Grouting anchor rod for coal mine tunnel

Abstract

The utility model discloses a grouting anchor rod for a coal mine tunnel, which relates to the field of grouting anchor rods, and comprises a first anchor rod body, a connecting component, a second anchor rod body and inserting pipes, the inner walls of the two inserting pipes are respectively and detachably connected with one end of the first anchor rod body and one end of the second anchor rod body in a sliding manner, and the opposite surfaces of the two inserting pipes are respectively provided with a same connecting pipe. By means of the T-shaped sliding sleeve, when the first anchor rod body and the second anchor rod body are connected, the T-shaped sliding sleeve slides to drive the spring to contract, then the T-shaped sliding sleeve is separated from the second sliding hole, and at the moment, the T-shaped sliding sleeve can be detached from the second sliding hole, so that the first anchor rod body and the second anchor rod body are connected. And the second anchor rod body provided with the first sliding hole is inserted into the inserting pipe, when the first sliding hole is matched with the second sliding hole, the T-shaped sliding sleeve is loosened, the T-shaped sliding sleeve is reset under the action of the spring, then the ball is squeezed, the ball is clamped into the first sliding hole and the second sliding hole, and therefore connection is achieved, and operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grouting anchor rod, especially to a coal mine roadway grouting anchor rod. BACKGROUND

[0002] The anchor rod is the most basic component of the roadway support in the coal mine, which reinforces the surrounding rock of the roadway together, so that the surrounding rock supports itself. The support system and the construction process continuously adapt to the activity state of the surrounding rock deformation, so as to control the deformation of the surrounding rock and maintain the stability of the roadway. The hollow grouting anchor rod reinforcement support method fills the cracks of the surrounding rock by grouting, forms the overall surrounding rock, and can control the deformation of the roadway.

[0003] In the prior art, when the hollow grouting anchor rod is used, a hole is drilled in the soil first, and then the hollow grouting anchor rod is driven into the hole, and then the soil is grouted through the hollow grouting anchor rod. However, the length of the existing hollow grouting anchor rod is fixed and cannot be adjusted, and different lengths of hollow grouting anchor rods need to be customized according to the actual situation, which has poor flexibility. Therefore, we disclose a coal mine roadway grouting anchor rod to meet people's needs. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a coal mine roadway grouting anchor rod to solve the problem of the fixed length of the existing hollow grouting anchor rod, which cannot be adjusted in length and needs to be customized in different lengths according to the actual situation, and has poor flexibility.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a coal mine roadway grouting anchor rod, comprising a first anchor rod body, one end of the first anchor rod body is detachably connected with a connecting assembly, one end of the first anchor rod body is detachably connected with a second anchor rod body through the connecting assembly, the connecting assembly comprises two plug-in pipes, the inner walls of the two plug-in pipes are respectively and slidably detachably connected with one end of the first anchor rod body and the second anchor rod body, the opposite surfaces of the two plug-in pipes are respectively provided with the same connecting pipe, the surface of the plug-in pipe is provided with a dismounting unit, and the inner wall of the connecting pipe is provided with a connecting sealing unit.

[0006] Preferably, the dismounting unit comprises a T-shaped sliding sleeve slidably connected with the surface of the plug-in pipe, the surface of the plug-in pipe is sleeved with a spring, the inner wall of the T-shaped sliding sleeve is connected with one end of the spring, and the end of the spring away from the T-shaped sliding sleeve is connected with the surface of the plug-in pipe.

[0007] Preferably, a plurality of second sliding holes are formed in the surface of the plug-in pipe, and a anti-dropping ring is mounted at one end of the plug-in pipe.

[0008] Preferably, the first anchor body and the second anchor body are provided with a plurality of first sliding holes on the surface of the end near the insertion pipe, the plurality of first sliding holes and the second sliding holes are matched, and the inner walls of the plurality of first sliding holes and the second sliding holes are adapted to be ball bearings.

[0009] Preferably, the connecting sealing unit includes multiple connecting rods installed on the inner wall of the connecting pipe, the same sealing ring is installed on the opposite surfaces of the multiple connecting rods, two stop rings are installed on the inner wall of the connecting pipe, and limit rings are respectively installed on the ends of the first anchor rod body and the second anchor rod body near the connecting pipe, and the ends of the first anchor rod body and the second anchor rod body near the connecting pipe both extend into the interior of the sealing ring.

[0010] Preferably, a drill bit is installed at the end of the first anchor body away from the insertion pipe, and the surface of the drill bit has multiple grout outlet holes.

[0011] Preferably, a grout stop plug is installed at the end of the second anchor body away from the insertion pipe, the grout stop plug is fitted with a pad, and a nut is provided at one end of the pad, the pad being connected to the grout stop plug via the nut.

[0012] In summary, the technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model is equipped with a connecting component. The T-shaped sliding sleeve allows the first anchor rod body and the second anchor rod body to be connected. By sliding the T-shaped sliding sleeve, the spring is compressed, thereby separating the T-shaped sliding sleeve from the second sliding hole. At this time, the second anchor rod body with the first sliding hole is inserted into the insertion pipe. When the first and second sliding holes match, the T-shaped sliding sleeve is released, and under the action of the spring, it is reset, thereby squeezing the ball and making the ball lock into the first and second sliding holes, thus realizing the connection. The operation is convenient.

[0014] 2. The sealing ring in this utility model can seal the joint between the first anchor rod and the second anchor rod to prevent grout from overflowing. The stop ring and limit ring can prevent the first anchor rod or the second anchor rod from being fed too much during feeding, which would result in an unsatisfactory sealing effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 is a sectional view of the utility model;

[0018] Figure 3 is Figure 2 is a local amplification structure diagram of A area in the middle;

[0019] Figure 4 is a sectional structure diagram of the connecting assembly in the utility model.

[0020] In the figure: 1, first anchor rod body;2, second anchor rod body;3, stop plug;4, backing plate;5, nut;6, drill bit;7, grout outlet hole;8, connecting pipe;9, sliding sleeve;10, plug-in pipe;11, stop ring;12, first sliding hole;13, spring;14, anti-dropping ring;15, second sliding hole;16, sealing ring;17, limiting ring;18, ball;19, connecting rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] Reference Figures 1-4 As shown in the figure, a coal mine roadway grouting anchor rod, including first anchor rod body 1, one end of first anchor rod body 1 is detachably connected with connecting assembly, one end of first anchor rod body 1 is detachably connected with second anchor rod body 2 through connecting assembly, connecting assembly includes two plug-in pipes 10, the inner wall of two plug-in pipes 10 is slidably detachably connected with one end of first anchor rod body 1 and second anchor rod body 2 respectively, the opposite surface of two plug-in pipes 10 is respectively provided with the same connecting pipe 8, the surface of plug-in pipe 10 is provided with dismounting unit, the inner wall of connecting pipe 8 is provided with connecting sealing unit.

[0024] Based on the above structure, two plug-in pipes 10 can be connected through connecting pipe 8, so that it presents integrated design, operation is more convenient, the size of the whole connecting assembly is same with the size of first anchor rod body 1 and second anchor rod body 2, can avoid the hindrance when feeding, the dismounting unit can make it change length freely, use is more flexible.

[0025] As Figure 2 And 4As shown, the dismounting unit comprises a T-shaped sliding sleeve 9 in sliding connection with the surface of the splicing pipe 10, the surface of the splicing pipe 10 is sleeved with a spring 13, the inner wall of the T-shaped sliding sleeve 9 is connected with one end of the spring 13, the end of the spring 13 away from the T-shaped sliding sleeve 9 is connected with the surface of the splicing pipe 10, the surface of the splicing pipe 10 is provided with a plurality of second sliding holes 15, one end of the splicing pipe 10 is provided with an anti-drop ring 14, the surface of one end of the first anchor rod body 1 and the second anchor rod body 2 is provided with a plurality of first sliding holes 12, the plurality of first sliding holes 12 and the second sliding holes 15 are matched, the inner walls of the plurality of first sliding holes 12 and the second sliding holes 15 are matched with a plurality of balls 18, the T-shaped sliding sleeve 9 can be used to connect the first anchor rod body 1 and the second anchor rod body 2, the T-shaped sliding sleeve 9 is slid to drive the spring 13 to contract, and then the T-shaped sliding sleeve 9 is separated from the second sliding hole 15, at this time, the second anchor rod body 2 provided with the first sliding hole 12 is inserted into the splicing pipe 10, when the first sliding hole 12 and the second sliding hole 15 are matched, the T-shaped sliding sleeve 9 is loosened, and the spring 13 is reset to press the ball 18 to make the ball 18 clamped in the first sliding hole 12 and the second sliding hole 15, so as to realize the connection, which is convenient to operate.

[0026] Embodiment 2

[0027] As shown in Figure 2 and 3 , the connecting and sealing unit comprises a plurality of connecting rods 19 installed on the inner wall of the connecting pipe 8, the opposite surfaces of the plurality of connecting rods 19 are provided with the same sealing ring 16, the inner wall of the connecting pipe 8 is provided with two stop rings 11, the first anchor rod body 1 and the second anchor rod body 2 are provided with a limiting ring 17 at one end close to the connecting pipe 8, and the one end of the first anchor rod body 1 and the second anchor rod body 2 close to the connecting pipe 8 extends into the sealing ring 16, the sealing ring 16 can be provided to seal the first anchor rod body 1 and the second anchor rod body 2 at the connecting joint to avoid overflow of the slurry, and the stop ring 11 and the limiting ring 17 can be provided to make the first anchor rod body 1 or the second anchor rod body 2 feed more to cause an unsatisfactory sealing effect.

[0028] As shown in Figure 1 , the end of the first anchor rod body 1 away from the splicing pipe 10 is provided with a drill bit 6, the surface of the drill bit 6 is provided with a plurality of slurry outlets 7, the end of the second anchor rod body 2 away from the splicing pipe 10 is provided with a slurry stop plug 3, the slurry stop plug 3 is provided with a backing plate 4, one end of the backing plate 4 is provided with a nut 5, the backing plate 4 is connected with the slurry stop plug 3 through the nut 5, the first anchor rod body 1 and the second anchor rod body 2 are provided with a grouting channel, the first anchor rod body 1 is provided with external threads, which is convenient for cutting and lengthening the anchor rod body, and compared with the smooth rod body, the anchor rod body and the grouting material are increased in bonding area to improve the anchoring force, the uniform slices provided on the drill bit 6 can separate the slurry outlet from the rock stratum to avoid direct contact and slurry blockage.

[0029] The utility model discloses working principle:

[0030] In use, be provided with the connecting assembly, through the T-shaped sliding sleeve 9 that sets up, can when connecting first anchor rod body 1 and second anchor rod body 2, through the sliding T-shaped sliding sleeve 9, drive the contraction of spring 13, and then make its T-shaped sliding sleeve 9 and second sliding hole 15 separate, at this moment, the second anchor rod body 2 that sets up first sliding hole 12 is inserted into the inside of the plug-in pipe 10, until first sliding hole 12 and second sliding hole 15 coincide, loosen T-shaped sliding sleeve 9, under the action of spring 13, make it reset, and then extrude ball 18, make its ball 18 card into the inside of first sliding hole 12 and second sliding hole 15, to realize the connection, convenient operation, when needing different length, just need to connect multiple anchor rods, through the sealing ring 16 that sets up, can seal first anchor rod body 1 and second anchor rod body 2 at the connecting seam, avoid overflow slurry, through the setting stop ring 11 and then limit ring 17, can make first anchor rod body 1 or second anchor rod body 2 when feeding, appear feed more, lead to the sealing effect is not ideal.

[0031] Finally, it should be noted that: the above is only the preferred embodiment of the utility model and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A grouting bolt for coal mine roadway, comprising a first bolt body (1), characterized in that: One end of the first anchor rod body (1) is detachably connected with a connecting assembly, one end of the first anchor rod body (1) is detachably connected with a second anchor rod body (2) through the connecting assembly, the connecting assembly comprises two plug-in pipes (10), the inner walls of the two plug-in pipes (10) are respectively slidably detachably connected with one end of the first anchor rod body (1) and the second anchor rod body (2), the opposite faces of the two plug-in pipes (10) are respectively provided with the same connecting pipe (8), the surface of the plug-in pipe (10) is provided with a dismounting unit, and the inner wall of the connecting pipe (8) is provided with a connecting sealing unit. The dismounting unit comprises a T-shaped sliding sleeve (9) slidably connected with the surface of the plug-in pipe (10), the surface of the plug-in pipe (10) is sleeved with a spring (13), one end of the spring (13) is connected with the inner wall of the T-shaped sliding sleeve (9), and the other end of the spring (13) away from the T-shaped sliding sleeve (9) is connected with the surface of the plug-in pipe (10).

2. The coal mine roadway grouting anchor rod according to claim 1, characterized in that: The surface of the plug-in pipe (10) is provided with a plurality of second sliding holes (15), and one end of the plug-in pipe (10) is provided with an anti-disengagement ring (14).

3. The coal mine roadway grouting anchor rod according to claim 2, characterized in that: The surface of one end of the first anchor rod body (1) and the second anchor rod body (2) close to the plug-in pipe (10) is provided with a plurality of first sliding holes (12), the plurality of first sliding holes (12) and the second sliding holes (15) are matched, and the inner walls of the plurality of first sliding holes (12) and the second sliding holes (15) are respectively matched with a plurality of ball bearings (18).

4. The coal mine roadway grouting anchor rod according to claim 1, characterized in that: The connecting sealing unit comprises a plurality of connecting rods (19) mounted on the inner wall of the connecting pipe (8), the opposite faces of the plurality of connecting rods (19) are provided with the same sealing ring (16), the inner wall of the connecting pipe (8) is provided with two stop rings (11), one end of the first anchor rod body (1) and the second anchor rod body (2) close to the connecting pipe (8) is respectively provided with a limiting ring (17), and one end of the first anchor rod body (1) and the second anchor rod body (2) close to the connecting pipe (8) extends into the sealing ring (16).

5. A coal mine roadway grouting anchor rod according to claim 4, characterized in that: One end of the first anchor rod body (1) away from the plug-in pipe (10) is provided with a drill bit (6), and the surface of the drill bit (6) is provided with a plurality of slurry outlets (7).

6. A coal mine roadway grouting anchor rod according to claim 5, characterized in that: One end of the second anchor rod body (2) away from the plug-in pipe (10) is provided with a slurry stopping plug (3), the slurry stopping plug (3) is provided with a backing plate (4), one end of the backing plate (4) is provided with a nut (5), and the backing plate (4) is connected with the slurry stopping plug (3) through the nut (5). One end of the first anchor rod body (1) away from the plug-in pipe (10) is provided with a drill bit (6), and the surface of the drill bit (6) is provided with a plurality of slurry outlets (7).

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