Quick roll change structure for heavy roll press equipment

Abstract

The utility model relates to roll -pressing equipment technical field especially, is particularly related to a kind of quick roll changing structure for heavy roll -pressing equipment, through modularization design and process optimization, the efficient safe replacement of heavy roll system is realized;Special dismounting slide rail and movable bending cylinder seat cooperation structure are set in upper and lower installation area, combined with the collaborative operation of bottom jacking module and transfer trolley, the efficiency of traditional roll changing operation is significantly improved;Innovative slide rail guiding system ensures that bending cylinder seat moves accurately along first dismounting slide rail, second dismounting slide rail, third dismounting slide rail, avoids positioning deviation in manual operation;The receiving track of transfer trolley is accurately connected with rack feeding track by the positioning hole of first connecting frame and second connecting frame, cooperates the chain drive of driving assembly, realizes the stable in and out of supporting plate;The supporting block of jacking module is matched with the bottom profile of lower roll system, combined with the design of avoiding slot on supporting plate, ensure that there is no interference in load transfer process.

Description

Technical Field

[0001] This utility model relates to the field of roller pressing equipment technology, and in particular to a quick roller changing structure for heavy-duty roller pressing equipment. Background Technology

[0002] Roll forming equipment is a key component in the formation of lithium battery electrodes. Its roller systems typically have large diameters and widths due to process requirements, with a single roller system weighing up to tens of tons. Traditional roller changing operations rely on manual steps such as disassembling bolts and hoisting adjustments, requiring multiple people to work together and suffering from low positioning accuracy and long processing times. Especially in scenarios involving frequent roller system changes, existing technology severely restricts production efficiency and may lead to safety accidents due to improper operation.

[0003] Currently, the mainstream roller changing method in the industry requires 6 to 8 operators to work continuously for more than 24 hours and relies on large lifting equipment, increasing maintenance costs. In addition, the hoisting of heavy components poses risks of slippage and collision, necessitating an efficient and safe quick-release structure and method to solve these problems. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a quick roll changing structure for heavy-duty roller pressing equipment.

[0005] The present invention adopts the following technical solution:

[0006] A quick roll changing structure for heavy-duty roller pressing equipment includes:

[0007] A roller pressing device includes a frame, an upper roller system, a lower roller system, and a bending cylinder system. The frame includes an upper mounting area and a lower mounting area that are interconnected. The upper roller system is mounted in the upper mounting area, and the lower roller system is mounted in the lower mounting area. The front and rear ends of the upper roller system are respectively provided with a first front bending cylinder seat and a first rear bending cylinder seat, and the front and rear ends of the lower roller system are respectively provided with a second front bending cylinder seat and a second rear bending cylinder seat. The upper mounting area is provided with a first disassembly slide rail, which is located at the rear end of the upper roller system. The first rear bending cylinder seat is slidably connected to the first disassembly slide rail. On the slide rail; the lower mounting area is provided with a second disassembly slide rail, the second disassembly slide rail is located at the rear end of the lower roller system, and the second rear bending cylinder seat is slidably connected to the second disassembly slide rail; the bottom center of the lower mounting area is provided with a lifting module for lifting and supporting the upper roller system or the lower roller system, and the bottom of the lower mounting area is also provided with a feeding track; the bending cylinder system includes a first front bending cylinder group connected to the first front bending cylinder seat, a first rear bending cylinder group connected to the first rear bending cylinder seat, a second front bending cylinder group connected to the second front bending cylinder seat, and a second rear bending cylinder group connected to the second rear bending cylinder seat;

[0008] The transfer trolley includes a conveyor vehicle, a receiving rail fixed to the top of the conveyor vehicle, and a pallet slidably connected to the receiving rail;

[0009] When the receiving track is connected to the feeding track, the pallet can slide along the receiving track and the feeding track into the lower installation area to receive and remove the upper roller system or the lower roller system.

[0010] Preferably, the upper roller system and the lower roller system have the same structure; both the upper roller system and the lower roller system include a pressure roller and two rotating bearings, and both ends of the pressure roller have connecting shafts extending from them, and the rotating bearings are assembled on the outer periphery of the connecting shafts.

[0011] Preferably, a first drive module is provided in the upper mounting area, and the first drive module is connected to the upper roller system through a first coupling; a second drive module is provided in the lower mounting area, and the second drive module is connected to the lower roller system through a second coupling.

[0012] Preferably, the lifting module includes a hydraulic cylinder and a support block disposed at the piston rod end of the hydraulic cylinder; the upper surface of the support block forms a support surface that matches the outer contour of the bottom of the lower roller system.

[0013] Preferably, connecting pins are provided between the first forward bend cylinder seat and the first forward bend cylinder assembly, the first rear bend cylinder seat and the first rear bend cylinder assembly, the second forward bend cylinder seat and the second forward bend cylinder assembly, and the second rear bend cylinder seat and the second rear bend cylinder assembly to achieve detachable connection.

[0014] Preferably, the transfer trolley further includes a drive assembly disposed on the upper end of the conveyor and drivenly connected to the pallet. The drive assembly includes a drive motor installed at one end of the receiving track and a transmission chain drivenly connected to the drive motor. The bottom of the pallet is connected to the transmission chain. The drive motor drives the transmission chain to rotate, thereby causing the pallet to slide along the receiving track and the feeding track.

[0015] Preferably, the pallet is provided with a clearance groove; when the pallet moves into the lower installation area, the lifting module corresponds to the clearance groove.

[0016] Preferably, a first connecting frame is fixedly provided on the side of the receiving track, and the first connecting frame is provided with a first positioning hole; a second connecting frame is fixedly provided on the side of the feeding track, and the second connecting frame is provided with a second positioning hole; when the receiving track and the feeding track are connected, the first positioning hole and the second positioning hole are aligned.

[0017] Preferably, the first disassembly slide rail is provided with a first sliding seat that is slidably connected thereto, and the first sliding seat is detachably connected to the first rear-bend cylinder seat; the second disassembly slide rail is provided with a second sliding seat that is slidably connected thereto, and the second sliding seat is detachably connected to the second rear-bend cylinder seat.

[0018] Preferably, the outer side of the frame is also provided with a housing, the housing including a rear housing and a front sealing door, and a sliding door is provided between the rear housing and the front sealing door.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model relates to a quick roll changing structure for heavy-duty roller press equipment. Through modular design and process optimization, it achieves efficient and safe replacement of heavy-duty roller systems. A dedicated disassembly slide rail and movable bending cylinder seat are designed in the upper and lower installation areas. Combined with the coordinated operation of the bottom lifting module and the transfer trolley, the efficiency of traditional roll changing operations is significantly improved. The innovative slide rail guiding system ensures precise movement of the bending cylinder seat along the first, second, and third disassembly slide rails, avoiding positioning deviations during manual operation. The material receiving track of the transfer trolley accurately aligns with the frame feeding track through the positioning holes of the first and second connecting frames. Combined with the chain drive of the drive component, this ensures smooth entry and exit of the pallet. The lifting module's support block matches the bottom contour of the lower roller system, and the anti-gap groove design on the pallet ensures interference-free load transfer. The entire system adopts a standardized process of disassembling the lower roller first and the upper roller last. Through detachable connection structures such as connecting pins and sliding seats, it can achieve rapid separation while ensuring the stability of equipment operation. This solution is particularly suitable for the maintenance of large-tonnage roller pressing equipment. Through the optimized design of the mechanical structure, it significantly reduces the intensity of manual operation and safety risks. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the quick roll changing structure for heavy-duty roller pressing equipment according to the present invention.

[0022] Figure 2 for Figure 1 Half-sectional view of a quick roll change structure for heavy-duty roller pressing equipment;

[0023] Figure 3 for Figure 1 A schematic diagram of the quick roll change structure for heavy-duty roller press equipment, showing some components hidden.

[0024] Figure 4 for Figure 3 Front view of a quick roll change structure for heavy-duty roller press equipment;

[0025] Figure 5This is a reference diagram showing the first state of the quick roll changing structure for heavy-duty roller pressing equipment according to this utility model.

[0026] Figure 6 for Figure 5 Side view of a quick roll change structure for heavy-duty roller press equipment;

[0027] Figure 7 This is a reference diagram showing the second state of the quick roll changing structure for heavy-duty roller pressing equipment of this utility model.

[0028] Figure 8 This is a reference diagram of the third state of the quick roll changing structure for heavy-duty roller pressing equipment of this utility model.

[0029] Figure 9 This is a reference diagram of the fourth state of the quick roll changing structure for heavy-duty roller pressing equipment of this utility model.

[0030] Numbering on the map:

[0031] 10-Rack; 11-Upper mounting area; 12-Lower mounting area;

[0032] 13-First disassembly slide rail; 14-Second disassembly slide rail;

[0033] 131 - First sliding seat; 141 - Second sliding seat;

[0034] 16-Feeding track; 17-Second connecting frame; 171-Second positioning hole;

[0035] 30 - Upper roller system; 40 - Lower roller system;

[0036] 31-Pressure roller; 32-Connecting shaft; 33-Rotating bearing; 34-First drive module; 35-First coupling; 36-Second drive module; 37-Second coupling;

[0037] 51-First forward bend cylinder seat; 52-First rear bend cylinder seat; 53-Second forward bend cylinder seat; 54-Second rear bend cylinder seat; 55-First forward bend cylinder assembly; 56-First rear bend cylinder assembly; 57-Second forward bend cylinder assembly; 58-Second rear bend cylinder assembly; 59-Connecting pin;

[0038] 60 - Lifting module; 61 - Hydraulic cylinder; 62 - Support block; 63 - Support surface;

[0039] 70-Transfer trolley; 71-Conveyor trolley; 72-Receiving track; 73-Pattern; 74-Void clearance groove; 75-Drive motor; 76-Transmission chain; 77-First connecting frame; 78-First positioning hole;

[0040] 80-Casing; 81-Rear casing; 82-Front sealing door; 83-Sliding door. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] like Figures 1 to 9The diagram shows a quick roll changing structure for a heavy-duty roller pressing device according to this invention, comprising a roller pressing device and a transfer trolley 70. The roller pressing device includes a frame 10, an upper roller system 30, a lower roller system 40, and a bending cylinder system. The frame 10 adopts a split design, forming an interconnected upper mounting area 11 and a lower mounting area 12. The upper roller system 30 is installed in the upper mounting area 11, and the lower roller system 40 is installed in the lower mounting area 12. The upper roller system 30 has a first front bending cylinder seat 51 and a first rear bending cylinder seat 52 at its front and rear ends, respectively. The lower roller system 40 has a second front bending cylinder seat 53 and a second rear bending cylinder seat 54 at its front and rear ends, respectively. The upper mounting area 11 has a first disassembly slide rail 13 located at the rear end of the upper roller system 30. The first front bending cylinder seat 51 is slidably connected to the first disassembly slide rail 13, and the first rear bending cylinder seat 52 is slidably connected to the second disassembly slide rail 14. The lower installation area 12 is provided with a second disassembly slide rail 14, located at the rear end of the lower roller system 40. The second rear bending cylinder seat 54 is slidably connected to the second disassembly slide rail 14. A lifting module 60 for lifting support is provided at the center of the bottom of the lower installation area 12, and a feeding track 16 is also provided at the bottom. The bending cylinder system includes a first front bending cylinder assembly 55 connected to the first front bending cylinder seat 51, a first rear bending cylinder assembly 56 connected to the first rear bending cylinder seat 52, a second front bending cylinder assembly 57 connected to the second front bending cylinder seat 53, and a second rear bending cylinder assembly 58 connected to the second rear bending cylinder seat 54. The transfer trolley 70 includes a conveyor 71, a receiving track 72 fixed to the top of the conveyor 71, and a pallet 73 slidably connected to the receiving track 72. When the receiving track 72 is connected to the feeding track 16, the pallet 73 can slide along the track into the lower installation area 12 to receive and remove the roller system.

[0045] When it is necessary to disassemble and maintain the upper roller system 30 and the lower roller system 40, the operating procedure is to first disassemble the lower roller system 40 and then disassemble the upper roller system 30.

[0046] Firstly, as Figure 5 and Figure 6 The lifting module 60 lifts and holds the lower roller system 40 to prevent it from falling, and disconnects the second front bending cylinder seat 53 and the second rear bending cylinder seat 54 at both ends of the lower roller system 40 from the bending cylinder system. Then, the second front bending cylinder seat 53 is moved out of the frame 10 to make room for the subsequent removal of the upper roller system 30 and the lower roller system 40, while the second rear bending cylinder seat 54 slides along the second disassembly slide rail 14 and disengages from the lower roller system 40. Next, the pallet 73 of the transfer trolley 70 extends into the lower mounting area 12, and the lifting module 60 releases pressure so that the lower roller system 40 is placed on the pallet 73. Finally, the lower roller system 40 is smoothly removed by the transfer trolley 70.

[0047] After disassembling the lower roller system 40, as follows: Figures 7 to 9As shown, the lifting module 60 lifts and holds the upper roller system 30 to prevent it from falling, and disconnects the first front bending cylinder seat 51 and the first rear bending cylinder seat 52 at both ends of the upper roller system 30 from the bending cylinder system; then the first front bending cylinder seat 51 is disassembled, and the first rear bending cylinder seat 52 slides backward along the first disassembly slide rail 13, so that the first front bending cylinder seat 51 and the first rear bending cylinder seat 52 are separated from the upper roller system 30; then the pallet 73 of the transfer trolley 70 extends into the lower installation area 12, and the lifting module 60 releases pressure so that the upper roller system 30 is placed on the pallet 73; finally, the upper roller system 30 is smoothly moved out by the transfer trolley 70.

[0048] The above structure and process enable the rapid disassembly of the upper roller system 30 and the lower roller system 40. The entire disassembly process does not require manual hoisting and can be completed in a short time with only a few operators, which greatly improves disassembly efficiency and safety.

[0049] The upper roller system 30 and the lower roller system 40 adopt a standardized design with consistent structure. Both the upper roller system 30 and the lower roller system 40 include a pressure roller 31 and two rotating bearings 33. The pressure roller 31 has connecting shafts 32 integrally formed at both ends. The rotating bearings 33 are assembled to the outer circumference of the connecting shafts 32 via a heat-fitting process. This symmetrical design not only simplifies spare parts management but also facilitates standardized disassembly operations. Furthermore, a first drive module 34 is located in the upper mounting area 11, and is connected to the connecting shafts 32 of the upper roller system 30 via a first coupling 35. A second drive module 36 is symmetrically arranged in the lower mounting area 12, and is connected to the connecting shafts 32 of the lower roller system 40 via a second coupling 37. Both the first drive module 34 and the second drive module 36 employ a servo motor paired with a planetary reducer. This design allows the upper roller system 30 and the lower roller system 40 to be separated from the drive system simply by disconnecting the coupling when disassembling the roller system, greatly simplifying the disassembly process.

[0050] The lifting module 60 is located at the center of the bottom of the lower installation area 12 and includes a hydraulic cylinder 61 and a support block 62. The hydraulic cylinder 61 is a high-tonnage synchronous hydraulic cylinder, and the support block 62 is installed at the top of its piston rod. The upper surface of the support block 62 is precision machined to form an arc-shaped support surface 63 that perfectly matches the outer contour of the bottom of the lower roller system 40, ensuring uniform force distribution during lifting. This lifting module 60 can precisely control the lifting and lowering movements of the lower roller system 40 and the upper roller system 30 during disassembly operations, providing reliable support for subsequent roller system transfer.

[0051] Connecting pins 59 are provided between the first forward bending cylinder seat 51 and the first forward bending cylinder assembly 55, between the first backward bending cylinder seat 52 and the first backward bending cylinder assembly 56, between the second forward bending cylinder seat 53 and the second forward bending cylinder assembly 57, and between the second backward bending cylinder seat 54 and the second backward bending cylinder assembly 58, to achieve detachable connections. This connection method ensures connection rigidity during operation and allows for quick separation during disassembly, greatly improving roller changing efficiency.

[0052] A drive assembly consisting of a drive motor 75 and a transmission chain 76 is installed on the upper end of the conveyor 71, and the bottom of the pallet 73 is connected to the transmission chain 76. The drive motor 75 is a servo motor, which is fixedly installed at one end of the receiving track 72 via a flange. The transmission chain 76 adopts a double-row roller chain structure and is reliably connected to the connector installed at the bottom of the pallet 73. When the drive motor 75 runs, it drives the transmission chain 76 to move, thereby driving the pallet 73 to slide smoothly along the receiving track 72 and the feeding track 16. The chain drive mechanism has the characteristics of high load-bearing capacity and smooth operation, and is suitable for the transfer operation of heavy roller systems.

[0053] The pallet 73 is equipped with a clearance groove 74. When the pallet 73 moves to its working position within the lower installation area 12, the clearance groove 74 corresponds precisely to the support block 62 of the lifting module 60, ensuring that the two do not interfere with each other. This design allows the pallet 73 to freely enter and exit the working area when the lifting module 60 is being raised or lowered, ensuring both the functionality of the equipment and avoiding the risk of structural collisions.

[0054] A first connecting frame 77 is welded and fixed to the side of the receiving track 72, and a first positioning hole 78 is machined on the first connecting frame 77. Correspondingly, a symmetrical second connecting frame 17 is provided on the side of the feeding track 16, and a second positioning hole 171 is machined on the second connecting frame 17. When the receiving track 72 and the feeding track 16 are docked, the first positioning hole 78 and the second positioning hole 171 are perfectly aligned, and then a precision-ground positioning pin is inserted to fix the receiving track 72 and the feeding track 16. This positioning structure can achieve fast and accurate track docking, providing a reliable guarantee for the safe transfer of the roller system.

[0055] The first disassembly slide rail 13 is provided with a first sliding seat 131 that is slidably connected thereto, and the first sliding seat 131 is detachably connected to the first rear-bend cylinder seat 52; the second disassembly slide rail 14 is provided with a second sliding seat 141 that is slidably connected thereto, and the second sliding seat 141 is detachably connected to the second rear-bend cylinder seat 54.

[0056] In addition, a housing 80 is provided on the outside of the frame 10. The housing includes a rear housing 81 and a front sealing door 82. A sliding door 83 is provided between the rear housing 81 and the front sealing door 82. The sliding door 83 facilitates temporary maintenance of the bending cylinder seat and bending cylinder system. When it is necessary to disassemble the upper roller system 30 and the lower roller system 40, only the front sealing door 82 needs to be disassembled, without disassembling the entire housing 80, which further reduces disassembly and maintenance costs.

[0057] The following details the operation process of the quick roll changing structure for heavy-duty roller pressing equipment according to this invention, including the following steps:

[0058] S1. Preparation for disassembly of the lower roller system: Start the lifting module 60 to lift the supporting lower roller system 40; disconnect the second front bending cylinder seat 53 from the second front bending cylinder group 57 and the second rear bending cylinder seat 54 from the second rear bending cylinder group 58.

[0059] S2. Removal of the lower roller bending cylinder seat: The second front bending cylinder seat 53 is moved out of the frame 10 in the horizontal direction, while the second rear bending cylinder seat 54 slides backward along the second disassembly slide rail 14 and disengages from the lower roller system 40.

[0060] S3. Lower roller system transfer: (e.g., ...) Figure 5 and Figure 6 As shown, the receiving track 72 of the control transfer trolley 70 is connected to the feeding track 16, and the drive plate 73 extends horizontally along the receiving track 72 into the lower installation area 12 and is located at the bottom of the lower roller system 40; the lifting module 60 depressurizes, causing the lower roller system 40 to fall onto the plate 73; the plate 73 carries the lower roller system 40 back to the conveyor trolley 71;

[0061] S4. Preparation for disassembly of the upper roller system: (as follows) Figure 7 As shown, the lifting module 60 is activated to lift and support the upper roller system 30, thereby disconnecting the first front bending cylinder seat 51 from the first front bending cylinder group 55 and the first rear bending cylinder seat 52 from the first rear bending cylinder group 56.

[0062] S5. Removal of the upper roller bending cylinder seat: The first front bending cylinder seat 51 is moved out of the frame 10 in the horizontal direction, and the first rear bending cylinder seat 52 is slid backward along the first disassembly slide rail 13 to disengage from the upper roller system 30.

[0063] S6. Upper roller system transfer: (e.g., ...) Figure 8 and Figure 9 As shown, the pallet 73 extends into the lower mounting area 12 again, and the lifting module 60 releases pressure to allow the upper roller system 30 to fall onto the pallet 73; the pallet 73 carries the upper roller system 30 back to the conveyor 71 to complete the disassembly.

[0064] Compared to existing technologies, the quick roll changing structure for heavy-duty roller presses disclosed in this invention achieves efficient and safe replacement of heavy-duty roller systems through modular design and process optimization. A dedicated disassembly slide rail and movable cylinder seat are fitted in the upper and lower installation areas 12, and combined with the coordinated operation of the bottom lifting module 60 and the transfer trolley 70, significantly improving the efficiency of traditional roll changing operations. The innovative slide rail guiding system ensures precise movement of the cylinder seat along the first disassembly slide rail 13, the second disassembly slide rail 14, and the third disassembly slide rail 15, avoiding positioning deviations during manual operation. The receiving track 72 of the transfer trolley 70 accurately connects with the feeding track 16 of the frame 10 through the positioning holes of the first connecting frame 77 and the second connecting frame 17, and, in conjunction with the chain drive of the drive assembly, enables the smooth entry and exit of the pallet 73. The support block 62 of the lifting module 60 matches the bottom contour of the lower roller system 40, and, combined with the anti-interference groove 74 design on the pallet 73, ensures interference-free load transfer. The entire system adopts a standardized process of disassembling the lower roller first and the upper roller last. Through detachable connection structures such as connecting pin 59 and sliding seat, it can achieve rapid separation while ensuring the stability of equipment operation. This solution is particularly suitable for the maintenance of large-tonnage roller pressing equipment. Through the optimized design of the mechanical structure, it significantly reduces the intensity of manual operation and safety risks.

[0065] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A quick roll changing structure for heavy-duty roller pressing equipment, characterized in that, include: A roller pressing device includes a frame, an upper roller system, a lower roller system, and a bending cylinder system. The frame includes an upper mounting area and a lower mounting area that are interconnected. The upper roller system is mounted in the upper mounting area, and the lower roller system is mounted in the lower mounting area. The front and rear ends of the upper roller system are respectively provided with a first front bending cylinder seat and a first rear bending cylinder seat, and the front and rear ends of the lower roller system are respectively provided with a second front bending cylinder seat and a second rear bending cylinder seat. The upper mounting area is provided with a first disassembly slide rail, which is located at the rear end of the upper roller system. The first rear bending cylinder seat is slidably connected to the first disassembly slide rail. On the slide rail; the lower mounting area is provided with a second disassembly slide rail, the second disassembly slide rail is located at the rear end of the lower roller system, and the second rear bending cylinder seat is slidably connected to the second disassembly slide rail; the bottom center of the lower mounting area is provided with a lifting module for lifting and supporting the upper roller system or the lower roller system, and the bottom of the lower mounting area is also provided with a feeding track; the bending cylinder system includes a first front bending cylinder group connected to the first front bending cylinder seat, a first rear bending cylinder group connected to the first rear bending cylinder seat, a second front bending cylinder group connected to the second front bending cylinder seat, and a second rear bending cylinder group connected to the second rear bending cylinder seat; The transfer trolley includes a conveyor vehicle, a receiving rail fixed to the top of the conveyor vehicle, and a pallet slidably connected to the receiving rail; When the receiving track is connected to the feeding track, the pallet can slide along the receiving track and the feeding track into the lower installation area to receive and remove the upper roller system or the lower roller system.

2. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, The upper and lower roller systems have the same structure; both the upper and lower roller systems include a pressure roller and two rotating bearings, and both ends of the pressure roller have connecting shafts extending from them, with the rotating bearings mounted on the outer periphery of the connecting shafts.

3. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, The upper mounting area is provided with a first drive module, which is connected to the upper roller system via a first coupling; the lower mounting area is provided with a second drive module, which is connected to the lower roller system via a second coupling.

4. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, The lifting module includes a hydraulic cylinder and a support block located at the piston rod end of the hydraulic cylinder; the upper surface of the support block forms a support surface that matches the outer contour of the bottom of the lower roller system.

5. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, Connecting pins are provided between the first forward bend cylinder seat and the first forward bend cylinder assembly, the first rear bend cylinder seat and the first rear bend cylinder assembly, the second forward bend cylinder seat and the second forward bend cylinder assembly, and the second rear bend cylinder seat and the second rear bend cylinder assembly to achieve detachable connection.

6. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, The transfer trolley also includes a drive assembly located on the upper end of the conveyor and connected to the pallet in a driving connection. The drive assembly includes a drive motor installed at one end of the receiving track and a transmission chain connected to the drive motor. The bottom of the pallet is connected to the transmission chain. The drive motor drives the transmission chain to rotate, thereby causing the pallet to slide along the receiving track and the feeding track.

7. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, The pallet is provided with a clearance groove; when the pallet moves into the lower installation area, the lifting module corresponds to the clearance groove.

8. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, A first connecting frame is fixedly provided on the side of the receiving track, and a first positioning hole is provided on the first connecting frame; a second connecting frame is fixedly provided on the side of the feeding track, and a second positioning hole is provided on the second connecting frame; when the receiving track and the feeding track are connected, the first positioning hole and the second positioning hole are aligned.

9. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, The first disassembly slide rail is provided with a first sliding seat that is slidably connected thereto, and the first sliding seat is detachably connected to the first rear-bend cylinder seat; the second disassembly slide rail is provided with a second sliding seat that is slidably connected thereto, and the second sliding seat is detachably connected to the second rear-bend cylinder seat.

10. The quick roll changing structure for heavy-duty roller pressing equipment according to claim 1, characterized in that, The frame is also provided with a housing, which includes a rear shell and a front sealing door, and a sliding door is provided between the rear shell and the front sealing door.

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