River width measuring device
By using a river width measurement device that combines a laser emitter and a target, the problem of determining the straight-line direction in river width measurement has been solved, achieving higher accuracy measurement results.
Patent Information
- Application Number
- CN202520211312.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-11
AI Technical Summary
In existing technologies, the measurement of river width is difficult to determine due to the difficulty in determining the straight-line direction between markers, resulting in large measurement errors. Furthermore, increasing the distance between markers to compensate for the angle increases the difficulty of positioning.
Two parallel laser emitters are placed side by side to emit parallel lasers. The theodolite is located directly above them. Two target positions are set on the target. The width of the river is measured by aligning the target with the laser beam. The positioning accuracy is improved by combining a fixed support and a rotating support.
It improves the angular positioning accuracy in the straight line direction between markers, reduces measurement errors, simplifies the operation process, and improves the accuracy of measurement results.
Smart Images
Figure CN223796021U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of river width measurement technology, and in particular to a river width measurement device. Background Technology
[0002] Measuring river width is a crucial part of river information collection. Especially when measuring large rivers, direct measurement methods are not feasible. Currently, the most common method is to use a theodolite and the offset method to complete the measurement.
[0003] In existing technologies, the measurement error in the offset method mainly arises from the difficulty in determining the straight-line direction between markers, leading to a discrepancy between the measured result and the actual distance. Currently, the main approach is to reduce the error by increasing the distance between markers to compensate for the angle with length. However, while reducing the error, this increases the difficulty of angle positioning. Utility Model Content
[0004] The purpose of this invention is to provide a river width measuring device that can accurately locate the angle between markers in the straight line direction, thereby improving measurement accuracy.
[0005] This utility model provides a river width measuring device, comprising:
[0006] The laser emitter has two laser emitters, which are placed side by side to emit two parallel laser beams.
[0007] A theodolite is located directly above one of the laser emitters, and the theodolite and the laser emitter constitute the operating end of the measuring device;
[0008] A target, wherein the target has two target positions, and the distance between the two target positions is the same as the distance between the two laser emitters;
[0009] The operating end and the target are placed on both sides of the river. After the two target positions of the target are simultaneously connected to the two laser beams, the theodolite measures the width of the river by offset method.
[0010] Preferably, the river width measuring device further includes a fixed support, which includes a vertical support rod and a horizontal mounting plate. The horizontal mounting plate is rotatably mounted on the vertical support rod, and the laser emitter and the theodolite are both fixedly mounted on the horizontal mounting plate.
[0011] Preferably, the two laser emitters are fixedly mounted at both ends of the horizontal mounting plate, and a connecting hole is provided at the center of the horizontal mounting plate. The horizontal mounting plate is rotatably mounted on the vertical support rod through the connecting hole.
[0012] Preferably, a balance block is fixedly installed on the horizontal mounting plate, the two laser emitters are fixedly connected to the horizontal mounting plate from bottom to top, and the theodolite and the balance block are fixedly connected to the horizontal mounting plate from top to bottom directly above the two laser emitters.
[0013] Preferably, a locking sleeve is also fitted on the vertical support rod. The vertical support rod is provided with a threaded section, a cylindrical section and a boss section from top to bottom. The horizontal mounting plate is rotatably fitted on the cylindrical section through the connecting hole, and the locking sleeve is threadedly fitted on the threaded section.
[0014] Preferably, the target further includes a rotating support, with two target positions rotatably mounted on the rotating support. The two target positions are a main target and a secondary target, respectively, and the rotation centers of the two target positions coincide with the center of the main target.
[0015] Preferably, the number of target positions is three, with the third target position being a secondary target, and the two secondary targets being symmetrically arranged on both sides of the main target.
[0016] Preferably, the main target is rotatably mounted on the rotating bracket, and the two secondary targets are fixedly connected to the main target from both sides by connecting rods.
[0017] Preferably, both the vertical support rod and the rotating bracket are fixedly supported on the ground by a tripod.
[0018] Preferably, the distance between the two laser emitters is 1 meter.
[0019] The technical solution of this utility model is to align the parallel beams emitted by two laser emitters with two target positions on the target. When the alignment is completed, the straight lines where the two laser emitters are located and the straight lines where the two target positions are located are parallel to each other. At this time, the theodolite is located directly above one of the laser emitters. The theodolite and the two target positions are distributed in a triangular vertex shape, which improves the positioning accuracy of the angle and makes the measurement results more accurate. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is an isometric view of the operating end of a river width measuring device according to this utility model;
[0022] Figure 2 for Figure 1A cross-sectional view of the fixed support in the river width measuring device;
[0023] Figure 3 for Figure 1 Assembly drawing of the operating end of the medium-sized river channel width measuring device;
[0024] Figure 4 This is an assembly drawing of the target in a river width measuring device of this utility model;
[0025] Figure 5 for Figure 4 A cross-sectional view of the rotating support in the river width measuring device.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Laser emitter; 2. Theodolite; 3. Target; 31. Rotating bracket; 4. Fixed bracket; 41. Vertical support rod; 42. Horizontal mounting plate; 43. Counterweight; 44. Locking sleeve. Detailed Implementation
[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] Combination Figures 1 to 5 As shown, the river width measuring device provided by this utility model includes a laser emitter 1, a theodolite 2, and a target 3.
[0032] Combination Figures 1 to 5 As shown, there are two laser emitters 1, which are placed side by side and emit two parallel laser beams. The theodolite 2 is located directly above one of the laser emitters 1, and the theodolite 2 and the laser emitter 1 constitute the operating end of the measuring device. The target 3 has two target positions, and the distance between the two target positions is the same as the distance between the two laser emitters 1. The operating end and the target 3 are placed on both sides of the river channel. After the two target positions of the target 3 are simultaneously aligned with the two laser beams, the theodolite 2 measures the width of the river channel by offset method.
[0033] In this embodiment, the parallel beams emitted by the two laser emitters 1 are aligned with the two target positions on the target 3. When the alignment is completed, the straight line where the two laser emitters 1 are located and the straight line where the two target positions are located are parallel to each other. At this time, the theodolite 2 is located directly above one of the laser emitters 1. The theodolite 2 and the two target positions are distributed in a triangular vertex shape, which improves the positioning accuracy of the angle and makes the measurement results more accurate.
[0034] In some embodiments, combined with Figure 1 , Figure 2 As shown, the river width measuring device also includes a fixed bracket 4, which includes a vertical support rod 41 and a horizontal mounting plate 42. The horizontal mounting plate 42 is rotatably mounted on the vertical support rod 41. The laser emitter 1 and the theodolite 2 are both fixedly mounted on the horizontal mounting plate 42. The rotatable mounting method increases the flexibility of the laser emission direction of the laser emitter 1 and improves the adjustment capability, thus avoiding frequent movement of the fixed bracket 4 during actual use.
[0035] In some embodiments, combined with Figure 1 , Figure 2 As shown, the two laser emitters 1 are respectively fixedly mounted at both ends of the horizontal mounting plate 42. A connecting hole is provided at the center of the horizontal mounting plate 42. The horizontal mounting plate 42 is rotatably mounted on the vertical support rod 41 through the connecting hole. The overall balance is higher during rotation, which can effectively avoid the fixed bracket 4 from shifting during the rotation adjustment process and ensure the accuracy of the measurement results.
[0036] In some embodiments, combined with Figure 3 As shown, a balance block 43 is fixedly installed on the horizontal mounting plate 42. The two laser emitters 1 are fixedly connected to the horizontal mounting plate 42 from bottom to top. The theodolite 2 and the balance block 43 are fixedly connected to the horizontal mounting plate 42 from top to bottom directly above the two laser emitters 1. The balance block 43 can replace the weight of the theodolite 2, further improving the overall weight balance.
[0037] In some embodiments, combined with Figure 2 As shown, a locking sleeve 44 is also mounted on the vertical support rod 41. The vertical support rod 41 has a threaded section, a cylindrical section and a boss section arranged sequentially from top to bottom. The horizontal mounting plate 42 is rotatably mounted on the cylindrical section through the connecting hole. The locking sleeve 44 is threadedly mounted on the threaded section. By adjusting the position of the locking sleeve 44, the positional relationship between the vertical support rod 41 and the horizontal mounting plate 42 can be locked, avoiding damage to the docking relationship between the laser emitter 1 and the target 3 during the use of the theodolite 2, thus improving the user experience.
[0038] In some embodiments, combined with Figure 4 , Figure 5 As shown, the target 3 also includes a rotating bracket 31, on which two target positions are rotatably mounted. The two target positions are the main target and the sub-target, respectively, and the rotation center of the two target positions coincides with the center of the main target. After the main target docking is completed, the sub-target and the laser can be docked quickly by rotation, reducing the difficulty of docking two laser beams at the same time.
[0039] In some embodiments, combined with Figure 4 As shown, there are three target positions, with the third target position being a secondary target. The two secondary targets are symmetrically arranged on both sides of the main target. The symmetrical shape can improve the balance during rotation and enhance the operating experience during rotation adjustment.
[0040] In some embodiments, combined with Figure 4 , Figure 5 As shown, the main target is rotatably mounted on the rotating bracket 31, and two secondary targets are fixedly connected to the main target from both sides by connecting rods. Since the connecting rods are less conspicuous than the target position...
[0041] In some embodiments, combined with Figure 3 , Figure 4 As shown, the vertical support rod 41 and the rotating bracket 31 are both fixedly supported on the ground by the tripod 5. The tripod 5 provides stable support and can better adapt to the relatively complex environment along the river.
[0042] In some embodiments, combined with Figure 1 As shown, the distance between the two laser emitters 1 is 1 meter. The integer length is more convenient for conversion, and the length of 1 meter will not be too long to affect the portability of use.
[0043] Working process: After the operating end and target 3 are placed on both sides of the river channel, the operator adjusts the direction of the laser emitter 1 on the operating end. First, the laser emitted by the laser emitter 1, which is located directly below the theodolite 2, is aligned with the main target on the target 3. During this process, the theodolite 2 can be used to calculate the required angle and make small adjustments to the position of the target 3 to increase the alignment efficiency. Then, by rotating the target, the secondary target can quickly align with the laser emitter 1. After alignment, the straight line direction of the theodolite 2 and the main target is perpendicular to the straight line direction of the main target and the secondary target. At this time, the theodolite 2 can calculate the width of the river channel by measuring the angle difference between the main target and the secondary target using the offset method.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A river width measuring device, characterized in that, include: The laser emitter (1) has two laser emitters (1) placed side by side to emit two parallel laser beams; The theodolite (2) is located directly above a laser emitter (1), and the theodolite (2) and the laser emitter (1) constitute the operating end of the measuring device; The target (3) has two target positions, and the distance between the two target positions is the same as the distance between the two laser emitters (1); The operating end and the target (3) are placed on both sides of the river. After the two target positions of the target (3) are simultaneously connected to the two laser beams, the theodolite (2) measures the width of the river by offset method.
2. The river width measuring device according to claim 1, characterized in that, It also includes a fixed bracket (4), which includes a vertical support rod (41) and a horizontal mounting plate (42). The horizontal mounting plate (42) is rotatably mounted on the vertical support rod (41), and the laser emitter (1) and the theodolite (2) are both fixedly mounted on the horizontal mounting plate (42).
3. The river width measuring device according to claim 2, characterized in that, The two laser emitters (1) are respectively fixedly mounted at both ends of the horizontal mounting plate (42). A connecting hole is provided at the center of the horizontal mounting plate (42). The horizontal mounting plate (42) is rotatably mounted on the vertical support rod (41) through the connecting hole.
4. The river width measuring device according to claim 3, characterized in that, A balance block (43) is fixedly installed on the horizontal mounting plate (42). The two laser emitters (1) are fixedly connected to the horizontal mounting plate (42) from bottom to top. The theodolite (2) and the balance block (43) are fixedly connected to the horizontal mounting plate (42) from top to bottom directly above the two laser emitters (1).
5. The river width measuring device according to claim 3, characterized in that, The vertical support rod (41) is also equipped with a locking sleeve (44). The vertical support rod (41) is provided with a threaded section, a cylindrical section and a boss section from top to bottom. The horizontal mounting plate (42) is rotatably mounted on the cylindrical section through the connecting hole. The locking sleeve (44) is threadedly connected to the threaded section.
6. The river width measuring device according to claim 2, characterized in that, The target (3) also includes a rotating bracket (31), with two target positions rotatably mounted on the rotating bracket (31). The two target positions are the main target and the secondary target, respectively, and the rotation center of the two target positions coincides with the center of the main target.
7. The river width measuring device according to claim 6, characterized in that, The number of target positions is three, with the third target position being a secondary target. The two secondary targets are symmetrically arranged on both sides of the main target.
8. The river width measuring device according to claim 7, characterized in that, The main target is rotatably mounted on the rotating bracket (31), and the two secondary targets are fixedly connected to the main target from both sides by connecting rods.
9. The river width measuring device according to claim 2 or 7, characterized in that, The vertical support rod (41) and the rotating bracket (31) are both fixedly supported on the ground by a tripod (5).
10. The river width measuring device according to claim 1, characterized in that, The distance between the two laser emitters (1) is 1 meter.