A road deflection measuring device

Abstract

Base comprises support, castor, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring or rubber cushion, and castor is arranged on the pin of base bottom four, to carry mobile handler location.

Description

Technical Field

[0001] The present invention relates to the field of detection equipment for detecting roadbeds and pavements of municipal or highway projects, and in particular to a road deflection measuring device. Background Art

[0002] At present, research on roadbed and pavement rebound deflection detection methods mostly focuses on improving deflection detection methods other than the Beckmann beam method. There are few improvements to the Beckmann beam method for detecting roadbed and pavement deflection, and it has the characteristics of not being able to achieve full automation and being cumbersome. Summary of the Invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a road deflection measuring device.

[0004] According to a first aspect of the present invention, an embodiment of the present invention provides a road deflection measuring device, comprising: a platform vehicle, two Beckmann beams, a sliding assembly, an inclined strut, a transverse axis, a loading vehicle, a transverse positioning rod, a take-up assembly, a connecting rod and a traction rope, a front wheel group and a rear wheel group are provided at the bottom of the platform vehicle, the front wheel group and / or the rear wheel group are connected by a connecting shaft, two movable supports are provided on the top surface of the platform vehicle, the two movable supports can move to the left and right sides of the moving direction of the platform vehicle, and the two movable supports are arranged in a vertical direction along the moving direction of the platform vehicle, and the two Beckmann beams are connected to the platform vehicle through the movable supports; the sliding assembly is provided on the platform vehicle, the sliding assembly includes a sliding part, the sliding part can slide along the moving direction of the platform vehicle, a take-up wheel is provided on one side of the sliding part, and the sliding part is connected to the connecting shaft through a transmission mechanism; the inclined strut is located on the platform vehicle, and the inclined strut is provided on the left and right sides of the sliding assembly; Material toggling mechanism, its both ends are connected with the said sliding arm, and its both ends are connected with the up-down knob.The said sliding arm is connected with the said sliding arm to the up-down knob.

[0005] Beneficial effect: This road deflection measuring device includes: a platform car, two Beckmann beams, a sliding assembly, an inclined strut, a transverse axis, a loading car, a transverse positioning rod, a connecting rod and a traction rope. A front wheel group and a rear wheel group are provided at the bottom of the platform car, and the front wheel group and / or the rear wheel group are connected by a connecting axis. Two movable supports are provided on the top surface of the platform car. The two movable supports can move to the left and right sides of the moving direction of the platform car, and the two movable supports are arranged in a vertical direction along the moving direction of the platform car. The two Beckmann beams are connected to the platform car through a movable support; the sliding assembly is provided on the platform car, and the sliding assembly includes a sliding part, which can slide along the moving direction of the platform car, and a take-up wheel is provided on one side of the sliding part, and the sliding part is connected to the connecting shaft through a transmission mechanism; the inclined strut is located on the platform car, and the inclined strut is provided on the left and right sides of the sliding assembly; the transverse axis is provided in a vertical direction along the moving direction of the platform car, and the transverse axis passes through the sliding part and its two ends are respectively connected to the two inclined struts. The support rod is connected, and the sliding part drives the inclined support rod to move; the loading car is arranged on the tail of the platform car, and a flat bracket is provided on the outside of the tail baffle of the loading car, and a first slide groove is provided at the bottom of the flat bracket, and the flat bracket is provided with a pulley arranged on the same side as the take-up wheel; the transverse positioning rod can slide along the first slide groove, and a fixed rope ring is provided on the transverse positioning rod; one end of the connecting rod is connected to the transverse positioning rod, and the other end of the connecting rod is connected to the sliding part, and the take-up assembly is arranged at the front end of the sliding part, and through the connecting rod, it passes through the bearing arranged in the center of the front end of the sliding block, so that the take-up wheel on one side is connected to the transmission mechanism, and one end of the traction rope is connected to the take-up wheel, and the traction rope passes around the pulley on the flat bracket of the loading car, and the other end is connected to the fixed rope ring on the transverse positioning rod. This measuring device does not require people to lift the Beckman beam, saves labor costs, and improves safety. The Beckman beam automatically follows the vehicle, improves work efficiency, is reusable, and saves costs.

[0006] According to the road deflection measuring device described in the embodiment of the first aspect of the present invention, the sliding assembly includes a second sliding groove and a sliding block arranged in the center of the platform vehicle, and the sliding block is arranged in the second sliding groove to form the sliding portion.

[0007] According to the road deflection measuring device described in the embodiment of the first aspect of the present invention, the transmission mechanism includes a first gear, a second gear, a transmission chain and a rotating gear, the first gear is arranged at the terminal end of the second slide groove, the second gear is arranged on the connecting shaft, the transmission chain connects the first gear and the second gear, the rotating gear is arranged at one end of the slider, and the rotating gear engages and rotates with the first gear.

[0008] According to the road deflection measuring device described in the embodiment of the first aspect of the present invention, a limiting groove is provided at the bottom of the Beckmann beam, and the inclined strut can enter the limiting groove when driven by the sliding portion.

[0009] According to the road deflection measuring device described in the embodiment of the first aspect of the present invention, the limiting groove is configured to be welded on the Beckmann beam, and the limiting groove includes two protruding ends, and a recessed groove is formed between the two protruding ends.

[0010] According to the road deflection measuring device described in the embodiment of the first aspect of the present invention, the connecting rod includes an inclined rod and a horizontal rod, one end of the inclined rod is connected to one end of the horizontal rod, the inclined rod can only rotate in a vertical plane and cannot rotate horizontally, the other end of the inclined rod is connected to the transverse positioning rod, and the other end of the horizontal rod is connected to the sliding part.

[0011] According to the road deflection measuring device described in the embodiment of the first aspect of the present invention, one end of the inclined rod and one end of the horizontal rod are movably hinged.

[0012] According to the road deflection measuring device described in the embodiment of the first aspect of the present invention, the planar bracket includes two vertical rods and two transverse rods, the two transverse rods are respectively located at the upper and lower ends of the vertical rod, the transverse rod at the lower end is provided with the pulley on the same side as the take-up wheel, and the first slide groove is provided at the bottom of each vertical rod, and the first slide groove is arranged at an angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a top view of a road deflection measuring device according to an embodiment of the present invention;

[0015] Figure 2 This is a front view of a road deflection measuring device according to an embodiment of the present invention;

[0016] Figure 3 This is a front view of the measurement process of the road deflection measuring device according to an embodiment of the present invention;

[0017] Figure 4 This is the second main view of the measurement process of the road deflection measurement device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] Reference Figures 1 to 4A road deflection measuring device includes: a platform vehicle 100, two Beckmann beams 200, a sliding assembly 300, an inclined support rod 400, a transverse axis 500, a loading vehicle 600, a transverse positioning rod 700, a connecting rod 800, a take-up assembly and a traction rope 900. The bottom of the platform vehicle 100 is provided with a front wheel group and a rear wheel group, and the front wheel group and / or the rear wheel group are connected by a connecting shaft 110. The top surface of the platform vehicle 100 is provided with two movable supports 120. The two movable supports 120 can move to the left and right sides of the moving direction of the platform vehicle 100 to ensure that the platform vehicle 100 drives the Beckmann beam 200 to move. , and the two movable supports 120 are arranged in a direction perpendicular to the moving direction of the platform vehicle 100, the two Beckman beams 200 are connected to the platform vehicle 100 through the movable supports 120, the sliding assembly 300 is arranged on the platform vehicle 100, the sliding assembly 300 includes a sliding portion 310, the sliding portion 310 can slide along the moving direction of the platform vehicle 100, a take-up wheel 320 is provided on one side of the sliding portion 310, and the sliding portion 310 is connected to the connecting shaft 110 through a transmission mechanism 350, the inclined support rod 400 is located on the platform vehicle 100, and the inclined support rod 400 is arranged on the left and right sides of the sliding assembly 300, The shaft 500 is arranged perpendicular to the moving direction of the platform vehicle 100, the horizontal shaft 500 passes through the sliding part 310 and is connected to the two inclined support rods 400 at both ends. The sliding part 310 slides to drive the inclined support rods 400 to move, so as to support the front end of the Beckman beam 200 to realize the lifting action, thereby ensuring that the Beckman beam 200 moves forward under the transportation of the platform vehicle 100. The loading vehicle 600 is arranged at the rear of the platform vehicle 100, and a plane bracket 610 is arranged on the outside of the tail baffle of the loading vehicle 600. The bottom of the plane bracket 610 is provided with a first slide groove 620, and the plane bracket is provided with a pulley arranged on the same side as the take-up wheel. The transverse positioning rod 700 can slide along the first slide groove 620. A fixed tether ring is provided on the transverse positioning rod 700. One end of the connecting rod 800 is connected to the transverse positioning rod 700, and the other end of the connecting rod 800 is connected to the sliding part 310. The take-up assembly is arranged at the front end of the sliding part 310, and passes through the bearing arranged in the center of the front end of the sliding block 310 through the connecting rod 800, so that the take-up wheel 320 on one side is connected to the transmission mechanism 350. One end of the traction rope 900 is connected to the take-up wheel, and passes around the pulley on the flat bracket of the loading vehicle, and the other end is connected to the fixed tether ring on the transverse positioning rod 700.

[0023] The Beckman beam 200 can adjust its relative position according to the changes in the distance between the two rear wheels of different loading vehicles 600, so that the Beckman beam 200 will not touch the wheels during the folding and lowering process. It can move forward with the platform vehicle 100 to the measuring point position, and automatically fall down when the loading vehicle 600 stops. The front end is inserted about 3-5 cm in front of the driving direction between the two rear wheels of the loading vehicle 600. Within 3 meters from the time the loading vehicle 600 stops to the time it moves forward, the Beckman beam system always remains stationary and is subjected to no more than 10N of force other than gravity.

[0024] In some embodiments, the sliding assembly 300 includes a second chute 330 and a slider 340 disposed in the center of the platform vehicle 100. The slider 340 is disposed in the second chute 330 to form a sliding portion 310. Furthermore, the transmission mechanism 350 includes a first gear, a second gear, a transmission chain, and a rotating gear. The first gear is disposed at the end of the second chute 330, the second gear is disposed on the connecting shaft 110, the transmission chain connects the first gear and the second gear, and the rotating gear is disposed on one side of the slider 340. The rotating gear meshes with the first gear and rotates. The transmission chain rotates under the drive of the second gear fixed on the connecting shaft 110, thereby driving the take-up wheel 320 to rotate, thereby achieving the take-up action. One end of the traction rope 900 is connected to the take-up wheel 320 fixed to the right end of the slider 340. The other end of the traction rope 900 passes around the pulley on the horizontal rod at the lower end of the planar support 610 and is fixed in the middle of the horizontal positioning rod 700. Through the take-up and pay-out action, the platform vehicle 100 drives the Beckman beam 200 to move with the platform vehicle 100.

[0025] Reference Figures 2 to 4 The bottom of the Beckman beam 200 is provided with a limiting groove 210, into which the inclined support rod 400 can enter under the drive of the sliding portion 310. Specifically, the limiting groove 210 is welded to the Beckman beam 200. The limiting groove 210 includes two protruding ends with a recessed groove formed between the two protruding ends. The limiting groove 210 enables the fixed inclined support rod 400 to move forward under the drive of the sliding portion 310 into the recessed groove, thereby stably supporting the Beckman beam and preventing the Beckman beam from sliding during the forward movement.

[0026] Reference Figures 1 to 4 The connecting rod 800 is vertically welded to the middle of the transverse positioning rod 700. The connecting rod 800 includes a tilting rod 810 and a horizontal rod 820. One end of the tilting rod 810 is connected to one end of the horizontal rod 820, and the other end of the tilting rod 810 is connected to the transverse positioning rod 700. The tilting rod can only rotate in the vertical plane and cannot rotate horizontally. The other end of the horizontal rod 820 is connected to the sliding part 310. Furthermore, one end of the tilting rod 810 is movably hinged to one end of the horizontal rod 820. The horizontal rod 820 and the tilting rod 810 are connected by a hinge chain to ensure that the connecting rod 800 can move up and down, and ensure that the sliding part 310 on the loading vehicle 600 and the platform vehicle 100 is flexibly connected, so as to eliminate the deformation and uneven fit that may be caused by the rigid connection or the uncertainty of the forward direction of the platform vehicle 100 and the Beckman beam 200 caused by the connection of the traction rope 900.

[0027] It is easy to understand that the planar support 610 includes two vertical rods and two transverse rods. The two transverse rods are respectively located at the upper and lower ends of the vertical rods. The transverse rod at the lower end is provided with a pulley on the same side as the take-up wheel. The bottom of each vertical rod is provided with a first slide 620, and the first slide 620 is set at an angle. Specifically, the vertical rod is hung on the outside of the rear baffle of the loading vehicle 600 and is connected to the loading vehicle 600 by bolts. The bottom of each vertical rod is welded with a fixed 120° first slide 620, which can ensure that the transverse positioning rod 700 can enter the first slide 620 during the take-up process, ensuring that the front end of the Beckman beam 200 will not deviate left and right during the take-up process and hit the dual rear wheels of the loading vehicle 600.

[0028] During the deflection test for road subgrade and pavement acceptance, the general test frequency is 1 point / 20m lane. The movement of the Beckmann beam between two adjacent measuring points requires the cooperation of four people. The Beckmann beam is inserted into the wheel gap of the loading vehicle, in line with the driving direction of the loading vehicle. The beam arm must not touch the tire. The Beckmann beam probe is placed at the measuring point (30-50) mm in front of the center of the wheel gap, occupying 80% of the number of people in the test.

[0029] This process can be divided into three steps according to actual needs:

[0030] The movement of the Beckmann beam between the two measuring points is achieved by setting up a platform vehicle 100, which carries the Beckmann beam and is driven by a traction rope 900 and a loading vehicle 600.

[0031] When the loader 600 arrives at the measuring point, the loader 600 stops and the Beckman beam probe is placed on the measuring point (30-50) mm in front of the center of the wheel gap. From a mechanical principle, a groove is set on the platform vehicle to fix the spacing of the Beckman beam base to adjust the relative spacing of the two Beckman beams to be equal to the spacing between the two rear wheels of the loader 600. At the same time, two inclined first chutes 620 are set at the rear of the loader 600. Through the transverse positioning rod 700, it is ensured that the front end of the Beckman beam does not touch the tire when entering the wheel gap. According to different projects and different changes in the spacing between the two rear wheels of the loader 600, the two Beckman beams can be inserted into the rear wheels at the same time. By drawing on the chute positioning principle and realizing the changes in the two degrees of freedom of up, down, front and back, the Beckman beam can be aligned with the direction of travel of the loader 600 without touching the wheels and accurately inserted between the rear wheels.

[0032] At this time, the transverse positioning rod 700, the connecting rod 800 and the sliding part 310 are rigidly connected. The loading cart 600 suddenly stops, and the platform cart 100 drives the Beckman beam 200 without braking. Due to the inertia, the sliding part 310 begins to slide and drives the fixed inclined support rod 400 to disengage from the limit groove 210. The Beckman beam 200 lacks support and falls to the ground and brakes the platform cart 100. By adjusting the front and rear distance of the limit groove 210 and the length of the second slide groove 330, the Beckman beam probe can be placed at a measuring point (30-50) mm in front of the center of the wheel gap.

[0033] From the time the loading vehicle starts to the time it drives out of the deflection influence range, which is generally more than 3m, the Beckman beam remains in place and is not touched by the vehicle. After the loading vehicle drives out of the deflection influence range of the measuring point, the front end of the Beckman beam gradually rises automatically and moves with the vehicle by relying on the platform where the rear end of the beam is located. When it reaches the measuring point position, the first gear and the rotating gear are separated, and the slider 340 is away from the first gear end. Therefore, the take-up wheel 320 can rotate freely. The process of the traction rope take-up wheel rotating to release the line can realize automatic line release within this 3m.

[0034] Moreover, a second slide groove 330 is provided in the center of the platform vehicle 100, and a slider 340 is provided in the middle of the second slide groove 330, which can slide back and forth to form a sliding part 310. A horizontal axis 500 is provided in the middle of the slider 340, which is perpendicular to the travel direction of the platform vehicle 100. Inclined support rods 400 are provided at both ends of the horizontal axis 500. A limiting groove 210 is provided at the Beckman beam 200 near the platform vehicle 100. By moving forward, the slider on the platform vehicle is driven to move along the second slide groove and move to the end position of the second slide groove on the platform vehicle 100. The inclined support rod enters the limiting groove of the Beckman beam 200, thereby raising the Beckman beam 200 and keeping it stable. After reaching the measuring point, the vehicle stops, and the connecting rod 800 pushes the slider 330 backward. The platform vehicle rushes forward under the action of inertia, causing the inclined support rod to disengage from the limiting groove, and the front end of the Beckman beam automatically falls 3-5 cm to the front end of the rear double wheels.

[0035] Principle of automatic retracting and releasing line: The horizontal axis 500 is a fixed horizontal axis, wherein the first gear is set on the left side of the horizontal axis 500, the end of the traction rope is fixed on the right side and a circular plate with a diameter of 3 times the pulley is set on the outside of the pulley to prevent the line from slipping off the outside of the axis when reeling in the line. The traction rope 900 starts from the axis, goes around the right side pulley of the horizontal rod at the lower end of the rear plane bracket and is connected to the end of the horizontal positioning rod 700. The first gear is welded on the left side of the terminal end of the second slide 330 of the platform vehicle 100, and is transmitted to the second gear through a transmission chain. When working, when the rotating gear is separated from the first gear, the traction rope can Free line release. When the distance between the traction rope and the rear wheel of the loading vehicle is greater than 3m at the front end probe position of the Beckman beam, the traction rope is just released. After that, the platform vehicle 100 remains stationary due to inertia, and the slider 340 is driven forward by the traction of the traction rope 900 and the transverse positioning rod 700 until the first gear and the rotating gear are engaged, and the line is started to be reeled in. After the line is reeled in, the loading vehicle 600 and the platform vehicle 100 move at the same speed. After reaching the measuring point, the platform vehicle 100 rushes forward due to inertia, and the connecting rod 800 pushes the slider 330 backward, and drives the two gears to separate and not affect each other.

[0036] After installation, this road deflection measurement device only requires a deflection vehicle driver and experimenters. There is no need to arrange additional personnel to lift the Beckman beam, saving 80% of labor costs. In addition, the Beckman beam automatically follows the vehicle and automatically lands for detection after arriving at the measuring point, thereby improving work efficiency. Since fewer people are required, the physical safety of personnel can be improved in environments with many dangerous factors, such as old road inspections and multi-disciplinary cross-construction sites. As long as the specifications of the standard loading vehicle provided by the project meet the standard requirements, it can be used for various projects in different regions and projects, and mainly relies on the loading vehicle's own power and braking to provide power, which can save energy.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the spirit of the present invention.

Claims

1. A road deflection measuring device, characterized in that: include: A platform vehicle is provided with a front wheel group and a rear wheel group at the bottom, the front wheel group and / or the rear wheel group are connected by a connecting shaft, and two movable supports are provided on the top surface of the platform vehicle, the two movable supports can move to the left and right sides of the moving direction of the platform vehicle, and the two movable supports are arranged in a direction perpendicular to the moving direction of the platform vehicle; Two Beckmann beams connected to the platform vehicle via the movable support; A sliding assembly is provided on the platform vehicle, the sliding assembly comprising a sliding portion capable of sliding along the moving direction of the platform vehicle, a take-up wheel being provided on one side of the sliding portion, and the sliding portion is connected to the connecting shaft via a transmission mechanism; An inclined support rod is located on the platform vehicle, and the inclined support rod is arranged on the left and right sides of the sliding assembly; A horizontal axis is arranged perpendicular to the moving direction of the platform vehicle, the horizontal axis passes through the sliding portion and has two ends connected to the two inclined support rods respectively, and the sliding portion slides to drive the inclined support rods to move; A loading vehicle is provided at the rear of the platform vehicle, a plane bracket is provided outside the rear baffle of the loading vehicle, a first slide groove is provided at the bottom of the plane bracket, and a pulley is provided on the same side as the take-up wheel; a transverse positioning rod capable of sliding along the first sliding groove, wherein the transverse positioning rod is provided with a fixed tether ring; a connecting rod, one end of which is connected to the transverse positioning rod, and the other end of which is connected to the sliding portion; The wire take-up assembly is arranged at the front end of the sliding part, and the wire take-up wheel on one side is connected to the transmission mechanism through the connecting rod passing through the bearing arranged in the center of the front end of the sliding part; as well as A traction rope, one end of which is connected to the take-up wheel and passes around the pulley on the planar support of the loading vehicle, and the other end is connected to the fixed tether ring on the transverse positioning rod.

2. The road deflection measuring device according to claim 1, characterized in that: The sliding assembly includes a second sliding groove and a sliding block arranged in the center of the platform vehicle. The sliding block is arranged in the second sliding groove to form the sliding part.

3. The road deflection measuring device according to claim 2, characterized in that: The transmission mechanism includes a first gear, a second gear, a transmission chain and a rotating gear. The first gear is arranged at the terminal end of the second slide groove, the second gear is arranged on the connecting shaft, the transmission chain connects the first gear and the second gear, and the rotating gear is arranged at one end of the slider, and the rotating gear engages and rotates with the first gear.

4. The road deflection measuring device according to claim 1, characterized in that: A limiting groove is provided at the bottom of the Beckmann beam, and the inclined support rod can enter the limiting groove under the drive of the sliding part.

5. The road deflection measuring device according to claim 4, characterized in that: The limiting groove is configured to be welded on the Beckmann beam, and the limiting groove includes two protruding ends, with a recessed groove formed between the two protruding ends.

6. The road deflection measuring device according to claim 1, characterized in that: The connecting rod includes an inclined rod and a horizontal rod. One end of the inclined rod is connected to one end of the horizontal rod. The inclined rod can only rotate in a vertical plane and cannot rotate horizontally. The other end of the inclined rod is connected to the transverse positioning rod, and the other end of the horizontal rod is connected to the sliding part.

7. The road deflection measuring device according to claim 6, characterized in that: One end of the tilting rod and one end of the horizontal rod are movably hinged.

8. The road deflection measuring device according to claim 1, characterized in that: The planar bracket includes two vertical rods and two transverse rods. The two transverse rods are respectively located at the upper and lower ends of the vertical rod. The pulley is provided on the same side of the transverse rod at the lower end and the take-up wheel. The first slide groove is provided at the bottom of the two vertical rods, and the first slide groove is inclined.

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