Anchor rod supporting mechanism

Abstract

The invention provides an anchor rod supporting mechanism which comprises a plurality of supporting beams, a plurality of supporting rods, a sliding ring, an anchor rod drilling machine, a sliding ring pushing unit and a plurality of supporting plates. A supporting seat is arranged at the top of the jumbolter; the multiple supporting beams are arranged in the circumferential direction of the top of the jumbolter, and the head end of each supporting beam is hinged to the supporting base. The supporting plates are arranged between the adjacent supporting beams; the slip ring sleeves the periphery of the jumbolter; the multiple supporting rods are hinged to the corresponding supporting beams and the corresponding sliding rings respectively. The slip ring pushing unit is installed on the jumbolter and used for driving the slip ring to move upwards along the axis of the jumbolter, so that the supporting beam is unfolded, and a temporary supporting face covering an anchor rod supporting operation area of the jumbolter is formed. The problems that the danger that miners are harmed by roof fall and the health of the miners is harmed by muddy water due to position deviation of a support and anchor rod construction area are effectively avoided, and the reliability of an anchor rod support mechanism is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of underground roadway support technology in coal mines, and particularly to an anchor bolt support mechanism. Background Technology

[0002] Intelligent anchor bolt support is a key technology for achieving the goal of "reducing manpower and increasing efficiency" in coal mines, and also an important component of intelligent coal mining equipment. However, as... Figure 1 As shown, the temporary support mechanism 3 adapted to the traditional anchor drilling rig 2 has significant deficiencies in its structural and functional design: the traditional temporary support 3 is set up separately from the traditional anchor drilling rig 2, resulting in a gap between the canopy of the traditional temporary support mechanism 3 and the traditional anchor drilling rig 2 during top anchoring operations; while side anchoring operations generally lack effective temporary support measures. This situation of delayed or missing support can easily lead to roof collapse accidents, seriously threatening the safety of operators.

[0003] Furthermore, the water, coal gangue, and high-concentration dust (a mixture of sewage and coal dust 4) generated during anchor bolt construction can easily splash onto the electrical system, hydraulic control components, and sealing parts of the traditional anchor bolt drilling rig 2. This not only accelerates equipment aging, induces oil leaks and electrical faults, and reduces the overall reliability of the machine, but may also directly contaminate the operators' bodies, endangering their occupational health. At the same time, the problems of untimely response and insufficient coverage area of ​​the traditional temporary support section 3 further worsen the working environment of the anchor bolt machine operator, restricting support efficiency and operational safety. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this invention is to provide an anchor bolt support mechanism that has good protective performance and can improve the timeliness of anchor bolt support and operational safety.

[0006] To achieve the above objectives, this invention proposes a bolt support mechanism, comprising: multiple support beams, multiple support rods, a slip ring, a bolt drilling rig, a slip ring pushing unit, and multiple support plates; the bolt drilling rig is provided with a support seat at its top; the multiple support beams are arranged circumferentially along the top of the bolt drilling rig, and the first end of each support beam is hinged to the support seat; the support plates are disposed between adjacent support beams; the slip ring is sleeved on the outer periphery of the bolt drilling rig; the multiple support rods are respectively hinged to the corresponding support beams and the slip ring; the slip ring pushing unit is installed on the bolt drilling rig and is used to drive the slip ring to move upward along the axis of the bolt drilling rig, causing the support beams to unfold, press against the roadway roof, and form a temporary support surface covering the bolt support operation area of ​​the bolt drilling rig.

[0007] According to one embodiment of the present invention, the system further includes multiple auxiliary support beams, an inner bearing chain, and an outer bearing chain. The auxiliary support beams are arranged circumferentially along the top of the anchor drilling rig, and the first end of each auxiliary support beam is hinged to the support base. The auxiliary support beams and the support beam are arranged alternately in the circumferential direction. The inner bearing chain is hinged to the middle of the support beam and the auxiliary support beam, respectively. The outer bearing chain is hinged to the end of the support beam and the auxiliary support beam, respectively.

[0008] According to one embodiment of the present invention, the anchor drilling rig is equipped with a drill box, a slide, a lug, a slide feed cylinder, and a guide rail; the slip ring pushing unit includes a push rod and a frame; The frame is mounted on the anchor drilling rig; the slip ring is sleeved around the frame and can slide along its axial direction; the slide is located inside the frame, and the slide includes four parallel guide columns and a slide top plate and a slide bottom plate respectively connected to both ends of the guide columns; the drill box is mounted inside the slide via a chain for performing drilling operations; the guide rail is fixed to the frame, and the guide columns and the guide rail form a moving pair that engages the hole shaft, allowing the slide to reciprocate up and down along the drilling direction; the cylinder end of the slide feed cylinder is connected to the frame via the lug, and the piston rod end of the slide feed cylinder is connected to the slide top plate; the push rod is connected to the outside of the slide and is used to push the lower end face of the slip ring.

[0009] According to one embodiment of the present invention, the number of push rods is two, which are arranged symmetrically at 180 degrees along the circumference of the anchor drilling rig.

[0010] According to one embodiment of the present invention, a micro-strain sensor is further included, which is disposed at the top end of the push rod and is used to detect the pressure exerted by the push rod on the slip ring, thereby providing overload safety protection.

[0011] According to one embodiment of the present invention, a limiting ring is further included, which is mounted on the frame and located above the slip ring.

[0012] According to one embodiment of the present invention, a slip ring limiting unit is further included, which is disposed on the frame; when the slip ring moves to a preset height, the slip ring limiting unit automatically extends outward radially and abuts against the lower end face of the slip ring to prevent the slip ring from sliding down axially.

[0013] According to one embodiment of the present invention, the slip ring limiting unit includes an electromagnet, a frame support beam, an elastic element, and a limiting block. The frame support beam is provided with radial mounting holes. The electromagnet, the elastic element, and the limiting block are arranged sequentially in the mounting holes, arranged radially from the inside to the outside. The elastic element is connected to the limiting block at one end near the radially outer side of the anchor drilling rig.

[0014] According to one embodiment of the present invention, the limiting block is provided with a guide surface at one end in the radially outward direction, and the guide surface gradually converges inward from top to bottom in the vertical direction.

[0015] According to one embodiment of the present invention, a stress sensor is further included. The stress sensor is disposed on the limiting ring and is used to detect the pressure of the support rod on the limiting ring. When the pressure exceeds a preset value, the electromagnet is de-energized and the limiting block extends under the action of the elastic element.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The anchor bolt support mechanism of the present invention designs the anchor bolt drilling rig and the temporary support unit as a single component, realizing that the support is set up wherever the anchor bolt is constructed. This effectively avoids the problems of roof collapse injury to miners and mud and water hazards to miners caused by the positional deviation between the support and the anchor bolt construction area. It also effectively prevents water and dust from entering the drilling rig moving parts, key control components, and hydraulic control valves, thus effectively improving the reliability of the support mechanism.

[0017] 2. The bolt support mechanism of the present invention effectively avoids the problem of lack of temporary support in side bolt support. Whether the roadway roof bolts or side bolts are installed, temporary support can be provided; wherever the bolt support is installed, the temporary support is also installed, significantly improving the safety of bolt support operations and thus possessing high practicality.

[0018] 3. During anchor bolt operation, the temporary support mechanism of this invention provides safety by extending during anchor bolting. When the operation stops, the temporary support retracts, freeing up space for easy relocation of the drilling rig. The integrated design of the temporary support and the anchor bolt drilling rig effectively reduces the support area and minimizes ineffective temporary support space, thus significantly contributing to weight reduction and miniaturization of anchor bolt drilling rigs.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein: Figure 1 This is a schematic diagram of the support provided by traditional temporary support systems and traditional anchor drilling rigs in existing technologies.

[0021] Figure 2 This is a schematic diagram of the anchor bolt support mechanism proposed in an embodiment of the present invention.

[0022] Figure 3 This is a top view of an anchor bolt support mechanism according to an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the lower part of the anchor bolt support mechanism in one embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the slip ring limiting unit in one embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the working process of the anchor bolt support mechanism in one embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures: 1-Tunnel roof, 2-Traditional anchor drilling rig, 3-Traditional temporary support unit, 4-Sewage and coal dust mixture, 5-Support beam, 6-Support rod, 7-Stress sensor, 8-Slip ring limiting unit, 9-Slip ring, 10-Anchor drilling rig, 11-Limiting ring, 12-Auxiliary support beam, 14-Support plate, 15-Support seat, 16-Inner bearing chain, 17-Outer bearing chain, 18-Push rod, 19-Frame, 20-Drill box, 21-Slide, 22-Ear seat, 23-Slide feed cylinder, 24-Guide rail, 25-Electromagnet, 26-Frame support beam, 27-Elastic element, 28-Limiting block. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0028] The following is combined Figures 2 to 5 This describes an anchor bolt support mechanism according to an embodiment of the present invention.

[0029] Combination Figure 2 and Figure 3 As shown, the anchor bolt support mechanism according to an embodiment of the present invention includes: multiple support beams 5, multiple support rods 6, slip rings 9, anchor bolt drilling rig 10, slip ring pushing unit, and multiple support plates 14.

[0030] The anchor drilling rig 10 is equipped with a support base 15 at its top. Multiple support beams 5 are arranged circumferentially along the top of the anchor drilling rig 10, and the first end of each support beam 5 is hinged to the support base 15. The number of support beams 5 is set according to actual needs and is not limited. Support plates 14 are located between adjacent support beams 5. The material of the support plates 14 can be polyurethane, which has strong impact resistance, small deformation under heavy load, and can reliably protect the anchor drilling rig 10 below and the safety of the operators. Slip rings 9 are fitted around the outer periphery of the anchor drilling rig 10. Multiple support rods 6 are respectively hinged to the corresponding support beams 5 and slip rings 9. A slip ring pushing unit is installed on the anchor drilling rig 10 and is used to drive the slip rings 9 to move along the axial direction of the anchor drilling rig 10, so that the support beams 5 unfold to form a temporary support surface covering the anchor support operation area of ​​the roadway roof 1, that is, the support beams 5 and the support plates 14 support and press the roadway roof to form a temporary support section. The slip ring pushing unit can be driven by various types of drive mechanisms, such as hydraulic cylinders and pneumatic cylinders.

[0031] The working process of the anchor bolt support mechanism in this embodiment of the invention is as follows: In the initial state, the slip ring 9 is located at the lower part of the outer periphery of the anchor bolt drilling rig 10. The support beam 5 is pressed against the support rod 6 under its own weight, and the support rod 6 is pressed against the outer periphery of the anchor bolt drilling rig 10. The support rod 6 and the slip ring 9 maintain the initial angle in the direction of movement and are in a retracted state. When the anchor bolt support process is started, the slip ring pushing unit moves upward, pushing the slip ring 9 to rise along the axial direction of the anchor bolt drilling rig 10. The slip ring 9 drives the support rod 6 to rise, and the support rod 6 drives the support beam 5 to unfold outward. The support plate 14 unfolds and presses against the roadway roof to form a temporary support surface. The anchor bolt drilling rig 10 performs the anchor bolt installation operation. After the anchor bolt installation is completed, the slip ring pushing unit moves to the low position, the slip ring 9 descends, and the inner wall of the slip ring 9 elastically contacts the anchor bolt drilling machine 10. The slip ring 9 descends at a constant speed under the action of friction, causing the support rod 6 to descend and retract. The support beam 5 swings and retracts towards the axis of the anchor bolt drilling machine 10. Under its own weight, the support beam 5 presses against the support rod 6, and the support rod 6 presses against the outer periphery of the anchor bolt drilling machine 10. The entire anchor bolt support mechanism returns to the initial retracted state, waiting for the anchor bolt drilling machine 10 to move and reposition, install the next anchor bolt, and execute the next linkage cycle of anchoring and temporary support.

[0032] According to embodiments of the present invention, the anchor bolt support mechanism integrates the support beam, support rod, support plate, slip ring, and slip ring pushing unit onto the anchor bolt drilling rig. This allows the support to be installed wherever the anchor bolt is being constructed, effectively avoiding the dangers of roof falls and mud and water hazards to miners caused by positional deviations between the support and the anchor bolt construction area. It also effectively prevents water and dust from entering the moving parts, control components, and hydraulic control valves of the anchor bolt drilling rig, thus significantly improving the reliability of the anchor bolt support mechanism.

[0033] In some embodiments, such as Figure 3 As shown, the anchor bolt support mechanism also includes multiple auxiliary support beams 12, inner load-bearing chains 16, and outer load-bearing chains 17. The auxiliary support beams 12 are arranged circumferentially along the anchor bolt drilling rig 10, and the first end of each auxiliary support beam 12 is hinged to the support base 15. The auxiliary support beams 12 and the support beam 5 are arranged alternately in the circumferential direction. The inner load-bearing chains 16 are hinged to the middle of the support beam 5 and the auxiliary support beams 12, respectively. The outer load-bearing chains 17 are hinged to the ends of the support beam 5 and the auxiliary support beams 12, respectively.

[0034] The number of auxiliary support beams 12 and support beams 5 is set according to actual needs and is not limited. In one example, there are four auxiliary support beams 12 and four support beams 5. The inner load-bearing chain 16 and the outer load-bearing chain 17 are both made of high-strength, high-toughness alloy materials, which are lightweight and high-strength. The anchor bolt support mechanism in this embodiment can automatically change its posture according to the anchor bolt support cycle. When the anchor bolt support is being constructed, the support beams 5 and support plates 14 are raised to protect the safety of the operators and equipment below. When the anchor bolt support is completed, the support beams 5 and support plates 14 are retracted to make room for the drilling rig to move. This is suitable for the narrow conditions of coal mine roadways and therefore has high practicality.

[0035] This embodiment of the anchor bolt support mechanism also provides an automatic mesh laying function. The mesh is placed on the upper part of the anchor bolt support mechanism, supported by the support beam 5 and the support plate 14, which can support the mesh. Underground anchor bolt support requires continuously unfolding the wire mesh and pressing it tightly against the roadway roof. Steel strips are then installed under the mesh before drilling and anchor bolt installation. Traditional anchor bolt support requires manual assistance in laying the mesh, which is physically demanding for miners. However, the anchor bolt support mechanism of this embodiment can reliably lift the mesh to the roadway roof, realizing an automatic mesh laying function. This can significantly reduce the labor intensity of miners, improve the efficiency of underground anchor bolt support, and alleviate the imbalance between mining and tunneling. The temporary support unit is designed as a lightweight rigid-flexible coupling mechanism. Compared with traditional steel plate and slide rail lifting supports, it is lighter and reduces the frame weight of the anchor bolt drilling rig, making it more adaptable to soft roadway floors.

[0036] In some embodiments, combined with Figure 2 and Figure 4As shown, the anchor drilling rig 10 is equipped with a drill box 20, a slide 21, a lug 22, a slide feed cylinder 23, and a guide rail 24. The slip ring pushing unit includes a push rod 18 and a frame 19. The frame 19 is mounted on the anchor drilling rig 10. The slip ring 9 is sleeved on the periphery of the frame 19 and can slide along its axial direction. The slide 21 is located inside the frame 19 and forms a sliding pair with the frame 19 through the guide rail 24. The slide 21 includes four parallel guide columns and a slide top plate and a slide bottom plate respectively connected to both ends of the guide columns. The drill box 20 is mounted inside the slide 21 by a chain and is used to perform drilling operations. The guide rail 24 is fixed to the frame 19, and the guide columns and the guide rail 24 form a sliding pair that engages with the hole shaft, allowing the slide 21 to reciprocate along the drilling direction. The cylinder end of the slide feed cylinder 23 is connected to the frame 19 via the lug 22, and the piston rod end of the slide feed cylinder 23 is connected to the top plate of the slide. The root of the push rod 18 is fixedly installed on the outer bottom of the slide 21 and is used to push the lower end face of the slip ring 9.

[0037] The drill box 20 is a transmission device that drives the drill rod to rotate for drilling operations. Multiple support lugs are provided on the outer wall of the slip ring 9, which can be welded or integrally formed. The end of the support rod 6 is hinged to the support lug via a pin. In one example, there are two push rods 18, arranged symmetrically at 180 degrees around the circumference of the anchor bolt drilling rig 10, ensuring balanced force on the slip ring 9 during axial movement and preventing jamming. However, even with two push rods driving the slip ring 9 upwards, uneven friction between the slip ring 9 and the frame 19 due to manufacturing errors in the push rods 18, frame 19, and slip ring 9 can still lead to jamming. Therefore, in one example, the anchor bolt support mechanism also includes a micro-strain sensor, a measurement and control system, and a main control system. The micro-strain sensor is located at the top of the push rod 18 to detect the pressure exerted by the push rod 18 on the slip ring 9. The micro-strain sensor is connected to the input of the measurement and control system, which is communicatively coupled to the main control system. The top of push rod 18 senses the resistance of slip ring 9, generating micro-strain. When the micro-strain at a single end of either push rod 18 exceeds the alarm value, or the difference in micro-strain between the ends of either push rod 18 exceeds the alarm value, the measurement and control system triggers an alarm based on the abnormal micro-strain collected by the micro-strain sensor. An abnormal command is then sent to the main control system via wireless communication. The main control system sends a stop command to the hydraulic control valve in the anchor drilling rig 10, and the slide 21 stops feeding. In summary, the anchor support mechanism of this embodiment has high practicality.

[0038] In addition, the outer wall of the frame 19 is covered with elastic rubber material, and the slip ring 9 is in elastic contact with the outer wall of the frame 19. The slip ring 9 is subjected to elastic deformation resistance and frictional resistance, and can fall smoothly along the outer wall of the frame 19. This can effectively prevent the temporary support from falling back quickly under the action of gravity acceleration, generating inertial impact, and improving the reliability of the work.

[0039] Combination Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the anchor bolt support mechanism further includes a slip ring limiting unit 8, which is mounted on the frame 19. When the slip ring 9 moves to a preset height, the slip ring limiting unit 8 automatically extends radially outward and abuts against the lower end face of the slip ring 9, preventing the slip ring 9 from sliding axially. This restricts the falling of the support rod 6, support beam 5, and support plate 14. Radial refers to the radial direction of the frame 19. During the anchor bolt support operation, the support beam 5 and support plate 14 support the roadway roof at the top of the anchor bolt drilling rig, ensuring the smooth implementation of the anchor drilling operation and protecting the safety of the anchor bolt machine operator and the drilling rig. In one example, the slip ring limiting unit 8 includes an electromagnet 25, a frame support beam 26, an elastic element 27, and a limiting block 28. The frame support beam 26 has radial mounting holes inside, and the electromagnet 25, elastic element 27, and limiting block 28 are arranged sequentially in the mounting holes, arranged radially from the inside to the outside. The elastic element 27 is connected to the limiting block 28 at one end near the outer side of the anchor bolt drill 10. In this example, when the electromagnet 25 is energized, the limiting block 28 is in a retracted state; when the electromagnet 25 is de-energized, the limiting block 28 switches to an extended state under the action of the elastic element. In one example, the limiting block 28 has a guide surface at one radially outward end, which gradually converges inward from top to bottom along the vertical direction. Thus, during the upward movement, the slip ring 9 can push the limiting block 28 to overcome the elastic force of the elastic element 27 and retract inward, thereby smoothly passing through the limiting position. This avoids a complicated control system and improves the reliability of the anchor bolt support mechanism.

[0040] like Figure 1 As shown, in some embodiments, the anchor bolt support mechanism further includes a limiting ring 11 and a stress sensor 7. The limiting ring 11 is mounted on the frame 19, located above the slip ring 9. The limiting ring 11 is used to limit the angle of the support rod 6, preventing the support rod 6 from moving to a dead position. Therefore, the anchor bolt support mechanism of this embodiment has high practicality. The stress sensor 7 is located on the limiting ring 11 and is connected to the measurement and control system. It is used to detect the pressure of the support rod 6 on the limiting ring 11. When the pressure exceeds a preset value, the electromagnet 25 is de-energized, and the limiting block 28 extends and resets under the action of the elastic element 27.

[0041] like Figure 6As shown, the working process of the anchor bolt support mechanism in this embodiment is as follows: The piston rod of the slide feed cylinder 23 extends, driving the slide 21 to move upward along the axis of the guide rail 24, which in turn drives the push rod 18 to move upward. The upper surfaces of the two push rods 18 contact the lower surface of the slip ring 9. The piston rod of the slide feed cylinder 23 continues to extend, and the push rod 18 drives the slip ring 9 to rise. When the slip ring 9 moves to the predetermined height position, the support beam 5 and the support plate 14 are fully extended and contact the roadway roof. The limit block 28 automatically extends to prevent the slip ring 9 from falling, thereby restricting the support rod 6, the support beam 5, and the support plate 14 from falling. The anchor bolt drilling machine 10 drills a hole. After the anchor bolt drilling machine 10 finishes drilling, the piston rod of the slide feed cylinder 23 retracts, the slide 21 falls, driving the push rod 18 to fall, and the push rod 18 disengages from the slip ring 9. The limit block 28 prevents the slip ring 9 from falling. The anchor bolt drilling machine 10 implements the anchor bolt installation and fastening process. After one anchor bolt is installed, the main control system sends a command, energizing electromagnet 25, compressing elastic element 27, retracting limit block 28, and causing slip ring 9 to move smoothly downwards under the influence of gravity and sliding resistance. When support rod 6 falls to fit against limit ring 11, the temporary support is fully retracted, and slip ring 9 stops falling. After stress sensor 7 detects the pressure of support rod 6 on limit ring 11, the main control system sends a command, de-energizing electromagnet 25, causing elastic element 27 to extend naturally, and limit block 28 to extend. The system then awaits the next anchoring and temporary support linkage cycle.

[0042] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this invention, the terms "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An anchor bolt support mechanism, characterized in that, include: The system comprises multiple support beams (5), multiple support rods (6), a slip ring (9), an anchor drilling rig (10), a slip ring pushing unit, and multiple support plates (14); the anchor drilling rig (10) is equipped with a support seat (15) at its top; the multiple support beams (5) are arranged circumferentially along the top of the anchor drilling rig (10), and the head end of each support beam (5) is hinged to the support seat (15); the support plates (14) are located between adjacent support beams (5); the slip ring (9) The multiple support rods (6) are respectively hinged to the corresponding support beam (5) and the slip ring (9); the slip ring pushing unit is installed on the anchor drilling machine (10) to drive the slip ring (9) to move upward along the axis of the anchor drilling machine (10), so that the support beam (5) unfolds and presses the roadway roof (1) to form a temporary support surface covering the anchor support operation area of ​​the anchor drilling machine (10).

2. The anchor bolt support mechanism according to claim 1, characterized in that, It also includes multiple auxiliary support beams (12), inner bearing chains (16) and outer bearing chains (17). The auxiliary support beams (12) are arranged circumferentially along the top of the anchor drilling rig (10), and the first end of each auxiliary support beam (12) is hinged to the support base (15). The auxiliary support beams (12) and the support beams (5) are arranged alternately in the circumferential direction. The inner bearing chains (16) are respectively hinged to the middle of the support beams (5) and the auxiliary support beams (12). The outer bearing chains (17) are respectively hinged to the ends of the support beams (5) and the auxiliary support beams (12).

3. The anchor bolt support mechanism according to claim 1, characterized in that, The anchor drilling rig (10) is equipped with a drill box (20), a slide (21), a lug (22), a slide feed cylinder (23), and a guide rail (24); the slip ring pushing unit includes a push rod (18) and a frame (19); The frame (19) is installed on the anchor drilling rig (10); the slip ring (9) is sleeved on the periphery of the frame (19) and can slide along its axial direction; the slide (21) is located inside the frame (19), and the slide (21) includes four parallel guide columns and a slide top plate and a slide bottom plate respectively connected to both ends of the guide columns; the drill box (20) is installed inside the slide (21) by a chain and is used to perform drilling operations; the guide rail (24) is fixed. Fixed on the frame (19), the guide post and the guide rail (24) form a moving pair with hole-shaft cooperation, so that the slide (21) can move up and down in the drilling direction; the cylinder end of the slide feed cylinder (23) is connected to the frame (19) through the lug (22), and the piston rod end of the slide feed cylinder (23) is connected to the top plate of the slide; the push rod (18) is connected to the outside of the slide (21) and is used to push the lower end face of the slip ring (9).

4. The anchor bolt support mechanism according to claim 3, characterized in that, The number of push rods (18) is 2, and they are arranged symmetrically at 180 degrees along the circumference of the anchor drilling machine (10).

5. The anchor bolt support mechanism according to claim 3, characterized in that, It also includes a micro-strain sensor, which is located at the top of the push rod (18) and is used to detect the pressure exerted by the push rod (18) on the slip ring (9) to provide overload safety protection.

6. The anchor bolt support mechanism according to claim 3, characterized in that, It also includes a limiting ring (11), which is mounted on the frame (19) and located above the slip ring (9).

7. The anchor bolt support mechanism according to claim 6, characterized in that, It also includes a slip ring limiting unit (8), which is located on the frame (19). When the slip ring (9) moves to a preset height, the slip ring limiting unit (8) automatically extends outward radially and abuts against the lower end face of the slip ring (9) to prevent the slip ring (9) from sliding down axially.

8. The anchor bolt support mechanism according to claim 7, characterized in that, The slip ring limiting unit (8) includes an electromagnet (25), a frame support beam (26), an elastic element (27), and a limiting block (28). The frame support beam (26) is provided with radial mounting holes. The electromagnet (25), the elastic element (27), and the limiting block (28) are arranged in sequence in the mounting holes, arranged radially from the inside to the outside. The elastic element (27) is connected to the limiting block (28) at one end near the radial outer side of the anchor drilling machine (10).

9. The anchor bolt support mechanism according to claim 8, characterized in that, The limiting block (28) has a guide surface at one end in the radial direction, and the guide surface gradually converges inward from top to bottom in the vertical direction.

10. The anchor bolt support mechanism according to claim 9, characterized in that, It also includes a stress sensor (7), which is installed on the limiting ring (11) to detect the pressure of the support rod (6) on the limiting ring (11). When the pressure exceeds the preset value, the electromagnet (25) is de-energized and the limiting block (28) extends under the action of the elastic element (27).

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