CN112845627A - Strip steel tension device - Google Patents
Strip steel tension device Download PDFInfo
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- CN112845627A CN112845627A CN202011619382.8A CN202011619382A CN112845627A CN 112845627 A CN112845627 A CN 112845627A CN 202011619382 A CN202011619382 A CN 202011619382A CN 112845627 A CN112845627 A CN 112845627A
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- roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/08—Braking or tensioning arrangements
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Abstract
The invention discloses a strip steel tension device, which comprises: a frame; the first lifting roller and the second lifting roller are positioned above the strip steel; a lifting assembly mounted to the frame for independently raising and lowering the first lifting roller and the second lifting roller, respectively; the device comprises a first moving roller, a second moving roller and a fixed roller, wherein the first moving roller and the second moving roller are positioned below strip steel, and the fixed roller is positioned between the first moving roller and the second moving roller; a traverse assembly mounted to the frame for independently moving the first and second moving rollers laterally, respectively; and the pressing locking mechanism is used for respectively pressing and locking the first lifting roller and the second lifting roller so as to accurately control the roller gap overlapping amount between the first lifting roller and the first moving roller, between the second moving roller and between the first lifting roller and the second lifting roller and between the first lifting roller and the second moving roller and between the first lifting roller and the fixed roller. The tension generation device can realize the tension generation of the strip steel with different thicknesses and different strengths through different working states.
Description
Technical Field
The invention relates to the technical field of steel rolling processes, in particular to a strip steel tension device.
Background
Generally speaking, the tension device can be widely used in the production lines of a hot rolling leveling and splitting unit, a single-stand reversible cold rolling unit, a recoiling unit, a cold leveling unit and the like. The production line has short process flow, is produced by single coil, and has frequent threading in production, so that an S roller type capable of providing large tension cannot be adopted. The existing tension mechanism can adopt a tension mode that a lower roller is fixed and performs concentrated transmission, an upper roller is lifted, and the roller interval is nonadjustable, and the pressing overlap amount is basically fixed and smaller. However, for the working condition of large span of the incoming material thickness range, only one tension generation mode is available, and the generated tension generally cannot meet the tension required by the process. In addition, for thin strip steel, the existing tension mechanism is difficult to generate tension due to a small wrap angle of the strip steel, and the surface of the strip steel is easy to scratch. With the market development of environmental protection and light weight, the occupation ratio of the high-strength plate strip steel is in a great growth trend, and the strength is up to 1300MPa or even higher.
Accordingly, there is a need in the art for a new strip tension apparatus that eliminates or at least alleviates some or all of the above-mentioned deficiencies in the prior art.
Disclosure of Invention
In view of the above technical problems in the prior art, an object of the present invention is to provide a strip steel tension device, which can generate tension of strip steel with different thicknesses and different strengths through different working states, and is multifunctional and tension-adjustable.
It is emphasized that, unless otherwise indicated, the terms used herein correspond to the ordinary meanings of the various technical and scientific terms in the art, and the meanings of the technical terms defined in the various technical dictionaries, textbooks, etc.
To this end, according to an embodiment of the present invention, there is provided a strip tension apparatus, wherein the strip tension apparatus includes:
a frame;
the first lifting roller and the second lifting roller are positioned above the strip steel;
a lifting assembly mounted to the frame for independently raising and lowering the first lifting roller and the second lifting roller, respectively;
the device comprises a first moving roller, a second moving roller and a fixed roller, wherein the first moving roller and the second moving roller are positioned below strip steel, and the fixed roller is positioned between the first moving roller and the second moving roller;
a traverse assembly mounted to the frame for independently moving the first and second moving rollers laterally, respectively;
and the pressing locking mechanism is used for respectively pressing and locking the first lifting roller and the second lifting roller so as to accurately control the roller gap overlapping amount between the first lifting roller and the first moving roller, between the second moving roller and between the first lifting roller and the second lifting roller and between the first lifting roller and the second moving roller and between the first lifting roller and the fixed roller.
Further, in an embodiment, the lifting assembly may include:
two pairs of wedge-shaped bearing blocks, wherein one pair can be used for supporting the first lifting roller, and the other pair can be used for supporting the second lifting roller, wherein the top surface of each wedge-shaped bearing block, which faces away from the strip steel, can be in a wedge shape;
two slide rails which can be vertically arranged on the frame, and two pairs of wedge-shaped bearing blocks which can be movably connected to the two slide rails respectively, so that the two slide rails can be used for guiding the first lifting roller and the second lifting roller to ascend and descend respectively;
first and second lift cylinders, which may be respectively connected to the two pairs of wedge shoes, such that the first and second lift cylinders may be respectively used to independently drive the first and second lift rollers up and down along the slide rail, wherein the first and second lift cylinders may be provided with first displacement sensors for monitoring the movement of the first and second lift rollers, respectively.
Further, in one embodiment, the traversing assembly can comprise:
two pairs of sliding bearing blocks, one pair of which can be used to support a first moving roller and the other pair can be used to support a second moving roller;
two slideways which can be arranged on the frame along the transverse direction, and two pairs of sliding bearing seats can be respectively connected to the two slideways in a slidable manner, so that the two slideways are respectively used for guiding the first moving roller and the second moving roller to move transversely;
two traversing mechanisms that can be respectively connected to the two pairs of sliding bearing blocks, such that the two traversing mechanisms can be respectively used to independently drive the first moving roller and the second moving roller to move laterally along the slideway.
Further, in an embodiment, the pressure-applying locking mechanism may include:
a push cylinder, which may be mounted to the frame by means of an articulation and which may carry a second displacement sensor;
a carriage assembly, which may include at least one carriage, the at least one carriage being removably mounted to the frame (8);
a wedge mechanism, the top of which facing away from the strip may be connected to the slide assembly and may be hinged at the sides to the push cylinder to be driven by the push cylinder to perform a telescopic movement along the at least one slide, and the bottom of the wedge mechanism facing the strip may be wedge-shaped adapted to cooperate with each pair of wedge-shaped bearing blocks top surfaces to slide on the respective wedge-shaped bearing block top surfaces and to lock the position of the respective wedge-shaped bearing block, wherein a second displacement sensor is used to monitor the movement of the wedge mechanism.
Further, in an embodiment, the at least one carriage may have a "T" shaped groove structure and the cam mechanism may have a matching "T" shape to connect to the at least one carriage.
Further, in an embodiment, the at least one carriage may be mounted to the frame by a first fastener.
Further, in an embodiment, two fixed bearing seats for mounting the fixed roller may be provided on the frame, and both of the two fixed bearing seats may be mounted to the frame by the second fastening member.
Further, in an embodiment, the strip tension apparatus may further include a latch locking mechanism for locking the first lifting roller and the second lifting roller, which may include:
a locking cylinder mountable to the two stationary bearing blocks;
the two sliding chutes are respectively arranged on the two fixed bearing seats along the transverse direction and respectively extend towards the sliding bearing seats on the two sides;
two latches, which may be respectively hinged to the locking cylinders and may be driven by the locking cylinders to respectively perform telescopic movements along the two sliding chutes, wherein the two latches may be respectively extended to be connected to the corresponding sliding bearing housings, as required, to lock the first moving roller and the second moving roller in place.
Further, in an embodiment, the strip tension device may further include a driving mechanism, which may include:
three reduction motors for independently driving the first moving roller, the second moving roller, and the fixed roller, respectively;
and the three universal couplings can be respectively used for connecting the first movable roller, the second movable roller and the fixed roller with the corresponding speed reducing motors.
Further, the strip steel tension device according to any one of the above embodiments may have four operating states, i.e., a thick strip tension generating state, a thin strip tension generating state, a high-strength strip steel tension generating state, and a fast strip threading state, and one of the four operating states may be selectively implemented according to different incoming material parameters.
The strip steel tension device provided by the embodiment of the invention has the following beneficial effects:
the tension generation device can realize the tension generation of the strip steel with different thicknesses and different strengths through different working states.
Furthermore, the invention can realize two tension generation modes for band steel with different thicknesses and different strengths by adopting the structural types of a movable roller, a wedge mechanism, a quick opening mechanism, single-roller transmission and the like, and particularly can provide large tension similar to that of an S roller for high-strength thin band steel.
Furthermore, the invention can lead the threading operation to be convenient and fast through the quick-opening mechanism, and avoid the threading difficulty in the production process of single coils.
In addition, the invention can adopt a mechanical mode for locking, such as self-locking of a pressure locking mechanism or locking of a bolt locking mechanism, so that the lifting cylinder is prevented from bearing heavy load all the time, thereby avoiding oil leakage faults and prolonging the service life of the lifting cylinder. .
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram showing a construction of a strip tension apparatus according to an embodiment of the present invention, in which a thick plate strip tension generating operation of the strip tension apparatus is shown;
FIG. 2 schematically illustrates the strip tension apparatus of FIG. 1 in a thin strip tension generating operation;
FIG. 3 schematically shows the drive mechanism of the strip tension device of FIG. 1 viewed in the A direction;
FIG. 4 schematically illustrates the strip tension device of FIG. 1 taken along line C-C, shown in a fast strip threading operating condition;
FIG. 5 schematically shows a front view and a view in direction B of a wedge-shaped bearing housing of the strip tension device in FIG. 1, respectively;
fig. 6 schematically shows a partial cross-sectional view of the strip tension device of fig. 1 taken along the line D-D, showing the manner of connection between the wedge mechanism and the sliding bearing blocks.
Description of the element reference numerals
1: a first moving roller; 2: a fixed roller; 3: a second moving roller; 4: a first lifting roller; 5: a second lifting roller; 6: a sliding bearing seat; 7: a traversing mechanism; 8: a frame; 9: a slide rail; 10: a bolt; 11: a locking cylinder; 12: fixing a bearing seat; 13: a wedge-shaped bearing seat; 14: a pushing cylinder; 15: a wedge mechanism; 16: a first slider; 17: a first lift cylinder; 18: a fastener; 19: a second lift cylinder; 20: a chute; 21: a second slide carriage; 22: a reduction motor; 23: a universal coupling; 100: a strip steel tension device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 6, there is shown a strip tension apparatus 100 according to an embodiment of the present invention, wherein the strip tension apparatus 100 includes:
a frame 8;
a first lifting roller 4 and a second lifting roller 5 which are positioned above the strip steel;
a lifting assembly mounted to the frame 8 for independently lifting and lowering the first lifting roller 4 and the second lifting roller 5, respectively;
the device comprises a first moving roller 1, a second moving roller 3 and a fixed roller 2, wherein the first moving roller 1 and the second moving roller 3 are positioned below strip steel, and the fixed roller 2 is positioned between the first moving roller 1 and the second moving roller 3, and a first lifting roller 4 and a second lifting roller 5 are positioned on two sides of the central line of the fixed roller 2;
a traverse assembly mounted to the frame 8 for laterally moving the first moving roller 1 and the second moving roller 3 independently from each other;
and a pressing locking mechanism for respectively pressing and locking the first lifting roller 4 and the second lifting roller 5 so as to accurately control the roller gap coincidence amount between the first lifting roller 4 and the second lifting roller 5 and the first moving roller 1, the second moving roller 3 and the fixed roller 2.
Further, in one embodiment, as shown in fig. 1 and 2, the lift assembly may include:
two pairs of wedge-shaped bearing blocks 13, one pair of which can be used to support the first lifting roll 4 and the other pair of which can be used to support the second lifting roll 5, wherein the top surface of each wedge-shaped bearing block 13 facing away from the strip can be wedge-shaped;
two slide rails 9 which may be vertically disposed on the frame 8, and two pairs of wedge-shaped bearing housings 13 may be movably connected to the two slide rails 9, respectively, such that the two slide rails 9 serve to guide the first lifting roller 4 and the second lifting roller 5 to ascend and descend, respectively;
a first lifting cylinder 17 and a second lifting cylinder 19, which may be connected to the two pairs of wedge-shaped bearing blocks 13, respectively, such that the first lifting cylinder 17 and the second lifting cylinder 19 are used to drive the first lifting roller 4 and the second lifting roller 5 up and down along the slide rail 9, respectively, independently, wherein the first lifting cylinder 17 and the second lifting cylinder 19 are each provided with a first displacement sensor for monitoring the movement of the first lifting roller 4 and the second lifting roller 5, respectively.
Further, in one embodiment, as shown in FIGS. 1 and 2, the traversing assembly can comprise:
two pairs of sliding chocks 6, one of which can be used to support the first mobile roller 1 and the other of which can be used to support the second mobile roller 3;
two slides which can be arranged on the frame 8 in the transverse direction and to which two pairs of sliding bearing blocks 6 are slidably connected, respectively, so that the two slides are used to guide the transverse movement of the first moving roller 1 and the second moving roller 3, respectively;
two traverse mechanisms 7, which can be respectively connected to the two pairs of sliding bearing housings 6, so that the two traverse mechanisms 7 are respectively used to independently drive the first moving roller 1 and the second moving roller 3 to move laterally along the ramp.
Further, in one embodiment, as shown in fig. 1, 2 and 5, the pressure-applying locking mechanism may comprise:
a push cylinder 14, which may be mounted to the frame 8 by means of an articulation, and the push cylinder 14 may carry a second displacement sensor;
a carriage assembly, which may include at least one carriage removably mounted to the frame 8;
a wedge mechanism 15, the top of which facing away from the strip may be connected to the slide assembly and may be hinged at the sides to the push cylinder 14 to be driven by the push cylinder 14 to perform a telescopic movement along the at least one slide, and the bottom of the wedge mechanism 15 facing the strip may be wedge-shaped and adapted to cooperate with the top surface of each pair of wedge shoes 13 to slide on the top surface of the respective wedge shoe 13 and lock the position of the respective wedge shoe 13, wherein a second displacement sensor is used to monitor the movement of the wedge mechanism 15.
Further, in one embodiment, as shown in FIG. 6, the at least one carriage may have a "T" groove configuration and the cam mechanism 15 may have a matching "T" shape for connection to the at least one carriage.
Further, in an embodiment, the at least one carriage may be mounted to the frame 8 by a first fastener.
Further, in an embodiment, two stationary bearing blocks for mounting the stationary roller 2 may be provided on the frame 8, and both of the two stationary bearing blocks may be mounted to the frame 8 by the second fastening member.
The first and second fasteners may each be a fastener 18, and the fastener 18 may be a threaded connection such as a bolt, as shown in FIG. 2.
Further, in an embodiment, as shown in fig. 1 and 2, the strip tension apparatus 100 may further include a latch locking mechanism for locking the first and second lifting rollers 4 and 5, which may include:
a locking cylinder 11 mountable to the two fixed bearing blocks;
two sliding grooves 20 which are respectively arranged on the two fixed bearing seats along the transverse direction and respectively extend towards the sliding bearing seats 6 on both sides;
two latches 10, which may be respectively hinged to the locking cylinders 11 and driven by the locking cylinders 11 to respectively perform telescopic movements along the two sliding chutes 20, wherein the two latches 10 may be respectively extended to be connected to the corresponding sliding bearing housings 6, as needed, to lock the first moving roller 1 and the second moving roller 3 in place.
Further, in an embodiment, as shown in fig. 1 to 4, the strip tension apparatus 100 may further include a driving mechanism, which may include:
three reduction motors 22 for independently driving the first moving roller 1, the second moving roller 3, and the fixed roller 2, respectively;
three universal couplings 23, which can be used to connect the first moving roller 1, the second moving roller 3, and the fixed roller 2 with the respective reduction motors, respectively.
Further, the strip tension device 100 of any of the above embodiments may have four operating states, namely, a thick strip tension generating state, a thin strip tension generating state, a high-strength strip tension generating state, and a fast strip threading state, and one of the four operating states may be selectively realized according to different incoming material parameters.
A strip tension apparatus according to an embodiment of the present invention is further described below by way of example.
Referring to fig. 1 to 6, there is shown a strip tension apparatus 100 according to an embodiment of the present invention, which includes: the device comprises a first moving roller 1, a fixed roller 2, a second moving roller 3, a first lifting roller 4, a second lifting roller 5, a sliding bearing seat 6, a transverse moving mechanism 7, a rack 8, a sliding rail 9, a bolt 10, a locking cylinder 11, a fixed bearing seat 12, a wedge-shaped bearing seat 13, a pushing cylinder 14, a wedge mechanism 15, a first sliding seat 16, a first lifting cylinder 17, a fastening piece 18, a second lifting cylinder 19, a sliding groove 20, a second sliding seat 21, a speed reduction motor 22 and a universal coupling 23.
Preferably, the strip tension device 100 may be made of a high-strength plate.
The operation of the strip tension device 100 is described in detail below.
The strip tension device 100 according to the present invention may have four operating states as follows:
1) thick plate belt tension generating state
2) Tension generation state of thin strip
3) High-strength plate strip steel tension generating state
4) State of quick-opening belt-threading
The first movable roller 1 and the second movable roller 3 can be respectively installed on four sliding bearing seats 6, and the sliding bearing seats 6 can be transversely moved along a slide way on a rack 8 through a transverse moving mechanism 7, for example, the transverse moving mechanism can be moved left and right in fig. 1.
The first lifting roller 4 and the second lifting roller 5 can be respectively arranged on two pairs of wedge-shaped bearing blocks 13, and the two pairs of wedge-shaped bearing blocks 13 can be respectively and independently lifted along the slide rail 9 fixed on the frame 8 through a first lifting cylinder 17 and a second lifting cylinder 19. Both the first and second lift cylinders 17, 19 may be provided with a first sensor of displacement.
The first 16 and second 21 carriages may be mounted to the frame 8 by fasteners 18, respectively.
The pushing cylinder 14 may be hingedly mounted to the frame 8. The cam mechanism 15 can be articulated with the push cylinder 14 and can slide along the first 16 or second 21 slide by means of the push cylinder 14. As shown in fig. 1 and 2, the longitudinal section of the wedge mechanism 15 may be in the shape of a right trapezoid, wherein the top edge of the wedge mechanism 15 is the leg of the right trapezoid, the bottom edge is the hypotenuse of the right trapezoid, and the longitudinal thickness of the wedge mechanism 15 gradually narrows from its side close to the push cylinder 14 to its other side far from the push cylinder 14. The top of the wedge mechanism 15 can be connected with the first sliding seat 16 or the second sliding seat 21 through a T-shaped groove, and the bottom can be a bilaterally symmetrical wedge-shaped surface which can be matched with the wedge-shaped surface at the top of the wedge bearing seat 13 to slide. The push cylinder 14 may be provided with a second displacement sensor.
The fixed roller 2 may be mounted on two fixed bearing blocks 12, the fixed bearing blocks 12 being securable to the frame 8 by fasteners 18.
A locking cylinder 11 can be mounted on the fixed bearing block 12, the locking cylinder 11 can be hinged with a bolt 10, and the bolt 10 can move along a sliding groove 20 through the locking cylinder 11, for example, can move left and right in fig. 1, so as to lock the positions of the first lifting roller 4 and the second lifting roller 5.
The first movable roller 1, the fixed roller 2 and the second movable roller 3 can be independently driven by a speed reduction motor 22 through a universal joint 23.
The invention can realize the thick plate belt tension generation state, the thin belt tension generation state, the high-strength plate strip steel tension generation state and the quick-opening strip-penetrating state according to different incoming material parameters, and can effectively solve the problem that the existing tension device can not meet the process tension required by the strip steel strength and the large span of the strip steel thickness range; the scratch of the strip steel in the tension generation process can be avoided, and the yield is improved; in addition, the wedge mechanism can be adopted to realize the tension generation of the high-strength thick strip steel, and the tension shaking and the oil leakage of the hydraulic cylinder in the production process are avoided.
The method of implementing the strip tension apparatus 100 of the present invention is described in detail below:
1) generating the tension of thick plate strips and high-strength plate strip steel: when the strip steel tension device 100 of the present invention receives a new steel coil and performs a threading operation, the two pairs of sliding bearing blocks 6 are respectively pushed to move by the traversing mechanism 7, so that the first moving roller 1 and the second moving roller 3 are located at the minimum roll gap position. Then, pushing cylinder 14 retracts cam mechanism 15 to the retracted position. The first and second lift cylinders 17, 19 can then bring the two pairs of wedge shoes 13, respectively, to a retracted position rapidly along the slide rails 9 fixed to the frame 8. At this time, the gaps between the first lifting roller 4 and the second lifting roller 5 positioned above and the first moving roller 1, the fixed roller 2, and the second moving roller 3 positioned below are opened to the maximum, and the threading work can be started. And after the threading is finished, calculating the optimal overlapping amount of the roll gap according to the requirements of the thickness, the strength and the process tension of the strip steel. The first lifting cylinder 17 and the second lifting cylinder 19 can respectively drive the two pairs of wedge-shaped bearing seats 13 to press down until the first lifting roller 4 and the second lifting roller 5 are respectively contacted with the strip steel. Then, the pushing cylinder 14 can drive the wedge mechanism 15 to extend out and fit with the top wedge surface of the wedge bearing seat 13, and continue to drive the wedge mechanism 15 until the roll gap coincidence amount required by the process is achieved, as shown in fig. 2. At this time, the first lift cylinder 17 and the second lift cylinder 19 can be reversely filled with oil, and serve as balance cylinders to tightly attach the two pairs of wedge-shaped bearing blocks 13 to the wedge mechanism 15. By self-locking between the wedge bearing block 13 and the wedge mechanism 15, the stability of the tension generation can be ensured. In practice, the tension generation may be related to three reduction motors 22 that drive the first moving roller 1, the fixed roller 2, and the second moving roller 3, in addition to the overlapping amount of the roll gap. By controlling the output power of the three speed reduction motors 22 and the inlet strip tension, the required tension can be accurately obtained.
2) Generating the tension of the thin strip, including the tension of the high-strength thin strip steel: when the strip steel tension device 100 of the present invention receives a new steel coil and performs a threading operation, the two pairs of sliding bearing blocks 6 are respectively pulled by the traversing mechanism 7 to move, so that the first moving roller 1 and the second moving roller 3 are located at the maximum roll gap position. Then, pushing cylinder 14 retracts cam mechanism 15 to the retracted position. Then, the first lifting cylinder 17 and the second lifting cylinder 19 can drive the two pairs of wedge-shaped bearing blocks 13 to retract to the retracted position along the slide rails 9 fixed on the frame 8. At this time, the gaps between the first lifting roller 4 and the second lifting roller 5 positioned above and the first moving roller 1, the fixed roller 2, and the second moving roller 3 positioned below are opened to the maximum, and the threading work can be started. And after threading is finished, calculating a tension value required to be generated according to the thickness, the strength and the process tension requirement of the strip steel. The first and second lift cylinders 17, 19 can bring the two pairs of wedge shoes 13 down until the maximum stroke is reached. Then, the locking cylinder 11 can push the bolt 10 to extend along the sliding chute 20 and insert into the pin hole of the sliding bearing seat 6, so as to lock the position of the sliding bearing seat 6, and the first lifting cylinder 17 and the second lifting cylinder 19 release pressure. Then, the required tension is realized by controlling the output power of the speed reducing motor 22 and the inlet strip steel tension.
If the required tension is small, the first lifting cylinder 17 and the second lifting cylinder 19 can drive the two pairs of wedge-shaped bearing seats 13 to press down until the strip steel wrap angle required by the generated tension is met. At this point, the first and second lift cylinders 17 and 19 may be pressurized until the coiled strip production is complete.
In addition, because the first movable roller 1, the fixed roller 2 and the second movable roller 3 adopt an independent transmission mode, the tension regulation and control are more flexible and faster.
3) A quick opening state: when the strip steel tension device 100 of the present invention receives a new steel coil and performs a threading operation, the two pairs of sliding bearing blocks 6 are respectively pushed to move by the traversing mechanism 7, so that the first moving roller 1 and the second moving roller 3 are located at the minimum or maximum roll gap positions according to the feeding state. Then, pushing cylinder 14 retracts cam mechanism 15 to the retracted position. The first and second lift cylinders 17, 19 can then bring the two pairs of wedge shoes 13 to a rapid retraction position along the slide rails 9 fixed to the frame 8.
The invention can realize four threading states of a thick plate belt tension generating state, a thin belt tension generating state, a high-strength plate strip steel tension generating state and a quick-opening threading state by arranging the moving roller, the lifting roller, the wedge pressing mechanism, the bolt locking mechanism and the like, and can obtain the following effects:
firstly, when thick strip steel is produced, large tension can be generally generated; however, it is difficult to adopt a tension generating system with a large wrap angle in order to prevent excessive yield deformation of thick strip steel due to a large tension. Therefore, the strip steel tension device can adopt the modes of pressure maintaining of the lifting cylinder and inclined wedge pressing, and ensure the roll gap coincidence quantity required by the process by accurately controlling the position of the pushing cylinder, thereby obtaining an accurate tension value. And, because the slide wedge mechanism can be auto-locked, the lift cylinder only plays the balancing role, so the tension value that produces is stable to the oil leak trouble of lift cylinder has been avoided.
Secondly, when the thin strip steel is produced, the strip steel tension device can realize the generation of large tension in the form of an S roller which is usually adopted in a strip steel continuous production line. In contrast, in the conventional tension device, because the roller distance between the upper roller and the lower roller is small and the position is fixed, large tension cannot be generated for the thin strip steel, so that the last circles of the thin strip steel cannot be wound tightly.
And thirdly, after tension is generated for high-strength plate strip steel, no matter thick strip steel or thin strip steel, the high-strength plate strip steel is locked in a mechanical mode, for example, the high-strength plate strip steel is locked by a wedge mechanism in a self-locking mode or a bolt, so that the first lifting cylinder is prevented from directly bearing heavy load, oil leakage faults are avoided, and the service life of the lifting cylinder is prolonged.
The strip steel tension device has the quick opening function, so that the strip threading work is quick and convenient.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A strip tension device, comprising:
a frame (8);
a first lifting roller (4) and a second lifting roller (5) which are positioned above the strip steel;
a lifting assembly mounted to the frame (8) for independently raising and lowering the first lifting roller (4) and the second lifting roller (5), respectively;
the device comprises a first moving roller (1), a second moving roller (3) and a fixed roller (2), wherein the first moving roller (1) and the second moving roller (3) are positioned below strip steel, the fixed roller (2) is positioned between the first moving roller (1) and the second moving roller (3), and a first lifting roller (4) and a second lifting roller (5) are positioned on two sides of the central line of the fixed roller (2);
a traverse assembly mounted to the frame (8) for moving the first moving roller (1) and the second moving roller (3) laterally independently of each other;
and the pressing locking mechanism is used for respectively pressing and locking the first lifting roller (4) and the second lifting roller (5) so as to accurately control the roll gap overlapping amount between the first lifting roller (4) and the first lifting roller (5) and between the second lifting roller (5) and the first moving roller (1), between the second moving roller (3) and between the first lifting roller and the fixed roller (2).
2. The strip tension apparatus of claim 1, wherein the lifting assembly comprises:
two pairs of wedge-shaped bearing blocks (13), wherein one pair is used for supporting the first lifting roller (4), and the other pair is used for supporting the second lifting roller (5), and the top surface of each wedge-shaped bearing block (13) facing away from the strip steel is in a wedge shape;
two slide rails (9) which are vertically arranged on the frame (8), and two pairs of wedge-shaped bearing blocks (13) are movably connected to the two slide rails (9) respectively, so that the two slide rails (9) are used for guiding the first lifting roller (4) and the second lifting roller (5) to ascend and descend respectively;
a first lifting cylinder (17) and a second lifting cylinder (19) which are respectively connected to the two pairs of wedge-shaped bearing blocks (13) so that the first lifting cylinder (17) and the second lifting cylinder (19) are respectively used for independently driving the first lifting roller (4) and the second lifting roller (5) to ascend and descend along the slide rail (9), wherein the first lifting cylinder (17) and the second lifting cylinder (19) are respectively provided with a first displacement sensor which is respectively used for monitoring the movement of the first lifting roller (4) and the second lifting roller (5).
3. The strip tension apparatus of claim 1, wherein the traverse assembly comprises:
two pairs of sliding bearing blocks (6), one pair of which is used for supporting the first moving roller (1) and the other pair is used for supporting the second moving roller (3);
two slideways which are arranged on the frame (8) along the transverse direction, and two pairs of sliding bearing seats (6) are respectively connected to the two slideways in a slidable manner, so that the two slideways are respectively used for guiding the first moving roller (1) and the second moving roller (3) to move transversely;
two traverse mechanisms (7) respectively connected to the two pairs of sliding bearing blocks (6) so that the two traverse mechanisms (7) are respectively used for independently driving the first moving roller (1) and the second moving roller (3) to move transversely along the slideway.
4. The strip tension apparatus of claim 2, wherein the press locking mechanism comprises:
a push cylinder (14) mounted to the frame (8) by means of an articulation and the push cylinder (14) carrying a second displacement sensor;
a carriage assembly comprising at least one carriage removably mounted to the frame (8);
-wedge means (15) connected to the slide assembly at the top facing away from the strip and hinged at the sides to the push cylinder (14) to be driven by the push cylinder (14) to perform a telescopic movement along said at least one slide, and-the bottom of the wedge means (15) facing the strip is wedge-shaped and adapted to cooperate with the top surface of each pair of wedge-shaped bearing blocks (13) to slide on the top surface of the respective wedge-shaped bearing block (13) and to lock the position of the respective wedge-shaped bearing block (13), wherein a second displacement sensor is used to monitor the movement of the wedge means (15).
5. Strip tension device according to claim 4, characterized in that the at least one slide has a "T" groove configuration and the wedge mechanism (15) has a matching "T" shape for connection to the at least one slide.
6. Strip tension device according to claim 5, characterized in that the at least one slide is mounted to the frame (8) by means of a first fastening.
7. A strip tension device according to claim 3, characterized in that two fixed bearing blocks for mounting the fixed rolls (2) are provided on the frame (8) and that both fixed bearing blocks are mounted to the frame (8) by means of second fastening members.
8. The strip tension device according to claim 7, further comprising a latch locking mechanism for locking the first lifting roller (4) and the second lifting roller (5), comprising:
a locking cylinder (11) mounted to the two fixed bearing blocks;
the two sliding chutes (20) are respectively arranged on the two fixed bearing seats along the transverse direction and respectively extend towards the sliding bearing seats (6) on the two sides;
two latches (10) hinged to the locking cylinders (11) respectively and driven by the locking cylinders (11) to perform telescopic movements along the two runners (20) respectively, wherein the two latches (10) can be extended respectively to be connected to the respective sliding housings (6) as required, so as to lock the first mobile roller (1) and the second mobile roller (3) in position.
9. The strip tension apparatus of claim 1, further comprising a drive mechanism comprising:
three reduction motors (22) for independently driving the first moving roller (1), the second moving roller (3), and the fixed roller (2), respectively;
and the three universal couplings (23) are respectively used for connecting the first moving roller (1), the second moving roller (3) and the fixed roller (2) with the corresponding speed reducing motors.
10. The strip tension apparatus as claimed in any one of claims 1 to 9, wherein there are four operating states of a thick strip tension generating state, a thin strip tension generating state, a high-strength strip tension generating state, and a quick strip-threading state, and one of the four operating states can be selectively realized according to the difference of incoming material parameters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011619382.8A CN112845627A (en) | 2020-12-30 | 2020-12-30 | Strip steel tension device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011619382.8A CN112845627A (en) | 2020-12-30 | 2020-12-30 | Strip steel tension device |
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| CN112845627A true CN112845627A (en) | 2021-05-28 |
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