Concrete sampling device for civil engineering

Abstract

The utility model discloses a concrete sampling device for civil engineering, which comprises a shell, a sampling mechanism, a driving mechanism and a mould box, the side wall of the shell is provided with a feed port, the shell is connected with the sampling mechanism at the feed port, the sampling mechanism is used for extracting concrete slurry and guiding the concrete slurry into the mould box, and the sampling mechanism comprises a feed pipe. A material guide pipe is connected below the rear end of the feeding pipe; the driving mechanism comprises a sampling assembly and a rotating assembly; a plurality of sampling grooves are formed in the mold box, the sampling grooves are used for containing concrete samples, and the rotating assembly comprises a ratchet wheel; the die box is arranged below the driving mechanism, a center column is arranged in the center of the bottom of the die box, a plurality of ratchets are arranged on the outer side of the center column, springs are arranged between the ratchets and the side wall of the center column, and the center column is meshed with the ratchet wheel through the ratchets. The sampling device can control the sampling point and the sampling amount, reduces errors in the sampling process, improves the sampling consistency, and improves the accuracy and reliability of concrete quality testing.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete manufacturing equipment technical field especially relates to a high strength conveying scraper. BACKGROUND

[0002] Concrete is a paste material mixed by cement, sand, gravel and water, which is easy to harden into a hard solid in natural state. It is widely used in construction, road, bridge and various infrastructure construction. High-quality concrete has good compression resistance, wear resistance, fire resistance, corrosion resistance and other properties, and the ratio of each raw material in the concrete and the construction process have great influence on its final performance, so sampling is often needed in concrete production to test the performance of the concrete.

[0003] The commonly used concrete sampling method in production is to take out the paste sample from the mixing tank by artificial, and then store it in the mold box, wait for the paste to solidify, the whole process needs artificial, time-consuming and laborious, low working efficiency, poor working environment, easy to appear human caused error, and in order to ensure the reliability of test results, the weight and shape of the sample should be consistent as far as possible, which increases the difficulty of sampling.

[0004] Through retrieval, the Chinese invention patent with publication number CN 111141557 B discloses a kind of concrete automatic sampling cleaning device, including storage hopper and test block mold, the sidewall of the storage hopper is connected with material taking mechanism, the material taking mechanism is connected with power mechanism, the test block mold is located below material taking mechanism, and scraping mechanism is installed on material taking mechanism.Storage hopper is used to store concrete, material taking mechanism is used to sample concrete in storage hopper and fall into test block mold, power mechanism is used to provide power for the automatic sampling device, and scraping mechanism is used to scrape concrete in test block mold.The device discharges, and the discharge hole cannot be aligned with each cavity of the test block mold, so it is necessary to push concrete into the test block mold by the scraping mechanism, but this cannot guarantee the uniform distribution of concrete, so the formed concrete block sample may have differences, resulting in inaccurate test results;And, the concrete paste in different positions of mixing equipment may have differences in uniformity and tamping degree, and the sampling part of the device is single, so the test results may have accidental errors. UTILITY MODEL CONTENTS

[0005] In view of the above prior art, the utility model provides a concrete sampling device for civil engineering, and the main technical problem to be solved is how to reduce the error in the sampling process.

[0006] To achieve the above object, the technical scheme of the utility model embodiment is as follows: a concrete sampling device for civil engineering, including shell, sampling mechanism, drive mechanism, mould box, the lateral wall of shell is equipped with feed inlet, the shell is connected with sampling mechanism at feed inlet, sampling mechanism is used for drawing concrete paste and imports mould box, sampling mechanism includes feed pipe, the lower end of feed pipe rear end is connected with the material guiding pipe, drive mechanism includes sampling assembly and rotating assembly, feed pipe draws concrete paste through sampling assembly, rotating assembly is used for driving mould box rotation, a plurality of sampling grooves are set up on mould box, sampling groove is used for containing concrete sample, rotating assembly includes ratchet wheel, mould box is arranged below drive mechanism, the central part of mould box bottom is equipped with center column, the outside of center column is equipped with a plurality of ratchet teeth, ratchet tooth is rotatably connected with center column, and spring is arranged between the lateral wall of ratchet tooth and center column, center column is engaged with ratchet wheel through ratchet tooth, and mould box is driven center column rotation through ratchet wheel.

[0007] Further, the sampling assembly includes an air cylinder and a gear, one end of the air cylinder is connected to the feed pipe, the air cylinder is internally and slidably connected to a piston, the piston is connected to a telescopic rod on a side away from the feed pipe, a strip-shaped through hole is formed in the rear end of the telescopic rod, the strip-shaped through hole is formed in a vertical direction, a rack is formed on a side wall of the telescopic rod within the strip-shaped through hole, and the rack is engaged with the gear.

[0008] Further, the drive mechanism further includes a motor, a connecting shaft is arranged at the lower end of the output shaft of the motor, and the gear and the ratchet wheel are fixedly connected to both ends of the connecting shaft.

[0009] Further, the mould box is provided with a plurality of partition plates from the center column to the side wall.

[0010] Further, a rubber ring is arranged below the mould box.

[0011] Further, the lateral wall of the shell is provided with a lifting door, and the top of the shell is provided with a turnover cover.

[0012] Further, a magnet two is arranged at the center of the bottom of the shell, a magnet one is arranged below the mould box, the positions of the magnet one and the magnet two correspond to each other, and the magnetic poles at the top end of the magnet two and the magnetic poles at the bottom end of the magnet one are different.

[0013] The utility model has the advantages that:

[0014] 1. The gear drives the rotation of the mould box, the outlet of the feed pipe is always aligned with each chamber of the mould box, the amount of concrete paste entering each chamber can be controlled by controlling the sampling assembly during each sampling, the consistency of sampling is improved, and the accuracy and reliability of testing are improved; the concrete paste is introduced from the mixing equipment through the feed pipe, the sampling position of the feed pipe can be freely arranged, multi-point sampling is realized, and accidental errors are excluded.

[0015] 2, by setting rubber ring below the mold box, increase the friction between the mold box and the bottom of the shell, increase the stability of the mold box, ensure that the gear reverse rotation, the mold box will not rotate, in turn ensure that the material guide pipe to each chamber can only be discharged once;

[0016] 3, by setting sampling assembly, can after the amount of concrete slurry into the mold box up to standard, the excess slurry in the feeding pipe back to the mixing device, avoid the slurry in the feeding pipe gathered too much, cause the feeding pipe blockage, and simple operation, reduce the maintenance difficulty;

[0017] 4, by setting the magnet two in the bottom of the shell center, and setting magnet one below the mold box corresponding position, increase the stability of the mold box and shell connection, avoid the device when the impact, the mold box will move dislocation, with the material guide pipe or gear column can not be connected, improve the stability of the device, reduce the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a front view of a concrete sampling device for civil engineering in embodiment 1 of the present application;

[0019] Figure 2 is a front view of a concrete sampling device for civil engineering in embodiment 1 of the present application;

[0020] Figure 3 is a front view of a concrete sampling device for civil engineering in embodiment 1 of the present application;

[0021] Figure 4 is a front view of a concrete sampling device for civil engineering in embodiment 1 of the present application;

[0022] Figure 5 is a front view of a concrete sampling device for civil engineering in embodiment 1 of the present application;

[0023] Figure 6 is a front view of a concrete sampling device for civil engineering in embodiment 2 of the present application.

[0024] BRIEF DESCRIPTION OF DRAWINGS: 1 shell, 2 feeding pipe, 3 mold box, 4 center column, 5 magnet one, 6 magnet two, 7 rubber pad, 8 telescopic rod, 9 rack, 10 piston, 11 gear, 12 ratchet, 13 motor, 14 material guide pipe, 15 ratchet, 16 spring, 17 partition plate, 18 lifting door, 19 turnover cover, 20 air cylinder. DETAILED DESCRIPTION

[0025] The technical solutions of the utility model are further described in detail below in combination with the drawings and specific embodiments. Unless otherwise defined, all the technical and scientific terms used in the present document have the same meanings as commonly understood by the person skilled in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. In the following description, the expression "some embodiments" describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0026] It should be further noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "inner", "outer", "left", "right", and similar expressions used herein are for the purpose of illustration only and are not intended to be the only implementation.

[0027] Embodiment 1

[0028] Referring to the drawings Figures 1-5 The application provides a civil engineering concrete sampling device, which comprises a shell 1, a sampling mechanism, a driving mechanism and a mold box 3. The shell 1 is rectangular, and the shell 1 is made of transparent material, which facilitates observation of the sampling condition. The side wall of the shell 1 is provided with a circular feeding port, and the shell 1 is connected with the sampling mechanism at the feeding port. The sampling mechanism is used for extracting concrete slurry and introducing it into the mold box 3. The sampling mechanism comprises a feeding pipe 2, and the rear end of the feeding pipe 2 is connected with a material guide pipe 14. The two ends of the feeding pipe 2 are rigid structures, and the middle part is a flexible structure, which facilitates movement of the feeding pipe 2 to select a sampling position. The driving mechanism comprises a sampling assembly and a rotating assembly, and the rotating assembly comprises a ratchet wheel 12. The feeding pipe 2 extracts concrete slurry through the sampling assembly, and the rotating assembly is used for driving the mold box 3 to rotate. The mold box 3 is cylindrical, and a plurality of sampling grooves are formed in the mold box 3. The sampling grooves are used for containing concrete samples. The mold box 3 is arranged below the driving mechanism, and a central column 4 is arranged at the bottom of the mold box 3. A plurality of ratchet teeth 15 are arranged on the outer side of the central column 4, and the ratchet teeth 15 are rotatably connected with the central column 4. A spring 16 is arranged between the ratchet teeth 15 and the side wall of the central column 4. The central column 4 is engaged with the ratchet wheel 12 through the ratchet teeth 15, and the mold box 3 is driven to rotate by the ratchet wheel 12. The ratchet wheel 12 can rotate in two directions. When the ratchet wheel 12 rotates counterclockwise, the mold box 3 is driven to rotate. When the ratchet wheel 12 rotates clockwise, the ratchet teeth 15 are pressed by the teeth of the ratchet wheel 12 and are inclined to one side. Therefore, when the ratchet wheel 12 reversely rotates, the mold box 3 cannot rotate.

[0029] Preferably, the sampling assembly comprises the suction cylinder 20 and the gear 11, one end of the suction cylinder 20 is connected to the feeding pipe 2, the piston 10 is slidably connected inside the suction cylinder 20, the piston 10 is connected to the telescopic rod 8 on the side away from the feeding pipe 2, a strip-shaped through hole is formed in the rear end of the telescopic rod 8, the strip-shaped through hole is formed along the vertical direction, the gear rack 9 is arranged on one side wall of the strip-shaped through hole, and the gear rack 9 is engaged with the gear 11. The length of the strip-shaped through hole is equal to the sum of half the circumference and the diameter of the gear 11, that is, the gear 11 can only rotate 180° at a time, when the gear 11 rotates clockwise, the telescopic rod 8 drives the piston 10 to move to the right side, the air pressure in the suction cylinder 20 decreases, the concrete slurry is introduced into the feeding pipe, and then introduced into the mold box 3 below from the guide pipe 14. When the gear 11 rotates counterclockwise, the telescopic rod 8 drives the piston 10 to move to the left side, the air pressure in the suction cylinder 20 increases, and the concrete slurry in the feeding pipe 2 is pushed out of the feeding pipe. The top of the shell 1 is provided with a turnover cover at the suction cylinder 20 and the feeding pipe 2, the turnover cover can be turned up, and the feeding pipe 2 can be disassembled or installed from here.

[0030] Preferably, the driving mechanism further comprises a motor 13, the output shaft of the motor 13 is provided with a connecting shaft at the lower end, the gear 11 and the ratchet wheel 12 are fixedly connected at both ends of the connecting shaft, and the gear 11 and the ratchet wheel 12 rotate synchronously. When the gear column 11 and the ratchet wheel 12 rotate counterclockwise, the piston 10 moves to the left, the mold box 3 rotates clockwise, the concrete slurry cannot enter the mold box 3, and when the gear column 11 and the ratchet wheel 12 rotate clockwise, the piston 10 moves to the right, the mold box 3 is stationary, and the concrete slurry can be introduced into the mold box 3. The motor 13 is controlled by an Intermatic DT620 digital timer switch, the timer switch is pre-set to have two use modes of sampling mode and adjustment mode, the running time of the two modes is fixed each time, and the specific running time is set according to the size of the mold box 3, the connecting shaft rotates clockwise in the sampling mode, the connecting shaft rotates counterclockwise in the adjustment mode, and the two modes are started by the user independently.

[0031] Preferably, the mold box 3 is provided with a plurality of partition plates 17 from the center column 4 to the side wall, the angles between each partition plate 17 are the same, that is, each containing chamber of the same mold box 3 is the same in shape, and each containing chamber corresponds to the same number of ratchet teeth, that is, when the mold box 3 rotates with the ratchet wheel 12, each rotation can rotate a different containing chamber to below the guide pipe 14. The mold box 3 is provided with a scale line on the outer side wall of each containing chamber, which facilitates observation of whether the sampling quantity meets the standard.

[0032] Preferably, the mold box 3 is provided with a rubber ring 7 below. The rubber ring 7 increases the friction between the mold box 3 and the bottom of the shell 1, increases the stability of the mold box 3, ensures that the mold box 3 does not rotate when the gear 11 reversely rotates, and further ensures that the guide pipe 14 can only discharge each containing chamber once.

[0033] Preferably, the side wall of the shell 1 is provided with a lifting door 18, and the mold box 3 can be installed or removed from the lifting door 18.

[0034] Working principle: when the device is used for sampling, first lower the lifting door 18, install the mold box 3 at the bottom of the shell 1, and then raise the lifting door 18. Then open the flip cover, install the feeding pipe 2 at the end of the suction cylinder 20, adjust the angle of the feeding pipe 2 so that the outlet of the guide pipe 14 is downward, and close the flip cover. Place the device flat, select a sampling point in the stirring device, insert the end of the feeding pipe 2 into the concrete slurry, start the sampling mode of the motor 13, and the concrete slurry is introduced into the receiving chamber at the lower end of the guide pipe 14. After the sampling mode of the motor 13 is stopped, move the end of the feeding pipe 2 to a new sampling point, start the adjustment mode of the motor 13, the mold box 3 rotates, and after the adjustment mode of the motor 13 is completed, start the sampling mode of the motor 13, and repeat the above steps until each receiving chamber of the mold box 3 is filled with samples.

[0035] Embodiment 2

[0036] Referring to the accompanying drawings Figure 6 , the present application provides a concrete sampling device for civil engineering, compared with embodiment 1, in order to improve the stability of the device, a magnet two 6 is arranged at the center of the bottom of the shell 1, and a magnet one 5 is arranged below the mold box 3, the positions of the magnet one 5 and the magnet two 6 correspond to each other, and the magnetic poles at the top end of the magnet two 6 and the magnetic poles at the bottom end of the magnet one 5 are different.

[0037] Working principle: by arranging the magnet one 5 and the magnet two 6, when the device is used or transported, the mold box 3 can be tightly connected with the bottom of the shell 1, the stability of the connection between the mold box and the shell is increased, and when the device is impacted, the mold box will not move up and down and be dislocated, and cannot be connected with the guide pipe or the gear column.

[0038] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A concrete sampling device for civil engineering, comprising a shell (1), a sampling mechanism, a driving mechanism, and a mold box (3), characterized in that: The outer shell (1) has a feed inlet on its side wall. A sampling mechanism is connected to the feed inlet of the outer shell (1). The sampling mechanism is used to extract concrete slurry and introduce it into the mold box (3). The sampling mechanism includes a feed pipe (2) and a guide pipe (14) is connected to the lower rear end of the feed pipe (2). The driving mechanism includes a sampling component and a rotating component. The feed pipe (2) extracts concrete slurry through the sampling component. The rotating component is used to drive the mold box (3) to rotate. The mold box (3) has several sampling slots. The sampling slots are used to hold concrete samples. The rotating component includes a ratchet (12). The mold box (3) is located below the drive mechanism. A central column (4) is provided at the center of the bottom of the mold box (3). Several ratchet teeth (15) are provided on the outer side of the central column (4). The ratchet teeth (15) are rotatably connected to the central column (4). A spring (16) is provided between the ratchet teeth (15) and the side wall of the central column (4). The central column (4) meshes with the ratchet wheel (12) through the ratchet teeth (15). The ratchet wheel (12) drives the mold box (3) to rotate through the central column (4).

2. The concrete sampling device for civil engineering according to claim 1, characterized in that, The sampling assembly includes a vacuum cylinder (20) and a gear (11). One end of the vacuum cylinder (20) is connected to the feed pipe (2). A piston (10) is slidably connected inside the vacuum cylinder (20). A telescopic rod (8) is connected to the piston (10) on the side away from the feed pipe (2). A strip-shaped through hole is opened at the rear end of the telescopic rod (8). The strip-shaped through hole is opened in the vertical direction. A rack (9) is provided on one side wall of the telescopic rod (8) inside the strip-shaped through hole. The rack (9) meshes with the gear (11).

3. A concrete sampling device for civil engineering according to claim 2, characterized in that, The drive mechanism also includes a motor (13), and the lower end of the output shaft of the motor (13) is provided with a connecting shaft. The gear (11) and ratchet (12) are fixedly connected to both ends of the connecting shaft.

4. A concrete sampling device for civil engineering according to claim 1, characterized in that, The mold box (3) has multiple partition plates (17) extending from the central column (4) to the side wall.

5. A concrete sampling device for civil engineering according to claim 1, characterized in that, A rubber ring (7) is provided below the mold box (3).

6. A concrete sampling device for civil engineering according to claim 1, characterized in that, The outer casing (1) has a lifting door (18) on its side wall and a flip cover (19) on its top.

7. A concrete sampling device for civil engineering according to claim 1, characterized in that, A second magnet (6) is provided at the center of the bottom of the outer shell (1), and a first magnet (5) is provided below the mold box (3). The positions of the first magnet (5) and the second magnet (6) are corresponding, and the magnetic poles at the top of the second magnet (6) and the magnetic poles at the bottom of the first magnet (5) are different.

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