Roll changing device and roll changing method
By using a roller changing device and method, the working rollers of the tension leveler can be replaced without stopping the machine, which solves the problem of long downtime caused by traditional replacement methods, improves production efficiency and economic benefits, and ensures production stability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-26
- Publication Date
- 2026-03-24
AI Technical Summary
In existing technologies, the replacement of the working rolls of the tension leveling machine requires a shutdown, resulting in prolonged downtime and unstable production rhythm, which affects production efficiency and economic benefits.
A roller changing device and method are provided, which uses a track and a roller changing trolley to change the working roller of a tension leveler without stopping the machine by means of clamping and positioning parts. The device includes a first roller box and a second roller box traction device to realize the horizontal and vertical limiting of the working roller, and to change the roller by moving it along the track by a drive part.
This technology enables the replacement of the working rolls of the tension leveler without shutting down the machine, reducing downtime, improving production efficiency, increasing product output, reducing economic losses, and ensuring production stability and safety.
Smart Images
Figure CN121715420A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of roll changing of a tension leveler, and particularly relates to a roll changing device and a roll changing method. BACKGROUND
[0002] In a steel production process, a continuous pickling line occupies a core position. An online tension leveler configured by the continuous pickling line shoulders key missions such as scale breaking on a pickling plate surface, accelerating a pickling process, and optimizing a strip shape. A working roll of the tension leveler is a core component directly affecting product quality, and its running state is closely related to the pickling plate quality. Once the working roll has serious wear or obvious fatigue lines appear on a roll surface, the working roll must be replaced in time to ensure product quality. SUMMARY
[0003] To solve the technical problem that the working roll of the tension leveler needs to be replaced, the application provides a roll changing device and a roll changing method.
[0004] In a first aspect of the application, a roll changing device is provided, which is characterized in that the roll changing device is applied to a tension leveler and includes a track and a roll changing trolley in sliding cooperation with the track, and the track and a roll box axial direction of the tension leveler are parallel to each other. The roll changing trolley includes a trolley body and one or more first roll box traction devices and one or more second roll box traction devices provided on the trolley body; the one or more first roll box traction devices correspond one by one to upper roll box positions of the tension leveler; and the one or more roll box traction devices correspond one by one to lower roll box positions of the tension leveler. The first roll box traction device and the second roll box traction device each include a connecting seat provided on the trolley body, a clamping piece provided on the connecting seat, and a positioning piece, the clamping piece is used to cooperate with a working roll of the tension leveler to limit the working roll in a vertical direction, the clamping piece is further provided with a limiting hole corresponding to a shaft head of the working roll in the vertical direction, and the positioning piece can be inserted into the limiting hole and a limiting hole of the shaft head of the working roll in a vertical direction to limit the working roll in a horizontal direction.
[0005] In some embodiments, the connecting seat of the first roll box traction device is a first connecting seat, the clamping piece of the first roll box traction device is a first clamping block, and the positioning piece of the first roll box traction device is a first pin shaft. The first clamping block is open, includes oppositely arranged first and second ends, the first end of the first clamping block is open to clamp the shaft head of the working roll, and the second end of the first clamping block is connected with the first connecting seat. The second end of the first clamping block and the first connecting seat are each provided with a first through hole, and the first pin shaft can be inserted into the first through hole.
[0006] In some embodiments, the opening size of the first clamping block gradually decreases from the first end to the second end.
[0007] In some embodiments, the first roller box pulling device further comprises a lifting assembly, the lifting assembly comprising: a handle provided on the first connecting seat and rotationally connected with the first connecting seat; a sleeve provided on the first connecting seat; a first connecting rod rotationally connected with the handle and connected with the first pin shaft, the first pin shaft being slidingly connected with the sleeve.
[0008] In some embodiments, the connecting seat of the second roller box pulling device is a second connecting seat, the clamping member of the second roller box pulling device is a second clamping block, and the positioning member of the second roller box pulling device is a second pin shaft; the second clamping block is open-ended, the second clamping block comprises a first end and a second end arranged opposite to each other, the first end of the second clamping block is open-ended for clamping the shaft head of the work roll, and the second end of the second clamping block is connected with the second connecting seat; the second end of the second clamping block is provided with a second through hole, and the second pin shaft is movably inserted into the second through hole to position the work roll.
[0009] In some embodiments, the second roller box pulling device further comprises a rolling member, the rolling member being rotationally connected with the second clamping block.
[0010] In some embodiments, the rolling member and the second through hole are located on one side of the roll straightening machine.
[0011] In some embodiments, the roll changing device further comprises a driving member, the telescopic end of the driving member being connected with the trolley body to make the trolley body approach or move away from the roll straightening machine.
[0012] In some embodiments, the trolley body further comprises a wheel provided on the trolley body, the wheel being matched with the track. In some embodiments, the track is a V-shaped track.
[0013] In the second aspect of the present application, a roll changing method is provided, based on the roll changing device described above, comprising the following steps: adjusting the production line into a non-roll straightening mode; opening the roll changing roller box to make the roller box separate from the roll straightening machine; moving the roll changing device to one side of the roll straightening machine; The working roller of the upper roller box of the straightening and leveling machine is matched with the clamping part of the first roller box traction device to limit the working roller in the vertical direction; the positioning part is inserted into the limiting hole and the positioning hole of the shaft head of the working roller to limit the working roller in the horizontal direction; The working roller of the lower roller box of the straightening and leveling machine is matched with the clamping part of the second roller box traction device to limit the working roller in the vertical direction; the positioning part is inserted into the limiting hole and the positioning hole of the shaft head of the working roller to limit the working roller in the horizontal direction; The roller changing device is moved away from the straightening and leveling machine to move the upper roller box and the lower roller box of the straightening and leveling machine out of the straightening and leveling machine; The working roller to be replaced is moved out of the roller changing device for replacement, and the new working roller after replacement is fixed to the roller changing device; The roller changing device is moved towards the straightening and leveling machine to move the straightening and leveling machine to the online position; The new working roller of the roller changing device is installed on the straightening and leveling machine, and the roller changing of the straightening and leveling machine is completed.
[0014] According to one or more embodiments of the present application, a roller changing device and a roller changing method are provided, which are applied to a straightening and leveling machine. The roller changing device comprises a track and a roller changing trolley in sliding cooperation with the track. The track and the roller box axial direction of the straightening and leveling machine are parallel to each other. The roller changing trolley comprises a trolley body and one or more first roller box traction devices and one or more second roller box traction devices arranged on the trolley body. One or more first roller box traction devices correspond one-to-one to the positions of the upper roller boxes of the straightening and leveling machine. One or more roller box traction devices correspond one-to-one to the positions of the lower roller boxes of the straightening and leveling machine. The first roller box traction device and the second roller box traction device each comprise a connecting seat arranged on the trolley body, and a clamping part and a positioning part arranged on the connecting seat. The clamping part is used to cooperate with the working roller of the straightening and leveling machine to limit the working roller in the vertical direction. The clamping part is further provided with a limiting hole corresponding to the shaft head of the working roller in the vertical direction. The positioning part can be inserted into the limiting hole and the positioning hole of the shaft head of the working roller in the vertical direction to limit the working roller in the horizontal direction.
[0015] Thus, the application provides a roll changing device. Before changing the roll, the production line is changed to a non-pulling straightening mode. Then the roll changing trolley is moved to the side close to the straightening machine. The working roll of the upper roll box of the straightening machine is clamped and fixed by the first roll box traction device. The working roll of the lower roll box is clamped and fixed by the second roll box traction device. Then the roll changing trolley is moved to the side away from the straightening machine, and the replacement is carried out. Then the replaced new working roll is reinstalled on the straightening machine. Thus, the working roll of the straightening machine can be replaced under the condition that the continuous pickling line does not stop. The equipment downtime is reduced. The production efficiency of the continuous pickling line is improved. The stability of the production rhythm is ensured. The product yield is increased. The economic loss caused by the replacement of the working roll is eliminated. The economic benefit of the enterprise is improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 The structure schematic diagram of the roll changing device in one or more embodiments of the application is shown.
[0017] Figure 2 The operation structure schematic diagram of the roll changing device of Figure 1 is shown.
[0018] Figure 3 The side view of the roll changing device of Figure 1 is shown.
[0019] Figure 4 The first roll box traction device structure schematic diagram of the roll changing device of Figure 1 is shown.
[0020] Figure 5 The second roll box traction device structure schematic diagram of the roll changing device of Figure 1 is shown.
[0021] Marked as: 10-roll changing device, 100-roll changing trolley, 110-trolley body, 111-wheel, 112-workbench, 113-placing position, 120-first roll box traction device, 121-first connecting seat, 122-first clamping block, 123-first pin shaft, 124-lifting assembly, 1241-shaking handle, 1242-sleeve, 1243-first connecting rod, 125-first through hole, 130-second roll box traction device, 131-second connecting seat, 132-second clamping block, 133-second pin shaft, 134-rolling element, 135-positioning cylinder, 136-second through hole, 200-rail, 300-driving element, 310-mounting seat. DETAILED DESCRIPTION
[0022] In order for those skilled in the art to which the present application pertains to more clearly understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0023] Currently, the traditional work roll replacement mode of the withdrawal straightener in industrial practice needs to be carried out in a stopped state. The specific operation process is as follows: after stopping, the worn work roll is disassembled from the withdrawal straightener by means of specific tools and equipment according to the established steps, and then a new work roll is installed. In this process, simple lifting equipment and auxiliary tools are usually used to complete the work roll carrying and installation operation. The prior art has the following problems: Long stop time: the existing stop replacement mode of the work roll of the withdrawal straightener needs about 2 hours for each replacement. For a continuous pickling line with a tense production rhythm, this is undoubtedly a huge time loss.
[0024] Affecting production rhythm: the monthly capacity of the current continuous pickling line reaches 120,000 tons. According to the replacement period of the work roll of the withdrawal straightener of 27,000 tons, 5 roll replacement operations need to be performed monthly. However, the replacement period of the work roll of the withdrawal straightener is obviously out of phase with the regular maintenance period of the production line- the production line is only arranged for 2 planned maintenance per month, resulting in the remaining 3 roll replacement operations having to be implemented through unplanned stoppage. This non-planned stoppage accumulatively causes 6 hours of production interruption per month, not only increasing the difficulty of organizing equipment maintenance, but also significantly interfering with the balanced production of the production line, making the stability of the production rhythm face a severe challenge.
[0025] Economic benefits are damaged: the reference machine capacity of the continuous pickling line is 168 tons / hour. According to this calculation, the 6 hours of downtime caused by work roll replacement per month directly results in a loss of about 1008 tons of pickling plate production. This production interruption not only affects the monthly production plan, but also causes considerable economic benefit loss. According to the system calculation, the direct economic loss caused by this downtime problem is as high as 1.2 million yuan per year, highlighting the urgency of optimizing the equipment maintenance strategy and the production organization mode.
[0026] Therefore, in order to solve the above problems, the present application provides a roll replacement device and a roll replacement method.
[0027] Please refer to Figure 1 , Figure 2 and Figure 3As shown, the first aspect of the present application provides a roll changing device 10 applied to a tension leveler, the roll changing device 10 comprises a track 200 and a roll changing trolley 100 in sliding cooperation with the track 200, the track 200 is parallel to the axial direction of the roll box of the tension leveler; the roll changing trolley 100 comprises a trolley body 110 and one or more than one first roll box traction device 120 and one or more than one second roll box traction device 130 arranged on the trolley body 110; one or more than one first roll box traction device 120 corresponds to the upper roll box position of the tension leveler one by one; one or more than one roll box traction device corresponds to the lower roll box position of the tension leveler one by one; the first roll box traction device 120 and the second roll box traction device 130 both comprise a connecting seat arranged on the trolley body 110 and a clamping piece and a positioning piece arranged on the connecting seat, the clamping piece is used for cooperating with the work roll of the tension leveler to limit the work roll in the vertical direction; the clamping piece is further provided with a limiting hole corresponding to the shaft head of the work roll of the tension leveler in the vertical direction, and the positioning piece can be inserted into the limiting hole and the positioning hole of the shaft head of the work roll in the vertical direction to limit the work roll in the horizontal direction.
[0028] The roll changing device 10 can move along the track 200 through the roll changing trolley 100, so as to move the roll changing trolley 100 close to or away from the tension leveler, and the track 200 is along the axial direction of the roll box of the tension leveler, that is, after moving the roll changing trolley 100 close to the tension leveler, the work roll of the tension leveler can be replaced along the axial direction of the roll box, and the work roll is integrally extracted / loaded along the axial direction of the roll box, which saves the roll changing time and improves the work efficiency.
[0029] In order to better replace the work roll of the tension leveler, the tension leveler is provided with an upper roll box and a lower roll box, and correspondingly, the first roll box traction device 120 and the second roll box traction device 130 are arranged on the roll changing device 10, the first roll box traction device 120 is used for fixing the work roll of the upper roll box of the tension leveler, and the second roll box traction device 130 is used for fixing the work roll of the lower roll box of the tension leveler. Through the cooperation of the first roll box traction device 120 and the second roll box traction device 130, the work roll of the upper roll box and the work roll of the lower roll box of the tension leveler can be clamped and fixed, so as to facilitate the extraction of the work roll of the tension leveler and facilitate the replacement.
[0030] In order to improve the roll changing efficiency and reduce the equipment downtime, the production line can be changed to a non-tension leveling mode before roll changing, that is, the work roll of the tension leveler can be efficiently and safely replaced without stopping, so as to ensure the continuity of production, improve the production efficiency and reduce the economic loss.
[0031] Thus, the application provides a roll changing device 10. Before changing the roll, the production line is changed into a non-pulling straightening mode. Then the roll changing trolley 100 is moved to the side close to the straightening machine. The working roll of the upper roll box is clamped and fixed by the first roll box traction device 120. The working roll of the lower roll box is clamped and fixed by the second roll box traction device 130. Then the roll changing trolley 100 is moved to the side away from the straightening machine, and the replacement is performed. Then the new working roll after replacement is reinstalled on the straightening machine. Thus, the working roll of the straightening machine can be replaced under the condition that the continuous pickling line does not stop. The equipment downtime is reduced. The production efficiency of the continuous pickling line is improved. The stability of the production rhythm is ensured. The product yield is increased. The economic loss caused by the replacement of the working roll is eliminated. The economic benefit of the enterprise is improved.
[0032] In some embodiments, the trolley body 110 is also provided with a workbench 112, which facilitates the operation of the roll changing device 10 by the staff on the workbench 112.
[0033] As shown in Figure 2 and Figure 4 , in some embodiments, the connecting seat of the first roll box traction device 120 is a first connecting seat 121. The clamping part of the first roll box traction device 120 is a first clamping block 122. The positioning part of the first roll box traction device 120 is a first pin shaft 123. The first clamping block 122 is open. The first clamping block 122 includes a first end and a second end arranged opposite to each other. The first end of the first clamping block 122 is open to clamp the shaft head of the working roll. The second end of the first clamping block 122 is connected with the first connecting seat 121. The second end of the first clamping block 122 and the first connecting seat 121 are both provided with a first through hole 125. The first pin shaft 123 can be inserted into the first through hole 125. The shaft head of the working roll of the upper roll box is inserted into the first clamping block 122. The first pin shaft 123 is inserted into the first through hole 125. Thus, the clamping and fixing of the working roll in the upper roll box can be achieved.
[0034] Since the upper roll box is usually provided with other equipment above the working roll, the space above the first through hole 125 is small, which is not convenient for inserting the first pin shaft 123. Therefore, the first pin shaft 123 needs to be inserted from the lower part to the upper part of the first through hole 125, i.e. from the bottom to the top.
[0035] As shown in Figure 4As shown, in some embodiments, the opening size of the first clamping block 122 gradually decreases from the first end to the second end. That is, the opening of the first clamping block 122 is not a structural feature of uniform width; the opening size of the first clamping block 122 can decrease linearly or non-linearly from the first end to the second end. The first clamping block 122 gradually narrows from the first end to the second end, forming a wedge-shaped or conical opening. In the case of clamping the shaft head of the work roller, the shaft head of the work roller falls in from the first end with a larger opening, and then moves towards the second end, where the opening of the first clamping block 122 becomes smaller and smaller, eventually clamping the shaft head of the work roller.
[0036] To ensure the stability of the first pin 123 after it is inserted into the first through hole 125, in some embodiments, the first roller box traction device 120 further includes a lifting assembly 124. The lifting assembly 124 includes a crank handle 1241, a sleeve 1242, and a first connecting rod 1243. The crank handle 1241 is disposed on and rotatably connected to the first connecting seat 121; the sleeve 1242 is disposed on the first connecting seat 121; the first connecting rod 1243 is rotatably connected to the crank handle 1241, and is connected to the first pin 123. The first pin 123 is slidably connected to the sleeve 1242. After the shaft head of the work roller falls into the first clamping block 122, the first connecting rod 1243 can be rotated by the crank handle 1241. The first connecting rod 1243 drives the first pin 123 to slide along the sleeve 1242 and eventually pass through the first through hole 125 of the first clamping block 122, thereby limiting the shaft head of the work roller.
[0037] like Figure 5 As shown, in some embodiments, the connecting seat of the second roller box traction device 130 is a second connecting seat 131, the clamping member of the second roller box traction device 130 is a second clamping block 132, and the positioning member of the second roller box traction device 130 is a second pin 133. The second clamping block 132 is open and includes a first end and a second end that are disposed opposite to each other. The first end of the second clamping block 132 is open to clamp the shaft head of the work roller, and the second end of the second clamping block 132 is connected to the second connecting seat 131. The second end of the second clamping block 132 is provided with a second through hole 136, and the second pin 133 is movably inserted into the second through hole 136 to limit the work roller. When the shaft head of the work roller in the lower roller box is dropped into the second clamping block 132 and the second pin 133 is inserted into the second through hole 136, the work roller in the lower roller box can be clamped and fixed.
[0038] Since there is room for movement above the working roller of the lower roller box, the second pin 133 needs to be inserted from the top to the bottom of the second through hole 136, and positioned by gravity.
[0039] In some embodiments, the roll changing trolley 100 is further provided with a placing position 113 for placing the second pin shaft 133, that is, the second pin shaft 133 can be inserted into the placing position 113 when not needed, and directly taken out from the placing position 113 and inserted into the second through hole 136 when needed.
[0040] In some embodiments, the second connecting seat 131 is provided with three, and the position of each second connecting seat 131 corresponds to the position of the lower roll box of the tension leveler. Each second connecting seat 131 is provided with a second clamping block 132. The second clamping block 132 and the second connecting seat 131 can be detachably connected, that is, the second clamping block 132 and the second connecting seat 131 can be detachably connected through bolts and screws, facilitating later maintenance.
[0041] In some embodiments, the second clamping block 132 includes a horizontal plate and two vertical plates connected with the horizontal plate, and the horizontal plate is detachably connected with the second connecting seat 131. The two vertical plates extend in the axial direction of the work roll. The distance between the two vertical plates is slightly greater than the diameter of the roll of the lower roll box of the tension leveler, and the two vertical plates and the horizontal plate enclose a containing cavity, facilitating the roll head of the lower roll box to fall into the containing cavity.
[0042] In some embodiments, the horizontal plate of the second clamping block 132 is further provided with a positioning cylinder 135, and the positioning cylinder 135 is arranged in a vertical direction and is provided with a second through hole 136 in the middle. The second pin shaft 133 can pass along the shaft head of the work roll and the second through hole 136 of the positioning cylinder 135, thereby limiting the work roll.
[0043] In some embodiments, the vertical plate of the second clamping block 132 is further provided with an inclined reinforcing plate connected with the vertical plate and the horizontal plate. When supporting the work roll, the reinforcing plate can strengthen the bearing and improve the supporting force.
[0044] In some embodiments, the second roll box pulling device 130 further includes a rolling member 134 rotatably connected with the second clamping block 132. The rolling member 134 can be a roller, and the two ends of the roller are rotatably connected with the two vertical plates of the second clamping block 132 through bearings, respectively. That is, in the process of pulling out the work roll, the rolling member 134 plays a guiding role.
[0045] In some embodiments, the rolling member 134 is close to one side of the tension leveler, that is, in the process of replacing the work roll, the work roll contacts first, which facilitates the work roll to be pulled out.
[0046] In some embodiments, the roll changing device 10 further comprises a driving member 300, the telescopic end of the driving member 300 is connected with the trolley body 110 to move the trolley body 110 close to or away from the tension leveler. The driving member 300 can be a hydraulic cylinder or a pneumatic cylinder, for example, the oil cylinder can be installed on the ground through a mounting seat 310, the telescopic end of the driving member 300 is arranged along the axial direction parallel to the working roll, and driving the driving member 300 can drive the platform body to move along the axial direction parallel to the working roll.
[0047] In some embodiments, the trolley body 110 further comprises wheels 111 arranged on the trolley body 110, the wheels 111 are matched with the track 200; driving the driving member 300 can drive the platform body to move along the axial direction parallel to the working roll, that is, the wheels 111 move along the track 200, which ensures that the trolley body 110 does not deviate from the track 200 and ensures the smooth roll changing.
[0048] In some embodiments, the track 200 is a V-shaped track 200, the conical surface of the V-shaped track 200 forms two-point contact with the tread of the wheel 111, which automatically centers and enables the trolley body 110 to move horizontally and stably in the full stroke.
[0049] In the second aspect of the present application, a roll changing method is provided, which is based on the roll changing device 10 described above, and characterized in that the method comprises the following steps: S100: adjusting the production line into a non-tension leveling mode; It can be understood that, before adjusting the production line into a non-tension leveling mode, when the continuous pickling line is normally operated, the opening degree of the roll gap of the upper and lower working rolls in the fully open state of the tension leveler is first measured, and the accurate value is recorded. At the same time, the running state of the strip steel is closely observed to determine whether there is a serious shaking phenomenon and to check the risk of scratching the roll surface of the working roll.
[0050] S200: opening the roll box to separate the roll box from the tension leveler; It can be understood that, before roll changing, the working roll is separated from the tension leveler to facilitate the later roll changing. After the roll box is fully opened, the strip steel is completely separated from the tension leveler, which ensures that the strip steel does not contact the tension leveler during production and ensures that the working roll is in the roll changing position.
[0051] S300: moving the roll changing device 10 to one side of the tension leveler; Specifically, driving the driving member 300 can drive the platform body to move along the axial direction parallel to the working roll.
[0052] S400: matching the working roll of the upper roll box of the tension leveler with the clamping member of the first roll box traction device 120 to limit the working roll in the vertical direction; and inserting the positioning member into the limiting hole and the positioning hole of the shaft head of the working roll to limit the working roll in the horizontal direction; Specifically, after the shaft head of the work roll falls into the first clamping block 122, the first connecting rod 1243 can be rotated through the rocking handle 1241, the first connecting rod 1243 drives the first pin shaft 123 to slide along the sleeve 1242 and finally penetrates the first through hole 125 of the first clamping block 122, so as to limit the shaft head of the work roll.
[0053] S500: The work roll of the lower roll box of the tension leveler is matched with the clamping part of the second roll box traction device 130 to limit the work roll in the vertical direction; the positioning part is inserted into the limiting hole and the positioning hole of the shaft head of the work roll to limit the work roll in the horizontal direction; Specifically, the shaft head of the work roll of the lower roll box falls into the second clamping block 132, and the second pin shaft 133 is inserted into the second through hole 136, so that the work roll in the lower roll box can be clamped and fixed.
[0054] S600: Move the roll changing device 10 away from the tension leveler to move the upper roll box and the lower roll box of the tension leveler away from the tension leveler; Specifically, the driving of the driving part 300 can drive the platform body to move in the axial direction parallel to the work roll.
[0055] S700: Replace the work roll to be replaced which is moved out of the roll changing device 10, and fix the new work roll after replacement on the roll changing device 10; Specifically, the work roll to be replaced which is moved out of the roll changing device 10 is taken out, and a new work roll is placed on the roll changing device 10. After the shaft head of the upper work roll falls into the first clamping block 122, the first connecting rod 1243 is rotated through the rocking handle 1241, the first connecting rod 1243 drives the first pin shaft 123 to slide along the sleeve 1242 and finally penetrates the first through hole 125 of the first clamping block 122, so as to limit the shaft head of the work roll. The shaft head of the work roll of the lower roll box falls into the second clamping block 132, and the second pin shaft 133 is inserted into the second through hole 136, so that the work roll in the lower roll box can be clamped and fixed. That is, the new work roll is fixed on the roll changing device 10.
[0056] S800: Move the roll changing device 10 towards the tension leveler to move the tension leveler to the online position; Specifically, the driving of the driving part 300 can drive the platform body to move in the axial direction parallel to the work roll to the online position.
[0057] S900: Install the new work roll of the roll changing device 10 to the tension leveler to complete the roll changing of the tension leveler.
[0058] Through the above embodiments, the present application has the following beneficial effects or advantages: 1) Reduce downtime: the prior art needs to stop for about 2 hours each time the work roll of the tension leveler is replaced, and the application realizes non-stop replacement, which can reduce 6 hours of downtime per month, greatly improving the effective operation time of the equipment.
[0059] 2) Improve production efficiency: non-stop replacement of the work roll avoids interference with the production rhythm, enabling continuous and stable production of the continuous pickling line, and more than 800 tons of pickling plates can be produced per month, significantly improving production efficiency.
[0060] 3) Increase economic benefits: by reducing downtime and improving production efficiency, more than 1 million yuan in economic benefits can be generated annually, bringing tangible benefits to the enterprise.
[0061] 4) Reduce safety risks: through comprehensive safety risk identification and the development of strict safety operation specifications, the application eliminates potential safety hazards during the replacement of the work roll during downtime, improving the safety of the operation.
[0062] 5) Strong adaptability: the application can reasonably arrange the timing of work roll replacement in combination with the actual production order of the production line, and has strong adaptability to the production of different types and specifications of strip steel.
[0063] In the application, unless otherwise explicitly specified and limited, "on" or "under" the first feature of the second feature can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, "on", "above" and "above" of the first feature of the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0064] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.
[0065] In the present application, unless specifically defined otherwise and limited, the terms "connected", "fixed", and the like should be construed as being broad, for example, "fixed" can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements, or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0066] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined.
[0067] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A roller changing device, characterized in that, Applied to a tension leveling machine, the roller changing device includes a track and a roller changing trolley that slides with the track, the track being parallel to the axial direction of the roller box of the tension leveling machine; The roller changing trolley includes: a trolley body and one or more first roller box traction devices and one or more second roller box traction devices disposed on the trolley body; the one or more first roller box traction devices correspond one-to-one with the upper roller box position of the tension leveler; the one or more roller box traction devices correspond one-to-one with the lower roller box position of the tension leveler. Both the first roller box traction device and the second roller box traction device include a connecting seat provided on the trolley body and a clamping member and a positioning member provided on the connecting seat. The clamping member is used to cooperate with the work roller of the tension leveler to limit the work roller in the vertical direction. The clamping member is also provided with a limiting hole in the vertical direction corresponding to the shaft head of the work roller of the tension leveler. The positioning member can be inserted in the limiting hole and the positioning hole of the shaft head of the work roller in the vertical direction to limit the work roller in the horizontal direction.
2. The roller changing device according to claim 1, characterized in that, The connecting seat of the first roller box traction device is a first connecting seat, the clamping component of the first roller box traction device is a first clamping block, and the positioning component of the first roller box traction device is a first pin. The first clamping block is open, and the first clamping block includes a first end and a second end disposed opposite to each other. The first end of the first clamping block is open for clamping the shaft head of the work roller, and the second end of the first clamping block is connected to the first connecting seat. Both the second end of the first clamping block and the first connecting seat are provided with a through hole, and the first pin can be inserted into the first through hole.
3. The roller changing device according to claim 2, characterized in that, The opening size of the first clamping block gradually decreases from the first end to the second end.
4. The roller changing device according to claim 3, characterized in that, The first roller box traction device further includes a lifting assembly, which includes: A crank is disposed on the first connecting seat and is rotatably connected to the first connecting seat; A sleeve is provided on the first connecting seat; The first connecting rod is rotatably connected to the crank handle and to the first pin, which is slidably connected to the sleeve.
5. The roller changing device according to any one of claims 1-4, characterized in that, The connecting seat of the second roller box traction device is a second connecting seat, the clamping member of the second roller box traction device is a second clamping block, and the positioning member of the second roller box traction device is a second pin. The second clamping block is open and includes a first end and a second end that are disposed opposite to each other. The first end of the second clamping block is open to clamp the shaft head of the work roller, and the second end of the second clamping block is connected to the second connecting seat. The second end of the second clamping block is provided with a second through hole, and the second pin is movably inserted into the second through hole to limit the work roller.
6. The roller changing device according to claim 5, characterized in that, The second roller box traction device further includes a rolling element, which is rotatably connected to the second clamping block.
7. The roller changing device according to claim 6, characterized in that, The rolling element and the second through hole, the rolling element being located on one side of the tension leveling machine.
8. The roller changing device according to claim 7, characterized in that, The roller changing device also includes a drive unit, the telescopic end of which is connected to the trolley body to move the trolley body closer to or further away from the straightening machine.
9. The roller changing device according to claim 8, characterized in that, The vehicle body also includes wheels disposed on the vehicle body, and the wheels cooperate with the track; And / or, the track is a V-shaped track.
10. A method for changing rollers, based on the roller changing device according to any one of claims 1-9, characterized in that, Includes the following steps: Adjust the production line to non-tension straightening mode; Open the roller box to detach it from the tension leveler; Move the roller changing device to one side of the tension leveler; The working roller of the upper roller box of the tension leveler is engaged with the clamping member of the first roller box traction device to limit the working roller in the vertical direction; the positioning member is inserted into the limiting hole and the positioning hole of the shaft head of the working roller to limit the working roller in the horizontal direction. The working roll of the lower roller box of the tension leveler is engaged with the clamping member of the second roller box traction device to limit the working roll in the vertical direction; the positioning member is inserted into the limiting hole and the positioning hole of the shaft head of the working roll to limit the working roll in the horizontal direction. Move the roller changing device in a direction away from the tension leveler to remove the upper and lower roller boxes of the tension leveler from the tension leveler; Replace the work roll that is to be replaced by the roller changing device, and fix the new work roll to the roller changing device. Move the roller changing device in a direction close to the tension leveler to move the tension leveler to the online position; The new working roll of the roll changing device is installed on the tension leveler to complete the roll changing of the tension leveler.