Hydraulic engineering surveying and mapping scale

Abstract

The utility model discloses a water conservancy project surveying and mapping ruler, which comprises a hollow ruler and two movable rulers, a movable groove is arranged on the inner wall of the hollow ruler, the two movable rulers are connected in the movable groove in a sliding manner, the top of each movable ruler is connected with a magnetic block, two threaded holes are also arranged on the hollow ruler in a mirror image manner, and the two threaded holes are connected with the magnetic block in a sliding manner. A fixing screw rod is in threaded connection with the interior of each threaded hole, a floating plate is inserted into the hollow ruler, a mounting hole is formed in the circle center of the floating plate, and a clamping assembly used for fixing the floating plate is connected to the floating plate. The utility model solves the problems that when a surveying and mapping worker uses a portable surveying and mapping scale to read, if the sight line is not vertical to the scale surface of the scale, parallax can be generated by squint, reading errors are generated, and the accuracy of surveying and mapping results is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy engineering technical field especially relates to a water conservancy engineering surveying and mapping scale. BACKGROUND

[0002] Water conservancy engineering surveying and mapping scale is used for the tool of surveying and mapping water level, height difference etc. Data in water conservancy engineering surveying and mapping work. Surveying and mapping scale is mainly composed of the body and the scale, and the scale is usually marked on the body with centimeter or millimeter as the unit, is used for reading measurement data. For small river measurement, generally use portable surveying and mapping scale.

[0003] When the surveying and mapping personnel use portable surveying and mapping scale reading, if the line of sight is not perpendicular to the scale graduation face, but is oblique, will produce parallax, make reading produce error, influence the accuracy of surveying and mapping result. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the present defect and provides a water conservancy engineering surveying and mapping scale, can avoid reading error due to the visual angle factor, guarantees the accuracy of surveying and mapping result.

[0005] The technical scheme for realizing the above-mentioned purpose is: a water conservancy engineering surveying and mapping scale, including hollow ruler and two movable rulers, the hollow ruler inner wall is equipped with movable slot, two movable rulers are slidably connected in the movable slot, the top of each movable ruler is connected with magnetic block, the hollow ruler is also equipped with two screw holes in mirror image, each movable ruler is equipped with corresponding limit hole respectively, each screw hole is screw connected with one fixed screw rod, each fixed screw rod is inserted into corresponding limit hole through the screw hole, the hollow ruler is inserted with floating plate, the center of the floating plate is equipped with mounting hole, the floating plate is connected with clamping assembly for fixing the floating plate.

[0006] Preferably, the clamping assembly includes a first protective cover, a second protective cover, a drive motor, a transmission shaft, a rotating shaft, two support frames and a clamping plate, the upper surface of the floating plate is provided with the first protective cover, the inner bottom surface of the first protective cover is provided with a motor support, the motor support is connected with the drive motor, one end of the transmission shaft is connected with the output shaft of the drive motor, the other end of the transmission shaft is connected with the rotating shaft, the two ends of the rotating shaft are rotatably connected with corresponding support frames, the two support frames are connected to the upper surface of the floating plate, the rotating shaft is mirror image equipped with two external threads with opposite rotation directions, the rotating shaft is mirror image screw connected with two clamping plates, each clamping plate is located on the external thread with different rotation directions, the upper surface of the floating plate is connected with the second protective cover, the sidewall of the second protective cover is equipped with a sliding groove, the sliding groove is slidably connected with two clamping plates.

[0007] Preferably, the transmission shaft passes through the second protective cover, and the rotating shaft, the two support frames and the clamping plates are located inside the second protective cover.

[0008] Preferably, the mounting hole has a diameter slightly larger than the shaft diameter of the hollow ruler, and the outer wall of the magnetic block is in contact with the inner wall of the movable groove.

[0009] Preferably, the opposite surfaces of the two clamping plates are respectively connected with corresponding anti-skid cushions, and the junctions of the rotating shafts and the support frames are respectively provided with corresponding waterproof bearings.

[0010] Preferably, the lengths of the two movable rulers are greater than the length of the hollow ruler.

[0011] Preferably, the floating plate is further provided with a counterweight.

[0012] The beneficial effects of the present application are as follows: the floating plate is sleeved on the hollow ruler, the device is inserted into water for measurement, at this time, the floating plate is affected by the water surface buoyancy and moves to a certain position on the hollow ruler or the movable ruler, after the water surface is stable, the driving motor is started, at this time, the driving motor drives the transmission shaft and the rotating shaft to rotate together, according to the principle of screw transmission, thereby driving the two clamping plates to move relatively, clamping the hollow ruler or the movable ruler, then the device is taken out of the water, the scale on the bottom surface of the floating plate is the actual water surface scale, in this way, the reading error caused by the visual angle factor can be avoided, and the accuracy of the surveying result is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the present application;

[0014] Figure 2 is a top view of the present application;

[0015] Figure 3 is an exploded view of the present application;

[0016] Figure 4 is Figure 1 is a partial enlarged view of the A part;

[0017] Figure 5 is an internal schematic view of the movable ruler and the clamping assembly of the present application;

[0018] Figure 6 is Figure 5 is a partial enlarged view of the B part.

[0019] In the figure: 1, hollow ruler; 2, movable ruler; 3, movable groove; 4, magnetic block; 5, floating plate; 6, first protective cover; 7, second protective cover; 8, driving motor; 9, transmission shaft; 10, rotating shaft; 11, support frame; 12, clamping plate; 13, sliding groove; 14, magnetic block; 15, anti-skid soft pad; 16, waterproof bearing; 20, threaded hole; 21, limiting hole; 22, fixed screw rod. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings. In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.

[0021] The utility model will be further described below in conjunction with the drawings.

[0022] As Figures 1-6 shown, a water conservancy project surveying and mapping ruler, including hollow ruler 1, two movable rulers 2, two magnetic blocks 4, floating plate 5 (floating plate 5 is made of transparent plastic material), two fixed screw rods 22 and clamping assembly.

[0023] Specifically, the inner wall of the hollow ruler 1 is provided with a movable groove 3, and two movable rulers 2 are slidably connected in the movable groove 3. The telescopic structure can ensure the portability of the device. The sum of the lengths of the two movable rulers 2 is greater than the length of the hollow ruler 1. Each movable ruler 2 is provided with a magnetic block 4 at the top. The hollow ruler 1 is also provided with two mirror image threaded holes 20. Each movable ruler 2 is provided with a corresponding limiting hole 21. Each threaded hole 20 is threadedly connected with a fixed screw rod 22. Each fixed screw rod 22 passes through the threaded hole 20 and is inserted into the corresponding limiting hole 21. The two movable rulers 2 are fixed by the two fixed screw rods 22, which ensures the stability of the structure during surveying and mapping. The hollow ruler 1 is inserted with a floating plate 5. The center of the floating plate 5 is provided with a mounting hole. The floating plate 5 is connected with a clamping assembly for fixing the floating plate 5.

[0024] Specific, clamping assembly includes first protective cover 6, second protective cover 7, drive motor 8 (drive motor 8 is the existing waterproof motor), transmission shaft 9, rotating shaft 10, two support frames 11 and clamping plate 12, the upper surface of the floating plate 5 is provided with the first protective cover 6, the inner bottom surface of the first protective cover 6 is provided with the motor support, the motor support is connected with the drive motor 8, one end of the output shaft of the drive motor 8 is connected with the transmission shaft 9, the other end of the transmission shaft 9 is connected with the rotating shaft 10, the two ends of the rotating shaft 10 are rotatably connected with the corresponding support frames 11, the two support frames 11 are connected on the upper surface of the floating plate 5, two external threads with opposite rotation directions are mirror image provided on the rotating shaft 10, the rotating shaft 10 is mirror image screw connected with the two clamping plates 12, each clamping plate 12 is located on the external thread with different rotation directions, the upper surface of the floating plate 5 is connected with the second protective cover 7, the sidewall of the second protective cover 7 is provided with the sliding groove 13, the two clamping plates 12 are slidably connected in the sliding groove 13, according to the principle of screw transmission, the drive motor 8 drives the transmission shaft 9 and the rotating shaft 10 to rotate together, since the two clamping plates 12 are located on the external threads with different rotation directions, and the two clamping plates 12 are limited by the sliding groove 13, at this time, the two clamping plates 12 will make linear motion in the direction of the central axis of the rotating shaft 10 or away from each other, so as to tighten or loosen; the transmission shaft 9 passes through the second protective cover 7, the rotating shaft 10, the two support frames 11 and the clamping plates 12 are located inside the second protective cover 7.

[0025] Specific, the hole diameter of the mounting hole is slightly larger than the shaft diameter of the hollow ruler 1, the floating plate 5 can freely move on the hollow ruler 1 and the movable ruler 2 without being affected by the clamping assembly, the outer wall of the magnetic block 4 is in contact with the inner wall of the movable groove 3; the opposite surfaces of the two clamping plates 12 are respectively connected with the corresponding anti-skid cushions 15, the anti-skid cushions 15 can increase the friction between the two clamping plates 12 and the hollow ruler 1 or the movable ruler 2, and ensure the stability of the clamping of the two clamping plates 12; the intersections of each support frame 11 and the rotating shaft 10 are respectively provided with the corresponding waterproof bearings 16, the friction between the rotating shaft 10 and the two support frames 11 can be reduced through the waterproof bearings 16, and the rotating of the rotating shaft 10 is facilitated; the counterweight 14 is also installed on the floating plate 5, the counterweight 14 can balance the weight of the clamping assembly, and save the stability of the floating plate 5.

[0026] Working principle: when the device needs to be used to measure the riverbed depth, first, the two movable rulers 2 are pulled out from the hollow ruler 1, and the two fixed screws 22 pass through the corresponding threaded holes 20 and the limiting holes 21, and the assembly before measurement is completed;

[0027] Then the float plate 5 is sleeved on the hollow ruler 1, the device is inserted into water to measure, at this time the float plate 5 is affected by the water surface buoyancy, the float plate 5 will move to a position on the hollow ruler 1 or the movable ruler 2, after the water surface is stable, the height of the bottom surface of the float plate 5 is the height of the water surface at this time, then the driving motor 8 is started, at this time the driving motor 8 drives the transmission shaft 9 and the rotating shaft 10 to rotate together, so as to drive the two clamping plates 12 to move relatively along the central axis direction of the rotating shaft 10, and the hollow ruler 1 or the movable ruler 2 is clamped, then the device is taken out from the water, the scale of the bottom surface of the float plate 5 is the actual water surface scale, so that the reading error caused by the printing visual angle factor can be avoided, and the accuracy of the surveying and mapping result is ensured;

[0028] When the surveying and mapping is finished, the driving motor 8 is started to make the output shaft reverse, at this time the two clamping plates 12 move away along the central axis direction of the rotating shaft 10, and the hollow ruler 1 or the movable ruler 2 is loosened, then the driving motor 8 is turned off, the float plate 5 is taken out from the hollow ruler 1 or the movable ruler 2, then the two fixed screw rods 22 are taken out by using a hexagonal wrench, finally the two movable rulers 2 are pushed into the hollow ruler 1 until the magnetic blocks 4 of the two movable rulers 2 are attracted to each other and tightly adhere, so that the device can be conveniently carried, and the two movable rulers 2 will not be stretched out from the hollow ruler 1 in the normal state.

[0029] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model is explained in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A surveying scale for water conservancy projects, characterized in that, The device includes a hollow ruler (1) and two movable rulers (2). The hollow ruler (1) has a movable groove (3) on its inner wall. The two movable rulers (2) are slidably connected in the movable groove (3). A magnetic block (4) is connected to the top of each movable ruler (2). The hollow ruler (1) also has two threaded holes (20) mirrored on it. Each movable ruler (2) has a corresponding limiting hole (21). A fixing screw (22) is threaded into each threaded hole (20). Each fixing screw (22) passes through the threaded hole (20) and is inserted into the corresponding limiting hole (21). A float plate (5) is inserted into the hollow ruler (1). An installation hole is opened at the center of the float plate (5). A clamping component for fixing the float plate (5) is connected to the float plate (5).

2. The water conservancy engineering surveying scale according to claim 1, characterized in that, The clamping assembly includes a first protective cover (6), a second protective cover (7), a drive motor (8), a transmission shaft (9), a rotating shaft (10), two support frames (11), and a clamping plate (12). The upper surface of the float plate (5) is provided with the first protective cover (6). A motor bracket is installed on the inner bottom surface of the first protective cover (6). The drive motor (8) is connected to the motor bracket. The output shaft of the drive motor (8) is connected to one end of the transmission shaft (9), and the other end of the transmission shaft (9) is connected to the rotating shaft (10). The two ends of the rotating shaft (10) are respectively The support frame (11) is rotatably connected to the upper surface of the float (5). Two external threads with opposite directions are mirrored on the rotating shaft (10). Two clamping plates (12) are mirrored on the rotating shaft (10). Each clamping plate (12) is located on an external thread with a different direction of rotation. The upper surface of the float (5) is connected to the second protective cover (7). A sliding groove (13) is provided on the side wall of the second protective cover (7). Two clamping plates (12) are slidably connected in the sliding groove (13).

3. The water conservancy engineering surveying scale according to claim 2, characterized in that, The drive shaft (9) passes through the second protective cover (7), and the rotating shaft (10), the two support frames (11) and the clamping plate (12) are located inside the second protective cover (7).

4. The surveying scale for water conservancy projects according to claim 1, characterized in that, The diameter of the mounting hole is slightly larger than the shaft diameter of the hollow ruler (1), and the outer wall of the magnetic block (4) is in contact with the inner wall of the movable groove (3).

5. The surveying scale for water conservancy projects according to claim 2, characterized in that, The two clamping plates (12) are respectively connected to corresponding anti-slip pads (15), and each of the support frames (11) and the rotating shaft (10) is respectively provided with corresponding waterproof bearings (16).

6. The surveying scale for water conservancy projects according to claim 1, characterized in that, The sum of the lengths of the two movable rulers (2) is greater than the length of the hollow ruler (1).

7. The surveying scale for water conservancy projects according to claim 1, characterized in that, The float (5) is also equipped with a counterweight (14).

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