CN209432128U - Swivel bridges flexural pivot positioning device - Google Patents
Swivel bridges flexural pivot positioning device Download PDFInfo
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- CN209432128U CN209432128U CN201920151072.4U CN201920151072U CN209432128U CN 209432128 U CN209432128 U CN 209432128U CN 201920151072 U CN201920151072 U CN 201920151072U CN 209432128 U CN209432128 U CN 209432128U
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- prism
- flexural pivot
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- bar
- prism bar
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Abstract
The utility model discloses a kind of swivel bridges flexural pivot positioning devices, it is characterized by comprising flexural pivots and prism bar, the lower extreme point of the prism bar is located at the center of circle of flexural pivot, the first prism and the second prism are fixed on the prism bar, center, the center of the second prism and the lower extreme point of prism bar of first prism are located in a straight line.When measurement, the position coordinates in the flexural pivot center of circle need to can be only calculated according to the position coordinates of two prism centers and the distance of flexural pivot distance of center circle prism centers, then flexural pivot is translated using thrustor, flexural pivot is made to be adjusted to setting position.The device avoids when single prism setting out survey, error brought by the verticality of prism centering leveling and prism bar improves the positioning accuracy of flexural pivot.
Description
Technical field
The utility model relates to bridge survey technical fields, in particular to a kind of swivel bridges flexural pivot positioning device.
Background technique
For swivel bridges measurement and positioning, traditional construction survey method is, after lower cushion cap construction, near flexural pivot
Total station is set, prism is set up by tripod on flexural pivot, the level design position in the flexural pivot center of circle is determined using prism setting-out,
And keep prism bar in vertical position, it then sets up pedestal and ball heave in row is translated, make the lower extreme point of the flexural pivot center of circle and prism bar
Alignment, makes the flexural pivot center of circle meet design position.But in measurement process, the artificial mirror bring error of centralization of taking charge of is high for ball strand
Precision positioning can have an adverse effect, and the verticality of scene adjustment prism bar also brings along measurement error, and uses general three
Foot prop, which is erected on flexural pivot, is easy to produce shaking, also can bring error to measurement.
Utility model content
The purpose of this utility model seeks to overcome above-mentioned the shortcomings of the prior art, and providing one kind can be improved flexural pivot circle
The swivel bridges flexural pivot positioning device of heart positioning accuracy.
To achieve the above object, the utility model provides a kind of swivel bridges flexural pivot positioning device, it is characterised in that: including ball
Hinge and prism bar, the lower extreme point of the prism bar are located at the center of circle of flexural pivot, and the first prism and the are fixed on the prism bar
Two prisms, center, the center of the second prism and the lower extreme point of prism bar of first prism are located in a straight line.
Further, it is threaded with clutch disk in the middle part of the prism bar, is hinged on the outside of the clutch disk multiple
Supporting leg, the lower end of the supporting leg and flexural pivot limit cooperate.
Further, the lower end of the supporting leg is hinged with magnetic patch, and the flexural pivot surface is equipped with matches with the limit of magnetic patch lower end surface
The supporting leg fixed groove of conjunction.
Further, the lower end of the prism bar is taper, and the center point of the flexural pivot is equipped with and prism bar lower end
The center of circle groove of abutting.
The beneficial effects of the utility model are: improving flexural pivot center of circle positioning accuracy.The utility model is fixed by prism bar
If there are two prisms, and prism bar lower extreme point is made to be located at flexural pivot the center point, it is located at the center of two prisms and the flexural pivot center of circle same
It, can be according to the position coordinates of two prism centers and the distance of flexural pivot distance of center circle prism centers when measurement on straight line
The position coordinates in the flexural pivot center of circle are found out, then flexural pivot is translated using thrustor, flexural pivot is made to be adjusted to setting position.The device is kept away
When having exempted from single prism setting out survey, error brought by the verticality of prism centering leveling and prism bar improves flexural pivot
Positioning accuracy.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Each part numbers are as follows in figure: flexural pivot 1, center of circle groove 101, supporting leg fixed groove 102, prism bar 2, the first prism
3, the second prism 4, clutch disk 5, supporting leg 6, magnetic patch 7.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing, convenient for more clearly understanding that this is practical new
Type, but they do not constitute the utility model and limit.
As shown in Figure 1, a kind of swivel bridges flexural pivot positioning device, including flexural pivot 1 and prism bar 2, the lower end of prism bar 2 are cone
Shape, the center point of flexural pivot 1 are equipped with the center of circle groove 101 abutted with 2 lower end of prism bar, are fixed with the first rib on prism bar 2
The lower extreme point of mirror 3 and the second prism 4, the center of the first prism 3, the center of the second prism 4 and prism bar 2 is located at straight line
On.In this way in measurement, it can be asked according to the position coordinates of two prism centers and the distance of flexural pivot distance of center circle prism centers
Then the position coordinates in the flexural pivot center of circle out translate flexural pivot using thrustor, flexural pivot are made to be adjusted to setting position.The device is not required to
Want prism with the line in the flexural pivot center of circle must be it is vertical, prism bar can be any angle placement, avoids single prism and puts
When sample measures, error brought by the verticality of prism centering leveling and prism bar improves the positioning accuracy of flexural pivot.
In above-mentioned technical proposal, it is threaded with clutch disk 5 in the middle part of prism bar 2, there are four 5 outside of clutch disk is hinged
Supporting leg 6, the lower end of supporting leg 6 are hinged with magnetic patch 7, and the lower surface of magnetic patch is semi arch, are equipped with and 7 lower end of magnetic patch on 1 surface of flexural pivot
The supporting leg fixed groove 102 of face limit cooperation.In this way, fixed by four supporting legs with magnetic patch and flexural pivot surface magnetic, so that
Prism bar and prism are fixed, avoid because prism fixes measurement error caused by shakiness.
Claims (4)
1. a kind of swivel bridges flexural pivot positioning device, it is characterised in that: including flexural pivot (1) and prism bar (2), the prism bar (2)
Lower extreme point be located at the center of circle of flexural pivot (1), be fixed with the first prism (3) and the second prism (4), institute on the prism bar (2)
The lower extreme point for stating the center of the first prism (3), the center of the second prism (4) and prism bar (2) is located in a straight line.
2. swivel bridges flexural pivot positioning device according to claim 1, it is characterised in that: screw thread in the middle part of the prism bar (2)
It is connected with clutch disk (5), is hinged with multiple supporting legs (6) on the outside of the clutch disk (5), the lower end of the supporting leg (6) and ball
Cut with scissors (1) limit cooperation.
3. swivel bridges flexural pivot positioning device according to claim 2, it is characterised in that: the lower end of the supporting leg (6) is hinged
Have magnetic patch (7), flexural pivot (1) surface is equipped with the supporting leg fixed groove (102) with the limit cooperation of magnetic patch (7) lower end surface.
4. swivel bridges flexural pivot positioning device according to claim 1, it is characterised in that: the lower end of the prism bar (2)
For taper, the center point of the flexural pivot (1) is equipped with the center of circle groove (101) abutted with prism bar (2) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920151072.4U CN209432128U (en) | 2019-01-28 | 2019-01-28 | Swivel bridges flexural pivot positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920151072.4U CN209432128U (en) | 2019-01-28 | 2019-01-28 | Swivel bridges flexural pivot positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209432128U true CN209432128U (en) | 2019-09-24 |
Family
ID=67977804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920151072.4U Active CN209432128U (en) | 2019-01-28 | 2019-01-28 | Swivel bridges flexural pivot positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209432128U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542404A (en) * | 2019-09-04 | 2019-12-06 | 北京城建集团有限责任公司 | Prism frame for elevation measurement |
| CN112033357A (en) * | 2020-09-08 | 2020-12-04 | 重庆交通大学 | Leveling-free polygon prism measuring device and method for triangulation elevation measurement |
| CN114396923A (en) * | 2022-01-12 | 2022-04-26 | 中铁大桥局集团第二工程有限公司 | Tool suitable for accurate positioning measurement of circular steel anchor rod and construction method thereof |
-
2019
- 2019-01-28 CN CN201920151072.4U patent/CN209432128U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542404A (en) * | 2019-09-04 | 2019-12-06 | 北京城建集团有限责任公司 | Prism frame for elevation measurement |
| CN112033357A (en) * | 2020-09-08 | 2020-12-04 | 重庆交通大学 | Leveling-free polygon prism measuring device and method for triangulation elevation measurement |
| CN114396923A (en) * | 2022-01-12 | 2022-04-26 | 中铁大桥局集团第二工程有限公司 | Tool suitable for accurate positioning measurement of circular steel anchor rod and construction method thereof |
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