CN203742072U - Compression rod with adjustable length for self-balancing pre-stressed cable strut grid structure - Google Patents
Compression rod with adjustable length for self-balancing pre-stressed cable strut grid structure Download PDFInfo
- Publication number
- CN203742072U CN203742072U CN201320349194.7U CN201320349194U CN203742072U CN 203742072 U CN203742072 U CN 203742072U CN 201320349194 U CN201320349194 U CN 201320349194U CN 203742072 U CN203742072 U CN 203742072U
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- China
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- pipe fitting
- connecting elements
- self
- length
- depression bar
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Abstract
The utility model provides a compression rod with adjustable length for a self-balancing pre-stressed cable strut grid structure, and relates to the field of space steel structures. Aiming at the problems that when a pre-stressed cable strut grid structure is formed, the back-out length of a self node of the compression rod is limited and a node member is overlarge, the utility model provides a compression rod with adjustable length for a self-balancing pre-stressed cable strut grid structure. The technical key points are as follows: the compression rod with adjustable length for the self-balancing pre-stressed cable-strut grid structure is composed of two segments of tubular rod elements and a connecting element, wherein internal threads are arranged on the inner tube walls of the connected ends of the two segments of tubular rod elements, the connecting element is used for connecting the two segments of tubular rod elements into a whole through columnar external threads, and the lengths screwed in the tubular rod elements of the external threads at the two ends of the connecting element are controlled to control the length of the compression rod. By adopting the compression rod provided by the utility model, an extension effect of any size of a casting die can be achieved, a large pre-stress force can be provided for the self-balancing pre-stressed cable strut grid structure, moreover the size of the node member is greatly decreased and the extension work of the rod elements is quick and efficient to implement.
Description
Technical field
The utility model relates to spatial steel structure, relates in particular to a kind of self-balancing type prestressed cable bar network.
Background technology
The spatial steel structure that self-balance prestress rope bar network is comprised of flexible cable and rigidity depression bar, different from common network, the structure basic unit body of this structure is a kind of hexahedron being comprised of flexible cable and depression bar.The rigidity of structure is to obtain from the tension force of drag-line.Due to the constructivity of self-balance prestress rope bar network on special, what structural system need be adopted balance prestressed cable bar network need set up higher prestressing force in each depression bar and drag-line, therefore there is in practical larger problem in this depression bar method of extending from node component back-out depression bar, be mainly manifested in: structure node member need be made particular design, back-out technique by depression bar has determined that the size of node component is larger, causes the method implementation structure with extending the indirect stretch-draw flexible cable of compression web member of dead load to be shaped.The method that realizes the elongation of self-balance prestress rope bar network depression bar that is seen at present document is, at the two ends of depression bar, reverse screw thread is set, in advance the screw thread at two ends is screwed in the node component of end, during structure formation, depression bar is screwed out in the node component at two ends, thereby realize the elongation of depression bar.Due to from significantly increasing, affected economy and the aesthetic property of engineering, and the back-out effect of depression bar is to the larger disturbance of being connected with of depression bar and node, the depression bar after back-out is difficult to assurance with the reliability being connected of node component.The utility model has provided a kind of depression bar of the adjustable in length for self-balance prestress rope bar network, this depression bar can be realized easily the elongation of depression bar in the situation that not disturbance depression bar is connected with node, forming process safety, efficient, does not need heavy tensioning equipment.
Summary of the invention
The purpose of this utility model is that the size of the structure node member that causes of depression bar screws out in the node component of two ends when solving existing self-balance prestress rope bar network and be shaped method is large, the poor problem of structure economics, and a kind of depression bar that is applicable to the adjustable in length of self-balance prestress rope bar network is provided.
The technical solution of the utility model is: the single compression web member in common space lattice steel work is truncated into two sections, by connecting elements, two end-posts is reconnected and are integrated.
The depression bar of described adjustable in length is comprised of pipe fitting I 1, pipe fitting II 2 and connecting elements 3 three parts, its structure as shown in Figure 1, one end of pipe fitting I 1 and pipe fitting II 2 is connected with corresponding sphere nodes 4 in self-balance prestress rope bar network, the other end of pipe fitting I 1 and pipe fitting II 2 arranges the internal thread of certain length at the inner tubal wall of its end regions, the length sum of the internal thread arranging in pipe fitting I 1 and pipe fitting II 2 need be not less than the general extension demand of this depression bar; Connecting elements 3 is twin-screw members of a steel, screw thread on the screw rod at two ends on screw thread and pipe fitting I 1, pipe fitting II 2 inner tubal walls is supporting, single direction rotation connecting elements 3 can synchronously screw in pipe fitting I 1 and pipe fitting II 2 by the screw rod at connecting elements 3 two ends or synchronously screw out pipe fitting I 1 and pipe fitting II 2, thereby changes the size a of depression bar.
Wherein, the externally threaded part that arranges at connecting elements 3 two ends is cylindric, and residue position is prism (as hexagonal prism or eight prisms) so that adopt the apparatuses such as spanner to twist operation to its enforcement;
Wherein, the physical characteristics such as the material of pipe fitting I 1 and pipe fitting II 2, cross section are identical, and its specification is determined by the designing requirement of self-balance prestress rope bar network.
The beneficial effects of the utility model are:
The utility model is mainly reflected in lower two aspects to the contribution of prior art:
1) elongation of rod member is from the adjustment of rod member self length, irrelevant with the size of the node component of structure, so the significantly minimizing of the size of node component, saved steel, reduced the deadweight of structure.
2) adopt rod member length adjuster of the present utility model can realize the elongation effect of the compression member of arbitrary dimension, can provide larger degree of prestressing for self-balance prestress rope bar network.
Accompanying drawing explanation
Fig. 1 is the depression bar organigram of the described adjustable in length for self-balance prestress rope bar network, wherein: the sphere nodes 4 of pipe fitting I 1, pipe fitting II 2, connecting elements 3, self-balance prestress rope bar network; A is the elevation of described rod member, and B is the cross-section structure of described rod member, and C is elevation and the plan view of connecting elements 3.
The specific embodiment
In conjunction with present embodiment being described as Fig. 1, the depression bar of described adjustable in length is comprised of three parts: pipe fitting I 1, pipe fitting II 2 and connecting elements 3.One end of pipe fitting I 1 and pipe fitting II 2 need be mounted on self-balance prestress rope bar network node component, and the other end of pipe fitting I 1 and pipe fitting II 2 arranges the internal thread of certain length at the inner tubal wall of its end regions; Be processed at the two ends of connecting elements 3 has externally threaded cylinder, and the internal thread of externally threaded specification and pipe fitting I 1, pipe fitting II 2 inner tubal walls is supporting.When the screw thread direction of screw thread can realize single direction rotation connecting elements 3, the external screw thread at connecting elements 3 two ends synchronously can be screwed in pipe fitting I 1 and pipe fitting II 2.
Depression bar for described adjustable in length, before rope bar network integral assembling, first the male thread portion at connecting elements 3 two ends is screwed in pipe fitting I 1 and pipe fitting II 2 completely, then the depression bar welding of whole or the bolt that by pipe fitting I 1, connecting elements 3, pipe fitting II 2, are formed are connected on node component corresponding in rope bar network, in the time need to implementing stretch-draw forming to the drag-line of structure, with the unidirectional connecting elements 3 of twisting of mechanical wrench, the size a of depression bar self is extended, until reach predetermined state.
Claims (4)
1. for a depression bar for the adjustable in length of self-balance prestress rope bar network, it is characterized in that: described length-adjustable depression bar is comprised of pipe fitting I (1), pipe fitting II (2), connecting elements (3) three parts; Pipe fitting I (1) is reliably connected with corresponding sphere nodes (4) in network with one end of pipe fitting II (2), the other end of pipe fitting I (1) and pipe fitting II (2) is connected by connecting elements (3), and pipe fitting I (1) arranges the internal thread of certain length at the inner tubal wall of the end regions being connected with connecting elements (3) with pipe fitting II (2); Connecting elements (3) is the twin-screw member of a steel, screw thread on the screw rod at two ends on screw thread and pipe fitting I (1), pipe fitting II (2) inner tubal wall is supporting, single direction rotation connecting elements (3) can synchronously screw in pipe fitting I (1) and pipe fitting II (2) by the screw rod at connecting elements (3) two ends or synchronously screw out pipe fitting I (1) and pipe fitting II (2), thereby changes the size (a) of depression bar.
2. the depression bar of a kind of adjustable in length for self-balance prestress rope bar network according to claim 1, is characterized in that: the inner tubal wall of the end regions that pipe fitting I (1), pipe fitting II (2) are connected with connecting elements (3) possesses the internal thread of certain length; The length sum of the internal thread arranging in pipe fitting I (1) and pipe fitting II (2) need be not less than the general extension demand of this depression bar.
3. the depression bar of a kind of adjustable in length for self-balance prestress rope bar network according to claim 1, it is characterized in that: connecting elements (3) is steel components, its two ends are cylindric, residue position is prism, circular cylinder shaped portion at connecting elements (3) two ends arranges external screw thread, and in external screw thread and pipe fitting I (1), pipe fitting II (2), internal thread matches.
4. the depression bar of a kind of adjustable in length for self-balance prestress rope bar network according to claim 1, it is characterized in that: in the external screw thread at connecting elements (3) two ends and pipe fitting I (1), pipe fitting II (2), the screw thread direction of internal thread must guarantee single direction rotation connecting elements (3) in the situation that, can the external screw thread at connecting elements (3) two ends synchronously be screwed in pipe fitting I (1) and pipe fitting II (2) or synchronously screw out pipe fitting I (1) and pipe fitting II (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320349194.7U CN203742072U (en) | 2013-06-19 | 2013-06-19 | Compression rod with adjustable length for self-balancing pre-stressed cable strut grid structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320349194.7U CN203742072U (en) | 2013-06-19 | 2013-06-19 | Compression rod with adjustable length for self-balancing pre-stressed cable strut grid structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742072U true CN203742072U (en) | 2014-07-30 |
Family
ID=51341891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320349194.7U Expired - Fee Related CN203742072U (en) | 2013-06-19 | 2013-06-19 | Compression rod with adjustable length for self-balancing pre-stressed cable strut grid structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234307A (en) * | 2013-06-19 | 2014-12-24 | 东北林业大学 | Length-adjustable compression strut for self-balanced pre-stressing cable-strut grid structure |
-
2013
- 2013-06-19 CN CN201320349194.7U patent/CN203742072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234307A (en) * | 2013-06-19 | 2014-12-24 | 东北林业大学 | Length-adjustable compression strut for self-balanced pre-stressing cable-strut grid structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20150619 |
|
| EXPY | Termination of patent right or utility model |