CN214251869U - Full-face rock tunnel boring machine test bed - Google Patents
Full-face rock tunnel boring machine test bed Download PDFInfo
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- CN214251869U CN214251869U CN202120187063.8U CN202120187063U CN214251869U CN 214251869 U CN214251869 U CN 214251869U CN 202120187063 U CN202120187063 U CN 202120187063U CN 214251869 U CN214251869 U CN 214251869U
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Abstract
The utility model discloses a full section rock tunnel boring machine test bench, include: a test bed frame; a slide rail, a vertical propelling device and a horizontal propelling device are fixedly arranged on the test bed rack; the fixed end of the vertical propelling device is fixedly arranged on the stand of the test bed, and the output end of the vertical propelling device is provided with a tool apron assembly and an excitation source; the tool apron assembly is used for mounting a hob, and the excitation source is used for trying to apply a vibration load, so that the simulation of rock breaking by the hob excitation source combination is realized; the fixed end of the horizontal propelling device is fixedly arranged on the rack of the test bed, and the output end of the horizontal propelling device is provided with a rock box; the rock box is slidably mounted on the slide rail. The utility model discloses can be used to verify novel broken rock mechanism, be novel full section rock tunnel boring machine blade disc development accumulation experience through the experiment.
Description
Technical Field
The utility model belongs to the technical field of mechanical design, a full section rock tunnel boring machine field is related to, in particular to full section rock tunnel boring machine test bench.
Background
The rapid development of tunnels and underground spaces promotes the progress of the shield construction technology; the full-face rock tunnel boring machine is increasingly applied to the construction of long and large tunnels due to the advantages of high boring speed, excellent quality, small influence on the surrounding environment, high automation degree and relatively high construction safety. In the face of hard rock geological conditions, the full-face rock tunnel boring machine usually has the problems of low rock breaking efficiency and serious hob abrasion, and further influences the efficiency and cost of tunnel construction. In conclusion, the development of rock tunneling equipment with strong geological adaptability becomes a problem which needs to be solved urgently in the construction of long and large tunnels.
The cutter head is a core component of rock tunnel tunneling equipment, has basic functions of breaking rocks, tunneling and discharging rock slag, and directly influences the tunneling efficiency of the equipment. The rock breaking mechanism of the traditional full-face rock tunnel boring machine is that under the continuous rolling action of a hobbing cutter, the rock below the cutting edge can form a compact core firstly, then a lateral crack is driven to be initiated from one side of the compact core, and then the lateral crack is communicated with the lateral crack of the adjacent hobbing cutter, so that the rock on the face is separated from the parent rock in the form of rock fragments. However, in the face of high-hardness geological conditions, lateral cracks between adjacent hobs cannot be smoothly communicated through a traditional rock breaking mechanism, and then the phenomena of low rock breaking efficiency, low tunneling speed and serious abrasion of the hobs are caused. To solve the above problem, a method of setting up a test stand is generally used. Taking a hob linear cutting test bed designed by Ozdemir and the like of Colorado university as a representative, domestic and foreign scholars carry out a great deal of research on a rock breaking test of a full-face rock tunnel boring machine, simulate a rock breaking process by designing a hob and a rock box to move relatively, and find a method for solving practical engineering problems in the test. In the existing research, for example: the active roller hob (ARC) system designed by Knickmeyer and Baumann (1981) found that the dynamic load of oscillation can affect the penetration of the hob by adding a high-frequency oscillator on the hob shaft; a novel Oscillating Disc Cutting (ODC) system designed by Hede and ArleHosen (2000) can crush hard rock through oscillating load at a higher tunneling speed, and the cutting force of a hob in the rock crushing process is lower.
In summary, a new test bed of the full-face rock tunnel boring machine with a linear hob impact hammer combination for rock breaking is needed urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a full section rock tunnel boring machine test bench to solve the above-mentioned one or more technical problem who exists.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a full section rock tunnel boring machine test bench, include:
the test bed frame is used as a support of the full-face rock tunnel boring machine test bed; a sliding rail, a vertical propelling device and a horizontal propelling device are fixedly arranged on the test bed rack;
the fixed end of the vertical propelling device is fixedly arranged on the test bed rack, and the output end of the vertical propelling device is provided with a tool apron assembly and an excitation source; the tool apron assembly is used for mounting a hob, and the excitation source is used for applying a vibration load in a trial mode to realize simulation of rock breaking of the hob excitation source combination;
the fixed end of the horizontal propelling device is fixedly arranged on the test bed rack, and the output end of the horizontal propelling device is provided with a rock box; the rock box is slidably mounted on the slide rail.
Further, the test stand frame includes: a bottom plate, a top plate and a column; the bottom plate is fixedly arranged on a foundation or a base; the two ends of the upright post are respectively detachably and fixedly arranged on the bottom plate and the top plate through flanges.
Further, the vertical pushing device comprises: a first hydraulic cylinder; the first hydraulic cylinder is vertically arranged; the first hydraulic cylinder comprises a first cylinder body and a first piston rod; the first cylinder body is fixedly arranged on the top plate, and an intermediate plate is fixedly arranged on the first piston rod.
Furthermore, the middle plate is provided with a sleeve mounting hole, and the sleeve is slidably sleeved on the upright post.
Furthermore, a transition plate mounting hole is formed in the middle plate, and a transition plate is mounted through a bolt and a damping spring; the middle plate is provided with an excitation hammer through hole; and a cutter holder mounting groove is formed in the middle plate.
Further, the excitation source includes: the device comprises a motor, a cam, a connecting rod and an excitation hammer; the motor is fixedly arranged on the transition plate; the output end of the motor is provided with the cam through a coupler; two ends of the connecting rod are respectively hinged to the cam and the vibration exciter; the vibration exciter penetrates through the vibration exciter through hole and is connected with the transition plate through a spring.
Further, the tool holder assembly includes: a tool apron and a hob shaft;
the tool apron is fixedly arranged in the tool apron mounting groove; a pair of tapered roller bearings is reversely arranged in the tool apron; the inner rings of the pair of tapered roller bearings are provided with a roller shaft; the section of the shaft section of the hob shaft, which is matched with the tool rest, is square.
Further, still include: a disc cutter attached to outer rings of the pair of tapered roller bearings; and bearing end covers with sealing rings are arranged on two end faces of the disc cutter.
Further, the tool apron mounting groove is a T-shaped sliding groove.
Further, the horizontal pushing device comprises: a second hydraulic cylinder; the second hydraulic cylinder is horizontally arranged; the second hydraulic cylinder comprises a second cylinder body and a second piston rod; the second cylinder body is fixedly arranged on the bottom plate, and a rock box is fixedly arranged on the second piston rod.
Compared with the prior art, the utility model discloses following beneficial effect has:
the test bed of the utility model can realize the linear motion of the hob in the vertical direction and the propulsion motion of the rock box in the horizontal direction, and simulate the rock breaking process of the hob by making the relative motion between the hob and the rock box; an excitation source is additionally arranged on the test bed to apply vibration load, so that the rock breaking mode of the hob and impact hammer combination is realized; the experiment table can be used for verifying a novel rock breaking mechanism, and developing and accumulating experiences for a novel cutter head of the full-face rock tunnel boring machine through experiments.
In the utility model, a transverse hydraulic cylinder which provides the rock box to do linear motion in the horizontal direction and a vertical hydraulic cylinder which pushes the middle plate to do linear motion in the vertical direction are arranged; in the horizontal direction, a cylinder body of the transverse hydraulic cylinder is connected with a fixed flange on the bottom plate, one end face of the rock box is connected with a piston rod of the transverse hydraulic cylinder through a flange, so that power generated by the hydraulic cylinder can be transmitted to the rock box, and a sliding rail is arranged between the bottom face of the rock box and the bottom plate to provide a guiding effect for the motion of the rock box; in the vertical direction, a pair of synchronous double-acting hydraulic cylinders is adopted, the cylinder bodies of the vertical hydraulic cylinders are fixed on the top plate, and piston rods of the vertical hydraulic cylinders are connected with the intermediate plate through flanges to provide power for the intermediate plate to move in the vertical direction.
The utility model discloses in, the motor is fixed on crossing the cab apron, and the motor passes through the shaft coupling and gives the cam with power transmission, and later the cam gives the exciting vibration hammer with power transmission again to the circular motion of accomplishing the motor changes the reciprocating linear motion's of exciting vibration hammer process into. The shock hammer forms a sliding pair through a through hole in the transition plate, and is connected with the transition plate through a spring, so that the shock hammer is always in contact with the cam, and shock load in a shock mode is realized.
The experiment table can simulate a real rock breaking process and obtain a result with higher reliability within a certain error range; in addition, compare traditional full-scale hobbing cutter straight line cutting test bench, the utility model discloses the test bench adopts the hobbing cutter of reducing size, and the overall dimension of test bench is little, the test bench with low costs, realize that the difficulty is low, and has multiple functions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic front structural view of a full-face rock tunnel boring machine test bed for breaking rock by combining a linear hob impact hammer according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a full face rock tunnel boring machine test bed for breaking rock by a combination of linear hob impact hammers according to an embodiment of the present invention;
FIG. 3 is a schematic view of the disc cutter cooperating with the tool post in the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an intermediate plate according to an embodiment of the present invention;
fig. 5 is a simplified schematic diagram of the composition and principle of an excitation source in an embodiment of the invention;
fig. 6 is a schematic structural diagram of a transition plate in an embodiment of the present invention;
in fig. 1 to 6, 1, a first hydraulic cylinder; 2. a flange; 3. a first piston rod; 4. a middle plate; 5. a tool apron; 6. a disc cutter; 7. a base plate; 8. a motor; 9. a transition plate; 10. a vibration hammer is excited; 11. a sleeve; 12. a rock box; 13. a second piston rod; 14. a second hydraulic cylinder; 15. anchor bolts; 16. a bearing end cap; 17. a column; 18. a top plate; 19. a damping spring; 20. a rock plate; 21. a slide rail; 22. a roll shaft; 23. a tapered roller bearing; 24. a transition plate mounting hole; 25. a through hole of the exciting hammer; 26. a tool apron mounting groove; 27. a cam; 28. a connecting rod; 30. a coupling; 31. and a motor mounting hole.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following description, with reference to the drawings in the embodiments of the present invention, clearly and completely describes the technical solution in the embodiments of the present invention; obviously, the described embodiments are some of the embodiments of the present invention. Based on the embodiments disclosed in the present invention, other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the utility model discloses a full section rock tunnel boring machine test bench of broken rock of straight line hobbing cutter percussion hammer combination includes: the test bed comprises a test bed frame, a propelling device, an excitation source, a cutter holder assembly and a rock box rock plate.
In the embodiment of the utility model provides an in, the test bench frame comprises bottom plate 7, roof 18 and four stands 17. The bottom plate 7 is fixed on the ground through anchor bolts 15, and the bottom plate 7, the upright post 17 and the top plate 18 are connected into a whole through the flange 2 fixed by the upright post 17.
In the embodiment of the present invention, the propulsion device is a power source for the movement of the hob impact hammer (the vibration exciter 10) and the rock box 12. A second hydraulic cylinder 14 in the horizontal direction drives the rock box 12 to move, the cylinder body of the second hydraulic cylinder 14 is fixed on the bottom plate 7 through a flange, and a second piston rod 13 of the second hydraulic cylinder 14 is connected with the rock box 12 through a flange; in the vertical direction, the hob and the exciting hammer 10 are installed on the middle plate 4, the first piston rod 3 penetrates through a through hole in the top plate 18 and is connected with the middle plate 4 through a flange, and the cylinder body of the first hydraulic cylinder 1 is fixed on the top plate 18, so that the vertically arranged first hydraulic cylinder 1 can drive the motion of the hob exciting hammer.
Please refer to fig. 2, in the embodiment of the present invention, the rock plate 20 in the rock box 12 is used for fixing the rock sample and applying a certain confining pressure to the rock, the rock box 12 is similar to the rock sample structure, except that the length and the width of the rock box 12 are larger than the rock sample, the rock plate 20 is added between the rock sample and the rock box 12, and the bolt can extrude the rock plate 20 by processing the threaded hole on the rock box 12, thereby applying a certain confining pressure to the rock.
Referring to fig. 3, in the embodiment of the present invention, the cutter holder assembly is composed of a disc cutter 6, a holder 5, a roller shaft 22, a bearing, and a bearing end cover 16. By selecting a pair of reversely mounted tapered roller bearings 23, the outer ring of which is fitted with the disc cutter 6 in a base shaft system, and the inner ring is fitted with the cutter shaft 22 in a base hole system, the disc cutter 6 is mounted on the cutter shaft 22, and a bearing end cover 16 is provided on the end face of the disc cutter 6 to restrict axial play of the cutter. The shaft section of the hob shaft 22 matched with the tool apron 5 is in a square section, and is matched with a corresponding square groove on the tool apron 5, and threads are machined on the shaft sections at two ends of the hob shaft 22 and matched with nuts, so that the hob is tightly pressed on the tool apron 5. The holder 5 is mounted on the runner of the intermediate plate 4, so that the position of the disc cutter 6 on the intermediate plate 4 can be adjusted in the direction of the runner.
Referring to fig. 4 to 6, in the embodiment of the present invention, the excitation source is composed of a motor 8, a transition plate 9, a damping spring 19, a transmission shaft, a shaft coupling 30, and an excitation hammer 10. The motor 8 is fixedly arranged on the transition plate 9 through a motor mounting hole 31, the motor 8 transmits power to the cam 27 through a coupler 30, and the cam 27 and the vibration hammer 10 form a cam pair, so that the rotary motion of the motor 8 is converted into the linear reciprocating motion of the vibration hammer 10. The excitation source is arranged on the transition plate 9, and the transition plate 9 is fixed on the intermediate plate 4 through bolts and a damping spring 19.
The utility model provides a full section rock tunnel boring machine test bench of broken rock of sharp hobbing cutter jump bit combination, to present tunnel engineering in actual, meet the broken rock inefficiency of hard rock, the serious phenomenon of cutter wearing and tearing especially provides a new hobbing cutter rock breaking theory, for this theory of verification, specially proposes the utility model discloses a rock breaking machine test bench of straight line hobbing cutter jump bit combination is broken rock. The experiment table can simulate a real rock breaking process, and a result with higher reliability can be obtained within a certain error range; in addition, compare traditional full-size hobbing cutter straight line cutting test bench, the structure size of this test bench is less, realize easily, the cost is lower, and have multiple functions. Through accomplishing corresponding experiment, can provide technical help for the research and development accumulation experience of neotype full-face rock tunnel boring machine, and then solve the technological problem that appears in the current tunnel construction process. The utility model discloses also can be simultaneously to rock strength and rock mass structure parameter, hobbing cutter and percussion hammer's overall arrangement mode, percussion hammer shape, percussion hammer cutting edge contained angle, percussion hammer and face contained angle, a great deal of parameters such as penetration are visited the influence law of full section rock tunnel boring machine rock breaking mechanism, cutting coefficient, optimum sword interknife distance between the hobbing cutter, tunnelling efficiency and specific energy consumption etc. and are explored, are novel full section rock tunnel boring machine blade disc development accumulation experience through the experiment.
The utility model discloses a further embodiment, in the tunnel construction process, current full face rock tunnel boring machine is because of being adapted to the rock below the medium hardness, and in the face of hard rock geological conditions, the phenomenon that broken rock inefficiency, cutter wearing and tearing are serious can appear. In order to solve the technical problem of the engineering, a method for establishing a test bed is adopted to verify whether a new rock breaking mechanism, namely vibration impact rock breaking, has more remarkable advantages compared with the traditional hob rolling rock breaking, and the test bed of the full-face rock tunnel boring machine for breaking rock by combining a linear hob impact hammer is designed. Current rock tunnel boring machine is under the higher condition of the especially rock hardness of work progress, and the tunnelling inefficiency appears in the rock tunnel boring machine, and the serious phenomenon of hobbing cutter wearing and tearing, through the utility model provides a full-face rock tunnel boring machine test bench of broken rock of sharp hobbing cutter jump bit combination can verify the broken rock mechanism of new broken rock-vibration impact and break the rock, adopts the method of establishing the test bench, improves at current rock tunnel boring machine test bench, explores the method of solving the technological problem that meets in the engineering reality in the experiment. The test bed mainly comprises five parts, namely a test bed frame, a propelling device, vibration excitation, a cutter seat and a rock box and rock plates.
As shown in fig. 1 and 2, the frame of the test bed mainly comprises a bottom plate 7, a top plate 18 and four upright posts 17; the bottom plate 7 is fixed to the ground by anchor bolts 15. The two ends of the upright post 17 are respectively connected with the top plate 18 and the bottom plate 7 by the flanges 2 fixed by the upright post 17 to form a frame of the test bed.
As shown in fig. 1 and 2, the test bed comprises two sets of propulsion devices, namely a transverse hydraulic cylinder for providing the rock box 12 to do linear motion in the horizontal direction and a vertical hydraulic cylinder for pushing the middle plate 4 to do linear motion in the vertical direction. In the horizontal direction, the number of the hydraulic cylinders is one, the cylinder body of the transverse hydraulic cylinder is connected with a fixed flange on the bottom plate 7, one end face of the rock box 12 is connected with a piston rod of the transverse hydraulic cylinder through a flange, so that power generated by the hydraulic cylinder can be transmitted to the rock box 12, and a sliding rail 21 is arranged between the bottom face of the rock box 12 and the bottom plate 7 to provide a guiding effect for the motion of the rock box 12; in the vertical direction, a pair of synchronous double-acting hydraulic cylinders is adopted, the cylinder bodies of the vertical hydraulic cylinders are fixed on the top plate 18, and piston rods of the vertical hydraulic cylinders are connected with the middle plate 4 through flanges to provide power for the middle plate 4 to move in the vertical direction.
Fig. 3 shows the assembly of the disc cutter 6 with the holder 5, as shown in fig. 3. A pair of reversely-installed tapered roller bearings 23 are used, the outer rings of the bearings are matched with the disc cutter 6 in a base shaft mode, the inner rings of the bearings are matched with the cutter shaft 22 in a base hole mode, and therefore matching of the disc cutter 6 and the cutter shaft 22 is achieved, bearing end covers 16 with sealing rings are installed on two end faces of the disc cutter 6, movement of the disc cutter 6 in the axis direction of the cutter shaft 22 can be limited, a closed space can be formed, and then lubricant is added to the bearings to reduce abrasion of the bearings. The section of the shaft section of the hob shaft 22 matched with the tool rest is square, the circumferential movement of the hob shaft 22 can be limited by processing a corresponding C-shaped groove on the tool rest, threads are processed at two ends of the hob shaft 22, and the hob shaft 22 is finally fixed on the tool rest 5, namely the disc cutter 6 is fixed on the tool rest 5 by matching with a nut so that the pressure provided by the nut increases the friction force between a shaft shoulder tool rest and a nut tool rest.
As shown in fig. 4, fig. 4 is a schematic structural diagram of the intermediate plate 4, and mounting holes for fixing various parts are formed in the intermediate plate 4. Bolt holes for fixing the anti-overturning sleeve 11 are processed at four positions of the middle plate 4 with chamfers, and the anti-overturning sleeve 11 is in clearance fit with four upright posts 17 of the test bed frame to provide a guiding function for the linear motion of the middle plate 4 and also prevent the middle plate 4 from overturning. The intermediate plate 4 is connected with a piston rod of the vertical hydraulic cylinder through a flange, so that the power of the hydraulic cylinder is transmitted to the intermediate plate 4. The intermediate plate 4 is provided with a transition plate mounting hole 24, the intermediate plate 4 is fixed on the intermediate plate 4 by sleeving a damping spring 19 with a bolt, and the damping spring 19 is used for preventing vibration generated by an excitation source from being transmitted to the whole test bed, so that the experimental result is influenced. The hammer through-hole 25 of the intermediate plate 4 applies a vibration load to the rock surface in order to allow the hammer 10 to pass therethrough. The T-shaped chute on the middle plate 4 is a cutter holder mounting groove 26, the cutter holder 5 can be fixed on the middle plate 4 by bolts, the position of the hob relative to the rock can be conveniently adjusted by the fixing mode, and the adjustment of the experimental parameter of the cutter setting distance in the experiment is realized.
The principle of the vibration exciter and the installation of the vibration exciter are understood by referring to fig. 5 and 6, and it can be understood from the content contained in the figures that the motor 8 is fixed on the transition plate 9, the motor 8 transmits power to the cam 27 through the coupling 30, and then the cam 27 transmits the power to the vibration hammer 10 through the connecting rod 28, so as to complete the process of converting the circular motion of the motor 8 into the reciprocating linear motion of the vibration hammer 10. The vibration hammer 10 forms a sliding pair with a through hole on the transition plate 9, and the vibration hammer 10 is connected with the transition plate 9 through a spring, so that the vibration hammer 10 is always in contact with the cam 27, and the impact load in a vibration mode is realized.
The utility model relates to a full section rock tunnel boring machine test bench of broken rock of straight line hobbing cutter jump bit combination carries out corresponding improvement to the test bench on the basis of traditional rock tunnel boring machine-hobbing cutter straight line cutting test bench to accomplish the design of the full section rock tunnel boring machine test bench of broken rock of hobbing cutter jump bit combination. The test bed can not only complete the research on the traditional hob rock breaking mechanism, but also probe a new rock breaking mechanism, namely vibration impact rock breaking. The test bed has the advantages of small volume, low cost and simple structure, and can obtain a test result with relatively high reliability. Accumulated experience is manufactured through the design of the experiment table, help is provided for the research and development of the novel full-face rock tunnel boring machine, and the technical problem in the existing engineering practice is finally solved.
In summary, on the basis of the theoretical basis of the TBM cutter head for assisting in breaking rock by vibration impact and the design and arrangement method thereof, which are proposed by Gunn et al in Chinese patent application No. CN201810629151.1, the test bed of the full-face rock tunnel boring machine for breaking rock by combining the linear hob impact hammer is designed by referring to the hob linear cutting test bed designed by Ozdemir et al. Aiming at the problems that in the existing tunnel construction process, a full-face rock tunnel boring machine cannot adapt to work under a hard rock geological condition, so that the rock breaking efficiency is low, and the hob is seriously abraded. In order to solve the problem, a novel rock breaking mechanism, namely vibration impact rock breaking, is specially provided, and in order to verify the feasibility of the theory, a design scheme of a full-face rock tunnel boring machine test bed for breaking rock by combining a linear hob impact hammer is provided. The test bed can realize the linear motion of the hob in the vertical direction and the propelling motion of the rock box in the horizontal direction, and simulate the rock breaking process of the hob by enabling the relative motion between the hob and the rock box. An excitation source is additionally arranged on the test bed to apply vibration load, and then the mode of breaking rock by combining the hob and the impact hammer is realized. Because the test bed adopts the hobbing cutter of reducing size, so the overall dimension of test bed is little, the cost of test bed is low, realize the degree of difficulty low. The experiment table can be used for verifying a novel rock breaking mechanism, and can also be used for exploring the rock breaking mechanism, the cutting coefficient, the optimal inter-cutter distance between the hobs, the tunneling efficiency, the influence rule of the specific energy consumption and the like of the full-face rock tunnel boring machine according to a plurality of parameters such as rock strength, rock mass structural parameters, the arrangement mode of the hob and the impact hammer, the shape of the impact hammer, the included angle of the cutting edge of the impact hammer, the included angle of the impact hammer and the face, the penetration degree and the like.
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify or equally replace the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a full face rock tunnel boring machine test bench which characterized in that includes:
the test bed frame is used as a support of the full-face rock tunnel boring machine test bed; a slide rail (21), a vertical propelling device and a horizontal propelling device are fixedly arranged on the test bed rack;
the fixed end of the vertical propelling device is fixedly arranged on the test bed rack, and the output end of the vertical propelling device is provided with a tool apron assembly and an excitation source; the tool apron assembly is used for mounting a hob, and the excitation source is used for applying a vibration load in a trial mode to realize simulation of rock breaking of the hob excitation source combination;
the fixed end of the horizontal propelling device is fixedly arranged on the test bed rack, and the output end of the horizontal propelling device is provided with a rock box (12); the rock box (12) is slidably mounted to the slide rail (21).
2. A full face rock tunnel boring machine test rig according to claim 1, wherein the test rig frame includes: a bottom plate (7), a top plate (18) and a column (17);
the bottom plate (7) is fixedly arranged on a foundation or a base;
two ends of the upright post (17) are respectively and fixedly arranged on the bottom plate (7) and the top plate (18) in a detachable way through flanges (2).
3. A full face rock tunnel boring machine test rig according to claim 2, wherein the vertical propulsion means comprises: a first hydraulic cylinder (1);
the first hydraulic cylinder (1) is vertically arranged;
the first hydraulic cylinder (1) comprises a first cylinder body and a first piston rod (3); the first cylinder body is fixedly arranged on the top plate (18), and an intermediate plate (4) is fixedly arranged on the first piston rod (3).
4. A full face rock tunnel boring machine test bed according to claim 3, characterised in that the intermediate plate (4) is provided with a sleeve mounting hole in which a sleeve (11) is mounted; the sleeve (11) is slidably sleeved on the upright post (17).
5. A full face rock tunnel boring machine test bench according to claim 3, characterized in that the intermediate plate (4) is provided with a transition plate mounting hole (24) and the transition plate (9) is mounted through a bolt and a damping spring (19);
the middle plate (4) is provided with an excitation hammer through hole (25);
and a cutter holder mounting groove (26) is formed in the middle plate (4).
6. A full face rock tunnel boring machine test rig according to claim 5, wherein the excitation source comprises: the vibration exciter comprises a motor (8), a cam (27), a connecting rod (28) and a vibration exciter (10);
the motor (8) is fixedly arranged on the transition plate (9); the output end of the motor (8) is provided with the cam (27) through a coupling (30); two ends of the connecting rod (28) are respectively hinged to the cam (27) and the vibration exciter (10);
the vibration hammer (10) penetrates through the vibration hammer through hole (25) and is connected with the transition plate (9) through a spring.
7. A full face rock tunnel boring machine test rig according to claim 5, wherein the tool holder assembly includes: a tool apron (5) and a hob shaft (22);
the tool apron (5) is fixedly arranged in the tool apron mounting groove (26); a pair of tapered roller bearings (23) are reversely arranged in the tool apron (5); the inner rings of the pair of tapered roller bearings (23) are provided with a roller shaft (22); the cross section of the shaft section of the roller shaft (22) matched with the tool apron (5) is square.
8. A full face rock tunnel boring machine test stand according to claim 7, further comprising:
a disc cutter (6), the disc cutter (6) being mounted to the outer ring of the pair of tapered roller bearings (23); and bearing end covers (16) with sealing rings are arranged on two end faces of the disc cutter (6).
9. A full face rock tunnel boring machine test bench according to claim 7, characterised in that the holder mounting slot (26) is a "T" shaped chute.
10. A full face rock tunnel boring machine test rig according to claim 2, wherein the horizontal propulsion means comprises: a second hydraulic cylinder (14); the second hydraulic cylinder (14) is horizontally arranged; the second hydraulic cylinder (14) comprises a second cylinder body and a second piston rod (13); the second cylinder body is fixedly arranged on the bottom plate (7), and a rock box (12) is fixedly arranged on the second piston rod (13).
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| CN202120187063.8U CN214251869U (en) | 2021-01-22 | 2021-01-22 | Full-face rock tunnel boring machine test bed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114563151A (en) * | 2022-01-25 | 2022-05-31 | 中铁工程装备集团技术服务有限公司 | Full-face tunnel boring machine cutter abnormal vibration static detection test bed and method |
-
2021
- 2021-01-22 CN CN202120187063.8U patent/CN214251869U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114563151A (en) * | 2022-01-25 | 2022-05-31 | 中铁工程装备集团技术服务有限公司 | Full-face tunnel boring machine cutter abnormal vibration static detection test bed and method |
| CN114563151B (en) * | 2022-01-25 | 2024-04-23 | 中铁工程装备集团技术服务有限公司 | Full-face tunnel boring machine cutter abnormal vibration static detection test bed and method |
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