CN112127394A - Prestressed high-strength concrete pipe pile - Google Patents
Prestressed high-strength concrete pipe pile Download PDFInfo
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- CN112127394A CN112127394A CN202011025571.2A CN202011025571A CN112127394A CN 112127394 A CN112127394 A CN 112127394A CN 202011025571 A CN202011025571 A CN 202011025571A CN 112127394 A CN112127394 A CN 112127394A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/08—Removing obstacles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
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Abstract
The invention provides a prestressed high-strength concrete pipe pile, which comprises a force application box and a strength monitor, wherein a lower force application plate is fixed at the bottom of the force application box through a first series of bolt groups, the upper surface of the lower force application plate is in contact with the bottom end of a lower end cover, the lower end cover is arranged at the bottom end of the concrete pipe pile, a cleaning box and a moving box are sequentially arranged in the pipe pile of the concrete pipe pile from top to bottom, an upper end cover is arranged at the top end of the concrete pipe pile, the top end of the upper end cover is in contact with the lower surface of an upper force application plate, the right part of the lower surface of the upper force application plate is fixedly connected with the top end of a pull rod, and the bottom end of the pull rod extends into the force application box. The technical scheme disclosed by the invention effectively solves the technical problems that the prior art does not have the capability of applying circulating prestress, cannot realize strength monitoring and displaceable automatic cleaning of the interior of a concrete pipe column and the like, and is beneficial to popularization and application.
Description
Technical Field
The invention relates to the technical field of pipe piles, in particular to a prestressed high-strength concrete pipe pile.
Background
With the development of economic construction, prestressed high-strength concrete pipe piles are beginning to be applied to railway systems in large quantities, and are expanded to the fields of industrial and civil buildings, municipal administration, metallurgy, ports, roads and the like. In Yangtze river delta and Zhujiang delta areas, due to the fact that geological conditions are suitable for the use characteristics of the pipe piles, the demand of the pipe piles is increased rapidly, and therefore a new industry is formed rapidly. According to incomplete statistics, more than 400 tubular pile production enterprises exist in China, and the tubular piles are produced by about 2.5 hundred million meters, and the output value reaches more than 300 hundred million RMB. Meanwhile, the annual output value of auxiliary products matched with the pipe pile industry is near 250 million yuan, so that the pipe pile becomes a new industry rich in dynasty, and the existing pipe pile accounts for about 50% of the output value of the national cement product industry.
The invention of the prestressed high-strength concrete pipe pile brings various conveniences to production and construction of people, and the prestressed high-strength concrete pipe pile plays an indispensable role in modern production and construction. However, the existing prestressed high-strength concrete pipe pile often does not have the capability of applying cyclic prestress, and cannot realize the technical problems of strength monitoring and automatic movable cleaning of the interior of the concrete pipe pile, so that in view of the above, research and improvement are carried out on the existing structure and defects, and a novel prestressed high-strength concrete pipe pile is provided, which can effectively solve the problems and is beneficial to popularization and application.
Disclosure of Invention
The invention aims to provide a prestressed high-strength concrete pipe pile, which solves the technical problems that the prior art does not have the capability of applying cyclic prestress, cannot realize strength monitoring and automatic movable cleaning of the interior of the concrete pipe pile and the like.
In order to achieve the purpose, the invention provides a prestressed high-strength concrete pipe pile which comprises a force application box and a strength monitor, wherein a lower force application plate is fixed at the bottom of the force application box through a first series of bolt groups, the upper surface of the lower force application plate is in contact with the bottom end of a lower end cover, the lower end cover is arranged at the bottom end of the concrete pipe column, a cleaning box and a motion box are sequentially arranged in the concrete pipe column from top to bottom, an upper end cover is arranged at the top end of the concrete pipe column, the top end of the upper end cover is in contact with the lower surface of an upper force application plate, the right part of the lower surface of the upper force application plate is fixedly connected with the top end of a pull rod, and the bottom end of the pull rod extends into the force application box.
The inside left surface of application of force case be fixed with left spring end block, the right flank of left spring end block and the left end fixed connection of first return spring, the right-hand member of first return spring and the left surface fixed connection of pneumatic cylinder, the bottom of pneumatic cylinder be provided with the pneumatic cylinder bottom plate, the upper surface of pneumatic cylinder and the lower surface contact of last spacing strip, the top power take off end of pneumatic cylinder be provided with the hydraulic stem, the top of hydraulic stem be provided with right adapter sleeve, the interior week of right adapter sleeve contact with the periphery of moment arm, the middle part of moment arm be provided with fixed rotating shaft, the periphery of the left part of moment arm and the interior week contact of left adapter sleeve, the top of left adapter sleeve and the bottom fixed connection of pull rod.
The inside left surface of application of force case be fixed with first motor bottom plate, the right flank of first motor bottom plate be provided with first motor, the right side power take off end of first motor be provided with the rotation axis, the right-hand member of rotation axis be provided with drive bevel gear, drive bevel gear's right flank and driven bevel gear's leading flank contact, driven bevel gear's trailing flank and the leading flank fixed connection of first motion section of thick bamboo, the periphery of first motion section of thick bamboo and the left part of conveyer belt interior circumference contact, the right part of conveyer belt interior circumference and the periphery contact of second motion section of thick bamboo, the top periphery of conveyer belt be provided with the friction disc, the upper surface of friction disc and the lower surface contact of pneumatic cylinder bottom plate.
The pipe column body of concrete column in be provided with first reinforcing bar, second reinforcing bar, third reinforcing bar, fourth reinforcing bar, the axial lead of first reinforcing bar, second reinforcing bar, third reinforcing bar, fourth reinforcing bar parallel, third reinforcing bar, fourth reinforcing bar between be provided with the intensity monitor.
The strength monitor is characterized in that a first applying box and a second applying box are arranged in the strength monitor, the upper surface of the first applying box is communicated with the lower surface of the upper air box through a first air duct, the upper part of the upper air box is provided with an upper sensing column, the upper end of the upper sensing column extends out of the top of the strength monitor, the left surface of the first applying box is communicated with the left surface of the left air box through a second air duct, the left part of the left air box is provided with a left sensing column, the left end of the left sensing column extends out of the left part of the strength monitor, the lower surface of the second applying box is communicated with the upper surface of the lower air box through a third air duct, the lower part of the lower air box is provided with a lower sensing column, the lower end of the lower sensing column extends out of the bottom of the strength monitor, and the right surface of the second applying box is communicated with the right surface of the right air box through a fourth air duct, the right part of right side gas tank be provided with right side response post, right side response post right-hand member stretch out from the right part of intensity monitor.
The inside of intensity monitoring appearance be provided with the intermediate box, the left part of intermediate box be provided with left movable post, the right part of intermediate box be provided with right movable post, the right-hand member of left movable post be fixed with left set-square, the left inclined plane of left set-square and the left inclined plane contact of trapezoidal plate, the left end of right movable post be fixed with right set-square, the left inclined plane of right set-square and the right left inclined plane contact of trapezoidal plate, the bottom of trapezoidal plate be provided with tension spring, tension spring be provided with the siren directly over, the bottom of siren be provided with siren start button.
The inside lower fixed surface of clean case have the second motor bottom plate, the top of second motor bottom plate be provided with the second motor, the top power take off of second motor be provided with the power shaft, the top of power shaft pass through welded fastening with the middle part of strengthening the arm and be connected, the both ends of strengthening the arm respectively with the inner peripheral left and right sides fixed connection of swivel becket, the upper surface of swivel becket and the bottom fixed connection of vertical swivel becket, the top left surface of vertical swivel becket be fixed with the first lantern ring, the inner periphery of the first lantern ring contact with the periphery of encircleing the arm, the bottom of encircleing the arm be provided with the second lantern ring, the inner periphery of the second lantern ring contact with the periphery of fixed guide ring, the top of encircleing the arm be provided with clean section of thick bamboo.
The inner rear surface of the motion box is provided with a first fixed central column and a second fixed central column, the periphery of the first fixed central column is provided with an auxiliary wheel, the periphery of the second fixed central column is provided with a motion wheel, the left end surface of the motion wheel is contacted with the outer right side surface of an outer friction sleeve, the inner peripheries of four vertex angles of the outer friction sleeve are respectively contacted with the peripheries of a first inner supporting column, a second inner supporting column, a third inner supporting column and a fourth inner supporting column, the lower part of the front surface of the outer friction sleeve is contacted with the rear surface of the middle part of a lower friction cylinder, the top left surface of the lower friction cylinder is contacted with the bottom right surface of an upper friction cylinder, the bottom end of the upper friction cylinder is provided with a supporting rotating shaft, the bottom end of the supporting rotating shaft is fixedly connected with the upper surface of the displacement base, and the bottom end of the upper friction cylinder is provided with a second transmission shaft, the bottom of second transmission shaft pass through the top fixed connection of shaft coupling and first transmission shaft, first transmission shaft set up the top power take off end at the engine, the bottom of engine and the last fixed surface of displacement base be connected, the rear surface of displacement base and the cooperation of the preceding surface contact of first guided way, second guided way.
The conveying belt, the auxiliary wheel, the moving wheel, the engine and the like are all assembled by the existing equipment, and therefore specific models and specifications are not described repeatedly.
The invention has the beneficial effects that:
1. the components of the prestressed high-strength concrete pipe pile are reliably connected, the detection and maintenance are very convenient, the realization cost is low, and the conveying belt, the auxiliary wheel, the moving wheel, the engine and the like which are involved in the equipment are all assembled by the existing equipment, so that the popularization and the application of the prestressed high-strength concrete pipe pile in the technical field of future pipe piles are facilitated;
2. the prestressed high-strength concrete pipe pile provided by the invention innovatively realizes the function of applying cyclic prestress on a concrete pipe column, and avoids the limitation that the prestress applied in the traditional technical scheme is too single, in particular, a left spring end block is fixed on the left side surface in a force application box, the right side surface of the left spring end block is fixedly connected with the left end of a first return spring, the right end of the first return spring is fixedly connected with the left side surface of a hydraulic cylinder, the upper surface of the hydraulic cylinder is contacted with the lower surface of an upper limit strip, a hydraulic rod is arranged at the power output end of the top of the hydraulic cylinder, a right connecting sleeve is arranged at the top end of the hydraulic rod, the inner periphery of the right connecting sleeve is contacted with the outer periphery of a moment arm, a fixed rotating shaft is arranged in the middle of the moment arm, the outer periphery of the left part of the moment arm is contacted with the inner periphery of the left connecting sleeve, and, a first motor bottom plate is fixed on the left side surface inside the force application box, a first motor is arranged on the right side surface of the first motor bottom plate, a rotating shaft is arranged at the right power output end of the first motor, a driving bevel gear is arranged at the right end of the rotating shaft, the right side surface of the driving bevel gear is contacted with the front side surface of a driven bevel gear, the rear side surface of the driven bevel gear is fixedly connected with the front side surface of a first moving cylinder, the outer periphery of the first moving cylinder is contacted with the left inner periphery of a conveying belt, the right inner periphery of the conveying belt is contacted with the outer periphery of a second moving cylinder, a friction plate is arranged on the outer periphery of the top of the conveying belt, the upper surface of the friction plate is contacted with the lower surface of a hydraulic cylinder bottom plate, the first motor works and drives the first moving cylinder to rotate clockwise through the meshing action of the driving bevel gear and the driven bevel gear, the conveying belt moves, after the contact friction is finished, the hydraulic cylinder is moved leftwards under the action of the first return spring to return, so that the hydraulic rod drives the moment arm to repeatedly swing around the fixed rotating shaft, and the left part of the moment arm drives the upper force application plate to apply cyclic prestress on the concrete pipe column through the pull-back rod connected with the left connecting sleeve;
3. the strength monitor is innovatively designed to achieve the effect of monitoring the strength inside a concrete pipe column, timely alarming can be carried out when the internal strength is too high, and the work safety can be guaranteed, and particularly, the strength monitor is internally provided with a first applying box and a second applying box, the upper surface of the first applying box is communicated with the lower surface of an upper air box through a first air duct, the upper part of the upper air box is provided with an upper sensing column, the upper end of the upper sensing column extends out of the top of the strength monitor, the left surface of the first applying box is communicated with the left surface of a left air box through a second air duct, the left part of the left air box is provided with a left sensing column, the left end of the left sensing column extends out of the left part of the strength monitor, the lower surface of the second applying box is communicated with the upper surface of a lower air box through a third air duct, the lower part of the lower air box is provided with a lower induction column, the lower end of the lower induction column extends out from the bottom of the intensity monitor, the right surface of the second applying box is communicated with the right surface of the right air box through a fourth air duct, the right part of the right air box is provided with a right induction column, the right end of the right induction column extends out from the right part of the intensity monitor, the inside of the intensity monitor is provided with a middle box, the left part of the middle box is provided with a left movable column, the right part of the middle box is provided with a right movable column, the right end of the left movable column is fixed with a left triangular plate, the right inclined surface of the left triangular plate is contacted with the left inclined surface of the trapezoidal plate, the left inclined surface of the right triangular plate is contacted with the right left inclined surface of the trapezoidal plate, the bottom end of the trapezoidal plate is provided with a tension spring, an alarm is arranged right above the tension spring, the bottom end of the alarm is provided with an alarm starting button, and further, the, at the moment, the upper induction column moves downwards and transmits air pressure to the left movable column through the upper air box, the first air duct and the first applying box, the left movable column pushes the trapezoidal plate to move upwards through the left triangular plate and presses an alarm starting button arranged at the bottom end of the alarm, and then the alarm gives an alarm sound to remind a user that the internal pressure of the current concrete pipe column is overhigh;
4. the prestressed high-strength concrete pipe pile can realize a movable automatic cleaning function based on a cleaning box and a moving box, and is favorable for guaranteeing the internal cleanliness of the pipe pile, and particularly, a second motor bottom plate is fixed on the lower surface inside the cleaning box, a second motor is arranged at the top of the second motor bottom plate, a power shaft is arranged at the power output end of the top of the second motor, the top end of the power shaft is fixedly connected with the middle part of a reinforcing arm through welding, the two ends of the reinforcing arm are respectively fixedly connected with the left part and the right part of the inner circumference of a rotating ring, the upper surface of the rotating ring is fixedly connected with the bottom end of a longitudinal rotating arm, a first lantern ring is fixed on the left side surface of the top end of the longitudinal rotating arm, the inner circumference of the first lantern ring is in contact with the outer circumference of a circular moving arm, a second lantern ring is arranged at the bottom end of the circular moving arm, and the, the top end of the annular moving arm is provided with a cleaning barrel, the rear surface inside the moving box is provided with a first fixed central post and a second fixed central post, the periphery of the first fixed central post is provided with an auxiliary wheel, the periphery of the second fixed central post is provided with a moving wheel, the left end surface of the moving wheel is contacted with the right side surface of the periphery of the outer friction sleeve, the inner peripheries of four vertex angles of the outer friction sleeve are respectively contacted with the peripheries of a first inner supporting column, a second inner supporting column, a third inner supporting column and a fourth inner supporting column, the lower part of the front surface of the outer friction sleeve is contacted with the rear surface of the middle part of the lower friction barrel, the left surface of the top part of the lower friction barrel is contacted with the right surface of the bottom part of the upper friction barrel, the bottom end of the upper friction barrel is provided with a supporting rotating shaft, the bottom end of the supporting rotating shaft is fixedly connected with the upper surface of the displacement base, the bottom, the first transmission shaft is arranged at the top power output end of the engine, the bottom end of the engine is fixedly connected with the upper surface of the displacement base, the rear surface of the displacement base is in contact fit with the front surfaces of the first guide rail and the second guide rail, the second motor works to drive the rotating ring to rotate, the rotating ring drives the annular moving arm to move along the fixed guide ring through the longitudinal rotating arm, furthermore, the cleaning barrel arranged at the top end of the annular moving arm cleans the interior of the concrete pipe column, in addition, the engine transmits the rotary motion to the lower friction barrel and the upper friction barrel through the first transmission shaft, the coupler and the second transmission shaft, a user can change the contact matching relationship of the lower friction barrel, the upper friction barrel and the outer friction sleeve by adjusting the up-and-down displacement of the displacement base, and then the motion direction of the outer friction sleeve is changed, and the vertical motion direction of the motion box and the cleaning box is changed through the contact friction action between the right end surface of the motion wheel and the inner part of the pipe column of the concrete pipe column.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below.
Drawings
FIG. 1 is a schematic diagram of an axial side projection structure of the overall structure of the device of the present invention.
Fig. 2 is a front view of the overall structure of the device of the present invention.
Fig. 3 is a left side view of the overall structure of the device of the present invention.
FIG. 4 is a schematic view of the internal structure of the force application box of the present invention.
Fig. 5 is a schematic top sectional view of a concrete pipe column according to the present invention.
Fig. 6 is a schematic front sectional view of a concrete pipe column according to the present invention.
Fig. 7 is a schematic view of the internal structure of the strength monitor according to the present invention.
Fig. 8 is a schematic view of the internal structure of the intermediate tank according to the present invention.
Fig. 9 is a schematic view of the internal structure of the concrete pipe column according to the present invention.
Fig. 10 is a schematic view of the internal structure of the cleaning tank according to the present invention.
Fig. 11 is a schematic view of the internal structure of the motion box according to the present invention.
1. Concrete column, 2, force application box, 3, pull rod, 4, upper force application plate, 5, first series of bolt sets, 6, lower force application plate, 7, left connecting sleeve, 8, moment arm, 9, fixed rotating shaft, 10, right connecting sleeve, 11, hydraulic rod, 12, upper limiting bar, 13, left spring end block, 14, first return spring, 15, hydraulic cylinder, 16, hydraulic cylinder bottom plate, 17, friction plate, 18, conveying belt, 19, first moving cylinder, 20, second moving cylinder, 21, driven bevel gear, 22, driving bevel gear, 23, rotating shaft, 24, first motor, 25, first motor bottom plate, 26, upper end cover, 27, lower end cover, 28, first reinforcing bar, 29, second reinforcing bar, 30, third reinforcing bar, 31, fourth reinforcing bar, 32, strength monitor, 33, upper induction column, 34, left induction column, 35, lower induction column, 36, A right induction column, 37, an upper air box, 38, a left air box, 39, a lower air box, 40, a right air box, 41, a first air duct, 42, a second air duct, 43, a third air duct, 44, a fourth air duct, 45, a first applying box, 46, a second applying box, 47, a left movable column, 48, a right movable column, 49, a middle box, 50, a left triangle, 51, a right triangle, 52, a trapezoid plate, 53, a tension spring, 54, an alarm, 55, an alarm start button, 56, a cleaning box, 57, a motion box, 58, a cleaning cylinder, 59, a ring movable arm, 60, a first collar, 61, a longitudinal rotating arm, 62, a second collar, 63, a fixed guide ring, 64, a rotating ring, 65, a reinforcing arm, 66, a power shaft, 67, a second motor, 68, a second motor base, 69, an auxiliary wheel, 70, a motion wheel, 71, a first fixed central column, 72, a second fixed central column, 73. the friction device comprises an outer friction sleeve, 74, a first inner supporting column, 75, a second inner supporting column, 76, a third inner supporting column, 77, a fourth inner supporting column, 78, an upper friction cylinder, 79, a lower friction cylinder, 80, a second transmission shaft, 81, a coupler, 82, a first transmission shaft, 83, an engine, 84, a supporting rotating shaft, 85, a displacement base, 86, a first guide rail, 87 and a second guide rail.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
referring to fig. 1 to 11, the prestressed high-strength concrete pipe pile provided by the invention comprises a force application box 2 and a strength monitor 32, wherein a lower force application plate 6 is fixed at the bottom of the force application box 2 through a first series of bolt groups 5, the upper surface of the lower force application plate 6 is in contact with the bottom end of a lower end cover 27, the lower end cover 27 is arranged at the bottom end of a concrete pipe column 1, a cleaning box 56 and a moving box 57 are sequentially arranged in the pipe column 1 from top to bottom, an upper end cover 26 is arranged at the top end of the concrete pipe column 1, the top end of the upper end cover 26 is in contact with the lower surface of an upper force application plate 4, the right part of the lower surface of the upper force application plate 4 is fixedly connected with the top end of a pull rod 3, and the bottom end of the pull rod 3 extends into the force application box 2.
Furthermore, a left spring end block 13 is fixed on the left side surface inside the force application box 2, the right side surface of the left spring end block 13 is fixedly connected with the left end of a first return spring 14, the right end of the first return spring 14 is fixedly connected with the left side surface of the hydraulic cylinder 15, the bottom end of the hydraulic cylinder 15 is provided with a hydraulic cylinder bottom plate 16, the upper surface of the hydraulic cylinder 15 is contacted with the lower surface of the upper limit strip 12, the power output end of the top of the hydraulic cylinder 15 is provided with a hydraulic rod 11, the top end of the hydraulic rod 11 is provided with a right connecting sleeve 10, the inner circumference of the right connecting sleeve 10 is contacted with the outer circumference of the moment arm 8, the middle part of moment arm 8 be provided with fixed pivot 9, the periphery of the left part of moment arm 8 and the interior circumference contact of left adapter sleeve 7, the top of left adapter sleeve 7 and the bottom fixed connection of back pull rod 3.
Further, a first motor base plate 25 is fixed to the left side face of the interior of the forcing box 2, a first motor 24 is arranged on the right side face of the first motor base plate 25, a rotating shaft 23 is arranged at a right power output end of the first motor 24, a drive bevel gear 22 is arranged at the right end of the rotating shaft 23, the right side face of the drive bevel gear 22 is in contact with the front side face of a driven bevel gear 21, the rear side face of the driven bevel gear 21 is fixedly connected with the front side face of a first moving barrel 19, the outer periphery of the first moving barrel 19 is in contact with the left inner periphery of a conveying belt 18, the right inner periphery of the conveying belt 18 is in contact with the outer periphery of a second moving barrel 20, a friction plate 17 is arranged on the outer periphery of the top of the conveying belt 18, and the upper surface of the friction plate 17 is in contact with the lower surface of the hydraulic cylinder base plate 16. Furthermore, the device can realize the function of applying cyclic prestress to the concrete pipe column 1, the first motor 24 works and drives the first moving cylinder 19 to rotate clockwise through the meshing action of the driving bevel gear 22 and the driven bevel gear 21, the conveying belt 18 moves and repeatedly transports the friction plate 17 to the right, the friction plate 17 is in contact friction with the hydraulic cylinder bottom plate 16 and drives the hydraulic cylinder 15 to move to the right, after the contact friction is finished, the hydraulic cylinder 15 moves leftwards under the action of the first return spring 14 to return, the hydraulic rod 11 drives the moment arm 8 to repeatedly swing around the fixed rotating shaft 9, and the left part of the moment arm 8 drives the upper force application plate 4 to apply cyclic prestress to the concrete pipe column 1 through the pull rod 3 connected with the left connecting sleeve 7.
Referring to fig. 1 to 11, further, a first steel bar 28, a second steel bar 29, a third steel bar 30 and a fourth steel bar 31 are disposed in the pipe column body of the concrete pipe column 1, the axial lines of the first steel bar 28, the second steel bar 29, the third steel bar 30 and the fourth steel bar 31 are parallel, and a strength monitor 32 is disposed between the third steel bar 30 and the fourth steel bar 31.
Furthermore, a first applying box 45 and a second applying box 46 are arranged in the strength monitor 32, the upper surface of the first applying box 45 is communicated with the lower surface of the upper air box 37 through a first air duct 41, an upper sensing column 33 is arranged on the upper portion of the upper air box 37, the upper end of the upper sensing column 33 extends out of the top of the strength monitor 32, the left surface of the first applying box 45 is communicated with the left surface of the left air box 38 through a second air duct 42, a left sensing column 34 is arranged on the left portion of the left air box 38, the left end of the left sensing column 34 extends out of the left portion of the strength monitor 32, the lower surface of the second applying box 46 is communicated with the upper surface of the lower air box 39 through a third air duct 43, a lower sensing column 35 is arranged on the lower portion of the lower air box 39, and the lower end of the lower sensing column 35 extends out of the bottom of the strength monitor 32, the right surface of the second application box 46 is communicated with the right surface of the right air box 40 through a fourth air duct 44, the right part of the right air box 40 is provided with a right induction column 36, and the right end of the right induction column 36 extends out of the right part of the strength monitor 32.
Further, intensity monitor 32's inside be provided with middle box 49, middle box 49's left part be provided with left movable post 47, middle box 49's right part be provided with right movable post 48, left movable post 47's right-hand member be fixed with left set-square 50, left set-square 50's right inclined plane and trapezoidal plate 52's left inclined plane contact, right movable post 48's left end be fixed with right set-square 51, right set-square 51's left inclined plane and trapezoidal plate 52's right left inclined plane contact, trapezoidal plate 52's bottom be provided with tension spring 53, tension spring 53 be provided with alarm 54 directly over, alarm 54's bottom be provided with alarm start button 55. Furthermore, the device of the invention can realize the function of monitoring the strength of the interior of the concrete column 1, taking the case of excessive stress at the upper part of the interior of the concrete column 1 as an example, at this time, the upper sensing column 33 moves downwards and transmits the air pressure to the left movable column 47 through the upper air box 37, the first air duct 41 and the first applying box 45, the left movable column 47 pushes the trapezoidal plate 52 to move upwards through the left triangular plate 50 and presses the alarm starting button 55 arranged at the bottom end of the alarm 54, and then the alarm 54 gives an alarm sound to remind a user that the pressure in the interior of the concrete column 1 is excessively high currently.
Referring to fig. 1 to 11, further, a second motor base plate 68 is fixed to the inner lower surface of the cleaning tank 56, a second motor 67 is disposed at the top of the second motor base plate 68, a power shaft 66 is disposed at the top power output end of the second motor 67, the top end of the power shaft 66 is fixedly connected to the middle of the reinforcing arm 65 by welding, two ends of the reinforcing arm 65 are fixedly connected to the left and right portions of the inner circumference of the rotating ring 64, respectively, the upper surface of the rotating ring 64 is fixedly connected to the bottom end of the longitudinal rotating arm 61, a first collar 60 is fixed to the left side surface of the top end of the longitudinal rotating arm 61, the inner circumference of the first collar 60 is in contact with the outer circumference of the looping arm 59, a second collar 62 is disposed at the bottom end of the looping arm 59, the inner circumference of the second collar 62 is in contact with the outer circumference of the fixed guide ring 63, the top end of the annular moving arm 59 is provided with a cleaning cylinder 58.
Furthermore, a first fixed central column 71 and a second fixed central column 72 are arranged on the inner rear surface of the moving box 57, an auxiliary wheel 69 is arranged on the outer periphery of the first fixed central column 71, a moving wheel 70 is arranged on the outer periphery of the second fixed central column 72, the left end surface of the moving wheel 70 contacts with the outer right side surface of the outer friction sleeve 73, the inner peripheries of four vertex angles of the outer friction sleeve 73 respectively contact with the outer peripheries of a first inner supporting column 74, a second inner supporting column 75, a third inner supporting column 76 and a fourth inner supporting column 77, the lower part of the front surface of the outer friction sleeve 73 contacts with the rear surface of the middle part of the lower friction cylinder 79, the top left surface of the lower friction cylinder 79 contacts with the bottom right surface of the upper friction cylinder 78, a supporting rotating shaft 84 is arranged at the bottom end of the upper friction cylinder 78, the bottom end of the supporting rotating shaft 84 is fixedly connected with the upper surface of the displacement base 85, the bottom of an upper friction cylinder 78 be provided with second transmission shaft 80, the top fixed connection of shaft coupling 81 and first transmission shaft 82 is passed through to the bottom of second transmission shaft 80, first transmission shaft 82 set up the top power take off end at engine 83, the bottom of engine 83 be connected with the last fixed surface of displacement base 85, the rear surface of displacement base 85 and the cooperation of the preceding surface contact of first guided way 86, second guided way 87. Furthermore, the device of the invention can realize the function of automatic cleaning in a displacement way, the second motor 67 works and drives the rotating ring 64 to rotate, the rotating ring 64 drives the ring moving arm 59 to move along the fixed guide ring 63 through the longitudinal rotating arm 61, furthermore, the cleaning cylinder 58 arranged at the top end of the surrounding arm 59 cleans the interior of the concrete pipe column 1, the engine 83 transmits the rotary motion to the lower friction cylinder 79 and the upper friction cylinder 78 through the first transmission shaft 82, the coupling 81 and the second transmission shaft 80, and a user can change the contact matching relationship between the lower friction cylinder 79, the upper friction cylinder 78 and the outer friction sleeve 73 by adjusting the vertical displacement of the displacement base 85, further, the movement direction of the outer friction sleeve 73 is changed, and the vertical movement direction of the movement box 57 and the cleaning box 56 is changed by the contact friction action between the right end surface of the movement wheel 70 and the column interior of the concrete column 1.
The conveyor belt 18, the auxiliary wheel 69, the moving wheel 70, the engine 83 and the like are all assembled by existing equipment, and therefore specific models and specifications are not described in detail.
The working principle of the invention is as follows:
the invention provides a prestressed high-strength concrete pipe pile, which comprises a force application box 2 and a strength monitor 32, wherein a lower force application plate 6 is fixed at the bottom of the force application box 2 through a first series of bolt groups 5, the upper surface of the lower force application plate 6 is contacted with the bottom end of a lower end cover 27, the lower end cover 27 is arranged at the bottom end of a concrete pipe column 1, a cleaning box 56 and a moving box 57 are sequentially arranged in the pipe column of the concrete pipe column 1 from top to bottom, an upper end cover 26 is arranged at the top end of the concrete pipe column 1, the top end of the upper end cover 26 is contacted with the lower surface of an upper force application plate 4, the right part of the lower surface of the upper force application plate 4 is fixedly connected with the top end of a pull rod 3, the bottom end of the pull rod 3 extends into the force application box 2, a left spring end block 13 is fixed on the left side surface in the force application box 2, the right side surface of the left spring end block 13 is fixedly connected with the left end of a first return spring 14, the right end of the first return spring 14 is fixedly connected with the left side face of the hydraulic cylinder 15, a hydraulic cylinder bottom plate 16 is arranged at the bottom end of the hydraulic cylinder 15, the upper surface of the hydraulic cylinder 15 is in contact with the lower surface of the upper limiting strip 12, a hydraulic rod 11 is arranged at the top power output end of the hydraulic cylinder 15, a right connecting sleeve 10 is arranged at the top end of the hydraulic rod 11, the inner periphery of the right connecting sleeve 10 is in contact with the outer periphery of the moment arm 8, a fixed rotating shaft 9 is arranged in the middle of the moment arm 8, the outer periphery of the left part of the moment arm 8 is in contact with the inner periphery of the left connecting sleeve 7, the top end of the left connecting sleeve 7 is fixedly connected with the bottom end of the pull rod 3, a first motor bottom plate 25 is fixed on the left side face inside the force application box 2, a first motor 24 is arranged on the right side face of the first motor bottom plate 25, and a rotating shaft 23 is arranged at the right power output, the right end of the rotating shaft 23 is provided with a driving bevel gear 22, the right side surface of the driving bevel gear 22 is contacted with the front side surface of a driven bevel gear 21, the rear side surface of the driven bevel gear 21 is fixedly connected with the front side surface of a first moving cylinder 19, the outer periphery of the first moving cylinder 19 is contacted with the inner periphery of the left part of a conveying belt 18, further, the device can apply a circulating prestress function to the concrete pipe column 1, a first motor 24 works and drives the first moving cylinder 19 to rotate clockwise through the meshing action of the driving bevel gear 22 and the driven bevel gear 21, the conveying belt 18 moves and repeatedly conveys a friction plate 17 to the right, the friction plate 17 is in contact friction with a hydraulic cylinder bottom plate 16 and drives a hydraulic cylinder 15 to move to the right, the hydraulic cylinder 15 moves to the left to reset under the action of a first return spring 14 after the contact friction is finished, and then the hydraulic rod 11 drives a torque arm 8 to repeatedly swing around a fixed rotating shaft 9, the left part of the moment arm 8 drives the upper force application plate 4 to apply cyclic prestress on the concrete pipe column 1 through the pull-back rod 3 connected with the left connecting sleeve 7.
The concrete pipe column 1 is characterized in that a first reinforcing bar 28, a second reinforcing bar 29, a third reinforcing bar 30 and a fourth reinforcing bar 31 are arranged in a pipe column body of the concrete pipe column 1, the axial lines of the first reinforcing bar 28, the second reinforcing bar 29, the third reinforcing bar 30 and the fourth reinforcing bar 31 are parallel, an intensity monitor 32 is arranged between the third reinforcing bar 30 and the fourth reinforcing bar 31, a first applying box 45 and a second applying box 46 are arranged in the intensity monitor 32, the upper surface of the first applying box 45 is communicated with the lower surface of an upper air box 37 through a first air duct 41, an upper sensing column 33 is arranged on the upper portion of the upper air box 37, the upper end of the upper sensing column 33 extends out of the top of the intensity monitor 32, the left surface of the first applying box 45 is communicated with the left surface of a left air box 38 through a second air duct 42, a left sensing column 34 is arranged on the left portion of the left air box 38, the left end of the left induction column 34 extends out from the left part of the strength monitor 32, the lower surface of the second applying box 46 is communicated with the upper surface of the lower air box 39 through a third air duct 43, the lower part of the lower air box 39 is provided with the lower induction column 35, the lower end of the lower induction column 35 extends out from the bottom of the strength monitor 32, the right surface of the second applying box 46 is communicated with the right surface of the right air box 40 through a fourth air duct 44, the right part of the right air box 40 is provided with the right induction column 36, the right end of the right induction column 36 extends out from the right part of the strength monitor 32, the inside of the strength monitor 32 is provided with an intermediate box 49, the left part of the intermediate box 49 is provided with a left movable column 47, the right part of the intermediate box 49 is provided with a right movable column 48, the right end of the left movable column 47 is fixed with a left triangular plate 50, the right inclined surface of the left triangular plate 50 is in contact with the left inclined surface of a trapezoidal plate 52, the left end of the right movable column 48 is fixed with a right triangular plate 51, and further, the device can achieve the effect of monitoring the strength inside the concrete column 1, taking the case of excessive stress above the inside of the concrete column 1 as an example, at this time, the upper induction column 33 moves downwards and transmits air pressure to the left movable column 47 through the upper air box 37, the first air duct 41 and the first applying box 45, the left movable column 47 pushes the trapezoidal plate 52 to move upwards through the left triangular plate 50 and presses an alarm starting button 55 arranged at the bottom end of an alarm 54, and then the alarm 54 gives an alarm sound to remind a user that the pressure inside the concrete column 1 is overhigh.
A second motor base plate 68 is fixed on the lower surface of the interior of the cleaning box 56, a second motor 67 is arranged on the top of the second motor base plate 68, a power shaft 66 is arranged on the power output end of the top of the second motor 67, the top end of the power shaft 66 is fixedly connected with the middle part of the reinforcing arm 65 through welding, two ends of the reinforcing arm 65 are fixedly connected with the left part and the right part of the inner circumference of the rotating ring 64 respectively, the upper surface of the rotating ring 64 is fixedly connected with the bottom end of the longitudinal rotating arm 61, a first collar 60 is fixed on the left side surface of the top end of the longitudinal rotating arm 61, the inner circumference of the first collar 60 is in contact with the outer circumference of the ring moving arm 59, a second collar 62 is arranged at the bottom end of the ring moving arm 59, the inner circumference of the second collar 62 is in contact with the outer circumference of the fixed guide ring 63, a cleaning cylinder 58 is arranged at the top end of the ring moving arm 59, a first fixed central column 71 and a second fixed central column 72 are arranged on the rear surface inside the moving box 57, an auxiliary wheel 69 is arranged on the outer periphery of the first fixed central column 71, a moving wheel 70 is arranged on the outer periphery of the second fixed central column 72, the left end surface of the moving wheel 70 is in contact with the right side surface of the outer periphery of an outer friction sleeve 73, the inner peripheries of four vertex angles of the outer friction sleeve 73 are in contact with the outer peripheries of a first inner supporting column 74, a second inner supporting column 75, a third inner supporting column 76 and a fourth inner supporting column 77 respectively, the lower part of the front surface of the outer friction sleeve 73 is in contact with the rear surface of the middle part of a lower friction cylinder 79, the left surface of the top part of the lower friction cylinder 79 is in contact with the right surface of the bottom part of an upper friction cylinder 78, a supporting rotating shaft 84 is arranged at the bottom end of the upper friction cylinder 78, and the bottom end of the supporting rotating shaft 84 is fixedly connected with the, the bottom end of the upper friction cylinder 78 is provided with a second transmission shaft 80, the bottom end of the second transmission shaft 80 is fixedly connected with the top end of a first transmission shaft 82 through a coupler 81, further, the inventive device can realize the displacement type automatic cleaning function, a second motor 67 works and drives a rotating ring 64 to rotate, the rotating ring 64 drives a ring moving arm 59 to move along a fixed guide ring 63 through a longitudinal rotating arm 61, and then a cleaning cylinder 58 arranged at the top end of the ring moving arm 59 cleans the interior of the concrete pipe column 1, in addition, an engine 83 transmits the rotating motion to the lower friction cylinder 79 and the upper friction cylinder 78 through the first transmission shaft 82, the coupler 81 and the second transmission shaft 80, a user can change the contact matching relationship of the lower friction cylinder 79, the upper friction cylinder 78 and an outer friction sleeve 73 by adjusting the up-down displacement of a displacement base 85, further, the movement direction of the outer friction sleeve 73 is changed, and the vertical movement direction of the movement box 57 and the cleaning box 56 is changed by the contact friction action between the right end surface of the movement wheel 70 and the column interior of the concrete column 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A prestressed high-strength concrete pipe pile is characterized by comprising a force application box (2) and a strength monitor (32), the bottom of the force application box (2) is fixed with a lower force application plate (6) through a first series of bolt groups (5), the upper surface of the lower force application plate (6) is contacted with the bottom end of the lower end cover (27), the lower end cover (27) is arranged at the bottom end of the concrete pipe column (1), the pipe column of the concrete pipe column (1) is internally provided with a cleaning box (56) and a moving box (57) from top to bottom in sequence, the top end of the concrete pipe column (1) is provided with an upper end cover (26), the top end of the upper end cover (26) is contacted with the lower surface of the upper force application plate (4), the right part of the lower surface of the upper force application plate (4) is fixedly connected with the top end of the pull-back rod (3), the bottom end of the pull-back rod (3) extends into the force application box (2).
2. The prestressed high-strength concrete pipe pile according to claim 1, characterized in that: the left spring end block (13) is fixed on the left side face inside the force application box (2), the right side face of the left spring end block (13) is fixedly connected with the left end of the first return spring (14), the right end of the first return spring (14) is fixedly connected with the left side face of the hydraulic cylinder (15), a hydraulic cylinder bottom plate (16) is arranged at the bottom end of the hydraulic cylinder (15), the upper surface of the hydraulic cylinder (15) is in contact with the lower surface of the upper limiting strip (12), a hydraulic rod (11) is arranged at the top power output end of the hydraulic cylinder (15), a right connecting sleeve (10) is arranged at the top end of the hydraulic rod (11), the inner periphery of the right connecting sleeve (10) is in contact with the outer periphery of the moment arm (8), a fixed rotating shaft (9) is arranged in the middle of the moment arm (8), the outer periphery of the left part of the moment arm (8) is in contact with the inner periphery of the left connecting sleeve (7), the top end of the left connecting sleeve (7) is fixedly connected with the bottom end of the pull-back rod (3).
3. The prestressed high-strength concrete pipe pile according to claim 1, characterized in that: the left side face of the interior of the force application box (2) is fixed with a first motor base plate (25), the right side face of the first motor base plate (25) is provided with a first motor (24), the right power output end of the first motor (24) is provided with a rotating shaft (23), the right end of the rotating shaft (23) is provided with a drive bevel gear (22), the right side face of the drive bevel gear (22) is in contact with the front side face of a driven bevel gear (21), the rear side face of the driven bevel gear (21) is fixedly connected with the front side face of a first moving cylinder (19), the periphery of the first moving cylinder (19) is in contact with the left inner periphery of the conveying belt (18), the right inner periphery of the conveying belt (18) is in contact with the periphery of a second moving cylinder (20), and the top periphery of the conveying belt (18) is provided with a friction plate (17), the upper surface of the friction plate (17) is contacted with the lower surface of the hydraulic cylinder bottom plate (16).
4. The prestressed high-strength concrete pipe pile according to claim 1, characterized in that: the concrete pipe column is characterized in that a first reinforcing steel bar (28), a second reinforcing steel bar (29), a third reinforcing steel bar (30) and a fourth reinforcing steel bar (31) are arranged in a pipe column body of the concrete pipe column (1), the axial leads of the first reinforcing steel bar (28), the second reinforcing steel bar (29), the third reinforcing steel bar (30) and the fourth reinforcing steel bar (31) are parallel, and a strength monitor (32) is arranged between the third reinforcing steel bar (30) and the fourth reinforcing steel bar (31).
5. The prestressed high-strength concrete pipe pile according to claim 1, characterized in that: the strength monitoring instrument is characterized in that a first applying box (45) and a second applying box (46) are arranged in the strength monitoring instrument (32), the upper surface of the first applying box (45) is communicated with the lower surface of an upper air box (37) through a first air duct (41), an upper sensing column (33) is arranged on the upper portion of the upper air box (37), the upper end of the upper sensing column (33) extends out of the top of the strength monitoring instrument (32), the left surface of the first applying box (45) is communicated with the left surface of a left air box (38) through a second air duct (42), a left sensing column (34) is arranged on the left portion of the left air box (38), the left end of the left sensing column (34) extends out of the left portion of the strength monitoring instrument (32), the lower surface of the second applying box (46) is communicated with the upper surface of a lower air box (39) through a third air duct (43), and a lower sensing column (35) is arranged on the lower portion of the lower air box (39), lower extreme of lower response post (35) stretch out from the bottom of intensity monitor (32), the second right surface of applying case (46) through the right surface intercommunication of fourth air duct (44) and right gas case (40), the right part of right gas case (40) be provided with right response post (36), right response post (36) right-hand member stretch out from the right part of intensity monitor (32).
6. The prestressed high-strength concrete pipe pile according to claim 1, characterized in that: the inside of intensity monitoring appearance (32) be provided with middle box (49), the left part of middle box (49) be provided with left movable post (47), the right part of middle box (49) be provided with right movable post (48), the right-hand member of left movable post (47) be fixed with left set-square (50), the left inclined plane of left set-square (50) and the left inclined plane contact of trapezoidal plate (52), the left end of right movable post (48) be fixed with right set-square (51), the left inclined plane of right set-square (51) and the right left inclined plane contact of trapezoidal plate (52), the bottom of trapezoidal plate (52) be provided with tension spring (53), tension spring (53) be provided with alarm (54) directly over, the bottom of alarm (54) be provided with alarm start button (55).
7. The prestressed high-strength concrete pipe pile according to claim 1, characterized in that: a second motor base plate (68) is fixed on the lower surface of the interior of the cleaning box (56), a second motor (67) is arranged at the top of the second motor base plate (68), a power shaft (66) is arranged at the power output end of the top of the second motor (67), the top end of the power shaft (66) is fixedly connected with the middle part of a reinforcing arm (65) through welding, two ends of the reinforcing arm (65) are fixedly connected with the left part and the right part of the inner periphery of a rotating ring (64) respectively, the upper surface of the rotating ring (64) is fixedly connected with the bottom end of a longitudinal rotating arm (61), a first lantern ring (60) is fixed on the left side surface of the top end of the longitudinal rotating arm (61), the inner periphery of the first lantern ring (60) is contacted with the outer periphery of a ring moving arm (59), and a second lantern ring (62) is arranged at the bottom end of the ring moving arm (59), the inner circumference of the second lantern ring (62) is in contact with the outer circumference of the fixed guide ring (63), and the top end of the ring moving arm (59) is provided with a cleaning cylinder (58).
8. The prestressed high-strength concrete pipe pile according to claim 1, characterized in that: the inner rear surface of the moving box (57) is provided with a first fixed central column (71) and a second fixed central column (72), the outer periphery of the first fixed central column (71) is provided with an auxiliary wheel (69), the outer periphery of the second fixed central column (72) is provided with a moving wheel (70), the left end surface of the moving wheel (70) is contacted with the outer right side surface of an outer friction sleeve (73), the inner peripheries of four vertex angles of the outer friction sleeve (73) are respectively contacted with the outer peripheries of a first inner supporting column (74), a second inner supporting column (75), a third inner supporting column (76) and a fourth inner supporting column (77), the lower part of the front surface of the outer friction sleeve (73) is contacted with the rear surface of the middle part of a lower friction cylinder (79), the top left surface of the lower friction cylinder (79) is contacted with the bottom right surface of an upper friction cylinder (78), the bottom of an upper friction cylinder (78) be provided with support pivot (84), the bottom of support pivot (84) be connected with the last fixed surface of displacement base (85), the bottom of an upper friction cylinder (78) be provided with second transmission shaft (80), the bottom of second transmission shaft (80) pass through shaft coupling (81) and the top fixed connection of first transmission shaft (82), first transmission shaft (82) set up the top power take off end at engine (83), the bottom of engine (83) be connected with the last fixed surface of displacement base (85), the rear surface of displacement base (85) and the cooperation of the front surface contact of first guided way (86), second guided way (87).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011025571.2A CN112127394A (en) | 2020-09-25 | 2020-09-25 | Prestressed high-strength concrete pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011025571.2A CN112127394A (en) | 2020-09-25 | 2020-09-25 | Prestressed high-strength concrete pipe pile |
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| Publication Number | Publication Date |
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| CN112127394A true CN112127394A (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011025571.2A Withdrawn CN112127394A (en) | 2020-09-25 | 2020-09-25 | Prestressed high-strength concrete pipe pile |
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| CN (1) | CN112127394A (en) |
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| KR20110072136A (en) * | 2009-12-22 | 2011-06-29 | 성균관대학교산학협력단 | Loading device for pile load test |
| CN206325911U (en) * | 2016-12-02 | 2017-07-14 | 王群钢 | A kind of plastic conduit inner tubal wall cleaning device |
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| CN108532589A (en) * | 2018-05-25 | 2018-09-14 | 北京市地质工程公司 | A kind of hollowcore precast pile pile being equipped with pile body stress meter and its processing method |
| CN207891939U (en) * | 2018-02-09 | 2018-09-21 | 成都群星工程建设监理咨询有限公司 | Test the CYCLIC LOADING system of pile-soil interaction power in foundation construction construction |
| CN109523832A (en) * | 2019-01-08 | 2019-03-26 | 荆门思安机械设备有限公司 | A kind of alarm obstruction system for preventing Overheight Vehicles from hitting bridge tunnel |
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2020
- 2020-09-25 CN CN202011025571.2A patent/CN112127394A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110072136A (en) * | 2009-12-22 | 2011-06-29 | 성균관대학교산학협력단 | Loading device for pile load test |
| CN206325911U (en) * | 2016-12-02 | 2017-07-14 | 王群钢 | A kind of plastic conduit inner tubal wall cleaning device |
| CN107537831A (en) * | 2017-09-30 | 2018-01-05 | 赵卫祥 | High-efficiency washing device inside a kind of petroleum pipeline |
| CN207891939U (en) * | 2018-02-09 | 2018-09-21 | 成都群星工程建设监理咨询有限公司 | Test the CYCLIC LOADING system of pile-soil interaction power in foundation construction construction |
| CN108532589A (en) * | 2018-05-25 | 2018-09-14 | 北京市地质工程公司 | A kind of hollowcore precast pile pile being equipped with pile body stress meter and its processing method |
| CN109523832A (en) * | 2019-01-08 | 2019-03-26 | 荆门思安机械设备有限公司 | A kind of alarm obstruction system for preventing Overheight Vehicles from hitting bridge tunnel |
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Application publication date: 20201225 |