CN218911056U

CN218911056U - Flatness measuring instrument with high measuring precision

Info

Publication number: CN218911056U
Application number: CN202223379177.6U
Authority: CN
Inventors: 徐亚星; 翟仕林; 周海强; 蔡稳; 杨峰
Original assignee: Shanghai Changfa Geotechnical Engineering Technology Co ltd
Current assignee: Shanghai Changfa Geotechnical Engineering Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-04-25
Anticipated expiration: 2032-12-15

Abstract

The utility model relates to the technical field of building measurement equipment and discloses a flatness measuring instrument with high measurement precision, which comprises two bottom plates, wherein the top ends of the two bottom plates are fixedly connected with a fixed sleeve, a movable groove is arranged in the fixed sleeve, guide grooves are arranged on the left side wall and the right side wall of the movable groove, a limiting block is connected with the inner wall of the guide groove in a sliding manner, a threaded rod is rotatably connected with the inner bottom wall of the movable groove, a first bevel gear is fixedly connected with the outer bottom end of the threaded rod, a damping shaft is rotatably connected with the through hole of the outer bottom end of the fixed sleeve, and one end of the damping shaft, which is close to the first bevel gear, extends into the movable groove. According to the utility model, fine adjustment of the height of the universal wheel can be realized, and the phenomenon that the height of the universal wheel at two side ends is deviated due to certain abrasion or other conditions possibly exists under the use condition is avoided, so that the measurement precision is influenced, and the measurement precision is greatly improved.

Description

Flatness measuring instrument with high measuring precision

Technical Field

The utility model relates to the technical field of building measurement equipment, in particular to a flatness measuring instrument with high measurement precision.

Background

Road surface flatness is one of the main indexes for measuring the overall structure and the road surface quality. The flatness of the road surface plays an important role in the running speed, running cost and safety comfort of motor vehicles, so that the flatness of the road surface is required to be detected in the process of building construction, when the flatness is detected in building construction, the flatness measuring instrument is adopted for field measurement, the existing flatness measuring instrument obtains a value through distance sensing detection, compared with the traditional measuring mode, the precision is greatly improved, the base carrying the measuring instrument is usually an eight-wheel instrument, the universal wheels at two side ends possibly have certain abrasion or other conditions under the use to cause the height to generate deviation, the deviation can directly influence the measuring result, the measuring precision is reduced, and the flatness measuring instrument with high measuring precision is provided for solving the problem.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a flatness measuring instrument with high measuring precision.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a roughness measuring apparatu that measurement accuracy is high, includes two bottom plates, two the equal fixedly connected with fixed sleeve in top of bottom plate, fixed sleeve's inside is provided with the movable groove, the lateral wall all is provided with the guide way about the movable groove, the inner wall sliding connection of guide way has the stopper, the interior bottom wall of movable groove rotates and is connected with the threaded rod, the outside bottom fixedly connected with first bevel gear of threaded rod, fixed sleeve's outside bottom through-hole department rotates and is connected with the damping axle, the one end that the damping axle is close to first bevel gear extends to the inside of movable groove, and fixedly connected with second bevel gear, fixed sleeve's top through-hole department sliding connection has the movable column, the bottom of movable column is provided with the screw thread groove.

As a further description of the above technical solution:

the left side the top fixedly connected with head rod of movable column, the top fixedly connected with detector of head rod, the right-hand member sliding connection of head rod has the second connecting rod, the rear end of second connecting rod from left to right equidistance is provided with a plurality of screw hole, the rear end through-hole department sliding connection of head rod has adjusting bolt.

As a further description of the above technical solution:

the model of the adjusting bolt is M8, and the adjusting bolt is matched with the threaded holes.

As a further description of the above technical solution:

the outer side of the first bevel gear is connected with the outer side of the second bevel gear in a meshed mode, and the outer wall of the threaded rod is connected with the inner wall of the thread groove in a threaded mode.

As a further description of the above technical solution:

the other end of the damping shaft extends to the outside of the fixed sleeve, and is fixedly connected with a handle, and anti-skid patterns are arranged on the outside of the handle.

As a further description of the above technical solution:

the cross sections of the two limiting blocks are square, and are respectively and fixedly connected to two sides of the outer bottom end of the movable column.

As a further description of the above technical solution:

and universal wheels are fixedly connected to four corners of the bottom ends of the two bottom plates.

The utility model has the following beneficial effects:

according to the utility model, through the mutual matching of the structures such as the threaded rod, the threaded groove, the fixed sleeve, the first bevel gear, the second bevel gear, the movable column, the fixed sleeve and the like, the height of the universal wheel can be finely adjusted, and the phenomenon that the height of the universal wheel at two side ends is deviated due to certain abrasion or other conditions under the use condition is avoided, so that the measurement precision is influenced, and the measurement precision is greatly improved.

Drawings

FIG. 1 is a front perspective view of a flatness measuring instrument with high measuring accuracy according to the present utility model;

FIG. 2 is a cross-sectional view of a fixing sleeve of the flatness measuring instrument with high measuring accuracy according to the present utility model;

fig. 3 is a rear perspective view of a flatness measuring instrument with high measuring accuracy according to the present utility model.

Legend description:

1. a thread groove; 2. a limiting block; 3. a threaded rod; 4. a movable groove; 5. a first bevel gear; 6. a damping shaft; 7. a handle; 8. a second bevel gear; 9. a bottom plate; 10. a guide groove; 11. a movable column; 12. a fixed sleeve; 13. a first connecting rod; 14. a detector; 15. a second connecting rod; 16. a universal wheel; 17. a threaded hole; 18. and (5) adjusting a bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the flatness measuring instrument with high measuring precision comprises two bottom plates 9, wherein the top ends of the two bottom plates 9 are fixedly connected with a fixed sleeve 12, a movable groove 4 is arranged in the fixed sleeve 12, the left side wall and the right side wall of the movable groove 4 are respectively provided with a guide groove 10, the inner wall of the guide groove 10 is slidably connected with a limiting block 2, when a movable column 11 moves, the limiting block 2 moves on the inner wall of the guide groove 10, the movable column 11 can not rotate, the movable column 11 can be ensured to normally move, the inner bottom wall of the movable groove 4 is rotationally connected with a threaded rod 3, the outer bottom end of the threaded rod 3 is fixedly connected with a first bevel gear 5, the through hole of the outer bottom end of the fixed sleeve 12 is rotationally connected with a damping shaft 6, one end of the damping shaft 6 close to the first bevel gear 5 extends to the inner part of the movable groove 4 and is fixedly connected with a second bevel gear 8, the through hole of the top end of the fixed sleeve 12 is slidably connected with the movable column 11, the bottom end of the movable column 11 is provided with a thread groove 1, the handle 7 is rotated to enable the damping shaft 6 to rotate and further enable the second bevel gear 8 to rotate, so that the first bevel gear 5 which is in meshed connection rotates, the threaded rod 3 rotates and moves in a threaded manner with the thread groove 1, the movable column 11 moves up and down on the inner wall of the movable groove 4, meanwhile, the movable column 11 moves, the limiting block 2 moves on the inner wall of the guide groove 10, the movable column 11 cannot rotate, the movable column 11 can be ensured to move normally, the height of the universal wheel 16 can be ensured to be finely adjusted, the leveling of the universal wheel 16 is completed, the problem that the universal wheels 16 at two side ends possibly have certain abrasion or other conditions to cause height deviation during use, the influence on measurement accuracy is solved, thus greatly improving the measurement accuracy.

The top end of the left movable column 11 is fixedly connected with a first connecting rod 13, the top end of the first connecting rod 13 is fixedly connected with a detector 14, the detector 14 is a detection device for detecting road surface flatness, the detection device is a mature technology, so repeated description is omitted here, the right end of the first connecting rod 13 is slidably connected with a second connecting rod 15, the rear end of the second connecting rod 15 is equidistantly provided with a plurality of threaded holes 17 from left to right, the rear end through hole of the first connecting rod 13 is slidably connected with an adjusting bolt 18, the adjusting bolt 18 is screwed into the threaded holes 17 by screwing the adjusting bolt 18 after pulling the second connecting rod 15 outwards for a certain distance, compared with the existing fixed measuring instrument, the measuring instrument can be used for adjusting the length extension, the measuring precision can be further improved, the structural design is reasonable, the practicability is strong, the model of the adjusting bolt 18 is M8, the stability of the connecting rod 13 and the second connecting rod 15 is enhanced, the adjusting bolt 18 is matched with a plurality of threaded holes 17, the outer side of the first bevel gear 5 is meshed with the outer side of the second bevel gear 8, the second bevel gear 8 rotates to enable the first bevel gear 5 to rotate, the outer wall of the threaded rod 3 is in threaded connection with the inner wall of the thread groove 1, the threaded rod 3 rotates and moves in a threaded manner with the thread groove 1, the movable column 11 moves up and down on the inner wall of the movable groove 4, the other end of the damping shaft 6 extends to the outer side of the fixed sleeve 12, the second bevel gear 8 is prevented from rotating under the action of the damping shaft 6, a handle 7 is fixedly connected, anti-skid threads are arranged on the outer side of the handle 7, a user can conveniently rotate the damping shaft 6 through rotating the handle 7, the transverse sections of the two limiting blocks 2 are square, and respectively fixed connection is in the outside bottom both sides department of activity post 11, and when activity post 11 moved, stopper 2 moved at the inner wall of guide way 10, makes activity post 11 can not take place the rotation, guarantees that activity post 11 can normally remove, and the equal fixedly connected with universal wheel 16 in bottom four corners department of two bottom plates 9 is convenient for the removal of device.

Working principle: when the device is specifically used, the damping shaft 6 rotates through the rotating handle 7, and the second bevel gear 8 rotates further, so that the first bevel gear 5 connected in a meshed mode rotates, the threaded rod 3 rotates and moves in a threaded mode with the threaded groove 1, the movable column 11 moves up and down on the inner wall of the movable groove 4, meanwhile, the movable column 11 moves, the limiting block 2 moves on the inner wall of the guide groove 10, the movable column 11 cannot rotate, the movable column 11 can be guaranteed to normally move, the height of the universal wheel 16 can be finely adjusted, the leveling of the universal wheel 16 is achieved, the problem that the height of the universal wheel 16 at two side ends possibly appears to deviate due to certain abrasion or other conditions is solved, the influence on measurement accuracy is caused, the measurement accuracy is greatly improved, after a certain distance is pulled outwards, the adjusting bolt 18 is screwed into the threaded hole 17 through tightening the adjusting bolt 18, adjustment on the length can be extended, the single-side deviation can be adjusted, the measurement accuracy is further improved, and the device is reasonable in design and practical measurement accuracy is further improved.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a roughness measuring apparatu that measurement accuracy is high, includes two bottom plates (9), its characterized in that: the novel damping device comprises a base plate (9), wherein the top ends of the base plate are fixedly connected with a fixing sleeve (12), a movable groove (4) is formed in the fixing sleeve (12), guide grooves (10) are formed in the left side wall and the right side wall of the movable groove (4), a limiting block (2) is slidably connected to the inner wall of the guide groove (10), a threaded rod (3) is rotatably connected to the inner bottom wall of the movable groove (4), a first bevel gear (5) is fixedly connected to the outer bottom end of the threaded rod (3), a damping shaft (6) is rotatably connected to the through hole of the outer bottom end of the fixing sleeve (12), one end of the damping shaft (6) close to the first bevel gear (5) extends to the inside of the movable groove (4), a second bevel gear (8) is fixedly connected to the damping shaft, a movable column (11) is slidably connected to the through hole of the top end of the fixing sleeve (12), and a thread groove (1) is formed in the bottom end of the movable column (11).

2. The flatness measurement instrument of claim 1, wherein: the left side the top fixedly connected with head rod (13) of movable column (11), the top fixedly connected with detector (14) of head rod (13), the right-hand member sliding connection of head rod (13) has second connecting rod (15), the rear end of second connecting rod (15) is from left to right equidistant to be provided with a plurality of screw hole (17), the rear end through-hole department sliding connection of head rod (13) has adjusting bolt (18).

3. The flatness measurement instrument of claim 2, wherein: the type of the adjusting bolt (18) is M8, and the adjusting bolt (18) is matched with a plurality of threaded holes (17).

4. The flatness measurement instrument of claim 1, wherein: the outer side of the first bevel gear (5) is in meshed connection with the outer side of the second bevel gear (8), and the outer wall of the threaded rod (3) is in threaded connection with the inner wall of the thread groove (1).

5. The flatness measuring instrument with high measuring accuracy according to claim 1, characterized in that the other end of the damping shaft (6) extends to the outside of the fixed sleeve (12) and is fixedly connected with a handle (7), and the outside of the handle (7) is provided with anti-slip patterns.

6. The flatness measurement instrument of claim 1, wherein: the cross sections of the two limiting blocks (2) are square, and are respectively and fixedly connected to two sides of the outer bottom end of the movable column (11).

7. The flatness measurement instrument of claim 1, wherein: universal wheels (16) are fixedly connected to four corners of the bottom ends of the two bottom plates (9).