On-line roll changing device and method for a cleaning section

Abstract

This invention relates to an online roll changing device for a cleaning section, comprising a traveling track mounted on a foundation on the operating side of the cleaning section and a roll changing trolley traveling on the traveling track. The guiding direction of the traveling track is perpendicular to the axial direction of the working rolls in the cleaning section. The roll changing trolley includes a trolley body, a roll changing mechanism, and a traveling mechanism. The roll changing mechanism includes an upper roll changing unit and a lower roll changing unit mounted on the trolley body, which are staggered in the guiding direction of the traveling track. A roll changing method is also provided. The roll changing device and method provided by this invention allow for roll changing without disconnecting the strip steel, enabling roll changing while the strip steel is running at low speed. The crane only removes the old rolls and brings in the new rolls, reducing crane occupancy. By arranging the upper and lower roll changing units on the roll changing trolley, the roll changing operations of the upper and lower working rolls are independent, improving the flexibility and reliability of the roll changing operation, as well as increasing roll changing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical production technology, specifically relating to an online roller changing device and method for a cleaning section. Background Technology

[0002] The cleaning section, formed by multiple cleaning devices arranged in a continuous manner, is where the strip steel processing unit removes rolling oil and impurities from the surface of the strip steel. The squeeze rollers and brush rollers in the cleaning section are easily worn parts and need to be replaced regularly, thus requiring a suitable roller changing device. The counterweight-type roller changing device commonly used in the past required the unit to be stopped and the steel strip cut. Then, a crane would lift the roller changing device and clamp the roller neck, moving the roller while adjusting the counterweight position to move the roller in and out of the cleaning device. Roller changing work was heavy and time-consuming, the roller stability was poor during the changing process, and the entire roller changing process required the assistance of a workshop crane, resulting in low roller changing efficiency. Summary of the Invention

[0003] This invention relates to an online roller changing device and method for a cleaning section, which can at least solve some of the defects of the prior art.

[0004] This invention relates to an online roller changing device for a cleaning section, comprising a traveling track and a roller changing trolley.

[0005] The traveling track is installed on the operating side of the cleaning section, and the guiding direction of the traveling track is perpendicular to the axial direction of the working roller of the cleaning section.

[0006] The roller changing car includes a car body, a roller changing mechanism, and a traveling mechanism. The traveling mechanism is located at the bottom of the car body and is movably mounted on the traveling track. The roller changing mechanism includes an upper roller changing unit and a lower roller changing unit mounted on the car body. The upper roller changing unit and the lower roller changing unit are staggered in the guiding direction of the traveling track.

[0007] As one embodiment, the upper roller changing unit includes an upper support roller beam, which includes two upper support beams arranged opposite each other. The length direction of the upper support beams is parallel to the axial direction of the working roller in the cleaning section, and the distance between the two upper support beams is adapted to the distance between the two stepped surfaces at the bottom of the upper roller bearing seat.

[0008] As one implementation method, multiple rollers are provided on the upper support beam, and each roller is arranged sequentially along the length of the upper support beam, with the axial direction of the rollers perpendicular to the axial direction of the working rollers in the cleaning section.

[0009] As one embodiment, the upper roller changing unit also includes an upper lifting drive structure for driving the upper support roller beam to rise and fall.

[0010] As one embodiment, the lower roller changing unit includes a lower support roller beam, which includes two lower support beams arranged opposite each other. The length direction of the lower support beams is parallel to the axial direction of the working roller in the cleaning section, and the distance between the two lower support beams is adapted to the distance between the rollers on both sides of the bottom of the lower roller bearing seat.

[0011] As one embodiment, the lower roller changing unit also includes a lower lifting drive structure for driving the lower support roller beam to rise and fall.

[0012] As one implementation method, a waiting position, an upper roller changing position, and a lower roller changing position are provided along the travel track, and a vehicle body locking unit is provided at each of the waiting position, the upper roller changing position, and the lower roller changing position.

[0013] As one implementation method, the vehicle body locking unit includes positioning pin seats located at corresponding positions, each positioning pin seat being configured with a positioning pin or each positioning pin seat sharing a positioning pin.

[0014] This invention also relates to an online roller changing method for the cleaning section, implemented based on the above-described online roller changing device for the cleaning section.

[0015] The upper roller changing unit is used to complete the upper roller changing operation, and the lower roller changing unit is used to complete the lower roller changing operation.

[0016] As one implementation method, the method specifically includes:

[0017] The vehicle moves to the upper roller changing position and pulls the old upper working roller out onto the upper roller changing unit;

[0018] The vehicle moves to the lower roller changing position, pulls out the old lower working roller onto the lower roller changing unit, and at the same time lifts away the old upper working roller and lifts the new upper working roller onto the upper roller changing unit;

[0019] The vehicle moves to the upper roller changing position, installs the new upper working roller into the cleaning section equipment, and at the same time lifts away the old lower working roller and transports the new lower working roller to the lower roller changing unit;

[0020] The vehicle moves to the lower roller replacement position and installs the new lower working roller into the cleaning section equipment.

[0021] The present invention has at least the following beneficial effects:

[0022] The roll changing device and method provided by this invention do not require disconnecting the strip during the entire roll changing process, and roll changing can be performed while the strip is running at low speed. The crane only needs to remove the old roll and bring in the new roll, which can reduce the crane's occupancy rate. The roll changing car is equipped with an upper roll changing unit and a lower roll changing unit. The roll changing operations of the upper and lower working rolls are independent of each other, which can improve the flexibility and reliability of the roll changing operation, as well as improve the roll changing efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 and Figure 2 This is a schematic diagram of the roller changing device provided in an embodiment of the present invention;

[0025] Figure 3 This is a top view of the roller changing device provided in an embodiment of the present invention;

[0026] Figures 4-6 This is a schematic diagram illustrating the switchable structure of several upper roller changing modules and lower roller changing modules provided in embodiments of the present invention.

[0027] Figure 7 This is a schematic diagram of the upper working roll changing operation provided in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the lower working roll changing operation provided in an embodiment of the present invention. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1-8 This invention provides an online roller changing device for a cleaning section, including a traveling track and a roller changing trolley.

[0031] The traveling track is installed on the operating side of the cleaning section, and the guiding direction of the traveling track is perpendicular to the axial direction of the working roller of the cleaning section.

[0032] The roller changing car includes a car body 1, a roller changing mechanism, and a traveling mechanism. The traveling mechanism is located at the bottom of the car body 1 and is movably mounted on the traveling track. The roller changing mechanism includes an upper roller changing unit 2 and a lower roller changing unit 3 mounted on the car body 1. The upper roller changing unit 2 and the lower roller changing unit 3 are staggered in the guiding direction of the traveling track.

[0033] The vehicle body 1 is preferably capable of self-propelled movement on a track, for example, the walking mechanism includes a walking motor. Optionally, the walking mechanism includes a drive wheel and a driven wheel, the drive wheel includes a drive guide wheel and a drive flat wheel, and the driven wheel includes a driven guide wheel and a driven flat wheel, which can improve the stability of the vehicle body 1 during movement.

[0034] In one embodiment, the drive guide wheel includes an oil cup, a wheel box, a drive wheel axle, a guide wheel, a bearing, a cover, etc., and the components are assembled to form the drive guide wheel; the drive flat wheel includes an oil cup, a wheel box, a drive wheel axle, a flat wheel, a bearing, a cover, etc., and the components are assembled to form the drive flat wheel; the driven guide wheel includes an oil cup, a wheel box, a wheel axle, a guide wheel, a bearing, a cover, etc., and the components are assembled to form the driven guide wheel; the driven flat wheel includes an oil cup, a wheel box, a wheel axle, a flat wheel, a bearing, a cover, etc., and the components are assembled to form the driven flat wheel.

[0035] In one embodiment, a waiting position, an upper roller changing position, and a lower roller changing position are provided along the travel track, and a vehicle body locking unit is provided at each of the waiting position, the upper roller changing position, and the lower roller changing position. The upper roller changing position and the lower roller changing position are set according to the location of the working rollers in the cleaning section; generally, each group of working rollers is equipped with one upper roller changing position and one lower roller changing position. The vehicle body locking unit can lock the vehicle body 1 at the corresponding position, ensuring the reliability of the roller changing device. Preferably, the vehicle body locking unit includes a positioning pin seat located at the corresponding position, and each positioning pin seat is equipped with a positioning pin, or all positioning pin seats share a single positioning pin.

[0036] In one embodiment, such as Figures 1-3 The upper roller changing unit 2 includes an upper support roller beam, which includes two upper support beams 21 arranged opposite each other. The length direction of the upper support beams 21 is parallel to the axial direction of the working roller in the cleaning section, and the distance between the two upper support beams 21 is adapted to the distance between the two stepped surfaces at the bottom of the upper roller bearing seat.

[0037] The arrangement of the aforementioned traveling track and upper idler beam meets the following requirements: Figure 7 When the vehicle body 1 travels to the upper roller changing position, one end of the upper support roller beam approaches the corresponding upper working roller 4 and connects with the roller outlet of the upper working roller 4, so as to promptly receive the upper working roller 4 when it is pulled out of the frame. Further, as... Figure 1 and Figure 7 The upper support beam is used to support the bottom of the upper roller bearing seat. That is, the height of the upper support beam 21 is adapted to the height of the two steps at the bottom of the upper roller bearing seat, for example, slightly lower than the height of the two steps at the bottom of the upper roller bearing seat or the two are level. When the upper working roller 4 is pulled out of the frame, the upper roller bearing seat can be supported by the upper support beam and slide along the upper support beam to realize the pulling out of the upper working roller 4.

[0038] In one embodiment, such as Figure 2 and Figure 3 Multiple rollers 22 are provided on the upper support beam 21, and each roller 22 is arranged sequentially along the length of the upper support beam 21. The axial direction of the rollers 22 is perpendicular to the axial direction of the working roller of the cleaning section. The rollers 22 on both sides are used to support the two stepped surfaces at the bottom of the upper roller bearing seat. The upper roller bearing seat and the rollers 22 are in rolling contact, with low friction, which not only improves the roller changing efficiency but also reduces equipment damage.

[0039] Furthermore, such as Figure 2 The upper roller changing unit 2 also includes an upper lifting drive structure 23 for driving the upper idler beam to rise and fall. The upper idler beam can rise and fall, allowing it to more accurately receive the upper roller bearing seat, thus better completing the roller changing operation. The aforementioned upper lifting drive structure 23 includes, but is not limited to, a screw jack.

[0040] In one embodiment, such as Figures 1-3 The lower roller changing unit 3 includes a lower support roller beam, which includes two lower support beams 31 arranged opposite each other. The length direction of the lower support beams 31 is parallel to the axial direction of the working roller in the cleaning section, and the distance between the two lower support beams 31 is adapted to the distance between the rollers on both sides of the bottom of the lower roller bearing seat.

[0041] The arrangement of the aforementioned traveling track and lower idler beam meets the following requirements: Figure 8 When the vehicle body 1 moves to the lower roller changing position, one end of the lower support roller beam approaches the corresponding lower working roller 5 and connects with the roller outlet of the lower working roller 5, so as to promptly receive the lower working roller 5 when it is pulled out of the frame. Furthermore, as... Figure 1 and Figure 8 The lower support roller beam is used to support the bottom of the lower roller bearing seat. That is, the height of the lower support beam 31 is adapted to the height of the bottom roller of the lower roller bearing seat, for example, slightly lower than the height of the bottom roller of the lower roller bearing seat or the two are level. When the lower working roller 5 is pulled out of the frame, the lower roller bearing seat can be supported by the lower support roller beam and move along the lower support roller beam to realize the pull-out of the lower working roller 5.

[0042] Among them, a guide beam 32 can be set on the top of the lower support beam 31. The distance between the guide beams 32 on the two lower support beams 31 is adapted to the distance between the rollers on both sides of the bottom of the lower roller bearing seat. When the two sets of rollers at the bottom of the lower roller bearing seat move on the two lower support beams 31 respectively, the outer rims of the rollers on both sides contact the two guide beams 32 respectively, which can improve the activity stability and reliability of the lower roller bearing seat.

[0043] Furthermore, such as Figure 2The lower roller changing unit 3 also includes a lower lifting drive structure 33 for driving the lower support roller beam to rise and fall. The lower support roller beam can rise and fall, allowing it to more accurately receive the lower roller bearing seat, thus better completing the roller changing operation. The aforementioned lower lifting drive structure 33 includes, but is not limited to, a screw jack.

[0044] Generally, the initial height of the upper roller changing unit 2 and the lower roller changing unit 3 is maintained within a preset range. The upper lifting drive structure 23 is used to fine-tune the position of the upper roller beam, and the lower lifting drive structure 33 is used to fine-tune the position of the lower roller beam, which can improve the positional accuracy of the upper roller beam and the lower roller beam.

[0045] Furthermore, the upper roller changing unit 2 includes an upper lifting frame, and the upper lifting drive structure 23 is used to drive the upper lifting frame to lift.

[0046] In one embodiment, such as Figure 4 The upper roller changing unit 2 also includes a first mounting base, which is rotatably mounted on the upper lifting frame and equipped with a first rotation drive assembly for driving its rotation. The axis of rotation is parallel to the axial direction of the working roller in the cleaning section. A first upper roller changing module 20a and a first lower roller changing module 30a are provided on the first mounting base. The first upper roller changing module 20a includes two upper support beams 21, and the first lower roller changing module 30a includes two lower support beams 31. Thus, by rotating the first mounting base, the switching between the upper and lower roller changing modules can be realized. One set of changing units can meet the changing requirements of both the upper and lower rollers, effectively improving the working flexibility and reliability of the changing device. Preferably, the first mounting base is a square base, and the first upper roller changing module 20a and the first lower roller changing module 30a are distributed on two adjacent base plates of this square base.

[0047] In one embodiment, such as Figure 5 A first swing seat and a second swing seat are rotatably mounted on the upper lifting frame. The first swing seat is equipped with a second upper roller changing module 20b, and the second swing seat is equipped with a second lower roller changing module 30b. The second upper roller changing module 20b includes two upper support beams 21, and the second lower roller changing module 30b includes two lower support beams 31. Thus, by swinging the first swing seat and the second swing seat, the switching between the upper roller changing module and the lower roller changing module can be realized. One set of roller changing units can meet the roller changing operation requirements of the upper and lower rollers, and can effectively improve the working flexibility and reliability of the roller changing device.

[0048] In one embodiment, such as Figure 6The upper roller changing unit 2 also includes two second mounting seats. The second mounting seats are rotatably mounted on the upper lifting frame and equipped with a second rotation drive assembly for driving their rotation. The axis of rotation is parallel to the axial direction of the working roller in the cleaning section. A third upper roller changing module 20c and a third lower roller changing module 30c are mounted on the second mounting seats. The third upper roller changing module 20c includes an upper support beam 21, and the third lower roller changing module 30c includes a lower support beam 31. Thus, by rotating the second mounting seats, the switching between the upper and lower roller changing modules can be achieved. The cooperation of the two second mounting seats can meet the requirements of upper and lower roller changing operations, effectively improving the working flexibility and reliability of the roller changing device. Preferably, the second mounting seats are square seats, and the third upper roller changing module 20c and the third lower roller changing module 30c are distributed on two adjacent seat plates of this square seat. Based on this scheme, in an optional embodiment, the axle of the upper support roller 22 has an air passage. One end of the axle is connected to an air inlet pipe via a rotary joint, and the other end of the axle is equipped with a nozzle. When the upper roller changing module is in the working position (i.e., located at the top of the second mounting base), the nozzles of the two sets of upper support rollers 22 are opposite each other (i.e., the nozzles face the upper support roller 22 on the other side). When the lower roller changing module is in the working position, the air inlet pipe is located below the nozzle, which avoids interference with the lower roller changing operation. Thus, high-pressure air can be sprayed from the nozzle of one upper support roller 22 to clean the upper support roller 22 / lower support beam 31 on the other side, which can significantly extend the service life of the roller changing device. By rotating the upper support beam 21 to be cleaned, the cleaning effect and efficiency can be further improved. In addition, when there is an angle (greater than 0° and less than 90°) between the nozzle axis and the axle axis, especially when the upper support roller 22 to be cleaned can be rotated by the sprayed airflow, the cleaning effect and efficiency can be further improved.

[0049] The lower roller changing unit 3 can also adopt the above structure, that is, the lower roller changing unit 3 is equipped with an upper roller changing module and a lower roller changing module that can be switched. The specific structure will not be described in detail here.

[0050] This embodiment also relates to an online roller changing method for the cleaning section, which is implemented based on the above-mentioned online roller changing device for the cleaning section. The method involves using an upper roller changing unit 2 to complete the upper roller changing operation and using a lower roller changing unit 3 to complete the lower roller changing operation.

[0051] In one embodiment, the above-mentioned roller changing method specifically includes:

[0052] a1. The vehicle body 1 travels to the upper roller replacement position, pulls out the old upper working roller 4 onto the upper roller replacement unit 2, lifts away the old upper working roller 4 and lifts the new upper working roller 4 onto the upper roller replacement unit 2, and installs the new upper working roller 4 into the cleaning section equipment.

[0053] a2. The vehicle body 1 travels to the lower roller replacement position, pulls out the old lower working roller 5 onto the lower roller replacement unit 3, lifts away the old lower working roller 5 and lifts the new lower working roller 5 onto the lower roller replacement unit 3, and installs the new lower working roller 5 into the cleaning section equipment.

[0054] In another embodiment, the above-described roller changing method specifically includes:

[0055] b1. The vehicle body 1 travels to the upper roller changing position and pulls out the old upper working roller 4 onto the upper roller changing unit 2;

[0056] b2. The vehicle body 1 travels to the lower roller changing position, pulls out the old lower working roller 5 onto the lower roller changing unit 3, and at the same time lifts away the old upper working roller 4 and lifts the new upper working roller 4 onto the upper roller changing unit 2.

[0057] b3. The vehicle body 1 travels to the upper roller changing position, installs the new upper working roller 4 into the cleaning section equipment, and at the same time lifts away the old lower working roller 5 and lifts the new lower working roller 5 to the lower roller changing unit 3.

[0058] b4. The vehicle body 1 travels to the lower roller replacement position and installs the new lower working roller 5 into the cleaning section equipment.

[0059] In the second roll changing method, the upper roll changing operation and the lower roll changing operation can be carried out alternately, which can effectively improve the roll changing efficiency.

[0060] Of course, the following method can be used as an alternative to the second roller changing method mentioned above:

[0061] c1. The vehicle body 1 travels to the lower roller changing position and pulls out the old lower working roller 5 onto the lower roller changing unit 3;

[0062] c2. The vehicle body 1 travels to the upper roller changing position, pulls out the old upper working roller 4 onto the upper roller changing unit 2, and at the same time lifts away the old lower working roller 5 and lifts the new lower working roller 5 onto the lower roller changing unit 3.

[0063] c3. The vehicle body 1 travels to the lower roller replacement position, installs the new lower working roller 5 into the cleaning section equipment, and at the same time lifts away the old upper working roller 4 and lifts the new upper working roller 4 to the upper roller replacement unit 2.

[0064] c4. The vehicle body 1 travels to the upper roller replacement position and installs the new upper working roller 4 into the cleaning section equipment.

[0065] The aforementioned working rollers can be squeeze rollers, brush rollers, etc.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An online roller changing device for a cleaning section, characterized in that, Including the travel track and the roller changing car, The traveling track is installed on the operating side of the cleaning section, and the guiding direction of the traveling track is perpendicular to the axial direction of the working roller of the cleaning section. The roller changing car includes a car body, a roller changing mechanism, and a traveling mechanism. The traveling mechanism is located at the bottom of the car body and is movably mounted on the traveling track. The roller changing mechanism includes an upper roller changing unit and a lower roller changing unit mounted on the car body. The upper roller changing unit and the lower roller changing unit are staggered in the guiding direction of the traveling track. The upper roller changing unit includes an upper lifting frame and an upper lifting drive structure for driving the upper lifting frame to rise and fall; The upper roller changing unit also includes a first mounting base, which is rotatably mounted on the upper lifting frame and equipped with a first rotation drive assembly for driving its rotation. The axis of rotation is parallel to the axial direction of the working roller in the cleaning section. A first upper roller changing module and a first lower roller changing module are provided on the first mounting base. The upper roller changing module and the lower roller changing module can be switched by rotating the first mounting base. Alternatively, a first swing seat and a second swing seat are rotatably mounted on the upper lifting frame. The first swing seat is equipped with a second upper roller changing module, and the second swing seat is equipped with a second lower roller changing module. By swinging the first swing seat and the second swing seat, the switching between the upper roller changing module and the lower roller changing module can be realized.

2. The online roller changing device for the cleaning section as described in claim 1, characterized in that: The first upper roller changing module / the second upper roller changing module includes an upper support roller beam, which includes two upper support beams arranged opposite each other. The length direction of the upper support beams is parallel to the axial direction of the working roller in the cleaning section, and the distance between the two upper support beams is adapted to the distance between the two stepped surfaces at the bottom of the upper roller bearing seat.

3. The online roller changing device for the cleaning section as described in claim 2, characterized in that: Multiple rollers are provided on the upper support beam, and each roller is arranged sequentially along the length of the upper support beam, with the axial direction of the rollers perpendicular to the axial direction of the working rollers in the cleaning section.

4. The online roller changing device for the cleaning section as described in claim 1, characterized in that: The lower roller changing unit includes a lower support roller beam, which includes two lower support beams arranged opposite each other. The length direction of the lower support beams is parallel to the axial direction of the working roller in the cleaning section, and the distance between the two lower support beams is adapted to the distance between the rollers on both sides of the bottom of the lower roller bearing seat.

5. The online roller changing device for the cleaning section as described in claim 4, characterized in that: The lower roller changing unit also includes a lower lifting drive structure for driving the lower support roller beam to rise and fall.

6. The online roller changing device for the cleaning section as described in claim 1, characterized in that: The travel track is provided with a waiting position, an upper roller changing position and a lower roller changing position, and a vehicle body locking unit is provided at each of the waiting position, the upper roller changing position and the lower roller changing position.

7. The online roller changing device for the cleaning section as described in claim 6, characterized in that: The vehicle body locking unit includes positioning pin seats located at corresponding positions, each positioning pin seat being equipped with a positioning pin or each positioning pin seat sharing a positioning pin.

8. A method for online roller changing in a cleaning section, characterized in that, Implemented based on the online roller changing device for the cleaning section according to any one of claims 1 to 7, The upper roller changing unit is used to complete the upper roller changing operation, and the lower roller changing unit is used to complete the lower roller changing operation.

9. The online roller changing method for the cleaning section as described in claim 8, characterized in that, The method specifically includes: The vehicle moves to the upper roller changing position and pulls the old upper working roller out onto the upper roller changing unit; The vehicle moves to the lower roller changing position, pulls out the old lower working roller onto the lower roller changing unit, and at the same time lifts away the old upper working roller and lifts the new upper working roller onto the upper roller changing unit; The vehicle moves to the upper roller changing position, installs the new upper working roller into the cleaning section equipment, and at the same time lifts away the old lower working roller and transports the new lower working roller to the lower roller changing unit; The vehicle moves to the lower roller replacement position and installs the new lower working roller into the cleaning section equipment.

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