An electric hoist for European crane

Abstract

The utility model provides an electric hoist for a European crane, comprising an upper connecting frame and a sling; the upper connecting frame comprises two sets of mounting plates arranged opposite to each other, the lower sides of the two sets of mounting plates are connected by a plurality of horizontal columns; a plurality of running wheels are arranged on the upper sides of the two sets of mounting plates, a driving motor is arranged on the side of one set of mounting plates, the output end of the driving motor is transmission-connected with the running wheels, and a lifting drum is arranged on the side of the other set of mounting plates; the sling comprises a hook and a first pulley block and a second pulley block arranged on the upper side of the hook; a third pulley block is arranged on the lower side of the upper connecting frame, and the steel wire rope led out of the lifting drum is wound around the pulleys of the first pulley block, the third pulley block and the second pulley block in sequence. The electric hoist of the European crane is convenient for the steel wire rope of the single drum structure to cooperate with the two pulleys of the sling by arranging the third pulley block on the lower side of the upper connecting frame, thereby effectively improving the stability of the lifting process.

Description

Technical Field

[0001] The utility model relates to a lifting device, in particular to an electric hoist of a European-style crane. Background Art

[0002] The concept of European cranes was formed in the industry in recent years. The purpose is to distinguish them from the so-called domestic, Soviet (Soviet) and traditional cranes in the past. They are characterized by light weight, compact structure and low energy consumption. European cranes mainly include: bridge cranes, gantry cranes, cantilever cranes, flexible beam cranes, explosion-proof cranes and other industrial cranes, and electric hoists are the commonly used lifting mechanisms of European cranes.

[0003] At present, there are many types of electric hoists in the prior art, for example, a double-drum lifting electric hoist disclosed in Chinese patent CN222498423U, an electric hoist with a limit function disclosed in Chinese patent CN222476025U, etc. These electric hoists either use a single drum, and the wire rope is connected to a pulley provided on the sling, or use a double drum and a double pulley sling. However, the stability of the single drum lifting process is relatively poor, and the double drum structure increases the dead weight and equipment cost of the electric hoist.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0005] The utility model aims to provide an electric hoist for a European crane in view of the deficiencies in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An electric hoist for a European crane comprises an upper connecting frame and a sling; the upper connecting frame comprises two sets of mounting plates arranged opposite to each other, and the lower sides of the two sets of mounting plates are connected by a plurality of horizontal columns; a plurality of traveling wheels are arranged on the upper sides of the two sets of mounting plates, a driving motor is arranged on the side of one set of mounting plates, and the output end of the driving motor is transmission-connected with the traveling wheels, and a lifting drum is arranged on the side of the other set of mounting plates; the sling comprises a hook and a first pulley block and a second pulley block arranged on the upper side of the hook; a third pulley block is arranged on the lower side of the upper connecting frame, and a steel wire rope led out of the lifting drum is wound around the pulleys of the first pulley block, the third pulley block and the second pulley block in sequence.

[0008] The mounting plate equipped with the driving motor is the first mounting plate, the mounting plate equipped with the lifting drum is the second mounting plate, and the third pulley block is hinged to the lower side of the first mounting plate.

[0009] The third pulley block comprises a rectangular shell, the lower side of which is provided with an inverted arc groove corresponding to the pulley, the bottom surface of the arc groove is open, the pulley is installed in the arc groove and is rotatably connected with the arc groove.

[0010] Two groups of connecting ears are arranged on the lower side of the first mounting plate, and the rectangular shell is located in the gap between the two groups of connecting ears and is rotatably connected with the two groups of connecting ears.

[0011] Two groups of walking wheels are respectively arranged on the upper sides of the two groups of mounting plates, and the walking wheels are rotatably connected to the mounting plates through rotating shafts; first transmission gears are respectively arranged on the two rotating shafts located on the first mounting plate, and a transmission shaft is arranged in the gap between the two first transmission gears, and a second transmission gear is arranged on the transmission shaft, and the second transmission gear is meshed with the two first transmission gears, and the transmission shaft is transmission-connected to the output end of the driving motor.

[0012] The lifting drum comprises a drum shell, a reel arranged in the drum shell and a drum motor driving the reel to rotate. A lateral opening is arranged on one side of the drum shell close to the second mounting plate, and a steel wire rope is led out from the lateral opening.

[0013] A plurality of fixing plates are arranged on the side of the drum shell, the fixing plates are fixedly connected to the second mounting plate, a fixing seat is arranged on the bottom of the drum shell, and the end of the steel wire rope is fixedly connected to the fixing seat.

[0014] Compared with the prior art, the utility model has the beneficial effect that the utility model provides an electric hoist of a European crane, which is convenient for the steel wire rope of the single drum structure to cooperate with the two sets of pulleys of the sling by arranging the third pulley group on the lower side of the upper connecting frame, and effectively improves the stability of the lifting process. In addition, the third pulley group is hinged to the lower side of the upper connecting frame so as to adjust the angle according to the position of the sling to prevent the steel wire rope from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram (I) of the utility model.

[0016] Figure 2 It is a structural schematic diagram (II) of the utility model.

[0017] In the figure: 1. first mounting plate; 2. second mounting plate; 3. driving motor; 4. lifting drum; 5. traveling wheel; 6. first transmission gear; 7. second transmission gear; 8. first pulley block; 9. second pulley block; 10. third pulley block. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0019] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. "Installed", "provided with", "connected", etc. can adopt conventional means in the prior art, such as: integral setting, snap-on installation, welding connection, adhesive connection, bolt connection, etc. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances, and suitable connection, setting or installation methods can be selected in the prior art.

[0020] like Figure 1-2 As shown, an electric hoist of a European crane includes an upper connecting frame and a sling; the upper connecting frame includes two sets of mounting plates arranged opposite to each other, and the lower sides of the two sets of mounting plates are connected by a plurality of horizontal columns; a plurality of traveling wheels 5 are arranged on the upper sides of the two sets of mounting plates, a driving motor 3 is arranged on the side of one set of mounting plates, and the output end of the driving motor 3 is transmission-connected with the traveling wheels 5, and a lifting drum 4 is arranged on the side of the other set of mounting plates; the sling includes a hook and a first pulley block 8 and a second pulley block 9 arranged on the upper side of the hook; a third pulley block 10 is arranged on the lower side of the upper connecting frame, and the steel wire rope led out of the lifting drum 4 is wound around the pulleys of the first pulley block 8, the third pulley block 10 and the second pulley block 9 in sequence. Specifically, referring to the attached drawings, the first pulley block and the second pulley block are arranged symmetrically, and the rotation directions of the pulleys in the third pulley block and the first pulley block are not on the same plane (close to vertical). By arranging the third pulley group on the lower side of the upper connecting frame, it is convenient for the steel wire rope of the single drum structure to cooperate with the two sets of pulleys of the sling, effectively improving the stability of the lifting process.

[0021] In one embodiment, the mounting plate equipped with the driving motor 3 is the first mounting plate 1, the mounting plate equipped with the lifting drum 4 is the second mounting plate 2, and the third pulley group 10 is hinged to the lower side of the first mounting plate 1 so as to adjust the angle according to the position of the sling to prevent the wire rope from slipping.

[0022] In one embodiment, the third pulley block 10 includes a rectangular housing, and an inverted arc groove is provided on the lower side of the rectangular housing corresponding to the pulley, the bottom surface of the arc groove is open, and the pulley is installed in the arc groove and is rotatably connected to the arc groove. Specifically, the structures of the first pulley block and the second pulley block are basically the same, both including an arc housing and a pulley arranged in the arc housing, the top surface of the arc housing is open, the two arc housings are connected by a connecting frame, and the upper end of the hook is rotatably connected to the connecting frame.

[0023] In one embodiment, two groups of connecting ears are arranged on the lower side of the first mounting plate 1, and the rectangular housing is located in the gap between the two groups of connecting ears and is rotatably connected to the two groups of connecting ears.

[0024] In one embodiment, two groups of running wheels 5 are respectively arranged on the upper sides of the two groups of mounting plates, and the running wheels 5 are rotatably connected to the mounting plates through rotating shafts; first transmission gears 6 are respectively arranged on the two rotating shafts located on the first mounting plate 1, and a transmission shaft is arranged in the gap between the two first transmission gears 6, and a second transmission gear 7 is arranged on the transmission shaft, and the second transmission gear 7 is meshed with the two first transmission gears 6, and the transmission shaft is transmission-connected to the output end of the driving motor 3. During use, the driving motor drives the second transmission gear to rotate, thereby driving the first gear and the running wheels to rotate.

[0025] In one embodiment, the lifting drum 4 includes a drum housing, a reel disposed in the drum housing, and a drum motor for driving the reel to rotate, and a lateral opening is provided on one side of the drum housing close to the second mounting plate 2, and the wire rope is led out from the lateral opening. Specifically, the lateral opening extends to the lower side of the drum housing so that the wire rope cooperates with the pulley.

[0026] In one embodiment, a plurality of fixing plates are arranged on the side of the drum housing, and the fixing plates are fixedly connected to the second mounting plate 2 for assembly. A fixing seat is arranged at the bottom of the drum housing, and the end of the wire rope is fixedly connected to the fixing seat.

[0027] The above embodiments can be combined with each other.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. An electric hoist for a European crane, characterized in that: It includes an upper connecting frame and a sling; the upper connecting frame includes two sets of mounting plates arranged opposite to each other, and the lower sides of the two sets of mounting plates are connected by a plurality of horizontal columns; a plurality of walking wheels are arranged on the upper sides of the two sets of mounting plates, a driving motor is arranged on the side of one set of mounting plates, and the output end of the driving motor is transmission-connected to the walking wheels, and a lifting drum is arranged on the side of the other set of mounting plates; the sling includes a hook and a first pulley group and a second pulley group arranged on the upper side of the hook; a third pulley group is arranged on the lower side of the upper connecting frame, and the wire rope led out of the lifting drum is wound around the pulleys of the first pulley group, the third pulley group and the second pulley group in sequence.

2. The electric hoist of the European crane according to claim 1, characterized in that: The mounting plate equipped with the driving motor is the first mounting plate, the mounting plate equipped with the lifting drum is the second mounting plate, and the third pulley block is hinged to the lower side of the first mounting plate.

3. The electric hoist of the European crane according to claim 2, characterized in that: The third pulley block comprises a rectangular shell, the lower side of which is provided with an inverted arc groove corresponding to the pulley, the bottom surface of the arc groove is open, the pulley is installed in the arc groove and is rotatably connected with the arc groove.

4. The electric hoist of the European crane according to claim 3, characterized in that: Two groups of connecting ears are arranged on the lower side of the first mounting plate, and the rectangular shell is located in the gap between the two groups of connecting ears and is rotatably connected with the two groups of connecting ears.

5. The electric hoist of the European crane according to claim 4, characterized in that: Two groups of walking wheels are respectively arranged on the upper sides of the two groups of mounting plates, and the walking wheels are rotatably connected to the mounting plates through rotating shafts; first transmission gears are respectively arranged on the two rotating shafts located on the first mounting plate, and a transmission shaft is arranged in the gap between the two first transmission gears, and a second transmission gear is arranged on the transmission shaft, and the second transmission gear is meshed with the two first transmission gears, and the transmission shaft is transmission-connected to the output end of the driving motor.

6. The electric hoist of the European crane according to claim 5, characterized in that: The lifting drum comprises a drum shell, a reel arranged in the drum shell and a drum motor driving the reel to rotate. A lateral opening is arranged on one side of the drum shell close to the second mounting plate, and a steel wire rope is led out from the lateral opening.

7. The electric hoist of the European crane according to claim 6, characterized in that: A plurality of fixing plates are arranged on the side of the drum shell, the fixing plates are fixedly connected to the second mounting plate, a fixing seat is arranged on the bottom of the drum shell, and the end of the steel wire rope is fixedly connected to the fixing seat.

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