CN217845258U - Speed measuring and distance measuring device of road roller - Google Patents
Speed measuring and distance measuring device of road roller Download PDFInfo
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- CN217845258U CN217845258U CN202221827075.3U CN202221827075U CN217845258U CN 217845258 U CN217845258 U CN 217845258U CN 202221827075 U CN202221827075 U CN 202221827075U CN 217845258 U CN217845258 U CN 217845258U
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Abstract
The utility model relates to a speed measuring and range unit of road roller, the device includes: the device comprises a Hall sensor, magnetic steel and a monitoring device; the magnetic steel is arranged at one end of a road roller steel wheel of the road roller, and the Hall sensor is arranged on a steel wheel bracket at one end of the road roller steel wheel provided with the magnetic steel; the Hall sensor is connected with the monitoring device and used for outputting a Hall signal; and the monitoring device is used for acquiring the rolling speed and the rolling distance of the road roller according to the Hall signal. The utility model discloses realize the road roller based on hall sensor roll speed and roll the measurement of distance, need not to establish reference station mobile station and server, for loading GPS positioning system, the cost is reduced to easy operation need not operating personnel's training.
Description
Technical Field
The utility model relates to an engineering construction technical field especially relates to a speed measuring and range unit of road roller.
Background
In the design of road structure layer combination, the base layer is paid much attention as the main bearing layer, through relevant data statistics, a large number of cracks appear in a short period of time after a large number of road surfaces are built, the reasons are complex and various, but through analysis of a large number of damaged road surfaces, the cracks are generated at first in the base layer and then reflected to the surface layer, and the cracks are in an inseparable relationship. Therefore, in road construction, the quality of a base layer determines the overall quality of a road to a great extent, while the water-stabilized macadam base layer is often adopted in pavement base layer construction in China, and has the advantages of high strength, large bearing capacity and the like, and the problems of insufficient crack resistance, insufficient scour resistance, poor surface layer cohesiveness and the like, most of the problems are related to compactness, and the compactness is realized through compaction, so the quality of the compactness is called as a main reason for directly influencing the road performance of the cement-stabilized macadam.
At present, the relevant technical personnel who roll the basic unit are rolling the during operation, mostly rely on the experience, and the randomness is great, and the road roller is when the back is moved back or is gone forward the driver can not each the accurate control each critical point that rolls the interval, leads to two to roll interval junction and appear excessive pressure or under-voltage phenomenon, and the under-voltage can lead to road surface fracture, water damage scheduling problem, and excessive pressure then can lead to the road surface mineral aggregate to be crushed, further appears general oil and unstability phenomenon.
In the rolling work of the road base, the rolling speed has great influence on the rolling quality, the rolling speed is high, the compaction quality is reduced to a certain extent although the operation efficiency is high, and the phenomenon of transition occurs; the rolling speed is low, the compaction degree can be increased, but the production efficiency is reduced, and the cost is increased. If the rolling speed is high or low, the rolling is not uniform, and the quality of the road pavement base is seriously influenced.
The existing solution is to load a GPS positioning system on a road roller, so that the positioning problem can be solved, but a reference station mobile station and a server need to be established, the cost is high, and the road roller operator needs system training and a background needs manual operation, so that a large amount of manpower, material resources and financial resources are invested.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a speed and range unit of road roller to a speed and range unit with low costs and easy operation is provided.
In order to achieve the above object, the utility model provides a following scheme:
a speed and distance measuring apparatus for a road roller, the apparatus comprising: the device comprises a Hall sensor, magnetic steel and a monitoring device;
the magnetic steel is arranged at one end of a road roller steel wheel of the road roller, and the Hall sensor is arranged on a steel wheel bracket at one end of the road roller steel wheel provided with the magnetic steel;
the Hall sensor is connected with the monitoring device and used for outputting Hall signals, the Hall signals are used for representing whether the magnetic steel passes through the Hall sensor, and when the magnetic steel passes through the Hall sensor, the Hall signals are low level; when the magnetic steel does not pass through the Hall sensor, the Hall signal is at a high level;
and the monitoring device is used for acquiring the rolling speed and the rolling distance of the road roller according to the Hall signal.
Optionally, the monitoring device includes a counter, a timer and a calculator;
the Hall sensor is connected with the counter, and the counter is used for counting the times of the Hall signal being at a low level;
the Hall sensor is connected with the timer, and the timer is used for acquiring the time interval of two adjacent Hall signals with low level;
the counter and the timer are both connected with the calculator;
and the calculator is used for calculating the rolling speed and the rolling distance of the road roller according to the times of the Hall signals with low level and the time interval of two adjacent Hall signals with low level.
Optionally, the calculator includes a divider, a subtractor and a multiplier;
the divider is connected with the timer and used for calculating the quotient of the perimeter of the road roller steel wheel and the time interval of two adjacent low-level Hall signals as the rolling speed of the road roller;
the subtracter is connected with the counter and used for calculating the correction times obtained by subtracting the correction value from the times of the Hall signal being at the low level;
and the multiplier is connected with the subtracter and used for calculating the product of the perimeter of the road roller steel wheel and the correction times as the rolling distance of the road roller.
Optionally, the monitoring device further includes a display driving circuit and a liquid crystal display;
the display driving circuit is connected with the calculator and the liquid crystal display;
the display driving circuit is used for driving the liquid crystal display to display the rolling speed and the rolling distance.
Optionally, the monitoring device is arranged in a cab of the road roller, and the monitoring device is connected with the hall sensor through a signal transmission line.
Optionally, the monitoring device further comprises a housing, the hall sensor is arranged in the housing, and the housing is arranged on a steel wheel support at one end of the road rolling steel wheel provided with the magnetic steel.
Optionally, the front panel of the housing passes through a pull ring switch arranged on the front panel; the front panel is a plate back to the vehicle body direction of the road roller.
Optionally, a through hole is formed in the side panel of the housing, an elastic ring is arranged in the through hole, the signal transmission line is led out through the elastic ring, and the signal transmission line and the elastic ring are in interference fit; the side panels are plates connected with the front panel.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model discloses a speed measuring and range unit of road roller, the device includes: the device comprises a Hall sensor, magnetic steel and a monitoring device; the magnetic steel is arranged at one end of a road roller steel wheel of the road roller, and the Hall sensor is arranged on a steel wheel bracket at one end of the road roller steel wheel provided with the magnetic steel; the Hall sensor is connected with the monitoring device and used for outputting a Hall signal; and the monitoring device is used for acquiring the rolling speed and the rolling distance of the road roller according to the Hall signal. The utility model discloses realize the road roller based on hall sensor roll speed and roll the measurement of distance, need not to establish reference station mobile station and server, for loading GPS positioning system, the cost is reduced to easy operation need not operating personnel's training.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a speed and distance measuring device of a road roller according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a housing according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a connection relationship of the hall sensor provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a monitoring device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a calculator according to an embodiment of the present invention;
reference numerals are as follows:
1. a Hall sensor; 2. magnetic steel; 3. a monitoring device; 4. a housing; 5. a pull ring; 6. a through hole; 31. a counter; 32. a timer; 33. a calculator; 331. a divider; 332. a subtractor; 333. a multiplier; 34. a display driving circuit; 35. a liquid crystal display.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The utility model aims at providing a speed and range unit that test of road roller to a speed and range unit with low costs and easy operation is provided.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the embodiment of the utility model provides a speed and range unit of road roller, the device includes: hall sensor 1, magnet steel 2 and monitoring devices 3.
The magnetic steel 2 is arranged at any end of a road roller steel wheel of the road roller, and the Hall sensor 1 is arranged on a steel wheel bracket at one end of the road roller steel wheel provided with the magnetic steel 2; the magnetic steel 2 is mainly used for providing an induction magnetic field for the Hall sensor 1, and the magnetic steel 2 is not directly connected with other components.
For example, the magnetic steel 2 is separately installed at the left end of the road roller steel wheel of the road roller, and in order to prevent the magnetic steel 2 from falling off during the running work of the road roller steel wheel, the magnetic steel 2 is bonded to the road roller steel wheel of the front left wheel of the road roller by using a strong glue.
Exemplarily, with hall sensor 1 through the bolt fastening in the left side steel wheel support top of arbitrary wheel, for avoiding hall sensor 1 to receive rainwater or other natural conditions and damage, set up casing 4 and protect, as shown in fig. 2, the front panel adopts the design of two divisions of doors, this two divisions of doors pass through pull ring 5 switches, make things convenient for hall sensor 1's loading and unloading, the side panel is provided with and is provided with the elastic ring in the through-hole 6, signal transmission line passes, this elastic ring is automatic closed in order to prevent rainy day rain phenomenon of leaking.
The Hall sensor 1 is connected with the monitoring device 3, the Hall sensor 1 is used for outputting Hall signals, the Hall signals are used for representing whether the magnetic steel 2 passes through the Hall sensor 1, and when the magnetic steel 2 passes through the Hall sensor 1, the Hall signals are at low level; when the magnetic steel 2 does not pass through the Hall sensor 1, the Hall signal is at a high level. The circuit connection of the exemplary hall sensor 1 is shown in fig. 3. The leftmost pin is a Vcc power supply pin, the middle pin is a GND pin, the rightmost pin is a Hall signal output pin, the resistor in FIG. 3 is a pull-up resistor, and a 10K resistor is selected to be used.
And the monitoring device 3 is used for acquiring the rolling speed and the rolling distance of the road roller according to the Hall signal.
As shown in fig. 4, the monitoring device 3 includes a counter 31, a timer 32, and a calculator 33; the hall sensor 1 is connected with the counter 31, and the counter 31 is used for counting the number of times that the hall signal is at a low level; the hall sensor 1 is connected with the timer 32, and the timer 32 is used for acquiring the time interval between two adjacent hall signals with low level; the counter 31 and the timer 32 are both connected with the calculator 33; and the calculator 33 is used for calculating the rolling speed and the rolling distance of the road roller according to the times of the Hall signals with low levels and the time interval of two adjacent Hall signals with low levels.
As shown in fig. 5, the calculator 33 includes a divider 331, a subtractor 332, and a multiplier 333; the divider 331 is connected with the timer 32, and the divider 331 is used for calculating a quotient of the circumference of the road roller wheel and a time interval of two adjacent low-level hall signals as a rolling speed of the road roller; the subtractor 332 is connected to the counter 31, and the subtractor 332 is configured to calculate a correction number obtained by subtracting a correction value from a number of times that the hall signal is at a low level; the multiplier 333 is connected to the subtractor 332, and the multiplier 333 is used for calculating the product of the circumference of the road roller steel wheel and the correction times as the rolling distance of the road roller. Illustratively, the correction value is 0.5.
As shown in fig. 4, the monitoring device 3 further includes a display driving circuit 34 and a liquid crystal display 35; the display driving circuit 34 is connected with the calculator 33, and the display driving circuit 34 is connected with the liquid crystal display 35; the display driving circuit 34 is configured to drive the liquid crystal display 35 to display the rolling speed and the rolling distance.
Illustratively, the counter 31, the timer 32, the calculator 33, and the display driving circuit 34 are integrated on a circuit board, and the circuit board and the liquid crystal display 35 are fixed together by screws. The whole monitoring device 3 is powered by a self-contained power supply system of the road roller, and the monitoring device 3 is integrally adhered to the left of a steering wheel of the road roller, so that a driver can conveniently watch the monitoring device.
As an optional implementation manner, the monitoring device 3 includes a single chip microcomputer and a liquid crystal display 35, and the functions of the counter 31, the timer 32, the calculator 33, and the display driving circuit 34 are all implemented by a program written inside the single chip microcomputer.
Hall signal that Hall sensor 1 gathered passes through signal transmission line transmission to singlechip, on data line conveying liquid crystal display 35 in the driver's cabin through procedure processing, signal transmission line is owing to expose in the air of no protection, so select the waterproof sun-proof transmission line of high performance, and the distance that rolls and the speed of rolling of real-time transmission road roller on the liquid crystal display 35, road roller driver accessible this data pertinence makes the adjustment, guarantees the quality of rolling of engineering.
The working principle of the device of the utility model is that:
when the road roller wheel of the road roller rotates for one circle, when the magnetic steel 2 moves to a position near the Hall sensor 1, the Hall sensor 1 is at a low level, and when the magnetic steel 2 is far away from the Hall sensor 1, the Hall sensor 1 outputs a high level. Namely, the Hall sensor 1 outputs a low level once when the road roller steel wheel of the road roller rotates one circle. Get the girth of road roller before the installation, combine the time interval of two times output low level (the utility model discloses a time-recorder 32 realizes time interval's acquirement, but then partial hall sensor 1 automatic calculation time interval, need not time-recorder 32 this moment, only need be connected to hall sensor 1's time interval output to calculator 33), can solve the speed of going of road roller this moment, and the girth to the number of times of the low level of the distance of going accessible output of road roller and road roller calculates and obtains.
Through the principle, the rolling speed and the rolling distance of the road roller are transmitted to the liquid crystal display 35 through the data line in real time, so that a driver of the road roller can visually see the rolling speed and the rolling distance of the road roller at the moment, and can make adjustment in real time.
The utility model discloses operation flow as follows:
when rolling work will begin, the switch of the device of the utility model is switched on, and the device is reset to zero, namely, the timer 32 and the counter 31 are reset to zero.
In the rolling process, the liquid crystal display 35 in the cab displays the rolling distance and the rolling speed, and records the maximum distance of forward driving; when the roller moves backwards, the liquid crystal display 35 will display the remaining distance that can move backwards (the distance that the roller rolls forwards and backwards is recorded once, i.e. the distance that the roller rolls forwards needs to be consistent with the distance that the roller rolls backwards), i.e. the moving distance can be controlled to be consistent with the distance that the roller moves forwards, and when the rolling speed of the roller exceeds a predetermined interval or the rolling distance reaches a predetermined value, the sensor alarm device will be automatically started. The distance between the forward rolling and the backward rolling can be ensured to be consistent, and no pressure leakage or excessive pressure is ensured.
When the road roller changes the rolling direction, the running speed and the running distance of the liquid crystal display 35 are simultaneously reset to zero, so that the burden of a road roller driver caused by manual reset every time the rolling direction is turned is avoided.
After the rolling operation is finished, the utility model is closed.
Based on the above-mentioned embodiment, the utility model has the advantages as follows:
(1) The rolling distance of the road roller can be accurately determined by adopting the speed measuring and distance measuring device of the road roller. Because the road surface basic unit is rolling the work in, roll and go on between the subregion, roll the site conditions complicacy, the driver often will control according to the experience of oneself and roll the distance, and the randomness is great, rolls mark section juncture and can appear losing pressure or excessive pressure phenomenon at two usually, nevertheless through this equipment, can accurately judge the distance that the road roller has rolled this moment, has avoided the great hourglass of randomness and excessive pressure phenomenon, rolls the operating mass with great significance to the promotion.
(2) The rolling speed of the road roller at the moment can be accurately tested by adopting the speed measuring and distance measuring device of the road roller. Before the field rolling operation, the requirement on the rolling speed can be provided, but a driver needs to control the direction and watch the road condition before and after the field operation, the field rolling operation environment is noisy, the running speed displayed by a road roller instrument panel is not visual and clear enough, a road roller driver generally controls the rolling speed by the experience of the driver, the randomness is high, and the condition that the rolling speed is high or low can occur in the rolling operation process. Through the device, the speed of the road roller during rolling is visually and clearly referred to a driver, the phenomenon of overvoltage and undervoltage caused by great randomness is avoided, and the device has great significance for improving the rolling working quality.
(3) The speed measuring and distance measuring device of the road roller is adopted to save a large amount of cost while improving the rolling engineering quality. In the prior art, the GPS is adopted to position the road roller to control the rolling speed and the rolling distance, although the method is effective, a reference station, a mobile station and a server need to be established, a background worker needs to monitor in real time, and problems are fed back to a driver of the road roller. This equipment only needs simple device combination to form, practices thrift the financial resources, and in rolling the course of the work, the driver can remind control to roll distance and speed according to this device.
The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The principle and the implementation of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for those skilled in the art, the idea of the present invention may be changed in the specific embodiments and the application range. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. A speed and distance measuring device for a road roller, the device comprising: the device comprises a Hall sensor, magnetic steel and a monitoring device;
the magnetic steel is arranged at one end of a road roller steel wheel of the road roller, and the Hall sensor is arranged on a steel wheel bracket at one end of the road roller steel wheel provided with the magnetic steel;
the Hall sensor is connected with the monitoring device and used for outputting a Hall signal, the Hall signal is used for representing whether the magnetic steel passes through the Hall sensor, and when the magnetic steel passes through the Hall sensor, the Hall signal is at a low level; when the magnetic steel does not pass through the Hall sensor, the Hall signal is at a high level;
and the monitoring device is used for acquiring the rolling speed and the rolling distance of the road roller according to the Hall signal.
2. A speed and distance measuring device for a road roller as claimed in claim 1, wherein the monitoring device comprises a counter, a timer and a calculator;
the Hall sensor is connected with the counter, and the counter is used for counting the times of the Hall signal being in a low level;
the Hall sensor is connected with the timer, and the timer is used for acquiring the time interval of two adjacent Hall signals with low level;
the counter and the timer are both connected with the calculator;
and the calculator is used for calculating the rolling speed and the rolling distance of the road roller according to the times of the Hall signals with low level and the time interval of two adjacent Hall signals with low level.
3. A speed and distance measuring device for a road roller as claimed in claim 2, wherein said calculator comprises a divider, a subtractor and a multiplier;
the divider is connected with the timer and used for calculating the quotient of the perimeter of the road roller steel wheel and the time interval of two adjacent low-level Hall signals as the rolling speed of the road roller;
the subtracter is connected with the counter and used for calculating the correction times obtained by subtracting the correction value from the times of the Hall signal being at the low level;
and the multiplier is connected with the subtracter and is used for calculating the product of the perimeter of the road roller steel wheel and the correction times as the rolling distance of the road roller.
4. The device for measuring the speed and the distance of the road roller according to claim 2, characterized in that said monitoring device further comprises a display driving circuit and a liquid crystal display;
the display driving circuit is connected with the calculator and the liquid crystal display;
the display driving circuit is used for driving the liquid crystal display to display the rolling speed and the rolling distance.
5. The device for measuring speed and distance of a road roller according to claim 1, wherein said monitoring device is arranged in the cab of the road roller, said monitoring device being connected to said hall sensor by a signal transmission line.
6. A speed and distance measuring device for a road roller as claimed in claim 5, wherein the monitoring device further comprises a housing, the Hall sensor is disposed in the housing, and the housing is disposed on a steel wheel support at one end of the road roller on which the magnetic steel is mounted.
7. The device for measuring speed and distance of road roller according to claim 6, wherein the front panel of said housing passes through a pull ring switch provided on said front panel; the front panel is a plate which is back to the direction of the vehicle body of the road roller.
8. The speed and distance measuring device of the road roller as claimed in claim 7, wherein a through hole is formed on the side panel of the housing, an elastic ring is arranged in the through hole, the signal transmission line is led out through the elastic ring, and the signal transmission line and the elastic ring are in interference fit; the side panels are plates connected with the front panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221827075.3U CN217845258U (en) | 2022-07-15 | 2022-07-15 | Speed measuring and distance measuring device of road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221827075.3U CN217845258U (en) | 2022-07-15 | 2022-07-15 | Speed measuring and distance measuring device of road roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217845258U true CN217845258U (en) | 2022-11-18 |
Family
ID=84036932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221827075.3U Active CN217845258U (en) | 2022-07-15 | 2022-07-15 | Speed measuring and distance measuring device of road roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217845258U (en) |
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2022
- 2022-07-15 CN CN202221827075.3U patent/CN217845258U/en active Active
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