An integrated device for installing coal mine anchor bolts and a method of using the same

Abstract

The present invention discloses an integrated device for installing coal mine anchors and a method for using the same. The device is used in conjunction with an anchor bolt machine. The integrated device for installing the anchor bolt comprises: a nut installation mechanism, an anchor bolt installation mechanism and an anchor bolt limiting mechanism. The upper part of the nut installation mechanism is provided with an empty slot matching the nut along the length direction, and the lower part of the empty slot is provided with two installation holes axially through the empty slot. The anchor bolt limiting mechanism is overlapped on the nut installation mechanism through the installation hole through the empty slot. The anchor bolt installation mechanism is installed in the empty slot and located above the installation hole. Its outer diameter matches the inner diameter of the empty slot. A threaded hole matching the anchor bolt is radially provided through the center of the anchor bolt installation mechanism. The nut installation mechanism is connected to the output shaft of the cutting mechanism of the anchor bolt machine. The present invention utilizes the rotation of the cutting mechanism of the anchor bolt machine and the extension and retraction of the legs to provide rotational power to the device, completes the entire process of anchor bolt installation and nut tightening, reduces the use of installation tools, simplifies the anchor bolt installation process, and improves support efficiency.

Description

Technical Field

[0001] The invention relates to a coal mine supporting device, in particular to an integrated device for installing coal mine anchor rods and a use method thereof, belonging to the field of coal mine supporting equipment. Background Art

[0002] At present, the main support forms used in coal mine tunnel excavation include anchor support, scaffolding support or other combined support forms. Among them, anchor support has the advantages of active support, low labor intensity, low support cost, and fast tunneling speed, and has become the most commonly used support form. Anchor installation is a very important process in anchor support. Its main steps are mixing anchor drugs, installing anchors, and tightening nuts. The quality of anchor installation is the key to controlling the deformation of the surrounding rock. When the anchor is exposed too long, the preload is insufficient, and the anchoring length is insufficient, the anchor support will fail, causing the overall or local deformation of the tunnel to be large, and it is easy to cause accidents such as roof collapse, rock spalling, and nut collapse and injury, which brings great safety hazards to coal mine production safety. At the same time, the tunnel is frequently repaired during the use period, resulting in waste of manpower, material resources, and financial resources.

[0003] At present, the anchor installation tools mainly use two devices, anchor mixer and nut sleeve, in conjunction with the anchor drilling machine. Since two devices with different functions are used, the anchor installation can be divided into two steps: first, install the anchor mixer, extend the legs and rotate the cutting mechanism to drive the anchor mixer to rotate the anchor, stir the anchor and anchor the anchor, then retract the anchor machine legs and remove the anchor mixer from the tail end of the anchor; second, install the nut sleeve, extend the legs and rotate the cutting mechanism to drive the nut sleeve to tighten the nut, then retract the anchor machine legs, remove the nut sleeve, and complete the anchor installation. Because the two steps require the use of devices with different functions, it is necessary to repeatedly extend and lower the anchor machine legs to complete the installation and disassembly of different devices, which makes the process very cumbersome and increases the process time of anchor support. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated device for installing coal mine anchors and a method of using the same, which simultaneously has the functions of rotating the anchor and tightening the nut, thereby simplifying the anchor installation process, thereby improving support efficiency and reducing workers' labor intensity and safety risks.

[0005] The technical solution adopted by the present invention is an integrated device for installing coal mine anchors, which is used in conjunction with an anchor, a nut and an anchor machine. The integrated device for installing an anchor comprises:

[0006] The nut mounting mechanism is a columnar structure with a predetermined length, the upper portion of which is provided with an empty slot matching the nut along the length direction, and the nut mounting mechanism is provided with two mounting holes radially extending through the empty slot at the lower portion of the empty slot, the two mounting holes being respectively located on the side wall of the nut mounting mechanism; the lower portion of the nut mounting mechanism is a rod structure matching the output shaft (5) of the bolting machine cutting mechanism;

[0007] An anchor rod installation mechanism, the anchor rod installation mechanism is installed in the empty slot and located above the installation hole, its cross section matches the cross section of the empty slot and the outer diameter of the anchor rod installation mechanism matches the inner diameter of the empty slot, and a threaded hole matching the anchor rod is axially penetrated in the center of the anchor rod installation mechanism;

[0008] The anchor rod limiting mechanism is a rod body with a diameter matching the mounting hole, which passes through the mounting hole and passes through the empty slot to overlap the nut mounting mechanism.

[0009] Furthermore, the upper portion of the nut mounting mechanism is a cylindrical structure, and the lower portion is a hexagonal rod body that matches the output shaft of the bolter cutting mechanism.

[0010] Furthermore, the cross section of the nut is a hexagon, and the cross sections of the empty slot and the anchor rod mounting mechanism are hexagons that match the nut.

[0011] Furthermore, the length of the anchor rod limiting mechanism is greater than the outer diameter of the nut mounting mechanism, and a pull ring is provided at one end of the anchor rod limiting mechanism, and a circular hole is opened at the other end.

[0012] A method for using an integrated device for installing a coal mine anchor comprises the following steps:

[0013] Step 1: After using the anchor rod to deliver the anchor to the bottom of the hole, pre-install the nut and tray on the anchor rod;

[0014] Step 2: Place the anchor rod limiting mechanism horizontally on the nut mounting mechanism through the mounting hole, and the initial exposed length of the anchor rod can be preset. Then, install the anchor rod mounting mechanism into the empty slot of the nut mounting mechanism and make contact with the anchor rod limiting mechanism;

[0015] Step 3: Connect the nut installation mechanism and the output shaft of the bolting machine cutting mechanism, extend the bolting machine legs, install the bolt from step 1 into the nut installation mechanism, then start the bolting machine cutting mechanism, and screw the bolt into the bolt installation mechanism;

[0016] Step 4: The bolt machine cutting mechanism continues to rotate, and the nut installation mechanism and the bolt installation mechanism drive the bolt to rotate to stir the anchor and tighten the nut. The bolt is pushed into the bolt hole by extending the legs, and the bolt is installed to the preset initial exposed length and the tray is installed to fit the rock surface of the roadway;

[0017] Step 5: Remove the anchor rod limiting mechanism, slide the anchor rod installation mechanism downward in the nut installation mechanism, and drive the nut installation mechanism to rotate through the anchor rod cutting mechanism, so that the nut is tightened along the anchor rod to add pre-tightening force to the anchor rod;

[0018] Step 6: Pull down the nut installation mechanism to make the nut completely exposed outside the nut installation mechanism, remove the integrated device by rotating the nut installation mechanism in the opposite direction, and complete the installation of the anchor rod and nut.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The present invention is designed according to the device principle, operation method and technical requirements of anchor bolt installation. The anchor bolt installation mechanism is installed into the matching nut installation mechanism, and the lower part of the nut installation mechanism is connected to the output shaft of the anchor bolt machine cutting mechanism. The anchor bolt passes through the anchor bolt installation mechanism and the two are threadedly connected. The output shaft of the anchor bolt machine cutting mechanism is started to rotate, which drives the nut installation mechanism and the anchor bolt installation mechanism to rotate synchronously. Accordingly, the anchor bolt installation mechanism and the anchor bolt rotate relative to each other, and the processes of anchoring the anchor bolt, tightening the nut and stirring the anchor are realized at the same time, which reduces the use of installation tools, simplifies the anchor bolt installation process, improves the support efficiency, reduces the labor intensity and safety risks of workers, and achieves a good use effect.

[0021] 2) The upper part of the nut installation mechanism is a cylinder, and the cylinder is radially provided with an empty slot with a hexagonal cross section, and the empty slot meets the requirements of nut installation. In addition, under this structure, when the nut installation mechanism rotates, a good clamping effect is generated on the anchor rod installation mechanism and the nut, so that the anchor rod installation mechanism and the nut rotate accordingly, thereby realizing the installation of the anchor rod;

[0022] 3) This design reserves the initial exposed length of the anchor rod by setting up an anchor rod limiting mechanism, and a pull ring is set at one end of the anchor rod limiting mechanism, and a round hole is opened at the other end. On the one hand, when in use, a wire is inserted into the round hole to fix the anchor rod limiting mechanism. On the other hand, after the anchor rod is installed, it is convenient to remove the anchor rod limiting mechanism through the pull ring to realize the downward movement of the anchor rod installation mechanism to detach from the anchor rod. After the nut installation mechanism is pulled down so that the nut is located outside the nut installation mechanism, the integrated device can be removed by rotating the nut installation mechanism in the opposite direction, and the installation and disassembly operations are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is the installation schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the use process of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme, method of use and advantages of the present invention more clear, the present invention is further described in detail with reference to the following embodiments and the accompanying drawings of this specification.

[0027] Embodiment 1:

[0028] As attached Figure 1 , Figure 2 As shown, an integrated device for installing coal mine anchors is used in conjunction with an anchor 6, a nut 7 and an anchor machine. The integrated device for installing the anchor includes a nut installation mechanism 1, an anchor installation mechanism 2 and an anchor limiting mechanism 3.

[0029] The nut mounting mechanism 1 is a column structure with a predetermined length, specifically, its upper part is a cylindrical structure, which is convenient for installation and use, and the lower part is a hexagonal rod body matching the output shaft 5 of the bolter cutting mechanism, and the hexagonal rod body is conducive to the stable clamping of the output shaft 5 of the bolter cutting mechanism. The upper part of the nut mounting mechanism 1 is provided with an empty slot matching the nut 7 along the length direction, and two mounting holes 4 are radially provided on the nut mounting mechanism 1 at the lower part of the empty slot and through the empty slot, and the two mounting holes 4 are respectively located at opposite ends of the nut mounting mechanism 1.

[0030] The anchor rod installation mechanism 2 is installed in the empty groove above the installation hole 4. It is a columnar structure with a threaded hole running axially through the center. Its cross-section matches the cross-section of the empty groove and the outer diameter of the anchor rod installation mechanism 2 matches the inner diameter of the empty groove (the outer wall surface of the anchor rod installation mechanism matches the inner wall surface of the empty groove). The diameter of the threaded hole matches the outer diameter of the anchor rod 6 and is used to install the anchor rod 6.

[0031] The anchor rod limiting mechanism 3 is a rod body whose diameter matches the mounting hole 4. The length of the anchor rod limiting mechanism 3 is greater than the outer diameter of the nut mounting mechanism 1. The anchor rod limiting mechanism 3 passes through the mounting hole 4 and then overlaps the nut mounting mechanism 1. A pull ring is provided at one end of the anchor rod limiting mechanism 3 and a circular hole is provided at the other end. The pull ring is located outside the nut mounting mechanism 1 to facilitate taking out the anchor rod limiting mechanism 3. The circular hole is used to insert a wire to fix the anchor rod limiting mechanism 3 to prevent the anchor rod limiting mechanism 3 from being thrown out during use.

[0032] Furthermore, the cross-section of the nut 7 is hexagonal, and the cross-section of the empty slot and the anchor rod mounting mechanism 2 are hexagonal shapes that match the nut 7. During installation, the nut 7 is inserted into the nut mounting mechanism 1, and the nut mounting mechanism 1 is used to drive the nut 7 to rotate and tighten. The anchor rod mounting mechanism 2 is used in conjunction with the nut mounting mechanism 1.

[0033] like Figure 3 As shown, a method for using an integrated device for installing coal mine anchors comprises the following steps:

[0034] Step 1: After the anchor is delivered to the bottom of the hole using the anchor rod 6, a nut 7 and a tray are pre-installed on the anchor rod 6, and the tray is located on the side close to the rock surface of the tunnel;

[0035] Step 2: Place the anchor rod limiting mechanism 3 horizontally on the nut mounting mechanism 1 through the mounting hole 4, and preset the initial exposed length of the anchor rod 6. Then install the anchor rod mounting mechanism 2 into the empty slot of the nut mounting mechanism 1 and make contact with the anchor rod limiting mechanism 3;

[0036] Step 3: Connect the nut installation mechanism 1 and the output shaft 5 of the bolting machine cutting mechanism, extend the bolting machine legs, install the anchor 6 and nut 7 into the nut installation mechanism 1, then start the bolting machine cutting mechanism, and screw the anchor 6 into the bolt installation mechanism 2;

[0037] Step 4: The bolt machine cutting mechanism continues to rotate, and the nut installation mechanism 1 and the bolt installation mechanism 2 drive the bolt 6 to rotate to stir the anchor and tighten the nut 7, and the bolt 6 is pushed into the bolt hole by extending the legs, and the bolt 6 is installed to the preset initial exposed length and the tray is installed to fit the rock surface of the roadway;

[0038] Step 5: Remove the anchor rod limiting mechanism 3, slide the anchor rod installation mechanism 2 downward in the nut installation mechanism 1, and drive the nut installation mechanism 1 to rotate through the anchor rod cutting mechanism, so that the nut 7 is tightened along the anchor rod 6 until the required torque is reached and then stops, adding pre-tightening force to the anchor rod 6;

[0039] Step 6: Pull down the nut installation mechanism 1 to make the nut 7 completely exposed outside the nut installation mechanism 1, and remove the integrated device by rotating the nut installation mechanism 1 in the opposite direction to complete the installation of the anchor rod 6 and the tightening of the nut 7.

[0040] The present invention connects the anchor rod 6 through the internal thread of the anchor rod installation mechanism 2, and utilizes the anchor rod installation mechanism 2 to rotate under the drive of the nut installation mechanism 1 to realize the anchor rod 6 rotation, anchor stirring and anchoring process of the anchor rod 6, and utilizes the hexagonal device inside the nut installation mechanism 1 to tighten the nut 7; in addition, during operation, the rotation of the anchor rod machine cutting mechanism and the extension and retraction of the legs are utilized to provide rotational power to the device, and the rotation of the integrated device and the advancement of the anchor rod 6 are realized by connecting the nut installation mechanism 1 and the output shaft 5 of the anchor rod machine cutting mechanism; technically, combined with the standard of the allowable exposed length of the anchor rod 6, the pre-setting of the exposed length of the anchor rod 6 is realized through the anchor rod limiting mechanism 3.

[0041] The integrated anchor rod installation device completes the entire process of rotating the anchor rod 6, stirring the anchor agent, anchoring the anchor rod 6, and tightening the nut 7 through the cooperation of the nut installation mechanism 1, the anchor rod installation mechanism 2, and the anchor rod limiting mechanism 3 at different positions, reduces the use of installation tools, simplifies the anchor rod 6 installation process, improves support efficiency, and greatly reduces the labor intensity and safety risks of workers, and has practical significance for promotion and use.

[0042] The parts not described in detail in the present invention are all known technologies to those skilled in the art. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical equipment, devices or solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An integrated device for installing coal mine anchors, which is used in conjunction with an anchor (6), a nut (7) and an anchor machine, and is characterized in that: The integrated device for anchor rod installation comprises: A nut mounting mechanism (1), the nut mounting mechanism (1) being a columnar structure with a predetermined length, the upper portion of which is provided with an empty slot along the length direction and matching with the nut (7), and the nut mounting mechanism (1) having two mounting holes (4) radially extending through the empty slot at the lower portion of the empty slot, the two mounting holes (4) being respectively located on the side walls of the nut mounting mechanism (1); the lower portion of the nut mounting mechanism (1) being a rod structure matching with the output shaft (5) of the bolting machine cutting mechanism; An anchor rod installation mechanism (2), the anchor rod installation mechanism (2) being installed in the empty slot and located above the installation hole (4), the cross section of the anchor rod installation mechanism (2) matching the cross section of the empty slot and the outer diameter of the anchor rod installation mechanism (2) matching the inner diameter of the empty slot, and a threaded hole matching the anchor rod (6) being provided through the central axial direction of the anchor rod installation mechanism (2); An anchor rod limiting mechanism (3), the anchor rod limiting mechanism (3) being a rod body having a diameter matching the mounting hole (4), passing through the mounting hole (4) and penetrating the empty slot to overlap the nut mounting mechanism (1); The upper part of the nut mounting mechanism (1) is a cylindrical structure, and the lower part is a hexagonal rod body that matches the output shaft (5) of the bolt machine cutting mechanism. The cross section of the nut (7) is a hexagon, and the cross section of the empty slot and the bolt mounting mechanism (2) is a hexagon that matches the nut (7).

2. The integrated device for installing coal mine bolts according to claim 1, characterized in that: The length of the anchor rod limiting mechanism (3) is greater than the outer diameter of the nut mounting mechanism (1), and a pull ring is provided at one end of the anchor rod limiting mechanism (3) and a circular hole is provided at the other end.

3. A method for using the integrated device for installing coal mine anchors according to any one of claims 1-2, characterized in that: The following steps are involved: Step 1: After the anchoring agent is delivered to the bottom of the hole using the anchor rod (6), a nut (7) and a tray are pre-installed on the anchor rod (6); Step 2: Place the anchor rod limiting mechanism (3) horizontally on the nut mounting mechanism (1) through the mounting hole (4), and preset the initial exposed length of the anchor rod (6). Then, install the anchor rod mounting mechanism (2) into the empty groove of the nut mounting mechanism (1) and make contact with the anchor rod limiting mechanism (3); Step 3: Connect the nut mounting mechanism (1) to the output shaft (5) of the bolting machine cutting mechanism, extend the bolting machine legs, install the bolt (6) and nut (7) into the nut mounting mechanism (1), then start the bolting machine cutting mechanism, and screw the bolt (6) into the bolt mounting mechanism (2); Step 4: The bolt machine cutting mechanism continues to rotate, and the nut installation mechanism (1) and the bolt installation mechanism (2) drive the bolt (6) to rotate to stir the anchor and tighten the nut (7), and the bolt (6) is pushed into the bolt hole by extending the legs, so that the bolt (6) is installed to the preset initial exposed length and the tray is installed to fit the rock surface of the tunnel; Step 5: Remove the anchor rod limiting mechanism (3), slide the anchor rod installation mechanism (2) downward in the nut installation mechanism (1), and drive the nut installation mechanism (1) to rotate through the anchor rod cutting mechanism, so that the nut (7) is tightened along the anchor rod (6), thereby adding a pre-tightening force to the anchor rod (6); Step 6: Pull down the nut mounting mechanism (1) so that the nut (7) is completely exposed outside the nut mounting mechanism (1), and the integrated device is removed by rotating the nut mounting mechanism (1) in the opposite direction, thereby completing the installation of the anchor rod (6) and the tightening of the nut (7).

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