CN113231682A

CN113231682A - Green energy-saving pendulum is cut

Info

Publication number: CN113231682A
Application number: CN202110436478.9A
Authority: CN
Inventors: 高爱民; 韩会全; 方建忠; 李永奇
Original assignee: Cisdi Equipment Co ltd; CISDI Technology Research Center Co Ltd
Current assignee: Cisdi Equipment Co ltd; CISDI Technology Research Center Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-08-10

Abstract

The invention belongs to the technical field of continuous casting and rolling of thin slabs, and provides an environment-friendly energy-saving pendulum shear which comprises a transmission system, a shearing hydraulic cylinder, a lower shearing support, an upper shearing device and a fixed frame, wherein a single eccentric crankshaft which is rotationally connected with the fixed frame and is in transmission connection with the transmission system is arranged on the fixed frame, a swinging frame which is rotationally connected with the single eccentric crankshaft and can lift relative to the fixed frame is arranged on the single eccentric crankshaft, a connecting shaft and the lower shearing support are fixedly arranged on the swinging frame, the connecting shaft is provided with the shearing hydraulic cylinder, the shearing hydraulic cylinder is connected with the upper shearing device, and the shearing hydraulic cylinder is used for lifting the upper shearing device relative to the vertical direction of the swinging frame. According to the invention, the transmission path of the shearing force of the pendulum shear is converted from the external force acting on the single eccentric crankshaft into the internal acting force of the swinging frame, so that the transmission system is converted from the traditional method of providing the shearing force, the friction force of the swinging frame and the gravity into the gravity only providing the swinging frame, and the power requirement of the transmission system is greatly reduced.

Description

Green energy-saving pendulum is cut

Technical Field

The invention belongs to the technical field of continuous casting and rolling of hot-rolled strip steel sheet billets, and particularly relates to green energy-saving pendulum shears.

Background

The pendulum shear is an important core device in a thin slab continuous casting and rolling unit and is used for shearing a dummy bar and an intermediate slab. The required shear forces are also very large due to the large thickness and large width of the slabs to be sheared. In the prior art, a transmission system is provided with a high-power motor, a high-torque gear box, a coupling and the like, so that power is provided for a shearing system, and the equipment investment cost and the use cost are very high. Therefore, it is very necessary to explore a new green energy-saving pendulum shear, which can meet the shearing function of the dummy bar and the intermediate billet and reduce the power requirement of the transmission system to reduce the equipment investment cost and the use cost.

Disclosure of Invention

In view of this, the present invention provides an energy-saving pendulum shear, and aims to solve the problem of high production and use costs caused by the large power requirement of the conventional transmission system.

The invention is realized by the following technical scheme:

the invention provides a green energy-saving pendulum shear, which comprises a transmission system, a shearing hydraulic cylinder, a lower shearing support, an upper shearing device and a fixed frame, wherein a single eccentric crankshaft which is rotatably connected with the fixed frame and is in transmission connection with the transmission system is arranged on the fixed frame, a swinging frame which is rotatably connected with the single eccentric crankshaft and can ascend and descend relative to the fixed frame is arranged on the single eccentric crankshaft, a connecting shaft and a lower shearing support which correspond up and down are fixedly arranged on the swinging frame, the connecting shaft is provided with the shearing hydraulic cylinder which is rotatably connected with the connecting shaft, the shearing hydraulic cylinder is connected with the upper shearing device, and the shearing hydraulic cylinder is used for ascending and descending the upper shearing device relative to the vertical direction of the swinging frame.

Furthermore, the transmission system consists of a motor, a first coupler, a gear box and a second coupler which are sequentially connected in a transmission manner, and the second coupler is also connected with the single eccentric crankshaft in a transmission manner.

Furthermore, both ends of the single eccentric crankshaft are arranged on the fixed frame through a bearing seat I.

Furthermore, the two swing frames are symmetrically arranged, the two swing frames are arranged on the single eccentric crankshaft through a bearing seat II, and the axle centers of the bearing seat I and the bearing seat II are not at the same horizontal height.

Furthermore, the middle part of the connecting shaft is provided with a stepped shaft for installing a shearing hydraulic cylinder, and the two ends of the connecting shaft are arranged to be of rectangular structures fixedly connected with the swinging frame.

Further, the shearing device comprises a balance system arranged on two sides of the upper shearing device, one end of the balance system is connected with the swinging frame, and the other end of the balance system is connected with the upper shearing device.

The invention has the advantages that: according to the invention, the transmission path of the shearing force of the pendulum shear is converted from the external force acting on the single eccentric crankshaft into the internal acting force of the swing frame, so that the transmission system is converted from the traditional method of providing the shearing force, the friction force of the swing frame and the gravity into the gravity only providing the swing frame, the power requirement of the transmission system is reduced by more than 90%, the corresponding motor power, the transmission torque of the gear box and the coupling are reduced by more than 90%, and finally, the equipment investment cost and the power use cost of the pendulum shear are greatly reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of an application of the green energy-saving pendulum shear of the present invention;

FIG. 2 is a front view of the swing frame of FIG. 1;

FIG. 3 is a side view of the swing frame of FIG. 1;

FIG. 4 is a schematic structural view of the connecting shaft in FIG. 1, wherein a is a front view and b is a sectional view taken along line A-A in a;

reference numerals: the device comprises a motor 1, a first coupler 2, a gear box 3, a second coupler 4, a first bearing seat 5, a single eccentric crankshaft 6, a shearing hydraulic cylinder 7, a connecting shaft 8, a second bearing seat 9, a swinging frame 10, a lower shearing support 11, an upper shearing device 12, a balance system 13 and a fixed frame 14.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

As shown in fig. 1-3, the green energy-saving pendulum shear of the present embodiment mainly includes: the device comprises a transmission system, a fixed frame 14, a swinging frame 10, a single eccentric crankshaft 6, a shearing hydraulic cylinder 7, an upper shearing device 12 and a lower shearing support 11, wherein the transmission system mainly comprises a motor 1, a first coupling 2, a gear box 3 and a second coupling 4, the fixed frame 14 is provided with the single eccentric crankshaft 6 which is rotatably connected with the fixed frame and is in transmission connection with the second coupling 4 of the transmission system, the single eccentric crankshaft 6 is provided with the swinging frame 10 which is rotatably connected with the single eccentric crankshaft and can ascend and descend relative to the fixed frame 14, the swinging frame 10 is fixedly provided with a connecting shaft 8 and a lower shearing support 11 which are vertically corresponding, the connecting shaft 8 is provided with the shearing hydraulic cylinder 7 which is rotatably connected with the connecting shaft 8, the shearing hydraulic cylinder 7 is connected with the upper shearing device 12, and the shearing hydraulic cylinder 7 lifts the upper shearing device 12 relative to the swinging frame 10 in the vertical direction. In this way, the transmission path of the shearing force of the pendulum shear is converted from the external force acting on the single eccentric crankshaft into the internal acting force of the swing frame system, so that the power requirement of the transmission system is greatly reduced, namely, compared with the traditional scheme, the corresponding power and the input and output torque of the motor 1 and the gear box 3 in the transmission system are both reduced by more than 90%. In addition, when the intermediate blank needs to be cut, the single eccentric crankshaft can be driven to rotate to realize that the swinging frame is lifted relative to the fixed frame, so that the intermediate blank is lifted to avoid damage to the front and rear input and output roller ways. Compared with a transmission scheme, power for shearing the intermediate blank is not provided.

Both ends of the single eccentric crankshaft 6 in this embodiment are provided on the fixed frame 14 through a bearing housing one 5. Therefore, the bearing seat I5 is provided with two pieces which are symmetrically arranged along the central line and used for installing and fixing the single eccentric crankshaft 6 on the fixed frame 14 and providing support for the single eccentric crankshaft 6, namely, the two ends of the single eccentric crankshaft 6 are respectively provided with the installation positions of the bearing seat I5 and can be installed and fixed on the fixed frame 14 through the bearing seat I5. Meanwhile, the middle part of the single eccentric crankshaft 6 is symmetrically provided with two eccentric mounting positions of the second bearing seat 9, and the swing frame 10 can be mounted through the second bearing seat 9, namely the first bearing seat 5 and the second bearing seat 9 are not at the same horizontal height, so that the swing frame 10 can be driven to lift under the transmission of the motor 1. Compared with the traditional scheme, the installation position of the shearing hydraulic cylinder is cancelled.

The fixed frame 14 in this embodiment is of welded steel construction type for providing support for the swing frame 10 and the single eccentric crank shaft 6, etc. The swinging frame is also in a welding steel structure type, is provided with two parts which are symmetrically arranged, is connected with the single eccentric crankshaft 6 through a second bearing seat 9 and can lift and swing around the single eccentric crankshaft 6; and a mounting position of the connecting shaft 8 is arranged below the second bearing seat 9, a clamping groove (not marked) for guiding the upper shearing device 12 is arranged in the middle of the second bearing seat, and a mounting position of the lower shearing support 11 is arranged at the lower part of the second bearing seat. The connecting shaft 8 is used for installing the shearing hydraulic cylinder 7, the lower shearing support 11 is used for installing a lower shearing blade, the middle blank is sheared, and the middle blank is installed and fixed at the lower installation position of the swinging frame 10 through bolts. Therefore, the lower shearing force is transmitted to the swinging frame 10 and acts together with the connecting shaft 8, and finally the upper shearing force and the lower shearing force are mutually offset in the swinging frame 10 without transmitting the acting force to the single eccentric crankshaft 6. Compared with the traditional scheme, the swing frame is additionally provided with a connecting shaft mounting position below the second bearing seat.

In this embodiment, the upper part of the shearing hydraulic cylinder 7 is connected with the connecting shaft 8 by a split bearing, and the lower part is provided with an arc push rod for driving the upper shearing device 12 to shear the intermediate billet, which is not limited to this structure, but also can adopt an intermediate hinge shaft or bottom installation structure.

In the present embodiment, a balance system 13 is provided on both sides of the upper shearing device 12, and one end of the balance system 13 is connected to the swing frame 10 and the other end is connected to the upper shearing device 12. That is, the upper shearing device 12 is connected with the hydraulic cylinder of the balance system 13 through the wing plates (not marked) at the two sides thereof, the upper part is driven by the shearing hydraulic cylinder 7, the wing plates at the two sides are matched with the middle clamping groove of the swing frame 10 to realize guiding, and the lifting and the descending can be driven by the balance system 13 and the shearing hydraulic cylinder 7 together, so that the shearing function of the hot rolled plate blank is completed. Meanwhile, the two balance systems 13 are symmetrically arranged on two sides of the central line and respectively connected with wing plates on two sides of the upper shearing device 12, and are used for providing support for the upper shearing device and simultaneously ensuring that the upper shearing edge of the upper shearing device 12 is kept horizontal in the shearing process, so that the shearing quality is prevented from being influenced.

As shown in fig. 4, a stepped shaft is provided in the middle of the connecting shaft in the present embodiment for mounting the shearing hydraulic cylinder 7; the two ends of the swing frame are of rectangular structures, are matched with the mounting positions on the swing frame 10 and are fixedly mounted through bolts, and the swing frame is not limited to the structure and can be specifically arranged according to a hydraulic cylinder structure.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a green energy-saving pendulum is cut, includes transmission system, shearing pneumatic cylinder (7), lower shearing support (11), goes up shearing mechanism (12) and fixed frame (14), its characterized in that, be equipped with on the fixed frame with it rotate single eccentric bent axle (6) of being connected and being connected with the transmission of transmission system, be equipped with on the single eccentric bent axle with it and rotate swing frame (10) of being connected and can going up and down for the fixed frame, fixed mounting has connecting axle (8) and lower shearing support that are correspondence from top to bottom on the swing frame, be equipped with on the connecting axle with it and rotate the shearing pneumatic cylinder of being connected, the shearing pneumatic cylinder is connected with last shearing mechanism, and by the shearing pneumatic cylinder is to last shearing mechanism and is done the lift action for the vertical direction of swing frame.

2. A green energy-saving pendulum shear as claimed in claim 1, wherein the transmission system is composed of a motor (1), a first coupling (2), a gear box (3) and a second coupling (4) which are in transmission connection in sequence, and the second coupling is further in transmission connection with a single eccentric crankshaft.

3. A green energy-saving pendulum shear as claimed in claim 1, wherein both ends of the single eccentric crankshaft are disposed on the fixed frame through a bearing seat I (5).

4. The green energy-saving pendulum shear of claim 3, wherein the number of the swing frames is two, and the two swing frames are both arranged on the single eccentric crankshaft through a second bearing seat (9), and the first bearing seat and the second bearing seat are not at the same horizontal height.

5. The green energy-saving pendulum shear of claim 1, wherein the middle part of the connecting shaft is provided with a stepped shaft for installing a shearing hydraulic cylinder, and two ends of the connecting shaft are arranged to be in a rectangular structure fixedly connected with the swinging frame.

6. A green energy-saving pendulum shear as claimed in any one of claims 1 to 5, further comprising a balancing system (13) disposed on both sides of the upper shear device, wherein one end of the balancing system is connected to the pendulum frame and the other end is connected to the upper shear device.