Road construction quality detection device

Abstract

The utility model discloses a road construction quality detection device which comprises a bearing plate, a positioning contact, a handheld drop hammer loading device, a positioning groove, a grip, a level gauge, a sliding groove and a vertical positioning frame, the positioning contact is fixed in the middle of the top end of the bearing plate, and the positioning groove is formed in the bottom end of the handheld drop hammer loading device. The handheld drop hammer loading device is in contact with the positioning contact through the positioning groove, the handle is installed at the top of the handheld drop hammer loading device, the level gauge is installed at the side end of the handle, the sliding groove is axially formed in the top end of the handle, and the vertical positioning frame is erected on the bearing plate. And the handheld drop hammer loading device is erected on the upper side of the bearing plate through a vertical positioning frame. According to the utility model, the problem that the loading framework of the handheld drop weight deflectometer is difficult to keep vertical through simple handholding when being used by detection personnel is solved.

Description

Technical Field

[0001] This utility model relates to the field of road construction inspection, and in particular to a road construction quality inspection device. Background Technology

[0002] A handheld falling weight deflectometer is a common road quality testing device and an important tool for assessing the structural performance of infrastructure such as roads, airport runways, and bridges. It simulates traffic loads by applying an instantaneous impact force to the road surface and measures the resulting road deformation or deflection to evaluate the overall strength and load-bearing capacity of the road structure.

[0003] If the drop hammer is not perfectly vertical but at a certain angle, the actual force applied to the road surface may deviate from the design value, leading to measurement errors. In this case, not only will the accuracy of single-point test data be affected, but it may also mislead the assessment of the structural strength and stiffness of the entire road section. Therefore, before conducting the test, it is essential to check that the equipment is placed stably and that the drop hammer device is perpendicular to the ground to achieve optimal testing results.

[0004] The loading structure of a handheld falling weight deflectometer is difficult to keep vertical when used by inspectors by simply holding it by hand. Utility Model Content

[0005] The purpose of this invention is to provide a road construction quality testing device to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a road construction quality inspection device, comprising a bearing plate, a positioning contact, a handheld falling hammer loading device, a positioning groove, a handle, a level, a slide, and a vertical positioning frame. The positioning contact is fixed at the top center of the bearing plate. The handheld falling hammer loading device has a positioning groove at its bottom end, and the handheld falling hammer loading device contacts the positioning contact through the positioning groove. The handle is installed on the top of the handheld falling hammer loading device. The level is installed on the side of the handle. The slide is axially opened at the top of the handle. The vertical positioning frame is mounted on the bearing plate, and the handheld falling hammer loading device is mounted on the upper side of the bearing plate through the vertical positioning frame.

[0007] Based on the above technical solution, the vertical positioning frame includes a base plate, a support cylinder, a sliding column, a positioning structure, a support beam, a locking structure, and a plumb line. The two base plates are placed in a straight line on the left and right sides of the bearing plate. The support cylinder is axially fixed to the middle of the top of the base plate. The lower part of the sliding column is slidably connected to the support cylinder. The positioning structure corresponds to the sliding column through the support cylinder. The left and right ends of the support beam are respectively fixed to the top of the left and right sliding columns. The locking structure is installed in the middle of the support beam. The top of the plumb line is hinged to the middle of the support beam, and the angle of the plumb line is fixed by the locking structure when it is naturally suspended vertically.

[0008] Based on the above technical solution, the plumb rod is slidably connected to the slide groove.

[0009] Compared with the prior art, the present invention has the following advantages: The present invention installs a level instrument at the handle of the handheld drop weight loading device and has an axially opened sliding groove to connect the water quality positioning frame, so as to achieve vertical holding under the limit of the plumb line and ensure the accuracy of the measurement results. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the appearance and structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the handheld drop hammer loading device of this utility model.

[0012] Figure 3 This is a schematic diagram of the bearing plate structure of this utility model.

[0013] Figure 4 This is a schematic diagram of the vertical positioning frame structure of this utility model.

[0014] In the diagram: 1. Bearing plate, 2. Positioning contact, 3. Handheld drop hammer loading device, 4. Positioning groove, 5. Handle, 6. Level, 7. Slide groove, 8. Vertical positioning frame, 9. Base plate, 10. Support cylinder, 11. Sliding column, 12. Positioning structure, 13. Support beam, 14. Locking structure, 15. Plumb line. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] like Figures 1 to 4 As shown, a road construction quality inspection device includes a bearing plate 1, a positioning contact 2, a handheld falling hammer loading device 3, a positioning groove 4, a handle 5, a level 6, a slide 7, and a vertical positioning frame 8. The positioning contact 2 is fixed at the top center of the bearing plate 1. The handheld falling hammer loading device 3 has a positioning groove 4 at its bottom end, and the handheld falling hammer loading device 3 contacts the positioning contact 2 through the positioning groove 4. The handle 5 is installed on the top of the handheld falling hammer loading device 3. The level 6 is installed on the side of the handle 5. The slide 7 is axially opened at the top of the handle 5. The vertical positioning frame 8 is mounted on the bearing plate 1, and the handheld falling hammer loading device 3 is mounted on the upper side of the bearing plate 1 through the vertical positioning frame 8.

[0017] The vertical positioning frame 8 includes a base plate 9, a support cylinder 10, a sliding column 11, a positioning structure 12, a support beam 13, a locking structure 14, and a plumb line 15. The two base plates 9 are placed in a straight line on the left and right sides of the bearing plate 1. The support cylinder 10 is axially fixed to the middle of the top of the base plate 9. The lower part of the sliding column 11 is slidably connected to the support cylinder 10. The positioning structure 12 corresponds to the sliding column 11 through the support cylinder 10. The left and right ends of the support beam 13 are respectively fixed to the top of the left and right sliding columns 11. The locking structure 14 is installed in the middle of the support beam 13. The top of the plumb line 15 is hinged to the middle of the support beam 13, and the angle of the plumb line 15 is fixed by the locking structure 14 when it is naturally suspended vertically.

[0018] The vertical rod 15 is slidably connected to the groove 7.

[0019] The working principle of this utility model is as follows: After placing the bearing plate 1 at the test location, the vertical positioning frame 8 is placed on both sides of the bearing plate 1 through the base plate 9. When the plumb line 15 is naturally suspended vertically, the angle is fixed by the locking structure 14. The handheld drop hammer loading device 3 is connected to the plumb line 15 through the sliding groove 7, and the bottom positioning groove 4 is made to contact the positioning contact 2. After the height of the sliding column 11 is adjusted and fixed by the positioning structure 12, the vertical holding of the handheld drop hammer loading device 3 is completed, ensuring the accuracy of the measurement results.

[0020] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A road construction quality inspection device, comprising a bearing plate (1), a positioning contact (2), a handheld falling hammer loading device (3), a positioning groove (4), a handle (5), a level (6), a slide (7), and a vertical positioning frame (8), characterized in that: The top center of the bearing plate (1) is fixed with a positioning contact (2). The bottom of the handheld drop hammer loading device (3) is provided with a positioning groove (4). The handheld drop hammer loading device (3) contacts the positioning contact (2) through the positioning groove (4). The handle (5) is installed on the top of the handheld drop hammer loading device (3). The level (6) is installed on the side of the handle (5). The slide (7) is axially opened at the top of the handle (5). The vertical positioning frame (8) is mounted on the bearing plate (1). The handheld drop hammer loading device (3) is mounted on the upper side of the bearing plate (1) through the vertical positioning frame (8).

2. The road construction quality testing device according to claim 1, characterized in that: The vertical positioning frame (8) includes a base plate (9), a support cylinder (10), a sliding column (11), a positioning structure (12), a support beam (13), a locking structure (14), and a plumb line (15). The two base plates (9) are placed in a straight line on the left and right sides of the bearing plate (1). The support cylinder (10) is axially fixed to the middle of the top of the base plate (9). The lower part of the sliding column (11) is slidably connected to the support cylinder (10). The positioning structure (12) corresponds to the sliding column (11) through the support cylinder (10). The left and right ends of the support beam (13) are respectively fixed to the top of the left and right sliding columns (11). The locking structure (14) is installed in the middle of the support beam (13). The top of the plumb line (15) is hinged to the middle of the support beam (13), and the angle of the plumb line (15) is fixed by the locking structure (14) when it is naturally suspended vertically.

3. The road construction quality testing device according to claim 2, characterized in that: The vertical rod (15) is slidably connected to the groove (7).

Images