Anti-tipping coil loading and unloading trolley and use method thereof

Abstract

The present invention provides an anti-tipping coil loading and unloading trolley and a method of using the same, comprising a hollow trolley body and a lifting base placed in the trolley body and capable of being lifted and lowered in a vertical direction, a lifting platform being fixed on the top of the lifting base, a plurality of double-rod hydraulic cylinders being arranged below the lifting platform, a roller seat being installed in the middle of the upper part of the lifting platform, two rollers being arranged side by side on the roller seat for supporting coils; a plurality of clamping devices being hinged on the lifting platform, the plurality of clamping devices being symmetrically arranged at the axial ends of the rollers in groups of two, the lower end of each group of clamping devices passing through the lifting platform and connected to the piston rod of a double-rod hydraulic cylinder, and the clamping device being controlled by the double-rod hydraulic cylinder to clamp or loosen the coil supported on the rollers. The present invention solves the problem that shaking is easy to occur during the loading and unloading process, and that tipping may occur in severe cases.

Description

Technical Field

[0001] The invention belongs to the field of cold rolling mill equipment, and in particular relates to an anti-tipping coil loading and unloading trolley and a use method thereof. Background Art

[0002] The coil loading and unloading trolley is a necessary equipment for the cold rolling unit. The traditional coil loading and unloading trolley is driven by a motor and raised and lowered by a cylinder. When loading, the coil to be rolled is transported from the saddle to the unwinder drum. Conversely, when unloading, the rolled coil is transported to the saddle. When the width of the coil is narrow, the coil diameter-width ratio will be too large, the center of gravity will be unstable, and shaking will often occur during the loading and unloading process. Improper operation may even cause a serious accident of the coil tipping over, causing personal injury, equipment damage, and property loss. Summary of the invention

[0003] In order to solve the risks that may occur during the coil loading and unloading process, the purpose of the present invention is to provide an anti-tipping coil loading and unloading trolley and a method of using the same, which utilizes a double-rod hydraulic cylinder to drive a clamping device to clamp the coil, and has the characteristics of simple structure, convenient operation, flexible movement, stability and reliability.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A roll unloading trolley with an anti-tipping function comprises a hollow trolley body and a lifting base placed in the trolley body and capable of being lifted and lowered in a vertical direction, a lifting platform located above the trolley body is fixed on the top of the lifting base, a plurality of double-rod hydraulic cylinders are arranged below the lifting platform, a roller seat is installed in the upper middle part of the lifting platform, two rollers are arranged side by side on the roller seat for supporting the roll; a plurality of clamping devices for clamping the two sides of the roll are also hinged on the lifting platform, a plurality of clamping devices are symmetrically arranged in groups of two at the axial ends of the rollers, the lower end of each group of clamping devices passes through the lifting platform and is connected to the piston rod of a double-rod hydraulic cylinder, and the double-rod hydraulic cylinder controls the clamping device to clamp or loosen the roll supported on the rollers.

[0006] Furthermore, the clamping device includes a connecting rod and a pressure plate, the connecting rod is hinged on the lifting platform, and the upper end of the connecting rod is connected to the pressure plate, the lower end of the connecting rod passes through the lifting platform and is connected to the piston rod of the double-rod hydraulic cylinder, and the piston rod of the double-rod hydraulic cylinder drives the connecting rod to rotate, pushing the pressure plate to move inward or outward, thereby achieving the clamping or loosening of the coiled material on the roller.

[0007] Furthermore, a through hole corresponding to the connecting rod is opened on the lifting platform. After the upper end of the connecting rod passes through the through hole provided on the lifting platform, it is hinged to the pressure plate through a pin shaft; after the lower end of the connecting rod passes through the through hole provided on the lifting platform, it is hinged to the piston rod of the double-rod hydraulic cylinder through a pin shaft.

[0008] Preferably, a plurality of positioning plates are also provided on the lifting platform, and the positioning plates are arranged in parallel in groups of two on both sides of the connecting rod, and pin shaft holes are provided on the positioning plates, and a positioning long hole is provided at the lower end of the connecting rod. The connecting rod is hinged between the two positioning plates by a pin shaft passing through the pin shaft hole and the positioning long hole.

[0009] Preferably, several groups of fasteners for clamping and fixing the double-rod hydraulic cylinder are arranged under the lifting platform, and the several groups of fasteners are arranged at intervals along the axial direction of the roller, and each group of fasteners includes two parallel ear plates, and the ear plates are provided with fixing holes, and bolts are installed in the fixing holes. After passing through the fixing holes, the bolts are threadedly connected with nuts and clamp the double-rod hydraulic cylinder between the ear plates.

[0010] Preferably, the clamping device is provided with two groups, and the four connecting rods of the two groups of clamping devices are respectively hinged at the four corners of the lifting platform. After the upper ends of the four connecting rods pass through the four through holes provided at the four corners of the lifting platform, they are respectively hinged to the four pressure plates; after the lower ends of the four connecting rods pass through the four through holes provided at the four corners of the lifting platform, they are respectively connected to the piston rods of two double-rod hydraulic cylinders fixed under the lifting platform. The two double-rod hydraulic cylinders drive the four connecting rods to rotate synchronously, and drive the four pressure plates to clamp the two sides of the coil.

[0011] Furthermore, the roller seat is fixed on the lifting platform by bolts.

[0012] Furthermore, the pressing plate is arranged to be inclined toward the coil direction.

[0013] Furthermore, a travel motor is provided at the bottom of the trolley body to drive the trolley body to travel.

[0014] A method for using an anti-tipping coil loading and unloading trolley, comprising:

[0015] 1) Coiling: The piston rod of the double-rod hydraulic cylinder is retracted, the lifting base is lowered to the lowest position, the trolley body moves to the bottom of the coil, the lifting base is raised, the rollers lift the coil, the piston rods of the double-rod hydraulic cylinder extend to both ends to drive the connecting rod to rotate, the pressure plate moves inward to clamp the coil, the trolley body moves to the coiling position, the lifting base adjusts the height to align the center of the coil with the center of the uncoiler drum, the trolley body moves to send the coil into the uncoiler drum, the piston rod of the double-rod hydraulic cylinder is retracted to drive the connecting rod to rotate, the pressure plate moves outward to release the coil to be rolled, the lifting base descends to the low position, the trolley body moves to the initial position, and the coiling process is completed;

[0016] 2) Unloading: The piston rod of the double-rod hydraulic cylinder is retracted, the lifting base is lowered to the lowest position, the trolley body moves to the bottom of the coil, the lifting base is raised, the rollers lift the coil, the piston rods of the double-rod hydraulic cylinder extend to both ends to drive the connecting rod to rotate, the pressure plate moves inward to clamp the coil, the trolley body moves to the saddle seat, the lifting base descends until the coil falls into the saddle storage position, the piston rod of the double-rod hydraulic cylinder is retracted to drive the connecting rod to rotate, the pressure plate moves outward to release the rolled coil, the lifting base falls to a low position, the trolley body moves to the initial position, and the unloading process is completed.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention utilizes a double-rod hydraulic cylinder to drive a clamping device to clamp the coil, which can clamp the coil quickly and effectively during the coil loading and unloading process, thereby solving the problem of the coil loading and unloading trolley being prone to shaking or tipping during transportation, and reducing the accident rate.

[0019] 2. The present invention has the characteristics of simple structure, convenient adjustment, flexible action, stability and reliability.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in 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 paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the working state of the present invention.

[0024] Description of reference numerals:

[0025] 1. Roller; 2. Pressing plate; 3. Connecting rod; 4. Double-rod hydraulic cylinder; 5. Lifting base; 6. Trolley body; 7. Coil; 8. Lifting platform; 9. Positioning plate; 10. Ear plate. DETAILED DESCRIPTION

[0026] 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.

[0027] The following is an explanation of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0028] First embodiment

[0029] The first embodiment of the present invention relates to an anti-tilt loading and unloading roll trolley, such as Figure 1 As shown, it includes a hollow trolley body 6, and a lifting base 5 placed in the trolley body 6 and capable of being lifted and lowered in a vertical direction, a lifting platform 8 located above the trolley body 6 is fixed on the top of the lifting base 5, a plurality of double-rod hydraulic cylinders 4 are arranged below the lifting platform 8, a roller seat is installed in the upper middle part of the lifting platform 8, two rollers 1 are arranged side by side on the roller seat for supporting the coiled material; a plurality of clamping devices for clamping the two sides of the coiled material are also hinged on the lifting platform 8, and a plurality of clamping devices are symmetrically arranged at the axial ends of the rollers 1 in groups of two, and the lower end of each group of clamping devices passes through the lifting platform 8 and is connected to the piston rod of a double-rod hydraulic cylinder 4, and the double-rod hydraulic cylinder 4 controls the clamping device to clamp or release the coiled material supported on the rollers 1.

[0030] The working principle of the present invention is as follows: when rolling up, the piston rod of the double-rod hydraulic cylinder 4 is retracted, the lifting base 5 is lowered to the lowest position, the trolley body 6 moves to the bottom of the coil 7, the lifting base 5 is raised, the roller 1 lifts the coil 7, the piston rods of the double-rod hydraulic cylinder 4 are extended to both ends to drive the connecting rod 3 to rotate, the pressure plate 2 moves inward to clamp the coil, the trolley body 6 moves to the upper rolling position, the lifting base 5 adjusts the height to align the center of the coil with the center of the uncoiler drum, the trolley body 6 moves to send the coil into the uncoiler drum, the piston rod of the double-rod hydraulic cylinder 4 is retracted to drive the connecting rod 3 to rotate, the pressure plate 2 moves outward to release the coil to be rolled, the lifting base 5 drops to a low position, the trolley body 6 moves to the initial position, and the rolling process is completed.

[0031] When unloading the coil, the piston rod of the double-rod hydraulic cylinder 4 is retracted, the lifting base 5 is lowered to the lowest position, the trolley body 6 moves to the bottom of the coil 7, the lifting base 5 is raised, the roller 1 lifts the coil 7, the piston rods of the double-rod hydraulic cylinder 4 are extended to both ends to drive the connecting rod 3 to rotate, the pressure plate 2 moves inward to clamp the coil, the trolley body 6 moves to the saddle seat, the lifting base 5 descends until the coil 7 falls into the saddle storage position, the piston rod of the double-rod hydraulic cylinder 4 is retracted to drive the connecting rod 3 to rotate, the pressure plate 2 moves outward to release the rolled coil, the lifting base 5 falls to a low position, the trolley body 6 moves to the initial position, and the unloading process is completed.

[0032] The present invention adds a fully automatic hydraulic clamping system on the basis of the traditional coil loading trolley. The coil is clamped by driving the clamping device through a double-rod hydraulic cylinder, which solves the problem that during the cold rolling process of the coil, when the width of the coil is narrow, the center of gravity of the coil is unstable, and the coil is prone to shaking during loading and unloading, and may even tip over in severe cases.

[0033] Second embodiment

[0034] This embodiment provides an anti-tipping loading and unloading roll trolley, such as Figure 2 As shown, it includes a hollow trolley body 6, and a lifting base 5 placed in the trolley body 6 and capable of being lifted and lowered in the vertical direction, a lifting platform 8 located above the trolley body 6 is fixed on the top of the lifting base 5, a plurality of double-rod hydraulic cylinders 4 are arranged below the lifting platform 8, a roller seat is installed in the upper middle part of the lifting platform 8, two rollers 1 are arranged side by side on the roller seat for supporting the coil; a plurality of clamping devices for clamping the two sides of the coil are also hinged on the lifting platform 8, and the plurality of clamping devices are symmetrically arranged in groups of two at the axial ends of the rollers 1, and the lower end of each group of clamping devices passes through the lifting platform 8 and is connected to the lifting platform 8. The connecting rod 3 is connected to the piston rod of a double-rod hydraulic cylinder 4; specifically, the clamping device includes a connecting rod 3 and a pressure plate 2, the connecting rod 3 is hinged on the lifting platform 8, and a through hole corresponding to the connecting rod 3 is opened on the lifting platform 8. After the upper end of the connecting rod 3 passes through the through hole provided on the lifting platform 8, it is hinged to the pressure plate 2 through a pin; after the lower end of the connecting rod 3 passes through the through hole provided on the lifting platform 8, it is hinged to the piston rod of the double-rod hydraulic cylinder 4 through a pin, and the connecting rod 3 is driven to rotate by the piston rod of the double-rod hydraulic cylinder 4, pushing the pressure plate 2 to move inward or outward, so as to realize the clamping or loosening of the coiled material on the roller 1.

[0035] Third embodiment

[0036] On the basis of the above embodiment, further, a plurality of positioning plates 9 are further provided on the lifting platform 8, and the positioning plates 9 are vertically welded to both sides of the connecting rod 3 in groups of two, and a pin hole is provided on the positioning plate 9, and a positioning long hole is provided at the lower end of the connecting rod 3, and the pin passes through the pin hole and the positioning long hole to hinge the connecting rod 3 between the two positioning plates 9. It is worth mentioning that the connecting rod 3 can rotate around the pin under the drive of the double-rod hydraulic cylinder 4, and the pin can move in a small range in the up and down direction of the positioning long hole, ensuring that the connecting rod 3 can rotate flexibly at the hinge axis.

[0037] Fourth embodiment

[0038] On the basis of the above embodiment, preferably, several groups of fasteners for clamping and fixing the double-rod hydraulic cylinder 4 are arranged below the lifting platform 8, and the several groups of fasteners are arranged at intervals along the axial direction of the roller 1, and each group of fasteners includes two parallel ear plates 10, and the ear plates 10 are provided with fixing holes, and bolts are installed in the fixing holes. After passing through the fixing holes, the bolts are threadedly connected with nuts and clamp the double-rod hydraulic cylinder 4 between the ear plates 10. The present invention fixes the ear shaft of the double-rod hydraulic cylinder through the ear plates, and fixes the ear plates to the lifting platform 8 through bolts, which is reliable in operation and easy to disassemble.

[0039] Fifth embodiment

[0040] As a preferred embodiment, this embodiment relates to an anti-tipping roll loading and unloading trolley, such as Figure 2 As shown, it includes a hollow trolley body 6, and a lifting base 5 placed in the trolley body 6 and capable of being lifted and lowered in the vertical direction, a lifting platform 8 located above the trolley body 6 is fixed on the top of the lifting base 5, two double-rod hydraulic cylinders 4 are arranged below the lifting platform 8, a roller seat is fixedly installed in the upper middle part of the lifting platform 8 by bolts, and two rollers 1 are arranged side by side on the roller seat for supporting the coil; a clamping device for clamping the two sides of the coil is also hinged on the lifting platform 8, and the clamping device is provided with two groups, and the four The four connecting rods 3 are hinged at the four corners of the lifting platform 8, and the upper ends of the four connecting rods 3 pass through the four through holes set at the four corners of the lifting platform 8, and are respectively hinged to four pressure plates 2 inclined toward the direction of the coil; the lower ends of the four connecting rods 3 pass through the four through holes set at the four corners of the lifting platform 8, and are respectively connected to the piston rods of two double-rod hydraulic cylinders 4 fixed under the lifting platform 8. The two double-rod hydraulic cylinders 4 drive the four connecting rods 3 to rotate synchronously, and drive the four pressure plates 2 to move inward or outward, and cooperate with each other to complete the clamping or loosening of the clamping side.

[0041] Furthermore, a travel motor is provided at the bottom of the trolley body 6 to drive the trolley body 6 to travel.

[0042] This embodiment also provides a method for using the anti-tipping loading and unloading roll trolley, including:

[0043] 1) Coiling: The piston rod of the double-rod hydraulic cylinder 4 is retracted, and the lifting base 5 is driven to the lowest position by the lifting cylinder. The trolley body 6 moves to the bottom of the coil 7. The lifting base 5 is driven by the lifting cylinder to rise, and the roller 1 lifts the coil 7. The piston rods of the double-rod hydraulic cylinder 4 extend to both ends to drive the connecting rod 3 to rotate, the pressing plate 2 moves inward to clamp the coil, and the trolley body 6 moves to the upper coiling position. The lifting base 5 adjusts the height to align the center of the coil with the center of the uncoiler drum. The trolley body 6 moves to feed the coil into the uncoiler drum. The piston rod of the double-rod hydraulic cylinder 4 is retracted to drive the connecting rod 3 to rotate, the pressing plate 2 moves outward to release the coil to be rolled, the lifting base 5 descends to a low position, and the trolley body 6 moves to the initial position to complete the coiling process;

[0044] 2) Unloading: The piston rod of the double-rod hydraulic cylinder 4 is retracted, and the lifting base 5 is driven by the lifting cylinder to the lowest position. The trolley body 6 moves to the bottom of the coil 7. The lifting base 5 is driven by the lifting cylinder, and the roller 1 lifts the coil 7. The piston rods of the double-rod hydraulic cylinder 4 extend to both ends to drive the connecting rod 3 to rotate, the pressure plate 2 moves inward to clamp the coil, the trolley body 6 moves to the saddle seat, and the lifting base 5 descends until the coil 7 falls into the saddle storage position. The piston rod of the double-rod hydraulic cylinder 4 is retracted to drive the connecting rod 3 to rotate, the pressure plate 2 moves outward to release the rolled coil, the lifting base 5 falls to a low position, and the trolley body 6 moves to the initial position to complete the unloading process.

[0045] The invention has a simple structure and is easy to operate. The double-rod hydraulic cylinder 4 drives the connecting rod to rotate and drive the pressing plate to clamp the coil, which not only realizes the automation of the operation process and achieves the function of fixing the coil, but also effectively solves the problem of shaking or tipping during transportation of the loading and unloading coil trolley, reduces the safety hazards of the operators during the operation, and improves the working environment of the operators. The method of the invention is simple and easy to operate, low in cost, high in reliability, meets the requirements of the production site and production process, and greatly improves the production efficiency of the enterprise.

[0046] In the present invention, the double-rod hydraulic cylinder 4, the lifting cylinder of the lifting base 5 and the travel motor of the trolley body 6 are all common power components of the winding trolley, which are well-known components in the industry and are not shown in the drawings.

[0047] The parts not specifically described in the above embodiments belong to well-known components and common structures or common means in the technical field, and will not be described in detail here.

[0048] The above is only a preferred embodiment of the present invention. The present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention. The above detailed description of the implementation mode of the present invention is combined with the accompanying drawings, but the present invention is not limited to the above implementation mode. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, which are all within the protection scope of the technology.

[0049] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

Claims

1. An anti-tipping unloading trolley, comprising a hollow trolley body (6), and a lifting base (5) disposed in the trolley body (6) and capable of being lifted and lowered in a vertical direction, characterized in that: A lifting platform (8) located above the trolley body (6) is fixed on the top of the lifting base (5), a plurality of double-rod hydraulic cylinders (4) are arranged below the lifting platform (8), a roller seat is installed in the middle of the upper part of the lifting platform (8), and two rollers (1) are arranged side by side on the roller seat for supporting the coiled material; a plurality of clamping devices for clamping the two sides of the coiled material are also hinged on the lifting platform (8), and the plurality of clamping devices are symmetrically arranged at the axial ends of the rollers (1) in groups of two, and the lower end of each group of clamping devices passes through the lifting platform (8) and is connected to the piston rod of a double-rod hydraulic cylinder (4), and the double-rod hydraulic cylinder (4) controls the clamping device to clamp or loosen the coiled material supported on the rollers (1); The clamping device comprises a connecting rod (3) and a pressing plate (2), wherein the connecting rod (3) is hinged on the lifting platform (8), and the upper end of the connecting rod (3) is connected to the pressing plate (2), and the lower end of the connecting rod (3) passes through the lifting platform (8) and is connected to the piston rod of the double-rod hydraulic cylinder (4), and the piston rod of the double-rod hydraulic cylinder (4) drives the connecting rod (3) to rotate, pushing the pressing plate (2) to move inward or outward, thereby achieving the clamping or loosening of the coiled material on the roller (1); The lifting platform (8) is provided with a through hole corresponding to the connecting rod (3); after the upper end of the connecting rod (3) passes through the through hole provided on the lifting platform (8), it is hinged to the pressing plate (2) through a pin; after the lower end of the connecting rod (3) passes through the through hole provided on the lifting platform (8), it is hinged to the piston rod of the double-rod hydraulic cylinder (4) through a pin; The lifting platform (8) is also provided with a plurality of positioning plates (9), the positioning plates (9) being arranged in parallel on both sides of the connecting rod (3) in pairs, and the positioning plates (9) are provided with pin holes, and the lower end of the connecting rod (3) is provided with a positioning long hole, and the connecting rod (3) is hinged between the two positioning plates (9) via a pin passing through the pin hole and the positioning long hole.

2. The anti-tilt loading and unloading trolley according to claim 1, characterized in that: A plurality of groups of fasteners for clamping and fixing the double-rod hydraulic cylinder (4) are arranged below the lifting platform (8), and the plurality of groups of fasteners are arranged at intervals along the axial direction of the roller (1), and each group of fasteners includes two parallel ear plates (10), the ear plates (10) are provided with fixing holes, and bolts are installed in the fixing holes. After passing through the fixing holes, the bolts are threadedly connected with nuts and clamp the double-rod hydraulic cylinder (4) between the ear plates (10).

3. The anti-tilt loading and unloading trolley according to claim 1, characterized in that: The clamping device is provided with two groups, and the four connecting rods (3) of the two groups of clamping devices are respectively hinged to the four corners of the lifting platform (8); the upper ends of the four connecting rods (3) respectively pass through the four through holes provided at the four corners of the lifting platform (8) and are respectively hinged to the four pressure plates (2); the lower ends of the four connecting rods (3) respectively pass through the four through holes provided at the four corners of the lifting platform (8) and are respectively connected to the piston rods of two double-rod hydraulic cylinders (4) fixed below the lifting platform (8); the two double-rod hydraulic cylinders (4) drive the four connecting rods (3) to rotate synchronously and drive the pressure plates (2) on both sides of the coil to clamp the coil.

4. The anti-tilt loading and unloading trolley according to claim 1, characterized in that: The roller seat is fixed on the lifting platform (8) by bolts.

5. The anti-tilt loading and unloading trolley according to claim 1, characterized in that: The pressing plate (2) is arranged to be inclined towards the coil direction.

6. The anti-tilt loading and unloading trolley according to claim 1, characterized in that: A travel motor is provided at the bottom of the trolley body (6) to drive the trolley body (6) to travel.

7. A method for using the anti-tipping loading and unloading trolley according to any one of claims 1 to 6, characterized in that: include: S1. Volume 1: The piston rod of the double-rod hydraulic cylinder (4) is retracted, the lifting base (5) is lowered to the lowest position, the trolley body (6) moves to the bottom of the coil (7), the lifting base (5) is raised, the roller (1) lifts the coil (7), the piston rods of the double-rod hydraulic cylinder (4) are extended to both ends to drive the connecting rod (3) to rotate, the pressure plate (2) moves inward to clamp the coil, the trolley body (6) moves to the upper coiling position, the lifting base (5) adjusts the height to align the center of the coil with the center of the uncoiler drum, the trolley body (6) moves to feed the coil into the uncoiler drum, the piston rod of the double-rod hydraulic cylinder (4) is retracted to drive the connecting rod (3) to rotate, the pressure plate (2) moves outward to release the coil to be rolled, the lifting base (5) is lowered to the low position, the trolley body (6) moves to the initial position, and the upper coiling process is completed; S2. Unloading: The piston rod of the double-rod hydraulic cylinder (4) is retracted, the lifting base (5) is lowered to the lowest position, the trolley body (6) moves to the bottom of the coil (7), the lifting base (5) is raised, the roller (1) lifts the coil (7), the piston rods of the double-rod hydraulic cylinder (4) extend to both ends to drive the connecting rod (3) to rotate, the pressure plate (2) moves inward to clamp the coil, the trolley body (6) moves to the saddle seat, the lifting base (5) descends to the coil (7) falls into the saddle storage position, the piston rod of the double-rod hydraulic cylinder (4) is retracted to drive the connecting rod (3) to rotate, the pressure plate (2) moves outward to release the rolled coil, the lifting base (5) falls to the low position, the trolley body (6) moves to the initial position, and the coil unloading process is completed.

Images