Center positioning device

Abstract

The utility model relates to a center positioning device, in particular to a positioning device capable of simply and quickly determining the center of an object. A center positioning device comprises a telescopic assembly and a positioning assembly, and the positioning assembly is arranged on the telescopic assembly through a connecting table. The telescopic assembly is supported at the bottom of the connecting table, and the connecting table is further provided with a levelness tester used for determining levelness. The positioning assembly comprises a target seat, a target ball and a positioning ball, the target ball is provided with a cavity matched with the positioning ball, and the center of the target ball coincides with the center of the positioning ball; a groove is formed in the connecting table, and the target seat is connected into the groove. According to the utility model, the tedious steps of taking multiple points of the penetration piece by using a total station, then carding the data of the total station and finally obtaining the central position of the penetration piece are not needed, and the central position of the penetration piece can be rapidly and accurately obtained.

Description

Technical Field

[0001] The utility model relates to a central positioning device, specifically to a positioning device that can simply and quickly determine the center of an object. Background Art

[0002] The mechanical and pipe penetrations on the nuclear reactor containment are important components during the construction of nuclear power plants. It is necessary to conduct pre-service and in-service inspections and determine their positions. Usually, the center of the penetrations needs to be determined first to determine the exact positions of the penetrations. Currently, when determining the center position of the penetrations, it is necessary to manually measure points through a total station, and then through the conversion of the total station data, the center and exact position of the penetrations are finally obtained. However, this positioning method not only has large errors but also requires multi-point measurement, resulting in low efficiency and accuracy. Content of the Utility Model

[0003] The purpose of the utility model is to provide a central positioning device, which solves the problems of cumbersome positioning and low efficiency for the center position of the penetrations.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A central positioning device includes a telescopic assembly and a positioning assembly. The positioning assembly is arranged on the telescopic assembly through a connecting platform; the telescopic assembly supports at the bottom of the connecting platform, and a level tester for determining the levelness is also arranged on the connecting platform.

[0006] Further, the positioning assembly includes a target base, a target ball, and a positioning ball. The target ball is provided with a cavity adapted to the positioning ball, and the center of the target ball coincides with the center of the positioning ball; a groove is arranged on the connecting platform, and the target base is connected in the groove.

[0007] Further, there are three telescopic assemblies in total. The telescopic assemblies are evenly arranged along the circumferential direction of the connecting platform, and each telescopic assembly is placed parallel to the horizontal plane; the telescopic assembly includes a sleeve and a support leg. The sleeve is sleeved on the outside of the support leg, and the support leg is hinged on the connecting platform; a long hole is arranged on the sleeve, a bolt hole is arranged on the support leg, and the support leg is connected to the long hole of the sleeve through a fixing member.

[0008] Further, the fixing member includes a bolt and a nut. The bolt is located on one side of the support leg, and the nut is located on the other side of the support leg. The bolt is adapted to the nut.

[0009] Further, a scale is marked on each support leg, and a pointer for indicating the scale is arranged on the bolt.

[0010] Further, the level tester includes an offset area and a horizontal area. The offset areas are located on both sides of the horizontal area.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] By enabling the support legs to move within the kit, the utility model can make the bottom ends of the support legs adapt to through members with different radii. When the three support legs of the same length are all attached to the top surface of the through member and the three bolts are simultaneously attached to the inner wall of the through member, the center position of the center ball, that is, the center position of the through member, can be determined, and the position of the through member can be obtained. The utility model does not need to use a total station to take multiple points on the through member and then sort out the data of the total station, and finally obtain the cumbersome steps of the center position of the through member, and can quickly and accurately obtain the center position of the through member. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a center positioning device.

[0014] Figure 2 It is a schematic diagram of a center positioning device and a through member.

[0015] Figure 3 It is a schematic diagram of a positioning component.

[0016] Figure 4 It is a schematic diagram of a telescopic component. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] As Figure 1 and Figure 2 shown, a center positioning device includes a telescopic component and a positioning component. The positioning component is arranged on the telescopic component through a connecting platform 1. The telescopic component is supported at the bottom of the connecting platform 1, and a level tester 2 for determining the levelness is further arranged on the connecting platform 1. Currently, the method for determining the center position of the through member 3 not only has cumbersome steps but also has large errors, resulting in ineffective data. When the utility model determines the center position of the through member 3, first, the length of the telescopic component is adjusted to make the telescopic component respectively attached to the top surface of the through member 3, and then the level tester 2 located on the connecting platform 1 is observed to determine the levelness of the connecting platform 1 at this time. After determining that the connecting platform 1 is in a horizontal state at this time, the center position of the positioning component is the center position of the through member 3.

[0018] As Figure 3As shown in the figure, the positioning component includes a target base 11, a target ball 12 and a positioning ball 13. The target ball 12 is provided with a cavity adapted to the positioning ball 13, and the center of the target ball 12 coincides with the center of the positioning ball 13. A groove is provided on the connecting platform 1, and the target base 11 is connected in the groove. The center of the groove is collinear with the center of the connecting platform 1. The target base 11 is adapted to the groove, and the center of the target base 11 is collinear with the center of the groove. The center of the target ball 12 is collinear with the center of the target base 11, and the center of the target ball 12 coincides with the center of the positioning ball 13. It can be known that the center of the positioning ball 13 is collinear with the center of the through member 3, so that the center position of the through member 3 can be known, and the specific position of the through member 3 can be determined accordingly.

[0019] As Figure 4 As shown in the figure, there are three telescopic components in total. The telescopic components are evenly arranged along the circumferential direction of the connecting platform 1, and each telescopic component is horizontally placed with the horizontal plane. The telescopic component includes a sleeve 21 and a leg 22. The sleeve 21 is sleeved on the outside of the leg 22, and the leg 22 is hinged on the connecting platform 1. A long hole 23 is provided on the sleeve 21, and a bolt hole is provided on the leg 22. The leg 22 is connected to the long hole 23 of the sleeve 21 through a fixing member. The fixing member includes a bolt 24 and a nut 25. The bolt 24 is located on one side of the leg 22, and the nut 25 is located on the other side of the leg 22. The bolt 24 is adapted to the nut 25. By adjusting the bolt 24, the position of the leg 22 in the sleeve 21 is controlled, and the positions of each leg 22 are ensured to be the same, and the bolt 24 is abutted against the inner wall of the through member 3. The positioning component is made more stable by three-point support, and the measured result is more accurate. A scale is marked on each leg 22, and a pointer 26 for indicating the scale is provided on the bolt 24. First, make the pointers 26 of each bolt 24 point to the same scale. The horizontal tester 2 includes an offset area and a horizontal area. The offset area is located on both sides of the horizontal area. A bubble is provided in the medium of the horizontal tester 2. The offset area and the horizontal area are made of transparent materials for easy observation of the position of the bubble. Then observe whether the bubble in the horizontal tester 2 is located in the horizontal area. If it is located in the horizontal area, it proves that the connecting platform 1 is in a horizontal state at present. If the bubble is located in the offset area, the position of the through member 3 needs to be adjusted until the bubble is located in the horizontal area, that is, the connecting platform 1 is in a horizontal state.

[0020] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also belong to the protection scope of the present invention.

Claims

1. A central positioning device, characterized in that, It includes a telescopic component and a positioning component. The positioning component is arranged on the telescopic component through a connecting platform. The telescopic component is supported at the bottom of the connecting platform, and a horizontal tester for determining the levelness is also provided on the connecting platform.

2. The central positioning device according to claim 1, wherein, The positioning component includes a target base, a target ball, and a positioning ball. The target ball is provided with a cavity adapted to the positioning ball, and the center of the target ball coincides with the center of the positioning ball. A groove is provided on the connecting platform, and the target base is connected in the groove.

3. The central positioning device according to claim 1, characterized in that, There are three telescopic components in total. The telescopic components are evenly arranged along the circumference of the connecting platform, and each telescopic component is placed parallel to the horizontal plane. The telescopic component includes a sleeve and a leg. The sleeve is sleeved on the outside of the leg, and the leg is hinged on the connecting platform. A long hole is provided on the sleeve, and a bolt hole is provided on the leg. The leg is connected to the long hole of the sleeve through a fixing member.

4. A central positioning device according to claim 3, characterized in that, The fixing member includes a bolt and a nut. The bolt is located on one side of the leg, and the nut is located on the other side of the leg. The bolt is adapted to the nut.

5. A central positioning device according to claim 4, characterized in that, A scale is marked on each leg, and a pointer for indicating the scale is provided on the bolt.

6. A central positioning device according to claim 1, characterized in that, The horizontal tester includes an offset area and a horizontal area. The offset areas are located on both sides of the horizontal area.

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