Detection hole reserving device based on primary support tunnel detection

Abstract

The invention relates to the technical field of primary support tunnel detection, in particular to a detection hole reserving device based on primary support tunnel detection. The device comprises a bearing steel arch frame and an embedded plate fixed to one side of the bearing steel arch frame, a preformed hole mechanism is assembled on one side of the embedded plate, and the preformed hole mechanism comprises a hoop, a circular through pipe and a plugging barrel. Through the structural design of the preformed hole mechanism and the end expansion mechanism, the device can conveniently leave detection holes with different hole diameters when the detection holes are reserved, detection sample points are conveniently increased, the detection result is more accurate, the flexibility of the device is improved, and through the structural design of a plugging cylinder and an adjusting mechanism, the detection efficiency is improved. According to the device, the end parts of the circular through pipes with different hole diameters can be plugged, detection holes with different hole diameters can be formed, when the specifications of the circular through pipes are changed, the internal plugging areas can be changed along with the changes, and the effect of repeated detection and utilization is well achieved.

Description

Technical Field

[0001] The invention relates to the technical field of primary branch tunnel detection, and in particular to a detection hole reservation device based on primary branch tunnel detection. Background Art

[0002] With the continuous growth of the country's investment in the field of tunnel engineering, the number of tunnel construction in my country has ushered in a period of rapid growth. However, at the same time, a series of challenges arising from tunnel construction have gradually surfaced. The most noteworthy of these is the frequent occurrence of voids in the initial support stage of the tunnel. The initial support structure, as the first line of defense that directly bears and disperses the huge pressure of the surrounding rock, has an inestimable value in terms of integrity and stability to ensure the long-term safe operation of the entire tunnel project. Once voids appear in this critical link, it will not only weaken the bearing capacity of the support structure, but may also trigger a chain reaction, seriously threatening the overall stability and safety of the tunnel.

[0003] In order to effectively meet this challenge, a series of technical means are widely used in current engineering practice to ensure that the concrete sprayed by the initial support of the tunnel can meet the quality standards of denseness and no voids. Among them, drilling detection of the initial support layer has become a crucial link. At present, the industry mainly relies on two detection methods: one is the nail embedding method, and the other is the drilling method. However, both of these traditional detection methods have certain limitations and challenges. Specifically, although the nail embedding method can theoretically provide reference information about the internal situation of the concrete, the actual application effect of this method is greatly reduced because the accuracy of positioning in actual operation is difficult to guarantee, and the precise search for nails after spraying concrete becomes extremely difficult. On the other hand, the drilling method is carried out only after the concrete spraying operation is completely completed. This lag may not only make it difficult to accurately control the drilling depth, increasing the risk of damaging the integrity of the support structure, but also easily lead to deviations in the grasp of the verticality of the drilling, further affecting the accuracy and reliability of the test results.

[0004] Therefore, exploring more efficient and accurate tunnel initial support void detection technology has become an important issue that needs to be urgently solved in the current tunnel engineering field. Therefore, the existing technology has adopted a reserved tube method to reserve detection holes. Although the existing technology can reserve detection holes during use, the aperture size of the reserved tube is single, resulting in the detection surface that can be given by the detection hole during detection is mostly of uniform size, and the inner surface of the larger aperture detection hole is mostly compacted and flattened compared to the small aperture detection hole, resulting in deviations in the detection results. For this reason, we propose a detection hole reservation device based on initial support tunnel detection. Summary of the invention

[0005] The object of the present invention is to provide a detection hole reservation device based on primary branch tunnel detection to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A detection hole reservation device based on primary branch tunnel detection includes a load-bearing steel arch frame and an inner plate fixed on one side of the load-bearing steel arch frame, one side of the inner plate is equipped with a reserved hole mechanism, the reserved hole mechanism includes a hoop, a circular through pipe and a blocking cylinder, both ends of one side of the inner plate are fixed with hoop, a circular through pipe is arranged on the inner side of the two hoop, a blocking cylinder is penetrated on the inner side of the circular through pipe, and an end expansion mechanism is arranged on the inner side of the blocking cylinder.

[0007] Preferably, the end expansion mechanism includes a guide assembly and a transmission assembly, a first connecting cavity column is fixed to one end of the sealing cylinder, a second connecting cavity column is fixed to the end of the first connecting cavity column away from the sealing cylinder, a guide assembly is installed between the second connecting cavity column and the first connecting cavity column, and a transmission assembly is installed on the inner side of the guide assembly.

[0008] Preferably, the guide assembly includes a carrying sleeve, a small diameter depth expansion column, a transmission rod, a center gear, a guide gear, a drive rod and an inner gear ring. The end of the second connecting chamber column away from the first connecting chamber column is threadedly connected to the carrying sleeve, and the inner side of the carrying sleeve is slidingly connected to the small diameter depth expansion column. One end of the first connecting chamber column is rotatably connected to the transmission rod, and one end of the transmission rod is fixed with a center gear. The top and bottom of the center gear are meshed with the guide gear, and a transmission rod is fixed on one side of the guide gear. One end of the transmission rod is rotatably connected to the inner side of the first connecting chamber column, and one end of the inner side of the first connecting chamber column is fixed with an inner gear ring, and the guide gears are meshed with the inner gear ring.

[0009] Preferably, the transmission assembly includes a rotating head, a transmission roller, a guide spiral groove, a displacement force transmission column and a connecting spring. A rotating head is fixed to one side of the inner gear ring, and the rotating head is rotatably connected to the second connecting cavity column. A transmission roller is fixed to one end of the rotating head. A guide spiral groove is provided on the outer side of the transmission roller, and a displacement force transmission column is slidably connected to the inner side of the guide spiral groove. The displacement force transmission column is fixed to a small diameter depth expansion column, and the bottom of the displacement force transmission column is slidably connected to a carrying sleeve. A connecting spring is fixed to one end of the inner side of the small diameter depth expansion column, and one end of the connecting spring is fixed to the transmission roller.

[0010] Preferably, an axial limiting groove corresponding to the position of the displacement force transmission column is opened at the bottom of the inner side of the carrying sleeve, and the axial limiting groove is slidably connected to the displacement force transmission column.

[0011] Preferably, an end guide cylinder is fixed to one end of the blocking cylinder, and an adjustment mechanism is installed on the inner side of the end guide cylinder.

[0012] Preferably, the adjustment mechanism includes a primary movable component and a secondary movable component, a first connecting surface plate is fixed to one end of the end guide cylinder, a slide column is fixed to the inner side of the first connecting surface plate, a second connecting surface plate is fixed to one end of the slide column, and a primary movable component and a secondary movable component are assembled between the slide column and the first connecting surface plate.

[0013] Preferably, the first-level movable component includes a supporting plate, a first carrying leaf rod, a docking square rod, a first force guiding support rod and a first one-eighth cone rubber cavity block, the outer side of the slide column is evenly slidably connected with four first carrying leaf rods, one end of the four first carrying leaf rods is fixed with a supporting plate, a side of the supporting plate away from the first carrying leaf rod is fixed with a docking square rod, the supporting plate corresponds to the position of the first connecting surface plate, one end of the first carrying leaf rod away from the supporting plate is rotatably connected to two first force guiding support rods, one end of the two first force guiding support rods located on the same first carrying leaf rod is rotatably connected to a first one-eighth cone rubber cavity block, and the first one-eighth cone rubber cavity block is in close contact with the end guide cylinder.

[0014] Preferably, the secondary movable component includes a central force-applying column, a second carrying leaf rod, a second force-guiding support rod and a second one-eighth frustum rubber cavity block; the inner sides of the docking square rod and the supporting plate are slidably connected with a central force-applying column; one end of the central force-applying column is fixed with four second carrying leaf rods; the second carrying leaf rods are slidably connected with the slide groove column; one ends of the four second carrying leaf rods are rotatably connected with two second force-guiding support rods; one ends of two second force-guiding support rods located on the same second carrying leaf rod are rotatably connected with a second one-eighth frustum rubber cavity block; the second one-eighth frustum rubber cavity block is in close contact with the end guide cylinder.

[0015] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0016] At the same time, through the above technical solutions, the present invention has at least the following beneficial effects: 1. The present invention adopts the structural design of the reserved hole mechanism and the end expansion mechanism, so that the device can leave detection holes of different apertures when reserving detection holes, which is convenient for increasing detection sample points, making the detection results more accurate and improving the flexibility of the device.

[0017] 2. The present invention adopts the structural design of the sealing tube and the adjusting mechanism, so that the device can seal the ends of circular through tubes with different aperture sizes, which is conducive to forming detection holes with different apertures. When the specifications of the circular through tube change, the internal sealing area can change accordingly, thereby achieving the effect of multiple detection and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the cutaway structure of the circular through pipe of the present invention; Figure 3 It is a schematic diagram of the connection structure of the first connection cavity column and the second connection cavity column of the present invention; Figure 4 It is a schematic diagram of the connection structure of the small-diameter depth expansion column and the displacement force transmission column of the present invention; Figure 5 It is a schematic diagram of the connection structure between the plugging cylinder and the end guide cylinder of the present invention; Figure 6 It is a schematic diagram of the connection structure between the end guide cylinder and the first connection surface plate of the present invention; Figure 7 It is a schematic diagram of the connection structure of the supporting plate and the docking square rod of the present invention; Figure 8 It is a schematic diagram of the connection structure between the supporting plate and the first carrying leaf rod of the present invention; Fig. 9 It is a schematic diagram of the connection structure between the central force-applying column and the second carrying blade rod of the present invention; Fig.10 It is a schematic diagram of the connection structure between the first connection surface plate and the slide groove column of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1, bearing steel arch; 2, embedded plate; 3, hoop; 4, round through pipe; 5, plugging tube; 6, first connecting cavity column; 7, second connecting cavity column; 8, carrying casing; 9, small diameter depth expansion column; 10, transmission rod; 11, central gear; 12, guide gear; 13, transmission rod; 14, inner gear ring; 15, rotating head; 16, transmission roller; 17, guide spiral groove; 18, displacement force transmission column; 19, shaft To the limit groove; 20, connecting spring; 21, end guide cylinder; 22, the first connecting surface plate; 23, the slide column; 24, the second connecting surface plate; 25, the support plate; 26, the first carrying leaf rod; 27, the docking square rod; 28, the first force guide support rod; 29, the first one-eighth truncated cone rubber cavity block; 30, the center force column; 31, the second carrying leaf rod; 32, the second force guide support rod; 33, the second one-eighth truncated cone rubber cavity block. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] Example 1 Reference Figure 1-4 A detection hole reservation device based on primary branch tunnel detection includes a load-bearing steel arch frame 1, and an inner plate 2 fixed on one side of the load-bearing steel arch frame 1, one side of the inner plate 2 is equipped with a reserved hole mechanism, the reserved hole mechanism includes a sleeve 3, a circular through pipe 4 and a blocking tube 5, sleeves 3 are fixed at both ends of one side of the inner plate 2, a circular through pipe 4 is arranged on the inner side of the two sleeves 3, a blocking tube 5 is penetrated on the inner side of the circular through pipe 4, and an end expansion mechanism is arranged on the inner side of the blocking tube 5.

[0023] The end expansion mechanism includes a guide assembly and a transmission assembly. A first connecting cavity column 6 is fixed to one end of the sealing tube 5, and a second connecting cavity column 7 is fixed to the end of the first connecting cavity column 6 away from the sealing tube 5. A guide assembly is installed between the second connecting cavity column 7 and the first connecting cavity column 6, and a transmission assembly is installed on the inner side of the guide assembly.

[0024] The guide assembly includes a carrying sleeve 8, a small diameter depth expansion column 9, a transmission rod 10, a central gear 11, a guide gear 12, a transmission rod 13 and an inner gear ring 14. The end of the second connecting cavity column 7 away from the first connecting cavity column 6 is threadedly connected to the carrying sleeve 8, and the inner side of the carrying sleeve 8 is slidably connected to the small diameter depth expansion column 9. One end of the first connecting cavity column 6 is rotatably connected to the transmission rod 10, and one end of the transmission rod 10 is fixed with a central gear 11. The top and bottom of the central gear 11 are meshed and connected with the guide gear 12 A transmission rod 13 is fixed on one side of the guide gear 12, and one end of the transmission rod 13 is rotatably connected to the inner side of the first connecting cavity column 6. An inner gear ring 14 is fixed to one end of the inner side of the first connecting cavity column 6, and the guide gear 12 is meshed with the inner gear ring 14. When the transmission rod 10 rotates, the transmission rod 10 drives the central gear 11 to rotate, and then the displacement force transmission column 18 drives the small diameter depth expansion column 9 to move along the inner side of the axial limit groove 19, so that the small diameter depth expansion column 9 extends from the inner side of the circular through tube 4.

[0025] The transmission assembly includes a rotating head 15, a transmission roller 16, a guide spiral groove 17, a displacement force transmission column 18 and a connecting spring 20. The rotating head 15 is fixed to one side of the inner gear ring 14, and the rotating head 15 is rotatably connected to the second connecting cavity column 7. A transmission roller 16 is fixed to one end of the rotating head 15. A guide spiral groove 17 is provided on the outer side of the transmission roller 16. The inner side of the guide spiral groove 17 is slidably connected with a displacement force transmission column 18. The displacement force transmission column 18 is fixed to the small diameter depth expansion column 9. The bottom of the displacement force transmission column 18 is slidably connected to the carrying sleeve 8. A connecting spring 20 is fixed to one end of the inner side of the small diameter depth expansion column 9. One end of the connecting spring 20 is fixed to the transmission roller 16. When the sealing tube 5 is pulled out of the circular through pipe 4, the elastic force generated by the connecting spring 20 pushes the transmission roller 16, so that multiple components automatically rebound, so that the small diameter depth expansion column 9 shrinks into the carrying sleeve 8.

[0026] An axial limit groove 19 corresponding to the position of the displacement force transmission column 18 is opened at the bottom of the inner side of the carrying sleeve 8. The axial limit groove 19 is slidingly connected to the displacement force transmission column 18. Through the setting of the axial limit groove 19, a guiding function can be provided for the movement of the displacement force transmission column 18.

[0027] Example 2 Embodiment 1 is further optimized, specifically, as Figure 5-10 As shown, an end guide cylinder 21 is fixed to one end of the plugging cylinder 5 , and an adjustment mechanism is installed on the inner side of the end guide cylinder 21 .

[0028] The adjustment mechanism includes a primary movable component and a secondary movable component. A first connecting surface disc 22 is fixed to one end of the end guide cylinder 21, a slide column 23 is fixed to the inner side of the first connecting surface disc 22, and a second connecting surface disc 24 is fixed to one end of the slide column 23. A primary movable component and a secondary movable component are assembled between the slide column 23 and the first connecting surface disc 22. A plurality of transverse grooves are arranged on the outer side of the slide column 23 to provide guidance for the first carrying leaf rod 26 and the second carrying leaf rod 31.

[0029] The primary movable component includes a supporting plate 25, a first carrying leaf rod 26, a docking square rod 27, a first force guiding support rod 28 and a first one-eighth truncated cone rubber cavity block 29. Four first carrying leaf rods 26 are evenly distributed and slidably connected on the outer side of the slide column 23. A supporting plate 25 is fixed at one end of the four first carrying leaf rods 26. A docking square rod 27 is fixed at the side of the supporting plate 25 away from the first carrying leaf rod 26. The supporting plate 25 corresponds to the position of the first connecting surface plate 22. One end of the first carrying leaf rod 26 away from the supporting plate 25 is rotatably connected to two first force guiding support rods 28. One end of the two first force guiding support rods 28 located on the same first carrying leaf rod 26 is rotatably connected to a first one-eighth truncated cone rubber cavity block 29. The first one-eighth truncated cone rubber cavity block 29 is in close contact with the end guide cylinder 21. When it is necessary to align When the inner side of the circular through pipe 4 with different apertures is blocked, the docking square rod 27 and the central force column 30 are pulled, so that the first carrying leaf rod 26 and the second carrying leaf rod 31 move along the inner side of the slide groove column 23. Since the first one-eighth truncated cone rubber cavity block 29 and the second carrying leaf rod 31 are both in contact with the end guide cylinder 21, under the guidance of the end of the end guide cylinder 21, the second force guide support rod 32 and the first force guide support rod 28 rotate, so that the first one-eighth truncated cone rubber cavity block 29 and the second carrying leaf rod 31 squeeze and contract each other, so that the truncated cone protrusion enclosed between the end guide cylinder 21 and the second connecting surface plate 24 continuously changes in size, thereby realizing the blocking of the circular through pipe 4 with different apertures. At the same time, one end of the docking square rod 27 and the central force column 30 are fixed to the end of the blocking cylinder 5 by screws.

[0030] The secondary movable assembly includes a central force column 30, a second carrying leaf rod 31, a second force guide support rod 32 and a second one-eighth truncated cone rubber cavity block 33. The inner side of the docking square rod 27 and the support plate 25 is slidably connected with a central force column 30. Four second carrying leaf rods 31 are fixed to one end of the central force column 30. The second carrying leaf rods 31 are all slidably connected to the chute column 23. One end of the four second carrying leaf rods 31 is rotatably connected to two second force guide support rods 32. The two second carrying leaf rods 31 on the same second carrying leaf rod 31 are connected to the second guide support rods 32. One end of the second force guiding support rod 32 is rotatably connected to a second one-eighth cone rubber cavity block 33, and the second one-eighth cone rubber cavity block 33 is in close contact with the end guide cylinder 21. When the central force applying column 30 is pulled, the central force applying column 30 can slide on the inner side of the docking square rod 27 and the supporting plate 25, so that the central force applying column 30 drives the second carrying leaf rod 31 to pull or push the second force guiding support rod 32, so that the second one-eighth cone rubber cavity block 33 changes position along the end of the end guide cylinder 21.

[0031] From the above, we can know that: The present invention is directed to the following technical problem: Although the existing technology can reserve the detection hole during use, the reserved tube has a single aperture size, so the detection surface that can be provided by the detection hole during detection is mostly of uniform size, and the inner surface of the detection hole with a larger aperture is mostly compacted and flattened compared to the detection hole with a small aperture, resulting in deviation in the detection result; the technical solutions of the above embodiments are adopted. At the same time, the implementation process of the above technical solution is: During use, after the tunnel excavation is completed, a plurality of bearing steel arch frames 1 are erected, and then the plugging cylinder 5 is inserted into the inner side of the circular through pipe 4. Since the plugging cylinder 5 matches the inner side size of the circular through pipe 4, the inner side of the circular through pipe 4 is blocked. Then, a portion of the transfer rod 10 in the plugging cylinder 5 is rotated, so that the transfer rod 10 drives the central gear 11 to rotate. Because the central gear 11 is meshed with the guide gear 12, the guide gear 12 is meshed with the inner gear ring 14, and the inner gear ring 14 is meshed with the rotating head 15. The rotating head 15 is fixed to the driving roller 16, the guide spiral groove 17 is slidably connected to the displacement force transmission column 18, and the displacement force transmission column 18 is slidably connected to the axial limit groove 19. Therefore, when the driving roller 16 rotates, under the guidance of the guide spiral groove 17, the displacement force transmission column 18 drives the small-diameter depth expansion column 9 to move along the inner side of the axial limit groove 19, so that the small-diameter depth expansion column 9 extends from the inner side of the circular through tube 4, and then the transfer rod 10 is fixed to the end of the plugging tube 5 by screws; After the concrete is sprayed, the sealing tube 5 is pulled out from the inside of the circular tube 4, leaving the circular tube 4 inside the concrete. The inner cavity of the circular tube 4 is the reserved detection hole in the concrete. At the same time, a detection hole with a smaller aperture is left at the original position of the small-diameter depth expansion column 9 in a part of the sealing tube 5, so as to facilitate the addition of subsequent detection sample points.

[0032] Through the above configuration, the present application can certainly solve the above technical problems and achieve the following technical effects: 1. The present invention adopts the structural design of the reserved hole mechanism and the end expansion mechanism, so that the device can leave detection holes of different apertures when reserving detection holes, which is convenient for increasing detection sample points, making the detection results more accurate and improving the flexibility of the device.

[0033] 2. The present invention adopts the structural design of the sealing tube 5 and the adjustment mechanism, so that the device can seal the ends of the circular through tubes 4 with different aperture sizes, which is conducive to forming detection holes with different apertures. When the specifications of the circular through tube 4 change, the internal sealing area can change accordingly, thereby achieving the effect of multiple detection and utilization.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A detection hole reservation device based on primary branch tunnel detection, characterized in that: The invention comprises a bearing steel arch frame (1), and an inner plate (2) fixed to one side of the bearing steel arch frame (1); one side of the inner plate (2) is equipped with a reserved hole mechanism, and the reserved hole mechanism comprises a sleeve (3), a circular through pipe (4) and a blocking tube (5); sleeves (3) are fixed to both ends of one side of the inner plate (2); a circular through pipe (4) is arranged on the inner side of the two sleeves (3); a blocking tube (5) is penetrated on the inner side of the circular through pipe (4); and an end expansion mechanism is arranged on the inner side of the blocking tube (5).

2. A detection hole reservation device based on primary branch tunnel detection according to claim 1, characterized in that: The end expansion mechanism comprises a guide assembly and a transmission assembly, a first connecting cavity column (6) is fixed to one end of the blocking tube (5), a second connecting cavity column (7) is fixed to the end of the first connecting cavity column (6) away from the blocking tube (5), a guide assembly is installed between the second connecting cavity column (7) and the first connecting cavity column (6), and a transmission assembly is installed on the inner side of the guide assembly.

3. A detection hole reservation device based on primary branch tunnel detection according to claim 2, characterized in that: The guide assembly comprises a carrying sleeve (8), a small diameter depth expansion column (9), a transmission rod (10), a central gear (11), a guide gear (12), a transmission rod (13) and an inner gear ring (14); one end of the second connecting cavity column (7) away from the first connecting cavity column (6) is threadedly connected to the carrying sleeve (8); the inner side of the carrying sleeve (8) is slidably connected to the small diameter depth expansion column (9); one end of the first connecting cavity column (6) is rotatably connected to the transmission rod (10); one end of the transmission rod (10) is fixed with a central gear (11); the top and bottom of the central gear (11) are meshedly connected to the guide gear (12); one side of the guide gear (12) is fixed with a transmission rod (13); one end of the transmission rod (13) is rotatably connected to the inner side of the first connecting cavity column (6); one end of the inner side of the first connecting cavity column (6) is fixed with an inner gear ring (14); and the guide gear (12) is meshedly connected to the inner gear ring (14).

4. A detection hole reservation device based on primary branch tunnel detection according to claim 3, characterized in that: The transmission assembly comprises a rotating head (15), a transmission roller (16), a guide spiral groove (17), a displacement force transmission column (18) and a connecting spring (20); a rotating head (15) is fixed to one side of the inner gear ring (14); the rotating head (15) is rotatably connected to the second connecting cavity column (7); a transmission roller (16) is fixed to one end of the rotating head (15); a guide spiral groove (17) is provided on the outer side of the transmission roller (16); a displacement force transmission column (18) is slidably connected to the inner side of the guide spiral groove (17); the displacement force transmission column (18) is fixed to the small diameter depth expansion column (9); the bottom of the displacement force transmission column (18) is slidably connected to the carrying sleeve (8); a connecting spring (20) is fixed to one end of the inner side of the small diameter depth expansion column (9); one end of the connecting spring (20) is fixed to the transmission roller (16).

5. The detection hole reservation device based on primary branch tunnel detection according to claim 4 is characterized in that: An axial limit groove (19) corresponding to the position of the displacement force transmission column (18) is provided at the bottom of the inner side of the carrying sleeve (8), and the axial limit groove (19) is slidably connected to the displacement force transmission column (18).

6. The detection hole reservation device based on primary branch tunnel detection according to claim 1 is characterized in that: An end guide cylinder (21) is fixed to one end of the blocking cylinder (5), and an adjustment mechanism is mounted on the inner side of the end guide cylinder (21).

7. A detection hole reservation device based on primary branch tunnel detection according to claim 6, characterized in that: The adjustment mechanism comprises a primary movable component and a secondary movable component, a first connecting surface plate (22) is fixed to one end of the end guide cylinder (21), a slide column (23) is fixed to the inner side of the first connecting surface plate (22), a second connecting surface plate (24) is fixed to one end of the slide column (23), and the primary movable component and the secondary movable component are assembled between the slide column (23) and the first connecting surface plate (22).

8. The detection hole reservation device based on primary branch tunnel detection according to claim 7 is characterized in that: The primary movable component comprises a supporting plate (25), a first carrying leaf rod (26), a docking square rod (27), a first force guiding rod (28) and a first one-eighth truncated cone rubber cavity block (29). Four first carrying leaf rods (26) are evenly distributed and slidably connected to the outer side of the slide groove column (23). A supporting plate (25) is fixed at one end of the four first carrying leaf rods (26). A docking square rod (27) is fixed at a side of the supporting plate (25) away from the first carrying leaf rod (26). The supporting plate (25) corresponds to the position of the first connecting surface plate (22). One end of the first carrying leaf rod (26) away from the supporting plate (25) is rotatably connected to two first force guiding rods (28). One end of the two first force guiding rods (28) located on the same first carrying leaf rod (26) is rotatably connected to a first one-eighth truncated cone rubber cavity block (29). The first one-eighth truncated cone rubber cavity block (29) is in close contact with the end guide cylinder (21).

9. A detection hole reservation device based on primary branch tunnel detection according to claim 8, characterized in that: The secondary movable assembly comprises a central force-applying column (30), a second carrying leaf rod (31), a second force-guiding support rod (32) and a second one-eighth truncated cone rubber cavity block (33); the inner sides of the docking square rod (27) and the support plate (25) are slidably connected to a central force-applying column (30); one end of the central force-applying column (30) is fixed with four second carrying leaf rods (31); the second carrying leaf rods (31) are slidably connected to the chute column (23); one end of the four second carrying leaf rods (31) are rotatably connected to two second force-guiding support rods (32); one end of two second force-guiding support rods (32) located on the same second carrying leaf rod (31) are rotatably connected to a second one-eighth truncated cone rubber cavity block (33); the second one-eighth truncated cone rubber cavity block (33) is in close contact with the end guide cylinder (21).

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