CN210507295U - Hydraulic model installation pay-off - Google Patents
Hydraulic model installation pay-off Download PDFInfo
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- CN210507295U CN210507295U CN201921393819.3U CN201921393819U CN210507295U CN 210507295 U CN210507295 U CN 210507295U CN 201921393819 U CN201921393819 U CN 201921393819U CN 210507295 U CN210507295 U CN 210507295U
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- range finder
- laser range
- fixed support
- single prism
- hydraulic model
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Abstract
The utility model discloses a hydraulic model installation pay-off. Comprises a measuring end and a fixed point end; the measuring end comprises a fixed support I, a laser range finder capable of pitching rotation is arranged on the fixed support I, a metal slip sheet is fixedly arranged on the laser range finder and is always in contact with an arc-shaped resistance sheet, a contact point in contact can change on the arc-shaped resistance sheet along with the rotation of the laser range finder, and a level gauge I is further arranged on the fixed support I; the fixed point end comprises a fixed support II, a rotatable single prism is mounted at the top end of the fixed support II, the single prism is used for reflecting laser emitted by the laser range finder, and a level gauge II used for leveling the single prism is mounted on the single prism; the fixed support I comprises a rotating frame, and the rotating frame is connected with a supporting vertical rod. The utility model has the characteristics of easy operation, work load are little.
Description
Technical Field
The utility model relates to a hydraulic model test field, especially a hydraulic model installation pay-off.
Background
For some hydraulic engineering with special design requirements, a hydraulic model test must be carried out to verify the reasonability and reliability of the design. The hydraulic model test process comprises model making, model installation and test. The key of model installation is to control the elevation of the relevant control point, namely to pay off. At present, the conventional measurement means is adopted in the model installation and paying-off technology, a level gauge and a leveling rod are used for measuring and calculating the elevation of a control point, and the technology has the defects of complex operation, more participators and poor paying-off precision. And because the paying-off process is a repetitive work, the paying-off workload by adopting a conventional means is very huge, so that the efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic model installation pay-off. The utility model has the characteristics of easy operation, work load are little.
The technical scheme of the utility model: a hydraulic model mounting and paying-off device comprises a measuring end and a fixed point end; the measuring end comprises a fixed support I, a laser range finder capable of pitching rotation is arranged on the fixed support I, a metal slip sheet is fixedly arranged on the laser range finder and is always in contact with an arc-shaped resistance sheet, a contact point in contact can change on the arc-shaped resistance sheet along with the rotation of the laser range finder, and a level gauge I is further arranged on the fixed support I; the fixed point end comprises a fixed support II, a rotatable single prism is mounted at the top end of the fixed support II, the single prism is used for reflecting laser emitted by the laser range finder, and a level gauge II used for leveling the single prism is mounted on the single prism; the fixed support I comprises a rotating frame, and the rotating frame is connected with a supporting vertical rod.
In the hydraulic model installation and pay-off device, the laser range finder is further provided with a sighting device.
In the hydraulic model installation and pay-off device, the vertical supporting rod can extend and retract along the central axis of the vertical supporting rod.
Compared with the prior art, the utility model drives the metal slip sheet to rotate through the rotation of the laser range finder, thereby changing the contact point of the metal slip sheet and the arc-shaped resistance sheet, further changing the resistance value of the arc-shaped resistance sheet, and converting the rotating angle of the laser range finder into an angle signal through the resistance value; meanwhile, the distance data between the laser range finder and the single prism can be measured through the reflected laser between the laser range finder and the single prism; after the two data (angle signals and distance data) are obtained, the two data are transmitted to a conventional arithmetic device, and the elevation of the control point can be quickly calculated; the structure has the advantages that the height measurement and calculation operation is simple, the leveling instrument and the leveling rod are not required to be frequently used manually for measurement and calculation, the manual calculation amount is greatly reduced, and the workload is reduced; besides, the frequent manual use of a level gauge and a leveling rod for measurement is avoided, so that the human error in the measurement process is reduced, and the measurement accuracy is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of a structure of a fixed-point terminal;
FIG. 3 is a schematic diagram of the position and connection structure between the laser range finder, the arc-shaped resistance chip and the rotating frame;
fig. 4 is a schematic top view of the fixing bolt.
The labels in the figures are: the method comprises the following steps of 1-measuring end, 11-fixed support I, 111-rotating frame, 112-supporting vertical rod, 12-laser range finder, 13-metal sliding sheet, 14-arc resistance sheet, 15-level instrument I, 16-sighting device, 2-fixed point end, 21-fixed support II, 22-single prism, 23-level instrument II, 3-hydraulic model, 4-control point, 5-fixing bolt and 6-locking bolt.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Examples are given. A hydraulic model mounting and paying-off device is shown in figures 1-4 and comprises a measuring end 1 and a fixed point end 2; the measuring end 1 comprises a fixed support I11, a laser range finder 12 capable of rotating in a pitching mode is arranged on the fixed support I11, a metal sliding sheet 13 is fixedly arranged on the laser range finder 12, the metal sliding sheet 13 is always in contact with an arc-shaped resistance sheet 14, the contact point can change on the arc-shaped resistance sheet 14 along with the rotation of the laser range finder 12, and a level meter I15 is further arranged on the fixed support I11; the fixed point end 2 comprises a fixed support II 21, a rotatable single prism 22 is installed at the top end of the fixed support II 21, the single prism 22 is used for reflecting laser emitted by the laser range finder 12, and a level instrument II 23 used for leveling the single prism 22 is installed on the single prism 22; the fixed support I11 comprises a rotating frame 111, and the rotating frame 111 is connected with a support vertical rod 112.
The aforementioned laser rangefinder 12 also has a sight 16 mounted thereon.
The sight 16 described above may alternatively be an infrared laser sight.
The supporting vertical bar 112 can be extended and contracted along the central axis thereof.
The method comprises the following steps of:
a. fixing a fixing support I11 of a measuring end 1 at a preset position, and leveling the fixing support I11 through a level instrument I15; when the preset position is selected, the conditions of fixed position, constant elevation, good visual field and the like (determined according to the concrete conditions of a hydraulic model laboratory) are met;
b. measuring and calculating the height difference between the measuring end 1 and a hydraulic model paying-off reference point (control point 4), specifically as follows:
b1. selecting one point from the predetermined model paying-off control points as a reference point, wherein the reference point is generally the highest point of the bottom of the model groove;
b2. the fixing support II 21 (in a conical shape) of the fixing single prism 22 is tightly attached and points to a control point (see figure 2), and the level II 23 is leveled and fixed by using a fixing bolt 5; see fig. 2;
b3. after leveling, the fixing support II 21 is locked on the side wall of the hydraulic model 3, and the single prism 22 is ensured to be higher than the side wall of the hydraulic model 3; in particular, using a locking bolt 6, see fig. 2;
b4. adjusting the pitch angle theta of the laser range finder 12 and rotating the single prism 22 to enable the collimator 16 to position the single prism, and calculating the height difference between the preset position and the control point through the reflection distance L and the pitch angle theta of the laser range finder 12;
c. b, calculating the elevation difference between the preset position and the reference point according to the method of the step b, and marking the elevation difference as H0；
d. B, calculating the elevation difference H between the preset position and other control points again according to the method of the step bi，i=1,2,…,n；
e. Calculating the elevation difference △ h between the control point and the reference pointi，
f. Inquiring a 'model control point and reference point height difference table' (pre-programmed according to a hydraulic model design scheme) and corresponding to △ h of the control pointiCarrying out comparison;
g. if the comparison result is consistent, repeating the steps d-f, and measuring the next control point; and if the measured values are inconsistent, adjusting the installation height of the hydraulic model 3, and returning to the step c for re-measurement.
Above H0、Hi、△hiThe related operation can be realized by transmitting the pitch angle theta data information and the reflection distance L data information to corresponding conventional operation control devices and performing conventional operation. Through the calculation of the operation control device, the calculation amount in the measuring process can be reduced, so that the workload is reduced, and the complexity of operation is simplified; the corresponding connection structure is as follows:
when the pitch angle theta data information is collected, one end of the arc-shaped resistance card 14 is connected by a lead, and then the metal sliding sheet 13 is connected by another lead; then, the two wires are respectively connected to an operation control device, so that the resistance data information can be acquired; the corresponding pitch angle theta data information can be calculated through the resistance data information operation control device.
When the data information of the reflection distance L is collected, the signal output end of the laser range finder 12 is directly connected to the operation control device.
The above-mentioned pair of operation control devicesPitch angle θ, reflection distance L, H0、Hi、△hiThe specific circuit structure and software method involved in the correlation operation are conventional methods, and are not described herein again.
Claims (3)
1. The utility model provides a hydraulic model installation pay-off which characterized in that: comprises a measuring end (1) and a fixed point end (2); the measuring end (1) comprises a fixing support I (11), a laser range finder (12) capable of rotating in a pitching mode is arranged on the fixing support I (11), a metal slip sheet (13) is fixedly arranged on the laser range finder (12), the metal slip sheet (13) is in constant contact with an arc-shaped resistance sheet (14), a contact point in contact can change on the arc-shaped resistance sheet (14) along with the rotation of the laser range finder (12), and a level meter I (15) is further installed on the fixing support I (11); the fixed point end (2) comprises a fixed support II (21), a single prism (22) capable of rotating is installed at the top end of the fixed support II (21), the single prism (22) is used for reflecting laser emitted by the laser range finder (12), and a level gauge II (23) used for leveling the single prism (22) is installed on the single prism (22); the fixed support I (11) comprises a rotating frame (111), and the rotating frame (111) is connected with a supporting vertical rod (112).
2. The hydraulic model installation line payoff device of claim 1, wherein: and the laser range finder (12) is also provided with a sighting device (16).
3. The hydraulic model installation line payoff device of claim 1, wherein: the supporting vertical rod (112) can stretch and retract along the central axis thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921393819.3U CN210507295U (en) | 2019-08-26 | 2019-08-26 | Hydraulic model installation pay-off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921393819.3U CN210507295U (en) | 2019-08-26 | 2019-08-26 | Hydraulic model installation pay-off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210507295U true CN210507295U (en) | 2020-05-12 |
Family
ID=70543595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921393819.3U Active CN210507295U (en) | 2019-08-26 | 2019-08-26 | Hydraulic model installation pay-off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210507295U (en) |
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2019
- 2019-08-26 CN CN201921393819.3U patent/CN210507295U/en active Active
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