Pavement thickness detection equipment convenient to calibrate

Abstract

The utility model relates to the technical field of road detection equipment, and discloses pavement thickness detection equipment convenient to calibrate, which comprises a frame body, a vertical rod is fixedly connected to the top end face of the frame body, an installation flat plate is fixedly connected to the top end face of the vertical rod, and a detection device is arranged on the top end face of the installation flat plate. According to the pavement thickness detection equipment convenient to calibrate, the insertion needle is in contact with the pavement, the scale marks of the scale cylinder are aligned with the clamping hand, the movable rod is pushed to be in contact with the ground, then the bolt is tightened, the bolt abuts against the movable rod, and the movable rod and the scale cylinder are fixed together, so that quick zero-returning calibration of the scale cylinder is realized; an operator can more quickly prepare the device and carry out measurement work, so that the working efficiency is improved, the insertion depth can be intuitively read by clamping a finger to the height scale on the scale cylinder and the pointed scale, namely the insertion depth, and the consistency and comparability of measurement results are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway detection equipment, in particular to a road surface thickness detection device which is convenient for calibration. Background Art

[0002] In asphalt pavement construction, when the asphalt mixture has not yet cooled, measuring points can be randomly selected for thickness measurement as needed. This measurement method involves using a large screwdriver to insert into the bottom of the asphalt layer, and then using a ruler to measure the thickness of the asphalt layer. However, in actual operation, due to human operation, when holding the large screwdriver and inserting it into the bottom of the asphalt layer, it is impossible to ensure that the large screwdriver remains vertical to the asphalt pavement layer, which may lead to inaccurate measurement results.

[0003] According to a disclosed asphalt pavement thickness detection device (Announcement No.: CN213208843U), the above application includes a base, an adjustment platform and a column, the adjustment platform is fixed to the base through a balance adjustment rod, a fixed seat is fixed at the middle of the upper surface of the adjustment platform, a screw is spirally installed on the fixed seat, a hand wheel is installed on the top of the screw, the upper surface of the screw has no threads, a ring is sleeved on the non-threaded part of the screw, and the ring is fixed by a limit block.

[0004] However, when detecting the thickness of the asphalt pavement, the above-mentioned detection device needs to record the height at which the insertion needle touches the pavement and the height after being inserted into the pavement, and obtain the data of the asphalt pavement thickness by subtracting the two data. This requires multiple operations and records, which increases the complexity of the operation. In view of this, we propose a pavement thickness detection device that is easy to calibrate. Utility Model Content

[0005] The purpose of the utility model is to provide a road thickness detection device which is convenient for calibration, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a road thickness detection device that is convenient for calibration, comprising a frame, the top end surface of the frame is fixedly connected to a vertical pole, the top end surface of the vertical pole is fixedly connected to a mounting plate, the top end surface of the mounting plate is provided with a detection device, and the detection device includes:

[0007] A hydraulic cylinder, the hydraulic cylinder is fixedly connected to the top end surface of the mounting plate, the output end of the mounting plate is fixedly connected to a connecting rod, the connecting rod is away from the top end surface of the mounting plate, and the connecting rod is sleeved with an insertion needle, the side wall of the insertion needle is fixedly connected to a connecting frame, and the end of the connecting frame away from the insertion needle is fixedly connected to a clamping hand;

[0008] A ruler tube, the ruler tube is sleeved with the clamping hand, the ruler tube is sleeved with a movable rod, and the outer wall of the ruler tube is threadedly connected with a bolt;

[0009] A limiting ring is arranged on the outer wall of the connecting rod, and a spring is sleeved on the outer wall of the connecting rod.

[0010] Preferably, a scraper is fixedly connected to the inner top surface of the frame, a vertical tube is fixedly connected to the inner top surface of the frame, and a heater is fixedly connected to the inner wall of the vertical tube.

[0011] Preferably, a height scale is engraved on the side wall of the ruler tube, a limiting sleeve is fixedly connected to the outer wall of the ruler tube, the bottom end surface of the limiting sleeve is movably connected to the clamping hand, the clamping hand moves upward and abuts against the limiting sleeve, thereby driving the ruler tube and the movable rod to move upward.

[0012] Preferably, a thread groove is formed on the outer wall of the connecting rod, and the limiting ring is threadably connected to the thread groove. The limiting ring is rotated to make the limiting ring move longitudinally, thereby changing the preload of the spring.

[0013] Preferably, the bottom end surface of the spring abuts against the top end surface of the insertion needle, and the end of the spring away from the insertion needle abuts against the limiting sleeve.

[0014] Preferably, the scraper is movably connected to the outer wall of the insertion needle, and the scraper scrapes off the asphalt stuck to the outer wall of the insertion needle, and the axis of the vertical cylinder coincides with the axis of the insertion needle.

[0015] Compared with the prior art, the utility model provides a road thickness detection device that is easy to calibrate and has the following beneficial effects:

[0016] 1. The pavement thickness detection device which is convenient for calibration, through the provided clamping hand, scale barrel, limit sleeve and spring, the insertion needle contacts with the pavement, at which time the scale line of the scale barrel is aligned with the clamping hand, if the movable rod is not on the ground, the movable rod is pushed to contact with the ground, and then the bolt is tightened, the bolt is pressed against the movable rod, the movable rod and the scale barrel are fixed together, and the scale barrel is quickly zeroed and calibrated, so that the operator can prepare the device more quickly and perform the measurement work, thereby improving the work efficiency, and the clamping hand points to the height scale on the scale barrel, the scale pointed to is the insertion depth, the insertion depth can be read intuitively, and the consistency and comparability of the measurement results are improved, when the insertion needle contacts the hard roadbed, the insertion needle shrinks in the direction of the connecting rod, the spring is deformed, and the insertion needle is prevented from being inserted into the roadbed and thus affecting the detection data of the asphalt thickness, thereby improving the accuracy of the detection data, and the adjustable spring preload enables the detection device to adapt to asphalt pavements under different temperature conditions, and also enables the detection device to be applicable to pavements with different soft and hard roadbeds.

[0017] 2. The road thickness detection equipment which is easy to calibrate uses a scraper and a heater. The heater heats the scraper and asphalt to soften the asphalt, making it easier for the asphalt to be scraped off by the scraper or drip along the insertion needle. The scraper scrapes off a layer of asphalt covering the surface of the insertion needle, thereby ensuring the normal subsequent detection of the insertion needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the structure of the middle A area;

[0021] Figure 4 This is a schematic diagram of the insertion needle structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the ruler tube of the utility model.

[0023] In the figure: 1. frame; 2. vertical pole; 3. mounting plate; 4. hydraulic cylinder; 5. connecting rod; 6. insertion needle; 7. connecting frame; 8. clamping hand; 9. scale tube; 10. limiting sleeve; 11. movable rod; 12. bolt; 13. spring; 14. limiting ring; 15. scraper; 16. vertical tube; 17. heater. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a road thickness detection device that is easy to calibrate, including a frame 1, the top end face of the frame 1 is fixedly connected with a vertical pole 2, the top end face of the vertical pole 2 is fixedly connected with a mounting plate 3, the top end face of the mounting plate 3 is provided with a detection device, the detection device includes a hydraulic cylinder 4, a connecting rod 5, an insertion needle 6, a connecting frame 7, a clamping hand 8, a scale tube 9, a limit sleeve 10, a movable rod 11, a bolt 12, a spring 13, a limit ring 14, a scraper 15, a vertical tube 16, and a heater 17.

[0025] In one embodiment of the utility model, the hydraulic cylinder 4 is fixedly connected to the top end surface of the mounting plate 3, and the output end of the mounting plate 3 is fixedly connected to a connecting rod 5, the connecting rod 5 is away from the top end surface of the mounting plate 3, and the connecting rod 5 is sleeved with an insertion needle 6, and the side wall of the insertion needle 6 is fixedly connected with a connecting frame 7, and the end of the connecting frame 7 away from the insertion needle 6 is fixedly connected with a clamping hand 8, a scale tube 9 is sleeved with the clamping hand 8, and the scale tube 9 is sleeved with a movable rod 11, and the outer wall of the scale tube 9 is threaded with a bolt 12, and the side wall of the scale tube 9 is engraved with a height scale, and the outer wall of the scale tube 9 is fixedly connected with a limiting sleeve 10, and the bottom end surface of the limiting sleeve 10 is movably connected to the clamping hand 8, and the clamping hand 8 moves upward and abuts against the limiting sleeve 10, thereby driving the scale tube 9 and the movable rod 11 to move upward.

[0026] A limiting ring 14 is arranged on the outer wall of the connecting rod 5, and a spring 13 is sleeved on the outer wall of the connecting rod 5. The bottom end face of the spring 13 abuts against the top end face of the insertion needle 6, and the end of the spring 13 away from the insertion needle 6 abuts against the limiting sleeve 10. A threaded groove is provided on the outer wall of the connecting rod 5, and the limiting ring 14 is threadedly connected to the threaded groove. The limiting ring 14 is rotated to make the limiting ring 14 move longitudinally, thereby changing the preload of the spring 13.

[0027] A scraper 15 is fixedly connected to the inner top surface of the frame 1, and the scraper 15 is movably connected to the outer wall of the insertion needle 6. The scraper 15 scrapes off the asphalt stuck to the outer wall of the insertion needle 6. A vertical cylinder 16 is fixedly connected to the inner top surface of the frame 1, and a heater 17 is fixedly connected to the inner wall of the vertical cylinder 16. The axis of the vertical cylinder 16 coincides with the axis of the insertion needle 6.

[0028] The hydraulic cylinder 4 pushes the connecting rod 5 and the insertion needle 6 to move downward, so that the insertion needle 6 contacts the road surface. At this time, the 0 scale line of the scale tube 9 is aligned with the clamping hand 8. If the movable rod 11 has not fallen to the ground, the movable rod 11 is pushed to make the movable rod 11 contact the ground, and then the bolt 12 is tightened. The bolt 12 presses against the movable rod 11 to fix the movable rod 11 and the scale tube 9 together, so as to realize the rapid zeroing calibration of the scale tube 9, so that the operator can prepare the device more quickly and perform the measurement work, thereby improving the work efficiency, and continue to start the hydraulic cylinder 4 to insert the insertion needle 6 into the asphalt road surface. The descent of the insertion needle 6 drives the clamping hand 8 to descend synchronously, so that the clamping hand 8 points to the height scale on the scale tube 9. The scale pointed to is the insertion depth. The insertion depth can be read intuitively, thereby improving the consistency and comparability of the measurement results.

[0029] When the detection is completed, the insertion needle 6 is lifted upward, and the clamping hand 8 also moves upward, thereby lifting the scale tube 9 through the limiting sleeve 10.

[0030] Asphalt and road surfaces at different temperatures require different insertion forces. When the asphalt temperature is low, the limit ring 14 is rotated to give the spring 13 a greater pre-pressure. At this time, the insertion needle 6 is less likely to shrink toward the connecting rod 5, so that the insertion needle 6 is inserted into the asphalt road surface. When the insertion needle 6 contacts the hard roadbed, the pressure applied by the hydraulic cylinder 4 is greater than the resistance of the insertion needle 6 to continue to insert downward. The insertion needle 6 shrinks toward the connecting rod 5, and the spring 13 is deformed, preventing the insertion needle 6 from being inserted into the roadbed and affecting the detection data of the asphalt thickness, thereby improving the accuracy of the detection data. At the same time, through the adjustable pre-pressure of the spring 13, the detection device can adapt to asphalt road surfaces under different temperature conditions, and can also make the detection device suitable for road surfaces with different soft and hard roadbeds.

[0031] In addition, a scraper 15 is fixedly connected to the inner top surface of the frame 1, a vertical cylinder 16 is fixedly connected to the inner top surface of the frame 1, and a heater 17 is fixedly connected to the inner wall of the vertical cylinder 16. When the insertion needle 6 is pulled out of the asphalt, the surface of the insertion needle 6 will be covered with a layer of asphalt. This layer of asphalt provides greater resistance to the subsequent insertion of the insertion needle 6. This layer of asphalt is scraped off by the scraper 15 to ensure that the subsequent detection work of the insertion needle 6 is carried out normally. At the same time, the scraper 15 and the asphalt are heated by the heater 17 to soften the asphalt, making it easier for the asphalt to be scraped off by the scraper 15 or drip along the insertion needle 6.

[0032] The 0 scale line of the scale tube 9 is aligned with the clamping hand 8, and the movable rod 11 is pushed to make the movable rod 11 contact with the ground, and the bolt 12 is tightened. The bolt 12 presses against the movable rod 11, and the hydraulic cylinder 4 is started again to insert the insertion needle 6 into the asphalt pavement. The descent of the insertion needle 6 drives the clamping hand 8 to descend synchronously, so that the clamping hand 8 points to the height scale on the scale tube 9, and the insertion needle 6 is lifted upward. The clamping hand 8 also moves upward, and then the scale tube 9 is lifted through the limit sleeve 10, and the limit ring 14 is rotated to make the spring 13 have a larger pre-pressure, so that the insertion needle 6 is inserted into the asphalt pavement with a lowered temperature. When the insertion needle 6 contacts the hard roadbed, the insertion needle 6 contracts toward the connecting rod 5, and the spring 13 is deformed. Further, the heater 17 heats the scraper 15 and the asphalt to soften the asphalt, and the scraper 15 scrapes off a layer of asphalt covering the surface of the insertion needle 6.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A road thickness detection device that is easy to calibrate, comprising a frame (1), the top end surface of the frame (1) is fixedly connected to a vertical pole (2), the top end surface of the vertical pole (2) is fixedly connected to a mounting plate (3), characterized in that: The top end surface of the mounting plate (3) is provided with a detection device, and the detection device comprises: A hydraulic cylinder (4), the hydraulic cylinder (4) is fixedly connected to the top end surface of the mounting plate (3), the output end of the mounting plate (3) is fixedly connected to a connecting rod (5), the connecting rod (5) is away from the top end surface of the mounting plate (3), and the connecting rod (5) is sleeved with an insertion needle (6), the side wall of the insertion needle (6) is fixedly connected to a connecting frame (7), and the end of the connecting frame (7) away from the insertion needle (6) is fixedly connected to a clamping hand (8); A ruler tube (9), the ruler tube (9) is sleeved with the clamping hand (8), the ruler tube (9) is sleeved with a movable rod (11), and the outer wall of the ruler tube (9) is threadedly connected with a bolt (12); A limiting ring (14) is arranged on the outer wall of the connecting rod (5), and a spring (13) is sleeved on the outer wall of the connecting rod (5).

2. A road thickness detection device that is easy to calibrate according to claim 1, characterized in that: The internal top surface of the frame (1) is fixedly connected with a scraper (15), the internal top surface of the frame (1) is fixedly connected with a vertical tube (16), and the inner wall of the vertical tube (16) is fixedly connected with a heater (17).

3. The road thickness detection device that is easy to calibrate according to claim 1 is characterized in that: The side wall of the ruler tube (9) is engraved with a height scale, the outer wall of the ruler tube (9) is fixedly connected to a limiting sleeve (10), and the bottom end surface of the limiting sleeve (10) is movably connected to the clamping hand (8).

4. The road thickness detection device that is easy to calibrate according to claim 1 is characterized in that: The outer wall of the connecting rod (5) is provided with a thread groove, and the limiting ring (14) is threadably connected to the thread groove.

5. The road thickness detection device that is easy to calibrate according to claim 1 is characterized in that: The bottom end surface of the spring (13) abuts against the top end surface of the insertion needle (6), and the end of the spring (13) away from the insertion needle (6) abuts against the limiting sleeve (10).

6. The road thickness detection device that is easy to calibrate according to claim 2 is characterized in that: The scraper (15) is movably connected to the outer wall of the insertion needle (6), and the axis of the vertical tube (16) coincides with the axis of the insertion needle (6).

Images