Concrete quality detection device for constructional engineering

Abstract

The invention discloses a concrete quality detection device for constructional engineering, which belongs to the technical field of constructional engineering, and comprises a main shell, the top of the main shell is fixedly provided with a display screen for displaying numerical values, and the outer wall of the main shell is fixedly connected with a grip convenient for a worker to grasp; the bottom of the grip is fixedly connected with a supporting frame used for positioning the device, a drill bit used for detecting the quality of concrete is installed in an inner cavity of the main shell, the inner cavity of the main shell is rotationally connected with a sleeve shell used for driving the drill bit to rotate, the concrete is placed on a plane, the drill bit is rotated to be inserted into a concrete block and pulled out upwards, and the drill bit is driven by the sleeve shell to rotate. According to the concrete quality detection device, the concrete quality can be rapidly judged through simple operation of placing the concrete, rotating the drill bit to be inserted and pulled out and observing the pulling force, so that the situation that a specific shape is needed when the concrete is detected is avoided, and the detection cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, in particular to a concrete quality detection device for construction engineering. Background Art

[0002] As one of the main materials for building structures, the quality of concrete is directly related to the safety and durability of buildings. Therefore, in construction projects, the role of concrete quality testing is crucial. Through testing, key performance indicators such as concrete strength, durability and workability can be evaluated to ensure that the quality of concrete meets relevant standards and design requirements.

[0003] After massive searches, it was found that the prior art publication number is CN217033940U, which discloses a concrete quality detection device for construction projects, including a box body, a placing plate is independently arranged horizontally in the box body, a lifting assembly for moving the placing plate up and down is installed in the box body at the bottom of the placing plate, a collecting box for placing concrete specimens is arranged on the top of the placing plate, a pressing plate is horizontally arranged on the top of the collecting box, a supporting frame is installed on the top of the box body, a digital micrometer is fixed on the supporting frame, a first through hole communicating with the box body is opened on the top of the box body, the bottom end of the measuring rod of the digital micrometer independently passes through the first through hole and is fixed on the top of the pressing plate, and a channel for the concrete specimen to pass through is opened on the front side of the box body.

[0004] Therefore, based on the above search and in combination with the existing, when using the above-mentioned device to inspect the quality of concrete block extrusion, in order to ensure the accuracy of the inspection, specific requirements are placed on the size and shape of the concrete. Therefore, when using the above-mentioned device to inspect the concrete of the project, it is necessary to additionally produce concrete blocks of specific shapes, which not only increases the limitations of the equipment and makes it impossible to inspect concrete blocks of different shapes and sizes according to the specific conditions on the construction site, but also because the inspected concrete blocks are specially made, their shapes and sizes may be different from the concrete blocks in the actual project, thereby reducing the accuracy of the inspection. Therefore, the present invention provides a concrete quality inspection device for construction projects to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a concrete quality detection device for construction engineering to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising a main shell, a display screen for displaying numerical values ​​is fixedly installed on the top of the main shell, a handle for workers to grasp is fixedly connected to the outer wall of the main shell, a support frame for positioning the device is fixedly connected to the bottom of the handle, a drill bit for detecting concrete quality is installed in the inner cavity of the main shell, a sleeve shell for driving the drill bit to rotate is rotatably connected to the inner cavity of the main shell, a driving assembly for driving the sleeve shell to rotate is installed on the outer wall of the sleeve shell, and a sliding shell for driving the upper end of the drill bit to move upward is slidably connected inside the sleeve shell;

[0007] A sphere is slidably connected inside the drill bit, and the sphere pops out to press against the inner wall of the hole, thereby increasing the stability of the drill bit. A pressure probe for detecting the quality of concrete is installed inside the sphere. A pushing structure for pushing the sphere to pop out is also installed inside the drill bit, and the sphere is pulled back and reset by the pushing structure when resetting. An annular spring plate for driving the pushing structure is slidably connected to the outer wall of the drill bit.

[0008] Furthermore, the pushing structure includes a sliding rod, the outer wall of the sliding rod is slidably installed in the inner cavity of the drill bit, the bottom of the sliding rod is fixedly connected with a pushing block for pushing the ball to pop out, the top of the sliding rod is rotatably connected with a connecting block, and the top of the connecting block is fixedly connected with a pull rope for pulling the connecting block upward.

[0009] Furthermore, the inner cavity of the drill bit is provided with an annular groove, the top of the annular groove is provided with a concave point, the inside of the concave point is slidably connected with an insertion rod, and two groups of the insertion rods are provided and are respectively fixedly connected to the two ends of the outer wall of the connecting block.

[0010] Furthermore, the outer wall of the sliding rod is provided with three groups of spherical grooves, the interior of the spherical groove is fixedly connected with a magnetic block 1 for attracting the sphere to reset, and the interior of the sphere is fixedly installed with a magnetic block 2 for attracting the magnetic block.

[0011] Furthermore, the drive assembly includes gear one, the bottom of which is rotatably connected to the inner cavity of the main shell, the inner cavity of the main shell is provided with a circular groove for providing rotation of gear one, the outer wall of the sleeve shell is fixedly connected with a plurality of groups of gear blocks, and the gear block shaft array is fixedly connected to the outer wall of the sleeve shell and meshes with gear one.

[0012] Furthermore, a ventilation groove for gas flow is provided inside the sliding shell, and an air outlet groove for gas outflow is provided in the inner cavity of the sleeve shell.

[0013] Furthermore, the top of the gear one is rotatably connected to a roller, the inner cavity of the roller is provided with a special-shaped slot for connection, the inner cavity of the special-shaped slot is slidably connected to a special-shaped plug-in block, and the outer shape of the special-shaped plug-in block is consistent with the internal shape of the special-shaped slot, and the bottom of the special-shaped plug-in block is fixedly connected to the top of the gear one through a fixed shaft.

[0014] Furthermore, the top of the roller is fixedly connected to gear 2, the top of the inner cavity of the main shell is rotatably connected to gear 3, the bottom of the gear 3 is fixedly connected to a threaded rod for driving the sliding shell to rotate, and the threaded rod passes through the sleeve and is threadedly connected to the inside of the sliding shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention places concrete on a plane, inserts a drill into a concrete block by rotating it, and pulls it out upwards, and determines the quality of the concrete by the pulling force generated when the drill pulls the ball upwards. The present invention can quickly determine the quality of the concrete through simple operations of placing concrete, rotating the drill to insert it, pulling it out, and observing the pulling force, thereby avoiding the need for a specific shape when testing concrete, thereby reducing the testing cost.

[0017] 2. The present invention provides a sphere so that when the drill bit is pulled out, the sphere pops out and abuts against the inner wall of the hole, thereby increasing the resistance of the drill bit and improving the stability of the drill bit, avoiding the problem of slipping during the pulling out process, which affects the detection result and requires secondary detection.

[0018] 3. The present invention provides annular grooves and concave points so that after the ball pops out, the concave points use the insertion rod to limit the height of the connecting block and the push block, so that the push block continues to squeeze and limit the ball, thereby avoiding the ball from retracting into the inside of the drill bit due to the extrusion force generated when the concrete is pulled out during the extraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a concrete quality detection device for construction engineering;

[0020] Figure 2 This is a structural schematic diagram of a display screen in a concrete quality detection device for construction engineering;

[0021] Figure 3 It is a structural schematic diagram of a threaded rod in a concrete quality detection device for construction engineering;

[0022] Figure 4 It is a structural schematic diagram of a drill bit in a concrete quality detection device for construction engineering;

[0023] Figure 5It is a structural schematic diagram of a sliding block in a concrete quality detection device for construction engineering;

[0024] Figure 6 It is a schematic diagram of the structure of a sphere in a concrete quality detection device for construction engineering;

[0025] Figure 7 It is a structural schematic diagram of an annular groove in a concrete quality detection device for construction engineering;

[0026] Figure 8 It is a structural schematic diagram of a gear 1 in a concrete quality detection device for construction engineering;

[0027] Fig. 9 It is a structural schematic diagram of a roller in a concrete quality detection device for construction engineering;

[0028] Fig.10 The present invention is a schematic diagram of a module in a concrete quality detection device for construction engineering.

[0029] In the figure: 1, main shell; 2, sleeve shell; 3, drill bit; 4, driving assembly; 5, sliding shell; 6, pushing structure; 7, handle; 8, support frame; 9, display screen; 301, sphere; 302, annular spring plate; 303, spring; 304, square groove; 305, sliding block; 306, arc plate; 307, circular groove; 401, gear 1; 402, gear block; 403, slide groove; 404, sliding bar; 405, Circular groove; 501, ventilation groove; 502, air outlet groove; 503, roller; 504, special-shaped slot; 505, special-shaped plug-in block; 506, gear two; 507, gear three; 508, threaded rod; 601, sliding rod; 602, push block; 603, connecting block; 604, pull rope; 605, connecting shaft; 606, spherical groove; 607, magnetic block one; 608, annular groove; 609, concave point; 610, plug-in rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1-Figure 10, a concrete quality detection device for construction engineering, comprising a main shell 1, the main shell 1 is hinged by two semicircles through bolts, a display screen 9 for displaying numerical values ​​is fixedly installed on the top of the main shell 1, and a processing module for processing and calculating numerical values ​​is installed inside the display screen 9, a handle 7 for facilitating workers to grasp is fixedly connected to the outer wall of the main shell 1, and the device is helped to stand by holding the handle 7, a support frame 8 for positioning the device is fixedly connected to the bottom of the handle 7, and two groups of support frames 8 are provided, and the ends of the two groups of support frames 8 close to each other are respectively fixedly connected to the two ends of the outer wall of the main shell 1, a drill bit 3 for detecting concrete quality is installed in the inner cavity of the main shell 1, the inner cavity of the main shell 1 is rotatably connected to a sleeve shell 2 for driving the drill bit 3 to rotate through a bearing, a driving assembly 4 for driving the sleeve shell 2 to rotate is installed on the outer wall of the sleeve shell 2, and a sliding shell 5 for moving one end of the drill bit 3 upward is slidably connected inside the sleeve shell 2;

[0032] The drill bit 3 is slidably connected with a ball 301 inside, and the ball 301 pops out and contacts the inner wall of the hole to increase the stability of the drill bit 3. A pressure probe for detecting the quality of concrete is installed inside the ball 301. After the ball 301 pops out and contacts the concrete through the pressure probe, the tension generated when the drill bit 3 is moved up and pulled out is recorded, so as to evaluate the quality of the concrete through this tension data. A pushing structure 6 for pushing the ball 301 to pop out is also installed inside the drill bit 3. When the pushing structure 6 is reset, the ball 301 is pulled back and reset. The outer wall of the drill bit 3 is slidably connected with an annular spring plate 302 for driving the pushing structure 6.

[0033] See also Figure 5 The inner cavity of the drill bit 3 is provided with circular grooves 307 for the balls 301 to slide. The circular grooves 307 are provided in three groups and are distributed in an annular shape. The balls 301 are located in the circular grooves 307 respectively.

[0034] Specifically, the annular spring plate 302 is slidably connected to the inner wall of the sliding shell 5. When the drill bit 3 drills into the concrete until the annular spring plate 302 contacts the concrete, it continues to rotate downward, thereby squeezing the annular spring plate 302, so that the annular spring plate 302 retracts into the sliding shell 5. The annular spring plate 302 can drive the pushing structure 6 to push the sphere 301 to pop out, and after closing the drill bit 3 to stop rotating, the drill bit 3 is fixed in the hole by the sphere 301, so that when the sliding shell 5 pulls the drill bit 3 upward to be pulled out, the quality of the concrete can be judged by the pressure generated during the pulling out.

[0035] See also Figure 4-Figure 6A spring 303 for pulling the annular spring plate 302 downward and resetting is slidably installed inside the sliding shell 5. The inner cavity of the drill bit 3 is provided with six groups of square grooves 304 for the sliding of the annular spring plate 302. The bottom of the spring 303 is fixedly connected to the bottom of the inner cavity of the square groove 304. Six sliding blocks 305 are slidably connected inside the square groove 304. The six sliding blocks 305 are grouped into two, and three groups of arc plates 306 are fixedly connected at one end away from the drill bit 3. The outer walls of the three groups of arc plates 306 are fixedly connected with an annular connecting plate, and the bottom of the annular connecting plate is fixedly connected to the top of the spring 303, and the top of the annular spring plate 302 is fixedly connected to the bottom of the arc plate 306.

[0036] See also Figure 4-Figure 7 The pushing structure 6 includes a sliding rod 601, the outer wall of which is slidably installed in the inner cavity of the drill bit 3, the bottom of the sliding rod 601 is fixedly connected with a pushing block 602 for pushing the ball 301 to pop out, the top of the sliding rod 601 is rotatably connected with a connecting block 603 through a pin shaft, the top of the connecting block 603 is fixedly connected with a pull rope 604 for pulling the connecting block 603 upward, the top of the pull rope 604 is fixedly connected with a connecting shaft 605, and the top of the pull rope 604 is fixedly connected with the intersection of the six sliding blocks 305 through the connecting shaft 605, so that when the annular spring plate 302 moves upward, under the action of the arc plate 306 and the sliding block 305, the pull rope 604 pulls the connecting block 603 to move upward.

[0037] See also Figure 4-Figure 7 The inner cavity of the drill bit 3 is provided with an annular groove 608, and a concave point 609 is provided at the top of the annular groove 608. An insertion rod 610 is slidably connected inside the concave point 609. There are two groups of insertion rods 610, which are respectively fixedly connected to the two ends of the outer wall of the connecting block 603. Then, when the connecting block 603 drives the insertion rod 610 to move up to the vertex inside the annular groove 608, it will slide down to the inside of the concave point 609 under the action of gravity, so that the concave point 609 uses the insertion rod 610 to limit the height of the connecting block 603 and the push block 602, and pulls the connecting block 603 again to drive the insertion rod 610 to move up inside the concave point 609 and relax, so that when the insertion rod 610 moves down again due to the action of gravity, it drives the connecting block 603 to slide downward inside the annular groove 608 and reset through the annular groove 608.

[0038] See also Figure 4-Figure 7The outer wall of the sliding rod 601 is provided with three groups of spherical grooves 606, and the inner diameter of the spherical groove 606 is larger than the sphere 301. The interior of the spherical groove 606 is fixedly connected with a magnetic block 1 607 for attracting the sphere 301 to reset. The interior of the sphere 301 is fixedly installed with a magnetic block 2 for attracting the magnetic block 1 607. When the sliding rod 601 moves down to the height of the spherical groove 606 and the circular groove 307 are the same, the sphere 301 is affected by the internal magnetic block 2 to roll into the spherical groove 606, and approaches the magnetic block 1 607, and fits inside the spherical groove 606 to complete the reset.

[0039] Example 2: Please refer to Figure 2-Figure 3 and Figure 8-Figure 9 , a concrete quality detection device for construction engineering, which is different from Example 1 in that the driving assembly 4 includes a gear 401, the bottom of the gear 401 is rotatably connected to the inner cavity of the main shell 1 through a bearing, the inner cavity of the main shell 1 is provided with a circular groove 405 for providing rotation of the gear 401, and the inner cavity of the circular groove 405 is slidably connected with a circular baffle, and the top of the circular baffle is fixedly connected to the bottom of the gear 401, the outer wall of the casing 2 is fixedly connected with a plurality of groups of tooth blocks 402, and the axial array of the tooth blocks 402 is fixedly connected to the outer wall of the casing 2 and meshes with the gear 401;

[0040] A motor for driving gear 401 to rotate is fixedly installed in the inner cavity of the main shell 1, and the output shaft of the motor is fixedly connected to the axis point of gear 401 through a telescopic shaft, so that the output shaft of the motor drives gear 401 to rotate, so that gear 401 pushes the gear block 402 to drive the casing 2 and the drill bit 3 to rotate.

[0041] Example 3: Please refer to Figure 2-Figure 3 and Figure 8-Figure 9 , a concrete quality detection device for construction engineering, which is different from Example 1 in that a vent groove 501 for gas flow is opened inside the sliding shell 5, and an outlet groove 502 for gas escape is opened in the inner cavity of the casing 2, so that when the annular spring plate 302 enters the interior of the sliding shell 5, the gas is squeezed and pushed into the interior of the square groove 304, and continuously moves upward through the vent groove 501 into the inner cavity of the casing 2, and enters the interior of the circular groove 405 through the outlet groove 502, so that the gas pushes the circular baffle to drive the gear 1 401 to move upward.

[0042] See also Figure 8-Figure 9The top of gear 401 is rotatably connected with roller 503, and the inner cavity of roller 503 is provided with a special-shaped slot 504 for connection, and the inner cavity of special-shaped slot 504 is slidably connected with special-shaped plug 505, and the outer shape of special-shaped plug 505 is consistent with the inner shape of special-shaped slot 504, and the bottom of special-shaped plug 505 is fixedly connected to the top of gear 1 401 through a fixed shaft, so that when gear 1 401 moves up, the special-shaped plug 505 is pushed to be inserted into the inside of the special-shaped slot 504 through the fixed shaft, and when gear 1 401 rotates, it drives roller 503 to rotate, and the special-shaped plug 505 is designed to be pointed at the top and wide at the bottom, so it is convenient for the special-shaped plug 505 to be inserted into the inside of the special-shaped slot 504 to complete the docking.

[0043] See also Figure 3 , Figure 8-Figure 9 The top of the roller 503 is fixedly connected with a gear 2 506, the top of the gear 2 506 is rotatably connected to the top of the inner cavity of the main shell 1 through a bearing, the top of the inner cavity of the main shell 1 is rotatably connected with a gear 3 507 through a bearing, the bottom of the gear 3 507 is fixedly connected with a threaded rod 508 for driving the sliding shell 5 to rotate, and the threaded rod 508 penetrates the casing 2 and is threadedly connected to the inside of the sliding shell 5, so that the sliding shell 5 pulls the drill bit 3 up in the inner cavity of the casing 2, and pulls the drill bit 3 out of the concrete, and a round groove with a diameter larger than the threaded rod 508 is opened inside the casing 2, and the threaded rod 508 is inserted into the inner cavity of the round groove;

[0044] The inner cavity of the sleeve shell 2 is provided with six groups of slide grooves 403 for limiting the sliding shell 5. The six groups of slide grooves 403 are internally slidably connected with sliding bars 404. The six groups of sliding bars 404 are fixedly connected to the outer wall of the sliding shell 5 in an axial array. Therefore, when the sliding shell 5 drives the sliding bars 404 to slide downward, the slide grooves 403 are used to provide the sliding bars 404 to limit the sliding shell 5, thereby preventing the sliding shell 5 from continuing to move downward and causing the sliding shell 5 to separate from the inner cavity of the sleeve shell 2.

[0045] The working principle of the present invention is as follows: first, concrete is placed on a plane, and the handle 7 is grasped to ensure that the device is vertical, and then the motor is driven to make its output shaft drive the gear 1 401 to rotate, so that the gear 1 401 pushes the tooth block 402 to drive the sleeve 2 and the drill bit 3 to rotate, so that the drill bit 3 is inserted into the concrete. When the drill bit 3 drills into the concrete until the annular spring plate 302 contacts the concrete, it continues to rotate downward, thereby squeezing the annular spring plate 302, so that the annular spring plate 302 retracts into the sliding shell 5, and the annular spring plate 30 The sliding block 305 pulls the connecting shaft 605 and the pushing block 602 upward, so that the pushing block 602 pushes the ball 301 to pop out and abut against the inside of the hole. At the same time, the connecting shaft 605 also drives the connecting block 603 to drive the insertion rod 610 to move upward to the inner vertex of the annular groove 608. The insertion rod 610 slides downward to the inside of the concave point 609 due to the effect of gravity, so that the concave point 609 uses the insertion rod 610 to limit the height of the connecting block 603 and the pushing block 602, so that the pushing block 602 continues to squeeze and limit the ball 301;

[0046] At the same time, when the annular spring plate 302 moves upward and enters the interior of the sliding shell 5, it can squeeze the gas in the sliding shell 5, and then push the gas inside the sliding shell 5 into the interior of the square groove 304, and continue to move upward through the ventilation groove 501 into the inner cavity of the sleeve shell 2, and enter the interior of the circular groove 405 through the gas outlet groove 502, so that the gas pushes the circular baffle to drive the gear 1 401 to move upward. When the gear 1 401 moves upward, the fixed shaft pushes the special-shaped plug 505 to be inserted into the interior of the special-shaped slot 504, so that when the gear 1 401 rotates, it drives The roller 503 rotates and rotates with the gear 2 506, so that the gear 2 506 drives the gear 3 507 and the threaded rod 508 to rotate, so that the threaded rod 508 pulls the sliding shell 5 in the inner cavity of the sleeve shell 2 to pull the drill bit 3 upward, and the drill bit 3 is pulled out of the concrete. During the pulling-out process, the pressure probe inside the sphere 301 can be used to record the tension generated when the drill bit 3 pulls the sphere 301 upward, which is then recorded and processed by the processing module and displayed on the display screen 9, so that the staff can evaluate the quality of the concrete by viewing the tension data.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A concrete quality detection device for construction engineering, comprising a main housing (1), characterized in that: A display screen (9) for displaying numerical values ​​is fixedly mounted on the top of the main shell (1); a handle (7) for facilitating workers to grip is fixedly connected to the outer wall of the main shell (1); a support frame (8) for positioning the device is fixedly connected to the bottom of the handle (7); a drill bit (3) for detecting the quality of concrete is mounted in the inner cavity of the main shell (1); a sleeve (2) for driving the drill bit (3) to rotate is rotatably connected to the inner cavity of the main shell (1); a driving assembly (4) for driving the sleeve (2) to rotate is mounted on the outer wall of the sleeve (2); and a sliding shell (5) for moving one end of the drill bit (3) upward is slidably connected to the interior of the sleeve (2); The drill bit (3) is slidably connected to a sphere (301) inside, and the sphere (301) pops out to abut against the inner wall of the hole, thereby increasing the stability of the drill bit (3). A pressure probe for detecting the quality of concrete is installed inside the sphere (301). A pushing structure (6) for pushing the sphere (301) to pop out is also installed inside the drill bit (3). When resetting, the pushing structure (6) pulls the sphere (301) back to reset. The outer wall of the drill bit (3) is slidably connected to an annular spring plate (302) for driving the pushing structure (6).

2. A concrete quality detection device for construction engineering according to claim 1, characterized in that: The pushing structure (6) comprises a sliding rod (601), the outer wall of which is slidably mounted in the inner cavity of the drill bit (3), the bottom of the sliding rod (601) is fixedly connected with a pushing block (602) for pushing the ball (301) to pop out, the top of the sliding rod (601) is rotatably connected with a connecting block (603), and the top of the connecting block (603) is fixedly connected with a pull rope (604) for pulling the connecting block (603) upward.

3. A concrete quality detection device for construction engineering according to claim 2, characterized in that: The inner cavity of the drill bit (3) is provided with an annular groove (608), the top of the annular groove (608) is provided with a concave point (609), the interior of the concave point (609) is slidably connected with an insertion rod (610), and two groups of the insertion rods (610) are provided and are respectively fixedly connected to the two ends of the outer wall of the connecting block (603).

4. A concrete quality detection device for construction engineering according to claim 3, characterized in that: The outer wall of the sliding rod (601) is provided with three groups of spherical grooves (606), the interior of the spherical groove (606) is fixedly connected with a magnetic block 1 (607) for attracting the sphere (301) to reset, and the interior of the sphere (301) is fixedly installed with a magnetic block 2 for attracting the magnetic block 1 (607).

5. A concrete quality detection device for construction engineering according to claim 1, characterized in that: The driving assembly (4) comprises a gear one (401), the bottom of which is rotatably connected to the inner cavity of the main housing (1), the inner cavity of the main housing (1) is provided with a circular groove (405) for providing rotation of the gear one (401), the outer wall of the sleeve housing (2) is fixedly connected with a plurality of groups of tooth blocks (402), and the axial array of the tooth blocks (402) is fixedly connected to the outer wall of the sleeve housing (2) and meshes with the gear one (401).

6. A concrete quality detection device for construction engineering according to claim 1, characterized in that: The interior of the sliding shell (5) is provided with a ventilation groove (501) for gas flow, and the inner cavity of the sleeve shell (2) is provided with a gas outlet groove (502) for gas escape.

7. A concrete quality detection device for construction engineering according to claim 5, characterized in that: The top of the gear one (401) is rotatably connected to a roller (503), the inner cavity of the roller (503) is provided with a special-shaped slot (504) for connection, the inner cavity of the special-shaped slot (504) is slidably connected to a special-shaped plug-in block (505), and the outer shape of the special-shaped plug-in block (505) is consistent with the internal shape of the special-shaped slot (504), and the bottom of the special-shaped plug-in block (505) is fixedly connected to the top of the gear one (401) through a fixed shaft.

8. A concrete quality detection device for construction engineering according to claim 7, characterized in that: The top of the roller (503) is fixedly connected to a gear 2 (506), the top of the inner cavity of the main shell (1) is rotatably connected to a gear 3 (507), the bottom of the gear 3 (507) is fixedly connected to a threaded rod (508) for driving the sliding shell (5) to rotate, and the threaded rod (508) passes through the sleeve shell (2) and is threadedly connected to the inside of the sliding shell (5).

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