CN117145395A - High-efficiency drilling bit - Google Patents
High-efficiency drilling bit Download PDFInfo
- Publication number
- CN117145395A CN117145395A CN202311421412.8A CN202311421412A CN117145395A CN 117145395 A CN117145395 A CN 117145395A CN 202311421412 A CN202311421412 A CN 202311421412A CN 117145395 A CN117145395 A CN 117145395A
- Authority
- CN
- China
- Prior art keywords
- rod
- rotating
- cutter head
- rods
- supporting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 210000000078 claw Anatomy 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a high-efficiency drilling bit, comprising: the support assembly is rotatably provided with a rotating shaft, one end of the rotating shaft is connected with the drill rod, and the other end of the rotating shaft is connected with the transmission assembly; the output end of the transmission assembly is connected with a cutter head, one face of the cutter head, which is away from the transmission assembly, is provided with a plurality of rotating rods, a cutter head cover is arranged on the cutter head, a supporting rod is arranged between every two adjacent rotating rods, the supporting rods are connected with the rotating rods through tension springs, the two supporting rods connected with the same rotating rod are symmetrically arranged about the center of the rotating rods, one end of each supporting rod penetrates out of the cutter head cover and then is connected with a cutter, the other end of each supporting rod penetrates into a groove formed in the cutter head, and the end part of each supporting rod is connected with the inner wall of the groove through a reset spring; a sliding rod is arranged on the supporting rod in the groove in a penetrating mode, the end portion of the sliding rod is connected with the side wall of the groove in a sliding mode, the device is used for improving the treatment of soil on hard objects, so that the hard objects fall off, drilling efficiency is improved, drill bit damage is reduced, and popularization is worth.
Description
Technical Field
The invention relates to the field of drilling equipment, in particular to a high-efficiency drilling bit.
Background
Along with the development of high speed in China, more expressways and railways are put into construction, however, the topography of China is complex, and in the process of building highway and railway engineering, tunnel drilling is required to be excavated on a mountain of a planned route for shortening mileage.
Because the geological types of tunnel mountain are changeable, hardness is also different, in traditional drilling equipment tunneling process, hard thing that is difficult to creep into is touched easily to its drill bit, and the drill bit is direct to break it, can cause very big wearing and tearing to the drill bit to can influence the life of drill bit, and then influence the drilling efficiency of drilling equipment.
Accordingly, there is a need to provide a high efficiency drilling bit that addresses the above-described problems.
Disclosure of Invention
The invention provides a high-efficiency drilling bit which can remove soil around hard objects, is easy to fall off the hard objects, improves drilling effect and prolongs service life of the bit, and solves the existing problems.
The invention relates to a high-efficiency drilling bit, which adopts the following technical scheme:
comprising the following steps:
a support assembly;
the rotating shaft is rotatably arranged on the supporting component, one end of the rotating shaft is used for being connected with a drill rod of drilling equipment, and the other end of the rotating shaft is connected with the transmission component;
the cutter head is connected to the output end of the transmission assembly, one surface of the cutter head, which is away from the transmission assembly, is provided with a plurality of rotating rods which are arranged in parallel, the rotating rods are sequentially arranged from the center of the cutter head to the outer ring, and the cutter head is provided with a cutter head cover;
the support rods are arranged between every two adjacent rotating rods and are connected with the two adjacent rotating rods through tension springs, the tension springs are fixedly connected with the circumferential surfaces of the rotating rods, the tension springs are in a stretching state, the two support rods connected with the same rotating rod are symmetrically arranged around the center of the rotating rod, one ends of the support rods penetrate through movable grooves formed in the cutter disc cover and are connected with cutters, the other ends of the support rods penetrate through grooves formed in the cutter disc, and the end parts of the support rods are connected with the inner walls of the grooves through reset springs;
the sliding rod is arranged on the supporting rod in the groove in a penetrating way, and the end part of the sliding rod is connected with the side wall of the groove in a sliding way;
when one of the cutters contacts a hard object, the cutters move upwards to drive a sliding rod on the supporting rod to slide in the groove, the connecting end of the tension spring and the supporting rod moves upwards in the moving process of the supporting rod, the rotating rods on two sides of the supporting rod are pulled to rotate, and the supporting rods on two sides of the supporting rod are pulled to move along the corresponding grooves to the cutters contacting the hard object and move downwards through the tension spring on the other side of the rotating rod.
Preferably, the cutter head comprises at least two concentric annular plates, a gap for discharging is formed between every two adjacent annular plates, the annular plates are connected through a plurality of connecting plates uniformly distributed around the centers of the annular plates, a plurality of grooves are formed in the positions close to the side edges of the connecting plates in a left-right staggered mode along the center line of the length direction of the connecting plates, and through grooves communicated with the gap are formed in the cutter head cover.
Preferably, the support assembly comprises: the support column, the mounting hole of wearing to establish the pivot has been seted up at the center of support column, still wear to be equipped with inlet tube and discharge pipeline on the support column.
Preferably, the transmission assembly comprises: the rotary table is sleeved and fixed at the end part of the rotary shaft, and a plurality of clamping claws connected with the outer ring of the annular plate are arranged in the circumferential direction of the rotary table.
Preferably, a plurality of groups of supports are arranged along the length direction of the connecting plate, each group of supports comprises two supports which are oppositely arranged, a rotating rod is rotatably connected between the two supports, and the axial direction of the rotating rod is perpendicular to the length direction of the connecting plate.
Preferably, two grooves on the same arc line on two adjacent connecting plates are arranged at positions close to the adjacent side edges of the two connecting plates or close to the side edges of the two connecting plates, which are away from each other.
Preferably, the width of the groove is greater than the diameter of the support rod.
The beneficial effects of the invention are as follows: according to the high-efficiency drilling bit provided by the invention, the plurality of rotating rods are arranged in parallel on the cutter head, the supporting rods are arranged between the two adjacent rotating rods, the cutters are arranged at the end parts of the supporting rods, and the rotating rods are connected with the supporting rods through the tension springs, so that the cutters are driven to rotate when the cutter head rotates, when one cutter touches a hard object, the two adjacent cutters approach to the cutter touching the hard object, and meanwhile, the supporting rods connecting the two cutters slide along the grooves, so that the cutting degree of the two cutters is deepened, the removal of soil on two sides of the hard object is improved, the falling-off of the hard object is facilitated, the drilling efficiency is improved, the damage of the bit is reduced, the practicability is high, and the high-efficiency drilling bit is worth popularizing.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is an exploded view of the general structure of an embodiment of a high efficiency drilling bit of the present invention;
FIG. 2 is a schematic view of the support assembly of FIG. 1;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
fig. 4 is a schematic view of the structure of fig. 1 with the cutterhead cover removed;
FIG. 5 is an enlarged view of a portion of FIG. 4 at C;
FIG. 6 is a schematic diagram of the general structure of FIG. 1;
FIG. 7 is a cross-sectional view of B-B in FIG. 6;
FIG. 8 is a partial enlarged view at D in FIG. 7;
fig. 9 is a perspective view of the construction of the cutterhead of fig. 1;
FIG. 10 is an enlarged view of a portion of FIG. 9 at E;
FIG. 11 is a schematic view of the construction of the cutterhead of FIG. 1;
FIG. 12 is an enlarged view of a portion of FIG. 11 at F;
fig. 13 is a state diagram of fig. 12 after the hard object is encountered.
In the figure: 10. a cutterhead cover; 11. a cutterhead; 111. a support; 112. a rotating lever; 113. a groove; 12. a transmission assembly; 13. a support assembly; 131. a water inlet pipe; 132. a discharge pipe; 14. a cutter; 141. a first tension spring; 142. a second tension spring; 143. a slide bar; 144. and a return spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of a high efficiency drilling bit of the present invention, as shown in FIG. 1, comprises: the support component 13 is rotatably provided with a rotating shaft, one end of the rotating shaft is used for being connected with a drill rod of drilling equipment, and the other end of the rotating shaft is connected with the transmission component 12; the output end of the transmission assembly 12 is connected with a cutter head 11, one surface of the cutter head 11, which is away from the transmission assembly 12, is provided with a plurality of rotating rods 112 which are arranged in parallel, the rotating rods 112 are sequentially arranged from the center of the cutter head 11 to the outer ring, as shown in fig. 4, a supporting rod is arranged between every two adjacent rotating rods 112, the supporting rod is connected with the two adjacent rotating rods 112 through a tension spring, the tension spring is fixedly connected with the circumferential surface of the rotating rods 112, the tension spring is in a stretching state, the two supporting rods connected with the same rotating rod 112 are symmetrically arranged relative to the center of the rotating rods 112, one end of each supporting rod penetrates out of a movable groove formed in the cutter head cover 10 and is connected with a cutter 14, as shown in fig. 6, 7 and 8, the other end of each supporting rod penetrates into a groove 113 formed in the cutter head 11, in particular, the width of each groove 113 is larger than the diameter of each supporting rod, and the end of each supporting rod is connected with the inner wall of each groove 113 through a reset spring 144; specifically, as shown in fig. 5, the support rod is connected to the right rotating rod 112 through a first tension spring 141, the left side of the support rod is connected to the left rotating rod 112 through a second tension spring 142, and as shown in fig. 7 and 8, a slide rod 143 is inserted through the support rod in the groove 113, it should be noted that the support rod can move along the slide rod 143, and then, the end of the slide rod 143 is slidably connected to the side wall of the groove 113, specifically, in the form of a slide groove.
It should be noted that, as shown in fig. 9, 10 and 11, when one of the cutters 14 contacts a hard object, the cutter 14 moves upward to drive the support rod to move, so that the slide rod 143 on the support rod slides upward in the groove 113, during the movement of the support rod, the connection ends of the second tension spring 142 and the first tension spring 141 connected with the support rod all move upward, the second tension spring 142 and the first tension spring 141 pull the corresponding rotating rods 112 on both sides of the support rod to rotate, and the rotating rods 112 rotate to pull the second tension spring 142 on the other side of the rotating rods 112 or the support rod connected with the first tension spring 141 to slide downward along the corresponding slide rod 143 in the groove 113, so that the adjacent cutters 14 move to the cutter 14 contacting the hard object and move downward.
Specifically, as shown in fig. 4 and 9, the cutterhead 11 includes at least two concentric ring plates, a gap for discharging is formed between two adjacent ring plates, the ring plates are connected by a plurality of connecting plates uniformly distributed around the center of the ring plates, wherein a plurality of grooves 113 are formed in a staggered manner left and right along the center line of the length direction of the connecting plates, and a through groove communicated with the gap is formed in the cutterhead cover 10. Wherein the transmission assembly 12 comprises: the rotary table at the pivot tip is fixed in the suit, the circumference of rotary table be provided with a plurality of jack catch with annular plate outer lane fixed connection, wherein, as shown in fig. 4, be provided with multiunit support 111 along connecting plate length direction, every group support 111 includes two supports 111 of relative setting, rotates between two supports 111 to be connected with dwang 112, the axial of dwang 112 is perpendicular with the length direction of connecting plate. The two grooves 113 on the same arc line on two adjacent connecting plates are formed at positions close to the adjacent sides of the two connecting plates or close to the sides of the two connecting plates, which are opposite to each other, and it is to be noted that, as shown in fig. 4, the positions of the grooves 113 on two adjacent supporting plates are different, specifically, when the groove 113 on one connecting plate starts from the end of the groove 113, if the first groove 113 starts to form on the left side of the center line of the length direction of the connecting plate, the corresponding groove 113 on the adjacent connecting plate starts to form on the right side of the center line of the length direction of the connecting plate from the end of the groove 113.
Specifically, as shown in fig. 2 and 3, the support assembly 13 includes: the support column, the mounting hole of wearing to establish the pivot has been seted up at the center of support column, still wear to be equipped with inlet tube 131 and row material pipeline 132 on the support column, specifically, inlet tube 131 is used for getting into between cutter 14 and the cutting face with water from clearance and logical groove, and row material pipeline 132 is used for discharging the earth and the injected water after the cutter 14 cuts.
Working principle:
when the device is used, the rotating shaft of the device is connected with the drill rod of the drilling equipment, the device drills in the horizontal direction, the drill rod of the drilling equipment drives the rotating shaft to rotate, the rotating shaft drives the cutter disc 11 and the cutter disc cover 10 to synchronously rotate through the transmission component 12, meanwhile, the cutter 14 on the cutter disc 11 rotates along with the cutter disc 11, in the drilling process, the water is injected into the water inlet pipe 131, and the discharging pipeline 132 is used for discharging the mixture such as soil, stone and the like entering from the through groove on the cutter disc cover 10 and the gap on the cutter disc 11.
When a harder hard object is touched during drilling, the cutter 14 contacting the harder object is jacked up by the harder object, the supporting rod connected with the cutter 14 ascends in the groove 113, the return spring 144 at the end of the supporting rod is compressed, and meanwhile, in the process of ascending by the jacked cutter 14, the first tension spring 141 and the second tension spring 142 which are connected with the supporting rod and positioned at two sides of the supporting rod can be stretched, and the rotating rod 112 connected with the other ends of the first tension spring 141 and the second tension spring 142 can rotate.
After the two rotating rods 112 rotate, the first tension springs 141 and the second tension springs 142 on the cutters 14 that are jacked up to the adjacent sides of the cutters 14 are stretched, as shown in fig. 10. At this time, the direction of the second tension spring 142 of the right cutter 14 of the jacked cutter 14 will be changed to the left downward, and the direction of the first tension spring 141 of the left cutter 14 of the jacked cutter 14 will be changed to the right downward, at this time, the first tension spring 141 gives a right downward force to the left cutter 14 in the direction of the jacked cutter 14, and the second tension spring 142 gives a left downward force to the right cutter 14 in the direction of the jacked cutter 14, so that the cutters 14 at both sides of the jacked cutter 14 will move along the downward direction, and the soil at both sides of the hard object will be drilled away and deeper into the soil, so that the hard object will drop more easily.
In the process of moving the two side cutters 14, the two side cutters 14 are pushed up along the direction of the sliding rod 143 by the jack-up cutters 14, as shown in fig. 12, after contacting with a hard object, the positions of the two side cutters 14 are shown in fig. 13, because the angles of connecting the grooves 113 where the two side cutters 14 are positioned to the circle center of the cutterhead 11 are different, the positions of the two side cutters 14 after contacting with the hard object are staggered, and when pushing up with the hard object, a rotating acting force is given to the hard object, so that the hard object is easier to fall off.
As shown in fig. 4, the dislocation of the cutters 14 on the two adjacent connection plates is opposite (i.e. the two connection plates rotate to the same position, and the support rods on the two connection plates are staggered), when the cutterhead 11 rotates anticlockwise, if the cutters 14 on two sides are more backward after the cutters 14 in fig. 5 are jacked, the cutters 14 on two sides approach to the jacked cutters 14 when the cutters are still at the position of a hard object; similarly, after the cutter 14 on the next connecting plate is contacted with the hard object and is jacked up, the cutters 14 on the two sides are more forward and still approach the jacked cutter 14 after leaving the position of the hard object, so that more clay around the hard object is drilled away, and the hard object is easier to drop.
In summary, according to the high-efficiency drilling bit provided by the embodiment of the invention, the plurality of rotating rods are arranged in parallel on the cutter head, the supporting rods are arranged between the two adjacent rotating rods, the cutters are arranged at the end parts of the supporting rods, and the rotating rods are connected with the supporting rods through the tension springs, so that the cutters are driven to rotate when the cutter head rotates, when one cutter touches a hard object, the two adjacent cutters approach to the cutter touching the hard object, and meanwhile, the supporting rods connecting the two cutters slide along the grooves, so that the cutting degree of the two cutters is deepened, the soil on two sides of the hard object is removed, meanwhile, the falling-off of the hard object is facilitated, the drilling efficiency is improved, the damage of the bit is reduced, the practicability is high, and the popularization is worth.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A high efficiency drilling bit, comprising:
a support assembly;
the rotating shaft is rotatably arranged on the supporting component, one end of the rotating shaft is used for being connected with a drill rod of drilling equipment, and the other end of the rotating shaft is connected with the transmission component;
the cutter head is connected to the output end of the transmission assembly, one surface of the cutter head, which is away from the transmission assembly, is provided with a plurality of rotating rods which are arranged in parallel, the rotating rods are sequentially arranged from the center of the cutter head to the outer ring, and the cutter head is provided with a cutter head cover;
the support rods are arranged between every two adjacent rotating rods and are connected with the two adjacent rotating rods through tension springs, the tension springs are fixedly connected with the circumferential surfaces of the rotating rods, the tension springs are in a stretching state, the two support rods connected with the same rotating rod are symmetrically arranged around the center of the rotating rod, one ends of the support rods penetrate through movable grooves formed in the cutter disc cover and are connected with cutters, the other ends of the support rods penetrate through grooves formed in the cutter disc, and the end parts of the support rods are connected with the inner walls of the grooves through reset springs;
the sliding rod is arranged on the supporting rod in the groove in a penetrating way, and the end part of the sliding rod is connected with the side wall of the groove in a sliding way;
when one of the cutters contacts a hard object, the cutters move upwards to drive a sliding rod on the supporting rod to slide in the groove, the connecting end of the tension spring and the supporting rod moves upwards in the moving process of the supporting rod, the rotating rods on two sides of the supporting rod are pulled to rotate, and the supporting rods on two sides of the supporting rod are pulled to move along the corresponding grooves to the cutters contacting the hard object and move downwards through the tension spring on the other side of the rotating rod.
2. The efficient drilling bit according to claim 1, wherein the cutter head comprises at least two annular plates which are concentrically arranged, a gap for discharging is formed between every two adjacent annular plates, the annular plates are connected through a plurality of connecting plates which are uniformly distributed around the centers of the annular plates, a plurality of grooves are formed in positions close to the side edges of the connecting plates in a left-right staggered mode along the center line of the length direction of the connecting plates, and through grooves communicated with the gap are formed in the cutter head cover.
3. The high efficiency drilling bit of claim 1, wherein the support assembly comprises: the support column, the mounting hole of wearing to establish the pivot has been seted up at the center of support column, still wear to be equipped with inlet tube and discharge pipeline on the support column.
4. The high efficiency drilling bit of claim 2, wherein the drive assembly comprises: the rotary table is sleeved and fixed at the end part of the rotary shaft, and a plurality of clamping claws connected with the outer ring of the annular plate are arranged in the circumferential direction of the rotary table.
5. The high-efficiency drilling bit according to claim 2, wherein a plurality of groups of supports are arranged along the length direction of the connecting plate, each group of supports comprises two supports which are arranged oppositely, a rotating rod is rotatably connected between the two supports, and the axial direction of the rotating rod is perpendicular to the length direction of the connecting plate.
6. The high-efficiency drilling bit of claim 2, wherein two grooves on the same circular arc line on two adjacent connecting plates are arranged at positions close to the adjacent side edges of the two connecting plates or close to the side edges of the two connecting plates facing away from each other.
7. An efficient drilling bit according to claim 1 wherein the width of the recess is greater than the diameter of the support rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311421412.8A CN117145395B (en) | 2023-10-31 | 2023-10-31 | High-efficiency drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311421412.8A CN117145395B (en) | 2023-10-31 | 2023-10-31 | High-efficiency drilling bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117145395A true CN117145395A (en) | 2023-12-01 |
| CN117145395B CN117145395B (en) | 2024-02-20 |
Family
ID=88906500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311421412.8A Active CN117145395B (en) | 2023-10-31 | 2023-10-31 | High-efficiency drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117145395B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201102069Y (en) * | 2007-01-23 | 2008-08-20 | 董祥义 | Turning work head with tool bit turned and lathe with the work head |
| CN102022121A (en) * | 2010-11-19 | 2011-04-20 | 南车资阳机车有限公司 | Cutter driving device of shield machine |
| CN212318001U (en) * | 2020-04-28 | 2021-01-08 | 中铁十二局集团第二工程有限公司 | Shield tunneling machine cutter head for waterless sandy cobble stratum |
| CN213627586U (en) * | 2020-11-09 | 2021-07-06 | 山东慧泰市政工程集团有限公司 | Rectangular pipe jacking cutter head |
| CN114278327A (en) * | 2021-12-22 | 2022-04-05 | 沭阳天勤工具有限公司 | Intelligent hard object detection drilling and excavating tool |
| CN218030192U (en) * | 2022-05-20 | 2022-12-13 | 中建隧道装备制造有限公司 | Shield constructs quick-witted blade disc suitable for mould nature clay firmly |
| CN218062316U (en) * | 2022-09-28 | 2022-12-16 | 中国铁建重工集团股份有限公司 | Cutter head of small-diameter shield tunneling machine |
-
2023
- 2023-10-31 CN CN202311421412.8A patent/CN117145395B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201102069Y (en) * | 2007-01-23 | 2008-08-20 | 董祥义 | Turning work head with tool bit turned and lathe with the work head |
| CN102022121A (en) * | 2010-11-19 | 2011-04-20 | 南车资阳机车有限公司 | Cutter driving device of shield machine |
| CN212318001U (en) * | 2020-04-28 | 2021-01-08 | 中铁十二局集团第二工程有限公司 | Shield tunneling machine cutter head for waterless sandy cobble stratum |
| CN213627586U (en) * | 2020-11-09 | 2021-07-06 | 山东慧泰市政工程集团有限公司 | Rectangular pipe jacking cutter head |
| CN114278327A (en) * | 2021-12-22 | 2022-04-05 | 沭阳天勤工具有限公司 | Intelligent hard object detection drilling and excavating tool |
| CN218030192U (en) * | 2022-05-20 | 2022-12-13 | 中建隧道装备制造有限公司 | Shield constructs quick-witted blade disc suitable for mould nature clay firmly |
| CN218062316U (en) * | 2022-09-28 | 2022-12-16 | 中国铁建重工集团股份有限公司 | Cutter head of small-diameter shield tunneling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117145395B (en) | 2024-02-20 |
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