CN111811491A - Forced centering device capable of freely lifting, recycling and integrating operation - Google Patents
Forced centering device capable of freely lifting, recycling and integrating operation Download PDFInfo
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- CN111811491A CN111811491A CN202010725431.XA CN202010725431A CN111811491A CN 111811491 A CN111811491 A CN 111811491A CN 202010725431 A CN202010725431 A CN 202010725431A CN 111811491 A CN111811491 A CN 111811491A
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- steel sleeve
- centering device
- recycling
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- concrete pier
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/02—Means for marking measuring points
- G01C15/06—Surveyors' staffs; Movable markers
- G01C15/08—Plumbing or registering staffs or markers over ground marks
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Abstract
The invention discloses a forced centering device capable of freely lifting, recycling and performing integrated operation, which comprises a concrete pier, a steel sleeve, a steel pipe column, an instrument erection platform and a centering screw, wherein the concrete pier is arranged on the steel sleeve; the lower part of the concrete pier is buried underground, a circular lifting channel is formed in the center of the concrete pier along the axial direction of the concrete pier, the steel sleeve is embedded from the top opening of the circular lifting channel, and the steel pipe column is matched with the inner diameter of the steel sleeve and can extend into the steel sleeve and the circular lifting channel and slide up and down; the top of the steel sleeve is provided with a plurality of threaded holes in different directions of the circumferential surface of the steel sleeve, and each threaded hole is screwed with a nut matched with the threaded hole; an instrument erection platform is fixed at the top end of the steel pipe column, and centering screws are arranged on the top surface of the instrument erection platform. The invention has the advantages of free lifting, recycling, simple processing and manufacturing (shaping and manufacturing), high construction and measurement precision, integrated operation, effective reduction of measuring personnel, obvious improvement of measurement efficiency and the like.
Description
Technical Field
The invention relates to the technical field of measuring instruments, in particular to a forced centering device capable of freely lifting, recycling and performing integrated operation.
Background
With the acceleration of urban construction pace, a batch of large and super-large projects are carried out at the same time, and accordingly, the area and the depth of the engineering foundation pit are greatly increased compared with the prior art. However, more and more irregular foundation pits with different shapes, and the project of sleeving the pits in the pits or connecting the pits with the pits make the project period which is originally large in workload and high in precision requirement more tense, the measurement task is heavier, and the requirements for construction measurement and foundation pit monitoring work are higher and the difficulty is higher.
The measurement means conventional in the art are tripod measurements and conventional forced centering devices. The method for erecting the tripod and measuring the method is to erect the instrument on the wooden tripod, perform centering and leveling by adjusting the height of the tripod, perform rear view orientation and observe, but the method has the defects that the instrument erection each time can generate point aligning errors (part of fields are inconvenient for erecting the instrument and have low precision), each set of instrument at least needs 2-4 measuring personnel (the required personnel are more, the labor cost is high), the operation efficiency is not high and the like; the centering device is just utilized to the tradition, the disposable pier of concrete preparation, at the pre-buried screw in platform top, be used for fixed instrument, the flattening foot spiral that utilizes instrument self carries out the flattening, however, because the device highly fixed, produce easily and shelter from, easy the collision is in the in-process of on-the-spot hoist and mount, cause unable observation, can't an instrument promptly, a plurality of backsight or many instruments, the operation of integrating of a plurality of backsight, and it is disposable, the cost is high and unable used cyclically, both caused the waste to building material, produce building rubbish, also can not effectively reduce the human cost.
In addition, at present, project foundation pits are deeper and deeper, 20-30m deep foundation pits are common, deep foundation pits are large in monitoring projects and large in workload, and the requirement on monitoring precision is higher and higher.
Therefore, how effectively solve above-mentioned problem, provide a force centering device, but free lift (according to observing needs nimble adjustment sight height, the time spent not highly falls to minimumly, avoid being hoisted the collision, cause follow-up unable observation), recycle and can integrate the operation (an instrument, a plurality of back views or many instruments, a plurality of back views are surveyd simultaneously, and only need 1 ~ 2 people can accomplish all operations), can also better satisfy the high accuracy monitoring to the deep basal pit, just become a technical problem that technical staff in the field need attack and conquer.
Disclosure of Invention
Therefore, in view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a forced centering device capable of freely lifting, recycling and performing integrated operations, and the forced centering device has the following specific technical solutions:
a forced centering device capable of freely lifting, recycling and performing integrated operation comprises a concrete pier, a steel sleeve, a steel pipe column, an instrument erection platform and a centering screw; the lower part of the concrete pier is buried underground, a circular lifting channel is formed in the center of the concrete pier along the axial direction of the concrete pier, the steel sleeve is embedded from the top opening of the circular lifting channel, and the steel pipe column is matched with the inner diameter of the steel sleeve and can extend into the steel sleeve and the circular lifting channel and slide up and down; a plurality of threaded holes are formed in the top of the steel sleeve in different directions of the circumferential surface of the steel sleeve and are positioned above the opening in the top of the circular lifting channel, a nut matched with the threaded holes is screwed in each threaded hole, and the nut can be continuously screwed into the threaded holes to tightly push the outer wall of the steel pipe column; the top end of the steel pipe column is fixedly provided with the instrument erection platform with the outer diameter larger than the inner diameter of the steel sleeve, and the centering screw for fixing the measuring instrument is arranged at the center of the top surface of the instrument erection platform.
And erecting one or more measuring instruments and a base containing a prism on the top surface of the instrument erection platform, and performing leveling by adopting a self leveling foot screw, so that integrated operation can be performed.
By adopting the technical scheme, the forced centering device capable of freely lifting, recycling and performing integrated operation is provided, the device freely lifts the steel pipe column by utilizing the circular lifting channel at the center of the concrete pier, freely lifts and fixes the steel pipe column by virtue of the steel sleeve and the nut, the measuring instrument and the base containing the prism are erected on the instrument erection platform at the top end of the steel pipe column, the centering screws on the instrument erection platform are used for fixing, and then the leveling feet of the measuring instrument are used for spirally leveling, so that the integrated observation can be conveniently and quickly performed.
The concrete pier, the steel pipe column and the steel sleeve structure have the characteristics of good mechanical strength performance, portability, flexible disassembly and assembly, convenience in manufacture, wide field of view for randomly adjusting the height, low price and the like, are convenient to store, can be continuously used for opening land blocks and other subsequent projects after the same project, also have the characteristic of recycling, avoid the waste of concrete, have considerable economic benefit and accord with lean construction and green construction concepts.
By using the forced centering device, an observer can look back at a plurality of directions at any time, the dependence on a tripod and a centering rod is eliminated, and only a measuring instrument and a base containing a prism are erected on the forced centering device, so that the forced centering device is safe, convenient, efficient and high in precision. That is to say, under the prerequisite of guaranteeing the precision, this force centering device has both effectively practiced thrift the cost (the cost of manpower, the cost of refabrication device), has improved the measurement operating efficiency again.
On the basis of the technical scheme, the invention can be improved as follows:
preferably, the bottom end of the concrete pier is fixed on a cushion layer in the ground by pouring.
Has the advantages that: the bed course can further guarantee that the concrete mound can firmly be fixed in the underground, and the existence of bed course can not influence the recycling of concrete mound in addition, and when needs had enough to meet the need the concrete mound and circulate, the staff digs out and buries concrete mound part and bed course in the soil, then with the direct breakage of bed course knock off can.
Preferably, a screw protection cap is mounted on the centering screw.
Has the advantages that: this device protects the centering screw on the steel-pipe column top instrument erects platform through preparation screw protective cap, prevents that the centering screw from arousing the corrosion because of sleet, concrete overflow spill etc. to and slight factor such as touching, and finally leads to the unable fixed measuring instrument's of centering screw the condition to appear.
Preferably, the plane that several screw hole is constituteed is parallel with the horizontal plane, makes steel-pipe column atress balanced all around, and the nut can firmly push up the steel-pipe column, restricts its decline.
Preferably, the number of the threaded holes and the number of the nuts are four, and the four threaded holes are uniformly distributed on the circumferential surface of the top of the steel sleeve.
Has the advantages that: the steel pipe column is freely lifted and fixed by utilizing the steel sleeve and the nuts in four directions, and is firm and reliable.
Preferably, the length of the circular lifting channel is greater than or equal to the length of the steel pipe column.
Has the advantages that: by adopting the technical scheme, under the condition that the forced centering device is not used, the steel pipe column can be completely descended into the circular lifting channel of the concrete pier, so that damage caused by collision of hoisting and other objects is avoided; when the height-adjustable steel pipe column is used, the height of the steel pipe column can be flexibly and freely adjusted according to needs, namely, the height of a measuring instrument and the height of a rearview mirror are adjusted.
Preferably, two thirds of the concrete piers are buried in the ground to ensure that they are firmly fixed.
The forced centering device can be freely lifted, recycled and operated in an integrated manner, an observer can see a plurality of directions at any time, compared with a conventional tripod measurement and traditional forced centering device, the forced centering device obviously reduces the concrete consumption and the configuration of personnel and instruments, ensures the construction measurement precision, realizes the construction measurement integrated operation, obviously improves the measurement efficiency, avoids building waste as much as possible due to recycling, and accords with the construction concept of green construction and lean construction.
The forced centering device is suitable for all foundation pit projects, particularly for foundation pit projects with large foundation pit areas and irregular shapes (pit-in-pit and pit-with-pit), the economic benefit is better, and in addition, the forced centering device can also be better applied to foundation pit monitoring and is worth being popularized and applied in similar projects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a front view of a forced centering device capable of freely lifting, recycling and integrated operation according to the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Fig. 3 is an enlarged schematic view of the structure of part B in fig. 1.
Fig. 4 is a plan view of a forced centering device capable of freely lifting, recycling and integrating operations according to the present invention.
Wherein, in the figure,
the method comprises the following steps of 1-concrete pier, 2-steel sleeve, 3-steel pipe column, 4-instrument erection platform, 5-centering screw, 6-circular lifting channel, 7-nut, 8-cushion layer and 9-screw protective cap.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
A forced centering device capable of freely lifting, recycling and integrating according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 4.
Example (b):
the forced centering device can be freely lifted, recycled and operated in an integrated mode, is suitable for all foundation pit projects, particularly has better economic benefit for foundation pit projects with large foundation pit areas and irregular shapes (pits in pits and pits with pits), and can be better applied to foundation pit monitoring.
As shown in fig. 1 to 4, the forced centering device includes a concrete pier 1, a steel casing 2, a steel pipe column 3, an instrument erection platform 4, and a centering screw 5.
In particular, the method comprises the following steps of,
as shown in fig. 1, two thirds of the concrete pier 1 is buried underground, a circular lifting channel 6 is arranged at the center of the concrete pier 1 along the axial direction, the steel casing 2 is embedded from the top opening of the circular lifting channel 6, and the steel pipe column 3 is matched with the inner diameter of the steel casing 2 and can extend into the steel casing 2 and the circular lifting channel 6 and slide up and down; the top of the steel sleeve 2 is provided with a plurality of threaded holes in different directions of the circumferential surface of the steel sleeve, the threaded holes are positioned above the top opening of the circular lifting channel 6, a nut 7 matched with the threaded holes is screwed in each threaded hole, and the outer wall of the steel pipe column 3 can be tightly propped up by continuously screwing the nut 7 into the threaded holes.
When the forced centering device is used, the height of the steel pipe column 3, namely the instrument and the rearview height, can be flexibly and freely adjusted according to needs. Specifically, the steel pipe column 3 can freely lift in the steel sleeve 2 and the circular lifting channel 6, and meanwhile, the steel sleeve 2 and the plurality of nuts 7 are used for tightly jacking the steel pipe column 3 for free lifting and fixing.
Meanwhile, the concrete piers 1, the steel pipe columns 3 and the like in the forced centering device can be circularly used, so that the waste of concrete is avoided, the economic benefit is considerable, and the concept of lean construction and green construction is met.
Further, the bottom end of the concrete pier 1 is cast and fixed to the under-ground mat 8, so that it can be more stably fixed. When the concrete pier 1 needs to be recycled, the concrete pier 1 with the cushion layer 8 is dug out, and then the cushion layer 8 is directly broken and knocked off. The thickness of the cushion layer 8 is generally about 0.1 m.
Further, as shown in fig. 3, the number of the screw holes and the nuts 7 is preferably four, and four screw holes are uniformly arranged on the circumferential surface of the top of the steel sleeve 2. That is, the steel pipe column 3 is pressed and securely fixed by the nuts 7 in four different directions to ensure that it does not fall during observation.
In this example, the total length of the concrete pier 1 is 1.5m, wherein 1m is located below the ground and 0.5m is located above the ground.
As shown in fig. 1, 2 and 4, an instrument erection platform 4 with an outer diameter larger than the inner diameter of the steel casing 2 is fixed at the top end of the steel pipe column 3, and a centering screw 5 for fixing a measuring instrument is arranged at the center of the top surface of the instrument erection platform 4.
The staff erects the instrument to measuring instrument and the base that contains the prism and erects on the platform 4, and centering screw 5 on the platform is fixed the instrument, then comes the flattening with the flattening foot spiral of instrument self, and the cooperation has adjusted the steel-pipe column 3 of fixed position, can convenient, quick observation.
By adopting the device, an observer can look back at a plurality of directions at any time, the dependence on a tripod and a centering rod is eliminated, and only the measuring instrument and the base are required to be erected on the forced centering device, so that the device is safe, convenient, efficient and high in precision.
In an embodiment of the present invention, as shown in fig. 2, a screw protection cap 9 is further installed on the centering screw 5 to prevent the centering screw 5 from rusting due to rain, snow, concrete overflow, and the like, and from being slightly touched, which may eventually cause the centering screw 5 not to fix the instrument.
In a specific embodiment of the invention, the length of the circular lifting channel 6 is greater than or equal to that of the steel pipe column 3, so that the steel pipe column 3 can be completely lowered into the circular lifting channel 6 of the concrete pier 1 under the condition that the forced centering device is not used, and damage caused by collision of hoisting and other objects is avoided.
The forced centering device does not need to protect steel plate meshes on the periphery after being installed, so that the foundation pit and side slope field is not occupied too much as far as possible, and only 'measuring datum points do not need to touch' are written on the concrete pier 1 or the ground.
The concrete construction and use processes of the invention are as follows:
the construction process comprises the following steps: digging a pit at a selected position, paving a cushion layer 8 at the bottom of the pit, fixing the concrete pier 1 and the cushion layer 8, burying three-third of the two-way soil of the concrete pier 1, and inserting the steel pipe column 3 into the circular lifting channel 6 of the concrete pier 1; when other follow-up projects need to recycle and reuse the concrete piers 1 and the steel pipe column 3, the steel pipe column 3 can be firstly drawn out from the circular lifting channel 6, then the concrete piers 1 with the cushion layers 8 are dug out, then the cushion layers 8 are directly broken and knocked off, and then the concrete piers 1 and the steel pipe column 3 can be transferred to new positions.
The use process comprises the following steps: the circular lifting channel 6 of the concrete pier 1 is utilized to freely lift the steel pipe column 3, the steel sleeve 2 and the four nuts 7 are utilized to freely lift and fix, a measuring instrument and a base (including a prism) are erected on an instrument erection platform 4 at the top end of the steel pipe column 3, a centering screw 5 on the instrument erection platform 4 is used for fixing the measuring instrument, then the leveling foot of the measuring instrument is used for leveling in a spiral mode, and the observation can be conveniently and rapidly carried out.
The forced centering device can generate obvious economic benefits, such as:
in a certain project, 8 forced centering devices in the invention are manufactured, and through calculation, firstly, the concrete pier 1 and the steel pipe column 3 of the forced centering device can be freely disassembled and can be recycled for subsequent projects, so that the cost for manufacturing the device in the subsequent projects is saved; secondly, compared with the traditional forced centering device, the device of the invention can save 9200 yuan device cost, and in addition, the height can be adjusted by freely lifting, so that the labor cost can be saved by about 18 ten thousand yuan; and compared with the conventional tripod erecting measurement method, the project can save 1-2 manpower cost, about 18-36 ten thousand yuan, and in addition, can save one set of instruments, about 10-46 ten thousand yuan.
Therefore, by checking, the forced centering device can save at least 189280 yuan per year for the project.
Compared with the traditional centering device, the forced centering device has the advantages of free lifting, recycling, simple processing and manufacturing (shaping and manufacturing), high construction and measurement precision, integrated operation, effective reduction of measuring personnel, remarkable improvement of measurement efficiency (about more than 2 times of the measurement efficiency of the traditional device) and the like, and has higher popularization and use values.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A forced centering device capable of freely lifting, recycling and performing integrated operation is characterized by comprising a concrete pier (1), a steel sleeve (2), a steel pipe column (3), an instrument erection platform (4) and centering screws (5); the lower part of the concrete pier (1) is buried underground, a circular lifting channel (6) is formed in the center of the concrete pier (1) along the axial direction of the concrete pier, the steel sleeve (2) is embedded from an opening at the top of the circular lifting channel (6), and the steel pipe column (3) is matched with the inner diameter of the steel sleeve (2), can extend into the steel sleeve (2) and the circular lifting channel (6), and can slide up and down; a plurality of threaded holes are formed in the top of the steel sleeve (2) in different directions of the circumferential surface of the steel sleeve, the threaded holes are located above the opening in the top of the circular lifting channel (6), and a nut (7) matched with the threaded holes is screwed in each threaded hole; the top end of the steel pipe column (3) is fixed with an instrument erection platform (4) with the outer diameter larger than the inner diameter of the steel sleeve (2), and a centering screw (5) for fixing a measuring instrument is arranged at the center of the top surface of the instrument erection platform (4).
2. Forced centering device with free lift, recycling and integrable functioning according to claim 1, characterized by the fact that the bottom end of the pier (1) is poured fixed on the bedding (8) located under the ground.
3. Forced centering device with free lifting, recycling and integrable functioning according to claim 1, characterized by the fact that on the centering screw (5) is mounted a screw protection cap (9).
4. The centering device as claimed in claim 1, wherein a plane formed by a plurality of said threaded holes is parallel to a horizontal plane.
5. The forced centering device capable of freely ascending and descending, recycling and integrated operation according to claim 1 or 4, wherein the number of the threaded holes and the nuts (7) is four, and the four threaded holes are uniformly distributed on the circumferential surface of the top of the steel sleeve (2).
6. The forced centering device capable of free lifting, recycling and integrated operation according to claim 1, wherein the length of the circular lifting channel (6) is equal to or greater than the length of the steel pipe column (3).
7. Forced centering device with free lift, recycling and integrable operation according to claim 1, characterized by the fact that two thirds of the concrete piers (1) are buried under the ground.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010725431.XA CN111811491A (en) | 2020-07-24 | 2020-07-24 | Forced centering device capable of freely lifting, recycling and integrating operation |
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| CN202010725431.XA CN111811491A (en) | 2020-07-24 | 2020-07-24 | Forced centering device capable of freely lifting, recycling and integrating operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529682A (en) * | 2021-06-24 | 2021-10-22 | 中国五冶集团有限公司 | Soft soil layer measurement control point structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529682A (en) * | 2021-06-24 | 2021-10-22 | 中国五冶集团有限公司 | Soft soil layer measurement control point structure and construction method |
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