CN204555969U - A kind of forced centering base leveller - Google Patents
A kind of forced centering base leveller Download PDFInfo
- Publication number
- CN204555969U CN204555969U CN201520241375.7U CN201520241375U CN204555969U CN 204555969 U CN204555969 U CN 204555969U CN 201520241375 U CN201520241375 U CN 201520241375U CN 204555969 U CN204555969 U CN 204555969U
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- ball
- forced centering
- bearer bar
- centering base
- base plate
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Abstract
The utility model discloses a kind of forced centering base leveller; comprise and be arranged on transparent rigid base plate on pedestal and rigidity ball; described transparent rigid base plate is provided with bearer bar; rigidity ball is arranged in the bearer bar on stiff baseplate; the utility model utilizes ball under gravity always to the principle that lower rolls; the rapidly and efficiently installation realizing forced centering base can be assisted, ensure the requirement that the degree of tilt of mounting base is less than 4 '.
Description
Technical field
The utility model relates to forced centering base leveller.
Background technology
Measure in the forced centering base installation process of observation pier, higher to the requirement for horizontality of forced centering base, general base level pitch angle should not be greater than 4 ', and conversion lofty perch and low spot difference should be less than 0.2mm; The common method being used for adjusting base level at present has: carry out leveling by surveyor's staff method, carry out leveling with connection tube method (hydrostatic levelling method), carry out leveling by transit survey method (or total powerstation), carry out leveling etc. with levelling process; More than conventional installation method also exists shortcoming or deficiency, and be summarized as follows: carry out pedestal installation by surveyor's staff method, levelness is bad to be controlled in 4 '; Carry out pedestal installation with connection tube method (hydrostatic levelling method), because liquid exists surface tension, cause installation horizontal accuracy low; Carry out pedestal installation with transit survey or levelling process, levelness can ensure, but there is the shortcomings such as leveling process wastes time and energy, complicated operation.
Utility model content
The utility model object is to overcome above-mentioned the deficiencies in the prior art, provide a kind of can the forced centering base leveller installed of high precision, fast supplementary base.
The technical solution of the utility model is: a kind of forced centering base leveller, and comprise and be arranged on transparent rigid base plate on pedestal and rigidity ball, described transparent rigid base plate is provided with bearer bar, and rigidity ball is arranged in the bearer bar on stiff baseplate.
Bearer bar mainly plays and prevents rigidity ball from dropping and anti-wind action.
Described transparent rigid base plate is glass plate, the observation to rigidity ball position when being convenient to adjusting base coupling bolt.
Described rigidity ball is stainless steel ball, and the diameter of described rigidity ball is 3-4cm.
The height of described bearer bar is greater than the diameter of rigidity ball.
Described bearer bar is folding bearer bar, and four limits of bearer bar are rotatably connected on stiff baseplate respectively by hinge, and fastened by buckle between four limits, the bearer bar of this spline structure is easy to carry.
The bottom on four described limits is the arc-shaped transition that caves inward and is provided with windproof boss.
The method that forced centering base leveller supplementary base is installed, comprises the following steps:
Step one, adjustment pedestal is to just flat;
Step 2, is positioned over Chuck top by forced centering base leveller;
Step 3, observes rigidity ball rotating direction, adjusts the coupling bolt of pedestal respective direction simultaneously, until no longer roll in the stiff baseplate center that ball rigidity ball rests on forced centering base leveller, complete the leveling of pedestal.
The beneficial effects of the utility model are: the utility model utilizes ball under gravity always to the principle that lower rolls, and can assist the rapidly and efficiently realization that forced centering base is installed, and ensures the requirement that the degree of tilt of mounting base is less than 4 '.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
As shown in Figure 1, a kind of forced centering base leveller, comprise and be arranged on transparent rigid base plate on pedestal and rigidity ball, described transparent rigid base plate is provided with bearer bar, rigidity ball is arranged in the bearer bar on stiff baseplate, described transparent rigid base plate is glass plate, described rigidity ball is stainless steel ball, the diameter of described rigidity ball is 3-4cm, the height of described bearer bar is greater than the diameter of rigidity ball, described bearer bar is folding bearer bar, four limits of bearer bar are rotatably connected on stiff baseplate respectively by hinge, fastened by buckle between four limits, the bottom on four described limits is the arc-shaped transition that caves inward and is provided with windproof boss.
The method that forced centering base leveller supplementary base is installed, comprises the following steps:
Step one, adjustment pedestal is to just flat;
Step 2, is positioned over Chuck top by forced centering base leveller;
Step 3, observes rigidity ball rotating direction, adjusts the coupling bolt of pedestal respective direction simultaneously, until no longer roll in the stiff baseplate center that ball rigidity ball rests on forced centering base leveller, complete the leveling of pedestal.
When ball is on horizonal base plate, be not subject under other External Force Actings, ball is only subject to the anchorage force of gravity and base plate, and two power equal and opposite in directions, direction are contrary, so ball can keep transfixion; When base plate slightly tilts, the gravity that ball is subject to is decomposed into the pressure of base plate and sliding force along inclined direction, and under the effect of sliding force, ball will along base plate to being located in rolling.
When ball rolls along inclined floor, air resistance and base plate resistance will be subject to; Base plate resistance causes due to ball or backplate surface out-of-flatness, and because this patent uses smooth ball and the smooth base plate of surfacing, base plate resistance will be very little, can or slightly disregard; According to air resistance formula: f=1/16*S*V
2* Cw, S are sectional area (unit m
2), V is speed (unit m/s), Cw is air resistance coefficient (ball is set to 0.5), and air resistance is main relevant with speed, and speed is larger, and resistance is larger; Assuming that ball rolling speed is 0.05m/s, ball diameter 4cm, weight 0.1kg, by calculating, when pitch angle is greater than 0.2 " time, the sliding force of ball is greater than the resistance of air to ball, and ball will roll along dip plane to lower.
Claims (6)
1. a forced centering base leveller, is characterized in that: comprise and be arranged on transparent rigid base plate on pedestal and rigidity ball, described transparent rigid base plate is provided with bearer bar, and rigidity ball is arranged in the bearer bar on stiff baseplate.
2. a kind of forced centering base leveller according to claim 1, is characterized in that: described transparent rigid base plate is glass plate.
3. a kind of forced centering base leveller according to claim 1, is characterized in that: described rigidity ball is stainless steel ball, the diameter of described rigidity ball is 3-4cm.
4. a kind of forced centering base leveller according to claim 1, is characterized in that: the height of described bearer bar is greater than the diameter of rigidity ball.
5. a kind of forced centering base leveller according to claim 1, is characterized in that: described bearer bar is folding bearer bar, four limits of bearer bar are rotatably connected on stiff baseplate respectively by hinge, are fastened between four limits by buckle.
6. a kind of forced centering base leveller according to claim 5, is characterized in that: the bottom on four described limits is the arc-shaped transition that caves inward and is provided with windproof boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520241375.7U CN204555969U (en) | 2015-04-21 | 2015-04-21 | A kind of forced centering base leveller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520241375.7U CN204555969U (en) | 2015-04-21 | 2015-04-21 | A kind of forced centering base leveller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204555969U true CN204555969U (en) | 2015-08-12 |
Family
ID=53831067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520241375.7U Active CN204555969U (en) | 2015-04-21 | 2015-04-21 | A kind of forced centering base leveller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204555969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031686A (en) * | 2022-06-06 | 2022-09-09 | 新疆卓越工程项目管理有限公司 | Intelligent automatic level gauge for building supervision site |
-
2015
- 2015-04-21 CN CN201520241375.7U patent/CN204555969U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031686A (en) * | 2022-06-06 | 2022-09-09 | 新疆卓越工程项目管理有限公司 | Intelligent automatic level gauge for building supervision site |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450000 Jinshui Road 109, Zhengzhou City, Henan Province Patentee after: Yellow River Survey Planning and Design Research Institute Co., Ltd. Address before: 450000 Jinshui Road 109, Zhengzhou City, Henan Province Patentee before: Yellow River Engineering Consulting Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |