Roll changing trolley and roll changing assembly

Abstract

The invention discloses a roller changing trolley and a roller changing assembly, and relates to the technical field of roller changing equipment, the roller changing trolley comprises a trolley body, a supporting wheel set, a power mechanism and a hook assembly, and the supporting wheel set is movably arranged on a supporting roller changing rail; the power mechanism is arranged on the vehicle body and is used for driving the vehicle body to move along the supporting roll changing track; the hook assembly comprises a first hooking structure and a second hooking structure which are arranged on the vehicle body, the second hooking structure is arranged above the first hooking structure, the first hooking structure is used for being connected with the supporting roller assembly, and the second hooking structure is used for being connected with the working roller assembly. The first hooking structure and the second hooking structure can be arranged at different heights according to the structure of the rolling mill, the double-layer design of the hook assembly can adapt to supporting rollers and working rollers of different sizes and types, and therefore the operation of pushing in a new roller and pulling out an old roller can be achieved through the same roller replacing vehicle; and the utilization rate of the roll changing vehicle is obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of roll changing equipment, and in particular to a roll changing vehicle and a roll changing assembly. Background Art

[0002] The working rolls and backup rolls of the rolling mill need to withstand huge alternating load pressure during the rolling process. Under the influence of alternating load pressure, cracks are easily generated on the roll surfaces of the working rolls and backup rolls. When the rolling mill is hot-rolled, the roll surface will also be affected by thermal stress, making it more likely to crack. If the working rolls and backup rolls are not replaced in time after crack defects occur on the working rolls and backup rolls, the cracks on the roll body will further expand, thereby affecting the quality of the rolled product and even causing the roll surface to detach and the roll to break.

[0003] Since the working rolls and backup rolls are set at different positions, in order to improve the efficiency of roll changing, two sets of independent roll changing devices are usually used in the prior art to change the working rolls and backup rolls respectively. However, in the actual production process, depending on the type, quality and output of the rolled products, the working rolls of large hot rolling mills sometimes need to be replaced once a day, and sometimes once every three days. The backup rolls are replaced about once a month or one and a half months.

[0004] Due to the difference in replacement frequency between working rolls and backup rolls, the roll changing equipment used to replace backup rolls is used less frequently, which makes the roll changing equipment idle for a long time, wasting a lot of equipment investment. In addition, since two sets of roll changing equipment are set up, the subsequent maintenance workload and maintenance cost are also increased. Therefore, how to improve the utilization rate of roll changing equipment has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a roll changing vehicle and a roll changing assembly.

[0006] The above-mentioned object of the present invention can be achieved by adopting the following technical solutions. The present invention provides a roll changing vehicle, which is used to be arranged on a support roll changing track, and the roll changing vehicle comprises:

[0007] Vehicle body;

[0008] A supporting wheel group, the supporting wheel group is arranged at the bottom of the vehicle body, and the supporting wheel group is movably arranged on the supporting roller changing track;

[0009] A power mechanism, the power mechanism is arranged on the vehicle body, and the power mechanism is used to drive the vehicle body to move along the supporting roller changing track;

[0010] A hook assembly, the hook assembly includes a first hanging structure and a second hanging structure arranged on the vehicle body, the second hanging structure is arranged above the first hanging structure, the first hanging structure is used to connect the support roller assembly, and the second hanging structure is used to connect the working roller assembly.

[0011] In a preferred embodiment of the present invention, the power mechanism includes a power device and a transmission structure arranged on the power device, and the transmission structure is transmissionably connected to the support roller changing track.

[0012] In a preferred embodiment of the present invention, the supporting roller changing track includes two supporting roller changing guide rails arranged in parallel, and racks are provided on the two supporting roller changing guide rails, and the two racks are arranged opposite to each other; the power device includes a motor arranged on the vehicle body, and the transmission structure includes a transmission gear arranged on the rotating shaft of the motor, and the transmission gear is transmissionably meshed with any of the racks.

[0013] In a preferred embodiment of the present invention, at least two motors are provided, each of the motors is provided with a transmission gear, and each of the transmission gears is respectively meshed with the rack in a transmission manner.

[0014] In a preferred embodiment of the present invention, the first hanging structure includes a support roll hook, and the second hanging structure includes a working roll hook.

[0015] In a preferred embodiment of the present invention, the vehicle body further comprises a vehicle platform, and the vehicle platform is arranged on the vehicle body via a supporting frame, and the vehicle platform is used to be arranged at the same height as the working roll changing track.

[0016] In a preferred embodiment of the present invention, the roll changing vehicle further comprises a cover plate connecting structure arranged on the vehicle platform, the cover plate connecting structure and the second hanging structure are arranged at two ends of the vehicle platform opposite to each other, and the cover plate connecting structure is used to connect a movable cover plate.

[0017] In a preferred embodiment of the present invention, the roll changing vehicle further comprises a step ladder disposed on the vehicle body.

[0018] In a preferred embodiment of the present invention, the roll-changing vehicle further comprises an anti-tilt mechanism disposed on the vehicle body, and the anti-tilt mechanism is movably connected to the supporting roller-changing track.

[0019] In a preferred embodiment of the present invention, the anti-tipping mechanism includes a plurality of anti-tipping wheels, the anti-tipping wheels are arranged on the vehicle body through a connecting structure, and the anti-tipping wheels are arranged on the other side of the supporting roller changing track relative to the supporting wheel group.

[0020] In a preferred embodiment of the present invention, the supporting roller changing track includes two supporting roller changing guide rails arranged in parallel, one of which is a flat rail, and the other is a V-shaped rail; the supporting wheel group includes a plurality of first supporting wheels arranged on the flat rail, and a plurality of second supporting wheels arranged on the V-shaped rail, and the second support wheels are matched and connected with the V-shaped rail.

[0021] In a preferred embodiment of the present invention, the roll-changing vehicle further comprises a cable retracting mechanism disposed on the vehicle body, and the cable retracting mechanism is used to pay out or reel in the cable connected to the power mechanism.

[0022] The present invention also provides a roll changing assembly, comprising the aforementioned roll changing car and a roll changing transition car, wherein the roll changing car is used to be arranged on a supporting roll changing track, and the roll changing transition car is used to be arranged on a working roll changing track, and the working roll changing track is located above the supporting roll changing track, and the roll changing car can also be connected to the roll changing transition car through a second hanging structure.

[0023] The technical solution of the present invention has the following significant beneficial effects:

[0024] When the roll changing car of the present invention is used, the car body is arranged on the supporting roll changing track through the supporting wheel group, and the car body is driven to move along the supporting roll changing track by the power mechanism, so that the new roll can be pushed in and the old roll can be pulled out. In addition, a hook assembly is provided on the car body, and the second hanging structure of the hook assembly is arranged above the first hanging structure, so that the first hanging structure and the second hanging structure can be arranged at different heights according to the structure of the rolling mill, and the double-layer design of the hook assembly can adapt to supporting rolls and working rolls of different sizes and types, thereby enhancing the adaptability and flexibility of the roll changing car, so that it can be better applied to a variety of rolling mills. By using the first hanging structure to connect the supporting roll assembly of the rolling mill, and using the second hanging structure to connect the working roll assembly of the rolling mill, the same roll changing car can realize the pushing in of new supporting rolls and the pulling out of old supporting rolls, and can also realize the pushing in of new working rolls and the pulling out of old working rolls, thereby significantly improving the utilization rate of the roll changing car. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the roll changing vehicle of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of an embodiment of the support roller changing track of the present invention;

[0029] Figure 3 A side structural schematic diagram of an embodiment of the roll changing vehicle of the present invention;

[0030] Figure 4 This is a schematic diagram of the main structure of an embodiment of the roll changing vehicle of the present invention;

[0031] Figure 5 This is a schematic diagram of the installation structure of an embodiment of the roll changing vehicle of the present invention;

[0032] Figure 6 The figure is a side structural schematic diagram of an embodiment of the roller-changing transition vehicle of the present invention.

[0033] Reference numerals of the above drawings:

[0034] 10. Roller changing car;

[0035] 20. Support roller changing track; 21. Flat track; 22. V-shaped track; 23. Rack; 24. Cable receiving groove;

[0036] 30. Move the cover;

[0037] 40. Roller-changing transition vehicle; 41. First connecting hook; 42. Second connecting hook;

[0038] 50. Working roll changing track;

[0039] 100, vehicle body; 110, vehicle platform; 111, cover plate connection structure; 120, step ladder;

[0040] 200, support wheel set; 210, first support wheel; 220, second support wheel;

[0041] 300, power mechanism; 310, power device; 320, transmission gear;

[0042] 400, hook assembly; 410, first hanging structure; 420, second hanging structure;

[0043] 500, anti-tipping mechanism; 510, anti-tipping wheel;

[0044] 600. Cable retracting and releasing mechanism. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Implementation Method 1

[0047] Please join us Figures 1 to 6 As shown, in an embodiment of the present invention, a roll changing vehicle 10 is provided, which is used to be arranged on a supporting roll changing track 20. The roll changing vehicle 10 includes a vehicle body 100, a supporting wheel group 200, a power mechanism 300 and a hook assembly 400. The supporting wheel group 200 is arranged at the bottom of the vehicle body 100, and the supporting wheel group 200 is movably arranged on the supporting roll changing track 20; the power mechanism 300 is arranged on the vehicle body 100, and the power mechanism 300 is used to drive the vehicle body 100 to move along the supporting roll changing track 20; the hook assembly 400 includes a first hanging structure 410 and a second hanging structure 420 arranged on the vehicle body 100, and the second hanging structure 420 is arranged above the first hanging structure 410, the first hanging structure 410 is used to connect the supporting roll assembly, and the second hanging structure 420 is used to connect the working roll assembly.

[0048] On the whole, when the roll changing vehicle 10 is used, Figure 5 In the illustrated embodiment, the vehicle body 100 is disposed on the supporting roller changing track 20 via the supporting wheel set 200, and the vehicle body 100 is driven to move along the supporting roller changing track 20 via the power mechanism 300, thereby enabling the pushing in operation of the new roller and the pulling out operation of the old roller.

[0049] In addition, a hook assembly 400 is provided on the car body 100, and the second hanging structure 420 of the hook assembly 400 is arranged above the first hanging structure 410, so that the first hanging structure 410 and the second hanging structure 420 can be set at different heights according to the rolling mill structure. The double-layer design of the hook assembly 400 can adapt to supporting rolls and working rolls of different sizes and types, thereby enhancing the adaptability and flexibility of the roll changing car 10, so that it can be better applied to a variety of rolling mills.

[0050] By utilizing the first hanging structure 410 to connect the supporting roll assembly of the rolling mill, and utilizing the second hanging structure 420 to connect the working roll assembly of the rolling mill, the same roll changing car 10 can be used to push in new supporting rolls and pull out old supporting rolls, as well as to push in new working rolls and pull out old working rolls, thereby significantly improving the utilization rate of the roll changing car 10, thereby reducing the idle time of the equipment and reducing the equipment cost.

[0051] The present invention can complete the roll changing operation by using one roll changing vehicle 10, and is also helpful to reduce the subsequent repair and maintenance workload, thereby reducing the maintenance cost.

[0052] In an embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 In the illustrated embodiment, the power mechanism 300 includes a power device 310 and a transmission structure disposed on the power device 310 , and the transmission structure is transmissionably connected to the support roller changing track 20 .

[0053] By connecting the transmission structure to the support roller changing track 20 in a transmission manner, the power device 310 can generate driving force on the support roller changing track 20 through the transmission structure, thereby driving the vehicle body 100 to move on the support roller changing track 20, thereby improving the movement efficiency of the vehicle body 100.

[0054] In an embodiment of the present invention, Figure 2 and Figure 4 In the illustrated embodiment, the supporting roller changing track 20 includes two supporting roller changing guide rails arranged in parallel, and racks 23 are provided on the two supporting roller changing guide rails, and the two racks 23 are arranged opposite to each other; the power device 310 includes a motor arranged on the vehicle body 100, and the transmission structure includes a transmission gear 320 arranged on the rotating shaft of the motor, and the transmission gear 320 is transmissionably meshed with any rack 23.

[0055] Specifically, the vehicle body 100 is set on two supporting roller changing guide rails through the supporting wheel group 200, and the transmission gear 320 is placed between the two supporting roller changing guide rails and is transmissionably meshed with one of the supporting roller changing guide rails, so that when the motor drives the transmission gear 320 to rotate, the vehicle body 100 can move along the supporting roller changing guide rail.

[0056] By meshing the transmission gear 320 with the rack 23, the gear transmission mode has better transmission accuracy, which helps to better control the movement position of the roll-changing vehicle 10. The motor directly meshes the transmission gear 320 with the rack 23 to achieve efficient power transmission, ensuring that the vehicle body 100 can move quickly and smoothly along the support roller roller-changing track 20, thereby improving the efficiency of the roller-changing operation.

[0057] In addition, the meshing design of the transmission gear 320 and the rack 23 also ensures the reliability of power transmission, and can maintain a stable transmission effect even under complex working conditions, reducing the failure rate. The motor and the transmission gear 320 cooperate to enable the roll changing vehicle 10 to move bidirectionally on the supporting roll changing track 20, flexibly responding to roll changing requirements in different directions, and improving the adaptability and operational flexibility of the equipment.

[0058] In the embodiment of the present invention, at least two motors are provided, each motor is provided with a transmission gear 320 , and each transmission gear is respectively meshed with the rack 23 in a transmission manner.

[0059] By arranging a plurality of motors and transmission gears 320 on the vehicle body 100, the plurality of motors can cooperate with each other to increase the driving force, thereby better meeting the driving needs.

[0060] Designers can adjust the specific number and arrangement of motors according to usage requirements, and no specific restrictions are imposed here. Figure 4 In the embodiment described above, when two motors are provided, the two motors are respectively connected to the two racks 23 via the transmission gear 320 .

[0061] The roll-changing vehicle 10 further includes a control module, which is electrically connected to the motor, so that the movement state of the motor can be controlled by the control module, so that the multiple motors can work together to drive the roll-changing vehicle 10 .

[0062] In an embodiment of the present invention, Figure 1 and Figure 3 In the illustrated embodiment, the first attachment structure 410 includes a backup roll hook, and the second attachment structure 420 includes a work roll hook.

[0063] Specifically, the support roller hook is arranged on the vehicle body 100, and the support roller hook is arranged above the support roller hook through a fixing structure, so that the support roller hook and the support roller hook are arranged at different heights.

[0064] By designing the backup roller hook head and the backup roller hook head with double layers, the backup roller hook head and the backup roller hook head can adapt to backup rollers and working rolls of different sizes and types, thereby enhancing the adaptability and flexibility of the roll changing car 10, so that it can be better applied to various rolling mills.

[0065] In addition, the support roller hook and the working roller hook can be optimized for the support roller assembly and the working roller assembly respectively, ensuring firmness and reliability during the hooking process, reducing safety hazards caused by unstable hooking, and making the hooking operation simpler and faster, thereby improving the convenience and efficiency of operation.

[0066] The designer can adjust the specific shapes of the support roller hook and the working roller hook according to the use requirements, and no specific restrictions are made here. Preferably, the support roller hook is roughly constructed in a T shape, and the working roller hook is roughly constructed in a U shape.

[0067] In an embodiment of the present invention, Figure 1 In the illustrated embodiment, the car body 100 further includes a car platform 110 , which is disposed on the car body 100 via a support frame. The car platform 110 is configured to be disposed at the same height as the working roll changing track 50 .

[0068] By arranging the vehicle platform 110 on the vehicle body 100 through the support frame, the vehicle platform 110 can provide an operating space for the operator, thereby ensuring the smooth progress of the roller changing operation. The designer can adjust the specific structure of the vehicle platform 110 according to the use requirements, and no specific limitation is made here.

[0069] In an embodiment of the present invention, Figure 1 In the illustrated embodiment, the roll changing vehicle 10 further comprises a cover plate connecting structure 111 disposed on the vehicle platform 110 . The cover plate connecting structure 111 and the second hanging structure 420 are disposed at two ends of the vehicle platform 110 opposite to each other. The cover plate connecting structure 111 is used to connect the movable cover plate 30 .

[0070] By setting a cover connecting structure 111 on the vehicle platform 110, the cover connecting structure 111 can be connected with the movable cover 30, so that the movable cover 30 can move with the roll changing vehicle 10 to cover the top of the supporting roller changing track 20, thereby achieving full coverage of the travel range area, helping to improve safety during operation and maintenance, and providing a more user-friendly operation interface.

[0071] Designers can adjust the arrangement of the movable cover plate 30 according to usage requirements. For example, the movable cover plate 30 is arranged on the working roll changing track 50 and connected to the cover plate connecting structure 111. No specific limitation is made here.

[0072] In an embodiment of the present invention, Figure 1 In the illustrated embodiment, the roll changing vehicle 10 further includes a step ladder 120 disposed on the vehicle body 100 .

[0073] Specifically, the step ladder is arranged on the vehicle body 100 to connect to the ground, or the step ladder can also be arranged between the vehicle body 100 and the vehicle platform 110, thereby providing a movement path for the operator and improving the convenience of use. The designer can adjust the specific structure of the step ladder 120 according to the use requirements, and no specific limitation is made here.

[0074] Due to the heavy weight of the roll group, when the roll changing vehicle 10 is connected to the roll group, the roll changing vehicle 10 will be stressed and tilt forward as a whole when pulling the roll group, causing part of the roll changing vehicle 10 to be separated from the supporting roll changing track 20, thereby creating a safety risk. In addition, the roll changing vehicle 10 is likely to collide with the supporting roll changing track 20 after returning, which is likely to cause damage to the equipment and the track.

[0075] In order to solve the above problems, in an embodiment of the present invention, the roll changing vehicle 10 further includes an anti-tilt mechanism 500 disposed on the vehicle body 100 , and the anti-tilt mechanism 500 is movably connected to the supporting roller changing track 20 .

[0076] The anti-tilt mechanism 500 can keep the vehicle body 100 on the supporting roller changing track 20 to prevent the vehicle body 100 from leaving the supporting roller changing track 20 , thereby ensuring the movement stability of the vehicle body 100 and reducing safety risks.

[0077] Specifically, Figure 1 and Figure 4 In the illustrated embodiment, the anti-tipping mechanism 500 includes a plurality of anti-tipping wheels 510 , which are disposed on the vehicle body 100 via a connecting structure, and are disposed on the other side of the supporting roller changing track 20 relative to the supporting wheel set 200 .

[0078] By arranging the anti-tipping wheels 510 and the supporting wheel group 200 on both sides of the supporting roller changing track 20 opposite to each other, the anti-tipping wheels 510 and the supporting wheel group 200 cooperate to play a clamping role, so that the vehicle body 100 can be kept on the supporting roller changing track 20, avoiding the roll changing vehicle 10 from tipping over during use, and improving the safety of the roll changing vehicle 10.

[0079] The designer can adjust the specific number and structure of the anti-tipping wheels 510 according to the use requirements, and no specific limitation is made here. For example, four anti-tipping wheels 510 are provided, and the four anti-tipping wheels 510 are distributed at the four corners of the vehicle body 100 and abut against the bottom surface of the supporting roller changing track 20, so that the four anti-tipping wheels 510 can play a multi-point limiting role.

[0080] Of course, in other feasible embodiments, designers can adjust the number and arrangement of the anti-tipping wheels 510 according to usage requirements, and no specific numerical limit is imposed herein.

[0081] In an embodiment of the present invention, Figure 2 and Figure 4In the illustrated embodiment, the support roller changing track 20 includes two support roller changing guide rails arranged in parallel, one of which is a flat rail 21, and the other is a V-shaped rail 22; the support wheel group 200 includes a plurality of first support wheels 210 arranged on the flat rail 21, and a plurality of second support wheels 220 arranged on the V-shaped rail 22, and the second support wheels 220 are matched and connected with the V-shaped rail 22.

[0082] By matching the second support wheel 220 with the V-shaped rail 22, the V-shaped rail 22 provides a limiting and guiding function, ensuring that the roll-changing vehicle 10 runs smoothly along the V-shaped rail 22 during movement, reducing deviation and shaking, and improving operational stability and reliability.

[0083] Furthermore, the combined design of the flat rail 21 and the V-shaped rail 22 makes the weight distribution of the roll-changing vehicle 10 more uniform, reduces the burden of a single guide rail, and prolongs the service life of the guide rail and the supporting wheel.

[0084] Of course, in other feasible embodiments, designers can adjust the shape and structure of the support roller changing guide rail according to usage requirements, and no specific restrictions are made here.

[0085] In an embodiment of the present invention, Figure 3 In the illustrated embodiment, the roll-changing vehicle 10 further includes a cable retracting mechanism 600 disposed on the vehicle body 100 , and the cable retracting mechanism 600 is used to release or retract the cable connected to the power mechanism 300 .

[0086] By arranging the cable retracting and releasing mechanism 600 on the vehicle body 100, the cable can be retracted and released by using the cable retracting and releasing mechanism 600, thereby reducing the situation where the cables are scattered on the ground, avoiding the risk of the operator tripping or the equipment being damaged, and improving the safety of the operation.

[0087] Furthermore, the cable can be managed and controlled by the cable retracting mechanism 600, so as to avoid the cable from getting tangled or knotted when the cable moves with the vehicle body 100, thereby ensuring the normal use of the cable and reducing the probability of failure. The cable retracting mechanism 600 reduces the wear of the cable during the dragging process, prolongs the service life of the cable, and reduces the maintenance cost.

[0088] The designer can adjust the specific structure of the cable retracting mechanism 600 according to the use requirements, and no specific limitation is made here. Preferably, the cable retracting mechanism 600 includes a cable drum and a retracting driving device for driving the cable drum to rotate.

[0089] Further, such as Figure 2In the illustrated embodiment, a cable receiving groove 24 for receiving cables may be provided between the two supporting roller changing guide rails, so that the cables can be placed in the cable receiving groove 24 during use, thereby preventing the cables from being scattered on the ground.

[0090] Implementation Method 2

[0091] Please refer to Figure 5 and Figure 6 As shown, an embodiment of the present invention further discloses a roll changing assembly, including a roll changing car 10 as described in the first embodiment, and a roll changing transition car 40, wherein the roll changing car 10 is used to be arranged on a supporting roll changing track 20, and the roll changing transition car 40 is used to be arranged on a working roll changing track 50, and the working roll changing track 50 is located above the supporting roll changing track 20, and the roll changing car 10 can also be connected to the roll changing transition car 40 through a second hanging structure 420.

[0092] The specific structure, working principle and beneficial effects of the roll changing car 10 are the same as those described in the above-mentioned embodiment, and will not be described in detail here. By movably arranging the roll changing transition car 40 on the working roll changing track 50, after the roll changing transition car 40 is connected to the roll changing car 10, the roll changing car 10 can push the roll changing transition car 40 to move along the working roll changing track 50, so that the new roll can be pushed in and the old roll can be pulled out by the cooperation of the roll changing car 10 and the roll changing transition car 40.

[0093] The designer can adjust the specific shape of the roll-changing transition car 40 according to the use requirements, and no specific restrictions are made here. Preferably, a third hanging structure is provided on the roll-changing transition car 40. More preferably, the third hanging structure includes a first connecting hook 41 arranged at one end of the roll-changing transition car 40, and a second connecting hook 42 arranged at the other end of the roll-changing transition car 40, and the roll-changing transition car 40 is detachably connected to the second hanging structure 420 of the roll-changing car 10 through the connecting hook, and the second connecting hook 42 can be used to connect the second hanging structure 420 of the working roll.

[0094] Designers can adjust the specific shapes and structures of the first connecting hook 41 and the second connecting hook 42 according to usage requirements, and no specific limitation is made here.

[0095] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0096] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A roll changing vehicle, used to be arranged on a support roll changing track, characterized in that: The roll changing vehicle comprises: Vehicle body; A supporting wheel group, the supporting wheel group is arranged at the bottom of the vehicle body, and the supporting wheel group is movably arranged on the supporting roller changing track; A power mechanism, the power mechanism is arranged on the vehicle body, and the power mechanism is used to drive the vehicle body to move along the supporting roller changing track; A hook assembly, the hook assembly includes a first hanging structure and a second hanging structure arranged on the vehicle body, the second hanging structure is arranged above the first hanging structure, the first hanging structure is used to connect the support roller assembly, and the second hanging structure is used to connect the working roller assembly.

2. The roll changing vehicle according to claim 1, characterized in that: The power mechanism comprises a power device and a transmission structure arranged on the power device, and the transmission structure is transmissionably connected to the support roller changing track.

3. The roll changing vehicle according to claim 2, characterized in that: The supporting roller changing track includes two supporting roller changing guide rails arranged in parallel, and racks are provided on the two supporting roller changing guide rails, and the two racks are arranged opposite to each other; the power device includes a motor arranged on the vehicle body, and the transmission structure includes a transmission gear arranged on the rotating shaft of the motor, and the transmission gear is transmissionably meshed with any of the racks.

4. The roll changing vehicle according to claim 3, characterized in that: At least two motors are provided, each of which is provided with a transmission gear, and each transmission gear is respectively meshed with the rack in a transmission manner.

5. The roll changing vehicle according to claim 1, characterized in that: The first hanging structure includes a support roll hook, and the second hanging structure includes a working roll hook.

6. The roll changing vehicle according to claim 1, characterized in that: The vehicle body further comprises a vehicle platform, which is arranged on the vehicle body via a supporting frame, and the vehicle platform is used to be arranged at the same height as the working roll changing track.

7. The roll changing vehicle according to claim 6, characterized in that: The roll-changing vehicle further comprises a cover plate connecting structure arranged on the vehicle platform. The cover plate connecting structure and the second hanging structure are arranged at two ends of the vehicle platform opposite to each other. The cover plate connecting structure is used to connect a movable cover plate.

8. The roll changing vehicle according to claim 6, characterized in that: The roll changing vehicle further comprises a step ladder arranged on the vehicle body.

9. The roll changing vehicle according to claim 1, characterized in that: The roll-changing vehicle further comprises an anti-tilting mechanism arranged on the vehicle body, and the anti-tilting mechanism is movably connected to the supporting roller roll-changing track.

10. The roll changing vehicle according to claim 9, characterized in that: The anti-tipping mechanism comprises a plurality of anti-tipping wheels, which are arranged on the vehicle body via a connecting structure, and are arranged on the other side of the supporting roller changing track relative to the supporting wheel group.

11. The roll changing vehicle according to claim 1, characterized in that: The supporting roller changing track includes two supporting roller changing guide rails arranged in parallel, one of which is a flat rail and the other is a V-shaped rail; the supporting wheel group includes a plurality of first supporting wheels arranged on the flat rail and a plurality of second supporting wheels arranged on the V-shaped rail, and the second supporting wheels are matched and connected with the V-shaped rail.

12. The roll changing vehicle according to claim 1, characterized in that: The roll-changing vehicle further comprises a cable retracting and releasing mechanism arranged on the vehicle body, and the cable retracting and releasing mechanism is used for releasing or retracting the cable connected to the power mechanism.

13. A roller changing assembly, characterized in that: It comprises a roll changing car as described in any one of claims 1 to 10, and a roll changing transition car, the roll changing car is used to be set on a supporting roll changing track, the roll changing transition car is used to be set on a working roll changing track, the working roll changing track is located above the supporting roll changing track, and the roll changing car can also be connected to the roll changing transition car through a second hanging structure.

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