Rapid positioning device for center of steel pipe column

Abstract

A steel pipe column center rapid positioning device comprises a base, a supporting arm and a balancing weight, the base is hemispherical, the arc surface of the base abuts against the upper end face of a steel pipe column, the upper end of the supporting arm is connected with a prism, the lower end of the supporting arm penetrates through the base and then is located in the steel pipe column, the prism is arranged relative to a total station, and the balancing weight is connected to the lower end of the supporting arm. According to the design, the center position can be quickly found in various hollow circular pipes through the base, and the balancing weight arranged on the central axis of the base and the supporting arm serving as a force arm amplify non-vertical torque, so that the base can overcome friction force between the outer surface of the base and the inner wall of the hollow circular pipe to enable the central axis to be quickly vertical; the spatial position of the top of the hollow tubular column can be quickly obtained by measuring the three-dimensional coordinates of the prism through the total station, and the perpendicularity of high and large and sheet columnar objects such as station canopy columns, contact net columns and net rack columns can be quickly detected. The perpendicularity of the steel pipe column can be adjusted by comparing the plane coordinate of the bottom center of the steel pipe column with the plane coordinate measured by the top center.

Description

TECHNICAL FIELD

[0001] The utility model relates to building construction technical field especially relates to a steel pipe column center quick positioning device. BACKGROUND

[0002] The commonly used station awning column, steel pipe column, high altitude net rack column and other force cylinder columns adopt steel plate to be rolled into thin-walled space by considering inertia moment, section material and convenient hoisting angle, verticality is ensured to make the axial force, verticality detection in longitudinal and transverse directions is often needed in the installation process, and all steel pipe column top parts are also ensured to be on the same plane, otherwise the pre-embedded parts of the connecting parts will be dislocated, the uneven force of the rod parts is easy to produce stress concentration to cause cracks or unattractive linear type, the steel pipe column is often repeatedly adjusted in reality and still not easy to reach the verticality requirement, currently the cross axis is popped at the column bottom to position the bottom, the vertical ball is hoisted at the column top to adjust the column top center deviation, the wind force, vibration and other factors will produce swing to influence the installation precision, the three-dimensional space coordinates of the column top center cannot be directly measured after installation to obtain the absolute value of the error to judge whether it is qualified, therefore, in the installation process, the efficiency is low and the installation precision still cannot reach the requirement. SUMMARY

[0003] The utility model aims at overcoming the low installation efficiency and precision of the steel pipe column in the prior art and provides a steel pipe column center quick positioning device with high installation efficiency and precision.

[0004] To achieve the above object, the technical solution of the utility model is as follows: a steel pipe column center quick positioning device, which comprises a base, a supporting arm and a counterweight, the base is semispherical, the circular arc surface of the base is abutted to the upper end surface of the steel pipe column, the supporting arm is vertically arranged, the upper end of the supporting arm is connected with a prism, the prism is arranged relative to a total station, the lower end of the supporting arm is located in the steel pipe column after penetrating through the base, and the counterweight is connected to the lower end of the supporting arm.

[0005] The upper end surface of the base is an inner concave circular arc surface.

[0006] The upper end surface center of the base is connected with a boss, the cross section of the boss is a trapezoid which is narrow at the top and wide at the bottom, and the lower end of the supporting arm is located in the steel pipe column after penetrating through the boss and the base in sequence.

[0007] The lower end surface of the boss and the circular arc surface of the base are both provided with a groove, and the groove is in the shape of a conical platform.

[0008] The upper end surface center of the boss is provided with a connecting block, and the lower end of the supporting arm is inserted into the center of the connecting block.

[0009] The connecting block is in the shape of a cylinder, and the axis of the connecting block, the boss and the base is coincident.

[0010] The counterweight is in the shape of a cone that is wide at the top and narrow at the bottom, and the center of gravity of the counterweight is located on the vertical central axis of the support arm.

[0011] The upper end of the support arm is located above the base, and the prism is inserted into the upper end of the support arm.

[0012] The center of the base is located on the vertical central axis of the support arm.

[0013] The reflection center of the prism is located at the center of the base, and the center of gravity of the prism is located on the vertical central axis of the support arm.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. In the steel pipe column center quick positioning device, when the steel pipe column is vertical, the reflection center of the prism is located at the center of the base, so that the reflection center of the prism is the center position of the top section of the hollow circular pipe to be detected under the action of the self-weight of the base, and the measured coordinates are the three-dimensional coordinates of the top center of the steel pipe column; when the steel pipe column is not vertical, the non-vertical moment is amplified through the counterweight arranged on the central axis of the base and the support arm acting as a force arm, so that the base can overcome the friction between the outer surface of the base and the inner wall of the hollow steel pipe to make the central axis automatically plumb quickly, so that the reflection center of the prism, the center of the base and the center of gravity of the counterweight are always forced to keep on a plumb line, and the three-dimensional coordinates of the prism measured by the total station instrument can quickly obtain the real-time space position of the top center of the hollow circular pipe column, so that the utility model is particularly suitable for quickly detecting the perpendicularity of large and piece-shaped columnar objects such as station canopy columns, catenary columns and net rack columns, and the absolute value of adjustment can be obtained by comparing the actual value with the theoretical value, the relative inclination value can be obtained by dividing the difference value between the plane coordinates of the bottom center of the steel pipe column and the plane coordinates of the top center by the height, and the finally measured coordinates can be used as the basis for completion acceptance of the column. Therefore, the utility model has high installation efficiency and precision and is convenient to use.

[0016] 2. In the steel pipe column center quick positioning device, the upper side of the base is arranged as a concave circular surface, so that the weight of the base can be reduced, thereby facilitating the quick plumb of the support arm; the boss and the connecting block are arranged, so that the support arm can be conveniently installed, disassembled and fixed; the boss can be reduced in weight and cost by arranging the groove; and the counterweight is arranged in the shape of a cone, so that the center of gravity position can be ensured to the greatest extent, and work is more stable. Therefore, the utility model has high reliability, is convenient to install and has low cost.

[0017] 3, the utility model discloses a kind of steel pipe column center quick positioning device, since device is located in steel pipe column, natural barrier is formed around it, wind force influence can be overcome in detection process, in wind force allows hoisting environment to guarantee the accuracy of detection, to avoid rework and miswork, therefore, the utility model has good reliability, strong adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the structural schematic diagram of the utility model.

[0019] Fig. 2 It is the sectional view schematic diagram of the utility model.

[0020] Fig. 3 It is the use state schematic diagram of the utility model.

[0021] In the drawing: base 1, support arm 2, counterweight 3, prism 4, boss 5, connecting block 6, recess 7, steel pipe column 8. DETAILED DESCRIPTION

[0022] The utility model is further explained in detail in the following combining with drawing explanation and specific embodiment.

[0023] Example 1:

[0024] Referring to Figs. 1-3 , a kind of steel pipe column 8 center quick positioning device, including base 1, support arm 2, counterweight 3, the base 1 is hemispherical, the arc surface of the base 1 is abutted to the upper end surface of steel pipe column 8, the support arm 2 is vertically arranged, the upper end of the support arm 2 is connected with prism 4, the prism 4 is arranged relative to total station, the lower end of the support arm 2 is located in steel pipe column 8 after passing through the base 1, the counterweight 3 is connected to the lower end of the support arm 2, the counterweight 3 is in the shape of wide upper narrow lower cone, the gravity center of counterweight 3 is located on the vertical central axis of support arm 2, the upper end surface of the base 1 is in the shape of concave arc surface, the upper end of the support arm 2 is located above the base 1, the prism 4 is inserted in the upper end of the support arm 2, the spherical center of the base 1 is located on the vertical central axis of support arm 2, the reflection center of the prism 4 is located at the spherical center position of base 1, and the gravity center of prism 4 is also located on the vertical central axis of support arm 2.

[0025] In the embodiment, the support arm 2 itself should have sufficient bending strength, in use, first, the support arm 2 and the counterweight 3 are placed into the inner wall of the hollow steel pipe of the steel pipe column 8 to be measured, the arc surface of the base 1 abuts on the steel pipe column 8, due to the gravity of the counterweight 3, the counterweight 3 and the support arm 2 are rotated, the counterweight 3 points to the directly below, the prism reflection center, the base center and the gravity center of the counterweight always force to keep on a plumb line, at this time, the three-dimensional coordinates of the prism 4 are measured by the total station to quickly obtain the space position of the center of the top of the hollow circular pipe column.

[0026] Embodiment 2:

[0027] Referring to Fig. 2 , the upper end surface center of the base 1 is connected with a boss 5, the cross section of the boss 5 is a trapezoid with narrow upper end and wide lower end, the lower end of the support arm 2 passes through the boss 5 and the base 1 in sequence and is located in the steel pipe column 8, the lower end surface of the boss 5 and the arc surface of the base 1 are both provided with a recess 7, the recess 7 is a conical table, the upper end surface center of the boss 5 is provided with a connecting block 6, the lower end of the support arm 2 is inserted into the center of the connecting block 6, the connecting block 6 is a cylinder, the axes of the connecting block 6, the boss 5 and the base 1 are coincident.

[0028] In the embodiment, the bottom diameter of the recess 7 is smaller than the inner diameter of the steel pipe column 8, before use, first, the support arm 2 passes through the boss 5 and the base 1 in sequence, then the counterweight 3 is installed on the lower end surface of the support arm 2, the prism 4 is inserted on the upper end surface, then the device is placed on the steel pipe column 8 to be measured for measurement, before measurement, the vertical state of the support arm 2 can be judged by observing the bubbles on the prism 4.

Claims

1. A steel pipe column center quick positioning device, characterized in that: The application relates to a support device for a total station, which comprises a base (1), a support arm (2) and a counterweight (3), wherein the base (1) is semispherical, the circular arc surface of the base (1) abuts against the upper end surface of a steel pipe column (8), the support arm (2) is vertically arranged, the upper end of the support arm (2) is connected with a prism (4), the prism (4) is arranged relative to the total station, the lower end of the support arm (2) is located in the steel pipe column (8) after penetrating through the base (1), and the counterweight (3) is connected to the lower end of the support arm (2).

2. A steel pipe column center quick positioning device according to claim 1, characterized in that: The upper end surface of the base (1) is a concave circular arc surface.

3. A steel pipe column center quick positioning device according to claim 2, characterized in that: A boss (5) is connected to the center of the upper end surface of the base (1), the cross section of the boss (5) is a trapezoid which is narrow at the top and wide at the bottom, and the lower end of the support arm (2) is located in the steel pipe column (8) after penetrating through the boss (5) and the base (1) in sequence.

4. A steel pipe column center quick positioning device according to claim 3, characterized in that: The lower end surface of the boss (5) and the circular arc surface of the base (1) are both provided with a groove (7), and the groove (7) is in the shape of a circular truncated cone.

5. A steel pipe column center quick positioning device according to claim 3, characterized in that: A connecting block (6) is arranged at the center of the upper end surface of the boss (5), and the lower end of the support arm (2) is inserted into the center of the connecting block (6).

6. A steel pipe column center quick positioning device according to claim 5, characterized in that: The connecting block (6) is in the shape of a cylinder, and the axis of the connecting block (6), the boss (5) and the base (1) is coincident.

7. A centering device for a steel pipe column according to claim 1, characterized in that: The counterweight (3) is in the shape of a circular cone which is wide at the top and narrow at the bottom, and the center of gravity of the counterweight (3) is located on the vertical central axis of the support arm (2).

8. A centering device for a steel pipe column according to claim 1, characterized in that: The upper end of the support arm (2) is located above the base (1), and the prism (4) is inserted into the upper end of the support arm (2).

9. A centering device for a steel pipe column according to claim 1, characterized in that: The center of the base (1) is located on the vertical central axis of the support arm (2).

10. A centering device for a steel pipe column according to claim 1, characterized in that: The reflection center of the prism (4) is located at the center of the base (1), and the center of gravity of the prism (4) is located on the vertical central axis of the support arm (2).

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