CN220454537U - Three meters ruler roughness detector - Google Patents
Three meters ruler roughness detector Download PDFInfo
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- CN220454537U CN220454537U CN202321472965.1U CN202321472965U CN220454537U CN 220454537 U CN220454537 U CN 220454537U CN 202321472965 U CN202321472965 U CN 202321472965U CN 220454537 U CN220454537 U CN 220454537U
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- shaped shell
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- guide rail
- ball screw
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- 238000001514 detection method Methods 0.000 claims abstract description 19
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- 230000001771 impaired effect Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a three-meter ruler flatness detector which comprises a strip-shaped shell and a detection device arranged in the strip-shaped shell, wherein a channel along the long side direction is formed in the bottom of the strip-shaped shell, and the detection device comprises a guide rail, a pulley arranged on the guide rail and a laser range finder fixedly arranged on the pulley. The utility model can continuously measure the distance of the path of the pulley. And finally, selecting the maximum gap to judge whether the flatness standard is met. The utility model discloses need not to adopt the clearance to detect by the clearance gauge, greatly practiced thrift the time that uses clearance gauge in-process needs, improved detection efficiency and convenience, still avoided the clearance gauge impaired in the testing process simultaneously, practiced thrift equipment cost in long term.
Description
Technical Field
The utility model relates to the technical field of road construction detection, in particular to a flatness detector for a three-meter ruler.
Background
Along with the increase of the service time of the road pavement, the materials in the part of the road pavement age, such as abrasion, sinking and protruding, the pavement around the well cover cracks and the well cover is damaged, the road flatness and the road comfort are affected, and some potential safety hazards are also caused. Meanwhile, when the new road is built, flatness detection can be performed in order to ensure that the construction quality reaches the standard.
Road surface flatness is one of the important indexes for evaluating the use quality of the road surface. It means that the concave-convex condition of the road surface is measured intermittently or continuously by a prescribed standard gauge. The flatness of the pavement has a certain relation with the flatness of each structural level of the pavement, namely the flatness effect of each level is reflected on the surface of the pavement in an accumulated way. The uneven surface can increase the resistance of the running due to direct contact with the vehicle, so that the vehicle can generate additional vibration in the running process, thereby affecting the running speed, safety, driving stability and passenger comfort. And uneven road surfaces can accumulate rainwater and accelerate the damage of the road surfaces, so that the detection and evaluation of the flatness are very important links of road construction and maintenance.
At present, the road surface flatness detection is mostly a method for measuring the road bed and the road surface flatness by adopting a three-meter ruler, and a metal ruler with a certain length (3 m) is used for being placed on the surface of the road to be measured. Because the road surface is uneven, a gap exists between the road surface and the ruler, and the maximum gap between the road surface and the ruler is measured by using the feeler gauge, namely the maximum gap can be used as an index of road surface flatness in mm.
However, this method has a certain problem that a larger gap needs to be detected one by using a feeler gauge during each detection, and the feeler gauge is troublesome to use, so that the whole detection process is long in time consumption and inconvenient. In addition, when the feeler gauge is used as a precise detection tool and is clung to a rough cement ground, the feeler gauge can be damaged due to friction, and the precision of the feeler gauge is affected.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides a three-meter ruler flatness detector, which solves the problems of long detection time, inconvenience and damage to a feeler gauge existing in the prior art.
According to the embodiment of the utility model, the three-meter ruler flatness detector comprises a strip-shaped shell and a detection device arranged in the strip-shaped shell, wherein the strip-shaped shell is a three-meter long straight-plate type hollow shell, the bottom of the strip-shaped shell is of a horizontal structure, a channel along the long side direction is formed in the bottom of the strip-shaped shell, the detection device comprises a guide rail, a pulley arranged on the guide rail and a laser range finder fixedly arranged on the pulley, the guide rail is arranged along the long side direction of the strip-shaped shell and is right above the channel, the pulley is arranged on the guide rail in a sliding mode and can slide freely along the guide rail, and the laser range finder is arranged at the bottom of the pulley so that a laser emitting head of the laser range finder faces the position where the channel is located vertically.
Further, the guide rail is a ball screw guide rail and comprises a ball screw and smooth rods arranged on two sides of the ball screw in parallel, wherein the ball screw is rotationally arranged, the smooth rods are fixedly arranged, the pulley simultaneously penetrates through the ball screw and two smooth rods, the pulley is connected with the ball screw by a screw rod and is in sliding connection with the smooth rods, and one end of the ball screw is connected with a motor.
Further, the upper surface of the strip-shaped shell is also provided with a display, and the display is electrically connected with the laser range finder.
Furthermore, the transparent baffle is filled in the channel, and the bottom of the transparent baffle is parallel to the bottom surface of the strip-shaped shell, so that the bottom surface of the strip-shaped shell forms a complete plane.
Furthermore, one side of the strip-shaped shell is also provided with a graduated scale, the length of the graduated scale is matched with that of the strip-shaped shell, and the bottom surface of the graduated scale is parallel to the bottom surface of the strip-shaped shell.
Compared with the prior art, the utility model has the following beneficial effects:
the three-meter ruler is manufactured into a flat straight plate mechanism, the guide rail and the pulley are arranged in the straight plate mechanism, and the laser range finder is arranged at the bottom of the pulley, so that the pulley can continuously perform range finding in the sliding process. Because the distance between the laser range finder and the ground is very short, and the speed of light is far greater than the moving speed of the trolley, the distance of the trolley displacement in the time from the light path reflection to the receiving is negligible, and therefore the continuous range finding can be carried out on the path of the trolley. And finally, selecting the maximum gap to judge whether the flatness standard is met. The utility model discloses need not to adopt the clearance to detect by the clearance gauge, greatly practiced thrift the time that uses clearance gauge in-process needs, improved detection efficiency and convenience, still avoided the clearance gauge impaired in the testing process simultaneously, practiced thrift equipment cost in long term.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional view of a strip-shaped housing in an embodiment of the utility model.
In the above figures: 1. a strip-shaped housing; 2. a ball screw; 3. a smooth rod; 4. a pulley; 5. a transparent baffle; 6. a graduated scale; 7. a display screen; 11. a channel; 41. a laser range finder.
Detailed Description
The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1, an embodiment of the present utility model provides a three meter ruler flatness detector, which includes a strip-shaped casing 1 and a detecting device disposed inside the strip-shaped casing 1. The strip-shaped shell 1 in the embodiment is a three-meter long straight-plate type hollow shell, and the outer part of the strip-shaped shell is of a plate structure similar to a ruler but thicker. The bottom of the strip-shaped shell 1 is of a horizontal structure, and a channel 11 along the long side direction is formed in the center of the bottom of the strip-shaped shell 1.
In this embodiment, the detection device includes a guide rail, a pulley 4 disposed on the guide rail, and a laser range finder 41 fixedly mounted on the pulley 4, wherein the guide rail is disposed along the long side direction of the strip-shaped housing 1 and is just above the channel 11, the pulley 4 is slidably disposed on the guide rail and can freely slide along the guide rail, and the laser range finder 41 is disposed at the bottom of the pulley 4, so that the laser emitting head of the laser range finder 41 faces the position of the channel 11 vertically. When the strip-shaped shell 1 is horizontally placed on the ground, the light emitted by the laser range finder 41 just passes through the channel 11 and is emitted to the ground, and is received after being reflected, so that the distance from the ground is calculated, and the actual gap height between the bottom surface of the strip-shaped shell 1 and the ground can be obtained after the distance between the laser emitting head of the laser range finder 41 and the bottom surface of the strip-shaped shell 1 is deducted.
As shown in fig. 2, in a further scheme of this embodiment, the guide rail is a guide rail of a ball screw 2, and includes the ball screw 2 and smooth rods 3 arranged on two sides of the ball screw 2 in parallel, wherein the ball screw 2 is rotatably arranged, the smooth rods 3 are fixedly arranged, the pulley 4 simultaneously penetrates through the ball screw 2 and two smooth rods 3, the pulley 4 is connected with the ball screw 2 by a screw rod, and is in sliding connection with the smooth rods 3, and one end of the ball screw 2 is connected with a motor. When the motor drives the ball screw 2 to rotate, the pulley 4 moves along the ball screw 2 and is fixed by the two smooth rods 3, so that the pulley can only move along the ball screw 2 and cannot rotate. The principle of operation is similar to that of a sliding camera rail.
In a further aspect, a display is further disposed on the upper surface of the strip-shaped casing 1, and the display is electrically connected to the laser range finder 41. The detection result of the laser range finder 41 can be directly displayed outside through the display, so that the observation of workers is facilitated, and the working convenience is further improved. The display may also be used as a touch screen to control movement of the sled 4, switching of the laser rangefinder 41, etc.
In a preferred scheme, the transparent baffle plate 5 is filled in the channel 11, and the bottom of the transparent baffle plate 5 is parallel to the bottom surface of the strip-shaped shell 1, so that the bottom surface of the strip-shaped shell 1 forms a complete plane. Therefore, part of the ground bulge can be prevented from being just positioned on the inner wall of the channel 11, so that detection errors are reduced, and accuracy of flatness detection is improved. Furthermore, one side of the strip-shaped shell 1 is also provided with a graduated scale 6, the length of the graduated scale 6 is matched with the length of the strip-shaped shell 1, and the bottom surface of the graduated scale 6 is parallel to the bottom surface of the strip-shaped shell 1. Simple measurement work on the construction site can be performed through the graduated scale 6, and the applicability of the equipment is improved.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (4)
1. A three meter ruler flatness detector which is characterized in that: the detection device comprises a guide rail, a pulley arranged on the guide rail and a laser range finder fixedly arranged on the pulley, wherein the guide rail is arranged in the long side direction of the strip-shaped shell and is right above the channel, the pulley is arranged on the guide rail in a sliding manner and can slide freely along the guide rail, and the laser range finder is arranged at the bottom of the pulley, so that a laser emission head of the laser range finder faces the position where the channel is located vertically;
the transparent baffle is filled in the channel, and the bottom of the transparent baffle is parallel to the bottom surface of the strip-shaped shell, so that the bottom surface of the strip-shaped shell forms a complete plane.
2. A three meter ruler flatness detector as claimed in claim 1 wherein: the guide rail is a ball screw guide rail and comprises a ball screw and smooth rods arranged on two sides of the ball screw in parallel, wherein the ball screw is rotationally arranged, the smooth rods are fixedly arranged, the pulley simultaneously penetrates through the ball screw and two smooth rods, the pulley is connected with the ball screw by a screw rod and is in sliding connection with the smooth rods, and one end of the ball screw is connected with a motor.
3. A three meter ruler flatness detector as claimed in claim 1 wherein: the upper surface of the strip-shaped shell is also provided with a display, and the display is electrically connected with the laser range finder.
4. A three meter ruler flatness detector as claimed in claim 1 wherein: one side of the strip-shaped shell is also provided with a graduated scale, the length of the graduated scale is matched with that of the strip-shaped shell, and the bottom surface of the graduated scale is parallel to the bottom surface of the strip-shaped shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321472965.1U CN220454537U (en) | 2023-06-12 | 2023-06-12 | Three meters ruler roughness detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321472965.1U CN220454537U (en) | 2023-06-12 | 2023-06-12 | Three meters ruler roughness detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220454537U true CN220454537U (en) | 2024-02-06 |
Family
ID=89728903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321472965.1U Active CN220454537U (en) | 2023-06-12 | 2023-06-12 | Three meters ruler roughness detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220454537U (en) |
-
2023
- 2023-06-12 CN CN202321472965.1U patent/CN220454537U/en active Active
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