A concrete pavement thickness detection device used in bridge engineering

Abstract

The present invention discloses a device for detecting the thickness of a concrete pavement layer used in bridge engineering, and relates to the technical field of bridge construction. The present invention comprises a transfer cart, on the top of which a plurality of vertically arranged self-locking telescopic rods are fixedly installed, the telescopic ends of the self-locking telescopic rods are fixedly installed with support frames, and horizontal slide bars are slidably installed on the support frames, and a plurality of the horizontal slide bars are fixedly installed with mounting frames at one end away from the transfer cart, and the bottom of the plurality of mounting frames is provided with the same pavement layer thickness measuring assembly. The present invention sets a pavement layer thickness measuring assembly so that the lifting motor drives the bottom end of the measuring tube to contact the bridge deck, and the thickness of the pavement layer at the current point can be measured according to the scale line at the bottom end of the measuring tube, and at the same time, the concrete inside and outside the measuring tube are flush, so that construction personnel can simultaneously observe the height of the concrete layer on both sides of the measuring tube, and thus more intuitively and conveniently obtain the pavement layer thickness at the current point.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a device for detecting the thickness of a concrete pavement layer used in bridge engineering. Background Art

[0002] Bridge deck pavement refers to the protective layer laid on the bridge deck to prevent direct wear of the bridge deck by the wheels, spread the wheel load, and provide a smooth and non-slip driving surface for vehicles. Increasing the thickness of the bridge deck pavement generally does not enhance the overall stiffness of the bridge structure, but increases the dead load of the bridge. Especially for long-span bridges, the weight of the bridge deck pavement may have a significant impact on the economic efficiency of the bridge. Therefore, the thickness of the bridge deck pavement needs to be precisely controlled.

[0003] At present, a plumb line is often used in bridge engineering to erect a vertical scale rod in the paved concrete pavement to measure the thickness of the pavement. However, the newly laid concrete pavement has a certain fluidity, which leads to different thicknesses in different parts of the pavement. The scale rod can only measure the thickness data of a single point, but cannot reflect the uniformity of the concrete thickness around the measuring point. Therefore, a large number of repeated and multi-point measurements are required to more accurately measure the approximate thickness of each area of ​​the pavement. For this reason, a concrete pavement thickness detection device for bridge engineering is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the newly laid concrete pavement layer has a certain fluidity, which leads to different thicknesses in different parts of the pavement layer. The scale rod can only measure the thickness data of a single point, but cannot reflect the uniformity of the concrete thickness around the measuring point, resulting in the need for a large number of repeated and multi-point measurements to more accurately measure the approximate thickness of each area of ​​the pavement layer. The present invention provides a concrete pavement layer thickness detection device for use in bridge engineering.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A device for detecting the thickness of a concrete pavement layer used in bridge engineering comprises a transfer cart, a plurality of vertically arranged self-locking telescopic rods are fixedly mounted on the top of the transfer cart, a support frame is fixedly mounted on the telescopic ends of the self-locking telescopic rods, a horizontal slide rod is slidably mounted on each of the support frames, a mounting frame is fixedly mounted on the ends of the plurality of horizontal slide rods away from the transfer cart, and a common pavement thickness measuring assembly is provided at the bottom of the plurality of mounting frames;

[0007] The pavement thickness measuring assembly is used to measure the top thickness of the bridge concrete pavement. The pavement thickness measuring assembly includes a four-claw suspension frame fixedly mounted on the bottom of multiple mounting frames. The four bottom ends of the four-claw suspension frame are fixedly mounted with an inclined bottom support rod. The bottom end of each bottom support rod is provided with a thickness distribution measuring unit for roughly measuring the thickness of the surrounding concrete pavement layer. A universal ball is rotatably mounted at the top center position of the four-claw suspension frame. An outer screw barrel is fixedly mounted on the bottom of the universal ball. The top end of the outer screw barrel extends to the top of the universal ball. A lifting motor is fixedly mounted on the top of the universal ball. The output shaft of the lifting motor drives a flower-shaped rod to be installed. The bottom end of the flower-shaped rod extends to the interior of the outer screw barrel. The interior of the outer screw barrel is screwed with an inner screw tube. The flower-shaped rod is slidably inserted into the interior of the inner screw tube. The bottom end of the inner screw tube extends to the outside of the outer screw barrel and is fixedly mounted with a measuring tube. The bottom end side wall of the measuring tube is provided with multiple evenly distributed connecting grooves.

[0008] Furthermore, the thickness distribution measurement unit includes a measuring slide fixedly sleeved on the bottom end of the bottoming support rod, and a plurality of friction-reducing balls evenly distributed from top to bottom are rotatably installed on both sides of the measuring slide, and a floating sleeve is slidably sleeved on the friction-reducing balls, and a floating block is fixedly installed on the side wall of the floating sleeve.

[0009] Furthermore, a first positioning electric push rod perpendicular to the measuring slide is fixedly installed on the side wall of the floating sleeve, a positioning hole is opened on the side wall of the floating sleeve, and a fastening block is fixedly installed on the telescopic end of the first positioning electric push rod, and the position of the fastening block corresponds to the position of the positioning hole.

[0010] Furthermore, a sunshade weight disk is fixedly sleeved on the top end of the measuring tube.

[0011] Furthermore, a built-in electric push rod is fixedly installed inside the top end of the measuring tube, the telescopic end of the built-in electric push rod faces downward and is fixedly installed with a measuring push plate, a pressure sensor is fixedly installed inside the measuring push plate, an elastic part is fixedly installed at the bottom of the pressure sensor, a touch pressure plate is fixedly installed at the bottom of the elastic part, and the touch pressure plate is slidably installed inside the measuring push plate.

[0012] Furthermore, a plurality of vertically arranged placement racks are fixedly installed on the top of the four-claw suspension rack, and a positioning claw is rotatably installed on the top of each placement rack, and a same cork disk is placed between the plurality of positioning claws. A second vertically arranged positioning electric push rod is fixedly installed on the top of the lifting motor, and a positioning pin is fixedly installed on the telescopic end of the second positioning electric push rod. A plurality of balancing columns are fixedly installed on the top of the lifting motor, and the plurality of balancing columns surround the circumference of the second positioning electric push rod.

[0013] Furthermore, a fastening hole is provided on the top of each of the locking claws, and a positioning cone head bolt is inserted into the inside of each of the fastening holes.

[0014] Furthermore, a pedal hole is provided on the top of the transfer cart, a pedal is placed inside the pedal hole, and two vertically arranged return spring rods are fixedly installed on the top of the transfer cart, and the telescopic ends of the two return spring rods are fixedly connected to the two sides of the pedal respectively.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The present invention provides a pavement thickness measurement assembly, whereby four bottoming support rods contact the bridge deck, a four-claw suspension frame is supported on the bridge deck, and a lifting motor drives the bottom end of the measuring tube to contact the bridge deck. The thickness of the pavement layer at the current point can be measured based on the scale line at the bottom end of the measuring tube. At the same time, the concrete inside and outside the measuring tube are flush, allowing construction workers to simultaneously observe the height of the concrete layer inside and outside the measuring tube, thereby more intuitively and conveniently determining the pavement thickness at the current point.

[0017] 2. The present invention provides a thickness distribution measurement unit. When the pavement thickness measurement assembly descends and measures the thickness, the four measuring slides sink into the concrete, and the floating sleeves and floating blocks float upward, causing the floating sleeves to slide upward along the measuring slides until they stabilize. Based on the position of the floating sleeves and floating blocks on the measuring slides, the concrete thickness around the measuring point can be roughly calculated, thereby obtaining the distribution of the pavement thickness around the measuring point. This reduces the number of measurements and makes the pavement thickness distribution more intuitive.

[0018] 3. The present invention provides a first positioning electric push rod, so that when the floating sleeve and the floating block are stable and motionless, the first positioning electric push rod on one side of the floating sleeve starts to start, and the telescopic end of the first positioning electric push rod drives the fastening block to pass through the positioning hole and press on one side of the measuring slide, thereby locking the floating sleeve on the measuring slide. When the measurement is completed, the surveyor can retract the pavement thickness measurement assembly. At this time, each floating sleeve remains in the floating position, thereby displaying the thickness of the pavement layer around the point, facilitating subsequent measurement work;

[0019] 4. The present invention provides a sunshade weight disk, which is made of a material with a relatively high density. The sunshade weight disk can be located at the bottom of the outer screw barrel to act as a plumb line, so that the part from the lifting motor to the bottom end of the measuring tube remains vertical, and the measuring tube will not be skewed due to contact with the pavement layer, thereby affecting the measurement accuracy. At the same time, it can be located at the top of the measuring tube to prevent ambient light from directly hitting the measuring tube and affecting the reading of the point thickness data.

[0020] 5. The present invention provides a measuring push plate, so that the built-in electric push rod drives the measuring push plate to slide downward until the touch plate contacts the concrete. The telescopic end of the built-in electric push rod stops moving, so that the touch plate stays near the surface of the pavement layer. The measurement personnel can cross-verify the thickness data obtained by previously observing the stop position of the touch plate to improve the accuracy of the data. At the same time, the built-in electric push rod can drive the measuring push plate to push out the concrete remaining in the measuring tube, which facilitates the subsequent cleaning of the pavement thickness measurement component.

[0021] 6. The present invention provides a cork disc so that after the measuring tube contacts the bridge deck and positions itself, the second positioning electric push rod drives the positioning pin upward and inserts it into the cork disc, thereby fixing the pavement thickness measuring assembly. When the pavement thickness measuring assembly is recovered, the positioning pin and the cork disc can also maintain the angle used during measurement, thereby facilitating the measurement personnel to reproduce the thickness distribution of the pavement layer during measurement by combining the angle of the pavement thickness measuring assembly with the position of the thickness distribution measurement unit.

[0022] 7. The present invention provides positioning cone head bolts, so that after multiple measurements, each positioning cone head bolt can be screwed out from the upper surface of the cork disk and the fastening hole, and each positioning claw can be rotated to remove the cork disk. The cork disk can then be rotated horizontally, flipped vertically, or directly replaced. The cork disk is then reinstalled and each positioning cone head bolt is tightened to prevent pinholes caused by the previous positioning pin insertion from affecting the subsequent positioning accuracy.

[0023] 8. The present invention provides a pedal so that the combination of the transfer cart, the self-locking telescopic rod and the horizontal slide bar can be used to conveniently move the pavement thickness measuring assembly. The pavement thickness measuring assembly can be suspended above a point on one side of the pavement layer, thereby expanding the measurement range of the point. During measurement, the staff can step on the pedal so that the lower surface of the pedal contacts the road and other entities to position the transfer cart, thereby making the suspension of the pavement thickness measuring assembly more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the transfer cart of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the pavement thickness measuring component of the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the lifting motor and the measuring tube of the present invention;

[0028] Figure 5This is a schematic diagram of the internal three-dimensional structure of the outer spiral barrel and the inner spiral tube of the present invention;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the thickness distribution measurement unit of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the measuring tube of the present invention;

[0031] Figure 8 This is a schematic diagram of the internal three-dimensional structure of the measuring push plate of the present invention;

[0032] Figure 9 This is a schematic diagram of the three-dimensional structure of the placement rack and the cork tray of the present invention;

[0033] Figure numerals: 1. transfer cart; 2. self-locking telescopic rod; 3. support frame; 4. horizontal slide bar; 5. mounting frame; 6. four-claw suspension frame; 7. bottoming support rod; 8. universal ball; 9. outer screw barrel; 10. lifting motor; 11. flower-shaped rod; 12. inner screw tube; 13. measuring tube; 1301, connecting groove; 14. measuring slide; 15. friction-reducing ball; 16. floating sleeve; 17. floating block; 18. first positioning electric push rod; 19. sunshade weight hammer plate; 20. built-in electric push rod; 21. measuring push plate; 22. pressure sensor; 23. elastic member; 24. touch pressure plate; 25. placement frame; 26. positioning claw; 27. cork disk; 28. second positioning electric push rod; 29. ​​positioning pin; 30. balance column; 31. positioning cone head bolt; 32. stepping pedal; 33. reset spring rod. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. 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.

[0038] like Figures 1 to 9 As shown, a device for detecting the thickness of concrete pavement used in bridge engineering includes a transfer vehicle 1, as shown in FIG. Figure 2 As shown, a plurality of vertically arranged self-locking telescopic rods 2 are fixedly installed on the top of the transfer cart 1, and the telescopic ends of the self-locking telescopic rods 2 are fixedly installed with support frames 3, and horizontal slide bars 4 are slidably installed on the support frames 3. The ends of the plurality of horizontal slide bars 4 away from the transfer cart 1 are fixedly installed with mounting frames 5, and the bottoms of the plurality of mounting frames 5 are provided with the same pavement thickness measuring component;

[0039] The pavement thickness measurement component is used to measure the top thickness of the bridge concrete pavement, such as Figure 3 As shown, the pavement thickness measuring assembly includes a four-claw suspension frame 6 fixedly mounted on the bottom of a plurality of mounting frames 5, and the four bottom ends of the four-claw suspension frame 6 are fixedly mounted with an inclined bottoming support rod 7, and the bottom ends of the bottoming support rod 7 are each provided with a thickness distribution measuring unit for roughly measuring the thickness of the surrounding concrete pavement layer, as shown in FIG. Figure 4 As shown, a universal ball 8 is rotatably mounted at the top center of the four-claw suspension frame 6, an outer screw barrel 9 is fixedly mounted at the bottom of the universal ball 8, the top of the outer screw barrel 9 extends to the top of the universal ball 8, and a lifting motor 10 is fixedly mounted on the top of the universal ball 8, as shown in FIG. Figure 5As shown, the output shaft of the lifting motor 10 drives a flower-shaped rod 11, the bottom end of the flower-shaped rod 11 extends to the inside of the outer screw barrel 9, the inner screw tube 12 is screwed to the inside of the outer screw barrel 9, the flower-shaped rod 11 is slidably inserted into the inside of the inner screw tube 12, the bottom end of the inner screw tube 12 extends to the outside of the outer screw barrel 9 and is fixedly installed with a measuring tube 13. In this embodiment, the lifting motor 10 has a built-in pressure sensing system. When the measuring tube 13 contacts the bridge deck, the measuring tube 13 stops descending, and the pressure sensing system senses a sudden increase in pressure, controls the lifting motor 10 to lock immediately, and the measuring tube 13 The bottom side wall is provided with evenly distributed scale lines, and the measuring tube 13 is made of transparent material, and the bottom side wall of the measuring tube 13 is provided with a plurality of evenly distributed connecting grooves 1301; specifically, when the concrete pavement thickness detection device applied to bridge engineering is in use, after the concrete is paved, the construction personnel immediately push the transfer cart 1 carrying the pavement thickness measuring component to move to the vicinity of the point where the pavement thickness needs to be measured, and then push the horizontal slide bar 4 to make the multiple horizontal slide bars 4 slide along the support frame 3 and drive the pavement thickness measuring component to move to the top of the point, and then Then lower the self-locking telescopic rod 2, so that the pavement thickness measuring component starts to descend. By setting the pavement thickness measuring component, the self-locking telescopic rod 2 drives the four-claw suspension frame 6 to descend until the four bottoming support rods 7 are immersed in the pavement layer and contact the bridge deck, supporting the four-claw suspension frame 6 on the bridge deck, and then remotely control the lifting motor 10 to start. At this time, the lifting motor 10 and the outer screw barrel 9, measuring tube 13 and other components will remain vertical under the action of gravity and the rotation of the universal ball 8. The lifting motor 10 drives the inner screw tube 12 to rotate in the outer screw barrel 9 through the flower-shaped rod 11, thereby driving The measuring tube 13 descends until the bottom end of the measuring tube 13 touches the bridge deck, and the lifting motor 10 stops. At this time, the immersion depth of the measuring tube 13 can be observed according to the scale line at the bottom end of the measuring tube 13, thereby measuring the thickness of the pavement layer at the current point. At the same time, the concrete with fluid properties will flow into the interior of the measuring tube 13 through the connecting groove 1301 at the bottom end of the measuring tube 13, so that the concrete inside and outside the measuring tube 13 are flush, so that the construction personnel can observe the height of the concrete layer on both sides of the measuring tube 13 at the same time, and thus more intuitively and conveniently obtain the pavement thickness at the current point.

[0040] like Figure 3 As shown, the thickness distribution measuring unit includes a measuring carriage 14 fixedly sleeved on the bottom end of the bottoming support rod 7, as shown in FIG. Figure 6As shown, a plurality of friction-reducing balls 15 evenly distributed from top to bottom are rotatably mounted on both sides of the measuring slide 14, and a floating sleeve 16 is slidably sleeved on the friction-reducing balls 15. In this embodiment, the floating sleeve 16 does not contact the measuring slide 14, and the inner wall of the floating sleeve 16 only contacts the plurality of friction-reducing balls 15 on both sides of the measuring slide 14. A floating block 17 is fixedly mounted on the side wall of the floating sleeve 16. Specifically, by providing a thickness distribution measurement unit, when the pavement thickness measurement assembly descends and the thickness is measured for positioning, the four measuring slides 14 will be immersed in the concrete, and the floating sleeve 16 and the floating block 17 will float upward, causing the floating sleeve 16 to slide upward along the measuring slide 14 until it stabilizes and does not move. Therefore, the concrete thickness around the measuring point can be roughly calculated based on the position where the floating sleeve 16 and the floating block 17 stop on the measuring slide 14, thereby obtaining the distribution of the pavement thickness around the measuring point, reducing the number of measurements and making the thickness distribution of the pavement layer more intuitive.

[0041] like Figure 6 As shown, a first positioning electric push rod 18 perpendicular to the measuring slide 14 is fixedly installed on the side wall of the floating sleeve 16, and a positioning hole is opened on the side wall of the floating sleeve 16. A fastening block is fixedly installed on the telescopic end of the first positioning electric push rod 18, and the position of the fastening block corresponds to the position of the positioning hole; specifically, by arranging the first positioning electric push rod 18, when the floating sleeve 16 and the floating block 17 are stable and motionless, the first positioning electric push rod 18 on one side of the floating sleeve 16 starts to start, and the telescopic end of the first positioning electric push rod 18 drives the fastening block to pass through the positioning hole and press on one side of the measuring slide 14, thereby locking the floating sleeve 16 on the measuring slide 14. When the measurement is completed, the surveyor can retract the pavement thickness measuring assembly. At this time, each floating sleeve 16 still stays in the floating position, thereby showing the thickness of the pavement layer around the point, which is convenient for subsequent measurement work.

[0042] like Figure 4 As shown, a sunshade weight disk 19 is fixedly sleeved on the top end of the measuring tube 13; specifically, by setting the sunshade weight disk 19, the sunshade weight disk 19 is made of a material with a higher density. The sunshade weight disk 19 can be located at the bottom of the outer screw barrel 9 to act as a plumb line, so that the part from the lifting motor 10 to the bottom end of the measuring tube 13 remains vertical, and the measuring tube 13 will not be skewed due to contact with the pavement layer, affecting the measurement accuracy. At the same time, it can be located at the top end of the measuring tube 13 to prevent ambient light from directly hitting the measuring tube 13 and affecting the reading of point thickness data.

[0043] like Figure 7 As shown, a built-in electric push rod 20 is fixedly installed inside the top of the measuring tube 13, and the telescopic end of the built-in electric push rod 20 faces downward and is fixedly installed with a measuring push plate 21, as shown in FIG. Figure 8As shown, a pressure sensor 22 is fixedly installed inside the measuring push plate 21, an elastic member 23 is fixedly installed at the bottom of the pressure sensor 22, a touch plate 24 is fixedly installed at the bottom of the elastic member 23, and the touch plate 24 is slidably installed inside the measuring push plate 21; specifically, by setting the measuring push plate 21, after the measuring tube 13 contacts the bridge deck, the built-in electric push rod 20 can be controlled to drive the measuring push plate 21 to slide downward inside the measuring tube 13 until the touch plate 24 at the bottom of the measuring push plate 21 contacts the concrete inside the measuring tube 13, thereby giving pressure through the elastic member 23. The reaction pressure of the pressure sensor 22 causes the pressure sensor 22 to transmit a control signal, causing the telescopic end of the built-in electric push rod 20 to stop moving, thereby causing the touch plate 24 to stay near the surface of the pavement layer. After recovering the pavement layer thickness measurement component, the measurement personnel can cross-verify the stop position of the touch plate 24 with the thickness data obtained by previous observations to improve the accuracy of the data. At the same time, the built-in electric push rod 20 can drive the measuring push plate 21 to continue sliding, pushing out the remaining concrete inside the measuring tube 13, thereby facilitating the subsequent cleaning work of the pavement layer thickness measurement component.

[0044] like Figure 3 As shown, a plurality of vertically arranged placement racks 25 are fixedly installed on the top of the four-claw suspension rack 6, such as Figure 9 As shown, the top of the placement rack 25 is rotatably mounted with a positioning claw 26, and a cork tray 27 is placed between the multiple positioning claws 26. Figure 4 As shown, a second positioning electric push rod 28 is fixedly installed vertically on the top of the lifting motor 10, and a positioning pin 29 is fixedly installed on the telescopic end of the second positioning electric push rod 28. A plurality of balancing columns 30 are fixedly installed on the top of the lifting motor 10, and the plurality of balancing columns 30 surround the circumference of the second positioning electric push rod 28; specifically, by arranging a cork disk 27, after the measuring tube 13 contacts the bridge deck and positions itself, the second positioning electric push rod 28 on the top of the lifting motor 10 will drive the positioning pin 29 to move upward until it is inserted into the lower surface of the cork disk 27, and then the cork disk 27 fixes the pavement thickness measuring assembly from the upper end through the positioning pin 29 and the second positioning electric push rod 28. When the pavement thickness measuring assembly is recovered, the pavement thickness measuring assembly can also maintain the angle during measurement under the positioning action of the positioning pin 29 and the cork disk 27, so that the measurement personnel can combine the angle of the pavement thickness measuring assembly with the position of the thickness distribution measuring unit to reproduce the thickness distribution condition of the pavement during measurement.

[0045] like Figure 9As shown, the tops of the positioning claws 26 are each provided with fastening holes, and the insides of the fastening holes are each inserted with positioning cone head bolts 31; specifically, by providing the positioning cone head bolts 31, after multiple measurements, each positioning cone head bolt 31 can be screwed out from the upper surface and fastening holes of the cork disk 27, and each positioning claw 26 is rotated to remove the cork disk 27, and then the cork disk 27 is horizontally rotated, vertically flipped or directly replaced, and then the cork disk 27 is reinstalled and each positioning cone head bolt 31 is tightened to prevent the pinholes caused by the previous insertion of the positioning pins 29 from affecting the subsequent positioning accuracy.

[0046] like Figure 2 As shown, a pedal hole is provided on the top of the transfer cart 1, and a pedal board 32 is placed inside the pedal hole. Two vertically arranged return spring rods 33 are fixedly installed on the top of the transfer cart 1, and the telescopic ends of the two return spring rods 33 are fixedly connected to the two sides of the pedal board 32 respectively; specifically, by setting the pedal board 32, the combination of the transfer cart 1 and the self-locking telescopic rod 2 and the horizontal slide bar 4 can be used to conveniently move the pavement thickness measuring assembly, and the pavement thickness measuring assembly can be suspended above the point on one side of the pavement layer, thereby expanding the measurement range of the point, and during measurement, the staff can step on the pedal board 32 to make the lower surface of the pedal board 32 contact the road and other entities to position the transfer cart 1, so that the suspension of the pavement thickness measuring assembly is more stable.

[0047] In summary: Before measurement: After the concrete is paved, the construction workers immediately push the transfer cart 1 carrying the pavement thickness measuring component to the vicinity of the point where the pavement thickness needs to be measured. The worker steps on the pedal 32 to make the lower surface of the pedal 32 contact the road and other entities to position the transfer cart 1, and then push the horizontal slide bar 4 to make multiple horizontal slide bars 4 slide along the support frame 3 and drive the pavement thickness measuring component to move above the point, and then lower the self-locking telescopic rod 2 to make the pavement thickness measuring component start to descend, and the self-locking telescopic rod 2 drives the four-claw suspension frame 6 to descend until the four bottoming support rods 7 are immersed in the pavement layer and contact the bridge deck, supporting the four-claw suspension frame 6 on On the bridge deck, the remote-controlled lifting motor 10 is started. At this time, the lifting motor 10 and the outer screw barrel 9, the measuring tube 13 and other components will remain vertical under the action of gravity and the rotation of the universal ball 8. The lifting motor 10 drives the inner screw tube 12 to rotate in the outer screw barrel 9 through the flower-shaped rod 11, thereby driving the measuring tube 13 to descend until the bottom end of the measuring tube 13 contacts the bridge deck. The lifting motor 10 stops, and the second positioning electric push rod 28 on the top of the lifting motor 10 drives the positioning pin 29 to move upward until it is inserted into the lower surface of the cork disk 27, thereby fixing the pavement thickness measuring assembly from the upper end through the positioning pin 29 and the second positioning electric push rod 28;

[0048] During measurement: control the built-in electric push rod 20 to drive the measuring push plate 21 to slide downward inside the measuring tube 13 until the touch plate 24 at the bottom of the measuring push plate 21 contacts the concrete inside the measuring tube 13, thereby giving the pressure sensor 22 a reaction pressure through the elastic member 23, causing the pressure sensor 22 to transmit a control signal, causing the telescopic end of the built-in electric push rod 20 to stop moving, thereby causing the touch plate 24 to stay near the surface of the pavement layer. The staff observes the immersion depth of the measuring tube 13 according to the scale line at the bottom of the measuring tube 13, thereby measuring the thickness of the pavement layer at the current point. At the same time, the concrete with fluid properties will flow into the interior of the measuring tube 13 through the connecting groove 1301 at the bottom of the measuring tube 13, making the concrete inside and outside the measuring tube 13 flush, so that the construction workers can The operator can simultaneously observe the height of the concrete layer on both sides of the measuring tube 13. When the pavement thickness measuring assembly descends and measures the thickness of the positioning, the four measuring slides 14 will sink into the concrete, and the floating sleeve 16 and the floating block 17 will float upward, causing the floating sleeve 16 to slide upward along the measuring slide 14 until it stabilizes and stops. The first positioning electric push rod 18 on one side of the floating sleeve 16 starts to start, and the telescopic end of the first positioning electric push rod 18 drives the fastening block through the positioning hole and presses on one side of the measuring slide 14, thereby locking the floating sleeve 16 on the measuring slide 14. Therefore, the concrete thickness around the measuring point can be roughly calculated according to the position where the floating sleeve 16 and the floating block 17 stay on the measuring slide 14, thereby obtaining the distribution of the pavement thickness around the measuring point.

[0049] After measurement: After the pavement thickness measuring assembly is recovered, the pavement thickness measuring assembly can also maintain the angle during measurement under the positioning action of the positioning pin 29 and the cork disk 27, so that the measurement personnel can combine the angle of the pavement thickness measuring assembly with the position of the thickness distribution measuring unit to reproduce the thickness distribution of the pavement during measurement. The measurement personnel can cross-verify the thickness data obtained by the previous observation based on the stop position of the touch plate 24. At the same time, the built-in electric push rod 20 can drive the measuring push plate 21 to continue sliding, pushing out the concrete remaining in the measuring tube 13, and facilitating the subsequent cleaning of the pavement thickness measuring assembly. After multiple measurements, each positioning cone head bolt 31 can be unscrewed from the upper surface and fastening hole of the cork disk 27, and each positioning claw 26 can be rotated to remove the cork disk 27. The cork disk 27 can then be rotated horizontally, flipped vertically or directly replaced, and then the cork disk 27 can be reinstalled and each positioning cone head bolt 31 can be tightened to prevent the pinholes caused by the previous insertion of the positioning pin 29 from affecting the subsequent positioning accuracy.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the thickness of a concrete pavement layer used in bridge engineering, characterized in that: The invention comprises a transfer cart (1), wherein a plurality of vertically arranged self-locking telescopic rods (2) are fixedly mounted on the top of the transfer cart (1), a support frame (3) is fixedly mounted on the telescopic ends of the self-locking telescopic rods (2), a horizontal slide rod (4) is slidably mounted on the support frame (3), a plurality of the horizontal slide rods (4) are fixedly mounted on one end away from the transfer cart (1), and a same pavement layer thickness measuring component is arranged at the bottom of the plurality of the mounting frames (5); The pavement thickness measuring assembly is used to measure the top thickness of the bridge concrete pavement. The pavement thickness measuring assembly includes a four-claw suspension frame (6) fixedly mounted on the bottom of a plurality of the mounting frames (5). The four bottom ends of the four-claw suspension frame (6) are all fixedly mounted with tilted bottom support rods (7). The bottom ends of the bottom support rods (7) are all provided with thickness distribution measuring units for roughly measuring the thickness of the surrounding concrete pavement. A universal ball (8) is rotatably mounted at the top center of the four-claw suspension frame (6). An outer screw barrel (9) is fixedly mounted at the bottom of the universal ball (8). The top end of the outer screw barrel (9) extends The top of the universal ball (8) is fixedly mounted with a lifting motor (10), the output shaft of the lifting motor (10) drives the installation of a flower-shaped rod (11), the bottom end of the flower-shaped rod (11) extends to the interior of the outer screw barrel (9), the interior of the outer screw barrel (9) is screwed with an inner screw tube (12), the flower-shaped rod (11) is slidably inserted into the interior of the inner screw tube (12), the bottom end of the inner screw tube (12) extends to the outside of the outer screw barrel (9) and is fixedly mounted with a measuring tube (13), and a plurality of evenly distributed communicating grooves (1301) are provided on the side wall of the bottom end of the measuring tube (13); The thickness distribution measuring unit comprises a measuring slide (14) fixedly sleeved on the bottom end of the bottoming support rod (7), a plurality of anti-friction balls (15) uniformly distributed from top to bottom are rotatably mounted on both sides of the measuring slide (14), a floating sleeve (16) is slidably sleeved on the anti-friction balls (15), a floating block (17) is fixedly mounted on the side wall of the floating sleeve (16), a first positioning electric push rod (18) perpendicular to the measuring slide (14) is fixedly mounted on the side wall of the floating sleeve (16), a positioning hole is opened on the side wall of the floating sleeve (16), a fastening block is fixedly mounted on the telescopic end of the first positioning electric push rod (18), and the position of the fastening block corresponds to the position of the positioning hole; A plurality of vertically arranged placement racks (25) are fixedly installed on the top of the four-claw suspension rack (6), and a positioning claw (26) is rotatably installed on the top of each of the placement racks (25). A same cork tray (27) is placed between the plurality of positioning claws (26). A second vertically arranged positioning electric push rod (28) is fixedly installed on the top of the lifting motor (10), and a positioning pin (29) is fixedly installed on the telescopic end of the second positioning electric push rod (28). A plurality of balancing columns (30) are fixedly installed on the top of the lifting motor (10), and the plurality of balancing columns (30) surround the circumference of the second positioning electric push rod (28).

2. The device for detecting the thickness of concrete pavement applied to bridge engineering according to claim 1, characterized in that: A sunshade weight disk (19) is fixedly sleeved on the top end of the measuring tube (13).

3. The device for detecting the thickness of concrete pavement applied to bridge engineering according to claim 1, characterized in that: A built-in electric push rod (20) is fixedly installed inside the top end of the measuring tube (13), the telescopic end of the built-in electric push rod (20) faces downward and is fixedly installed with a measuring push plate (21), a pressure sensor (22) is fixedly installed inside the measuring push plate (21), an elastic member (23) is fixedly installed at the bottom of the pressure sensor (22), a touch plate (24) is fixedly installed at the bottom of the elastic member (23), and the touch plate (24) is slidably installed inside the measuring push plate (21).

4. The device for detecting the thickness of concrete pavement applied to bridge engineering according to claim 1, characterized in that: The tops of the positioning claws (26) are each provided with a fastening hole, and the interiors of the fastening holes are each inserted with a positioning cone head bolt (31).

5. The device for detecting the thickness of concrete pavement applied to bridge engineering according to claim 1, characterized in that: A pedal hole is provided on the top of the transfer cart (1), a pedal board (32) is placed inside the pedal hole, and two vertically arranged return spring rods (33) are fixedly installed on the top of the transfer cart (1), and the telescopic ends of the two return spring rods (33) are fixedly connected to the two sides of the pedal board (32) respectively.

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