Magnetic type image control point mark

Abstract

The utility model discloses a magnetic type image control point mark, which comprises a fixing component, a connecting seat and an image control board, the fixing component is connected in tunnel concrete, the connecting seat is detachably connected on the fixing component, and the image control board is magnetically adsorbed on the connecting seat. The device has the advantages of simplicity and convenience in mounting and dismounting and reusability.

Description

TECHNICAL FIELD

[0001] The utility model relates to remote sensing measurement technical field especially relates to a magnetic attraction formula image control point sign. BACKGROUND

[0002] Photogrammetry operation needs to provide image control point sign with certain size and color characteristics in the tunnel.

[0003] At present, the method is fixed by welding small steel plates with reinforcing bars, pasting reflectors on the steel plates, and finally hammering the reinforcing bars into the concrete by drilling holes on the tunnel surface. The sign installed by this method can only be used once, and the sign cannot be reused, and the cutting operation workload is large and the work efficiency is low. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide a magnetic attraction type image control point sign which is easy to install and disassemble and can be reused.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A magnetic attraction type image control point sign, comprising a fixing assembly, a connecting seat and an image control plate, the fixing assembly is connected in the tunnel concrete, the connecting seat is detachably connected on the fixing assembly, and the image control plate is magnetically attracted on the connecting seat.

[0007] As a further improvement of the above technical scheme:

[0008] The fixing assembly comprises a screw rod, an expansion pipe and a nut, the expansion pipe is sleeved on the screw rod, the nut is threadedly connected at the front end of the screw rod, and the connecting seat is sleeved on the nut.

[0009] The diameter of the tail end of the screw rod is larger than that of the front end, and the tail end of the expansion pipe is forced to expand and engage with the tunnel concrete by rotating the nut.

[0010] The connecting seat is provided with a groove matched with the nut.

[0011] The back surface of the image control plate is provided with a strong magnetic block magnetically attracted to the connecting seat.

[0012] The strong magnetic block is provided with a magnetic pin, and the connecting seat is provided with a pin groove matched with the magnetic pin.

[0013] The number of the magnetic pins is at least two.

[0014] A T-shaped lead screw is further included, one of the pin grooves is a threaded hole, and the T-shaped lead screw is provided with a thread matched with the threaded hole.

[0015] Compared with the prior art, the magnetic attraction type image control point mark has the advantages that

[0016] The magnetic attraction type image control point mark has the advantages that BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a structural schematic view of the utility model.

[0018] Fig. 2 is a structural schematic view (another perspective) of the utility model.

[0019] Fig. 3 is an application schematic view of the utility model.

[0020] The various reference numerals in the drawings represent:

[0021] 1, fixed assembly; 11, screw rod; 12, pipe expansion; 13, nut; 2, connecting seat; 21, recess; 22, pin slot; 3, image control plate; 31, strong magnetic block; 311, magnetic pin; 4, T-shaped lead screw; 100, tunnel concrete. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail below in combination with the drawings and specific embodiments.

[0023] As Figs. 1 to 3 shown, the magnetic attraction type image control point mark of the embodiment comprises a fixed assembly 1, a connecting seat 2 and an image control plate 3, the fixed assembly 1 is connected in tunnel concrete 100, the connecting seat 2 is detachably connected on the fixed assembly 1, and the image control plate 3 is magnetically adsorbed on the connecting seat 2. When using, first, the fixed assembly 1 is installed in the tunnel concrete 100, then the connecting seat 2 is connected on the fixed assembly 1, finally the image control plate 3 is installed on the connecting seat 2 by the magnetic attraction mode, compared with the traditional tunnel image control point arrangement device, since the connecting seat 2 and the fixed assembly 1 are detachably connected, cutting and removing are not needed in the later period, and the connecting seat 2 and the image control plate 3 are convenient to install and detach and can be repeatedly used.

[0024] In the embodiment, the fixing assembly 1 comprises a screw rod 11, an expansion pipe 12 and a nut 13, the expansion pipe 12 is sleeved on the screw rod 11, the nut 13 is threadedly connected to the front end of the screw rod 11, the connecting seat 2 is sleeved on the nut 13, the diameter of the tail end of the screw rod 11 is larger than that of the front end, and the tail end of the expansion pipe 12 is forced to be expanded and engaged with the tunnel concrete 100 by rotating the nut 13. During installation, a hole is drilled on the tunnel surface, and then the screw rod 11 is hammered into the tunnel concrete 100, the connecting seat 2 is connected to the nut 13 in a sleeving mode, and the installation and dismounting operation is simple and convenient, the screw rod 11 is moved by rotating the nut 13 by a wrench, and the tail end of the expansion pipe 12 is forced to be expanded by the tail end of the screw rod 11, at this time, the expansion pipe 12 is engaged with the hole wall and anchored in the tunnel concrete 100, and the connection is stable and reliable.

[0025] In the embodiment, the connecting seat 2 is provided with a groove 21 matched with the nut 13, and the back surface of the image control plate 3 is provided with a strong magnetic block 31 magnetically attracted to the connecting seat 2. In the structure, the connecting seat 2 is provided as a metal seat, and specifically, the groove 21 is provided as an internal hexagonal groove 21 matched with the nut 13, and the connection is stable after the two are sleeved; the image control plate 3 is magnetically connected to the metal connecting seat 2 through the strong magnetic block 31, and the connection is stable and not easy to fall off.

[0026] In the embodiment, the strong magnetic block 31 is provided with a magnetic pin 311, and the connecting seat 2 is provided with a pin groove 22 matched with the magnetic pin 311. In the structure, the magnetic pin 311 is connected to the pin groove 22, and the connection strength is further enhanced.

[0027] In the embodiment, the number of the magnetic pins 311 is two. In the structure, the two magnetic pins 311 are arranged to avoid rotation of the image control plate 3.

[0028] In the embodiment, a T-shaped lead screw 4 is further included, one of the pin grooves 22 is provided as a threaded hole, and the T-shaped lead screw 4 is provided with a thread matched with the threaded hole. In the structure, the T-shaped lead screw 4 is convenient to hold, and when dismounting, the connecting seat 2 is pulled out through the threaded connection between the T-shaped lead screw 4 and the pin groove 22, and the operation is simple and convenient.

[0029] Although the utility model has disclosed as above with preferred embodiments, however, it is not used to limit the utility model. Any skilled person in the art, without departing from the technical scheme range of the utility model, can utilize the above disclosed technical content to make many possible changes and modifications to the utility model technical scheme, or modify as equivalent changes and equivalent embodiments. Therefore, any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the utility model should fall within the protection range of the utility model technical scheme.

Claims

1. A magnetic grommet, characterized in that: The utility model relates to a tunnel image control device, including fixed component (1), connecting seat (2) and image control board (3), fixed component (1) is connected in tunnel concrete (100), connecting seat (2) is detachably connected on fixed component (1), image control board (3) is magnetically adsorbed on connecting seat (2).

2. The magnetic grommet of claim 1, wherein: The fixed component (1) includes a screw rod (11), an expansion tube (12) and a nut (13), the expansion tube (12) is sleeved on the screw rod (11), and the nut (13) is threadedly connected to the front end of the screw rod (11), and the connecting seat (2) is sleeved on the nut (13).

3. The magnetic image control point marker of claim 2, wherein: The diameter of the end of the screw rod (11) is greater than that of the front end, and the end of the expansion tube (12) is expanded and forced to engage with the tunnel concrete (100) by rotating the nut (13).

4. The magnetic image control point marker of claim 3, wherein: The connecting seat (2) is provided with a groove (21) matched with the nut (13).

5. The magnetic image control point marker of claim 4, wherein: The image control board (3) is provided with a strong magnetic block (31) on the back surface thereof, which is magnetically attracted to the connecting seat (2).

6. The magnetic image control point marker of claim 5, wherein: The strong magnetic block (31) is provided with a magnetic pin (311), and the connecting seat (2) is provided with a pin groove (22) matched with the magnetic pin (311).

7. The magnetic image control point marker of claim 6, wherein: The number of the magnetic pins (311) is at least two.

8. The magnetic grommet of claim 7, wherein: A T-shaped lead screw (4) is further included, one of the pin grooves (22) is provided as a threaded hole, and the T-shaped lead screw (4) is provided with a thread matched with the threaded hole.

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