A road surface smoothness measuring device for engineering construction

Abstract

The present invention relates to the technical field of engineering construction, and specifically discloses a road surface flatness measuring device for engineering construction, comprising: an eight-wheel instrument, which measures the flatness of the road surface; a detection mechanism, which is installed in an eight-wheel instrument bracket and detects the friction coefficient of the road surface before the device is operated; the present invention pre-detects the road surface friction coefficient through an adjustment mechanism, and the adjustment mechanism dynamically adjusts the position of a pressure sensor and the ground clearance of a detection wheel according to the friction coefficient; a fixed motor is started to drive a rotating ring to rotate through a rotating roller and a synchronous belt, thereby driving a second screw to rotate; and the movement of a second movable member can drive a support seat of the eight-wheel instrument to move up and down, thereby adjusting the ground clearance of the detection wheel, effectively compensating for data deviation caused by wear of the detection wheel, and improving the accuracy and stability of the measurement result.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, in particular to a road surface flatness measuring device for engineering construction. Background Art

[0002] During road construction, road surface smoothness is one of the key indicators for measuring project quality, directly affecting vehicle driving comfort, safety, and road surface service life. Currently, commonly used road surface smoothness measuring devices, such as eight-wheel meters, often only detect road surface smoothness during the measurement process, ignoring the interference of factors such as the road surface friction coefficient and slope on the measurement results. For example, roads with different friction coefficients will result in different contact pressures and degrees of wear between the measuring wheel and the road surface, thereby affecting the accuracy of data collected by the pressure sensor; due to the effect of gravity on uphill and downhill sections, the pressure on the measuring wheel changes, which can also lead to measurement errors.

[0003] The existing road surface roughness measurement device for engineering construction is not convenient to deal with the above-mentioned interference factors, resulting in large deviations in the measurement results and making it difficult to meet the quality inspection requirements of high-precision engineering construction. To this end, we propose a road surface roughness measurement device for engineering construction. Summary of the Invention

[0004] The purpose of the present invention is to provide a road surface smoothness measuring device for engineering construction, so as to solve the problem raised in the above background technology that during the measurement process, only the road surface smoothness is often detected, and the interference of factors such as road surface friction coefficient and slope on the measurement results is ignored.

[0005] To achieve the above object, the present invention provides the following technical solutions: a road surface flatness measuring device for engineering construction, comprising: an eight-wheel instrument,

[0006] Eight-wheel instrument, which measures the smoothness of the road surface;

[0007] The detection mechanism is installed in the eight-wheel instrument bracket and detects the friction coefficient of the road surface before the device is put into operation;

[0008] The adjustment mechanism is installed in the eight-wheel instrument bracket. The adjustment mechanism controls the position of the eight-wheel instrument pressure sensor and the height of the eight-wheel instrument detection wheel from the ground according to the size of the friction coefficient detected by the detection mechanism. When the road friction coefficient increases, the position of the pressure sensor gradually moves downward as the movement path of the eight-wheel instrument increases, which is used to compensate for the data deviation caused by the movement and wear of the eight-wheel instrument detection wheel;

[0009] The judgment mechanism is installed in the eight-wheel instrument bracket. The judgment mechanism judges the uphill and downhill angles of the road surface. The judgment mechanism adjusts the position of the pressure sensor according to the slope of the road surface. When it is in a downhill section, the pressure of the pressure sensor and the eight-wheel instrument detection wheel is adaptively reduced according to the size of the slope. When it is in an uphill section, the pressure of the pressure sensor and the eight-wheel instrument detection wheel is adaptively increased according to the size of the slope.

[0010] Among them, the detection mechanism includes a first screw rod rotatably connected to the inside of the eight-wheel instrument bracket, one end of the first screw rod is fixedly connected to the first rotating part, the surface of the first screw rod is slidably connected to the first movable part, one end of the first movable part is fixedly connected to the connecting part, a resistance sensor is arranged inside the connecting part, the end of the connecting part close to the resistance sensor is fixedly connected to the first connecting rod, and one end of the first connecting rod is fixedly connected to the friction plate.

[0011] Among them, the adjustment mechanism includes a fixed motor fixedly connected to the inside of the eight-wheel instrument bracket, the output end of the fixed motor is fixedly connected to a rotating roller, one end of the rotating roller is rotatably connected to a second rotating member, the surface of the second rotating member is sleeved with a synchronous belt, a rotating ring is sleeved on one side of the inside of the synchronous belt, the top of the rotating ring is fixedly connected to a fixed sleeve, the fixed sleeve is rotatably connected to the eight-wheel instrument bracket, the inside of the fixed sleeve is fixedly connected to a second screw rod, the surface of the second screw rod is slidably connected to a second moving member, one end of the second moving member is fixedly connected to a second connecting rod, and the second connecting rod is fixedly connected to the upper part of the eight-wheel instrument support seat.

[0012] Among them, an arc-shaped plate is fixedly connected to one side of the eight-wheel instrument support seat, an electromagnet is arranged inside the arc-shaped plate, a synchronization rod is fixedly connected to the surface of the electromagnet, the synchronization rod is fixedly connected to the surface of the eight-wheel instrument pressure sensor, and one end of the synchronization rod is fixedly connected to a compression spring, which is fixedly connected to the inside of the arc-shaped plate.

[0013] Among them, the judgment mechanism includes a placement slot fixedly connected to the inside of the eight-wheel instrument bracket, a fixed tube is fixedly connected to the inside of the placement slot, a moving ball is slidably connected to the inside of the fixed tube, and an infrared sensor is fixedly connected to the side of the placement slot close to the fixed tube.

[0014] Among them, a switching mechanism is provided at the bottom of the eight-wheel instrument bracket, and the switching mechanism switches between the surface of the rotating roller and the first rotating member and the second rotating member.

[0015] Among them, the switching mechanism includes a placement box fixedly connected to the bottom of the eight-wheel instrument bracket, an electric push rod fixedly connected to the inside of the placement box, one end of the electric push rod fixedly connected to a movable plate, one end of the movable plate rotatably connected to a limiting member, one side of the limiting member fixedly connected to a fixed spring, one end of the fixed spring fixedly connected to a limiting block, and one side of the limiting member is provided with a first empty slot adapted to the limiting block.

[0016] The first rotating member is rotatably connected to the surface of the rotating roller, and a second slot adapted to the limiting member is provided inside the first rotating member.

[0017] The limiting member is slidably connected to the surface of the rotating roller, and the surface of the rotating roller is provided with a sliding groove adapted to the limiting member.

[0018] Among them, a placement plate is fixedly connected to one side of the eight-wheel instrument bracket, and a control device is fixedly connected inside the placement plate.

[0019] The present invention has at least the following beneficial effects:

[0020] The present invention pre-detects the road surface friction coefficient through an adjustment mechanism, and dynamically adjusts the position of the pressure sensor and the height of the detection wheel from the ground according to the friction coefficient. The fixed motor is started to drive the rotating ring to rotate through the rotating roller and the synchronous belt, thereby driving the second screw to rotate. The movement of the second moving member can drive the eight-wheel instrument support base to move up and down, thereby adjusting the height of the detection wheel from the ground, effectively compensating for data deviation caused by wear of the detection wheel, and improving the accuracy and stability of the measurement results.

[0021] The present invention monitors the road surface slope in real time through a judgment mechanism, and automatically adjusts the pressure of the pressure sensor and the detection wheel according to the slope, eliminating the interference of the slope on the measurement result, so that the measurement data can more truly reflect the actual situation of the road surface flatness.

[0022] The present invention uses a switching mechanism to realize the switching of power connections between the rotating roller and different mechanisms, thereby improving the functional integration and flexibility of the device and meeting the needs of various measurement scenarios. At the same time, the control device realizes automatic control of the entire measurement process, is easy to operate, and greatly improves measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 It is a main schematic diagram of the present invention;

[0025] Figure 3 It is a top view schematic diagram of the present invention;

[0026] Figure 4 This is a partial cross-sectional schematic diagram of the eight-wheel instrument of the present invention;

[0027] Figure 5 It is a planar schematic diagram of the detection mechanism of the present invention;

[0028] Figure 6 This is a schematic top view of the switching mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of point A of the present invention;

[0030] Figure 8 This is a schematic diagram of point B of the present invention;

[0031] Figure 9 This is a schematic diagram of point C of the present invention.

[0032] In the figure: 1. eight-wheel instrument; 2. detection mechanism; 21. first screw rod; 22. first rotating member; 23. first moving member; 24. connecting member; 25. resistance sensor; 26. first connecting rod; 27. friction plate; 3. adjustment mechanism; 31. fixed motor; 32. rotating roller; 33. second rotating member; 34. synchronous belt; 35. rotating ring; 36. fixed sleeve; 37. second screw rod; 38. second moving member; 39. second connecting rod; 310. arc plate; 311. electromagnet; 312. synchronous rod; 313. compression spring; 4. judgment mechanism; 41. placement slot; 42. fixed tube; 43. moving ball; 44. infrared sensor; 5. switching mechanism; 51. placement box; 52. electric push rod; 53. moving plate; 54. limiting member; 55. fixed spring; 56. limiting block; 6. placement plate; 7. control device. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Example 1

[0035] See also Figures 1 to 9 The present invention provides a technical solution: a road surface flatness measuring device for engineering construction, comprising: an eight-wheel instrument 1,

[0036] Eight-wheel instrument 1, eight-wheel instrument 1 measures the smoothness of the road surface;

[0037] Detection mechanism 2, which is installed in the bracket of the eight-wheel instrument 1, and detects the friction coefficient of the road surface before the device is put into operation;

[0038] The adjusting mechanism 3 is installed in the bracket of the eight-wheel instrument 1. The adjusting mechanism 3 controls the position of the pressure sensor of the eight-wheel instrument 1 and the ground clearance of the detection wheel of the eight-wheel instrument 1 according to the magnitude of the friction coefficient detected by the detection mechanism 2. When the road friction coefficient increases, the position of the pressure sensor gradually moves downward as the movement path of the eight-wheel instrument 1 increases, which is used to compensate for the data deviation caused by the movement and wear of the detection wheel of the eight-wheel instrument 1;

[0039] The judging mechanism 4 is installed in the bracket of the eight-wheel instrument 1. The judging mechanism 4 judges the uphill and downhill angles of the road surface. The judging mechanism 4 adjusts the position of the pressure sensor according to the slope of the road surface. When it is in a downhill section, the pressure sensor and the eight-wheel instrument 1 detect the size of the wheel pressure adaptively reduced according to the size of the slope. When it is in an uphill section, the pressure sensor and the eight-wheel instrument 1 detect the size of the wheel pressure adaptively increased according to the size of the slope.

[0040] The detection mechanism 2 includes a first screw rod 21 rotatably connected to the inside of the bracket of the eight-wheel instrument 1, one end of the first screw rod 21 is fixedly connected to the first rotating member 22, the surface of the first screw rod 21 is slidably connected to the first moving member 23, one end of the first moving member 23 is fixedly connected to the connecting member 24, a resistance sensor 25 is arranged inside the connecting member 24, the end of the connecting member 24 close to the resistance sensor 25 is fixedly connected to the first connecting rod 26, and one end of the first connecting rod 26 is fixedly connected to the friction plate 27.

[0041] The detection mechanism 2 is installed in the bracket of the eight-wheel instrument 1, and the friction coefficient of the road surface is detected before the device is operated. The first screw rod 21 can be driven to rotate by rotating the first rotating member 22. When the first screw rod 21 rotates, the first movable member 23 can move along the axis of the screw rod. One end of the first movable member 23 is fixedly connected to a connecting member 24. The resistance sensor 25 arranged inside the connecting member 24 is used to detect the resistance generated when the friction plate 27 contacts the road surface. The resistance sensor 25 adopts a pressure-variable force sensor, which is convenient for detecting the magnitude of the force. The magnitude of the resistance is related to the friction coefficient of the road surface. The friction plate 27 adopts a wear-resistant material that is compatible with common road materials. It can stably contact the road surface and accurately detect the friction coefficient. During actual detection, the friction plate 27 is lowered to fit the road surface by controlling the rotation of the first screw rod 21. As the eight-wheel instrument 1 moves, the resistance sensor 25 collects the resistance data of the friction plate 27, transmits it to the control device 7 for processing, and calculates the road surface friction coefficient.

[0042] The adjusting mechanism 3 includes a fixed motor 31 fixedly connected to the inside of the bracket of the eight-wheel instrument 1, the output end of the fixed motor 31 is fixedly connected to a rotating roller 32, one end of the rotating roller 32 is rotatably connected to a second rotating member 33, the surface of the second rotating member 33 is sleeved with a synchronous belt 34, a rotating ring 35 is sleeved on one side of the inside of the synchronous belt 34, the top of the rotating ring 35 is fixedly connected to a fixed sleeve 36, the fixed sleeve 36 is rotatably connected to the bracket of the eight-wheel instrument 1, the inside of the fixed sleeve 36 is fixedly connected to a second screw rod 37, the surface of the second screw rod 37 is slidably connected to a second moving member 38, one end of the second moving member 38 is fixedly connected to a second connecting rod 39, and the second connecting rod 39 is fixedly connected to the upper part of the support seat of the eight-wheel instrument 1.

[0043] An arc-shaped plate 310 is fixedly connected to one side of the support seat of the eight-wheel instrument 1, an electromagnet 311 is arranged inside the arc-shaped plate 310, a synchronization rod 312 is fixedly connected to the surface of the electromagnet 311, the synchronization rod 312 is fixedly connected to the surface of the pressure sensor of the eight-wheel instrument 1, and one end of the synchronization rod 312 is fixedly connected to a compression spring 313, which is fixedly connected to the inside of the arc-shaped plate 310.

[0044] The adjustment mechanism 3 is installed in the bracket of the eight-wheel instrument 1. According to the size of the friction coefficient detected by the detection mechanism 2, the position of the pressure sensor of the eight-wheel instrument 1 and the height of the detection wheel of the eight-wheel instrument 1 from the ground are controlled. After the fixed motor 31 is started, it drives the rotating roller 32 to rotate, and the rotating ring 35 cooperates with the synchronous belt 34 to realize transmission. When the rotating ring 35 rotates, it drives the second screw rod 37 to rotate. When the second screw rod 37 rotates, the second moving member 38 can move along the axis of the screw rod. The movement of the second moving member 38 can drive the support seat of the eight-wheel instrument 1 to move up and down, thereby adjusting the height of the detection wheel from the ground. When the friction coefficient of the road surface increases, the control device 7 controls the electromagnet 311 to generate magnetic force according to the preset algorithm, and drives the pressure sensor downward through the synchronous rod 312, so that the position of the pressure sensor gradually moves downward as the moving path of the eight-wheel instrument 1 increases, which is used to compensate for the data deviation caused by the wear of the detection wheel of the eight-wheel instrument 1 and ensure the accuracy of the measurement data.

[0045] The judgment mechanism 4 includes a placement slot 41 fixedly connected to the inside of the eight-wheel instrument 1 bracket, a fixed tube 42 is fixedly connected to the inside of the placement slot 41, a moving ball 43 is slidably connected to the inside of the fixed tube 42, and an infrared sensor 44 is fixedly connected to the side of the placement slot 41 close to the fixed tube 42.

[0046] The judging mechanism 4 is installed in the bracket of the eight-wheel instrument 1, and is used to judge the uphill and downhill angles of the road surface and adjust the position of the pressure sensor according to the slope of the road surface. When the device is on a road surface with different slopes, the moving ball 43 will roll in the fixed tube 42 due to the action of gravity. The infrared sensor 44 obtains the road slope information by detecting the position change of the moving ball 43 and transmits the data to the control device 7. According to the preset program, the control device 7 adaptably reduces the magnetic force of the electromagnet 311 according to the size of the slope when it is judged to be in a downhill section, so that the compression spring 313 pushes the synchronization rod 312 to move upward, reducing the size of the pressure sensor and the eight-wheel instrument 1 detection wheel pressure; when it is in an uphill section, the magnetic force of the electromagnet 311 is adaptively increased according to the size of the slope, attracting the synchronization rod 312 to drive the pressure sensor downward, increasing the size of the pressure sensor and the eight-wheel instrument 1 detection wheel pressure, thereby eliminating the influence of the slope on the measurement result.

[0047] A switching mechanism 5 is provided at the bottom of the bracket of the eight-wheel instrument 1 , and the switching mechanism 5 switches between the surface of the rotating roller 32 and the first rotating member 22 and the second rotating member 33 .

[0048] The switching mechanism 5 includes a placement box 51 fixedly connected to the bottom of the eight-wheel instrument 1 bracket, and an electric push rod 52 is fixedly connected to the inside of the placement box 51. One end of the electric push rod 52 is fixedly connected to a moving plate 53, and one end of the moving plate 53 is rotatably connected to a limiting member 54. One side of the limiting member 54 is fixedly connected to a fixing spring 55, and one end of the fixing spring 55 is fixedly connected to a limiting block 56. A first empty slot adapted to the limiting block 56 is provided on one side of the limiting member 54.

[0049] The first rotating member 22 is rotatably connected to the surface of the rotating roller 32 . A second slot adapted to the limiting member 54 is defined inside the first rotating member 22 .

[0050] The limiting member 54 is slidably connected to the surface of the rotating roller 32 , and a sliding groove adapted to the limiting member 54 is provided on the surface of the rotating roller 32 .

[0051] The switching mechanism 5 is located at the bottom of the bracket of the eight-wheel instrument 1 and is used to switch between the surface of the rotating roller 32 and the first rotating member 22 and the second rotating member 33. When the switching function is required, the electric push rod 52 pushes the movable plate 53, driving the limiting member 54 to slide along the sliding groove on the surface of the rotating roller 32, so that the limiting member 54 engages or disengages with the empty groove of the first rotating member 22 or the second rotating member 33, realizing the switching of the power connection between the rotating roller 32 and the detection mechanism 2 or the adjustment mechanism 3 to meet different working requirements.

[0052] A placement plate 6 is fixedly connected to one side of the bracket of the eight-wheel instrument 1, and a control device 7 is fixedly connected to the interior of the placement plate 6.

[0053] The control device 7 has a built-in microprocessor, a data processing module, a control module, etc., which is used to receive the data collected by the detection mechanism 2 and the judgment mechanism 4, analyze and process the data, and control the operation of the adjustment mechanism 3, the switching mechanism 5 and other components according to the preset algorithm and program to realize the automation and intelligent operation of the entire measuring device.

[0054] Example 2

[0055] like Figures 1 to 3 In this second embodiment, the other structures remain unchanged. The only difference from the first embodiment is that a mounting bracket is provided on top of the bracket of the eight-wheel measuring instrument 1. The bracket secures the mounting bracket in place, and movement of the eight-wheel measuring instrument 1 drives the mounting bracket with it. The mounting bracket supports the measuring device, ensuring its stable position and preventing it from moving due to road slope.

[0056] The above electronic devices are all powered by internal batteries (not shown) or external wires (not shown).

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A road surface roughness measuring device for engineering construction, comprising: Eight-wheeled ceremony, An eight-wheel instrument for measuring the smoothness of a road surface; Its characteristics are: A detection mechanism, the detection mechanism is installed in the eight-wheel instrument bracket, and the detection mechanism detects the friction coefficient of the road surface before the device is operated; An adjustment mechanism is installed in the eight-wheel instrument bracket. The adjustment mechanism controls the position of the eight-wheel instrument pressure sensor and the height of the eight-wheel instrument detection wheel from the ground according to the friction coefficient detected by the detection mechanism. When the road friction coefficient increases, the position of the pressure sensor gradually moves downward as the movement path of the eight-wheel instrument increases, thereby compensating for data deviation caused by the movement and wear of the eight-wheel instrument detection wheel; A judgment mechanism is installed in the eight-wheel instrument bracket. The judgment mechanism judges the uphill and downhill angles of the road surface and adjusts the position of the pressure sensor according to the road slope. When on a downhill section, the pressure of the pressure sensor and the eight-wheel instrument detection wheel is adaptively reduced according to the slope size. When on an uphill section, the pressure of the pressure sensor and the eight-wheel instrument detection wheel is adaptively increased according to the slope size. The detection mechanism includes a first screw rod rotatably connected to the interior of the eight-wheel instrument bracket, one end of the first screw rod is fixedly connected to a first rotating member, a surface of the first screw rod is slidably connected to a first moving member, one end of the first moving member is fixedly connected to a connecting member, a resistance sensor is provided inside the connecting member, an end of the connecting member close to the resistance sensor is fixedly connected to a first connecting rod, and one end of the first connecting rod is fixedly connected to a friction plate; The adjusting mechanism includes a fixed motor fixedly connected to the inside of the eight-wheel instrument bracket, an output end of the fixed motor is fixedly connected to a rotating roller, one end of the rotating roller is rotatably connected to a second rotating member, a surface of the second rotating member is sleeved with a synchronous belt, a rotating ring is sleeved on one side of the interior of the synchronous belt, a fixed sleeve is fixedly connected to the top of the rotating ring, the fixed sleeve is rotatably connected to the eight-wheel instrument bracket, a second screw rod is fixedly connected to the inside of the fixed sleeve, a second moving member is slidably connected to the surface of the second screw rod, one end of the second moving member is fixedly connected to a second connecting rod, and the second connecting rod is fixedly connected to the upper part of the eight-wheel instrument support seat; The judgment mechanism includes a placement slot fixedly connected to the inside of the eight-wheel instrument bracket, a fixed tube fixedly connected to the inside of the placement slot, a moving ball slidably connected to the inside of the fixed tube, and an infrared sensor fixedly connected to the side of the placement slot close to the fixed tube.

2. The road surface roughness measuring device for engineering construction according to claim 1, characterized in that: An arc-shaped plate is fixedly connected to one side of the eight-wheel instrument support seat, an electromagnet is arranged inside the arc-shaped plate, a synchronization rod is fixedly connected to the surface of the electromagnet, the synchronization rod is fixedly connected to the surface of the eight-wheel instrument pressure sensor, and one end of the synchronization rod is fixedly connected to a compression spring, which is fixedly connected to the inside of the arc-shaped plate.

3. The road surface roughness measuring device for engineering construction according to claim 1, characterized in that: A switching mechanism is provided at the bottom of the eight-wheel instrument bracket, and the switching mechanism switches between the surface of the rotating roller and the first rotating member and the second rotating member.

4. The road surface roughness measuring device for engineering construction according to claim 3, characterized in that: The switching mechanism includes a placement box fixedly connected to the bottom of the eight-wheel instrument bracket, an electric push rod fixedly connected to the interior of the placement box, one end of the electric push rod fixedly connected to a movable plate, one end of the movable plate rotatably connected to a limiting member, one side of the limiting member fixedly connected to a fixing spring, one end of the fixing spring fixedly connected to a limiting block, and one side of the limiting member is provided with a first empty slot adapted to the limiting block.

5. The road surface roughness measuring device for engineering construction according to claim 4, characterized in that: The first rotating member is rotatably connected to the surface of the rotating roller, and a second slot adapted to the limiting member is provided inside the first rotating member.

6. The road surface roughness measuring device for engineering construction according to claim 5, characterized in that: The limiting member is slidably connected to the surface of the rotating roller, and the surface of the rotating roller is provided with a sliding groove adapted to the limiting member.

7. The road surface roughness measuring device for engineering construction according to claim 1, characterized in that: A placement plate is fixedly connected to one side of the eight-wheel instrument bracket, and a control device is fixedly connected inside the placement plate.

Images