Sampling device for concrete detection

Abstract

The utility model relates to the technical field of sampling equipment, in particular to a sampling device for concrete detection, which comprises a collecting shell, a transverse driving mechanism arranged in the collecting shell, an electric sampling module connected with the transverse driving mechanism, a depth observation mechanism arranged on the electric sampling module, and a fixing mechanism arranged on the outer wall of the collecting shell, one end of the depth observation mechanism penetrates through the second through hole and extends to the other end of the collection shell; according to the device, in concrete block crushing and sampling operation, by means of the negative pressure adsorption function of the fixing mechanism, the collecting shell is stably fixed to the side face of a concrete block, displacement of the collecting shell and sampling position deviation of a crushing head are avoided, and the sampling accuracy is guaranteed; meanwhile, due to the arranged depth observation rod and scale marks, an operator can visually and conveniently observe the sampling depth, it is ensured that sampling meets the specification, and the sampling work quality and efficiency are improved.

Description

Technical Field

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

[0002] Concrete, a key material in the construction industry, is made by mixing cement, sand, water, and various additives in specific proportions and then curing it according to standard procedures. Due to its excellent strength and durability, concrete is widely used in numerous engineering projects, including buildings, roads, and bridges. Concrete quality testing can be divided into two dimensions: macroscopic and microscopic. At the macroscopic level, parameters such as compressive strength and flexural strength are mainly tested. These parameters reflect the concrete's ability to withstand loads during actual use, and testing typically involves using block-shaped concrete samples. At the microscopic level, the focus is on indicators such as chloride content. Chlorine content affects the durability of the reinforcing steel in the concrete; testing these parameters generally requires crushing the concrete sample before sampling and analysis.

[0003] A sampling device for concrete testing, disclosed in Chinese Patent No. CN222439168U, uses a sampling motor to drive a sampling blade to rotate. The rotating sampling blade passes through a collection shell to achieve broken concrete sampling. The obtained sample then enters the sampling shell, completing the concrete breaking and sampling operation.

[0004] However, in actual operation, when sampling, the collection shell only contacts the surface of the concrete block, requiring the operator to manually hold the collection shell while simultaneously holding the sampling motor. Furthermore, the device lacks a component for visually displaying the sampling depth, leading to the following problems:

[0005] 1. The above operating method is very likely to cause the collection shell to shift during the sampling process, resulting in deviation of the sampling position of the sampling knife and making it difficult to guarantee the accuracy of the sampling;

[0006] 2. Operators cannot directly observe the sampling depth, making it difficult to ensure that each sampling meets the specified requirements. Utility Model Content

[0007] The purpose of this invention is to provide a sampling device for concrete testing, which solves the problems of existing devices where the collection shell only touches the surface of the concrete block during sampling, requiring manual simultaneous fixing of the collection shell and the sampling motor, which can easily lead to shell displacement and sampling position deviation, affecting sampling accuracy; moreover, the device lacks an intuitive sampling depth display component, making it impossible to guarantee that the sampling meets the requirements.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for concrete testing, comprising a collection shell, a first perforation and a second perforation respectively disposed at both ends of the collection shell, a transverse drive mechanism disposed within the collection shell, an electric sampling module connected to the transverse drive mechanism, a depth observation mechanism disposed on the electric sampling module, and a fixing mechanism disposed on the outer wall of the collection shell. The electric sampling module can move along the length direction of the collection shell through the transverse drive mechanism, and one end of the electric sampling module can extend through the first perforation to one end of the collection shell. One end of the depth observation mechanism passes through the second perforation and extends to the other end of the collection shell. The collection shell is cylindrical in shape.

[0009] Furthermore, the fixing mechanism includes a negative pressure adsorption mechanism disposed on the outer wall of the collection shell and a negative pressure vacuum control mechanism disposed on the outer wall of the collection shell and connected to the negative pressure adsorption mechanism, wherein the negative pressure adsorption mechanism and the negative pressure vacuum control mechanism are arranged horizontally at intervals.

[0010] Furthermore, the negative pressure adsorption mechanism includes an annular shell disposed on the outer wall of the collection shell, a plurality of connecting pipes connected to one end of the annular shell and arranged in annular intervals, and a vacuum suction cup connected to the connecting pipes. The adsorption working surface of the vacuum suction cup protrudes outward on one end face of the collection shell, and the first perforation is located between the plurality of vacuum suction cups.

[0011] Furthermore, the bottom of the outer wall of the collection housing is connected to a conical guide hopper located on one side of the annular housing, the discharge port of the conical guide hopper is connected to a sample collection bottle, the bottom wall of the outer wall of the collection housing is connected to a handle located on one side of the conical guide hopper, and the inside of the collection housing is provided with an inclined platform located on one side of the conical guide hopper, the inclined platform being connected to one end of the inside of the collection housing.

[0012] Furthermore, the negative pressure vacuum control mechanism includes a negative pressure vacuum pump disposed on the outer wall of the collection housing, an air inlet pipe connected to the negative pressure vacuum pump, and a valve disposed on the air inlet pipe section, wherein one end of the air inlet pipe is connected to the other end of the annular housing.

[0013] Furthermore, the outer wall of the collection housing is provided with a power supply box located on the side of the negative pressure vacuum pump and a storage battery located inside the power supply box.

[0014] Furthermore, the depth observation mechanism includes a depth observation rod and a scale line located on the axial direction of the depth observation rod for indicating the sampling depth. One end of the depth observation rod passes through a second perforation and extends to the other end of the collection housing.

[0015] Furthermore, the electric sampling module includes a mounting frame located inside the collection housing, a second motor located on one side of the mounting frame, a pulverizing head connected to the output end of the second motor and located on one side of the mounting frame, and a spiral discharge groove located on the outer wall of the pulverizing head. The other side of the mounting frame is connected to one end of the depth observation rod, and one end of the pulverizing head can pass through the first perforation and extend to one end of the collection housing.

[0016] Furthermore, the lateral drive mechanism includes a first motor located at one end of the collection housing and above the depth observation rod, a threaded rod connected to the output end of the first motor, a threaded block threadedly engaged with the threaded rod and located inside the collection housing, guide rods located at both ends inside the collection housing and below the crushing head, and a sliding sleeve slidably disposed on the guide rods and connected to the lower side of the mounting frame. The lower side of the threaded block is connected to the upper side of the mounting frame, and the other end of the threaded rod is rotatably connected to one end inside the collection housing.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. When performing crushing and sampling operations on concrete blocks, this utility model device uses a fixing mechanism and the principle of negative pressure adsorption to fix the collection shell to the side of the concrete block. This enhances the connection stability between the collection shell and the concrete block, avoids problems such as displacement of the collection shell and deviation of the sampling position of the crushing head, and fundamentally ensures the accuracy of sampling.

[0019] 2. Through the coordinated operation of the lateral drive mechanism, electric sampling module, depth observation rod and scale lines, an intuitive and convenient way to observe sampling depth is provided for operators during the sampling process, ensuring that each sampling operation meets the prescribed requirements and improving the quality and efficiency of sampling work. Attached Figure Description

[0020] Fig. 1 This is a cross-sectional schematic diagram of the sampling device for concrete testing according to this utility model;

[0021] Fig. 2 This is a side view schematic diagram of the collection shell of this utility model;

[0022] Fig. 3 This is a system control block diagram of the sampling device for concrete testing according to this utility model.

[0023] In the diagram: 1. Collection shell; 2. First perforation; 3. Second perforation; 4. Conical guide hopper; 5. Sample collection bottle; 6. Handle; 7. Annular shell; 8. Connecting pipe; 9. Vacuum suction cup; 10. Air inlet pipe; 11. Valve; 12. Negative pressure vacuum pump; 13. Lateral drive mechanism; 14. First motor; 15. Threaded rod; 16. Threaded block; 17. Sliding sleeve; 18. Guide rod; 19. Electric sampling module; 20. Mounting frame; 21. Second motor; 22. Crushing head; 23. Spiral discharge groove; 24. Depth observation rod; 25. Scale line; 26. Power supply box; 27. Battery; 28. Inclined stage. Detailed Implementation

[0024] Please see Figs. 1-3 A sampling device for concrete testing includes a collection shell 1, a first perforation 2 and a second perforation 3 respectively located at both ends of the collection shell 1. The inner wall of the first perforation 2 is connected to a tetrafluoroethylene pad. The sampling device also includes a transverse drive mechanism 13 located inside the collection shell 1, an electric sampling module 19 connected to the transverse drive mechanism 13, a depth observation mechanism located on the electric sampling module 19, and a fixing mechanism located on the outer wall of the collection shell 1. The electric sampling module 19 can move along the length of the collection shell 1 via the transverse drive mechanism 13, and one end of the electric sampling module 19 can extend through the first perforation 2 to one end of the collection shell 1. One end of the depth observation mechanism extends through the second perforation 3 to the other end of the collection shell 1. The collection shell 1 is cylindrical in shape, and one end of the collection shell 1 is provided with anti-slip texture. When the collection shell 1 comes into contact with the concrete block, the friction between the two is increased, the stability of the collection shell 1 is improved, and the risk of position displacement due to unstable contact during sampling is further reduced.

[0025] The fixing mechanism includes a negative pressure adsorption mechanism mounted on the outer wall of the collection housing 1, and a negative pressure vacuum control mechanism mounted on the outer wall of the collection housing 1 and connected to the negative pressure adsorption mechanism. The negative pressure adsorption mechanism and the negative pressure vacuum control mechanism are arranged horizontally at intervals. The negative pressure adsorption mechanism includes an annular housing 7 connected to the outer wall of the collection housing 1, multiple connecting pipes 8 connected to one end of the annular housing 7 and arranged annularly at intervals, and vacuum suction cups 9 connected to the connecting pipes 8. The adsorption working surface of the vacuum suction cups 9 protrudes outward on one end face of the collection housing 1, and the first perforation 2 is located between the multiple vacuum suction cups 9. The negative pressure vacuum control mechanism includes a negative pressure vacuum pump 12 (using a commercially available miniature negative pressure vacuum pump 12) mounted on the outer wall of the collection housing 1, an air inlet pipe 10 connected to the negative pressure vacuum pump 12, and a valve 11 mounted on the section of the air inlet pipe 10. One end of the air inlet pipe 10 is connected to the other end of the annular housing 7.

[0026] The bottom of the outer wall of the collection housing 1 is connected to a conical guide hopper 4 located on one side of the annular housing 7. The discharge port of the conical guide hopper 4 is connected to a sample collection bottle 5. The inner side of the discharge port of the conical guide hopper 4 is provided with an internal thread. The discharge port of the conical guide hopper 4 and the external threaded neck of the sample collection bottle 5 form a threaded locking connection. The bottom wall of the outer wall of the collection housing 1 is connected to a handle 6 located on one side of the conical guide hopper 4. The inside of the collection housing 1 is connected to an inclined platform 28 located on one side of the conical guide hopper 4. The inclined platform 28 is connected to one end of the inside of the collection housing 1.

[0027] The outer wall of the housing 1 is connected to a power supply box 26 located on one side of the negative pressure vacuum pump 12, and a storage battery 27 installed inside the power supply box 26. The storage battery 27 is electrically connected to the first motor 14 (using a commercially available DC motor), the second motor 21, and the negative pressure vacuum pump 12. The storage battery 27 provides power support to the first motor 14, the second motor 21, and the negative pressure vacuum pump 12.

[0028] The depth observation mechanism includes a depth observation rod 24 and a scale line 25 located on the axial direction of the depth observation rod 24 for indicating the sampling depth. One end of the depth observation rod 24 passes through the second through hole 3 and extends to the other end of the collection housing 1. The sampling depth can be directly observed through the scale line 25.

[0029] The electric sampling module 19 includes a mounting frame 20 located inside the collection housing 1, a second motor 21 (using a commercially available DC motor) mounted on one side of the inner side of the mounting frame 20, a crushing head 22 connected to the output end of the second motor 21 and located on one side of the mounting frame 20, and a spiral discharge groove 23 provided on the outer wall of the crushing head 22. The other side of the mounting frame 20 is connected to one end of the depth observation rod 24. One end of the crushing head 22 can pass through the first perforation 2 and extend to one end of the collection housing 1. Through the cooperation of the second motor 21 and the crushing head 22, the sampling operation of the concrete block is realized. The crushed powder is discharged through the spiral discharge groove 23 and enters the interior of the collection housing 1, thus realizing the crushing and sampling of the concrete block.

[0030] The lateral drive mechanism 13 includes a first motor 14, a threaded rod 15, a threaded block 16, a guide rod 18, and a sliding sleeve 17. The first motor 14 is installed at one end of the collecting housing 1 and is located above the depth observation rod 24. The output end of the first motor 14 is connected to one end of the threaded rod 15. The other end of the threaded rod 15 is rotatably connected to one end of the inside of the collecting housing 1 via a bearing. The threaded block 16 is threadedly engaged with the threaded rod 15. The guide rod 18 is installed at both ends inside the collecting housing 1 and is located below the crushing head 22. The sliding sleeve 17 is slidably disposed on the guide rod 18 and is connected to the lower side of the mounting frame 20. The lower side of the threaded block 16 is connected to the upper side of the mounting frame 20. Through the coordinated operation of the first motor 14, the threaded rod 15, the threaded block 16, the guide rod 18, and the sliding sleeve 17, the lateral drive of the mounting frame 20 within the collecting housing 1 is realized.

[0031] A PLC controller is installed at one end of the housing 1, located below the depth observation rod 24. The PLC controller is electrically connected to the first motor 14, the second motor 21, the negative pressure vacuum pump 12, and the valve 11. The PLC controller controls the opening and closing of the first motor 14, the second motor 21, the negative pressure vacuum pump 12, and the valve 11 to ensure that each component operates as needed.

[0032] Working Process and Principle: When using this device to sample concrete blocks, the operator first holds handle 6 and places the collection housing 1 against the surface of the concrete block, with multiple vacuum suction cups 9 adhering to the concrete block. Then, via the PLC controller, the negative pressure vacuum pump 12 is simultaneously started and valve 11 is opened. At this time, the multiple vacuum suction cups 9 are connected to the annular housing 7 via the connecting pipe 8. The annular housing 7, in turn, forms a passage with the negative pressure vacuum pump 12 via the air inlet pipe 10. As the negative pressure vacuum pump 12 is activated, the air inside the multiple vacuum suction cups 9 is expelled, creating a negative pressure environment inside, which in turn adsorbs the collection housing 1 onto the concrete block, providing stable support for subsequent sampling operations. After adsorption and fixation are completed, the first motor 14 and the second motor 21 are simultaneously started via the PLC controller again. The first motor 14 starts working, driving the threaded rod 15 to rotate. The threaded block 16, which is threadedly engaged with the threaded rod 15, moves accordingly. Since the threaded block 16 is connected to the mounting frame 20, and the sliding sleeve 17 below the mounting frame 20 is fitted onto the guide rod 18, the mounting frame 20 moves under the drive of the threaded block 16, while the sliding sleeve 17 slides synchronously along the guide rod 18, causing the crushing head 22 to gradually pass through the first perforation 2. At the same time, the second motor 21 drives the crushing head 22 to rotate. Under the combined action of these two motors, the crushing head 22 crushes the concrete block. During the crushing process, the generated concrete powder enters the collection housing 1 along the spiral discharge groove 23. Subsequently, with the help of the inclined table 28, the powder falls into the conical guide hopper 4 and finally enters the sample collection bottle 5 for collection. During this period, as the mounting frame 20 continues to move, the depth observation rod 24 connected to it gradually enters the collection housing 1 through the second perforation 3. The operator can obtain the sampling depth in real time by observing the scale line 25 on the depth observation rod 24.

[0033] During the concrete block crushing and sampling process, the device enhances the connection stability between the collection shell 1 and the concrete block through vacuum adsorption, avoiding adverse effects on sampling accuracy caused by displacement of the collection shell 1 or deviation of the sampling position of the crushing head 22. In addition, through the depth observation rod 24 and the scale line 25, the operator can intuitively and conveniently observe the sampling depth during the sampling process, ensuring that each sampling meets the specified requirements, thus improving the quality and efficiency of the sampling work.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling device for concrete testing, comprising a collection shell (1) and a first perforation (2) and a second perforation (3) respectively disposed at both ends of the collection shell (1), characterized in that, It also includes a lateral drive mechanism (13) disposed in the collection housing (1), an electric sampling module (19) connected to the lateral drive mechanism (13), a depth observation mechanism disposed on the electric sampling module (19), and a fixing mechanism disposed on the outer wall of the collection housing (1). The electric sampling module (19) can move along the length direction of the collection housing (1) through the lateral drive mechanism (13), and one end of the electric sampling module (19) can extend through the first perforation (2) to one end of the collection housing (1). One end of the depth observation mechanism passes through the second perforation (3) and extends to the other end of the collection housing (1). The collection housing (1) is cylindrical in shape.

2. The sampling device as described in claim 1, characterized in that, The fixing mechanism includes a negative pressure adsorption mechanism on the outer wall of the collection shell (1) and a negative pressure vacuum control mechanism on the outer wall of the collection shell (1) and connected to the negative pressure adsorption mechanism. The negative pressure adsorption mechanism and the negative pressure vacuum control mechanism are arranged horizontally at intervals.

3. The sampling device as described in claim 2, characterized in that, The negative pressure adsorption mechanism includes an annular shell (7) on the outer wall of the collection shell (1), a plurality of connecting pipes (8) connected to one end of the annular shell (7) and arranged in annular intervals, and a vacuum suction cup (9) connected to the connecting pipe (8). The adsorption working surface of the vacuum suction cup (9) protrudes outward on one end face of the collection shell (1), and the first perforation (2) is located between the plurality of vacuum suction cups (9).

4. The sampling device as described in claim 3, characterized in that, The bottom of the outer wall of the collection housing (1) is connected to a conical guide hopper (4) located on one side of the annular housing (7). The discharge port of the conical guide hopper (4) is connected to a sample collection bottle (5). The bottom wall of the outer wall of the collection housing (1) is connected to a handle (6) located on one side of the conical guide hopper (4). The inside of the collection housing (1) is provided with an inclined platform (28) located on one side of the conical guide hopper (4). The inclined platform (28) is connected to one end of the inside of the collection housing (1).

5. The sampling device as described in claim 2, characterized in that, The negative pressure vacuum control mechanism includes a negative pressure vacuum pump (12) installed on the outer wall of the collection housing (1), an air inlet pipe (10) connected to the negative pressure vacuum pump (12), and a valve (11) installed on the section of the air inlet pipe (10). One end of the air inlet pipe (10) is connected to the other end of the annular housing (7).

6. The sampling device as described in claim 5, characterized in that, The outer wall of the collection housing (1) is provided with a power supply box (26) located on one side of the negative pressure vacuum pump (12) and a storage battery (27) located inside the power supply box (26).

7. The sampling device as described in claim 1, characterized in that, The depth observation mechanism includes a depth observation rod (24) and a scale line (25) located on the axial direction of the depth observation rod (24) for indicating the sampling depth. One end of the depth observation rod (24) passes through the second perforation (3) and extends to the other end of the collection housing (1).

8. The sampling device as described in claim 7, characterized in that, The electric sampling module (19) includes a mounting frame (20) located inside the collection housing (1), a second motor (21) located on one side of the inside of the mounting frame (20), a crushing head (22) connected to the output end of the second motor (21) and located on one side of the mounting frame (20), and a spiral guide groove (23) provided on the outer wall of the crushing head (22). The other side of the mounting frame (20) is connected to one end of the depth observation rod (24). One end of the crushing head (22) can pass through the first perforation (2) and extend to one end of the collection housing (1).

9. The sampling device as described in claim 8, characterized in that, The transverse drive mechanism (13) includes a first motor (14) located at one end of the collection housing (1) and above the depth observation rod (24), a threaded rod (15) connected to the output end of the first motor (14), a threaded block (16) threadedly engaged with the threaded rod (15) and located inside the collection housing (1), a guide rod (18) located at both ends inside the collection housing (1) and below the crushing head (22), and a sliding sleeve (17) slidably disposed on the guide rod (18) and connected to the lower side of the mounting frame (20). The lower side of the threaded block (16) is connected to the upper side of the mounting frame (20), and the other end of the threaded rod (15) is rotatably connected to one end inside the collection housing (1).

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