Shield cutter performance test detection system based on rotary rock breaking

Abstract

The utility model relates to a shield cutter performance test detection system based on rotary rock breaking, which comprises a frame mechanism, a rotary rock breaking system, a rock sample loading system, a control driving system and a sensing detection system, the technical problem that an existing reduced-scale test rock breaking device cannot completely meet the hob test simulation requirement and the rock breaking simulation requirement under the condition of different cutter configurations can be solved, reduced-scale cutter rings of different specifications and types can be installed on a cutter holder for use, the types of rock samples filled in a rock box are changed, and different experiment conditions and tunneling parameters are set; a reduced scale cutter rock breaking test is carried out under the different variable conditions, various properties and load conditions of the cutter are monitored through the host system and the sensing detection system, quantitative results are provided for evaluating the properties of different cutters, and an important reference basis is provided for selection of shield cutters in actual engineering and selection of reasonable tunneling parameters.

Description

Technical Field

[0001] The utility model relates to the technical field of underground tunnel engineering test equipment, and more specifically, to a shield tool performance test detection system based on rotary rock breaking. Background Art

[0002] With the continuous development of economy, society and science and technology, tunnel engineering technology is being used more and more widely. As a construction tool, tunnel boring machines play a vital role in underground space construction. As the "teeth" of tunnel boring machines, the performance and various indicators of cutters are crucial. When encountering high-strength rocks and uneven hard and soft strata, the cutters are severely damaged and the wear increases sharply, seriously affecting construction safety and efficiency. According to engineering data statistics, the cost of replacing and maintaining cutters can even reach one-third of the entire construction cost. Domestic and foreign scholars and research institutions have developed a variety of experimental rock breaking devices to explore the rock breaking mechanism of cutters and optimize construction parameters, thereby reducing cutter consumption and improving construction efficiency.

[0003] The experimental rock breaking device is mainly divided into full-scale test and scaled test. The full-scale test is based on the full-scale roller and scraper to carry out the rock breaking test. The test results are more real and effective, and the actual prediction of the project is more accurate. Many domestic and foreign institutions (such as Colorado School of Mines, Istanbul University, Korea Institute of Building Technology, Dalian University of Technology, Peking University, Korea Institute of Building Technology, Dalian University of Technology, Peking University, Central South University, China Railway Group, etc.) have developed corresponding full-scale test equipment. However, such large-scale tests often face some difficulties: expensive equipment, difficult maintenance, difficult rock sample collection, processing and transportation, long test cycle, high cost, unobvious roller wear effect, high test requirements, certain dangers, etc., resulting in low actual utilization rate of full-scale tests. After excluding the size effect, the rock crushing mechanism of the scaled test is the same as the actual excavation process. While simulating the actual working conditions, it overcomes the relevant shortcomings of the full-scale test, and thus has been widely used. Some domestic institutions (such as Central South University, Chang'an University, and the National Key Laboratory of Shield and Tunneling Technology) have developed corresponding scaled-down test devices. The scaled-down test reduces the test process, shortens the entire test cycle, and accelerates the wear rate of the tool. The actual application effect is good, but there are still certain defects: the test device's cutter moves in a straight line and cuts rocks linearly, which has a certain deviation from the rotary motion in actual engineering. During the actual rotary motion, the wear on the inside and outside of the cutter ring is inconsistent. The linear cutting motion of the cutter cannot fully meet the test simulation requirements, and the cutter spacing and number of cutters cannot be adjusted, and the rock breaking process under different cutter configurations cannot be simulated. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the utility model is to propose a shield cutter performance test and detection system based on rotary rock breaking, which can solve the technical problem that the current scaled test technology cannot fully meet the needs of roller cutter test simulation and rock breaking simulation under different cutter configurations.

[0005] The utility model provides a shield tool performance test and detection system based on rotary rock breaking, which provides the following technical solutions:

[0006] A shield tool performance test and detection system based on rotary rock breaking, comprising:

[0007] The frame mechanism comprises a base and a test box, wherein the test box is arranged on the base, and sliding guide rails are arranged on the top and the bottom of the test box respectively;

[0008] The rotary rock breaking system is located on a horizontal side of the test box, and includes a servo motor, a rotary cutter disc and a cutter holder. The rotary cutter disc is rotatably connected to the test box. The servo motor is used to drive the cutter disc to rotate. A cutter holder mounting guide rail is provided on the rotary cutter disc, and a plurality of cutter holder mounting holes are provided on the cutter holder mounting guide rail. The cutter holder is connected to the cutter holder mounting hole through a cutter holder mounting bolt.

[0009] The rock sample loading system is located on the side of the test box horizontally opposite to the rotary rock breaking system, and includes a rock box and a rock box bracket, a confining pressure propulsion cylinder, and an external propulsion cylinder. The rock box bracket is located outside the rock box and slides with the sliding guide rail. The external propulsion cylinder is fixed to the outside of the test box. The output end of the external propulsion cylinder extends into the inside of the test box and is connected to the rock box bracket, and is used to push the rock box bracket and the rock box to move toward / backward to the rotating cutter head. The rock box is open on one side facing the rotating cutter head, and the inside is used to arrange rock samples. The rock box includes an outer box body and a movable pad. The outer box body includes a fixed box body and a movable box plate. The movable box plate can be detachably pulled and installed on one side of the fixed box body. The movable pad is located on the inner side of the outer box body and is provided with four pieces. The movable pad is arranged around the rock sample. A plurality of surrounding rock propulsion cylinders are provided and fixed on the outer box body. The output end of the surrounding rock propulsion cylinder extends into the inside of the outer box body and is connected to the movable pad, and is used to apply pressure to the rock sample inside the movable pad.

[0010] The control drive system includes a host system, an electro-hydraulic control cabinet and a hydraulic oil pump. The hydraulic oil pump is used to pump oil to the external propulsion cylinder and the surrounding rock propulsion cylinder. The electro-hydraulic control cabinet is used to control the operation of the hydraulic oil pump and the servo motor.

[0011] The sensing detection system is used to monitor the working parameters of the rotary rock breaking system and the rock sample loading system, including a cutter disc torque sensor, a cutter disc speed sensor, a load sensor, a displacement sensor, a confining pressure sensor, and a three-dimensional force sensor; the cutter disc torque sensor and the cutter disc speed sensor are installed between the rotating cutter disc and the test box, and are used to detect the torque and speed of the rotating cutter disc respectively; the load sensor and the displacement sensor are fixed between the rock box bracket and the output end of the external propulsion cylinder, and are used to detect the load and displacement of the rock box respectively; the confining pressure sensor is arranged between the surrounding rock propulsion cylinder and the movable pad, and is used to detect the confining pressure of the rock sample; the three-dimensional force sensor is fixed between the tool holder and the rotating cutter disc, and is used to detect the force condition of the tool holder; the host system is connected to the sensing detection system and the electro-hydraulic control cabinet respectively for test control and test data display.

[0012] Furthermore, four tool holder mounting guide rails are provided, and the four tool holder mounting guide rails are arranged in groups of two, and the two tool holder mounting guide rails in the same group are arranged in parallel and spaced apart, and the two groups of tool holder mounting guide rails are vertically distributed in a cross shape.

[0013] Furthermore, the control drive system also includes a water cooling device for reducing the operating temperature of the hydraulic oil pump.

[0014] Furthermore, the sensing detection system also includes a rock slag measuring device, a temperature sensor, a laser sensor and an infrared photography system. The rock slag measuring device is located at the bottom of the test box and below the rock box. The rock slag measuring device includes an open slag collecting box at the top and a weighing sensor located inside the slag collecting box. The rock slag measuring device is used to collect and weigh the rock slag dropped from above. The temperature sensor and the laser sensor are fixed at the upper end of the rock slag measuring device, and are respectively used to detect the temperature and wear of the scale cutter ring. The infrared photography system is arranged outside the test box and is used to monitor the temperature changes of the scale cutter ring and the rock sample in real time.

[0015] Furthermore, the rotating cutter disc includes a frame and a cutter disc panel mounted on the surface of the frame through cutter disc mounting bolts. The sensor monitoring system also includes a magnetic wireless vibration sensor arranged on the cutter disc mounting bolts, and the magnetic wireless vibration sensor is used to monitor the vibration of the rotating cutter disc and the tool holder.

[0016] In summary, the beneficial effects of the utility model are as follows: the rock box and the rotating cutter head are respectively located on opposite sides of the test box, thereby realizing horizontal excavation and rock breaking, which is more in line with the actual rock breaking state; the interior of the test box has a certain degree of airtightness, which is conducive to isolating dust and reducing noise, and keeping the test environment clean and tidy. When conducting a rock breaking test, pressure is applied to the internal surrounding rock through the surrounding rock propulsion cylinder and the movable pad to simulate the surrounding pressure condition, and an external propulsion cylinder is used to push the rock box toward the rotating cutter head to achieve excavation depth and highly simulate the actual formation condition. The tool holder is fixed on the front side of the cutter head panel, and a front-mounted tool installation method is adopted to effectively avoid the installation bolts of the back-mounted tool holder. To solve the problem of fracture under stress, a gasket is added between the tool holder and the cutter head panel, and the inclination angle of the tool holder relative to the cutter head panel can be adjusted to simulate different rock breaking methods of the whole roller and the side roller; four cross-shaped tool holder mounting guide rails are arranged on the rotating cutter head, which can realize the flexible adjustment of the number of tool holders, the distance between tools and the distribution position of tools, and simulate various rock breaking working conditions; the scaled cutter ring can be detachably installed on the tool holder, which is convenient for disassembly and replacement, and the number of scaled cutter rings can be increased and the number and position of washers and fastening nuts can be adjusted to adapt, and two scaled cutter rings can be installed on the cutter shaft to simulate the rock breaking process of the double-edged roller; by replacing scaled cutter rings of different specifications, the The performance parameters and structural parameters of the scaled cutter ring, such as material, hardness, heat treatment process, scaled cutter ring thickness, diameter, cutter ring blade width, blade angle, number of cutter rings, etc., are tested for rock breaking under the above variable conditions to provide reference data for the selection of cutting tools in actual projects, which is conducive to saving project costs; different rock samples are filled in the rock box to simulate the geological conditions of the real project, such as single rocks such as granite, basalt, sandstone, complex formations such as upper soft and lower hard formations, isolated rock formations, soft rock formations, hard rock formations, etc., such as processing fractured rocks, water-bearing rocks, artificial rocks and other types of rocks, test parameters such as advancement speed, excavation depth, rotating cutter head speed, The travel trajectory can be adjusted flexibly and conveniently; the sensing detection system monitors various and comprehensive signals, including: rotating cutter disc torque and speed, rock box load and displacement, rock sample confining pressure, tool holder force, scaled cutter ring temperature and wear, rock slag weight, scaled cutter ring temperature and wear, scaled cutter ring and rock sample temperature changes, rotating cutter disc and tool holder vibration, to provide test data support for subsequent in-depth and comprehensive research on the tool rock breaking mechanism, to further clarify the tool quality defects, improve the tool processing quality, and facilitate the subsequent optimization of construction parameters and reduce construction costs, so that the test work can better serve the actual project. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment 1 of a shield tool performance test and detection system based on rotary rock breaking of the utility model;

[0018] Figure 2It is a structural schematic diagram of a rotary rock breaking system in a specific embodiment 1 of a shield tool performance test and detection system based on rotary rock breaking of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a tool holder in a specific embodiment 1 of a shield tool performance test and detection system based on rotary rock breaking of the utility model;

[0020] Figure 4 It is a structural schematic diagram of a rock box in a specific embodiment 1 of a shield tool performance test and detection system based on rotary rock breaking of the utility model;

[0021] Figure 5 It is a flowchart of the steps of a shield tool performance test detection method based on rotary rock breaking implemented by the utility model;

[0022] Figure numerals: 1-host system; 2-electro-hydraulic control cabinet; 3-test box; 4-cutter head torque sensor and cutter head speed sensor; 5-rotating cutter head; 51-cutter head panel; 52-cutter seat mounting guide rail; 53-cutter seat mounting hole; 6-rock box; 61-outer box body; 611-movable box plate; 62-movable pad; 63-surrounding rock propulsion cylinder; 7-sliding guide rail; 9-rock box bracket; 11-external propulsion cylinder; 12-hydraulic oil pump; 13 - water cooling device; 14- base; 15- load sensor and displacement sensor; 16- rock slag measuring device; 17- temperature sensor and laser sensor; 18- tool holder; 19- tool holder mounting bolt; 20- tool head mounting bolt; 211- scaled cutter ring; 212- fastening nut; 213- cutter shaft; 214- bushing; 215- bearing; 22- three-way force sensor; 23- rock sample; 24- rock breaking trajectory; 25- servo motor, DETAILED DESCRIPTION

[0023] The utility model is described in detail below in conjunction with the accompanying drawings.

[0024] Specific embodiment 1 of a shield tool performance test detection system based on rotary rock breaking of the utility model:

[0025] like Figure 1 As shown, it includes a frame mechanism, a rotary rock breaking system, a rock sample loading system, a control drive system and a sensor detection system. The frame mechanism is the main supporting body, including a base 14 and a test box 3. The test box 3 is set on the base 14. Two sliding guide rails 7 are respectively set at the top and bottom of the test box 3.

[0026] The rotary rock breaking system is located on the horizontal side of the test chamber. Figure 1-Figure 2As shown, it includes a servo motor 25, a rotating cutter disc 5 and four tool holders 18. The rotating cutter disc 5 is rotatably connected to the test box 3, and the servo motor 25 is used to drive the rotating cutter disc 5 to rotate. The rotating cutter disc 5 includes a frame and a cutter disc panel 51 installed on the surface of the frame through a cutter disc mounting bolt 20. A cutter holder mounting guide rail 52 is provided on the cutter disc panel 51, and a plurality of cutter holder mounting holes 53 are provided on the cutter holder mounting guide rail 52. The cutter holder 18 is connected to the cutter holder mounting hole 53 through a cutter holder mounting bolt 19. Four cutter holder mounting guide rails 52 are provided, and the four cutter holder mounting guide rails 52 are arranged in groups of two. The two cutter holder mounting guide rails 52 in the same group are arranged in parallel and spaced apart, and the two groups of cutter holder mounting guide rails 52 are vertically distributed in a cross shape, so that the installation quantity, installation position and cutter distance of the cutter holder 18 can be adjusted. In this embodiment, four cutter holders are provided. In other embodiments, five cutter holders can also be installed, or eight, nine or the like cutter holders can be installed after the length of the cutter holder mounting guide rails is extended.

[0027] like Figure 3 As shown, a tool assembly is installed on the tool holder 18, and the tool assembly includes a scaled cutter ring 211, a cutter shaft 213, a sleeve 214, a fastening nut 212 and a washer. The two sides of the scaled cutter ring 211 are fixed in the middle of the cutter shaft 213 by fastening nuts 212 and washers. After the sleeves 214 are installed at both ends of the cutter shaft 213, they are rotatably connected to the tool holder 18 through bearings 215.

[0028] The rock sample loading system is located on the side of the test chamber opposite to the rotary rock breaking system. Figure 1 and Figure 4 As shown, it includes a rock box 6 and a rock box bracket 9, a confining pressure propulsion cylinder 63, and an external propulsion cylinder 11. The rock box bracket 9 is located outside the rock box 6 and slides with the sliding guide rail 7. The external propulsion cylinder 11 is fixed to the outside of the test box 3. The output end of the external propulsion cylinder 11 extends into the inside of the test box 3 and is connected to the rock box bracket 9, and is used to push the rock box bracket 9 and the rock box 6 to move toward / backward the rotating cutter head 5. The rock box 6 is open on one side facing the rotating cutter head 5, and the inside is used to arrange the rock sample 23. The rock box includes an outer box body 61 and a movable pad 62. The outer box body 61 includes a fixed box body and a movable box plate 611. The movable box plate 611 can be detachably pulled and installed on one side of the fixed box body. The movable pad 62 is located on the inner side of the outer box body 61 and four pieces are set. The movable pad 62 is set around the rock sample 23. Twelve surrounding rock propulsion cylinders 63 are provided and fixed on the outer box body 61 . The output end of the surrounding rock propulsion cylinder 63 extends into the inner part of the outer box body 61 and is connected to the movable pad 62 , so as to apply pressure to the rock sample 23 inside the movable pad 62 .

[0029] The control drive system includes a main engine system 1, an electro-hydraulic control cabinet 2, a hydraulic oil pump 12 and a water cooling device 13. The hydraulic oil pump 12 is used to pump oil to the external propulsion cylinder 11 and the surrounding rock propulsion cylinder 63. The electro-hydraulic control cabinet 2 is used to control the operation of the hydraulic oil pump 12 and the servo motor 25. The water cooling device is used to reduce the operating temperature of the hydraulic oil pump 12.

[0030] The sensing detection system is used to monitor the working parameters of the rotary rock breaking system and the rock sample loading system, including a cutter head torque sensor and a cutter head speed sensor 4, a load sensor and a displacement sensor 15, a confining pressure sensor, a three-dimensional force sensor 22, a rock slag measuring device 16, a temperature sensor and a laser sensor 17, an infrared photography system, and a magnetic wireless vibration sensor. The cutter head torque sensor and the cutter head speed sensor 4 are installed between the rotating cutter head 5 and the test box 3, and are used to detect the torque and speed of the rotating cutter head 5, respectively. The load sensor and the displacement sensor 15 are fixed between the rock box bracket 9 and the output end of the external propulsion cylinder 11, and are used to detect the load and displacement of the rock box 6, respectively. The confining pressure sensor is set between the output end of the surrounding rock propulsion cylinder 63 and the movable pad 62, and is used to detect the confining pressure of the rock sample. The three-dimensional force sensor 22 is fixed between the tool holder 18 and the rotating cutter head 5, and is used to detect the force condition of the tool holder 18. The slag measuring device 16 is located at the bottom of the test box 3 and below the rock box 6. The slag measuring device 16 includes an open slag collecting box at the top and a weighing sensor located inside the slag collecting box. The slag measuring device 16 is used to collect and weigh the slag dropped from above. The temperature sensor and the laser sensor 17 are fixed to the upper end of the slag measuring device 16, and are used to detect the temperature and wear of the scaled cutter ring respectively; the infrared photography system is set outside the test box, and is used to monitor the temperature changes of the scaled cutter ring and the rock sample in real time. The magnetic wireless vibration sensor is set on the cutter head mounting bolt 20 by magnetic attraction, and the magnetic wireless vibration sensor is used to monitor the vibration of the rotating cutter head 5 and the tool holder 18. The host system is connected to the sensor detection system and the electro-hydraulic control cabinet respectively to perform test control and display test data.

[0031] When using the utility model to test the performance of a shield tool based on rotary rock breaking, scaled cutter rings of different specifications and types can be installed on the tool holder for use, the type of rock sample filled in the rock box can be changed, and different experimental conditions and excavation parameters can be set to carry out scaled cutter rock breaking tests. The various performance and load conditions of the tool can be monitored through the host system and the sensor detection system, so as to provide quantitative results for evaluating the performance of different tools, and provide an important reference basis for the selection of shield tools in actual engineering and the selection of reasonable excavation parameters.

[0032] When installing the tool, the scaled cutter rings with different performance parameters such as material, hardness, toughness, and heat treatment process, and different structural parameters such as thickness, diameter, blade width, and blade angle are used to simulate the real shield tool for testing. The scaled cutter ring 211 is installed on the cutter shaft 213 through the fastening bolts 212 and washers, and the two ends of the cutter shaft 213 are successively installed with the sleeves 214 and bearings 215 to be installed on the cutter seat 18, and then the cutter seat 18 is installed on the cutter seat installation guide rail 52. The cutter seat installation guide rail 52 is set with four rails and distributed in a cross shape. The position and number of the cutter seat are adjustable, and the rock breaking test of the cutter in different positions, different cutter spacings, and different cutter numbers can be realized. By increasing or decreasing the number of washers and fastening bolts, two scaled cutter rings 211 can be installed on the shaft to simulate the rock breaking of the double-edged hob. A pad is added at the bottom of one side of the cutter seat 18 to adjust the inclination angle of the cutter seat relative to the rotating cutter disc to simulate the rock breaking method of the side hob.

[0033] During the processing and installation of rock samples, different types of rock samples are processed: single rocks such as granite, basalt, sandstone, etc., complex formation rock samples such as upper soft and lower hard strata, isolated rock strata, soft rock strata, hard rock strata, and multi-type rocks such as fractured rocks, water-bearing rocks, artificial rocks, etc., to simulate the geological conditions of real engineering for testing. The rock samples are filled and fixed inside the rock box 6, and the movable pad is pushed by the external propulsion cylinder to fix the rock samples, and the confining pressure is applied.

[0034] When setting the test parameters, different excavation parameters and test conditions can be set to carry out scaled cutter ring rock breaking tests. The excavation parameters include: advancement speed, excavation depth, rotating cutter head speed, travel trajectory, etc. The test conditions include: scaled cutter ring performance parameters, scaled cutter ring number, scaled cutter ring position, cutter spacing, rock sample type, rock sample confining pressure parameters, etc.

[0035] Record monitoring signals and analyze monitoring results: test data are monitored in real time through a variety of sensors. The test data include: rotating cutter head torque and speed, rock box load and displacement, rock sample confining pressure, cutter seat force, scaled cutter ring temperature and wear, rock slag weight, scaled cutter ring temperature and wear, scaled cutter ring and rock sample temperature changes, and rotating cutter head and cutter seat vibration. These provide quantitative results for evaluating the performance of different cutters, and provide an important reference for the selection of shield cutters and reasonable excavation parameters in actual engineering projects.

[0036] The utility model is used to carry out a test and detection method for a shield cutter scaled cutter ring rock breaking test, such as Figure 5 As shown, the following steps are included:

[0037] S1: Before the test, use a high-precision electronic scale to weigh the scaled cutter ring, and use a vernier caliper to measure the scaled cutter ring diameter.

[0038] S2: Install and fix the rock sample in the rock box, install the scaled cutter ring on the cutter holder, and then install the cutter holder on the rotating cutter disc.

[0039] S3: Open the host system and electro-hydraulic control cabinet, clear the sensor detection system, and start the hydraulic oil pump and water cooling device.

[0040] S4: The host system sets the test parameters and starts the rock breaking test of the shrinking cutter ring. The host system records the test. The test parameters include: advancing speed, excavation depth, rotating cutter head speed, and travel trajectory.

[0041] S5: When the set test parameters are reached, the external propulsion cylinder drives the rock box back; the new shrinking ring cutter ring and rock sample are disassembled and replaced, and steps S1-S5 are repeated.

[0042] S6: After the experiment, shut down the hydraulic oil pump, main engine system, electro-hydraulic control cabinet, water cooling device and servo motor, and clean up the rock debris.

[0043] In the utility model, the rock box and the rotating cutter head are respectively located on opposite sides of the test box, so as to realize horizontal excavation and rock breaking, which is more in line with the real rock breaking state; the interior of the test box has a certain airtightness, which is conducive to isolating dust and reducing noise, and keeping the test environment clean and tidy. When conducting the rock breaking test, the surrounding rock is pressed by the surrounding rock propulsion cylinder and the movable pad to simulate the surrounding pressure, and the external propulsion cylinder is used to push the rock box toward the rotating cutter head to realize the excavation depth and highly simulate the real formation conditions. The tool holder is fixed on the front side of the cutter head panel, and the front-mounted tool installation method is adopted to effectively avoid the problem of the back-mounted tool holder mounting bolts being fractured under stress. By adding a gasket between the tool holder and the cutter disc panel, the inclination angle of the tool holder relative to the cutter disc panel can be adjusted to simulate different rock breaking methods of the whole roller cutter and the side roller cutter; four cross-shaped tool holder installation guide rails are arranged on the rotating cutter disc to realize the flexible adjustment of the number of tool holders, the distance between the cutters and the distribution position of the cutters to simulate various rock breaking working conditions; the scaled cutter ring can be detachably installed on the tool holder for easy disassembly and replacement, the number of scaled cutter rings can be increased and the number and position of the washers and the fastening nuts can be adjusted to adapt, and two scaled cutter rings can be installed on the cutter shaft to simulate the rock breaking process of the double-edged roller cutter; the scaled cutter ring can be changed by replacing scaled cutter rings of different specifications Material, hardness, heat treatment process, scaled cutter ring thickness, diameter, cutter ring edge width, edge angle, cutter ring number and other performance parameters and structural parameters, rock breaking test detection under the above variable conditions, provide reference data for the selection of cutting tools in actual projects, which is conducive to saving project costs; fill different rock samples in the rock box to simulate the geological conditions of real projects, such as single rocks such as granite, basalt, sandstone, such as upper soft and lower hard strata, isolated rock strata, soft rock strata, hard rock strata and other complex strata, such as processing fractured rocks, water-bearing rocks, artificial rocks and other types of rocks, test parameters such as advancement speed, excavation depth, rotating cutter head speed, stroke The trajectory can be adjusted flexibly and conveniently; the sensing detection system monitors various and comprehensive signals, including: rotating cutter disc torque and speed, rock box load and displacement, rock sample confining pressure, tool holder force, scaled cutter ring temperature and wear, rock slag weight, scaled cutter ring temperature and wear, scaled cutter ring and rock sample temperature changes, rotating cutter disc and tool holder vibration, which provide experimental data support for subsequent in-depth and comprehensive research on the tool rock breaking mechanism, lay the foundation for further clarifying the tool quality defects and improving the tool processing quality, and facilitate the subsequent optimization of construction parameters and reduce construction costs, so that the test work can better serve the actual project.

[0044] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A shield tool performance test and detection system based on rotary rock breaking, characterized in that: include: The frame mechanism comprises a base and a test box, wherein the test box is arranged on the base, and sliding guide rails are arranged on the top and the bottom of the test box respectively; The rotary rock breaking system is located on a horizontal side of the test box, and includes a servo motor, a rotary cutter disc and a cutter holder. The rotary cutter disc is rotatably connected to the test box. The servo motor is used to drive the cutter disc to rotate. A cutter holder mounting guide rail is provided on the rotary cutter disc, and a plurality of cutter holder mounting holes are provided on the cutter holder mounting guide rail. The cutter holder is connected to the cutter holder mounting hole through a cutter holder mounting bolt. The rock sample loading system is located on the side of the test box horizontally opposite to the rotary rock breaking system, and includes a rock box and a rock box bracket, a confining pressure propulsion cylinder, and an external propulsion cylinder. The rock box bracket is located outside the rock box and slides with the sliding guide rail. The external propulsion cylinder is fixed to the outside of the test box. The output end of the external propulsion cylinder extends into the inside of the test box and is connected to the rock box bracket, and is used to push the rock box bracket and the rock box to move toward / backward to the rotating cutter head. The rock box is open on one side facing the rotating cutter head, and the inside is used to arrange rock samples. The rock box includes an outer box body and a movable pad. The outer box body includes a fixed box body and a movable box plate. The movable box plate can be detachably pulled and installed on one side of the fixed box body. The movable pad is located on the inner side of the outer box body and is provided with four pieces. The movable pad is arranged around the rock sample. A plurality of surrounding rock propulsion cylinders are provided and fixed on the outer box body. The output end of the surrounding rock propulsion cylinder extends into the inside of the outer box body and is connected to the movable pad, and is used to apply pressure to the rock sample inside the movable pad. The control drive system includes a host system, an electro-hydraulic control cabinet and a hydraulic oil pump. The hydraulic oil pump is used to pump oil to the external propulsion cylinder and the surrounding rock propulsion cylinder. The electro-hydraulic control cabinet is used to control the operation of the hydraulic oil pump and the servo motor. The sensing detection system is used to monitor the working parameters of the rotary rock breaking system and the rock sample loading system, including a cutter disc torque sensor, a cutter disc speed sensor, a load sensor, a displacement sensor, a confining pressure sensor, and a three-dimensional force sensor; the cutter disc torque sensor and the cutter disc speed sensor are installed between the rotating cutter disc and the test box, and are used to detect the torque and speed of the rotating cutter disc respectively; the load sensor and the displacement sensor are fixed between the rock box bracket and the output end of the external propulsion cylinder, and are used to detect the load and displacement of the rock box respectively; the confining pressure sensor is arranged between the surrounding rock propulsion cylinder and the movable pad, and is used to detect the confining pressure of the rock sample; the three-dimensional force sensor is fixed between the tool holder and the rotating cutter disc, and is used to detect the force condition of the tool holder; the host system is connected to the sensing detection system and the electro-hydraulic control cabinet respectively for test control and test data display.

2. A shield tool performance test and detection system based on rotary rock breaking as claimed in claim 1, characterized in that: Four tool holder mounting guide rails are arranged, and the four tool holder mounting guide rails are arranged in groups of two. Two tool holder mounting guide rails in the same group are arranged in parallel and spaced apart, and the two groups of tool holder mounting guide rails are vertically distributed in a cross shape.

3. A shield tool performance test and detection system based on rotary rock breaking as claimed in claim 1 or 2, characterized in that: The control drive system also includes a water cooling device for reducing the operating temperature of the hydraulic oil pump.

4. A shield tool performance test and detection system based on rotary rock breaking as claimed in claim 1 or 2, characterized in that: The sensing detection system also includes a rock slag measuring device, a temperature sensor, a laser sensor and an infrared photography system. The rock slag measuring device is located at the bottom of the test box and below the rock box. The rock slag measuring device includes an open slag collecting box at the top and a weighing sensor located inside the slag collecting box. The rock slag measuring device is used to collect and weigh the rock slag dropped from above. The temperature sensor and the laser sensor are fixed at the upper end of the rock slag measuring device, and are respectively used to detect the temperature and wear of the scaled knife ring. The infrared photography system is arranged outside the test box and is used to monitor the temperature changes of the scaled knife ring and the rock sample in real time.

5. A shield tool performance test and detection system based on rotary rock breaking as claimed in claim 4, characterized in that: The rotating cutter disc includes a frame and a cutter disc panel mounted on the surface of the frame through cutter disc mounting bolts. The sensor monitoring system also includes a magnetic wireless vibration sensor arranged on the cutter disc mounting bolts. The magnetic wireless vibration sensor is used to monitor the vibration of the rotating cutter disc and the tool holder.

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