Pavement flatness detection device

Abstract

The utility model provides a pavement flatness detection device, which relates to the technical field of measuring instruments and comprises a first track plate, a second track plate, a rotating plate, a lever meter, a second limiting pin and a clamping sleeve. Hinges are hinged between the first track plates and the second track plates, and pulleys are rotationally connected to the ends, away from the hinges, of the first track plates and the second track plates respectively; a connecting plate is fixedly connected between the first track plates, and a first push rod is fixedly connected to the upper portion of the connecting plate in the backward inclination direction. The roller rolls on the ground to pry the third contact plate to support the contact of the lever meter, and the lever meter is used for recording the road surface height change of the measured road section from one end to the other end in the track of the first track plate and the second track plate, so that the road surface flatness information is obtained, and the record is continuous; the defect that large errors are generated due to the fact that a three-meter ruler is adopted for fixed-point measurement in a traditional method is overcome; the problem that an existing pavement flatness detection method is large in measurement result error is solved.

Description

Technical Field

[0001] This utility model belongs to the field of measuring instrument technology, and more specifically, it relates to a road surface smoothness detection device. Background Technology

[0002] Road surface smoothness refers to the deviation of longitudinal unevenness on the road surface. It is an important indicator for evaluating road surface quality and accepting road construction. The smoothness of the road surface is usually tested by using a three-meter straightedge, wedge gauge, tape measure and chalk.

[0003] The three-meter straightedge method is suitable for determining the smoothness of each layer of compacted pavement surface, and it is also suitable for detecting the construction smoothness of the subgrade surface after it has been formed, making it widely applicable. However, the three-meter straightedge method requires manual visual estimation of the largest joint between the three-meter straightedge and the ground. At multiple suspected joint locations, a feeler gauge is used to obtain the average gap width at each joint, and then the smoothness of the pavement section is calculated. This method not only results in a large error in the detection results but also requires a significant amount of physical exertion from the measurer. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a road surface smoothness detection device to solve the problem of large measurement errors in existing road surface smoothness detection methods.

[0005] This utility model provides a road surface smoothness detection device, which is achieved by the following specific technical means:

[0006] A road surface smoothness testing device includes a first track plate, a second track plate, a rotating plate, a lever gauge, a second limiting pin, and a retaining sleeve. There are two sets of the first and second track plates, hinged together, with pulleys rotatably connected to the ends of each track plate away from the hinges. A connecting plate is fixedly connected between the first track plates, and a first push rod is fixedly connected above the connecting plate in a backward tilting direction. A groove is formed on the second track plate, into which a fixing frame is inserted, and the second track plates are temporarily fixedly connected by the fixing frame. A track is formed between the first and second track plates, with a slider slidably connected within the track. A testing mechanism is provided at the bottom of the slider. The testing mechanism includes a fixing plate, with a support plate fixedly connected to the bottom of the fixing plate. The other end of the support plate is rotatably connected to a portion of the rotating plate near the center. A roller is provided at one end of the rotating plate, and a sleeve is rotatably connected to the other end. A first contact plate is fixedly connected above the sleeve, horizontally positioned and tightly against a second contact plate. A push rod is provided above the second contact plate, and a third contact plate is provided above the push rod, contacting the contacts of the lever gauge.

[0007] Further, the first pushing rod upper end penetrates the second pushing rod, and both sides penetrate the first limiting pin at the same time, the second pushing rod is hollow inside, and the second pushing rod upper end is provided with a handle.

[0008] Further, the first track plate and the second track plate are provided with pin holes at the same distance close to the hinge, and the second limiting pin is inserted into the pin hole in the disassembled state.

[0009] Further, the first track plate and the rear pulley are provided with an L-shaped supporting frame, one end of the supporting frame is provided with an anti-skid plate, the other end penetrates a supporting rod, the other end of the supporting rod is also provided with an anti-skid plate, and the anti-skid surfaces of the two anti-skid plates are both downward.

[0010] Further, the rotating plate is fixed with a second spring on the side close to the sleeve, and the other end of the second spring is fixedly connected to the bottom of the fixed plate.

[0011] Further, the pushing rod is sleeved with a first spring, the upper end of the first spring abuts against an L-shaped limiting plate, the upper end of the limiting plate is fixedly connected to the fixed plate, and the limiting plate is fixedly supported as a lever surface through the fixed support.

[0012] Further, after the clamping sleeve is clamped between the second contact plate and the limiting plate, the roller is lifted relative to the original state.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、The first track plate and the second track plate are hingedly connected through the hinge, so that the two can be folded conveniently, the first pushing rod can be accommodated in the second pushing rod, and thus the size of the detection device can be reduced, so that the detection device is convenient to store and carry.

[0015] 2、The roller rolls on the ground to pry the third contact plate supporting lever surface contact, the lever surface records the road surface height change from one end to the other end in the track of the first track plate and the second track plate, so that the road surface flatness information is obtained, and the record is continuous, and the defect that the traditional method adopts three-meter ruler fixed-point measurement to produce larger error is avoided. DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a disassembled schematic diagram of the utility model.

[0018] Figure 3 It is a partial structure schematic diagram of the utility model.

[0019] Figure 4It is the structural schematic view of the detection mechanism of the utility model.

[0020] Figure 5 It is the structural schematic view of the detection mechanism of the utility model Figure 2 It is the local enlarged view of A place in the middle.

[0021] In the figure, the corresponding relation of component name and figure number is:

[0022] 1, first track board;2, second track board;3, hinge;4, pulley;5, coupling plate;6, first push rod;7, second push rod;8, first limit pin;9, handle;10, support frame;11, non-slip plate;12, support rod;13, fixed frame;14, sliding block;15, fixed plate;16, support plate;17, rotating plate;18, roller;19, sleeve;20, first contact plate;21, second contact plate;22, push rod;23, first spring;24, limit plate;25, fixed support;26, lever table;27, third contact plate;28, second limit pin;29, second spring;30, clamping sleeve. DETAILED DESCRIPTION

[0023] The embodiment of the utility model is further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0024] Example:

[0025] As shown in the accompanying Figure 1 to the accompanying Figure 5 As shown:

[0026] The utility model provides a kind of road flatness detection device, including first track board 1, second track board 2, rotating plate 17, lever table 26, second limit pin 28 and sleeve 30;First track board 1 and second track board 2 each two groups, hinged with hinge 3 between the two, and the two are each rotationally connected with pulley 4 at the end away from hinge 3;First track board 1 between fixedly connected with connecting plate 5, first push rod 6 is fixedly connected in rear inclination direction above connecting plate 5;Second track board 2 is provided with embedding groove, embedding groove is inserted with fixed frame 13, and second track board 2 is temporarily fixedly connected by fixed frame 13;Track is provided between first track board 1 and second track board 2, and slidingly connected with sliding block 14 in track, and the bottom of sliding block 14 is provided with detection mechanism, and detection mechanism includes fixed plate 15, and the bottom of fixed plate 15 is fixedly connected with branch plate 16, and the other end of branch plate 16 is rotationally connected at the part close to middle of rotating plate 17, and one end of rotating plate 17 is provided with gyro wheel 18, and the other end is rotationally connected with sleeve 19, and first contact plate 20 is fixedly connected above sleeve 19, and first contact plate 20 is horizontal and close to second contact plate 21 above, and push rod 22 is provided above second contact plate 21, and third contact plate 27 is provided above push rod 22, and the contact of third contact plate 27 is above the contact of lever table 26.

[0027] As shown in Figure 1 and Figure 3 , first push rod 6 upper end is inserted into second push rod 7, and both sides are inserted into first limit pin 8 simultaneously, and the inside of second push rod 7 is hollow, and the upper end of second push rod 7 is provided with handle 9;Hold handle 9 and push detection device forward;First push rod 6 can be retracted into the inside of second push rod 7, and both are limited by first limit pin 8 again, as shown in Figure 2 .

[0028] As shown in Figure 2 , first track board 1 and second track board 2 are provided with pin hole on the side close to hinge 3 at the same distance close to hinge 3, and second limit pin 28 is inserted into pin hole in disassembled state;Detection mechanism is retracted into the track of first track board 1 in disassembled state, and second track board 2 is folded around hinge 3, and second limit pin 28 is inserted into pin hole to limit detection mechanism in first track board 1.

[0029] As shown in Figure 1 , first track board 1 and rear pulley 4 are inserted with L-shaped support frame 10, support frame 10 one end is provided with antiskid plate 11, the other end is inserted with support rod 12, the other end of support rod 12 is also provided with antiskid plate 11, and the antiskid surface of two antiskid plates 11 is all towards downwards;Support frame 10 and support rod 12 provide support to detection device during detection process;Antiskid plate 11 is arranged to generate friction between ground to avoid moving detection mechanism in first track board 1 and second track board 2 to drive detection mechanism to move as a whole.

[0030] Wherein, as shown in Figure 4 The second spring 29 is fixed on the rotating plate 17 on the side close to the sleeve 19, the second spring 29 is in a stretched state, and the other end of the second spring 29 is fixedly connected to the bottom of the fixed plate 15; the first spring 23 is sleeved on the push rod 22, the upper end of the first spring 23 abuts against the L-shaped limiting plate 24, the first spring 23 is in a compressed state, the upper end of the limiting plate 24 is fixedly connected to the fixed plate 15, and the limiting plate 24 is fixedly supported by the fixed support 25 to form a lever table 26; the third contact plate 27 supporting the lever table 26 is supported by the rolling wheel 18 rolling on the ground to be actuated, and the height change of the road surface of the measured road section is recorded by the lever table 26.

[0031] Wherein, as shown in Figure 4 After the sleeve 30 is clamped between the second contact plate 21 and the limiting plate 24, the rolling wheel 18 is lifted relative to the original state; when the detection device is moved at a distance, the sleeve 30 needs to be clamped between the second contact plate 21 and the limiting plate 24, so that the rolling wheel 18 is lifted and separated from the ground, and the ground fluctuation is avoided to cause the third contact plate 27 to fluctuate greatly, which can affect the measurement accuracy of the lever table 26.

[0032] The specific use mode and effect of the embodiment are as follows:

[0033] In the utility model, the handle 9 is held to push the detection device to the measured road section through the first push rod 6 and the second push rod 7; the detection device is supported through the supporting frame 10 and the supporting rod 12; the detection mechanism is slid from one end of the track to the other end in the first track plate 1 and the second track plate 2, in the process, the rolling wheel 18 rolls on the ground and closely adheres to the ground under the action of the pulling force of the second spring 29, and the other end of the rotating plate 17 is connected to the first contact plate 20 through the sleeve 19 and moves up and down relative to the fixed plate 15 with the height change of the ground, the second contact plate 21, the push rod 22 and the third contact plate 27 are synchronously actuated, the fluctuation of the third contact plate 27 is detected by the lever table 26 through the contact, and the height change of the road surface of the road section from one end to the other end in the track of the first track plate 1 and the second track plate 2 is recorded, so that the unevenness of the road surface of the road section is obtained.

[0034] The parts not described in the utility model are the known technology of those skilled in the art.

Claims

1. A road surface flatness detection device characterized by comprising: The utility model provides a kind of automatic door, including first track plate (1), second track plate (2), rotating plate (17), lever table (26), second limit pin (28) and sleeve (30);The first track plate (1) and second track plate (2) are two groups respectively, hinged joint is hinged (3) between the two, and the two are respectively rotatably connected with pulley (4) at the end away from hinged (3);First push rod (6) is fixedly connected on the upper side of connecting plate (5) in the backward inclination direction between the first track plate (1);Second track plate (2) is provided with embedding groove, and fixed frame (13) is clamped in embedding groove, and second track plate (2) is temporarily fixedly connected by fixed frame (13);Track is opened between the first track plate (1) and second track plate (2), and slidingly connected with sliding block (14) in track, and the bottom of sliding block (14) is provided with detection mechanism, and detection mechanism includes fixed plate (15), and the bottom of fixed plate (15) is fixedly connected with support plate (16), and the other end of support plate (16) is rotatably connected in the part close to middle of rotating plate (17), and one end of rotating plate (17) is provided with gyro wheel (18), and the other end is rotatably connected with sleeve (19), and first contact plate (20) is fixedly connected on the upper side of sleeve (19), and first contact plate (20) is horizontally and closely attached to second contact plate (21) on the upper side, and push rod (22) is provided on the upper side of second contact plate (21), and third contact plate (27) is provided on the upper side of push rod (22), and third contact plate (27) is contacted with the contact of lever table (26) on the upper side.

2. The road surface flatness detection device according to claim 1, wherein Second push rod (7) is inserted into first push rod (6) on the upper end, and both sides are inserted into first limit pin (8) simultaneously, and the inside of second push rod (7) is hollow, and handle (9) is provided on the upper end of second push rod (7).

3. The road surface flatness detection device of claim 1, wherein: The first track plate (1) and second track plate (2) are provided with pin hole on the side close to hinged (3) at the same distance close to hinged (3), and second limit pin (28) is inserted into pin hole in disassembled state.

4. The road surface flatness detection device of claim 1, wherein: L-shaped support frame (10) is inserted into first track plate (1) and pulley (4) behind, and anti-skid plate (11) is provided on one end of support frame (10), and support rod (12) is inserted into the other end, and anti-skid plate (11) is also provided on the other end of support rod (12), and the anti-skid surface of two anti-skid plates (11) is all towards downwards.

5. The road surface roughness detection device of claim 1, wherein: Second spring (29) is fixed on the side close to sleeve (19) on rotating plate (17), and the other end of second spring (29) is fixedly connected on the bottom of fixed plate (15).

6. The road surface flatness detection device of claim 1, wherein: First spring (23) is sleeved on push rod (22), and the upper end of first spring (23) is against L-shaped limit plate (24), and limit plate (24) is fixedly connected on the upper end of fixed plate (15), and limit plate (24) supports lever table (26) through fixed support (25).

7. The road surface flatness detection device of claim 1, wherein: After sleeve (30) is clamped between second contact plate (21) and limit plate (24), gyro wheel (18) is lifted relative to original state.

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