Lifting device and stacking machine

Abstract

The utility model relates to the technical field of storage and transportation, in particular to a lifting device and a stacker, the lifting device comprises a rack, a goods carrying frame, a driving unit, a rope seat, a lifting wheel set and a guide wheel unit, the goods carrying frame slides along the height direction of the rack to realize lifting of goods, the driving unit and the rope seat are both fixed on the rack, and the lifting wheel set is fixed on the rack. The guide wheel unit can be used for being connected with the two ends of a rope respectively, the lifting wheel set is rotationally connected to the cargo carrying frame and can be used for winding the rope, and the driving unit can drive the cargo carrying frame to ascend and descend by pulling the rope; the first rope groove and the second rope groove which are spaced are formed in the circumferential direction of the lifting wheel set, and the guide wheel unit can guide the rope to drive the cargo carrying frame to ascend and descend; the rope can be wound around the first rope groove and the second rope groove in sequence, so that the number of sections of the rope on the lifting wheel set can be increased, the lifting device can lift large-mass goods, and the stacker crane can transport large-mass goods.

Description

Technical Field

[0001] The utility model relates to the technical field of warehousing transportation, in particular to a lifting device and a stacker crane. Background Technique

[0002] Warehouse logistics utilizes self-built or leased warehouses, sites for storing, preserving, loading, unloading, handling, and distributing goods. Due to the limitation of the usable space, a stacker crane is usually used to place materials on a stereoscopic warehouse. The stacker crane evolved from a forklift and a bridge stacker crane. Its main purpose is to shuttle back and forth in the aisles of high-rise shelves, store the goods at the aisle entrance into the storage cells, or take out the goods in the storage cells and transport them to the aisle entrance.

[0003] For example, the stacker crane disclosed in the patent document with the publication number CN112027471A includes a column, a cross beam, a base, a load-carrying platform, and a lifting device. The lifting device drives the load-carrying platform to lift through a lifting motor. By arranging a plurality of fork mechanisms on the load-carrying platform of the stacker crane, when the lifting device drives the load-carrying platform to lift, multiple goods can be stacked simultaneously, greatly improving the stacking efficiency of the goods and meeting the production requirements.

[0004] Although the existing stacker crane can lift the load-carrying platform through the drive of the motor, due to the limitation of the maximum power of the motor, it is difficult for the load-carrying platform of the stacker crane to adapt to the lifting of large-quality goods. During the transportation of large-quality goods, it will be necessary to replace a generator with a larger power for lifting drive at that time, resulting in an increase in the transportation cost of the goods. Summary of the Utility Model

[0005] In view of this, it is necessary to provide a lifting device and a stacker crane to solve the technical problem that the existing stacker crane is difficult to adapt to the transportation of large-quality goods.

[0006] To achieve the above technical purpose, the technical solution of the utility model provides a lifting device, including:

[0007] A frame;

[0008] A load-carrying shelf, slidably connected to the frame along the height direction of the frame;

[0009] A driving unit, installed on the frame, for connecting one end of a rope and pulling the rope;

[0010] A rope seat, fixed to the frame, for fixedly connecting the other end of the rope; and

[0011] A lifting wheel set, rotatably connected to the load-carrying shelf, and a first rope groove and a second rope groove are arranged at intervals in the circumferential direction of the lifting wheel set;

[0012] The guide wheel unit is rotatably connected to the frame and is used to guide the rope to sequentially wind around the first rope groove and the second rope groove.

[0013] In some embodiments, the lifting wheel set includes a first lifting wheel. The guide wheel unit includes a first guide wheel group and a second guide wheel group. The first guide wheel group is located on one side of the first lifting wheel and is used to guide the rope to the first rope groove of the first lifting wheel. The second guide wheel group is located on the other side of the first lifting wheel and is used to wind around the first rope groove of the first lifting wheel that has been bypassed and guide the rope to the second rope groove of the first lifting wheel.

[0014] In some embodiments, the first guide wheel group includes a plurality of first guide wheels. Each of the first guide wheels is arranged at intervals along the length direction of the frame and is rotatably connected to one side of the frame. The edge of the first guide wheel close to the first lifting wheel is flush with one side of the first rope groove of the first lifting wheel in the vertical direction.

[0015] In some embodiments, the second guide wheel group includes a second guide wheel and a third guide wheel. The second guide wheel and the third guide wheel are arranged at intervals along the height direction of the frame and are rotatably connected to the other side of the frame. The edge of the second guide wheel is flush with the other side of the first rope groove of the first lifting wheel in the vertical direction. The edge of the third guide wheel is flush with one side of the second rope groove of the first lifting wheel.

[0016] In some embodiments, the lifting wheel set further includes a second lifting wheel. The second lifting wheel is opposite to the first lifting wheel. The guide wheel unit is further used to traction another rope to wind around the first rope groove and the second rope groove of the second lifting wheel.

[0017] In some embodiments, the guide wheel unit further includes a third guide wheel group and a fourth guide wheel group. The third guide wheel group is on the same side as the second guide wheel group and is used to guide another rope to the first rope groove of the second lifting wheel. The fourth guide wheel group is on the same side as the first guide wheel group and is used to wind around the first rope groove of the second lifting wheel that has been bypassed and guide the rope to the second rope groove of the second lifting wheel.

[0018] In some embodiments, the third guide wheel group includes a plurality of fourth guide wheels. Each of the fourth guide wheels is arranged at intervals along the length direction of the frame. The edge of the fourth guide wheel close to the second lifting wheel is flush with one side of the first rope groove of the second lifting wheel in the vertical direction.

[0019] In some embodiments, the second guide wheel set includes a fifth guide wheel and a sixth guide wheel. The fifth guide wheel and the sixth guide wheel are spaced apart along the height direction of the frame. The edge of the fifth guide wheel is flush with the other side of the first rope groove of the second lifting wheel in the vertical direction, and the edge of the sixth guide wheel is flush with one side of the second rope groove of the second lifting wheel.

[0020] In some embodiments, the lifting device further includes a retaining frame. The retaining frame is fixed to the frame and located above the guide wheel unit for limiting the rope.

[0021] To achieve the above technical objectives, the technical solution of the present utility model further provides a stacker, including the lifting device described above.

[0022] Compared with the prior art, the beneficial effects of the lifting device and the stacker of the present utility model include: The lifting device is provided with a frame, a load rack, a driving unit, a rope seat, a lifting wheel set and a guide wheel unit. The load rack is slidably connected to the frame along the height direction of the frame. The load rack can carry goods. By sliding along the height direction of the frame, the lifting and lowering of the goods can be realized. The driving unit and the rope seat are both fixed to the frame and can be respectively connected to both ends of the rope. The lifting wheel set is rotatably connected to the load rack and the rope can be wound around it. The driving unit drives the load rack to lift by pulling the rope. Since the first rope groove and the second rope groove are arranged at intervals in the circumferential direction of the lifting wheel set, the guide wheel unit can guide the rope so that the rope can be wound around the first rope groove and the second rope groove in sequence, thereby increasing the number of segments of the rope on the lifting wheel set. Under the same traction force of the rope, a double lifting force acting on the lifting wheel set can be generated, so that the lifting device can lift large-quality goods and enable the stacker to transport larger-quality goods. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the lifting device provided by an embodiment of the present utility model;

[0024] Figure 2 is Figure 1 a partial enlarged view of part A in

[0025] Figure 3 is Figure 1 a partial enlarged view of part B in

[0026] Figure 4 is Figure 1 a partial enlarged view of part C in

[0027] Figure 5 is Figure 1 a partial enlarged view of part D in

[0028] Figure 6It is another schematic structural diagram of the lifting device provided by the embodiment of the present utility model.

[0029] Among them, each reference numeral in the figure:

[0030] 10 - Frame 20 - Goods rack 30 - Driving unit

[0031] 31 - Motor base 32 - Biaxial motor 33 - Drum

[0032] 40 - Rope seat 50 - Lifting wheel set 51 - First rope groove

[0033] 52 - Second rope groove 53 - First lifting wheel 54 - Second lifting wheel

[0034] 60 - Guide wheel unit 61 - First guide wheel set 62 - Second guide wheel set

[0035] 63 - Third guide wheel set 64 - Fourth guide wheel set 70 - Baffle

[0036] 611 - First guide wheel 621 - Second guide wheel 622 - Third guide wheel

[0037] 631 - Fourth guide wheel 641 - Fifth guide wheel 642 - Sixth guide wheel. Specific embodiments

[0038] The following will specifically describe the preferred embodiments of the present utility model in conjunction with the accompanying drawings. Among them, the accompanying drawings form a part of this application and are used together with the embodiments of the present utility model to explain the principle of the present utility model, and are not used to limit the scope of the present utility model.

[0039] The embodiment of the present utility model provides a lifting device to increase the number of segments of the rope at the movable pulley of the loading platform, thereby increasing the traction force of the rope acting on the loading platform, and thus solving the technical problem that the stacker in the prior art is difficult to adapt to the transportation of large - mass goods.

[0040] The lifting device of this embodiment, as shown in Figure 1 and 4 -6, includes a frame 10, a goods rack 20, a driving unit 30, a rope seat 40, a lifting wheel set 50, and a guide wheel unit 60. The goods rack 20 is slidably connected to the frame 10 along the height direction of the frame 10; the driving unit 30 is installed on the frame 10 and is used to connect one end of the rope and traction the rope; the rope seat 40 is fixed to the frame 10 and is used to fixedly connect the other end of the rope; the lifting wheel set 50 is rotatably connected to the goods rack 20, and the circumferential direction of the lifting wheel set 50 is provided with spaced - apart first rope grooves 51 and second rope grooves 52; the guide wheel unit 60 is rotatably connected to the frame 10 and is located on both sides of the lifting wheel set 50, and is used to guide the rope to sequentially wind around the first rope groove 51 and the second rope groove 52.

[0041] Specifically, the lifting device is provided with a frame 10, a loading rack 20, a driving unit 30, a rope seat 40, a lifting wheel set 50 and a guiding wheel unit 60. The loading rack 20 is slidably connected to the frame 10 in the height direction of the frame 10. The loading rack 20 can carry goods. By sliding in the height direction of the frame 10, the loading rack 20 can realize the lifting of the goods. The driving unit 30 and the rope seat 40 are both fixed to the frame 10 and can be respectively connected to the two ends of the rope. The lifting wheel set 50 is rotatably connected to the loading rack 20 and the rope can be wound around it. The driving unit 30 drives the rope, so as to realize the driving of the lifting of the loading rack 20. Since the first rope groove 51 and the second rope groove 52 are arranged at intervals in the circumferential direction of the lifting wheel set 50, the guiding wheel unit 60 can guide the rope, so that the rope can be sequentially wound around the first rope groove 51 and the second rope groove 52, thereby increasing the number of rope segments on the lifting wheel set 50. When the rope is under the same traction force, it can generate a lifting force twice that acting on the lifting wheel set 50. Therefore, without using a high-power driving unit 30, the lifting device can lift large-mass goods, enabling the palletizer to transport goods of greater mass and reducing the transportation cost of the goods.

[0042] In this embodiment, the lifting device is mainly used on a palletizer. After the forklift of the palletizer picks up the goods, the lifting device drives the forklift to lift and lower to the stacking position, and then the goods are stacked on the stacking position through the forklift. The lifting device can also be used for any other equipment that needs to drive the goods to lift and lower. When it is applied to the lifting drive of other equipment, its principle is the same as that when it is applied to the palletizer.

[0043] In this embodiment, since the lifting wheel set 50 winds the rope twice through the first rope groove 51 and the second rope groove 52, the traction force it receives is twice that of winding the rope only once. Since the power of the driving unit 30 remains unchanged, the lifting speed of the loading rack 20 will be reduced to half of the original, so as to increase the traction force of the loading rack 20 while reducing the lifting speed of the loading rack 20, thus ensuring the safety of the staff and goods in the loading rack 20.

[0044] It can be understood that the frame 10 can be any frame structure that allows the loading rack 20 to lift and slide.

[0045] In this embodiment, as Figure 1 and 6 shown, the frame 10 is a gantry frame, and the loading rack 20 is located between the two columns of the frame 10 and is slidably connected to the two columns of the frame 10.

[0046] It can be understood that the load-carrying rack 20 can carry goods or people by itself, or be fixed for the forklift forks to carry goods through the forklift forks. The load-carrying rack 20 can be a platform structure capable of carrying goods or people, or any frame structure capable of fixing the forklift forks. The load-carrying rack 20 can be driven by a rope, or driven simultaneously at both ends of the load-carrying rack 20 by more than two ropes.

[0047] It can be understood that the driving unit 30 can be any driving device capable of pulling the rope, such as a hydraulic cylinder, a rotary cylinder, a motor, etc.

[0048] In one of the embodiments, as Figure 1 and 6 shown, the driving unit 30 includes a motor base 31, a double-shaft motor 32 and two drums 22. The motor base 31 is fixed to the frame 10, the double-shaft motor 32 is fixed to the electrode base, the two drums 22 are respectively connected to the two driving ends of the double-shaft motor 32, the two drums 22 are respectively wound by two different ropes, and the two ropes are respectively connected to both ends of the bearing frame. The double-shaft motor 32 drives the two drums 22, so that the two ropes synchronously drive both ends of the bearing frame.

[0049] In this embodiment, the rope seat 40 can be any fixing member for fixing the end of the rope. The rope seat 40 can be fixed to any part of the frame 10, and only needs to fix the rope that can bypass the second rope groove 52.

[0050] In one of the embodiments, as Figure 1 and 6 shown, the rope seat 40 is located above the edge of the second rope groove 52, so that the rope led out from the second rope groove 52 can extend in the vertical direction and connect to the god seat.

[0051] It can be understood that the lifting wheel set 50 can be a movable pulley to drive the load-carrying rack 20 through a rope, or a plurality of movable pulleys arranged at both ends of the load-carrying rack 20 to drive the load-carrying rack 20 simultaneously through more than two movable pulleys.

[0052] In one of the embodiments, as Figure 1-2 and shown in 6, the lifting wheel set 50 includes a first lifting wheel 53, the guiding wheel unit 60 includes a first guiding wheel group 61 and a second guiding wheel group 62. The first guiding wheel group 61 is located on one side of the first lifting wheel 53 and is used to guide the rope to the first rope groove 51 of the first lifting wheel 53. The second guiding wheel group 62 is located on the other side of the first lifting wheel 53 and is used for the rope that has bypassed the first rope groove 51 of the first lifting wheel 53 to be wound around and guided to the second rope groove 52 of the first lifting wheel 53.

[0053] Specifically, the first guide pulley group 61 can guide the rope led out from the driving unit 30 to the first rope groove 51 of the first lifting pulley 53. After the rope bypasses the first rope groove 51 of the first lifting pulley 53, it bypasses the second guide pulley group 62 and enters the second rope groove 52 of the first lifting pulley 53. After bypassing the second rope groove 52 of the first lifting pulley 53, it is connected to the rope seat 40 for fixation, so that the rope is sequentially wound around the first rope groove 51 and the second rope groove 52 of the first lifting pulley 53.

[0054] It can be understood that the first guide pulley group 61 and the second guide pulley group 62 can be fixed pulleys respectively located on both sides of the frame 10 and rotatably connected to the frame 10.

[0055] In one embodiment, to prevent the rope from touching other parts other than the first guide pulley when entering the first guide pulley group 61, such as Figure 1-2 As shown in FIGS. 5 and 6, the first guide pulley group 61 includes a plurality of first guide pulleys 611. The first guide pulleys 611 are arranged at intervals along the length direction of the frame 10 and rotatably connected to one side of the frame 10. The edge of the first guide pulley 611 close to the first lifting pulley 53 is flush with one side of the first rope groove 51 of the first lifting pulley 53 in the vertical direction.

[0056] Specifically, after the rope is led out from the driving unit 30, it will be wound around the first guide pulley 611 close to the driving unit 30, and then led out from the edge of the first guide pulley 611 close to the first lifting pulley 53, led out in the vertical direction and enter one side of the first rope groove 51 of the first lifting pulley 53. Since the rope entering the first lifting pulley 53 always remains vertical, the rope can be prevented from contacting the carrier and the frame 10.

[0057] In one embodiment, to prevent the rope from touching other parts during the guiding process through the second guide pulley group 62, such as Figure 1-2 As shown in FIGS. 5 and 6, the second guide pulley group 62 includes a second guide pulley 621 and a third guide pulley 622. The second guide pulley 621 and the third guide pulley 622 are arranged at intervals along the height direction of the frame 10 and rotatably connected to the other side of the frame 10. The edge of the second guide pulley 621 is flush with the other side of the first rope groove 51 of the first lifting pulley 53 in the vertical direction, and the edge of the third guide pulley 622 is flush with one side of the second rope groove 52 of the first lifting pulley 53.

[0058] Specifically, after the rope is led out in the vertical direction from the other side of the first rope groove 51 of the first lifting pulley 53, it will enter the third guide pulley 622 from the edge of the second guide pulley 621, and then after being led out in the vertical direction from the edge of the third guide pulley 622 close to the second rope groove 52 of the first lifting pulley 53, it enters the second rope groove 52 from one side of the second rope groove 52, and after bypassing the second rope groove 52, it is connected to the rope seat 40 in the vertical direction, thus preventing the rope from contacting the carrier and the frame 10.

[0059] In one embodiment, as Figure 1 and 5 shown in FIG. -6, the lifting wheel set 50 further includes a second lifting wheel 54. The second lifting wheel 54 is opposite to the first lifting wheel 53. The guide wheel unit 60 is further configured to tow another rope to wind around the first rope groove 51 and the second rope groove 52 of the second lifting wheel 54. Specifically, through the arrangement of the second lifting wheel 54, the lifting device can drive the load rack 20 at both ends of the load rack 20 through two ropes, thereby improving the stability of the lifting and lowering of the load rack 20.

[0060] In one embodiment, as Figure 1 and 6 shown, the guide wheel unit 60 further includes a third guide wheel set 63 and a fourth guide wheel set 64. The third guide wheel set 63 is on the same side as the second guide wheel set 62 and is configured to guide another rope to the first rope groove 51 of the second lifting wheel 54. The fourth guide wheel set 64 is on the same side as the first guide wheel set 61 and is configured to wind around the first rope groove 51 of the second lifting wheel 54 and guide the rope to the second rope groove 52 of the second lifting wheel 54.

[0061] Specifically, the third guide wheel set 63 can guide the rope led out from the drive unit 30 to the first rope groove 51 of the second lifting wheel 54. After the rope winds around the first rope groove 51 of the second lifting wheel 54, it then winds around the fourth guide wheel set 64 and enters the second rope groove 52 of the second lifting wheel 54. After winding around the second rope groove 52 of the second lifting wheel 54, it is connected to the rope seat 40 for fixation, so that the rope winds around the first rope groove 51 and the second rope groove 52 of the second lifting wheel 54 in sequence.

[0062] It can be understood that the third guide wheel set 63 and the fourth guide wheel set 64 can be fixed pulleys respectively located on both sides of the frame 10 and rotatably connected to the frame 10.

[0063] In one embodiment, as Figure 1-3 shown in FIG. 6, the third guide wheel set 63 includes a plurality of fourth guide wheels 631. The fourth guide wheels 631 are arranged at intervals along the length direction of the frame 10. The edge of the fourth guide wheel 631 close to the second lifting wheel 54 is flush with one side of the first rope groove 51 of the second lifting wheel 54 in the vertical direction.

[0064] Specifically, after the rope is led out from the drive unit 30, it will wind around the fourth guide wheel 631 close to the drive unit 30, and then lead out from the edge of the fourth guide wheel 631 close to the second lifting wheel 54, lead out in the vertical direction and enter one side of the first rope groove 51 of the second lifting wheel 54. Since the rope entering the second lifting wheel 54 always remains vertical, the rope can be prevented from contacting the carrier and the frame 10.

[0065] In one of the embodiments, as Figure 1 , 3 and as shown in 6, the second guide wheel set 62 includes a fifth guide wheel 641 and a sixth guide wheel 642. The fifth guide wheel 641 and the sixth guide wheel 642 are spaced apart along the height direction of the frame 10. The edge of the fifth guide wheel 641 is flush with the other side of the first rope groove 51 of the second lifting wheel 54 in the vertical direction, and the edge of the sixth guide wheel 642 is flush with one side of the second rope groove 52 of the second lifting wheel 54. Specifically, after the rope exits vertically from the other side of the first rope groove 51 of the second lifting wheel 54, it enters the sixth guide wheel 642 from the edge of the fifth guide wheel 641, and then after exiting vertically from the edge of the sixth guide wheel 642 close to the second rope groove 52 of the second lifting wheel 54, it enters the second rope groove 52 from one side of the second rope groove 52, and after bypassing the second rope groove 52, it is connected to the rope seat 40 in the vertical direction, thereby preventing the rope from contacting the carrier frame and the frame 10.

[0066] In this embodiment, the winding mode of the rope on the fifth guide wheel 641 and the sixth guide wheel 642 is the same as that on the second guide wheel 621 and the third guide wheel 622.

[0067] In some embodiments, as Figure 1-3 and as shown in 6, the lifting device further includes a retaining frame 70. The retaining frame 70 is fixed to the frame 10 and is located above the guide wheel unit 60 for limiting the rope. Specifically, by blocking the rope, the retaining frame 70 can reduce the vibration generated by the rope during the traction process, so that the rope can be kept stable.

[0068] The embodiment of the present utility model further provides a stacker, including the described lifting device. By providing this lifting device, the stacker can achieve the transportation of goods with a large mass.

[0069] In this embodiment, the stacker further includes a fork and a fence. Both the fork and the fence are fixed to the carrier shelf 20. The fork can be obtained by telescopic grasping. The fence encloses the carrier shelf 20, so that the carrier shelf 20 can be safely carried by the staff.

[0070] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An elevating device, characterized in that, Comprising: A frame; A loading rack, slidably connected to the frame along the height direction of the frame; A driving unit, installed on the frame, for connecting one end of a rope and pulling the rope; A rope seat, fixed to the frame, for fixedly connecting the other end of the rope; A lifting wheel set, rotatably connected to the loading rack, and a first rope groove and a second rope groove are arranged at intervals in the circumferential direction of the lifting wheel set; And A guide wheel unit, rotatably connected to the frame, for guiding the rope to sequentially wind around the first rope groove and the second rope groove.

2. The lifting device according to claim 1, characterized in that, The lifting wheel set includes a first lifting wheel, the guide wheel unit includes a first guide wheel group and a second guide wheel group, the first guide wheel group is located on one side of the first lifting wheel, for guiding the rope to the first rope groove of the first lifting wheel, the second guide wheel group is located on the other side of the first lifting wheel, for guiding the winding of the rope around the first rope groove of the first lifting wheel and guiding the rope to the second rope groove of the first lifting wheel.

3. The lifting device according to claim 2, wherein The first guide wheel group includes a plurality of first guide wheels, each of the first guide wheels is arranged at intervals along the length direction of the frame and rotatably connected to one side of the frame, and the edge of the first guide wheel close to the first lifting wheel is flush with one side of the first rope groove of the first lifting wheel in the vertical direction.

4. The lifting device according to claim 2, wherein, The second guide wheel group includes a second guide wheel and a third guide wheel, the second guide wheel and the third guide wheel are arranged at intervals along the height direction of the frame and rotatably connected to the other side of the frame, the edge of the second guide wheel is flush with the other side of the first rope groove of the first lifting wheel in the vertical direction, and the edge of the third guide wheel is flush with one side of the second rope groove of the first lifting wheel.

5. The lifting device according to claim 2, characterized in that, The lifting wheel set further includes a second lifting wheel, the second lifting wheel is opposite to the first lifting wheel, and the guide wheel unit is further used for pulling another rope to wind around the first rope groove and the second rope groove of the second lifting wheel.

6. The lifting device according to claim 5, wherein The guide wheel unit further includes a third guide wheel group and a fourth guide wheel group, the third guide wheel group is on the same side as the second guide wheel group, for guiding another rope to the first rope groove of the second lifting wheel, the fourth guide wheel group is on the same side as the first guide wheel group, for guiding the winding of the rope around the first rope groove of the second lifting wheel and guiding the rope to the second rope groove of the second lifting wheel.

7. The lifting device according to claim 6, characterized in that, The third guide wheel group includes a plurality of fourth guide wheels, each of the fourth guide wheels is arranged at intervals along the length direction of the frame, and the edge of the fourth guide wheel close to the second lifting wheel is flush with one side of the first rope groove of the second lifting wheel in the vertical direction.

8. The lifting device according to claim 6, characterized in that The second guide wheel group includes a fifth guide wheel and a sixth guide wheel, the fifth guide wheel and the sixth guide wheel are arranged at intervals along the height direction of the frame, the edge of the fifth guide wheel is flush with the other side of the first rope groove of the second lifting wheel in the vertical direction, and the edge of the sixth guide wheel is flush with one side of the second rope groove of the second lifting wheel.

9. The lifting device according to any one of claims 1-8, characterized in that, The lifting device further includes a retaining frame, the retaining frame is fixed to the frame and located above the guide wheel unit, for limiting the rope.

10. A stacker, characterized in that, Including the lifting device according to any one of claims 1 to 9.

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