A sampling device for detecting raw materials of concrete

Abstract

The utility model discloses a kind of sampling devices for concrete raw material detection, it is related to sampling device technical field, including base, fixedly installed with rotating pedestal and collection box on base, the top of rotating pedestal is movably connected with support frame, rotating pedestal is equipped with rotating motor, the output end of rotating motor is fixedly connected with support frame and penetrates rotating pedestal, further include lifting frame and be set on the sampling mechanism of lifting frame, lifting frame is slidably arranged on support frame, lifting mechanism for driving lifting frame lifting is equipped on support frame, sampling mechanism includes two half-cone cylinders that can constitute complete sampling cylinder and driving mechanism for two half-cone cylinders opening or closing;The utility model improves sampling safety, can flexibly adjust sampling height, satisfies the sampling demand of different specifications, different height tank car, enhances the versatility of device.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, specifically to a sampling device for testing concrete raw materials. Background Technology

[0002] Concrete is the only semi-finished material among building materials, and its special characteristics are self-evident. The raw materials (water, cement, aggregates, mineral admixtures, and additives) used in each batch of concrete are one of the most important factors in determining whether the semi-finished product meets the standards. At present, cement and mineral admixtures in commercial concrete plants are transported by bulk powder transport trucks. In order to ensure that the raw materials for the prepared concrete meet the standards, it is necessary to sample and inspect the raw materials loaded in the transport trucks.

[0003] During sampling, samples are usually taken at the top feed inlet of the tanker truck. However, since the powder tanker truck is quite tall, workers need to climb to the top of the truck to take samples. The sampling process is complicated and has certain risks. Therefore, a sampling device is needed to replace manual sampling. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device for testing concrete raw materials, which aims to solve the problem of relying on manual sampling in the above-mentioned background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sampling device for testing concrete raw materials, comprising a base, a rotating base and a collection box fixedly installed on the top of the base, a support frame movably connected to the top of the rotating base, a rotating motor fixedly connected inside the rotating base, the output end of the rotating motor passing through the rotating base and fixedly connected to the support frame, and further comprising a lifting frame and a sampling mechanism disposed on the lifting frame, the lifting frame being slidably disposed on the support frame, the support frame being provided with a lifting mechanism for driving the lifting frame to rise and fall, the sampling mechanism comprising two semi-conical cylinders that can form a complete sampling tube and a driving mechanism for opening or closing the two semi-conical cylinders, the two semi-conical cylinders being symmetrically arranged and having the same size and structure, the sampling tube having an open top and a tapered bottom.

[0006] Furthermore, the drive mechanism includes a mounting frame, a motor, a lead screw, a slider, and two sets of linkage mechanisms. The mounting frame is fixedly installed at the front end of the lifting frame. The lead screw is rotatably installed inside the mounting frame. The slider is threadedly connected to the outer wall of the lead screw and slidably connected to the inner side of the mounting frame. The motor is located at the top of the mounting frame, and its output end passes through the mounting frame and is fixedly connected to one end of the lead screw. The two sets of linkage mechanisms are located on the front and rear sides of the mounting frame and are connected between the slider and the two semi-conical cylinders.

[0007] Furthermore, the linkage mechanism includes two V-shaped connecting rods and two straight connecting rods. The middle parts of the two V-shaped connecting rods are hinged together and fixed to the outer side wall of the mounting frame. The upper ends of the two straight connecting rods are hinged together and fixed to the outer surface of the slider. The lower ends of the two straight connecting rods are respectively hinged to the upper ends of the two V-shaped connecting rods. The lower ends of the two V-shaped connecting rods are respectively fixedly connected to the two semi-conical cylinders.

[0008] Furthermore, the lifting mechanism includes a lifting motor, a lifting screw, and a nut seat. The support frame has an adjustment groove on the side near the lifting frame. The lifting screw is rotatably installed inside the adjustment groove. The lifting motor is fixedly installed on the top of the support frame and its output end is fixedly connected to one end of the lifting screw. The nut seat is threaded to the outside of the lifting screw and slides against the inner wall of the adjustment groove. The nut seat is fixedly connected to the lifting frame.

[0009] This utility model has the following beneficial effects: This utility model provides a sampling device for testing concrete raw materials, which effectively solves the problem of high safety hazards in traditional manual sampling and has the advantage of improving sampling safety. The opening and closing of the sampling tube can be precisely controlled by the drive mechanism. When closed, it can form a closed structure to ensure that the powder is not easily leaked during the sampling process. When opened, the sample can be quickly unloaded into the collection box, reducing sample residue and improving sampling efficiency. The lifting mechanism drives the lifting frame to rise and fall stably along the support frame, and the sampling height can be flexibly adjusted to meet the sampling needs of tank trucks of different specifications and heights, thus enhancing the versatility of the device. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the sampling mechanism in this utility model; Figure 3 This is a schematic diagram of the support frame and lifting mechanism in this utility model; In the diagram: 1. Base; 2. Rotating base; 3. Collection box; 4. Support frame; 5. Rotary motor; 6. Lifting frame; 7. Semi-cone; 8. Mounting frame; 9. Motor; 10. Lead screw; 11. Slider; 12. V-shaped connecting rod; 13. Straight connecting rod; 14. Lifting motor; 15. Lifting lead screw; 16. Nut seat. Detailed Implementation

[0011] like Figures 1 to 3As shown, a sampling device for testing concrete raw materials includes a base 1, a rotating base 2 and a collection box 3 fixedly mounted on the top of the base 1, a support frame 4 movably connected to the top of the rotating base 2, a rotary motor 5 fixedly connected inside the rotating base 2, and the output end of the rotary motor 5 passing through the rotating base 2 and fixedly connected to the support frame 4; it also includes a lifting frame 6 and a sampling mechanism disposed on the lifting frame 6, the lifting frame 6 being slidably disposed on the support frame 4, and the support frame 4 being provided with a lifting mechanism for driving the lifting frame 6 to rise and fall, the sampling mechanism including two components capable of forming a complete sampling system. The sampling tube has a semi-conical tube 7 and a drive mechanism for opening or closing the two semi-conical tubes 7. The two semi-conical tubes are symmetrically arranged and have the same size and structure. The top of the sampling tube is open and the bottom has a conical part. The support frame 4 can be driven to rotate around the rotating base 2 by the forward and reverse rotation of the rotary motor 5, thereby adjusting the horizontal orientation of the sampling mechanism to ensure that the sampling tube is accurately aligned with the sampling position such as the tank truck inlet. The lifting frame 6 moves vertically along the support frame 4 to control the sampling depth. The collection box 3 is used to store the sample. After the sampling tube is fully inserted into the raw material, the raw material enters the sampling tube through the top of the sampling tube.

[0012] The drive mechanism includes a mounting frame 8, a motor 9, a lead screw 10, a slider 11, and two sets of linkage mechanisms. The mounting frame 8 is fixedly installed at the front end of the lifting frame 6. The lead screw 10 is rotatably installed inside the mounting frame 8. The slider 11 is threaded to the outer wall of the lead screw 10 and slidably connected to the inner side of the mounting frame 8. The motor 9 is located at the top of the mounting frame 8, and its output end passes through the mounting frame 8 and is fixedly connected to one end of the lead screw 10. The two sets of linkage mechanisms are located on the front and rear sides of the mounting frame 8 respectively and are connected between the slider 11 and the two semi-conical cylinders 7. The mounting frame 8 is a rigid frame for supporting the drive components. The motor 9 drives the lead screw 10 to rotate, which is converted into the vertical linear motion of the slider 11. A groove is formed inside the mounting frame 8 to restrict the slider 11 to move only in the vertical direction, so as to avoid the radial wobble caused by the rotation of the lead screw 10 affecting the opening and closing accuracy of the semi-conical cylinders 7. The two sets of symmetrically distributed linkage mechanisms synchronously control the symmetrical opening and closing action of the two semi-conical cylinders 7 to ensure that the sampling cylinder forms a complete closed structure when closed, thus avoiding powder leakage.

[0013] The linkage mechanism includes two V-shaped connecting rods 12 and two straight connecting rods 13. The two V-shaped connecting rods 12 are hinged together at their middle parts and hinged to the outer wall of the mounting bracket 8. The upper ends of the two straight connecting rods 13 are hinged together and hinged to the outer surface of the slider 11. The lower ends of the two straight connecting rods 13 are respectively hinged to the upper ends of the two V-shaped connecting rods 12, and the lower ends of the two V-shaped connecting rods 12 are respectively fixedly connected to the two semi-conical cylinders 7. The hinged fixing refers to the rotatable connection between the components achieved by means of pins. Specifically, a bolt assembly with bushings can be used to ensure that each connecting rod... During the movement, the relative angle changes are kept stable. The bottom end of the V-shaped connecting rod 12 on the left is fixedly connected to the top end of the semi-conical cylinder 7 on the right, and the bottom end of the V-shaped connecting rod 12 on the right is fixedly connected to the top end of the semi-conical cylinder 7 on the left. When the slider 11 is at the initial height, the two semi-conical cylinders 7 are in a closed state, forming a complete sampling cylinder structure for insertion into the powder. When the slider 11 moves downward, the straight connecting rod 13 pushes the V-shaped connecting rod 12 to rotate around the hinge point, causing the two semi-conical cylinders 7 to open outward, unloading the powder sample inside the sampling cylinder into the collection box 3.

[0014] The lifting mechanism includes a lifting motor 14, a lifting screw 15, and a nut seat 16. The support frame 4 has an adjustment groove on the side near the lifting frame 6. The lifting screw 15 is rotatably installed inside the adjustment groove. The lifting motor 14 is fixedly installed on the top of the support frame 4 and its output end is fixedly connected to one end of the lifting screw 15. The nut seat 16 is threaded to the outside of the lifting screw 15 and slides against the inner wall of the adjustment groove. The nut seat 16 is fixedly connected to the lifting frame 6.

[0015] The specific operation process of this utility model is as follows: Fix the device base 1 on a stable surface next to the tank truck, ensuring that the collection box 3 is within the rotation radius of the sampling mechanism for easy unloading. Start the rotary motor 5 to drive the support frame 4 to rotate, so that the sampling cylinder of the sampling mechanism is aligned with the feed inlet on the top of the tank truck. After adjusting to a suitable horizontal position, turn off the rotary motor 5.

[0016] Start the lifting motor 14 of the lifting mechanism, control the lifting screw 15 to rotate forward, drive the nut seat 16 and the lifting frame 6 to move downward, so that the sampling cylinder of the sampling mechanism (at this time the half cone is in a closed state) gradually approaches the tank truck inlet. The height of the lifting frame 6 is precisely adjusted by the forward and reverse rotation of the lifting motor 14 until the bottom conical part of the sampling cylinder is aligned with the powder layer at the target depth, and then the lifting motor 14 is turned off.

[0017] In the initial state of the drive mechanism motor 9, the slider 11 is in a high position, and the two straight connecting rods 13 drive the V-shaped connecting rod 12 to be in a retracted state. The two semi-conical cylinders 7 close to form a complete sampling cylinder. The sampling cylinder is inserted into the powder under the drive of the lifting mechanism. The powder enters the sampling cylinder through the top opening. After the sampling cylinder is filled with sample, the lifting motor 14 is started again to control the lifting frame 6 to rise and pull the sampling cylinder out of the powder.

[0018] Start the rotary motor 5, drive the support frame 4 to rotate until the sampling mechanism is aligned with the collection box 3, turn off the rotary motor 5, start the motor 9 of the drive mechanism, drive the lead screw 10 to reverse, so that the slider 11 slides down along the slide groove inside the mounting frame 8; the slider 11 pushes the V-shaped connecting rod 12 to rotate around the hinge point on the mounting frame 8 through the straight connecting rod 13, forcing the two semi-conical cylinders 7 to open outward.

[0019] The sample inside the sampling tube falls into the collection box 3 from between the open semi-conical tubes 7 under the action of gravity, completing one sampling. After sampling, the drive mechanism motor 9 is controlled to rotate forward, causing the slider 11 to rise, and the semi-conical tubes 7 to close and restore the sampling tube state. If multiple samplings at different depths are required, the above steps can be repeated. After sampling, the lifting motor 14 and the rotary motor 5 are started to reset and clean the residual sample in the sampling tube and collection box.

Claims

1. A sampling device for testing concrete raw materials, comprising a base (1), wherein a rotating base (2) and a collection box (3) are fixedly installed on the top of the base (1), a support frame (4) is movably connected to the top of the rotating base (2), and a rotating motor (5) is fixedly connected inside the rotating base (2), wherein the output end of the rotating motor (5) passes through the rotating base (2) and is fixedly connected to the support frame (4), characterized in that: It also includes a lifting frame (6) and a sampling mechanism disposed on the lifting frame (6). The lifting frame (6) is slidably disposed on the support frame (4). The support frame (4) is provided with a lifting mechanism for driving the lifting frame (6) to rise and fall. The sampling mechanism includes two semi-conical tubes (7) that can form a complete sampling tube and a driving mechanism for opening or closing the two semi-conical tubes (7). The two semi-conical tubes are symmetrically arranged and have the same size and structure. The sampling tube has an open top and a tapered bottom.

2. The sampling device according to claim 1, characterized in that, The drive mechanism includes a mounting frame (8), a motor (9), a lead screw (10), a slider (11), and two sets of linkage mechanisms. The mounting frame (8) is fixedly installed at the front end of the lifting frame (6). The lead screw (10) is rotatably installed inside the mounting frame (8). The slider (11) is threadedly connected to the outer wall of the lead screw (10) and slidably connected to the inner side of the mounting frame (8). The motor (9) is located at the top of the mounting frame (8), and its output end passes through the mounting frame (8) and is fixedly connected to one end of the lead screw (10). The two sets of linkage mechanisms are located on the front and rear sides of the mounting frame (8) and are connected between the slider (11) and the two semi-conical cylinders (7).

3. The sampling device according to claim 2, characterized in that, The linkage mechanism includes two V-shaped links (12) and two straight links (13). The middle parts of the two V-shaped links (12) are hinged together and fixed to the outer side wall of the mounting frame (8). The upper ends of the two straight links (13) are hinged together and fixed to the outer surface of the slider (11). The lower ends of the two straight links (13) are respectively hinged to the upper ends of the two V-shaped links (12). The lower ends of the two V-shaped links (12) are respectively fixedly connected to the two semi-conical cylinders (7).

4. The sampling device according to claim 1, characterized in that, The lifting mechanism includes a lifting motor (14), a lifting screw (15), and a nut seat (16). The support frame (4) has an adjustment groove on the side near the lifting frame (6). The lifting screw (15) is rotatably installed inside the adjustment groove. The lifting motor (14) is fixedly installed on the top of the support frame (4) and its output end is fixedly connected to one end of the lifting screw (15). The nut seat (16) is threaded to the outside of the lifting screw (15) and slides against the inner wall of the adjustment groove. The nut seat (16) is fixedly connected to the lifting frame (6).

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