Tunnel blind pipe reaming machine and construction method thereof

Abstract

The invention belongs to the field of blind pipe reaming, and particularly relates to a tunnel blind pipe reaming machine and a construction method thereof.The tunnel blind pipe reaming machine comprises a machine box, universal wheels are fixedly connected to the bottom of the machine box, two push handles are fixedly connected to the outer side of the machine box, a control device is fixedly connected to the top of the machine box, and a lifting assembly is arranged in the machine box; a drilling assembly is arranged on the outer side of the lifting assembly. Through movement of a transmission ring, a second connecting block is driven to move, so that a transmission block is driven to move, the orientation of the end of the transmission block is changed, then an expansion block is jacked, the expansion block and a first connecting block can rotate along the interior of a drill bit, and the expansion block moves to the outer side of a connecting cylinder; the outer side of the expansion block is moved to the needed size, then the blind pipe can be expanded conveniently in the follow-up process, the number of drill bits needing to be carried is reduced, manpower and material resources needing to be consumed are reduced, meanwhile, the time needed for replacing the drill bits is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of blind pipe reaming, specifically a tunnel blind pipe reaming machine and its construction method. Background Technology

[0002] Drainage blind pipes, also known as drainage blind ditches, are mainly made of synthetic fibers, plastics, and synthetic rubber, and manufactured into various types and multifunctional geotechnical products through different processes. Their materials are water-repellent and have low resistance, possessing extremely high surface permeability and internal water permeability; they also have excellent compressive strength and adaptability to deformation; they have excellent chemical inertness, maintaining a long service life in geotechnical engineering applications; they are lightweight, easy to cut, and convenient to construct and install.

[0003] Over time, tunnel blind pipes may become blocked or their diameter may decrease due to various reasons, leading to poor drainage. Enlarging the pipe's inner diameter increases its cross-sectional area, thereby improving its drainage capacity and ensuring that accumulated water in the tunnel can be drained promptly, reducing damage to the tunnel structure caused by water accumulation.

[0004] When repairing or replacing blind pipes, it is sometimes necessary to enlarge the holes at the original installation location to accommodate the new blind pipe size or to facilitate construction operations. This requires the use of a hole enlarging device. However, the hole enlarging devices currently used for blind pipe enlarging have fixed drill bit sizes. This means that when enlarging blind pipes of different sizes, it is necessary to carry drill bits of different sizes to cope with the different sizes of blind pipes. This requires more manpower and resources to transport drill bits of multiple sizes, and changing drill bits also takes a lot of time, resulting in low work efficiency.

[0005] Therefore, the present invention provides a tunnel blind pipe reaming machine and its construction method. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a tunnel blind pipe reaming machine, including a chassis, a universal wheel fixedly connected to the bottom of the chassis, two push handles fixedly connected to the outside of the chassis, a control device fixedly connected to the top of the chassis, a lifting assembly provided inside the chassis, a drilling assembly provided outside the lifting assembly, the drilling assembly including a limiting plate slidably connected to the inside of the lifting assembly, a connecting cylinder rotatably connected inside the limiting plate, the connecting cylinder penetrating the limiting plate, a drill bit fixedly connected to the end of the connecting cylinder, a first connecting block rotatably connected inside the drill bit, an expansion block fixedly connected to the end of the first connecting block, a second connecting block fixedly connected to the inside of the expansion block, two second connecting blocks are provided, a transmission block rotatably connected to the outside of the two second connecting blocks, and a transmission ring fixedly connected to the end of the second second connecting block.

[0008] Preferably, an adjustment component is provided on the outer side of the transmission ring. The adjustment component includes a third screw threadedly connected to the inside of the transmission ring, a knob fixedly connected to the outer side of the third screw, and a partition plate rotatably connected to the end of the third screw. The partition plate is fixedly connected to the inside of the connecting cylinder.

[0009] Preferably, the adjusting assembly further includes a mounting plate rotatably connected to the end of the third screw, the mounting plate being fixedly connected inside the connecting cylinder, a limit ring being fixedly connected inside the mounting plate, and the outer side of the limit ring being slidably connected to the inside of the transmission block.

[0010] Preferably, the lifting assembly includes a mounting frame slidably connected to the inside of the chassis, a limiting strip fixedly connected inside the mounting frame, the outer side of the limiting strip slidably connected to the inside of the limiting plate, a first screw fixedly connected to the top of the mounting frame, the first screw passing through the chassis and slidably connected, a handle threadedly connected to the outer side of the first screw, and the handle rotatably connected to the top of the chassis.

[0011] Preferably, the mounting frame is provided with an extension component, the extension component including a first motor fixedly connected to the inside of the mounting frame, the first motor being electrically connected to a control device, a second screw fixedly connected to the transmission end of the first motor, a transmission ring threadedly connected to the outer side of the second screw, the outer side of the transmission ring being slidably connected to the inside of the mounting frame, a connecting rod fixedly connected to the bottom of the transmission ring, and the end of the connecting rod being fixedly connected to a limiting plate.

[0012] Preferably, the connecting cylinder is provided with a rotating component, which includes a transmission gear fixedly connected to the inside of the connecting cylinder, a planetary gear meshing with the outer side of the transmission gear, a rotating shaft fixedly connected inside the planetary gear, an auxiliary ring rotatably connected to one end of the rotating shaft, the outer side of the auxiliary ring being slidably connected to the inside of the separator plate, and the other end being rotatably connected to the outer side of the limiting plate.

[0013] Preferably, the rotating assembly further includes a sun gear meshing with the outer side of the planetary gear. A transmission rod is fixedly connected inside the sun gear. One end of the transmission rod is rotatably connected to the outer side of the partition disk, and the other end is fixedly connected to a second motor. The second motor is electrically connected to the control device and is fixedly connected to the outer side of the limiting disk.

[0014] Preferably, a support assembly is provided on the outside of the chassis. The support assembly includes a rotating seat fixedly connected to the outside of the chassis. A connecting screw is rotatably connected inside the rotating seat. A screw cylinder is threadedly connected to the outside of the connecting screw. A pad is fixedly connected to the bottom of the screw cylinder.

[0015] The construction method of the tunnel blind pipe expansion device according to the present invention includes the following specific construction steps:

[0016] S1: First, use measuring instruments to determine the location for hole enlargement, then mark the blind tube, and then use a suitable hole-making tool to make a hole at the marked location, thus creating conditions for subsequent hole enlargement operations.

[0017] S2: After the small hole is drilled, turn the handle to drive the first screw to rotate, thereby driving the mounting frame to rise and fall, which in turn drives the drill bit to rise and fall, so that the drill bit is aligned with the end of the blind tube. Then push the entire device to allow the drill bit to enter the blind tube.

[0018] S3: Then rotate the screw barrel to move it outside the connecting screw, so that the pad abuts against the trench wall to support the chassis, so that the outside of the chassis abuts against the trench wall on the other side, thereby using the casters to restrict and fix the position of the chassis.

[0019] S4: After the drill bit is placed inside the blind pipe, turn the knob to drive the third screw to rotate, thereby driving the transmission ring to move, which in turn causes the transmission block to move along the limit ring, thereby causing the transmission block and the first connecting block to rotate, thereby adjusting the opening angle of the expansion block;

[0020] S5: Next, start the second motor, which drives the sun gear to rotate, which in turn drives the planet gear to rotate, which in turn drives the transmission gear to rotate, which in turn drives the connecting cylinder and the drill bit to rotate, thereby drilling the material around the blind tube and enlarging the hole.

[0021] S6: After the periphery of the blind tube end is expanded, the first motor is started, which drives the second screw to rotate, thereby driving the transmission ring to move, which in turn drives the connecting rod to move, thereby driving the limiting plate, connecting cylinder and drill bit to move, so that the drill bit and expansion block gradually penetrate into the blind tube, thus completing the hole expansion.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention uses the movement of the transmission ring to drive the movement of the second connecting block, which in turn drives the transmission block to move, thereby changing the orientation of the end of the transmission block and pushing the expansion block. This allows the expansion block and the first connecting block to rotate along the inside of the drill bit, thus moving the expansion block to the outside of the connecting cylinder and moving the outer side of the expansion block to the required size. This facilitates subsequent enlarging of the blind pipe, reducing the number of drill bits required, thus reducing the manpower and material resources needed, and also reducing the time required to change drill bits, thereby improving work efficiency.

[0024] 2. This invention uses a handle to rotate, thereby moving the first screw and the mounting frame. This allows for easy adjustment of the drill bit alignment, facilitating alignment between the drill bit and the blind pipe, and thus enabling subsequent hole enlargement. Furthermore, a first motor can drive a second screw to rotate, which in turn moves a transmission ring and a connecting rod, further facilitating drill bit movement. This allows the drill bit's position to be adjusted according to the required drilling depth, thereby improving the device's adaptability.

[0025] 3. In this invention, the second motor drives the transmission rod to rotate, which in turn drives the sun gear to rotate, which in turn drives the planetary gear to rotate, which in turn drives the transmission gear to rotate, which in turn drives the connecting cylinder to rotate, which in turn drives the expansion block and the drill bit to rotate, thereby facilitating drilling and hole enlargement. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall side view structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the overall structure from another perspective in this invention;

[0029] Figure 3 This is a schematic diagram of the overall internal component structure in this invention;

[0030] Figure 4 This is a schematic diagram of the internal component structure of the present invention;

[0031] Figure 5 This is a cross-sectional view of some internal components in this invention;

[0032] Figure 6 This is a schematic diagram of the internal component breakdown structure in this invention;

[0033] Figure 7 This is a schematic diagram of the disassembled side view of some components in this invention;

[0034] Figure 8This is a schematic diagram of the structure of some components of the present invention from another perspective;

[0035] Figure 9 This is a schematic diagram of the external component disassembly structure in this invention;

[0036] Figure 10 This is a flowchart of the construction method in this invention.

[0037] In the diagram: 1. Chassis; 2. Casters; 3. Push handle; 4. Control device; 5. Mounting frame; 6. First screw; 7. Handle; 8. Limiting strip; 9. First motor; 10. Second screw; 11. Transmission ring; 12. Connecting rod; 13. Limiting plate; 14. Connecting cylinder; 15. Drill bit; 16. First connecting block; 17. Expansion block; 18. Second connecting block; 19. Transmission block; 20. Transmission ring; 21. Third screw; 22. Knob; 23. Mounting plate; 24. Divider plate; 25. Limiting ring; 26. Transmission gear; 27. Planetary gear; 28. Rotating shaft; 29. ​​Auxiliary ring; 30. Sun gear; 31. Second motor; 32. Rotary seat; 33. Connecting screw; 34. Screw barrel; 35. Pad. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] Example 1: As Figures 1 to 8 As shown in the figure, a tunnel blind pipe reaming machine according to an embodiment of the present invention includes a housing 1. A caster wheel 2 is fixedly connected to the bottom of the housing 1. Two push handles 3 are fixedly connected to the outside of the housing 1. A control device 4 is fixedly connected to the top of the housing 1. A lifting assembly is provided inside the housing 1. A drilling assembly is provided outside the lifting assembly. The drilling assembly includes a limiting plate 13 slidably connected inside the lifting assembly. A connecting cylinder 14 is rotatably connected inside the limiting plate 13, passing through the limiting plate 13. A drill bit 15 is fixedly connected to the end of the connecting cylinder 14. A first connecting block 16 is rotatably connected inside the drill bit 15. An expansion block 17 is fixedly connected to the end of the first connecting block 16. A second connecting block 18 is fixedly connected to the inside of the expansion block 17. Two second connecting blocks 18 are provided. A transmission block 19 is rotatably connected to the outside of the two second connecting blocks 18. A transmission ring 20 is fixedly connected to the end of the second second connecting block 18.

[0040] During operation, the movement of the transmission ring 20 drives the second connecting block 18 to move, which in turn drives the transmission block 19 to move, thereby changing the orientation of the end of the transmission block 19 and pushing the expansion block 17. This allows the expansion block 17 and the first connecting block 16 to rotate along the inside of the drill bit 15, thus moving the expansion block 17 to the outside of the connecting cylinder 14. This moves the outer side of the expansion block 17 to the required size, facilitating subsequent enlarging of the blind tube. This reduces the number of drill bits 15 that need to be carried, thereby reducing the manpower and material resources required. At the same time, it reduces the time required to change the drill bits 15, thereby improving work efficiency.

[0041] An adjustment assembly is provided on the outside of the transmission ring 20. The adjustment assembly includes a third screw 21 threadedly connected to the inside of the transmission ring 20, a knob 22 fixedly connected to the outside of the third screw 21, and a partition disk 24 rotatably connected to the end of the third screw 21. The partition disk 24 is fixedly connected to the inside of the connecting cylinder 14.

[0042] The adjustment assembly also includes a mounting plate 23 rotatably connected to the end of the third screw 21. The mounting plate 23 is fixedly connected to the inside of the connecting cylinder 14. A limit ring 25 is fixedly connected inside the mounting plate 23. The outer side of the limit ring 25 is slidably connected to the inside of the transmission block 19.

[0043] During operation, the knob 22 is turned to drive the third screw 21 to rotate, thereby moving the transmission ring 20 and changing the position of the end of the expansion block 17.

[0044] When the transmission block 19 is driven by the transmission ring 20, the limiting ring 25 restricts the movement of the transmission block 19, causing the end of the transmission block 19 to lift up and extend, thereby causing the end of the expansion block 17 to lift up, so as to facilitate the adaptation to different required expansion sizes, thus facilitating hole enlargement.

[0045] The lifting assembly includes a mounting frame 5 that is slidably connected inside the chassis 1. A limit strip 8 is fixedly connected inside the mounting frame 5. The outer side of the limit strip 8 is slidably connected to the inside of the limit plate 13. A first screw 6 is fixedly connected to the top of the mounting frame 5. The first screw 6 passes through the chassis 1 and is slidably connected. A handle 7 is threadedly connected to the outer side of the first screw 6. The handle 7 is rotatably connected to the top of the chassis 1.

[0046] During operation, by rotating the handle 7, the first screw 6 is moved, which in turn moves the mounting frame 5. This allows for changes in the alignment of the drill bit 15 with the blind tube, facilitating subsequent hole enlargement.

[0047] The mounting frame 5 is equipped with an extension component, which includes a first motor 9 fixedly connected inside the mounting frame 5. The first motor 9 is electrically connected to the control device 4. A second screw 10 is fixedly connected to the transmission end of the first motor 9. A transmission ring 11 is threadedly connected to the outer side of the second screw 10. The outer side of the transmission ring 11 is slidably connected to the inside of the mounting frame 5. A connecting rod 12 is fixedly connected to the bottom of the transmission ring 11. The end of the connecting rod 12 is fixedly connected to the limiting plate 13.

[0048] During operation, the first motor 9 drives the second screw 10 to rotate, which in turn drives the transmission ring 11 to move, thereby driving the connecting rod 12 to move, which facilitates the movement of the drill bit 15. This allows the position of the drill bit 15 to be changed according to the required drilling depth, thus improving the adaptability of the device.

[0049] The connecting cylinder 14 is equipped with a rotating component, which includes a transmission gear 26 fixedly connected inside the connecting cylinder 14. A planetary gear 27 meshes with the outside of the transmission gear 26. A rotating shaft 28 is fixedly connected inside the planetary gear 27. An auxiliary ring 29 is rotatably connected to one end of the rotating shaft 28. The outer side of the auxiliary ring 29 is slidably connected to the inside of the partition disk 24, and the other end is rotatably connected to the outer side of the limiting disk 13.

[0050] The rotating assembly also includes a sun gear 30 meshing with the outer side of the planetary gear 27. A transmission rod is fixedly connected inside the sun gear 30. One end of the transmission rod is rotatably connected to the outer side of the partition disk 24, and the other end is fixedly connected to a second motor 31. The second motor 31 is electrically connected to the control device 4 and is fixedly connected to the outer side of the limit disk 13.

[0051] During operation, the second motor 31 drives the transmission rod to rotate, which in turn drives the sun gear 30 to rotate, which in turn drives the planetary gear 27 to rotate, which in turn drives the transmission gear 26 to rotate, which in turn drives the connecting cylinder 14 to rotate, which in turn drives the expansion block 17 and the drill bit 15 to rotate, thus facilitating drilling and hole enlargement.

[0052] Example 2: Figure 9 As shown in the first embodiment, another embodiment of the present invention is as follows: a support assembly is provided on the outside of the chassis 1. The support assembly includes a rotating seat 32 fixedly connected to the outside of the chassis 1. A connecting screw 33 is rotatably connected inside the rotating seat 32. A screw cylinder 34 is threadedly connected to the outside of the connecting screw 33. A pad 35 is fixedly connected to the bottom of the screw cylinder 34.

[0053] During operation, by picking up the screw barrel 34, the pad 35 is aligned with the trench wall. Then, the screw barrel 34 is rotated, which moves the screw barrel 34 outside the connecting screw 33, so that the pad 35 abuts against the trench wall and the outer side of the housing 1 abuts against the trench wall on the other side, thereby restricting the position of the housing 1 and improving the stability of the device during subsequent hole enlargement.

[0054] The construction method of the tunnel blind pipe expansion device of the present invention includes the following specific construction steps:

[0055] S1: First, use measuring instruments to determine the location for hole enlargement, then mark the blind tube, and then use a suitable hole-making tool to make a hole at the marked location, thus creating conditions for subsequent hole enlargement operations.

[0056] S2: After the small hole is opened, turn the handle 7 to drive the first screw 6 to rotate, thereby driving the mounting frame 5 to rise and fall, thereby driving the drill bit 15 to rise and fall, so that the drill bit 15 is aligned with the end of the blind tube. Then push the whole device to allow the drill bit 15 to enter the blind tube.

[0057] S3: Then rotate the screw cylinder 34 to move the screw cylinder 34 outside the connecting screw 33, so that the pad 35 abuts against the trench wall, thereby supporting the chassis 1, so that the outside of the chassis 1 abuts against the trench wall on the other side, thereby cooperating with the caster 2 to restrict and fix the position of the chassis 1.

[0058] S4: After the drill bit 15 is placed inside the blind tube, turn the knob 22 to drive the third screw 21 to rotate, thereby driving the transmission ring 20 to move, and then causing the transmission block 19 to move along the limit ring 25, thereby causing the transmission block 19 and the first connecting block 16 to rotate, thereby adjusting the opening angle of the expansion block 17.

[0059] S5: Next, start the second motor 31, which drives the sun gear 30 to rotate, thereby driving the planet gear 27 to rotate, which in turn drives the transmission gear 26 to rotate, thereby driving the connecting cylinder 14 and the drill bit 15 to rotate, thereby drilling the material around the blind tube to enlarge the hole.

[0060] S6: After the periphery of the blind tube end is expanded, the first motor 9 is started, which drives the second screw 10 to rotate, thereby driving the transmission ring 11 to move, which in turn drives the connecting rod 12 to move, thereby driving the limiting plate 13, the connecting cylinder 14 and the drill bit 15 to move, so that the drill bit 15 and the expansion block 17 gradually penetrate into the blind tube, thereby completing the hole expansion.

[0061] Working principle: First, move the device to the outside of the blind pipe, then pick up the screw 34 so that the pad 35 is aligned with the trench wall. Then rotate the screw 34 so that the screw 34 moves outside the connecting screw 33, so that the pad 35 abuts against the trench wall and the outside of the chassis 1 abuts against the trench wall on the other side, thereby restricting the position of the chassis 1.

[0062] Next, turn the handle 7 to move the first screw 6, which in turn moves the mounting frame 5, so as to change the alignment position of the drill bit 15 and make it easier to align the drill bit 15 with the blind pipe.

[0063] Then, turn the knob 22 to drive the third screw 21 to rotate, thereby moving the transmission ring 20, which in turn moves the second connecting block 18, which in turn moves the transmission block 19, thereby changing the orientation of the end of the transmission block 19, and thus pushing the expansion block 17, so that the expansion block 17 and the first connecting block 16 can rotate along the inside of the drill bit 15, thereby moving the expansion block 17 to the outside of the connecting cylinder 14, and thus moving the outer side of the expansion block 17 to the required size, which facilitates the subsequent enlarging of the blind tube, thereby reducing the number of drill bits 15 that need to be carried, thereby reducing the manpower and material resources required, and at the same time reducing the time required to change the drill bit 15, thereby improving work efficiency;

[0064] Next, the second motor 31 drives the transmission rod to rotate, which in turn drives the sun gear 30 to rotate, which in turn drives the planetary gear 27 to rotate, which in turn drives the transmission gear 26 to rotate, which in turn drives the connecting cylinder 14 to rotate, which in turn drives the expansion block 17 and the drill bit 15 to rotate, thus facilitating drilling.

[0065] When the drilling depth is long, the first motor 9 can drive the second screw 10 to rotate, thereby driving the transmission ring 11 to move, which in turn drives the connecting rod 12 to move, thus facilitating the movement of the drill bit 15. This allows the position of the drill bit 15 to be changed according to the required drilling depth, thereby improving the adaptability of the device.

[0066] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0067] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 limiting the scope of protection of this invention.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel blind pipe reamer, comprising a cabinet (1), the bottom of the cabinet (1) is fixedly connected with universal wheels (2), the outer side of the cabinet (1) is fixedly connected with two push handles (3), and the top of the cabinet (1) is fixedly connected with a control device (4); characterized in that A lifting assembly is arranged in the cabinet (1), a drilling assembly is arranged on the outer side of the lifting assembly, the drilling assembly comprises a limiting disc (13) which is slidingly connected in the lifting assembly, a connecting barrel (14) is rotatably connected in the limiting disc (13), the connecting barrel (14) penetrates through the limiting disc (13), and a drill bit (15) is fixedly connected to the end of the connecting barrel (14); A first connecting block (16) is rotatably connected in the drill bit (15), an expansion block (17) is fixedly connected to the end of the first connecting block (16), a second connecting block (18) is fixedly connected to the inner side of the expansion block (17), there are two second connecting blocks (18), a transmission block (19) is rotatably connected to the outer side of the two second connecting blocks (18), and a transmission ring (20) is fixedly connected to the end of the second connecting block (18).

2. A tunnel and blind pipe reamer as claimed in claim 1, characterized in that: An adjusting assembly is arranged on the outer side of the transmission ring (20), the adjusting assembly comprises a third screw rod (21) which is screwedly connected in the transmission ring (20), a knob (22) is fixedly connected to the outer side of the third screw rod (21), a partition disc (24) is rotatably connected to the end of the third screw rod (21), and the partition disc (24) is fixedly connected in the connecting barrel (14).

3. A tunnel and blind pipe reamer according to claim 2, characterised in that: The adjusting assembly further comprises a mounting plate (23) which is rotatably connected to the end of the third screw rod (21), the mounting plate (23) is fixedly connected in the connecting barrel (14), a limiting ring (25) is fixedly connected in the mounting plate (23), and the limiting ring (25) is slidingly connected to the inner side of the transmission block (19).

4. A tunnel and blind pipe reamer according to claim 3, characterised in that: The lifting assembly comprises a mounting frame (5) which is slidingly connected in the cabinet (1), a limiting strip (8) is fixedly connected in the mounting frame (5), the limiting strip (8) is slidingly connected to the inner side of the limiting disc (13), a first screw rod (6) is fixedly connected to the top of the mounting frame (5), the first screw rod (6) penetrates through the cabinet (1) and is slidingly connected, a handle (7) is screwedly connected to the outer side of the first screw rod (6), and the handle (7) is rotatably connected to the top of the cabinet (1).

5. A tunnel and blind pipe reamer according to claim 4, characterised in that: An extension assembly is arranged in the mounting frame (5), the extension assembly comprises a first motor (9) which is fixedly connected in the mounting frame (5), the first motor (9) is electrically connected with the control device (4), a second screw rod (10) is fixedly connected to the transmission end of the first motor (9), a transmission ring (11) is screwedly connected to the outer side of the second screw rod (10), the transmission ring (11) is slidingly connected to the inner side of the mounting frame (5), a connecting rod (12) is fixedly connected to the bottom of the transmission ring (11), and the end of the connecting rod (12) is fixedly connected with the limiting disc (13).

6. A tunnel and blind pipe reamer according to claim 5, characterised in that: The connecting barrel (14) is internally provided with a rotating assembly, the rotating assembly comprises a transmission gear (26) fixedly connected to the inside of the connecting barrel (14), the transmission gear (26) is meshed with a planetary gear (27) on the outside, the planetary gear (27) is fixedly connected with a rotating shaft (28) on the inside, one end of the rotating shaft (28) is rotatably connected with an auxiliary ring (29), the auxiliary ring (29) is slidably connected with the inside of the partition disc (24) on the outside, and the other end is rotatably connected with the outside of the limiting disc (13).

7. A tunnel and blind pipe reamer according to claim 6, characterised in that: The rotating assembly further comprises a sun gear (30) meshed with the outside of the planetary gear (27), the sun gear (30) is fixedly connected with a transmission rod on the inside, one end of the transmission rod is rotatably connected with the outside of the partition disc (24), and the other end is fixedly connected with a second motor (31), the second motor (31) is electrically connected with the control device (4), and the second motor (31) is fixedly connected to the outside of the limiting disc (13).

8. A tunnel and blind pipe reamer according to claim 7, characterised in that: The case (1) is provided with a supporting assembly on the outside, the supporting assembly comprises a rotating seat (32) fixedly connected to the outside of the case (1), the rotating seat (32) is rotatably connected with a connecting screw rod (33) on the inside, the connecting screw rod (33) is threadedly connected with a screw cylinder (34) on the outside, and the screw cylinder (34) is fixedly connected with a cushion (35) on the bottom.

9. A construction method of a tunnel blind pipe reaming device, the method is used for controlling the tunnel blind pipe reaming machine in claim 8, and the method is characterized by comprising the steps of: S1: first, using a measuring instrument to determine the reaming position, then marking on the blind pipe, and then using a suitable hole opening tool to open a hole at the mark, thereby creating conditions for subsequent reaming operation; S2: when the small hole is opened, rotate the handle (7) to drive the first screw rod (6) to rotate, thereby driving the mounting frame (5) to lift and drive the drill bit (15) to lift, so that the drill bit (15) is aligned with the end of the blind pipe, then push the device as a whole, so that the drill bit (15) enters the inside of the blind pipe; S3: then rotate the screw cylinder (34) to move the screw cylinder (34) on the outside of the connecting screw rod (33), so that the cushion (35) abuts against the ditch wall, thereby supporting the case (1), so that the outside of the case (1) abuts against the ditch wall on the other side, thereby cooperating with the universal wheel (2) to limit and fix the position of the case (1); S4: after placing the drill bit (15) into the blind pipe, rotate the knob (22) to drive the third screw rod (21) to rotate, thereby driving the transmission ring (20) to move, and then making the transmission block (19) move along the limiting ring (25), so that the transmission block (19) and the first connecting block (16) rotate, thereby adjusting the angle of the expansion block (17) opening; S5: then start the second motor (31) to drive the sun gear (30) to rotate, thereby driving the planetary gear (27) to rotate, and then driving the transmission gear (26) to rotate, thereby driving the connecting barrel (14) and the drill bit (15) to rotate, so as to drill the material around the blind pipe, thereby reaming. S6: after the blind pipe end periphery is expanded, the first motor (9) is started, so as to drive the second screw (10) to rotate, so as to drive the transmission ring (11) to move, and then drive the connecting rod (12) to move, so as to drive the limiting disc (13), the connecting barrel (14) and the drill bit (15) to move, so that the drill bit (15) and the expansion block (17) gradually penetrate into the blind pipe, so as to complete the hole expansion.

Images