WO2015024464A1

WO2015024464A1 - Quickly assembled truss for hanging baskets

Info

Publication number: WO2015024464A1
Application number: PCT/CN2014/084048
Authority: WO
Inventors: 高作平; 周剑波; 陈明祥; 张畅
Original assignee: 武汉武大巨成结构股份有限公司
Priority date: 2013-08-21
Filing date: 2014-08-10
Publication date: 2015-02-26
Also published as: CN103437283A; CN103437283B

Abstract

A quickly assembled truss for hanging baskets, comprising upper cord planar connection rods (9) and lower cord planar connection rods (10); web rods (11) are connected between the ends of the upper cord planar connection rods (9) and the lower cord planar connection rods (10); the upper connection points of the upper cord planar connection rods (9) and the lower cord planar connection rods (10) are provided on the outside with upper node shaft bolts (2), and the lower connection points of the upper cord planar connection rods (9) and the lower cord planar connection rods (10) are provided on the outside with lower node shaft bolts (3); two neighboring upper node shaft bolts (2) and lower node shaft bolts (3) are connected hingely via a diagonal web rod (1); the upper node shaft bolts (2) at the same side are provided with upper cord rods (4), and lower cord rods (5) are correspondingly provided at the lower node shaft bolts (3); the upper plane of the upper cord rods (4) are provided with an aluminum gangplank (15). The truss for hanging baskets has a compact structure, and uses a structure of overall extension and partial assembly. Diagonal web rods can be extended or collapsed for quick assembly and disassembly. The present invention occupies small space, and is suitable for bridge inspection and maintenance.

Description

Hanging basket truss capable of quick assembly

[0001] The present invention relates to a basket truss, and more particularly to a basket truss that can be assembled quickly, and belongs to the technical field of bridge maintenance equipment.

Background technique

[0002] With the advancement of a large number of new bridge projects in China and the accumulation of damage to old bridges, the amount of bridge inspection and reinforcement construction is currently large. Although there are some professional hanging basket products on the market, they have one common feature: small span, generally 5 meters to 12 meters, high price, and can not be assembled quickly, difficult to transport and expensive, unable to adapt to the bridge Structural normalization testing and reinforcement construction requirements. At present, in many bridge construction or inspection projects, the self-made basket system is widely used. The baskets are assembled by single bolts through joint bolts, which is difficult to assemble and is not easy to transport. The basket is assembled by assembling a large number of bolts one by one. The bolting work is large and takes a long time. Taking the 28-deep basket as an example, the assembly time required for 5 people to work at the same time is 5 hours, which is not conducive to improving the construction. Efficiency and savings in engineering costs.

[0003] For example, the Chinese patent authorization publication number is: CN102635069A, and the announcement date is: August 15, 2012 invention patent discloses a composite bridge truss structure assembly rotating frame, including a bracket, and the bracket is formed into a narrow and wide trapezoidal stable structure. Two bearing seats are fixedly mounted on both ends of the bracket, a frame type platform is arranged in the middle of the bracket, two shafts are fixedly connected on both sides of the frame type platform, and the two bearing housings are connected with the bracket, in the frame The inside of the platform is provided with eight workpieces, and the workpiece is fixed on the frame platform by a pressure plate, and the frame platform can be rotated around the axis by a certain angle on the bracket. However, the structure of the device is complicated, cannot be assembled and disassembled quickly, and cannot be integrally stretched and unfolded. It is difficult, time-consuming and labor-intensive to assemble and disassemble, occupying a large space, and being inconvenient to transport, which is not conducive to improving the construction efficiency of bridge maintenance.

Summary of the invention

[0004] The object of the present invention is to solve the single structure of the hanging basket truss used in the existing bridge maintenance, which cannot be assembled and disassembled quickly, and is difficult and time-consuming to assemble and disassemble, and the space occupied is large, and the defects of transportation are not easy. Insufficient, it is now available as a fast-assembling basket truss that is compact, quick to assemble and disassemble, small in space, easy to transport, easy to use, and reusable.

[0005] In order to achieve the above object, the technical solution of the present invention is: a basket truss that can be quickly assembled, including an upper chord plane connecting rod and a lower chord plane connecting rod, and an end portion of the upper chord plane connecting rod and the lower chord plane connecting rod An abdominal rod is respectively connected, and an upper node shaft bolt is arranged on an outer side of the upper end of the upper chord plane connecting rod and the lower chord plane connecting rod, and a lower node shaft bolt is arranged on the outer side of the upper end of the upper chord plane connecting rod and the lower chord plane connecting rod , the adjacent two upper node shaft bolts and the lower node shaft bolt are hinged by a diagonal web, and the upper joint shaft bolts on the same side are mounted with an upper chord. A lower chord is mounted on the lower node shaft bolt, and an aluminum spring plate is mounted on the upper plane of the upper chord by bolts.

[0006] The upper chord is equidistantly disposed with a guardrail support, and the guardrail support is vertically installed on the guardrail support, and the guardrail is connected by a plurality of guardrails, and the guardrail is a steel cable or a soft rope, steel Both ends of the cable or the cord are respectively fixed on the upper chord.

[0007] The end portions of the upper chord and the lower chord are respectively provided with end plates, and the end plates are provided with bolt holes, and the upper chord and the lower chord respectively pass the bolt holes on the end plate and the upper node shaft bolt and the lower node shaft bolt Connected.

[0008] The inner diameter of the guardrail support is larger than the outer diameter of the guardrail, the bottom end of the guardrail is sleeved into the inner hole of the guardrail support, and the guardrail support and the guardrail are fixed by the screw.

[0009] The intersecting bars are respectively fixed on the diagonal lines of the rectangular frames formed by the upper chord plane connecting rod, the lower chord plane connecting rod and the webs, and the intersecting rods are made of angle steel.

[0010] The aluminum springboard is formed by longitudinally and cross-welding of the slotted aluminum material, and a patterned aluminum plate is also laid on the board surface and the bottom of the aluminum springboard.

[0011] The upper chord and the lower chord are both made of steel pipe, and the guardrail is made of steel pipe or aluminum alloy.

[0012] The upper node shaft bolt and the lower node shaft bolt are respectively provided with a limit position circlip.

[0013] The beneficial effects of the present invention are:

1. The inclined web group of the present invention can be rotated or folded around a node axis by a certain angle, and the upper node shaft bolt is mounted with an upper chord, and the lower node shaft bolt is correspondingly equipped with a lower chord, and the upper chord and the lower string are mounted. A rectangular frame formed by the upper chord connecting rod, the lower chord connecting rod and the web is installed between the rods, forming a space truss structure with quick installation and reasonable force.

[0014] 2. The invention is provided with an aluminum springboard on the upper plane of the upper chord. The aluminum springboard can not only bear the vertical load, but also has a certain in-plane stiffness, and can play a certain horizontal supporting role on the upper chord. A guardrail is installed through the guardrail support, and the guardrails are connected by a plurality of guardrails to improve the safety protection performance during construction.

[0015] 3. The invention has compact structure, adopts integral stretching and partial assembling structure, and the inclined web can realize stretching or gathering, which is convenient for quick assembly and disassembly, and has small space occupation, is convenient for transportation and repeated use, and can be widely used. Used for bridge overhaul.

DRAWINGS

1 is a schematic view showing the structure of a diagonal web of the present invention when unstretched.

2 is a schematic structural view of the oblique web of the present invention after stretching and stretching.

3 is a schematic structural view of the oblique web of the present invention after stretching and deploying the upper chord and the lower chord.

4 is a schematic structural view of the utility model after installing the guard rail and the guard rail. [0020] FIG. 5 is a schematic view showing the connection of the upper chord and the upper chord plane connecting rod of the present invention.

[0021] FIG. 6 is a schematic view showing the connection of the lower chord and the lower chord plane connecting rod of the present invention.

7 is a schematic structural view of a rectangular frame of the present invention.

8 is a schematic structural view of a joint shaft bolt connection portion of the present invention.

9 is a side view of the joint shaft bolt connection portion of the present invention.

10 is a schematic structural view of the present invention after laying an aluminum springboard.

11 is a schematic view showing the structure of an end portion of an upper chord and a lower chord according to the present invention.

12 is a side view of FIG. 11.

13 is a schematic view showing the end structure of the web of the present invention.

14 is a side view of FIG. 13.

[0030] In the figure: the inclined web 1, the upper node shaft bolt 2, the lower node shaft bolt 3, the upper chord 4, the lower chord 5, the guard rail support 6, the guardrail 7, the guard rail protection cable 8, the upper chord plane connecting rod 9, The lower chord plane connecting rod 10, the web rod 11, the cross rod 12, the moving wheel 13, the limit retaining spring 14, the aluminum spring board 15.

Concrete i 3⁄4r

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

1 to 14, a quick-assembling basket truss of the present invention includes an upper chord plane connecting rod 9 and a lower chord plane connecting rod 10, an end of the upper chord plane connecting rod 9 and the lower chord plane connecting rod 10. An abdominal rod 11 is respectively connected between the upper shaft connecting rod 9 and the lower end of the lower chord connecting rod 10, and the upper node shaft bolt 2 is disposed at the lower end of the upper chord plane connecting rod 9 and the lower chord plane connecting rod 10 The lower node shaft bolt 3 is disposed on the outer side, and the adjacent two upper node shaft bolts 2 and the lower node shaft bolt 3 are hinged by the inclined web 1 , and the upper node shaft bolt 2 on the same side is mounted with the upper chord 4 A lower chord 5 is mounted on the lower node shaft bolt 3, and an aluminum springboard 15 is attached to the upper plane of the upper chord 4 by bolts.

[0033] The upper chord 4 is equidistantly disposed with a guardrail support 6, and the guardrail support 6 is vertically mounted with a guardrail 7, a guardrail

7 is connected to the whole by a plurality of guard rails 8 and the guard rails 8 are steel cables or cords, and the ends of the ropes or cords are respectively fixed on the upper chord 4.

[0034] The end portions of the upper chord 4 and the lower chord 5 are respectively provided with end plates, and the end plates are provided with bolt holes, and the upper chord 4 and the lower chord 5 respectively pass the bolt holes on the end plates and the upper node shaft bolts 2 It is connected to the lower node shaft bolt 3.

[0035] The inner diameter of the guard rail support 6 is larger than the outer diameter of the guard rail 7, and the bottom end of the guard rail 7 is fitted into the inner hole of the guard rail support 6, and the guard rail support 6 and the guard rail 7 are fixed by the screw.

[0036] The diagonal line of the rectangular frame formed by the upper chord plane connecting rod 9, the lower chord plane connecting rod 10 and the web 11 Cross bars 12 are fixed respectively, and the cross bars 12 are made of angle steel.

[0037] The aluminum springboard 15 is formed by cross-welding of the slot-shaped aluminum material, and a pattern aluminum plate is further laid on the board surface and the bottom of the aluminum springboard 15.

[0038] The upper chord 4 and the lower chord 5 are both made of steel pipe, and the guardrail 7 is made of steel pipe or aluminum alloy.

[0039] The upper node shaft bolt 2 and the lower node shaft bolt 3 are respectively provided with a limit position circlip 14 .

[0040] Referring to FIG. 3, a rectangular frame formed by a web 11, an upper chord plane connecting rod 9, a lower chord plane connecting rod 10, and a web 11 is respectively connected between the end portions of the upper chord plane connecting rod 9 and the lower chord plane connecting rod 10. And the cross bars 12 are respectively fixed on the diagonal lines of the rectangular frame. The cross bar 12 is made of angle steel, and the cross bar 12 serves as a support for improving the stability of the rectangular frame. The upper node shaft bolt 2 is disposed on the outer side of the upper end of the upper chord plane connecting rod 9 and the lower chord plane connecting rod 10, and the lower node shaft bolt 3 is provided on the outer side of the lower end of the upper chord plane connecting rod 9 and the lower chord plane connecting rod 10, the upper chord plane The connecting rod 9 and the lower chord plane connecting rod 10 mainly serve to connect. The two adjacent upper node shaft bolts 2 and the lower node shaft bolts 3 are hinged by the inclined web 1 and the formed diagonal web system can be stretched or folded, which is quick and easy to deploy.

[0041] The upper node shaft bolt 2 on the same side is mounted with the upper chord 4, and the lower node shaft bolt 3 is correspondingly mounted with the lower chord 5. The end portions of the upper chord 4 and the lower chord 5 are respectively provided with end plates, and the end plates are provided with bolt holes, and the upper chord 4 and the lower chord 5 respectively pass the bolt holes on the end plates and the upper node shaft bolts 2 and the lower node shaft bolts 3 phase connection. Both the upper chord 4 and the lower chord 5 are made of steel pipe and have good strength.

[0042] The upper chord 4 is equidistantly disposed with a guard rail support 6, the inner diameter of the guard rail support 6 is larger than the outer diameter of the guard rail 7, and the bottom end of the guard rail 7 is fitted into the inner hole of the guard rail support 6, and is passed through a screw or The rivet secures the guard rail support 6 and the guard rail 7, and the guard rail 7 is perpendicular to the upper chord 4. The guard rails 7 are connected by a plurality of guard rails 8 and the guard rails 8 are steel cables or cords, and the two ends of the ropes or cords are respectively fixed on the upper chord 4.

[0043] An aluminum springboard is mounted on the upper plane of the upper chord 4 by bolts, and the aluminum springboard is formed by cross-section welding of the slotted aluminum material, and a pattern aluminum plate is also laid on the surface and the bottom of the aluminum springboard. In addition to the vertical load, the aluminum springboard should have a certain in-plane stiffness and horizontal support, which increases the space stiffness of the truss.

[0044] According to the above design ideas, based on the overall optimization of the finite element model and the calculation of the node bearing performance, combined with the load test verification, the basic parameters of the basket platform are finally determined. The calculation of the space truss structure includes material strength check, member yield stress check, node bearing capacity check and overall structural stability check. Due to the uncertainty of the joint characteristics of the nodes and the spatial torsional effect, the finite element simulation of stability is difficult, so the stability of the overall structure is determined by the load test.

[0045] The invention adopts an overall stretching and partial assembling structure, and the inclined web can realize stretching or gathering, which is convenient for quick assembly and disassembly, and greatly facilitates transportation. It eliminates the need for a traditional hanging basket to be assembled with a large number of bolts. The trivial process saves manpower and is conducive to improving the construction efficiency of bridge overhaul.

Claims

Claim

1. A quick-assembling basket truss comprising a winding plane connecting rod (9) and a lower chord connecting rod (10), respectively, between the upper chord plane connecting rod (9) and the lower chord plane connecting rod (10) Connected with a web (11), characterized in that: an upper node shaft bolt is arranged on the outer side of the upper end of the upper chord plane connecting rod (9) and the lower chord plane connecting rod (10)

(2), the lower node joint bolt (9) and the lower chord plane connecting rod (10) are provided with a lower node shaft bolt (3) on the outer side of the lower end joint, two adjacent upper node shaft bolts (2) and the lower node shaft The bolts (3) are hinged by the inclined webs (1), the upper joint shaft bolts (2) on the same side are mounted with the upper chord (4), and the lower joint shaft bolts (3) are correspondingly equipped with the lower chords ( 5) An aluminum springboard (15) is attached to the upper plane of the upper chord (4) by bolts.

2. A quick-assembling basket truss according to claim 1, characterized in that: the upper chord (4) is equidistantly arranged with a guard support (6), the guard support (6) Vertically installed with guardrails (7), the guardrails (7) are connected by a plurality of guardrails (8), and the guardrails (8) are steel cables or cords, and the two ends of the ropes or cords are respectively fixed. On the upper chord (4).

3. The quick-assembling basket truss according to claim 1, wherein: the ends of the upper chord (4) and the lower chord (5) are respectively provided with end plates, and the end plates are opened The bolt holes, upper chord (4) and lower chord (5) are connected to the upper node shaft bolt (2) and the lower node shaft bolt (3) via bolt holes on the end plate, respectively.

4. A quick-assembling basket truss according to claim 1, wherein: the inner diameter of the guard rail support (6) is larger than the outer diameter of the guard rail (7), and the bottom end of the guard rail (7) Insert the inner hole of the guardrail support (6) and secure the guardrail support (6) and the guardrail (7) with the screw.

5. A quick-assembling basket truss according to claim 1, characterized by: a rectangular frame formed by the upper chord plane connecting rod (9), the lower chord plane connecting rod (10) and the web (11) The cross bars (12) are fixed on the diagonal lines, and the cross bars (12) are made of angle steel.

6. The quick-assembling basket truss according to claim 1, wherein: the aluminum springboard (15) is formed by slot-and-iron aluminum cross-over welding, and the board of the aluminum springboard (15) The surface and the bottom of the board are also covered with patterned aluminum plates.

7. The quick-assembling basket truss according to claim 1, wherein: the upper chord (4) and the lower chord (5) are made of steel pipe, and the guardrail (7) is steel pipe or aluminum. Alloy material.

8. The quick-assembling basket truss according to claim 1, wherein: the upper node shaft bolt (2) and the lower node shaft bolt (3) are respectively provided with a limit position circlip (14) .