A highway concrete performance detection device and detection method

Abstract

The application discloses a highway concrete performance detection device and detection method, and relates to the technical field of concrete detection.The device comprises a support assembly, a limiting assembly, a moving assembly and a connecting assembly.The support assembly comprises a carrier plate.The limiting assembly comprises a support column, which is arranged on the carrier plate.The moving assembly comprises a cross beam, which is in sliding connection with the support column.The connecting assembly comprises a rotating rod, one end of which is connected with the cross beam, and the other end of which is connected with a slump bucket.The slump bucket is divided into multiple sealed designs, each layer can be individually lifted by a small distance, and the same sleeve structure is adopted between the two sets of barrels, so that the two sets of barrels have the same frictional resistance, which is beneficial to gradually offsetting the cement mortar viscous force of the barrel wall when the slump bucket is lifted, the sleeve can also be individually rotated to smooth the concrete surface, improve the shape of the demolded concrete, and improve the accuracy of the concrete slump experiment.

Description

Technical Field

[0001] This invention relates to the field of concrete testing technology, and in particular to a test device and method for testing the performance of highway concrete. Background Technology

[0002] The steps for testing the slump of concrete are as follows: 1. Wet the slump cone and its base plate, ensuring there is no standing water on the inner wall of the slump cone and the base plate. The base plate should be placed on a firm (non-absorbent) horizontal surface, with the cone placed in the center of the base plate. Then, step on the foot pedals on both sides. The slump cone should be kept in a fixed position during the filling process.

[0003] Two concrete samples, obtained as required, are evenly placed into the cylinder in three layers using a small shovel, ensuring that each layer, after compaction, is approximately one-third the height of the cylinder. Each layer is then tamped down multiple times with a tamping rod.

[0004] 3. After smoothing the top of the slump cone with a small shovel and removing the concrete from the bottom plate of the cone, lift the slump cone vertically and evenly. The lifting process of the slump cone should be completed within 5-10 seconds; the entire process from the start of loading to lifting the slump cone should be carried out without interruption and should be completed within 150 seconds.

[0005] 4. After lifting the slump cone, measure the height difference between the height of the cone and the highest point of the slumped concrete specimen. This difference is the slump value of the concrete mixture.

[0006] 5. Observe the cohesiveness and water retention of the collapsed concrete specimens.

[0007] There are many factors that affect the slump test of concrete. For example, during the lifting process of the slump cone, the concrete slurry adheres to the inner wall of the slump cone, which can easily cause the concrete to deform during the lifting process. The larger the contact area between the inner wall of the slump cone and the concrete, the greater the adhesion force. The more water the concrete contains, the greater the adhesion force. In this case, the concrete is more likely to be peeled off or even broken, which affects the accuracy of the concrete slump test. Summary of the Invention

[0008] In view of the problem of adhesion between the inner wall of the slump cone and the concrete slurry in the above and / or prior art, the present invention is proposed. One of the objectives of the present invention is to provide a slump cone with multi-layer locking, wherein the slump cone is lifted in multiple steps to counteract the adhesion between the inner wall of the slump cone and the concrete slurry, thereby better ensuring the integrity of the concrete and improving the accuracy of the experiment.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a support assembly, the support assembly including a carrier plate;

[0010] A limiting component includes a support column, which is disposed on a carrier plate;

[0011] A movable component includes a crossbeam that is slidably connected to a support column;

[0012] The connecting assembly includes a rotating rod, one end of which is connected to a crossbeam, and the other end of which is connected to a collapsing bucket.

[0013] In a preferred embodiment of the highway concrete performance testing device of the present invention, a load-bearing plate is provided at the bottom of the carrier plate.

[0014] In a preferred embodiment of the highway concrete performance testing device of the present invention, the top of the first and second sets of buckets is provided with a slot.

[0015] In a preferred embodiment of the highway concrete performance testing device of the present invention, the bottom of the second and third sets of buckets is provided with a retaining ring, the bottom of the retaining ring is provided with a sliding ring, the sliding ring is in contact with the retaining groove, and the cross-section of the sliding ring is circular.

[0016] As a preferred embodiment of the highway concrete performance testing device of the present invention, the first and second sets of buckets are provided with mounting grooves on their outer surfaces near the top.

[0017] In a preferred embodiment of the highway concrete performance testing device of the present invention, the top of the third set of buckets is provided with a hopper, and the hopper and the third set of buckets are integrally formed.

[0018] In a preferred embodiment of the highway concrete performance testing device of the present invention, the locking component is disposed in the mounting groove, and the locking component includes a locking bar, a threaded sleeve, a threaded rod, and a rotating handle.

[0019] In a preferred embodiment of the highway concrete performance testing device of the present invention, the locking bar is disposed in the mounting groove and can be slidably connected to the mounting groove; the outer end of the locking bar is sleeved with one end of the screw rod; the other end of the screw rod is provided with a rotating handle; the screw rod is sleeved with a screw sleeve, which is disposed on the outer surface of the slump bucket.

[0020] Another object of the present invention is to provide a method for detecting the slump of highway concrete, comprising the following steps;

[0021] Step 1, Cleaning: Clean the impurities on the surface of the carrier plate by lifting the slump bucket, and then bring the bottom of the slump bucket into contact with the surface of the carrier plate.

[0022] Step 2, Feeding: Feed the concrete into the slump bucket in three batches through the hopper. After each feeding, insert a tamping rod into the slump bucket to shake it. After the concrete is compacted, smooth the concrete at the top of the slump bucket.

[0023] Step 3, Smooth the sides: Rotate the third set of buckets one full turn from top to bottom, then rotate the second set of buckets one full turn, and finally rotate the first set of buckets one full turn.

[0024] Step 4, Separation: Lift the slump bucket by raising the rotating rod, and keep the slump bucket vertically upward and separate it from the concrete according to the upper limit of the crossbeam and support column in the vertical direction;

[0025] Step 5: Measurement: Measure the height difference between the height of the slump bucket and the highest point of the concrete after slumping to obtain the concrete slump value.

[0026] The beneficial effects of this invention are as follows: the crossbeam is slidably connected to the support column, the crossbeam is connected to the slump bucket through the rotating rod, and the crossbeam is installed perpendicularly to the carrier plate used for concrete slumping. When the slump bucket is lifted away, it is kept vertical and rises with the carrier plate, thus achieving the effect that the slump bucket does not collide with the concrete when it is lifted away.

[0027] The slump bucket consists of a first bucket, a second bucket, and a third bucket. Between lifting the slump buckets, the first bucket, the second bucket, and the third bucket are rotated one revolution in sequence to smooth the concrete surface. This also reduces the adhesion between the concrete and the inner wall of the bucket, making it more stable during the lifting process and thus ensuring the integrity of the concrete.

[0028] The first, second, and third slump buckets are connected by the same slots and matching slip rings. When they move upward, they have the same frictional resistance. As the slump bucket is lifted, the first, second, and third buckets are pulled up sequentially and continuously by a certain distance. The sleeves are gradually lifted by dividing the contact area between the inner wall of the bucket and the concrete, thereby reducing the overall lifting viscosity. Theoretically, the more buckets there are, the less the viscosity between the bucket wall and the concrete will affect the concrete. Compared with a one-piece slump bucket, a multi-sleeve slump bucket, which is lifted in stages, can better ensure the integrity of the concrete. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0030] Figure 1 This is a perspective view of the entire invention.

[0031] Figure 2 This is a perspective view of the support component, connecting component, moving component, and limiting component of the present invention.

[0032] Figure 3 This is a perspective view of the collapse bucket of the present invention.

[0033] Figure 4 This is an exploded view of the collapse bucket of the present invention.

[0034] Figure 5 This is a perspective view of the first sleeve assembly lock component of the present invention.

[0035] Figure 6 This is a perspective view of the first sleeve of the present invention.

[0036] Figure 7 This is a perspective view of the second sleeve assembly lock component of the present invention.

[0037] Figure 8 This is a perspective view of the second sleeve of the present invention.

[0038] Figure 9 This is a perspective view of the third sleeve of the present invention.

[0039] Figure 10 This is a schematic diagram showing the retaining ring and slip ring of the present invention respectively installed on the first and second sleeves.

[0040] Figure 11 This is a perspective view of the locking component of the present invention.

[0041] Figure 12 This is a schematic diagram of the structure of the locking component of the present invention.

[0042] Figure 13 This is a cross-sectional view of the present invention.

[0043] Figure 14 For the present invention Figure 13 A partial schematic diagram.

[0044] Figure 15 For the present invention Figure 2 Top view.

[0045] Figure 16 This is a perspective view of the limiting component of the present invention.

[0046] Figure 17 This is a schematic diagram of the limiting component and the moving component of the present invention.

[0047] Figure 18 This is a structural diagram of the internal structure of the collapsing bucket rotation limiting component of the present invention.

[0048] Figure 19 This is a schematic diagram of the rotating collapse bucket of the present invention.

[0049] Figure 20 This is a structural diagram of the internal structure of the handheld spring clip compression limiting component of the present invention.

[0050] Figure 21 This is a perspective view of the spring sheet on the connecting component of the present invention after being compressed.

[0051] Figure 22 This is a perspective view of the buffer component of the present invention.

[0052] Figure 23 This is a cross-sectional view of the buffer component of the present invention.

[0053] In the figure, there are support components 100, load-bearing plates 101, and carrier plates 102;

[0054] Collapse bucket 200, first set of buckets 201, second set of buckets 202, third set of buckets 203, hopper 204, locking piece 205, locking bar 205a, screw sleeve 205b, screw 205c, rotating handle 205c-1, slot 200a, mounting slot 200b, retaining ring 200c, slip ring 200d;

[0055] Connecting component 300, rotating rod 301, handheld spring 302, rocker 303, hinge 303a, stop block 303b, limiting ball 304, protrusion 304a;

[0056] Moving component 400, crossbeam 401, damping plate 401a, limiting plate 402, reset component 402a, notch 402b, narrow end 402c, sleeve rod 403, slider 403a;

[0057] Limiting component 500, support column 501, anti-slip groove 501a, slide bar 502, buffer component 503, first buffer block 503a, first slide groove 503a-1, second buffer block 503b, first slide bar 503b-1, second slide groove 503b-2, third buffer block 503c, second slide bar 503c-1, magnetic block 503c-2, clearance hole 503c-2a. Detailed Implementation

[0058] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0059] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0060] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0061] Example 1

[0062] Reference Figures 1 to 2 This is the first embodiment of the present invention. This embodiment provides a highway concrete performance testing device, which is used to support the concrete on the carrier plate 102 for slump test. In order to make the device more stable when performing slump test, a load-bearing plate 101 is installed at the bottom of the carrier plate 102 to increase the weight and lower the center of gravity of the device.

[0063] The slump bucket 200 is used to fill the concrete to be tested, and the hopper 202 facilitates the introduction of the concrete to be tested into the slump bucket 200.

[0064] The movable component 400 is disposed on the limiting component 500 and is able to slide on the limiting component 500;

[0065] The limiting component 500 is disposed on the upper surface of the carrier plate 102. The bottom of the limiting component 500 is installed perpendicular to the upper surface of the carrier plate 102. The moving component 400 is connected to the collapse bucket 200 through the connecting component 300. The moving component 400 can slide in the vertical direction of the limiting component 500.

[0066] After the concrete is compacted in the slump bucket 200 and the top of the concrete is smoothed, the compacted concrete needs to be separated from the slump bucket 200. This is done by installing the limiting component 500 vertically to the carrier plate 102. The moving component 400 slides in the vertical direction of the limiting component 500. The moving component 400 is used to support the slump bucket 200 and allows the slump bucket 200 to rise vertically when it is lifted.

[0067] Furthermore, after the slump bucket 200 separates from the concrete column, if the concrete to be tested has a high water content, the concrete slurry adhering inside the slump bucket 200 will, after a period of time (the dripping time of the concrete slurry depends on its viscosity; the thinner the slurry, the faster it drips, and vice versa), drip onto the surface of the concrete column to be tested, or fall onto the area of ​​the concrete column that is about to collapse. If the amount of dripping concrete slurry is large, it will affect the accuracy of the concrete slump test. Figure 1 , Figure 3 As shown, the crossbeam 401 is slidably disposed between the two support columns 501. The middle part of the crossbeam 401 is sleeved with one end of the connecting component 300, and the other end of the connecting component 300 is connected to the slump bucket 200. After the slump bucket 200 is lifted, by rotating the slump bucket 200 to be level with the carrier plate 102, a large amount of slurry adhering to the inner wall of the slump bucket 200 can be prevented from falling off, thereby increasing the accuracy of the concrete slump.

[0068] Example 2

[0069] Reference Figure 2 , Figures 13-23This is the second embodiment of the present invention, which differs from the first embodiment in that: in the previous embodiment, the crossbeam 401 is slidably disposed between the two support columns 501. The crossbeam 401 not only allows the collapse bucket 200 to slide vertically up and down, but also allows the collapse bucket 200 to rotate and be level with the carrier plate 102 through the connecting component 300, and keeps the collapse bucket 200 stable, and can ensure its stability before the collapse bucket 200 rotates.

[0070] Specifically, such as Figure 2 , Figure 13 , Figure 16 , Figure 17 As shown, the limiting piece 402 and the narrow end 402c are integrally formed structures, and both the limiting piece 402 and the narrow end 402c can slide inside the crossbeam 401. A sleeve rod 403 is provided at the narrow end 402c, and a slider 403a is fixedly installed on the sleeve rod 403. The slider 403a is sleeved with the slide rod 502 on the support column 501, so that the crossbeam 401 can slide up and down between the two support columns 501.

[0071] The connecting assembly 300 consists of two main parts: a rotating rod 301 and a limiting ball 304. One end of the rotating rod 301 is connected to the collapse bucket 200, and the limiting ball 304 passes through the crossbeam 401 and engages with the notch 402b on the limiting plate 402. The connecting assembly 300 connects the collapse bucket 200 and the crossbeam 401, so that the collapse bucket 200 can move up and down when the crossbeam 401 moves up and down.

[0072] Furthermore, such as Figure 19 , Figure 20 As shown, by setting a reset piece 402a inside the crossbeam 401 and sleeve the reset piece 402a on the outer surface of the narrow end 402c, and setting a damping plate 401a at the narrow end 402c, when the collapse bucket 200 is rotated, the limiting ball 304 at one end of the rotating rod 301 and the notch 402b on the limiting plate 402 are misaligned when the collapse bucket 200 rotates, and the collapse bucket 200 is level with the carrier plate 102. At this time, the limiting ball 304 rotates 90° and gets stuck between the two limiting plates 402, keeping the collapse bucket 200 stable after rotating 90°.

[0073] After the slumping bucket 200 rotates 90°, a large amount of concrete slurry that adheres to the inner wall of the slumping bucket 200 falls onto the surface of the concrete column, and concrete falls onto the carrier plate 102, thus preventing the concrete column from collapsing normally on the carrier plate 102.

[0074] When the limiting plate 402 moves outward, the damping plate 401a comes into contact with the damping groove 501a. The frictional resistance generated by the compression between the two causes the crossbeam 401 to be locked on the support column 501. When the collapse bucket 200 is rotated back to its original position, the damping plate 401a and the damping groove 501a come into contact and separate, and there is no contact between them and no frictional resistance.

[0075] Once the slump bucket 200 is moved to be completely separated from the concrete column, rotating the slump bucket 200 will fix it on the support column 501.

[0076] It is worth mentioning that, since rotating the slump bucket 200 is necessary to keep it fixed at a certain height, surveyors often overlook the problem of concrete falling from the inner wall of the slump bucket 200 after fixing it. The steps of locking the slump bucket 200 and then rotating it to disassemble it are even more easily forgotten. The fact that the slump bucket 200 must be rotated before it can be locked securely can effectively prevent operators from forgetting the steps.

[0077] Furthermore, the connecting component 300 includes a rotating rod 301 and a limiting ball 304 connected to the rotating rod 301. A handheld spring 302 is provided on the rotating rod 301. One end of the handheld spring 302 is integrally formed with the rotating rod 301, and the other end of the handheld spring 302 overlaps with one end of the rocker 303. One end of the rocker 303 is located inside the other end of the handheld spring 302, and one end of the rocker 303 is wrapped by the other end of the handheld spring 302. A hinge ring 303a is installed at the connection between the rotating rod 301 and the limiting ball 304. The rocker 303 is set on the limiting ball 304 through the hinge ring 303a. A stop block 303b is provided at the other end of the limiting ball 304. The stop block 303b overlaps with the slider 403a. The slider 403a is set inside the limiting ball 304, and the slider 403a is slidably connected to the limiting ball 304.

[0078] When lifting the collapsed bucket 200, hold the lever 301, as follows: Figure 16 The part of the rotating rod 301 that contacts the hand contacts the hand spring 302. At the same time, the hand spring 302 is located near the bottom of the rotating rod 301. When a person holds the rotating rod 301, it will inevitably contact the hand spring 302, causing it to deform slightly. After the hand spring 302 is deformed, it drives the rocker 303 installed through the hinge ring 303a to rotate. The stop block 303b at the other end of the rocker 303 will deflect under the lever principle and push the protrusion 304a that it is connected to to move outward.

[0079] It is worth mentioning that when the pulling force of the hand is small, the outward movement of the protrusion 304a will cause the damping plate 401a to drive the limiting plate 402 to move outward. If the pulling force of the hand is less than the compressive potential energy of the reset piece 402a, the damping plate 401a will not contact the damping groove 501a. At this time, the protrusion 304a is more firmly stuck in the notch 402b of the limiting plate 402, which ensures that the collapsed bucket 200 is stably separated from the concrete column when it is lifted.

[0080] When the grip force is large, the pulling force of the hand is greater than the compressive potential energy of the reset component 402a. The damping plate 401a contacts the damping groove 501a. At this time, the collapse bucket 200 is more stable when it is lifted. Since the hand spring 302 is located near the bottom of the rotating rod 301, the greater the pulling force of the hand, the greater the squeezing force between the damping plate 401a and the damping groove 501a, and the greater the frictional resistance generated by the squeezing. The purpose is to prevent the operator from not accurately controlling the force when pulling the collapse bucket 200, which may lead to concrete damage or even more serious breakage.

[0081] Furthermore, such as Figure 2 , Figure 15 , Figure 22 , Figure 23 As shown, a buffer 503 is provided at the bottom of the support column 501. The buffer 503 includes a first buffer block 503a, a second buffer block 503b, and a third buffer block 503c. The second buffer block 503b is fitted inside the first buffer block 503a, and the third buffer block 503c is fitted inside the second buffer block 503b. A first groove 503a-1 is formed on the inner wall of the first buffer block 503a, and a first sliding bar that cooperates with the first groove 503a-1 is provided on the outer surface of the second buffer block 503b. 503b-1, the inner wall of the second buffer block 503b is provided with a second sliding groove 503b-2, the outer surface of the third buffer block 503c is provided with a second sliding bar 503c-1 that cooperates with the second sliding groove 503b-2, the top of the third buffer block 503c is provided with a magnetic block 503c-2, the magnetic block 503c-2 is provided with a clearance hole 503c-2a, the magnetic block 503c-2 is magnetically connected to the slider 403a, and the sliding rod 502 passes through the clearance hole 503c-2a on the magnetic block 503c-2;

[0082] When the collapse bucket 200 is on the carrier plate 102, the magnetic block 503c-2 at the top of the buffer 503 attracts the slider 403a. When the collapse bucket 200 is stretched by the rotating rod 301, the slider 403a moves the buffer 503 upward. Since the buffer 503 is the second buffer block 503b fitted inside the first buffer block 503a and the third buffer block 503c fitted inside the second buffer block 503b, the three buffer blocks are simultaneously subjected to force and stretched when stretched, which buffers the upward force of the collapse bucket 200.

[0083] When the collapse bucket 200 detaches from the carrier plate 102, when the stretched buffer 503 contacts the slider 403a again, the downward buffering effect of the collapse bucket 200 can still be achieved by the compression of the buffer 503.

[0084] It is worth mentioning that the fully stretched length of the buffer 503 should be greater than the height required for the slump bucket 200 to completely detach from the concrete column. When the bottom of the slump bucket 200 contacts the carrier plate 102, the buffer 503 is fully compressed, and the slider 403a and the magnetic block 503c-2 are magnetically attracted. When the slider 403a detaches from the magnetic block 503c-2, it exerts a large reaction force on the slump bucket 200. Only when the stretched length of the buffer 503 is long enough, and the slump bucket 200 is completely separated from the concrete column, will the reaction force when the slider 403a detaches from the magnetic block 503c-2 not affect the concrete column, thereby ensuring the integrity of the concrete column structure and improving the accuracy of the slump test.

[0085] Example 3

[0086] Reference Figure 1 , Figures 3-12 As shown, this is the third embodiment of the present invention. Unlike the first and second embodiments, the slump bucket 200 includes a first bucket 201, a second bucket 202, a third bucket 203, and a hopper 204 for guiding materials. The first bucket 201, the second bucket 202, and the third bucket 203 are nested together. The first bucket 201 is located at the bottom, the second bucket 202 is located between the first bucket 201 and the third bucket 203, and the hopper 204 is fixed on the third bucket 203. By gradually moving the first bucket 201, the second bucket 202, and the third bucket 203 simultaneously a certain distance when the slump bucket 200 is stretched, the situation of the concrete column breaking or being damaged during the stretching of the integral slump bucket is avoided.

[0087] Specifically, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the tops of the first set of buckets 201 and the second set of buckets 202 are provided with slots 200a, and the bottoms of the second set of buckets 202 and the third set of buckets 203 are provided with retaining rings 200c. A sliding ring 200d is provided on the retaining ring 200c, and the sliding ring 200d contacts the surface of the slot 200a. The slot 200a is parallel to the side of the collapse bucket 200. When the collapse bucket 200 is stretched, because the connection point between the connecting component 300 and the collapse bucket 200 is on the third set of buckets 203, when the third set of buckets 203 is pulled up, the first set of buckets 201... The second sleeve 202 will be in contact with the surface of the slip ring 200d and the slot 200a. The three sleeves will be subjected to the same resistance. At this time, the three sleeves will be stretched in sequence. When the collapse sleeve 200 is pulled up, the tensile force on the concrete column is divided into three parts and acts on the surface of the concrete in sequence. Theoretically, the more sleeves there are, the more the tensile force is divided. Thus, when the number of sleeves reaches a certain level, the tensile force on the concrete column can be effectively offset, thereby protecting the concrete column and ensuring that the concrete column is not stretched or broken even when subjected to large tensile force.

[0088] Furthermore, such as Figure 3 , Figure 4 As shown, the first set of barrels 201, the second set of barrels 202, and the third set of barrels 203 are all conical cylindrical in shape. The slip ring 200d is in contact with the surface of the groove 200a, as shown. Figure 9 , Figure 10 As shown, the bottom of the slip ring 200d is arc-shaped. After the cement inside the slump bucket 200 is compacted, the outer surface of the concrete can be smoothed in sequence by the first bucket 201, the second bucket 202, and the third bucket 203, which is more in line with the test standard of concrete slump test. When the slump bucket 200 is pulled up, it further prevents the concrete column from being pulled or broken.

[0089] Furthermore, such as Figure 5 ,like Figure 7 ,like Figure 11 ,like Figure 12 As shown, the first set of buckets 201 and the second set of buckets 202 have mounting grooves 200b on their outer sides near the top. A locking component 205 is provided on the mounting groove 200b. The locking component 205 includes a locking bar 205a, a screw sleeve 205b, a screw 205c, and a rotating handle 205c-1. The locking bar 205a is fitted inside the mounting groove 200b. The screw sleeve 205b is located at the outer end of the mounting groove 200b. One end of the screw 205c is fitted with the rotating handle 205c-1. The other end of the screw 205c is fitted onto the locking bar 205a. The screw 205c is threadedly connected to the screw sleeve 205b.

[0090] By rotating the handle 205c-1, the locking bar 205a can extend from the mounting groove 200b into the slot 200a, thus blocking the upward movement of the slip ring 200d. When the locking bar 205a extends outward from the slot 200a, it no longer blocks the upward movement of the slip ring 200d. At this time, the first set of barrels 201, the second set of barrels 202, and the third set of barrels 203 can be disassembled individually, facilitating the cleaning of the concrete inside the slot 200a.

[0091] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for testing the performance of highway concrete, characterized in that: include, Support assembly (100), the support assembly (100) includes a carrier plate (102); The limiting component (500) includes a support column (501) disposed on the carrier plate (102); The movable component (400) includes a crossbeam (401) which is slidably connected to a support column (501); The connecting assembly (300) includes a rotating rod (301), one end of which is connected to a crossbeam (401), and the other end of which is connected to a collapsing bucket (200); The collapse bucket (200) includes a first bucket (201), a second bucket (202), a third bucket (203), a hopper (204), and a locking device (205); The top of the first set of buckets (201) and the second set of buckets (202) are provided with slots (200a); The bottom of the second set of buckets (202) and the third set of buckets (203) is provided with a retaining ring (200c), and the bottom of the retaining ring (200c) is provided with a slip ring (200d). The slip ring (200d) is in contact with the retaining groove (200a), and the cross-section of the slip ring (200d) is circular.

2. The highway concrete performance testing device as described in claim 1, characterized in that: The bottom of the carrier plate (102) is provided with a load-bearing plate (101).

3. The highway concrete performance testing device as described in claim 1 or 2, characterized in that: The first set of barrels (201) and the second set of barrels (202) have mounting grooves (200b) on their outer surfaces near the top.

4. The highway concrete performance testing device as described in claim 3, characterized in that: The top of the third set of barrels (203) is provided with a hopper (204), and the hopper (204) and the third set of barrels (203) are integrally formed.

5. The highway concrete performance testing device as described in claim 4, characterized in that: The locking element (205) is disposed in the mounting groove (200b), and the locking element (205) includes a locking bar (205a), a screw sleeve (205b), a screw (205c) and a rotating handle (205c-1).

6. The highway concrete performance testing device as described in claim 5, characterized in that: The locking bar (205a) is set in the mounting groove (200b) and can be slidably connected in the mounting groove (200b). The outer end of the locking bar (205a) is sleeved with one end of the screw (205c). The other end of the screw (205c) is provided with a rotating handle (205c-1). The screw (205c) is sleeved with the screw sleeve (205b), and the screw sleeve (205b) is set on the outer surface of the collapse bucket (200).

7. A testing method based on the highway concrete performance testing device according to any one of claims 4-6, characterized in that: Includes the following steps; Step 1: Cleaning; clean the impurities on the surface of the carrier plate (102) by lifting the slump bucket (200), and then bring the bottom of the slump bucket (200) into contact with the surface of the carrier plate (102); Step 2, feeding: Feed the concrete into the slump bucket (200) in three batches through the hopper (204). After each feeding, insert a tamping rod into the slump bucket (200) to shake it. After the concrete is compacted, smooth the concrete at the top of the slump bucket (200). Step 3: Smooth the sides; Rotate the third set of buckets (203) one round from top to bottom, then rotate the second set of buckets (202) one round, and finally rotate the first set of buckets (201) one round. Step 4, Separation; Lift the slump bucket (200) by lifting the rotating rod (301), and keep the slump bucket (200) vertically upward and separate it from the concrete according to the upper limit of the crossbeam (401) and the support column (501) in the vertical direction; Step 5: Measurement; Measure the height difference between the height of the slump bucket (200) and the highest point of the concrete after slumping to obtain the concrete slump value.

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