A device for testing the depth of a road surface construction

Abstract

The utility model discloses a kind of road surface construction depth testing devices, including support and slewing bearing, the outer surface of slewing bearing outer ring is provided with gear teeth, first rotating motor is installed on support, the output end of first rotating motor is fixedly connected with gear, gear is meshed with the gear teeth on slewing bearing and is connected, slewing bearing inner ring is installed on support;Slewing bearing outer ring is further fixedly connected with electric telescopic rod, the output end of electric telescopic rod is fixedly connected with pressing plate, funnel is arranged just below pressing plate, funnel is detachably connected on pressing plate.The utility model inserts check block into limit slot, so that measuring cylinder is just installed just below pressing plate;At this time, fine sand of known volume is poured into funnel, conveniently ground is formed sand heap in accumulation;After funnel is disassembled, since sand heap is just located just below pressing plate at this time, and then pressing plate is conveniently flattened and flattened operation to sand heap.

Description

Technical Field

[0001] This utility model relates to the field of road surface measurement technology, specifically a road surface texture depth testing device. Background Technology

[0002] According to the "Method for Testing Pavement Texture Depth by Manual Sand Paving Method", pavement texture depth (TD) is a key indicator for evaluating pavement skid resistance performance, and its testing procedure is as follows: 1. Take standard sand V=25mL±0.15mL, pour it onto the road surface, and spread it by rotating a pusher plate within the road surface inspection range, trying to spread the sand into a circular sand disc; 2. Measure the diameters (D1) and (D2) of the two mutually perpendicular diameters of the circle formed by the steel ruler (in mm), and substitute them into the approximate formula. Estimate the area of ​​the sand tray; 3. Formula for calculating the surface texture depth of road surface (Accurate to 0.01mm) to obtain the test results.

[0003] Its defects and shortcomings include: it is significantly affected by human factors. When fine sand leaks out of the funnel and accumulates on the ground to form a sand pile, it is difficult to accurately align the center of the circular pressure plate with the center of the sand pile by manual operation. At the same time, it is difficult to ensure that the fine sand is formed into a regular circle by manual leveling, which leads to a large error in the result. Utility Model Content

[0004] The purpose of this invention is to improve and innovate upon the shortcomings and problems existing in the background technology, and to provide a road surface texture depth testing device.

[0005] A pavement texture depth testing device includes a support and a slewing bearing. The outer surface of the outer ring of the slewing bearing is provided with gear teeth. A first rotary motor is mounted on the support, and a gear is fixedly connected to the output end of the first rotary motor. The gear meshes with the gear teeth on the slewing bearing. The inner ring of the slewing bearing is mounted on the support. An electric telescopic rod is also fixedly connected to the outer ring of the slewing bearing. A pressure plate is fixedly connected to the output end of the electric telescopic rod. A funnel is provided directly below the pressure plate, and the funnel is detachably connected to the pressure plate.

[0006] A further embodiment is that a fixed cylinder is installed on both sides of the outer surface of the funnel, and a first slider is slidably fitted inside the fixed cylinder through a movable groove. The first slider is fixedly connected to the bottom wall of the fixed cylinder by a spring. A connecting rod is installed on the first slider. The end of the connecting rod away from the first slider passes through the fixed cylinder and bends upward. A locking block is installed at the end of the connecting rod away from the first slider. A limiting groove adapted to the locking block is opened on the pressure plate.

[0007] A further option is that the connecting rod is L-shaped.

[0008] A further option is to provide a handle on the outer surface of the connecting rod.

[0009] A further embodiment is that an extension plate is slidably fitted onto the pressure plate by means of a slot, a support plate is mounted on the upper surface of the pressure plate, a lead screw is rotatably connected to the support plate, the middle part of the lead screw passes through the second slider and is threadedly connected to it, the lower surface of the second slider is connected to the extension plate, and one end of the lead screw is connected to the output end of the second rotary motor.

[0010] A further option is that the inner ring of the slewing bearing is connected to the bracket via a fixing rod.

[0011] A further option is to provide two electric telescopic rods, which are symmetrically installed on the slewing bearing.

[0012] A further option is that the pressure plate is a round block.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model uses the cooperation between the fixed cylinder, spring, first slider, movable groove, connecting rod, handle, card block and limiting groove; when the card block is embedded in the limiting groove, the measuring cylinder is installed directly below the pressure plate; at this time, a known volume of fine sand is poured into the funnel, and then the funnel is moved upward by the electric telescopic rod, and the fine sand will leak out from the funnel and accumulate on the ground to form a sand pile; when the handle is held and the connecting rod is pulled outward, the card block is disengaged from the limiting groove, and then the funnel can be disassembled, and at this time the sand pile is located directly below the pressure plate, which makes it convenient for the pressure plate to flatten and spread the sand pile. (2) The present invention drives the lead screw to rotate by the second rotary motor, thereby driving the second slider to move along the central axis of the lead screw, which facilitates the extension plate to extend out of the pressure plate, effectively increasing the diameter of the pressure plate and expanding the flattening range of the pressure plate; when the first rotary motor drives the pressure plate to rotate with the help of the slewing bearing, the fine sand can be automatically flattened into a regular circle, thereby improving the accuracy of measurement. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a road surface texture depth testing device provided in an embodiment of this utility model; Figure 2 Provided for the embodiments of this utility model Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a schematic diagram of the connection mechanism provided in an embodiment of the present utility model; Figure 4 This is a top view of the pressure plate provided in an embodiment of the present utility model.

[0015] Reference numerals in the attached drawings: 1. Bracket; 2. First rotary motor; 3. Gear; 4. Slewing bearing; 5. Fixed rod; 6. Electric telescopic rod; 7. Pressure plate; 701. Limiting groove; 8. Funnel; 9. Fixed cylinder; 10. Spring; 11. First slider; 12. Movable groove; 13. Connecting rod; 14. Handle; 15. Locking block; 16. Support plate; 17. Second rotary motor; 18. Lead screw; 19. Second slider; 20. Extension plate; 21. Strip groove. Detailed Implementation

[0016] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] Please see Figure 1 This utility model provides a road surface texture depth testing device, including a support 1, the bottom of which is supported on the road surface. A first rotary motor 2 is fixedly connected to the lower surface of the top wall of the support 1, and the output end of the first rotary motor 2 is fixedly connected to a gear 3 via a coupling. Furthermore, the lower surface of the top wall of the support 1 is also fixedly connected to the top end of a fixing rod 5, and the bottom end of the fixing rod 5 is connected to the inner ring of a slewing bearing 4. It should be noted that the slewing bearing 4 is a large bearing capable of withstanding comprehensive loads, and the inner and outer rings of the slewing bearing 4 can rotate relative to each other. The outer surface of the outer ring of the slewing bearing 4 is provided with gear teeth, and these gear teeth mesh with the gear 3. Therefore, when the first rotary motor 2 drives the gear 3 to rotate, it can drive the outer ring of the slewing bearing 4 to rotate relative to the inner ring.

[0019] Please continue reading. Figure 1 The outer ring of the slewing bearing 4 is also fixedly connected to an electric telescopic rod 6. Two electric telescopic rods 6 are provided, symmetrically installed on the slewing bearing 4. A pressure plate 7 is fixedly connected to the output end of each electric telescopic rod 6. A funnel 8 is positioned directly below the pressure plate 7, and the funnel 8 is detachably connected to the pressure plate 7 via a connecting mechanism. The pressure plate 7 is a circular block.

[0020] It should be noted that the funnel 8 is a certain distance from the pressure plate 7, so that a known volume of fine sand can be poured into the funnel 8. After the fine sand is poured into the funnel 8, the pressure plate 7 is moved upward by the electric telescopic rod 6. Since the funnel 8 is connected to the pressure plate 7 through the connecting mechanism, the funnel 8 can also move upward, and the fine sand will leak out of the funnel and accumulate on the ground to form a sand pile.

[0021] For details, please refer to Figure 2 and Figure 3 The connecting mechanism includes two fixed cylinders 9, which are respectively located on opposite sides of the outer surface of the funnel 8. A first slider 11 is slidably fitted inside each fixed cylinder 9 via a movable groove 12. The first slider 11 is fixedly connected to the bottom wall of the fixed cylinder 9 by a spring 10. A connecting rod 13 is mounted on the first slider 11. The end of the connecting rod 13 away from the first slider 11 passes through the fixed cylinder 9 and bends upwards, making the connecting rod 13 L-shaped. A locking block 15 is provided at the end of the connecting rod 13 away from the first slider 11. A limiting groove 701 adapted to the locking block 15 is provided on the pressure plate 7. When fine sand leaks out of the funnel 8 and accumulates on the ground to form a sand pile, the connecting rod 13 can be pulled outward to disengage the locking block 15 from the limiting groove 701. Then the funnel 8 can be removed. After the funnel 8 is removed, the sand pile is located directly below the pressure plate 7, and the center of the pressure plate 7 corresponds to the center of the sand pile, which facilitates the pressure plate 7 to flatten and level the sand pile.

[0022] Optionally, a handle 14 is provided on the outer surface of the connecting rod 13. The connecting rod 13 can be easily pulled outward by holding the handle 14.

[0023] Preferably, please refer to Figure 4 An extension plate 20 is slidably fitted onto the pressure plate 7 via a slotted groove 21. Two support plates 16 are mounted on the upper surface of the pressure plate 7, and a lead screw 18 is rotatably connected to each support plate 16. The lead screw 18 passes through the middle of a second slider 19 and is threadedly connected to it. The lower surface of the second slider 19 is connected to the extension plate 20. One end of the lead screw 18 is connected to the output end of a second rotary motor 17, which has forward and reverse rotation functions. When the pressure plate 7 flattens the sand pile, the second rotary motor 17 is activated. The second rotary motor 17 drives the lead screw 18 to rotate, thereby causing the second slider 19 to move along the central axis of the lead screw 18. This facilitates the extension plate 20 extending out of the pressure plate 7, effectively increasing the diameter of the pressure plate 7 and expanding its flattening range. At this time, when the first rotary motor 2 drives the pressure plate 7 to rotate via the slewing bearing 4, the fine sand can be automatically flattened into a regular circle, thereby improving the accuracy of the measurement.

[0024] It should be noted that the bracket 1 is also equipped with control buttons corresponding to the first rotary motor 2, the second rotary motor 17 and the electric telescopic rod 6. The control buttons are not shown in the figure. By pressing the control buttons, the first rotary motor 2 and the second rotary motor 17 can be started and stopped, and the extension and retraction of the electric telescopic rod 6 can be controlled.

[0025] The working principle of this utility model is as follows: In specific use, the bottom end of the bracket 1 is placed on the road surface. The electric telescopic rod 6 drives the pressure plate 7 to move downward, causing the bottom end of the funnel 8 to contact the road surface. Then, a certain volume of fine sand is poured into the funnel 8. Subsequently, the electric telescopic rod 6 drives the pressure plate 7 to move upward, at which time the funnel 8 also moves upward, and the fine sand will leak out of the funnel and accumulate on the ground to form a sand pile. Then, the funnel 8 is disassembled. After the funnel 8 is disassembled, the sand pile is located directly below the pressure plate 7. The electric telescopic rod 6 then drives the pressure plate 7 to move downward. The pressure plate 7 moves downwards, first flattening the sand pile. After the pressure plate 7 flattens the sand pile, the second rotary motor 17 is started. The second rotary motor 17 drives the lead screw 18 to rotate, thereby driving the second slider 19 to move along the central axis of the lead screw 18. This facilitates the extension plate 20 to extend out of the pressure plate 7, effectively increasing the diameter of the pressure plate 7 and expanding the flattening range of the pressure plate 7. At this time, when the first rotary motor 2 drives the pressure plate 7 to rotate with the help of the slewing bearing 4, the fine sand can be automatically flattened into a regular circle, thereby improving the accuracy of the measurement.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0028] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Although embodiments of this utility model have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A pavement texture depth testing device, characterized in that: The device includes a bracket (1) and a slewing bearing (4). The outer surface of the outer ring of the slewing bearing (4) is provided with gear teeth. A first rotary motor (2) is installed on the bracket (1). A gear (3) is fixedly connected to the output end of the first rotary motor (2). The gear (3) meshes with the gear teeth on the slewing bearing (4). The inner ring of the slewing bearing (4) is installed on the bracket (1). An electric telescopic rod (6) is also fixedly connected to the outer ring of the slewing bearing (4). A pressure plate (7) is fixedly connected to the output end of the electric telescopic rod (6). A funnel (8) is provided directly below the pressure plate (7). The funnel (8) is detachably connected to the pressure plate (7).

2. The pavement texture depth testing device according to claim 1, characterized in that: The funnel (8) has a fixed cylinder (9) installed on both sides of its outer surface. The fixed cylinder (9) has a first slider (11) slidably fitted inside it through a movable groove (12). The first slider (11) is fixedly connected to the bottom wall of the fixed cylinder (9) by a spring (10). A connecting rod (13) is installed on the first slider (11). The end of the connecting rod (13) away from the first slider (11) passes through the fixed cylinder (9) and bends upward. A locking block (15) is installed on the end of the connecting rod (13) away from the first slider (11). A limiting groove (701) adapted to the locking block (15) is opened on the pressure plate (7).

3. The pavement texture depth testing device according to claim 2, characterized in that: The connecting rod (13) is L-shaped.

4. The pavement texture depth testing device according to claim 2, characterized in that: A handle (14) is provided on the outer surface of the connecting rod (13).

5. The pavement texture depth testing device according to claim 1, characterized in that: An extension plate (20) is slidably fitted on the pressure plate (7) through a slot (21). A support plate (16) is installed on the upper surface of the pressure plate (7). A lead screw (18) is rotatably connected to the support plate (16). The middle part of the lead screw (18) passes through the second slider (19) and is threadedly connected to it. The lower surface of the second slider (19) is connected to the extension plate (20). One end of the lead screw (18) is connected to the output end of the second rotary motor (17).

6. The pavement texture depth testing device according to claim 1, characterized in that: The inner ring of the slewing bearing (4) is connected to the bracket (1) via a fixing rod (5).

7. The pavement texture depth testing device according to claim 1, characterized in that: Two electric telescopic poles (6) are provided, and the two electric telescopic poles (6) are symmetrically installed on the slewing bearing (4).

8. The pavement texture depth testing device according to claim 1, characterized in that: The pressure plate (7) is a round block.

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