CN209799874U - Slip casting pipe drill bit that road construction used - Google Patents
Slip casting pipe drill bit that road construction used Download PDFInfo
- Publication number
- CN209799874U CN209799874U CN201920680765.2U CN201920680765U CN209799874U CN 209799874 U CN209799874 U CN 209799874U CN 201920680765 U CN201920680765 U CN 201920680765U CN 209799874 U CN209799874 U CN 209799874U
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- drill
- plate
- pipe
- isolating
- road construction
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a slip casting pipe drill bit for road construction, which comprises a drill shaft, wherein a side cutter is arranged on the side surface of the drill shaft, an isolating device is arranged on the top surface of the drill shaft, a switching pipe is arranged on the top surface of the isolating device, a stirring device is arranged inside the drill shaft, a spraying device is arranged on the bottom surface of an inner cavity of the drill shaft, and the bottom end of the switching pipe penetrates through the isolating device and the stirring device and is connected with the spraying device; separate mud and thick liquid through isolating device, make mud and thick liquid can not mix, the slip casting quality of this slip casting pipe drill bit has been improved, through trigger device, can trigger agitating unit when making the switching pipe lift, the thick liquid through the agitating unit after triggering to the injection drilling stirs, make the thick liquid misce bene that deposits the segregation, the slip casting quality of this slip casting pipe drill bit has further been improved, make road construction, the quality of maintenance is fine, be difficult to damage in the use, the service life of road has been prolonged.
Description
Technical Field
The utility model relates to a slip casting pipe drill bit field, more specifically say, relate to a slip casting pipe drill bit that road construction used.
Background
The road grouting is an important link in the road construction and maintenance process, during the road grouting construction, the stratum is drilled by using special stratum drilling equipment, then a drill rod and a drill bit are taken out, and finally a grouting pipeline is laid in the drilled hole for grouting.
However, when the slip casting pipe drill bit carries out the slip casting after drilling into the stratum, the grout of injection mixes with mud easily, make the slip casting quality very poor, and do not have agitating unit, the condition of sediment segregation can take place for the in-process of thick liquid in the intraductal transportation of slip casting, the thick liquid of sediment segregation can make the slip casting quality further worsen after directly pouring into the drilling, lead to road construction, the quality of maintenance is very poor, damage in the use easily, make road life short, therefore need to design the slip casting pipe drill bit that a road construction used urgently.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
When the slip casting is carried out to current slip casting pipe drill bit that exists among the prior art after drilling into the stratum, the thick liquid of pouring into mixes with mud easily, makes the slip casting quality very poor, and does not have agitating unit, and the thick liquid can take place to deposit the condition of segregation at the in-process of slip casting intraductal transportation, and the thick liquid of depositing the segregation directly pours into and can make the slip casting quality further worsen into behind the drilling, leads to road construction, the quality of maintenance is very poor, damages in the use easily, makes the problem that road life is short, the utility model aims to provide a slip casting pipe drill bit that road construction used, the problem that provides in the solution background art that it can be fine.
2. technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
The utility model provides a slip casting pipe drill bit that road construction used, includes the drill spindle, the side of drill spindle is equipped with the side sword, and the top surface of drill spindle is equipped with isolating device, and isolating device's top surface is equipped with the switching pipe, and the inside of drill spindle is equipped with agitating unit, and the bottom surface of drill spindle inner chamber is equipped with injection apparatus, and isolating device and agitating unit are run through and are connected with injection apparatus to the bottom of switching pipe.
Preferably, the isolating device comprises an isolating plate, a strip-shaped rail and a limiting rail, the bottom surface of the isolating plate is connected with the top end of the drill spindle, an overflow hole is formed in the isolating plate, a mounting groove is formed in the top surface of the isolating plate and is communicated with the overflow hole, a fixing shaft is connected to the inner wall of the mounting groove, a rotating block and a torsion spring are movably sleeved outside the fixing shaft, one end of the torsion spring is connected with the rotating block, the other end of the torsion spring is connected with the inner wall of the mounting groove, a cover plate is connected to the end portion of the rotating block, a rubber pad is fixedly mounted on the bottom surface of the cover plate, a sealing corrugated pipe is connected to the middle of the top surface of the isolating plate, the other end of the sealing corrugated pipe is fixedly sleeved with an adapter pipe, a fixing hole is formed in the isolating plate and; the strip-shaped rail and the limiting rail are fixedly installed on the side face of the adapter tube, the limiting rail is located below the strip-shaped rail, the top end of the limiting rail is inclined, and the strip-shaped rail and the limiting rail are in sliding clamping connection with the fixing hole.
Preferably, the trigger device comprises a fixed cavity and a clamping and connecting plate, the fixed cavity is formed in the bottom surface of the partition plate, a sliding rod is connected to the inner wall of the fixed cavity, a sliding plate is slidably sleeved outside the sliding rod, the bottom end of the right side surface of the sliding plate is connected with the clamping and connecting rod, the top end of the right side surface of the sliding plate is connected with a trigger rod, the right end of the trigger rod extends to the outside of the fixed cavity, the right end of the trigger rod is an inclined surface, the right end surface of the trigger rod is in contact connection with the top end of the limiting rail, a positioning plate located inside the fixed cavity is fixedly sleeved outside the trigger rod, a reset spring located inside the fixed cavity is movably sleeved outside the trigger rod, and two ends of the reset spring are respectively connected with; the bottom of joint board is connected with agitating unit, has seted up the spliced eye on the joint board, and the spliced eye can peg graft with the inserted bar.
Preferably, the stirring device comprises a lifting block and a reinforcing hole, the lifting block is movably sleeved with the adapter tube, the lifting block is connected with the inner wall of the drill spindle in a sliding manner, the top surface of the lifting block is connected with the bottom end of the clamping plate, the bottom surface of the lifting block is connected with a stirring rod, the bottom end of the stirring rod extends to the outside of the drill spindle and is connected with a bottom cutter, a tension spring is movably sleeved on the outside of the stirring rod, the top end of the tension spring is connected with the bottom surface of the lifting block, the bottom end of the tension spring is connected with the bottom surface of the inner cavity of the drill spindle, and; the reinforcing hole is formed in the bottom surface of the drill shaft and can be connected with the top end of the bed knife in an inserting mode.
Preferably, the sealing member includes fixed sleeving, and fixed sleeving's bottom is connected with the bottom surface of boring spindle inner chamber, and fixed sleeving's top screw thread has cup jointed sealed lid, and fixed sleeving's inside is equipped with the packing, and the packing winding is in the outside of puddler.
Preferably, the spraying device comprises a positioning sleeve and a spray head, the bottom end of the positioning sleeve is connected with the bottom surface of the inner cavity of the drill spindle, the top end of the positioning sleeve is movably sleeved with the bottom end of the adapter tube, the inner wall of the positioning sleeve is connected with a partition plate, a water spraying cavity is formed below the partition plate, a communicating tube is inserted into the partition plate in a penetrating manner, the top end of the communicating tube is connected with a buffer corrugated tube, the top end of the buffer corrugated tube is connected with the bottom end of the adapter tube, a limiting plate is slidably connected into the positioning sleeve, and the limiting plate is; the spray head is inserted on the bottom surface of the drill shaft and communicated with the water spraying cavity.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
Separate mud and thick liquid through isolating device, make mud and thick liquid can not mix, the slip casting quality of this slip casting pipe drill bit has been improved, through trigger device, can trigger agitating unit when making the switching pipe lift, the thick liquid through the agitating unit after triggering to the injection drilling stirs, make the thick liquid misce bene that deposits the segregation, the slip casting quality of this slip casting pipe drill bit has further been improved, make road construction, the quality of maintenance is fine, be difficult to damage in the use, the service life of road has been prolonged.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the internal structure of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the internal structure of the isolation device of FIG. 1 according to the present invention;
Fig. 4 is an enlarged schematic view of the structure at a in fig. 3 according to the present invention;
fig. 5 is a top view of the present invention shown in fig. 3;
Fig. 6 is an enlarged schematic view of the structure at B in fig. 5 according to the present invention;
FIG. 7 is a schematic view of the internal structure of the sealing member of FIG. 2 according to the present invention
Fig. 8 is a schematic view of the internal structure of the injection device of fig. 2 according to the present invention.
the reference numbers in the figures illustrate:
1. A drill shaft; 2. side cutting; 3. an isolation device; 301. a separator plate; 302. an overflow aperture; 303. mounting grooves; 304. a fixed shaft; 305. rotating the block; 306. a torsion spring; 307. a cover plate; 308. a rubber pad; 309. sealing the corrugated pipe; 310. a fixing hole; 311. a track groove; 312. a strip rail; 313. a limit rail; 4. a transfer tube; 5. a stirring device; 51. a lifting block; 52. a stirring rod; 53. a bed knife; 54. a tension spring; 55. a seal member; 551. fixing the sleeve; 552. a sealing cover; 553. packing; 56. a reinforcement hole; 6. an injection device; 61. positioning the sleeve; 62. a spray head; 63. a partition plate; 64. a water spraying cavity; 65. a communicating pipe; 66. a buffer bellows; 67. a limiting plate; 7. a trigger device; 71. a fixed cavity; 72. a clamping and connecting plate; 73. a slide bar; 74. a slide plate; 75. a plug rod; 76. a trigger lever; 77. positioning a plate; 78. a return spring.
Detailed Description
the drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; rather than all embodiments. Based on the embodiment of the utility model; all other embodiments obtained by a person skilled in the art without making any inventive step; all belong to the protection scope of the utility model.
referring to fig. 1-8, a grouting pipe drill for road construction comprises a drill shaft 1, a side cutter 2 is arranged on the side surface of the drill shaft 1, an isolation device 3 is arranged on the top surface of the drill shaft 1, an adapter pipe 4 is arranged on the top surface of the isolation device 3, a stirring device 5 is arranged inside the drill shaft 1, a spraying device 6 is arranged on the bottom surface of an inner cavity of the drill shaft 1, and the bottom end of the adapter pipe 4 penetrates through the isolation device 3 and the stirring device 5 and is connected with the spraying device 6.
The isolating device 3 comprises an isolating plate 301, a strip-shaped rail 312 and a limit rail 313, the bottom surface of the isolating plate 301 is connected with the top end of the drill spindle 1, an overflow hole 302 is arranged inside the isolating plate 301, the top surface of the isolating plate 301 is provided with a mounting groove 303, the mounting groove 303 is communicated with the overflow hole 302, the inner wall of the mounting groove 303 is connected with a fixed shaft 304, a rotating block 305 and a torsion spring 306 are movably sleeved outside the fixed shaft 304, one end of the torsion spring 306 is connected with the rotating block 305, the other end of the torsion spring 306 is connected with the inner wall of the mounting groove 303, the end part of the rotating block 305 is connected with a cover plate 307, the bottom surface of the cover plate 307 is fixedly provided with a rubber pad 308, the middle part of the top surface of the isolating plate 301 is connected with a sealing corrugated pipe 309, the other end of the sealing corrugated pipe 309 is fixedly sleeved with the adapter pipe 4, the, the bottom of the isolation plate 301 is provided with a trigger device 7; the strip-shaped rail 312 and the limit rail 313 are fixedly installed on the side face of the adapter tube 4, the limit rail 313 is located below the strip-shaped rail 312, the top end of the limit rail 313 is inclined, and the strip-shaped rail 312 and the limit rail 313 are both in sliding clamping connection with the fixing hole 310.
The trigger device 7 comprises a fixed cavity 71 and a clamping plate 72, the fixed cavity 71 is arranged on the bottom surface of the partition plate 301, the inner wall of the fixed cavity 71 is connected with a slide rod 73, the outside of the slide rod 73 is slidably sleeved with a slide plate 74, the bottom end of the right side surface of the slide plate 74 is connected with an inserting rod 75, the top end of the right side surface of the slide plate 74 is connected with a trigger rod 76, the right end of the trigger rod 76 extends to the outside of the fixed cavity 71, the right end surface of the trigger rod 76 is an inclined surface, the right end surface of the trigger rod 76 is in contact connection with the top end of the limiting rail 313, the outside of the trigger rod 76 is fixedly sleeved with a positioning plate 77 positioned in the fixed cavity 71, the outside of the trigger rod 76 is movably sleeved with a return spring 78 positioned in the fixed cavity 71, and two ends of the return; the bottom end of the clamping plate 72 is connected with the stirring device 5, and the clamping plate 72 is provided with an insertion hole which can be inserted into the insertion rod 75.
The stirring device 5 comprises a lifting block 51 and a reinforcing hole 56, the lifting block 51 is movably sleeved with the adapter tube 4, the lifting block 51 is slidably connected with the inner wall of the drill spindle 1, the top surface of the lifting block 51 is connected with the bottom end of a clamping plate 72, the bottom surface of the lifting block 51 is connected with a stirring rod 52, the bottom end of the stirring rod 52 extends to the outside of the drill spindle 1 and is connected with a bottom cutter 53, a tension spring 54 is movably sleeved on the outside of the stirring rod 52, the top end of the tension spring 54 is connected with the bottom surface of the lifting block 51, the bottom end of the tension spring 54 is connected with the bottom surface of the inner cavity of the drill spindle 1, and a sealing element; the reinforcing hole 56 is formed on the bottom surface of the drill spindle 1, and the reinforcing hole 56 can be inserted into the top end of the bed knife 53.
The sealing member 55 comprises a fixed sleeve 551, the bottom end of the fixed sleeve 551 is connected with the bottom surface of the inner cavity of the drill shaft 1, the top end of the fixed sleeve 551 is in threaded sleeve connection with a sealing cover 552, a packing 553 is arranged inside the fixed sleeve 551, and the packing 553 is wound outside the stirring rod 52 and used for sealing.
The spraying device 6 comprises a positioning sleeve 61 and a spray head 62, the bottom end of the positioning sleeve 61 is connected with the bottom surface of the inner cavity of the drill spindle 1, the top end of the positioning sleeve 61 is movably sleeved with the bottom end of the adapter tube 4, the inner wall of the positioning sleeve 61 is connected with a partition plate 63, a water spraying cavity 64 is formed below the partition plate 63, a communicating tube 65 is inserted into the partition plate 63 in a penetrating manner, the top end of the communicating tube 65 is connected with a buffer corrugated tube 66, the top end of the buffer corrugated tube 66 is connected with the bottom end of the adapter tube 4, a limiting plate 67 is connected to the inside of the positioning sleeve 61 in a sliding manner; the spray head 62 is inserted on the bottom surface of the drill shaft 1 and is communicated with the water spray cavity 64.
the working principle is as follows:
firstly, the top end of the adapter tube 4 is fixedly connected with the grouting tube, then the drill bit is aligned with the drilling position and pressed downwards, then the ground provides an upward force to the bottom knife 53, the bottom knife 53 pushes the lifting block 51 to move upwards through the stirring rod 52, the lifting block 51 stretches the tension spring 54, the potential energy of the tension spring 54 is increased until the lifting block 51 is tightly attached to the bottom surface of the isolation plate 301, then the grouting tube continues to press the adapter tube 4, the drill spindle 1 is limited by the ground to be still, the adapter tube 4 drives the strip-shaped rail 312 and the limit rail 313 to move downwards, the right end of the trigger rod 76 is aligned with the gap between the strip-shaped rail 312 and the limit rail 313, then the reset spring 78 drives the trigger rod 76 to move rightwards through the positioning plate 77 under the action of the self elastic force, the right end of the trigger rod 76 is inserted into the gap between the strip-shaped rail 312 and the limit rail 313, the trigger rod 76 drives the, the end of the plug-in rod 75 is inserted into the plug-in hole on the clamping plate 72 to limit the lifting block 51, then the grouting pipe drives the drill bit to rotate at high speed, simultaneously high-pressure water is introduced into the adapter pipe 4 through the grouting pipe, the high-pressure water is sprayed out from the spray head 62 at high speed through the buffer corrugated pipe 66, the communicating pipe 65 and the water spraying cavity 64 to form a water knife, the water knife and the bottom knife 53 rotate together to drill efficiently, water and soil are mixed into slurry in the drilling process, the cover plate 307 is pushed open under the action of the self hydraulic pressure, the slurry flows to the upper part of the isolating device 3 through the overflow hole 302 and the mounting groove 303, then the rotating block 305 drives the cover plate 307 to turn over under the action of the torsion force of the torsion spring 306, the cover plate 307 is pressed at the top end of the overflow hole 302 to seal the overflow hole 302, the slurry can only flow upwards in one direction to separate the slurry from, then high-pressure water in the grouting pipe is changed into high-pressure slurry, the slurry passes through the adapter pipe 4, the buffer corrugated pipe 66, the communicating pipe 65 and the water spraying cavity 64 and is sprayed out from the spray head 62 to enter the drill hole, then the grouting pipe is lifted upwards while rotating, the adapter pipe 4 is driven by the grouting pipe to move upwards, the adapter pipe 4 is driven by the adapter pipe 4 to move upwards, then the limit rail 313 extrudes the trigger rod 76, the trigger rod 76 is stressed and moves towards the inside of the fixed cavity 71, the trigger rod 76 drives the inserting rod 75 to move leftwards through the sliding plate 74, the inserting rod 75 is separated from the clamping plate 72, then the lifting block 51 moves downwards under the action of the elastic force of the tension spring 54, the lifting block 51 pushes the stirring rod 52 to move downwards, the stirring rod 52 pushes the bottom knife 53 to move downwards, so that the stirring rod 52 and the bottom knife 53 are inserted into the slurry in the drill hole until the lifting block 51 is contacted with the top end of the positioning sleeve 61, and then the bottom knife 53, the slurry separated by precipitation is uniformly mixed, the grouting quality is favorably improved, and the grouting is stopped until the drill bit moves upwards to a specified position, so that the grouting pipe stops rotating, and the grouting work is completed.
The above; is only a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; according to the technical scheme of the utility model and the improvement conception, equivalent substitution or change is carried out; are all covered by the protection scope of the utility model.
Claims (6)
1. The utility model provides a slip casting pipe drill bit that road construction used, includes drill spindle (1), its characterized in that: the side of drill spindle (1) is equipped with side sword (2), and the top surface of drill spindle (1) is equipped with isolating device (3), and the top surface of isolating device (3) is equipped with switching pipe (4), and the inside of drill spindle (1) is equipped with agitating unit (5), and the bottom surface of drill spindle (1) inner chamber is equipped with injection apparatus (6), and isolation device (3) and agitating unit (5) are run through and are connected with injection apparatus (6) to the bottom of switching pipe (4).
2. The grouting pipe drill for road construction according to claim 1, characterized in that: the isolating device (3) comprises an isolating plate (301), a strip-shaped rail (312) and a limiting rail (313), the bottom surface of the isolating plate (301) is connected with the top end of the drill spindle (1), an overflow hole (302) is formed in the isolating plate (301), an installation groove (303) is formed in the top surface of the isolating plate (301), the installation groove (303) is communicated with the overflow hole (302), the inner wall of the installation groove (303) is connected with a fixed shaft (304), a rotating block (305) and a torsion spring (306) are movably sleeved outside the fixed shaft (304), one end of the torsion spring (306) is connected with the rotating block (305), the other end of the torsion spring (306) is connected with the inner wall of the installation groove (303), the end of the rotating block (305) is connected with a cover plate (307), a rubber pad (308) is fixedly installed on the bottom surface of the cover plate (307), and a sealing corrugated pipe (309, the other end of the sealing corrugated pipe (309) is fixedly sleeved with the adapter tube (4), a fixing hole (310) is formed in the isolating plate (301), the fixing hole (310) is movably sleeved with the adapter tube (4), a track groove (311) is formed in the inner wall of the fixing hole (310), and a trigger device (7) is arranged at the bottom of the isolating plate (301); the strip-shaped rail (312) and the limiting rail (313) are fixedly installed on the side face of the adapter tube (4), the limiting rail (313) is located below the strip-shaped rail (312), the top end of the limiting rail (313) is inclined, and the strip-shaped rail (312) and the limiting rail (313) are in sliding clamping connection with the fixing hole (310).
3. The drill bit for grouting pipes for road construction according to claim 2, characterized in that: trigger device (7) are including fixed chamber (71) and joint board (72), set up on the bottom surface of division board (301) fixed chamber (71), the inner wall connection of fixed chamber (71) has slide bar (73), slide bar (74) have been cup jointed in the outside slip of slide bar (73), the bottom of slide bar (74) right flank is connected with peg graft pole (75), the top of slide bar (74) right flank is connected with trigger bar (76), the right-hand member of trigger bar (76) extends to the outside of fixed chamber (71), the right-hand member of trigger bar (76) is the inclined plane, the right-hand member face of trigger bar (76) is connected with the top contact of spacing rail (313), the external fixation of trigger bar (76) is cup jointed and is located fixed chamber (71) inside locating plate (77), the outside of trigger bar (76) is cup jointed the activity and is located fixed chamber (71) inside reset spring (78), the both ends of reset spring (78) are connected with the right flank of locating plate (77) and the right flank of fixed chamber (71) inner chamber (ii) a The bottom end of the clamping plate (72) is connected with the stirring device (5), and the clamping plate (72) is provided with an inserting hole which can be inserted with the inserting rod (75).
4. The grouting pipe drill for road construction according to claim 1, characterized in that: the stirring device (5) comprises a lifting block (51) and a reinforcing hole (56), the lifting block (51) is movably sleeved with the adapter tube (4), the lifting block (51) is connected with the inner wall of the drill spindle (1) in a sliding mode, the top surface of the lifting block (51) is connected with the bottom end of the clamping plate (72), the bottom surface of the lifting block (51) is connected with a stirring rod (52), the bottom end of the stirring rod (52) extends to the outer portion of the drill spindle (1) and is connected with a bottom cutter (53), the outer portion of the stirring rod (52) is movably sleeved with a tension spring (54), the top end of the tension spring (54) is connected with the bottom surface of the lifting block (51), the bottom end of the tension spring (54) is connected with the bottom surface of the inner cavity of the drill spindle (1), and a sealing element (55); the reinforcing hole (56) is formed in the bottom surface of the drill shaft (1), and the reinforcing hole (56) can be inserted into the top end of the bottom cutter (53).
5. The drill bit for grouting pipes for road construction according to claim 4, wherein: the sealing element (55) comprises a fixed sleeve (551), the bottom end of the fixed sleeve (551) is connected with the bottom surface of the inner cavity of the drill spindle (1), a sealing cover (552) is sleeved on the top end of the fixed sleeve (551) in a threaded manner, a packing (553) is arranged inside the fixed sleeve (551), and the packing (553) is wound outside the stirring rod (52).
6. the grouting pipe drill for road construction according to claim 1, characterized in that: the spraying device (6) comprises a positioning sleeve (61) and a spray head (62), the bottom end of the positioning sleeve (61) is connected with the bottom surface of the inner cavity of the drill spindle (1), the top end of the positioning sleeve (61) is movably sleeved with the bottom end of the adapter tube (4), the inner wall of the positioning sleeve (61) is connected with a partition plate (63), a water spraying cavity (64) is formed below the partition plate (63), a communicating tube (65) penetrates through the inside of the partition plate (63), the top end of the communicating tube (65) is connected with a buffer corrugated tube (66), the top end of the buffer corrugated tube (66) is connected with the bottom end of the adapter tube (4), a limiting plate (67) is slidably connected inside the positioning sleeve (61), and the limiting plate (67) is fixedly sleeved with the adapter tube (; the spray head (62) is inserted on the bottom surface of the drill shaft (1) and is communicated with the water spray cavity (64).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680765.2U CN209799874U (en) | 2019-05-14 | 2019-05-14 | Slip casting pipe drill bit that road construction used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680765.2U CN209799874U (en) | 2019-05-14 | 2019-05-14 | Slip casting pipe drill bit that road construction used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209799874U true CN209799874U (en) | 2019-12-17 |
Family
ID=68832602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920680765.2U Expired - Fee Related CN209799874U (en) | 2019-05-14 | 2019-05-14 | Slip casting pipe drill bit that road construction used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209799874U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577333A (en) * | 2020-05-18 | 2020-08-25 | 北京市政建设集团有限责任公司 | Shield tunnel compaction grouting structure |
| CN114753367A (en) * | 2022-05-12 | 2022-07-15 | 中船黄埔文冲船舶有限公司 | Pile punching device |
| CN115095355A (en) * | 2022-07-14 | 2022-09-23 | 东华理工大学 | Tunnel construction is with mixing slip casting device |
-
2019
- 2019-05-14 CN CN201920680765.2U patent/CN209799874U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577333A (en) * | 2020-05-18 | 2020-08-25 | 北京市政建设集团有限责任公司 | Shield tunnel compaction grouting structure |
| CN111577333B (en) * | 2020-05-18 | 2022-01-18 | 北京市政建设集团有限责任公司 | Shield tunnel compaction grouting structure |
| CN114753367A (en) * | 2022-05-12 | 2022-07-15 | 中船黄埔文冲船舶有限公司 | Pile punching device |
| CN115095355A (en) * | 2022-07-14 | 2022-09-23 | 东华理工大学 | Tunnel construction is with mixing slip casting device |
| CN115095355B (en) * | 2022-07-14 | 2023-05-09 | 东华理工大学 | Mixed grouting device for tunnel construction |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 Termination date: 20200514 |
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| CF01 | Termination of patent right due to non-payment of annual fee |