CN210664439U - Prism frame for elevation measurement - Google Patents
Prism frame for elevation measurement Download PDFInfo
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- CN210664439U CN210664439U CN201921470208.4U CN201921470208U CN210664439U CN 210664439 U CN210664439 U CN 210664439U CN 201921470208 U CN201921470208 U CN 201921470208U CN 210664439 U CN210664439 U CN 210664439U
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Abstract
The utility model discloses a prism frame for elevation measurement, include the frame, set gradually first bracing piece, second bracing piece, third bracing piece on the frame from bottom to top, equal fixedly connected with is used for elevation measurement's prism frame on first bracing piece, second bracing piece, the third bracing piece, be provided with the prism on the prism frame, the interval of prism equals and is located same vertical line, the total powerstation level pan center coincidence of the projection of prism center in vertical direction and frame below. After the device acquires the measurement data of the elevation, the error data can be quickly checked, the error data can be timely eliminated, and the measurement effectiveness is ensured.
Description
Technical Field
The utility model relates to an engineering construction measurement field, concretely relates to prism frame for elevation measurement.
Background
In mapping, the height difference between two points A, B is determined, when the gradient is not large (<5 degrees), geometric leveling is generally adopted; if the height difference is large (such as from the foot A to the top B), the triangulation height measurement is adopted,
in the triangulation, there is a large error in the measurement data due to the influence of the earth's curvature and atmospheric refraction, but the above error can be offset by the subtended view. For example, the vertical angle and the slope distance are observed from the point a to the point B, while the average is taken as the observation result from the point B to the point a. When the distance between the two points A, B is long, multiple stations are often needed, in order to increase the observation speed, two total stations are adopted for simultaneous observation, and one or two reflecting prisms are needed to be used as targets at the upper parts of the total stations.
The measurement engineering is that each measurement generates errors, including the error of measuring the height of an instrument (generally using a box ruler). For a single prism, the defect is that redundant checking conditions are not provided, and the testing station cannot test the alignment error on the spot. For the double prism group, although the detection is correct, no redundant data exists, and the wrong data cannot be eliminated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prism frame for elevation measurement solves the problem that can't inspect and reject the wrong data when measuring the elevation.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a prism frame for elevation measurement, includes the frame, sets gradually first bracing piece, second bracing piece, third bracing piece on the frame from bottom to top, equal fixedly connected with is used for the prism frame of elevation measurement on first bracing piece, second bracing piece, the third bracing piece, be provided with the prism on the prism frame, the interval of prism equals and is located same vertical line, the total powerstation level pan center coincidence of the projection of prism center in vertical direction and frame below.
Furthermore, the first support rod is located on the inner side of the bottom of the frame, the second support rod is located on the inner side of the top of the frame, and the third support rod is located on the outer side of the frame.
Further, the first supporting rod is located at the inner side of the bottom of the frame, the third supporting rod is located at the inner side of the top of the frame, and the second supporting rod is located at the inner side of the middle of the frame and located on two sides of the prism frame.
Further, a target for aiming is connected to the outer side of the prism frame.
Furthermore, the bottom of the frame is provided with an elastic connecting chuck, and the connecting chuck is matched with a handle at the top of the total station.
Furthermore, the height of the frame is 400-600 mm, and the width of the frame is 150-200 mm.
Furthermore, the rotating shafts connected with the prism frame and the prism extend towards the outer side of the prism frame, one end of each rotating shaft is connected with the prism, and the other end of each rotating shaft is connected to the turnover mechanism.
Furthermore, the turnover mechanism comprises a first rack fixedly arranged on the frame and a second rack movably arranged on the frame, a gear is fixedly connected to the end of the rotating shaft and positioned between the first rack and the second rack, and the gear is meshed with both the first rack and the second rack.
Furthermore, a spring is fixed above the second rack, a traction wire is connected below the second rack, and the traction wire is connected with a rotary roller fixedly arranged on the frame.
Furthermore, a rotating cylinder is fixedly arranged on the outer side of the gear.
The utility model has the advantages that:
the utility model discloses a set up first bracing piece, second bracing piece, third bracing piece support three prisms on same vertical line, guaranteed to acquire three groups of data fast in elevation measurement, the interval of three prisms is equal simultaneously, guaranteed that the difference of three groups of numerical values of acquireing is equal and unanimous with the interval between the prism, created the condition for quick inspection wrong numerical value; the center of the prism coincides with the center of the horizontal disc of the whole station instrument below the frame, so that the center of gravity is kept to be located at the central position, the frame cannot shake during measurement, and the accuracy of measured data is ensured. Therefore, after the device acquires the elevation measurement data, the error data can be quickly checked, the error data can be timely eliminated, and the measurement effectiveness is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural view of a prism frame according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third embodiment of the present invention;
fig. 4 is a schematic structural view of the turnover mechanism of the present invention;
in the figure, 1-second support bar, 2-first support bar, 3-frame, 4-third support bar, 5-prism frame, 6-prism, 7-connecting clamping head, 8-rotating shaft, 9-turnover mechanism, 10-second rack, 11-first rack, 12-gear and 13-rotating roller.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-2, the utility model provides a technical scheme:
the utility model provides a prism frame for elevation measurement, includes frame 3, sets gradually first bracing piece 2, second bracing piece 1, third bracing piece 4 on frame 3 from bottom to top, equal fixedly connected with is used for elevation measurement's prism frame 5 on first bracing piece 2, second bracing piece 1, the third bracing piece 4, be provided with prism 6 on prism frame 5, prism 6's interval equals and is located same vertical line, the total powerstation level pan center coincidence of the projection of prism 6 center in vertical direction and frame 3 below.
During elevation measurement, various factors influence the measurement result, including expansion with heat and contraction with cold of the measuring instrument, the fact that the angle of the prism and the observation lens of the instrument cannot be completely in a straight line, and the like. In addition, there are also human factors in the measurement process that cause large deviations in the measured values, such as the height of the prism 6 where the viewing lens reads incorrectly. To eliminate the error of the measured data, the most important method is to take an average value of multiple measurements. For a single prism, the position needs to be moved for multiple times for multiple measurement to measure at least three groups of data, for a double prism, the position needs to be moved for at least four times for position measurement, the change of the position easily causes errors, the accuracy of measuring data at each time cannot be ensured, and the interference on rejecting wrong data is caused.
The utility model discloses a mode of prism, two total powerstations tops all are fixed with the prism frame of taking the prism, and the prism 6 of installation is A1, A2, A3 by supreme A1, A2 in proper order on the hypothesis A instrument, and installation volume prism 6 is B1, B2, B3 by supreme B in proper order on the B instrument.
First set of measured data: the average value of the data of the B1 prism observed by the instrument A and the data of the A1 prism observed by the instrument B is taken to obtain measurement data a; second set of measured data: averaging the data of the prism B2 observed by the instrument A and the data of the prism A2 observed by the instrument B to obtain measurement data B; third set of measured data: the data of the A3 prism observed by the B3 prism observed by the A instrument and the data of the B3 prism observed by the B instrument are averaged to obtain measured data c. The difference between c and b and the difference between b and a are constant, namely the distance between two adjacent prisms. If the observation has errors, the distance is not correct, and the observation quality can be judged; because there are two groups of data, can get rid of certain data and reject and fall, other data still can adopt, do not influence observation quality and efficiency.
Meanwhile, the error data can be eliminated according to the structural constant of the prism frame. Since the three prisms 6 are installed with the same distance therebetween, the difference between the three height differences B1, B2, B3 observed from the a instrument and the B instrument should be the same as the difference between the distances between the three prisms 6 during actual measurement, and the checking can be performed.
The prism frame that this embodiment adopted, three data of disposable record, whole read data process is rapid, and interference factor is few, and data are more accurate, need not repeated measurement with the inspection and reject the wrong data, and the wrong data of inspection that can be quick is in time rejected the wrong data, has ensured measuring validity.
As a specific structure of the supporting rods, the first supporting rod 2 is located at the inner side of the bottom of the frame 3, the second supporting rod 1 is located at the inner side of the top of the frame 3, and the third supporting rod 4 is located at the outer side of the frame 3. The three support rods are located on the same vertical line, the prism 6 is ensured to be located on the same vertical line, the structure is simple, the structure of one prism can be directly added on the basis of the double-prism structure, and the production cost can be reduced.
In order to ensure the efficiency of the elevation measurement, a target for aiming is connected to the outside of the prism frame 5. The target can improve the visual aiming precision, quickly aim at the central position of the prism 6 and ensure the efficiency of data measurement on the premise of ensuring the data accuracy.
As specific dimensions of the frame 3, the height of the frame 3 is 400 to 600mm, and the width thereof is 150 to 200 mm. The limitation of height and width prevents the unstable gravity center caused by the overlarge frame 3 and the inconvenient installation of the prism 6 caused by the undersize.
Example two:
as another structure of the support rods, in the first embodiment, the first support rod 2 is located inside the bottom of the frame 3, the third support rod 4 is located inside the top of the frame 3, and the second support rod 1 is located inside the middle of the frame 3 and on both sides of the prism frame 5. The positions of the first supporting rod 2 and the third supporting rod 4 are unchanged, and the second supporting rod 1 is fixed at two ends, so that the stability is higher compared with a vertical connection mode.
Example three:
in order to facilitate the installation and the movement of the prism frame, in the first embodiment, the bottom of the frame 3 is provided with an elastic connecting clamp 7, and the connecting clamp 7 is matched with a handle at the top of the total station. The elastic connecting clamp 7 is directly clamped at the top of the total station, and the connecting clamp 7 is matched with the handle, so that the frame 3 can be ensured to keep the same plane with the total station after being connected with the total station. Therefore, the mode of punching at the top of the total station is avoided, the total station is convenient to install and can be detached when not in use, the size of the instrument is reduced, and the total station is convenient to transport and move.
Example four:
in order to facilitate the prisms 6 to determine a uniform rotation angle, as shown in fig. 3, in the first embodiment, the rotation shafts 8 connected to the prism frame 5 and the prisms 6 extend to the outside of the prism frame 5, and one end of each rotation shaft 8 is connected to a prism and the other end is connected to the turnover mechanism 9. The turnover mechanism 9 drives the rotating shaft 8 to rotate, or the single rotating shaft 8 can cause other rotating shafts 8 to rotate when rotating, so that the rotating angles of the three prisms are the same at each time, and the problem of inaccurate data caused by overlarge angular deviation of the prisms is avoided.
As a specific structure of the turnover mechanism 9, as shown in fig. 4, the turnover mechanism 9 includes a first rack 11 fixedly disposed on the frame 3 and a second rack 10 movably disposed on the frame, a gear 12 is fixedly connected to an end of the rotating shaft 8, the gear 12 is located between the first rack 11 and the second rack 10, and the gear 12 is engaged with both the first rack 11 and the second rack 10.
The gear 12 is driven to rotate by the movement of the second rack 10, or the rotation of the gear 12 drives the movement of the second rack 10, thereby ensuring the synchronous movement of the three rotating shafts 8.
As a specific rotation mode, a spring is fixed above the second rack 10, and a traction wire is connected below the second rack and is connected with a rotary roller 13 fixedly arranged on the frame 3. The traction line is driven to move up and down through the rotary roller 13, so that the second rack 10 is driven to move up and down, the three rotating shafts 8 are driven to move synchronously, and the implementation mode is simple.
Specifically, a rotary cylinder is fixedly provided outside the gear 12. The single rotating shaft 8 is directly rotated, so that the other rotating shafts 8 are driven by the second rack 10 to rotate, the adjustment is more direct, and the adjustment angle is easier to determine.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. The utility model provides a prism frame for elevation measurement, its characterized in that includes frame (3), sets gradually first bracing piece (2), second bracing piece (1), third bracing piece (4) on frame (3) from bottom to top, equal fixedly connected with is used for elevation measurement's prism frame (5) on first bracing piece (2), second bracing piece (1), third bracing piece (4), be provided with prism (6) on prism frame (5), the interval of prism (6) equals and is located same vertical line, the total powerstation level pan center coincidence of prism (6) center in the projection of vertical direction and frame (3) below.
2. A prism frame for altimetry as claimed in claim 1, characterized in that the first support bar (2) is located inside the bottom of the frame (3), the second support bar (1) is located inside the top of the frame (3), and the third support bar (4) is located outside the frame (3).
3. A prism frame for altimetry as defined in claim 1, wherein the first support bar (2) is located inside the bottom of the frame (3), the third support bar (4) is located inside the top of the frame (3), and the second support bar (1) is located inside the middle of the frame (3) and on both sides of the prism frame (5).
4. A prism frame for elevation measurement according to claim 1, wherein a target for aiming is connected to the outside of the prism frame (5).
5. A prism frame for elevation measurement according to claim 1, wherein a resilient connection clip (7) is provided at the bottom of the frame (3), said connection clip (7) being adapted to mate with a handle at the top of the total station.
6. A prism frame for use in altimetry measurements according to claim 1, characterized in that the frame (3) has a height of 400-600 mm and a width of 150-200 mm.
7. A prism frame for use in altimetry as recited in claim 1, wherein the rotation shafts (8) of the prism frame (5) and the prisms (6) each extend outside the prism frame (5), one end of each rotation shaft (8) being connected to a prism (6) and the other end thereof being connected to the turnover mechanism (9).
8. The prism frame for height measurement according to claim 7, wherein the turnover mechanism (9) comprises a first rack (11) and a second rack (10) which are fixedly arranged on the frame (3), a gear (12) is fixedly connected to the end of the rotating shaft (8), the gear (12) is located between the first rack (11) and the second rack (10), and the gear (12) is engaged with both the first rack (11) and the second rack (10).
9. A prism frame for elevation measurement according to claim 8, wherein the second rack (10) has springs fixed above it and traction wires connected below it, said traction wires being connected to rotating rollers (13) fixedly arranged on the frame (3).
10. The prism frame for elevation measurement according to claim 8, wherein a rotary cylinder is fixedly arranged outside the gear (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470208.4U CN210664439U (en) | 2019-09-04 | 2019-09-04 | Prism frame for elevation measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470208.4U CN210664439U (en) | 2019-09-04 | 2019-09-04 | Prism frame for elevation measurement |
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| Publication Number | Publication Date |
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| CN210664439U true CN210664439U (en) | 2020-06-02 |
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| CN201921470208.4U Active CN210664439U (en) | 2019-09-04 | 2019-09-04 | Prism frame for elevation measurement |
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Cited By (1)
| 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 |
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Cited By (2)
| 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 |
| CN110542404B (en) * | 2019-09-04 | 2024-06-25 | 北京城建集团有限责任公司 | Prism frame for elevation measurement |
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