Longitudinal needle beam slip form trolley for tunnel bottom plate

Abstract

The invention discloses a tunnel bottom plate longitudinal needle beam slip form trolley. The tunnel bottom plate longitudinal needle beam slip form trolley comprises a formwork assembly, a hopper, a chute, a needle beam, a hydraulic advancing device used for pushing the formwork assembly to move along the needle beam, a movable supporting leg, a front supporting leg, a rear supporting leg and two sets of anti-floating devices. The hydraulic advancing device is arranged so that the formwork assembly can walk in the length direction of the needle beam, after the formwork assembly walks to the limit, conversion of another working section of the needle beam and the other working section of an assembly of the needle beam is achieved through supporting of the movable supporting legs and the formwork assembly, and continuous pouring of adit bottom arch concrete is achieved within the length range of the needle beam. Calendaring and plastering can be performed in time before initial setting of the concrete, bubbles on the surface of the concrete are eliminated, and the apparent quality of the concrete is improved; the trolley can walk without independently arranging an external track, so that the labor and tool amortization cost is reduced; the bottom arch trolley is suitable for bottom arch lining construction of different section ranges with the same inner diameter.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel bottom plate longitudinal needle beam sliding formwork trolley. Background Art

[0002] At present, the main construction equipment used in the bottom arch lining construction of the hydraulic industry is: traditional needle beam bottom arch trolley and track hydraulic slipform trolley. The needle beam bottom arch is based on the successful experience in the top arch and side arch lining construction, combined with the characteristics of the tunnel bottom arch, and has realized the development of tunnel construction towards mechanization and industrialization. The emergence of the needle beam bottom arch trolley has improved the mechanization degree of tunnel bottom arch construction, which can effectively improve production efficiency, reduce costs, and adapt to the trend of industrialized production of tunnel engineering. With the continuous improvement of the quality, efficiency and appearance requirements of the project for concrete pouring. The needle beam bottom arch trolley is difficult to meet the requirements of large-scale and rapid construction. The track hydraulic slipform trolley technology came into being under this background, realizing the continuous pouring of concrete and improving the construction efficiency and quality. However, in the flat tunnel construction, there is still a situation where the cost of labor and tools is over-amortized.

[0003] At present, the main construction technologies used in tunnel bottom arch construction include: needle-beam bottom arch trolley and track-type bottom arch slipform trolley.

[0004] (1) Disadvantages of the needle beam bottom arch trolley: ① The construction strength is limited by the length of the formwork and the strength of the concrete. Even if the resource allocation is increased, the construction progress cannot be significantly improved; ② During the pouring process, it is difficult to completely expel all the bubbles in the concrete. After the formwork is removed, the apparent quality is poor. The reasons are: ① It is a fixed combination formwork trolley, which can only be poured bin by bin according to the length of the formwork. The concrete strength does not meet the demolding requirements, and the next working surface cannot be constructed, and the construction progress cannot be significantly improved. ② After the needle beam bottom arch formwork is installed, the bottom arch surface will be closed. During the pouring and vibration of the bottom arch, it is difficult to completely expel all the bubbles in the concrete. After the formwork is removed, the concrete has already finalized, and it is difficult to repair the surface quality.

[0005] (2) Disadvantages of the track-type bottom arch sliding formwork trolley: ① The sliding of the formwork during construction is greatly affected by the fluidity of the concrete and is easily obstructed; ② Along the sliding direction, when pouring the side walls on both sides of the bottom arch, it is difficult for the concrete to be piled up and formed; ③ In the flat tunnel sliding formwork construction, the sliding formwork trolley adopts a track travel system, and the labor and track steel amortization costs are high during the track laying construction. The reasons are as follows: ① During the casting project, the formwork walking system only relies on the hydraulic system and wire rope traction. The sliding of the formwork during the construction process is greatly affected by the fluidity of the concrete. When the fluidity is poor, the sliding is easily hindered; ② Affected by the friction between the formwork and the concrete, along the sliding direction, the width of the formwork is generally 2.5m-3m. When casting the side walls on both sides of the bottom arch, the accumulated concrete is easy to flow forward, and the concrete of the side walls on both sides is difficult to accumulate and form; ③ In the flat tunnel sliding formwork construction, a track walking system is used. It is necessary to manually drill holes in the bottom plate to install track dowels and supporting I-beams, and install track seats and tool tracks. When the bottom arch concrete is poured, the dowels and supporting I-beams will be buried in the poured concrete and cannot be reused. The supporting steel is depreciated and the construction cost is high.

[0006] Therefore, it is necessary to develop a tunnel floor longitudinal needle beam sliding formwork trolley to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to design a tunnel floor longitudinal needle beam sliding formwork trolley in order to solve the above problems.

[0008] The present invention achieves the above-mentioned purpose through the following technical solutions: A tunnel floor longitudinal needle beam sliding formwork trolley, comprising: The template assembly includes a bottom mold, two small side molds, a door frame assembly, a plurality of first travel cams, and a plurality of tracks. The door frame assembly is formed into a rectangular frame structure. The bottom mold is installed at the bottom of the door frame assembly. The two small side molds are respectively connected to both sides of the bottom mold. The plurality of first travel cams are divided into two groups and are respectively placed at the top and bottom of the door frame assembly. Hopper; the hopper is mounted on the top of the portal assembly; Chute; the lower end of the hopper is connected to the upper end of the chute, and the lower end of the chute is connected to the feed port of the small side mold; Needle beam; the gantry assembly is sleeved on the outside of the needle beam, and the multiple tracks are divided into two groups and respectively placed on the top and bottom of the needle beam, the first travel cam located at the top is slidably matched with the track located at the top, and the first travel cam located at the bottom is slidably matched with the track located at the bottom; A hydraulic travel device for pushing the template assembly to move along the needle beam; one part of the hydraulic travel device is connected to the track, and the other part is connected to the door frame assembly; Movable supporting legs; the upper part of the movable supporting legs is formed into a rectangular frame structure, the upper part of the movable supporting legs is sleeved on the outside of the needle beam, and a plurality of second travel cams are divided into two groups and are respectively placed at the top and bottom of the upper part of the movable supporting legs, the second travel cam at the top is slidably matched with the track at the top, and the second travel cam at the bottom is slidably matched with the track at the bottom; a supporting leg oil cylinder is provided at the bottom of the movable supporting legs, the supporting leg oil cylinder is installed vertically, and a supporting foot is installed on the lower output end of the supporting leg oil cylinder; Front outrigger; Rear outriggers: The front outriggers and the rear outriggers are respectively installed under the two ends of the needle beam and supported on the ground when the template assembly is working; Two sets of anti-floating devices; the anti-floating devices include anti-floating brackets and top-supporting mechanisms. The anti-floating brackets of the two sets of anti-floating devices are respectively installed above the two ends of the needle beam, and the top-supporting mechanism is installed above the anti-floating brackets. The top of the top-supporting mechanism is connected to the top of the tunnel.

[0009] Furthermore, the tunnel floor longitudinal needle beam slipform trolley also includes a first electric hoist, which is installed at the front end of the needle beam, and the first steel wire rope action end of the first electric hoist is connected to the gantry assembly.

[0010] Furthermore, two horizontal supports are arranged on two opposite side walls of each anti-floating support, the two horizontal supports are arranged on the same horizontal line, and the ends of the two horizontal supports are respectively connected to the two sides of the tunnel.

[0011] Furthermore, the tunnel floor longitudinal needle beam slipform trolley also includes a second electric hoist and a second steel wire rope. The second electric hoist is installed at the front end of the needle beam, and the anchor point is placed on the ground in front of the trolley. The second electric hoist is connected to the anchor point through the second steel wire rope.

[0012] Furthermore, ladders are provided below both ends of the needle beam.

[0013] Furthermore, the gantry assembly includes multiple gantries and two longitudinal beams. The gantry is formed in a U shape. The multiple gantries are arranged parallel to each other. The lower first ends of the multiple gantries are connected by a longitudinal beam, and the lower second ends of the multiple gantries are connected by another longitudinal beam. The two longitudinal beams are parallel to each other. A string beam is connected below each gantry and located at the lower part of the longitudinal beam. The string beam is parallel to the gantry. A plurality of platform columns are arranged at the lower end of each string beam. The lower ends of the plurality of platform columns and both ends of the string beam are connected to the inner side of the bottom mold.

[0014] Furthermore, a curved walkway plate is provided at one end of the door frame assembly.

[0015] Furthermore, the template assembly also includes a side mold cylinder and a screw jack. The first end of the small side mold is hinged to the bottom mold, the fixed end of the side mold cylinder is hinged to the first end of the chord beam, the actuating end of the side mold cylinder is hinged to the second end of the small side mold, the first end of the screw jack is hinged to the side wall of the door frame, and the second end of the screw jack is hinged to the second end of the small side mold.

[0016] Furthermore, the hydraulic travel device includes a travel articulated seat, a travel oil cylinder, a first locking oil cylinder, a second locking oil cylinder, a first locking frame, a first locking tongue, a first tooth plate, a second locking frame, a second locking tongue, and a second tooth plate. The upper end of the travel articulated seat is fixedly installed on the inner side of the upper end of the door frame assembly, the first locking frame and the second locking frame are slidably placed on the track, the first tooth plate is installed on the first locking frame and placed under the track, the second tooth plate is installed on the second locking frame and placed under the track, the lower end of the travel articulated seat is hinged to the first end of the second locking frame, the middle part of the second locking tongue is hinged to the second locking frame, and the first end of the second locking tongue is placed The cam is connected to the second toothed plate and is used to cooperate with the second toothed plate to clamp the rail. The second end of the second locking tongue is hinged to the output end of the second locking cylinder. The fixed end of the second locking cylinder is hinged to the inner side of the second end of the second locking frame. The second end of the second locking frame is connected to the fixed end of the traveling cylinder. The active end of the traveling cylinder is hinged to the first end of the first locking frame. The fixed end of the first locking cylinder is hinged to the inner side of the first end of the first locking frame. The second end of the first locking cylinder is hinged to the first end of the first locking tongue. The middle part of the first locking tongue is hinged to the first locking frame. The second end of the first locking tongue is placed above the first toothed plate and is used to cooperate with the first toothed plate to clamp the rail.

[0017] Furthermore, an automatic cable retracting and releasing device is provided at the upper end of the movable leg.

[0018] The beneficial effects of the present invention are: 1. The template assembly can be moved along the length of the needle beam by setting a hydraulic travel device. After the template assembly moves to the limit, the needle beam and its components can be converted to another working section through the support of the movable legs and the template assembly. The continuous pouring of the flat hole bottom arch concrete can be achieved within the length of the needle beam, and the surface can be smoothed and plastered in time before the initial setting of the concrete, so as to eliminate bubbles on the concrete surface and improve the surface quality of the concrete. 2. The trolley does not need to be equipped with a separate external track, which reduces the amortization cost of labor and tools; 3. The bottom arch trolley is suitable for the bottom arch lining construction with the same inner diameter and different cross-section ranges; 4. The added anti-floating device can prevent the trolley from floating while realizing rapid pouring of the bottom arch. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the present invention; Figure 2 It is an enlarged schematic diagram of the first part of the present invention; Figure 3 It is an enlarged schematic diagram of the second part of the present invention; Figure 4 It is a structural schematic diagram of the hydraulic travel device in the present invention; Figure 5 It is a left side view of the present invention.

[0020] In the figure, 1, bottom mold; 2, small side mold; 3, door frame; 4, needle beam; 5, movable leg; 6, front leg; 7, rear leg; 8, hydraulic travel device; 80, travel articulated seat; 81, travel cylinder; 82, first locking cylinder; 83, second locking cylinder; 84, first locking frame; 85, first locking tongue; 86, first tooth plate; 87, second locking frame; 88, second locking tongue; 89, second tooth plate; 9. Anti-floating support; 10. Horizontal support; 11. Top support mechanism; 12. Hopper; 13. Automatic cable retracting and releasing device; 14. Second electric hoist; 15. Second steel wire rope; 16. Ladder; 17. First electric hoist; 18. Curved walkway board; 19. Stand column; 20. String beam; 21. Longitudinal beam; 22. Side mold cylinder; 23. Screw jack; 24. Chute; 25. Track; and first walking cam. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1-5 As shown, a tunnel bottom plate longitudinal needle beam sliding formwork trolley comprises: The template assembly includes a bottom mold 1, two small side molds 2, a door frame assembly, four first travel cams, and four tracks 25. The door frame assembly is formed into a rectangular parallelepiped frame structure. The bottom mold 1 is installed at the bottom of the door frame assembly. The two small side molds 2 are respectively connected to both sides of the bottom mold 1. The four first travel cams are divided into two groups and are respectively placed at the top and bottom of the door frame assembly. Hopper 12; Hopper 12 is mounted on the top of the portal assembly; The chute 24; the lower end of the hopper 12 is connected to the upper end of the chute 24, and the lower end of the chute 24 is connected to the feed port of the small side mold 2; The needle beam 4; the gantry assembly is sleeved on the outside of the needle beam 4, and the four tracks 25 are divided into two groups and are respectively placed at the top and bottom of the needle beam 4, the first travel cam at the top is slidably matched with the track 25 at the top, and the first travel cam at the bottom is slidably matched with the track 25 at the bottom; A hydraulic travel device 8 for pushing the template assembly to move along the needle beam 4; a part of the hydraulic travel device 8 is connected to the track 25, and another part is connected to the door frame assembly; Movable supporting leg 5; the upper part of the movable supporting leg 5 is formed into a rectangular frame structure, the upper part of the movable supporting leg 5 is sleeved on the outside of the needle beam 4, and a plurality of second travel cams are divided into two groups and are respectively placed at the top and bottom of the upper part of the movable supporting leg 5, the second travel cam at the top is slidably matched with the track 25 at the top, and the second travel cam at the bottom is slidably matched with the track 25 at the bottom; a supporting leg oil cylinder is provided at the bottom of the movable supporting leg 5, the supporting leg oil cylinder is vertically installed, and a supporting foot is installed on the lower output end of the supporting leg oil cylinder; Front outrigger 6; The front leg 6 and the rear leg 7 are respectively installed under the two ends of the needle beam 4 and supported on the ground when the template assembly is working; Two sets of anti-floating devices; the anti-floating devices include anti-floating brackets 9 and a top-supporting mechanism 11. The anti-floating brackets 9 of the two sets of anti-floating devices are respectively installed above the two ends of the needle beam 4, and the top-supporting mechanism 11 is installed above the anti-floating brackets 9. The top of the top-supporting mechanism 11 is connected to the top of the tunnel.

[0029] like Figure 1 and 3 As shown, the tunnel floor longitudinal needle beam slipform trolley also includes a first electric hoist 17, which is installed at the front end of the needle beam 4, and the first steel wire rope action end of the first electric hoist 17 is connected to the gantry assembly.

[0030] like Figure 5 As shown, two horizontal supports 10 are arranged on two opposite side walls of each anti-floating support, the two horizontal supports 10 are arranged on the same horizontal line, and the ends of the two horizontal supports are respectively connected to the two sides of the tunnel.

[0031] like Figure 1 and 3 As shown, the tunnel floor longitudinal needle beam slipform trolley also includes a second electric hoist 14 and a second steel wire rope 15. The second electric hoist 14 is installed at the front end of the needle beam 4, and the anchor point is placed on the ground in front of the trolley. The second electric hoist 14 is connected to the anchor point through the second steel wire rope 15.

[0032] like Figure 1 and 3 As shown, ladders 16 are provided below both ends of the needle beam 4.

[0033] like Figure 1 and 2As shown in Figure 5, the gantry assembly includes multiple gantries 3 and two longitudinal beams 21. The gantry 3 is formed in a U shape. The multiple gantries 3 are arranged parallel to each other. The lower first ends of the multiple gantries 3 are connected by a longitudinal beam 21, and the lower second ends of the multiple gantries 3 are connected by another longitudinal beam 21. The two longitudinal beams 21 are parallel to each other. A chord beam 20 is connected below each gantry 3 and located at the lower part of the longitudinal beam 21. The chord beam 20 is parallel to the gantry 3. A plurality of stand columns 19 are arranged at the lower end of each chord beam 20. The lower ends of the plurality of stand columns 19 and both ends of the chord beam 20 are connected to the inner side of the bottom mold.

[0034] like Figure 2 As shown, a curved walkway plate 18 is provided at one end of the door frame assembly.

[0035] like Figure 5 As shown, the template assembly also includes a side mold cylinder 22 and a screw jack 23. The first end of the small side mold 2 is hinged to the bottom mold 1, the fixed end of the side mold cylinder 22 is hinged to the first end of the chord beam 20, the actuating end of the side mold cylinder 22 is hinged to the second end of the small side mold 2, the first end of the screw jack 23 is hinged to the side wall of the door frame, and the second end of the screw jack 23 is hinged to the second end of the small side mold 2.

[0036] like Figure 4As shown, the hydraulic travel device 8 includes a travel articulated seat 80, a travel cylinder 81, a first locking cylinder 82, a second locking cylinder 83, a first locking frame 84, a first locking tongue 85, a first tooth plate 86, a second locking frame 87, a second locking tongue 88, and a second tooth plate 89. The upper end of the travel articulated seat 80 is fixedly mounted on the inner side of the upper end of the door frame assembly, the first locking frame 84 and the second locking frame 87 are slidably placed on the track 25, the first tooth plate 86 is mounted on the first locking frame 84 and placed below the track 25, the second tooth plate 89 is mounted on the second locking frame 87 and placed below the track 25, the lower end of the travel articulated seat 80 is hinged to the first end of the second locking frame 87, the middle part of the second locking tongue 88 is hinged to the second locking frame 87, and the first The second end of the second locking tongue 88 is hinged to the output end of the second locking cylinder 83, the fixed end of the second locking cylinder 83 is hinged to the inner side of the second end of the second locking frame 87, the second end of the second locking frame 87 is connected to the fixed end of the traveling cylinder 81, the active end of the traveling cylinder 81 is hinged to the first end of the first locking frame 84, the fixed end of the first locking cylinder 82 is hinged to the inner side of the first end of the first locking frame 84, the second end of the first locking cylinder 82 is hinged to the first end of the first locking tongue 85, the middle part of the first locking tongue 85 is hinged to the first locking frame 84, the second end of the first locking tongue 85 is placed above the first toothed plate 86, and is used to cooperate with the first toothed plate 86 to clamp the rail 25. When the hydraulic travel device is working, first, the first locking cylinder 82 pushes the first locking tongue 85 to rotate, and the second end of the first locking tongue 85 moves downward to cooperate with the first tooth plate 86 to clamp the track 25. After the travel cylinder 81 works, it pushes the second locking frame 87, the travel articulated seat 80 and the template assembly to move forward. When it moves to the right position, the second locking cylinder 83 pushes the second locking tongue 88 to rotate, and the first end of the second locking tongue 88 moves downward to cooperate with the second tooth plate 89 to clamp the track 25. The first locking cylinder 82 pulls back the first locking tongue 85, and the first locking tongue 85 rotates. The second end of the first locking tongue 85 relaxes the clamping of the track 25, and the travel cylinder 81 pulls back, so that the first locking frame 84 moves forward along the track, and the template assembly moves forward on the needle beam 4 by reciprocating. When the template assembly and the movable support leg 5 support the entire sliding formwork trolley and the needle beam needs to be moved, a similar principle is also used to complete it.

[0037] After the travel oil cylinder 81 works, it pushes the second locking frame 87, the travel articulated seat 80 and the template assembly forward. like Figure 1 and 3 As shown, an automatic cable retracting device 13 is provided at the upper end of the movable leg 5 .

[0038] In some embodiments: In the template assembly: the stand column 19 and the string beam 20 form the skeleton of the bottom template, which are connected to the bottom template as a whole by bolts. The small side templates on both sides are hinged with the bottom template to form a template system. During the construction process, the small side templates 2 on both sides are adjusted by adjusting the side template cylinder 22 and the screw jack 23; in addition, the adjacent portal columns are also connected by a scissor frame to form a portal frame. The longitudinal beam and the string beam are connected as a whole by bolts. The four first walking cams () are divided into two groups, two in each group, and are arranged on the inner side of the upper crossbeam of the portal frame and on the string beam respectively.

[0039] Needle beam assembly: It is composed of main beam (pulley beam), horizontal tie rod, vertical rod, diagonal tie rod, scissor frame and rails and other components connected by welding and bolts (this is the existing technology and will not be described here). The needle beam is first assembled into three sections of front, middle and rear sheet beams in units, and then hoisted. The rails are longitudinally connected to the main beam (pulley beam) by welding to form a whole, which serves as the travel track of the supporting wheel. The hydraulic travel rails are fixed to the middle position of the top and bottom of the needle beam by steel pads and bolts.

[0040] Support system (this is the prior art and will not be described in detail here): It is composed of front legs 6, rear legs 7, and movable legs 5. The front and rear legs include: legs, slides, transverse connecting frames, limit mechanisms, translation trolleys, and supports. The legs are fixed to the main beams on both sides of the needle beam end by bolts, and the legs are fixed by transverse connecting frames. Slides are arranged inside the legs to adjust the vertical displacement of the needle beam. A connecting steel plate and a translation trolley are set at the bottom of the slide for fixing, and a translation cylinder is set between the translation trolleys. The translation trolley and the support are connected by mortise and tenon joints, and a limit mechanism is installed on the support with a pin to fix the translation trolley. The front leg support is a rectangular pad, and the rear leg support is an arc pad (placed on the surface of the finished bottom arch). The movable leg includes: a movable leg jack, a support, and a door frame. The movable leg is connected to the needle beam through the door frame, and upper and lower walking wheels are arranged between the door frame and the needle beam. The support is composed of a connecting plate and a rib plate, which is connected to the support leg through a pin, and the inclination of the bottom can be adjusted around the pin.

[0041] Hydraulic jack system (this is the existing technology and will not be elaborated here): It is composed of the hydraulic system at the front end of the trolley (six-way valve), the hydraulic system at the rear end of the trolley (six-way valve), the movable leg hydraulic system (four-way valve) and the template and travel hydraulic system (nine-way valve). The front and rear hydraulic devices are installed at both ends of the needle beam, including: the lifting cylinder installed on the slide, the translation cylinder between the translation trolleys, the anti-floating cylinder of the anti-floating top rod, and the lateral anti-displacement cylinder of the horizontal support. The movable leg hydraulic system is mainly the movable leg cylinder installed in the leg, and the control system is arranged on the top platform of the movable leg gantry. The template and travel hydraulic system includes: the side mold cylinder that controls the small side molds on both sides, and the locking cylinder and travel cylinder arranged in the middle of the top of the gantry for controlling the template and gantry system. The cylinders are connected by pins, and the control system is arranged on the top platform of the template gantry.

[0042] Material distribution system: It consists of a hopper and a chute. The hopper is placed in the middle of the top of the template gantry, and the concrete is transported to the hopper through a pump pipe. The chute is tilted and overlapped on the gantry to evenly transport the concrete in the hopper to the feed ports of the small templates on both sides.

[0043] Anti-floating device: It is composed of an anti-floating bracket 9, a horizontal bracket 10 and a top support mechanism 11, and the components are connected by bolts. The anti-floating device is set at the front and rear ends of the needle beam. An anti-floating cylinder is installed at the center of the top support mechanism. The bottom of the cylinder is fixed at the middle intersection of the horizontal scissors frame, and the top is connected to the anti-floating top rod through a connecting steel plate and bolts. A lateral anti-displacement cylinder is installed at the center of the horizontal bracket. The bottom of the cylinder is fixed at the middle intersection of the vertical scissors frame, and the top is connected to the horizontal top rod through a connecting steel plate and bolts.

[0044] Other auxiliary devices: The automatic cable retracting device is installed on the top of the gantry of the movable leg to assist in the traction of the formwork system and the walking of the movable leg. The second electric hoist, anchor point, and second wire rope together constitute the anchoring system of the front end of the trolley needle beam. The ladder is welded to the ends of both sides of the needle beam for construction workers to enter the passage inside the needle beam. The working platform (steel plate mesh) is arranged on the top of the formwork gantry, the top of the movable leg gantry, and the inside of the needle beam. The curved walkway board is bolted to the rear side of the formwork, which is a work platform for construction workers to smooth and plaster the surface.

[0045] Description of working principle: Needle beam slipform trolley; as the pouring proceeds, the hydraulic walking device is started, and the locking hydraulic device cooperates with the automatic cable retracting device to make the formwork slide forward, keeping the sliding speed consistent with the pouring speed. For the concrete surface after the formwork slides away, the construction workers will promptly perform calendering and plastering on the curved walkway board. After the needle beam slipform trolley moves to the construction area, operate the front and rear hydraulic devices of the needle beam, adjust the needle beam to align it with the center of the tunnel, and adjust the height to the predetermined position. Then adjust the template (bottom template, small side template) to the tunnel lining contour. Then operate the front and rear hydraulic devices to make the front and rear anti-floating mechanisms and the anti-displacement horizontal brackets on both sides firmly supported, and at the same time measure and check the template position and the needle beam axis. After verification, turn off the hydraulic control system. Install the side mold cylinder and screw jack, and fix the trolley to the front anchor point through the second electric hoist and the second wire rope, so that the trolley's mold erection work is completed. As the pouring proceeds, start the hydraulic travel device, the automatic cable retracting device, and the first electric hoist assist to make the template assembly slide forward, keep the sliding and pouring speeds consistent, and the construction personnel will promptly perform calendering and plastering on the curved walkway board for the concrete surface after the template slides off.

[0046] As the pouring progresses, when the needle beam needs to be moved forward, the locking mechanism in the hydraulic travel device is activated to fix the formwork, and at the same time, the leg cylinder of the movable leg is activated to lower the movable leg to form two support points of the needle beam with the formwork. Then the front and rear hydraulic devices are activated to lift the front and rear supports, retract the anti-floating mechanism and the anti-displacement brackets on both sides, and the travel cylinder of the hydraulic travel device is activated to push the needle beam forward to the specified position, and the front and rear supports are lowered to support the formwork, and then the second wire rope is used to fix the needle beam to the front anchor point, and the above formwork adjustment, installation and pouring operations are repeated.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tunnel floor longitudinal needle beam sliding formwork trolley, characterized in that: include: Template assembly; The template assembly comprises a bottom mold (1), two small side molds (2), a door frame assembly, a plurality of first travel cams (26), and a plurality of tracks (25); the door frame assembly is formed into a rectangular parallelepiped frame structure; the bottom mold (1) is mounted at the bottom of the door frame assembly; the two small side molds (2) are respectively connected to both sides of the bottom mold (1); and the plurality of first travel cams (26) are divided into two groups and are respectively placed at the top and bottom of the door frame assembly; A hopper (12); the hopper (12) is mounted on the top of the gantry assembly; The chute (24); the lower end of the hopper (12) is connected to the upper end of the chute (24), and the lower end of the chute (24) is connected to the feed port of the small side mold (2); The needle beam (4) is provided with a door frame assembly mounted on the outside of the needle beam (4); the plurality of tracks (25) are divided into two groups and are respectively arranged at the top and the bottom of the needle beam (4); the first travel cam (26) at the top is slidably matched with the track (25) at the top, and the first travel cam (26) at the bottom is slidably matched with the track (25) at the bottom; A hydraulic travel device (8) for pushing the template assembly to move along the needle beam (4); a portion of the hydraulic travel device (8) is connected to the track (25), and another portion is connected to the portal assembly; A movable leg (5); the upper portion of the movable leg (5) is formed into a rectangular frame structure, the upper portion of the movable leg (5) is sleeved on the outside of the needle beam (4), a plurality of second travel cams are divided into two groups and are respectively arranged at the top and bottom of the upper portion of the movable leg (5), the second travel cam located at the top is slidably matched with the track (25) located at the top, and the second travel cam located at the bottom is slidably matched with the track (25) located at the bottom; a leg oil cylinder is arranged at the bottom of the movable leg (5), the leg oil cylinder is installed vertically, and a support foot is installed at the lower output end of the leg oil cylinder; Front legs (6); The front supporting legs (6) and the rear supporting legs (7) are respectively installed below the two ends of the needle beam (4) and supported on the ground when the template assembly is working; Two sets of anti-floating devices; the anti-floating devices include anti-floating brackets (9) and a top support mechanism (11); the anti-floating brackets (9) of the two sets of anti-floating devices are respectively installed above the two ends of the needle beam (4); the top support mechanism (11) is installed above the anti-floating brackets (9); and the top of the top support mechanism (11) is connected to the top of the tunnel.

2. A tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: The tunnel floor longitudinal needle beam slipform trolley further comprises a first electric hoist (17), the first electric hoist (17) being mounted at the front end of the needle beam (4), and the first steel wire rope action end of the first electric hoist (17) being connected to the portal assembly.

3. The tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: Two horizontal supports (10) are arranged on two opposite side walls of each anti-floating support, the two horizontal supports (10) are arranged on the same horizontal line, and the ends of the two horizontal supports are respectively connected to two sides of the tunnel.

4. The tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: The tunnel floor longitudinal needle beam slipform trolley further comprises a second electric hoist (14) and a second steel wire rope (15); the second electric hoist (14) is mounted at the front end of the needle beam (4), the anchor point is placed on the ground in front of the trolley, and the second electric hoist (14) is connected to the anchor point via the second steel wire rope (15).

5. The tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: Ladders (16) are provided below both ends of the needle beam (4).

6. The tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: The door frame assembly comprises a plurality of door frames (3) and two longitudinal beams (21); the door frames (3) are formed into a U shape; the plurality of door frames (3) are arranged parallel to each other; the first ends of the lower parts of the plurality of door frames (3) are connected by a longitudinal beam (21); the second ends of the lower parts of the plurality of door frames (3) are connected by another longitudinal beam (21); the two longitudinal beams (21) are parallel to each other; a string beam (20) is connected below each door frame (3) and located below the longitudinal beam (21); the string beam (20) is parallel to the door frame (3); a plurality of stand columns (19) are arranged at the lower end of each string beam (20); the lower ends of the plurality of stand columns (19) and the two ends of the string beam (20) are connected to the inner side of the bottom mold.

7. The tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: An arc-shaped walkway plate (18) is arranged at one end of the door frame assembly.

8. The tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: The template assembly also includes a side mold cylinder (22) and a screw jack (23); the first end of the small side mold (2) is hinged to the bottom mold (1); the fixed end of the side mold cylinder (22) is hinged to the first end of the string beam (20); the actuating end of the side mold cylinder (22) is hinged to the second end of the small side mold (2); the first end of the screw jack (23) is hinged to the side wall of the door frame; and the second end of the screw jack (23) is hinged to the second end of the small side mold (2).

9. The tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: The hydraulic travel device (8) comprises a travel articulated seat (80), a travel oil cylinder (81), a first locking oil cylinder (82), a second locking oil cylinder (83), a first locking frame (84), a first locking tongue (85), a first tooth plate (86), a second locking frame (87), a second locking tongue (88), and a second tooth plate (89). The upper end of the travel articulated seat (80) is fixedly mounted on the inner side of the upper end of the door frame assembly. The first locking frame (84), the second locking frame (85), the second locking tongue (88), and the second tooth plate (89) are The locking frame (87) is slidably placed on the track (25), the first tooth plate (86) is mounted on the first locking frame (84) and is placed below the track (25), the second tooth plate (89) is mounted on the second locking frame (87) and is placed below the track (25), the lower end of the travel hinge seat (80) is hinged to the first end of the second locking frame (87), the middle part of the second locking tongue (88) is hinged to the second locking frame (87), and the second locking tongue (88) is hinged to the second locking frame (87). ) is placed above the second tooth plate (89) and is used to cooperate with the second tooth plate (89) to clamp the rail (25), the second end of the second locking tongue (88) is hinged to the output end of the second locking cylinder (83), the fixed end of the second locking cylinder (83) is hinged to the inner side of the second end of the second locking frame (87), the second end of the second locking frame (87) is connected to the fixed end of the travel cylinder (81), and the active end of the travel cylinder (81) is connected to the first locking frame (87). The first end of the tightening frame (84) is hinged, the fixed end of the first locking oil cylinder (82) is hinged to the inner side of the first end of the first locking frame (84), the second end of the first locking oil cylinder (82) is hinged to the first end of the first locking tongue (85), the middle part of the first locking tongue (85) is hinged to the first locking frame (84), and the second end of the first locking tongue (85) is placed above the first tooth plate (86) and is used to cooperate with the first tooth plate (86) to clamp the rail (25).

10. The tunnel floor longitudinal needle beam sliding formwork trolley according to claim 1, characterized in that: An automatic cable retracting device (13) is provided at the upper end of the movable supporting leg (5).

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