Self-induction type roller slag scraping and cleaning device

Abstract

The invention belongs to the field of hot rolling steel rolling equipment, and relates to a self-induction type roller slag scraping and cleaning device which comprises slag scraping devices arranged on the two sides of a roller in pairs, and each slag scraping device comprises a scraping plate arranged towards the roller in a sliding mode and a driving device used for driving the scraping plate to slide so as to control the acting force of the scraping plate on the roller. The structure is configured in pairs, single-side selection use can be achieved, it is ensured that the falling direction of iron scraps is always downward when the roller rotates forwards and backwards, and the contact pressure of the scraper and the roller is jointly controlled through the pressure spring and the hydraulic cylinder so that the self-adaptive adjusting capacity can be achieved; the situation that the roller is damaged due to the fact that iron scraps cannot be scraped or the pressure of the scraper on the roller is too large can be avoided.

Description

Technical Field

[0001] The invention belongs to the field of hot rolling steel rolling equipment and relates to a self-inductive roller slag scraping and cleaning device on a hot rolling line. Background Art

[0002] In the steel rolling process, the roller, as the core working component of the rolling mill, undertakes the important task of causing continuous plastic deformation of the metal. It will be subjected to huge rolling force during the rolling process. The accuracy of its size and good surface quality directly affect the final quality of the rolled product. Therefore, ensuring the good surface quality of the roller in the rolling process is an extremely important link.

[0003] However, in the field of hot rolling, due to the combined effects of the high temperature of the billet and the cooling water of the equipment, a large amount of iron scale often adheres to the surface of the roll, which will aggravate the wear of the roll surface and greatly shorten the service life of the roll; increasing the rolling force leads to increased energy consumption and will also cause greater load on the rolling mill equipment; uneven wear and local thermal stress concentration may also cause fatigue cracks on the roll, further reducing the service life of the roll. How to effectively remove the iron scale attached to the roll is currently a more difficult problem in the field of hot rolling. At present, the method of using compressed air to blow and scrape the roll has problems such as unclear scraping effect and low resource utilization; and during the rolling process, the blowing and scraping effect will further deteriorate after the roll diameter wears and changes, which cannot meet the needs of efficient and stable rolling production.

[0004] In view of the above situation, it is very necessary to propose a self-sensing roller scraping and cleaning device to improve the various adverse effects on the rollers during the rolling process, so as to improve the rolling efficiency and product quality, reduce production costs, and promote the continuous advancement of steel rolling technology. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a self-sensing roller scraping and cleaning device, which can set different scraping pressures according to requirements, and the electrical system can adjust itself when the roller diameter changes, so as to keep the set scraping pressure relatively stable and reduce manual input to solve the problems raised in the background technology.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A self-inductive roller scraping and cleaning device comprises scraping devices arranged in pairs on both sides of the roller, each of the scraping devices comprises a scraper arranged to slide toward the roller and a driving device for driving the scraper to slide, so as to control the force of the scraper on the roller.

[0008] Furthermore, the driving device drives the scraper at the far end along the rotation direction of the roller to contact the roller, and drives the scraper at the near end along the rotation direction of the roller to separate from the roller.

[0009] Furthermore, the scraper device further comprises a traverse trolley and a scraper clamping device arranged to slide toward the roller, one end of the traverse trolley is connected to the driving device, and the other end is connected to the scraper clamping device, the scraper is fixedly mounted on the scraper clamping device, at least three guide sleeves are provided on the traverse trolley, and a guide column matching the guide sleeve is provided on the scraper clamping device, and the guide column is inserted into the guide sleeve, so that the traverse trolley is directional and slidably connected to the scraper clamping device;

[0010] A first pressure spring is provided in the guide sleeves at the left and right edges of the transverse moving trolley, and a second pressure spring and a pressure sensor are provided in the middle guide sleeve of the transverse moving trolley. The total length of the first pressure spring is equal to the sum of the lengths of the second pressure spring and the pressure sensor body, so as to provide pressure toward the roller to the scraper clamping device and detect the pressure between the scraper and the roller. The driving device is controlled in linkage with the pressure sensor to control the force of the scraper on the roller, thereby keeping the force relatively stable.

[0011] Furthermore, the scraping device also includes a fixed frame, which is fixedly installed on the external rolling mill arch, and the fixed frame is provided with wheel tracks arranged along the radial direction of the roller, and the transverse trolley is provided with wheels matching the wheel tracks, so that the transverse trolley is arranged to slide along the radial direction of the roller, and the end of the driving device away from the transverse trolley is hinged to the fixed frame.

[0012] Furthermore, after the wheel is placed on the frame wheel track, a gap is left between the upper end of the wheel and the wheel track to prevent the wheel from getting stuck during operation.

[0013] Furthermore, a chain is provided between the transverse trolley and the scraper clamping device to prevent the scraper clamping device from slipping during the lifting process.

[0014] Furthermore, the scraping device also includes an electrical control system, and the electrical control system is respectively connected to the pressure sensor and the driving device so that the driving device and the pressure sensor are controlled in linkage.

[0015] Furthermore, the driving device is a hydraulic cylinder, and a displacement sensor is provided in the hydraulic cylinder so that the electrical control system can control the extension and retraction amount of the hydraulic cylinder.

[0016] Furthermore, the shape of the scraper matches the hole shape of the roller so that the scraper fits tightly with the roller. The material of the scraper is a wear-resistant material with a hardness less than that of the roller, preferably a copper-based alloy.

[0017] Furthermore, a scrap iron collecting frame is arranged below the roller, and water leakage holes are opened at the bottom and side walls of the scrap iron collecting frame to prevent water accumulation.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention provides a self-sensing roller scraping and cleaning device, which is configured in pairs and can be used unilaterally to ensure that the iron chips always fall downward when scraping the roller in different rotation directions; the contact pressure between the scraper and the roller is controlled by a pressure spring to form an adaptive adjustment capability, which can avoid the situation where the iron chips cannot be scraped or the scraper exerts too much pressure on the roller and damages the roller.

[0020] 2. The self-sensing roller scraping and cleaning device is also provided with a pressure sensor and a displacement sensor. The pressure change of the pressure sensor can be converted into the deformation of the pressure spring. Under the detection and feedback of the displacement sensor built into the hydraulic cylinder, the extension and contraction amount of the hydraulic cylinder can be controlled to be equivalent to the deformation of the pressure spring, so that the scraping pressure of the scraper relative to the roller is always at a relatively stable set pressure.

[0021] 3. The present invention adopts a fixed frame with a hydraulic cylinder and a transverse trolley, which is reliable and ingenious, easy to install, and can set different installation angles for different rolling mills to prevent movement interference with other equipment; the scraper clamping device and the scraper have a simple structure, are reliable and practical, can be quickly disassembled and assembled, can improve production capacity, improve labor intensity, and increase economic benefits; a swarf collection frame is provided to collect swarf for reuse, which can improve the comprehensive utilization rate and yield rate of steel compared to the traditional method of placing it in a slag flushing ditch.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 A cross-sectional view of a self-inductive roller scraping and cleaning device of the present invention in the working state when the roller rotates counterclockwise;

[0025] Figure 2 A cross-sectional view of a self-inductive roller scraping and cleaning device of the present invention in the working state when the roller rotates clockwise;

[0026] Figure 3 It is a front view of the single-side scraping device of the present invention;

[0027] Figure 4 A top view of a single-side scraping device in the present invention;

[0028] Figure 5 It is a left side view of the single-side scraping device of the present invention;

[0029] Figure 6 A cross-sectional view showing the relationship between the transverse wheel and the wheel track in the fixed frame in the present invention;

[0030] Figure 7 for Figure 4 A partial enlarged view of point Ⅰ in the middle.

[0031] Figure numerals: slag scraper device on the inlet side of the rolling mill 1, iron chip collecting frame 2, slag scraper device on the outlet side of the rolling mill 3, fixed frame 4, hydraulic cylinder 5, hexagon socket screw 6, bolt for shaft end baffle 7, oil cup 8, shaft end baffle 9, connecting pin 10, transverse trolley 11, wheel 12, spring adjustment gasket 13, first pressure spring 14, chain 15, second pressure spring 16, pressure sensor 17, scraper clamping device 18, hinged bolt 19, scraper 20, guide sleeve 21, guide column 22, roller 23. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order 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 actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] See also Figure 1 to Figure 7 , which is a self-inductive roller scraping and cleaning device, comprising a scraping device 1 at the inlet side of a rolling mill, an iron scale collecting trough 2 and a scraping device 3 at the outlet side of the rolling mill, wherein the scraping device 1 at the inlet side of the rolling mill and the scraping device 3 at the outlet side of the rolling mill are arranged in pairs on both sides of the rolling roll 23 and arranged toward the rolling roll 23, and the iron scale collecting trough 2 is arranged below the rolling roll 23 to collect iron scale;

[0036] like Figure 1 As shown, when the roll rotates counterclockwise, the scraper device 1 at the inlet side of the rolling mill drives the traverse trolley 11, the scraper clamping device 18 and the scraper 20 to retreat along the wheel track of the fixed frame 4 under the action of the hydraulic cylinder 5, so that the scraper 20 is completely separated from the roll surface and maintains a certain distance; the scraper device 3 at the outlet side of the rolling mill makes the scraper 20 contact with the roll under the action of the hydraulic cylinder 5, the spring adjustment gasket 13 and the first pressure spring 14 and the second pressure spring 16, and the scraper 20 forms a certain pressure on the roll surface, which can effectively help the scraper 20 scrape off the iron shavings attached to the roll, and the pressure value can be displayed by the pressure sensor 17. Of course, the pressure value is not absolute, and the above pressure value can be appropriately adjusted and changed for steel billets of different materials and specifications.

[0037] When the roller rotates counterclockwise, the iron chips attached to the roller do not come into contact with the scraper device 1 at the inlet side of the rolling mill during the roller rotation process. During the continuous rotation process, the iron chips come into contact with the scraper device 3 at the outlet side of the rolling mill. Since there is a certain pressure between the scraper 20 and the roller, there is no gap between the scraper 20 and the roller at this time, so the iron chips will act on the roller during the rotation process. Figure 1 The slag is scraped to the lower left of the scraper 20 of the scraper device 3 at the outlet of the rolling mill, and falls into the iron scale collection frame 2 below.

[0038] like Figure 2As shown in FIG. 1 , when the roller rotates clockwise, the scraper device 3 at the outlet of the rolling mill also drives the traverse trolley 11, the scraper clamping device 18 and the scraper 20 to retreat along the wheel track of the fixed frame 4 under the action of the hydraulic cylinder 5, so that the scraper 20 is completely separated from the roller surface and maintains a certain distance. Figure 1 The same method of the scraper device 3 at the outlet side of the intermediate rolling mill enables the scraper 20 to act on the roll under a certain pressure.

[0039] Preferably, the scraper device 1 at the inlet side of the rolling mill and the scraper device 3 at the outlet side of the rolling mill in this embodiment are both arranged at the lower part of the rolling roller, so that the iron scale scraped off by the scraper 23 can quickly fall into the iron scale scraper collecting trough 2. The scraper cleaning device can adjust the angle between the scraper and the horizontal plane of the rolling roller according to the characteristics of the rolling mill arch and other equipment beside the mill to adapt to different equipment; the scraper frequency can be modified and adjusted according to the rolling working system and the billet conditions, so as to minimize the wear and consumption of the scraper.

[0040] When the roller rotates clockwise, the iron chips attached to the roller do not come into contact with the scraper device 3 at the outlet of the rolling mill during the rotation of the roller. During the continuous rotation, the iron chips come into contact with the scraper device 1 at the inlet of the rolling mill. Since there is a certain pressure between the scraper 20 and the roller, there is no gap between the scraper 20 of the scraper device 1 at the inlet of the rolling mill and the roller at this time, so the iron chips will act on the roller during the rotation. Figure 2 The slag is scraped to the lower right of the scraper 20 of the scraper device 1 at the entrance of the rolling mill, and falls into the iron scale collection frame 2 below.

[0041] like Figure 3 , Figure 4 and Figure 5 As shown, the fixed frame 4 is fixed to the mill arch by the hexagon socket screw 6 to serve as the fixed base point of the self-sensing roller scraper cleaning device, and the other components are moved and adjusted on this basis. The head and tail of the hydraulic cylinder 5 are respectively hinged to the traverse trolley 11 and the fixed frame 4 through the shaft end baffle bolt 7, the shaft end baffle 9, and the connecting pin 10, so that the wheel 12 on the traverse trolley 11 can be directional moved along the wheel track of the fixed frame 4.

[0042] Preferably, the connecting pin 10 is equipped with an oil cup 8, which can lubricate the hinge of the hydraulic cylinder 5, improve the use of the equipment and increase its service life. Figure 7 shown.

[0043] like Figure 6 As shown, the wheel 12 is placed on the wheel track of the fixed frame 4, and a certain gap is left between the upper end and the wheel track to prevent the wheel from getting stuck during operation.

[0044] Furthermore, the guide sleeves 21 at the left and right edges of the front end of the transverse movement trolley 11 are provided with spring adjustment gaskets 13 and a first pressure spring 14, and the middle guide sleeve 21 at the front end of the transverse movement trolley 11 is provided with a second pressure spring 16 and a pressure sensor 17, wherein the total length of the first pressure spring 14 is equal to the sum of the lengths of the second pressure spring 16 and the pressure sensor 17 body.

[0045] Specifically, two composite bearings are arranged on both sides of the traverse trolley 11 as wheels 12 of the traverse trolley. The tail of the traverse trolley 11 is provided with a fixed reaming ear hole connected to the head of the hydraulic cylinder 5. The axial end baffle plate 9, the axial end baffle plate bolt 7 and other connecting parts are hinged to the head of the hydraulic cylinder. The front end of the traverse trolley is provided with five equally spaced guide sleeves 21, wherein the bottom of the middle guide sleeve is provided with a pressure sensor threading hole, and the guide sleeve is used to place the pressure sensor 17, the spring adjustment gasket 13 and the second pressure spring 16. The pressure sensor 17 is used to detect the pressure on the scraper when the self-sensing roller scraper cleaning device is working, so as to calculate the deformation of the pressure spring; the middle sleeve biased towards the two sides is the guide sleeve, which plays a guiding role in the scraper clamping device; the left and right outermost sleeves are provided with spring adjustment gaskets and the first pressure spring 14, and the theoretical length of the first pressure spring 14 is equal to the total length of the second pressure spring 16 plus the pressure sensor 17. A chain fixing point and a chain 15 with quick-press buckles at both ends are also provided in the middle position of the sleeves on both sides. The length of the chain with quick-press buckles at both ends should be within a certain range: its minimum length should be greater than the straight-line distance between the chain fixing point of the transverse trolley and the chain fixing point of the scraper clamping device after the first pressure spring 14 or the second pressure spring 16 is compressed under normal working conditions; its maximum length should be less than the straight-line distance between the chain fixing point of the transverse trolley and the chain fixing point of the scraper clamping device when the guide column of the scraper clamping device contacts the two top surfaces of the guide sleeve of the transverse trolley.

[0046] The scraper 20 is shaped and fixed in length according to the characteristics of the roller, and then connected to the scraper clamping device 18 through the hinge bolt 19. The hinge bolt 19 can make the scraper 20 and the scraper clamping device 18 tightly connected after assembly, reduce shaking and thus reduce the adverse effects on the first pressure spring 14 and the second pressure spring 16. After the scraper 20 and the scraper clamping device 18 are assembled, the guide column 22 of the scraper clamping device 18 is correspondingly assembled in the guide sleeve 21 of the transverse trolley 11. At this time, the first pressure spring 14 and the second pressure spring 16 bear the pressure from the scraper 20 and the component force of the scraper clamping device 18 along the gravity direction, and transmit this combined force to the pressure sensor 17. Finally, the data of the pressure sensor 17 enters the electrical control system. After the electrical control system converts the pressure change value into the extension and contraction amount of the hydraulic cylinder 5, it synchronously controls the hydraulic cylinder 5 to adjust, and timely eliminates the changes of the pressure sensor 17, thereby realizing the adaptive adjustment process of the scraper.

[0047] Specifically, the pressure exerted on the scraper can be displayed by a pressure sensor, and the change in the reading of the pressure sensor can be equivalently converted into the deformation of the pressure spring. The displacement sensor built into the hydraulic cylinder can detect the change in the stroke of the hydraulic cylinder. The electrical control system can ensure that the force exerted by the scraper on the roller is relatively stable by adjusting the hydraulic cylinder expansion and contraction amount to be equal to the deformation of the pressure spring through joint control. The setting of the pressure spring can also reduce the hard contact between the scraper and the roller.

[0048] A displacement sensor is provided in the hydraulic cylinder 5 for detecting and feeding back the extension and retraction stroke of the hydraulic cylinder, and the extension and retraction amount of the hydraulic cylinder 5 is controlled by the displacement sensor in cooperation with the electrical control system, thereby realizing the adaptive adjustment process of the scraper; specifically, when the pressure of the pressure sensor 17 is less than the set pressure value, it means that the contact pressure between the scraper 20 and the roller is too small, and the extension and retraction amount of the hydraulic cylinder 5 should be increased; when the pressure of the pressure sensor 17 is greater than the set pressure value, it means that the contact pressure between the scraper 20 and the roller is too large, and the extension and retraction amount of the hydraulic cylinder 5 should be reduced.

[0049] After the scraper clamping device 18 and the transverse trolley 11 are assembled, they need to be connected with a chain 15. The chain with quick-press buckles at both ends is respectively buckled to the chain fixing hanging points on the transverse trolley 11 and the chain fixing hanging points on the scraper clamping device 18 to prevent the scraper clamping device 18 from slipping during the lifting process.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A self-inductive roller scraping and cleaning device, characterized in that: The invention comprises scraping devices arranged in pairs on both sides of the roller, each of which comprises a scraper arranged to slide toward the roller and a driving device for driving the scraper to slide, so as to control the force of the scraper on the roller.

2. The self-inductive roller scraping and cleaning device according to claim 1 is characterized in that: The driving device drives the scraper at the far end along the rotating direction of the roller to contact with the roller, and drives the scraper at the near end along the rotating direction of the roller to separate from the roller.

3. The self-inductive roller scraping and cleaning device according to claim 1 is characterized in that: The scraper device also includes a traverse trolley and a scraper clamping device arranged to slide toward the roller, one end of the traverse trolley is connected to the driving device, and the other end is connected to the scraper clamping device, the scraper is fixedly mounted on the scraper clamping device, and at least three guide sleeves are provided on the traverse trolley, and a guide column matching the guide sleeve is provided on the scraper clamping device, and the guide column is inserted into the guide sleeve, so that the traverse trolley is directional and slidably connected to the scraper clamping device; A first pressure spring is provided in the guide sleeves at the left and right edges of the transverse moving trolley, and a second pressure spring and a pressure sensor are provided in the middle guide sleeve of the transverse moving trolley. The total length of the first pressure spring is equal to the sum of the lengths of the second pressure spring and the pressure sensor body, so as to provide pressure toward the roller to the scraper clamping device and detect the pressure between the scraper and the roller. The driving device is controlled in linkage with the pressure sensor to control the force of the scraper on the roller, thereby keeping the force relatively stable.

4. The self-inductive roller scraping and cleaning device according to claim 3 is characterized in that: The scraping device also includes a fixed frame, which is fixedly installed on the external rolling mill arch, and is provided with wheel tracks arranged along the radial direction of the roller. The transverse trolley is provided with wheels matching the wheel tracks, so that the transverse trolley can be arranged to slide along the radial direction of the roller, and the end of the driving device away from the transverse trolley is hinged on the fixed frame.

5. The self-inductive roller scraping and cleaning device according to claim 4 is characterized in that: After the wheel is placed on the frame wheel track, a gap is left between the upper end of the wheel and the wheel track to prevent the wheel from being stuck during operation.

6. The self-inductive roller scraping and cleaning device according to claim 3 is characterized in that: A chain is also provided between the transverse moving trolley and the scraper clamping device to prevent the scraper clamping device from slipping during the lifting process.

7. The self-inductive roller scraping and cleaning device according to claim 3 is characterized in that: The scraping device further comprises an electrical control system, and the electrical control system is respectively connected to the pressure sensor and the driving device so that the driving device and the pressure sensor are controlled in linkage.

8. The self-inductive roller scraping and cleaning device according to claim 7 is characterized in that: The driving device is a hydraulic cylinder, and a displacement sensor is provided in the hydraulic cylinder so that the electrical control system can control the extension and contraction amount of the hydraulic cylinder.

9. The self-inductive roller scraping and cleaning device according to any one of claims 1 to 8, characterized in that: The shape of the scraper matches the hole shape of the roller so that the scraper fits tightly with the roller. The material of the scraper is a wear-resistant material with a hardness lower than that of the roller.

10. The self-inductive roller scraping and cleaning device according to any one of claims 1 to 8, characterized in that: A scrap iron collecting frame is also arranged below the roller, and water leakage holes are opened at the bottom and side walls of the scrap iron collecting frame to prevent water accumulation.

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