Three-arm top anchor rod synchronous drilling machine for driving and anchoring machine

Abstract

The utility model discloses a three-arm top anchor rod synchronous drilling machine for an anchor driving machine. The three-arm top anchor rod synchronous drilling machine comprises an anchor rod drilling machine part and a telescopic arm group, wherein the anchor rod drilling machine part consists of three anchor rod drilling machines which are arranged side by side; a rotary sliding seat set of the jumbolter portion is installed at the extending end of a telescopic arm set through a hydraulic swing oil cylinder, a sliding frame set is arranged on the rotary sliding seat set through a left speed multiplication mechanism and a right speed multiplication mechanism, a lifting frame set is fixed to the sliding frame set, and a lifting sliding frame set is arranged on the lifting frame set through a lifting speed multiplication mechanism. The right jumbolter, the left jumbolter and the middle jumbolter are arranged on the lifting sliding frame set side by side and can all achieve front-back and left-right angle adjustment. When needing anchor rods, the three-top anchor rod drilling machine slides to the head of a driving anchor machine, rotates by 90 degrees, synchronously slides, synchronously rotates and synchronously lifts, the top anchor rods can be completely supported in the shortest time, the hollow top tunneling time is greatly shortened, and the safety of head-on workers is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine roadway excavation and support equipment, and in particular to a three-arm top anchor bolt synchronous drilling rig for a roadheader. Background Technology

[0002] In the field of coal mine roadway excavation and support, the imbalance between excavation and support remains the most prominent problem. Currently, methods for solving this imbalance fall into two main categories: simultaneous excavation and support operations, and excavation followed by support. The simultaneous excavation and support operation, using integrated tunneling and anchoring machines (such as the Sandvik MB670), is very expensive and unsuitable for use in geologically challenging surrounding rock conditions, failing to address the mining-excavation imbalance problem in approximately 90% of China's coal mines. While there are many methods for excavating roadways before support, such as the combination of a tunneling machine and a mining pneumatic bolting rig; the combination of a tunneling machine and a mining two-arm bolting rig; the combination of a continuous miner and a mining bolting rig; and the combination of a rear-mounted tunneling and anchoring machine with various additional bolt and cable installation equipment, all suffer from problems such as long periods of unsupported roof time, low support efficiency, and insufficient safety.

[0003] Currently, there are roadheader-anchor-jacking (BAR) products that combine roadheaders and anchor bolting rigs. However, due to limitations in product functionality, tunnel space, and product structure, there is currently no multi-anchor bolting rig that can better coordinate with the cutting section of a BAR. This application aims to develop a multi-anchor bolting rig that can better coordinate with the cutting section of a BAR, enabling simultaneous operation of a three-arm top anchor bolting rig for synchronous support. This improves the efficiency of top anchor bolting support, shortens the time spent without top support during tunneling, and solves the problems of high labor intensity for workers, low efficiency of top anchor bolting support, and poor personnel safety. It also provides favorable conditions for integrated top anchor bolting BAR. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a three-arm top anchor bolt synchronous drilling rig for a tunneling and anchoring machine, which enables the three-arm top anchor bolt drilling rig to operate synchronously for support, improves the efficiency of top anchor bolt support, and shortens the time of tunneling without top support. This solves the problems of high labor intensity for workers, low efficiency of top anchor bolt support, and poor personnel safety, and provides favorable conditions for integrated top anchor bolt tunneling and anchoring machines.

[0005] To solve the above-mentioned technical problems, this utility model provides a three-arm top anchor bolt synchronous drilling rig for a roadheader, including an anchor bolt drilling unit composed of three anchor bolt drilling rigs arranged side by side and a telescopic boom assembly that drives the anchor bolt drilling unit to slide. The anchor bolt drilling unit is mounted on the roadheader body through the telescopic boom assembly and can slide along the front-back direction of the roadheader under the extension and retraction of the telescopic boom assembly.

[0006] The anchor drilling rig includes a rotary sliding seat assembly, a sliding frame assembly, a lifting frame assembly, a lifting slide assembly, a right anchor drilling rig, a left anchor drilling rig, and a middle anchor drilling rig. The rotary sliding seat assembly is mounted on the extended end of the telescopic boom assembly via a hydraulic swing cylinder located at its lower part. The sliding frame assembly is mounted on the rotary sliding seat assembly via a left and right speed-multiplying mechanism. The lifting frame assembly is fixed to the sliding frame assembly. The lifting slide assembly is mounted on the lifting frame assembly and moves up and down via a speed-multiplying mechanism. The right and left anchor drilling rigs are rotatably mounted at the left and right ends of the lifting slide assembly via the right and left swing seat assemblies, respectively. The intermediate anchor drilling rig is rotatably positioned in the middle of the lifting slide assembly. The right, left, and intermediate anchor drilling rigs are all adjusted in angle by left and right swing cylinders and front and rear swing cylinders. When the rotary sliding seat assembly moves to the face of the tunneling and anchoring machine under the extension of the telescopic boom assembly, it rotates under the swing action of the hydraulic swing cylinder, making the right, left, and intermediate anchor drilling rigs flush with the face of the tunneling and anchoring machine. It is then raised under the action of the lifting speed multiplier mechanism and, under the action of the left and right swing cylinders and front and rear swing cylinders, quickly performs three-arm synchronous anchor bolting operation on the hole.

[0007] In a further improvement, the telescopic boom assembly includes a slide rail assembly, a fixed plate, an outer sleeve of the boom, an inner sleeve of the boom, a first-stage boom telescopic cylinder, and a second-stage boom telescopic cylinder. The slide rail assembly is installed on the traveling part of the tunneling and anchoring machine. The outer sleeve of the boom is slidably installed on the slide rail assembly through the fixed plate, and the outer sleeve of the boom slides back and forth along the slide rail assembly under the action of the first-stage boom telescopic cylinder. The inner sleeve of the boom is located inside the outer sleeve of the boom and achieves two-stage forward and backward sliding under the action of the second-stage boom telescopic cylinder. The hydraulic swing cylinder is fixed to the extended end of the inner sleeve of the boom.

[0008] In a further improvement, an adjusting pressure plate assembly is installed between the outer sleeve of the top boom and the inner sleeve of the top boom, which is used to adjust the gap between the outer sleeve of the top boom and the inner sleeve of the top boom.

[0009] In a further improvement, each of the right, left, and middle anchor drilling rigs is equipped with a vertically positioned top anchor operating platform for controlling the precise hole-finding operation of the corresponding drilling rig.

[0010] As a further improvement, the top anchor bolt operating platform structures on the right and left anchor bolt drilling rigs are symmetrically arranged and are both located on the inner side of the corresponding drilling rigs.

[0011] As a further improvement, an emergency stop button is provided on the upper part of the top anchor bolt operating platform, and an emergency stop cover is provided on the outer periphery of the emergency stop button.

[0012] Further improvements include a control panel assembly for controlling the operation of the bolt drilling unit and the telescopic boom assembly.

[0013] In a further improvement, the distances between each pair of the right anchor drilling rig, the left anchor drilling rig, and the middle anchor drilling rig are equal, with an interval of 800-1000mm.

[0014] With this design, the present invention has at least the following advantages:

[0015] 1. This utility model relates to a three-arm top anchor bolt synchronous drilling rig for roadheaders. Through the arrangement of the anchor bolt drilling unit and the telescopic boom assembly, the three top anchor bolt drilling rigs can slide to the roadheader face and rotate 90 degrees when anchor bolts are needed. They slide, rotate, and lift synchronously, achieving synchronous top anchor bolt operation with evenly distributed bolts at the face. The anchor bolts and anchor cables at the face are supported row by row, achieving the effect of digging one bolt for every two bolts dug. It can achieve full support of the top anchor bolts in the shortest time, greatly shortening the time of empty roof during tunneling, ensuring the safety of the face workers in the shortest time, and meeting the construction requirements of large roadways.

[0016] 2. The three top anchor bolt drilling rigs, with their reasonable spacing, can meet the spacing requirements of over 90% of roadway anchor bolt support. Furthermore, by adjusting the front, back, left, and right angles, the drilling rigs can be simultaneously aligned and completed in one step, improving the efficiency of top anchor bolt support.

[0017] 3. Each top-anchor drilling rig features a compact top-anchor operating platform with an emergency stop button to maximize operator safety. The design incorporates mechanisms to prevent accidental handle activation and a locking mechanism for the operating handle when not in use, enhancing safety and reliability. Furthermore, the top-anchor operating platforms on the right and left anchor drilling rigs are symmetrically positioned and located on the inner side of their respective rigs for ease of operation, providing favorable conditions for the integrated and compact design of the anchor drilling rig. Attached Figure Description

[0018] The above is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, the following describes this utility model in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the three-arm top anchor bolt synchronous drilling rig of this utility model.

[0020] Figure 2 , 3 Figures 4 and 5 are front view, right view, and rear view schematic diagrams of the anchor drilling rig section in the three-arm top anchor synchronous drilling rig of this utility model.

[0021] Figure 5This is a schematic diagram of the drilling rig lifting mechanism of the anchor drilling rig section in the three-arm top anchor bolt synchronous drilling rig of this utility model.

[0022] Figure 6 , 7 These are, respectively, front and side views of the structure of the top anchor bolt operating platform of the three-arm top anchor bolt synchronous drilling rig of this utility model.

[0023] Figure 8 , 9 These are front and top views of the telescopic boom assembly in the three-arm top anchor bolt synchronous drilling rig of this utility model.

[0024] Figure 10 This is a top view schematic diagram of the structure of the present invention, in which two three-arm top anchor bolt synchronous drilling rigs are installed on a tunneling and anchoring machine.

[0025] Figure 11 This is a top view schematic diagram of the two three-arm top anchor bolt synchronous drilling rigs of this utility model being used in the process of deploying the anchor drilling rig.

[0026] The above figures include the following reference numerals:

[0027] 1. Telescopic boom assembly; 2. Anchor drilling rig unit; 3. Control panel assembly; 10. Tunneling and anchoring machine body unit;

[0028] 2-1 Top Anchor Bolt Operating Platform, 2-2 Emergency Stop Button, 2-3 Emergency Stop Cover, 2-5 Left Anchor Bolt Drilling Rig, 2-6 Lifting Speed-Multiplying Mechanism, 2-8 Right Swing Seat Assembly, 2-10 Sliding Frame Assembly, 2-11 Lifting Frame Assembly, 2-12 Lifting Sliding Frame Assembly, 2-14 Left Swing Seat Assembly, 2-16 Left and Right Speed-Multiplying Mechanism, 2-17 Hydraulic Swing Cylinder, 2-18 Rotary Sliding Seat Assembly, 2-19 Right Anchor Bolt Drilling Rig, 2-20. Middle Anchor Bolt Drilling Rig;

[0029] 1-1. Right telescopic cylinder mounting base; 1-2. First-stage telescopic cylinder of the boom; 1-3. Right boom cylinder mounting base; 1-4. Slide rail assembly; 1-5. Second-stage telescopic cylinder of the boom; 1-6. Outer sleeve of the boom; 1-7. Inner sleeve of the boom; 1-8. Adjusting pressure plate assembly; 1-9. Fixing plate. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] In this utility model, unless otherwise stated, directional terms such as "front, back, left, right, upper, lower" are generally used in relation to the directions indicated in the drawings, or in relation to the vertical, perpendicular, or gravitational directions of the components themselves; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] In order to shorten the time of unsupported roof at the tunnel face and maximize the safety of personnel at the face and the efficiency of anchor bolt support, this embodiment provides a three-arm top anchor bolt synchronous drilling rig for roadheaders.

[0034] Reference Figure 1 As shown, the three-arm top anchor bolt synchronous drilling rig in this embodiment can be used on the main body of the tunneling and anchoring machine to provide synchronous top anchor bolt drilling for the anchoring state of the tunneling and anchoring machine.

[0035] This embodiment of the three-arm top anchor bolt synchronous drilling rig includes an anchor bolt drilling unit 2 consisting of three anchor bolt drilling rigs arranged side by side, and a telescopic boom assembly 1 that drives the anchor bolt drilling unit to slide. The anchor bolt drilling unit 2 is mounted on the main body 10 of the tunneling and anchoring machine via the telescopic boom assembly 1, and can slide along the front-to-back direction of the tunneling and anchoring machine under the extension and retraction of the telescopic boom assembly 1.

[0036] For details, please refer to the appendix. Figure 2 , 3As shown in Figure 4, the anchor drilling rig 2 includes: a rotary sliding seat assembly 2-18, a sliding frame assembly 2-10, a lifting frame assembly 2-11, a lifting sliding frame assembly 2-12, a right anchor drilling rig 2-19, a left anchor drilling rig 2-5, and a middle anchor drilling rig 2-20. The rotary sliding seat assembly 2-18 is mounted on the extended end of the telescopic boom assembly 1 via a hydraulic swing cylinder 2-17 located at its lower part. The sliding frame assembly 2-10 is mounted on the rotary sliding seat assembly 2-18 via a left and right speed multiplier mechanism 2-16. The lifting frame assembly 2-11 is fixed on the sliding frame assembly 2-10. The lifting sliding frame assembly 2-12 is mounted on the lifting frame assembly 2-11 and moves up and down via a speed multiplier mechanism 2-6. The right anchor drilling rig 2-19 and the left anchor drilling rig 2-5 are rotatably mounted at the left and right ends of the lifting slide assembly 2-12 via the right swing seat assembly 2-8 and the left swing seat assembly 2-14, respectively. The middle anchor drilling rig 2-20 is rotatably mounted in the middle position of the lifting slide assembly 2-12. The right anchor drilling rig 2-19, the left anchor drilling rig 2-5, and the middle anchor drilling rig 2-20 are all adjusted in left, right, and forward / backward angles via the left and right swing cylinders 2-9 and the front and rear swing cylinders 2-7. When the rotary sliding seat assembly 2-18 moves to the face position of the anchor boring machine under the extension of the telescopic boom assembly 1, it rotates under the swing action of the hydraulic swing cylinder 2-17, making the right anchor drilling rig 2-19, the left anchor drilling rig 2-5, and the middle anchor drilling rig 2-20 flush with the face working surface. They are then raised under the action of the lifting speed multiplier mechanism 2-6, as shown in the attached diagram. Figure 5 As shown, under the action of the left and right swing cylinders and the front and rear swing cylinders, the anchor bolt operation is quickly and synchronously performed on the hole.

[0037] In this embodiment, each of the right anchor drilling rig 2-19, the left anchor drilling rig 2-5, and the middle anchor drilling rig 2-20 is equipped with a vertically arranged top anchor operating platform 2-1 for controlling the precise hole-finding operation of the corresponding drilling rig. (See attached diagram.) Figure 6 , 7As shown, the top anchor bolt operating platform 2-1 includes a conical handle top cap operating workbench 2-1-1, top anchor stop bar two 2-1-2, top anchor stop bar one 2-1-3, anchor bolt cover 2-1-4, automatic drilling switch sign 2-1-5, high-pressure ball valve 2-1-6, top anchor valve frame 2-1-7, six-way valve 2-1-8, handle limit plate 2-1-9, sign connecting seat 2-1-10, pressure gauge 2-1-11, automatic drilling valve group 2-1-12, flow valve 2-1-13, and other main components. Furthermore, the top anchor bolt operating platform 2-1 is equipped with an emergency stop button 2-2 at its upper part, and an emergency stop cover 2-3 is provided around the emergency stop button 2-2. Through the compact arrangement of the components described above, the anchor drilling rig is integrated with the six-way valve, automatic drilling valve group, emergency stop button, flow valve, water circuit operating valve block, pressure gauge, operating handle to prevent accidental contact, operating indicator switching sign, hydraulic joints and hose routing and reserved space for hose routing. It is fully functional, compact in structure, and the semi-enclosed protective cover structure is easy to disassemble and maintain, saving a lot of space and making the key components reasonably arranged, ready for use.

[0038] In this embodiment, the top anchor bolt operating platform 2-1 structures installed on the right anchor bolt drilling rig 2-19 and the left anchor bolt drilling rig 2-5 are symmetrically arranged, as shown in the attached figure. Figure 4 and 5 As shown, they are all located on the inside of the corresponding drilling rig, which facilitates operation and reduces the overall width of the drilling rig.

[0039] See attached document Figure 8 , 9 As shown, the telescopic boom assembly 1 includes: telescopic cylinder fixing seat 1-1, first-stage telescopic cylinder of the boom 1-2, boom cylinder fixing seat 1-3, slide rail assembly 1-4, second-stage telescopic cylinder of the boom 1-5, outer sleeve of the boom 1-6, inner sleeve of the boom 1-7, adjusting pressure plate assembly 1-8, fixing plate 1-9, etc. The slide rail assembly 1-4 is installed above the traveling section of the tunneling and anchoring machine. A slidable fixing plate 1-9 is installed on the slide rail assembly 1-4. The boom outer sleeve 1-6 is installed above the fixing plate 1-9. The boom inner sleeve 1-7 is installed inside the boom outer sleeve 1-6. The boom secondary telescopic cylinder 1-5 is installed inside the boom inner sleeve 1-7. One end of the boom secondary telescopic cylinder 1-5 is installed on the boom outer sleeve 1-6, and the other end is installed on the boom inner sleeve 1-7. The boom inner sleeve 1-7 can perform two-stage telescopic movement. One end of the boom primary telescopic cylinder 1-2 is fixed to the telescopic cylinder fixing seat 1-1, and the other end is fixed to the boom cylinder fixing seat 1-3, realizing primary sliding.

[0040] An adjusting pressure plate assembly 1-8 is installed on the outside of the top boom outer sleeve 1-6. The gap between the top boom outer sleeve 1-6 and the top boom inner sleeve 1-7 is adjusted by the adjusting pressure plate assembly 1-8, so that the telescopic boom assembly 1 operates more smoothly and safely.

[0041] In this embodiment, during top anchor bolt support, the right anchor bolt drilling rig 2-19, the left anchor bolt drilling rig 2-5, and the middle anchor bolt drilling rig 2-20 are arranged side by side with equal distances between each pair, and the interval distance is 800-1000mm (approximately 90% of roadway anchor bolt spacing is 800mm, 900mm, or 1000mm). If the spacing of each top anchor bolt drilling rig is set to be consistent with the spacing specified in the coal mine support process, during construction, the anchor bolt drilling rigs can be synchronously aligned and drilled in one step, achieving synchronous automatic drilling operation of the three drilling rigs. Furthermore, one person can operate them independently. The cyclical operation during tunneling greatly improves the support efficiency of the face anchor bolts and cables, significantly shortens the time spent without a roof, and effectively improves the safety of workers at the underground tunneling face.

[0042] When using the three-arm top anchor bolt synchronous drilling rig of this embodiment in a roadheader, the three-arm top anchor bolt synchronous drilling rig can be placed in the middle of the roadheader. More preferably, two three-arm top anchor bolt synchronous drilling rigs are arranged symmetrically, one on the left and one on the right side of the roadheader, forming a six-arm top anchor bolt roadheader. In use, the two anchor bolt drilling rigs can extend, rotate, and lift synchronously based on their corresponding telescopic booms, achieving synchronous support of the six-arm top anchor bolts and greatly improving the efficiency of top anchor bolt support.

[0043] Appendix Figure 10 The diagram shows a top view of the structure of two three-arm top anchor bolt synchronous drilling rigs respectively installed on the main body 10 of the tunneling and anchoring machine. Figure 11 A top view schematic diagram shows two three-arm top anchor bolt synchronous drilling rigs used for the anchor boring machine in the deployed state.

[0044] See attached document Figure 10 As shown, the three-arm top anchor bolt synchronous drilling rig in this embodiment also includes a control panel assembly 3 for controlling the operation of the anchor bolt drilling rig 2 and the telescopic boom assembly 1. The control panel assembly 3 is installed on the main body 10 of the anchor bolt drilling rig and can control the anchor bolt drilling rig 2 to achieve the functions of "one-click deployment" and "one-click retraction".

[0045] This utility model relates to a three-arm top anchor bolt synchronous drilling rig for roadheaders. It has a compact structure and reasonable layout, and can be adapted to the use of most large coal mine roadways. It greatly shortens the time of unsupported roof at the face, making roadway excavation safer and more efficient.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes or alterations made by those skilled in the art using the above-disclosed technical content shall fall within the protection scope of the present utility model.

Claims

1. A three-arm top-anchor bolt synchronous drilling rig for a roadheader, characterized in that, It includes an anchor drilling rig section (2) consisting of three anchor drilling rigs arranged side by side and a telescopic boom assembly (1) that drives the anchor drilling rig section (2) to slide. The anchor drilling rig section (2) is set on the main body section (10) of the tunneling and anchoring machine through the telescopic boom assembly (1) and can slide along the front and rear direction of the tunneling and anchoring machine under the extension and retraction action of the telescopic boom assembly (1). The anchor drilling rig (2) includes a rotary sliding seat assembly (2-18), a sliding frame assembly (2-10), a lifting frame assembly (2-11), a lifting sliding frame assembly (2-12), a right anchor drilling rig (2-19), a left anchor drilling rig (2-5), and a middle anchor drilling rig (2-20). The rotary sliding seat assembly (2-18) is mounted on the extended end of the telescopic boom assembly (1) via a hydraulic swing cylinder (2-17) located at its lower part. The sliding frame assembly (2-10) The left and right speed-multiplying mechanism (2-16) is mounted on the rotary sliding seat assembly (2-18). The lifting frame assembly (2-11) is fixed on the sliding frame assembly (2-10). The lifting slide assembly (2-12) is mounted on the lifting frame assembly (2-11) and moves up and down via the lifting speed-multiplying mechanism (2-6). The right anchor drilling rig (2-19) and the left anchor drilling rig (2-5) are respectively connected via the right swing seat assembly (2-8) and the left swing seat assembly (2-14). The rotating parts are located at the left and right ends of the lifting slide assembly (2-12), and the middle anchor drilling rig (2-20) is rotatably located in the middle position of the lifting slide assembly (2-12). The right anchor drilling rig (2-19), left anchor drilling rig (2-5), and middle anchor drilling rig (2-20) are all adjusted in left and right angles by left and right swing cylinders (2-9) and front and rear swing cylinders (2-7). The rotary sliding seat assembly (2-18) is located in the telescopic boom assembly (1). When the bolting machine moves to the face of the tunneling and anchoring machine under the extension action, it rotates under the swing action of the hydraulic swing cylinder (2-17), so that the right anchor drilling machine (2-19), the left anchor drilling machine (2-5) and the middle anchor drilling machine (2-20) are flush with the face of the tunneling and anchoring machine. Under the action of the lifting speed multiplier mechanism (2-6), it is lifted up, and under the action of the left and right swing cylinders (2-9) and the front and rear swing cylinders (2-7), it quickly realizes the three-arm synchronous bolting operation in the hole.

2. The three-arm top-anchor synchronous drilling rig for a roadheader according to claim 1, characterized in that, The telescopic boom assembly (1) includes a slide rail assembly (1-4), a fixing plate (1-9), a top boom outer sleeve (1-6), a top boom inner sleeve (1-7), a top boom primary telescopic cylinder (1-2), and a top boom secondary telescopic cylinder (1-5). The slide rail assembly (1-4) is installed on the main body (10) of the tunneling and anchoring machine. The top boom outer sleeve (1-6) is slidably installed on the slide rail assembly (1-4) through the fixing plate (1-9). Under the action of the top boom primary telescopic cylinder (1-2), the top boom outer sleeve (1-6) slides back and forth along the slide rail assembly (1-4). The top boom inner sleeve (1-7) is located inside the top boom outer sleeve (1-6) and achieves two-stage back and forth sliding under the action of the top boom secondary telescopic cylinder (1-5). The hydraulic swing cylinder (2-17) is fixed to the extended end of the top boom inner sleeve (1-7).

3. The three-arm top-anchor synchronous drilling rig for a roadheader according to claim 2, characterized in that, An adjusting pressure plate assembly (1-8) is installed between the outer sleeve (1-6) and the inner sleeve (1-7) of the top boom, for adjusting the gap between the outer sleeve (1-6) and the inner sleeve (1-7).

4. The three-arm top-anchor synchronous drilling rig for a roadheader according to any one of claims 1 to 3, characterized in that, Each of the right anchor drilling rig (2-19), left anchor drilling rig (2-5), and middle anchor drilling rig (2-20) is equipped with a vertically arranged top anchor operating platform (2-1) for controlling the precise hole finding operation of the corresponding drilling rig.

5. The three-arm top-anchor synchronous drilling rig for a roadheader according to claim 4, characterized in that, The top anchor bolt operating platform (2-1) on the right anchor bolt drilling rig (2-19) and the left anchor bolt drilling rig (2-5) are symmetrically arranged and are both located on the inner side of the corresponding drilling rig.

6. The three-arm top-anchor synchronous drilling rig for a roadheader according to claim 4, characterized in that, An emergency stop button (2-2) is provided on the upper part of the top anchor rod operating platform (2-1), and an emergency stop cover (2-3) is provided on the outer periphery of the emergency stop button (2-2).

7. The three-arm top-anchor synchronous drilling rig for a roadheader according to claim 4, characterized in that, It also includes a control panel assembly (3) for controlling the operation of the anchor drilling unit (2) and the telescopic boom assembly (1).

8. The three-arm top-anchor synchronous drilling rig for a roadheader according to claim 1, characterized in that, The distances between each pair of the right anchor drilling rig (2-19), the left anchor drilling rig (2-5), and the middle anchor drilling rig (2-20) are equal, with an interval of 800-1000mm.

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