Sampling device for constructional engineering quality detection

Abstract

The invention discloses a sampling device for constructional engineering quality detection, relates to the technical field of detection and sampling, and solves the problems that muddy water and chippings splash to equipment and operators under the action of centrifugal force to cause smudginess of the equipment and clothes, and the muddy water and chippings possibly splash to the eyes of the operators in severe cases to cause damage to the eyes of the operators. The device comprises a bottom frame, a machine frame is fixedly installed at the upper end of the bottom frame, a threaded rod is rotatably installed on the machine frame, the lower end of the threaded rod is rotatably connected with the bottom frame through a bearing, the outer side of the threaded rod is sleeved with a lifting base in a threaded mode, and the lifting base and the machine frame are connected in a sliding mode; a drill bit is rotationally mounted on the front side of the lifting seat; a universal wheel is mounted on the underframe close to the right end of the underframe; by installing the protection assembly, operators and equipment can be protected in the drilling and sampling process of the drill bit, and muddy water generated in the drilling process is prevented from splashing to the bodies of the equipment and the operators.

Description

Technical Field

[0001] The present invention relates to the technical field of detection sampling, and particularly to a sampling device for building engineering quality detection. Background Art

[0002] ‌The concrete core drill‌ is one of the sampling devices for building engineering quality detection. It is used to drill test cores of materials such as concrete and asphalt concrete, and is mainly used for equipment for compressive and flexural tests. It is widely used in core sampling work of cement concrete and asphalt concrete for highways, airports, ports, docks, dams, etc.

[0003] When the concrete core drill is working, in order to prevent a large amount of heat from being generated due to the friction between the drill bit and the rock or concrete, when the drill bit of the core drill rotates to drill a hole, water will flow out of the drill bit, and the heat will be carried away by the flow of water, which can prevent the drill bit from being damaged due to overheating. However, in the actual use process, when the core drill is working, the high-speed rotating drill bit will generate centrifugal force, throwing out the cut debris and muddy water outward to form splashes. These muddy water and debris will splash onto the equipment and the operator's body under the action of centrifugal force, causing the equipment and clothes to be soiled. In severe cases, the muddy water and debris may also splash into the operator's eyes, causing safety accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide a sampling device for building engineering quality detection to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A sampling device for building engineering quality detection, including a chassis. A frame is fixedly installed at the upper end of the chassis. A threaded rod is rotatably installed on the frame, and the lower end of the threaded rod is rotatably connected to the chassis through a bearing. A lifting seat is threadedly sleeved on the outer side of the threaded rod, and the connection mode between the lifting seat and the frame is a sliding connection. A drill bit is rotatably installed on the front side of the lifting seat. A universal wheel is installed near the right end of the chassis, and the universal wheel can be folded through a bracket. It further includes a protection component for preventing muddy water from splashing during the drilling process, and the protection component is installed under the drill bit; a grid support plate for preventing the concrete sample core from falling into the drill hole, and the grid support plate is installed on the upper side of the protection component; a knocking component for assisting the concrete sample core to break away from the drill bit, and the knocking component is installed on the outer side of the drill bit. The number of the knocking components is two groups and they are symmetrically distributed; a driving component for driving the grid support plate to rotate, and the driving component is installed between the grid support plate and the threaded rod.

[0006] Preferably, the protection component includes a protective cover fixedly installed on the chassis, and the inner diameter of the upper port of the protective cover is greater than the outer diameter of the drill bit. A plurality of through holes are equidistantly distributed on the outer side of the protective cover. A water shield is fixedly sleeved on the outer side of the protective cover, and the water shield covers the outer sides of the plurality of through holes.

[0007] Preferably, the driving component includes an internal gear ring fixedly installed at the right end of the grille support plate. A limiting ring is fixedly sleeved on the outer side of the internal gear ring near its lower end. A support seat is movably sleeved on the outer side of the limiting ring, and the internal gear ring is rotationally connected to the support seat through the limiting ring. A positioning wheel is fixedly sleeved on the outer side of the support seat, and the positioning wheel is located inside the internal gear ring.

[0008] Preferably, an external gear ring is movably sleeved on the outer side of the positioning wheel, and the connection mode between the external gear ring and the internal gear ring is meshing connection. A plurality of connection components are installed between the positioning wheel and the external gear ring at circumferential equal intervals. The connection component includes a sleeve fixedly embedded in the positioning wheel, and a pin rod is movably embedded at one end of the sleeve close to the external gear ring.

[0009] Preferably, a hemispherical portion is provided at one end of the pin rod close to the external gear ring. A gasket is fixedly connected to one end of the pin rod located inside the sleeve. A first spring is movably abutted against one side of the gasket away from the pin rod, and one end of the first spring away from the gasket is movably abutted against the sleeve. A plurality of hemispherical card slots equal in number to the connection components are formed on the inner wall of the external gear ring, and the hemispherical portion of the pin rod is movably clamped with the external gear ring through the hemispherical card slots. Two symmetrically distributed limiting rods are fixedly installed on the support seat corresponding to the outer side of the grille support plate, and the connection mode between the grille support plate and the limiting rods is movable abutment.

[0010] Preferably, the knocking component includes a guide rail fixedly installed at the upper end of the chassis. Two symmetrically distributed sprockets are rotatably installed inside the guide rail. A chain is installed in cooperation with the outer sides of the sprockets. Two symmetrically distributed inclined support frames are fixedly installed on the outer side of the guide rail. A short connecting rod is rotatably installed inside the two inclined support frames, and the short connecting rod is close to the end of the inclined support frame away from the guide rail.

[0011] Preferably, a knocking ball is fixedly connected to one end of the short connecting rod close to the drill bit. A stop rod is fixedly connected to the end of the short connecting rod away from the knocking ball, and the included angle between the stop rod and the short connecting rod is an obtuse angle. An arc-shaped spring is fixedly installed on the upper side of the stop rod. One end of the arc-shaped spring away from the stop rod is fixedly connected to a positioning plate, and the positioning plate is fixedly connected to the inclined support frame.

[0012] Preferably, a driving plate is fixedly installed on the outer side of the chain, and the connection between the driving plate and the lifting seat is a fixed connection. A plurality of equally spaced hinge seats are also fixedly installed on the outer side of the chain. A baffle is rotatably installed on the inner side of the hinge seat through a connecting shaft. The connection between the baffle and the baffle rod is a movably abutted connection. The lower side of the baffle is movably abutted against a limiting plate, and the limiting plate and the hinge seat are an integrally formed structure. Two symmetrically distributed coil springs are fixedly sleeved on the outer side of the connecting shaft, and the outer end of the coil spring is fixedly connected to the hinge seat.

[0013] Preferably, two symmetrically distributed bending links are hingedly installed on the outer side of the base frame, and a roller is rotatably installed on the end of the bending link away from its hinge point, and a limiting support block is movably abutted against the lower side of the end of the bending link away from the roller, and the limiting support block is fixedly connected to the base frame, and a positioning assembly is installed on the upper side of the bending link, and the positioning assembly includes a pin plate movably abutted against the bending link, and the pin plate is slidably connected to the base frame through a limiting straight groove.

[0014] Preferably, the end of the pin plate away from the bending connecting rod is fixedly connected to the optical axis, and the connection between the optical axis and the base frame is a plug-in connection, the two optical axes are fixedly connected via a long connecting rod, the end of the optical axis away from the pin plate is fixedly connected to a push plate, a movable plate is fixedly installed on the outer side of the push plate, and the lower end surface of the movable plate is movably fitted with the upper end surface of the base frame, a bolt is installed on the upper end of the movable plate, and the connection between the bolt and the base frame is a threaded connection.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can protect operators and equipment during the process of drilling and sampling by installing a protective component, thereby preventing mud and water generated during the drilling process from splashing onto the equipment and operators.

[0016] 2. The present invention installs a knocking assembly. During the upward movement of the drill bit for sampling, the knocking ball in the knocking assembly will repeatedly hit the drill bit several times driven by multiple baffles, which is conducive to quickly separating the concrete sample core from the drill bit.

[0017] 3. The present invention installs a grid support plate and a driving assembly. When driven by the driving assembly, the grid support plate can automatically rotate to the upper side of the protective cover after the drill bit moves up and leaves the protective cover, which is beneficial for preventing the concrete sample core from falling back into the drill hole after the knocking assembly knocks the drill bit.

[0018] 4. The present invention installs a positioning assembly, and the assembly can move two pin plates simultaneously by moving any one push plate in the positioning assembly, thereby facilitating simultaneous adjustment of two rollers and facilitating single-person operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the present invention; Figure 2 FIG. 2 is a schematic diagram of the rear side structure of the frame of the present invention; Figure 3 FIG. 3 is a schematic diagram of the connection structure between the lifting seat and the knocking component of the present invention; Figure 4 FIG. 4 is a schematic diagram of the side sectional structure of the knocking component of the present invention; Figure 5 FIG. 5 is a schematic diagram of the connection state of the protection component, the grille support plate and the drive component of the present invention; Figure 6 FIG. 6 is a schematic diagram of the disassembled state of the protection component, the grille support plate and the drive component of the present invention; Figure 7 FIG. 7 is a schematic diagram of the transverse sectional structure of the drive component of the present invention; Figure 8 FIG. 8 is a schematic diagram of the disassembled structure of the positioning component and the roller of the present invention.

[0020] In the figures: 1, chassis; 2, frame; 3, threaded rod; 4, lifting seat; 5, drill bit; 6, universal wheel; 7, protective cover; 8, through hole; 9, water shield; 10, grille support plate; 11, internal gear ring; 12, limit ring; 13, support seat; 14, positioning wheel; 15, external gear ring; 16, sleeve; 17, pin rod; 18, gasket; 19, first spring; 20, hemispherical card slot; 21, limit rod; 22, guide rail; 23, sprocket; 24, chain; 25, diagonal support frame; 26, short connecting rod; 27, knocking ball; 28, stop rod; 29, arc spring; 30, positioning plate; 31, drive plate; 32, hinge seat; 33, baffle; 34, limit plate; 35, connecting shaft; 36, torsion spring; 37, bent connecting rod; 38, roller; 39, pin plate; 40, optical axis; 41, push plate; 42, movable plate; 43, bolt; 44, limit support block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1: Please refer to Figures 1-4, A sampling device for building engineering quality inspection shown in the figure, including a chassis 1. A frame 2 is fixedly installed at the upper end of the chassis 1. A threaded rod 3 is rotatably installed on the frame 2, and the lower end of the threaded rod 3 is rotatably connected to the chassis 1 through a bearing. A lifting seat 4 is threadedly sleeved on the outer side of the threaded rod 3, and the connection mode between the lifting seat 4 and the frame 2 is a sliding connection. A drill bit 5 is rotatably installed on the front side of the lifting seat 4. A universal wheel 6 is installed near the right end of the chassis 1, and the universal wheel 6 can be folded through a bracket. It also includes a protection component for preventing muddy water from splashing during the drilling process, and the protection component is installed on the lower side of the drill bit 5.

[0023] The protection component includes a protective cover 7 fixedly installed on the chassis 1. The protective cover 7 can enclose the muddy water generated during the drilling process, thus preventing the muddy water from splashing onto the equipment or the operator. The inner diameter of the upper port of the protective cover 7 is larger than the outer diameter of the drill bit 5. A plurality of through holes 8 are evenly distributed on the outer side of the protective cover 7. The through holes 8 are used to drain the muddy water inside the protective cover 7 to prevent the water level inside the protective cover 7 from being too high. A water baffle 9 is fixedly sleeved on the outer side of the protective cover 7, and the water baffle 9 covers the outside of a plurality of through holes 8. The water baffle 9 is used to prevent the muddy water from splashing out of the protective cover 7 through the through holes 8. Embodiment 2: Please refer to Figure 3 , Figure 4 , This embodiment further describes Embodiment 1. A knocking component is used to assist the concrete core sample to break away from the drill bit 5. The knocking component is installed on the outer side of the drill bit 5. The number of knocking components is two groups and they are symmetrically distributed. The knocking component includes guide rails 22 fixedly installed at the upper end of the chassis 1. Two symmetrically distributed sprockets 23 are rotatably installed inside the guide rails 22. A chain 24 is installed in cooperation with the outer side of the sprockets 23. Two symmetrically distributed inclined support frames 25 are fixedly installed on the outer side of the guide rails 22. A short connecting rod 26 is rotatably installed inside the two inclined support frames 25, and the short connecting rod 26 is close to the end of the inclined support frame 25 far from the guide rail 22.

[0024] One end of the short connecting rod 26 close to the drill bit 5 is fixedly connected to a knocking ball 27. One end of the short connecting rod 26 far from the knocking ball 27 is fixedly connected to a stop rod 28, and the included angle between the stop rod 28 and the short connecting rod 26 is an obtuse angle. An arc-shaped spring 29 is fixedly installed on the upper side of the stop rod 28. One end of the arc-shaped spring 29 far from the stop rod 28 is fixedly connected to a positioning plate 30, and the positioning plate 30 is fixedly connected to the inclined support frame 25. The arc-shaped spring 29 can drive the short connecting rod 26 and the knocking ball 27 to rotate through the positioning plate 30 and the stop rod 28.

[0025] A drive plate 31 is fixedly installed on the outer side of the chain 24, and the connection mode between the drive plate 31 and the lifting seat 4 is a fixed connection. A plurality of hinge seats 32 are fixedly installed on the outer side of the chain 24 at equal distances. A baffle 33 is rotatably installed inside the hinge seat 32 through a connecting shaft 35. During the up-and-down movement of the lifting seat 4, the chain 24 can be driven to rotate through the drive plate 31. The rotation of the chain 24 can drive a plurality of baffles 33 to move up and down reciprocally. The connection mode between the baffle 33 and the stop rod 28 is an active abutment. The lower side of the baffle 33 is actively abutted against a limit plate 34. The baffle 33 can drive the stop rod 28 and the knocking ball 27 to rotate under the blocking action of the limit plate 34. The limit plate 34 and the hinge seat 32 are of an integrally formed structure. The limit plate 34 is used to limit the rotation angle of the baffle 33. Two symmetrically distributed coil springs 36 are fixedly sleeved on the outer side of the connecting shaft 35, and the outer ends of the coil springs 36 are fixedly connected to the hinge seat 32. The coil springs 36 can drive the baffle 33 to rotate through the hinge seat 32 and the support bracket 25. Embodiment 3: Please refer to Figure 5 , Figure 6 , Figure 7 , this embodiment further describes Embodiment 2. The grid support plate 10 is used to prevent the concrete sample core from falling into the drill hole. The grid support plate 10 is installed on the upper side of the protection component; the driving component is used to drive the grid support plate 10 to rotate. The driving component is installed between the grid support plate 10 and the threaded rod 3. The driving component includes an internal gear ring 11 fixedly installed at the right end of the grid support plate 10. A limit ring 12 is fixedly sleeved on the outer side of the internal gear ring 11 near its lower end. A support seat 13 is movably sleeved on the outer side of the limit ring 12, and the internal gear ring 11 is rotatably connected to the support seat 13 through the limit ring 12. The support seat 13 can support the grid support plate 10 through the internal gear ring 11. The limit ring 12 can prevent the internal gear ring 11 from detaching from the support seat 13. A positioning wheel 14 is fixedly sleeved on the outer side of the support seat 13, and the positioning wheel 14 is located inside the internal gear ring 11.

[0026] An external gear ring 15 is movably sleeved on the outer side of the positioning wheel 14, and the connection mode between the external gear ring 15 and the internal gear ring 11 is a meshing connection. A plurality of connection components are installed between the positioning wheel 14 and the external gear ring 15 at equal circumferential distances. The connection components include a sleeve 16 fixedly embedded inside the positioning wheel 14, and a pin rod 17 is movably embedded at one end of the sleeve 16 close to the external gear ring 15.

[0027] One end of the pin rod 17 close to the external gear ring 15 is provided with a hemispherical portion. One end of the pin rod 17 located inside the sleeve 16 is fixedly connected with a gasket 18. The gasket 18 is used to prevent the pin rod 17 from detaching from the sleeve 16. One side of the gasket 18 away from the pin rod 17 is movably abutted against a first spring 19, and one end of the first spring 19 away from the gasket 18 is movably abutted against the sleeve 16. The first spring 19 can drive the pin rod 17 to move through the sleeve 16 and the gasket 18. A plurality of hemispherical card slots 20 equal in number to the number of connection components are formed on the inner wall of the external gear ring 15, and the hemispherical portion of the pin rod 17 is movably clamped with the external gear ring 15 through the hemispherical card slots 20. The threaded rod 3 can drive the internal gear ring 11 and the grille support plate 10 to rotate through the positioning wheel 14, the pin rod 17, the hemispherical card slots 20 and the external gear ring 15. Two symmetrically distributed limiting rods 21 are fixedly installed on the support base 13 corresponding to the outside of the grille support plate 10, and the connection mode between the grille support plate 10 and the limiting rods 21 is movable abutment. Embodiment 4: Please refer to Figure 2 , Figure 8 , this embodiment further illustrates Embodiment 1. Two symmetrically distributed bent connecting rods 37 are hingedly installed on the outside of the chassis 1. One end of the bent connecting rod 37 away from its hinge point is rotatably installed with a roller 38. One side of the bent connecting rod 37 away from the roller 38 is movably abutted against a limiting support block 44, and the limiting support block 44 is fixedly connected with the chassis 1. The limiting support block 44 is used to limit the rotation angle of the bent connecting rod 37. A positioning component is installed on the upper side of the bent connecting rod 37. The positioning component includes a pin plate 39 movably abutted against the bent connecting rod 37, and the pin plate 39 is slidably connected with the chassis 1 through a limiting straight groove.

[0028] The pin plate 39 abuts against the bent connecting rod 37 through the chassis 1, and can block the upward rotation of the bent connecting rod 37. One end of the pin plate 39 away from the bent connecting rod 37 is fixedly connected with an optical axis 40, and the connection mode between the optical axis 40 and the chassis 1 is plug-in connection. The two optical axes 40 are fixedly connected by a long connecting rod. One end of the optical axis 40 away from the pin plate 39 is fixedly connected with a push plate 41. Through the optical axis 40 and the push plate 41, it is convenient for personnel to move the two pin plates 39 simultaneously. An activity plate 42 is fixedly installed on the outside of the push plate 41, and the lower end surface of the activity plate 42 is movably attached to the upper end surface of the chassis 1. A bolt 43 is installed on the upper end of the activity plate 42, and the connection mode between the bolt 43 and the chassis 1 is threaded connection. The position of the push plate 41 and the pin plate 39 can be fixed through the bolt 43 and the activity plate 42.

[0029] Working principle: First, the personnel move the machine to the specified position through the universal wheel 6 and the roller 38, and then loosen the two bolts 43. Then, lift the end of the base frame 1 with the universal wheel 6 installed, fold the universal wheel 6, and then press one end of the base frame 1 to make the two rollers 38 suspended in the air. The personnel use one foot to push the push plate 41, so that the push plate 41 drives the two pin plates 39 to move away from the bending connecting rod 37 at the same time through the two optical axes 40. Then, the personnel put down the base frame 1. At this time, the bending connecting rod 37 is no longer blocked by the pin plate 39, so the roller 38 can rotate upward so that the base frame 1 contacts the ground, thereby enhancing the stability of the equipment during the coring process. After the coring is completed, the personnel suspend the roller 38 again, so that the roller 38 rotates and resets under the action of gravity. During the resetting process, the limit support block 44 limits the rotation angle of the bending link 37. Then the personnel pushes the plate 41 back with the foot hook to move the pin plate 39 to resist the bending link 37. Then the base frame 1 is supported by the roller 38 to adjust the universal wheel 6. Finally, the pin plate 39 is positioned by tightening the bolt 43.

[0030] During the process of the drill bit 5 sampling the concrete, the protective cover 7 blocks the mud and water splashing from the outside of the drill bit 5, which can effectively prevent the mud and water from splashing onto the equipment and operators. When the water level inside the protective cover 7 reaches a certain height, the mud and water inside it will flow out through multiple through holes 8, which can effectively prevent the water level inside the protective cover 7 from being too high, causing the mud and water to splash from the port of the protective cover 7.

[0031] After the drill bit 5 has finished sampling the concrete, the personnel rotates the threaded rod 3 to drive the lifting seat 4, that is, the drill bit 5 to move upward. During the upward movement, the lifting seat 4 drives the chain 24 to rotate on the outside of the two sprocket wheels 23 through the driving plate 31. The chain 24 will drive multiple baffles 33 to move upward during the rotation. When the baffle 33 moves to resist the baffle rod 28, under the obstruction of the limit plate 34, the baffle 33 will drive the knocking ball 27 to rotate through the roller 38 during the process of continuing to move upward, so that the knocking ball 27 rotates away from the drill bit 5. When the baffle 33 moves away from the baffle rod 28, the baffle rod 28 and the knocking ball 27 will rotate driven by the compression elastic force of the pin plate 39. At this time, the knocking ball 27 will hit the outer wall of the drill bit 5, knocking The ball 27 repeatedly hits the drill bit 5 several times under the drive of multiple baffles 33, which is conducive to quickly separating the concrete sample core from the drill bit 5 (when the concrete sample core remains in the borehole and does not move up with the drill bit 5, the personnel can remove the sampling equipment and use other tools to take the concrete sample core out of the borehole), making it convenient for personnel to take samples. In the process of the threaded rod 3 rotating to drive the lifting seat 4 and the drill bit 5 to move downward, the lower side of the baffle 33 will again resist the baffle rod 28, but since there is no blocking structure on the upper side of the baffle 33, the baffle 33 will rotate upward under the drive of the baffle rod 28 to avoid the baffle rod 28. When the baffle 33 moves down and separates from the baffle rod 28, the coil spring 36 will drive the baffle 33 to rotate through the connecting shaft 35.

[0032] During the process of the threaded rod 3 rotating to drive the lifting seat 4 to move downward, the threaded rod 3 will drive the internal gear ring 11 to rotate through a plurality of positioning wheels 14, pin rods 17 and external gear ring 15, so that the internal gear ring 11 drives the grille support plate 10 to rotate away from the protective cover 7. When the grille support plate 10 rotates and abuts against a limiting rod 21 located at the rear side, due to the block of the limiting rod 21, the grille support plate 10, the internal gear ring 11 and the external gear ring 15 cannot continue to rotate. At this time, during the continuous rotation of the threaded rod 3, a plurality of pin rods 17 will move out of the internal part of the hemispherical card slot 20, that is, the positioning wheel 14 idles inside the external gear ring 15. Similarly, when the threaded rod 3 rotates to drive the lifting seat 4 to move upward, a plurality of pin rods 17 will re-embed into the corresponding hemispherical card slots 20. At this time, the positioning wheel 14 can drive the external gear ring 15 to rotate in the reverse direction through a plurality of pin rods 17, and the grille support plate 10 will rotate towards the protective cover 7. When the drill bit 5 has not completely disengaged from the protective cover 7, the grille support plate 10 will abut against the outer wall of the drill bit 5, and the positioning wheel 14 idles inside the external gear ring 15. When the drill bit 5 moves upward and disengages from the grille support plate 10, the grille support plate 10 continues to rotate until it abuts against a limiting rod 21 located on the left side. At this time, the grille support plate 10 is located above the protective cover 7 and blocks the upper port of the protective cover 7. Then, when the drill bit 5 continues to move upward and the knocking component knocks on the outer wall of the drill bit 5, the positioning wheel 14 will idle inside the external gear ring 15 again. The concrete sample cores knocked off by the knocking component will fall on the upper end of the grille support plate 10, which can effectively prevent the knocked-off concrete sample cores from falling back into the drill hole.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for construction engineering quality inspection, comprising a base frame (1), a frame (2) being mounted on the upper end of the base frame (1), a threaded rod (3) being mounted on the frame (2), a lifting seat (4) being sleeved on the outer side of the threaded rod (3), a drill bit (5) being mounted on the front side of the lifting seat (4), a universal wheel (6) being mounted on the base frame (1), and the universal wheel (6) being foldable through a bracket, characterized in that: Also includes: A protective component, used to prevent splashing of mud and water during drilling, the protective component being installed on the lower side of the drill bit (5); A grid support plate (10) is used to prevent the concrete sample core from falling into the drill hole, and the grid support plate (10) is installed on the upper side of the protection component; A knocking assembly, used to assist the concrete sample core to separate from the drill bit (5), the knocking assembly being mounted on the outside of the drill bit (5), and the number of the knocking assembly being two groups; A driving assembly is used to drive the grille supporting plate (10) to rotate, and the driving assembly is installed between the grille supporting plate (10) and the threaded rod (3).

2. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: The protection assembly comprises a protection cover (7), a plurality of through holes (8) are provided on the outer side of the protection cover (7), and a water retaining cover (9) is sleeved on the outer side of the protection cover (7).

3. A sampling device for construction engineering quality inspection according to claim 2, characterized in that: The drive assembly comprises an inner gear ring (11), a limiting ring (12) is sleeved on the outer side of the inner gear ring (11), a support seat (13) is sleeved on the outer side of the limiting ring (12), and a positioning wheel (14) is sleeved on the outer side of the support seat (13).

4. A sampling device for construction engineering quality inspection according to claim 3, characterized in that: An outer toothed ring (15) is sleeved on the outer side of the positioning wheel (14), and a plurality of connection components are installed between the positioning wheel (14) and the outer toothed ring (15). The connection components include a sleeve (16), and a pin rod (17) is embedded at one end of the sleeve (16).

5. A sampling device for construction engineering quality inspection according to claim 4, characterized in that: A hemispherical portion is provided at one end of the pin rod (17), a gasket (18) is connected to one end of the pin rod (17), a first spring (19) is abutted against one side of the gasket (18), a plurality of hemispherical slots (20) are provided on the inner wall of the outer gear ring (15), and two limit rods (21) are installed on the support seat (13).

6. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: The striking assembly comprises a guide rail (22), two sprocket wheels (23) are installed inside the guide rail (22), a chain (24) is installed outside the sprocket wheels (23), two diagonal support frames (25) are installed outside the guide rail (22), and short connecting rods (26) are installed inside the two diagonal support frames (25).

7. A sampling device for construction engineering quality inspection according to claim 6, characterized in that: One end of the short connecting rod (26) is connected to a knocking ball (27), one end of the short connecting rod (26) is connected to a blocking rod (28), an arc spring (29) is installed on the upper side of the blocking rod (28), and one end of the arc spring (29) is connected to a positioning plate (30).

8. A sampling device for construction engineering quality inspection according to claim 7, characterized in that: A driving plate (31) is installed on the outer side of the chain (24), and a plurality of hinge seats (32) are also installed on the outer side of the chain (24). A baffle plate (33) is installed on the inner side of the hinge seat (32) via a connecting shaft (35). The baffle plate (33) is connected to the baffle rod (28) in a movable abutment manner. The lower side of the baffle plate (33) abuts against a limit plate (34), and two coil springs (36) are sleeved on the outer side of the connecting shaft (35).

9. A sampling device for construction engineering quality inspection according to claim 1, characterized in that: Two bent connecting rods (37) are installed on the outer side of the base frame (1), a roller (38) is installed on one end of the bent connecting rod (37), the lower side of one end of the bent connecting rod (37) abuts against a limited support block (44), and a positioning assembly is installed on the upper side of the bent connecting rod (37), the positioning assembly comprising a pin plate (39).

10. A sampling device for construction engineering quality inspection according to claim 9, characterized in that: One end of the pin plate (39) is connected to an optical axis (40), one end of the optical axis (40) is connected to a push plate (41), a movable plate (42) is installed on the outer side of the push plate (41), and a bolt (43) is installed on the upper end of the movable plate (42).

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