CN211116001U - Hobbing cutter overall arrangement adjustable full face rock tunnel boring machine blade disc - Google Patents
Hobbing cutter overall arrangement adjustable full face rock tunnel boring machine blade disc Download PDFInfo
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- CN211116001U CN211116001U CN201922229448.1U CN201922229448U CN211116001U CN 211116001 U CN211116001 U CN 211116001U CN 201922229448 U CN201922229448 U CN 201922229448U CN 211116001 U CN211116001 U CN 211116001U
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Abstract
The utility model discloses a hobbing cutter overall arrangement adjustable full-face rock tunnel boring machine blade disc, include: the turntable structure comprises a first-stage turntable, a second-stage turntable and a third-stage turntable from inside to outside in sequence; the second-stage rotating disc is rotatably sleeved on the peripheral wall of the first-stage rotating disc, and the third-stage rotating disc is rotatably sleeved on the peripheral wall of the second-stage rotating disc; a plurality of radial guide rails are fixedly arranged on the first-stage turntable, the second-stage turntable and the third-stage turntable, and the radial guide rails are provided with locking mechanisms; the radial guide rail is movably provided with a hob seat, and a hob is fixedly arranged on the hob seat. The utility model discloses can solve the poor technical problem of current TBM geological adaptability.
Description
Technical Field
The utility model belongs to the technical field of entry driving machine cutter head structural design, in particular to hobbing cutter overall arrangement adjustable full section rock tunnel entry driving machine cutter head.
Background
A full-face rock Tunnel Boring Machine (TBM) is core equipment for excavating a rock tunnel, is very sensitive to a tunnel stratum and has poor geological adaptability. Aiming at the excavation of tunnel sections under different geological conditions, heading machines with different structures need to be used, and corresponding auxiliary equipment needs to be matched, so that the smooth development of heading work is ensured.
The cutterhead is arranged at the foremost end of the heading machine and is used as a mounting carrier of the hob to bear all loads transmitted by the cutter for rock breaking, and the rock breaking performance of the cutterhead mainly depends on main parameters (such as the diameter of the cutterhead, the thickness of the cutterhead and the structure of the cutterhead surface) of the cutterhead and the layout mode of the cutter. Around the two points, scholars establish empirical calculation formulas of cutter head parameters and cutter head structural strength through theoretical research, experimental exploration and actual engineering verification, and establish various hob layout modes such as spiral layout, random layout and the like.
Secondly, the cutter head is used as a large-scale steel structural member, the structural strength and rigidity of the cutter head and the difficulty of processing and manufacturing are also key concerns, and when the computer technology is developed, the static analysis of the cutter head structure is carried out through means such as finite element analysis and the like, so that effective conclusions that the edge cutter frame has large stress concentration, the junction of the bracket and the panel is a dangerous section and the like are obtained. Finally, when the tunneling machine breaks rocks and tunnels, the cutter head can vibrate, and the dynamic characteristic of the cutter head can directly influence the tunneling performance.
In summary, although the research on the improvement of the cutter head structure is greatly advanced, the defect of poor construction adaptability of the TBM is still not overcome.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hobbing cutter overall arrangement adjustable full section rock tunnel boring machine blade disc to solve the current TBM geological adaptability poor technical problem that the aforesaid exists.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a hobbing cutter overall arrangement adjustable full-face rock tunnel boring machine blade disc, include:
the turntable structure comprises a first-stage turntable, a second-stage turntable and a third-stage turntable from inside to outside in sequence; the second-stage rotating disc is rotatably sleeved on the peripheral wall of the first-stage rotating disc, and the third-stage rotating disc is rotatably sleeved on the peripheral wall of the second-stage rotating disc; a plurality of radial guide rails are fixedly arranged on the first-stage turntable, the second-stage turntable and the third-stage turntable, and the radial guide rails are provided with locking mechanisms; the radial guide rail is movably provided with a hob seat, and a hob is fixedly arranged on the hob seat.
The utility model discloses a further improvement lies in, the first order carousel the second level carousel with all fixedly being provided with a plurality of radial guide on the third level carousel specifically do, all fixedly being provided with a plurality of spoke structures on first order carousel, second level carousel and the third level carousel, the spoke is structural to be provided with radial guide.
The utility model has the further improvement that a plurality of arc-shaped reinforcing ribs are arranged in the open area between the adjacent spoke structures of the second-stage turntable; the arc reinforcing ribs are positioned on the same-diameter arc taking the center of the turntable structure as the circle center.
The utility model is further improved in that a first circumferential guide rail is arranged on the circumferential wall of the first-stage turntable, and the second-stage turntable is rotatably arranged on the first circumferential guide rail; a second circumferential guide rail is arranged on the outer circumferential wall of the second-stage turntable, and the third-stage turntable is rotatably arranged on the second circumferential guide rail; the first circumferential guide rail and the second circumferential guide rail are both provided with locking devices.
The utility model discloses a further improvement lies in, all is provided with self-aligning roller bearing in first circumference guide rail and the second circumference guide rail.
The utility model has the further improvement that a plurality of cutters are fixedly arranged on the first-stage turntable, the second-stage turntable and the third-stage turntable in the areas close to the first circumferential guide rail or the second circumferential guide rail; the first-stage turntable and the third-stage turntable are also fixedly provided with a plurality of hobs with fixed polar diameters.
The utility model discloses a further improvement lies in, still includes: and the hydraulic system is used for realizing the rotation of the second-stage turntable and the third-stage turntable and the movement of the hob seat.
The utility model is further improved in that a plurality of support ribs are arranged between the front face plate and the back face plate of the cutter head in the turntable structure, and the support ribs are uniformly distributed on the circular cutter head in the radial direction; and the supporting ribs between the second-stage turntable and the third-stage turntable are connected through bolts.
The utility model discloses a further improvement lies in, the cutter layout pattern of carousel structure is star overall arrangement, spiral layout pattern or random layout pattern.
Compared with the prior art, the utility model discloses following beneficial effect has:
the cutter head of the utility model, considering the adjustability of the polar angle of the hob, divides the cutter head body (turntable structure) into 3-level turntables from inside to outside in sequence, and the 3-level turntables can rotate relatively, thus realizing the adjustment of the polar angle of the hob; in consideration of adjustability of the pole diameter of the hob, radial guide rails are arranged on the turntables at all levels, and the hob can be movably arranged on the radial guide rails through the hob seat, so that the pole diameter of the hob can be adjusted; the adjustment of the cutter spacing can be realized by increasing or decreasing the number of the hob seats; the adjustment of different hob layout modes can be realized by comprehensively adjusting the polar angle and the polar diameter of the hob. The utility model provides a hobbing cutter overall arrangement adjustable type full section rock tunnel boring machine blade disc can realize the adjustment of the cutter overall arrangement parameter including hobbing cutter figure, sword interval, hobbing cutter utmost point footpath, hobbing cutter polar angle, hobbing cutter overall arrangement mode, can deal with the tunnelling of different geological conditions, has reached the dynamic balance on geological conditions and the blade disc cooperation; the utility model discloses utilize blade disc structural design's good performance, can reduce the wearing and tearing of cutter, improve TBM's work efficiency and the flexibility of construction, can effectively solve the poor problem of geology adaptability
The utility model discloses in, install the spoke in each carousel to install radial guide and locking mechanism additional on the spoke, the hob seat is installed on radial guide, realizes the position adjustment of hob seat on radial guide through hydraulic pressure mechanism, can realize the regulation of hob utmost point footpath and guarantee that the blade disc structure possesses sufficient intensity, rigidity.
The utility model discloses in, arrange circumference guide rail and locking mechanism between first, second level carousel and second, third level carousel respectively, the relative circumference gyration of carousel at all levels is the root cause that the polar angle of the relative another part cutter of part cutter changes.
The utility model discloses in, all be provided with self-aligning roller bearing inside first circumference guide rail and second circumference guide rail, can bear the radial thrust who comes from the blade disc, also can avoid guide rail department to take place to warp and the card is dead.
The utility model discloses in, the open area between the adjacent spoke of second grade carousel is equipped with the arc strengthening rib, can further guarantee that the blade disc structure possesses sufficient intensity, rigidity.
The utility model discloses in, be close to the regional installation cutter of circumference guide rail at carousel at different levels, can solve near circumference guide rail region and can't arrange the hobbing cutter so that weaken the problem of broken rock effect.
The utility model discloses in, when installing the adjustable type hobbing cutter of a plurality of utmost points footpaths, install appropriate amount stationary knife on first, the third carousel, blade disc structure dynamic instability factor when can reducing the excavation rock mass.
The utility model discloses in, be equipped with a plurality of brace rods between positive panel of blade disc and the blade disc backplate, the brace rod is at circular blade disc face radial evenly distributed, and the brace rod between second level carousel and the third level carousel is by big bolted connection, and the installation of brace rod does not influence carousel circumference gyration, can further guarantee that the blade disc structure possesses sufficient intensity, rigidity.
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 layout view of a hob layout adjustable cutter head of a full face rock tunnel boring machine according to an embodiment of the present invention;
fig. 2 is a schematic view of the overall structure of a cutter head of the full face rock tunnel boring machine with an adjustable hob layout according to the embodiment of the present invention;
fig. 3 is a schematic structural view of a hob layout adjustable cutter head of the full face rock tunnel boring machine according to the embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a cutter head of a full face rock tunnel boring machine with an adjustable hob layout according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a supporting rib of a cutter head of the full face rock tunnel boring machine with an adjustable hob layout according to the embodiment of the present invention;
in the context of figures 1 to 5 of the drawings,
1. a central region; 2. a central hob;
3. a turntable structure; 3-1, a first-stage turntable; 3-2, a second-stage turntable; 3-3, a third-stage turntable;
4. a positive hob; 5. a first circumferential guide rail;
6. a spoke structure; 6-1, radial guide rail; 6-2, a locking mechanism;
7. a cutter; 8. reinforcing ribs; 9. an edge hob; 10. a slag outlet; 11. an edge region; 12. a bearing; 13. supporting the rib plate; 14. a bolt; 15. a back panel of the cutter head.
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 to 5, the embodiment of the present invention provides a hob layout adjustable cutter head of a full face rock tunnel boring machine, including:
the rotary table structure 3 is composed of a first-stage rotary table 3-1, a second-stage rotary table 3-2 and a third-stage rotary table 3-3 from inside to outside in sequence; the second-stage rotating disc 3-2 is rotatably sleeved on the peripheral wall of the first-stage rotating disc 3-1, and the third-stage rotating disc 3-3 is rotatably sleeved on the peripheral wall of the second-stage rotating disc 3-2;
a plurality of radial guide rails 6-1 are fixedly arranged on the first-stage rotary table 3-1, the second-stage rotary table 3-2 and the third-stage rotary table 3-3, and the radial guide rails 6-1 are provided with locking mechanisms 6-2; the radial guide rail 6-1 is movably provided with a hob seat, and a hob is fixedly arranged on the hob seat.
Wherein, a central area 1 of the first-stage turntable 3-1 is provided with a central hob 2; a plurality of positive hobs 4 are arranged on the first-stage turntable 3-1 around the central hob 2. A plurality of side hobs 9 are arranged at the edge region 11 of the third-stage turntable 3-3, each hob is arranged on a cutter holder through a pair of bearings 12, and a plurality of slag outlets 10 are radially arranged on the third-stage turntable, so that rock slag passes through the slag outlets 10 and slides into a collecting hopper and a belt conveyor which are arranged on the back surface of the center of the first-stage turntable through a supporting rib plate 13.
Optionally, a plurality of radial guide rails 6-1 are fixedly arranged on the first-stage turntable 3-1, the second-stage turntable 3-2 and the third-stage turntable 3-3,
the first-stage turntable 3-1, the second-stage turntable 3-2 and the third-stage turntable 3-3 are all fixedly provided with a plurality of spoke structures 6, and the spoke structures 6 are provided with radial guide rails 6-1.
Optionally, an arc-shaped reinforcing rib 8 is arranged in an open area between adjacent spokes of the secondary turntable, and the reinforcing rib 8 is located on an arc with the same diameter and taking the cutter head panel as the center.
Optionally, a first circumferential guide rail 5 is arranged on the circumferential wall of the first-stage turntable 3-1, and the second-stage turntable 3-2 is rotatably mounted on the first circumferential guide rail 5; a second circumferential guide rail is arranged on the outer circumferential wall of the second-stage rotating disc 3-2, and the third-stage rotating disc 3-3 is rotatably arranged on the second circumferential guide rail; the first circumferential guide 5 and the second circumferential guide are both provided with locking means.
Optionally, the cutters 7 are arranged in the areas, close to the circumferential guide rails, of the turntables at all levels, so that the problem that the rock breaking effect is weakened due to the fact that hobs cannot be arranged in the areas close to the circumferential guide rails is solved; when a plurality of adjustable-diameter hobs are installed, a proper amount of fixed cutters are installed on the first-stage turntable 3-1 and the third-stage turntable 3-3, and dynamic instability factors of a cutter head structure during rock excavation are reduced.
Optionally, the method further includes: and the hydraulic system is used for realizing the rotation of the second-stage rotating disc 3-2 and the third-stage rotating disc 3-3 and the movement of the hob seat. In order to realize the relative rotation of the first-stage turntable and the second-stage turntable, a plurality of hydraulic cylinders are circumferentially arranged around the first circumferential guide rail 5 on the back surfaces of the two turntables, a cylinder body is arranged on the first-stage turntable 3-1 through a spherical hinge, a piston is arranged on the second-stage turntable 3-2 through a spherical hinge, the axis of each hydraulic cylinder is tangent to the first axial guide rail, and the relative rotation of the first-stage turntable and the second-stage turntable can be realized through the synchronous pushing of the circle of hydraulic cylinders. Similarly, in order to realize the relative rotation of the second-stage turntable and the third-stage turntable, a plurality of hydraulic cylinders are circumferentially arranged around the second circumferential guide rail on the back surfaces of the two turntables, a cylinder body is arranged on the second-stage turntable 3-2 through a spherical hinge, a piston is arranged on the third-stage turntable 3-3 through a spherical hinge, the axis of each hydraulic cylinder is tangent to the second circumferential guide rail, and the relative rotation of the second-stage turntable and the third-stage turntable can be realized through the synchronous pushing of the circle of hydraulic cylinders. In order to realize the movement of the hob seats, a hydraulic cylinder is arranged between two adjacent hob seats arranged on the same group of radial slide rails corresponding to each hob seat of the second-stage rotary table 3-2, so that the hob seats are pushed to the designated positions. Furthermore, the hydraulic cylinder and the matched system thereof are only installed and put into practical use in the shutdown finishing stage of the whole machine, and after the adjustment is finished, the hydraulic cylinder and the matched system thereof are dismantled to carry out tunneling so as to prevent rock fragments from smashing or squeezing the hydraulic cylinder. Furthermore, the relative rotation adjustment of the first-stage turntable and the second-stage turntable and the relative rotation adjustment of the second-stage turntable and the third-stage turntable are respectively carried out to prevent the mutual interference of the two actions.
Furthermore, a plurality of supporting rib plates 13 are arranged between the front face plate and the back face plate 15 of the cutter head, the supporting rib plates 13 are radially and uniformly distributed on the circular cutter head face, the supporting rib plates 13 between the second-stage rotary table 3-2 and the third-stage rotary table 3-3 are connected through bolts 14, and the installation of the supporting rib plates 13 does not influence the circumferential rotation between the rotary tables at all stages. When the circumferential position between the second-stage turntable 3-2 and the third-stage turntable 3-3 needs to be changed, the screws are detached, and the fixing bolts 14 are installed after the relative positions between the second-stage turntable 3-2 and the third-stage turntable 3-3 are determined.
The utility model discloses in, the cutter layout pattern of carousel structure is star layout pattern, other cutter layout patterns, like spiral layout pattern, random layout pattern, in the embodiment of the utility model provides an in still practical.
The utility model discloses considered the whole technical performance requirement of blade disc, the construction requirement, hobbing cutter figure, sword interval, hobbing cutter polar angle, hobbing cutter overall arrangement parameter's such as hobbing cutter layout mode adjustability to guarantee that the blade disc structure possesses sufficient intensity, rigidity.
The radius of the fixed cutter disc is 5050mm, and the requirement of the adjustable range of the cutter spacing is 60-100 mm.
Considering the adjustability of the polar angle of the hob, the cutter disc body is divided into a stage turntable structure 3 which is a first stage turntable 3-1, a second stage turntable 3-2 and a third stage turntable 3-3 from inside to outside in sequence, a circumferential guide rail and a first locking mechanism are respectively arranged between the first stage turntable and the second stage turntable and between the second stage turntable and the third stage turntable, and the relative circumferential rotation of the turntables is the root cause of the polar angle change of one part of cutters relative to the other part of cutters. In consideration of adjustability of the pole diameter, spoke structures 6 are installed in the turntables, radial guide rails 6-1 and a second locking mechanism are additionally installed on the spokes, the roller seats are installed on the radial guide rails 6-1, and position adjustment of the roller seats on the radial guide rails 6-1 is achieved through a hydraulic mechanism.
The utility model discloses an operation method of hobbing cutter overall arrangement adjustable full section rock tunnel boring machine blade disc, include:
the total hob number is adjusted by increasing or decreasing the tool holders and the hobs arranged in the radial guide rail 6-1;
the adjustment of the cutter spacing and the installation pole diameter are realized by adjusting the number of the whole hobs and the installation position of the hob seat in the radial guide rail 6-1;
the installation polar angle of the hob is adjusted by enabling the first-stage rotary table 3-1, the second-stage rotary table 3-2 and the third-stage rotary table 3-3 to rotate for a certain angle.
To sum up, the utility model discloses a full section rock tunnel boring machine blade disc of adjustable type of hobbing cutter overall arrangement and operation method thereof can realize the adjustment of cutter overall arrangement parameters such as hobbing cutter figure, sword interval, hobbing cutter polar angle. The utility model discloses an adjustable blade disc new construction of hobbing cutter overall arrangement, the blade disc integument divide into a plurality of carousel structures of taking circumferential direction guide and locking mechanism, be equipped with the spoke on the carousel, install radial guide and locking mechanism additional on the spoke, the hob seat is installed on radial guide, the effect through hydraulic pressure mechanism realizes position adjustment and the locking of hob seat on radial guide to realize the circumference gyration and the locking of each carousel through hydraulic pressure mechanism, thereby realize the work of the radial and circumference mounted position adjustment of hobbing cutter. The utility model discloses strengthened the good adaptability of various complicated geological conditions of entry driving machine blade disc structure reply by a wide margin, saved the time that the staff changed the blade disc, improved rock tunnel's tunnelling speed.
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 (9)
1. The utility model provides a hobbing cutter overall arrangement adjustable full face rock tunnel boring machine blade disc which characterized in that includes:
the turntable structure (3) comprises a first-stage turntable (3-1), a second-stage turntable (3-2) and a third-stage turntable (3-3) from inside to outside in sequence; the second-stage rotary table (3-2) is rotatably sleeved on the peripheral wall of the first-stage rotary table (3-1), and the third-stage rotary table (3-3) is rotatably sleeved on the peripheral wall of the second-stage rotary table (3-2);
a plurality of radial guide rails (6-1) are fixedly arranged on the first-stage turntable (3-1), the second-stage turntable (3-2) and the third-stage turntable (3-3), and the radial guide rails (6-1) are provided with locking mechanisms (6-2); the radial guide rail (6-1) is movably provided with a hob seat, and a hob is fixedly arranged on the hob seat.
2. The cutter head of the full face rock tunnel boring machine with the adjustable hob layout according to claim 1, characterized in that a plurality of radial guide rails (6-1) are fixedly arranged on the first-stage turntable (3-1), the second-stage turntable (3-2) and the third-stage turntable (3-3),
a plurality of spoke structures (6) are fixedly arranged on the first-stage turntable (3-1), the second-stage turntable (3-2) and the third-stage turntable (3-3), and radial guide rails (6-1) are arranged on the spoke structures (6).
3. The cutter head of the full face rock tunnel boring machine with the adjustable hob layout according to claim 2, characterized in that a plurality of arc-shaped reinforcing ribs (8) are arranged in an open area between adjacent spoke structures (6) of the second-stage turntable (3-2); the arc reinforcing ribs (8) are positioned on the same-diameter circular arc with the center of the turntable structure (3) as the center of a circle.
4. The cutterhead of the full face rock tunnel boring machine with adjustable hob layout according to claim 1, characterized in that a first circumferential guide (5) is provided on the circumferential wall of the first stage turntable (3-1), and the second stage turntable (3-2) is rotatably mounted on the first circumferential guide (5); a second circumferential guide rail is arranged on the outer circumferential wall of the second-stage rotary table (3-2), and the third-stage rotary table (3-3) is rotatably arranged on the second circumferential guide rail; the first circumferential guide rail (5) and the second circumferential guide rail are both provided with locking devices.
5. The cutter head of the full face rock tunnel boring machine with the adjustable hob layout according to claim 4, characterized in that a self-aligning roller bearing is arranged in each of the first circumferential guide rail (5) and the second circumferential guide rail.
6. The cutter head of the full face rock tunnel boring machine with the adjustable hob layout according to claim 4, characterized in that,
a plurality of cutters (7) are fixedly arranged on the first-stage turntable (3-1), the second-stage turntable (3-2) and the third-stage turntable (3-3) in the areas close to the first circumferential guide rail (5) or the second circumferential guide rail;
the first-stage rotary table (3-1) and the third-stage rotary table (3-3) are also fixedly provided with a plurality of hobs with fixed polar diameters.
7. The cutter head of a full face rock tunnel boring machine with adjustable hob layout according to claim 1, further comprising:
and the hydraulic system is used for realizing the rotation of the second-stage rotating disc (3-2) and the third-stage rotating disc (3-3) and the movement of the hob seat.
8. The cutter head of the full face rock tunnel boring machine with the adjustable hob layout according to claim 1, characterized in that in the turntable structure (3),
a plurality of supporting rib plates (13) are arranged between the cutter head front panel and the cutter head back panel (15), and the supporting rib plates (13) are uniformly distributed on the circular cutter head surface in the radial direction;
and the supporting rib plates (13) between the second-stage rotary table (3-2) and the third-stage rotary table (3-3) are connected through bolts.
9. The cutter head of the full face rock tunnel boring machine with the adjustable hob layout according to claim 1,
the tool layout mode of the turntable structure (3) is a star layout mode, a spiral layout mode or a random layout mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922229448.1U CN211116001U (en) | 2019-12-11 | 2019-12-11 | Hobbing cutter overall arrangement adjustable full face rock tunnel boring machine blade disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922229448.1U CN211116001U (en) | 2019-12-11 | 2019-12-11 | Hobbing cutter overall arrangement adjustable full face rock tunnel boring machine blade disc |
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| Publication Number | Publication Date |
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| CN211116001U true CN211116001U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922229448.1U Active CN211116001U (en) | 2019-12-11 | 2019-12-11 | Hobbing cutter overall arrangement adjustable full face rock tunnel boring machine blade disc |
Country Status (1)
| Country | Link |
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| CN (1) | CN211116001U (en) |
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2019
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