Bridge falling tool for manual assembly type bridge

Abstract

The utility model discloses a bridge falling tool of a manual assembly type bridge. The bridge falling tool comprises a supporting piece, a jacking hook, a jacking frame, a plug pin I and a jack. A jacking hook is fixed to the middle of one side of the supporting piece and used for being correspondingly connected with a hook on a bridge beam. The bottom of the side of the supporting piece is fixedly connected with a bridge beam through a bolt I; the other side of the supporting piece is connected with the top frame, and the connecting position is adjustable; the jack is arranged below the top frame and used for driving the top frame to move downwards to achieve bridge falling. The device does not need to occupy the space of the support and the shoreside, and does not affect the span of the bridge.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial assembled bridges, and particularly relates to a bridge lowering tool for artificial assembled bridges. Background Art

[0002] Artificial assembled bridges are usually erected by the cantilever jacking method. Their bridge lowering includes the main bridge and the guide girder. It is necessary to arrange rollers on the near shore and the far shore in advance. The guide girder and the main bridge are assembled on the rollers on the near shore, and then manually or mechanically towed to slowly and steadily push the bridge until it reaches the rollers on the far shore and is in place and lowered. The process of bridge lowering includes jacking up and lowering the bridge. The purposes are: one is to remove the rollers on the near shore and the far shore, and the other is to install the bridge bearings.

[0003] The existing technical approaches for the bridge lowering of the main bridge are as follows: The first is to use a lifting device such as a crane for bridge lowering. The main bridge is lifted by the crane, the rollers are removed, and the main bridge is lowered to a suitable position. The second is to use a special bridge lowering tool for bridge lowering. The common method is to place the bridge lowering tool under the main truss, jack up the main truss and then remove the rollers, and use the bridge lowering tool to lower the main bridge to a suitable position.

[0004] The problems existing in the first method are: one is that the technical specifications of artificial assembled bridges usually do not configure cranes, so it is not applicable in this field; the second is that this method is applicable to the situation where the bridge span and self-weight are not large, and usually there is a crane parking position in the gully under the bridge. The span of some existing artificial assembled bridges reaches more than 50 meters, and the self-weight reaches more than 100 tons, which requires a large-tonnage crane to cooperate, but the on-site site conditions often cannot meet the operation requirements of large-tonnage cranes. The problems existing in the second method are: it is required that there is enough distance between the bridge bearing and the shore to place the bridge lowering tool; considering the installation of the bearing and the space of the bridge lowering tool, the actual erected span of the bridge usually does not reach the design value. Summary of the Utility Model

[0005] In view of this, the utility model provides a bridge lowering tool for artificial assembled bridges, which does not need to occupy the space between the bearing and the shore and does not affect the bridge span.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A bridge lowering tool for artificial assembled bridges includes a support member, a jacking hook, a top frame, a pin Ⅰ and a jack;

[0008] A jacking hook is fixedly arranged in the middle of one side of the support member for corresponding connection with a hook on the bridge cross beam; at the same time, the bottom of this side of the support member is fixedly connected with the bridge cross beam through a pin Ⅰ; the other side of the support member is connected with the top frame, and the connection position is adjustable; the jack is arranged under the top frame for driving the top frame to move downwards to realize the lowering of the bridge.

[0009] Further, the other side edge of the support member is in the shape of a rack, and the opening direction of the tooth side clearance is downward; a pin hole is provided on the top frame, and the tooth side clearance is used to be connected with the pin hole through a second pin.

[0010] Further, the support member is of a housing structure, including a bottom sealing plate, side sealing plates, a top sealing plate, an inner sealing plate and two main plates;

[0011] The two main plates are arranged opposite to each other and at intervals. The bottoms of the two main plates are fixedly connected through the bottom sealing plate, the tops of the two main plates are fixedly connected through the top sealing plate, one side of the two main plates is fixedly connected through the side sealing plate, and the other side edge of the two main plates is in the shape of a rack; an inner sealing plate is fixedly connected inside the other side of the two main plates.

[0012] Further, the support member further includes a sleeve, and the sleeve is fixed at the bottom of the side sealing plate side of the two main plates for installing a first pin.

[0013] Further, the top frame is of a housing structure, including a first side plate, a rib plate, a bottom plate, a ribbed plate, a second side plate and a side plate;

[0014] The first side plate and the second side plate are arranged opposite to each other and at intervals. The rib plate is fixed between the first side plate and the second side plate, and the rib plate is parallel to the rack-shaped edge of the main plate; the bottom plate is fixed at the bottoms of the first side plate and the second side plate, and the end of the bottom plate is fixedly connected to the rib plate; the sides of the first side plate and the second side plate that cooperate with the support member are open, and the other side is fixedly connected to the side plate; the ribbed plates are respectively fixed outside the first side plate and the second side plate.

[0015] Further, clamping portions are provided at the ends of the sides of the first side plate and the second side plate that cooperate with the support member, and the clamping portions extend inwards; convex platforms extend outwards at the ends of the rack-shaped edges of the main plates, and the convex platforms extend into the top frame for engaging and positioning with the clamping portions.

[0016] Beneficial effects:

[0017] 1. The bridge lowering tool of the present utility model is used at the cross beams at both ends of the bridge. Only manual operation is required, and it cooperates with a jack to solve the problem of bridge jacking; in addition, because it cooperates with the cross beam of the bridge to lower the bridge, it does not need to occupy the space of the bearing and the shore, does not affect the bridge span, solves the problem that the distance between the bridge bearing and the shore is usually small, avoids reducing the actual erection span of the bridge due to site problems, and does not require a large hoisting device to assist in lowering the bridge, improving the site adaptability of the manually assembled bridge; secondly, the connection position between the support member and the top frame is adjustable, and it can adapt to the height changes between different bridge cross beams and the ground.

[0018] 2. The tooth side clearance on the support member of the present utility model is used for cooperative installation with the top frame, and its opening direction is downward, which is convenient for assembly, not easy to come off, and can adapt to different terrains, and can be reliably connected even if the ground is uneven.

[0019] 3. The support member and the top frame of the present utility model are both of shell structures, being light in weight and convenient for handling.

[0020] 4. The support member of the present utility model further includes a sleeve, which is used for installing the bolt Ⅰ on the one hand and can also increase the local strength at the connection on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic connection diagram of the support member and the top frame of the present utility model.

[0022] Figure 2 It is Figure 1 left view.

[0023] Figure 3 It is Figure 1 sectional view in the direction of A - A.

[0024] Figure 4 It is the three - view drawing of the support member.

[0025] Figure 5 It is Figure 4 sectional view in the direction of A - A.

[0026] Figure 6 It is the structural schematic diagram of the top frame, where (a) is the front view of the top frame, (b) is the sectional view in the direction of B - B of (a), and (c) is the sectional view in the direction of C - C of (a) (partial rib plates and bottom plates are omitted).

[0027] Figures 7 to 10 It is the drawing of the bridge - lowering operation steps of the present utility model.

[0028] Figure 11 It is the enlarged partial schematic diagram, where (a) is the enlarged schematic diagram at Ⅰ, (b) is the enlarged schematic diagram at Ⅱ, and (c) is the enlarged schematic diagram at Ⅲ.

[0029] Among them, 1 - support member, 2 - bolt Ⅱ, 3 - top frame, 4 - bolt Ⅰ, 5 - bottom sealing plate, 6 - sleeve, 7 - toothed plate, 8 - top - tight hook, 9 - side sealing plate, 10 - top sealing plate, 11 - inner sealing plate, 12 - top - frame pin hole, 13 - side plate Ⅰ, 14 - rib plate, 15 - bottom plate, 16 - ribbed plate, 17 - side plate Ⅱ, 18 - bridge cross - beam, 19 - side plate, 20 - jack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following are embodiments in conjunction with the drawings to describe the present utility model in detail.

[0031] The present utility model provides a bridge - lowering tool for artificial assembly bridges, including a support member 1, a top - tight hook 8, a top frame 3, a bolt Ⅰ 4 and a jack 20, as Figures 1 to 6 shown.

[0032] One side of the support member 1 is fixedly provided with a jacking hook 8 in the middle, which is used for corresponding connection with the hook on the bridge cross beam 18; at the same time, the bottom of this side of the support member 1 is fixedly connected with the bridge cross beam 18 through the pin Ⅰ 4, thereby realizing the connection with the bridge cross beam 18; the other side of the support member 1 is connected with the top frame 3, and the connection position is adjustable; the jack 20 is arranged below the top frame 3 and is used to drive the top frame 3 to move downward to realize the lowering of the bridge.

[0033] Preferably, the edge of the other side of the support member 1 is in the shape of a rack, and the opening direction of the tooth side gap is downward; there is a top frame pin hole 12 on the top frame 3, and the tooth side gap is used to be connected with the top frame pin hole 12 through the pin Ⅱ 2. The appropriate connection position between the support member 1 and the top frame 3 can be selected according to the height of the bridge from the ground.

[0034] As an improvement, the support member 1 is of a shell structure, including a bottom sealing plate 5, side sealing plates 9, a top sealing plate 10, an inner sealing plate 11, a sleeve 6 and two main plates; the two main plates are arranged opposite to each other and at intervals, the bottoms of the two main plates are fixedly connected through the bottom sealing plate 5, the tops of the two main plates are fixedly connected through the top sealing plate 10, one side of the two main plates is fixedly connected through the side sealing plate 9, and the edge of the other side of the two main plates is in the shape of a rack, called the tooth plate 7; the inner side of the other side of the two main plates is fixedly connected with the inner sealing plate 11. The sleeve 6 is fixed at the bottom of the side sealing plate 9 side of the two main plates and is used for installing the pin Ⅰ 4. The bottom sealing plate 5, side sealing plates 9, top sealing plate 10, inner sealing plate 11, sleeve 6 and the main plates are all fixedly connected by welding.

[0035] The top frame 3 is of a shell structure, including side plate Ⅰ 13, rib plate 14, bottom plate 15, ribbed plate 16, side plate Ⅱ 17 and side plate 19; side plate Ⅰ 13 and side plate Ⅱ 17 are arranged opposite to each other and at intervals, the rib plate 14 is fixed between side plate Ⅰ 13 and side plate Ⅱ 17, the bottom plate 15 is fixed at the bottoms of side plate Ⅰ 13 and side plate Ⅱ 17, and at the same time, the end of the bottom plate 15 is fixedly connected with the rib plate 14; the sides of side plate Ⅰ 13 and side plate Ⅱ 17 that cooperate with the support member 1 are open, and the other side is fixedly connected with the side plate 19; the ribbed plates 16 are respectively horizontally fixed on the outer sides of side plate Ⅰ 13 and side plate Ⅱ 17. The side plate Ⅰ 13, rib plate 14, bottom plate 15, ribbed plate 16, side plate Ⅱ 17 and side plate 19 are all fixedly connected by welding. As a further improvement, the rib plate 14 is inclined, and the inclination direction is the same as that of the tooth plate 7, that is, the two are parallel, which can limit the rotation of the top frame 3 when the jack 20 jacks up the top frame 3.

[0036] The ends of the sides of side plate Ⅰ 13 and side plate Ⅱ 17 that cooperate with the support member 1 are provided with clamping parts, and the clamping parts extend inwards; the ends of the rack-shaped edges of the tooth plate 7 extend outwards with convex platforms. When the support member 1 is connected with the top frame 3, the convex platforms extend into the top frame 3 and are used for clamping and positioning with the clamping parts.

[0037] As Figures 7 to 11As shown in the figure, when the bridge collapses: First, fix the jacking hook 8 on one side of the support member 1 to the corresponding hook on the bridge cross beam 18, and at the same time connect the sleeve 6 and the bridge cross beam 18 through the pin Ⅰ 4; Then, select a suitable connection position according to the height of the bridge from the ground and install the top frame 3 on the other side of the support member 1. The boss on the toothed plate 7 of the support member 1 is engaged and positioned with the clamping part of the top frame 3, and is connected through the pin Ⅱ 2; After that, arrange the jack 20 below the top frame 3, and the jack 20 cooperates with the bottom plate 15 of the top frame 3; Drive the top frame 3 to move downward by using the jack 20, so as to drive the support member 1 to move downward, and then drive the bridge to fall.

[0038] In summary, the above is only a preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bridge lowering tool for an artificially assembled bridge, characterized in that: It includes support parts, jacking hooks, top frames, latches I and jacks; A tightening hook is fixed in the middle of one side of the support member, which is used to connect with the hook on the bridge beam; at the same time, the bottom of the support member on this side is fixedly connected to the bridge beam through a pin I; the other side of the support member is connected to the top frame, and the connection position is adjustable; the jack is arranged under the top frame, which is used to drive the top frame to move downward to realize the lowering of the bridge.

2. The bridge lowering tool for an artificially assembled bridge as claimed in claim 1, characterized in that: The other side edge of the support member is in the shape of a rack, and the tooth side gap opening is oriented downward; a pin hole is provided on the top frame, and the tooth side gap is used to connect with the pin hole through a pin II.

3. The bridge lowering tool for an artificially assembled bridge as claimed in claim 2, characterized in that: The support member is a shell structure, including a bottom sealing plate, a side sealing plate, a top sealing plate, an inner sealing plate and two main boards; The two main boards are arranged opposite to each other and at intervals. The bottoms of the two main boards are fixedly connected by a bottom sealing plate, the tops of the two main boards are fixedly connected by a top sealing plate, one side of the two main boards is fixedly connected by a side sealing plate, and the other side edges of the two main boards are rack-shaped; the other sides of the two main boards are fixedly connected to an inner sealing plate.

4. The bridge lowering tool for an artificially assembled bridge according to claim 2 or 3, characterized in that: The support member also includes a sleeve, which is fixed to the bottom of the side where the side sealing plates of the two main boards are located and is used to install the pin I.

5. The bridge lowering tool for an artificially assembled bridge as claimed in claim 2 or 3, characterized in that: The top frame is a shell structure, including side plate I, rib plate, bottom plate, ribbed plate, side plate II and side plate; The side panels I and II are arranged opposite to each other and at intervals, the rib plate is fixed between the side panels I and II, and the rib plate is parallel to the rack-shaped edge of the main board; the bottom plate is fixed to the bottom of the side panels I and II, and the end of the bottom plate is fixedly connected to the rib plate; the side of the side panels I and II that cooperate with the support members is open, and the other side is fixedly connected to the side panel; the ribbed plates are respectively fixed to the outside of the side panels I and II.

6. The bridge lowering tool for an artificially assembled bridge as claimed in claim 5, characterized in that: The side ends of the side plates I and II that cooperate with the support members are provided with clamping parts, and the clamping parts extend inwardly; the rack-shaped edge ends of the main board extend outwardly with bosses, and the bosses extend into the top frame for engaging and positioning with the clamping parts.

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