CN211872517U - Three-meter straight ruler for detecting pavement evenness - Google Patents
Three-meter straight ruler for detecting pavement evenness Download PDFInfo
- Publication number
- CN211872517U CN211872517U CN201922339489.6U CN201922339489U CN211872517U CN 211872517 U CN211872517 U CN 211872517U CN 201922339489 U CN201922339489 U CN 201922339489U CN 211872517 U CN211872517 U CN 211872517U
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- sliding
- rod
- rack
- detection
- ruler
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Abstract
The utility model discloses a three-meter ruler for detecting pavement evenness, which comprises a detection ruler rod, wherein two side walls of the detection ruler rod are provided with sliding grooves, and the upper surface of the detection ruler rod is provided with a fixed groove in a penetrating way; sliding plates are slidably mounted in the two sliding grooves, vertical rods are mounted on the upper surfaces of the sliding plates, fixed shafts are mounted at the upper ends of the vertical rods, gears are rotatably mounted on the outer sides of the fixed shafts, and indicating needles are mounted at the front ends of the fixed shafts; the sliding plate surface runs through and is provided with the sliding hole, sliding hole inside slidable mounting has the slide bar, the rack is installed to the upper end of slide bar, thrust spring is installed in the slide bar outside. Has the advantages that: utilize the meshing of gear and rack, can convert reciprocating of rack to the rotation of gear, can realize the same proportion of detecting data and enlarge, improved the precision of detecting data, be convenient for observe detecting data, improved the detection speed that the road flatness detected greatly.
Description
Technical Field
The utility model relates to a road surface detection area, concretely relates to three meters rulers for road surface roughness detects.
Background
The detection output indexes of the road flatness are more, and some detection indexes used in national regions, such as: NAASRA index in australia, APL index in france, etc. In China, the maximum gap h and the standard deviation sigma are usually detected by using three-meter ruler quantity.
When road construction process under construction carries out the quality testing, carry out the measuring in clearance through the feeler gauge in the biggest clearance position between three meters ruler bottom surfaces and road surface, judge the roughness on road surface through the height h in the biggest clearance of multiunit, when actual operation, the feeler gauge uses very inconveniently, and needs multiple feeler gauge combination to carry out the clearance and detect, and detection speed is slower, has seriously influenced the efficiency that detects.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a three meters rulers for road flatness detects just in order to solve above-mentioned problem, the utility model provides an it realizes the same proportion of detection data to enlarge among a great deal of technical scheme preferred technical scheme, has improved the precision of detection data, is convenient for observe detection data, has improved the technical effect of the detection speed that road flatness detected greatly, and the detail is described below.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a three meters ruler for pavement evenness detection, including the detection ruler pole, the detection ruler pole cross-section is "U" type, and the open end is down, and the inside of detection ruler pole both sides wall all is provided with the sliding tray, and the sliding tray extends along the length direction of detection ruler pole, and detection ruler pole upper surface runs through and sets up the fixed slot;
sliding plates are slidably mounted in the two sliding grooves, vertical rods are mounted on the upper surfaces of the sliding plates, the upper ends of the vertical rods penetrate through the fixing grooves, a fixing shaft is mounted on the sliding plates, gears are rotatably mounted on the outer sides of the fixing shaft, annular scale marks are arranged on the front surfaces of the gears by taking the axes of the gears as the reference, and the front ends of the fixing shafts penetrate through the gears and are provided with indicating needles;
the sliding plate surface runs through and is provided with the slip hole, and the inside slidable mounting of slip hole has the slide bar, and the fixed slot is worn out to the upper end of slide bar, and installs the rack, and rack and gear mesh mutually, and thrust spring is installed in the slide bar outside, and thrust spring is located between rack and the sliding plate, and the fixed slot is worn out to the slide bar bottom, and installs the contact piece.
Adopt above-mentioned three meters straightedges for road flatness detects, during the use device, the position that needs to carry out the measurement, place and detect the chi pole, utilize sliding fit between sliding plate and the sliding tray, move the sliding plate to the great position in detection chi pole and ground clearance, overcome thrust spring's elasticity, press down the rack, make the sliding bar slide in sliding hole inside, make contact block contact ground, because rack and gear engagement, along with rack downstream, the gear rotates, make the scale of pointer instruction change, be convenient for observe the removal height of rack through the scale of instructing, it is more convenient to make the detection, and the meshing cooperation between rack and the gear, can expand the reciprocating size equal proportion of rack, it is more accurate to make the detection.
Preferably, the sliding rod and the sliding hole are square in cross section and are in clearance fit.
Preferably, the upper surface of the sliding plate is provided with a limiting rod, the limiting rod extends vertically and is far away from the gear, and the sliding plate is close to the back side of the rack.
Preferably, the side wall of the limiting rod, which is far away from the rack, is provided with a pull ring.
Preferably, the upper end of the rack is provided with a pressing block, and the pressing block is made of rubber.
Preferably, the bottom surface of the sliding rod is provided with a threaded hole, the upper surface of the contact block is provided with a lead screw, and the lead screw is in threaded fit with the threaded hole.
Preferably, the vertical side wall of the sliding plate is provided with a communication hole, the communication hole is communicated with the sliding hole, and a locking bolt for fixing the sliding rod is installed inside the communication hole through threads.
Has the advantages that: utilize the meshing of gear and rack, can convert reciprocating of rack to the rotation of gear, can realize the same proportion of detecting data and enlarge, improved the precision of detecting data, be convenient for observe detecting data, improved the detection speed that the road flatness detected greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 creative efforts.
Fig. 1 is a schematic view of the internal structure of the present invention;
fig. 2 is a front view of the present invention;
fig. 3 is a left side view of the thrust spring of the present invention.
The reference numerals are explained below:
1. detecting a ruler rod; 101. fixing grooves; 102. a sliding groove; 2. a sliding plate; 201. erecting a rod; 202. A communicating hole; 203. locking the bolt; 204. a slide hole; 3. a fixed shaft; 301. an indicator needle; 4. a gear; 5. a rack; 501. a slide bar; 502. briquetting; 503. a threaded hole; 504. a screw shaft; 505. a contact block; 506. a thrust spring; 6. a limiting rod; 601. and (4) a pull ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, the utility model provides a three-meter ruler for detecting road flatness, which comprises a detection ruler rod 1, wherein the section of the detection ruler rod 1 is U-shaped, the opening end of the detection ruler rod is downward, sliding grooves 102 are arranged inside two side walls of the detection ruler rod 1, the sliding grooves 102 extend along the length direction of the detection ruler rod 1, and a fixing groove 101 is arranged on the upper surface of the detection ruler rod 1 in a penetrating manner;
the sliding plates 2 are slidably mounted in the two sliding grooves 102, the upright rods 201 are mounted on the upper surfaces of the sliding plates 2, the upper ends of the upright rods 201 penetrate through the fixing grooves 101, the fixing shaft 3 is mounted on the upper end of the upright rods 201, the gear 4 is rotatably mounted on the outer side of the fixing shaft 3, annular scale marks are arranged on the front surface of the gear 4 by taking the axis of the gear as a reference, and the front end of the fixing shaft 3 penetrates through the gear 4 and is provided;
the surface of the sliding plate 2 is provided with a sliding hole 204 in a penetrating manner, a sliding rod 501 is slidably mounted in the sliding hole 204, the upper end of the sliding rod 501 penetrates through the fixing groove 101 and is provided with a rack 5, the rack 5 is meshed with the gear 4, a thrust spring 506 is mounted on the outer side of the sliding rod 501 and is located between the rack 5 and the sliding plate 2, and the bottom end of the sliding rod 501 penetrates through the fixing groove 101 and is provided with a contact block 505.
As an alternative embodiment, the cross sections of the sliding rod 501 and the sliding hole 204 are square, and are in clearance fit, so that the sliding rod 501 is prevented from rotating inside the sliding hole 204, and the sliding rod 501 can slide smoothly inside the sliding hole 204.
The upper surface of the sliding plate 2 is provided with a limiting rod 6, the limiting rod 6 vertically extends and is far away from the gear 4, the sliding plate 2 is close to the back side of the rack 5, and the sliding plate is arranged like this, so that the rack 5 can be guided through the limiting rod 6 when the rack 5 slides due to the close proximity of the sliding plate 2 and the back side of the rack 5.
The side wall of the limiting rod 6, which is far away from the rack 5, is provided with a pull ring 601, and the pull ring 601 is arranged so as to facilitate the movement of the device through pulling.
A pressing block 502 is installed at the upper end of the rack 5, and the pressing block 502 is made of rubber, so that the rack 5 is pushed to move downwards by pressing the pressing block 502.
The bottom surface of the sliding rod 501 is provided with a threaded hole 503, the upper surface of the contact block 505 is provided with a lead screw 504, and the lead screw 504 is in threaded fit with the threaded hole 503, so that the lead screw 504 can be screwed in and out of the threaded hole 503 by utilizing the threaded fit between the lead screw 504 and the threaded hole 503, and the distance between the contact block 505 and the sliding rod 501 can be adjusted.
The vertical side wall of the sliding plate 2 is provided with a communication hole 202, the communication hole 202 is communicated with a sliding hole 204, and a locking bolt 203 for fixing the sliding rod 501 is installed in the communication hole 202 through threads, so that when the contact block 505 is adjusted, the height of the rack 5 can be adjusted, the pointer 301 points to a '0' groove, the locking bolt 203 is screwed in, the inner end of the locking bolt 203 is in close contact with the sliding rod 501, the rack 5 can be fixed, the rotation of the gear 4 is avoided, the height of the contact block 505 is adjusted, the contact block 505 is parallel to the bottom surface of the detection ruler rod 1, the service life of the contact block 505 is prolonged, and the reduction of the whole service life of the device caused by the abrasion of the contact block 505 is avoided.
Adopt above-mentioned structure, during the use device, in the position that needs to carry out the measurement, place detection chi pole 1, utilize sliding fit between sliding plate 2 and sliding tray 102, move sliding plate 2 to the great position in detection chi pole 1 and ground clearance, overcome the elasticity of thrust spring 506, press down rack 5, make sliding rod 501 slide in sliding hole 204 inside, make contact block 505 contact ground, because rack 5 and gear 4 mesh, along with rack 5 moves down, gear 4 rotates, make the scale that pointer 301 instructs change, be convenient for observe the removal height of rack 5 through the scale of instructing, it is more convenient to make the detection, and the meshing cooperation between rack 5 and gear 4, can expand the reciprocating size equal proportion of rack 5, it is more accurate to make the detection.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a three meters straightedges for road surface roughness detects which characterized in that: the detection ruler comprises a detection ruler rod (1), wherein the section of the detection ruler rod (1) is U-shaped, the opening end of the detection ruler rod is downward, sliding grooves (102) are formed in the inner portions of two side walls of the detection ruler rod (1), the sliding grooves (102) extend along the length direction of the detection ruler rod (1), and a fixing groove (101) penetrates through the upper surface of the detection ruler rod (1);
sliding plates (2) are slidably mounted in the two sliding grooves (102), vertical rods (201) are mounted on the upper surfaces of the sliding plates (2), the upper ends of the vertical rods (201) penetrate through the fixing grooves (101), a fixing shaft (3) is mounted, gears (4) are rotatably mounted on the outer sides of the fixing shaft (3), annular scale marks are arranged on the front surfaces of the gears (4) by taking the axes of the gears as the reference, and indicating needles (301) are mounted at the front ends of the fixing shaft (3) and penetrate through the gears (4);
the surface of the sliding plate (2) is provided with a sliding hole (204) in a penetrating mode, a sliding rod (501) is installed inside the sliding hole (204) in a sliding mode, the upper end of the sliding rod (501) penetrates out of the fixing groove (101), a rack (5) is installed, the rack (5) is meshed with the gear (4), a thrust spring (506) is installed on the outer side of the sliding rod (501), the thrust spring (506) is located between the rack (5) and the sliding plate (2), and the bottom end of the sliding rod (501) penetrates out of the fixing groove (101) and is provided with a contact block (505).
2. A three-meter ruler for road flatness detection as claimed in claim 1, wherein: the cross sections of the sliding rod (501) and the sliding hole (204) are square and are in clearance fit.
3. A three-meter ruler for road flatness detection as claimed in claim 1, wherein: the upper surface of the sliding plate (2) is provided with a limiting rod (6), the limiting rod (6) vertically extends and is far away from the gear (4), and the sliding plate (2) is close to the back side of the rack (5).
4. A three-meter ruler for road flatness detection as claimed in claim 3, wherein: and a pull ring (601) is arranged on the side wall of the limiting rod (6) far away from the rack (5).
5. A three-meter ruler for road flatness detection as claimed in claim 1, wherein: and a pressing block (502) is installed at the upper end of the rack (5), and the pressing block (502) is made of rubber.
6. A three-meter ruler for road flatness detection as claimed in claim 1, wherein: the bottom surface of the sliding rod (501) is provided with a threaded hole (503), the upper surface of the contact block (505) is provided with a lead screw (504), and the lead screw (504) is in threaded fit with the threaded hole (503).
7. A three-meter ruler for pavement evenness testing as claimed in claim 6, wherein: the vertical side wall of the sliding plate (2) is provided with a communication hole (202), the communication hole (202) is communicated with the sliding hole (204), and a locking bolt (203) used for fixing the sliding rod (501) is installed inside the communication hole (202) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922339489.6U CN211872517U (en) | 2019-12-24 | 2019-12-24 | Three-meter straight ruler for detecting pavement evenness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922339489.6U CN211872517U (en) | 2019-12-24 | 2019-12-24 | Three-meter straight ruler for detecting pavement evenness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211872517U true CN211872517U (en) | 2020-11-06 |
Family
ID=73263535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922339489.6U Expired - Fee Related CN211872517U (en) | 2019-12-24 | 2019-12-24 | Three-meter straight ruler for detecting pavement evenness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211872517U (en) |
-
2019
- 2019-12-24 CN CN201922339489.6U patent/CN211872517U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 Termination date: 20211224 |