Concrete slump testing device

Abstract

The utility model relates to the technical field of concrete detection, in particular to a concrete slump testing device which comprises a bottom frame, a measuring mechanism arranged on the lower side of the bottom frame, a measuring cylinder arranged at the bottom end of the bottom frame, a blanking hopper arranged above the measuring cylinder, and a cleaning mechanism for cleaning residual concrete on the inner wall of the measuring cylinder. The concrete slump testing device has the beneficial effects that when the slump of concrete is tested and detected, a plurality of cleaning brushes in the cleaning assembly are used for sequentially and rotationally cleaning and brushing the inner wall of the measuring cylinder from top to bottom, and then a water spraying structure is used for cleaning and brushing the concrete and spraying water at the same time, so that the cleaning strength on the concrete is increased; the vibration structure is used for driving a plurality of striking columns to rotate and collide with a plurality of convex blocks on the inner wall of the discharging hopper, so that the discharging hopper drives the measuring cylinder to vibrate, falling of cleaned concrete is facilitated, the cleaning efficiency of the measuring cylinder is improved, and the accuracy of measured data when the measuring cylinder is used for measurement again is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, and in particular to a concrete slump test device. Background Technology

[0002] The concrete slump test measures the height of a concrete mixture as it falls under its own weight. It is an important indicator of the performance of concrete mixtures and a crucial test reflecting their workability. The concrete slump meter is the main testing equipment for the concrete slump test, and other auxiliary tools such as a tamping rod, two steel rulers, and a base plate are also required.

[0003] By comparing a concrete slump testing device with patent publication number CN220603471U, it was found that in this design, residual concrete particles may adhere to the inner wall of the slump cylinder after the slump test. Consequently, this device cannot quickly clean the inner wall of the slump cylinder after the slump test, and the concrete will slowly solidify on the inner wall of the slump cylinder, causing certain difficulties for subsequent cleaning. If the concrete on the inner wall of the slump cylinder is not cleaned properly, it may affect the data measured in the next slump test, reducing the accuracy of the measurement data. Utility Model Content

[0004] The purpose of this invention is to provide a concrete slump testing device in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A concrete slump testing device includes a base frame, a measuring mechanism disposed on the lower side of the base frame, a measuring cylinder disposed at the bottom end of the base frame, a feeding hopper disposed above the measuring cylinder, and a cleaning mechanism for cleaning residual concrete on the inner wall of the measuring cylinder, the cleaning mechanism being located on the upper side of the base frame.

[0007] The cleaning mechanism includes a lifting plate that is vertically movable above the base frame, a cleaning assembly for cleaning the inner wall of the measuring cylinder, and a lifting assembly for driving the cleaning assembly to move up and down.

[0008] The cleaning assembly includes a tamping rod positioned below the lifting plate. A first fixing sleeve is fixed to the lower end of the tamping rod. Multiple sliding blocks are slidably mounted on the side wall of the first fixing sleeve. A compression spring connects the sliding blocks to the first fixing sleeve. The end of the sliding block away from the tamping rod is arc-shaped. Multiple cleaning brushes are fixed to the end of the sliding block away from the tamping rod. The cleaning brushes are elastically set. A water spraying structure is provided above the first fixing sleeve. A vibration structure is provided at the upper end of the tamping rod. An adjustment structure for adjusting the position of the tamping rod is provided above the tamping rod.

[0009] Preferably, the water spraying structure includes a water tank located above the first fixed sleeve, the water tank being fixedly connected to the tamping rod, multiple water spray heads being installed on the side wall of the water tank, and a water inlet being provided at the upper end of the water tank, with a cap threadedly connected to the upper end of the water inlet.

[0010] Preferably, the vibration structure includes a second fixed sleeve fixedly mounted on the upper end of the tamping rod, a plurality of striking columns slidably mounted on the side wall of the second fixed sleeve, a return spring connecting the striking columns and the second fixed sleeve, the end of the striking column away from the tamping rod being arc-shaped, and a plurality of protrusions fixedly mounted around the upper side of the inner wall of the hopper, the end of the protrusion away from the inner wall of the hopper being arc-shaped, and the protrusions slidingly engaging with the striking columns.

[0011] Preferably, the adjustment structure includes a rotating frame rotatably mounted at the lower end of the lifting plate, a tamping rod slidably mounted inside the rotating frame, a telescopic cylinder between the upper end of the tamping rod and the inner wall of the rotating frame, and a rotary motor mounted on the rotating end of the rotating frame.

[0012] Preferably, the lifting assembly includes two symmetrically arranged L-shaped connecting plates fixed to the upper end of the base frame. An upper lead screw and an upper sliding rod are respectively provided on the inner wall of the two L-shaped connecting plates. The upper sliding rod is fixedly connected to the L-shaped connecting plate, and the upper lead screw is rotatably connected to the L-shaped connecting plate. A lifting motor is installed at the rotating end of the upper lead screw, and the lifting plate is slidably installed between the two L-shaped connecting plates.

[0013] Preferably, magnetic rings are provided at the bottom of the hopper and the top of the measuring cylinder, and the two magnetic rings attract each other.

[0014] Compared with existing technologies, the beneficial effects are as follows:

[0015] When testing the slump of concrete, multiple cleaning brushes within the cleaning assembly are used to sequentially rotate and clean the inner wall of the measuring cylinder from top to bottom. A water spraying structure is then used to clean the concrete while simultaneously spraying water, increasing the cleaning intensity. When the measuring cylinder reaches its highest point, a vibration structure drives multiple impact columns to rotate and collide with multiple protrusions on the inner wall of the hopper. This causes the hopper to vibrate, facilitating the descent of the cleaned concrete and improving the cleaning efficiency of the measuring cylinder. This ensures the accuracy of the measurement data when the measuring cylinder is used again. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a three-dimensional spatial view of the concrete slump testing device described in this utility model;

[0018] Figure 2 This is a schematic diagram of the measuring mechanism of the concrete slump test device described in this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal structure of the cleaning structure of the concrete slump test device described in this utility model;

[0020] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0021] Figure 5 yes Figure 3 A magnified view of a section at point B in the middle;

[0022] Figure 6 This is a schematic diagram of the cleaning mechanism of the concrete slump test device described in this utility model.

[0023] The annotations in the attached figures are explained as follows:

[0024] 100. Base frame; 201. Upper lead screw; 202. Lifting motor; 203. Lifting plate; 204. Rotary motor; 205. Rotating frame; 206. Telescopic cylinder; 207. Tamping rod; 208. First fixed sleeve; 209. Sliding block; 210. Cleaning brush; 211. Water tank; 212. Spray head; 213. Second fixed sleeve; 214. Striking column; 215. Protrusion; 216. Upper sliding rod; 301. Lower lead screw; 302. Moving motor; 303. Lifting block; 304. Clamping cylinder; 305. Clamping seat; 306. Clamping plate; 307. Lower sliding rod; 400. Measuring cylinder; 500. Discharge hopper; 600. Magnetic ring. Detailed Implementation

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-6As shown, a concrete slump testing device includes a base frame 100, a measuring mechanism for measuring the slump of concrete, the measuring mechanism being located below the base frame 100, a measuring cylinder 400 being provided at the bottom end of the base frame 100, a hopper 500 being provided above the measuring cylinder 400, and a cleaning mechanism for cleaning residual concrete on the inner wall of the measuring cylinder 400, the cleaning mechanism being located above the base frame 100.

[0028] In this embodiment: the measuring mechanism includes two symmetrical lower lead screws 301 and lower slide rods 307 disposed on the inner wall of the base frame 100. The lower slide rods 307 are fixedly connected to the base frame 100, and the lower lead screws 301 are rotatably connected to the base frame 100. Lifting blocks 303 are provided on the lower sides of both the lower lead screws 301 and the lower slide rods 307. The lifting blocks 303 are slidably connected to the lower slide rods 307 and threadedly connected to the lower lead screws 301. A clamping cylinder 304 is provided at one end of the lifting block 303 near the measuring cylinder 400, and a clamping seat 305 is provided at one end of the clamping cylinder 304 near the measuring cylinder 400. The clamping seat 305 is rotatably mounted with [missing information - likely related to clamping mechanisms]. A torsion spring connects the rotating end of clamping plate 306 to clamping seat 305. Anti-slip pads are fixed on the side wall of clamping plate 306. A moving motor 302 is installed on the rotating end of lower screw 301. Magnetic rings 600 are provided at the bottom of hopper 500 and the top of measuring cylinder 400. The two magnetic rings 600 attract each other, driving two clamping cylinders 304 to move the two clamping plates 306 on the two clamping seats 305 toward the measuring cylinder 400, so that the two clamping plates 306 clamp and fix the measuring cylinder 400, preventing the measuring cylinder 400 from shaking during the experiment, and ensuring the stable upward movement of the measuring cylinder 400, thus improving the accuracy of the measurement data.

[0029] In this embodiment, the cleaning mechanism includes a cleaning component for cleaning the inner wall of the measuring cylinder 400 and a lifting component for driving the cleaning component to rise and fall.

[0030] The lifting assembly includes two symmetrically arranged L-shaped connecting plates fixed to the upper end of the base frame 100. An upper lead screw 201 and an upper slide rod 216 are respectively provided on the inner wall of the two L-shaped connecting plates. The upper slide rod 216 is fixedly connected to the L-shaped connecting plates, and the upper lead screw 201 is rotatably connected to the L-shaped connecting plates. A lifting motor 202 is installed at the rotating end of the upper lead screw 201. A lifting plate 203 is slidably installed between the two L-shaped connecting plates.

[0031] The cleaning assembly includes a tamping rod 207 positioned below the lifting plate 203. A first fixing sleeve 208 is fixed to the lower end of the tamping rod 207. Multiple sliding blocks 209 are slidably mounted on the side wall of the first fixing sleeve 208. A compression spring connects the sliding blocks 209 to the first fixing sleeve 208. The end of the sliding block 209 away from the tamping rod 207 is arc-shaped. Multiple cleaning brushes 210 are fixed to the end of the sliding block 209 away from the tamping rod 207. The cleaning brushes 210 are elastically set. A water spraying structure is provided above the first fixing sleeve 208. A vibration structure is provided at the upper end of the tamping rod 207. An adjustment structure for adjusting the position of the tamping rod 207 is provided above the tamping rod 207.

[0032] The water spraying structure includes a water tank 211 located above the first fixed sleeve 208. The water tank 211 is fixedly connected to the tamping rod 207. Multiple water spray heads 212 are installed on the side wall of the water tank 211. The upper end of the water tank 211 is provided with a water inlet, and a cap is threadedly connected to the upper end of the water inlet.

[0033] The vibration structure includes a second fixed sleeve 213 fixedly mounted on the upper end of the tamping rod 207. Multiple striking columns 214 are slidably mounted on the side wall of the second fixed sleeve 213. A return spring is connected between the striking column 214 and the second fixed sleeve 213. The end of the striking column 214 away from the tamping rod 207 is arc-shaped. Multiple protrusions 215 are fixedly mounted around the upper side of the inner wall of the hopper 500. The end of the protrusion 215 away from the inner wall of the hopper 500 is arc-shaped. The protrusion 215 and the striking column 214 are slidably engaged.

[0034] The adjustment structure includes a rotating frame 205 rotatably mounted at the lower end of the lifting plate 203, a tamping rod 207 slidably mounted inside the rotating frame 205, a telescopic cylinder 206 between the upper end of the tamping rod 207 and the inner wall of the rotating frame 205, and a rotary motor 204 mounted on the rotating end of the rotating frame 205. When testing the slump of concrete, multiple cleaning brushes 210 in the cleaning assembly are used to rotate and clean the inner wall of the measuring cylinder 400 from top to bottom. Water is sprayed while the concrete is being cleaned using a water spraying structure, which increases the cleaning force of the concrete. When the measuring cylinder 400 moves to the top, a vibration structure drives multiple striking columns 214 to rotate and collide with multiple protrusions 215 on the inner wall of the hopper 500, causing the hopper 500 to drive the measuring cylinder 400 to vibrate. This helps the cleaned concrete fall, improves the cleaning efficiency of the measuring cylinder 400, and ensures the accuracy of the measurement data when the measuring cylinder 400 is used again.

[0035] Working principle: First, the hopper 500 is placed on the upper end of the measuring cylinder 400. The two magnetic rings 600 at the upper end of the measuring cylinder 400 and the lower end of the hopper 500 attract each other, fixing the hopper 500 to the upper end of the measuring cylinder 400. Then, the two clamping cylinders 304 are driven to move the two clamping plates 306 on the two clamping seats 305 towards the measuring cylinder 400, clamping and fixing the measuring cylinder 400. Then, the worker pours concrete into the hopper 500, and then the lifting motor 2 is driven. 02 drives the upper screw 201 to rotate, which in turn drives the lifting plate 203 to move down, causing the tamping rod 207 to move down into the measuring cylinder 400 and insert it into the concrete. Then, the rotary motor 204 drives the rotating frame 205 to rotate, which in turn drives the telescopic cylinder 206 to move the tamping rod 207 horizontally back and forth to adjust the position of the tamping rod 207. Then, the lifting plate 203 drives the tamping rod 207 to move up and down, so that the tamping rod 207 can tamp the concrete from all directions and better expel the air bubbles inside the concrete.

[0036] After tamping is completed, the lifting plate 203 drives the tamping rod 207 to move upward and reset. Then, the driving motor 302 drives the lower screw 301 to rotate, thereby causing the two clamping plates 306 to move the clamped measuring cylinder 400 upward, pouring the concrete inside the measuring cylinder 400 downward. Then, the worker uses a ruler to test the slump of the concrete.

[0037] After the test, the two clamping plates 306 continue to move the measuring cylinder 400 upwards, causing the multiple cleaning brushes 210 inside the first fixed sleeve 208 to retract inside the measuring cylinder 400. Then, the rotary motor 204 drives the tamping rod 207 to rotate again, which in turn drives the multiple cleaning brushes 210 inside the first fixed sleeve 208 to rotate. Utilizing the telescopic properties of the multiple cleaning brushes 210, the concrete on the inner wall of the measuring cylinder 400 is cleaned sequentially from top to bottom. Finally, the multiple water spray heads 212 at the lower end of the water tank 211 spray water from the water tank 211. After the water source inside 11 is pumped out, water is sprayed onto the concrete during cleaning, which increases the cleaning power of the concrete. When the measuring cylinder 400 moves to the top, the rotation of the tamping rod 207 drives multiple striking columns 214 to rotate. The striking columns 214 collide with multiple protrusions 215 on the inner wall of the discharge hopper 500, causing the discharge hopper 500 to drive the measuring cylinder 400 to vibrate. This helps the cleaned concrete fall, improves the cleaning efficiency of the measuring cylinder 400, and ensures the accuracy of the measurement data when the measuring cylinder 400 is used for measurement again.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A concrete slump testing device, comprising a base frame (100), a measuring mechanism disposed on the lower side of the base frame (100), a measuring cylinder (400) disposed at the bottom end of the base frame (100), and a feeding hopper (500) disposed above the measuring cylinder (400), characterized in that: It also includes a cleaning mechanism for cleaning residual concrete on the inner wall of the measuring cylinder (400), the cleaning mechanism being located on the upper side of the base frame (100); The cleaning mechanism includes a lifting plate (203) that is movably disposed above the base frame (100), a cleaning assembly for cleaning the inner wall of the measuring cylinder (400), and a lifting assembly for driving the cleaning assembly to move up and down; The cleaning assembly includes a tamping rod (207) disposed below the lifting plate (203). A first fixing sleeve (208) is fixed to the lower end of the tamping rod (207). Multiple sliding blocks (209) are slidably installed on the side wall of the first fixing sleeve (208). A compression spring is connected between the sliding block (209) and the first fixing sleeve (208). The end of the sliding block (209) away from the tamping rod (207) is arc-shaped. Multiple cleaning brushes (210) are fixed to the end of the sliding block (209) away from the tamping rod (207). The cleaning brushes (210) are elastically arranged. A water spraying structure is provided above the first fixing sleeve (208). A vibration structure is provided at the upper end of the tamping rod (207). An adjustment structure for adjusting the position of the tamping rod (207) is provided above the tamping rod (207).

2. The concrete slump testing device according to claim 1, characterized in that: The water spray structure includes a water tank (211) disposed above the first fixed sleeve (208), the water tank (211) is fixedly connected to the tamping rod (207), a plurality of water spray heads (212) are installed on the side wall of the water tank (211), and a water inlet is provided at the upper end of the water tank (211), and a cap is threadedly connected to the upper end of the water inlet.

3. The concrete slump testing device according to claim 2, characterized in that: The vibration structure includes a second fixed sleeve (213) fixedly disposed on the upper end of the tamping rod (207). Multiple striking columns (214) are slidably disposed on the side wall of the second fixed sleeve (213). A return spring is connected between the striking column (214) and the second fixed sleeve (213). The end of the striking column (214) away from the tamping rod (207) is arc-shaped. Multiple protrusions (215) are fixedly disposed around the upper side of the inner wall of the hopper (500). The end of the protrusion (215) away from the inner wall of the hopper (500) is arc-shaped. The protrusion (215) and the striking column (214) slide in cooperation.

4. The concrete slump testing device according to claim 3, characterized in that: The adjustment structure includes a rotating frame (205) rotatably disposed at the lower end of the lifting plate (203), a tamping rod (207) slidably installed inside the rotating frame (205), a telescopic cylinder (206) is provided between the upper end of the tamping rod (207) and the inner wall of the rotating frame (205), and a rotary motor (204) is installed at the rotating end of the rotating frame (205).

5. The concrete slump testing device according to claim 4, characterized in that: The lifting assembly includes two symmetrically arranged L-shaped connecting plates fixed to the upper end of the base frame (100). An upper lead screw (201) and an upper slide rod (216) are respectively provided on the inner wall of the two L-shaped connecting plates. The upper slide rod (216) is fixedly connected to the L-shaped connecting plate. The upper lead screw (201) is rotatably connected to the L-shaped connecting plate. A lifting motor (202) is installed at the rotating end of the upper lead screw (201). The lifting plate (203) is slidably installed between the two L-shaped connecting plates.

6. The concrete slump testing device according to claim 5, characterized in that: The bottom of the hopper (500) and the top of the measuring cylinder (400) are both provided with magnetic rings (600), and the two magnetic rings (600) attract each other.

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