CN102913259B - Steel arch assembling machine of tunnel vault for repairing damages of existing railway tunnel - Google Patents
Steel arch assembling machine of tunnel vault for repairing damages of existing railway tunnel Download PDFInfo
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- CN102913259B CN102913259B CN201210443890.4A CN201210443890A CN102913259B CN 102913259 B CN102913259 B CN 102913259B CN 201210443890 A CN201210443890 A CN 201210443890A CN 102913259 B CN102913259 B CN 102913259B
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Abstract
The invention discloses a steel arch assembling machine of a tunnel vault for repairing damages of an existing railway tunnel. The steel arch assembling machine comprises an assembling rack, a steel arch operating mechanism which is arranged on the assembling rack, an electrical control part and a hydraulic control part, wherein the steel arch operating mechanism comprises a steel arch position correcting device and a steel arch lifting and turning device which is arranged on the side of the steel arch position correcting device; the steel arch lifting and turning device comprises a lifting mechanism, a swing mechanism, a turning mechanism and a fixing mechanism; and the steel arch position correcting device comprises a longitudinal moving mechanism, a transverse moving mechanism which is arranged above the longitudinal moving mechanism, an up and down moving mechanism which is fixed on the transverse moving mechanism, a locking mechanism and an up and down moving guide mechanism. According to the invention, the steel arch exceeds the mechanical assembling for a carrier cable, so that the labour intensity is greatly reduced, and the working efficiency and safety are improved.
Description
Technical field
The present invention relates to a kind of Curing of Tunnel Diseases construction equipment, relate in particular to a kind of existing railway Curing of Tunnel Diseases tunnel vault steel arch frame fitting machine.
Background technology
When domestic existing railway tunnel defect is renovated, in the time that lining cracking is serious, conventionally adopt installation steel arch frame to carry out lining reinforcement.Generally, first to after tunnel lining fluting, steel arch frame being installed, then filling slot body, finally completes lining reinforcement at steel arch frame behind mud jacking.
Existing a kind of steel arch frame fitting machine, referring to " a kind of novel tunnel construction bow member fitting machine " of " tunnel construction " the 31st volume the 5th phase disclosure, utilize excavator to do chassis, transform its forearm as Special arm, at a set of clamping device that can realize six degree of freedom of its tip designs, realize and will after bow member gripping, arrive the function of optional position.Chief component comprises: a set of four-bar linkage structure, slew gear, clamping device, less important work platform, hydraulic control system and electrical control system.This bow member fitting machine is during for Weak Surrounding Rock Construction, while setting up steel arch frame as preliminary bracing use and design, do not consider this factor of carrier cable of existing railway tunnel overhead contact, design feature and the function of the steel arch frame traveling mechanism that its slew gear, clamping device form all cannot make steel arch frame walk around the carrier cable of existing railway tunnel overhead contact, the installation of tunnel vault steel arch frame cannot be used for existing railway Curing of Tunnel Diseases time.When existing railway tunnel reinforces by steel arch frame is installed at present, generally all adopt the artificial steel arch frame of installing.Because steel arch frame own wt is large, in the time that being installed, tunnel vault steel arch frame must walk around the carrier cable of railway tunnel contact net, and do not allow to bump with tunnel arch wall and carrier cable, so steel arch frame is manually installed, and not only difficulty is large, labour intensity is high, operating efficiency is low, and construction safety hidden danger is large.Have not yet to see the report of the mechanization erection equipment of steel arch frame in the time of existing railway Curing of Tunnel Diseases.
Summary of the invention
The object of the invention is to design the tunnel vault steel arch frame fitting machine that a kind of existing railway Curing of Tunnel Diseases is used, the mechanization of Vault Steel bow member is installed when realizing Curing of Tunnel Diseases, improves the safety of operating efficiency and operation in reducing labor intensity.
The formation that realizes the tunnel vault steel arch frame fitting machine that the existing railway Curing of Tunnel Diseases of the object of the invention uses comprises installation stand, be arranged on steel arch frame traveling mechanism and electrical control part and the hydraulic control part of installing on stand, it is characterized in that described steel arch frame traveling mechanism is made up of steel arch frame position correction apparatus and the lifting of steel arch frame and the turning device that are arranged on steel arch frame position correction apparatus side, the lifting of steel arch frame and turning device are by elevating mechanism, slew gear, switching mechanism and fixed mechanism composition, wherein, described elevating mechanism is by be fixed to the inner column of installing on stand with bearing spider, be sleeved on the outer sleeve on inner column and be connected to inner column and outer sleeve between hydraulic cylinder form, described slew gear is by the driving mechanism that is arranged on inner column lower end, the feather key and the corresponding gathering sill being opened on outer sleeve that are welded on inner column form, described switching mechanism forms by being articulated with the steel arch frame turning support of outer sleeve upper end of elevating mechanism and the upset hydraulic cylinder being articulated with between steel arch frame turning support and outer sleeve, described fixed mechanism is made up of with the hook-shaped fixed arm of the piston rod end that is fixed in fixer cylinder pressure two fixer cylinder pressures that are arranged on steel arch frame turning support sidewall, described steel arch frame position correction apparatus is by vertical shift mechanism, be positioned at the transverse-moving mechanism of vertical shift mechanism top, be fixed on the reciprocating mechanism on transverse-moving mechanism, retaining mechanism and move up and down guiding mechanism composition, wherein, described vertical shift mechanism is by being arranged on two parallel vertical shift shaped steel tracks installing on stand, be installed on the vertical shift traveling roller set in vertical shift shaped steel track, the vertical shift support being arranged in vertical shift traveling roller set forms, described transverse-moving mechanism is by being arranged on vertical shift support and perpendicular to two of vertical shift shaped steel track parallel traversing shaped steel tracks, be installed on the traversing traveling roller set in traversing shaped steel track, the traversing support being arranged in traversing traveling roller set forms, described reciprocating mechanism is by four root posts that are welded on four jiaos, traversing support, the upright post connecting plate being connected on two longitudinal column tops forms with the steel arch frame bracket that is arranged on respectively the multistage hydraulic cylinder at upright post connecting plate centre position place and be connected with the piston rod end of multistage hydraulic cylinder, the described guiding mechanism that moves up and down is made up of multi-stage sleeve, the outer sleeve of multi-stage sleeve is fixed on traversing support, innermost layer sleeve is connected on steel arch frame bracket sidewall, the retaining mechanism of described fixing steel arch frame is made up of the hydraulic caliper being arranged on steel arch frame bracket sidewall.
When use, by the installation stand of the machine, the machine is arranged on chassis, also can does to such an extent that meet the station requirement for height of its upper-part by the height of stand is installed.In the situation that not having chassis to use, also can build a highly suitable truss platform, the machine is arranged on truss platform and is used.First by the hydraulic cylinder action that makes to overturn of electrical control part and hydraulic control part, promoting steel arch frame turning support upwards overturns, steel arch frame turning support is placed in to vertical configuration, then steel arch frame is arranged on steel arch frame turning support, handle subsequently two fixer cylinder pressures that are arranged on steel arch frame turning support side and regain hook-shaped fixed arm by steel arch frame lock calmly, by handling when each hydraulic cylinder makes outer sleeve up with respect to inner column with the steel arch frame on steel arch frame turning support and its, turning support is overturn downwards together with steel arch frame again, until steel arch frame lift height exceedes OCS Messenger Wire and sets level.After steel arch frame is set level, be arranged on the driving mechanism action of inner column lower end, the rotation of drive inner column, by being welded on the effect of the gathering sill of offering on feather key on inner column and outer sleeve, and then drive outer sleeve with the steel arch frame on steel arch frame turning support and its toward OCS Messenger Wire direction rotation, thereby realize the carrier cable that one end of steel arch frame is striden across to contact net.In this process, elevating mechanism and switching mechanism move simultaneously and make one end of steel arch frame stride across the backward lower upset of carrier cable and move downward, until the web of steel arch frame stops when vertical with tunnel axis.After above-mentioned action completes, steel arch frame position correction apparatus is moved to steel arch frame below along vertical shift shaped steel track, then drive steel arch frame bracket to move up by multistage hydraulic cylinder, the holder of steel arch frame is connected in steel arch frame bracket.Move up and down guiding mechanism and ensured that steel arch frame bracket does not twist in the time that multistage hydraulic cylinder rises, thereby ensured that steel arch frame bracket accurately puts to accept steel arch frame in place.Now steel arch frame has been transferred on steel arch frame position correction apparatus from the lifting of steel arch frame and turning device.After this action of the fixer cylinder pressure on steel arch frame turning support, makes hook-shaped fixed arm discharge steel arch frame.The lifting of steel arch frame and turning device are reset to original state.Make to be again positioned at the action of hydraulic caliper on steel arch frame bracket sidewall, by steel arch frame lock tightly in steel arch frame bracket.Completed subsequently the position correction of horizontal, longitudinal and upper and lower three directions of steel arch frame by transverse-moving mechanism, vertical shift mechanism and reciprocating mechanism, make steel arch frame exactly jacking be installed in the steel arch frame mounting groove of tunnel lining of appointment.After manually steel arch frame being fixed, discharge hydraulic caliper, steel arch frame position correction apparatus is reset to original state, thereby completes the mechanization installation of existing railway tunnel vault steel arch frame.
The vertical shift support of steel arch frame position correction apparatus and the movement of traversing support can be completed by artificial promotion.Also can drive the driving mechanism of vertical shift support-moving, the driving mechanism that the traversing support-moving of driving is set between traversing support and vertical shift support to complete by arranging between vertical shift support and vertical shift shaped steel track.
This steel arch frame fitting machine can also be controlled by mcu programming the action of each driving mechanism, and the automated machine that completes vault steel arch frame in existing railway tunnel to control the running orbit of steel arch frame is installed.
The present invention is by the design to steel arch frame traveling mechanism, make the running orbit of steel arch frame realize the carrier cable of leap contact net and not bump with tunnel arch wall lining cutting, steel arch frame is installed registration, the mechanization that while having realized existing railway Curing of Tunnel Diseases, the tunnel vault steel arch frame of difficulty maximum is installed, greatly reduce the labour intensity that steel arch frame is installed, improved operating efficiency, shortened the duration that tunnel lining is reinforced, secure context is also more secure.
Below in conjunction with embodiment, content of the present invention is described further.But content of the present invention is not limited in the present embodiment.
Brief description of the drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is the left view of Fig. 1
Fig. 3 is the right view of Fig. 1
Fig. 4 is the station figure before the jacking of steel arch frame
Fig. 5 is the top view of steel arch frame in Fig. 4
Fig. 6 is the station schematic diagram that the lifting of steel arch frame and turning device put the jacking of steel arch frame in place
Fig. 7 is the top view of steel arch frame in Fig. 6
Fig. 8 is that steel arch frame is transferred to the station schematic diagram on steel arch frame installation bracket
Fig. 9 is the top view of steel arch frame in Fig. 8
Figure 10 is the jacking of steel arch frame to the station schematic diagram in the steel arch frame mounting groove of tunnel lining
Detailed description of the invention
Referring to Fig. 1～10, the formation of the tunnel vault steel arch frame fitting machine that this existing railway Curing of Tunnel Diseases is used comprises installation stand 16, is arranged on steel arch frame traveling mechanism and electrical control part and the hydraulic control part of installing on stand 16, electrical control part and hydraulic control part belong to known technology part, therefore do not illustrate on figure.Described steel arch frame traveling mechanism is made up of steel arch frame position correction apparatus and the lifting of steel arch frame and the turning device that are arranged on steel arch frame position correction apparatus side, the lifting of steel arch frame and turning device are by elevating mechanism, slew gear, switching mechanism and fixed mechanism composition, wherein, described elevating mechanism is by be fixed to the inner column 9 of installing on stand 16 with bearing spider 10, be sleeved on the outer sleeve 8 on inner column 9 and be connected to inner column 9 and outer sleeve 8 between hydraulic cylinder 31 form, described slew gear is by the driving mechanism 11 that is arranged on inner column 9 lower ends, the feather key 5 and the corresponding gathering sill 4 being opened on outer sleeve 8 that are welded on inner column 9 form.Driving mechanism 11 can adopt the form of structure of drive motors being installed, gear pair is set between drive motors and inner column 9 lower ends installing on stand bottom surface.What can certainly adopt other form of structure makes inner column 9 driving mechanism around the rotation of self axis in bearing spider 10.Switching mechanism is made up of the upset hydraulic cylinder 6 that is articulated with the steel arch frame turning support 3 of outer sleeve 8 upper ends and be articulated with between steel arch frame turning support 3 and outer sleeve 8.In figure, 7 is the installing plates that are used for installing upset hydraulic cylinder 6 that are welded on outer sleeve 8.Fixed mechanism is made up of with the hook-shaped fixed arm 2 of the piston rod end that is fixed in fixer cylinder pressure 32 two the fixer cylinder pressures 32 that are arranged on steel arch frame turning support 3 sidewalls.
Described steel arch frame position correction apparatus by vertical shift mechanism, be positioned at vertical shift mechanism top transverse-moving mechanism, be fixed on reciprocating mechanism, the retaining mechanism on transverse-moving mechanism and move up and down guiding mechanism and form, wherein, described vertical shift mechanism by being arranged on two parallel vertical shift shaped steel tracks 17 installing on stand 16, be installed on the vertical shift traveling roller set 15 in vertical shift shaped steel track 17, the vertical shift support 14 being arranged in vertical shift traveling roller set 15 is formed.Described transverse-moving mechanism by being arranged on vertical shift support 14 and perpendicular to two of vertical shift shaped steel track 17 parallel traversing shaped steel tracks 19, be installed on the traversing traveling roller set 12 in traversing shaped steel track 19, the traversing support 13 being arranged in traversing traveling roller set 12 is formed.
The movement of vertical shift support 14 on vertical shift shaped steel track 17 and the movement of traversing support 13 on traversing shaped steel track 19 can be by manually completing, also can be as shown in the present embodiment motor-driven mechanism 18 by the driving vertical shift support-moving that arranges between vertical shift support 14 and vertical shift shaped steel track 17 and the driving mechanism that is articulated with the traversing support-moving of driving that the hydraulic cylinder 34 between traversing support 13 and vertical shift support 14 forms complete.Motor-driven mechanism 18 can adopt drive motors is installed on vertical shift support 14, friction pulley is being set between machine shaft and vertical shift shaped steel track 17 or the form of structure of rack-and-pinion is set between machine shaft and vertical shift shaped steel track 17.Can certainly adopt the driving mechanism of other form of structure.As a same reason, drive driving mechanism that traversing support 13 moves also can adopt the driving mechanism of other form of structure.
Described reciprocating mechanism by being welded on four root posts 20 on 13 4 jiaos, traversing support, be connected to upright post connecting plate 22 on two longitudinal column tops and be arranged on respectively the multistage hydraulic cylinder 23 at centre position place of upright post connecting plate 22 and the steel arch frame bracket 25 being connected with the piston rod end of multistage hydraulic cylinder 23 and form.The described guiding mechanism that moves up and down is made up of multi-stage sleeve, and the outer sleeve 21 of multi-stage sleeve is fixed on traversing support 13, and innermost layer sleeve 24 is connected on the sidewall of steel arch frame bracket 25 by a plate 36.The retaining mechanism of described fixing steel arch frame is made up of the hydraulic caliper 35 being arranged on the sidewall of steel arch frame bracket 25.
When use, the installation stand 16 by the machine is arranged on the machine on chassis 33 (in figure shown in double dot dash line).Certainly, also can do to such an extent that meet the station requirement for height of its upper-part by the height of stand 16 is installed.In the situation that not having chassis to use, also can build a highly suitable truss platform, the machine is arranged on truss platform and is used.In figure, 1 is tunnel arch wall lining cutting, and 26 is contact wire, and 27 is the carrier cable of contact wire 26, and 30 for connecting the dropper of contact wire 26 and carrier cable 27.First moved by electrical control part and the hydraulic control part hydraulic cylinder 6 that makes to overturn, promoting steel arch frame turning support 3 upwards overturns and is vertical configuration, then steel arch frame 29 is arranged on steel arch frame turning support 3 and by hook-shaped fixed arm 2 and is locked, as shown in Figure 4,5.The hydraulic cylinder 31 of operate lifting mechanism and the upset hydraulic cylinder 6 of switching mechanism subsequently, hydraulic cylinder 31 drives outer sleeve 8 up with respect to inner column 9 with steel arch frame turning support 3 and the steel arch frame 29 on it, the hydraulic cylinder 6 that meanwhile overturns makes turning support 3 and steel arch frame 29 downward (i.e. clockwise direction in figure) upset, until steel arch frame 29 lift heights on steel arch frame turning support exceed carrier cable 27 and set level, as shown in Figure 6,7.After steel arch frame 29 is set level, start the driving mechanism 11 that is arranged on inner column 9 lower ends of slew gear, drive inner column 9 to be rotated counterclockwise, under the effect of the gathering sill 4 of offering on the feather key 5 on inner column 9 and outer sleeve 8, and then drive outer sleeve 8 to be rotated counterclockwise, thereby realize the carrier cable 27 that one end of steel arch frame 29 is striden across to contact net.In this process, the upset hydraulic cylinder 6 of switching mechanism and the hydraulic cylinder 31 of elevating mechanism move simultaneously, make one end of steel arch frame 29 stride across the backward lower upset of carrier cable 27 and move downward, until the web of steel arch frame 29 stops when vertical with tunnel axis.After above-mentioned action completes, by motor-driven mechanism 18, steel arch frame position correction apparatus is moved to steel arch frame 29 belows along vertical shift shaped steel track 17, then drive steel arch frame bracket 25 to move up by multistage hydraulic cylinder 23,29 holders of steel arch frame are connected in steel arch frame bracket 25.Ensure that by being fixed on outer sleeve on traversing support 13 21 and being fixed on the guiding mechanism that moves up and down that the innermost layer sleeve 24 on steel arch frame bracket 25 sidewalls forms steel arch frame bracket 25 does not twist in the time that multistage hydraulic cylinder 23 rises, thereby ensured that steel arch frame bracket 25 accurately puts in place to accept steel arch frame 29.Now, steel arch frame 29 has been transferred on steel arch frame position correction apparatus from the lifting of steel arch frame and turning device, and after this fixer cylinder pressure 32 on steel arch frame turning support 3 moves, and makes hook-shaped fixed arm 2 discharge steel arch frame 29.The lifting of steel arch frame and turning device are reset to original state, as shown in Figure 8,9.Starting hydraulic caliper 35 is locked at steel arch frame 29 in steel arch frame bracket 25.Drive vertical shift support 14 to longitudinally move to the below of the tunnel lining mounting groove 28 of steel arch frame 29 by motor-driven mechanism 18 subsequently, the hydraulic cylinder 34 of transverse-moving mechanism moves, make relative vertical shift support 14 transverse shiftings of traversing support 13, the multistage hydraulic cylinder 23 of reciprocating mechanism moves, thereby complete the position correction of longitudinal, horizontal and upper and lower three directions to steel arch frame 29, make steel arch frame 29 exactly jacking be installed in the tunnel lining mounting groove 28 of appointment, as shown in figure 10.Manually fixing after steel arch frame 29, discharging hydraulic caliper 35, steel arch frame position correction apparatus is reset to original state, thereby completes the mechanization installation of existing railway tunnel vault steel arch frame.
Claims (1)
1. a tunnel vault steel arch frame fitting machine for existing railway Curing of Tunnel Diseases, comprise installation stand, be arranged on steel arch frame traveling mechanism and electrical control part and the hydraulic control part of installing on stand, it is characterized in that described steel arch frame traveling mechanism is made up of steel arch frame position correction apparatus and the lifting of steel arch frame and the turning device that are arranged on steel arch frame position correction apparatus side
The described lifting of steel arch frame and turning device are made up of elevating mechanism, slew gear, switching mechanism and fixed mechanism, wherein,
Described elevating mechanism is made up of the hydraulic cylinder that is fixed to the inner column installed on stand with bearing spider, is sleeved on the outer sleeve on inner column and is connected to inner column between outer sleeve,
Described slew gear by be arranged on inner column lower end driving mechanism, be welded on feather key on inner column and the corresponding gathering sill being opened on outer sleeve forms,
Described switching mechanism forms by being articulated with the steel arch frame turning support of outer sleeve upper end of elevating mechanism and the upset hydraulic cylinder being articulated with between steel arch frame turning support and outer sleeve,
Described fixed mechanism is made up of with the hook-shaped fixed arm of the piston rod end that is fixed in fixer cylinder pressure two fixer cylinder pressures that are arranged on steel arch frame turning support sidewall;
Described steel arch frame position correction apparatus by vertical shift mechanism, be positioned at vertical shift mechanism top transverse-moving mechanism, be fixed on reciprocating mechanism, the retaining mechanism on transverse-moving mechanism and move up and down guiding mechanism and form, wherein,
Described vertical shift mechanism by being arranged on two parallel vertical shift shaped steel tracks installing on stand, be installed on the vertical shift traveling roller set on vertical shift shaped steel track, the vertical shift support being arranged in vertical shift traveling roller set is formed,
Described transverse-moving mechanism by being arranged on vertical shift support and perpendicular to two of vertical shift shaped steel track parallel traversing shaped steel tracks, be installed on the traversing traveling roller set in traversing shaped steel track, the traversing support being arranged in traversing traveling roller set is formed,
Described reciprocating mechanism by being welded on four root posts on four jiaos, traversing support, the upright post connecting plate being connected on two longitudinal column tops forms with the steel arch frame bracket that is arranged on respectively the multistage hydraulic cylinder at upright post connecting plate centre position place and be connected with the piston rod end of multistage hydraulic cylinder
The described guiding mechanism that moves up and down is made up of multi-stage sleeve, and the outer sleeve of multi-stage sleeve is fixed on traversing support, and innermost layer sleeve is connected on steel arch frame bracket sidewall,
The retaining mechanism of described fixing steel arch frame is made up of the hydraulic caliper being arranged on steel arch frame bracket sidewall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210443890.4A CN102913259B (en) | 2012-11-08 | 2012-11-08 | Steel arch assembling machine of tunnel vault for repairing damages of existing railway tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210443890.4A CN102913259B (en) | 2012-11-08 | 2012-11-08 | Steel arch assembling machine of tunnel vault for repairing damages of existing railway tunnel |
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| CN102913259A CN102913259A (en) | 2013-02-06 |
| CN102913259B true CN102913259B (en) | 2014-07-09 |
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| CN103806927B (en) * | 2014-02-21 | 2016-04-27 | 中铁工程装备集团有限公司 | Steel arch-shelf assembling machine |
| CN103924989B (en) * | 2014-04-30 | 2016-08-10 | 重庆工商职业学院 | Tunnel steel arch-shelf installs stand and steel arch-shelf installation method |
| CN104500107B (en) * | 2014-12-11 | 2016-07-20 | 中铁西南科学研究院有限公司 | A kind of existing railway Curing of Tunnel Diseases lining cutting steel arch-shelf mounting groove groover |
| AU2016200784B1 (en) * | 2015-05-28 | 2016-06-16 | Commonwealth Scientific And Industrial Research Organisation | System and method for controlling a mining machine |
| CN107060844B (en) * | 2017-06-06 | 2023-09-26 | 中铁工程装备集团隧道设备制造有限公司 | Two-arm two-basket steel arch installing machine for tunnel and steel arch construction method |
| CN107605515A (en) * | 2017-10-27 | 2018-01-19 | 中铁西南科学研究院有限公司 | A kind of operation tunnel Disease Treatment steel arch-shelf fitting machine |
| CN108468554B (en) * | 2018-06-08 | 2023-11-17 | 涪特智能装备（重庆）有限公司 | Tunnel trolley, geotextile waterproof board and mechanical laying method of two-lining longitudinal steel bars |
| CN108894803B (en) * | 2018-09-14 | 2024-04-05 | 中交第二公路工程局有限公司 | Tunnel primary support steel frame installation auxiliary equipment and construction method thereof |
| CN111764941B (en) * | 2020-03-27 | 2021-09-03 | 同济大学 | Tunnel prefabricated steel arch frame reinforcing method |
| CN112593974B (en) * | 2020-12-03 | 2022-09-23 | 重庆文理学院 | Tunnel segment installation device and installation method thereof |
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| CN101230785B (en) * | 2008-02-22 | 2010-08-11 | 中铁二局股份有限公司 | Construction method for large section and multiple sections tunnel lining |
| JP5316895B2 (en) * | 2010-03-08 | 2013-10-16 | 清水建設株式会社 | Tunnel lining method |
| CN202031607U (en) * | 2010-09-15 | 2011-11-09 | 深圳市华森机电技术有限公司 | Duct piece mounting device |
| CN202148909U (en) * | 2011-07-29 | 2012-02-22 | 中铁一局集团有限公司 | Operation vehicle for mounting tunnel arch trusses |
| CN202926344U (en) * | 2012-11-08 | 2013-05-08 | 中铁西南科学研究院有限公司 | Tunnel vault steel arch frame mounting machine for existing railway tunnel disease repairing |
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