A route measuring device for highway design

Abstract

The utility model discloses a route measuring device for highway design belongs to route measurement field. Mainly include measuring assembly, and measuring assembly includes the main rod and the auxiliary rod of mutual embedding, and the main rod rear end installs U type concave board, and the cleaning assembly includes the cover plate of installing in the concave board side, and the cover plate is transversely passed through and is installed the rotation axis, and is provided with two groups of linkage on the rotation axis, and each group linkage contains the first bevel gear of the sleeve joint on the rotation axis, and the worm that is engaged with the first bevel gear, and the worm has the second bevel gear, and the vertical bearing of cover plate installs the drive link, and the connecting rod one end is along the radial even distribution multiple group of the leaf of stirring, and the worm wheel of engaging with the worm is sleeved on the drive link, and the second pulley is installed on the measuring wheel center axle, and the first pulley is installed one end of rotation axis, and the belt body is connected between the pulley. A route measuring device for highway design of the application, through the adjustable and locking of measuring device main auxiliary rod, the cleaning assembly prevents the accurate.

Description

Technical Field

[0001] This utility model relates to the field of route measurement technology, and in particular to a route measurement device for highway design. Background Technology

[0002] In modern transportation infrastructure construction, the design and planning of highways require precise route measurement. The measurement results directly affect the construction quality, cost control, and subsequent traffic safety and efficiency. Currently, highway route measurement mainly relies on traditional equipment such as total stations, GPS positioning devices, and distance measuring wheels. In practical applications of hand-operated roller rangefinders, obstacles such as pebbles, branches, and protrusions on the ground can interfere with the measurement results. When the rangefinder encounters such obstacles during its movement, the roller can be momentarily lifted off the ground, causing it to spin freely. At this time, the counter continues to record the number of rotations, but the actual distance traveled does not increase, resulting in a final measurement value significantly greater than the actual distance, leading to a large error.

[0003] Furthermore, when faced with unavoidable obstacles, the roller may exhibit several abnormal conditions: First, when attempting to cross small stones or branches, the roller may experience severe jolting, causing the trajectory to deviate from the intended path and affecting the accuracy of the straight-line measurement. Second, small obstacles may become lodged in the gaps between the roller and the axle or support frame, hindering the roller's normal rotation and even damaging transmission components (such as gears and encoders). In such cases, the operator must manually lift the rangefinder to bypass the obstacle, during which the roller may generate additional rotation unrelated to the measurement requirements, further compromising the continuity and accuracy of the measurement. Therefore, a route measurement device for highway design needs to be designed.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0005] This utility model provides a route measurement device for highway design to solve the problems of hand-pushed roller rangefinders easily spinning, deviating due to bumps or getting stuck when encountering obstacles such as small stones and tree branches, resulting in large measurement errors, easily damaged parts, and affecting continuity.

[0006] The present invention adopts the following technical solution: a route measurement device for highway design. The device includes a measuring component, a gripping component, and a cleaning component. The measuring component comprises a main rod and a secondary rod nested together, with a U-shaped concave plate fixedly mounted at the rear end of the main rod. The cleaning component includes a cover plate mounted on the side of the concave plate, the bottom of which has a concave structure. A rotating shaft is horizontally mounted through the cover plate, and two sets of linkage parts are provided on the rotating shaft. Each set of linkage parts includes a first bevel gear sleeved on the rotating shaft and a worm gear meshing with the first bevel gear. One end of the worm gear has a second bevel gear, and one end of the worm gear is connected to the cover plate through a bearing, while the other end is supported by a bearing seat. A drive rod is mounted on a vertical bearing on the cover plate, with a connecting rod threaded to one end. Multiple sets of actuating blades are evenly distributed radially near the ground at one end of the connecting rod, and the actuating blades of the two sets of linkage parts are staggered. A worm wheel meshing with the worm gear is sleeved on the drive rod. A second pulley is mounted on one end of the central shaft of the measuring wheel, and a first pulley is mounted on the end of the rotating shaft that extends out of the cover plate. A belt body connects the second pulley and the first pulley.

[0007] Furthermore, the gripping assembly includes a sleeve portion installed at one end of the auxiliary rod. The sleeve portion has a hollow cylindrical structure with anti-slip threads on its inner wall, which can tightly fit the auxiliary rod. A display is fixedly mounted on the surface of the sleeve portion by bolts. The display is electrically connected to the counter through a shielded cable and has a built-in microprocessor.

[0008] Furthermore, a fixing part is installed on the sleeve part, and two sets of support plates are vertically fixed on the upper surface of the fixing part. The two sets of support plates are symmetrically distributed and maintain an appropriate distance to form a U-shaped support structure. A coaxial mounting hole is opened on the upper part of the support plate, and the grip part is movably connected through a rotating rod. A torsion spring is provided between the rotating rod and the grip part so that the grip part maintains a specific angle in its natural state. The fixing part is elastically supported by a spring, and the pressing part is a columnar structure. In the initial state, it keeps in contact with the surface of the rotating rod under the action of the spring, forming a damping positioning effect. The fixing part has an axial through hole that matches the pressing part, ensuring that the pressing part can slide freely along the hole.

[0009] Furthermore, the front end of the main rod is equipped with an elastic locking part, which is an elastic ring structure with a radial notch. Its inner wall forms a sliding fit with the outer surface of the auxiliary rod. Two sets of parallel protrusions are symmetrically arranged on both sides of the notch of the locking part. Coaxial through holes are provided at the corresponding positions of the two sets of protrusions for installing a transversely penetrating connecting rod. The connecting rod has limiting bosses at both ends, the diameter of which is larger than the diameter of the through hole of the protrusion, to ensure that the connecting rod can rotate freely while being axially limited. An eccentric locking component is vertically installed at the right end of the connecting rod. The locking component forms a rotating pair with the connecting rod through a deep groove ball bearing, and the eccentric wheel has an arc-shaped protrusion on its contour.

[0010] Furthermore, the U-shaped concave plate has two side plates, and the measuring wheel is pivotally connected between the two side plates of the concave plate via bearings. The hub end face of the measuring wheel is evenly distributed with light-shielding holes. A photoelectric counter is fixedly installed on the outer side of the right side plate by an internal hexagon screw. The input shaft of the counter is rigidly connected to the central shaft of the measuring wheel through an elastic coupling, thus forming an incremental encoder structure.

[0011] Furthermore, the display is a high-brightness liquid crystal display screen with a scratch-resistant and wear-resistant coating on its surface.

[0012] Furthermore, the display interface integrates operation buttons, allowing users to perform zeroing and unit conversion functions via the buttons.

[0013] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: A route measurement device for highway design utilizes a nested structure of main and auxiliary rods in the measurement component, coupled with an elastic locking mechanism, to flexibly adjust the measurement length and securely lock it in place. The cleaning component, driven by a rotating measuring wheel and a drive belt, in turn drives the first bevel gear and worm gear of the rotating shaft and linkage, causing the staggered actuating blades on the drive rod to rotate. This creates a spiral cleaning area in front of the measuring wheel, proactively pushing away obstacles such as small stones and branches, preventing the measuring wheel from being lifted and spinning freely. Simultaneously, the self-locking characteristics of the worm gear and worm wheel can prevent reverse transmission when encountering significant resistance, preventing the counter from being falsely triggered. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0015] In the attached diagram: Figure 1 This is an overall schematic diagram of a route measurement device for highway design according to this application; Figure 2 for Figure 1 A schematic diagram of the bottom structure; Figure 3 for Figure 2 Exploded view; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 for Figure 2 Enlarged view of point B; Figure label: 1. Measuring assembly; 11. Main rod; 12. Secondary rod; 13. Locking part; 14. Protrusion; 15. Locking element; 16. Concave plate; 17. Measuring wheel; 18. Counter; 2. Grip assembly; 21. Sleeve part; 22. Display; 23. Fixing part; 24. Support plate; 25. Grip part; 251. Rotating rod; 27. Pressing part; 28. Spring; 3. Cleaning assembly; 31. Cover plate; 32. Rotating shaft; 33. First bevel gear; 34. Worm gear; 35. Second bevel gear; 36. Drive rod; 37. Worm wheel; 38. Connecting rod; 381. Actuating blade; 39. First pulley; 310. Second pulley; 311. Belt body. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Reference Figures 1 to 5 As shown, this utility model embodiment provides a route measurement device for highway design, including a measurement component 1, a gripping component 2, and a cleaning component 3; The measuring assembly 1 includes a main rod 11 and a secondary rod 12 nested together, forming a telescopic sleeve structure. An elastic locking part 13 is fixedly installed at the front end of the main rod 11. This locking part 13 is an elastic ring structure with a radial notch, and its inner wall forms a sliding fit with the outer surface of the secondary rod 12. Two sets of parallel protrusions 14 are symmetrically arranged on both sides of the notch of the locking part 13. Corresponding positions of the two sets of protrusions 14 are provided with coaxial through holes for installing a transversely penetrating connecting rod (not shown in the figure). The connecting rod adopts a stepped shaft structure with limiting bosses at both ends. The diameter of these bosses is larger than the diameter of the through hole of the protrusion 14, ensuring that the connecting rod can rotate freely while being axially limited. An eccentric locking component 15 is vertically installed at the right end of the connecting rod (viewed from the axis of the main rod 11). This locking component 15 forms a rotating pair with the connecting rod through a deep groove ball bearing, and its eccentric wheel profile has an arc-shaped protrusion. When it is necessary to adjust the extension length of the auxiliary rod 12, by rotating the locking member 15 (viewed from the right side), the protrusion gradually moves away from the protrusion 14 below. At this time, the notch width of the locking part 13 increases and the inner diameter expands, allowing the auxiliary rod 12 to slide freely. When the target position is reached, the locking member 15 is rotated in the opposite direction, and the protrusion squeezes the protrusion 14, forcing the notch width of the locking part 13 to decrease and the inner diameter to contract, thereby locking the position of the auxiliary rod 12 through friction.

[0019] A U-shaped concave plate 16 is fixedly installed at the rear end of the main rod 11. The distance between the two side plates of the U-shaped concave plate 16 is 60mm. The measuring wheel 17 is pivotally connected between the two side plates of the concave plate 16 via bearings. The hub end face of the measuring wheel 17 has 60 evenly distributed φ2mm light-blocking holes (pitch circle diameter φ40mm). A photoelectric counter 18 (model: Omron E6B2-CWZ6C) is fixedly installed on the outer side of the right side plate via hexagonal socket screws. The input shaft of the counter 18 and the central shaft of the measuring wheel 17 are rigidly connected via a flexible coupling (material: polyurethane, Shore A90 hardness) to form an incremental encoder structure.

[0020] The cleaning assembly 3 includes a cover plate 31 fixedly installed on the side of the concave plate 16, the bottom surface of which is concave. A rotating shaft 32 is horizontally installed through the cover plate 31. Two sets of linkage parts are provided on the rotating shaft 32. Each set of linkage parts includes a first bevel gear 33 fixedly sleeved on the rotating shaft 32 and a worm gear 34 meshing with the first bevel gear 33. One end of the worm gear 34 has a second bevel gear 35. One end of the worm gear 34 is connected to the cover plate 31 through a bearing, and the other end is supported by a bearing seat (not shown in the figure). A drive rod 36 is mounted on a vertical bearing on the cover plate 31. One end of the drive rod 36 is threaded to a connecting rod 38. Multiple sets of actuating blades 381 are evenly distributed radially near the ground at one end of the connecting rod 38, and the actuating blades 381 of the two sets of linkage parts are arranged in an alternating manner. At the same time, a worm wheel 37 that meshes with the worm 34 is fixedly sleeved on the drive rod 36. A second pulley 310 is fixedly installed at one end of the central shaft of the measuring wheel 17. A first pulley 39 is fixedly installed at one end of the rotating shaft 32 that passes through the cover plate 31. A belt body 311 connects the second pulley 310 and the first pulley 39.

[0021] When the measuring wheel 17 rolls, its kinetic energy is transmitted to the rotating shaft 32 via belt drive, driving the first bevel gear 33 to rotate. The first bevel gear 33 meshes with the second bevel gear 35, driving the worm gear 34 and drive rod 36 to rotate, causing the agitator blades 381 to form a rotating cleaning area in front of the measuring wheel 17. The agitator blades 381, made of elastic material (such as polyurethane with a Shore hardness of A85), deform when they come into contact with obstacles, using rotational impact force to push small stones, branches, and other foreign objects to both sides, preventing them from directly impacting the measuring wheel 17. The staggered arrangement of the agitator blades 381 forms a continuous spiral cleaning trajectory, effectively covering the width direction of the measuring wheel 17 and improving cleaning efficiency.

[0022] When an obstacle causes the measuring wheel 17 to be lifted momentarily, the cleaning assembly 3 suppresses errors through a dual mechanism: First, the transmission pair formed by the worm gear 34 and the drive rod 36 has a self-locking characteristic. When the actuating blade 381 encounters increased resistance due to contact with an obstacle, it can block the reverse transmission and prevent the counter 18 from being falsely triggered due to the idling of the measuring wheel 17. Second, the elastic buffering effect of the actuating blade 381 reduces the bounce amplitude of the measuring wheel 17, shortens the idling time, and reduces the probability of false counting.

[0023] The cleaning component 3 improves measurement reliability through pre-contact protection and dynamic response mechanism: during travel, the agitator 381 contacts the obstacle before the measuring wheel 17, and guides it to both sides through helical thrust, reducing the deviation of the route caused by bumps; when encountering an insurmountable obstacle, the operator does not need to lift the rangefinder, the continuous cleaning action of the agitator 381 can keep the environment around the measuring wheel 17 clean, and avoid forced shutdown caused by foreign objects getting stuck. Meanwhile, the threaded connection between the connecting rod 38 and the drive rod 36 facilitates quick disassembly and cleaning, ensuring measurement continuity during long-term use. Through the above design, the cleaning assembly 3 reduces measurement errors caused by obstacle interference, improving the applicability of the hand-pushed roller rangefinder in complex ground environments.

[0024] Specifically, the grip assembly 2 includes a sleeve 21 fixedly installed at one end of the auxiliary rod 12. The sleeve 21 has a hollow cylindrical structure with anti-slip threads on its inner wall, which can tightly fit the auxiliary rod 12 to ensure a stable connection. A display 22 is fixedly installed on the surface of the sleeve 21 by bolts. The display 22 is a high-brightness liquid crystal display screen with a scratch-resistant and wear-resistant coating on its surface, making it suitable for outdoor use.

[0025] The display 22 is electrically connected to the counter 18 via a shielded cable, and its anti-interference design ensures stable data transmission. Its built-in microprocessor can receive and process the pulse signals sent by the counter 18 in real time, converting the number of rotations of the measuring wheel 17 into a visually appealing distance value for display, supporting switching between multiple units such as meters and feet. Simultaneously, the display 22 interface integrates operation buttons, allowing users to perform functions such as zeroing and unit conversion, facilitating quick adjustments to settings during measurement.

[0026] Specifically, a fixing part 23 is fixedly installed on the sleeve part 21. Two sets of support plates 24 are vertically fixed to the upper surface of the fixing part 23. The two sets of support plates 24 are symmetrically distributed and maintain an appropriate distance to form a U-shaped support structure. The upper part of the support plate 24 has a coaxial mounting hole, and the grip part 25 is movably connected through a rotating rod 251. A torsion spring is provided between the rotating rod 251 and the grip part 25 so that the grip part 25 maintains a specific angle in its natural state.

[0027] The fixing part 23 is elastically supported by the holding part 27 by the spring 28. The holding part 27 has a columnar structure and initially maintains contact with the surface of the rotating rod 251 under the action of the spring 28, forming a damping positioning effect. The fixing part 23 has an axial through hole that matches the holding part 27, ensuring that the holding part 27 can slide freely along the hole.

[0028] When the operator grips the holding part 25 and rotates it towards the ground, the holding part 25 rotates around the axis of the rotating rod 251, causing the holding part 25 to tilt towards the auxiliary rod 12. At this time, the pressing part 27 slides along the through hole of the fixing part 23 under the action of the spring 28 and maintains contact with the rotating rod 251, providing stable friction. This allows the holding part 25 to stay at any set angle. At this time, the actuating blade 381 is parallel to the ground, so that the operator can hold and push the measuring device to perform the measurement. After the measurement is completed, the holding part 25 is released, and the torsion spring automatically returns it to the initial angle, making it easy to store and carry.

[0029] In summary: During the measurement process, the user first adjusts the extension length of the main rod 11 and the auxiliary rod 12 by rotating the eccentric locking member 15 in the measuring component 1 to adapt to the measurement requirements. After adjustment, the locking member 15 is rotated in the opposite direction, and the inner diameter of the elastic locking part 13 is contracted to lock the auxiliary rod 12. When the device is pushed, the measuring wheel 17 rolls on the ground, and the light-shielding hole on its hub end face cuts the light path of the photoelectric counter 18, generating A / B phase quadrature pulse signals. These signals are converted into travel distance by the built-in microprocessor and displayed in real time on the display 22 of the holding component 2.

[0030] The cleaning assembly 3 provides reliable protection for the measurement process. When the measuring wheel 17 rolls, its kinetic energy is transmitted to the rotating shaft 32 through the belt 311, driving the first bevel gear 33 and the worm gear 34 to drive the drive rod 36 and the agitator blades 381 on the connecting rod 38 to rotate. The agitator blades 381, made of elastic material, are arranged in an alternating spiral cleaning trajectory to push away obstacles such as small stones and branches in front of the measuring wheel 17, preventing the measuring wheel 17 from being lifted and spinning freely. At the same time, the self-locking characteristics of the worm gear 34 and the drive rod 36 can block reverse transmission when the agitator blades 381 encounter resistance, preventing the counter 18 from counting incorrectly. In addition, the concave bottom design of the cover plate 31 can prevent larger foreign objects from entering the wheel axle area, reducing the risk of jamming and protecting the transmission components.

[0031] The grip assembly 2 further optimizes the user experience and measurement accuracy. The user can grasp and rotate the grip 25 to adjust to a comfortable grip angle. The friction between the pressing part 27 and the rotating rod 251 keeps the grip 25 fixed, ensuring stable pushing. After measurement, the torsion spring automatically resets for easy storage. The display 22 features anti-interference design and multi-unit switching function, allowing operators to obtain accurate measurement data in real time.

[0032] The cleaning component 3 uses the kinetic energy of the measuring wheel 17 to drive the agitator blade 381 to rotate at high speed, pushing away obstacles in advance with a spiral trajectory. The self-locking characteristic of the worm gear 34 prevents idling and false counting. At the same time, the elastic material buffers the impact, and the concave cover prevents foreign objects from getting stuck. The adjustable angle structure of the grip component allows the operator to lock the grip angle according to their habits, avoiding additional rotation errors caused by manual lifting. This improves the accuracy of measurement in complex ground environments, the durability of the equipment, and the continuity of operation, effectively solving the core problems of traditional rangefinders such as idling and false counting caused by obstacles, route deviation, and operation interruption.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A route measurement device for highway design, comprising a measurement component (1), a gripping component (2), and a cleaning component (3), characterized in that: The measuring component (1) includes a main rod (11) and a secondary rod (12) nested together, with a U-shaped concave plate (16) fixedly installed at the rear end of the main rod (11); The cleaning assembly (3) includes a cover plate (31) installed on the side of the concave plate (16), the bottom surface of which is concave. A rotating shaft (32) is installed horizontally through the cover plate (31). Two sets of linkage parts are provided on the rotating shaft (32). Each set of linkage parts includes a first bevel gear (33) sleeved on the rotating shaft (32) and a worm (34) meshing with the first bevel gear (33). One end of the worm (34) has a second bevel gear (35). One end of the worm (34) is connected to the cover plate (31) through a bearing, and the other end is supported by a bearing seat. A drive rod (36) is mounted on a vertical bearing on the cover plate (31). One end of the drive rod (36) is threaded to a connecting rod (38). Multiple sets of actuating blades (381) are evenly distributed radially near the ground at one end of the connecting rod (38), and the actuating blades (381) of the two sets of linkage parts are arranged in an alternating manner. A worm wheel (37) that meshes with the worm (34) is sleeved on the drive rod (36). A second pulley (310) is installed at one end of the central shaft of the measuring wheel. A first pulley (39) is installed at one end of the rotating shaft (32) that passes through the cover plate (31). A belt body (311) is connected between the second pulley (310) and the first pulley (39).

2. The route measurement device for highway design according to claim 1, characterized in that: The grip assembly (2) includes a sleeve (21) installed at one end of the sub-rod (12). The sleeve (21) has a hollow cylindrical structure and its inner wall is provided with anti-slip threads, which can tightly fit the sub-rod (12). The surface of the sleeve (21) is fixedly mounted with a display (22) by bolts. The display (22) is electrically connected to the counter (18) through a shielded cable and has a built-in microprocessor.

3. The route measurement device for highway design according to claim 2, characterized in that: A fixing part (23) is installed on the sleeve part (21). Two sets of support plates (24) are vertically fixed on the upper surface of the fixing part (23). The two sets of support plates (24) are symmetrically distributed and maintain an appropriate distance to form a U-shaped support structure. The upper part of the support plate (24) is provided with a coaxial mounting hole. The grip part (25) is movably connected through the rotating rod (251). A torsion spring is provided between the rotating rod (251) and the grip part (25) so that the grip part (25) maintains a specific angle in its natural state. The fixing part (23) is elastically supported by the spring (28) for the holding part (27). The holding part (27) is a columnar structure. In the initial state, it is in contact with the surface of the rotating rod (251) under the action of the spring (28) to form a damping positioning effect. The fixing part (23) has an axial through hole that matches the holding part (27) to ensure that the holding part (27) can slide freely along the hole.

4. The route measurement device for highway design according to claim 3, characterized in that: The front end of the main rod (11) is equipped with an elastic locking part (13). The locking part (13) is an elastic ring structure with a radial notch. Its inner wall forms a sliding fit with the outer surface of the auxiliary rod (12). Two sets of parallel protrusions (14) are symmetrically arranged on both sides of the notch of the locking part (13). The corresponding positions of the two sets of protrusions (14) are provided with coaxial through holes for installing a transversely penetrating connecting rod. The connecting rod is provided with limiting bosses at both ends, the diameter of which is larger than the diameter of the through hole of the protrusion (14) to ensure that the connecting rod can rotate freely while being axially limited. An eccentric locking member (15) is vertically installed at the right end of the connecting rod. The locking member (15) forms a rotating pair with the connecting rod through a deep groove ball bearing, and an arc-shaped protrusion is provided on the contour of its eccentric wheel.

5. The route measurement device for highway design according to claim 4, characterized in that: The U-shaped concave plate (16) has two side plates. The measuring wheel (17) is pivotally connected between the two side plates of the concave plate (16) through a bearing. The hub end face of the measuring wheel (17) is evenly distributed with light-shielding holes. The photoelectric counter (18) is fixedly installed on the outer side of the right side plate by an internal hexagon screw. The input shaft of the counter (18) is rigidly connected to the central shaft of the measuring wheel (17) through an elastic coupling, forming an incremental encoder structure.

6. The route measurement device for highway design according to claim 5, characterized in that: The display (22) is a high-brightness liquid crystal display screen with a scratch-resistant and wear-resistant coating on its surface.

7. A route measurement device for highway design according to claim 6, characterized in that: The display (22) interface integrates operation buttons, and users can perform zeroing and unit conversion functions through the buttons.

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