Stable and reliable gantry crane with electric hoist

Abstract

A stable and reliable gantry crane with an electric hoist comprises two upper end beams, supporting legs fixed to the bottoms of the upper end beams, lower end beams fixed to the bottoms of the supporting legs, two main beams fixed between the two upper end beams, a trolley installed on the tops of the two main beams, the electric hoist fixed to the trolley, and an installation frame fixed to a lifting hook assembly of the electric hoist. Anti-swing rods are slidably connected to the mounting frames, symmetrical sliding rails are arranged between the two main beams, the top ends of the sliding rails are fixed to the inner side of the upper end beam, the bottom ends of the sliding rails are fixed to the inner side of the lower end beam, upper limiting plates are arranged at the top ends of the sliding rails and detachably fixed to the top of the upper end beam, and lower limiting plates are arranged at the bottom ends of the sliding rails; the lower limiting plate is detachably fixed to the bottom of the lower end beam, a sliding block is slidably connected into the sliding rail, a mounting hole is formed in the middle of the sliding block, and the two ends of the anti-swing rod are detachably fixed into the mounting hole. And an anti-collision device is mounted on the upper limiting plate. The steel wire rope is convenient to mount and dismount, and swinging of the steel wire rope can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and particularly relates to a stable and reliable electric hoist gantry crane. Background Art

[0002] A crane refers to a multi-action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. There are many types of cranes, such as gantry cranes, bridge cranes, tower cranes, etc. Among them, a gantry crane includes a bridge, on which a trolley that can move left and right is installed. An electric hoist is fixed on the trolley. Legs are fixed at both ends of the bridge, and a lower end beam is fixed at the bottom of the legs for easy operation along the crane track. Gantry cranes are commonly used in outdoor places. During use, due to weather effects such as wind, the steel wire rope of the electric hoist is likely to swing significantly, affecting the stability of lifting. In the technical solution disclosed in the patent with the patent publication number CN219546544U and the patent name of a bridge crane with an anti-sway function, a limiting rod is provided between two groups of brackets. The end of the limiting rod is connected to the bracket through a sliding member. The limiting rod moves up and down with the lifting hook to reduce the swinging of the steel wire rope. However, during the installation process, the limiting rod is an integral structure, and the lifting grooves inside the brackets are structures with both the top and bottom closed, which is not convenient for installing the limiting rod between the two lifting grooves. Content of the Utility Model

[0003] The purpose of the utility model is to provide a stable and reliable electric hoist gantry crane, which is convenient for installation and disassembly, can also reduce the swing of the steel wire rope, and improve the stability of lifting.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A stable and reliable electric hoist gantry crane includes two upper end beams. Legs are fixed at the bottom of the upper end beams. A lower end beam is fixed at the bottom of the legs. A traveling mechanism is installed on the lower end beam. Two main beams are fixed between the two upper end beams. A trolley that can move left and right is installed on the top of the two main beams. An electric hoist is fixed on the trolley. A steel wire rope is wound around the electric hoist. A hook assembly is installed on the steel wire rope. An installation frame is detachably fixed on the hook assembly. A horizontal anti-sway rod is slidably connected to the installation frame. Symmetrical vertical slide rails are provided between the two main beams. The top end of the slide rail is detachably fixed inside the upper end beam, and the bottom end of the slide rail is detachably fixed inside the lower end beam. An upper limit plate is provided at the top end of the slide rail, and the upper limit plate is detachably fixed on the top of the upper end beam. A lower limit plate is provided at the bottom end of the slide rail, and the lower limit plate is detachably fixed on the bottom of the lower end beam. A slider is slidably connected inside the slide rail. An installation hole is provided in the middle of the slider. Both ends of the anti-sway rod are detachably fixed in the corresponding installation holes; an anti-collision device is installed on the upper limit plate. The anti-collision device includes an anti-collision block slidably connected to the slide rail, and several first springs are fixed between the anti-collision block and the limit plate.

[0006] The hook assembly includes a mounting rod, with a hook mounted in the middle of the mounting rod. At both ends of the mounting rod, pulleys cooperating with the steel wire rope are rotatably connected, and a pulley housing fixed to the mounting rod is provided outside the pulleys; the mounting frame includes a mounting plate, and at the bottom of the mounting plate, inverted U-shaped clamping frames corresponding to the pulley housings are fixed. The top of the pulley housing is arranged in the corresponding clamping frame, and the two are detachably and fixedly connected by screws. A horizontal sliding sleeve is fixed to the top of the mounting plate, and the anti-sway rod is slidably connected in the sliding sleeve.

[0007] The anti-sway rod includes a first rod and a second rod spliced together. A threaded column is fixed to the inner end of the first rod, and a threaded hole cooperating with the threaded column is provided at the inner end of the second rod; the outer ends of the first rod and the second rod are arranged in the corresponding mounting holes, and a locking bolt for locking the first rod and the second rod is threadedly connected to the slider.

[0008] A silica gel pad is detachably mounted at the bottom of the anti-collision block.

[0009] Strip-shaped holes are provided on the side of the slide rail, and a slide rod is detachably fixed to the side of the anti-collision block. The slide rod is slidably connected in the corresponding strip-shaped hole.

[0010] A fixing plate is detachably fixed to the top of the slide rod, and a second spring is fixed to the top of the fixing plate; an installation column is fixed to the top of the slide rod, and an installation hole is provided at the bottom of the fixing plate, and the installation column is inserted into the installation hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] (1) The mounting frame is detachably fixed to the hook assembly, which is convenient for installation and disassembly. A horizontal anti-sway rod is slidably connected to the mounting frame. The anti-sway rod moves up and down with the hook assembly, which can reduce the swing of the steel wire rope and improve the stability of hoisting.

[0013] (2) Symmetric vertical slide rails are provided between the two main beams. The top end of the slide rail is detachably fixed to the inner side of the upper end beam, which is convenient for increasing the lifting height of the crane. The bottom end of the slide rail is detachably fixed to the inner side of the lower end beam. There is no need to change the main structure of the existing gantry crane, which is convenient for direct installation on the gantry crane and has strong adaptability; both ends of the anti-sway rod are detachably fixed in the mounting holes of the corresponding sliders. When the anti-sway rod moves up and down with the hook assembly, the sliders slide up and down along the corresponding slide rails, and the operation is stable.

[0014] (3) When the anti-sway rod rises rapidly with the hook assembly due to improper operation or equipment failure, etc., the anti-collision device on the upper limit plate plays an anti-collision and buffering role to reduce the collision loss. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a partial structural schematic diagram of the present utility model;

[0017] Figure 3 is a structural schematic diagram of the anti-collision device;

[0018] Figure 4 is a structural schematic diagram of the hook assembly and the anti-sway rod;

[0019] Figure 5 is a partial structural schematic diagram of the anti-sway rod;

[0020] Figure 6 is a partial structural schematic diagram of the slide rail.

[0021] In the figure: 1 - upper end beam, 2 - limit plate, 3 - main beam, 4 - electric hoist, 5 - trolley, 6 - steel wire rope, 7 - anti-sway rod, 8 - hook assembly, 9 - slide rail, 10 - leg, 11 - lower end beam, 12 - anti-collision device, 13 - slider, 14 - first spring, 15 - slide bar, 16 - anti-collision block, 17 - silica gel pad, 18 - sliding sleeve, 19 - first rod, 20 - mounting plate, 21 - clamping frame, 22 - pulley housing, 23 - hook, 24 - mounting rod, 25 - second rod, 26 - threaded column, 27 - second spring, 28 - fixing plate, 29 - mounting column, 30 - strip hole. Specific embodiments

[0022] Such as Figures 1-6As shown in the figure, a stable and reliable electric hoist gantry crane includes two upper end beams 1. At the bottom of the upper end beam 1, there are fixed legs 10. At the bottom of the legs 10, there is a fixed lower end beam 11. A traveling mechanism is installed on the lower end beam 11 to enable the lower end beam 11 to run along the crane track. Between the two upper end beams 1, there are fixed two main beams 3. On the top of the two main beams 3, there is a trolley 5 that can move left and right. An electric hoist 4 is fixed on the trolley 5. A steel wire rope 6 is wound around the electric hoist 4. A hook assembly 8 is installed on the steel wire rope 6 for hooking goods. This is the prior art and will not be elaborated here. A mounting bracket is detachably fixed on the hook assembly 8 for easy installation and disassembly. A horizontal anti-sway rod 7 is slidably connected to the mounting bracket. The anti-sway rod 7 can move up and down with the hook assembly 8, which can reduce the sway of the steel wire rope 6 and improve the lifting stability. Between the two main beams 3, there are symmetric vertical slide rails 9. The slide rails 9 correspond to the upper end beams 1 one by one. The back of the slide rails 9 is in contact with the inner side of the upper end beam 1 and the inner side of the lower end beam 11. The top of the slide rail 9 is detachably fixed to the inner side of the upper end beam 1, and the bottom of the slide rail 9 is detachably fixed to the inner side of the lower end beam 11. An upper limit plate 2 is provided at the top of the slide rail 9, and the upper limit plate 2 is detachably fixed to the top of the upper end beam 1. A lower limit plate is provided at the bottom of the slide rail 9, and the lower limit plate is detachably fixed to the bottom of the lower end beam 11 to play a limiting role and is also convenient for installation and disassembly. A slider 13 is slidably connected in the slide rail 9. The slider 13 can slide up and down along the slide rail 9. There is a mounting hole in the middle of the slider 13. Both ends of the anti-sway rod 7 are detachably fixed in the corresponding mounting holes. An anti-collision device 12 is installed on the upper limit plate 2. The anti-collision device 12 includes an anti-collision block 16 slidably connected to the slide rail 9. Between the anti-collision block 16 and the limit plate 2, there are fixed several first springs 14. When, due to improper operation, equipment failure and other reasons, the hook assembly 8 is quickly lifted, the anti-sway rod 7 quickly rises with the hook assembly 8 until the slider 13 contacts the anti-collision block 16 and upwardly compresses the first springs 14 to play a buffering role.

[0023] The hook assembly 8 includes a mounting rod 24. In the middle of the mounting rod 24, there is a hook 23. At both ends of the mounting rod 24, there are rotatably connected pulleys that cooperate with the steel wire rope 6. A pulley housing 22 is provided outside the pulley. The mounting bracket includes a mounting plate 20. At the bottom of the mounting plate 20, there are fixed inverted U-shaped clamping brackets 21 corresponding to the pulley housings 22 one by one. The top of the pulley housing 22 is arranged in the corresponding clamping bracket 21 and they are detachably fixed and connected by screws for easy installation and disassembly. At the top of the mounting plate 20, there is fixed a horizontal sliding sleeve 18. The anti-sway rod 7 is slidably connected in the sliding sleeve 18. When the hook assembly 8 moves left and right with the electric hoist 4 and the trolley 5, the sliding sleeve 18 slides left and right along the anti-sway rod 7.

[0024] The anti-sway bar 7 includes a first rod 19 and a second rod 25 spliced together. A threaded post 26 is fixed to the inner end of the first rod 19, and a threaded hole for cooperating with the threaded post 26 is provided at the inner end of the second rod 25, which is convenient for installation and disassembly. The outer ends of the first rod 19 and the second rod 25 are arranged in corresponding mounting holes, and the outer ends of the first rod 19 and the second rod 25 can move left and right along the mounting holes. A locking bolt for locking the first rod 19 and the second rod 25 is threadedly connected to the slider 13. After the threaded post 26 is in place in the threaded hole, the locking bolt on the slider 13 is tightened to lock the positions of the first rod 19 and the second rod 25.

[0025] A silica gel pad 17 is detachably installed at the bottom of the anti-collision block 16, which plays a role of buffering and protection.

[0026] A strip-shaped hole is provided on the side of the slide rail 9. A slide rod 15 is detachably fixed to the side of the anti-collision block 16, and the slide rod 15 is slidably connected in the corresponding strip-shaped hole. When the slider 13 contacts the anti-collision block 16 and the slider 13 slides upward along the slide rail 9, the slide rod 15 slides upward along the strip-shaped hole, which plays a limiting role to prevent the slider 13 from being knocked out of the slide rail 9.

[0027] A fixing plate 28 is detachably fixed to the top of the slide rod 15, and a second spring 27 is fixed to the top of the fixing plate 28. An installation post 29 is fixed to the top of the slide rod 15, and an installation hole is provided at the bottom of the fixing plate 28. The installation post 29 is inserted into the installation hole, which is convenient for installation and disassembly. When the slide rod 15 moves upward with the anti-collision block 16 until the second spring 27 contacts the top of the strip-shaped hole, it plays a further buffering role to reduce collision damage.

[0028] During the installation process, the slider 13 is installed on the slide rail 9 from the bottom of the slide rail 9, and then the limit plate 2 at the bottom of the slide rail 9 is fixed in place. The outer ends of the first rod 19 and the second rod 25 are respectively arranged at the innermost of the corresponding mounting holes, with a gap between the inner end of the first rod 19 and the inner end of the second rod 25. Then the first rod 19 and the second rod 25 are rotated to thread the threaded post 26 into the threaded hole to complete the connection between the first rod 19 and the second rod 25. Then the locking bolt on the slider 13 is tightened to lock the positions of the first rod 19 and the second rod 25.

[0029] During the use process, the goods are hooked on the hook assembly 8, and the electric hoist 4 drives the hook assembly 8 and the goods to be lifted. During the lifting process, the anti-sway bar 7 runs upward with the hook assembly 8, which can reduce the swing of the steel wire rope 6. When the trolley 5 runs left and right along the main beam 3, the hook assembly 8 can slide left and right along the anti-sway bar 7, and the lower end beam 11 drives the crane to run along the crane track to transport the goods to the destination.

[0030] The above embodiments are descriptions of the present invention, not limitations on the present invention. Any scheme obtained by simply transforming the present invention belongs to the protection scope of the present invention.

Claims

1. A stable and reliable electric hoist gantry crane, comprising two upper end beams, legs are fixed at the bottom of the upper end beams, a lower end beam is fixed at the bottom of the legs, a walking mechanism is installed on the lower end beam, two main beams are fixed between the two upper end beams, a trolley that can move left and right is installed on the top of the two main beams, an electric hoist is fixed on the trolley, a steel wire rope is wound around the electric hoist, and a hook assembly is installed on the steel wire rope, characterized in that: A mounting frame is detachably fixed on the hook assembly, and a horizontal anti-sway bar is slidably connected to the mounting frame. A symmetrical vertical slide rail is arranged between the two main beams, and the top end of the slide rail is detachably fixed to the inner side of the upper end beam, and the bottom end of the slide rail is detachably fixed to the inner side of the lower end beam. An upper limit plate is arranged on the top of the slide rail, and the upper limit plate is detachably fixed to the top of the upper end beam, and a lower limit plate is arranged on the bottom end of the slide rail, and the lower limit plate is detachably fixed to the bottom of the lower end beam. A slider is slidably connected in the slide rail, and a mounting hole is arranged in the middle of the slider, and both ends of the anti-sway bar are detachably fixed in the corresponding mounting holes; an anti-collision device is installed on the upper limit plate, and the anti-collision device includes an anti-collision block slidably connected to the slide rail, and a plurality of first springs are fixed between the anti-collision block and the limit plate.

2. The stable and reliable electric hoist gantry crane according to claim 1, characterized in that: The hook assembly includes a mounting rod, a hook is installed in the middle of the mounting rod, pulleys cooperating with the wire rope are rotatably connected at both ends of the mounting rod, and a pulley shell fixed to the mounting rod is provided outside the pulley; the mounting frame includes a mounting plate, an inverted U-shaped clamping frame corresponding to the pulley shell is fixed at the bottom of the mounting plate, the top of the pulley shell is arranged in the corresponding clamping frame, and the two are detachably fixedly connected by screws, and a horizontal sliding sleeve is fixed on the top of the mounting plate, and the anti-sway bar is slidably connected in the sliding sleeve.

3. The stable and reliable electric hoist gantry crane as claimed in claim 2, characterized in that: The anti-sway rod includes a first rod and a second rod spliced ​​together, the inner end of the first rod is fixed with a threaded column, and the inner end of the second rod is provided with a threaded hole matching the threaded column; the outer ends of the first rod and the second rod are arranged in corresponding mounting holes, and the slider is threadedly connected with a locking bolt for locking the first rod and the second rod.

4. The stable and reliable electric hoist gantry crane according to claim 1, characterized in that: The bottom of the anti-collision block is detachably mounted with a silicone pad.

5. The stable and reliable electric hoist gantry crane according to claim 1, characterized in that: A strip hole is arranged on the side of the slide rail, and a slide bar is detachably fixed on the side of the anti-collision block, and the slide bar is slidably connected in the corresponding strip hole.

6. The stable and reliable electric hoist gantry crane as claimed in claim 5, characterized in that: A fixing plate is detachably fixed on the top of the slide bar, and a second spring is fixed on the top of the fixing plate; a mounting column is fixed on the top of the slide bar, and a mounting hole is provided at the bottom of the fixing plate, and the mounting column is plugged into the mounting hole.

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