A top-mounted high rack used in a roadway and a method of conveying equipment using the same

Abstract

The application provides a machine-top overhead road used in a roadway, which is arranged above a heading machine and used for conveying equipment to be conveyed, and comprises an overhead road long beam arranged in parallel with a roadway axis and a supporting mechanism for supporting the overhead road long beam above the heading machine. The application realizes quick, stable and safe transposition of the heading machine and the equipment to be conveyed, and significantly improves the capacity of the heading machine for the equipment to be conveyed. The application further discloses a method for conveying equipment by using the machine-top overhead road.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring equipment technology, and more particularly to an overhead conveyor system for use in tunnels, and a method for transporting equipment using such an overhead conveyor system. Background Technology

[0002] Coal mine roadway excavation is generally carried out in a single-roadway manner. Due to the limitation of the width of the tunnel boring machine's shovel, after the tunnel boring machine completes its excavation, the support equipment often cannot be cross-positioned with the tunnel boring machine to reach the newly exposed roof (working face). Therefore, under single-roadway excavation conditions, in order to complete the cross-positioning of tunneling and support equipment, some working faces increase the roadway width and use narrow-type rock bolt drilling rig tracks to pass through the tunnel boring machine; some working faces use a monorail hoist at the top of the roadway to suspend the rock bolting machine from the top of the roadway for movement; most working faces use manual carrying of single rock bolt drilling rigs, passing through the side of the tunnel boring machine to the tunneling working face for support operations. Therefore, in order to realize the conversion between the two major processes of tunneling and support at the tunneling working face, many research institutes and equipment enterprises have tried many solutions, but the results are still not ideal, making it difficult to lay a solid foundation for automation in intelligent tunneling working faces.

[0003] The three commonly used cross-positioning methods in the existing technology have common disadvantages: (1) The existing cross-positioning speed of tunneling and support equipment is slow. The crawler of the narrow anchor drilling rig travels slowly, and the uneven floor of the tunnel makes the cross-positioning time of the support equipment and the tunneling equipment too long. When the anchor bolting machine is moved by the top monorail hoist, the monorail hoist is affected by the roof conditions, making it difficult to ensure that the anchor bolting machine passes smoothly, thus reducing the moving efficiency. When the anchor bolting machine is moved by carrying it manually, not only is the labor intensity high, but the moving time is also long.

[0004] (2) The existing cross-positioning method for tunneling and support equipment has poor adaptability. The use of narrow-type anchor bolt drilling rigs with crawler tracks is limited by the conditions of the roadway floor. When the floor is muddy and broken, narrow-type anchor bolt drilling rigs often have difficulty passing through. When using a top monorail to transport anchor bolt machines, the monorail often has difficulty adapting when the roof is broken and the height fluctuates greatly. Although there is no adaptability problem with manually carrying anchor bolt machines, it is obviously not in line with the current trend of "mechanization to reduce manpower and automation to replace manpower" in my country.

[0005] (3) The existing cross-positioning method of tunneling and support equipment has a long auxiliary process time. Due to the width limitation of the whole machine, the narrow anchor bolt drilling rig is affected by the regulations for open roof operation under the newly exposed roof, and the temporary support and netting laying takes up a long auxiliary process time; when using the top monorail hoisting to move the anchor bolt machine, the top needs to construct the monorail to hoist the anchor bolt, and there are also many auxiliary processes such as hoisting the track; when using manual carrying of single anchor bolt machines, the power pipeline and other equipment must be disassembled repeatedly, which not only has a long auxiliary time, but also has poor safety.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the general background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] One objective of this invention is to provide an elevated overhead conveyor system for use in tunnels, utilizing the space above the underground tunneling machine and the tunnel roof to construct an elevated conveyor system for transporting equipment. This invention also provides a method for transporting equipment using this elevated overhead conveyor system.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An overhead conveyor for use in a tunnel, the overhead conveyor being erected above a tunneling machine for transporting equipment to be transported, the overhead conveyor comprising: a long beam of the overhead conveyor, the long beam of the overhead conveyor being arranged parallel to the tunnel axis, and a support mechanism, the support mechanism supporting the long beam of the overhead conveyor above the tunneling machine.

[0010] Furthermore, the support mechanism includes a first support mechanism and a second support mechanism, which are disposed on both sides of the center of gravity of the elevated road beam and cooperate with each other to keep the elevated road beam stably erected above the tunneling machine.

[0011] Furthermore, it also includes a third support mechanism, which is located between the first support mechanism and the second support mechanism and can support the tunneling machine.

[0012] Furthermore, it also includes a fourth support mechanism, which is located between the first and second support mechanisms and can be supported on the tunnel floor.

[0013] Furthermore, a first power unit is installed on the tunneling machine, which drives the long beam of the elevated road on the top of the machine to move back and forth.

[0014] Furthermore, the first power unit includes: a first drive unit, the output end of which is connected to a drive roller with gears, and a rack that cooperates with the drive roller is provided on the bottom surface of the elevated road beam.

[0015] Furthermore, the equipment to be transported is equipped with a second power unit, which drives the equipment to be transported to move along the long beam of the overhead road on the machine top.

[0016] Furthermore, the second power unit is a pulley mechanism installed on the equipment to be transported. The pulley mechanism includes a track, a drive wheel, a driven wheel, and a second drive device. The drive wheel and the driven wheel are respectively located at the front end and rear end of the equipment to be transported. The track surrounds the equipment to be transported and is fitted onto the drive wheel and the driven wheel. The output end of the second drive device is connected to the drive wheel. The equipment to be transported is provided with a guide block that presses the lower track onto the long beam of the elevated road.

[0017] A method for using an overhead conveyor system in any of the aforementioned roadways, comprising: using a support mechanism to support and erect an overhead beam parallel to the roadway axis above the tunneling machine; and conveying the equipment to be conveyed from above the tunneling machine to the top of the roadway across the tunneling machine for operation.

[0018] Furthermore, it also includes the forward and backward movement of the elevated road beam erected on the tunneling machine, driven by a first power unit mounted on the tunneling machine.

[0019] By adopting the above technical solution, the present invention has the following beneficial effects:

[0020] The elevated roadway installed on the top of the tunneling equipment reduces the environmental requirements such as the flatness of the tunnel roof and floor, and improves tunneling efficiency.

[0021] The structure is simple, consisting of an elevated roadway erected on a conventional tunneling machine, with the drive unit used to move the elevated roadway on top of the tunneling machine back and forth along the tunneling path.

[0022] The support structure on the elevated road ensures that it is erected above the tunneling machine, allowing the long beam of the elevated road to be separated from the tunneling machine and keeping the road surface level.

[0023] It is highly versatile and applicable to all single-lane tunneling working faces.

[0024] It enables rapid, stable, and safe repositioning of the tunneling machine and the support (or water exploration) equipment, and significantly improves the ability of the support (or water exploration) equipment to pass through the tunneling machine. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is one of the schematic diagrams showing the location of the overhead access road in this invention;

[0027] Figure 2 This is the second schematic diagram showing the location of the overhead access road in this invention;

[0028] Figure 3 This is the third schematic diagram showing the location of the overhead access road in this invention;

[0029] Figure 4 This is a schematic diagram of the structure of the overhead road under the excavator during tunneling in this invention;

[0030] Figure 5 This is a schematic diagram of the structure of the elevated roadway on the machine top in this invention after excavation;

[0031] Figure 6 For the present invention Figure 5 Side view;

[0032] Among them, 1 is the tunnel roof, 2 is the tunnel bottom, 3 is the tunneling machine, 4 is the support mechanism, 5 is the elevated road long beam, 6 is the first support mechanism, 7 is the second support mechanism, 8 is the third support mechanism, 9 is the fourth support mechanism, 10 is the belt conveyor tail, 11 is the tunneling secondary transport equipment, 12 is the support equipment, 13 is the support roller, 14 is the crossbeam, 15 is the pulley mechanism, 16 is the self-lifting device, 17 is the rack, 18 is the drive drum, 19 is the second drive device, 20 is the rotating mechanism, and 21 is the guide block. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0037] Example 1

[0038] like Figures 1-3 The diagram shown is a structural schematic of an elevated roadway used in a tunnel according to this patent. In this embodiment, "front" and "rear" are defined with reference to the tunneling direction. Facing the tunneling direction is defined as "front", and facing away from the tunneling direction is defined as "rear".

[0039] The tunneling machine 3 performs tunneling operations on the tunnel floor 2 within the tunnel. An elevated roadway is erected above the tunneling machine 3 to transport equipment to be transported, which may be anchor bolt support equipment. The elevated roadway specifically includes: a long elevated beam 5 and a support mechanism 4. The long elevated beam 5 is parallel to the tunnel axis, and the support mechanism 4 supports the long elevated beam 5 above the tunneling machine 3, while simultaneously... Figure 2 As shown, the support mechanism 4 is located in the illustrated area. Specifically, the support mechanism 4 includes a first support mechanism 6 and a second support mechanism 7. The first support mechanism 6 and the second support mechanism 7 are positioned on either side of the center of gravity of the elevated road beam 5, cooperating to ensure the stable erection of the elevated road beam 5 above the tunneling machine 3. The equipment to be transported is conveyed along the elevated road beam 5; that is, the equipment to be transported utilizes the space between the elevated road beam 5 and the roadway roof 1 to be transported from the rear of the tunneling machine 3 to the front of the tunneling machine 3. After the equipment has completed anchor bolt support work at the tunneling face, it can be transported either from the front of the tunneling machine 3 to the rear of the tunneling machine 3.

[0040] In this embodiment, the first support mechanism 6 can be supported on the bottom of the tunnel 2 or the top of the tunneling machine 3, and the second support mechanism 7 can be supported on the bottom of the tunnel 2 or the top of the tunneling machine 3. In actual use, the support position can be determined and adjusted according to the working conditions. The method for adjusting the support position can be implemented using existing technology, and will not be elaborated here.

[0041] Furthermore, combined with Figure 3 As shown in this embodiment,

[0042] The support mechanism 4 also includes a third support mechanism 8 and a fourth support mechanism 9.

[0043] The first support mechanism 6 and the second support mechanism 7 are located on either side of the center of gravity of the elevated road beam 5, working together to ensure the stable erection of the elevated road beam 5 above the tunneling machine 3. The first support mechanism 6 can be supported on the tunnel floor 2 or the top of the tunneling machine 3, and the second support mechanism 7 can also be supported on the tunnel floor 2 or the top of the tunneling machine 3. To further ensure the stability of the elevated road beam 5, a third support mechanism 8, capable of supporting the tunneling machine 3, can be installed between the first support mechanism 6 and the second support mechanism 7, thereby reducing the span of the elevated road beam 5.

[0044] In this embodiment, to further ensure the stability of the elevated road in actual operation, a fourth support mechanism 9 that can support the bottom of the tunnel 2 can be set between the first support mechanism 6 and the second support mechanism 7.

[0045] In addition, in the solution of the present invention, a third support mechanism 8 and a fourth support mechanism 9 can be provided simultaneously between the first support mechanism 6 and the second support mechanism 7 to ensure the stability of the elevated road in the space above the tunneling machine 3.

[0046] Example 2

[0047] Combination Figure 4 , Figure 5 and Figure 6 The image shows a specific embodiment of an overhead conveyor system used in a tunnel according to this patent. In this embodiment, the equipment to be transported is taken as the support equipment, namely, the integrated support and anchor machine, for detailed explanation.

[0048] In this embodiment, a detailed description is provided based on an actual working scenario. A secondary tunneling transport equipment 11 and a belt conveyor tail section 10 are installed behind the tunneling machine 3. The secondary transport equipment 11 and tail section 10 are parts of existing equipment, and their specific working principles and structures are not elaborated upon in this embodiment. The overhead road specifically includes: an overhead road long beam 5 and a support mechanism 4. The overhead road long beam 5 is positioned above the tunneling machine 3 and the secondary tunneling transport equipment 11. The overhead road long beam 5 can be formed by splicing and fixing two parallel steel sections. A first support mechanism 6 can be installed at the front end of the overhead road long beam 5, and a second support mechanism 7 can be installed at the rear end of the overhead road long beam 5. In this embodiment, the first support mechanism 6 and the second support mechanism 7 are specifically hydraulic cylinders. The first support mechanism 6 can be connected to both sides of the overhead road long beam 5 via a rotating device 20, which is specifically a rotating hydraulic cylinder or a rotating motor. The rotating device 20 can rotate the first support mechanism 6 by 90 degrees. When the first support mechanism 6 and the elevated road beam 5 are at a 90-degree angle, the piston rod of the first support mechanism 6 extends and touches the ground. In conjunction with the second support mechanism 7, it can control the height of the elevated road beam 5 and adjust the pitch angle. When the first support mechanism 6 and the elevated road beam 5 are parallel, the first support mechanism 6 is hidden on both sides of the elevated road beam 5 to avoid collision with the tunneling machine 3 during the movement of the elevated road on the machine top and causing damage.

[0049] A crossbeam 14 perpendicular to the extension direction of the elevated road beam 5 can be installed at the rear end of the elevated road beam 5, and the second support mechanism 7 is installed on the crossbeam 14. The crossbeam 14 helps to further maintain the stability of the elevated road beam 5 in the supported state.

[0050] A first power unit is provided on the tunneling machine 3. The first power unit specifically includes a first drive unit. In this embodiment, the first drive unit is specifically an electric motor. The output end of the first drive unit is connected to a drive drum 18 with a gear. The gear is located in the middle of the drive drum 18. A rack 17 is provided on the bottom surface of the elevated road beam 5. The rack 17 is arranged along the length direction of the elevated road beam 5. The rack 17 is used in conjunction with the drive drum 18. The rack 17 meshes with the gear on the drive drum 18.

[0051] The first drive device drives the drive roller 18 to rotate around its axis. The gear on the drive roller 18 drives the rack 17 to move in a straight line, thereby moving the elevated road beam 5. By controlling the forward and reverse rotation of the first drive device, the elevated road beam 5 can be controlled to move forward or backward.

[0052] Support rollers 13 are installed on the tunneling machine 3 and the secondary tunneling transport equipment 11, and the elevated roadway beam 5 is placed on the support rollers 13. The support rollers 13 support the elevated roadway beam 5 while guiding its movement. Alternatively, a lifting platform is installed on the tunneling machine 3, and the support rollers 13 on the tunneling machine 3 are mounted on the lifting platform. Alternatively, a third support mechanism 8 capable of supporting the tunneling machine 3 is installed on the elevated roadway above the machine; in this embodiment, the third support mechanism 8 can be a lifting claw. After the elevated roadway beam 5 moves backward, the first support mechanism 6 remains in a retracted state. The elevated roadway beam 5 is maintained in position by the lifting platform or the lifting claw, and by the first support mechanism 6 or the support rollers 13 located on the secondary tunneling transport equipment 11. Further, to maintain stability, a fourth support mechanism 9 capable of supporting the roadway surface can optionally be installed on the elevated roadway; this is not shown in the accompanying drawings of this embodiment.

[0053] The support equipment 12 moves from behind the tunneling machine 3 to below the tunnel roof 1 of the area to be supported via a second power device on the elevated road beam 5. The second power device is specifically a pulley mechanism 15, which is mounted on the support equipment 12 and moves with it. The pulley mechanism 15 specifically includes a track, a drive wheel, a driven wheel, and a second drive device 19. The second drive device 19 is specifically an electric motor. The drive wheel and the driven wheel are located at the front and rear ends of the support equipment 12, respectively. The track wraps around the support equipment 12 and is fitted onto the drive wheel and the driven wheel. The output end of the second drive device 19 is connected to the drive wheel. The support equipment 12 is equipped with a guide block 21 that presses the lower track onto the elevated road beam 5.

[0054] The second drive device 19 drives the drive wheel to rotate, and the drive wheel drives the track to move around the support equipment 12. The guide blocks 21 extend outwards and press against the inner side of the lower track, so that the lower track presses on the elevated road beam 5. The track drives the support equipment 12 to move on the elevated road beam 5. By controlling the forward rotation and flipping of the second drive device 19, the support equipment 12 can be controlled to move forward or backward.

[0055] In this embodiment, two tracks are provided at a set interval. The two tracks are respectively fitted onto their respective driving wheels and driven wheels. The output end of the second drive device 19 is coaxially connected to the two driving wheels. The second drive device 19 simultaneously drives the two driving wheels to rotate synchronously, ensuring that the two tracks move synchronously.

[0056] The elevated road beam 5 is equipped with a guide protrusion extending in the direction of extension. The radial cross section of the guide protrusion is triangular or an arc with the middle arched upward. The width of the radial cross section of the guide protrusion matches the spacing between the two tracks, so that the guide protrusion is locked between the two tracks. When the support equipment 12 deviates in direction during movement, the tracks press on the slope of the guide protrusion and slide down, restoring the travel direction of the support equipment 12.

[0057] When opened, the second support mechanism 7 can rest on the tunneling machine 3 or be supported on the tunnel floor 2. The opening and retraction of the first, second, third, and fourth support mechanisms shown in this embodiment can all be implemented using existing technologies, and the specific principles will not be elaborated further.

[0058] Example 3

[0059] This invention proposes a method for using an overhead conveyor system for transporting equipment within a tunnel. Specifically, a support mechanism 4 supports a long overhead beam 5, parallel to the tunnel axis, above a tunneling machine 3. The equipment to be transported is then conveyed from above the tunneling machine 3 to the tunnel roof 1, crossing the tunneling machine 3 for operation. In this method, the long overhead beam 5, driven by a first power unit mounted on the tunneling machine 3, moves back and forth.

[0060] The following section will further illustrate the method of using overhead conveyor belts for transporting support equipment (integrated support and anchor machine) within the roadway, while also referring to... Figures 4-6 The schematic diagram can be obtained by following these steps:

[0061] Step 1: During tunneling operations, the overhead access road and support equipment 12 are parked behind the tunneling machine 3, specifically behind the driver's seat of the tunneling machine 3, ensuring they do not interfere with the tunneling operation of the tunneling machine 3. The overhead access road beam 5 is erected above the tunneling secondary transport equipment 11 by extending the piston rod of the second support mechanism 7 and controlling the height of the lifting platform or lifting claw. Alternatively, the overhead access road can be positioned using the lifting platform or lifting claw, and the support rollers 13 mounted on the tunneling secondary transport equipment 11.

[0062] Step 2: After the tunneling operation is completed, the elevated road beam 5 is lowered onto the support roller 13. After the elevated road beam 5 is lowered, the piston rods of the first support mechanism 6 and the second support mechanism 7 are fully retracted and connected to the first power device. The first support mechanism 6 is folded 90 degrees to hide it on both sides of the elevated road beam 5. The first power device drives the elevated road beam 5 to move forward, so that the front part of the elevated road beam 5 moves to the area to be supported in front of the tunneling machine 3 (the space under the newly exposed roof). The rear part of the elevated road beam 5 is located below the support equipment 12.

[0063] Step 3: By opening the first support mechanism 6 and the second support mechanism 7, the elevated road beam 5 is lifted and disengaged from the tunneling machine 3, or in other words, the elevated road beam 5 is disengaged from the support roller 13 and the first power unit. After disengagement, the elevated road beam 5 is kept horizontal.

[0064] Step 4: The support equipment 13 located behind the tunneling machine 3 is lowered onto the elevated road beam 5 via its own lifting device 16, and then moved forward along the road surface to the area to be supported via the second power device.

[0065] Step 5: At this point, the support equipment 12 separates from the elevated road beam 5 under the support of its own lifting device 16. The self-lifting device 16 is an existing structure on the support equipment 12. Through the self-lifting device 16, the body of the support equipment 12 can be lifted upward to the roadway roof 1, thereby carrying out support operations. The self-lifting device 16 can be a single-rod hydraulic cylinder or a double-outlet hydraulic cylinder, which is not the focus of this patent and will not be described in detail. After the support equipment 13 separates from the elevated road beam 5 using its own lifting device 16, it completely retracts the piston rods of the first support mechanism 6 and the second support mechanism 7, and folds the first support mechanism 6 90 degrees to hide it on both sides of the elevated road beam 5. The first power device moves the elevated road beam 5 backward away from the area to be supported, so as not to affect the construction of the support (water exploration) equipment 12 under the newly exposed roof slab, and then the support operation is carried out.

[0066] Step Six: After the support operation is completed, the first power unit moves the elevated road beam 5 forward to below the support equipment 12. The first support mechanism 6 and the second support mechanism 7 keep the elevated road beam 5 horizontal. The support equipment 12 is lowered to the elevated road beam 5 by its own lifting device 16. The second power unit moves backward along the road surface to a designated position behind the tunneling machine 3. This designated position does not affect the construction of the tunneling machine 3. The support equipment 12 is lifted by its own lifting device 16 and separates from the elevated road beam 5.

[0067] Step 7: Move the elevated road beam 5 to the rear of the tunneling machine 3 using the first power device. Then, lift the elevated road beam 5 to the rear by extending the piston rod of the second support mechanism 7 and controlling the height of the lifting platform or lifting claw. Separate it from the tunneling equipment 11. The tunneling machine 3 then resumes tunneling operations.

[0068] When the elevated road beam 5 is moved, the piston rods of the second support mechanism 7 and the first support mechanism 6 are in the retracted state, and the first support mechanism 6 is rotated 90 degrees by the rotating device 20 to abut against both sides of the elevated road beam 5.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An elevated roadway for use in tunnels, characterized in that, The overhead conveyor is erected above the tunneling machine and is used to transport the equipment to be transported. The overhead conveyor includes: an overhead conveyor beam, which is arranged parallel to the tunnel axis, and a support mechanism, which supports the overhead conveyor beam above the tunneling machine. Support rollers are installed on the tunneling machine and the secondary tunneling transport equipment, and the overhead conveyor beam is placed on the support rollers. The support mechanism includes a first support mechanism and a second support mechanism, which are located on both sides of the center of gravity of the elevated road beam and cooperate with each other to keep the elevated road beam stably erected above the tunneling machine. The first support mechanism is connected to both sides of the elevated road beam via a rotating device, which is specifically a rotating hydraulic cylinder or a rotating motor. The rotating device can rotate the first support mechanism by 90 degrees. When the first support mechanism and the elevated road beam form a 90-degree angle, the piston rod of the first support mechanism extends and touches the ground, cooperating with the second support mechanism to control the height of the elevated road beam and adjust the pitch angle. When the first support mechanism and the elevated road beam are parallel, the first support mechanism is hidden on both sides of the elevated road beam. The rear end of the elevated road beam is equipped with a crossbeam perpendicular to the extension direction of the elevated road beam, and the second support mechanism is installed on the crossbeam. A first power unit is installed on the tunneling machine, which drives the elevated road beam to move back and forth. The equipment to be transported is equipped with a second power unit, which drives the equipment to be transported to move along the long beam of the elevated road.

2. The overhead access road used in the tunnel as described in claim 1, characterized in that, It also includes a third support mechanism, which is located between the first support mechanism and the second support mechanism and can support the tunneling machine.

3. The overhead access road used in the tunnel as described in claim 1 or 2, characterized in that, It also includes a fourth support mechanism, which is located between the first support mechanism and the second support mechanism and can be supported on the tunnel floor.

4. The overhead access road used in the tunnel as described in claim 1, characterized in that, The first power unit includes: a first drive unit, the output end of which is connected to a drive roller with gears, and a rack that cooperates with the drive roller is provided on the bottom surface of the elevated road beam.

5. The overhead access road used in the tunnel as described in claim 1, characterized in that, The second power unit is a pulley mechanism installed on the equipment to be transported. The pulley mechanism includes a track, a drive wheel, a driven wheel, and a second drive device. The drive wheel and the driven wheel are respectively located at the front end and rear end of the equipment to be transported. The track surrounds the equipment to be transported and is fitted onto the drive wheel and the driven wheel. The output end of the second drive device is connected to the drive wheel. The equipment to be transported is provided with a guide block that presses the lower track onto the long beam of the elevated road.

6. A method for using an overhead conveyor system in a tunnel as described in any one of claims 1-5, characterized in that, The method involves using a support mechanism to support and erect a long elevated road beam parallel to the roadway axis above the tunneling machine, and then transferring the equipment to be transported from above the tunneling machine to the roadway roof across the tunneling machine for operation; specifically, it includes the following steps: Step 1: During tunneling operations, the overhead road and support equipment are parked behind the tunneling machine, specifically behind the driver's seat. By extending the piston rod of the second support mechanism and controlling the height of the lifting platform or lifting claw, the long beam of the overhead road is erected above the tunneling equipment. Step 2: After the tunneling operation is completed, the elevated road beam is lowered onto the support rollers. After the elevated road beam is lowered, the piston rods of the first and second support mechanisms are fully retracted and connected to the first power unit. The first support mechanism is then folded 90 degrees to hide it on both sides of the elevated road beam. The first power unit drives the elevated road beam forward, moving the front part of the elevated road beam to the area to be supported in front of the tunneling machine, while the rear part of the elevated road beam is located below the support equipment. Step 3: By opening the first and second support mechanisms, the elevated road beam is lifted and detached from the tunneling machine, or in other words, the elevated road beam is detached from the support rollers and the first power unit. After detachment, the elevated road beam is kept horizontal. Step 4: The support equipment located behind the tunneling machine is lowered onto the long beam of the elevated road via its own lifting device, and then moved forward along the road surface to the area to be supported via the second power device. Step 5: At this point, the support equipment separates from the elevated road beam under the support of its own lifting device. The self-lifting device is an existing structure on the support equipment. Through the self-lifting device, the main body of the support equipment can be lifted upward to the roof of the roadway to carry out support work. After the support equipment separates from the elevated road beam using its own lifting device, the piston rods of the first support mechanism and the second support mechanism are completely retracted, and the first support mechanism is folded 90 degrees to hide it on both sides of the elevated road beam. The first power device moves the elevated road beam backward away from the area to be supported to ensure that the construction of the support equipment under the newly exposed roof is not affected. Then the support work is carried out. Step Six: After the support work is completed, the first power unit moves the elevated road beam forward to below the support equipment. The first and second support mechanisms keep the elevated road beam horizontal. The support equipment is lowered to the elevated road beam by its own lifting device. The second power unit moves backward along the road surface to a designated position behind the tunneling machine. This designated position does not affect the tunneling machine's construction. The support equipment is lifted and separated from the elevated road beam by its own lifting device. Step 7: Move the elevated road beam to the rear of the tunneling machine using the first power unit. Then, lift the elevated road beam to the rear of the tunneling machine by extending the piston rod of the second support mechanism and controlling the height of the lifting platform or lifting claw. Separate the elevated road beam from the tunneling equipment. The tunneling machine will then start tunneling again. When the elevated road beam is moved, the piston rods of the second support mechanism and the first support mechanism are in the retracted state, and the first support mechanism is rotated 90 degrees by the rotating device to fit against both sides of the elevated road beam.

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