Road subgrade pavement deflection detection equipment

Abstract

The utility model provides highway subgrade pavement deflection detection equipment. The highway subgrade pavement deflection detection equipment comprises a vehicle body; the drop hammer assembly is arranged at the top of the vehicle body; the adjusting assembly is arranged at the top of the vehicle body, the adjusting assembly comprises a driving motor, a screw rod and a moving frame, and the top of the screw rod and the output end of the driving motor are fixedly installed. According to the highway subgrade pavement deflection detection equipment provided by the utility model, the screw rod is driven to rotate through the driving motor, so that the movable frame and the supporting rod are automatically lifted, and an operator can easily finish supporting and folding operation of the equipment only by starting the driving motor, so that the working efficiency is greatly improved, and the labor intensity is reduced; the detector is surrounded by the protective frame, so that the detector is effectively prevented from being collided by external objects, the detector is fully protected in the equipment transportation and storage process, and the risk of damage caused by accidental collision is reduced.

Description

Technical Field

[0001] This utility model relates to the field of highway engineering testing technology, and in particular to a highway subgrade and pavement deflection testing device. Background Technology

[0002] In the construction of roadbed and pavement, the rebound deflection of the pavement must meet the specified value. If it does not meet the value, it is considered unqualified. Unqualified pavement poses a safety hazard. Therefore, it is necessary to test the rebound deflection of the pavement.

[0003] For example, a highway subgrade and pavement deflection testing device, as disclosed in the prior art (CN 219240215 U), consists of a support unit, a moving unit, a testing unit, and a drop hammer unit mounted on a base plate. The support unit mainly includes support feet mounted on the lower surface of the base plate; the moving unit mainly includes casters mounted on the base plate via a lifting device; the testing unit mainly includes a detector; and the drop hammer unit mainly includes a hammer and a guide tube. The drop hammer unit features a hammer recovery and fixing mechanism for convenient use and retrieval, reducing wear. The support unit uses a combination of shock-absorbing springs and sliding rods to dampen vibrations in the device body, preventing vibration from affecting test data and damaging device parts. In summary, this invention offers convenient hammer recovery, good stability, and excellent shock absorption, making it suitable for widespread application in the field of highway subgrade and pavement deflection testing.

[0004] However, existing testing equipment still has some shortcomings in practical applications. On the one hand, each time it is used, the staff needs to manually rotate the support components to complete the support and limit work of the equipment. The operation steps are cumbersome, which not only consumes a lot of manpower and time, but also seriously reduces work efficiency. On the other hand, after the testing instrument is used, it is usually located at the bottom of the vehicle. During the transportation of the equipment, due to the lack of effective protective measures, the testing instrument is very susceptible to external forces such as collisions and squeezing, which can lead to damage.

[0005] Therefore, it is necessary to provide a highway subgrade and pavement deflection detection device to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a highway subgrade and pavement deflection testing device, which solves the problems of cumbersome operation and easy damage of existing testing equipment.

[0007] To solve the above-mentioned technical problems, this utility model provides a highway subgrade and pavement deflection testing device, comprising:

[0008] Vehicle body;

[0009] A drop hammer assembly, wherein the drop hammer assembly is disposed on the top of the vehicle body;

[0010] An adjustment assembly is disposed on the top of the vehicle body. The adjustment assembly includes a drive motor, a screw, and a movable frame. The top of the screw and the output end of the drive motor are fixedly installed. The bottom of the screw is rotatably connected to the top of the vehicle body. The movable frame is threadedly connected to the outer side of the screw.

[0011] A protective frame is fixedly installed on the top of the vehicle body. Slide grooves are provided on both sides of the protective frame. A connecting plate is slidably connected to the inner side of the slide groove. A detector is fixedly installed at the bottom of the connecting plate. Both ends of the connecting plate are fixedly installed to the movable frame.

[0012] Support rods are fixedly installed around the bottom of the movable frame.

[0013] Preferably, a fixing plate is fixedly installed on the side of the drop hammer assembly, and the fixing plate and the drive motor are fixedly installed.

[0014] Preferably, the detector is disposed on the inner side of the protective frame.

[0015] Preferably, the support rod is slidably connected to the interior of the vehicle body, a buffer assembly is fixedly installed at the bottom of the support rod, and a pad is fixedly installed at the bottom of the buffer assembly.

[0016] Preferably, rollers are fixedly installed around the bottom of the vehicle body, and a push rod is fixedly installed on the top of the vehicle body.

[0017] Preferably, the highway subgrade and pavement deflection testing equipment further includes a sliding sleeve, a movable rod, a connecting frame, and a baffle. The sliding sleeve is fixedly installed at the bottom of the vehicle body, the movable rod is slidably connected to the inside of the sliding sleeve, the connecting frame is fixedly installed at one end of the movable rod, and the baffle is fixedly installed at one end of the connecting frame.

[0018] Preferably, the baffle is slidably connected to the inside of one side of the protective frame.

[0019] Compared with related technologies, the highway subgrade and pavement deflection testing equipment provided by this utility model has the following beneficial effects:

[0020] This utility model provides a highway subgrade and pavement deflection detection device. By driving the screw to rotate through the drive motor, the mobile frame and support rod are automatically raised and lowered. The operator only needs to start the drive motor to easily complete the support and retraction of the equipment, which greatly improves work efficiency and reduces labor intensity.

[0021] The detector is enclosed by a protective frame, which effectively prevents collisions with external objects. During transportation and storage, the detector is fully protected, reducing the risk of damage caused by accidental collisions. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a first embodiment of a highway subgrade and pavement deflection testing device provided by this utility model;

[0023] Figure 2 for Figure 1 The diagram shows another perspective of the structure;

[0024] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the protective frame.

[0025] Figure 4 This is a schematic diagram of the second embodiment of a highway subgrade and pavement deflection testing device provided by this utility model.

[0026] The following are the labels in the diagram: 1. Vehicle body, 11. Roller, 12. Push rod, 2. Drop hammer assembly, 3. Fixing plate, 4. Adjustment assembly, 41. Drive motor, 42. Screw, 43. Moving frame, 5. Protective frame, 51. Slide groove, 6. Connecting plate, 61. Detector, 7. Support rod, 71. Buffer assembly, 72. Pad, 8. Sliding sleeve, 81. Moving rod, 82. Connecting frame, 83. Baffle. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] First Embodiment

[0029] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a highway subgrade and pavement deflection testing device provided by this utility model; Figure 2 for Figure 1 The diagram shows another perspective of the structure; Figure 3 for Figure 1 The diagram shows a cross-sectional view of the protective frame. A highway subgrade and pavement deflection testing device includes: a vehicle body 1;

[0030] Drop hammer assembly 2, wherein the drop hammer assembly 2 is disposed on the top of the vehicle body 1;

[0031] Adjustment component 4 is disposed on the top of the vehicle body 1. The adjustment component 4 includes a drive motor 41, a screw 42 and a movable frame 43. The top of the screw 42 and the output end of the drive motor 41 are fixedly installed. The bottom of the screw 42 is rotatably connected to the top of the vehicle body 1. The movable frame 43 is threadedly connected to the outer side of the screw 42.

[0032] The protective frame 5 is fixedly installed on the top of the vehicle body 1. The protective frame 5 has a sliding groove 51 on both sides. The inner side of the sliding groove 51 is slidably connected to the connecting plate 6. The bottom of the connecting plate 6 is fixedly installed with a detector 61. Both ends of the connecting plate 62 are fixedly installed to the movable frame 43.

[0033] Support rods 7 are fixedly installed around the bottom of the movable frame 43.

[0034] A fixing plate 3 is fixedly installed on the side of the falling hammer assembly 2, and the fixing plate 3 and the drive motor 41 are fixedly installed.

[0035] The detector 61 is located on the inner side of the protective frame 5.

[0036] The support rod 7 is slidably connected to the inside of the vehicle body 1. A buffer assembly 71 is fixedly installed at the bottom of the support rod 7, and a pad 72 is fixedly installed at the bottom of the buffer assembly 71.

[0037] Rollers 11 are fixedly installed around the bottom of the vehicle body 1, and push rods 12 are fixedly installed on the top of the vehicle body 1.

[0038] The buffer assembly 71 can take various forms such as spring buffer structure, hydraulic buffer structure or rubber buffer pad to reduce the vibration impact on the vehicle body 1 and the detection equipment; the pad 72 is made of wear-resistant and non-slip material, such as rubber or metal plate with anti-slip texture, to ensure stable contact with the ground when supporting the equipment and prevent the equipment from sliding.

[0039] The detector 61 is the core component of the highway subgrade and pavement deflection testing equipment, used to detect pavement deflection data in real time. From the installation position, it is fixed to the bottom of the connecting plate 6 and surrounded by the protective frame 5, thus receiving effective protection. In terms of its working principle, when the drop hammer assembly 2 causes deflection deformation in the pavement, it can promptly sense and acquire the data, then transmit it to the data processing equipment for subsequent analysis and recording, thereby providing crucial data support for the quality assessment of highway subgrade and pavement.

[0040] The working principle of the highway subgrade and pavement deflection testing equipment provided by this utility model is as follows:

[0041] After the equipment arrives at the testing site, the drive motor 41 is started first. The drive motor 41 is powered on and runs, driving the screw 42 to rotate clockwise. Since the moving frame 43 is threadedly connected to the screw 42, according to the principle of thread transmission, the moving frame 43 will move downward along the screw 42. During the downward movement of the moving frame 43, the support rod 7 connected to it will also extend downward from the vehicle body 1 in sync. As the support rod 7 continues to extend downward, the pad 72 at its bottom gradually contacts the ground. As the support rod 7 continues to descend, it gradually supports the vehicle body 1 until the roller 11 at the bottom of the vehicle body 1 leaves the ground a certain distance away. At this time, the equipment is in a stable support state.

[0042] After the equipment completes the support positioning, the deflection detection operation can be carried out. The drop hammer assembly 2 is activated, and the drop hammer falls freely under the action of gravity, applying impact force to the road surface and causing the road surface to deflect and deform. The detector 61 installed at the bottom of the connecting plate 6 will detect the deflection data of the road surface in real time and transmit the data to the connected data processing equipment for analysis and recording.

[0043] After the inspection is completed, start the drive motor 41 to rotate counterclockwise, and the screw 42 will rotate in reverse. The moving frame 43 will move upward along the screw 42, driving the support rod 7 to retract into the vehicle body 1. At the same time, the vehicle body 1 will slowly descend until the roller 11 touches the ground again. While the support rod 7 moves upward, the moving frame 43 is connected to the connecting plate 6, and synchronously drives the detector 61 to move upward, thereby storing the detector 61 in the side of the protective frame 5, which serves to protect the detector 61. Afterward, the device can be moved to the storage position or the next inspection location by pushing the push rod 12 and using the rolling of the roller 11.

[0044] Compared with related technologies, the highway subgrade and pavement deflection testing equipment provided by this utility model has the following beneficial effects:

[0045] The drive motor 41 drives the screw 42 to rotate, realizing the automatic lifting and lowering of the mobile frame 43 and the support rod 7. The operator only needs to start the drive motor 41 to easily complete the support and retraction of the equipment, which greatly improves work efficiency and reduces labor intensity.

[0046] The detector 61 is enclosed by the protective frame 5, which effectively prevents external objects from colliding with the detector 61. During the transportation and storage of the equipment, the detector 61 is fully protected, reducing the risk of damage caused by accidental collisions.

[0047] Second Embodiment

[0048] Please refer to the following: Figure 4Based on the first embodiment of this application which provides a highway subgrade and pavement deflection testing device, the second embodiment of this application proposes another highway subgrade and pavement deflection testing device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0049] Specifically, the difference in the second embodiment of this application regarding the highway subgrade and pavement deflection detection device is that the highway subgrade and pavement deflection detection device further includes a sliding sleeve 8, a moving rod 81, a connecting frame 82, and a baffle 83. The sliding sleeve 8 is fixedly installed at the bottom of the vehicle body 1, the moving rod 81 is slidably connected to the inside of the sliding sleeve 8, the connecting frame 82 is fixedly installed at one end of the moving rod 81, and the baffle 83 is fixedly installed at one end of the connecting frame 83.

[0050] The baffle 83 is slidably connected to the inside of one side of the protective frame 5.

[0051] The working principle of the highway subgrade and pavement deflection testing equipment provided by this utility model is as follows:

[0052] After the detector 61 is stored inside the protective frame 5, the staff can push the moving rod 81 to slide inside the sliding sleeve 8, thereby moving the connecting frame 82 and the baffle 83, so that the baffle 83 seals the bottom of the protective frame 5.

[0053] Compared with related technologies, the highway subgrade and pavement deflection testing equipment provided by this utility model has the following beneficial effects:

[0054] By sealing the bottom of the protective frame 5 with baffle 83, the protection effect of the detector 6 can be further enhanced during use.

[0055] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A highway subgrade pavement deflection detection device, characterized by, include: Vehicle body; A drop hammer assembly, wherein the drop hammer assembly is disposed on the top of the vehicle body; An adjustment assembly is disposed on the top of the vehicle body. The adjustment assembly includes a drive motor, a screw, and a movable frame. The top of the screw and the output end of the drive motor are fixedly installed. The bottom of the screw is rotatably connected to the top of the vehicle body. The movable frame is threadedly connected to the outer side of the screw. A protective frame is fixedly installed on the top of the vehicle body. Slide grooves are provided on both sides of the protective frame. A connecting plate is slidably connected to the inner side of the slide groove. A detector is fixedly installed at the bottom of the connecting plate. Both ends of the connecting plate are fixedly installed to the movable frame. Support rods are fixedly installed around the bottom of the movable frame.

2. The highway pavement deflection detection device of claim 1, wherein, A fixing plate is fixedly installed on the side of the drop hammer assembly, and the fixing plate and the drive motor are fixedly installed together.

3. The highway pavement deflection detection device of claim 1, wherein, The detector is located on the inner side of the protective frame.

4. The highway pavement deflection detection device of claim 1, wherein, The support rod is slidably connected to the inside of the vehicle body, and a buffer assembly is fixedly installed at the bottom of the support rod, and a pad is fixedly installed at the bottom of the buffer assembly.

5. The highway pavement deflection detection device of claim 1, wherein, Rollers are fixedly installed around the bottom of the vehicle body, and a push rod is fixedly installed on the top of the vehicle body.

6. The highway subgrade and pavement deflection testing equipment according to claim 1, characterized in that, It also includes a sliding sleeve, a moving rod, a connecting frame, and a baffle. The sliding sleeve is fixedly installed at the bottom of the vehicle body, the moving rod is slidably connected to the inside of the sliding sleeve, the connecting frame is fixedly installed at one end of the moving rod, and the baffle is fixedly installed at one end of the connecting frame.

7. The highway pavement deflection detection device of claim 6, wherein, The baffle is slidably connected to the inside of one side of the protective frame.

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