Movable construction device for cantilever end of steel truss girder bridge

Abstract

The utility model provides a steel truss girder overhanging end movable construction device which comprises a bridge floor moving mechanism, a connecting channel and a lower operation platform, and the lower operation platform is arranged below a steel truss girder bridge overhanging end in a suspended mode. The bridge floor moving mechanism is arranged above the overhanging end of the steel truss girder bridge and can move back and forth on the bridge floor of the overhanging end of the steel truss girder bridge in the mileage direction. The lower operating platform is connected with the bridge floor moving mechanism through a connecting channel; the device is stable in structure, simple to manufacture and low in cost, can solve the problems of high construction risk and high cost of a method for climbing the overhanging end of the river-crossing steel truss bridge or erecting a scaffold, is convenient for constructors to operate at the lower part of the overhanging section, and is convenient and safe to construct.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bridge engineering cantilever end lower part construction technical field, concretely relates to a steel truss beam cantilever end movable construction device. BACKGROUND

[0002] In the current bridge engineering construction, the edge and the suspension operation account for a significant proportion, especially for the cantilever end lower part stiffening rib welding, drainage pipe laying and site surface paint coating operation links contained in the steel truss beam bridge construction, the complexity and safety requirements of high-altitude operation environment need to be considered, and setting up an auxiliary construction platform can provide sufficient operating space for professional operators to complete the operation content.

[0003] At present, the bridge outer side auxiliary construction platform mostly adopts the methods such as erecting a scaffold, a climbing truck flat lifting or setting up a specific structure operation platform at the operation position to assist operation. But in the actual engineering application, these methods all have certain limitations, such as crossing a river, the scaffold is difficult to erect, the bridge vertical height is higher, the arm spread length of the curved arm truck is limited, etc. In addition, the existing operation platform is mostly suitable for the construction process of various crash barrier types on the outer side of the cantilever end bridge deck, and is not suitable for the cantilever end lower part, and the structure is often relatively complex, and the installation and removal cost is higher. Therefore, for the construction process of the cantilever end lower part of the steel truss beam bridge, developing an operation platform that is convenient to install and has strong applicability becomes the current problem to be solved. SUMMARY

[0004] The utility model discloses a steel truss beam cantilever end movable construction device, solve the defect that the bridge outer side auxiliary construction platform set up when the existing steel truss beam cantilever end constructs, and structure is complex, and the installation and removal cost are high.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that is:

[0006] The utility model discloses a steel truss beam cantilever end movable construction device, including bridge deck moving mechanism, connecting channel and lower operation platform, wherein:

[0007] The lower operation platform is suspended below the cantilever end of the steel truss beam bridge, the bridge deck moving mechanism is placed above the cantilever end of the steel truss beam bridge, and can move back and forth on the bridge deck of the cantilever end of the steel truss beam bridge along the mileage direction;

[0008] The lower operation platform and the bridge deck moving mechanism are connected through the connecting channel.

[0009] Preferably, the bridge deck moving mechanism includes an upper rectangular steel frame, the lower surface of the upper rectangular steel frame is provided with a pair of longitudinal movement pulleys along the bridge mileage direction, and the upper surface of the upper rectangular steel frame is provided with a counterweight on the side away from the connecting channel.

[0010] Preferably, the upper surface of the upper rectangular steel frame is provided with a pair of lifting lugs arranged in the direction of the bridge mileage.

[0011] Preferably, the upper surface of the upper rectangular steel frame is provided with an auxiliary braking device for braking the longitudinal movement pulley.

[0012] Preferably, the auxiliary braking device comprises a square steel plate with a round hole, and a plug rod is arranged in the round hole for braking the longitudinal movement pulley.

[0013] Preferably, the connecting channel comprises an inner frame and an outer frame, wherein:

[0014] The upper end of the inner frame is welded to the lower surface of the upper rectangular steel frame, and the lower end of the inner frame is fixedly connected to the upper surface of the lower operation platform by welding;

[0015] One end of the outer frame is welded to the upper surface of the upper rectangular steel frame, and the other end is fixedly connected to the upper surface of the lower operation platform by welding, forming an entrance protection structure into the lower operation platform.

[0016] Preferably, a pair of transverse movement pulleys are arranged on the inner frame in the direction of the bridge mileage, and the transverse movement pulleys are in contact with the side wall of the cantilevered end of the steel truss girder.

[0017] Preferably, the inner frame comprises two parallel arranged I-beams, and the upper ends of the two I-beams are welded to the lower surface of the upper rectangular steel frame.

[0018] The two I-beams are fixedly connected by a plurality of first connecting rods uniformly distributed along the axis of the I-beam, so as to form a ladder into the lower operation platform from the bridge deck movement mechanism.

[0019] One transverse limiting pulley is fixedly arranged on each I-beam, and the transverse limiting pulley is in contact with the side wall of the cantilevered end of the steel truss girder.

[0020] Preferably, the outer frame comprises two sub-frames, and the two sub-frames are arranged in parallel in the direction of the bridge mileage, and the upper ends of the two sub-frames are connected by a plurality of second connecting rods uniformly distributed along the axis of the sub-frame; the lower ends of the two sub-frames are fixedly closed by a steel plate.

[0021] Each sub-frame comprises a long steel pipe and a short steel pipe, wherein one end of the short steel pipe is fixed to the upper surface of the upper rectangular steel frame, and the other end is connected to the long steel pipe by a third connecting rod.

[0022] A plurality of fourth connecting rods are arranged along the axis of the steel pipe between the short steel pipe and the long steel pipe.

[0023] Preferably, the lower operation platform comprises a lower rectangular steel frame, and an upper surface of the lower rectangular steel frame is paved with a bottom plate;

[0024] The upper surface of the lower matrix steel frame is provided with a fence, and the fence is provided with an entrance opening, which is communicated with the entrance protection structure on the connecting channel

[0025] Compared with the prior art, the movable construction device for the steel truss bridge cantilever end has the following beneficial technical effects:

[0026] The movable construction device for the steel truss bridge cantilever end has the following beneficial technical effects:

[0027] (1) The movable construction device for the steel truss bridge cantilever end has the following beneficial technical effects:

[0028] (2) The movable construction device for the steel truss bridge cantilever end has the following beneficial technical effects:

[0029] (3) The movable construction device for the steel truss bridge cantilever end has the following beneficial technical effects:

[0030] (4) The movable construction device for the steel truss bridge cantilever end has the following beneficial technical effects: BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a use state diagram of the movable construction device for the steel truss bridge cantilever end of the utility model;

[0032] Figure 2 is a device schematic diagram of the movable construction device for the steel truss bridge cantilever end of the utility model;

[0033] Figure 3 is a bridge surface moving mechanism structure schematic diagram of the movable construction device for the steel truss bridge cantilever end of the utility model;

[0034] Figure 4 is a connecting channel structure schematic diagram of the movable construction device for the steel truss bridge cantilever end of the utility model;

[0035] Figure 5 is a lower operation platform structure schematic diagram of the movable construction device for the steel truss bridge cantilever end of the utility model.

[0036] In the figure: 1 overhang end, 2 bridge deck moving mechanism, 3 connecting channel, 4 lower operation platform, 5 upper rectangular steel frame, 6 lifting lug, 7 counterweight, 8 longitudinal moving pulley, 9 auxiliary braking device, 10 entrance protection structure, 11 ladder, 12 transverse limiting pulley, 13 enclosure, 14 lower rectangular steel frame. DETAILED DESCRIPTION

[0037] In the following description, for purposes of explanation and not limitation, specific details are set forth, such as specific system structures, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0038] It is to be understood that the terminology "includes", "has", "holds", "contains" and / or "comprising", when used in this specification and in the following claims, indicates the presence of the described features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0039] It is also to be understood that the terminology "and / or" when used in this specification and in the following claims, indicates any and all possible combinations of the associated listed items, and includes all possible combinations thereof.

[0040] As used in this specification and in the claims, the term "if" can be interpreted as meaning "when", or "once", or "in response to a determination", or "in response to a detection" depending on the context. Similarly, the phrase "if it is determined" or "if [a described condition or event] is detected" can be interpreted as meaning "once it is determined" or "in response to the determination", or "once [the described condition or event] is detected" or "in response to the detection [of the described condition or event]" depending on the context.

[0041] In addition, in the description of the application and in the following claims, the terms "first", "second", "third", etc. are used only to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0042] Reference within the specification of this application to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in additional embodiments," and so on, in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to some, but not all, embodiments. The terms "including," "comprising," "having," and variations thereof are meant to encompass the items listed thereafter, but do not exclude additional, unrecited items. The terms "a" or "an," as used herein in the specification, mean "one or more."

[0043] Embodiment 1

[0044] The embodiment provides a movable construction device for a steel truss bridge overhanging end, which comprises a bridge surface moving mechanism 2, a connecting channel 3 and a lower operation platform 4, wherein:

[0045] The lower operation platform 4 is suspended below the bridge surface of the steel truss bridge overhanging end; the bridge surface moving mechanism 2 is arranged above the bridge surface of the steel truss bridge overhanging end and can move back and forth on the bridge surface of the steel truss bridge overhanging end.

[0046] The lower operation platform 4 and the bridge surface moving mechanism 2 are connected through the connecting channel 3 to form a U-shaped structure.

[0047] The working process of the embodiment is as follows:

[0048] The working personnel carry working instruments and materials, enter the lower operation platform 4 from the steel truss bridge overhanging end through the connecting channel 3, and implement the construction of stiffening ribs, drainage pipes and site surface paint at the lower part of the overhanging end.

[0049] Embodiment 2

[0050] On the basis of the embodiment 1, the utility model provides a movable construction device for a steel truss bridge overhanging end, the bridge surface moving mechanism 2 includes upper part rectangular steel frame 5, lug 6, counterweight 7, longitudinal movement pulley 8 and auxiliary brake device 9, wherein:

[0051] The upper surface of the upper part rectangular steel frame 5 is provided with the lugs 6 in pairs along the bridge mileage direction.

[0052] The upper surface of the upper part rectangular steel frame 5 is provided with the counterweight 7 away from the connecting device 3.

[0053] The upper surface of the upper part rectangular steel frame 5 is provided with the auxiliary brake device 9 for braking the longitudinal movement pulley 8.

[0054] The lower surface of the upper part rectangular steel frame 5 is provided with the longitudinal movement pulley 8 in pairs along the bridge mileage direction.

[0055] The bridge deck moving mechanism 2 is hoisted to the corresponding position of the steel truss beam cantilever end by the lifting machine and the lifting lug 6 during construction, and the counterweight 7 is set in place, and then the lifting lug 6 is disconnected. During construction, under the action of manual pushing, the bridge deck moving mechanism 2 controls the moving line through the longitudinal moving pulley 8, realizes the movement of the device as a whole along the bridge mileage direction, and brakes by using the auxiliary braking device 9 when reaching the working position.

[0056] The auxiliary braking device 9 includes a square round hole steel plate, which is welded and fixed at a vertical position on the upper part of the longitudinal moving pulley and the upper part of the rectangular steel frame 5, and when braking, an external insertion rod is inserted into the round hole and combined with the self-braking of the longitudinal moving pulley 8.

[0057] Embodiment 3

[0058] On the basis of embodiment 1, the utility model provides a kind of steel truss beam bridge cantilever end movable construction device, the connecting channel 3 includes inner side frame and outer side frame, wherein:

[0059] The upper end of the inner side frame is welded and connected with the lower surface of the upper part of the rectangular steel frame 5, and the lower end of the inner side frame is welded and fixedly connected with the upper surface of the lower operating platform 4.

[0060] One end of the outer side frame is welded and connected with the upper surface of the upper part of the rectangular steel frame 5, and the other end is welded and fixedly connected with the upper surface of the lower operating platform 4, forming an entrance protection structure 10 into the lower operating platform 4.

[0061] The inner side frame includes two parallel arranged I-beams, and the upper ends of the two I-beams are welded and connected with the lower surface of the upper part of the rectangular steel frame 5.

[0062] The two I-beams are fixedly connected by a plurality of first connecting rods uniformly distributed along the axis of the I-beam, forming a ladder into the lower operating platform 4 from the bridge deck moving mechanism 2.

[0063] A transverse limiting pulley 12 is fixedly arranged on each I-beam, and the transverse limiting pulley 12 is in contact with the side wall of the steel truss beam cantilever end.

[0064] The outer side frame includes two sub-frames, and the two sub-frames are arranged in parallel along the bridge mileage direction, and the upper ends of the two sub-frames are connected by a plurality of second connecting rods uniformly distributed along the axis of the sub-frame; the lower ends of the two sub-frames are fixedly closed by steel plate drilling.

[0065] Each sub-frame includes a long steel pipe and a short steel pipe, wherein one end of the short steel pipe is fixed to the upper surface of the upper part of the rectangular steel frame 5, and the other end is connected to the long steel pipe by a third connecting rod.

[0066] The fourth connecting rods are arranged along the axial direction of the steel pipes.

[0067] Embodiment 4

[0068] On the basis of the embodiment 1, the utility model provides a kind of steel truss bridge overhang end movable construction device, the lower operating platform 4 includes lower rectangular steel frame, the upper surface of the lower rectangular steel frame is paved with bottom plate.

[0069] The upper surface of the lower matrix steel frame is provided with a fence, the fence is provided with an entrance, and the entrance is communicated with the entrance protection structure 10 on the connecting channel 3.

[0070] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A movable construction device for a steel truss bridge cantilevered end, characterized by, The bridge deck moving mechanism, the connecting channel and the lower operation platform are connected, and the lower operation platform is suspended below the overhanging end of the steel truss bridge. The bridge deck moving mechanism is arranged above the overhanging end of the steel truss bridge and can move back and forth along the mileage direction on the bridge deck of the overhanging end of the steel truss bridge. The bridge deck moving mechanism, the connecting channel and the lower operation platform are connected, and the lower operation platform is suspended below the overhanging end of the steel truss bridge.

2. The movable construction device for the overhanging end of a steel truss bridge according to claim 1, characterized in that, The upper surface of the upper rectangular steel frame is provided with a counterweight on the side away from the connecting channel.

3. The movable construction device for the overhanging end of a steel truss bridge according to claim 2, characterized in that, The upper surface of the upper rectangular steel frame is provided with a lug.

4. The movable construction device for the overhanging end of a steel truss bridge according to claim 2, characterized in that, The upper surface of the upper rectangular steel frame is provided with an auxiliary brake device for braking the longitudinal moving pulley.

5. The mobile construction device for a cantilevered end of a steel truss bridge according to claim 4, characterized in that, The auxiliary brake device comprises a square steel plate, and a round hole is formed in the square steel plate.

6. The mobile construction device for a cantilevered end of a steel truss bridge according to claim 1, characterized in that, The inner side frame and the outer side frame are connected, and the inner side frame is connected with the lower surface of the upper rectangular steel frame at the upper end and is fixedly connected with the upper surface of the lower operation platform at the lower end. The outer side frame is connected with the upper surface of the upper rectangular steel frame at one end and is fixedly connected with the upper surface of the lower operation platform at the other end, forming an entrance protection structure of the lower operation platform. The inner side frame is provided with a transverse moving pulley along the mileage direction of the bridge.

7. A mobile construction apparatus for a cantilevered end of a steel truss bridge according to claim 6, wherein The inner side frame comprises two parallel arranged I-beams, and the upper ends of the two I-beams are connected with the lower surface of the upper rectangular steel frame.

8. The mobile construction device for a cantilevered end of a steel truss bridge according to claim 6, characterized in that, The two I-beams are fixedly connected by a plurality of first connecting rods distributed along the axis of the I-beam, so as to form a ladder from the bridge deck moving mechanism to the lower operation platform. Each I-beam is fixedly provided with a transverse limiting pulley in contact with the side wall of the overhanging end of the steel truss. The outer side frame comprises two sub-frames arranged in parallel along the mileage direction of the bridge deck, and the upper ends of the two sub-frames are connected by a plurality of second connecting rods distributed along the axis of the sub-frame.

9. The mobile construction device for a cantilevered end of a steel truss bridge according to claim 6, characterized in that, Each sub-frame comprises a long steel pipe and a short steel pipe, wherein one end of the short steel pipe is fixed to the upper surface of the upper rectangular steel frame, and the other end is connected with the long steel pipe through a third connecting rod. The short steel pipe and the long steel pipe are further provided with a plurality of fourth connecting rods arranged along the axis of the steel pipe. The lower operation platform comprises a lower rectangular steel frame, and the upper surface of the lower rectangular steel frame is paved with a bottom plate.

10. The mobile construction device for a cantilevered end of a steel truss bridge according to claim 1, wherein The upper surface of the lower rectangular steel frame is provided with a fence, and the fence is provided with an entrance communicating with the entrance protection structure of the connecting channel. ​

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