Asphalt loose paving thickness and paving temperature detector

By designing the asphalt pine paving thickness and paving temperature detector for thermometers, temperature probes and oiled components, the problems of low detection efficiency and workers' scalding are solved, and safe and efficient asphalt thickness and temperature measurement are achieved.

CN223077589UActive Publication Date: 2025-07-08CCCC FOURTH HIGHWAY ENG CO LTD +1
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Patent Information

Application Number
CN202421853704.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-02
Publication Date
2025-07-08
Estimated Expiration
2034-08-02

AI Technical Summary

Technical Problem

In the prior art, the asphalt pine paving thickness detection has the problem of low efficiency and easy to cause burns to workers.

Method used

A asphalt pine paving thickness and paving temperature detector including a thermometer, a temperature probe, a detection ruler and an oiled assembly was designed to read the temperature through the thermometer and a temperature probe, the detection ruler inserted into the asphalt pavement to measure the thickness, and reduce asphalt adhesion through the oiled assembly.

Benefits of technology

It improves detection efficiency, ensures worker safety, ensures measurement accuracy and practical performance of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of asphalt pavement detection, in particular to an asphalt loose paving thickness and paving temperature detector. Comprising a base, an outer sleeve and a detection ruler, one side of the top end of the outer sleeve is fixedly connected with a thermodetector, the bottom of the detection ruler is fixedly connected with a temperature probe matched with the thermodetector, and the outer sleeve and the detection ruler are provided with a measuring assembly facilitating an operator to measure the asphalt loose laying thickness. According to the asphalt loose paving thickness and paving temperature detector provided by the utility model, through the design of the thermodetector, the temperature probe and the measuring assembly, a worker only needs to place the base at the bottom end of the outer sleeve on an asphalt pavement, insert the detection ruler into the outer sleeve and insert a USB line on the temperature probe into a USB interface of the thermodetector, and then the asphalt loose paving thickness and paving temperature can be measured. A worker can read the loose paving thickness and the paving temperature of the asphalt pavement through the observation hole and the thermodetector after the grip is held to press the detection ruler downwards and the temperature probe at the bottom end of the detection ruler is inserted into the bottom end of the asphalt pavement.
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Description

Technical Field

[0001] The utility model relates to the technical field of asphalt pavement detection, in particular to a detector for asphalt loose paving thickness and paving temperature. Background Technique

[0002] The asphalt loose paving thickness refers to the thickness of the uncompacted material layer. During the paving process of the road asphalt surface layer, the asphalt mixture loose paving thickness is related to the thickness of the asphalt surface layer after compaction and is closely related to the overall quality of the road paving. Therefore, in order to ensure the construction quality of the asphalt pavement, the detection of the asphalt loose paving thickness is of great significance.

[0003] Regarding the detection of the asphalt loose paving thickness, most of the current detection methods are to insert a steel bar or a screwdriver into the uncooled asphalt pavement and then pull it out, and then use a ruler to measure the height from the tip of the steel bar or the screwdriver to the depth it sinks into the asphalt pavement to measure the thickness of the asphalt pavement. However, in the actual measurement process, since the temperature of the asphalt is relatively high when it is not cooled, it is very easy to contact the asphalt pavement when positioning manually by hand, causing burns to the hands of the measurement personnel. Moreover, the accuracy of this measurement method is poor, and it often requires multiple measurements and taking the average value as the reference standard, resulting in low efficiency of the asphalt loose paving thickness detection.

[0004] Therefore, we designed a detector for asphalt loose paving thickness and paving temperature to provide another technical solution for the above technical problems. Content of the Utility Model

[0005] Based on this, it is necessary to provide a detector for asphalt loose paving thickness and paving temperature that can avoid burns to workers, is easy to operate, and has high detection efficiency for the above technical problems.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A detector for asphalt loose paving thickness and paving temperature, comprising a base, an outer sleeve and a detection ruler. The outer sleeve is fixedly arranged at the top of the base. One side of the top of the outer sleeve is fixedly connected with a temperature measuring instrument. The bottom of the detection ruler is fixedly connected with a temperature probe that cooperates with the temperature measuring instrument. The top of the temperature probe is fixedly connected with a USB wire. The temperature measuring instrument is provided with a socket that matches the USB wire. The top of the detection ruler is fixedly provided with a handle that is convenient for the operator to press. Slots that match the detection ruler are opened inside the outer sleeve and the base. A measuring component that is convenient for the operator to measure the asphalt loose paving thickness is provided on the outer sleeve and the detection ruler.

[0008] Preferably, the measuring assembly includes a scale mark fixed on one side of the inspection ruler. An observation hole for the operator to observe is provided on the side of the outer sleeve opposite to the scale mark. A scale pointer matching the scale mark is fixedly arranged in the middle of the observation hole.

[0009] Preferably, a guiding block for restricting the insertion direction of the inspection ruler is fixedly arranged on one side of the inspection ruler. A guiding groove matching the guiding block is arranged inside the outer sleeve.

[0010] Preferably, a plurality of fixed wire clips for restricting the position of the USB wire are fixedly connected inside the inspection ruler.

[0011] Preferably, an oiling assembly for oiling the surface of the inspection ruler is arranged inside the base. The oiling assembly includes an oil storage ring fixed inside the slot. An oil injection hole is opened at the bottom of the oil storage ring, and a rubber plug is blocked on the oil injection hole. An annular airbag is fixedly connected to the inner ring of the oil storage ring. An oil absorption felt for oiling the surface of the inspection ruler is fixedly arranged at the bottom of the annular airbag. A plurality of oil delivery holes I communicating with the oil absorption felt are arranged on the annular airbag. The outer surface of the oil absorption felt is flush with the outer surface of the annular airbag. A plurality of mutually communicating oil delivery holes II are arranged between the annular airbag and the oil storage ring. A plurality of air inlet holes for air intake are opened at the top end of the oil storage ring.

[0012] Preferably, dust-proof nets for dust prevention are covered outside a plurality of the air inlet holes.

[0013] It can be undoubtedly seen that through the above technical solutions of the present application, the technical problems to be solved by the present application can surely be solved.

[0014] Meanwhile, through the above technical solutions, the utility model at least has the following beneficial effects:

[0015] 1. A detector for asphalt loose paving thickness and paving temperature provided by the utility model, through the design of the thermometer, temperature probe and measuring assembly, enables workers to only place the base at the bottom end of the outer sleeve on the asphalt pavement to be detected, insert the inspection ruler into the outer sleeve, insert the USB wire on the temperature probe into the USB interface of the thermometer, and then hold the handle at the top end of the inspection ruler and press the inspection ruler downward. After the temperature probe at the bottom end of the inspection ruler is inserted into the bottom end of the asphalt pavement, the workers can read the loose paving thickness and paving temperature of the asphalt pavement through the observation hole on the outer sleeve and the thermometer, thus solving the problem that it is easy to cause hand burns when workers insert a steel bar or a screwdriver into the asphalt pavement, effectively ensuring the safety of workers during the detection of asphalt thickness, and improving the practical performance of the device.

[0016] 2. The asphalt loose paving thickness and paving temperature detector provided by the present utility model restricts the position of the detection ruler when it is inserted into the outer sleeve through the design of the guiding block and the guiding groove. After the detection ruler is inserted into the outer sleeve, the side with the scale mark faces the observation hole, so that the worker can read the height of the temperature probe inserted into the asphalt pavement, ensuring the normal use of the device.

[0017] 3. The asphalt loose paving thickness and paving temperature detector provided by the present utility model performs an oiling treatment on the surface of the detection ruler to be inserted into the asphalt through the design of the oiling component, thereby avoiding the phenomenon that the uncooled asphalt is easily adhered to the surface of the detection ruler during the detection of the asphalt loose paving thickness and paving temperature, effectively improving the actual use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is the axonometric structure schematic diagram of the present utility model;

[0020] Figure 2 is the half-sectional structure schematic diagram of the present utility model;

[0021] Figure 3 is the axonometric structure schematic diagram of the outer sleeve and the detection ruler of the present utility model;

[0022] Figure 4 is for the present utility model Figure 1 is the schematic diagram of the structure at position A;

[0023] Figure 5 is for the present utility model Figure 2 is the schematic diagram of the structure at position B;

[0024] Figure 6 is the installation structure schematic diagram of the fixed wire clamp and the USB wire of the present utility model;

[0025] Figure 7 is the structure schematic diagram of the oiling component of the present utility model.

[0026] In the figure: 1, base; 2, outer sleeve; 3, inspection ruler; 4, thermometer; 5, temperature probe; 6, USB wire; 7, socket; 8, grip; 9, slot; 10, scale mark; 11, observation hole; 12, scale pointer; 13, guide block; 14, guide groove; 15, fixed wire clamp; 16, oil storage ring; 17, oil injection hole; 18, rubber plug; 19, annular airbag; 20, oil absorption felt; 21, oil delivery hole 1; 22, oil delivery hole 2; 23, air inlet hole; 24, dustproof net. Specific implementation manner

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] Embodiment 1

[0029] Refer to Figures 1-7 , an asphalt loose paving thickness and paving temperature detector, comprising a base 1, an outer sleeve 2 and an inspection ruler 3. The outer sleeve 2 is fixedly arranged at the top end of the base 1. One side of the top end of the outer sleeve 2 is fixedly connected with a thermometer 4. The bottom of the inspection ruler 3 is fixedly connected with a temperature probe 5 that cooperates with the thermometer 4. The top end of the temperature probe 5 is fixedly connected with a USB wire 6. The thermometer 4 is provided with a socket 7 that matches the USB wire 6. The top end of the inspection ruler 3 is fixedly provided with a grip 8 that is convenient for the operator to press. The inner parts of the outer sleeve 2 and the base 1 are provided with slots 9 that match the inspection ruler 3. The outer sleeve 2 and the inspection ruler 3 are provided with a measuring assembly that is convenient for the operator to measure the asphalt loose paving thickness. Specifically, in the present utility model, through the design of the thermometer 4, the temperature probe 5, the USB wire 6 and the socket 7, the operator only needs to place the base 1 at the bottom end of the outer sleeve 2 on the asphalt pavement to be detected, insert the inspection ruler 3 into the outer sleeve 2, insert the USB wire on the temperature probe 5 into the USB interface of the thermometer 4, and then hold the grip 8 at the top end of the inspection ruler 3 and press the inspection ruler 3 downward to insert it into the asphalt pavement. Then, the thermometer 4 will display the asphalt temperature measured by the temperature probe 5. The operator only needs to record the asphalt temperature displayed on the thermometer 4 to complete the measurement of the asphalt pavement paving temperature.

[0030] Referring to FIGS. 2-4, the measuring assembly includes a scale mark 10 fixedly arranged on one side of the inspection ruler 3. An observation hole 11 for the operator to observe is formed on the side of the outer sleeve 2 opposite to the scale mark 10. A scale pointer 12 matching the scale mark 10 is fixedly arranged in the middle of the observation hole 11. Specifically, in the present utility model, through the design of the scale mark 10, the observation hole 11 and the scale pointer 12, the operator only needs to place the base 1 at the bottom end of the outer sleeve 2 on the asphalt pavement to be detected, insert the inspection ruler 3 into the outer sleeve 2, and then hold the handle 8 at the top end of the inspection ruler 3 and press the inspection ruler 3 downward. When the temperature probe 5 at the bottom end of the inspection ruler 3 is inserted into the bottom end of the asphalt pavement, the operator can read the scale mark 10 pointed by the scale pointer 12 through the observation hole 11 arranged on the outer sleeve 2 to obtain the loose paving thickness of the asphalt pavement, thereby solving the problem that the operator is prone to hand burns when inserting a steel bar or a screwdriver into the asphalt pavement, effectively ensuring the safety of the operator during the detection of the asphalt thickness, and improving the practical performance of the device;

[0031] It should be noted that in this embodiment, during the process of inserting the inspection ruler 3 into the outer sleeve 2, when the tip of the temperature probe 5 at the bottom end of the inspection ruler 3 is flush with the bottom surface of the base 1, the 0 scale line of the scale mark 10 is flush with the scale pointer 12 on the outer sleeve 2. Through this design, the accuracy of the measurement of the asphalt pavement thickness by the measuring assembly is effectively ensured.

[0032] Referring to Figure 3 And Figure 5 , a guide block 13 for restricting the insertion direction of the inspection ruler 3 is fixedly arranged on one side of the inspection ruler 3. A guide groove 14 matching the guide block 13 is arranged inside the outer sleeve 2. Specifically, in the present utility model, through the design of the guide block 13 and the guide groove 14, the insertion direction of the inspection ruler 3 into the outer sleeve 2 is restricted, so that it can only be inserted into the outer sleeve 2 when the scale mark 10 is opposite to the observation hole 11, thereby avoiding the installation error caused by the operator inserting the inspection ruler 3 into the outer sleeve 2 when the scale mark 10 on the inspection ruler 3 does not correspond to the observation hole 11 on the outer sleeve 2, and effectively improving the actual use effect of the device.

[0033] Referring to Figure 6 , a plurality of fixing wire clips 15 for restricting the position of the USB wire 6 are fixedly connected inside the inspection ruler 3. Specifically, in the present utility model, through the design of the fixing wire clips 15, the position of the USB wire 6 inside the inspection ruler 3 is restricted, avoiding the inconvenience caused by the USB wire 6 shrinking into the inspection ruler 3 completely under the action of its own gravity when not in use, and further improving the actual use effect of the device.

[0034] When detecting the loose paving thickness and paving temperature of the asphalt:

[0035] The operator only needs to place the base 1 at the bottom end of the outer sleeve 2 on the asphalt pavement to be detected, insert the detection ruler 3 into the outer sleeve 2, insert the USB cable on the temperature probe 5 into the USB interface of the thermometer 4, and then hold the grip 8 at the top end of the detection ruler 3 and press the detection ruler 3 downward so that the temperature probe 5 at the bottom end of the detection ruler 3 is inserted into the bottom end of the asphalt pavement. Then, the operator can read the loose paving thickness and paving temperature of the asphalt pavement through the observation hole 11 provided on the outer sleeve 2 and the thermometer 4.

[0036] Embodiment 2

[0037] On the basis of Embodiment 1, this embodiment is further optimized. During the process of detecting the loose paving thickness and paving temperature of asphalt by the detection ruler 3, we found that the uncooled asphalt is extremely easy to adhere to the surface of the detection ruler 3 and is brought into the outer sleeve 2 as the detection ruler 3 moves upward. If the staff cannot clean the asphalt adhering to the detection ruler 3 and the inner part of the outer sleeve 2 in time, the asphalt solidified on the surface of the detection ruler 3 and the inner part of the outer sleeve 2 will affect the secondary use of the measuring component, and the actual use effect of the device is not good.

[0038] Referring to Figure 7 , an oiling component for oiling the surface of the detection ruler 3 is provided inside the base 1. The oiling component includes an oil storage ring 16 fixed inside the slot 9. An oil injection hole 17 is opened at the bottom of the oil storage ring 16, and a rubber plug 18 is plugged on the oil injection hole 17. An annular airbag 19 is fixedly connected to the inner ring of the oil storage ring 16. An oil absorption felt 20 for oiling the surface of the detection ruler 3 is fixedly provided at the bottom of the annular airbag 19. A plurality of oil delivery holes 21 communicating with the oil absorption felt 20 are provided on the annular airbag 19. The outer surface of the oil absorption felt 20 is flush with the outer surface of the annular airbag 19. A plurality of mutually communicating oil delivery holes 22 are provided between the annular airbag 19 and the oil storage ring 16. A plurality of air inlet holes 23 for air intake are opened at the top end of the oil storage ring 16. Specifically, in the present invention, through the design of the oiling component, the surface of the detection ruler 3 to be inserted into the asphalt is oiled, so as to avoid the phenomenon that the uncooled asphalt is easy to adhere to the surface of the detection ruler 3 during the process of detecting the loose paving thickness and paving temperature of the asphalt, effectively improving the actual use effect of the device. Through the design of the oil injection hole 17 and the rubber plug 18, when the operator finds that the amount of oil adsorbed on the oil absorption felt 20 is insufficient, the lubricating oil to be injected can be sucked by a syringe, and the needle of the syringe is inserted into the rubber plug 18, and then the push rod of the syringe is pushed to supplement the lubricating oil inside the oil storage ring 16. Through the design of the oil absorption felt 20, while ensuring the normal oiling of the surface of the detection ruler 3, the lubricating oil in the annular airbag 19 is blocked to a certain extent, avoiding the direct outflow of the lubricating oil from the annular airbag 19 through the oil delivery holes 21, effectively ensuring the normal operation of the oiling component;

[0039] It should be noted that in the present utility model, the detection ruler 3 is designed in a columnar shape. Through this design, the oil-absorbing felt 20 can be completely wrapped on the surface of the detection ruler 3 during the downward movement of the detection ruler 3 for oiling treatment, thereby effectively improving the overall quality of oiling the detection ruler 3, reducing the adhesion of asphalt on the surface of the detection ruler 3, and improving the practical performance of the device; on the other hand, the amount of lubricating oil that the injection syringe can suck is only two-thirds of the actual capacity of the oil storage ring 16. Through this design, when supplying oil through the injection syringe, too much oil will not flow out of the oil storage ring 16 through the air inlet hole 23, further improving the practical performance of the device; on the other hand, the inner diameters of the annular airbag 19 and the oil-absorbing felt 20 are slightly smaller than the outer diameter of the detection ruler 3. Through this design, the detection ruler 3 squeezes the annular airbag 19 and the oil-absorbing felt 20 during the downward movement, effectively ensuring the normal operation of the oiling assembly.

[0040] Refer to Figure 7 , dust-proof nets 24 for dust-proofing are provided outside each of the plurality of air inlet holes 23. Specifically, in the present utility model, through the design of the dust-proof net 24, the air outlet holes at the top of the oil storage ring 16 are blocked, preventing external dust and impurities from entering the oil storage ring 16 and the annular airbag 19 to block the second oil delivery hole 22 and the first oil delivery hole 21, effectively ensuring the normal operation of the oiling assembly;

[0041] When measuring the loose paving thickness and paving temperature of asphalt, the detection ruler 3 pressed and moved downward by the operator gradually contacts the annular airbag 19 and squeezes the annular airbag 19. At this time, the lubricating oil in the annular airbag 19 is gradually squeezed into the oil-absorbing felt 20 and the oil storage ring 16, and part of the air in the oil storage ring 16 is discharged. When the detection ruler 3 continues to move downward to squeeze the oil-absorbing felt 20, the lubricating oil adsorbed on the oil-absorbing felt 20 is extruded and smeared on the surface of the scale, thereby reducing the adhesion of uncooled asphalt on the surface of the scale. When the measurement of the loose paving thickness and paving temperature of asphalt is completed, the operator lifts the detection ruler 3 upward. After the detection ruler 3 completely separates from the annular airbag 19, the squeezed annular airbag 19 resumes its original state and sucks the lubricating oil in the oil storage ring 16 back into the annular airbag 19 and the oil-absorbing felt 20 to supplement the amount of oil adhered inside the oil-absorbing felt 20, facilitating the oiling treatment of the detection ruler 3 during the next measurement.

[0042] The using process of an asphalt loose paving thickness and paving temperature detector provided by the present utility model is as follows:

[0043] When detecting the loose paving thickness and paving temperature of asphalt:

[0044] The operator only needs to place the base 1 at the bottom end of the outer sleeve 2 on the asphalt pavement to be detected, insert the detection ruler 3 into the outer sleeve 2, insert the USB cable on the temperature probe 5 into the USB interface of the thermometer 4, and then hold the grip 8 at the top end of the detection ruler 3 and press the detection ruler 3 downward. After the temperature probe 5 at the bottom end of the detection ruler 3 is inserted into the bottom end of the asphalt pavement, the operator can read the loose paving thickness and paving temperature of the asphalt pavement through the observation hole 11 provided on the outer sleeve 2 and the thermometer 4;

[0045] When measuring the loose paving thickness and paving temperature of the asphalt, the detection ruler 3 pressed and moved down by the operator gradually contacts the annular airbag 19 and squeezes the annular airbag 19. At this time, the lubricating oil in the annular airbag 19 is gradually squeezed into the oil absorption felt 20 and the oil storage ring 16, and part of the air in the oil storage ring 16 is discharged. When the detection ruler 3 continues to move down and squeezes the oil absorption felt 20, the lubricating oil adsorbed on the oil absorption felt 20 is extruded and smeared on the surface of the scale, thereby reducing the adhesion of the uncooled asphalt on the surface of the scale. When the measurement of the loose paving thickness and paving temperature of the asphalt is completed, the operator lifts the detection ruler 3 upward. After the detection ruler 3 completely disengages from the annular airbag 19, the squeezed annular airbag 19 resumes its original shape and re-sucks the lubricating oil in the oil storage ring 16 into the annular airbag 19 and the oil absorption felt 20 to supplement the amount of oil adhered to the inside of the oil absorption felt 20, facilitating the oiling treatment of the detection ruler 3 during the next measurement.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical fields can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An asphalt loose paving thickness and paving temperature detector, comprising a base (1), an outer sleeve (2) and a detection ruler (3), characterized in that, The outer sleeve (2) is fixedly arranged at the top end of the base (1). One side of the top end of the outer sleeve (2) is fixedly connected with a thermometer (4). The bottom of the detection ruler (3) is fixedly connected with a temperature probe (5) that cooperates with the thermometer (4). The top end of the temperature probe (5) is fixedly connected with a USB wire (6). The thermometer (4) is provided with a socket (7) that matches the USB wire (6). The top end of the detection ruler (3) is fixedly provided with a handle (8) that is convenient for the operator to press. The inner parts of the outer sleeve (2) and the base (1) are provided with slots (9) that match the detection ruler (3). The outer sleeve (2) and the detection ruler (3) are provided with a measuring assembly that is convenient for the operator to measure the loose paving thickness of asphalt.

2. The asphalt loose paving thickness and paving temperature detector according to claim 1, wherein The measuring assembly includes a scale mark (10) fixedly arranged on one side of the detection ruler (3). An observation hole (11) that is convenient for the operator to observe is opened on the side of the outer sleeve (2) opposite to the scale mark (10). A scale pointer (12) that cooperates with the scale mark (10) is fixedly arranged in the middle of the observation hole (11).

3. The asphalt loose paving thickness and paving temperature detector according to claim 2, characterized in that, A guiding block (13) for restricting the insertion direction of the detection ruler (3) is fixedly arranged on one side of the detection ruler (3). A guiding groove (14) that matches the guiding block (13) is arranged inside the outer sleeve (2).

4. The asphalt loose paving thickness and paving temperature detector according to claim 1, characterized in that, A plurality of fixing wire clips (15) for restricting the position of the USB wire (6) are fixedly connected inside the detection ruler (3).

5. An asphalt loose paving thickness and paving temperature detector according to claim 1, characterized in that, An oiling assembly for oiling the surface of the detection ruler (3) is arranged inside the base (1). The oiling assembly includes an oil storage ring (16) fixedly arranged inside the slot (9). An oil injection hole (17) is opened at the bottom of the oil storage ring (16). A rubber plug (18) is plugged on the oil injection hole (17). An annular airbag (19) is fixedly connected to the inner ring of the oil storage ring (16). An oil absorption felt (20) for oiling the surface of the detection ruler (3) is fixedly arranged at the bottom of the annular airbag (19). A plurality of oil delivery holes one (21) communicating with the oil absorption felt (20) are arranged on the annular airbag (19). The outer surface of the oil absorption felt (20) is flush with the outer surface of the annular airbag (19). A plurality of mutually communicating oil delivery holes two (22) are arranged between the annular airbag (19) and the oil storage ring (16). A plurality of air inlet holes (23) for air intake are opened at the top end of the oil storage ring (16).

6. The asphalt loose paving thickness and paving temperature detector according to claim 5, characterized in that Dust-proof nets (24) for dust prevention are covered outside a plurality of the air inlet holes (23).