Road surface flatness measuring device for road detection

Abstract

The application discloses a road surface flatness measuring device for road detection, and relates to the technical field of road flatness detection, in particular to a road surface flatness measuring device for road detection, which comprises a detection frame, adjusting support rods are fixedly connected to the two sides of the detection frame, connecting rod supports are movably connected to the sides, away from the detection frame, of the adjusting support rods, a road surface detection mechanism is arranged at the middle part of the detection frame, and a pressure sensing panel is horizontally attached to the rear end of the detection frame. The road surface flatness measuring device for road detection can provide continuous downward pressure for the support arm, so that the detection wheel always keeps adhering to the ground during use, the feedback wheel will produce vertical deviation when encountering uneven road surface, the transmission rod is vertically moved along the opening direction of the guide sleeve, and the pressure between the pressure sensor and the pressure sensing panel is used to detect the flatness of the road surface.

Description

Technical Field

[0001] This invention relates to the field of road smoothness detection technology, specifically to road surface smoothness measuring equipment for road inspection. Background Technology

[0002] Road surface smoothness refers to the deviation of the longitudinal unevenness of the road surface. It is an important indicator in road evaluation and construction acceptance, primarily reflecting the smoothness of the road's longitudinal profile curve. A relatively smooth longitudinal profile curve indicates a relatively smooth road surface, or relatively good smoothness; conversely, a rough surface indicates relatively poor smoothness. Good road surfaces require good smoothness. Road surface smoothness is one of the main technical indicators for evaluating road quality, affecting driving safety, comfort, the magnitude of impact forces on the road surface, and its service life. Uneven road surfaces increase driving resistance and cause additional vibrations in vehicles. These vibrations cause bumpy rides, affecting driving speed and safety, driving smoothness, and passenger comfort. Simultaneously, vibrations exert impact forces on the road surface, thus accelerating damage to the road surface and vehicle components, tire wear, and increasing fuel consumption. Moreover, in water-rich areas, uneven road surfaces... It can also trap rainwater, accelerating water damage to the road surface. Therefore, to reduce vibration and impact, improve driving speed, and enhance driving comfort and safety, the road surface should maintain a certain degree of smoothness. Factors affecting road surface smoothness can involve design, construction, natural conditions, and many other aspects. Excellent road surface smoothness relies on excellent construction equipment, meticulous construction techniques, strict construction quality control, and frequent and timely maintenance. The main factors affecting the smoothness of asphalt concrete pavements include: uneven settlement, paving process, compaction process, treatment of transverse joints, mix design, and underlying layer defects. Smoothness directly reflects the comfort of vehicle driving, as well as the safety and service life of the road surface. Road surface smoothness testing can provide important information for decision-makers, enabling them to make optimized decisions for road maintenance, repair, and resurfacing. On the other hand, road surface smoothness testing can accurately provide information on the quality of road construction, providing an objective indicator for quality assessment.

[0003] Existing patent (publication number: CN114635335A) discloses a road smoothness inspection vehicle, including a vehicle body and an inspection device mounted on the vehicle body for detecting road smoothness. The inspection device includes multiple probes arranged sequentially along the road width direction, multiple piezoelectric sensors mounted on the vehicle body and located at the upper end of each probe, and a processing module connected to the multiple piezoelectric sensors. The probes are slidably connected to the vehicle body. When the lower end of the probe contacts the road surface, the upper end of the probe abuts against the piezoelectric sensor. The piezoelectric sensor is used to detect the vertical movement distance of each probe to obtain the protrusion value at various points on the road. The processing module is used to obtain the road smoothness index after acquiring the data detected by the multiple piezoelectric sensors. This application has the advantages of improving inspection speed, reducing traffic interference during inspection, optimizing the convenience of operation, and improving inspection efficiency. However, the current efficiency of road surface smoothness testing is mainly determined by the single detection range of the testing equipment. Therefore, insufficient detection range of the equipment will directly affect the efficiency of road surface smoothness testing. Secondly, due to the size of the equipment, it is difficult to conduct simultaneous testing on stepped road surfaces, which cannot well meet people's needs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a road surface smoothness measuring device for road inspection, which solves the problems mentioned in the background art, such as the fact that the current road surface smoothness detection efficiency is mainly determined by the single detection range of the detection device, so the insufficient detection range of the device will directly affect the road surface smoothness detection efficiency, and that general devices are difficult to simultaneously detect stepped road surfaces due to their size.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a road surface smoothness measuring device for road inspection, comprising an inspection frame, wherein adjusting rods are fixedly connected to both sides of the inspection frame, and connecting rod brackets are movably connected to the side of the adjusting rods away from the inspection frame, a road surface inspection mechanism is provided in the middle of the inspection frame, and a pressure sensing panel is horizontally attached to the rear end of the inspection frame.

[0006] Optionally, the detection frame includes a support base plate, with support plates fixedly connected to both sides of the bottom of the support base plate by bolts, a guide sleeve vertically penetrating the front end of the support base plate, and the top two sides of the support base plate being fixedly connected to the bottom ends of the support rods, with the top ends of the two support rods being fixedly connected to the bottom sides of the top plate respectively.

[0007] Optionally, the support plates are symmetrically distributed about the vertical center line of the support substrate, and the support plates are set as inclined structures, and the support substrate and the top plate are parallel to each other.

[0008] Optionally, the adjusting support rod includes a positioning sleeve that fits onto one side of the detection frame. The side of the positioning sleeve away from the detection frame is fixedly connected to one end of the connecting seat. The other end of the connecting seat is fixedly connected to a fixing sleeve, and a support rod is vertically inserted through the interior of the fixing sleeve.

[0009] Optionally, the support rods have guide grooves vertically distributed in the middle, and the support rods are symmetrically distributed about the vertical center line of the detection frame.

[0010] Optionally, the connecting rod bracket includes two support arms with one end connected to the adjusting support rod, the middle parts of the two support arms are connected by a connecting rod, and the other end of the support arm is provided with a guide groove.

[0011] The end of the support arm away from the adjusting rod is movably connected to a pressure rod, and the bottom end of the pressure rod is fixedly connected to a detection wheel. The bottom middle part of the support arm is fixedly connected to one end of a return spring, and the other end of the return spring is fixedly connected to the bottom end of the detection frame.

[0012] Optionally, the support arm, connecting rod, and pressure rod form a movable linkage structure, and the pressure rod is parallel to the central axis of the adjusting support rod. Meanwhile, the support arm forms an elastic structure through a return spring.

[0013] Optionally, the road surface detection mechanism includes a transmission rod that runs through the inside of the detection frame. The bottom end of the transmission rod is hinged to the middle of the feedback rod, and both ends of the feedback rod are movably connected to feedback wheels.

[0014] The top end of the transmission rod is hinged to one end of the telescopic arm, and a pressure sensor is hinged to the other end of the telescopic arm. A positioning rod is horizontally inserted through the middle of the telescopic arm, and the two ends of the positioning rod are respectively inserted into the bottom end of the positioning plate. The top of the positioning plate away from the positioning rod is fixedly sleeved with the detection frame.

[0015] Optionally, the central axis of the transmission rod is aligned with the central axis of the guide sleeve, and the transmission rod and the telescopic arm form a movable connecting rod, and the central axis of the transmission rod is parallel to the central axis of the pressure sensor.

[0016] Optionally, the telescopic arm forms a rotating structure via a positioning rod, and the telescopic arm and the positioning rod form a lever structure.

[0017] This invention provides a road surface smoothness measuring device for road inspection, which has the following beneficial effects:

[0018] 1. The road surface smoothness measuring device for road inspection consists of a support base plate, a top plate, and support rods that form the overall frame structure of the device, thereby providing fixed support for the device. The guide sleeve provides limiting guidance for the road surface inspection mechanism during use, maintaining the verticality of the transmission rod during movement. The support plate is fixedly connected to one end of the return spring.

[0019] 2. The road surface smoothness measuring equipment for road inspection is composed of an integrated structure of positioning sleeve, connecting seat and fixing sleeve. The positioning sleeve and fixing sleeve can maintain the parallelism between the support rod and the support rod, so that the connecting rod support can maintain a symmetrical distribution. The connecting rod support can be moved up and down along the guide groove in the middle of the support rod, thereby adjusting the horizontal height of the connecting rod support.

[0020] 3. This road surface smoothness measuring device has two support arms that provide horizontal support for the pressure rod. The support arms, connecting rod, and pressure rod are arranged in a parallelogram. The connecting rod can maintain the parallelism of the two support arms during rotation. The pressure rod can be adjusted horizontally along the opening direction of the guide groove, thereby changing the distance between the pressure rod and the adjusting support rod. The return spring can provide continuous downward pressure to the support arms, thus ensuring that the testing wheel remains in contact with the ground during use.

[0021] 4. In this road surface smoothness measuring device, the feedback wheel will deflect vertically when it encounters an uneven road surface, causing the transmission rod to move vertically along the opening of the guide sleeve. This causes the telescopic arm to deflect around the positioning rod as the rotation center. When the transmission rod moves upward, it can press down the pressure sensor at the other end of the telescopic arm. The smoothness of the road surface is detected by the pressure sensor and the pressure sensing panel. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of the road surface evenness measuring equipment used for road inspection.

[0023] Figure 2 This is a schematic diagram of the frontal adjustment structure of the road surface evenness measuring equipment used for road inspection.

[0024] Figure 3 This is a side view half-section diagram of the road surface evenness measuring equipment used for road inspection.

[0025] Figure 4 This is a side view schematic diagram of the road surface evenness measuring equipment used for road inspection.

[0026] Figure 5 For the road surface smoothness measuring equipment used in this road inspection Figure 1A magnified structural diagram at point A in the diagram.

[0027] In the diagram: 1. Detection frame; 101. Support base plate; 102. Support plate; 103. Guide sleeve; 104. Support rod; 105. Top plate; 2. Adjusting support rod; 201. Positioning sleeve; 202. Connecting seat; 203. Fixing sleeve; 204. Support rod; 3. Linkage bracket; 301. Support arm; 302. Connecting rod; 303. Guide groove; 304. Pressure rod; 305. Detection wheel; 306. Return spring; 4. Road surface detection mechanism; 401. Transmission rod; 402. Feedback rod; 403. Feedback wheel; 404. Telescopic arm; 405. Pressure sensor; 406. Positioning rod; 407. Positioning plate; 5. Pressure sensing panel. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not 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 of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Please see Figures 1 to 5 The present invention provides a technical solution: a road surface smoothness measuring device for road inspection, including a detection frame 1, with adjusting support rods 2 fixedly connected to both sides of the detection frame 1, and a connecting rod bracket 3 movably connected to the side of the adjusting support rods 2 away from the detection frame 1, a road surface detection mechanism 4 provided in the middle of the detection frame 1, and a pressure sensing panel 5 horizontally attached to the rear end of the detection frame 1.

[0032] The detection frame 1 includes a support base plate 101. Support plates 102 are fixedly connected to both sides of the bottom of the support base plate 101 by bolts. A guide sleeve 103 is vertically inserted through the front end of the support base plate 101. The top two sides of the support base plate 101 are fixedly connected to the bottom ends of the support rods 104. The top ends of the two support rods 104 are fixedly connected to the bottom sides of the top plate 105 respectively. The support plates 102 are symmetrically distributed about the vertical center line of the support base plate 101, and the support plates 102 are set as inclined structures. The support base plate 101 and the top plate 105 are parallel to each other.

[0033] The cooperation between the support base plate 101, the top plate 105 and the support rod 104 constitutes the overall frame structure of the device, thereby providing fixed support for the device. The guide sleeve 103 can provide a limiting and guiding function for the road detection mechanism 4 during use, maintaining the verticality of the transmission rod 401 during movement. The support plate 102 is fixedly connected to one end of the return spring 306.

[0034] The adjusting support rod 2 includes a positioning sleeve 201 that fits onto one side of the detection frame 1. The side of the positioning sleeve 201 away from the detection frame 1 is fixedly connected to one end of the connecting seat 202. The other end of the connecting seat 202 is fixedly connected to a fixing sleeve 203. A support rod 204 is vertically penetrating the interior of the fixing sleeve 203. Guide grooves are vertically distributed in the middle of the support rod 204. The support rods 204 are symmetrically distributed about the vertical center line of the detection frame 1.

[0035] The positioning sleeve 201, connecting seat 202 and fixing sleeve 203 are integrated into one structure. The positioning sleeve 201 and fixing sleeve 203 can maintain the parallelism between the support rod 204 and the support rod 104, so that the connecting rod bracket 3 can maintain a symmetrical distribution. The connecting rod bracket 3 can be moved up and down along the guide groove in the middle of the support rod 204, thereby adjusting the horizontal height of the connecting rod bracket 3.

[0036] The linkage bracket 3 includes two support arms 301 connected at one end to the adjusting support rod 2. The middle parts of the two support arms 301 are connected by a connecting rod 302. The other end of the support arm 301 is provided with a guide groove 303. The end of the support arm 301 away from the adjusting support rod 2 is movably connected to a pressure rod 304. The bottom end of the pressure rod 304 is fixedly connected to a detection wheel 305. The bottom end of the middle part of the support arm 301 is fixedly connected to one end of a return spring 306, and the other end of the return spring 306 is fixedly connected to the bottom end of the detection frame 1.

[0037] The support arm 301, connecting rod 302 and pressure rod 304 form a movable linkage structure, and the pressure rod 304 is parallel to the central axis of the adjusting support rod 2. Meanwhile, the support arm 301 forms an elastic structure through the return spring 306.

[0038] Two support arms 301 can provide horizontal support for the pressure rod 304. The support arms 301, connecting rod 302 and pressure rod 304 are arranged in a parallelogram. The connecting rod 302 can maintain the parallelism of the two support arms 301 during rotation. The pressure rod 304 can be adjusted horizontally along the opening direction of the guide groove 303, thereby changing the distance between the pressure rod 304 and the adjusting support rod 2. The return spring 306 can provide continuous downward pressure for the support arms 301, thereby keeping the detection wheel 305 in contact with the ground during use.

[0039] The road surface detection mechanism 4 includes a transmission rod 401 that runs through the inside of the detection frame 1. The bottom end of the transmission rod 401 is hinged to the middle of the feedback rod 402. Both ends of the feedback rod 402 are movably connected to feedback wheels 403. The top end of the transmission rod 401 is hinged to one end of the telescopic arm 404. The other end of the telescopic arm 404 is hinged to a pressure sensor 405. A positioning rod 406 runs horizontally through the middle of the telescopic arm 404. Both ends of the positioning rod 406 are respectively inserted into the bottom end of the positioning plate 407. The top end of the positioning plate 407 away from the positioning rod 406 is fixedly sleeved with the detection frame 1.

[0040] The central axis of the transmission rod 401 is aligned with the central axis of the guide sleeve 103, and the transmission rod 401 and the telescopic arm 404 form a movable connecting rod. Furthermore, the central axis of the transmission rod 401 is parallel to the central axis of the pressure sensor 405.

[0041] The telescopic arm 404 forms a rotating structure through the positioning rod 406, and the telescopic arm 404 and the positioning rod 406 form a lever structure.

[0042] When the feedback wheel 403 encounters an uneven road surface, it will deflect vertically, causing the transmission rod 401 to move vertically along the opening direction of the guide sleeve 103. This causes the telescopic arm 404 to deflect around the positioning rod 406 as the rotation center. When the transmission rod 401 moves upward, it can cause the pressure sensor 405 at the other end of the telescopic arm 404 to press down. The flatness of the road surface is detected by the pressure sensor 405 and the pressure sensing panel 5.

[0043] In summary, the road surface smoothness measuring device for road inspection uses an integrated structure consisting of positioning sleeve 201, connecting seat 202, and fixing sleeve 203. The positioning sleeve 201 and fixing sleeve 203 maintain the parallelism between the support rod 204 and the support rod 104, allowing the connecting rod bracket 3 to maintain a symmetrical distribution. The connecting rod bracket 3 can be adjusted up and down along the guide groove in the middle of the support rod 204, thereby changing its horizontal height. The two support arms 301 provide horizontal support for the pressure rod 304. The support arms 301, connecting rod 302, and pressure rod 304 are arranged in a parallelogram. The connecting rod 302 maintains the parallelism of the two support arms 301 during rotation, and the pressure rod 304 can move along the guide groove 301. The opening direction of 3 is adjusted horizontally to change the distance between the pressure rod 304 and the adjusting support rod 2. The return spring 306 can provide continuous downward pressure to the support arm 301, so that the detection wheel 305 always keeps in contact with the ground during use. The user can push the road detection device along the road surface. When the feedback wheel 403 encounters an uneven road surface, it will deflect vertically, causing the transmission rod 401 to move vertically along the opening direction of the guide sleeve 103. This causes the telescopic arm 404 to deflect around the positioning rod 406 as the rotation center. When the transmission rod 401 moves upward, it can press down the pressure sensor 405 at the other end of the telescopic arm 404. The flatness of the road surface is detected by the pressure sensor 405 and the pressure sensing panel 5.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A road surface evenness measuring device for road inspection, comprising an inspection frame (1), characterized in that: Adjustable support rods (2) are fixedly connected to both sides of the detection frame (1). The side of the adjustable support rod (2) away from the detection frame (1) is movably connected to a connecting rod bracket (3). A road surface detection mechanism (4) is provided in the middle of the detection frame (1). A pressure sensing panel (5) is horizontally attached to the rear end of the detection frame (1). The connecting rod bracket (3) includes two support arms (301) with one end connected to the adjusting support rod (2). The two support arms (301) are connected in the middle by a connecting rod (302). The other end of the support arm (301) is provided with a guide groove (303). The support arm (301) is movably connected to a pressure rod (304) at one end away from the adjusting support rod (2). The bottom end of the pressure rod (304) is fixedly connected to a detection wheel (305). The bottom end of the middle part of the support arm (301) is fixedly connected to one end of a return spring (306), and the other end of the return spring (306) is fixedly connected to the bottom end of the detection frame (1). The support arm (301), connecting rod (302) and pressure rod (304) form a movable linkage structure, and the pressure rod (304) is parallel to the central axis of the adjusting support rod (2). Meanwhile, the support arm (301) forms an elastic structure through the return spring (306). The road surface detection mechanism (4) includes a transmission rod (401) that runs through the inside of the detection frame (1). The bottom end of the transmission rod (401) is hinged to the middle part of the feedback rod (402). Both ends of the feedback rod (402) are movably connected to feedback wheels (403). The top end of the transmission rod (401) is hinged to one end of the telescopic arm (404), and the other end of the telescopic arm (404) is hinged to a pressure sensor (405). A positioning rod (406) is horizontally inserted through the middle of the telescopic arm (404). The two ends of the positioning rod (406) are respectively inserted into the bottom end of the positioning plate (407). The top of the positioning plate (407) away from the positioning rod (406) is fixedly sleeved with the detection frame (1). The central axis of the transmission rod (401) is aligned with the central axis of the guide sleeve (103), and the transmission rod (401) and the telescopic arm (404) form a movable connecting rod. The central axis of the transmission rod (401) is parallel to the central axis of the pressure sensor (405). The telescopic arm (404) forms a rotating structure through the positioning rod (406), and the telescopic arm (404) and the positioning rod (406) form a lever structure.

2. The road surface smoothness measuring device for road inspection according to claim 1, characterized in that: The detection frame (1) includes a support base plate (101). Support plates (102) are fixedly connected to both sides of the bottom of the support base plate (101) by bolts. A guide sleeve (103) is vertically inserted through the front end of the support base plate (101). The top two sides of the support base plate (101) are fixedly connected to the bottom of the support rod (104). The top ends of the two support rods (104) are fixedly connected to the bottom of both sides of the top plate (105).

3. The road surface smoothness measuring device for road inspection according to claim 2, characterized in that: The support plates (102) are symmetrically distributed about the vertical center line of the support substrate (101), and the support plates (102) are inclined structures, and the support substrate (101) and the top plate (105) are parallel to each other.

4. The road surface smoothness measuring device for road inspection according to claim 1, characterized in that: The adjusting support rod (2) includes a positioning sleeve (201) that is sleeved on one side of the detection frame (1). The side of the positioning sleeve (201) away from the detection frame (1) is fixedly connected to one end of the connecting seat (202). The other end of the connecting seat (202) is fixedly connected to a fixing sleeve (203). A support rod (204) is vertically penetrating the interior of the fixing sleeve (203).

5. The road surface smoothness measuring device for road inspection according to claim 4, characterized in that: The support rod (204) has a guide groove vertically distributed in the middle, and the support rods (204) are symmetrically distributed about the vertical center line of the detection frame (1).

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