Forced centering disc accessory device of undercarriage gyroscopic total station

Abstract

The utility model relates to a forced centering disc accessory device of an undercarriage gyroscopic total station, aiming at solving the problem that a forced centering disc of the existing device can only be used for placing a total station and a base and cannot be directly used for placing the undercarriage gyroscopic total station, so that gyroscopic orientation cannot be carried out. The device comprises a hollow disc, a centering hand wheel, a flat steel bar, a disc with an internal thread in the center and a nut with a cross wire at the top, the hollow disc is arranged at the top of the flat steel bar, the disc with an internal thread in the center is arranged at the bottom of the flat steel bar, and the nut with the cross wire at the top is arranged in the center of the disc with the internal thread in the center. The device is simple in structure, ingenious and reasonable in design, easy and convenient to operate, low in cost, high in practicability and worthy of popularization.

Description

Technical Field

[0001] The utility model relates to the field of tunnel fixtures, and specifically designs a forced centering disk accessory device of a lower frame type gyro total station. Background Art

[0002] Traverse measurement is required in the construction of subways or tunnels, and the entire process of traverse measurement is accompanied by construction. If the control points are placed on the bottom plate or top plate, the progress of other construction will be affected when measuring. Moreover, the control points placed on the bottom plate are very easy to be damaged. For this reason, the control points are usually placed on the side walls of the tunnel, but it is not easy to set up a tripod for centering and leveling the control points on the side walls. In order to solve this problem, the control points are often made into forced centering disks, that is, the center of the disk is the control point. When measuring, we can directly place the total station and prism base on the forced centering disk for measurement. According to the measurement technical specifications, if the one-way length of the tunnel section exceeds 1.5KM, an underground control measurement including contact measurement is required every 600m after excavation to 500m, and gyro orientation is added to check the coordinates and orientation. However, the forced centering disk can only accommodate the total station and the base, and the lower gyro total station cannot be directly placed, making it impossible to perform gyro orientation.

[0003] Therefore, a lower-mounted gyro total station forced centering disk accessory device was designed and studied. The device can be directly placed on the forced centering disk, and the gyro total station can be directly placed on the device. Moreover, since it is extremely easy to center and level, with it, surveyors can conveniently perform gyro orientation in subways or tunnels, which can improve measurement efficiency and is highly practical. Utility Model Content

[0004] In order to solve the problem that the existing device forced centering disk can only be placed on the total station and the base, and the lower frame gyro total station cannot be directly placed, making it impossible to perform gyro orientation.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a forced centering disk accessory device for a lower frame gyro total station, comprising a hollow disc, a centering handwheel, a flat steel bar, a disc with an internal thread in the center, and a nut with a cross wire on the top. The top of the flat steel bar is provided with a hollow disc, the bottom of the flat steel bar is provided with a disc with an internal thread in the center, the center of the disc with an internal thread in the center is provided with a nut with a cross wire on the top, and centering handwheels are arranged in equal proportions around the hollow disc.

[0006] The centering hand wheels pass through the hollow disc, and there are three of them.

[0007] The number of the flat steel bars is 3.

[0008] The utility model has the following advantages:

[0009] 1. Simple structure, reasonable design, and easy processing and manufacturing.

[0010] 2. Low cost and easy operation.

[0011] 3. It is convenient to place the gyro total station, facilitate centering and leveling, and improve work efficiency.

[0012] The technical solution of the utility model is further described in detail below through the accompanying drawings and implementation plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the general diagram of the accessories of the present utility model.

[0014] Description of reference numerals:

[0015] 1-Hollow disc 2-Centering hand wheel 3-Flat steel bar 4-Disc with internal thread in the center

[0016] 5-Nut with cross wire on top Specific implementation plan

[0017] like Figure 1 As shown: a forced centering disk accessory device for a lower frame gyro total station comprises a hollow disc 1, a centering hand wheel 2, a flat steel bar 3, a disc 4 with an internal thread in the center, and a nut 5 with a cross wire on the top. The top of the flat steel bar 3 is provided with a hollow disc 1, the bottom of the flat steel bar 3 is provided with a disc 4 with an internal thread in the center, the center of the disc 4 with an internal thread in the center is provided with a nut 5 with a cross wire on the top, and the hollow disc 1 is provided with a centering hand wheel 2 in equal proportions around it.

[0018] The centering hand wheels 2 pass through the hollow disc 1 , and there are three of them.

[0019] The number of the flat steel bars 3 is 3.

[0020] When in use: In the gyro orientation of the subway or tunnel, the surveyor places the forced centering disk accessory device of the gyro total station on the forced centering disk of the side wall of the tunnel, and then places the gyro total station on the forced centering disk accessory device, and by rotating the three centering hand wheels 2, the laser emitted by the gyro laser plummet hits the center of the nut 5 with cross wires on the top of the stainless steel to achieve the purpose of centering, and the three foot screws on the gyro total station are rotated to achieve the purpose of leveling. Then the gyro orientation can be carried out.

[0021] In view of the shortcomings of the above-mentioned forced centering disk, the utility model aims to solve the technical problems and provide a forced centering disk accessory device for a gyro total station. The device has a simple structure, ingenious design, easy operation, low cost and strong practicality. It makes it easy to place the gyro total station on the forced centering disk, thereby achieving the purpose of orientation, and is worthy of popularization and application.

Claims

1. A forced centering disk attachment device for a lower frame gyro total station, characterized in that: The invention comprises a hollow disc (1), a centering hand wheel (2), a flat steel bar (3), a disc (4) with an internal thread at the center, and a nut (5) with a cross thread at the top. The top of the flat steel bar (3) is provided with the hollow disc (1), the bottom of the flat steel bar (3) is provided with a disc (4) with an internal thread at the center, the center of the disc (4) with an internal thread at the center is provided with a nut (5) with a cross thread at the top, and centering hand wheels (2) are provided at equal proportions around the hollow disc (1).

2. The forced centering disk accessory device for the under-mounted gyro total station as claimed in claim 1, characterized in that: The centering hand wheels (2) pass through the hollow disc (1), and there are three of them.

3. The forced centering disk accessory device for the under-mounted gyro total station as claimed in claim 1, characterized in that: The number of the flat steel bars (3) is 3.

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