CN215326550U

CN215326550U - Special crane for offshore wind power

Info

Publication number: CN215326550U
Application number: CN202121420326.1U
Authority: CN
Inventors: 李毅光; 张伟
Original assignee: Beijing Ruidian Technology Co ltd
Current assignee: Beijing Ruidian Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-28
Anticipated expiration: 2031-06-21

Abstract

A crane special for offshore wind power comprises a base, a frame, a swing mechanism, a hoisting assembly and a protective member; the machine frame comprises a main rotating seat, a supporting rod and a crane boom, wherein the crane boom is arranged on the main rotating seat, the supporting rod is obliquely arranged between the main rotating seat and the crane boom, the crane boom is in a totally-enclosed hollow type, and an access door is arranged behind the tail of the crane boom; the slewing mechanism is a worm and gear slewing support speed reducer with a reverse self-locking function, and is arranged between the base and a main rotating seat of the rack, and a rotary driving member is arranged on the side of the speed reducer; the hoisting component comprises a speed reducing motor, a winch roller, a lifting hook component and a steel wire rope, wherein the winch roller is arranged in front of the speed reducing motor and is arranged at the tail part of the crane boom together, the lifting hook component is arranged at the top end of the crane boom and is formed by arranging a lifting hook below a conical head cylinder barrel, and the steel wire rope connecting the lifting hook component and the winch roller is arranged in the crane boom; the machine is designed aiming at the offshore working environment, and can effectively cope with high salt fog, high temperature, high wind speed and the like; the marine operation, disassembly and assembly and maintenance are facilitated.

Description

Special crane for offshore wind power

Technical Field

The utility model belongs to the technical field of hoisting equipment, and particularly relates to hoisting equipment for supplying supplies for offshore wind power operation maintenance, namely a crane special for offshore wind power.

Background

With the continuous development of wind power generation industry at home and abroad, the wind power operation and maintenance form great market demands. When the offshore wind turbine generator is in operation and maintenance, supplies on a supply ship are lifted to a wind turbine tower platform from the ship and then are transported to each maintenance part by hoisting equipment inside the tower. Because the offshore crane needs to be capable of effectively dealing with offshore working environments such as high salt fog, high temperature and high wind speed, the traditional land crane equipment is difficult to meet the use requirement, or the large-tonnage crane is used for degrading, so that the user cost is increased, a large number of tower barrel platforms are occupied, and inconvenience is caused to the operation and maintenance of the fan.

Disclosure of Invention

In view of the current situation, the utility model aims to provide a crane special for offshore wind power, which can effectively deal with offshore working environments such as high salt spray, high temperature, high wind speed and the like, and has the functions of material lifting and descending, automatic power-off braking, manual brake release, manual or motor-driven boom rotation, hook top prevention, roller rope falling prevention, overload protection and the like.

In order to achieve the above object, the present invention provides a technical solution: a crane special for offshore wind power comprises a base, a frame, a swing mechanism, a hoisting assembly and a protective member;

the base is cylindrical and is arranged on the base of the wind power tower drum platform;

the frame comprises a main rotating seat, a supporting rod and a crane boom, wherein the crane boom is arranged on the main rotating seat, the supporting rod is obliquely arranged between the main rotating seat and the crane boom, and the main rotating seat, the supporting rod and the crane boom are connected into a triangular stable framework by a pin shaft; the crane boom is of a totally-enclosed hollow type, and an access door is arranged behind the tail of the crane boom;

the supporting rod can also be a hydraulic oil cylinder or an electric push rod;

the slewing mechanism is a worm and gear slewing support speed reducer with a reverse self-locking function, and is arranged between the base and a main rotating seat of the rack, and a rotary driving member is arranged on the side of the speed reducer;

the rotary driving component can be a handle or a hydraulic or electric motor;

the hoisting assembly comprises a speed reducing motor, a winch drum, a lifting hook assembly and a steel wire rope, wherein the winch drum is arranged in front of the speed reducing motor and is arranged at the tail part of the crane boom together, the lifting hook assembly is arranged at the top end of the crane boom and is formed by arranging a lifting hook below a conical head cylinder barrel, and the steel wire rope connecting the lifting hook assembly and the winch drum is arranged in the crane boom;

the protection component comprises a lifting height limiter, an anti-overwinding switch, a sliding block, a spring, a hook head protective cover and a motor ventilation protective cover; the lifting height limiter is arranged on a winch roller, the overwinding prevention switch, the sliding block and the spring are arranged at the front end of the crane boom from top to bottom, the hook head protective cover is arranged at the front end of the crane boom and above the lifting hook assembly, and the motor ventilation protective cover is provided with a bottom door and a side door at the side of the speed reduction motor;

and the exposed surfaces of the crane are coated with anticorrosive paint or anticorrosive paint.

The utility model is characterized in that: the design is designed aiming at the offshore working environment, 1, the full-corrosion-resistant coating and the full-closed stable structure are provided, the ventilation and the heat dissipation can be realized, and the high salt fog, the high temperature, the high wind speed and the like can be effectively dealt with; 2. the brake can be released manually after the power is cut off and the brake is automatically braked; 3. the suspension arm can rotate; 4. the lifting hook has a top impact prevention function; 5. the roller is prevented from rope falling and is subjected to overload protection; 6. is suitable for the marine environment with short-term use and long-term parking. The machine adopts a split combination design, and is convenient to disassemble, assemble and maintain during offshore operation.

Drawings

Fig. 1 is a left side perspective view of the present invention.

Fig. 2 is a right side perspective view of the present invention.

Fig. 3 is a left side perspective view of the present invention with the shield removed.

Fig. 4 is an enlarged and cut-away view of a portion of the present invention.

FIG. 5 is a view of the service door opening teaching of the present invention.

FIG. 6 is a schematic view of a heat dissipation door of the present invention.

FIG. 7 is a schematic diagram of the present invention applied to an offshore wind turbine tower platform.

FIG. 8 is a schematic enlarged view of a portion of the offshore wind turbine tower platform application of the present invention.

In the figure: 1. the crane comprises a base, 2, a rotating mechanism, 2.1, a worm gear and worm rotating support speed reducer, 2.2, a rotating driving component, 3, a main rotating seat, 4, a supporting rod, 5, a crane boom, 5.1, an access door, 6, a speed reduction motor, 7, a winch drum, 8, a lifting height limiter, 9, an anti-overwinding switch, 10, a sliding block, 11, a spring, 12, a hook component, 13, a steel wire rope, 14, a hook head shield, 15, a motor ventilation shield, 15.1 bottom door, 15.2, a side door, 16 and a pin shaft.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 8, the utility model provides a technical scheme, and a crane special for offshore wind power comprises a base 1, a frame, a swing mechanism 2, a hoisting assembly and a protective member;

the frame comprises a main rotating seat 3, a supporting rod 4 and a crane boom 5, wherein the crane boom is arranged on the main rotating seat, the supporting rod is obliquely arranged between the main rotating seat and the crane boom, and the main rotating seat, the supporting rod and the crane boom are connected into a triangular stable framework by a pin shaft 16; the crane boom is of a totally-enclosed hollow type, and an access door 5.1 is arranged behind the tail of the crane boom;

the slewing mechanism is a worm gear slewing support speed reducer 2.1 with a reverse self-locking function, and is arranged between the base and a main rotating seat of the machine frame, and a rotary driving component 2.2 is arranged on the side of the speed reducer;

the rotary driving component is a handle and can also be a hydraulic or electric motor;

the hoisting component comprises a speed reducing motor 6, a winch drum 7, a lifting hook component 12 and a steel wire rope 13, wherein the winch drum is arranged in front of the speed reducing motor and is arranged at the tail part of the cargo boom together, the lifting hook component is arranged at the top end of the cargo boom and consists of a lifting hook arranged below a conical head cylinder barrel, and the steel wire rope connecting the lifting hook component and the winch drum is arranged in the cargo boom; the lifting hook component is arranged below the hook head shield;

the protective component comprises a lifting height limiter 8, an anti-overwinding switch 9, a slider 10, a spring 11, a hook head shield 14 and a motor ventilation shield 15; the lifting height limiter is arranged on a winch roller, the overwinding prevention switch, the sliding block and the spring are arranged at the front end of the crane boom from top to bottom, the hook head protective cover is arranged at the front end of the crane boom and above the hook assembly, and the motor ventilation protective cover is provided with a bottom door 15.1 and a side door 15.2 at the side of the speed reducing motor;

The slewing mechanism 2 is a worm gear slewing support speed reducer 2.1 with a reverse rotation self-locking function, and the speed reducer can be rotationally driven by a handle 2.2. The handle 2.2 may be replaced by a hydraulic or electric motor, if necessary.

The support bar 4 mainly serves for connection and support. When required, the crane can be replaced by a hydraulic oil cylinder or an electric push rod to realize the amplitude variation action of the crane arm 5;

the crane boom 5 is a totally-enclosed crane boom, and the winch drum 7 and the steel wire rope 13 are both arranged inside the crane boom 5 to enhance the protection grade of components. The crane boom 5 is provided with an access door 5.1, and the maintenance and inspection of the winch drum 7 in daily life can be carried out by opening the access door 5.1 (see figure 5);

the motor ventilation shield 15 is connected with the crane boom 5 to form a closed space to protect the speed reduction motor 6, when the ambient temperature reaches a certain degree and heat dissipation is required, the bottom door 15.1 and the side door 15.2 of the motor ventilation shield 15 can be opened temporarily to form air convection, so that the speed reduction motor 6 can be effectively dissipated, and the whole machine can be effectively improved to adapt to higher ocean ambient temperature, as shown in fig. 6;

when the hook assembly 12 lifts a heavy object upwards, the top conical block touches the sliding block 10 and drives the sliding block 10 to move upwards, at the moment, the spring 11 is pressed, when the spring 11 is compressed to a certain degree, the overwinding prevention switch 9 is triggered, at the moment, the system is powered off, the speed reduction motor 6 and the winch roller 7 stop moving, and the braking state is kept. At this moment, the hook component 12 keeps a certain tension force of the steel wire rope 13 due to the downward pressure of the spring, the hook component 12 is prevented from swinging back and forth in the transportation or parking process, the function can also prevent the steel wire rope wound on the winch drum 7 from being fluffy, and therefore the pressure loss of the steel wire rope caused by the stress after the steel wire rope is fluffy is avoided, the service life of the steel wire rope is effectively prolonged, and the drawing in fig. 4 shows. The hoisting height limiter 8 can detect the number of turns of the steel wire rope released by the winch drum 7, and when the preset number of turns is reached, the speed reducing motor 6 is powered off, and the braking state is recovered.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the utility model may be made by those skilled in the art within the spirit and scope of the utility model, and such modifications and equivalents should also be considered as falling within the scope of the utility model.

Claims

1. The utility model provides a special hoist of offshore wind power which characterized by: comprises a base, a frame, a swing mechanism, a hoisting assembly and a protective member;

the hoisting component comprises a speed reducing motor, a winch drum, a lifting hook component and a steel wire rope, the winch drum is arranged in front of the speed reducing motor and is arranged at the tail part of the crane boom together, the lifting hook component is arranged at the top end of the crane boom and is formed by arranging a lifting hook below a conical head cylinder barrel, and the steel wire rope connecting the lifting hook component and the winch drum is arranged in the crane boom;

2. The crane special for offshore wind power as claimed in claim 1, wherein: the support rod can also be a hydraulic oil cylinder or an electric push rod.

3. The crane special for offshore wind power as claimed in claim 1, wherein: the rotary driving component is a handle and can also be a hydraulic or electric motor.