A distance measuring device suitable for multiple terrains

Abstract

The invention discloses a distance measuring device suitable for multiple terrains, and relates to the technical field of distance measuring devices. The device comprises a handle, wherein the bottom of the handle is rotatably connected to a roller, a counter is installed at the bottom of the handle, and an anti-skid mechanism is also included. The anti-skid mechanism comprises a center disk fixed to the bottom of the handle and rotatably connected to the roller, a plurality of connecting rods arranged in a circumferential array are slidably connected inside the roller, a spring a is arranged between the roller and the connecting rod, a metal sheet is fixedly connected to the outer end of the connecting rod, a limiting plate is fixedly connected to the inner wall of the center disk, a limiting component for limiting the metal sheet from popping out is arranged inside the center disk, and the friction force received by the roller when rotating is increased by making the metal sheets inside the roller pop out and embed into an ice layer in turn, so as to avoid the roller slipping during the rolling process and causing errors in the measurement results, and at the same time, the metal sheet embedded in the ice layer can also position the roller, so that the roller keeps rolling in a straight line and is not easy to deviate from the distance measuring route, thereby improving the accuracy of the distance measuring.

Description

Technical Field

[0001] The present invention relates to the technical field of distance measuring devices, and in particular to a distance measuring device suitable for multiple terrains. Background Art

[0002] A distance measuring device is a tool that uses specific physical principles or technical means to obtain the length information between two target points in space. It generally includes laser rangefinders, total stations, and roller rangefinders. Among them, a roller rangefinder is an instrument that uses the rolling of a roller to measure distance. It is mainly composed of a roller, a counting device, a handle, and a display component. The core principle is based on the circular motion of the roller. By accurately recording the number of rotations of the roller and combining it with the circumference of the roller, the distance traveled can be calculated.

[0003] Traditional roller distance meters are suitable for relatively flat roads, such as highways and squares. They can also be used on dirt roads with a certain slope or uneven terrain. However, in some cold areas, roads often freeze and form ice layers. When the roller distance meter measures the distance on icy roads or directly on ice surfaces, the roller is prone to slipping when rolling on the ice layer, resulting in obvious errors in the measurement results. In order to overcome this problem, a distance measurement device that can be applied to ice layers and icy terrain is needed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when a roller rangefinder measures distance on an icy road surface or directly on an ice surface, the roller is prone to slipping when rolling on the ice layer, in order to solve the problem that the road surface in cold areas often freezes and forms an ice layer.

[0005] In order to achieve the above object, the present invention adopts the following technology: a distance measuring device suitable for multiple terrains, comprising a handle, a roller rotatably connected to the bottom of the handle, a counter installed at the bottom of the handle, and further comprising: The anti-slip mechanism comprises a central disk fixed to the bottom of the handle and rotatably connected to the roller, the roller is internally slidably connected to a plurality of connecting rods arranged in a circumferential array, a spring a is provided between the roller and the connecting rod, a metal sheet is fixedly connected to the outer end of the connecting rod, a limiting plate is fixedly connected to the inner wall of the central disk, and a limiting component for limiting the metal sheet from popping out is provided inside the central disk; Obstacle removal mechanism for clearing debris from the distance measurement route; When the roller rolls on the ground, each of the metal sheets is ejected by the spring a in turn and embedded into the ice layer, thereby increasing the friction force applied to the roller when the roller rolls.

[0006] As a further description of the above technology, a distance measuring device suitable for multiple terrains: the limiting component includes an arc-shaped plate slidably connected to the inside of the center disk, electromagnets are fixedly connected on both sides of the center disk, a magnetic block is fixedly connected to the inside of the arc-shaped plate, and a spring b is provided between the arc-shaped plate and the center disk. The magnetic attraction force generated when the electromagnet is energized drives the magnetic block to pull the arc-shaped plate, so that the arc-shaped plate opens the gap of the limit plate.

[0007] As a further description of the above technology, a distance measuring device suitable for multiple terrains is provided: a head unit is provided at one end of the connecting rod, and the head unit includes a mounting tube fixed to one end of the connecting rod, and both ends of the mounting tube are movably connected with rotating wheels, a support spring is provided between the two rotating wheels, and one side of the limit plate is an inclined surface.

[0008] As a further description of the above technology, a distance measuring device suitable for multiple terrains is provided: a protective frame is fixedly connected to the bottom of the handle, a cleaning unit is arranged between the protective frame and the roller, the cleaning unit includes a first scraper and a gasket fixed to the inner wall of the protective frame, a notch is provided at the highest point of the limiting plate, one side of the first scraper is inclined and the inclined surface is in contact with the metal sheet.

[0009] As a further description of the above technology, a distance measuring device suitable for multiple terrains is provided: an inner wall of the protective frame is fixedly connected to a ramp pressure plate, and a second scraper is fixedly connected to one side of the ramp pressure plate. When the roller rotates, the metal sheet is pressed into the interior of the roller by the ramp pressure plate, and during this process, the second scraper scrapes over the end of the metal sheet.

[0010] As a further description of the above technology, a distance measuring device suitable for multiple terrains: the obstacle removal mechanism includes a shell fixed to the bottom of the protective frame, a motor is fixedly installed inside the shell, and a push plate is provided at the bottom of the motor.

[0011] As a further description of the above technology, a distance measuring device suitable for multiple terrains is provided: a telescopic unit is arranged between the motor and the push plate, and the telescopic unit includes an outer tube fixed to the motor drive shaft, a round rod is slidably connected inside the outer tube, and a spring c is arranged between the round rod and the outer tube.

[0012] As a further description of the above technology, a distance measuring device suitable for multiple terrains is as follows: the interior of the outer shell is rotatably connected to two impellers, one of which is fixed to the driving shaft of the motor, and the exteriors of the two impellers are fixedly connected to gear rings and the two gear rings are meshed.

[0013] As a further description of the above technology, a distance measuring device suitable for multiple terrains is provided: a collecting structure is arranged inside the shell, and the collecting structure includes a collecting frame detachably connected to the inside of the shell, a filter is fixedly connected to the inner wall of the collecting frame, and an air inlet is opened on one side of the center disk.

[0014] As a further description of the above technology, a distance measuring device suitable for multiple terrains is provided: a separation assembly is provided at the bottom of the round rod, and the separation assembly includes a cylindrical member rotatably connected to the outside of the round rod and fixed to the push plate, a spring pin embedded in the top surface of the cylindrical member is installed on the round rod, a cam column is fixedly connected to the outside of the round rod, and a slat is slidably connected to the inside of the push plate, a return spring is provided between the slat and the push plate, a convex tooth is provided on one side of the slat, and one end of the slat passes through the push plate and the cylindrical member and contacts the cam column.

[0015] In summary, due to the use of the above-mentioned technology, a distance measurement device suitable for multiple terrains has the following beneficial effects: When measuring the distance on an ice layer or ice surface, the present application increases the friction force of the roller when it rotates by causing the metal sheets inside the roller to pop out and embed into the ice layer in sequence, thereby preventing the roller from slipping during the rolling process and causing errors in the measurement results. At the same time, the metal sheets embedded in the ice layer can also position the roller, so that the roller keeps rolling in a straight line and is not easy to deviate from the distance measurement route, thereby improving the accuracy of the distance measurement. Moreover, the arc plate can be used to close the gap of the limit plate to limit the popping out of the metal sheet, so that the device can be used normally when the road surface is not frozen, thereby improving the applicability of the device. The clearing unit can not only clear the ice layer frozen on the metal sheet, so as to prevent the metal sheet from being wrapped by the ice layer and reducing its sharpness during the long-term distance measurement process, thereby ensuring the use effect of the metal sheet, but also lock the roller by limiting the rotation of the metal sheet, so as to prevent the roller from rotating when the device is stored and causing the metal sheet to pop out, thereby improving the use safety of the device; By driving the push plate to rotate through the motor, the obstacle in front of the roller can be pushed to both sides during distance measurement, achieving the obstacle removal effect and avoiding the roller rolling and colliding with the obstacle to cause jumping and affect the measurement accuracy. In addition, some stones will be frozen when the road surface is icy. At this time, the slats and convex teeth can generate shear stress at the contact interface between the stone and the ice through friction, and make the stone vibrate. Compared with directly pushing the stone, this design can generate concentrated stress at the contact edge of the stone and the ice, making it easier to break the ice in a local area, so that the stone is easier to separate from the ice, improving the obstacle removal effect, and avoiding the roller sliding on the ice surface due to excessive reverse force during obstacle removal, resulting in position deviation, causing measurement interruption; The rotation of the impeller can not only generate downward airflow to clean up the ice chips generated on the push plate and when the metal sheet is embedded in the ice surface, prevent the ice chips from adhering to the roller and reducing the friction between the roller and the ice surface, but also suck out the ice chips that enter the cavity where the metal sheet is located inside the roller, achieve a dredging effect, avoid obstruction of the metal sheet when it is ejected, and thereby improve the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An overall schematic diagram provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of a roller provided according to an embodiment of the present invention is shown; Figure 3 A schematic cross-sectional view of a protection frame provided in an embodiment of the present invention is shown; Figure 4 The embodiment of the present invention provides Figure 3 Enlarged view of point A in the middle; Figure 5 A schematic cross-sectional view of a roller provided in an embodiment of the present invention is shown; Figure 6 The embodiment of the present invention provides Figure 5 Enlarged view of point B in the middle; Figure 7 A schematic cross-sectional view of a mounting tube according to an embodiment of the present invention is shown; Figure 8 A schematic cross-sectional view of a center disk provided according to an embodiment of the present invention is shown; Fig. 9 A schematic diagram of the interior of a housing provided according to an embodiment of the present invention is shown; Fig.10 A schematic diagram of a telescopic unit provided in an embodiment of the present invention is shown; Fig.11 A schematic cross-sectional view of a push plate provided according to an embodiment of the present invention is shown.

[0017] Legend: 10. Handle; 11. Roller; 12. Counter; 20. Anti-skid mechanism; 21. Center plate; 22. Connecting rod; 23. Spring a; 24. Metal sheet; 25. Limiting plate; 26. Limiting assembly; 261. Arc plate; 262. Electromagnet; 263. Magnetic block; 264. Spring b; 27. Head unit; 271. Mounting tube; 272. Rotating wheel; 273. Support spring; 28. Cleaning unit; 281. First scraper; 282. Gasket; 283. Oblique pressure plate; 284. Second scraper; 29. ​​Protective frame; 30. Obstacle removal mechanism; 31. Housing; 32. Motor; 33. Impeller; 34. Gear ring; 35. Telescopic unit; 351. Outer tube; 352. Round rod; 353. Spring c; 36. Push plate; 37. Separation assembly; 371. Spring pin; 372. Cylindrical member; 373. Cam column; 374. Slat; 375. Protruding tooth; 376. Return spring; 38. Collection structure; 381. Collection frame; 382. Filter. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a distance measuring device suitable for multiple terrains. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-Figure 11 As shown, the present invention provides a distance measuring device suitable for multiple terrains: comprising a handle 10, a roller 11 is rotatably connected to the bottom of the handle 10, a counter 12 is installed at the bottom of the handle 10, and the number of rotations of the roller 11 can be measured by the counter 12, and the distance is calculated according to the number of rotations and the circumference of the roller 11, and also includes: The anti-skid mechanism 20 includes a center disk 21 fixed to the bottom of the handle 10 and rotatably connected to the roller 11. The roller 11 is internally slidably connected to a plurality of connecting rods 22 arranged in a circular array. A spring a23 is provided between the roller 11 and the connecting rod 22. The spring a23 is always in a stretched state. A metal sheet 24 is fixedly connected to the outer end of the connecting rod 22. The metal sheet 24 is ridge-shaped. After popping out, its two corners will first contact the ice layer and then embed into the ice surface. Under the positioning of the corners, the roller 11 is difficult to deflect in direction, so that the roller 11 can maintain a straight line during the rolling process. , the measurement result is more accurate, the inner wall of the center disk 21 is fixedly connected to the limit plate 25, the limit plate 25 is used to control the ejection of the metal sheet 24, so that the metal sheet 24 can only be ejected when it is rotated to the oblique downward position in front of the roller 11, so that the ejected metal sheet 24 can be embedded in the ice surface, increasing the friction force when the roller 11 rolls, preventing slipping, and helping to avoid the roller 11 from deviating under the reverse force during subsequent obstacle removal. The roller 11 is provided with a cavity for limiting the ejection length of the metal sheet 24, and the center disk 21 is provided with a limiting component 26 for limiting the ejection of the metal sheet 24; An obstacle removal mechanism 30 for removing debris on the distance measurement route to prevent the roller 11 from colliding with debris and causing jumping when rolling for distance measurement; When the roller 11 rolls on the ground, each metal sheet 24 is ejected by the spring a23 in turn and embedded in the ice layer, thereby increasing the friction force on the roller 11 when rolling, preventing the roller 11 from slipping when measuring the distance on the icy road surface and ice surface, and improving the distance measurement effect.

[0020] Reference Figure 5 , Figure 6 and Figure 7 A head unit 27 is provided at one end of the connecting rod 22. The head unit 27 includes a mounting tube 271 fixed to one end of the connecting rod 22. The width of the mounting tube 271 is the same as the width between the two limit plates 25 inside the center disk 21. Both ends of the mounting tube 271 are movably connected with a rotating wheel 272. A supporting spring 273 is provided between the two rotating wheels 272. When the roller 11 rolls on the ground, it drives the connecting rod 22, the mounting tube 271 and the rotating wheel 272 to make a circular motion. At this time, the rotating wheel 272 rolls on the inner side of the limit plate 25. The spring a23 cannot eject the connecting rod 22, the mounting tube 271 and the metal sheet 24. When rolling to the gap of the limit plate 25, the rotating wheel 272 loses the support of the limit plate 25, so the elastic force of the spring a23 pushes the connecting rod 22 and the mounting tube 271, causing the metal sheet 24 to pop out. One side of the limit plate 25 is an inclined surface. When the metal sheet 24 rotates to the bottom of the roller 11, it will be pressed into the inside of the roller 11 by the ground. At this time, the rotating wheel 272 is squeezed by the inclined surface of the limit plate 25 and shrinks into the inside of the mounting tube 271. The support spring 273 is compressed until the mounting tube 271 passes through the limit plate 25 and enters the inner side of the limit plate 25. At this time, the support spring 273 pops out the rotating wheel 272, and the rotating wheel 272 is supported by the limit plate 25 again.

[0021] Reference Figure 5 and Figure 8 The limiting assembly 26 includes an arc plate 261 slidably connected to the inside of the center disk 21, electromagnets 262 are fixedly connected to both sides of the center disk 21, a magnetic block 263 is fixedly connected to the inside of the arc plate 261, and a spring b264 is provided between the arc plate 261 and the center disk 21. In the idle state, the elastic force of the spring b264 pushes the arc plate 261 away from the inner wall of the center disk 21, so that the distance between the arc plates 261 on both sides of the inner wall of the center disk 21 is equal to the distance between the limiting plates 25. At the same time, the arc plate 261 can support the rotating wheel 272, so that the metal sheet 24 will not pop out when the roller 11 rotates. In the operating state, the magnetic attraction force generated when the electromagnet 262 is energized drives the magnetic block 263 to pull the arc plate 261, so that the two arc plates 261 move away from each other to open the gap of the limit plate 25. When the rotating wheel 272 rotates to the gap of the limit plate 25, the metal sheet 24 is popped out by the spring a23, so that the metal sheet 24 can be embedded in the ice surface to increase the friction force on the roller 11 when it rolls.

[0022] Reference Figure 2 , Figure 3 and Figure 4 The bottom of the handle 10 is fixedly connected with a protective frame 29, and a cleaning unit 28 is arranged between the protective frame 29 and the roller 11. The cleaning unit 28 includes a first scraper 281 and a gasket 282 fixed to the inner wall of the protective frame 29. A notch is arranged at the highest point of the limiting plate 25. One side of the first scraper 281 is inclined and the inclined surface is in contact with the back side of the metal sheet 24. The purpose of the inclination is to match the movement trajectory of the metal sheet 24. The metal sheet 24 pops out from the notch at the highest point of the limiting plate 25 and contacts the bottom of the inclined side of the first scraper 281. At this time, the metal sheet 24 continues to rotate with the roller 11 and continues to extend outward. The edge of the metal sheet 24 moves upward from the bottom of the inclined surface of the first scraper 281 and rubs and scrapes with the first scraper 281. Therefore, the inclined surface of the first scraper 281 can prolong the contact time between the metal sheet 24 and the first scraper 281, and make the metal sheet 24 and the first scraper 281 fully rub, so as to remove the ice layer frozen on the edge of the metal sheet 24, and the gasket 282 buffers the popped-out metal sheet 24.

[0023] The inner wall of the protective frame 29 is fixedly connected with an inclined pressure plate 283, and one side of the inclined pressure plate 283 is fixedly connected with a second scraper 284. When the metal sheet 24 rotates with the roller 11, it is pressed into the interior of the roller 11 by the inclined pressure plate 283 to achieve the retraction of the metal sheet 24. During this process, the second scraper 284 scrapes across the end of the metal sheet 24 to scrape off the frozen ice layer at the inclined end of the metal sheet 24.

[0024] Reference Fig. 9The obstacle removal mechanism 30 includes a shell 31 fixed to the bottom of the protective frame 29, a motor 32 is fixedly installed inside the shell 31, and a push plate 36 is arranged at the bottom of the motor 32. When the push plate 36 rotates, the debris on the path in front of the roller 11 is pushed outward. The inside of the shell 31 is rotatably connected to two impellers 33, one of which is fixed to the driving shaft of the motor 32, and the outsides of the two impellers 33 are fixedly connected to a gear ring 34 and the two gear rings 34 are meshed. When the motor 32 drives one of the impellers 33 to rotate, the other impeller 33 is driven to rotate at the same time through the gear ring 34. A collecting structure 38 is arranged inside the shell 31, and the collecting structure 38 includes a collecting frame 381 detachably connected to the inside of the shell 31, and a filter screen 382 is fixedly connected to the inner wall of the collecting frame 381. An air inlet hole is opened on one side of the center disk 21, and the impeller 33 rotates. Negative pressure is generated inside the shell 31, so that external air enters the roller 11 through the air inlet hole of the center disk 21, and is sucked out from the cavity connected to the roller 11 and installed with the metal sheet 24, so as to clear the cavity inside the roller 11, and generate a downward airflow to blow out the ice chips attached to the push plate 36 and the ice chips generated when the metal sheet 24 is embedded in the ice surface, so as to avoid the roller 11 being attached to the ice chips and causing the friction to be reduced when rolling. Since the back side of the metal sheet 24 is close to the airflow direction when the metal sheet 24 is ejected, the back side of the metal sheet 24 can also guide the airflow, so that the airflow is dispersed to both sides after being blown out, thereby improving the cleaning effect of the airflow. The middle part of the collection frame 381 is raised and the filter screen 382 is located on the outer wall of the raised position, so as to prevent the water droplets generated by the melting of the ice residue after clearing from being retained in the collection frame 381, and to avoid the water droplets from passing through the filter holes of the filter screen 382.

[0025] Reference Fig.10 and Fig.11 A separation assembly 37 is provided at the bottom of the round rod 352. The separation assembly 37 includes a cylindrical member 372 rotatably connected to the outside of the round rod 352 and fixed to the push plate 36. A spring pin 371 embedded in the top surface of the cylindrical member 372 is installed on the round rod 352. When the round rod 352 rotates, the spring pin 371 drives the cylindrical member 372 to rotate, thereby driving the push plate 36 to rotate to remove stones and debris in the path in front of the roller 11. In order to prevent the roller 11 from being offset due to excessive reverse force when the push plate 36 pushes the frozen stones and debris, the outside of the round rod 352 is fixedly connected to the cam column 373, and the inside of the push plate 36 is slidably connected to the slat 374. A return spring 376 is provided between the slat 374 and the push plate 36. A convex tooth 375 is provided on one side of the slat 374. One end of the slat 374 passes through the push plate 36 and the cylindrical member 372 and contacts the cam column 373. When the push plate 36 is supported by the frozen stones and the resistance is too great, the spring pin 371 is pushed up. At this time, the rotation of the round rod 352 no longer drives the cylindrical member 372 and the push plate 36 to rotate. The rotation of the round rod 352 drives the cam column 373 to rotate, pushing the slat 374 to slide in the push plate 36. The slat 374 moves back and forth under the intermittent push of the cam column 373 and the reset of the reset spring 376, continuously driving the convex tooth 375 to rub on the frozen stone. The movement of the convex tooth 375 causes the stone to be subjected to vibration and torque, so that the contact edge of the stone and the ice produces concentrated stress, which makes it easier for the ice to break in a local area, thereby making it easier for the stone to separate from the ice.

[0026] Reference Fig. 9 and Fig.10 A telescopic unit 35 is arranged between the motor 32 and the push plate 36. The telescopic unit 35 includes an outer tube 351 fixed to the driving shaft of the motor 32. A round rod 352 is slidably connected inside the outer tube 351. A spring c353 is arranged between the round rod 352 and the outer tube 351. Through the expansion and contraction of the spring c353, the height of the cylindrical member 372 and the push plate 36 can change with the change of the terrain, thereby preventing the cylindrical member 372 from scratching against the bulge caused by the bulge of the ice surface in front.

[0027] Working principle: Place the roller 11 on the frozen ground or ice surface, manually hold the handle 10 and move it forward to drive the roller 11 to roll on the ice layer, detect the number of rotations of the roller 11 through the counter 12, and calculate the distance according to the circumference of the roller 11; The center disk 21 is fixed to the handle 10, and the roller 11 rolls to drive the connecting rod 22, the metal sheet 24, the mounting tube 271 and the rotating wheel 272 to make a circular motion. At this time, the rotating wheel 272 rolls on the inner side of the limiting plate 25, and the limiting plate 25 supports the rotating wheel 272, so that the spring a23 is compressed, and the metal sheet 24 and the connecting rod 22 shrink inside the roller 11 and will not pop out. When the mounting tube 271 moves to the notch position of the limiting plate 25, the rotating wheel 272 loses the support of the limiting plate 25, and the mounting tube 271, the connecting rod 22 and the metal sheet 24 move in a direction away from the center point of the roller 11 under the stretching elastic force of the spring a23, and the metal sheet 24 is popped out and embedded in the ice surface in front of the roller 11, increasing the The friction force applied to the large roller 11 during its rotation prevents the roller 11 from slipping. As the roller 11 rolls on the ground, the popped-out metal sheet 24 is pressed back into the roller 11. At this time, the metal sheet 24, the connecting rod 22 and the mounting tube 271 move toward the center of the roller 11. The rotating wheel 272 is squeezed into the mounting tube 271 by the inclined surface of the limiting plate 25. After the mounting tube 271 passes through the two limiting plates 25, the rotating wheel 272 extends out under the elastic force of the supporting spring 273. The limiting plate 25 supports the rotating wheel 272 again. Therefore, the rolling of the roller 11 can move the metal sheet 24 between popping out and retracting, so that the metal sheet 24 can be used cyclically as the roller 11 rolls. When the device is in use, the electromagnet 262 is energized to generate a magnetic attraction force that drives the magnetic block 263 to pull the arc plate 261, so that the two arc plates 261 move away from each other. At this time, the width between the two arc plates 261 is greater than the width of the two rotating wheels 272 when they are extended from the mounting tube 271. When the rotating wheel 272 rotates to the notch of the limiting plate 25, the arc plate 261 does not contact the rotating wheel 272 and cannot support the rotating wheel 272, so that the metal sheet 24 is ejected by the spring a23. After use, the electromagnet 262 is powered off, and the elastic force of the spring b264 pushes the arc plate 261 away from the inner wall of the center disk 21, so that the distance between the arc plates 261 on both sides of the inner wall of the center disk 21 is the same as the distance between the limiting plates 25. After the mounting tube 271 passes through the two arc plates 261, the arc plate 261 can support the rotating wheel 272, and the metal sheet 24 will not pop out when the roller 11 rotates. A notch is provided at the highest point of the limit plate 25. The metal sheet 24 rotated to the highest point pops out and contacts the bottom of the inclined side of the first scraper 281. At this time, the metal sheet 24 continues to rotate with the roller 11 and continues to extend outward. The edge of the metal sheet 24 moves upward from the bottom of the inclined surface of the first scraper 281, and rubs and scrapes against the first scraper 281 to remove the frozen ice layer on the edge of the metal sheet 24. The metal sheet 24 continues to rotate with the roller 11 and is pressed into the roller 11 by the inclined pressure plate 283, so that the metal sheet 24 is retracted. When there are debris on the distance measurement path, the starting motor 32 drives the impeller 33, the gear ring 34, the outer tube 351 and the round rod 352 to rotate. The round rod 352 rotates and drives the cylindrical member 372 and the push plate 36 to rotate through the spring pin 371, pushing the debris to the rolling path of the roller 11 to avoid the roller 11 from jumping when rolling. When there are stones that are frozen by the ice layer and are difficult to push, the push plate 36 is supported and no longer rotates. The rotation of the round rod 352 drives the cam column 373 to rotate, pushing the slat 374 to slide in the push plate 36. The slat 374 moves back and forth under the intermittent push of the cam column 373 and the reset of the reset spring 376, and continuously drives the convex teeth 375 to rub against the frozen stones. The movement of the convex teeth 375 causes the stones to be subjected to vibration and torque, so that concentrated stress is generated at the contact edge of the stone and the ice, making it easier to break the ice in a local area. The rotation of the impeller 33 creates negative pressure inside the housing 31, and outside air enters the roller 11 through the air inlet of the center disk 21, and is sucked out from the cavity connected between the roller 11 and the housing 31 and installed with the metal sheet 24, thereby clearing the cavity inside the roller 11. The rotation of the impeller 33 generates a downward airflow to blow out the ice chips attached to the push plate 36 and the ice chips generated when the metal sheet 24 is embedded in the ice surface, thereby preventing the roller 11 from being attached to the ice chips when rolling, resulting in a decrease in friction.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes to a distance measuring device suitable for multiple terrains and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A distance measuring device suitable for multiple terrains, comprising a handle (10), a roller (11) rotatably connected to the bottom of the handle (10), and a counter (12) installed at the bottom of the handle (10), characterized in that: Also includes: An anti-slip mechanism (20), the anti-slip mechanism (20) comprising a center disk (21) fixed to the bottom of the handle (10) and rotatably connected to the roller (11), a plurality of connecting rods (22) arranged in a circumferential array being slidably connected inside the roller (11), a spring a (23) being provided between the roller (11) and the connecting rod (22), a metal sheet (24) being fixedly connected to the outer end of the connecting rod (22), a limiting plate (25) being fixedly connected to the inner wall of the center disk (21), and a limiting component (26) for limiting the metal sheet (24) from popping out being provided inside the center disk (21); An obstacle removal mechanism (30) for removing debris from the distance measurement route; When the roller (11) rolls on the ground, each of the metal sheets (24) is ejected in sequence by the spring a (23) and embedded in the ice layer, thereby increasing the friction force applied to the roller (11) when rolling.

2. A distance measuring device suitable for multiple terrains according to claim 1, characterized in that: The limiting assembly (26) comprises an arc-shaped plate (261) slidably connected to the interior of the center disk (21); electromagnets (262) are fixedly connected to both sides of the center disk (21); a magnetic block (263) is fixedly connected to the interior of the arc-shaped plate (261); a spring b (264) is provided between the arc-shaped plate (261) and the center disk (21); the magnetic attraction force generated by the electromagnet (262) when energized drives the magnetic block (263) to pull the arc-shaped plate (261), so that the arc-shaped plate (261) opens the notch of the limiting plate (25).

3. A distance measuring device suitable for multiple terrains according to claim 2, characterized in that: A head unit (27) is provided at one end of the connecting rod (22), and the head unit (27) comprises a mounting tube (271) fixed to one end of the connecting rod (22), both ends of the mounting tube (271) are movably connected to rotating wheels (272), a supporting spring (273) is provided between the two rotating wheels (272), and one side of the limiting plate (25) is an inclined surface.

4. The distance measuring device suitable for multiple terrains according to claim 1, characterized in that: The bottom of the handle (10) is fixedly connected to a protective frame (29), a cleaning unit (28) is provided between the protective frame (29) and the roller (11), the cleaning unit (28) comprising a first scraper (281) and a gasket (282) fixed to the inner wall of the protective frame (29), a notch is provided at the highest point of the limiting plate (25), one side of the first scraper (281) is inclined and the inclined surface is in contact with the metal sheet (24).

5. A distance measuring device suitable for multiple terrains according to claim 4, characterized in that: The inner wall of the protection frame (29) is fixedly connected to an inclined pressure plate (283), and one side of the inclined pressure plate (283) is fixedly connected to a second scraper (284). When the metal sheet (24) rotates with the roller (11), it is pressed into the interior of the roller (11) by the inclined pressure plate (283), and during this process, the second scraper (284) scrapes over the end of the metal sheet (24).

6. The distance measuring device suitable for multiple terrains according to claim 1, characterized in that: The obstacle removal mechanism (30) comprises a housing (31) fixed to the bottom of the protection frame (29), a motor (32) is fixedly mounted inside the housing (31), and a push plate (36) is provided at the bottom of the motor (32).

7. A distance measuring device suitable for multiple terrains according to claim 6, characterized in that: A telescopic unit (35) is provided between the motor (32) and the push plate (36), the telescopic unit (35) comprising an outer tube (351) fixed to a drive shaft of the motor (32), a round rod (352) being slidably connected inside the outer tube (351), and a spring c (353) being provided between the round rod (352) and the outer tube (351).

8. The distance measuring device suitable for multiple terrains according to claim 6, characterized in that: Two impellers (33) are rotatably connected inside the housing (31), one of the impellers (33) is fixed to the drive shaft of the motor (32), and the outsides of the two impellers (33) are fixedly connected to gear rings (34), and the two gear rings (34) are meshed.

9. The distance measuring device suitable for multiple terrains according to claim 8, characterized in that: A collecting structure (38) is provided inside the outer shell (31), the collecting structure (38) comprising a collecting frame (381) detachably connected to the inside of the outer shell (31), a filter screen (382) being fixedly connected to the inner wall of the collecting frame (381), and an air inlet hole being provided on one side of the central disk (21).

10. The distance measuring device suitable for multiple terrains according to claim 7, characterized in that: A separation assembly (37) is provided at the bottom of the round rod (352), and the separation assembly (37) includes a cylindrical member (372) rotatably connected to the outside of the round rod (352) and fixed to the push plate (36); a spring pin (371) embedded in the top surface of the cylindrical member (372) is installed on the round rod (352); a cam column (373) is fixedly connected to the outside of the round rod (352); a slat (374) is slidably connected to the inside of the push plate (36); a return spring (376) is provided between the slat (374) and the push plate (36); a convex tooth (375) is provided on one side of the slat (374); one end of the slat (374) passes through the push plate (36) and the cylindrical member (372) and contacts the cam column (373).

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