CN215810972U

CN215810972U - Temperature and thickness detection device for paved asphalt

Info

Publication number: CN215810972U
Application number: CN202121576314.8U
Authority: CN
Inventors: 周晨阳
Original assignee: Shaanxi Xijian Road And Bridge Engineering Co ltd
Current assignee: Shaanxi Xijian Road And Bridge Engineering Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-02-11
Anticipated expiration: 2031-07-12

Abstract

The application discloses a temperature and thickness detection device for paved asphalt, which comprises an inserted bar assembly, a temperature measurement sensor, a distance measurement sensor, a sleeve assembly and a supporting assembly; the temperature sensor is arranged at the bottom end of the inserted rod assembly; the distance measuring sensor is arranged on the side surface of the inserted link assembly; the inserted bar component extends into the sleeve component and is connected with the inner wall of the sleeve component in a sliding way; the supporting component is arranged on the outer side of the sleeve component and is in sliding connection with the outer wall of the sleeve component. The application effectively solves the technical problems that in the prior art, the thickness of the paved asphalt is measured to have large errors and the temperature and the thickness value of the paved asphalt can not be obtained simultaneously, and further the purpose that the temperature and the thickness value of the paved asphalt can be obtained simultaneously, accurately and intuitively is realized.

Description

Temperature and thickness detection device for paved asphalt

Technical Field

The application relates to the technical field of road and bridge construction, in particular to a temperature and thickness detection device for paving asphalt.

Background

In the road and bridge construction, asphalt concrete is the last layer of a road structure layer, the thickness and the flatness of the asphalt concrete directly influence the durability of a road and the driving comfort, and the detection of loose paving of the asphalt concrete mainly comprises two indexes of thickness and temperature: the thickness is an important quality control index of the asphalt concrete in road and bridge construction, and due to the irreversibility of the asphalt concrete construction, once the construction is completed, if the thickness is insufficient, only shoveling and re-paving can be performed, so that great economic loss is caused; the temperature is another important quality control index of the asphalt concrete in the road and bridge construction, the compaction quality of the asphalt concrete can be ensured only by rolling at high temperature, and after the temperature is lower than a certain temperature, no matter the tonnage of a road roller is increased or the number of times of compaction is increased, the compaction requirement cannot be met, so that the surface stones are vibrated and broken, the surface oil film is damaged, and the compaction degree is insufficient, so that the temperature measurement accuracy is ensured in the road and bridge construction. The loose thickness and the temperature of the asphalt pavement are required to be measured at any time in the paving process of the asphalt pavement so as to ensure that the temperature before compaction and the thickness after compaction meet the design requirements.

Therefore, when mainlines and highways of China and provinces are overhauled, the synchronous simultaneous implementation of thickness and temperature control on site cannot be realized, and particularly, no feasible measurement result exists in the thickness control. When most construction units carry out asphalt pavement construction at present, the lower layer and the middle layer of the high-grade pavement basically adopt a wire hanging method, and the upper layer basically adopts a non-contact type balance beam method; in the mainline of national province and highway overhaul construction, the non-contact type compensating beam method that all adopt, when survey the temperature and the thickness of the pitch that paves among the prior art, insert the contact pin that has temperature probe in the bituminous concrete that paves, and then read the temperature value, later pull out the contact pin, measure the length that has the pitch vestige that the contact pin point was adnexed with the ruler, this length regards as the thickness of pitch that paves promptly, the problem that exists among the prior art is that the contact pin inserts bottommost vertically when can't guarantee to measure, and there is great measuring error only to measure the length that has the pitch vestige, and can't guarantee in the above measuring method that the numerical value of the temperature and the thickness of pitch that measure obtains simultaneously.

SUMMERY OF THE UTILITY MODEL

This application has solved among the prior art that there is great error and can't obtain the technical problem who paves pitch temperature and thickness numerical value simultaneously in the thickness that measures the pitch that paves through the temperature and the thickness detection device who paves that provide, has realized can accurately obtain the purpose that paves pitch temperature and thickness numerical value simultaneously directly perceivedly.

The temperature and thickness detection device for the paved asphalt comprises an inserted bar assembly, a temperature measurement sensor, a distance measurement sensor, a sleeve assembly and a supporting assembly; the temperature sensor is arranged at the bottom end of the inserted rod assembly; the distance measuring sensor is arranged on the side surface of the inserted link assembly; the inserted bar assembly extends into the sleeve assembly and is in sliding connection with the inner wall of the sleeve assembly; the supporting component is arranged on the outer side of the sleeve component and is in sliding connection with the outer wall of the sleeve component.

In one possible implementation manner, the insertion rod assembly comprises an insertion rod, a display screen and slide rails symmetrically arranged on the outer wall of the insertion rod; the display screen is arranged on the outer wall of the top end of the inserted rod; the two sliding rails are fixedly connected to the outer wall of the inserted bar; the bottom end of the inserted rod is provided with a tip structure, and the temperature measuring sensor is fixedly connected to the outer wall of the tip structure; the distance measuring sensor is fixedly connected to the outer wall of the inserted rod; the inserted bar is connected with the inner wall of the sleeve component in a sliding manner through the sliding rail.

In one possible implementation, the sleeve assembly includes a sleeve, a base, and a stopper; the outer diameter of the base is larger than that of the sleeve, and the base is fixedly connected to the bottom end of the sleeve; the stop block is fixedly connected to the inner wall of the top end of the sleeve and is arranged corresponding to the ranging sensor up and down; the inner wall of the sleeve is symmetrically provided with sliding grooves, and the sliding grooves are in sliding connection with the sliding rails.

In one possible implementation, the plunger assembly further comprises a stopper rod; the limiting rod is inserted into the end part of the inserted rod, which is far away from the temperature measuring sensor; the distance between the limiting rod and the bottom end of the base is equal to the distance between the limiting rod and the bottom end of the inserted rod.

In a possible implementation manner, a gap exists between the stop block and the outer wall of the inserted rod, a gap exists between the distance measuring sensor and the inner wall of the sleeve, and a cross area exists between the stop block and the distance measuring sensor in a mutual projection manner.

In one possible implementation, the support assembly includes a sliding sleeve, a fixed sleeve, a limit nut, a spring, and a plurality of support rod assemblies disposed in an annular array about a centerline of the sliding sleeve; the sliding sleeve is sleeved on the outer wall of the sleeve and is in sliding connection with the outer wall of the sleeve; the fixed sleeve is fixedly connected to the outer wall of the sleeve; the limiting nut is in threaded connection with the outer wall of the sleeve; the spring is sleeved on the outer wall of the sleeve and is arranged between the fixed sleeve and the sliding sleeve; the supporting rod assembly is rotatably connected with the sliding sleeve, and the supporting rod assembly is rotatably connected with the fixed sleeve.

In one possible implementation, the support rod assembly includes a support rod and a connecting rod; the plurality of support rods are arranged on the periphery of the sliding sleeve in an annular array mode, and the end parts, close to the sliding sleeve, of the support rods are rotatably connected with the sliding sleeve; the connecting rods are arranged on the periphery of the fixed sleeve in an annular array mode, and the end parts, close to the fixed sleeve, of the connecting rods are in rotating connection with the fixed sleeve; the end part of the connecting rod, which deviates from the fixed sleeve, is rotatably connected with the middle end of the supporting rod.

In a possible implementation manner, the outer wall of the sleeve is provided with an external thread, and the limit nut is in threaded connection with the outer wall of the sleeve through the external thread.

One or more technical solutions provided in the present application have at least the following technical effects or advantages:

this application is through setting up the inserted bar subassembly, the temperature measurement sensor, the distance measurement sensor, sleeve subassembly and supporting component, and with supporting component sliding connection at the outer wall of sleeve subassembly, realize conveniently supporting sleeve subassembly when using, the vertical of inserted bar subassembly inserts when guaranteeing to measure simultaneously, set up the distance measurement sensor in the side of inserted bar subassembly, set up the temperature measurement sensor in the bottom of inserted bar subassembly, simultaneously with inserted bar subassembly and sleeve sliding connection, realize pressing the inserted bar subassembly when measuring, the inserted bar subassembly slides with sleeve subassembly relatively, and the bottom of inserted bar subassembly takes the temperature measurement sensor to insert to pitch, obtain temperature value through the temperature measurement sensor, the distance that the distance measurement sensor follows the inserted bar simultaneously moves down, the distance that the inserted bar moved down is the distance that the distance measurement sensor moved down, and then obtain thickness value through the distance measurement sensor simultaneously, it has great error and can't obtain simultaneously to pave pitch temperature value to have effectively solved among the prior art and measure the thickness of paving pitch and can's simultaneously The technical problem of the temperature and thickness values, and further the purpose of accurately and intuitively obtaining the temperature and thickness values of the paved asphalt at the same time is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present invention or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a temperature and thickness detection device for paving asphalt according to an embodiment of the present disclosure;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 with the support assembly removed;

FIG. 4 is a schematic view of the structure of FIG. 3 after the pin is inserted into the asphalt;

FIG. 5 is a front view of a temperature and thickness detection apparatus for paving asphalt according to an embodiment of the present disclosure after being folded;

FIG. 6 is an isometric view of a bayonet assembly, a sleeve assembly, a temperature sensor, and a distance measuring sensor provided by an embodiment of the present application.

Reference numerals: 1-a plunger assembly; 11-a plunger; 12-a display screen; 13-a slide rail; 14-a limiting rod; 2-a temperature measuring sensor; 3-a distance measuring sensor; 4-a sleeve assembly; 41-a sleeve; 411-a chute; 42-a base; 43-a stop block; 5-a support assembly; 51-a sliding sleeve; 52-a fixation sleeve; 53-a limit nut; 54-a spring; 55-a support rod assembly; 551-support bar; 552-link; 6-asphalt surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1, the temperature and thickness detection device for paving asphalt provided by the embodiment of the application comprises an inserted bar assembly 1, a temperature measuring sensor 2, a distance measuring sensor 3, a sleeve assembly 4 and a support assembly 5; the temperature sensor 2 is arranged at the bottom end of the inserted bar component 1; the distance measuring sensor 3 is arranged on the side surface of the inserted rod assembly 1; the inserted bar component 1 extends into the sleeve component 4 and is connected with the inner wall of the sleeve component 4 in a sliding way; the supporting component 5 is arranged outside the sleeve component 4 and is connected with the outer wall of the sleeve component 4 in a sliding mode.

Referring to fig. 1 and 6, the inserted link assembly 1 includes an inserted link 11, a display screen 12 and slide rails 13 symmetrically disposed on the outer wall of the inserted link 11; the display screen 12 is arranged on the outer wall of the top end of the inserted rod 11; the two slide rails 13 are fixedly connected to the outer wall of the inserted bar 11; the bottom end of the inserted rod 11 is provided with a tip structure, and the temperature measuring sensor 2 is fixedly connected to the outer wall of the tip structure; the distance measuring sensor 3 is fixedly connected to the outer wall of the inserted rod 11; sliding connection between the inner wall that inserted bar 11 passes through slide rail 13 and sleeve subassembly 4, temperature sensor 2 and range sensor 3 all are connected to display screen 12 through the signal line in this application embodiment, and display screen 12 is from taking the power, and then can directly acquire the data signal that temperature sensor 2 and range sensor 3 transmitted through display screen 12 to read temperature and thickness numerical value directly perceivedly.

Referring to fig. 1 and 6, the sleeve assembly 4 includes a sleeve 41, a base 42, and a stopper 43; the outer diameter of the base 42 is larger than that of the sleeve 41, and the base 42 is fixedly connected to the bottom end of the sleeve 41; the stop block 43 is fixedly connected to the inner wall of the top end of the sleeve 41 and is arranged corresponding to the distance measuring sensor 3 up and down; spout 411 has been seted up to the inner wall symmetry of sleeve 41, sliding connection between spout 411 and the slide rail 13, sleeve 41 is hollow structure with base 42 in this application implementation, base 42 communicates with each other with sleeve 41 is inside, and base 42 plays the stable effect of support to sleeve 41, dog 43 fixed connection is on the inside wall on sleeve 41 top, the top surface of dog 43 flushes with sleeve 41's top, inserted bar 11 can slide from top to bottom for sleeve 41 through spout 411 and slide rail 13.

Referring to fig. 1 and 3, the plunger assembly 1 further includes a stopper rod 14; the limiting rod 14 is inserted in the end part of the inserted rod 11 departing from the temperature measuring sensor 2; the distance between the limiting rod 14 and the bottom end of the base 42 is equal to the distance between the limiting rod 14 and the bottom end of the inserted rod 11, in the embodiment of the present invention, the limiting rod 14 is inserted into the inserted rod 11, and the limiting rod 14 is overlapped with the top end of the sleeve 41, the distance between the limiting rod 14 and the bottom end of the base 42 is equal to the distance between the limiting rod 14 and the bottom end of the inserted rod 11, so as to ensure that the tip of the inserted rod 11 is flush with the bottom surface of the base 42 when the inserted rod 11 is overlapped on the sleeve 41 before measurement, i.e. the tip of the inserted rod 11 just contacts with the top surface of the asphalt, in the embodiment of the present invention, when the inserted rod 11 is overlapped on the sleeve 41 through the limiting rod 14, the tip of the ranging sensor 3 is ensured to contact with the bottom surface 43 of the stopper, at this time, the measurement value of the ranging sensor 3 is zero, the tip of the inserted rod 11 just contacts with the top surface of the asphalt, when measurement, the top end of the inserted rod 11 is squeezed, so that the tip of the inserted rod 11 is inserted into the asphalt until the tip collides with the ground, the distance measuring sensor 3 moves downwards along with the inserting rod 11, and the distance that the tip of the inserting rod 11 moves downwards is equal to the distance that the distance measuring sensor 3 moves downwards, namely the distance that the distance measuring sensor 3 moves downwards relative to the stop block 43, namely the value displayed by the current distance measuring sensor 3.

Referring to fig. 2-4, there is a gap between the outer wall of the stopper 43 and the insertion rod 11, there is a gap between the distance measuring sensor 3 and the inner wall of the sleeve 41, and there is a cross area in the mutual projection between the stopper 43 and the distance measuring sensor 3, in this embodiment, it is ensured that the insertion rod 11 does not frictionally interfere with the stopper 43 when moving down, it is ensured that the distance measuring sensor 3 does not frictionally interfere with the inner wall of the sleeve 41 when moving down, the distance measuring sensor 3 employs an infrared sensor, the emitting end is disposed toward the stopper 43, and it is ensured that the infrared emitted by the emitting end can irradiate the bottom surface of the stopper 43.

Referring to fig. 1 and 5, the support assembly 5 includes a sliding sleeve 51, a fixed sleeve 52, a stop nut 53, a spring 54, and a plurality of support rod assemblies 55 arranged in an annular array around a center line of the sliding sleeve 51; the sliding sleeve 51 is sleeved on the outer wall of the sleeve 41 and is in sliding connection with the outer wall of the sleeve 41; the fixing sleeve 52 is fixedly connected to the outer wall of the sleeve 41; the limiting nut 53 is in threaded connection with the outer wall of the sleeve 41; the spring 54 is sleeved on the outer wall of the sleeve 41 and is arranged between the fixed sleeve 52 and the sliding sleeve 51; rotate between bracing piece subassembly 55 and the sliding sleeve 51 and be connected, rotate between bracing piece subassembly 55 and the fixed cover 52 and be connected, before measuring in this application embodiment, move sliding sleeve 51 downwards, and then extrude spring 54, strut bracing piece subassembly 55 on pitch, strut the back, twist down stop nut 53, make stop nut 53 bottom surface and sliding sleeve 51 bottom contact, make sliding sleeve 51 spacing and continuously extrude spring 54 through stop nut 53.

Referring to fig. 1 and 5, the support rod assembly 55 includes a support rod 551 and a link 552; a plurality of support rods 551 are annularly arranged on the periphery of the sliding sleeve 51 in an array manner, and the end parts of the support rods 551 close to the sliding sleeve 51 are rotatably connected with the sliding sleeve 51; a plurality of connecting rods 552 are arranged on the periphery of the fixing sleeve 52 in an annular array, and the ends of the connecting rods 552 close to the fixing sleeve 52 are rotatably connected with the fixing sleeve 52; connecting rod 552 deviates from the tip of fixed cover 52 and is connected with the rotation of the middle-end of bracing piece 551, when sliding sleeve 51 moved down along sleeve 41 outer wall in this application embodiment, drive bracing piece 551 top and move down, because the middle-end of bracing piece 551 passes through connecting rod 552 and is connected with fixed cover 52 rotation, therefore prop open bracing piece 551 through connecting rod 552, the quantity of this application embodiment is three, and the annular array sets up in sliding sleeve 51's the outside, bracing piece 551, connecting rod 552 props open the back and is spacing with sliding sleeve 51 through stop nut 53, make bracing piece 551 with sleeve 41 and the whole vertical support of inserted bar 11 on pitch face 6, be convenient for follow-up inserted bar 11 insert the pitch smoothly in measure. The outer wall of sleeve 41 is provided with the external screw thread in this application embodiment, and stop nut 53 passes through the outer wall threaded connection of external screw thread and sleeve 41.

The working principle of the temperature and thickness detection device for paving asphalt provided by the embodiment of the application is as follows:

before measurement, the base 42 is placed on the asphalt surface 6, the sliding sleeve 51 is pressed downwards, the sliding sleeve 51 presses the spring 54 downwards, meanwhile, the sliding sleeve 51 moves downwards to prop the support rods 551 and the connecting rods 552 open, the bottom ends of the three support rods 551 are propped on the asphalt surface 6, after the opening, the limiting nut 53 is screwed downwards, the bottom surface of the limiting nut 53 is in contact with the top end of the sliding sleeve 51, then the hand is released, the sliding sleeve 51 is limited on the pressed position through the limiting nut 53 and the spring 54, then the limiting rod 14 is removed, the inserting rod 11 is pressed downwards by the hand, the tip end of the inserting rod 11 is inserted into the asphalt surface 6 until the tip end of the inserting rod 11 is in contact with the ground and is not in motion, at the moment, the tip end of the inserting rod 11 touches the ground, the temperature measuring sensor 2 extends into the asphalt, the distance measuring sensor 3 is separated from the stop block 43, and the values of the temperature and the thickness are finally and visually read through the display screen 12, after the numerical value is recorded, the inserted link 11 is pulled out of the asphalt, and the limit rod 14 is inserted into the inserted link 11, so that the inserted link 11 is continuously overlapped on the top end of the sleeve 41, then the sliding sleeve 51 is pressed, and the limit nut 53 is screwed upwards, so that the sliding sleeve 51 is upwards restored to the original position, and meanwhile, the support rod 551 and the connecting rod 552 are folded, and the whole device is conveniently taken away. The sleeve 41, the inserted link 11, the support rod 551, the connecting rod 552, the base 42, the sliding sleeve 51, the fixing sleeve 52 and the limit nut 53 are all made of high-temperature-resistant light alloy materials, so that the whole device is light in weight and convenient to carry and use.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.

Claims

1. The temperature and thickness detection device for the paved asphalt is characterized by comprising an inserted bar assembly (1), a temperature measurement sensor (2), a distance measurement sensor (3), a sleeve assembly (4) and a support assembly (5);

the temperature measuring sensor (2) is arranged at the bottom end of the inserted rod assembly (1);

the distance measuring sensor (3) is arranged on the side surface of the inserted rod assembly (1);

the inserted bar assembly (1) extends into the sleeve assembly (4) and is in sliding connection with the inner wall of the sleeve assembly (4);

the supporting component (5) is arranged on the outer side of the sleeve component (4) and is in sliding connection with the outer wall of the sleeve component (4).

2. The temperature and thickness detection device for paving asphalt according to claim 1, wherein the inserted bar assembly (1) comprises an inserted bar (11), a display screen (12) and slide rails (13) symmetrically arranged on the outer wall of the inserted bar (11);

the display screen (12) is arranged on the outer wall of the top end of the inserted rod (11);

the two sliding rails (13) are fixedly connected to the outer wall of the inserted rod (11);

the bottom end of the inserted rod (11) is provided with a tip structure, and the temperature measuring sensor (2) is fixedly connected to the outer wall of the tip structure;

the distance measuring sensor (3) is fixedly connected to the outer wall of the inserted rod (11);

the inserted bar (11) is connected with the inner wall of the sleeve component (4) in a sliding mode through the sliding rail (13).

3. The temperature and thickness detection device for paving asphalt of claim 2, wherein the sleeve assembly (4) comprises a sleeve (41), a base (42) and a stop (43);

the outer diameter of the base (42) is larger than that of the sleeve (41), and the base (42) is fixedly connected to the bottom end of the sleeve (41);

the stop block (43) is fixedly connected to the inner wall of the top end of the sleeve (41) and is arranged corresponding to the ranging sensor (3) up and down;

the inner wall of the sleeve (41) is symmetrically provided with sliding grooves (411), and the sliding grooves (411) are in sliding connection with the sliding rails (13).

4. The temperature and thickness detection device for paving asphalt according to claim 3, wherein the inserted rod assembly (1) further comprises a limiting rod (14);

the limiting rod (14) is inserted into the end part, deviating from the temperature measuring sensor (2), of the inserting rod (11);

the distance between the limiting rod (14) and the bottom end of the base (42) is equal to the distance between the limiting rod (14) and the bottom end of the inserted rod (11).

5. The device for detecting temperature and thickness of paving asphalt according to claim 3, characterized in that a gap exists between the stop block (43) and the outer wall of the inserted rod (11), a gap exists between the distance measuring sensor (3) and the inner wall of the sleeve (41), and a cross area exists between the mutual projection of the stop block (43) and the distance measuring sensor (3).

6. The temperature and thickness detection device for paving asphalt according to claim 3, wherein the support assembly (5) comprises a sliding sleeve (51), a fixed sleeve (52), a limit nut (53), a spring (54) and a plurality of support rod assemblies (55) arranged in an annular array around a center line of the sliding sleeve (51);

the sliding sleeve (51) is sleeved on the outer wall of the sleeve (41) and is in sliding connection with the outer wall of the sleeve (41);

the fixed sleeve (52) is fixedly connected to the outer wall of the sleeve (41);

the limiting nut (53) is in threaded connection with the outer wall of the sleeve (41);

the spring (54) is sleeved on the outer wall of the sleeve (41) and is arranged between the fixed sleeve (52) and the sliding sleeve (51);

the supporting rod assembly (55) is rotatably connected with the sliding sleeve (51), and the supporting rod assembly (55) is rotatably connected with the fixing sleeve (52).

7. The apparatus for detecting temperature and thickness of paving asphalt according to claim 6, wherein the support rod assembly (55) comprises a support rod (551) and a connecting rod (552);

the plurality of support rods (551) are arranged on the periphery of the sliding sleeve (51) in an annular array, and the end parts, close to the sliding sleeve (51), of the support rods (551) are rotatably connected with the sliding sleeve (51);

a plurality of said connecting rods (552) are arranged in an annular array on the periphery of said cover (52), said connecting rods (552) being rotatably connected to said cover (52) near the end of said cover (52);

the end of the connecting rod (552) departing from the fixed sleeve (52) is rotatably connected with the middle end of the supporting rod (551).

8. The temperature and thickness detection device for paving asphalt according to claim 6, wherein the outer wall of the sleeve (41) is provided with an external thread, and the limit nut (53) is in threaded connection with the outer wall of the sleeve (41) through the external thread.