A kind of horizontal loop
Technical field
The utility model belongs to the mechanism field of continuous hot galvanizing of steel strip unit, specifically, relates to a kind of horizontal loop for continuous hot galvanizing of steel strip unit.
Background technology
Usually be provided with the looper storing steel band at the entrance of galvanizing unit and outlet section, with in the reel change of Abrollhaspel and reeling machine, ensure that process section can with normal process speed continuous seepage.The usual structure of horizontal loop is relatively simple, and does not need tall and big factory building, but its length is longer, and the general horizontal chamber oven that coordinates uses.
Fig. 1 is the structural representation of the vertical view of the horizontal loop of prior art.As shown in Figure 1, horizontal loop comprises drive unit 28, reel 21, wireline 23, travelling block 13 and loop trolley 25, the front end of loop trolley 25 is provided with travelling block 13, the two ends of wireline 23 are separately fixed at the both sides of reel 21, and the middle part of wireline 23 is through the travelling block 13 be fixed on loop trolley 25, same steel band is looped around on loop trolley in pivotal mode, thus drive loop trolley 25 to seesaw by reel 21 folding and unfolding wireline 23, and then make steel band be looped around on loop trolley more or leave loop trolley by the motion of loop trolley 25 to enter in production process.
But, when arranging in the manner described above, the pulling force that reel 21 is subject to is larger, be unfavorable for the long-time running of unit like this, especially for entry loop, the two ends due to wireline 23 are fixed on the both sides of reel 21, when the entry loop in normal production is in full cover position, the stressed of reel 21 concentrates on middle part, and the moment of flexure that reel 21 is subject to is comparatively large, easily causes fatigue deformation and the damage of reel.
Utility model content
In order to the one or more problems in solving the problem, the utility model provides a kind of horizontal loop, and this horizontal loop structure is simple, and economically feasible, ensure that the high-speed stable running of Long Distances horizontal loop and decrease cost consumption.
To part set forth in the utility model general plotting and/or advantage in ensuing description, some will be clearly by describing, or can be learnt by the enforcement to the utility model general plotting.
According to one side of the present utility model, described horizontal loop comprises winding plant, wireline and loop trolley, loop trolley is driven to seesaw by winding plant folding and unfolding wireline, described horizontal loop also comprises: the first travelling block and the second travelling block, be symmetricly set on the both sides, front end of loop trolley, the relative position relation between each travelling block and loop trolley is all fixing; Fixed pulley, is fixed on winding plant between winding plant and loop trolley, wherein, wireline from the side of winding plant, coiling first travelling block, fixed pulley, the second travelling block being finally fixed on the opposite side of winding plant successively.
According to embodiment of the present utility model, described winding plant can comprise drive unit and reel, wireline can coiling on reel, make reel rotate folding and unfolding wireline by drive unit and drive loop trolley to seesaw.
According to embodiment of the present utility model, reel can be double hoisting reel, and described double hoisting reel can be distributed with grooving, wireline from grooving towards zygomorphy ground coiling or from the grooving of both sides towards middle part coiling symmetrically.
According to embodiment of the present utility model, described horizontal loop also can comprise carrying roller, and carrying roller can at the first travelling block with between the second travelling block and winding plant, for supporting the wireline of the first travelling block both sides and the second travelling block both sides.
According to embodiment of the present utility model, drive unit can comprise electric motor and step-down gear.
The moment of flexure that the horizontal loop that the utility model provides makes reel be subject to by the layout improving pulley and wireline is less, and optimize the stressed of wireline and reel, wireline stressed is kept to original half, translational speed becomes original twice, thus more economic wireline and step-down gear can be selected, reduce cost consumption, structure is simple, ensure that the high-speed stable running of Long Distances horizontal loop.
Accompanying drawing explanation
By the description carried out embodiment below in conjunction with accompanying drawing, these and/or other aspect of the present utility model and advantage will become clear and be easier to understand, wherein:
Fig. 1 is the structural representation of the vertical view of the horizontal loop of prior art;
Fig. 2 is the structural representation of the vertical view according to horizontal loop of the present utility model;
Fig. 3 is the structural representation of the front view of horizontal loop in Fig. 2.
Nomenclature:
21 is reel, and 23 is wireline, and 24 is carrying roller, and 25 is loop trolley, and 28 is drive unit, and 13 is the travelling block of prior art, and 22 is according to fixed pulley of the present utility model, and 26 is the first travelling block, and 27 is the second travelling block.
Embodiment
Be described in detail embodiment of the present utility model below, its sample table shows in the accompanying drawings.Be described to explain the utility model to embodiment below with reference to the accompanying drawings.
Fig. 2 is the structural representation of the vertical view according to horizontal loop of the present utility model; Fig. 3 is the structural representation of the front view of horizontal loop in Fig. 2.
Specifically describe according to horizontal loop of the present utility model referring to Fig. 2, Fig. 3.Horizontal loop comprises winding plant, wireline 23, loop trolley 25, first travelling block 26, second travelling block 27 and fixed pulley 22, winding plant comprises drive unit 28 and reel 21, wherein, reel 21 can be double hoisting reel, wireline 23 coiling is on reel 21, first travelling block 26, second travelling block 27 and fixed pulley 22 are all between reel 21 and loop trolley 25, first travelling block 26, second travelling block 27 is arranged on the both sides, front end of loop trolley 25 symmetrically, and the first travelling block 26, relative position relation between second travelling block 27 and loop trolley 25 is fixed, such as, each travelling block can all be fixed on loop trolley 25.Fixed pulley 27 is fixed on winding plant, and from the side of reel 21, successively, order coiling first travelling block 26, fixed pulley 22 and the second travelling block 27 are also finally fixed on the opposite side of reel 21 wireline 23.Make reel 21 rotate folding and unfolding wireline 23 by drive unit 28, and then drive loop trolley 25 to seesaw together with two travelling block 26,27.
In the present embodiment, double hoisting reel is formed uniformly and places the grooving of wireline 23, the two ends of wireline 23 symmetrically coiling in the grooving of double hoisting reel, to make the stress balance at the two ends of wireline 23.Wireline 23 can from the grooving at middle part towards zygomorphy ground coiling, also can from the grooving of both sides towards middle part coiling symmetrically, preferably, when horizontal loop is entry loop, wireline 23 is from middle part towards zygomorphy ground coiling, when being in full cover position (position namely during normal production) to make entry loop, the moment of flexure that reel 21 is subject to is less, thus optimizes the stressed of reel 21; When horizontal loop is outlet looping, wireline 23 is coiling symmetrically from both sides towards middle part, with make outlet looping be in empty set position (namely normal produce time position) time, the moment of flexure that reel 21 is subject to is less.
In addition, also carrying roller 24 can be set in the front of travelling block 26,27, to support or to hold the wireline 23 of coiling travelling block 26,27, ensure the height of wireline 23.In addition, drive unit 28 can be electric motor and step-down gear.
Describe the working process of horizontal loop below with reference to accompanying drawings in detail.
Fill in cover process at horizontal loop, drive unit 28 makes reel 21 be subject to forward making a concerted effort of (right side namely in Fig. 2) with movable reel 21 thus (being namely seen as clockwise from the view of Fig. 3) rotates clockwise, wireline 23 along the grooving extended from centre to both sides symmetrically coiling on reel 21, along with the coiling of wireline 23, wireline 23 pulls forward travelling block 26 and 27, and then pull loop trolley 25 to travel forward, along with the loop trolley of front end travels forward successively, steel band can enter horizontal loop more.Now, owing to there are two travelling block 26, 27, make travelling block 26, the stressed half of making a concerted effort for forward direction on the wireline 23 at 27 two ends, and when loop trolley 25 moves forward predetermined distance, each travelling block all moves forward described predetermined distance, namely the equal coiling in the both sides of reel 21 has the wireline 23 of the length of the described predetermined distance of two times, the translational speed of wireline 23 has become original two times, in addition, because the two ends of reel 21 are fixed, when entry loop is in full cover position, the pulling force of wireline 23 pairs of reels is positioned at the two ends place of reel 21, therefore, the moment of flexure reel of entry loop being subject to from middle part towards the mode of both sides coiling wireline 23 is less, similarly, (not shown) when outlet looping is in empty set position, the pulling force of wireline 23 pairs of reels 21 is positioned at the two ends place of reel 21, and therefore, the moment of flexure reel of outlet looping being subject to from both sides towards the mode of middle part coiling is less.
Put in cover process at entry loop, because steel band itself has backward the pulling force in (left side namely in Fig. 2) always, therefore when drive unit 28 provides less motivating force, loop trolley 25, travelling block 26,27 and reel 21 be subject to backward make a concerted effort, reel 21 counterclockwise (being namely seen as counterclockwise from the view of Fig. 3) rotates, wireline 23 is released from reel 21, loop trolley 25 moves backward, along with the loop trolley of front end moves successively backward, steel band can leave horizontal loop and enter in production process subsequently.
Therefore, according to the beneficial effects of the utility model be: loop trolley is in operational process, under the effect of travelling block and fixed pulley, wireline is symmetrical in drum center line all the time and runs, due to the medullary ray that drum center line is also loop trolley simultaneously, so the pulling force of both sides wireline to reel is symmetrical.In addition, wireline, by the coiling of a fixed pulley, two travelling block, makes the stressed of wireline alleviate as original half, and the translational speed of wireline becomes original twice simultaneously, therefore the step-down gear that speed can be selected smaller.In addition, the fixed form of the wireline of entry loop is improved to middle part wireline being originated in reel, the moment of flexure that reel is subject to is less, therefore, the stressed of wireline and reel can be optimized by the layout improving pulley and wireline, thus more economic wireline and step-down gear can be selected, structure is simple, economically feasible, ensure that the high-speed stable running of Long Distances horizontal loop, decreases cost consumption.
Although show and described embodiments more of the present utility model, but, it should be appreciated by those skilled in the art, when not departing from principle of the present utility model and spirit, can make change in these embodiments, scope of the present utility model is by claim and equivalents thereof.