Workpiece positioning device for overhead crane during hoisting

Abstract

The utility model relates to a workpiece positioning device during overhead crane hoisting, which belongs to the technical field of overhead crane hoisting equipment and is used for positioning a workpiece in the hoisting process of an overhead crane. According to the technical scheme, the two ends of a crown block frame are erected at the upper end of a crown block rail frame, a plurality of lifting hydraulic cylinders are installed at the lower end of the crown block frame in the length direction, the lower ends of the lifting hydraulic cylinders are connected with the upper end of a movable box body, and the lower end of the movable box body is fixedly connected with a plurality of parallel fork plates; a lifting block is installed on the front end face of the movable box body, a plurality of lifting pressing plates are installed at the front end of the lifting block and located above the fork plates respectively, pressing positioning blocks are installed at the lower ends of the lifting pressing plates respectively, and the pressing positioning blocks are opposite to the upper surfaces of the fork plates respectively. According to the utility model, the long workpiece can be positioned and pressed after being supported by the fork plate of the crown block frame, so that the long workpiece is kept fixed and is not easy to displace in the hoisting process, and the hoisting stability is improved.

Description

Technical Field

[0001] The utility model relates to a device for positioning a workpiece during the lifting process of a crane, and belongs to the technical field of crane equipment. Background Art

[0002] Overhead crane is a kind of movable crane with bridge frame running on elevated track, which is usually composed of bridge frame, electric-controlled mobile trolley, lifting equipment, wire rope, reducer, coupling, brake, buffer and other components. Overhead crane is used for daily production to carry equipment, warehouse loading and unloading, lifting and repairing heavy equipment and material transportation. In the process of overhead crane lifting workpiece, hook, clamp or fork are often used to position and lift different workpieces to keep them stable during lifting and handling.

[0003] At present, when an overhead crane uses a fork to transport a long workpiece, the fork is moved to the bottom of the workpiece, and then lifted and supported to achieve the transportation of the workpiece. However, in actual use, when lifting a long rectangular workpiece, the fork has a large contact area with it, and it is not easy to move during transportation and is relatively stable. For a cylindrical workpiece, although the fork is tilted at a certain angle to make it face inward during transportation, its contact area is small and it is easy to roll due to the shaking during transportation, making it difficult to effectively position it, resulting in poor stability during lifting. Therefore, there is an urgent need to improve the lifting structure of the overhead crane to ensure the stability of the workpiece lifting. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a workpiece positioning device for use in overhead crane lifting. The workpiece positioning device can position and hold a long workpiece to keep it fixed, making it less likely to be displaced during the lifting process, thereby improving the lifting stability.

[0005] The technical solution to solve the above technical problems is:

[0006] A workpiece positioning device for overhead crane lifting, wherein both ends of the overhead crane bridge are mounted on the upper end of the overhead crane track frame, and the improvement thereof is that it also has a lifting hydraulic cylinder, a moving box, a fork plate, a lifting block, a lifting pressure plate, and a clamping positioning block. A plurality of lifting hydraulic cylinders are installed along the length direction at the lower end of the overhead crane bridge, and the lower ends of the plurality of lifting hydraulic cylinders are connected to the upper end of the moving box, and a plurality of parallel fork plates are fixedly connected to the lower end of the moving box, and a lifting block is installed on the front end surface of the moving box, and the lifting block is connected to an up and down moving mechanism in the moving box, and a plurality of lifting pressure plates are installed at the front end of the lifting block, and the plurality of lifting pressure plates are respectively located above the plurality of fork plates, and clamping positioning blocks are respectively installed at the lower ends of the lifting pressure plates, and the plurality of clamping positioning blocks are respectively opposite to the upper surface of the fork plates.

[0007] The workpiece positioning device during the overhead crane lifting, the up and down moving mechanism in the moving box body comprises an electromagnet, a magnet block, a fixed rod, a sliding cross bar, a sliding sleeve, and a reset spring. A plurality of electromagnets are fixed on the inner bottom surface of the moving box body along the length direction, and vertical fixed rods are respectively fixed on the bottom surface of the moving box body behind the plurality of electromagnets, and the upper ends of the plurality of fixed rods are respectively provided with horizontal sliding cross bars, and the rear ends of the plurality of sliding cross bars are respectively provided with sliding holes, and sliding sleeves are installed in the sliding holes, and the inner walls of the sliding sleeves are slidingly matched with the outer walls of the fixed rods, and the middle parts of the plurality of sliding cross bars are respectively fixed with magnet blocks, and the plurality of magnet blocks are respectively opposite to the plurality of electromagnets at the bottom of the moving box body, and the rear ends of the plurality of sliding cross bars are respectively connected to the upper ends of the plurality of reset springs, and the lower ends of the plurality of reset springs are respectively fixed to the lower ends of the plurality of fixed rods, and a plurality of vertical sliding grooves are provided on the front end surface of the moving box body, and the plurality of sliding grooves are respectively opposite to the front ends of the plurality of sliding cross bars, and the sliding cross bars are slidingly matched with the sliding grooves, and the front ends of the plurality of sliding cross bars are respectively connected with the lifting blocks through the plurality of sliding grooves.

[0008] The workpiece positioning device during overhead crane lifting, the lifting and pressing plate is an L-shaped plate, multiple lifting and pressing plates are evenly distributed along the length direction of the lifting block, the rear end of the horizontal plate of the L-shaped plate of the lifting and pressing plate is vertically welded and connected to the front end surface of the lifting block, the vertical plate of the L-shaped plate of the lifting and pressing plate is vertically downward, and the lower end of the vertical plate is connected to the clamping positioning block.

[0009] The workpiece positioning device during overhead crane lifting, the clamping positioning block is composed of a pressure plate, a fixed cylinder, an airbag, a T-shaped rod, and a buffer pad. The pressure plate is an N-shaped plate, and multiple fixed cylinders are fixed on the inner surface of the pressure plate. The airbag is placed in the inner cavity of the fixed cylinder, and a T-shaped rod is arranged under the airbag. The two ends of the cross bar of the T-shaped rod are slidably matched with the inner wall of the fixed cylinder, and the lower end of the straight rod of the T-shaped rod is fixedly connected to the upper plane of the buffer pad.

[0010] The beneficial effects of the utility model are:

[0011] The lifting hydraulic cylinder under the overhead crane bridge of the utility model can drive the moving box to move up and down, and a fork plate is installed at the lower end of the moving box, and the fork plate can be supported under the workpiece; a lifting block is installed at the front end of the moving box, and the lifting block can move up and down, and the lifting block drives the lifting plate and the clamping positioning block to move downward, and the clamping positioning block clamps the workpiece above the fork plate; the sliding cross bar in the moving box can move up and down along the fixed rod under the action of the electromagnet and the magnet block, and the front end of the sliding cross bar is connected to the lifting block, driving the lifting block to move up and down; the air bag in the clamping positioning block can make the buffer pad perform corresponding elastic deformation, so that it matches the outer end of the long workpiece, and has a clamping effect on the workpiece.

[0012] The utility model can enable the fork plate of the overhead crane bridge frame to hold the long workpiece and then position and press the long workpiece, so that the long workpiece is kept fixed, is not prone to displacement during the lifting process, and improves the lifting stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the mobile box and connecting parts;

[0015] Figure 3 It is a schematic diagram of the component structure inside the mobile box;

[0016] Figure 4 It is a structural schematic diagram of the clamping positioning block;

[0017] Figure 5 yes Figure 4 AA section view.

[0018] The markings in the figure are as follows: overhead crane track frame 1, overhead crane bridge frame 2, lifting hydraulic cylinder 3, moving box 4, fork plate 5, lifting block 6, lifting pressure plate 7, clamping positioning block 8, electromagnet 9, magnet block 10, fixed rod 11, sliding cross bar 12, sliding sleeve 13, return spring 14, sliding groove 15, pressure plate 16, fixed cylinder 17, air bag 18, T-shaped rod 19, buffer pad 20. DETAILED DESCRIPTION

[0019] The utility model is composed of a crane bridge frame 2, a lifting hydraulic cylinder 3, a moving box 4, a fork plate 5, a lifting block 6, a lifting pressure plate 7, and a pressing and positioning block 8.

[0020] Figure 1 , 2 It is shown that both ends of the crane bridge 2 are mounted on the upper end of the crane track frame 1, and a plurality of lifting hydraulic cylinders 3 are installed along the length direction at the lower end of the crane bridge 2, and the lower ends of the plurality of lifting hydraulic cylinders 3 are connected to the upper end of the mobile box 4, and a plurality of parallel fork plates 5 are fixedly connected to the lower end of the mobile box 4. The lifting hydraulic cylinders 3 under the crane bridge 2 can drive the mobile box 4 to move up and down, and the fork plate 5 at the lower end of the mobile box 4 can be supported under the workpiece.

[0021] Figure 1 , 2It is shown that a lifting block 6 is installed on the front end surface of the mobile box 4, and the lifting block 6 is connected to the up-and-down moving mechanism in the mobile box 4. A plurality of lifting and pressing plates 7 are installed on the front end of the lifting block 6, and the plurality of lifting and pressing plates 7 are respectively located above the plurality of fork plates 5. The lower ends of the lifting and pressing plates 7 are respectively installed with clamping and positioning blocks 8, and the plurality of clamping and positioning blocks 8 are respectively opposite to the upper surfaces of the fork plates 5. The up-and-down moving mechanism in the mobile box 4 can drive the lifting block 6 to move up and down, and the lifting block 6 drives the lifting and pressing plates 7 and the clamping and positioning blocks 8 to move downward, and the clamping and positioning blocks 8 clamp the workpiece above the fork plate 5, and clamp and position the long workpiece to prevent the long workpiece from moving.

[0022] Figure 3 It is shown that the up-and-down moving mechanism in the moving box 4 is composed of an electromagnet 9, a magnet block 10, a fixed rod 11, a sliding cross bar 12, a sliding sleeve 13, and a reset spring 14. Multiple electromagnets 9 are fixed on the inner bottom surface of the moving box 4 along the length direction, and vertical fixed rods 11 are fixed on the bottom surface of the moving box 4 behind the multiple electromagnets 9. The upper ends of the multiple fixed rods 11 are respectively provided with horizontal sliding cross bars 12, and the rear ends of the multiple sliding cross bars 12 are respectively provided with sliding holes, and sliding sleeves 13 are installed in the sliding holes. The inner wall of the sliding sleeve 13 is in sliding fit with the outer wall of the fixed rod 11. Since the length of the sliding sleeve 13 is much larger than the cross section of the sliding cross bar 12, the sliding cross bar 12 can maintain a vertical position when sliding along the fixed rod 11 without swinging up and down.

[0023] Figure 3 It is shown that magnet blocks 10 are fixed in the middle of the plurality of sliding cross bars 12, and the plurality of magnet blocks 10 are respectively opposite to the plurality of electromagnets 9 at the bottom of the moving box 4. When the electromagnets 9 are powered on, the magnet blocks 10 can be attracted to drive the sliding cross bars 12 to move downward. The rear ends of the plurality of sliding cross bars 12 are respectively connected to the upper ends of the plurality of reset springs 14, and the lower ends of the plurality of reset springs 14 are respectively fixed to the lower ends of the plurality of fixed rods 11. When the electromagnets 9 lose power, the reset springs 14 are reset by their own elasticity, and the sliding cross bars 12 and the magnet blocks 10 are moved upward and reset.

[0024] Figure 3 It is shown that there are multiple vertical sliding grooves 15 on the front end surface of the mobile box 4, and the multiple sliding grooves 15 are respectively opposite to the front ends of the multiple sliding cross bars 12. The sliding cross bars 12 and the sliding grooves 15 are slidingly matched, and the front ends of the multiple sliding cross bars 12 are respectively connected to the lifting block 6 through the multiple sliding grooves 15. When the sliding cross bar 12 moves downward under the action of the electromagnet 9, the front end of the sliding cross bar 12 drives the lifting block 6 to move downward, so that the lifting block 6 can drive the lifting plate 7 and the clamping positioning block 8 to move downward.

[0025] Figure 1 , 2It is shown that the lifting and pressing plate 7 is an L-shaped plate, and multiple lifting and pressing plates 7 are evenly distributed along the length direction of the lifting block 6. The rear end of the horizontal plate of the L-shaped plate of the lifting and pressing plate 7 is vertically welded to the front end surface of the lifting block 6, and the vertical plate of the L-shaped plate of the lifting and pressing plate 7 is vertically downward, and the lower end of the vertical plate is connected to the compression positioning block 8.

[0026] Figure 4 , 5 It is shown that the clamping and positioning block 8 is composed of a pressing plate 16, a fixed cylinder 17, an airbag 18, a T-shaped rod 19, and a buffer pad 20. The pressing plate 16 is an N-shaped plate, and a plurality of fixed cylinders 17 are fixed on the inner surface of the pressing plate 16. The airbag 18 is placed in the inner cavity of the fixed cylinder 17. The airbag 18 is a plurality of elastic annular airbags, and the plurality of elastic annular airbags are connected to each other. There is a T-shaped rod 19 below the airbag 18, and a through hole is drilled at the inner bottom end of the fixed cylinder 17. The lower end of the T-shaped rod 19 passes through the through hole. The two ends of the cross bar of the T-shaped rod 19 are slidably matched with the inner wall of the fixed cylinder 17. The lower end of the straight rod of the T-shaped rod 19 is fixedly connected to the upper plane of the buffer pad 20, and the lower end of the buffer pad 20 is provided with an anti-skid and wear-resistant layer. The airbag 18 in the clamping and positioning block 8 can make the buffer pad 20 undergo corresponding elastic deformation, so that it matches the outer end of the long workpiece and plays a clamping role on the workpiece.

[0027] The use process of the utility model is as follows:

[0028] First, the overhead crane bridge 2 is translated to the long workpiece storage position, and then cooperates with multiple lifting hydraulic cylinders 3 to drive the moving box 4 and the moving block 6 to move downward, and then continues to translate to push multiple fork plates 5 to insert into the lower side of the long workpiece;

[0029] The electromagnet 9 in the moving box 4 is energized to attract the magnet block 10 to move downward, and the magnet block 10 drives the sliding cross bar 12 to move downward along the fixed rod 11, and the front end of the sliding cross bar 12 drives the lifting block 6 to move downward, so that the lifting block 6 can drive the lifting plate 7 and the clamping positioning block 8 to move downward;

[0030] The positioning block 8 is pressed down, and the buffer pad 20 is pressed down until it contacts the long workpiece. The buffer pad 20 is further pressed down, and the buffer pad 20 is affected by the shape of the outer end of the long workpiece. Part of the buffer pad 20 is squeezed by the outer end of the workpiece and deformed, so that the T-shaped rod 19 at the corresponding position is squeezed and moves toward the inside of the fixed cylinder 17, compressing the airbag 18 in the fixed cylinder 17. After the movement is completed, the buffer pad 2 is deformed into a shape matching the outer end of the long workpiece, so as to fully and comprehensively press and fix it, so that the position of the long workpiece is kept fixed, and the positioning stability is improved;

[0031] After being pressed and fixed, multiple lifting hydraulic cylinders 3 drive the moving box 4 and the moving block 6 to move upward, and then the overhead crane body 2 moves horizontally to realize the lifting of the long workpiece.

[0032] An embodiment of the present utility model is as follows:

[0033] The model of the lifting hydraulic cylinder 3 is XDR-OIL-1 telescopic hydraulic cylinder;

[0034] The length of the mobile box 4 is 2000mm, the width is 550mm, and the height is 650mm;

[0035] The length of the fork plate 5 is 1200 mm, the width is 220 mm, and the thickness is 30 mm;

[0036] The lifting block 6 has a length of 2000 mm, a width of 100 mm and a height of 100 mm;

[0037] The width of the lifting and pressing plate 7 is 40 mm, the length of the horizontal plate is 150 mm, and the length of the vertical plate is 300 mm;

[0038] The model of electromagnet 9 is H803024-24A115;

[0039] The diameter of the fixing rod 11 is 45 mm and the length is 500 mm;

[0040] The sliding crossbar 12 has a diameter of 35 mm and a length of 475 mm;

[0041] The sliding sleeve 13 has a diameter of 65 mm and a length of 130 mm;

[0042] The model of the return spring 14 is LS-05C;

[0043] The width of the sliding groove 15 is 35 mm and the length is 500 mm;

[0044] The pressing plate 16 of the clamping positioning block 8 has a length of 200 mm, a width of 160 mm and a height of 100 mm, the diameter of the fixing tube 17 has a diameter of 45 mm and a height of 30 mm, the diameter of the T-bar 19 has a diameter of 35 mm and a length of 45 mm, and the length of the buffer pad 20 has a width of 180 mm and a thickness of 5 mm.

Claims

1. A workpiece positioning device for overhead crane hoisting, wherein both ends of an overhead crane bridge frame (2) are mounted on the upper end of an overhead crane track frame (1), characterized in that: The invention also comprises a lifting hydraulic cylinder (3), a moving box (4), a fork plate (5), a lifting block (6), a lifting pressure plate (7), and a clamping positioning block (8). A plurality of lifting hydraulic cylinders (3) are installed at the lower end of the overhead crane bridge frame (2) along the length direction. The lower ends of the plurality of lifting hydraulic cylinders (3) are connected to the upper end of the moving box (4). The lower end of the moving box (4) is fixedly connected to a plurality of parallel fork plates (5). A lifting block (6) is installed on the front end surface of the moving box (4). The lifting block (6) is connected to an up-and-down moving mechanism in the moving box (4). A plurality of lifting pressure plates (7) are installed at the front end of the lifting block (6). The plurality of lifting pressure plates (7) are respectively located above the plurality of fork plates (5). The lower ends of the plurality of lifting pressure plates (7) are respectively installed with clamping positioning blocks (8). The plurality of clamping positioning blocks (8) are respectively opposite to the upper surfaces of the plurality of fork plates (5).

2. The workpiece positioning device during overhead crane hoisting according to claim 1, characterized in that: The up-and-down moving mechanism in the movable box (4) comprises an electromagnet (9), a magnet block (10), a fixed rod (11), a sliding cross rod (12), a sliding sleeve (13), and a reset spring (14). A plurality of electromagnets (9) are fixed on the inner bottom surface of the movable box (4) along the length direction. Vertical fixed rods (11) are respectively fixed on the bottom surface of the movable box (4) behind the plurality of electromagnets (9). The upper ends of the plurality of fixed rods (11) are respectively provided with horizontal sliding cross rods (12). The rear ends of the plurality of sliding cross rods (12) are respectively provided with sliding holes. The sliding holes are provided with sliding sleeves (13). The inner wall of the sliding sleeve (13) is slidably matched with the outer wall of the fixed rod (11). A magnet block (10) is fixed to the middle of the cross bar (12), and the plurality of magnet blocks (10) are respectively opposite to the plurality of electromagnets (9) at the bottom of the movable box (4). The rear ends of the plurality of sliding cross bars (12) are respectively connected to the upper ends of the plurality of return springs (14), and the lower ends of the plurality of return springs (14) are respectively fixed to the lower ends of the plurality of fixed rods (11). The front end surface of the movable box (4) is provided with a plurality of vertical sliding grooves (15), and the plurality of sliding grooves (15) are respectively opposite to the front ends of the plurality of sliding cross bars (12). The sliding cross bars (12) and the sliding grooves (15) are in sliding cooperation, and the front ends of the plurality of sliding cross bars (12) respectively pass through the plurality of sliding grooves (15) and are connected to the lifting block (6).

3. The workpiece positioning device during overhead crane hoisting according to claim 2, characterized in that: The lifting and pressing plate (7) is an L-shaped plate, and a plurality of lifting and pressing plates (7) are evenly distributed along the length direction of the lifting block (6). The rear end of the horizontal plate of the L-shaped plate of the lifting and pressing plate (7) is vertically welded to the front end surface of the lifting block (6), and the vertical plate of the L-shaped plate of the lifting and pressing plate (7) is vertically downward, and the lower end of the vertical plate is connected to the pressing positioning block (8).

4. The workpiece positioning device during overhead crane hoisting according to claim 1, characterized in that: The clamping positioning block (8) is composed of a pressing plate (16), a fixing tube (17), an airbag (18), a T-shaped rod (19), and a buffer pad (20). The pressing plate (16) is an N-shaped plate. A plurality of fixing tubes (17) are fixed to the inner surface of the pressing plate (16). The airbag (18) is placed in the inner cavity of the fixing tube (17). A T-shaped rod (19) is provided below the airbag (18). Both ends of the cross bar of the T-shaped rod (19) are slidably matched with the inner wall of the fixing tube (17). The lower end of the straight rod of the T-shaped rod (19) extends out of the fixing tube (17) and is fixedly connected to the upper plane of the buffer pad (20).

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