A new type of conical bolt anchor rod for coal mine

Abstract

The utility model relates to the technical field of coal mine construction tools, and concretely provides a novel conical bolt anchor rod for coal mine, which comprises: a rod body having an anchoring section and a mounting section, the anchoring section being provided with continuous threads in the circumferential direction; a first glue bin being sleeved on the circumferential outer wall of the mounting section and being axially slidable along the mounting section; a second glue bin being rotationally arranged on the circumferential wall of the mounting section; wherein the first glue bin is arranged close to the anchoring section, and the second glue bin is arranged in a spaced manner from the first glue bin; a through hole penetrating through the first glue bin and having a first end and a second end, the first end being used to communicate with the inner wall of the second glue bin when the first glue bin is close to the second glue bin; A glue and B glue are respectively stored in the first glue bin and the second glue bin, and the second end of the through hole is used to output the mixed glue of A glue and B glue to the side of the first glue bin close to the anchoring section, and the utility model has the effect of simultaneously installing the anchor rod and sealing the water seepage path through the above structural design.

Description

Technical Field

[0001] This utility model relates to the field of coal mine construction tools, specifically providing a new type of tapered bolt anchor rod for coal mines. Background Technology

[0002] Currently, in the coal mining industry, rock bolt support is an important means of ensuring roadway stability. Existing coal mine rock bolts require drilling into the rock strata during construction. However, due to the typically considerable depth of coal mines, this construction operation can lead to a series of problems.

[0003] Once the anchor bolts are drilled into the rock strata, water from the rock will continuously gush out through the borehole. The underground space of a mine is relatively enclosed, and this continuously flowing water will gradually accumulate at the bottom of the mine. The accumulation of water in the mine brings many adverse effects. First, it severely impacts the construction progress. The accumulated water makes the construction site muddy and slippery, increasing the difficulty of work for construction workers. Large machinery also struggles to operate normally in such an environment, leading to a significant reduction in construction efficiency.

[0004] To address the water accumulation problem, the current common practice is to manually fill the boreholes. Construction workers need to spend a significant amount of time and effort carrying the filling materials to the borehole location. This not only incurs substantial labor costs, but improper operation during the filling process can also prevent the desired water-stopping effect from being achieved, allowing water to continue to seep out from the rock strata, thus failing to fundamentally solve the water accumulation problem.

[0005] Therefore, there is an urgent need for a new technology or device that can effectively prevent water from gushing out of the rock strata at the anchor bolt borehole, in order to improve the construction efficiency and safety of coal mining. Utility Model Content

[0006] To address the problem of existing coal mine anchor bolts causing water to continuously leak from the borehole and accumulate in the mine, this invention provides a novel tapered bolt anchor bolt for coal mines, which achieves the effect of sealing off seepage paths while installing the anchor bolt.

[0007] According to one aspect of this utility model, a novel tapered bolt anchor rod for coal mines is provided. The anchor rod includes: a rod body having an anchoring section and an installation section, the anchoring section having a continuous thread in the circumferential direction; a first glue chamber sleeved on the circumferential outer wall of the installation section, and the first glue chamber being slidable along the axial direction of the installation section; a second glue chamber rotatably disposed in the circumferential direction of the installation section; wherein the first glue chamber is disposed close to the anchoring section, and the second glue chamber is disposed at a distance from the first glue chamber; a through hole penetrating the first glue chamber and having a first end and a second end, the first end being used to connect to the inner wall of the second glue chamber when the first glue chamber is close to the second glue chamber; the first glue chamber and the second glue chamber respectively store A glue and B glue, and the second end of the through hole is used to output a mixture of A glue and B glue to the side of the first glue chamber close to the anchoring section.

[0008] In some embodiments, the first glue tank includes: a first annular body, sleeved on the circumferential outer wall of the rod mounting section; an annular plate, installed on the side of the first annular body near the anchoring section, the annular plate being sleeved on the mounting section; a first annular chamber, disposed within the first annular body, and concentrically arranged with the first annular body; wherein the two ends of the through hole respectively pass through the end of the first annular chamber near the second glue tank and the end wall of the annular plate; and glue A is filled in the first annular chamber.

[0009] In some embodiments, the second glue tank includes: a second annular body, the inner wall of which is rotatably connected to the outer wall of the rod; a second annular chamber, disposed within the second annular body and concentrically arranged with the second annular body; an annular glue discharge groove, disposed within the inner wall of the second annular chamber; wherein the annular glue discharge groove is disposed on the side of the second annular chamber near the first glue tank; and an annular sealing plate, disposed within the annular glue discharge groove, the annular sealing plate sliding along the axial direction of the rod.

[0010] In some embodiments, the second glue tank further includes a spring sleeved on the outer circumferential wall of the rod, the spring being disposed between the inner wall of the second annular compartment and the annular sealing plate; the first glue tank further includes a plurality of elevating columns, the plurality of elevating columns being annularly distributed on the side of the first glue tank near the second glue tank.

[0011] In some embodiments, the first adhesive compartment further includes: a first self-adhesive strip disposed at the first end of the through hole, the first self-adhesive strip being used to seal the first end of the through hole; and a second self-adhesive strip disposed at the second end of the through hole, the second self-adhesive strip being used to seal the second end of the through hole; wherein both the first self-adhesive strip and the second self-adhesive strip have a cut in the middle section.

[0012] In some embodiments, a pad assembly is further provided between the first glue tank and the second glue tank. The pad assembly includes: a pad unit, wherein multiple sets of pad units are provided, and the multiple sets of pad units are distributed in a ring around the outer periphery of the first glue tank and the second glue tank; a mounting ring, which is mounted on the outer wall of the second glue tank and covers the outer periphery of the second glue tank. The actuating end of the pad unit rotates around the mounting ring, and one end of the driving end of the pad unit is connected to the first glue tank, and the other end is hinged to the actuating end of the pad unit.

[0013] In some embodiments, the driving end of the pad unit includes: a driving rod, one end of which is connected to the side of the annular plate near the second glue tank, and the driving rods of each pad unit are arranged in a ring array on the surface of the annular plate; two sets of first hinge rods, the two sets of first hinge rods being respectively provided on both sides of the driving rod; and two sets of curved rods, one end of the two sets of curved rods being respectively hinged to the first hinge rod, and the other end being hinged to both sides of the actuating end.

[0014] In some embodiments, the actuating end of the pad unit includes: an L-block, wherein the L-blocks of each group of pad units are arranged in a ring array on the outer wall of the mounting ring; wherein the opening of each L-block faces the side away from the rod; a hinge hole is provided at one end of the L-block near the rod; and a second hinge rod is rotatably disposed in the hinge hole, wherein both ends of the second hinge rod extend out of the hinge hole and are hinged to the curved rod.

[0015] In some embodiments, a limiting strip is provided at one end of the rod near the installation section, and at least one limiting strip is provided. The limiting strip is arranged on the outer circumferential wall of the rod along the axial direction of the rod; wherein the limiting strip is engaged with the output end of the anchor drilling rig.

[0016] The embodiments of this utility model have the following advantages.

[0017] To apply preload and generate radial compressive stress on the surrounding rock, thus inhibiting rock strata separation and fracture propagation, an anchor drilling rig can be used to rotate the rod, causing the anchoring section of the rod to penetrate the surrounding rock. During installation, the rod's installation section is connected to the anchor drilling rig. Starting the rig causes the rod to rotate, and the continuous thread of the anchoring section continuously penetrates the rock, forming a threaded hole. This threaded hole is then connected to the continuous thread, fixing the rod within the rock. As the anchoring section gradually penetrates the rock, the first rubber chamber approaches the rock wall. The continued rotation of the rod pushes the first rubber chamber towards the second rubber chamber through the pressure of the rock wall. Simultaneously, the second rubber chamber, accompanying the rod, enters the rock, moving closer to the first. When the first rubber chamber approaches the second, a portion of it embeds itself within the second chamber, compressing the B-type rubber inside. This compressed B-type rubber then enters the first chamber through the first end of the through hole. The B-type rubber then mixes with the A-type rubber. The mixture is mixed in the first colloid chamber to form a viscous colloid. This colloid is then discharged through the second end of the through-hole to the side of the first colloid chamber closest to the rock mass. This colloid blocks the opening of the threaded hole formed in the rock mass by the anchored section, mitigating the problem caused by the continuous drainage of water from the rock mass after the anchor rod is drilled into the rock mass due to the large depth of the mine pit. The rotating rod compresses the two colloid chambers, mixing the colloid in real time and actively sealing the orifice. A sealing layer is formed simultaneously during the anchor rod installation process, eliminating the seepage window. The colloid mixing and discharge are completed simultaneously with the anchor rod insertion. The colloid forms an instant filling opening along with the threaded hole, allowing natural drainage during the initial installation phase while dynamically sealing the seepage path. The colloid is squeezed and discharged from the orifice inwards, forming a colloid accumulation gradient from the outside in. The lateral constraint force of the rock wall on the colloid resists the reverse impact of water pressure. The mixed colloid enhances the frictional resistance between the rod and the borehole, reducing the cumulative effect of micro-displacement caused by vibration. By filling the pores, it improves stress distribution and prevents anchoring failure caused by localized stress concentration.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0019] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the rod structure according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the installation of the limiting strip according to one embodiment of the present utility model.

[0023] Figure 3 This is a schematic diagram of the installation of the first glue tank according to an embodiment of the present invention.

[0024] Figure 4 for Figure 3 A cross-sectional view along the AA direction.

[0025] Figure 5 for Figure 4 A magnified view of region B in the middle.

[0026] Figure 6 This is a schematic diagram of the installation of the first self-adhesive strip according to an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the installation of the second self-adhesive strip according to an embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the second glue tank structure according to one embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the installation of the pad assembly according to one embodiment of the present invention.

[0030] Figure 10 This is a schematic diagram of the pad assembly structure according to an embodiment of the present invention.

[0031] Figure Labels

[0032] 1- Rod;

[0033] 11-Anchoring section; 12-Installation section; 13-Continuous thread; 14-Limiting strip; 15-Sleeve;

[0034] 2-First glue tank;

[0035] 21-Through hole; 22-First annular body; 23-Annular plate; 24-First annular compartment; 25-Elevating column; 26-First self-adhesive strip; 27-Second self-adhesive strip; 28-Slit;

[0036] 3-Second glue tank;

[0037] 31-Second annular body; 32-Second annular compartment; 33-Annular glue discharge groove; 34-Annular sealing plate; 35-Spring;

[0038] 4-Pushplate assembly;

[0039] 41-Plate unit;

[0040] 411-Drive rod; 412-First hinge rod; 413-Crank rod;

[0041] 411a-L block; 412a-hinge hole; 413a-second hinge rod;

[0042] 42 - Mounting ring. Detailed Implementation

[0043] To make the objectives, solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] As described above, in the traditional use of coal mine anchor bolts, due to the great depth of the mine, a large amount of water is discharged when the anchor bolts are drilled into the rock strata, resulting in the accumulation of water in the mine and affecting the construction progress.

[0046] To at least partially solve one or more of the above-mentioned problems and other potential problems, an exemplary embodiment of this utility model provides a novel tapered bolt anchor for coal mines. The anchor includes: a rod body 1 having an anchoring section 11 and an installation section 12, the anchoring section 11 having a continuous thread 13 circumferentially; a first glue chamber 2, sleeved on the outer circumferential wall of the installation section 12, and the first glue chamber 2 being slidable along the axial direction of the installation section 12; a second glue chamber 3, rotatably disposed on the circumferential direction of the installation section 12; wherein the first glue chamber 2 is disposed close to the anchoring section 11, and the second glue chamber 3 is disposed at a distance from the first glue chamber 2; a through hole 21 penetrating the first glue chamber 2, and having a first end and a second end, the first end being used to connect the inner wall of the second glue chamber 3 when the first glue chamber 2 is close to the second glue chamber 3; the first glue chamber 2 and the second glue chamber 3 respectively store A glue and B glue, and the second end of the through hole 21 is used to output a mixture of A glue and B glue to the side of the first glue chamber 2 close to the anchoring section 11.

[0047] In the above embodiments, to generate radial compressive stress on the surrounding rock by applying preload, thereby inhibiting rock strata separation and fracture propagation, a rock bolt drilling rig can be used to rotate the rod body 1, causing the anchoring section 11 of the rod body 1 to enter the surrounding rock mass. During installation, the installation section 12 of the rod body 1 is connected to the rock bolt drilling rig. Starting the rock bolt drilling rig causes the rod body 1 to rotate, and the continuous thread 13 of the anchoring section 11 continuously enters the rock mass, forming a threaded hole. The threaded hole is then used to connect with the continuous thread 13, thus... The rod 1 is fixed in the rock mass. As the anchoring section 11 of the rod 1 gradually enters the rock mass, the first rubber chamber 2 approaches the rock wall. The rod 1 continues to rotate, causing the first rubber chamber 2 to be pushed closer to the second rubber chamber 3 by the pressure from the rock wall. At the same time, the second rubber chamber 3 enters the rock mass along with the rod 1, causing the second rubber chamber 3 to continuously move closer to the first rubber chamber 2. When the first rubber chamber 2 approaches the second rubber chamber 3, a portion of the first rubber chamber 2 that is close to the second rubber chamber 3 is embedded in the second rubber chamber 3, compressing the B rubber inside the second rubber chamber 3. After being compressed, the B rubber passes through the through hole 21. The first end of the rod enters the first glue chamber 2, where glue B and glue A are mixed to form a viscous mixture. This mixture is then discharged through the second end of the through hole 21 to the side of the first glue chamber 2 closest to the rock mass. This causes the mixture to block the opening of the threaded hole formed by the anchored section 11 in the rock mass, mitigating the problem caused by the large depth of the mine pit and the continuous drainage of water from the rock mass after the anchor rod is drilled into the rock. The rotation of the rod body 1 squeezes the two glue chambers, mixing the glue in real time and actively sealing the opening. This process simultaneously forms a viscous mixture during the anchor rod installation. The sealing layer eliminates the seepage time window. The colloid mixing and discharge are completed simultaneously with the anchor bolt insertion. The colloid forms an instant filling opening with the threaded hole, which allows natural drainage in the early stage of installation and dynamically seals the seepage path. The colloid is squeezed out from the hole and discharged inward, forming a colloid accumulation gradient from the outside to the inside. The lateral constraint force of the rock wall on the colloid resists the reverse impact of water pressure. The mixed colloid can enhance the frictional resistance between the rod body 1 and the borehole, reduce the cumulative effect of micro-displacement caused by vibration, and improve stress distribution by filling the pores, preventing anchor failure caused by local stress concentration.

[0048] Please see Figures 1-10 In some embodiments, adhesive A and adhesive B include, but are not limited to, epoxy resin AB adhesive, polyurethane AB adhesive, acrylate AB adhesive, and other types of AB adhesive capable of sealing borehole pores.

[0049] In the above embodiments, polyurethane AB adhesive is preferred. The molded mixed adhesive has good elasticity, vibration resistance, and water expansion, and can adapt to micro-cracks to achieve flexible sealing under the condition of micro-deformation of rock mass. At the same time, when epoxy resin AB adhesive is selected, it can achieve high strength, chemical corrosion resistance, and low shrinkage after curing, and can form a rigid sealing layer. When acrylic AB adhesive is selected, it can cure quickly, is moisture resistant, and is suitable for emergency leak sealing. Acrylic AB adhesive can be selected when anchor bolt installation needs to be completed quickly.

[0050] Please see Figures 1-10 In some embodiments, the first glue tank 2 includes: a first annular body 22, sleeved on the circumferential outer wall of the mounting section 12 of the rod body 1; an annular plate 23, installed on the side of the first annular body 22 near the anchoring section 11, and sleeved on the mounting section 12; a first annular chamber 24, disposed inside the first annular body 22 and concentrically arranged with the first annular body 22; wherein the two ends of the through hole 21 pass through the end of the first annular chamber 24 near the second glue tank 3 and the end wall of the annular plate 23 respectively; and glue A is filled in the first annular chamber 24.

[0051] In the above embodiment, the first glue tank 2 is composed of a first annular body 22 and an annular plate 23. The surface of the annular plate 23 can increase the contact area between the first annular body 22 and the rock wall, thereby improving the local detachment at the drill hole, causing the first glue tank 2 to be embedded in the drill hole, making it impossible for the first glue tank 2 to push the second glue tank 3 to discharge glue. When the annular plate 23 reaches the vicinity of the rock wall, the rod 1 continues to rotate, causing a part of the first annular body 22 near the second glue tank 3 to be embedded in the second glue tank 3, squeezing the B glue in the second glue tank 3 into the first annular chamber 24, so that the B glue and A glue mix during the continuous squeezing process. The viscous mixed glue is continuously discharged into the drill hole near the annular plate 23 through the through hole 21. When AB glue with expansion properties is used, the annular plate 23 blocks the opening of the drill hole, and the mixed glue enters between the rod 1 and the threaded hole, so that the mixed glue fills the gap between the threaded hole and the rod 1.

[0052] Please see Figures 1-10 In some embodiments, the second glue tank 3 includes: a second annular body 31, the inner wall of which is rotatably connected to the outer wall of the rod 1; a second annular chamber 32, disposed within the second annular body 31 and concentrically arranged with the second annular body 31; an annular glue discharge groove 33, disposed on the inner wall of the second annular chamber 32; wherein the annular glue discharge groove 33 is disposed on the side of the second annular chamber 32 near the first glue tank 2; and an annular sealing plate 34, disposed within the annular glue discharge groove 33, the annular sealing plate 34 sliding along the axial direction of the rod 1.

[0053] In the above embodiment, when the first annular body 22 of the first glue tank 2 approaches the second annular body 31, and at the same time the first annular body 22 gradually embeds into the second annular chamber 32 of the second annular body 31, the first annular body 22 continuously pushes the annular sealing plate 34 to squeeze the B glue in the second annular chamber 32. The diameter of the annular glue discharge groove 33 is larger than the diameter of the second annular chamber 32, so that when the annular sealing plate 34 is pushed into the annular glue discharge groove 33, the B glue can be discharged along the gap between the annular sealing plate 34 and the annular glue discharge groove 33. At the same time, the stored B glue can be squeezed through the gap, so that the slightly dehydrated B glue can mix itself.

[0054] Please see Figures 1-10 In some embodiments, the second glue tank 3 further includes: a spring 35, sleeved on the outer wall of the rod 1, the spring 35 being disposed between the inner wall of the second annular chamber 32 and the annular sealing plate 34; the first glue tank 2 further includes: a plurality of raising columns 25, the plurality of raising columns 25 being distributed in a ring on the side of the first glue tank 2 near the second glue tank 3.

[0055] In the above embodiments, to prevent the annular sealing plate 34 from falling out of the annular glue discharge groove 33 during transportation, a spring 35 is installed in the second annular chamber 32 to install the annular sealing plate 34. The two ends of the spring 35 are respectively connected to the inner wall of the second annular chamber 32 and the side of the annular sealing plate 34 near the second annular chamber 32. When the annular sealing plate 34 is squeezed by the first annular body 22, the annular sealing plate 34 continuously squeezes the spring 35, so that the B glue in the second annular chamber 32 is slowly discharged into the first annular chamber 24 through the through hole 21. At the same time, it improves the problem of the B glue overflowing from the second annular chamber 32 due to the annular sealing plate 34 being accidentally squeezed during transportation. The shim columns 25 are arranged in a ring at one end of the first annular body 22 near the second annular body 31. The shim columns 25 are used to elevate the annular sealing plate 34 and the through hole 21 when the first annular body 22 squeezes the annular sealing plate 34, so as to prevent the annular sealing plate 34 from blocking the through hole 21 and causing the B glue to be unable to enter the first annular chamber 24 through the through hole 21.

[0056] Please see Figures 1-10 In some embodiments, the first adhesive container 2 further includes: a first self-adhesive strip 26 disposed at the first end of the through hole 21, the first self-adhesive strip 26 being used to seal the first end of the through hole 21; a second self-adhesive strip 27 disposed at the second end of the through hole 21, the second self-adhesive strip 27 being used to seal the second end of the through hole 21; wherein the middle sections of the first self-adhesive strip 26 and the second self-adhesive strip 27 are provided with a cut 28.

[0057] In the above embodiment, the first self-adhesive strip 26 and the second self-adhesive strip 27 are attached to both ends of the through hole 21 in a ring shape. The two ends of the through hole 21 are sealed by the first self-adhesive strip 26 and the second self-adhesive strip 27 to prevent the A glue from leaking or losing moisture and thus failing. When in use, the first self-adhesive strip 26 and the second self-adhesive strip 27 can be peeled off along the cut 28.

[0058] Please see Figures 1-10 In some embodiments, a pad assembly 4 is further provided between the first glue tank 2 and the second glue tank 3. The pad assembly 4 includes:

[0059] The pad unit 41 is provided in multiple sets, and the multiple sets of pad units 41 are distributed in a ring around the outer periphery of the first glue tank 2 and the second glue tank 3.

[0060] The mounting ring 42 is installed on the outer wall of the second glue tank 3 and covers the outer periphery of the second glue tank 3. The actuating end of the pad unit 41 rotates around the mounting ring 42. One end of the driving end of the pad unit 41 is connected to the first glue tank 2, and the other end is hinged to the actuating end of the pad unit 41.

[0061] In the above embodiment, when the first glue tank 2 approaches the second glue tank 3, the first glue tank 2 drives the driving end of the pad unit 41 to gradually approach the second glue tank 3, so that the driving end of the pad unit 41 pushes the actuating end to rotate around the mounting ring 42, and finally makes the end of the actuating end away from the mounting ring 42 gradually approach the rock wall and abut against the outside of the rock wall, thereby fixing the hanging net on the surface of the rock wall through the actuating end.

[0062] Please see Figures 1-10 In some embodiments, the driving end of the pad unit 41 includes: a driving rod 411, one end of which is connected to the side of the annular plate 23 near the second glue tank 3, and the driving rods 411 of each pad unit 41 are arranged in a ring array on the surface of the annular plate 23; two sets of first hinge rods 412, which are respectively provided on both sides of the driving rod 411; and two sets of curved rods 413, one end of which is respectively hinged to the first hinge rod 412, and the other end is hinged to both sides of the actuating end.

[0063] In the above embodiment, when the drive end is working, the drive rod 411 is driven by the annular plate 23 to move closer to the actuating end, so that one end of the drive rod 411 pushes the crank rod 413 to rotate around the first hinge rod 412, thereby achieving the purpose of the crank rod 413 pushing the actuating end to rotate around the mounting ring 42.

[0064] Please see Figures 1-10In some embodiments, the actuating end of the pad unit 41 includes: an L-block 411a, wherein the L-blocks 411a of each group of pad units 41 are arranged in a ring array around the outer wall of the mounting ring 42; wherein the opening of each L-block 411a faces the side away from the rod body 1; a hinge hole 412a is provided at one end of the L-block 411a near the rod body 1; and a second hinge rod 413a is rotatably provided in the hinge hole 412a, wherein both ends of the second hinge rod 413a extend out of the hinge hole 412a and are hinged to the curved rod 413.

[0065] In the above embodiment, when the crank rod 413 swings around the first hinge axis, it pushes the second hinge rod 413a on the L block 411a to swing around the mounting ring 42, so that the end of the L block 411a away from the crank rod 413 continuously moves closer to the rock wall, and finally the hanging net on the rock wall is fixed by the L block 411a.

[0066] Please see Figures 1-10 In some embodiments, a limiting strip 14 is provided at one end of the rod body 1 near the installation section 12. At least one limiting strip 14 is provided, and the limiting strip 14 is arranged axially on the outer wall of the rod body 1. The limiting strip 14 is engaged with the output end of the anchor drilling machine.

[0067] In the above embodiments, when the rod body 1 is installed by the anchor drilling machine, the output end of the anchor drilling machine is conventionally selected as a sleeve 15 with a slot. The end of the rod body 1 with the limiting strip 14 is inserted into the sleeve 15, so that the limiting strip 14 is locked in the slot. Then, the anchor rod is rotated by the rotation of the anchor drilling machine.

[0068] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

[0069] The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the various embodiments, or to enable those skilled in the art to understand the embodiments disclosed herein.

[0070] The above are merely optional embodiments of this utility model and are not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel tapered bolt anchor for coal mines, characterized in that, include: The rod (1) has an anchoring section (11) and an installation section (12), wherein the anchoring section (11) is provided with a continuous thread (13) in the circumferential direction; The first glue tank (2) is sleeved on the outer circumferential wall of the mounting section (12), and the first glue tank (2) can slide along the axial direction of the mounting section (12); The second glue tank (3) is rotatably disposed circumferentially on the mounting section (12); wherein The first glue tank (2) is located close to the anchoring section (11), and the second glue tank (3) is located at a distance from the first glue tank (2); A through hole (21) passes through the first glue tank (2) and has a first end and a second end. The first end is used to connect the inner wall of the second glue tank (3) when the first glue tank (2) is close to the second glue tank (3). The first glue tank (2) and the second glue tank (3) respectively store glue A and glue B. The second end of the through hole (21) is used to output the mixed glue of glue A and glue B to the side of the first glue tank (2) near the anchoring section (11).

2. The novel tapered bolt anchor for coal mines according to claim 1, characterized in that, The first glue tank (2) includes: The first annular body (22) is sleeved on the circumferential outer wall of the mounting section (12) of the rod (1); An annular plate (23) is installed on the side of the first annular body (22) near the anchoring section (11), and the annular plate (23) is sleeved on the installation section (12); The first annular compartment (24) is located within the first annular body (22) and is concentrically arranged with the first annular body (22); wherein The two ends of the through hole (21) pass through the first annular chamber (24) near the end of the second glue tank (3) and the end wall of the annular plate (23), respectively; The A-type adhesive is filled into the first annular chamber (24).

3. The novel tapered bolt anchor for coal mines according to claim 1, characterized in that, The second glue tank (3) includes: The inner wall of the second annular body (31) is rotatably connected to the outer wall of the rod (1); The second annular compartment (32) is located inside the second annular body (31) and is concentrically arranged with the second annular body (31); An annular glue discharge trough (33) is provided on the inner wall of the second annular chamber (32); wherein An annular glue discharge trough (33) is located on the side of the second annular chamber (32) near the first glue tank (2); An annular sealing plate (34) is disposed in the annular glue discharge groove (33), and the annular sealing plate (34) slides along the axial direction of the rod (1).

4. The novel tapered bolt anchor for coal mines according to claim 3, characterized in that, The second glue tank (3) also includes: A spring (35) is sleeved on the outer circumferential wall of the rod (1), and the spring (35) is located between the inner wall of the second annular chamber (32) and the annular sealing plate (34); The first glue tank (2) also includes: Multiple raised columns (25) are provided, and the multiple raised columns (25) are distributed in a ring on the side of the first glue tank (2) near the second glue tank (3).

5. The novel tapered bolt anchor for coal mines according to claim 1, characterized in that, The first glue tank (2) also includes: A first self-adhesive strip (26) is disposed at the first end of the through hole (21), and the first self-adhesive strip (26) is used to seal the first end of the through hole (21); A second self-adhesive strip (27) is disposed at the second end of the through hole (21), and the second self-adhesive strip (27) is used to seal the second end of the through hole (21); wherein Both the first self-adhesive strip (26) and the second self-adhesive strip (27) have a cut (28) in the middle section.

6. The novel tapered bolt anchor for coal mines according to claim 2, characterized in that, A pad assembly (4) is further provided between the first glue tank (2) and the second glue tank (3), the pad assembly (4) comprising: The pad unit (41) is provided in multiple sets, and the multiple sets of the pad unit (41) are distributed in a ring around the outer periphery of the first glue tank (2) and the second glue tank (3); An installation ring (42) is installed on the outer wall of the second glue tank (3). The installation ring (42) covers the outer periphery of the second glue tank (3). The actuating end of the pad unit (41) rotates around the installation ring (42). One end of the driving end of the pad unit (41) is connected to the first glue tank (2), and the other end is hinged to the actuating end of the pad unit (41).

7. The novel tapered bolt anchor for coal mines according to claim 6, characterized in that, The driving end of the pad unit (41) includes: The drive rod (411) is connected at one end to the side of the annular plate (23) near the second glue tank (3), and the drive rods (411) of each pad unit (41) are arranged in a ring array on the surface of the annular plate (23); The first hinge rod (412) is provided in two sets, and the two sets of the first hinge rod (412) are respectively provided on both sides of the drive rod (411); The crank (413) is provided in two sets. One end of each crank (413) is hinged to the first hinge rod (412), and the other end is hinged to both sides of the actuating end.

8. The novel tapered bolt anchor for coal mines according to claim 7, characterized in that, The actuating end of the pad unit (41) includes: L-blocks (411a), the L-blocks (411a) of each group of pad units (41) are arranged in a ring array on the outer circumferential wall of the mounting ring (42); wherein The openings of each L block (411a) face away from the rod (1); A hinge hole (412a) is provided at one end of the L block (411a) near the rod (1); The second hinge rod (413a) is rotatably disposed in the hinge hole (412a), and both ends of the second hinge rod (413a) extend out of the hinge hole (412a) and are hinged to the curved rod (413).

9. The novel tapered bolt anchor for coal mines according to claim 1, characterized in that, A limiting strip (14) is provided at one end of the rod (1) near the installation section (12). At least one limiting strip (14) is provided, and the limiting strip (14) is axially disposed on the outer circumferential wall of the rod (1). The limiting strip (14) is connected to the output end of the anchor drilling machine.

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