Tunnel system anchor rod rapid positioning device

Abstract

A tunnel system anchor rod rapid positioning device comprises a bearing base, a supporting rod, a connecting tray, a mounting plate, a semicircular graduated scale and a plurality of laser pointing pens, the supporting rod is vertically connected to the upper side of the bearing base, the connecting tray is connected to the upper end of the supporting rod, the mounting plate is connected to the upper side of the connecting tray, and the semicircular graduated scale is embedded in one side of the mounting plate. The multiple laser pointing pens are circumferentially distributed on one side of the semicircular calibrated scale, one ends of the multiple laser pointing pens point to the circle center of the semicircular calibrated scale, and the output ends of the multiple laser pointing pens point to installation point positions of the system anchor rod. According to the design, a connecting structure of the semicircular graduated scale and the laser pointing pens is adopted, the laser pointing pens can emit lasers, the lasers can point to specific point positions of the anchor rods, the point positions of the system anchor rods can be determined in cooperation with the angles of the semicircular graduated scale, and meanwhile the multiple laser pointing pens are arranged and can point to multiple system anchor rods at the same time; therefore, quick point distribution can be realized, the overall lofting time is greatly shortened, and the precision is high.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a rapid positioning device for anchor bolts in tunnel systems. Background Technology

[0002] Tunnel system anchors are one of the most common and effective structures for tunnels to cope with adverse geological conditions. Therefore, the construction quality of system anchors is directly related to the stability of the entire tunnel structure. The measurement and positioning of the borehole position before drilling is the key to ensuring that the system anchors are well fixed and play a stable supporting role.

[0003] In traditional anchor bolt location methods, because there are often a large number of anchor bolts in a tunnel, it is necessary to use surveying instruments to lay out each point one by one in order to ensure the anchor bolt spacing. To ensure the accuracy of the points, the larger the tunnel cross section, the longer the overall layout time, resulting in a large amount of work. At the same time, because the tunnel arch is horizontally arc-shaped, the measurement error is large and the hole location is not accurate enough, thus affecting the subsequent construction quality. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and problems of low positioning efficiency and poor positioning accuracy of existing systems anchor bolts, and to provide a rapid positioning device for tunnel system anchor bolts with high positioning efficiency and good positioning accuracy.

[0005] To achieve the above objectives, the technical solution of this utility model is: a rapid positioning device for anchor bolts in a tunnel system, comprising a support base, a support rod, a connecting tray, a mounting plate, a semi-circular scale, and multiple laser pointers. The support base is horizontally arranged, the support rod is vertically connected to the upper side of the support base, the connecting tray is connected to the upper end of the support rod, the mounting plate is vertically connected to the upper side of the connecting tray, the semi-circular scale is embedded in one side of the mounting plate, the number of laser pointers is the same as the number of system anchor bolts, the multiple laser pointers are circumferentially distributed on one side of the semi-circular scale, one end of each laser pointer points to the center of the semi-circular scale, and the output ends of each laser pointer point to the installation point of the multiple system anchor bolts.

[0006] The support rod includes a fixed sleeve and a sliding rod. The fixed sleeve is vertically connected to the upper side of the support base. The lower end of the sliding rod is slidably connected to the upper end of the fixed sleeve. The upper end of the sliding rod is connected to the lower side of the connecting tray. A fixing component for fixing the sliding rod is installed on the outer circumferential surface of the fixed sleeve.

[0007] The fixing assembly includes a fixing bolt and a nut. The fixing bolt is radially threaded to the side wall of the fixing sleeve, and the bottom end of the fixing bolt abuts against the outer peripheral surface of the slide rod. The nut is threaded to the fixing bolt and one side is connected to the outer peripheral surface of the fixing sleeve.

[0008] The connecting tray has a square tube cross-section, and a slot is provided on the upper side of the connecting tray along the vertical direction. The mounting plate is inserted into the connecting tray through the slot, and a limiting component for fixing the mounting plate is installed on the outside of the connecting tray.

[0009] The limiting component includes a connecting bolt, and threaded holes are provided on both the front and rear sides of the connecting tray. The connecting bolt is threadedly connected to the threaded holes and the mounting plate.

[0010] Multiple laser pointers are connected to one side of the semi-circular scale via clips.

[0011] The buckle includes a first elastic retaining ring, which is connected to one side of the semi-circular scale. The first elastic retaining ring has a notch, and its inner diameter is smaller than the outer diameter of the laser pointer.

[0012] Two second elastic retaining rings are symmetrically connected at the notch of the first elastic retaining ring. The two second elastic retaining rings together form a fan-shaped ring structure, and the outer diameter of the fan-shaped ring structure is smaller than the outer diameter of the first elastic retaining ring.

[0013] Both the first and second elastic retaining rings are made of plastic.

[0014] A horizontal bubble is connected to the upper side of the mounting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. In this utility model, a rapid positioning device for anchor bolts in a tunnel system utilizes a connection structure between a semi-circular scale and a laser pointer. The laser pointer emits a laser beam, allowing the laser to be directed to the specific location of the anchor bolt. Combined with the angle of the semi-circular scale, the location of the anchor bolt can be accurately determined. Multiple laser pointers can be used simultaneously to point to multiple anchor bolts, enabling rapid positioning and significantly reducing the overall layout time. Therefore, this utility model offers high positioning efficiency and good positioning accuracy.

[0017] 2. In this utility model, a rapid positioning device for tunnel system anchor bolts utilizes a fixed sleeve and a sliding rod. The sliding rod can slide up and down within the fixed sleeve, thereby adjusting the elevation of the horizontal line at the center of the semicircular scale relative to the ground. This ensures the elevation matches the elevation of the lowest anchor bolt in the tunnel cross-section, improving the positioning accuracy of the system anchor bolts. Furthermore, this positioning device is applicable to tunnels of different diameters. After sliding, the sliding rod is fixed within the fixed sleeve by fixing bolts, and further reinforced with nuts. Therefore, this utility model has a wide range of applications and high structural stability.

[0018] 3. In this utility model of a rapid anchor bolt positioning device for a tunnel system, the mounting plate is connected to the connecting tray via a plug-in connection, facilitating installation and disassembly; the mounting plate and connecting tray are fixed together by connecting bolts, resulting in good fixation; by setting a level bubble, the entire positioning device can be adjusted to ensure it is level, thereby improving the positioning accuracy. Therefore, this utility model is easy to install and disassemble, and has good positioning accuracy.

[0019] 4. In this utility model's rapid anchor bolt positioning device for tunnel systems, a first elastic retaining ring allows a laser pointer to be mounted onto a semi-circular scale using a snap-fit ​​connection, facilitating disassembly and providing good fixation. A second elastic retaining ring acts as a transition, preventing the laser pointer from directly contacting the notch of the first elastic retaining ring, which would shorten its lifespan. Therefore, this utility model is convenient to use and highly reliable. Attached Figure Description

[0020] Figure 1 This is a front view schematic diagram of this utility model.

[0021] Figure 2 This is a side view of the present invention.

[0022] Figure 3 This is a partial cross-sectional view of the support rod and fixing assembly in this utility model.

[0023] Figure 4 This is a partial cross-sectional view of the connecting tray, limiting component, and mounting plate in this utility model.

[0024] Figure 5 This is a cross-sectional view of the connecting tray and mounting plate in this utility model.

[0025] Figure 6 This is a schematic diagram of the connecting tray in this utility model.

[0026] Figure 7 This is a schematic diagram of the buckle structure in this utility model.

[0027] In the diagram: 1. Support base; 2. Support rod; 21. Fixing sleeve; 22. Slide rod; 3. Fixing component; 31. Fixing bolt; 32. Nut; 4. Connecting tray; 41. Slot; 42. Threaded hole; 5. Mounting plate; 6. Limiting component; 61. Connecting bolt; 7. Semicircular scale; 8. Laser pointer; 9. Buckle; 91. First elastic retaining ring; 92. Notch; 93. Second elastic retaining ring; 10. Horizontal bubble. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1:

[0030] See Figures 1 to 2 A rapid positioning device for anchor bolts in a tunnel system includes a support base 1, a support rod 2, a connecting tray 4, a mounting plate 5, a semi-circular scale 7, and multiple laser pointers 8. The support base 1 is horizontally arranged, the support rod 2 is vertically connected to the upper side of the support base 1, the connecting tray 4 is connected to the upper end of the support rod 2, the mounting plate 5 is vertically connected to the upper side of the connecting tray 4, the semi-circular scale 7 is embedded in one side of the mounting plate 5, the number of laser pointers 8 is the same as the number of system anchor bolts, the multiple laser pointers 8 are circumferentially distributed on one side of the semi-circular scale 7, one end of each laser pointer 8 points to the center of the semi-circular scale 7, and the output ends of each laser pointer 8 point to the installation points of the multiple system anchor bolts respectively. A horizontal bubble 10 is connected to the upper side of the mounting plate 5.

[0031] In this embodiment, the support base 1 is made of a 3cm thick circular steel plate, the laser pointer 8 is a push-switch type laser pointer, and the mounting plate 5 is made of acrylic sheet.

[0032] During positioning, firstly, the installation angle of the laser pointer 8 in the device is determined according to the position of the system anchor bolts in the tunnel cross-section drawings. Specifically, the center of the positioning device is used as a reference, its position corresponds to the tunnel centerline, and its elevation corresponds to the elevation of the anchor bolt closest to the ground in the same cross-section. Then, the laser pointer is placed on the device at the designed angle according to the anchor bolt spacing. Next, the assembled device is placed on the measured and positioned tunnel centerline, and the entire positioning device is adjusted to be level using the level bubble 10. Finally, the laser pointer 8 is turned on, and the point pointing to the surrounding rock is the specific anchor bolt location, ultimately achieving the goal of rapid positioning.

[0033] Through testing, the positioning device determined the points on the tunnel sidewalls and arch rock surfaces without error after positioning, fully meeting the normal anchor spacing requirements and ensuring quality. Compared with traditional methods, where workers may become resistant due to long waiting times, indirectly lowering quality standards, the use of this positioning device greatly improves worker enthusiasm and achieves the goal of ensuring work quality and process quality.

[0034] Example 2:

[0035] The basic content is the same as in Example 1, except that:

[0036] See Figures 1 to 3 The support rod 2 includes a fixed sleeve 21 and a sliding rod 22. The fixed sleeve 21 is vertically connected to the upper side of the support base 1. The lower end of the sliding rod 22 is slidably connected to the upper end of the fixed sleeve 21. The upper end of the sliding rod 22 is connected to the lower side of the connecting tray 4. A fixing assembly 3 for fixing the sliding rod 22 is installed on the outer peripheral surface of the fixed sleeve 21. The fixing assembly 3 includes a fixing bolt 31 and a nut 32. The fixing bolt 31 is radially threaded to the side wall of the fixed sleeve 21. The bottom end of the fixing bolt 31 is connected to the outer peripheral surface of the sliding rod 22. The nut 32 is threaded to the fixing bolt 31 and one side abuts against the outer peripheral surface of the fixed sleeve 21.

[0037] In this embodiment, both the fixed sleeve 21 and the sliding rod 22 are made of 2mm seamless steel pipe. The fixed bolts 31 and nuts 32 can be ordinary types. The connection between the fixed sleeve 21 and the support base 1 is welded, the connection between the sliding rod 22 and the connecting tray 4 is welded, and the connection between the nut 32 and the fixed sleeve 21 is welded. During positioning, the elevation of the horizontal line where the center of the semicircular scale 7 is located and the ground is adjusted by the length of the sliding rod 22 entering the fixed sleeve 21, so that its elevation is consistent with the elevation of the lowest anchor rod of the system anchor rod in this section. At this time, the movable sliding rod 22 is fixed in the fixed sleeve 21 by the fixed bolts 31 and nuts 32, thus completing the adjustment of the height of the support rod 2.

[0038] Example 3:

[0039] The basic content is the same as in Example 1, except that:

[0040] See Figures 4 to 6The connecting tray 4 has a square tube cross-section. A slot 41 is provided on the upper side of the connecting tray 4 in the vertical direction. The mounting plate 5 is inserted into the connecting tray 4 through the slot 41. A limiting component 6 for fixing the mounting plate 5 is installed on the outer side of the connecting tray 4. The limiting component 6 includes a connecting bolt 61. Threaded holes 42 are provided on both the front and rear sides of the connecting tray 4. The connecting bolt 61 is threadedly connected to the threaded holes 42 and the mounting plate 5.

[0041] In this embodiment, the connecting tray 4 is a square steel pipe with a wall thickness of 2mm, and the connecting bolts 61 are ordinary bolts with a diameter of 5mm. There are two connecting bolts 61. Two mounting holes are opened on the mounting plate 5. The two connecting bolts 61 are located on the same horizontal plane. During installation, the mounting plate 5 is first inserted into the corresponding slot 41, and the two mounting holes of the mounting plate 5 are aligned with the threaded holes 42 respectively. Then, the two connecting bolts 61 are screwed into the threaded holes 42 in sequence to connect and fix the mounting plate 5 and the connecting tray 4.

[0042] Example 4:

[0043] The basic content is the same as in Example 1, except that:

[0044] See Figure 7 Multiple laser pointers 8 are connected to one side of the semicircular scale 7 via clips 9. Each clip 9 includes a first elastic retaining ring 91 connected to one side of the semicircular scale 7. The first elastic retaining ring 91 has a notch 92. The inner diameter of the first elastic retaining ring 91 is smaller than the outer diameter of the laser pointer 8. Two second elastic retaining rings 93 are symmetrically connected at the notch 92 of the first elastic retaining ring 91. The two second elastic retaining rings 93 together form a fan-shaped annular structure. The outer diameter of the fan-shaped annular structure is smaller than the outer diameter of the first elastic retaining ring 91. Both the first elastic retaining ring 91 and the second elastic retaining ring 93 are made of plastic.

[0045] In this embodiment, the first elastic retaining ring 91 and the semi-circular scale 7 are connected and fixed by adhesive. When installing the laser pointer 8, the laser pointer 8 and the second elastic retaining ring 93 are first aligned with the axis of the fan-shaped structure. Then, the laser pointer 8 is pushed, and the second elastic retaining ring 93 is displaced and deformed outward, which in turn causes the first elastic retaining ring 91 to deform. When the laser pointer 8 passes through the notch 92 and enters the first elastic retaining ring 91, the first elastic retaining ring 91 resets and locks the laser pointer 8 to achieve connection and fixation.

Claims

1. A rapid positioning device for anchor bolts in a tunnel system, characterized in that: The system includes a support base (1), a support rod (2), a connecting tray (4), a mounting plate (5), a semicircular scale (7), and multiple laser pointers (8). The support base (1) is horizontally arranged, the support rod (2) is vertically connected to the upper side of the support base (1), the connecting tray (4) is connected to the upper end of the support rod (2), the mounting plate (5) is vertically connected to the upper side of the connecting tray (4), the semicircular scale (7) is embedded in one side of the mounting plate (5), the number of laser pointers (8) is the same as the number of system anchors, the laser pointers (8) are circumferentially distributed on one side of the semicircular scale (7), one end of each laser pointer (8) points to the center of the semicircular scale (7), the output end of each laser pointer (8) points to the installation point of the multiple system anchors, and a horizontal bubble (10) is connected to the upper side of the mounting plate (5). The connecting tray (4) has a square tube cross section. A slot (41) is provided on the upper side of the connecting tray (4) in the vertical direction. The mounting plate (5) is inserted into the connecting tray (4) through the slot (41). A limiting component (6) for fixing the mounting plate (5) is installed on the outside of the connecting tray (4). The limiting component (6) includes a connecting bolt (61). Threaded holes (42) are provided on both the front and rear sides of the connecting tray (4). The connecting bolt (61) is threadedly connected to the threaded hole (42) and the mounting plate (5). Multiple laser pointers (8) are connected to one side of the semicircular scale (7) by buckles (9). The buckle (9) includes a first elastic retaining ring (91), which is connected to one side of the semicircular scale (7). The first elastic retaining ring (91) has a notch (92), and the inner diameter of the first elastic retaining ring (91) is smaller than the outer diameter of the laser pointer (8).

2. The rapid positioning device for anchor bolts in a tunnel system according to claim 1, characterized in that: The support rod (2) includes a fixed sleeve (21) and a sliding rod (22). The fixed sleeve (21) is vertically connected to the upper side of the support base (1). The lower end of the sliding rod (22) is slidably connected to the upper end of the fixed sleeve (21). The upper end of the sliding rod (22) is connected to the lower side of the connecting tray (4). A fixing component (3) for fixing the sliding rod (22) is installed on the outer circumferential surface of the fixed sleeve (21).

3. The rapid positioning device for anchor bolts in a tunnel system according to claim 2, characterized in that: The fixing component (3) includes a fixing bolt (31) and a nut (32). The fixing bolt (31) is radially threaded to the side wall of the fixing sleeve (21). The bottom end of the fixing bolt (31) abuts against the outer peripheral surface of the slide rod (22). The nut (32) is threaded to the fixing bolt (31) and one side is connected to the outer peripheral surface of the fixing sleeve (21).

4. The rapid positioning device for anchor bolts in a tunnel system according to claim 1, characterized in that: Two second elastic retaining rings (93) are symmetrically connected at the notch (92) of the first elastic retaining ring (91). The two second elastic retaining rings (93) together form a fan-shaped ring structure. The outer diameter of the fan-shaped ring structure is smaller than the outer diameter of the first elastic retaining ring (91).

5. A rapid positioning device for anchor bolts in a tunnel system according to claim 4, characterized in that: The first elastic retaining ring (91) and the second elastic retaining ring (93) are both made of plastic.

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