A concrete coring device for core drilling detection

Abstract

The present invention relates to the technical field of concrete detection, and in particular to a device for coring concrete using a core drilling method, comprising a base and a core drilling device, wherein a No. 1 sliding plate for controlling the lifting and lowering of the core drilling device is arranged on the top of the base, a rotating chamber and a contraction chamber for protecting the core drilling device are arranged on one side of the No. 1 sliding plate, a side display plate for unfolding to shield from rain is arranged between the rotating chamber and the contraction chamber, a blocking member for preventing stones from splashing is arranged at the bottom of the contraction chamber, a transmission assembly for slow stopping of the core drilling device is arranged in the core drilling device, and an extrusion disk and a tightening disk for emergency stopping are arranged in the core drilling device. The present invention uses the transmission assembly and the side display plate to block rainwater in rainy days through the rotation of the core drilling device, and uses the extrusion disk, the tightening disk and the blocking member to block splashing stones.

Description

Technical Field

[0001] The invention relates to the technical field of concrete detection, in particular to a concrete coring device for detecting concrete using a core drilling method. Background Art

[0002] Concrete coring is a commonly used engineering testing method, which is mainly used to drill core samples from concrete structures to determine the strength and other properties of concrete. This method is widely used in the testing of infrastructure such as roads, airports, ports, docks, dams, etc. to ensure the safety and durability of the structure.

[0003] Among them, in special weather conditions such as rainy days, the wet road surface will increase the difficulty of coring, because moisture may penetrate into the concrete, thus affecting the strength of the concrete. During the coring process, if the strength of the concrete is affected, it will become unstable, break or break during drilling, which will directly affect the representativeness of the coring sample and the accuracy of the analysis results; secondly, in the process of drilling deep into the concrete core, stone splashing may be encountered, especially when there are large stones or other hard objects inside the concrete or the concrete surface is uneven. When the drill bit contacts these hard objects, it may cause stone splashing, which may endanger the safety of the operator.

[0004] In view of this, we propose a concrete coring device using the core drilling method. Summary of the invention

[0005] The object of the present invention is to provide a device for coring concrete using a core drilling method to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides a device for coring concrete by a core drilling method, comprising a base and a core drilling device, wherein a first sliding plate for controlling the lifting and lowering of the core drilling device is arranged on the top of the base, a rotating chamber and a contraction chamber for protecting the core drilling device are arranged on one side of the first sliding plate, a side display panel for unfolding and shielding against rain is arranged between the rotating chamber and the contraction chamber, a blocking member for preventing stones from splashing is arranged at the bottom of the contraction chamber, a transmission assembly for slow stopping of the core drilling device is arranged in the core drilling device, and an extrusion disk and a tightening disk for emergency stopping are arranged in the core drilling device, wherein:

[0007] The core drilling device is rotated, the transmission assembly and the side display plate are used to block rainwater in rainy days, and the squeezing disk, the tightening disk and the blocking member are used to block flying stones.

[0008] As a preferred embodiment of the present invention, the top of the base is fixedly connected to one end of the No. 1 vertical pole, the other end of the No. 1 vertical pole is fixedly connected to a top plate, a No. 1 sliding plate is slidably connected between the No. 1 vertical poles on both sides, one side of the No. 1 sliding plate is fixedly connected to a fixing member, and the inner side of the fixing member is fixedly connected to a rotating chamber, wherein:

[0009] The base is fixedly connected to a handrail at the top of a side away from the rotating chamber, the center position of the top plate is rotatably connected to a threaded screw, and the threaded screw passes through the top plate, the No. 1 sliding plate is slidably connected to the outer wall of the threaded screw, one end of the threaded screw is rotatably connected to the top of the base, and the other end of the threaded screw is fixedly connected to a rotating wheel.

[0010] As a preferred embodiment of the present invention, the bottom of the rotating chamber is rotatably connected to a side display panel, the inner side of the outer wall of the side display panel is provided with an arched groove, a sliding ring is slidably connected in the arched groove, the outer side of the side display panel is provided with a rainproof cloth, a contraction chamber is provided below the side display panel, and a blocking member is provided on the lower outer wall of the contraction chamber, wherein:

[0011] A No. 2 sliding plate is fixedly connected to the bottom of the contraction chamber, and No. 2 vertical poles are arranged on both sides of the No. 2 sliding plate. The No. 2 vertical poles are fixedly connected to the top of the base, and the No. 2 sliding plate is slidably connected to the outer wall of the No. 2 vertical poles.

[0012] As a preferred embodiment of the present invention, the three-phase core drill comprises a three-phase motor, the three-phase motor is fixedly connected to the top of the rotating chamber, the output end of the three-phase motor is fixedly connected to one end of a rotating rod No. 1, the other end of the rotating rod No. 1 is provided with a tightening disk, the outer wall of the tightening disk is provided with a strip hole passing through the tightening disk, the strip hole is provided with a rounded surface at the bottom corner position of the tightening disk, and an extrusion disk is provided below the tightening disk.

[0013] As a preferred embodiment of the present invention, a strip groove is provided on the top of the extrusion disk, and the top angular position of the strip groove is also a rounded surface. A transmission assembly is arranged at the center of the extrusion disk, and the transmission assembly includes a transmission rod. The transmission rod passes through the extrusion disk, and the transmission rod is fixedly connected with a snap-fit ​​part at one end close to the No. 1 rotating rod, and the transmission rod is fixedly connected with a circular gear at one end away from the No. 1 rotating rod.

[0014] As a preferred embodiment of the present invention, a protruding column is fixedly connected to the lower end of the No. 1 rotating rod, and a buckle groove is provided at the bottom of the No. 1 rotating rod, and the buckle piece fits with the buckle groove.

[0015] As a preferred embodiment of the present invention, a fixed plate is arranged below the extrusion plate, the outer wall of the fixed plate is in contact with the upper inner wall of the contraction chamber, a rebound assembly is arranged at the bottom of the extrusion plate, the rebound assembly includes an insertion rod, the insertion rod passes through the extrusion plate and the fixed plate, and a spring is arranged on the outside of the insertion rod between the extrusion plate and the fixed plate.

[0016] As a preferred embodiment of the present invention, an unfolding component is provided on both sides of the extrusion disk, and the unfolding component includes a push plate, which is triangular in shape. The triangular middle ends of the push plates on both sides are rotatably connected to the two sides of the extrusion disk, and the triangular upper ends of the push plates are rotatably connected to the two sides of the tightening disk. The triangular lower end of the push plate is in contact with the top of the fixed disk, and the push plate is fixedly connected to one end of a connecting rod on the side away from the extrusion disk, and the other end of the connecting rod is in contact with the inner wall of the side expansion panel.

[0017] As a preferred embodiment of the present invention, a second rotating rod is slidably connected to the center position of the fixed plate, an inner side of the second rotating rod is provided with an internal gear groove, the internal gear groove is opened towards the direction of the circular gear, and the internal gear groove is meshingly connected with the circular gear.

[0018] As a preferred embodiment of the present invention, the outer wall of the lower end of the second rotating rod is fixedly connected with a push ring, and the outer wall of the push ring is fixedly connected to the inner wall of the blocking member through a plurality of support rods, and the plurality of support rods penetrate the outer wall of the lower end of the contraction chamber;

[0019] The bottom of the second rotating rod is fixedly connected with a drill bit.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the concrete coring device, the staff drives the core drilling device up and down by controlling the rotation of the rotating wheel and the threaded screw, so that the buckle at the bottom of the No. 1 rotating rod extends into the buckle groove for connection, and then driven by the three-phase motor, the No. 1 rotating rod and the transmission rod are driven to rotate together, and then the transmission rod is driven by the circular gear and the internal gear groove to rotate together with the drill bit to complete the drilling, so that the length of the coring can be judged by observing the height of the No. 2 sliding plate.

[0022] 2. In the concrete coring device, when the No. 2 sliding plate slides to the lowest end, the staff continues to rotate the rotating wheel to make the No. 1 rotating rod continue to move downward and push the extrusion plate. At this time, the spring contracts, the upper end of the push plate is tightened inward, and the lower end is expanded outward, driving the connecting rod to rotate outward to push the side expansion plates outward. Under the influence of the sliding ring, multiple side expansion plates will expand outward and the awning cloth will be expanded together, so as to provide rain protection in the drilling area during the drilling process.

[0023] 3. In the concrete coring device, when the transmission rod and the extrusion plate are squeezed and moved downward by the No. 1 rotating rod, the No. 2 rotating rod and the push ring will be driven to move downward together. At this time, the support rod uses the outer wall of the lower end of the contraction chamber as a fulcrum, and the blocking member pries upward and expands to block the splash of certain stones. On the contrary, the blocking member pries downward and contracts to prevent stones thrown out by the rotating drill bit from causing personal injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall three-dimensional schematic diagram of the concrete coring device of the present invention;

[0025] Figure 2 It is a three-dimensional schematic diagram of the lifting structure of the concrete coring device of the present invention;

[0026] Figure 3 A three-dimensional schematic diagram of the details of the lifting structure of the concrete coring device of the present invention;

[0027] Figure 4 A cross-sectional schematic diagram of a core drilling device of a concrete coring device of the present invention;

[0028] Figure 5 A schematic diagram of a cross-sectional three-dimensional detail of a core drilling device of a concrete coring device of the present invention;

[0029] Figure 6 It is an enlarged schematic diagram of part A of the concrete coring device of the present invention;

[0030] Figure 7 It is an enlarged schematic diagram of part B of the concrete coring device of the present invention;

[0031] Figure 8 It is a schematic diagram of the internal development of the core drilling device of the concrete coring device of the present invention;

[0032] Fig. 9 A three-dimensional schematic diagram of the details of the rotating rod and the transmission rod of the concrete coring device of the present invention;

[0033] The meaning of each number in the figure is:

[0034] 1. Base; 11. No. 1 vertical pole; 111. No. 1 sliding plate; 112. Top plate; 1121. Threaded screw; 1122. Rotating wheel; 113. Fixing piece; 12. No. 2 vertical pole; 121. No. 2 sliding plate; 13. Handrail; 2. Rotating chamber; 21. Side display panel; 211. Arched groove; 2111. Sliding ring; 212. Rain cover; 22. Blocking piece; 221. Support rod; 23. Contraction chamber;

[0035] 3. Drilling core device; 31. Three-phase motor; 32. Rotating rod No. 1; 321. Raised column; 322. Snap groove; 33. Tightening disk; 331. Strip hole; 332. Rounded surface; 34. Extrusion disk; 341. Strip groove; 342. Transmission assembly; 3421. Transmission rod; 3422. Circular gear; 3423. Snap piece; 343. Rebound assembly; 3431. Insertion rod; 3432. Spring; 344. Expanding assembly; 3441. Push plate; 3442. Connecting rod; 35. Fixed disk; 36. Rotating rod No. 2; 361. Internal gear groove; 362. Push ring; 37. Drill bit. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in 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.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. Embodiment 1

[0038] See also Figure 1-9 As shown, the present embodiment provides a device for coring concrete by the core drilling method, comprising a base 1 and a core drilling device 3, a sliding plate No. 111 for controlling the lifting and lowering of the core drilling device 3 is arranged on the top of the base 1, a rotating chamber 2 and a contraction chamber 23 for protecting the core drilling device 3 are arranged on one side of the sliding plate No. 111, a side display panel 21 for unfolding to shield from rain is arranged between the rotating chamber 2 and the contraction chamber 23, a blocking member 22 for preventing stones from splashing is arranged at the bottom of the contraction chamber 23, a transmission assembly 342 for slow stopping of the core drilling device 3 is arranged in the core drilling device 3, an extrusion disk 34 and a tightening disk 33 for emergency stopping are arranged in the core drilling device 3, wherein: through the rotation of the core drilling device 3, the transmission assembly 342 and the side display panel 21 are used to block rainwater in rainy days, and at the same time, the extrusion disk 34, the tightening disk 33 and the blocking member 22 are used to block splashing stones.

[0039] One end of a No. 1 vertical pole 11 is fixedly connected to both sides of the top of the base 1, and the other end of the No. 1 vertical pole 11 is fixedly connected to a top plate 112, and a No. 1 sliding plate 111 is slidably connected between the No. 1 vertical poles 11 on both sides, and a fixing piece 113 is fixedly connected to one side of the No. 1 sliding plate 111, and a rotating chamber 2 is fixedly connected to the inner side of the fixing piece 113, wherein: the base 1 is fixedly connected to a handrail 13 at the top on the side away from the rotating chamber 2, a threaded screw 1121 is rotatably connected to the center position of the top plate 112, and the threaded screw 1121 penetrates the top plate 112, the No. 1 sliding plate 111 is slidably connected to the outer wall of the threaded screw 1121, one end of the threaded screw 1121 is rotatably connected to the top of the base 1, and the other end of the threaded screw 1121 is fixedly connected to a rotating wheel 1122.

[0040] The bottom of the rotating chamber 2 is rotatably connected to a side display panel 21, an inner side of an outer wall of the side display panel 21 is provided with an arched groove 211, a sliding ring 2111 is slidably connected in the arched groove 211, a rain cover 212 is sleeved on the outer side of the side display panel 21, a contraction chamber 23 is provided below the side display panel 21, a blocking member 22 is provided on the lower outer wall of the contraction chamber 23, wherein: a No. 2 sliding plate 121 is fixedly connected to the bottom of the contraction chamber 23, a No. 2 vertical pole 12 is provided on both sides of the No. 2 sliding plate 121, the No. 2 vertical pole 12 is fixedly connected to the top of the base 1, and the No. 2 sliding plate 121 is slidably connected to the outer wall of the No. 2 vertical pole 12.

[0041] The core drilling device 3 includes a three-phase motor 31, which is fixedly connected to the top of the rotating chamber 2. The output end of the three-phase motor 31 is fixedly connected to one end of the No. 1 rotating rod 32. A tightening disk 33 is provided at the other end of the No. 1 rotating rod 32. The outer wall of the tightening disk 33 is provided with a strip hole 331 that penetrates the tightening disk 33. The strip hole 331 is provided with a rounded surface 332 at the bottom corner position of the tightening disk 33, and an extrusion disk 34 is provided below the tightening disk 33.

[0042] A strip groove 341 is provided at the top of the extrusion disk 34, and the top angular position of the strip groove 341 is also a rounded surface 332. A transmission assembly 342 is provided at the center of the extrusion disk 34, and the transmission assembly 342 includes a transmission rod 3421. The transmission rod 3421 passes through the extrusion disk 34, and the transmission rod 3421 is fixedly connected with a snap member 3423 at one end close to the No. 1 rotating rod 32, and the transmission rod 3421 is fixedly connected with a circular gear 3422 at one end away from the No. 1 rotating rod 32. The lower end of the No. 1 rotating rod 32 is fixedly connected with a raised column 321, and a snap groove 322 is provided at the bottom of the No. 1 rotating rod 32, and the snap member 3423 fits with the snap groove 322.

[0043] From this we can see that Figure 1-3As shown, when coring of the concrete pavement is required, the staff pushes the handrail 13 to push the coring device to the set position, and then rotates the rotating wheel 1122 to drive the threaded screw 1121 to rotate, and at the same time, the threaded screw 1121 drives the No. 1 sliding plate 111 to slide downward on the No. 1 vertical pole 11, and at the same time, the No. 1 sliding plate 111 drives the fixing part 113, the rotating chamber 2 and the contraction chamber 23 to move downward together, and at the same time, the No. 2 sliding plate 121 will drive the contraction chamber 23 to move up and down on the No. 2 vertical pole 12 and stop on the base 1, and at this time, the drill bit 37 moves down to the designated coring position together to start coring of the concrete pavement;

[0044] like Figure 4-5 As shown, when the staff rotates the rotating wheel 1122 to make the No. 1 sliding plate 111 drive the No. 1 rotating rod 32 in the rotating chamber 2 to continue to move downward, the rotating chamber 2 will slightly squeeze the contraction chamber 23 downward, and the contraction chamber 23 will continue to be pushed by the support of the spring 3432. After the contraction chamber 23 is pushed, the contraction chamber 23 and the No. 2 sliding plate 121 will move up and down on the No. 2 vertical pole 12 until they move down to the top of the base 1 and stop. At the same time, the buckle 3423 at the bottom of the No. 1 rotating rod 32 extends into the buckle groove 322 for connection, and then driven by the three-phase motor 31, the No. 1 rotating rod 32 and the transmission rod 3421 are driven to rotate together, and then the transmission rod 3421 is driven by the circular gear 3422 and the internal gear groove 361 to rotate together with the drill bit 37, and the drilling is completed. This makes it possible to clearly know the length of the core by observing the distance that the No. 2 sliding plate 121 moves up and down on the No. 2 vertical pole 12 during the drilling process;

[0045] It should be noted that after the snap groove 322 and the snap member 3423 are matched, the bottom of the No. 1 rotating rod 32 is in contact with the top of the extrusion plate 34. Because the rotation speed of the three-phase motor 31 changes from slow to fast, during the slow rotation of the No. 1 rotating rod 32, the snap member 3423 at the bottom of the No. 1 rotating rod 32 will pass through the snap groove 322 and be blocked by the blocking surface in the snap groove 322, thereby driving the transmission rod 3421 to rotate together. Embodiment 2

[0046] Different from the first embodiment, in order to prevent rainwater from affecting the concrete cores taken out during coring on rainy days, Figure 5-7 As shown, a fixed plate 35 is arranged below the extrusion plate 34, and the outer wall of the fixed plate 35 is in contact with the inner wall of the upper end of the contraction chamber 23. A rebound assembly 343 is arranged at the bottom of the extrusion plate 34. The rebound assembly 343 includes a penetration rod 3431. The penetration rod 3431 passes through the extrusion plate 34 and the fixed plate 35. A spring 3432 is arranged on the outside of the penetration rod 3431 between the extrusion plate 34 and the fixed plate 35.

[0047] An unfolding assembly 344 is provided on both sides of the extrusion disk 34, and the unfolding assembly 344 includes a push plate 3441. The push plate 3441 is triangular in shape, and the triangular middle ends of the push plates 3441 on both sides are rotatably connected to the two sides of the extrusion disk 34, and the triangular upper ends of the push plates 3441 are rotatably connected to the two sides of the tightening disk 33. The triangular lower ends of the push plates 3441 are in contact with the top of the fixed disk 35. The push plate 3441 is fixedly connected to one end of a connecting rod 3442 on the side away from the extrusion disk 34, and the other end of the connecting rod 3442 is in contact with the inner wall of the side expansion panel 21.

[0048] A No. 2 rotating rod 36 is slidably connected to the center position of the fixed disk 35, and an inner gear groove 361 is opened on the inner side of the No. 2 rotating rod 36, and the inner gear groove 361 is opened in the direction of the circular gear 3422, and the inner gear groove 361 is meshingly connected with the circular gear 3422. A push ring 362 is fixedly connected to the outer wall of the lower end of the No. 2 rotating rod 36, and the outer wall of the push ring 362 is fixedly connected to the inner wall of the blocking member 22 through a plurality of support rods 221. The plurality of support rods 221 penetrate the outer wall of the lower end of the contraction chamber 23, and a drill bit 37 is fixedly connected to the bottom of the No. 2 rotating rod 36.

[0049] From this we can see that Figure 5 As shown, in the process of the staff rotating the rotating wheel 1122 on a rainy day, when the No. 2 sliding plate 121 slides to the lowest end of the No. 2 vertical rod 12, the staff continues to rotate the rotating wheel 1122 to make the No. 1 rotating rod 32 at the top of the extrusion plate 34 continue to move downward and push the extrusion plate 34. After the extrusion plate 34 is pushed, the spring 3432 contracts, as shown in FIG. Figure 7 As shown, the push plates 3441 on both sides of the extrusion plate 34 are blocked by the fixed plate 35 at one corner of the lower end, and the push plates 3441 on both sides will expand outwards. At this time, the tightening plate 33 will also be affected by the upper end of the push plates 3441 and shrink inwards, and at the same time drive the connecting rod 3442 to push the side display plates 21 outwards. When multiple side display plates 21 are expanded outwards, the sliding ring 2111 will slide from the bottom of the arched groove 211 to the top, driving all the side display plates 21 to expand together. At the same time, the rain cover 212 is expanded at a certain angle by the expansion of the side display plates 21, which has the function of protecting the drilling area from rain during the drilling process.

[0050] like Figure 6As shown, during the coring process, the squeezed extrusion plate 34 and the transmission rod 3421 move downward, which will drive the second rotating rod 36 and the push ring 362 to move downward together. When the push ring 362 moves downward, the support rod 221 will use the outer wall of the lower end of the contraction chamber 23 as a fulcrum to pry the blocking member 22 upward and expand it. This allows the drill bit 37 to penetrate deeper into the coring process to block a certain amount of splashing stones. Conversely, when the concrete core needs to be removed, the squeeze plate 34 and the transmission rod 3421 move upward, driving the support rod 221 to use the outer wall of the lower end of the contraction chamber 23 as a fulcrum to pry the blocking member 22 downward and contract it, so as to prevent stones thrown out by the rotating drill bit 37 from causing personal injury.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for coring concrete by a core drilling method, comprising a base (1) and a core drilling device (3), characterized in that: A first sliding plate (111) for controlling the lifting of the core drilling device (3) is arranged on the top of the base (1); a rotating chamber (2) and a contraction chamber (23) for protecting the core drilling device (3) are arranged on one side of the first sliding plate (111); a side display plate (21) for unfolding to shield against rain is arranged between the rotating chamber (2) and the contraction chamber (23); a blocking member (22) for preventing stones from splashing is arranged at the bottom of the contraction chamber (23); a transmission assembly (342) for slow stopping of the core drilling device (3) is arranged in the core drilling device (3); and a squeezing plate (34) and a tightening plate (33) for emergency stopping are arranged in the core drilling device (3), wherein: By rotating the core drilling device (3), the transmission assembly (342) and the side display plate (21) are used to block rainwater in rainy days, and at the same time, the squeezing plate (34), the tightening plate (33) and the blocking member (22) are used to block flying stones; The core drilling device (3) includes a three-phase motor (31), the three-phase motor (31) is fixedly connected to the top of the rotating chamber (2), the output end of the three-phase motor (31) is fixedly connected to one end of a first rotating rod (32), the other end of the first rotating rod (32) is provided with a tightening disk (33), the outer wall of the tightening disk (33) is provided with a strip hole (331) penetrating the tightening disk (33), the strip hole (331) is provided with a rounded surface (332) at the bottom corner position of the tightening disk (33), and a squeezing disk (34) is provided below the tightening disk (33); A fixed disk (35) is disposed below the extrusion disk (34), the outer wall of the fixed disk (35) being in contact with the inner wall of the upper end of the contraction chamber (23), a rebound assembly (343) being disposed at the bottom of the extrusion disk (34), the rebound assembly (343) comprising a penetration rod (3431), the penetration rod (3431) penetrating the extrusion disk (34) and the fixed disk (35), the penetration rod (3431) being provided with a spring (3432) at the outer side of the position between the extrusion disk (34) and the fixed disk (35); An unfolding assembly (344) is provided on both sides of the extrusion disk (34), and the unfolding assembly (344) includes a push plate (3441). The push plate (3441) is triangular in shape, and the triangular middle ends of the push plates (3441) on both sides are rotatably connected to the two sides of the extrusion disk (34), and the triangular upper ends of the push plates (3441) are rotatably connected to the two sides of the tightening disk (33). The triangular lower ends of the push plates (3441) are in contact with the top of the fixed disk (35), and one end of a connecting rod (3442) is fixedly connected to the side of the push plate (3441) away from the extrusion disk (34), and the other end of the connecting rod (3442) is in contact with the inner wall of the side unfolding plate (21).

2. A concrete coring device for coring according to claim 1, characterized in that: The top of the base (1) is fixedly connected to one end of a No. 1 vertical pole (11), the other end of the No. 1 vertical pole (11) is fixedly connected to a top plate (112), a No. 1 sliding plate (111) is slidably connected between the No. 1 vertical poles (11) on both sides, a fixing member (113) is fixedly connected to one side of the No. 1 sliding plate (111), and a rotating chamber (2) is fixedly connected to the inner side of the fixing member (113), wherein: The base (1) is fixedly connected to a handrail (13) at the top of a side away from the rotation chamber (2); a threaded screw (1121) is rotatably connected to the center of the top plate (112), and the threaded screw (1121) passes through the top plate (112); the first sliding plate (111) is slidably connected to the outer wall of the threaded screw (1121); one end of the threaded screw (1121) is rotatably connected to the top of the base (1); and the other end of the threaded screw (1121) is fixedly connected to a rotating wheel (1122).

3. A concrete coring device for coring according to claim 2, characterized in that: The bottom of the rotating chamber (2) is rotatably connected to a side display plate (21), an arched groove (211) is provided on the inner side of the outer wall of the side display plate (21), a sliding ring (2111) is slidably connected in the arched groove (211), a rain cover (212) is sleeved on the outer side of the side display plate (21), a contraction chamber (23) is provided below the side display plate (21), and a blocking member (22) is provided on the lower outer wall of the contraction chamber (23), wherein: A second sliding plate (121) is fixedly connected to the bottom of the contraction chamber (23), and second vertical poles (12) are arranged on both sides of the second sliding plate (121). The second vertical pole (12) is fixedly connected to the top of the base (1), and the second sliding plate (121) is slidably connected to the outer wall of the second vertical pole (12).

4. The device for coring concrete by core drilling method according to claim 1, characterized in that: The top of the extrusion plate (34) is provided with a strip groove (341), and the top angular position of the strip groove (341) is also a rounded surface (332). A transmission assembly (342) is provided at the center of the extrusion plate (34), and the transmission assembly (342) includes a transmission rod (3421). The transmission rod (3421) passes through the extrusion plate (34), and the transmission rod (3421) is fixedly connected to a buckle (3423) at one end close to the first rotating rod (32), and the transmission rod (3421) is fixedly connected to a circular gear (3422) at one end away from the first rotating rod (32).

5. A concrete coring device for coring according to claim 4, characterized in that: A protruding column (321) is fixedly connected to the lower end of the No. 1 rotating rod (32), a buckle groove (322) is provided at the bottom of the No. 1 rotating rod (32), and the buckle piece (3423) fits in the buckle groove (322).

6. The device for coring concrete by core drilling method according to claim 1, characterized in that: A second rotating rod (36) is slidably connected to the center of the fixed plate (35), and an inner gear groove (361) is provided on the inner side of the second rotating rod (36). The inner gear groove (361) is opened in a direction toward the circular gear (3422), and the inner gear groove (361) is meshedly connected with the circular gear (3422).

7. A concrete coring device for coring according to claim 6, characterized in that: A push ring (362) is fixedly connected to the outer wall of the lower end of the second rotating rod (36), and the outer wall of the push ring (362) is fixedly connected to the inner wall of the blocking member (22) through a plurality of support rods (221), and the plurality of support rods (221) penetrate the outer wall of the lower end of the contraction chamber (23); A drill bit (37) is fixedly connected to the bottom of the second rotating rod (36).

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