Forced centering device

Abstract

Forced centering device, characterized by a base (1) and a pillar (2), wherein the pillar (2) is fixedly arranged on the base (1) and the pillar (2) is configured to connect a scale plate (3); the scale plate (3) is provided with a level indicator for indicating the flatness of the scale plate (3); the level indicator comprises a first level indicator (31) and a second level indicator (32), wherein the level indicator is strip-shaped; the first level indicator (31) and the second level indicator (32) are arranged in the same plane; and the axis of the first level indicator (31) is perpendicular to the axis of the second level indicator (32).

Description

Technical area

[0001] The present utility model relates to the field of technical measurement, in particular to a forced centering device. background

[0002] In the construction of subways, it is generally necessary to embed a forced centering device into the ground as the basic observation point for measurements, use a tripod to support and fix the measuring instrument, and then accurately align the instrument with the measuring mark and ensure the scale plate perpendicularity of the instrument; or use the instrument with a forced alignment mark to conduct observations after alignment and leveling.

[0003] However, when observing the observation point at the edge of the subway foundation pit, due to the construction height, it is necessary to install the measuring device at a higher position to observe the edge and inside of the foundation pit. If the forced centering device is buried in the ground at the edge of the subway foundation pit, the probability of damage to the forced centering device, such as construction machinery or workpieces, increases due to the complex construction site environment. At the same time, the risk of settlement and tilt at the edge of the subway foundation pit is also high. It is necessary to pay attention to the change in the position of the observation point from time to time, and the forced centering device buried in the ground at the edge of the subway foundation pit also makes it difficult to observe the change in the position of the observation point.In addition, due to the complex site environment, the calibration of the centering device by the surveying personnel causes inconvenience to the work of the surveying personnel. Description of the utility model

[0004] The purpose of the present utility model is to provide a forced centering device that can reduce the probability of damage to the forced centering device when embedding it at the edge of the foundation pit, in order to overcome the problem in the prior art that the forced centering device is embedded in the ground at the edge of the foundation pit and the probability of damage to the forced centering device, for example, by construction machinery or workpieces, is increased due to the complicated construction site environment.

[0005] The present utility model relates to a forced centering device comprising a base and a pillar, wherein the pillar is fixedly arranged on the base and the pillar is configured to connect a scale plate.

[0006] By installing the base at the edge of the subway foundation pit, the base can evenly distribute the load at the edge of the foundation pit over a larger area, reduce the pressure on the unit area of ​​the soil, and reduce the risk of settlement or tilt of the edge of the subway foundation pit. At the same time, the base can provide solid support for the piers, improve the stability of the foundation pit edge, reduce the risk of collapse of the edge of the subway foundation pit due to soil loosening or movement, and thus prevent displacement of the piers. The base can be used as a construction platform to facilitate the work of construction personnel and construction machinery on the base. The scale plate is installed on the ground above the pier and base instead of being buried in the ground, reducing the probability of the scale plate being damaged by construction machinery or workpieces.The height of the base and pillar relative to the ground makes the scale plate more visible, facilitating observation for observers. The base and pillar have greater stability relative to the edge of the subway foundation pit, providing more stable support for the scale plate, improving the scale plate's ability to maintain horizontality, and thus increasing the accuracy of observation. Therefore, this arrangement can not only reduce the possibility of damage to the forced centering device, such as construction equipment or the workpiece, but also facilitate observation by observers and facilitate the operation and maintenance of the forced centering device.

[0007] Preferably, the pillar and the base may be formed by integrally pouring concrete, or the pillar and the base may be firmly connected to each other by bolts or the like.

[0008] Preferably, a center point of a cross section of the pillar may be located at a center point of a surface of the base.

[0009] Preferably, the center of the scale plate can be arranged at the center of the pillar cross-section.

[0010] Preferably, the scale plate can be firmly attached to the pillar by means of screws, or the scale plate can be snapped onto the pillar.

[0011] Preferably, the base may be a rectangular cuboid or a cube or the like, and the pillar may be a cylinder or a rectangular cuboid or the like.

[0012] The base is further provided with a staircase to connect the top and bottom surfaces of the base, with the staircase being provided with railings on both sides.

[0013] Providing a staircase allows the operator to comfortably move between the base surface and the ground, facilitating the operation of the forced centering device. Providing railings on both sides of the staircase improves operator safety when ascending and descending.

[0014] The surface of the base is rectangular, and the length of the sides of the surface is 1.2 m to 1.5 m, preferably 1.3 m.

[0015] By specifying the side length of the base surface, the operator has sufficient space to work on the base surface, improving operating comfort. Setting the side length of the base surface at 1.2 m to 1.5 m avoids an excessively large surface area, which would result in a large base footprint and cause inconvenience during construction, and allows for better control of the base construction cost.

[0016] The surface of the base is also provided with a protective strip whose height is 1.1 m to 1.3 m, preferably 1.2 m.

[0017] Installing the protective strip can reduce the risk of the operator falling from the base surface and improve the safety of the structure. Setting the height of the protective strip at 1.1 m to 1.3 m can improve the safety of the structure and reduce the barrier effect of the protective strip on the scale plate, which is beneficial for the observation of the scale plate by the observation device.

[0018] The pillar consists of a PE pipe into which concrete is poured.

[0019] Preferably, the PE pipe can also be provided as a PVC pipe.

[0020] The height of the pillar is 1.3 m to 1.4 m, preferably 1.35 m.

[0021] If the pillar is too low, the likelihood of the scale plate being blocked by the safety railing increases. If the pillar is too high, operation becomes difficult for the operator. Adjusting the height of the pillar can reduce the likelihood of the scale plate being blocked by the safety railing and improve operation for the operator.

[0022] The scale plate is provided with a level indicator to show the flatness of the scale plate.

[0023] By adjusting the level indicator, the flatness of the scale plate installation can be improved and the accuracy of observation can be improved when the scale plate is placed on the pier. At the same time, the level indicator can be used to indicate changes in the flatness and inclination of the forced centering device, facilitating the observation of the observation equipment.

[0024] The level indicator comprises a first level indicator and a second level indicator, wherein the level indicator is strip-shaped; the first level indicator and the second level indicator are arranged in the same plane; and the axis of the first level indicator is perpendicular to the axis of the second level indicator.

[0025] When the scale plate is tilted in a direction parallel to the axis of the first horizontal indicator, the first horizontal indicator has a poor display effect on the degree of inclination of the scale, while the second horizontal indicator, whose axis is perpendicular to the first horizontal indicator, has a good display effect. Therefore, by arranging the first horizontal indicator and the second horizontal indicator so that their axes are perpendicular to each other, the inclination of the scale plate can be displayed in any direction, providing a more accurate reference for observation.

[0026] Preferably, the first level indicator and the second level indicator may each be provided as a long leveling tube, inclinometer, spirit level or the like.

[0027] The scale plate is also equipped with a calibrator for calibrating the flatness of the level indicator.

[0028] By providing a calibrator to calibrate the level indicator level, it is possible to calibrate the level indicator according to the actual situation, thereby improving the probability of maintaining the level indicator with high accuracy.

[0029] Preferably, the calibrator is a threaded rod arranged at each end of the first level indicator and the second level indicator, the threaded rod being connected to the pillar via the scale plate.

[0030] Preferably, the calibrator can also be a calibration pin or the like.

[0031] The pillar is also provided with a removable guard, and the scale plate is arranged between the pillar and the guard, ie the scale plate is spaced from the guard.

[0032] By providing the protective device, the protective device is configured to shield the first level indicator and the second level indicator from direct light, thereby reducing the probability that the first level indicator and the second level indicator are directly illuminated by light and improving the service life of the first level indicator and the second level indicator.

[0033] Preferably, the protective device may be a protective cover, a protective plate or the like.

[0034] Compared to the prior art, the present utility model offers the following advantages.

[0035] The present utility model relates to a positive centering device provided with a base and a pillar. The pillar is fixedly mounted on the base and configured to connect a scale plate. This arrangement not only reduces the possibility of damage to the positive centering device, such as from the construction machine or the workpiece, but also facilitates observation by observers, as well as the operation and maintenance of the positive centering device. Short description of the drawings Fig. 1 is a schematic main view of a forced centering device according to Embodiment 1 of the present utility model. Fig. 2 is a schematic plan view of a forced centering device according to Embodiment 1 of the present utility model. Fig. 3 is an enlarged schematic main view at A in Fig. 1 of the present utility model. Fig. Figure 4 is an enlarged schematic plan view of A in Fig. 1 of the present utility model. Fig. 5 is a schematic main view of a forced centering device according to Embodiment 2 of the present utility model. Fig. 6 is an enlarged schematic main view at B in Fig. 5 of the present utility model. Reference symbol:

[0036] 1-Base, 2-Pillar, 3-Scale plate, 31- First level indicator, 32- Second level indicator, 33-Calibrator, 4-Protection device, 5-Protection rail, 6-Rail, 7-Staircase. Detailed description

[0037] The present utility model will be described in more detail below using specific embodiments. However, the scope of the above-described subject matter of the present utility model is not limited to the following examples, and the present utility model is intended to fall within the scope of the present utility model.

[0038] In the description of the specific embodiments of the present utility model, the terms "top," "bottom," "left," "right," "center," "inside," "outside," and the like, when used, refer to any orientation or positional relationship unless otherwise specified, and are to be understood as expressions based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product / device / equipment of the present utility model is conventionally used. These terms for orientation or positional relationship are merely intended to facilitate the description of aspects of the present utility model or to simplify the description of specific embodiments for those skilled in the art to quickly understand the aspects.They do not imply that a particular device / part / element must have a particular orientation or be constructed and operated in a particular positional relationship and are therefore not to be interpreted as a limitation of the present utility model.

[0039] Furthermore, the presence of the terms "horizontal," "vertical," "overhanging," "parallel," and the like does not imply that the respective device / component / element must be absolutely horizontal or vertical, or overhanging, or parallel, but that they may be slightly inclined or offset. Where "horizontal" simply means that the direction is more horizontal than "vertical," this does not mean that the structure must be completely horizontal, but that it may be slightly inclined. Alternatively, it can simply be assumed that the respective means / parts / elements arranged in a "horizontal," "vertical," "overhanging," "parallel" direction, etc., may be arranged with a deviation of ± 10%, preferably ± 8%, preferably ± 6%, preferably ± 5%, preferably ± 4% relative to the respective direction.As long as the corresponding device / part / element is within the error / deviation range, its function can continue to be fulfilled in the solution of the present utility model.

[0040] Furthermore, the terms “first,” “second,” “third,” and the like in such expressions are intended solely to distinguish between descriptions of the same or similar elements and are not intended to emphasize or imply a relative importance of any element.

[0041] Furthermore, in the description of the embodiments of the present utility model, "some," "a plurality," and "plural" mean at least two. It may be 2, 3, 4, 5, 6, 7, 8, 9, etc., and it may be more than 9.

[0042] Furthermore, in the description of the technical solution of the present utility model, unless expressly stated / restricted / limited otherwise, the terms "providing," "fastening," "connecting," "connected," "provided with," "presenting," and "arranging" are to be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection, and it may be a connecting means commonly used in technology, such as welding, riveting, bolts, screws, etc. The connection may be a mechanical connection, an electrical connection, or a communication connection. They may be connected directly or indirectly via an intermediate medium, and there may be communication between the two elements. Embodiment 1

[0043] As in the Fig. 1 to 4, a forced centering device comprises a base 1 and a pillar 2. The pillar 2 is fixedly arranged on the base 1. The pillar 2 is configured to connect a scale plate 3.

[0044] By placing the base 1 at the edge of the subway foundation pit, the base 1 can evenly distribute the load at the edge of the foundation pit over a larger area, reduce the pressure on the unit area of ​​the soil, and reduce the risk of settlement or tilt of the edge of the subway foundation pit. At the same time, the base 1 can firmly support the piers 2, improve the stability of the edge of the excavation, reduce the risk of collapse of the edge of the subway excavation due to soil loosening or movement, and thus prevent displacement of the piers 2. The base 1 can be used as a construction platform to facilitate the work of construction personnel and construction machinery on the base 1. The scale plate is arranged on the ground across the pier 2 and the base 1, instead of burying the scale plate 3 in the ground, thereby reducing the probability of the scale plate 3 being damaged by construction machinery or workpieces.Due to the height of the base and pillar 2 relative to the ground, the visibility of the scale plate is higher, which is beneficial for observers. The base 1 and pillar 2 have higher stability relative to the edge of the subway foundation pit, which can provide more stable support for the scale plate 3, contribute to improving the ability of the scale plate 3 to maintain the horizontal degree, and thus improve the accuracy of observation. Therefore, this arrangement can not only reduce the possibility of damage to the forced centering device, such as from construction machinery or a workpiece, but also facilitate observation by observers and facilitate the operation and maintenance of the forced centering device.

[0045] Furthermore, the pillar 1 and the base 2 are cast in one piece from concrete, and the pillar 2 may be firmly connected to the base 1 by bolts or the like.

[0046] Furthermore, base 1 is a rectangular parallelepiped and pillar 2 is a cylinder. The center of the cross-section of pillar 2 can be determined at the center of the surface of base 1.

[0047] In addition, the scale plate 3 has a circular shape, and the center of the scale plate 3 may be located in the center of the cross section of the column of the pillar 2.

[0048] Furthermore, the scale plate 3 can be firmly attached to the pillar 2 by means of screws, or the scale plate 3 can be connected to the pillar 2 in a lockable manner.

[0049] Furthermore, the base 1 may be a rectangular cuboid or a cube or the like, and the pillar 2 may be a cylinder or a rectangular cuboid or the like.

[0050] The base 1 is further provided with a staircase 7 to connect the upper and lower surfaces of the base 1, the staircase 7 being provided with railings 6 on both sides.

[0051] By providing steps 7, the operator can comfortably move between the surface of the base 1 and the ground, facilitating the operation of the forced centering device. By providing railings 6 on both sides of the steps 7, the operator's safety when ascending and descending the steps 7 can be improved.

[0052] The length of the side of the surface of base 1 is 1.3 m.

[0053] The rectangular shape of the base 1 surface allows the side length of the surface to be 1.3 m, providing the operator with sufficient space to operate the base 1 surface, improving ease of use. At the same time, the surface area of ​​the base 1 is avoided from being too large, causing the base 1 to occupy a large area and affect the design, and the construction cost of the base 1 can be easily controlled.

[0054] The surface of the base 1 is also provided with a railing 6, the height of which is 1.2 m.

[0055] By installing the railing 5, the risk of the operator falling from the surface of the base 1 onto the surface of the base 1 can be reduced and the safety of the structure can be improved. By setting the height of the railing 5 to 1.2 m, the safety of the structure can be improved and the barrier effect of the railing 5 against the scale plate 3 can be reduced, which is beneficial for the observation devices for observing the scale plate 3.

[0056] Pillar 2 includes a PE pipe into which concrete is poured.

[0057] The height of pillar 2 is 1.35 m.

[0058] If the height of pillar 2 is too low, the probability of the scale plate 3 being blocked by the railing 5 increases. If the height of pillar 2 is too high, operation becomes inconvenient for the operator. Setting the height of pillar 2 to 1.35 m can reduce the probability of the scale plate 3 being blocked by the railing 5 and improve the operator's convenience.

[0059] The scale plate 3 is provided with a first level indicator 31 and a second level indicator 32. The first level indicator 31 and the second level indicator 32 are arranged on the same plane. The level indicator is in the shape of a bar. The axis of the first level indicator 31 is perpendicular to the axis of the second level indicator 32. The first level indicator 31 and the second level indicator 32 are configured to indicate the flatness of the scale plate 3.

[0060] By providing the first level indicator 31 and the second level indicator 32, it is possible to improve the flatness of the installation of the scale plate 3 and the accuracy of observation when the scale plate 3 is installed on the pier 2. At the same time, the first level indicator 31 and the second level indicator 32 can be used to indicate the flatness and inclination change of the forced centering device to facilitate observation by the observation device.

[0061] When the scale plate 3 is tilted in a direction parallel to the first horizontal indicator 31, the first horizontal indicator 31 has a poor display effect on the degree of inclination of the scale, and the second horizontal indicator 32 having an axis direction perpendicular to the first horizontal indicator 31 has a good display effect, so the inclination of the scale plate 3 in any direction can be displayed by arranging the first horizontal indicator 31 and the second horizontal indicator 32 so that their axes are perpendicular to each other, thereby providing a more accurate reference for observation.

[0062] Furthermore, the first level indicator 31 and the second level indicator 32 are long level tubes.

[0063] The scale plate 3 is further provided with a calibrator 33 for calibrating the flatness of the first and second level indicators 31, 32.

[0064] Furthermore, the calibrator 33 is a threaded rod arranged at each end of the first level indicator 31 and the second level indicator 32, the threaded rod being connected to the pillar 2 via the scale plate 3.

[0065] By providing the calibrator 33 for calibrating the flatness of the first level indicator 31 and the second level indicator 32, it is possible to calibrate the first level indicator 31 and the second level indicator 32 according to the actual situation, thereby increasing the probability that the first level indicator 31 and the second level indicator 32 are maintained with high accuracy. Embodiment 2

[0066] The present embodiment provides a forced centering device whose structure is substantially the same as that of Embodiment 1, except that, as shown in the Fig. 5 and Fig.6, the pillar 2 is also removably provided with a protective device 4 and the scale plate 3 is arranged between the pillar 2 and the protective device 4, ie the scale plate 3 is spaced from the protective device 4.

[0067] Furthermore, the protective device 4 is a cover.

[0068] By providing the protective device 4, the protective device 4 is configured to shield the first level indicator 31 and the second level indicator 32 from direct light, thereby reducing the probability that the first level indicator 31 and the second level indicator 32 are directly illuminated by light and improving the service life of the first level indicator 31 and the second level indicator 32.

[0069] The above description is merely a preferred embodiment of the utility model and is not intended to limit the utility model. All modifications, equivalents, and improvements within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

[0070] The present utility model relates to the field of technical measurement, and more particularly to a forced centering device comprising a base and a pillar, the pillar being fixedly mounted on the base, and the pillar being configured to connect a scale plate. This arrangement allows the scale plate to be positioned on the ground via the pillar and base, rather than burying the scale plate in the ground, reducing the likelihood of damage to the scale plate by construction machinery or workpieces. The height of the base and pillar relative to the ground increases the visibility of the scale plate, which is beneficial to observers.The base and pillar have higher stability relative to the edge of the subway foundation pit, which provides more stable support for the scale plate, helps improve the ability of the scale plate to maintain the horizontal or vertical degree, and thus improves the accuracy of observation.

Claims

[1] Forced centering device, characterized by a base (1) and a pillar (2), wherein the pillar (2) is fixedly arranged on the base (1) and the pillar (2) is configured to connect a scale plate (3); the scale plate (3) is provided with a level indicator for indicating the flatness of the scale plate (3); the level indicator comprises a first level indicator (31) and a second level indicator (32), wherein the level indicator is strip-shaped; the first level indicator (31) and the second level indicator (32) are arranged in the same plane; and the axis of the first level indicator (31) is perpendicular to the axis of the second level indicator (32). [2] Forced centering device according to claim 1, characterized by that the base (1) is further provided with a staircase for connecting the upper and lower surfaces of the base (1), the staircase being provided with rails on both sides. [3] Forced centering device according to claim 1, characterized by that the surface of the base (1) is rectangular, the length of the sides of the surface being 1.2 m to 1.5 m. [4] Forced centering device according to claim 1, characterized by that the surface of the base (1) is further provided with a protective rail whose height is 1.1 m to 1.3 m. [5] Forced centering device according to claim 1, characterized by that the pillar (2) comprises a PE pipe into which concrete is poured. [6] Forced centering device according to claim 1, characterized by that the height of the pillar (2) is between 1.3 m and 1.4 m. [7] Forced centering device according to claim 1, characterized by that the scale plate (3) is additionally provided with a calibrator (33) for calibrating the flatness of the level indicator. [8] Forced centering device according to claim 1, characterized bythat the pillar (2) is also provided with a removable protective device (4) and the scale plate (3) is arranged between the pillar (2) and the protective device (4).

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