CN116621053A

CN116621053A - Crane with crane body

Info

Publication number: CN116621053A
Application number: CN202310680093.6A
Authority: CN
Inventors: 赵波; 刘文升; 孟进军; 李云波
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2023-08-22

Abstract

The present disclosure provides a crane, comprising: the vehicle body comprises a vehicle frame, a turntable and an arm support, wherein the turntable is rotatably arranged on the vehicle frame around a vertical axis, and one end of the arm support is connected to the turntable; and the lateral wind-resistant device comprises two wind-resistant parts arranged at the left side and the right side of the arm support, each wind-resistant part comprises a first inhaul cable and an adjusting device, one end of the first inhaul cable is connected with the arm support, and the adjusting device is configured to adjust the included angle between the first inhaul cable and the arm support. The crane provided by the disclosure can meet the operation requirements of severe environments with windy and strong winds.

Description

Crane with crane body

Technical Field

The disclosure relates to the field of engineering machinery, and in particular relates to a crane.

Background

The wind energy resources of China are rich, and developing wind power is an important energy development strategy for adjusting energy structures and achieving emission reduction targets in China. In the years, the construction of fans is raised in China, the fans are increased continuously, and wind power plants also extend from the Huazhong plain to the western mountain area.

The fan mainly comprises a tower, a cabin and blades, and all the components of the fan have the characteristics of high height, large volume, large weight and the like. The assembly of the fan is mainly finished by a large-tonnage crawler crane at present.

Nacelle and blade assembly are the main difficulties in fan assembly construction, and crawler cranes need to hoist up to hundreds of tons of nacelle to hundred meters high altitude and then install on the tower. The crawler crane is required to be generally constructed in a windless or breeze environment so as to ensure the construction safety. In order to improve the construction efficiency, the crawler crane is not required to operate according to the crawler crane products, and is lifted illegally under severe conditions such as strong wind and the like, so that the whole machine is tilted, and huge economic loss is brought.

The construction of the fan for the crawler crane brings greater challenges along with popularization and application of the fan in the western mountain areas with a long-term severe wind and severe environment.

Disclosure of Invention

The purpose of the present disclosure is to provide a crane to adapt to the operation demands under severe environments of windy and strong winds.

The present disclosure provides a crane, comprising:

the vehicle body comprises a vehicle frame, a turntable and an arm support, wherein the turntable is rotatably arranged on the vehicle frame around a vertical axis, and one end of the arm support is connected to the turntable; and

the lateral wind-resistant device comprises two wind-resistant parts arranged on the left side and the right side of the arm support, each wind-resistant part comprises a first inhaul cable and an adjusting device, one end of the first inhaul cable is connected with the arm support, and the adjusting device is configured to adjust the included angle between the first inhaul cable and the arm support.

According to some embodiments of the disclosure, the first end of the first cable is connected with the arm support, the adjusting device is in driving connection with the second end of the first cable, and the adjusting device is configured to drive the second end of the first cable to approach or separate from the arm support along the left-right direction of the arm support so as to adjust an included angle between the first cable and the arm support.

According to some embodiments of the disclosure, the adjusting device comprises a telescopic driving device, a first end of the telescopic driving device in a length direction is hinged with the arm support, a second end of the telescopic driving device in a length direction is connected with the first guy cable, and the telescopic driving device is retractably arranged along a length direction of the telescopic driving device.

According to some embodiments of the disclosure, the telescopic driving device comprises a bracket and an oil cylinder, wherein a first end of the oil cylinder is hinged with the arm support, and two ends of the bracket in the length direction are respectively connected with a second end of the oil cylinder and a second end of the first inhaul cable.

In accordance with some embodiments of the present disclosure,

each wind-resistant part comprises a second inhaul cable;

the adjusting device comprises a first pulley, the first pulley is installed on the adjusting device, the second inhaul cable is wound on the first pulley, and two ends of the second inhaul cable are connected to the turntable.

According to some embodiments of the disclosure, each of the wind-resistant portions includes at least two of the first cables disposed side-by-side.

According to some embodiments of the disclosure, the vehicle body comprises a hook suspended on the boom, the crane comprises a hook swing limiting device configured to limit swing of the hook relative to the boom.

According to some embodiments of the present disclosure, the hook swing limiting device includes:

the guide component is arranged on the arm support; and

and the third inhaul cable is movably connected with the guide component along the length direction of the arm support, and the lifting hook swing limiting device is configured to apply a constraint force to the lifting hook through the third inhaul cable so as to limit the swinging of the lifting hook relative to the arm support.

the second pulley is arranged on the lifting hook; and

and the third inhaul cable passes through the guide part and respectively bypasses two second pulleys at two ends to be connected with the counterweight, and the counterweight is configured to tension the third inhaul cable to apply constraint force to the lifting hook.

According to some embodiments of the disclosure, the guiding component is a lifting wire rope of the crane, the lifting wire rope is configured to drive the lifting hook to ascend or descend, and the third guy rope passes through a space between the lifting wire rope and the arm support and is movably hung on the lifting wire rope.

According to some embodiments of the present disclosure, the crane further comprises a wind measuring device comprising a wind direction sensor configured to obtain wind direction information of the boom and/or a wind speed sensor configured to obtain wind speed information of the boom.

In accordance with some embodiments of the present disclosure,

the wind direction sensor is arranged at a wind direction measuring point at the top end of the arm support and is configured to acquire wind direction of the wind direction measuring point as wind direction information;

the wind speed sensors are arranged at wind speed measuring points on the arm support and are configured to acquire wind speed of the wind speed measuring points as wind speed information, and the wind speed sensors are distributed along the length direction of the arm support;

the crane further comprises a controller which is in signal connection with the wind direction sensor and the wind speed sensors, wherein the controller is configured to acquire wind loads born by the arm frame according to wind directions of the wind direction measuring points and wind speeds of the wind speed measuring points, and acquire corresponding hoisting performance parameters according to the wind loads, and the hoisting performance parameters comprise at least one of the following: the arm length, amplitude and rated lifting capacity of the crane.

According to some embodiments of the disclosure, the controller is configured to obtain the wind load according to the following relationship:

F _X ＝A ₁ KV ² _X1 C _f +A ₂ KV ² _X2 C _f + _…… +A _i KV ² _Xi C _f + _…… +A _n KV ² _Xn C _f ；

F _Y ＝A ₁ KV ² _Y1 C _f +A ₂ KV ² _Y2 C _f + _…… +A _i KV ² _Yi C _f + _…… +A _n KV ² _Yn C _f ；

wherein A is _i Representing the effective frontal area of the boom between the i-1 th wind speed measurement point and the i-th wind speed measurement point, a when i=1 _i Representing the effective windward area of the boom between the bottom end of the boom and the 1 st wind speed measuring point, K being a parameter related to the air density of the working environment of the crane, C _f The wind coefficient of the arm support along the wind direction of the wind direction measuring point is represented, theta represents the included angle between the wind direction of the wind direction measuring point and the horizontal direction, n represents the number of the wind speed measuring points, and V _i Wind speed, V, representing the i-th wind speed measurement point _Xi ＝V _i cosθ，V _Yi ＝V _i sinθ，F _X Representing the component of the wind load in the front-rear direction of the crane, F _Y Representing the component of the wind load in the left-right direction of the crane.

According to some embodiments of the present disclosure, the system further comprises an early warning device, the controller in signal connection with the early warning device and configured to: if the wind speed of any wind speed measuring point is larger than a preset value, the early warning device sends out wind speed alarm information and/or safety operation prompt information for prompting an operator of the crane to adjust the posture of the arm support.

According to some embodiments of the disclosure, the controller is configured to: and responding to the wind speed alarm information, and determining a safe operation area of the arm support according to the wind direction information and the wind speed information, wherein the wind load is smaller than a limit value in the safe operation area, and the wind load is larger than or equal to the limit value outside the safe operation area.

According to some embodiments of the disclosure, the controller is in signal connection with the turntable and is configured to: if the posture of the arm support is unchanged within the set time after the safety operation prompt information is sent, the turntable drives the arm support to rotate, so that the arm support is located in the safety operation area.

For the crane provided by the disclosure, when the arm support receives lateral wind load from the left side and the right side, the included angle between the corresponding first stay cable and the arm support can be adjusted through the adjusting devices of the two wind-resistant parts, so that the arm support receives acting force of the first stay cable, and the acting force has components along the left direction and the right direction of the arm support, so that the lateral wind load can be counteracted. Therefore, by arranging the lateral wind-resistant device, the lateral stability of the arm support of the crane in a strong wind environment can be improved, the capability of the whole crane for resisting lateral wind load is improved, the crane is beneficial to meeting the operation requirements of the crane in severe environments with multiple winds and strong winds, and the construction risk is reduced.

Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the present disclosure, and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a crane according to some embodiments of the disclosure.

Fig. 2 is a schematic diagram of a front view of the crane shown in fig. 1.

Fig. 3 is a schematic view of the wind-resistant part of the crane shown in fig. 1 in an unfolded state.

Fig. 4 is a schematic view showing a structure of the wind resistant part of the crane shown in fig. 1 in a retracted state.

Fig. 5 is a partially enlarged schematic structural view of a lateral wind resistance device of the crane shown in fig. 1.

Fig. 6 is a schematic structural view of the lateral wind-resistant device shown in fig. 5 at another view angle.

Fig. 7 is a schematic structural view of a traction device of the lateral wind resistance device shown in fig. 5.

Fig. 8 is a schematic view of the traction device shown in fig. 7 in another view.

Fig. 9 is a schematic structural view of a hook swing limiting device of a crane according to some embodiments of the disclosure.

Fig. 10 is a schematic structural view of a third cable and a counterweight of the hook swing limiting device shown in fig. 9.

Fig. 11 is a schematic diagram of a wind direction sensor and wind sensor distribution of a crane according to some embodiments of the disclosure.

Fig. 12 is a schematic view of wind loads experienced by a crane according to some embodiments of the disclosure.

Fig. 13 is a functional schematic of a hoist performance calculation module of a hoist in accordance with some embodiments of the present disclosure.

Fig. 14 is a functional schematic of a safety protection module of a crane according to some embodiments of the disclosure.

In fig. 1 to 12, each reference numeral represents:

1. a vehicle body; 11. a frame; 12. a turntable; 121. a turntable body; 122. a slewing drive device; 13. arm support; 14. a lifting hook; 15. a counterweight; 16. a crawler belt travelling mechanism; 171. an amplitude variation mechanism; 172. a luffing mast; 173. amplitude-variable inhaul cable; 181. lifting a hoisting mechanism; 182. lifting the steel wire rope; 19. a control room; 2. a wind power measuring device; 21. a wind direction sensor; 22. a wind speed sensor; 3. a lateral wind-resistant device; 31. a first cable; 32. an adjusting device; 321. a first pulley assembly; 3211. a first pulley; 3212. a rotating shaft; 322. a telescopic driving device; 3221. a bracket; 3222. an oil cylinder; 33. a second guy cable; 4. a controller; 5. a lifting hook swing limiting device; 51. a third guy cable; 52. a counterweight; 53. and a second pulley.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present disclosure, it should be understood that the use of terms such as "first," "second," etc. for defining components is merely for convenience in distinguishing corresponding components, and the terms are not meant to be construed as limiting the scope of the present disclosure unless otherwise indicated.

In the description of the present disclosure, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Referring to fig. 1-12, some embodiments of the present disclosure provide a crane comprising a vehicle body 1 and a lateral wind resistance device 3. The vehicle body 1 comprises a frame 11, a turntable 12 and a boom 13, wherein the turntable 12 is rotatably arranged on the frame 11 around a vertical axis, and one end of the boom 13 is connected to the turntable 12. The lateral wind-resistant device 3 comprises two wind-resistant parts arranged on the left side and the right side of the arm support 13, each wind-resistant part comprises a first stay rope 31 and an adjusting device 32, one end of the first stay rope 31 is connected with the arm support 13, and the adjusting device 32 is configured to adjust the included angle between the first stay rope 31 and the arm support 13.

Referring to fig. 1 and 2, optionally, the crane includes a hook 14, counterweight 15, crawler 16, luffing mechanism 171, luffing mast 172, luffing cable 173, hoisting mechanism 181, hoisting cable 182, and cab 19. The crawler travel mechanism 16 is used for complete machine travel. The amplitude changing mechanism 171 can enable the amplitude changing mast 172 to change amplitude, so that the arm support 13 is driven to change amplitude through the amplitude changing inhaul cable 173. The lifting hoisting mechanism 181 is arranged on the arm support 13, and drives the lifting hook 14 through the lifting steel wire rope 182 to realize lifting of the lifting hook 14.

For the crane provided by the embodiment of the disclosure, when the arm support receives lateral wind loads from the left side and the right side, the included angle between the corresponding first stay cable and the arm support can be adjusted through the adjusting devices of the two wind-resistant parts, so that the arm support receives acting force of the first stay cable, and the acting force has components along the left direction and the right direction of the arm support, so that the lateral wind loads can be offset. Therefore, by arranging the lateral wind-resistant device, the lateral stability of the arm support of the crane in a strong wind environment can be improved, the capability of the whole crane for resisting lateral wind load is improved, the crane is beneficial to meeting the operation requirements of the crane in severe environments with multiple winds and strong winds, and the construction risk is reduced.

In some embodiments, referring to fig. 2 to 8, a first end of the first cable 31 is connected to the boom 13, an adjusting device 32 is drivingly connected to a second end of the first cable 31, and the adjusting device 32 is configured to drive the second end of the first cable 31 to approach or separate from the boom 13 in a left-right direction of the boom 13, so as to adjust an included angle between the first cable 31 and the boom 13.

Referring to fig. 3, in a state of strong wind force, the adjusting device 32 may drive the second end of the first cable 31 to be far away from the arm support 13 along the left-right direction of the arm support 13, so that the included angle between the first cable 31 and the arm support 13 is increased, and the first cable 31 stretches and tightens to play a role in resisting lateral wind load, and the corresponding wind resisting part is in an unfolded state. Referring to fig. 4, in a windless or breeze state, the adjusting device 32 may drive the second end of the first cable 31 to approach the arm support 13 along the left-right direction of the arm support 13, so that the included angle between the first cable 31 and the arm support 13 is reduced, and the corresponding wind-resistant portion is in a retracted state, thereby reducing the space required for the crane rotation operation. In order to promote the structural stability of the lateral wind-resistant device 3, the adjustment device 32 may also be rod-shaped as a whole, considering that the adjustment device 32 itself is also subject to wind loads.

In some embodiments, referring to fig. 2 to 8, the adjusting device 32 includes a telescopic driving device 322, a first end of the telescopic driving device 322 in a length direction is hinged with the arm support 13, a second end of the telescopic driving device 322 in a length direction is connected with the first cable 31, and the telescopic driving device 322 is telescopically arranged along its length direction.

Based on the connection manner of the above embodiment, when the telescopic driving device 322 is extended or shortened, the telescopic driving device 322 can rotate around its own length direction, and the second end of the first cable 31 can approach or depart from the arm support 13 along the left-right direction of the arm support 13 along with the telescopic action of the telescopic driving device 322, so that the wind-resistant portion is in an extended state or a contracted state.

In some embodiments, referring to fig. 6 to 8, the telescopic driving device 322 includes a bracket 3221 and an oil cylinder 3222, a first end of the oil cylinder 3222 is hinged to the arm support 13, and two ends of the bracket 3221 in a length direction are respectively connected to a second end of the oil cylinder 3222 and a second end of the first cable 31.

In some embodiments, which are not shown, the support may also include a first support and a second support movably disposed on the first support, where one end of the first support is connected to the second end of the first cable, and one end of the second support is hinged to the arm support. The two ends of the oil cylinder are respectively connected with the first bracket and the second bracket.

In some embodiments, referring to fig. 2-6, each wind resistance includes a second cable 33. The adjusting device 32 includes a first pulley 3211, the first pulley 3211 is mounted on the adjusting device 32, and the second cable 33 is wound around the first pulley 3211, and both ends thereof are connected to the turntable 12.

Optionally, the adjusting device 32 includes a first pulley assembly 321, the first pulley assembly 321 includes a first pulley 3211 and a rotating shaft 3212, and the first pulley 3211 is rotatably mounted on the rotating shaft 3212 through the rotating shaft 3212. Both ends of the second cable 33 may be connected to the turntable 12 through a pin shaft.

When the wind-resistant part is in the unfolded state, the second inhaul cable 33 and the adjusting device 32 can form a triangle structure, the second inhaul cable 33 can play a supporting role, the stability of one end, connected with the first inhaul cable 31, of the adjusting device 32 is kept, the second inhaul cable 33 is wound on the first pulley 3211, and the adjusting device 32 can keep a certain flexibility, so that the first inhaul cable 31 can be reliably stretched and tensioned.

In some embodiments, each wind resistance includes at least two first cables 31 disposed side-by-side.

For example, referring to fig. 6, two first cables 31 may be disposed side by side in the front-rear direction of the boom 13. The plurality of first guys 31 can be used for counteracting the lateral wind load at the same time, so that the capability of the arm support for resisting the lateral wind load can be further enhanced.

Under the strong wind environment, the lifting hook of the crane can be influenced by wind load to swing, so that potential safety hazards are brought to hoisting operation.

To ameliorate the above problems, in some embodiments, the vehicle body 1 comprises a hook 14, the hook 14 being suspended from the boom 13, the crane comprising a hook swing limiter 5, the hook swing limiter 5 being configured to limit the swing of the hook 14 relative to the boom 13.

In some embodiments, referring to fig. 9 and 10, the hook swing limiting device 5 includes a guide member and a third cable 51. The guide member is mounted on the arm support 13. The third stay 51 is movably connected with the guide member along the length direction of the arm support 13, and the hook swing limiting device 5 is configured to apply a restraining force to the hook 14 through the third stay 51 to limit the swing of the hook 14 with respect to the arm support 13.

The guide member may be directly mounted on the arm rest 13, or indirectly mounted on the arm rest 13 through other members, as long as it is capable of satisfying the constraint that the third cable 51 can move up and down with the lifting of the hook 14 and provide the third cable 51 with the constraint that it can be tensioned in the horizontal direction or in the nearly horizontal direction.

If the lifting hook 14 and the articles lifted on the lifting hook 14 swing or have a tendency to swing under the action of wind force, the third inhaul cable 51 can apply constraint force to the lifting hook 14 to limit the swinging of the lifting hook 14, and the third inhaul cable 51 and the guide component are movably connected along the length direction of the arm support 13 and can move up and down along with the lifting of the lifting hook 14, so that the third inhaul cable 51 can always play a constraint role on the lifting hook 14 in the lifting operation process, and the potential safety hazard of the lifting operation can be reduced. In addition, the lifting hook swing limiting device in the form is simple in structure and high in reliability.

Referring to fig. 1, 9 and 10, an embodiment of the present disclosure further provides a crane including a vehicle body 1 and a hook swing limiting device 5. The vehicle body 1 comprises a frame 11, a rotary table 12, a cantilever crane 13 and a lifting hook 14, wherein the rotary table 12 is rotatably arranged on the frame 11 around a vertical axis, one end of the cantilever crane 13 is connected to the rotary table 12, and the lifting hook 14 is suspended on the cantilever crane 13. The hook swing limiting device 5 is configured to limit the swing of the hook 14 with respect to the boom 13, the hook swing limiting device 5 including a guide member and a third cable 51. The guide member is mounted on the arm support 13. The third cable 51 is movably connected with the guide member in the length direction of the boom 13 and with the hook 14, and the hook swing limiting device 5 is configured to limit the swing of the hook 14 with respect to the boom 13 by a pulling force applied to the hook 14 by the third cable 51.

The crane with the lifting hook swing limiting device has the advantages of the lifting hook swing limiting device.

In some embodiments, referring to fig. 1, 9 and 10, the hook swing limiting device 5 includes a second sheave 53 and a counterweight 52. The second pulley 53 is mounted on the hook 14. The third cable 51 is wound around the second pulleys 53, the third cable 51 passes through the guide member and both ends are connected to the weights 52 by bypassing the two second pulleys 53, respectively, and the weights 52 are configured to tension the third cable 51 to apply a restraining force to the hooks 14.

In the above embodiment, the third cable 51 is restrained between the guide member and the weight 52, the third cable 51 can provide the restraining force required to restrain the swing of the hook 14 based on the restraint of the guide member and the gravity action of the weight 52, and the second pulley 53 can change the direction of the third cable 51 to convert the gravity in the vertical direction into the pulling force in the horizontal direction, thereby satisfying the need to restrain the swing of the hook 14.

In some embodiments, referring to fig. 9 and 10, the guide member is a lifting wire rope 182 of the crane, the lifting wire rope 182 is configured to drive the hook 14 to rise or fall, and the third guy wire 51 passes through a space between the lifting wire rope 182 and the boom and is movably hung on the lifting wire rope 182.

The lifting steel wire rope 182 is connected with the lifting hoisting mechanism 181 through the movable pulley block arranged on the lifting hook 14 and the fixed pulley block arranged on the arm support 13, the lifting hoisting mechanism 181 drives the lifting hook 14 to ascend or descend through driving the lifting steel wire rope 182 to move, the lifting steel wire rope 182 can be in a tensioning state in the process, the third guy cable 51 hung on the lifting steel wire rope 182 is supported and guided, and the hanging position of the third guy cable 51 can move up and down along with the ascending or descending of the lifting hook 14, so that the third guy cable 51 can always play a constraint role on the lifting hook 14 in the lifting operation process.

In some embodiments, which are not shown, the guiding member may also be a slider or the like movably provided on the arm 13 along the length direction of the arm 13, and the third cable 51 is connected to the slider.

In some embodiments, the hook swing limiting device 5 may include the combination of the third cable 51, the second pulley 53, the counterweight 52, and the lifting wire 182 mentioned above.

To grasp the condition of the boom being subjected to wind load, in some embodiments, referring to fig. 11 and 12, the crane further comprises a wind measuring device 2, the wind measuring device 2 comprising a wind direction sensor 21 and/or a wind speed sensor 22, the wind direction sensor 21 being configured to obtain wind direction information of the boom 13, the wind speed sensor 22 being configured to obtain wind speed information of the boom 13.

In some embodiments, referring to fig. 13, a wind direction sensor 21 is provided at a wind direction measurement point at the top end of the boom 13 and configured to acquire a wind direction of the wind direction measurement point as wind direction information. The wind speed sensors 22 are disposed at wind speed measurement points on the boom 13 and configured to acquire wind speeds of the wind speed measurement points as wind speed information, and the plurality of wind speed sensors 22 are distributed along the length direction of the boom 13. The crane further comprises a controller 4, the controller 4 is in signal connection with the wind direction sensor 21 and the plurality of wind speed sensors 22, the controller 4 is configured to obtain wind load born by the arm support 13 according to wind directions of wind direction measuring points and wind speeds of the plurality of wind speed measuring points, and obtain corresponding hoisting performance parameters according to the wind load, wherein the hoisting performance parameters comprise at least one of the following: arm length, amplitude and rated lifting capacity of the crane.

The wind direction sensor 21 and the wind speed sensor 22 in the above embodiment are arranged in a manner that fully considers the actual situation that the wind speed changes along with the altitude from the ground in the operation process of the crane, especially the actual situation that the wind speed is difficult to obtain, the wind speed changes very often, the time for the wind speed to be suitable for construction is short, and the construction difficulty is high in mountain areas when the crane is constructed in western mountain areas.

Based on the setting mode of the sensor, the crane not only can acquire the wind direction and the wind speed of the boom operation position, but also can acquire the wind speeds of different positions along the length direction of the boom on line in real time, namely, the wind speeds of different height positions on the boom, and the acquired wind speeds are more comprehensive and can reflect the loading condition of the boom more truly.

The crane according to the current general standard must comply with the regulations of the maximum allowable wind speed given by the operating table, and when the wind exceeds five orders (wind speed about 9.8 m/s), the crane must be prohibited from operating and the crane boom must be lowered.

Although the western mountain area is the best place for fan construction, according to statistics, part of mountain areas are windy for a long time, and the wind speed often exceeds 9.8m/s, the use of a crane is restricted by severe fan hoisting conditions, the attendance rate of crane equipment is reduced, and the construction efficiency and the construction progress are seriously influenced.

The general standard crane generally calculates the performance parameter table according to the most unfavorable principle, the wind speed acting on the whole arm support is directly assumed to be a constant value by the calculation mode, and the allowable maximum wind speed value of 9.8m/s is substituted to obtain the crane lifting performance table. The calculation mode can ensure that the crane can safely operate, but the safety coefficient is too large, so that equipment resource waste is easily caused.

Compared with the traditional crane, the crane with the sensor setting mode can calculate the lifting performance parameter according to the wind power condition of the actual operation environment, is beneficial to expanding the application range of crane products and improves the attendance rate of crane equipment.

Alternatively, referring to fig. 13, the controller 4 includes a lifting performance calculation module for implementing the above functions, the lifting performance calculation module including a processor required to calculate wind load and lifting performance parameters, a memory required to store the lifting performance parameters, and a display required to display the lifting performance parameters.

In some embodiments, referring to fig. 12, the controller 4 is configured to obtain the wind load according to the following relationship:

wherein A is _i Represents the effective frontal area of the boom 13 between the i-1 th wind speed measurement point and the i-th wind speed measurement point, a when i=1 _i The effective frontal area of the boom 13 between the bottom end of the boom 13 and the 1 st wind speed measurement point is shown. K is a parameter related to the air density of the working environment of the crane, C _f Representing the wind coefficient of the boom 13 in the wind direction of the wind direction measurement point. θ represents the angle between the wind direction of the wind direction measurement point and the horizontal direction. n represents the number of wind speed measurement points. V (V) _i Wind speed, V, representing the ith wind speed measurement point _Xi ＝V _i cosθ，V _Yi ＝V _i sinθ。F _X Representing the component of the wind load in the front-rear direction of the crane, F _Y The component of the wind load in the left-right direction of the crane is shown.

The effective frontal area mentioned above refers to the projected area of the boom on a plane perpendicular to the wind direction.

The mode of acquiring the wind load can fully consider the shape and the wind speed of the arm support 13 at different positions, so that the calculated wind load and lifting performance parameters are more accurate.

In some embodiments, referring to fig. 14, the crane further comprises an early warning device, the controller 4 being in signal connection with the early warning device and configured to: if the wind speed of any wind speed measuring point is larger than a preset value, the early warning device sends out wind speed alarm information and/or safety operation prompt information for prompting an operator of the crane to adjust the posture of the arm support 13.

In some embodiments, referring to fig. 14, the controller 4 is configured to: and in response to the wind speed alarm information, determining a safe operation area of the arm support 13 according to the wind direction information and the wind speed information, wherein the wind load is smaller than a limit value in the safe operation area, and the wind load is larger than or equal to the limit value outside the safe operation area.

Based on the control mode, if severe strong wind and strong wind suddenly appear, the wind speed exceeds a preset value, the early warning device can send wind speed alarm information to prompt the arm support that construction risks possibly appear based on the current gesture and wind power, and a driver can operate the turntable to drive the arm support to rotate according to safety operation prompt information sent by the early warning device and safety operation areas determined according to wind direction information and wind speed information, so that the arm support is located in the safety operation areas, and the risk of overturning accidents is reduced.

In some embodiments, referring to fig. 14, the controller 4 is in signal connection with the turntable 12 and is configured to: if the posture of the arm support 13 is unchanged within the specified time after the safety operation prompt information is sent, the turntable 12 drives the arm support 13 to rotate, so that the arm support 13 is in a safety operation area.

Based on the control mode, the posture of the arm support is unchanged within the set time after the safety operation prompt information is sent, the driver does not operate the turntable to rotate within the set time, at the moment, the controller can automatically send a signal for enabling the turntable to rotate, and the turntable correspondingly and automatically drives the arm support to rotate in the direction with stronger stability, so that the risk of overturning accidents is further reduced. The length of the prescribed time can be adaptively set according to the specific wind power condition of the crane working environment, and can be 5s for example.

Optionally, referring to fig. 14, the controller 4 comprises a safety protection module for implementing the above functions, the safety protection module comprising a processor required for calculating a safety operation area of the boom, a memory required for storing data about the safety operation area of the boom, and the above mentioned early warning means, wherein the means for issuing wind speed warning information and information may be the same or different.

In some embodiments, the controllers described above may be implemented as general purpose processors, programmable logic controllers (Programmable Logic Controller, abbreviated as PLCs), digital signal processors (Digital Signal Processor, abbreviated as DSPs), application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASICs), field programmable gate arrays (Field-Programmable Gate Array, abbreviated as FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof for performing the functions described in the present disclosure.

Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present disclosure and are not limiting thereof; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will appreciate that: modifications may be made to the specific embodiments of the disclosure or equivalents may be substituted for part of the technical features that are intended to be included within the scope of the claims of the disclosure.

Claims

1. A crane, comprising:

the vehicle body (1) comprises a vehicle frame (11), a rotary table (12) and a cantilever crane (13), wherein the rotary table (12) is rotatably arranged on the vehicle frame (11) around a vertical axis, and one end of the cantilever crane (13) is connected to the rotary table (12); and

the lateral wind-resistant device (3) comprises two wind-resistant parts arranged on the left side and the right side of the arm support (13), each wind-resistant part comprises a first inhaul cable (31) and an adjusting device (32), one end of the first inhaul cable (31) is connected with the arm support (13), and the adjusting device (32) is configured to adjust the included angle between the first inhaul cable (31) and the arm support (13).

2. Crane according to claim 1, wherein the first end of the first cable (31) is connected to the boom (13), the adjusting device (32) is drivingly connected to the second end of the first cable (31), the adjusting device (32) being configured to drive the second end of the first cable (31) to approach or to depart from the boom (13) in the left-right direction of the boom (13) for adjusting the angle of the first cable (31) to the boom (13).

3. Crane according to claim 2, wherein the adjustment device (32) comprises a telescopic drive (322), a first end of the telescopic drive (322) in the length direction being hinged to the boom (13), a second end of the telescopic drive (322) in the length direction being connected to the first cable (31), the telescopic drive (322) being telescopically arranged in its own length direction.

4. A crane according to claim 3, wherein the telescopic driving device (322) comprises a bracket (3221) and an oil cylinder (3222), a first end of the oil cylinder (3222) is hinged with the arm support (13), and two ends of the bracket (3221) in the length direction are respectively connected with a second end of the oil cylinder (3222) and a second end of the first guy cable (31).

5. A crane according to claim 2, wherein,

each wind-resistant part comprises a second stay cable (33);

the adjusting device (32) comprises a first pulley (3211), the first pulley (3211) is installed on the adjusting device (32), the second guy cable (33) is wound on the first pulley (3211), and two ends of the second guy cable are connected to the rotary table (12).

6. Crane according to claim 2, wherein each of the wind-resistant sections comprises at least two of the first guys (31) arranged side by side.

7. Crane according to claim 1, wherein the vehicle body (1) comprises a hook (14), the hook (14) being suspended from the boom (13), the crane comprising a hook swing limiting device (5), the hook swing limiting device (5) being configured to limit the swing of the hook (14) relative to the boom (13).

8. Crane according to claim 7, wherein the hook swing limiting device (5) comprises:

the guiding component is arranged on the arm support (13); and

and a third stay cable (51) movably connected with the guide part along the length direction of the arm support (13), wherein the lifting hook swing limiting device (5) is configured to apply a constraint force to the lifting hook (14) through the third stay cable (51) so as to limit the swing of the lifting hook (14) relative to the arm support (13).

9. Crane according to claim 8, wherein the hook swing limiting device (5) comprises:

a second pulley (53) mounted on the hook (14); and

a counterweight (52) around which the third cable (51) is wound, the third cable (51) passing through the guide members and being connected to the counterweight (52) at both ends thereof by respectively bypassing both the second pulleys (53), the counterweight (52) being configured to tension the third cable (51) to apply a restraining force to the hooks (14).

10. The crane according to claim 8, wherein the guiding member is a hoisting wire (182) of the crane, the hoisting wire (182) being configured to drive the hook (14) up or down, the third guy cable (51) passing through a space between the hoisting wire (182) and a boom and being movably suspended on the hoisting wire (182).

11. Crane according to any of claims 1-10, characterized in that the crane further comprises a wind measuring device (2), the wind measuring device (2) comprising a wind direction sensor (21) and/or a wind speed sensor (22), the wind direction sensor (21) being configured to obtain wind direction information of the boom (13), the wind speed sensor (22) being configured to obtain wind speed information of the boom (13).

12. The crane as claimed in claim 11, wherein,

the wind direction sensor (21) is arranged at a wind direction measuring point at the top end of the arm support (13) and is configured to acquire wind direction of the wind direction measuring point as the wind direction information;

the wind speed sensors (22) are arranged at wind speed measuring points on the arm support (13) and are configured to acquire wind speeds of the wind speed measuring points as wind speed information, and the wind speed sensors (22) are distributed along the length direction of the arm support (13);

the crane further comprises a controller (4), the controller (4) is in signal connection with the wind direction sensor (21) and the wind speed sensors (22), the controller (4) is configured to acquire wind loads born by the arm frame (13) according to wind directions of the wind direction measuring points and wind speeds of the wind speed measuring points, and acquire corresponding lifting performance parameters according to the wind loads, and the lifting performance parameters comprise at least one of the following: the arm length, amplitude and rated lifting capacity of the crane.

13. Crane according to claim 12, characterized in that the controller (4) is configured to obtain the wind load according to the following relation:

wherein A is _i Representing the effective frontal area of the boom (13) between the i-1 th wind speed measurement point and the i-1 th wind speed measurement point, a when i=1 _i Representing the effective windward area of the boom (13) between the bottom end of the boom (13) and the 1 st wind speed measuring point, K being a parameter related to the air density of the working environment of the crane, C _f Wind coefficient representing wind direction of the arm support (13) along the wind direction measuring point, theta representing an included angle between wind direction of the wind direction measuring point and horizontal direction, n representing the number of wind speed measuring points, V _i Wind representing the ith wind speed measurement pointSpeed, V _Xi ＝V _i cosθ，V _Yi ＝V _i sinθ，F _X Representing the component of the wind load in the front-rear direction of the crane, F _Y Representing the component of the wind load in the left-right direction of the crane.

14. Crane according to claim 12, further comprising an early warning device, the controller (4) being in signal connection with the early warning device and configured to: if the wind speed of any wind speed measuring point is larger than a preset value, the early warning device sends out wind speed alarm information and/or safety operation prompt information for prompting an operator of the crane to adjust the posture of the arm support (13).

15. Crane according to claim 14, characterized in that the controller (4) is configured to: and responding to the wind speed alarm information, and determining a safe operation area of the arm support (13) according to the wind direction information and the wind speed information, wherein the wind load is smaller than a limit value in the safe operation area, and the wind load is larger than or equal to the limit value outside the safe operation area.

16. Crane according to claim 15, wherein the controller (4) is in signal connection with the turntable (12) and is configured to: if the posture of the arm support (13) is unchanged within the set time after the safety operation prompt information is sent, the turntable (12) drives the arm support (13) to rotate, so that the arm support (13) is located in the safety operation area.