Electric hoist of portal crane

Abstract

An electric hoist of a portal crane comprises an electric hoist body, the electric hoist body comprises a shell, a winding drum is rotationally connected in the shell, a motor is in transmission at one end of the winding drum, a steel wire rope is wound on the winding drum, a lifting hook assembly is installed at the extending end of the steel wire rope, a top plate is arranged at the top of the shell, and the bottom of the top plate is attached to the top of the shell. Symmetrical inserting columns are fixed to the bottom of the top plate, inserting holes corresponding to the inserting columns are formed in the top of the shell, two first threaded rods are fixed to the end of the top plate at intervals, side plates capable of moving left and right are arranged on the first threaded rods, the outer ends of the first threaded rods are in threaded connection with first locking nuts, and the first locking nuts abut against the outer sides of the side plates. A vertical telescopic sleeve is fixed to the outer side of the side plate, a horizontal telescopic device is fixed to the bottom of the telescopic sleeve, and a mounting frame is fixed to the inner end of the telescopic device and detachably fixed to the lifting hook assembly. The swing of the crane can be reduced, and the mounting operation is also convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to an electric hoist of a gantry crane. Background Art

[0002] A crane refers to a multi-action lifting machine that can lift heavy objects vertically and move them horizontally within a certain range. With the widespread use of cranes, many safety accidents occur every year, many of which are caused by the swaying of the crane when the hoisted objects are moved. Gantry cranes, in particular, are often used in outdoor places such as ports and docks and are easily affected by the external environment. When the crane is moving, the hoisted objects are prone to sway, which poses a safety hazard. The patent publication number is CN213505647U, and the patent name is an anti-sway crane. The technical solution disclosed in the patent can reduce the swing of the crane to a certain extent, but it is cumbersome to operate when used in conjunction with a tractor. Therefore, it is necessary to design an electric hoist for a gantry crane that can reduce the swing of the crane and facilitate installation and operation. Utility Model Content

[0003] The utility model aims to provide an electric hoist for a gantry crane, which can reduce the swing of the crane and is easy to install and operate.

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

[0005] An electric hoist for a gantry crane comprises an electric hoist body, the electric hoist body comprises an outer shell, a drum is rotatably connected in the outer shell, one end of the drum is driven by a motor, a steel wire rope is wound on the drum, a hook assembly is installed on the protruding end of the steel wire rope, a top plate is provided on the top of the outer shell, the bottom of the top plate is fitted with the top of the outer shell, symmetrical plug-in columns are fixed on the bottom of the top plate, and plug-in holes corresponding to the plug-in columns are provided on the top of the outer shell, two spaced first threaded rods are fixed on the ends of the top plate, a side plate that can move left and right is provided on the first threaded rod, the inner side of the side plate is fitted with the end of the electric hoist body, the outer end of the first threaded rod is threadedly connected with a first locking nut, and the first locking nut is tightened on the outer side of the side plate; a vertical telescopic sleeve is fixed on the outer side of the side plate, a horizontal telescopic device is fixed on the bottom of the telescopic sleeve, a mounting frame is fixed on the inner end of the telescopic device, and the mounting frame is detachably fixed to the hook assembly.

[0006] A bottom plate is provided at the bottom of both ends of the electric hoist body, the top of the bottom plate is in contact with the bottom of the electric hoist body, two spaced second threaded rods are fixed at the outer end of the bottom plate, and vertical strip holes corresponding to the second threaded rods are provided on the side plate. The outer end of the second threaded rod extends outside the strip hole and is threadedly connected with a second locking nut, and the second locking nut is tightened against the outer side of the side plate.

[0007] The telescopic device comprises a fixing plate fixed on the bottom of the telescopic sleeve, a horizontal sliding hole is arranged on the fixing plate, a horizontal sliding plate is slidably connected in the sliding hole, and the inner end of the sliding plate is fixed on the back of the mounting frame.

[0008] The hook assembly includes a horizontal mounting shaft, a hook is installed in the middle of the mounting shaft, pulleys cooperating with the wire rope are rotatably connected at both ends of the mounting shaft, a pulley shell is provided outside the pulley, the end of the mounting shaft is fixedly connected to the pulley shell, and the mounting frame is detachably fixed on the outside of the pulley shell.

[0009] The mounting frame includes an L-shaped mounting plate, the inner end of the sliding plate is fixed to the back side of the mounting plate, the bottom of the mounting plate is fitted with the bottom of the pulley housing, a third threaded rod is fixed to the top of the mounting plate, a movable plate capable of moving up and down is provided on the third threaded rod, the bottom of the movable plate is fitted with the top of the pulley housing, a third locking nut is threadedly connected to the third threaded rod, and the third locking nut is tightened against the top of the movable plate.

[0010] The utility model can reduce the swing of the crane and is also convenient for installation and operation. A top plate is provided on the top of the shell, and the bottom of the top plate is fitted with the top of the shell. A symmetrical plug-in column is fixed to the bottom of the top plate. A plug-in hole corresponding to the plug-in column is provided on the top of the shell. The plug-in column is inserted into the corresponding plug-in hole to realize the connection between the top plate and the shell. Two spaced first threaded rods are fixed on the ends of the top plate. The first threaded rod is provided with a side plate that can move left and right, so that the position of the side plate can be adjusted according to the length of the electric hoist body. The inner side of the side plate is fitted with the end of the electric hoist body. The outer end of the first threaded rod is threadedly connected with a first locking nut, and the first locking nut is pressed against the outer side of the side plate, so that the two side plates are stably arranged at the two ends of the electric hoist body. A vertical telescopic sleeve is fixed on the outer side of the side plate, and a horizontal telescopic device is fixed on the bottom of the telescopic sleeve. A mounting frame is fixed on the inner end of the telescopic device. The mounting frame is detachably fixed on the hook assembly, so that installation and disassembly are convenient. The telescopic sleeve can be telescoped with the lifting and lowering of the hook assembly, and the telescopic device can be telescoped with the left and right movement of the hook assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a partial structural schematic diagram of the utility model;

[0013] Figure 3 A schematic diagram of the structure of the mounting frame. DETAILED DESCRIPTION

[0014] like Figure 1-Figure 3As shown, an electric hoist of a gantry crane includes an electric hoist body, which includes a shell 1. A drum 12 is rotatably connected in the shell 1. One end of the drum 12 is driven by a motor 7. The motor 7 is used to drive the drum 12 to rotate. A wire rope 11 is wound around the drum 12. A hook 17 assembly is installed at the protruding end of the wire rope 11 for hooking goods. A top plate 2 is provided on the top of the shell 1. The bottom of the top plate 2 is in contact with the top of the shell 1. Symmetrical plug-in columns 22 are fixed to the bottom of the top plate 2. Plug-in holes corresponding to the plug-in columns 22 are provided on the top of the shell 1. The plug-in columns 22 are inserted into the corresponding plug-in holes to realize the connection between the top plate 2 and the shell 1. Two spaced first threaded rods 4 are fixed at the ends of the top plate 2. The first threaded rods 4 are provided with side plates 3 that can move left and right, so that the position of the side plates 3 can be adjusted according to the length of the electric hoist body. The inner side of the side plate 3 is in contact with the end of the electric hoist body. The outer end of the first threaded rod 4 is threadedly connected with a first locking nut 5, and the first locking nut 5 is tightened on the outer side of the side plate 3, so that the two side plates 3 are stably arranged at the two ends of the electric hoist body; a vertical telescopic sleeve 6 is fixed on the outer side of the side plate 3, and the telescopic sleeve 6 is arranged between the two first threaded rods 4. The fixed end of the telescopic sleeve 6 is fixed on the outer side of the side plate 3, which does not affect the lifting height of the electric hoist. The telescopic sleeve 6 adopts an existing conventional structure, such as the technical scheme disclosed in the patent with patent publication number CN205025886U and the patent name of a multi-section telescopic sleeve 6 device. A horizontal telescopic device is fixed at the bottom of the telescopic sleeve 6, and a mounting frame is fixed at the inner end of the telescopic device. The mounting frame is detachably fixed on the hook 17 assembly for easy installation and disassembly. The telescopic sleeve 6 can be telescoped with the lifting and lowering of the hook 17 assembly, and the telescopic device can be telescoped with the left and right movement of the hook 17 assembly.

[0015] A bottom plate 10 is provided at the bottom of both ends of the electric hoist body, and the top of the bottom plate 10 is in contact with the bottom of the electric hoist body. Two spaced second threaded rods 8 are fixed to the outer ends of the bottom plate 10, and the telescopic sleeve 6 is arranged between the two second threaded rods 8. A vertical strip hole corresponding to the second threaded rod 8 is provided on the side plate 3. The outer end of the second threaded rod 8 extends outside the strip hole and is threadedly connected with a second locking nut 9. The second locking nut 9 is tightened against the outer side of the side plate 3 to play a locking role. The second threaded rod 8 can move up and down along the strip hole, which is convenient for adjusting the position of the bottom plate 10 according to the specifications of the electric hoist body so that the top of the bottom plate 10 is in contact with the bottom of the electric hoist body.

[0016] The telescopic device includes a fixed plate 13 fixed to the bottom of the telescopic sleeve 6. The fixed plate 13 is provided with a horizontal sliding hole. A horizontal sliding plate 14 is slidably connected in the sliding hole. The inner end of the sliding plate 14 is fixed to the back of the mounting frame. The sliding plate 14 can slide left and right along the sliding hole.

[0017] The hook 17 assembly includes a horizontal mounting shaft 18, a hook 17 is installed in the middle of the mounting shaft 18 for hooking cargo, both ends of the mounting shaft 18 are rotatably connected with pulleys that cooperate with the wire rope 11, a pulley shell 16 is provided outside the pulley, the end of the mounting shaft 18 is fixedly connected to the pulley shell 16, and the mounting frame is detachably fixed to the outside of the pulley shell 16.

[0018] The mounting frame includes an L-shaped mounting plate 15, the inner end of the sliding plate 14 is fixed to the back side of the mounting plate 15, the bottom of the mounting plate 15 is fitted with the bottom of the pulley housing 16, a third threaded rod 21 is fixed to the top of the mounting plate 15, a movable plate 20 capable of moving up and down is provided on the third threaded rod 21, the bottom of the movable plate 20 is fitted with the top of the pulley housing 16, a third locking nut 20 is threadedly connected to the third threaded rod 21, and the third locking nut 20 is tightened on the top of the movable plate 20, so that the mounting frame can be detachably fixed to the pulley housing 16.

[0019] Before use, the electric hoist is installed on the crane. When in use, the cargo hook is hung on the hook 17, the motor 7 of the electric hoist is powered on, and the motor 7 drives the drum 12 to rotate to realize the winding of the wire rope 11. The telescopic sleeve 6 can be extended and retracted with the lifting and lowering of the hook 17 component, which can reduce the swing of the crane. The telescopic device can be extended and retracted with the left and right movement of the hook 17 component, that is, the sliding plate 14 slides left and right along the sliding hole to adapt to the operation of the electric hoist.

[0020] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. An electric hoist for a gantry crane, comprising an electric hoist body, the electric hoist body comprising a shell, a drum rotatably connected in the shell, a motor driven at one end of the drum, a steel wire rope wound on the drum, a hook assembly installed at the protruding end of the steel wire rope, characterized in that: A top plate is provided on the top of the shell, and the bottom of the top plate is fitted with the top of the shell, and symmetrical plug-in columns are fixed on the bottom of the top plate. A plug-in hole corresponding to the plug-in column is provided on the top of the shell, and two spaced first threaded rods are fixed at the ends of the top plate. The first threaded rod is provided with a side plate that can move left and right, and the inner side of the side plate is fitted with the end of the electric hoist body. The outer end of the first threaded rod is threadedly connected with a first locking nut, and the first locking nut is tightened against the outer side of the side plate; a vertical telescopic sleeve is fixed to the outer side of the side plate, and a horizontal telescopic device is fixed to the bottom of the telescopic sleeve, and a mounting frame is fixed to the inner end of the telescopic device, and the mounting frame is detachably fixed to the hook assembly.

2. The electric hoist of a gantry crane according to claim 1, characterized in that: A bottom plate is provided at the bottom of both ends of the electric hoist body, the top of the bottom plate is in contact with the bottom of the electric hoist body, two spaced second threaded rods are fixed at the outer end of the bottom plate, and vertical strip holes corresponding to the second threaded rods are provided on the side plate. The outer end of the second threaded rod extends outside the strip hole and is threadedly connected with a second locking nut, and the second locking nut is tightened against the outer side of the side plate.

3. The electric hoist for a gantry crane according to claim 1, characterized in that: The telescopic device comprises a fixing plate fixed on the bottom of the telescopic sleeve, a horizontal sliding hole is arranged on the fixing plate, a horizontal sliding plate is slidably connected in the sliding hole, and the inner end of the sliding plate is fixed on the back of the mounting frame.

4. The electric hoist for a gantry crane as claimed in claim 3, characterized in that: The hook assembly includes a horizontal mounting shaft, a hook is installed in the middle of the mounting shaft, pulleys cooperating with the wire rope are rotatably connected at both ends of the mounting shaft, a pulley shell is provided outside the pulley, the end of the mounting shaft is fixedly connected to the pulley shell, and the mounting frame is detachably fixed on the outside of the pulley shell.

5. The electric hoist of a gantry crane as claimed in claim 4, characterized in that: The mounting frame includes an L-shaped mounting plate, the inner end of the sliding plate is fixed to the back side of the mounting plate, the bottom of the mounting plate is fitted with the bottom of the pulley housing, a third threaded rod is fixed to the top of the mounting plate, a movable plate capable of moving up and down is provided on the third threaded rod, the bottom of the movable plate is fitted with the top of the pulley housing, a third locking nut is threadedly connected to the third threaded rod, and the third locking nut is tightened against the top of the movable plate.

Images