Tunnel side wall suspended total station centering device

Abstract

The utility model relates to a tunnel side wall suspended total station centering device which comprises a bottom frame, an instrument tray is arranged at the top of the bottom frame, an adjusting mechanism is arranged at the top of the bottom frame and comprises a first threaded rod rotationally connected to the interior of the bottom frame, and the outer surface of the first threaded rod is in threaded connection with a first moving seat. The top of the first moving seat is fixedly connected with a fixed seat, a second threaded rod is rotatably connected into the fixed seat, the outer surface of the second threaded rod is in threaded connection with the instrument tray, the bottom of the first moving seat is limited and slidably connected to the outer surface of the bottom frame, and a sliding groove is formed in the fixed seat. The bottom of the limiting sliding block is slidably connected into the sliding groove. According to the centering device for the total station suspended on the side wall of the tunnel, through the design of the adjusting mechanism, the position of the instrument tray can be accurately adjusted, accurate centering of the total station on the side wall of the tunnel is ensured, and therefore the measurement precision is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a centering device for a total station suspended on a tunnel sidewall. Background Technology

[0002] When constructing a new tunnel under or over an existing operational tunnel, deformation monitoring of the operational tunnel is required. Measurements such as arch settlement and tunnel convergence are typically calculated by measuring the coordinates of monitoring points using a total station. These projects demand extremely high measurement accuracy and monitoring frequency: the space inside the tunnel is narrow on both sides, and there is heavy traffic, so a total station needs to be fixed high on the tunnel's inner sidewall for long-term monitoring. Currently, a common method is to install a centering device on the tunnel sidewall and mount the total station on the centering device to achieve this.

[0003] To ensure the accuracy and reliability of total station measurement results, it is necessary to ensure that the total station is level on the centering device and that the center of the total station's field of view is aligned with the target area. Currently, the centering device is usually manufactured and installed based on pre-obtained design parameters of the tunnel. However, when the sidewall structure of the tunnel used to install the centering device is complex, such as when the sidewall at a high point in the tunnel tilts inward, the centering device may have positional or angular deviations after installation, making it difficult to ensure that the total station is in a suitable position. In such cases, it is necessary to remove the centering device, adjust its position, and then reinstall it, which is quite difficult. Therefore, a tunnel sidewall-suspended total station centering device is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a centering device for a total station suspended on a tunnel sidewall, which has advantages such as good centering effect and easy adjustment, and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a centering device for a total station suspended on a tunnel sidewall, comprising a base frame, an instrument tray on the top of the base frame, and an adjustment mechanism on the top of the base frame.

[0006] Furthermore, the adjustment mechanism includes a first threaded rod rotatably connected inside the base frame, a first movable seat threadedly connected to the outer surface of the first threaded rod, a fixed seat fixedly connected to the top of the first movable seat, a second threaded rod rotatably connected inside the fixed seat, and the outer surface of the second threaded rod threadedly connected to the instrument tray.

[0007] Furthermore, the bottom of the first movable seat is slidably connected to the outer surface of the base frame, the fixed seat has a groove inside, and the bottom of the instrument tray is fixedly connected to a limiting slider, the bottom of the limiting slider being slidably connected to the inside of the groove.

[0008] Furthermore, a first handwheel is fixedly connected to one end of the first threaded rod, and a second handwheel is fixedly connected to one end of the second threaded rod. Anti-slip textures are provided on the outer surfaces of both the first and second handwheels.

[0009] Furthermore, a hinge rod is hinged to the bottom of the base frame, and a mounting plate is fixedly connected to one end of the base frame and one end of the hinge rod. The mounting plate has mounting holes inside.

[0010] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0011] 1. The total station centering device suspended on the tunnel sidewall, through the design of the adjustment mechanism, can precisely adjust the position of the instrument tray to ensure accurate centering of the total station on the tunnel sidewall, thereby significantly improving measurement accuracy.

[0012] 2. The centering device for the total station suspended on the tunnel sidewall features a hinged design between the base frame and the hinged rod, along with a mounting plate and mounting holes, which allows the device to be firmly fixed to the tunnel sidewall, ensuring the stability of the total station. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0014] Fig. 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0015] Fig. 3 This is a schematic diagram of the adjustment mechanism of this utility model.

[0016] In the figure: 1 base frame, 101 mounting plate, 102 hinge rod, 2 instrument tray, 3 adjustment mechanism, 301 first handwheel, 302 first threaded rod, 303 first moving seat, 304 slide groove, 305 fixed seat, 306 second handwheel, 307 second threaded rod, 308 limiting slider. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figs. 1-3 The total station centering device suspended on the tunnel sidewall in this embodiment includes a base frame 1, an instrument tray 2 is provided on the top of the base frame 1, the instrument tray 2 has a fixing hole for the total station inside, and an adjustment mechanism 3 is provided on the top of the base frame 1.

[0019] The adjustment mechanism 3 includes a first threaded rod 302 rotatably connected inside the base frame 1, a first movable seat 303 threadedly connected to the outer surface of the first threaded rod 302, a fixed seat 305 fixedly connected to the top of the first movable seat 303, a second threaded rod 307 rotatably connected inside the fixed seat 305, and the outer surface of the second threaded rod 307 threadedly connected to the instrument tray 2.

[0020] The design of the first threaded rod 302 and the second threaded rod 306 in the adjustment mechanism 3 makes the position adjustment of the instrument tray 2 simple and quick. The operator only needs to rotate the handwheel to achieve precise centering, which greatly improves the measurement efficiency.

[0021] Secondly, the bottom of the first movable seat 303 is slidably connected to the outer surface of the base frame 1, and the fixed seat 305 has a groove 304 inside. The bottom of the instrument tray 2 is fixedly connected to a limiting slider 308, and the bottom of the limiting slider 308 is slidably connected to the groove 304. This can make the instrument tray 2 and the first movable seat 303 more stable when sliding.

[0022] The design of the adjustment mechanism 3 allows for precise adjustment of the position of the instrument tray 2, ensuring accurate centering of the total station on the tunnel sidewall and thus significantly improving measurement accuracy.

[0023] Furthermore, a first handwheel 301 is fixedly connected to one end of the first threaded rod 302, and a second handwheel 306 is fixedly connected to one end of the second threaded rod 307. Anti-slip textures are provided on the outer surfaces of both the first handwheel 301 and the second handwheel 306 to minimize the risk of slipping when using the handwheels.

[0024] Additionally, a hinge rod 102 is hinged to the bottom of the base frame 1. An installation plate 101 is fixedly connected to one end of the base frame 1 and one end of the hinge rod 102. The shape of the installation plate 101 can be set according to the shape of the tunnel inner wall. Installation holes are opened inside the installation plate 101.

[0025] The working principle of the above embodiments is as follows:

[0026] The total station centering device is suspended on the tunnel sidewall. When in use, the mounting plate 101 is installed in a suitable position inside the tunnel, and the total station is installed on the instrument tray 2. The first handwheel 301 and the second handwheel 306 are used to drive the first threaded rod 302 and the second threaded rod 307 to move the total station for centering adjustment.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel side wall hanging total station instrument centering device, comprising a chassis (1), characterized in that: The bottom frame (1) top is provided with instrument tray (2), the bottom frame (1) top is provided with adjusting mechanism (3); The adjusting mechanism (3) includes first threaded rod (302) rotatably connected to the inside of the bottom frame (1), the first threaded rod (302) is externally threaded with the first moving seat (303), the first moving seat (303) top is fixedly connected with the fixed seat (305), the fixed seat (305) is rotatably connected with the second threaded rod (307) inside, the second threaded rod (307) is externally threaded with the instrument tray (2).

2. The tunnel side wall suspended total station instrument centering device according to claim 1, characterized in that: The first moving seat (303) bottom is slidably connected to the outer surface of the bottom frame (1), the fixed seat (305) is provided with a sliding groove (304) inside, the instrument tray (2) bottom is fixedly connected with a limiting slide block (308), the limiting slide block (308) bottom is slidably connected to the inside of the sliding groove (304).

3. The tunnel side wall suspended total station instrument centering device according to claim 1, characterized in that: The first threaded rod (302) one end is fixedly connected with the first hand wheel (301), the second threaded rod (307) one end is fixedly connected with the second hand wheel (306), the first hand wheel (301) and the second hand wheel (306) outer surface are both provided with anti-skid lines.

4. The tunnel side wall suspended total station alignment device of claim 1, wherein: The bottom frame (1) bottom is hingedly connected with the hinge rod (102), one end of the bottom frame (1) and one end of the hinge rod (102) are both fixedly connected with the mounting plate (101), the mounting plate (101) inside is both provided with mounting holes.

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