CN2592744Y

CN2592744Y - Inhaul-cable overload protection apparatus

Info

Publication number: CN2592744Y
Application number: CN 03222724
Authority: CN
Inventors: 罗忆
Original assignee: Zhuhai Jingyi Glass Engineering Co ltd
Current assignee: Zhuhai Jingyi Glass Engineering Co ltd
Priority date: 2003-01-03
Filing date: 2003-01-03
Publication date: 2003-12-17
Anticipated expiration: 2013-01-03

Abstract

The utility model relates to an overload protection device of a bracing cable. The utility model relates to the overload protection device of a bracing cable under dynamic load, particularly the overload protection device of a bracing cable when a building curtain wall adopts bracing cable grids. The device is provided with a fixed connecting part and a bracing cable connecting part, wherein, the fixed connecting part and the bracing cable connecting part are connected in parallel through an overloading connecting rod and a buffering connecting device. The overloading connecting rod is a pull rod, and the middle part of the pull rod is provided with a throat of which the section area is smaller than other section areas. The buffering connecting device is a spring which is arranged between the fixed connecting part and the bracing cable connecting part. When the overloading connecting rod is broken, the whole bracing cable does not lose functions completely, or still has most of functions; after the overloading break of the overloading connecting rod happens, the overloading break which is easy to discover can be conveniently restored.

Description

The drag-line overload protection arrangement

Technical field

The utility model relates to a kind of overload protection arrangement that is in the dynamic load downhaul, the drag-line overload protection arrangement when particularly building curtain wall adopts the drag-line grid.

Background technology

The occasion that many use single cable or drag-line group are arranged, such as protective screening drag-line, electric power tower drag-line etc., the effect of drag-line is to make the fixation at two ends relatively keep stable, usually with the Design of Bearing Capacity of drag-line on greater than the maximum rating that draws according to statistics, once the external force that fixation is subjected to makes drag-line be subjected to surpassing when designing supporting capacity, the disrumpent feelings fixation that will cause of drag-line loses due stable state.

More typical example is a kind of curtain wall that adds between two buildings, it adopts one group of parallel drag-line and vertical drag-line to constitute grid, fixing plate object on grid as glass one class, because it is outdoor that curtain wall is positioned at, when wind acts on the curtain wall, every drag-line will be subjected to great pulling force, when wherein the internal force of a drag-line reaches disrumpent feelings value, the fracture fully of this drag-line can make the load of other drag-lines increase the weight of, and can cause chain reaction when serious, and whole curtain wall collapsed.

As mentioned above, existing drag-line is under the operating mode of overburden, as long as disrumpent feelings its function of just losing immediately takes place.

Summary of the invention

The purpose of this utility model provides a kind of drag-line overload protection arrangement, when surpassing drag-line design rupture pull force, and the only insurance division fracture of this protective device, load loads to the second load portion of device, makes the whole piece drag-line keep function.

Another purpose of the present utility model provides a kind of drag-line the local drag-line overload protection arrangement that is easy to find and can repairs easily after disrumpent feelings of overload takes place.

For achieving the above object, the applicant has anatomized the load character of drag-line, the load part that drag-line is subjected to usually is static prestressing force, this part can take in by the standard design when design easily, another part is a dynamic load, be positioned at open-air fixation when being subjected to blast, drag-line can produce the internal force of continuous variation with the size variation of wind-force, and the size of the internal force that this is a part of can only take in when designing according to statistics.The characteristics of dynamic load are its size pulsatile change in time; peak value behind itself and the quiescent value superposition occurs within the very short time mostly; therefore; the thought that the utility model provides technical solution is that the design reference value with the whole piece drag-line is decided to be the peak value that may occur, and protective device is made of the first load spare and the parallel connection of one second elasticity load spare that can bear peak value.

Specifically, the drag-line overload protection arrangement that the utility model provides has a fixedly connected portion, and the one end links to each other with fixture, a drag-line connecting portion, and the one end links to each other with drag-line.Between fixedly connected and drag-line connecting portion, be connected in parallel by an overload connecting rod and a buffering linkage.Described overload connecting rod is a pull bar, and there is the throat of a sectional area less than other sectional areas at its middle part, and it is the first load spare.The buffering linkage is the spring that is placed between fixedly connected and the drag-line connecting portion, forms the second elasticity load spare.

By above technical solution as seen, when drag-line load moment surpasses peak value, the overload connecting rod will rupture from the throat of cross section minimum, thereby load is born by cushioning linkage.Because buffer can extend, the big more extension of load is long more, and this is extremely helpful to making two buildings be subjected to displacement bigger situation relatively owing to earthquake, setting of ground etc., can avoid drag-line to draw bad building or the fracture of whole piece drag-line simultaneously.For the occasion that one group of drag-line bears load simultaneously, at this moment, the drag-line of fracture takes place owing to still can bear part load in the overload connecting rod, can make the unlikely collapse of whole drag-line group, has played protective effect.Simultaneously, because protective device just transships connecting rod fracture has taken place, and protective device is arranged on the end of drag-line, is convenient to find and maintain and replace.

Description of drawings

Fig. 1 is the user mode figure of the utility model most preferred embodiment;

Fig. 2 is Fig. 1 middle longitudinal section vertically, and for the purpose of expressing clearly, Fig. 2 has amplified ratio;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 2;

Fig. 5 is the sectional view at the relative Fig. 2 A-A of another embodiment place;

Fig. 6 is the sectional view at the relative Fig. 2 B-B of another embodiment place;

Fig. 7 is again the sectional view at the relative Fig. 2 A-A of embodiment place;

Fig. 8 is again the sectional view at the relative Fig. 2 B-B of embodiment place;

Fig. 9 is the state diagram that fracture back protective device takes place the overload connecting rod.

Embodiment

For the utility model is described in further detail; the most preferred embodiment that provides is a drag-line that is used for the curtain wall between two buildings; referring to Fig. 1; shown in the figure is a drag-line in the drag-line group; left end has a seat board 2 that is fixed in the building wall 1; right-hand member has a cable wire 5; one end of cable wire 5 is connecting rings 4; the other end is fixed on that another is architectural; can be fixed on also that another is architectural by another drag-line overload protection arrangement, between seat board 2 and connecting ring 4, be connected to the drag-line overload protection arrangement 3 that the utility model provides.

Referring to Fig. 2, overload protection arrangement 3 is combined by fixedly connected portion, drag-line connecting portion, overload connecting rod and buffering linkage.

Fixedly connected portion is combined by main force's plate 7, auxilliary power plate 14 and one group of connection guide rod 9, and there is a through hole at auxilliary power plate 14 middle parts, and there is the otic placode 6 that is connected with seat board 2 (fixture) in main force's plate 7 outsides, and there is the fixed part 17 with overload connecting rod 10 inboard.

The drag-line connecting portion is that an end is a flanged plate 11, and the other end is the bar 12 of connector, and its bar 12 cooperates with auxilliary power plate 14 middle part via clearance, have on the flanged plate 11 one group be connected guide rod 9 corresponding through holes, flanged plate 11 transships the fixed part 15 of connecting rod 10 in addition.

The two ends of overload connecting rod 10 link to each other with the fixed part 17,15 of main force's plate 7 and flanged plate 11;

The buffering linkage is one group and is enclosed within on the connection guide rod 9 and the stage clip 13 between flanged plate 11 and auxilliary power plate 14.

Overload connecting rod 10 is one to have the stud of throat 8, the screw of fixed part 17,15 for matching with it of main force's plate 7 and flanged plate 11.During the design drag-line, the bearing capacity of throat's section is the carrying design basis of whole piece drag-line, and in other words, throat's section is the minimum cross section of whole piece drag-line.Obviously, illustrated shape can have multiple variation, for example, when the overload connecting rod such as has at straight profile, can radially hole at the middle part to obtain light-gauge throat, also the throat of overload connecting rod can be expanded to vertically except that the connecting thread section with interior whole section.

Be provided with the tool drives position 16 that the turn bolt is used near the throat 8 of overload connecting rod 10, be used for overload connecting rod 10 is installed to device.Be that the basal area at 16 places, rear drive position, the side of bat must be greater than the basal area of throat 8 with the bat side, part of overload connecting rod 10 in this example.

Referring to Fig. 3, main force's plate 7 is a rectangular slab, and the six roots of sensation connects guide rod 9 and fixes on it in uniform way.Obviously, main force's plate 7 also can be a circular slab.

Referring to Fig. 4, auxilliary power plate 14 also is a rectangular slab, and the through hole and bar 12 matched in clearance at its middle part, the six roots of sensation connect guide rod 9 and on the one hand main force's plate are connected with auxilliary power plate 14, and on the other hand, they also are the anti-unstability core bars of six springs 13.

Referring to Fig. 5, Fig. 6, as another embodiment of the present utility model, main force's plate, auxilliary power plate and flanged plate can also be circular, it is uniform by diagram to connect guide rod, the buffering linkage of this example (connecting guide rod, groups of springs) is stressed more even in load bearing process, and structure design is better from the angle of force analysis.

Referring to Fig. 7, Fig. 8; as another embodiment of the present utility model; main force's plate, auxilliary power plate and flanged plate can also be polygons; hexagon for example; in the bigger occasion of load,, can also increase the quantity that connects guide rod, spring for reducing the breadth wise dimension of overload protection arrangement; such as eight, nine etc., the supporting capacity of overload protection arrangement is increased.

Referring to Fig. 5; under the normal duty situation; come bearing load by the overload connecting rod in the drag-line overload protection arrangement; when certain factor (as blast) causes loading when surpassing the peak value of setting; the overload connecting rod ruptures; flanged plate 11 slides along connecting guide rod 9 to diagram is right-hand under the pulling of cable wire internal force, from the load of bar 12 successively by flanged plate 11, spring 13, auxilliary power plate 14, connect guide rod 9, main force's plate transmits, and is issued to balance in the effect of spring 13.Because the whole piece drag-line relatively takes place to extend before the fracture, adds the cushioning effect of upper spring 13, this drag-line still can bear certain load.After above-mentioned factor (as blast) was eliminated, the maintenance personal can estimate the fixed end of finding and arriving this drag-line at an easy rate, and the overload connecting rod is carried out Replacement and Repair.

Claims

1, the drag-line overload protection arrangement comprises

A fixedly connected portion, the one end links to each other with fixture;

A drag-line connecting portion, the one end links to each other with drag-line;

It is characterized in that:

Fixedly connected is connected in parallel by overload connecting rod and a buffering linkage with the drag-line connecting portion.

2, drag-line overload protection arrangement according to claim 1 is characterized in that:

Described overload connecting rod is a pull bar, and there is the throat of a sectional area less than other sectional areas at its middle part;

The buffering linkage is the spring that is placed between fixedly connected and the drag-line connecting portion.

3, drag-line overload protection arrangement according to claim 1 and 2 is characterized in that:

Fixedly connected portion connects guide rod by main force's plate, auxilliary power plate and one group and combines, and there is a through hole at auxilliary power plate middle part, and the main force plate outside has the otic placode that is connected with fixture, inboard to have and transships the fixed part of connecting rod;

The drag-line connecting portion is that an end is a flanged plate, and the other end is the bar of connector, and its bar cooperates with auxilliary power plate middle part via clearance, have on the flanged plate one group be connected the corresponding through hole of guide rod, flanged plate transships the fixed part of connecting rod in addition;

The two ends of overload connecting rod link to each other with the fixed part of main force's plate and flanged plate;

The buffering linkage is one group and is enclosed within on the guide rod and the spring between flanged plate and auxilliary power plate.

4, drag-line overload protection arrangement according to claim 3 is characterized in that:

The overload connecting rod is one to have the stud of throat, the screw of the fixed part of main force's plate and flanged plate for matching with it;

Be provided with the tool drives position that the turn bolt is used near the throat of overload connecting rod.