Methods and auxiliary booms for crane systems

Abstract

A crane system (1) having an auxiliary boom (3), and a method for installing the auxiliary boom to the crane system. The auxiliary boom comprises a base mounting means (19), a tip engaging means (18) configured to receive the tip (10) of the main boom in an engagement position, and a wire handling means (17) located at the lifting end (13), the wire handling means configured to receive a main wire (7) from the main boom. The auxiliary boom may also include a connecting means (24) configured to connect to a moving means (6) of the main boom, allowing the crane system to control the auxiliary boom by the moving means for the main boom, and allowing the crane system to use the main wire to lift a load. The lifting capacity and / or lifting radius of the crane system is defined by the auxiliary boom.

Description

Technical Field

[0001] The present invention relates to an auxiliary boom of a crane system and a method for installing the auxiliary boom on the crane system.

Background Art

[0002] Assembly, maintenance, and component replacement are time-consuming, expensive, and obstructive to operations in many industries. Since the size of the crane system is limited, the crane system may not meet the requirements for lifting operations to lift loads. This is particularly applicable to crane systems arranged in high-rise building structures such as high-rise buildings, bridges, or the upper parts of wind turbines. The crane system may have a load capacity that is not suitable for specific lifting operations, especially heavy lift operations. Furthermore, the crane system may have a limited lift radius for handling specific lifting operations. The crane system is often a small crane system with limited lifting capabilities, such as limitations in load capacity.

[0003] European Patent Publication No. 3020622 describes a solution for lifting loads of varying weights by increasing load capacity. The crane system comprises a crane having a boom and a lift unit. Either the crane or the lift unit includes an auxiliary winch and wire assembly for mounting the lift unit to the crane boom. Before mounting the lift unit to the boom, the lift unit must be lifted to the crane boom and the auxiliary winch must be installed on the lift unit. Furthermore, the lift unit must be equipped with a wire for lifting purposes. The crane system controls the movement of the lift unit by controlling the boom. The crane system must be prepared to control the wire of the lift unit and must be equipped with means for driving the wire of the lift unit. Installation is very time-consuming due to the complex installation process. Even when the lift unit is installed in a position below the boom, the lift radius of the crane system is still limited. Therefore, the lifting operation is still limited. European Patent Publication No. 3020622 offers an expensive solution, the installation process is complex and time-consuming, and the operation requires separate lifting devices during operation, such as an auxiliary control device for controlling the wire for lifting and the lift unit. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] European Patent No. 3020622 [Overview of the project] [Means for solving the problem]

[0005] The object of the present invention is to overcome these problems by providing a method for the rapid installation of an auxiliary boom in a crane system. Another object of the present invention is to provide a robust auxiliary boom so that the crane system can increase its load capacity and / or lift radius.

[0006] The present invention addresses this by providing a method for installing an auxiliary boom into a crane system, the crane system comprising a main boom, a crane base, and a main wire, and the method is as follows: A step of providing an auxiliary boom, wherein the auxiliary boom comprises a lifting end, a base end, a boom section disposed between the lifting end and the base end, and at least one wire handling means. The wire handling means at the lifting end of the auxiliary boom includes the step of positioning the main wire on the lifting grip, A step of lifting an auxiliary boom using a main wire, wherein the lifting position of the auxiliary boom is determined by the center of gravity of the auxiliary boom, When holding the auxiliary boom with the main wire, the steps include positioning the auxiliary boom or a part of the auxiliary boom relative to the main boom, When the auxiliary boom is held by the main wire, the auxiliary boom is attached to the main boom and / or crane base at a position where the auxiliary boom or a part of the auxiliary boom is positioned along the main boom, The method comprises the steps of positioning the main wire in and / or via the wire handling means of the auxiliary boom, so that the lifting capacity of the crane system is defined by the auxiliary boom while using the main wire to lift the load.

[0007] The demand for agile and lightweight crane systems in the high-rise construction industry has increased significantly over the years. Difficult areas and increasingly heavy components create significant challenges for the installation and maintenance of high-rise structures. Crane systems can be positioned on top of high-rise buildings. Crane systems must be easy and quick to install so as to reduce installation time. During operation, cranes must still have high load capacity so as to be able to handle the heavy loads required. This method provides the installation of an auxiliary boom in the crane system, which is fast and reliable, reduces installation time, and thereby also reduces installation costs. Cranes can be positioned on site, for example, on high-rise buildings, bridges, or on top of wind turbines.

[0008] The crane system comprises a main boom, a crane base, and a main wire. When an auxiliary boom is installed in the crane system, the load capacity and / or lift radius of the crane system are increased. The auxiliary boom comprises a lifting end, a base end, and a boom section, the boom section being positioned between the lifting end and the base end. The auxiliary boom also comprises at least one wire handling means for handling the main wire of the crane system, both during operation and when the auxiliary boom is installed in the crane system. When the auxiliary boom is installed in the crane system, the main wire is securely positioned by the lifting grip of the wire handling means at the lifting end of the auxiliary boom. At this time, the crane system can lift the auxiliary boom by the main wire.

[0009] The auxiliary boom or a portion of the auxiliary boom is positioned substantially parallel to the main boom when the auxiliary boom is held by the main wire at the lifting end of the auxiliary boom. The auxiliary boom or a portion of the auxiliary boom is attached to the tip and base of the main boom. Alternatively, the auxiliary boom or a portion of the auxiliary boom may be attached to the tip and base of the main boom. The main wire holds the auxiliary boom until it is securely attached to the crane system in a position substantially parallel to the main boom. The main wire is positioned to or within the wire handling means of the auxiliary boom. The crane system may operate the crane using the auxiliary boom as an improved main boom. The crane system may thus use the main wire, but the crane system in this case has the lifting capacity of the auxiliary boom while using the main wire to lift loads. The term "wire" should be understood in its broadest sense, and the main wire can comprise cables, wire ropes, chains, ropes, and other types of lifting media.

[0010] Maintaining or constructing wind turbines at a much lower overall cost and with a far greater environmental impact would strengthen wind energy as a competitive alternative to fossil fuels. Maintaining or constructing skyscrapers at a lower overall cost is also a competitive alternative.

[0011] In an advantageous method of the present invention, the method provides a further step by pulling the main wire to the wire handling means of the lifting end of the auxiliary boom through or around a further wire handling means positioned between the lifting end and the base end of the auxiliary boom.

[0012] The main boom may be an installation boom. The installation boom may be provided to install an auxiliary boom intended to become the main boom in the crane system. The auxiliary boom may be provided with additional wire handling means. The length of the auxiliary boom may be longer than the length of the main boom. The additional wire handling means may be positioned between the lifting end and the base end of the auxiliary boom. The main wire is pulled through or around the additional wire handling means and fed to the wire handling means at the lifting end of the auxiliary boom.

[0013] If the auxiliary boom can be lifted to a position substantially parallel to the main boom, the lifting end of the auxiliary boom may be positioned elevated relative to the tip of the main boom. Further wire handling means for the auxiliary boom may be positioned substantially adjacent to the tip of the main boom.

[0014] The main boom may have a predetermined length from the tip engagement means to the base mounting means equal to the length from the tip of the main boom to the crane base when the auxiliary boom is engaged with the tip of the main boom, and the auxiliary boom may be lifted so that the base mounting means can be connected to the crane base. Accordingly, further wire handling means may be positioned at a predetermined location between the lifting end and the base end of the auxiliary boom so that the main boom can lift its lifting end above the tip of the main boom.

[0015] In a more advantageous method of the present invention, the method is The steps include using the main wire to lift the auxiliary boom to the tip of the main boom, The steps include positioning the auxiliary boom substantially parallel to the main boom while lifting the tip of the main boom relative to the base of the main boom, The invention further provides the step of attaching the auxiliary boom to the main boom and / or crane base in a releaseable lock position while the auxiliary boom and main boom are in the upright position.

[0016] The main wire is used to lift the auxiliary boom to the tip of the main boom. The main boom is raised to a substantially elevated position. While tension is applied to the main wire, the crane system can position the auxiliary boom adjacent to the main boom. The crane system can position the auxiliary boom substantially parallel to the main boom when tension is applied to the rope. The auxiliary boom is positioned in an upright position substantially parallel to the main boom and / or crane base so that the auxiliary boom is in a releaseable locked position. The auxiliary boom can be releaseably locked to the main boom and / or crane base.

[0017] The "upright position" is understood to mean raising the tip of the main boom relative to the base of the main boom.

[0018] In a further advantageous aspect of the present invention, the method provides a further step of attaching the tip of the main boom to at least one tip engaging means provided on the auxiliary boom.

[0019] While the auxiliary boom is suspended in an upright position substantially parallel to the main boom, the tip engagement means engages with the tip of the main boom. The tip of the main boom may be provided with complementary engagement means that can be configured to engage with the tip engagement means on the auxiliary boom in an engagement position.

[0020] Alternatively, the auxiliary boom is positioned in an upright position substantially parallel to the main boom. If the main wire slackens, gravity may cause the auxiliary boom to move downward. When the main wire slackens, the auxiliary boom can be moved to a releaseable lock position in which the tip engaging means engages with a complementary engaging means provided at the tip of the main boom.

[0021] When the auxiliary boom and the main boom engage, the auxiliary boom can move relative to the main boom, whereby the proximal end of the auxiliary boom can be directed towards the crane base. When the proximal end is in a releasable lock position at the crane base, the releasable locking means is engaged.

[0022] In yet a further advantageous method of the present invention, the method comprises attaching at least one moving means of the main boom to the auxiliary boom, and further providing using the moving means to operate the auxiliary boom.

[0023] The main boom and the main wire are controlled by a crane system using one or more moving means. The moving means can be attached to the main boom at the crane base. The moving means can be detached from the main boom and reattached to the auxiliary boom, whereby the auxiliary boom can be controlled as a new improved main boom with all or most of the functions of the main boom. The crane system may control the auxiliary boom and the main wire via the auxiliary boom.

[0024] In a second aspect of the present invention, the present invention provides an auxiliary boom for a crane system, the auxiliary boom comprising a lifting end and a proximal end, a boom section disposed between the lifting end and the proximal end, at least one base attachment means disposed at the proximal end, the base attachment means being configured to be attached to the crane base, at least one tip engagement means disposed at a position remote from the base attachment means, the tip engagement means being configured to receive the tip of the main boom in an engagement position, The system comprises at least one wire handling means, at least one of which is located at the lifting end, and which is configured to receive a main wire from the main boom.

[0025] The auxiliary boom comprises a lifting end and a base end, and a boom section positioned between the lifting end and the base end. The auxiliary boom also includes a base mounting means positioned at the base end of the auxiliary boom. The base mounting means may be configured to be attached to the crane base. Alternatively, the base mounting means may be configured to be attached to the base end of the main boom. The base mounting means may be configured to be attached near the rotation center of the crane base.

[0026] The auxiliary boom is provided with a tip engagement means. The tip engagement means may be positioned at a predetermined location away from the base mounting means. The tip mounting means may be provided at a predetermined location between the lifting end and the base end of the auxiliary boom. The tip mounting means may be adjustable along the longitudinal direction of the auxiliary boom. The tip mounting means may be configured to receive the tip of the main boom in the engagement position. The tip mounting means may be configured to be releasably locked to the tip of the main boom.

[0027] The auxiliary boom is equipped with wire handling means. The wire handling means is located at the lifting end. The wire handling means is configured to receive the main wire from the main boom. The main wire can be controlled by the crane system during the operation of lifting a load. The wire handling means may include sheaves, rollers, pins or rails, etc., so that the wire handling means can guide the main wire back and forth with little resistance.

[0028] The auxiliary boom may be a telescopic boom, and is configured to extend its length. In this way, the auxiliary boom is configured to further extend the lift radius of the crane system. The crane system can control the lift radius with respect to the load being lifted.

[0029] In an advantageous embodiment of the present invention, the tip engaging means is provided at the lifting end, or between the lifting end and the base end.

[0030] The tip may be provided with complementary engaging means that can be configured to engage with a tip engaging means on the auxiliary boom at an engaging position. The predetermined position of the tip mounting means may be determined by the length of the auxiliary boom relative to the length of the main boom. The tip mounting means may be adjustable along the entire auxiliary boom or along a portion of the auxiliary boom. The tip mounting means may be configured to receive the tip of the main boom at the engaging connection. The tip mounting means may be configured to be releasably locked to the tip of the main boom.

[0031] The tip of the main boom and the lifting end of the auxiliary boom can come into contact with each other, thereby allowing the complementary engaging means on the main boom and the tip engaging means on the auxiliary boom to slide toward each other in the engaging direction so as to engage in a holding position or a releaseable locked position.

[0032] In a further advantageous embodiment of the present invention, additional wire handling means are positioned at a predetermined location between the lifting end and the base end of the auxiliary boom, such that the center of gravity of the auxiliary boom is located between the additional wire handling means and the base end of the auxiliary boom.

[0033] The auxiliary boom may be longer than the main boom. The main boom may have a predetermined length from the tip engagement means to the base mounting means equal to the length from the tip of the main boom to the crane base when the auxiliary boom is engaged with the tip of the main boom, and the auxiliary boom may be lifted so that the base mounting means can be connected to the crane base. If the auxiliary boom is longer than the main boom, the main boom may lift its lifting end higher than the tip of the main boom. Therefore, additional wire handling means can be positioned at a predetermined location between the lifting end and the base end of the auxiliary boom. The tip engagement means on the auxiliary boom may be positioned relative to the additional wire handling means so that the tip of the complementary engagement means on the main boom engages with the tip engagement means on the auxiliary boom near the additional wire handling means.

[0034] In yet another advantageous embodiment of the present invention, the auxiliary boom is configured to partially surround the main boom or a portion of the main boom.

[0035] The auxiliary boom may be configured to enclose the main boom at least partially. The auxiliary boom may be configured to enclose the base of the main boom or a portion of the base of the main boom. The auxiliary boom supports the main boom. The auxiliary boom may be configured to enclose the main boom partially or completely. The main boom and auxiliary boom may move in sync and follow a common motion. The main boom and auxiliary boom may move synchronously with respect to the crane boom and follow each other.

[0036] The lifting process of the main load may be handled primarily by the auxiliary boom alone. Alternatively, the lifting process of the main load may be handled by the auxiliary boom alone. The main load may be handled by the auxiliary boom alone. The main boom may have a longitudinal axis substantially parallel to the longitudinal axis of the auxiliary boom. The longitudinal axis of the main boom may partially overlap the longitudinal axis of the auxiliary boom.

[0037] When the auxiliary boom is mounted to or relative to the crane base, the center of the auxiliary boom's axis of rotation may be equal to the center of the main boom's axis of rotation. Alternatively, the center of the auxiliary boom's axis of rotation may be displaced relative to the center of the main boom's axis of rotation.

[0038] In a further advantageous embodiment of the present invention, the auxiliary boom comprises first and second boom sides configured to be positioned on each side of the main boom, the base end of each of the first and second boom sides configured to be positioned on each side of the crane base, and each of the first and second boom sides comprises a side end opposite to the base end, the side end being connected to the lifting section by a lifting end.

[0039] The first and second boom sides of the auxiliary boom section are configured to be positioned on both sides of the main boom. The base ends of the first and second boom sides are configured to be positioned on both sides of the crane base. The side ends of the first and second boom sides are positioned opposite each other to their respective base ends. The side ends of the first and second boom sides are connected to the lifting section by lifting ends. Alternatively, the side ends of the first and second boom sides are part of a lifting section having lifting ends.

[0040] In yet another advantageous embodiment of the present invention, the base end comprises at least one connecting means for attachment to a moving means of the crane base and / or main boom, so that the movement of the auxiliary boom can be controlled while the crane system is in operation.

[0041] The base end is provided with at least one first connecting means, and the base end or base end attachment(?) can be attached to the crane base. The crane can then control the movement of the auxiliary boom relative to the rotation center associated with the auxiliary boom during the lifting operation.

[0042] The base end is provided with at least one second connecting means, and the base end or base end attachment means may be attached to the moving means of the main boom. The crane may then control the movement of the auxiliary boom using the same moving means as the main boom during the lifting operation. In this case, the crane may directly control the movement of the auxiliary boom while the main boom is detached from the moving means. The moving means may be actuated hydraulically, electrically, and / or pneumatically.

[0043] In a third aspect of the present invention, the present invention provides a building crane system comprising a main boom and an auxiliary boom, wherein the crane system is configured to install the auxiliary boom on the main boom of the crane, and the auxiliary boom is configured to at least partially surround the base end of the main boom.

[0044] A crane system may be used for lifting operations related to the construction of buildings. These buildings may be high-rise structures or wind turbines, etc. The crane system may be positioned above ground level. The crane system includes a main boom. The main boom may not meet the requirements of the work. The main boom may be smaller than the load capacity and / or radius required for the particular work. The crane system is configured to have an auxiliary boom attached to the main boom of the crane using the main boom and main wire. The auxiliary boom provides the load capacity and / or radius required for the particular work.

[0045] In a further advantageous embodiment of a third aspect of the present invention, the longitudinal length of the auxiliary boom is longer than the longitudinal length of the main boom.

[0046] The auxiliary boom may be positioned connected to the crane base and may be longer than the main boom so that complementary engaging means of the main boom at its tip can engage end engaging means on the auxiliary boom in the engagement position. The auxiliary boom may be configured to increase the load capacity and / or lift radius of the crane system.

[0047] In yet another advantageous embodiment of a third aspect of the present invention, the auxiliary boom is configured to lift a load using a main wire.

[0048] If the auxiliary boom is securely attached to the crane system, the crane system may be able to control the auxiliary boom instead of the main boom. The crane system may be able to control the auxiliary boom and the lifted load using the main wire, which is suspended from the wire handling means at the lifting end of the auxiliary boom.

[0049] In a further advantageous embodiment of a third aspect of the present invention, the auxiliary boom comprises at least one connecting means configured to connect to the moving means of the crane base and / or the main boom, so that the crane system can control the auxiliary boom by the moving means for the main boom.

[0050] The auxiliary boom comprises at least one connecting means configured to connect to the crane base and / or the main boom's moving means. The base end comprises at least one first connecting means so that the base end or the base end can be attached to the crane base. The crane can then control the movement of the auxiliary boom relative to the center of rotation associated with the auxiliary boom during the lifting operation.

[0051] The base end is provided with at least one second connecting means, and the base end can be attached to the moving means of the main boom. The crane can then control the movement of the auxiliary boom using the same moving means as the main boom during the lifting operation.

[0052] The crane system allows the auxiliary boom to be controlled by the means of moving the main boom, without having to control the main boom itself.

[0053] Herein, the present invention has been described with reference to several embodiments and methods described solely to illustrate the many diverse possibilities that can be achieved by an auxiliary boom for a crane system, as well as methods for installing an auxiliary boom in a crane system according to the present invention.

[0054] Embodiments of the present invention will be described below with reference to the following. [Brief explanation of the drawing]

[0055] [Figure 1a] The side view shows an embodiment of the crane system without an auxiliary boom. [Figure 1b] A side view shows an embodiment of a crane system with an auxiliary boom. [Figure 2a] An embodiment of the auxiliary boom is shown. [Figure 2b] An embodiment of the auxiliary boom is shown. [Figure 3a] This shows an embodiment of a crane system having a main boom prepared to receive an auxiliary boom. [Figure 3b] This shows an embodiment of a crane system having a main boom prepared to receive an auxiliary boom. [Figure 4a] This shows a crane system that uses an installation method to install an auxiliary boom. [Figure 4b] This shows a crane system that uses an installation method to install an auxiliary boom. [Figure 4c] This shows a crane system that uses an installation method to install an auxiliary boom. [Figure 4d] This shows a crane system that uses an installation method to install an auxiliary boom. [Figure 4e] This shows a crane system that uses an installation method to install an auxiliary boom. [Figure 5a] Further embodiments of a crane system with an auxiliary boom are shown. [Figure 5b] Further embodiments of a crane system with an auxiliary boom are shown. [Figure 6]This embodiment shows how a moving mechanism is connected from the main boom to the auxiliary boom using a connecting means. [Figure 7] This shows the reconnection of the main boom's moving mechanism to the auxiliary boom 3. [Modes for carrying out the invention]

[0056] In the description of the drawings, the same or corresponding elements are given the same reference numerals in different drawings. Therefore, not all details are described in relation to each individual drawing / embodiment.

[0057] Embodiments of the present invention are described in the following detailed description. It should be understood that the scope of the present invention is not limited to the following description or shown in the drawings. Other embodiments of the present invention are possible and can be implemented or performed in various ways.

[0058] Figures 1a and 1b are side views showing embodiments of the crane system 1 with and without the auxiliary boom 3. The crane system 1 comprises a crane base 5 attached to a building 4. The crane system 1 may be installed on a building 4 such as a high-rise building, bridge, or wind turbine.

[0059] Figure 1a shows an embodiment of a crane system 1 having a main boom 2 prepared to receive an auxiliary boom 3. The main boom 2 may be an installation boom. The installation boom is used when installing the crane system. The main boom 2 comprises a tip 10, a base 11, and a boom section 12. The boom section 12 is positioned between the tip 10 and the base 12 of the main boom 2. The base 11 is attached to the upper end 8 of the crane base 5, and the lower end 9 of the crane base is attached to a structure 4. The crane system 1 includes a moving means 6 for moving the main boom 2 to a predetermined lifting position. The crane system 1 has a rotation center CR-M relative to the main boom. The crane system 1 includes a main wire 7 for lifting loads. One end of the main boom 2 is attached to the crane base. The length of the main boom 2 is measured along the longitudinal direction LM of the main boom.

[0060] Figure 1b shows an embodiment of crane system 1 in which an auxiliary boom 3 is connected to the main boom 2 and crane base 5. Crane system 1 can increase the load capacity and / or lift radius. The auxiliary boom 3 comprises a lifting end 13, a base end 14, and a boom section 15. The boom section 12 is positioned between the lifting end 10 and the base end 11. The auxiliary boom 3 encloses a portion of the main boom 2. The length of the auxiliary boom 3 is measured along the longitudinal direction LA of the auxiliary boom 3. The length of the auxiliary boom 3 is longer than the length of the main boom 2. The longitudinal direction LA of the auxiliary boom may be substantially parallel to the longitudinal direction LM of the main boom. Crane system 1 has a center of rotation CR-A relative to the auxiliary boom.

[0061] The auxiliary boom 3 also includes mounting means located at the base end 14 of the auxiliary boom 3. The mounting means is not shown in Figure 1b. The base end 14 of the auxiliary boom 3 is attached to the upper end 8 of the crane base 5. Alternatively, the base mounting means may be attached to the base end 11 of the main boom 2. The base mounting means may be attached near the rotation center CR-A of the auxiliary boom 3.

[0062] The auxiliary boom 3 is equipped with connecting means for connecting to the crane base and / or the moving means of the main boom 2, and the crane system 1 can control the auxiliary boom 3 by the moving means of the main boom 2.

[0063] The auxiliary boom 3 is equipped with a connecting means for connecting to the moving means 6 of the main boom. The crane system 1 can control the auxiliary boom by the moving means 6 provided on the main boom 2. The moving means 6 is detached from the main boom 2 and attached to the auxiliary boom 3 using the connecting means. The connecting means is not shown in Figure 1b. When the auxiliary boom 3 is installed in the crane system 1, the main wire 7 is positioned so that the auxiliary boom 3 can lift a load using the main wire 7.

[0064] Figures 2a and 2b show an embodiment of the auxiliary boom 3. The auxiliary boom 3 includes wire handling means 16 for handling the main wire 1 of the crane system 1 when the auxiliary boom 3 is installed in the crane system 1. If the auxiliary boom 3 is substantially the same length as the main boom 2, the main wire 7 may be positioned on a lifting grip relative to the wire handling means 16 at the lifting end 13 of the auxiliary boom. In this embodiment, the auxiliary boom 3 is longer than the main boom 2, and the auxiliary boom 3 is prepared to be lifted by the main wire 7 using further wire handling means 17 positioned at a predetermined location on the boom section 15. Now the crane system 1 is ready to lift the auxiliary boom 3 by the main wire 7. The wire handling means 16 handles the main wire 7 of the crane system 1 after the auxiliary boom 3 has been installed in the crane system 1 and while the crane system 1 is performing the lifting operation. If the auxiliary boom 3 is longer than the main boom 2, as in this example, the main wire 7 is handled by the wire handling means 16 via further wire handling means 17. The wire handling means 16 is equipped with a sheave, and the further wire handling means 17 is equipped with a sheave, thereby allowing the main wire 7 to roll back and forth with little resistance.

[0065] The auxiliary boom 3 is equipped with a tip engagement means 18. The tip engagement means 18 is positioned at a predetermined location away from the base mounting means 19 at the base end. The base mounting means 19 may have openings prepared for bolts or pins so that the auxiliary boom can be easily attached to the crane base 5. The tip mounting means 18 may be positioned at a predetermined location between the lifting end 13 and the base end 14 of the auxiliary boom 3. The predetermined location of the tip mounting means 18 is determined by the length of the auxiliary boom 3 relative to the length of the main boom 2. The tip mounting means 18 may be adjustable along the entire auxiliary boom 3 or along the lifting portion 20 of the auxiliary boom 3, as indicated by the arrows. The tip mounting means 18 can receive the tip 10 of the main boom at the engagement connection. The tip mounting means 18 can be releasably locked to the tip 10 of the main boom.

[0066] The auxiliary boom 3 is equipped with wire handling means 16. The wire handling means 16 is located at the lifting end. The wire handling means 16 is configured to receive the main wire 7 from the main boom 3. The main wire 7 can be controlled by the crane system 1 while it is operating to lift a load.

[0067] The auxiliary boom 3 comprises a first boom side and a second boom side of the boom section 15 of the auxiliary boom 3. The first boom section 15' and the second boom section 15'' are substantially parallel and can be positioned on either side of the main boom 2, partially enclosing the main boom 2. The base ends 14', 14'' of the first and second boom sides can also be positioned on either side of the crane base 5. The side ends of the first boom side and the side ends of the second boom side are positioned opposite their respective base ends near the lifting end 13. The side ends of the first boom side and the side ends of the second boom side are connected to, or are part of, the lifting section 20 at the lifting end 13.

[0068] Figures 3a and 3b show an embodiment of a crane system 1 having a main boom 2 prepared to receive an auxiliary boom 3. As shown in Figure 1a, the main boom 2 comprises a tip 10, a base 11, and a boom section 12. The base 11 is attached to the upper end 8 of the crane base 5. The crane base may comprise a plurality of crane base elements forming a crane base tower. A complementary engaging means 21 extends from the tip 10 of the main boom 2. The complementary engaging means 21 is engageable with a tip engaging means provided on the auxiliary boom 3. A main wire 7 extends from the crane base to the tip of the main boom 2. The main boom is connected to the crane base using further base mounting means 22.

[0069] Figures 4a, b, c, d, and e illustrate a crane system for installing an auxiliary boom using an installation method. As shown in Figure 4a, the crane system 1 is positioned on top of and partially inside a structure 4, such as a wind turbine nacelle. The crane system 1 comprises a crane base 5, a main boom 2, and a main wire 7. The main boom 2 is provided with complementary engaging means 21 extending from the tip 10 of the main boom 2. An auxiliary boom 3 is provided, which is longer than the main boom 2. The main wire 7 is attached to the wire handling means 16 of the auxiliary boom 3 of the lifting grip via further wire handling means 17 so that the auxiliary boom 3 is ready to be lifted. The main wire is first pulled to the wire handling means of the lifting end 13 of the auxiliary boom 3, passing through at least one further wire handling means 17 between the lifting end 13 and the base end 14 of the auxiliary boom 3.

[0070] The wire handling means 16 is a sheave, and the further wire handling means 17 comprises two sheaves, allowing the main wire 7 to roll back and forth with almost no resistance.

[0071] Figure 4b shows, indicated by arrows, the auxiliary boom 3 being lifted using only the main wire 7. The auxiliary boom 3 can be automatically positioned at its lifting position. The lifting position is determined by the center of gravity of the auxiliary boom relative to the further wire handling means 17. The tip engagement means 18 of the auxiliary boom 3 faces the crane system 1 even while being lifted. The main boom 2 reaches a position where it is boomed and gradually rises as the auxiliary boom 3 approaches the main boom 2.

[0072] Figure 4c shows the auxiliary boom 3 reaching the tip of the main boom 2. When the auxiliary boom 3 is held by the main wire 7, the auxiliary boom is positioned relative to the main boom so that the auxiliary boom 3 faces the main boom 2. By applying tension to the main wire 7, the lifting end of the auxiliary boom 3 is displaced to an elevated position relative to the main boom 2. When the lifting end of the auxiliary boom is displaced relative to the main boom 2, the complementary engagement means 21 at the tip of the main boom 2 is ready to receive the tip engagement means 18 of the auxiliary boom 3.

[0073] The complementary engaging means 21 at the tip of the main boom 2 and the tip engaging means 18 of the auxiliary boom 3 form a joint connected by the main wire 7 before the complementary engaging means 21 and the tip engaging means 18 are releasably locked to each other. The complementary engaging means 21 and the tip engaging means 18 form a pair of forces, which substantially form a pair of forces through the joint, moving the auxiliary boom 3 to the set position relative to the main boom 2 when the main wire 7 is under tension. The main boom 2 can be in a position between substantially horizontal and vertical when the auxiliary boom moves to a position substantially parallel to the main boom, and the joint angle φ between the main boom 2 and the auxiliary boom 3 decreases when the main wire 7 is under tension.

[0074] Figure 4d shows the tip engagement means of the auxiliary boom 3 reaching the complementary engagement means of the main boom 2. The crane system 1 can position the auxiliary boom 3 next to the main boom 2 while tensioning the main wire 7. The auxiliary boom 3 is positioned substantially parallel to the main boom 2 when tension is applied to the wire. The auxiliary boom 3 is positioned in an upright position substantially parallel to the main boom 2 and / or the crane base 5. The complementary engagement means 21 at the tip of the main boom 2 receives the tip engagement means 18 on the auxiliary boom 3 in a releaseable locked position. The upright position movement of the main boom 2 and the pendulum movement of the auxiliary boom 3 cause the base of the auxiliary boom to move simultaneously toward the crane base 5, which partially encloses the main boom 2. The upright position movement is understood as the movement when performing the operation of lifting the tip 10 of the main boom 2 relative to the base 11 of the main boom 2.

[0075] Figure 4e shows the auxiliary boom 3 being removably secured to the boom mounting bracket 23 of the crane base 5, enclosing a portion of the main boom 2. The mounting means 19 for the auxiliary boom 3 is used to removably secure the auxiliary boom 3 to the boom mounting bracket 23 on the crane base 5. Here, the auxiliary boom is attached to the main boom 2 and / or the crane base 5. The center of rotation of the auxiliary device is substantially the same as that of the main boom 2.

[0076] The main wire 7 is positioned in and / or through the wire handling means 16 of the auxiliary boom 3 such that the lifting capacity and radius of the crane system 1 are defined by the auxiliary boom while the main wire 7 is used to lift the load.

[0077] Figures 5a and 5b show further embodiments of the crane system 1 with the auxiliary boom 3 installed. The installation of the auxiliary boom is substantially the same as the installation described in Figures 4a, 4b, 4c, 4d, and 4e. The auxiliary boom 3 reaches the tip of the main boom 2. When the auxiliary boom 3 is held by the main wire 7, the auxiliary boom 3 is positioned relative to the main boom 2 so that the auxiliary boom faces the main boom 2. By applying tension to the main wire 7, the lifting end 13 of the auxiliary boom 3 is displaced to an elevated position relative to the main boom 2. When the lifting end 13 of the auxiliary boom 3 is displaced upward relative to the main boom 2, the complementary engaging means 21 at the tip of the main boom 2 is ready to receive the tip engaging means 18 on the auxiliary boom 3. The crane system 1 can position the auxiliary boom 3 next to the main boom 2 while tensioning the main wire 7. The auxiliary boom 3 is positioned substantially parallel to the main boom 2. The auxiliary boom 3 is positioned in an upright position substantially parallel to the main boom 2 and / or crane base 5 when the tip of the main boom 2 is lifted to a substantially vertical position above the crane base 5. The tip engaging means 18 on the auxiliary boom 3 slides upward and is received by the complementary engaging means 21 on the tip of the main boom 2. When tension is applied to the wire, the complementary engaging means 21 on the tip of the main boom 2 receives the tip engaging means 18 on the auxiliary boom 3 in a releaseable locked position. As the main boom 2 moves to the upright position and the auxiliary boom 3 moves, the base end 13 of the auxiliary boom moves toward the crane base 5 and simultaneously partially wraps around the main boom 2. The base of the auxiliary boom 3 is releaseably fixed to the crane system 1.

[0078] Figures 6a and 6b show embodiments in which a moving means 6 is connected from the main boom 2 to the auxiliary boom 3 using connecting means 24. The connecting means may include wire ropes or the like for connecting the moving means to the main boom 2 or the auxiliary boom 3. The moving means 6 may be driven by hydraulics, electricity and / or pneumatics. The crane system 1 controls two moving means 6. In Figure 6a, the moving means 6 and connecting means 24 are positioned at a first connection position relative to the moving means 6 and are attached to the main boom 2 and movable, so that the crane system 1 can control the movement of the main boom 2. In Figure 6b, the moving means 6 and connecting means 24 are positioned at a second connection position relative to the moving means 6 and are attached to the auxiliary boom 3 and movable, so that the crane system 1 can control the movement of the auxiliary boom 3.

[0079] Figure 7 shows the reconnection of the main boom 2's moving means 6 to the auxiliary boom 3. The auxiliary boom 3 is equipped with connecting means 24. The connecting means 24 is used to connect the main boom's moving means to the auxiliary boom 3, and the crane system can control the auxiliary boom 3 from the main boom 2 by the moving means 6. The crane system 1 can operate the auxiliary boom 3 using the moving means 6, provided that the moving means 6 is movably connected to the base end of the auxiliary boom 3. The longitudinal length of the auxiliary boom 3 is longer than the longitudinal length of the main boom 2. The auxiliary boom 3 at least partially encloses the base end 11 of the main boom 2. The crane system 1 lifts the load 26 using the main wire 7 with the auxiliary boom 3 in place. [Explanation of symbols]

[0080] 1. Crane System 2 Main boom 3. Auxiliary boom 4 Buildings 5. Crane base 6. Means of Transportation 7 Main wire 8. Top of the crane base 9. Bottom of the crane base 10. The tip of the main boom 11. Base of the main boom 12. The boom section of the main boom 13. Lifting end of auxiliary boom 14 Base of auxiliary boom 15. Boom section of the auxiliary boom 16 Wire handling means for handling the main wire 17. Further wire handling means for handling the main wire. 18 Tip engagement means 19. Mounting means for attaching to a crane base 20 Lifting section of auxiliary boom 21 Complementary Engagement Means 22 Further base mounting means 23 Boom mounting bracket 24 Connecting means for connecting to a means of transport 25 hooks 26 loads 27. Crane installation means

Claims

1. A method for installing an auxiliary boom on a crane system, The aforementioned crane system comprises a main boom, a crane base, a tip section, and a main wire. The above method involves the following steps: A step of providing the auxiliary boom, wherein the auxiliary boom comprises a lifting end, a base end, a boom section disposed between the lifting end and the base end, and at least one wire handling means. The wire handling means at the lifting end of the auxiliary boom includes the step of arranging the main wire on the lifting grip, A step of lifting the auxiliary boom using the main wire, wherein the lifting position of the auxiliary boom is determined by the center of gravity of the auxiliary boom, When the auxiliary boom is held by the main wire, the steps include positioning the auxiliary boom or a part of the auxiliary boom relative to the main boom, When the auxiliary boom is held by the main wire, the step of attaching the auxiliary boom to the main boom and / or the crane base at a position where the auxiliary boom or a part of the auxiliary boom is positioned along the main boom, A method comprising the steps of arranging the main wire in and / or via the wire handling means of the auxiliary boom, and using the main wire to lift a load, such that the lifting capacity of the crane system is defined by the auxiliary boom.

2. The method according to claim 1, further comprising the step of pulling the main wire to the wire handling means of the lifting end of the auxiliary boom via further wire handling means positioned between the lifting end and the base end of the auxiliary boom.

3. The method described above is A step of using the main wire to lift the auxiliary boom up to the tip of the main boom, The steps include positioning the auxiliary boom substantially parallel to the main boom while lifting the tip of the main boom relative to the base of the main boom, The method according to claim 1 or 2, further comprising the step of attaching the auxiliary boom to the main boom and / or crane base in a releaseable locked position while the auxiliary boom and the main boom are in an upright position.

4. The method according to claim 1, 2, or 3, further comprising the step of attaching the tip of the main boom to at least one tip engaging means provided on the auxiliary boom.

5. The method described above is The steps include attaching at least one means of moving the main boom to the auxiliary boom, The method according to any one of claims 1 to 4, further comprising the step of using a means of movement to operate the auxiliary boom.

6. An auxiliary boom for a crane system comprising a main boom, a crane base, a tip, at least one means of movement, and a main wire, The aforementioned auxiliary boom, A lifting end and a base end, and a boom section positioned between the lifting end and the base end, At least one base mounting means disposed at the base end, wherein the base mounting means is configured to be attached to the crane base, At least one tip engaging means positioned away from the base mounting means, wherein the tip engaging means is configured to receive the tip of the main boom in the engagement position, An auxiliary boom comprising at least one wire handling means, at least one of which is located at the lifting end, and the wire handling means is configured to receive the main wire from the main boom.

7. The auxiliary boom according to claim 6, wherein the tip engaging means is provided at the lifting end, or between the lifting end and the base end.

8. The auxiliary boom according to claim 6 or 7, wherein further wire handling means are positioned between the lifting end and the base end of the auxiliary boom, and the center of gravity of the auxiliary boom is positioned between the further wire handling means and the base end of the auxiliary boom.

9. The auxiliary boom according to any one of claims 6 to 8, wherein the auxiliary boom is configured to partially surround the main boom or a part of the main boom.

10. The auxiliary boom comprises first and second boom sides configured to be positioned on each side of the main boom, The base ends of the first and second boom sides are configured to be positioned on each side of the crane base. The first and second boom sides each have a side end opposite to the base end, The auxiliary boom according to any one of claims 6 to 9, wherein the side end is connected to the lifting section by the lifting end.

11. The base end is provided with at least one connecting means for attachment to the moving means of the crane base and / or main boom, The auxiliary boom according to any one of claims 6 to 10, which enables the crane system to control the movement of the auxiliary boom while it is in operation.

12. The crane system is equipped with a main boom and an auxiliary boom. The crane system is configured to have the auxiliary boom installed on the main boom of the crane. A building crane system for construction, wherein the auxiliary boom is configured to at least partially surround the base end of the main boom.

13. The crane system according to claim 12, wherein the longitudinal length of the auxiliary boom is longer than the longitudinal length of the main boom.

14. The crane system according to claim 12 or 13, wherein the auxiliary boom is configured to lift a load using a main wire.

15. The auxiliary boom is equipped with connecting means configured to connect to the moving means of the main boom, The crane system according to claim 12, 13, or 14, wherein the crane system is able to control the auxiliary boom by the moving means for the main boom.

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