CN210797216U - Road surface flatness measuring device - Google Patents

Abstract

The utility model discloses a pavement surface flatness measuring device, which relates to the technical field of pavement detection. A guide rail arranged horizontally along the length direction is arranged on the side wall, and a slider is slidably connected to the guide rail; a sleeve is fixedly connected to the slider, and a movable measuring rod is inserted into the sleeve, and the measuring rod is The upper end of the scribing pen is provided with a scribing pen, the upper end of the beam is fixedly connected with a flat plate for placing the tracing paper, the edge of the flat plate is provided with a clip for clamping the tracing paper, and the nib of the scribing pen abuts on the flat plate. Surface of tracing paper. The utility model can measure the smoothness of the road surface more accurately; the operation is simple, and there is no need for personnel to lie on the ground to measure with a plug gauge, thereby improving the measurement efficiency.

Description

A device for measuring the smoothness of pavement surface

Technical field:

The utility model relates to the technical field of road surface detection, in particular to a road surface flatness measuring device.

Background technique:

The road surface smoothness refers to the deviation value of the amount of unevenness in the longitudinal direction of the road surface. Pavement smoothness is an important index in pavement evaluation and pavement construction acceptance, which mainly reflects the smoothness of the profile curve of the pavement longitudinal section. When the profile curve of the longitudinal section of the road surface is relatively smooth, it means that the road surface is relatively smooth, or the smoothness is relatively good; otherwise, the smoothness is relatively poor. A good road requires a good level of road surface. Uneven road surfaces can affect the speed and safety of driving, smooth driving and passenger comfort, while increasing road damage and vehicle wear. Therefore, the smoothness of the road surface needs to be strictly controlled.

In the existing pavement inspection process, a 3-meter ruler is generally used to measure the smoothness of the pavement. When measuring, the side of the ruler is placed on the ground, and the largest gap is visually inspected, and then a feeler gauge is used to insert the gap to measure visually. Gap height, this measurement method measures the maximum gap, and cannot measure the change trend of the gap on the ground, and the result of visual measurement is inaccurate and the measurement efficiency is low.

Utility model content:

The purpose of the utility model is to provide a pavement surface flatness measuring device, which solves the technical problems of inaccurate and incomplete measurement and low measurement efficiency of the existing pavement flatness measurement.

In order to achieve the above object, the present invention adopts the following technical solutions to realize:

A pavement surface flatness measuring device comprises a cross beam, legs are fixedly connected below both ends of the cross beam, the legs are arranged in an inverted V shape, and the side walls of the cross beam are provided with horizontally arranged lengthwise direction. a guide rail, a slider is slidably connected to the guide rail, a dovetail groove is arranged on the slider, a dovetail protrusion is arranged on the guide rail, and the dovetail groove ferrule is slidably matched on the dovetail protrusion; the slider A sleeve is fixedly connected to the upper part, and a movable measuring rod is inserted into the sleeve. The upper end of the measuring rod is provided with a scribing pen, and the upper end of the beam is fixedly connected with a flat plate for placing tracing paper. The edge is provided with a clip for clamping the tracing paper, and the tip of the scribing pen abuts the surface of the tracing paper on the tablet.

Further, a fixing cylinder is fixedly connected to the upper end of the measuring rod, a pen cover is inserted into the solid cylinder, the outer wall of the pen cover is provided with a protruding fixing ring, and a compression spring is arranged in the fixing cylinder. The spring is sleeved on the outer ring of the pen cover, one end of the compression spring is pressed against the inner end of the fixing cylinder, and the other end of the compression spring is pressed against the side wall of the fixing ring to squeeze the pen cover to the side of the flat plate, the marking pen Interspersed in the pen sleeve, one side of the pen sleeve is provided with a threaded hole, the threaded hole is provided with a threaded first locking bolt, the end of the first locking bolt is against the side wall of the marking pen and The scribing pen clamps.

Further, the outer end of the first locking bolt is provided with a butterfly-shaped first rotating lug.

Further, a threaded hole is arranged on the side wall of the sleeve, a second locking bolt is arranged in the threaded hole, and a nut of the second locking bolt is arranged for screwing the second locking bolt. The butterfly-shaped second rotating lug.

Further, the lower end of the measuring rod is hinged with a roller.

The utility model provides a pavement surface flatness measuring device, which has the following beneficial effects: a sliding block capable of sliding movement is arranged on the beam, and the measuring rod is sheathed in a sleeve on the sliding block, and the upper end of the measuring rod is located at the upper end of the measuring rod. Set the marking pen. When using it, place the device on the road surface, move the measuring rod so that the lower end of the measuring rod is in contact with the ground, move the slider in parallel, and the marking pen moves up and down with the ups and downs of the ground, so that the marking pen is on the tablet. The cross-section line of the ground is traced on the tracing paper on the top. According to the cross-section line, the undulation of the road surface at the measurement site can be more clearly measured, and the flatness of the road surface can be measured more accurately by measuring the height difference of the cross-section line. The ground is measured with a plug gauge, which improves the measurement efficiency.

Description of drawings:

The specific embodiments of the present utility model are described in further detail below in conjunction with the accompanying drawings:

Fig. 1 is the front view structure schematic diagram of a kind of pavement surface flatness measuring device provided by the utility model;

Fig. 2 is the side view sectional structure schematic diagram of a kind of pavement surface flatness measuring device provided by the utility model;

FIG. 3 is a schematic diagram of the partial structure of part A in FIG. 2 .

Description of the symbols in the figure: 1-beam, 2-leg, 3-guide rail, 4-slider, 41-sleeve, 42-second locking bolt, 421-second rotating lug, 5-measuring rod, 51 -Fixing barrel, 52-roller, 6-scriber, 7-flat, 71-clip, 8-pen holder, 81-fixing ring, 82-first locking bolt, 821-first turning lug, 9-compression spring.

Detailed ways:

It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not All examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up-down-left-right-front-rear...) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly, and the connection may be a direct connection or an indirect connection.

As shown in Fig. 1, Fig. 2 and Fig. 3, a pavement surface flatness measuring device includes a beam 1, and legs 2 are fixedly connected below both ends of the beam 1, and the legs 2 are arranged in an inverted V shape , the side wall of the beam 1 is provided with a guide rail 3 arranged horizontally in the length direction, the guide rail 3 is slidably connected with a slider 4, the slider 4 is provided with a dovetail groove, and the guide rail 3 is provided with The dovetail bulge, the dovetail groove ferrule is slidably fitted on the dovetail bulge; the sliding block 4 is fixedly connected with a sleeve 41, and a movable measuring rod 5 is inserted in the sleeve 41, and the measuring rod 5 The upper end is provided with a marking pen 6, the upper end of the beam 1 is fixedly connected with a flat plate 7 for placing the tracing paper, and the edge of the flat plate 7 is provided with a clip 71 for clamping the tracing paper. The tip of the pen rests on the surface of the tracing paper on the tablet.

By adopting the above technical solution, the sliding block 4 is provided on the beam 1, the measuring rod 5 is put into the sleeve 41 on the sliding block 4, and the scribing pen 6 is set on the upper end of the measuring rod 5. , place the device on the road, move the measuring rod 5 so that the lower end of the measuring rod 5 is in contact with the ground, move the slider 4 in parallel, and the marking pen 6 moves up and down with the ups and downs of the ground, so that the marking pen 6 is on the flat plate 7 The cross-section line of the ground is traced on the tracing paper. According to the cross-section line, the undulation of the road surface at the measurement site can be more clearly measured, and the flatness of the road surface can be measured more accurately by measuring the height difference of the cross-section line; the operation is simple, and there is no need for personnel to lie on the ground. Measuring with a plug gauge improves the measuring efficiency.

Specifically, a fixing cylinder 51 is fixedly connected to the upper end of the measuring rod 5 , a pen sleeve 8 is inserted through the solid cylinder 51 , a protruding fixing ring 81 is provided on the outer wall of the pen sleeve 8 , and the fixing cylinder 51 is There is a compression spring 9, the compression spring 9 is sleeved on the outer ring of the pen sleeve 8, one end of the compression spring 9 is pressed against the inner end of the fixing cylinder 51, and the other end of the compression spring 9 is pressed against the side wall of the fixing ring 81 Squeeze the pen cover 8 to the side of the flat plate 7, the marking pen 6 is inserted into the pen cover 8, one side of the pen cover 8 is provided with a threaded hole, and the threaded hole is provided with a threaded first locking bolt 82 , the end of the first locking bolt 82 abuts the side wall of the scriber 6 and clamps the scriber 6 . Through the cooperation of the first locking bolt 82 with the pen cover 8, the marking pen 6 can be clamped, and can be detached and replaced; the compression spring 9 can keep the marking pen 6 against the tracing paper on the tablet 7, so as to prevent the tablet 7 from being damaged. Flattening causes the drawn line to break.

Specifically, the outer end of the first locking bolt 82 is provided with a butterfly-shaped first rotating lug 821 . The first locking bolt 82 can be easily rotated by screwing the first rotating lug plate 821, and the marking pen 6 can be easily disassembled.

Specifically, the side wall of the sleeve 41 is provided with a threaded hole, the threaded hole is provided with a second locking bolt 42, and the nut of the second locking bolt 42 is provided with a second locking bolt for screwing the second The butterfly-shaped second rotating lug 421 of the locking bolt 42 is secured. The measuring rod 5 can be fixed by twisting the second locking bolt 42 , and can be fixed when the measuring rod 5 is not measuring, so as to prevent the measuring rod 5 from moving up and down, and facilitate transfer and transportation.

Specifically, the lower end of the measuring rod 5 is hinged with a roller 52 . The measuring rod 5 can be moved conveniently, and the roller 52 can more conveniently contact the ground, thereby improving the measuring accuracy.

The basic principles, main features and features of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention The new model will also have various changes and improvements, which all fall within the scope of the claimed invention. The scope of protection of the present invention is determined by the appended claims and their equivalents.

Claims (5)

1. A pavement surface flatness measuring device, characterized in that: it comprises a beam (1), and legs (2) are fixedly connected below both ends of the beam (1), and the legs (2) are inverted V type arrangement, the side wall of the beam (1) is provided with a guide rail (3) arranged horizontally in the length direction, the guide rail (3) is slidably connected with a sliding block (4), and the sliding block (4) is on the sliding block (4). A dovetail groove is provided, a dovetail protrusion is provided on the guide rail (3), and the dovetail groove is clamped to slide and fit on the dovetail protrusion; the sliding block (4) is fixedly connected with a sleeve (41), so A movable measuring rod (5) is inserted into the sleeve (41), the upper end of the measuring rod (5) is provided with a marking pen (6), and the upper end of the beam (1) is fixedly connected with a tracing paper for placing the tracing paper. The flat plate (7), the edge of the flat plate (7) is provided with a clip (71) for clamping the tracing paper, and the tip of the scribing pen (6) is pressed against the surface of the tracing paper on the flat plate. 2. A road surface flatness measuring device according to claim 1, characterized in that: the upper end of the measuring rod (5) is fixedly connected with a fixing cylinder (51), and the fixing cylinder (51) is interspersed with a fixing cylinder (51). The pen cover (8), the outer wall of the pen cover (8) is provided with a protruding fixing ring (81), the fixing cylinder (51) is provided with a compression spring (9), and the compression spring (9) is sleeved on the The outer ring of the pen cover (8), one end of the compression spring (9) is pressed against the inner end of the fixing cylinder (51), and the other end of the compression spring (9) is against the side wall of the fixing ring (81) to hold the pen cover (81). 8) Squeeze to the side of the flat plate (7), the marking pen (6) is inserted into the pen cover (8), one side of the pen cover (8) is provided with a threaded hole, and the threaded hole is provided with a thread The matched first locking bolt (82), the end of the first locking bolt (82) abuts the side wall of the marking pen (6) and clamps the marking pen (6). 3 . The road surface flatness measuring device according to claim 2 , wherein the outer end of the first locking bolt ( 82 ) is provided with a butterfly-shaped first rotating lug ( 821 ). 4 . 4. A pavement surface flatness measuring device according to claim 1, wherein a threaded hole is arranged on the side wall of the sleeve (41), and a second locking bolt is arranged in the threaded hole (42), the nut of the second locking bolt (42) is provided with a butterfly-shaped second rotating lug plate (421) for rotating the second locking bolt (42). 5 . The road surface flatness measuring device according to claim 1 , wherein a roller ( 52 ) is hingedly connected to the lower end of the measuring rod ( 5 ). 6 .

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