Measurement point protection device for construction site

Abstract

The utility model provides a measuring point protection device for a construction site, and relates to the field of measuring point protection devices.The measuring point protection device for the construction site comprises a protective cover, clamping devices are arranged on the two opposite sides of the top of the protective cover, a supporting rod is fixedly installed at the bottom of the protective cover, and a driving device is movably arranged on the supporting rod in a sleeved mode; when the driving device moves upwards along the supporting rod, the two clamping devices get close to each other, according to the measuring point protection device for the construction site, by rotating the rotating ring, the rotating ring drives the moving ring to move, the moving ring drives the two supporting frames to move, through the movement of the two supporting frames, the supporting frames extrude the moving plate, and therefore the measuring point protection device is convenient to use. When the protective cover is installed, the pressure spring is compressed, the measuring rod at the measuring point is extruded by the two flexible pads, so that the protective cover is installed at the measuring point, and when the protective cover is installed, the multiple movable plates stretch out and draw back to different degrees under the extrusion of the tunnel arc-shaped structure, and the gap between the protective cover and the tunnel of the arc-shaped structure is reduced.

Description

Technical Field

[0001] The utility model relates to the field of measuring point protection devices, in particular to a measuring point protection device used at a construction site. Background Art

[0002] A tunnel is an underground passage, mainly used for traffic, such as road tunnels, railway tunnels, but also for pedestrians, bicycles or special purposes. They are usually built under mountains, underwater or underground in cities to cross obstacles such as mountains, rivers or densely built areas, reduce the impact on ground traffic and the environment, and improve transportation efficiency. The construction of tunnels requires complex engineering technology and safety measures to ensure stability and safety during excavation and use.

[0003] Practice has proved that after tunnel excavation, the inherent structure of the rock mass is destroyed, the resistance between blocks is weakened, the deformation is relaxed, the stress of the tunnel surrounding rock is redistributed, the radial stress around the tunnel is released, and a plastic zone is formed in the surrounding rock. On the one hand, the stress is continuously transferred to the deep part of the surrounding rock, and on the other hand, it is continuously deformed in the direction of the tunnel and the stress of the plastic zone is gradually relieved. This deformation in the direction of the tunnel generally develops rapidly within 24 hours after blasting, and the deformation dynamic data in the initial stage of surrounding rock excavation occupies a very important position in the entire deformation process. Therefore, it is required that the measuring points need to be installed as soon as possible and the initial readings should be obtained before the next ring of blasting. In order to make the initial readings reflect the deformation value more realistically, the measuring points are required to be buried and the initial readings are read as soon as possible.

[0004] After the measuring point is installed, the end part of the measuring point is located on the outside of the tunnel wall. The blasting debris on the tunnel face may hit the measuring point. When the initial support shotcrete is carried out, the sprayed concrete is easy to cover the measuring point, which seriously affects the normal detection of the measuring point. In addition, during the tunnel construction process, the measuring point may also be damaged.

[0005] Therefore, it is necessary to provide a new measuring point protection device for construction sites to solve the above technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a measuring point protection device for use at a construction site.

[0007] The utility model provides a measuring point protection device for construction sites, comprising a protective cover, wherein clamping devices are arranged on opposite sides of the top of the protective cover, a support rod is fixedly mounted on the bottom of the protective cover, a driving device is arranged on a movable sleeve on the support rod, and when the driving device moves upward along the support rod, the two clamping devices approach each other.

[0008] Preferably, the driving device includes a moving ring, a rotating ring and two support frames in an L-shaped structure, wherein the moving ring and the rotating ring are both mounted on the support rod, wherein the rotating ring is threadedly connected to the support rod, the rotating ring is rotatably connected to the moving ring, and the two support frames are respectively fixedly connected to both sides of the moving ring, and the top of the support frame is an inclined surface.

[0009] Preferably, the clamping device includes a fixed frame, a movable plate and an elastic member, the fixed frame is fixedly mounted on the protective cover, the movable plate is movably inserted into the inner side of the fixed frame, the elastic member is arranged on the side wall of the movable plate, the end of the movable plate away from the center of the protective cover is an inclined surface, and the inclined surface of the movable plate is in contact with the inclined surface of the support frame.

[0010] Preferably, the elastic member includes a side plate and a compression spring, one end of the side plate is fixedly connected to the side wall of the movable plate, and the other end of the side plate is arranged in a placement groove opened on the inner wall of the fixed frame, and both ends of the compression spring are respectively fixedly connected to the side plate and the inner wall of the placement groove.

[0011] Preferably, one end of the movable plate close to the center of the protective cover is fixedly connected to a clamping plate, and a flexible pad is fixedly connected to the side wall of the clamping plate.

[0012] Preferably, a guide plate is fixedly connected to the side wall of the support frame, and one end of the guide plate is movably disposed in a groove provided in the side wall of the protective cover.

[0013] Preferably, grooves are provided on both sides of the protective cover, a plurality of springs are fixedly connected in the grooves of the protective cover, a movable plate is fixedly connected to the tops of the plurality of springs, and the plurality of movable plates in the grooves of the protective cover are fitted in sequence.

[0014] Preferably, a groove is provided at the bottom of the support rod, and a magnet is fixedly mounted on the bottom wall of the groove of the support rod. A supporting device is provided at the groove of the support rod, and an iron sheet is fixedly mounted on the end of the supporting device.

[0015] Preferably, the supporting device includes a supporting column, an insert block, a rotating disk and a plurality of insert rods, the insert block is fixedly connected to the top side wall of the supporting column, the size of the bottom groove of the support rod is adapted to the size of the supporting column and the insert block, the threaded sleeve of the rotating disk is arranged on the supporting column, the plurality of insert rods are respectively fixedly connected to the rotating disk, the bottom of the rotating ring is provided with a plurality of grooves for moving the plurality of insert rods into, and a handle is fixedly mounted on the bottom of the supporting column.

[0016] Preferably, two marking points are provided on the support column, and a marking line is provided on the rotating disk.

[0017] Compared with the related art, the construction site measuring point protection device provided by the utility model has the following beneficial effects:

[0018] Rotating the rotating ring causes the moving ring to move, and the moving ring causes the two support frames to move. Through the movement of the two support frames, the support frames squeeze the moving plate, the compression spring is compressed, and the measuring rod of the measuring point is squeezed through the two flexible pads, thereby completing the installation of the protective cover at the measuring point, facilitating the protection work of the measuring point.

[0019] When the protective cover is installed, the multiple movable plates expand and contract to different degrees under the pressure of the curved structure of the tunnel, and the springs connected thereto are compressed to different degrees. Through the multiple movable plates, the device can better fit the surface of the curved tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a first embodiment of a measuring point protection device for a construction site provided by the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of a cross-sectional view of the structure shown Figure 1 ;

[0022] Figure 3 for Figure 1 An exploded structural schematic diagram of the clamping device shown;

[0023] Figure 4 for Figure 1 A schematic diagram of a cross-sectional view of the structure shown Figure 2 ;

[0024] Figure 5 for Figure 1 The schematic diagram of the structure of the protective cover shown;

[0025] Figure 6 A structural schematic diagram of a second embodiment of a measuring point protection device for a construction site provided by the utility model;

[0026] Figure 7 for Figure 6 A schematic structural diagram of the supporting device shown.

[0027] Numbers in the figure: 1. Protective cover; 2. Support rod; 3. Moving ring; 4. Rotating ring; 5. Support frame; 6. Fixed frame; 7. Moving plate; 8. Clamping plate; 9. Flexible pad; 10. Guide plate; 11. Movable plate; 12. Spring; 13. Placement slot; 14. Support column; 15. Rotating disk; 16. Insert rod; 17. Insert block; 18. Marking point; 19. Marking line; 20. Magnet; 21. Iron sheet; 22. Handle; 23. Side panel; 24. Compression spring. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0029] In the specific implementation process, Embodiment 1

[0030] like Figure 1-Figure 5 As shown, it includes a protective cover 1, and clamping devices are arranged on both sides of the top of the protective cover 1. A support rod 2 is fixedly installed at the bottom of the protective cover 1. A driving device is movably sleeved on the support rod 2. When the driving device moves upward along the support rod 2, the two clamping devices approach each other; the driving device includes a moving ring 3, a rotating ring 4 and two support frames 5 with an L-shaped structure. The moving ring 3 and the rotating ring 4 are both sleeved on the support rod 2, wherein the rotating ring 4 is threadedly connected to the support rod 2, and the rotating ring 4 is rotatably connected to the moving ring 3. The two support frames 5 are respectively fixedly connected to the two sides of the moving ring 3, and the top of the support frame 5 The part is an inclined surface, the clamping device includes a fixed frame 6, a movable plate 7 and an elastic member, the fixed frame 6 is fixedly installed on the protective cover 1, the movable plate 7 is movably inserted into the inner side of the fixed frame 6, the side wall of the movable plate 7 is provided with an elastic member, the end of the movable plate 7 away from the center of the protective cover 1 is an inclined surface, the inclined surface of the movable plate 7 is in contact with the inclined surface of the support frame 5, the elastic member includes a side plate 23 and a compression spring 24, one end of the side plate 23 is fixedly connected to the side wall of the movable plate 7, the other end of the side plate 23 is arranged in the placement groove 13 opened on the inner wall of the fixed frame 6, and the two ends of the compression spring 24 are respectively fixedly connected to the side plate 23 and the placement groove 13 inner wall, one end of the movable plate 7 close to the center of the protective cover 1 is fixedly connected with a clamping plate 8, and a flexible pad 9 is fixedly connected to the side wall of the clamping plate 8, and the flexible pad 9 can be a rubber pad. A guide plate 10 is fixedly connected to the side wall of the support frame 5, and one end of the guide plate 10 is movably arranged in a groove provided in the side wall of the protective cover 1. The rotating ring 4 is rotated so that the rotating ring 4 drives the movable ring 3 to move, and the movable ring 3 drives the two support frames 5 to move. Through the movement of the two support frames 5, the support frame 5 squeezes the movable plate 7, and the compression spring 24 is compressed, and the measuring point is squeezed through the two flexible pads 9. Rod, thereby completing the installation of the protective cover 1 at the measuring point, which is convenient for the protection work of the measuring point. Grooves are opened on both sides of the protective cover 1. Multiple springs 12 are fixedly connected in the grooves of the protective cover 1. The tops of the multiple springs 12 are fixedly connected with movable plates 11. The multiple movable plates 11 in the grooves of the protective cover 1 are fitted in sequence. When the protective cover 1 is installed, the multiple movable plates 11 are extended and retracted to varying degrees under the extrusion of the arc structure of the tunnel, and the springs 12 connected thereto are compressed to varying degrees. Through the multiple movable plates 11 that can be moved, the device can better fit the surface of the arc tunnel. Embodiment 2

[0031] On the basis of the first embodiment, a groove is provided at the bottom of the support rod 2, and a magnet 20 is fixedly installed on the bottom wall of the groove of the support rod 2, a supporting device is provided at the groove of the support rod 2, and an iron sheet 21 is fixedly installed at the end of the supporting device. The supporting device includes a support column 14, an insert block 17, a rotating disk 15 and a plurality of insert rods 16. The top side wall of the support column 14 is fixedly connected with the insert block 17. The size of the bottom groove of the support rod 2 is adapted to the size of the support column 14 and the insert block 17. The threaded sleeve of the rotating disk 15 is arranged on the support column 14, and the plurality of insert rods 16 are respectively fixedly connected to the rotating disk 15. A plurality of grooves for moving in the plurality of insert rods 16 are provided at the bottom of the rotating ring 4, and a handle 22 is fixedly installed at the bottom of the support column 14. Two marking points 18 are arranged on the support column 14, and a plurality of insert rods 16 are respectively fixedly connected to the rotating disk 15. Marking line 19, if the required layout position is higher, the support column 14 and the plug block 17 can be inserted into the groove at the bottom of the support rod 2, the magnet 20 and the iron sheet 21 are adsorbed together, and multiple plug rods 16 are moved to the groove of the movable ring 3. At this time, the marking line 19 on the rotating disk 15 is facing the marking point 18 below. Then, the rotating disk 15 is rotated, and the rotating disk 15 drives the plug rod 16 to rotate, and the plug rod 16 drives the rotating ring 4 to rotate, thereby realizing the movement of the two movable plates 7 approaching each other. When the marking line 19 on the rotating disk 15 is facing the marking point 18 above, stop rotating. At this time, the installation of the protective cover 1 is completed. The setting of the marking line 19 and the marking point 18 is conducive to the rotation of the rotating disk 15 to the corresponding position, so that the plug rod 16 can correspond to the groove at the bottom of the rotating ring 4.

[0032] The working principle of the utility model is as follows: when the device is used, if the required deployment position is low, the protective cover 1 is covered at the measuring point, so that the two fixed frames 6 are in contact with the inner wall of the tunnel. When the protective cover 1 is installed, the multiple movable plates 11 are extended and retracted to different degrees under the extrusion of the tunnel arc structure, and the springs 12 connected thereto are compressed. Then, the rotating ring 4 is rotated, so that the rotating ring 4 drives the moving ring 3 to move, and the moving ring 3 drives the two support frames 5 to move. Through the movement of the two support frames 5, the support frames 5 are The movable plate 7 is squeezed, the compression spring 24 is compressed, and the measuring rod of the measuring point is squeezed through the two flexible pads 9, so that the protective cover 1 is installed at the measuring point. If the required layout position is higher, the support column 14 and the plug block 17 can be inserted into the groove at the bottom of the support rod 2, the magnet 20 and the iron sheet 21 are adsorbed together, and the multiple plug rods 16 are moved into the groove of the movable ring 3. At this time, the identification line 19 on the rotating disk 15 is facing the identification point 18 below. Then, the rotating disk 15 is rotated, and the rotating disk 15 drives the plug rod 16 to rotate, and the plug rod 16 The rotating ring 4 is driven to rotate, thereby realizing the movement of the two moving plates 7 approaching each other. When the marking line 19 on the rotating disk 15 is facing the marking point 18 above, the rotation is stopped. At this time, the installation of the protective cover 1 is completed. When the protective cover 1 is disassembled, the rotating ring 4 is rotated in the opposite direction, so that the rotating ring 4 drives the moving ring 3 to move downward, thereby causing the support frame 5 to move downward, and the moving plate 7 moves in the direction away from the protective cover 1 under the action of the compression spring 24, thereby realizing the disassembly of the device. Similarly, the disassembly method in Example 2 can be obtained, the rotating disk 15 is rotated in the opposite direction, so that the rotating disk 15 drives the insertion rod 16 to rotate, and the rotation of the rotating ring 4 is driven by the insertion rod 16, thereby realizing the disassembly work. In this device, the same supporting device can be used to realize the installation and disassembly of multiple protective covers 1, and when spraying concrete, secondary spraying concrete can be carried out. After the first spraying of concrete is completed, the protective cover 1 is disassembled and the protective cover 1 is cleaned. After that, the protective cover 1 is installed at the measuring point again, and secondary spraying of concrete is carried out, and it is removed again for cleaning and standby. With the protection of this protection device, the monitoring point is sprayed with concrete support more than twice, the monitoring point is not covered or buried, and the damage to the monitoring point by external force is also avoided, so that the detection can be carried out effectively.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A measuring point protection device for a construction site, characterized in that: The protective cover (1) comprises clamping devices on opposite sides of the top of the protective cover (1), a support rod (2) is fixedly mounted on the bottom of the protective cover (1), a driving device is movable on the support rod (2), and when the driving device moves upward along the support rod (2), the two clamping devices approach each other.

2. The measuring point protection device for construction site according to claim 1, characterized in that: The driving device comprises a moving ring (3), a rotating ring (4) and two L-shaped support frames (5), wherein the moving ring (3) and the rotating ring (4) are both sleeved on the support rod (2), wherein the rotating ring (4) is threadedly connected to the support rod (2), and the rotating ring (4) is rotatably connected to the moving ring (3), and the two support frames (5) are respectively fixedly connected to two sides of the moving ring (3), and the top of the support frame (5) is an inclined surface.

3. The measuring point protection device for construction site according to claim 2, characterized in that: The clamping device comprises a fixed frame (6), a movable plate (7) and an elastic member, wherein the fixed frame (6) is fixedly mounted on the protective cover (1), the movable plate (7) is movably inserted into the inner side of the fixed frame (6), the elastic member is arranged on the side wall of the movable plate (7), and one end of the movable plate (7) away from the center of the protective cover (1) is an inclined surface, and the inclined surface of the movable plate (7) is in contact with the inclined surface of the support frame (5).

4. The measuring point protection device for construction site according to claim 3, characterized in that: The elastic member comprises a side plate (23) and a compression spring (24); one end of the side plate (23) is fixedly connected to the side wall of the movable plate (7); the other end of the side plate (23) is arranged in a placement groove (13) provided on the inner wall of the fixed frame (6); and two ends of the compression spring (24) are respectively fixedly connected to the side plate (23) and the inner wall of the placement groove (13).

5. The measuring point protection device for construction site according to claim 4, characterized in that: One end of the movable plate (7) close to the center of the protective cover (1) is fixedly connected to a clamping plate (8), and a flexible pad (9) is fixedly connected to the side wall of the clamping plate (8).

6. The measuring point protection device for construction site according to claim 5, characterized in that: A guide plate (10) is fixedly connected to the side wall of the support frame (5), and one end of the guide plate (10) is movably arranged in a groove formed in the side wall of the protective cover (1).

7. The measuring point protection device for construction site according to claim 6, characterized in that: The protective cover (1) has grooves on both sides, a plurality of springs (12) are fixedly connected in the grooves of the protective cover (1), a movable plate (11) is fixedly connected to the tops of the plurality of springs (12), and the plurality of movable plates (11) in the grooves of the protective cover (1) are fitted in sequence.

8. The measuring point protection device for construction site according to claim 7, characterized in that: The bottom of the support rod (2) is provided with a groove, and a magnet (20) is fixedly mounted on the bottom wall of the groove of the support rod (2). A supporting device is provided at the groove of the support rod (2), and an iron sheet (21) is fixedly mounted on the end of the supporting device.

9. The measuring point protection device for construction site according to claim 8, characterized in that: The support device comprises a support column (14), an insert block (17), a rotating disk (15) and a plurality of insert rods (16); the insert block (17) is fixedly connected to the top side wall of the support column (14); the size of the bottom groove of the support rod (2) is adapted to the size of the support column (14) and the insert block (17); the threaded sleeve of the rotating disk (15) is arranged on the support column (14); the plurality of insert rods (16) are respectively fixedly connected to the rotating disk (15); the bottom of the rotating ring (4) is provided with a plurality of grooves for respectively inserting the plurality of insert rods (16); and the bottom of the support column (14) is fixedly mounted with a handle (22).

10. The measuring point protection device for construction site according to claim 9, characterized in that: Two marking points (18) are provided on the support column (14), and a marking line (19) is provided on the rotating disk (15).

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