Tunnel assembly type inverted arch construction surrounding rock pressure detection device

Abstract

The utility model belongs to the technical field of tunnel construction, and particularly relates to a tunnel assembly type inverted arch construction surrounding rock pressure detection device which comprises a transmission bin assembled on one side of a stand column in a sliding mode, a drill bit is assembled at the bottom of the transmission bin in a transmission mode, penetrating holes are symmetrically formed in the top of the drill bit in a penetrating mode, and a connecting ring is arranged at the top of the drill bit. Sealing plugs used for being movably clamped with the penetrating holes are fixedly connected to the two sides of the connecting ring, a transverse plate is fixedly connected to the side, away from the transmission bin, of the stand column, and rotating plates are symmetrically and rotationally connected to the two ends of the transverse plate in a damping mode. The sliding rod is close to the through hole formed in the top of the drill bit through rotation of the rotating plate, the core sample in the drill bit is pushed out by embedding the sliding rod into the through hole, the sampling process is rapid, convenient, time-saving and labor-saving, the drill bit does not need to be knocked to shake off the core sample, abrasion of knocking to the outer wall of the drill bit is avoided, and therefore the service life of the drill bit is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and in particular relates to a surrounding rock pressure detection device for tunnel assembled invert arch construction. Background Art

[0002] In mountainous areas, railway construction involves "drilling through mountains and building bridges across rivers," and tunnel projects account for an increasingly large proportion. As an important component of the tunnel lining structure, the inverted arch can improve the stress distribution of the lining structure and adjust the axial force and bending moment distribution of the supporting structure. It plays an important role in improving the bearing capacity, safety, and durability of the tunnel lining structure, inhibiting the expansion of the plastic zone in the surrounding rock, and restraining the development of displacement around the tunnel. Tubular tunnel inverted arches are extremely important to the tunnel lining structure, but during the actual construction of the inverted arch, construction quality control is difficult. Therefore, it is of great significance to select an appropriate pressure testing method to test the construction quality of the tunnel inverted arch. The commonly used methods for testing and evaluating the construction quality of tunnel inverted arches include geological radar and core drilling.

[0003] In the prior art, when performing quality inspections on inverted arches to understand the state of the surrounding rock, core sampling is usually performed at the intended coring location. The thickness of the tunnel inverted arch is detected by measuring the length of the core sample. The core sample is then cut and processed before undergoing a compression test. However, during coring, the core sample often becomes stuck inside the drill bit, requiring repeated tapping of the drill bit's outer wall to shake the core sample out. This is not only time-consuming and labor-intensive, but long-term tapping also accelerates wear of the drill bit's outer wall. Utility Model Content

[0004] The purpose of the utility model is to provide a surrounding rock pressure detection device for tunnel assembled invert arch construction. By rotating the rotating plate, the sliding rod is brought close to the through-hole opened on the top of the drill bit, and the core sample inside the drill bit is pushed out by embedding the sliding rod into the through-hole. The sampling process is quick and convenient, saving time and effort. There is no need to knock the drill bit to shake off the core sample, which avoids wear on the outer wall of the drill bit due to knocking, thereby extending the service life of the drill bit.

[0005] The technical solutions adopted by this utility model are as follows:

[0006] The cam is secured to the top of the drive shaft and has a locking mechanism which allows the cam to lock onto the drive shaft, the cam being secured to the top of the drive shaft when the cam is unlocked and the locking mechanism can be unlocked if the cam is unlocked.

[0007] The top of the sealing plug is fixedly connected with a pinching handle, and the middle of the rotating plate is provided with a second groove.

[0008] The middle part of the transverse plate is threadedly connected with a butterfly bolt, and the outer wall of one end of the butterfly bolt is rotatably connected with a buckle plate.

[0009] The two ends of the gusset plate are located on both sides of the transverse plate and are fixedly connected to the limiting plate 2.

[0010] The bottom of the gusset plate is located on one side of the rotating plate and is symmetrically fixedly connected to the limiting plate 1.

[0011] The outer walls on both sides of the transmission compartment are provided with a groove 1 for the sliding rod to slide into.

[0012] The technical effect achieved by the utility model is that the sliding rod is brought close to the through-hole opened on the top of the drill bit by rotating the rotating plate, and the core sample inside the drill bit is pushed out by embedding the sliding rod in the through-hole. The sampling process is quick and convenient, saving time and effort. There is no need to knock the drill bit to shake off the core sample, avoiding wear on the outer wall of the drill bit due to knocking, thereby extending the service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall appearance diagram of the pressure detection device provided in an embodiment of the present utility model;

[0014] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0015] Figure 3 This is a separate structural diagram showing the drill bit and the sliding rod provided in an embodiment of the present utility model;

[0016] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0018] 1. Column; 101. Transmission compartment; 102. Groove 1; 103. Drill bit; 104. Horizontal plate; 105. Rotating plate; 106. Groove 2; 107. Sliding rod; 108. Pressing column; 109. Handle; 110. Bump; 111. Buckle plate; 112. Limiting plate 1; 113. Limiting plate 2; 114. Butterfly bolt; 115. Through hole; 116. Connecting ring; 117. Pinch handle; 118. Sealing plug. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0020] like Figures 1-4 As shown, a tunnel assembled inverted arch construction surrounding rock pressure detection device includes a transmission compartment 101 slidably assembled on one side of a column 1, a bottom transmission assembly of the transmission compartment 101 is provided with a drill bit 103, a through-hole 115 is symmetrically opened on the top of the drill bit 103, a connecting ring 116 is provided on the top of the drill bit 103, and sealing plugs 118 for movably engaging with the through-hole 115 are fixedly connected on both sides of the connecting ring 116, and a pinching handle 117 is fixedly connected to the top of the sealing plug 118. The column 1 is located on the side away from the transmission compartment 101 and is fixedly connected to a horizontal plate 104. The two ends of the horizontal plate 104 are symmetrically connected to a rotating plate 105 for damping rotation. A groove 106 is opened in the middle of the rotating plate 105, and a sliding rod 107 is slidably engaged with one end of the rotating plate 105. A handle 109 is fixedly connected to one side of the top of the movable rod 107, and a pressing column 108 is elastically and telescopically connected to the top of the sliding rod 107. A protrusion 110 is telescopically connected to the inside of the pressing column 108 and located below the rotating plate 105. The pressing column 108 and the protrusion 110 are movably engaged with the inside of the sliding rod 107. A butterfly bolt 114 is threadedly connected to the middle part of the horizontal plate 104, and a buckle plate 111 is rotatably connected to the outer wall of one end of the butterfly bolt 114. The two ends of the buckle plate 111 and the two sides of the horizontal plate 104 are fixedly connected to the limiting plate 2 113, and the bottom of the buckle plate 111 and the one side of the rotating plate 105 are symmetrically fixedly connected to the limiting plate 112. The outer walls of both sides of the transmission compartment 101 are provided with a groove 102 for the sliding rod 107 to slide and embed.

[0021] According to the above structure, after the drill bit 103 drills and samples, the groove 102 is slid upward along the column 1 so that the top of the drill bit 103 is slightly lower than the rotating plate 105, and the butterfly bolt 114 is rotated to drive the buckle plate 111 to move upward. The limit plate 112 and the limit plate 2 113 are no longer engaged with the rotating plate 105. The rotating plate 105 is rotated so that one side is attached to the column 1. At this time, the groove 2 106 is located at the junction of the transmission chamber 101 and the drill bit 103. The pressing column 108 is pressed to retract the protrusion 110 into the sliding rod 107. The sliding rod 107 is lifted upward by the handle 109. The sliding rod 107 moves upward along the groove 102, and the handle 109 is temporarily hung on the top of the transmission chamber 101. The sealing plug 11 is tightened by pulling the pinch handle 117. 8 is taken out from the through-hole 115, and the connecting ring 116 is rotated to make the sealing plug 118 misaligned with the through-hole 115. At this time, the sliding rod 107 is slid downward to align it with the through-hole 115 and then embedded in the drill bit 103, so that the core sample inside the drill bit 103 can be pushed out, and the sealing plug 118 can seal the through-hole 115 to prevent mud and slurry residue from entering the drill bit 103; the utility model rotates the rotating plate 105 to make the sliding rod 107 close to the through-hole 115 opened at the top of the drill bit 103, and the core sample inside the drill bit 103 is pushed out by the sliding rod 107 being embedded in the through-hole 115. The sampling process is quick and convenient, saving time and effort. There is no need to knock the drill bit 103 to shake off the core sample, which avoids the wear of the outer wall of the drill bit 103 caused by knocking, thereby extending the service life of the drill bit 103.

[0022] The working principle of the present invention is as follows: after the drill bit 103 drills and samples, the groove 102 slides upward along the column 1, so that the top of the drill bit 103 is slightly lower than the rotating plate 105, and the butterfly bolt 114 is rotated to drive the buckle plate 111 to move upward. The limit plate 112 and the limit plate 2 113 are no longer engaged with the rotating plate 105, and the rotating plate 105 is rotated to make one side fit the column 1. At this time, the groove 2 106 is located at the junction of the transmission compartment 101 and the drill bit 103, and the pressing column 108 is pressed to retract the protrusion 110 into the sliding rod 107. By turning Hand 109 lifts up the sliding rod 107, and the sliding rod 107 moves up along the groove 102, and the handle 109 is temporarily hung on the top of the transmission compartment 101. The sealing plug 118 is taken out from the through-hole 115 by pulling the pinch handle 117, and the connecting ring 116 is rotated to make the sealing plug 118 misaligned with the through-hole 115. At this time, the sliding rod 107 is slid downward to align it with the through-hole 115 and then embedded in the drill bit 103, so that the core sample inside the drill bit 103 can be pushed out. The sealing plug 118 can seal the through-hole 115 to prevent mud and slurry from entering the drill bit 103.

[0023] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A device for detecting surrounding rock pressure during tunnel assembly inverted arch construction, comprising a transmission chamber (101) slidably assembled on one side of a column (1), characterized in that: The bottom transmission assembly of the transmission bin (101) is provided with a drill bit (103), the top of the drill bit (103) is symmetrically penetrated with a through hole (115), the top of the drill bit (103) is provided with a connecting ring (116), both sides of the connecting ring (116) are fixedly connected with sealing plugs (118) for movably engaging with the through hole (115), the column (1) is located on the side away from the transmission bin (101) and is fixedly connected with a transverse plate (104), the two ends of the transverse plate (104) are symmetrically damped. A rotating plate (105) is movably connected to the rotating plate (105), and a sliding rod (107) is slidably engaged at one end of the rotating plate (105). A handle (109) is fixedly connected to one side of the top of the sliding rod (107). A pressing column (108) is elastically and telescopically connected to the top of the sliding rod (107). A protrusion (110) is telescopically connected inside the pressing column (108) and below the rotating plate (105). The pressing column (108) and the protrusion (110) are movably engaged inside the sliding rod (107).

2. The device for detecting surrounding rock pressure during tunnel prefabricated invert arch construction according to claim 1, characterized in that: A pinch handle (117) is fixedly connected to the top of the sealing plug (118), and a second groove (106) is provided in the middle of the rotating plate (105).

3. The device for detecting surrounding rock pressure during tunnel prefabricated invert arch construction according to claim 1, characterized in that: A butterfly bolt (114) is threadedly connected to the middle portion of the transverse plate (104), and an outer wall of one end of the butterfly bolt (114) is rotatably connected to a buckle plate (111).

4. The device for detecting surrounding rock pressure during tunnel prefabricated invert arch construction according to claim 3, characterized in that: The two ends of the gusset plate (111) and the two sides of the transverse plate (104) are fixedly connected to the second limiting plate (113).

5. The device for detecting surrounding rock pressure during tunnel prefabricated invert construction according to claim 3, characterized in that: The bottom of the buckle plate (111) is symmetrically fixedly connected to a limiting plate (112) on one side of the rotating plate (105).

6. The device for detecting surrounding rock pressure during tunnel prefabricated invert arch construction according to claim 1, characterized in that: The outer walls on both sides of the transmission compartment (101) are provided with a groove (102) for the sliding rod (107) to slide and embed.

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