A device for multi-directional cutting of concrete

Abstract

The present invention belongs to the technical field of concrete sample processing, and in particular relates to a device for multi-directional cutting of concrete, comprising: a cutting platform with a cutting disc provided above the cutting platform; an adjustment mechanism for adjusting the cutting disc in multiple directions to meet cutting requirements in different situations, the adjustment mechanism comprising a lateral adjustment component, a longitudinal adjustment component, and a trajectory adjustment component, the lateral adjustment component being used to adjust the cutting disc laterally, and the longitudinal adjustment component being used to adjust the cutting disc longitudinally. By providing an adjustment mechanism, the present invention can precisely adjust the position of a cutting guide rail before cutting through the lateral adjustment component and the longitudinal adjustment component, and adjust the rotation angle of the cutting guide rail through a third motor, thereby flexibly adjusting the position and cutting trajectory of the cutting disc below the cutting guide rail, so that the cutting trajectory of the cutting disc meets the requirements and has a wider range of applications.

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 the concrete mix and used to test various concrete performance indicators to assess whether the concrete quality meets project requirements. After the concrete specimens are processed, they need to be tested for performance. However, this performance test has strict requirements on the size of the 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 dimensions of concrete specimens cast on site or initially produced are often irregular and cannot be directly used for testing. Therefore, the concrete specimens need to be cut and processed to meet the standard size 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:

[0004] 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. As a result, the concrete specimen needs to be turned after each cut, which is cumbersome and reduces the cutting efficiency. At the same time, it is impossible to complete cutting at a specific angle, and the scope of application is very limited.

[0005] During the cutting process, the hardness of concrete samples is different, and the cutting speed of the cutting disc in existing cutting equipment is often fixed and 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

[0006] The purpose of the present invention is to address the problems raised in the above background technology and 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.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A device for multi-directional cutting of concrete, comprising:

[0009] A cutting platform, wherein a cutting disc is provided above the cutting platform;

[0010] An adjustment mechanism 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 to adjust the cutting disc laterally, the longitudinal adjustment component is used to adjust the cutting disc longitudinally, and the trajectory adjustment component is used to adjust the cutting trajectory of the cutting disc.

[0011] There are two positioning mechanisms, which are symmetrically distributed above the cutting platform and are used to clamp and position the concrete sample before cutting;

[0012] A hardness testing mechanism, used to test the hardness of the concrete sample to be cut;

[0013] 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.

[0014] Preferably, the lateral adjustment assembly includes a U-shaped frame linearly slidably connected to the upper end of the cutting platform, two synchronously rotating first threaded rods 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, the first motor is used to drive one of the two first threaded rods to rotate, and the two first threaded rods are connected by a synchronous wheel set at one end away from the first motor.

[0015] 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.

[0016] 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 two side inner walls 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.

[0017] 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 the two L-shaped rods are fixedly connected to a positioning plate at one end away from the rectangular sleeve.

[0018] Preferably, the hardness detection mechanism includes a detection block fixedly connected to the middle position of one of the positioning plates, a through slot is provided on the detection block, 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, the upper end of one of the support plates is fixedly connected to a fifth motor for driving the bidirectional threaded rod, the upper and lower sides of the bidirectional threaded rod body are symmetrically provided with threads with opposite spiral directions, and the threads on the upper and lower sides of the bidirectional threaded rod are both 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, and 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. The two conductive sheets are electrically connected to the fifth motor.

[0019] Preferably, the feedback mechanism includes a resistance rod fixedly connected between two support plates, and two sliders are slidingly fitted through the resistance rod. The two sliders are fixedly connected to the two movable plates respectively. A sliding rheostat is formed between the resistance rod and the two sliders, and the sliding rheostat is electrically connected to the high-speed motor.

[0020] Preferably, a limit plate is fixedly connected to the side wall of the detection block, a side of the trapezoidal block close to the limit plate is fixedly connected to the limit block, and the limit block is linearly slidably connected to the side wall of the limit plate.

[0021] Compared with existing technologies, the advantages of this multi-directional concrete cutting equipment are:

[0022] The present invention provides an adjustment mechanism. Before cutting, the position of the cutting guide rail can be accurately adjusted by the lateral adjustment component and the longitudinal adjustment component, and the rotation angle of the cutting guide rail can be adjusted by the 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.

[0023] 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, clamping and positioning the concrete sample, improving the stability during the cutting process, and thus improving the cutting effect.

[0024] The present invention provides a hardness detection mechanism. After the concrete is positioned, the bidirectional threaded rod is driven to rotate by a fifth motor, so that the two rollers collide and push the trapezoidal block gradually close to the extrusion block. When the concrete sample is broken under the extrusion action, 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.

[0025] The present invention sets a feedback mechanism. During the hardness testing process, the two movable plates approach each other, which drives the two sliders to approach each other on the resistance rod. Therefore, the power of the high-speed motor can be adjusted by forming a sliding rheostat 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

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 It is a partial structural diagram of the positioning mechanism in the present invention;

[0029] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0030] Figure 5 It is a schematic diagram of the cross-sectional structure of the detection block in the present invention.

[0031] Figure: 1. Cutting platform; 11. Cutting disc; 2. Adjustment mechanism; 21. Horizontal 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; 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. Slider. DETAILED DESCRIPTION

[0032] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0033] Example: Refer to Figures 1 to 5 , a multi-directional concrete cutting device, comprising:

[0034] A cutting platform 1, with a cutting disc 11 provided above the cutting platform 1;

[0035] The adjustment mechanism 2 is used to adjust the cutting disc 11 in multiple directions to meet cutting requirements in different situations. The adjustment mechanism 2 includes a lateral adjustment component 21, a longitudinal adjustment component 22, and a trajectory 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 trajectory adjustment component 23 is used to adjust the cutting trajectory of the cutting disc 11.

[0036] 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 synchronously rotating first threaded rods 212 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. The upper end of the cutting platform 1 is fixedly connected to a first motor 213, and the first motor 213 is used to drive one of the two first threaded rods 212 to rotate. The ends of the two first threaded rods 212 away from the first motor 213 are connected through a synchronous wheel set.

[0037] Specifically, the synchronous wheel set includes a synchronous wheel fixedly connected to the two first threaded rods 212, and a synchronous belt is provided between the two synchronous wheels. This is an existing mature technology and will not be described in detail here.

[0038] 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.

[0039] The trajectory adjustment assembly 23 includes a cutting guide rail 231 rotatably connected to the bottom of the moving block 222, and a third motor is provided inside the moving block 222 for driving the cutting guide rail 231 to rotate, 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, and the slider 232 is threadedly connected to the reciprocating screw rod 233, and a fourth motor for driving the reciprocating screw rod 233 is fixedly connected to one side wall of the cutting guide rail 231, and two electric hydraulic rods 234 are fixedly connected to the lower end of the slider 232, and the output ends of the two electric hydraulic rods 234 are fixedly connected to a U-shaped mounting frame 235, and 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 is provided on one side of the U-shaped mounting frame 235 for driving the cutting disc 11 to rotate.

[0040] In order to solve the problem that the position and cutting trajectory of the cutting disc 11 cannot be flexibly adjusted in the prior art, and the concrete specimen cannot be accurately cut in different directions, the present invention provides an adjustment mechanism 2. Before cutting, the position of the cutting guide rail 231 can be accurately adjusted through the horizontal adjustment component 21 and the longitudinal adjustment component 22, and the rotation angle of the cutting guide rail 231 can be adjusted by 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:

[0041] 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 rods 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 arranged vertically. Finally, the fourth motor drives the reciprocating screw rod 233 to rotate, which can drive the cutting disc 11 to move back and forth, and cut one side of the left and right sides of the concrete sample;

[0042] 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, thereby driving the cutting disc 11 to move back and forth, and cutting one side of the front and rear sides of the concrete sample;

[0043] 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.

[0044] 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;

[0045] The positioning mechanism 3 includes a support block 31 fixedly connected to the upper end of the cutting platform 1, and 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, and 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 the end of the two L-shaped rods 35 away from the rectangular sleeve 34.

[0046] It is worth mentioning that the present invention sets a positioning mechanism 3. Before cutting, the low-speed motor 33 can drive the third threaded rod 32 to rotate, thereby driving the two rectangular sleeves 34 to approach each other, and further driving the two positioning plates 36 to approach each other, clamping and positioning the concrete sample, improving the stability during the cutting process, and thus improving the cutting effect.

[0047] A hardness testing mechanism 4 is used to test the hardness of the concrete sample to be cut;

[0048] 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 provided 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, the upper end of one of the support plates 43 is fixedly connected to a fifth motor 45 for driving the bidirectional threaded rod 44, the upper and lower sides of the bidirectional threaded rod 44 are symmetrically provided with threads with opposite spiral directions, and the threads on the upper and lower sides of the bidirectional threaded rod 44 are both threadedly connected to a movable plate 46. ​​One side of the two movable plates 46 is hinged with a roller 47 through a hinge seat, and a trapezoidal block 48 is provided between the two rollers 47. A telescopic rod 49 is fixedly connected to the side wall of the trapezoidal block 48 close to the extrusion block, and 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 oblique side walls of the trapezoidal block 48, and a conductive sheet 411 is provided on the side wall where the extrusion block and the through slot 42 are in contact. The two conductive sheets 411 are electrically connected to the fifth motor 45.

[0049] 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 moves linearly horizontally. 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.

[0050] 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. The pressure sensor is 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. Combined with the position information of the roller 47 on the oblique 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.

[0051] It should be noted that, in the present invention, by providing a hardness detection mechanism 4, after the concrete is positioned, the positioning plate 36 and the extrusion block will be in close contact with the side wall of the concrete sample at the same time. At this time, the bidirectional threaded rod 44 is driven to rotate by the fifth motor 45, further driving the two movable plates 46 to approach each other, so that the two rollers 47 collide and push the trapezoidal block 48 gradually close to 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 oblique side wall of the trapezoidal block 48 can detect the hardness of the concrete sample. The harder the concrete sample is, the more difficult it is to break. The longer the distance that the roller 47 rolls on the oblique side wall of the trapezoidal block 48 is, which makes it easier for staff to detect and record the hardness of the concrete sample and saves the workload of subsequent performance testing.

[0052] 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.

[0053] The feedback mechanism 5 includes a resistance rod 51 fixedly connected between two support plates 43, and two sliders 52 are slidingly fitted through the resistance rod 51. The two sliders 52 are respectively fixedly connected to the two movable plates 46. A sliding rheostat is formed between the resistance rod 51 and the two sliders 52, and the sliding rheostat is electrically connected to the high-speed motor 236.

[0054] 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.

[0055] Specifically, when testing the hardness of a concrete sample, the fifth motor 45 drives the bidirectional threaded rod 44 to rotate, and the movable plate 46 drives the slider 52 to slide on the resistance rod 51. Assuming the power supply voltage is U, the total resistance of the resistance rod 51 is R, and the resistance between the slider 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, the current I in the circuit is changed. The speed of the high-speed motor 236 is proportional to the current I. That is, the greater 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.

[0056] In view of the problem in the prior art that the cutting speed of the cutting disc 11 is often fixed and cannot be adjusted in real time according to the hardness of the concrete sample, thereby reducing the cutting effect, the present invention provides a feedback mechanism 5. During the hardness testing process, the two movable plates 46 approach each other, which will drive the two sliders 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 sliders 52. The cutting speed of the cutting disc 11 on the concrete sample can be adjusted according to the hardness of the concrete sample:

[0057] When the hardness of the concrete sample is higher, the two sliders 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 smoothness and accuracy of the cutting.

[0058] When the hardness of the concrete sample is lower, the closer the two slides 52 are to each other, the greater the current in the circuit where the high-speed motor 236 is located, the greater the power, and the faster the rotation speed of the cutting disc 11. 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.

[0059] The present invention can be explained through the following operation mode:

[0060] The third threaded rod 32 is driven to rotate by the low-speed motor 33, thereby driving the two rectangular sleeves 34 to move closer to each other, and further driving the two positioning plates 36 to move closer to each other, thereby clamping and positioning the concrete sample;

[0061] The position of the cutting guide rail 231 is precisely adjusted by the transverse 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, thereby flexibly adjusting the position and cutting trajectory of the cutting disc 11 below the cutting guide rail 231, so that the cutting trajectory of the cutting disc 11 meets the requirements;

[0062] After the concrete is positioned, the positioning plate 36 and the extrusion block are simultaneously pressed against the side wall of the concrete sample. The bidirectional threaded rod 44 is driven to rotate by the fifth motor 45, further driving the two movable plates 46 to approach each other, so that the two rollers 47 collide and push the trapezoidal block 48 gradually close to 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 action of 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 groove 42. 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.

[0063] During the hardness test, the two movable plates 46 approach each other, driving the two sliders 52 on the resistance rod 51 to approach each other. Thus, the power of the high-speed motor 236 can be adjusted by forming a sliding rheostat between the resistance rod 51 and the two sliders 52. The cutting speed of the cutting disc 11 on the concrete sample is adjusted according to the hardness of the concrete sample.

[0064] 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.

[0065] 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-directional cutting device for 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) is used to adjust the cutting disc (11) in multiple directions to meet cutting requirements under different circumstances, the adjustment mechanism (2) comprising a transverse adjustment component (21), a longitudinal adjustment component (22) and a trajectory adjustment component (23), the transverse adjustment component (21) being used to adjust the cutting disc (11) transversely, the longitudinal adjustment component (22) being used to adjust the cutting disc (11) longitudinally, and the trajectory adjustment component (23) being used to adjust the cutting trajectory of the cutting disc (11); The longitudinal adjustment assembly (22) comprises a second threaded rod (221) rotatably connected between two side walls of the U-shaped frame (211), and a moving block (222) is linearly slidably connected to the lower wall of the U-shaped frame (211); 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), two electric hydraulic rods (234) are fixedly connected to the lower end of the slider (232), and 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 of 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); A positioning mechanism (3) is provided in two groups and 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); A hardness detection mechanism (4) is used to detect the hardness of a 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 provided 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). The upper end of one of the support plates (43) is fixedly connected to a fifth motor (45) for driving the bidirectional threaded rod (44). The upper and lower sides of the rod body of the bidirectional threaded rod (44) are symmetrically provided with threads with opposite spiral directions. The screw threads on the upper and lower sides of the bidirectional threaded rod (44) are fixedly connected to the side wall of the detection block (41). The grooves are all threadedly connected to a movable plate (46), one side of the two movable plates (46) is hinged to 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 oblique 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); A 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. The feedback mechanism (5) includes a resistance rod (51) fixedly connected between two support plates (43). Two slides (52) are slidingly 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).

2. The multi-directional concrete cutting device 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) that rotate synchronously are rotatably connected above the cutting platform (1); 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 connected through a synchronous wheel set.

3. The multi-directional concrete cutting device according to claim 2, characterized in that: 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 concrete cutting device according to claim 3, characterized in that: A reciprocating screw rod (233) is rotatably connected in the cutting guide rail (231), the slider (232) is threadedly connected to the reciprocating screw rod (233), and a fourth motor for driving the reciprocating screw rod (233) is fixedly connected to a side wall of the cutting guide rail (231).

5. The multi-directional concrete cutting device according to claim 1, characterized in that: A limiting plate is fixedly connected to the side wall of the detection block (41), and 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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