A flatness detection device for road and bridge engineering construction

Abstract

The utility model discloses a kind of flatness detection devices of road bridge engineering construction, including ruler body and U-shaped holder, the quantity of ruler body is three sections, the ruler body of three sections is adjacently positioned with U-shaped holder, and the U-shaped holder is through dismounting assembly and can be detachably combined together with the ruler body of adjacent. Beneficial effects are that: the utility model is provided with three sections of ruler body, and the ruler body of three sections is adjacently positioned with U-shaped holder, and U-shaped holder is through dismounting assembly and can be detachably combined together with the ruler body of adjacent, to this, by means of U-shaped holder, three sections of ruler body is flatly spliced together, and three sections of ruler body is formed into 3m ruler to carry out pavement flatness detection, and by means of the mode that three sections of ruler body is separated from U-shaped holder, the disassembly operation of 3m ruler can be realized, so that carrying and storage are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tools for road and bridge engineering construction, specifically to a flatness detection device for road and bridge engineering construction. Background Technology

[0002] In road and bridge construction, flatness is one of the key indicators for measuring project quality. It not only affects the aesthetics of roads and bridges, but also has a profound impact on driving safety, comfort, and structural durability.

[0003] In existing technologies, road surface smoothness testing typically involves using a 3-meter straightedge and feeler gauge or depth gauge for measurement. The specific steps are as follows:

[0004] 1. Select test section and location: Select test section according to the specifications. Generally, the wheel tracks on one side of the driving lane are used as the standard position for continuous measurement. The measurement interval is generally 2 points every 200 meters, and each point is continuously measured for 10 feet.

[0005] II. Testing Procedure: Place the ruler: After determining the testing direction, place the 3-meter ruler on the road surface at the testing location. Determine the maximum gap position: Visually inspect the gap between the bottom of the 3-meter ruler and the road surface to find the position of the maximum gap. Measure the maximum gap height: Insert a feeler gauge into the gap and measure the height of the maximum gap; or use a depth gauge to measure the depth from the top surface of the ruler to the ground at the maximum gap position. Subtract the ruler height from this depth to obtain the height of the maximum gap at the testing point, accurate to 0.2mm.

[0006] III. Result Calculation: Single Pole Inspection: The maximum gap between a 3-meter straightedge and the road surface is taken as the measurement result. Continuous Measurement: When measuring 10 straightedges consecutively, first determine whether each measurement value is qualified, calculate the qualified percentage according to the requirements, and calculate the average of the 10 measurement values.

[0007] As for the 3m ruler used specifically, it usually adopts a one-piece design, and the overall length is too long, which makes it very inconvenient to carry or store. Utility Model Content

[0008] The purpose of this utility model is to provide a flatness detection device for road and bridge engineering construction in order to solve the above-mentioned problems, as detailed below.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] This utility model provides a flatness testing device for road and bridge engineering construction, including a ruler body and a U-shaped bracket. The ruler body consists of three sections, and each of the three sections is provided with a U-shaped bracket at an adjacent position. The U-shaped brackets can detachably assemble adjacent ruler bodies together through a disassembly and assembly assembly, so as to limit and fix the ruler body to a horizontal use state and a vertical storage state by means of the disassembly and assembly assembly.

[0011] Preferably, the length of the ruler body is 1m.

[0012] Preferably, the cross-sectional shape of the U-shaped holder along the longitudinal vertical plane is an inverted U-shape, and when the ruler body is in a flat state and is combined with the U-shaped holder through the disassembly assembly, the bottom surface of the ruler body is not higher than the bottom surface of the U-shaped holder.

[0013] Preferably, the top surface of the U-shaped card holder is fixedly equipped with a handle for easy gripping, and the handle is covered with an anti-slip sleeve.

[0014] Preferably, the assembly is as follows: the front and rear ends of the U-shaped bracket are each vertically provided with three guide slots, and the guide slots at the front and rear positions are respectively longitudinally aligned. The bottom ends of the guide slots are all open, and the guide slots are all through slots in the longitudinal direction. The two ends of the front and rear ends of the ruler body are each fixed with guide studs in the longitudinal direction. When the three sections of the ruler body are connected in a horizontal manner, the guide studs of two adjacent ruler bodies that are close to each other pass through the guide slots of the corresponding U-shaped bracket in a sliding fit. The parts of the guide studs that extend out of the corresponding guide slots are coaxially engaged with locking nuts, and the locking nuts are all pressed against the outer surface of the corresponding U-shaped bracket.

[0015] Preferably, when the ruler body is in a flat position, the end faces of adjacent ruler bodies are in close contact with each other, and the guide studs corresponding to the two ruler bodies are respectively in sliding engagement with the guide slots at the edge and middle positions of the U-shaped card seat.

[0016] Preferably, when the ruler body is in a vertical position, the top surface of the ruler body is in contact with the inner top surface of the U-shaped card holder.

[0017] Preferably, the centerline spacing between adjacent guide slots matches the vertical dimension of the ruler body when it is placed flat.

[0018] Preferably, the guide slots are all vertically arranged waist-shaped slots, and the upper section of the guide slot is an arc slot and the lower section is a rectangular straight slot.

[0019] Preferably, the outer ends of the guide studs are all coaxially mounted with anti-loosening heads, and the locking nuts are all hand-tightened knurled nuts.

[0020] The road and bridge engineering flatness testing device described above, in practical use, comprises three sections of the ruler body, with U-shaped brackets positioned adjacent to each section. These U-shaped brackets, along with a disassembly and assembly assembly, allow for the detachable assembly of adjacent ruler sections. This method of smoothly connecting the three ruler sections together enables the use of a single 3m ruler for road surface flatness testing. Furthermore, separating the three ruler sections from the U-shaped brackets allows for the disassembly of the entire 3m ruler. For easy carrying and storage, when the ruler body is in a flat position, the guide stud slides into the guide slot by sliding the ruler body and the U-shaped bracket from bottom to top, and the locking nut is tightened to press it against the outer surface of the U-shaped bracket. This allows the ruler body and the U-shaped bracket to be quickly assembled and kept flat. Simultaneously, simply loosening the locking nut allows the guide stud to slide out of the bottom of the guide slot from top to bottom, thus separating the ruler body and the U-shaped bracket. The assembly and disassembly of the ruler body and the U-shaped bracket are simple and easy to implement, thus facilitating the storage of the ruler body. The ruler is used in a horizontal position for road surface smoothness testing, and it also facilitates quick separation of the ruler body from the U-shaped bracket for temporary storage. When the ruler body is in an upright position, the guide stud slides into the guide groove by sliding the ruler body and the U-shaped bracket from bottom to top, and the locking nut is tightened to press it against the outer surface of the U-shaped bracket. This allows the ruler body and the U-shaped bracket to be quickly assembled and kept in an upright position. Furthermore, simply loosening the locking nut allows the guide stud to slide from top to bottom out of the guide groove, thus separating the ruler body from the U-shaped bracket. The combination and disassembly of the ruler body and the U-shaped bracket are simple and easy to implement. This facilitates the vertical placement of the three ruler body segments and their combination with the U-shaped brackets for easy lifting, carrying, and storage. It also makes it easy to quickly separate the ruler body and the U-shaped brackets for subsequent use. When the three ruler body segments are placed vertically side by side, the two U-shaped brackets can be combined with the top and bottom of the three ruler body segments respectively. This not only ensures the stable vertical placement of the three ruler body segments with the help of the U-shaped brackets, but also allows for the proper storage of the two U-shaped brackets with the help of the three ruler body segments.

[0021] The beneficial effects are as follows: 1. This utility model is provided with a ruler body in three sections, and each of the three ruler body sections is provided with a U-shaped bracket at an adjacent position. At the same time, the U-shaped bracket can detach and combine the adjacent ruler body sections together through a disassembly and assembly component. In this way, the three ruler body sections can be straightly spliced ​​together by means of the U-shaped bracket, so that the three ruler body sections can be used to form a whole 3m ruler for road surface flatness testing. At the same time, by separating the three ruler body sections from the U-shaped bracket, the whole 3m ruler can be disassembled, which makes it convenient to carry and store.

[0022] 2. With the ruler body in a flat position, the guide stud slides into the guide slot by sliding the ruler body and the U-shaped bracket from bottom to top, and the locking nut is tightened to press it against the outer surface of the U-shaped bracket. This allows the ruler body and the U-shaped bracket to be quickly assembled together and kept flat. At the same time, by simply loosening the locking nut, the guide stud can slide from top to bottom out of the bottom of the guide slot, thus separating the ruler body and the U-shaped bracket. The assembly and disassembly of the ruler body and the U-shaped bracket are simple and easy to implement. This makes it convenient to keep the ruler body in a flat position for road surface flatness testing, and also makes it easy to quickly separate the ruler body and the U-shaped bracket for storage.

[0023] 3. With the ruler body in a vertical position, the guide stud slides into the guide slot by sliding the ruler body and the U-shaped bracket from bottom to top, and the locking nut is tightened to press it against the outer surface of the U-shaped bracket. This allows the ruler body and the U-shaped bracket to be quickly assembled together and kept in a vertical position. At the same time, by simply loosening the locking nut, the guide stud can slide down from top to bottom and disengage from the bottom of the guide slot, thus separating the ruler body and the U-shaped bracket. The assembly and disassembly of the ruler body and the U-shaped bracket are simple and easy to implement. This makes it convenient to keep the three sections of the ruler body in a vertical position and to lift, carry and store them as a whole after they are all assembled with the U-shaped bracket. It also makes it easy to quickly separate the ruler body and the U-shaped bracket for subsequent assembly and use.

[0024] 4. When the three ruler sections are placed side by side in a vertical position, the two U-shaped brackets can be combined at the top and bottom of the three ruler sections respectively. This not only helps to stabilize the three ruler sections in a vertical position, but also allows the two U-shaped brackets to be properly stored. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is an overall isometric schematic diagram of the present invention in use;

[0027] Figure 2 This is a utility model Figure 1 Enlarged view of a portion at point A;

[0028] Figure 3 This is a utility model Figure 1 A schematic diagram of the cross-section;

[0029] Figure 4 This is a utility model Figure 3 A magnified view of section B;

[0030] Figure 5 This is a utility model Figure 1 Front view diagram;

[0031] Figure 6 This is an overall isometric schematic diagram of the present invention in its stored state;

[0032] Figure 7 This is a utility model Figure 6 A magnified view of a portion at point C;

[0033] Figure 8 This is a utility model Figure 6 Left sectional view;

[0034] Figure 9 This is a utility model Figure 8 A magnified view of a portion at point D;

[0035] Figure 10 This is a utility model Figure 6 Front view diagram.

[0036] The annotations in the attached figures are explained as follows:

[0037] 1. Ruler body; 2. U-shaped bracket; 201. Anti-slip sleeve; 202. Handle; 3. Assembly / disassembly assembly; 301. Guide slot; 302. Guide stud; 303. Locking nut; 304. Anti-detachment end. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] See Figures 1-10 As shown, this utility model provides a flatness testing device for road and bridge construction, including a ruler body 1 and a U-shaped bracket 2. The ruler body 1 consists of three sections, and each of the three sections is provided with a U-shaped bracket 2 at an adjacent position. The U-shaped brackets 2 can be detachably assembled together by a disassembly and assembly assembly 3. Specifically, the disassembly and assembly assembly 3 has three vertically formed guide slots 301 on both the front and rear ends of the U-shaped bracket 2, with the guide slots 301 facing each other longitudinally. The bottom ends of the guide slots 301 are all open, and the guide slots 301 are longitudinally... All the upward-facing sections are through slots. Both ends of the front and rear faces of the ruler body 1 are longitudinally fixed with guide studs 302. When the three ruler body sections 1 are joined horizontally, the guide studs 302 of adjacent ruler body sections 1 slide through the guide grooves 301 of the corresponding U-shaped brackets 2 in a sliding fit. The portions of the guide studs 302 extending beyond the corresponding guide grooves 301 are coaxially engaged with locking nuts 303, and the locking nuts 303 are all pressed against the outer surface of the corresponding U-shaped brackets 2. The advantage of this design is that, firstly, the ruler body 1 can be fixed in a horizontal position using the disassembly assembly 3. In both the vertical storage and horizontal storage states, and with the ruler body 1 in a horizontal position, the guide stud 302 slides into the guide groove 301 by sliding the ruler body 1 and the U-shaped bracket 2 from bottom to top, and the locking nut 303 is tightened to press it against the outer surface of the U-shaped bracket 2. This allows the ruler body 1 and the U-shaped bracket 2 to be quickly assembled together and kept in a horizontal position. Furthermore, simply loosening the locking nut 303 allows the guide stud 302 to slide from top to bottom out of the guide groove 301, thus separating the ruler body 1 and the U-shaped bracket 2. The assembly and disassembly of the ruler body 1 and the U-shaped bracket 2 are simple. It is easy to implement, and when the ruler body 1 is in a vertical position, the guide stud 302 slides into the guide groove 301 by sliding the ruler body 1 and the U-shaped bracket 2 from bottom to top, and the locking nut 303 is tightened on the outer surface of the U-shaped bracket 2. This allows the ruler body 1 and the U-shaped bracket 2 to be quickly assembled together and kept in a vertical position. At the same time, by simply loosening the locking nut 303, the guide stud 302 can slide from top to bottom and disengage from the bottom of the guide groove 301, thereby separating the ruler body 1 and the U-shaped bracket 2 from each other. The assembly and disassembly of the ruler body 1 and the U-shaped bracket 2 are simple and easy to implement.

[0040] See Figures 1-10 As shown, the following optimizations have been made to this application: the length of the ruler body 1 is 1m, so that the three sections of the ruler body 1 can be connected together to be used as a whole 3m ruler. Optionally, the cross-sectional shape of the U-shaped bracket 2 along its longitudinal vertical plane is an inverted U-shape. When the ruler body 1 is in a flat position and is combined with the U-shaped bracket 2 via the disassembly assembly 3, the bottom surface of the ruler body 1 is not higher than the bottom surface of the U-shaped bracket 2, so as to prevent the bottom surface of the U-shaped bracket 2 from interfering with the normal contact of the ruler body 1 with the road surface. Further optionally, a handle 202 for easy gripping is fixedly installed on the top surface of the U-shaped bracket 2, and an anti-slip sleeve 201 is fitted around the handle 202. This arrangement facilitates the movement of the U-shaped bracket 2 and the ruler body 1 by applying force by gripping the handle 202, and also helps to prevent slippage when gripping the handle 202 with the help of the anti-slip sleeve 201.

[0041] See Figures 1-9 As shown, when the ruler body 1 is in a flat position, the end faces of adjacent ruler bodies 1 are in close contact with each other, and the guide studs 302 corresponding to the two ruler bodies 1 are respectively in sliding engagement with the guide grooves 301 at the edge and middle positions of the U-shaped bracket 2. Preferably, when the ruler body 1 is in a flat position, the top surface of the ruler body 1 is in close contact with the inner top surface of the U-shaped bracket 2. This arrangement ensures that after the ruler body 1 is engaged with the U-shaped bracket 2 and fixed by the assembly 3, the ruler body 1 is always in a flat position. Alternatively, when the ruler body 1 is in a vertical position, the top surface of the ruler body 1 is in close contact with the inner top surface of the U-shaped bracket 2, so that the U-shaped bracket 2 can stably limit and assemble the three parallel vertical ruler bodies 1 together.

[0042] See Figures 1-10 As shown, the centerline spacing between adjacent guide slots 301 matches the vertical dimension of the ruler body 1 in its flat state. This arrangement ensures that when the three ruler body sections 1 are vertically aligned side-by-side, the U-shaped bracket 2 can secure them together. Optionally, the guide slots 301 are all vertically oriented waist-shaped slots, with the upper section being an arc groove and the lower section a rectangular straight groove. This design facilitates the use of the guide slots 301 and makes them easier to machine. Further, the outer ends of the guide studs 302 are coaxially fitted with anti-loosening ends 304, and the locking nuts 303 are all hand-tightened knurled nuts. This arrangement prevents the locking nuts 303 from accidentally detaching from the outer ends of the guide studs 302 and allows for easy tightening and loosening by hand.

[0043] With the above structure, in practical use, the ruler body consists of three sections 1, each with a U-shaped bracket 2 positioned adjacent to the other. These U-shaped brackets 2, along with a disassembly / assembly assembly 3, allow for the detachable assembly of adjacent ruler sections 1. This method of seamlessly connecting the three sections 1 together enables the use of a single 3m ruler for road surface flatness testing. Furthermore, separating the three sections from the U-shaped brackets 2 allows for the disassembly of the entire 3m ruler, facilitating its carrying and storage. With the ruler body 1 in a flat position, the guide stud 302 slides into the guide groove 301 by sliding the ruler body 1 and the U-shaped bracket 2 from bottom to top, and the locking nut 303 is tightened to press it against the outer surface of the U-shaped bracket 2. This allows the ruler body 1 and the U-shaped bracket 2 to be quickly assembled together and kept in a flat position. At the same time, by simply loosening the locking nut 303, the guide stud 302 can slide from top to bottom out of the bottom of the guide groove 301, thus separating the ruler body 1 and the U-shaped bracket 2. The assembly and disassembly of the ruler body 1 and the U-shaped bracket 2 are simple and easy to implement, which facilitates keeping the ruler body 1 in a flat position for various purposes. This device is used for road surface smoothness testing and also facilitates the quick separation of the ruler body 1 and U-shaped bracket 2 for temporary storage. With the ruler body 1 in an upright position, the guide stud 302 slides into the guide groove 301 by sliding the ruler body 1 and U-shaped bracket 2 from bottom to top, and the locking nut 303 is tightened to press against the outer surface of the U-shaped bracket 2. This allows the ruler body 1 and U-shaped bracket 2 to be quickly assembled and kept in an upright position. Furthermore, simply loosening the locking nut 303 allows the guide stud 302 to slide from top to bottom out of the guide groove 301, thus separating the ruler body 1 and U-shaped bracket 2. The combination and disassembly of the ruler body 1 and the U-shaped bracket 2 are simple and easy to implement. This makes it easy to keep the three ruler body 1 in a vertical position and to lift, carry and store them as a whole after they are all combined with the U-shaped bracket 2. It also makes it easy to quickly separate the ruler body 1 and the U-shaped bracket 2 for subsequent use. Since the three ruler body 1 is kept in a vertical position side by side, the two U-shaped brackets 2 can be combined with the top and bottom of the three ruler body 1 respectively. This not only makes it possible to stabilize the three ruler body 1 in a vertical position side by side with the help of the U-shaped brackets 2, but also makes it possible to properly store the two U-shaped brackets 2 with the help of the three ruler body 1.

[0044] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A flatness testing device for road and bridge construction, comprising a ruler body (1) and a U-shaped bracket (2), characterized in that: The ruler body (1) consists of three sections. Each of the three sections of the ruler body (1) is provided with a U-shaped bracket (2) at an adjacent position. The U-shaped bracket (2) can detachably combine the adjacent ruler bodies (1) together through a disassembly and assembly assembly (3) to limit and fix the ruler body (1) to a flat use state and a vertical storage state.

2. The road and bridge engineering flatness testing device according to claim 1, characterized in that: The length of the ruler body (1) is 1m.

3. The road and bridge engineering flatness testing device according to claim 1, characterized in that: The cross-sectional shape of the U-shaped card holder (2) along the longitudinal vertical plane is an inverted U-shape. When the ruler body (1) is in a flat state and is combined with the U-shaped card holder (2) through the disassembly assembly (3), the bottom surface of the ruler body (1) is not higher than the bottom surface of the U-shaped card holder (2).

4. The road and bridge engineering flatness testing device according to claim 3, characterized in that: The top surface of each U-shaped card holder (2) is fixedly equipped with a handle (202) for easy gripping, and the outer periphery of each handle (202) is fitted with an anti-slip sleeve (201).

5. The road and bridge engineering flatness testing device according to any one of claims 1-4, characterized in that: Specifically, the assembly (3) is provided with three guide slots (301) vertically on the front and rear ends of the U-shaped card holder (2), and the guide slots (301) at the front and rear positions are respectively longitudinally aligned. The bottom ends of the guide slots (301) are all open, and the guide slots (301) are all through slots in the longitudinal direction. The two ends of the front and rear ends of the ruler body (1) are fixed with guide studs (302) in the longitudinal direction. When the three sections of the ruler body (1) are connected in a horizontal manner, the guide studs (302) of two adjacent ruler bodies (1) that are close to each other pass through the guide slots (301) of the corresponding U-shaped card holder (2) in a sliding fit. The part of the guide stud (302) that extends out of the corresponding guide slot (301) is coaxially engaged with a locking nut (303), and the locking nut (303) is pressed against the outer surface of the corresponding U-shaped card holder (2).

6. The road and bridge engineering flatness testing device according to claim 5, characterized in that: When the ruler body (1) is in a flat position, the end faces of adjacent ruler bodies (1) are in close contact with each other, and the guide studs (302) corresponding to the two ruler bodies (1) are respectively in sliding engagement with the guide slots (301) at the edge and middle positions of the U-shaped card seat (2).

7. The road and bridge engineering flatness testing device according to claim 6, characterized in that: When the ruler body (1) is in a vertical position, the top surface of the ruler body (1) is in contact with the inner top surface of the U-shaped card holder (2).

8. The road and bridge engineering flatness testing device according to claim 7, characterized in that: The centerline spacing between adjacent guide slots (301) matches the vertical dimension of the ruler body (1) in its flat position.

9. A road and bridge engineering flatness testing device according to any one of claims 6-8, characterized in that: The guide slots (301) are all vertically arranged waist-shaped slots, and the upper section of the guide slots (301) is an arc slot and the lower section is a rectangular straight slot.

10. The road and bridge engineering flatness testing device according to claim 9, characterized in that: The outer ends of the guide studs (302) are all coaxially mounted with anti-loosening heads (304), and the locking nuts (303) are all hand-tightened knurled nuts.

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