Concrete core sample cutting machine

Abstract

The invention discloses a concrete core sample cutting machine and relates to the technical field of cutting devices.The concrete core sample cutting machine comprises a bottom plate, a circular groove is formed in the top of the bottom plate and penetrates through the bottom, a rotating frame is rotationally connected to the bottom of the bottom plate, a saw blade is rotationally connected to the portion, close to one end, of the top of the rotating frame, and two fourth belt wheels are rotationally connected into the rotating frame; a second belt is arranged between the two fourth belt wheels in a sleeving mode, a direct current motor is fixedly connected to the bottom of the rotating frame, and a reciprocating cutting structure is arranged on the top of the bottom plate. Through alternate meshing of the first gear, the residual gear and the residual tooth groove, the saw blade is driven to achieve automatic reciprocating cutting, the cutting efficiency is remarkably improved, the idle stroke time is shortened, meanwhile, a gear transmission system ensures that the action is coherent and stable, abrasion caused by one-way stress of the saw blade is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of cutting devices, in particular to a concrete core sample cutting machine. Background Art

[0002] Concrete core samples are cylindrical samples directly drilled from hardened concrete structures or components by the core drilling method. In order to meet the requirements of subsequent testing and analysis, it is necessary to cut the cylindrical core samples drilled from the concrete structure into cylindrical slice specimens with uniform size and regular shape;

[0003] The Chinese patent with the publication number of "CN118528423A" discloses a double-blade concrete core sample cutting machine, including a base, a clamping assembly, two cutters and two sets of position adjustment assemblies, the two cutters are arranged in a one-to-one correspondence with the two sets of position adjustment assemblies, the clamping assembly is installed on the base, used to clamp the concrete core sample, the two sets of position adjustment assemblies are arranged on both sides of the clamping assembly for sliding in opposite directions, and are used to drive the cutters to cut the concrete core sample; the clamping assembly includes an insert sleeve, a chuck structure and a support frame, the support frame is connected to the base, the insert sleeve is rotatably connected to the support frame, and one end is connected to the chuck structure; the position adjustment assembly includes a driving member and a mounting seat slidably connected to the base, the driving member is connected to the mounting seat, and is used to drive the mounting seat to slide, the cutter is installed on the mounting seat, and is connected to the driving member;

[0004] Although the above patent can prevent the core sample from breaking before it is completely cut and prevent the possibility of missing corners in the cross section of the concrete core sample after cutting, the chuck structure relies on the rigid clamping of the insert sleeve and lacks adaptive adjustment capabilities. When facing irregular or eccentric core samples, it is easy to cause local stress concentration, resulting in low-strength concrete edge crushing or clamping failure. Summary of the invention

[0005] The main purpose of the present invention is to provide a concrete core sample cutting machine, which can effectively solve the technical problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A concrete core sample cutting machine comprises a bottom plate, a circular groove is formed through the top of the bottom plate, a rotating frame is rotatably connected to the bottom of the bottom plate, a saw blade is rotatably connected to the top of the rotating frame at one end, two pulleys four are rotatably connected to the inside of the rotating frame, a belt two is sleeved between the two pulleys four, a DC motor is fixedly connected to the bottom of the rotating frame, and a reciprocating cutting structure is arranged on the top of the bottom plate;

[0008] The reciprocating cutting structure includes a rotating cover, which is rotatably connected to the top of the base plate on one side, and the top of the base plate and located inside the rotating cover are rotatably connected with gear 2, a residual gear is fixedly connected at the inner center position of the rotating cover, and a residual tooth groove is opened on the inner wall of the rotating cover, a fixed plate is fixedly connected to the top of the base plate on one side, and a motor is fixedly connected to the top of the fixed plate.

[0009] As a further solution of the present invention, the bottom of the gear 2 passes through the bottom of the base plate and is fixedly connected to the top of the rotating frame at the other end, the gear 2 is meshed with the residual gear, and the gear 2 is adaptively matched with the residual tooth groove.

[0010] As a further solution of the present invention, the output shaft of the DC motor passes through the interior of the rotating frame and is fixedly connected to the pulley four at the rear, and the output shaft of the motor is fixed to the bottom of the fixing plate and is fixedly connected to the rotating cover.

[0011] As a further solution of the present invention, a clamping stepping structure is provided on the top of the base plate, and the clamping stepping structure includes two supporting rings and two rotating rings, the two supporting rings are sequentially arranged on the top of the base plate from top to bottom, the rotating ring is rotatably connected to the top of the supporting ring, three connecting blocks are equidistantly fixedly connected to the outer surface of the supporting ring near the top, three columns are equidistantly fixedly connected to the top of the base plate, and screw rods are rotatably connected to the inside of the three columns, wherein the bottoms of two screw rods are connected to two pulleys 1, and the bottom of the other screw rod is also connected to a pulley 1, the top of the base plate is rotatably connected to two pulleys 2, a belt 1 is sleeved between two adjacent pulleys 1 and pulley 2, the top of the base plate is rotatably connected to pulley 3, and a belt 1 is also sleeved between pulley 1 and pulley 3 near the bottom of one side;

[0012] The inside of the two supporting rings is provided with three through grooves, the inside of the three through grooves are rotatably connected with a rotating rod, one end of the rotating rod is rotatably connected with a pressure wheel, the tops of the three rotating rods pass through the tops of the supporting rings and are fixedly connected with gear 1, the inside of the rotating ring is provided with a full tooth groove on the outer side, the outer surface of the rotating ring is fixedly connected with a fixing block, the outer surface of the supporting ring is fixedly connected with a slide rail on the top, the top of the fixing block passes through the bottom threaded connection with a threaded rod, and the bottom of the threaded rod passes through the slide rail and is fixedly connected with a splint.

[0013] As a further solution of the present invention, the gear one is meshed with the full tooth groove, and the gear one does not contact the inner side of the rotating ring, and the connecting block is connected with a screw thread.

[0014] As a further solution of the present invention, the top of the base plate is fixedly connected to a support plate on the other side, and the top of the support plate is fixedly connected to a servo motor. The output shaft of the servo motor passes through the bottom of the support plate and is fixedly connected to the pulley three. The support ring near the bottom is connected to the circular groove, and the support ring near the bottom is fixedly connected to the base plate.

[0015] As a further solution of the present invention, a discharge plate is provided at the bottom of the base plate and at the bottom position of the circular groove, the rear of the discharge plate is fixedly connected to support block 1, the front of the discharge plate is fixedly connected to support block 2, the top of support block 1 is rotatably connected to a screw rod, the top thread of the screw rod passes through the top of the base plate, the top of support block 2 is rotatably connected to a benchmark rod, the top of the benchmark rod slides through the top of the base plate, and the outer surface of the benchmark rod is provided with a scale.

[0016] As a further solution of the present invention, the rear portion of the discharge plate is horizontal, the front portion of the discharge plate is inclined and bent, and the height of the bottom of the rotating frame is longer than the distance between the rear portion of the discharge plate and the bottom plate.

[0017] As a further solution of the present invention, a toggle structure is provided on the outer surface of the rotating frame, and the toggle structure includes a fixed rod and a toggle rod, the fixed rod is fixedly connected to the side of the rotating frame, the toggle rod is rotatably connected to one end of the fixed rod, the top of the toggle rod passes through the top of the fixed rod and is fixedly connected to a ratchet, the top of the fixed rod is rotatably connected to a pawl, the bottom of the fixed rod is fixedly connected to a fixed box, and a coil spring is provided inside the fixed box.

[0018] As a further solution of the present invention, the ratchet is adaptively matched with the pawl, the bottom of the pawl passes through the interior of the fixed box and is fixedly connected to one end of the disc spring, the other end of the disc spring is fixedly connected to the inner wall of the fixed box, and the lever is located between the discharge plate and the bottom plate.

[0019] The beneficial effects of the present invention are as follows:

[0020] Through the alternating meshing of gear 1, the residual gear and the residual tooth groove, the saw blade is driven to achieve automatic reciprocating cutting, which significantly improves the cutting efficiency and reduces the idle time. At the same time, the gear transmission system ensures the continuous and stable action, reduces the wear of the saw blade caused by unidirectional force, and prolongs its service life.

[0021] By changing the rotation degree of the three rotating rods, the distance between the three pressing wheels can be changed, so that concrete core samples of different diameters can be fixed. At the same time, the three rotating rods rotate synchronously to ensure uniform circumferential pressure on the core sample, avoiding single-point stress concentration that may cause surface cracking or internal structure damage of the core sample. It is especially suitable for brittle concrete samples, evenly applying force to fix the core sample and avoiding cutting deviation.

[0022] The stepping structure is driven by a servo motor to drive the lead screw, accurately controlling the core sample descent distance to ensure consistent cutting thickness. It is especially suitable for scenes that require multi-segment cutting to improve processing accuracy.

[0023] The height of the discharge plate is adjusted by a screw rod. Combined with a scaled rod, the cutting length can be quickly set, the parameters can be visualized, the measurement error can be reduced, and the consistency of batch processing can be improved.

[0024] The toggle mechanism utilizes the one-way locking characteristics of the ratchet and pawl to force the cut core sample to be peeled off when the turret is reset, and slide it out along the inclined discharge plate to avoid chip accumulation that interferes with subsequent cutting. It is especially suitable for high-intensity continuous operations and reduces the frequency of shutdowns for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a concrete core sample cutting machine of the present invention;

[0026] Figure 2 A bottom perspective view of a rotating frame of a concrete core cutting machine according to the present invention;

[0027] Figure 3 This is a bottom perspective view of a rotating frame of a concrete core cutting machine according to the present invention after being disassembled;

[0028] Figure 4 A diagram showing the reciprocating cutting structure of a concrete core cutting machine according to the present invention after the fixed plate is disassembled;

[0029] Figure 5 A bottom perspective view of a rotating cover of a concrete core cutting machine according to the present invention;

[0030] Figure 6 This is a dissecting diagram of the clamping stepping structure of a concrete core cutting machine of the present invention;

[0031] Figure 7 A concrete core cutting machine according to the present invention Figure 6 A magnified view of part A;

[0032] Figure 8 This is a dissecting diagram of a swivel of a concrete core cutting machine of the present invention;

[0033] Fig. 9 A bottom perspective view of a swivel of a concrete core cutting machine according to the present invention;

[0034] Fig.10 A bottom structure diagram of a bottom plate of a concrete core cutting machine according to the present invention;

[0035] Fig.11 A diagram showing a fixing rod and a lever of a concrete core cutting machine according to the present invention;

[0036] Fig.12 This is a dissection diagram of a fixing box of a concrete core cutting machine according to the present invention.

[0037] In the figure: 1, bottom plate; 2, benchmark; 3, clamping stepping structure; 4, support ring; 5, rotating ring; 6, connecting block; 7, column; 8, screw rod; 9, pulley 1; 10, pulley 2; 11, pulley 3; 12, support plate; 13, servo motor; 14, fixed block; 15, threaded rod; 16, clamping plate; 17, slide rail; 18, through groove; 19, rotating rod; 20, pressure wheel; 21, gear 1; 22, full tooth groove; 23, rotating frame; 24 , saw blade; 25, DC motor; 26, pulley four; 27, rotating cover; 28, fixed plate; 29, motor; 30, residual tooth groove; 31, residual gear; 32, gear two; 33, discharge plate; 34, support block one; 35, support block two; 36, screw; 37, toggle structure; 38, fixed rod; 39, toggle rod; 40, ratchet; 41, pawl; 42, fixed box; 43, coil spring; 44, circular groove; 45, reciprocating cutting structure. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] like Figure 1 - Fig.12 As shown, a concrete core sample cutting machine comprises a bottom plate 1, a circular groove 44 is formed through the top of the bottom plate 1, a rotating frame 23 is rotatably connected to the bottom of the bottom plate 1, a saw blade 24 is rotatably connected to the top of the rotating frame 23 at one end, two pulleys 26 are rotatably connected to the inside of the rotating frame 23, a belt 2 is sleeved between the two pulleys 26, a DC motor 25 is fixedly connected to the bottom of the rotating frame 23, and a reciprocating cutting structure 45 is arranged on the top of the bottom plate 1;

[0040] The reciprocating cutting structure 45 includes a rotating cover 27, which is rotatably connected to the top of the base plate 1 on one side. A gear 2 32 is rotatably connected to the top of the base plate 1 and located inside the rotating cover 27. A residual gear 31 is fixedly connected to the inner center position of the rotating cover 27. A residual tooth groove 30 is provided on the inner wall of the rotating cover 27. A fixed plate 28 is fixedly connected to the top of the base plate 1 on one side, and a motor 29 is fixedly connected to the top of the fixed plate 28.

[0041] Place the concrete core sample inside the circular groove 44, start the DC motor 25, drive the pulley 4 26 at the rear to rotate, and then drive the pulley 4 26 at the front to rotate synchronously through the belt 2, and then drive the saw blade 24 to rotate. At this time, start the motor 29 again to drive the rotating cover 27 to rotate clockwise. While the rotating cover 27 rotates clockwise, it drives the residual tooth groove 30 and the residual gear 31 to rotate synchronously clockwise, so that the gear 2 32 and the residual gear 31 are no longer meshed. At this time, the gear 2 32 starts to mesh with the residual tooth groove 30, and then the residual tooth groove 30 is rotated clockwise. The rotation of the needle drives gear 2 32 to rotate synchronously clockwise, and then drives the rotating frame 23 to rotate clockwise, thereby driving the saw blade 24 to rotate together with the rotating frame 23, so that the concrete core sample passes through the bottom part of the circular groove 44 for cutting, and the rotating cover 27 continues to rotate, and gear 2 32 no longer meshes with the residual tooth groove 30, and gear 2 32 begins to mesh with the residual gear 31, thereby delaying the clockwise rotation of the residual gear 31 and driving gear 2 32 to rotate counterclockwise, thereby driving the rotating frame 23 and the saw blade 24 to rotate counterclockwise, so that the saw blade 24 and the rotating frame 23 are reset.

[0042] In this embodiment, the bottom of the second gear 32 passes through the bottom of the base plate 1 and is fixedly connected to the top of the rotating frame 23 by the other end. The second gear 32 is meshed with the residual gear 31, and the second gear 32 is adaptively matched with the residual tooth groove 30.

[0043] In this embodiment, the output shaft of the DC motor 25 passes through the interior of the rotating frame 23 and is fixedly connected to the pulley 26 at the rear, and the output shaft of the motor 29 is fixed to the bottom of the fixing plate 28 and is fixedly connected to the rotating cover 27.

[0044] In this embodiment, a clamping stepping structure 3 is provided at the top of the base plate 1, and the clamping stepping structure 3 includes two supporting rings 4 and two rotating rings 5. The two supporting rings 4 are sequentially arranged on the top of the base plate 1 from top to bottom, and the rotating ring 5 is rotatably connected to the top of the supporting ring 4. Three connecting blocks 6 are equidistantly fixedly connected to the outer surface of the supporting ring 4 near the top, and three upright posts 7 are equidistantly fixedly connected to the top of the base plate 1. The interiors of the three upright posts 7 are rotatably connected to screw rods 8, wherein the bottoms of two screw rods 8 are connected to two pulleys 1 9, and the bottom of the other screw rod 8 is also connected to a pulley 1 9. The top of the base plate 1 is rotatably connected to two pulleys 2 10, and a belt 1 is sleeved between two adjacent pulleys 1 9 and pulley 2 10. The top of the base plate 1 is rotatably connected to a pulley 3 11, and a belt 1 is also sleeved between the pulley 1 9 and the pulley 3 11 near the bottom of one side.

[0045] Three through grooves 18 are provided inside the two support rings 4, and the three through grooves 18 are rotatably connected to the inside of a rotating rod 19, one end of the rotating rod 19 is rotatably connected to a pressure wheel 20, the tops of the three rotating rods 19 pass through the tops of the support rings 4 and are fixedly connected to a gear 21, a full tooth groove 22 is provided inside the rotating ring 5 on the outer side, the outer surface of the rotating ring 5 is fixedly connected to a fixed block 14, the outer surface of the support ring 4 is fixedly connected to a slide rail 17 on the top, the top of the fixed block 14 passes through the bottom to be threadedly connected to a threaded rod 15, and the bottom of the threaded rod 15 passes through the slide rail 17 and is fixedly connected to a clamping plate 16.

[0046] When the concrete core sample is placed at the position of the circular groove 44, the concrete core sample is also located inside the two support rings 4. At this time, the two swivel rings 5 ​​are rotated, and the swivel ring 5 rotates, driving the full tooth groove 22 to rotate, and then driving the three gears 21 to rotate synchronously, and then driving the rotating rod 19 to rotate synchronously, so that the rotating rod 19 leaves the inside of the through groove 18 and enters the inside of the support ring 4. The swivel ring 5 is continued to be rotated, driving the three rotating rods 19 to continue to rotate synchronously. During the rotation of the swivel ring 5, the fixed block 14 and the threaded rod 15 are driven to slide along the slide rail 17. When the three pressure wheels 20 are pressed against the outer surface of the concrete core sample, the threaded rod 15 is rotated to drive the clamping plate 16 to move up. When the clamping plate 16 is pressed against the bottom of the slide rail 17, the swivel ring 5 is fixed, so that the three rotating rods 19 are fixed. Therefore, the concrete core sample is fixed by the three rotating rods 19 and the three pressure wheels 20.

[0047] The support ring 4 at the top fixes the concrete core sample, and the support ring 4 at the bottom limits the concrete core sample. Therefore, the extrusion pressure of the three rotating rods 19 at the top on the concrete core sample is greater than the extrusion pressure of the three rotating rods 19 at the bottom on the concrete core sample.

[0048] After the concrete core sample is fixed, the servo motor 13 is started to drive the pulley three 11 to rotate, and through all the belts one and the pulley two 10, all the pulleys one 9 are driven to rotate synchronously, thereby driving the three screw rods 8 to rotate synchronously, driving the two connecting blocks 6 to descend, thereby driving the support ring 4 near the top to descend, and then driving the concrete core sample to descend, so that the concrete core sample passes through the bottom of the circular groove 44 and is then cut by the saw blade 24.

[0049] In this embodiment, the gear 1 21 is meshed with the full tooth groove 22 , and the gear 1 21 does not contact the inner side of the rotating ring 5 , and the connecting block 6 is threadedly connected with the screw rod 8 .

[0050] In this embodiment, a support plate 12 is fixedly connected to the top of the base plate 1 on the other side, a servo motor 13 is fixedly connected to the top of the support plate 12, an output shaft of the servo motor 13 passes through the bottom of the support plate 12 and is fixedly connected to the pulley three 11, the support ring 4 near the bottom is connected to the circular groove 44, and the support ring 4 near the bottom is fixedly connected to the base plate 1.

[0051] In this embodiment, a discharge plate 33 is provided at the bottom of the base plate 1 and at the bottom position of the circular groove 44, the rear of the discharge plate 33 is fixedly connected to a support block 1 34, the front of the discharge plate 33 is fixedly connected to a support block 2 35, the top of the support block 1 34 is rotatably connected to a screw rod 36, the top thread of the screw rod 36 passes through the top of the base plate 1, the top of the support block 2 35 is rotatably connected to a benchmark rod 2, the top of the benchmark rod 2 slides through the top of the base plate 1, and the outer surface of the benchmark rod 2 is provided with a scale.

[0052] When the concrete core sample passes through the circular groove 44 until it contacts the top of the rear part of the discharge plate 33, the servo motor 13 stops rotating and the concrete core sample stops descending. At this time, the portion of the concrete core sample between the discharge plate 33 and the bottom plate 1 is the cutting length. The screw rod 36 is rotated, and the screw rod 36 spirally descends, driving the support block 1 34, the discharge plate 33 and the support block 2 35 to descend together, and at the same time driving the benchmark 2 to descend, thereby changing the distance between the discharge plate 33 and the bottom plate 1, thereby changing the maximum distance of each descent of the concrete core sample, thereby changing the cutting length of the concrete core sample laterally. At the same time, since the outer surface of the benchmark 2 is provided with a scale, the distance of the descent of the discharge plate 33 can be intuitively seen by observing the scale of the benchmark 2, thereby obtaining the cutting length of the concrete core sample.

[0053] In this embodiment, the rear portion of the discharge plate 33 is horizontal, the front portion of the discharge plate 33 is inclined and bent, and the bottom of the rotating frame 23 is at a height greater than the distance between the rear portion of the discharge plate 33 and the bottom plate 1 .

[0054] In this embodiment, a toggle structure 37 is provided on the outer surface of the rotating frame 23, and the toggle structure 37 includes a fixed rod 38 and a toggle rod 39. The fixed rod 38 is fixedly connected to the side of the rotating frame 23, and the toggle rod 39 is rotatably connected to one end of the fixed rod 38. The top of the toggle rod 39 passes through the top of the fixed rod 38 and is fixedly connected with a ratchet 40. The top of the fixed rod 38 is rotatably connected with a pawl 41, and the bottom of the fixed rod 38 is fixedly connected with a fixed box 42, and a coil spring 43 is provided inside the fixed box 42.

[0055] As the rotating frame 23 rotates, the fixing rod 38 and the lever 39 are driven to rotate clockwise together, until the lever 39 is pressed against the concrete core sample, so that the lever 39 rotates counterclockwise relative to the fixing rod 38, thereby driving the ratchet 40 to rotate counterclockwise, so that the inclined surface of the oblique teeth of the ratchet 40 is pressed against the pawl 41, and the pawl 41 is pressed and rotated, and the ratchet 40 can rotate normally, and the rotating frame 23 continues to rotate. After the concrete core sample is cut, the rotating frame 23 rotates counterclockwise to reset, driving the fixing rod 38 and the lever 39 to rotate counterclockwise synchronously. At this time, the lever 39 is pressed against the cut concrete core sample, so that the lever 39 is about to rotate clockwise compared with the fixed rod 38, driving the ratchet 40 to rotate clockwise, but the vertical surface of the oblique teeth of the ratchet 40 is pressed against the pawl 41, so that the ratchet 40 cannot rotate, and then the lever 39 cannot rotate clockwise compared with the fixed rod 38, so the cut concrete core sample is moved, so that the cut concrete core sample is discharged along the front inclined surface of the discharge plate 33, so as to prevent the cut concrete core sample from blocking the normal cutting of the remaining concrete core sample.

[0056] In this embodiment, the ratchet 40 is adaptively matched with the pawl 41, the bottom of the pawl 41 passes through the interior of the fixed box 42 and is fixedly connected to one end of the disc spring 43, the other end of the disc spring 43 is fixedly connected to the inner wall of the fixed box 42, and the lever 39 is located between the discharge plate 33 and the bottom plate 1.

[0057] It should be noted that the present invention is a concrete core cutting machine. When in use, the concrete core is placed inside the circular groove 44, the DC motor 25 is started, and the pulley 4 26 at the rear portion is driven to rotate, and then the pulley 4 26 at the front portion is driven to rotate synchronously through the belt 2, and then the saw blade 24 is driven to rotate. At this time, the motor 29 is started again to drive the rotating cover 27 to rotate clockwise. While the rotating cover 27 rotates clockwise, the residual tooth groove 30 and the residual gear 31 are driven to rotate synchronously clockwise, so that the gear 2 32 and the residual gear 31 are no longer meshed. At this time, the gear 2 32 and the residual tooth groove 30 begin to mesh. The gear 2 32 is engaged, and the clockwise rotation of the residual tooth groove 30 drives the gear 2 32 to rotate synchronously clockwise, and then drives the rotating frame 23 to rotate clockwise, thereby driving the saw blade 24 to rotate together with the rotating frame 23, so as to cut the concrete core sample passing through the bottom of the circular groove 44, and the rotating cover 27 continues to rotate, and the gear 2 32 is no longer engaged with the residual tooth groove 30, and the gear 2 32 begins to engage with the residual gear 31, thereby delaying the clockwise rotation of the residual gear 31 and driving the gear 2 32 to rotate counterclockwise, thereby driving the rotating frame 23 and the saw blade 24 to rotate counterclockwise, so that the saw blade 24 and the rotating frame 23 are reset;

[0058] When the concrete core sample is placed at the position of the circular groove 44, the concrete core sample is also located inside the two support rings 4. At this time, the two swivel rings 5 ​​are rotated, and the swivel ring 5 rotates, driving the full tooth groove 22 to rotate, and then driving the three gears 21 to rotate synchronously, and then driving the rotating rod 19 to rotate synchronously, so that the rotating rod 19 leaves the inside of the through groove 18 and enters the inside of the support ring 4. The swivel ring 5 is continued to be rotated, driving the three rotating rods 19 to continue to rotate synchronously. During the rotation of the swivel ring 5, the fixing block 14 and the threaded rod 15 are driven to slide along the slide rail 17. When the three pressure wheels 20 are pressed against the outer surface of the concrete core sample, the threaded rod 15 is rotated to drive the clamping plate 16 to move up. When the clamping plate 16 is pressed against the bottom of the slide rail 17, the swivel ring 5 is fixed, so that the three rotating rods 19 are fixed. Therefore, the concrete core sample is fixed by the three rotating rods 19 and the three pressure wheels 20.

[0059] The support ring 4 near the top plays a role in fixing the concrete core sample, and the support ring 4 near the bottom plays a role in limiting the concrete core sample. Therefore, the extrusion force of the three rotating rods 19 near the top on the concrete core sample is greater than the extrusion force of the three rotating rods 19 near the bottom on the concrete core sample.

[0060] When the concrete core sample is fixed, the servo motor 13 is started to drive the pulley 3 11 to rotate, and through all the belts 1 and the pulley 2 10, all the pulleys 1 9 are driven to rotate synchronously, thereby driving the three screw rods 8 to rotate synchronously, driving the two connecting blocks 6 to descend, thereby driving the support ring 4 near the top to descend, and then driving the concrete core sample to descend, so that the concrete core sample passes through the bottom of the circular groove 44 and is then cut by the saw blade 24;

[0061] After the concrete core sample passes through the circular groove 44, until it contacts the top of the rear part of the discharge plate 33, the servo motor 13 stops rotating and the concrete core sample stops descending. At this time, the portion of the concrete core sample between the discharge plate 33 and the bottom plate 1 is the cutting length. The screw rod 36 is rotated, and the screw rod 36 spirally descends, driving the support block 1 34, the discharge plate 33 and the support block 2 35 to descend together, and driving the benchmark 2 to descend, thereby changing the distance between the discharge plate 33 and the bottom plate 1, thereby changing the maximum distance of each descent of the concrete core sample, thereby changing the cutting length of the concrete core sample laterally. At the same time, since the outer surface of the benchmark 2 is provided with a scale, the descending distance of the discharge plate 33 can be intuitively seen by observing the scale of the benchmark 2, thereby obtaining the cutting length of the concrete core sample.

[0062] As the rotating frame 23 rotates, the fixing rod 38 and the lever 39 are driven to rotate clockwise together, until the lever 39 is pressed against the concrete core sample, so that the lever 39 rotates counterclockwise relative to the fixing rod 38, thereby driving the ratchet 40 to rotate counterclockwise, so that the inclined surface of the oblique teeth of the ratchet 40 is pressed against the pawl 41, and the pawl 41 is pressed and rotated, and the ratchet 40 can rotate normally, and the rotating frame 23 continues to rotate. After the concrete core sample is cut, the rotating frame 23 rotates counterclockwise to reset, driving the fixing rod 38 and the lever 39 to rotate counterclockwise synchronously. At this time, the lever 39 is pressed against the cut concrete core sample, so that the lever 39 is about to rotate clockwise compared with the fixed rod 38, driving the ratchet 40 to rotate clockwise, but the vertical surface of the oblique teeth of the ratchet 40 is pressed against the pawl 41, so that the ratchet 40 cannot rotate, and then the lever 39 cannot rotate clockwise compared with the fixed rod 38, so the cut concrete core sample is moved, so that the cut concrete core sample is discharged along the front inclined surface of the discharge plate 33, so as to prevent the cut concrete core sample from blocking the normal cutting of the remaining concrete core sample.

[0063] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A concrete core cutting machine, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is provided with a circular groove (44) extending through the bottom, the bottom of the bottom plate (1) is rotatably connected to a rotating frame (23), the top of the rotating frame (23) is rotatably connected to a saw blade (24) at one end, the inside of the rotating frame (23) is rotatably connected to two pulleys (26), a belt (2) is sleeved between the two pulleys (26), the bottom of the rotating frame (23) is fixedly connected to a DC motor (25), and a reciprocating cutting structure (45) is provided on the top of the bottom plate (1); The reciprocating cutting structure (45) comprises a rotating cover (27), the rotating cover (27) is rotatably connected to the top side of the base plate (1), a gear 2 (32) is rotatably connected to the top of the base plate (1) and located inside the rotating cover (27), a residual gear (31) is fixedly connected to the inner center of the rotating cover (27), a residual tooth groove (30) is provided on the inner wall of the rotating cover (27), a fixed plate (28) is fixedly connected to the top side of the base plate (1), and a motor (29) is fixedly connected to the top of the fixed plate (28).

2. A concrete core cutting machine according to claim 1, characterized in that: The bottom of the second gear (32) passes through the bottom of the bottom plate (1) and is fixedly connected to the top of the rotating frame (23) at the other end. The second gear (32) is meshed with the residual gear (31), and the second gear (32) is adaptively matched with the residual tooth groove (30).

3. A concrete core cutting machine according to claim 1, characterized in that: The output shaft of the DC motor (25) passes through the interior of the rotating frame (23) and is fixedly connected to the pulley four (26) at the rear, and the output shaft of the motor (29) is fixed to the bottom of the plate (28) and is fixedly connected to the rotating cover (27).

4. A concrete core cutting machine according to claim 1, characterized in that: The top of the base plate (1) is provided with a clamping stepping structure (3), which comprises two supporting rings (4) and two rotating rings (5), the two supporting rings (4) being arranged on the top of the base plate (1) in sequence from top to bottom, the rotating rings (5) being rotatably connected to the top of the supporting rings (4), three connecting blocks (6) being equidistantly fixedly connected to the outer surface of the supporting ring (4) near the top, three upright posts (7) being equidistantly fixedly connected to the top of the base plate (1), the interiors of the three upright posts (7) being A screw rod (8) is rotatably connected, wherein the bottoms of the two screw rods (8) are connected to two pulleys (9), and the bottom of the other screw rod (8) is also connected to a pulley (9). The top of the bottom plate (1) is rotatably connected to two pulleys (10), and a belt (1) is sleeved between two adjacent pulleys (9) and pulleys (10). The top of the bottom plate (1) is rotatably connected to a pulley (11), and a belt (1) is also sleeved between the pulley (9) and the pulley (11) at the bottom of one side. Three through grooves (18) are provided inside the two support rings (4), and the insides of the three through grooves (18) are all rotatably connected with a rotating rod (19), one end of the rotating rod (19) is rotatably connected with a pressure wheel (20), the tops of the three rotating rods (19) pass through the tops of the support rings (4) and are fixedly connected with a gear 1 (21), a full tooth groove (22) is provided inside the rotating ring (5) near the outer side, the outer surface of the rotating ring (5) is fixedly connected with a fixed block (14), the outer surface of the support ring (4) is fixedly connected with a slide rail (17) near the top, the top of the fixed block (14) passes through the bottom and is threadedly connected with a threaded rod (15), and the bottom of the threaded rod (15) passes through the slide rail (17) and is fixedly connected with a clamping plate (16).

5. A concrete core cutting machine according to claim 4, characterized in that: The gear one (21) is meshed with the full tooth groove (22), and the gear one (21) does not contact the inner side of the rotating ring (5), and the connecting block (6) is threadedly connected with a screw rod (8).

6. A concrete core cutting machine according to claim 4, characterized in that: The top of the base plate (1) is fixedly connected to a support plate (12) on the other side, the top of the support plate (12) is fixedly connected to a servo motor (13), the output shaft of the servo motor (13) passes through the bottom of the support plate (12) and is fixedly connected to the pulley three (11), the support ring (4) on the bottom is connected to the circular groove (44), and the support ring (4) on the bottom is fixedly connected to the base plate (1).

7. A concrete core cutting machine according to claim 1, characterized in that: A discharge plate (33) is provided at the bottom of the bottom plate (1) and at the bottom position of the circular groove (44); the rear of the discharge plate (33) is fixedly connected to a support block 1 (34); the front of the discharge plate (33) is fixedly connected to a support block 2 (35); the top of the support block 1 (34) is rotatably connected to a screw rod (36); the top thread of the screw rod (36) passes through the top of the bottom plate (1); the top of the support block 2 (35) is rotatably connected to a reference rod (2); the top of the reference rod (2) slides through the top of the bottom plate (1); and the outer surface of the reference rod (2) is provided with a scale.

8. A concrete core cutting machine according to claim 7, characterized in that: The rear portion of the discharge plate (33) is in a horizontal state, the front portion of the discharge plate (33) is in an inclined and bent state, and the bottom of the rotating frame (23) is at a height greater than the distance between the rear portion of the discharge plate (33) and the bottom plate (1).

9. A concrete core cutting machine according to claim 7, characterized in that: The outer surface of the rotating frame (23) is provided with a toggle structure (37), the toggle structure (37) comprises a fixed rod (38) and a toggle rod (39), the fixed rod (38) is fixedly connected to the side of the rotating frame (23), the toggle rod (39) is rotatably connected to one end of the fixed rod (38), the top of the toggle rod (39) passes through the top of the fixed rod (38) and is fixedly connected to a ratchet (40), the top of the fixed rod (38) is rotatably connected to a pawl (41), the bottom of the fixed rod (38) is fixedly connected to a fixed box (42), and a coil spring (43) is arranged inside the fixed box (42).

10. A concrete core cutting machine according to claim 9, characterized in that: The ratchet (40) is adaptively matched with the pawl (41), the bottom of the pawl (41) passes through the interior of the fixed box (42) and is fixedly connected to one end of the coil spring (43), the other end of the coil spring (43) is fixedly connected to the inner wall of the fixed box (42), and the lever (39) is located between the discharge plate (33) and the bottom plate (1).

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