A total station used in a space-ground integrated mobile measurement system

Abstract

This utility model discloses a total station used in a ground-to-ground integrated mobile surveying system, including a surveying body (1), a tripod (2) below the surveying body (1), and a rotating assembly (3) between the surveying body (1) and the tripod (2). The rotating assembly (3) includes a turntable (4) fixed to the bottom of the surveying body (1). The bottom of the turntable (4) has a cylindrical first cavity (5). A base (6) fixed to the tripod (2) is provided in the first cavity (5). An annular groove (7) is provided on the outer circumferential surface of the base (6). A spring coil (8) is provided in the annular groove (7). A break point (9) is provided on the spring coil (8). An elastic friction layer (10) is provided on the outer circumferential surface of the spring coil (8). This utility model has the advantage of low maintenance frequency.

Description

Technical Field

[0001] This utility model belongs to the field of total stations, and in particular relates to a total station used in a ground-to-ground integrated mobile surveying system. Background Technology

[0002] The integrated space-ground mobile surveying system is a comprehensive surveying system that integrates multiple technologies such as satellite remote sensing, aerial photography, UAV mapping, and ground mobile surveying. The total station is a crucial component of this system. By placing the total station at a known point, inputting relevant parameters, and orienting it, the distance to the target point can be measured using a reflecting prism, directly obtaining the target point's three-dimensional coordinates. This provides accurate ground control point coordinates for integrated space-ground surveying, facilitating precise matching and fusion of aerial and satellite data with ground data, ensuring the accuracy and consistency of the entire surveying system.

[0003] The existing total station structure includes a measuring body, a tripod underneath the measuring body, and a rotating assembly between the measuring body and the tripod. During coordinate layout, the rotating assembly changes the horizontal orientation of the measuring body to align with different layout points. This requires the rotating assembly to have a certain degree of damping. The damping force must prevent the tripod from moving under the damping force when the measuring body is rotated, while the damping force must also be sufficient to prevent the measuring body from rotating arbitrarily after reaching the desired angle. Especially during operation, the damping force must overcome the force exerted by the surveyor to ensure the measuring body remains stationary. Currently, damping force is achieved by using an elastic rubber ring between the fixed and rotating parts of the rotating assembly. However, this elastic rubber ring is prone to wear; even slight wear can cause the damping force to deviate from the set range, potentially requiring replacement, resulting in frequent maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a total station for use in an integrated ground-to-ground mobile surveying system. This invention has the advantage of requiring less maintenance.

[0005] The technical solution of this utility model: A total station used in an integrated ground-to-ground mobile measurement system includes a measuring body, a tripod below the measuring body, and a rotating assembly between the measuring body and the tripod. The rotating assembly includes a turntable fixed to the bottom of the measuring body, a cylindrical first cavity at the bottom of the turntable, a base fixed to the tripod inside the first cavity, an annular groove on the outer circumferential surface of the base, a spring ring inside the annular groove, a break point on the spring ring, and an elastic friction layer on the outer circumferential surface of the spring ring.

[0006] In the total station used in the aforementioned integrated land-ground mobile surveying system, the bottom surface of the annular groove is provided with an inwardly extending slot, and a plug that is bent into the slot is provided at the break point of the spring coil.

[0007] In the total station used in the aforementioned integrated space-ground mobile surveying system, the opening of the first cavity is chamfered.

[0008] In the total station used in the aforementioned integrated land-ground mobile surveying system, a positioning shaft is provided at the center of the bottom surface of the first cavity, and a second cavity is provided on the top surface of the base, with a bearing for connecting the positioning shaft inside the second cavity.

[0009] In the total station used in the aforementioned integrated space-ground mobile surveying system, the material of the elastic friction layer is polyurethane rubber.

[0010] Compared with existing technologies, this invention improves the rotating assembly of a total station by incorporating a spring coil with a break point between the base (fixed part) and the turntable (rotating part) of the rotating assembly. The spring coil deforms under the constraint of the turntable, giving it an outward expanding elastic force. This spring coil establishes a damped rotational connection with the turntable through an elastic friction layer, providing damping force when the measuring body rotates. When the elastic friction layer wears, the spring coil automatically expands to compensate for the wear, effectively preventing significant changes in damping force and avoiding deviations from the set range, thus reducing maintenance frequency. Therefore, this invention has the advantage of lower maintenance frequency.

[0011] Furthermore, this utility model has a simple structure and is suitable for improvement based on existing total stations. It can be obtained by replacing the original elastic rubber ring with a spring ring and machining a corresponding annular groove to fit the spring ring installation, resulting in low modification costs. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of this utility model.

[0013] Figure 2 This is a front view of the rotating component.

[0014] Figure 3 This is a top view of the spring coil.

[0015] The labels in the attached diagram are as follows: 1-measuring body, 2-tripod, 3-rotating assembly, 4-turntable, 5-first cavity, 6-base, 7-annular groove, 8-spring ring, 9-disconnection point, 10-elastic friction layer, 11-plug, 12-chamfer, 13-positioning shaft, 14-second cavity, 15-bearing. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example: A total station used in a ground-to-ground integrated mobile surveying system, such as... Figure 1 As shown, it includes a measuring body 1, a tripod 2 is provided below the measuring body 1, and a rotating component 3 is provided between the measuring body 1 and the tripod 2.

[0018] like Figure 2 As shown, the rotating assembly 3 includes a turntable 4 fixed to the bottom of the measuring body 1. The bottom of the turntable 4 has a cylindrical first cavity 5. A base 6 fixed to the tripod 2 is located within the first cavity 5. An annular groove 7 is provided on the outer circumferential surface of the base 6. A spring coil 8 is located within the annular groove 7. A break point 9 is provided on the spring coil 8. An elastic friction layer 10 made of polyurethane rubber is provided on the outer circumferential surface of the spring coil 8. The spring coil 8 is formed by winding a spring steel plate.

[0019] The annular groove 7 has an inwardly extending slot on its circumferential bottom surface, and the spring coil 8 has a plug 11 bent into the slot at its break point 9. The engagement of the plug 11 with the slot prevents the spring coil 8 from rotating with the turntable 4.

[0020] The opening of the first cavity 5 is provided with a chamfer 12. The chamfer 12 is used to make it easier to assemble the spring coil 8 between the base 6 and the turntable 4.

[0021] A positioning shaft 13 is provided at the center of the bottom surface of the first cavity 5, and a second cavity 14 is provided on the top surface of the base 6. A bearing 15 connecting the positioning shaft 13 is provided in the second cavity 14. The base 6 and the turntable 4 are fitted with a clearance fit, so that the friction powder of the elastic friction layer 10 can fall out.

[0022] In the assembly process, the bearing 15 is first placed into the second cavity 14, and the plug 11 is inserted into the slot. At this time, the spring ring 8 is not yet constrained by the turntable 4, and its outer diameter is larger than the inner diameter of the first cavity 5. Part of the spring ring 8 is located on the outer side of the outer circumference of the base 6. The turntable 4 is pressed down, and the positioning shaft 13 enters the inner hole of the bearing 15. Under the action of the chamfer 12, the spring ring 8 moves inward and completely enters the annular groove 7. The spring ring 8 deforms, and provides damping force to the turntable 4 during rotation through the elastic friction layer 10. When the elastic friction layer 10 wears, the elastic ring 8 automatically expands its diameter to compensate for the wear allowance and keep the damping force basically unchanged.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A total station used in a ground-to-ground integrated mobile surveying system, comprising a surveying body (1), a tripod (2) below the surveying body (1), and a rotating assembly (3) between the surveying body (1) and the tripod (2), characterized in that: The rotating assembly (3) includes a turntable (4) fixed to the bottom of the measuring body (1). The bottom of the turntable (4) is provided with a cylindrical first cavity (5). The first cavity (5) is provided with a base (6) fixed to the tripod (2). The outer circumferential surface of the base (6) is provided with an annular groove (7). The annular groove (7) is provided with a spring ring (8). The spring ring (8) is provided with a break point (9). The outer circumferential surface of the spring ring (8) is provided with an elastic friction layer (10).

2. The total station used in the integrated land-ground mobile surveying system according to claim 1, characterized in that: The annular groove (7) has an inwardly extending slot on its circumferential bottom surface, and the spring coil (8) has a plug (11) bent into the slot at the break point (9).

3. The total station used in the integrated land-ground mobile surveying system according to claim 1, characterized in that: The opening of the first cavity (5) is provided with a chamfer (12).

4. The total station used in the integrated land-ground mobile surveying system according to claim 1, characterized in that: The bottom center of the first cavity (5) is provided with a positioning shaft (13), and the top surface of the base (6) is provided with a second cavity (14), and the second cavity (14) is provided with a bearing (15) that connects to the positioning shaft (13).

5. The total station used in the integrated land-ground mobile surveying system according to claim 1, characterized in that: The elastic friction layer (10) is made of polyurethane rubber.

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