Device capable of quickly calibrating centering rod

Abstract

The utility model relates to the field of surveying and mapping equipment, and discloses a device capable of quickly calibrating a centering rod, which comprises a seat body and a tripod, the seat body is provided with a group of connectors, and the lower ends of the connectors are provided with hooks for hanging the centering rod so as to enable the centering rod to be vertically suspended; the tripod comprises three groups of supporting legs hinged to the seat body and is used for supporting the seat body; the three groups of supporting legs are rotationally symmetrical about the axis of the connector; at least two sets of supporting rods are hinged to each set of supporting legs in the axial direction at intervals, and the free ends of each set of supporting rods extend to the peripheral side of the centering rod and are used for limiting shaking of the centering rod; according to the device, the principle that the gravity is vertically downward is fully utilized, and the purposes of quick correction and high precision are achieved by reducing shaking of the rod body in the centering rod calibration process.

Description

Technical Field

[0001] The utility model relates to the field of surveying and mapping equipment, and in particular to a device for quickly calibrating a centering rod. Background Art

[0002] During the measurement process of the centering rod, the rod body must be kept vertical to ensure the measurement accuracy. However, due to the influence of factors such as vibration, handling, and collision, although the circular spirit level bubble of the rod body is leveled, the rod body is still not plumb, thus affecting the accuracy of the measurement results. The traditional calibration method is to set up two theodolites or total stations at 90° to each other in the line of sight with the centering rod as the center. Under the command of the observer, the calibration personnel make the centering rod plumb in the line of sight directions of the two instruments, and then adjust the calibration screws under the circular spirit level of the centering rod to make the bubble centered. In this way, it takes several repetitions to completely calibrate the inclination of the centering rod. This method requires operating two theodolites or total stations simultaneously in a certain space, and it is rather troublesome to command the centering rod to be plumb by the two instruments. At least 3 calibration personnel are required to operate, and it takes a long time. Therefore, this calibration method is cumbersome, occupies a large space, is not easy to operate, and has low accuracy. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the shortcomings of the background art and provide a device for quickly calibrating a centering rod.

[0004] The embodiments of the utility model are realized by the following technical solutions:

[0005] A device for quickly calibrating a centering rod, comprising:

[0006] A seat body, which has a set of connectors, and the lower ends of the connectors have hooks for hanging the centering rod, so that the centering rod is suspended vertically; and

[0007] A tripod, which includes three legs hinged to the seat body to support the seat body; the three legs are arranged in rotational symmetry about the axis of the connector; at least two sets of struts are hinged at intervals in the axial direction of each leg, and the free ends of each set of struts extend to the periphery of the centering rod to limit the sway of the centering rod.

[0008] Further, among the several struts, three struts hinged at the same height of the three legs form a set of horizontal stability brackets, and two sets of horizontal stability brackets are provided inside the tripod.

[0009] Further, each free end of each set of struts also has a set of arc portions. When the free end of the strut points to the centering rod, the arc portion faces the centering rod to limit the sway amplitude of the centering rod.

[0010] Further, three groups of the arc-shaped parts within the same group of the horizontal stabilizing brackets enclose an annular wall surface that wraps around the circumferential side of the centering rod.

[0011] Further, the arc-shaped part is composed of an arc-shaped rod provided at the end of the support rod.

[0012] Further, the connector is detachably installed in the seat body.

[0013] Further, a set of threaded knobs are also inserted through the side wall of the seat body, and the threaded knobs abut against the connector to fix the connector.

[0014] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0015] In the device for quickly calibrating the centering rod of the present invention, by fully utilizing the principle that gravity acts vertically downward, a set of tripods are provided to suspend the centering rod, and then the centering rod is supported on the circumferential side of the rod body of the centering rod through three groups of support rods on the tripod, reducing the shaking of the rod body during the calibration process and facilitating the quick calibration of the centering rod. Description of the Drawings

[0016] Figure 1 is a perspective view of the device for quickly calibrating the centering rod of the present invention;

[0017] Figure 2 is Figure 1 an enlarged view of part A of

[0018] Figure 3 is Figure 1 an enlarged view of part B of

[0019] Reference numerals: 1 - seat body, 10 - connector, 11 - hook, 12 - threaded knob, 2 - tripod, 20 - leg, 3 - horizontal stabilizing bracket, 30 - support rod, 31 - arc-shaped part, 4 - centering rod. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0021] Referring to Figures 1 to 3 , the present invention discloses a device for quickly calibrating a centering rod 4, including a seat body 1, a tripod 2, and a horizontal stabilizing bracket 3.

[0022] Among them, the seat body 1 is supported and suspended by a tripod 2, refer to Figure 2 , a set of through holes penetrate through the upper and lower parts of the middle of the seat body 1, and a set of connectors 10 are detachably arranged in the through holes, and the lower ends of the connectors 10 extend beyond the bottom of the seat body 1; a set of threaded knobs 12 are also penetrated on the side wall of the seat body 1, and the threaded knobs 12 abut against the connectors 10 to fix the connectors 10.

[0023] Among them, a set of hooks 11 are arranged at the lower end of the connector 10, and the hooks 11 are used to hang the centering rod 4 so that the centering rod 4 is suspended vertically.

[0024] Refer to Figure 1 , the tripod 2 includes three legs 20 hinged to the seat body 1, and a damping hinge structure can be adopted. The three legs 20 are arranged in a rotationally symmetric manner about the axis of the connector 10, and can be conveniently unfolded and gathered.

[0025] Refer to Figure 1 , at least two sets of struts 30 are hinged at intervals in the axial direction of each leg 20, and the free ends of each set of struts 30 extend to the periphery of the centering rod 4 to limit the shaking of the centering rod 4; in this embodiment, three struts 30 hinged at the same height of the three legs 20 form a set of horizontal stable brackets 3, and there are two sets of the aforementioned horizontal stable brackets 3 in the tripod 2 in the device, which can be restricted from different positions in the axial direction of the centering rod 4.

[0026] Refer to Figure 3 , in this embodiment, each free end of the strut 30 also has a set of arc portions 31. When the free end of the strut 30 points to the centering rod 4, the arc portions 31 face the centering rod 4 to limit the shaking amplitude of the centering rod 4 and reduce the interference caused by the shaking of the centering rod 4 during the calibration process of the centering rod 4.

[0027] Refer to Figure 3 , in one embodiment, the arc portion 31 is composed of an arc rod arranged at the end of the strut 30, and the three arc portions 31 located in the same set of horizontal stable brackets 3 enclose a set of annular walls surrounding the periphery of the centering rod 4.

[0028] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for quickly calibrating a centering rod, characterized in that: include: The seat body has a set of connectors, and the lower end of the connector has a hook for hanging the centering rod, so that the centering rod is suspended vertically; as well as A tripod comprises three groups of legs hinged on the base body for supporting the base body; the three groups of legs are arranged in rotational symmetry about the axis of the connector; each group of legs is hinged with at least two groups of support rods at intervals in the axial direction, and the free ends of each group of support rods extend to the peripheral side of the centering rod to limit the shaking of the centering rod.

2. The device for quick calibration of the centering rod according to claim 1, characterized in that: Among the plurality of support rods, three groups of the support rods hinged at the same height of the three groups of legs form a group of horizontal stable brackets, and two groups of the horizontal stable brackets are arranged in the tripod.

3. The device for quick calibration of the centering rod according to claim 2, characterized in that: The free ends of each group of support rods also have a group of arc-shaped portions. When the free ends of the support rods point to the centering rod, the arc-shaped portions face the centering rod to limit the shaking amplitude of the centering rod.

4. The device for quickly calibrating a centering rod according to claim 3, characterized in that: The three groups of arc-shaped portions located in the same group of the horizontal stabilizing brackets form a group of annular wall surfaces surrounding the circumference of the centering rod.

5. The device for quick calibration of the centering rod according to claim 3, characterized in that: The arc portion is composed of an arc rod arranged at the end of the support rod.

6. The device for quick calibration of the centering rod according to claim 1, characterized in that: The connector is installed in the seat body in a pluggable manner.

7. The device for quickly calibrating a centering rod according to claim 6, characterized in that: A group of threaded knobs are also provided on the side wall of the seat body, and the threaded knobs are pressed against the connector to fix the connector.

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