Concrete slump test device and test method

Abstract

The invention provides a concrete slump testing device and a concrete slump testing method, and relates to the technical field of buildings. The testing device comprises a bottom plate, a slump cylinder and a funnel, the slump cylinder is placed at the top of the bottom plate, the funnel is arranged at the other end of the slump cylinder in a sleeving mode, and the testing device further comprises at least two positioning pieces which are installed at the top of the bottom plate in a sliding mode; the mounting frame is mounted at the top of the bottom plate; the lifting mechanism is mounted on the mounting frame; the two ends of the lifting handle are hinged to the outer side wall of the slump cylinder; the measuring mechanism is mounted on the mounting frame; the ramming mechanism is mounted on the mounting frame, and the movable end of the ramming mechanism faces the bottom plate; and the controller is electrically connected with the positioning piece, the lifting mechanism, the measuring mechanism and the material ramming mechanism. The test device is designed to be automatic, the labor intensity of operators is greatly reduced, and measurement data can be automatically stored. The invention also discloses a concrete slump test method performed by the concrete slump test device.

Description

Technical Field

[0001] The present invention relates to the field of construction technology, and in particular to a concrete slump test device and a test method. Background Art

[0002] The slump test is an architectural test experiment with a nominal maximum particle size less than or equal to 31.5 mm and a slump of not less than 10 mm.

[0003] Specific steps of the slump test:

[0004] (1) First, moisten the slump cone, shovel, mixing board and other tools with a wet cloth. The slump cone has an upper diameter of 100 mm, a lower diameter of 200 mm, and a height of 300 mm, and is in a trumpet shape.

[0005] (2) Weigh the materials according to the mix ratio: First, weigh the cement and sand and pour them into the hopper and stir evenly, then weigh the stones and mix them together. Pour in half of the required water, stir carefully until evenly mixed, then pour in the remaining water and continue to stir until evenly mixed. The mixing time is about 4 - 5 MIN.

[0006] (3) Place the slump cone on a non - absorbent rigid flat plate, place the funnel on the slump cone, step on the pedal, and load the mixture into the cylinder in three layers, with the height of each layer approximately one - third of the cylinder height. Use a tamper to insert and tamp 25 times along a spiral line from the edge to the center of each layer without impact. Each insertion and tamping should be evenly distributed on the interface. When inserting and tamping the concrete at the edge of the cylinder, the tamper can be slightly inclined. When tamping the bottom layer, the tamper should penetrate the entire depth. When tamping the other two layers, it should penetrate this layer and insert into the lower layer by about 20 mm - 30 mm.

[0007] (4) After the filling is completed, use a trowel to scrape off the excess mixture, level the top of the cylinder, and remove the concrete around the bottom of the cylinder. Immediately lift the slump cone, and the lifting should be completed within 5 - 10 s, and the concrete should not be affected by lateral and torsional forces. The entire process from the start of loading to the removal of the slump cone should be completed within 150 s.

[0008] (5) Place the slump cone beside the conical concrete specimen, place a straight ruler horizontally on the top of the cone facing the mixture, and use a steel ruler to measure the vertical distance from the bottom surface of the straight ruler to the highest point of the specimen, which is the slump of the concrete mixture, accurate to 1 mm, and the result is corrected to the nearest 5 mm. When one side of the concrete specimen collapses or one - side shear failure occurs, the sample should be re - taken and measured again. If the above - mentioned situation still occurs for the second time, it means that the workability of the concrete is not good and it should be recorded.

[0009] (6) When the slump of the concrete mixture is greater than 220 mm, use a steel ruler to measure the final maximum diameter and minimum diameter after the concrete spreads. Under the condition that the difference between these two diameters is less than 50 mm, use their arithmetic mean as the slump spread value. Otherwise, this test is invalid. The slump spread is accurate to 1 mm, and the result is rounded to the nearest 5 mm.

[0010] During the slump test, the slump cone is fixed by the operator stepping on it with feet, and after the filling is completed, the operator lifts the bucket. During the bucket lifting process, the test may fail due to the operator's mistake, and the operator needs to perform the test manually, which is not conducive to batch testing. Summary of the Invention

[0011] To solve the above technical problems, the present invention provides a concrete slump test device, which is designed to be automated, greatly reducing the labor intensity of the operator and capable of automatically storing measurement data.

[0012] The technical solution adopted by the present invention is as follows:

[0013] A concrete slump test device includes a bottom plate, a slump cone, and a funnel. The slump cone is placed on the top of the bottom plate, and the funnel is sleeved on the other end of the slump cone. The test device further includes:

[0014] At least two positioning members, slidably installed on the top of the bottom plate. After the two positioning members are installed, they can slide relative to each other and slide away from each other. The positioning members are used to fix the slump cone on the top of the bottom plate;

[0015] A mounting frame, installed on the top of the bottom plate;

[0016] A lifting mechanism, installed on the mounting frame;

[0017] A lifting handle, the two ends of which are hinged on the outer side wall of the slump cone and are hooked to the lifting mechanism when the slump cone needs to be lifted;

[0018] A measuring mechanism, installed on the mounting frame;

[0019] A ramming mechanism, installed on the mounting frame, and its movable end faces the bottom plate;

[0020] A controller, electrically connected to the positioning members, the lifting mechanism, the measuring mechanism, and the ramming mechanism.

[0021] Optionally, the positioning member includes:

[0022] A sliding seat, slidably installed on the top of the bottom plate;

[0023] A lifting positioning rod, installed on the sliding seat;

[0024] The pressing plate is installed at the end of the movable end of the lifting positioning rod.

[0025] Optionally, the mounting bracket includes:

[0026] The mounting rod is installed on one side of the top of the bottom plate;

[0027] The rotating motor is installed at one end of the top of the mounting rod;

[0028] The mounting plate is installed on the power output end of the rotating motor;

[0029] The slide rail is installed on the side of the mounting plate facing the bottom plate, and the lifting mechanism is slidably installed on the slide rail;

[0030] The driving mechanism, whose movable end is connected to the lifting mechanism, and the driving mechanism is installed on the mounting plate.

[0031] Optionally, the lifting mechanism includes:

[0032] The telescopic rod is vertically installed on the mounting bracket, and its movable end faces the bottom plate;

[0033] The connecting piece is detachably connected to the end of the movable end of the telescopic rod. A hook is provided at one end of the connecting piece facing the bottom plate, and the hook cooperates with the lifting handle.

[0034] Optionally, the lifting handle includes:

[0035] The welding piece is welded on the relative outer side walls of the slump cone;

[0036] The handle, and both ends of the handle are rotatably connected to the two welding pieces;

[0037] The pull ring is fixedly arranged on the handle, and the lifting mechanism cooperates with the pull ring;

[0038] Wherein, when the handle rotates to the top of the slump cone, the pull ring is located in the middle of the slump cone.

[0039] Optionally, the ramming mechanism includes:

[0040] The mounting seat is connected to the side wall of the mounting bracket;

[0041] The telescopic member is hinged to the mounting seat;

[0042] The fixed seat is installed at the end of the movable end of the telescopic member;

[0043] The ramming rod is slidably installed on the fixed seat.

[0044] Optionally, the test device further includes:

[0045] A trowel plate, mounted at the bottom of the fixed seat.

[0046] Optionally, the test device further includes:

[0047] A receiving plate, with a plurality of receiving plates provided on the bottom plate and arranged around the slump cone.

[0048] A concrete slump test method using the concrete slump test device as described above, comprising the following steps:

[0049] S1. Level the bottom plate and fix the slump cone on the bottom plate;

[0050] S2. Measure the height of the slump cone through the measuring mechanism, and then sleeved the funnel on the top of the slump cone;

[0051] S3. Add concrete into the slump cone through the funnel. The amount of the first addition of concrete is one-third of the height of the slump cone. Subsequently, perform 25 insertions through the ramming mechanism. Then, perform the second addition of concrete and the third addition of concrete. And the amount of each addition of concrete is one-third of the height of the slump cone. After each addition, 25 insertions are required. And after the third concrete insertion is completed, remove the funnel;

[0052] S4. Take out the ramming rod on the ramming mechanism, and then adjust the height of the ramming mechanism so that the trowel plate mounted on the fixed seat contacts the top of the slump cone to level the concrete at the top of the slump cone;

[0053] S5. Connect the lifting mechanism with the lifting handle, and then lift the slump cone under the action of the lifting mechanism;

[0054] S6. Then, the measuring mechanism measures the height between the highest point of the concrete and the bottom plate, and this height is the slump.

[0055] Compared with the prior art, the beneficial effects of the present invention are:

[0056] 1. The labor intensity of the operator can be greatly reduced through this test device.

[0057] 2. The data collected in each time process is recorded by the controller, which is convenient for subsequent reference.

[0058] 3. By conducting tests with the test device, the errors that occur during the operation of personnel can be avoided. Description of the Drawings

[0059] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0060] Figure 1 It is a schematic diagram of the overall structure of the concrete slump test device.

[0061] Figure 2 It is a schematic diagram of the top view structure of the concrete slump test device.

[0062] Figure 3 It is a schematic diagram of the structure of the ramming mechanism.

[0063] Figure 4 It is a schematic diagram of the structure of another embodiment of the mounting frame.

[0064] Figure 5 It is a schematic diagram of the structure of the cooperation between the slump cone and the receiving plate.

[0065] Figure 6 It is a schematic diagram of the structure of another embodiment of the concrete slump test device.

[0066] Figure 7 It is a schematic diagram of the partial structure of another embodiment of the concrete slump test device.

[0067] Reference numerals:

[0068] 1, bottom plate;

[0069] 2, slump cone;

[0070] 3, funnel;

[0071] 4, positioning member; 41, sliding seat; 42, lifting positioning rod; 43, pressing plate;

[0072] 5, mounting frame; 51, mounting rod; 52, rotating motor; 53, mounting plate; 54, slide rail; 55, driving mechanism; 56, side plate; 57, rotating rod; 58, limiting member; 59, rotating groove; 510, limiting opening;

[0073] 6, lifting mechanism; 61, telescopic rod; 62, connecting member; 63, hook;

[0074] 7, lifting handle; 71, welding part; 72, handle; 73, pull ring;

[0075] 8, measuring mechanism;

[0076] 9. Ramming mechanism; 91. Mounting base; 92. Telescopic member; 93. Fixed base; 94. Ramming rod; 95. Screeding plate;

[0077] 10. Controller;

[0078] 110. Material receiving plate. Detailed implementation manner

[0079] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0080] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of the present invention are usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0081] In the present invention, unless otherwise clearly specified and defined, the terms "mount", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0083] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0084] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0085] As Figure 1 and Figure 2 shown, an embodiment of the present invention provides a concrete slump test device, including a bottom plate 1, a slump cone 2, and a funnel 3. The slump cone 2 is placed on the top of the bottom plate 1, and the funnel 3 is sleeved on the other end of the slump cone 2. The test device further includes: at least two positioning members 4, a mounting frame 5, a lifting mechanism 6, a lifting handle 7, a measuring mechanism 8, a ramming mechanism 9, and a controller 10. The two positioning members 4 are slidably mounted on the top of the bottom plate 1. After the two positioning members 4 are mounted, they can slide relative to each other and away from each other. The positioning members 4 are used to fix the slump cone 2 on the top of the bottom plate 1. The mounting frame 5 is mounted on the top of the bottom plate 1. The lifting mechanism 6 is mounted on the mounting frame 5. Both ends of the lifting handle 7 are hinged to the outer side wall of the slump cone 2 and are connected to the lifting mechanism 6 when the slump cone 2 needs to be lifted. The measuring mechanism 8 is mounted on the mounting frame 5. The ramming mechanism 9 is mounted on the mounting frame 5, and its movable end faces the bottom plate 1. The controller 10 is electrically connected to the positioning members 4, the lifting mechanism 6, and the measuring mechanism 8.

[0086] During use, lay the bottom plate 1 flat, and then fix the slump cone 2 on the top of the bottom plate 1 through the positioning member 4. Then sleeved the funnel 3 on the top of the slump cone 2. Then pour concrete into the slump cone 2. When the concrete in the slump cone 2 reaches one-third of the height, rotate the ramming mechanism 9 so that the ramming mechanism 9 is located at the top of the slump cone 2. Then ram the concrete in the slump cone 2 through the ramming mechanism 9, and the number of ramming times is 25 times. Then pour concrete into the slump cone 2 again. When the concrete reaches two-thirds of the height of the slump cone 2, perform secondary ramming through the ramming mechanism 9. Then pour the remaining one-third of the concrete, and ram again after pouring. After ramming is completed, remove the funnel 3, and then level the concrete at the top of the slump cone 2. Adjust the lifting mechanism 6 to a suitable position, and hang the lifting mechanism 6 with the lifting handle 7. The lifting mechanism 6 moves to vertically lift the slump cone 2 upward within a specified time. After the slump cone 2 is lifted, measure the height of the concrete through the measuring mechanism 8, and the measured data is fed back to the controller 10 for recording.

[0087] It should be noted that the height of the slump cone 2 is measured in advance after being fixed for subsequent data retrieval. During the test, the total duration of pouring concrete, ramming, and lifting the slump cone 2 needs to be controlled within the standard range, and the slump cone 2 needs to be completely separated from the concrete between 5 seconds and 10 seconds.

[0088] The measuring mechanism is an existing design, such as an electronic height gauge, a laser ranging height gauge, an ultrasonic measuring instrument, etc.

[0089] In one of the embodiments, a slide rail 54 is provided on the top of the bottom plate 1, and the positioning member 4 is slidably mounted on the slide rail 54. And the positioning member 4 can be slid by an electric telescopic rod or a cylinder or manually.

[0090] In one of the embodiments, as Figure 1 shown, the positioning member 4 includes: a sliding seat 41, a lifting positioning rod 42, and a pressing plate 43. The sliding seat 41 is slidably mounted on the top of the bottom plate 1. The lifting positioning rod 42 is vertically mounted on the sliding seat 41. The pressing plate 43 is mounted at the end of the movable end of the lifting positioning rod 42.

[0091] First, after the sliding seat 41 slides in place, the lifting positioning rod 42 descends, driving the pressing plate 43 to descend. The pressing plate 43 abuts against the bottom side plate 56 of the slump cone 2 to fix the slump cone 2.

[0092] When the slump cone 2 needs to be lifted, the lifting positioning rod 42 rises and then slides relatively away, and the lifting mechanism 6 drives the slump cone 2 to rise.

[0093] In order to facilitate automatic control, in this embodiment, the sliding seat 41 is driven to move by an electric telescopic rod, and the controller 10 is electrically connected to the electric telescopic rod.

[0094] In one embodiment, as Figure 1 shown, the mounting bracket 5 includes: a mounting rod 51, a rotating motor 52, a mounting plate 53, a slide rail 54, and a driving mechanism 55. The mounting rod 51 is mounted at one end of the top of the bottom plate 1. The rotating motor 52 is mounted on the mounting rod 51 and is electrically connected to the controller 10. The mounting plate 53 is mounted on the power output end of the rotating motor 52. The slide rail 54 is mounted on the side of the mounting plate 53 facing the bottom plate 1, and the lifting mechanism is mounted on the slide rail 54. The driving mechanism 55 is mounted on the mounting plate 53, and the movable end of the driving mechanism 55 is connected to the lifting mechanism.

[0095] During use, when pouring concrete, the rotating motor 52 drives the mounting plate 53 to rotate to one side to avoid interference during the pouring process. When it is necessary to lift the slump cone 2, the rotating motor 52 drives the mounting plate 53 to rotate so that the mounting plate 53 is located directly above the slump cone 2. Then, the position of the lifting mechanism 6 is adjusted through the driving mechanism 55 so that the lifting mechanism 6 coincides with the top center of the slump cone 2. Then, the lifting mechanism 6 operates to vertically lift the slump cone 2.

[0096] In another embodiment, as Figure 4 shown, the mounting bracket 5 includes a vertically arranged side plate 56 and a mounting plate 53 rotatably arranged on the top of the side plate 56, and the lifting mechanism 6 is arranged at the bottom of the mounting plate 53. It should be noted that a rotating rod 57 is arranged at the top of the side plate 56, a rotating groove 59 is arranged at the top of the side plate 56, a limiting member 58 is arranged on the side wall of the rotating groove 59, and a fan-shaped limiting opening 510 is arranged on the side wall of the mounting plate 53.

[0097] In one embodiment, as Figure 1 shown, the lifting mechanism 6 includes: a telescopic rod 61 and a connecting member 62. The telescopic rod 61 is vertically mounted on the mounting bracket 5, and the movable end of the telescopic rod 61 faces the bottom plate 1. The connecting member 62 is detachably mounted at the end of the movable end of the telescopic rod 61. One end of the connecting member 62 facing the bottom plate 1 is provided with a hook 63, and the hook 63 cooperates with the lifting handle 7.

[0098] During use, the hook 63 arranged on the connecting member 62 is connected to the lifting handle 7, and then the controller 10 controls the telescopic rod 61 to contract to vertically lift the slump cone 2. During the lifting process, the controller 10 needs to control the contraction speed of the telescopic rod 61 to avoid being too fast or too slow and not meeting the test requirements.

[0099] It should be noted that the telescopic rod 61 is one of a linear motor, an electric telescopic rod, a cylinder, or a hydraulic cylinder.

[0100] In one embodiment, asFigure 1 and Figure 5 As shown in Figure 5 , the lifting handle 7 includes a welded part 71, a handle 72, and a pull ring 73. The welded parts 71 are welded on the opposite side walls of the slump cone 2. The two ends of the handle 72 are rotatably connected to the welded part 71. The pull ring 73 is welded to the middle of the handle 72, and the hook 63 of the lifting mechanism 6 is hooked to the pull ring 73.

[0101] During use, in order to prevent the slump cone 2 from tilting when lifting the slump cone 2, a pull ring 73 is provided in the middle of the handle 72. The pull ring 73 just matches the hook 63 and is located in the middle of the slump cone 2. During the lifting process, just keep lifting vertically upward.

[0102] In one embodiment, as Figure 1 and Figure 3 As shown in Figure 3 , the ramming mechanism 9 includes a mounting base 91, a telescopic member 92, a fixed base 93, and a ramming rod 94. The mounting base 91 is fixed to the side wall of the mounting frame 5 by screws. The telescopic member 92 is hinged to the mounting base 91, so that the telescopic member 92 can rotate in the horizontal plane along its hinge point. The fixed base 93 is installed at the end of the movable end of the telescopic member 92. The ramming rod 94 is slidably installed on the fixed base 93.

[0103] During use, rotate the telescopic member 92 to the top of the slump cone 2, then insert the ramming rod 94 into the fixed base 93, and then ram manually.

[0104] In another embodiment, a rotary motor is provided at the hinge between the mounting base 91 and the telescopic member 92. The rotary motor rotates under the control of the controller 10 to drive the telescopic member 92 to be above the slump cone 2. A driving member for driving the ramming rod 94 to move up and down is provided on the fixed base 93, and the driving member is electrically connected to the controller 10.

[0105] When ramming is required, the driving member is in the extended state, so that the ramming rod 94 is at the top of the slump cone 2. At this time, the controller 10 controls the rotary motor to rotate, driving the telescopic member 92 to be above the slump cone 2. At the same time, the telescopic member 92 (the telescopic member 92 is an electric telescopic member, a linear motor or other mechanisms that can achieve linear motion) drives the fixed base 93 provided on the movable end of the telescopic member 92 to be directly above the slump cone 2, and the controller 10 controls the driving member to drive the ramming rod 94 to ram the concrete. After the number of ramming times reaches the standard, it is reset under the control of the controller 10. It is convenient to realize the automatic ramming of this test device and reduce the labor intensity of the operator.

[0106] In one embodiment, as Figure 1 and Figure 4As shown, the test device further includes: a screed plate 95, which is installed at the bottom of the fixed seat 93. When screeding, rotate the telescopic rod 61. During the rotation process, the telescopic rod 61 drives the screed plate 95 to scrape off the excess concrete at the top of the slump cone 2. It should be noted that the installation height of the screed plate 95 matches the height of the slump cone 2.

[0107] In one embodiment, as Figure 2 and Figure 5 shown, the test device further includes: a receiving plate 110. There are multiple receiving plates 110, which are arranged on the bottom plate 1 and are arranged around the slump cone 2.

[0108] After the third pouring of concrete and the ramming is completed, the funnel 3 needs to be removed. After the funnel 3 is removed, part of the concrete will slide down along the slump cone 2. The screed plate 95 will also scrape off part of the concrete during the screeding process. In order to prevent the concrete from directly falling on the bottom plate 1, multiple receiving plates 110 are arranged around the slump cone 2, and the excess concrete will directly fall onto the receiving plates 110 after sliding down. Just remove the receiving plate 110 from around the slump cone 2 before lifting the slump cone 2.

[0109] In one embodiment, the test device further includes: a concrete metering pump, which quantitatively supplies concrete into the slump cone 2 through the concrete metering pump.

[0110] In another embodiment, as Figure 6 and Figure 7 shown, there are two mounting rods 51 of the mounting frame 5, and the mounting plate 53 is installed between the two mounting rods 51. Two lifting mechanisms 6 are fixedly arranged at the bottom of the mounting plate 52. There are two lifting handles 7 symmetrically arranged on the opposite outer side walls of the slump cone 2.

[0111] In this embodiment, both the slide rail and the drive mechanism can be omitted.

[0112] A method for testing the slump of concrete using the concrete slump test device as described above includes the following steps:

[0113] S1. Level the bottom plate 1 before the test, and then fix the slump cone 2 on the bottom plate 1 through the positioning member 4;

[0114] S2. After the slump cone 2 is fixed, measure the height of the slump cone 2 through the measuring mechanism 8, and then sleeved the funnel 3 on the top of the slump cone 2;

[0115] S3. Add concrete into the slump cone 2. The amount of the first concrete addition is one-third of the height of the slump cone 2. Subsequently, perform ramming 25 times through the ramming mechanism 9. Then, perform the second and third concrete additions. The amount of each concrete addition is one-third of the height of the slump cone 2. After each addition, ramming is required 25 times. After the third concrete ramming is completed, remove the funnel 3. When adding concrete, quantitative transportation can be carried out through a concrete metering pump to avoid over - addition or insufficient addition of concrete during the addition process.

[0116] S4. After the concrete ramming is completed, raise the ramming rod 94 of the ramming mechanism 9 to prevent the slump cone 2 from being toppled during the leveling process. Then, rotate the telescopic rod 61 of the ramming mechanism 9 so that the screed plate 95 installed on the fixed seat 93 levels the concrete at the top of the slump cone 2.

[0117] S5. The lifting mechanism 6 is connected to the lifting handle 7. Then, under the action of the lifting mechanism 6, lift the slump cone 2, and the lifting process needs to be completed within 5 seconds - 10 seconds.

[0118] S6. Then, the measuring mechanism 8 measures the height between the highest point of the concrete and the bottom plate 1, and this height is the slump.

[0119] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A concrete slump test device, comprising a base plate, a slump cone and a funnel, wherein the slump cone is placed on the top of the base plate, and the funnel is sleeved on the other end of the slump cone, characterized in that: The test device also includes: At least two positioning members are slidably mounted on the top of the bottom plate. After being mounted, the two positioning members can slide relative to each other and away from each other. The positioning members are used to fix the collapse cone on the top of the bottom plate. A mounting frame mounted on the top of the base plate; A lifting mechanism, mounted on the mounting frame; A lifting handle, both ends of which are hinged on the outer wall of the collapse cone and are connected to the lifting mechanism when the collapse cone needs to be lifted; A measuring mechanism, mounted on the mounting frame; A tamping mechanism is mounted on the mounting frame, with its movable end facing toward the bottom plate; The controller is electrically connected to the positioning member, the lifting mechanism and the measuring mechanism.

2. The concrete slump test device according to claim 1, characterized in that: The positioning member comprises: A sliding seat, slidably mounted on the top of the bottom plate; A lifting and positioning rod is installed on the sliding seat; A pressure plate is installed at the movable end of the lifting and positioning rod.

3. The concrete slump test device according to claim 1 or 2, characterized in that: The mounting frame comprises: A mounting rod mounted on one side of the top of the base plate; A rotating motor is mounted on one end of the top of the mounting rod; A mounting plate mounted on the power output end of the rotating motor; A slide rail is installed on a side of the mounting plate facing the bottom plate, and the lifting mechanism is slidably installed on the slide rail; A driving mechanism, a movable end of which is connected to the lifting mechanism, and the driving mechanism is installed on the mounting plate.

4. The concrete slump test device according to claim 1, characterized in that: The lifting mechanism comprises: A telescopic rod, vertically mounted on the mounting frame, with its movable end disposed toward the bottom plate; A connecting piece is detachably connected to the movable end of the telescopic rod, and a hook is provided at one end of the connecting piece facing the bottom plate, and the hook cooperates with the lifting handle.

5. The concrete slump test device according to claim 1, characterized in that: The lifting handle comprises: Welding parts, the welding parts are welded on the opposite outer side walls of the collapse cone; A handle, the two ends of which are rotatably connected to the two welding parts respectively; A pull ring, fixedly arranged on the handle, and the pulling mechanism cooperates with the pull ring; Wherein, when the handle is rotated to the top of the collapse cone, the pull ring is located in the middle of the collapse cone.

6. The concrete slump test device according to claim 1, characterized in that: The tamping mechanism comprises: A mounting seat connected to a side wall of the mounting frame; A telescopic member, hinged to the mounting seat; A fixed seat, mounted on the movable end of the telescopic member; The tamping rod is slidably mounted on the fixing seat.

7. The concrete slump test device according to claim 6, characterized in that: The test device further comprises: A trowel plate is mounted on the bottom of the fixing base.

8. The concrete slump test device according to claim 1, characterized in that: The test device further comprises: A receiving plate, which has a plurality of receiving plates, is arranged on the bottom plate and around the collapse cone.

9. A method for testing the slump of concrete using the concrete slump testing device according to any one of claims 1 to 8, characterized in that: The steps include: S1. Level the bottom plate and fix the collapse cone on the bottom plate; S2, measuring the height of the collapse cone by a measuring mechanism, and then placing a funnel on the top of the collapse cone; S3, adding concrete into the slump cone through the funnel, the amount of the first concrete addition is one-third of the height of the slump cone, then the tamping mechanism is used to insert and tamp 25 times, and then the second and third concrete additions are performed, and the amount of each concrete addition is one-third of the height of the slump cone, and the additions need to be inserted and tamp 25 times, and the funnel is removed after the third concrete insertion and tamping is completed; S4, taking out the tamping rod on the tamping mechanism, and then adjusting the height of the tamping mechanism so that the trowel plate installed on the fixed seat contacts the top of the slump cylinder, and smoothing the concrete on the top of the slump cylinder; S5, the lifting mechanism is connected to the lifting handle, and then the slump cone is lifted under the action of the lifting mechanism; S6. Then the measuring mechanism measures the height between the highest point of the concrete and the bottom plate, and this height is the slump.

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