CN110002343B - Self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine and construction method - Google Patents
Self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine and construction method Download PDFInfo
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- CN110002343B CN110002343B CN201910343624.6A CN201910343624A CN110002343B CN 110002343 B CN110002343 B CN 110002343B CN 201910343624 A CN201910343624 A CN 201910343624A CN 110002343 B CN110002343 B CN 110002343B
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 208000037805 labour Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/04—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports with lifting beams, e.g. slewable beams, carrying load-engaging elements, e.g. magnets, hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine and a construction method, wherein the hoisting machine comprises a truss and a driving mechanism arranged on the truss, the front end of the truss is provided with a leading device, and the leading device is connected with the truss through a detachable pin shaft; hydraulic cylinders are vertically arranged at the bottoms of the upright posts at the four corners of the truss, and supporting deviation rectifying cross beams which can be retracted or lowered are arranged at the bottoms of the truss; the hoisting machine and the construction method can reduce construction cost, improve working efficiency, reduce potential safety hazards in construction and ensure construction quality.
Description
Technical Field
The invention relates to urban underground prefabricated comprehensive pipe gallery paving equipment, in particular to a self-driven urban underground prefabricated comprehensive pipe gallery paving hoisting machine and a construction method.
Background
At present, many cities in China are promoted to build underground comprehensive pipe racks, and better and safer services are provided for urban construction. Because the technology in China starts late, various problems still exist in the construction of the underground pipe gallery, wherein the pipe gallery is horizontally moved most commonly, and because the pipe gallery body is large in construction, the pipe gallery can be lifted into the gallery through a crane in an open excavation state, but the pipe gallery needs to be horizontally moved to be in butt joint with the front pipe gallery so as to achieve the purpose of contact with the front pipe gallery.
The prior art all adopts the mode of manual adjustment, guarantees the piping lane position through crane and artificial construction, and this kind of mode installation technology is loaded down with trivial details, and construction site span is big, if remove the piping lane in place, both consuming time and consuming power, the working cost is high, can't accurately guarantee the piping lane position again, still has the potential safety hazard when lifting by crane and adjustment position simultaneously, and the piping lane collides each other easily and influences construction quality.
Disclosure of Invention
In order to solve the technical problems, the invention provides a self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine and a construction method, so that the purposes of realizing independent walking by a self-driven mechanism, reducing construction cost, improving working efficiency, reducing potential safety hazards in construction and guaranteeing construction quality are achieved.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
The self-driven urban underground prefabricated comprehensive pipe gallery laying and hoisting machine comprises a truss and a driving mechanism arranged on the truss, wherein a leading device is arranged at the front end of the truss, and the leading device is connected with the truss through a detachable pin shaft; the bottoms of the upright posts at the four corners of the truss are vertically provided with hydraulic cylinders, and the bottoms of the truss are provided with supporting deviation rectifying beams which can be retracted or lowered; the truss top is equipped with the loop wheel machine coaster, loop wheel machine coaster middle part sets up the hoist engine, the hoist engine passes through wire rope and is connected with the assembly pulley of installing in loop wheel machine coaster both ends and the assembly pulley of installing in the truss both ends, the horizontal level in loop wheel machine coaster top sets up the hanging beam, install the tight adjusting screw that rises on the hanging beam, the hoist cable that is used for lifting by crane prefabricated utility tunnel is connected to tight adjusting screw bottom that rises.
In the above scheme, the driving mechanism comprises a cycloidal pin gear reducer arranged at the tail end of the truss, driving wheels and driven wheels, wherein the driving wheels are arranged at the two sides of the truss and driven by the cycloidal pin gear reducer, the driving wheels at the two sides of the truss are connected through a first driving shaft, the driven wheels at the two sides of the truss are connected through a second driving shaft, the first driving shaft and the second driving shaft are connected through a chain wheel, the cycloidal pin gear reducer is connected with the first driving shaft through a chain wheel, and the driving wheels and the driven wheels are double wheels arranged side by side.
In the above scheme, the front guide device comprises a front guide frame and a front guide row wheel arranged at the bottom of the front guide frame, wherein a stay bar is connected between the front end of the front guide frame and the top of the truss, the stay bar is connected with the truss through a detachable pin shaft, and the tail end of the front guide frame is hinged with the bottom of the truss.
In the scheme, the hanging beams are arranged in two groups and are respectively positioned at the front end and the rear end of the crane pulley, each group of hanging beams comprises two hanging beams, the two ends of each hanging beam are provided with strip-shaped grooves, the tensioning adjusting screw is arranged in each strip-shaped groove, and an adjusting handle is arranged above the tensioning adjusting screw.
In the above scheme, support and rectify the crossbeam and set up two around, support and rectify the crossbeam top fluting and set up the round steel along the crossbeam is vertical, around having lifting rope and truss bottom fixed beam to be connected on the round steel, support and rectify crossbeam bottom both sides and set up the pull ring respectively, the pull ring passes through the stay cord and is connected with pulley and the stay cord spool of installing on the truss, pulley and stay cord spool are located the both sides that support and rectify the crossbeam respectively, set up the hand crank on the stay cord spool, the truss bottom still sets up the drag hook that is used for fixed stay to rectify the crossbeam.
A construction method of a self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine comprises the following steps:
(1) The prefabricated comprehensive pipe racks are sequentially hoisted into the dug tunnel by utilizing the existing crane, 2-3 prefabricated comprehensive pipe racks at the front end are spliced, and then steel stranded wires between the prefabricated comprehensive pipe racks are hydraulically pulled up, so that seamless butt joint between the prefabricated comprehensive pipe racks is realized;
(2) The front guide device is put down, the truss is opened to the installed prefabricated comprehensive pipe rack by utilizing the driving mechanism, so that the front end of the truss falls on the top of the prefabricated comprehensive pipe rack to be assembled, and at least one prefabricated comprehensive pipe rack to be assembled is reserved at the bottom of the truss;
(3) The position of a crane pulley is adjusted through a winch, a sling is hooked on a lifting hook at the top of a prefabricated comprehensive pipe gallery at the bottom of a truss, a hydraulic cylinder is started, and the whole truss is jacked up, so that the prefabricated comprehensive pipe gallery is lifted off the ground;
(4) At the moment, the supporting deviation rectifying cross beam is lowered, the weight of the truss falls on the supporting deviation rectifying cross beam, the position of the crane pulley is adjusted, the crane pulley is spliced with the installed prefabricated comprehensive pipe gallery, the prefabricated comprehensive pipe gallery is lowered, then the sling is separated from the lifting hook, and the steel strand between the prefabricated comprehensive pipe galleries is hydraulically pulled, so that seamless butt joint is realized;
(5) After the prefabricated comprehensive pipe gallery below the truss is hoisted, the supporting deviation rectifying cross beam is retracted, the hydraulic cylinder falls back, the truss and the front guiding device are driven by the driving mechanism to move forwards, after the prefabricated comprehensive pipe gallery below the truss is hoisted to the position, the prefabricated comprehensive pipe gallery and the prefabricated comprehensive pipe gallery are in seamless butt joint, after all the prefabricated comprehensive pipe galleries are installed, the front guiding device is lifted, and the truss is withdrawn.
In the scheme, when the angle between the truss and the prefabricated comprehensive pipe gallery is different, the position of the sling is adjusted by adjusting the position of the tensioning adjusting screw on the hanging beam.
In the scheme, after the sling hooks the prefabricated comprehensive pipe rack, the sling is tensioned by adjusting the tensioning adjusting screw, so that the sling is prevented from being separated from the prefabricated comprehensive pipe rack.
In the scheme, when the truss and the prefabricated comprehensive pipe gallery form a larger offset position, the position of the sling is adjusted by adjusting the position of the truss on the supporting deviation correcting cross beam.
Through the technical scheme, the self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine and the construction method have the following beneficial effects:
1. the hoisting machine is provided with the driving mechanism on the truss, realizes independent walking through the cycloidal pin gear speed reducer, the driving wheel and the driven wheel, does not need to depend on external driving force, has the advantages of optimized equipment volume, small occupied space, large driving force and convenient walking;
2. The front guide wheels are utilized to move forwards, so that the support legs of the truss can be prevented from falling into the gaps between the pipe galleries, even if one or two front guide wheels fall into the gaps, the construction process is not affected, meanwhile, the front guide device is connected with the truss through the detachable pin shaft, the front guide device can be folded upwards after the front guide device is used, the equipment volume is further reduced, and the walking is flexible;
3. The hydraulic cylinders are vertically arranged at the bottoms of the upright posts at the four corners of the truss, and the whole truss is jacked up by the hydraulic cylinders in the process of lifting the prefabricated comprehensive pipe gallery, so that the purpose of lifting the prefabricated comprehensive pipe gallery off the ground is realized, and the design of a crane pulley top lifting device can be saved, so that the weight is more intensified, and the construction efficiency is improved;
4. The bottom of the truss is provided with a supporting deviation rectifying beam which can be retracted or lowered, and the supporting deviation rectifying beam can enable the weight of the truss to fall on the supporting deviation rectifying beam in the process of moving the prefabricated comprehensive pipe rack, so that the pressure on the bottom hydraulic cylinder is reduced; meanwhile, the top of the supporting deviation correcting cross beam is in point contact with the truss through round steel, when the truss and the prefabricated comprehensive pipe gallery form a larger deviation position, the position of the truss on the supporting deviation correcting cross beam can be adjusted through external bridge steel, and therefore the position of a sling is adjusted;
5. The middle part of the crane pulley is provided with a winch, the winch is connected with pulley blocks arranged at two ends of the crane pulley and pulley blocks arranged at two ends of the truss through a steel wire rope, so that the crane pulley can move forwards and backwards at the top of the truss, the working speed of the winch can be reduced by adopting the pulley block mode, a larger driving force is obtained, and the crane pulley can move flexibly;
5. The top of the crane pulley is transversely and horizontally provided with a hanging beam, the hanging beam is provided with a tensioning adjusting screw, the bottom of the tensioning adjusting screw is connected with a sling for hoisting the prefabricated comprehensive pipe gallery, the two ends of the hanging beam are provided with strip-shaped grooves, the tensioning adjusting screw is arranged in the strip-shaped grooves, and when the placing angle of the truss and the prefabricated comprehensive pipe gallery is different, the position of the sling is adjusted by adjusting the position of the tensioning adjusting screw on the hanging beam; after the sling hooks the prefabricated comprehensive pipe rack, the sling is tensioned by adjusting the tensioning adjusting screw, so that the sling is prevented from being separated from the prefabricated comprehensive pipe rack, and the sling can be adjusted greatly and fine-tuned slightly, so that the sling can reach a correct position quickly, and the operation is simple, convenient and quick, and has a good application prospect;
6. the driving wheel and the driven wheel are double wheels arranged side by side, the contact area between the driving wheel and the pipe gallery can be increased by double-wheel driving, the friction force is increased, and the reliability of the equipment is improved;
7. The supporting deviation correcting cross beam is lowered and lifted through the hand crank, so that the operation safety is improved, and the labor risk is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic diagram of a construction process of a self-driven urban underground prefabricated utility tunnel laying hoisting machine according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a self-driven urban underground prefabricated utility tunnel laying hoist with a folded-up leader according to an embodiment of the present invention;
FIG. 3 is a top view of a self-propelled urban underground prefabricated utility tunnel laying hoist according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a driving mechanism according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a supporting deviation rectifying beam portion according to an embodiment of the present invention.
In the figure, 1, a truss; 2. cycloidal pin gear speed reducer; 3. a driving wheel; 4. driven wheel; 5. a first driving shaft; 6. a second driving shaft; 7. a sprocket; 8. a pin shaft; 9. a front guide frame; 10. a leading row wheel; 11. a brace rod; 12. a hydraulic cylinder; 13. a hydraulic station; 14. a distribution box; 15. supporting a deviation correcting beam; 16. round steel; 17. a hanging rope; 18. a fixed beam; 19. a pull ring; 20. a pull rope; 21. a pulley; 22. a pull rope reel; 23. a handle; 24. a drag hook; 25. a crane pulley; 26. a hoist; 27. a wire rope; 28. pulley block; 29. a hanging beam; 30. tensioning an adjusting screw; 31. a sling; 32. a strip-shaped groove; 33. an adjustment handle; 34. an auxiliary wheel; 35. and (5) a generator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides a self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine and a construction method.
The self-driven urban underground prefabricated comprehensive pipe gallery paving hoisting machine comprises a truss 1 and a driving mechanism arranged on the truss 1, wherein the driving mechanism comprises a cycloidal pin gear reducer 2 arranged at the tail end of the truss 1 and driving wheels 3 and driven wheels 4 which are arranged on two sides of the truss 1 and driven by the cycloidal pin gear reducer 2, the front ends and the middle parts of the trusses can be provided with auxiliary wheels 34, as shown in fig. 4, the driving wheels 3 on two sides of the truss 1 are connected through a driving shaft I5, the driven wheels 4 on two sides of the truss 1 are connected through a driving shaft II 6, the driving shaft I5 is connected with the driving shaft II 6 through a chain wheel 7, the cycloidal pin gear reducer 2 is connected with the driving shaft I through the chain wheel 7, the driving wheels 3 and the driven wheels 4 are double wheels which are arranged side by side, the double-wheel driving can increase the contact area between the driving wheels 3 and the pipe gallery, increase the friction force and improve the reliability of equipment.
The front end of the truss 1 is provided with a leading device, and the leading device is connected with the truss 1 through a detachable pin shaft 8; the front guide device comprises a front guide frame 9 and a front guide row wheel 10 arranged at the bottom of the front guide frame 9, wherein a supporting rod 11 is connected between the front end of the front guide frame 9 and the top of the truss 1, the supporting rod 11 is connected with the truss 1 through a detachable pin shaft 8, and the tail end of the front guide frame 9 is hinged with the bottom of the truss 1. When the construction is completed, the pin 8 can be removed, and the front frame 9 is folded upward to fix the stay 11 to the top of the truss 1 for locking, as shown in fig. 2.
The hydraulic cylinders 12 are vertically arranged at the bottoms of the upright posts at the four corners of the truss 1, the hydraulic cylinders 12 are connected with the hydraulic stations 13 arranged on the truss 1 and the distribution box 14, the distribution box 14 is connected with the generator 35 at the front end of the truss 1, and oil supply and power supply of the hydraulic cylinders 12 are realized. The power supply in the equipment is realized through the self-contained generator 35, and the generator 35 is connected with the winch 26 through the distribution box 14. The bottom of the truss 1 is provided with a limit sensor, and when the truss 1 is jacked up to a certain height, the limit sensor can send a signal to the hydraulic station 13 to stop oil supply. The hydraulic station 13 also provides hydraulic pressure for the steel strand wires between the prefabricated utility tunnel after the concatenation rises and draws, can realize through the diverter valve on oil supply pipeline. A signal indication is provided on the distribution box 14.
The bottom of the truss 1 is provided with a retractable or downward supporting deviation rectifying beam 15, two supporting deviation rectifying beams 15 are arranged in front and back, as shown in fig. 5, the top of the supporting deviation rectifying beam 15 is slotted, round steel 16 is longitudinally arranged along the beam, a lifting rope 17 is wound on the round steel 16 and connected with a fixed beam 18 at the bottom of the truss 1, and the lifting rope 17 penetrates through the slotted slot and is connected with the fixed beam 18. Pull rings 19 are respectively arranged on two sides of the bottom of the supporting deviation rectifying beam 15, the pull rings 19 are connected with pulleys 21 and pull rope scroll 22 which are arranged on the truss 1 through pull ropes 20, the pulleys 21 and the pull rope scroll 22 are respectively arranged on two sides of the supporting deviation rectifying beam 15, a hand crank 23 is arranged on the pull rope scroll 22, and the pull ropes 20 can be wound on the pull rope scroll 22 to pull up or pull down the supporting deviation rectifying beam 15 through rotating the hand crank 23. The bottom of the truss 1 is also provided with a draw hook 24 for fixing the supporting deviation rectifying beam 15, and after the supporting deviation rectifying beam 15 is pulled up, the supporting deviation rectifying beam 15 is fixed through the draw hook 24 to prevent falling. When the truss 1 falls on the supporting deviation rectifying beam 15, the truss 1 and the prefabricated comprehensive pipe rack form a larger deviation position, and the truss 1 and the supporting deviation rectifying beam 15 are contacted through round steel 16, so that the position of the truss 1 on the supporting deviation rectifying beam 15 can be conveniently adjusted to adjust the position of a sling. Two groups of stay ropes 20 and pulleys 21 are arranged on the supporting deviation rectifying beam 15, and one stay rope reel 22 can drive the two groups of stay ropes 20 to pull up the supporting deviation rectifying beam 15.
The top of the truss 1 is provided with a crane pulley 25, a winch 26 is arranged in the middle of the crane pulley 25, as shown in fig. 3, the winch 26 is connected with pulley blocks 28 arranged at two ends of the crane pulley 25 and pulley blocks 28 arranged at two ends of the truss 1 through a steel wire rope 27, and two ends of the steel wire rope 27 are fixed on the pulley blocks 28 at two ends of the crane pulley 25. The crane pulley 25 is transversely and horizontally provided with a hanging beam 29 at the top, tension adjusting screws 30 are arranged at positions of two ends of the hanging beam 29 extending out of the truss 1, and slings 31 for hoisting the prefabricated comprehensive pipe rack are connected to the bottoms of the tension adjusting screws 30.
In this embodiment, two sets of hanging beams 29 are respectively located at the front end and the rear end of the crane pulley 25, each set of hanging beams 29 comprises two hanging beams, two ends of each hanging beam 29 are provided with a strip-shaped groove 32, a tensioning adjusting screw 30 is arranged in each strip-shaped groove 32 and can move in each strip-shaped groove 32, and when a gap exists between the truss 1 and the placement angle of the prefabricated utility tunnel, the position of the sling 31 is adjusted by adjusting the position of the tensioning adjusting screw 30 in each strip-shaped groove 32. An adjusting handle 33 is arranged above the tensioning adjusting screw 30, and after the sling 31 is hooked on the prefabricated utility tunnel, the sling 31 is tensioned by rotating the adjusting handle 33, so that the sling 31 is prevented from being separated from the prefabricated utility tunnel.
A construction method of a self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine comprises the following steps:
(1) The prefabricated comprehensive pipe racks are sequentially hoisted into the dug tunnel by utilizing the existing crane, 2-3 prefabricated comprehensive pipe racks at the front end are spliced, and then steel stranded wires between the prefabricated comprehensive pipe racks are hydraulically pulled up, so that seamless butt joint between the prefabricated comprehensive pipe racks is realized;
(2) The front guide device is put down, the truss 1 is opened to the installed prefabricated comprehensive pipe rack by using the driving mechanism, so that the front end of the truss 1 falls on the top of the prefabricated comprehensive pipe rack to be assembled, and at least one prefabricated comprehensive pipe rack to be assembled is reserved at the bottom of the truss 1;
(3) The position of a crane pulley 25 is adjusted through a winch 26 and a pulley block 28, a sling 31 is hooked on a lifting hook at the top of a prefabricated comprehensive pipe rack at the bottom of the truss 1, and a hydraulic cylinder 12 is started to jack up the whole truss 1, so that the prefabricated comprehensive pipe rack is lifted off the ground;
(4) At this time, the hand crank 23 is rotated, the supporting deviation rectifying beam 15 is lowered, the weight of the truss 1 falls on the supporting deviation rectifying beam 15, the position of the crane pulley 25 is adjusted, the crane pulley is spliced with the prefabricated utility tunnel, the prefabricated utility tunnel is lowered, the crane pulley is in butt joint with the prefabricated utility tunnel, then the sling 31 is separated from the lifting hook, and steel strands between the prefabricated utility tunnels are hydraulically pulled, so that seamless butt joint is realized;
(5) After the prefabricated comprehensive pipe gallery below the truss 1 is hoisted, the supporting deviation rectifying cross beam 15 is retracted, the hydraulic cylinder 12 falls back by means of the drag hook 24, the truss 1 descends, the driving mechanism drives the truss 1 and the front guiding device to move forwards, after the prefabricated comprehensive pipe gallery below the truss 1 is hoisted to the position, the prefabricated comprehensive pipe gallery is in seamless butt joint with the prefabricated comprehensive pipe gallery after the prefabricated comprehensive pipe gallery is installed, and after all the prefabricated comprehensive pipe galleries are installed, the front guiding device is lifted, and the truss 1 is withdrawn.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The self-driven urban underground prefabricated comprehensive pipe gallery laying and hoisting machine is characterized by comprising a truss and a driving mechanism arranged on the truss, wherein the front end of the truss is provided with a leading device, and the leading device is connected with the truss through a detachable pin shaft; the bottoms of the upright posts at the four corners of the truss are vertically provided with hydraulic cylinders, and the bottoms of the truss are provided with supporting deviation rectifying beams which can be retracted or lowered; the top of the truss is provided with a crane pulley, the middle of the crane pulley is provided with a winch, the winch is connected with pulley blocks arranged at two ends of the crane pulley and pulley blocks arranged at two ends of the truss through a steel wire rope, the top of the crane pulley is transversely and horizontally provided with a hanging beam, the hanging beam is provided with a tensioning adjusting screw, and the bottom of the tensioning adjusting screw is connected with a sling for hoisting a prefabricated comprehensive pipe gallery; the two supporting deviation correcting cross beams are arranged front and back, the tops of the supporting deviation correcting cross beams are grooved and are longitudinally provided with round steel along the cross beams, lifting ropes are wound on the round steel and are connected with a truss bottom fixing beam, pull rings are respectively arranged on two sides of the bottom of the supporting deviation correcting cross beams and are connected with pulleys and pull rope scroll shafts arranged on the truss through pull ropes, the pulleys and the pull rope scroll shafts are respectively positioned on two sides of the supporting deviation correcting cross beams, a hand crank is arranged on the pull rope scroll shafts, and a draw hook for fixedly supporting the deviation correcting cross beams is further arranged at the bottom of the truss; the front guide device comprises a front guide frame and a front guide row wheel arranged at the bottom of the front guide frame, wherein a stay bar is connected between the front end of the front guide frame and the top of the truss, the stay bar is connected with the truss through a detachable pin shaft, and the tail end of the front guide frame is hinged with the bottom of the truss; the lifting beams are arranged in two groups and are respectively positioned at the front end and the rear end of the crane pulley, each group of lifting beams comprises two lifting beams, the two ends of each lifting beam are provided with strip-shaped grooves, the tensioning adjusting screw is arranged in each strip-shaped groove, and an adjusting handle is arranged above the tensioning adjusting screw.
2. The self-driven urban underground prefabricated comprehensive pipe gallery paving hoisting machine according to claim 1, wherein the driving mechanism comprises a cycloidal pin gear reducer arranged at the tail end of the truss, driving wheels and driven wheels, wherein the driving wheels and the driven wheels are arranged at two sides of the truss and driven by the cycloidal pin gear reducer, the driving wheels at two sides of the truss are connected through a first driving shaft, the driven wheels at two sides of the truss are connected through a second driving shaft, the first driving shaft and the second driving shaft are connected through a chain wheel, the cycloidal pin gear reducer is connected with the first driving shaft through a chain wheel, and the driving wheels and the driven wheels are double wheels arranged side by side.
3. The construction method of the self-driven urban underground prefabricated comprehensive pipe gallery laying crane according to claim 1, which is characterized by comprising the following steps:
(1) The prefabricated comprehensive pipe racks are sequentially hoisted into the dug tunnel by utilizing the existing crane, 2-3 prefabricated comprehensive pipe racks at the front end are spliced, and then steel stranded wires between the prefabricated comprehensive pipe racks are hydraulically pulled up, so that seamless butt joint between the prefabricated comprehensive pipe racks is realized;
(2) The front guide device is put down, the truss is opened to the installed prefabricated comprehensive pipe rack by utilizing the driving mechanism, so that the front end of the truss falls on the top of the prefabricated comprehensive pipe rack to be assembled, and at least one prefabricated comprehensive pipe rack to be assembled is reserved at the bottom of the truss;
(3) The position of a crane pulley is adjusted through a winch, a sling is hooked on a lifting hook at the top of a prefabricated comprehensive pipe gallery at the bottom of a truss, a hydraulic cylinder is started, and the whole truss is jacked up, so that the prefabricated comprehensive pipe gallery is lifted off the ground;
(4) At the moment, the supporting deviation rectifying cross beam is lowered, the weight of the truss falls on the supporting deviation rectifying cross beam, the position of the crane pulley is adjusted, the crane pulley is spliced with the installed prefabricated comprehensive pipe gallery, the prefabricated comprehensive pipe gallery is lowered, then the sling is separated from the lifting hook, and the steel strand between the prefabricated comprehensive pipe galleries is hydraulically pulled, so that seamless butt joint is realized;
(5) After the prefabricated comprehensive pipe gallery below the truss is hoisted, the supporting deviation correcting cross beam is retracted, the hydraulic cylinder falls back, the truss and the front guiding device are driven by the driving mechanism to move forwards, after the prefabricated comprehensive pipe gallery below the truss reaches the position, the prefabricated comprehensive pipe gallery below the truss is hoisted according to the same method, the prefabricated comprehensive pipe gallery is in seamless butt joint with the prefabricated comprehensive pipe gallery after the prefabricated comprehensive pipe gallery is installed, and after all the prefabricated comprehensive pipe galleries are installed, the front guiding device is lifted, and the truss is withdrawn; when the placement angles of the truss and the prefabricated comprehensive pipe gallery are different, the position of the sling is adjusted by adjusting the position of the tensioning adjusting screw on the hanging beam; after the sling hooks the prefabricated comprehensive pipe rack, the sling is tensioned by adjusting the tensioning adjusting screw, so that the sling is prevented from being separated from the prefabricated comprehensive pipe rack.
4. A construction method of a self-propelled city underground prefabricated utility tunnel laying crane according to claim 3, wherein when the truss forms a larger offset position with the prefabricated utility tunnel, the position of the sling is adjusted by adjusting the position of the truss on the supporting and rectifying beam.
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| CN110863434B (en) * | 2019-12-04 | 2021-03-19 | 中铁七局集团第三工程有限公司 | Device for adjusting transverse pre-camber of steel box girder and construction method |
| CN110939156A (en) * | 2019-12-30 | 2020-03-31 | 广州地铁设计研究院股份有限公司 | Prefabricated plate positioning mechanism |
| CN114960926B (en) * | 2022-05-16 | 2023-05-02 | 中国化学工程第四建设有限公司 | Chemical pipe gallery structure and pipe replacement method |
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