A flatness measuring device for highway bridge field detection is convenient to store
By designing an adjustable-length movable seat and omnidirectional wheels, the problem of existing devices being unable to adapt to different bridge widths was solved, achieving efficient and convenient flatness detection and storage functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刘成才
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-24
Smart Images

Figure CN224548914U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of highway bridge flatness measurement technology, specifically a convenient and portable highway bridge flatness measurement device for on-site inspection. Background Technology
[0002] Road and bridge construction is an important measure for economic development and improving people's livelihoods. After the completion of highways and bridges, their smoothness needs to be measured. Uneven road surfaces increase vehicle vibration and tire wear, directly affecting driving stability and passenger comfort. Severe bumps may lead to loss of control and are directly related to traffic accident rates. Therefore, the main purpose of on-site smoothness measurement of highways and bridges is to ensure driving safety and comfort, while also providing a basis for maintenance and repair.
[0003] Some highway bridge flatness measuring devices used for on-site inspection are not convenient for measuring the width of the road surface or bridge deck, thus affecting the efficiency of the inspection and measurement. Therefore, they do not meet the existing needs. In response, we have proposed a convenient and easy-to-store highway bridge flatness measuring device for on-site inspection. Utility Model Content
[0004] The purpose of this utility model is to provide a convenient and easy-to-store flatness measuring device for on-site inspection of highway bridges, so as to solve the problem mentioned in the background art that some flatness measuring devices for on-site inspection of highway bridges are not convenient for measuring according to the width of the road surface or bridge deck, thus affecting the efficiency of inspection and measurement.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a conveniently stored flatness measuring device for on-site testing of highway bridges, comprising a support base, universal wheels rotatably provided at opposite corners of the bottom end of the support base, slide rails fixedly connected to both sides of the bottom end of the support base, movable seats movably provided on the sides of the two slide rails that are close to each other, slide bars slidably connected to the slide rails fixedly connected to the sides of the two movable seats that are far apart from each other, a support plate fixedly connected in the middle of the sides of the two movable seats that are close to each other, and a plurality of test rods that slide through the support plates are fixedly provided at equal intervals on both sides of the support plates, and a test wheel fixedly connected to the bottom end of each test rod.
[0006] Preferably, both movable seats are arranged in an inverted L-shape, and a rack is fixedly connected to the upper end of the side of the two movable seats that are close to each other.
[0007] Preferably, a motor is fixedly installed in the middle of the upper end of the bearing seat. The output end of the motor passes through the bearing seat through a coupling and extends to the bottom end of the bearing seat. A gear is fixedly connected thereto, and the outer surface of the gear meshes with the racks on both sides.
[0008] Preferably, a limiting plate is fixedly connected to the top of each test rod, and contact buttons are provided on the upper and lower parts of each limiting plate, as well as on the movable seat and support plate.
[0009] Preferably, each of the two movable seats has a plurality of warning lights corresponding to the contact buttons fixedly installed on its upper end, and the warning lights are electrically connected to the corresponding contact buttons.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] 1. This utility model uses a starting motor to drive a gear to rotate. When the gear rotates, it meshes with the racks on both sides, which in turn causes the racks on both sides to drive the moving seats to move along the slide rails on both sides to the side that is further away from each other. This allows the working length of the moving seats on both sides to be changed, making the device suitable for highway bridges of different widths. When not in use, it is also easy to store it at the bottom of the support seat.
[0012] 2. This utility model uses a swivel caster to move the support base. The test wheel at the bottom of the moving base contacts the road surface. When it passes over uneven areas on the road surface, it pushes the test rod to slide through the support plate and causes the limit plate to rise or fall. When the limit plate contacts the upper and lower contact buttons, the corresponding warning lights will be energized in series and illuminated, thus obtaining the detection effect. Then, the length of the test rod rising or falling is measured by measuring ruler. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the bottom structure of the entire utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the movable base of this utility model.
[0016] In the diagram: 1. Support base; 2. Casters; 3. Slide rail; 4. Movable base; 5. Slide bar; 6. Support plate; 7. Rack; 8. Motor; 9. Gear; 10. Test rod; 11. Test wheel; 12. Limit plate; 13. Contact button; 14. Warning light. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] Please see Figures 1 to 3This utility model provides an embodiment of a convenient and easy-to-store highway bridge flatness measuring device for on-site testing, comprising a support base 1, universal wheels 2 rotatably mounted at opposite corners of the bottom of the support base 1, slide rails 3 fixedly connected to both sides of the bottom of the support base 1, movable seats 4 movably mounted on the side of the two slide rails 3 that are close to each other, and slide bars 5 slidably connected to the slide rails 3 fixedly connected to the side of the two movable seats 4 that are far apart from each other, a support plate 6 fixedly connected in the middle of the side of the two movable seats 4 that are close to each other, and a plurality of test rods 10 slidably penetrating the support plates 6 fixedly mounted at equal intervals on both sides of the support plates 6, and a test wheel 11 fixedly connected to the bottom of each test rod 10.
[0019] Both movable seats 4 are arranged in an inverted L shape, and racks 7 are fixedly connected to the upper ends of the two movable seats 4 on the side closest to each other. A motor 8 is fixedly installed in the middle of the upper end of the support seat 1. The output end of the motor 8 passes through the support seat 1 through a coupling and extends to the bottom end of the support seat 1. A gear 9 is fixedly connected thereto. The outer surface of the gear 9 meshes with the racks 7 on both sides. When the motor 8 is started, the gear 9 is driven to rotate. When the gear 9 rotates, it meshes with the racks 7 on both sides, thereby causing the racks 7 on both sides to drive the movable seats 4 to move along the slide rails 3 on both sides to the side away from each other. This can change the working length of the combination of the two movable seats 4, so that the device can be used for highway bridges of different widths. When not in use, it is also convenient to store it at the bottom end of the support seat 1.
[0020] Each test rod 10 is fixedly connected to a limit plate 12 at its top. Each limit plate 12 is equipped with a contact button 13 on its upper and lower sides, as well as on the movable seat 4 and the support plate 6. Several warning lights 14 corresponding to the contact buttons 13 are fixedly installed on the upper ends of the two movable seats 4. The warning lights 14 are electrically connected to the corresponding contact buttons 13. When the test rod 10 passes over an uneven surface, it will push the test rod 10 to slide through the support plate 6 and cause the limit plate 12 to rise or fall. When the limit plate 12 contacts the upper and lower contact buttons 13, the corresponding warning lights 14 will be energized in series, causing the warning lights 14 to light up, thus achieving the test result.
[0021] When using the highway bridge flatness measuring device, the motor 8 drives the gear 9 to rotate. When the gear 9 rotates, it meshes with the racks 7 on both sides, which in turn causes the racks 7 on both sides to drive the moving seats 4 to move along the slide rails 3 on both sides to the opposite side. This changes the working length of the combined moving seats 4, making the device suitable for highway bridges of different widths. When not in use, it can be easily stored at the bottom of the support seat 1. Then, the support seat 1 is moved by the casters 2. The test wheel 11 at the bottom of the moving seat 4 contacts the road surface. When it passes over uneven areas on the road surface, it pushes the test rod 10 to slide through the support plate 6, causing the limit plate 12 to rise or fall. When the limit plate 12 contacts the upper and lower contact buttons 13, the corresponding warning light 14 is energized in series and illuminated, thus obtaining the detection effect. Then, the length of the test rod 10 rising or falling is measured by measuring ruler.
[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A conveniently stored flatness measuring device for on-site inspection of highway bridges, comprising a support base (1), characterized in that: Universal wheels (2) are rotatably provided at the diagonal corners of the bottom end of the bearing seat (1). Slide rails (3) are fixedly connected to both sides of the bottom end of the bearing seat (1). Movable seats (4) are provided on the side of the two slide rails (3) that are close to each other. Slide bars (5) that are slidably connected to slide rails (3) are fixedly connected to the side of the two movable seats (4) that are far apart from each other. Support plates (6) are fixedly connected in the middle of the side of the two movable seats (4) that are close to each other. Several test rods (10) that slide through the support plates (6) are fixedly provided at equal intervals on both sides of the support plates (6). Test wheels (11) are fixedly connected to the bottom end of each test rod (10).
2. The conveniently stored highway bridge flatness measuring device for on-site inspection according to claim 1, characterized in that: Both of the movable seats (4) are arranged in an inverted L shape, and a rack (7) is fixedly connected to the upper end of the side of the two movable seats (4) that are close to each other.
3. The conveniently stored highway bridge flatness measuring device for on-site inspection according to claim 2, characterized in that: A motor (8) is fixedly installed in the middle of the upper end of the bearing seat (1). The output end of the motor (8) passes through the bearing seat (1) through a coupling and extends to the bottom end of the bearing seat (1). A gear (9) is fixedly connected thereto. The outer surface of the gear (9) meshes with the racks (7) on both sides.
4. The conveniently stored highway bridge flatness measuring device for on-site inspection according to claim 1, characterized in that: Each of the test rods (10) is fixedly connected to a limiting plate (12) at its top end. Each of the limiting plates (12) is provided with a contact button (13) on its upper and lower ends, and on the movable seat (4) and the support plate (6).
5. The conveniently stored highway bridge flatness measuring device for on-site inspection according to claim 1, characterized in that: Several warning lights (14) corresponding to the contact buttons (13) are fixedly installed on the upper ends of the two movable seats (4), and the warning lights (14) are electrically connected to the corresponding contact buttons (13).