CN111157389A - TBM rock breaking test bed with linear/rotary dual modes - Google Patents
TBM rock breaking test bed with linear/rotary dual modes Download PDFInfo
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- CN111157389A CN111157389A CN201911412843.1A CN201911412843A CN111157389A CN 111157389 A CN111157389 A CN 111157389A CN 201911412843 A CN201911412843 A CN 201911412843A CN 111157389 A CN111157389 A CN 111157389A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/58—Investigating machinability by cutting tools; Investigating the cutting ability of tools
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
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Abstract
The invention belongs to the field of tunnel engineering equipment, and particularly relates to a TBM rock breaking test bed with a linear/rotary dual mode. The problem of among the prior art TBM broken rock test device function singleness, structure complicacy, atress are unreasonable and can't truly simulate shield structure machine (TBM) operating mode is solved. The technical scheme of the invention is as follows: the soil box loading device comprises a base and a mounting frame, a loading device is installed on the mounting frame, the base comprises an upper test bed and a lower test bed, a first horizontal hydraulic cylinder and a first rail are arranged on one side of the upper test bed, a linear soil box device is arranged on the first rail, a second horizontal hydraulic cylinder and a second rail are arranged on the lower test bed, a rotary soil box device is arranged on the second rail, and the first rail and the second rail are located below the loading device. The invention has more reasonable structure, can truly simulate the actual working condition of the shield machine and is suitable for the rock breaking tests of the shield machine in a straight line mode and a rotating mode.
Description
Technical Field
The invention belongs to the field of tunnel engineering equipment, and particularly relates to a TBM rock breaking test bed with a linear/rotary dual mode.
Background
The shield machine is a large-scale high-tech construction device specially used for underground tunnel engineering excavation, and the research on tool abrasion has important significance for the smooth excavation of the shield machine and the cost reduction in the shield construction process. The shield hob and the cutter are main cutters for breaking rock by the cutterhead, the hob ring belongs to a part which is easy to damage and consume, and directly acts on an excavation surface during rock breaking. At the same time, there is also considerable wear of the cutters during the ripping process. Therefore, the research on the abrasion mechanism of the hob and the cutter is particularly important.
The diameter of the shield cutter head can reach 6-10 m, and partial tracks of the cutters at the edge of the shield cutter head for cutting rocks are more approximate to straight lines, so that the shield cutter test bed has two forms, namely a straight line type test bed simulates the cutters at the edge of the cutter head, and a rotary type test bed simulates the cutters at the center of the cutter head.
At present, the institutions such as high-grade universities such as the university of Colorado mining, the university of China, the Beijing university of industry and the like and the medium iron tunnel group Limited liability company research the shield cutter to cut the rock. A Linear Cutting test bed (Linear Cutting Machine) is manufactured by Colorado mining university, Fuxi of Nanjing university and Yajing of Nanjing university (rock fracture mode research in TBM disc cutter Linear Cutting test [ D ]. Nanjing: the institute of rock mechanics and engineering of Nanjing university, 2014: 8.) also use a Linear cutter rock breaking test bed in the research, but the Linear cutter rock breaking test bed can only simulate a single-cutter Linear rolling rock breaking process and cannot simulate the original rock confining pressure effect and the rock breaking of a cutter positioned in the center of a cutter head. In the patent device of kokui (publication number: CN101446537A) at the university of China and south, a plurality of hobbing cutters can be simultaneously installed to simulate the multi-hobbing-cutter rotary rolling rock breaking, but the rock breaking of the cutter positioned at the center of the cutter head cannot be simulated, and the factors such as the rock confining pressure effect and the like are not taken into consideration. The utility model discloses a TBM rock breaking test device (publication number: CN 102359919B) by medium-speed railway tunnel group Limited liability company, which can not perform cutting test considering factors such as the surrounding pressure effect of the original rock and the movement form of a cutter. In addition, Hunan Tan university utility model discloses a rock material storehouse and TBM hobbing cutter gyration roll extrusion rock breaking test bench (publication number: CN209342354U), this test bench can realize the hobbing cutter gyration rock breaking test under the exhibition has/does not have confined pressure condition, but its rock material storehouse structure is complicated, and because this test bench has only installed a sword, the approximate rate can cause great moment of flexure/moment of torsion to cutter arbor and guide rail below the rock box so that the test bench damages during gyration test.
In conclusion, the TBM rock breaking test device in the prior art has the problems of single function, complex structure, unreasonable stress and incapability of truly simulating the actual working condition of the shield tunneling machine (TBM), and cannot meet the requirement of the TBM rock breaking test.
Disclosure of Invention
Aiming at the problems that a TBM rock breaking test device in the prior art is single in function, complex in structure, unreasonable in stress and incapable of truly simulating the actual working condition of a shield tunneling machine (TBM), the invention provides a TBM rock breaking test bed with a linear/rotary double mode, which aims to: the structure of the TBM rock breaking test device is optimized, so that the structure is more reasonable, the actual working condition of the shield tunneling machine can be truly simulated, and the requirement of the TBM rock breaking test is met.
The technical scheme adopted by the invention is as follows:
the utility model provides a broken rock test platform of TBM with straight line/rotatory dual mode, includes base and mounting bracket, the bottom and the base fixed connection of mounting bracket, install loading device on the mounting bracket, the base includes test bench and lower test bench, one side of going up the test bench is provided with first horizontal hydraulic cylinder and first track, is provided with orthoscopic soil box device on the first track, orthoscopic soil box device is connected with first horizontal hydraulic cylinder, be provided with second horizontal hydraulic cylinder and second track on the test bench down, be provided with rotation type soil box device on the second track, rotation type soil box device is connected with second horizontal hydraulic cylinder, first track and second track are located loading device's below.
After the technical scheme is adopted, the linear rock breaking test and the rotary rock breaking test can be respectively carried out, the linear soil box device and the rotary soil box device are respectively arranged on the upper test bed and the lower test bed, the linear soil box device and the rotary soil box device are simple in structure and more reasonable in stress, large bending moment or torque cannot be caused to the first rail and the second rail below the linear soil box device and the rotary soil box device, the whole test bed is more stable in structure, the risk of damage to the test bed can be reduced, and the service life of the test bed is prolonged.
Preferably, the linear soil box device comprises a linear soil box workbench, the linear soil box workbench is connected with the first horizontal hydraulic cylinder, a linear soil box is arranged on the linear soil box workbench, and a linear rock sample is placed in the linear soil box.
After the optimized scheme is adopted, the linear rock sample can perform linear motion through the first horizontal hydraulic cylinder to simulate a TBM linear rock breaking test, the linear soil box workbench is used as the bottom of the linear soil box and used for bearing the pressure of the loading device, the first horizontal hydraulic cylinder pushes the linear soil box workbench to move on the first rail and used for adjusting the position of the linear soil box, and the first horizontal hydraulic cylinder retracts or extends to generate longitudinal feeding speed, so that the cutter can continuously and linearly cut and break rock. After rock breaking is completed, the first horizontal hydraulic cylinder can push the linear soil box device out of a working area to prepare for next discharging.
Preferably, be provided with the guide rail on the orthoscopic soil box workstation, the axis direction of guide rail is perpendicular with the axis direction of first horizontal hydraulic cylinder, be provided with the pressurize frame on the guide rail, orthoscopic soil box is located the pressurize frame, be provided with two relative first pressurize pneumatic cylinders that set up and two relative second pressurize pneumatic cylinders that set up on the pressurize frame, first pressurize pneumatic cylinder and second pressurize pneumatic cylinder mutually perpendicular, the expansion end and the orthoscopic soil box of first pressurize pneumatic cylinder are connected, the axis direction of second pressurize pneumatic cylinder is the same with the direction of guide rail, and the stiff end and the orthoscopic soil box workstation of second pressurize pneumatic cylinder are connected, and the expansion end and the orthoscopic soil box of second pressurize pneumatic cylinder are connected.
After the optimal scheme is adopted, the first pressure maintaining hydraulic cylinder and the second pressure maintaining hydraulic cylinder can load the linear soil box, the original rock surrounding pressure effect can be simulated, the linear soil box can truly simulate the actual working condition of a shield tunneling machine (TBM), the test result is more accurate, and the second pressure maintaining hydraulic cylinder can realize that the linear soil box moves in the direction of the guide rail, so that the cutter can cut the linear rock sample at different positions for many times. After the rock breaking is completed, the second horizontal hydraulic cylinder can push the rotary soil box device out of a working area to prepare for next discharging.
Preferably, rotation type soil box device includes rotation type soil box workstation, rotation type soil box workstation is connected with second horizontal hydraulic cylinder, be provided with motor and slewing bearing on the rotation type soil box workstation, last coaxial spur gear and the rotation type soil box of being provided with of slewing bearing, the rotation type rock specimen has been placed in the rotation type soil box, the motor is connected with bevel gear set, bevel gear set and spur gear meshing.
After adopting this preferred scheme, the motor drives bevel gear group and rotates, and bevel gear group drives the spur gear and rotates, and then drives the rotation type soil box and rotate, and loading device carries out the loading to the rotation type rock specimen, carries out the broken rock test of rotation type, and through the extension or the withdrawal of the horizontal pneumatic cylinder of second, rotation type soil box workstation removes required sword interval to realize the multiple cutting of cutter different positions on the rotation type rock specimen.
Preferably, a through groove is formed in one side, away from the first horizontal hydraulic cylinder, of the upper test bed, the through groove is located between the upper first rails and below the loading device, one end, close to the first horizontal hydraulic cylinder, of the through groove is arc-shaped, the rotary soil box is located in the through groove, and the top surface of the rotary soil box and the upper test bed are located on the same horizontal plane.
After adopting this preferred scheme, straight line formula soil box can not take place to interfere with the rotation type soil box, and the rotation type soil box that is located the below does not influence the rotation type soil box that is located the top and slides on first track.
Preferably, a plurality of stiffening plates are arranged between the upper test bed and the lower test bed, and the stiffening plates are in the shape of a right-angled triangle.
After adopting this preferred scheme, the structure of base is more stable, is difficult for taking place to warp or by loading device crushing when broken rock is experimental.
Preferably, the mounting frame comprises an upper end cover and a guide pillar, wherein a prestress is arranged in the guide pillar, and the lower end of the guide pillar is detachably connected with the base.
After adopting this preferred scheme, broken rock test bench is convenient for install and is dismantled, can save space moreover.
Preferably, the loading device comprises a vertical hydraulic cylinder, the lower end of the vertical hydraulic cylinder is connected with a cutter moving table, the cutter moving table is connected with the guide pillar in a sliding manner, a cutter disc is arranged on the lower portion of the cutter moving table, and a plurality of cutter seats are arranged on the cutter disc.
After the adoption of the optimal scheme, the vertical hydraulic cylinder can push the cutter moving table to move up and down, one or more cutters can be installed on the cutter head, when the cutters are installed only on the cutter seats at the center of the cutter head, the rock breaking process of the cutters at the center of the cutter head can be simulated, when the cutters are installed on the cutter seats at other positions, the single-cutter linear type rolling rock breaking process can be simulated, when the cutters are installed on the cutter seats, the rotary type rock breaking test can be simulated, and the guide pillar can guide and transmit torque.
Preferably, the plurality of tool seats are located on the same archimedes spiral line.
After the optimal scheme is adopted, the cutter seats are positioned on the same Archimedes spiral line, the actual working condition of the shield cutter head can be simulated more truly, and the test result is more accurate.
Preferably, the cutterhead is the same as the central shaft of the rotary soil box device.
After the optimal scheme is adopted, the cutter head and the rotary soil box device rotate relatively, the central shaft is the same, the actual stress condition of the shield machine (TBM) during rotary rock breaking can be truly simulated, and the test result is more accurate.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the linear type soil box device and the rotary type soil box device are simple in structure and more reasonable in stress, large bending moment or torque cannot be caused to the first rail and the second rail below the linear type soil box device and the rotary type soil box device, the structure of the whole test bed is more stable, the risk of damage to the test bed can be reduced, and the service life of the test bed is prolonged.
2. The linear rock sample can perform linear motion through the first horizontal hydraulic cylinder to simulate a TBM linear rock breaking test, the linear soil box workbench is used as the bottom of the linear soil box and used for bearing the pressure of the loading device, the first horizontal hydraulic cylinder pushes the linear soil box workbench to move on the first rail and used for adjusting the position of the linear soil box, and the first horizontal hydraulic cylinder retracts or extends out to generate longitudinal feeding speed so that the cutter can continuously and linearly cut and break rock. After rock breaking is completed, the first horizontal hydraulic cylinder can push the linear soil box device out of a working area to prepare for next discharging.
3. The first pressure maintaining hydraulic cylinder and the second pressure maintaining hydraulic cylinder can load the linear soil box and simulate the surrounding pressure effect of the original rock, so that the linear soil box can truly simulate the actual working condition of a shield machine (TBM), the test result is more accurate, and the second pressure maintaining hydraulic cylinder can realize that the linear soil box moves in the direction of the guide rail, thereby realizing multiple cutting of the cutter at different positions of the linear rock sample. After the rock breaking is completed, the second horizontal hydraulic cylinder can push the rotary soil box device out of a working area to prepare for next discharging.
4. The motor drives the bevel gear group to rotate, the bevel gear group drives the straight gear to rotate, and then the rotary soil box is driven to rotate, the loading device loads the rotary rock sample, the rotary rock breaking test is carried out, and the rotary soil box workbench moves the required cutter spacing through the extension or retraction of the second horizontal hydraulic cylinder, so that the cutters are cut at different positions on the rotary rock sample for multiple times.
5 the linear soil box and the rotary soil box do not interfere with each other, and the rotary soil box positioned below does not influence the sliding of the rotary soil box positioned above on the first track.
6. The structure that is provided with several stiffening plate bases between last test bench and the lower test bench is more stable, is difficult for taking place to warp or by loading device crushing when broken rock is experimental.
7. The rock breaking test bed is convenient to mount and dismount and can save space.
8. Vertical pneumatic cylinder can promote the cutter mobile station and reciprocate, and the mountable is one or more cutters on the blade disc, when only installing the cutter on the blade holder that lies in the blade disc center, can simulate the broken rock that lies in blade disc central point position cutter, when installing a cutter on the blade holder of other positions, can simulate the broken rock process of single-knife straight-line roll extrusion, when installing many cutters on the blade holder, can simulate the broken rock test of rotation type, and the guide pillar can lead and transmit the moment of torsion.
9. The plurality of tool apron are located same archimedes spiral line, the real operating mode of simulation shield structure blade disc that can be better, and the test result is more accurate.
10. The cutter head and the rotary soil box device rotate relatively, the central shaft is the same, the actual stress condition of the shield tunneling machine (TBM) during rotary rock breaking can be truly simulated, and the test result is more accurate.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the installation of a rectilinear soil box;
FIG. 3 is a schematic view of the installation of the rotary soil box;
FIG. 4 is a schematic illustration of the installation of the rock sample loading apparatus in a rotary breaking mode;
fig. 5 is a schematic view of the cutter head.
The test bed comprises a base 1, an upper test bed 11, a lower test bed 12, a stiffening plate 13, a first rail 14, a second rail 15, a guide pillar 21, an upper end cover 22, a vertical hydraulic cylinder 31, a cutter moving table 32, a cutter head 33, a cutter seat 34, a linear rock sample 41, a linear soil box workbench 42, a first horizontal hydraulic cylinder 43, a linear soil box 44, a pressure maintaining frame 45, a first pressure maintaining hydraulic cylinder 46, a second pressure maintaining hydraulic cylinder 47, a guide rail 48, a rotary rock sample 51, a second horizontal hydraulic cylinder 52, a rotary soil box workbench 53, a motor 54, a bevel gear set 55, a spur gear 56, a rotary soil box 57 and a rotary bearing 58.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 to 5.
The utility model provides a broken rock test bench of TBM with straight line/rotatory dual mode, includes base 1 and mounting bracket, the bottom and the 1 bolted connection of base of mounting bracket, install loading device on the mounting bracket. The base 1 adopts a double-layer structure and comprises an upper test bed 11 and a lower test bed 12, wherein a first horizontal hydraulic cylinder 43 and a first rail 14 are arranged on one side of the upper test bed 11, a linear soil box device is arranged on the first rail 14, and the linear soil box device is connected with the first horizontal hydraulic cylinder 43. The lower test bed 12 is provided with a second horizontal hydraulic cylinder 52 and a second track 15, the second track 15 is provided with a rotary soil box device, and the rotary soil box device is connected with the second horizontal hydraulic cylinder 52. The first rail 14 and the second rail 15 are located below the loading device, the first horizontal hydraulic cylinder 43 can drive the linear soil box device to move below the loading device for loading, and the second horizontal hydraulic cylinder 52 can drive the rotary soil box device to move below the loading device for loading.
The linear soil box device comprises a linear soil box workbench 42, the linear soil box workbench 42 is connected with a first horizontal hydraulic cylinder 43, a linear soil box 44 is arranged on the linear soil box workbench 42, and a linear rock sample 41 is placed in the linear soil box 44.
Taking fig. 2 as an example, the direction of the first horizontal hydraulic cylinder 43 is taken as the X direction, and the direction perpendicular to the first horizontal hydraulic cylinder 43 is taken as the Y direction. The linear soil box workbench 42 is provided with two guide rails 48, the directions of the two guide rails 48 are respectively parallel to the Y direction, the guide rails 48 are provided with a pressure maintaining frame 45, and the linear soil box 44 is positioned in the pressure maintaining frame 45. In this embodiment, the shape of the pressurizer 45 is rectangular, and two first pressure maintaining cylinders 46 are provided in the X direction of the pressurizer 45 to pressurize the linear rock sample 41. The holding frame 45 is provided with two second holding hydraulic cylinders 47 in the Y direction to press the linear rock sample in the Y direction and to move the linear rock sample in the Y direction. The movable end of the first pressure maintaining hydraulic cylinder 46 is connected to the linear soil box 44, the fixed end of the second pressure maintaining hydraulic cylinder 47 is connected to the linear soil box worktable 42, and the movable end of the second pressure maintaining hydraulic cylinder 47 is connected to the linear soil box 44.
The rotation type soil box device comprises a rotation type soil box workbench 53, the rotation type soil box workbench 53 is connected with a second horizontal hydraulic cylinder 52, a motor 54 and a slewing bearing 58 are arranged on the rotation type soil box workbench 53, a straight gear 56 and a rotation type soil box 57 are coaxially arranged on the slewing bearing 58, a rotation type rock sample 51 is placed in the rotation type soil box 57, the motor 54 is connected with a bevel gear set 55, and the bevel gear set 55 is meshed with the straight gear 56. The motor 54 rotates the rotary rock sample 51 through a coupling, a bevel gear set 55, and a spur gear. An encoder is mounted on the slewing bearing 58 for measuring power, torque and rotational speed of the rock breaking.
A through groove is formed in one side, away from the first horizontal hydraulic cylinder 43, of the upper test bed 11, the through groove is located between the upper first rails 14 and below the loading device, one end, close to the first horizontal hydraulic cylinder 43, of the through groove is arc-shaped, the rotary soil box 57 is located in the through groove, and the top surface of the rotary soil box 57 and the upper test bed 11 are located on the same horizontal plane.
A plurality of stiffening plates 13 are arranged between the upper test bed 11 and the lower test bed 12, and the shape of each stiffening plate 13 is a right-angled triangle.
The mounting frame comprises an upper end cover 22 and four guide pillars 21, wherein prestress is arranged in the guide pillars 21, and the lower ends of the guide pillars 21 are connected with the base 1 through bolts. Four guide posts 21 are used to guide and transmit torque.
The loading device comprises a vertical hydraulic cylinder 31, a cutter moving table 32 is connected to the lower end of the vertical hydraulic cylinder 31, the cutter moving table 32 is in sliding connection with the four guide pillars 21, a cutter disc 33 is arranged on the lower portion of the cutter moving table 32, a plurality of cutter seats 34 are arranged on the cutter disc 33, and the cutter seats 34 are used for installing cutters. In this embodiment, the number of the tool holders 34 is three, and the three tool holders 34 are located on the same archimedes spiral line. The cutter head 33 is the same as the rotating shaft of the rotary soil box device.
The invention also comprises a test system, wherein the test system comprises an industrial personal computer, a data acquisition card, a pressure flow velocity sensor, a three-dimensional force sensor, a high-speed camera and the like, and is used for testing the rock breaking condition and the rock breaking characteristic of the center cutter and the edge cutter on the cutter head in the rock and soil cutting process.
The specific working process of the invention is as follows:
1) when the test bed carries out linear cutting, the linear rock sample 41 is firstly placed into the linear soil box 44, and then the linear soil box worktable 42 is pushed to the cutting range of the cutter by the first horizontal hydraulic cylinder 43;
2) parameters such as cutting speed, cutting depth and the like are changed by changing the pressure and flow of a hydraulic system, the vertical hydraulic cylinder 31 is driven to feed downwards, a vertical static pressure load is given to the linear rock sample 41, the first horizontal hydraulic cylinder 43 is retracted or extended at the same time, longitudinal feeding speed is generated, a cutter can continuously and linearly cut and break rock, and the soil box is pressurized by the first pressure-maintaining hydraulic cylinder 46 and the second pressure-maintaining hydraulic cylinder 47;
3) cutting the linear rock sample 41 layer by layer through the cutter, keeping the consistent depth of the cutter invading the linear rock sample 41 during cutting through the displacement sensor, and cutting the cutter layer by layer along the longitudinal direction of the linear rock sample 41, thereby realizing that the cutter can cut the linear rock sample 41 for a plurality of times at a certain position;
4) after the cutting test of a certain position of the linear rock sample 41 is completed, the two second pressure maintaining hydraulic cylinders 47 are retracted or extended to enable the pressure maintaining frames 45 to move for a required cutter spacing distance in the Y direction, and the steps 2 and 3 are repeated, so that multiple times of cutting of the cutter on different positions of the linear rock sample 41 are realized;
5) when the test bed carries out rotary cutting, the rotary soil box workbench 53 is pushed to the foremost end by the second horizontal hydraulic cylinder 52, the rotary rock sample 51 is placed in the rotary soil box 57, and then the rotary soil box workbench 53 is pulled back to the cutting range of the cutter;
6) parameters such as cutting speed, cutting depth and the like are changed by changing the pressure and flow of a hydraulic system, the vertical hydraulic cylinder 31 is driven to feed downwards, a vertical static pressure load is provided for the rotary rock sample 51, the motor 54 is driven to operate, and the rotary soil box 57 is driven to rotate by reducing speed and transmitting torque through a coupler, a bevel gear set 55, a rotary bearing 58 and the like.
7) The rotary rock sample 51 is cut layer by layer through the cutter, the depth of the cutter invading the rotary rock sample 51 is kept consistent during cutting through the displacement sensor, the cutter is enabled to cut layer by layer along the longitudinal direction of the rotary rock sample 51, and therefore the cutter can cut for many times at a certain position of the rotary rock sample;
8) after the cutting test of a certain position of the rotary rock sample 51 is completed, the second horizontal hydraulic cylinder 52 is retracted or extended to move the rotary soil box worktable 53 in the X direction by the required cutter spacing, and the steps 6 and 7 are repeated, so that the cutter can cut the rotary rock sample 51 for multiple times at different positions.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (10)
1. A TBM rock breaking test bed with a linear/rotary dual mode is characterized in that: including base (1) and mounting bracket, the bottom and base (1) fixed connection of mounting bracket, install loading device on the mounting bracket, base (1) includes test bench (11) and lower test bench (12), the one side of going up test bench (11) is provided with first horizontal hydraulic cylinder (43) and first track (14), is provided with rectilinear soil box device on first track (14), rectilinear soil box device is connected with first horizontal hydraulic cylinder (43), be provided with second horizontal hydraulic cylinder (52) and second track (15) on test bench (12) down, be provided with rotation type soil box device on second track (15), rotation type soil box device is connected with second horizontal hydraulic cylinder (52), first track (14) and second track (15) are located loading device's below.
2. The TBM rock breaking test bed with the linear/rotary dual mode is characterized in that the linear soil box device comprises a linear soil box workbench (42), the linear soil box workbench (42) is connected with a first horizontal hydraulic cylinder (43), a linear soil box (44) is arranged on the linear soil box workbench (42), and a linear rock sample (41) is placed in the linear soil box (44).
3. The TBM rock breaking test bed with the linear/rotary dual mode is characterized in that a guide rail (48) is arranged on the linear soil box working table (42), the axial direction of the guide rail (48) is perpendicular to the axial direction of a first horizontal hydraulic cylinder (43), a pressure maintaining frame (45) is arranged on the guide rail (48), the linear soil box (44) is positioned in the pressure maintaining frame (45), two first pressure maintaining hydraulic cylinders (46) which are oppositely arranged and two second pressure maintaining hydraulic cylinders (47) which are oppositely arranged are arranged on the pressure maintaining frame (45), the first pressure maintaining hydraulic cylinders (46) and the second pressure maintaining hydraulic cylinders (47) are perpendicular to each other, the movable ends of the first pressure maintaining hydraulic cylinders (46) are connected with the linear soil box (44), and the axial direction of the second pressure maintaining hydraulic cylinders (47) is the same as the direction of the guide rail (48), the fixed end of the second pressure maintaining hydraulic cylinder (47) is connected with the linear soil box workbench (42), and the movable end of the second pressure maintaining hydraulic cylinder (47) is connected with the linear soil box (44).
4. The TBM rock breaking test bed with the linear/rotary dual mode is characterized in that the rotary soil box device comprises a rotary soil box workbench (53), the rotary soil box workbench (53) is connected with a second horizontal hydraulic cylinder (52), a motor (54) and a rotary bearing (58) are arranged on the rotary soil box workbench (53), a straight gear (56) and a rotary soil box (57) are coaxially arranged on the rotary bearing (58), a rotary rock sample (51) is placed in the rotary soil box (57), the motor (54) is connected with a bevel gear set (55), and the bevel gear set (55) is meshed with the straight gear (56).
5. The TBM rock breaking test bed with the linear/rotary dual mode is characterized in that a through groove is formed in one side, far away from the first horizontal hydraulic cylinder (43), of the upper test bed (11), the through groove is located between the upper first rails (14) and located below the loading device, one end, close to the first horizontal hydraulic cylinder (43), of the through groove is in an arc shape, the rotary soil box (57) is located in the through groove, and the top surface of the rotary soil box (57) and the upper test bed (11) are located on the same horizontal plane.
6. The TBM rock breaking test bed with the linear/rotary dual mode is characterized in that a plurality of stiffening plates (13) are arranged between the upper test bed (11) and the lower test bed (12), and the shape of each stiffening plate (13) is a right triangle.
7. The TBM rock breaking test bed with the linear/rotary dual mode is characterized in that the mounting frame comprises an upper end cover (22) and a guide pillar (21), wherein a prestress is arranged in the guide pillar (21), and the lower end of the guide pillar (21) is detachably connected with the base (1).
8. The TBM rock breaking test bed with the linear/rotary dual mode is characterized in that the loading device comprises a vertical hydraulic cylinder (31), a cutter moving table (32) is connected to the lower end of the vertical hydraulic cylinder (31), the cutter moving table (32) is in sliding connection with a guide post (21), a cutter head (33) is arranged at the lower part of the cutter moving table (32), and a plurality of cutter seats (34) are arranged on the cutter head (33).
9. The TBM breaking test bed with the linear/rotary dual mode as recited in claim 8, characterized in that the plurality of tool holders (34) are located on the same Archimedes spiral.
10. The TBM breaking test bench with linear/rotary dual modes as claimed in claim 8, wherein said cutterhead (33) is identical to the rotary shaft of the rotary soil box device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911412843.1A CN111157389A (en) | 2019-12-31 | 2019-12-31 | TBM rock breaking test bed with linear/rotary dual modes |
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| CN201911412843.1A CN111157389A (en) | 2019-12-31 | 2019-12-31 | TBM rock breaking test bed with linear/rotary dual modes |
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| CN111157389A true CN111157389A (en) | 2020-05-15 |
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| CN201911412843.1A Pending CN111157389A (en) | 2019-12-31 | 2019-12-31 | TBM rock breaking test bed with linear/rotary dual modes |
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Application publication date: 20200515 |