Gradient measuring device

Abstract

The utility model belongs to the technical field of road traffic, and discloses a gradient measuring device. The gradient measuring device comprises a device body, auxiliary measuring liquid, a first gear structure, a second gear structure and a gradient measuring portion, a first gear and a first indicating piece are fixedly connected and rotationally arranged on a first shell, a second gear and a second indicating piece are fixedly connected and rotationally arranged on a second shell, the second gear is meshed with the first gear, and the second gear is meshed with the second indicating piece. The first indicating piece can drive the first gear to rotate synchronously along with the first gear, and then the second gear and the second indicating piece fixedly connected with the second gear are driven to rotate. The liquid level of the measurement auxiliary liquid is always parallel to the horizontal plane under the action of gravity. When the bottom face of the first shell is attached to the slope to be measured, the first indicating piece is rotated to be flush with the liquid level of the measurement auxiliary liquid, the gradient of the slope to be measured can be obtained according to the numerical value measured by the gradient measuring part, gradient measuring operation is not limited by factors such as weather, and measuring accuracy and reliability are high.

Description

Technical Field

[0001] This utility model relates to the field of road traffic technology, and in particular to a slope measuring device. Background Technology

[0002] Slope is the ratio of the vertical height to the horizontal width of a slope, used to quantify the degree of inclination of the ground surface or man-made structure. In road traffic, slope measurement is a crucial step in ensuring that road design meets safety, functional, and engineering standards. However, for roads with relatively small slopes, existing slope measurement tools are insufficient to meet the high-precision measurement requirements.

[0003] The related technology proposes a slope measuring ruler, which includes a pendulum, a multi-stage meshing gear, and a plumb line. When the slope measuring ruler is placed on the slope, the pendulum will remain vertical under the action of gravity, causing the multi-stage gear connected to the pendulum to rotate. After the pendulum stops swinging, the reading on the scale indicated by the plumb line is the ground slope. The multi-stage gear structure can amplify the rotation angle and optimize the measurement reading effect on roads with small slopes.

[0004] In the aforementioned slope measuring ruler, the rotation of the gears relies on the gravity of the pendulum. However, when the pendulum swings to automatic verticality under the influence of gravity, it is easily affected by the friction between the pendulum and the main body of the device. Furthermore, the pendulum itself is easily affected by vibration or weather conditions such as strong winds, which can cause it to sway, resulting in deviations in the readings and affecting the accuracy of the actual measurement data. Utility Model Content

[0005] The purpose of this invention is to provide a slope measuring device that is not limited by weather or other factors during the measurement process, thereby improving the accuracy of the measurement data.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model proposes a slope measuring device, comprising:

[0008] The main body of the device includes a first shell and a second shell connected to each other, and the bottom surface of the first shell can be in contact with the slope to be measured;

[0009] A measuring auxiliary liquid is installed inside the first housing, with the liquid level of the measuring auxiliary liquid parallel to the horizontal plane;

[0010] The first gear structure is rotatably disposed on the outer wall of the first housing, including a first gear and a first indicator fixedly connected, the first indicator being able to rotate to be flush with the liquid surface of the measuring auxiliary liquid;

[0011] The second gear structure is rotatably mounted on the outer wall of the second housing, and includes a second gear and a second indicator that are fixedly connected. The second gear meshes with the first gear.

[0012] The slope measurement unit is used to measure the slope of the slope to be measured.

[0013] Optionally, the first indicator includes a first indicator part, a connecting part, and a second indicator part connected in sequence. The center line of the first indicator part is able to be level with one end of the measuring auxiliary liquid surface, and the center line of the second indicator part is able to be level with the other end of the measuring auxiliary liquid surface.

[0014] Optionally, the first indicator is arranged radially along the first gear, and the length of the first indicator is greater than the diameter of the first gear.

[0015] Optionally, the gear ratio between the second gear and the first gear ranges from 1:7 to 1:3.

[0016] Optionally, the slope measuring unit is an angle sensor disposed on the second gear or the second indicator.

[0017] Specifically, the angle measurement range of the slope measurement unit is 0° to 90°.

[0018] Optionally, the second indicator includes a third indicator and a fourth indicator arranged at an angle, the third indicator being fixedly connected to the second gear, and the fourth indicator being disposed above the second housing.

[0019] Optionally, the longitudinal section of the first shell is rectangular, and the longitudinal section of the second shell is semi-circular.

[0020] Optionally, the center of the liquid surface of the measuring auxiliary liquid coincides with the center of the first housing, and the rotation center of the first gear is at the same height as the center of the liquid surface of the measuring auxiliary liquid.

[0021] Optionally, the measuring auxiliary liquid is a colored liquid.

[0022] The beneficial effects of this utility model are:

[0023] This invention proposes a slope measuring device. A first gear and a first indicator are fixedly connected and rotatably mounted on a first housing. A second gear and a second indicator are fixedly connected and rotatably mounted on a second housing. The second gear meshes with the first gear. When the first indicator rotates, the first gear rotates synchronously, thereby driving the second gear meshing with the first gear and the second indicator fixedly connected to the second gear to rotate. The measuring auxiliary liquid maintains its parallel position to the horizontal plane under gravity. Therefore, when the bottom surface of the first housing is placed against the slope to be measured, the liquid level of the measuring auxiliary liquid will change accordingly. After the liquid level stabilizes, the first indicator is rotated to be flush with the liquid level. The slope of the slope to be measured can be determined from the value measured by the slope measuring unit. The slope measurement operation is simple and easy to implement. Since the measuring auxiliary liquid is located inside the first housing, the measurement process is not affected by external factors such as weather, resulting in high accuracy and reliability of the slope measurement data. Attached Figure Description

[0024] Figure 1 This is a front view of the slope measuring device described in this embodiment of the utility model;

[0025] Figure 2 This is a side view of the slope measuring device described in this embodiment of the utility model;

[0026] Figure 3 This is a top view of the slope measuring device described in this embodiment of the utility model.

[0027] In the picture:

[0028] 1. Main body of the device; 11. First housing; 12. Second housing;

[0029] 2. Measure the auxiliary liquid;

[0030] 3. First gear structure; 31. First gear; 32. First indicator; 321. First indicator part; 322. Connecting part; 323. Second indicator part; 33. First mounting shaft;

[0031] 4. Second gear structure; 41. Second gear; 42. Second indicator; 421. Third indicator; 422. Fourth indicator; 43. Second mounting shaft;

[0032] 5. Slope Measurement Department. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] like Figures 1-3 As shown, this utility model provides a slope measuring device, including a device body 1, a measuring auxiliary liquid 2, a first gear structure 3, a second gear structure 4, and a slope measuring part 5. The device body 1 includes a first housing 11 and a second housing 12 connected together. The bottom surface of the first housing 11 can be in contact with the slope to be measured. The measuring auxiliary liquid 2 is disposed inside the first housing 11, and its surface is parallel to the horizontal plane. The first gear structure 3 is rotatably disposed on the outer wall of the first housing 11, including a first gear 31 and a first indicator 32 fixedly connected. The first indicator 32 can rotate to be flush with the surface of the measuring auxiliary liquid 2. The second gear structure 4 is rotatably disposed on the outer wall of the second housing 12, including a second gear 41 and a second indicator 42 fixedly connected. The second gear 41 meshes with the first gear 31. The slope measuring part 5 is used to measure the slope of the slope to be measured.

[0038] The first gear 31 and the first indicator 32 are fixedly connected and rotatably mounted on the first housing 11. The second gear 41 and the second indicator 42 are fixedly connected and rotatably mounted on the second housing 12. The second gear 41 meshes with the first gear 31. When the first indicator 32 rotates, the first gear 31 rotates synchronously, thereby driving the second gear 41 meshing with the first gear 31 and the second indicator 42 fixedly connected to the second gear 41 to rotate. Initially, the first indicator 32 is flush with the measuring auxiliary liquid 2 along the axial direction, and both are parallel to the bottom surface of the first housing 11. When the bottom surface of the first housing 11 is placed against the slope to be measured, the liquid level of the measuring auxiliary liquid 2 will change accordingly under the action of gravity, and its liquid level will always remain parallel to the horizontal plane. After the liquid level stabilizes, the first indicator 32 is rotated to be flush with the changed liquid level of the measuring auxiliary liquid 2. At this time, the slope of the slope to be measured can be obtained from the value measured by the slope measuring unit 5. The slope measurement process is simple and easy to implement. The measuring auxiliary liquid 2 is located inside the first housing 11, so the measurement process is not affected by external factors such as weather, and the accuracy of the slope measurement data is high. The first indicator 32 and the second indicator 42 can be an indicator rod or a pointer, etc.

[0039] The first gear 31 and the first indicator 32 can be coaxially arranged, and the second gear 41 and the second indicator 42 can also be coaxially arranged to avoid transmission errors caused by relative rotation between the first gear 31 and the first indicator 32 or between the second gear 41 and the first indicator 32, thereby improving the reliability of the measurement data. The first gear structure 3 is rotatably mounted on the outer wall of the first housing 11, and the second gear structure 4 is rotatably mounted on the outer wall of the second housing 12. The rotation process of the first gear structure 3 and the second gear structure 4 will not interfere with the liquid level changes of the measurement auxiliary liquid 2 located inside the first housing 11, thereby improving the accuracy of the measurement data and simplifying the maintenance of the first gear structure 3 and the second gear structure 4.

[0040] Specifically, the first gear structure 3 further includes a first mounting shaft 33, which is fixedly disposed on the first housing 11. The first gear 31 and the first indicator 32 are both rotatably connected to the first mounting shaft 33. The second gear structure 4 further includes a second mounting shaft 43, which is fixedly disposed on the second housing 12. The second gear 41 and the second indicator 42 are both rotatably connected to the second mounting shaft 43. The first mounting shaft 33 provides a clear mounting position for the first gear 31 and the first indicator 32, and the second mounting shaft 43 provides a clear mounting position for the second gear 41 and the second indicator 42, reducing assembly difficulty and improving installation efficiency. For example, the axis of the first mounting shaft 33 is the center of the first housing 11, and the axis of the second mounting shaft 43 is the center of the second housing 12, thereby improving the overall structural stability of the slope measuring device.

[0041] The rotation of the first indicator 32 can be manually adjusted by the operator, or it can be driven by a rotary drive device such as an electric motor or hydraulic motor. In this embodiment, the first indicator 32 is arranged radially along the first gear 31, and the length of the first indicator 32 is greater than the diameter of the first gear 31, so as to facilitate the operator to adjust the rotation of the first indicator 32, and also to facilitate the operator to observe whether the first indicator 32 is flush with the liquid level of the measuring auxiliary liquid 2.

[0042] The first indicator 32 may include a first indicator portion 321, a connecting portion 322, and a second indicator portion 323 connected in sequence. The centerline of the first indicator portion 321 is flush with one end of the measuring auxiliary liquid 2, and the centerline of the second indicator portion 323 is flush with the other end of the measuring auxiliary liquid 2. The first indicator portion 321 and the second indicator portion 323 provide a clear reference for whether the first indicator 32 is flush with the two ends of the measuring auxiliary liquid 2, improving the adjustment accuracy of the first indicator 32 and thus improving the slope measurement accuracy of the slope to be measured. The first indicator 32 may be a bidirectional pointer, i.e., the first indicator portion 321 and the second indicator portion 323 are triangular, and the connecting portion 322 is rod-shaped. Specifically, the connecting portion 322 is arranged radially along the first gear 31, and both ends of it protrude beyond the outer edge of the first gear 31. The first indicator portion 321 and the second indicator portion 323 are located at the two ends of the connecting portion 322, respectively, to facilitate the operator's position adjustment of the first indicator 32 and improve operational convenience.

[0043] The slope measuring unit 5 can be disposed on the second indicator 42, the second gear 41, or the second housing 12. In one embodiment, the slope measuring unit 5 is a scale plate disposed on the outer wall of the second housing 12. The scale plate includes multiple slope marking lines. When the first indicator 32 is rotated to be flush with the liquid level of the measuring auxiliary liquid 2, the slope corresponding to the slope marking line indicated by the second indicator 42 is the slope value of the slope to be measured. By setting a scale plate marked with slope values, the process of obtaining measurement data can be simplified.

[0044] Optionally, the number of teeth on the second gear 41 is less than the number of teeth on the first gear 31, and the gear ratio between the second gear 41 and the first gear 31 can be in the range of 1:7 to 1:3, so that the rotation angle of the second gear 41 is 3-7 times that of the first gear 31, making the slope measuring device proposed in this invention suitable for measuring roads with small slopes. In the measurement of roads with small slopes, compared with directly measuring the slope of the slope to be measured based on the rotation of the first gear 31, this embodiment, by setting the second gear 41 with fewer teeth than the first gear 31, makes it easier for the operator to observe the rotation angle of the second gear 41 and read the slope data, reducing reading errors and improving the accuracy and reliability of the measurement data. In this embodiment, the gear ratio between the second gear 41 and the first gear 31 is 1:5. It is understood that in the measurement of the same slope, when the gear ratios of the second gear 41 and the first gear 31 are different, the rotation amplitude of the second indicator 42 when rotating the first indicator 32 will also be different. The smaller the gear ratio between the second gear 41 and the first gear 31, the greater the rotation amplitude of the second indicator 42 after rotating the first indicator 32.

[0045] In other embodiments, the slope measuring unit 5 can also be an angle sensor mounted on the second indicator 42 or the second gear 41 fixedly connected to the second indicator 42. The operator can directly observe the rotation angle of the second indicator 42. Based on the rotation angle of the second indicator 42 measured by the angle sensor, and combined with the gear ratio of the first gear 31 and the second gear 41 used in the slope measuring device, the rotation angle of the first gear 31 is obtained. Since the first indicator 32 can rotate to be flush with the surface of the measuring auxiliary liquid 2 and the surface of the measuring auxiliary liquid 2 is parallel to the horizontal plane, it can be known that the rotation angle of the first indicator 32 is the same as the slope angle of the slope to be measured. The slope is the ratio of the vertical height to the horizontal width of the slope to be measured. The slope of the slope to be measured can be obtained by taking its sine value based on the rotation angle of the first gear 31. Specifically, the angle measuring range of the slope measuring unit 5 is 0° to 90°, making it suitable for road measurement operations under various slopes and improving the versatility of the slope measuring device. For example, when the gear ratio of the second gear 41 and the first gear 31 is 1:5, when the slope measuring unit 5 measures the rotation angle of the second indicator 42 as 55°, it can be known that the rotation angle of the first gear 31 is 11°, and the slope of the slope to be measured is tan11°, which is 19.4%.

[0046] In this embodiment, the slope measuring unit 5 uses a graduated dial. To facilitate readings from multiple angles, a graduated dial is provided on the outer wall of the second housing 12, and a graduated dial is provided on the top surface of the second housing 12. For ease of description, the graduated dial on the outer wall of the second housing 12 is referred to as the first graduated dial, and the graduated dial on the top surface of the second housing 12 is referred to as the second graduated dial. The first and second graduated dials have completely identical structures, both having multiple marking lines indicating the corresponding slope. The second indicator 42 may include a third indicator 421 and a fourth indicator 422 arranged at an angle. The third indicator 421 is fixedly connected to the second gear 41, and the fourth indicator 422 is located above the second housing 12. The third indicator 421 and the second gear 41 may be coaxially arranged to reduce the transmission error between the second gear 41 and the second indicator 42. When the first indicator 32 rotates, causing the second indicator 42 to rotate, the third indicator 421 and the fourth indicator 422 rotate synchronously. The positions of the first and second dials ensure that the slope values ​​indicated by the third and fourth indicators 421 and 422 are consistent. The placement of the first and second dials, along with the third and fourth indicators 421 and 422 on the second housing 12, meets the multi-angle measurement needs of operators performing slope measurement operations, avoiding difficulties in reading due to limitations in the measurement scenario, and improving the scenario applicability of the slope measuring device.

[0047] In this embodiment, the first housing 11 has a rectangular longitudinal section, and the second housing 12 has a semi-circular longitudinal section. The first housing 11 is a cuboid with a rectangular hollow cavity. The measuring auxiliary liquid 2 is placed inside the rectangular hollow cavity, and the liquid level of the measuring auxiliary liquid 2 changes uniformly and stably within the first housing 11 as the road slope changes. The second housing 12 is a semi-cylindrical shape, which can conform to the actual rotation trajectory of the second indicator 42. Compared with processing the main body 1 into two separate cuboids, this reduces the overall space occupied by the main body 1 and improves portability.

[0048] Optionally, the center of the liquid surface of the measuring auxiliary liquid 2 coincides with the center of the first housing 11, and the rotation center of the first gear 31 is at the same height as the center of the liquid surface of the measuring auxiliary liquid 2. This makes the pointing of the first indicator 32, which is flush with the liquid surface, more accurate, avoiding visual errors caused by the height difference between the rotation center of the first gear 31 and the center of the liquid surface of the measuring auxiliary liquid 2, and improving the accuracy of the measurement data. To improve the structural stability of the slope measuring device and reduce transmission errors, the rotation center of the second gear 41 should be at the same height as the center of the second housing 12, and the rotation center of the second gear 41 and the rotation center of the first gear 31 should be on the same vertical line.

[0049] The level of the measuring auxiliary liquid 2 varies depending on the slope of different road surfaces, but its level always remains parallel to the horizontal plane under the influence of gravity. The measuring auxiliary liquid 2 can be a colored liquid, allowing operators to visually observe changes in its level. Optionally, the colored liquid can be a liquid prepared by adding a water-soluble colored dye to water. It is understood that the colored liquid used in this embodiment is characterized by stable properties, resistance to deterioration, antifreeze properties, and minimal volume change with temperature.

[0050] For example, the slope measurement operation process is as follows: First, place the slope measuring device on the slope to be measured, so that the bottom surface of the first housing 11 is in contact with the slope to be measured. After the liquid surface of the measuring auxiliary liquid 2 is stable, rotate the first indicator 32 until it is flush with the liquid surface of the measuring auxiliary liquid 2, and read the slope value corresponding to the slope marking line indicated by the second indicator 42. The slope of the slope to be measured can be obtained intuitively, and the slope measurement operation of the slope to be measured is completed.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A slope measuring device, characterized in that, include: The main body of the device (1) includes a first shell (11) and a second shell (12) connected to each other, and the bottom surface of the first shell (11) can be in contact with the slope to be measured; A measuring auxiliary liquid (2) is disposed inside the first housing (11), and the liquid surface of the measuring auxiliary liquid (2) is parallel to the horizontal plane; The first gear structure (3) is rotatably disposed on the outer wall surface of the first housing (11), including a first gear (31) and a first indicator (32) fixedly connected. The first indicator (32) can rotate to be flush with the liquid surface of the measuring auxiliary liquid (2). The second gear structure (4) is rotatably disposed on the outer wall surface of the second housing (12), including a second gear (41) and a second indicator (42) fixedly connected, wherein the second gear (41) meshes with the first gear (31); The slope measuring unit (5) is used to measure the slope of the slope to be measured.

2. The slope measuring device according to claim 1, characterized in that, The first indicator (32) includes a first indicator part (321), a connecting part (322), and a second indicator part (323) connected in sequence. The center line of the first indicator part (321) is able to be level with one end of the liquid surface of the measuring auxiliary liquid (2), and the center line of the second indicator part (323) is able to be level with the other end of the liquid surface of the measuring auxiliary liquid (2).

3. The slope measuring device according to claim 1, characterized in that, The first indicator (32) is arranged radially along the first gear (31), and the length of the first indicator (32) is greater than the diameter of the first gear (31).

4. The slope measuring device according to claim 1, characterized in that, The gear ratio between the second gear (41) and the first gear (31) ranges from 1:7 to 1:

3.

5. The slope measuring device according to claim 1, characterized in that, The slope measuring unit (5) is an angle sensor installed on the second gear (41) or the second indicator (42).

6. The slope measuring device according to claim 5, characterized in that, The angle measurement range of the slope measuring unit (5) is 0° to 90°.

7. The slope measuring device according to any one of claims 1-6, characterized in that, The second indicator (42) includes a third indicator (421) and a fourth indicator (422) arranged at an angle. The third indicator (421) is fixedly connected to the second gear (41), and the fourth indicator (422) is disposed above the second housing (12).

8. The slope measuring device according to any one of claims 1-6, characterized in that, The first housing (11) has a rectangular longitudinal section, and the second housing (12) has a semi-circular longitudinal section.

9. The slope measuring device according to any one of claims 1-6, characterized in that, The center of the liquid surface of the measuring auxiliary liquid (2) coincides with the center of the first housing (11), and the rotation center of the first gear (31) is at the same height as the center of the liquid surface of the measuring auxiliary liquid (2).

10. The slope measuring device according to any one of claims 1-6, characterized in that, The measuring auxiliary liquid (2) is a colored liquid.

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