CN221218504U - Pulling device for adjusting accuracy of main truss sheet of steel truss girder - Google Patents
Pulling device for adjusting accuracy of main truss sheet of steel truss girder Download PDFInfo
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- CN221218504U CN221218504U CN202322594360.6U CN202322594360U CN221218504U CN 221218504 U CN221218504 U CN 221218504U CN 202322594360 U CN202322594360 U CN 202322594360U CN 221218504 U CN221218504 U CN 221218504U
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- 238000010276 construction Methods 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000004891 communication Methods 0.000 description 1
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Abstract
The utility model provides a pulling device for adjusting the accuracy of a main truss sheet of a steel truss girder, which belongs to the technical field of bridge construction and comprises the following components: the connecting piece is detachably connected with the upper end of the main truss sheet of the steel truss girder; the fixing piece is fixedly arranged at one side far away from the bottom of the main truss sheet of the steel truss girder; one end of the adjusting component is connected with the fixing piece, and the other end of the adjusting component is connected with the connecting piece; according to the utility model, the adjusting component is obliquely arranged, the precision of the main truss sheet of the steel truss girder is adjusted through the expansion and contraction of the adjusting component, the structure is simple, the operation is convenient, and the production cost is low.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a pulling device for adjusting the accuracy of a main truss sheet of a steel truss girder.
Background
The main principle of the steel truss girder bridge is a plane truss, and the steel truss girder bridge is a lattice girder under the action of vertical load. When the steel truss bridge is assembled, the left main truss sheet and the right main truss sheet are firstly hoisted and installed through large equipment, and the other structures such as the cross beam, the bridge deck and the like are installed. In the construction process of the main truss sheet positioning accuracy adjustment, the accuracy requirement on the main truss sheet is higher.
In the prior art, a main truss sheet is hung at an installation position by using a portal crane, the main truss sheet is installed by using a positioning plate, an installation position of an opening is initially aligned, then an adjustable support system is formed by connecting a double-acting hydraulic rod and an inclined strut steel pipe, and the transverse position of the truss sheet is adjusted by using a PLC digital control system, so that the installation and adjustment of the steel truss beam are completed.
But in the prior art, the gantry crane is required to be used for installation, the adjustable supporting system is required to be provided with additional hoisting equipment, the construction difficulty is high, and the precision adjustment is not convenient enough.
Disclosure of utility model
Therefore, the utility model aims to overcome the defects of complicated operation and low economic benefit of the main truss sheet adjustment in the prior art, thereby providing a pulling device for adjusting the accuracy of the main truss sheet of the steel truss.
In order to solve the technical problems, the utility model provides a pulling device for adjusting the accuracy of a main truss sheet of a steel truss girder, which is used for pulling two sides of the main truss sheet of the steel truss girder, and comprises:
The connecting piece is detachably connected with the upper end of the main truss sheet of the steel truss girder;
The fixing piece is fixedly arranged at one side far away from the bottom of the main truss sheet of the steel truss girder;
And one end of the adjusting component is connected with the fixing piece, and the other end of the adjusting component is connected with the connecting piece.
Preferably, the connecting piece comprises a clamping plate, wherein the clamping plate is provided with a through hole for being connected with the adjusting component, the clamping plate is provided with a clamping groove with a downward opening, and the clamping groove is used for being clamped on an upper flange extending upwards of the main truss sheet of the steel truss.
Preferably, the through hole in the card is located at the upper corner of the side of the adjustment assembly adjacent the card.
Preferably, the connector comprises a connecting plate, one face of the connecting plate is in abutting connection with the side edge of the main truss sheet of the steel truss girder, the other face of the connecting plate is provided with a vertical plate, and the vertical plate is provided with a through hole for being connected with the adjusting assembly.
Preferably, the connecting plates are connected with the main truss sheets of the steel truss girder through fasteners.
Preferably, a plurality of connecting holes are formed in the connecting plate, a plurality of threaded holes corresponding to the connecting holes one by one are formed in the main truss sheet of the steel truss, and the connecting holes of the connecting plate are penetrated through bolts and then are connected to the threaded holes of the main truss sheet of the steel truss in a threaded mode.
Preferably, the connection hole has a plurality disposed around the vertical plate.
Preferably, the adjusting assembly comprises: the upper lifting hook of the chain block is connected with the connecting piece through a steel wire rope, and the lower lifting hook of the chain block is connected with the fixing piece.
Preferably, the fixing member has an upwardly protruding vertical plate having a through hole for hooking the lower hook.
Preferably, the wire rope connected to the upper hook is connected to the connecting member through a shackle, the connecting member has a vertical plate protruding toward one side, and the vertical plate has a through hole for passing through the shackle.
The technical scheme of the utility model has the following advantages:
1. According to the pulling device for adjusting the precision of the main truss sheet of the steel truss girder, the upper ends of the main truss sheet of the steel truss girder are detachably connected through the connecting pieces, the fixing pieces are arranged on one side away from the bottoms of the main truss sheet of the steel truss girder, one end of the adjusting assembly is connected with the fixing pieces, and the other end of the adjusting assembly is connected with the connecting pieces, so that the adjusting assembly is inclined, the precision of the main truss sheet of the steel truss girder is adjusted through the expansion and contraction of the adjusting assembly, the structure is simple, the operation is convenient, and the production cost is low.
2. According to the pulling device for adjusting the precision of the main girder pieces of the steel girders, the adjusting component is connected with the clamping plates, the clamping grooves on the clamping plates are embedded into the upper flanges of the main girder pieces of the steel girders, so that the clamping plates are connected with the main girder pieces of the steel girders, the clamping connection and the disassembly of the clamping plates and the main girder pieces of the steel girders are more convenient, and the efficiency is improved.
3. According to the pulling device for adjusting the accuracy of the main truss sheet of the steel truss girder, the through holes of the clamping plates are positioned at the upper corners of one side close to the adjusting assembly, so that the clamping plates can be clamped with the upper flanges of the main truss sheet of the steel truss girder more firmly when the adjusting assembly is pulled.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a pulling apparatus provided in a first embodiment of the present utility model for adjusting the main girder segments of left and right steel girders, respectively;
FIG. 2 is a front view of the pulling device of FIG. 1;
FIG. 3 is a front view of a pulling apparatus provided in a second embodiment of the present utility model for adjusting the left and right main girder segments of a steel girder, respectively;
FIG. 4 is a front view of the pulling device of FIG. 3;
Fig. 5 is a left side view of the connection plate of fig. 3.
Reference numerals illustrate:
1. A fixing member; 2. a clamping plate; 3. a clamping groove; 4. a connecting plate; 5. chain block; 6. shackle off; 7. a wire rope.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
The pulling device for adjusting the accuracy of the main truss sheet of the steel truss girder is used for adjusting the accuracy of the main truss sheet when the steel truss girder is installed.
As shown in fig. 1 and fig. 2, a specific implementation manner of a pulling device for adjusting accuracy of a main truss sheet of a steel truss girder provided in this embodiment is used for pulling two sides of the main truss sheet of the steel truss girder, and includes: the connecting piece is detachably connected with the upper end of the main truss sheet of the steel truss girder; the fixing piece 1 is fixedly arranged on the ground far away from one side of the bottom of the main truss sheet of the steel truss; one end of the adjusting component is connected with the fixing piece 1, the other end of the adjusting component is connected with the connecting piece, the adjusting component on one side is loosened to pull the upper end of the steel truss girder main truss girder sheet to rotate by taking the bottom as the center of a circle until the steel truss girder main truss girder sheet accords with the precision specified by production, and then the steel truss girder main truss girder sheet is fixed, so that the precision adjustment of the steel truss girder main truss girder sheet is realized, the structure is simple, the operation is convenient, and the production cost is low.
As shown in fig. 2, for one embodiment of the pulling device for adjusting the accuracy of the main truss sheet of the steel truss provided in this embodiment, the connector includes a clamping plate 2, the clamping plate 2 has a through hole for connecting with an adjusting component, the clamping plate 2 has a clamping slot 3 with a downward opening, and the clamping slot 3 is used for being clamped on an upper flange extending upwards of the main truss sheet of the steel truss. During installation, after the clamping groove 3 on the clamping plate 2 is aligned with the upper flange of the main truss sheet of the steel truss, the clamping plate 2 is downwards moved to be clamped in, and the installation and the disassembly are more convenient. In addition, as an alternative embodiment, through holes are formed in the clamping plate 2, and bolts pass through the through holes and the steel truss main truss sheets and are then screwed down by nuts.
It should be noted that, the thickness of the clamping plate 2 is 25-40mm, and in this embodiment, 28mm is preferred, and when the clamping plate 2 is clamped on the main truss sheet of the steel truss, the clamping plate 2 will not slip when the adjusting assembly is operated.
As shown in fig. 2, in one embodiment of the pulling device for adjusting the accuracy of the main truss sheet of the steel truss provided in this embodiment, the through hole on the clamping plate 2 is located at the upper corner of the side of the adjusting assembly close to the clamping plate 2, at this time, the pulling force generated by shrinkage of the adjusting assembly acts on the upper corner of the side of the clamping plate 2 close to the adjusting assembly, towards the side of the adjusting assembly, and the lower end of the clamping plate 2 close to the adjusting assembly always abuts against the end surface of the upper flange of the main truss sheet of the steel truss. In addition, as an alternative embodiment, the through hole in the card 2 is located at the lower corner of the side of the adjustment assembly that is adjacent to the card 2.
Specifically, the width of the clamping groove 3 of the clamping plate 2 is equal to the thickness of the upper flange of the main truss sheet of the steel truss girder, and the clamping is firmer at the moment. The width of the clamping groove 3 of the clamping plate 2 is slightly larger than the thickness of the upper flange of the main truss sheet of the steel truss girder.
As shown in fig. 2, for one embodiment of a pulling device for adjusting the accuracy of a main truss sheet of a steel truss girder provided in this embodiment, an adjusting assembly includes: the chain block 5, the last lifting hook of chain block 5 passes through wire rope 7 and is connected with the connecting piece, and the lower lifting hook of chain block 5 is connected with mounting 1, pulls the chain this moment, can make the chain tighten up and then drive the connecting piece removal by wire rope 7. In addition, as an alternative embodiment, the adjusting component is an electric hoist.
As shown in fig. 2, for one embodiment of the pulling device for adjusting the accuracy of the main truss sheet of the steel truss provided in this embodiment, the fixing member 1 is provided with an upward protruding vertical plate, the vertical plate is provided with a through hole for hooking the lower hook, and the fixing member 1 is fixedly arranged on the ground through an expansion bolt. The vertical plate is semicircular, the center of the vertical plate is provided with a hole, the hole is a through hole, and the lower lifting hook of the chain block 5 is hooked and fixed after passing through the through hole. In addition, as an alternative embodiment, the fixing member 1 is a U-shaped screw, a threaded section of the U-shaped screw is fixed on the ground, and the lower lifting hook is hooked and fixed after passing through the screw.
A installation mode that is used for adjusting pulling device of steel truss girder main truss piece precision: the fixed setting in ground of mounting 1, the vertical board of mounting 1 extends the setting up. The connecting piece is connected with the upper end of the main truss sheet of the steel truss girder, and the connecting piece is rotationally connected with a shackle 6. The upper lifting hook of the chain block 5 of the adjusting component is connected with the shackle 6 through a steel wire rope 7, and the lower lifting hook is connected with a through hole on a vertical plate of the fixing piece 1.
Working principle of pulling device for adjusting accuracy of main truss sheet of steel truss girder: the pulling devices are arranged on two sides of the main girder truss sheet of the steel girder truss, and the perpendicularity of the vertical end face and the levelness of the horizontal end face of the main girder truss sheet of the steel girder truss are adjusted through loosening the chain block 5 on one side and tensioning the chain block 5 on the other side, namely the installation accuracy of the main girder truss sheet of the steel girder truss is adjusted.
Example two
The second embodiment is different from the first embodiment in the structure of the connecting member, and the other portions are the same as the first embodiment.
As shown in fig. 3 and 4, for one implementation manner of the pulling device for adjusting the accuracy of the main truss sheet of the steel truss provided in this embodiment, the connecting piece includes a connecting plate 4, one surface of the connecting plate 4 is attached to and connected to a side edge of the main truss sheet of the steel truss, a vertical plate is provided on the other surface of the connecting plate 4, a through hole is formed in the vertical plate, and the through hole is used for being connected with an adjusting component, so that the connecting plate 4 is moved by the adjusting component, and then the upper end of the main truss sheet of the steel truss is moved, thereby adjusting the accuracy of the main truss sheet of the steel truss. In addition, as an alternative implementation mode, the connecting piece is a connecting block, one surface of the connecting piece is connected to the main truss sheet of the steel truss in an abutting mode, the center of the connecting piece is provided with a hole, and the adjusting component penetrates through the hole to be connected with the connecting piece.
As shown in fig. 4, in one implementation manner of the pulling device for adjusting the accuracy of the main truss sheet of the steel truss girder provided in this embodiment, the connection plate 4 is connected with the main truss sheet of the steel truss girder through a fastener, the fastener is a bolt, and the bolt passes through the connection plate 4 and is in threaded connection with the main truss sheet of the steel truss girder. In addition, as an alternative embodiment, the connecting plate 4 is welded and fixed with the outer end surface of the main truss sheet of the steel truss girder. In addition, as an alternative embodiment, the connection plate 4 is integrally formed with the main girder sheet of the steel girder.
As shown in fig. 5, for one implementation mode of the pulling device for adjusting the accuracy of the main truss sheet of the steel truss provided in this embodiment, six connecting holes are provided on the connecting plate 4, six threaded holes corresponding to the connecting holes one by one are provided on the main truss sheet of the steel truss, and the screw threads are connected to the threaded holes of the main truss sheet of the steel truss after passing through the connecting holes of the connecting plate 4 through bolts. Screw holes of the steel truss girder main truss girder sheets are prefabricated, the connecting holes of the connecting plates 4 are in one-to-one correspondence with the prefabricated screw holes of the steel truss girder main truss girder sheets and then are fixed by bolts, and the steel truss girder main truss girder is convenient to install and detach by only fixing and detaching the bolts. In addition, as an alternative embodiment, the number of the connection holes is not limited, and may be four, eight, or the like.
As shown in fig. 5, for one embodiment of the pulling device for adjusting the accuracy of the main truss sheet of the steel truss girder provided in this embodiment, the connecting holes have six holes arranged around the vertical plate, and the connecting holes have two rows symmetrically arranged with the vertical plate as seen from the vertical direction, and three holes are arranged in each row. In addition, as an alternative embodiment, the number of the connection holes is not limited, and may be four, eight, or the like. In addition, as an alternative embodiment, the connection holes may be arranged in a circumferential array around the center of the vertical plate.
As shown in fig. 5, in one embodiment of the pulling device for adjusting the accuracy of the main truss sheet of the steel truss girder provided in this embodiment, the steel wire rope 7 connected to the upper hook is connected to the connecting member through the shackle 6, the connecting member has a vertical plate protruding toward one side, and the vertical plate has a through hole for passing through the shackle 6. The shackle 6 is a connecting device commonly used in mechanical engineering in the prior art, in this embodiment, a straight annular D shape is adopted, a pin is connected with a curved ring by threads, and the pin passes through a through hole at one end of the curved ring and then is connected with a threaded hole at the other end. The connection fixation of the wire rope 7 and the connecting piece can be better realized through the shackle 6. In addition, as an alternative embodiment, the shackle 6 may not be provided and the wire rope 7 may be provided directly in the through hole.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (9)
1. A draw device for adjusting steel truss girder main truss girder piece precision, its characterized in that is used for drawing in the both sides of steel truss girder main truss girder piece, includes:
the connecting piece is detachably connected with the upper end of the main truss sheet of the steel truss girder;
the fixing piece (1) is fixedly arranged at one side far away from the bottom of the main truss sheet of the steel truss girder;
One end of the adjusting component is connected with the fixing piece (1), and the other end of the adjusting component is connected with the connecting piece;
The adjustment assembly includes: the chain block (5), the last lifting hook of chain block (5) pass through wire rope (7) with the connecting piece is connected, the lower lifting hook of chain block (5) with mounting (1) is connected.
2. The pulling device for adjusting the accuracy of the main truss sheet of the steel truss girder according to claim 1, wherein the connecting piece comprises a clamping plate (2), a through hole for connecting with the adjusting component is formed in the clamping plate (2), the clamping plate (2) is provided with a clamping groove (3) with a downward opening, and the clamping groove (3) is used for being clamped on an upward extending upper flange of the main truss sheet of the steel truss girder.
3. A pulling device for adjusting the accuracy of a main girder sheet of a steel girder according to claim 2, characterized in that the through hole in the clamping plate (2) is located at the upper corner of the side of the adjusting assembly close to the clamping plate (2).
4. The pulling device for adjusting the accuracy of the main girder segments of the steel girders according to claim 1, characterized in that the connecting piece comprises a connecting plate (4), one face of the connecting plate (4) being attached against the side edges of the main girder segments of the steel girders, the other face of the connecting plate (4) being provided with a vertical plate having a through hole for connection with the adjusting assembly.
5. The pulling device for adjusting the accuracy of the main girder segments of the steel girders according to claim 4, characterized in that the connecting plates (4) are connected with the main girder segments of the steel girders by fasteners.
6. The pulling device for adjusting the precision of the steel truss main truss sheet according to claim 4, wherein a plurality of connecting holes are formed in the connecting plate (4), a plurality of threaded holes corresponding to the connecting holes one by one are formed in the steel truss main truss sheet, and the steel truss main truss sheet is connected to the threaded holes of the steel truss main truss sheet through bolts penetrating through the connecting holes of the connecting plate (4) in a threaded mode.
7. The pulling apparatus for adjusting the accuracy of a main girder of a steel girder according to claim 6, wherein the connection hole has a plurality of holes disposed around the vertical plate.
8. The pulling apparatus for adjusting the accuracy of main girder segments of steel girders according to any one of claims 1 to 7, characterized in that the fixing element (1) has upward protruding vertical plates with through holes for hooking the lower hooks.
9. The pulling device for adjusting the accuracy of the main girder pieces of the steel girder according to claim 8, wherein the wire rope (7) connected to the upper hook is connected to the connecting member through the shackle (6), the connecting member has a vertical plate protruding toward one side, and the vertical plate has a through hole for passing through the shackle (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322594360.6U CN221218504U (en) | 2023-09-22 | 2023-09-22 | Pulling device for adjusting accuracy of main truss sheet of steel truss girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322594360.6U CN221218504U (en) | 2023-09-22 | 2023-09-22 | Pulling device for adjusting accuracy of main truss sheet of steel truss girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221218504U true CN221218504U (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322594360.6U Active CN221218504U (en) | 2023-09-22 | 2023-09-22 | Pulling device for adjusting accuracy of main truss sheet of steel truss girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221218504U (en) |
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2023
- 2023-09-22 CN CN202322594360.6U patent/CN221218504U/en active Active
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