Concrete slump detection device

Abstract

The invention belongs to the technical field of concrete detection, and discloses a concrete slump detection device which comprises a base, side plates are fixedly mounted on the two sides of the top end of the base, first threaded rods are rotationally connected to the inner walls of the two side plates, first motors are mounted at the top ends of the two first threaded rods, and second motors are mounted at the top ends of the first threaded rods. The outer walls of the two first threaded rods are in threaded connection with a moving structure and a measuring structure correspondingly, a slump cylinder is fixedly installed at one end of the moving structure, and a trowelling assembly is arranged at the top end of the slump cylinder. When a second motor is started, a second threaded rod is driven to rotate, the second threaded rod rotates to drive a moving seat to move, the moving seat moves to drive a leveling plate to move, redundant concrete at the top of the slump cylinder is scraped off by the leveling plate and leveled, and the consistency of test results is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete detection, and in particular relates to a concrete slump detection device. Background Art

[0002] The concrete slump test is mainly used to measure the consistency of fresh concrete before it sets to check the workability of the concrete and the ease with which it flows. It can also serve as an indicator of improperly mixed batches and ensure the uniformity of different concrete loads under site conditions; After searching, such as patent: CN110231466B, a concrete slump detection device with an adjustable compaction plate includes a chassis, a first guide rail, a mobile frame, a collapse cone, an inlet, a tamping device, a telescopic rod, a support rod, a motor, a second guide rail, and a measuring rod. The two sides of the chassis are respectively vertically connected to the first guide rail and the second guide rail. The collapse cone is arranged in the middle of the chassis, and an inlet is arranged on the top of the collapse cone. The collapse cone is connected to the mobile frame, and the mobile frame is installed on the first guide rail. A tamping device is arranged above the collapse cone, and the tamping device is connected to the support rod through a telescopic rod. The support rod is installed on the second guide rail, and the measuring rod is installed below the support rod. The motor is installed on the support rod and is connected to the telescopic rod through a belt transmission. The distance between the compaction plate and the inner wall of the collapse cone is adjusted by adjusting the connection position of the compaction plate and the telescopic rod, so that concrete of different heights in the collapse cone can be compacted uniformly in all directions. At present, when conducting concrete slump test, concrete is generally poured directly into the slump cone. After filling, in order to ensure the accuracy of the test, the top of the slump cone needs to be smoothed manually. This process is not only time-consuming and labor-intensive, but the accuracy of manual operation is often affected by the skills and experience of the operator, which may lead to inconsistency in test results. Summary of the invention

[0003] The purpose of the present invention is to provide a concrete slump detection device to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a concrete slump detection device, comprising a base, side plates are fixedly installed on both sides of the top of the base, the inner walls of the two side plates are rotatably connected with first threaded rods, the tops of the two first threaded rods are installed with first motors, the outer walls of the two first threaded rods are respectively threadedly connected with a moving structure and a measuring structure, a slump cone is fixedly installed at one end of the moving structure, and a smoothing component is arranged at the top of the slump cone; The leveling component includes a leveling plate arranged at the top of the measuring structure. Knocking components are arranged at both ends of the leveling plate. Moving seats are connected to both ends of the leveling plate. A second threaded rod is threadedly connected to the inner wall of one of the moving seats. One end of the second threaded rod is fixedly installed with a second motor. The second threaded rod and the second motor are both installed inside the collection box. The collection box is arranged on the outer wall of the measuring structure. One end of the collection box is installed with the leveling plate.

[0005] As a further technical solution of the present invention, the inside of the collection box is inclined towards the side of the maintenance plate.

[0006] As a further technical solution of the present invention, the knocking component includes knocking plates arranged at one end of the leveling plate. There are two knocking plates, and the two knocking plates are symmetrically arranged on both sides of the leveling plate. One end of each of the two knocking plates is connected to a connecting plate. The two connecting plates are both installed on the outer wall of the lead screw. The lead screw is rotatably installed inside the moving seat. A gear is fixedly installed on the outer wall of the lead screw. A rack plate is meshed and connected to one side of the gear. A first spring is arranged at the top of the rack plate. The bottom end of the rack plate is fixedly connected to a sliding rod. The sliding rod is slidably installed inside the guiding chute. The guiding chute is opened on the side wall of the collection box.

[0007] As a further technical solution of the present invention, two threads are arranged on the outer wall of the lead screw, and the directions of the two threads are opposite.

[0008] As a further technical solution of the present invention, knocking rods are evenly distributed on the inner wall of the knocking plate. A second spring is installed between each knocking rod and the knocking plate.

[0009] As a further technical solution of the present invention, a scraping plate is arranged at the top of the collection box. The scraping plate is arranged on one side of the leveling plate. The leveling plate and the moving seat are rotatably connected through a first rotating shaft.

[0010] As a further technical solution of the present invention, the connecting plate and the knocking plate are rotatably connected through a second rotating shaft.

[0011] As a further technical solution of the present invention, torsion springs are installed on the outer walls of the first rotating shaft and the second rotating shaft.

[0012] As a further technical solution of the present invention, limit blocks are fixedly installed on the outer walls of the first rotating shaft and the second rotating shaft.

[0013] As a further technical solution of the present invention, both ends of the scraping plate are embedded inside the collection box. A third spring is arranged between the scraping plate and the collection box.

[0014] The beneficial effects of the present invention are as follows: 1. Through the arrangement of the leveling component, when detecting the slump of concrete, the concrete is first poured in three times. After it is filled, the second motor is started. When the second motor starts, it drives the rotation of the second threaded rod. The rotation of the second threaded rod drives the movement of the moving seat, and the movement of the moving seat drives the movement of the leveling plate, so that the leveling plate scrapes off the excess concrete on the top of the slump cone and levels it, which helps to improve the consistency of the test results.

[0015] 2. Through the arrangement of the knocking component, when the leveling plate scrapes off the excess concrete, the movement of the moving seat drives the sliding rod to slide on the inner wall of the guiding chute. Through the guiding of the convex surface of the guiding chute, the sliding rod moves upward. The movement of the sliding rod drives the movement of the rack plate, the movement of the rack plate drives the rotation of the gear, the rotation of the gear drives the rotation of the screw rod, and the rotation of the screw rod drives the connecting plate to move away from the leveling plate. At the same time, when the rack plate moves upward, the first spring deforms and stores elastic potential energy. When the sliding rod moves to the concave surface of the guiding chute, the elastic potential energy is released through the first spring to make the rack plate move downward and reset, so that the connecting plate and the knocking plate move toward the leveling plate, generating a knock on the leveling plate, which helps to improve the leveling effect.

[0016] 3. Through the arrangement of the scraper, when the leveling plate levels the concrete on the top of the measuring structure, the leveling plate moves toward the scraper. When the leveling plate contacts the scraper, the leveling plate is forced to rotate, and the concrete attached to the side wall of the leveling plate is scraped off into the collection box by the scraper for collection, which helps to keep the side wall of the leveling plate clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic sectional view of the overall structure of the present invention; Figure 3 is a schematic diagram of the structure at the slump cone and the collection box of the present invention; Figure 4 is the present invention Figure 3 a schematic enlarged view of the structure at A in; Figure 5 is a schematic sectional view of the structure at the leveling plate of the present invention; Figure 6 is a schematic sectional view of the structure at the knocking plate of the present invention; Figure 7 is a schematic sectional view of the structure at the scraper of the present invention.

[0018] In the figure: 1, base; 2, side plate; 3, slump cone; 4, moving structure; 5, measuring structure; 6, first threaded rod; 7, first motor; 8, collection box; 9, screeding plate; 10, moving seat; 11, second threaded rod; 12, second motor; 13, guiding chute; 14, sliding rod; 15, rack plate; 16, gear; 17, lead screw; 18, connecting plate; 19, knocking plate; 20, first spring; 21, knocking rod; 22, second spring; 23, scraper; 24, third spring; 25, first rotating shaft; 26, second rotating shaft; 27, torsion spring; 28, limiting block; 29, maintenance plate. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1 to 7 shown, in the embodiment of the present invention, a concrete slump detection device includes a base 1, and side plates 2 are fixedly installed on both sides of the top of the base 1. The inner walls of the two side plates 2 are rotatably connected with first threaded rods 6, and first motors 7 are installed at the tops of the two first threaded rods 6. The outer walls of the two first threaded rods 6 are respectively threadedly connected with a moving structure 4 and a measuring structure 5. One end of the moving structure 4 is fixedly installed with a slump cone 3, and a screeding assembly is arranged at the top of the slump cone 3.

[0021] The screeding assembly includes a screeding plate 9 arranged at the top of the measuring structure 5. Knocking assemblies are arranged at both ends of the screeding plate 9. Moving seats 10 are connected to both ends of the screeding plate 9. The inner wall of one of the moving seats 10 is threadedly connected with a second threaded rod 11, and a second motor 12 is fixedly installed at one end of the second threaded rod 11. The second threaded rod 11 and the second motor 12 are both installed inside the collection box 8. The collection box 8 is arranged on the outer wall of the measuring structure 5, and a screeding plate 9 is installed at one end of the collection box 8.

[0022] When detecting the slump of concrete, first pour the concrete in three times. After filling, start the second motor 12. When the second motor 12 starts, it drives the rotation of the second threaded rod 11. The rotation of the second threaded rod 11 drives the movement of the moving seat 10. The movement of the moving seat 10 drives the movement of the screeding plate 9, so that the screeding plate 9 scrapes off the excess concrete at the top of the slump cone 3 and levels it, which helps to improve the consistency of the test results.

[0023] As Figures 1 to 3 shown, the inside of the collection box 8 is inclined towards the side of the maintenance plate 29.

[0024] The collection box 8 is detachably connected to the maintenance plate 29; when the screed plate 9 scrapes off the excess concrete, it is collected by the collection box 8 and guided to one side of the maintenance plate 29 through its inclination, and finally cleaned by removing the maintenance plate 29, which helps to improve the cleaning efficiency.

[0025] As Figures 1 to 5 As shown in the figure, the knocking component includes knocking plates 19 arranged at one end of the screed plate 9. There are two knocking plates 19, and the two knocking plates 19 are symmetrically arranged on both sides of the screed plate 9. One end of each of the two knocking plates 19 is connected to a connecting plate 18, and the two connecting plates 18 are both installed on the outer wall of the lead screw 17. The lead screw 17 is rotatably installed inside the moving seat 10. A gear 16 is fixedly installed on the outer wall of the lead screw 17. One side of the gear 16 is meshed with a rack plate 15. A first spring 20 is arranged at the top of the rack plate 15. The bottom end of the rack plate 15 is fixedly connected to a sliding rod 14, and the sliding rod 14 is slidably installed on the inner wall of the guiding chute 13. The guiding chute 13 is opened on the side wall of the collection box 8.

[0026] When the screed plate 9 scrapes off the excess concrete, the movement of the moving seat 10 drives the sliding rod 14 to slide on the inner wall of the guiding chute 13. Through the convex surface guiding of the guiding chute 13, the sliding rod 14 moves upward. The movement of the sliding rod 14 drives the movement of the rack plate 15. The movement of the rack plate 15 drives the rotation of the gear 16. The rotation of the gear 16 drives the rotation of the lead screw 17. The rotation of the lead screw 17 drives the connecting plate 18 to move away from one side of the screed plate 9. At the same time, when the rack plate 15 moves upward, the first spring 20 deforms and stores elastic potential energy. When the sliding rod 14 moves to the concave surface of the guiding chute 13, the elastic potential energy is released through the first spring 20 to make the rack plate 15 move downward and reset, so that the connecting plate 18 and the knocking plate 19 move toward one side of the screed plate 9, knocking on the screed plate 9, which helps to improve the screeding effect.

[0027] As Figures 1 to 5 As shown in the figure, two threads are arranged on the outer wall of the lead screw 17, and the directions of the two threads are opposite. The knocking plates 19 on both sides of the screed plate 9 move synchronously and in opposite directions, so that the two knocking plates 19 knock on both sides of the screed plate 9 at the same time, further reducing the unevenness of the concrete surface and ensuring the accuracy of the measurement results.

[0028] As Figure 6 As shown in the figure, knocking rods 21 are evenly distributed on the inner wall of the knocking plate 19, and a second spring 22 is installed between each knocking rod 21 and the knocking plate 19.

[0029] The tapping rod 21 can move a certain distance inside the tapping plate 19. When the tapping plate 19 taps the leveling plate 9, the elastic tapping rod 21 can absorb part of the impact force during tapping, reducing the direct impact and damage to the concrete surface. This helps to protect the integrity of the concrete specimen and avoid adverse effects on the test results.

[0030] As Figures 1 to 7 shown, a scraper 23 is provided at the top of the collection box 8. The scraper 23 is arranged on one side of the leveling plate 9. The leveling plate 9 and the moving seat 10 are rotatably connected through a first rotating shaft 25.

[0031] When the leveling plate 9 levels the concrete at the top of the measuring structure 5, the leveling plate 9 moves towards one side of the scraper 23. When the leveling plate 9 contacts the scraper 23, the leveling plate 9 is forced to rotate, and the concrete attached to the side wall of the leveling plate 9 is scraped off by the scraper 23 and collected into the collection box 8, which helps to keep the side wall of the leveling plate 9 clean. Preferably, two scrapers 23 can be symmetrically arranged. The two scrapers 23 are distributed on both sides of the leveling plate 9, and can clean the concrete attached to both sides of the leveling plate 9.

[0032] As Figure 6 shown, the connecting plate 18 and the tapping plate 19 are rotatably connected through a second rotating shaft 26.

[0033] When the leveling plate 9 contacts the scraper 23 and rotates under force, the tapping plate 19 rotates, ensuring the stability and reliability of the device operation.

[0034] As Figure 5 and Figure 6 shown, coil springs 27 are installed on the outer walls of the first rotating shaft 25 and the second rotating shaft 26.

[0035] When the leveling plate 9 approaches the scraper 23 and the leveling plate 9 and the tapping plate 19 rotate, the coil spring 27 deforms to store elastic potential energy. When the leveling plate 9 moves away from the scraper 23, the elastic potential energy is released by the coil spring 27 to make the leveling plate 9 and the tapping plate 19 reverse and reset.

[0036] As Figure 5 and Figure 6 shown, limit blocks 28 are fixedly installed on the outer walls of the first rotating shaft 25 and the second rotating shaft 26. Sliding grooves for the limit blocks 28 to rotate are provided on the inner walls of the moving seat 10 and the connecting plate 18, and the rotation angle of the limit blocks 28 is limited through these sliding grooves. When the leveling plate 9 and the tapping plate 19 rotate, the rotation angles of the leveling plate 9 and the tapping plate 19 are limited.

[0037] As Figures 1 to 7As shown, both ends of the scraping plate 23 are embedded inside the collection box 8, and a third spring 24 is provided between the scraping plate 23 and the collection box 8. Due to the elastic potential energy of the third spring 24, the scraping plate 23 always has a tendency to move towards the screeding plate 9. When the screeding plate 9 comes into contact with the scraping plate 23, the scraping plate 23 can slide a certain distance, which helps to scrape off the concrete adhering to the side wall of the screeding plate 9.

[0038] Working principle and usage process: When conducting a slump test on concrete, first pour the concrete in three times. After filling it up, start the second motor 12. When the second motor 12 starts, it drives the rotation of the second threaded rod 11. The rotation of the second threaded rod 11 drives the movement of the moving seat 10. The movement of the moving seat 10 drives the movement of the screeding plate 9, so that the screeding plate 9 scrapes off the excess concrete on the top of the slump cone 3 and collects it through the collection box 8.

[0039] The movement of the moving seat 10 drives the sliding rod 14 to slide inside the inner wall of the guiding chute 13. Through the convex surface guiding of the guiding chute 13, the sliding rod 14 moves upward. The movement of the sliding rod 14 drives the movement of the rack plate 15. The movement of the rack plate 15 drives the rotation of the gear 16. The rotation of the gear 16 drives the rotation of the lead screw 17. The rotation of the lead screw 17 drives the connecting plate 18 to move away from the screeding plate 9. At the same time, when the rack plate 15 moves upward, the first spring 20 deforms and stores elastic potential energy. When the sliding rod 14 moves to the concave surface of the guiding chute 13, the elastic potential energy is released through the first spring 20 to make the rack plate 15 move downward and reset, so that the connecting plate 18 and the knocking plate 19 move towards the screeding plate 9, generating a knock on the screeding plate 9.

[0040] When the knocking plate 19 knocks on the screeding plate 9, the elastic knocking rod 21 can absorb part of the impact force during knocking, reducing the direct impact and damage to the concrete surface.

[0041] When the screeding plate 9 moves and comes into contact with the scraping plate 23, the screeding plate 9 is forced to rotate, and the scraping plate 23 scrapes off the concrete adhering to the side of the screeding plate 9 into the collection box 8 for collection, which helps to keep the side wall of the screeding plate 9 clean.

[0042] After scraping the concrete on the top of the measuring structure 5 flat, start the first motor 7 to rotate the first threaded rod 6, drive the slump cone 3 to move upward through the moving structure 4, so that the concrete slumps under the action of gravity, and finally measure the vertical distance of the concrete through the measuring structure 5.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete slump detection device, comprising a base (1), characterized in that: Side plates (2) are fixedly mounted on both sides of the top of the base (1); the inner walls of the two side plates (2) are rotatably connected to first threaded rods (6); the tops of the two first threaded rods (6) are each equipped with a first motor (7); the outer walls of the two first threaded rods (6) are respectively threadedly connected to a moving structure (4) and a measuring structure (5); a slump cone (3) is fixedly mounted on one end of the moving structure (4); and a leveling assembly is provided on the top of the slump cone (3); The smoothing component comprises a smoothing plate (9) arranged at the top of the measuring structure (5), and both ends of the smoothing plate (9) are provided with knocking components. Both ends of the smoothing plate (9) are connected to moving seats (10), and a second threaded rod (11) is threadedly connected to the inner wall of one of the moving seats (10), and a second motor (12) is fixedly mounted on one end of the second threaded rod (11). The second threaded rod (11) and the second motor (12) are both mounted inside a collecting box (8), and the collecting box (8) is arranged on the outer wall of the measuring structure (5), and the smoothing plate (9) is mounted on one end of the collecting box (8).

2. A concrete slump detection device according to claim 1, characterized in that: The interior of the collection box (8) is arranged to be inclined toward one side of the maintenance plate (29).

3. A concrete slump detection device according to claim 1, characterized in that: The knocking assembly comprises a knocking plate (19) arranged at one end of the trowel plate (9), wherein two knocking plates (19) are provided, and the two knocking plates (19) are symmetrically arranged on both sides of the trowel plate (9), and one end of each of the two knocking plates (19) is connected to a connecting plate (18), and the two connecting plates (18) are installed on the outer wall of a screw rod (17), and the screw rod (17) is rotatably installed inside the movable seat (10), and a gear (16) is fixedly installed on the outer wall of the screw rod (17), and one side of the gear (16) is meshingly connected to a rack plate (15), and a first spring (20) is provided at the top end of the rack plate (15), and a sliding rod (14) is fixedly connected to the bottom end of the rack plate (15), and the sliding rod (14) is slidably installed on the inner wall of a guide slot (13), and the guide slot (13) is opened on the side wall of the collection box (8).

4. A concrete slump detection device according to claim 3, characterized in that: Two threads are arranged on the outer wall of the screw rod (17), and the two threads are arranged in opposite directions.

5. A concrete slump detection device according to claim 3, characterized in that: The inner wall of the knocking plate (19) is evenly distributed with knocking rods (21), and a second spring (22) is installed between each of the knocking rods (21) and the knocking plate (19).

6. A concrete slump detection device according to claim 1, characterized in that: A scraper (23) is provided at the top end of the collecting box (8), and the scraper (23) is provided on one side of a trowel plate (9). The trowel plate (9) is rotatably connected to the movable seat (10) via a first rotating shaft (25).

7. A concrete slump detection device according to claim 5, characterized in that: The connecting plate (18) and the striking plate (19) are rotationally connected via a second rotating shaft (26).

8. A concrete slump detection device according to claim 6, characterized in that: Coil springs (27) are installed on the outer walls of the first rotating shaft (25) and the second rotating shaft (26).

9. A concrete slump detection device according to claim 8, characterized in that: Limit blocks (28) are fixedly mounted on the outer walls of the first rotating shaft (25) and the second rotating shaft (26).

10. A concrete slump detection device according to claim 6, characterized in that: Both ends of the scraper (23) are embedded in the interior of the collection box (8), and a third spring (24) is provided between the scraper (23) and the collection box (8).

Images