Concrete multi-directional cutting equipment

Abstract

The invention belongs to the technical field of concrete sample processing, and particularly relates to a concrete multi-directional cutting device which comprises a cutting platform, a cutting cutter head, a cutting device and a cutting device. And the adjusting mechanism is used for conducting multi-direction adjustment on the cutting cutterhead to meet the cutting requirements under different conditions, the adjusting mechanism comprises a transverse adjusting assembly, a longitudinal adjusting assembly and a track adjusting assembly, the transverse adjusting assembly is used for conducting transverse adjustment on the cutting cutterhead, and the longitudinal adjusting assembly is used for conducting longitudinal adjustment on the cutting cutterhead. By arranging the adjusting mechanism, before cutting, the position of the cutting guide rail can be accurately adjusted through the transverse adjusting assembly and the longitudinal adjusting assembly, the rotating angle of the cutting guide rail is adjusted through a third motor, and therefore the position and the cutting track of a cutting cutterhead below the cutting guide rail are flexibly adjusted; and the cutting track of the cutter head meets the requirement, and the application range is wider.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete sample processing, and in particular relates to a device for multi-directional cutting of concrete. Background Art

[0002] Concrete specimens are representative samples taken from concrete mixtures and used to test various performance indicators of concrete to evaluate whether the quality of concrete meets engineering requirements. After the concrete specimens are processed, performance tests are required. However, this performance test has strict regulations on the size of concrete specimens. For example, when conducting compressive strength tests, the standard specimen size is usually a cube with a side length of 150mm. However, the size of concrete specimens cast on site or initially prepared is often irregular and cannot be used directly for testing. Therefore, it is necessary to cut the concrete specimens and process them into standard sizes to ensure the accuracy and comparability of the test results.

[0003] However, the existing concrete cutting equipment still has the following technical problems during use: During the cutting process, the position and cutting trajectory of the cutting disc cannot be flexibly adjusted, and the concrete specimen cannot be accurately cut in different directions, resulting in the need to turn the concrete specimen after each cutting. The operation is cumbersome, reducing the cutting efficiency. At the same time, it is impossible to complete the cutting at a specific angle, and the scope of application is very limited; During the cutting process, the hardness of concrete samples is different, and the cutting speed of the cutting disc in the existing cutting equipment is often fixed, and the cutting speed cannot be adjusted in real time according to the hardness of the concrete sample. For concrete samples with higher hardness, more cutting force is usually required because their structure is denser and their compressive strength is higher, which will cause excessive heat to be generated during the cutting process, thereby accelerating the wear of the tool. At this time, the cutting speed cannot be properly reduced to ensure the smoothness and accuracy of the cutting. For concrete samples with lower hardness, they are more easily cut by the cutting disc during cutting. At this time, the cutting speed cannot be properly increased to avoid irregular cutting marks, edge collapse or fragmentation on the concrete surface, resulting in an uneven cutting surface, and even causing larger debris or damage to the sample, reducing the cutting effect. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-directional concrete cutting device that can flexibly adjust the position and cutting trajectory of the cutting disc under the cutting guide rail so that the cutting trajectory of the cutting disc meets the requirements in order to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A device for multi-directional cutting of concrete, comprising: A cutting platform, wherein a cutting disc is provided above the cutting platform; An adjustment mechanism, used for adjusting the cutting disc in multiple directions to meet cutting requirements in different situations, the adjustment mechanism includes a lateral adjustment component, a longitudinal adjustment component and a trajectory adjustment component, the lateral adjustment component is used for adjusting the cutting disc in lateral direction, the longitudinal adjustment component is used for adjusting the cutting disc in longitudinal direction, and the trajectory adjustment component is used for adjusting the cutting trajectory of the cutting disc; The positioning mechanism is provided with two groups and is symmetrically distributed above the cutting platform, and is used to clamp and position the concrete sample before cutting; A hardness testing mechanism, used to test the hardness of the concrete sample to be cut; The feedback mechanism is used to adjust the cutting speed of the cutting disc in real time according to the hardness of the concrete sample detected.

[0006] Preferably, the lateral adjustment assembly includes a U-shaped frame linearly slidably connected to the upper end of the cutting platform, and two first threaded rods that rotate synchronously are rotatably connected above the cutting platform. The two sides of the U-shaped frame are respectively threadedly connected to the two first threaded rods, and the upper end of the cutting platform is fixedly connected to a first motor, which is used to drive one of the two first threaded rods to rotate, and the ends of the two first threaded rods away from the first motor are connected through a synchronous wheel group.

[0007] Preferably, the longitudinal adjustment assembly includes a second threaded rod rotatably connected between the two side walls of the U-shaped frame, the lower wall of the U-shaped frame is linearly slidably connected to a moving block, the moving block is threadedly connected to the second threaded rod, and one end of the U-shaped frame is fixedly connected to a second motor for driving the second threaded rod.

[0008] Preferably, the trajectory adjustment assembly includes a cutting guide rail rotatably connected to the bottom of the moving block, a third motor for driving the cutting guide rail to rotate is provided inside the moving block, a slider is linearly slidably connected inside the cutting guide rail, a reciprocating screw is rotatably connected inside the cutting guide rail, the slider is threadedly connected to the reciprocating screw, a fourth motor for driving the reciprocating screw is fixedly connected to one side wall of the cutting guide rail, two electric hydraulic rods are fixedly connected to the lower end of the slider, the output ends of the two electric hydraulic rods are fixedly connected to a U-shaped mounting frame, the cutting disc is rotatably connected between the inner walls on both sides of the U-shaped mounting frame, and a high-speed motor for driving the cutting disc to rotate is provided on one side of the U-shaped mounting frame.

[0009] Preferably, the positioning mechanism includes a support block fixedly connected to the upper end of the cutting platform, a third threaded rod is rotatably connected to one side wall of the support block, a low-speed motor for driving the third threaded rod is fixedly connected to the other side wall of the support block, a rectangular sleeve is threadedly connected to the third threaded rod, the rectangular sleeve is linearly slidably connected to the upper end of the cutting platform, L-shaped rods are fixedly connected to both side walls of the rectangular sleeve, and a positioning plate is fixedly connected to one end of the two L-shaped rods away from the rectangular sleeve.

[0010] Preferably, the hardness detection mechanism includes a detection block fixedly connected to the middle position of one of the positioning plates, the detection block is provided with a through slot, an extrusion block is slidably connected in the through slot, two support plates are fixedly connected to the side wall of the detection block, a bidirectional threaded rod is rotatably connected between the two support plates, a fifth motor for driving the bidirectional threaded rod is fixedly connected to the upper end of one of the support plates, threads with opposite spiral directions are symmetrically provided on the upper and lower sides of the bidirectional threaded rod, and the threads on the upper and lower sides of the bidirectional threaded rod are A movable plate is threadedly connected, and one side of the two movable plates is hinged with a roller through a hinge seat, a trapezoidal block is provided between the two rollers, a telescopic rod is fixedly connected to a side wall of the trapezoidal block close to the extrusion block, the telescopic end of the telescopic rod is fixedly connected to the extrusion block, a spring is provided between the extrusion block and the trapezoidal block, and the spring is sleeved on the circumference of the telescopic rod, the two rollers respectively contact and roll with the upper and lower inclined side walls of the trapezoidal block, and a conductive sheet is provided on a side wall where the extrusion block and the through slot are in contact, and the two conductive sheets are electrically connected to the fifth motor.

[0011] Preferably, the feedback mechanism includes a resistance rod fixedly connected between two support plates, and two sliding plates are slidingly fitted through the resistance rod. The two sliding plates are fixedly connected to two movable plates respectively, and a sliding rheostat is formed between the resistance rod and the two sliding plates, and the sliding rheostat is electrically connected to the high-speed motor.

[0012] Preferably, a limiting plate is fixedly connected to the side wall of the detection block, a side of the trapezoidal block close to the limiting plate is fixedly connected to the limiting block, and the limiting block is linearly slidably connected to the side wall of the limiting plate.

[0013] Compared with the existing technology, the advantages of this multi-directional concrete cutting equipment are: The present invention provides an adjustment mechanism. Before cutting, the position of the cutting guide rail can be accurately adjusted by a lateral adjustment component and a longitudinal adjustment component, and the rotation angle of the cutting guide rail can be adjusted by a third motor, so as to flexibly adjust the position and cutting trajectory of the cutting disc under the cutting guide rail, so that the cutting trajectory of the cutting disc meets the requirements, and there is no need to turn the concrete sample after each cutting. The operation is convenient, the cutting efficiency is improved, and the scope of application is wider.

[0014] The present invention provides a positioning mechanism. Before cutting, the third threaded rod can be driven to rotate by a low-speed motor, thereby driving the two rectangular sleeves to approach each other, and further driving the two positioning plates to approach each other, so as to clamp and position the concrete sample, improve the stability during the cutting process, and thus improve the cutting effect.

[0015] The present invention provides a hardness detection mechanism. After the concrete is positioned, the bidirectional threaded rod is driven to rotate by the fifth motor, so that the two rollers collide and push the trapezoidal block to gradually approach the extrusion block. When the concrete sample is broken under the extrusion, the two conductive sheets are slightly misaligned, and the fifth motor is immediately powered off. The position of the roller on the inclined side wall of the trapezoidal block can detect the hardness of the concrete sample, which is convenient for the staff to detect and record the hardness of the concrete sample, saving the workload of subsequent performance testing.

[0016] The present invention sets a feedback mechanism. During the hardness detection process, the two movable plates approach each other, which will drive the two sliders to approach each other on the resistance rod. Therefore, the power of the high-speed motor can be adjusted through the sliding rheostat formed between the resistance rod and the two sliders. The cutting speed of the cutting disc on the concrete sample can be adjusted according to the hardness of the concrete sample, thereby ensuring the flatness of the cutting surface and the cutting effect of concrete samples with different hardness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 The enlarged view of point A in the middle; Figure 3 It is a partial structural schematic diagram of the positioning mechanism in the present invention; Figure 4 yes Figure 3 The enlarged view of point B in the middle; Figure 5 It is a schematic diagram of the cross-sectional structure of the detection block in the present invention.

[0018] In the figure: 1, cutting platform; 11, cutting blade; 2, adjustment mechanism; 21, lateral adjustment assembly; 211, U-shaped frame; 212, first threaded rod; 213, first motor; 22, longitudinal adjustment assembly; 221, second threaded rod; 222, moving block; 223, second motor; 23, track adjustment assembly; 231, cutting guide rail; 232, slider; 233, reciprocating screw rod; 234, electric hydraulic rod; 235, U-shaped mounting frame; 236, high-speed motor ; 3. Positioning mechanism; 31. Support block; 32. Third threaded rod; 33. Low-speed motor; 34. Rectangular sleeve; 35. L-shaped rod; 36. Positioning plate; 4. Hardness detection mechanism; 41. Detection block; 42. Through slot; 43. Support plate; 44. Bidirectional threaded rod; 45. Fifth motor; 46. Moving plate; 47. Roller; 48. Trapezoidal block; 49. Telescopic rod; 410. Spring; 411. Conductive sheet; 5. Feedback mechanism; 51. Resistance rod; 52. Sliding sheet. DETAILED DESCRIPTION

[0019] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0020] Example: Refer to Figures 1 to 5 , a multi-directional cutting device for concrete, comprising: A cutting platform 1, wherein a cutting blade 11 is provided above the cutting platform 1; The adjustment mechanism 2 is used to adjust the cutting disc 11 in multiple directions to meet the cutting requirements in different situations. The adjustment mechanism 2 includes a lateral adjustment component 21, a longitudinal adjustment component 22 and a track adjustment component 23. The lateral adjustment component 21 is used to adjust the cutting disc 11 laterally, the longitudinal adjustment component 22 is used to adjust the cutting disc 11 longitudinally, and the track adjustment component 23 is used to adjust the cutting track of the cutting disc 11; The lateral adjustment assembly 21 includes a U-shaped frame 211 linearly slidably connected to the upper end of the cutting platform 1, and two first threaded rods 212 that rotate synchronously are rotatably connected above the cutting platform 1. The two sides of the U-shaped frame 211 are respectively threadedly connected to the two first threaded rods 212, and the upper end of the cutting platform 1 is fixedly connected to a first motor 213, which is used to drive one of the two first threaded rods 212 to rotate, and the ends of the two first threaded rods 212 away from the first motor 213 are connected through a synchronous wheel group.

[0021] Specifically, the synchronous wheel set includes a synchronous wheel fixedly connected to the two first threaded rods 212, and a synchronous belt is sleeved between the two synchronous wheels. This is an existing mature technology and will not be described in detail here.

[0022] The longitudinal adjustment assembly 22 includes a second threaded rod 221 rotatably connected between the two side walls of the U-shaped frame 211, the lower wall of the U-shaped frame 211 is linearly slidably connected to a moving block 222, the moving block 222 is threadedly connected to the second threaded rod 221, and one end of the U-shaped frame 211 is fixedly connected to a second motor 223 for driving the second threaded rod 221.

[0023] The trajectory adjustment component 23 includes a cutting guide rail 231 rotatably connected to the bottom of the moving block 222, a third motor for driving the cutting guide rail 231 to rotate is provided inside the moving block 222, a slider 232 is linearly slidably connected inside the cutting guide rail 231, a reciprocating screw rod 233 is rotatably connected inside the cutting guide rail 231, the slider 232 is threadedly connected to the reciprocating screw rod 233, a fourth motor for driving the reciprocating screw rod 233 is fixedly connected to one side wall of the cutting guide rail 231, two electric hydraulic rods 234 are fixedly connected to the lower end of the slider 232, a U-shaped mounting frame 235 is fixedly connected to the output ends of the two electric hydraulic rods 234, the cutting disc 11 is rotatably connected between the inner walls on both sides of the U-shaped mounting frame 235, and a high-speed motor 236 for driving the cutting disc 11 to rotate is provided on one side of the U-shaped mounting frame 235.

[0024] In view of the problem that the position and cutting trajectory of the cutting disc 11 cannot be flexibly adjusted in the prior art, and the concrete sample cannot be accurately cut in different directions, the present invention sets an adjustment mechanism 2. Before cutting, the position of the cutting guide rail 231 can be accurately adjusted through the lateral adjustment component 21 and the longitudinal adjustment component 22, and the rotation angle of the cutting guide rail 231 can be adjusted through the third motor, so as to flexibly adjust the position and cutting trajectory of the cutting disc 11 below the cutting guide rail 231. The adjustment process can be roughly divided into the following situations: When cutting the left and right sides of the concrete sample, the first motor 213 can be used to drive the two first threaded rods 212 to rotate synchronously, driving the U-shaped frame 211 to move to the middle position of the first threaded rod 212, and then the second motor 223 drives the second threaded rod 221 to rotate, driving the moving block 222 to move to the specified cutting position, and the third motor drives the cutting guide rail 231 to be vertically arranged, and finally the fourth motor drives the reciprocating screw rod 233 to rotate, so as to drive the cutting disc 11 to move back and forth, and cut one side of the left and right sides of the concrete sample; When cutting the front and rear sides of the concrete sample, the U-shaped frame 211 is driven to move to the designated cutting position, and then the moving block 222 is driven to move to the middle position of the second threaded rod 221. The cutting guide rail 231 is driven by the third motor to be arranged horizontally, and the reciprocating screw rod 233 is driven by the fourth motor to rotate, so that the cutting disc 11 can be driven to move back and forth to cut one side of the front and rear sides of the concrete sample. When it is necessary to cut the concrete sample from a specific angle, the cutting guide rail 231 can be adjusted to other positions through the first motor 213 and the second motor 223, and the cutting trajectory of the cutting guide rail 231 can be adjusted in any direction by driving the third motor, so that the cutting trajectory of the cutting disc 11 meets the requirements, the operation is convenient, the cutting efficiency is improved, and the scope of application is wider.

[0025] The positioning mechanism 3 is provided with two groups and is symmetrically distributed above the cutting platform 1, and is used to clamp and position the concrete sample before cutting; The positioning mechanism 3 includes a support block 31 fixedly connected to the upper end of the cutting platform 1, a third threaded rod 32 is rotatably connected to one side wall of the support block 31, a low-speed motor 33 for driving the third threaded rod 32 is fixedly connected to the other side wall of the support block 31, a rectangular sleeve 34 is threadedly connected to the third threaded rod 32, the rectangular sleeve 34 is linearly slidably connected to the upper end of the cutting platform 1, L-shaped rods 35 are fixedly connected to both side walls of the rectangular sleeve 34, and a positioning plate 36 is fixedly connected to one end of the two L-shaped rods 35 away from the rectangular sleeve 34.

[0026] It is worth mentioning that the present invention, by setting a positioning mechanism 3, can drive the third threaded rod 32 to rotate through the low-speed motor 33 before cutting, thereby driving the two rectangular sleeves 34 to approach each other, and further driving the two positioning plates 36 to approach each other, so as to clamp and position the concrete sample, improve the stability during the cutting process, and thus improve the cutting effect.

[0027] A hardness detection mechanism 4 is used to detect the hardness of the concrete sample to be cut; The hardness detection mechanism 4 includes a detection block 41 fixedly connected to the middle position of one of the positioning plates 36, a through slot 42 is formed on the detection block 41, an extrusion block is slidably connected in the through slot 42, two support plates 43 are fixedly connected to the side wall of the detection block 41, a bidirectional threaded rod 44 is rotatably connected between the two support plates 43, a fifth motor 45 for driving the bidirectional threaded rod 44 is fixedly connected to the upper end of one of the support plates 43, threads with opposite spiral directions are symmetrically formed on the upper and lower sides of the rod body of the bidirectional threaded rod 44, and movable plates are threadedly connected at the threads on the upper and lower sides of the bidirectional threaded rod 44 46, one side of the two movable plates 46 is hinged with a roller 47 through a hinge seat, a trapezoidal block 48 is provided between the two rollers 47, a telescopic rod 49 is fixedly connected to a side wall of the trapezoidal block 48 close to the extrusion block, the telescopic end of the telescopic rod 49 is fixedly connected to the extrusion block, a spring 410 is provided between the extrusion block and the trapezoidal block 48, and the spring 410 is sleeved on the side of the telescopic rod 49, the two rollers 47 are respectively in contact with the upper and lower inclined side walls of the trapezoidal block 48 for rolling, a conductive sheet 411 is provided on a side wall where the extrusion block and the through slot 42 are in contact, and the two conductive sheets 411 are electrically connected to the fifth motor 45.

[0028] Specifically, a limiting plate is fixedly connected to the side wall of the detection block 41, and a limiting block is fixedly connected to the side of the trapezoidal block 48 close to the limiting plate. The limiting block is linearly slidably connected to the side wall of the limiting plate. The limiting plate and the limiting block can limit the trapezoidal block 48, so that the trapezoidal block 48 always makes linear horizontal movement. At the same time, the trapezoidal block 48 will not drive the extrusion block to detach from the through groove 42, thereby ensuring the hardness detection of the concrete sample.

[0029] Specifically, on the basis of the existing use of roller 47, trapezoidal block 48 and extrusion block to detect the hardness of concrete samples, a pressure sensor can be added, and the pressure sensor can be installed on the side of the extrusion block that contacts the concrete sample to measure the pressure value applied to the concrete sample during the extrusion process in real time. When the concrete sample breaks, the reading of the pressure sensor at this time is recorded, and combined with the position information of the roller 47 on the inclined side wall of the trapezoidal block 48, a corresponding relationship between the pressure value and the position of the roller 47 is established, so as to more accurately quantify the hardness of the concrete sample.

[0030] It should be noted that, in the present invention, by setting a hardness detection mechanism 4, after the concrete is positioned, the positioning plate 36 will be in close contact with the side wall of the concrete sample together with the extrusion block. At this time, the bidirectional threaded rod 44 is driven to rotate by the fifth motor 45, further driving the two moving plates 46 to approach each other, so that the two rollers 47 collide and push the trapezoidal block 48 to gradually approach the extrusion block. In this process, the telescopic rod 49 is compressed and shortened, and the spring 410 is compressed synchronously, so that the force applied by the spring 410 to the extrusion block and the side wall of the concrete sample gradually increases. When the concrete sample is crushed under the extrusion action, the spring 410 is compressed. When the concrete sample is cracked, the extrusion block will be embedded in the concrete sample. At this time, the conductive sheet 411 on the extrusion block will be misaligned with the conductive sheet 411 on the inner wall of the through slot 42. When the two conductive sheets 411 are slightly misaligned, the fifth motor 45 is immediately powered off. The position of the roller 47 on the inclined side wall of the trapezoidal block 48 can detect the hardness of the concrete sample. The greater the hardness of the concrete sample, the greater the difficulty of its cracking. The longer the distance that the roller 47 rolls on the inclined side wall of the trapezoidal block 48 is, the easier it is for the staff to detect and record the hardness of the concrete sample, saving the workload of subsequent performance testing.

[0031] The feedback mechanism 5 is used to adjust the cutting speed of the cutting disc 11 in real time according to the hardness of the concrete sample detected.

[0032] The feedback mechanism 5 includes a resistance rod 51 fixedly connected between two support plates 43, and two slides 52 are slidably fitted through the resistance rod 51. The two slides 52 are fixedly connected to the two moving plates 46 respectively. A sliding rheostat is formed between the resistance rod 51 and the two slides 52, and the sliding rheostat is electrically connected to the high-speed motor 236.

[0033] Specifically, the two ends of the resistance rod 51 are respectively connected to the positive and negative poles of the power supply, and the two sliders 52 are connected to the control end of the high-speed motor 236. An external power supply is provided to provide power to the entire circuit. When the slider 52 slides on the resistance rod 51, the resistance value of the sliding rheostat connected to the circuit is changed, thereby affecting the voltage at the control end of the high-speed motor 236.

[0034] Specifically, when the hardness of the concrete sample is tested, the fifth motor 45 drives the bidirectional threaded rod 44 to rotate, and the moving plate 46 drives the slide 52 to slide on the resistance rod 51. Assuming that the power supply voltage is U, the total resistance of the resistance rod 51 is R, and the resistance between the slide 52 and one end of the resistance rod 51 is Rx, according to Ohm's law I=U / (R+Rx), by changing the value of Rx to change the current I in the circuit, the speed of the high-speed motor 236 is proportional to the current I, that is, the larger the current I, the faster the speed of the high-speed motor 236, and the faster the cutting speed of the cutting disc 11; conversely, the smaller the current I, the slower the cutting speed of the cutting disc 11, in this way, the cutting speed of the cutting disc 11 can be adjusted in real time according to the hardness of the concrete sample.

[0035] In view of the problem that the cutting speed of the cutting disc 11 in the prior art is often fixed and cannot be adjusted in real time according to the hardness of the concrete sample, which reduces the cutting effect, the present invention sets a feedback mechanism 5. During the hardness detection process, the two moving plates 46 approach each other, which will drive the two slides 52 to approach each other on the resistance rod 51. Therefore, the power of the high-speed motor 236 can be adjusted by forming a sliding rheostat between the resistance rod 51 and the two slides 52, and the cutting speed of the cutting disc 11 on the concrete sample can be adjusted according to the hardness of the concrete sample: When the hardness of the concrete sample is higher, the two slides 52 are closer to each other, the resistance value of the sliding rheostat is larger, the current of the circuit where the high-speed motor 236 is located is smaller, the power is smaller, and the rotation speed of the cutting disc 11 is smaller. Therefore, when the hardness of the concrete sample is higher, the cutting speed is appropriately reduced to ensure the stability and accuracy of the cutting. When the hardness of the concrete sample is lower, the two slides 52 are closer to each other, the current in the circuit where the high-speed motor 236 is located is larger, the power is greater, and the rotation speed of the cutting disc 11 is greater. When the hardness of the concrete sample is low, the cutting speed is appropriately increased to avoid irregular cutting marks, edge collapse or fragmentation on the concrete surface, thereby ensuring the flatness of the cutting surface and the cutting effect of concrete samples with different hardness.

[0036] The present invention can be explained by the following operation mode: The third threaded rod 32 is driven to rotate by the low-speed motor 33, thereby driving the two rectangular sleeves 34 to approach each other, and further driving the two positioning plates 36 to approach each other, so as to clamp and position the concrete sample; The position of the cutting guide rail 231 is precisely adjusted by the lateral adjustment component 21 and the longitudinal adjustment component 22, and the rotation angle of the cutting guide rail 231 is adjusted by the third motor, so as to flexibly adjust the position and cutting track of the cutting disc 11 below the cutting guide rail 231, so that the cutting track of the cutting disc 11 meets the requirements; After the concrete is positioned, the positioning plate 36 and the extrusion block are simultaneously pressed against the side wall of the concrete sample, and the bidirectional threaded rod 44 is driven to rotate by the fifth motor 45, further driving the two moving plates 46 to approach each other, so that the two rollers 47 collide and push the trapezoidal block 48 to gradually approach the extrusion block. During this process, the force applied by the spring 410 to the extrusion block and the side wall of the concrete sample gradually increases. When the concrete sample is broken under the extrusion, the extrusion block will be embedded in the concrete sample. At this time, the conductive sheet 411 on the extrusion block will be misaligned with the conductive sheet 411 on the inner wall of the through slot 42, and the fifth motor 45 is immediately powered off. The hardness of the concrete sample is judged by the position of the roller 47 on the oblique side wall of the trapezoidal block 48. During the hardness test, the two moving plates 46 approach each other, which will drive the two slides 52 to approach each other on the resistance rod 51. Therefore, the power of the high-speed motor 236 can be adjusted by forming a sliding rheostat between the resistance rod 51 and the two slides 52. According to the hardness of the concrete sample, the cutting speed of the cutting disc 11 on the concrete sample is adjusted; After all the work is completed, the high-speed motor 236 and the fourth motor are turned on. The high-speed motor 236 drives the cutting disc 11 to rotate, and the fourth motor drives the reciprocating screw rod 233 to rotate, driving the cutting disc 11 to move back and forth to cut the concrete sample.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for multi-directional cutting of concrete, characterized in that: include: A cutting platform (1), wherein a cutting disc (11) is provided above the cutting platform (1); an adjustment mechanism (2) for adjusting the cutting disc (11) in multiple directions to meet cutting requirements under different circumstances, wherein the adjustment mechanism (2) comprises a lateral adjustment component (21), a longitudinal adjustment component (22) and a trajectory adjustment component (23), wherein the lateral adjustment component (21) is used to adjust the cutting disc (11) in a lateral direction, the longitudinal adjustment component (22) is used to adjust the cutting disc (11) in a longitudinal direction, and the trajectory adjustment component (23) is used to adjust the cutting trajectory of the cutting disc (11); a positioning mechanism (3) having two groups and symmetrically distributed above the cutting platform (1), and used to clamp and position a concrete sample before cutting; a hardness detection mechanism (4) for detecting the hardness of a concrete sample to be cut; and a feedback mechanism (5) for adjusting the cutting speed of the cutting disc (11) in real time according to the detected hardness of the concrete sample.

2. The multi-directional cutting device for concrete according to claim 1, characterized in that: The lateral adjustment assembly (21) comprises a U-shaped frame (211) linearly slidably connected to the upper end of the cutting platform (1); two first threaded rods (212) are rotatably connected to the upper end of the cutting platform (1) and are synchronously rotated; two sides of the U-shaped frame (211) are respectively threadedly connected to the two first threaded rods (212); a first motor (213) is fixedly connected to the upper end of the cutting platform (1); the first motor (213) is used to drive one of the two first threaded rods (212) to rotate; and the ends of the two first threaded rods (212) away from the first motor (213) are transmission-connected via a synchronous wheel set.

3. The multi-directional cutting device for concrete according to claim 2, characterized in that: The longitudinal adjustment assembly (22) comprises a second threaded rod (221) rotatably connected between two side walls of the U-shaped frame (211); a moving block (222) is linearly slidably connected to the lower wall of the U-shaped frame (211); the moving block (222) is threadedly connected to the second threaded rod (221); and one end of the U-shaped frame (211) is fixedly connected to a second motor (223) for driving the second threaded rod (221).

4. The multi-directional cutting device for concrete according to claim 3, characterized in that: The trajectory adjustment component (23) comprises a cutting rail (231) rotatably connected to the bottom of the moving block (222); a third motor is provided inside the moving block (222) for driving the cutting rail (231) to rotate; a slider (232) is linearly slidably connected inside the cutting rail (231); a reciprocating screw rod (233) is rotatably connected inside the cutting rail (231); the slider (232) is threadedly connected to the reciprocating screw rod (233); a portion of the cutting rail (231) is A fourth motor for driving a reciprocating screw rod (233) is fixedly connected to the side wall; two electric hydraulic rods (234) are fixedly connected to the lower end of the slider (232); the output ends of the two electric hydraulic rods (234) are fixedly connected to a U-shaped mounting frame (235); the cutting disc (11) is rotatably connected between the inner walls on both sides of the U-shaped mounting frame (235); and a high-speed motor (236) for driving the cutting disc (11) to rotate is provided on one side of the U-shaped mounting frame (235).

5. The multi-directional cutting device for concrete according to claim 4, characterized in that: The positioning mechanism (3) comprises a support block (31) fixedly connected to the upper end of the cutting platform (1); a third threaded rod (32) is rotatably connected to one side wall of the support block (31); a low-speed motor (33) for driving the third threaded rod (32) is fixedly connected to the other side wall of the support block (31); a rectangular sleeve (34) is threadedly connected to the third threaded rod (32); the rectangular sleeve (34) is linearly slidably connected to the upper end of the cutting platform (1); L-shaped rods (35) are fixedly connected to both side walls of the rectangular sleeve (34); and positioning plates (36) are fixedly connected to the ends of the two L-shaped rods (35) away from the rectangular sleeve (34).

6. The multi-directional cutting device for concrete according to claim 5, characterized in that: The hardness detection mechanism (4) comprises a detection block (41) fixedly connected to the middle position of one of the positioning plates (36); a through slot (42) is formed through the detection block (41); a pressing block is slidably connected in the through slot (42); two support plates (43) are fixedly connected to the side wall of the detection block (41); a bidirectional threaded rod (44) is rotatably connected between the two support plates (43); a fifth motor (45) for driving the bidirectional threaded rod (44) is fixedly connected to the upper end of one of the support plates (43); threads with opposite spiral directions are symmetrically formed on the upper and lower sides of the rod body of the bidirectional threaded rod (44); and the moving plate (46) is threadedly connected to the threads on the upper and lower sides of the bidirectional threaded rod (44). ), one side of the two movable plates (46) is hinged with a roller (47) through a hinge seat, a trapezoidal block (48) is provided between the two rollers (47), a telescopic rod (49) is fixedly connected to a side wall of the trapezoidal block (48) close to the extrusion block, the telescopic end of the telescopic rod (49) is fixedly connected to the extrusion block, a spring (410) is provided between the extrusion block and the trapezoidal block (48), and the spring (410) is sleeved on the side of the telescopic rod (49), the two rollers (47) respectively contact and roll with the upper and lower inclined side walls of the trapezoidal block (48), a conductive sheet (411) is provided on a side wall where the extrusion block and the through slot (42) are in contact, and the two conductive sheets (411) are electrically connected to the fifth motor (45).

7. The multi-directional cutting device for concrete according to claim 6, characterized in that: The feedback mechanism (5) comprises a resistance rod (51) fixedly connected between two support plates (43), two sliding plates (52) slidingly fitted through the resistance rod (51), the two sliding plates (52) being fixedly connected to the two moving plates (46) respectively, a sliding rheostat being formed between the resistance rod (51) and the two sliding plates (52), and the sliding rheostat being electrically connected to the high-speed motor (236).

8. The multi-directional cutting device for concrete according to claim 6, characterized in that: A limiting plate is fixedly connected to the side wall of the detection block (41), a side of the trapezoidal block (48) close to the limiting plate is fixedly connected to the limiting block, and the limiting block is linearly slidably connected to the side wall of the limiting plate.

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