Maintenance construction overhauling device for bridge with steel truss girder structure

Abstract

The utility model relates to the technical field of bridge maintenance, and particularly discloses a steel truss girder structure bridge maintenance construction overhauling device which comprises a secondary cross beam, a connecting assembly, a frame and a walking track, the frame and the walking track are arranged in the longitudinal direction, the secondary cross beam is fixedly connected to the lower portion of an upper cross beam of a bridge, and the connecting assembly is detachably fixed to the secondary cross beam of the bridge. Pulleys are detachably connected to the lower portions of the connecting assemblies and located in the walking rails, and the frame is detachably fixed to the lower portions of the walking rails and located between every two adjacent web members. Two groups of secondary cross beams and connecting assemblies are symmetrically arranged along the longitudinal center line of the frame, each group is provided with a plurality of secondary cross beams and a plurality of connecting assemblies, and the walking track is detachably connected with a limiting assembly for preventing the walking track from moving. The utility model aims to solve the problems that the existing overhauling device is not suitable for a steel truss structure bridge, so that the overhauling process is tedious in steps, long in consumed time and inconvenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge maintenance technical field, especially steel truss girder structure bridge maintenance construction overhauling device. BACKGROUND

[0002] Steel truss girder structure bridge is the structure form that the solid web steel plate girder bridge is open web according to certain rule, and the whole structure is the stress mode of beam, that is, the structure mainly bears the bending moment and shear force. Figure 1 As shown in the bridge transverse section view, the main truss is the main load-bearing structure of the steel truss girder bridge, bears the vertical load, is composed of upper chord, lower chord and web member, and the web member is divided into diagonal and vertical rod. The upper chord and lower chord mainly bear the tension and pressure, and the web member plays the role of connecting the upper chord and lower chord and transmitting load, so that the main truss forms a stable structure system, jointly bears the load from the bridge deck, and transmits the load to the support.

[0003] Because the main truss part structure of the bridge is negative, the space is narrow, the existing large-scale overhauling vehicle can only enter the space between the upper chord, lower chord and web member on one side, the device is generally installed along the transverse direction under the lower chord, and the overhauling of the upper chord part needs the help of the elevator, and the elevator needs to be moved to the hollow part of the lower chord to make the elevator rise, and the position of the elevator needs to be adjusted along the transverse direction for many times between the same transverse node to complete the overhauling of the same transverse node, so that the overhauling steps are complicated, the overhauling time is long, and the use is very inconvenient.

[0004] Secondly, because the elevators are not synchronized, the shaking in the overhauling vehicle direction is generated in the rising and falling process. However, because the safety rope of the operator can only be fixed on the elevator in the process, there is a great safety hazard to the operator. Utility model content

[0005] In view of the defects of the prior art, the utility model solves the technical problem to provide the steel truss girder structure bridge maintenance construction overhauling device, solves the problem that the existing overhauling device is not suitable for the steel truss girder structure bridge, causes the overhauling process step to be complicated, the time is long, and the use is inconvenient.

[0006] In order to solve the above problems, the utility model adopts the technical scheme: a steel truss girder structure bridge maintenance construction overhauling device, including secondary crossbeam, connecting assembly, and longitudinal car frame and walking track, the secondary crossbeam is fixedly connected below the bridge upper crossbeam, the connecting assembly is detachably fixed with the bridge secondary crossbeam, the pulley is detachably connected below the connecting assembly, the pulley is located in the walking track, the car frame is detachably fixed below the walking track and located between adjacent two web members, the secondary crossbeam and the connecting assembly are symmetrically arranged with two groups along the longitudinal center line of the car frame, each group is provided with a plurality of secondary crossbeams and a plurality of connecting assemblies, and the walking track is detachably connected with the limiting assembly for preventing the walking track from moving.

[0007] The beneficial effects of the scheme are: the vehicle frame and the walking track are longitudinally arranged, so that they can be translated in the longitudinal space between the bridge web members, and the bridge maintenance construction is gradually completed; multiple maintenance devices can be used simultaneously to perform maintenance synchronously according to needs; since the main task in the bridge maintenance process is the smooth movement of the maintenance device, the vehicle frame does not require high movement speed, so the movement of the vehicle frame by manual pushing or manual crank can meet the construction requirements, without the need for additional driving devices, which simplifies the structure of the maintenance device and reduces the self-weight; secondly, the vehicle frame is limited by the limiting assembly after being moved into position, so that the vehicle frame does not move during the maintenance process, protecting the safety of the workers.

[0008] The device solves the problem that the large maintenance vehicle can only enter the top limited space for operation on one side, and the design and operation process of the maintenance device aims to ensure smooth and safe movement, and prevents any displacement of the maintenance vehicle itself during the maintenance process by using a limiting mechanism. Not only does it improve work efficiency, but more importantly, it greatly ensures the safety of construction personnel. Even if other vehicles pass through the bridge, it will not cause shaking, thereby providing a stable and reliable working environment for the workers; making the periodic maintenance of similar structure bridges more efficient, convenient, safe and reliable. And can simultaneously expand multiple working surfaces, through the practical application of the device in the project, the construction efficiency is improved by 28%, and the effective construction period is shortened by 1 / 3. Further, the connecting assembly includes a hook, a supporting plate and an elbow bolt, the hook is hung with the secondary beam and is detachably fixed with the secondary beam through the elbow bolt, and the supporting plate is detachably fixed at the lower end of the hook. The connection between the pulley and the secondary beam is achieved by using this connection structure, and the structure is simple and convenient for quick connection, and the connection is more stable through the hook and the elbow bolt.

[0009] Further, the vehicle frame is spaced apart in the transverse direction, and a jump plate is detachably fixed between two adjacent vehicle frames. Workers can walk between the two vehicle frames; secondly, workers can stand on the jump plate to maintain the bridge structure on both sides of the vehicle frame.

[0010] Further, the pulley is rotatably connected to the connecting plate, and the connecting plate is detachably fixed with the supporting plate, and 1-4 pulleys are connected to the connecting plate. Setting multiple pulleys can increase the stress points of the walking track and support more stably.

[0011] Further, the walking track is composed of an I-shaped steel or a channel steel with two bottom plates welded together in an I shape. Such a structure can have pulleys on both side channels, providing more stable support and smoother movement.

[0012] Further, the connecting plate is symmetrical with two along the middle line of the track I-beam, and two groups of pulleys are provided, and the two groups of pulleys are fixed on the two connecting plates respectively. The support effect is improved, and the frame and the walking track move stably.

[0013] Further, the length of the frame is greater than the bay spacing of the steel truss structure bridge. The staff can stand on the frame to maintain and repair the end part of the node. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a bridge transverse section view.

[0015] Figure 2 It is a bridge installation and maintenance device transverse schematic view.

[0016] Figure 3 It is a maintenance device longitudinal schematic view.

[0017] Figure 4 It is Figure 3 The middle A part is an enlarged view.

[0018] Figure 5 It is Figure 2 It is an enlarged view of the connection part of the maintenance vehicle and the bridge. DETAILED DESCRIPTION

[0019] The following will be further described in detail through specific embodiments:

[0020] The reference signs in the drawings of the specification include: upper cross beam 1, lower cross beam 11, web 12, secondary cross beam 2, connecting assembly 21, hook 22, supporting plate 23, elbow bolt 24, connecting plate 3, pulley 31, frame 4, jump plate 5, walking track 6, limiting bolt 7.

[0021] As shown in the accompanying Figures 2-5 : a steel truss structure bridge maintenance construction and maintenance device, comprising a secondary cross beam 2, a connecting assembly 21, and a longitudinally arranged frame 4 and a walking track 6, the secondary cross beam 2 is welded below the bridge upper cross beam 1, the connecting assembly 21 is detachably fixed with the bridge secondary cross beam 2, the connecting assembly 21 is detachably connected with a pulley 31 below, the pulley 31 is located in the walking track 6, the frame 4 is fixed below the walking track 6 and located between the adjacent two webs 12 through the lug plate and the bolt, and is located above the lower cross beam 11; the secondary cross beam 2 and the connecting assembly 21 are symmetrically arranged along the longitudinal center line of the frame 4, and each group is provided with a plurality of secondary cross beams 2 and a plurality of connecting assemblies 21, and the walking track 6 is detachably connected with a limiting assembly for preventing the walking track 6 from moving.

[0022] The connecting assembly 21 comprises a hook 22, a supporting plate 23 and an elbow bolt 24, the hook 22 is hung with the secondary beam 2 and is detachably fixed with the secondary beam 2 through the elbow bolt 24, the supporting plate 23 is fixed at the lower end of the hook 22 through a bolt; the pulley 31 is rotationally connected on the connecting plate 3, the connecting plate 3 is bolted with the supporting plate 23; the walking track 6 is composed of an I-shaped steel or a channel steel with two bottom plates welded together, and the I-shaped steel is adopted in the embodiment. The connecting plate 3 is symmetrically provided with two along the center line of the track I-shaped, and two pulleys 31 are taken as a group, and the two groups of pulleys 31 are fixed on the two connecting plates 3 respectively.

[0023] The limiting assembly adopts a limiting bolt 7, and the limiting bolt 7 is fixed on the walking track 6 on the two sides of the connecting plate 3 at the end of the walking track 6.

[0024] When the next node of the bridge needs to be maintained, the car frame 4 is manually pushed to slide to the next node, or a manual handle is installed, and the manual handle is manually operated to drive the car frame 4 to slide to the next node, and in the moving process, the pulley 31 of the next node is embedded in the walking track 6, and after moving to the position, the limiting bolt 7 is arranged on the two sides of the connecting plate 3 at the two ends of the walking track 6, and the limiting bolt 7 is fixed on the walking track 6, so that the walking track 6 cannot move forward and backward; after the construction of the current node is completed, the limiting bolt 7 is removed, and the car frame 4 is pushed to move to the next node, and the maintenance of the whole bridge is completed through the reciprocating movement.

[0025] The length of the car frame 4 is greater than the bay spacing of the steel truss structure bridge, and the length of the walking track 6 is greater than the length of the car frame 4, so that the walking track 6 can be first connected with the pulley 31 of the next node when the car frame 4 is pushed to move; for example, the bay spacing of the bridge in the embodiment is 7 meters, and the length of the car frame 4 is 18 meters, which is greater than the length of two bay spacings, so that the worker can stand on the car frame 4 to maintain the end part of the node.

[0026] A plurality of car frames 4 are distributed along the transverse direction, and a jump plate 5 is fixed between two adjacent car frames 4 through a bolt; after the car frame 4 moves to the specified position, the walking track 6 is fixed by the limiting assembly, so that the car frame 4 does not relatively displace with the bridge, and then the jump plate 5 is fixed between the two car frames 4 through a bolt, so that the worker can walk between the two car frames 4; secondly, the worker can stand on the jump plate 5 to maintain the bridge structure on the two sides of the car frame 4.

[0027] The above only is the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described too much here. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A maintenance and repair device for steel truss bridges, characterized in that: The system includes a secondary crossbeam, connecting components, and a longitudinally arranged frame and travel track. The secondary crossbeam is fixedly connected to the lower part of the upper crossbeam of the bridge. The connecting components are detachably fixed to the secondary crossbeam of the bridge. A pulley is detachably connected to the lower part of the connecting components. The pulley is located inside the travel track. The frame is detachably fixed to the lower part of the travel track and located between two adjacent web members. Two sets of secondary crossbeams and connecting components are symmetrically arranged along the longitudinal centerline of the frame. Each set has multiple secondary crossbeams and multiple connecting components. The travel track is detachably connected to a limiting component to prevent movement of the travel track.

2. The maintenance and repair device for steel truss bridges according to claim 1, characterized in that: The connecting assembly includes a hook, a support plate, and an elbow bolt. The hook is hooked to the secondary crossbeam and is detachably fixed to the secondary crossbeam by the elbow bolt. The support plate is detachably fixed to the lower end of the hook.

3. The maintenance and repair device for steel truss bridge structures according to claim 1, characterized in that: The vehicle frame has multiple frames spaced laterally, and a ramp can be detachably fixed between two adjacent frames.

4. The maintenance and repair device for steel truss bridges according to claim 2, characterized in that: The pulley is rotatably connected to the connecting plate, and the connecting plate and the support plate are detachably fixed. One to four pulleys are connected to the connecting plate.

5. The maintenance and repair device for steel truss bridge structures according to claim 4, characterized in that: The travel track is made of I-beams or channel steel with two base plates welded together to form an I-shape.

6. The maintenance and repair device for steel truss bridges according to claim 5, characterized in that: Two connecting plates are symmetrically arranged along the center line of the track I-beam, and two sets of pulleys are arranged in pairs, with each pair of pulleys fixed to one of the two connecting plates.

7. The maintenance and repair device for steel truss bridges according to claim 1, characterized in that: The length of the vehicle frame is greater than the pitch of a steel truss bridge structure.

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