Stacker fall protection mechanism

Abstract

The present invention relates to the technical field of protective devices for stackers, and in particular to a fall protection mechanism for stackers, comprising a base plate, a stand, a top plate, a cargo platform, a driving mechanism, a guiding mechanism, a guide mechanism and a wire rope; the present invention locks the thickened rope body inside the U-shaped hole through a U-shaped hole provided in the cargo platform, and the wire rope and the thickened rope body move up and down synchronously, and since the diameter of the gap of the gap hole is smaller than the diameter of the thickened rope body, the thickened rope body located in the carrier plate is in a relaxed state, so that the thickened rope body does not bear the weight of the cargo platform, and the thickened rope body will not bear the tension and compression brought by the cargo platform with high strength, so the protection of the wire rope is also improved, making the wire rope less likely to crack or break, and at the same time, by designing the cargo platform as a detachable cargo platform composed of a first plywood, a second plywood and a carrier plate, it is convenient to replace the wire rope inside it in the later stage, and it is convenient to regularly inspect and maintain the wire rope or the cargo platform, and it has good practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of stacker protection devices, in particular to a stacker fall protection mechanism. Background Art

[0002] Warehousing logistics involves the storage, safekeeping, loading, unloading, and distribution of goods in self-built or leased warehouses and facilities. Logistics handling generally requires a stacker crane for point-to-point cargo transportation. A stacker crane is a specialized crane that uses a fork or skewer as a pickup mechanism to grab, transport, and stack unit loads in warehouses and workshops, or to remove and place unit loads from high-rise shelves. The use of a stacker crane reduces labor intensity and warehouse management costs.

[0003] At present, existing stackers generally use wire rope drums for lifting. When in use, the wire rope is in a taut and straightened state for a long time, and will experience repeated stretching and compression. Long-term use will cause metal fatigue, and the wire rope will easily crack or even break, causing the loading platform to overspeed or even fall when the stacker is lifting. Therefore, a stacker anti-fall mechanism is needed to protect the lifted cargo platform from falling, so as to avoid damage caused by the cargo platform falling or falling rapidly.

[0004] Based on this, the present invention designs a stacker fall protection mechanism to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a stacker fall protection mechanism.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fall protection mechanism for a stacker comprises a bottom plate, a vertical frame, a top plate, a cargo platform, a driving mechanism, a guide mechanism, a guiding mechanism and a steel wire rope, the upper end of the bottom plate is symmetrically fixedly connected to the two vertical frames, the inner side walls of the two vertical frames are provided with slide grooves, a cargo platform is slidably arranged between the two vertical frames, the top ends of the two vertical frames are fixedly connected to the top plate, the top plate is symmetrically provided with through grooves, the through grooves are movably connected with through grooves, the through grooves are connected to the slide grooves, the outer sides of the two vertical frames are fixedly connected to the driving mechanism, the left and right sides of the top plate are fixedly connected to the guide mechanism, three steel wire ropes are connected to the driving mechanism, and the other ends of the three steel wire ropes pass through the guide mechanism, pass through the through groove, and then pass through the cargo platform, and then go out from the through groove and guide mechanism on the other side to be connected to the driving mechanism on the other side.

[0007] As a preferred technical solution of the present invention, the cargo platform includes a first plywood, a second plywood, a carrier plate and hexagon socket screws. The first plywood and the second plywood are fixedly connected by multiple hexagon socket screws. The carrier plate is movably connected to the carrier plate. Three U-shaped holes are opened in the first plywood. Positioning columns are provided at the four corners of the upper end of the first plywood. First sliders are provided on the left and right sides of the first plywood.

[0008] As a preferred technical solution of the present invention, connecting grooves are symmetrically provided on the upper end of the second plywood, second sliders are provided on the left and right sides of the second plywood, three gap holes are provided on the second sliders, and positioning grooves are provided at the four corners of the lower end of the second plywood.

[0009] As a preferred technical solution of the present invention, a connecting block is symmetrically provided at the lower end of the carrier plate, and the connecting block is movably engaged in the connecting groove.

[0010] As a preferred technical solution of the present invention, the positioning column on the upper end of the first plywood is engaged with the positioning groove at the lower end of the second plywood, and the three U-shaped holes opened in the first plywood are respectively connected to the three gap holes opened on the second sliders on the left and right sides of the second plywood.

[0011] As a preferred technical solution of the present invention, the steel wire rope is provided with a thickened rope body, the thickened rope body is arranged in the U-shaped hole and the diameter of the thickened rope body is larger than the diameter of the gap hole.

[0012] As a preferred technical solution of the present invention, the driving mechanism includes a motor, a rotating shaft, an axle seat, a fixed frame and a reel. The output end of the motor is fixedly connected to the rotating shaft through a reducer. The other end of the rotating shaft is movably installed in the axle seat. Three reels are provided on the rotating shaft. Steel ropes are respectively connected to the three reels. The lower end of the motor is fixedly installed on the fixed frame. The fixed frame and the axle seat are both fixedly connected to the vertical frame.

[0013] As a preferred technical solution of the present invention, the guide mechanism includes an axle frame, a fixed shaft and a guide wheel. The axle frame is fixedly connected to the top plate. A fixed shaft is movably connected between the axle frames. Three guide wheels are provided on the fixed shaft, and the wire rope passes around the guide wheel.

[0014] As a preferred technical solution of the present invention, the guiding mechanism includes a rotating rod, a roller and a bearing. The bearings are fixedly connected to both ends of the through slot. A rotating rod is movably installed between the two bearings, and a roller is provided on the rotating rod.

[0015] As a preferred technical solution of the present invention, three groups of limit plates are fixedly connected to the outer side of the stand, and the three steel ropes pass through the three limit plates respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the present invention is in use, two motors are started simultaneously to drive the rotating shafts, and the rotation of the rotating shaft drives the reel to rotate. The direction of the motor is changed by the guide mechanism to tighten or loosen the wire rope. Under the action of the guide wheel, the wire rope enables the cargo platform to move up and down normally, and the wire ropes are located at the center of the two ends of the cargo platform to ensure that the tension on both sides of the cargo platform is balanced. The thickened rope body is locked inside the U-shaped hole provided in the cargo platform. Therefore, the wire rope and the thickened rope body move up and down synchronously. Since the diameter of the gap of the gap hole is smaller than the diameter of the thickened rope body, the thickened rope body located in the carrier plate is in a relaxed state, so that the thickened rope body does not bear the weight of the cargo platform. Therefore, the thickened rope body is usually in a placed state, and the thickened rope body will not bear the tension and compression brought by the cargo platform with high strength, so the protection of the wire rope is also improved, and the wire rope is not easy to crack or break.

[0018] 2. When the present invention is in use, the cargo platform is designed to be a detachable cargo platform consisting of a first plywood, a second plywood and a carrier plate. The detachable design of the first plywood and the second plywood facilitates the replacement of the steel wire rope inside after a certain period of use. It also facilitates regular inspection and maintenance of the steel wire rope or the cargo platform, and has good practicality. The guiding mechanism provided in the through groove can guide and limit the steel wire rope passing through the through groove, while avoiding sliding and friction with the through groove, thereby ensuring smooth lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall front view structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall rear view structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall side structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall top view of the structure of the present invention;

[0024] Figure 5 It is a schematic cross-sectional structural diagram of the stand of the present invention;

[0025] Figure 6 It is a partial enlarged structural schematic diagram of the present invention;

[0026] Figure 7 This is a schematic diagram of the overall structure of the cargo platform of the present invention;

[0027] Figure 8 This is a schematic diagram of the unfolded structure of the cargo platform of the present invention;

[0028] Figure 9 This is a bottom view of the second plywood structure of the present invention.

[0029] In the figure: 1. bottom plate; 2. vertical frame; 201. slide groove; 202. limit plate; 3. top plate; 301. through groove; 4. cargo platform; 401. first joint plate; 4011. U-shaped hole; 4012. positioning column; 4013. first slider; 402. second joint plate; 4021. connecting groove; 4022. second slider; 4023. clearance hole; 4024. positioning groove; 403. carrier plate; 4031. connecting block; 404. hexagon socket screw; 5. driving mechanism; 501. motor; 502. rotating shaft; 503. shaft seat; 504. fixing frame; 505. reel; 6. guiding mechanism; 601. shaft frame; 602. fixed shaft; 603. guide wheel; 7. guiding mechanism; 701. rotating rod; 702. roller; 703. bearing; 8. wire rope; 801. thickened rope body. DETAILED DESCRIPTION

[0030] The following is a combination of the embodiments of the present invention Figure 1-9 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] Example

[0032] See also Figure 1-9 The present invention provides the following technical solutions: a stacker fall protection mechanism includes a bottom plate 1, a vertical frame 2, a top plate 3, a cargo platform 4, a driving mechanism 5, a guide mechanism 6, a guide mechanism 7 and a wire rope 8. The upper end of the bottom plate 1 is symmetrically fixedly connected to the two vertical frames 2, and a slide groove 201 is provided on the inner side walls of the two vertical frames 2. A cargo platform 4 is slidably arranged between the two vertical frames 2. The top ends of the two vertical frames 2 are fixedly connected to the top plate 3, and a through groove 301 is symmetrically provided on the top plate 3. The through groove 301 is movably connected with the through groove 301, and the through groove 301 is connected to the slide groove 201. The outer sides of the two vertical frames 2 are fixedly connected to the driving mechanism 5, and the left and right sides of the top plate 3 are fixedly connected to the guide mechanism 6. Three wire ropes 8 are connected to the driving mechanism 5, and the other ends of the three wire ropes 8 pass through the through groove 301 from the guide mechanism 6, and then pass through the through groove 301 from the cargo platform 4, and then pass through the through groove 301 on the other side and the guide mechanism 6 to be connected to the driving mechanism 5 on the other side.

[0033] The cargo platform 4 includes a first plywood 401, a second plywood 402, a carrier plate 403 and hexagon socket screws 404. The first plywood 401 and the second plywood 402 are fixedly connected by multiple hexagon socket screws 404, and the carrier plate 403 is movably connected to the carrier plate 403. Three U-shaped holes 4011 are opened in the first plywood 401, and positioning columns 4012 are provided at the four corners of the upper end of the first plywood 401. First sliders 4013 are provided on the left and right sides of the first plywood 401.

[0034] The second plywood 402 has symmetrical connection grooves 4021 on its upper end, second sliders 4022 on its left and right sides, three clearance holes 4023 on the second sliders 4022 , and positioning grooves 4024 at the four corners of its lower end.

[0035] A connecting block 4031 is symmetrically provided at the lower end of the carrier plate 403 , and the connecting block 4031 is movably engaged in the connecting groove 4021 .

[0036] The positioning column 4012 at the upper end of the first plywood 401 is engaged with the positioning groove 4024 at the lower end of the second plywood 402, and the three U-shaped holes 4011 opened in the first plywood 401 are respectively connected to the three gap holes 4023 opened on the second sliders 4022 on the left and right sides of the second plywood 402.

[0037] The steel wire rope 8 is provided with an enlarged rope body 801 . The enlarged rope body 801 is arranged in the U-shaped hole 4011 and the diameter of the enlarged rope body 801 is larger than the diameter of the gap hole 4023 .

[0038] Through the above-mentioned connection design between the wire rope 8 and the cargo platform 4, the thickened rope body 801 is stuck in the U-shaped hole 4011, which can prevent the wire rope 8 from undergoing repeated stretching or compression, thereby preventing the wire rope 8 from cracking or breaking, thereby achieving the purpose of preventing the cargo platform 4 from falling.

[0039] By designing the cargo platform 4 as a detachable structure consisting of a first plywood 401, a second plywood 402 and a carrier plate 403, it is convenient to inspect, repair or replace the wire rope 8 or the cargo platform 4 at a later time, thereby ensuring safety during use.

[0040] The driving mechanism 5 includes a motor 501, a rotating shaft 502, a shaft seat 503, a fixed frame 504 and a reel 505. The output end of the motor 501 is fixedly connected to the rotating shaft 502 through a reducer. The other end of the rotating shaft 502 is movably installed in the shaft seat 503. Three reels 505 are provided on the rotating shaft 502. The three reels 505 are respectively connected to steel ropes 8. The lower end of the motor 501 is fixedly installed on the fixed frame 504. The fixed frame 504 and the shaft seat 503 are both fixedly connected to the vertical frame 2.

[0041] The motor 501 is a self-locking motor, and the driving mechanism 5 provided on the outside of the two uprights 2 can realize the simultaneous winding or loosening of the two ends of the three steel ropes 8, thereby realizing the lifting function of the cargo platform 4.

[0042] The guide mechanism 6 includes an axle frame 601, a fixed shaft 602 and a guide wheel 603. The axle frame 601 is fixedly connected to the top plate 3. The fixed shaft 602 is movably connected between the axle frames 601. Three guide wheels 603 are provided on the fixed shaft 602. The wire rope 8 passes around the guide wheels 603.

[0043] The guiding mechanism 7 includes a rotating rod 701 , a roller 702 and a bearing 703 . The bearings 703 are fixedly connected to both ends of the through slot 301 . The rotating rod 701 is movably mounted between the two bearings 703 , and the roller 702 is provided on the rotating rod 701 .

[0044] Three sets of limit plates 202 are fixedly connected to the outer side of the stand 2, and the three steel ropes 8 pass through the three limit plates 202 respectively.

[0045] The guiding mechanism 7 provided in the through slot 301 can guide and limit the steel wire rope 8 passing through the through slot 301, so that the steel wire rope 8 and the cargo platform 4 can maintain a vertical state. At the same time, it can reduce friction and make the lifting and lowering of the cargo platform 4 smoother.

[0046] The working principle and use process of the present invention are as follows: when in use, two driving mechanisms 5 are started at the same time, and the torque is increased through the reducer to drive the rotating shaft 502, and the rotating shaft 502 drives the reel 505 to rotate, and the wire rope 8 is tightened or loosened by the rotation of the reel 505. Under the guidance of the guide mechanism 6 and the guide mechanism 7, the wire rope 8 enables the cargo platform 4 to move up and down normally, and the wire rope 8 is located at the center of the two ends of the side of the cargo platform 4, which can ensure that the tension on both sides of the cargo platform 4 is balanced, and the U-shaped hole 4011 in the cargo platform 4 and the second plywood 402 will thicken the wire rope 8. The rope body 801 is locked in the U-shaped hole 4011, so the wire rope 8 and the thickened rope body 801 move up and down synchronously, and the gap hole 4023 between 802 and the top of the U-shaped hole 4011 is utilized. The diameter of the gap hole 4023 is smaller than the diameter of the thickened rope body 801, so that the thickened rope body 801 does not bear the weight of the cargo platform 4, and the wire rope 8 located in the U-shaped hole 4011 is in a relaxed state. Therefore, the thickened rope body 801 is usually in a placed state, and the thickened rope body 801 will not bear the tension and compression brought by the cargo platform 4 with high strength, so the wire rope 8 is not easy to crack or break, thereby achieving the purpose of fall protection.

[0047] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A stacker fall protection mechanism, comprising a bottom plate (1), a stand (2), a top plate (3), a cargo platform (4), a driving mechanism (5), a guide mechanism (6), a guiding mechanism (7) and a steel wire rope (8), characterized in that: The upper end of the bottom plate (1) is symmetrically fixedly connected to two upright frames (2), the inner side walls of the two upright frames (2) are provided with a slide groove (201), a cargo platform (4) is slidably arranged between the two upright frames (2), the top ends of the two upright frames (2) are fixedly connected to a top plate (3), the top plate (3) is symmetrically provided with a through groove (301), the through groove (301) is movably connected to the through groove (301), and the through groove (301) and the slide groove (201) are movably connected. The two uprights (2) are connected to each other, and the outer sides of the two uprights (2) are fixedly connected to a driving mechanism (5). The left and right sides of the top plate (3) are fixedly connected to a guide mechanism (6). Three steel wire ropes (8) are connected to the driving mechanism (5). The other ends of the three steel wire ropes (8) pass through the through slot (301) from the guide mechanism (6), and then pass through the cargo platform (4), and then pass through the through slot (301) on the other side and the guide mechanism (6) to be connected to the driving mechanism (5) on the other side.

2. The stacker crane fall protection mechanism according to claim 1, characterized in that: The cargo platform (4) includes a first plywood (401), a second plywood (402), a carrier plate (403) and hexagon socket screws (404). The first plywood (401) and the second plywood (402) are fixedly connected by a plurality of hexagon socket screws (404). The carrier plate (403) is movably connected to the carrier plate (403). Three U-shaped holes (4011) are provided in the first plywood (401). Positioning columns (4012) are provided at the four corners of the upper end of the first plywood (401). First sliders (4013) are provided on the left and right sides of the first plywood (401).

3. The stacker crane fall protection mechanism according to claim 2, characterized in that: The upper end of the second plywood (402) is symmetrically provided with connecting grooves (4021), the left and right sides of the second plywood (402) are provided with second sliders (4022), the second sliders (4022) are provided with three gap holes (4023), and the four corners of the lower end of the second plywood (402) are provided with positioning grooves (4024).

4. The stacker crane fall protection mechanism according to claim 2, characterized in that: A connecting block (4031) is symmetrically provided at the lower end of the carrier plate (403), and the connecting block (4031) is movably engaged in the connecting groove (4021).

5. The stacker crane fall protection mechanism according to claim 2, characterized in that: The positioning column (4012) at the upper end of the first plywood (401) is engaged with the positioning groove (4024) at the lower end of the second plywood (402), and the three U-shaped holes (4011) provided in the first plywood (401) are respectively connected to the three gap holes (4023) provided on the second sliders (4022) on the left and right sides of the second plywood (402).

6. The stacker crane fall protection mechanism according to claim 1, characterized in that: The steel wire rope (8) is provided with a thickened rope body (801), which is arranged in the U-shaped hole (4011) and has a diameter greater than a diameter of the gap hole (4023).

7. The stacker crane fall protection mechanism according to claim 1, characterized in that: The driving mechanism (5) comprises a motor (501), a rotating shaft (502), an axle seat (503), a fixed frame (504) and a reel (505). The output end of the motor (501) is fixedly connected to the rotating shaft (502) via a speed reducer. The other end of the rotating shaft (502) is movably mounted in the axle seat (503). Three reels (505) are provided on the rotating shaft (502). Steel wire ropes (8) are respectively connected to the three reels (505). The lower end of the motor (501) is fixedly mounted on the fixed frame (504). The fixed frame (504) and the axle seat (503) are both fixedly connected to the stand (2).

8. The stacker crane fall protection mechanism according to claim 1, characterized in that: The guide mechanism (6) comprises a shaft frame (601), a fixed shaft (602) and guide wheels (603); the shaft frame (601) is fixedly connected to the top plate (3); a fixed shaft (602) is movably connected between the shaft frame (601); three guide wheels (603) are provided on the fixed shaft (602); and the steel wire rope (8) passes around the guide wheels (603).

9. The stacker crane fall protection mechanism according to claim 1, characterized in that: The guide mechanism (7) comprises a rotating rod (701), a roller (702) and a bearing (703). The bearing (703) is fixedly connected to the two ends inside the through groove (301). The rotating rod (701) is movably installed between the two bearings (703). The roller (702) is provided on the rotating rod (701).

10. The stacker crane fall protection mechanism according to claim 1, characterized in that: Three groups of limiting plates (202) are fixedly connected to the outer sides of the stand (2), and the three steel wire ropes (8) pass through the three limiting plates (202) respectively.

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