Roller stacking and transporting device and using method

Abstract

The invention discloses a roller stacking and transporting device and a using method, and relates to the field of roller stacking between rollers. The device is divided into a roller stacking frame and a roller conveying device, and specifically comprises a bottom plate, a supporting frame, trolley guide rails, a roller conveying trolley, a lifting trolley and a ground rail. The supporting frame is used for storing multiple rollers at the same time, and the roller conveying trolley and the lifting trolley are used for conveying the rollers in the vertical direction and the horizontal direction. The stacking capacity of the roller frame can be improved by increasing the number of stacked layers of the rollers, and the problem that the occupied area is large when the rollers are stacked is solved; the roller conveying device is driven by a motor and a hydraulic cylinder, and manual assistance is not needed in the whole process; according to the roller taking device, the rollers can be accurately taken, and the time needed for roller dispatching is shortened by reducing repeated work of the rollers; the device can be driven by the motor and the hydraulic cylinder in the whole process, and the working intensity of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of steel rolling off-line equipment, in particular to a roll stacking and transportation device, and also to a method for using the roll stacking and transportation device. Background Art

[0002] Steel rolling workshops usually need a lot of spare rolls and a lot of space for stacking rolls. Existing roll stacking devices are often welded from simple profiles, with a low number of stacking layers, and require a lot of space in the factory to place the roll racks, which reduces the utilization rate of the factory space. When hoisting the rolls, only the top rolls can be hoisted at a time; if the bottom rolls need to be moved, the top rolls need to be moved from high to low in sequence. Each hoisting requires manual fixation of the rolls on the hoist, which not only requires a lot of manual participation, but also requires long-term cooperation with the crane. It also takes a long time to complete, with low work efficiency and complicated steps. Summary of the invention

[0003] To this end, the present invention provides a roll stacking and transportation device. Compared with the traditional roll stacking rack, the present invention reduces the horizontal area between the rolls by increasing the space utilization rate in the height direction of the factory building; the roll transportation device is driven by a motor and a hydraulic cylinder, and no manual assistance is required throughout the process; the present invention can complete the precise picking up of the target roll in a single time, reduce the repetitive work during roll transportation, and reduce the time required for roll scheduling; the present invention can be driven by a motor and a hydraulic cylinder throughout the process, reducing the work intensity of workers to solve the above-mentioned problems in the prior art.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] According to a first aspect of the present invention, a roller stacking and transporting device comprises a base plate, a support frame, a trolley guide rail, a roller transport trolley, a lifting trolley and a ground track; a support frame made of welded parts is provided above the base plate, the support frame is divided into multiple layers, each layer is composed of multiple grids, two sections of trolley guide rails are laid in each grid for placing the roller transport trolley; two sections of ground track are provided on the ground, the lifting trolley is slidably set on the ground track, and a roller transport trolley is provided on the top of the lifting trolley.

[0006] Furthermore, the trolley guide rail is a crane rail, which is fixed to the support frame, compressed by a plurality of pressing blocks and fixed to the support frame by bolts.

[0007] Furthermore, the roller transport trolley includes a body, a wedge-shaped pad, a block, a guide wheel and a hook; the block is welded to the body, two sets of symmetrical wooden wedge-shaped pads are fixed in a set space by the block, the guide wheel is fixed under the body by a threaded connection, and a hook is provided on the side edge of the body.

[0008] Furthermore, the lifting trolley includes a base, wheels, a top device, a top lifting mechanism and a walking mechanism; the wheels of the lifting trolley are installed under the base, the wheels are in the form of a gear structure, a top lifting mechanism is arranged above the base, and the top device is connected to the top of the top lifting mechanism.

[0009] Furthermore, the ground guide rail is a rack mechanism, the ground guide rail is fixed on the foundation, a pad is provided under the ground guide rail and is pressed by a plurality of pressing blocks and fixed to the foundation by bolts, and the ground guide rail is engaged with the wheel.

[0010] Furthermore, the top device includes a top support plate, a trolley track, a stretching hydraulic cylinder, a stretching hydraulic cylinder seat, a hook head, a lifting hydraulic cylinder, a lifting hydraulic cylinder seat, a guide rail and a limit block; a trolley track is laid above the top support plate, and the specifications of the trolley track are the same as those of the trolley guide rail, so as to ensure that the roller transport trolley can pass smoothly on the two tracks; the stretching hydraulic cylinder is the main action unit for driving the roller transport trolley; the stretching hydraulic cylinder is fixed on the stretching hydraulic cylinder seat, and the front part of the stretching hydraulic cylinder has a hook head structure, and the hook head is used to interact with the hook to pull out the roller transport trolley; the lifting hydraulic cylinder is fixed on the lifting hydraulic cylinder seat, and the lifting hydraulic cylinder seat is fixed on the top support plate; the lifting hydraulic cylinder lifts the stretching hydraulic cylinder through action, the guide rail is fixed on the lifting hydraulic cylinder seat, and the limit block is fixed on the top support plate, and the guide rail and the limit block are used to limit the moving direction and movement of the stretching hydraulic cylinder seat.

[0011] Furthermore, the top lifting mechanism includes a hinge connecting rod, a long connecting rod, a lead screw, a lead screw nut, a lead screw guide rod, a bracket and a lifting motor; the lower end of the hinge connecting rod is connected to the long connecting rod, the long connecting rod is connected to the lead screw nut, the lead screw nut is connected to the lead screw to convert rotational motion into linear motion, the lead screw guide rod can reduce the shear force of the lead screw, and the lead screw is connected to the lifting motor, so that the lifting motor can drive the top device to move up and down through rotation; the bracket is used to fix the lead screw guide rod and the lead screw.

[0012] Furthermore, the walking mechanism includes a walking motor, a reducer and a transmission shaft; the walking motor is drivingly connected to the reducer, and the output shaft of the reducer is equipped with the transmission shaft; and both ends of the transmission shaft are respectively connected to a wheel.

[0013] Furthermore, there are four wheels in total, two of which are active wheels and two are passive wheels.

[0014] According to a second aspect of the present invention, a method for using a roll stacking and transporting device, according to any one of the roll stacking and transporting devices of the first aspect of the present invention, comprises the following steps:

[0015] S1: Start the travel motor, and when the lifting trolley is aligned with the row where the target rollers are located, turn off the travel motor;

[0016] S2: Start the lifting motor, which lifts the top device through the screw mechanism and the connecting rod device. When the trolley track on the top device is aligned with the trolley guide rail on the support frame where the target roller is located, turn off the lifting motor. At this time, the screw mechanism can stabilize the height of the top device through self-locking;

[0017] S3: Start and shorten the lifting hydraulic cylinder and lift the stretching hydraulic cylinder;

[0018] S4: starting and extending the stretching hydraulic cylinder, and when the hook head is located above the hook, closing the stretching hydraulic cylinder;

[0019] S5: Extend the lifting hydraulic cylinder, lower the stretching hydraulic cylinder, and when the hook head contacts the hook, close the lifting hydraulic cylinder;

[0020] S6: Start and shorten the stretching hydraulic cylinder, and when the roller transport trolley is transferred from the support frame to the lifting trolley, close the stretching hydraulic cylinder;

[0021] S7: Reverse and start the lifting motor, and when the top device drops to the lowest position, turn off the lifting motor;

[0022] S8: start the travel motor, and when the lifting trolley is transferred to the roller hoisting station, turn off the travel motor;

[0023] S9: Stack the rollers on the support frame and reverse the operations of S1-S8.

[0024] Compared with the prior art, the above-mentioned roller stacking and transportation device and its use method have the following beneficial effects:

[0025] 1. Compared with traditional lifting, workers need to place the slings on both sides of the rollers many times. In the long and repeated process, not only is there a possibility of scratching the bearing contact surface, but also uneven mass distribution and accidents of roller rollover. During use, the roller moves with the roller transport trolley, which will not damage the bearing contact surface, while reducing the risk of rollover, making it safer and more reliable.

[0026] 2. During use, the roller can be picked up accurately, that is, the target roller can be selected in one pick-up, which reduces the repetitive work of the roller and the time required for roller scheduling.

[0027] 3. During use, the whole process of automatic control of the roller from the support frame to the ground can be completed through detection devices such as proximity switches and encoders, which can reduce the workload of workers, reduce the time occupied by driving, and reduce the work intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of a roll stacking and transporting device provided for some embodiments of the present invention;

[0029] Figure 2 A perspective view of a roll transport trolley of a roll stacking and transporting device provided for some embodiments of the present invention;

[0030] Figure 3 A perspective view of a lifting trolley of a roll stacking and transporting device provided for some embodiments of the present invention;

[0031] Figure 4 A perspective view of a top device of a roll stacking and transporting device provided for some embodiments of the present invention;

[0032] Figure 5 A perspective view of a top lifting mechanism of a roll stacking and transporting device provided for some embodiments of the present invention;

[0033] Figure 6 A three-dimensional diagram of a traveling mechanism of a roller stacking and transporting device provided for some embodiments of the present invention.

[0034] In the figure: 1, bottom plate, 2, supporting frame, 3, trolley guide rail, 4, roller transport trolley, 5, lifting trolley, 6, ground track, 7, car body, 8, wedge-shaped pad, 9, block, 10, guide wheel, 11, hook, 12, base, 13, wheel, 14, top device, 15, top lifting mechanism, 16, walking mechanism, 17, top support plate, 18, trolley track, 19, stretching hydraulic cylinder, 20, stretching hydraulic cylinder seat, 21, hook head, 22, lifting hydraulic cylinder, 23, lifting hydraulic cylinder seat, 24, guide rail, 25, limit block, 26, hinge connecting rod, 27, long connecting rod, 28, lead screw, 29, lead screw nut, 30, lead screw guide rod, 31, bracket, 32, lifting motor, 33, walking motor, 34, reducer, 35, transmission shaft. DETAILED DESCRIPTION

[0035] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0036] Example 1

[0037] like Figure 1As shown, a roller stacking and transportation device in an embodiment of the first aspect of the present invention comprises a base plate 1, a support frame 2, a trolley guide rail 3, a roller transport trolley 4, a lifting trolley 5 and a ground track 6; a support frame 2 made of welded parts is provided above the base plate 1, the support frame 2 is divided into multiple layers, each layer is composed of multiple grids, two sections of trolley guide rails 3 are laid in each grid for placing the roller transport trolley 4; two sections of ground track 6 are provided on the ground, the lifting trolley 5 is slidably set on the ground track 6, and the roller transport trolley 4 is provided on the top of the lifting trolley 5.

[0038] In the above embodiment, it should be noted that the base plate 1 is provided with bolt holes for easy fixing on the foundation.

[0039] The technical effects achieved by the above embodiments are:

[0040] 1. Compared with traditional lifting, workers need to place the slings on both sides of the rollers many times. In the long and repeated process, not only is there a possibility of scratching the bearing contact surface, but also uneven mass distribution and accidents of roller rollover. During use, the roller moves with the roller transport trolley, which will not damage the bearing contact surface, while reducing the risk of rollover, making it safer and more reliable.

[0041] 2. During use, the roller can be picked up accurately, that is, the target roller can be selected in one pick-up, which reduces the repetitive work of the roller and the time required for roller scheduling.

[0042] 3. During use, the whole process of automatic control of the roller from the support frame to the ground can be completed through detection devices such as proximity switches and encoders, which can reduce the workload of workers, reduce the time occupied by driving, and reduce the work intensity of workers.

[0043] Example 2

[0044] like Figure 1 As shown, a roller stacking and transportation device includes all the contents of Example 1. In addition, the trolley guide rail 3 is a crane rail, which is fixed on the support frame 2, compressed by multiple pressure blocks and fixed to the support frame 2 by bolts.

[0045] Optional, such as Figure 2 As shown, the roller transport trolley 4 includes a body 7, a wedge-shaped pad 8, a stopper 9, a guide wheel 10 and a hook 11; the stopper 9 is welded to the body 7, two groups of symmetrical wooden wedge-shaped pads 8 are fixed in a set space by the stopper 9, the guide wheel 10 is fixed under the body 7 by a threaded connection, and a hook 11 is provided on the side edge of the body 7. Each group of guide wheels 10 consists of two wheels, which clamp the trolley guide rail 3 in the middle to prevent the roller transport trolley 4 from tipping over.

[0046] Optional, such as Figure 3As shown, the lifting trolley 5 includes a base 12, wheels 13, a top device 14, a top lifting mechanism 15 and a walking mechanism 16; the wheels 13 of the lifting trolley 5 are installed under the base 12, and the wheels 13 are in the form of a gear structure. A top lifting mechanism 15 is arranged above the base 12, and the top device 14 is connected to the top of the top lifting mechanism 15.

[0047] Example 3

[0048] like Figure 4 As shown, a roll stacking and transportation device includes all the contents of Example 2. In addition, the top device 14 specifically includes a top support plate 17, a trolley track 18, a stretching hydraulic cylinder 19, a stretching hydraulic cylinder seat 20, a hook head 21, a lifting hydraulic cylinder 22, a lifting hydraulic cylinder seat 23, a guide rail 24 and a limit block 25. The trolley track 18 is laid above the top support plate 17. The specifications of the trolley track 18 are the same as those of the trolley guide rail 3, and can ensure that the roll transport trolley 4 can pass smoothly on the two tracks; the stretching hydraulic cylinder 19 is fixed to the stretching hydraulic cylinder seat 20 through a support, and the stretching hydraulic cylinder 19 is the main action unit for pulling the roll transport trolley 4 out of the support frame 2; the hook head 21 is connected to the cylinder rod of the stretching hydraulic cylinder 19 through a threaded connection, and can contact the hook 11 to pull out the roll transport trolley 4; the stretching hydraulic cylinder seat 20 is connected to the lifting hydraulic cylinder 22 through the guide rail 24 The lifting hydraulic cylinder seat 23 is connected; the lifting hydraulic cylinder 22 is fixed on the lifting hydraulic cylinder seat 23 through a support; the lifting hydraulic cylinder seat 23 is welded on the top support plate 17, and the lifting hydraulic cylinder 22 can lift the stretching hydraulic cylinder 19 by contraction; the guide rail 24 is fixed on the lifting hydraulic cylinder seat 23 by bolts; the limit block 25 is welded on the top support plate 17; the guide rail 24 and the limit block 25 work together to limit the freedom of the stretching hydraulic cylinder seat 20, ensuring that the stretching hydraulic cylinder seat 20 only moves in the vertical direction and only within the working range.

[0049] Optional, such as Figure 5 The top lifting mechanism 15 shown specifically includes a hinge link 26, a long link 27, a lead screw 28, a lead screw nut 29, a lead screw guide rod 30, a bracket 31 and a lifting motor 32. The hinge link 26 is connected to the base 12 and the top device 14 through a hinge, and the lower end is connected to the long link 27. The hinge link 26 can convert horizontal movement into vertical movement; the long link 27 is connected to the lead screw nut 29 through a hinge mechanism; the lead screw nut 29 is connected to the lead screw 28, and the lead screw nut 29 and the lead screw 28 work together to convert rotational movement into linear motion, and the lead screw guide rod 30 can reduce the axial shear force of the lead screw 28; the lead screw 28 is connected to the lifting motor 32 through a coupling; thus, the lifting motor 32 can drive the top device 14 to move up and down by rotating; the bracket 31 fixes the lead screw guide rod 30 and the lead screw 28 to prevent them from axial movement.

[0050] Optional, such as Figure 4 The travel mechanism 16 shown specifically includes a travel motor 33, a reducer 34 and a transmission shaft 35. The travel motor 33 and the reducer 34 are connected by the transmission shaft 35. The two ends of the transmission shaft 35 are respectively connected to a wheel 13. The bevel gear in the reducer 34 can rotate the direction of movement by 90° and synchronize the travel speed of the left and right wheels 13. During the travel of the lifting trolley 5, two wheels have driving force, and the other two wheels act as passive wheels to keep the lifting trolley 5 balanced.

[0051] Example 4

[0052] like Figures 1 to 6 As shown, a method for using a roller stacking and transporting device comprises the following steps:

[0053] S1: Start the travel motor 33, and when the lifting trolley 5 is aligned with the row where the target rollers are located, turn off the travel motor 33;

[0054] S2: Start the lifting motor 32, which lifts the top device 14 through the screw mechanism and the connecting rod device. When the trolley track 18 on the top device 14 is aligned with the trolley guide rail 3 on the support frame 2 where the target roll is located, turn off the lifting motor 32. At this time, the screw mechanism can stabilize the height of the top device 14 by self-locking.

[0055] S3: Start and shorten the lifting hydraulic cylinder 22, and lift the stretching hydraulic cylinder 19;

[0056] S4: Start and extend the stretching hydraulic cylinder 19, and when the hook head 21 is located above the hook 11, close the stretching hydraulic cylinder 19;

[0057] S5: Extend the lifting hydraulic cylinder 22, lower the stretching hydraulic cylinder 19, and when the hook head 21 contacts the hook 11, close the lifting hydraulic cylinder 22;

[0058] S6: Start and shorten the stretching hydraulic cylinder 19, and when the roller transport trolley 4 is transferred from the support frame 2 to the lifting trolley 5, close the stretching hydraulic cylinder 19;

[0059] S7: Reverse and start the lifting motor 32, and when the top device 14 drops to the lowest position, turn off the lifting motor 32;

[0060] S8: Start the travel motor 33, and when the lifting trolley 5 is transferred to the roller hoisting station, turn off the travel motor 33;

[0061] S9: Stack the rollers on the support frame 2 and reverse the operations of S1-S8.

[0062] In addition, in some embodiments, the present invention can also add more auxiliary components to optimize the performance of the system. By adding an automated control system, a worker inputs the row and column coordinates of the target roll in the computer, and the roll transport trolley 4 can automatically move from the initial position to the target position, take out the target roll, and then move to the preset roll handover position.

[0063] In some embodiments, the trolley guide rail 3 can be designed to be inclined toward the support frame 2 at a certain angle, so that the roller transport trolley 4 is locked in the support frame 2 by gravity, eliminating the locking device of the roller transport trolley 4.

[0064] In some embodiments, more functions can be realized by laying the ground track 6 reasonably. For example, the hoisting space of the crane is limited, and the position under the plant column cannot be well utilized. However, the present invention uses space more flexibly and makes better use of fragmented space. In addition, the ground track 6 is laid in multiple spans, and the lifting trolley 5 can largely replace the cross-span trolley to complete the cross-span transportation of the rollers.

[0065] In summary, the present invention proposes a roll stacking and transportation device that can improve space utilization, which can replace the traditional roll stacking rack. Compared with the traditional roll stacking rack, the present invention reduces the horizontal area between the rolls by increasing the space utilization in the height direction of the plant; the roll transportation device is driven by a motor and a hydraulic cylinder, and no manual assistance is required throughout the process; the present invention can complete the precise picking of the target roll in a single time, reduce the repetitive work during roll transportation, and reduce the time required for roll scheduling; the present invention can be driven by a motor and a hydraulic cylinder throughout the process, reducing the work intensity of workers.

[0066] In the description of the present invention, it is to be understood that the terms “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0071] In the description of this specification, the description with reference to the terms "embodiment one", "embodiment two", "example", "specific example", or "some examples" means that the specific method, device or feature described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, methods, devices or features described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller stacking and transporting device, characterized in that: The invention comprises a bottom plate (1), a support frame (2), a trolley guide rail (3), a roller transport trolley (4), a lifting trolley (5) and a ground track (6); a support frame (2) made of welded parts is arranged above the bottom plate (1); the support frame (2) is divided into multiple layers, each layer is composed of multiple grids, and two sections of trolley guide rails (3) are laid in each grid for placing the roller transport trolley (4); two sections of ground track (6) are arranged on the ground, the lifting trolley (5) is slidably arranged on the ground track (6), and a roller transport trolley (4) is arranged on the top of the lifting trolley (5).

2. A roller stacking and transporting device according to claim 1, characterized in that: The trolley guide rail (3) is a crane steel rail, which is fixed on the support frame (2), compressed by a plurality of pressure blocks and fixed on the support frame (2) by bolts.

3. A roller stacking and transporting device according to claim 2, characterized in that: The roller transport trolley (4) comprises a body (7), a wedge-shaped pad (8), a stopper (9), a guide wheel (10) and a hook (11); the stopper (9) is welded to the body (7), two groups of symmetrical wooden wedge-shaped pads (8) are fixed in a set space by the stopper (9), the guide wheel (10) is fixed under the body (7) by threaded connection, and the side edge of the body (7) is provided with a hook (11).

4. A roller stacking and transporting device according to claim 3, characterized in that: The lifting trolley (5) comprises a base (12), wheels (13), a top device (14), a top lifting mechanism (15) and a walking mechanism (16); the wheels (13) of the lifting trolley (5) are installed below the base (12), the wheels (13) are in the form of a gear structure, the top lifting mechanism (15) is arranged above the base (12), and the top of the top lifting mechanism (15) is connected to the top device (14).

5. A roller stacking and transporting device according to claim 4, characterized in that: The ground guide rail (6) is a rack mechanism, the ground guide rail (6) is fixed on the foundation, a pad is provided under the ground guide rail (6) and is pressed by a plurality of pressing blocks and fixed to the foundation by bolts, and the ground guide rail (6) is meshed with the wheel (13).

6. A roller stacking and transporting device according to claim 5, characterized in that: The top device (14) comprises a top support plate (17), a trolley track (18), a stretching hydraulic cylinder (19), a stretching hydraulic cylinder seat (20), a hook head (21), a lifting hydraulic cylinder (22), a lifting hydraulic cylinder seat (23), a guide rail (24) and a limit block (25); the trolley track (18) is laid above the top support plate (17), and the specifications of the trolley track (18) are the same as those of the trolley guide rail (3), so as to ensure that the roller transport trolley (4) can pass smoothly on the two tracks; the stretching hydraulic cylinder (19) is the main action unit for driving the roller transport trolley (4); the stretching hydraulic cylinder (19) is fixed to the stretching hydraulic cylinder seat (20 ), the front of the stretching hydraulic cylinder (19) has a hook head (21) structure, the hook head (21) is used to interact with the hook (11) to pull out the roller transport trolley (4); the lifting hydraulic cylinder (22) is fixed on the lifting hydraulic cylinder seat (23), and the lifting hydraulic cylinder seat (23) is fixed on the top support plate (17); the lifting hydraulic cylinder (22) lifts the stretching hydraulic cylinder (19) through action, the guide rail (24) is fixed on the lifting hydraulic cylinder seat (23), and the limit block (25) is fixed on the top support plate (17), and the guide rail (24) and the limit block (25) are used to limit the moving direction and movement of the stretching hydraulic cylinder seat (20).

7. A roller stacking and transporting device according to claim 6, characterized in that: The top lifting mechanism (15) comprises a hinge connecting rod (26), a long connecting rod (27), a lead screw (28), a lead screw nut (29), a lead screw guide rod (30), a bracket (31) and a lifting motor (32); the lower end of the hinge connecting rod (26) is connected to the long connecting rod (27), the long connecting rod (27) is connected to the lead screw nut (29), the lead screw nut (29) is connected to the lead screw (28) to convert the rotational motion into the linear motion, the lead screw guide rod (30) can reduce the shear force of the lead screw (28), the lead screw (28) is connected to the lifting motor (32), thereby the lifting motor (32) can drive the top device (14) to move up and down by rotating; the bracket (31) is used to fix the lead screw guide rod (30) and the lead screw (28).

8. A roller stacking and transporting device according to claim 7, characterized in that: The walking mechanism (16) comprises a walking motor (33), a reducer (34) and a transmission shaft (35); the walking motor (33) is drivingly connected to the reducer (34), and the output shaft of the reducer (34) is equipped with the transmission shaft (35); and both ends of the transmission shaft (35) are respectively connected to a wheel (13).

9. A roller stacking and transporting device according to claim 8, characterized in that: There are four wheels (13), two of which are active wheels and two are passive wheels.

10. A method for using a roll stacking and transporting device, according to any one of claims 8 to 9, characterized in that: The steps include: S1: Start the travel motor (33), and when the lifting trolley (5) is aligned with the row where the target rollers are located, turn off the travel motor (33); S2: starting the lifting motor (32), the lifting motor (32) lifts the top device (14) through the screw mechanism and the connecting rod device, when the trolley track (18) on the top device (14) is aligned with the trolley guide rail (3) on the support frame (2) where the target rolling roller is located, the lifting motor (32) is turned off, at this time, the screw mechanism can stabilize the height of the top device (14) by self-locking; S3: Start and shorten the lifting hydraulic cylinder (22) and lift the stretching hydraulic cylinder (19); S4: starting and extending the stretching hydraulic cylinder (19), and when the hook head (21) is located above the hook (11), closing the stretching hydraulic cylinder (19); S5: Extend the lifting hydraulic cylinder (22), lower the stretching hydraulic cylinder (19), and when the hook head (21) contacts the hook (11), close the lifting hydraulic cylinder (22); S6: Start and shorten the stretching hydraulic cylinder (19), and when the roller transport trolley (4) is transferred from the support frame (2) to the lifting trolley (5), close the stretching hydraulic cylinder (19); S7: Reversely start the lifting motor (32), and when the top device (14) drops to the lowest position, turn off the lifting motor (32); S8: starting the travel motor (33), and when the lifting trolley (5) is transferred to the roller hoisting station, turning off the travel motor (33); S9: Stack the rollers onto the support frame (2) and reverse the operations of S1-S8.

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