WO2022262326A1 - Energy-saving pendulum shear for thin slab continuous casting and continuous rolling - Google Patents

Abstract

An energy-saving pendulum shear for thin slab continuous casting and continuous rolling. A guide sleeve (4) and a guide rod (5) are arranged between an upper shearing device (8) and an eccentric crankshaft (3) of the pendulum shear; one end of the guide sleeve (4) is rotatably connected to the eccentric crankshaft (3), and the other end thereof is provided with a guide hole (42); one end of the guide rod (5) is slidably connected to the guide sleeve (4) by means of the guide hole (42), and the other end thereof is connected to the upper shearing device (8); the guide sleeve (4) is provided with a first positioning surface (41), and the guide rod (5) is provided with a second positioning surface (61); a wedge block (6) is arranged between the first positioning surface (41) and the second positioning surface (61); the first positioning surface (41) and the second positioning surface (61) are both in surface contact with the wedge block (6); the wedge block (6) is connected to a driving device; and the wedge block is driven by the driving device to slide between the first positioning surface (41) and the second positioning surface (61), so as to adjust the distance between the first positioning surface (41) and the second positioning surface (61). The pendulum shear for continuous casting and continuous rolling uses the wedge block (6) to replace a traditional hydraulic cylinder positioning means, and a hydraulic pressurization system is removed, such that the requirements for a power system and an oil supply system of a hydraulic station are reduced, thereby reducing the apparatus investment cost and the energy consumption of the pendulum shear.

Description

An energy-saving pendulum shear for thin slab continuous casting and rolling technical field

The invention belongs to the technical field of continuous casting and rolling, and relates to an energy-saving pendulum shear for continuous casting and rolling of thin slabs.

Background technique

The pendulum shear is an important core equipment in the thin slab continuous casting and rolling mill, which is used for shearing the dummy bar and the intermediate billet. Since the slab to be sheared has a large thickness and a large width, the required shearing force is also very large.

In the prior art, such as the Chinese patent with the publication number CN112809066A, a hot-rolled slab connecting device is disclosed, which includes an upper shearing device and a lower shearing device, a fixed frame, a hydraulic shearing device and the Hot-rolled slab pendulum shear swing control device. The hot-rolled slab pendulum shear swing control device includes the assembly of the transmission eccentric crankshaft and the assembly of the swing frame. The bearing seat I is symmetrically arranged, and the transmission eccentric crankshaft body is installed on the fixed frame through the bearing seat I, the output end of the motor is connected with the input end of the gearbox I through the coupling I, the output end of the gearbox I is connected through the coupling The shaft device II is connected with one end of the transmission eccentric crankshaft body; the swing frame assembly includes two swing frame bodies.

Another example is the Chinese patent whose publication number is CN110497011B, which discloses a pendulum shear, including a speed reducer, an eccentric shaft, a support, an integral shear blade frame, a main oil cylinder, a pressure plate oil cylinder, a balance cylinder, and a swing cylinder, and the speed reducer is connected by a shaft coupling. Eccentric shaft; the bracket is supported on the ground foundation, and a pair of first bearing seats are arranged at the upper end; the overall shearing edge frame includes a swing frame, an upper cutting edge frame and a lower cutting edge frame, and a pair of second bearing seats are arranged at the upper end of the swinging frame; Frame slide plates are set on both sides of the blade frame and slide fit on the upper part of the swing frame, the lower shear blade frame is fixed on the lower part of the swing frame, the upper end of the main oil cylinder is provided with a third bearing seat, and the lower end is connected to the upper shear blade frame; the first bearing seat, the second bearing seat and the third bearing seat respectively cooperate with the eccentric shaft; the pressure plate oil cylinder is installed on the upper shear blade frame, and the piston rod of the pressure plate oil cylinder is connected to the pressure plate downward; the balance cylinder is installed on the swing frame and connected to both sides of the upper shear blade frame; the swing cylinder is installed on the bracket and attached to the back of the swing frame.

Compared with the traditional slab swing shear, the thin slab continuous casting and rolling pendulum shear has a different shearing process. The upper shear blade is positioned and the lower shear blade is lifted. In the above-mentioned prior art, the positioning structure of the upper shearing edge adopts a large non-standard hydraulic cylinder and is equipped with a booster system to provide a reverse shearing force of more than 2,000 tons. The hydraulic cylinder directly bears the shearing force during work, and the hydraulic pressure The cylinder wears out quickly; and in order to provide hydraulic oil for the hydraulic cylinder, it needs to be equipped with a large hydraulic station with hundreds of kilowatts. Therefore, in the prior art, both the energy consumption during use and the direct investment cost are very large.

Contents of the invention

In view of this, the purpose of the present invention is to solve the problems of fast consumption of the hydraulic cylinder and high power consumption in the existing positioning method of the upper shearing device, and provide an energy-saving pendulum shear for continuous casting and rolling of thin slabs.

To achieve the above object, the present invention provides the following technical solutions:

An energy-saving pendulum shear for thin slab continuous casting and rolling. A guide sleeve and a guide rod are provided between the upper shear device of the pendulum shear and the eccentric crankshaft; one end of the guide sleeve is rotationally connected with the eccentric crankshaft, and the other end is provided with a A guide hole, one end of the guide rod is set in the guide hole, and is slidably connected with the guide sleeve through the guide hole, and the other end is connected with the upper shearing device; the guide sleeve is provided with a first positioning surface, and the guide rod is A second positioning surface is provided, and the working height of the upper shearing device is determined by the distance between the first positioning surface and the second positioning surface; a wedge shape is provided between the first positioning surface and the second positioning surface. block; the first positioning surface and the second positioning surface are in contact with the wedge-shaped block; the wedge-shaped block is connected with a driving device; the wedge-shaped block is driven by the driving device between the first positioning surface and the described wedge-shaped block sliding between the second positioning surfaces to change the distance between the first positioning surface and the second positioning surface.

In this basic scheme, the wedge-shaped block is used to adjust the extension distance of the guide rod to realize the positioning of the upper shearing device, and the shear force is directly transmitted through the guide rod and the guide sleeve, thereby avoiding the hydraulic cylinder directly bearing the shear force in the traditional method; At the same time, the wedge block replaces the traditional hydraulic cylinder positioning method, thereby eliminating the hydraulic pressure boosting system, thereby reducing the power system and oil supply system requirements of the hydraulic station, and reducing the equipment investment cost and energy consumption of the pendulum shear.

Further, the guide rod is provided with a sliding part away from the end of the upper shearing device; the sliding part is arranged in the guide hole and slides in the guide hole.

Further, a sliding bearing is arranged in the guide hole, and the sliding part is slidingly matched with the sliding bearing.

Further, the wedge-shaped block is provided with a U-shaped groove, and the guide rod is arranged in the U-shaped groove; the width of the U-shaped groove is smaller than the outer diameter of the sliding part; a U-shaped groove is arranged on the wedge-shaped block for avoiding Open the spatial position of the guide rod; the width of the U-shaped groove is smaller than the outer diameter of the sliding part, so that the sliding part is limited in the guide hole.

Further, the guide rod is provided with a push rod near the end of the upper shearing device; the push rod is covered with a hoop, and the hoop is fixedly connected with the upper shearing device.

Further, one end of the driving device is fixedly connected to the guide sleeve, and the other end is provided with a pin shaft; an L-shaped connecting rod is arranged between the wedge-shaped block and the driving device, and one end of the L-shaped connecting rod is connected to the wedge-shaped block , the other end is provided with a bar-shaped hole along the axial direction of the guide rod, and the pin shaft is connected with the L-shaped connecting rod through the bar-shaped hole; the driving device drives the wedge-shaped block to slide left and right through the L-shaped connecting rod, and the L-shaped connecting rod The hole slides up and down, so that the wedge-shaped block fits the first positioning surface and the second positioning surface, thereby changing the working height of the upper shearing device.

Further, there is at least one wedge, and each wedge is connected to a driving device; each wedge is independently driven by a driving device, which is convenient for controlling the stacking height of the wedges.

Further, there are a plurality of wedge blocks, and a plurality of wedge blocks are stacked along the axial direction of the guide rod, and two adjacent wedge blocks are arranged opposite to each other; the stacking type of wedge blocks can increase the speed of positioning adjustment while reducing the number of single The length of the wedge block improves efficiency and facilitates space layout.

Further, the end of the guide sleeve away from the upper shearing device is provided with a split bearing, and is rotatably connected to the eccentric crankshaft through the split bearing.

The beneficial effects of the present invention are:

1) In the present invention, two positioning surfaces are arranged on the upper shearing device, and wedge blocks are arranged between the positioning surfaces, and the distance of the positioning surfaces is adjusted through the movement of the wedge blocks, thereby realizing the adjustment of the working height of the upper shearing device.

2) The present invention replaces the traditional hydraulic cylinder positioning method with the wedge-shaped block positioning method, and realizes that the shearing force is directly transmitted through the guide rod and the guide sleeve, thereby avoiding the hydraulic cylinder from directly bearing the shearing force; at the same time, the hydraulic pressure boosting system is eliminated , reduce the equipment investment cost and energy consumption of pendulum shearing.

Other advantages, objects and features of the present invention will be set forth in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the investigation and research below, or can be obtained from It is taught in the practice of the present invention. The objects and other advantages of the invention may be realized and attained by the following specification.

Description of drawings

In order to make the purpose of the present invention, technical solutions and advantages clearer, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the front view of energy-saving thin slab continuous casting and rolling swing shear in the present invention;

Fig. 2 is the left side view of Fig. 1;

Fig. 3 is the front view of guide rod installation structure in the present invention;

Fig. 4 is the left side view of Fig. 3;

Fig. 5 is the structural representation of guide bar in the present invention;

Fig. 6 is a schematic view of the structure of the guide sleeve in the present invention;

Fig. 7 is a front view of a wedge block in the present invention;

Figure 8 is a top view of Figure 7;

Reference signs: 1-motor; 2-gearbox; 3-eccentric crankshaft; 4-guide sleeve; 5-guide rod; 6-wedge block; 7-negative pressure system; 8-upper shear device; ;10-lower shearing device; 11-split bearing; 12-two-way hydraulic cylinder; 13-sliding bearing; Pin shaft; 41-first positioning surface; 42-guide hole; 61-second positioning surface; 62-sliding part.

detailed description

Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should not be construed as limiting the present invention; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, Enlargement or reduction does not represent the size of the actual product; for those skilled in the art, it is understandable that certain known structures and their descriptions in the drawings may be omitted.

In the drawings of the embodiments of the present invention, the same or similar symbols correspond to the same or similar components; , "front", "rear" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred devices or elements must It has a specific orientation, is constructed and operated in a specific orientation, so the terms describing the positional relationship in the drawings are for illustrative purposes only, and should not be construed as limiting the present invention. For those of ordinary skill in the art, the understanding of the specific meaning of the above terms.

Example 1

Please refer to Figures 1 to 8, which are energy-saving thin slab continuous casting and rolling swing shears, including motor 1, gear box 2, eccentric crankshaft 3, negative pressure system 7, upper shearing device 8, swing frame 9, lower The shearing device 10, the motor 1 is connected to the eccentric crankshaft 3 through the gearbox 2, the eccentric crankshaft 3 is connected to the upper shearing device 8, the eccentric crankshaft 3 is installed on the swing frame 9, and the motor 1 drives the eccentric crankshaft 3 to rotate, driving the upper shearing device The device 8 moves and realizes the shearing of the slab together with the lower shearing device 10 . Among them, a guide sleeve 4 and a guide rod 5 are installed between the upper shearing device 8 and the eccentric crankshaft 3; one end of the guide sleeve 4 is rotated and installed on the eccentric crankshaft 3 through a split bearing 11, and the other end is provided with a guide hole 42; the guide rod One end of 5 is provided with a sliding part 62, and a sliding bearing 13 is installed in the guide hole 42. The sliding part 62 is installed in the sliding bearing 13 and slides in the guiding hole 42. The other end of the guide rod 5 is equipped with a push rod 14, and the push rod 14 The upper sleeve is equipped with a clamp 15, and the clamp 15 is fixedly connected with the upper shearing device 8 by bolts; the guide sleeve 4 is provided with a first positioning surface 41, the guide rod 5 is provided with a second positioning surface 61, and the upper shearing device 8 The working height is determined by the distance between the first positioning surface 41 and the second positioning surface 61 .

In this embodiment, two opposite and stacked wedge-shaped blocks 6 are installed between the first positioning surface 41 and the second positioning surface 61; both the first positioning surface 41 and the second positioning surface 61 are in surface contact with the wedge-shaped blocks 6; A two-way hydraulic cylinder 12 is connected to the wedge-shaped block 6; the two wedge-shaped blocks 6 are driven by the two-way hydraulic cylinder 12 to slide between the first positioning surface 41 and the second positioning surface 61 to change the position of the first positioning surface 41 and the second positioning surface. The distance between 61.

In this embodiment, the wedge block 6 is provided with a U-shaped groove, and the guide rod 5 is installed in the U-shaped groove;

In this embodiment, one end of the two-way hydraulic cylinder 12 is fixedly mounted on the guide sleeve 4, and the other end is fixedly mounted with a pin shaft 18; an L-shaped connecting rod 16 is arranged between the wedge block 6 and the two-way hydraulic cylinder 12, and the L-shaped connecting rod 16 One end is installed on the wedge-shaped block 6, and the other end is provided with a bar-shaped hole 17 along the axial direction of the guide rod 5. The pin shaft 18 is connected with the L-shaped connecting rod 16 through the bar-shaped hole 17. When the wedge-shaped block 6 slides left and right, under negative pressure Under the axial tension of the system 7 , the bar-shaped hole 17 slides upward relative to the pin shaft 18 , and the two wedge blocks 6 are closely attached between the first positioning surface 41 and the second positioning surface 61 to realize the positioning of the upper shearing device 8 .

Example 2

The difference between this embodiment and embodiment 1 is that the number of wedge-shaped block 6 is only one, the driving device adopts a single-cylinder hydraulic cylinder, and other structures and connections are the same as in embodiment 1.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should be included in the scope of the claims of the present invention.

Claims (9)

1. An energy-saving pendulum shear for thin slab continuous casting and rolling, characterized in that: a guide sleeve and a guide rod are provided between the upper shear device of the pendulum shear and the eccentric crankshaft; one end of the guide sleeve is rotationally connected with the eccentric crankshaft, The other end is provided with a guide hole; one end of the guide rod is arranged in the guide hole, and is slidably connected with the guide sleeve through the guide hole, and the other end is connected with the upper shearing device; the guide sleeve is provided with a first positioning surface, so that The guide rod is provided with a second positioning surface, and the working height of the upper shearing device is determined by the distance between the first positioning surface and the second positioning surface; the distance between the first positioning surface and the second positioning surface There is a wedge between them; the first positioning surface and the second positioning surface are in contact with the surface of the wedge; a driving device is connected to the wedge; the wedge is driven by the driving device in the first positioning sliding between the first positioning surface and the second positioning surface to change the distance between the first positioning surface and the second positioning surface.
2. The energy-saving pendulum shear for thin slab continuous casting and rolling according to claim 1, wherein a sliding part is provided on the end of the guide rod far away from the upper shearing device; hole and slide in the guide hole.
3. The energy-saving pendulum shear for thin slab continuous casting and rolling according to claim 2, characterized in that: a sliding bearing is arranged in the guide hole, and the sliding part is slidingly matched with the sliding bearing.
4. The energy-saving pendulum shear for thin slab continuous casting and rolling according to claim 2, characterized in that: the wedge-shaped block is provided with a U-shaped groove, and the guide rod is arranged in the U-shaped groove; the U-shaped The width of the groove is smaller than the outer diameter of the sliding part.
5. An energy-saving pendulum shear for thin slab continuous casting and rolling according to claim 1, characterized in that: the guide rod is provided with a push rod near the end of the upper shearing device; the push rod is covered with a clamp, The hoop is fixedly connected with the upper shearing device.
6. An energy-saving pendulum shear for thin slab continuous casting and rolling according to claim 1, characterized in that: one end of the driving device is fixedly connected to the guide sleeve, and the other end is provided with a pin shaft; the wedge-shaped block and There is an L-shaped connecting rod between the driving devices, one end of the L-shaped connecting rod is connected with the wedge block, and the other end is provided with a bar-shaped hole along the axial direction of the guide rod, and the pin shaft is connected with the L-shaped connecting rod through the bar-shaped hole .
7. The energy-saving pendulum shear for thin slab continuous casting and rolling according to claim 1, wherein there is at least one wedge-shaped block, and each wedge-shaped block is connected to a driving device respectively.
8. The energy-saving pendulum shear for thin slab continuous casting and rolling according to claim 7, characterized in that there are a plurality of wedge-shaped blocks, and the plurality of wedge-shaped blocks are stacked along the axial direction of the guide rod, and two adjacent The two wedges are arranged opposite to each other.
9. An energy-saving pendulum shear for thin slab continuous casting and rolling according to claim 1, characterized in that: the guide sleeve is provided with a split bearing away from the end of the upper shearing device, and through the split bearing and the eccentric crankshaft Turn to connect.

Images