CN109882226B - Tensioning locking anchor rod - Google Patents

Tensioning locking anchor rod Download PDF

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Publication number
CN109882226B
CN109882226B CN201910296581.0A CN201910296581A CN109882226B CN 109882226 B CN109882226 B CN 109882226B CN 201910296581 A CN201910296581 A CN 201910296581A CN 109882226 B CN109882226 B CN 109882226B
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rod
arc
barb
cement
hole
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CN201910296581.0A
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CN109882226A (en
Inventor
张亚歌
章慧妍
刘召柱
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HUAINAN JINDE INDUSTRY Co.,Ltd.
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Huainan Jinde Industry Co ltd
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Abstract

The invention belongs to the technical field of anchor rods, and particularly relates to a tension locking anchor rod; comprises an outer rod, a sealing block, a push rod, a fixing barb and a pushing device; the sealing block is positioned inside the outer rod and is provided with a through hole; the section of the push rod is sword-shaped, and the end part of the push rod is clamped with the pushing device; a plurality of first holes are formed in the outer ring of the outer rod, and the first holes on the same side are uniformly distributed; the fixing barbs are all positioned in the first holes; the invention has simple structure and convenient operation, and the cement in the outer rod is more tamped by filling the cement in the outer rod and continuously extruding the cement in the outer rod by utilizing the pushing device, thereby increasing the strength of the outer rod, avoiding the fracture of the anchor rod and reducing the occurrence of accidents.

Description

Tensioning locking anchor rod
Technical Field
The invention belongs to the technical field of anchor rods, and particularly relates to a tension locking anchor rod.
Background
The bolt is the main support form of the mine, and in the process of its development, it produces various deformations, such as grouting bolt, self-drilling bolt, glass fiber reinforced plastic bolt, resin bolt, etc. However, in the process of field practical application, the anchor rod is easy to lose effectiveness due to factors such as insufficient tensile strength and poor shearing resistance, so that great threat is brought to mine safety production, normal production is seriously influenced, and great economic loss is brought to coal mine enterprises. In the existing supporting process of mine roadways, anchor rod-guniting, anchor rod-protective net-anchor cable, anchor rod-grouting-protective net-anchor cable and other combined supporting forms are adopted according to different conditions and positions. However, in the roadway with high surrounding rock stress, large crushing range and serious floor separation, the anchor rod cannot achieve ideal anchoring effect due to the facts that the anchor rod cannot be bent, the friction force with the surrounding rock is small and the like.
Because the common anchor rod has large tensile rigidity and poor shearing resistance, enough elastic deformation cannot be provided. Under the environment of soft rock, high stress and the like, because the self characteristics of the common anchor rod can not adapt, the anchor rod and surrounding rock are pulled off, the anchor rod is pulled apart, the tray fails, the grouting body is pulled apart or crushed, the bonding fails and the anchor is lost, and the like.
In order to fully exert the self-bearing capacity of the surrounding rock when the mining influence is severe, the rock stratum moves in a staggered manner and the ground stress is large, the anchor rod has enough elasticity and strength. Particularly, when rock strata are dislocated, the anchor rod can adapt to the movement of the rock strata within a certain range, and the performance of the anchor rod can still be exerted when transverse and longitudinal deformation occurs.
At present, through improvement of anchor rods, such as expansion anchor rods, expansion extensible anchor rods, tube seam type anchor rods, elastic and flexible anchor rods and the like, the anchor rods have respective defects to a certain extent, so that another anchor rod is designed, but the anchor rod still has defects, on one hand, the strength of the anchor rod is not high, the anchor rod is easy to break when a mine is supported, the anchor rod needs to be detected and replaced, the subsequent operation time is prolonged, and accidents are easy to occur; on the other hand, the anchor rod cannot be tightly attached to the drilled hole, so that the anchor rod is easy to shake when supporting a mine, and the supporting effect of the anchor rod is influenced; so that the technical solution is limited.
Disclosure of Invention
In order to make up the defects of the prior art, the problems that the strength of the anchor rod is not high and the anchor rod is easy to shake are solved; the invention provides a tension locking anchor rod.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a tension locking anchor rod, which comprises an outer rod, a sealing block, a push rod, a fixing barb and a pushing device, wherein the outer rod is fixedly connected with the sealing block; the sealing block is positioned inside the outer rod, and is provided with a through hole for introducing cement; the section of the push rod is in a sword shape, the end part of the push rod is clamped with the pushing device, the pushing device is convenient to take after cement in the outer rod is extruded by the pushing device through clamping, so that the multiple anchor rods are installed by one pushing device, the pushing device is positioned outside the outer rod, and when the cement is introduced into the outer rod from the through hole in the sealing block, the sealing block is pushed through the mutual matching between the pushing device and the push rod, so that the cement in the outer rod is tamped; a plurality of first holes are formed in the outer ring of the outer rod, and the first holes on the same side are uniformly distributed; the fixing barbs are all positioned in the first hole, the outer walls of the fixing barbs are fixedly connected with the inner wall of the first hole, and the fixing barbs are used for positioning the anchor rod in the drilled hole, ensuring the centering of the outer rod and realizing the supporting effect of the anchor rod; when the tension locking anchor rod is adopted, firstly, a hole is drilled on the rock wall of a mine, then the tension locking anchor rod is placed into the drilled hole, then cement is poured into the outer rod through the through hole on the sealing block, when the cement in the outer rod is contacted with the sealing block, one end of the push rod is inserted into the through hole in the sealing block, the cement in the outer rod is prevented from flowing back from the through hole on the sealing block, then the push rod is applied with thrust force through the pushing device, the push rod extrudes the sealing block to move towards one side far away from the pushing device, the volume in the outer rod is reduced, the cement in the outer rod is enabled to be more tamped, when the volume in the outer rod is not changed, the pushing device is driven reversely, the push rod is taken away from the through hole on the sealing block, the cement is continuously poured into the outer rod, the cement in the outer rod is continuously extruded by the pushing device, and after the outer rod is completely filled with the cement, and stopping pouring cement into the outer rod, taking the pushing device away from the anchor rod, and pouring cement into the outer rod to increase the strength of the outer rod and realize safe support of the anchor rod to the mine.
Preferably, the cross section of the fixing barb is in a trapezoid shape, the opening of the trapezoid fixing barb is inward, and the fixing barb consists of a rubber shell and a metal shell; the rubber shell is positioned on the inner side of the metal shell, the outer wall of the rubber shell is fixedly connected with the inner wall of the metal shell, the metal shell is provided with a communication hole, a first channel is arranged in the rubber shell, water is filled in the first channel, the rubber shell and the communication hole are communicated through a sand hole, the rubber shell is not communicated with the communication hole in an initial state, the water in the first channel does not flow out, and cement is introduced into a gap between the outer rod and the hole through the communication hole; through the design, on one hand, in the process of extruding the cement in the outer rod by utilizing the pushing device, a part of cement in the outer rod is extruded out from the communicating hole, so that the filling of the gap between the outer wall of the outer rod and the drilled hole is realized, and the stability of the outer rod is enhanced; meanwhile, the design increases the cement extrusion force, so that the cement is extruded farther, the filling of a plurality of gaps is realized, and barbs can be formed, thereby improving the practicability of the anchor rod; on the other hand, through this kind of design for the water blowout in the one number passageway avoids the too early drying of cement, moistens cement through spun water, makes cement play better effect.
Preferably, a pair of rotating plates is arranged at the end part of each fixing barb; the two rotating plates are rotatably arranged on the fixed barbs, and in an initial state, the two rotating plates are respectively attached to the outer walls of the fixed barbs, and cement is extruded from the communication holes to push the two rotating plates to rotate, so that the contact area between the two rotating plates and drilled holes is increased; according to the invention, by adopting the design, when cement is extruded from the communicating hole, the extruded cement acts on the rotating plate and pushes the rotating plate to rotate, so that the rotating plate is tightly attached to the inner wall of the drilled hole, the contact area is increased, the friction force between the rotating plate and the drilled hole is improved, the anchor rod is prevented from falling off, and the stability of the anchor rod is improved.
Preferably, a group of clamping units are uniformly arranged on the rotating plate; the clamping unit is used for preventing the anchor rod from falling off and comprises a limiting block and a clamping barb; the limiting block is fixedly connected to the rotating plate; the clamping barbs are hinged on the rotating plate and positioned between the two limiting blocks, and the anchor rod is prevented from falling off through the mutual matching between the limiting blocks and the clamping barbs; through the design, on one hand, when the rotating plate rotates to be on the same plane with the inner wall of the drilled hole, the clamping force between the rotating plate and the drilled hole wall is increased through the action of the clamping unit, the rotating plate is prevented from shaking, cement can better act on the rotating plate, the rotating plate is enabled to be in close contact with the drilled hole wall, and the stability of anchor rod support is improved; on the other hand, rotate through the stopper to the chucking barb and carry on spacingly, avoid the chucking barb rotation range too big, lose the chucking again to the mine cliff to the practicality of this stock has been improved.
Preferably, the clamping barbs are integrally formed, and the cross-sectional shapes of the clamping barbs are composed of a first arc, a second arc, a third arc and a fourth arc; one end of the first arc is connected with the third arc, the joint is in smooth transition, the other end of the first arc is connected with the second arc, and the joint forms a tip; one end of the third arc is connected with the fourth arc, a tip is formed at the joint, the other end of the third arc is connected with the second arc, and the joint is in smooth transition; by the design, the clamping barbs with the cross section shapes are utilized to tightly clamp the rock wall of the mine, so that the stability of anchor rod support is improved; promote the rotor plate pivoted in-process at cement for on the chucking barb of a end inserted the cliff of mine, simultaneously, the cliff of mine gives a reverse effort of a end chucking barb, because the chucking barb articulates on the rotor plate, makes the chucking barb take place to rotate, and makes the chucking barb of b end insert on the cliff of mine.
Preferably, the included angle between the second arc and the fourth arc is 60 degrees; through the design, the clamping barbs are more tightly inserted into the rock wall of the mine, the position of the anchor rod is unique after installation, the rock of the anchor rod is avoided, and the stability of anchor rod support is improved.
Preferably, the clamping barbs comprise mounting blocks, a first rope, a second rope, a first folding spring and a second folding spring; the mounting block is hinged on the rotating plate; one ends of the first rope and the second rope are fixedly connected to the mounting block, and the other ends of the first rope and the second rope are connected with each other; the first folding spring is clamped in the area of the first rope and the mounting block; the second folding spring is clamped in the area of the second rope and the mounting block; the limiting block is provided with a cutting edge; the first rope is cut off by the cutting edge on the limiting block through the rotation of the clamping barb, so that the first folding spring and the second folding spring are unfolded, and the clamping force is increased; according to the design, when the first rope is cut off by the cutting edge on the limiting block, the clamping barbs at the a end and the b end are inserted into the rock wall of the mine, at the moment, after the first rope is cut off by the cutting edge on the limiting block, the first folding spring and the second folding spring are unfolded and tightly grip the rock inserted into the rock wall of the mine, and the strength and the flexibility of the first folding spring and the second folding spring are enhanced.
The invention has the following beneficial effects:
1. the tension locking anchor rod is simple in structure and convenient to operate, cement is filled into the outer rod, and the cement in the outer rod is extruded by the aid of the pushing device continuously, so that the cement in the outer rod is tamped, the strength of the outer rod is increased, breakage of the anchor rod is avoided, and accidents are reduced.
2. According to the tension locking anchor rod, the intercommunicating hole is matched with the pushing device, so that cement in the outer rod is extruded out from the intercommunicating hole, gaps between the outer wall of the outer rod and drilled holes are filled, the anchor rod is prevented from shaking, and the safety of the anchor rod in supporting a mine is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged fragmentary view at B of FIG. 1 in operation;
FIG. 4 is a view at C of FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 3 at D;
FIG. 6 is an enlarged view of a portion of FIG. 3 at E;
in the figure: the outer rod 1, the sealing block 2, the push rod 3, the fixing barb 4, the rubber shell 41, the metal shell 42, the communicating hole 43, the first channel 44, the rotating plate 5, the clamping unit 6, the limiting block 61, the clamping barb 62, the first arc 621, the second arc 622, the third arc 623, the fourth arc 624, the mounting block 63, the first rope 64, the second rope 65, the first folding spring 66 and the second folding spring 67.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the tension locking anchor rod of the present invention comprises an outer rod 1, a sealing block 2, a push rod 3, a fixing barb 4 and a pushing device; the sealing block 2 is positioned inside the outer rod 1, and a through hole is formed in the sealing block 2 and used for introducing cement; the section of the push rod 3 is sword-shaped, the end part of the push rod 3 is clamped with the pushing device, through clamping, after cement in the outer rod 1 is extruded by the pushing device, the pushing device is convenient to take, so that one pushing device can realize the installation of a plurality of anchor rods, the pushing device is positioned outside the outer rod 1, when the cement is introduced into the outer rod 1 from the through hole on the sealing block 2, the sealing block 2 is pushed through the mutual matching between the pushing device and the push rod 3, and the cement in the outer rod 1 is tamped; a plurality of first holes are formed in the outer ring of the outer rod 1, and the first holes on the same side are uniformly distributed; the fixing barbs 4 are all positioned in the first hole, the outer walls of the fixing barbs 4 are fixedly connected with the inner wall of the first hole, and the fixing barbs 4 are used for positioning the anchor rod in the drilled hole, ensuring the centering of the outer rod 1 and realizing the supporting effect of the anchor rod; when the tension locking anchor rod is adopted, firstly, a hole is drilled on the rock wall of a mine, then the tension locking anchor rod is placed into the drilled hole, cement is poured into the outer rod 1 through the through hole on the sealing block 2, when the cement in the outer rod 1 is contacted with the sealing block 2, one end of the push rod 3 is inserted into the through hole in the sealing block 2, the cement in the outer rod 1 is prevented from flowing back from the through hole on the sealing block 2, then thrust is applied to the push rod 3 through the pushing device, the push rod 3 extrudes the sealing block 2 to move towards one side far away from the pushing device, the volume in the outer rod 1 is reduced, the cement in the outer rod 1 is tamped, when the volume in the outer rod 1 is not changed, the pushing device is driven reversely, the push rod 3 is separated from the through hole on the sealing block 2, the cement is continuously poured into the outer rod 1, and the cement in the outer rod 1 is continuously extruded by the pushing device, and after the outer rod 1 is completely filled with cement, stopping pouring the cement into the outer rod 1, taking the pushing device away from the anchor rod, and pouring the cement into the outer rod 1 to increase the strength of the outer rod 1 and realize the safe support of the anchor rod on the mine.
As an embodiment of the present invention, the cross-sectional shape of the fixing barb 4 is a trapezoid shape, and the opening of the trapezoid fixing barb 4 is inward, and the fixing barb 4 is composed of a rubber shell 41 and a metal shell 42; the rubber shell 41 is positioned on the inner side of the metal shell 42, the outer wall of the rubber shell 41 is fixedly connected with the inner wall of the metal shell 42, a communicating hole 43 is formed in the metal shell 42, a channel 44 is arranged in the rubber shell 41, water is filled in the channel 44, the rubber shell 41 and the communicating hole 43 are communicated by sand holes, the rubber shell 41 is not communicated with the communicating hole 43 in an initial state, the water in the channel 44 does not flow out, and cement is introduced into a gap between the outer rod 1 and the hole through the communicating hole 43; through the design, on one hand, in the process of extruding the cement in the outer rod 1 by utilizing the pushing device, a part of the cement in the outer rod 1 is extruded out from the communication hole 43, so that the filling of a gap between the outer wall of the outer rod 1 and a drilled hole is realized, and the stability of the outer rod is enhanced; meanwhile, the design increases the cement extrusion force, so that the cement is extruded farther, the filling of a plurality of gaps is realized, and barbs can be formed, thereby improving the practicability of the anchor rod; on the other hand, through this kind of design for the water in the No. one passageway 44 spouts, avoids the too early drying of cement, moistens cement through the water that spouts, makes cement play better effect.
As an embodiment of the present invention, the end of each of the fixing barbs 4 is provided with a pair of rotating plates 5; the two rotating plates 5 are rotatably arranged on the fixed barbs 4, in an initial state, the two rotating plates 5 are respectively attached to the outer walls of the fixed barbs 4, cement is extruded from the communication holes 43 to push the two rotating plates 5 to rotate, and the contact area between the two rotating plates and drilled holes is increased; according to the invention, by adopting the design, when cement is extruded from the communication hole 43, the extruded cement acts on the rotating plate 5 and pushes the rotating plate 5 to rotate, so that the rotating plate 5 is tightly attached to the inner wall of the drilled hole, the contact area is increased, the friction force between the rotating plate 5 and the drilled hole is improved, the anchor rod is prevented from falling off, and the stability of the anchor rod is improved.
As an embodiment of the present invention, a set of clamping units 6 is uniformly arranged on the rotating plate 5; the clamping unit 6 is used for preventing the anchor rod from falling off, and the clamping unit 6 comprises a limiting block 61 and a clamping barb 62; the limiting block 61 is fixedly connected to the rotating plate 5; the clamping barbs 62 are hinged on the rotating plate 5, the clamping barbs 62 are positioned between the two limiting blocks 61, and the anchor rod is prevented from falling off through the mutual matching of the limiting blocks 61 and the clamping barbs 62; through the design, on one hand, when the rotating plate 5 rotates to be in the same plane with the inner wall of the drilled hole, the clamping force between the rotating plate and the drilled hole wall is increased through the action of the clamping unit 6, the swinging of the rotating plate 5 is avoided, cement can better act on the rotating plate 5, the rotating plate 5 is enabled to be in close contact with the drilled hole wall, and the stability of anchor rod support is improved; on the other hand, rotation through stopper 61 to chucking barb 62 is spacing, avoids chucking barb 62 rotation range too big, loses the chucking again to the mine cliff to the practicality of this stock has been improved.
As an embodiment of the invention, the chuck barbs 62 are integrally formed, and the cross-sectional shape of the chuck barbs 62 is composed of a first arc 621, a second arc 622, a third arc 623 and a fourth arc 624; one end of the first arc 621 is connected with the third arc 623, the connection part is in smooth transition, the other end of the first arc 621 is connected with the second arc 622, and the connection part forms a tip; one end of the third arc 623 is connected with the fourth arc 624, a tip is formed at the joint, the other end of the third arc 623 is connected with the second arc 622, and the joint is in smooth transition; through the design, the clamping barbs 62 with the cross section are utilized to tightly clamp the rock wall of the mine, so that the stability of anchor rod support is improved; promote rotor plate 5 pivoted in-process at cement for on the cliff wall of mine is inserted to the chucking barb 62 of a end, simultaneously, the cliff wall of mine gives a end chucking barb 62 reverse acting force, because chucking barb 62 articulates on rotor plate 5, makes chucking barb 62 take place to rotate, and makes the chucking barb 62 of b end insert on the cliff wall of mine.
As an embodiment of the present invention, an included angle between the second arc 622 and the fourth arc 624 is 60 °; through the design, the clamping barbs 62 are more tightly inserted into the rock wall of the mine, the position of the anchor rod is unique after installation, the anchor rod is prevented from shaking, and the stability of anchor rod support is improved.
As an embodiment of the present invention, the chuck barb 62 is composed of a mounting block 63, a first rope 64, a second rope 65, a first folding spring 66 and a second folding spring 67; the mounting block 63 is hinged on the rotating plate 5; one ends of the first rope 64 and the second rope 65 are fixedly connected to the mounting block 63, and the other ends are mutually connected; the first folding spring 66 is clamped in the area of the first rope 64 and the mounting block 63; the second folding spring 67 is clamped in the area of the second rope 65 and the mounting block 63; a cutting edge is formed on the limiting block 61; the first rope 64 is cut off by the cutting edge on the limiting block 61 through the rotation of the clamping barb 62, so that the first folding spring 66 and the second folding spring 67 are unfolded, and the clamping force is increased; according to the design, when the first rope 64 is cut off by the cutting edge on the limiting block 61, the clamping barbs 62 at the ends a and b are inserted into the rock wall of the mine, at the moment, after the first rope 64 is cut off by the cutting edge on the limiting block 61, the first folding spring 66 and the second folding spring 67 are unfolded and grasp the rock inserted into the rock wall of the mine, and the strength and flexibility of the first folding spring 66 and the second folding spring 67 are enhanced.
When the tension locking anchor rod is in work, firstly, a hole is drilled in the rock wall of a mine, then the tension locking anchor rod is placed into the drilled hole, cement is poured into the outer rod 1 through the through hole in the sealing block 2, when the cement in the outer rod 1 is contacted with the sealing block 2, one end of the push rod 3 is inserted into the through hole in the sealing block 2, the cement in the outer rod 1 is prevented from flowing back from the through hole in the sealing block 2, then the push rod 3 is pushed by the pushing device, the sealing block 2 is pushed by the push rod 3 to move towards one side far away from the pushing device, the volume in the outer rod 1 is reduced, the cement in the outer rod 1 is enabled to be more tamped, when the volume in the outer rod 1 is not changed, the pushing device is driven reversely, the push rod 3 is taken away from the through hole in the sealing block 2, the cement is continuously poured into the outer rod 1, and the cement in the outer rod 1 is continuously extruded by the pushing device, after the outer rod 1 is completely filled with cement, stopping filling the cement into the outer rod 1, taking the pushing device away from the anchor rod, and filling the cement into the outer rod 1 to increase the strength of the outer rod 1 and realize the safe support of the anchor rod on a mine; when the pushing device is used for extruding cement in the outer rod 1, a part of the cement in the outer rod 1 is extruded out from the communicating hole 43 on the fixing barb 4, the extruded cement seals a gap between the outer wall of the outer rod 1 and a drilled hole, and the extruded cement acts on the rotating plate 5, so that the rotating plate 5 rotates and is positioned on the same horizontal plane with the inner wall of the drilled hole; promote rotor plate 5 pivoted in-process at cement for on the cliff wall of mine is inserted to the chucking barb 62 of a end, simultaneously, the cliff wall of mine gives 62 reverse acting forces of a end chucking barb, because chucking barb 62 articulates on rotor plate 5, makes chucking barb 62 take place to rotate, and makes the chucking barb 62 of b end insert on the cliff wall of mine, thereby has improved the stability that the stock supported.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.

Claims (4)

1. A stretch-draw locking stock which characterized in that: comprises an outer rod (1), a sealing block (2), a push rod (3), a fixing barb (4) and a pushing device; the sealing block (2) is positioned inside the outer rod (1), and a through hole is formed in the sealing block (2) and used for introducing cement; the section of the push rod (3) is in a sword shape, the end part of the push rod (3) is clamped with the pushing device, the pushing device is positioned outside the outer rod (1), and when cement is introduced into the outer rod (1) from the through hole in the sealing block (2), the sealing block (2) is pushed through the mutual matching between the pushing device and the push rod (3), so that the cement in the outer rod (1) is tamped; a plurality of first holes are formed in the outer ring of the outer rod (1), and the first holes on the same side are uniformly distributed; the fixing barbs (4) are all positioned in the first hole, the outer wall of each fixing barb (4) is fixedly connected with the inner wall of the first hole, and the fixing barbs (4) are used for positioning the anchor rod in the drilled hole, ensuring the centering of the outer rod (1) and realizing the supporting effect of the anchor rod;
the cross section of each fixing barb (4) is trapezoidal, the opening of each trapezoidal fixing barb (4) is inward, and each fixing barb (4) is composed of a rubber shell (41) and a metal shell (42); the rubber shell (41) is positioned on the inner side of the metal shell (42), the outer wall of the rubber shell (41) is fixedly connected with the inner wall of the metal shell (42), a communicating hole (43) is formed in the metal shell (42), a first channel (44) is arranged in the rubber shell (41), water is filled in the first channel (44), the rubber shell (41) and the communicating hole (43) are communicated through a sand hole, the rubber shell (41) is not communicated with the communicating hole (43) in an initial state, the water in the first channel (44) does not flow out, and cement is introduced into a gap between the outer rod (1) and the inner hole through the communicating hole (43);
a pair of rotating plates (5) is arranged at the end part of each fixing barb (4); the two rotating plates (5) are rotatably arranged on the fixed barbs (4), and in an initial state, the two rotating plates (5) are respectively attached to the outer walls of the fixed barbs (4) and are extruded out from the communication holes (43) through cement to push the two rotating plates (5) to rotate, so that the contact area between the two rotating plates and drilled holes is increased;
a group of clamping units (6) are uniformly arranged on the rotating plate (5); the clamping unit (6) is used for preventing the anchor rod from falling off, and the clamping unit (6) comprises a limiting block (61) and a clamping barb (62); the limiting block (61) is fixedly connected to the rotating plate (5); chucking barb (62) articulate on rotor plate (5), and chucking barb (62) are located between two stopper (61), through mutually supporting between stopper (61) and chucking barb (62), avoid droing of stock.
2. A tension lock bolt as defined in claim 1, wherein: the cross section of the clamping barb (62) is formed by a first arc (621), a second arc (622), a third arc (623) and a fourth arc (624); one end of the first arc (621) is connected with the third arc (623), the connection part is in smooth transition, the other end of the first arc (621) is connected with the second arc (622), and a tip is formed at the connection part; one end of the third arc (623) is connected with the fourth arc (624), a tip is formed at the joint, the other end of the third arc (623) is connected with the second arc (622), and the joint is in smooth transition.
3. A tension lock bolt as defined in claim 2, wherein: the included angle between the second arc (622) and the fourth arc (624) is 60 degrees.
4. A tension lock bolt as defined in claim 2, wherein: the clamping barb (62) consists of an installation block (63), a first rope (64), a second rope (65), a first folding spring (66) and a second folding spring (67); the mounting block (63) is hinged on the rotating plate (5); one ends of the first rope (64) and the second rope (65) are fixedly connected to the mounting block (63), and the other ends are connected with each other; the first folding spring (66) is clamped in the area of the first rope (64) and the mounting block (63); the second folding spring (67) is clamped in the area of the second rope (65) and the mounting block (63); a cutting edge is formed on the limiting block (61); rotate through chucking barb (62), utilize the blade on stopper (61) to cut rope (64) No. one for No. one folding spring (66) and No. two folding spring (67) expand, increase chucking dynamics.
CN201910296581.0A 2019-04-13 2019-04-13 Tensioning locking anchor rod Active CN109882226B (en)

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Application Number Priority Date Filing Date Title
CN201910296581.0A CN109882226B (en) 2019-04-13 2019-04-13 Tensioning locking anchor rod

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Application Number Priority Date Filing Date Title
CN201910296581.0A CN109882226B (en) 2019-04-13 2019-04-13 Tensioning locking anchor rod

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CN109882226A CN109882226A (en) 2019-06-14
CN109882226B true CN109882226B (en) 2020-10-27

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US8894329B1 (en) * 2013-05-31 2014-11-25 Climb Tech, LLC. Wedge anchor bolt
CN106567384B (en) * 2016-11-14 2018-08-24 合肥工业大学 A kind of herring-bone form anchor pole
CN206860216U (en) * 2017-06-24 2018-01-09 南京金宸建筑设计有限公司 A kind of Pulling-Resistant Anchor Rod
CN207261027U (en) * 2017-09-18 2018-04-20 西安科技大学 A kind of Novel threaded anchor pole hangnail device
CN208633856U (en) * 2018-06-22 2019-03-22 吉林省送变电工程有限公司 A kind of power transmission sequence base expanding and base expanding anchor pole
CN108756979A (en) * 2018-06-29 2018-11-06 武汉科技大学 A kind of overall length reverse wedge formula prestressed anchor and its application method
CN208518692U (en) * 2018-07-15 2019-02-19 山东科技大学 A kind of intumescent combination grouted anchor bar
CN208619139U (en) * 2018-07-16 2019-03-19 江西万达矿山设备有限责任公司 A kind of multifunction mine anchor shaft anchor cable

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