Concrete detection core sample sampler

Abstract

The invention relates to the technical field of concrete core sampling, and discloses a concrete detection core sample sampler which comprises a bottom frame, a fixing frame is fixedly connected to one side of the top of the bottom frame, a mounting plate is slidably connected to the bottom frame, a mounting frame B is fixedly connected to the side, away from the bottom frame, of the mounting plate, and a belt pulley B is rotatably connected to the bottom of the mounting frame B; a sampling head is fixedly connected to the bottom end of the belt pulley B, a connecting cover is fixedly connected to the middle of the sampling head in an embedded mode, a two-way screw rod is rotationally connected into the connecting cover, clamping plates are in threaded connection with the two ends of the two-way screw rod, and a gear is fixedly connected to the middle of the two-way screw rod. A gear block A on the mounting rod is used for driving a gear and a two-way screw rod to rotate, so that two clamping plates are used for clamping and fixing a concrete core, and the problem that the concrete core is easy to fall off from the sampling head, so that a tool needs to be additionally found to collect concrete is solved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete core sampling, in particular to a concrete testing core sampler. Background Art

[0002] Concrete core sampler, commonly known as concrete core sampler, is a device specially used to drill core samples from concrete structures. It is often used for testing and sampling concrete pavements. Its main principle is: the sampling head is driven by a driving source to rotate at high speed, and the high-speed rotating sampling head is used to drill into the concrete. Since the sampling head is a hollow structure, when the sampling head drills through the concrete pavement, the concrete core will enter the sampling head. Then the sampling head is pulled out, and the concrete core in the sampling head is taken out, and the concrete core sampling work can be completed.

[0003] Concrete core sampler has the advantages of one machine with multiple uses, wide application range and simple operation. It is the most common concrete core sampling equipment. Concrete core sampler is mainly used for non-destructive testing and reinforcement and repair of concrete structures such as building structures, bridges, tunnels and pavements. Through coring, detailed information inside the concrete structure can be obtained, which is convenient for structural analysis and reinforcement treatment.

[0004] When the existing concrete core sampler is used to drill concrete cores in concrete pavement, when the drill bit is pulled out, the concrete core block inside the drill bit is easily dropped out of the sampling head due to gravity and reinserted into the drill hole in the pavement, resulting in the need for additional tools to clamp the concrete core, which makes the operation inconvenient. Therefore, we propose a concrete testing core sampler. Summary of the invention

[0005] The object of the present invention is to provide a concrete testing core sampler to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a concrete testing core sampler, comprising a base frame, a fixing frame is fixedly connected to one side of the top of the base frame, a mounting plate is slidably connected to the fixing frame, a mounting frame B is fixedly connected to the side of the mounting plate away from the base frame, a pulley B is rotatably connected to the bottom of the mounting frame B, a sampling head is fixedly connected to the bottom end of the pulley B, and a sampling port is provided at the bottom of the sampling head, a connecting cover is fixedly connected in the middle of the sampling head, a bidirectional screw is rotatably connected in the connecting cover, clamping plates are threadedly connected to both ends of the bidirectional screw, and a gear is fixedly connected in the middle of the bidirectional screw;

[0007] The inner top wall of the sampling head is fixedly connected with a sliding frame, a mounting rod is slidably connected inside the sliding frame, a metal plate is fixedly connected to the bottom end of the mounting rod, and a plurality of tooth blocks A and tooth blocks B are fixedly connected on both sides of the mounting rod, and the tooth block A meshes with the gear;

[0008] A fixing rod is fixedly connected inside the connecting cover, a limiting frame is fixedly connected to the fixing rod, a clamping plate is rotatably connected to the side of the limiting frame close to the metal plate, the clamping plate is located between two adjacent tooth blocks B, and the bottom of the limiting frame is slidably connected to the limiting block.

[0009] Preferably, mounting holes are provided on both sides of the limit frame, shaft rods are rotatably connected in the mounting holes, the two shaft rods are fixedly docked with the rotating shaft of the clamping plate, and a spring is fixedly connected between the shaft rod and the inner wall of the mounting hole on the same side thereof.

[0010] Preferably, a transmission rod passes through and is slidably connected to the connecting cover, and one end of the transmission rod close to the limit frame is rotatably docked with the limit block, a positioning block is fixedly connected to one side of the transmission rod, a sleeve is fixedly connected to the inner top wall of the connecting cover, and the transmission rod is located in the sleeve and slidably connected to it, a straight groove is provided on one side of the inner wall of the sleeve, an arc groove A connected to the straight groove is provided on the inner top wall of the sleeve on the side away from the limit block, and an arc groove B connected to the straight groove is provided on the inner top wall of the sleeve on the side close to the limit block, and the positioning block on the transmission rod is located in the straight groove and slidably connected to the inner wall of the straight groove.

[0011] Preferably, a screw is rotatably connected between the top wall of the fixed frame and the top of the base frame, the mounting plate is threadedly connected to the screw, a mounting frame A is fixedly connected to the side of the mounting plate close to the base frame, a motor is fixedly connected to the mounting frame A, a pulley A is fixedly connected to the output end of the motor, and a transmission belt is arranged between the pulley B and the pulley A.

[0012] Preferably, two load-bearing frames are fixedly connected to one side of the mounting plate close to the mounting frame B, a fixing ring is fixedly connected between the bottoms of the load-bearing frames, and the fixing ring is sleeved outside the sampling head and does not contact the sampling head, a plurality of evenly distributed springs are fixedly connected to the bottom of the fixing ring, telescopic rods are arranged inside the springs, mounting rings are fixedly connected between the bottom ends of the springs, and a sealing ring is fixedly connected to the bottom of the mounting ring.

[0013] Preferably, two threaded columns are threadedly connected to one side of the base frame away from the fixed frame, the bottom ends of the threaded columns are fixedly connected to a limiting disk, and the top ends of the threaded columns are fixedly connected to a turning handle B.

[0014] Preferably, the top of the fixed frame is rotatably connected to a turning handle A, and the bottom of the turning handle A is fixedly connected to the top of the screw rod, the bottom frame is fixedly connected to a handle, and the bottom of the bottom frame is rotatably connected to a plurality of pulleys.

[0015] Preferably, a shell is fixedly connected to the bottom of the mounting plate, and the shell is sleeved outside the pulley B.

[0016] Preferably, the clamping plates are all arc-shaped structures, the bottoms of the clamping plates are slidably connected to the inner bottom wall of the connecting cover, and the inner walls of the clamping plates are provided with anti-slip pads.

[0017] Preferably, one end of the transmission rod away from the limiting block is fixedly connected with a knob, and the surface of the knob is provided with a plurality of evenly distributed anti-slip grooves.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When sampling the concrete core, the present invention squeezes the metal plate through the concrete core, thereby driving the installation rod to move, and uses the tooth block A on the installation rod to drive the gear and the bidirectional screw to rotate, so that the two clamps clamp and fix the concrete core, and use the clamping plate to limit the installation rod, thereby improving the stability of the clamps, preventing the concrete core from easily falling off from the sampling head, resulting in the need to find additional tools to collect the concrete, and effectively improving the auxiliary function of the device for concrete core sampling;

[0020] 2. The present invention can change the position of the limit block by operating the transmission rod, so as to limit the rotation angle of the card plate. When the limit block is located below the card plate, the card plate can be limited at this time, and the card plate can cooperate with the tooth block B to limit the installation rod. When the limit block is moved away from the bottom of the card plate, the limit of the card plate can be released. At this time, the installation rod can be smoothly lowered and returned to the original position. In this process, the tooth block A can be used to drive the gear and the bidirectional screw to rotate in the opposite direction, so that the two clamping plates are separated from each other until they return to the original position. After the device is used, the structure in the sampling head can be quickly returned to the initial state, which is convenient for continuous concrete sampling.

[0021] 3. When the present invention is performing concrete sampling, when the mounting plate is lowered, the sealing ring will first contact the ground and block the drilling point, and use the rebound force of the spring to improve the tightness between the sealing ring and the ground. At this time, during the drilling process, when spraying water to cool the sampling head, the sealing ring can be used to preserve the water to avoid the problem of excessive water loss and the need for continuous water spraying operations. At the same time, the mounting ring and the sealing ring can cooperate to block the concrete blocks splashed out during the drilling process, thereby improving the protection of the device to the surrounding personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the bottom structure of the chassis of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the mounting plate of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the load-bearing frame and its connecting parts of the present invention;

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure of the sampling head of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the mounting rod and the limiting frame of the present invention;

[0028] Figure 7 It is a schematic diagram of the cross-sectional structure of the limiting frame of the present invention;

[0029] Figure 8 It is a schematic diagram of the connection structure between the transmission rod and the sleeve of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the casing of the present invention;

[0031] Fig.10 For the present invention Figure 5 A schematic diagram of the enlarged structure of area A shown;

[0032] Fig.11 For the present invention Figure 6 Schematic diagram of the enlarged structure of area B is shown.

[0033] In the figure: 1, base frame; 11, fixed frame; 12, screw rod; 13, turning handle A; 14, handle; 15, pulley; 2, mounting plate; 21, mounting frame A; 22, motor; 23, pulley A; 3, mounting frame B; 31, housing; 32, pulley B; 33, transmission belt; 4, sampling head; 41, connecting cover; 42, two-way screw rod; 43, clamping plate; 44, gear; 5, sliding frame; 51, mounting rod; 52, metal plate; 53, gear block A; 54, tooth block B; 6, fixing rod; 61, limit frame; 62, clamping plate; 63, mounting hole; 64, shaft; 65, spring; 7, transmission rod; 71, limit block; 72, knob; 73, positioning block; 74, sleeve; 75, straight groove; 76, arc groove A; 77, arc groove B; 8, load-bearing frame; 81, fixing ring; 82, spring; 83, mounting ring; 84, sealing ring; 9, threaded column; 91, limit plate; 92, handle B. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-11 The present invention provides a technical solution: a concrete testing core sampler, comprising a base frame 1, a fixing frame 11 is fixedly connected to one side of the top of the base frame 1, a screw rod 12 is rotatably connected between the top wall of the fixing frame 11 and the top of the base frame 1, a mounting plate 2 is slidably connected to the fixing frame 11, the mounting plate 2 is threadedly connected to the screw rod 12, a turning handle A13 is rotatably connected to the top of the fixing frame 11, and the bottom of the turning handle A13 is fixedly docked with the top of the screw rod 12, a handle 14 is fixedly connected to the base frame 1, and the base frame 1 The bottom is rotatably connected with several pulleys 15, and two threaded columns 9 are threadedly connected to the side of the bottom frame 1 away from the fixed frame 11. The bottom end of the threaded column 9 is fixedly connected to a limiting disk 91, and the top of the threaded column 9 is fixedly connected to a turning handle B92. The bottom of the limiting disk 91 is provided with an anti-slip pad, and the threaded column 9 is driven to rotate by the turning handle B92. When the threaded column 9 rotates, it will move downward. When the limiting disk 91 is against the ground, the entire device can be temporarily limited to avoid the problem that the pulley 15 rotates due to external force factors, thereby causing the device to move. When the sampling work is completed, the threaded column 9 can be rotated in the opposite direction by turning the turning handle B92 to make the threaded column 9 rise, so that the limiting disk 91 is separated from the ground, and the device can continue to be pushed to move. The side of the mounting plate 2 close to the bottom frame 1 is fixedly connected to a mounting frame A21, and a motor 22 is fixedly connected to the mounting frame A21. The output end of the motor 22 is fixedly connected to a pulley A23, and the side of the mounting plate 2 away from the bottom frame 1 is fixedly connected to a mounting frame B3. The bottom of the mounting frame B3 A pulley B32 is rotatably connected, a transmission belt 33 is arranged between the pulley B32 and the pulley A23, a sampling head 4 is fixedly connected to the bottom end of the pulley B32, and a sampling port is provided at the bottom of the sampling head 4, a shell 31 is fixedly connected to the bottom of the mounting plate 2, and the shell 31 is sleeved outside the pulley B32, and a water pump is installed on the top of the mounting frame B3. When coring concrete, the water pump can be connected to the water pipe, and then the water pump is used to discharge water along the sampling head 4 to cool the sampling head 4.

[0036] Furthermore, when using the device, first hold the handle 14, use the pulley 15 to push the device to the designated work location, then turn each turn handle B92 in turn to move the threaded column 9 downward. When the limit plate 91 is against the ground, the entire device can be fixed, and then start the motor 22 to drive the pulley A23 to rotate. During the rotation of the pulley A23, the pulley B32 can be driven to rotate through the transmission belt 33, so that the sampling head 4 can be driven to rotate by the pulley B32. At this time, manually turn the turn handle A13 to drive the screw rod 12 to rotate. The rotating screw rod 12 can drive the mounting plate 2 to descend along the fixing frame 11, and cooperate with the high-speed rotating sampling head 4 to drill holes in the concrete pavement, and make the drilled concrete core enter the sampling head 4. After drilling and coring, turn off the motor 22 to stop the sampling head 4, and then reversely rotate the handle A13 to drive the screw rod 12 to rotate in the opposite direction. At this time, the reversely rotating screw rod 12 will drive the mounting plate 2 to rise along the fixing frame 11. At this time, the mounting plate 2 will drive the sampling head 4 to rise together, and use the sampling head 4 to take out the concrete core, and the concrete core sampling work can be completed.

[0037] Combined with Figure 1 , Figure 5 , Figure 6 , Figure 7 , Fig.10 and Fig.11As shown, a connecting cover 41 is fixedly connected in the middle of the sampling head 4, a bidirectional screw 42 is rotatably connected in the connecting cover 41, both ends of the bidirectional screw 42 are threadedly connected with clamping plates 43, a gear 44 is fixedly connected in the middle of the bidirectional screw 42, the clamping plates 43 are all arc-shaped structures, the bottoms of the clamping plates 43 are slidably connected to the inner bottom wall of the connecting cover 41, the inner walls of the clamping plates 43 are provided with anti-slip pads, the inner top wall of the sampling head 4 is fixedly connected with a sliding frame 5, and a mounting rod 51 is slidably connected in the sliding frame 5, the bottom end of the mounting rod 51 is fixedly connected with a metal plate 52, the metal plate 52 and the bidirectional screw 42 are both located in the middle position of the connecting cover 41, and the bottom end of the mounting rod 51 is fixedly connected to one side of the top of the metal plate 52, so that after the concrete core reaches the metal plate 52, the clamping plates 43 on both sides will move closer to the middle. When the concrete core sampling is completed, the clamping plates 43 on both sides are just in contact with the outer wall of the concrete core to improve the clamping stability of the concrete core. A number of tooth blocks A53 and tooth blocks B54 are fixedly connected to the two sides of the mounting rod 51, and the tooth block A53 meshes with the gear 44. A fixing rod 6 is fixedly connected inside the connecting cover 41, and a limiting frame 61 is fixedly connected to the fixing rod 6. The limiting frame 61 is rotatably connected to a clamping plate 62 on one side close to the metal plate 52, and the clamping plate 62 is located between two adjacent tooth blocks B54. The bottom of the limiting frame 61 is slidably connected to the limiting block 71. Mounting holes 63 are provided on both sides of the limiting frame 61, and shaft rods 64 are rotatably connected in the mounting holes 63. The two shaft rods 64 are fixedly docked with the rotating shaft of the clamping plate 62, and a spring 65 is fixedly connected between the shaft rod 64 and the inner wall of the mounting hole 63 on the same side thereof.

[0038] Furthermore, when the sampling head 4 drills the concrete core, the sampling head 4 will continue to drill into the ground, and when the drilled concrete core is lowered as the sampling head 4 descends, it will eventually abut against the metal plate 52, and as the sampling head 4 continues to descend, it will exert pressure on the metal plate 52, at which time the metal plate 52 will drive the mounting rod 51 to slide upward along the sliding frame 5. During this process, the mounting rod 51 drives the gear 44 to rotate through the tooth block A53, and drives the bidirectional screw 42 to rotate through the gear 44. During the rotation of the bidirectional screw 42, the clamps 43 at both ends of the clamps 43 are closed until the clamps 43 are attached to the two sides of the concrete core to clamp and fix the concrete core. When the drilling work is completed, the sampling head 4 is removed from the borehole in the road surface. At this time, since the clamping plate 43 clamps and fixes the concrete core, the concrete core can be taken out together when the sampling head 4 is taken out from the drill hole. In the process of the mounting rod 51 rising, it will apply an upward thrust to the clamping plate 62 through the tooth block B54, so that the clamping plate 62 rotates upward. After the clamping plate 62 rotates, the distance between the side close to the mounting rod 51 and the mounting rod 51 will become longer. At this time, the tooth block B54 can smoothly pass over the clamping plate 62. After the tooth block B54 passes over the clamping plate 62, the rebound force of the spring 65 will drive the clamping plate 62 to rotate in the opposite direction and return it to its original position. The limit block 71 is used to support the bottom of the clamping plate 62 so that the clamping plate 62 will not fall downward. The clamping plate 62 can be used to limit the tooth block B54 in one direction to prevent the installation rod 51 from automatically sliding down, and at the same time, the clamping plate 43 can be clamped more stably. When the sampling head 4 brings out the concrete core, the limit block 71 is moved to move the limit block 71 away from under the clamping plate 62. At this time, the limit on the bottom of the clamping plate 62 disappears, and the limit on the tooth block B54 by the clamping plate 62 will also disappear. The clamping plate 43 will become loose, and the concrete core will slide downward due to gravity. At this time, the metal plate 52 will drive the installation rod 51 to move downward by its own weight. In the process of the installation rod 51 moving downward, it will use the tooth block A53 to drive the gear 44 to rotate in the opposite direction, and use the gear 44 to drive the bidirectional screw 42 to rotate in the opposite direction. The two-way screw 42 rotates in the opposite direction and drives the clamping plates 43 at both ends thereof to separate from each other, releasing the clamping state of the concrete core. At this time, the concrete core will smoothly fall off from the sampling head 4 to complete the sampling work. In this process, since the limit of the clamping plate 62 disappears, the mounting rod 51 can use the tooth block B54 to apply a downward pressure to the clamping plate 62 during the descent process, so that the clamping plate 62 rotates downward, so that each tooth block B54 can smoothly pass over the clamping plate 62. After the tooth block B54 passes over the clamping plate 62, the rebound function of the spring 65 will continue to drive the clamping plate 62 to rotate upward, so that the clamping plate 62 returns to its original position, so that the limit block 71 can be used to limit and support the clamping plate 62 in the future.

[0039] Combined with Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.11 As shown, a transmission rod 7 passes through and is slidably connected to the connecting cover 41, and one end of the transmission rod 7 close to the limit frame 61 is rotatably connected to the limit block 71, and a positioning block 73 is fixedly connected to one side of the transmission rod 7, and a sleeve 74 is fixedly connected to the inner top wall of the connecting cover 41, and the transmission rod 7 is located in the sleeve 74 and is slidably connected to it. A linear groove 75 is opened on one side of the inner wall of the sleeve 74, and the linear groove 75 can cooperate with the positioning block 73 to limit the moving direction and moving distance of the transmission rod 7, so as to avoid the problem that the transmission rod 7 moves too far and causes the limit block 71 to fall off from the limit frame 61. An arc groove A76 connected to the straight groove 75 is formed on the inner top wall of the side of the tube 74 away from the limit block 71, and an arc groove B77 connected to the straight groove 75 is formed on the inner top wall of the side of the sleeve 74 close to the limit block 71. The positioning block 73 on the transmission rod 7 is located in the straight groove 75 and is slidably connected to the inner wall of the straight groove 75. The arc groove A76 and the arc groove B77 can cooperate with the positioning block 73 to limit the rotation direction and rotation angle of the transmission rod 7. The end of the transmission rod 7 away from the limit block 71 is fixedly connected to a knob 72, and the surface of the knob 72 is provided with a plurality of evenly distributed anti-slip grooves.

[0040] Furthermore, when the coring work is carried out, the hand-held knob 72 is rotated to drive the transmission rod 7 to rotate, so that the positioning block 73 moves from the arc groove A76 to the linear groove 75 of the casing 74, and then the transmission rod 7 is pushed, and the transmission rod 7 is used to drive the limit block 71 to move, so that the limit block 71 moves to the bottom of the clamping plate 62, and the bottom of the clamping plate 62 is limited and supported, and then the transmission rod 7 is rotated in the opposite direction to make the positioning block 73 rotate from the linear groove 75 to the arc groove B77, so that the transmission rod 7 can be limited, and the limit block 71 can be limited and fixed. When the coring is completed, the concrete core needs to be taken out of the sampling head 4. When the metal plate 52 is out and reset, the transmission rod 7 is rotated to move the positioning block 73 from the arc groove B77 to the straight groove 75, and then the transmission rod 7 is pulled toward the outside of the connecting cover 41. At this time, the transmission rod 7 is used to drive the limit block 71 to move, and the limit block 71 will be moved from the bottom of the card plate 62, releasing the limiting work on the bottom of the card plate 62, and then the transmission rod 7 is rotated in the opposite direction again to move the positioning block 73 from the straight groove 75 to the arc groove A76, so as to limit the transmission rod 7 and avoid the limit block 71 from moving back to the bottom of the card plate 62 due to external force factors, causing the problem of limiting the card plate 62.

[0041] Combined with Figure 1 , Figure 2 and Figure 4As shown, two load-bearing frames 8 are fixedly connected to one side of the mounting plate 2 close to the mounting frame B3, a fixing ring 81 is fixedly connected between the bottoms of the two load-bearing frames 8, and the fixing ring 81 is sleeved outside the sampling head 4 and does not contact the sampling head 4, a plurality of evenly distributed springs 82 are fixedly connected to the bottom of the fixing ring 81, and telescopic rods are arranged in the springs 82, and by arranging the telescopic rods in the springs 82, the springs 82 can be limited by the telescopic rods, so that the springs 82 are more stable when contracted and reversely pressurized, a mounting ring 83 is fixedly connected between the bottom ends of all the springs 82, and a sealing ring 84 is fixedly connected to the bottom of the mounting ring 83, and the sealing ring 84 is made of rubber material, which has a certain ductility. After being squeezed, it can better fit closely to the ground, because the greater the pressure on the spring 82, the greater its reaction force, so during the descending process of the mounting plate 2, the spring 82 contracts and applies more and more thrust to the mounting ring 83, so that the sealing ring 84 fits more closely to the ground.

[0042] Furthermore, when coring concrete, the sampling head 4 is aligned with the drilling point on the ground, and then the mounting plate 2 is controlled to descend. During the descent of the mounting plate 2, the sealing ring 84 will first contact the ground and block the drilling point. As the drilling gets deeper, the mounting plate 2 drops lower. At this time, the pressure applied by the mounting plate 2 will cause the spring 82 to contract, and the rebound characteristics of the spring 82 will make the sealing ring 84 contact the ground more closely, thereby preserving the water sprayed around the drill hole during sampling, avoiding the problem of rapid loss of water after spraying water on the road surface during summer work, resulting in the need for continuous spraying of water, which easily causes a waste of water resources. At the same time, the mounting ring 83 and the sealing ring 84 can cooperate to block the concrete blocks splashed out during drilling, providing certain protection for the staff around the device.

[0043] Working principle: When using the device, first hold the handle 14 and use the pulley 15 to push the device to the designated work location, then turn each turn handle B92 in turn to move the threaded column 9 downward. When the limit plate 91 is against the ground, the entire device can be fixed. Then start the motor 22 to drive the pulley A23 to rotate. During the rotation of the pulley A23, the pulley B32 can be driven to rotate through the transmission belt 33, so that the sampling head 4 can be driven to rotate by the pulley B32. At this time, manually turn the turn handle A1 3. The screw rod 12 is driven to rotate by the turning handle A13. The rotating screw rod 12 can drive the mounting plate 2 to descend along the fixing frame 11. During the descent of the mounting plate 2, the sealing ring 84 will first contact the ground and block the drilling point. As the drilling hole gets deeper, the mounting plate 2 drops lower. At this time, the pressure applied by the mounting plate 2 will cause the spring 82 to contract. The rebound characteristic of the spring 82 will make the sealing ring 84 contact the ground more closely, thereby preserving the water sprayed around the drilling hole during sampling.

[0044] When the high-speed rotating sampling head 4 contacts the concrete pavement, as the mounting plate 2 continues to descend, the concrete pavement can be drilled and the concrete core can be received into the sampling port of the sampling head 4;

[0045] When the sampling head 4 drills the concrete core, the transmission rod 7 is rotated by turning the knob 72, so that the positioning block 73 moves from the arc groove A76 to the linear groove 75 of the sleeve 74, and then the transmission rod 7 is pushed to drive the limit block 71 to move, so that the limit block 71 moves to the bottom of the card plate 62 to limit the bottom of the card plate 62, and then the transmission rod 7 is rotated in the opposite direction to rotate the positioning block 73 from the linear groove 75 to the arc groove B77, so that the transmission rod 7 can be limited, and the limit block 71 can be fixed to the limit position of the limit block 71. 1 is limited and fixed, and the sampling head 4 will continue to drill into the ground. When the drilled concrete core is lowered with the sampling head 4, it will eventually abut against the metal plate 52. As the sampling head 4 continues to descend, it will exert pressure on the metal plate 52. At this time, the metal plate 52 will drive the mounting rod 51 to slide upward along the sliding frame 5. In this process, the mounting rod 51 drives the gear 44 to rotate through the gear block A53, and drives the bidirectional screw 42 to rotate through the gear 44. During the rotation of the bidirectional screw 42, the clamping plates at both ends of the bidirectional screw 42 43 is closed until the clamping plates 43 are attached to both sides of the concrete core to clamp and fix the concrete core. When the drilling work is completed, the sampling head 4 is taken out from the road surface drilled hole. At this time, since the clamping plates 43 clamp and fix the concrete core, the concrete core can be taken out together when the sampling head 4 is taken out from the drilled hole. During the rising process of the mounting rod 51, it will apply an upward thrust to the clamping plate 62 through the tooth block B54, so that the clamping plate 62 rotates upward, and after the clamping plate 62 rotates, it is close to the mounting rod The distance between one side of 51 and the mounting rod 51 will become longer, and the tooth block B54 can smoothly pass over the card plate 62 at this time. After the tooth block B54 passes over the card plate 62, the rebound force of the spring 65 will drive the card plate 62 to rotate in the opposite direction, so that it returns to its original position, and the limit block 71 is used to support the bottom of the card plate 62 so that the card plate 62 will not rotate downward. At this time, the card plate 62 can be used to limit the tooth block B54 in one direction to prevent the mounting rod 51 from automatically sliding down, and at the same time, the clamping of the clamping plate 43 is more stable.

[0046] After the sampling head 4 brings out the concrete core, the motor 22 is turned off to stop the sampling head 4, and then the handle A13 is turned in the reverse direction to drive the screw rod 12 to rotate in the reverse direction. At this time, the screw rod 12 rotating in the reverse direction will drive the mounting plate 2 to rise along the fixing frame 11, and the mounting plate 2 will drive the sampling head 4 to rise together. Then, the device is rotated to move the sampling head 4 away from the top of the road surface drilling hole, and then the transmission rod 7 is rotated to move the positioning block 73 from the arc groove B77 to the linear groove 75, and then the transmission rod 7 is pulled toward the outside of the connecting cover 41. At this time, the transmission rod 7 is used to move the positioning block 73 from the arc groove B77 to the linear groove 75. The limit block 71 is driven to move, and the limit block 71 will be moved from the bottom of the card plate 62, releasing the limit work on the bottom of the card plate 62, and then the transmission rod 7 is rotated in the opposite direction again to move the positioning block 73 from the linear groove 75 to the arc groove A76, so that the transmission rod 7 can be limited, and the limit block 71 is moved from the bottom of the card plate 62. At this time, the limit on the bottom of the card plate 62 disappears, and the limit of the card plate 62 on the tooth block B54 will also disappear, the clamping plate 43 will become loose, and the concrete core will slide downward due to gravity. At this time, the metal plate 52 relies on its own The weight will drive the installation rod 51 to move downward. During the downward movement of the installation rod 51, it will use the tooth block A53 to drive the gear 44 to rotate in the opposite direction, and use the gear 44 to drive the bidirectional screw 42 to rotate in the opposite direction. The bidirectional screw 42 rotating in the opposite direction will drive the clamping plates 43 at both ends to separate from each other, releasing the clamping state of the concrete core. At this time, the concrete core will smoothly fall off from the sampling head 4, completing the sampling work. In this process, since the limit of the clamping plate 62 disappears, the installation rod 51 can use the tooth block B54 to clamp the clamping plate during the descent process. 62 applies a downward pressure to make the card plate 62 rotate downward, so that each tooth block B54 can smoothly pass over the card plate 62. After the tooth block B54 passes over the card plate 62, the rebound function of the spring 65 will continue to drive the card plate 62 to rotate upward, so that the card plate 62 returns to its original position, which is convenient for the subsequent use of the limit block 71 to limit the support of the card plate 62. When the sampling work is completed, the threaded column 9 can be rotated in the opposite direction by turning the handle B92 to make the threaded column 9 rise, thereby separating the limit plate 91 from the ground, and the device can continue to be pushed to move.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. 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 variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete testing core sampler, comprising a base frame (1), a fixing frame (11) is fixedly connected to one side of the top of the base frame (1), a mounting plate (2) is slidably connected to the fixing frame (11), a mounting frame B (3) is fixedly connected to the side of the mounting plate (2) away from the base frame (1), a pulley B (32) is rotatably connected to the bottom of the mounting frame B (3), a sampling head (4) is fixedly connected to the bottom end of the pulley B (32), and a sampling port is provided at the bottom of the sampling head (4), wherein: A connecting cover (41) is fixedly connected in the middle of the sampling head (4), a bidirectional screw (42) is rotatably connected in the connecting cover (41), clamping plates (43) are threadedly connected at both ends of the bidirectional screw (42), and a gear (44) is fixedly connected in the middle of the bidirectional screw (42); The inner top wall of the sampling head (4) is fixedly connected to a sliding frame (5), a mounting rod (51) is slidably connected inside the sliding frame (5), a metal plate (52) is fixedly connected to the bottom end of the mounting rod (51), and a plurality of tooth blocks A (53) and tooth blocks B (54) are fixedly connected to both sides of the mounting rod (51), and the tooth block A (53) is meshed with the gear (44); A fixing rod (6) is fixedly connected inside the connection cover (41), a limiting frame (61) is fixedly connected to the fixing rod (6), a clamping plate (62) is rotatably connected to a side of the limiting frame (61) close to the metal plate (52), the clamping plate (62) is located between two adjacent tooth blocks B (54), and the bottom of the limiting frame (61) is slidably connected to a limiting block (71).

2. A concrete core sampler according to claim 1, characterized in that: Both sides of the limit frame (61) are provided with mounting holes (63), and shafts (64) are rotatably connected in the mounting holes (63). The two shafts (64) are fixedly connected to the rotating shaft of the clamping plate (62), and a spring (65) is fixedly connected between the shaft (64) and the inner wall of the mounting hole (63) on the same side thereof.

3. A concrete core sampler according to claim 1, characterized in that: A transmission rod (7) passes through and is slidably connected to the connection cover (41); one end of the transmission rod (7) close to the limit frame (61) is rotatably connected to the limit block (71); a positioning block (73) is fixedly connected to one side of the transmission rod (7); a sleeve (74) is fixedly connected to the inner top wall of the connection cover (41); the transmission rod (7) is located in the sleeve (74) and is slidably connected to the sleeve; a linear groove (75) is provided on one side of the inner wall of the sleeve (74); an arc groove A (76) communicating with the linear groove (75) is provided on the inner top wall of the sleeve (74) on the side away from the limit block (71); an arc groove B (77) communicating with the linear groove (75) is provided on the inner top wall of the sleeve (74) on the side close to the limit block (71); the positioning block (73) on the transmission rod (7) is located in the linear groove (75) and is slidably connected to the inner wall of the linear groove (75).

4. A concrete core sampler according to claim 1, characterized in that: A screw rod (12) is rotatably connected between the inner top wall of the fixing frame (11) and the top of the base frame (1); the mounting plate (2) is threadedly connected to the screw rod (12); a mounting frame A (21) is fixedly connected to the side of the mounting plate (2) close to the base frame (1); a motor (22) is fixedly connected to the mounting frame A (21); a pulley A (23) is fixedly connected to the output end of the motor (22); and a transmission belt (33) is provided between the pulley B (32) and the pulley A (23).

5. A concrete core sampler according to claim 1, characterized in that: Two load-bearing frames (8) are fixedly connected to one side of the mounting plate (2) close to the mounting frame B (3); a fixing ring (81) is fixedly connected between the bottoms of the load-bearing frames (8); the fixing ring (81) is sleeved outside the sampling head (4) and does not contact the sampling head (4); a plurality of evenly distributed springs (82) are fixedly connected to the bottom of the fixing ring (81); a telescopic rod is arranged inside each of the springs (82); a mounting ring (83) is fixedly connected between the bottom ends of the springs (82); and a sealing ring (84) is fixedly connected to the bottom of the mounting ring (83).

6. A concrete core sampler according to claim 1, characterized in that: Two threaded columns (9) are threadedly connected to a side of the base frame (1) away from the fixed frame (11); the bottom ends of the threaded columns (9) are fixedly connected to a limit plate (91); and the top ends of the threaded columns (9) are fixedly connected to a turning handle B (92).

7. A concrete core sampler according to claim 1, characterized in that: The top of the fixed frame (11) is rotatably connected to a turning handle A (13), and the bottom of the turning handle A (13) is fixedly connected to the top of the screw rod (12). The bottom frame (1) is fixedly connected to a handle (14), and the bottom of the bottom frame (1) is rotatably connected to a plurality of pulleys (15).

8. A concrete core sampler according to claim 4, characterized in that: The bottom of the mounting plate (2) is fixedly connected with a housing (31), and the housing (31) is sleeved outside the pulley B (32).

9. A concrete core sampler according to claim 1, characterized in that: The clamping plates (43) are all arc-shaped structures, the bottoms of the clamping plates (43) are slidably connected to the inner bottom wall of the connecting cover (41), and the inner walls of the clamping plates (43) are all provided with anti-slip pads.

10. A concrete core sampler according to claim 3, characterized in that: One end of the transmission rod (7) away from the limiting block (71) is fixedly connected to a knob (72), and a surface of the knob (72) is provided with a plurality of evenly distributed anti-slip grooves.

Images