Inner support structure of cantilever crane

Abstract

The invention provides an inner support structure of a cantilever crane, and relates to the technical field of engineering machinery. The structure comprises a supporting seat; the multiple wedge-shaped sliding blocks are sequentially connected in the extending direction of the supporting base, the wedge-shaped sliding block located on the head portion or the tail portion is connected with the supporting base, and the wedge-shaped sliding blocks can move relative to the supporting base; and the multiple tight supporting assemblies are movably connected with the supporting base, and at least one tight supporting assembly is movably arranged on the side face of each wedge-shaped sliding block. According to the structure, when the tight supporting assembly abuts against the inner wall of the arm support, the tight supporting assembly provides supporting force for the side plate of the arm support in the arm support, the problem that the side plate of the arm support is prone to being concaved inwards during rivet welding is solved, meanwhile, after the device is placed in the arm support, the tight supporting assembly abuts against the inner wall of the arm support under driving of the wedge-shaped sliding block, and therefore the side plate of the arm support is prevented from being damaged. And after the side plate is corrected to be concave inwards, the device can be taken out only by separating the supporting assembly from the inner wall of the arm support, and the operation is simple.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, and in particular to a boom internal support structure. Background Technology

[0002] In the field of construction machinery manufacturing, rectangular cross-section booms are widely used in tower cranes, aerial work platforms, and engineering vehicles due to their high structural strength and large space utilization. These booms are typically constructed from two bent plates joined together or four side plates joined at corners, with a hollow internal structure and a relatively long length (usually several meters to over ten meters). During the riveting and welding process, the side plates of the boom require precise positioning and fixing to ensure the accuracy of the cross-sectional dimensions, the uniformity of the weld gap, and the consistency of the welding quality.

[0003] In existing technologies, the riveting and positioning of rectangular cross-section booms mainly relies on manual operation. Manual solutions for concave parts typically involve welding bolts to the outer surface of the bending plate or side plate, and then correcting the concavity by pulling out the bolts. Alternatively, a support plate can be installed inside the boom.

[0004] However, manual operation is inconvenient. Summary of the Invention

[0005] This application provides an internal support structure for a boom to solve the problem of inconvenient operation.

[0006] On one hand, this application provides a boom internal support structure, including:

[0007] Support base;

[0008] Multiple wedge-shaped sliders are connected sequentially along the extension direction of the support base, and the wedge-shaped sliders located at the head or tail are connected to the support base, and the wedge-shaped sliders are movable relative to the support base;

[0009] Multiple tensioning components are provided, each of which is movably connected to the support base. At least one tensioning component is movably disposed on the side of each wedge slider. The tensioning component is configured to move away from or toward the support base when the wedge slider moves, driven by the wedge slider, so as to abut or dismount from the inner wall of the boom.

[0010] In one possible implementation, this application provides a boom internal support structure in which the side of the wedge-shaped slider is inclined from one end of the wedge-shaped slider toward the other end;

[0011] The wedge-shaped slider has a groove on its side, and the extension direction of the groove is consistent with the moving direction of the wedge-shaped slider. The tensioning component is inserted into the groove and slidably connected to it.

[0012] And / or, the two ends of the wedge-shaped slider are respectively provided with a first connecting part and a second connecting part, and the first connecting part of the wedge-shaped slider located at the head or tail is connected to the support base;

[0013] It also includes multiple connectors, through which the first connecting portion of one of two adjacent wedge sliders and the second connecting portion of the other are connected.

[0014] In one possible implementation, this application provides a boom internal support structure, wherein the slide includes at least one horizontal section and at least one inclined section, the horizontal section and the inclined section being connected in sequence.

[0015] In one possible implementation, this application provides a boom internal support structure, wherein one end of the connector is a ball head, the other end of the connector has a third connecting portion, the second connecting portion and the third connecting portion are detachably connected, and the first connecting portion is hinged to the ball head.

[0016] In one possible implementation, this application provides a boom internal support structure, wherein the tensioning assembly includes a tensioning head and a spherical member disposed on the tensioning head, the spherical member being rotatable relative to the tensioning head, the spherical member being located within the slide groove, and the tensioning head being inserted into the support base.

[0017] In one possible implementation, this application provides a boom internal support structure, wherein the tensioning head includes a tensioning part and an extension part disposed on the tensioning part, the tensioning part and the extension part are detachably connected, the spherical member is disposed on the tensioning part, and the extension part is used to abut against the boom.

[0018] In one possible implementation, this application provides a boom internal support structure, wherein the support base includes a housing and a mounting support base, the mounting support base is connected to the housing, the housing is movably connected to the tensioning assembly, and the mounting support base is disposed on one end face of the housing.

[0019] In one possible implementation, the boom internal support structure provided in this application further includes a drive assembly, which includes a drive cylinder, a mounting sleeve, a mounting shaft, and a base. The base is connected to the mounting support seat, the mounting shaft is connected to the base, the mounting shaft is connected to the drive cylinder, the drive cylinder is connected to the first connecting part, the mounting shaft is connected to the mounting sleeve, and the mounting sleeve is connected to the housing.

[0020] In one possible implementation, the boom inner support structure provided in this application further includes a sliding sleeve assembly, the sliding sleeve assembly including a pressure plate, a sliding sleeve and a sealing ring, the sliding sleeve being inserted into the housing, the sealing ring being connected to the sliding sleeve, the pressure plate being connected to the sealing ring, and the sliding sleeve assembly being sleeved on the tensioning assembly;

[0021] It also includes sliding pads, with four sliding pads on each side of the wedge-shaped slider, and eight sliding pads arranged symmetrically, the sliding pads being connected to the housing.

[0022] In one possible implementation, the boom internal support structure provided in this application further includes a rolling assembly, which includes a rolling sleeve and a spherical rolling head disposed on the rolling sleeve. The spherical rolling head is rotatable relative to the rolling sleeve. The rolling sleeve is connected to the housing and the rolling sleeve is connected to the connector. The spherical rolling head is used for rolling contact with the inside of the boom.

[0023] This application provides a boom internal support structure, which includes a support base, multiple wedge-shaped sliders, and multiple tensioning components. The wedge-shaped sliders are connected sequentially along the extension direction of the support base, with the first or last wedge-shaped slider connected to the support base and movable relative to it. The multiple tensioning components are movably connected to the support base, with at least one tensioning component movably mounted on the side of each wedge-shaped slider. When the wedge-shaped slider moves towards the extension direction of the support base, the tensioning components move away from or towards the support base, abutting or disengaging from the inner wall of the boom. When the tensioning components abut against the inner wall of the boom, they provide support force to the boom side plates inside the boom, solving the problem of easy inward concavity of the boom side plates during riveting and welding. Furthermore, after the device is placed inside the boom, the tensioning components move under the action of the wedge-shaped sliders, abutting against the inner wall of the boom. After correcting the inward concavity of the side plates, simply disengaging the tensioning components from the inner wall of the boom and removing the device is sufficient, making the operation simple. Furthermore, the tensioning component is movably connected to the support base, and the tensioning component can extend or retract to different lengths relative to the support base, which can adapt to different specifications of booms. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 This application provides a structural schematic diagram of an internal support structure for a boom.

[0026] Figure 2 for Figure 1 Structural diagram of the structure excluding the support base;

[0027] Figure 3for Figure 1 Schematic diagram of the middle support base;

[0028] Figure 4 for Figure 2 Schematic diagram of the structure of the middle wedge slider;

[0029] Figure 5 for Figure 2 A cross-sectional diagram from another direction;

[0030] Figure 6 This is a cross-sectional schematic diagram of the first wedge-shaped slider;

[0031] Figure 7 for Figure 6 A schematic diagram of the structure of the first connecting part;

[0032] Figure 8 This is a schematic diagram of the cross-sectional structure of the wedge slider excluding the head wedge slider;

[0033] Figure 9 for Figure 7 A schematic diagram of the structure of the first connecting part;

[0034] Figure 10 for Figure 2 A cross-sectional structural diagram of the central bracing component;

[0035] Figure 11 for Figure 8 Schematic cross-sectional view of the central bracing section;

[0036] Figure 12 for Figure 8 Schematic diagram of the extended section;

[0037] Figure 13 for Figure 2 Schematic diagram of the middle connector;

[0038] Figure 14 for Figure 2 Schematic diagram of the cross-sectional structure of the middle sliding sleeve assembly;

[0039] Figure 15 for Figure 2 Schematic diagram of the middle sliding pad;

[0040] Figure 16 for Figure 2 A cross-sectional structural diagram of the scrolling component in the diagram;

[0041] Figure 17 This is an assembly diagram of a wedge-shaped slider;

[0042] Figure 18 A schematic diagram of the structure when the supporting component is located in the inclined section;

[0043] Figure 19 for Figure 18 A cross-sectional diagram of the boom;

[0044] Figure 20 A schematic diagram showing the structure when the support component is located in the horizontal section;

[0045] Figure 21 for Figure 20 A schematic diagram of the cross-section in the boom.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100 - Support base; 110 - Housing; 120 - Mounting support base;

[0048] 200-Wedge slider; 210-Groove; 211-Horizontal section; 212-Inclined section; 213-Mounting hole;

[0049] 220 - First connecting part; 220a - First ball joint cover; 220b - Second ball joint cover;

[0050] 230 - Second connecting part;

[0051] 300 - Tensioning component; 310 - Tensioning head;

[0052] 311-Stabilizing part; 3111-Horizontal groove; 3112-Vertical groove; 3113-Oil injection hole;

[0053] 312 - Extended part; 3121 - Locking part; 320 - Spherical part;

[0054] 400 - Connector; 410 - Ball head; 420 - Third connecting part;

[0055] 500 - Drive assembly; 510 - Drive cylinder; 520 - Mounting sleeve; 530 - Mounting shaft; 540 - Base;

[0056] 600 - Sliding sleeve assembly; 610 - Pressure plate; 620 - Sliding sleeve; 630 - Sealing ring;

[0057] 700 - Sliding pad; 710 - Oil delivery tank; 720 - First mounting part; 730 - Second mounting part;

[0058] 800 - Rolling assembly; 810 - Rolling sleeve; 820 - Spherical rolling head;

[0059] 900-boom.

[0060] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions 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, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application according to the specific circumstances.

[0063] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0064] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0065] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0066] Unless otherwise stated, the term "multiple" means two or more.

[0067] In the field of construction machinery manufacturing, rectangular cross-section booms are widely used in tower cranes, aerial work platforms, and engineering vehicles due to their high structural strength and large space utilization. These booms are typically constructed from two bent plates joined together or four side plates joined at corners, with a hollow internal structure and a relatively long length (usually several meters to over ten meters). During the riveting and welding process, the side plates of the boom require precise positioning and fixing to ensure the accuracy of the cross-sectional dimensions, the uniformity of the weld gap, and the consistency of the welding quality.

[0068] In existing technologies, the riveting and positioning of rectangular cross-section booms mainly relies on manual operation. Manually addressing concave parts typically involves welding bolts to the outer surface of the bending plate or side plate, and then correcting the concavity by pulling the bolts. Alternatively, a support plate can be installed inside the boom. However, manual operation requires installing bolts on the side plate of the boom, then pulling the bolts to correct the concavity, and finally removing the bolts after correction. This process is time-consuming and inconvenient.

[0069] This application provides a boom internal support structure, which includes a support base, multiple wedge-shaped sliders, and multiple tensioning components. The wedge-shaped sliders are connected sequentially along the extension direction of the support base, with the first or last wedge-shaped slider connected to the support base and movable relative to it. Multiple support components are movably connected to the support base, and at least one tensioning component is movably mounted on the side of each wedge-shaped slider. When the wedge-shaped slider moves towards the extension direction of the support base, the tensioning components move away from or towards the support base to abut or disengage from the inner wall of the boom. When the tensioning components abut against the inner wall of the boom, they provide support force to the boom side plates inside the boom, solving the problem of easy inward concavity of the boom side plates during riveting and welding. Furthermore, after the device is placed inside the boom, the tensioning components move under the action of the wedge-shaped sliders, causing them to abut against the inner wall of the boom. After correcting the inward concavity of the side plates, simply disengage the tensioning components from the inner wall of the boom and remove the device; the operation is simple. Furthermore, the tensioning component is movably connected to the support base, and the tensioning component can extend or retract to different lengths relative to the support base, which can adapt to different specifications of booms.

[0070] The embodiments of this application are described below with reference to the accompanying drawings.

[0071] Reference Figures 1 to 21 As shown, in some embodiments, this embodiment includes: a support base 100; a plurality of wedge-shaped sliders 200, the plurality of wedge-shaped sliders 200 being connected sequentially along the extension direction of the support base 100, and the wedge-shaped sliders 200 located at the head or tail being connected to the support base 100, and the wedge-shaped sliders 200 being movable relative to the support base 100.

[0072] Multiple tensioning components 300 are movably connected to the support base 100. At least one tensioning component 300 is movably disposed on the side of each wedge slider 200. The tensioning component 300 is configured to move away from or toward the support base 100 when the wedge slider 200 moves, so as to abut or dismount from the inner wall of the boom 900.

[0073] In this embodiment, the support base 100 can be made of wear-resistant and lightweight material, which reduces the weight of this embodiment while meeting the support strength requirements. The support base 100 bears and limits the load of this embodiment, provides a fixed assembly reference for the boom internal support structure provided in this application, and at the same time, the support base 100 can limit the excessive displacement of other internal structures during the movement process, preventing the internal structure from failing due to misalignment.

[0074] The wedge slider 200 is a streamlined structure formed in one piece. The wedge slider 200 can be a centrally symmetrical structure. The wedge slider 200 can be made of wear-resistant and fatigue-resistant material to ensure that the wedge slider 200 can work stably for a long time during movement. The wedge slider 200 is the core guiding and force transmission component in this embodiment, and realizes load transmission when working in this embodiment.

[0075] The tensioning component 300 can be made of wear-resistant and fatigue-resistant material. The tensioning component 300 is the core working component in this embodiment. When working in this embodiment, the tensioning component 300 abuts against or disengages from the inner wall of the boom 900 to support the inner wall of the boom 900, thereby solving the problem that the inner wall of the boom 900 is prone to concavity.

[0076] In specific implementation, multiple wedge-shaped sliders 200 are connected sequentially along the extension direction of the support base 100, and the wedge-shaped sliders 200 located at the head or tail are connected to the support base 100. The wedge-shaped sliders 200 can move relative to the support base 100. It can be understood that multiple wedge-shaped sliders 200 can move along the extension direction of the support base 100. Multiple tensioning components 300 are movably connected to the support base 100. That is, the tensioning components 300 can move relative to the support base 100. At least one tensioning component 300 is movably arranged on the side of each wedge-shaped slider 200. When the wedge-shaped slider 200 moves along the extension direction of the support base 100, the tensioning component 300 moves away from or towards the support base 100 under the drive of the wedge-shaped slider 200, so as to abut or disengage from the inner wall of the boom 900. That is, when the wedge-shaped slider 200 moves, the tensioning component 300 moves in the direction perpendicular to the movement of the wedge-shaped slider 200.

[0077] This application provides a boom internal support structure, which includes a support base 100, multiple wedge-shaped sliders 200, and multiple tensioning components 300. The multiple wedge-shaped sliders 200 are connected sequentially along the extension direction of the support base 100, and the wedge-shaped sliders 200 located at the head or tail are connected to the support base 100. The wedge-shaped sliders 200 can move relative to the support base 100. The multiple tensioning components 300 are all movably connected to the support base 100, and at least one tensioning component 300 is movably arranged on the side of each wedge-shaped slider 200. When the wedge slider 200 moves toward the extension direction of the support base 100, the tensioning component 300 moves away from or toward the support base 100 under the action of the wedge slider 200, so as to abut or disengage from the inner wall of the boom 900. When the tensioning component 300 abuts with the inner wall of the boom 900, the tensioning component 300 provides support force to the side plate of the boom 900 inside the boom 900, which solves the problem that the side plate of the boom 900 is prone to concavity during riveting and welding. At the same time, after this device is placed inside the boom 900, the tensioning component 300 moves under the action of the wedge slider 200, so that the tensioning component 300 abuts with the inner wall of the boom 900. After correcting the concavity of the side plate, you only need to disengage the tensioning component 300 from the inner wall of the boom 900 and take out the device. The operation is simple. Furthermore, the tensioning component 300 is movably connected to the support base 100, and the tensioning component 300 can extend or retract to different lengths relative to the support base 100, which can be adapted to different specifications of boom 900.

[0078] Reference Figures 4 to 9 As shown, in some embodiments, the side of the wedge slider 200 is inclined from one end of the wedge slider 200 to the other end; a groove 210 is provided on the side of the wedge slider 200, the extension direction of the groove 210 is consistent with the moving direction of the wedge slider 200, and the tensioning component 300 is partially inserted into the groove 210 and slidably connected with the groove 210.

[0079] The wedge slider 200 has a first connecting part 220 and a second connecting part 230 at its two ends respectively. The first connecting part 220 of the wedge slider 200 located at the head or tail is connected to the support base 100. This embodiment also includes a plurality of connectors 400, and the first connecting part 220 of one of two adjacent wedge sliders 200 and the second connecting part 230 of the other are connected by connectors 400.

[0080] In this embodiment, the side of the wedge slider 200 is inclined from one end to the other. It can be understood that one end face of the wedge slider 200 is smaller than the other end face in the length direction. The wedge slider 200 can be a centrally symmetrical structure. A groove 210 is provided on the side of the wedge slider 200. The arm 900 has a rectangular cross-section, thus allowing grooves 210 to be provided on all four sides of the wedge slider 200. The extending direction of the groove 210 is consistent with the moving direction of the wedge slider 200. The tensioning component 300 is partially inserted into the groove 210 and slidably connected to it.

[0081] In practical implementation, the length of the slide groove 210 can be the same as the length of the wedge slider 200. When the wedge slider 200 moves, the part of the tensioning component 300 inserted into the slide groove 210 slides in the slide groove 210 under the drive of the wedge slider 200, so as to abut or disengage from the inner wall of the boom 900, thereby supporting the inner wall of the boom 900. This solves the problem of the side plate of the boom 900 being prone to concavity. The structure is simple and the operation is convenient. The tensioning component 300 can extend or retract to different lengths relative to the support seat 100 in the slide groove 210, which can be adapted to booms 900 of different specifications.

[0082] In addition, in order to connect multiple wedge-shaped sliders 200 sequentially along the extending direction of the support base 100, a first connecting portion 220 and a second connecting portion 230 are respectively provided at both ends of the wedge-shaped slider 200. The first connecting portion 220 of the wedge-shaped slider 200 located at the head is connected to the support base 100, and the head wedge-shaped slider 200 is as follows: Figure 6 As shown, the first connecting portion 220 of the head wedge-shaped slider 200 is as follows Figure 7 As shown, the second connecting portion 230 of the wedge-shaped slider 200 at the tail is connected to the support base 100, and the wedge-shaped slider 200 at the tail is as follows: Figure 8 As shown, the wedge-shaped sliders 200 at both ends are connected to the support base 100 in this way.

[0083] To connect multiple wedge-shaped sliders 200 excluding the head and tail, this embodiment also includes multiple connectors 400. Two adjacent wedge-shaped sliders 200 are sequentially connected along the extension direction of the support base 100, wherein the first connecting portion 220 of one and the second connecting portion 230 of the other are connected by the connectors 400. It can be understood that the connection direction of two adjacent wedge-shaped sliders 200 is consistent with that of the head or tail wedge-shaped slider 200. For example, the first connecting portion 220 of the head wedge-shaped slider 200 is connected to the support base 100, and the second connecting portion 230 of the head wedge-shaped slider 200 is connected to the first connecting portion 220 of the wedge-shaped slider 200 adjacent to the head wedge-shaped slider 200. By connecting them sequentially, the wedge-shaped sliders 200 are sequentially connected along the extension direction of the support base 100.

[0084] Reference Figures 4 to 9 As shown, in some embodiments, the chute 210 includes at least one horizontal segment 211 and at least one inclined segment 212, the horizontal segment 211 and the inclined segment 212 being connected in sequence.

[0085] In a specific implementation, the slide 210 includes at least one horizontal segment 211 and at least one inclined segment 212, which are connected in sequence. For example, one end of an inclined segment 212 starts from the end with the smaller upper surface in the length direction of the wedge slider 200, and the other end of the inclined segment 212 is connected to a horizontal segment 211. The horizontal segment 211 is then connected to an inclined segment 212, and so on, until it is connected to the end with the larger upper surface in the length direction of the wedge slider 200.

[0086] like Figure 18 As shown, the tensioning assembly 300 is located in the inclined section 212, at which point the tensioning assembly 300 is disengaged from the boom 900, as... Figure 19 As shown. When the wedge slider 200 moves toward the -x direction, the tensioning assembly 300 moves away from the -x direction under the action of the wedge slider 200. The inclined section 212 is used to extend the tensioning assembly 300, and the tensioning assembly 300 moves from the inclined section 212 to the horizontal section 211, as shown. Figure 20 As shown, at this time, the tensioning assembly 300 abuts against the inner wall of the boom 900, as... Figure 21 As shown, the horizontal segment 211 is used to hold the tensioning assembly 300 in its current position, ensuring that the tensioning assembly 300 continuously abuts against the inner wall of the boom 900 in this position.

[0087] The portion of the tensioning component 300 inserted in the slide groove 210 moves along the connected horizontal section 211 and inclined section 212, enabling the tensioning component 300 to move toward or away from the support base 100 in the inclined section 212, and to abut or dismount from the inner wall of the boom 900 in the horizontal section 211. This solves the problem of the side plate of the boom 900 being prone to inward concavity and is easy to operate.

[0088] Reference Figure 2 and Figure 13 As shown, in some embodiments, one end of the connector 400 is a ball head 410, and the other end of the connector 400 has a third connecting portion 420. The second connecting portion 230 and the third connecting portion 420 are detachably connected, and the first connecting portion 220 is hinged to the ball head 410.

[0089] In this embodiment, one end of the connector 400 is a ball head 410, and the other end has a third connecting portion 420. The third connecting portion 420 can be a threaded hole embedded in the connector 400. Two adjacent wedge-shaped sliders 200 are connected through the connector 400. That is, the second connecting portion 230 of one of the two adjacent wedge-shaped sliders 200 is connected to the third connecting portion 420. The second connecting portion 230 and the third connecting portion 420 can be connected by screws. The first connecting portion 220 is hinged to the ball head 410. That is, the first connecting portion 220 can be a first ball hinge cap 220a and a second ball hinge cap 220b adapted to the ball head 410, such as... Figure 8 and Figure 9 As shown, the first ball joint cover 220a is installed on one end of the wedge slider 200 away from the second connecting part 230. The first ball joint cover 220a is connected to the second ball joint cover 220b, and the second ball joint cover 220b is connected to the ball head 410. The ball joint pair formed by the second ball joint cover 220b and the ball head 410 can offset the misalignment error generated by the connection in this embodiment.

[0090] In this embodiment, the first connecting portion 220 of the wedge-shaped slider 200 at the head is connected to the support base 100, thus the first connecting portion 200 of the wedge-shaped slider 200 at the head can be a connecting pin adapted to connect with the support base 100, such as... Figure 6 and Figure 7 As shown, this is to achieve connection with the support base 100.

[0091] Reference Figure 10 As shown, in some embodiments, the tensioning assembly 300 includes a tensioning head 310 and a spherical member 320 disposed on the tensioning head 310. The spherical member 320 is rotatable relative to the tensioning head 310 and is located in the slide groove 210. The tensioning head 310 is inserted into the support base 100.

[0092] In a specific implementation, the tensioning assembly 300 includes a tensioning head 310 and a spherical member 320 disposed on the tensioning head 310. The tensioning head 310 can be a cylindrical structure made of wear-resistant and fatigue-resistant material. The diameter of the spherical member 320 is adapted to the end face diameter in the length direction of the tensioning head 310, and the spherical member 320 can rotate relative to the tensioning head 310. The spherical member 320 is located in the slide groove 210, and the tensioning head 310 is inserted into the support base 100.

[0093] In order to place the spherical component 320 within the groove 210, and to ensure that the spherical component 320 moves within the groove 210 without detaching from it, the opening of the groove 210 is smaller than the diameter of the spherical component 320. In this embodiment, on the side of the larger end face along the length direction of the wedge-shaped slider 200, a mounting hole 213 adapted to the diameter of the spherical component 320 is formed at the apex of the groove 210. Figure 5As shown, this facilitates the placement of the spherical part 320 within the slide groove 210 and ensures that the spherical part 320 does not detach from the slide groove 210 when moving within it.

[0094] Reference Figures 10 to 12 As shown, in some embodiments, the tensioning head 310 includes a tensioning part 311 and an extension part 312 disposed on the tensioning part 311. The tensioning part 311 and the extension part 312 are detachably connected. A spherical member 320 is disposed on the tensioning part 311, and the extension part 312 is used to abut against the boom 900.

[0095] In a specific implementation, the tensioning head 310 includes a tensioning part 311 and an extension part 312 disposed on the tensioning part 311. The tensioning part 311 and the extension part 312 are detachably connected. In this embodiment, a horizontal groove 3111 and a vertical groove 3112 are provided at one end of the tensioning part 311 along its length. The vertical groove 3112 is located on the inner wall along the axial direction. The bottom end of the vertical groove 3112 is a horizontal groove 3111 that is perpendicularly connected to the vertical groove 3112. The bottom of the extension part 312 can be a locking part 3121 that is adapted to the vertical groove. When adapting to the inner wall of a boom 900 of different specifications, the locking part 3121 at the bottom of the extension part 312 is inserted into the inner wall of the tensioning part 311 along the vertical groove 3112. The extension part 312 is rotated to screw the locking part 3121 into the horizontal groove 3111 to achieve locking. This lengthens the tensioning assembly 300 to adapt to booms 900 of different specifications.

[0096] The spherical part 320 is disposed at one end of the support part 311 away from the vertical groove 3112 in the length direction. The extended part 312 is used to abut or disengage from the inner wall of the boom 900. The spherical part 320 moves in the slide groove 210, thereby achieving support for the inner wall of the boom 900 and solving the problem of easy inward concavity of the side plate of the boom 900.

[0097] In some embodiments, the tensioning part 311 is further provided with an oil injection hole 3113 for injecting lubricating oil into the interior of the tensioning part 311, so as to lubricate the spherical part 320 when it rotates relative to the tensioning part 311, thereby reducing the friction between the spherical part 320 and the tensioning part 311.

[0098] Reference Figure 1 and Figure 3 As shown, in some embodiments, the support base 100 includes a housing 110 and a mounting support base 120. The mounting support base 120 is connected to the housing 110, and the housing 110 is movably connected to the tensioning assembly 300. The mounting support base 120 is disposed on one end face of the housing 110.

[0099] In this embodiment, the support base 100 includes a housing 110 and a mounting support base 120. The housing 110 can be made of a lightweight and wear-resistant material, and can be a cuboid structure with a rectangular cross-section similar to the boom 900, facilitating movement and retrieval within the boom 900 in this embodiment. The mounting support base 120 is connected to the housing 110 and is disposed on one end face of the housing 110 along its length. The wedge slider 200 and the connector 400 are both disposed inside the housing. The wedge slider 200 can move along the inner wall of the housing. The housing 110 is movably connected to the tensioning assembly 300, meaning that the tensioning assembly 300 is inserted into the housing 110. The tensioning assembly 300 extends or retracts relative to the housing 110, restricting the position of the tensioning assembly 300 and preventing it from shifting during movement.

[0100] Reference Figure 2 As shown, in some embodiments, this embodiment further includes a drive assembly 500, which includes a drive cylinder 510, a mounting sleeve 520, a mounting shaft 530, and a base 540. The base 540 is connected to the mounting support 120, the mounting shaft 530 is connected to the base 540, the mounting shaft 530 is connected to the drive cylinder 510, the drive cylinder 510 is connected to the first connecting part 220, the mounting shaft 530 is connected to the mounting sleeve 520, and the mounting sleeve 520 is connected to the housing 110.

[0101] In a specific implementation, this embodiment also includes a drive assembly 500, which provides the power for the movement of the wedge-shaped slider 200. The drive assembly 500 includes a drive cylinder 510, a mounting sleeve 520, a mounting shaft 530, and a base 540. The base 540 is connected to the mounting support 120. The mounting shaft 530 is mounted on the base 540, and mounting sleeves 520 are provided at both ends of the mounting shaft 530 along its length. The mounting sleeves 520 are connected to the housing 110. One end of the drive cylinder 510 is connected to the mounting shaft 530, and the other end of the drive cylinder 510 is connected to the first connecting part 220 of the first wedge-shaped slider 200. When the drive cylinder 510 extends or retracts, it drives the wedge-shaped slider 200 to move away from or towards the drive cylinder 510, thereby enabling the tensioning assembly 300 to abut against or disengage from the inner wall of the abutment arm 900.

[0102] Reference Figure 1 and Figure 14 As shown, in some embodiments, this embodiment also includes a sliding sleeve assembly 600, which includes a pressure plate 610, a sliding sleeve 620 and a sealing ring 630. The sliding sleeve 620 is inserted into the housing 110, the sealing ring 630 is connected to the sliding sleeve 620, the pressure plate 610 is connected to the sealing ring 630, and the sliding sleeve assembly 600 is sleeved on the tensioning assembly 300.

[0103] This embodiment also includes sliding pads 700. Four sliding pads 700 are provided on each side of the wedge slider 200, and the eight sliding pads 700 are symmetrically arranged. The sliding pads 700 are connected to the housing 110.

[0104] This embodiment also includes a sliding sleeve assembly 600, which can be a hollow cylindrical structure. The sliding sleeve assembly 600 is used to insert into the housing 110 at the extended or retracted position of the supporting assembly 300, and plays a guiding role in the extension and retraction of the supporting assembly 300. The sliding sleeve assembly 600 includes a pressure plate 610, a sliding sleeve 620, and a sealing ring 630. The sliding sleeve 620 is inserted into the housing 110. The sealing ring 630 is provided on the end of the sliding sleeve 620 away from the wedge-shaped slider 200 in the length direction, and is pressed firmly onto the sliding sleeve 620 by the pressure plate 610, thereby guiding the supporting assembly 300 and preventing the supporting assembly 300 from deviating during movement.

[0105] In a specific implementation, this embodiment also includes sliding pads 700. Each wedge slider 200 has four sliding pads 700 on each opposite side. The four sliding pads 700 are symmetrically arranged with respect to the supporting components 300 on that side. The sliding pads 700 are connected to the housing 110 through the second mounting part 730 and to the wedge slider 200 through the first mounting part 720. The sliding pads 700 restrict the wedge slider 200 to the center position of the housing 110, ensuring that the wedge slider 200 moves along the length direction of the housing 110 when it moves, and preventing the wedge slider 200 from deviating and failing.

[0106] In some embodiments, the sliding pad 700 is also machined with an oil channel 710 for storing lubricating oil as lubrication for the wedge slider 200 during movement.

[0107] Reference Figure 2 and Figure 16 As shown, in some embodiments, this embodiment also includes a rolling assembly 800, which includes a rolling sleeve 810 and a spherical rolling head 820 disposed on the rolling sleeve 810. The spherical rolling head 820 is rotatable relative to the rolling sleeve 810. The rolling sleeve 810 is connected to the housing 110 and the connecting member 400. The spherical rolling head 820 is used for rolling contact with the inside of the boom 900.

[0108] In a specific implementation, this embodiment also includes a rolling assembly 800, which is located on the housing 110 at one end away from the mounting support 120. The rolling assembly 800 includes a rolling sleeve 810 and a spherical rolling head 820 disposed on the rolling sleeve 810. The rolling sleeve 810 can be cylindrical, with one end connected to the housing 110 along its length. The spherical rolling head 820 is disposed at the end away from the end connected to the housing 110 and is used for rolling contact with the interior of the boom 900. The rolling assembly 800 cooperates with the drive assembly 500 to allow the wedge-shaped slider 200 to move within the housing 110, thereby allowing the tensioning assembly 300 to move relative to the housing 110, abutting or disengaging from the inner wall of the boom 900, providing support for the side plate of the boom 900, and solving the problem of the side plate of the boom 900 easily becoming concave.

[0109] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A boom internal support structure, characterized in that, include: Support base (100); Multiple wedge-shaped sliders (200) are connected sequentially along the extension direction of the support base (100), and the wedge-shaped sliders (200) located at the head or tail are connected to the support base (100), and the wedge-shaped sliders (200) are movable relative to the support base (100); Multiple tensioning components (300) are movably connected to the support base (100). At least one tensioning component (300) is movably disposed on the side of each wedge slider (200). The tensioning component (300) is configured to move away from or toward the support base (100) when the wedge slider (200) moves, so as to abut or dismount from the inner wall of the boom (900).

2. The boom internal support structure according to claim 1, characterized in that, The side of the wedge-shaped slider (200) is inclined from one end to the other. The wedge-shaped slider (200) has a groove (210) on its side. The extension direction of the groove (210) is consistent with the moving direction of the wedge-shaped slider (200). The tensioning component (300) is partially inserted into the groove (210) and slidably connected to the groove (210). And / or, the two ends of the wedge slider (200) are respectively provided with a first connecting part (220) and a second connecting part (230), and the first connecting part (220) of the wedge slider (200) located at the head or tail is connected to the support base (100); It also includes a plurality of connectors (400), through which the first connecting portion (220) of one of two adjacent wedge sliders (200) and the second connecting portion (230) of the other are connected.

3. The boom internal support structure according to claim 2, characterized in that, The chute (210) includes at least one horizontal section (211) and at least one inclined section (212), which are connected in sequence.

4. The boom internal support structure according to claim 2, characterized in that, One end of the connector (400) is a ball head (410), and the other end of the connector (400) has a third connecting part (420). The second connecting part (230) and the third connecting part (420) are detachably connected, and the first connecting part (220) is hinged to the ball head (410).

5. The boom internal support structure according to claim 2, characterized in that, The tensioning assembly (300) includes a tensioning head (310) and a spherical member (320) disposed on the tensioning head (310). The spherical member (320) is rotatable relative to the tensioning head (310). The spherical member (320) is located in the groove (210). The tensioning head (310) is inserted into the support base (100).

6. The boom internal support structure according to claim 5, characterized in that, The tensioning head (310) includes a tensioning part (311) and an extension part (312) disposed on the tensioning part (311). The tensioning part (311) and the extension part (312) are detachably connected. The spherical part (320) is disposed on the tensioning part (311). The extension part (312) is used to abut against the boom (900).

7. A boom internal support structure according to any one of claims 2-6, characterized in that, The support base (100) includes a housing (110) and a mounting support base (120). The mounting support base (120) is connected to the housing (110). The housing (110) is movably connected to the tensioning assembly (300). The mounting support base (120) is disposed on one end face of the housing (110).

8. The boom internal support structure according to claim 7, characterized in that, It also includes a drive assembly (500), which includes a drive cylinder (510), a mounting sleeve (520), a mounting shaft (530), and a base (540). The base (540) is connected to the mounting support (120), the mounting shaft (530) is connected to the base (540), the mounting shaft (530) is connected to the drive cylinder (510), the drive cylinder (510) is connected to the first connecting part (220), the mounting shaft (530) is connected to the mounting sleeve (520), and the mounting sleeve (520) is connected to the housing (110).

9. The boom internal support structure according to claim 7, characterized in that, It also includes a sliding sleeve assembly (600), which includes a pressure plate (610), a sliding sleeve (620) and a sealing ring (630). The sliding sleeve (620) is inserted into the housing (110), the sealing ring (630) is connected to the sliding sleeve (620), the pressure plate (610) is connected to the sealing ring (630), and the sliding sleeve assembly (600) is sleeved on the tensioning assembly (300). It also includes sliding pads (700), with four sliding pads (700) on each side of the wedge slider (200), and eight sliding pads (700) arranged symmetrically. The sliding pads (700) are connected to the housing (110).

10. The boom internal support structure according to claim 7, characterized in that, It also includes a rolling assembly (800), which includes a rolling sleeve (810) and a spherical rolling head (820) disposed on the rolling sleeve (810). The spherical rolling head (820) is rotatable relative to the rolling sleeve (810). The rolling sleeve (810) is connected to the housing (110) and the rolling sleeve (810) is connected to the connector (400). The spherical rolling head (820) is used for rolling contact with the inside of the boom (900).

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