CN215672218U - Small-sized full-face tunnel boring machine - Google Patents
Small-sized full-face tunnel boring machine Download PDFInfo
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- CN215672218U CN215672218U CN202121209146.9U CN202121209146U CN215672218U CN 215672218 U CN215672218 U CN 215672218U CN 202121209146 U CN202121209146 U CN 202121209146U CN 215672218 U CN215672218 U CN 215672218U
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Abstract
The utility model provides a small-sized full-face tunnel boring machine, which belongs to the field of tunnel boring equipment and comprises: a body, an annular cavity structure; the cutter head is of a straight-line structure and is connected to the front end of the machine body, and a cutting cutter and a rolling shearing crushing cutter are arranged on the cutter head; the driving mechanism is accommodated in the machine body and used for driving the cutter head to rotate, and the driving mechanism is selected from one of a planetary gear speed reduction driving mechanism, a gear transmission speed reduction driving mechanism and a speed reduction motor speed reduction driving mechanism; the supporting and propelling mechanism is arranged outside the machine body; the spiral conveyor is horizontally arranged at the bottom of the machine body and is used for discharging the slag soil generated during tunneling. The small-sized full-face tunneling machine can be used for constructing multi-angle projects such as a raise, a drift, an inclined shaft and the like, and is simple in structure, low in cost and high in tunneling speed.
Description
Technical Field
The utility model belongs to the field of tunneling equipment, and particularly relates to a small full-face tunnel boring machine.
Background
At present, the full-face well/roadway drilling equipment mainly comprises a shield machine and a raise boring machine.
The shield machine integrally propels the cutter head and the machine body by means of external mechanical or hydraulic power, presses the cutter into the rock, and rotates the cutter head by strong torque, so that rolling and cutting operations are carried out on the rock working surface. However, the shield machine is huge in body, not suitable for small-specification working faces with variable underground construction positions of mines, and expensive in construction cost.
When the raise boring machine is constructed, firstly, the machine is used for constructing a guide hole with a small section at the existing space from the upper part to the lower part of a drilled (sky) well to be constructed; after the construction of the guide hole is completed, a large-section raise boring bit is hung at the bottom of the hole, the main machine drives the raise boring bit to drill upwards by rotating the drill rod, and the rock is rolled, sheared and damaged by the rotatable rolling cutter head fixed on the drill bit. Because the raise boring machine adopts a traction mode from bottom to top, only steep inclined raise can be constructed generally, and projects such as drift, inclined well and ground well cannot be constructed.
SUMMERY OF THE UTILITY MODEL
Based on the background problem, the utility model aims to provide a small full-face tunnel boring machine which can be used for constructing multi-angle projects such as a raise, a drift, an inclined shaft and the like, and has the advantages of simple machine body structure, low cost and high boring speed.
In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:
small-size full-face tunnel boring machine, its characterized in that includes:
the machine body is of an annular cavity structure;
the cutter head is of a straight-line structure and is connected to the front end of the machine body, and a cutting cutter and a rolling shearing crushing cutter are arranged on the cutter head;
the driving mechanism is accommodated in the machine body and used for driving the cutter head to rotate, and the driving mechanism is selected from one of a planetary gear speed reduction driving mechanism, a gear transmission speed reduction driving mechanism and a speed reduction motor speed reduction driving mechanism;
the supporting and propelling mechanism is arranged outside the machine body;
and the slag discharging mechanism is horizontally arranged at the bottom of the machine body, is a spiral conveyor and is used for discharging slag soil generated during tunneling.
In one embodiment, the drive mechanism is a planetary gear reduction drive mechanism comprising:
the motor is accommodated in the machine body and is arranged along the central shaft of the machine body;
the outer gear ring is fixedly arranged;
the central gear is connected to the output shaft of the motor and is positioned at the circle center of the outer gear ring;
and at least two planetary gears are arranged, the planetary gears are respectively meshed with the central gear and the outer gear ring, and the wheel axle of each planetary gear is fixed on the cutter head.
In one embodiment, the drive mechanism is a geared reduction drive mechanism comprising:
the motor is accommodated in the machine body and is arranged by deviating from the central shaft of the machine body;
the driving gear is connected to an output shaft of the motor;
and the driven gear is fixed on the cutter head and meshed with the driving gear, and the size of the driven gear is larger than that of the driving gear.
In one embodiment, the drive mechanism is a geared motor reduction drive mechanism comprising:
and the speed reducing motor is accommodated in the machine body and is arranged along the central shaft of the machine body, and an output shaft of the speed reducing motor is fixed with the cutter head.
Further, the organism is closed cavity structure, the front end of organism extends and has annular connecting portion, rotate on the annular connecting portion and be connected with the blade disc.
Furthermore, an annular sealing part extends on the cutter head, and the annular sealing part is sleeved on the annular connecting part.
Furthermore, the longitudinal section of the annular sealing part is L-shaped, and an annular groove for embedding the L-shaped end part of the annular sealing part is formed in the annular connecting part.
Furthermore, an annular thrust bearing is arranged between the front end of the annular connecting part and the cutter head.
Compared with the prior art, the embodiment of the utility model at least has the following effects:
1. the small full-face tunnel boring machine can be used for constructing multi-angle projects such as a raise, a drift, an inclined shaft and the like, and is simple in structure, low in cost and high in boring speed.
2. The driving mechanism is selected from one of a planetary gear speed reduction driving mechanism, a gear transmission speed reduction driving mechanism and a speed reduction motor speed reduction driving mechanism, and the rotating speed of the cutter head can be effectively regulated and controlled.
3. The machine body is of a closed cavity structure, the front end of the machine body extends to form an annular connecting part to be connected with the cutter head, and the cutter head is rotatably connected with the annular connecting part through the annular sealing part, so that muck generated in the tunneling process can be prevented from entering the annular connecting part and the machine body, and the influence on the construction of a driving machine is avoided.
4. According to the utility model, the annular thrust bearing is arranged between the front end of the annular connecting part and the cutter head, so that the cutter head can rotate smoothly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a front sectional view of a small and medium-sized full-face tunnel boring machine in embodiment 1 of the present invention;
FIG. 2 is a sectional view taken along line A-A in example 1 of the present invention;
FIG. 3 is a sectional view taken along line B-B in example 1 of the present invention;
FIG. 4 is a front sectional view of a small and medium-sized full-face tunnel boring machine in embodiment 2 of the present invention;
fig. 5 is a front sectional view of a small and medium-sized full-face tunnel boring machine in embodiment 3 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be further noted that the description of the terms "first," "second," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated.
Example 1
The structure of the small-sized full-face tunnel boring machine of the embodiment is shown in fig. 1 to 3, specifically, as shown in fig. 1, the small-sized full-face tunnel boring machine is composed of: the device comprises a machine body 1, a cutter head 2, a driving mechanism 3, a supporting and propelling mechanism 4 and a slag discharging mechanism 5.
In this embodiment, the machine body 1 is a closed annular cavity structure, and in order to install the cutter head 2, an annular connecting portion 101 extends from a front end (i.e., a right end in fig. 1) of the machine body 1, and the annular connecting portion 101 is integrally formed with the machine body 1.
Specifically, the rear end (i.e. the left end in fig. 1) of the cutter head 2 extends to form an annular sealing portion 201, the annular sealing portion 201 is integrally formed with the cutter head 2, and the annular sealing portion 201 is sleeved on the annular connecting portion 101.
In order to ensure the connection tightness, the longitudinal section of the annular sealing part 201 of the embodiment is L-shaped, and the outer wall of the annular connecting part 101 is provided with the annular groove 102, so that the L-shaped end part of the annular sealing part 201 can be clamped in the annular groove 102 to form a seal, thereby preventing the muck generated in the tunneling process from entering the annular connecting part 101 and the machine body 1, and avoiding the influence on the normal operation of the driving mechanism 3.
In order to ensure the smoothness of the rotation of the cutter head 2, as shown in fig. 1, in this embodiment, an annular thrust bearing 103 is further disposed between the front end of the annular connecting portion 101 and the cutter head 2, the annular thrust bearing 103 is an existing product, and the structure of this embodiment is not described again.
In this embodiment, as shown in fig. 2, the cutter disc 2 is in a straight-line structure, and the end of the cutter disc 2 is in a circular arc shape, as shown in fig. 1, the cutter disc 2 is provided with a cutting tool and a rolling shearing crushing tool, which have been described in detail in the previous application of the present inventor, and this embodiment will not be described in detail.
In the present embodiment, as shown in fig. 1 and 3, the driving mechanism 3 is used for driving the cutter head 2 to rotate, and specifically, is a planetary gear speed reduction driving mechanism, including: motor 301, outer ring gear 302, sun gear 303, planet gear I304, and planet gear II 305.
As shown in fig. 1 and 3, the motor 301 is accommodated in the machine body 1 and is disposed along a central axis of the machine body 1, in order to fix the motor 301, a plurality of fixing columns 104 are uniformly distributed in a circle in the machine body 1, and the plurality of fixing columns 104 are matched to support and fix the motor 301.
It should be noted that the fixing structure of the motor 301 is not limited to this, and in other embodiments, a support plate may be directly horizontally disposed in the machine body 1, and the motor 301 may be fixed on the support plate, where the support plate is disposed at a height such that when the motor 301 is placed on the support plate, the output shaft of the motor 301 is coaxial with the outer gear ring 302.
As shown in fig. 1, the outer ring gear 302 is fixed in the annular connecting portion 101, the sun gear 303 is connected to the output shaft of the motor 301 and is located at the center of the outer ring gear 302, the planet gears I304 and II 305 are both located in the outer ring gear 302, the planet gears I304 and II 305 are distributed at 180 °, and the planet gears I304 and II 305 are meshed with the outer ring gear 302 and the sun gear 303 respectively.
In order to drive the cutter head 2 to rotate through the planetary gear speed reduction driving mechanism, as shown in fig. 1, in the present embodiment, an axle I306 is inserted through the planetary gear I304, an axle II 307 is inserted through the planetary gear II 305, and both the axle I306 and the axle II 307 are fixed on the cutter head 2.
When the motor 301 drives the central gear 303 to rotate, the planetary gear I304 and the planetary gear II 305 revolve around the central gear 303 and rotate at the same time, so as to drive the cutter head 2 to rotate, and at this time, the rotation speed of the cutter head 2 is less than that of the central gear 303.
The number of the planetary gears is not limited to two in the present embodiment, and in other embodiments, the number of the planetary gears may be three, five, or the like.
In the embodiment, the supporting and propelling mechanism 4 is used for realizing the movement of the heading machine and supporting the formed roadway, as shown in fig. 1 and 3, the supporting and propelling mechanism 4 is arranged outside the machine body 1, and the supporting and propelling mechanism 4 is in the prior art, and may be in a caterpillar structure.
In the present embodiment, as shown in fig. 1, the slag discharging mechanism 5 is horizontally disposed at the bottom of the machine body 1 and is a screw conveyor, and during the excavation process, after the slag on the working face falls off, the slag is accumulated at the bottom of the roadway and is discharged by the screw conveyor, which is the prior art.
The small-sized full-face tunnel boring machine of the embodiment can be used for constructing multi-angle projects such as a raise, a drift, an inclined shaft and the like, and is simple in structure, low in cost and high in boring speed.
Example 2
The structure of the small-sized full-face tunnel boring machine of the present embodiment is as shown in fig. 4, and is different from embodiment 1 in that the driving mechanism 3 of the present embodiment is a gear transmission speed reduction driving mechanism.
In this embodiment, the gear reduction drive mechanism includes: a motor 301, a drive gear 308, and a driven gear 309.
Specifically, the motor 301 is accommodated in the machine body 1, and the motor 301 is disposed deviating from the central axis of the machine body 1, in order to ensure the eccentric arrangement of the motor 301, the partition plate 105 is horizontally disposed in the motor 301, and the motor 301 is fixed on the partition plate 105.
The driving gear 308 is located at the annular connecting portion 101 and connected to an output shaft of the motor 301, the driven gear 309 is rotatably disposed at the front end of the machine body 1 through a rotating shaft and fixed with the cutter head 2, the driven gear 309 is engaged with the driving gear 308, and the size of the driven gear 309 is larger than that of the driving gear 308, so that the purpose of speed reduction is achieved.
Example 3
The structure of the small-sized full-face tunnel boring machine of the embodiment is shown in fig. 5, and is different from embodiment 1 in that the driving mechanism 3 in the embodiment is a speed reduction motor speed reduction driving mechanism, and specifically includes a speed reduction motor 301, the speed reduction motor 301 is accommodated in the machine body 1 and is arranged along the central shaft of the machine body 1, and the output shaft of the speed reduction motor 301 is directly connected with the cutter head 2.
It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (8)
1. Small-size full-face tunnel boring machine, its characterized in that includes:
the machine body is of an annular cavity structure;
the cutter head is of a straight-line structure and is connected to the front end of the machine body, and a cutting cutter and a rolling shearing crushing cutter are arranged on the cutter head;
the driving mechanism is accommodated in the machine body and used for driving the cutter head to rotate, and the driving mechanism is selected from one of a planetary gear speed reduction driving mechanism, a gear transmission speed reduction driving mechanism and a speed reduction motor speed reduction driving mechanism;
the supporting and propelling mechanism is arranged outside the machine body;
and the slag discharging mechanism is horizontally arranged at the bottom of the machine body, is a spiral conveyor and is used for discharging slag soil generated during tunneling.
2. A small full face tunnel boring machine according to claim 1 wherein the drive mechanism is a planetary gear reduction drive mechanism comprising:
the motor is accommodated in the machine body and is arranged along the central shaft of the machine body;
the outer gear ring is fixedly arranged;
the central gear is connected to the output shaft of the motor and is positioned at the circle center of the outer gear ring;
and at least two planetary gears are arranged, the planetary gears are respectively meshed with the central gear and the outer gear ring, and the wheel axle of each planetary gear is fixed on the cutter head.
3. A small full face tunnel boring machine according to claim 1 wherein the drive mechanism is a geared reduction drive mechanism comprising:
the motor is accommodated in the machine body and is arranged by deviating from the central shaft of the machine body;
the driving gear is connected to an output shaft of the motor;
and the driven gear is fixed on the cutter head and meshed with the driving gear, and the size of the driven gear is larger than that of the driving gear.
4. A small full face tunnel boring machine according to claim 1 wherein the drive mechanism is a gear motor reduction drive mechanism comprising:
and the speed reducing motor is accommodated in the machine body and is arranged along the central shaft of the machine body, and an output shaft of the speed reducing motor is fixed with the cutter head.
5. The small-sized full-face tunnel boring machine according to claim 1, wherein the machine body is a closed cavity structure, an annular connecting part extends from the front end of the machine body, and the cutter head is rotatably connected to the annular connecting part.
6. The small full-face tunnel boring machine according to claim 5, wherein an annular sealing portion extends from the cutter head, and the annular sealing portion is fitted over the annular connecting portion.
7. The small-sized full-face tunnel boring machine according to claim 6, wherein the longitudinal section of the annular sealing portion is L-shaped, and an annular groove into which an L-shaped end portion of the annular sealing portion is fitted is formed in the annular connecting portion.
8. The small-sized full-face tunnel boring machine according to claim 5, wherein an annular thrust bearing is further provided between the front end of the annular connecting portion and the cutter head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121209146.9U CN215672218U (en) | 2021-06-01 | 2021-06-01 | Small-sized full-face tunnel boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121209146.9U CN215672218U (en) | 2021-06-01 | 2021-06-01 | Small-sized full-face tunnel boring machine |
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| Publication Number | Publication Date |
|---|---|
| CN215672218U true CN215672218U (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121209146.9U Active CN215672218U (en) | 2021-06-01 | 2021-06-01 | Small-sized full-face tunnel boring machine |
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|---|---|
| CN (1) | CN215672218U (en) |
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2021
- 2021-06-01 CN CN202121209146.9U patent/CN215672218U/en active Active
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