CN104234723B - A kind of open trench tunnel square-section self-propelled mobile falsework chassis - Google Patents

Abstract

The invention discloses a self-propelled mobile formwork support trolley with a rectangular section of an open-cut tunnel, which comprises a door frame assembly, a horizontal device, a top formwork body beam, a top formwork and side forms, and the door frame assembly includes a door frame beam, a door Ground beams, gantry columns and longitudinal beams, the gantry beams are vertically fixed on the top of the gantry columns through the mast triangle, horizontal oil cylinders are fixedly installed at both ends of the gantry beams, connected with the horizontal device by hinged shafts, and the horizontal oil cylinders Both are equipped with lifting cylinders, the beam of the top mold frame is supported on the beam of the door frame by a jack, the top formwork is fixed on the beam of the top mold frame through the longitudinal beam of the top mold frame, and the side molds are longitudinally welded with hinge ears. There are two hinged lugs at both ends of the gantry beam, which are respectively connected to the hinged lugs on the corresponding through-beam through side mold cylinders and screw rods. The invention has low cost and high precision, and reduces hidden dangers of safety and quality.

Description

A self-propelled mobile formwork support trolley with rectangular section of open-cut tunnel

technical field

The invention relates to a trolley for tunnel construction, in particular to a self-propelled movable formwork support trolley with a rectangular section of an open-cut tunnel.

Background technique

In underground excavation tunnels, the trolley system with arched cross-section is generally used as the formwork support for the secondary lining structure, but this system makes full use of the arched structure to evenly bear the pressure of concrete pouring, and the rectangular cross-section is relatively vertical load and side load Both are much larger than the arched section, so the full hall support system is generally used in the rectangular section of the open-cut tunnel.

However, the full hall support system has the following disadvantages: (1) The installation and removal of the full hall support requires a lot of materials and labor, and the operation time is long, which is not conducive to saving cost and construction period; It is difficult to control the quality of the middle details, and there are great hidden dangers in safety and quality; (3) the formwork of the full hall support system is temporarily assembled, and the joints of the formwork are prone to leakage and misplacement, and the quality of the concrete after molding is not good; (4) the side walls are generally made of Pulling the screws in opposite directions is easy to form a seepage channel on the side wall of the tunnel structure, which is very unfavorable for tunnels with high waterproof requirements.

Contents of the invention

The object of the present invention is to provide a self-propelled mobile formwork support trolley with a rectangular section of an open-cut tunnel with high precision and cost saving, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A self-propelled mobile formwork support trolley with a rectangular section of an open-cut tunnel, including a door frame assembly, a horizontal device, a top formwork frame body beam, a top formwork and side forms, and the door frame assembly includes a door frame beam, a door frame ground beam, The gantry columns and longitudinal beams, the gantry beams are vertically fixed on the top of the gantry columns through the large triangle of the gantry, the vertical two gantry columns are fixed by diagonal braces, and the horizontal two gantry columns are fixed by gantry ground beams Fixed connection, horizontal oil cylinders are fixedly installed on both ends of the gantry beam, the two ends of the horizontal device are connected to the horizontal oil cylinder by hinge shafts, the lifting oil cylinder is installed on the horizontal oil cylinder, the longitudinal beam is installed on the lifting oil cylinder, and the cross beam of the top formwork body passes through The jack is installed on the beam of the gantry frame, and the longitudinal beam corresponding to the top and bottom of the jack is installed on the beam of the top formwork body above the jack. The templates are connected by connecting plate bolts, the two horizontal top templates are connected by connecting box bolts, the top template and side molds are connected by hinge shafts, the horizontal side molds are connected by bolts, and the longitudinal side molds are welded with multiple holes. There are hinged ears on the beam, and there are hinged ears on the column of the portal frame and the crossbeam of the top formwork body, which correspond to the hinged ears on the beam and are connected by screw rods. The two hinge ears are respectively connected with the hinge ears on the corresponding through beam through the side mold oil cylinder and the screw rod.

As a further solution of the present invention: there are five through beams welded on the longitudinal side forms.

Compared with the prior art, the beneficial effect of the present invention is that it does not require a large amount of materials and labor, saves a lot of time for erecting and dismantling the bracket, greatly reduces the cost and saves the construction period, and the trolley uses the handle to control the oil cylinder to position the steel The formwork has high precision, safe and reliable force, no mold running, mold expansion, etc., which greatly reduces safety and quality risks, and is more beneficial to tunnel structures with high waterproof requirements.

Description of drawings

Figure 1 is a front view of a self-propelled mobile formwork support trolley with a rectangular section of an open-cut tunnel.

In the figure: 1-gantry beam, 2-gantry ground beam, 3-gantry column, 4-longitudinal beam, 5-gantry triangle, 6-slant brace, 7-horizontal device, 8-horizontal oil cylinder, 9 -Top formwork longitudinal beam, 10-Lift cylinder, 11-Top formwork beam, 12-Jack, 13-Top template, 14-Side form, 15-Through beam, 16-Screw rod, 17-Side form cylinder .

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, in the embodiment of the present invention, a self-propelled movable formwork support trolley with a rectangular section of an open-cut tunnel includes a door frame assembly, a horizontal device 7, a top formwork frame body beam 11, a top formwork 13 and a side formwork 14 , the gantry assembly includes the gantry beam 1, the gantry ground beam 2, the gantry column 3 and the longitudinal beam 4, which has a rectangular section, the vertical load and the side load are much larger than the arched section, and can better withstand the pressure of concrete pouring; The gantry beam 1 is vertically fixed on the top of the gantry column 3 through the gantry big triangle 5, and the two vertical gantry columns 3 are fixed by diagonal braces 6, and the horizontal two gantry columns 3 are fixed by the gantry ground beam 2 connection, the stress point of the bracket is less, the hidden danger of safety and quality is greatly reduced, and the installation and removal of the bracket are more convenient, which greatly saves the cost and construction period; The two ends of the horizontal device 7 are connected with the horizontal cylinder 8 by hinged shafts. The lifting cylinder 10 is installed on the horizontal cylinder 8, and the longitudinal beam 4 is installed on the lifting cylinder 10. The steel formwork is positioned by the handle to control the cylinder, with high precision and safe force. Reliable, there are no situations such as mold running and mold expansion; the top formwork frame body beam 11 is supported on the door frame beam 1 by the jack 12, and the top formwork frame body beam 11 above the jack 12 is installed on the top formwork frame body beam 11 corresponding to the jack 12 up and down. Longitudinal beam 4, two vertical top formworks 13 are connected by connecting plate bolts, two horizontal top formworks 13 are connected by connecting box bolts, and top formwork 13 is fixed on top formwork frame body crossbeam 11 through top formwork frame body longitudinal beam 9 Above, the top formwork 13 is connected to the sideforms 14 through hinge shafts, the horizontal sideforms 14 are connected by bolts, and the longitudinal sideforms 14 are welded with a plurality of through beams 15, and the through beams 15 are provided with hinge ears. Both the gantry column 3 and the crossbeam 11 of the top formwork body are provided with hinged lugs, which correspond to the hinged lugs on the through beam 15 and are connected by screw rods. , are respectively connected to the hinge lugs on the corresponding through beam 15 through the side mold oil cylinder 17 and the screw mandrel, which is more beneficial to the tunnel structure with higher waterproof requirements.

The method for using a self-propelled mobile formwork support trolley with a rectangular section of an open-cut tunnel includes the following steps:

1. Formwork:

(1) After the self-propelled mobile formwork support trolley in the rectangular section of the open-cut tunnel is in place, first operate the handle of the manual reversing valve to raise the lifting cylinder, and adjust the formwork of the trolley to make it close to the predetermined height;

(2) Operate the handle of the manual reversing valve to move the horizontal cylinder in translation, and adjust the formwork of the trolley so that its centerline is aligned with the centerline of the lining;

(3) Operate the handle of the manual reversing valve to raise the lifting cylinder to the predetermined position, and tighten the lifting jack on the top of the trolley;

(4) Operate the handle of the manual reversing valve, adjust the side mold to the predetermined position, and install the side screw;

2. Demoulding: The order of demoulding is opposite to that of standing mold.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (2)

1. an open trench tunnel square-section self-propelled mobile falsework chassis, including door frame assembly, horizontal device (7), top Mould bases body crossbeam (11), top template (13) and side form (14), described door frame assembly includes door frame crossbeam (1), door frame grade beam (2), door frame column (3) and longeron (4), it is characterised in that described door frame crossbeam (1) is vertically fixed by the big triangle of door frame (5) On the top of door frame column (3), using diagonal brace (6) to fix between two longitudinal door frame columns (3), two horizontal door frames stand Post (3) uses the fixing connection of door frame grade beam (2), and door frame crossbeam (1) top, two ends is all installed with cross cylinder (8), described Horizontal device (7) two ends use jointed shaft to be connected with cross cylinder (8), and cross cylinder (8) is provided with hoist cylinder (10), rise Being provided with longeron (4) in fall oil cylinder (10), described backform support body crossbeam (11) is arranged on door frame crossbeam (1) by jack (12) On, and the upper installation of backform support body crossbeam (11) the most corresponding longeron (4) upper and lower with jack (12) of jack (12) top, described Top template (13) is fixed on backform support body crossbeam (11) by backform support body longeron (9), two longitudinal top templates (13) being connected by connecting plate bolt between, horizontal two top templates (13) use and connect the connection of box bolt, top template (13) it is connected by jointed shaft with side form (14), with bolts between horizontal side form (14), on longitudinal side form (14) Being welded with many logical beams (15), logical beam (15) is provided with hinge ear, and described door frame column (3) and backform support body crossbeam (11) are all provided with Hinged ear, is connected with the hinge ear one_to_one corresponding on logical beam (15) and by screw mandrel (16), and described door frame crossbeam (1) is respectively arranged at the two ends with Two hinge ears, are connected with the hinge ear on corresponding logical beam (15) by side form oil cylinder (17) and screw mandrel respectively.

Open trench tunnel square-section the most according to claim 1 self-propelled mobile falsework chassis, it is characterised in that institute The logical beam (15) stated on longitudinal side form (14) is welded with five.