Temperature control type non-contact asphalt concrete slope test device

Abstract

The invention relates to the technical field of engineering material tests, in particular to a temperature control type non-contact asphalt concrete slope test device. According to the technical scheme, the storage box comprises a base, a box body is hinged to the base, a box cover is hinged to the box body, the storage box further comprises a limiting mechanism, the limiting mechanism comprises clamping bases, the clamping bases are symmetrically and fixedly connected to the rear side of the inner wall of the box body, bolts are inserted into the clamping bases in a penetrating mode, and a storage frame A is inserted into the clamping bases; and round holes matched with the plug pins for use are symmetrically formed in the placement frame A in a penetrating mode, and a placement frame B is arranged in the placement frame A. Through the design of the limiting mechanism, when the gravity center of the Marshall test piece is detected, the Marshall test piece can be limited through the fixing ring, so that the Marshall test piece and the placing frame B are coaxial, and through the design of the push rod, the position of the Marshall test piece can be adjusted according to the swinging direction of the placing frame B, so that the accuracy of the Marshall test piece is improved. Therefore, the accuracy of the slope test is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering material testing, and particularly relates to a temperature-controlled non-contact asphalt concrete slope test device. Background Art

[0002] Asphalt concrete is a common road construction material, which has the characteristics of good durability, convenient construction and low maintenance cost, and is widely used in highway construction and maintenance. Due to the characteristics of asphalt, asphalt concrete will flow in high-temperature environments and slope environments. When the flowing phenomenon is serious, it will pose a great threat to traffic and public facilities.

[0003] In order to prevent this phenomenon from occurring, before laying asphalt concrete, it is necessary to conduct a slope flow test on the asphalt concrete. When the existing slope flow test device conducts the test, it usually makes the asphalt concrete into Marshall specimens and directly fixes the Marshall specimens on the inclined table, and then measures the Marshall specimens through a displacement sensor. Due to the characteristics of asphalt concrete, there are easily holes in the Marshall specimens, resulting in uneven weight distribution of the Marshall specimens. After long-term high-temperature baking, the internal holes of the Marshall specimens will collapse, and then the Marshall specimens will deflect to the side of the collapse, which has a great impact on the test results. The displacement sensor can only detect the fixed points on the outer wall of the Marshall specimens and cannot detect the direction of the overall center of gravity offset of the Marshall specimens. Summary of the Invention

[0004] In order to overcome the disadvantages in the prior art, the present invention provides a temperature-controlled non-contact asphalt concrete slope test device.

[0005] The technical implementation solution of the present invention is: a temperature-controlled non-contact asphalt concrete slope test device, including a base, a box body is hinged on the base, a box cover is hinged on the box body, and a limiting mechanism is further included. The limiting mechanism includes a card seat. The card seats are symmetrically and fixedly connected to the rear side of the inner wall of the box body. A plug pin is inserted through the card seat. A placement rack A is inserted into the card seat. Circular holes for cooperating with the plug pin are symmetrically and penetratingly opened on the placement rack A. A placement rack B is arranged inside the placement rack A. A fixing ring is slidably connected in an embedded manner in the placement rack B. A universal shaft is hinged to the bottom of the placement rack B. The bottom of the inner wall of the box body is symmetrically rotatably connected with sleeves. A positioning seat is movably connected in the sleeves. A countersunk hole for cooperating with the universal shaft is opened at the top of the positioning seat. The bottom end of the universal shaft is inserted into the countersunk hole. An adjustment mechanism is further included. The adjustment mechanism includes a push rod. A plurality of uniformly distributed push rods are arranged on the outer side of the placement rack A. A detection mechanism is further included.

[0006] Preferably, the limiting mechanism also includes a sliding frame, the sliding frame is slidably connected to the bottom of the inner wall of the box, and is symmetrically rotatably connected to a rotating ring, a convex shaft is fixed to the top of the rotating ring, the convex shaft is stuck in the sliding frame and slides therein, a connecting rod is fixedly connected between the inner wall of the rotating ring and the outer wall of the sleeve, two guide grooves A are provided on the inner wall of the sleeve, sliding blocks used in conjunction with the guide grooves A are symmetrically fixed to the outer wall of the positioning seat, vertical grooves are symmetrically provided at the bottom of the positioning seat, guide columns are slidably connected in the vertical grooves, and the guide columns are fixed to the bottom of the inner wall of the box.

[0007] Preferably, the limiting mechanism also includes a telescopic shaft, which is symmetrically and slidably connected in the placement rack A, and a slot A is provided on the outer wall of the telescopic end of the telescopic shaft. An elastic clip symmetrically fixedly connected in the placement rack A for use with the slot A is provided, and a limiting ring is fixedly connected to the telescopic end of the telescopic shaft for use with the placement rack A and the placement rack B, and a toggle plate symmetrically fixedly connected to the bottom of the limiting ring for use with the placement rack A and the placement rack B is provided.

[0008] Preferably, the limiting mechanism also includes a U-shaped frame, the U-shaped frame is symmetrically slidably connected inside the placement frame B, the bottom end of the fixing ring is fixed to the U-shaped frame, the placement frame B is symmetrically slidably connected with an elastic limiting pin, and one side of the U-shaped frame is provided with a hemispherical groove used in conjunction with the elastic limiting pin.

[0009] Preferably, the adjustment mechanism also includes a guide frame, and a plurality of evenly distributed guide frames are provided at the bottom of the placement frame B, and the bottom ends of several of the guide frames are fixedly connected to the box body, and contact rods are slidably connected in several of the guide frames, and an elastic member A is provided between the top of the contact rod and the guide frame, and the top of the contact rod is rollingly connected with a ball used in conjunction with the placement frame B, and a plurality of evenly distributed slots B are provided on one side of the contact rod, and a plurality of elastic wedge blocks used in conjunction with the slots B are slidably connected in several of the guide frames, a connecting rod is hinged at the bottom end of the contact rod, and a push block is hinged at one end of the connecting rod, and a plurality of evenly distributed rectangular frames are provided at the bottom of the placement frame B, and several rectangular frames are fixedly connected to the bottom of the inner wall of the box body, the push block is inserted into the rectangular frame and slides therein, and a plurality of rectangular frames are slidably connected with a sliding rod used in conjunction with the push block.

[0010] Preferably, the adjusting mechanism further includes guide rails. Guide rails are provided at the bottoms of several push rods, and the bottoms of several guide rails are fixedly connected to the bottom of the inner wall of the box body. A plurality of uniformly distributed guide grooves B are formed in a penetrating manner at the top of the rotating ring. A sliding shaft is slidably connected in each of the plurality of guide grooves B. The top end of the sliding shaft slidably penetrates the guide rail and is fixedly connected to a push rod. A special-shaped groove is formed in a penetrating manner on one side of the sliding rod. An extrusion block and a limiting block that cooperate with each other are slidably connected in the special-shaped groove. The push rod is used in cooperation with the extrusion block. A plurality of wedge-shaped grooves that cooperate with the limiting block are formed at the bottoms of several push rods. Elastic members B are provided between several push rods and the bottom of the inner wall of the box body.

[0011] Preferably, the adjusting mechanism further includes a telescopic rod. The telescopic rods are symmetrically arranged on the outer side of the sleeve. The fixed end of the telescopic rod is fixedly connected to the bottom of the inner wall of the box body. The telescopic end of the telescopic rod is used in cooperation with the placing rack B. A vertical groove is formed in a penetrating manner on the outer wall of the fixed end of the telescopic rod. A protruding shaft is fixedly connected to the outer wall of the telescopic end of the telescopic rod. The protruding shaft is clamped into the vertical groove and slides therein. Two guide grooves C that cooperate with the protruding shaft are formed on the outer wall of the fixed ring.

[0012] Preferably, the detection mechanism includes a socket. The sockets are symmetrically and fixedly connected to the bottom of the inner wall of the box body. The universal shaft is inserted into the socket. A sensor A that cooperates with the placing rack B is fixedly connected to the outer wall of the socket.

[0013] Preferably, the detection mechanism further includes a sensor B. The sensors B that cooperate with the placing rack B are symmetrically installed on the outer wall of the socket.

[0014] Preferably, the detection mechanism further includes a control panel. The control panel is installed on the box cover. The control panel is electrically connected to the sensor A and the sensor B. Beneficial effects

[0015] 1. Through the design of the limiting mechanism of the present invention, when detecting the center of gravity of the Marshall specimen, the Marshall specimen can be limited by the fixed ring, so that the Marshall specimen is coaxial with the placing rack B. Through the cooperation of the positioning seat and the universal shaft, the placing rack B can be driven to swing around the connection point of the universal shaft under the action of the center of gravity of the Marshall specimen itself, so as to judge the position of the center of gravity of the Marshall specimen. Through the design of the push rod, the position of the Marshall specimen can be adjusted according to the swinging direction of the placing rack B, thereby improving the accuracy of the slope test.

[0016] 2. Through the design of the contact rod, the present invention can accurately judge the swing angle of the placement rack B. When the ball on the contact rod is squeezed, the connecting rod drives the push block to push the sliding rod to move, which can accurately control the moving distance of the push rod, thereby preventing the inaccurate moving distance of the push rod pushing the Marshall specimen and resulting in inaccurate experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is an installation schematic diagram at the sliding rack of the present invention; Figure 3 is a schematic structural diagram of the limiting mechanism of the present invention; Figure 4 is an installation schematic diagram at the positioning seat of the present invention; Figure 5 is an installation schematic diagram at the guiding column of the present invention; Figure 6 is an installation schematic diagram at the elastic clip of the present invention; Figure 7 is an installation schematic diagram at the elastic limiting pin of the present invention; Figure 8 is a schematic structural diagram of the adjustment mechanism of the present invention; Figure 9 is an installation schematic diagram at the elastic wedge block of the present invention; Figure 10 is an installation schematic diagram at the limiting block of the present invention; Figure 11 is an installation schematic diagram at the telescopic rod of the present invention; Figure 12 is a schematic structural diagram of the telescopic rod of the present invention; Figure 13 is a schematic structural diagram of the detection mechanism of the present invention.

[0018] In the figure: 1_base, 101_box, 102_box cover, 201_card seat, 2011_pin, 202_placing rack A, 2021_placing rack B, 203_fixing ring, 204_universal shaft, 205_sleeve, 206_positioning seat, 207_push rod, 301_sliding rack, 302_rotating ring, 303_connecting rod, 304_guide column, 401_telescopic shaft, 402_elastic clip, 403_limiting ring, 404_sliding plate , 501_U-shaped frame, 502_elastic limit pin, 601_guide frame, 602_contact rod, 603_elastic wedge block, 604_connecting rod, 605_push block, 606_sliding rod, 701_guide rail, 702_sliding shaft, 703_push rod, 704_extrusion block, 705_limit block, 801_telescopic rod, 901_socket, 902_sensor A, 1001_sensor B, 1101_control panel, 100_Marshall specimen. DETAILED DESCRIPTION

[0019] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position. Example 1

[0020] A temperature-controlled non-contact asphalt concrete slope test device, such as Figures 1-5As shown in the figure, it includes a base 1, a box body 101 is hinged on the base 1, a box cover 102 is hinged on the box body 101, and a limiting mechanism is further included. The limiting mechanism includes a clamping seat 201. The clamping seats 201 are symmetrically and fixedly connected to the rear side of the inner wall of the box body 101. A pin 2011 is inserted through the clamping seat 201. A placing rack A202 is inserted into the clamping seat 201. Circular holes for cooperating with the pin 2011 are symmetrically and penetratingly formed in the placing rack A202. The pin 2011 is used to limit the position of the placing rack A202. A placing rack B2021 is arranged inside the placing rack A202. A fixing ring 203 is embedded and slidably connected in the placing rack B2021. A universal shaft 204 is hinged to the bottom of the placing rack B2021. The bottom of the inner wall of the box body 101 is symmetrically rotatably connected with sleeves 205. The two sleeves 205 are arranged in one-to-one correspondence with the two placing racks B2021. The sleeve 205 is coaxial with the corresponding fixing ring 203. A positioning seat 206 is movably connected in the sleeve 205. A counterbore for cooperating with the universal shaft 204 is formed at the top of the positioning seat 206. The bottom end of the universal shaft 204 is inserted into the counterbore. A adjusting mechanism is further included. The adjusting mechanism includes a push rod 207. Four uniformly distributed push rods 207 are arranged on the outer side of the placing rack A202. A detection mechanism is also included.

[0021] As Figures 2-3 shown Figure 5 in the figure, the limiting mechanism further includes a sliding frame 301. The sliding frame 301 is slidably connected to the bottom of the inner wall of the box body 101, and a rotating ring 302 is symmetrically and rotatably connected. The sliding frame 301 is located in front of the two sleeves 205. The rotating ring 302 is coaxial with the corresponding fixing ring 203. A convex shaft is fixedly connected to the front side of the top of the rotating ring 302. The convex shaft is clamped into the sliding frame 301 and slides therein. A connecting rod 303 is jointly fixedly connected between the inner wall of the rotating ring 302 and the outer wall of the sleeve 205. Two guide grooves A are formed in the inner wall of the sleeve 205. Sliding blocks for cooperating with the guide grooves A are symmetrically and fixedly connected to the bottom of the outer wall of the positioning seat 206. Vertical grooves are symmetrically formed at the bottom of the positioning seat 206. Guide columns 304 are slidably connected in the vertical grooves. The guide columns 304 are fixedly connected to the bottom of the inner wall of the box body 101. The guide columns 304 are used to limit the moving track of the positioning seat 206.

[0022] As Figure 4 shown Figure 6As shown in the figure, the limiting mechanism further includes a telescopic shaft 401. The telescopic shaft 401 is symmetrically and slidably connected inside the placing rack A202. A clamping groove A is formed on the outer wall of the telescopic end of the telescopic shaft 401. Elastic clamping pieces 402 that cooperate with the clamping groove A are symmetrically fixed inside the placing rack A202. The elastic clamping pieces 402 are used to limit the position of the telescopic end of the telescopic shaft 401. A limiting ring 403 is fixed to the telescopic end of the telescopic shaft 401. The limiting ring 403 is used in cooperation with the placing rack A202 and the placing rack B2021. Dialing plates 404 that cooperate with the placing rack A202 and the placing rack B2021 are symmetrically fixed to the bottom of the limiting ring 403. The dialing plates 404 can provide support for the placing rack B2021.

[0023] As Figures 6-7 shown in the figure, the limiting mechanism further includes a U-shaped frame 501. The U-shaped frame 501 is symmetrically and vertically slidably connected through the placing rack B2021. The top end of the U-shaped frame 501 extends to the upper side of the placing rack B2021. The bottom end of the fixed ring 203 is fixed to the U-shaped frame 501. Elastic limiting pins 502 are symmetrically slidably connected inside the placing rack B2021. A hemispherical groove that cooperates with the elastic limiting pin 502 is formed on one side of the U-shaped frame 501. The elastic limiting pins 502 are used to limit the position of the U-shaped frame 501.

[0024] As Figure 3 with Figures 8-10 shown in the figure, the adjusting mechanism further includes a guiding frame 601. Four guiding frames 601 evenly distributed are arranged at the bottom of the placing rack B2021. The bottom ends of the four guiding frames 601 are all fixed to the box body 101. Contact rods 602 are vertically slidably connected inside the four guiding frames 601. An elastic member A is arranged between the top end of the contact rod 602 and the guiding frame 601. The elastic member A is a compression spring. A ball that cooperates with the placing rack B2021 is rollingly connected to the top end of the contact rod 602. A number of evenly distributed clamping grooves B are formed on one side of the contact rod 602. Elastic wedge-shaped blocks 603 that cooperate with a number of the clamping grooves B are horizontally slidably connected inside the four guiding frames 601. The inclination angle of the upper inclined surface of the elastic wedge-shaped block 603 is smaller than that of the lower inclined surface. The bottom end of the contact rod 602 is hinged to a connecting rod 604. One end of the connecting rod 604 is hinged to a pushing block 605. Four rectangular frames evenly distributed are arranged at the bottom of the placing rack B2021. The four rectangular frames are arranged in one-to-one correspondence with the four guiding frames 601. The four rectangular frames are all fixed to the inner bottom wall of the box body 101. The pushing block 605 is inserted into the corresponding rectangular frame and horizontally slides inside it. Sliding rods 606 that cooperate with the pushing block 605 are slidably connected inside the four rectangular frames. The sliding rods 606 are located below the corresponding push rods 207.

[0025] As Figure 10As shown, the adjustment mechanism also includes a guide rail 701, and the bottom of the four push rods 207 are each provided with a guide rail 701. The four guide rails 701 are arranged in a one-to-one correspondence with the four guide frames 601. The bottom ends of the four guide rails 701 are fixedly connected to the bottom of the inner wall of the box body 101. The top of the rotating ring 302 is provided with four evenly distributed guide grooves B, and the four guide grooves B are slidably connected with sliding shafts 702. The top of the sliding shaft 702 slides through the guide rail 701 and is fixedly connected with a push rod 703. A special-shaped groove is provided on one side of the sliding rod 606, and an extrusion block 704 and a limit block 705 that cooperate with each other are slidably connected in the special-shaped groove. The push rod 703 is used in conjunction with the extrusion block 704. The bottom of the four push rods 207 is provided with a plurality of wedge-shaped grooves that cooperate with the limit blocks 705. Elastic parts B are provided between the four push rods 207 and the bottom of the inner wall of the box body 101, and the elastic parts B are elastic telescopic rods.

[0026] like Figure 11 and Figure 12 As shown, the adjustment mechanism also includes a telescopic rod 801, and the telescopic rod 801 is symmetrically arranged on the outer side of the sleeve 205. The fixed end of the telescopic rod 801 is fixedly connected to the bottom of the inner wall of the box body 101, and the telescopic end of the telescopic rod 801 is used in conjunction with the placement rack B2021. When the telescopic ends of two adjacent telescopic rods 801 are extended, the placement rack B2021 can be made horizontal. A vertical groove is penetrated through the outer wall of the fixed end of the telescopic rod 801, and a protruding shaft is fixedly connected to the outer wall of the telescopic end of the telescopic rod 801. The protruding shaft is stuck in the vertical groove and slides therein, and the outer wall of the fixed ring 203 is provided with two guide grooves C used in conjunction with the protruding shaft.

[0027] Initially, the rack A202 is inserted into the corresponding holder 201, the latch 2011 is inserted into the round hole of the rack A202, the universal shaft 204 is in a suspended state, and the toggle plate 404 contacts the bottom surface of the corresponding rack B2021 to provide support for the rack B2021 to prevent the rack B2021 from falling due to the impact. Figure 6As shown, the bottom end of the limiting ring 403 is in the same horizontal plane as the bottom surfaces of the placement rack A202 and the placement rack B2021, and the top of the fixing ring 203 is higher than the top surface of the placement rack B2021. The staff first puts the bottom end of the Marshall specimen 100 into the fixing ring 203, and the fixing ring 203 limits the Marshall specimen 100 to prevent the Marshall specimen 100 from sliding arbitrarily on the placement rack B2021. Then the staff pushes the sliding rack 301 to slide to the left through the handle on the sliding rack 301, and the sliding rack 301 squeezes the convex shafts on the two rotating rings 302, so that the rotating ring 302 rotates clockwise with the connection point of the box body 101 as the center of the circle, and the rotating ring 302 drives the sleeve 205 to rotate clockwise through the connecting rod 303, and the sleeve 205 squeezes the sliding block of the positioning seat 206 through the guide groove A therein, and the sliding block is subjected to force. The movable positioning seat 206 is lifted and slid upward. At this time, the two adjacent guide columns 304 guide the corresponding positioning seat 206 to prevent the positioning seat 206 from rotating. When the sliding block slides to the level of the guide groove A, the sliding block is no longer squeezed by the guide groove A, so that the positioning seat 206 no longer lifts and slides. At this time, the sliding frame 301 is no longer pushed, so that the sleeve 205 no longer rotates. After the sleeve 205 rotates, the protruding shaft on the telescopic end of the telescopic rod 801 is at the lower corner of the guide groove C on the outer wall of the sleeve 205. After the positioning seat 206 is lifted upward, the bottom end of the universal shaft 204 is inserted into the countersunk hole at the top of the positioning seat 206. The countersunk hole of the positioning seat 206 provides support for the universal shaft 204, thereby preventing the toggle plate 404 from no longer contacting the bottom surface of the corresponding placement rack B2021, and the placement rack B2021 from falling due to its own weight.

[0028] Initially, the top ends of the four contact rods 602 corresponding to the placement rack B2021 are in the same horizontal plane, and the ball bearings on the top of the contact rods 602 fit the bottom surface of the placement rack B2021. At this time, the staff presses the toggle plate 404 downward, and the toggle plate 404 is forced to drive the limit ring 403 to slide downward, and the limit ring 403 drives the telescopic end of the telescopic shaft 401 to extend downward, and the telescopic end of the telescopic shaft 401 squeezes the elastic clip 402 through the slot A thereon, and the elastic clip 402 is forced to shrink and deform, thereby making the telescopic end of the telescopic shaft 401 movable, and then the limit ring 403 is no longer in contact with the placement rack A202 and the placement rack B2021. Due to the holes inside the Marshall specimen 100, the weight distribution of the Marshall specimen 100 is The distribution is uneven, the center of gravity of the Marshall specimen 100 is not in the same vertical line as the center of the placement rack B2021. The placement rack B2021 is affected by the center of gravity of the Marshall specimen 100 and swings and tilts with the connection of the universal shaft 204 as the center of the circle, and exerts downward pressure on the balls on one or two contact rods 602. At this time, the swing direction of the placement rack B2021 is consistent with the direction of the center of gravity offset of the Marshall specimen 100, thereby completing the judgment of the center of gravity offset direction of the Marshall specimen 100. The ball is forced to drive the contact rod 602 to slide downward, and the elastic member A is forced to shrink. It is worth noting that during the sliding process of the contact rod 602, the upper inclined surface of the elastic wedge block 603 is squeezed by several slots B of the contact rod 602. Due to the angle characteristics of the inclined surface, the elastic wedge block 603 can slide easily. As the elastic member A contracts, the reaction force of the elastic member A on the contact rod 602 gradually increases, thereby preventing the placement rack B2021 from tilting excessively. When the contact rod 602 slides downward, it squeezes the connecting rod 604. The connecting rod 604 is forced to drive the push block 605 to slide horizontally along the corresponding rectangular frame. The push block 605 squeezes the sliding rod 606. The sliding rod 606 is forced to slide synchronously with the push block 605 until the placement rack B2021 no longer tilts and the push block 605 no longer moves. Then the staff drives the sliding rack 301 to slide to the left again through the handle on the sliding rack 301, thereby causing the sleeve 205 to rotate clockwise, and the sliding block of the positioning seat 206 slides along the horizontal plane of the guide groove A. The seat 206 does not move, and the guide groove C squeezes the protruding shaft on the telescopic end of the telescopic rod 801, so that the protruding shaft drives the telescopic end of the telescopic rod 801 to extend upward. At this time, the telescopic ends of the two adjacent telescopic rods 801 extend synchronously, and then the telescopic end of the telescopic rod 801 contacts and squeezes the bottom surface of the placement rack B2021, so that the placement rack B2021 swings to the horizontal with the connection point of the universal shaft 204 as the center of the circle. The bottom surface of the placement rack B2021 no longer squeezes the ball of the contact rod 602. Due to the angle characteristics of the lower inclined surface of the elastic wedge block 603, the lower inclined surface of the elastic wedge block 603 squeezes a number of slots B. At this time, the elastic force of the elastic member A cannot drive the contact rod 602 to rise and reset, so that the push block 605 corresponding to the contact rod 602 cannot move.Then the staff lifts the toggle plate 404 upward, and the toggle plate 404 drives the limit ring 403 to lift up and reset, and the telescopic end of the telescopic shaft 401 shrinks and resets, and then the elastic clip 402 is inserted into the card slot A, thereby limiting the telescopic end of the telescopic shaft 401, so that the limit ring 403 no longer moves. At this time, the outer wall and the inner wall of the limit ring 403 are respectively in contact with the inner wall of the placement rack A202 and the outer wall of the placement rack B2021, thereby limiting the placement rack B2021, and the toggle plate 404 provides support for the bottom surface of the placement rack B2021 to prevent the universal shaft 204 from falling after losing the support of the positioning seat 206. Then the staff presses the two U-shaped frames 501 downwards, and the hemispherical grooves on the U-shaped frames 501 squeeze the adjacent elastic stop pins 502, and the elastic stop pins 502 shrink and slide under the force until the elastic stop pins 502 are separated from the hemispherical grooves of the U-shaped frames 501. At the same time, the U-shaped frames 501 drive the fixed ring 203 to drop downwards until the top of the fixed ring 203 is at the same level as the top surface of the placement rack B2021. At this time, the fixed ring 203 is no longer in contact with the Marshall specimen 100, and the Marshall specimen 100 is free from restrictions and can move. At this time, the four guide grooves B corners of the rotating ring 302 are in contact with the sliding shaft 702 inside.

[0029] Then, the staff member drives the sliding frame 301 to slide leftward again through the handle on the sliding frame 301, thereby causing the sleeve 205 to rotate clockwise. The sliding block of the positioning seat 206 slides along the horizontal plane of the guide groove A, the positioning seat 206 does not move, and the protruding shaft slides along the horizontal plane of the guide groove C, keeping the telescopic rod 801 at a stable height. The four guide grooves B of the rotating ring 302 respectively squeeze the sliding shafts 702 therein, and the four sliding shafts 702 slide closer to each other under the force, thereby causing the four push rods 703 to slide closer to each other. After the push rod 703 slides, it contacts and squeezes the corresponding extrusion block 704. Since the push block 605 cannot move at this time, the corresponding sliding rod 606 of the push block 605 cannot move. The extrusion block 704 slides horizontally under the force and squeezes the limit block 705. The limit block 705 slides upward under the force and snaps into several wedge-shaped grooves at the bottom of the push rod 207. Subsequently, the extrusion block 704 contacts and squeezes the special-shaped groove of the sliding rod 606. The sliding rod 606 slides along the corresponding rectangular frame under the force and squeezes several wedge-shaped grooves of the push rod 207 through the limit block 705, causing the push rod 207 to move synchronously. The elastic member B between the push rod 207 and the box body 101 is stretched under the force. After the push rod 207 moves, it contacts and pushes the outer wall of the Marshall specimen 100, causing the Marshall specimen 100 to move on the top surface of the placement rack B2021 until the sliding shaft 702 contacts one end of the guide groove B and the push rod 207 stops moving. During this process, the sliding rod 606 pushes the corresponding push block 605, increasing the squeezing force of several card slots B on the contact rod 602 corresponding to the push block 605 on the elastic wedge block 603. The elastic wedge block 603 slides and contracts continuously under the force until the contact rod 602 is completely reset, and the elastic member A releases and resets, thus completing the position adjustment of the Marshall specimen 100. At this time, the center of gravity of the Marshall specimen 100 coincides with the center of the placement rack B2021.

[0030] Then, the staff member drives the sliding frame 301 to slide rightward and reset through the handle on the sliding frame 301, thereby causing the rotating ring 302 to rotate counterclockwise and reset. The rotating ring 302 drives the adjacent four sliding shafts 702 to reset through the four guide grooves B thereon. The sliding shaft 702 drives the corresponding push rod 703 to reset. The push rod 703 no longer contacts the corresponding extrusion block 704. The extrusion block 704 no longer squeezes the limit block 705. The limit block 705 slides downward under the influence of its own weight and disengages from several wedge-shaped grooves of the corresponding push rod 207, and squeezes the extrusion block 704. The extrusion block 704 slides and resets under the force. The elastic member B contracts and drives the push rod 207 to reset. Subsequently, the sleeve 205 squeezes the sliding block of the positioning seat 206 through the guide groove A thereon, causing the positioning seat 206 to land and reset. The positioning seat 206 disengages from the universal shaft 204, and the sleeve 205 drives the protruding shaft to reset through the guide groove C thereon. The protruding shaft drives the telescopic end of the telescopic rod 801 to land and reset. Embodiment 2

[0031] like Figure 13 As shown, the detection mechanism includes a socket 901, the socket 901 is symmetrically fixed to the bottom of the inner wall of the box 101, the universal shaft 204 is plugged into the socket 901, and the front side of the outer wall of the socket 901 is fixed with a sensor A902 used in conjunction with the placement rack B2021.

[0032] like Figure 13 As shown, the detection mechanism also includes a sensor B1001. The outer wall of the socket 901 is symmetrically mounted with sensors B1001 used in conjunction with the placement rack B2021. The two sensors B1001 are respectively located on both sides of the corresponding sensor A902.

[0033] like Figure 13 As shown, the detection mechanism also includes a control panel 1101. The control panel 1101 is installed on the box cover 102. The control panel 1101 is electrically connected to the sensor A902 and the sensor B1001. The control panel 1101 is used to monitor the detection data of the sensor A902 and the sensor B1001.

[0034] After the position adjustment of the Marshall specimen 100 is completed, the staff will stick the Marshall specimen 100 on the placement rack B2021 with a strong glue according to the position of the Marshall specimen 100 at this time, and pull out the latch 2011 upwards to make the latch 2011 detach from the round hole of the placement rack A202, then take the placement rack A202 out of the card holder 201, and plug the universal shaft 204 into the socket 901. At this time, the bottom surface of the placement rack B2021 is in contact with the sensor A902 and the two sensors B1001, and the angle of the box 101 is adjusted to make the box 101 in an inclined state, so that the two placement racks B2021 and the Marshall specimens 100 thereon are in an inclined state (box The angle adjustment of the box body 101 is prior art and will not be described in detail here), and then the heating element is started to generate high temperature in the box body 101 to bake the Marshall specimen 100 (the heating element is prior art and will not be described in detail here). Since the center of gravity of the Marshall specimen 100 coincides with the center of the circle of the placement rack B2021 at this time, the Marshall specimen 100 will flow after being baked at high temperature, causing the center of gravity of the Marshall specimen 100 to tilt forward. When the holes inside the Marshall specimen 100 collapse, the center of gravity of the Marshall specimen 100 will deflect to one side. At this time, the sensor A902 and the two sensors B1001 can accurately detect the change in the center of gravity of the Marshall specimen 100, thereby completing the slope test.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A temperature-controlled non-contact asphalt concrete slope test device, comprising a base (1), a box (101) hingedly connected to the base (1), and a box cover (102) hingedly connected to the box (101), characterized in that: The invention also comprises a limiting mechanism, which comprises a card seat (201), the card seat (201) is symmetrically fixedly connected to the rear side of the inner wall of the box body (101), a latch (2011) is inserted through the card seat (201), a placement rack A (202) is inserted in the card seat (201), a circular hole for use with the latch (2011) is symmetrically opened through the placement rack A (202), a placement rack B (2021) is arranged inside the placement rack A (202), a fixing ring (203) is embedded and slidably connected inside the placement rack B (2021), and the placement rack A (2021) is provided with a fixing ring (203) in a sliding manner. The bottom of the rack B (2021) is hinged with a universal shaft (204), the bottom of the inner wall of the box body (101) is symmetrically rotatably connected with a sleeve (205), a positioning seat (206) is movably connected inside the sleeve (205), the top of the positioning seat (206) is provided with a countersunk hole for use with the universal shaft (204), the bottom end of the universal shaft (204) is inserted into the countersunk hole, and an adjustment mechanism is also included, the adjustment mechanism includes a push rod (207), a plurality of evenly distributed push rods (207) are arranged on the outer side of the rack A (202), and a detection mechanism is also included.

2. A temperature-controlled non-contact asphalt concrete slope test device according to claim 1, characterized in that: The limiting mechanism also includes a sliding frame (301), the sliding frame (301) is slidably connected to the bottom of the inner wall of the box body (101), and is symmetrically rotatably connected to a rotating ring (302), the top of the rotating ring (302) is fixedly connected to a convex shaft, the convex shaft is clamped into the sliding frame (301) and slides therein, a connecting rod (303) is fixedly connected between the inner wall of the rotating ring (302) and the outer wall of the sleeve (205), the inner wall of the sleeve (205) is provided with two guide grooves A, the outer wall of the positioning seat (206) is symmetrically fixedly connected with a sliding block used in conjunction with the guide grooves A, the bottom of the positioning seat (206) is symmetrically provided with vertical grooves, the vertical grooves are slidably connected with a guide column (304), and the guide column (304) is fixedly connected to the bottom of the inner wall of the box body (101).

3. A temperature-controlled non-contact asphalt concrete slope test device according to claim 2, characterized in that: The limiting mechanism also includes a telescopic shaft (401), the telescopic shaft (401) is symmetrically slidably connected inside the placement rack A (202), a slot A is provided on the outer wall of the telescopic end of the telescopic shaft (401), an elastic clip (402) used in conjunction with the slot A is symmetrically fixed inside the placement rack A (202), a limiting ring (403) is fixed to the telescopic end of the telescopic shaft (401), the limiting ring (403) is used in conjunction with the placement rack A (202) and the placement rack B (2021), and a toggle plate (404) used in conjunction with the placement rack A (202) and the placement rack B (2021) is symmetrically fixed to the bottom of the limiting ring (403).

4. A temperature-controlled non-contact asphalt concrete slope test device according to claim 3, characterized in that: The limiting mechanism also includes a U-shaped frame (501), the U-shaped frame (501) is symmetrically connected to the placement frame B (2021) in a sliding manner, the bottom end of the fixing ring (203) is fixedly connected to the U-shaped frame (501), the placement frame B (2021) is symmetrically connected to an elastic limiting pin (502) in a sliding manner, and a hemispherical groove for use with the elastic limiting pin (502) is provided on one side of the U-shaped frame (501).

5. A temperature-controlled non-contact asphalt concrete slope test device according to claim 4, characterized in that: The adjustment mechanism also includes a guide frame (601), a plurality of evenly distributed guide frames (601) are arranged at the bottom of the placement frame B (2021), the bottom ends of the plurality of guide frames (601) are fixedly connected to the box body (101), a contact rod (602) is slidably connected inside the plurality of guide frames (601), an elastic member A is arranged between the top end of the contact rod (602) and the guide frame (601), a ball bearing used in conjunction with the placement frame B (2021) is rollingly connected to the top end of the contact rod (602), and a plurality of evenly distributed guide rods (602) are opened on one side of the contact rod (602). A slot B is formed in the plurality of guide frames (601), each of which is slidably connected to a plurality of elastic wedge blocks (603) used in conjunction with the slot B; a connecting rod (604) is hingedly connected to the bottom end of the contact rod (602), and a push block (605) is hingedly connected to one end of the connecting rod (604); a plurality of evenly distributed rectangular frames are arranged at the bottom of the placement frame B (2021), each of the plurality of rectangular frames is fixedly connected to the bottom of the inner wall of the box body (101), the push block (605) is inserted into the rectangular frame and slides therein, and a sliding rod (606) used in conjunction with the push block (605) is slidably connected to each of the plurality of rectangular frames.

6. A temperature-controlled non-contact asphalt concrete slope test device according to claim 5, characterized in that: The adjustment mechanism further comprises a guide rail (701), the bottom of each of the plurality of push rods (207) is provided with a guide rail (701), the bottom ends of each of the plurality of guide rails (701) are fixedly connected to the bottom of the inner wall of the box body (101), the top of the rotating ring (302) is provided with a plurality of evenly distributed guide grooves B, each of the plurality of guide grooves B is slidably connected with a sliding shaft (702), the top end of the sliding shaft (702) slidably passes through the guide rail (701) and is fixedly connected to a push rod (703) ), a special-shaped groove is formed through one side of the sliding rod (606), and an extrusion block (704) and a limit block (705) that cooperate with each other are slidably connected in the special-shaped groove, and the push rod (703) is used in cooperation with the extrusion block (704), and a plurality of wedge-shaped grooves that cooperate with the limit block (705) are formed at the bottom of a plurality of the push rods (207), and an elastic member B is provided between a plurality of the push rods (207) and the bottom of the inner wall of the box body (101).

7. A temperature-controlled non-contact asphalt concrete slope test device according to claim 6, characterized in that: The adjustment mechanism also includes a telescopic rod (801), the telescopic rod (801) is symmetrically arranged on the outer side of the sleeve (205), the fixed end of the telescopic rod (801) is fixedly connected to the bottom of the inner wall of the box body (101), the telescopic end of the telescopic rod (801) is used in conjunction with the placement rack B (2021), a vertical groove is penetrated through the outer wall of the fixed end of the telescopic rod (801), a protruding shaft is fixedly connected to the outer wall of the telescopic end of the telescopic rod (801), the protruding shaft is inserted into the vertical groove and slides therein, and the outer wall of the fixed ring (203) is provided with two guide grooves C used in conjunction with the protruding shaft.

8. A temperature-controlled non-contact asphalt concrete slope test device according to claim 7, characterized in that: The detection mechanism comprises a socket (901), the socket (901) is symmetrically fixed to the bottom of the inner wall of the box body (101), the universal shaft (204) is plugged into the socket (901), and the outer wall of the socket (901) is fixed to a sensor A (902) used in conjunction with the placement rack B (2021).

9. A temperature-controlled non-contact asphalt concrete slope test device according to claim 8, characterized in that: The detection mechanism also includes a sensor B (1001), and the outer wall of the socket (901) is symmetrically mounted with the sensor B (1001) for use with the placement rack B (2021).

10. A temperature-controlled non-contact asphalt concrete slope test device according to claim 9, characterized in that: The detection mechanism also includes a control panel (1101), the control panel (1101) being mounted on the box cover (102), and the control panel (1101) being electrically connected to the sensor A (902) and the sensor B (1001).

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