CN216551523U - Assembled steel bridge crossbeam connecting device - Google Patents
Assembled steel bridge crossbeam connecting device Download PDFInfo
- Publication number
- CN216551523U CN216551523U CN202123001818.XU CN202123001818U CN216551523U CN 216551523 U CN216551523 U CN 216551523U CN 202123001818 U CN202123001818 U CN 202123001818U CN 216551523 U CN216551523 U CN 216551523U
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- pressing
- bottom plate
- chord member
- plate
- steel bridge
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 54
- 239000010959 steel Substances 0.000 title claims abstract description 54
- 238000003825 pressing Methods 0.000 claims abstract description 74
- 238000005452 bending Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 17
- 238000007906 compression Methods 0.000 description 17
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an assembly type steel bridge crossbeam connecting device. The upper pressing plate is provided with a pressing part for pressing and holding I-steel and a pressing part for pressing and holding the truss chord member, the pressing bottom plate comprises a base body and a boss integrally formed with the base body, the upper pressing plate can press the upper surface of the truss chord member through the pressing part and simultaneously press the pressing part on the I-steel, and the pressing bottom plate can press the lower surface of the truss chord member and then tension and fix the upper pressing plate and the pressing bottom plate through the fastener. After adopting above-mentioned structure, not only can used repeatedly, practiced thrift the material, can also convenient and fast installs and dismantles, labour saving and time saving has effectively saved construction period, has reduced construction cost, has improved the security greatly, and upper and lower two embedded designs make the connection of truss and crossbeam more firm, and its compact structure, light in weight, intensity are high, small, and the range of application is wide.
Description
Technical Field
The utility model relates to an assembly type steel bridge crossbeam connecting device, and belongs to the technical field of engineering and construction industries.
Background
The fixing of bailey steel bridge crossbeam and truss at present adopts three kinds of modes of crossbeam anchor clamps, riding bolt and welded connection to fix more, and wherein, the fixing device of crossbeam anchor clamps only limits in the formula bailey steel bridge of holding down, and the formula steel bridge of holding down receives the bridge width, and the relatively fixed influence of mounted position for the current, the bearing capacity of bridge all receive the restriction, can not satisfy the current requirement of passing of current macro-scale engineering mechanical equipment and vehicle, uses less and more, and application scope is little.
Although the fixing mode of the cross beam of the horseback riding bolt is wide in use range, the position can be limited during installation, the universal matching performance is poor, the stress is easy to deform, nuts are loosened and fall off, and potential safety hazards are caused.
Although the welding of U type device can adapt to various fixed mounting operating mode, the installation all needs welded fastening at every turn, and crossbeam and chord member faying face can not effectively compress tightly, and is also inconvenient during the dismantlement, also causes the crossbeam damage easily when cutting U type card, and U type device cuts off back repeatedly usable, has caused the wasting of resources.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide the assembled steel bridge crossbeam connecting device which is stable in connection, convenient and fast to install and disassemble, capable of improving safety, strong in universality and low in construction cost.
In order to solve the technical problem, the assembly type steel bridge crossbeam connecting device comprises an upper pressure plate, a pressing bottom plate matched with the upper pressure plate and a fastener used for connecting the upper pressure plate and the pressing bottom plate, wherein the upper pressure plate is provided with a pressing part used for pressing and holding I-steel and a pressing part used for pressing and holding a truss chord member, the pressing bottom plate comprises a base body and a boss integrally formed with the base body, the upper pressure plate can press the upper surface of the truss chord member through the pressing part and simultaneously press the pressing part on the I-steel, and the pressing bottom plate can press the lower surface of the truss chord member and then tension and fix the upper pressure plate and the pressing bottom plate through the fastener.
The pressing part of the upper pressing plate is an inclined opening surface arranged at the front part of the upper pressing plate, and the pressing part of the upper pressing plate is a convex folded edge which is arranged at the tail part of the upper pressing plate and is formed by vertically bending downwards.
The root of the bevel face is provided with a right-angle edge opening which can be pressed on the side surface of the lower cross beam.
The middle part of the upper pressure plate is provided with a waist-shaped hole for connecting a fastener in series, and the protruding part of the convex folded edge of the upper pressure plate can be embedded into an upper hollow groove formed above the truss chord member and enables the inclined opening surface to be pressed on the inner surface of the lower cross beam of the I-shaped steel.
The top of the fastener is provided with an anti-drop safety pin jack.
The edge of the base body of the compaction bottom plate is pressed on the lower surface of the truss chord member, and the lug boss is embedded into a lower hollow groove formed below the truss chord member.
After the structure is adopted, the upper pressing plate with a specific structure is adopted, the pressing bottom plate is pressed and matched with the fastener for use, the connecting device can be used in a pre-assembly mode (the connecting device is pre-assembled on the Bailey chord member in advance), the connecting device can be repeatedly used, materials are saved, the connecting device can be conveniently and quickly assembled and disassembled, time and labor are saved, the construction period is effectively saved, labor is reduced for normal construction without power supply and gas cutting welding, the construction cost is reduced, meanwhile, the reliable connecting structure effectively prevents the problems of deformation, looseness, falling and the like, the safety is greatly improved, particularly, the upper pressing plate and the upper pressing plate which are in a double-embedded type design are ingeniously utilized to enable the connection of the truss and the cross beam to be more stable, in addition, the structure is compact, the weight is light, the strength is high, the volume is small, the universality is strong according to standard part design, the upper pressing plate and the fastening piece are matched for use, and the upper pressing plate and the connecting device can be used in a pre-assembled mode of pre-assembling and can be used in a pre-assembled mode, The lower bearing type bailey steel bridge and various bailey construction platforms can be used, the installation position is not limited, and the application range is wide.
Drawings
FIG. 1 is a schematic structural view of an assembled steel bridge beam connecting device in a use state;
FIG. 2 is a schematic front view of the upper platen of the present invention;
FIG. 3 is a schematic top view of the upper platen of the present invention;
FIG. 4 is a side view of the upper platen of the present invention;
FIG. 5 is a schematic side view of the pressing base plate according to the present invention;
fig. 6 is a schematic top view of the pressing base plate according to the present invention.
Detailed Description
The assembled bailey steel bridge beam connecting device of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
As shown in the drawings, when the assembled steel bridge crossbeam connecting device is used, two sets of the assembled steel bridge crossbeam connecting devices are generally symmetrically arranged on two sides of a flange plate with the same cross section of an i-steel crossbeam for use, each set of the assembled steel bridge crossbeam connecting device comprises an upper pressing plate 1, a pressing bottom plate 2 matched with the upper pressing plate and a fastener 3 used for connecting the upper pressing plate and the pressing bottom plate, wherein the upper pressing plate 1 is provided with a pressing part used for pressing and holding the flange plate of the i-steel 9 crossbeam (lower part) and a pressing part used for pressing a truss chord 10, the cross section of the upper pressing plate 1 is in a T-shaped structure when viewed from a side view, the pressing bottom plate 2 comprises a base body 7 and a boss 8 integrally formed with the base body, and the pressing bottom plate 2 is in a convex structure when viewed from the cross section.
For the pressing and holding part of the upper pressing plate 1, the pressing and holding part can be an inclined opening surface 4 arranged at the front part of the upper pressing plate 1, the root part of the inclined opening surface 4 is provided with a right-angle edge opening which can be pressed on the side surface of the lower cross beam, the inclination of the inclined opening surface is the same as the inclination of the inner surface of the flange of the I-shaped steel cross beam, the length of the inclined surface edge is generally one fourth of the width of the I-shaped steel flange plate, and as can be seen from the figure, in the embodiment, the inclined opening at the front end of the upper pressing plate is 30MM in length, in addition, the root part of the inclined opening is provided with a right-angle edge opening, the thickness is 5MM, the inclined opening surface can tightly abut against the edge of the flange plate at the lower part of the I-shaped steel cross beam, a good limiting and fixing effect can be achieved, and the I-shaped steel cross beam is prevented from moving forwards and backwards; the middle part of the upper pressure plate is of a rectangular section structure, the middle position of the upper pressure plate is provided with a long circular bolt hole (a waist-shaped hole 6) with the diameter of 22MM x 50MM, a compression bolt can be penetrated, for the compression part of the upper pressure plate 1, the compression part can be a convex folding edge 5 formed by vertically bending downwards and arranged at the tail part of the compression part, the convex part of the convex folding edge 5 of the upper pressure plate 1 can be embedded into an upper hollow groove (formed by channel steel arranged at the edges of two sides in the length direction of a truss chord rod) formed above the truss chord rod, and an inclined opening surface 4 is pressed on the inner surface of a lower cross beam of the I-shaped steel, namely, the convex part of the convex folding edge 5 of the upper pressure plate 1 can be embedded between the channel steel of the Bailey truss chord rod to prevent the upper pressure plate from moving left and right, in addition, the compression parts at two sides of the convex folding edge 5 are higher than the bottom plane of the upper pressure plate to eliminate the angle influenced by the inclined plane at the front end of the pressure plate, the pressure plate is always in a horizontal pressing state.
To compressing tightly bottom plate 2, the central point that compresses tightly the bottom plate puts and has seted up the round hole and be used for concatenating compression bolt, the aperture of this round hole is 22MM, the edge of the base member that compresses tightly bottom plate 2 is pressed on the chord member lower surface and is made boss 8 imbed the lower dead slot that the chord member below formed, that is to say, compress tightly the bottom plate and install on the lower plane of bei lei chord member, boss 8 imbeds between two channel-section steels of bei lei chord member, width chord member channel steel interval is unanimous, the cooperation is inseparable, the effectual bottom plate that prevents to compress tightly removes about, play fine firm effect.
By adopting the structural design, the convex part of the convex folding edge 5 and the boss 8 embedded structure of the pressing bottom plate 2 are utilized to ensure that the connection is more stable and firm, the structure is compact, the weight is light, the strength is high, and the volume is small; when the upper pressing plates 1 and the pressing bottom plates 2 of the two assembling type steel bridge beam connecting devices are respectively arranged on the left side and the right side of the I-steel, pressing bolts can respectively penetrate through the pressing bottom plates of the two assembling type steel bridge beam connecting devices, the channel steel of the Bailey truss chord member and the upper pressing plates and then are screwed and fixed by nuts, so that the upper pressing plates and the pressing bottom plates jointly press flange plates of the I-steel beam to play a role in fixed connection. The bottom of the compression nut does not need to be additionally provided with an inclined gasket, so that the installation is more firm and stable, and the stress is uniform.
Further, the compression bolt can be an M20 high-strength bolt with a bolt length of about 185MM, and the top of the fastener (compression bolt) 3 can be provided with an anti-falling safety pin insertion hole 11, so that an anti-falling design is formed at the top of the bolt, and the safety is good.
The operation and use method of the assembly type steel bridge crossbeam connecting device comprises the following steps:
(1) firstly, the number of the required assembled steel bridge beam connecting devices and the mounting positions of the beams are determined according to the number of the Bailey longitudinal beams of the Bailey steel bridge, the assembled steel bridge beam connecting devices (an upper pressure plate 1, a compression bottom plate 2 and compression bolts) are pre-mounted on Bailey chord members on two sides of the mounting positions of the beams respectively, and the compression bolts are not required to be screwed down temporarily.
(2) After the cross beam is hoisted in place, the assembled steel bridge cross beam connecting devices on the two sides of the cross beam are pushed to the flange plate on the lower part of the I-shaped steel cross beam, so that the right-angle edge of the inclined opening in the front part of the pressure plate tightly props against the flange plate on the lower part of the cross beam, and the compression nut is screwed tightly, thereby completing the connection and fixation work of the cross beam.
(3) The crossbeam can be more conveniently disassembled by loosening the compression nuts by 2-3 teeth and moving the assembled steel bridge crossbeam connecting device outwards towards the two sides of the crossbeam so that the upper pressure plate is separated from the flange plate of the crossbeam.
In order to prevent the compression bolt and the compression bottom plate from accidentally falling off in the dismounting and using processes, the upper pressure plate structure designed by the utility model is optimally designed, the top of the compression bolt is provided with an anti-falling safety pin, and the nut cannot be loosened.
The whole set of connecting device does not need to be disassembled and disassembled in the mounting, dismounting and using processes, and when the assembled steel bridge crossbeam connecting device disclosed by the utility model is mounted or removed, only the pressing bottom plate needs to be rotated by 90 degrees, so that the pressing bottom plate can pass through the steel channel of the chord member of the Bailey piece, and the connecting device is convenient to mount and is more beneficial to daily use and storage.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (6)
1. The utility model provides an assembled steel bridge crossbeam connecting device which characterized in that: including top board (1), compress tightly bottom plate (2) and be used for connecting top board and compressing tightly fastener (3) of bottom plate with top board complex, top board (1) have be used for pressing the portion of holding I-steel (9) and be used for compressing tightly the portion of compressing tightly of chord member (10), compress tightly bottom plate (2) including base member (7) and with base member integrated into one piece's boss (8), top board (1) can make the portion of holding of pressing press on the I-steel when the chord member upper surface through the portion of compressing tightly, it is fixed with top board (1) and compress tightly bottom plate (2) rethread fastener (3) are taut to compress tightly bottom plate (2) on the chord member lower surface.
2. An assembled steel bridge girder connection apparatus according to claim 1, wherein: the pressing and holding part of the upper pressing plate (1) is an inclined opening surface (4) arranged at the front part of the upper pressing plate, and the pressing part of the upper pressing plate (1) is a convex folding edge (5) which is arranged at the tail part of the upper pressing plate and is formed by bending downwards vertically.
3. An assembled steel bridge girder connection apparatus according to claim 2, wherein: the root of the bevel face (4) is provided with a right-angle edge opening which can be pressed against the side surface of the lower cross beam.
4. An assembled steel bridge girder connecting device according to claim 2 or 3, wherein: the middle part of the upper pressure plate (1) is provided with a waist-shaped hole (6) for connecting fasteners in series, and the convex part of the convex folding edge (5) of the upper pressure plate (1) can be embedded into an upper hollow groove formed above the truss chord member and enables the bevel face (4) to be pressed on the inner surface of the lower cross beam of the I-shaped steel.
5. An assembled steel bridge girder connection apparatus according to claim 3, wherein: the top of the fastener (3) is provided with an anti-drop safety pin jack (11).
6. An assembled steel bridge girder connection apparatus according to claim 1, 2, 3 or 5, wherein: the edge of the base body of the compaction bottom plate (2) is pressed on the lower surface of the truss chord member, and the lug boss (8) is embedded into a lower hollow groove formed below the truss chord member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123001818.XU CN216551523U (en) | 2021-12-01 | 2021-12-01 | Assembled steel bridge crossbeam connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123001818.XU CN216551523U (en) | 2021-12-01 | 2021-12-01 | Assembled steel bridge crossbeam connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216551523U true CN216551523U (en) | 2022-05-17 |
Family
ID=81538079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123001818.XU Expired - Fee Related CN216551523U (en) | 2021-12-01 | 2021-12-01 | Assembled steel bridge crossbeam connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216551523U (en) |
-
2021
- 2021-12-01 CN CN202123001818.XU patent/CN216551523U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220517 |
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| CF01 | Termination of patent right due to non-payment of annual fee |