Auxiliary cutting device for cylindrical test mould required by geotechnical engineering test

Abstract

The utility model relates to the technical field of geotechnical engineering test equipment, concretely to an auxiliary cutting device of cylindrical test mould required by geotechnical engineering test, including control device, cutting device, pusher and spacing and discharge device, and each device cooperates and realizes accurate cutting and discharge of PVC pipeline, cutting device includes motor, cutting pipe blade, hydraulic retractor, and motor is connected with cutting pipe blade through connecting beam and is fixed on operating platform together, and motor drives cutting pipe blade to rotate through transmission belt, and hydraulic retractor drives first hydraulic inner column to control cutting pipe blade to go up and down, in the auxiliary cutting device of cylindrical test mould required by geotechnical engineering test, adopt hydraulic push system and automatic control logic, replace traditional manual feeding and semi -automatic positioning mode, realize large -scale continuous operation, simultaneously, the automatic opening and closing of discharging magnetic sheet and the back -and -forth structure of spring drive's discharge base reduce the auxiliary operation time of test mould collection.

Description

Technical Field

[0001] This utility model relates to the technical field of geotechnical engineering testing equipment, and more specifically, to an auxiliary cutting device for cylindrical test molds required for geotechnical engineering testing. Background Technology

[0002] In the field of geotechnical engineering testing, the standardized preparation of cylindrical test molds is a crucial prerequisite for conducting geotechnical and rock mechanics tests (such as triaxial and permeability tests). Currently, PVC pipes are commonly used as the base material for test molds, requiring cutting and processing to obtain standard specimens of specific lengths. The efficiency and accuracy of this preparation directly affect the reliability of test data and the progress of the test.

[0003] Existing trial mold cutting methods suffer from two main problems: First, traditional manual cutting relies on handheld tools, which is not only inefficient (cutting a single pipe typically takes 3-5 minutes) but also difficult to control in terms of cutting accuracy, with length errors generally ranging from ±2-3mm. This severely affects the consistency of trial mold specifications and consequently interferes with the accuracy of test results. Furthermore, the pipe is prone to slippage during manual operation, leading to a workplace injury rate as high as 12%, posing a significant safety risk. Second, while existing semi-automatic cutting equipment has partially improved safety, it still has many limitations: manual assistance is required for feeding and positioning, and a single cutting cycle still takes 30-60 seconds, making it difficult to meet the needs of mass production; cutting positioning relies on visual adjustment, with accuracy controllable only within ±1mm, failing to meet high-precision testing requirements; it has poor adaptability to different pipe diameters (Φ50-150mm), and changing fixtures takes 5-8 minutes, resulting in insufficient operational flexibility; in addition, the dispersed collection of trial molds after cutting increases auxiliary operation time by approximately 30%, further reducing overall efficiency.

[0004] The aforementioned problems are particularly prominent in scenarios such as mine exploration and field testing, where a daily output of more than 200 standard test molds is required. Existing technology has become a key bottleneck restricting the efficient conduct of geotechnical engineering tests. Therefore, developing an auxiliary cutting device for cylindrical test molds that is efficient, precise, and highly adaptable has become an urgent need to address the current pain points in the industry. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests, in order to solve the problem mentioned in the background art that the traditional manual cutting mode relies on hand tools, which is not only inefficient (cutting a single pipe usually takes 3-5 minutes), but also difficult to control the cutting accuracy, with length errors generally ranging from ±2-3mm, which seriously affects the consistency of the test mold specifications and thus interferes with the accuracy of the test results.

[0006] To achieve the above objectives, this utility model provides an auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests, including a control device, a cutting device, a pushing device, and a limiting and discharging device. The devices work together to achieve precise cutting and discharging of PVC pipes. The cutting device includes a motor, a pipe cutting blade, and a hydraulic telescopic device. The motor is connected to the pipe cutting blade via a connecting beam and is fixed together on the operating platform. The motor drives the pipe cutting blade to rotate via a transmission belt, and the hydraulic telescopic device drives the first hydraulic inner column to control the lifting and lowering of the pipe cutting blade. The pushing device includes a pipe pusher, a pipe pusher fixing platform, and a second hydraulic inner column. The pipe pusher is fixed to the pipe pusher fixing platform by a first fixing bolt and a second fixing bolt. The pipe pusher fixing platform is welded to the operating platform. The second hydraulic inner column is used to push PVC pipes. The limiting and discharging device includes a limiting base and a discharging base. The limiting base has a limiting ring groove embedded in it. Both the limiting base and the discharging base are welded with limiting ring tubes. The end of the discharging base is equipped with a discharging magnetic sheet. The bottom of the discharging base is connected to a wheel rail via a pulley and moves back and forth via a spring.

[0007] This system employs a modular design, integrating the control, cutting, pushing, and limiting / discharging devices for coordinated operation. The cutting device relies on a motor-driven belt transmission to rotate the blades, while a hydraulic telescoping mechanism controls the blades' lifting and lowering to complete the cutting action. The pushing device provides stable thrust through a hydraulic inner column, precisely pushing the PVC pipe to the cutting area. The limiting and discharging device uses the cooperation of a limiting ring groove and a limiting ring tube to fix the pipe, and then uses the sliding structure of pulleys and wheel rails, along with the elastic restoring force of springs, to achieve automatic reciprocating movement of the discharging base, coordinating with the discharging magnetic plate to complete the discharging control. All devices form a closed-loop operation process of "positioning-pushing-cutting-discharging," ensuring the continuity and precision of PVC pipe cutting.

[0008] Preferably, the control device includes a controller, which is connected to the first sensor and the second sensor on the operating platform through built-in wiring. The controller screen displays the device's operating status, and the device is controlled by a start push button, a pause button, a pipe replacement button, and an emergency stop button.

[0009] This configuration uses the controller as the core control unit. It establishes a signal transmission channel with two sensors through built-in wiring to collect data such as pipe position and equipment operating status in real time, and displays it visually on the controller screen. At the same time, it is equipped with function buttons to correspond to operations such as push start, operation pause, pipe replacement and emergency stop, forming a control logic of "signal acquisition-status feedback-command output" to achieve precise control of the entire cutting process.

[0010] Preferably, after the first sensor detects that the pipe is correctly abutting the second hydraulic inner column and is in the preset initial position to be pushed, it sends a signal to the controller to push the PVC pipe. When the second sensor detects that the PVC pipe has been pushed to a predetermined length, it sends a signal to the controller to control the second hydraulic inner column to pause. After the cutting is completed, the second hydraulic inner column is controlled to continue to advance. When the remaining pipe length does not meet the requirements, the pipe cutting blade is controlled to stop cutting and discharge the remaining pipe.

[0011] This setup involves a first sensor detecting whether the PVC pipe is in the initial push position and triggering a push signal after confirming precise contact between the pipe and the second hydraulic inner column. The second sensor monitors the pipe push length in real time and sends a pause signal when the preset value is reached. After cutting is completed, the hydraulic inner column is instructed to continue pushing. Simultaneously, the remaining pipe length is detected in real time to determine whether the cutting requirements are met. If not, a cutting stop and residual material discharge command is triggered, forming an intelligent control logic of "precise positioning - on-demand cutting - residual material handling".

[0012] Preferably, the motor of the cutting device is fixed to the support column of the support base via a motor base. The lower end of the support column is inserted into the support base. The cutting blade is covered with a blade sheath. The blade sheath is connected and fixed to a connecting beam. One end of the connecting beam is connected and fixed to the upper end of the support column via a first connecting plate. The other end of the connecting beam is connected and fixed to the top of the first hydraulic inner column via a second connecting plate.

[0013] In this design, the motor is fixed to the support column via a motor base, and the support column and support base are interlocked to form a stable vertical support structure. The connecting beam is fixed to the upper end of the support column via a first connecting plate and to the top of the hydraulic inner column via a second connecting plate, achieving a rigid connection between the cutting device and the power control components. The blade sheath is fixed to the connecting beam, providing full protection for the high-speed rotating cutting blade. This structural design ensures uniform stress on all components during cutting and reduces vibration interference.

[0014] Preferably, a motor drive shaft and a blade drive shaft are installed at both ends of the drive belt. The motor drive shaft is connected to the output shaft of the motor, and the blade drive shaft is connected and fixed to the pipe cutting blade through the blade connecting shaft. A drive belt protective shell is provided on the drive belt.

[0015] This setup uses a power transmission path of "motor drive shaft - drive belt - blade drive shaft" to precisely transmit the rotational power of the motor to the pipe cutting blade. The drive shaft and blade are rigidly fixed through the blade connecting shaft to ensure lossless power transmission. The drive belt sheath provides a closed protection for the drive belt to prevent it from falling off, wearing, or getting caught in foreign objects.

[0016] Preferably, the limiting base is fixed to the limiting and discharging device fixing platform by a support module, and the bottom of the discharging base is welded with a wheel groove, and the pulley is fixed in the wheel groove by bolts.

[0017] This setting limits the base and connects it to the fixed platform through the support module to ensure the load-bearing stability of the limiting structure and prevent the base from shifting when the pipe is pushed; the bottom of the discharge base is welded with wheel grooves, and the pulley is fixed in the wheel grooves with bolts to form a sliding support structure to ensure the smoothness and accuracy of the discharge base when it moves along the wheel rail.

[0018] Preferably, one end of the spring is connected to a first arc ring under the limiting base, and the other end of the spring is connected to a second arc ring under the discharge base. The spring drives the discharge base to move back and forth along two parallel wheel tracks.

[0019] This design utilizes the elastic deformation characteristics of springs, connecting the limiting base and the discharge base via two arc rings. After discharge is complete, the spring's restoring force drives the discharge base to move in the opposite direction along the parallel wheel track, returning to its initial position, forming an automatic "discharge-reset" cycle without the need for manual intervention to return the base to its original position.

[0020] Preferably, the feeding magnetic sheet functions as both a stop and a feeding valve. After cutting, the controller controls the opening and closing of the built-in valve of the feeding magnetic sheet to achieve segmented material discharge during trial molding.

[0021] This setting integrates dual functions for the feeding magnetic plate: when used as a stop, it can accurately position the cutting length of the PVC pipe during the pushing process; when used as a feeding valve, it receives signal instructions from the controller and controls the timing of material discharge from the trial mold through the opening and closing of the built-in valve, so as to achieve segmented and orderly material discharge.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: The auxiliary cutting device for the cylindrical test molds required for this geotechnical engineering test employs a hydraulic pushing system and automatic control logic, replacing the traditional manual feeding and semi-automatic positioning methods. This reduces the cutting cycle of a single PVC pipe from 30-60 seconds in existing technologies to less than 20 seconds, enabling large-scale continuous operation. Simultaneously, the automatic opening and closing of the feeding magnetic plate and the spring-driven reciprocating structure of the discharge base reduce the auxiliary operation time for mold collection, lowering the overall operation time by more than 30% compared to existing technologies. This can meet the daily production needs of over 200 test molds in mining and field scenarios.

[0023] By using a first sensor to accurately calibrate the initial position of the pipe and a second sensor to detect the cutting length in real time, combined with the smooth drive of the hydraulic expansion joint, the error in the test mold length is strictly controlled within ±0.5mm, far exceeding the accuracy levels of existing manual cutting (±2-3mm) and semi-automatic equipment (±1mm). The standardized test mold specifications effectively ensure the consistency and reliability of geotechnical engineering test data, providing a fundamental support for the accuracy of the test results.

[0024] By combining the limiting ring groove embedded in the limiting base with the welded limiting ring tube, it can quickly adapt to PVC pipes with different inner diameters of Φ50-200mm without changing the clamps. This solves the problem that existing equipment requires 5-8 minutes to adjust the clamps when changing pipe diameters, greatly improving the equipment's responsiveness to the needs of preparing multi-specification test molds. It is suitable for diverse needs in various scenarios such as geotechnical testing and rock mechanics testing.

[0025] The cutting device is equipped with blade guards and drive belt guards, effectively isolating high-speed rotating parts and preventing operator contact risks. The control device has an emergency stop button and a pause function to respond promptly to emergencies. At the same time, the automated pushing and cutting process reduces direct human involvement in hazardous operations, lowering the risk of workplace accidents from 12% of traditional manual cutting to almost zero, significantly improving the equipment's operational safety level.

[0026] The controller integrates parameter setting, status display, and operation control functions, enabling simplified operation with "one-click start and automatic completion," thus reducing the skill requirements for operators. Furthermore, the second sensor automatically identifies the remaining pipe length; if it does not meet cutting requirements, the control equipment stops cutting and discharges the excess material, avoiding ineffective processing and material waste, and improving resource utilization. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is one of the schematic diagrams of the cutting device of this utility model; Figure 3 This is the second schematic diagram of the cutting device of this utility model; Figure 4 This is a schematic diagram of the pushing device structure of this utility model; Figure 5 This is a schematic diagram of the limiting and discharging device of this utility model; Figure 6 This is a schematic diagram of the control device structure of this utility model; The meanings of the labels in the diagram are as follows: 1. Motor; 2. Drive belt housing; 3. Drive belt; 4. Connecting beam; 5. Blade housing; 6. Blade connecting shaft; 7. Pipe cutting blade; 8. Hydraulic telescopic device; 9. First hydraulic inner column; 10. Operating platform; 11. Support base; 12. Support column; 13. Motor base; 14. Blade drive shaft; 15. Motor drive shaft; 16. First connecting base plate; 17. Second connecting base plate; 18. Second hydraulic inner column; 19. Pipe pusher / puller; 20. First fixing bolt; 21. Second fixing bolt; 22. Pipe pusher / puller fixing platform; 23. Discharge magnetic plate; 24. 25. Discharge base; 26. Limiting ring tube; 27. Limiting ring groove; 28. Limiting base; 29. ​​Support module; 20. First arc ring; 31. Spring; 32. Second arc ring; 33. Wheel groove; 34. Bolt; 35. Pulley; 36. Wheel rail; 37. Limiting and discharging device fixing platform; 38. Controller screen; 39. Start push button; 40. Emergency stop button; 41. Tube change button; 42. Emergency stop button; 43. First sensor; 44. Second sensor; 45. Control device; 46. Cutting device; 47. Pushing device; 48. Limiting and discharging device. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides an auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests, such as... Figures 1-6 As shown, it includes a control device 44, a cutting device 45, a pushing device 46, and a limiting and discharging device 47. The devices work together to achieve precise cutting and discharging of PVC pipes. The cutting device 45 includes a motor 1, a pipe cutting blade 7, and a hydraulic telescopic device 8. The motor 1 is connected to the pipe cutting blade 7 through a connecting beam 4 and is fixed together on the operating platform 10. The motor 1 drives the pipe cutting blade 7 to rotate via a transmission belt 3. The hydraulic telescopic device 8 drives the first hydraulic inner column 9 to control the lifting and lowering of the pipe cutting blade 7. The pushing device 46 includes a pipe pusher 19, a pipe pusher fixing platform 22, and a second hydraulic inner column 18. The pipe pusher 19 is fixed to the pipe pusher fixing platform 22 by a first fixing bolt 20 and a second fixing bolt 21. The pipe pusher fixing platform 22 is welded to the operating platform 10. The second hydraulic inner column 18 is used to push PVC pipes. The limiting and discharging device 47 includes a limiting base 27 and a discharging base 24. The limiting base 27 has a limiting ring groove 26 embedded in it. Both the limiting base 27 and the discharging base 24 are welded with limiting ring tubes 25. The end of the discharging base 24 is equipped with a discharging magnetic sheet 23. The bottom of the discharging base 24 is connected to the wheel rail 35 through a pulley 34 and moves back and forth through a spring 30.

[0030] Through modular design, the control device 44, cutting device 45, pushing device 46, and limiting and discharging device 47 are integrated and work together: the cutting device 45 relies on the motor 1 to drive the transmission belt 3 to rotate the pipe cutting blade 7, and the hydraulic telescopic device 8 drives the first hydraulic inner column 9 to control the lifting and lowering of the pipe cutting blade 7 to complete the cutting action; the pushing device 46 provides stable thrust through the second hydraulic inner column 18 to accurately push the PVC pipe to the cutting area, wherein the pipe pusher 19 is fixed by the first fixing bolt 20 and the second fixing bolt 21. The pipe pusher / puller fixing platform 22 is welded to the operating platform 10 to ensure the stability of the pushing process. The limiting and discharging device 47 uses the limiting ring groove 26 embedded in the limiting base 27 and the limiting ring tube 25 welded on the limiting base 27 and the discharging base 24 to fix the pipe. Then, through the sliding structure of the pulley 34 and the wheel rail 35 at the bottom of the discharging base 24 and the elastic restoring force of the spring 30, the automatic reciprocating motion of the discharging base 24 is realized. The discharging control is completed with the discharging magnetic plate 23 at the end of the discharging base 24. The various devices form a closed-loop operation process of "positioning-pushing-cutting-discharging" to ensure the continuity and accuracy of PVC pipe cutting.

[0031] This design solves the problem of disconnection between different stages in traditional cutting methods, enabling multi-device collaborative automated operation and significantly improving cutting efficiency. The combined structure of the limiting ring groove 26 and the limiting ring pipe 25 effectively prevents pipe deviation during cutting, laying the foundation for precise cutting. The overall integrated design simplifies the equipment layout and reduces operational complexity, making it suitable for the batch preparation of cylindrical test molds in geotechnical engineering tests. The unified load-bearing design of the operating platform 10 also improves the overall stability of the equipment.

[0032] In this embodiment, the control device 44 includes a controller. The controller is connected to the first sensor 42 and the second sensor 43 on the operating platform 10 through built-in lines. The controller screen 37 displays the device operating status and controls the device operation through the start push button 38, pause button 39, pipe change button 40, and emergency stop button 41.

[0033] As the core control unit, the controller establishes a signal transmission channel with the first sensor 42 and the second sensor 43 on the operating platform 10 through built-in circuitry, collects data such as pipe position and equipment operating status in real time, and displays them visually on the controller screen 37; at the same time, it is equipped with a start push button 38, a pause button 39, a pipe replacement button 40, and an emergency stop button 41, which correspond to push start, operation pause, pipe replacement, and emergency stop operations, respectively, forming a control logic of "signal acquisition-status feedback-command output" to achieve precise control of the entire cutting process.

[0034] It replaces traditional manual monitoring and operation, enabling real-time visualization of equipment operation status, making it easy for operators to keep track of work progress; the control buttons in the functional zones improve the ease of operation, and the emergency stop button 41 can quickly respond to sudden failures, significantly improving the safety and controllability of equipment operation and reducing the probability of human error; the signal transmission stability of the first sensor 42 and the second sensor 43 also ensures the accurate execution of control commands.

[0035] Specifically, after the first sensor 42 detects that the pipe is correctly abutting the second hydraulic inner column 18 and is in the preset initial position to be pushed, it sends a signal to the controller to push the PVC pipe. When the second sensor 43 detects that the PVC pipe has been pushed to the predetermined length, it sends a signal to the controller to control the second hydraulic inner column 18 to pause. After the cutting is completed, the second hydraulic inner column 18 is controlled to continue to advance. When the remaining pipe length does not meet the requirements, the pipe cutting blade 7 is controlled to stop cutting and discharge the remaining pipe.

[0036] Push signal; the second sensor 43 monitors the pushing length of the pipe in real time, and sends a pause signal when the preset value is reached. After the cutting is completed, the second hydraulic inner column 18 is instructed to continue pushing; at the same time, the remaining pipe length is detected in real time to determine whether the cutting requirements are met. If not, the pipe cutting blade 7 is triggered to stop cutting and discharge the excess material, forming an intelligent control logic of "precise positioning - on-demand cutting - excess material handling".

[0037] With the dual precision detection of the first sensor 42 and the second sensor 43, the cutting length error is controlled within a high-precision range, solving the problem of insufficient accuracy caused by manual positioning and visual judgment; the cutting process is automated and continuous, eliminating the need for manual intervention in positioning and waste material screening; material waste caused by ineffective cutting is avoided, resource utilization is improved, and the uniformity of mold specifications is ensured, providing support for the reliability of test data. The precise start and stop control of the second hydraulic inner column 18 further optimizes the operation process.

[0038] Furthermore, the motor 1 of the cutting device 45 is fixed to the support column 12 of the support base 11 via the motor base 13. The lower end of the support column 12 is inserted into the support base 11. The pipe cutting blade 7 is covered with a blade sheath 5. The blade sheath 5 is connected and fixed to the connecting beam 4. One end of the connecting beam 4 is connected and fixed to the upper end of the support column 12 via the first connecting base plate 16. The other end of the connecting beam 4 is connected and fixed to the top of the first hydraulic inner column 9 via the second connecting base plate 17.

[0039] The motor 1 is fixed to the support column 12 via the motor base 13. The lower end of the support column 12 is inserted into the support base 11 to form a stable vertical support structure. The connecting beam 4 is fixed to the upper end of the support column 12 via the first connecting plate 16 and to the top of the first hydraulic inner column 9 via the second connecting plate 17, achieving a rigid connection between the cutting device 45 and the power control components. The blade sheath 5, which covers the pipe cutting blade 7, is fixed to the connecting beam 4, providing full protection for the high-speed rotating pipe cutting blade 7. This structural design ensures that the components are subjected to uniform force during the cutting process and reduces vibration interference.

[0040] The structural stability of the cutting device 45 is significantly improved. The plug-in fit between the support base 11 and the support column 12 and the double fixing design of the connecting beam 4 reduce the vibration amplitude during cutting and indirectly improve the cutting accuracy. The blade shell 5 effectively isolates the rotating parts and avoids the safety risks of operators coming into contact with the high-speed blade. The modular fixing method facilitates the installation, disassembly and maintenance of the equipment and extends the service life of core components such as the motor 1 and the pipe cutting blade 7. The strong connection between the first connecting plate 16 and the second connecting plate 17 also ensures the structural reliability of long-term operation.

[0041] Furthermore, motor drive shaft 15 and blade drive shaft 14 are installed at both ends of the transmission belt 3. The motor drive shaft 15 is connected to the output shaft of the motor 1, and the blade drive shaft 14 is connected and fixed to the tube cutting blade 7 through the blade connecting shaft 6. The transmission belt 3 is covered with a transmission belt protective shell 2.

[0042] The power transmission path of "motor drive shaft 15-drive belt 3-blade drive shaft 14" accurately transmits the rotational power of motor 1 to the pipe cutting blade 7. The blade connecting shaft 6 achieves rigid fixation between the blade drive shaft 14 and the pipe cutting blade 7, ensuring lossless power transmission. The drive belt sheath 2, which is installed on the drive belt 3, forms a closed protection for the drive belt 3, preventing the belt from falling off, wearing, or getting caught in foreign objects.

[0043] The coordinated transmission of the motor drive shaft 15, the drive belt 3, and the blade drive shaft 14 ensures the stability and efficiency of power transmission, keeps the pipe cutting blade 7 rotating at a uniform speed, and improves the flatness of the cutting surface. The drive belt sheath 2 effectively protects the transmission components, reduces the impact of environmental factors on the transmission system, and lowers the equipment failure rate. The simplified power transmission structure facilitates the later maintenance and replacement of the transmission components. The rigid fixation of the blade connecting shaft 6 also prevents the blade from loosening or shifting during the cutting process.

[0044] Furthermore, the limiting base 27 is fixed to the limiting and discharging device 47 fixed platform 36 by the support module 28, and the bottom of the discharging base 24 is welded with a wheel groove 32, and the pulley 34 is fixed in the wheel groove 32 by bolts 33.

[0045] The limiting base 27 is connected to the limiting and discharge device 47 fixed platform 36 through the support module 28 to ensure the load-bearing stability of the limiting structure and prevent the base from shifting when the pipe is pushed; the discharge base 24 has a pulley 34 fixed in the wheel groove 32 welded to the bottom by bolts 33 to form a sliding support structure to ensure the smoothness and accuracy of the discharge base 24 when it moves along the wheel rail 35.

[0046] The stable connection between the limiting base 27 and the support module 28 ensures the reliability of pipe positioning and prevents pipe shaking during cutting; the precise fit between the pulley 34 and the wheel groove 32 reduces the frictional resistance when the discharge base 24 moves, improving discharge efficiency; the bolt 33 fixing method facilitates the replacement and maintenance of the pulley 34, enhancing the durability of the equipment; the load-bearing design of the limiting and discharge device 47 fixing platform 36 also ensures the stability of the overall structure.

[0047] Furthermore, one end of the spring 30 is connected to the first arc ring 29 under the limiting base 27, and the other end of the spring 30 is connected to the second arc ring 31 under the discharge base 24, driving the discharge base 24 to move back and forth along the two parallel wheel rails 35.

[0048] Utilizing the elastic deformation characteristics of spring 30, the first arc ring 29 under the limiting base 27 and the second arc ring 31 under the discharge base 24 are respectively connected to the two ends of spring 30. After the discharge is completed, the restoring force of spring 30 drives the discharge base 24 to move in the opposite direction along the two parallel wheel rails 35 and return to the initial position, forming an automatic cycle of "discharge-reset" without the need for manual intervention to return the base to its position.

[0049] The automatic reset of the discharge base 24 significantly reduces manual operation time and improves overall work efficiency; the cooperation between the parallel wheel rail 35 and the spring 30 ensures the straightness of the base movement and avoids discharge deviation; the elastic drive buffers the impact force during the movement, reduces the wear of components such as the discharge base 24 and pulley 34, and extends the service life of the equipment; the connection design between the first arc ring 29 and the second arc ring 31 also ensures the stable transmission of the driving force of the spring 30.

[0050] Furthermore, the feeding magnetic sheet 23 also functions as a stop and a feeding valve. After cutting, the controller controls the opening and closing of the built-in valve of the feeding magnetic sheet 23 to realize segmented material discharge during trial molding.

[0051] The feeding magnetic plate 23 integrates dual functions: when used as a stop, it can accurately position the cutting length of the PVC pipe during the pushing process; when used as a feeding valve, it receives signal instructions from the controller and controls the timing of material discharge from the trial mold through the opening and closing of the built-in valve, so as to achieve segmented and orderly material discharge.

[0052] The simplified device structure eliminates the need for additional stop and valve components, reducing equipment manufacturing costs. The controller precisely controls the opening and closing of the built-in valve of the discharge magnetic sheet 23, preventing the mold from piling up or being discharged in a disorderly manner after cutting, thus improving the orderliness of the operation. The segmented discharge design facilitates the collection and sorting of finished molds, reducing subsequent sorting time and further improving overall operational efficiency. The dual-function design of the discharge magnetic sheet 23 also enhances the integration and practicality of the equipment.

[0053] When using the auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests according to this utility model, first start the device by pressing the power button on the controller 37, then input the required cutting length parameters of the test mold on the controller screen 37 to complete the device initialization.

[0054] The PVC pipe to be cut is manually placed into the limiting ring groove 26 of the limiting base 27 to ensure that the end of the pipe accurately abuts against the second hydraulic inner column 18. At this time, the first sensor 42 detects that the pipe is in the preset initial position and sends a signal to the controller to complete the loading and positioning.

[0055] Pressing the start push button 38 instructs the pipe pusher 19 to drive the second hydraulic inner column 18 to advance the PVC pipe, which moves along the guide ring 25. When the second sensor 43 detects that the pipe has reached the preset cutting length, it immediately sends a signal to the controller, which instructs the second hydraulic inner column 18 to stop advancing.

[0056] The controller controls the hydraulic expansion joint 8 to drive the first hydraulic inner column 9 to descend, which in turn drives the high-speed rotating pipe cutting blade 7 to cut into the PVC pipe, completing the trial cutting. During the cutting process, the blade guard 5 isolates the rotating parts to ensure operational safety.

[0057] After cutting is completed, the second sensor 43 sends a completion signal to the controller. The controller instructs the first hydraulic inner column 9 to rise and reset, and simultaneously controls the built-in valve of the discharge magnetic plate 23 to open, allowing the cut test mold to be discharged under the action of thrust. Subsequently, the spring 30, through the tension of the first arc ring 29 and the second arc ring 31, drives the discharge base 24 to reset in the opposite direction along the wheel rail 35, and the valve of the discharge magnetic plate 23 closes, preparing for the next cutting.

[0058] The controller instructs the second hydraulic inner column 18 to continue advancing the remaining PVC pipe, repeating the cutting process of steps 3-5. When the second sensor 43 detects that the length of the remaining pipe does not meet the preset requirements, the controller instructs the pipe cutting blade 7 to stop cutting, and at the same time controls the discharge magnetic plate 23 valve to open, discharging the remaining material.

[0059] After batch cutting is completed, press the pause button 39 or the pipe replacement button 40 to remove the remaining material or replace it with a new pipe; in case of sudden failure, press the emergency stop button 41 to immediately stop the equipment operation. After the operation is completed, turn off the power and clean and maintain the equipment surface and transmission components.

[0060] Finally, it should be noted that the electronic components in the controller screen 37 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order of each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests, characterized in that: It includes a control device (44), a cutting device (45), a pushing device (46), and a limiting and discharging device (47), which work together to achieve precise cutting and discharging of PVC pipes; The cutting device (45) includes a motor (1), a pipe cutting blade (7), and a hydraulic telescopic device (8). The motor (1) is connected to the pipe cutting blade (7) through a connecting beam (4) and is fixed together on the operating platform (10). The motor (1) drives the pipe cutting blade (7) to rotate via a transmission belt (3). The hydraulic telescopic device (8) drives the first hydraulic inner column (9) to control the lifting and lowering of the pipe cutting blade (7). The pushing device (46) includes a pipe pusher (19), a pipe pusher fixing platform (22), and a second hydraulic inner column (18). The pipe pusher (19) is fixed to the pipe pusher fixing platform (22) by a first fixing bolt (20) and a second fixing bolt (21). The pipe pusher fixing platform (22) is welded to the operating platform (10). The second hydraulic inner column (18) is used to push PVC pipes. The limiting and discharging device (47) includes a limiting base (27) and a discharging base (24). The limiting base (27) has a limiting ring groove (26) embedded in it. Both the limiting base (27) and the discharging base (24) are welded with limiting ring tubes (25). The end of the discharging base (24) is equipped with a discharging magnetic sheet (23). The bottom of the discharging base (24) is connected to the wheel rail (35) through a pulley (34) and moves back and forth through a spring (30).

2. The auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests according to claim 1, characterized in that: The control device (44) includes a controller, which is connected to the first sensor (42) and the second sensor (43) on the operating platform (10) via built-in lines. The controller screen (37) displays the device's operating status and controls the device's operation via the start push button (38), pause button (39), pipe replacement button (40), and emergency stop button (41).

3. The auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests according to claim 2, characterized in that: After the first sensor (42) detects that the pipe is correctly abutting the second hydraulic inner column (18) and is in the preset initial position to be pushed, it sends a signal to the controller to push the PVC pipe. When the second sensor (43) detects that the PVC pipe has been pushed to the predetermined length, it sends a signal to the controller to control the second hydraulic inner column (18) to pause. After the cutting is completed, the second hydraulic inner column (18) is controlled to continue to advance. When the remaining pipe length does not meet the requirements, the pipe cutting blade (7) is controlled to stop cutting and discharge the remaining pipe.

4. The auxiliary cutting device for the cylindrical test mold required for geotechnical engineering tests according to claim 1, characterized in that: The motor (1) of the cutting device (45) is fixed to the support column (12) of the support base (11) via the motor base (13). The lower end of the support column (12) is inserted into the support base (11). The cutting blade (7) is covered with a blade sheath (5). The blade sheath (5) is connected and fixed to the connecting beam (4). One end of the connecting beam (4) is connected and fixed to the upper end of the support column (12) via the first connecting base plate (16). The other end of the connecting beam (4) is connected and fixed to the top of the first hydraulic inner column (9) via the second connecting base plate (17).

5. The auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests according to claim 1, characterized in that: The two ends of the transmission belt (3) are equipped with a motor drive shaft (15) and a blade drive shaft (14). The motor drive shaft (15) is connected to the output shaft of the motor (1). The blade drive shaft (14) is connected and fixed to the tube cutting blade (7) through the blade connecting shaft (6). The transmission belt (3) is covered with a transmission belt protective shell (2).

6. The auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests according to claim 1, characterized in that: The limiting base (27) is fixed on the limiting and discharge device fixing platform (36) by the support module (28). The bottom of the discharge base (24) is welded with a wheel groove (32), and the pulley (34) is fixed in the wheel groove (32) by bolts (33).

7. The auxiliary cutting device for cylindrical test molds required for geotechnical engineering tests according to claim 1, characterized in that: One end of the spring (30) is connected to the first arc ring (29) under the limiting base (27), and the other end of the spring (30) is connected to the second arc ring (31) under the discharge base (24). The spring (30) drives the discharge base (24) to move back and forth along two parallel wheel rails (35).

8. The auxiliary cutting device for the cylindrical test mold required for geotechnical engineering tests according to claim 1, characterized in that: The feeding magnetic sheet (23) functions as both a stop and a feeding valve. After cutting, the controller controls the opening and closing of the built-in valve of the feeding magnetic sheet (23) to achieve segmented feeding of the test mold.

Images