Gantry type stacker

Abstract

This utility model belongs to the field of warehousing and transportation equipment, and relates to a gantry stacker crane, which can be used as a transportation device for transporting angle steel stacks. It includes a gantry frame, forks, and a gantry frame traveling mechanism. The gantry frame includes one column on each side and an upper crossbeam fixedly connected to the top of the two columns. The bottom ends of the two columns are mounted on the gantry frame traveling mechanism. The forks are mounted on the gantry frame and can move up and down along the columns. The forks are ribbed forks, each including a fork crossbeam. A fork connecting plate is fixedly connected to each of the left and right ends of the fork crossbeam. One side of the fork connecting plate is welded to the end of the fork crossbeam, and the other side is slidably connected to the column. Several ribs are evenly welded along the length of the fork crossbeam. This utility model's ribbed fork solves the problems of instability and easy tipping when handling slender materials. Multiple ribs evenly support the angle steel stack, better distributing the load and preventing angle steel deformation.

Description

Technical Field

[0001] This utility model belongs to the field of warehousing and transportation equipment technology, specifically relating to a gantry stacker crane, which can be used as a transportation equipment for transporting angle steel stacks. Background Technology

[0002] In the manufacturing and assembly of power transmission and transformation angle steel towers, the storage and management of raw material angle steel stacks has always relied on manual forklift handling and fixed rack storage. This method not only suffers from low space utilization, low operational efficiency, and high labor intensity, but also easily leads to problems such as mis-material handling, crushing, and mixing during the handling process, seriously affecting the continuity and intelligence level of downstream production lines.

[0003] The existing stacker cranes used for handling angle steel stacks mainly have the following technical problems:

[0004] 1. Traditional fork structure design is mainly designed for palletized materials. The forks are mostly standard double-tooth or slide rail type, which lack the capacity to accommodate slender workpieces and the reliability of gripping. In particular, when gripping angle steel stacks, they are prone to deviation or slippage, which can easily cause safety hazards during the gripping and releasing of angle steel. In addition, the support position of traditional forks is concentrated in the middle of slender workpieces, resulting in high single-point pressure and insufficient support at both ends of the workpiece, which makes the middle of the angle steel prone to bending and deformation.

[0005] 2. Traditional stacker cranes generally have a multi-column frame structure, with the forks suspended from the upper crossbeam 5 via a lifting mechanism. In scenarios with large spans and heavy loads, the stability of the fork movement is significantly insufficient. In particular, when used for long profiles such as angle steel, swaying and shaking are prone to occur, affecting the accurate storage and retrieval of angle steel. Summary of the Invention

[0006] To solve the above-mentioned technical problems, this utility model provides a gantry stacker crane. The technical solution adopted by this utility model is as follows:

[0007] A gantry stacker crane includes a gantry frame, forks, and a gantry frame traveling mechanism. The gantry frame includes one column on each side and an upper crossbeam fixedly connected to the top of the two columns. The bottom ends of the two columns are mounted on the gantry frame traveling mechanism. The forks are mounted on the gantry frame and can move up and down along the columns. The forks are ribbed forks, each including a fork beam. A fork connecting plate is fixedly connected to each of the left and right ends of the fork beam. The inner side of the fork connecting plate is welded to the end of the fork beam, and the outer side of the fork connecting plate is slidably connected to the column. Several evenly distributed ribs are welded along the length of the fork beam, and the height of the ribs is greater than the thickness of the support cantilever on the rack.

[0008] Preferably, a vertical composite roller bearing mounting plate is welded to each of the front and rear sides of the outer side of the fork connecting plate. A composite roller bearing is fixedly installed on the upper and lower parts of the inner side of each composite roller bearing mounting plate. The composite roller bearing is slidably connected to the composite roller bearing track groove on the front and rear sides of the column.

[0009] Preferably, multiple pairs of vertically arranged connecting elbows are fixedly installed on the outer side of the fork connecting plate between a pair of composite roller bearing mounting plates. The connecting elbows are L-shaped plates, and each pair of connecting elbows is fixedly connected to a section of transmission chain on both adjacent sides. The opposite sides of each pair of connecting elbows are fixedly installed on the outer side of the fork connecting plate by bolts.

[0010] Preferably, the upper crossbeam comprises two parallel square steel bars with a gap in the middle. Each column has a vertical composite roller bearing track groove on both its front and rear sides. A lifting drive motor is fixedly installed at the top center of the upper crossbeam. The output shaft of the lifting drive motor is fixedly connected to one end of the upper sprocket shaft on each side. Upper sprocket shaft seats are fixedly installed at both ends of the top of the upper crossbeam. The other end of the upper sprocket shaft is rotatably connected to the upper sprocket shaft seat. The other ends of the two upper sprocket shafts are fixedly installed... There are two upper sprockets, Upper Sprocket 1 and Upper Sprocket 2, located inside the upper sprocket shaft seat. The lower sprocket mechanism includes a lower sprocket, a lower sprocket shaft, and a lower sprocket shaft seat. The lower sprocket shaft seat is fixedly mounted on a column. The lower sprocket shaft is rotatably mounted in a lower sprocket shaft bearing on the lower sprocket shaft seat. The lower sprocket is fixedly mounted on the lower sprocket shaft. Upper Sprocket 1 and the lower sprocket located on the same side are rotatably connected by a drive chain. Upper Sprocket 2 and the lower sprocket located on the same side are rotatably connected by another drive chain.

[0011] Preferably, the gantry traveling mechanism includes four traveling wheel mechanisms and a pair of ground tracks. The pair of ground tracks are arranged parallel to each other on the ground. The four traveling wheel mechanisms are respectively arranged on the front and rear sides of the bottom of the column. The traveling wheel mechanisms are rolled in cooperation with the ground tracks. At least one of the four traveling wheel mechanisms is a driving wheel mechanism, and the others are driven wheel mechanisms. The driving wheel mechanism includes a motor and a driving wheel that are connected by transmission.

[0012] The beneficial effects of this utility model are:

[0013] The gantry stacker crane uses ribbed forks, which can lift slender materials such as angle steel evenly along the length direction. This effectively solves the problems of instability and easy tipping when traditional toothed forks pick up slender materials. Multiple ribs evenly support the angle steel stack, which can better distribute the load, reduce single-point pressure and angle steel bending moment, and avoid angle steel deformation. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a three-dimensional structural diagram of a gantry stacker crane according to an embodiment of the present utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the upper part of the gantry frame according to an embodiment of the present utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the lower part of one side of the gantry frame according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the outer side of the fork connecting plate according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the gantry stacker crane in use according to an embodiment of this utility model;

[0020] In the diagram, 1 is the gantry frame, 2 is the traveling wheel mechanism, 3 is the ground track, 4 is the column, 5 is the upper crossbeam, 6 is the first upper sprocket, 7 is the upper sprocket shaft seat, 8 is the composite roller bearing track groove, 9 is the lifting drive motor, 10 is the upper sprocket shaft, 11 is the second upper sprocket, 12 is the lower sprocket, 13 is the drive chain, 14 is the fork connecting plate, 15 is the stiffening plate, 16 is the fork crossbeam, 17 is the connecting bend plate, 18 is the composite roller bearing mounting plate, 19 is the composite roller bearing, 20 is the rack, and 21 is the angle steel stack. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0022] like Figure 1 , 2As shown in Figure 3, this utility model embodiment provides a gantry stacker crane for transporting angle steel, including a gantry frame 1, a lifting transmission mechanism, a ribbed fork, and a gantry frame traveling mechanism. The gantry frame 1 includes one column 4 on each side, and an upper crossbeam 5 fixedly connected to the top of the two columns 4. The gantry frame traveling mechanism includes four traveling wheel mechanisms 2 and a pair of ground tracks 3. The pair of ground tracks 3 are arranged parallel to each other on the ground. The four traveling wheel mechanisms 2 are respectively located on the front and rear sides of the bottom of the two columns 4 on both sides of the gantry frame 1. The traveling wheel mechanisms 2 are connected to the ground tracks 3 in a rolling manner to perform linear guided traveling motion. Among the four traveling wheel mechanisms 2, at least one is a driving wheel mechanism, and the others are driven wheel mechanisms. The driving wheel mechanism includes a motor and a driving wheel. The motor drives the driving wheel to rotate, ensuring that the two columns 4 move stably and synchronously.

[0023] The upper crossbeam 5 is composed of two parallel square steel bars with a gap between them for the transmission chain 13 to pass through. Each column 4 has a vertical composite roller bearing track groove 8 on both its front and rear sides. The lifting transmission mechanism includes a lifting drive motor 9 fixedly installed at the top center of the upper crossbeam 5. The output shaft of the lifting drive motor 9 is fixedly connected to one end of the upper sprocket shafts 10 on both sides. An upper sprocket shaft seat 7 is fixedly installed at each of the top ends of the upper crossbeam 5. The other end of the upper sprocket shaft 10 is rotatably connected to the two upper sprocket shaft seats 7 via upper sprocket shaft bearings on the upper sprocket shaft seats 7. Upper sprocket 1 6 and upper sprocket 2 11 are fixedly installed at the other ends of the two upper sprocket shafts 10, located inside the upper sprocket shaft seats 7. The lifting transmission mechanism also includes a lower sprocket mechanism fixedly installed on the lower part of the two adjacent inner sides of the two columns 4. The lower sprocket mechanism includes a lower sprocket 12, a lower sprocket shaft, and a lower sprocket shaft seat. The lower sprocket shaft seat is fixedly installed on the column 4, and the lower sprocket shaft is rotatably installed in the lower sprocket shaft bearing on the lower sprocket shaft seat. The lower sprocket 12 is fixedly installed on the lower sprocket shaft. The upper sprocket 11 is rotatably connected to the lower sprocket 12 on the same side via a drive chain 13, and the upper sprocket 12 is rotatably connected to the lower sprocket 12 on the same side via another drive chain 13.

[0024] like Figure 3 , 4As shown, the ribbed fork includes a fork beam 16. A fork connecting plate 14 is fixedly connected to each of the left and right ends of the fork beam 16. One side of the fork connecting plate 14 is welded to the end of the fork beam 16, and the other side of the fork connecting plate 14 is bolted with multiple pairs of vertically arranged connecting bent plates 17. The connecting bent plates 17 are L-shaped plates. Each pair of connecting bent plates 17 has two adjacent sides fixedly connected to a section of drive chain 13. The opposite sides of each pair of connecting bent plates 17 are bolted to the other side (outer side) of the fork connecting plate 14. The up-and-down traction of the drive chain 13 drives the fork connecting plate 14 to move up and down, thus causing the fork beam 16 to move up and down synchronously. A vertical composite roller bearing mounting plate 18 is welded to each side of the fork connecting plate 14. A composite roller bearing 19 is fixedly mounted on the upper and lower parts of each composite roller bearing mounting plate 18. The composite roller bearing 19 is slidably connected to the composite roller bearing track groove 8. Several stiffening plates 15 are evenly welded along the length of the fork beam 16 at certain intervals. The height of the stiffening plates 15 should be greater than the thickness of the supporting cantilever on the shelf 20.

[0025] Compared with traditional stacker cranes with suspended forks, the ribbed forks of this utility model embodiment, through the cooperation of composite roller bearing 19 and composite roller bearing track groove 8, make the ribbed forks and column 4 relatively fixed in the horizontal direction. Even if the gantry traveling mechanism starts and stops suddenly, the ribbed forks can still remain stable and not shake.

[0026] like Figure 5 As shown in the figure, the working process of the gantry stacker crane of this utility model embodiment is as follows:

[0027] The shelving unit 20 comprises several uprights arranged in an array and fixed to the ground via a base. Symmetrically fixed horizontal support cantilever arms are mounted on both sides of each upright, from top to bottom. Angle steel stacks are placed on these horizontal support cantilever arms on the same side. Support cantilever arms of the same height together form a storage location, and each location can hold one angle steel stack. Compared to the simple flat stacking of existing angle steel, the shelving unit 20 adopts a three-dimensional, multi-layered, multi-location structure. Combined with a gantry stacker crane, it enables rapid and precise storage and retrieval of angle steel stacks. The multi-support cantilever structure of the shelving unit 20 provides uniform support to multiple locations along the length of the angle steel stack, ensuring stable placement and preventing deformation.

[0028] The gantry traveling mechanism drives the gantry 1 to move horizontally along the ground track 3, which in turn drives the ribbed forks to move horizontally. Starting the lifting drive motor 9 causes the fork beam 16 to rise and fall vertically. Operators only need to design and control the movement steps of the ribbed forks based on the initial pick-up position of the angle steel stack 21 on the shelf 20, or based on the target storage position of the angle steel stack 21 on the shelf 20, thus achieving smooth transportation of the angle steel stack 21.

[0029] In this embodiment of the utility model, all technical features not described in detail are existing technologies or conventional technical means, and will not be repeated here.

[0030] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model.

Claims

1. A gantry stacker crane, comprising a gantry frame (1), forks, and a gantry frame traveling mechanism, wherein the gantry frame (1) comprises one column (4) on each side, and an upper crossbeam (5) fixedly connected to the top ends of the two columns (4), and the bottom ends of the two columns (4) are mounted on the gantry frame traveling mechanism, characterized in that, The forks are mounted on the gantry (1) and can be raised and lowered along the column (4). The forks are ribbed forks, which include a fork beam (16). A fork connecting plate (14) is fixedly connected to each of the left and right ends of the fork beam (16). The inner side of the fork connecting plate (14) is welded to the end of the fork beam (16), and the outer side of the fork connecting plate (14) is slidably connected to the column (4). Several evenly distributed ribs (15) are welded at intervals along the length direction on the fork beam (16). The height of the ribs (15) is greater than the thickness of the support cantilever on the shelf (20).

2. The gantry stacker crane according to claim 1, characterized in that, A vertical composite roller bearing mounting plate (18) is welded to the front and rear sides of the outer side of the fork connecting plate (14). A composite roller bearing (19) is fixedly installed on the upper and lower parts of the inner side of each composite roller bearing mounting plate (18). The composite roller bearing (19) is slidably connected to the composite roller bearing track groove (8) on the front and rear sides of the column (4).

3. A gantry stacker crane according to claim 2, characterized in that, Multiple pairs of vertically arranged connecting plates (17) are fixedly installed on the outer side of the fork connecting plate (14) between a pair of composite roller bearing mounting plates (18). The connecting plates (17) are L-shaped plates. Each pair of connecting plates (17) is fixedly connected to a section of transmission chain (13) on both adjacent sides. The opposite sides of each pair of connecting plates (17) are fixedly installed on the outer side of the fork connecting plate (14) by bolts.

4. A gantry stacker crane according to claim 1, characterized in that, The upper crossbeam (5) includes two parallel square steel bars with a gap in the middle. Each column (4) has a vertical composite roller bearing track groove (8) on its front and rear sides. The lifting drive motor (9) is fixedly installed at the top middle position of the upper crossbeam (5). The output shaft of the lifting drive motor (9) is fixedly connected to one end of the upper sprocket shaft (10) on both sides. The upper sprocket shaft seats (7) are fixedly installed at both ends of the top of the upper crossbeam (5). The other end of the upper sprocket shaft (10) is rotatably connected to the upper sprocket shaft seat (7). The other end of the two upper sprocket shafts (10) is fixedly installed with an upper sprocket (6). The upper sprocket (11), the upper sprocket (6) and the upper sprocket (11) are located inside the upper sprocket shaft seat (7). The lower sprocket mechanism includes the lower sprocket (12), the lower sprocket shaft and the lower sprocket shaft seat. The lower sprocket shaft seat is fixedly installed on the column (4). The lower sprocket shaft is rotatably installed in the lower sprocket shaft bearing on the lower sprocket shaft seat. The lower sprocket (12) is fixedly installed on the lower sprocket shaft. The upper sprocket (6) and the lower sprocket (12) located on the same side are rotatably connected by a drive chain (13). The upper sprocket (11) and the lower sprocket (12) located on the same side are rotatably connected by another drive chain (13).

5. A gantry stacker crane according to claim 1, characterized in that, The gantry traveling mechanism includes four traveling wheel mechanisms (2) and a pair of ground tracks (3). The pair of ground tracks (3) are set parallel to each other on the ground. The four traveling wheel mechanisms (2) are respectively set on the front and rear sides of the bottom of the column (4). The traveling wheel mechanisms (2) are connected to the ground tracks (3) in a rolling manner. At least one of the four traveling wheel mechanisms (2) is a driving wheel mechanism, and the others are driven wheel mechanisms. The driving wheel mechanism includes a motor and a driving wheel that are connected by transmission.

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