CN114458324A - Shield hobbing cutter - Google Patents
Shield hobbing cutter Download PDFInfo
- Publication number
- CN114458324A CN114458324A CN202210126694.8A CN202210126694A CN114458324A CN 114458324 A CN114458324 A CN 114458324A CN 202210126694 A CN202210126694 A CN 202210126694A CN 114458324 A CN114458324 A CN 114458324A
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- Prior art keywords
- hob
- cutter
- hobbing
- hub
- shield
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- 239000011435 rock Substances 0.000 claims abstract description 63
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 21
- 238000005096 rolling process Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000017525 heat dissipation Effects 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 26
- 230000008569 process Effects 0.000 description 19
- 230000000694 effects Effects 0.000 description 13
- 238000009412 basement excavation Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 230000005641 tunneling Effects 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention belongs to the technical field of shield machine accessories, and particularly relates to a shield hob which comprises a hob shaft assembly, a hob hub and a hob stabilizing mechanism, wherein the hob hub is sleeved in the middle of the hob shaft assembly; through setting up hobbing cutter stabilizing mean, thereby No. two hobbing cutters contact the rock face and roll and drive the cutter hub and rotate on the arbor subassembly, the cutter hub drives a hobbing cutter and rotates and roll the breakage to the rock face, again because a hobbing cutter outer lane diameter is greater than No. two hobbing cutter outer lane diameters, make a hobbing cutter and No. two hobbing cutters contact the rock with the tilt state, thereby change the roll direction of a hobbing cutter and No. two hobbing cutters, make a hobbing cutter and No. two hobbing cutters receive axial effort and reduce along the rock face in-process of rolling, thereby reduce the friction effort between a hobbing cutter and No. two hobbing cutters and the cutter hub, improve the stability of a hobbing cutter and No. two hobbing cutters, thereby prolong the life of a hobbing cutter and No. two hobbing cutters.
Description
Technical Field
The invention relates to the technical field of shield machine accessories, in particular to a shield hob.
Background
A shield machine is a tunnel boring machine using a shield method. The basic working principle of the shield tunneling machine is that a cylindrical steel component is pushed forwards along the axis of the tunnel to excavate soil. The shield machine comprises a propelling system, an excavating system and a laying system, wherein the excavating system comprises a hob plate, a hob box, a hob and a power system, the hob mainly comprises a hob shaft assembly, a hob hub and a hob, the excavating system drives the hob to revolve by utilizing the rotation of the hob plate, and the rotation of the hob is matched with the rotation of the hob to roll and crush the rock surface so as to complete excavation.
Normally, hobbing cutter and the sword hub on the ordinary shield structure machine are installed through interference fit, but the hobbing cutter rubs and rolls crushing in-process with the rock for a long time and produces heat energy, and the hobbing cutter is the metal material again, lead to the hobbing cutter to build up a large amount of heats and make the temperature of hobbing cutter rise at long-time excavation in-process because of the effectual characteristic of metal heat conduction, the hobbing cutter receives the effort that interference fit between hobbing cutter and the sword hub produced again when being heated and expanded, make the hobbing cutter internal surface take place to deform and produce the clearance between the sword hub, cause the hobbing cutter to take place the drunkenness and constantly aggravate the extrusion force of hobbing cutter to the spacing retaining ring of hobbing cutter and break up the hobbing cutter retaining ring even with the sword hub in excavation process, reduce the stability of hobbing cutter, shorten the life of hobbing cutter.
In view of this, the invention provides a shield hob and solves the technical problems that the hob generates heat energy in the process of rubbing and rolling crushing with rocks for a long time, the temperature of the hob rises in the process of digging, the inner surface of the hob deforms and a gap is formed between the inner surface of the hob and a hub, the hob moves with the hub in the process of digging, the extrusion force of the hob on a limit retaining ring of the hob is continuously increased, even the retaining ring of the hob is crushed, the stability of the hob is reduced, and the service life of the hob is shortened.
Disclosure of Invention
In order to make up for the defects of the prior art, the shield hob provided by the invention stabilizes the inner hob through the hob stabilizing mechanism, so that the stability of the hob in the hob stabilizing mechanism in the process of rolling and crushing rocks for a long time is improved, and the service life of the hob in the hob stabilizing mechanism is prolonged.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a shield hobbing cutter, which comprises:
a cutter shaft assembly;
the cutter hub is sleeved at the middle position of the cutter shaft assembly and is rotationally connected with the cutter shaft assembly;
and the hob stabilizing mechanism is sleeved at two ends of the surface of the outer ring of the cutter hub, and the hob assembly is fixedly installed on the surface of the outer ring of the cutter hub.
Preferably, the hob stabilizing mechanism comprises:
the first grooves are uniformly formed in the two ends of the outer surface of the cutter hub, and first clamping grooves are formed in the positions, close to the edges of the two ends of the cutter hub, of the first grooves;
the first hob is sleeved in the first groove at one end of the hob hub and is used for rolling and crushing rocks;
the second hob is sleeved on the cutter hub at a position opposite to the first hob, the first hob and the second hob are symmetrically arranged in the middle of the cutter hub, and the second hob is used for driving the cutter hub to rotate on the cutter shaft assembly;
the first block is fixedly connected to the inner surfaces of the first hob and the second hob and corresponds to the first groove, the first block is positioned in the first groove, and the first block is in sliding connection with the first groove;
the clamp is fixedly installed in the first clamping groove and used for fixing the axial positions of the first hob and the second hob.
The cutter shaft assembly is arranged obliquely, and the diameter of the outer ring of the first hob is larger than that of the outer ring of the second hob; when the cutter works, the first hob and the second hob contact with rocks in an inclined state.
The knife edges of the first hob and the second hob are deviated to the direction far away from the first hob.
Preferably, a plurality of first holes are uniformly formed in the second hob, and a wear-resistant ring is fixedly connected in the first hole close to the top; a first rod is connected in the wear-resistant ring in a sliding manner, one end of the first rod is positioned below the wear-resistant ring, the other end of the first rod is positioned above the wear-resistant ring, one end of the first rod, which is positioned below the wear-resistant ring, is fixedly connected with a piston, and the piston is connected with the wear-resistant ring through a return spring; a pipeline has all been seted up to corresponding a hole position in the sword hub, and the louvre has all been seted up to the position that corresponds a pipeline in the hobbing cutter, and pipeline one end is connected with the louvre, and the other end and a jogged joint.
Preferably, the outlet of the heat dissipation hole is fixedly connected with a dust screen.
Preferably, the top of the first rod is sleeved with a ball.
Preferably, the surface of the outer ring of the second hob is provided with groove-shaped patterns
The invention has the following beneficial effects:
1. according to the invention, the hob stabilizing mechanism is arranged, the second hob contacts the rock surface and rolls to drive the hob hub to rotate on the hob shaft assembly, the hob hub drives the first hob to rotate to roll and crush the rock surface, and the diameter of the outer ring of the first hob is larger than that of the outer ring of the second hob, so that the first hob and the second hob contact the rock in an inclined state, the rolling directions of the first hob and the second hob are changed, the axial acting force applied to the first hob and the second hob in the rolling process along the rock surface is reduced, the friction acting force between the first hob and the second hob and the hob hub is reduced, the stability of the first hob and the second hob is improved, and the service lives of the first hob and the second hob are prolonged.
2. According to the invention, through the cooperation among the first rod, the piston and the first hole, when the first hob and the second hob roll along the rock face, the second hob rotates to drive the first rod to rotate, one end of the first rod, which is far away from the first hole, is extruded to move into the first hole, the first rod drives the piston to move in the first hole, at the moment, the reset spring is in a stretching state by the movement of the piston, when the first rod rotates and crosses the rock face, the reset spring drives the piston to reset, the piston drives the first rod to reset, and in the process of continuously moving in the first pipeline through the piston, the first pipeline continuously inhales and exhausts air through the heat dissipation hole, so that air flows in the first pipeline and the heat dissipation hole continuously, the heat dissipation effect of the first hob is improved, and the influence caused by the heating of the first hob is reduced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic diagram of the operation of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a perspective view of a roller cutter of the present invention;
FIG. 5 is a perspective view of the second hob of the present invention;
FIG. 6 is a perspective view of the hub of the present invention;
in the figure: arbor subassembly 1, sword hub 11, a groove 12, a draw-in groove 13, hobbing cutter stabilizing mean 2, a hobbing cutter 21, No. two hobbing cutters 22, a piece 23, clamp 24, a hole 3, wear ring 31, a pole 32, piston 33, a pipeline 34, louvre 35, dust screen 36, ball 37.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the shield hob of the present invention includes:
a cutter shaft assembly 1;
the cutter hub 11 is sleeved at the middle position of the cutter shaft assembly 1, and the cutter hub 11 is rotatably connected with the cutter shaft assembly 1;
hobbing cutter stabilizing mean 2, hobbing cutter stabilizing mean 2 covers and locates the position of 11 outer lane surfaces both ends of sword hub, and hobbing cutter subassembly fixed mounting is on 11 outer lane surfaces of sword hub.
In the embodiment, a cutter shaft assembly 1 is fixedly arranged in a hob box in a common shield machine, the hob box is fixedly arranged on a hob disc, the shield machine continuously rotates the hob disc in the process of pushing the shield machine to a rock surface for excavation, the hob disc drives the hob box to rotate, the hob box drives the cutter shaft assembly 1 to revolve along with the hob disc, a hob stabilizing mechanism 2 is influenced by the revolution of the cutter shaft assembly 1 after contacting the rock surface to generate friction force with the rock surface, and the hob stabilizing mechanism 2 operates to roll and crush the rock surface, so that tunnel excavation work is performed;
when the shield tunneling machine is used for tunneling, the cutter shaft assembly 1 is fixedly installed in the hob box, the hob head drives the hob box to rotate along with continuous pushing of the shield tunneling machine to a rock face, the hob box drives the cutter shaft assembly 1 to revolve along with the hob head, the hob stabilizing mechanism 2 is influenced by the revolution of the cutter shaft assembly 1 after contacting the rock face and generates friction force with the rock face to roll and crush, the hob stabilizing mechanism 2 stabilizes an internal hob, the stability of the hob in the hob stabilizing mechanism 2 in the process of rolling and crushing the rock for a long time is improved, the service life of the hob in the hob stabilizing mechanism 2 is prolonged, because the hob on the common shield tunneling machine is installed through interference fit with the cutter hub 11, but the hob generates heat energy in the process of rubbing and rolling and crushing the rock for a long time, and the hob is made of metal, and because of the characteristic of good metal heat conduction effect, the hob itself accumulates and accumulates heat in the long-time tunneling process to enable the hob to be of the hob The temperature rises, and the hobbing cutter receives the effort that interference fit produced between hobbing cutter and the sword hub 11 again when being heated expansion for the hobbing cutter internal surface takes place to deform and with the sword hub 11 between produce the clearance, cause the hobbing cutter to take place the drunkenness and constantly aggravate the hobbing cutter and crowd the hobbing cutter retaining ring even to the extrusion force of the spacing retaining ring of hobbing cutter at excavation in-process and sword hub 11, reduce the stability of hobbing cutter, shorten the life of hobbing cutter.
As an embodiment of the present invention, the hob stabilizing mechanism 2 includes:
the first grooves 12 are uniformly formed in the two ends of the outer surface of the cutter hub 11, and the first grooves 12 are provided with first clamping grooves 13 at the edge positions, close to the two ends of the cutter hub 11, of the first grooves 12;
the first hob 21 is sleeved at the first groove 12 at one end of the cutter hub 11, and the first hob 21 is used for rolling and crushing rocks;
the second hob cutter 22 is sleeved on the cutter hub 11 at a position opposite to the first hob cutter 21, the first hob cutter 21 and the second hob cutter 22 are symmetrically arranged in the middle of the cutter hub 11, and the second hob cutter 22 is used for driving the cutter hub 11 to rotate on the cutter shaft assembly 1;
the first block 23 is fixedly connected to the inner surfaces of the first hob 21 and the second hob 22 at positions corresponding to the first groove 12, the first block 23 is located in the first groove 12, and the first block 23 is in sliding connection with the first groove 12;
the clamp 24 is fixedly installed in the first clamping groove 13, and the clamp 24 is used for fixing the axial positions of the first hob 21 and the second hob 22.
The cutter shaft assembly 1 is arranged obliquely, and the diameter of the outer ring of the first hob 21 is larger than that of the outer ring of the second hob 22; in operation, the first hob 21 and the second hob 22 contact the rock in an inclined state.
The edges of the first hob 21 and the second hob 22 are biased away from the first hob 21.
During installation, the first block 23 on the first hob 21 and the second hob 22 is aligned with the first groove 12 and pushed in, the first block 23 and the first groove 12 are in a transition fit state, the first hob 21 and the second hob 22 are sleeved on the cutter hub 11, the first block 23 is in the first groove 12, the clamp 24 is sleeved in the first clamping groove 13 and locked by the bolt, the first hob 21 and the second hob 22 are locked and fixed, and the hob shaft assembly 1 is obliquely installed in the hob box;
in the embodiment, the acting force generated by the contact between the first hob 21 and the rock surface is greater than the acting force generated by the contact between the second hob 22 and the rock surface, the second hob 22 contacts the rock surface and rolls to drive the cutter hub 11 to rotate on the cutter shaft assembly 1, the cutter hub 11 drives the first hob 21 to rotate to crush the rock surface, compared with the case that the hob in the ordinary shield machine rolls perpendicular to the rock surface, the hob revolves along with the rotation of the hob head, the hob continuously contacts the rock surface in the revolution process to generate the friction force far away from the center direction of the hob head so as to rotate, thereby crushing the rock surface, the hob in the ordinary shield machine generates a large amount of heat in the process that the hob is continuously rubbed to rotate, so that the temperature of the hob rises rapidly, the hob deforms by the acting force generated by interference fit and causes the hob to move on the cutter hub 11, the stability of the hob in the common shield machine is reduced, the service life of the hob is influenced, the effect that the temperature of the first hob 21 and the second hob 22 rises rapidly due to the influence of friction and rolling acting force is relieved in a mode that the hob shaft assembly 1 is installed in an inclined mode, the stability of the first hob 21 and the second hob 22 is improved, and therefore the service lives of the first hob 21 and the second hob 22 are prolonged;
when the cutter is used, the diameter of the outer ring of the first hob 21 is larger than that of the outer ring of the second hob 22, so that the first hob 21 and the second hob 22 are in contact with rock in an inclined state, the rolling direction of the first hob 21 and the second hob 22 is changed, the axial acting force applied to the first hob 21 and the second hob 22 in the process of rolling along the rock surface is reduced, the friction acting force between the first hob 21 and the second hob 22 and the cutter hub 11 is reduced, the stability of the first hob 21 and the second hob 22 is improved, the service lives of the first hob 21 and the second hob 22 are prolonged, and the phenomenon that the first hob 21 and the second hob 22 are heated, deformed and moved due to the long-time friction acting force applied between the first hob 21 and the second hob 22 and the cutter hub 11 is avoided; the clamp 24 can be made of carbon fiber resin composite materials, has the strength five times higher than that of steel, and has the characteristics of thermal shock resistance and low thermal expansion coefficient, so that the clamp 24 can support the extrusion force of the first hob 21 and the second hob 22 for a long time in the locking process of the first hob 21 and the second hob 22, the locking effect of the clamp 24 is improved, and the stability of the first hob 21 and the second hob 22 in the long-time working process is improved.
As an embodiment of the invention, a plurality of first holes 3 are uniformly formed on the second hob 22, and a wear-resistant ring 31 is fixedly connected to the position, close to the top, in each first hole 3; a first rod 32 is connected in the wear-resistant ring 31 in a sliding manner, one end of the first rod 32 is positioned below the wear-resistant ring 31, the other end of the first rod 32 is positioned above the wear-resistant ring 31, one end of the first rod 32 positioned below the wear-resistant ring 31 is fixedly connected with a piston 33, and the piston 33 is connected with the wear-resistant ring 31 through a return spring; a pipeline 34 has all been seted up to corresponding No. 3 hole positions in the sword hub 11, and louvre 35 has all been seted up to the position that corresponds No. 34 pipeline in a hobbing cutter 21, and No. 34 pipeline one end is connected with louvre 35, and the other end is connected with a hole 3.
When the rock rolling machine is used, in the process that the first hob 21 and the second hob 22 roll along the rock surface, the acting force generated by the contact between the first hob 21 and the rock surface is greater than the acting force generated by the contact between the second hob 22 and the rock surface, so that the heat generated by the rock rolling of the first hob 21 is greater than that of the second hob 22, the second hob 22 rotates to drive the first rod 32 to rotate, one end, far away from the first hole 3, of the first rod 32 is in contact with the rock surface and then is extruded to move in the first hole 3, the first rod 32 drives the piston 33 to move in the first hole 3, the reset spring is in a stretching state by the movement of the piston 33, after the first rod 32 rotates to cross the rock surface, the reset spring drives the piston 33 to reset, the piston 33 drives the first rod 32 to reset, in the process that the piston 33 continuously moves in the first pipeline 34, the first pipeline 34 continuously inhales and exhausts air through the heat dissipation hole 35, so that air continuously flows in the first pipeline 34 and the heat dissipation hole 35, the heat dissipation effect of the first hob 21 is improved, so that the influence of the first hob 21 caused by heating is reduced; by arranging the wear-resistant ring 31, when the first rod 32 contacts the rock surface, the first rod 32 is limited by the wear-resistant ring 31 to move along the axis of the first hole 3, so that the motion effect of the first rod 32 is improved, and the influence on the normal movement of the piston 33 caused by the inclination of the first rod 32 due to extrusion is avoided;
the surface that contact rock was kept away from to No. two hobbing cutter 22 scribbles radiation heat dissipation cooling coating, has with low costs, implements simple characteristics, and radiation heat dissipation cooling coating is directly under construction to No. two hobbing cutter 22 and keeps away from the surface of contact rock, and radiation heat dissipation cooling coating improves No. two hobbing cutter 22's radiating effect through the surperficial radiation efficiency that contact rock was kept away from to No. two hobbing cutter 22 to reduce No. two hobbing cutter 22's temperature.
As an embodiment of the present invention, a dust screen 36 is fixedly connected to an outlet of the heat dissipation hole 35.
During the use, through setting up dust screen 36, at piston 33 constantly remove the in-process, louvre 35 constantly has air to get into and discharges, No. one hobbing cutter 21 is rolling the dust that broken rock produced and is flowing towards louvre 35 along with the air current, dust screen 36 blocks the dust, improve louvre 35 and No. one pipeline 34's clean degree, further improve a hobbing cutter 21's radiating effect, thereby reduce the influence that a hobbing cutter 21 is heated and leads to, avoid the dust to fall into and assemble and block a pipeline 34's phenomenon in a pipeline 34.
In one embodiment of the present invention, a ball 37 is sleeved on the top of the first rod 32.
During the use, through setting up ball 37, No. two hobbing cutters 22 roll and drive a pole 32 and roll, the one end that a hole 3 was kept away from to a pole 32 is close to the rock face, ball 37 contact rock face on a pole 32, ball 37 becomes rolling friction's contact mode with sliding friction's contact mode between a pole 32 and the rock face, improve a pole 32's motion effect, thereby improve the radiating effect of piston 33 motion to a hobbing cutter 21, and then improve the stability after a hobbing cutter 21 is heated, avoid leading to the phenomenon of blocking on the rock face of a pole 32 contact unevenness.
In one embodiment of the present invention, the surface of the outer ring of the No. two hob 22 is provided with a groove-like pattern.
During the use, there is the decorative pattern of flute form through setting up No. two hobbing cutter 22 outer lane surfaces, the decorative pattern contact rock face of flute form, under the hobbing cutter dish drives, No. two hobbing cutter 22 revolves along with the hobbing cutter dish, No. two hobbing cutter 22 outer lane on the concave pattern contact rock face on the surface blocks and stops No. two hobbing cutter 22 take place to slide under the less condition of effort between with the rock face, improve No. two hobbing cutter 22's roll effect, thereby drive the motion effect of sword hub 11 and a hobbing cutter 21, and then improve a hobbing cutter 21's stability, avoid causing a hobbing cutter 21 self temperature phenomenon that rises fast because of No. two hobbing cutter 22 skids on the rock face.
The specific working process is as follows:
when the cutter shaft assembly 1 is installed, firstly, a first block 23 on a first hob 21 and a second hob 22 is aligned with a first groove 12 and pushed in, the first block 23 and the first groove 12 are in a transition fit state, so that the first hob 21 and the second hob 22 are sleeved on a cutter hub 11, the first block 23 is in the first groove 12, then a clamp 24 is sleeved in a first clamp groove 13 and locked by a bolt, the first hob 21 and the second hob 22 are locked and fixed, and then the cutter shaft assembly 1 is obliquely installed in a hob box; the second hob 22 contacts the rock surface and rolls to drive the cutter hub 11 to rotate on the cutter shaft assembly 1, and the cutter hub 11 drives the first hob 21 to rotate to roll and crush the rock surface; in the process of rolling along the rock face of a hobbing cutter 21 and a hobbing cutter 22, No. two hobbing cutters 22 rotate and drive a rod 32 to rotate, a rod 32 is kept away from behind the one end contact rock face of a hole 3 and is moved to a hole 3 by the extrusion, a rod 32 drives piston 33 and removes in a hole 3, reset spring receives piston 33's removal to be tensile state this moment, after a rod 32 rotates and crosses the rock face, reset spring drives piston 33 and resets, piston 33 drives a rod 32 and resets, through the in-process that piston 33 constantly removed in a pipeline 34, a pipeline 34 constantly breathes in and exhausts through louvre 35, make constantly have the air current to dispel the heat to a hobbing cutter 21 in a pipeline 34 and the louvre 35.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in fig. 2, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the scope of the present invention, and furthermore, the terms "first", "second", "third", etc., are only used for distinguishing the description and are not to be construed as indicating or implying relative importance.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A shield hob, comprising:
a cutter shaft assembly (1);
the cutter hub (11) is sleeved at the middle position of the cutter shaft assembly (1), and the cutter hub (11) is rotatably connected with the cutter shaft assembly (1);
hobbing cutter stabilizing mean (2), hobbing cutter stabilizing mean (2) cover are located sword hub (11) outer lane surface both ends position, and hobbing cutter subassembly fixed mounting is on sword hub (11) outer lane surface.
2. The shield hob of claim 1, characterized in that: the hob stabilizing mechanism (2) comprises:
the first grooves (12) are uniformly formed in the two ends of the outer surface of the cutter hub (11), and the first grooves (12) are provided with first clamping grooves (13) close to the edges of the two ends of the cutter hub (11);
the first hob (21), the first hob (21) is sleeved in the first groove (12) at one end of the hob hub (11), and the first hob (21) is used for rolling and crushing rocks;
the second hob (22) is sleeved on the hob hub (11) at a position opposite to the first hob (21), the first hob (21) and the second hob (22) are symmetrically arranged in the middle of the hob hub (11), and the second hob (22) is used for driving the hob hub (11) to rotate on the hob shaft assembly (1);
the first block (23) is fixedly connected to the inner surfaces of the first hob (21) and the second hob (22) at positions corresponding to the first groove (12), the first block (23) is located in the first groove (12), and the first block (23) is in sliding connection with the first groove (12);
the hoop (24), hoop (24) fixed mounting are in a draw-in groove (13), and hoop (24) are used for fixing the axial position of a hobbing cutter (21) and No. two hobbing cutters (22).
3. The shield hob of claim 1, characterized in that: the cutter shaft assembly (1) is obliquely arranged, and the diameter of the outer ring of the first hob (21) is larger than that of the outer ring of the second hob (22); when the rotary cutter works, the first hob (21) and the second hob (22) contact with rock in an inclined state.
4. The shield hob of claim 2, characterized in that: the knife edges of the first hob (21) and the second hob (22) are deviated in the direction away from the first hob (21).
5. The shield hob of claim 2, characterized in that: a plurality of first holes (3) are uniformly formed in the second hob (22), and a wear-resistant ring (31) is fixedly connected to the position, close to the top, in each first hole (3); a first rod (32) is connected in the wear-resistant ring (31) in a sliding manner, one end of the first rod (32) is positioned below the wear-resistant ring (31), the other end of the first rod (32) is positioned above the wear-resistant ring (31), one end of the first rod (32) positioned below the wear-resistant ring (31) is fixedly connected with a piston (33), and the piston (33) is connected with the wear-resistant ring (31) through a return spring; pipeline (34) have all been seted up one in corresponding hole (3) position in sword hub (11), and louvre (35) have all been seted up to the position that corresponds pipeline (34) in hobbing cutter (21), and pipeline (34) one end is connected with louvre (35), and the other end is connected with hole (3).
6. The shield hob of claim 5, characterized in that: the outlet of the heat dissipation hole (35) is fixedly connected with a dust screen (36).
7. The shield hob of claim 5, characterized in that: the top of the first rod (32) is sleeved with a ball (37).
8. The shield hob of claim 5, characterized in that: the surface of the outer ring of the second hob (22) is provided with groove-shaped patterns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210126694.8A CN114458324B (en) | 2022-02-10 | 2022-02-10 | Shield hobbing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210126694.8A CN114458324B (en) | 2022-02-10 | 2022-02-10 | Shield hobbing cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114458324A true CN114458324A (en) | 2022-05-10 |
| CN114458324B CN114458324B (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210126694.8A Active CN114458324B (en) | 2022-02-10 | 2022-02-10 | Shield hobbing cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114458324B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202483583U (en) * | 2012-03-30 | 2012-10-10 | 常德市中天精密工具有限公司 | Hobbing cutter used for shield machine |
| CN208220798U (en) * | 2018-04-13 | 2018-12-11 | 南昌力通岩土工程设备有限公司 | The Hob ring of shield machine |
| CN208650858U (en) * | 2018-09-05 | 2019-03-26 | 中国铁建重工集团有限公司 | Development machine and its knife of backbreaking |
| CN209244570U (en) * | 2018-08-20 | 2019-08-13 | 广州神拓科技有限公司 | A kind of inserted disk cutter |
| CN212958633U (en) * | 2020-06-15 | 2021-04-13 | 陈叶琦 | Green's shield tunnel entry driving machine cutter device |
| US20210231013A1 (en) * | 2019-04-19 | 2021-07-29 | China University Of Mining And Technology | Hard rock roadway and tunnel boring machine with actively rotating hobs |
| CN214997650U (en) * | 2021-04-20 | 2021-12-03 | 中铁十八局集团有限公司 | Hob assembly for shield machine |
-
2022
- 2022-02-10 CN CN202210126694.8A patent/CN114458324B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202483583U (en) * | 2012-03-30 | 2012-10-10 | 常德市中天精密工具有限公司 | Hobbing cutter used for shield machine |
| CN208220798U (en) * | 2018-04-13 | 2018-12-11 | 南昌力通岩土工程设备有限公司 | The Hob ring of shield machine |
| CN209244570U (en) * | 2018-08-20 | 2019-08-13 | 广州神拓科技有限公司 | A kind of inserted disk cutter |
| CN208650858U (en) * | 2018-09-05 | 2019-03-26 | 中国铁建重工集团有限公司 | Development machine and its knife of backbreaking |
| US20210231013A1 (en) * | 2019-04-19 | 2021-07-29 | China University Of Mining And Technology | Hard rock roadway and tunnel boring machine with actively rotating hobs |
| CN212958633U (en) * | 2020-06-15 | 2021-04-13 | 陈叶琦 | Green's shield tunnel entry driving machine cutter device |
| CN214997650U (en) * | 2021-04-20 | 2021-12-03 | 中铁十八局集团有限公司 | Hob assembly for shield machine |
Also Published As
| Publication number | Publication date |
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| CN114458324B (en) | 2022-08-23 |
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