CN212871021U

CN212871021U - Bridge height measuring device

Info

Publication number: CN212871021U
Application number: CN202022218302.XU
Authority: CN
Inventors: 王彬; 白龙飞; 彭刚
Original assignee: Chongqing Zhengdao Road And Bridge Engineering Quality Inspection Center Co ltd
Current assignee: Chongqing Zhengdao Road And Bridge Engineering Quality Inspection Center Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-04-02
Anticipated expiration: 2030-09-30

Abstract

The utility model provides a bridge height measuring device, which relates to the technical field of height measuring devices and comprises a winding box, wherein a rotating shaft is rotatably arranged in the middle of the winding box, an opening is arranged on the side surface of the winding box, a measuring component is arranged at the opening and comprises a measuring rope wound on the rotating shaft, and one end of the measuring rope is fixed on the rotating shaft; a reel is rotatably arranged in the winding box, the other end of the measuring rope winds around the reel and extends out of the opening to form a free end, and the free end of the measuring rope is connected with a plumb bob; and a counter is arranged on the outer side of the winding box and connected with a reel. This solution has the advantage of reducing measurement errors.

Description

Bridge height measuring device

Technical Field

The utility model relates to a height measurement device's technical field especially relates to a bridge height measurement device.

Background

And in the bridge construction process, the actual height of the bridge is measured and compared with the design value to check whether the bridge construction is within the allowable error value range of the design value. The related art is to measure the height of a bridge by a worker pulling a tape of sufficient length to the bottom of the bridge.

The prior related art has the following technical defects: the bridge is generally higher, and when using the tape measure to measure the bridge height, the windage coefficient that the tape measure received is great, and in the measurement process, the tape measure receives the windage and produces certain crooked for there is great deviation in measuring altitude value.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, this scheme provides a bridge height measurement device, and it has the advantage that reduces the measurement deviation.

According to the embodiment of the utility model, the bridge height measuring device comprises a winding box, wherein a rotating shaft is rotatably arranged in the middle of the winding box, an opening is formed in the side surface of the winding box, a measuring component is arranged at the opening and comprises a measuring rope wound on the rotating shaft, and one end of the measuring rope is fixed on the rotating shaft; a reel is rotatably arranged in the winding box, the other end of the measuring rope winds around the reel and extends out of the opening to form a free end, and the free end of the measuring rope is connected with a plumb bob; and a counter is arranged on the outer side of the winding box and connected with a reel.

According to the technical scheme, when the height of the bridge is measured, the measuring rope is released, the measuring rope is pulled to the bottom of the bridge under the action of the gravity of the plumb bob, when the device releases the measuring rope, the measuring rope is wound on the winding wheel, the linear displacement of the winding wheel in the tangential direction is the length of the released measuring rope, the winding wheel converts the measured length into the number of rotating turns, the number of the rotating turns of the winding wheel is recorded through the counter, and the number of the turns is multiplied by the perimeter of the winding wheel and is used as the measured height of the bridge; the wind resistance coefficient of the measuring rope is small in the measuring process, and the measuring deviation caused by bending is small.

Preferably, two ends of the rotating shaft extend out of two side faces of the winding box, two ends of the rotating shaft extending out of the winding box are respectively provided with a clamping groove, and a shaft retainer ring is clamped in the clamping grooves respectively.

Through above technical scheme, the structure that uses axle to use retaining ring and pivot can conveniently carry out the dismouting to the device, and the draw-in groove can reduce the possibility that axle used retaining ring drops for device reliability more.

Preferably, a crank is mounted at one end of the rotating shaft, and a rotating drum is rotatably mounted on the crank.

Through above technical scheme, the pivot can conveniently be rotated to the crank for the process of rolling measuring rope is more convenient, and the rotary drum can reduce the friction between palm and the crank, makes the process of rotating the pivot more convenient.

Preferably, a sliding shaft is rotatably mounted at the opening close to the winding box, the rotating axis of the sliding shaft is parallel to the rotating axis of the rotating shaft, and anti-slip teeth are arranged on the sliding shaft along the length direction of the sliding shaft; a sliding hole is formed in the middle of the reel and is a through hole matched with the sliding shaft and the anti-sliding teeth; the sliding shaft is connected with the counter.

Through the technical scheme, when the measuring rope is released or wound, the measuring rope can be regularly wound on the rotating shaft by utilizing the matching structure of the sliding shaft and the winding wheel, so that the possibility that the measuring rope is wound on the rotating shaft is reduced, and the device is more reliable; the anti-skidding teeth can synchronously transmit the rotation of the reel to the sliding shaft and then to the counter, so that the counter can obtain more accurate data.

Preferably, a handle is mounted to an outer side of the winding box.

Through the technical scheme, the handle can be used for conveniently taking the device; simultaneously, when the measuring rope is rolled up, the crank is more conveniently rotated through holding the handle.

Compared with the prior art, the utility model discloses one of following beneficial effect has at least:

1. the measuring device of the scheme has a lower wind resistance coefficient, so that the measured value is more accurate;

2. when the measuring rope is wound or released, the possibility that the measuring rope is wound inside the device can be reduced by using the matching of the sliding shaft and the winding wheel, so that the device is more reliable.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a schematic view of the device with the end caps removed to reveal the internal structure of the device;

FIG. 3 is an exploded view showing the mounting relationship between the shaft, crank and drum;

fig. 4 is an enlarged view of a portion a in fig. 2.

In the above drawings: 1. a coiling box; 11. a box body; 111. an installation port; 12. an end cap; 13. an opening; 14. a handle; 2. a rotating shaft; 21. a card slot; 22. a retainer ring for a shaft; 23. a crank; 24. a rotating drum; 25. positioning a nut; 3. a measurement assembly; 31. measuring a rope; 32. a reel; 33. a counter; 4. a slip axis; 41. anti-slip teeth; 5. and (5) plumb bob.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

A bridge height measuring device, refer to fig. 1, including the rolling box 1, rotate the pivot 2 installed in the rolling box 1 and be used for measuring the measuring module 3 of height, the device of this scheme has lower windage coefficient, has the advantage that reduces measuring error.

Referring to fig. 1 and 2, the winding box 1 includes a box body 11 and an end cover 12, the box body 11 is a disc-shaped shell member, a mounting opening 111 is provided on one side of the box body 11, and the box body 11 can be made of steel plate or rigid plastic; the end cover 12 is a circular plate, the end cover 12 can be made of a steel plate or a hard plastic plate, and the end cover 12 is connected with the box body 11 through screws.

Referring to fig. 3, the rotating shaft 2 is a cylinder, the rotating shaft 2 can be made of round steel, through holes are respectively formed in the middle of two end faces of the winding box 1, and the rotation axis of each through hole is perpendicular to the end face of the winding box 1; the rotating shaft 2 penetrates through the through hole and extends out of two ends to form extending ends, clamping grooves 21 are respectively formed in the end faces, close to the coiling box 1, of the two extending ends of the rotating shaft 2, the clamping grooves 21 are annular grooves with rotating axes coinciding with the rotating axes of the rotating shaft 2, shaft check rings 22 are clamped in the clamping grooves 21, the shaft check rings 22 can be obtained through market purchase, and the matching structures of the shaft check rings 22 and the clamping grooves 21 can be more convenient for dismounting the rotating shaft 2; meanwhile, the possibility that the rotating shaft 2 slides along the axis direction of the rotating shaft and falls off can be reduced.

A crank 23 is fixed on one of the extending ends of the rotating shaft 2, the crank 23 is an "L" shaped member, the crank 23 can be made of cylindrical steel, and the crank 23 and the rotating shaft 2 can be fixed by welding or screwing. The crank 23 can facilitate its rotation when rotating the shaft 2.

The crank 23 is rotatably provided with the rotating drum 24, the rotating drum 24 is a cylindrical component, the rotating drum 24 can be made of steel pipes, one end of the crank 23, which is far away from the rotating shaft 2, is provided with a positioning nut 25 used for abutting against the rotating drum 24, and the positioning nut 25 can reduce the possibility that the rotating drum 24 falls off in the rotating process. When rotating shaft 2, drum 24 reduces friction between the palm and the crank, reducing the possibility of injury to the operator.

Referring to fig. 2 and 4, an opening 13 is formed on the cylindrical surface of the winding box 1 along the length direction thereof, a measuring unit 3 is mounted on the winding box 1 near the opening 13, and the measuring unit 3 includes a measuring string 31, and a reel 32 and a counter 33 rotatably mounted at the opening 13 for winding the measuring string 31.

It installs axle 4 that slides to be close to opening 13 department rotation at rolling box 1, and axle 4 that slides is a cylindric long member, and axle 4 that slides can adopt the cylinder steel preparation, and the axis of revolution of axle 4 and the axis of revolution of pivot 2 are parallel to each other, is provided with a plurality of anti-skidding teeth 41 along its length direction on the outer face of cylinder 4 that slides, and anti-skidding tooth 41 is rectangular form component, and anti-skidding tooth 41 can adopt the billet preparation, and anti-skidding tooth 41 and axle 4 that slides can adopt integrated into one piece or welded fastening.

The counter 33 is installed outside the winding box 1, and the counter 33 may be a mechanical counter having a zero clearing function, which is commercially available, and the counter 33 is connected to one end of the sliding shaft 4.

Reel 32 slides and installs on slip axle 4, reel 32 is a discoid wheel, a annular has been seted up on its face of cylinder, measuring rope 31 can adopt the nylon rope preparation of appropriate length, one end is fixed in pivot 2, and wind in pivot 2 and establish the multiturn, with measuring rope 31 rolling as far as on pivot 2, measuring rope 31 is around establishing in reel 32's annular simultaneously, measuring rope 31 is at least around establishing the round in the annular, and measuring rope 31 stretches out opening 13 and forms the free end.

When the measuring cord 31 is released, the reel 32 is rotated by the measuring cord, and the reel 32 is provided with the counter 33 by the slip shaft 4, so that the counter 33 can count the number of rotations of the reel 32. When the measuring rope 31 is wound or released, the winding wheel 32 can play a role in guiding the direction, the possibility that the measuring rope 31 is wound and knotted on the rotating shaft 2 is reduced, and the device is more reliable.

Be connected with a couple at the free end of measuring rope 31, it has a plummet 5 to articulate on the couple, and plummet 5 can be bought through market, and when measuring the height of bridge, plummet 5 can be so that the release process of measuring rope 31 is more smooth and easy, can reduce the crooked volume of measuring rope 31 because of the windage produces simultaneously.

A handle 14 is arranged on one end face of the winding box 1, the handle 14 can be purchased in the market, and the handle 14 can be fixed on one side of the winding box 1 far away from the crank 23 by screws. The handle 14 facilitates access to the device while allowing for more convenient handling of the device when the crank 23 is turned.

The application discloses bridge height measuring device's implementation principle does: when the height of the bridge needs to be measured, the device is moved to a measuring position, the plumb bob 5 is hung at the free end of the measuring rope 31, the counter 33 is cleared, and the measuring rope 31 is released to the bottom of the bridge. During the process of releasing the measuring rope 31, the measuring rope 31 drives the reel 32 to rotate, the reel 32 drives the counter 33 through the sliding shaft 4, the counter 33 records the rotating number of turns of the reel 32, and the number of turns displayed by the counter is multiplied by the circumference of the annular groove of the reel 32 to obtain the measured value of the height of the bridge.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A bridge height measuring device is characterized in that: the device comprises a winding box (1), wherein a rotating shaft (2) is rotatably arranged in the middle of the winding box (1), an opening (13) is formed in the side surface of the winding box (1), a measuring component (3) is arranged at the opening (13), the measuring component (3) comprises a measuring rope (31) wound on the rotating shaft (2), and one end of the measuring rope (31) is fixed on the rotating shaft (2); a winding wheel (32) is rotatably mounted in the winding box (1), the other end of the measuring rope (31) is wound on the winding wheel (32) and extends out of the opening (13) to form a free end, and the free end of the measuring rope (31) is connected with a plumb bob (5); a counter (33) is mounted on the outer side of the winding box (1), and the counter (33) is connected with a winding wheel (32).

2. A bridge height measuring device according to claim 1, wherein: the two ends of the rotating shaft (2) extend out of the two side faces of the coiling box (1), the two ends of the rotating shaft (2) extending out of the coiling box (1) are respectively provided with a clamping groove (21), and a shaft check ring (22) is clamped in the clamping grooves (21) respectively.

3. A bridge height measuring device according to claim 1, wherein: a crank (23) is installed at one end of the rotating shaft (2), and a rotating drum (24) is rotatably installed on the crank (23).

4. A bridge height measuring device according to claim 1, wherein: a sliding shaft (4) is rotatably arranged at the position close to the opening (13) of the winding box (1), the rotating axis of the sliding shaft (4) is parallel to the rotating axis of the rotating shaft (2), and anti-skidding teeth (41) are arranged on the sliding shaft (4) along the length direction of the sliding shaft; a sliding hole is formed in the middle of the reel (32), and the sliding hole is a through hole matched with the sliding shaft (4) and the anti-sliding teeth (41); the sliding shaft (4) is connected with a counter (33).

5. A bridge height measuring device according to claim 1, wherein: a handle (14) is arranged on the outer side of the rolling box (1).