Concrete sampling device

Abstract

The utility model discloses a concrete sampling device, which relates to the technical field of civil engineering detection and comprises a grinding wheel and at least one pair of adjacent grinding wheels, a plurality of grooves are arranged on the circumferential surfaces of the grinding wheels, shafts of the grinding wheels are parallel and parallel, and the rotating directions of the two grinding wheels in one pair are opposite. A dust baffle is arranged in the circumferential direction of the grinding wheel; the plug pins are located on the inner rings of the grinding wheels, the plug pins of the adjacent grinding wheels are connected through elastic assemblies, and the distance between the plug pins is adjusted through the elastic assemblies; and the collecting barrel is provided with an opening and is connected to the air exhaust mechanism and the collecting mechanism, and the opening faces the space between the adjacent grinding wheels. The utility model provides a concrete sampling device which does not need to drill holes in a concrete structure, does not need to be pressed by hands vigorously in the sampling process, is easy to control, not easy to deviate, time-saving and labor-saving, and greatly reduces the amount of dust during use.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering detection, in particular to a concrete sampling device. Background Art

[0002] Civil engineering is a general term for the science and technology of building various land engineering facilities. In road and bridge construction, concrete generally needs to go through the steps of production, transportation, pouring, vibration, and maintenance. In order to ensure the quality of construction and the safety of the project, quality control is required for each link. Since the performance of concrete is basically unchanged after pouring and compacting, it is necessary to control the quality of concrete after pouring and compacting. At present, the existing civil engineering inspection generally uses concrete sampling devices, such as the patent CN220104555U, which discloses a cement sampler, which relates to the field of cement technology. The present application includes a sampling tube and a protective frame, a lower sample chamber is provided on one side of the sampling tube, a drill bit is fixedly connected to the side of the sampling tube away from the lower sample chamber, a plurality of sampling holes are opened on the top of the sampling tube, a lower sample port is opened at the bottom of the lower sample chamber, and a lower sample tube is fixedly connected to the bottom of the lower sample port. The traditional drilling type cement sampling device needs to drill holes in the concrete structure, causing damage to the concrete structure. The grinding type cement sampling device has a single structure and needs to be pressed vigorously by hand during the sampling process. It is difficult to control, easy to deviate, time-consuming and labor-intensive. In addition, a large amount of dust will be generated during use, blocking the line of sight, affecting the health of workers and affecting the construction effect and efficiency. Utility Model Content

[0003] 1. Technical problems to be solved by the utility model

[0004] The existing drilling type cement sampling device needs to drill holes in the concrete structure, causing damage to the concrete structure, and the grinding type cement sampling device has a single structure. During the sampling process, it needs to be pressed hard by hand, is difficult to control, is easy to deviate, is time-consuming and labor-intensive, and a large amount of dust is generated during use, obstructing the line of sight, affecting the health of workers and affecting the construction effect and efficiency. The utility model provides a concrete sampling device, which does not require drilling holes in the concrete structure. During the sampling process, it does not need to be pressed hard by hand, is easy to control, is not easy to deviate, saves time and labor, and greatly reduces the amount of dust during use.

[0005] 2. Technical solution

[0006] In order to solve the above problems, the technical solution provided by the utility model is:

[0007] A concrete sampling device comprises a grinding wheel, comprising at least one pair of adjacent grinding wheels, the circumferential surface of the grinding wheel is provided with a plurality of grooves, the axes of the grinding wheels are parallel and arranged side by side, and the rotation directions of the two grinding wheels in a pair are opposite, and a dust shield is provided on the circumference of the grinding wheel; a latch is located on the inner ring of the grinding wheel, the latches of adjacent grinding wheels are connected by an elastic component and the distance is adjusted by the elastic component; a collecting cylinder is provided with an opening and is connected to an exhaust mechanism and a collecting mechanism, and the opening faces between the adjacent grinding wheels.

[0008] Efficient grinding and sampling: Structural features: at least one pair of adjacent grinding wheels, with multiple grooves on the circumferential surface, and the two grinding wheels in a pair rotate in opposite directions; Technical effect: The relative movement of the grinding wheels forms a strong grinding effect, and the grooves enhance the friction, thereby achieving efficient and uniform grinding and sampling of the concrete surface.

[0009] Dust control: Structural features: A dust shield is provided around the grinding wheel; Technical effect: The dust shield blocks and guides the dust during the grinding process, reduces dust, improves the working environment, and protects the health and safety of operators.

[0010] Dynamic adaptability and stability: Structural features: The pins are located in the inner ring of the grinding wheel, and the pins of adjacent grinding wheels are connected by elastic components, and the distance can be adjusted by the elastic components; Technical effect: The elastic component enables the device to adjust the spacing between the grinding wheels, maintain stable lateral pressure and contact effect for grinding, and ensure the stability of the sampling process and consistency of sampling quality.

[0011] Convenient collection and processing: Structural features: The collection tube is provided with an opening and is connected to the exhaust mechanism and the collection mechanism, and the opening faces between adjacent grinding wheels; Technical effect: The collection tube is convenient for collecting concrete samples produced by grinding, and cooperates with the exhaust mechanism to remove dust and keep the working area clean. At the same time, the collection mechanism can realize centralized processing, analysis or storage of samples, thereby improving the efficiency and convenience of sampling work.

[0012] Optionally, a driving wheel is provided on the end surface of the grinding wheel, a limiting groove is provided on the circumference of the driving wheel, and the limiting groove is connected to the driving mechanism through a belt.

[0013] The driving wheel is used to cooperate with the belt transmission, and the limiting groove and the belt are used for transmission.

[0014] Optionally, the two grinding wheels of the pair of grinding wheels are independently connected to the driving mechanism.

[0015] The two grinding wheels are independently linked to increase the power of the grinding wheels and improve the efficiency of the grinding wheels in grinding and extracting the concrete surface.

[0016] Optionally, the elastic component includes a docking buckle, a connecting rod and a spring, the docking buckle is provided with a through hole, the spring is sleeved outside the connecting rod, the connecting rod is connected to the through hole, the spring is connected between the two docking buckles, limiting mechanisms are provided at both ends of the connecting rod, and the docking buckle is fixed to the pin.

[0017] The butt buckle is fixedly connected to the center of the grinding wheel. When the butt buckle moves, the grinding wheel will also move. The spring is elastically tightened between the two butt buckles to provide elastic tension between the grinding wheels so that the edges of the grinding wheels are in contact and the two grinding wheels can rotate together. The limiting mechanism is used to limit the outward axial movement of the butt buckle on the connecting rod.

[0018] Optionally, the limiting mechanism is a limiting plate.

[0019] The limit plates are fixedly connected to both ends of the connecting rod to prevent the butt buckle from falling off the connecting rod.

[0020] Optionally, the upper part of the docking buckle is fixed to the dust shield through a connecting bolt.

[0021] The connecting bolt is used to fix the dust shield.

[0022] Optionally, an annular anti-slip strip is provided on the edge of the grinding wheel.

[0023] The anti-slip strip is used to increase the friction of the edge of the grinding wheel. In single drive, the grinding wheel that is not connected to the driving mechanism can be driven to rotate by the grinding wheel connected to the driving mechanism.

[0024] Optionally, the groove is inclined.

[0025] The inclined grooves can reduce the resistance of the concrete surface to the grooves, and to a certain extent reduce the chance of the grinding wheel being stuck due to the concrete surface being too hard. The grooves parallel to the axis of the grinding wheel will greatly increase the resistance and reduce the effect of grinding the concrete surface. The inclined grooves extend the length of the groove grinding the concrete surface and offset the angle, which can improve the grinding effect.

[0026] Optionally, the opening is funnel-shaped.

[0027] The entry area of ​​the opening is enlarged, and concrete powder can enter the collecting cylinder more easily.

[0028] Optionally, the collecting cylinder is connected to the air extraction mechanism and the collecting mechanism via a hose.

[0029] The hose can facilitate the movement of the sampling device, but the suction mechanism and the collection mechanism are heavy and are not suitable to be moved with the sampling device.

[0030] 3. Beneficial effects

[0031] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0032] The technical solution provided by the utility model realizes efficient and accurate concrete sampling and effectively controls working dust through the special layout and reverse rotation design of the grinding wheel, the setting of the dust shield, the elastic adjustment pin and the matching collection system. The grinding wheel grinds the concrete surface without drilling holes in the concrete structure. During the sampling process, the two grinding wheels rotate relative to each other, and the operator does not need to apply lateral force to balance the rotation force. The concrete sample powder is ground upward, so there is no need for strong pressure by hand. It is easy to control and not easy to deviate, saving time and effort. The dust shield is set, and the amount of dust is greatly reduced during use. It has good dynamic adaptability and convenient sample collection and processing functions, and significantly improves the efficiency, quality and environmental protection performance of concrete sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A structural schematic diagram of a concrete sampling device proposed in an embodiment of the utility model;

[0034] Figure 2 A schematic diagram of the structure of a grinding wheel of a concrete sampling device proposed in an embodiment of the utility model;

[0035] Figure 3 A schematic diagram of the structure of a groove of a concrete sampling device proposed in an embodiment of the utility model;

[0036] Figure 4 A structural schematic diagram of a butt joint buckle and a dust shield of a concrete sampling device proposed in an embodiment of the utility model;

[0037] Figure 5 A schematic diagram of the structure of an elastic component of a concrete sampling device proposed in an embodiment of the utility model;

[0038] 1. Sampling device; 2. Grinding wheel; 21. Grinding wheel; 22. Driving wheel; 3. Latch; 31. Docking buckle; 311. Dust shield; 32. Connecting rod; 33. Spring; 4. Collecting tube. DETAILED DESCRIPTION

[0039] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0040] Example 1

[0041] Combined with Figure 1A concrete sampling device comprises a grinding wheel 2, comprising at least one pair of adjacent grinding wheels 21, the circumferential surface of the grinding wheel 21 is provided with a plurality of grooves, the axes of the grinding wheels 21 are parallel and arranged side by side, and the rotation directions of the two grinding wheels 21 in a pair are opposite, and a dust shield 311 is provided on the circumference of the grinding wheel 21; a latch 3 is located at the inner ring of the grinding wheel 21, the latches 3 of the adjacent grinding wheels 21 are connected by an elastic component and the distance is adjusted by the elastic component; a collecting cylinder 4 is provided with an opening and is connected to an exhaust mechanism and a collecting mechanism, and the opening faces between the adjacent grinding wheels 21.

[0042] In this embodiment, there is a single pair of grinding wheels 21, but multiple pairs can be provided to increase the grinding area. Adjacent grinding wheels 21 rotate relative to each other and rotate in opposite directions, which can offset the reverse force of the friction between each grinding wheel 21 and the concrete surface, so that the operator does not need to apply additional force to avoid lateral movement of the sampling device 1. The grooves are evenly arranged on the circumferential outer edge of the grinding wheel 21 to increase the friction. The dust shield 311 is a curved long plate, whose width covers the grinding wheel 21, and its curvature is the same as that of the grinding wheel 21. The pin 3 is rotatably connected to the grinding wheel 21, and a bearing is provided between the two. The pin 3 of the grinding wheel 21 is tightened with the pin 3 of another grinding wheel 21 through an elastic component, wherein the force of the spring 33 is a contraction force. The air extraction mechanism is an air pump, and the air pump is connected to a collection bottle or a collection box, and the collection bottle or the collection box is a collection mechanism.

[0043] The opening is funnel-shaped and has an inclination angle of 0° to 70°.

[0044] The collecting tube 4 is connected to the air extraction mechanism and the collecting mechanism through a hose.

[0045] Combined with Figure 2 The end surface of the grinding wheel 21 is provided with a driving wheel 22, and a limiting groove is provided in the circumference of the driving wheel 22, and the limiting groove is connected to the driving mechanism through a belt. The outermost end of the driving wheel 22, that is, the outer end of the limiting groove, is provided with a groove wall protruding from the groove bottom of the limiting groove, and the belt is limited by the groove wall when in the limiting groove. The driving mechanism is a motor.

[0046] Combined with Figure 3 The grooves are inclined, the inclination angle of the grooves is 10° to 45°, and there are protrusions with rectangular cross-sections between the grooves.

[0047] Combined with Figure 4 The top of the docking buckle 31 is fixed to the dust shield 311 by a connecting bolt. The top of the connecting bolt is connected to a support frame, and a mounting plate is welded to the top surface of the support frame. A positioning hole is opened at the axis of the mounting plate, and positioning rings are installed on the top and bottom surfaces of the positioning hole. The inner wall of the positioning hole is welded to the outside of the collection tube 4. A motor is installed on the mounting plate by bolts.

[0048] The design of the mounting plate and the positioning hole enables the collecting tube 4 to be firmly fixed on the sampling device 1 and ensures the correct position between it and the grinding wheel 21. The setting of the positioning ring further improves the sampling accuracy and ensures that the sample is obtained from a specific position of the concrete structure. The grinding wheel 21 is driven to rotate at a high speed by the rotation of the driving wheel 22 to achieve automatic sampling and improve sampling efficiency and accuracy. The distance between the collecting tube 4 and the grinding wheel 21 at the junction is 1 cm to 10 cm.

[0049] The edge of the grinding wheel 2 is provided with an annular anti-skid strip. The anti-skid strip is provided with anti-skid teeth or other anti-skid structures to increase the friction between the outer edges of the grinding wheel 21 and ensure that the power of the grinding wheel 21 without connecting the driving mechanism is not achieved when the single drive is used.

[0050] Combined with Figure 5 The elastic component includes a docking buckle 31, a connecting rod 32 and a spring 33. The docking buckle 31 is provided with a through hole. The spring 33 is sleeved outside the connecting rod 32. The connecting rod 32 is connected to the through hole. The spring 33 is connected between the two docking buckles 31. Limiting mechanisms are provided at both ends of the connecting rod 32. The docking buckle 31 is fixed to the pin 3.

[0051] The limiting mechanism is a limiting plate.

[0052] Working principle:

[0053] Single drive: install the sampling device 1 on the concrete structure, start the motor, drive the grinding wheel 2 to rotate, adjust the connecting rod 32 degrees, set the spacing between the grinding wheels 21 according to the sampling requirements (single drive or double drive), observe the collecting tube 4 and the collecting mechanism, and when the concrete sample is collected to a predetermined amount, stop grinding, disassemble the sampling device 1, collect the concrete sample, and clean the sampling device 1.

[0054] Example 2

[0055] Compared with the technical solution of Example 1, the concrete sampling device of this embodiment can be improved as follows:

[0056] Double drive: The two grinding wheels 21 of a pair of grinding wheels 21 are independently connected to the driving mechanism. Two motors are provided to be connected to the two grinding wheels 21 respectively, so as to increase the grinding power of the grinding wheels 21, but the power cost will be increased. During double drive, the elastic component is adjusted to separate the two grinding wheels 21, so as to avoid relative friction between the two grinding wheels 21 due to the rotation speed, causing wear or jamming.

[0057] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A concrete sampling device, characterized in that: include The grinding wheel comprises at least one pair of adjacent grinding wheels, wherein the circumferential surface of the grinding wheels is provided with a plurality of grooves, the axes of the grinding wheels are parallel and arranged side by side, and the rotation directions of the two grinding wheels in a pair are opposite, and a dust shield is provided on the circumference of the grinding wheels; A latch is located on the inner ring of the grinding wheel, and the latches of adjacent grinding wheels are connected by an elastic component and the distance between them is adjusted by the elastic component; The collecting cylinder is provided with an opening and is connected to the air extraction mechanism and the collecting mechanism, wherein the opening faces between the adjacent grinding wheels.

2. A concrete sampling device according to claim 1, characterized in that: A driving wheel is arranged on the end surface of the grinding wheel, and a limiting groove is arranged on the circumference of the driving wheel. The limiting groove is connected to the driving mechanism through a belt.

3. A concrete sampling device according to claim 2, characterized in that: The two grinding wheels of the pair of grinding wheels are independently connected to the driving mechanism.

4. A concrete sampling device according to claim 1, characterized in that: The elastic component includes a docking buckle, a connecting rod and a spring. The docking buckle is provided with a through hole. The spring is sleeved outside the connecting rod. The connecting rod is connected to the through hole. The spring is connected between the two docking buckles. Limiting mechanisms are provided at both ends of the connecting rod. The docking buckle is fixed to the pin.

5. A concrete sampling device according to claim 4, characterized in that: The limiting mechanism is a limiting plate.

6. A concrete sampling device according to claim 4, characterized in that: The upper part of the butt buckle is fixedly connected to the dust shield through a connecting bolt.

7. A concrete sampling device according to claim 1, characterized in that: The edge of the grinding wheel is provided with an annular anti-slip strip.

8. A concrete sampling device according to claim 1, characterized in that: The groove is inclined.

9. A concrete sampling device according to claim 1, characterized in that: The opening is funnel-shaped.

10. A concrete sampling device according to claim 9, characterized in that: The collecting cylinder is connected with the air extraction mechanism and the collecting mechanism through a hose.

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