Crane and method for mounting an oversling pulley of a crane

Abstract

The application discloses a crane and a hoisting pulley mounting method, and the crane comprises a base, a hoisting arm, a hoisting device comprising two hoisting components, a wing-shaped frame comprising a first support and a second support, and a hoisting pulley mounting device comprising a mounting rope, a mounting winch, a first rope passing element and a second rope passing element; when a hoisting pulley corresponding to the first support is mounted to the first support, the mounting rope changes the extending direction after passing through the first rope passing element to be connected with the hoisting pulley corresponding to the first support; and when a hoisting pulley corresponding to the second support is mounted to the second support, the mounting rope changes the extending direction after passing through the second rope passing element to be connected with the hoisting pulley corresponding to the second support.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crane installation, in particular to a crane and a method for installing a super-lifting pulley of the crane. BACKGROUND

[0002] With the rapid development of national modernization construction, the weight of hoisting and the height of installation are continuously improved, and super-lifting components are widely used in large-tonnage all-terrain cranes, which greatly improves the performance of the crane. The super-lifting pulley for connecting the wing-shaped bracket on the super-lifting mast and the lifting arm is also getting larger and larger, and the installation convenience of the super-lifting pulley determines the working efficiency of the crane. The existing installation method of the super-lifting pulley is shown in Figure 1 and Figure 2 , which is installed by pulling the super-lifting pulley 24 above the installation position of the wing-shaped bracket 3 through the hook 200 of the auxiliary crane. The use of the auxiliary crane for pulling requires a larger installation site, and the installation cost is high. In addition, the auxiliary crane for pulling also has the problem of easy angle deviation. SUMMARY

[0003] The purpose of the present application is to provide a crane with strong lifting capacity and a method for installing a super-lifting pulley of the crane, which can be more convenient, effective and accurate.

[0004] The first aspect of the present application discloses a crane, comprising:

[0005] a base;

[0006] a lifting arm hingedly connected to the base at a first end thereof;

[0007] a super-lifting device comprising two super-lifting components arranged along the width direction of the lifting arm, the super-lifting components comprising a super-lifting plate, a super-lifting rope, a super-lifting winch for winding the super-lifting rope, a super-lifting pulley, and a super-lifting mast arranged on the lifting arm, the first end of the super-lifting mast being connected to the lifting arm, the second end of the super-lifting mast being connected to the first end of the lifting arm through the super-lifting plate, and the super-lifting rope being connected to the super-lifting pulley after passing through the second end of the super-lifting plate;

[0008] a wing-shaped bracket comprising a first bracket and a second bracket arranged along the width direction of the lifting arm and connected to the lifting arm at a first end thereof, the first bracket and the second bracket corresponding to the two super-lifting components respectively, a connecting member being arranged on the second end of the first bracket and the second end of the second bracket, and the first bracket and the second bracket being connected to the super-lifting pulley of the corresponding super-lifting component through the connecting member thereof respectively;

[0009] The super starting pulley mounting device comprises a mounting rope, a mounting winch arranged on the base and used for winding the mounting rope, and a rope passing device, the rope passing device comprises a first rope passing member arranged on the side of the connecting member of the first support away from the super starting mast corresponding to the first support, and a second rope passing member arranged on the side of the connecting member of the second support away from the super starting mast corresponding to the second support, the first rope passing member and the second rope passing member are used for limiting the position of the mounting rope along the width direction of the boom when the super starting pulley is mounted.

[0010] When the super starting pulley corresponding to the first support is mounted to the first support, the mounting rope is stretched from the mounting winch to the direction close to the second end of the boom, and the direction of the mounting rope is changed to the direction close to the first end of the boom after passing through the first rope passing member, so as to be connected with the super starting pulley corresponding to the first support; when the super starting pulley corresponding to the second support is mounted to the second support, the mounting rope is stretched from the mounting winch to the direction close to the second end of the boom, and the direction of the mounting rope is changed to the direction close to the first end of the boom after passing through the second rope passing member, so as to be connected with the super starting pulley corresponding to the second support.

[0011] In some embodiments, the rope passing device further comprises a third rope passing member, the third rope passing member is used for limiting the position of the mounting rope along the width direction of the boom when the super starting pulley is mounted, the third rope passing member is arranged between the first rope passing member and the second rope passing member along the width direction of the boom, and is arranged between the connecting member of the first support and the connecting member of the second support, wherein when the super starting pulley corresponding to the first support is mounted to the first support, the mounting rope is stretched from the mounting winch to the direction close to the second end of the boom, and the direction of the mounting rope is changed to the direction close to the first end of the boom after passing through the third rope passing member and the first rope passing member in sequence, so as to be connected with the super starting pulley corresponding to the first support; when the super starting pulley corresponding to the second support is mounted to the second support, the mounting rope is stretched from the mounting winch to the direction close to the second end of the boom, and the direction of the mounting rope is changed to the direction close to the first end of the boom after passing through the third rope passing member and the second rope passing member in sequence, so as to be connected with the super starting pulley corresponding to the second support.

[0012] In some embodiments, the first rope passing member, the second rope passing member and / or the third rope passing member are fixed pulleys arranged on the boom.

[0013] In some embodiments, the mounting rope is a hoisting rope of the crane used for lifting heavy objects, and the mounting winch is a main winch used for winding the hoisting rope.

[0014] In some embodiments, when the first support corresponding oversling is installed to the first support, the second end of the first support corresponding oversling, the connector of the first support and the first rope are located on the same straight line in the plane formed by the width direction and the length direction of the boom; and / or, when the second support corresponding oversling is installed to the second support, the second end of the second support corresponding oversling, the connector of the second support and the second rope are located on the same straight line in the plane formed by the width direction and the length direction of the boom.

[0015] In some embodiments, the distance between the third rope and the first rope and the second rope is the same along the width direction of the boom.

[0016] In some embodiments, when the first support corresponding oversling is installed to the first support, the first rope and the third rope are located on opposite sides of the first support; and / or, when the second support corresponding oversling is installed to the second support, the second rope and the third rope are located on opposite sides of the second support.

[0017] In some embodiments, when the first support corresponding oversling is installed to the first support, the installation rope extends from the installation winch towards the direction of the second end of the boom and does not change the extending direction after passing through the third rope, and changes the extending direction after passing through the first rope; and / or, when the second support corresponding oversling is installed to the second support, the installation rope extends from the installation winch towards the direction of the second end of the boom and does not change the extending direction after passing through the third rope, and changes the extending direction after passing through the second rope.

[0018] In some embodiments, the boom comprises a telescopic arm and a sub-arm, the telescopic arm comprises a basic arm hinged to the base and a plurality of section arms telescopically relative to the basic arm, the sub-arm and the last section arm farthest from the basic arm when the telescopic arm is fully extended are fixedly connected, the first end of the oversling is hinged to the basic arm, and the first support and the second support are hinged to the sub-arm.

[0019] The second aspect of the present application discloses a method for installing the oversling of the crane, comprising:

[0020] In the process of installing the super launching pulley corresponding to the first support to the connection of the first support, the installation rope is stretched out from the installation winch towards the direction close to the second end of the boom, and the direction of stretching out is changed to the direction close to the first end of the boom after the installation rope passes through the first rope passing member, then the installation rope is connected to the super launching pulley corresponding to the first support, then the installation rope is retracted by the installation winch to pull the super launching pulley corresponding to the first support to the connection member of the first support, and then the super launching pulley corresponding to the first support is connected to the connection member of the first support.

[0021] In the process of installing the super launching pulley corresponding to the second support to the connection of the second support, the installation rope is stretched out from the installation winch towards the direction close to the second end of the boom, and the direction of stretching out is changed to the direction close to the first end of the boom after the installation rope passes through the second rope passing member, then the installation rope is connected to the super launching pulley corresponding to the second support, then the installation rope is retracted by the installation winch to pull the super launching pulley corresponding to the second support to the connection member of the second support, and then the super launching pulley corresponding to the second support is connected to the connection member of the second support.

[0022] In some embodiments, the rope passing device further comprises a third rope passing member for limiting the position of the installation rope along the width direction of the boom when installing the super launching pulley, the third rope passing member is located between the first rope passing member and the second rope passing member and between the connection member of the first support and the connection member of the second support along the width direction of the boom, and the installation method of the super launching pulley of the crane comprises:

[0023] In the process of installing the super launching pulley corresponding to the first support to the connection of the first support, the installation rope is stretched out from the installation winch towards the direction close to the second end of the boom, and the direction of stretching out is changed to the direction close to the first end of the boom after the installation rope passes through the first rope passing member and the second rope passing member in sequence.

[0024] In the process of installing the super launching pulley corresponding to the second support to the connection of the second support, the installation rope is stretched out from the installation winch towards the direction close to the second end of the boom, and the direction of stretching out is changed to the direction close to the first end of the boom after the installation rope passes through the third rope passing member and the second rope passing member in sequence.

[0025] The crane provided by this invention has a strong lifting capacity due to the inclusion of two super-lifting components and a wing-shaped frame comprising a first support and a second support. Simultaneously, by incorporating a super-lifting pulley installation device, the super-lifting pulleys of the two super-lifting components can be effectively and accurately pulled using a winch, installation rope, first rope guide, and second rope guide. This ensures the super-lifting pulleys reach the connection position of the first or second support accurately and efficiently, eliminating the need for auxiliary crane traction, saving installation space, and improving installation efficiency.

[0026] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the installation of the super-start pulley for a crane in the prior art;

[0029] Figure 2 for Figure 1 The diagram shows an enlarged view of part A.

[0030] Figure 3 This is a schematic diagram of the installation of the super-start pulley of a crane according to some embodiments of the present invention;

[0031] Figure 4 for Figure 3 The diagram shows an enlarged view of part B.

[0032] Figure 5 for Figure 3 A structural schematic diagram of the part shown from another angle;

[0033] Figure 6 This is a partial structural schematic diagram of the first rope guide, the second rope guide, or the third rope guide according to some embodiments of the present invention. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] The foregoing is considered as illustrative only of the principles of the application. Other variations and modifications can be made to the embodiments disclosed in this document, without departing from the spirit or scope of the application, as will be apparent to those with ordinary skill in the art. Further, it is not intended that this application be limited to the specific embodiments disclosed herein, but that, instead, this application can be realized using any number of variations encompassed within the spirit or scope of the application. Accordingly, the disclosure of this patent document is to be considered in all respects as illustrative and not restrictive, as numerous modifications are possible in light of the above teachings. Moreover, the examples set forth in the description of the application serve merely as representation of the many embodiments of the application, as defined by the broad scope of the claims. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, figures, and other references mentioned in this document are incorporated by reference in their entirety for the teachings relevant to the sentence and / or paragraph in which the reference is presented.

[0036] In the description of the application, it should be understood that the use of "first", "second", "third" and the like words of similar meaning in the description and in the claims is intended to distinguish between similar elements and is not intended to imply an order of precedence. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, figures, and other references mentioned in this document are incorporated by reference in their entirety for the teachings relevant to the sentence and / or paragraph in which the reference is presented.

[0037] In the description of the application, it should be understood that the use of "first", "second", "third" and the like words of similar meaning in the description and in the claims is intended to distinguish between similar elements and is not intended to imply an order of precedence. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, figures, and other references mentioned in this document are incorporated by reference in their entirety for the teachings relevant to the sentence and / or paragraph in which the reference is presented.

[0038] For the purposes of this document, the terms "coupled" and "connected", along with their derivatives, can be used. It should be understood that these terms are not intended as synonyms for each other. Rather, particular embodiments can be described using the terms "coupled" or "connected" to indicate that two or more elements are in some way physically or logically related to each other, but the relation can be either direct or indirect, it can be based on physical, logical, or other connections, and it can be temporary or permanent. In some embodiments, "coupled" or "connected" can be used to indicate that two or more elements are electrically connected or coupled, as in a common conductor, in addition, the singular form "a", "an", and "the" include plural references unless the context clearly dictates otherwise. As used herein, the term "exemplary" can indicate the embodiment(s) being particularly disclosed as examples or instances of the field or subject matter. Unless otherwise noted, the use of morphological and / or other grammatical forms of the word "exemplary", such as "exemplification" and "exemplified", are expressly understood to be open-ended, meaning that an exemplary embodiment(s) should be considered as furnishing just one example or instance of the field or subject matter and not as a general description or representation of such field or subject matter.

[0039] The crane of the present embodiment includes a base, a hoist arm 1, a superlift device, a wing bracket 3, and a superlift trolley mounting device.

[0040] The base of the crane is the base of the crane, and the base is used to install the components of the crane such as the lifting arm, counterweight, etc. In a self-propelled crane, such as a wheel-type crane or a track-type crane, the base can be installed under the wheels or tracks to realize the walking of the crane. In a non-self-propelled crane, such as a vehicle-mounted crane, the base is installed on the vehicle to realize the walking of the crane through the vehicle. The lifting arm 1 is used to lift the load, and the first end of the lifting arm 1 is hinged to the base, so that the luffing of the lifting arm 1 in the vertical plane can be realized by rotating relative to the base.

[0041] The super-lifting device includes two super-lifting components arranged along the width direction of the lifting arm 1. The super-lifting device is a device for reducing the deformation of the lifting arm to improve the lifting performance. The super-lifting component includes a super-lifting pull plate 22, a super-lifting rope 23, a super-lifting winch for winding the super-lifting rope 23, a super-lifting movable pulley 24, and a super-lifting mast 21 arranged on the lifting arm 1. The first end of the super-lifting mast 21 is connected to the lifting arm 1, such as hinged, and the second end of the super-lifting mast 21 is connected to the first end of the lifting arm 1 through the super-lifting pull plate 22. The super-lifting rope 23 passes through the second end of the super-lifting mast 21 and cooperates with the super-lifting movable pulley 24. In some embodiments, a fixed pulley is arranged on the second end of the super-lifting mast 21, and the super-lifting rope 23 passes through the fixed pulley and extends to pass through the second end of the super-lifting mast. In some embodiments, a relatively smooth surface can also be arranged on the second end of the super-lifting mast 21, and the super-lifting rope passes through the bearing and slides relative to the smooth surface to pass through the second end of the super-lifting mast. The cooperation of the super-lifting rope with the super-lifting movable pulley 24 is shown in Figure 1 and Figure 3 The super-lifting winch is used to wind the super-lifting rope, so as to realize the tightening and loosening of the super-lifting rope, and accordingly realize the approach and departure of the super-lifting movable pulley to the second end of the super-lifting mast 21.

[0042] As shown in Figure 1 , Figure 3 and Figure 5 The wing-shaped frame 3 includes a first support 31 and a second support 32 arranged along the width direction of the lifting arm 1 and connected to the lifting arm 1, such as hinged, at the first end. The second end of the first support 31 and the second end of the second support 32 are respectively provided with a connecting piece 34, and the first support 31 and the second support 32 are respectively connected to the super-lifting movable pulley 24 of the corresponding super-lifting component through the connecting piece 34, as shown in Figure 5In the illustrated embodiment, the connecting member 34 is a connecting pull plate, which has a connecting portion for connecting with the super-starting pulley. The connecting portion, for example, has a connecting hole. The super-starting pulley is connected to the connecting portion by inserting a pin into the connecting hole and the center hole of the super-starting pulley's shaft. That is, the super-starting pulley is connected to the second end of the first bracket 31 or the second bracket 32 ​​via the connecting member 34. In some embodiments not shown in the illustrations, the connecting member 34 can also be a mounting portion directly provided on the ends of the first bracket 31 and the second bracket 32. For example, the connecting members of the first bracket 31 and the second bracket 32 ​​are respectively provided with connecting holes on the first bracket 31 and the second bracket 32. The first bracket 31 and the second bracket of the airfoil 3, through their hinge relative to the lifting arm 1, can rotate relative to the lifting arm 1 about an axis extending along the width direction of the lifting arm 1. Figure 1 , 3 In the embodiment shown in Figures 5 and 6, the first bracket 31 and the second bracket 32 ​​are used to wait for the installation of the super-start pulley 24. At this time, the first bracket 31 and the second bracket 32 ​​are "lying flat" relative to the lifting arm 1. The angle between the first bracket 31 and the second bracket 32 ​​and the lifting arm 1 is close to zero degrees or a small acute angle, such as seven degrees. After the first bracket 31 and the second bracket 32 ​​are connected to the super-start pulley 24 of the corresponding super-start component, when the lifting arm is working, the angle between the first bracket 31 and the second bracket 32 ​​and the lifting arm 1 is close to ninety degrees, such as eighty-five to eighty-eight degrees. The second ends of the first bracket 31 and the second bracket 32 ​​are also connected to the lifting arm through a pull plate. That is, when the lifting arm is working, the second ends of the first bracket 31 and the second bracket 32 ​​are connected to the super-start pulley on both sides and to the lifting arm through the pull plate, respectively. In the embodiment shown in the figure, the first support and the second support include a plurality of connecting rods 333 and a first rod 331 and a second rod 332 distributed along the width direction. One end of the first rod 331 and the second rod 332 are both hinged to the lifting arm, and the other ends of the first rod 331 and the second rod 332 are close to each other. The first rod 331 and the second rod 332 are connected by a plurality of connecting rods 333 so that the first support 31 and the second support 32 form an A-shaped structure as shown in the figure.

[0043] The super starting pulley mounting device comprises a mounting rope 41, a mounting winch for winding the mounting rope 41 and arranged on the base, and a rope passing device, the rope passing device comprises a first rope passing member 51 and a second rope passing member 52. The first rope passing member 51 is arranged on the side of the connecting member of the first support 31 away from the corresponding super derrick 21 of the first support 31, and the second rope passing member 52 is arranged on the side of the connecting member of the second support 32 away from the corresponding super derrick 21 of the second support 32. The first rope passing member 51 and the second rope passing member 52 are used for limiting the position of the mounting rope 41 along the width direction of the boom 1 when the super starting pulley 24 is mounted. The structure of the first rope passing member 51 and the second rope passing member 52 can refer to the structure of the second end of the super derrick 21 for arranging a fixed pulley or a smooth surface for passing the super rope, for example Figure 6 the fixed pulley structure shown.

[0044] When the super starting pulley 24 corresponding to the first support 31 is mounted to the connecting member of the first support 31, the mounting rope 41 is stretched from the mounting winch to the direction close to the second end of the boom 1 and changes the stretching direction to the direction close to the first end of the boom 1 after passing through the first rope passing member 51, so as to be connected with the super starting pulley 24 corresponding to the first support 31. After the mounting rope 41 is connected with the super starting pulley, the mounting winch is rotated to shrink the mounting rope 41, the mounting rope 41 pulls the super starting pulley to move to the direction close to the connecting member of the first support 31, and when the connecting part of the super starting pulley is aligned with the connecting member, the super starting pulley is conveniently and effectively mounted with the connecting member. Since the mounting rope is guided by the first rope passing member during the pulling of the super starting pulley, the super starting pulley can be stably and accurately moved and aligned with the connecting member.

[0045] When the super starting pulley 24 corresponding to the second support 32 is mounted to the connecting member of the second support 32, the mounting rope 41 is stretched from the mounting winch to the direction close to the second end of the boom 1 and changes the stretching direction to the direction close to the first end of the boom 1 after passing through the second rope passing member 51, so as to be connected with the super starting pulley 24 corresponding to the second support 32. After the mounting rope 41 is connected with the super starting pulley, the mounting winch is rotated to shrink the mounting rope 41, the mounting rope 41 pulls the super starting pulley to move to the direction close to the connecting member of the second support 32, and when the connecting part of the super starting pulley is aligned with the connecting member, the super starting pulley is conveniently and effectively mounted with the connecting member. After the mounting rope 41 is connected with the super starting pulley, the mounting winch is rotated to shrink the mounting rope 41, the mounting rope 41 pulls the super starting pulley to move to the direction close to the connecting member of the second support 32, and when the connecting part of the super starting pulley is aligned with the connecting member, the super starting pulley is conveniently and effectively mounted with the connecting member. Since the mounting rope is guided by the first rope passing member during the pulling of the super starting pulley, the super starting pulley can be stably and accurately moved and aligned with the connecting member.

[0046] The crane of the embodiment has strong lifting capacity by setting two super lifting components and setting the wing-shaped frame 3 including the first support 31 and the second support 32. Meanwhile, by setting the super lifting driving pulley mounting device, the super lifting driving pulley 24 of the two super lifting components can be effectively and accurately pulled by installing the hoist, the installation rope 41, the first rope passing member 51 and the second rope passing member 52, so that the super lifting driving pulley 24 accurately and effectively reaches the connecting position of the first support 31 or the second support 32, without the need of auxiliary crane pulling, saving installation site and improving installation efficiency.

[0047] In some embodiments, the rope passing device further includes a third rope passing member 53. The third rope passing member 53 is located between the first rope passing member 51 and the second rope passing member 52 along the width direction of the lifting arm 1, and the third rope passing member 53 is located between the connecting member of the first support 31 and the connecting member of the second support 32. The third rope passing member 53 is used to limit the position of the installation rope 41 along the width direction of the lifting arm 1 when the super lifting driving pulley 24 is installed. The structure of the third rope passing member 53 can refer to the structure of setting a fixed pulley or a smooth surface on the second end of the super lifting mast 21 for passing the super lifting rope as described above, for example Figure 6 the fixed pulley structure shown.

[0048] When the super lifting driving pulley 24 corresponding to the first support 31 is installed to be connected with the first support 31, the installation rope 41 is stretched out from the installation hoist to the direction close to the second end of the lifting arm 1, and after passing through the third rope passing member and the first rope passing member in turn, the stretching direction is changed to the direction close to the first end of the lifting arm 1 to be connected with the super lifting driving pulley 24 corresponding to the first support 31. Since the third rope passing member is installed between the first rope passing member and the second rope passing member along the width direction, the part of the installation rope stretched out from the installation hoist and passing through the third rope passing member is also guided to be located between the first rope passing member and the second rope passing member along the width direction, so that this part of the installation rope helps to avoid interference with the super lifting driving pulley during the pulling of the super lifting driving pulley, making the pulling of the super lifting driving pulley more reliable and effective.

[0049] When the super lifting driving pulley 24 corresponding to the second support 32 is installed to be connected with the second support 32, the installation rope 41 is stretched out from the installation hoist to the direction close to the second end of the lifting arm 1, and after passing through the third rope passing member and the second rope passing member in turn, the stretching direction is changed to the direction close to the first end of the lifting arm 1 to be connected with the super lifting driving pulley 24 corresponding to the second support 32. Since the third rope passing member is installed between the first rope passing member and the second rope passing member along the width direction, the part of the installation rope stretched out from the installation hoist and passing through the third rope passing member is also guided to be located between the first rope passing member and the second rope passing member along the width direction, so that this part of the installation rope helps to avoid interference with the super lifting driving pulley during the pulling of the super lifting driving pulley, making the pulling of the super lifting driving pulley more reliable and effective.

[0050] The installation rope 41 changes the extension direction after passing through the third rope passing member 53 and the first rope passing member 51. The installation rope 41 can change the extension direction after passing through the third rope passing member 53, and then pass through the first rope passing member 51 without changing the extension direction. Alternatively, as shown in FIG. 2, the installation rope 41 can pass through the third rope passing member 53 without changing the extension direction, and then change the extension direction after passing through the first rope passing member 51. Figure 5 When the second bracket corresponding super starting pulley 24 is installed, the installation rope 41 first passes through the third rope passing member 53, and then passes through the second rope passing member 52. The installation rope 41 changes the extension direction after passing through the third rope passing member 53 and the second rope passing member 52, i.e., changes from the direction away from the installation winch to the direction close to the installation winch. The installation rope 41 can change the extension direction after passing through the third rope passing member 53, and then pass through the second rope passing member 52 without changing the extension direction. Alternatively, the installation rope 41 can pass through the third rope passing member 53 without changing the extension direction, and then change the extension direction after passing through the second rope passing member 52.

[0051] In some embodiments, the first rope passing member, the second rope passing member, and / or the third rope passing member is a fixed pulley arranged on the hoist arm 1.

[0052] In some embodiments, the installation rope 41 is a hoisting rope of the crane for hoisting loads, and the installation winch is a main winch for winding the hoisting rope. The super starting pulley is installed by using the hoisting rope for hoisting loads and the main winch, which can save equipment and improve the utilization efficiency of the equipment.

[0053] In some embodiments, when the first bracket 31 corresponding super starting pulley 24 is installed to the first bracket 31, the second end of the super starting pulley 21 corresponding to the first bracket 31, the connecting member of the first bracket 31, and the first rope passing member are located on the same straight line in the plane formed by the width direction and the length direction of the hoist arm 1, i.e., the horizontal plane when the hoist arm is in the horizontal position, as shown in FIG. 2. Figure 3 The arrangement can make the pulling of the super starting pulley move on the straight line between the first rope passing member and the second end of the super starting mast 21, and accurately move to the connecting member of the first bracket 31, so as to form a stable connection.

[0054] In the process of installing the second support 32 corresponding overslinging pulley 24 to the second support 32, the second end of the second support 32 corresponding overslinging mast 21, the connecting piece of the second support 32 and the second rope passing piece are located on the same straight line in the plane formed by the width direction and the length direction of the boom 1. This arrangement, in the process of installing the overslinging pulley, through the limiting effect of the second rope passing piece on the installation rope along the width direction and the limiting effect of the second end of the overslinging mast 21 of the second support corresponding overslinging component on the installation rope, makes the pulling of the overslinging pulley moveable on the straight line between the second rope passing piece and the second end of the overslinging mast 21, and accurately moveable to the connecting piece of the second support 32, forming a stable connection.

[0055] In some embodiments, the distance between the third rope passing piece and the first rope passing piece and the second rope passing piece along the width direction of the boom 1 is the same.

[0056] In some embodiments, as shown in Figure 5 In the process of installing the first support 31 corresponding overslinging pulley 24 to the first support 31, the first rope passing piece and the third rope passing piece are located on the opposite sides of the first support 31; in the process of installing the second support 32 corresponding overslinging pulley 24 to the second support 32, the second rope passing piece and the third rope passing piece are located on the opposite sides of the second support 32.

[0057] In some embodiments, in the process of installing the first support 31 corresponding overslinging pulley 24 to the first support 31, the installation rope 41 extends from the installation winch to the direction close to the second end of the boom 1 and does not change the extending direction after passing through the third rope passing piece, and changes the extending direction after passing through the first rope passing piece; in the process of installing the second support 32 corresponding overslinging pulley 24 to the second support 32, the installation rope 41 extends from the installation winch to the direction close to the second end of the boom 1 and does not change the extending direction after passing through the third rope passing piece, and changes the extending direction after passing through the second rope passing piece.

[0058] In some embodiments, as shown in Figure 5 The boom 1 includes a telescopic arm 11 and a sub-arm 12, the telescopic arm 11 includes a basic arm hinged to the base and a plurality of joint arms telescopically connected to the basic arm, the sub-arm 12 and the last joint arm farthest from the basic arm when the telescopic arm 11 is fully extended are fixedly connected, the first end of the overslinging mast 21 is hinged to the basic arm, and the first support 31 and the second support 32 are hinged to the sub-arm 12.

[0059] In some embodiments, a method for installing an overslinging pulley 24 of a crane is also disclosed, comprising:

[0060] In the process of installing the first support 31 corresponding super starting pulley 24 to the first support 31, the installation rope 41 is stretched from the installation winch to the direction close to the second end of the crane boom 1, and then the installation rope 41 is changed to the direction close to the first end of the crane boom 1 after passing through the first rope passing member, and then the installation rope 41 is connected with the first support 31 corresponding super starting pulley 24, and then the installation rope 41 is retracted by the installation winch to pull the first support 31 corresponding super starting pulley 24 to the connecting member of the first support 31, and then the first support 31 corresponding super starting pulley 24 and the connecting member of the first support 31 are connected.

[0061] In the process of installing the second support 32 corresponding super starting pulley 24 to the second support 32, the installation rope 41 is stretched from the installation winch to the direction close to the second end of the crane boom 1, and then the installation rope 41 is changed to the direction close to the first end of the crane boom 1 after passing through the second rope passing member, and then the installation rope 41 is connected with the second support 32 corresponding super starting pulley 24, and then the installation rope 41 is retracted by the installation winch to pull the second support 32 corresponding super starting pulley 24 to the connecting member of the second support 32, and then the second support 32 corresponding super starting pulley 24 and the connecting member of the second support 32 are connected.

[0062] In some embodiments, a method for installing a super starting pulley 24 of a crane is also disclosed, comprising:

[0063] In the process of installing the first support 31 corresponding super starting pulley 24 to the first support 31, the installation rope 41 is stretched from the installation winch to the direction close to the second end of the crane boom 1, and then the installation rope 41 is changed to the direction close to the first end of the crane boom 1 after passing through the third rope passing member and the first rope passing member in sequence, and then the installation rope 41 is connected with the first support 31 corresponding super starting pulley 24, and then the installation rope 41 is retracted by the installation winch to pull the first support 31 corresponding super starting pulley 24 to the connecting member of the first support 31, and then the first support 31 corresponding super starting pulley 24 and the connecting member of the first support 31 are connected.

[0064] In the process of installing the second support 32 corresponding super starting pulley 24 to the second support 32, the installation rope 41 is stretched from the installation winch to the direction close to the second end of the crane boom 1, and then the installation rope 41 is changed to the direction close to the first end of the crane boom 1 after passing through the third rope passing member and the second rope passing member in sequence, and then the installation rope 41 is connected with the second support 32 corresponding super starting pulley 24, and then the installation rope 41 is retracted by the installation winch to pull the second support 32 corresponding super starting pulley 24 to the connecting member of the second support 32, and then the second support 32 corresponding super starting pulley 24 and the connecting member of the second support 32 are connected.

[0065] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not to limit the present application; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or equivalent replacements can be made to some technical features without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range of the present application claimed by the present application.

Claims

1. A crane, characterized in that The crane comprises: a base; a lifting arm, a first end of which is hinged to the base; a hoist device, comprising two hoist components arranged along the width direction of the lifting arm, the hoist components comprising a hoist pull plate, a hoist rope, a hoist winch for winding the hoist rope, a hoist movable pulley, and a hoist mast arranged on the lifting arm, a first end of the hoist mast being connected to the lifting arm, a second end of the hoist mast being connected to the first end of the lifting arm through the hoist pull plate, the hoist rope being connected to the hoist movable pulley after passing through a second end of the hoist pull plate; wing-shaped frames, comprising a first frame and a second frame arranged along the width direction of the lifting arm and having first ends connected to the lifting arm, the first frame and the second frame corresponding to the two hoist components respectively, a connecting member being arranged on a second end of the first frame and a second end of the second frame, the first frame and the second frame being connected to the hoist movable pulley of the corresponding hoist component through the connecting member respectively; a hoist movable pulley mounting device, comprising a mounting rope, a mounting winch for winding the mounting rope and arranged on the base, and a rope passing device, the rope passing device comprising a first rope passing member arranged on a side of the connecting member of the first frame away from the hoist mast corresponding to the first frame, and a second rope passing member arranged on a side of the connecting member of the second frame away from the hoist mast corresponding to the second frame, the first rope passing member and the second rope passing member being used for limiting the position of the mounting rope along the width direction of the lifting arm when mounting the hoist movable pulley through the mounting rope; wherein when mounting the hoist movable pulley corresponding to the first frame to the first frame, the mounting rope is stretched from the mounting winch to the direction close to the second end of the lifting arm, changes the stretching direction to the direction close to the first end of the lifting arm after passing through the first rope passing member, and is connected to the hoist movable pulley corresponding to the first frame, and when mounting the hoist movable pulley corresponding to the second frame to the second frame, the mounting rope is stretched from the mounting winch to the direction close to the second end of the lifting arm and changes the stretching direction to the direction close to the first end of the lifting arm after passing through the second rope passing member, and is connected to the hoist movable pulley corresponding to the second frame.

2. Crane according to claim 1, characterized in that The over-rope device further comprises a third over-rope member for limiting the position of the installation rope along the width direction of the boom when installing the super starting pulley by installing the rope and limiting the position of the installation rope along the width direction of the boom, the third over-rope member is located between the first over-rope member and the second over-rope member and between the connecting member of the first support and the connecting member of the second support along the width direction of the boom, wherein when the first support corresponding super starting pulley is installed to the first support, the installation rope is stretched from the installation winch to the direction close to the second end of the boom and changes the stretching direction to the direction close to the first end of the boom after passing through the third over-rope member and the first over-rope member in sequence to connect with the first support corresponding super starting pulley, and when the second support corresponding super starting pulley is installed to the second support, the installation rope is stretched from the installation winch to the direction close to the second end of the boom and changes the stretching direction to the direction close to the first end of the boom after passing through the third over-rope member and the second over-rope member in sequence to connect with the second support corresponding super starting pulley.

3. Crane according to claim 2, characterized in that The first over-rope member, the second over-rope member and / or the third over-rope member are fixed pulleys arranged on the boom.

4. The crane of claim 1, wherein, The installation rope is a hoisting rope of the crane for hoisting loads, and the installation winch is a main winch for winding the hoisting rope.

5. The crane of claim 2, wherein, When the first support corresponding super starting pulley is installed to the first support, the second end of the first support corresponding super starting pulley, the connecting member of the first support and the first over-rope member are located on the same straight line in the plane formed by the width direction and the length direction of the boom; and / or when the second support corresponding super starting pulley is installed to the second support, the second end of the second support corresponding super starting pulley, the connecting member of the second support and the second over-rope member are located on the same straight line in the plane formed by the width direction and the length direction of the boom.

6. The crane of claim 1, wherein, The boom comprises a telescopic arm and a sub-arm, the telescopic arm comprises a basic arm hinged to the base and a plurality of section arms telescopically arranged relative to the basic arm, the sub-arm and the last section arm farthest from the basic arm when the telescopic arm is fully extended are fixedly connected, the first end of the super starting mast is hinged to the basic arm, and the first support and the second support are hinged to the sub-arm.

7. A method of mounting the superdriving pulley of a crane as claimed in any one of the claims 1-6, characterized in that, Comprise: When the first support corresponding super starting pulley is installed to the first support, the installation rope is stretched from the installation winch to the direction close to the second end of the boom, the stretching direction of the installation rope is changed to the direction close to the first end of the boom after the installation rope passes through the first over-rope member, then the installation rope is connected with the first support corresponding super starting pulley, then the installation rope is retracted by the installation winch to pull the first support corresponding super starting pulley to the connecting member of the first support, and then the first support corresponding super starting pulley and the connecting member of the first support are connected; In the process of installing the super launching pulley corresponding to the second support to the connecting part of the second support, the installation rope is stretched out from the installation winch towards the direction of the second end of the boom, and the direction of the installation rope is changed to the direction of the first end of the boom after the installation rope passes through the second over-rope member, and then the installation rope is connected to the super launching pulley corresponding to the second support, and then the installation rope is retracted by the installation winch to pull the super launching pulley corresponding to the second support to the connecting part of the second support, and then the super launching pulley corresponding to the second support is connected to the connecting part of the second support.

8. The method of installing the superlift pulley of the hoist according to claim 7, characterized in that, The over-rope device further comprises a third over-rope member, which is used to limit the position of the installation rope along the width direction of the boom when the super launching pulley is installed, and the third over-rope member is located between the first over-rope member and the second over-rope member along the width direction of the boom and between the connecting part of the first support and the connecting part of the second support, and the installation method of the super launching pulley of the crane comprises: In the process of installing the super launching pulley corresponding to the first support to the connecting part of the first support, the installation rope is stretched out from the installation winch towards the direction of the second end of the boom, and the direction of the installation rope is changed to the direction of the first end of the boom after the installation rope passes through the third over-rope member and the first over-rope member in sequence; In the process of installing the super launching pulley corresponding to the second support to the connecting part of the second support, the installation rope is stretched out from the installation winch towards the direction of the second end of the boom, and the direction of the installation rope is changed to the direction of the first end of the boom after the installation rope passes through the third over-rope member and the second over-rope member in sequence.

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