Controllable low-strength material sample sampling device

Abstract

The invention discloses a controllable low-strength material sample sampling device, and relates to the technical field of detection, the controllable low-strength material sample sampling device comprises an equipment cabinet, integrated control equipment and a trapezoidal storage hopper, a material conveying device, a vertical cutting device, a transverse cutting device, a liquid nitrogen spot spraying device for quickly freezing a sample and a waste bin are arranged on a working table at the top of the equipment cabinet. Continuous operation can be achieved, manual frequent posture adjustment and positioning are not needed, multiple target test blocks can be machined at a time, the batch machining time is further shortened, time and labor are saved, efficiency is high, traditional manual cutting, waste treatment and liquid nitrogen freezing are converted into a series of linkage automatic operation, the size and shape of a sample material are cut evenly, and the machining efficiency is improved. The quick-freezing temperature uniformity is good, the quick-freezing effect is stable, and manual errors caused by non-standard operation during manual operation are reduced.

Description

Technical Field

[0001] This invention relates to the field of testing technology, specifically to a controllable low-strength material sample collection device. Background Technology

[0002] Sampling of low-strength material specimens is typically done by hand sawing. A cutting line is drawn on the material surface with a marker, ensuring the line is clear and straight. The material is fixed on a workbench or vise. Holding the hacksaw, the blade is aligned with the cutting line, and gentle pressure is applied to initiate sawing, keeping the blade perpendicular to the material surface. The saw is pushed and pulled at a uniform speed with moderate force, avoiding excessive force that could deform the material or cause the blade to shift, until the cutting is complete. Once a sufficient number of specimens have been cut, the material is placed in liquid nitrogen for rapid freezing, where the low temperature temporarily hardens the material and increases its brittleness.

[0003] Currently, most sample cutting and freezing operations for measured materials are performed manually. When clamping or fixing the sample, it is difficult to control the clamping force, which can easily lead to sample deformation and damage, affecting cutting accuracy. When cutting the sample, manual operation can easily lead to uneven stress on the sample, resulting in local cracking and irregularity. Furthermore, the uneven cutting caused by manual operation and the different cutting locations each time have a significant impact on the experimental results. In the laboratory, material samples are cut into pieces one by one with a cutting knife, and then cut into small cube test blocks, which are then manually packaged and placed in a liquid nitrogen tank for rapid freezing. However, this method results in different cutting locations each time, large errors, and is time-consuming and labor-intensive, with results greatly affected by subjective factors.

[0004] To address this issue, the present invention provides a controllable low-strength material sample taking device that automates and integrates cutting, feeding, waste disposal, and liquid nitrogen freezing processes to solve the aforementioned problems. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a controllable low-strength material sample sampling device, comprising an equipment cabinet, an integrated control device, a trapezoidal storage hopper, a material conveying device, a vertical cutting device, a horizontal cutting device, and a liquid nitrogen spraying device. The integrated control device is installed inside the equipment cabinet, and a worktable is installed on the top of the equipment cabinet. The worktable is equipped with a material conveying device for moving the conveyor plate, a vertical cutting device and a horizontal cutting device for cutting the sample, a liquid nitrogen spraying device for rapidly freezing the sample, and a waste bin for collecting waste. The trapezoidal storage hopper is rotatably installed on the conveyor plate, and a bucket-turning motor for adjusting the tilt angle of the trapezoidal storage hopper is installed on the conveyor plate. A test block fixing groove and a top material motor are fixedly installed inside the trapezoidal storage hopper.

[0006] Preferably, the material conveying device includes a square bracket fixed on the workbench, a drive motor and a slide bar fixedly mounted on the square bracket, a conveyor plate slidably mounted on the slide bar, a rotating shaft rotatably mounted on the square bracket, a conveyor belt driving between the output end of the drive motor and the rotating shaft, a belt buckle fixedly mounted on the conveyor belt, and the belt buckle being fixedly connected to the conveyor plate.

[0007] Preferably, the vertical cutting device includes a vertical cutting frame fixed on the worktable. A vertical cutting motor, a guide column, a fixing plate, and a force-bearing plate are fixedly mounted on the vertical cutting frame. A motor bottom plate is fixedly mounted on the outer side of the output end of the vertical cutting motor. The motor bottom plate slides with the guide column. A shock-absorbing spring is fixedly mounted on the top of the fixing plate and is sleeved on the outer side of the guide column. The output end of the vertical cutting motor passes through a through hole in the fixing plate and is fixedly mounted on the fixing plate. A vertical chip collection container is fixedly mounted on the bottom of the vertical chip collection container. A vertical diamond cutter head is fixedly mounted on the bottom of the vertical chip collection container.

[0008] Preferably, the transverse cutting device includes a transverse cutting frame fixed on the worktable, a transverse cutting motor fixedly mounted on the transverse cutting frame, a transverse chip collection container fixedly connected to the output end of the transverse cutting motor via a connecting plate, a transverse diamond cutter head fixedly mounted on the side of the transverse chip collection container near the force plate, a pusher motor fixedly mounted on the connecting plate at the output end of the transverse cutting motor, and a push rod extending into the transverse chip collection container connected to the output end of the pusher motor.

[0009] Preferably, the liquid nitrogen spraying device includes a liquid nitrogen spraying frame fixed on the workbench, a liquid nitrogen spraying device lifting motor fixedly installed on the liquid nitrogen spraying frame, a trapezoidal cover fixedly installed at the output end of the liquid nitrogen spraying device lifting motor, a liquid nitrogen sprayer extending to the inside of the trapezoidal cover installed at the top of the trapezoidal cover, the liquid nitrogen sprayer being connected to the liquid nitrogen tank through a liquid nitrogen delivery pipe, and a liquid nitrogen tank opening being provided on the liquid nitrogen tank.

[0010] Preferably, a bucket-turning motor and a bearing seat are fixedly installed on the conveyor plate, a bucket-turning shaft that is rotatably connected to the bearing seat is fixedly installed on one side of the bottom of the trapezoidal storage hopper, the other side of the bottom of the trapezoidal storage hopper abuts against the output end of the bucket-turning motor, and an elastic element is provided between the bottom of the trapezoidal storage hopper and the conveyor plate.

[0011] Preferably, the equipment cabinet is equipped with an inner cabinet base, and the integrated control equipment includes a microcontroller, hollow wiring conduit and relays mounted on the inner cabinet base. The equipment cabinet is also equipped with slotted ventilation openings, double-opening door, start button, pause button, reset button, power cord and power switch.

[0012] Preferably, the bottom of the equipment cabinet is also equipped with a leveling device, which includes threaded support feet and a spirit level. A threaded support foot is provided at each of the four corners of the bottom of the equipment cabinet.

[0013] Preferably, multiple transverse chip collection containers are fixedly connected to the connecting plate at the output end of the transverse cutting motor, and multiple push rods are connected to the output end of the pusher motor. The number of push rods corresponds to the number of transverse chip collection containers, and the push rods extend into the interior of the corresponding transverse chip collection containers.

[0014] Preferably, the waste bin is fixed to the worktable by positioning pins.

[0015] The present invention has the following beneficial effects: This invention enables continuous operation without the need for frequent manual adjustments to posture and positioning. It can process multiple target test blocks at once, further shortening batch processing time, saving time and effort, and increasing efficiency.

[0016] This invention transforms the traditional manual cutting, waste processing, and liquid nitrogen freezing into a series of linked automated operations, resulting in uniform cutting of sample materials in size and shape, good uniformity of freezing temperature, and stable freezing effect. It reduces human error caused by non-standard operation during manual operation, making the results more accurate, reasonable, and consistent with actual conditions. This invention improves the liquid nitrogen freezing step after sampling into an automated freezing process, which can perform point-spray liquid nitrogen cooling and freezing, making it convenient and fast. The timing of sampling and cooling is uniform, the sample consistency is strong, the results are more accurate, manual operation is reduced, operation time is shortened, and work efficiency is improved. The equipment cabinet in this invention is equipped with a microcontroller and relays. Various control motors and liquid nitrogen sprayers are connected through built-in hollow conduits, thereby controlling the cutting of materials, operation of equipment, etc., which greatly improves the continuity of experimental operations and work efficiency. The material conveying device designed in this invention can drive the conveyor belt to rotate between the rotating shaft and the drive motor by rotating the drive motor. At this time, the conveyor plate moves horizontally along the direction of the slide bar under the fixation of the belt buckle, so that the trapezoidal storage hopper can move back and forth horizontally to convey materials. This invention features a test block fixing groove inside a trapezoidal storage hopper, which fixes the test block and ensures that the test block is evenly stressed during cutting, preventing it from breaking. A top-loading motor is installed inside the trapezoidal storage hopper below the center, which can push the cut test block out after vertical cutting. When the trapezoidal storage hopper is conveyed to the far right of the device, a bucket-tilting motor can tilt the trapezoidal storage hopper, dumping the cut waste into the far right waste bin, thus achieving automated material processing. The equipment cabinet of this invention is equipped with threaded support feet at the bottom, which can be used with a spirit level to adjust the level and height of the equipment to ensure that the equipment remains stable during operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the square bracket, slide bar, and conveyor plate in this invention; Figure 3 This is a schematic diagram of the structure of the vertical cutting frame, vertical chip collection container, and vertical diamond cutter head in this invention; Figure 4 This is a schematic diagram of the transverse cutting frame, transverse chip collection container, and transverse diamond cutter head in this invention; Figure 5 This is a schematic diagram of the liquid nitrogen spraying frame, trapezoidal cover, and liquid nitrogen sprayer in this invention; Figure 6 This is a schematic diagram of the structure of the bucket motor, the test block fixing groove, and the top material motor in this invention; Figure 7 This is a schematic diagram of the equipment cabinet, threaded support feet, and spirit level in this invention; Figure 8 This is a schematic diagram of the microcontroller and relay in this invention; Figure 9 This is a schematic diagram of the vertical diamond cutter head and vertical chip collection container in this invention; Figure 10 This is a schematic diagram of the transverse diamond cutting head and transverse chip collection container in this invention.

[0018] In the diagram: 1. Equipment cabinet; 2. Square bracket; 3. Trapezoidal storage hopper; 4. Vertical cutting frame; 5. Horizontal cutting frame; 6. Liquid nitrogen spot spraying frame; 11. Threaded support foot; 12. Double-opening door; 121. Spirit level; 13. Start button; 14. Pause button; 15. Reset button; 16. Power cord; 161. Three-prong plug; 17. Power switch; 18. Workbench; 19. Cabinet inner base; 191. Relay; 192. Hollow conduit; 193. Microcontroller; 21. Drive motor; 22. Slide bar; 23. Conveyor belt; 24. Conveyor plate; 25. Belt buckle; 26. Rotary shaft; 31. Bucket tilting motor. 32, Test block fixing groove; 33, Tipping bucket shaft; 34, Bearing seat; 35, Top material motor; 36, Waste bin; 361, Positioning pin; 41, Vertical cutting motor; 42, Guide column; 43, Shock-absorbing spring; 44, Fixing plate; 45, Force plate; 46, Vertical diamond cutter head; 47, Vertical chip collection container; 48, Motor bottom plate; 51, Horizontal cutting motor; 52, Pushing motor; 53, Push rod; 54, Horizontal diamond cutter head; 55, Horizontal chip collection container; 61, Liquid nitrogen spot spray device lifting motor; 62, Trapezoidal cover; 63, Liquid nitrogen tank; 631, Liquid nitrogen tank mouth; 632, Liquid nitrogen delivery pipe; 64, Liquid nitrogen spot sprayer. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0021] Embodiments of the present invention like Figures 1 to 10 As shown, a controllable low-strength material sample collection device includes an equipment cabinet 1, an integrated control device, a trapezoidal storage hopper 3, a material conveying device, a vertical cutting device, a horizontal cutting device, and a liquid nitrogen spraying device. The integrated control device is installed inside the equipment cabinet 1. A worktable 18 is installed on the top of the equipment cabinet 1. The worktable 18 is equipped with a material conveying device for moving a conveyor plate 24, a vertical cutting device and a horizontal cutting device for cutting the sample, a liquid nitrogen spraying device for rapidly freezing the sample, and a waste bin 36 for collecting waste material. The waste bin 36 is fixed to the upper right side of the worktable 18 by a positioning pin 361 (i.e.,...). Figure 1 (On the right side of the middle), the positioning pin 361 can prevent the waste bin 36 from sliding. A trapezoidal storage hopper 3 is rotatably installed on the conveyor plate 24, and a bucket motor 31 for adjusting the tilt angle of the trapezoidal storage hopper 3 is installed on the conveyor plate 24.

[0022] like Figure 1 , Figure 2 and Figure 6 As shown, the material conveying device includes a square bracket 2 fixed on the workbench 18. A drive motor 21 and a slide bar 22 are fixedly mounted on the square bracket 2. A conveyor plate 24 is slidably mounted on the slide bar 22. A rotating shaft 26 is rotatably mounted on the square bracket 2. A conveyor belt 23 is driven between the output end of the drive motor 21 and the rotating shaft 26. A belt buckle 25 is fixedly mounted on the conveyor belt 23 and is fixedly connected to the conveyor plate 24. The material conveying device enables precise material conveying during loading, unloading, cutting, and quick-freezing processes.

[0023] A bucket-turning motor 31 and a bearing seat 34 are fixedly mounted on the conveyor plate 24. A bucket-turning shaft 33, rotatably connected to the bearing seat 34, is fixedly mounted on one side of the bottom of the trapezoidal storage hopper 3. The other side of the bottom of the trapezoidal storage hopper 3 abuts against the output end of the bucket-turning motor 31. An elastic element is provided between the bottom of the trapezoidal storage hopper 3 and the conveyor plate 24. A test block fixing groove 32 and a top-loading motor 35 are fixedly mounted on the inner side of the trapezoidal storage hopper 3. The test block fixing groove 32 fixes the test block and ensures that the test block is evenly stressed during cutting, preventing the test block from breaking. After vertical cutting, the top-loading motor 35 can cooperate with the vertical cutting device to push out the cut target test block. The drive motor 21, bucket-turning motor 31, top-loading motor 35, and conveyor belt 23 are all existing technologies and will not be described in detail here.

[0024] like Figure 1 , Figure 3 and Figure 9 As shown, the vertical cutting device includes a vertical cutting frame 4 fixed on a worktable 18. A vertical cutting motor 41, a guide column 42, a fixing plate 44, and a force-bearing plate 45 are fixedly mounted on the vertical cutting frame 4. A motor bottom plate 48 is fixedly mounted on the outer side of the output end of the vertical cutting motor 41, and the motor bottom plate 48 slides with the guide column 42. A shock-absorbing spring 43 is fixedly mounted on the top of the fixing plate 44 and sleeved on the outer side of the guide column 42. The output end of the vertical cutting motor 41 passes through a through hole in the fixing plate 44 and is fixedly mounted on a vertical chip collection container 47. A vertical diamond cutter head 46 is fixedly mounted on the bottom of the vertical chip collection container 47. The vertical cutting motor 41 is prior art and will not be described in detail here.

[0025] like Figure 1 , Figure 4 and Figure 10 As shown, the transverse cutting device includes a transverse cutting frame 5 fixed on the worktable 18. A transverse cutting motor 51 is fixedly mounted on the transverse cutting frame 5. The output end of the transverse cutting motor 51 is fixedly connected to three transverse chip collection containers 55 via a connecting plate. A transverse diamond cutter head 54 is fixedly mounted on the side of the transverse chip collection container 55 near the force plate 45. A pusher motor 52 is fixedly mounted on the connecting plate at the output end of the transverse cutting motor 51. The output end of the pusher motor 52 is connected to three push rods 53, which extend into the interior of the three transverse chip collection containers 55. The vertical diamond cutter head 46 and the transverse diamond cutter head 54 are threaded connection components, which can be freely switched according to different cutting sizes. Both the vertical diamond cutter head 46 and the transverse diamond cutter head 54 have an open design at one end, which is convenient for cleaning and maintenance. The transverse cutting motor 51 and the pusher motor 52 are existing technologies and will not be described in detail here.

[0026] like Figure 1 and Figure 5As shown, the liquid nitrogen spraying device includes a liquid nitrogen spraying frame 6 fixed on the workbench 18. A liquid nitrogen spraying device lifting motor 61 is fixedly mounted on the liquid nitrogen spraying frame 6. A trapezoidal cover 62 is fixedly mounted on the output end of the liquid nitrogen spraying device lifting motor 61. A liquid nitrogen sprayer 64 extending into the inside of the trapezoidal cover 62 is mounted on the top of the trapezoidal cover 62. The liquid nitrogen sprayer 64 is connected to a liquid nitrogen tank 63 through a liquid nitrogen delivery pipe 632. The liquid nitrogen tank 63 is provided with a liquid nitrogen tank opening 631 for filling with liquid nitrogen. In this embodiment, an upper mold base plate is provided between the upper ends of the vertical cutting frame 4, the horizontal cutting frame 5, and the liquid nitrogen spraying frame 6. The liquid nitrogen tank 63 is mounted on the upper mold base plate. The liquid nitrogen sprayer 64 is similar to the liquid nitrogen spray gun in the prior art. In this embodiment, it is controlled by a microcontroller 193 and a relay 191 to achieve intermittent spraying. The liquid nitrogen sprayer 64, the liquid nitrogen spray device lifting motor 61, the liquid nitrogen delivery pipe 632, and the liquid nitrogen tank 63 are prior art and will not be described in detail here.

[0027] like Figure 1 , Figure 7 and Figure 8 As shown, the equipment cabinet 1 has an inner cabinet base 19. The integrated control device includes a microcontroller 193 (in this embodiment, an STM32 microcontroller is used for control), a hollow wiring conduit 192, and multiple relays 191, all mounted on the inner cabinet base 19. The integrated control device is used to control the drive motor 21, the top material motor 35, the bucket tilting motor 31, the vertical cutting motor 41, the horizontal cutting motor 51, the pusher motor 52, the liquid nitrogen spray device lifting motor 61, the liquid nitrogen sprayer 64, and to control the overall electrical system to achieve high-precision control. The integrated control device is a known existing technology and will not be described in detail here. The equipment cabinet 1 also has a slot-type communication device. The system includes an air vent, a double-leaf door 12, a start button 13, a pause button 14, a reset button 15, a power cord 16, and a power switch 17. The slotted air vent better accommodates the heat dissipation and ventilation of internal components, preventing the internal temperature from rising due to prolonged operation. The power switch 17 allows for one-button power switching. The power cord 16 connects to an external power source via a three-prong plug 161, providing a stable power supply while adding grounding protection. The double-leaf door 12 facilitates future maintenance and inspection of internal equipment. The start button 13, pause button 14, and reset button 15 allow for manual intervention during operation, increasing safety. This system achieves integrated manual and automatic control with both manual and automatic modes.

[0028] The bottom of the equipment cabinet 1 is also equipped with a leveling device, which includes threaded support feet 11 and a spirit level 121. A threaded support foot 11 is located at each of the four corners of the bottom of the equipment cabinet 1. The height and angle of the equipment cabinet 1 are adjusted by the four threaded support feet 11, and the level is adjusted in conjunction with the spirit level 121 to ensure the equipment remains stable during operation and to prevent factors such as uneven placement from affecting the accuracy and performance of the equipment. The threaded support feet 11 are existing technology and can be composed of a threaded body with external threads, a threaded mating part with internal threads, and a support base. The length of the threaded support foot 11 is adjusted by the threaded engagement between the threaded body and the threaded mating part. The spirit level 121, the cabinet inner base 19, the microcontroller 193, the hollow wiring conduit 192, the relay 191, the start button 13, the pause button 14, the reset button 15, and the power switch 17 are all existing technologies and will not be described in detail here.

[0029] The working principle of all the content in the above embodiments is as follows: Before operation, adjust the level of the equipment cabinet 1 using the leveling device to ensure stability during operation. Then, connect the power supply to the equipment via the three-prong plug 161 and turn on the power switch 17. After the equipment starts, all devices reset. Place the material to be cut (its shape and size correspond to the test block fixing slot 32) after molding into the trapezoidal storage hopper 3, ensuring it fits into the test block fixing slot 32. Press the start button 13 on the front of the cabinet. At this time, the microcontroller 193 and relay 191 control the drive motor 21 to rotate, causing the conveyor belt 23 to move the belt buckle 25 and the conveyor plate 24. When the trapezoidal storage hopper 3 on the conveyor plate 24 is conveyed to the area directly below the vertical diamond cutter head 46, control the vertical cutting motor 41 to rotate forward, causing the vertical diamond cutter head 46 to cut vertically downwards along the direction of the guide post 42. The material test block is placed inside the vertical chip collection container 47, and the bottom plate 48 of the motor presses the upper end of the shock-absorbing spring 43 during the cutting process. The shock-absorbing spring 43 absorbs and buffers the vibration and impact brought by the cutting process, which has a good protective effect. After cutting, the vertical cutting motor 41 is reversed and the top material motor 35 is rotated forward at the same time, which drives the vertical diamond cutter head 46 and the vertical chip collection container 47 to rise. At this time, the output end of the top material motor 35 in the trapezoidal storage hopper 3 and the vertical chip collection container 47 rise slowly and synchronously, pushing out the cut rectangular test block. The pushed-out rectangular test block is stored in the vertical chip collection container 47, and the side of the rectangular test block away from the horizontal diamond cutter head 54 is in contact with the force plate 45. Next, the transverse cutting device operates, controlling the transverse cutting motor 51 to rotate forward, and the transverse diamond cutter head 54 moves laterally to the side close to the vertical chip collection container 47 and inserts into the vertical chip collection container 47 to cut the cuboid test block into three uniform cubic test blocks (target test blocks) and store them in their respective transverse chip collection containers 55. Then, the transverse cutting motor 51 is controlled to rotate in reverse, and the cut target test blocks are moved together by the transverse chip collection containers 55.

[0030] After the transverse cutting is completed, the top material motor 35 is reset, causing the remaining material inside the vertical chip collection container 47 to fall into the trapezoidal storage hopper 3. Immediately afterwards, the material conveying device operates, moving the trapezoidal storage hopper 3 to the far right of the equipment (i.e., the side closest to the waste bin 36). The bucket tilting motor 31 is then controlled to rotate forward, causing its output end to move upward, thus lifting the end of the trapezoidal storage hopper 3 away from the tipping shaft 33 and stretching the elastic element between the trapezoidal storage hopper 3 and the conveyor plate 24. This causes the trapezoidal storage hopper 3 to rotate around the tipping shaft 33, allowing the cut waste to fall into the waste bin 36. Then, the bucket tilting motor 31 is controlled to rotate in reverse, at which point the elastic element resets, returning the trapezoidal storage hopper 3 to a horizontal position. The material conveying device then transports the trapezoidal storage hopper 3 directly below the transverse cutting device. Immediately afterwards, the pusher motor 52 operates, pushing the target test block into the trapezoidal storage hopper 3 for temporary storage via the push rod 53 located in the transverse chip collection container 55. It should be noted that the target test block is a test block material that has been cured for several days after being poured into the mold. It has a certain hardness. The height of the transverse cutting in this equipment is controlled within a certain range (the distance between the bottom transverse diamond cutter head 54 and the top of the trapezoidal storage hopper 3 is 15-20cm). The inner wall of the trapezoidal storage hopper 3 is inclined, which has a certain shock absorption and buffering effect. When the push rod 53 pushes the target test block into the trapezoidal storage hopper 3, it will not cause the target test block to deform. Furthermore, slight local deformation of the target test block will not affect the test.

[0031] The trapezoidal storage hopper 3 is then conveyed to the area directly below the liquid nitrogen spraying device via a material conveying device. The lifting motor 61 of the liquid nitrogen spraying device rotates, causing the trapezoidal cover 62 and the liquid nitrogen sprayer 64 to move downwards, so that the trapezoidal cover 62 fits snugly against the upper end of the trapezoidal storage hopper 3. At this time, the microcontroller 193, through its timer and relay 191, causes the liquid nitrogen sprayer 64 to begin spraying, once every 3 seconds, with each spray lasting 10 seconds. This rapidly cools and freezes the target sample block. After spraying, the lifting motor 61 of the liquid nitrogen spraying device raises the trapezoidal cover 62, and then the material conveying device conveys the trapezoidal storage hopper 3 to the right. The cutting process is now complete, and the target sample block can be removed and sealed. During equipment operation, manual intervention is possible via the start button 13, pause button 14, and reset button 15 on the equipment cabinet 1, allowing for one-button start, one-button reset, or pause, increasing safety.

[0032] In summary, this invention enables continuous operation without the need for frequent manual adjustments to posture and positioning, and can process multiple target test blocks at once, further shortening batch processing time, saving time and effort, and increasing efficiency.

[0033] This invention transforms the traditional manual cutting, waste processing, and liquid nitrogen freezing into a series of linked automated operations, resulting in uniform cutting of sample materials in size and shape, good uniformity of freezing temperature, and stable freezing effect. It reduces human error caused by non-standard operation during manual operation, making the results more accurate, reasonable, and consistent with actual conditions. This invention improves the liquid nitrogen freezing step after sampling into an automated freezing process, which can perform point-spray liquid nitrogen cooling and freezing, making it convenient and fast. The timing of sampling and cooling is uniform, the sample consistency is strong, the results are more accurate, manual operation is reduced, operation time is shortened, and work efficiency is improved. In this invention, the equipment cabinet 1 is equipped with a microcontroller 193 and a relay 191. Various control motors and liquid nitrogen sprayers 64 are connected through the built-in hollow wiring pipe 192, thereby controlling the cutting of materials, the operation of equipment, etc., which greatly improves the continuity of experimental operations and work efficiency. The material conveying device designed in this invention can drive the conveyor belt 23 to rotate between the rotating shaft 26 and the drive motor 21 by rotating the drive motor 21. At this time, the conveyor plate 24 moves horizontally along the direction of the slide bar 22 under the fixation of the buckle 25, so that the trapezoidal storage hopper 3 can move back and forth horizontally to convey materials. The present invention has a test block fixing groove 32 installed in the trapezoidal storage hopper 3. The shape and size of the material to be cut after being poured into the mold correspond to the test block fixing groove 32. While fixing the test block, it can also make the test block evenly stressed during cutting and avoid the test block from breaking. A top material motor 35 is installed inside the center of the trapezoidal storage hopper 3, which can push out the cut test block after vertical cutting. When the trapezoidal storage hopper 3 is conveyed to the rightmost side of the device, the bucket tilting motor 31 can tilt the trapezoidal storage hopper 3 to pour the cut waste material into the rightmost waste bin 36, realizing the overall automated processing of materials. The equipment cabinet 1 of the present invention is equipped with threaded support feet 11 at the bottom, which can be used with the spirit level 121 to adjust the level and height of the equipment to ensure that the equipment remains stable during operation.

[0034] This invention solves the problems of low cutting efficiency, uneven cutting, difficulty in batch operation, high operation intensity, and material waste in the existing technology, as well as the difficulty in unifying the freezing time and removal time and the weak consistency of samples during manual operation. It avoids the problem of condensation or slight thawing on the sample surface when manually removing samples, which causes errors and affects the test results due to the different exposure time to air (such as slow manual transfer causing the sample to warm up prematurely).

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A controllable low-strength material sample taking device, characterized in that, The equipment includes a cabinet (1), an integrated control device, a trapezoidal storage hopper (3), a material conveying device, a vertical cutting device, a horizontal cutting device, and a liquid nitrogen spraying device. The cabinet (1) is equipped with an integrated control device. The top of the cabinet (1) is equipped with a worktable (18). The worktable (18) is equipped with a material conveying device for moving the conveyor plate (24), a vertical cutting device and a horizontal cutting device for cutting the sample, a liquid nitrogen spraying device for freezing the sample, and a waste bin (36) for collecting waste. The trapezoidal storage hopper (3) is rotatably mounted on the conveyor plate (24), and a bucket motor (31) for adjusting the tilt angle of the trapezoidal storage hopper (3) is mounted on the conveyor plate (24). The trapezoidal storage hopper (3) is fixedly mounted with a test block fixing groove (32) and a top material motor (35) inside.

2. The controllable low-strength material sample sampling device according to claim 1, characterized in that, The material conveying device includes a square bracket (2) fixed on the workbench (18), a drive motor (21) and a slide bar (22) fixedly mounted on the square bracket (2), a conveyor plate (24) slidably mounted on the slide bar (22), a rotating shaft (26) rotatably mounted on the square bracket (2), a conveyor belt (23) is driven between the output end of the drive motor (21) and the rotating shaft (26), a belt buckle (25) is fixedly mounted on the conveyor belt (23), and the belt buckle (25) is fixedly connected to the conveyor plate (24).

3. The controllable low-strength material sample sampling device according to claim 2, characterized in that, The vertical cutting device includes a vertical cutting frame (4) fixed on the worktable (18). A vertical cutting motor (41), a guide column (42), a fixing plate (44) and a force plate (45) are fixedly arranged on the vertical cutting frame (4). A motor bottom seat plate (48) is fixedly arranged on the outside of the output end of the vertical cutting motor (41). The motor bottom seat plate (48) slides with the guide column (42). A shock-absorbing spring (43) is fixedly arranged on the top of the fixing plate (44). The shock-absorbing spring (43) is sleeved on the outside of the guide column (42). The output end of the vertical cutting motor (41) passes through the through hole on the fixing plate (44) and is fixedly arranged with a vertical chip collection container (47). A vertical diamond cutter head (46) is fixedly arranged at the bottom of the vertical chip collection container (47).

4. The controllable low-strength material sample sampling device according to claim 3, characterized in that, The transverse cutting device includes a transverse cutting frame (5) fixed on the worktable (18), a transverse cutting motor (51) fixedly mounted on the transverse cutting frame (5), a transverse chip collection container (55) fixedly connected to the output end of the transverse cutting motor (51) via a connecting plate, a transverse diamond cutter head (54) fixedly mounted on the side of the transverse chip collection container (55) near the force plate (45), a pusher motor (52) fixedly mounted on the connecting plate at the output end of the transverse cutting motor (51), and a pusher rod (53) extending into the transverse chip collection container (55) connected to the output end of the pusher motor (52).

5. The controllable low-strength material sample sampling device according to claim 4, characterized in that, The liquid nitrogen spraying device includes a liquid nitrogen spraying frame (6) fixed on the workbench (18), a liquid nitrogen spraying device lifting motor (61) fixedly installed on the liquid nitrogen spraying frame (6), a trapezoidal cover (62) fixedly installed at the output end of the liquid nitrogen spraying device lifting motor (61), a liquid nitrogen sprayer (64) extending to the inside of the trapezoidal cover (62) is installed on the top of the trapezoidal cover (62), the liquid nitrogen sprayer (64) is connected to the liquid nitrogen tank (63) through a liquid nitrogen delivery pipe (632), and a liquid nitrogen tank mouth (631) is installed on the liquid nitrogen tank (63).

6. The controllable low-strength material sample sampling device according to claim 5, characterized in that, A bucket-turning motor (31) and a bearing seat (34) are fixedly installed on the conveyor plate (24). A bucket-turning shaft (33) that is rotatably connected to the bearing seat (34) is fixedly installed on one side of the bottom of the trapezoidal storage hopper (3). The other side of the bottom of the trapezoidal storage hopper (3) abuts against the output end of the bucket-turning motor (31). An elastic element is provided between the bottom of the trapezoidal storage hopper (3) and the conveyor plate (24).

7. The controllable low-strength material sample sampling device according to claim 6, characterized in that, The equipment cabinet (1) is equipped with a cabinet base (19). The integrated control equipment includes a microcontroller (193), a hollow wiring pipe (192) and a relay (191) installed on the cabinet base (19). The equipment cabinet (1) is also equipped with a slotted ventilation port, a double-opening switch door (12), a start button (13), a pause button (14), a reset button (15), a power cord (16) and a power switch (17).

8. The controllable low-strength material sample sampling device according to claim 7, characterized in that, The bottom of the equipment cabinet (1) is also equipped with a leveling device, which includes a threaded support foot (11) and a spirit level (121). A threaded support foot (11) is provided at each of the four corners of the bottom of the equipment cabinet (1).

9. A controllable low-strength material sample sampling device according to claim 8, characterized in that, Multiple horizontal chip collection containers (55) are fixedly connected to the connecting plate at the output end of the horizontal cutting motor (51), and multiple push rods (53) are connected to the output end of the pusher motor (52). The number of push rods (53) is set in accordance with the number of horizontal chip collection containers (55), and the push rods (53) extend into the interior of the corresponding horizontal chip collection container (55).

10. A controllable low-strength material sample sampling device according to claim 9, characterized in that, The waste bin (36) is fixed to the workbench (18) by a positioning pin (361).

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