CN212388740U - Cable support truss structure with height adjustable points - Google Patents

Abstract

The utility model discloses a take cable of height-adjustable point to hold in palm truss structure, including the rigid truss, arrange the cable in the rigid truss below, the cable passes through height-adjustable's cable node and is connected with the lower chord of rigid truss, height-adjustable's cable node is including flexible adjustable subassembly and pulley, the pulley is rotationally connected in the one end of flexible adjustable subassembly, the other end of flexible adjustable subassembly and the lower chord fixed connection of rigid truss, the pulley is hugged closely with the cable, can freely adjust the interval between rigid truss and the cable through flexible adjustable subassembly. The utility model discloses compare with traditional rigidity truss structure, the cable of taking height adjustable point holds in palm truss structure full play the high strength characteristic of cable, satisfies traditional truss structure appearance simultaneously penetrating pleasing to the eye and under the prerequisite of the reasonable characteristics of atress, practiced thrift the quantity of material to can realize that the structure of more large-span strides across, be favorable to satisfying the abundant physique requirement of building.

Description

Cable support truss structure with height adjustable points

Technical Field

The utility model belongs to the technical field of building structure engineering, in particular to take cable of high adjustable point to hold in palm truss structure.

Background

The truss structure is a long-history structure form, and ancient romans build a terra river bridge crossing the Danube by using trusses, and in the renaming period of literature, Italy architects (Palladio, Pa.) also begin to build a bridge by using wood trusses. With the continuous increase of the steel yield, the steel truss is widely used, and is widely applied to public buildings such as industrial plants, exhibition halls, gymnasiums and bridges. The Moscoma gym, which was built in 1818 by the Betaclu design, was the oldest large-span truss structure in existence, with a span of 50 meters, far exceeding that of contemporary conventional buildings. The Foss gulf railway bridge built in 1890 is a representative work of that era, is the second longest multi-span cantilever bridge in the world, is still passing passenger cars, trucks and trains to date, and is a milestone in bridge design and construction history. The Tokyo curtain international convention and exhibition center built in 1997 adopts the lower concave forked fish belly type truss, and the shape is pretty. The san Francisco international airport built in 2000 is taken as a model for perfect combination of buildings and structures, and adopts a fish belly type continuous space truss, and the maximum span is 116 meters.

The truss structure has the main characteristics of light dead weight, reasonable stress, capability of spanning a large span and economic material consumption, so that the truss structure has a very wide development space in the structural field. However, the lower concave truss also has the defects, the axial tension of the lower chord of the lower concave truss under the load action is much larger than that of the upper convex truss and the linear truss, the mid-span deflection is relatively large, and the requirement of the building shape of the lower concave large-span is not favorably met.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: in order to solve the existing problems, the cable support truss structure with the height adjustable point is provided, which can fully play the high-strength characteristic of the stay cable so as to realize the spanning of a larger-span structure.

The technical scheme of the utility model is realized like this: take cable support truss structure of height-adjustable point, its characterized in that: including the rigid truss, arrange the cable in the rigid truss below, the cable passes through height-adjustable's cable node and is connected with the lower chord of rigid truss, height-adjustable's cable node is including flexible adjustable subassembly and pulley, the pulley rotationally connects the one end at flexible adjustable subassembly, the other end of flexible adjustable subassembly and the lower chord fixed connection of rigid truss, the pulley is hugged closely with the cable, can freely adjust the interval between rigid truss and the cable through flexible adjustable subassembly.

Take cable of height-adjustable point to hold in palm truss structure, its the shape of rigidity truss is concave shape curve.

Take cable of height-adjustable point to hold in palm truss structure, its the cable is arranged and is hugged closely in the pulley below that corresponds along rigid truss's lower chord below, the both ends of cable articulate anchor in corresponding rigid truss's lower chord both ends respectively.

Take cable of height-adjustable regulation point to hold in palm truss structure, its flexible adjustable subassembly comprises two sections at least sleeves that cup joint each other, can follow its axial between two sections at least sleeves and adjust whole length.

Take cable of height-adjustable regulation point to hold in palm truss structure, its flexible adjustable subassembly comprises inner tube and urceolus, the inner tube rotates with the pulley to be connected, urceolus and rigid truss fixed connection, the urceolus cup joints can freely stretch out and draw back along its axial at inner tube one end and inner tube for the urceolus to keep relative fixed connection state with the urceolus after adjusting required length.

Take cable of height-adjustable point to hold in palm truss structure, its the inner tube passes through the multiunit screw thread and is connected with the urceolus to freely adjust connection length through the number of turns that changes the inner tube and twist the urceolus.

Take cable of height-adjustable point to hold in palm truss structure, it is in be provided with the logical groove that is used for holding the pulley on the inner tube, it forms the connecting portion of being connected with the pulley to lead to the inner tube that the groove corresponds, the pulley is arranged in the inner tube and is connected through the connecting portion rotation of round pin axle and inner tube.

Take cable of height-adjustable regulation point to hold in palm truss structure, its lead to the inner tube tip that the groove corresponds for being tubaeform open structure, the tubaeform opening part of inner tube tip is arranged in to the cable, and the cable is laminated with the corresponding periphery of pulley.

The utility model discloses a concave truss constitutes cable support truss structure with prestressed cable combination together down to height-adjustable's cable node, height through adjusting node, realize the free regulation of distance between cable and the truss, make the cable wholly keep the more excellent curve shape of atress, utilize concave curve shape's characteristics down, the prestressing force along cable direction turns into along the radial ascending power of truss curve, make the structure produce ascending pre-arch and initial moment of flexure, when bearing the load, cable and truss structure synergism, this kind of truss structure's bearing capacity has been increased by a wide margin, this kind of truss structure's amount of deflection has been reduced simultaneously, realize the strideing across of bigger span.

The utility model discloses compare with traditional rigidity truss structure, the cable of taking height adjustable point holds in palm truss structure full play the high strength characteristic of cable, satisfies traditional truss structure appearance simultaneously penetrating pleasing to the eye and under the prerequisite of the reasonable characteristics of atress, practiced thrift the quantity of material to can realize that the structure of more large-span strides across, be favorable to satisfying the abundant physique requirement of building.

Drawings

Fig. 1 is a schematic structural diagram of the middle rigid truss of the present invention.

Fig. 2 is the utility model discloses arrange the structural schematic diagram of a plurality of height-adjustable's cable node on the well cable.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is the connection schematic diagram of the guy cable node with adjustable height in the utility model.

Fig. 5 is a front view of fig. 4.

Fig. 6 is a side view of fig. 4.

Fig. 7 is an exploded schematic view of fig. 4.

The labels in the figure are: 1 is the rigid truss, 2 is the cable, 3 is height-adjustable's cable node, 4 is the pulley, 5 is the inner tube, 6 is the urceolus, 7 is the screw thread, 8 is logical groove, 9 is connecting portion, 10 is the round pin axle.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is made in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, 2 and 3, the cable support truss structure with height adjustable points comprises a rigid truss 1 and a cable 2 arranged below the rigid truss 1, wherein the rigid truss 1 is shaped as a concave curve, the cable 2 is connected with a lower chord of the rigid truss 1 through a cable node 3 with adjustable height, two ends of the cable 2 are respectively hinged and anchored at two ends of the lower chord of the corresponding rigid truss 1, the cable node 3 with adjustable height comprises a telescopic adjustable component and a pulley 4, the telescopic adjustable component comprises at least two sections of sleeves which are mutually sleeved, the overall length of the at least two sections of sleeves can be adjusted along the axial direction of the sleeves, the pulley 4 is rotatably connected at one end of the telescopic adjustable component, the other end of the telescopic adjustable component is fixedly connected with the lower chord of the rigid truss 1, the cable 2 is arranged below the lower chord of the rigid truss 1 and is tightly attached to the corresponding pulley 4, the distance between the rigid truss 1 and the inhaul cable 2 can be freely adjusted through the telescopic adjustable component. The concave rigid truss and the prestressed cable are combined together to form a cable support truss structure through the height-adjustable cable node structure, the free adjustment of the distance between the cable and the truss is realized through adjusting the height of the node, the cable integrally keeps a curve shape with better stress, the characteristic of the curve shape of the concave shape is utilized, the prestress in the cable direction is converted into the force which is upward along the radial direction of the curve of the truss, the structure generates upward pre-arching and initial bending moment, when bearing load, the cable and the truss structure act in a synergistic mode, the bearing capacity of the truss structure is greatly increased, meanwhile, the deflection of the truss structure is reduced, and the spanning of larger span is realized.

As shown in fig. 4 to 7, in the present embodiment, the telescopic adjustable component is composed of an inner cylinder 5 and an outer cylinder 6, the inner cylinder 5 is rotatably connected with the pulley 4, the outer cylinder 6 is fixedly connected with the rigid truss 1, the outer cylinder 6 is sleeved at one end of the inner cylinder 5, the inner cylinder 5 can freely extend and retract along the axial direction of the outer cylinder 6, and keeps a relatively fixed connection state with the outer cylinder 6 after being adjusted to a required length, the inner cylinder 5 is connected with the outer cylinder 6 through a plurality of groups of threads 7, and the connection length can be freely adjusted by changing the number of turns of screwing the inner cylinder 5 into the outer cylinder 6.

Wherein be provided with the logical groove 8 that is used for holding pulley 4 on the inner tube 5, it forms the connecting portion 9 of being connected with pulley 4 to lead to the inner tube 5 that groove 8 corresponds, pulley 4 is arranged in inner tube 5 and is rotated through the connecting portion 9 of round pin axle 10 with inner tube 5 and is connected, lead to 5 tip of inner tube that groove 8 corresponds for being tubaeform open structure, the tubaeform opening part of inner tube 5 tip is arranged in to cable 2, and cable 2 laminates with the corresponding periphery of pulley 4, utilizes tubaeform structural design, can make the cable have certain radial movement space that allows at tubaeform opening part along the inclined plane, guarantees simultaneously that the cable can not deviate from by tubaeform opening part. Through adjusting the length of being connected of inner tube and urceolus to adjust the whole curve shape of cable, make the cable carry out work under better structure atress form, at the tensioning process, because the pulley can freely slide, make the frictional force of node very little, can effectively reduce the loss of cable prestressing force, consequently both guaranteed the reliable connection of cable and truss, can realize the free regulation of distance between cable and the truss again.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (8)

1. Take cable support truss structure of height-adjustable point, its characterized in that: including rigid truss (1), arrange cable (2) in rigid truss (1) below, cable (2) are connected with the lower chord of rigid truss (1) through height-adjustable's cable node (3), height-adjustable's cable node (3) are including flexible adjustable subassembly and pulley (4), pulley (4) rotationally connect the one end at flexible adjustable subassembly, the other end of flexible adjustable subassembly and the lower chord fixed connection of rigid truss (1), pulley (4) are hugged closely with cable (2), can freely adjust the interval between rigid truss (1) and cable (2) through flexible adjustable subassembly.

2. The cable tray truss structure with adjustable height points of claim 1, wherein: the shape of the rigid truss (1) is a concave curve.

3. The cable tray truss structure with adjustable height points of claim 2, wherein: the inhaul cable (2) is arranged below the lower chord of the rigid truss (1) and tightly attached below the corresponding pulley (4), and two ends of the inhaul cable (2) are respectively hinged and anchored at two ends of the lower chord of the corresponding rigid truss (1).

4. A cable-supported truss structure with height adjustable points as claimed in claim 1, 2 or 3 wherein: the telescopic adjustable component is composed of at least two sections of sleeves which are mutually sleeved, and the overall length of the telescopic adjustable component can be adjusted along the axial direction of the telescopic adjustable component between the at least two sections of sleeves.

5. The cable tray truss structure with adjustable height points of claim 4, wherein: the telescopic adjustable component is composed of an inner cylinder (5) and an outer cylinder (6), the inner cylinder (5) is rotatably connected with the pulley (4), the outer cylinder (6) is fixedly connected with the rigid truss (1), the outer cylinder (6) is sleeved at one end of the inner cylinder (5), the inner cylinder (5) can freely stretch and retract along the axial direction of the outer cylinder (6), and the telescopic adjustable component and the outer cylinder (6) keep a relatively fixed connection state after the required length is adjusted.

6. The cable tray truss structure with adjustable height points of claim 5, wherein: the inner cylinder (5) is connected with the outer cylinder (6) through a plurality of groups of threads (7), and the connection length is freely adjusted by changing the number of turns of screwing the inner cylinder (5) into the outer cylinder (6).

7. The cable tray truss structure with adjustable height points of claim 6, wherein: be provided with logical groove (8) that are used for holding pulley (4) on inner tube (5), inner tube (5) that lead to groove (8) and correspond form connecting portion (9) of being connected with pulley (4), pulley (4) are arranged in inner tube (5) and are rotated through connecting portion (9) of round pin axle (10) and inner tube (5) and be connected.

8. The cable tray truss structure with adjustable height points of claim 7, wherein: the end part of the inner cylinder (5) corresponding to the through groove (8) is of a horn-shaped opening structure, the guy cable (2) is arranged at the horn-shaped opening part of the end part of the inner cylinder (5), and the guy cable (2) is attached to the corresponding circumferential surface of the pulley (4).

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