CN201988698U

CN201988698U - Flexible dummy bar

Info

Publication number: CN201988698U
Application number: CN2011200805905U
Authority: CN
Inventors: 郑永华; 郑利; 王军; 刘水池; 代宗岭
Original assignee: Capital Engineering & Research Inc Ltd
Current assignee: Capital Engineering & Research Inc Ltd
Priority date: 2011-03-24
Filing date: 2011-03-24
Publication date: 2011-09-28
Anticipated expiration: 2021-03-24

Abstract

The utility model provides a flexible dummy bar, wherein, the dummy bar includes: the flexible dummy bar comprises a plurality of chain links and connecting steel plates, wherein adjacent chain links are hinged with each other in a staggered mode along the advancing direction of the flexible dummy bar, and the connecting steel plates are covered on the chain links and connected with the chain links; the bearing part bearing the pressure of a withdrawal and straightening machine roller and the connecting part connected with the bearing part are arranged in two adjacent chain links, the bearing part extends out from the connecting part along the direction supporting the withdrawal and straightening machine roller and is contacted with the withdrawal and straightening machine roller, the connecting part is connected with the adjacent chain links, a waist hole is arranged in the connecting part, the length direction of the waist hole is consistent with the advancing direction of the flexible dummy bar, and the two adjacent chain links are hinged with each other in a staggered manner at the waist hole. The utility model provides a round pin hub connection department intensity weakening problem, the cracked condition of whole dummy bar when also preventing the connecting steel plate fracture simultaneously.

Description

Flexible dummy bar

Technical field

The utility model relates to field of metallurgy, especially a kind of flexible dummy bar that is used in continuous casting production.

Background technology

Dummy bar is a visual plant in the conticaster system, and it is used to guide strand to be run to the work of straightening machine at last to fan-shaped section by crystallizer.Rectangular bloom circle base casting machine dummy bar generally is divided into rigid dummy bar and flexible dummy bar, and the related dummy bar of the utility model is flexible dummy bar.Flexible dummy bar requires it can upwards do certain bending when work, and to the next level that keeps as far as possible, in addition, during dummy bar was left behind process on casting machine, dummy bar will bear the very big power of depressing of straightening machine, thereby requires each chain link to have certain intensity.

Fig. 1 and Fig. 2 are the structure of a kind of flexible dummy bar of prior art, Fig. 3 to Fig. 6 further shows its primary structure, being connected to form by connecting steel plate 2, bearing pin 3, shearing resistance cover 4 and bolt 5, nut 6 and circlip 7 by a plurality of chains 1 of this flexible dummy bar.

Extremely shown in Figure 6 as Fig. 3, this dummy bar is with connecting steel plate 2, shearing resistance cover 4 and bearing pin 3 couple together each chain link, wherein, the dummy bar chain link is formed by preceding chain link 11 that joins end to end and alternately arrange and back chain link 13, chain link 11 and back chain link 13 before two adjacent chain links 1 comprise, the stem of the afterbody of preceding chain link 11 and back chain link 13 is connected by bearing pin 3, the stem of preceding chain link 11 is connected by bearing pin 3 with the back chain link 13 of a last link units, the afterbody of back chain link 13 is connected by bearing pin 3 with the stem of the preceding chain link 11 of next link units again, each link configuration of this flexibility dummy bar is identical, and promptly preceding chain link 11 is identical with back chain link 13 structures.This flexibility dummy bar is formed by a plurality of preceding chain links that join end to end and alternately arrange 11 and back chain link 13.In addition, connecting steel plate 2 covers on preceding chain link 11 and the back chain link 13, and be connected with back chain link 13 by bolt and preceding chain link 11, when dummy bar is worked,, and be subjected to the very big power of depressing of straightening machine because the temperature of the strand that is drawn is higher, connect steel plate 2 in the traveling process of dummy bar, also certain elastic deformation will take place thereupon, to cooperate the relative motion of each chain link, dummy bar integral body can be bent upwards.

Wherein, but being hinged of the stem changing of the relative positions of the afterbody of back chain link 13 and preceding chain link 11, as shown in Figure 6, but being hinged of the afterbody changing of the relative positions of the stem of back chain link 13 and preceding chain link 11, promptly the stem of back chain link 13 is waist hole (elongated hole) in the hole of wearing the pin position, the afterbody of preceding chain link 11 is waist hole (not shown) in the hole of wearing the pin position, bearing pin 3 is installed in the waist hole 8, the changing of the relative positions up and down of bearing pin 3 has been limited in waist hole 8, but allow bearing pin 3 horizontal changing of the relative positions on the length direction in waist hole 8, bearing pin 3 horizontal changing of the relative positions amount on the length direction in waist hole 8 can be 4-12mm, for example is 5mm, 6mm, 7mm, 8mm, 9mm, 10mm etc., be the changing of the relative positions up and down that this connected mode has limited adjacent link, the relative changing of the relative positions of chain link before and after can compensating simultaneously on the dummy bar when curved, and connect steel plate 2 and also certain elastic deformation will take place thereupon, to cooperate bearing pin 3 horizontal changing of the relative positions on the length direction in waist hole 8.

Dummy bar send will bear the very big pressure of straightening machine in the dummy ingot process, as shown in Figure 5, the position at 8 places, waist hole is the load receiving part of back chain link, be that waist hole 8 is arranged on the load-bearing ear 131 of back chain link 13, in conjunction with Fig. 1 and Fig. 2 as can be known, the load-bearing ear 111 of preceding chain link 11, the load-bearing ear 131 of back chain link 13 will bear the immense pressure of straightening machine roller 9, and the activity space that waist hole 8 exists when cooperating with bearing pin 3 has weakened the intensity of the load-bearing ear 131 of back chain link 13 significantly, because preceding chain link 11 is identical with the structure of back chain link 13, so the stem of each chain link is easy deformation all, consequently influence the use of dummy bar.

Fig. 7 is the front view of the another kind of flexible dummy bar of prior art, Fig. 8 is the vertical view of Fig. 7, and existing second kind of chain link syndeton primary structure comprises the preceding chain link 21 of dummy bar, back chain link 23, connects steel plate 22, shearing resistance cover 24, bolt 25, nut 26 and joint component 27.As shown in Figure 4, this dummy bar only uses and connects steel plate 22, shearing resistance cover 24 each chain link 22 is coupled together, and bidirection chain is saved joint component 27 and retrained the relative changing of the relative positions up and down, but chain link 21 rotates relatively before and after allowing.There is not the waist hole defect of aforementioned first kind of flexible dummy bar in this dummy bar, but each chain link 21 of this dummy bar only depends on connection steel plate 22 that each chain link 21 is coupled together, and as connecting steel plate 22 fractures, then whole dummy bar is just disconnected, and this structure is also shaky durable.

The utility model content

The utility model provides a kind of flexible dummy bar, to solve the foregoing problems that existing flexible dummy bar exists.

For this reason, the utility model proposes a kind of flexible dummy bar, wherein, described dummy bar comprises: a plurality of chain links be connected steel plate, but between the adjacent link along the changing of the relative positions of described flexible dummy bar direct of travel be hinged, described connection steel plate covers on the described chain link and with described chain link and is connected; The load receiving part that bears straightening machine roll pressure is arranged in two adjacent link with the connecting portion that is connected with described load receiving part, described load receiving part stretches out from described connecting portion along the direction that supports described straightening machine roller and contacts with described straightening machine roller, described connecting portion connects described adjacent link, be provided with the waist hole in the described connecting portion, the length direction in described waist hole is consistent with described flexible dummy bar direct of travel, but adjacent two chain links are hinged with locating the changing of the relative positions in described waist hole.

Further, described adjacent two chain links comprise: first chain link that is hinged and second chain link; Described connecting portion comprises: first connecting portion, described first connecting portion are arranged in described first chain link; Second connecting portion, described second connecting portion are arranged in described second chain link, and described first connecting portion, described second connecting portion all are connected with the described steel plate that is connected; Described load receiving part comprises: first load receiving part, described first load receiving part are arranged in described first chain link; Second load receiving part, described second load receiving part is arranged in described second chain link, described first load receiving part stretches out from described first connecting portion along the direction that supports described straightening machine roller and contacts with described straightening machine roller, and described second load receiving part stretches out from described second connecting portion along the direction that supports described straightening machine roller and contacts with described straightening machine roller; Described waist hole is arranged in described first connecting portion and described second connecting portion, at described waist hole place, but described first connecting portion and described second connecting portion by the described bearing pin changing of the relative positions be hinged, described bearing pin is arranged on a side of described connection steel plate.

Further, described load receiving part is the load-bearing ear, and described load-bearing ear comprises the first load-bearing ear and the second load-bearing ear; Described first chain link comprises: with described described first connecting portion that steel plate is connected and the first load-bearing ear that stretches out from described first connecting portion of being connected, the direction of depressing along straightening machine roller, the described first load-bearing ear is given prominence to the described first connecting portion setting, and described bearing pin passes described first connecting portion and the described first load-bearing ear; Described second chain link comprises: described second connecting portion and the described second load-bearing ear, along the direction of depressing of straightening machine roller, the described second load-bearing ear is given prominence to the second connecting portion setting.

Further, described first connecting portion comprises: the pars intermedia of the stem of first connecting portion, first connecting portion and the afterbody of first connecting portion, the described first load-bearing ear comprises: the afterbody of the stem of the first load-bearing ear and the first load-bearing ear, and the afterbody of the stem of described first connecting portion and described first connecting portion is connected the described first load-bearing ear by the pars intermedia of described first connecting portion; Described second connecting portion comprises: the pars intermedia of the stem of second connecting portion, second connecting portion and the afterbody of second connecting portion, the described second load-bearing ear comprises: the afterbody of the stem of the second load-bearing ear and the second load-bearing ear, and the afterbody of the stem of described second connecting portion and described second connecting portion is connected the described second load-bearing ear by the pars intermedia of described second connecting portion; The stem of described first connecting portion has the structure between the afterbody of the afterbody that is folded in described second connecting portion and the described second load-bearing ear; The afterbody of described first connecting portion has the structure between the stem of the stem that is folded in described second connecting portion and the described second load-bearing ear; The stem of described second connecting portion has the structure between the afterbody of the afterbody that is folded in described first connecting portion and the first load-bearing ear; The afterbody of described second connecting portion has the structure between the stem of the stem that is folded in the described first load-bearing ear and first connecting portion.

Further, described waist hole is arranged on the stem of described first connecting portion and the stem of second connecting portion; Stem at described first chain link, described bearing pin passes the afterbody of second connecting portion of the waist hole of stem of described first connecting portion and described last second chain link and the mating holes of second load receiving part, but described bearing pin is connected with the described first chain link changing of the relative positions, and the afterbody of described bearing pin and described last second connecting portion and the afterbody of the described second load-bearing ear are connected; Stem at described second chain link, described bearing pin passes the mating holes of the afterbody of the connecting portion afterbody of the waist hole of stem of described second connecting portion and described first chain link and the first load-bearing ear, but described bearing pin is connected with the described second chain link changing of the relative positions, and the afterbody of first connecting portion of described bearing pin and described first chain link and the afterbody of the described first load-bearing ear are connected.Further, described waist hole is arranged on the afterbody of described connecting portion; Afterbody at described first chain link, described bearing pin passes the mating holes of the stem of the stem of the second load-bearing ear of the waist hole of afterbody of described first connecting portion and described second chain link and second connecting portion, but described bearing pin is connected with the described first chain link changing of the relative positions, and the stem of second connecting portion of described bearing pin and described second chain link and the stem of the described second load-bearing ear are connected; Afterbody at described second chain link, described bearing pin pass the described second connecting portion afterbody the waist hole and and the mating holes of the stem of the stem of first connecting portion of described back one first chain link and the first load-bearing ear, but described bearing pin is connected with the described second chain link changing of the relative positions, and the stem of first connecting portion of described bearing pin and described back one first chain link and the stem of the described first load-bearing ear are connected.

Further, the pars intermedia of the pars intermedia of described first connecting portion and described second connecting portion connects with the described steel plate that is connected respectively, and the pars intermedia of the pars intermedia of described first connecting portion and described second connecting portion all is positioned at described the same side that is connected steel plate; Along the direction of depressing of straightening machine roller, described connection steel plate equates that with the top and the bottom distance of the described first load-bearing ear described connection steel plate equates with the top and the bottom distance of the described second load-bearing ear.

Further, the pars intermedia of the pars intermedia of described first connecting portion and described second connecting portion connects with the described steel plate that is connected respectively, and the pars intermedia of the pars intermedia of described first connecting portion and described second connecting portion all is positioned at described the same side that is connected steel plate; Along the direction of depressing of straightening machine roller, the top of described connection steel plate and the described first load-bearing ear and bottom distance are unequal, and the top of described connection steel plate and the described second load-bearing ear and bottom distance are unequal.

Further, the pars intermedia of the pars intermedia of described first connecting portion and described second connecting portion connects with the described steel plate that is connected by bolt respectively, and described bolt also is provided with the shearing resistance cover with described the connection between the steel plate.

Further, the two ends of described bearing pin also are provided with the circlip that prevents described bearing pin axial float.

Further, the stem of the stem of the described first load-bearing ear and the second load-bearing ear is provided with the pin-and-hole that moves back that withdraws from described bearing pin.

Further, the degree of depth in described waist hole is greater than the thickness of the afterbody of the afterbody of described second connecting portion or described first connecting portion.

Further, the degree of depth in described waist hole is greater than the thickness of the afterbody of the afterbody of described second connecting portion or described first connecting portion more than one times.

Further, above described connection steel plate, form the bending gap between the end of the end of the described first load-bearing ear and the second load-bearing ear, below described connection steel plate, do not have the bending gap between the end of the end of the described first load-bearing ear and the second load-bearing ear.

Further, the described bending gap supreme increased space gradually of serving as reasons down.

Further, above described connection steel plate, described bending gap is the angle that forms between the end face of the end face of the described first load-bearing ear and the second load-bearing ear.

Further, above described connection steel plate, the end face of the described first load-bearing ear is vertical with horizontal plane, the end face of the described second load-bearing ear is and angled domatic of horizontal plane, below described connection steel plate, the end face of the described first load-bearing ear is vertical with horizontal plane, and the end face of the described second load-bearing ear is vertical with horizontal plane.

Because in the dummy bar of the present utility model, the load receiving part that bears straightening machine roll pressure is not provided with the waist hole, the pressure of straightening machine roller directly acts on the load receiving part, because load receiving part is not provided with the waist hole, so, load receiving part can bear bigger pressure, simultaneously, the pressure of straightening machine roller is not directly born in waist hole in the connecting portion, the pressure of most of straightening machine roller is born by load receiving part, thereby the suffered pressure in the waist hole in the connecting portion is less, and the suffered pressure of connecting portion is also less, and connecting portion can not be out of shape easily.Owing to the existence of this bearing pin, under the situation that connects the steel plate fracture, still can dummy bar be pulled out from casting machine, thereby avoid bigger loss simultaneously by the help of bearing pin.Under can the situation of the horizontal changing of the relative positions in guaranteeing the waist hole of bearing pin in connecting portion, flexible dummy bar of the present utility model is solid firmly, and be not yielding, long service life.

Description of drawings

Fig. 1 is the main TV structure schematic diagram of existing first kind of dummy bar;

Fig. 2 is the plan structure schematic diagram of Fig. 1 a, has wherein removed straightening machine roller;

Fig. 3 is the main apparent direction sectional structure schematic diagram of the adjacent link of existing first kind of dummy bar;

Fig. 4 is the plan structure schematic diagram of Fig. 3;

Fig. 5 is the A-A place sectional structure schematic diagram of Fig. 3;

Fig. 6 is the plan structure schematic diagram that the single chain link of existing first kind of dummy bar is connected with bearing pin;

Fig. 7 is the main TV structure schematic diagram of the chain link of existing second kind of dummy bar;

Fig. 8 is the plan structure schematic diagram of the chain link of existing second kind of dummy bar;

Fig. 9 is the main TV structure schematic diagram according to first kind of dummy bar of the utility model embodiment;

Figure 10 is the plan structure schematic diagram according to first kind of dummy bar of the utility model embodiment;

Figure 11 is the side-looking structural representation according to the adjacent link of first kind of dummy bar of the utility model embodiment;

Figure 12 is the plan structure schematic diagram according to the adjacent link of first kind of dummy bar of the utility model embodiment;

Figure 13 is the structural representation of first chain link among Figure 12;

Figure 14 is the structural representation of second chain link among Figure 12;

Figure 15 is the B-B place sectional structure schematic diagram of Figure 11;

Figure 16 is the C-C place sectional structure schematic diagram of Figure 12;

Figure 17 is the side-looking structural representation according to the chain link of second kind of dummy bar of the utility model embodiment;

Figure 18 is the plan structure schematic diagram according to the chain link of second kind of dummy bar of the utility model embodiment;

Figure 19 is the structural representation of first chain link among Figure 18;

Figure 20 is the structural representation of second chain link among Figure 18;

Figure 21 is the D-D place sectional structure schematic diagram of Figure 17;

Figure 22 is the E-E place sectional structure schematic diagram of Figure 18.

The drawing reference numeral explanation:

1, chain link 2, connection steel plate 3, bearing pin 4, shearing resistance cover 5, bolt

6, nut 7, circlip 8, waist hole 9, straightening machine roller 11, preceding chain link 13, back chain link

111, the load-bearing ear 21 of the load-bearing ear 131 of preceding chain link, back chain link, preceding chain link 23, back chain link

22, connect steel plate 24, shearing resistance cover, 25, bolt 26, nut 27, joint component 30, bending gap

31, first chain link 32, connection steel plate 33, bearing pin 34, shearing resistance cover, 35, bolt 36, nut

37, circlip 38, screw 39, second chain link

311, the afterbody 313 of the stem 315 of the first load-bearing ear, the first load-bearing ear, the stem of first connecting portion

316, the afterbody 319 of the pars intermedia 317 of first connecting portion, first connecting portion, second side of the first load-bearing ear

3191, the lower end of second side of the end face 3,193 first load-bearing ears of second side of the first load-bearing ear

390, move back the stem 393 of pin-and-hole 391, the second load-bearing ear, the stem of second connecting portion

395, the pars intermedia 397 of the afterbody 396 of the second load-bearing ear, second connecting portion, the afterbody of second connecting portion

399, the lower end of second side of the end face 3,993 second load-bearing ears of second side of second side 3991 of the second load-bearing ear, the second load-bearing ear

The specific embodiment

Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.

Fig. 9 to Figure 16 shows first kind of flexible dummy bar of the present utility model and internal structure thereof, wherein, extremely shown in Figure 10 as Fig. 9, the utility model proposes a kind of flexible dummy bar, wherein, described dummy bar comprises: a plurality of chain links be connected steel plate 32, but between the adjacent link along the changing of the relative positions of described flexible dummy bar direct of travel be hinged, described connection steel plate covers on the described chain link and with described chain link and is connected; The load receiving part that bears straightening machine roll pressure is arranged in two adjacent link with the connecting portion that is connected with described load receiving part, described load receiving part stretches out from described connecting portion along the direction that supports described straightening machine roller and contacts with described straightening machine roller, described connecting portion connects described adjacent link, be provided with the waist hole in the described connecting portion, the length direction in described waist hole is consistent with described flexible dummy bar direct of travel, but adjacent two chain links are hinged with locating the changing of the relative positions in described waist hole.

To shown in Figure 12, a plurality of chain links are respectively first chain link 31 and second chain link 39 by one or more two adjacent chain links as Figure 11, are connected successively to form.For example, the afterbody of first chain link 31 is connected with the stem of second chain link 39, and the afterbody of second chain link 39 is connected with the stem of next first chain link 31 again, so alternately connects.But between the adjacent link along the changing of the relative positions of described flexible dummy bar direct of travel be hinged, for example, second chain link 39 and first chain link 31 by waist hole 8 can the relative changing of the relative positions hinged, whole dummy bar alternately is connected to form successively by a plurality of first chain links 31 and second chain link 39.Owing to form the hinged of the relative changing of the relative positions at least between the adjacent link unit, connect steel plate when the relative changing of the relative positions of chain link, strain takes place, dummy bar thereby can form flexibly connects, and can upwards form suitably crooked according to designing requirement.

The annexation of first chain link 31 and second chain link 39 is described below.

First chain link 31 all is connected with bearing pin 33 by being connected steel plate 32 with second chain link 39, connecting steel plate 32 covers on first chain link 31 and second chain link 39, in dummy bar work, because the effect of the pressure of straightening machine roller, connect steel plate 32 strain can take place, connecting the steel plate 32 and first chain link 31 and second chain link 39 can be for being spirally connected, and concrete connection can be with reference to prior art.First chain link 31 and second chain link 39 are realized hinged by bearing pin 33, can relatively rotate within the regime of elastic deformation that connects steel plate 32, so that dummy bar integral body can be bent upwards.First chain link 31 will have the structure that cooperatively interacts and be connected with second chain link 39, and alternately to be connected to form dummy bar, wherein, the appellation of first chain link 31 and second chain link 39 is comparatively speaking.

Described bearing pin 33 is arranged on outside the described connection steel plate 32, and as Figure 15 and shown in Figure 16, described bearing pin 33 is arranged on the downside of described connection steel plate 32, can be provided with by parallel connection steel plate 32, connects steel plate 32 and covers on first chain link 31 and second chain link 39.

As Figure 14 and shown in Figure 15, wherein second chain link 39 comprises: be connected the second connecting portion (afterbody 397 that comprises second connecting portion that steel plate 32 is connected with described, the stem 393 of second connecting portion, with pars intermedia 396 of second connecting portion etc.) and second load receiving part that bears described straightening machine roll pressure (stem 391 that comprises the second load-bearing ear) that stretches out from described second connecting portion, as shown in figure 16, be provided with waist hole 8 in described second connecting portion, for example, be provided with waist hole 8 in the stem 393 of second connecting portion, in Figure 16, waist hole 8 (being elongated hole) up and down for the straight horizontal line segment, about be circular arc, be semicircle for example, the straight horizontal line segment is connected with semicircle is tangent; Described bearing pin 33 passes in the waist hole 8 that is located at second connecting portion, make bearing pin 33 can be in waist hole 8 the horizontal changing of the relative positions but can not produce the changing of the relative positions up and down, but be bearing pin 33 with described second chain link 39 be connected to along the changing of the relative positions of described flexible dummy bar direct of travel be hinged (the horizontal changing of the relative positions hinged), described bearing pin 33 passes first chain link 31 simultaneously, the bearing pin 33 and first chain link 31 be connected to common being connected, be the bearing pin 33 and first chain link 31 be connected to along described flexible dummy bar direct of travel can not the changing of the relative positions hinged, for example can for fixedly connected (for example be interference fit or matched in clearance by a small margin, with respect to the hinged of the horizontal changing of the relative positions (for example is 5mm, the changing of the relative positions amount of 6mm or 7mm), can ignore in the gap of this cooperation, for example the gap of Pei Heing is in 1mm or the 1mm, being connected hereinafter all is meant such connected mode), being connected of bearing pin 33 and first chain link 31 can fixedly connected (for example being interference fit) or matched in clearance by a small margin (bearing pin 33 and first chain link 31 for along the not changing of the relative positions of described flexible dummy bar direct of travel hinged), making wins can only and can not produce by the 8 horizontal changing of the relative positions of waist hole between the chain link 31 and second chain link 39 about the changing of the relative positions.As long as the slit of the junction of the bearing pin 33 and first chain link 31 can not influence the intensity of junction, suitable slit allows, and like this, also helps the rotation of first chain link 31 with respect to second chain link 39, increases the flexibility of dummy bar.

Because in the utility model, be provided with connecting portion in adjacent two chain links, be provided with waist hole 8 in the connecting portion (second connecting portion), and in the chain link syndeton of the present utility model, the load receiving part that bears straightening machine roll pressure is not provided with the waist hole, the pressure of straightening machine roller directly acts on the load receiving part, the pressure of straightening machine roller is not directly born in waist hole 8 in the connecting portion, the pressure of straightening machine roller is born by load receiving part, thereby the suffered power in the waist hole in the connecting portion is less, the suffered power of connecting portion is also less, and connecting portion can not be out of shape easily.Owing to the existence of this bearing pin 33, under the situation that connects steel plate 32 fractures, still can dummy bar be pulled out from casting machine, thereby avoid bigger loss simultaneously by the help of bearing pin 33.Under can the situation of the horizontal changing of the relative positions in guaranteeing the waist hole of bearing pin in connecting portion, chain link syndeton of the present utility model and flexible dummy bar are solid firmly, and be not yielding, long service life.

In view of the appellation of first chain link 31 and second chain link 39 is comparatively speaking, the chain link syndeton has load receiving part that bears straightening machine roll pressure and the connecting portion that is connected with described load receiving part, described load receiving part stretches out from described connecting portion, is provided with in the described connecting portion to be fit to the waist hole that bearing pin passes.

Further, as shown in figure 15, load receiving part (comprising the afterbody 315 of the first load-bearing ear, the stem 391 of the second load-bearing ear) will be given prominence to connecting plate 32 and be provided with, in Figure 15, load receiving part is higher than and connects steel plate 32 settings, so that during the depressing of straightening machine roller 9, thereby directly support the immense pressure that straightening machine roller 9 makes miscellaneous parts such as connecting steel plate 32 and connecting portion no longer directly bear straightening machine roller by load receiving part, therefore, load receiving part can be provided with suitable shape for various outstanding connecting plates 32, for example is projection.Connecting portion can be convenient to connect each chain link by bolt 35 for tabular.As Figure 13 and shown in Figure 14, load receiving part can be positioned at connecting portion a side and can be from the up and down outstanding connecting portion setting of both direction.The above-mentioned shape of load receiving part and connecting portion is convenient to make and processing.Preferably, as shown in figure 16, connecting portion (for example, the stem 393 of second connecting portion) is for edge has outstanding structure, so that strengthen the intensity of junction.

Further, each chain link all has connecting portion and load receiving part, like this, can make each chain link stressed uniform and stable.As shown in figure 13, described first chain link 31 comprises: with described first connecting portion that steel plate 32 is connected and the first load-bearing ear that stretches out from described first connecting portion of being connected, the direction of depressing along straightening machine roller 9, the described first load-bearing ear is given prominence to the first connecting portion setting, and described bearing pin passes described first connecting portion and the described first load-bearing ear; Second chain link 39 comprises: with described second connecting portion that steel plate is connected and the second load-bearing ear that stretches out from described second connecting portion of being connected, along the direction of depressing of straightening machine roller, the described second load-bearing ear is given prominence to the second connecting portion setting; Described waist hole is arranged in described second connecting portion.Preferably, described load receiving part is the load-bearing ear, and promptly described load receiving part is a lug, in order to alleviate the weight of chain link syndeton, under the situation of proof strength, can dig out some grooves on the load receiving part.Above-mentioned each load receiving part or each connecting portion have suitable load-bearing and shape that is connected and structure respectively, and for example, above-mentioned each load receiving part or each connecting portion can be block or tabular or its combination, but are not limited to these shapes.

Further, as shown in figure 13, described first connecting portion comprises: the stem 313 of first connecting portion, the pars intermedia 316 of first connecting portion and the afterbody 317 of first connecting portion, the described first load-bearing ear comprises: the stem 311 of the interconnective first load-bearing ear and the afterbody 315 of the first load-bearing ear, the stem 313 of described first connecting portion is connected with the pars intermedia 316 of the afterbody 317 of described first connecting portion by described first connecting portion, and the stem 313 of described first connecting portion and the afterbody 317 of described first connecting portion are connected the described first load-bearing ear by the pars intermedia 316 of described first connecting portion.The stem 311 of the first load-bearing ear and the afterbody 315 of the first load-bearing ear can be connected as a single entity structure, the top of the top of the stem 311 of the first load-bearing ear and the afterbody 315 of the first load-bearing ear can be linked to be horizontal plane to bear the pressure of straightening machine roller, in addition, the first load-bearing ear can also be sided configuration, promptly the offside of the afterbody 315 of the stem 311 of the first load-bearing ear and the first load-bearing ear (second side 319 of the first load-bearing ear) also is the load-bearing ear structure, also bear the pressure of straightening machine roller, like this, can all carry on a shoulder pole the pressure of straightening machine roller.

As shown in figure 14, described second connecting portion comprises: the stem 393 of second connecting portion, the pars intermedia 396 of second connecting portion and the afterbody 397 of second connecting portion, the described second load-bearing ear comprises: the stem 391 of the interconnective second load-bearing ear and the afterbody 395 of the second load-bearing ear, the stem 393 of described second connecting portion and the afterbody 397 of described second connecting portion are connected the described second load-bearing ear by the pars intermedia 396 of described second connecting portion.The stem 391 of the second load-bearing ear and the afterbody 395 of the second load-bearing ear can be connected as a single entity structure, the top of the top of the stem 391 of the second load-bearing ear and the afterbody 395 of the second load-bearing ear can be linked to be horizontal plane to bear the pressure of straightening machine roller, in addition, the second load-bearing ear can also be sided configuration, promptly the offside of the afterbody 395 of the stem 391 of the second load-bearing ear and the second load-bearing ear (second side 399 of the second load-bearing ear) also is the load-bearing ear structure, also bear the pressure of straightening machine roller, like this, can all carry on a shoulder pole the pressure of straightening machine roller.

The each several part of above-mentioned each load receiving part or each connecting portion has suitable load-bearing and shape that is connected and structure respectively, and for example, the each several part of above-mentioned each load receiving part or each connecting portion can be block or tabular or its combination, but is not limited to these shapes.

As Figure 13, Figure 14 and shown in Figure 15, the stem 313 of described first connecting portion has the structure between the afterbody 395 of the afterbody 397 that is folded in described second connecting portion and the described second load-bearing ear; The afterbody 317 of described first connecting portion has the structure between the stem 391 of the stem 311 that is folded in described second connecting portion and the described second load-bearing ear; The stem 393 of described second connecting portion has the structure between the afterbody 315 of the afterbody 317 that is folded in described first connecting portion and the first load-bearing ear; The afterbody 397 of described second connecting portion has the structure between the stem 313 of the stem 311 that is folded in the described first load-bearing ear and first connecting portion.Such structure can be connected the stem of the chain link 31 of winning with the afterbody of second chain link 39, and the afterbody of first chain link 31 can be connected with the stem of second chain link 39, and first chain link 31 and second chain link 39 alternately are connected to form dummy bar.In addition, said structure make win chain link 31 and second chain link 39 along interlock mutually on the dummy bar length direction, cooperates compact, bonding strength is high, also be convenient to dismounting simultaneously, install and replacing.

As Figure 13 and shown in Figure 14, described waist hole 8 is arranged on the stem of connecting portion, and for example, waist hole 8 is arranged on the stem 393 of described second connecting portion and the stem 313 of first connecting portion.The first connecting portion stem 313 at described first chain link 31, described bearing pin 33 pass the afterbody 395 of the described second load-bearing ear and the afterbody 397 of second connecting portion (afterbody 395 of the second load-bearing ear and the afterbody 397 of second connecting portion be provided with bearing pin 33 form can not the changing of the relative positions hinged mating holes) and (for example be connected with the afterbody 395 of the described second load-bearing ear and the afterbody 397 of second connecting portion, by interference ways of connecting or hinged along the not changing of the relative positions on the dummy bar length direction), but described bearing pin 33 passes waist hole 8 and hinged with stem 313 changing of the relative positions of described first connecting portion in the stem 313 of described first connecting portion, but makes being connected of described bearing pin and 31 changing of the relative positions of described first chain link (can the changing of the relative positions hinged).

At the afterbody of described first chain link 31, i.e. the stem of second chain link 39, to shown in Figure 16, described bearing pin 33 passes the described waist hole 8 in the stem 393 of described second connecting portion as Figure 13; The first connecting portion afterbody 317 of described bearing pin 33 and described first chain link 31 is for (for example being connected, by interference ways of connecting or hinged along the not changing of the relative positions on the dummy bar length direction), for example, described bearing pin 33 pass the afterbody 315 of the afterbody 317 of described first connecting portion and the first load-bearing ear and form the not changing of the relative positions mutually hinged (afterbody 317 of first connecting portion and the afterbody 315 of the first load-bearing ear be provided with bearing pin 33 form can not the changing of the relative positions hinged mating holes), in addition, described bearing pin 33 passes the described waist hole 8 in the stem 393 of described second connecting portion, but being connected of stem 393 changing of the relative positions of described bearing pin 33 and second connecting portion (hinged), but make being connected of described bearing pin and described second chain link 39 changing of the relative positions.Like this, afterbody at described first chain link 31, described first chain link 31 and described second chain link 39 changing of the relative positions mutually, formation flexibly connects, stem at described first chain link 31, described first chain link 31 and the also changing of the relative positions mutually of described second chain link 39 promptly in the junction of adjacent two chain links, but all are the hinged of the changing of the relative positions between adjacent two chain links.Like this, can both guarantee the flexibility of dummy bar.

Figure 17 to Figure 22 shows second kind of dummy bar and chain link syndeton thereof.The main distinction of second kind of dummy bar and chain link syndeton and foregoing first kind of dummy bar and chain link syndeton thereof is, waist hole 8 is arranged on the afterbody of each chain link, for example, waist hole 8 is arranged on the afterbody of first chain link 31 and second chain link 39, adaptive being connected carried out in relevant connection place of first chain link 31 and second chain link 39, and these two kinds of dummy bar structures of other aspects in addition are similar.

As Figure 19 and shown in Figure 20, described waist hole 8 is arranged in the afterbody 317 of afterbody 397 neutralization first connecting portion of described second connecting portion; Stem at described first chain link, but the described waist hole 8 that described bearing pin 33 passes in the afterbody 397 of second connecting portion is hinged with forming the changing of the relative positions, simultaneously, described bearing pin 33 passes the stem 311 of the described first load-bearing ear and the stem 313 of first connecting portion, be hinged with forming the not changing of the relative positions, but make being connected of described bearing pin and described second chain link 39 changing of the relative positions.Bearing pin 33 is as Figure 21 and shown in Figure 22, afterbody at described first chain link, described bearing pin and described second chain link 39 be connected (along the not changing of the relative positions of described flexible dummy bar direct of travel be hinged), for example, described bearing pin passes the stem 391 of the described second load-bearing ear and the stem 393 of described second connecting portion, be hinged with forming the not changing of the relative positions, described bearing pin passes the waist hole 8 in the afterbody 317 of described first connecting portion, but be hinged with forming the changing of the relative positions, but make being connected of described bearing pin and described first chain link 31 changing of the relative positions.Wherein, described first chain link 31 and described second chain link 39 also take to be similar to the mutual interlock of form of first kind of dummy bar and chain link syndeton thereof, and effect is identical with first kind of dummy bar and chain link syndeton thereof.

Like this, in the stem of described first chain link 31, described first chain link 31 and described second chain link 39 changing of the relative positions mutually, formation flexibly connects, at the afterbody of described first chain link 31, described first chain link 31 and the also changing of the relative positions mutually of described second chain link 39, formation flexibly connects.Equally, said structure also can guarantee the intensity of dummy bar as far as possible under this primary condition of the flexibility that can both guarantee dummy bar.

Further, as Figure 16 and shown in Figure 22, the pars intermedia 316 of described first connecting portion connects with the described steel plate 32 that is connected respectively with the pars intermedia 396 of described second connecting portion, and the pars intermedia 316 of described first connecting portion all is positioned at described the same side that is connected steel plate 32 with the pars intermedia 396 of described second connecting portion, for example is arranged in the downside that is connected steel plate 32 as Figure 16 with Figure 22; The direction of depressing along straightening machine roller, described connection steel plate 32 equates with the top and the bottom distance of the described first load-bearing ear, described connection steel plate equates with the top and the bottom distance of the described second load-bearing ear, promptly connect the direct position that steel plate 32 is positioned at each chain link, it is reasonably stressed that waist hole 8 is born, and increases the intensity of junction.Connecting steel plate 32 according to the structure needs also can adjust up or down.

Further, as Figure 15 and shown in Figure 21, the pars intermedia 316 of described first connecting portion connects with the described steel plate 32 that is connected by bolt 35, nut 36 respectively with the pars intermedia 396 of described second connecting portion.Because the pars intermedia 316 of described first connecting portion and the pars intermedia 396 of described second connecting portion do not wear bearing pin 33, with the described junction that is connected between the steel plate 32 enough bonding strengths are arranged so can guarantee each chain link.Described bolt 35 also is provided with shearing resistance cover 34 with described the connection between the steel plate 32.The two ends of described bearing pin 33 also are provided with the circlip 37 that prevents described bearing pin 33 axial floats.Like this, the connection that can guarantee each chain link is stablized.

Further, as Figure 15 and shown in Figure 21, the afterbody 395 of the described second load-bearing ear or the stem 391 of the described second load-bearing ear be provided with withdraw from described bearing pin move back pin-and-hole 390.Since bearing pin with locate waist hole 8 outside first chain link 31 is connected with second chain link 39 and is generally interference connection, in order to load and unload bearing pin 33 easily, move back pin-and-hole 390 so be provided with, in addition, as shown in figure 15, can also be provided for loading and unloading the screw 38 of bearing pin 33.

Further, in first kind of dummy bar and the chain link syndeton thereof, as shown in figure 14, the degree of depth in described waist hole 8 like this, meets the equal strength design greater than the afterbody 397 of second connecting portion.As shown in figure 15, the depth d 1 in described waist hole 8 is greater than the thickness d 2 of the afterbody 317 of described first connecting portion, like this, at 8 places, waist hole, second chain link 39 is on the basis of the design that reduces to bear straightening machine roll pressure, keeping on first chain link 31 and second chain link, the 39 integral thickness basis of invariable again, strengthen second chain link, 39 intensity at 8 places, waist hole by the ratio that on the degree of depth, increases waist hole 8, simultaneously, stressed between the afterbody 317 of also balanced first connecting portion and the stem 393 of second connecting portion makes whole chain link syndeton stressed even.

Further, the degree of depth in described waist hole 8 is greater than the thickness of the afterbody 317 of described first connecting portion more than one times, and more than one times, like this, whole chain link syndeton is stressed more even greater than the thickness of the afterbody 397 of second connecting portion for the degree of depth in described waist hole 8.Preferably, the depth d 1 in described waist hole 8 is 7: 3 with the ratio of the thickness d 2 of the afterbody 317 of described first connecting portion, and whole chain link syndeton is stressed comparatively reasonable, and each chain link is stressed uniform and stable, can the concentrated stressing conditions of proof stress.In like manner, second kind of flexible dummy bar and chain link syndeton thereof, the proportionate relationship of the degree of depth (i.e. the width of the afterbody 397 of second connecting portion) that also can make 8 places, waist hole and the proportionate relationship of the stem 313 of described first connecting portion and first kind of flexible dummy bar and chain link syndeton thereof is identical.

Further, as shown in figure 22, the thickness of the afterbody 397 of second connecting portion is h1+h2, thickness h 1 greater than the pars intermedia 396 of second connecting portion, just there has been the bending of the pars intermedia 396 that protrudes in second connecting portion at afterbody 397 places of second connecting portion, with the thickness of the afterbody 397 of second connecting portion that guarantees 8 places, waist hole, thereby guarantee the bonding strength at 8 places, waist hole.In like manner, first kind of flexible dummy bar and chain link syndeton thereof also have similar structures.Like this, the utility model further strengthens the bonding strength at 8 places, waist hole by width and the thickness that strengthens waist hole 8 place's connecting portions on the basis of reducing the design that 8 places, waist hole are subjected to straightening machine roll pressure.

Further, as Figure 16 and shown in Figure 22, above described connection steel plate 32, the end of the described first load-bearing ear (for example, the end of second side 319 of the first load-bearing ear) with the end of the second load-bearing ear (for example, the end of second side 399 of the second load-bearing ear) forms bending gap 30 between, below described connection steel plate 32, there is not the bending gap between the end (lower end 3993 of second side 399 of the first load-bearing ear) of the end of the described first load-bearing ear (lower end 3193 of second side 319 of the first load-bearing ear) and the second load-bearing ear, for example, the two is fitted mutually or fits basically.

At work, being bent upwards that dummy bar is suitable allows, and when dummy bar is bent upwards, connects steel plate 32 certain deformation takes place, owing to have bending gap 30 above described connection steel plate 32, the load-bearing ear of former and later two chain links can be bent upwards along bending gap 30 and reach certain amplitude; Below described connection steel plate 32, there is not the bending gap between the load-bearing ear of former and later two chain links, certain distance is drawn back in the changing of the relative positions that former and later two links of described connection steel plate 32 belows are crossed in the waist hole, to cooperate former and later two chain links to be bent upwards, former and later two chain links of changing of the relative positions amount in the waist hole have reclinate trend if this distance of drawing back is subject to two chain links, so, there is not the bending gap owing to connect steel plate 32 belows, thereby stop former and later two chain links further close mutually, thereby stop former and later two chain links that downward bending is arranged.In addition, common bearing pin 33 (bearing pin installation site in the waist hole) when beginning to install, right-hand (promptly being arranged in the end of waist hole) near the stem 393 of second connecting portion away from first chain link 31, be positioned at the extreme position in waist hole, bearing pin 33 can only be toward moving left, can not move right again, be that bearing pin 33 can only cooperate former and later two chain links to be bent upwards and limit and is bent downwardly, below described connection steel plate 32, former and later two chain links (comprising the load-bearing ear) changing of the relative positions to the right again, if former and later two chain links have reclinate trend, so, bearing pin 33 can not allow the mutual changing of the relative positions of former and later two chain links yet.Like this, can make former and later two chain links to be bent upwards and can not be bent downwardly, guarantee the performance of dummy bar.

Figure 16 and Figure 22 have described the structure of second side of former and later two chain link load-bearing ears, and the structure of the opposite side of former and later two chain link load-bearing ears and the structure of second side are similar, and effect is identical.In addition, among Figure 16, bearing pin 33 is when beginning to install, and right-hand near the stem 393 of second connecting portion also has position-limiting action, prevents that former and later two chain links are bent downwardly.When former and later two chain links were bent upwards, bearing pin 33 can the changing of the relative positions in waist hole 8, remedies crooked amplitude.In like manner, the effect of the bearing pin of Figure 22 similarly.

Therefore, the form fit of the load-bearing ear of the utility model by former and later two chain links realizes the control to bending direction, and is relatively simple for structure, need not to establish parts in addition and controls, and simplifies the dummy bar overall structure, reduces cost.

Further, as Figure 16 and shown in Figure 22, the described bending gap 30 supreme increased space gradually of serving as reasons down.Like this, helping former and later two chain links is bent upwards smoothly.

Further, above described connection steel plate 32, described bending gap 30 is the angle that forms between the end face 3991 of the end face 3191 of the described first load-bearing ear and the second load-bearing ear.This angle supreme increased space gradually of serving as reasons down.Like this, easy to make.

Further, above described connection steel plate 32, the end face 3191 of the described first load-bearing ear is vertical with horizontal plane, the end face 3991 of the described second load-bearing ear is and angled domatic of horizontal plane, and described bending gap 30 is the angle that forms between the end face 3991 of the end face 3191 of the described first load-bearing ear and the second load-bearing ear.Below described connection steel plate 32, the end face of the described first load-bearing ear is vertical with horizontal plane, and the end face of the described second load-bearing ear is vertical with horizontal plane, and the load-bearing ear of former and later two chain links is fitted mutually or fitted basically.Like this, make more convenient, better effects if.

Operation principle of the present utility model is: with first kind of flexible dummy bar is example, as Fig. 9 and shown in Figure 10, whole dummy bar is when work, move along the left and right directions among the figure, each links is crossed the connection steel plate and is connected with bearing pin, when through straightening machine roller, each load-bearing earpiece is subjected to the pressure of straightening machine roller, owing in the load-bearing ear waist hole is not set, so, the load-bearing ear can bear bigger pressure, and the connecting portion that the waist hole is set does not directly bear the pressure of straightening machine roller, and the pressure of straightening machine roller is by load-bearing earpiece load, thereby the suffered power in the waist hole in the connecting portion is less, the suffered pressure of connecting portion is also less, and connecting portion can not be out of shape easily.Owing to the existence of this bearing pin, under the situation that connects the steel plate fracture, still can dummy bar be pulled out from casting machine simultaneously by the help of bearing pin.The utility model has solved bearing pin junction strength reduction problem, the situation of whole dummy bar fracture when also preventing from simultaneously to connect the steel plate fracture.

The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.For each part of the present utility model can make up under the condition of not conflicting mutually; any those skilled in the art; equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.

Claims

1. A flexible dummy bar, characterized in that, the dummy bar includes: a plurality of chain links and connecting steel plates, and adjacent chain links are staggeredly hinged to each other along the traveling direction of the flexible dummy bar, The connecting steel plate is covered on the chain link and connected with the chain link;

The load-bearing part bearing the pressure of the rollers of the tension leveler and the connection part connected with the load-bearing part are arranged in the two adjacent chain links, and the load-bearing part is arranged in the direction of supporting the rollers of the tension leveler from the connection part stretch out and contact with the rollers of the tension leveling machine, the connecting part connects the adjacent chain links, the connecting part is provided with a waist hole, the length direction of the waist hole is in line with the traveling direction of the flexible dummy bar Consistently, two adjacent chain links are staggerably hinged to each other at the waist hole.

2. The flexible dummy bar according to claim 1, wherein the two adjacent chain links comprise:

the hinged first link and the second link;

The connection part includes: a first connection part, the first connection part is arranged in the first chain link; a second connection part, the second connection part is arranged in the second chain link, the Both the first connecting portion and the second connecting portion are connected to the connecting steel plate;

The bearing part includes: a first bearing part, the first bearing part is arranged in the first chain link; a second bearing part, the second bearing part is arranged in the second chain link, the The first load-bearing part protrudes from the first connection part along the direction of supporting the tension-leveler roller and contacts with the tension-leveler roller, and the second load-bearing part supports the tension-leveler roller from the second connection part along the The direction of the tension leveler rollers protrudes and contacts said tension leveler rollers;

The waist hole is arranged in the first connecting part and the second connecting part, and at the waist hole, the first connecting part and the second connecting part are staggered through the pin shaft are hinged to each other, and the pin shaft is arranged on one side of the connecting steel plates.

3. The flexible dummy rod according to claim 2, characterized in that,

The load-bearing portion is a load-bearing ear, and the load-bearing ear includes a first load-bearing ear and a second load-bearing ear;

The first chain link includes: the first connecting portion connected to the connecting steel plate and the first load-bearing ear protruding from the first connecting portion, along the pressing direction of the rollers of the tension leveler, the The first load-bearing ear protrudes from the first connection part, and the pin shaft passes through the first connection part and the first load-bearing ear;

The second chain link includes: the second connecting portion and the second load-bearing ear, and the second load-bearing ear protrudes from the second connecting portion along the pressing direction of the tension leveler roller.

4. The flexible dummy bar of claim 3, wherein:

The first connection part includes: the head of the first connection part, the middle part of the first connection part and the tail part of the first connection part, and the first load-bearing ear includes: the head of the first load-bearing ear and the first load-bearing ear connected to each other The tail of the load-bearing ear, the head of the first connecting part and the tail of the first connecting part are connected to the first load-bearing ear through the middle part of the first connecting part;

The second connection part includes: the head part of the second connection part, the middle part of the second connection part and the tail part of the second connection part, and the second load-bearing ear includes: the head part and the second load-bearing ear of the second load-bearing ear connected to each other. The tail of the load-bearing ear, the head of the second connecting part and the tail of the second connecting part are connected to the second load-bearing ear through the middle part of the second connecting part;

The head portion of the first connecting portion has a structure sandwiched between the tail portion of the second connecting portion and the tail portion of the second bearing ear;

The tail of the first connecting part has a structure sandwiched between the head of the second connecting part and the head of the second bearing ear;

The head portion of the second connecting portion has a structure sandwiched between the tail portion of the first connecting portion and the tail portion of the first bearing ear;

The tail portion of the second connection portion has a structure sandwiched between the head portion of the first bearing ear and the head portion of the first connection portion.

5. The flexible dummy bar according to claim 4, characterized in that,

The waist hole is set at the head of the first connecting part and the head of the second connecting part;

At the head of the first chain link, the pin shaft passes through the waist hole of the head of the first connecting part and the tail of the second connecting part of the second chain link and the matching hole at the tail of the second load-bearing part , the pin shaft is staggerably connected with the first chain link, and the pin shaft is mated with the tail of the second connecting part of the second chain link and the tail of the second bearing ear;

At the head of the second chain link, the pin shaft passes through the waist hole of the head of the second connecting part and the matching hole at the tail of the first connecting part of the first chain link and the tail of the first bearing ear , the pin shaft is staggerably connected to the second chain link, and the pin shaft is matingly connected to the tail of the first connecting part of the first chain link and the tail of the first bearing ear.

6. The flexible dummy bar of claim 4, wherein:

The waist hole is arranged at the tail of the connecting part;

At the tail part of the first chain link, the pin shaft passes through the waist hole of the tail part of the first connecting part and the cooperation between the head of the second bearing ear of the second chain link and the head of the second connecting part hole, the pin shaft is staggerably connected to the first chain link, and the pin shaft is matingly connected to the head of the second connecting part of the second chain link and the head of the second bearing ear;

At the tail of the second chain link, the pin shaft passes through the waist hole at the tail of the second connecting part and the head of the first connecting part and the head of the first bearing ear of the last first chain link The matching hole, the pin shaft is staggeredly connected with the second chain link, the pin shaft is connected with the head of the first connecting part of the last first chain link and the first load-bearing The heads of the ears fit together.

7. The flexible dummy rod according to claim 5 or 6, characterized in that,

The middle part of the first connecting part and the middle part of the second connecting part are respectively connected with the connecting steel plate, and the middle part of the first connecting part and the middle part of the second connecting part are both located at the the same side of the connecting steel plate;

Along the pressing direction of the rollers of the tension leveling machine, the distance between the connecting steel plate and the top end and the bottom end of the first bearing lug is equal, and the distance between the connecting steel plate and the top and bottom end of the second bearing lug is equal.

8. The flexible dummy rod according to claim 5 or 6, characterized in that,

Along the pressing direction of the rollers of the tension leveler, the distance between the connecting steel plate and the top end and the bottom end of the first bearing lug is not equal, and the distance between the connecting steel plate and the top and bottom end of the second bearing lug is not equal.

9. The flexible dummy rod according to claim 5 or 6, wherein the middle part of the first connecting part and the middle part of the second connecting part are respectively connected to the connecting steel plates by bolts, so A shear sleeve is also provided between the bolt and the connecting steel plate.

10. The flexible dummy rod according to claim 2, characterized in that, elastic retaining rings are provided at both ends of the pin shaft to prevent axial movement of the pin shaft.

11. The flexible dummy rod according to claim 4, characterized in that, the head of the first bearing lug and the head of the second bearing lug are provided with withdrawal holes for withdrawing from the pin shaft.

12. The flexible dummy bar according to claim 4, wherein the depth of the waist hole is greater than the thickness of the tail of the second connecting portion or the tail of the first connecting portion.

13. The flexible dummy bar according to claim 12, wherein the depth of the waist hole is more than twice the thickness of the tail of the second connecting part or the tail of the first connecting part.

14. The flexible dummy bar according to claim 9, characterized in that, above the connecting steel plate, a bending gap is formed between the end of the first bearing lug and the end of the second bearing lug. Below the connecting steel plate, there is no bending gap between the end of the first bearing lug and the end of the second bearing lug.

15. The flexible dummy rod according to claim 14, wherein the bending gap is a space gradually increasing from bottom to top.

16. The flexible dummy bar according to claim 15, characterized in that, above the connecting steel plate, the bending gap is formed between the end surface of the first bearing lug and the end surface of the second bearing lug angle.

17. The flexible dummy rod according to claim 16, characterized in that, above the connecting steel plate, the end surface of the first load-bearing lug is perpendicular to the horizontal plane, and the end surface of the second load-bearing lug is fixed to the horizontal plane. For the angled slope, under the connecting steel plate, the end surface of the first bearing lug is perpendicular to the horizontal plane, and the end surface of the second bearing lug is perpendicular to the horizontal plane.