Tunnel measurement positioning support capable of being matched with tunnel inclination angle and flexibly adjusted

Abstract

The utility model discloses a tunnel measuring and positioning support capable of being matched with the tunnel inclination angle and flexibly adjusted, and relates to the technical field of tunnel measuring and positioning supports, the tunnel measuring and positioning support comprises a main frame, a through cavity is formed in the left side of the surface of the main frame, a movable plate is rotationally arranged on the inner surface of the through cavity, and the surface of the movable plate is in threaded connection with a screw rod in a penetrating mode; a connecting plate is rotatably arranged at the upper end of the screw rod, a mounting plate is rotatably arranged at the upper end of the connecting plate through a rotating shaft seat, gradienters are fixedly arranged on the front side and the rear side of the surface of the mounting plate, and the right end of the mounting plate is rotatably connected with the upper portion of the surface of the main frame. Compared with an existing common tunnel measurement positioning support, the tunnel measurement positioning support capable of being matched with the tunnel dip angle and flexibly adjusted has the advantages that after the matched tunnel dip angle is adjusted, the mounting plate can be adjusted to keep horizontal, so that a measurement tool is mounted in a horizontal state with a tunnel, and the measurement accuracy of a measurement device can be improved; and the accuracy of the measurement result is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel measurement and positioning brackets, in particular to a tunnel measurement and positioning bracket which can match the tunnel inclination and can be flexibly adjusted. Background Art

[0002] During the construction of hydraulic tunnels, the measurement and layout of buildings cannot be separated from the accurate positioning of measuring instruments. For example, the total station commonly used in tunnel construction provides great convenience for tunnel construction in terms of angle measurement, distance measurement, coordinate measurement, etc., and provides technical support for rapid construction while ensuring accurate measurement.

[0003] For example, the public document with application number 202320454157.6 discloses a tunnel measurement and positioning bracket. The utility model is simple to process and easy to use, which makes it convenient for workers to quickly bury control points. The bracket is sturdy and durable, the point damage rate is low, and the bracket is reusable. However, after the tunnel measurement and positioning bracket is adjusted as a whole according to the installation angle, the angles of the mounting plate and the support plate will match the angle of the tunnel edge, causing the mounting plate position of the bracket to be tilted to a certain extent, resulting in the measuring instrument being difficult to maintain a horizontal state with the tunnel when it is installed. This will greatly affect the accuracy and precision of the measurement data of the measuring device, and may affect the quality of the project.

[0004] Therefore, in view of this, the shortcomings of the existing structure are studied and improved, and a tunnel measurement positioning bracket that can be flexibly adjusted to match the tunnel inclination is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a tunnel measurement positioning bracket that can be flexibly adjusted to match the tunnel inclination, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel measurement and positioning bracket that can flexibly adjust to match the tunnel inclination, comprising a main frame, a through cavity is opened on the left side of the main frame surface, a movable plate is rotatably provided on the inner surface of the through cavity, a screw is threaded through the surface of the movable plate, a connecting plate is rotatably provided on the upper end of the screw, a mounting plate is rotatably provided on the upper end of the connecting plate through a rotating shaft seat, a spirit level is fixedly provided on the front and rear sides of the surface of the mounting plate, and the right end of the mounting plate is rotatably connected to the upper surface of the main frame.

[0007] Preferably, a sub-frame is provided on the inner side of the left end of the main frame, an upper assembly frame is provided on the inner side of the right end of the main frame, and a lower assembly frame is provided on the outer side of the lower end of the sub-frame.

[0008] Preferably, arc-shaped connectors are provided at the left and right ends of the main frame, the upper and lower ends of the auxiliary frame, and the left ends of the upper assembly frame and the lower assembly frame, and the assembly between the main frame, auxiliary frame, upper assembly frame and lower assembly frame is rotatably connected through the connectors.

[0009] Preferably, the connection head surfaces of the auxiliary frame and the upper assembly frame are provided with positioning holes evenly distributed around the rotation connection point, and the connection head surfaces of the main frame and the lower assembly frame are provided with locking pieces above the rotation connection point.

[0010] Preferably, the locking member comprises a locking pin which slides through the surface of the connecting head of the main frame and the lower assembly frame, a spring is fixedly mounted on the surface of the locking pin, and one end of the spring is fixedly connected to the surface of the connecting head.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This utility model utilizes a movable plate, screws, connecting plates, mounting plates, and a level gauge. After the positioning bracket is adjusted to match the tunnel inclination, the mounting plate can be adjusted to always remain horizontal, allowing the measuring tool to be installed in a level state with the tunnel, thereby improving the accuracy of the measurement device and significantly improving the accuracy of the measurement results.

[0013] 2. The utility model is equipped with a main frame, a connector, a sub-frame, an upper assembly frame, and a lower assembly frame. The main frame, the sub-frame, the upper assembly frame, and the lower assembly frame can all be rotated through the connector to adjust the angles between them, so that each can better adapt to the inclination angle of the tunnel wall for adaptive installation. The installation flexibility is higher and the practicality is stronger, which greatly improves the practicality and application range of the positioning bracket.

[0014] 3. The utility model can fix the rotation angle of each connector through the arrangement of positioning holes, locking parts, locking pins and springs, thereby fixing the adjustment positions between the main frame, sub-frame, upper assembly frame and lower assembly frame, and can effectively lock the adjustment angle of the positioning bracket to avoid secondary rotation, so that the adjustment angle of the positioning bracket changes and the use is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the main frame and mounting plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 4 This is a partial structural diagram of the connector of the utility model.

[0019] In the figure: 1. main frame; 2. through cavity; 3. movable plate; 4. screw; 5. connecting plate; 6. mounting plate; 7. level; 8. connector; 9. sub-frame; 10. upper assembly frame; 11. lower assembly frame; 12. positioning hole; 13. locking piece; 1301, locking pin; 1302, spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 3 As shown, a tunnel measurement and positioning bracket that can flexibly adjust to match the tunnel inclination angle includes a main frame 1, a through cavity 2 is opened on the left side of the surface of the main frame 1, a movable plate 3 is rotatably provided on the inner surface of the through cavity 2, a screw 4 is threadedly connected to the surface of the movable plate 3, a connecting plate 5 is rotatably provided on the upper end of the screw 4, and a mounting plate 6 is rotatably provided on the upper end of the connecting plate 5 through a rotating shaft seat, a spirit level 7 is fixedly provided on the front and rear sides of the surface of the mounting plate 6, and the right end of the mounting plate 6 is rotatably connected to the upper surface of the main frame 1.

[0022] By adopting the above technical solution, the screw rod 4 rotates, pushing the mounting plate 6 to rotate along the right end and lift the left end, so that the angle of the mounting plate 6 itself can be adjusted. After the positioning bracket is adjusted to match the inclination angle of the tunnel, the mounting plate 6 can be adjusted to always remain horizontal;

[0023] The movable plate 3 and the connecting plate 5 can rotate so that when the screw rod 4 pushes the mounting plate 6 to lift in an arc, the screw rod 4 can match the motion trajectory of the arc-shaped lifting of the mounting plate 6;

[0024] The level 7 enables a person to more intuitively judge whether the mounting plate 6 is currently leveled.

[0025] Furthermore, a sub-frame 9 is provided on the inner side of the left end of the main frame 1 , an upper assembly frame 10 is provided on the inner side of the right end of the main frame 1 , and a lower assembly frame 11 is provided on the outer side of the lower end of the sub-frame 9 .

[0026] By adopting the above technical solution, the upper assembly frame 10 and the lower assembly frame 11 can install and fix the position of the entire positioning bracket.

[0027] Furthermore, arc-shaped connecting heads 8 are provided at the left and right ends of the main frame 1, the upper and lower ends of the sub-frame 9, and the left ends of the upper assembly frame 10 and the lower assembly frame 11, and the assembly between the main frame 1, the sub-frame 9, the upper assembly frame 10 and the lower assembly frame 11 are all rotatably connected through the connecting heads 8.

[0028] By adopting the above technical solution, the main frame 1, the auxiliary frame 9, the upper assembly frame 10 and the lower assembly frame 11 can all be rotated through the connecting head 8 to adjust the angles between them so that each can better adapt to the inclination angle of the tunnel side wall for adaptive installation.

[0029] like Figure 1 and Figure 4 As shown, the surfaces of the connecting heads 8 of the sub-frame 9 and the upper assembly frame 10 are evenly distributed with positioning holes 12 around the rotating connection point, and the surfaces of the connecting heads 8 of the main frame 1 and the lower assembly frame 11 are provided with locking pieces 13 above the rotating connection point.

[0030] By adopting the above technical solution, the locking member 13 is used in conjunction with the positioning hole 12 to fix the angle of each adjusted connector 8.

[0031] Furthermore, the locking member 13 includes a locking pin 1301 that slides through the surface of the connector 8 of the main frame 1 and the lower assembly frame 11. A spring 1302 is fixedly installed on the surface of the locking pin 1301, and one end of the spring 1302 is fixedly connected to the surface of the connector 8.

[0032] By adopting the above technical solution, the locking pin 1301 is inserted into the positioning hole 12, so that the connector 8 cannot be rotated a second time, thereby avoiding a second rotation and changing the adjustment angle of the positioning bracket.

[0033] Working principle: When using the tunnel measurement positioning bracket that can flexibly adjust the inclination angle of the tunnel, first adjust the positioning bracket according to the inclination angle of the tunnel side wall, first pull the locking pin 1301 out of the positioning hole 12, and then each connector 8 can be rotated to adjust the angle. The main frame 1, the auxiliary frame 9, the upper assembly frame 10 and the lower assembly frame 11 can all be rotated through the connecting head 8 to adjust the angle between each other until the main frame 1, the auxiliary frame 9, the upper assembly frame 10 and the lower assembly frame 11 can perfectly fit the inclination angle of the tunnel side wall. After the angle is adjusted to the required position, release the locking pin 1301. Under the tension of the spring 1302, the locking pin 1301 will be pulled into the positioning hole 12 at the nearest corresponding point, thereby fixing the rotation angle of each connector 8, so that the main frame 1, the auxiliary frame 9, the upper assembly frame The adjustment position between 10 and the lower assembly frame 11 is fixed, and then the entire positioning bracket is fixed to the tunnel side wall through the upper assembly frame 10 and the lower assembly frame 11. After fixation, by rotating the screw 4, the movable plate 3 and the main frame 1 fixed point rotate, the screw 4 will extend upward, and then push the mounting plate 6 to rotate along the right end, and the left end is lifted. The mounting plate 6 is lifted to make an arc movement. The movable plate 3 and the connecting plate 5 can both rotate so that the screw 4 can match the motion trajectory of the arc-shaped lifting of the mounting plate 6. The mounting plate 6 can be adjusted up and down. Through the indication of the spirit level 7, the positioning bracket, after adjusting to match the tunnel inclination, the mounting plate 6 can be adjusted to always remain horizontal, so that the measuring tool installation and the tunnel remain horizontal. This is the working principle of the tunnel measurement positioning bracket that can match the tunnel inclination and be flexibly adjusted.

Claims

1. A tunnel measurement and positioning bracket capable of flexibly adjusting the tunnel inclination, comprising a main frame (1), characterized in that: A through cavity (2) is provided on the left side of the surface of the main frame (1), and a movable plate (3) is rotatably provided on the inner surface of the through cavity (2), and a screw rod (4) is threadedly connected to the surface of the movable plate (3), and a connecting plate (5) is rotatably provided on the upper end of the screw rod (4), and a mounting plate (6) is rotatably provided on the upper end of the connecting plate (5) through a rotating shaft seat, and a level (7) is fixedly provided on the front and rear sides of the surface of the mounting plate (6), and the right end of the mounting plate (6) is rotatably connected to the upper surface of the main frame (1).

2. The tunnel measurement and positioning bracket capable of flexibly adjusting the tunnel inclination according to claim 1, characterized in that: A sub-frame (9) is provided on the inner side of the left end of the main frame (1), an upper assembly frame (10) is provided on the inner side of the right end of the main frame (1), and a lower assembly frame (11) is provided on the outer side of the lower end of the sub-frame (9).

3. The tunnel measurement and positioning bracket capable of flexibly adjusting the tunnel inclination according to claim 1, characterized in that: The left and right ends of the main frame (1), the upper and lower ends of the auxiliary frame (9), and the left ends of the upper assembly frame (10) and the lower assembly frame (11) are all provided with arc-shaped connecting heads (8), and the main frame (1), the auxiliary frame (9), the upper assembly frame (10) and the lower assembly frame (11) are all rotatably connected through the connecting heads (8).

4. The tunnel measurement and positioning bracket capable of flexibly adjusting the tunnel inclination according to claim 3 is characterized in that: The surfaces of the connecting heads (8) of the auxiliary frame (9) and the upper assembly frame (10) are both provided with positioning holes (12) evenly distributed around the rotation connection point, and the surfaces of the connecting heads (8) of the main frame (1) and the lower assembly frame (11) are both provided with locking pieces (13) above the rotation connection point.

5. The tunnel measurement positioning bracket capable of flexibly adjusting the tunnel inclination according to claim 4 is characterized in that: The locking member (13) comprises a locking pin (1301) which is slidably arranged on the surface of the connecting head (8) of the main frame (1) and the lower assembly frame (11); a spring (1302) is fixedly installed on the surface of the locking pin (1301); and one end of the spring (1302) is fixedly connected to the surface of the connecting head (8).

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