Telescopic widened section trolley

Abstract

The utility model discloses a telescopic widened section trolley which comprises a formwork and a portal frame, the portal frame comprises a plurality of cross beams arranged in parallel, the two ends of each cross beam are connected with upper longitudinal beams through bolts respectively, the formwork comprises a first arch formwork, a second arch formwork, a first side formwork and a second side formwork which are of an arc-shaped structure, and the upper end of the first arch formwork and the upper end of the second arch formwork are connected through bolts. The upper ends of the first side formwork and the second side formwork are hinged to the lower ends of the first arch formwork and the second arch formwork respectively, the middle of the first arch formwork and the middle of the second arch formwork are hinged to one end of an arch formwork rotating oil cylinder respectively, and the other end of the arch formwork rotating oil cylinder is hinged to the cross beam. When the formwork needs to be widened and erected, the connection between the first arch formwork and the second arch formwork is loosened, the arch formwork rotating oil cylinder is operated to stretch out and draw back, the first arch formwork and the second arch formwork are opened, then the first side formwork and the second side formwork are opened outwards, external expansion of the formwork is achieved, a trolley is rapidly and autonomously transferred, the formwork is erected for an emergency parking strip lining, equipment disassembly is reduced, and construction risks are reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of lining trolleys, specifically relating to a telescopic widened cross-section trolley. Background Technology

[0002] Currently, all long highway tunnels are designed with emergency stopping lanes, and a long tunnel often has more than one. Traditional methods for constructing emergency stopping lane linings involve: after the main tunnel lining is completed, using a main tunnel trolley with a comb-shaped arch frame, then laying small steel molds on the arch frame for lining; or replacing the arch formwork on the main tunnel trolley; or erecting separate scaffolding to fabricate I-beam arch frames and small steel molds for lining. All three methods suffer from long lining cycles, high construction risks, and difficulties in relocation. Therefore, there is an urgent need for a retractable, widened cross-section trolley to enable rapid relocation for emergency stopping lane lining formwork, reducing equipment disassembly and lowering construction risks. Utility Model Content

[0003] The purpose of this invention is to provide a retractable, widened cross-section trolley that enables rapid site transfer, provides formwork support for emergency parking lane lining, reduces equipment disassembly, and lowers construction risks.

[0004] The technical solution adopted by this utility model is a telescopic widened cross-section trolley, including a template and a gantry. The gantry includes multiple parallel crossbeams, with upper longitudinal beams bolted to both ends of the crossbeams. The template includes an arch mold I, an arch mold II, a side mold I, and a side mold II with an arc-shaped structure. The upper ends of arch mold I and arch mold II are bolted together, and their lower ends are respectively hinged to the top surface of the upper longitudinal beam. The upper ends of side mold I and side mold II are respectively hinged to the lower ends of arch mold I and arch mold II. The middle parts of arch mold I and arch mold II are respectively hinged to one end of an arch mold rotating cylinder, and the other end of the arch mold rotating cylinder is hinged to the crossbeam.

[0005] Furthermore, the two ends of the aforementioned crossbeam are fixedly connected to the columns downwards, the bottom ends of the columns are bolted to the lower longitudinal beam, and the lower ends of the lower longitudinal beam are connected to the walking system via outriggers. The lower parts of side mold one and side mold two are located outside the walking system and are horizontally hinged to the side mold telescopic cylinders with the lower longitudinal beam.

[0006] Furthermore, the aforementioned crossbeam is a telescopic sleeve structure, including an outer sleeve and an inner sleeve. The outer sleeve is a hollow pipe with an opening at one end. The closed end of the outer sleeve is bolted to the upper longitudinal beam. An inner and outer sleeve connector is provided on the outer wall of the outer sleeve near the opening. The inner sleeve is movably fitted inside the outer sleeve, with one end extending from the opening and bolted to the upper longitudinal beam at the other end. A width adjustment cylinder is hinged between the inner wall of the outer sleeve and the outer wall of the inner sleeve. The width adjustment cylinder extends, causing the inner sleeve to move outward. The inner and outer sleeve connector is used to fasten the outer sleeve and the inner sleeve.

[0007] Furthermore, connecting seat 1 and connecting seat 2 are welded to the middle parts of arch formwork 1 and arch formwork 2 respectively. The bottom end of connecting seat 1 or connecting seat 2 is bolted to the top of the small column. The bottom end of the small column is bolted to the top surface of the small longitudinal beam. The bottom end of the small longitudinal beam is bolted to the top surface of the cross beam.

[0008] Furthermore, multiple anchor jacks are hinged at intervals on the inner side of the bottom end of the aforementioned lower longitudinal beam. The bottom ends of the anchor jacks are inclined downwards and fixed against the support surface. Multiple side mold anchor jacks are hinged at intervals on the bottom ends of side mold one and side mold two. The bottom ends of the side mold anchor jacks are inclined downwards and fixed against the support surface. A side mold jack is provided on one side of the side mold telescopic cylinder. One end of the side mold jack is hinged to the side mold or side mold two, and the other end is hinged to the lower longitudinal beam.

[0009] Compared with the prior art, the beneficial effects of this utility model are that by designing the template as a combination, it is composed of four modules: arch mold one, arch mold two, side mold one, and side mold two. The top ends of arch mold one and arch mold two are detachably fixed, and the bottom ends are hinged to the upper longitudinal beam. Arch mold one and arch mold two are each hinged with an arch mold rotating cylinder. When it is necessary to widen the formwork, the connection between arch mold one and arch mold two is loosened, and the arch mold rotating cylinder is operated to extend and retract, so that arch mold one and arch mold two open. Then, side mold one and side mold two are opened outward, realizing the outward expansion of the template and the rapid autonomous transfer of the trolley. This provides formwork support for emergency parking lane lining, reduces equipment disassembly, and lowers construction risks. Attached Figure Description

[0010] Figure 1 Axonometric schematic diagram of the lining trolley assembly;

[0011] Figure 2 A front view schematic diagram of the lining trolley formwork assembly;

[0012] Figure 3 Axonometric schematic diagram of the lining trolley gantry assembly;

[0013] Figure 4 A front view schematic diagram of the telescopic sleeve beam structure;

[0014] Figure 5 A canometric schematic diagram of the connection between the walking system and the side columns;

[0015] Figure 6 This is a schematic diagram of the walking system.

[0016] Figure 7 A frontal cross-sectional schematic diagram of the connection between the walking system and the outriggers;

[0017] Figure 8 A schematic diagram of the lateral cross-sectional structure of the connection between the walking system and the outriggers;

[0018] Figure 9 This is a diagram showing the state of the template inside the main opening;

[0019] Figure 10 This refers to the state of the template moving, rotating, and retracting within the main tunnel. Figure 1 ;

[0020] Figure 11 This refers to the state of the template moving, rotating, and retracting within the main tunnel. Figure 2 ;

[0021] Figure 12 This refers to the state of the template moving, rotating, and retracting within the main tunnel. Figure 3 ;

[0022] Figure 13 This refers to the state of the template moving, rotating, and retracting within the main tunnel. Figure 4 . Detailed Implementation

[0023] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it.

[0024] Example 1

[0025] like Figure 1-4 As shown, a telescopic widened section trolley includes a template 1 and a gantry 2, comprising a template 1, a gantry 2, a walking system 3, a hydraulic system 4, and a support system 5; wherein, the hydraulic system 4 includes an arch formwork rotating cylinder 41, a side formwork telescopic cylinder 42, and a width adjusting cylinder 43; the support system 5 includes a foundation jack 51, a side formwork foundation jack 52, a side formwork jack 53, and a trestle jack 54.

[0026] The aforementioned gantry 2 includes multiple parallel crossbeams 23, with upper longitudinal beams 22 bolted to both ends of the crossbeams 23. The template 1 includes an arch mold 11, an arch mold 22, a side mold 13, and a side mold 24 with an arc-shaped structure. The upper ends of the arch mold 11 and the arch mold 22 are bolted together, and their lower ends are respectively hinged to the top surface of the upper longitudinal beam 22. The upper ends of the side mold 13 and the side mold 24 are respectively hinged to the lower ends of the arch mold 11 and the arch mold 22. The middle parts of the arch mold 11 and the arch mold 2 are respectively hinged to one end of the arch mold rotating cylinder 41, and the other end of the arch mold rotating cylinder 41 is hinged to the crossbeam 23. When it is necessary to widen the formwork, loosen the connection between arch formwork 11 and arch formwork 212, and operate the arch formwork rotating cylinder 41 to extend and retract, so that arch formwork 11 and arch formwork 212 open, realizing the expansion of formwork 1 and the rapid autonomous transfer of the trolley, which provides formwork for emergency parking lining, reduces equipment disassembly, and lowers construction risks.

[0027] The aforementioned crossbeam 23 is fixedly connected to columns at both ends, and the bottom of the columns is bolted to the lower longitudinal beam 21. The lower longitudinal beam 21 is connected to the walking system 3 via support legs 29 at both ends. The lower parts of side mold 1 13 and side mold 2 14 are located outside the walking system 3 and are horizontally hinged to the lower longitudinal beam 21 by side mold telescopic cylinder 42. While opening arch mold 1 11 and arch mold 2 12, the side mold telescopic cylinder 42 is operated to extend, and side mold 1 13 and side mold 2 14 are opened outward quickly, realizing the outward expansion of the entire template, avoiding manual operation, improving efficiency, and reducing loading and unloading risks.

[0028] To widen the lining trolley, the crossbeam 23 is a telescopic sleeve structure, including an outer sleeve 231 and an inner sleeve 232. The outer sleeve 231 is a hollow pipe with an opening at one end. The closed end of the outer sleeve 231 is bolted to the upper longitudinal beam 22. An inner-outer sleeve connector 233 is provided on the outer wall of the outer sleeve 231 near the opening. The inner sleeve 232 is movably fitted inside the outer sleeve 231, with one end extending from the opening and bolted to the upper longitudinal beam 22 at the other end. A width adjusting cylinder 43 is hinged between the inner wall of the outer sleeve 231 and the outer wall of the inner sleeve 232. The width adjusting cylinder 43 extends, causing the inner sleeve 232 to move outward. The inner-outer sleeve connector 233 is used to fasten the outer sleeve 231 and the inner sleeve 232. In the lining or traveling state of the trolley, the outer sleeve 231 and the inner sleeve 232 of the crossbeam 23 are bolted together as a whole, used as a complete crossbeam. When the trolley needs to be widened, loosen the connection between the inner sleeve 232 and the outer sleeve 231, operate the width adjustment cylinder 43 to extend the crossbeam 23 and widen the entire gantry, and then use the inner and outer sleeve connector 233 to tighten the inner sleeve 232 and the outer sleeve 231 to ensure sufficient support stability for the template.

[0029] To enhance the supporting capacity and structural stability of the arch formwork, connecting seats 111 and 121 are welded to the middle parts of the arch formwork 11 and 121 respectively. Connecting seats 111 and 121 are bolted to the top of the small column 26. The bottom of the small column 26 is bolted to the top surface of the small longitudinal beam 27. The bottom of the small longitudinal beam 27 is bolted to the top surface of the cross beam 23. The longitudinal beam 28 is bolted between multiple cross beams 23.

[0030] To improve the stability of the trolley during construction, when the trolley is stationary and ready for lining, multiple anchor jacks 51 are hinged at intervals on the inner side of the bottom end of the lower longitudinal beam 21. The bottom ends of the anchor jacks 51 are inclined downwards and fixed against the support surface. Multiple side formwork anchor jacks 52 are hinged at intervals on the bottom ends of side formwork 13 and side formwork 24. The bottom ends of the side formwork anchor jacks 52 are inclined downwards and fixed against the support surface. A side formwork jack 53 is provided on one side of the side formwork telescopic cylinder 42. One end of the side formwork jack 53 is hinged to side formwork 13 or side formwork 24, and the other end is hinged to the lower longitudinal beam 21.

[0031] Example 2

[0032] like Figure 1-6 As shown, a telescopic widened section trolley includes a template 1, a gantry 2, a walking system 3, a hydraulic system 4, and a support system 5; wherein, the hydraulic system 4 includes an arch formwork rotating cylinder 41, a side formwork telescopic cylinder 42, a width adjusting cylinder 43, a vertical cylinder 44, and a horizontal pushing cylinder 45; the support system 5 includes a foundation jack 51, a side formwork foundation jack 52, a side formwork jack 53, and a trestle jack 54.

[0033] The gantry 2 includes a lower longitudinal beam 21, an upper longitudinal beam 22, a crossbeam 23, side columns 24, a middle column 25, a small column 26, a small longitudinal beam 27, a connecting longitudinal beam 28, and support legs 29. Multiple crossbeams 23 are arranged in parallel. The crossbeams 23 adopt a telescopic structure. The upper longitudinal beam 22 is bolted to both ends of each crossbeam 23. The columns are fixed downwards at both ends of the crossbeams 23. The columns include side columns 24 located at the front and rear ends of the trolley and a middle column 25 located in the middle of the trolley. The bottom ends of both side columns 24 and middle column 25 are bolted to the lower longitudinal beam 21. A traveling system 3 is located below both ends of the lower longitudinal beam 21. The traveling system 3 can rotate 90 degrees to allow the trolley to travel longitudinally or laterally. The template 1 includes an arch mold 11, an arch mold 2 12, a side mold 13, and a side mold 2 14 with an arc-shaped structure. The upper ends of the arch mold 11 and the arch mold 2 12 are bolted together, and the lower ends are respectively hinged to the top surface of the upper longitudinal beam 22. The upper ends of the side mold 13 and the side mold 2 14 are respectively hinged to the lower ends of the arch mold 11 and the arch mold 2 12. The lower parts of the side mold 13 and the side mold 2 14 are located outside the walking system 3 and are horizontally hinged to the side mold telescopic cylinder 42 between them and the lower longitudinal beam 21. The middle parts of the arch mold 11 and the arch mold 2 12 are respectively hinged to one end of the arch mold rotating cylinder 41, and the other end of the arch mold rotating cylinder 41 is hinged to the crossbeam 23 of the gantry 2. A combined template and telescopic crossbeam 23 are used. Arch formwork 11 and arch formwork 22 are hinged to arch formwork rotating cylinder 41, which is hinged to the crossbeam 23. After loosening the connection between arch formwork 11 and arch formwork 22, the arch formwork rotating cylinder 41 and the crossbeam 23 are extended by operating the arch formwork rotating cylinder 41. A sealing connecting plate is installed between arch formwork 11 and arch formwork 22 to achieve the outward expansion of the arch formwork to meet the lining requirements of the emergency parking lane. This is convenient and quick, and eliminates the need to use the main tunnel trolley to install a comb-shaped arch frame and then lay small steel molds on the comb-shaped arch frame for lining, or replace the arch formwork of the main tunnel trolley for lining, or set up scaffolding to process steel arch frames and small steel molds for lining, thus improving the safety factor.

[0034] To widen the lining trolley, the crossbeam 23 is a telescopic sleeve structure, including an outer sleeve 231 and an inner sleeve 232. The outer sleeve 231 is a hollow pipe with an opening at one end. The closed end of the outer sleeve 231 is bolted to the upper longitudinal beam 22. An inner and outer sleeve connector 233 is provided on the outer wall of the outer sleeve 231 near the opening. The inner sleeve 232 is movably sleeved inside the outer sleeve 231, with one end extending from the opening and bolted to the other end of the upper longitudinal beam 22. A width adjustment cylinder 43 is hinged between the inner wall of the outer sleeve 231 and the outer wall of the inner sleeve 232. The width adjustment cylinder 43 extends to drive the inner sleeve 232 to move outward. The inner and outer sleeve connector 233 is used to fasten the outer sleeve 231 and the inner sleeve 232.

[0035] In the lining or traveling state of the trolley, the outer sleeve 231 and inner sleeve 232 of the crossbeam 23 are bolted together as a whole using the inner and outer sleeve connector 233, and used as a complete crossbeam. When the trolley changes from traveling in the main tunnel to lining in the emergency stopping lane, the inner and outer sleeve connectors 233 of each crossbeam 23 are removed, the traveling wheel on the widened side is rotated 90 degrees, and the width adjustment cylinder 43 and the traveling wheel 31 on the widened side are operated at the same time to make the gantry 2 structure on the widened side move towards the side with increased width until the width of the gantry 2 reaches the lining setting position and stops. Then the outer sleeve 231 and inner sleeve 232 of the crossbeam 23 are bolted together as a whole using the inner and outer sleeve connector 233. With the inner sleeve 232 and the outer sleeve 231 in a movable sleeve state, the crossbeam 23 is lengthened by extending the operating width adjustment cylinder to adapt to the changes in the expansion of the upper template and the widening of the spacing of the lower walking system 3, thus meeting the requirements for overall stable support of the trolley. The method of lengthening the crossbeam 23 is simple and convenient, effectively saving multiple loading and unloading procedures and reducing construction risks.

[0036] To enhance the supporting capacity and structural stability of the arch formwork, connecting seats 111 and 121 are welded to the middle parts of the arch formwork 11 and 121 respectively. Connecting seats 111 and 121 are bolted to the top of the small column 26. The bottom of the small column 26 is bolted to the top surface of the small longitudinal beam 27. The bottom of the small longitudinal beam 27 is bolted to the top surface of the cross beam 23. The longitudinal beam 28 is bolted between multiple cross beams 23.

[0037] Furthermore, the aforementioned walking system 3 includes a walking wheel 31, a walking wheel frame 32, and a drive mechanism 33. To facilitate walking and simplify the track laying process, the walking wheel 31 is a solid rubber wheel. The drive mechanism 33 includes a drive motor 331, a drive sprocket 332, and a driven sprocket 333. The walking wheel 31 is installed inside the walking wheel frame 32 via a transmission shaft 34. The top of the walking wheel frame 32 is bolted to the support leg 29. The drive mechanism 33 connects to the transmission shaft 34 to drive the walking wheel 31 to move. Specifically, the drive motor is fixedly installed on the outside of the walking wheel frame 32. The output shaft of the drive motor is fixedly connected to the drive sprocket. The drive sprocket is connected to the driven sprocket via a transmission chain. The driven sprocket is fixedly installed on the transmission shaft on one side of the walking wheel 31. The drive motor drives the driven sprocket to rotate through the drive sprocket, thereby causing the transmission shaft to rotate and the walking wheel 31 to rotate and move.

[0038] A slot 211 is longitudinally formed at the connection between the lower longitudinal beam 21 and the side column 24. A cavity 241 is provided at the lower part of the side column 24. The upper part of the support leg 29 passes through the slot 211, penetrates the lower longitudinal beam 21, and extends into the cavity 241 of the side column 24. The top of the support leg 29 is bolted to the telescopic rod of the vertical cylinder 44. The cylinder seat of the vertical cylinder 44 is bolted to the top plate of the cavity 241. The bottom of the support leg 29 is bolted to the walking system 3. The cylinder seat and telescopic rod of the vertical cylinder 44 can... The system allows for relative extension, retraction, and rotation. A positioning key 212 is horizontally positioned at the center of the slot 211 of the lower longitudinal beam 21. A guide groove 291 is formed on the side wall of the support leg 29 to match the positioning key 212. The positioning key 212 passes through the guide groove 291 and is screwed to both ends of the support leg 29. When the traveling wheel is in forward movement, the positioning key is installed to limit the movement of the support leg 29. Operating the vertical cylinder 44 allows the support leg 29 to move up and down while maintaining horizontal stability. A jack 54 is bolted to the bottom of the lower longitudinal beam 21 on one side of the support leg 29. A pad 55 is bolted to the bottom of the jack 54. When the vertical cylinder 44 retracts, the pad 54 extends from the bottom of the traveling wheel 31 to support the weight of the trolley. When the vertical cylinder 44 extends, the bottom of the traveling wheel 31 extends from the pad 54 to support the trolley's movement. To achieve longitudinal and lateral movement of the system, it is designed to be rotatable, meaning the support leg 29 can drive the system to rotate 90°. When widening is required, the vertical hydraulic cylinder 44 retracts, the trestle jack 54 extends, the pad block 55 supports the trolley, and the traveling wheel 31 moves upward and is suspended in the air. The rotation of the vertical hydraulic cylinder 44 drives the outrigger 29 to rotate, and the traveling wheel 31 rotates 90° outward to achieve the purpose of widening.

[0039] To improve the stability of the trolley during construction, when the trolley is stationary and ready for lining, multiple anchor jacks 51 are hinged at intervals on the inner side of the bottom end of the lower longitudinal beam 21. The bottom ends of the anchor jacks 51 are inclined downwards and fixed against the support surface. Multiple side formwork anchor jacks 52 are hinged at intervals on the bottom ends of side formwork 13 and side formwork 24. The bottom ends of the side formwork anchor jacks 52 are inclined downwards and fixed against the support surface. A side formwork jack 53 is provided on one side of the side formwork telescopic cylinder 42. One end of the side formwork jack 53 is hinged to side formwork 13 or side formwork 24, and the other end is hinged to the lower longitudinal beam 21.

[0040] A horizontal moving seat 6 is also provided between the outrigger 29 and the walking system 3. The top surface of the horizontal moving seat 6 near the outer end has a sliding groove 61 and a sliding cavity 62 inside. The bottom end of the outrigger 29 has a round tube 292, which is located in the sliding cavity 62 and is coaxial with the horizontal moving seat 6. The outrigger 29 is slidably connected to the horizontal moving seat 6 through the sliding groove 61. The inner end of the horizontal moving seat 6 extends into the trolley, and the top end is connected to the outrigger 29 through connecting ears. A horizontal pushing cylinder 45 is installed. A horizontal sliding sleeve 63 is sleeved in the round tube 292 and its two ends are fixedly connected to the horizontal moving seat 6. The bottom end of the outer end of the horizontal moving seat 6 is bolted to the top of the walking wheel frame 32. When only a small range of adjustment of the walking width or the walking centerline is needed, the horizontal pushing cylinder 45 is extended and retracted to make the horizontal moving seat 6 and the outrigger 29 move relative to each other, thereby adjusting the position of the walking wheel 31 of the walking system 3. The operation is convenient and the practicality is strong.

[0041] Operating principle:

[0042] First, install the lining trolley outside the tunnel. During installation, retract the gantry beam first, such as... Figure 9-13 First, dismantle the small columns. Keep arch formwork one stationary. Then, push the rotating cylinder of arch formwork two upwards to separate the connection between arch formwork one and arch formwork two. Next, operate the rotating cylinder of arch formwork one to lower arch formwork one. Then, operate the rotating cylinder of arch formwork two to lower arch formwork two. Arch formwork one and arch formwork two will be in a folded state. At the same time, retract the crossbeam to its shortest length. In the retracted state, continuously adjust the distance between arch formwork one and arch formwork two to ensure the dimensions of the tunnel face. In this state, the trolley can travel in the tunnel section. During the process of entering the tunnel, adjust the centerline of the trolley as a whole. Operate the rotating cylinder of arch formwork and crossbeam in reverse order according to the dimensions of the tunnel to open arch formwork one and arch formwork two until the construction requirements of the tunnel are met. Install and tighten the inner and outer sleeve connectors of the crossbeam. Tighten the connection between the top of arch formwork one and the top of arch formwork two.

[0043] When the emergency stopping lane section is reached, extend the saddle jack and retract the vertical cylinder. The support trolley is then suspended in the air. Remove the positioning key and manually rotate the walking system outward by 90°. The walking wheels, horizontal moving seat, and outriggers will all rotate 90°. Then reinstall the positioning key to fix the outriggers horizontally. Extend the vertical cylinder and move the outriggers downward in a directional direction until the walking wheels contact the support surface. Retract the saddle jack and suspend the support block in the air. At this point, the walking system can move.

[0044] Disassemble the inner and outer sleeve connectors. The outer and inner sleeves are in a telescopic state. Extend the operating width adjustment cylinder. The inner and outer sleeves move outward relative to each other to widen the crossbeam. At the same time, the drive mechanism drives the traveling wheels to move to both sides, so that the trolley gantry is widened to the lining working position. Install and tighten the inner and outer sleeve connectors. Loosen the connection between arch formwork one and arch formwork two. Then operate the arch formwork rotation cylinder to open arch formwork one and arch formwork two. Then install the small column between arch formwork one, arch formwork two and the small longitudinal beam. Then connect and tighten the arch formwork on both sides with bolts. This completes the change of the trolley lining state of the emergency stop lane. Then adjust the centerline according to the conventional trolley operation. Finally, the lining operation is completed. After the lining of the entire section of the emergency stop lane is completed, change to the main tunnel traveling state in the reverse order of entering the emergency stop lane and then move to the next working face.

[0045] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.

Claims

1. A retractable, widened cross-section trolley, comprising a template (1) and a gantry (2), characterized in that, The gantry (2) includes multiple parallel crossbeams (23), with the two ends of the crossbeams (23) bolted to the upper longitudinal beams (22). The template (1) includes an arc-shaped arch mold one (11), an arch mold two (12), a side mold one (13), and a side mold two (14). The upper ends of the arch mold one (11) and the arch mold two (12) are bolted together, and the lower ends are respectively hinged to the top surface of the upper longitudinal beam (22). The upper ends of the side mold one (13) and the side mold two (14) are respectively hinged to the lower ends of the arch mold one (11) and the arch mold two (12). The middle parts of the arch mold one (11) and the arch mold two (12) are respectively hinged to one end of the arch mold rotating cylinder (41), and the other end of the arch mold rotating cylinder (41) is hinged to the crossbeam (23).

2. The telescopic widened cross-section trolley according to claim 1, characterized in that, The two ends of the crossbeam (23) are fixedly connected to the columns, and the bottom of the columns are bolted to the lower longitudinal beam (21). The lower ends of the lower longitudinal beam (21) are connected to the walking system (3) through the legs (29). The lower parts of the side mold one (13) and the side mold two (14) are located outside the walking system (3) and are horizontally hinged to the side mold telescopic cylinder (42) between the side mold and the lower longitudinal beam (21).

3. The telescopic widened cross-section trolley according to claim 1, characterized in that, The crossbeam (23) is a telescopic sleeve structure, including an outer sleeve (231) and an inner sleeve (232). The outer sleeve (231) is a hollow pipe with an opening at one end. The closed end of the outer sleeve (231) is bolted to the upper longitudinal beam (22). The outer wall of the outer sleeve (231) near the opening is provided with an inner and outer sleeve connector (233). The inner sleeve (232) is movably sleeved inside the outer sleeve (231) and one end extends out from the opening and is bolted to the upper longitudinal beam (22) at the other end. A width adjustment cylinder (43) is hinged between the inner wall of the outer sleeve (231) and the outer wall of the inner sleeve. The width adjustment cylinder (43) extends and drives the inner sleeve (232) to move outward. The inner and outer sleeve connector (233) is used to fasten the outer sleeve (231) and the inner sleeve (232).

4. The telescopic widened cross-section trolley according to claim 1, characterized in that, The middle parts of the arch mold one (11) and the arch mold two (12) are respectively welded with connecting seat one (111) and connecting seat two (121). The bottom end of connecting seat one (111) or connecting seat two (121) is bolted to the top end of the small column (26). The bottom end of the small column (26) is bolted to the top surface of the small longitudinal beam (27). The bottom end of the small longitudinal beam (27) is bolted to the top surface of the cross beam (23).

5. A retractable, widened cross-section trolley according to claim 2, characterized in that, The lower longitudinal beam (21) has multiple foot jacks (51) hinged at intervals on the inner side of its bottom end. The bottom ends of the foot jacks (51) are inclined downwards and abut against the support surface for fixation. The bottom ends of the side molds (13) and (14) have multiple side mold foot jacks (52) hinged at intervals. The bottom ends of the side mold foot jacks (52) are inclined downwards and abut against the support surface for fixation. The side mold telescopic cylinder (42) has a side mold jack (53) on one side. One end of the side mold jack (53) is hinged to the side mold (13) or the side mold (14), and the other end is hinged to the lower longitudinal beam (21).

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