Automatic testing device for expansion time of self-compacting concrete
Through the automatic testing device for the expansion time of self-compacting concrete, a mini motor and PLC are used to control the gear meshing to achieve timing synchronization, which solves the problem of timing error in the existing technology, realizes the accurate testing of the expansion time of self-compacting concrete, and improves the accuracy and objectivity of the test results.
Patent Information
- Application Number
- CN202422557793.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-23
AI Technical Summary
In the existing technology, the test method for the expansion time of self-compacting concrete has the problem that it is difficult to synchronize the start of timing when the slump cone is lifted and the stop of timing when the outer edge of the expanded concrete touches the 500mm diameter circle on the base plate, resulting in timing errors, affecting the accuracy and objectivity of the test results.
An automatic testing device for the expansion time of self-compacting concrete is used. The controller starts the mini motor to drive the gears to engage with the tooth grooves, so that the slump cone is lifted up and the timing is started. Combined with PLC control, the timing accuracy is ensured to 0.1s.
It achieves precise testing of the expansion time of self-compacting concrete, reduces timing errors, ensures the accuracy and objectivity of the test results, and improves the practicality of the device.
Smart Images
Figure CN223413150U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of compacted concrete expansion time testing, and in particular to an automatic testing device for the expansion time of self-compacting concrete. Background Art
[0002] Dense concrete is a kind of concrete with high fluidity, uniformity and stability. It can flow under its own weight and fill the formwork space without the need for external vibration when pouring. During the test, the slump cone is placed in the center of the base plate. After the self-compacting concrete mixture is poured until it is flush with the upper edge of the slump cone, the slump cone is immediately lifted up to a height of about 300mm. The timing starts when the slump cone is lifted away from the base plate, and the timing stops when the outer edge of the expanded concrete touches the 500mm diameter circle on the base plate. The measured time is the expansion time (T50) of the self-compacting concrete, which is required to be accurate to 0.1s.
[0003] In the existing technology, the test method using a stopwatch and manual timing has the problem of difficulty in synchronizing the timing of the slump cone being lifted and the timing of the start, and the timing of the expanded concrete outer edge touching the 500mm diameter circle on the bottom plate. This easily leads to timing errors and makes it difficult to ensure the accuracy and objectivity of the test results.
[0004] To this end, the present application proposes an automatic testing device for the expansion time of self-compacting concrete. Utility Model Content
[0005] The present application proposes an automatic testing device for the expansion time of self-compacting concrete to solve the problems raised in the above-mentioned background technology; a mini motor is started by a controller to drive the gears to rotate and engage with the tooth grooves to lift the slump cone up to a height of about 300 mm, and the timing module starts when the slump cone is lifted away from the base plate. The timing time can be observed through the display screen, and the timing stops when the outer edge of the expanded concrete touches a circle with a diameter of 500 mm on the base plate. The controller can adopt a PLC, and the PLC can accurately control it to ensure the accuracy of the test time, accurate to 0.1s, thereby solving the problem of the test method using a stopwatch and manual timing, which is difficult to synchronize the lifting of the slump cone and the start of timing, and the touching of the outer edge of the expanded concrete with a circle with a diameter of 500 mm on the base plate and the stop of timing. It is not easy to produce timing errors, thereby ensuring the accuracy and objectivity of the test results, and greatly improving the practicality of the device.
[0006] In order to achieve the above objectives, this application adopts the following technical solutions:
[0007] A self-compacting concrete expansion time automatic testing device includes a base plate, a surrounding plate and compacted concrete, the surrounding plate is fixedly connected to the top of the base plate, and compacted concrete is poured inside the surrounding plate and on the top of the base plate. A fixed plate is provided on the top of the surrounding plate, and a testing mechanism is fixedly connected to the top of the fixed plate. The testing mechanism includes a controller, a display screen and a timing module. The display screen is provided on the surface of the controller, and the timing module is provided inside the controller.
[0008] As a preferred embodiment, a mounting cylinder is fixedly connected to the interior of the fixing plate, and a slump cylinder is slidably connected to the interior of the mounting cylinder;
[0009] By raising and lowering the slump cone in the installation cylinder, the problem of easy tilting and deviation caused by manual operation is reduced, thereby improving the practicality of the device.
[0010] As a preferred embodiment, a driving mechanism is provided inside the mounting tube, the driving mechanism includes a mini motor, and the mini motor is electrically connected to the controller, the mini motor is fixedly connected to the outside of the mounting tube, and the output end of the mini motor extends to the inside of the mounting tube and is fixedly connected to a gear;
[0011] The practicality of the device is improved by setting up a mini motor to replace manual labor to ensure accuracy during testing.
[0012] As a preferred embodiment, a tooth groove is provided inside the slump cone, and the gear is meshedly connected with the tooth groove;
[0013] The gears are engaged with the tooth grooves to cause the slump cone to be lifted up to a height of about mm. When the slump cone is lifted off the bottom plate, the timing module starts timing, thereby improving the practicality of the device.
[0014] As a preferred embodiment, the bottom of the fixing plate is fixedly connected to two mounting plates, and a fixing mechanism is provided inside the two mounting plates. The fixing mechanism includes a threaded rod, and the two threaded rods are threadedly connected to the inside of the mounting plate, and one end of the two threaded rods is fixedly connected to a handle;
[0015] By utilizing the fixing mechanism, the fixing plate can be stably mounted on the enclosure plate, thereby improving the stability during the slump cone test and thus enhancing the practicability of the device.
[0016] As a preferred embodiment, the ends of the two threaded rods away from the handles are movably connected to sleeves, one end of the two sleeves is fixedly connected to clamping blocks, and the sides of the two clamping blocks away from the sleeves are in contact with the outside of the enclosure;
[0017] By providing a handle, it is easy to grasp the threaded rod and control the rotation of the threaded rod, thereby improving the practicality of the device.
[0018] Beneficial effects of this application:
[0019] 1. This device automatically tests the expansion time of self-compacting concrete. A controller activates a mini motor, which drives gears to rotate and mesh with tooth grooves, lifting the slump cone to a height of approximately 300 mm. A timing module begins when the slump cone is lifted off the base plate, and the timer is displayed. The timer stops when the outer edge of the expanded concrete touches a 500 mm diameter circle on the base plate. The controller utilizes a PLC for precise control, ensuring test time accuracy to 0.1 second, greatly enhancing the device's practicality.
[0020] 2. This automatic testing device for the expansion time of self-compacting concrete solves the problem of using a stopwatch or manual timing in the test method, which is that it is difficult to synchronize the timing when the slump cone is lifted and the timing starts, and when the outer edge of the expanded concrete touches the 500mm diameter circle on the bottom plate and stops. It is not easy to produce timing errors, ensures the accuracy and objectivity of the test results, and greatly improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the main body of the device of this application;
[0022] Figure 2 This is a schematic diagram of the interior of the device of this application;
[0023] Figure 3 This is a schematic top view of the interior of the device of the present application;
[0024] Figure 4 This is a schematic top view of the interior of the controller of the device of this application.
[0025] Numbers in the figure: 1. Base plate; 2. Enclosure; 3. Fixing plate; 4. Testing mechanism; 41. Controller; 42. Display screen; 43. Timing module; 5. Mounting cylinder; 6. Slump cylinder; 7. Driving mechanism; 71. Mini motor; 72. Gear; 73. Tooth groove; 8. Mounting plate; 9. Fixing mechanism; 91. Threaded rod; 92. Sleeve; 93. Clamp; 94. Handle; 10. Compacted concrete. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.
[0027] Reference Figure 1-3A self-compacting concrete expansion time automatic testing device includes a base plate 1, a surrounding plate 2 and compacted concrete 10. The surrounding plate 2 is fixedly connected to the top of the base plate 1. The compacted concrete 10 is poured inside the surrounding plate 2 and located on the top of the base plate 1. A fixed plate 3 is provided on the top of the surrounding plate 2.
[0028] Reference Figure 1-4 A testing mechanism 4 is fixedly connected to the top of the fixed plate 3. The testing mechanism 4 includes a controller 41, a display screen 42 and a timing module 43. The display screen 42 is set on the surface of the controller 41, and the timing module 43 is set inside the controller 41; the display screen 42 can observe the timing time, and the timing stops when the expanded outer edge of the concrete touches the circumference of the 500mm diameter on the bottom plate 1. The controller 41 can adopt PLC, and the precise control of PLC ensures the accuracy of the test time, which is accurate to 0.1s.
[0029] Reference Figure 1-3 The interior of the fixed plate 3 is fixedly connected to the mounting cylinder 5, and the interior of the mounting cylinder 5 is slidably connected to the slump cylinder 6; the slump cylinder 6 is raised and lowered in the mounting cylinder 5, which reduces the problem of manual operation, easy tilting and easy deviation, thereby improving the practicality of the device.
[0030] Reference Figure 1-4 A driving mechanism 7 is provided inside the mounting tube 5, and the driving mechanism 7 includes a mini motor 71. The mini motor 71 is fixedly connected to the outside of the mounting tube 5, and the mini motor 71 is electrically connected to the controller 41. The output end of the mini motor 71 extends to the inside of the mounting tube 5 and is fixedly connected to a gear 72. By providing the mini motor 71, manual labor is replaced to ensure accuracy during the test, thereby improving the practicality of the device.
[0031] Reference Figure 1-3 A tooth groove 73 is provided inside the slump cone 6, and the gear 72 is meshed with the tooth groove 73; the engagement of the gear 72 with the tooth groove 73 causes the slump cone 6 to be lifted up to a height of about 300 mm, and the timing module 43 starts timing when the slump cone 6 is lifted away from the base plate 1, thereby improving the practicality of the device.
[0032] Reference Figure 1-3 Two mounting plates 8 are fixedly connected to the bottom of the fixing plate 3, and a fixing mechanism 9 is provided inside the two mounting plates 8. The fixing mechanism 9 includes a threaded rod 91, and the two threaded rods 91 are threadedly connected to the inside of the mounting plate 8. One end of the two threaded rods 91 is fixedly connected to a handle 94; by utilizing the fixing mechanism 9, the fixing plate 3 can be firmly installed on the enclosure 2, thereby improving the stability of the slump cylinder 6 during testing, thereby improving the practicality of the device.
[0033] Reference Figure 1-2The ends of the two threaded rods 91 away from the handle 94 are movably connected to the sleeve 92, and one end of the two sleeves 92 is fixedly connected to the clamping block 93, and the side of the two clamping blocks 93 away from the sleeve 92 is in contact with the outside of the enclosure 2; by providing the handle 94, it is easy to grasp the threaded rod 91 and control the rotation of the threaded rod 91, thereby improving the practicality of the device.
[0034] Working principle: When the device is used, the fixing plate 3 is placed on the enclosure 2 so that the slump cone 6 is located at the center of the bottom plate 1. Then, the mini motor 71 is started by the controller 41. The mini motor 71 drives the gear 72 to rotate. When the gear 72 rotates and engages with the tooth groove 73, the slump cone 6 is forced to move downward in the installation cylinder 5, and the self-compacting concrete 10 mixture is poured in. Then, the mini motor 71 is started by the controller 41 to drive the gear 72 to rotate and engage with the tooth groove 73 to lift the slump cone 6 up to a height of about 300 mm. When the slump cone 6 is lifted and leaves the bottom plate 1, the slump cone 6 is lifted and moves away from the bottom plate 1. The timing module 43 starts timing, and the timing time can be observed through the display screen 42. The timing stops when the expanded concrete outer edge touches the 500mm diameter circle on the base plate 1. The controller 41 can adopt PLC, and the PLC can accurately control to ensure the accuracy of the test time, accurate to 0.1s. Therefore, the problem of the test method using a stopwatch and manual timing, that is, it is difficult to synchronize the lifting of the slump cone and the start of timing, and the touching of the expanded concrete outer edge on the base plate with the 500mm diameter circle and the stop of timing, is solved. It is not easy to produce timing errors, and the accuracy and objectivity of the test results are guaranteed.
[0035] The above are only preferred specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present application within the technical scope disclosed in the present application, and they should be covered by the protection scope of the present application.
Claims
1. An automatic testing device for expansion time of self-compacting concrete, comprising a base plate (1), a surrounding plate (2) and compacted concrete (10), characterized in that: The enclosure (2) is fixedly connected to the top of the base plate (1); dense concrete (10) is poured inside the enclosure (2) and located on the top of the base plate (1); a fixing plate (3) is provided on the top of the enclosure (2); a testing mechanism (4) is fixedly connected to the top of the fixing plate (3); the testing mechanism (4) comprises a controller (41), a display screen (42) and a timing module (43); the display screen (42) is provided on the surface of the controller (41); and the timing module (43) is provided inside the controller (41).
2. The automatic testing device for expansion time of self-compacting concrete according to claim 1, characterized in that: The interior of the fixed plate (3) is fixedly connected to a mounting cylinder (5), and the interior of the mounting cylinder (5) is slidably connected to a slump cylinder (6).
3. The automatic testing device for expansion time of self-compacting concrete according to claim 2, characterized in that: A driving mechanism (7) is provided inside the mounting tube (5), and the driving mechanism (7) includes a mini motor (71). The mini motor (71) is fixedly connected to the outside of the mounting tube (5), and the mini motor (71) is electrically connected to the controller (41). The output end of the mini motor (71) extends to the inside of the mounting tube (5) and is fixedly connected to a gear (72).
4. The automatic testing device for expansion time of self-compacting concrete according to claim 3, characterized in that: A tooth groove (73) is provided inside the slump cylinder (6), and the gear (72) is meshedly connected with the tooth groove (73).
5. The automatic testing device for expansion time of self-compacting concrete according to claim 1, characterized in that: The bottom of the fixing plate (3) is fixedly connected to two mounting plates (8), and a fixing mechanism (9) is provided inside the two mounting plates (8). The fixing mechanism (9) includes a threaded rod (91), and the two threaded rods (91) are threadedly connected to the inside of the mounting plate (8), and one end of the two threaded rods (91) is fixedly connected to a handle (94).
6. The automatic testing device for expansion time of self-compacting concrete according to claim 5, characterized in that: One end of each of the two threaded rods (91) away from the handle (94) is movably connected to a sleeve (92), one end of each of the two sleeves (92) is fixedly connected to a clamping block (93), and one side of each of the two clamping blocks (93) away from the sleeve (92) is in contact with the outside of the enclosure (2).