Detachable forced centering measuring device for tunnel measurement

Abstract

The utility model relates to the technical field of layout of shield tunnel wire control points, in particular to a detachable forced centering measuring device for tunnel measurement, which comprises a first steel plate, a second steel plate is welded on one side of the outer surface of the first steel plate, and lifting lugs are welded on the upper side and the lower side of the second steel plate. Reinforcing supporting legs are arranged on the two sides of the bottom of the first steel plate, one ends of the two reinforcing supporting legs are fixedly connected with the second steel plate, a base disc plate is welded to the top of the first steel plate, and a centering bolt is arranged at the top of the base disc plate. Through the lifting lugs, when the device is installed, the two lifting lugs are arranged in the upper bolt and the lower bolt in the inner wall of the tunnel in a sleeved mode and fixed through the nuts, then the total station and the prism base are arranged on the centering bolt, then normal work can be achieved, and after centering measurement work is finished, the total station and the prism base are detached, and then the total station and the prism base are fixed through the nuts. And the device can be detached by screwing out the bolts for fixing the lifting lugs, so that the aim of detaching the device is fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field of the layout of shield tunnel wire control points, in particular to a detachable forced centering measurement device for tunnel measurement. Background Technique

[0002] The layout of shield tunnel wire control points is a key step, which directly affects the accuracy and safety of tunnel construction. In order to improve the centering accuracy and measurement convenience, a forced centering bracket can be installed near the maximum span of the segment. The size and shape of these brackets should be well controlled so that they can be directly installed on the bolts of the segment without the need to drill holes for installation.

[0003] The existing forced centering measurement device for tunnel wire control does not have a detachable structure, resulting in the inability to remove the centering measurement device in time after the wire layout is completed, affecting other work in the tunnel. Based on the existing technical deficiencies, the utility model designs a detachable forced centering measurement device for tunnel measurement. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a detachable forced centering measurement device for tunnel measurement, which has the advantage of being detachable for the centering measurement device.

[0005] The utility model provides the following technical solution: A detachable forced centering measurement device for tunnel measurement, including a first steel plate, a second steel plate is welded on one side of the outer surface of the first steel plate, lifting lugs are welded on the upper and lower sides of the second steel plate, reinforcing legs are arranged on both sides of the bottom of the first steel plate, one ends of the two reinforcing legs are fixedly connected with the second steel plate, a base plate is welded on the top of the first steel plate, and centering bolts are arranged on the top of the base plate.

[0006] As a preferred technical solution of the utility model, the included angle between the first steel plate and the second steel plate is 83.108°, and the included angle between the first steel plate and the reinforcing leg is 35.731°.

[0007] As a preferred technical solution of the utility model, the included angle between the second steel plate and the reinforcing leg is 61.161°.

[0008] As a preferred technical solution of the utility model, the included angle between the upper lifting lug and the reinforcing leg is 137.737°, and the included angle between the lower lifting lug and the reinforcing leg is 136.175°.

[0009] As a preferred technical solution of the utility model, the length of the first steel plate is 40 cm, and the length of the second steel plate is 40 cm.

[0010] As a preferred technical solution of the utility model, the length of the lifting ear is 12 cm, and the length of the reinforcement leg is 33 cm.

[0011] As a preferred technical solution of the utility model, a groove is opened inside the base plate, and three fixing holes are opened on the outer surface of the base plate. The internal threads of the three fixing holes are connected with threaded rods, and a turning handle is installed at one end of the three threaded rods. A transparent dust cover is placed in the inner groove of the base plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. A detachable forced centering measuring device for tunnel measurement, through the lifting ears, when installing the device, by putting two lifting ears into two upper and lower bolts in the inner wall of the tunnel, fixing them by nuts, and then setting the total station and the prism base on the centering bolts, and then it can work normally. After the centering measurement work is completed, the total station and the prism base are removed, and the bolts fixing the lifting ears are unscrewed to remove the device, thereby achieving the purpose of detachable device;

[0014] 2. A detachable forced centering measuring device for tunnel measurement uses a transparent dust cover. When the total station is working, the transparent dust cover is stuck in the groove of the base plate, and then the handle is rotated in sequence to move the threaded rod forward inside the base plate to support and fix the transparent dust cover, thereby preventing the lens of the total station from being contaminated by dust when it is working. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the centering bolt structure of the utility model;

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

[0018] Figure 4 This is a schematic diagram of the structure of the turning handle of the utility model.

[0019] In the figure: 1. first steel plate; 2. second steel plate; 3. lifting ear; 4. reinforcing leg; 5. base plate; 6. centering bolt; 7. fixing hole; 8. threaded rod; 9. turning handle; 10. transparent dust cover. DETAILED DESCRIPTION

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , a detachable forced centering measurement device for tunnel measurement, including a first steel plate 1, characterized in that: on one side of the outer surface of the first steel plate 1, a second steel plate 2 is welded, lifting lugs 3 are welded on the upper and lower sides of the second steel plate 2, reinforcing legs 4 are arranged on both sides of the bottom of the first steel plate 1, one end of the two reinforcing legs 4 is fixedly connected to the second steel plate 2, a base plate 5 is welded on the top of the first steel plate 1, and centering bolts 6 are arranged on the top of the base plate 5.

[0022] Please refer to Figures 1-3 , the included angle between the first steel plate 1 and the second steel plate 2 is 83.108°, and the included angle between the first steel plate 1 and the reinforcing leg 4 is 35.731°. The included angle between the second steel plate 2 and the reinforcing leg 4 is 61.161°. The included angle between the upper lifting lug 3 and the reinforcing leg 4 is 137.737°, and the included angle between the lower lifting lug 3 and the reinforcing leg 4 is 136.175°. The length of the first steel plate 1 is 40 cm, and the length of the second steel plate 2 is 40 cm. The length of the lifting lug 3 is 12 cm, and the length of the reinforcing leg 4 is 33 cm.

[0023] By sleeving the two lifting lugs 3 on the two bolts up and down on the inner wall of the tunnel and fixing them with nuts, and then setting the total station and the prism base on the centering bolts 6, normal work can be carried out subsequently.

[0024] Please refer to Figure 2 and Figure 4 , a groove is opened inside the base plate 5, three fixing holes 7 are opened on the outer surface of the base plate 5, threaded rods 8 are threadedly connected inside the three fixing holes 7, a turning handle 9 is installed at one end of the three threaded rods 8, and a transparent dust-proof cover 10 is placed in the inner groove of the base plate 5.

[0025] When the total station is working, by clamping the transparent dust-proof cover 10 in the groove of the base plate 5, and then sequentially rotating the turning handle 9 to make the threaded rod 8 move forward inside the base plate 5 to hold and fix the transparent dust-proof cover 10, the lens of the total station can be prevented from being contaminated by dust during work.

[0026] Working principle: When a detachable forced centering measurement device for tunnel measurement is in use, in the initial state, first, put two lifting lugs 3 on two bolts on the upper and lower inner walls of the tunnel and fix them with nuts. Subsequently, set the total station and the prism base on the centering bolt 6. Then, clamp the transparent dust cover 10 in the slot of the base plate 5. Subsequently, rotate the turning handle 9 in sequence to make the threaded rod 8 move forward inside the base plate 5 to hold the transparent dust cover 10 in place, thereby preventing the lens of the total station from being contaminated by dust during operation. Finally, after the centering measurement work is completed, after removing the total station and the prism base, unscrew the bolts fixing the lifting lugs 3 to remove the device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detachable forced centering measuring device for tunnel measurement, comprising a first steel plate (1), characterized in that: A second steel plate (2) is welded to one side of the outer surface of the first steel plate (1), and lifting ears (3) are welded to the upper and lower sides of the second steel plate (2). Reinforcement legs (4) are arranged on both sides of the bottom of the first steel plate (1), and one end of the two reinforcement legs (4) is fixedly connected to the second steel plate (2). A base plate (5) is welded to the top of the first steel plate (1), and a centering bolt (6) is arranged on the top of the base plate (5).

2. A detachable forced centering measuring device for tunnel measurement according to claim 1, characterized in that: The included angle between the first steel plate (1) and the second steel plate (2) is 83.108°, and the included angle between the first steel plate (1) and the reinforcing leg (4) is 35.731°.

3. The detachable forced centering measuring device for tunnel measurement according to claim 1, characterized in that: The included angle between the second steel plate (2) and the reinforcing leg (4) is 61.161°.

4. A detachable forced centering measuring device for tunnel measurement according to claim 1, characterized in that: The included angle between the lifting lug (3) on the upper side and the reinforcing leg (4) is 137.737°, and the included angle between the lifting lug (3) on the lower side and the reinforcing leg (4) is 136.175°.

5. The detachable forced centering measuring device for tunnel measurement according to claim 1, characterized in that: The length of the first steel plate (1) is 40 cm, and the length of the second steel plate (2) is 40 cm.

6. The detachable forced centering measuring device for tunnel measurement according to claim 1, characterized in that: The length of the lifting ear (3) is 12 cm, and the length of the reinforcing leg (4) is 33 cm.

7. The detachable forced centering measuring device for tunnel measurement according to claim 2, characterized in that: The base plate (5) has a groove formed inside, and three fixing holes (7) formed on the outer surface of the base plate (5). The inner threads of the three fixing holes (7) are connected to threaded rods (8), and one end of the three threaded rods (8) is provided with a turning handle (9). A transparent dust cover (10) is placed in the inner groove of the base plate (5).

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