Self-compacting concrete setting time monitoring device and monitoring method

Abstract

The present invention discloses a self-compacting concrete setting time monitoring device and a monitoring method thereof, which relate to the technical field of concrete setting time measurement. The device comprises a base plate, four side plates are provided on the top surface of the base plate, and concrete blocks are placed between the four side plates; U-shaped plates are fixed at the corners of the top surface of the base plate, and the top of the opening of the U-shaped plates is provided with a notched gear, and the notched portion of the notched gear is fixed with a limit swing arm, and the inner end of the limit swing arm is installed with a first pressure sensor, and the first pressure sensor is abutted against the top surface of the concrete block; T-shaped slide plates are engaged with the middle of the four side edges of the bottom surface of the base plate, and the outer end of the T-shaped slide plates is fixed with a positioning baffle, and the inner side of the top end of the positioning baffle is installed with a second pressure sensor, and the second pressure sensor passes through a tapered through hole and abuts against the side of the concrete block. The present invention not only facilitates all-round detection of concrete setting time, but also increases the accuracy of experimental data.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete setting time measurement, in particular to a self-compacting concrete setting time monitoring device and a monitoring method thereof. Background Art

[0002] A Chinese utility model discloses an automatic detection device for concrete setting time (publication number: CN205538554U). The device comprises a base, a lifting device, a fixed bracket, a distance monitoring device, a testing device, a test mold, a rotating device, a pressure sensor, and a program control console. The lifting device comprises a fixed end and a sliding end. The fixed bracket is fixed to the lifting end of the lifting device. The displacement sensor is located on the fixed bracket. The testing device is threadedly secured to the fixed bracket. The rotating device is located on the base. The pressure sensor is glued to the base and then threadedly secured. The program control console is located at the lower end of the base.

[0003] The current monitoring of concrete setting time has the following disadvantages: 1. When the setting time of concrete is more than ten hours, manual testing and recording of the values are required every hour, which not only increases the manual operation cost, but also makes it difficult to ensure the accuracy of practical data; 2. When manual measurement of concrete is carried out, it is inconvenient to conduct all-round testing of the concrete, and the measurement results at different locations are different, which can easily cause measurement errors. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem of inaccurate concrete setting time monitoring data in the prior art, and to propose a self-compacting concrete setting time monitoring device and a monitoring method thereof.

[0005] In order to solve the problem of inaccurate concrete setting time monitoring data in the prior art, the present invention adopts the following technical solutions:

[0006] The self-compacting concrete setting time monitoring device comprises a bottom plate, the top surface of which is provided with four side plates formed by splicing in a square shape, concrete blocks are placed between the four side plates, and a tapered through hole is opened in the middle of the outer side surface of each side plate;

[0007] U-shaped plates are fixedly provided at the four corners of the top surface of the bottom plate, and a notched gear is rotatably connected to the top of the opening of each U-shaped plate. A limiting swing arm is fixedly provided in the notched portion of each notched gear, and the inner end portion of each limiting swing arm extends above the concrete block. A first pressure sensor is installed at the inner end portion of each limiting swing arm, and the pressure detection end of each first pressure sensor is against the top surface of the concrete block;

[0008] A T-shaped slide groove is provided in the middle of the four side edges of the bottom surface of the base plate, and a slidably connected T-shaped slide plate is engaged inside each of the T-shaped slide grooves. A positioning baffle is fixed to the outer end of each of the T-shaped slide plates, and a second pressure sensor is installed on the inner side of the top end of each of the positioning baffles. Each of the second pressure sensors passes through the conical through hole on the corresponding side and rests on the side of the concrete block.

[0009] Preferably, L-shaped card plates are fixed on the inner side of the four corners of the top surface of the bottom plate, and rectangular card slots are opened at both ends of the side plates, and both sides of the L-shaped card plates are engaged in a corresponding pair of rectangular card slots.

[0010] Preferably, a rotatably connected driving gear is provided in the middle of the opening of the U-shaped plate, and the driving gear is meshed with the notched gear. A first motor is fixed in the middle of the outer side surface of the U-shaped plate, and the motor shaft of the first motor is concentrically fixed to the driving gear.

[0011] Preferably, an L-shaped pressure block is fixed to the inner end of the limiting swing arm, a first screw rod is inserted in the middle of the L-shaped pressure block, the first pressure sensor is fixed to the bottom end of the first screw rod, and a pair of first nuts with threaded connections are sleeved on the first screw rod.

[0012] Preferably, a second screw rod is inserted into the top end of the positioning baffle, the second pressure sensor is fixed to the inner end of the second screw rod, and a pair of second nuts connected by threads are sleeved on the second screw rod.

[0013] Preferably, a rotatably connected fixed shaft is inserted in the middle of the bottom surface of the base plate, a concentrically fixed fixed disk is sleeved in the middle of the fixed shaft, four staggered oblique pin holes are opened on the bottom surface of the fixed disk, and a fixed pin shaft is fixed to the inner end of the bottom surface of each T-shaped skateboard, and the bottom end of each fixed pin shaft is slidably inserted in the corresponding oblique pin hole.

[0014] Preferably, a second swing arm is fixed to the bottom end of the fixed shaft, a second motor with the output end facing downward is fixed to the front of the base plate, a first swing arm is fixed to the motor shaft end of the second motor, and the first swing arm is connected to the second swing arm.

[0015] Preferably, an elliptical pin hole is provided at the outer section of the first swing arm, and a limiting pin is fixedly provided at the outer end of the second swing arm, and the limiting pin is slidably inserted into the elliptical pin hole.

[0016] Preferably, a U-shaped handle is installed on the outer side of the side panel, and a pair of fixing bolts are inserted at both ends of the bottom of the U-shaped handle, and the inner end of each fixing bolt is locked with the corresponding side panel thread.

[0017] The present invention also provides a monitoring method for a self-compacting concrete setting time monitoring device, comprising the following steps:

[0018] Step 1: Use the U-shaped handles to join the four side panels in a square shape, and make both sides of the L-shaped clamping plate fit into a pair of corresponding rectangular clamping grooves. Then, pour the self-compacting concrete on the middle of the top surface of the bottom plate to form a concrete block after pouring, and let it stand for a period of time.

[0019] Step 2: Synchronously start the four first motors. The motor shafts of the first motors drive the drive gears to rotate synchronously. The drive gears engage and drive the notched gear, the limit swing arm, the L-shaped pressure block, and the first pressure sensor to rotate, so that the pressure detection ends of the first pressure sensors are all against the top surface of the concrete block, and the pressure of the concrete block is measured and recorded by the first pressure sensors.

[0020] Step 3: Start the second motor. The motor shaft of the second motor drives the first swing arm to rotate synchronously. The elliptical pin hole on the first swing arm and the limit pin shaft on the second swing arm form a limit effect, driving the second swing arm, the fixed shaft, and the fixed plate to rotate.

[0021] Step 4: The oblique pin hole on the fixed plate and the fixed pin shaft on the T-shaped slide form a limiting effect, driving the T-shaped slide to slide inward along the T-shaped slide groove, and simultaneously driving the positioning baffle and the second pressure sensor to translate inward, so that the second pressure sensor passes through the tapered through hole on the corresponding side and rests on the side of the concrete block, and the pressure of the concrete block is measured and recorded by the second pressure sensor;

[0022] Step 5: Repeat the above steps at regular intervals to record the data, and judge the setting time of the self-compacting concrete based on the data information and the interval time measured by the first pressure sensor and the second pressure sensor, thereby monitoring the setting time of the self-compacting concrete.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the present invention, at regular intervals, a first pressure sensor and a second pressure sensor are pressed against the concrete block, and the setting time of the self-compacting concrete is determined based on the data information and the interval time measured by the first pressure sensor and the second pressure sensor, thereby monitoring the setting time of the self-compacting concrete;

[0025] 2. In the present invention, the pressure detection ends of the first pressure sensors are placed against the top surface of the concrete block, and the pressure of the concrete block is measured and recorded by the first pressure sensors, thereby improving the accuracy of the detection of the setting time of the top surface of the concrete block. The second pressure sensors are placed through the tapered through holes on the corresponding sides and against the side surfaces of the concrete block, and the pressure of the concrete block is measured and recorded by the second pressure sensors, thereby improving the accuracy of the detection of the setting time of the side surfaces of the concrete block.

[0026] In summary, the present invention solves the problem of inaccurate monitoring data of concrete setting time, and the overall structural design is compact, which not only facilitates all-round detection of concrete setting time, but also increases the accuracy of experimental data. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0030] Figure 3 For the present invention Figure 1 Schematic diagram of the decomposition;

[0031] Figure 4 This is a schematic diagram of the structural distribution of the bottom plate and four T-shaped slide plates of the present invention;

[0032] Figure 5 For the present invention Figure 4 Schematic diagram of the structure viewed from above;

[0033] Figure 6 Schematic diagram of the monitoring method of the present invention;

[0034] Serial numbers in the figure: 1. Bottom plate; 11. L-shaped pallet; 12. Side plate; 13. U-shaped handle; 14. Concrete block; 2. U-shaped plate; 21. Driving gear; 22. First motor; 23. Notched gear; 24. Limit swing arm; 25. L-shaped pressure block; 26. First screw rod; 27. First pressure sensor; 3. T-shaped slide; 31. Fixed plate; 32. Fixed pin; 33. Second motor; 34. First swing arm; 35. Second swing arm; 36. Limit pin; 37. Positioning baffle; 38. Second screw rod; 39. Second pressure sensor. Implementation Method

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Example 1: This example provides a self-compacting concrete setting time monitoring device, see Figure 1-5 Specifically, it includes a bottom plate 1, and four side plates 12 formed by splicing in a square shape are provided on the top surface of the bottom plate 1. Concrete blocks 14 are placed between the four side plates 12, and a tapered through hole is opened in the middle of the outer side surface of each side plate 12;

[0037] U-shaped plates 2 are fixedly provided at the four corners of the top surface of the base plate 1. A notched gear 23 is rotatably connected to the top of the opening of each U-shaped plate 2. A limiting swing arm 24 is fixedly provided in the notched portion of each notched gear 23. The inner end of each limiting swing arm 24 extends above the concrete block 14. A first pressure sensor 27 is installed at the inner end of each limiting swing arm 24. The pressure detection end of each first pressure sensor 27 is against the top surface of the concrete block 14, and the pressure of the concrete block 14 is measured and recorded by the first pressure sensor 27.

[0038] A T-shaped slide groove is provided in the middle of the four side edges of the bottom surface of the base plate 1. A slidably connected T-shaped slide plate 3 is engaged inside each T-shaped slide groove. A positioning baffle 37 is fixed to the outer end of each T-shaped slide plate 3. A second pressure sensor 39 is installed on the inner side of the top end of each positioning baffle 37. Each second pressure sensor 39 passes through the tapered through hole on the corresponding side and rests on the side of the concrete block 14. The pressure condition of the concrete block 14 is measured and recorded by the second pressure sensor 39.

[0039] In the specific implementation process, Figure 1 and Figure 3 As shown, a rotatably connected driving gear 21 is provided in the middle of the opening of the U-shaped plate 2, and the driving gear 21 is meshed with the notched gear 23. A first motor 22 is fixedly provided in the middle of the outer side surface of the U-shaped plate 2, and the motor shaft of the first motor 22 is concentrically fixed to the driving gear 21; the motor shaft of the first motor 22 drives the driving gear 21 to rotate synchronously, and the driving gear 21 meshes and drives the notched gear 23, the limiting swing arm 24, the L-shaped pressure block 25 and the first pressure sensor 27 to rotate.

[0040] In the specific implementation process, Figure 1 and Figure 3As shown, an L-shaped pressure block 25 is fixed to the inner end of the limiting swing arm 24, a first screw rod 26 is inserted into the middle of the L-shaped pressure block 25, and a first pressure sensor 27 is fixed to the bottom end of the first screw rod 26. A pair of first nuts connected by thread are sleeved on the first screw rod 26; by rotating the pair of first nuts, the position of the first screw rod 26 on the L-shaped pressure block 25 can be adjusted, thereby adjusting the distance between the first pressure sensor 27 and the concrete block 14;

[0041] A second screw rod 38 is inserted into the top end of the positioning baffle 37, and a second pressure sensor 39 is fixed to the inner end of the second screw rod 38. A pair of second nuts with threaded connections are sleeved on the second screw rod 38; by rotating the pair of second nuts, the position of the second screw rod 38 on the positioning baffle 37 can be adjusted, thereby adjusting the distance between the second pressure sensor 39 and the concrete block 14.

[0042] It should be noted that: in this embodiment, L-shaped card plates 11 are fixed on the inner side of the four corners of the top surface of the base plate 1, and rectangular card slots are opened at both ends of the side panels 12, and both sides of the L-shaped card plate 11 are clamped in the corresponding pair of rectangular card slots; a U-shaped handle 13 is installed on the outer side of the side panel 12, and a pair of fixing bolts are inserted at both ends of the bottom of the U-shaped handle 13, and the inner end of each fixing bolt is threadedly locked with the corresponding side panel 12; the four side panels 12 are spliced in a square shape through the U-shaped handle 13, and the two sides of the L-shaped card plate 11 are clamped in the corresponding pair of rectangular card slots.

[0043] Embodiment 2: In embodiment 1, there is still the problem that the four T-shaped slide plates 3 cannot be adjusted synchronously. Therefore, based on embodiment 1, this embodiment further includes:

[0044] In the specific implementation process, Figure 2 and Figure 5 As shown, a rotatably connected fixed shaft is inserted in the middle of the bottom surface of the base plate 1, and a concentrically fixed fixed disk 31 is sleeved in the middle of the fixed shaft. Four staggered oblique pin holes are opened on the bottom surface of the fixed disk 31. A fixed pin shaft 32 is fixed to the inner end of the bottom surface of each T-shaped slide plate 3, and the bottom end of each fixed pin shaft 32 is slidably inserted into the corresponding oblique pin hole; the oblique pin holes on the fixed disk 31 and the fixed pin shaft 32 on the T-shaped slide plate 3 form a limiting effect, driving the T-shaped slide plate 3 to slide inward along the T-shaped slide groove, and synchronously driving the positioning baffle 37 and the second pressure sensor 39 to translate inward;

[0045] A second swing arm 35 is fixedly provided at the bottom end of the fixed shaft, and a second motor 33 with the output end facing downward is fixedly provided on the front side of the base plate 1. A first swing arm 34 is fixedly provided at the end of the motor shaft of the second motor 33, and the first swing arm 34 is connected to the second swing arm 35; an elliptical pin hole is opened at the outer section of the first swing arm 34, and a limiting pin 36 is fixedly provided at the outer end of the second swing arm 35, and the limiting pin 36 is slidably inserted into the elliptical pin hole; the motor shaft of the second motor 33 drives the first swing arm 34 to rotate synchronously, and the elliptical pin hole on the first swing arm 34 and the limiting pin 36 on the second swing arm 35 form a limiting effect, driving the second swing arm 35, the fixed shaft and the fixed disk 31 to rotate.

[0046] Example 3: See Figure 6 Specifically, the working principle and operation method of the present invention are as follows:

[0047] Step 1: Use the U-shaped handles 13 to join the four side panels 12 in a square shape, and make sure both sides of the L-shaped clamping plate 11 are engaged in a pair of corresponding rectangular clamping grooves. Then, pour self-compacting concrete on the middle of the top surface of the bottom plate 1 to form a concrete block 14. Let it stand for a while.

[0048] Step 2: Synchronously start the four first motors 22. The motor shafts of the first motors 22 drive the drive gears 21 to rotate synchronously. The drive gears 21 engage and drive the notched gear 23, the limit swing arm 24, the L-shaped pressure block 25, and the first pressure sensor 27 to rotate, so that the pressure detection ends of the first pressure sensors 27 are all against the top surface of the concrete block 14. The pressure of the concrete block 14 is measured and recorded by the first pressure sensors 27.

[0049] Step 3: Start the second motor 33. The motor shaft of the second motor 33 drives the first swing arm 34 to rotate synchronously. The elliptical pin hole on the first swing arm 34 and the limit pin 36 on the second swing arm 35 form a limit effect, driving the second swing arm 35, the fixed shaft, and the fixed plate 31 to rotate.

[0050] In step 4, the oblique pin hole on the fixing plate 31 and the fixing pin shaft 32 on the T-shaped slide plate 3 form a limiting effect, driving the T-shaped slide plate 3 to slide inward along the T-shaped slide groove, and simultaneously driving the positioning baffle 37 and the second pressure sensor 39 to translate inward, so that the second pressure sensor 39 passes through the tapered through hole on the corresponding side and abuts against the side of the concrete block 14. The pressure of the concrete block 14 is measured and recorded by the second pressure sensor 39;

[0051] Step 5: Repeat the above steps at regular intervals to record the data, and judge the setting time of the self-compacting concrete based on the data information and the interval time measured by the first pressure sensor 27 and the second pressure sensor 39, so as to monitor the setting time of the self-compacting concrete.

[0052] The present invention solves the problem of inaccurate monitoring data of the setting time of concrete, and the overall structure is compactly designed, which not only facilitates all-round detection of the setting time of concrete, but also increases the accuracy of experimental data.

[0053] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A self-compacting concrete setting time monitoring device, comprising a base plate (1), characterized in that: Four side panels (12) formed by splicing together in a square shape are provided on the top surface of the bottom plate (1), concrete blocks (14) are placed between the four side panels (12), and a tapered through hole is opened in the middle of the outer side surface of each side panel (12); U-shaped plates (2) are fixedly provided at the four corners of the top surface of the bottom plate (1), a notched gear (23) is provided at the top of the opening of each U-shaped plate (2) for rotational connection, a limiting swing arm (24) is fixedly provided at the notch portion of each notched gear (23), the inner end portion of each limiting swing arm (24) extends above the concrete block (14), a first pressure sensor (27) is installed at the inner end portion of each limiting swing arm (24), and the pressure detection end of each first pressure sensor (27) is against the top surface of the concrete block (14); The bottom surface of the base plate (1) is provided with a T-shaped slot in the middle of the four side edges, and a slidingly connected T-shaped slide plate (3) is engaged inside each of the T-shaped slots, and a positioning baffle (37) is fixed to the outer end of each of the T-shaped slide plates (3), and a second pressure sensor (39) is installed on the inner side of the top end of each of the positioning baffle plates (37), and each of the second pressure sensors (39) passes through the tapered through hole on the corresponding side and abuts against the side of the concrete block (14); A rotatably connected fixed shaft is inserted in the middle of the bottom surface of the bottom plate (1), a concentrically fixed fixed disk (31) is sleeved in the middle of the fixed shaft, four staggered oblique pin holes are opened on the bottom surface of the fixed disk (31), and a fixed pin shaft (32) is fixed at the inner end of the bottom surface of each T-shaped slide plate (3), and the bottom end of each fixed pin shaft (32) is slidably inserted in the corresponding oblique pin hole; A rotatably connected driving gear (21) is provided in the middle of the opening of the U-shaped plate (2), and the driving gear (21) is meshedly connected with the notched gear (23). A first motor (22) is fixedly provided in the middle of the outer side surface of the U-shaped plate (2), and the motor shaft of the first motor (22) is concentrically fixedly connected to the driving gear (21).

2. The self-compacting concrete setting time monitoring device according to claim 1, characterized in that: L-shaped card plates (11) are fixedly provided on the inner side of the four corners of the top surface of the bottom plate (1), and rectangular card slots are provided at both ends of the side plates (12), and both sides of the L-shaped card plate (11) are engaged in a corresponding pair of rectangular card slots.

3. The self-compacting concrete setting time monitoring device according to claim 2, characterized in that: An L-shaped pressure block (25) is fixedly provided at the inner end of the limit swing arm (24), a first screw rod (26) is inserted into the middle of the L-shaped pressure block (25), the first pressure sensor (27) is fixedly provided at the bottom end of the first screw rod (26), and a pair of first nuts connected by thread are sleeved on the first screw rod (26).

4. The self-compacting concrete setting time monitoring device according to claim 3, characterized in that: A second screw rod (38) is inserted into the top end of the positioning baffle (37), the second pressure sensor (39) is fixed to the inner end of the second screw rod (38), and a pair of second nuts connected by thread are sleeved on the second screw rod (38).

5. The self-compacting concrete setting time monitoring device according to claim 4, characterized in that: A second swing arm (35) is fixedly provided at the bottom end of the fixed shaft, a second motor (33) with an output end facing downward is fixedly provided on the front surface of the bottom plate (1), a first swing arm (34) is fixedly provided at the motor shaft end of the second motor (33), and the first swing arm (34) is connected to the second swing arm (35).

6. The self-compacting concrete setting time monitoring device according to claim 5, characterized in that: An elliptical pin hole is provided on the outer section of the first swing arm (34), and a limiting pin shaft (36) is fixedly provided on the outer end portion of the second swing arm (35), wherein the limiting pin shaft (36) is slidably inserted into the elliptical pin hole.

7. The self-compacting concrete setting time monitoring device according to claim 6, characterized in that: A U-shaped handle (13) is installed on the outer side of the side panel (12), and a pair of fixing bolts are inserted at both ends of the bottom of the U-shaped handle (13), and the inner end of each fixing bolt is threadedly locked with the corresponding side panel (12).

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