Multifunctional trolley for open-cut subway station main body structure and using method

Abstract

The invention discloses a multifunctional trolley of an open cut subway station main body structure and a using method, and belongs to the technical field of tunnel engineering.The multifunctional trolley comprises a support mechanism, a telescopic top plate working platform is arranged at the top of the support mechanism, and the two sides, opposite to station side walls, of the support mechanism are connected with formwork mechanisms through opening and closing mechanisms; the template mechanism can be driven by the opening and closing mechanism to turn over, open and close; a vibrating mechanism is arranged on a support, close to the formwork mechanism, of the support mechanism and can penetrate through the formwork mechanism to vibrate station side wall concrete pouring work. Automatic rail conveying mechanisms are arranged at the two ends of the bottom of the support mechanism and used for automatic rail conveying movement of the trolley in the station construction direction. The multifunctional trolley is stable in structure, can adapt to construction of stations with different spans, can conduct integral pouring and vibrating at the same time, is high in applicability, guarantees the concrete pouring strength at the same time, can be automatically conveyed to a rail to move, reduces the working intensity of workers, and improves the construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering, and in particular to a multifunctional trolley for a main structure of an open-cut subway station and a use method thereof. Background Art

[0002] In recent years, with the increasing pressure of urban traffic, major cities have started subway construction. The open-cut subway station is the construction method that construction units give priority to due to its advantages such as simple process, short construction period and low cost. The main structure of the subway open-cut station is generally a large-span column-free or double-layer single-column two-span reinforced concrete rectangular frame structure. The conventional construction method is to first tie the steel bars, and then cast the side walls and slabs from bottom to top layer by layer. Because the station structure slab usually has a reserved passage, and because the span of the station structure is generally more than 18m, when tying the steel bars, it is necessary to build scaffolding from the bottom to the top at the bottom of the foundation pit, and the workers step on the scaffolding to work. This construction method wastes time and has great safety hazards.

[0003] At present, the conventional construction process of the main structure of the subway open-cut station is to use a combination of fixed small steel formwork and bamboo plywood, and the support system is a full-floor scaffolding plus square wood or I-beam back ribs to support and block the side walls and panels that need to be cast. This process is simple to obtain materials and convenient to construct, but it is not convenient to adjust the height and lateral distance during support; at the same time, it is more troublesome to disassemble, and it cannot be cast in an integral manner, which affects the quality of the finished product and prolongs the construction period; and when the main structure is constructed in the rainy season and winter, the subway station is constructed in the open air, and the workers work on the scaffolding. Rain and snow make the frame slippery, and workers are prone to slipping and falling and other risks of working at high places; in addition, when the heavy construction equipment used in the construction of traditional subway stations moves forward, the road surface is mostly a structural plate, often with reserved openings, and it is easy to damage the bearing capacity of the plate. The combination of sleepers and rails is mostly used. When the equipment moves forward a certain distance, the tail track and sleepers need to be manually transported to the front of the construction equipment, which has the disadvantages of high labor intensity, high risk and low construction efficiency. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a multifunctional trolley for the main structure of an open-cut subway station and a method for using the trolley, which is assembled from a support mechanism, a template mechanism, a vibrating mechanism, an opening and closing mechanism, and an automatic rail delivery mechanism. The overall structure of the trolley is stable and can adapt to the construction of stations with different spans, providing convenience for workers' operations. At the same time, integral pouring and vibration can be performed, and the applicability is strong while ensuring the strength of the concrete pouring. The trolley can automatically deliver rails and move, thereby reducing the work intensity of workers and improving construction efficiency.

[0005] The technical solution of the present invention is as follows:

[0006] In a first aspect of the present invention, a multifunctional trolley for the main structure of an open-cut subway station is provided, comprising a support mechanism, a retractable top plate working platform is provided on the top of the support mechanism, the support mechanism is connected to a formwork mechanism on both sides relative to the station side walls through an opening and closing mechanism, and the formwork mechanism can be flipped open and closed under the drive of the opening and closing mechanism; a vibrating mechanism is provided on the support of the support mechanism close to the formwork mechanism, and the vibrating mechanism can vibrate the concrete pouring operation of the station side wall through the formwork mechanism; automatic rail delivery mechanisms are provided at both ends of the bottom of the support mechanism for automatically delivering rails and moving the trolley along the station construction direction.

[0007] In some embodiments of the present invention, the support mechanism is provided with a plurality of vertical supports, a plurality of transverse supports are provided between the vertical supports close to the station side wall, and a ladder is provided between the plurality of transverse supports; a template mechanism is provided on the side of the transverse support opposite to the station side wall, an opening and closing mechanism is provided on the vertical support, and the opening and closing mechanism is connected to the template mechanism to drive the template mechanism to flip and open.

[0008] In some embodiments of the present invention, the template mechanism includes two side wall templates, and the two ends of the two side wall templates close to the bracket mechanism are connected to an opening and closing mechanism, and the opening and closing mechanism drives the two side wall templates to open and close.

[0009] In some embodiments of the present invention, the formwork mechanism is provided with a protective fence, the bottom of which is hinged to the side wall formwork; a maintenance window is provided in the middle of the side wall formwork, and the maintenance window is used for a vibrating mechanism to pass through to vibrate the station side wall concrete pouring operation.

[0010] In some embodiments of the present invention, the opening and closing mechanism includes a rolling rod, which is arranged on a side of the side wall formwork close to the vertical bracket, and two opening and closing clamps are provided at both ends of the rolling rod, and the two opening and closing clamps are respectively connected to the vertical brackets.

[0011] In some embodiments of the present invention, the opening and closing pliers are provided with a telescopic column, the telescopic column is connected to the vertical bracket, and two pliers are provided at one end of the telescopic column away from the vertical bracket, and the two pliers are respectively connected to two side wall templates.

[0012] In some embodiments of the present invention, the vibrating mechanism includes a moving block, which is slidably connected to a vertical bracket. A connecting rod mechanism is provided at one end of the moving block away from the vertical bracket. The end of the connecting rod mechanism is connected to a vibrating disk. A plurality of insertable vibrating shafts are provided at the bottom of the vibrating disk. A health block is provided on the side of the vibrating disk, and the health block is connected to an atomizing nozzle.

[0013] In some embodiments of the present invention, a hydraulic mechanism is provided at the bottom of the plurality of vertical supports, and a bottom horizontal support is connected between the hydraulic mechanisms near the side wall of the station;

[0014] The automatic rail delivery mechanism includes a foot support and a moving box; the foot support is telescopically arranged on a bottom hydraulic mechanism of a vertical support, a push block is arranged on the bottom transverse support, the push block abuts against the moving box, and the moving box is connected to the guide rail.

[0015] In some embodiments of the present invention, a pulley is provided inside the movable box, and the pulley is connected to the guide rail; a plurality of clamping wheels are provided at the bottom of the movable box, and slide grooves are provided on both sides of the guide rail, and the plurality of clamping wheels are arranged in the slide grooves on both sides of the guide rail to clamp the guide rail.

[0016] In a second aspect of the present invention, a method for using a multifunctional trolley for an open-cut subway station main structure is provided, comprising the following steps:

[0017] Transport the trolley to the construction site, lay the guide rails, and install the automatic rail delivery mechanism and guide rails at the bottom of the trolley;

[0018] Open the formwork mechanism and telescopically adjust the top plate working platform to move the formwork mechanism to the position where the steel bars are tied on the side wall of the foundation pit. Adjust the hydraulic mechanism of the trolley to further adjust the trolley to a suitable working position.

[0019] The guardrail of the formwork mechanism is raised, and the workers reach the side wall construction position by climbing the ladder, place the materials on the formwork mechanism, and start tying the steel bars at different heights;

[0020] After the reinforcement is tied, the side wall formwork is opened and closed to the appropriate position through the opening and closing mechanism, and the plugging plate is placed to block the side wall formwork and both ends of the side wall, and then the concrete pouring begins. During the pouring process, the concrete is poured and mixed in layers, and the concrete is fully mixed. Finally, it is cured by sprinkling water through the curing block;

[0021] After the maintenance is completed, the trolley is moved to lower the support legs to support the ground, the moving box drives the guide rail off the ground, and the clamping wheel moves to transport the guide rail along the construction direction. After the guide rail is transported to the right place, the support legs are raised and the moving box drives the guide rail to be laid on the ground, and the trolley moves on the guide rail through the pulley.

[0022] One or more technical solutions of the present invention have the following beneficial effects:

[0023] The present invention provides a multifunctional trolley for the main structure of an open-cut subway station and a method for using the trolley. The support mechanism adopts a spliced ​​structure with a retractable cover plate in the middle. The structure is stable and can adapt to the construction of stations with different spans. At the same time, if the span of the station changes during the construction process, the support mechanism can be retracted to adapt to the construction of the expanded sections at both ends of the station.

[0024] The height of each floor of the station foundation pit is usually 5-8 meters. The side wall formwork mechanism proposed by the present invention can not only speed up the workers' tying of steel bars, but also enhance safety due to the surrounding protective railings, and can be assembled into a formwork mechanism for pouring concrete, greatly improving its scope of application;

[0025] In addition, during the construction of subway foundation pits, large-section and large-volume concrete pouring will occur. The volume of concrete in the construction project is large, and the construction difficulty will also increase sharply. The rotating attachment plus stirring and inserting vibrating mechanism proposed in the present invention can fully mix various materials in the concrete by rotating while pouring and vibrating the concrete, which can effectively ensure the uniformity of the concrete, can more efficiently discharge the air in the concrete, reduce the pores in the concrete, and improve the strength and durability of the concrete.

[0026] By setting the opening and closing mechanism, the clamp part is fixedly connected to the short side of the side wall formwork, and the shaft part is connected to the long side of the side wall formwork, the transition from the steel bar binding platform to the side wall casting formwork can be controlled, and the position of the side wall formwork can be adjusted through the telescopic column at the bottom, so that its operability is further improved;

[0027] By setting up an automatic rail delivery mechanism, the trolley can be automatically delivered and moved forward, reducing the workload of workers and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the overall structure of a multifunctional trolley of the main structure of an open-cut subway station provided in Example 1 of the present invention;

[0029] Figure 2 A schematic diagram of a template mechanism provided in Example 1 of the present invention;

[0030] Figure 3 is a schematic diagram of a vibrating mechanism provided in Example 1 of the present invention;

[0031] Figure 4 is a schematic diagram of the opening and closing mechanism provided in Example 1 of the present invention;

[0032] Figure 5 is a schematic diagram of the automatic rail feeding mechanism provided in Example 1 of the present invention;

[0033] Figure 6 It is a schematic diagram of the connection structure of the side wall formwork in the formwork mechanism provided in Example 1 of the present invention.

[0034] In the figure: 1. bracket mechanism; 2. formwork mechanism; 3. vibrating mechanism; 4. opening and closing mechanism; 5. automatic rail feeding mechanism; 6. side wall formwork; 7. protective fence; 8. connecting pin; 9. latch; 10. maintenance window; 11. reserved interface; 12. fixing bolt; 13. vertical bracket; 14. moving block; 15. first connecting rod; 16. second connecting rod; 17. vibrating plate; 18. vibrating shaft; 19. health block; 20. atomizing nozzle; 21. opening and closing clamp; 22. rolling rod; 23. telescopic column; 24. fixed body; 25. first column; 26. second column; 27. moving block; 28. foot support; 29. ​​horizontal bracket; 30. pushing block; 31. pulley; 32. clamping wheel; 33. moving box; 34. guide rail; 35. limit block; 36. ladder; 37. hydraulic mechanism; 38. sealing plate. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Example 1

[0037] In a typical embodiment of the present invention, a multifunctional trolley for the main structure of an open-cut subway station is proposed, which includes a support mechanism 1, a formwork mechanism 2, a vibrating mechanism 3, an opening and closing mechanism 4, and an automatic rail feeding mechanism 5. The overall structure has better stability. The formwork mechanism 2 is located on both sides of the support mechanism 1 and is connected by the opening and closing mechanism 4. The vibrating mechanism 3 is arranged on the inner side of the vertical support 13 of the support mechanism 1 and on the back side of the formwork mechanism 2. The operation is performed through the maintenance window 10. The opening and closing mechanism 4 connects the support mechanism 1 and the formwork mechanism 2. The automatic rail feeding mechanism 5 is located at the bottom of the support mechanism 1.

[0038] A retractable and movable cover plate 38 is provided in the middle of the structure of the support mechanism 1 to prevent concrete from spilling during pouring. The support mechanism 1 is composed of multiple vertical supports 13 and horizontal supports 29, and is divided into multiple parts, which can be freely retracted. The support mechanism 1 is divided into three layers, the top layer is a plate working platform, and the position is adjusted by a hydraulic mechanism 37. The remaining two layers are side wall working platforms, which are connected in series by a ladder 36;

[0039] The side wall formwork 6 is provided with multiple anti-slip patterns on the free surface, the side wall formwork 6 facing the concrete surface is kept smooth and coated with a release agent, and a sealing rubber strip is provided at its edge to maintain better sealing when closed, prevent concrete leakage at the formwork joints, and perform integral pouring, so that the finished product quality is better.

[0040] The side wall formwork 6 is divided into two parts, the upper and lower parts. When tying the steel bars, the two parts are combined into one part through the fixing bolts 12 at the corner points. When pouring concrete, loosen the fixing bolts 12, open the opening and closing clamps 21, so that the steel bar tying platform becomes the side wall formwork 6, and the side side has a reserved interface 11, which can be mortise and tenon jointed, or high-strength bolts can be used to connect multiple side wall formworks 6 to adapt to foundation pits of different spans; protective fences 7 are provided on both sides of the side wall formwork 6, and the bottom of the protective fence 7 is hinged to the side wall formwork 6 through a connecting pin 8. When tying the steel bars, the protective fence is fixed by a pin 9. When pouring concrete, the side wall formwork 6 is fitted with the protective fence 7; the side wall formwork 6 has protrusions on both sides of the structure, which are connected to the plug plate by a mortise and tenon structure. The plug plate is placed to block the side wall formwork and the two ends of the side wall to prevent concrete from running out of the formwork and leaking the formwork, and then start pouring concrete; a maintenance window 10 is provided in the middle of the side wall formwork 6 for the operation of the vibrating mechanism 3.

[0041] The vibrating mechanism 3 is connected to the vertical bracket 13 by a moving block 14, which can slide up and down. The moving block 14 is connected to the first connecting rod 15, the end of the first connecting rod 15 is connected to the second connecting rod 16, and the end of the second connecting rod 16 is movably connected to the vibrating plate 17. A curing block 19 is arranged on one side of the vibrating plate 17 to rotate together. The curing block 19 is connected to the atomizing nozzle 20, thereby driving the atomizing nozzle 20 to work. A plurality of vibrating shafts 18 are arranged at the bottom of the vibrating plate 17. The vibrating shafts 18 can be inserted and pulled, and the materials can be poured and stirred in layers to be more fully stirred.

[0042] The opening and closing mechanism 4 has an upper and lower opening and closing clamp 21 at the end, which can rotate around a fixed body 24 and is fixedly connected to the short side of the side wall template 6. The bottom is provided with a telescopic column 23, which is connected to the vertical bracket 13, and a rolling rod 22 is located on the long side of the side wall template 6;

[0043] The automatic rail feeding mechanism 5 is arranged at the bottom of the bracket mechanism 1, and is fixedly connected to the vertical bracket 13 by the limit block 35. The lower end is connected to the first column 25 and the second column 26 in sequence to control the movement of the foot support 28. The end of the horizontal bracket 29 is connected to the moving block 27, which can be translated left and right to adjust the position. The inner side of the horizontal bracket 29 is provided with a push block 30, and the lower part is connected to the moving box 33. The inside of the moving box 33 is provided with a pulley 31, and the pulley 31 is gear-engaged with the guide rail 34. The lower part is provided with a clamping wheel 32, and the clamping wheel 32 is slidably connected to the guide rail 34 at the flange. This mechanism is provided with four, located at four corner points. When working, the foot support 28 is lifted by the first column 25 and the second column 26, and the pulley 31 is controlled to move on the guide rail 34 by setting a wireless remote control mechanism. When performing the next work surface operation, the retractable first column 25 and the second column 26 are used to put down the foot support 28, lift the moving box 33 and then lift the guide rail 34, and drive the guide rail 34 forward by rotating the clamping wheel 32 to perform the next repeated work.

[0044] Example 2

[0045] The present invention also provides a method for using a multifunctional trolley for an open-cut subway station main structure, comprising the following steps:

[0046] Transport the trolley to the construction site, lay the guide rails, and install the automatic rail delivery mechanism and guide rails at the bottom of the trolley;

[0047] Open the formwork mechanism and telescopically adjust the top plate working platform to move the formwork mechanism to the position where the steel bars are tied on the side wall of the foundation pit. Adjust the hydraulic mechanism of the trolley to further adjust the trolley to a suitable working position.

[0048] The guardrail of the formwork mechanism is raised, and the workers reach the side wall construction position by climbing the ladder, place the materials on the formwork mechanism, and start tying the steel bars at different heights;

[0049] After the reinforcement is tied, the side wall formwork is opened and closed to the appropriate position through the opening and closing mechanism, and the plugging plate is placed to block the side wall formwork and both ends of the side wall to prevent the concrete from running out of the formwork and leaking out of the formwork. Then, concrete pouring begins. During the pouring process, the working method of layered pouring and layered mixing is adopted to fully mix the concrete. Finally, it is cured by sprinkling water through the curing block.

[0050] After the maintenance is completed, the trolley is moved to lower the support legs to support the ground, the moving box drives the guide rail off the ground, and the clamping wheel moves to transport the guide rail along the construction direction. After the guide rail is transported to the right place, the support legs are raised and the moving box drives the guide rail to be laid on the ground, and the trolley moves on the guide rail through the pulley.

[0051] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A multifunctional trolley for the main structure of an open-cut subway station, characterized in that: It includes a bracket mechanism, a retractable top plate working platform is provided on the top of the bracket mechanism, the bracket mechanism is connected to the formwork mechanism on both sides relative to the station side wall through an opening and closing mechanism, and the formwork mechanism can be flipped open and closed under the drive of the opening and closing mechanism; a vibrating mechanism is provided on the bracket of the bracket mechanism close to the formwork mechanism, and the vibrating mechanism can vibrate the concrete pouring operation of the station side wall through the formwork mechanism; automatic rail delivery mechanisms are provided at both ends of the bottom of the bracket mechanism for the trolley to automatically deliver rails and move along the station construction direction.

2. A multifunctional trolley for the main structure of an open-cut subway station as claimed in claim 1, characterized in that: The support mechanism is provided with a plurality of vertical supports, a plurality of transverse supports are provided between the vertical supports close to the station side wall, and a ladder is provided between the plurality of transverse supports; a template mechanism is provided on the side of the transverse support opposite to the station side wall, an opening and closing mechanism is provided on the vertical support, and the opening and closing mechanism is connected to the template mechanism to drive the template mechanism to flip and open.

3. The multifunctional trolley for the main structure of an open-cut subway station as claimed in claim 1, characterized in that: The template mechanism comprises two side wall templates, and the two ends of the two side wall templates close to the bracket mechanism are connected to the opening and closing mechanism, and the opening and closing mechanism drives the two side wall templates to open and close.

4. The multifunctional trolley for the main structure of an open-cut subway station as claimed in claim 3, characterized in that: The formwork mechanism is provided with a protective fence, the bottom of which is hinged to the side wall formwork; a maintenance window is provided in the middle of the side wall formwork, and the maintenance window is used for a vibrating mechanism to pass through to vibrate the station side wall concrete pouring operation.

5. The multifunctional trolley for the main structure of an open-cut subway station as claimed in claim 2, characterized in that: The opening and closing mechanism comprises a rolling rod, which is arranged on a side of the side wall formwork close to the vertical bracket. Two opening and closing clamps are arranged at both ends of the rolling rod, and the two opening and closing clamps are respectively connected to the vertical brackets.

6. The multifunctional trolley for the main structure of an open-cut subway station as claimed in claim 5, characterized in that: The opening and closing pliers are provided with a telescopic column, which is connected to the vertical bracket. One end of the telescopic column away from the vertical bracket is provided with two pliers mouths, which are respectively connected to two side wall templates.

7. The multifunctional trolley for the main structure of an open-cut subway station as claimed in claim 2, characterized in that: The vibrating mechanism includes a moving block, which is slidably connected to a vertical bracket. A connecting rod mechanism is provided at one end of the moving block away from the vertical bracket. The end of the connecting rod mechanism is connected to a vibrating disk. A plurality of insertable and removable vibrating shafts are provided at the bottom of the vibrating disk. A health block is provided on the side of the vibrating disk, and the health block is connected to an atomizing nozzle.

8. The multifunctional trolley for the main structure of an open-cut subway station as claimed in claim 2, characterized in that: A hydraulic mechanism is provided at the bottom of the plurality of vertical supports, and a bottom horizontal support is connected between the hydraulic mechanisms close to the side walls of the station; The automatic rail delivery mechanism includes a foot support and a moving box; the foot support is telescopically arranged on a bottom hydraulic mechanism of a vertical support, a push block is arranged on the bottom transverse support, the push block abuts against the moving box, and the moving box is connected to the guide rail.

9. The multifunctional trolley for the main structure of an open-cut subway station as claimed in claim 8, characterized in that: A pulley is provided inside the moving box, and the pulley is connected to the guide rail; a plurality of clamping wheels are provided at the bottom of the moving box, and slide grooves are provided on both sides of the guide rail. The plurality of clamping wheels are arranged in the slide grooves on both sides of the guide rail to clamp the guide rail.

10. A method for using a multifunctional trolley for an open-cut subway station main structure as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Transport the trolley to the construction site, lay the guide rails, and install the automatic rail delivery mechanism and guide rails at the bottom of the trolley; Open the formwork mechanism and telescopically adjust the top plate working platform to move the formwork mechanism to the position where the steel bars are tied on the side wall of the foundation pit. Adjust the hydraulic mechanism of the trolley to further adjust the trolley to a suitable working position. The guardrail of the formwork mechanism is raised, and the workers reach the side wall construction position by climbing the ladder, place the materials on the formwork mechanism, and start tying the steel bars at different heights; After the reinforcement is tied, the side wall formwork is opened and closed to the appropriate position through the opening and closing mechanism, and the plugging plate is placed to block the side wall formwork and both ends of the side wall, and then the concrete pouring begins. During the pouring process, the concrete is poured and mixed in layers, and the concrete is fully mixed. Finally, it is cured by sprinkling water through the curing block; After the maintenance is completed, the trolley is moved to lower the support legs to support the ground, the moving box drives the guide rail off the ground, and the clamping wheel moves to transport the guide rail along the construction direction. After the guide rail is transported to the right place, the support legs are raised and the moving box drives the guide rail to be laid on the ground, and the trolley moves on the guide rail through the pulley.

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