Crane boom auxiliary dismounting device, crane boom mounting method and crane boom dismounting method

Abstract

The application provides a crane boom auxiliary dismounting device, a crane boom mounting method and a crane boom dismounting method. The crane boom auxiliary dismounting device comprises a plurality of support assemblies. The support assembly comprises a crossbeam, a support leg and a folding and unfolding driving device. The crossbeam comprises a crossbeam body and a first connecting part and two second connecting parts arranged at the two ends of the length direction of the crossbeam body, and the first connecting part is connected with the crane boom. The support leg comprises a telescopic support leg body and a third connecting part arranged thereon, and the two support legs are connected with the two ends of the crossbeam body through the third connecting parts and the second connecting parts respectively. The folding and unfolding driving device is connected with the crossbeam body and the support leg, drives the support leg to move relative to the crossbeam body, so that the crane boom auxiliary dismounting device has an unfolded state and a folded state. In the unfolded state, the two support legs extend along the height direction of the crossbeam body and form a door-shaped structure with the crossbeam body. In the folded state, the support leg extends along the length direction of the crossbeam body and is arranged side by side with the crossbeam body.

Description

Technical Field

[0001] This application relates to the field of lifting equipment technology, and in particular to a lifting boom auxiliary disassembly and assembly device, a lifting boom installation method, and a lifting boom disassembly method. Background Technology

[0002] Telescopic boom wheeled cranes, compared to other lifting equipment, can travel on roads and are characterized by their mobility, flexibility, and high efficiency. For ultra-large tonnage cranes, the crane main unit can weigh several hundred tons, and due to bridge loads and road regulations, it needs to be disassembled and relocated. Among these components, the boom accounts for a large proportion of the total weight of the crane main unit and is installed on the upper part of the crane main unit, making it the first component to consider for disassembly. It is transported separately from the main unit and then reassembled at the work site.

[0003] The disassembly and assembly of the boom of an ultra-large tonnage crane requires two 100-300 ton lifting devices. If the crane and related operators cooperate, the lifting devices need to be large in tonnage and numerous. Frequent relocation and disassembly consume a lot of time, manpower and lifting devices, resulting in high operating costs.

[0004] The above statements are for the purpose of providing background information in relation to this application only, and do not necessarily constitute prior art. Summary of the Invention

[0005] The purpose of this application is to provide a crane boom auxiliary assembly / disassembly device, a crane boom installation method, and a crane boom disassembly method, aiming to improve the economy of crane boom assembly / disassembly.

[0006] The first aspect of this application provides a crane boom auxiliary assembly / disassembly device, comprising multiple support components, each support component including: a crossbeam, comprising a crossbeam body and a first connecting portion disposed at the middle of the crossbeam body along its length direction and two second connecting portions respectively disposed at both ends of the crossbeam body along its length direction, the first connecting portion being configured to connect to the crane boom; outriggers, comprising a telescopic outrigger body and a third connecting portion disposed on the outrigger body, the two outriggers being respectively connected to both ends of the crossbeam body via their third connecting portions and the two second connecting portions; and a retraction / extension drive device, connected to the crossbeam body and the outriggers, configured to drive the outriggers to move relative to the crossbeam body, so that the crane boom auxiliary assembly / disassembly device has an extended state and a retracted state, in the extended state, the two outriggers extend along the height direction of the crossbeam body and form a gate-shaped structure with the crossbeam body, in the retracted state, the outriggers extend along the length direction of the crossbeam body and are arranged side by side with the crossbeam body.

[0007] In some embodiments of the crane boom auxiliary disassembly and assembly device, the first connecting part includes a plurality of first hooks disposed at the bottom of the crossbeam body in the unfolded state.

[0008] In some embodiments of the crane boom auxiliary assembly and disassembly device, the second connecting part includes at least one first connecting lug disposed at the end of the crossbeam body along its length; the third connecting part includes at least one second connecting lug disposed on the outrigger body and cooperating with the at least one first connecting lug.

[0009] In some embodiments of the crane boom auxiliary assembly and disassembly device, the extension and retraction drive device includes two drive mechanisms respectively corresponding to the two outriggers, and each drive mechanism is connected to the corresponding outrigger and one end of the crossbeam body.

[0010] In some embodiments of the crane boom auxiliary assembly and disassembly device, the drive mechanism includes a drive cylinder, the two ends of which are respectively hinged to the crossbeam body and the outrigger body.

[0011] In some embodiments of the lifting boom auxiliary disassembly and assembly device, the crossbeam further includes a fourth connecting portion, which is configured to connect with a lifting device when lifting the lifting boom auxiliary disassembly and assembly device.

[0012] In some embodiments of the crane boom auxiliary disassembly and assembly device, the fourth connecting part includes at least one second hook lug disposed on the top of the crossbeam body.

[0013] In some embodiments of the crane boom auxiliary assembly and disassembly device, the two second connecting parts of the crossbeam body are staggered in the width direction of the crossbeam body.

[0014] In some embodiments of the crane boom auxiliary assembly and disassembly device, the cross section of the main body of the crossbeam perpendicular to its height direction is a rhomboid structure, and the two second connecting parts are respectively arranged at the two acute angles of the rhomboid structure.

[0015] In some embodiments of the crane boom auxiliary disassembly and assembly device, in the retracted state, the two outrigger bodies are arranged side by side below the crossbeam body along the width direction of the crossbeam body.

[0016] In some embodiments of the crane boom auxiliary assembly / disassembly device, the crane boom auxiliary assembly / disassembly device further includes a longitudinal beam, and the plurality of support components are connected to the longitudinal beam in a parallel and spaced manner along the length direction of the longitudinal beam.

[0017] The second aspect of this application provides a method for installing a crane boom, using the crane boom auxiliary disassembly and assembly device described in the first aspect of this application. The method includes: lifting the crane boom auxiliary disassembly and assembly device using a hoisting device to place it in the extended state; hoisting the extended crane boom auxiliary disassembly and assembly device to a position where the crossbeam is above the crane boom; connecting the crane boom to the first connecting portion; raising the crane boom above the installation height by extending the outriggers; moving the crane mainframe to be connected to the crane boom below the crane boom; lowering the crane boom to the installation height by shortening the outriggers; connecting the crane boom to the crane mainframe; separating the crane boom auxiliary disassembly and assembly device from the crane boom; and removing the crane boom auxiliary disassembly and assembly device.

[0018] A third aspect of this application provides a method for disassembling a crane boom, using the crane boom auxiliary disassembly and assembly device described in the first aspect of this application to disassemble the crane boom from the crane host, comprising: using a hoisting device to lift the crane boom auxiliary disassembly and assembly device, so that the crane boom auxiliary disassembly and assembly device is in the unfolded state; hoisting the crane boom auxiliary disassembly and assembly device in the unfolded state to a position where the crossbeam is located above the crane boom connected to the crane host; connecting the crane boom to the first connecting part; separating the crane boom from the crane host; raising the crane boom to above the installation height by extending the outriggers; driving the crane host away from under the crane boom; lowering the crane boom onto the bearing surface by shortening the outriggers; separating the crane boom auxiliary disassembly and assembly device from the crane boom; and removing the crane boom auxiliary disassembly and assembly device.

[0019] Based on the boom auxiliary assembly / disassembly device provided in this application, it can be connected and disconnected from the boom in the extended state. When connected to the boom, the boom can be raised or lowered via the extension and retraction of outriggers, eliminating the need for a lifting device to lift the boom during the assembly / disassembly process with the crane main unit. This assists in the assembly / disassembly of the boom and crane main unit. Since the boom auxiliary assembly / disassembly device is independent of the boom and has a relatively small weight compared to a super-large boom, it can be assembled and disassembled using a single small-tonnage lifting device, eliminating the need for two large auxiliary lifting devices, thus improving economic efficiency. Furthermore, the boom auxiliary assembly / disassembly device and the boom can be transported separately, and the device can be in a retracted state during transport, occupying less space than in the extended state and ensuring that the transport dimensions do not exceed limits. Additionally, the boom auxiliary assembly / disassembly device does not need to be carried when the crane is under load, avoiding the adverse effects of the assembly / disassembly auxiliary system's own weight on lifting performance.

[0020] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a front view schematic diagram of the combined structure of the lifting boom auxiliary disassembly and assembly device and the lifting boom according to an embodiment of this application, wherein the lifting boom auxiliary disassembly and assembly device is in the unfolded state.

[0023] Figure 2 for Figure 1 The schematic diagram of the front view of the crane boom auxiliary disassembly and assembly device in the embodiment shown is shown in the retracted state.

[0024] Figure 3 for Figure 2 A top view of the crane boom auxiliary disassembly and assembly device of the embodiment shown.

[0025] Figure 4 for Figure 2 The illustrated embodiment shows a front view of the crane boom auxiliary disassembly and assembly device during a crane boom assembly process.

[0026] Figure 5 for Figure 2 The illustrated embodiment shows a side view of the crane boom auxiliary disassembly and assembly device in another state during the crane boom assembly process.

[0027] Figure 6 for Figure 2 The illustrated embodiment shows a side view of the crane boom auxiliary disassembly and assembly device in another state during the crane boom assembly process.

[0028] Figure 7 This is a side view of a crane boom auxiliary disassembly and assembly device according to an embodiment of this application, wherein the crane boom auxiliary disassembly and assembly device is in the unfolded state.

[0029] Figure 8 for Figure 7 The diagram shown is a top view of the crane boom auxiliary assembly / disassembly device, in which the device is in the unfolded state.

[0030] Figures 1 to 8 In the figures, the labels represent:

[0031] 1. Crane boom; 11. Crane boom body; 12. Crane boom connecting lug;

[0032] 2. Lifting boom auxiliary assembly / disassembly device; 20. Support assembly; 21. Crossbeam; 211. Crossbeam body; 212. First connecting part; 2121. First mounting lug; 213. Second connecting part; 2131. First connecting lug; 214. Fourth connecting part; 2141. Second mounting lug; 22. Outrigger; 221. Outrigger body; 222. Third connecting part; 2221. Second connecting lug; 23. Retraction / extension drive device; 231. Drive mechanism; 2311. Drive cylinder; 26. Longitudinal beam;

[0033] 3. Crane main unit;

[0034] 4. Flatbed cart;

[0035] X: Length direction of the main body of the beam; Y: Width direction of the main body of the beam; Z: Height direction of the main body of the beam;

[0036] G. Ground. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0039] In the description of this application, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0040] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] In the description of this application, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0042] Furthermore, in the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] This application provides a crane boom auxiliary assembly / disassembly device, a crane boom installation method, and a crane boom disassembly method.

[0044] like Figures 1 to 8 As shown, the crane boom auxiliary assembly / disassembly device 2 includes multiple support components 20. Each support component 20 includes a crossbeam 21, outriggers 22, and a retraction / extension drive device 23.

[0045] The crossbeam 21 includes a crossbeam body 211, a first connecting portion 212 disposed at the middle of the crossbeam body 211 in the length direction X, and two second connecting portions 213 respectively disposed at both ends of the crossbeam body 211 in the length direction X. The first connecting portion 212 is configured to connect to the lifting boom 1.

[0046] The outrigger 22 includes a retractable outrigger body 221 and a third connecting part 222 disposed on the outrigger body 221. The two outriggers 22 are connected to the two ends of the crossbeam body 211 respectively through their third connecting parts 222 and two second connecting parts 213.

[0047] The extension / retraction drive device 23 is connected to the crossbeam body 211 and the outriggers 22, and is configured to drive the outriggers 22 to move relative to the crossbeam body 211, so that the boom auxiliary assembly / disassembly device 2 has an extended state and a retracted state. In the extended state, the two outriggers 22 extend along the height direction Z of the crossbeam body 211 and form a gate-shaped structure with the crossbeam body 211. In the retracted state, the outriggers 22 extend along the length direction X of the crossbeam body 211 and are arranged side by side with the crossbeam body 211.

[0048] The boom auxiliary assembly / disassembly device 2 of this application embodiment can be connected to and disconnected from the boom 1 in the extended state. When connected to the boom 1, the boom 1 can be raised or lowered via the extension and retraction of the outriggers 22, eliminating the need for a lifting device to lift the boom 1 during the assembly / disassembly process between the boom 1 and the crane host 3. This assists in the assembly / disassembly of the boom 1 and the crane host 3. Since the boom auxiliary assembly / disassembly device 2 is independent of the boom 1, its weight is relatively small compared to a super-large boom. A single small-tonnage lifting device can complete the assembly / disassembly of the boom 1, eliminating the need for two large auxiliary lifting devices, thus improving economic efficiency. Furthermore, the boom auxiliary assembly / disassembly device 2 and the boom can be transported separately, and the boom can be retracted during transport, reducing the space occupied compared to the extended state and ensuring that the transport dimensions do not exceed limits. Additionally, the boom auxiliary assembly / disassembly device 2 is not required when the crane is under load, avoiding the adverse effects of the assembly / disassembly auxiliary system's own weight on lifting performance.

[0049] The number of multiple support components 20 is, for example, two, three, four, etc. When assembling or disassembling the boom 1, the multiple support components 20 are arranged side by side at intervals along the length of the boom 1.

[0050] like Figures 1 to 8 As shown, in some embodiments of the crane boom auxiliary disassembly and assembly device 2, the first connecting part 212 includes a plurality of first hooks 2121 disposed at the bottom of the crossbeam body 211 in the unfolded state.

[0051] Multiple first mounting ears 2121 facilitate the quick connection and separation of the lifting boom auxiliary disassembly and assembly device 2 and the lifting boom 1.

[0052] like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, in some embodiments of the lifting boom auxiliary assembly and disassembly device 2, the second connecting part 213 includes at least one first connecting lug 2131 disposed at the end of the crossbeam body 211 in the length direction X; the third connecting part 222 includes at least one second connecting lug 2221 disposed on the outrigger body 221 and cooperating with at least one first connecting lug 2131.

[0053] The second connecting part 213 includes at least one first connecting ear 2131, and the third connecting part 222 includes at least one second connecting ear 2221, which facilitates the quick connection and separation of the second connecting part 213 and the third connecting part 222, thereby facilitating the rapid change of the connection state of the outrigger 22 relative to the crossbeam body 211, and thus making it easy for the lifting boom auxiliary disassembly and assembly device 2 to quickly switch between the extended state and the retracted state.

[0054] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in some embodiments of the crane boom auxiliary disassembly and assembly device 2, the retraction drive device 23 includes two drive mechanisms 231 respectively corresponding to the two outriggers 22, and each drive mechanism 231 is connected to the corresponding outrigger 22 and one end of the crossbeam body 211.

[0055] Two drive mechanisms 231 are provided to drive the outriggers 22 to change their relative positions with the main body of the crossbeam 211.

[0056] In embodiments not shown, a drive mechanism can also be provided to simultaneously drive both outriggers 22 to change their relative positions with respect to the crossbeam body 211. For example, the simultaneous driving of both outriggers 22 can be achieved through the cooperation of a drive mechanism 231 and a transmission mechanism. The drive mechanism can be, for example, a motor, a hydraulic cylinder, a pneumatic cylinder, etc. The transmission mechanism can include, for example, a linkage mechanism, a gear pair, etc.

[0057] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in some embodiments of the lifting boom auxiliary disassembly and assembly device 2, the drive mechanism 231 includes a drive cylinder 2311, and the two ends of the drive cylinder 2311 are respectively hinged to the crossbeam body 211 and the outrigger body 221.

[0058] Using a drive cylinder 2311 as the drive mechanism 231 results in a simple structure, rapid response, and stable state switching.

[0059] like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, in some embodiments of the lifting boom auxiliary disassembly and assembly device 2, the crossbeam 21 further includes a fourth connecting part 214, which is configured to connect with the lifting device when lifting the lifting boom auxiliary disassembly and assembly device 2.

[0060] The fourth connecting part 214 is provided to facilitate the accurate positioning and connection between the lifting arm auxiliary disassembly and assembly device 2 and the hoisting device, and to facilitate the stable lifting of the lifting arm auxiliary disassembly and assembly device 2.

[0061] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in some embodiments of the crane boom auxiliary disassembly and assembly device 2, the fourth connection part 214 includes at least one second hook 2141 disposed on the top of the crossbeam body 211.

[0062] The fourth connection part 214 includes at least one second hook 2141, which facilitates the quick connection and separation of the lifting arm auxiliary disassembly and assembly device 2 and the hoisting device.

[0063] like Figure 3 , Figure 7 and Figure 8 As shown, in some embodiments of the crane boom auxiliary assembly and disassembly device 2, the two second connecting parts 213 of the crossbeam body 211 are staggered in the width direction Y of the crossbeam body 211.

[0064] The two second connecting parts 213 of the main body of the crossbeam 211 are staggered in the width direction Y of the main body of the crossbeam 211, which helps to prevent the two legs 22 from interfering when the crossbeam is retracted, and makes the lifting arm auxiliary disassembly and assembly device 2 occupy less space.

[0065] like Figure 3 , Figure 7 and Figure 8 As shown, in some embodiments of the crane boom auxiliary assembly and disassembly device 2, the cross section of the main body 211 of the crossbeam perpendicular to its height direction Z is a rhomboid structure, and the two second connecting parts 213 are respectively arranged at the two acute angles of the rhomboid structure.

[0066] The cross section of the main body of the beam 211 perpendicular to its height direction Z is a rhomboid structure. The two second connecting parts 213 are respectively set at the two acute angles of the rhomboid structure, which helps to ensure the load-bearing capacity of the main body of the beam 211 and reduce the material and weight of the main body of the beam 211 while realizing the staggered arrangement of the two second connecting parts 213 in the width direction Y of the main body of the beam 211.

[0067] like Figure 2 and Figure 3As shown, in some embodiments of the lifting boom auxiliary disassembly and assembly device 2, in the retracted state, two outrigger bodies 221 are arranged side by side below the crossbeam body 211 along the width direction Y.

[0068] In the retracted state, the two outrigger bodies 221 are arranged side by side below the crossbeam body 211 along the width direction Y. This helps to ensure that the center of gravity of the crane arm auxiliary disassembly and assembly device 2 is not too high in the retracted state, thereby ensuring the stability of the crane arm auxiliary disassembly and assembly device 2 during transportation and storage.

[0069] like Figure 7 and Figure 8 As shown, in some embodiments of the crane boom auxiliary assembly and disassembly device 2, the crane boom auxiliary assembly and disassembly device 2 also includes a longitudinal beam 26, and a plurality of support components 20 are connected to the longitudinal beam 26 in a parallel and spaced manner along the length direction of the longitudinal beam 26.

[0070] The lifting boom auxiliary assembly and disassembly device 2 includes multiple support components 20, which facilitates more stable support of the lifting boom 1 during assembly and disassembly, and also facilitates raising or lowering the lifting boom 1 in a horizontal state or adjusting the angle of the lifting boom 1 relative to the horizontal plane, thereby adapting to more complex assembly positions of the lifting boom 1.

[0071] The crane boom auxiliary assembly / disassembly device 2 includes a longitudinal beam 26, which helps to improve the stability of the crane boom auxiliary assembly / disassembly device 2.

[0072] The second aspect of this application provides a method for installing a crane boom, which uses the crane boom auxiliary disassembly and assembly device 2 of the first aspect of this application to install the crane boom 1, including: using a hoisting device to lift the crane boom auxiliary disassembly and assembly device 2 so that the crane boom auxiliary disassembly and assembly device 2 is in an extended state; hoisting the crane boom auxiliary disassembly and assembly device 2 in the extended state to a position above the crane boom 1 on the crossbeam 21; connecting the crane boom 1 to the first connecting part 212; raising the crane boom 1 to a height above the installation height by extending the outriggers 22; moving the crane host 3, which is to be connected to the crane boom 1, to a position below the crane boom 1; lowering the crane boom 1 to the installation height by shortening the outriggers 22; connecting the crane boom 1 to the crane host 3; separating the crane boom auxiliary disassembly and assembly device 2 from the crane boom 1, and removing the crane boom auxiliary disassembly and assembly device 2.

[0073] The third aspect of this application provides a method for disassembling a crane boom, which uses the crane boom auxiliary disassembly and assembly device 2 of the first aspect of this application to disassemble the crane boom 1 from the crane host 3, including: using a hoisting device to lift the crane boom auxiliary disassembly and assembly device 2 so that the crane boom auxiliary disassembly and assembly device 2 is in an extended state; lifting the crane boom auxiliary disassembly and assembly device 2 in the extended state to a position above the crane boom 1 connected to the crane host 3 on the crossbeam 21; connecting the crane boom 1 to the first connecting part 212; separating the crane boom 1 from the crane host 3; raising the crane boom 1 to above the installation height by extending the outriggers 22; driving the crane host 3 away from under the crane boom 1; lowering the crane boom 1 onto the bearing surface by shortening the outriggers 22; separating the crane boom auxiliary disassembly and assembly device 2 from the crane boom 1; and removing the crane boom auxiliary disassembly and assembly device 2.

[0074] The crane boom installation method and crane boom disassembly method of the present application embodiments both have the advantages of the crane boom auxiliary disassembly and assembly device 2 of the present application embodiments.

[0075] The following combination Figures 1 to 8 The lifting boom auxiliary disassembly and assembly device 2, the lifting boom installation method, and the lifting boom disassembly method of the embodiments of this application will be described in detail.

[0076] like Figures 1 to 6 As shown, the crane boom auxiliary assembly / disassembly device 2 in some embodiments of this application includes two support assemblies 20. The support assembly 20 includes a crossbeam 21, outriggers 22, and a retraction / extension drive device 23.

[0077] The crossbeam 21 includes a crossbeam body 211, a first connecting part 212 disposed in the middle of the crossbeam body 211 in the length direction X, two second connecting parts 213 disposed at both ends of the crossbeam body 211 in the length direction X, and a fourth connecting part 214 disposed at the top of the crossbeam body 211.

[0078] The first connecting portion 212 is configured to connect with the lifting boom 1. The first connecting portion 212 includes a plurality of first mounting lugs 2121 disposed at the bottom of the crossbeam body 211 in the extended state. For example... Figure 1 , 2 As shown in Figures 4 and 6, two first mounting ears 2121 are located below the bottom of the main body of the crossbeam 211, and the ear plates of the two first mounting ears 2121 are parallel to the length direction X of the main body of the crossbeam 211. Figure 3 and Figure 5 As shown, four first mounting ears 2121 are respectively disposed on both sides of the bottom of the crossbeam body 211 along the width direction Y, and the ear plates of the four first mounting ears 2121 are parallel to the width direction Y of the crossbeam body 211. The corresponding lifting arm includes a lifting arm body 11 and a plurality of lifting arm connecting ears 12 disposed on the top of the lifting arm body 11. The lifting arm 1 is connected to the first mounting ears 2121 through the lifting arm connecting ears 12.

[0079] Each second connecting portion 213 includes two first connecting ears 2131 disposed at the end of the crossbeam body 211 in the length direction X. In this embodiment, each second connecting portion 213 includes two first connecting ears 2131 arranged at intervals along the height direction Z of the crossbeam body 211.

[0080] The two second connecting parts 213 of the main body of the crossbeam 211 are staggered in the width direction Y of the main body of the crossbeam 211. The cross section of the main body of the crossbeam 211 perpendicular to its height direction Z is a rhomboid structure, and the two second connecting parts 213 are respectively located at the two acute angles of the rhomboid structure.

[0081] The fourth connection 214 is configured to connect with the lifting device when the lifting boom auxiliary disassembly and assembly device 2 is being lifted. The fourth connection 214 includes two second hooks 2141 disposed on the top of the crossbeam body 211.

[0082] The outrigger 22 includes a retractable outrigger body 221 and a third connecting part 222 disposed on the outrigger body 221.

[0083] The two support legs 22 are connected to the two ends of the crossbeam body 211 via their third connecting part 222 and two second connecting parts 213 respectively.

[0084] The third connecting part 222 includes two second connecting ears 2221 disposed on the leg body 221 and cooperating with at least one first connecting ear 2131. The two second connecting ears 2221 are arranged at intervals along the extending direction of the leg body 221.

[0085] The extension / retraction drive device 23 is connected to the crossbeam body 211 and the outriggers 22, and is configured to drive the outriggers 22 to move relative to the crossbeam body 211, so that the boom auxiliary assembly / disassembly device 2 has an extended state and a retracted state. In the extended state, the two outriggers 22 extend along the height direction Z of the crossbeam body 211 and form a gate-shaped structure with the crossbeam body 211. In the retracted state, the outriggers 22 extend along the length direction X of the crossbeam body 211 and are arranged side by side with the crossbeam body 211.

[0086] The retraction drive device 23 includes two drive mechanisms 231 corresponding to the two outriggers 22, each drive mechanism 231 being connected to a corresponding outrigger 22 and a corresponding end of the crossbeam body 211. Each drive mechanism 231 includes a drive cylinder 2311, with both ends of the drive cylinder 2311 hinged to the crossbeam body 211 and the outrigger body 221, respectively. Specifically, the drive cylinder 2311 is a hydraulic cylinder.

[0087] In the retracted state, the two support legs 221 are arranged side by side below the crossbeam body 211 along the width direction Y.

[0088] Figures 7 to 8 A crane boom auxiliary disassembly and assembly device 2 according to another embodiment of this application is shown.

[0089] In this embodiment, the crane boom auxiliary assembly / disassembly device 2 includes two support components 20 and a longitudinal beam 26. The two support components 20 are connected to the longitudinal beam 26 side-by-side at intervals along its length. The longitudinal beam 26 is located at the middle of the crossbeam 21 along its length. Each crossbeam 21 is perpendicular to the longitudinal beam 26.

[0090] Figure 7 and Figure 8 For parts not shown, please refer to Figures 1 to 6 Related explanations.

[0091] In the extended state, the outrigger 22 and the crossbeam 21 of this embodiment are connected by pins passing through the upper first connecting lug 2131 and the second connecting lug 2221, and by pins passing through the lower first connecting lug 2131 and the second connecting lug 2221. During the transition from the extended state to the retracted state, and while in the retracted state, the outrigger 22 and the crossbeam 21 are hinged by pins passing through the lower first connecting lug 2131 and the second connecting lug 2221.

[0092] The crane boom installation method in this embodiment adopts... Figures 1 to 6 The lifting arm auxiliary disassembly and assembly device 2 in the embodiment shown is used to install the lifting arm 1.

[0093] Crane boom installation methods include:

[0094] Use flatbed truck 4 to move the crane boom 1 to the designated position.

[0095] A crane is used as a lifting device to lift a support component 20 of the lifting arm auxiliary disassembly and assembly device 2. Before lifting, the outrigger 22 and the crossbeam 21 are hinged by a pin passing through the first connecting ear 2131 and the second connecting ear 2221 located below. During the lifting process, the outrigger 22 naturally unfolds to the vertical due to gravity, so that the lifting arm auxiliary disassembly and assembly device 2 is in the unfolded state.

[0096] The crane lifts the extended boom auxiliary disassembly and assembly device 2 to the crossbeam 21 above the boom 1, and inserts pins into the first connecting lug 2131 and the second connecting lug 2221 located above, so that the outriggers 22 are fixedly connected to the crossbeam 21, and the bottom ends of the two outriggers 22 are supported on the ground G.

[0097] By moving the support assembly 20 along the length of the boom 1 and extending and retracting the outriggers 22 to adjust the relative position of the crossbeam 21 and the boom 1, the position of the first connecting ear 2131 of the crossbeam body 211 is aligned with the boom connecting ear 12 of the boom 1. A pin passes through the first connecting ear 2131 and the corresponding boom connecting ear 12 to connect the boom 1 and the first connecting part 212, thereby connecting the boom 1 and the crossbeam 21.

[0098] Following the aforementioned method, the other support assembly 20 is lifted into its extended state, and the outrigger 22 and crossbeam 21 are fixed, connecting the crossbeam 21 to the boom 1. The two support assemblies 20 are spaced apart along the length of the boom 1.

[0099] like Figure 4 As shown, the boom 1 is raised above the installation height by extending the outriggers 22, as... Figure 5 As shown, the flatbed truck 4 will be driven away.

[0100] like Figure 6 As shown, the crane host 3, which is to be connected to the boom 1, is driven to the bottom of the boom 1.

[0101] like Figure 6 As shown, the boom 1 is lowered to the installation height by shortening the outrigger 22.

[0102] Connect the boom 1 to the crane host 3.

[0103] Pull out the pin that passes through the first connecting ear 2131 and the corresponding boom connecting ear 12, separate the boom auxiliary disassembly and assembly device 2 from the boom 1, and use a crane to lift away the boom auxiliary disassembly and assembly device 2.

[0104] Switch the crane boom auxiliary disassembly and assembly device 2 to the retracted state.

[0105] use Figures 7 to 8 The crane boom installation method of the crane boom auxiliary disassembly and assembly device 2 in the embodiment shown can be referred to in the previous embodiment.

[0106] The crane boom disassembly method in this application is based on the present application. Figures 1 to 6 The boom detachment device 2 of the embodiment shown detaches the boom 1 from the crane host 3.

[0107] Crane boom disassembly methods include:

[0108] A crane is used as a lifting device to lift a support component 20 of the lifting arm auxiliary disassembly and assembly device 2. Before lifting, the outrigger 22 and the crossbeam 21 are hinged by a pin passing through the first connecting ear 2131 and the second connecting ear 2221 located below. During the lifting process, the outrigger 22 naturally unfolds to the vertical due to gravity, so that the lifting arm auxiliary disassembly and assembly device 2 is in the unfolded state.

[0109] The crane lifts the extended boom auxiliary disassembly and assembly device 2 to the crossbeam 21 above the boom 1 connected to the crane host 3. Pins are inserted into the first connecting lug 2131 and the second connecting lug 2221 located above to achieve a fixed connection between the outrigger 22 and the crossbeam 21, so that the bottom ends of the two outriggers 22 are supported on the ground G.

[0110] By moving the support assembly 20 along the length of the boom 1 and extending and retracting the outriggers 22 to adjust the relative position of the crossbeam 21 and the boom 1, the position of the first connecting ear 2131 of the crossbeam body 211 is aligned with the boom connecting ear 12 of the boom 1. A pin passes through the first connecting ear 2131 and the corresponding boom connecting ear 12 to connect the boom 1 and the first connecting part 212, thereby connecting the boom 1 and the crossbeam 21.

[0111] Following the aforementioned method, the other support assembly 20 is lifted into its extended state, and the outrigger 22 and crossbeam 21 are fixed, connecting the crossbeam 21 to the boom 1. The two support assemblies 20 are spaced apart along the length of the boom 1.

[0112] Separate the lifting boom 1 from the crane main unit 3.

[0113] The boom 1 is raised above the installation height by extending the outriggers 22.

[0114] Drive the crane main unit 3 away from under the crane arm 1.

[0115] Drive the flatbed truck 4 under the boom 1, and lower the boom 1 onto the load-bearing surface of the flatbed truck 4 by shortening the outriggers 22;

[0116] Pull out the pin that passes through the first connecting ear 2131 and the corresponding boom connecting ear 12, separate the boom auxiliary disassembly and assembly device 2 from the boom 1, and use a crane to lift away the boom auxiliary disassembly and assembly device 2.

[0117] Switch the crane boom auxiliary disassembly and assembly device 2 to the retracted state.

[0118] use Figures 7 to 8 The lifting arm disassembly and assembly device 2 of the illustrated embodiment can be used to disassemble the lifting arm 1 by referring to the lifting arm disassembly method of the aforementioned embodiment.

[0119] Those skilled in the art will understand that, in the methods described in the specific embodiments, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0120] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this application.

Claims

1. A crane boom auxiliary assembly / disassembly device (2), characterized in that, Includes multiple support components (20), said support component (20) including: The crossbeam (21) includes a crossbeam body (211) and a first connecting part (212) disposed at the middle of the crossbeam body (211) in the length direction (X) and two second connecting parts (213) respectively disposed at both ends of the crossbeam body (211) in the length direction (X). The first connecting part (212) is configured to connect with the lifting boom (1). The outriggers (22) include a retractable outrigger body (221) and a third connecting portion (222) disposed on the outrigger body (221). Two outriggers (22) are respectively connected to both ends of the crossbeam body (211) via their third connecting portions (222) and two second connecting portions (213). The extension / retraction drive device (23), connected to the crossbeam body (211) and the outriggers (22), is configured to drive the outriggers (22) to move relative to the crossbeam body (211) so that the lifting arm auxiliary disassembly / retraction device (2) has an extended state and a retracted state. In the extended state, the two outriggers (22) extend along the height direction (Z) of the crossbeam body (211) and form a gate-shaped structure with the crossbeam body (211). In the retracted state, the outriggers (22) extend along the length direction (X) of the crossbeam body (211) and are arranged side by side with the crossbeam body (211).

2. The crane boom auxiliary disassembly and assembly device (2) according to claim 1, characterized in that, The first connecting part (212) includes a plurality of first hooks (2121) disposed at the bottom of the crossbeam body (211) in the unfolded state.

3. The crane boom auxiliary disassembly and assembly device (2) according to claim 1, characterized in that, The second connecting part (213) includes at least one first connecting lug (2131) disposed at the end of the beam body (211) in the length direction (X). The third connecting part (222) includes at least one second connecting ear (2221) disposed on the leg body (221) and cooperating with the at least one first connecting ear (2131).

4. The crane boom auxiliary disassembly and assembly device (2) according to claim 1, characterized in that, The retraction drive device (23) includes two drive mechanisms (231) respectively corresponding to the two legs (22), and each drive mechanism (231) is connected to the corresponding leg (22) and one end of the crossbeam body (211).

5. The crane boom auxiliary disassembly and assembly device (2) according to claim 4, characterized in that, The drive mechanism (231) includes a drive cylinder (2311), the two ends of which are hinged to the crossbeam body (211) and the leg body (221), respectively.

6. The crane boom auxiliary disassembly and assembly device (2) according to claim 1, characterized in that, The crossbeam (21) also includes a fourth connecting part (214), which is configured to connect with the lifting device when lifting the boom auxiliary disassembly device (2).

7. The crane boom auxiliary disassembly and assembly device (2) according to claim 6, characterized in that, The fourth connection (214) includes at least one second hook (2141) disposed on the top of the beam body (211).

8. The lifting boom auxiliary disassembly and assembly device (2) according to any one of claims 1 to 7, characterized in that, The two second connecting parts (213) of the main body of the beam (211) are staggered in the width direction (Y) of the main body of the beam (211).

9. The crane boom auxiliary disassembly and assembly device (2) according to claim 8, characterized in that, The cross section of the main body of the beam (211) perpendicular to its height direction (Z) is a rhomboid structure, and the two second connecting parts (213) are respectively set at the two acute angles of the rhomboid structure.

10. The crane boom auxiliary disassembly and assembly device (2) according to any one of claims 1 to 7, characterized in that, In the retracted state, the two support legs (221) are arranged side by side below the crossbeam body (211) along the width direction (Y).

11. The crane boom auxiliary disassembly and assembly device (2) according to any one of claims 1 to 7, characterized in that, The lifting boom auxiliary disassembly and assembly device (2) also includes a longitudinal beam (26), and the plurality of support components (20) are connected to the longitudinal beam (26) side by side at intervals along the length direction of the longitudinal beam (26).

12. A method for installing a crane boom, characterized in that, The crane boom (1) is installed using the crane boom auxiliary disassembly and assembly device (2) according to any one of claims 1 to 11, comprising: The lifting boom auxiliary disassembly and assembly device (2) is lifted using a hoisting device, so that the lifting boom auxiliary disassembly and assembly device (2) is in the unfolded state; The crane boom auxiliary disassembly and assembly device (2) in the unfolded state is hoisted to the crossbeam (21) above the crane boom (1); Connect the lifting arm (1) to the first connecting part (212); The boom (1) is raised above the installation height by extending the outriggers (22); The crane main unit (3) to be connected to the boom (1) is driven to the bottom of the boom (1); The lifting boom (1) is lowered to the installation height by shortening the outrigger (22); Connect the lifting boom (1) to the crane host (3); Separate the lifting boom auxiliary disassembly and assembly device (2) from the lifting boom (1) and remove the lifting boom auxiliary disassembly and assembly device (2).

13. A method for disassembling a crane boom, characterized in that, The method of disassembling the boom (1) from the crane host (3) using the boom auxiliary disassembly device (2) according to any one of claims 1 to 11 includes: The lifting boom auxiliary disassembly and assembly device (2) is lifted using a hoisting device, so that the lifting boom auxiliary disassembly and assembly device (2) is in the unfolded state; The extended boom auxiliary disassembly and assembly device (2) is hoisted to the crossbeam (21) above the boom (1) connected to the crane host (3); Connect the lifting arm (1) to the first connecting part (212); Separate the lifting boom (1) from the crane host (3); The boom (1) is raised above the installation height by extending the outriggers (22); Drive the crane main unit (3) away from under the crane boom (1); The lifting boom (1) is lowered onto the bearing surface by shortening the outrigger (22); Separate the lifting boom auxiliary disassembly and assembly device (2) from the lifting boom (1) and remove the lifting boom auxiliary disassembly and assembly device (2).

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