CN217681746U - Rectangle cutting blade disc for tunnel construction - Google Patents
Rectangle cutting blade disc for tunnel construction Download PDFInfo
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- CN217681746U CN217681746U CN202121555011.8U CN202121555011U CN217681746U CN 217681746 U CN217681746 U CN 217681746U CN 202121555011 U CN202121555011 U CN 202121555011U CN 217681746 U CN217681746 U CN 217681746U
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Abstract
The utility model discloses a rectangular cutting cutter head for tunnel construction, which comprises a transmission case, a rotating shaft, a first cutter head and a second cutter head; the second cutter head is matched and connected with the first cutter head through a rotating shaft, the transmission case is in driving connection with the second cutter head, revolution can be realized through the transmission case, and cutting pretreatment can be carried out on a region where negative cutting occurs; the first cutter disc is eccentrically arranged with the rotating shaft, and the transmission case is in driving connection with the first cutter disc; the first cutter head can revolve and rotate simultaneously with the rotating shaft through the transmission case; when the ratio of revolution and rotation speeds of the first cutter head is 1-4 and the ratio of the radius of the first cutter head to the eccentricity of the cutter head shaft is 7-9, the requirement of the first cutter head for cutting the rectangular section can be met, and the technical problem that only the circular section can be cut in the prior art is thoroughly solved.
Description
Technical Field
The utility model relates to a tunnel construction technical field, concretely relates to rectangle cutting blade disc for tunnel.
Background
In the existing tunnel construction tunnel, most of the adopted cutting shapes are circular cutting. TBM, shield mechanism, pipe push bench etc. are all circular cutting tunnelling, and the tunnel shape that forms is circular, but in tunnel in-service use, this kind of circular tunnel most all with the in-service use requirement less accord with, some still must fill or repair the shape and make it become the rectangle tunnel and satisfy the operation requirement, consequently need satisfy the operation requirement in rectangle tunnel sometimes, need carry out the secondary to the tunnel shape of having cut and repair the shape, make tunnel shape unanimous with tunnel in-service use.
Therefore, how to enable the roadway which is dug out once to be approximately consistent with the use requirement can be seen, and the work efficiency is greatly improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a technical problem to current tunnel efficiency of construction low, the utility model aims to provide a rectangle cutting blade disc for tunnel can carry out revolution and rotation through eccentric settings and blade disc between axis of rotation and the blade disc, and the rectangle tunnel that can once be hit out is approximately unanimous with the operation requirement, has overcome the problem that prior art exists well.
In order to achieve the purpose, the utility model provides a rectangular cutting cutter head for tunnel, which comprises a transmission case, a rotating shaft and a first cutter head; the first cutter disc and the rotating shaft are eccentrically arranged; the transmission box is in driving connection with the first cutter head; the first cutter head can revolve and rotate simultaneously with the rotating shaft through the transmission case; when the ratio of revolution to rotation speed of the first cutter disc is 1-4 and the ratio of the radius of the first cutter disc to the eccentricity of the cutter disc shaft is 7-9, the requirement of the first cutter disc for cutting the rectangular section can be met.
Further, the transmission case comprises a sun gear, a planet gear and an inner gear ring; the sun wheel is positioned in the center, the planet wheel is positioned between the sun wheel and the inner gear ring, the inner gear ring is fixed on the first side, and the sun wheel is arranged on the second side; the second side of the planet wheel is meshed with the sun wheel, the first side of the planet wheel is meshed with the inner gear ring, when the sun wheel rotates, the planet wheel is driven to rotate, and the planet wheel also rotates in the process of revolving around the sun wheel.
Furthermore, the first cutter disc is connected with a main shaft of the planet wheel into a whole, so that the first cutter disc rotates along with the planet wheel in the transmission case and rotates around the main shaft of the sun wheel, and rotation and revolution are achieved.
Furthermore, the first cutter head comprises a central ring, a plurality of trimming relieved teeth, a plurality of first cutter handles and a plurality of fixing plates; the central ring is arranged on the rotating shaft; the first cutter handles are distributed on the circumference taking the central ring as the center at equal intervals; the fixing plates are respectively arranged at one ends of the first cutter handles, which are far away from the central ring; the plurality of rectangular shape-modifying relieved teeth are respectively arranged on the fixed plate.
Further, the plurality of profile relieved teeth comprise edge scraper teeth and vertical scraper teeth; the edge scraper teeth and the vertical scraper teeth are respectively and uniformly distributed and fixed on the fixing plate.
Further, the rectangular cutting cutterhead for the tunnel further comprises a second cutterhead; the second cutter head is arranged in front of the first cutter head and is in matched connection with the first cutter head through a rotating shaft, and cutting pretreatment can be performed on an area where negative cutting occurs.
Furthermore, the second cutter head is connected with a main shaft of a sun gear in the transmission case, and the second cutter head and the sun gear rotate together around the main shaft of the sun gear.
Furthermore, the second cutter head comprises a central cover plate, a handle plate, a plurality of second cutter handles, a plurality of cutting teeth and a central cutter; the central cover plate is arranged on the handle plate; the plurality of second tool handles are distributed on the circumference taking the central cover plate as the center at equal intervals and are arranged on the handle plate; the center cutter is arranged on the center cover plate and is integrally formed with the center cover plate; the plurality of cutting teeth are distributed on the plurality of second tool handles respectively.
Further, the central cover plate is a structure formed by connecting a circular plate and a rectangular plate.
Further, the center knife is composed of three small blades; one part of the small blades are distributed on the rectangular plate, the other part of the small blades are distributed on the circular plate, and the other two small blades are distributed on the circular plate.
The utility model provides a rectangle cutting blade disc for tunnel can carry out revolution and rotation through eccentric settings and blade disc between axis of rotation and the blade disc, satisfies certain ratio when blade disc revolution and rotation, and the requirement of cutting rectangular cross section can be reached after blade disc radius and the ratio of eccentricity satisfy certain ratio simultaneously for the tunnel shape to having cut need not carry out the secondary and repaiies the shape, has improved the efficiency of construction greatly.
Drawings
The invention is further described with reference to the following drawings and detailed description.
FIG. 1 is a schematic view of the present rectangular cutter head for driving cutting;
FIG. 2 is a schematic view of the overall assembly structure of the rectangular cutting cutterhead;
FIG. 3 is a sectional view of the overall assembly structure of the rectangular cutter head;
FIG. 4 is a schematic view of the rear cutterhead structure of the rectangular cutting cutterhead;
FIG. 5 is a schematic view showing the variation curve of the cutting track shape of the rectangular cutting cutterhead along with the value of R1/R2;
fig. 6 is a schematic structural view of the front cutterhead of the rectangular cutting cutterhead.
The following are part numbers in the drawings:
1. the front cutter head 2, the rear cutter head 3, the rotating shaft 4, the transmission case 101, the central cover plate 102, the second cutter handle 103, the central cutter 104, the cutting pick 105, the handle plate 201, the central ring 202, the first cutter handle 203, the fixing plate 204, the rear cutter head scraping teeth 205, the edge scraping teeth 206 and the vertical scraping teeth
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Most of cutting shapes of the existing tunnel roadway cutting device are round cutting, but most of the round roadways are not in line with actual use requirements, so that secondary shape trimming needs to be carried out on the cut roadways, and therefore the working efficiency is greatly reduced.
Therefore, the utility model provides a rectangle cutting blade disc, its accessible rectangle cutting blade disc combination or rectangle cutting blade disc and circular cutting blade disc combination form the tunnel of the total rectangle cutting shape of arbitrary size, can make the tunnel of once beating out for being approximately unanimous with the operation requirement, have improved the efficiency of construction greatly.
Referring to fig. 1-3, the rectangular cutting cutterhead includes a front cutterhead 1, a rear cutterhead 2, a rotating shaft 3 and a transmission case 4; wherein, the rotating shaft passes through the rear cutter head 2 and is connected with the front cutter head 1 through a shaft 3; the transmission case 4 is respectively connected with the rear cutter head 2 and the front cutter head 1 through a shaft sleeve and a flat key.
The transmission case 4 comprises a sun wheel, a planet wheel and an inner gear ring, the sun wheel is located at the center, the planet wheel is located between the sun wheel and the inner gear ring, the inner gear ring is fixed at the outer side, the inner side of the planet wheel is meshed with the sun wheel, the outer side of the planet wheel is meshed with the inner gear ring, when the sun wheel rotates, the planet wheel is driven to rotate, and the planet wheel also rotates in the revolution process around the sun wheel.
The sun wheel extends out of the rotating shaft and is connected with the front cutter head 1 through a key and a bolt, so that the front cutter head 1 and the sun wheel rotate synchronously, the planet wheel and the rear cutter head 2 are integrated through a bolt or a welding mode, and therefore the rear cutter head 2 and the planet wheel revolve and rotate synchronously.
Furthermore, the rear cutter head 2 is used for cutting the rectangle of the tunnel and the roadway, and the rear cutter head 2 and the rotating shaft 3 are eccentrically arranged; the rotating center of the rear cutter head 2 is provided with a hole, and the rotating shaft 4 penetrates through the rear cutter head 2 through the hole to be connected with the front cutter head 1. The rear cutter head 2 is connected with the planet wheel through bolts or welding, and the rear cutter head 2 correspondingly rotates and revolves along with the planet wheel in the process of rotating and revolving around the sun wheel. The structure of the cutter head is matched, and the speed ratio of the sun wheel to the planet wheel is adjusted, so that cutting of a rectangular section can be realized.
Referring to fig. 4, the rear cutter head 2 comprises a central ring 201 and a plurality of first cutter handles 202; the center ring 201 is disposed on the rotating shaft 3; a number of first shanks 202 are distributed over the circumference of the central ring 201.
In the scheme, three first tool shanks 202 are adopted and distributed on a 360-degree circumference taking a center ring 201 as a center; wherein, the included angle between two adjacent first knife handles 202 is 120 degrees.
The number of the first tool shanks 202 is at least two, and the specific number thereof is not limited and can be determined according to actual conditions.
Each fixing plate 203 is provided with a rear cutter head scraper tooth 204 for shaping the edge of the tunnel after the front cutter head 1 cuts the tunnel; the rear cutter head scraper teeth 204 comprise two types of scraper teeth, one type is an edge scraper tooth 205 with cutting and loading effects, and the edge scraper tooth can not only shape and cut but also has loading effects; the other is a vertical scraper tooth 206 with a cutting effect; wherein, the edge scraper teeth 205 and the vertical scraper teeth 206 are fixed on the fixing plate 203 through bolts; the edge scraper teeth 205 and the vertical scraper teeth 206 can be respectively welded on the fixing plate in uniform distribution according to actual conditions.
Referring to fig. 5, the rear cutter head 2 is designed in such a way that the rear cutter head 2 is eccentrically arranged relative to the rotating shaft 3, and the rotation and revolution are combined to achieve an approximate rectangular cutting shape; when the rotation speed and the revolution speed meet a certain ratio; meanwhile, when the ratio of the radius R1 and the eccentricity R2 of the scraper teeth 204 of the rear cutter head meets a certain ratio, a cutting shape similar to a rectangle is obtained; secondly, when the distribution radius R1 of the scraper teeth 204 of the rear cutter head is different from the ratio of the eccentricity R2 of the cutter head shaft, the cutting tracks of the cutting teeth are also different, the cutting teeth on the rear cutter head 2 rotate for a circle, and the cutting direction of the cutting teeth is changed all the time.
By way of example, when the revolution-rotation speed ratio is 1-4 and the R1/R2 value is 7-9, the cutting pick is cut to a shape closest to a square with four round corners.
When the R1/R2 value is smaller, the cutting direction change of the scraper teeth 204 on the rear cutter head 2 is more obvious when the scraper teeth rotate for a circle, when the R1/R2 value is smaller to a certain degree, the situation of cutting by negative rotation can occur, and positive cutting and negative cutting alternately occur. As negative cutting is unfavorable for the working condition of cutting teeth on the rear cutter head, in order to avoid the negative cutting phenomenon, a front cutter head 1 is designed by extending the revolution axis of the front cutter head in advance, the radius of the front cutter head is R3, wherein R2 is more than R3 and less than R1.
The front cutter head 1 is used for cutting an area where negative cutting occurs firstly for processing, so that the rectangular cutting shape is met, the service life of the scraper teeth 204 of the rear cutter head also meets the requirement, the front cutter head 1 and the sun gear extend out of a rotating shaft and are connected together, synchronous rotation with the sun gear is achieved, and the design is ingenious, simple and reliable.
Wherein, referring to fig. 6, the front cutter head 1 comprises a central cover plate 101, a handle plate 105; the center cover plate 101 is attached to the handle plate 105 by screws.
In the scheme, three second tool handles 102 are arranged on the handle plate; the second tool handles are distributed along the circumference of the central cover plate by 360 degrees by taking the central cover plate 101 fixed on the handle plate 105 as the center, and the two adjacent second tool handles 102 are arranged at an included angle of 120 degrees and are arranged on the handle plate 105.
The number of second tool shanks 102 is at least two, and the specific number thereof is not limited and can be determined according to actual conditions.
Each second handle 102 is provided with a plurality of cutting teeth 104, the cutting teeth 104 on the front cutter head 1 adopt cutting teeth which can slightly adapt to cutting in different directions, the cutting teeth are evenly arranged on the second handles 102 according to cutting pitch circles, and the pitch circle interval is 25mm.
Wherein, the central cover plate 101 is a structure formed by connecting a circular plate and a rectangular plate; the center cover plate is provided with a center knife 103, and the center knife 103 and the center cover plate 101 are integrally formed.
The central knife 103 is used for cutting the tunnel for the first time and consists of three small blades which are arranged and connected with each other at an included angle of 120 degrees; wherein, a part of the small blades is distributed on the rectangular plate, the other part is distributed on the circular plate, and the other two small blades are distributed on the circular plate.
The working process of the method in specific application is illustrated as follows:
with back blade disc 2 eccentric settings on axis of rotation 3, and pass the end that back blade disc 2 stretches out at axis of rotation 3 and set up preceding blade disc 1, the sun gear stretches out the pivot and passes through key and bolted connection with preceding blade disc 1, consequently preceding blade disc 1 rotates with the sun gear is synchronous, the planet wheel passes through the bolt with back blade disc 2 or welds integratively, consequently back blade disc 2 and the synchronous revolution of planet wheel and rotation.
When the cutter head works, firstly, the cutting teeth 104 of the front cutter head 1 cut off the middle position which is not beneficial to the working of the rear cutter head 2, and the rear cutter head 2 meets a certain ratio through the self-rotation rotating speed and the revolution rotating speed; meanwhile, when the ratio of the distributed radius of the cutting teeth of the rear cutter head to the eccentricity meets a certain ratio, the cut shape of the front cutter head 1 is cut and modified through the vertical scraper teeth 206 and the edge scraper teeth 205, the modified shape is similar to the shape of four fillets of a rectangular belt, and the stress concentration of the section can be reduced when the fillets appear at the edges of the section.
The rectangular cutting cutterhead for the tunnel, which is formed by the scheme, is eccentrically arranged with the rotating shaft through the rear cutterhead, and can simultaneously revolve and rotate, and after the ratio of the rear cutterhead to the eccentricity and the ratio of the revolution and the rotation all reach certain numerical values, cutting of a rectangular section can be carried out, so that secondary shape modification is not needed to be carried out on the cut roadway shape, and the construction efficiency is greatly improved.
Meanwhile, the front cutter head is arranged in front of the rear cutter head, and is used for cutting the position which is not beneficial to the working of the rear cutter head, so that the service life of the rear cutter head is greatly prolonged.
The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A rectangular cutting cutterhead for tunnel construction is characterized by comprising a transmission case, a rotating shaft and a first cutterhead; the first cutter disc and the rotating shaft are eccentrically arranged; the transmission box is in driving connection with the first cutter head; the first cutter head can revolve with the rotating shaft through the transmission case and rotate at the same time; when the ratio of revolution to rotation speed of the first cutter head is 1-4 and the ratio of the radius of the first cutter head to the eccentricity of the cutter head shaft is 7-9, the requirement of the first cutter head for cutting the rectangular section can be met.
2. The rectangular cutter head for tunnel construction according to claim 1, wherein the transmission case comprises a sun gear, a planet gear and an inner gear ring; the sun wheel is positioned in the center, the planet wheel is positioned between the sun wheel and the inner gear ring, the inner gear ring is fixed on the first side, and the sun wheel is arranged on the second side; the second side of the planet gear is meshed with the sun gear, the first side of the planet gear is meshed with the inner gear ring, when the sun gear rotates, the planet gear is driven to rotate, and the planet gear also rotates in the process of revolving around the sun gear.
3. The rectangular cutter head for tunnel construction according to claim 1, wherein the first cutter head is integrally connected with a main shaft of the planetary gear, so that the first cutter head rotates along with the planetary gear in the transmission case and rotates around a main shaft of the sun gear, thereby realizing rotation and revolution.
4. The rectangular cutting cutterhead for tunnel construction according to claim 1, wherein the first cutterhead includes a central ring, a plurality of shaping relieved teeth, a plurality of first cutterheads and a plurality of fixed plates; the central ring is arranged on the rotating shaft; the first cutter handles are distributed on the circumference taking the central ring as the center at equal intervals; the fixing plates are respectively arranged at one ends of the first cutter handles, which are far away from the central ring; the plurality of rectangular shape-modifying relieved teeth are respectively arranged on the fixed plate.
5. The rectangular cutting cutterhead for tunnel construction of claim 4, wherein said plurality of modified form cutting teeth include edge scraper teeth and vertical scraper teeth; the edge scraper teeth and the vertical scraper teeth are respectively and uniformly distributed and fixed on the fixing plate.
6. The rectangular cutting cutterhead for tunneling according to claim 1, wherein said rectangular cutting cutterhead for tunneling further includes a second cutterhead; the second cutter head is arranged in front of the first cutter head and is in matched connection with the first cutter head through a rotating shaft, and cutting pretreatment can be performed on an area where negative cutting occurs.
7. The rectangular cutting cutterhead for tunnel construction according to claim 6, wherein the second cutterhead is connected to the main shaft of the sun gear in the gearbox, and the second cutterhead rotates together with the sun gear around the main shaft of the sun gear.
8. The rectangular cutting tool disc for tunnel construction according to claim 6, wherein the second tool disc comprises a central cover plate, a shank plate, a plurality of second tool shanks, a plurality of picks and a central tool; the central cover plate is arranged on the handle plate; the plurality of second tool handles are distributed on the circumference taking the central cover plate as the center at equal intervals and are arranged on the handle plate; the center cutter is arranged on the center cover plate and is integrally formed with the center cover plate; the cutting picks are respectively distributed on the second tool handles.
9. The rectangular cutter head for tunnel construction of claim 8, wherein the central cover plate is a structure formed by joining a circular plate and a rectangular plate.
10. The rectangular cutting cutterhead for tunneling according to claim 8, wherein said central cutter is comprised of three small blades; one part of the small blades are distributed on the rectangular plate, the other part of the small blades are distributed on the circular plate, and the other two small blades are distributed on the circular plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121555011.8U CN217681746U (en) | 2021-07-08 | 2021-07-08 | Rectangle cutting blade disc for tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121555011.8U CN217681746U (en) | 2021-07-08 | 2021-07-08 | Rectangle cutting blade disc for tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217681746U true CN217681746U (en) | 2022-10-28 |
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ID=83702510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121555011.8U Active CN217681746U (en) | 2021-07-08 | 2021-07-08 | Rectangle cutting blade disc for tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217681746U (en) |
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2021
- 2021-07-08 CN CN202121555011.8U patent/CN217681746U/en active Active
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