Built-in resin pre-stressed anchor rod and connecting device

Abstract

The utility model discloses a built-in resin pre-stressed anchor rod and a connecting device, and relates to the technical field of building mechanical parts, two sides of a connecting device body are respectively a supporting section and a connecting section, and the outer diameter of the connecting section is smaller than that of the supporting section; a threaded hole is formed in the axial direction of the connecting device body and penetrates through the supporting section and the connecting section, and a conical reaming section is arranged at the end of the side, away from the connecting section, of the supporting section; by improving the structure of the connecting device body, the situation that due to oscillation, the hollow anchor rod in the resin anchor rod collides with the connecting device or the inner wall of the resin anchor rod, feeding of the hollow anchor rod is affected, and an anchoring agent is assisted to flow out is avoided, and the utility model further provides the built-in resin pre-stressed anchor rod applied to the anchor rod trolley.

Description

TECHNICAL FIELD

[0001] The utility model relates to building machinery part technical field, concretely relates to a built-in resin prestressed anchor rod and connecting device. BACKGROUND

[0002] At present, the resin anchor rod is widely applied in geotechnical and mine and tunnel engineering, especially in mine roadway support system, and has the advantages of simple operation, short solidification time and fast construction speed. The conventional resin anchor rod construction process is: determining the eye position, determining the anchor rod hole position according to the design requirement; drilling, using the pneumatic drill to drill; hole cleaning, blowing the hole with high-pressure air and cleaning the rock powder and accumulated water; filling the resin cartridge, filling the resin cartridge according to the regulation; installing the anchor rod, using the special resin anchor rod installation machine to install the anchor rod; solidifying, waiting for the resin to solidify, then tightening the nut and installing the pad plate.

[0003] Among them, when the resin cartridge is filled into the hollow position of the anchor rod, the anchor rod trolley is used to push the small-diameter hollow anchor rod into the hollow position of the resin anchor rod, push the resin cartridge, until the resin cartridge is extruded and pierced at the end of the resin anchor rod, and enters between the resin anchor rod and the hole wall from the end of the resin anchor rod; when the anchor rod trolley pushes the hollow anchor rod to rotate and enter, the terrain and the pushing of the trolley itself will cause oscillation; therefore, the connecting device needs to be arranged at the end of the resin anchor rod to support the anchor rod, so as to avoid the impact between the hollow anchor rod in the resin anchor rod and the internal thread of the resin anchor rod due to the oscillation, and affect the feeding.

[0004] The utility model with the application number of CN202322428598.1 discloses a built-in extrusion type resin cartridge anchor rod, and the realization principle is that the fat blade is connected with the anchoring segment rod body, the improved resin cartridge is loaded in the anchoring segment rod body, the push connector is connected with the hollow anchor rod body, the air leg type air gun rotates the hollow anchor rod body through the spherical washer and the nut, the resin anchor agent is extruded under the action of the piston, overflowed through the fat blade, the anchoring effect of the rod body and the surrounding rock is realized; but the structure of the connecting device can solve the smooth feeding in the anchoring segment, but the process of the hollow anchor rod entering the push connector still exists the hindrance. SUMMARY

[0005] In order to overcome the defects of the prior art, the utility model aims at providing a built-in resin prestressed anchor rod and connecting device, which improves the structure of the connecting device body, avoids the impact between the hollow anchor rod in the resin anchor rod and the connecting device or the inner wall of the resin anchor rod due to the oscillation, and affects the feeding of the hollow anchor rod and the flow of the anchoring agent.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0007] In order to facilitate the hollow anchor rod to enter the prestressed anchor rod to extrude the resin, a connecting device is usually arranged for guiding and supporting. In order to utilize the steel pipe to form the pipe, one end of the connecting device is large to facilitate the hollow anchor rod to enter, and the other end is small to facilitate the connecting device to be installed into the prestressed anchor rod. However, when the pipe of the connecting device is shrunk, the inner diameter changes, and the hollow anchor rod is easily impacted.

[0008] In the scheme, the hollow anchor rod can smoothly enter the prestressed anchor rod through the setting of the conical hole expanding section. When collision occurs, the conical hole expanding section directly enters the supporting section. The threaded holes of the supporting section and the connecting section penetrate the supporting section and the connecting section. The guiding and supporting effects of the hollow anchor rod are better than those of the prior art.

[0009] The connecting part between the supporting section and the connecting section is provided with a chamfer or a round corner. The setting of the chamfer and the round corner facilitates positioning and can better weld the connecting device to the prestressed anchor rod.

[0010] The scheme also provides an embedded resin prestressed anchor rod applied to an anchor rod trolley, which comprises a connecting device body and a resin anchor rod and an anchor rod end head. One end of the resin anchor rod is fixedly connected with the connecting section. The other end of the resin anchor rod is fixedly connected with the anchor rod end head. The embedded resin prestressed anchor rod of the scheme is different from the prior art. The embedded resin prestressed anchor rod of the scheme is more convenient for the introduction of the hollow anchor rod, and the support when the hollow anchor rod is fed is better, and the resin piercing effect is better.

[0011] The anchor rod end head comprises a connecting part, a discharging part and a feeding part arranged in sequence. The connecting part is fixedly connected with the end part of the resin anchor rod. An inner hole is formed in the anchor rod end head and extends from the connecting part to the feeding part. A plurality of discharging holes are formed in the circumference of the discharging part. The discharging holes are communicated with the inner hole. One or more of the discharging holes are inclined holes. The anchoring agent does not need to be discharged along the discharging hole and then flow out around the hole wall as in the prior art. The discharging hole of the scheme is inclined. The anchoring agent in the inner hole flows out along the discharging hole and the hole wall, which can guide the flow. Compared with the prior art, the flow of the anchoring agent is smoother.

[0012] The inclined hole of the discharging hole is inclined toward the connecting part. The inner and outer sides of the connecting part are provided with connecting threads. The inclined hole of the discharging hole is inclined toward the connecting part, which can better fill the anchoring agent into the gap between the resin anchor rod and the hole wall. The outer side connecting thread can fasten the anchor rod end head. The inner side connecting thread can guide the flow of the anchoring agent, so that the anchoring agent flows out more smoothly.

[0013] The connecting part is provided with a plurality of first blades and second blades on one side close to the body of the connecting device, the first blades are arranged at the end of the connecting part, the connecting part is provided with a mounting groove on the side wall, the two ends of the second blade mounting part are fixedly arranged in the mounting groove, and the piercing part of the second blade is located at the middle of the connecting part.

[0014] The other end of the feeding part is provided with blade mounting seats on both sides in a diameter direction, the blade mounting seats are twisted and inclined along the rotation direction, the feeding blades are fixedly arranged at the ends of the blade mounting seats, and the blade mounting seats are respectively located on both sides in a diameter direction and twisted and inclined along the rotation direction.

[0015] The rubber plugs are filled in the discharge holes.

[0016] The utility model discloses beneficial effect is:

[0017] The utility model provides a kind of built-in resin prestressed anchor rod and connecting device of anchor carrier, wherein the setting of connecting device body, on the one hand, can ensure that hollow anchor rod more smoothly enters into resin anchor rod, on the other hand, can better play the support and orientation of hollow anchor rod, and the anchor rod end in the built-in resin prestressed anchor is more aspect in feeding and anchoring agent flow. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the axial measurement schematic view of the connecting device of the utility model.

[0019] Figure 2 It is the section view schematic view of the connecting device of the utility model.

[0020] Figure 3 It is the built-in resin prestressed anchor rod assembly schematic view of the utility model.

[0021] Figure 4 It is the anchor rod end of the utility model's axial drawing.

[0022] Figure 5 It is the anchor rod end of the utility model's front view.

[0023] Figure 6 It is the anchor rod end of the utility model's section view schematic view.

[0024] Figure 7 It is the anchor rod end of the utility model's bottom view.

[0025] The connecting device body 1, the support section 101, the connecting section 102, the threaded hole 103, the tapered counterbore section 104, the resin anchor rod 2, the anchor rod end 3, the connecting part 301, the feeding part 302, the discharging part 303, the inner hole 304, the discharging hole 305, the connecting thread 306, the mounting groove 307, the blade mounting seat 308, the feeding blade 309, the first blade 401, and the second blade 402. DETAILED DESCRIPTION

[0026] The utility model is further described below in combination with the drawings and working principles.

[0027] As shown in Figure 1 and 2 : a built-in resin prestressed anchor rod and connecting device, comprising a connecting device body 1, the left and right sides of the connecting device body 1 are a support section 101 and a connecting section 102 respectively, the outer diameter of the connecting section 102 is smaller than that of the support section 101; the connecting device body 1 is axially provided with a threaded hole 103, the threaded hole 103 penetrates the support section 101 and the connecting section 102, and the left end of the support section 101 is provided with a tapered counterbore section 104, wherein the diameter of the tapered counterbore section 104 gradually decreases from the end to the inside, and is connected and matched with the threaded hole 103; when implemented, a chamfer or a round corner is arranged at the connection between the support section 101 and the connecting section 102; through the arrangement of the chamfer and the round corner, positioning is facilitated, and the connecting device is conveniently welded to the prestressed anchor rod.

[0028] Specifically, the above-mentioned connecting device is used in combination with a built-in resin prestressed anchor rod, and specifically, the embodiment also provides a built-in resin prestressed anchor rod applied to an anchor rod trolley, as shown in Figure 3 , from right to left, comprising a connecting device body 1, a resin anchor rod 2, and an anchor rod end 3; as shown in Figure 3 , the right end of the resin anchor rod 2 is fixedly connected with the connecting section 102 in a welding manner, and the left end of the resin anchor rod 2 is also fixedly connected with the anchor rod end 3 in a welding manner.

[0029] When implemented, as shown in Figure 4 , 5 and 6, the anchor rod end 3 of the present scheme is sequentially provided with a connecting part 301, a discharging part 303, and a feeding part 302 from left to right; wherein the connecting part 301 is fixedly connected with the left end of the resin anchor rod 2; the inside of the anchor rod end 3 is axially provided with an inner hole 304, the inner hole extends from the connecting part to the feeding part, the discharging part 303 is circumferentially provided with 3-5 discharging holes 305, the discharging holes 305 are all communicated with the inner hole 304, and the plurality or all of the discharging holes 305 are inclined holes;

[0030] When implemented, as shown in Figure 4 and Figure 6, the inclined hole in the discharge hole 305 is inclined to the side of the connecting part 301, and the anchoring agent does not need to be discharged directly along the discharge hole and then flow out to the surrounding under the restriction of the hole wall as required by the prior art. The discharge hole 305 of the present scheme is inclined, and the anchoring agent will flow out directly along the discharge hole 305 and the hole wall; the connecting part 301 is provided with connecting threads 306 on the inner and outer sides; the threads on the outside of the connecting part 301 facilitate connection with the resin anchor rod 2, and the threads on the inside of the connecting part 301 can play the role of guiding the flow of the anchoring agent, making the flow of the anchoring agent more smooth.

[0031] In implementation, such as Figure 4 In order to more conveniently let the resin in the resin anchor rod 2 flow out, the connecting part 301 is provided with a plurality of first blades 401 and second blades 401 at the right end, wherein the first blades are 2-4 and are integrally formed at the right end of the connecting part 301. Specifically, such as Figure 7 The sidewall of the right end of the connecting part 301 is provided with a mounting groove 307, and the two ends of the second blade 401 are clamped in the mounting groove 307 and then welded and fixed. The end of the second blade 401 is located at the center position of the connecting part 301. The first blade 401 is arranged at the right end of the connecting part, and when the resin is pushed to the connecting part 301 by the hollow anchor rod and the piston, the first blade 401 at the edge will pierce the resin, facilitating the flow of the anchoring agent therein. The piercing part of the second blade 401 is located at the center position of the connecting part 301, which can further pierce the anchoring agent to make it flow out. The mounting groove 307 is provided to facilitate the installation of the second blade 401.

[0032] In implementation, in order to facilitate the installation of the resin anchor rod 2, blade mounting seats 308 are arranged on both sides of a certain diameter direction at the other end of the feeding part 302, wherein the blade mounting seats 308 are twisted and inclined along the rotation direction; feeding blades 309 are fixedly arranged at the end of the blade mounting seat 308; wherein, through the structure of the feeding blade 309 and the blade mounting seat 308, the sediment in the hole for installing the resin anchor rod 2 can be broken and removed when the resin anchor rod 2 is fed. The blade mounting seat 308 is arranged on both sides of a certain diameter direction and twisted and inclined along the rotation direction, which facilitates better breaking of the sediment.

[0033] In implementation, the rubber plug 310 is filled in the discharge hole 305, which has the advantage that the rubber plug 310 can avoid the sediment from entering the discharge hole during cleaning, affecting the flow of the anchoring agent in the subsequent process; in actual application, the flow of the anchoring agent will impact the rubber plug 310, making it be impacted out of the resin anchor rod, ensuring the smooth flow of the anchoring agent;

[0034] Working principle:

[0035] In the existing connecting device, in order to facilitate the hollow anchor rod to enter the prestressed anchor rod to extrude the resin, it is usually necessary to set the connecting device for guiding and supporting, and the current connecting device is formed by using the steel pipe shrinkage, one end of which is larger to facilitate the hollow anchor rod to enter, and the other end is smaller to facilitate the connecting device to be installed into the prestressed anchor rod, but there is an inner diameter change in the connecting device during shrinkage, and the hollow anchor rod is easy to hit; The obvious difference of the present scheme is that, in the present scheme, the hollow anchor rod can smoothly enter the prestressed anchor rod through the setting of the conical hole expanding section 104, and when collision occurs, it will directly enter the supporting section 101 because of the conical hole expanding; The guiding and supporting effect of the hollow anchor rod is better than that of the prior art because the threaded hole 103 penetrates the supporting section 101 and the connecting section 102; The resin anchor rod 2 matched therewith is improved in structure of the anchor rod end 3, so that the outflow of the anchoring agent is more smooth and the piercing effect is better.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is limited by the appended claims.

Claims

1. A resin anchor bolt connection device, comprising a connection device body (1), characterized in that: The two sides of the connecting device body (1) are a support section (101) and a connecting section (102), respectively. The outer diameter of the connecting section (102) is smaller than the outer diameter of the support section (101). The connecting device body (1) has a threaded hole (103) in the axial direction. The threaded hole (103) passes through the support section (101) and the connecting section (102). The end of the support section (101) away from the connecting section (102) is provided with a tapered expansion section (104).

2. The resin anchor bolt connection device according to claim 1, characterized in that: The connection between the support section (101) and the connecting section (102) is provided with a chamfer or rounded corner.

3. A prestressed anchor bolt with built-in resin, characterized in that: The device includes the connecting device as described in claim 1 or 2, and also includes a resin anchor (2) and an anchor end (3), one end of the resin anchor (2) being fixedly connected to the connecting section (102), and the other end of the resin anchor (2) being fixedly connected to the anchor end (3).

4. The embedded resin prestressed anchor bolt according to claim 3, characterized in that: The anchor rod end (3) includes a connecting part (301), a feeding part (302) and a discharging part (303) arranged in sequence; the connecting part (301) is fixedly connected to the end of the resin anchor rod (2); the anchor rod end (3) has an inner hole (304) inside, which extends from the connecting part (301) into the feeding part (302), and the discharging part (303) has a plurality of discharging holes (305) in the circumferential direction, all of which are connected to the inner hole (304).

5. A prestressed resin anchor bolt according to claim 4, characterized in that: One or more of the discharge holes (305) are oblique holes.

6. A prestressed resin anchor bolt according to claim 4, characterized in that: The oblique hole in the discharge hole (305) is inclined toward the connecting part (301); the connecting part (301) is provided with connecting threads (306) on both the inner and outer sides.

7. A prestressed resin anchor bolt according to claim 4, characterized in that: The connecting part (301) is provided with a plurality of first blades (401) and second blades (402) on one side near the connecting device body (1). The first blades (401) are provided at the end of the connecting part (301). The side wall of the connecting part (301) is provided with a mounting groove (307). The two ends of the mounting part of the second blade (402) are fixedly installed in the mounting groove (307). The piercing part of the second blade (402) is located in the middle of the connecting part (301).

8. A prestressed resin anchor bolt according to claim 4, characterized in that: The other end of the feed unit (302) is provided with blade mounting seats (308) on both sides of a certain diameter direction. The blade mounting seats (308) are twisted and rotated in the direction of rotation. A feed blade (309) is fixedly provided at the end of the blade mounting seat (308).

9. A prestressed anchor bolt with built-in resin according to claim 4, characterized in that: Several of the discharge holes (305) are also filled with rubber plugs (310).

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