Coal mine engineering concrete strength nondestructive testing tool

Abstract

The utility model relates to the field of coal mine engineering concrete detection, and discloses a coal mine engineering concrete strength nondestructive testing tool which comprises a base, universal wheels mounted at four corners of the bottom of the base, a turntable rotatably connected to the middle of the top of each universal wheel, a rotating mechanism arranged at the top of the base and used for rotating the turntable, and a connecting seat fixed to the middle of the top of the turntable, a sliding groove is formed in the side wall of the connecting base, a hydraulic push rod is arranged at the top of the base, a lifting mechanism for lifting the hydraulic push rod is arranged in the sliding groove, and a circular plate is fixed to the output end of the hydraulic push rod. The lifting mechanism is matched with the hydraulic push rod and the circular plate to drive the ultrasonic detection head to ascend, descend and move, concrete walls of different heights can be detected, workers do not need to frequently climb up and down a ladder stand, time is saved, working efficiency is improved, the ultrasonic detection head is protected through the protection mechanism, and working efficiency is improved. Collision with other objects is prevented, and the ultrasonic detection head is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology in coal mine engineering, and in particular to a non-destructive testing tool for the strength of concrete in coal mine engineering. Background Technology

[0002] Coal mine engineering involves the construction and operation of underground or open-pit coal mines. Concrete structures are widely used in mine support, roadway construction, and the construction of other related facilities. Concrete strength is an important indicator for assessing the safety of mine structures. High-strength concrete can effectively withstand geological pressure and dynamic loads within the mine, preventing collapse and other safety hazards. Timely and accurate detection of concrete strength is crucial for ensuring mine safety. Therefore, non-destructive testing tools for concrete strength in coal mine engineering are needed.

[0003] Traditional non-destructive testing tools for concrete strength in coal mine engineering typically require workers to hold the testing instrument and inspect areas below a certain height on the wall. When inspecting higher areas, workers must use ladders, scaffolding, or other lifting equipment to ascend. Due to the frequent climbing, the testing process is time-consuming and affects overall work efficiency. This method is particularly cumbersome when inspecting large areas or multiple locations. Moreover, traditional testing tools usually lack protective devices and are easily affected by external environmental factors such as collisions or drops, leading to damage to the testing tools. This not only increases equipment maintenance costs but may also result in inaccurate data during the testing process, affecting the reliability of the test results. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a non-destructive testing tool for the strength of concrete in coal mine engineering.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A non-destructive testing tool for concrete strength in coal mine engineering includes a base with casters at each of the four corners. A turntable is rotatably connected to the top center of each caster. A rotating mechanism for rotating the turntable is located on the top of the base. A connecting seat is fixed to the top center of the turntable, and a groove is formed on the side wall of the connecting seat. A hydraulic push rod is mounted on the top of the base, and a lifting mechanism for raising and lowering the hydraulic push rod is located inside the groove. A circular plate is fixed to the output end of the hydraulic push rod. An ultrasonic testing head is fixed to the center of the inner wall of the circular plate. A protective mechanism for the ultrasonic testing head is located on the inner wall of the circular plate, and a dust removal mechanism for cleaning the ultrasonic testing head is located on the outer wall of the circular plate. During use, the lifting mechanism, in conjunction with the hydraulic push rod and the circular plate, drives the ultrasonic testing head to rise, fall, and move. This allows for testing of concrete walls at different heights without requiring workers to frequently climb ladders, saving time and improving work efficiency. The protective mechanism protects the ultrasonic testing head from collisions with other objects, preventing damage.

[0007] As a further embodiment of this utility model, the rotating mechanism includes an external gear ring, which is sleeved on the outer wall of the turntable. A rotating shaft is rotatably connected to the top of the base, and a gear is sleeved on the outer wall of the rotating shaft. A second motor is fixed at the bottom of the base, and the output shaft of the second motor is fixed to the rotating shaft. The second motor drives the rotating shaft to rotate, which in turn drives the turntable to rotate in conjunction with the gear and the external gear ring. This, in turn, drives the hydraulic push rod to rotate. The rotation of the hydraulic push rod drives the circular plate and the ultrasonic detection head to rotate, enabling the ultrasonic detection head to detect the wall at different angles, thereby improving the comprehensiveness and flexibility of the detection.

[0008] As a further embodiment of this utility model, the lifting mechanism includes a slide groove, a lead screw is rotatably connected inside the slide groove, a lead screw nut is slidably connected to the inner side wall of the slide groove, the lead screw nut is sleeved on the side wall of the lead screw and the lead screw nut and the lead screw are adapted to each other, the lead screw nut and the hydraulic push rod are fixed, a first motor is fixed on the top of the connecting seat, and the output shaft of the first motor is fixed to the lead screw, driving the first motor to drive the lead screw to rotate, which in turn drives the hydraulic push rod to rise or fall along the slide groove direction in conjunction with the lead screw nut, thereby driving the circular plate and the ultrasonic detection head to rise or fall simultaneously, which can detect walls of different heights.

[0009] As a further embodiment of this utility model, the protective mechanism includes an annular plate disposed on the inner wall of a circular plate. An annular sleeve is fixed to the inner wall of the annular plate. Multiple sliding rods are equidistantly arranged in a circular pattern on the outer wall of the circular plate, and one end of each sliding rod is fixed to the annular plate. Springs are sleeved on the side walls of each sliding rod, and the two ends of each spring are respectively fixed to the circular plate and the annular plate. Multiple ball bearings are equidistantly arranged in a circular pattern on the outer wall of one end of the annular sleeve. A hydraulic push rod drives the circular plate and the ultrasonic detection head to gradually approach the wall to be detected until the multiple ball bearings contact the wall. At this time, the hydraulic push rod drives the circular plate and the ultrasonic detection head to continue to approach the wall, so that the circular plate gradually approaches the annular plate, and the multiple springs are in a compressed state until the ultrasonic detection head contacts the wall surface. When the multiple ball bearings are no longer in contact with the wall, under the reaction action of the multiple compressed springs, the circular plate gradually moves away from the annular sleeve, so that the ultrasonic detection head is inside the annular sleeve, preventing the ultrasonic detection head from colliding with other objects during rotation and avoiding damage to the ultrasonic detection head.

[0010] As a further embodiment of this utility model, the dust removal mechanism includes a fan, which is fixed to the outer wall of a circular plate. A connecting pipe is fixed to the air outlet of the fan, and an annular pipe is fixed to one end of the connecting pipe. Multiple branch pipes are fixed in a circular pattern at equal intervals on the side wall of the annular pipe, and one end of each branch pipe passes through the inner side wall of the annular sleeve. The fan drives the outside air to be drawn into the annular pipe through the connecting pipe, and blows the air onto the surface of the ultrasonic detection head through the multiple branch pipes. This blows off dust and other debris adhering to the surface of the ultrasonic detection head, preventing them from interfering with the propagation of ultrasonic waves and causing changes in sound wave reflection and transmission, thereby improving the accuracy of the detection results.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. During use, this device uses a lifting mechanism in conjunction with a hydraulic push rod and a circular plate to move the ultrasonic detection head up and down, enabling the detection of concrete walls at different heights. This eliminates the need for workers to frequently climb ladders, saving time spent on the detection process and improving work efficiency.

[0013] 2. When the ultrasonic testing head is not in contact with the wall being tested, a protective mechanism is used to protect the ultrasonic testing head to prevent it from colliding with other objects and to avoid damage to the ultrasonic testing head.

[0014] 3. The dust removal mechanism removes dust from the surface of the ultrasonic testing head, ensuring unobstructed ultrasonic wave propagation and improving the accuracy of the test results. Attached Figure Description

[0015] Figure 1This is a structural schematic diagram of the non-destructive testing tool for concrete strength in coal mine engineering proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the rotating mechanism of the non-destructive testing tool for concrete strength in coal mine engineering proposed in this utility model;

[0017] Figure 3 This is an exploded schematic diagram of the connecting seat, lead screw, and lead screw nut of the non-destructive testing tool for concrete strength in coal mine engineering proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the dust removal mechanism of the non-destructive testing tool for concrete strength in coal mine engineering proposed in this utility model;

[0019] Figure 5 This is an exploded view of the circular plate, annular plate, and annular sleeve of the non-destructive testing tool for concrete strength in coal mine engineering proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Caster wheel; 3. Turntable; 4. External gear ring; 5. Shaft; 6. Gear; 7. Connecting seat; 8. Slide groove; 9. First motor; 10. Second motor; 11. Lead screw; 12. Lead screw nut; 13. Hydraulic push rod; 14. Circular plate; 15. Ring plate; 16. Ring sleeve; 17. Fan; 18. Connecting pipe; 19. Ring pipe; 20. Branch pipe; 21. Ball bearing; 22. Ultrasonic detection head; 23. Slide rod; 24. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1 - Figure 5A non-destructive testing tool for concrete strength in coal mine engineering includes a base 1. Four casters 2 are installed at the bottom corners of the base 1 for easy movement of the device. A turntable 3 is rotatably connected to the top center of each caster 2. A rotating mechanism for rotating the turntable 3 is provided on the top of the base 1. A connecting seat 7 is fixed to the top center of the turntable 3. A groove 8 is formed on the side wall of the connecting seat 7. A hydraulic push rod 13 is installed on the top of the base 1. A lifting mechanism for raising and lowering the hydraulic push rod 13 is provided inside the groove 8. A circular plate 14 is fixed to the output end of the hydraulic push rod 13. An ultrasonic testing head 22 is fixed to the middle of the inner side wall of the circular plate 14. The function of the turntable 3 is to drive the hydraulic push rod 13 to rotate, thereby allowing the ultrasonic testing head 22 fixed on the circular plate 14 to rotate around it. The central axis rotates, the main purpose of which is to enable the ultrasonic detection head 22 to detect the wall at different angles, thereby improving the comprehensiveness and flexibility of the detection. The inner wall of the circular plate 14 is provided with a protective mechanism to protect the ultrasonic detection head 22, and the outer wall of the circular plate 14 is provided with a dust removal mechanism for removing dust from the ultrasonic detection head 22. During use, the ultrasonic detection head 22 is driven to rise, fall and move by the lifting mechanism in conjunction with the hydraulic push rod 13 and the circular plate 14, which can detect concrete walls of different heights. This eliminates the need for workers to frequently climb ladders, saving time and improving work efficiency. The protective mechanism protects the ultrasonic detection head 22 from collisions with other objects and prevents damage to the ultrasonic detection head 22.

[0023] Reference Figure 1 and Figure 2 In a preferred embodiment, the rotating mechanism includes an external gear ring 4, which is sleeved on the outer wall of the turntable 3. A rotating shaft 5 is rotatably connected to the top of the base 1, and a gear 6 is sleeved on the outer wall of the rotating shaft 5. A second motor 10 is fixed to the bottom of the base 1, and the output shaft of the second motor 10 is fixed to the rotating shaft 5. The second motor 10 drives the rotating shaft 5 to rotate, which in turn drives the turntable 3 to rotate in conjunction with the gear 6 and the external gear ring 4. This, in turn, drives the hydraulic push rod 13 to rotate. The rotation of the hydraulic push rod 13 drives the circular plate 14 and the ultrasonic detection head 22 to rotate, so that the ultrasonic detection head 22 can detect the wall at different angles, thereby improving the comprehensiveness and flexibility of the detection.

[0024] Reference Figure 1 and Figure 3In a preferred embodiment, the lifting mechanism includes a slide 8, a lead screw 11 is rotatably connected inside the slide 8, and a lead screw nut 12 is slidably connected to the inner side wall of the slide 8. The lead screw nut 12 is sleeved on the side wall of the lead screw 11, and the lead screw nut 12 and the lead screw 11 are adapted to each other. The lead screw nut 12 and the hydraulic push rod 13 are fixed. A first motor 9 is fixed on the top of the connecting seat 7, and the output shaft of the first motor 9 is fixed to the lead screw 11. The first motor 9 drives the lead screw 11 to rotate, which, together with the lead screw nut 12, drives the hydraulic push rod 13 to rise or fall along the direction of the slide 8, thereby driving the circular plate 14 and the ultrasonic detection head 22 to rise or fall simultaneously, so as to detect walls of different heights.

[0025] Reference Figure 4 and Figure 5 In a preferred embodiment, the protective mechanism includes an annular plate 15 disposed on the inner wall of a circular plate 14. An annular sleeve 16 is fixed to the inner wall of the annular plate 15, providing a protective structure for the ultrasonic detection head 22 to prevent it from colliding with other objects and reducing the risk of damage. Multiple sliding rods 23 are equidistantly arranged in a circular pattern on the outer wall of the circular plate 14, with one end of each sliding rod 23 fixed to the annular plate 15. Springs 24 are fitted onto the side walls of each sliding rod 23, with both ends of the springs 24 fixed to the circular plate 14 and the annular plate 15, respectively. Multiple ball bearings 21 are equidistantly arranged in a circular pattern on the outer wall of one end of the annular sleeve 16. The design of the ball bearings 21 reduces friction when in contact with the wall, which helps the device move more smoothly when approaching the wall. The hydraulic push rod 13 drives the circular plate 14 and ultrasonic detection head 22 to move closer to the wall being tested, avoiding resistance caused by friction and thus improving overall detection efficiency. This drives the circular plate 14 and ultrasonic detection head 22 until multiple balls 21 contact the wall. At this point, the hydraulic push rod 13 continues to drive the circular plate 14 and ultrasonic detection head 22 closer to the wall, causing the circular plate 14 to gradually approach the annular plate 15, compressing multiple springs 24 until the ultrasonic detection head 22 contacts the wall surface. When the multiple balls 21 no longer contact the wall, under the reaction force of the compressed springs 24, the circular plate 14 gradually moves away from the annular sleeve 16, placing the ultrasonic detection head 22 inside the annular sleeve 16. This prevents the ultrasonic detection head 22 from colliding with other objects during rotation and avoids damage to the ultrasonic detection head 22.

[0026] Reference Figure 1 and Figure 4In a preferred embodiment, the dust removal mechanism includes a fan 17, which is fixed to the outer wall of the circular plate 14. A connecting pipe 18 is fixed to the air outlet of the fan 17, and an annular pipe 19 is fixed to one end of the connecting pipe 18. Multiple branch pipes 20 are fixed in a circular pattern at equal intervals on the side wall of the annular pipe 19. The multiple branch pipes 20 distribute the air from the annular pipe 19 to the surface of the ultrasonic detection head 22, ensuring that the air is evenly blown to the detection head, thereby achieving a cleaning effect. One end of each of the multiple branch pipes 20 penetrates the inner wall of the annular sleeve 16, driving the fan 17 to draw outside air into the annular pipe 19 through the connecting pipe 18, and blow it onto the surface of the ultrasonic detection head 22 through the multiple branch pipes 20, blowing off dust and other debris adhering to the surface of the ultrasonic detection head 22, avoiding interference with the propagation of ultrasonic waves, and preventing changes in sound wave reflection and transmission, thereby improving the accuracy of the detection results.

[0027] The working principle of this embodiment is as follows: During use, the ultrasonic detection head 22 is pre-fixed on the side wall of the circular plate 14, and the device is moved to a designated position. During detection, the power switch of the first motor 9 is turned on, driving the first motor 9 to rotate the lead screw 11. In conjunction with the lead screw nut 12, the hydraulic push rod 13 is driven to rise or fall along the slide groove 8, thereby driving the circular plate 14 to rise or fall until the ultrasonic detection head 22 is moved to a designated height. At this time, the hydraulic push rod 13 is driven to move the circular plate 14 and the ultrasonic detection head 22 gradually closer to the wall being tested until the multiple balls 21 contact the wall. At this point, the hydraulic push rod 13 drives the circular plate 14 and the ultrasonic detection head 22 to continue moving closer to the wall, causing the circular plate 14 to gradually approach the annular plate 15, compressing all the springs 24 until the ultrasonic detection head 22 contacts the wall surface. Then, the power switch of the ultrasonic detection head 22 is turned on to inspect the concrete wall. During inspection, the base 1 is simply pushed to move along the wall direction. This eliminates the need for workers to frequently climb ladders, saving inspection time and improving work efficiency. When inspecting another wall, the power switch of the second motor 10 is turned on to drive... The second motor 10 drives the rotating shaft 5 to rotate, which, in conjunction with the gear 6 and the external gear ring 4, drives the turntable 3 to rotate, which in turn drives the hydraulic push rod 13 to rotate. The rotation of the hydraulic push rod 13 drives the circular plate 14 and the ultrasonic detection head 22 to rotate, enabling the ultrasonic detection head 22 to detect the wall at different angles, thereby improving the comprehensiveness and flexibility of the detection. During the rotation of the ultrasonic detection head 22, when the multiple balls 21 are no longer in contact with the wall, under the reaction action of the multiple compressed springs 24, the circular plate 14 gradually moves away from the annular sleeve 16, so that the ultrasonic detection head 22 is inside the annular sleeve 16, preventing it from rotating out of contact with the wall. During the process, the ultrasonic detection head 22 will collide with other objects to prevent damage. The power switch of the ventilation fan 17 is turned on, and the fan 17 is driven to draw outside air into the annular pipe 19 through the connecting pipe 18. The air is then blown onto the surface of the ultrasonic detection head 22 through multiple branch pipes 20, blowing off dust and other debris adhering to the surface of the ultrasonic detection head 22. This prevents the air from interfering with the propagation of ultrasonic waves and causing changes in sound wave reflection and transmission, thereby improving the accuracy of the detection results. When the ultrasonic detection head 22 is perpendicular to the wall, the above actions are repeated to perform detection work on another wall.

[0028] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A non-destructive testing tool for concrete strength in coal mine engineering, comprising a base (1), characterized in that, The base (1) is equipped with casters (2) at the four corners of the bottom. A turntable (3) is rotatably connected to the top center of the casters (2). The base (1) is provided with a rotating mechanism for rotating the turntable (3). A connecting seat (7) is fixed at the top center of the turntable (3). A sliding groove (8) is provided on the side wall of the connecting seat (7). A hydraulic push rod (13) is provided on the top of the base (1). A lifting mechanism for raising and lowering the hydraulic push rod (13) is provided inside the sliding groove (8). A circular plate (14) is fixed at the output end of the hydraulic push rod (13). An ultrasonic detection head (22) is fixed at the center of the inner side wall of the circular plate (14). A protective mechanism for protecting the ultrasonic detection head (22) is provided on the inner side wall of the circular plate (14). A dust removal mechanism for removing dust from the ultrasonic detection head (22) is provided on the outer side wall of the circular plate (14).

2. The non-destructive testing tool for concrete strength in coal mine engineering according to claim 1, characterized in that, The rotating mechanism includes an external gear ring (4), which is sleeved on the outer side wall of the turntable (3). The top of the base (1) is rotatably connected to a rotating shaft (5), and a gear (6) is sleeved on the outer side wall of the rotating shaft (5). The bottom of the base (1) is fixed with a second motor (10), and the output shaft of the second motor (10) is fixed to the rotating shaft (5).

3. The non-destructive testing tool for concrete strength in coal mine engineering according to claim 1, characterized in that, The lifting mechanism includes a slide groove (8), a lead screw (11) is rotatably connected inside the slide groove (8), a lead screw nut (12) is slidably connected to the inner side wall of the slide groove (8), the lead screw nut (12) is sleeved on the side wall of the lead screw (11), and the lead screw nut (12) and the lead screw (11) are adapted to each other. The lead screw nut (12) and the hydraulic push rod (13) are fixed. A first motor (9) is fixed on the top of the connecting seat (7), and the output shaft of the first motor (9) is fixed to the lead screw (11).

4. The non-destructive testing tool for concrete strength in coal mine engineering according to claim 1, characterized in that, The protective mechanism includes an annular plate (15), which is disposed on the inner side wall of a circular plate (14). An annular sleeve (16) is fixed to the inner side wall of the annular plate (15). Multiple sliding rods (23) are arranged in a circular pattern at equal intervals on the outer side wall of the circular plate (14). One end of each sliding rod (23) is fixed to the annular plate (15). Springs (24) are sleeved on the side walls of each sliding rod (23). The two ends of each spring (24) are fixed to the circular plate (14) and the annular plate (15) respectively.

5. The non-destructive testing tool for concrete strength in coal mine engineering according to claim 4, characterized in that, The outer wall of one end of the annular sleeve (16) is equipped with multiple balls (21) at equal intervals in a circular pattern.

6. The non-destructive testing tool for concrete strength in coal mine engineering according to claim 1, characterized in that, The dust removal mechanism includes a fan (17), which is fixed on the outer wall of the circular plate (14). A connecting pipe (18) is fixed to the air outlet of the fan (17). An annular pipe (19) is fixed to one end of the connecting pipe (18). Multiple branch pipes (20) are fixed in a circular pattern at equal intervals on the side wall of the annular pipe (19), and one end of each branch pipe (20) passes through the inner wall of the annular sleeve (16).

Images