can be extruded on the inner wall of a hole, the number of force bearing points of the anchor rod is increased, when the anchor rod is pulled outwards, the angle between the locking rod and the cylinder is increased, the stability degree is further increased, meanwhile, the surface of the stop-grouting plug can be better attached to the hole opening through the elastic plate made of elastic materials and the outer pipe, and the sealing effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor rods, and in particular to an anchor rod for tunnel support. Background Art

[0002] A tunnel anchor is a tensile member that penetrates deep into the ground. It is mainly used to reinforce the rock or soil around the tunnel, improve the mechanical properties of the surrounding rock, and improve its stress state. One end of the anchor is connected to the engineering structure in the tunnel, and the other end penetrates deep into the ground. Through prestress and bonding force, the surrounding rock and the engineering structure are tightly connected together to form a stable overall structure.

[0003] The existing anchor rod is hammered into the hole with an anchor head made of elastic material by a hammer slurry, and the stability of the anchor rod is ensured by the friction between the hole, the anchor head and the anchor rod. However, when the surface of the anchor rod is subjected to a large force, the cat head made of elastic material is pulled and deformed, causing the anchor rod to be pulled out, affecting the safety of people inside the tunnel. Therefore, an anchor rod for tunnel support is proposed to solve the above problem. Summary of the invention

[0004] The present invention provides an anchor rod for tunnel support, which solves the above technical problems.

[0005] To solve the above technical problems, the present invention provides an anchor rod for tunnel support, comprising an upper rod, the surface of the upper rod is connected to a rotating nut by a thread, the surface of the rotating nut is fixed with a blocking cover, the lower end of the upper rod is connected to a connecting sleeve by a thread, the lower end of the connecting sleeve is connected to a lower rod by a thread, the lower end of the lower rod is fixed with a cylinder, the surface of the cylinder is connected to a locking rod by rotation, the middle end of the locking rod is connected to a push rod by rotation, the push rod is connected to a sliding rod by sliding inside, a spring is fixed to one end of the sliding rod inside the push rod, the other end of the spring relative to the sliding rod is fixed to the push rod, the other end of the sliding rod relative to the push rod is fixed with a connecting block, and the connecting block is connected to the cylinder by rotation.

[0006] Preferably, the outer surface of the upper rod is slidably connected to an inner tube, the inner tube is located below the blocking cover, an elastic plate is fixed to the outer surface of the inner tube, an outer tube is fixed to the other end of the elastic plate relative to the inner tube, and the outer tube and the elastic plate are made of elastic material.

[0007] Preferably, an upper transmission rod is sleeved inside the upper rod, an upper rotating plate is fixed to the lower end of the upper transmission rod, a power rod is fixed to the other end of the upper transmission rod opposite to the upper rotating plate, and a fixing nut is fixed to the top of the upper rod.

[0008] Preferably, a linkage column is sleeved inside the lower rod, a lower rotating plate is fixed to the upper end of the linkage column, a hexagonal column is slidably connected to the lower end of the linkage column, and a top plate is fixed to the lower end of the hexagonal column.

[0009] Preferably, a rotating tube is fixed on the surface of the top plate, the rotating tube is arranged outside the linkage column, and a thread groove is arranged at the lower end of the cylinder, and the thread groove is connected to the rotating tube through threaded rotation.

[0010] Preferably, inclined plates are fixed on the surfaces of the upper rotating plate and the lower rotating plate, and the inclined plates on the surfaces of the upper rotating plate and the lower rotating plate are engaged with each other.

[0011] Preferably, the upper end of the locking rod is a pointed end, and the upper end of the locking rod is higher than the upper end surface of the cylinder.

[0012] Preferably, a positioning block is provided in an annular shape on the outer surface of the cylinder, and the positioning block is arranged obliquely relative to the cylinder, and the cylinder is inclined toward the position of the lower rod.

[0013] Preferably, hollow grooves are provided inside the upper rod and the lower rod, and an upper transmission rod and a linkage column are respectively sleeved in the hollow grooves inside the upper rod and the lower rod.

[0014] Preferably, the outer diameters of the upper rotating plate and the lower rotating plate are both larger than the diameters of the hollow grooves inside the upper rod and the lower rod.

[0015] Compared with the related art, the tunnel support anchor provided by the present invention has the following beneficial effects:

[0016] 1. The present invention changes the position of the locking rod through a push rod, a sliding rod and a spring, so that the locking rod can be compressed when placed in the hole, and can be squeezed on the inner wall of the hole after placement, thereby increasing the supporting points of the anchor rod. Moreover, when the anchor rod is pulled outward, the angle between the locking rod and the cylinder is enlarged, and the stability is further increased. At the same time, the surface of the slurry stopper can better fit the hole opening through the elastic plate and the outer tube of the elastic material, thereby ensuring the sealing effect.

[0017] 2. The upper rod and the lower rod of the present invention are connected to the connecting sleeve through a thread, so that the upper rotating plate and the lower rotating plate are clamped, and a wrench controls the position of the fixing nut. Another wrench is used to pry the power rod to rotate. The rotation of the power rod drives the upper transmission rod to rotate, and the rotation of the upper transmission rod drives the upper rotating plate to rotate. The upper rotating plate drives the lower rotating plate to rotate. The rotation of the lower rotating plate drives the linkage column to rotate. The rotation of the linkage column drives the top plate to rotate through the hexagonal column. The rotation of the top plate drives the rotating tube to rotate. The rotating tube moves downward inside the locking cylinder through the thread on the surface. The hexagonal column slides downward inside the linkage column, and the top plate is squeezed at the bottom of the hole to ensure the stable fixation of the anchor rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the main structure diagram of the present invention;

[0019] Figure 2 It is a side structural diagram of the present invention;

[0020] Figure 3 For the present invention Figure 1 The structural diagram of part A;

[0021] Figure 4 It is a cross-sectional structural diagram of the connecting block in the present invention;

[0022] Figure 5 It is a structural diagram of the pulp stop plug of the present invention;

[0023] Figure 6 It is a cross-sectional structural diagram of the connecting sleeve in the present invention;

[0024] Figure 7 This is a diagram of the internal structure of the connecting sleeve in the present invention;

[0025] Figure 8 It is a cross-sectional structural diagram of the upper rod in the present invention;

[0026] Fig. 9 It is a structural diagram of the lower transmission rod in the present invention;

[0027] Fig.10 It is a cross-sectional structural diagram of the lower rod in the present invention;

[0028] Fig.11 It is a cross-sectional structural diagram of the rotating tube in the present invention;

[0029] Fig.12 It is a cross-sectional structural diagram of the linkage column in the present invention.

[0030] Numbers in the figure: 1. blocking cover; 2. slurry stopper; 3. upper rod; 4. connecting sleeve; 5. lower rod; 6. rotating nut; 7. fixing nut; 8. upper power rod; 9. locking cylinder; 91. locking rod; 92. push rod; 93. connecting block; 94. cylinder; 95. sliding rod; 96. spring; 21. outer tube; 22. elastic plate; 23. inner tube; 81. upper rotating plate; 82. power rod; 83. upper transmission rod; 10. lower transmission rod; 101. lower rotating plate; 102. top plate; 103. linkage column; 104. rotating tube; 105. hexagonal column. DETAILED DESCRIPTION

[0031] Embodiment 1, by Figure 1-5The present invention includes an anchor rod for tunnel support, including an upper rod 3, the surface of the upper rod 3 is connected to a rotating nut 6 by a thread, the surface of the rotating nut 6 is fixed with a blocking cover 1, the lower end of the upper rod 3 is connected to a connecting sleeve 4 by a thread, the lower end of the connecting sleeve 4 is connected to a lower rod 5 by a thread, the lower end of the lower rod 5 is fixed with a cylinder 94, the surface of the cylinder 94 is connected to a locking rod 91 by rotation, the middle end of the locking rod 91 is connected to a push rod 92 by rotation, the push rod 92 is connected to a sliding rod 95 by sliding inside, a spring 96 is fixed to one end of the sliding rod 95 inside the push rod 92, the other end of the spring 96 relative to the sliding rod 95 is fixed to the push rod 92, the other end of the sliding rod 95 relative to the push rod 92 is fixed with a connecting block 93, and the connecting block 93 is connected to the cylinder 94 by rotation.

[0032] The outer surface of the upper rod 3 is slidably connected to the inner tube 23, and the inner tube 23 is located below the blocking cover 1. The outer surface of the inner tube 23 is fixed with an elastic plate 22, and the other end of the elastic plate 22 relative to the inner tube 23 is fixed with an outer tube 21. The outer tube 21 and the elastic plate 22 are made of elastic material.

[0033] The upper end of the locking rod 91 is a pointed end, and the upper end of the locking rod 91 is higher than the upper end surface of the cylinder 94 .

[0034] A positioning block is provided in an annular shape on the outer surface of the cylinder 94 . The positioning block is tilted relative to the cylinder 94 , and the cylinder 94 is tilted toward the position of the lower rod 5 .

[0035] The anchor rod is inserted into the drilled hole, the locking rod 91 is squeezed, the sliding rod 95 slides inside the push rod 92, the spring 96 is deformed, and the locking rod 91 rotates relative to the cylinder 94, so that the locking rod 91 fits with the surface of the cylinder 94, and the locking cylinder 9 is inserted into the bottom of the hole. After the locking cylinder 9 touches the bottom of the hole, the spring 96 pushes out the sliding rod 95, and the available length of the push rod 92 and the connecting block 93 is extended, and the locking rod 91 is unfolded. The locking rod 91 is supported inside the hole, and the grouting plug 2 is inserted into the surface of the upper rod 3, and the rotating nut 6 is installed on the surface of the upper rod 3. The rotating nut 6 is turned by a wrench, and the rotating nut 6 moves downward on the surface of the upper rod 3, and the blocking cover 1 presses the grouting plug 2 into the hole to complete the fixation of the anchor rod. The anchor rod is inserted into the drilled hole, the locking rod 91 is squeezed, the sliding rod 95 slides inside the push rod 92, the spring 96 is deformed, and the locking rod 91 rotates relative to the cylinder 94, so that the locking rod 91 fits with the surface of the cylinder 94, and the locking cylinder 9 is inserted into the bottom of the hole. After the locking cylinder 9 touches the bottom of the hole, the spring 96 pushes out the sliding rod 95, and the available length of the push rod 92 and the connecting block 93 is extended, and the locking rod 91 is unfolded. The locking rod 91 is supported inside the hole, and the grouting plug 2 is inserted into the surface of the upper rod 3, and the rotating nut 6 is installed on the surface of the upper rod 3. The rotating nut 6 is rotated by a wrench, and the rotating nut 6 moves downward on the surface of the upper rod 3, and the blocking cover 1 presses the grouting plug 2 into the hole to complete the fixation of the anchor rod.

[0036] Embodiment 2, by Figure 1-12 The present invention includes an anchor rod for tunnel support, including an upper rod 3, the surface of the upper rod 3 is connected to a rotating nut 6 by a thread, the surface of the rotating nut 6 is fixed with a blocking cover 1, the lower end of the upper rod 3 is connected to a connecting sleeve 4 by a thread, the lower end of the connecting sleeve 4 is connected to a lower rod 5 by a thread, the lower end of the lower rod 5 is fixed with a cylinder 94, the surface of the cylinder 94 is connected to a locking rod 91 by rotation, the middle end of the locking rod 91 is connected to a push rod 92 by rotation, the push rod 92 is connected to a sliding rod 95 by sliding inside, a spring 96 is fixed to one end of the sliding rod 95 inside the push rod 92, the other end of the spring 96 relative to the sliding rod 95 is fixed to the push rod 92, the other end of the sliding rod 95 relative to the push rod 92 is fixed with a connecting block 93, and the connecting block 93 is connected to the cylinder 94 by rotation.

[0037] An upper transmission rod 83 is sleeved inside the upper rod 3 , an upper rotating plate 81 is fixed to the lower end of the upper transmission rod 83 , a power rod 82 is fixed to the other end of the upper transmission rod 83 opposite to the upper rotating plate 81 , and a fixing nut 7 is fixed to the top of the upper rod 3 .

[0038] A linkage column 103 is sleeved inside the lower rod 5 , a lower rotating plate 101 is fixed to the upper end of the linkage column 103 , a hexagonal column 105 is slidably connected to the lower end of the linkage column 103 , and a top plate 102 is fixed to the lower end of the hexagonal column 105 .

[0039] A rotating tube 104 is fixed on the surface of the top plate 102 , and the rotating tube 104 is arranged outside the linkage column 103 . A thread groove is arranged at the lower end of the cylinder 94 , and the thread groove is connected to the rotating tube 104 through threaded rotation.

[0040] Inclined plates are fixed on the surfaces of the upper rotating plate 81 and the lower rotating plate 101 , and the inclined plates on the surfaces of the upper rotating plate 81 and the lower rotating plate 101 are engaged with each other.

[0041] A hollow groove is provided inside the upper rod 3 and the lower rod 5 , and an upper transmission rod 83 and a linkage column 103 are respectively sleeved in the hollow grooves inside the upper rod 3 and the lower rod 5 .

[0042] The outer diameters of the upper rotating plate 81 and the lower rotating plate 101 are both larger than the diameters of the hollow grooves inside the upper rod 3 and the lower rod 5 .

[0043] The upper rod 3 and the lower rod 5 are connected to the connecting sleeve 4 through threads, so that the upper rotating plate 81 and the lower rotating plate 101 are clamped, and the position of the fixing nut 7 is controlled by a wrench, and the power rod 82 is turned with another wrench. The rotation of the power rod 82 drives the upper transmission rod 83 to rotate, and the upper transmission rod 83 drives the upper rotating plate 81 to rotate, and the upper rotating plate 81 drives the lower rotating plate 101 to rotate, and the lower rotating plate 101 drives the linkage column 103 to rotate. The linkage column 103 rotates through the hexagonal column 105 to drive the top plate 102 to rotate, and the top plate 102 rotates to drive the rotating tube 104 to rotate. The rotating tube 104 moves downward inside the locking cylinder 9 through the surface threads, and the hexagonal column 105 slides downward inside the linkage column 103, and the top plate 102 is squeezed at the bottom of the hole to ensure the stable fixation of the anchor rod.

[0044] Working principle: The upper rod 3 and the lower rod 5 are connected to the connecting sleeve 4 through threads, and the upper rotating plate 81 and the lower rotating plate 101 are clamped, and the anchor rod is inserted into the drilled hole, the locking rod 91 is squeezed, and the sliding rod 95 slides inside the push rod 92, and the spring 96 is deformed, and the locking rod 91 rotates relative to the cylinder 94, and the locking rod 91 fits the surface of the cylinder 94, and the locking cylinder 9 is inserted into the bottom of the hole. After the locking cylinder 9 touches the bottom of the hole, the spring 96 pushes the sliding rod 95 out, and the available length of the push rod 92 and the connecting block 93 is extended, and the locking rod 91 is unfolded, and the locking rod 91 is supported in the hole. The stop plug 2 is inserted into the surface of the upper rod 3, and the rotating nut 6 is installed on the surface of the upper rod 3. The rotating nut 6 is turned by a wrench, and the rotating nut 6 moves downward on the surface of the upper rod 3, and the blocking cover 1 presses the stop plug 2 into the hole to complete the fixing of the anchor rod. The anchor rod is inserted into the drilled hole, the locking rod 91 is squeezed, and the sliding rod 95 slides inside the push rod 92, and the spring 96 is deformed, and the locking rod 91 rotates relative to the cylinder 94, and the locking rod 91 fits with the surface of the cylinder 94, and the locking cylinder 9 is inserted into the bottom of the hole. After the locking cylinder 9 touches the bottom of the hole, the spring 96 pushes the sliding rod 95 up When the upper rod 3 and the lower rod 5 are out, the available length of the push rod 92 and the connecting block 93 is extended, the locking rod 91 is unfolded, the locking rod 91 is supported inside the hole, the stop plug 2 is inserted into the surface of the upper rod 3, the rotating nut 6 is installed on the surface of the upper rod 3, and the rotating nut 6 is turned by a wrench, and the rotating nut 6 moves downward on the surface of the upper rod 3, and the blocking cover 1 presses the stop plug 2 inside the hole to complete the fixing of the anchor rod; the upper rod 3 and the lower rod 5 are connected to the connecting sleeve 4 through threads, and the upper rotating plate 81 and the lower rotating plate 101 are clamped, the position of the fixing nut 7 is controlled by a wrench, and the power rod 82 is turned by another wrench. The power rod 82 rotates to drive the upper transmission rod 83 to rotate, the upper transmission rod 83 rotates to drive the upper rotating plate 81 to rotate, the upper rotating plate 81 drives the lower rotating plate 101 to rotate, the lower rotating plate 101 rotates to drive the linkage column 103 to rotate, the linkage column 103 rotates through the hexagonal column 105 to drive the top plate 102 to rotate, the top plate 102 rotates to drive the rotating tube 104 to rotate, the rotating tube 104 moves downward inside the locking cylinder 9 through the surface thread, the hexagonal column 105 slides downward inside the linkage column 103, and the top plate 102 is squeezed at the bottom of the hole to ensure the stable fixation of the anchor rod.

Claims

1. An anchor rod for tunnel support, comprising an upper rod (3), characterized in that: The surface of the upper rod (3) is rotatably connected with a rotating nut (6) through a thread, and a blocking cover (1) is fixed on the surface of the rotating nut (6). The lower end of the upper rod (3) is rotatably connected with a connecting sleeve (4) through a thread, and the lower end of the connecting sleeve (4) is rotatably connected with a lower rod (5) through a thread. The lower end of the lower rod (5) is fixed with a cylinder (94), and the surface of the cylinder (94) is rotatably connected with a locking rod (91). The middle end of the locking rod (91) is rotatably connected with a push rod (92), and the push rod (92) is slidably connected with a sliding rod (95) inside. A spring (96) is fixed at one end of the sliding rod (95) inside the push rod (92), and the other end of the spring (96) relative to the sliding rod (95) is fixedly connected to the push rod (92), and a connecting block (93) is fixed at the other end of the sliding rod (95) relative to the push rod (92), and the connecting block (93) is rotatably connected to the cylinder (94).

2. The anchor rod for tunnel support according to claim 1, characterized in that: The outer surface of the upper rod (3) is slidably connected to an inner tube (23), the inner tube (23) is located below the blocking cover (1), an elastic plate (22) is fixed to the outer surface of the inner tube (23), an outer tube (21) is fixed to the other end of the elastic plate (22) relative to the inner tube (23), and the outer tube (21) and the elastic plate (22) are made of elastic material.

3. The anchor rod for tunnel support according to claim 1, characterized in that: An upper transmission rod (83) is sleeved inside the upper rod (3), an upper rotating plate (81) is fixed to the lower end of the upper transmission rod (83), a power rod (82) is fixed to the other end of the upper transmission rod (83) opposite to the upper rotating plate (81), and a fixing nut (7) is fixed to the top end of the upper rod (3).

4. The tunnel support anchor according to claim 3, characterized in that: A linkage column (103) is sleeved inside the lower rod (5), a lower rotating plate (101) is fixed to the upper end of the linkage column (103), a hexagonal column (105) is slidably connected to the lower end of the linkage column (103), and a top plate (102) is fixed to the lower end of the hexagonal column (105).

5. The tunnel support anchor according to claim 4, characterized in that: A rotating tube (104) is fixed on the surface of the top plate (102), and the rotating tube (104) is arranged outside the linkage column (103). A thread groove is arranged at the lower end of the cylinder (94), and the thread groove is connected to the rotating tube (104) through threaded rotation.

6. The anchor rod for tunnel support according to claim 5, characterized in that: Inclined plates are fixed on the surfaces of the upper rotating plate (81) and the lower rotating plate (101), and the inclined plates on the surfaces of the upper rotating plate (81) and the lower rotating plate (101) are mutually clamped.

7. The anchor rod for tunnel support according to claim 1, characterized in that: The upper end of the locking rod (91) is a pointed end, and the upper end of the locking rod (91) is higher than the upper end surface of the cylinder (94).

8. The anchor rod for tunnel support according to claim 1, characterized in that: The outer surface of the cylinder (94) is provided with a positioning block in an annular shape. The positioning block is arranged obliquely relative to the cylinder (94). The cylinder (94) is inclined toward the position of the lower rod (5).

9. The anchor rod for tunnel support according to claim 4, characterized in that: The upper rod (3) and the lower rod (5) are provided with hollow grooves inside, and the upper transmission rod (83) and the linkage column (103) are respectively sleeved in the hollow grooves inside the upper rod (3) and the lower rod (5).

10. The anchor rod for tunnel support according to claim 9, characterized in that: The outer diameters of the upper rotating plate (81) and the lower rotating plate (101) are both larger than the diameters of the hollow grooves inside the upper rod (3) and the lower rod (5).

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