CN216743469U - Prefabricated segmental splicing type forced centering device - Google Patents

Abstract

The utility model discloses a prefabricated section-splicing type forced centering device which comprises a forced centering disc, wherein a central threaded hole is formed in the forced centering disc, an adapter used for being connected with measuring equipment is arranged in the central threaded hole, the prefabricated section-splicing type forced centering device also comprises at least two sections of stand columns and a base pre-embedded in ground concrete, flange plates are arranged at two ends of each stand column, the stand columns are fixedly connected in series from top to bottom through the flange plates, the upper ends of the top stand columns are detachably connected with the forced centering disc through the flange plates, the lower ends of the bottom stand columns are detachably connected with the base through the flange plates, the stand columns are of a hollow structure, sand filling holes are formed in the side walls of the stand columns, and gravel can be filled into the stand columns through the sand filling holes. The utility model has simple structure and good stability, can not only adjust the observation height according to the field condition, but also recycle and effectively solve the problems of large centering error and resource waste.

Description

Prefabricated segmental splicing type forced centering device

Technical Field

The utility model relates to the technical field of engineering measurement, in particular to a prefabricated section splicing type forced centering device.

Background

In conventional construction survey, a control point is usually buried in the ground, a tripod is erected, and then devices such as a total station and a prism are centered and leveled for measurement. When the method is used for measurement, centering and leveling are needed, so that centering errors are introduced, the measurement precision is reduced, and the measurement efficiency is not high; the measuring device has the risk of collision and falling under the unattended condition. The existing forced centering device mostly adopts a trapezoidal pier body built by a reinforced concrete structure, and the forced centering device is buried on the top surface of concrete.

Patent CN201920719013.2 discloses a portable and compulsory centering device who dismantles, and the device has solved the big and extravagant problem of resource of centering error, but the device is supported by three vertical columns and connects, and stability is not high, takes place distortion easily.

Patent CN202020262165.7 discloses a movable and detachable forced centering device, which solves the problems of large centering error and resource waste, but the device cannot adjust the observation height of a control point properly according to the actual situation on site.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model aims to provide the prefabricated section splicing type forced centering device which is simple in structure, convenient to disassemble and assemble and good in stability.

In order to achieve the purpose, the utility model provides a prefabricated section-splicing type forced centering device which comprises a forced centering disc, wherein a central threaded hole is formed in the forced centering disc, an adapter used for being connected with measuring equipment is arranged in the central threaded hole, the device also comprises at least two sections of stand columns and a base pre-buried in ground concrete, flanges are arranged at two ends of each stand column, the stand columns are fixedly connected in series from top to bottom through the flanges, the upper ends of the top stand columns are detachably connected with the forced centering disc through the flanges, the lower ends of the bottom stand columns are detachably connected with the base through the flanges, the stand columns are of hollow structures, sand filling holes are formed in the side walls of the stand columns, and gravel can be filled into the stand columns through the sand filling holes.

In the scheme, the method comprises the following steps: two sections of upright columns are arranged between the forced centering plate and the base, and the upright columns have three sizes with the height of 30cm, 50cm or 70 cm. Can be combined by two upright posts with the same or different sizes, and provides a proper height for the measuring equipment during measurement.

In the scheme, the method comprises the following steps: the forced centering plate and the flange plate, the flange plate and the flange plate, and the flange plate and the base are fixedly connected through bolts and nuts. The bolt and nut connecting structure is simple and convenient to disassemble and assemble.

In the scheme, the method comprises the following steps: the base is disc-shaped, a second threaded hole corresponding to the first threaded hole is formed in the base, a bottom bolt penetrates through the second threaded hole in the base from bottom to top and is poured in concrete together with the base, and the flange plate at the lower end of the bottom stand column is connected with the base through the bottom bolt and is locked through a bottom nut. Bottom bolt and base are all pour in the concrete, are favorable to strengthening the fastening nature that base and ring flange are connected.

In the scheme, the method comprises the following steps: the lower part of the base is welded with a steel bar support leg, and the steel bar support leg and the base are embedded in ground concrete together. The steel bar support legs are beneficial for strengthening the firmness of the base in ground concrete.

The utility model has the beneficial effects that:

1. simple structure, with low costs, the main part of device is established ties fixedly from top to bottom by a plurality of stands and is formed, can adjust the whole height of assembling of stand according to the site conditions, provides a suitable height for measuring equipment when measuring, and between stand and the stand, between stand and the base member, all can dismantle through the ring flange and be connected between stand and the compulsory playback center dish, easy dismounting, recycle is convenient, under the prerequisite of ensureing that the centering error satisfies the requirement, the extravagant problem of resource has effectively been solved.

2. Be equipped with on the lateral wall of stand and irritate the sand hole, can fill gravel to the stand inside through irritating the sand hole, be favorable to improving the rigidity of stand, increase the stability of device.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the structure of the forced centering disk.

Fig. 3 is a schematic view of the structure of the flange.

Detailed Description

As shown in figures 1-3, a prefabricated section splicing type forced centering device mainly comprises a forced centering disc 2, at least two sections of upright columns 4 and a base 8 pre-buried in ground concrete 9.

The forced centering plate 2 can be in the shape of a disc with the diameter of 20cm and the thickness of 1cm, the base 8 can be in the shape of a disc with the diameter of 20cm and the thickness of 1cm, a central threaded hole is formed in the forced centering plate 2, and an adapter 1 used for being connected with measuring equipment is arranged in the central threaded hole.

The two ends of the upright post 4 are both provided with flange plates 6, and the upright posts 4 are fixed in series up and down through the flange plates 6. The upper end of the top upright post 4 is detachably connected with the forced centering disc 2 through a flange 6, and the lower end of the bottom upright post 4 is detachably connected with the base 8 through the flange 6. The stand 4 is hollow structure, is equipped with on the lateral wall of stand 4 and irritates sand hole 3, can be to the inside gravel of packing of stand 4 through irritating sand hole 3.

Preferably, two upright columns 4 are arranged between the forced centering plate 2 and the base 8, and the upright columns 4 have three dimensions of 30cm, 50cm or 70cm in height. Can be combined by two upright posts 4 with the same or different sizes, and provides a proper height for the measuring equipment during measurement.

Preferably, the forced centering plate 2 and the flange 6, the flange 6 and the flange 6, and the flange 6 and the base 8 are fixedly connected through bolts and nuts. The bolt and nut connecting structure is simple and convenient to disassemble and assemble.

Preferably, a plurality of first threaded holes are uniformly distributed in the flange plate 6, the base 8 is disc-shaped, second threaded holes corresponding to the first threaded holes are formed in the base 8, bottom bolts 7 penetrate through the second threaded holes in the base 8 from bottom to top and are poured in the concrete 9 together with the base 8, and the flange plate 6 at the lower end of the bottom upright post 4 is connected with the base 8 through the bottom bolts 7 and is locked through the bottom nuts 5. Bottom bolt 7 and base 8 are all pour in concrete 9, are favorable to strengthening the fastening nature that base 8 and ring flange 6 are connected.

Preferably, a reinforcing bar support 801 is welded to a lower portion of the base 8, and the reinforcing bar support 801 is embedded in the ground concrete 9 together with the base 8. The rebar legs 801 facilitate strengthening the foundation 8 in the ground concrete 9.

Claims (5)

1. The utility model provides a centering device is forced to prefabricated segmentation concatenation formula, is including forcing centering dish (2), be equipped with central screw hole on forcing centering dish (2), be equipped with adapter (1) that are used for being connected with measuring equipment in the central screw hole, its characterized in that: still include two section at least stand (4) and pre-buried base (8) in ground concrete (9), the both ends of stand (4) all are equipped with ring flange (6), and it is fixed to establish ties from top to bottom through ring flange (6) in each stand (4), and the upper end of top stand (4) is passed through ring flange (6) and is dismantled with compulsory playback center dish (2) and be connected, and the lower extreme of bottom stand (4) passes through ring flange (6) and can dismantle with base (8) and be connected, stand (4) are hollow structure, are equipped with on the lateral wall of stand (4) and irritate sand hole (3), can be to the inside gravel of filling of stand (4) through irritating sand hole (3).

2. The prefabricated segmented splicing type forced centering device according to claim 1, wherein: two sections of upright columns (4) are arranged between the forced centering disc (2) and the base (8), and the upright columns (4) have three sizes with the height of 30cm, 50cm or 70 cm.

3. The prefabricated segmented splicing type forced centering device according to claim 1, wherein: the forced centering plate (2) and the flange plate (6), the flange plate (6) and the flange plate (6), and the flange plate (6) and the base (8) are fixedly connected through bolts and nuts.

4. The prefabricated segmented splicing type forced centering device according to claim 3, wherein: evenly distributed is provided with a plurality of first screw holes on ring flange (6), base (8) are discoid, be equipped with the second screw hole that corresponds with first screw hole on base (8), second screw hole on bottom bolt (7) from down up passing base (8) to pour in concrete (9) simultaneously with base (8), ring flange (6) and base (8) of bottom stand (4) lower extreme are connected through bottom bolt (7), and lock through bottom nut (5).

5. The prefabricated segmented splicing type forced centering device according to claim 4, wherein: the lower part of the base (8) is welded with a steel bar support leg (801), and the steel bar support leg (801) and the base (8) are embedded in the ground concrete (9) together.

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