A device for detecting the slump of cement

Abstract

The utility model discloses a device for detecting cement collapse degree, solved the collapse degree through observation and the problem that the collapse area is obtained, and the detection result precision is not good, it includes detection platform and collection box, the detection platform is installed on the collection box, is equipped with the shaping cleaning subassembly on the collection box, is equipped with the rotary drive part between the detection platform and the collection box, and the top of detection platform is equipped with the collapse state detection subassembly, and the collapse state detection subassembly includes multiple annular grooves coaxially opened in the top of detection platform, and the diameter of multiple annular grooves is increasing from small to big, and the inside movable mounting of annular groove has movable ring, the utility model discloses, in the work, through setting multiple movable rings on the detection platform set, through the average speed that the spread to each movable ring position when the cement collapse, draw corresponding collapse speed curve, thereby reflect the flowability of cement and the collapse degree, make the collapse degree detection more accurate.

Description

Technical Field

[0001] This utility model belongs to the field of cement testing technology, specifically a device for detecting cement slump. Background Technology

[0002] According to the patent document with authorization announcement number "CN221199686U" and invention title "A Cement Mortar Slump Detection Device for Building Engineering", the description states that in use, firstly, the driving cylinder pushes the support plate and the mortar injection cylinder downwards, with the telescopic guide column providing support and guidance, until the mortar injection cylinder is pushed against the detection platform. Then, the cement mortar to be tested is poured into the mortar injection cylinder, and the cement mortar in the mortar injection cylinder is compacted with the help of external tools. Then, the driving cylinder pulls the mortar injection cylinder upwards, causing the mortar injection cylinder to detach from the cement mortar. The slump of the cement mortar is detected by observing the degree of collapse, including the size of the collapsed area. However, the following defects still exist:

[0003] Firstly, visual inspection is used to detect the degree of collapse, but the accuracy is poor. Secondly, the aforementioned collapse degree detection also detects the size of the collapsed area, making it inconvenient to detect the collapse rate, which further reduces the accuracy of the collapse degree detection. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a device for detecting cement slump, which effectively solves the problem that the accuracy of the detection results is poor when the slump is obtained by observation and slump area.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for detecting cement slump, comprising a detection platform and a collection box, wherein the detection platform is installed on the collection box, a shaping and cleaning component is installed on the collection box, a rotation drive component is installed between the detection platform and the collection box, and a slump state detection component is installed on the top of the detection platform.

[0006] The collapse state detection component includes multiple annular grooves coaxially formed at the top of the detection platform. The diameters of the multiple annular grooves increase equally from small to large. A movable ring is movably installed inside the annular groove. A pressure-bearing inclined surface is formed at the top of the movable ring. The bottom end of the pressure-bearing inclined surface is inclined downward toward the axis of the annular groove and is flush with the surface of the detection platform. A support spring is installed at an equal angle at the bottom end of the movable ring. A pressure sensor is installed at the bottom end of the support spring and is installed on the inner bottom wall of the annular groove.

[0007] Preferably, the rotation drive includes a rotating shaft rotatably connected to the collection box, a driven gear is fixedly installed at one end of the rotating shaft, a driving gear is meshed below the driven gear, the driving gear is fixedly connected to the output shaft of the drive motor, and the drive motor is fixedly installed on the collection box.

[0008] Preferably, the shaping and cleaning assembly includes a mounting frame disposed above the testing platform, a sliding frame fixedly mounted on one side of the collection box, the bottom end of the mounting frame slidably mounted inside the sliding frame, a cylinder mounted on the top end of the mounting frame, and a shaping component connected to the output end of the cylinder.

[0009] Preferably, a screw is rotatably mounted inside the sliding frame, the screw is threadedly connected to the mounting bracket, one end of the screw is fixedly connected to the output shaft of the servo motor, and the servo motor is fixedly mounted on the sliding frame.

[0010] Preferably, an air pump is installed on the mounting bracket, and a connecting hose is installed at the air outlet of the air pump.

[0011] Preferably, the shaping component includes a conical cover disposed below the mounting frame, a top tube installed at the top of the conical cover, the bottom diameter of the top tube being smaller than the diameter of the smallest movable ring, and a connecting frame installed at the top of the conical cover, the connecting frame being fixedly connected to the output end of the cylinder.

[0012] Preferably, a fixed cylinder is fixedly installed at the top of the connecting frame, a limit block is movably installed inside the fixed cylinder, a pressure rod is fixedly installed at the bottom of the pressure rod, a pressure plate is fixedly installed at the bottom of the pressure rod, a return spring is installed at the bottom of the limit block, a magnetic block is installed on the limit block, and an electromagnet is installed at the top of the fixed cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In operation, multiple movable rings are set on the test platform. The average speed at which the cement spreads to each movable ring position when it collapses is used to plot the corresponding collapse speed curve, thereby reflecting the fluidity and slump of the cement, making the slump detection more accurate.

[0015] During operation, the cone-shaped hood can initially plasticize the cement, facilitating subsequent collapse operations. After connecting the hose to the top pipe, the testing platform rotates to a vertical position, and the air pump can blow air to clean the inner wall of the cone-shaped hood and the surface of the testing platform, making it convenient for subsequent use. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the structure of a device for detecting the slump of cement according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the pre-cleaning component of this utility model;

[0020] Figure 3 This is a schematic diagram of the shaping component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the testing platform structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the movable ring structure of this utility model.

[0023] In the diagram: 1. Detection platform; 2. Collection box; 3. Shaping and cleaning assembly; 301. Mounting bracket; 302. Sliding bracket; 303. Screw; 304. Servo motor; 305. Air pump; 306. Connecting hose; 307. Cylinder; 308. Shaping component; 3081. Conical cover; 3082. Top tube; 3083. Connecting bracket; 3084. Pressure plate; 3085. Fixing cylinder; 3086. Limiting block; 3087. Pressure rod; 3088. Return spring; 3089. Magnetic block; 30810. Electromagnet; 4. Driven gear; 5. Driving gear; 6. Drive motor; 7. Collapse state detection assembly; 701. Annular groove; 702. Movable ring; 703. Pressure inclined surface; 704. Support spring; 705. Pressure sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Depend on Figure 1-5 The present invention relates to a device for detecting the slump of cement, comprising a detection platform 1 and a collection box 2. The detection platform 1 is installed on the collection box 2, and a shaping and cleaning component 3 is installed on the collection box 2. A rotation drive component is installed between the detection platform 1 and the collection box 2, and a slump state detection component 7 is installed on the top of the detection platform 1.

[0026] The collapse state detection component 7 includes multiple annular grooves 701 coaxially formed at the top of the detection platform 1. The diameters of the multiple annular grooves 701 increase equally from small to large. A movable ring 702 is movably installed inside the annular groove 701. A pressure-bearing inclined surface 703 is formed at the top of the movable ring 702. The bottom end of the pressure-bearing inclined surface 703 is inclined downward toward the axis of the annular groove 701 and is flush with the surface of the detection platform 1. A support spring 704 is installed at an equal angle at the bottom end of the movable ring 702. A pressure sensor 705 is installed at the bottom end of the support spring 704. The pressure sensor 705 is installed on the inner bottom wall of the annular groove 701. Multiple movable rings 702 are set on the detection platform 1. By measuring the average speed at which the cement spreads to each movable ring 702 position when it collapses, a corresponding collapse speed curve is plotted, thereby reflecting the fluidity and collapse degree of the cement, making the collapse degree detection more accurate.

[0027] The rotation drive includes a rotating shaft that is rotatably connected to the collection box 2. A driven gear 4 is fixedly installed at one end of the rotating shaft. A driving gear 5 is meshed below the driven gear 4. The driving gear 5 is fixedly connected to the output shaft of the drive motor 6. The drive motor 6 is fixedly installed on the collection box 2.

[0028] The shaping and cleaning assembly 3 includes a mounting bracket 301 disposed above the testing platform 1, a sliding bracket 302 fixedly mounted on one side of the collection box 2, the bottom end of the mounting bracket 301 being slidably mounted inside the sliding bracket 302, a cylinder 307 mounted on the top end of the mounting bracket 301, a shaping component 308 connected to the output end of the cylinder 307, a screw 303 being rotatably mounted inside the sliding bracket 302, the screw 303 being threadedly connected to the mounting bracket 301, one end of the screw 303 being fixedly connected to the output shaft of the servo motor 304, and the servo motor 304 being fixedly mounted on the sliding bracket 302.

[0029] An air pump 305 is installed on the mounting bracket 301, and a connecting hose 306 is installed at the air outlet of the air pump 305.

[0030] The shaping component 308 includes a conical cover 3081 disposed below the mounting bracket 301. A top tube 3082 is mounted on the top of the conical cover 3081. The bottom diameter of the top tube 3082 is smaller than the diameter of the minimum movable ring 702. A connecting bracket 3083 is mounted on the top of the conical cover 3081. The connecting bracket 3083 is fixedly connected to the output end of the cylinder 307. A fixing cylinder 3085 is fixedly mounted on the top of the connecting bracket 3083. A limit block 3086 is movably mounted inside the fixing cylinder 3085. A pressure rod 3087 is fixedly mounted on the bottom end of the pressure rod 3087. A pressure plate 3084 is fixedly installed at the bottom of 087, a return spring 3088 is installed at the bottom of the limiting block 3086, a magnetic block 3089 is installed on the limiting block 3086, and an electromagnet 30810 is installed at the top of the fixed cylinder 3085. The conical cover 3081 can perform preliminary plasticization on the cement during use, which facilitates the subsequent collapse operation. At the same time, after the connecting hose 306 is connected to the top pipe 3082, the detection platform 1 is rotated to a vertical position. The air pump 305 can blow air to clean the inner wall of the conical cover 3081 and the surface of the detection platform 1, which is convenient for subsequent use.

[0031] Working principle: In the original state, the mounting frame 301 is in the center of the sliding frame 302, so that the conical cover 3081 and the annular groove 701 are coaxially set. At this time, the cylinder 307 is opened, and the output end of the cylinder 307 moves downward until the bottom wall of the conical cover 3081 is in close contact with the surface of the detection platform 1. Then, cement is put into the conical cover 3081 from the top tube 3082. After the cement is put in, the electromagnet 30810 is energized, which generates a repulsive force on the magnetic block 3089, causing the pressure plate 3084 to move downward. After the pressure plate 3084 enters the top tube 3082, it squeezes the cement inside the conical cover 3081 and compacts the cement.

[0032] Then the electromagnet 30810 is disconnected, causing the pressure plate 3084 to move back under the elastic force of the return spring 3088. Then the cylinder 307 pulls the conical cover 3081 upward to separate it from the cement. When the cement loses the support of the conical cover 3081, the cement will collapse downward.

[0033] As the cement collapses downwards, it spreads from the innermost movable ring 702 towards the outermost movable ring 702. When the cement reaches the innermost movable ring 702, it exerts pressure on the pressure-bearing inclined surface 703 at the top of the movable ring 702, causing the movable ring 702 to move downwards along the annular groove 701. This compresses the support spring 704, and the pressure sensor 705 senses the increased pressure, indicating that the cement has now spread to the innermost movable ring 702. The spread time t1 and the radius r1 of the innermost annular groove 701 are recorded... The spread time tn and the corresponding radius rn of the annular groove 701 at each position of the annular groove 701 are recorded sequentially. Finally, the following is calculated:

[0034] The average velocity v1 = r1 / t1 extending to the first annular groove at position 701;

[0035] The average velocity extending to position 701 of the second annular groove is v2 = r2 / t2;

[0036] ...

[0037] The average velocity vn = rn / tn as it spreads to position 701 of the nth annular groove;

[0038] The collapse rate curves are plotted using v1, v2...vn to reflect the fluidity of cement, and thus reflect the slump of cement.

[0039] After the test is completed, one end of the connecting hose 306 is connected to the top tube 3082, and then the drive motor 6 is turned on to drive the drive gear 5 to rotate. Then, the driven gear 4 drives the test platform 1 to rotate 90 degrees to a vertical position. Then the air pump 305 is turned on, so that air is continuously blown down from the top tube 3082. On the one hand, the cement adhering to the inner wall of the conical cover 3081 is blown into the collection box 2. On the other hand, the servo motor 304 drives the mounting bracket 301 to move along the sliding frame 302, so that after the air is blown out of the conical cover 3081, the cement adhering to the surface of the test platform 1 is blown into the collection box 2.

Claims

1. A device for detecting cement slump, comprising a detection platform (1) and a collection box (2), characterized in that: The detection platform (1) is installed on the collection box (2), the collection box (2) is equipped with a shaping and cleaning component (3), a rotation drive is installed between the detection platform (1) and the collection box (2), and a collapse state detection component (7) is installed on the top of the detection platform (1). The collapse state detection component (7) includes multiple annular grooves (701) coaxially formed at the top of the detection platform (1). The diameters of the multiple annular grooves (701) increase equally from small to large. A movable ring (702) is movably installed inside the annular groove (701). A pressure-bearing inclined surface (703) is formed at the top of the movable ring (702). The bottom end of the pressure-bearing inclined surface (703) is inclined downward toward the axis of the annular groove (701), and the bottom end of the pressure-bearing inclined surface (703) is flush with the surface of the detection platform (1). A support spring (704) is installed at an equal angle at the bottom end of the movable ring (702). A pressure sensor (705) is installed at the bottom end of the support spring (704). The pressure sensor (705) is installed on the inner bottom wall of the annular groove (701).

2. The device for detecting cement slump according to claim 1, characterized in that: The rotating drive includes a rotating shaft that is rotatably connected to the collection box (2). A driven gear (4) is fixedly installed at one end of the rotating shaft. A driving gear (5) is meshed below the driven gear (4). The driving gear (5) is fixedly connected to the output shaft of the drive motor (6). The drive motor (6) is fixedly installed on the collection box (2).

3. The device for detecting cement slump according to claim 1, characterized in that: The shaping and cleaning component (3) includes a mounting bracket (301) disposed above the testing platform (1), a sliding bracket (302) fixedly mounted on one side of the collection box (2), the bottom end of the mounting bracket (301) being slidably mounted inside the sliding bracket (302), and a cylinder (307) mounted on the top end of the mounting bracket (301), with the output end of the cylinder (307) connected to a shaping component (308).

4. The device for detecting cement slump according to claim 3, characterized in that: A screw (303) is rotatably mounted inside the sliding frame (302). The screw (303) is threadedly connected to the mounting frame (301). One end of the screw (303) is fixedly connected to the output shaft of the servo motor (304). The servo motor (304) is fixedly mounted on the sliding frame (302).

5. The device for detecting cement slump according to claim 3, characterized in that: An air pump (305) is installed on the mounting bracket (301), and a connecting hose (306) is installed at the air outlet of the air pump (305).

6. The device for detecting cement slump according to claim 3, characterized in that: The shaping component (308) includes a conical cover (3081) disposed below the mounting bracket (301). A top tube (3082) is installed at the top of the conical cover (3081). The bottom diameter of the top tube (3082) is smaller than the diameter of the minimum movable ring (702). A connecting bracket (3083) is installed at the top of the conical cover (3081). The connecting bracket (3083) is fixedly connected to the output end of the cylinder (307).

7. The device for detecting cement slump according to claim 6, characterized in that: A fixed cylinder (3085) is fixedly installed at the top of the connecting frame (3083). A limit block (3086) is movably installed inside the fixed cylinder (3085). A pressure rod (3087) is fixedly installed at the bottom of the pressure rod (3087). A pressure plate (3084) is fixedly installed at the bottom of the pressure rod (3087). A return spring (3088) is installed at the bottom of the limit block (3086). A magnetic block (3089) is installed on the limit block (3086). An electromagnet (30810) is installed at the top of the fixed cylinder (3085).

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