Roadbed flatness detection equipment
By designing a roadbed flatness detection device including an isometric mechanism and a detection mechanism, the problem of cumbersome detection in the prior art and inability to meet the requirements of the regulations is solved, automated detection is realized, and the accuracy of the detection results is ensured.
Patent Information
- Application Number
- CN202422162344.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The existing roadbed flatness detection device adopts manual marking or visual inspection methods, which is cumbersome and cannot meet the requirements of the detection procedures.
A roadbed flatness detection equipment is designed, including a testing frame, an isometric mechanism and a testing mechanism. The equidistant mechanism ensures that the detection equipment always maintains a specified distance from the inner wall of the pavement edge during the inspection process. The detection mechanism includes a detection frame, a detection link, a detection wheel, a ruler, a contact switch and an alarm, which can automatically detect the smoothness of the roadbed.
The equipment can automatically keep the detection mechanism equidistant from the pavement edge stone to ensure the accuracy of the detection results and avoid the cumbersome and errors of manual inspection.
Smart Images
Figure CN222990541U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pavement evenness measurement, in particular to a subgrade flatness detection device. Background Technique
[0002] The evenness of subgrade and pavement refers to the deviation value of the longitudinal unevenness of the road surface. The evenness of subgrade and pavement is an important index in pavement evaluation and pavement construction acceptance, mainly reflecting the flatness of the longitudinal section profile curve of subgrade and pavement.
[0003] In the subgrade and pavement inspection regulations, it is required that the measurement point is located at a position 80 - 100 cm away from the edge of the subgrade and pavement (i.e., the inner side of the pavement curb). The existing evenness detection devices usually measure by manual marking or direct visual inspection. The measurement process is cumbersome and cannot meet the requirements of the inspection regulations. Content of the Utility Model
[0004] (I) Technical Problems to be Solved
[0005] In view of the deficiencies of the prior art, the utility model provides a subgrade flatness detection device, which solves the problems put forward in the above background technique.
[0006] (II) Technical Solutions
[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:
[0008] A subgrade flatness detection device includes a detection frame. A fixed rear wheel is arranged at the rear of the detection frame. An equidistant mechanism and a detection mechanism are installed on the detection frame. The equidistant mechanism includes an equidistant base, a telescopic ruler rod, a support beam and a guide wheel. A connecting shaft is arranged at the center position of the equidistant base. The connecting shaft is rotatably connected to the front end of the detection frame. A limit sliding groove is arranged on the equidistant base. The telescopic ruler rod is slidably installed in the limit sliding groove. A positioning bolt is threadedly connected to the side wall of the equidistant base. The positioning bolt abuts against the side wall of the telescopic ruler rod. The support beam is connected to the end of the telescopic ruler rod. The guide wheel is rotatably connected to the support beam. The guide wheel abuts against the inner side of the pavement curb. Steering wheels are arranged on both sides of the equidistant base. The detection mechanism is installed on the equidistant base.
[0009] Preferably, there are two limit sliding grooves, which are arranged in parallel on the front and rear sides of the connecting shaft. The ends of the two telescopic ruler rods are both hinged to the support beam. There are two guide wheels rotatably connected to the front and rear sides of the support beam.
[0010] Preferably, support rods are slidably arranged on the front and rear sides of the support beam, the guide wheels are rotatably connected to the lower sides of the support rods, the tops of the two support rods are connected with an adjusting beam plate, an adjusting screw rod is rotatably connected to the adjusting beam plate, and the adjusting screw rod is in threaded connection with the support beam.
[0011] Preferably, the telescopic ruler rod comprises a sliding ruler tube and a telescopic inner rod slidably installed inside the sliding ruler tube, the sliding ruler tube is slidably connected in the limit sliding groove, the support beam is hinged to the end of the telescopic inner rod, a bolt pin is arranged on the side wall of the sliding ruler tube in a threaded connection, pin holes are arranged on the telescopic inner rod, the bolt pin passes through the pin holes, and a plurality of scale lines are arranged on the outer wall of the sliding ruler tube.
[0012] Preferably, the detection mechanism comprises a detection frame, a detection connecting rod, a detection wheel, a scale needle rod, a contact switch and an alarm, the detection frame is fixed on the equidistant base, the detection connecting rod is slidably installed on the equidistant base, the detection wheel is rotatably connected and abuts against the detection connecting rod, the detection wheel abuts against the roadbed plane, the scale needle rod is fixed at the top of the detection connecting rod, the contact switch is installed on the detection frame, the contact switch is arranged in two symmetrically on the upper and lower sides of the scale needle rod, and the contact switch is electrically connected with the alarm.
[0013] Preferably, a centered scale line is arranged on the inner wall of the detection frame, the scale needle rod points to the centered scale line, an adjusting ring is in threaded connection with the upper side of the detection connecting rod, and a support spring is connected between the adjusting ring and the equidistant base.
[0014] Preferably, an adjusting sliding groove is formed in the side wall of the detection frame, synchronous sliding blocks are symmetrically arranged in the adjusting sliding groove, the two contact switches are respectively connected to the two synchronous sliding blocks, an adjusting frame seat is fixed on the detection frame, an adjusting knob is rotatably connected to the adjusting frame seat, an adjusting gear is arranged at the end of the adjusting knob, synchronous gears are rotatably connected to the upper and lower sides of the adjusting frame seat, the synchronous gears on the upper and lower sides are respectively meshed with the upper and lower sides of the adjusting gear, a synchronous lead screw is connected to the synchronous gear, an adjusting nut is fixed on the synchronous sliding block, and the adjusting nut is in threaded connection with the synchronous lead screw.
[0015] (III) Beneficial effects
[0016] The utility model provides a roadbed flatness detection device. The following beneficial effects are achieved:
[0017] 1. In the present utility model, the length of the telescopic ruler rod can be adjusted, and the guide wheel is used to abut against the road curb, so that the roadbed flatness detection device always maintains a specified distance from the inner wall of the road curb during the detection process, avoiding deviation and causing errors in the detection results. At the same time, through the support beam, the equidistant base can rotate around the connecting shaft, that is, the steering wheel on the equidistant base can be synchronized with the inner side wall of the road curb, and can automatically fit the bending direction of the road curb and turn synchronously, always keeping the equidistant detection mechanism equidistant from the road curb and ensuring the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of a roadbed flatness detection device of the present utility model;
[0019] Figure 2 is a cross-sectional view of a roadbed flatness detection device of the present utility model;
[0020] Figure 3 is a schematic structural diagram of the equidistant mechanism in the present utility model;
[0021] Figure 4 is a schematic structural diagram of the detection mechanism in the present utility model.
[0022] In the figure: 1, detection frame; 2, equidistant base; 3, telescopic ruler rod; 31, sliding ruler tube; 32, telescopic inner rod; 4, support beam; 5, guide wheel; 6, connecting shaft; 7, positioning bolt; 8, support rod; 9, adjusting beam plate; 10, adjusting screw; 11, bolt pin; 12, detection frame; 13, detection link; 14, detection wheel; 15, scale needle rod; 16, contact switch; 17, center scale line; 18, adjusting ring; 19, support spring; 20, synchronous slider; 21, adjusting frame base; 22, adjusting gear; 23, synchronous gear; 24, synchronous lead screw; 25, adjusting nut; 26, steering wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.
[0024] The embodiments of the present utility model provide a roadbed flatness detection device, as Figures 1-4As shown in the figure, it includes a detection frame 1. A fixed rear wheel is arranged at the rear side of the detection frame 1. An equidistant mechanism and a detection mechanism are installed on the detection frame 1. The equidistant mechanism includes an equidistant base 2, a telescopic scale rod 3, a support beam 4 and a guide wheel 5. A connecting shaft 6 is arranged at the center position of the equidistant base 2. The connecting shaft 6 is rotatably connected to the front end of the detection frame 1. A limiting sliding groove is arranged on the equidistant base 2. The telescopic scale rod 3 is slidably installed in the limiting sliding groove. A positioning bolt 7 is threadedly connected to the side wall of the equidistant base 2. The positioning bolt 7 abuts against the side wall of the telescopic scale rod 3. The support beam 4 is connected to the end of the telescopic scale rod 3. The guide wheel 5 is rotatably connected to the support beam 4. The guide wheel 5 abuts against the inner side of the road curb. Steering wheels 26 are arranged on both sides of the equidistant base 2. The detection mechanism is installed on the equidistant base 2.
[0025] Support rods 8 are slidably arranged on the front and rear sides of the support beam 4. The guide wheel 5 is rotatably connected to the lower side of the support rod 8. The tops of the two support rods 8 are connected with an adjusting beam plate 9. An adjusting screw rod 10 is rotatably connected to the adjusting beam plate 9. The adjusting screw rod 10 is threadedly connected to the support beam 4. The two guide wheels 5 respectively abut against the inner side of the road curb, which can keep the inclination of the support beam 4 synchronized with that of the road curb.
[0026] There are two limiting sliding grooves, which are arranged in parallel on the front and rear sides of the connecting shaft 6. The ends of the two telescopic scale rods 3 are hinged to the support beam 4. There are two guide wheels 5 rotatably connected to the front and rear sides of the support beam 4. A displacement sliding groove is arranged horizontally on the support beam 4. A displacement slider is arranged on the displacement sliding groove. The end of the telescopic scale rod 3 is hinged to the displacement slider. The support beam 4 keeps the same inclination as the road curb, so that the two telescopic scale rods 3 hinged to the displacement slider can push the connecting shaft 6 of the equidistant base 2 to rotate on the detection frame 1, so that the steering wheels 26 can be synchronized with the inner wall of the road curb. During the movement of the detection device, it can automatically turn through the steering wheels 26 and always keep an equal distance from the road curb, ensuring that the detection mechanism always stays within the specified distance during the detection process.
[0027] The telescopic scale rod 3 includes a sliding scale tube 31 and a telescopic inner rod 32 slidably installed inside the sliding scale tube 31. The sliding scale tube 31 is slidably connected in the limiting sliding groove. The support beam 4 is hinged to the end of the telescopic inner rod 32. A bolt pin 11 is threadedly connected to the side wall of the sliding scale tube 31. A pin hole is arranged on the telescopic inner rod 32. The bolt pin 11 passes through the pin hole. A number of scale lines are arranged on the outer wall of the sliding scale tube 31. By setting the telescopic scale rod 3 as a structure of a telescopic and foldable sliding scale tube 31 and a telescopic inner rod 32, the width space of the detection device can be saved. At the same time, the equal distance can be adjusted through the scale lines on the sliding scale tube 31.
[0028] As shown Figure 1 , 2 , and as shown in Figure 4, the detection mechanism includes a detection frame 12, a detection connecting rod 13, a detection wheel 14, a scale pointer rod 15, a contact switch 16, and an alarm. The detection frame 12 is fixed on the equidistant base 2. The detection connecting rod 13 is slidably installed on the equidistant base 2. The detection wheel 14 is rotatably connected and abuts against the detection connecting rod 13. The detection wheel 14 abuts against the roadbed plane. The scale pointer rod 15 is fixed at the top end of the detection connecting rod 13. The contact switch 16 is installed on the detection frame 12. The contact switch 16 is arranged in two symmetrically on the upper and lower sides of the scale pointer rod 15. The contact switch 16 is electrically connected to the alarm.
[0029] A centered scale line 17 is provided on the inner wall of the detection frame 12. The scale pointer rod 15 points to the centered scale line 17. The centered scale line 17 can be used to mark the centered position of the two contact switches 16. An adjusting ring 18 is threadedly connected to the upper side of the detection connecting rod 13. A support spring 19 is connected between the adjusting ring 18 and the equidistant base 2. The height of the scale pointer rod 15 can be adjusted through the adjusting ring 18 so that the scale pointer rod 15 just points to the centered scale line 17.
[0030] Adjusting chutes are provided on the side wall of the detection frame 12. Synchronous sliders 20 are symmetrically arranged in the adjusting chutes. The two contact switches 16 are respectively connected to the two synchronous sliders 20. An adjusting frame base 21 is fixed on the detection frame 12. An adjusting knob is rotatably connected to the adjusting frame base 21. An adjusting gear 22 is provided at the end of the adjusting knob. Synchronous gears 23 are rotatably connected to the upper and lower sides of the adjusting frame base 21. The upper and lower synchronous gears 23 are respectively engaged with the upper and lower sides of the adjusting gear 22. A synchronous lead screw 24 is connected to the synchronous gear 23. An adjusting nut 25 is fixed on the synchronous slider 20. The adjusting nut 25 is threadedly connected to the synchronous lead screw 24. By rotating the adjusting knob, the upper and lower synchronous gears 23 engaged with each other can be made to rotate synchronously in opposite directions through the adjusting gear 22, and the upper and lower synchronous lead screws 24 can be made to rotate in opposite directions, so as to realize the synchronous sliding of the synchronous sliders 20 in the adjusting chutes in opposite directions through threaded connection to adjust to meet the alarm distance. When the roadbed sinks or bulges to reach the set alarm distance, the detection connecting rod 13 always abuts against the roadbed surface under its own gravity and the action of the support spring 19. During this process, the scale pointer rod 15 slides synchronously with the detection connecting rod 13 until the scale pointer rod 15 abuts against the contact switch 16 to send out an alarm signal, and it can be determined that the roadbed here does not meet the detection standard.
[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A roadbed flatness detection device, comprising a detection frame, a fixed rear wheel is arranged at the rear side of the detection frame, and is characterized in that: The detection frame is equipped with an equidistant mechanism and a detection mechanism, the equidistant mechanism includes an equidistant base, a telescopic ruler rod, a support beam and a guide wheel, a connecting shaft is arranged at the center position of the equidistant base, the connecting shaft is rotatably connected to the front end of the detection frame, a limited sliding groove is arranged on the equidistant base, the telescopic ruler rod is slidably installed in the limited sliding groove, a positioning bolt is threadedly connected on the side wall of the equidistant base, the positioning bolt abuts on the side wall of the telescopic ruler rod, the support beam is connected to the end of the telescopic ruler rod, the guide wheel is rotatably connected to the support beam, the guide wheel abuts on the inner side of the road curb, and steering wheels are arranged on both sides of the equidistant base, the detection mechanism is installed on the equidistant base, two limiting sliding grooves are arranged in parallel on the front and rear sides of the connecting shaft, the ends of the two telescopic ruler rods are hinged on the support beam, and the guide wheel is provided with two rotationally connected to the front and rear sides of the support beam.
2. A roadbed flatness detection device according to claim 1, characterized in that: Support rods are slidably arranged on the front and rear sides of the support beam, the guide wheels are rotatably connected to the lower sides of the support rods, the top ends of the two support rods are connected to adjusting beam plates, the adjusting beam plates are rotatably connected to adjusting screws, and the adjusting screws are threadedly connected to the support beam.
3. A roadbed flatness detection device according to claim 2, characterized in that: The telescopic ruler rod comprises a sliding ruler tube and a telescopic inner rod slidably installed inside the sliding ruler tube, the sliding ruler tube is slidably connected in a limiting sliding groove, the support beam is hinged at the end of the telescopic inner rod, a bolt pin is threadedly connected on the side wall of the sliding ruler tube, a pin hole is provided on the telescopic inner rod, the bolt pin passes through the pin hole, and a plurality of scale lines are provided on the outer wall of the sliding ruler tube.
4. A roadbed flatness detection device according to claim 3, characterized in that: The detection mechanism includes a detection frame, a detection connecting rod, a detection wheel, a ruler needle rod, a contact switch and an alarm. The detection frame is fixed on an equidistant base, the detection connecting rod is slidably installed on the equidistant base, the detection wheel is rotatably connected to the detection connecting rod and abuts against the roadbed plane, the ruler needle rod is fixed on the top of the detection connecting rod, the contact switch is installed on the detection frame, and the contact switch is set to two symmetrically arranged on the upper and lower sides of the ruler needle rod, and the contact switch is electrically connected to the alarm.
5. A roadbed flatness detection device according to claim 4, characterized in that: A center scale line is arranged on the inner wall of the detection frame, the scale needle rod points to the center scale line, an adjustment ring is threadedly connected to the upper side of the detection connecting rod, and a support spring is connected to the adjustment ring and the equidistant base.
6. A roadbed flatness detection device according to claim 5, characterized in that: An adjustment slot is provided on the side wall of the detection frame, and a synchronization slider is symmetrically arranged in the adjustment slot. The two contact switches are respectively connected to the two synchronization sliders. An adjustment frame seat is fixed on the detection frame, and an adjustment knob is rotatably connected to the adjustment frame seat. An adjustment gear is provided on the end of the adjustment knob. The upper and lower sides of the adjustment frame seat are rotatably connected to synchronization gears, and the synchronization gears on the upper and lower sides are respectively meshed with the upper and lower sides of the adjustment gear. A synchronization screw is connected to the synchronization gear, and an adjustment nut is fixed on the synchronization slider, and the adjustment nut is threadedly connected to the synchronization screw.