Pavement bearing capacity detection device
By combining the guide rod scale and limit block design with the electric winding wheel and flip-type support, the problems of inaccurate height adjustment and unstable operation of the road bearing capacity testing device are solved, and efficient and accurate test results are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2026-03-24
AI Technical Summary
Existing road bearing capacity testing devices lack precise height adjustment mechanisms, resulting in inaccurate control of the drop height, operator fatigue, and equipment instability.
The guide rod features a centimeter-level scale, combined with a triangular pointer and limit block, to achieve high-precision height adjustment. It is equipped with an electric winding wheel and 120° equidistant rotating support components to ensure device stability and quick reset.
It achieves high-precision control of the drop hammer height, reduces the labor intensity of operators, improves detection efficiency and result accuracy, and maintains stability of the device during the detection process.
Smart Images
Figure CN224033451U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model mainly relates to road engineering detection technical field, concretely is a road surface bearing capacity detection device. BACKGROUND
[0002] The field of road engineering detection mainly involves detecting and evaluating materials, structures during road construction process and road performance after completion.
[0003] The road surface bearing capacity detection device is used for measuring the load capacity that the road surface can bear, and common road surface bearing capacity detection devices include Beckman beam deflectometer, automatic deflectometer, drop hammer deflectometer, etc. The drop hammer deflectometer mainly utilizes the impact load generated by the free falling of the drop hammer to act on the road surface surface, simulates the dynamic load generated on the road surface when the vehicle is driving, and measures the deflection basin data of different positions of the road surface under the impact load by using a high-precision sensor, i.e. the vertical deformation of the road surface surface under the load. However, some handheld drop hammer deflectometers lack precise height adjusting devices, or the adjusting scale is blurred, resulting in inaccurate drop height control. Moreover, the traditional handheld drop hammer deflectometer mainly relies on manual support or simple support, and the operator is prone to fatigue during long-time detection operation, and it is difficult to ensure the stability of the equipment. UTILITY MODEL CONTENTS
[0004] The utility model technical scheme mainly provides a road surface bearing capacity detection device to solve the technical problems of lack of precise height adjusting device for the drop hammer and inaccurate drop height control in the above background technology.
[0005] The utility model solves the above technical problems by adopting the following technical scheme:
[0006] The utility model discloses a road surface bearing capacity detection device which comprises a detection main body and a measurement host, and the detection main body and the measurement host are electrically connected.
[0007] The bearing seat is circular, and a support member is rotationally connected to the outer wall of the bearing seat through a damping hinge.
[0008] The outer wall of the guide rod is slidably connected with a drop hammer and a baffle plate.
[0009] Further, the support is arranged in equiangular distribution of 120° with the shaft center of the bearing as the center, and the support is formed into a turnover structure through a damping hinge, and a buffer pad is arranged at the shaft center of the bearing, and the outer wall of the bottom of the guide rod is threadedly connected with the inner wall of the through hole arranged at the shaft center of the top of the bearing.
[0010] Further, the baffle is fixedly connected with a triangular pointer at the top corresponding to the scale graduation.
[0011] Further, the limiting block is in the shape of a trapezoid, and the smaller end of the trapezoid is adjacent to the inner wall of the notch of the guide rod.
[0012] Further, the baffle is composed of a metal plate and a rubber protective layer, the drop hammer is attached to the bottom of the rubber protective layer, a spring is arranged in the baffle, one end of the push block extends into the baffle and is fixed with one end of the spring, and the other end of the spring is fixed with one side of the inner wall of the cavity of the baffle.
[0013] Further, the outer wall of the guide rod is rotatably connected with a winding wheel above the corresponding baffle, the outer wall of the winding wheel is wound with a pull rope, one end of the pull rope is fixed with a pull buckle, and one end of the outer wall of the drop hammer is fixedly connected with a circular ring engaged with the pull buckle.
[0014] Compared with the prior art, the device has the following beneficial effects:
[0015] 1. The guide rod is marked with a centimeter scale, and high-precision height adjustment is realized through cooperation of the triangular pointer and the trapezoidal notch of the limiting block, while the structural strength of the guide rod is ensured; the spring limiting structure of the baffle is simple to operate, and can quickly and accurately position the height of the drop hammer.
[0016] 2. The device increases the turnover support arranged in equiangular distribution of 120°, and forms a stable triangular support structure, so that personnel do not need to support for a long time, and the labor intensity is reduced.
[0017] 3. The device is equipped with an electric winding wheel, so that the drop hammer can be quickly reset when it cannot be automatically reset.
[0018] The device will be explained and described in detail in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a structural schematic view of the device;
[0020] Figure 2 It is an exploded view of the device;
[0021] Figure 3 It is a structural schematic view of the guide rod of the device;
[0022] Figure 4 It is a structural schematic view of the device;Figure 3 Structure enlarged schematic view at middle A;
[0023] Figure 5 The folding structure schematic view of the utility model.
[0024] Reference numerals in the drawing:
[0025] 1, detection main body; 2, measuring host; 3, bearing seat; 301, supporting piece; 302, buffer pad; 4, guide rod; 5, drop hammer; 6, baffle; 601, push block; 602, limiting block; 7, winding wheel.
[0026] The drawing is mainly three-dimensional, improves the sense of reality, and the practical structure is about 15, and the invention structure is about 30. DETAILED DESCRIPTION
[0027] In order to facilitate understanding of the utility model, the utility model will be described more comprehensively below with reference to the related drawings, and several embodiments of the utility model are given in the drawings, but the utility model can be realized by different forms, and is not limited to the embodiments described in the text, on the contrary, these embodiments are provided to make the disclosed content of the utility model more thorough and comprehensive.
[0028] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on another element or there can be a central element, and when an element is referred to as "connected to" another element, it can be directly connected to another element or there can be a central element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0029] Please refer to the drawings Figures 1-5 A road surface bearing capacity detection device, including detection main body 1 and measuring host 2, detection main body 1 and measuring host 2 are electrically connected, detection main body 1 includes bearing seat 3 and guide rod 4, guide rod 4 is detachably connected to the top of bearing seat 3, the outer wall of guide rod 4 is slidably connected with drop hammer 5 and baffle 6 respectively, the surface of guide rod 4 is engraved with a scale in centimeters; drop hammer 5 is located directly below baffle 6;
[0030] Bearing seat 3 is circular, and the outer wall thereof is rotatably connected with supporting piece 301 through damping hinge;
[0031] The top of baffle 6 is slidably connected with push block 601, one end of push block 601 is fixedly connected with limiting block 602, and one end of the outer wall of guide rod 4 is equidistantly provided with a slot for inserting and connecting limiting block 602 at the position corresponding to limiting block 602.
[0032] In the embodiment, as Figure 1 , Figure 2 andFigure 5 As shown in the figure, the support 301 is arranged at the center of the shaft center point of the bearing seat 3 with an equiangular distribution of 120°, and the support 301 is formed into a flip structure through a damping hinge, and a buffer pad 302 is arranged at the shaft center of the bearing seat 3, and the outer wall of the bottom of the guide rod 4 is threadedly connected with the inner wall of the through hole arranged at the top shaft center of the bearing seat 3, and the three supports 301 can form a stable triangular support structure, effectively ensuring that the detection device remains stable during the detection process, improving the accuracy of the detection result, and when the detection device is not used, the support 301 can be inwardly flipped to be folded, reducing the horizontal floor area of the bearing seat 3, facilitating the detection device to be put into the assembly box for storage and transportation, and avoiding the unnecessary long-time support of personnel.
[0033] In the embodiment, as shown in the figure, Figure 1 A triangular pointer is fixedly connected to the top of the baffle 6 at the corresponding scale of the scale, the triangular pointer cooperates with the scale, the pointer points to the scale, and the height position of the baffle 6 can be intuitively and clearly read by the operator, so that the initial height of the drop hammer 5 can be quickly and conveniently determined, and the efficiency and convenience of detection are improved.
[0034] In the embodiment, as shown in the figure, Figure 3 and Figure 4 The limiting block 602 is in the shape of a trapezoid, one end of the trapezoid with a small area is adjacent to the inner wall of the notch of the guide rod 4, the length of the guide rod 4 is 1.2 m, the interval of the clamping grooves is 4 cm, 30 clamping groove positions can be provided, the fine adjustment of the height of the drop hammer 5 can be satisfied, the interval of the clamping grooves and the shape of the large opening outward and the small opening inward do not excessively weaken the structural strength of the guide rod 4, the guide rod 4 can remain stable when bearing the impact of the drop hammer 5, and the clamping groove positions can also satisfy the requirements of different road conditions and detection.
[0035] In the embodiment, as shown in the figure, Figure 3 and Figure 4 The baffle 6 is composed of a metal plate and a rubber protective layer, the drop hammer 5 is attached to the bottom of the rubber protective layer, a spring is arranged in the baffle 6, one end of the push block 601 extends into the interior of the baffle 6 and is fixed with one end of the spring, the other end of the spring is fixed with one side of the inner wall of the cavity of the baffle 6, the interior spring cooperates with the push block 601, when the push block 601 is pulled outward, the limiting block 602 can be separated from the corresponding notch of the outer wall of the guide rod 4, at this time the baffle 6 can slide freely on the guide rod 4, when the appropriate height is adjusted, the push block 601 is loosened, the spring can reset the push block 601, the limiting block 602 is inserted into the corresponding notch again, the positioning of the baffle 6 is realized, the height of the baffle 6 is conveniently and accurately adjusted, the falling height of the drop hammer 5 is controlled, and different detection requirements can be satisfied.
[0036] In the embodiment, as shown in the figure, Figure 1As shown, the outer wall of the guide rod 4 is rotationally connected with a winding wheel 7 above the baffle 6, and the outer wall of the winding wheel 7 is wound with a pull rope, one end of the pull rope is fixed with a pull buckle, and one end of the outer wall of the drop hammer 5 is fixedly connected with a circular ring matched with the pull buckle. When the drop hammer 5 is relatively high in height detection, the drop hammer 5 is difficult to be automatically reset by the buffer pad 302, and after the gravitational potential energy of the drop hammer 5 is converted into kinetic energy, most of the energy is transmitted to the road surface through the buffer pad 302→the guide rod 4→the bearing seat 3, and the buffer pad 302 only serves as a secondary energy dissipation path, the deformation ratio of which is controlled by the material thickness and the elastic modulus to ensure that the force value error of the main transmission path is within the allowable range of detection, and the winding wheel 7 is driven by a motor to quickly wind and unwind the pull rope, which can complete the reset of the drop hammer 5 within a few seconds, and the efficiency is improved by more than 50% compared with manual manual bending and lifting, and only a certain amount of pull rope is needed to be unwound in advance by the motor.
[0037] The specific operation process of the utility model is as follows: the detection main body 1 and the measurement host 2 are placed in the equipped assembly box, and the components in the box are independently placed to avoid mutual collision and damage during transportation. After arriving at the detection site, the components are taken out from the assembly box.
[0038] The bearing seat 3 is placed on a flat detection road surface, the three supporting pieces 301 are unfolded outward one by one through the 180° damping hinges, the baffle 6 and the drop hammer 5 are sequentially and slidably connected to the outer wall of the guide rod 4, and the drop hammer 5 is located directly below the baffle 6, then the bottom of the guide rod 4 is threadedly connected with the through hole at the top of the bearing seat 3, and the guide rod 4 is rotated to be stably installed on the bearing seat 3.
[0039] According to the detection requirement, the height of the baffle 6 is adjusted by referring to the scale on the surface of the guide rod 4, the dial block 601 is pulled outward, the limiting block 602 is driven to be separated from the corresponding slot on the outer wall of the guide rod 4, and at this time the baffle 6 can slide freely on the guide rod 4.
[0040] The triangular pointer fixedly connected to the top of the baffle 6 is observed, the baffle 6 is moved to the scale position corresponding to the required height, the dial block 601 is loosened, the dial block 601 is reset under the action of the spring in the baffle 6, the limiting block 602 is inserted into the corresponding slot again, the baffle 6 is fixed, the thickness of the baffle 6 metal plate is t2, the thickness of the rubber protective layer is t2, the bottom surface of the drop hammer 5 is adjusted to a predetermined height H, the pointer of the baffle 6 indicates a value h1, the scale takes the top of the baffle 6 as a reference point, the top position height indicated by the pointer corresponding to h1 is calculated by the formula H 实 = H-(h1+t1+t2) to calculate the actual falling height H of the drop hammer 5 实 , to ensure that the detection requirement is met.
[0041] The measuring host 2 is started, the electrical connection with the detection body 1 is completed, the working state is entered, the measuring host 2 is measured, the bearing seat 3 is internally integrated with core detection elements such as high-precision acceleration sensors and displacement sensors, the drop hammer 5 is lifted and released, under the action of gravity, freely falls and impacts the buffer pad 302 at the bearing seat 3 shaft, transmits the impact force to the road surface, the sensor in the bearing seat 3 captures the change of the drop hammer 5 falling and impacting at the moment in real time, these sensors are based on the principle of electromagnetic induction, strain gauge and the like, are converted into electrical signals, are transmitted to the signal processing module of the measuring host 2 through the electrical connection line, and the detection result is displayed on the display screen of the measuring host 2 in real time, if the detection height is low, after the drop hammer 5 impacts the buffer pad 302, the elastic buffer pad 302 can be used to automatically rebound and reset, when the detection height is high, the drop hammer 5 cannot be automatically reset, the motor is started to drive the winding wheel 7, a certain amount of pull rope is wound and released in advance, the pull buckle is fixedly connected with the outer wall circular ring of the drop hammer 5, the winding wheel 7 is reversely rotated, a certain length of pull rope is released, the drop hammer 5 is lifted to the initial position through the pull rope, and is attached below the baffle 6.
[0042] After the detection is completed, the measuring host 2 is closed, the connection with the detection body 1 is disconnected, the bearing seat 3 is folded by turning inward the support 301, the connection between the guide rod 4 and the bearing seat 3 is disconnected, the drop hammer 5 and the baffle 6 are removed, and after the components are cleaned, the components are placed back into the assembly box.
[0043] The utility model is described exemplarily in combination with the drawings, obviously, the utility model is not limited by the above-mentioned mode in the specific implementation, as long as the method concept and technical scheme of the utility model are adopted to carry out this kind of non-essential improvement, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.
Claims
1. A road surface bearing capacity detection device comprising a detection main body (1) and a measurement main machine (2), characterized in that: The detection body (1) and the measurement host (2) are electrically connected, the detection body (1) includes a bearing seat (3) and a guide rod (4), the guide rod (4) is detachably connected above the bearing seat (3), the outer wall of the guide rod (4) is slidably connected with a drop hammer (5) and a baffle (6) respectively, and the surface of the guide rod (4) is engraved with a scale in centimeters; the drop hammer (5) is located below the baffle (6); The bearing seat (3) is circular, and the outer wall of the bearing seat (3) is rotatably connected with a support (301) through a damping hinge; The baffle (6) is slidably connected with a dial block (601) at the top, one end of the dial block (601) is fixedly connected with a limiting block (602), and the outer wall of the guide rod (4) is equidistantly provided with a slot at a position corresponding to the limiting block (602) for inserting and connecting the limiting block (602).
2. The road bearing capacity detection device according to claim 1, characterized in that: The support (301) is equiangularly distributed at 120° around the center of the bearing seat (3), the support (301) forms a turnover structure through a damping hinge, and a buffer pad (302) is arranged at the center of the bearing seat (3), and the outer wall of the bottom of the guide rod (4) is threadedly connected with the inner wall of the through hole arranged at the top of the bearing seat (3).
3. The road surface bearing force detection device according to claim 2, characterized by: The baffle (6) is fixedly connected with a triangular pointer at the top corresponding to the scale.
4. The road bearing capacity detection device according to claim 1, characterized in that: The limiting block (602) is trapezoidal, and the smaller end of the trapezoidal area is adjacent to the inner wall of the slot of the guide rod (4).
5. The road bearing capacity detection device according to claim 1, characterized in that: The baffle (6) is composed of a metal plate and a rubber protective layer, the drop hammer (5) is attached to the bottom of the rubber protective layer, a spring is arranged in the baffle (6), one end of the dial block (601) extends into the baffle (6) and is fixed with one end of the spring, and the other end of the spring is fixed with one side of the inner wall of the cavity of the baffle (6).
6. The road bearing capacity detection device according to claim 1, characterized in that: The outer wall of the guide rod (4) is rotatably connected with a winding wheel (7) above the baffle (6), the outer wall of the winding wheel (7) is wound with a pull rope, one end of the pull rope is fixed with a pull buckle, and one end of the outer wall of the drop hammer (5) is fixedly connected with a circular ring matched with the pull buckle.