A concrete fluidity detection device

Abstract

The utility model relates to a kind of concrete fluidity detection devices, belong to concrete technical field.The device includes bottom plate, top seat and servo motor;The top of the bottom plate is fixedly connected with stand, the end away from bottom plate of the stand is fixedly connected with connecting column, the top seat is fixedly connected in the side away from stand of connecting column, the top of the bottom plate is movably connected with slump cylinder, the servo motor is fixedly connected in the side away from connecting column of top seat.The utility model is driven by servo motor to drive shaft rotation, cooperate threaded sleeve, threaded rod and press plate, the compaction treatment of concrete in slump cylinder, by the reverse rotation of driving shaft and linkage shaft drive carousel, intermittent gear disc and ratchet disc, and then drive threaded screw rod drive lifting platform to ascend, make clamp jaw clamping and gradually promote slump cylinder, make the concrete in it smoothly flow out and form slump phenomenon, to realize the detection of concrete fluidity.

Description

Technical Field

[0001] This utility model relates to the field of concrete technology, and in particular to a concrete fluidity testing device. Background Technology

[0002] Concrete is a building material made by mixing cement, sand, gravel, and water in a certain proportion. It has high strength and good durability and is widely used in housing construction, road and bridge construction, and water conservancy projects. During construction, it not only needs to meet the requirements of structural strength, but also needs to have good workability. Among them, fluidity is an important indicator for measuring the workability of concrete, which is directly related to the density of pouring and the quality of molding. In order to accurately evaluate the fluidity of concrete, it is usually measured with specialized testing tools. Among them, concrete fluidity testing devices are widely used in engineering quality control and experimental testing.

[0003] Most existing concrete flowability testing devices are based on traditional slump cylinders. In actual use, staff often need to manually support the cylinder to keep it relatively stable during movement, which can easily cause the slump cylinder to tilt or sway. It is difficult to ensure that the cylinder can rise or fall vertically stably during testing. At the same time, in the testing process, concrete compaction usually relies on repeated manual tapping or pressurization, which affects the accuracy of the test results due to uneven force. In addition, lifting the cylinder to complete the slump process also requires manual assistance. The lack of a stable and reliable linkage transmission mechanism results in poor concrete slump performance during the testing process.

[0004] Therefore, this utility model proposes a concrete fluidity testing device. Utility Model Content

[0005] Therefore, in order to overcome the problems of existing concrete fluidity testing devices that rely heavily on manual operation, make it difficult for the slump cylinder to maintain stable vertical lifting and lowering during movement, and easily cause tilting and swaying, and rely on manual knocking or pressurization for concrete compaction, resulting in uneven force and affecting the accuracy of testing, as well as the need for manual assistance in lifting the cylinder and the lack of a stable linkage mechanism, the overall testing effect is not good.

[0006] The technical solution of this utility model is as follows: a concrete fluidity testing device, including a base plate, a top seat, and a servo motor; a column is fixedly connected to the top of the base plate, the columns are symmetrically installed near both sides of the base plate, a connecting column is fixedly connected to the end of the column away from the base plate, the top seat is fixedly connected to the side of the connecting column away from the column, a slump cylinder is movably connected to the top of the base plate, the slump cylinder is located near the center of the base plate, and the servo motor is fixedly connected to the side of the top seat away from the connecting column.

[0007] Preferably, the connecting column is located on the top of the base plate, the connecting column and the top seat are an integrated structure, and the servo motor is located near the center of the top seat.

[0008] Preferably, a tripod is fixedly connected to the side of the column, the tripod is symmetrically installed on both sides of the column, the end of the tripod away from the column is fixedly connected to the top of the base plate, and a reinforcing frame is fixedly connected to the inside of the column, the end of the reinforcing frame away from the column is fixedly connected to the side of the connecting column close to the column.

[0009] Preferably, a support is fixedly connected to the back of the connecting column, a ratchet disc is rotatably connected to the end of the support away from the connecting column, a threaded screw is fixedly connected to the bottom of the ratchet disc, an intermittent toothed disc is engaged at the top of the ratchet disc, and a turntable is provided at the top of the intermittent toothed disc.

[0010] Preferably, the turntable has a sliding connection of a limiting rod inside, which is symmetrically installed on both sides of the turntable. The end of the limiting rod away from the turntable is fixedly connected to the top of the intermittent gear plate. A return spring is sleeved on the outer side of the limiting rod. One end of the return spring is fixedly connected to the top of the intermittent gear plate, and the other end of the return spring is fixedly connected to the bottom of the turntable. A linkage shaft is fixedly connected to the inner side wall of the turntable. The linkage shaft is rotatably connected to the inside of the top seat. The intermittent gear plate is engaged with the outer side wall of the linkage shaft. A linkage gear is fixedly connected to the top of the linkage shaft, and the linkage gear is rotatably connected to the top of the top seat.

[0011] Preferably, the top seat is rotatably connected to a drive shaft, which is fixedly connected to the bottom of a servo motor. A threaded sleeve is fixedly connected to the end of the drive shaft away from the servo motor. The threaded sleeve is rotatably connected to the inside of a connecting column. A drive gear is fixedly connected to the outer wall of the drive shaft, and the drive gear meshes with the outer wall of a linkage gear. A threaded rod is threadedly connected to the inner wall of the threaded sleeve. A pressure plate is fixedly connected to the end of the threaded rod away from the threaded sleeve. The pressure plate is located at the top of the slump cylinder.

[0012] Preferably, a pull plate is fixedly connected to the outer wall of the slump cylinder, and the pull plate is symmetrically installed near the top of the slump cylinder. A clamp is provided on the outer side of the slump cylinder, and the clamp is symmetrically installed near the slump cylinder. A clamping pad is fixedly connected to the inner wall of the clamp, and the clamping pad is in close contact with the outer wall of the slump cylinder. A connecting rod is fixedly connected to the outer wall of the clamp, and a lifting platform is fixedly connected to the end of the connecting rod away from the clamp. The lifting platform is threadedly connected to the outer wall of the threaded screw. A guide rod is fixedly connected to the side of the connecting rod away from the clamp, and the guide rod is slidably connected to the inside of the column. A connecting platform is rotatably connected to the top of the base plate, and the connecting platform is fixedly connected to the end of the threaded screw away from the ratchet plate. A handle is fixedly connected to the outer wall of the connecting platform.

[0013] The beneficial effects of this utility model are: 1. During the testing process, the servo motor drives the drive shaft to rotate, which in turn drives the threaded sleeve to rotate. The threaded rod rotates and moves downward, thus pushing the pressure plate into the interior of the slump cylinder. The pressure plate gradually moves down along the inner wall of the slump cylinder and compacts the internal concrete. During this process, the drive shaft drives the linkage gear to rotate through the drive gear. The linkage shaft rotates accordingly, causing the turntable and the intermittent toothed disc to rotate synchronously. At this time, since the intermittent toothed disc rotates against the direction of the ratchet teeth of the ratchet disc, the two cannot mesh, causing the threaded screw to remain stationary and the lifting platform to remain in its original position. This completes the testing preparation and maintains the stability of the slump cylinder during the concrete compaction process. There is no need to manually support the cylinder, thus reducing labor intensity. 2. When the concrete in the slump cylinder is compressed, the servo motor drives the drive shaft and linkage shaft to rotate in opposite directions. The turntable and intermittent toothed disc rotate in opposite directions as well. The return spring pushes the intermittent toothed disc to always keep it close to the ratchet disc. The intermittent toothed disc moves along the ratchet teeth of the ratchet disc and meshes with it, thereby driving the ratchet disc to rotate. The threaded screw rotates accordingly, causing the lifting platform to move upward and driving the gripper to rise synchronously. With the cooperation of the clamping pad, the slump cylinder is clamped. The gripper pushes the pull plate, and the slump cylinder gradually moves upward away from the bottom plate. At this time, the concrete flows out of the slump cylinder and forms a slump phenomenon. Finally, the height of the concrete after slump is measured by the measuring ruler to complete the detection. Relying on the stable linkage transmission mechanism, the automatic lifting of the slump cylinder is realized without the need for manual operation. 3. When the slump cylinder needs to be reset, lift the intermittent toothed disc to disengage it from the ratchet disc and release the engagement limit. Then, turn the handle to drive the threaded screw through the connecting table to rotate, so that the lifting platform gradually descends, driving the gripper and slump cylinder back to the bottom plate, thereby completing the reset. This simplifies the reset process and ensures that the slump cylinder remains vertical and stable during the reset process. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The diagram shown is a top-view three-dimensional structural schematic of the present invention; Figure 2 The diagram shown is a three-dimensional structural schematic diagram of the present invention from a bottom view. Figure 3 The diagram shown is a three-dimensional cross-sectional view of the present invention. Figure 4 The diagram shown is a three-dimensional structural schematic of the column of this utility model; Figure 5 The diagram shown is a three-dimensional structural schematic of the connecting column of this utility model; Figure 6 This utility model is shown. Figure 5 Enlarged 3D structural diagram at point A; Figure 7 The diagram shown is a three-dimensional structural schematic of the top seat of this utility model; Figure 8 The diagram shown is a three-dimensional structural schematic of the slump cylinder of this utility model. Figure 9 This utility model is shown. Figure 8 Enlarged 3D structural diagram at point B.

[0016] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Column; 201. Tripod; 202. Reinforcing frame; 3. Connecting column; 301. Support; 302. Ratchet; 303. Threaded screw; 304. Intermittent gear; 305. Turntable; 306. Limiting rod; 307. Return spring; 308. Linkage shaft; 309. Linkage gear; 4. Top seat; 401. Drive shaft; 402. Threaded sleeve; 403. Drive gear; 404. Threaded rod; 405. Pressure plate; 5. Slump cylinder; 501. Pull plate; 502. Gripper; 503. Clamping pad; 504. Connecting rod; 505. Lifting platform; 506. Guide rod; 507. Connecting platform; 508. Handle; 6. Servo motor. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0019] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0020] Please see Figures 1-9 This utility model provides a technical solution: a concrete fluidity testing device, including a base plate 1, a top seat 4 and a servo motor 6; a column 2 is fixedly connected to the top of the base plate 1, the columns 2 are symmetrically installed near both sides of the base plate 1, a connecting column 3 is fixedly connected to the end of the column 2 away from the base plate 1, the top seat 4 is fixedly connected to the side of the connecting column 3 away from the column 2, a slump cylinder 5 is movably connected to the top of the base plate 1, the slump cylinder 5 is located near the center of the base plate 1, and the servo motor 6 is fixedly connected to the side of the top seat 4 away from the connecting column 3.

[0021] The connecting column 3 is located on the top of the base plate 1. The connecting column 3 and the top seat 4 are an integrated structure. The servo motor 6 is located near the center of the top seat 4, which can reduce the eccentric force and shaking generated when the servo motor 6 is running, and improve the stability and force balance of the transmission process.

[0022] A tripod 201 is fixedly connected to the side of the column 2. The tripod 201 is symmetrically installed on both sides of the column 2. The end of the tripod 201 away from the column 2 is fixedly connected to the top of the base plate 1. A reinforcing frame 202 is fixedly connected to the inside of the column 2. The end of the reinforcing frame 202 away from the column 2 is fixedly connected to the side of the connecting column 3 near the column 2. The arrangement of the tripod 201 and the reinforcing frame 202 enables the column 2 to form a stable triangular support system while forming multiple connections with the base plate 1 and the connecting column 3. This effectively improves the overall bending and shaking resistance of the column 2 and enhances the overall stability of the device.

[0023] A support 301 is fixedly connected to the back of the connecting column 3. A ratchet disc 302 is rotatably connected to the end of the support 301 away from the connecting column 3. A threaded screw 303 is fixedly connected to the bottom of the ratchet disc 302. An intermittent toothed disc 304 is engaged at the top of the ratchet disc 302. A turntable 305 is provided at the top of the intermittent toothed disc 304. When the intermittent toothed disc 304 is engaged with the ratchet disc 302, the threaded screw 303 can be intermittently driven, thereby driving the lifting mechanism to lift and lower stably.

[0024] A limit rod 306 is slidably connected inside the turntable 305. The limit rods 306 are symmetrically installed on both sides of the turntable 305. The end of the limit rod 306 away from the turntable 305 is fixedly connected to the top of the intermittent gear disc 304. A return spring 307 is sleeved on the outer side of the limit rod 306. One end of the return spring 307 is fixedly connected to the top of the intermittent gear disc 304, and the other end of the return spring 307 is fixedly connected to the bottom of the turntable 305. A linkage shaft 308 is fixedly connected to the inner wall of the turntable 305. Shaft 308 is rotatably connected inside top seat 4. Intermittent gear 304 is engaged with the outer wall of linkage shaft 308. Linkage gear 309 is fixedly connected to the top of linkage shaft 308. Linkage gear 309 is rotatably connected to the top of top seat 4. Through the cooperation of limit rod 306 and return spring 307, intermittent gear 304 is kept in close contact with turntable 305 and linkage shaft 308 during the cooperation process, thereby ensuring that the intermittent gear 304 and ratchet 302 can engage and disengage flexibly and reliably.

[0025] A drive shaft 401 is rotatably connected inside the top seat 4. The drive shaft 401 is fixedly connected to the bottom of the servo motor 6. A threaded sleeve 402 is fixedly connected to the end of the drive shaft 401 away from the servo motor 6. The threaded sleeve 402 is rotatably connected to the inside of the connecting column 3. A drive gear 403 is fixedly connected to the outer wall of the drive shaft 401. The drive gear 403 meshes with the outer wall of the linkage gear 309. A threaded rod 404 is threadedly connected to the inner wall of the threaded sleeve 402. A pressure plate 405 is fixedly connected to the end of the threaded rod 404 away from the threaded sleeve 402. The pressure plate 405 is set at the top of the slump cylinder 5. The drive shaft 401 drives the threaded sleeve 402 to rotate, causing the threaded rod 404 to move axially, thereby driving the pressure plate 405 to compact the concrete in the slump cylinder 5.

[0026] A pull plate 501 is fixedly connected to the outer wall of the slump cylinder 5. The pull plates 501 are symmetrically installed near the top of the slump cylinder 5. A gripper 502 is provided on the outer side of the slump cylinder 5. The gripper 502 is symmetrically installed near the slump cylinder 5. A clamping pad 503 is fixedly connected to the inner wall of the gripper 502. The clamping pad 503 is tightly attached to the outer wall of the slump cylinder 5. A connecting rod 504 is fixedly connected to the outer wall of the gripper 502. A lifting platform 505 is fixedly connected to the end of the connecting rod 504 away from the gripper 502. 05 is threaded onto the outer wall of the threaded screw 303. A guide rod 506 is fixedly connected to the side of the connecting rod 504 away from the gripper 502. The guide rod 506 is slidably connected inside the column 2. A connecting platform 507 is rotatably connected to the top of the base plate 1. The connecting platform 507 is fixedly connected to the end of the threaded screw 303 away from the ratchet disc 302. A handle 508 is fixedly connected to the outer wall of the connecting platform 507. The slump cylinder 5 is flexibly clamped by the clamping pad 503 inside the gripper 502 to avoid direct contact friction damage.

[0027] Working principle: See Figures 1-8 As shown, when the device is ready for use, first, place the device in the working area. The base plate 1 provides stable support for the whole, the column 2 provides stable support for the connecting column 3 and the top seat 4, and keeps the slump cylinder 5 in a stable position. Then, pour the concrete to be tested into the slump cylinder 5. The clamp 502 fixes the slump cylinder 5 in the center of the base plate 1 by clamping the soft pad 503, keeping the slump cylinder 5 stable and preventing shaking, thus completing the preparation work. See Figures 3-7As shown, during the testing process, firstly, the servo motor 6 is started by an external power source. The servo motor 6 stably drives the drive shaft 401 to rotate on the top seat 4, driving the threaded sleeve 402 to rotate. The threaded rod 404 rotates and moves downward, thereby pushing the pressure plate 405 into the interior of the slump cylinder 5. The pressure plate 405 gradually moves down along the inner wall of the slump cylinder 5 and compacts the internal concrete. During this process, the drive shaft 401 drives the drive gear 403 to rotate. Since the linkage gear 309 meshes with the drive gear 403, the linkage gear 309 drives the linkage shaft 308 to rotate, causing the turntable 305 and the intermittent toothed disc 304 to rotate synchronously. At this time, since the intermittent toothed disc 304 rotates against the direction of the ratchet teeth of the ratchet disc 302, the two cannot mesh, causing the threaded rod 303 to remain stationary and the lifting platform 505 to remain in its original position, thus completing the testing preparation. See Figures 3-8 As shown, when the concrete in the slump cone 5 is compressed, firstly, the servo motor 6 starts to drive in reverse, causing the drive shaft 401 and the linkage shaft 308 to rotate in opposite directions. The turntable 305 and the intermittent toothed disc 304 rotate in reverse accordingly. Under the elastic force of the return spring 307, the intermittent toothed disc 304 always keeps close to the ratchet disc 302 and is prevented from shaking under the stable constraint of the limit rod 306. The intermittent toothed disc 304 moves along the ratchet teeth of the ratchet disc 302 and meshes with them, thereby driving the ratchet disc 302 to rotate. The threaded screw 303 rotates accordingly, causing the lifting platform 505 to move along the threaded screw 302. 03. Moving upward, the lifting platform 505 drives the gripper 502 to rise synchronously via the connecting rod 504. With the cooperation of the clamping pad 503, it clamps the slump cylinder 5. At the same time, the gripper 502 pushes the pull plate 501, causing the slump cylinder 5 to gradually move upward and away from the bottom plate 1. At this time, under the action of gravity, the concrete flows out from the slump cylinder 5 and forms a slump phenomenon. Throughout the process, the guide rod 506 slides synchronously along the column 2 to ensure the stability of the upward movement of the lifting platform 505 and the connecting rod 504. Finally, the height of the concrete after slump is measured by an external measuring ruler to complete the test. See Figures 3-9 As shown, when the slump cylinder 5 needs to be reset, firstly, the intermittent toothed disc 304 is lifted by external force to overcome the elastic force of the reset spring 307 and disengage from the ratchet disc 302, thus releasing the engagement limit. Then, the handle 508 is gripped and rotated by external force, which drives the threaded screw 303 to rotate through the connecting platform 507, causing the lifting platform 505 to gradually descend, driving the gripper 502 and the slump cylinder 5 back to the base plate 1. During this process, the guide rod 506 continues to move along the column 2 to maintain the stability of the descent of the lifting platform 505 and the connecting rod 504, thereby completing the reset. It should be noted that the aforementioned servo motor 6 can be powered using existing operating techniques, whether by using a power supply unit or an external wire. These are all conventional operating techniques and will not be described in detail here.

[0028] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete fluidity testing device, comprising a base plate (1), a top seat (4), and a servo motor (6); characterized in that: The top of the base plate (1) is fixedly connected to a column (2). The columns (2) are symmetrically installed on both sides of the base plate (1). The end of the column (2) away from the base plate (1) is fixedly connected to a connecting column (3). The top seat (4) is fixedly connected to the side of the connecting column (3) away from the column (2). The top of the base plate (1) is movably connected to a slump cylinder (5). The slump cylinder (5) is located near the center of the base plate (1). The servo motor (6) is fixedly connected to the side of the top seat (4) away from the connecting column (3).

2. The concrete fluidity testing device according to claim 1, characterized in that: The connecting column (3) is located on the top of the base plate (1). The connecting column (3) and the top seat (4) are an integrated structure. The servo motor (6) is located near the center of the top seat (4).

3. The concrete fluidity testing device according to claim 1, characterized in that: A tripod (201) is fixedly connected to the side of the column (2). The tripod (201) is symmetrically installed on both sides of the column (2). The end of the tripod (201) away from the column (2) is fixedly connected to the top of the base plate (1). A reinforcing frame (202) is fixedly connected to the inside of the column (2). The end of the reinforcing frame (202) away from the column (2) is fixedly connected to the side of the connecting column (3) near the column (2).

4. The concrete fluidity testing device according to claim 1, characterized in that: A support (301) is fixedly connected to the back of the connecting column (3). A ratchet disc (302) is rotatably connected to the end of the support (301) away from the connecting column (3). A threaded screw (303) is fixedly connected to the bottom of the ratchet disc (302). An intermittent toothed disc (304) is engaged at the top of the ratchet disc (302). A turntable (305) is provided at the top of the intermittent toothed disc (304).

5. The concrete fluidity testing device according to claim 4, characterized in that: The turntable (305) is internally connected to a limiting rod (306), which is symmetrically installed on both sides of the turntable (305). The end of the limiting rod (306) away from the turntable (305) is fixedly connected to the top of the intermittent gear disc (304). A return spring (307) is sleeved on the outside of the limiting rod (306). One end of the return spring (307) is fixedly connected to the top of the intermittent gear disc (304), and the other end of the return spring (307) is fixedly connected to the bottom of the turntable (305). A linkage shaft (308) is fixedly connected to the inner wall of the turntable (305). The linkage shaft (308) is rotatably connected to the inside of the top seat (4). The intermittent gear disc (304) is engaged with the outer wall of the linkage shaft (308). A linkage gear (309) is fixedly connected to the top of the linkage shaft (308), and the linkage gear (309) is rotatably connected to the top of the top seat (4).

6. The concrete fluidity testing device according to claim 5, characterized in that: The top seat (4) is rotatably connected to a drive shaft (401), which is fixedly connected to the bottom of a servo motor (6). A threaded sleeve (402) is fixedly connected to one end of the drive shaft (401) away from the servo motor (6). The threaded sleeve (402) is rotatably connected to the inside of a connecting column (3). A drive gear (403) is fixedly connected to the outer wall of the drive shaft (401). The drive gear (403) meshes with the outer wall of a linkage gear (309). A threaded rod (404) is threadedly connected to the inner wall of the threaded sleeve (402). A pressure plate (405) is fixedly connected to one end of the threaded rod (404) away from the threaded sleeve (402). The pressure plate (405) is located at the top of the slump cylinder (5).

7. The concrete fluidity testing device according to claim 4, characterized in that: A pull plate (501) is fixedly connected to the outer wall of the slump cylinder (5). The pull plates (501) are symmetrically installed near the top of the slump cylinder (5). A clamp (502) is provided on the outer side of the slump cylinder (5). The clamps (502) are symmetrically installed near the slump cylinder (5). A clamping pad (503) is fixedly connected to the inner wall of the clamp (502). The clamping pad (503) is tightly attached to the outer wall of the slump cylinder (5). A connecting rod (504) is fixedly connected to the outer wall of the clamp (502). The connecting rod (504) is away from the clamp. A lifting platform (505) is fixedly connected to one end of the claw (502). The lifting platform (505) is threadedly connected to the outer wall of the threaded screw (303). A guide rod (506) is fixedly connected to the side of the connecting rod (504) away from the claw (502). The guide rod (506) is slidably connected to the inside of the column (2). A connecting platform (507) is rotatably connected to the top of the base plate (1). The connecting platform (507) is fixedly connected to the end of the threaded screw (303) away from the ratchet disc (302). A handle (508) is fixedly connected to the outer wall of the connecting platform (507).

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