CN111091747A - TBM hobbing cutter multifunctional test bed - Google Patents
TBM hobbing cutter multifunctional test bed Download PDFInfo
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- CN111091747A CN111091747A CN201911414481.XA CN201911414481A CN111091747A CN 111091747 A CN111091747 A CN 111091747A CN 201911414481 A CN201911414481 A CN 201911414481A CN 111091747 A CN111091747 A CN 111091747A
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 239000011435 rock Substances 0.000 claims abstract description 160
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 36
- 230000007246 mechanism Effects 0.000 abstract description 13
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
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- 238000009434 installation Methods 0.000 description 10
- 239000003638 chemical reducing agent Substances 0.000 description 7
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- 238000010276 construction Methods 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
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- 230000005641 tunneling Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The invention discloses a TBM hob multifunctional test bed. The invention belongs to the field of test beds for rock breaking simulation of TBM cutters, and particularly relates to a multifunctional test bed for a TBM hob. The invention solves the problem that the existing test bed can not give consideration to both the test period and the actual working condition. The scheme of the invention is as follows: including horizontal base and rock case moving system, the middle part of horizontal base is provided with removes the frame, and horizontal base passes through the guide post with removing the frame and is connected, and the middle part of horizontal base is run through and is provided with hydraulic propulsion system, removes to be provided with actuating system on the frame, and actuating system is connected with transmission system, and transmission system is connected with the cutter system. The rotary rock breaking machine can carry out rotation and linear rock breaking experiments of a full-size cutter and a scaling cutter, and research rock breaking mechanisms and abrasion mechanisms of TBM hobs so as to improve rock breaking efficiency and service life of the cutters.
Description
Technical Field
The invention belongs to the field of test beds for rock breaking simulation of TBM cutters, and particularly relates to a multifunctional test bed for a TBM hob.
Background
The full-face Tunnel Boring Machine (TBM) is a special engineering machine for tunneling, has safe excavation and lining, and has high tunneling speed; the whole processes of propelling, unearthing, splicing lining and the like can realize automatic operation, and the construction labor intensity is low; ground traffic and facilities are not influenced, and facilities such as underground pipelines and the like are not influenced; the tunnel has the advantages of no influence on shipping when passing through a river channel, no influence of weather conditions such as seasons, wind, rain and the like in construction, no noise and disturbance in construction and the like, and is widely used for tunnel engineering of railways, highways, municipal administration, hydropower and the like. According to statistics, the cost caused by the direct or indirect wear of the cutter accounts for about 1/3 of the total construction cost of the shield tunnel, so that the exploration of the wear mechanism of the cutter is quite important for the shield tunnel construction. The hob is the main cutter for cutting broken rock on a TBM (Tunnel boring Machine), and the rock breaking mechanism is that the rock is impacted and crushed during jumping and is sheared and crushed after being pressed down.
At present, the rock breaking mechanism and the cutting performance of hobbing cutters with different installation radiuses on a cutter head are different. Research shows that the rock breaking mechanism of the hob with larger installation radius is that rock breaking by edge bottom extrusion is combined with rock breaking by edge side shearing; the hob with a small installation radius, namely the central hob also has the rock breaking effect of edge bottom extrusion, but the edge side of the hob generates a stronger side rolling effect (the edge side close to the center of the hob crushes the rock) due to the small installation radius. The cutter is required to be replaced when the cutter fails in the tunneling process, the workload for replacing the cutter is large, and danger exists, so that the load characteristic of the cutter and the rock and soil crushing effect are necessarily analyzed when the hob cuts crushed rock and soil, the structure and the working parameters of the hob are correspondingly improved, and the service life of the hob is prolonged.
In the prior art, a test bed can be divided into a full-size cutter test bed and a scaled cutter test bed from the aspect of cutter size experiment, wherein the full-size cutter test bed uses a full-size cutter to simulate the rock breaking working condition of a TBM hob as much as possible, but the cutter size is large, the test period is long, and the experiment cost is huge; the scaling tool test bed has the advantages of short test period, low test cost and the like, but the test tool is formed by scaling a full-size tool according to a certain proportion, and the rock breaking mechanism and the abrasion mechanism of the test tool are slightly different from the real TBM, so that the test period and the actual working condition of the existing test bed cannot be considered at the same time.
Disclosure of Invention
Aiming at the problem that the existing test bed in the prior art cannot give consideration to the test period and the actual working condition, the invention provides a TBM hob multifunctional test bed, which aims to: the rotation and linear rock breaking experiments of the full-size cutter and the scaling cutter can be carried out, and the rock breaking mechanism and the abrasion mechanism of the TBM hob are researched so as to improve the rock breaking efficiency and the service life of the cutter.
The technical scheme adopted by the invention is as follows:
the utility model provides a TBM hobbing cutter multifunctional test platform, includes horizontal base and rock case moving system, the middle part of horizontal base is provided with removes the frame, horizontal base is connected through the guide post with removing the frame, the middle part of horizontal base is run through and is provided with hydraulic propulsion system, hydraulic propulsion system with remove frame fixed connection, it is provided with actuating system on the frame to remove, actuating system is connected with transmission system, transmission system is connected with cutter system through dismantling, and cutter system includes full-scale cutter system or scaling blade disc system, cutter system cooperatees with rock case moving system.
By adopting the scheme, the transverse base is formed by welding steel plates and sectional materials, the bottom surface of the transverse base is provided with a groove and a bolt hole for mounting the guide rail, and the side plate on the right side is provided with a mounting hole for mounting the guide column and the hydraulic propulsion system and a bolt hole for fixing; the left side plate is provided with a mounting hole for mounting the guide post. The movable frame is formed by welding a steel plate and a section bar, and a groove for mounting a sliding block (not shown) and a bolt hole are formed in the lower bottom surface of the movable frame; the corresponding position on the upper bottom surface is also provided with a mounting seat and a fixing bolt hole for mounting a driving system and a transmission system; a mounting hole for mounting a linear bearing (not shown) and a hydraulic propulsion system and a bolt hole for fixing are formed in the side plate on the right side; the side plate on the left side is provided with a mounting hole for mounting the linear bearing and the main bearing and a bolt hole for fixing. The transmission system comprises a coupler, a speed reducer, a tapered roller bearing seat, a tapered roller bearing, a gear shaft and a main bearing; the speed reducer is respectively connected with the driving system and the gear shaft through a coupler; the tapered roller bearing is respectively connected with the tapered roller bearing seat and the gear shaft through interference fit; the gear shaft is meshed with the inner gear ring of the main bearing to transmit power; the power output end of the transmission system, namely the main bearing can be provided with a full-size cutter system or a scaling cutter head system for carrying out rock breaking experiments of full-size cutters or scaling cutters.
Preferably, the cutter system is a full-scale cutter system.
By adopting the scheme, the full-size cutter system can be driven by the transmission system to rotate around the feeding direction, so that the cutter is ensured to be tangent to the track direction relative to the movement direction of the rock sample, and the full-size cutter type rotation rock breaking experiment is carried out. The full-size cutter test bed is provided with a full-size cutter, and the rock breaking working condition of the TBM hob is simulated as far as possible.
Preferably, the cutter system is a scaling cutter head system, the scaling cutter head system comprises scaling cutter heads, a plurality of groups of T-shaped grooves are formed in the scaling cutter heads, and scaling cutters are arranged on the T-shaped grooves.
By adopting the scheme, the scaling cutterhead system comprises a scaling cutterhead and a scaling cutter; the scaling cutter head is formed by welding a steel plate and a section bar, and the back surface of the scaling cutter head is provided with a flange plate for connecting and transmitting power with the total three-way force sensor; six groups of T-shaped grooves are uniformly formed in the front surface of the cutter, and are matched with T-shaped bolts to adjust and fix the position of a scaling cutter on a scaling cutter head so as to realize experiments of different installation radiuses and cutter intervals. The scale test bed has the advantages of short experimental period, low experimental cost and the like.
Preferably, six groups of T-shaped grooves are formed in the scaling cutter head, and a plurality of scaling cutters are fixedly arranged on the T-shaped grooves.
Preferably, the cutter system comprises a three-way force sensor, the three-way force sensor is connected with two press strips fixedly connected with one end of the cutter holder, and a cutter module is arranged between the two press strips.
By adopting the scheme, the three-way force sensor is fixedly connected to the cutter holder, the cross section of the cutter holder is in a door shape, the two sides of the bottom of the cutter holder are fixedly connected with the pressing strips through bolts, the cutter modules are arranged between the pressing strips on the two sides, and the pressing strips on the two sides compress the rotating shafts of the cutter modules. The shaft end of the cutter module is designed to be of a rectangular structure, is matched with notches formed in the cutter holder and the pressing strip and is fixed by bolts, and the bottom of the cutter holder is designed to be provided with a flange and is connected with a flange at the output end of the transmission shaft by bolts in a matched mode to transmit power.
Preferably, the rock box moving system comprises a longitudinal base, a guide rail I is arranged in the longitudinal base, a rock box moving block is connected to the guide rail, one end of a longitudinal hydraulic cylinder group is fixedly connected to the bottom of the rock box moving block, a rock box is fixedly connected to the other end of the longitudinal hydraulic cylinder group, a guide rail II used for the rock box to move is arranged in the rock box moving block, a transverse hydraulic cylinder group is fixedly connected to one end of the rock box moving block, and the transverse hydraulic cylinder group penetrates through one end of the longitudinal base.
By adopting the scheme, the rock box moving system comprises a transverse hydraulic cylinder group, a longitudinal base and a rock box moving block (a longitudinal hydraulic cylinder group, a rock box, a rock sample and a guide rail group); the longitudinal base is fixed on the foundation; the transverse hydraulic cylinder group is respectively connected with the longitudinal base and the rock box moving block through bolts to push the rock box to do transverse movement; the rock box moving block is arranged on the longitudinal base in a matching way through a guide rail and can be pushed and pulled by the transverse hydraulic cylinder group to do transverse reciprocating movement; placing the rock sample in a rock box, filling the gap with an adhesive for fixing, hoisting the rock box, inserting the rock box into a groove formed in a rock box moving block, and fixing the rock sample by using bolts; the rock box is divided into a full-size cutter experiment rock box and a scaling cutter experiment rock box, and when the full-size cutter experiment is carried out, the longitudinal hydraulic cylinder group is respectively connected with the rock box and a rock box moving block through bolts, so that the rock sample box can longitudinally reciprocate. The longitudinal base is formed by welding a steel plate and a section bar, and a groove and a bolt hole for mounting the guide rail are formed in a front bottom plate of the longitudinal base; and a mounting hole for mounting the transverse hydraulic cylinder group and a bolt hole for fixing are formed in the side plate on the right side. The transverse hydraulic cylinder group is formed by welding steel plates and sectional materials, is integrally drawer-shaped, is provided with wing plates on the left side, the right side and the lower side, and is provided with threaded holes for fixing a rock box; the right outer side and the lower inner side of the hydraulic cylinder are respectively provided with bolt holes for mounting a transverse hydraulic cylinder group and a longitudinal hydraulic cylinder group; the back of the base is provided with a bolt hole for mounting a slide block (not shown).
Preferably, the driving system is a servo motor.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the main bearing can be provided with a full-size cutter system or a scaled cutter head system for carrying out rock breaking experiments of full-size cutters or scaled cutters.
2. The full-size cutter test bed is provided with a full-size cutter, and the rock breaking working condition of the TBM hob is simulated as far as possible.
3. The scale test bed has the advantages of short experimental period, low experimental cost and the like.
4. The scaling tool can be used for multi-tool combined rock breaking experiments, and the influence of multi-tool combined action on the rock breaking efficiency and the abrasion mechanism is explored.
5. The test bed can carry out the rotary experiment rock breaking experiment and the linear rock breaking experiment of cutter, can simulate the rock breaking working condition of arbitrary installation radius cutter and sword interval on the blade disc.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic of the present invention.
Fig. 2 is a schematic view of the scaled impeller system of the present invention.
Fig. 3 is a front view of the full size tool of the present invention.
Fig. 4 is a front view of the scaled tool of the present invention.
Fig. 5 is a top view of the present invention.
FIG. 6 is a schematic view of the lateral base structure of the present invention.
FIG. 7 is a top plan view of the transmission system of the present invention.
Fig. 8 is a schematic view of the cutterhead system of the present invention.
Fig. 9 is a front view of the linear rock breaking carriage system of the scaling tool of the present invention.
Fig. 10 is an on-orbit left side view of the scaling tool linear rock breaking carriage system of the present invention.
Fig. 11 is an out-of-track left side view of the scaling tool linear rock breaking carriage system of the present invention.
Fig. 12 is a schematic view of the inventive cutter system.
Fig. 13 is a schematic view of the rock casing movement system of the present invention.
Fig. 14 is a schematic view of the structure of the rock casing of the present invention.
The following are marked in the figure: 1-transverse base, 2-hydraulic propulsion system, 3-guide column, 4-moving frame, 5-transmission system, 501-coupling, 502-speed reducer, 503-tapered roller bearing seat, 504-tapered roller bearing, 505-gear shaft, 506-main bearing, 6-cutter system, 601-three-way force sensor, 602-tool apron, 603-pressing bar, 604-cutter module, 7-rock sample moving system, 701-transverse hydraulic cylinder group, 702-longitudinal base, 703-rock box moving block, 704-longitudinal hydraulic cylinder group, 705-rock box, 706-rock sample, 707-guide rail group, 8-shrinkage cutterhead system, 801-shrinkage cutterhead, 9-driving system and 10-total three-way force sensor.
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 14.
The utility model provides a TBM hobbing cutter multifunctional test platform, includes horizontal base 1 and rock case moving system 7, the middle part of horizontal base 1 is provided with removes frame 4, horizontal base 1 is connected through guide post 3 with removing frame 4, the middle part of horizontal base 1 is run through and is provided with hydraulic propulsion system 2, hydraulic propulsion system 2 with remove 4 fixed connection of frame, be provided with actuating system 9 on the removal frame 4, actuating system 9 is connected with transmission system 5, transmission system 5 is connected with cutter system 6 through dismantling, cutter system 6 includes full-size cutter system 6 or scaling blade disc system 8, cutter system 6 cooperatees with rock case moving system 7.
The transverse base 1 is formed by welding steel plates and sectional materials, a groove and a bolt hole for installing the guide rail are formed in the bottom surface of the transverse base, and an installation hole for installing the guide column 3 and the hydraulic propulsion system 2 and a bolt hole for fixing are formed in a side plate on the right side of the transverse base; and a mounting hole for mounting the guide post 3 is formed on the left side plate. The movable frame 4 is formed by welding a steel plate and a section bar, and a groove for mounting a sliding block (not shown) and a bolt hole are formed in the lower bottom surface of the movable frame; the corresponding positions on the upper bottom surface are also provided with a mounting seat and a fixing bolt hole for mounting the driving system 9 and the transmission system 5; a mounting hole for mounting a linear bearing (not shown) and the hydraulic propulsion system 2 and a bolt hole for fixing are arranged on the side plate on the right side; the left side plate is provided with mounting holes for mounting the linear bearing and the main bearing 506 and bolt holes for fixing. The transmission system 5 comprises a coupling 501, a speed reducer 502, a tapered roller bearing seat 503, a tapered roller bearing 504, a gear shaft 505 and a main bearing 506; the speed reducer 502 is respectively connected with the driving system 9 and the gear shaft 505 through a coupling 501; the tapered roller bearing 504 is respectively connected with a tapered roller bearing seat 503 and a gear shaft 505 through interference fit; the gear shaft 505 transmits power by meshing with the inner gear ring of the main bearing 506; the power output end of the transmission system 5, namely the main bearing 506 can be provided with a full-size cutter system 6 or a scaling cutter head system 8 for carrying out rock breaking experiments of full-size cutters or scaling cutters.
In another aspect of the present invention, the cutting tool system 6 is a full-scale cutting tool system 6.
The full-scale cutter system 6 can be driven by the transmission system 5 to rotate around the feeding direction, so that the moving direction of the cutter relative to the rock sample 706 is ensured to be tangent to the track direction, and the full-scale cutter type rotation rock breaking experiment is carried out. The full-size cutter test bed is provided with a full-size cutter, and the rock breaking working condition of the TBM hob is simulated as far as possible.
According to another scheme of the invention, the cutter system 6 is a scaling cutter head system 8, the scaling cutter head system 8 comprises a scaling cutter head 801, a plurality of groups of T-shaped grooves are formed in the scaling cutter head 801, and scaling cutters are arranged on the T-shaped grooves.
The scaling cutterhead system 8 comprises a scaling cutterhead 801 and a scaling cutter; the scaling cutterhead 801 is formed by welding steel plates and sectional materials, and a flange plate is arranged on the back of the scaling cutterhead and used for being connected with the total three-way force sensor 10 and transmitting power; six groups of T-shaped grooves are uniformly formed in the front surface of the device and matched with T-shaped bolts to adjust and fix the position of a scaling cutter on a scaling cutter head 801 so as to realize experiments of different installation radiuses and cutter intervals. The scale test bed has the advantages of short experimental period, low experimental cost and the like.
According to another scheme of the invention, six groups of T-shaped grooves are formed in the scaling cutterhead (801), and a plurality of scaling cutters are fixedly arranged on the T-shaped grooves.
In another aspect of the present invention, the cutter system 6 includes a three-way force sensor 601, one end of the three-way force sensor 601, which is connected to the cutter holder 602, is fixedly connected to two pressing strips 603, and a cutter module 604 is disposed between the two pressing strips 603.
In another aspect of the present invention, the cutter system 6 includes a three-way force sensor 601, one end of the three-way force sensor 601, which is connected to the cutter holder 602, is fixedly connected to two pressing strips 603, and a cutter module 604 is disposed between the two pressing strips 603.
The three-way force sensor 601 is fixedly connected to the tool apron 602, the cross section of the tool apron 602 is in a door shape, the two sides of the bottom of the tool apron 602 are fixedly connected with the pressing strips 603 through bolts, the tool modules 604 are arranged between the pressing strips 603 on the two sides, and the pressing strips 603 on the two sides compress the rotating shafts of the tool modules 604. The shaft end of the cutter module 604 is designed to be rectangular, and is matched with notches formed in the cutter holder 602 and the pressing strip 603 and fixed by bolts, and the bottom of the cutter holder 602 is designed to be a flange and is matched and connected with a flange at the output end of the transmission shaft by bolts to transmit power.
According to another scheme of the invention, the rock box moving system 7 comprises a longitudinal base 702, a guide rail I is arranged in the longitudinal base 702, a rock box moving block 703 is connected to the guide rail, one end of a longitudinal hydraulic cylinder group 704 is fixedly connected to the bottom of the rock box moving block 703, a rock box 705 is fixedly connected to the other end of the longitudinal hydraulic cylinder group 704, a guide rail II for moving the rock box 705 is arranged in the rock box moving block 703, a transverse hydraulic cylinder group 701 is fixedly connected to one end of the rock box moving block 703, and the transverse hydraulic cylinder group 701 penetrates through one end of the longitudinal base 702.
The rock box moving system 7 comprises a transverse hydraulic cylinder group 701, a longitudinal base 702 and a rock box moving block 703 (a longitudinal hydraulic cylinder group 704, a rock box 705, a rock sample 706 and a guide rail group 707); the longitudinal base 702 is fixed on the foundation; the transverse hydraulic cylinder group 701 is respectively connected with the longitudinal base 702 and the rock box moving block 703 through bolts to push the rock box 705 to do transverse movement; the rock box moving block 703 is installed on the longitudinal base 702 through a guide rail in a matching way and can be pushed and pulled by the transverse hydraulic cylinder group 701 to do transverse reciprocating movement; placing the rock sample 706 in the rock box 705, filling the gap with an adhesive for fixation, hoisting and inserting the rock box 705 into a groove formed in the rock box moving block 703, and fixing the rock sample with bolts; the rock box 705 is divided into a full-size cutter experiment rock box 705 and a scaled cutter experiment rock box 705, and when the full-size cutter experiment is carried out, the longitudinal hydraulic cylinder group 704 is respectively connected with the rock box 705 and a rock box moving block 703 through bolts, so that a rock sample 706 longitudinally reciprocates. The longitudinal base 702 is formed by welding steel plates and sectional materials, and a groove and a bolt hole for mounting the guide rail are formed in a front bottom plate of the longitudinal base; and a mounting hole for mounting the transverse hydraulic cylinder group 701 and a bolt hole for fixing are formed in the side plate on the right side. The transverse hydraulic cylinder group 701 is formed by welding steel plates and sectional materials, is integrally drawer-shaped, is provided with wing plates on the left side, the right side and the lower side, and is provided with threaded holes for fixing the rock box 705; bolt holes for mounting a transverse hydraulic cylinder group 701 and a longitudinal hydraulic cylinder group 704 are respectively formed in the right outer side and the lower inner side of the hydraulic cylinder; the back of the base is provided with a bolt hole for mounting a slide block (not shown).
In another embodiment of the present invention, the driving system 9 is a servo motor.
For a better description of the technical solutions and features of the present invention, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments:
the test bed driving system 9 and the transmission system 5 are fixed on the movable frame 4 through bolts, the hydraulic propulsion system 2 is respectively connected with the movable frame 4 and the transverse base 1 through bolts, and the guide post 3 is installed on the transverse base 1 and matched with a linear bearing installed on the movable frame 4 and used for guiding and bearing the reaction torque of rock breaking; the rock box movement system 7 is separately fixed on the foundation with its center coinciding with the center of the cutter system 6 and the surface of the rock sample 706 perpendicular to the cutter feed direction.
The transmission system 5 comprises a coupling 501, a speed reducer 502, a tapered roller bearing seat 503, a tapered roller bearing 504, a gear shaft 505 and a main bearing 506; the speed reducer 502 is respectively connected with the driving system 9 and the gear shaft 505 through a coupling 501 and is used for transmitting power; the tapered roller bearing 504 is respectively connected with the tapered roller bearing seat 503 and the gear shaft 505 through interference fit and is used for supporting the gear shaft 505; the gear shaft 505 is meshed with the inner gear ring of the main bearing 506 to transmit power, the gear module m is 6, and the transmission ratio is 1: 3; the outer ring of the main bearing 506 is fixed on the movable frame 4 through bolt connection, and the inner ring is connected with the full-size cutter system 6 or the scaling cutter head system 8 through bolts to carry out rock breaking experiments of the full-size cutter or the scaling cutter.
The longitudinal base 702 is formed by welding a steel plate and a section bar, and a groove and a bolt hole for installing the guide rail are formed on a front bottom plate of the longitudinal base; and a mounting hole for mounting the transverse hydraulic cylinder group 701 and a bolt hole for fixing are formed in the side plate on the right side.
Wherein, in order to make the test bench as compact as possible, the hydraulic propulsion system 2 chooses the mounting of the top flange.
Wherein, for the convenience of control, the driving system 9 selects a servo motor.
In order to make the test bed as compact as possible and simulate the TBM as much as possible, the main bearing 506 is an internal tooth type three-row cylindrical roller bearing.
Wherein, in order to make the test bench compact as much as possible, the mounting mode of top flange is selected for the horizontal hydraulic cylinder group 701.
Wherein, in order to make the test bench as compact as possible, the mounting mode of bottom flange is selected for the vertical hydraulic cylinder group 704.
In order to make the test bed as stable as possible, a mechanical locking mechanism is arranged between the rock box moving block 703 and the longitudinal base 702, and when a scaling tool rotation experiment is performed, the transverse hydraulic cylinder group 701 moves the rock sample 706 to a proper position and then is locked by the mechanical locking mechanism, so that damage to the hydraulic cylinder due to forces other than axial force applied to the transverse hydraulic cylinder group 701 is avoided.
Wherein, in order to make the test bench stable as far as possible, the design has mechanical lock structure on transmission system 5, when carrying out the broken rock experiment of linearity, locks transmission system 5 to avoid the cutter to rotate around the direction of giving, produce the influence to the experimental result.
Example one: full-size cutter type rotary rock breaking experiment
1. First, the full-scale tool system 6 is bolted to the gross three-way force sensor 10.
2. The rock sample 706 is lifted into the rock box moving system 7, the longitudinal hydraulic cylinder group 704 is connected with the rock box 705 and the rock box moving block 703 through bolts, and the elongation of the transverse hydraulic cylinder group 701 and the longitudinal hydraulic cylinder group 704 is adjusted to enable the rock sample 706 to be located at a proper position.
3. And then the hydraulic propulsion system 2 pushes the movable frame 4 to feed horizontally, so that the cutter is in contact with the rock sample 706 and penetrates into a given depth, and then the hydraulic propulsion system 2 is locked.
4. And starting the driving system 9, transmitting power to the cutter system 6 through the transmission system 5, and driving the cutter to revolve around the feeding direction to ensure that the direction of the movement speed of the cutter relative to the rock sample 706 is always tangential to the movement track of the rock sample 706.
5. Meanwhile, the movement track of the rock sample 706 is similar to an arc by adjusting the telescopic speed of the piston rods of the longitudinal hydraulic cylinder group 704 and the transverse hydraulic cylinder group 701, after the experiment is finished, the hydraulic propulsion system 2 is retracted, the cutter is separated from the rock sample 706, and the transverse hydraulic cylinder group 701 is adjusted to return the rock box 705 to the initial position.
6. And (3) adjusting another position of the rock box 705 through the longitudinal hydraulic cylinder group 704 and the transverse hydraulic cylinder group 701, adjusting the telescopic speeds of piston rods of the longitudinal hydraulic cylinder group 704 and the transverse hydraulic cylinder group 701, and repeating the steps 2, 3, 4 and 5 to simulate working conditions with different installation radiuses and different blade intervals.
Example two: full-size cutter linear rock breaking experiment
1. The full-scale tool system 6 is bolted to the gross three-way force sensor 10.
2. Hoisting the rock box 705 to the rock box moving system 7, connecting the longitudinal hydraulic cylinder group 704 with the rock box 705 and the rock box moving block 703 by bolts respectively, adjusting the elongation of the transverse hydraulic cylinder group 701 and the longitudinal hydraulic cylinder group 704 to enable the rock sample 706 to be located at a proper position, locking the longitudinal hydraulic cylinder group 704, and fixing the rock box 705 by bolts.
3. Then the cutter system 6 is rotated to the position where the cutter shaft direction is vertical to the extension direction of the piston rod of the transverse hydraulic cylinder group 701, and the transmission system 5 is locked.
4. The moving frame 4 is pushed by the hydraulic propulsion system 2 to feed horizontally, so that the cutter is in contact with the rock sample 706 and penetrates into a given depth, and then the hydraulic propulsion system 2 is locked.
5. The extension and retraction speed of the piston rods of the transverse hydraulic cylinder set 701 is adjusted to achieve different speed movements of the rock sample 706 in the horizontal direction, after one experiment, the hydraulic propulsion system 2 is retracted to separate the cutter from the rock sample 706, and the transverse hydraulic cylinder set 701 is adjusted to return the rock box 705 to the initial position.
6. In the next experiment, the longitudinal hydraulic cylinder group 704 is adjusted to move the rock sample 706 longitudinally a certain distance (i.e. the distance between the cutters), and the operations of steps 2, 3, 4 and 5 are repeated.
Example three: scaling tool rotation rock breaking experiment
1. The scaling cutterhead system 8 is fixed to the total three-way force sensor 10 through bolt connection, the position of a scaling cutter on the scaling cutterhead 801 is adjusted, and the scaling cutterhead system is fixed through T-shaped bolts.
2. The rock box 705 is hoisted into the rock box moving system 7 and fixed by bolts, and the elongation of the transverse hydraulic cylinder group 701 is adjusted, so that a rock sample (706) is positioned at a proper position, and the rock box moving block 703 is locked.
3. The drive system 9 is activated and power is transmitted to the cutter system 6 through the transmission system 5, driving the scaling impeller 801 to rotate in the feed direction.
4. And meanwhile, the horizontal feeding speed of the hydraulic propulsion system 2 for pushing the movable frame 4 is adjusted, and after one experiment, the hydraulic propulsion system 2 is retracted, so that the cutter is separated from the rock sample 706.
5. When the next experiment is carried out, the position of the cutter system 6 on the scaling cutter disc 801 is adjusted, or the horizontal feeding speed of the movable frame 4 pushed by the hydraulic propulsion system 2 is adjusted, and the operations of the steps 2, 3 and 4 are repeated, so that working conditions of different installation radiuses, different cutter intervals or different penetration degrees can be simulated.
Example four: shrinkage ratio cutter linear rock breaking experiment
1. And (3) fixing the scaling tool linear rock breaking tool rest system on the total three-way force sensor 10 by using a bolt, adjusting the position of the scaling tool system 6 on the tool rest system, and fixing by using a T-shaped bolt.
2. Then, the rock casing 705 is hoisted into the rock casing moving system 7, and the rock casing 705 is fixed with bolts.
3. Then the cutter system 6 is rotated to the position where the cutter shaft direction is vertical to the extension direction of the piston rod of the transverse hydraulic cylinder group 701, and the transmission system 5 is locked.
4. The moving frame 4 is pushed by the hydraulic propulsion system 2 to horizontally feed, meanwhile, the rock sample 706 reciprocates along the horizontal direction through the extension and contraction of the piston rods of the transverse hydraulic cylinder group 701, after an experiment, the hydraulic propulsion system 2 is retracted, a cutter is separated from the rock sample 706, and the transverse hydraulic cylinder group 701 is adjusted, so that the rock box 705 returns to the initial position.
5. When the next experiment is carried out, the position of each cutter on the cutter rest is adjusted, or the telescopic speed of the piston rod of the hydraulic propulsion system 2 is adjusted, the operations of the steps 2, 3 and 4 are repeated, and the linear rock breaking experiment with different cutter intervals or different penetration degrees can be simulated.
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 (7)
1. A TBM hob multifunctional test bed is characterized by comprising a transverse base (1) and a rock box moving system (7), a moving frame (4) is arranged in the middle of the transverse base (1), the transverse base (1) is connected with the moving frame (4) through a guide post (3), a hydraulic propulsion system (2) is arranged in the middle of the transverse base (1) in a penetrating way, the hydraulic propulsion system (2) is fixedly connected with the movable frame (4), a driving system (9) is arranged on the movable frame (4), actuating system (9) are connected with transmission system (5), transmission system (5) are connected with cutter system (6) through dismantling, and cutter system (6) include full-scale cutter system (6) or scaling blade disc system (8), cutter system (6) cooperate with rock case moving system (7).
2. The TBM hob multifunctional test stand according to claim 1, characterized in, that the cutter system (6) is a full size cutter system (6).
3. The TBM hob multifunctional test bed according to claim 1, wherein the cutter system (6) is a scaling cutter head system (8), the scaling cutter head system (8) comprises a scaling cutter head (801), a plurality of groups of T-shaped grooves are formed in the scaling cutter head (801), and scaling cutters are arranged on the T-shaped grooves.
4. The TBM hob multifunctional test bed according to claim 3, wherein six groups of T-shaped grooves are formed in the scaling cutter head (801), and a plurality of scaling cutters are fixedly arranged on the T-shaped grooves.
5. The TBM hob multifunctional test bed according to claim 1, wherein the cutter system (6) comprises a three-way force sensor (601), one end of the three-way force sensor (601) connected with the cutter base (602) is fixedly connected with two pressing strips (603), and a cutter module (604) is arranged between the two pressing strips (603).
6. The TBM hob multifunctional test bed according to claim 1, wherein the rock box moving system (7) comprises a longitudinal base (702), a guide rail I is arranged in the longitudinal base (702), a rock box moving block (703) is connected to the guide rail, one end of a longitudinal hydraulic cylinder group (704) is fixedly connected to the bottom of the rock box moving block (703), a rock box (705) is fixedly connected to the other end of the longitudinal hydraulic cylinder group (704), a guide rail II for moving the rock box (705) is arranged in the rock box moving block (703), a transverse hydraulic cylinder group (701) is fixedly connected to one end of the rock box moving block (703), and the transverse hydraulic cylinder group (701) penetrates through one end of the longitudinal base (702).
7. The TBM hob multifunctional test stand according to claim 1, characterized in that the driving system (9) is a servo motor.
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| CN112903505A (en) * | 2021-01-20 | 2021-06-04 | 中铁隧道局集团有限公司 | TBM rock breaking test device |
| CN113389561A (en) * | 2021-07-28 | 2021-09-14 | 湖南工程学院 | Hob linear rock breaking device considering confining pressure vertically and testing method |
| CN113504144A (en) * | 2021-07-29 | 2021-10-15 | 中铁工程服务有限公司 | Double-knife linear TBM rock breaking test bed |
| CN114002321A (en) * | 2021-10-18 | 2022-02-01 | 北京中煤矿山工程有限公司 | Full-size tooth-shaped hob rock breaking test device and rock damage monitoring and analyzing method in rock breaking test process |
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| CN112903505A (en) * | 2021-01-20 | 2021-06-04 | 中铁隧道局集团有限公司 | TBM rock breaking test device |
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| CN113504144B (en) * | 2021-07-29 | 2022-12-23 | 中铁工程服务有限公司 | Double-knife linear TBM rock breaking test bed |
| CN114002321A (en) * | 2021-10-18 | 2022-02-01 | 北京中煤矿山工程有限公司 | Full-size tooth-shaped hob rock breaking test device and rock damage monitoring and analyzing method in rock breaking test process |
| CN114002321B (en) * | 2021-10-18 | 2024-06-04 | 北京中煤矿山工程有限公司 | Full-size tooth-shaped hob rock breaking test device and rock damage monitoring and analyzing method in rock breaking test process |
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