A concrete quality detection device for hydraulic engineering and its usage method

Abstract

The present invention discloses a device for detecting the quality of concrete in a water conservancy project and its usage method, including a detection platform and a slump cone placed at the upper end of the detection platform. Above the detection platform and on one side of the slump cone, there is a lifting plate. A second distance sensor is fixedly installed at the lower end of the lifting plate. The upper end of the detection platform is connected to a lifting assembly connected to the lifting plate. At the upper end of the lifting plate and at the corresponding position of the slump cone, two vertical plates are fixedly connected. This device can fill the slump cone with concrete layers in three times. After each filling of the concrete layer, the second motor drives the rotating rod and the first bevel gear to drive the ram to rotate step by step. During the step-by-step rotation process, the distance between the ram and the axis of the rotating rod is gradually shortened. At the same time, the first bevel gear meshes with the second bevel gear to drive the cam to rotate one week, realizing uniform ramming from the outside to the inside to replace manual ramming and improve the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and in particular to a device for detecting the quality of concrete in water conservancy projects and a method for using the same. Background Technique

[0002] In the construction of water conservancy projects, concrete is an important material for construction. The quality of concrete is an important indicator for building qualified water conservancy projects. One of the inspection items for detecting the quality of concrete is the detection of the slump of concrete. The slump of concrete mainly refers to the plasticizing performance and pumpability of concrete. The existing slump test method is to use a slump bucket with a small upper opening and a large lower opening in the shape of a horn. The concrete is filled three times, and after each filling of concrete, a tamper needs to be used to tamp and level it evenly from the inside to the outside along the barrel wall. After the barrel is pulled out, the concrete will slump due to its own weight. The height of the barrel minus the height of the highest point of the concrete after slumping can be used to obtain the slump. The existing method is to manually use a tamper to tamp evenly, which is time-consuming and laborious, and the detection efficiency is low.

[0003] Therefore, we propose a device for detecting the quality of concrete in water conservancy projects and a method for using the same to solve the above problems. Summary of the Invention

[0004] The present invention aims to provide a device for detecting the quality of concrete in water conservancy projects and a method for using the same to solve the problems raised in the background technique.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for detecting the quality of concrete in a water conservancy project and its usage method, including a detection platform and a slump cone placed at the upper end of the detection platform. Above the detection platform and on one side of the slump cone, there is a lifting plate. A second distance sensor is fixedly installed at the lower end of the lifting plate. The upper end of the detection platform is connected to a lifting component that is connected to the lifting plate. At the upper end of the lifting plate and corresponding to the slump cone, two vertical plates are fixedly connected. On the opposite sides of the two vertical plates, a cross plate is fixedly connected. On the opposite sides of the two vertical plates, chutes are symmetrically opened. The two chutes jointly slidably connect a sliding plate. A spring is fixedly connected between the inner bottom ends of each chute and the sliding plate. A second motor is fixedly installed at the lower end of the sliding plate. The second motor is a bi-axial motor. The lower output end of the second motor is fixedly connected to a rotating rod. The lower end of the rotating rod penetrates through the lifting plate and is fixedly connected to a multi-stage telescopic rod. A slot is opened in the rotating rod. The upper and lower inner walls of the slot are rotatably connected to a second threaded rod. A nut seat is threadedly connected to the second threaded rod, and the nut seat is slidably connected to the slot. The nut seat is hinged to a connecting rod. The other end of the connecting rod is hinged to a tamping hammer, and the tamping hammer is fixedly connected to the telescopic end of the multi-stage telescopic rod. A first spur gear is coaxially fixedly connected to the second threaded rod. The first spur gear meshes with a second spur gear, and the upper end of the second spur gear is coaxially fixedly connected to a gear shaft, and the upper end of the gear shaft is fixedly connected to the lower end of the lifting plate. The upper output end of the second motor is fixedly connected to a first bevel gear. A through hole is opened at the upper end of the first bevel gear. The first bevel gear meshes with a second bevel gear. The second bevel gear is coaxially fixedly connected to a cam through a rotating shaft. A cage is fixedly connected between the rotating shaft and the through hole.

[0007] Preferably, the slump cone is formed by butting two half cones. Two telescopic devices are symmetrically and fixedly installed at the upper end of the detection platform. The telescopic end of each telescopic device is fixedly connected to the corresponding half cone.

[0008] Preferably, the lifting component includes a first threaded rod rotatably connected to the upper end of the detection platform and a guide rod fixedly connected to the upper end of the detection platform. A first motor for driving the first threaded rod is embedded at the upper end of the detection platform. The lifting plate is sleeved on the first threaded rod and the guide rod.

[0009] Preferably, a first distance sensor is fixedly installed between the first threaded rod and the guide rod at the upper end of the detection platform. Scale lines are engraved on the guide rod.

[0010] Preferably, the multi-stage telescopic rod includes an inner and outer sequentially sliding sleeve rod, a first cylinder, and a second cylinder. A tension spring is fixedly connected between the inner wall of the second cylinder and one end of the rod.

[0011] Preferably, a reinforcing plate is fixedly connected between the multi-stage telescopic rod and the rotating rod.

[0012] Preferably, the diameter of the first spur gear is smaller than that of the second spur gear, and the diameter of the first bevel gear is larger than that of the second bevel gear.

[0013] A method for using a device for detecting the quality of concrete in a water conservancy project, characterized by comprising the following steps:

[0014] S1, use a telescopic device to dock two half barrels to form a slump barrel.

[0015] S2, conduct the first filling of concrete into the slump barrel, with the filling height being h1. Use the lifting assembly to make the rammer fall above the first-filled concrete. The second motor simultaneously drives the rotating rod and the first bevel gear step by step, continuously changing the orientation in the circumferential direction, and at the same time driving the cam to rotate during the engagement with the second bevel gear to continuously tamp the concrete layer. At the same time, drive the second threaded rod to rotate under the engagement of the first spur gear and the second spur gear, and the nut seat drives the rammer to tamp evenly from the outside to the inside through the connecting rod.

[0016] S3, conduct the second filling of concrete into the slump barrel, with the filling height being h2. Before this, use the lifting assembly to make the rammer fall above the second-filled concrete, and reverse the drive of the second motor to reset the rammer to a position close to the inner wall of the slump barrel, and conduct the same even tamping from the outside to the inside as in S2.

[0017] S4, conduct the third filling of concrete into the slump barrel, with the filling height being h3. Before this, use the lifting assembly to make the rammer fall above the third-filled concrete, and reverse the drive of the second motor to reset the rammer to a position close to the inner wall of the slump barrel, and conduct the same even tamping from the outside to the inside as in S2.

[0018] S5, use a telescopic device to separate the two half barrels, measure the height after slumping, the height after slumping is h4, and the slump of the concrete can be calculated through the values of h3 and h4.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This device can fill the concrete layer into the slump barrel in three times. After each filling of the concrete layer, the second motor drives the rotating rod and the first bevel gear to drive the rammer to rotate step by step. During the step-by-step rotation process, at the same time, gradually shorten the distance between the rammer and the axis of the rotating rod. At the same time, the first bevel gear engages with the second bevel gear to drive the cam to rotate one week, realizing uniform tamping from the outside to the inside to replace manual tamping and improve the detection efficiency. Description of the Drawings

[0021] Figure 1 It is a structural sectional view of the front view of a device for detecting the quality of concrete in a water conservancy project proposed by the present invention;

[0022] Figure 2 is Figure 1 a schematic structural diagram of a partial enlargement in

[0023] Figure 3 is Figure 1 a schematic structural diagram of an enlargement at position A in

[0024] Figure 4 is Figure 1 a schematic top - view structural diagram at the slump bucket in

[0025] In the figure: 1 slump bucket, 2 detection platform, 3 first threaded rod, 4 guide rod, 5 first motor, 6 first distance sensor, 7 lifting plate, 8 vertical plate, 9 horizontal plate, 10 chute, 11 sliding plate, 12 spring, 13 second motor, 14 rotating rod, 15 slotted opening, 16 second threaded rod, 17 first spur gear, 18 second spur gear, 19 gear shaft, 20 nut seat, 21 connecting rod, 22 rammer, 23 multi - stage telescopic rod, 24 first bevel gear, 25 second bevel gear, 26 cam, 27 cage, 28 second distance sensor, 29 half - bucket, 30 telescopic device. Specific embodiments

[0026] 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.

[0027] Referring to Figures 1-4 , a concrete quality detection device for water conservancy projects includes a detection platform 2 and a slump bucket 1 placed on the upper end of the detection platform 2. The slump bucket 1 is formed by docking two half - buckets 29. Two telescopic devices 30 are symmetrically and fixedly installed on the upper end of the detection platform 2, and the telescopic ends of each telescopic device 30 are fixedly connected to the corresponding half - bucket 29. The two telescopic devices 30 can drive the two half - buckets 29 to dock to form the slump bucket 1, or drive the two half - buckets 29 to separate so that the filled concrete is separated from the inner wall of the slump bucket 1, and it is convenient to measure the height of the concrete.

[0028] Above the detection platform 2 and on one side of the slump bucket 1, there is a lifting plate 7. A second distance sensor 28 is fixedly installed at the lower end of the lifting plate 7. The second distance sensor 28 is signal - connected to a controller, which can detect the height of the concrete in the slump bucket 1 in real time for three - time filling.

[0029] At the upper end of the detection platform 2, there is a lifting component connected to the lifting plate 7. Specifically, the lifting component includes a first threaded rod 3 rotatably connected to the upper end of the detection platform 2 and a guide rod 4 fixedly connected to the upper end of the detection platform 2. A first motor 5 for driving the first threaded rod 3 is embedded in the upper end of the detection platform 2. The lifting plate 7 is sleeved on the first threaded rod 3 and the guide rod 4. By restricting the movement of the lifting plate 7 in two directions, the first motor 5 can drive the first threaded rod 3 to drive the lifting plate 7 sleeved on the first threaded rod 3 and the guide rod 4 to move up and down in the vertical direction.

[0030] A first distance sensor 6 is fixedly installed between the first threaded rod 3 and the guide rod 4 at the upper end of the detection platform 2. Scale lines are engraved on the guide rod 4. The first distance sensor 6 is also connected to the controller, and the lifting height of the lifting plate 7 can be known in real time to control the height of the rammer 22. The scale lines are used as an auxiliary.

[0031] At the upper end of the lifting plate 7 and at the corresponding position of the slump bucket 1, two vertical plates 8 are fixedly connected. A cross plate 9 is fixedly connected to the opposite sides of the two vertical plates 8. Sliding grooves 10 are symmetrically opened on the opposite sides of the two vertical plates 8. A sliding plate 11 is slidably connected to the two sliding grooves 10 together. A spring 12 is fixedly connected to the inner bottom end of each sliding groove 10 and the sliding plate 11 together. The spring 12 is provided to enable the sliding plate 11 to slide and reset in the vertical direction.

[0032] A second motor 13 is fixedly installed at the lower end of the sliding plate 11. The second motor 13 is a double-shaft motor and is a stepper drive. The lower output end of the second motor 13 is fixedly connected to a rotating rod 14. The lower end of the rotating rod 14 penetrates through the lifting plate 7 and is fixedly connected to a multi-stage telescopic rod 23. A reinforcing plate is fixedly connected between the multi-stage telescopic rod 23 and the rotating rod 14 to strengthen the stability of the connection of the multi-stage telescopic rod 23.

[0033] Specifically, the multi-stage telescopic rod 23 includes an inner and outer sequentially sliding sleeve rod, a first cylinder, and a second cylinder. A tension spring is fixedly connected between the inner wall of the second cylinder and one end of the rod. When the nut seat 20 moves up and down on the second threaded rod 16, the overall length of the multi-stage telescopic rod 23 is gradually shortened through the connecting rod 21.

[0034] A slot 15 is formed in the rotating rod 14. The upper and lower inner walls of the slot 15 are rotatably connected with a second threaded rod 16. A nut seat 20 is threadedly connected to the second threaded rod 16, and the nut seat 20 is slidably connected to the slot 15. The nut seat 20 is hinged with a connecting rod 21. The other end of the connecting rod 21 is hinged with a rammer 22, and the rammer 22 is fixedly connected to the telescopic end of the multi-stage telescopic rod 23. The rammer 22 is restricted by the multi-stage telescopic rod 23 so that it can only move in the horizontal direction. The rising nut seat 20 can drive the rammer 22 to move towards the axis direction of the rotating rod 14 through the connecting rod 21, so that the rammer 22 gradually moves towards the axis direction of the rotating rod 14 during the step-by-step circular rotation, realizing uniform ramming from the outside to the inside.

[0035] A first straight gear 17 is coaxially and fixedly connected to the second threaded rod 16. The first straight gear 17 meshes with a second straight gear 18, and the upper end of the second straight gear 18 is coaxially and fixedly connected with a gear shaft 19, and the upper end of the gear shaft 19 is fixedly connected to the lower end of the lifting plate 7. During the process that the first straight gear 17 is driven to rotate in a circle, it meshes with the second straight gear 18 to drive the second threaded rod 16 to rotate by itself.

[0036] The upper output end of the second motor 13 is fixedly connected with a first bevel gear 24. A through hole is formed in the upper end of the first bevel gear 24. The first bevel gear 24 meshes with a second bevel gear 25. The second bevel gear 25 is coaxially and fixedly connected with a cam 26 through a rotating shaft, and a cage 27 is fixedly connected between the rotating shaft and the through hole. Under the action of the cage 27, the relative position relationship between the first bevel gear 24 and the second bevel gear 25 is maintained. During the process that the first bevel gear 24 meshes with the second bevel gear 25, due to dimensional relationships, the cam 26 will rotate one week to drive structures such as the second motor 13 and the rammer 22 to perform a single ramming.

[0037] The diameter of the first straight gear 17 is smaller than that of the second straight gear 18 to drive the first straight gear 17 and the second threaded rod 16 to rotate. The diameter of the first bevel gear 24 is larger than that of the second bevel gear 25, and the concrete layer is rammed while the rammer 22 rotates a step angle.

[0038] This device can fill the concrete layer into the slump cone 1 in three times. After each filling of the concrete layer, the second motor 13 drives the rotating rod 14 and the first bevel gear 24 to drive the rammer 22 to rotate step by step. During the step-by-step rotation process, the distance between the rammer 22 and the axis of the rotating rod 14 is gradually shortened at the same time. At the same time, the first bevel gear 24 meshes with the second bevel gear 25 to drive the cam 26 to rotate one week, realizing uniform ramming from the outside to the inside to replace manual ramming and improve the detection efficiency.

[0039] A method for using a concrete quality detection device for a water conservancy project includes the following steps:

[0040] S1. Merge the two half barrels 29 into a slump barrel 1 through the telescopic device 30;

[0041] S2. Conduct the first concrete filling into the slump barrel 1 to a filling height of h1. Lower the rammer 22 above the first filled concrete through the lifting assembly. At the same time, the second motor 13 step - by - step drives the rotating rod 14 and the first bevel gear 24 to continuously change the orientation in the circumferential direction. Meanwhile, when engaging with the second bevel gear 25, it drives the cam 26 to rotate to continuously tamp the concrete layer. At the same time, under the meshing of the first spur gear 17 and the second spur gear 18, it drives the second threaded rod 16 to rotate, and the nut seat 20 drives the rammer 22 to tamp evenly from the outside to the inside through the connecting rod 21;

[0042] S3. Conduct the second concrete filling into the slump barrel 1 to a filling height of h2. Before that, lower the rammer 22 above the second filled concrete through the lifting assembly, and reverse - drive the second motor 13 to reset the rammer 22 to a position close to the inner wall of the slump barrel 1, and conduct the same even tamping from the outside to the inside as in S2;

[0043] S4. Conduct the third concrete filling into the slump barrel 1 to a filling height of h3. Before that, lower the rammer 22 above the third filled concrete through the lifting assembly, and reverse - drive the second motor 13 to reset the rammer 22 to a position close to the inner wall of the slump barrel 1, and conduct the same even tamping from the outside to the inside as in S2;

[0044] S5. Separate the two half barrels 29 through the telescopic device 30, measure the height after slumping, and the height after slumping is h4. The slump of the concrete can be calculated through the values of h3 and h4.

[0045] The above h1, h2, and h3 are respectively one - third, two - thirds, and three - thirds of the height of the slump barrel 1. Fill the concrete in three times and tamp and compact it in batches for slump detection.

[0046] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A device for detecting the quality of concrete in a water conservancy project, characterized in that: It includes a detection platform (2) and a slump bucket (1) placed on the upper end of the detection platform (2). Above the detection platform (2) and on one side of the slump bucket (1), there is a lifting plate (7). A second distance sensor (28) is fixedly installed at the lower end of the lifting plate (7). The upper end of the detection platform (2) is connected to a lifting assembly that is connected to the lifting plate (7). At the upper end of the lifting plate (7) and at the corresponding position of the slump bucket (1), two vertical plates (8) are fixedly connected. A cross plate (9) is fixedly connected to the opposite sides of the two vertical plates (8). Slide grooves (10) are symmetrically formed on the opposite sides of the two vertical plates (8). A slide plate (11) is slidably connected to the two slide grooves (10) together. Springs (12) are fixedly connected to the inner bottom ends of the respective slide grooves (10) and the slide plate (11). A second motor (13) is fixedly installed at the lower end of the slide plate (11). The second motor (13) is a double-shaft motor. The lower output end of the second motor (13) is fixedly connected to a rotating rod (14). The lower end of the rotating rod (14) penetrates through the lifting plate (7) and is fixedly connected to a multi-stage telescopic rod (23). A slot (15) is formed in the rotating rod (14). A second threaded rod (16) is rotatably connected to the upper and lower inner walls of the slot (15). A nut seat (20) is threadedly connected to the second threaded rod (16), and the nut seat (20) is slidably connected to the slot (15). The nut seat (20) is hinged to a connecting rod (21). The other end of the connecting rod (21) is hinged to a rammer (22), and the rammer (22) is fixedly connected to the telescopic end of the multi-stage telescopic rod (23). A first straight gear (17) is coaxially fixedly connected to the second threaded rod (16). The first straight gear (17) meshes with a second straight gear (18), and an upper end of the second straight gear (18) is coaxially fixedly connected to a gear shaft (19), and the upper end of the gear shaft (19) is fixedly connected to the lower end of the lifting plate (7). The upper output end of the second motor (13) is fixedly connected to a first bevel gear (24). A through hole is formed in the upper end of the first bevel gear (24). The first bevel gear (24) meshes with a second bevel gear (25). The second bevel gear (25) is coaxially fixedly connected to a cam (26) through a rotating shaft. A cage (27) is fixedly connected between the rotating shaft and the through hole.

2. The concrete quality inspection device for water conservancy projects according to claim 1, characterized in that: The slump bucket (1) is formed by butting two half buckets (29). Two telescopic devices (30) are symmetrically fixedly installed at the upper end of the detection platform (2). The telescopic end of each telescopic device (30) is fixedly connected to the corresponding half bucket (29).

3. The concrete quality inspection device for a water conservancy project according to claim 1, characterized in that: The lifting assembly includes a first threaded rod (3) rotatably connected to the upper end of the detection platform (2) and a guide rod (4) fixedly connected to the upper end of the detection platform (2). A first motor (5) for driving the first threaded rod (3) is embedded in the upper end of the detection platform (2). The lifting plate (7) is sleeved on the first threaded rod (3) and the guide rod (4).

4. The concrete quality detection device for a water conservancy project according to claim 3, characterized in that: A first distance sensor (6) is fixedly installed between the first threaded rod (3) and the guide rod (4) at the upper end of the detection platform (2), and scale lines are engraved on the guide rod (4).

5. The concrete quality inspection device for a water conservancy project according to claim 1, wherein: The multi-stage telescopic rod (23) includes a rod, a first cylinder, and a second cylinder that are sequentially sleeved and slid inside and outside, and a tension spring is fixedly connected between the inner wall of the second cylinder and one end of the rod.

6. The concrete quality inspection device for a water conservancy project according to claim 1, characterized in that: A reinforcing plate is fixedly connected between the multi-stage telescopic rod (23) and the rotating rod (14).

7. The concrete quality inspection device for water conservancy projects according to claim 1, characterized in that: The diameter of the first straight gear (17) is smaller than that of the second straight gear (18), and the diameter of the first bevel gear (24) is larger than that of the second bevel gear (25).

8. A method for using the water conservancy project concrete quality detection device according to claim 2, characterized in that: It includes the following steps: S1, use the telescopic device (30) to dock and combine the two half barrels (29) into a slump barrel (1); S2, perform the first concrete filling into the slump barrel (1), with the filling height being h1. Use the lifting assembly to make the rammer (22) fall above the first filled concrete. The second motor (13) simultaneously drives the rotating rod (14) and the first bevel gear (24) step by step, continuously changing the orientation in the circumferential direction. At the same time, drive the cam (26) to rotate during the engagement with the second bevel gear (25) to continuously tamp the concrete layer. At the same time, drive the second threaded rod (16) to rotate under the engagement of the first straight gear (17) and the second straight gear (18), and the nut seat (20) drives the rammer (22) to tamp evenly from the outside to the inside through the connecting rod (21); S3, perform the second concrete filling into the slump barrel (1), with the filling height being h2. Before this, use the lifting assembly to make the rammer (22) fall above the second filled concrete, and reverse drive the second motor (13) to reset the rammer (22) to a position close to the inner wall of the slump barrel (1), and perform the same even tamping from the outside to the inside as in S2; S4, perform the third concrete filling into the slump barrel (1), with the filling height being h3. Before this, use the lifting assembly to make the rammer (22) fall above the third filled concrete, and reverse drive the second motor (13) to reset the rammer (22) to a position close to the inner wall of the slump barrel (1), and perform the same even tamping from the outside to the inside as in S2; S5, use the telescopic device (30) to separate the two half barrels (29), measure the height after slumping, and the height after slumping is h4. The slump of the concrete can be calculated through the values of h3 and h4.

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