CN110529156B - Tunnel excavation shield initial segment transportation system and method - Google Patents
Tunnel excavation shield initial segment transportation system and method Download PDFInfo
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- CN110529156B CN110529156B CN201910806133.0A CN201910806133A CN110529156B CN 110529156 B CN110529156 B CN 110529156B CN 201910806133 A CN201910806133 A CN 201910806133A CN 110529156 B CN110529156 B CN 110529156B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009412 basement excavation Methods 0.000 title claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- 230000007704 transition Effects 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 1
- 230000005641 tunneling Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 2
- SESFRYSPDFLNCH-UHFFFAOYSA-N benzyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC1=CC=CC=C1 SESFRYSPDFLNCH-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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Abstract
The invention discloses a tunnel tunneling shield initial section pipe piece transportation system and a tunnel tunneling shield initial section pipe piece transportation method, wherein the tunnel tunneling shield initial section pipe piece transportation system comprises two transportation trolleys and rails, the transportation trolleys support trusses and a transportation transmission device, and the 1# transportation trolley rail is perpendicular to the 2# transportation trolley rail. The transition track is transversely put to be fixed on 2# travelling bogie, and 1# travelling bogie supports on 2# travelling bogie, and the transportation transmission sets up on 1#, 2# travelling bogie supporting truss. The method comprises the steps of 1) connecting the end of a steel wire rope of a winch with one end of a transport trolley 1# and then pulling the transport trolley 1# to travel towards the transport trolley 2# and 2) connecting the end of the steel wire rope of the winch with one end of the transport trolley 2# and then carrying the transport trolley 1# and segments to travel towards the segment erector, and 3) carrying the transport trolley 1# to return to reset respectively. The invention improves the efficiency of segment transportation and solves the problem that the small-clearance underground space conveying trolley is difficult to steer to convey segments to a segment erector.
Description
Technical Field
The invention relates to a duct piece transportation system for supporting the inner wall of a tunnel, in particular to a duct piece transportation system which is used for the shield tunneling construction of a river-crossing tunnel and used when a shield is started in an open excavation and buried non-deepened section adjacent to a working well, and belongs to the technical field of tunnel construction.
Background
The river-crossing tunnel constructed by the slurry balance shield method with the large diameter (phi is not less than 11m and not more than 14 m) is limited by conditions such as project investment, construction environment, connection with existing lines and the like, and often does not have ideal shield construction conditions, so that special starting forms and segment transportation modes such as split starting of the shield, station-crossing starting of the shield and the like appear. The open-cut and buried section is one of the sections of the road shield tunnel which is transited from the ground section to the shield tunnel section, the open section is connected with the shield working well, and a supporting trolley behind the shield machine is generally placed in the open-cut and buried section when the shield is started. In a certain river bottom tunnel project with the characteristics that a deepening section is not arranged in an open-cut and buried section structure close to a working well, a duct piece is hung and unloaded to a duct piece feeding machine through 2-3 trolley trusses, and the duct piece is conveyed to a duct piece assembling machine through a conveying system to be assembled. The duct piece needs to be transversely moved perpendicular to the axis of the duct piece, then the duct piece is longitudinally moved along the axis of the duct piece to the duct piece assembling machine to assemble the inner wall of the tunnel, the conveying trolley needs to turn 90 degrees in a narrow underground space to realize the actions, and the problem that the conveying trolley is difficult to turn to convey the duct piece to the duct piece assembling machine in the small-clearance underground space exists.
Disclosure of Invention
The invention aims to provide a pipe piece transportation system for a tunnel excavation shield starting section, which can change the pipe piece transportation from transverse transportation to longitudinal transportation and realize the pipe piece supply during the shield excavation starting period.
The purpose of the invention is realized by the following technical scheme.
A tunnel excavation shield starting section pipe piece conveying system comprises a 1# conveying trolley, a 2# conveying trolley, a 1# conveying trolley track, a 2# conveying trolley track, a 1# conveying trolley supporting truss, a 2# conveying trolley supporting truss, a pair of pipe piece brackets and a conveying transmission device, wherein the 1# conveying trolley and the 2# conveying trolley have the same structure and respectively comprise a trolley body and two pairs of wheels supported below the trolley body through corresponding wheel boxes on the lower side of the trolley body; the 1# transportation trolley track is fixed on the top surface of the 1# transportation trolley supporting truss, and the 2# transportation trolley track is fixed on the top surface of the 2# transportation trolley supporting truss; the duct piece brackets are in a slope shape, the inclined planes of the pair of duct piece brackets are fixed on the longitudinal top surface of the No. 1 transport trolley in pairs in a mode of high outside and low inside, and the bottom of the duct piece is supported on the pair of duct piece brackets; the bottom of the supporting truss of the transport trolley 1# is supported on the bottom surface of the first tunnel, the bottom of the supporting truss of the transport trolley 2# is supported on the bottom surface of the second tunnel, and the track of the transport trolley 1# is vertical to the track of the transport trolley 2 #; two pairs of wheels on the lower side of the No. 1 transport trolley are supported on the top surface of the No. 1 transport trolley supporting truss through No. 1 transport trolley rails respectively, the transition rails are transversely fixed on the No. 2 transport trolley, and two pairs of wheels on the lower side of the No. 2 transport trolley are supported on the top surface of the No. 2 transport trolley supporting truss through the No. 2 transport trolley rails respectively; when the No. 1 transport trolley runs to the intersection of the No. 1 transport trolley track and the No. 2 transport trolley track, two pairs of wheels on the lower side of the No. 1 transport trolley are supported on the No. 2 transport trolley through transition tracks; the transport transmission device is arranged on the No. 1 transport trolley supporting truss and the No. 2 transport trolley supporting truss.
The object of the invention is further achieved by the following technical measures.
Furthermore, the transport transmission device comprises a winch and 5 fixed pulleys, the winch is arranged on the ground outside one end, away from the 2# transport trolley supporting truss, of the 1# transport trolley supporting truss, the 1# fixed pulley and the 2# fixed pulley are respectively vertically arranged in two ends of the upper side of the 1# transport trolley supporting truss, the 3# fixed pulley is vertically arranged on a fixed structure on the outer side of the vertical intersection of the 1# transport trolley supporting truss and the 2# transport trolley supporting truss, the 4# fixed pulley is arranged in the middle of one end, close to the 1# transport trolley supporting truss, of the 2# transport trolley supporting truss, and the 5# fixed pulley is obliquely arranged on the upper side of one end, close to the 1# transport trolley supporting truss, of the 2# transport trolley supporting truss; one end of a steel wire rope released by the winch bypasses a plurality of fixed pulleys and then is connected with the end head of the No. 1 transport trolley or the end head of the No. 2 transport trolley.
Furthermore, the bottom surface of the second tunnel is obliquely arranged, the bottom surface of the second tunnel descends from one end, close to the 1# transportation trolley support truss, of the 2# transportation trolley support truss to the other end of the 2# transportation trolley support truss, and the gradient of the descending slope is 3% -5%.
Furthermore, at the vertical intersection of the supporting truss of the transport trolley 1# and the supporting truss of the transport trolley 2# the track gauge of the transition track and the track of the transport trolley 1# is equal, and the top surface of the track is flush.
Furthermore, one end of the 1# transportation trolley track far away from the transition track and one end of the transition track far away from the 1# transportation trolley track are respectively provided with a vertical stop.
A method for transporting pipe segments of a tunnel tunneling shield starting section comprises the following steps:
1) the end of the steel wire rope of the winch is connected with one end of a 1# transport trolley
Releasing a steel wire rope on a winch drum, obliquely lifting the steel wire rope to a No. 1 fixed pulley, horizontally supporting the steel wire rope on the No. 1 fixed pulley and the No. 2 fixed pulley, and then turning 180 degrees around the No. 3 fixed pulley to be connected with one end of a No. 1 transport trolley carrying a pipe piece; and the end of the track of the transport trolley 1# is fixedly connected with the end of the transition track on the upper side of the transport trolley 2# by a connecting plate.
2) The steel wire rope of the winch pulls the No. 1 travelling bogie to travel towards the No. 2 travelling bogie
And (3) tightening the steel wire rope by using a winch drum, pulling the 1# transport trolley carrying the pipe piece to run towards the 2# transport trolley until the 1# transport trolley runs from the end of the 1# transport trolley track to the transition track on the upper side of the 2# transport trolley and then stops after contacting with a vertical car stop.
3) The end of the steel wire rope of the winch is connected with one end of a No. 2 travelling bogie
The connection between the end of the steel wire rope and one end of the 1# transport trolley is released, the steel wire rope of the winch drum is released, and the steel wire rope is connected with one end of the 2# transport trolley by bypassing the 4# fixed pulley and the 5# fixed pulley after horizontally supporting the steel wire rope on the 1# fixed pulley and the 2# fixed pulley.
4) The No. 2 transport trolley carries the No. 1 transport trolley and the segment runs towards the segment erector in the second tunnel
After the connecting plate is removed, the winch slowly releases the steel wire rope, the 2# transportation trolley carries the 1# transportation trolley and the segment to run on the 2# transportation trolley track inclined due to the slope descending of the bottom surface of the second tunnel, and the 2# transportation trolley carries the 1# transportation trolley and the segment to slowly run towards the segment erector under the combined action of the dragging force of the steel wire rope and the self-weight component force of the 2# transportation trolley, the 1# transportation trolley and the segment; and unloading the segment after the 2# transport trolley carries the 1# transport trolley and the segment slides downwards to the lower side of the segment erector to be in place, and finishing the transportation of the segment.
5)2# transport trolley carrying 1# transport trolley returns to reset respectively
The winch tightens up the wire rope again, the No. 2 travelling bogie carries the No. 1 travelling bogie to travel towards the No. 1 travelling bogie track direction, until the No. 2 travelling bogie reaches the intersection of the No. 1 travelling bogie supporting truss and the No. 2 travelling bogie supporting truss; after the end of the transition track on the upper side of the No. 2 transport trolley is connected with the end of the track of the No. 1 transport trolley by the connecting plate, the connection between the end of the steel wire rope and the No. 2 transport trolley is released; then connecting the end of the steel wire rope with the other end of the No. 1 transport trolley on the No. 2 transport trolley; the winch continuously tightens the steel wire rope, the 1# transport trolley is pulled to run from the transition track to the 1# transport trolley track, and at the moment, the 2# transport trolley stops at the initial position where the end of the transition track is in butt joint with the end of the 1# transport trolley track; and the winch continues to tighten the steel wire rope, and the 1# transport trolley travels to the initial segment receiving position along the 1# transport trolley track towards the direction away from the 2# transport trolley support truss to complete a working cycle.
The invention adopts a structure that a 1# transport trolley bearing the duct pieces is supported on a pair of transition tracks, and the pair of transition tracks are fixed on a 2# duct piece transport trolley, thereby realizing 90-degree steering transportation of the 2# transport trolley carrying the 1# transport trolley and the duct pieces from the 1# transport trolley track vertical to the axis of the transport trolley to the 2# transport trolley track parallel to the axis of the transport trolley, improving the duct piece transportation efficiency, and solving the problem that the small-clearance underground space transport trolley is difficult to steer to transport the duct pieces to a duct piece erector. According to the invention, a structure that 1 winch and 5 fixed pulleys are skillfully arranged is adopted, the connection conversion between the steel wire ropes and the 1# transport trolley and the 2# transport trolley is realized, and the 2# transport trolley is obliquely arranged on the supporting truss, so that the 1 winch can drive the 1# transport trolley and the 2# transport trolley back and forth in a way that the steel wire ropes are connected differently and bypass different fixed pulleys, and the transportation cost of the duct piece is reduced.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of the present invention, where a steel cable is connected to a # 1 transport cart;
FIG. 2 is a schematic diagram of a No. 1 transport vehicle driving to the right onto a No. 2 transport vehicle;
FIG. 3 is a top view of FIG. 1 with the # 1 transport cart traveling to the right;
FIG. 4 is a schematic view of a # 2 transport cart carrying a # 1 transport cart and a segment being driven into position below a segment erector;
FIG. 5 is a schematic view of the No. 2 transport vehicle carrying the No. 1 transport vehicle on the way back with empty vehicles;
FIG. 6 is a schematic illustration of a # 2 transport cart carrying a # 1 transport cart empty and returning to the intersection of the # 1 transport cart support truss and the # 2 transport cart support truss;
figure 7 is a schematic view of the empty 1# transport cart returning to the initial receiver tube sheet position.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments of the menglauca nape tunnel project, wherein the open-cut buried section of the menglauca nape tunnel project is not provided with a deepened section.
As shown in fig. 1 to 7, the present embodiment includes a # 1 transport cart 1, a # 2 transport cart 2, a # 1 transport cart track 3, a # 2 transport cart track 4, a # 1 transport cart support truss 5, a # 2 transport cart support truss 6, a pair of segment brackets 7 and a transport transmission device 8, where the # 1 transport cart 1 and the # 2 transport cart 2 of the welded steel structure have the same structure and respectively include a cart body 11 and two pairs of wheels 13 supported under the cart body 11 through corresponding wheel boxes 12 on the lower side of the cart body 11. The No. 1 transportation trolley track 3 and the No. 2 transportation trolley track 4 are respectively fixed on the top surface of the corresponding No. 1 transportation trolley supporting truss 5 and the top surface of the No. 2 transportation trolley supporting truss 6. The duct piece brackets 7 are in a slope shape, the inclined planes of the pair of duct piece brackets 7 are fixed on the longitudinal top surface of the No. 1 transport trolley 1 in pairs in a high-inside-low mode, and the bottoms of the duct pieces 10 are supported on the pair of duct piece brackets 7. The No. 1 carriage support truss 5 is supported at the bottom on the bottom of the first tunnel 20, the No. 2 carriage support truss 6 is supported at the bottom on the bottom of the second tunnel 30, and the No. 1 carriage track 3 is perpendicular to the No. 2 carriage track 4. Two pairs of wheels 13 on the lower side of the 1# transport trolley 1 are supported on the top surface of the 1# transport trolley supporting truss 5 through the 1# transport trolley rails 3 respectively, the transition rails 21 are transversely fixed on the 2# transport trolley 2, and two pairs of wheels 13 on the lower side of the 2# transport trolley 2 are supported on the top surface of the 2# transport trolley supporting truss 6 through the 2# transport trolley rails 4 respectively.
When the No. 1 transport trolley 1 runs to the intersection of the No. 1 transport trolley track 3 and the No. 2 transport trolley track 4, two pairs of wheels 13 on the lower side of the No. 1 transport trolley 1 are supported on the No. 2 transport trolley 2 through transition tracks 21.
The transport transmission device 8 is arranged on the No. 1 transport trolley supporting truss 5 and the No. 2 transport trolley supporting truss 6 and comprises a winch 81 and 5 fixed pulleys, the winch 81 is arranged outside one end of the No. 1 transport trolley supporting truss 5 far away from the No. 2 transport trolley supporting truss 6, namely on the ground at the left end of the figure 1, the No. 1 fixed pulleys 82 and the No. 2 fixed pulleys 83 are respectively and vertically arranged in the two ends of the upper side of the No. 1 transport trolley supporting truss 5, the No. 3 fixed pulley 84 is vertically arranged on the fixed structure 40 at the outer side of the vertical intersection of the No. 1 transportation trolley supporting truss 5 and the No. 2 transportation trolley supporting truss 6, the No. 4 fixed pulley 85 is arranged on the middle part of the No. 2 transportation trolley supporting truss 6 close to the left side of one end of the No. 1 transportation trolley supporting truss 5, and the No. 5 fixed pulley 86 is obliquely arranged on the upper side of the No. 2 transportation trolley supporting truss 6 close to one end of the No. 1 transportation trolley supporting truss 5. One end of a steel wire rope 812 released by the winch 81 is wound around a plurality of fixed pulleys and then is connected with the end head of the transport trolley 1# or the end head of the transport trolley 2# in sequence.
The bottom surface of the second tunnel 30 is sloped down from the end of the # 2 transportation trolley support truss 6 close to the # 1 transportation trolley support truss 5 to the other end of the # 2 transportation trolley support truss 6, and the slope of the bottom surface of the second tunnel 30 in the embodiment is 4%. The method has the advantages that when the No. 2 transport trolley 2 carries the No. 1 transport trolley 1 and the duct piece 10 to run on the inclined No. 2 transport trolley track 4, under the combined action of 811 dragging force of a steel wire rope and self-weight component force of the No. 2 transport trolley 2, the No. 1 transport trolley 1 and the duct piece 10, the No. 2 transport trolley 2 can carry the No. 1 transport trolley 1 and the duct piece 10 to slowly run towards the direction of the duct piece erector at one end of the second tunnel 30. Therefore, one winch 81 can drive the No. 2 transport trolley 2 to run in two directions, one winch is saved, and the manufacturing cost of the invention is reduced.
As shown in fig. 1 and 2, at the vertical intersection of the # 1 bogie support truss 5 and the # 2 bogie support truss 6, the track gauge of the transition track 21 and the # 1 bogie track 3 is equal, and the top surface of the track is flush. The 1# transport trolley 1 can conveniently run from the 1# transport trolley rail 3 to the transition rail 21 on the top surface of the 2# transport trolley 2, so that the 2# transport trolley 2 can run with the 1# transport trolley 1 to complete the 90-degree steering of the duct piece 10. One end (the left end in figures 1 and 2) of the 1# transportation trolley track 3 far away from the transition track 21 and one end (the right end in figures 1 and 2) of the transition track 21 far away from the 1# transportation trolley track 3 are respectively provided with a vertical stop 9 which is respectively used for preventing the 1# transportation trolley 1 and the 2# transportation trolley 2 from running to the end of the corresponding track to derail.
A method of using a tunnel boring shield starting section segment duct transportation system, comprising the steps of:
in fig. 1 to 7, the open arrows indicate the traveling direction of the transport vehicle # 1 or # 2, and the arrows indicate the running direction of the wire rope 812.
1) The end of a steel wire rope 812 of the winch 81 is connected with one end of a 1# transport trolley 1
As shown in fig. 1, the winch drum 811 rotates clockwise to release the wire rope 812 thereon, the wire rope 812 rises obliquely to the fixed pulley 82 # 1, is horizontally supported on the fixed pulley 82 # 1 and the fixed pulley 83 # 2, then turns 180 degrees around the fixed pulley 84 # 3, and is connected with the right end of the transport trolley # 1 carrying the duct piece 10, and the end of the right end of the transport trolley # 1 rail 3 is fixedly connected with the end of the left end of the transition rail 21 on the upper side of the transport trolley # 2 by the connecting plate 41.
2) The steel wire 812 of the winch 8 pulls the transport trolley 1# 1 to move towards the transport trolley 2# 2
As shown in fig. 1 to fig. 3, the winch drum 811 rotates counterclockwise to tighten the wire rope 812, and pulls the transport trolley # 1 carrying the segment 10 to travel rightward toward the transport trolley # 2 until the transport trolley # 1 travels from the end of the transport trolley # 1 rail 3 to the transition rail 21 on the upper side of the transport trolley # 2 and contacts the vertical car stop 9.
3) The end of a steel wire rope 812 of the winch 81 is connected with one end of a No. 2 transport trolley
As shown in fig. 2 and 4, the end of the wire rope 812 is disconnected from the right end of the transport cart 1# 1, the winch drum 811 rotates clockwise again to release the wire rope 812 thereon, and the wire rope 812 passes through the horizontal supports on the fixed pulleys 82 # 1 and 83 # 2 and then is connected to one end of the transport cart 2# 2 by passing around the fixed pulleys 85 # 4 and 86 # 5.
4) The No. 2 transport trolley 2 carries the No. 1 transport trolley 1 and the segment 10 to drive towards the direction of the segment erector in the second tunnel 30
As shown in fig. 4, after the connection plate 41 is removed, the winch drum 811 rotates clockwise to slowly release the steel wire rope 812, the # 2 transportation trolley 2 carries the # 1 transportation trolley 1 and the duct piece 10 to run on the # 2 transportation trolley track inclined due to the slope descending of the bottom surface of the second tunnel 30, and the # 2 transportation trolley 2 carries the # 1 transportation trolley 1 and the duct piece 10 to slowly run towards the duct piece erector under the combined action of the dragging force of the steel wire rope 812 and the self-weight component of the # 2 transportation trolley 2, the # 1 transportation trolley 1 and the duct piece 10. And unloading the segment 10 after the segment 2 carries the No. 1 transport trolley 2 and the segment 10 and slides down to the lower side of the segment erector to be in place, and finishing the transportation of the segment 10.
5) The 2# transport trolley 2 carries the 1# transport trolley 1 to return to reset respectively
As shown in fig. 5 to 7, the winch drum 811 rotates counterclockwise to tighten the wire rope 812, and the # 2 transport trolley 2 carries the # 1 transport trolley 1 to travel toward the # 1 transport trolley rail 3 until the # 2 transport trolley 2 reaches the intersection of the # 1 transport trolley support truss 5 and the # 2 transport trolley support truss 6. After the left end of the transition track 21 on the upper side of the transport trolley 2# 2 is connected with the right end of the transport trolley track 3# 1 by the connecting plate 41, the connection between the end of the steel wire rope 812 and the transport trolley 2# 2 is released. Then the end of the steel wire rope 812 is connected with the left end of the No. 1 transport trolley 1 on the No. 2 transport trolley 2. The winch 81 continues to tighten the steel wire rope 812, pulls the transport trolley 1# to move leftwards from the transition track 21 to the transport trolley track 3# 1, and at the moment, the transport trolley 2# 2 stops at the initial position where the end head at the left end of the transition track 21 is in butt joint with the end head at the right end of the transport trolley track 3# 1. The winch 81 continues to tighten the steel wire rope 812, and the transport trolley 1# runs to the initial segment receiving position along the transport trolley track 3# 1 towards the direction far away from the transport trolley support truss 6 # 2, so that a working cycle is completed.
The method is used for segment transportation construction of the left line shield initiation of the Bengal Carnapelli river tunnel engineering, and practically solves the segment transportation problem of the shield initiation stage under the condition that the deepening section is not arranged in the open-cut and buried section of the river-crossing shield tunnel engineering. The segment is hoisted to the No. 1 transport trolley from the portal crane on the working well, and through the steps, the segment is driven to the No. 2 transport trolley from the No. 1 transport trolley, so that the segment transportation direction is changed to the lower side of the segment erector to be in place, the whole process only needs 12 minutes, and the requirement on the segment assembling speed in the starting stage is met.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (3)
1. A tunnel excavation shield starting section pipe piece conveying system comprises a 1# conveying trolley, a 2# conveying trolley, a 1# conveying trolley track, a 2# conveying trolley track, a 1# conveying trolley supporting truss, a 2# conveying trolley supporting truss, a pair of pipe piece brackets and a conveying transmission device, wherein the 1# conveying trolley and the 2# conveying trolley have the same structure and respectively comprise a trolley body and two pairs of wheels supported below the trolley body through corresponding wheel boxes on the lower side of the trolley body; the 1# transportation trolley track is fixed on the top surface of the 1# transportation trolley supporting truss, and the 2# transportation trolley track is fixed on the top surface of the 2# transportation trolley supporting truss; the duct piece brackets are in a slope shape, the inclined planes of the pair of duct piece brackets are fixed on the longitudinal top surface of the No. 1 transport trolley in pairs in a mode of high outside and low inside, and the bottom of the duct piece is supported on the pair of duct piece brackets; the method is characterized in that the bottom of a supporting truss of the No. 1 transport trolley is supported on the bottom surface of a first tunnel, the bottom of a supporting truss of the No. 2 transport trolley is supported on the bottom surface of a second tunnel, and a track of the No. 1 transport trolley is perpendicular to a track of the No. 2 transport trolley; two pairs of wheels on the lower side of the No. 1 transport trolley are supported on the top surface of the No. 1 transport trolley supporting truss through No. 1 transport trolley rails respectively, the transition rails are transversely fixed on the No. 2 transport trolley, and two pairs of wheels on the lower side of the No. 2 transport trolley are supported on the top surface of the No. 2 transport trolley supporting truss through the No. 2 transport trolley rails respectively; when the No. 1 transport trolley runs to the intersection of the No. 1 transport trolley track and the No. 2 transport trolley track, two pairs of wheels on the lower side of the No. 1 transport trolley are supported on the No. 2 transport trolley through transition tracks; the transport transmission device is arranged on the No. 1 transport trolley supporting truss and the No. 2 transport trolley supporting truss; the transport transmission device is characterized by comprising a winch and 5 fixed pulleys, wherein the winch is arranged on the ground outside one end, away from the supporting truss of the No. 2 transport trolley, of the supporting truss of the No. 1 transport trolley, the No. 1 fixed pulley and the No. 2 fixed pulley are respectively vertically arranged in two ends of the upper side of the supporting truss of the No. 1 transport trolley, the No. 3 fixed pulley is vertically arranged on a fixed structure on the outer side of the vertical intersection of the supporting truss of the No. 1 transport trolley and the supporting truss of the No. 2 transport trolley, the No. 4 fixed pulley is arranged in the middle of one end, close to the supporting truss of the No. 1 transport trolley, of the supporting truss of the No. 2 transport trolley, and the No. 5 fixed pulley is obliquely arranged on the upper side of one end, close to the; one end of a steel wire rope released by the winch bypasses a plurality of fixed pulleys and then is connected with the end head of the No. 1 transport trolley or the end head of the No. 2 transport trolley.
2. The system of claim 1, wherein the second tunnel bottom is inclined, and the second tunnel bottom is sloped from the end of the # 2 transportation vehicle support truss near the # 1 transportation vehicle support truss to the other end of the # 2 transportation vehicle support truss, and the slope of the slope is 3% to 5%.
3. A method of using the tunnel boring shield starting section segment transport system of claim 1, comprising the steps of:
1) the end of the steel wire rope of the winch is connected with one end of a 1# transport trolley
Starting a winch to release a steel wire rope on a winch drum, wherein the steel wire rope obliquely rises to a No. 1 fixed pulley, is horizontally supported on the No. 1 fixed pulley and the No. 2 fixed pulley, and then is connected with one end of a No. 1 transport trolley carrying a duct piece after being turned 180 degrees around the No. 3 fixed pulley; fixedly connecting the end of the track of the transport trolley No. 1 with the end of the transition track on the upper side of the transport trolley No. 2 by using a connecting plate;
2) the steel wire rope of the winch pulls the No. 1 travelling bogie to travel towards the No. 2 travelling bogie
The winch drum tightens up the steel wire rope, pulls the 1# transport trolley carrying the pipe piece to run towards the 2# transport trolley until the 1# transport trolley runs from the end of the 1# transport trolley track to the transition track on the upper side of the 2# transport trolley and contacts with the vertical car stop;
3) the end of the steel wire rope of the winch is connected with one end of a No. 2 travelling bogie
The connection between the end of the steel wire rope and one end of the No. 1 transport trolley is released, the steel wire rope of the winch drum is released, and the steel wire rope is connected with one end of the No. 2 transport trolley by winding around the No. 4 fixed pulley and the No. 5 fixed pulley after being horizontally supported on the No. 1 fixed pulley and the No. 2 fixed pulley;
4) the No. 2 transport trolley carries the No. 1 transport trolley and the segment runs towards the segment erector in the second tunnel
After the connecting plate is removed, the winch slowly releases the steel wire rope, the 2# transportation trolley carries the 1# transportation trolley and the segment to run on the 2# transportation trolley track inclined due to the slope descending of the bottom surface of the second tunnel, and the 2# transportation trolley carries the 1# transportation trolley and the segment to slowly run towards the segment erector under the combined action of the dragging force of the steel wire rope and the self-weight component force of the 2# transportation trolley, the 1# transportation trolley and the segment; unloading the segment after the No. 2 transport trolley carries the No. 1 transport trolley and the segment slides downwards to the lower side of the segment erector to be in place, and completing segment transportation;
5)2# transport trolley carrying 1# transport trolley returns to reset respectively
The winch tightens up the wire rope again, the No. 2 travelling bogie carries the No. 1 travelling bogie to travel towards the No. 1 travelling bogie track direction, until the No. 2 travelling bogie reaches the intersection of the No. 1 travelling bogie supporting truss and the No. 2 travelling bogie supporting truss; after the end of the transition track on the upper side of the No. 2 transport trolley is connected with the end of the track of the No. 1 transport trolley by the connecting plate, the connection between the end of the steel wire rope and the No. 2 transport trolley is released; then connecting the end of the steel wire rope with the other end of the No. 1 transport trolley on the No. 2 transport trolley; the winch continuously tightens the steel wire rope, the 1# transport trolley is pulled to run from the transition track to the 1# transport trolley track, and at the moment, the 2# transport trolley stops at the initial position where the end of the transition track is in butt joint with the end of the 1# transport trolley track; and the winch continues to tighten the steel wire rope, and the 1# transport trolley travels to the initial segment receiving position along the 1# transport trolley track towards the direction away from the 2# transport trolley support truss to complete a working cycle.
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| CN103848195A (en) * | 2012-11-28 | 2014-06-11 | 江苏天工钛业科技有限公司 | Transportation vehicle allowing automatic right-angle turning |
| CN204528447U (en) * | 2014-12-30 | 2015-08-05 | 信宜市恒大机械科技有限公司 | A kind of track conveying device |
| CN204703931U (en) * | 2015-05-14 | 2015-10-14 | 湖南五新重型装备有限公司 | A kind of heavy grade cross traveling trolley |
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| CN208585702U (en) * | 2018-08-13 | 2019-03-08 | 中铁工程装备集团盾构制造有限公司 | Split type section of jurisdiction trolley and section of jurisdiction transportation system |
| CN209125210U (en) * | 2018-09-11 | 2019-07-19 | 湖北宇力汽车悬架弹簧股份有限公司 | Fixture storage and leaf springs of car automatic switchover system |
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