CN110804984A - Pavement maintenance equipment - Google Patents
Pavement maintenance equipment Download PDFInfo
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- CN110804984A CN110804984A CN201911076911.1A CN201911076911A CN110804984A CN 110804984 A CN110804984 A CN 110804984A CN 201911076911 A CN201911076911 A CN 201911076911A CN 110804984 A CN110804984 A CN 110804984A
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- frame
- steering
- rod
- road shoulder
- pressure sensor
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H3/00—Applying liquids to roads or like surfaces, e.g. for dust control; Stationary flushing devices
- E01H3/02—Mobile apparatus, e.g. watering-vehicles
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The invention relates to pavement maintenance equipment, which relates to the technical field of pavement maintenance and comprises a frame, a driving device, a steering device and a sprinkling device, wherein the driving device, the steering device and the sprinkling device are arranged on the frame, the steering device comprises a sliding sleeve arranged on the frame, a contact rod arranged in the sliding sleeve in a sliding and penetrating way, an elastic part arranged in the sliding sleeve, a pressure sensor abutted against one end of the elastic part and a control assembly electrically connected with the pressure sensor, one end of the contact rod is abutted against the side wall of a road shoulder, the other end of the pressure sensor is abutted with the elastic piece, when the pressure value detected by the pressure sensor is larger than the high set value, a far away steering signal is sent out, when the pressure value detected by the pressure sensor is smaller than the low-level set value, a approaching steering signal is sent out, when the control assembly receives the departing steering signal, the frame is controlled to steer away from the road shoulder side, and when the control assembly receives the approaching steering signal, the frame is controlled to steer close to the road shoulder side. The invention has the effect of reducing the labor intensity of operators.
Description
Technical Field
The invention relates to the technical field of road maintenance, in particular to a pavement maintenance device.
Background
At present, the maintenance of the highway is the maintenance and the repair of the highway, and the maintenance is mainly focused on the whole process maintenance from the building of a communication vehicle, namely the regular maintenance and repair for ensuring the normal use of the road, the prevention and repair of the disastrous damage, and the reinforcement, the improvement or the addition for improving the use quality and the service level.
When the weather is hot, the road surface needs to be cooled frequently, so that the phenomenon of dry cracking of the concrete road surface is avoided, and meanwhile, dust raised from the road surface is reduced, and the air quality is prevented from deteriorating. The mode of watering commonly used mainly adopts artifical driving watering lorry to carry out watering work, and the route of control driver control vehicle to this spraying coverage rate that improves water promotes and cleans efficiency.
The above prior art solutions have the following drawbacks: the route of the sprinkler needs to be controlled manually, thus increasing the labor intensity of the driver.
Disclosure of Invention
The invention aims to provide pavement maintenance equipment which can reduce the labor intensity of operators.
The above object of the present invention is achieved by the following technical solutions:
a pavement maintenance device comprises a frame, a driving device, a steering device and a water spraying device, wherein the driving device, the steering device and the water spraying device are arranged on the frame, the driving device drives the frame to control the route of the frame when the frame travels, the steering device comprises a sliding sleeve arranged on the frame, a contact rod arranged in the sliding sleeve in a sliding and penetrating way, an elastic part arranged in the sliding sleeve, a pressure sensor abutted against one end of the elastic part and a control assembly electrically connected with the pressure sensor, one end of the contact rod is abutted against the side wall of a road shoulder, the other end of the contact rod is abutted against the elastic part, when a pressure value detected by the pressure sensor is greater than a high-level set value, a far-away steering signal is sent out, when the pressure value detected by the pressure sensor is less than a low-level set value, a near-away steering signal is sent out, when the control assembly receives the far-, when the pressure value detected by the pressure sensor is between the low set value and the high set value, the frame travels along a straight line.
By adopting the technical scheme, the watering device of the frame sprinkles water on the road surface, and the watering coverage width of the frame is kept fixed, so that the workload of manual operation of a driver is reduced; when the vehicle frame moves forwards and generates angle deviation due to external factors such as concave-convex road surface and the like, the water spraying coverage area of the water spraying device can be changed to influence the water spraying effect, when the vehicle frame is deviated to the road shoulder side, the reaction force of the road shoulder on the contact rod is increased, at the moment, the elastic part is compressed, the pressure of the elastic part on the pressure sensor is increased, when the pressure value detected by the pressure sensor is larger than a high-level set value, a far-away steering signal is sent out, when the control assembly receives the far-away steering signal, the vehicle frame is controlled to be steered to be far away from the road shoulder side, the moving route of the vehicle frame is corrected, the vehicle frame returns to a preset route to be sprayed with water, the workload of manual operation is reduced; and when the pressure value detected by the pressure sensor is smaller than the low-level set value, a near steering signal is sent out, when the control assembly receives the near steering signal, the frame is controlled to steer to be close to the road shoulder side, and when the pressure value detected by the pressure sensor is between the low-level set value and the high-level set value, the frame moves along a straight line, so that the frame and the road shoulder are kept within a normal distance range, the influence of frame vibration on the control assembly is reduced, and misoperation is reduced.
The invention is further configured to: the driving device comprises at least two wheels rotatably arranged at the rear end of the frame, a power part arranged on the frame and used for driving the wheels to rotate, a steering rod rotatably arranged at the front end of the frame and a steering wheel rotatably arranged on the steering rod, and the rotating axis of the steering wheel is perpendicular to that of the steering rod.
Through adopting above-mentioned technical scheme, support the frame through wheel and directive wheel, power spare drive wheel rotates in order to promote the frame and gos forward, drives the directive wheel when the steering column rotates and turns to this way of setting right the frame, thereby improves watering device's watering effect.
The invention is further configured to: the steering device further comprises a transmission rod hinged with the steering rod, a sliding block hinged with one end of the transmission rod and a driving piece arranged on the frame and used for driving the sliding block to move, the sliding block is connected with the frame in a sliding mode, and the sliding directions of the transmission rod, the steering rod and the sliding block form included angles.
Through adopting above-mentioned technical scheme, driving piece drive slider removes, and the slider promotes the transfer line transmission to this drives the steering column and rotates, with this rotation of driving directive wheel, with this route of dialling the frame, thereby improves watering device's watering effect.
The invention is further configured to: the driving piece is including setting up the cylinder on the frame, transfer line, slider and cylinder have two sets ofly and symmetric distribution in the both sides of frame, control assembly is connected with the cylinder electricity, and the piston rod that is located the frame and keeps away from the cylinder of curb side when control assembly receives and is close to turn signal extends and promotes the slider in order to drive the directive wheel and rotate towards the curb direction, and the piston rod that is located the frame and keeps away from the cylinder of curb side when control assembly receives and keeps away from turn signal extends and promotes the slider in order to drive the directive wheel and rotate towards keeping away from the curb direction.
Through adopting above-mentioned technical scheme, the cylinder pushes down the slider and removes in order to drive the transfer line transmission under control assembly's control, and the frame turns to the one side of keeping away from the curb when the cylinder that leans on the curb side extends, otherwise, the frame turns to the one side of being close to the curb when the cylinder that keeps away from the curb side extends to this drives the directive wheel and rotates, with this route of dialling the frame, thereby improves watering device's watering effect.
The invention is further configured to: and one end of the contact rod opposite to the road shoulder is rotatably provided with a roller, and the roller is in rolling connection with the side wall of the road shoulder.
Through adopting above-mentioned technical scheme, convert the plane friction of contact lever and curb lateral wall into rolling friction through the gyro wheel to this wearing and tearing that reduce the contact lever rigidity simultaneously and contact the vibration that the initiation and the error that produces.
The invention is further configured to: the front end of the frame is provided with a guide plate forming an included angle with the road shoulder, and the height of the contact rod is between the top height and the bottom height of the guide plate.
By adopting the technical scheme, the obstacles such as garbage on the pavement of the frame are guided by the guide plate, the obstacles are pushed away from the advancing route of the frame, and the height of the contact rod is between the top height and the bottom height of the guide plate, so that the obstacles are prevented from touching the contact rod to interfere with the normal operation of the steering device.
The invention is further configured to: the pressure sensor comprises a pressure sensitive resistor, a grounding resistor connected in series with the pressure sensitive resistor, a first divider resistor, a second divider resistor connected in series with the first divider resistor, a third divider resistor, a fourth divider resistor connected in series with the third divider resistor, a first voltage comparator and a second voltage comparator, wherein one ends of the pressure sensitive resistor, the first divider resistor and the third divider resistor are connected with a VCC end, one ends of the second divider resistor and the fourth divider resistor are grounded, a connection point of the pressure sensitive resistor and the grounding resistor is connected with a "-" end of the first voltage comparator and a "+" end of the second voltage comparator, a connection point of the first divider resistor and the second divider resistor is connected with a "+" end of the first voltage comparator, a connection point of the third divider resistor and the fourth divider resistor is connected with a "-" end of the second voltage comparator, when the first voltage comparator outputs high-level voltage, a near steering signal is output, the second voltage comparator outputs a high level voltage when outputting the far away steering signal.
By adopting the technical scheme, the first voltage dividing resistor and the second voltage dividing resistor form a voltage dividing circuit, the connection point of the first voltage dividing resistor and the second voltage dividing resistor outputs a voltage signal corresponding to a low-level set value, the third voltage dividing resistor and the fourth voltage dividing resistor form a voltage dividing circuit, the connection point of the third voltage dividing resistor and the fourth voltage dividing resistor outputs a voltage signal corresponding to a high-level set value, the pressure sensitive resistor and the grounding resistor form a voltage dividing circuit, the larger the pressure applied to the pressure sensitive resistor is, the smaller the resistance value is, when the vehicle frame is close to or far away from the side wall of the road shoulder, the resistance value of the pressure sensitive resistor is correspondingly reduced or increased, at the moment, the output voltage of the connection point of the pressure sensitive resistor and the grounding resistor is correspondingly increased or reduced, when the first voltage comparator outputs high level voltage, a close steering signal is output, and when the second voltage comparator outputs high level voltage, a far steering signal is output, so that the control assembly is controlled to adjust the steering of the frame, and the function of automatically calibrating the route is achieved.
The invention is further configured to: the control assembly comprises a first NPN triode and a second NPN triode, bases of the first NPN triode and the second NPN triode respectively receive a steering signal approaching to and a steering signal away from the steering signal, a collector of the first NPN triode is connected with a solenoid valve S1 coil of the cylinder away from the road shoulder side, an emitter of the first NPN triode is grounded, a collector of the second NPN triode is connected with a solenoid valve S2 coil of the cylinder close to the road shoulder side, an emitter of the second NPN triode is grounded, the other ends of the solenoid valve S1 coil and the solenoid valve S2 coil are both connected to a VCC end, and when the solenoid valve S1 or the solenoid valve S2 is powered on, the cylinder is controlled to.
By adopting the technical scheme, the approaching steering signal and the far steering signal are both high-level signals, the NPN triodes have the characteristic that the base electrodes input high levels to be conducted, when the first NPN triode receives the approaching steering signal, the first NPN triode is conducted and enables the electromagnetic valve S1 to be electrically conducted, at the moment, the cylinder far away from the road shoulder extends to enable the frame to turn to the direction close to the road shoulder side, and similarly, the cylinder near the road shoulder when the second NPN triode receives the far steering signal enables the frame to turn to the direction far away from the road shoulder side, so that the advancing route of the frame is automatically calibrated.
The invention is further configured to: the control assembly further comprises a reset rod vertically arranged on the steering rod and a reset spring arranged on the frame and used for righting the steering wheel to drive the frame to advance along a straight line, two ends of the reset spring are connected with the frame, and the middle of the reset spring is fixed with the reset rod.
By adopting the technical scheme, the two ends of the reset spring are connected with the frame, and the middle part of the reset spring is fixed with the reset rod, so that the control assembly does not receive a signal for approaching to and a signal for keeping away from a steering signal, namely the axial direction of the steering wheel is kept in a state vertical to the road shoulder when the frame is in a normal traveling route, the frame is prevented from steering and driving away from the normal route, and the running stability of the frame is improved.
The invention is further configured to: the frame is provided with a calibration block connected with one end of the return spring in a sliding mode along the length direction of the return spring, a bolt connected with the calibration block in a rotating mode is arranged on the frame in a penetrating mode through threads, and the rotating axis direction of the bolt is consistent with the sliding direction of the calibration block.
By adopting the technical scheme, when the return spring is used for a long time, the return spring is easy to deform, so that the steering wheels generate angular deviation when the cylinders on the two sides of the frame do not extend, and the frame deviates from linear motion; the position of the calibration block is adjusted by rotating the bolt, so that the reset spring is driven to stretch or shorten, the initial angle of the steering wheel is recalibrated, and the accuracy of the travelling route of the frame is improved.
In conclusion, the beneficial technical effects of the invention are as follows:
the water sprinkling device of the frame sprinkles water on the road surface, the water sprinkling coverage width of the water sprinkling device is kept fixed, when the frame deviates at an angle due to external factors such as concave-convex road surface and the like during advancing, and when the frame deviates to the side of a road shoulder, the contact rod is increased by the reaction force of the road shoulder, the elastic part is compressed at the moment, so that the pressure of the elastic part on the pressure sensor is increased, when the pressure value detected by the pressure sensor is greater than a high-level set value, a far-away steering signal is sent out, when the control assembly receives the far-away steering signal, the frame is controlled to steer to the side far away from the road shoulder, the advancing route of the frame is straightened, the frame returns to a preset route for sprinkling, the workload of manual operation is reduced;
the driving piece drives the sliding block to move, the sliding block pushes the transmission rod to transmit, so that the steering rod is driven to rotate, the steering wheel is driven to rotate, the route of the frame is straightened, and the sprinkling effect of the sprinkling device is improved;
the return spring enables the control assembly to keep the axial direction of the steering wheel in a state vertical to the road shoulder when the control assembly does not receive a approaching steering signal and a far steering signal, namely the frame is in a normal traveling route, so that the frame is prevented from steering and driving away from the normal route, and the running stability of the frame is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic view of a partially exploded structure of the present embodiment, mainly showing the resilient member;
FIG. 3 is an enlarged partial schematic view of portion A of FIG. 1;
fig. 4 is a schematic circuit diagram of the present embodiment.
Reference numerals: 1. a frame; 11. a guide plate; 2. a drive device; 21. a wheel; 22. a steering lever; 23. a steering wheel; 3. a steering device; 31. a sliding sleeve; 32. a contact lever; 33. a roller; 34. an elastic member; 35. a pressure sensor; 4. a control component; 41. a transmission rod; 42. a slider; 43. a drive member; 431. a cylinder; 44. a reset lever; 45. a return spring; 46. a calibration block; 47. a bolt; 5. a watering device; 51. a nozzle; 52. a transfer pump; 53. a water tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the pavement maintenance equipment disclosed by the invention comprises a frame 1, and further comprises a driving device 2, a steering device 3 and a water sprinkling device 5 which are arranged on the frame 1. The driving device 2 drives the frame 1 to move, and the steering device 3 controls the route of the frame 1. The sprinkler 5 includes a water tank 53 provided at the top of the frame 1, a nozzle 51 communicating with the water tank 53 through a pipe, and a transfer pump 52 communicating the nozzle 51 and the water tank 53. The water tank 53 and the transfer pump 52 are fixed with the frame 1 through screws, and a plurality of nozzles 51 are arranged, wherein one part of the nozzles 51 is vertically opposite to the road surface, and the other part of the nozzles 51 faces to the side far away from the road shoulder, so that the sprayed water covers the whole road surface, and the water spraying efficiency is improved.
The driving device 2 includes two wheels 21, a power member (not shown in the figure) disposed on the frame 1 for driving the wheels 21 to rotate, a steering rod 22 rotatably disposed at the front end of the frame 1, and a steering wheel 23 rotatably disposed on the steering rod 22. The wheels 21 are rotatably connected with the frame 1 through bearings, the rotating axis directions of the two wheels 21 are perpendicular to the direction of the frame 1 when the frame 1 travels along a straight line, the power part comprises a driving motor (not shown in the figure) fixed on the frame 1 through screws, and an output shaft of the driving motor is coaxially fixed with the wheels 21. The number of the steering wheels 23 is two, two ends of the steering rod 22 are respectively connected with the two steering wheels 23 through bearings in a rotating mode, the rotating axis of the steering wheel 23 is perpendicular to that of the steering rod 22, and when the steering rod 22 rotates, the steering wheel 23 is driven to steer.
Referring to fig. 2 and 3, the steering device 3 includes a transmission rod 41, a slider 42 slidably disposed on the frame 1, and a driving member 43 disposed on the frame 1 and driving the slider 42 to move, and the driving member 43 includes an air cylinder 431 disposed on the frame 1. Two transmission rods 41, two sliding blocks 42 and two air cylinders 431 are symmetrically distributed on two sides of the frame 1, one ends of the two transmission rods 41 are respectively hinged with two ends of the steering rod 22, and the other ends of the two transmission rods 41 are respectively hinged with the two sliding blocks 42. T-shaped grooves for sliding the sliding blocks 42 are symmetrically formed in two sides of the frame 1, a cylinder body of the air cylinder 431 is fixed to the frame 1 through screws, a piston rod of the air cylinder 431 is fixed to the sliding blocks 42 through screws, an included angle is formed between the sliding directions of the transmission rod 41, the steering rod 22 and the sliding blocks 42, and when the air cylinder 431 on one side of the frame 1 extends, the sliding blocks 42 slide along the T-shaped grooves to drive the steering rod 22 to rotate so as to drive the steering wheel 23 to steer.
The steering device 3 further includes a sliding sleeve 31 disposed on the frame 1, a contact rod 32 slidably disposed in the sliding sleeve 31, an elastic member 34 disposed in the sliding sleeve 31, a pressure sensor 35 abutting against one end of the elastic member 34, and a control unit 4 electrically connected to the pressure sensor 35. The contact rod 32 is provided with a roller 33 at one end opposite to the shoulder in a rotating way, the roller 33 is connected with the side wall of the shoulder in a rolling way, so that the plane friction between the contact rod 32 and the side wall of the shoulder is converted into rolling friction, the abrasion of the contact rod 32 is reduced, and errors caused by vibration caused by rigid contact of the contact rod 32 are reduced.
The sliding sleeve 31 is fixed with the frame 1 through screws, the sliding sleeve 31 is in a round tube shape, and one end of the contact rod 32 penetrating into the sliding sleeve 31 is abutted to the elastic part 34. The elastic member 34 is a spring, the elastic member 34 is located in the sliding sleeve 31, one end of the elastic member is abutted against the sensing surface of the pressure sensor 35, and when the frame 1 is close to the road shoulder, the elastic member 34 is compressed and abutted against the sensing surface of the pressure sensor 35. A far away steering signal is issued when the pressure value detected by the pressure sensor 35 is greater than the high set value, and a near steering signal is issued when the pressure value detected by the pressure sensor 35 is less than the low set value.
Referring to fig. 2 and 4, the pressure sensor 35 includes a pressure sensitive resistor RF, a ground resistor R5 connected in series with the pressure sensitive resistor RF, a first voltage dividing resistor R1, a second voltage dividing resistor R2 connected in series with the first voltage dividing resistor R1, a third voltage dividing resistor R3, a fourth voltage dividing resistor R4 connected in series with the third voltage dividing resistor R3, a first voltage comparator N1, and a second voltage comparator N2. One end of the pressure sensitive resistor RF, the first voltage dividing resistor R1 and one end of the third voltage dividing resistor R3 are connected with a VCC end, and one end of the second voltage dividing resistor R2 and one end of the fourth voltage dividing resistor R4 are grounded.
The junction of the pressure sensitive resistor RF and the ground resistor R5 is connected to the "-" terminal of the first voltage comparator N1 and the "+" terminal of the second voltage comparator N2. The connection point of the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 is connected with the "+" terminal of the first voltage comparator N1, and the connection point of the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4 is connected with the "-" terminal of the second voltage comparator N2. The first voltage dividing resistor R1 and the second voltage dividing resistor R2 form a voltage dividing circuit, and the connection point of the two outputs a voltage signal V1 corresponding to the low-level setting value, and the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 form a voltage dividing circuit, and the connection point of the two outputs a voltage signal V2 corresponding to the high-level setting value.
The pressure sensitive resistor RF has the characteristic of smaller resistance value when the pressure is larger, i.e. the voltage value of the connection with the ground resistor R5 is higher. When the frame 1 is far away from the road shoulder, the stress on the contact rod 32 is reduced, so that the pressure on the pressure sensitive resistor RF is reduced, the input voltage of the < - > end of the second voltage comparator N2 is reduced, and when the input voltage of the < - > end of the second voltage comparator N2 is lower than the plus end, a high-level signal, namely a steering signal is output. When the frame 1 approaches the shoulder, the contact rod 32 is pressed to compress the elastic member 34, and the pressure applied to the pressure sensitive resistor RF is increased, so that the input voltage at the + end of the second voltage comparator N2 is increased, and when the input voltage at the + end of the second voltage comparator N2 is higher than the input voltage at the-end, a high-level signal is output, i.e. a far-away steering signal is output.
Referring to fig. 2 and 3, the control assembly 4 is electrically connected to the cylinder 431, and when the control assembly 4 receives the approaching steering signal, the piston rod of the cylinder 431 located on the far-shoulder side of the frame 1 extends and pushes the slider 42 to drive the steering wheel 23 to rotate towards the shoulder direction. When the control component 4 receives the far-away steering signal, the piston rod of the cylinder 431 located on the road shoulder side of the frame 1 extends and pushes the slide block 42 to drive the steering wheel 23 to rotate in the direction away from the road shoulder.
Referring to fig. 3 and 4, the control assembly 4 includes a first NPN transistor Q1 and a second NPN transistor Q2, wherein bases of the first NPN transistor Q1 and the second NPN transistor Q2 respectively receive the approaching steering signal and the departing steering signal. The collector of the first NPN transistor Q1 is connected to the coil of the solenoid valve S1 of the cylinder 431 away from the shoulder, and the emitter thereof is grounded, the collector of the second NPN transistor Q2 is connected to the coil of the solenoid valve S2 of the cylinder 431 near the shoulder, and the emitter thereof is grounded, and the other ends of the coil of the solenoid valve S1 and the coil of the solenoid valve S2 are both connected to the VCC terminal. When the electromagnetic valve S1 or the electromagnetic valve S2 is powered, the corresponding cylinder 431 is controlled to extend, so as to push the slider 42 to move, thereby driving the transmission rod 41 to transmit and driving the steering rod 22 to rotate, thereby realizing the automatic steering of the steering wheel 23 (see fig. 2), and further realizing the automatic calibration of the traveling route of the frame 1.
When the first NPN transistor Q1 turns on and turns on the solenoid valve S1 when receiving the approach steering signal, the cylinder 431 away from the shoulder extends to steer the frame 1 toward the shoulder. Similarly, when the second NPN transistor Q2 receives the turn signal, the cylinder 431 near the shoulder turns the frame 1 away from the shoulder, so as to automatically calibrate the traveling path of the frame 1.
Referring to fig. 2 and 3, when the pressure value detected by the pressure sensor 35 is between the lower set value and the upper set value, the air cylinders 431 on both sides of the frame 1 are not actuated, and the frame 1 travels in a straight line. The control assembly 4 further comprises a return rod 44 vertically arranged on the steering rod 22 and a return spring 45 arranged on the frame 1 for aligning the steering wheel 23 to drive the frame 1 to travel along a straight line. The reset rod 44 is coaxially fixed with the steering rod 22, the length direction of the reset rod 44 is consistent with the sliding direction of the sliding block 42 when the frame 1 keeps straight running, and the reset springs 45 are horizontally distributed and are vertical to the sliding direction of the sliding block 42.
One end of the return spring 45 is welded and fixed with the frame 1, the middle part of the return spring is fixed with the return rod 44 through a screw, the other end of the return spring is welded and fixed with the calibration block 46, and the calibration block 46 is connected with the frame 1 in a sliding mode along the length direction of the return spring 45. A bolt 47 rotatably connected with the calibration block 46 is arranged on the frame 1 in a threaded mode, the bolt 47 and the calibration block 46 are axially fixed, and the rotating axis direction of the bolt 47 is consistent with the sliding direction of the calibration block 46. The return spring 45 enables the control component 4 to keep the axial direction of the steering wheel 23 in a state of being vertical to the road shoulder when the approaching steering signal and the departing steering signal are not received, namely the frame 1 is in a normal traveling route, so that the frame 1 is prevented from steering and driving away from the normal route, and the running stability of the frame 1 is improved.
When the return spring 45 is used for a long time, the return spring is easy to deform, so that the steering wheel 23 generates angular deviation when the cylinders 431 on the two sides of the frame 1 are not extended, and the frame 1 deviates from the linear motion. The operator can adjust the position of the calibration block 46 by rotating the bolt 47, so as to drive the return spring 45 to extend or shorten, thereby changing the position of the connection point of the elastic member 34 and the return rod 44, so as to recalibrate the initial angle of the steering wheel 23, and thus improve the accuracy of the traveling route of the frame 1.
Referring to fig. 1, a guide plate 11 forming an included angle with a road shoulder is arranged at the front end of a vehicle frame 1, and the guide plate 11 forms an included angle with the vehicle frame 1 along a straight advancing direction, so that obstacles such as garbage on a road surface are guided by the guide plate 11, and the obstacles are pushed away from an advancing path of the vehicle frame 1. And the height of the contact rod 32 is between the top height and the bottom height of the guide plate 11, so as to prevent obstacles from touching the contact rod 32 and interfering with the normal operation of the steering device 3.
The implementation principle of the embodiment is as follows: the driving motor drives the wheels 21 to drive the frame 1 to move forward, and the spraying nozzle 51 of the frame 1 sprays water on the road surface and the spraying coverage width of the spraying nozzle is kept fixed, so that the workload of manual operation of a driver is reduced.
The rollers 33 always abut against the side wall of the road shoulder, and the frame 1 is prone to angular deviation caused by external factors such as uneven road surface and the like during traveling. When the frame 1 is deviated to the road shoulder side, the reaction force of the road shoulder on the contact rod 32 is increased, at the same time, the elastic member 34 is compressed, so that the pressure of the elastic member 34 on the pressure sensor 35 is increased, and when the pressure value detected by the pressure sensor 35 is greater than the high set value, a far steering signal is sent. When the control component 4 receives the far steering signal, the cylinder 431 close to the road shoulder side is controlled to extend, so that the vehicle frame 1 is steered to the far road shoulder side, the traveling route of the vehicle frame 1 is aligned, and the vehicle frame 1 returns to the preset route for sprinkling.
And sends a approaching steering signal when the pressure value detected by the pressure sensor 35 is less than the low set value, and controls the cylinder 431 away from the road shoulder side to extend when the control assembly 4 receives the approaching steering signal, so as to steer the frame 1 to the near road shoulder side. When the pressure value detected by the pressure sensor 35 is between the low set value and the high set value, the reset rod 44 is used for correcting the frame 1 under the action of the reset spring 45, so that the frame 1 moves along a straight line, the frame 1 and a road shoulder are kept within a normal distance range, the influence of the vibration of the frame 1 on the control assembly 4 is reduced, the workload of manual operation is reduced, and the labor intensity of operators is reduced.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A road surface maintenance equipment which characterized in that: comprises a frame (1), and further comprises a driving device (2) arranged on the frame (1), a steering device (3) and a watering device (5), wherein the steering device (3) controls the route of the frame (1) when the driving device (2) drives the frame (1) to advance, the steering device (3) comprises a sliding sleeve (31) arranged on the frame (1), a contact rod (32) slidably arranged in the sliding sleeve (31), an elastic member (34) arranged in the sliding sleeve (31), a pressure sensor (35) abutted against one end of the elastic member (34) and a control component (4) electrically connected with the pressure sensor (35), one end of the contact rod (32) is abutted against the side wall of a road shoulder, the other end of the contact rod is abutted against the elastic member (34), when a pressure value detected by the pressure sensor (35) is greater than a high-position set value, a far-away steering signal is sent out, when the pressure value detected by the pressure sensor (35) is less than a low-position set value, a, when the control component (4) receives a far steering signal, the vehicle frame (1) is controlled to steer to a far shoulder side, when the control component (4) receives a near steering signal, the vehicle frame (1) is controlled to steer to a near shoulder side, and when a pressure value detected by the pressure sensor (35) is between a low set value and a high set value, the vehicle frame (1) travels along a straight line.
2. A pavement maintenance apparatus according to claim 1, characterized in that: the driving device (2) comprises at least two wheels (21) rotatably arranged at the rear end of the frame (1), a power part arranged on the frame (1) and used for driving the wheels (21) to rotate, a steering rod (22) rotatably arranged at the front end of the frame (1) and a steering wheel (23) rotatably arranged on the steering rod (22), and the rotating axis of the steering wheel (23) is perpendicular to that of the steering rod (22).
3. A pavement maintenance apparatus according to claim 2, characterized in that: the steering device (3) further comprises a transmission rod (41) hinged with the steering rod (22), a sliding block (42) hinged with one end of the transmission rod (41) and a driving piece (43) arranged on the frame (1) and used for driving the sliding block (42) to move, the sliding block (42) is connected with the frame (1) in a sliding mode, and the sliding directions of the transmission rod (41), the steering rod (22) and the sliding block (42) form included angles.
4. A pavement maintenance apparatus according to claim 3, characterized in that: the driving part (43) comprises air cylinders (431) arranged on the frame (1), two groups of transmission rods (41), sliders (42) and the air cylinders (431) are symmetrically distributed on two sides of the frame (1), the control assembly (4) is electrically connected with the air cylinders (431), when the control assembly (4) receives a turning signal, a piston rod of the air cylinder (431) far away from the road shoulder side of the frame (1) extends and pushes the sliders (42) to drive the turning wheels (23) to rotate towards the road shoulder direction, and when the control assembly (4) receives a turning signal far away, a piston rod of the air cylinder (431) near the road shoulder side of the frame (1) extends and pushes the sliders (42) to drive the turning wheels (23) to rotate towards the direction far away from the road shoulder.
5. A pavement maintenance apparatus according to claim 1, characterized in that: the pressure sensor (35) comprises a pressure sensitive resistor, a grounding resistor connected with the pressure sensitive resistor in series, a first divider resistor, a second divider resistor connected with the first divider resistor in series, a third divider resistor, a fourth divider resistor connected with the third divider resistor in series, a first voltage comparator and a second voltage comparator, wherein one end of the pressure sensitive resistor, one end of the first divider resistor and one end of the third divider resistor are connected with a VCC end, one end of the second divider resistor and one end of the fourth divider resistor are grounded, the connection point of the pressure sensitive resistor and the grounding resistor is connected with the "-" end of the first voltage comparator and the "+" end of the second voltage comparator, the connection point of the first divider resistor and the second divider resistor is connected with the "+" end of the first voltage comparator, the connection point of the third divider resistor and the fourth divider resistor is connected with the "-" end of the second voltage comparator, when the first voltage comparator outputs high-level voltage, a near steering signal is output, the second voltage comparator outputs a high level voltage when outputting the far away steering signal.
6. A pavement maintenance device according to claim 5, characterized in that: the control assembly (4) comprises a first NPN type triode and a second NPN type triode, bases of the first NPN type triode and the second NPN type triode respectively receive a near steering signal and a far steering signal, a collector of the first NPN type triode is connected with a solenoid valve S1 coil of the cylinder (431) far away from the road shoulder, an emitter of the first NPN type triode is grounded, a collector of the second NPN type triode is connected with a solenoid valve S2 coil of the cylinder (431) near the road shoulder, an emitter of the second NPN type triode is grounded, the other ends of the solenoid valve S1 coil and the solenoid valve S2 coil are both connected to a VCC end, and when the solenoid valve S1 or the solenoid valve S2 is powered on, the cylinder (431) is controlled.
7. A pavement maintenance apparatus according to claim 2, characterized in that: the control assembly (4) further comprises a reset rod (44) vertically arranged on the steering rod (22) and a reset spring (45) arranged on the frame (1) and used for righting the steering wheel (23) to drive the frame (1) to move along a straight line, two ends of the reset spring (45) are connected with the frame (1), and the middle part of the reset spring is fixed with the reset rod (44).
8. A pavement maintenance apparatus according to claim 7, characterized in that: the frame (1) is gone up and is slided along reset spring (45) length direction and is provided with calibration piece (46) of being connected with reset spring (45) one end, frame (1) is gone up the screw thread and is worn to be equipped with and rotates bolt (47) of being connected with calibration piece (46), the axis of rotation direction of bolt (47) is unanimous with the direction of sliding of calibration piece (46).
9. A pavement maintenance apparatus according to claim 1, characterized in that: the contact rod (32) is provided with a roller (33) in a rotating mode with one end opposite to the road shoulder, and the roller (33) is in rolling connection with the side wall of the road shoulder.
10. A pavement maintenance apparatus according to claim 1, characterized in that: the front end of the frame (1) is provided with a guide plate (11) forming an included angle with a road shoulder, and the height of the contact rod (32) is between the top height and the bottom height of the guide plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911076911.1A CN110804984A (en) | 2019-11-06 | 2019-11-06 | Pavement maintenance equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911076911.1A CN110804984A (en) | 2019-11-06 | 2019-11-06 | Pavement maintenance equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110804984A true CN110804984A (en) | 2020-02-18 |
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ID=69501538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911076911.1A Pending CN110804984A (en) | 2019-11-06 | 2019-11-06 | Pavement maintenance equipment |
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| Country | Link |
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| CN (1) | CN110804984A (en) |
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Application publication date: 20200218 |