Bridge crane capable of preventing lifting appliance from inclining

Abstract

A bridge crane capable of preventing a lifting appliance from inclining comprises a bridge frame, an electric hoist capable of moving left and right is hung on the bridge frame and comprises a shell, two spaced installation plates are fixed to the top of the shell, a trolley walking mechanism is installed on the installation plates, a winding drum is rotationally connected into the shell, and a motor for driving the winding drum to rotate is fixed to the shell. A steel wire rope is wound on the winding drum, a lifting hook assembly is mounted on the steel wire rope, an L-shaped upper assembling plate is detachably fixed to the outer side of the mounting plate, a mounting hole is formed in the upper assembling plate, a telescopic sleeve is arranged at the mounting hole, a limiting plate is fixed to the top of the telescopic sleeve, and the bottom of the limiting plate is attached to the top of the upper assembling plate; the lifting hook assembly comprises two spaced connecting plates, a pulley assembly and a lifting hook are sequentially installed between the two connecting plates from top to bottom, lower assembling plates are detachably fixed to the front sides and the rear sides of the connecting plates, and the bottoms of the telescopic sleeves are fixed to the tops of the corresponding lower assembling plates. The lifting appliance can reduce the inclination condition of the lifting appliance.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and particularly relates to an anti-hook-tilting bridge crane. Background Technique

[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 and bridge cranes, which are widely used. Among them, a bridge crane is a lifting equipment that spans over workshops, warehouses, and yards for material lifting and is not hindered by ground equipment. A bridge crane generally includes a main girder, end beams are fixed at both ends of the main girder, and a trolley traveling mechanism is installed on the end beams to facilitate the longitudinal movement of the crane along the crane track. An electric hoist that can move left and right is provided on the main girder. A wire rope is wound on the electric hoist, and a hook is installed on the wire rope for lifting goods. However, during use, when the wire rope swings greatly due to improper operation or equipment failure, etc., it is easy to cause the hook to tilt, affecting the safety of lifting.

[0003] The technical solution disclosed in the patent publication number CN218754636U and the patent name "An anti-sway gantry crane" can reduce the swing of the wire rope to a certain extent. However, the wire rope not arranged in the anti-sway rod is still prone to swing. Therefore, it is necessary to design an anti-hook-tilting bridge crane that can reduce the tilting of the hook and improve the lifting stability of the crane. Content of the Utility Model

[0004] The purpose of the utility model is to provide an anti-hook-tilting bridge crane that can reduce the tilting of the hook and improve the lifting stability of the crane.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An anti-hook-tilting bridge crane includes a bridge frame, an electric hoist that can move left and right is suspended on the bridge frame. The electric hoist includes a housing, two spaced mounting plates are fixed on the top of the housing, a trolley traveling mechanism is installed on the mounting plates, a drum is rotatably connected in the housing, a motor for driving the drum to rotate is fixed on the housing, a wire rope is wound on the drum, a hook assembly is installed on the wire rope. An L-shaped upper assembly plate is detachably fixed on the outside of the mounting plate, an installation hole is provided on the upper assembly plate, a telescopic sleeve is provided at the installation hole, a limit plate is fixed on the top of the telescopic sleeve, and the bottom of the limit plate fits with the top of the upper assembly plate; the hook assembly includes two spaced connecting plates, a pulley assembly cooperating with the wire rope and a hook for hooking goods are sequentially installed between the two connecting plates from top to bottom. Lower assembly plates are detachably fixed on the front and rear sides of the connecting plates, and the bottom of the telescopic sleeve is fixed on the top of the corresponding lower assembly plate.

[0007] The inner end of the lower mounting plate is provided with a clamping groove corresponding to the connecting plate, and the connecting plate is clamped in the corresponding clamping groove; the inner ends of the two lower mounting plates are in contact, and the lower mounting plate is detachably fixed to the connecting plate by screws.

[0008] The upper mounting plate includes a vertical plate and a horizontal plate. The horizontal plate is provided with a mounting hole for cooperating with the telescopic sleeve, and the vertical plate is threadedly connected with a fixing bolt. The vertical plate is detachably and fixedly connected to the mounting plate by the fixing bolt.

[0009] A roller device is provided between the two mounting plates. The roller device includes a roller. The middle part of the roller is rotatably connected with a rotating shaft. The end of the rotating shaft is detachably fixed with a support plate. The mounting plate is provided with a mounting groove corresponding to the lower part of the support plate, and the support plate is provided with a threaded hole for cooperating with the fixing bolt.

[0010] The support plate is provided with a vertical hole corresponding to the rotating shaft, and the end of the rotating shaft extends outside the vertical hole and is threadedly connected with a locking nut.

[0011] Two spaced roller devices are provided between the two mounting plates.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] (1) An L-shaped upper mounting plate is detachably fixed to the outside of the mounting plate, and lower mounting plates can be detachably fixed to the front and rear sides of the connecting plate. A telescopic sleeve is provided between the upper mounting plate and the lower mounting plate, which can contract with the lifting and lowering of the hook assembly, can reduce the large swing of the steel wire rope, reduce the inclination of the lifting appliance, and improve the stability of the crane lifting.

[0014] (2) A limiting plate is fixed to the top of the telescopic sleeve, and the bottom of the limiting plate fits with the top of the upper mounting plate, playing a limiting role to prevent the telescopic sleeve from coming out of the mounting hole.

[0015] (3) The lower mounting plate is detachably fixed to the front and rear sides of the connecting plate, which is convenient for installation and disassembly. Description of the Drawings

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the hook assembly;

[0018] Figure 3 is a partial structural schematic diagram of the electric hoist, the roller device and the telescopic sleeve;

[0019] Figure 4 is a partial structural schematic diagram of the hook assembly and the telescopic sleeve;

[0020] Figure 5 is a structural schematic diagram of the lower mounting plate;

[0021] Figure 6 It is a structural schematic diagram of a roller device. Specific embodiments

[0022] As Figures 1-6 shown, a gantry crane for preventing the spreader from tilting includes a bridge. An electric hoist 5 capable of moving left and right is suspended on the bridge. The bridge includes a main beam 3. End beams 1 are fixed at both ends of the main beam 3. A trolley traveling mechanism 2 is provided on the end beam 1. The electric hoist 5 is suspended at the bottom of the main beam 3. A trolley track 4 facilitating its left and right movement is provided at the bottom of the main beam 3. This is the prior art and will not be elaborated here. The electric hoist 5 includes a housing 25. Two spaced mounting plates 7 are fixed at the top of the housing 25. There is a gap between the mounting plate 7 and the trolley track 4. A trolley traveling mechanism 11 is installed on the mounting plate 7. The trolley traveling mechanism 11 can move left and right along the trolley track 4. A drum is rotatably connected inside the housing 25. A motor for driving the drum to rotate is fixed on the housing 25. A steel wire rope 26 is wound around the drum. A hook 15 assembly is installed on the steel wire rope 26. An L-shaped upper fitting plate 6 is detachably fixed on the outside of the mounting plate 7. Mounting holes are provided on the upper fitting plate 6. A telescopic sleeve 8 is provided at the mounting holes. A limiting plate 9 is fixed at the top of the telescopic sleeve 8. The bottom of the limiting plate 9 fits against the top of the upper fitting plate 6 to play a limiting role. The hook 15 assembly includes two spaced connecting plates 13. A pulley assembly 12 cooperating with the steel wire rope 26 and a hook 15 for hooking goods are successively installed between the two connecting plates 13 from top to bottom. The pulley assembly 12 is installed between the two connecting plates 13 through a first pin shaft. The hook 15 is installed between the two connecting plates 13 through a second pin shaft. This is the prior art and will not be elaborated here. Lower fitting plates 14 can be detachably fixed on the front and rear sides of the connecting plate 13 for easy installation and disassembly. The bottom of the telescopic sleeve 8 is fixed on the top of the corresponding lower fitting plate 14.

[0023] A card slot 27 corresponding to the connecting plate 13 is provided at the inner end of the lower fitting plate 14. The connecting plate 13 is clamped in the corresponding card slot 27. The inner ends of the two lower fitting plates 14 are in contact. The lower fitting plate 14 is detachably fixed on the connecting plate 13 by screws for easy installation and disassembly.

[0024] The upper fitting plate 6 includes a vertical plate 23 and a horizontal plate 24. Mounting holes cooperating with the telescopic sleeve 8 are provided on the horizontal plate 24. A fixing bolt 16 is threadedly connected to the vertical plate 23. The vertical plate 23 is detachably fixedly connected to the mounting plate 7 through the fixing bolt 16 for easy installation and disassembly.

[0025] A roller device 10 is provided between two mounting plates 7, facilitating the stable operation of the trolley traveling mechanism 11 of the electric hoist 5 along the trolley track 4 and preventing derailment. The roller device 10 includes a roller 19 which can roll along the bottom of the trolley track 4. A rotating shaft 20 is rotatably connected to the middle of the roller 19. A support plate 21 is detachably fixed to the end of the rotating shaft 20. An installation groove corresponding to the lower part of the support plate 21 is provided on the mounting plate 7. A threaded hole 28 matching with the fixing bolt 16 is provided on the support plate 21. The fixing bolt 16 can detachably and fixedly connect the vertical plate 23, the support plate 21 and the mounting plate 7.

[0026] A vertical hole 29 corresponding to the rotating shaft 20 is provided on the support plate 21. The end of the rotating shaft 20 extends outside the vertical hole 29 and is threadedly connected with a locking nut 18. When installing the roller device 10, the rotating shaft 20 is in a lower position in the vertical hole 29, and there is a gap between the roller 19 and the bottom of the trolley track 4, which is convenient for installation. After the roller device 10 is installed in place, the lower part of the support plate 21 is arranged in the corresponding installation groove. The rotating shaft 20 is moved upward to make the roller 19 contact the bottom of the trolley track 4, and then the locking nut 18 is tightened to lock the positions of the rotating shaft 20 and the roller 19.

[0027] Two spaced roller devices 10 are provided between the two mounting plates 7, which can better play the role of preventing derailment.

[0028] During use, the goods are hooked on the hook 15. The electric hoist 5 is powered on to work. The motor corresponding to the drum works to drive the drum to rotate, realizing the retraction and release of the steel wire rope 26, driving the hook 15 assembly and the goods to lift and lower. The telescopic sleeve 8 expands and contracts with the lifting and lowering of the hook 15 assembly, which can reduce the large swing of the steel wire rope 26, reduce the tilting of the lifting appliance, and improve the lifting stability of the crane. When the trolley traveling mechanism drives the electric hoist 5 to run along the trolley track 4, the roller device 10 rolls along the bottom of the trolley track 4 to play the role of preventing derailment. The trolley traveling mechanism 2 drives the crane to longitudinally run along the crane track to transport the goods to the destination.

[0029] The telescopic sleeve 8 selects a conventional telescopic device, such as the structure in the technical solution disclosed in the patent with the publication number CN202480009U and the patent name "Telescopic Sleeve Wrench", or the structure in the technical solution disclosed in the patent with the publication number CN105904391A and the patent name "A Telescopic Sleeve Wrench".

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0031] The above embodiments are illustrative of the present utility model and not restrictive thereof. Any solution obtained by simply transforming the present utility model falls within the protection scope of the present utility model.

Claims

1. An anti-tilt bridge crane, comprising a bridge, an electric hoist capable of moving left and right is suspended on the bridge, the electric hoist comprises a shell, two spaced mounting plates are fixed on the top of the shell, a trolley travel mechanism is mounted on the mounting plate, a drum is rotatably connected in the shell, a motor for driving the drum to rotate is fixed on the shell, a steel wire rope is wound on the drum, a hook assembly is mounted on the steel wire rope, and the characteristics are: An L-shaped upper assembly plate is detachably fixed on the outer side of the mounting plate, the upper assembly plate is provided with a mounting hole, a telescopic sleeve is provided at the mounting hole, a limit plate is fixed to the top of the telescopic sleeve, and the bottom of the limit plate is in contact with the top of the upper assembly plate; the hook assembly includes two spaced connecting plates, and a pulley assembly cooperating with a steel wire rope and a hook for hooking goods are sequentially installed between the two connecting plates from top to bottom, and lower assembly plates are detachably fixed on the front and rear sides of the connecting plate, and the bottom of the telescopic sleeve is fixed to the top of the corresponding lower assembly plate.

2. The anti-sling tilt bridge crane according to claim 1, characterized in that: The inner end of the lower assembly plate is provided with a slot corresponding to the connecting plate, and the connecting plate is clamped in the corresponding slot; the inner ends of the two lower assembly plates are in contact, and the lower assembly plates are detachably fixed on the connecting plates by screws.

3. The anti-sling tilt bridge crane according to claim 1, characterized in that: The upper assembly plate includes a vertical plate and a horizontal plate. The horizontal plate is provided with a mounting hole matched with the telescopic sleeve. The vertical plate is threadedly connected with a fixing bolt. The vertical plate is detachably fixedly connected to the mounting plate through the fixing bolt.

4. The anti-sling tilt bridge crane according to claim 3, characterized in that: A roller device is provided between the two mounting plates, and the roller device includes a roller, the middle part of the roller is rotatably connected to a rotating shaft, the end of the rotating shaft is detachably fixed with a support plate, the mounting plate is provided with a mounting groove corresponding to the lower part of the support plate, and the support plate is provided with a threaded hole that cooperates with the fixing bolt.

5. The anti-sling tilt bridge crane according to claim 4, characterized in that: A vertical hole corresponding to the rotating shaft is arranged on the supporting plate, and the end of the rotating shaft extends out of the vertical hole and is threadedly connected with a locking nut.

6. The anti-sling tilt bridge crane according to claim 4, characterized in that: Two spaced roller devices are arranged between the two mounting plates.

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