Automatic reset drill pipe guide for drill arms

Abstract

The present application relates to the technical field of coal mining, and discloses an automatic reset drill rod guiding device for a drill boom, a turnover support is arranged on the upper portion of a guiding support, a tension spring is arranged on the side surface of the turnover support, the number of guiding claws is two, a compression spring is arranged on the lower portion of the two guiding claws, a guiding roller is arranged on each of the two guiding claws, the device is provided with a guiding structure of a guide wheel type, the two guiding claws are provided with elastic clamping force by the compression spring, the alloy drill rod can be guided and supported by the guiding rollers during drilling, the guiding rollers are of an elastic clamping structure, are convenient to open and close, and facilitate the disassembly and assembly operation of the alloy drill rod, the turnover support of a turnover type structure is connected with the guiding rollers, the turnover support is provided with elastic restoring force by the tension spring, the automatic turnover avoidance and elastic reset of the guiding mechanism can be realized by the contact between the push block and the turnover support, the labor degree of workers is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, specifically to an automatic reset drill rod guide device for drill arms. Background Technology

[0002] Coal mining requires the excavation of numerous underground roadways. Maintaining unobstructed roadways and stable surrounding rock is of great significance for coal mine construction and safe production. Existing roadway support technologies mostly employ anchor bolt and cable support techniques. When using anchor bolt support, a deep hole is first drilled into the roof using the drill rod of an anchor bolt drilling rig to provide installation positions for the anchor bolts. Then, the anchor bolts are inserted into the borehole and anchored.

[0003] During drilling, the drill rod is relatively long and needs to be advanced while rotating. The lack of a guide structure during operation can cause the drill rod to swing excessively, resulting in problems such as difficulty in drilling positioning and inaccurate positioning that urgently need to be solved. In order to ensure the stable operation of the drill rod, a drill rod guide mechanism needs to be installed on the upper part of the anchor drilling machine. However, the existing drill rod guide mechanisms are mostly complex in structure and large in size, with a limited scope of application, making it difficult to promote them on a large scale. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic reset drill rod guide device for drill arms to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic reset drill rod guide device for a drill arm, comprising a rotating arm mechanism and a guide mechanism, wherein the rotating arm mechanism is used for drilling holes for anchor rod installation, the rotating arm mechanism comprising a drill arm support, an anchor rod drill arm, an alloy drill rod and a positioning support, wherein the anchor rod drill arm is movably disposed on the upper part of the drill arm support, and the alloy drill rod is installed on the upper part of the anchor rod drill arm; The guiding mechanism is located on the front side of the drill arm support and is used for guiding and supporting the alloy drill rod. The guiding mechanism includes a guide support, a tilting support, and guide claws. The tilting support is installed on the upper part of the drill arm support through the guide support. The tilting support is tilted and positioned on the upper part of the guide support. A tension spring is provided on the side of the tilting support. There are two guide claws. A compression spring is provided on the lower part of the two guide claws. Guide rollers are provided on both guide claws.

[0006] Preferably, the upper part of the drill arm support is provided with drill arm guide columns, and there are two sets of drill arm guide columns, with two drill arm guide columns in each set. The two sets of drill arm guide columns are vertically fixed to the top of the drill arm support.

[0007] Preferably, the aforementioned anchor drill arm is slidably connected to the upper part of the upper drill arm guide column, the alloy drill rod is fixedly clamped to the rotating shaft end of the anchor drill arm, and a push block is fixed to the front side of the anchor drill arm.

[0008] Preferably, the guide support is fixed to the front side of the drill arm support by bolts, the flip support is hinged to the upper part of the guide support, the flip support can be axially flipped forward under the pressure of the push block, there are two tension springs, the two tension springs are symmetrically arranged on both sides of the flip support, and support rollers are provided on both sides of the lower part of the guide support.

[0009] Preferably, the two guide claws are symmetrically arranged on the upper part of the flip support, the lower parts of the two guide claws are hinged together, and the compression spring is installed between the lower hinge arms of the two guide claws.

[0010] Preferably, the two guide rollers are rotatably connected to the middle of the two guide claws, and the middle of the guide rollers is provided with guide grooves.

[0011] Preferably, a support guide seat is provided on the upper part of the drill arm guide column on the lower side. The support guide seat is slidably connected to the upper part of the drill arm guide column. A support drive cylinder is fixed in the middle of the rear side of the drill arm support. The support guide seat is fixedly connected to the push rod end of the support drive cylinder.

[0012] Preferably, the front side of the drill arm support is provided with two guide support rods, both of which are movably inserted through the lower part of the guide support. The guide support rods are slidably connected to the sliding holes opened in the lower part of the front side of the drill arm support, and the rear part of the guide support rods is fixedly connected to the lower part of the support guide seat.

[0013] Preferably, the positioning support is disposed at the front end of the guide support rod, and a support connecting seat is fixedly connected to the rear part of the positioning support. The front end of the guide support rod is fixedly connected to the support connecting seat, and the positioning support is fixed to the front end of the guide support rod through the support connecting seat.

[0014] Preferably, a positioning ring seat is fixedly connected to the top of the positioning support, and a drill rod insertion hole is opened in the middle of the positioning ring seat. The alloy drill rod is movably inserted into the inner side of the drill rod insertion hole, and a positioning cone is fixed to the lower front side of the positioning support.

[0015] Compared with the prior art, the present invention, employing the above technical solution, has the following technical effects: 1. The device adopts a guide wheel type guiding structure. Guide rollers are set on the upper part of the two guide jaws, and elastic clamping force is provided to the two guide jaws by compression springs. During the drilling process, the alloy drill rod can be guided and supported by the guide rollers. The structure is simple and reliable, with small size and flexible use. It can make the alloy drill rod advance smoothly and reliably during the drilling process, which improves the working efficiency of the anchor drilling machine and ensures the quality of the borehole. It effectively solves the problems of drilling positioning difficulties and inaccurate positioning caused by the large swing amplitude of the drill rod during drilling in existing anchor drilling machines used in coal mines.

[0016] 2. The guide roller has an elastic clamping structure, which is easy to open and close and can meet the functions of taking out and putting in the alloy drill rod. It facilitates the disassembly and assembly of the alloy drill rod. In addition, the guide roller and the alloy drill rod have a movable support connection structure, which can reduce the friction loss between the alloy drill rod and the guide mechanism during the drilling process, thereby improving the service life of the guide device.

[0017] 3. A flip-type support is used to connect the guide rollers, and a tension spring provides elastic restoring force to the flip-type support. During anchor bolt installation, the guide mechanism can automatically flip and avoid obstacles by contacting the flip-type support with the push block. After the anchor bolt is anchored, the guide mechanism can automatically reset under the action of the tension spring by retracting the push block. This process does not require manual intervention, greatly reducing the labor intensity of workers and improving work efficiency. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the retracted state structure of the anchor drill arm of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure of region A in the middle; Figure 4 This is a schematic diagram of the guiding mechanism structure of the present invention; Figure 5 This is a schematic diagram of the right front side structure of the drill arm support when the drill arm is in the extended state according to the present invention; Figure 6 This is a schematic diagram of the left front side structure of the drill arm support when the drill arm is in the extended state of the present invention. Figure 7 This is a schematic diagram of the positioning support structure of the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1. Rotating arm mechanism; 2. Guide mechanism; 3. Drill arm support; 4. Anchor drill arm; 5. Alloy drill rod; 6. Positioning support; 7. Guide support; 8. Tilting support; 9. Guide chuck; 10. Tension spring; 11. Guide roller; 12. Compression spring; 13. Support roller; 14. Drill arm guide post; 15. Support guide seat; 16. Support drive cylinder; 17. Push block; 18. Guide support rod; 19. Support connecting seat; 20. Positioning ring seat; 21. Drill rod insertion hole; 22. Positioning cone. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0023] Example Please see Figure 1-7 This invention provides a technical solution: an automatic reset drill rod guide device for a drill arm, comprising a rotating arm mechanism 1 and a guiding mechanism 2. The rotating arm mechanism 1 is used for drilling holes for anchor rod installation. The rotating arm mechanism 1 includes a drill arm support 3, an anchor rod drill arm 4, an alloy drill rod 5, and a positioning support 6. A drill arm guide post 14 is provided on the upper part of the drill arm support 3. The drill arm guide post 14 is a solid steel guide post. Two sets of drill arm guide posts 14 are provided, with two drill arm guide posts 14 in each set. The two drill arm guide posts 14 are fixed together. Two sets of drill arm guide columns 14 are fixed at a fixed interval and height on the upper sides of the drill arm support 3. The two sets of drill arm guide columns 14 are vertically fixed at a fixed interval to the top of the drill arm support 3. The anchor drill arm 4 is slidably connected to the upper part of the upper drill arm guide column 14. The anchor drill arm 4 is movably connected to the upper part of the drill arm support 3 through the drill arm guide column 14. The drill arm guide column 14 can provide guidance and support for the sliding of the anchor drill arm 4. The alloy drill rod 5 is fixedly clamped to the rotating shaft end of the anchor drill arm 4 through a chuck. The alloy drill rod 5 is used for drilling the anchor rod.

[0024] A support guide seat 15 is slidably connected to the upper part of the lower drill arm guide post 14. The drill arm guide post 14 provides support and guidance for the sliding of the support guide seat 15. A support drive cylinder 16 is fixed in the middle of the rear side of the drill arm support 3. The support drive cylinder 16 is a hydraulic telescopic cylinder. The support guide seat 15 is fixedly connected to the push rod end of the support drive cylinder 16. The support drive cylinder 16 can drive the support guide seat 15 to perform horizontal sliding movement. A guide support rod 18 is provided on the front side of the drill arm support 3. The guide support rod 18 is a steel sliding column. There are two guide support rods 18. Both guide support rods 18 are movably inserted through the lower part of the guide support 7. The guide support rod 18 is slidably connected to the sliding hole opened in the lower front side of the drill arm support 3. The rear part of the guide support rod 18 is fixedly connected to the lower part of the support guide seat 15. The support drive cylinder 16 drives the support guide seat 15 to perform horizontal sliding movement, which can drive the guide support rod 18 to perform telescopic movement.

[0025] The positioning support 6 is located at the front end of the guide support rod 18. A support connecting seat 19 is fixedly connected to the rear of the positioning support 6. The positioning support 6 is fixed to the front end of the guide support rod 18 through the support connecting seat 19. A positioning ring seat 20 is fixedly connected to the top of the positioning support 6. A drill rod insertion hole 21 is opened in the middle of the positioning ring seat 20. The alloy drill rod 5 is movably inserted into the inner side of the drill rod insertion hole 21. The positioning support 6 can support and position the end of the alloy drill rod 5, which can facilitate drilling operations. A positioning cone 22 is fixed to the lower front side of the positioning support 6. The positioning cone 22 is a metal insertion post with a cone head. There are two positioning cones 22. The two positioning cones 22 are symmetrically fixed on both sides of the front of the positioning support 6. Under the drive of the guide support rod 18, the positioning cones 22 are inserted into the mine wall, which can support and fix the front side of the drill arm support 3 and position the drilling position of the alloy drill rod 5.

[0026] The guide mechanism 2 is located on the front side of the drill arm support 3 for guiding and supporting the alloy drill rod 5. The guide mechanism 2 includes a guide support 7, a tilting support 8, and a guide claw 9. The guide support 7 is fixed to the front side of the drill arm support 3 by bolts. The tilting support 8 is hinged to the upper part of the guide support 7. A push block 17 is fixed on the front side of the anchor drill arm 4. The push block 17 moves with the anchor drill arm 4. When the anchor is installed, the push block 17 contacts the tilting support 8. Under the push of the push block 17, the tilting support 8 can be tilted axially forward, which can realize the self-alignment of the guide mechanism 2. The rotating support 8 has two tension springs 10 on its sides. The two tension springs 10 are symmetrically arranged on both sides of the rotating support 8. The upper end of the tension spring 10 is bolted to the upper side of the rotating support 8, and the lower end of the tension spring 10 is bolted to the side of the guide support 7. After the anchor rod is anchored, it retracts through the push block 17. The guide mechanism 2 can automatically reset under the action of the tension spring 10. The lower two sides of the guide support 7 are provided with support rollers 13. After the rotating support 8 is rotated, the tension spring 10 can be supported by the support rollers 13.

[0027] There are two guide jaws 9, symmetrically arranged on the upper part of the flip support 8. The lower parts of the two guide jaws 9 are hinged together, and a compression spring 12 is installed on the lower part of the two guide jaws 9. The compression spring 12 is installed between the lower hinge arms of the two guide jaws 9, which can provide a rebound force for the closed clamping of the guide jaws 9. The guide jaws 9 adopt the lever principle, and the compression spring 12 ensures that the two guide jaws 9 are subjected to the same and uniform force. The guide roller 11 is an elastic clamping structure, which is easy to open and close and can meet the functions of taking out and putting in the alloy drill rod 5, facilitating the disassembly and assembly of the alloy drill rod 5. Each of the two guide jaws 9 is equipped with a guide roller 11, which is rotatably connected to the middle of the two guide jaws 9. The middle of the guide roller 11 is provided with a guide groove, which is adapted to the alloy drill rod 5. The two guide jaws 9 contact the alloy drill rod 5 through the guide roller 11, guiding and supporting the movement of the alloy drill rod 5. The guide roller 11 and the alloy drill rod 5 have a movable support connection structure, which can reduce the frictional loss between the alloy drill rod 5 and the guide mechanism 2 during the drilling process, thereby improving the service life of the guide device.

[0028] The working principle or structural principle is as follows: First, the anchor bolt drilling operation is performed. During drilling, a suitable alloy drill rod 5 is selected and installed on the upper part of the anchor bolt drill arm 4. During installation, the alloy drill rod 5 can be inserted and removed by a robotic arm above the guide claws 9. Guide rollers 11 are installed in the middle of the guide claws 9, surrounding the circumference of the alloy drill rod 5. The guide claws 9 utilize a lever principle, with compression springs 12 ensuring equal and uniform force on both guide claws 9. The two guide claws 9 contact the alloy drill rod 5 through the guide rollers 11, guiding and supporting the movement of the alloy drill rod 5. After the alloy drill rod 5 is installed, the device is oriented towards the drilling area, and... The front end of the device is supported and positioned by the positioning support 6. Then, the alloy drill rod 5 is driven to rotate to complete the drilling operation on the upper part of the mine wall. After that, the anchor rod is installed. When installing the anchor rod, the alloy drill rod 5 is first removed and then the anchor rod is installed on the shaft end of the anchor rod drill arm 4. The anchor rod is rotated and installed into the inside of the borehole by the anchor rod drill arm 4. When the anchor rod is about to be installed, the pushing block 17 on the front side of the anchor rod drill arm 4 contacts the flip support 8 on the upper part of the guide support 7. By pushing, the flip support 8 can be automatically flipped to avoid and detached from the upper part of the anchor rod. After the anchor rod is anchored, the pushing block 17 retracts and the flip support 8 can be automatically reset under the action of the tension spring 10, thus completing the installation of the anchor rod.

[0029] In summary, the device adopts a guide wheel-type guiding structure. Guide rollers 11 are installed on the upper part of the two guide jaws 9, and a compression spring 12 provides elastic clamping force to the two guide jaws 9. During drilling, the guide rollers 11 guide and support the alloy drill rod 5. The structure is simple and reliable, with a small size and high flexibility of use. It enables the alloy drill rod 5 to advance smoothly and reliably during drilling, improving the working efficiency of the anchor drilling machine while ensuring the quality of the borehole. It effectively solves the problems of difficult and inaccurate borehole positioning caused by the large swing amplitude of the drill rod in existing anchor drilling machines used in coal mines. Furthermore, the guide rollers 11 are elastic clamping structures, which are easy to open and close, facilitating the removal and insertion of the alloy drill rod 5. The guide roller 11 and the alloy drill rod 5 are designed to facilitate disassembly and assembly. The guide roller 11 and the alloy drill rod 5 have a movable support connection structure, which reduces frictional loss between the alloy drill rod 5 and the guide mechanism 2 during drilling, thereby improving the service life of the guide device. Furthermore, a flip-type support 8 connects to the guide roller 11, and a tension spring 10 provides elastic restoring force to the flip-type support 8. During anchor bolt installation, the push block 17 contacts the flip-type support 8, enabling the guide mechanism 2 to automatically flip and avoid obstacles. After the anchor bolt is anchored, the push block 17 retracts, and the guide mechanism 2 automatically resets under the action of the tension spring 10. This process requires no manual intervention, greatly reducing the workload of workers and improving work efficiency.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. It should be noted that implementations not illustrated or described in the drawings or the main text of the specification are forms known to those skilled in the art and are not described in detail. Furthermore, the definitions of the components described above are not limited to the various specific structures, shapes, or methods mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0031] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic reset drill rod guide device for drill arms, comprising a rotating arm mechanism (1) and a guide mechanism (2), characterized in that: The rotating arm mechanism (1) is used for drilling holes for anchor bolt installation. The rotating arm mechanism (1) includes a drill arm support (3), an anchor bolt drill arm (4), an alloy drill rod (5), and a positioning support (6). The anchor bolt drill arm (4) is movably disposed on the upper part of the drill arm support (3), and the alloy drill rod (5) is installed on the upper part of the anchor bolt drill arm (4). The guide mechanism (2) is located on the front side of the drill arm support (3) and is used for the guide support of the alloy drill rod (5). The guide mechanism (2) includes a guide support (7), a flip support (8) and a guide claw (9). The flip support (8) is installed on the upper part of the drill arm support (3) through the guide support (7). The flip support (8) is flipped and located on the upper part of the guide support (7). A tension spring (10) is provided on the side of the flip support (8). There are two guide claws (9). A compression spring (12) is provided on the lower part of the two guide claws (9). A guide roller (11) is provided on each of the two guide claws (9). The upper part of the drill arm support (3) is provided with a drill arm guide column (14). There are two sets of drill arm guide columns (14), and each set has two drill arm guide columns (14). The two sets of drill arm guide columns (14) are vertically fixed to the top of the drill arm support (3). The front side of the anchor drill arm (4) is fixed with a push block (17), the guide support (7) is fixed to the front side of the drill arm support (3) by bolts, the flip support (8) is hinged to the upper part of the guide support (7), the flip support (8) can be flipped axially to the front side under the push of the push block (17), there are two tension springs (10), the two tension springs (10) are symmetrically arranged on both sides of the flip support (8), and the lower two sides of the guide support (7) are provided with support rollers (13). The two guide claws (9) are symmetrically arranged on the upper part of the flip support (8), and the lower parts of the two guide claws (9) are hinged together. The compression spring (12) is installed between the lower hinge arms of the two guide claws (9). The two guide rollers (11) are rotatably connected to the middle of the two guide claws (9), and the middle of the guide rollers (11) is provided with guide grooves.

2. The automatic reset drill rod guide device for drill arms according to claim 1, characterized in that: The anchor drill arm (4) is slidably connected to the upper part of the upper drill arm guide post (14), and the alloy drill rod (5) is fixedly clamped to the rotating shaft end of the anchor drill arm (4).

3. The automatic reset drill rod guide device for drill arms according to claim 1, characterized in that: A support guide seat (15) is provided on the upper part of the lower drill arm guide column (14). The support guide seat (15) is slidably connected to the upper part of the drill arm guide column (14). A support drive cylinder (16) is fixed in the middle of the rear side of the drill arm support (3). The support guide seat (15) is fixedly connected to the push rod end of the support drive cylinder (16).

4. The automatic reset drill rod guide device for drill arms according to claim 3, characterized in that: The front side of the drill arm support (3) is provided with a guide support rod (18). There are two guide support rods (18). Both guide support rods (18) are movably inserted through the lower part of the guide support (7). The guide support rods (18) are slidably connected to the sliding hole opened in the lower part of the front side of the drill arm support (3). The rear part of the guide support rod (18) is fixedly connected to the lower part of the support guide seat (15).

5. The automatic reset drill rod guide device for drill arms according to claim 4, characterized in that: The positioning support (6) is located at the front end of the guide support rod (18). The rear part of the positioning support (6) is fixedly connected to the support connecting seat (19). The front end of the guide support rod (18) is fixedly connected to the support connecting seat (19). The positioning support (6) is fixed to the front end of the guide support rod (18) through the support connecting seat (19).

6. The automatic reset drill rod guide device for drill arms according to claim 5, characterized in that: The top of the positioning support (6) is fixedly connected to a positioning ring seat (20), and a drill rod insertion hole (21) is opened in the middle of the positioning ring seat (20). The alloy drill rod (5) is movably inserted into the inner side of the drill rod insertion hole (21), and a positioning cone (22) is fixed on the lower front side of the positioning support (6).

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