CN217761016U - Large-section round tunnel bottom arch concrete lining needle beam slip form trolley - Google Patents
Large-section round tunnel bottom arch concrete lining needle beam slip form trolley Download PDFInfo
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- CN217761016U CN217761016U CN202221632950.2U CN202221632950U CN217761016U CN 217761016 U CN217761016 U CN 217761016U CN 202221632950 U CN202221632950 U CN 202221632950U CN 217761016 U CN217761016 U CN 217761016U
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Abstract
The utility model discloses a large-section round tunnel bottom arch concrete lining needle beam slip form trolley, which comprises a portal frame, a needle beam, a portal frame needle beam staggered moving mechanism, a template device and a template adjusting mechanism; the portal passes through track and first travelling wheel and needle bar sliding connection, and the template device is located between portal front and back end landing leg structure, and template adjustment mechanism installs on two sets of track mounting brackets, and the crisscross moving mechanism of portal needle bar is including installing jacking cylinder and the translation drive assembly of installing on the needle bar on needle bar front support and the needle bar rear support. The utility model discloses an adopt relative motion's principle, through the back-and-forth movement that portal and needle beam are realized to needle beam support and portal landing leg structure's alternative supporting role cooperation translation drive assembly, rely on the platform truck dead weight to accomplish anti superficial, through the concrete lining of template adjustment mechanism cooperation template device completion end arch, effectively solved the numerous and diverse problem of template process, avoid end arch concrete appearance quality defect and end arch no system to strut anti superficial.
Description
Technical Field
The utility model relates to a tunnel concrete construction equipment, in particular to big circular tunnel bottom arch concrete lining needle beam slipform platform truck of section.
Background
In the design process of the hydraulic tunnel, the water passing tunnel is designed into a circular section because the stress condition of the circular section is better than that of other section types. In order to save the engineering construction investment, part of the engineering is optimally designed on the premise of meeting the relevant specifications, and the bottom arch is 120 degrees and has no primary support structure. The conventional round tunnel bottom arch concrete lining construction adopts a die-turning and plastering process, the construction process is complex, a large amount of manpower and material resources are needed, the template is easy to float upwards, and a large amount of lacing bars are needed to be used for anti-floating measures. The inverted arch concrete molding process often uses system anchor rods as tie bars. Due to the particularity of part of projects, system anchor rod support is not designed in the 120-degree range of the bottom arch, a common tie bar system is easy to lose efficacy under the geological influence of altered rock, and huge economic cost is increased if the tie bars are lengthened to increase the anchoring length or the tie bar spacing is increased, so that project operation is not facilitated. The technical level of the long-distance underground water-conveying tunnel engineering in China is continuously improved, the long-distance water-conveying tunnel engineering has the characteristics of large hole diameter, long tunnel line, large buried depth and the like, engineering geological conditions are associated with the construction period of the tunnel engineering, part of the engineering geological conditions of the tunnel are altered rocks, the altered rocks are weak expansive rocks with low water absorption rate, the alteration effect is mainly to reduce cohesive force of the rocks, the effect of water on the altered rocks is also mainly to reduce the cohesive force, and the weakening effect of water is enhanced along with the increase of the alteration degree. Therefore, the construction period of the excavation period is difficult to guarantee, and the pressure is high.
In addition, the tunnel bottom arch concrete is an upward cambered surface, concrete bubbles are difficult to completely remove by a common template process, quality defects such as air holes, pitted surfaces and the like are easy to form, the concrete has higher anti-freezing requirement, and air entraining is not beneficial to eliminating surface bubbles; accumulated water adhered to the surface of the template is difficult to remove, and quality defects such as dog holes, exposed tendons and the like are easily formed. In view of the high roughness requirement of hydraulic tunnels, the generation and treatment of the common appearance quality problems need to be solved or reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a large-section circular tunnel bottom arch concrete lining needle beam slip form trolley, which adopts the principle of relative motion, realizes the movement of the trolley and a sliding template by taking the alternation of a needle beam support and a portal support leg as a fulcrum, and completes the anti-floating by the self weight of the trolley; the large-section round tunnel bottom arch concrete lining needle beam slip form trolley can complete the concrete lining of the bottom arch, is convenient to construct, saves cost, is high in efficiency and saves the construction period.
The utility model adopts the technical proposal that:
a large-section round tunnel bottom arch concrete lining needle beam slip form trolley comprises a portal, needle beams, a portal needle beam staggered moving mechanism, a template device and a template adjusting mechanism; the portal is of a portal frame structure with a downward opening, portal supporting leg structures formed by supporting legs and supporting leg cross beams are arranged at the front end and the rear end of the portal, and two sides of the portal opening are connected with the supporting leg structures through connecting longitudinal beams; the needle beam is of a rectangular frame structure, is positioned in an opening of the portal frame and penetrates through the portal frame from front to back, a front needle beam support and a rear needle beam support are arranged at the front end and the rear end of the needle beam, rails are fixedly arranged on the two sides of the top and the bottom of the middle section of the needle beam, and first travelling wheels matched with the rails are arranged on the top in the portal frame and the template device; the template device is positioned between the front end and rear end support leg structures of the portal and comprises arc-shaped tracks, track mounting frames, splayed screw jacks and sliding templates, the two sets of track mounting frames are respectively close to the front end support leg structures and the rear end support leg structures, the two sets of track mounting frames are respectively connected with connecting longitudinal beams on two sides of the portal opening through the splayed screw jacks, two ends of the track mounting frames extend to positions close to the inner wall of the tunnel, two sets of arc-shaped tracks extending to the center of the bottom of the tunnel are symmetrically mounted on two sides of each set of track mounting frame, the two sets of sliding templates are positioned below the two sets of track mounting frames and extend from the front ends to the rear ends of the portal, and the two sets of sliding templates are respectively slidably mounted on the four sets of arc-shaped tracks through roller assemblies; the template adjusting mechanisms are arranged on the two groups of rail mounting frames and can drive the roller components to move on the arc-shaped rails, so that the sliding template moves along the arc-shaped rails to carry out a plastering process on concrete poured on the bottom arch of the tunnel; the staggered moving mechanism for the portal needle beams comprises jacking oil cylinders and a translation transmission assembly, the jacking oil cylinders are installed on a needle beam front support and a needle beam rear support, the translation transmission assembly is installed on the needle beams, the jacking oil cylinders can drive the needle beam front support and the needle beam rear support to stretch out and retract relative to the needle beams, the needle beam front support and the needle beam rear support contact with a tunnel bottom arch to form fulcrums when the jacking oil cylinders stretch out, portal support leg structures at the front end and the rear end of the portal contact with the tunnel bottom arch to form fulcrums when the jacking oil cylinders retract, the portal can move back and forth relative to the needle beams through the translation transmission assembly when the needle beam front support and the needle beam rear support contact with the tunnel bottom arch to form fulcrums, and when the portal support leg structures at the front end and the rear end of the portal contact with the tunnel bottom arch to form fulcrums, the needle beams can move back and forth relative to the portal through the translation transmission assembly.
Further, the translation transmission assembly comprises a translation winch, a translation pulley block and a translation steel wire rope; the two translation winches are fixedly arranged in the middle of the needle beam, the four translation pulley blocks are arranged at the upper ends of the front side and the rear side of the needle beam, the two translation pulley blocks are arranged at the upper ends of the front side and the rear side of the portal frame, one ends of the two translation steel wire ropes are tied to the two winches respectively, and the other ends of the two translation steel wire ropes are fixed at the front end and the rear end of the needle beam after bypassing the translation pulley blocks at the front side and the rear side of the needle beam and the translation pulley blocks at the front side and the rear side of the portal frame in sequence respectively.
Furthermore, the number of the jacking oil cylinders is four, the four jacking oil cylinders are located at four corners of the bottom of the needle beam, and the needle beam is connected with the front needle beam support and the rear needle beam support through the jacking oil cylinders.
Further, a centering adjusting mechanism is arranged among the jacking oil cylinder, the needle beam front support and the needle beam rear support, and the centering adjusting mechanism comprises a second travelling wheel and a transverse oil cylinder; the bottom of four jacking cylinders all installs the second walking wheel, and jacking cylinder passes through second walking wheel and needle beam front support and needle beam rear support sliding connection, and horizontal cylinder level respectively locates on needle beam front support and the needle beam rear support, and its one end is articulated through mount pad and needle beam front support or needle beam rear support, and the other end of two horizontal cylinders is articulated with the second walking wheel of needle beam homonymy.
Further, the template adjusting mechanism comprises an adjusting pulley block, an adjusting steel wire rope and an adjusting winch; four regulation hoists fixed mounting are in the top both sides of two sets of track mounting brackets, and a plurality of regulation assembly pulley fixed mounting are in the inner edge side and the end department of arc track, and the one end of adjusting wire rope is tied on adjusting the hoist, and the other end is walked around the regulation pulley block and is organized on the wheel components who is connected with the template that slides.
Furthermore, a supporting foot cushion block is detachably arranged at the bottom of the portal supporting leg structure at the front side of the portal, a rotating supporting foot is arranged at the bottom of the portal supporting leg structure at the rear side of the portal supporting leg structure, and a bottom plate of the rotating supporting foot is an arc-shaped plate; the bottom of the needle beam front support is detachably provided with a support leg cushion block, the bottom of the needle beam rear support is provided with a rotating support leg, and a bottom plate of the rotating support leg is an arc-shaped plate.
Furthermore, the track mounting frame is composed of a track cross beam, a connecting upright post and a connecting cross beam, and the whole track mounting frame is in a fan shape; two arc tracks are connected respectively at the both ends of track crossbeam, connect the stand and be a plurality of, connect the one end and the track crossbeam fixed connection of stand, the other end and arc track fixed connection, connect crossbeam and track crossbeam parallel arrangement, and connect the crossbeam and be located track crossbeam below, connect the both ends of crossbeam and be located two of intermediate position and be connected stand fixed connection.
The beneficial effects of the utility model are that:
the needle beam slip form trolley for the bottom arch concrete lining of the large-section circular tunnel adopts the principle of relative motion, the front support and the rear support of the needle beam are designed to be telescopic, the supporting points of the trolley are changed, the needle beam front-and-back movement and the portal front-and-back movement are completed through the translation transmission assembly when different supporting points are used, the trolley travels in the tunnel through the needle beam front-and-back movement, and the portal front-and-back movement realizes the concrete lining of the bottom arch section of the tunnel. In addition, the large-section round tunnel bottom arch concrete lining needle beam slip form trolley adopts a template adjusting mechanism to match with a template device to carry out a plastering process on concrete poured by a tunnel bottom arch, so that anchor bar preparation procedures and tie bar installation procedures are reduced, the templates do not need to be manually disassembled and carried, the cost is saved, and a large amount of workload is reduced; meanwhile, the slip form plastering process solves the quality defects of bubbles, holes and the like of the bottom arch pitted surface, improves the concrete lining quality and reduces the investment of processing defects; the positioning of the embedded part can be effectively adjusted in the initial setting period, and meanwhile, the loss of the embedded pipe hole can be avoided.
According to the large-section round tunnel bottom arch concrete lining needle beam slip form trolley, because the whole trolley has large self weight, the trolley can resist floating through self weight or an additional system is added to enhance the anti-floating; this circular tunnel bottom arch concrete lining needle beam slipform platform truck of big section passes through the cooperation between each mechanism, can accomplish the concrete lining of bottom arch, and construction convenience, saving cost, efficient, saving time limit for a project.
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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the installation positions of the template device and the template adjusting mechanism of the present invention;
fig. 3 and 4 are schematic structural diagrams of the front end and the rear end of the gantry of the present invention;
FIG. 5 is a schematic view of the end face structure of the needle beam of the present invention;
in fig. 1-5, 1-gantry, 2-needle beam, 3-gantry support leg structure, 4-connecting longitudinal beam, 5-needle beam front support, 6-needle beam rear support, 7-rail, 8-first traveling wheel, 9-arc rail, 10-rail mounting rack, 11-splayed screw jack, 12-sliding template, 13-roller component, 14-jacking oil cylinder, 15-translational winch, 16-translational pulley block, 17-translational steel wire rope, 18-second traveling wheel, 19-transverse oil cylinder, 20-adjusting pulley block, 21-adjusting steel wire rope, 22-adjusting winch, 23-support leg cushion block, 24-rotating support leg, 25-rail beam, 26-connecting upright post, 27-connecting beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, the embodiment discloses a large-section round tunnel bottom arch concrete lining needle beam slip form trolley, which comprises a portal 1, a needle beam 2, a portal needle beam staggered moving mechanism, a template device and a template adjusting mechanism. As shown in fig. 1, 3 and 4, the portal 1 is of a portal frame structure with a downward opening, the portal 1 is integrally made of steel by welding, the front end and the rear end of the portal 1 are respectively provided with a portal supporting leg structure 3, the portal supporting leg structure 3 is formed by welding supporting leg cross beams between two supporting legs, the bottom parts of the two sides of the opening of the portal 1 are welded with connecting longitudinal beams 4 extending from front to back, and the portal supporting leg structures 3 are installed on the connecting longitudinal beams 4. The bottom detachable of the portal landing leg structure 3 of portal 1 front side installs stabilizer blade cushion 23, makes it can adjust the height, and the rotation stabilizer blade 24 is installed to the portal landing leg structure 3's of rear side bottom, and the bottom plate of rotating stabilizer blade 24 is the arc, makes its ability self-adaptation laminating pour the arc bottom arch.
As shown in fig. 1, 2 and 5, the needle beam 2 is a rectangular frame structure, the whole needle beam 2 is made of steel by welding, and a plurality of inclined struts are arranged in the frame; needle beam 2 is located portal 1's opening and by preceding portal 1 that runs through backward, the top and the bottom both sides fixed mounting of 2 interlude of needle beam have four tracks 7, top in the portal 1 is equipped with two first walking wheels 8 of 2 interlude top tracks 7 of cooperation needle beam, set up two first walking wheels 8 of 2 interlude bottom tracks 7 of cooperation needle beam on the template device equally, establish sliding connection relation through first walking wheel 8 and track 7 between needle beam 2 and the portal 1.
In order to control the sliding connection between the needle beam 2 and the door frame 1, the needle beam 2 is also provided with a translation transmission assembly, and the translation transmission assembly comprises a translation winch 15, a translation pulley block 16 and a translation steel wire rope 17; two translation winches 15 are fixedly arranged in the middle of the needle beam 2 through a mounting plate, one translation winch 15 is used for moving forwards, one translation winch 15 is used for moving backwards, four translation pulley blocks 16 are arranged at the upper ends of the front side and the rear side of the needle beam 2, two translation pulley blocks 16 are arranged at the upper ends of the front side and the rear side of the gantry 1, the two translation steel wire ropes 17 are respectively used for moving forwards and moving backwards, one ends of the two translation steel wire ropes 17 are tied to the two winches respectively, the other ends of the two translation steel wire ropes 17 bypass the translation pulley blocks 16 on the front side and the rear side of the needle beam 2 respectively, and the translation pulley blocks 16 on the front side and the rear side of the gantry 1 are fixed at the front end and the rear end of the needle beam 2.
Further, considering that the front and back sliding between the needle beam 2 and the door frame 1 are relative, except that the door frame leg structure 3 at the front end and the back end of the door frame 1 forms a group of fulcrums, the front end and the back end of the needle beam 2 in this embodiment are also provided with a needle beam front support 5 and a needle beam back support 6, the bottom of the needle beam front support 5 is detachably provided with a support foot cushion block 23, so that the height of the support foot can be adjusted, the bottom of the needle beam back support 6 is provided with a rotating support foot 24, the bottom plate of the rotating support foot 24 is an arc-shaped plate, so that the arc-shaped bottom arch can be self-adaptively attached, and the four corners at the bottom of the needle beam 2 are connected with the needle beam front support 5 and the needle beam back support 6 through four jacking oil cylinders 14, so that the needle beam front support 5 and the needle beam back support 6 can be telescopic relative to the needle beam 2; the jacking oil cylinder 14 extends out of the needle beam front support 5 and the needle beam rear support 6 to contact with a tunnel bottom arch to form a fulcrum, and at the moment, the translation winch 15 can enable the gantry 1 to move back and forth relative to the needle beam 2 by winding a steel wire rope, so that the template device is driven to move back and forth; when the jacking oil cylinder 14 contracts, the portal support leg structures 3 at the front end and the rear end of the portal 1 contact the bottom arch of the tunnel to form a fulcrum, and at the moment, the translation winch 15 can enable the needle beam 2 to move back and forth relative to the portal 1 by winding a steel wire rope. The translation transmission assembly and the jacking oil cylinder 14 form a portal needle beam staggered moving mechanism of the large-section circular tunnel bottom arch concrete lining needle beam slip form trolley, and the large-section circular tunnel bottom arch concrete lining needle beam slip form trolley integrally completes the front and back movement in the tunnel through the exchange of the two groups of supporting points.
As shown in fig. 1 and 2, the template device is located between the leg structures at the front and rear ends of the gantry 1, and comprises an arc-shaped rail 9, a rail mounting rack 10, a splayed screw jack 11 and a sliding template 12. The two groups of track mounting frames 10 are respectively close to a front end support leg structure and a rear end support leg structure, each track mounting frame 10 is composed of a track cross beam 25 and a connecting upright post 26, the track mounting frames 10 are made of steel materials through welding, and the whole track mounting frames are in a sector shape; the two ends of the track cross beam 25 are respectively connected with the two arc-shaped tracks 9, the connecting upright posts 26 are six, the six connecting upright posts 26 are symmetrically arranged, one end of each connecting upright post 26 is fixedly connected with the track cross beam 25, and the other end of each connecting upright post is fixedly connected with the arc-shaped track 9, so that the arc-shaped tracks 9 and the track cross beam 25 are connected into a whole; after the arc-shaped track 9 and the track cross beam 25 are connected to form a whole, the arc-shaped track is connected with the connecting longitudinal beams 4 on two sides of the opening of the portal frame 1 through four splayed screw jacks 11, one end of each splayed screw jack 11 is hinged with the connecting longitudinal beam 4 on two sides of the opening of the portal frame 1, and the other end of each splayed screw jack is hinged with the connecting upright post 26 through a hinge seat on the connecting upright post 26, so that the template device is installed on the portal frame 1. In order to enhance the strength of the track mounting frame 10, a connecting beam 27 parallel to the track beam 25 is further arranged between the two connecting columns 26 at the middle position, the connecting beam 27 is located below the track beam 25, and two ends of the connecting beam 27 are welded with the two connecting columns 26 at the middle position. The both ends of track mounting bracket 10 are to being close to the extension of tunnel inner wall position, two sets of arc tracks 9 that the equal symmetry in both sides of every group track mounting bracket 10 installation extends to tunnel bottom center department, it is two sets of to slide template 12, two sets of capable templates are located the below of two sets of track mounting brackets 10 and extend by the front end of portal 1 rear end, the front end and the rear end of two sets of template 12 of sliding are respectively through two sets of roller components 13 slidable mounting on four sets of arc tracks 9, slide template 12 passes through roller components 13 and establishes the sliding connection relation with arc track 9.
In order to control the sliding connection between the sliding template 12 and the arc-shaped track 9, so that the sliding template 12 can move along the arc-shaped track 9 to perform a plastering process on concrete poured on a bottom arch of a tunnel, as shown in fig. 2, in this embodiment, template adjusting mechanisms are installed on two sets of track installation frames 10, and each template adjusting mechanism comprises an adjusting pulley block 20, an adjusting steel wire rope 21 and an adjusting winch 22; four adjusting winches 22 are fixedly arranged on two sides of the top of the two sets of track mounting frames 10, two adjusting pulley blocks 20 are fixedly arranged on the inner edge side of the arc-shaped track 9, one adjusting pulley block 20 is fixedly arranged at the end of the arc-shaped track 9, one end of an adjusting steel wire rope 21 is tied on the adjusting winches 22, and the other end of the adjusting steel wire rope bypasses the adjusting pulley blocks 20 and is tied on a roller component 13 connected with the sliding template 12. When the adjusting winch 22 works, the adjusting winch winds the adjusting steel wire rope 21, the adjusting steel wire rope 21 pulls the roller assembly 13 to slide on the sliding template 12, the sliding template 12 smears concrete poured on a bottom arch of the tunnel, and when the adjusting winch 22 reversely releases, the sliding template 12 restores to an initial position under the action of self gravity.
As a preferred technical solution of this embodiment, as shown in fig. 5, a centering adjustment mechanism is further provided between the jacking cylinder 14 and the needle beam front support 5 and the needle beam rear support 6, and the centering adjustment mechanism includes a second road wheel 18 and a transverse cylinder 19; the bottom of the four jacking oil cylinders 14 is provided with a second walking wheel 18, the jacking oil cylinders 14 are in sliding connection with the needle beam front support 5 and the needle beam rear support 6 through the second walking wheel 18, the transverse oil cylinders 19 are respectively and horizontally arranged on the needle beam front support 5 and the needle beam rear support 6, one end of each transverse oil cylinder is hinged with the needle beam front support 5 or the needle beam rear support 6 through a mounting seat, and the other ends of the two transverse oil cylinders 19 are hinged with the second walking wheel 18 on the same side of the needle beam 2.
The operation of moving the large-section round tunnel bottom arch concrete lining needle beam slip form trolley in place is as follows:
firstly, starting a jacking oil cylinder 14 to lift the needle beam 2 and the gantry 1 off the ground, and enabling a needle beam front support 5 and a needle beam rear support 6 to contact with a tunnel bottom arch to form a fulcrum; then starting a translation winch 15 of the translation transmission assembly to pull a translation steel wire rope 17 to enable the gantry 1 to slide to a designed position on the needle beam 2; then starting a transverse oil cylinder 19 of the centering adjusting mechanism to adjust the positions of the needle beam 2 and the portal 1 relative to the needle beam front support 5 and the needle beam rear support 6, so that the portal 1 is in a tunnel centering position; and then adjusting supporting leg cushion blocks 23 and rotating supporting legs 24 of supporting leg structures at the front end and the rear end of the portal 1, slowly descending the needle beam 2 and the portal 1 through the jacking oil cylinder 14 to enable the sliding template 12 to reach the designed height, and enabling the supporting leg structures at the front end and the rear end of the portal 1, the front supporting seat 5 of the needle beam and the rear supporting seat 6 of the needle beam to be in contact with a bottom arch of the tunnel, so that concrete construction can be carried out. After the concrete lining is finished, the jacking oil cylinder 14 is contracted to lift the needle beam front support 5 and the needle beam rear support 6; and then starting a translation winch 15 of the translation transmission assembly to pull a translation steel wire rope 17, enabling the needle beam 2 to slide relative to the gantry 1 to a next storehouse pouring position, and repeating the moving steps to finish uninterrupted walking operation.
This circular tunnel bottom arch concrete lining needle beam slipform platform truck of big section adopts relative motion's principle, through before with the needle beam, rear support 5 and 6 design for the telescopic, and then changes the fulcrum of platform truck, accomplishes 2 back-and-forth movement actions of needle beam and 1 back-and-forth movement actions of portal through translation drive assembly when different fulcrums, 2 back-and-forth movement of needle beam realize the walking of platform truck in the tunnel, the concrete lining of portal 1 back-and-forth movement realization tunnel bottom arch section. In addition, the large-section round tunnel bottom arch concrete lining needle beam slip form trolley adopts a template adjusting mechanism to match with a template device to carry out a plastering process on concrete poured by a tunnel bottom arch, so that anchor bar preparation procedures and tie bar installation procedures are reduced, the templates do not need to be manually disassembled and carried, the cost is saved, and a large amount of workload is reduced; meanwhile, the slip form plastering process solves the quality defects of bubbles, holes and the like of the bottom arch pitted surface, improves the concrete lining quality and reduces the investment of processing defects. This circular tunnel bottom arch concrete lining needle beam slipform platform truck of big section is because the whole dead weight of platform truck is great, so accessible dead weight anti-floating or increase additional system and strengthen anti-floating.
Engineering example: the length of a diversion tunnel of a hydropower station is 9040m, the maximum excavation diameter of a circular section reaches 15.64m, the diameter of a lining section is 13.1m, and the thickness of the lining is 1.0m. The originally planned bottom arch is constructed by adopting a rollover process, a non-system anchor rod of the bottom arch within 120 degrees of the tunnel is designed to be used as a steel bar lacing wire, and if the length of the increased lacing wire is too short, the anchoring effect cannot be realized due to the influence of the characteristics of the altered rock; the self-weight anti-floating of the large-section round tunnel bottom arch concrete lining needle beam slip form trolley or the additional system is added to strengthen anti-floating, the turnover form mounting and dismounting process is reduced, the turnover form process mounting time of a 12m bin bottom arch is 8-12 hours, the slip form is in place and calibrated, and the plug construction time is about 4 hours; the template does not need to be provided with the tie bars generally, anchor bar preparation procedures and tie bar installation procedures are reduced, the template does not need to be disassembled and assembled manually and carried, the cost is saved, and a large amount of workload is reduced; meanwhile, the slip form plastering process solves the quality defects of bubbles, holes and the like of the pitted surface of the bottom arch, improves the concrete lining quality and reduces the investment of processing the defects; the positioning of the embedded part can be effectively adjusted in the initial setting period, and meanwhile, the loss of the embedded pipe hole can be avoided.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
It should be noted that the track, the traveling wheel, the arc-shaped track, the roller assembly, the splayed screw jack 11, the oil cylinder, the winch, the pulley block and the steel wire rope mentioned in this embodiment are commercially available products, and the detailed structure, the installation process, the circuit connection and the control principle thereof are not described in detail herein.
Claims (7)
1. The utility model provides a round tunnel bottom arch concrete lining needle beam slipform platform truck of big section which characterized in that: the large-section round tunnel bottom arch concrete lining needle beam slip form trolley comprises a portal, needle beams, a portal needle beam staggered moving mechanism, a template device and a template adjusting mechanism;
the portal is of a portal frame structure with a downward opening, portal supporting leg structures formed by supporting legs and supporting leg cross beams are arranged at the front end and the rear end of the portal, and two sides of the portal opening are connected with the supporting leg structures through connecting longitudinal beams; the needle beam is of a rectangular frame structure, is positioned in an opening of the portal frame and penetrates through the portal frame from front to back, a front needle beam support and a rear needle beam support are arranged at the front end and the rear end of the needle beam, rails are fixedly arranged on the two sides of the top and the bottom of the middle section of the needle beam, and first travelling wheels matched with the rails are arranged on the top in the portal frame and the template device; the template device is positioned between the front end and rear end support leg structures of the portal and comprises arc-shaped tracks, track mounting frames, splayed screw jacks and sliding templates, the two sets of track mounting frames are respectively close to the front end support leg structures and the rear end support leg structures, the two sets of track mounting frames are respectively connected with connecting longitudinal beams on two sides of the portal opening through the splayed screw jacks, two ends of the track mounting frames extend to positions close to the inner wall of the tunnel, two sets of arc-shaped tracks extending to the center of the bottom of the tunnel are symmetrically mounted on two sides of each set of track mounting frame, the two sets of sliding templates are positioned below the two sets of track mounting frames and extend from the front ends to the rear ends of the portal, and the two sets of sliding templates are respectively slidably mounted on the four sets of arc-shaped tracks through roller assemblies;
the template adjusting mechanisms are arranged on the two groups of rail mounting frames and can drive the roller components to move on the arc-shaped rails, so that the sliding template moves along the arc-shaped rails to carry out a plastering process on concrete poured on the bottom arch of the tunnel; the staggered moving mechanism for the needle beam of the portal comprises a jacking oil cylinder and a translation transmission assembly, the jacking oil cylinder is installed on a front needle beam support and a rear needle beam support, the translation transmission assembly is installed on the needle beam, the jacking oil cylinder can drive the front needle beam support and the rear needle beam support to stretch out and retract relative to the needle beam, the front needle beam support and the rear needle beam support contact with a bottom arch of the tunnel to form a fulcrum when the jacking oil cylinder extends out, a portal support leg structure at the front end and the rear end of the portal contacts with the bottom arch of the tunnel to form the fulcrum, the portal can move back and forth relative to the needle beam through the translation transmission assembly when the front needle beam support and the rear needle beam support contact with the bottom arch of the tunnel to form the fulcrum, and the needle beam can move back and forth relative to the portal through the translation transmission assembly when the portal support leg structure at the front end and the rear end of the portal contacts with the bottom arch of the tunnel to form the fulcrum.
2. The large-section round tunnel bottom arch concrete lining needle beam slip form trolley according to claim 1, characterized in that: the translation transmission assembly comprises a translation winch, a translation pulley block and a translation steel wire rope; the two translation winches are fixedly arranged in the middle of the needle beam, the four translation pulley blocks are arranged at the upper ends of the front side and the rear side of the needle beam, the two translation pulley blocks are arranged at the upper ends of the front side and the rear side of the portal frame, one ends of the two translation steel wire ropes are tied to the two winches respectively, and the other ends of the two translation steel wire ropes are fixed at the front end and the rear end of the needle beam after bypassing the translation pulley blocks at the front side and the rear side of the needle beam and the translation pulley blocks at the front side and the rear side of the portal frame in sequence respectively.
3. The large-section round tunnel bottom arch concrete lining needle beam slip form trolley according to claim 1, characterized in that: the number of the jacking oil cylinders is four, the four jacking oil cylinders are located at four corners of the bottom of the needle beam, and the needle beam is connected with the front needle beam support and the rear needle beam support through the jacking oil cylinders.
4. The large-section round tunnel bottom arch concrete lining needle beam slip form trolley according to claim 3, characterized in that: a centering adjusting mechanism is also arranged among the jacking oil cylinder, the needle beam front support and the needle beam rear support, and the centering adjusting mechanism comprises a second travelling wheel and a transverse oil cylinder; the bottom of four jacking cylinders all installs the second walking wheel, and jacking cylinder passes through second walking wheel and needle beam front support and needle beam rear support sliding connection, and horizontal cylinder level respectively locates on needle beam front support and the needle beam rear support, and its one end is articulated through mount pad and needle beam front support or needle beam rear support, and the other end of two horizontal cylinders is articulated with the second walking wheel of needle beam homonymy.
5. The large-section round tunnel bottom arch concrete lining needle beam slip form trolley according to claim 1, characterized in that: the template adjusting mechanism comprises an adjusting pulley block, an adjusting steel wire rope and an adjusting winch; four adjusting winches are fixedly arranged on two sides of the tops of the two groups of track mounting racks, a plurality of adjusting pulley blocks are fixedly arranged on the inner edge side and the end of the arc-shaped track, one end of each adjusting steel wire rope is tied to the adjusting winches, and the other end of each adjusting steel wire rope bypasses the adjusting pulley blocks to be connected to the roller assemblies connected with the sliding template.
6. The large-section round tunnel bottom arch concrete lining needle beam slip form trolley according to claim 1, characterized in that: the bottom of the portal support leg structure on the front side of the portal is detachably provided with a support leg cushion block, the bottom of the portal support leg structure on the rear side of the portal is provided with a rotating support leg, and a bottom plate of the rotating support leg is an arc-shaped plate; the bottom of needle roof beam front bracket is detachable installs the stabilizer blade cushion, and the bottom of needle roof beam rear bracket is installed and is rotated the stabilizer blade, rotates the bottom plate of stabilizer blade and is the arc.
7. The large-section round tunnel bottom arch concrete lining needle beam slip form trolley according to claim 1, characterized in that: the track mounting rack is composed of a track cross beam, a connecting upright post and a connecting cross beam, and the whole track mounting rack is in a fan shape; two arc tracks are connected respectively at the both ends of track crossbeam, connect the stand and be a plurality of, connect the one end and track crossbeam fixed connection of stand, the other end and arc track fixed connection, connect crossbeam and track crossbeam parallel arrangement, and connect the crossbeam and be located track crossbeam below, connect the both ends of crossbeam and be located two of intermediate position and be connected stand fixed connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221632950.2U CN217761016U (en) | 2022-06-28 | 2022-06-28 | Large-section round tunnel bottom arch concrete lining needle beam slip form trolley |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221632950.2U CN217761016U (en) | 2022-06-28 | 2022-06-28 | Large-section round tunnel bottom arch concrete lining needle beam slip form trolley |
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| CN217761016U true CN217761016U (en) | 2022-11-08 |
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| CN202221632950.2U Active CN217761016U (en) | 2022-06-28 | 2022-06-28 | Large-section round tunnel bottom arch concrete lining needle beam slip form trolley |
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| Country | Link |
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