CN216679553U - Hot rolling slab pendulum shear hydraulic balance system - Google Patents
Hot rolling slab pendulum shear hydraulic balance system Download PDFInfo
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- CN216679553U CN216679553U CN202122904222.4U CN202122904222U CN216679553U CN 216679553 U CN216679553 U CN 216679553U CN 202122904222 U CN202122904222 U CN 202122904222U CN 216679553 U CN216679553 U CN 216679553U
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Abstract
The utility model relates to a hydraulic balance system for pendulum shear of a hot-rolled slab, belonging to the technical field of continuous casting and rolling of hot-rolled sheet billets, comprising a swinging frame and an upper shear blade support which can move along the swinging frame, wherein two ends of the upper shear blade support are provided with connecting parts extending out of the swinging frame; the upper end of the swing frame is movably connected with a crankshaft of the pendulum shears, the inner side of the lower end of the swing frame is fixedly connected with the lower shearing device, and the outer side of the lower end of the swing frame is provided with a hydraulic jacking device; the hydraulic jacking device comprises a jacking hydraulic cylinder and a hydraulic cylinder support, the hydraulic cylinder support is fixedly connected with the swing frame, the jacking hydraulic cylinder is hinged to the hydraulic cylinder support through a hinge shaft positioned in the middle of the jacking hydraulic cylinder, and the upper end of the jacking hydraulic cylinder is hinged to the middle of a cross beam positioned between the two connecting parts. The swing frame can bear the acting force from the upper shear blade support in the whole width range, and does not need to be provided with large-size avoidance holes, so that the bearing capacity of the swing frame is improved, the size of the swing frame is reduced, and the investment cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of continuous casting and rolling of hot rolled sheet billets, and relates to a pendulum shear hydraulic balance system for a hot rolled slab.
Background
When the hot rolled slab pendulum shear adopted in the hot rolled thin slab continuous casting and rolling technology works, the problem is that the slab thickness is large, the shearing force is also very large, generally more than 1500 tons, and because the upper shear blade adopts a movable structure, the situation of unbalanced stress can exist in the shearing process, and further the undesirable shearing state such as inclination, local excessive stress deformation and the like is caused, the shearing mechanism is damaged, and the shearing effect is also influenced. Therefore, a special hydraulic balance system is required to be arranged for controlling the levelness of the upper cutting edge in real time.
The existing hydraulic balance system is arranged above a hot-rolled plate blank, the temperature of the hot-rolled plate blank is up to over 1000 ℃, high-temperature radiation and rising high-temperature air flow of the hot-rolled plate blank can affect the hydraulic balance system, the failure rate of the system is increased, and the service life of the system is shortened. Meanwhile, in order to realize the connection between the balance system and the upper shearing device, a large-sized waist-shaped long hole needs to be formed in the middle of the swing frame, so that the swing frame bears more than 1000 tons of acting force with only half of the size, the structural design of the swing frame is very large, and the investment cost is increased.
Therefore, it is very necessary to find a hydraulic balance system for hot rolling slab swing shear, which can prevent the hot rolling slab from being subjected to high temperature radiation while having a shearing function, and simultaneously prevent the swing frame from being provided with large-sized holes inside, thereby reducing the size of the swing frame and reducing the investment cost.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a hydraulic balance system for hot rolling slab pendulum shears, so as to avoid forming a large-sized hole on a pendulum frame, reduce the size of the pendulum frame, and reduce the investment cost.
In order to achieve the purpose, the utility model provides the following technical scheme:
a hot-rolled plate blank pendulum shear hydraulic balance system comprises a swinging frame and an upper shear blade support which are oppositely arranged, wherein the upper shear blade support can move along the swinging frame; the upper end of the swing frame is movably connected with a crankshaft of the swing shear, the inner side of the lower end of the swing frame is fixedly connected with the lower shearing device, and the outer side of the lower end of the swing frame is provided with a hydraulic jacking device; the hydraulic jacking device comprises a jacking hydraulic cylinder and a hydraulic cylinder support, the hydraulic cylinder support is fixedly connected with the swing frame, the jacking hydraulic cylinder is hinged to the hydraulic cylinder support through a hinge shaft located in the middle of the jacking hydraulic cylinder, and the upper end of the jacking hydraulic cylinder is hinged to the middle of a cross beam located between the two connecting portions.
Optionally, the jacking hydraulic cylinder is located below the hot rolled slab.
Optionally, the connecting portion is disposed at a lower half portion of the upper shear blade support, and one end of the connecting portion, which is far away from the upper shear blade support, is bent downward so that the jacking hydraulic cylinder is located below the hot-rolled slab.
Optionally, displacement sensors are arranged on the two jacking hydraulic cylinders and connected with a control system of the pendulum shears so as to control the levelness and the stress state of the upper shear blade by accurately controlling the stretching amount of the jacking hydraulic cylinders in real time.
Optionally, the pendulum frame is connected to a crankshaft of the pendulum shear via a slide bearing.
Optionally, guide rails slidably engaged with the upper shear blade support are disposed on two sides of the middle portion of the swing frame.
Optionally, the cross beam and the connecting portion are connected through a key.
The utility model has the beneficial effects that: the jacking hydraulic cylinder is arranged below the hot-rolled plate blank, so that the influence of high-temperature radiation and rising high-temperature airflow from the hot-rolled plate blank on the jacking hydraulic cylinder is avoided, the fault rate of the system is reduced, and the stability of the system is improved; compared with the prior art, the swing frame has the advantages that the large-size waist-shaped long hole formed in the middle of the swing frame is eliminated, the structure of the upper shear blade support is changed, the swing frame is integrally located in the middle of the upper shear blade support, acting force from the upper shear blade support can be borne by the swing frame within the whole width range of the swing frame, the bearing capacity of the swing frame is improved, the size of the swing frame is reduced, and investment cost is reduced.
Additional advantages, objects, and features of the utility model 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 utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a front view of a hydraulic balancing system;
FIG. 2 is a side view of the hydraulic balancing system;
FIG. 3 is a top view of the hydraulic balancing system;
FIG. 4 is a front view of the hydraulic jacking apparatus;
FIG. 5 is a side view of a hydraulic jacking apparatus;
FIG. 6 is a schematic structural view of the swing frame;
figure 7 is a front view of the upper cutting edge support;
figure 8 is a top plan view of the upper cutting edge support;
fig. 9 is a schematic diagram of an application of the hydraulic balancing system.
Reference numerals: the hydraulic lifting device comprises a hydraulic lifting device 1, a swinging frame 2, an upper shear blade support 3, a cross beam 4, a key 6, a first hinge shaft 11, a lifting hydraulic cylinder 12, a hydraulic cylinder support 13, a displacement sensor 14, an upper bearing seat 21, a frame body 22, a guide rail 23, a connecting part 31, a swinging frame matching position 32, an upper shear blade installation position 33, a crankshaft 71, a fixed frame 72, a tail pressing device 73, an upper shearing device 74, a lower shearing device 75 and a hydraulic balance system 76.
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 utility model 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.
Wherein the showings are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the utility model thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 9, a hydraulic balance system 76 for pendulum shear of a hot-rolled slab includes a pendulum frame 2 and an upper shear blade support 3 located above the hot-rolled slab and capable of moving along the pendulum frame 2, the two ends of the upper shear blade support 3 are provided with pendulum frame matching positions 32, and the upper shear blade support 3 is slidably connected with the pendulum frame 2 through the pendulum frame matching positions 32; the upper shear blade support 3 is provided with a connecting part 31 extending out of the swing frame 2 at the outer side of the swing frame matching position 32 at the two ends; an upper shear blade mounting position 33 is arranged in the middle of the lower side of the upper shear blade support 3, and the upper shear blade support 3 is fixedly connected with the upper shear blade support 3 through the upper shear blade mounting position 33; the upper end of the swing frame 2 is movably connected with a crankshaft 71 of the swing shear, the inner side of the lower end is fixedly connected with a lower shearing device 75, and the outer side of the lower end is provided with a hydraulic jacking device 1; the crankshaft 71 is an eccentric crankshaft, and both ends are supported on the fixed frame 72; the upper side of the upper shear blade support 3 is provided with a tail pressing device 73, and the lower side is connected with the upper shear blade; the hydraulic jacking device 1 comprises a jacking hydraulic cylinder 12 and a hydraulic cylinder support 13, the hydraulic cylinder support 13 is fixedly connected with the swing frame 2, the jacking hydraulic cylinder 12 is hinged on the hydraulic cylinder support 13 through a second hinge shaft positioned in the middle of the jacking hydraulic cylinder 12, and the upper end of the jacking hydraulic cylinder is hinged in the middle of the cross beam 4 positioned between the two connecting parts 31 through a first hinge shaft 11.
The swing frame 2 can bear the acting force from the upper shear blade support 3 in the whole width range, and a large-size cavity is not required to be formed in the middle of the swing frame 2, so that the bearing capacity of the swing frame 2 is improved, the size of the swing frame 2 is reduced, and the investment cost is reduced.
In order to solve the influence of high-temperature radiation and rising high-temperature air flow on a pendulum shear hydraulic balance system, the jacking hydraulic cylinder 12 is arranged below the hot-rolled plate blank.
Alternatively, the connecting portion 31 is disposed at the lower half portion of the upper shear blade support 3, and one end away from the upper shear blade support 3 is bent downward so that the jacking cylinder 12 is located below the hot-rolled slab.
Optionally, displacement sensors 14 are arranged on the two jacking hydraulic cylinders 12, and the displacement sensors 14 are connected with a control system of the pendulum shears to realize control of levelness and stress state of the upper shear blade by real-time accurate control of the telescopic amount of the jacking hydraulic cylinders 12.
Optionally, the pivoting frame 2 is connected to the crankshaft 71 of the pendulum shear via a plain bearing.
Optionally, the two sides of the middle part of the swing frame 2 are provided with guide rails 23 which are in sliding fit with the upper shear blade support 3.
Optionally, the cross beam 4 and the connecting portion 31 are connected by a key 6.
According to the utility model, the jacking hydraulic cylinder 12 is arranged below the hot-rolled plate blank, so that the influence of high-temperature radiation and rising high-temperature airflow is avoided; compared with the prior art, the large-size waist-shaped long hole formed in the middle of the swing frame is eliminated, the structure of the upper shear blade support 3 is changed, the swing frame 2 is integrally located in the middle of the upper shear blade support 3, the swing frame 2 can bear acting force in the whole width range, the bearing capacity of the swing frame 2 is improved, the size of the swing frame 2 is reduced, and the investment cost is reduced.
Examples
A hydraulic balance system 76 for swing shearing of a hot-rolled plate blank mainly comprises a hydraulic jacking device 1, a swing frame 2, an upper shearing edge support 3 and a cross beam 4, is used for jacking an upper shearing device 74 and keeping the upper shearing device 74 in a horizontal state under the control of a displacement sensor 14.
Hydraulic pressure jacking device 1 mainly includes: the device comprises a first hinge shaft 11, a second hinge shaft, a jacking hydraulic cylinder 12, a hydraulic cylinder support 13 and a displacement sensor 14; two groups are arranged, symmetrically arranged at the lower parts of two sides of the swinging frame 2 and used for providing power for the jacking upper shearing device 74.
The first articulated shaft 11 is installed on the top of the jacking hydraulic cylinder 12 and is connected with the cross beam 4 through the first articulated shaft 11 for transmitting the acting force to the upper shear blade support 3.
The jacking hydraulic cylinder 12 adopts a structural form that a hinge shaft is arranged in the middle of the jacking hydraulic cylinder 12, the jacking hydraulic cylinder 12 is hinged on a hydraulic cylinder support 13 through a second hinge shaft arranged in the middle of the jacking hydraulic cylinder, and the hydraulic cylinder support 13 is installed on the swinging frame 2 and is arranged below the surface of the hot-rolled plate blank, so that the influence of high-temperature radiation and rising high-temperature air flow is avoided.
The displacement sensor 14 is installed at the tail part of the jacking hydraulic cylinder 12 and is connected with a control system of the pendulum shear to realize the accurate control of the stretching of the jacking hydraulic cylinder 12, so that the levelness of the shear blade is controlled, and the stress state of the shear blade is adjusted.
The swing frame 2 mainly includes: an upper bearing housing 21, a frame body 22, and a guide rail 23; two groups are arranged, symmetrically arranged on two sides of the shearing device, used for lifting the lower shearing edge and providing support for the hydraulic balance system 76.
The top of the frame body 22 is matched with the upper bearing seat 21 and connected with the upper bearing seat through bolts; the two sides of the middle part are provided with guide rails 23 which are used for matching with the upper shear blade support 3 and providing guidance; the inner side of the lower part is connected with a lower shearing device 75; the outer side of the lower part is provided with a counter bore matched with the hydraulic jacking device 1.
The upper bearing seat 21 is of a split structure, and a split sliding bearing is arranged at the position of a shaft hole.
The guide rail 23 is made of bronze, and is provided with four parts which are respectively installed at the guide rail installation positions of the two swing frame bodies 22 and used for being matched with the upper shear blade support 3 and providing guidance.
The upper shear blade support 3 is arranged in the middle of the swinging frame body 2, and the outermost sides of the two sides are provided with installation matching positions matched with the cross beam 4; the two sides are provided with matching positions matched with the guide rails 23 of the swing frame 2; the lower part is provided with an upper shear blade mounting position 33; used for providing support for the upper shear blade and lifting up and down along the swing frame 2 under the action of the hydraulic jacking device 1.
Mounting matching positions matched with the upper shear blade support 3 are arranged at two ends of the cross beam 4, and the cross beam 4 is connected with the upper shear blade support 3 through a key 6 and used for transferring acting force; the middle part is equipped with the installation cooperation position with hydraulic pressure jacking device 1, realizes the transmission of effect through first articulated shaft 11 between crossbeam 4 and the hydraulic pressure jacking device 1.
The working principle of the utility model is as follows: in the process of shearing a hot-rolled plate blank, a jacking hydraulic cylinder 12 in a hydraulic jacking device 1 exerts an upward acting force on a cross beam 4 through a first hinge shaft 11, the cross beam 4 transmits the acting force to an upper shear blade support 3, if the upper shear blade support 3 is stressed unevenly, the upper shear blade will be inclined, a displacement sensor 14 can detect position information in real time, the upper shear blade is corrected by controlling the expansion amount of the jacking hydraulic cylinder 12, and the levelness of the upper shear blade can be ensured all the time; the swing frame 2 always provides support for the hydraulic jacking device 1 and provides guidance for the lifting of the upper shear blade support 3.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a hot rolling slab pendulum cuts hydraulic balance system which characterized in that: the device comprises a swinging frame and an upper shear blade support which are oppositely arranged, wherein the upper shear blade support can move along the swinging frame; the upper end of the swing frame is movably connected with a crankshaft of the swing shear, the inner side of the lower end of the swing frame is fixedly connected with the lower shearing device, and the outer side of the lower end of the swing frame is provided with a hydraulic jacking device; the hydraulic jacking device comprises a jacking hydraulic cylinder and a hydraulic cylinder support, the hydraulic cylinder support is fixedly connected with the swing frame, the jacking hydraulic cylinder is hinged to the hydraulic cylinder support through a hinge shaft located in the middle of the jacking hydraulic cylinder, and the upper end of the jacking hydraulic cylinder is hinged to the middle of a cross beam located between the two connecting portions.
2. The hot rolled slab pendulum shear hydraulic balancing system of claim 1, wherein: the jacking hydraulic cylinder is positioned below the hot-rolled plate blank.
3. The pendulum shear hydraulic balance system of claim 1, wherein: the connecting part is arranged at the lower half part of the upper shear blade support, and one end of the connecting part, which is far away from the upper shear blade support, is bent downwards so that the jacking hydraulic cylinder is positioned below the hot rolled slab.
4. The hot rolled slab pendulum shear hydraulic balancing system of claim 1, wherein: and displacement sensors are arranged on the two jacking hydraulic cylinders and are connected with a control system of the pendulum shear so as to realize the control of the levelness and the stress state of the upper shear blade by accurately controlling the telescopic amount of the jacking hydraulic cylinders in real time.
5. The hot rolled slab pendulum shear hydraulic balancing system of claim 1, wherein: the swing frame is connected with a crankshaft of the pendulum shear through a sliding bearing.
6. The hot rolled slab pendulum shear hydraulic balancing system of claim 1, wherein: and guide rails in sliding fit with the upper shear blade support are arranged on two sides of the middle part of the swinging frame.
7. The hot rolled slab pendulum shear hydraulic balancing system of claim 1, wherein: the cross beam is connected with the connecting part through a key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122904222.4U CN216679553U (en) | 2021-11-24 | 2021-11-24 | Hot rolling slab pendulum shear hydraulic balance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122904222.4U CN216679553U (en) | 2021-11-24 | 2021-11-24 | Hot rolling slab pendulum shear hydraulic balance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216679553U true CN216679553U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122904222.4U Active CN216679553U (en) | 2021-11-24 | 2021-11-24 | Hot rolling slab pendulum shear hydraulic balance system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216679553U (en) |
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2021
- 2021-11-24 CN CN202122904222.4U patent/CN216679553U/en active Active
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