Supporting structure and crane

Abstract

The supporting structure comprises a guide rail, a sliding block base, a variable-amplitude telescopic oil cylinder and a main arm, the guide rail is provided with a sliding rail, and the sliding block base is movably installed in the sliding rail; the number of the variable-amplitude telescopic oil cylinders is two, one end of each variable-amplitude telescopic oil cylinder is hinged to the sliding block base, and the other end of each variable-amplitude telescopic oil cylinder is hinged to one side of the main arm. According to the structure, the variable-amplitude telescopic oil cylinders are arranged on the two sides of the main arm, so that a stable three-point supporting structure is formed, the sidewise bending phenomenon of the main arm in the operation process is effectively prevented, the risk of rollover during hoisting is reduced, and the operation stability and safety of the crane are improved. The utility model further discloses a crane.

Description

Technical Field

[0001] The utility model relates to a supporting structure, in particular to a supporting structure of a luffing oil cylinder. Background Art

[0002] Wheeled cranes are widely used in various construction and engineering operations. Their mobility and lifting capacity make them essential construction machinery. However, during lifting operations, wheeled cranes are subject to a variety of complex loads, with side loads being a significant factor affecting their safety and operational stability. Side loads refer to the additional lateral loads borne by the crane during the lifting process. These loads typically arise from external factors such as wind, lateral movement of the load, uneven ground support, or improper operation.

[0003] Side loads have a direct impact on the dynamic performance of wheeled cranes. Because crane structures are primarily designed for vertical load capacity, heavy side loads can cause the crane's main boom to tilt, compromising the stability and operational accuracy of the entire equipment. During the lifting process, if the main boom tilts, it not only shifts the position of the hoisted object but can also cause overall equipment instability, posing a significant safety hazard.

[0004] In related technology, wheeled cranes typically utilize a dual-luffing cylinder configuration, where the luffing cylinders and the main boom are located in the same plane. However, this configuration lacks effective lateral support, leaving the main boom supported only by the boom's tail end and the luffing cylinders when side loads are present. This can easily lead to the main boom tilting. Furthermore, since the two luffing cylinders are difficult to precisely synchronize in actual operation, there's a risk of lateral deflection of the main boom, reducing stability during the lifting process. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a support structure that can effectively prevent the main arm from bending sideways during operation and reduce the risk of rollover during lifting.

[0006] The utility model provides a supporting structure, including a guide rail, a slider base, a luffing telescopic oil cylinder and a main arm, wherein the guide rail has a sliding track, and the slider base can be movably installed in the sliding track; two luffing telescopic oil cylinders are provided, one end of the luffing telescopic oil cylinder is hinged to the slider base, and the other end of the luffing telescopic oil cylinder is hinged to one side of the main arm.

[0007] In one embodiment, the sliding track is a symmetrical track, and the symmetry axis of the symmetrical track coincides with the axis of the main arm.

[0008] In one embodiment, the sliding track is a ring-shaped symmetrical track.

[0009] In an embodiment, a bottom spherical hinge support is further included, which is mounted on the slider base and is hinged with one end of the amplitude telescopic oil cylinder through the bottom spherical hinge support.

[0010] In an embodiment, a top spherical hinge support is further included, which is arranged on the side of the main arm and is hinged with the amplitude telescopic oil cylinder through the top spherical hinge support.

[0011] In an embodiment, a plurality of connecting hole positions are reserved along the axis on both sides of the main arm, and the top spherical hinge support is detachably mounted in any connecting hole position.

[0012] The utility model also provides a crane, including the support structure as above, still include vehicle control system, and this system includes controller and hydraulic assembly who communicates with the controller.

[0013] In an embodiment, the slider base bottom is further provided with an execution component, which is in communication connection with the controller.

[0014] In an embodiment, the guide rail is detachably mounted on the rotating platform of the crane.

[0015] The utility model provides a support structure, through setting up amplitude telescopic oil cylinder on both sides of main arm, formed stable three point support structure, effectively prevented the phenomenon of side bending of main arm in the operation process, reduced the risk of rollover when lifting, improved the operation stability and safety of crane.In addition, the amplitude cylinder is hinged with the slider base, and the slider base can move flexibly in the sliding rail, and the position of the slider base can be adjusted in real time when the main arm bends to the side, so as to weaken or eliminate the bending phenomenon and improve the accuracy of the lifting operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment, should be understood, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0017] Figure 1 The front view of the support structure in the operating state provided by the first embodiment of the utility model.

[0018] Figure 2 The side view of the support structure in the operating state provided by the first embodiment of the utility model.

[0019] Figure 3This is a top view of the support structure provided by the second embodiment of the present invention in the working state.

[0020] Figure 4 This is a front view of the support structure provided by the first embodiment of the present invention in its initial state.

[0021] Figure 5 This is a top view of the support structure provided by the first embodiment of the present invention in its initial state.

[0022] Figure 6 This is a structural schematic diagram of the main arm and mounting holes provided in the fourth embodiment of the present utility model.

[0023] Reference numerals:

[0024] 1. Guide rail; 2. Slider base; 3. Bottom ball joint support; 4. Luffing and telescopic cylinder; 5. Top ball joint support; 6. Main arm; 11. Sliding track; 61. Connection holes. DETAILED DESCRIPTION

[0025] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0026] In the description of this utility model, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0027] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0028] The terms "first," "second," "third," etc. are merely used to distinguish between elements of similar nature and do not indicate or imply relative importance or a particular order.

[0029] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0030] First embodiment

[0031] Please refer to Figures 1 to 2 The first embodiment of the present invention provides a support structure comprising a guide rail 1, a slider base 2, a telescopic cylinder 4, and a main boom 6. The guide rail 1 is mounted on the turntable of the wheeled crane and rotates with the turntable. The slider base 2 is slidably mounted within a sliding track 11 of the guide rail 1. The telescopic cylinder 4 is hinged at one end to the slider base 2 and at the other end to one side of the main boom 6.

[0032] During operation, if the main boom 6 experiences lateral deflection due to external side loads, the position of the slider base 2 can be adjusted to change the support point of the luffing and telescopic cylinder 4, thereby compensating for the main boom 6's torque. This adjustable position of the slider base 2 ensures the support structure's adaptability during operation, enabling real-time adjustments based on actual loads and external interference, thereby reducing or eliminating lateral deflection and improving the crane's operational stability.

[0033] Preferably, both sides of the main arm 6 are hinged with variable-length telescopic cylinders 4. When the main arm 6 is operating, the two variable-length telescopic cylinders 4 can provide supporting force in two directions. The two cooperate with the tail of the main arm 6 (that is, the arm root of the main arm 6) to form a stable three-point support structure, which can effectively prevent the main arm 6 from bending sideways during operation and reduce the risk of rollover during lifting.

[0034] In this embodiment, the sliding track 11 is a linear track. The slider bases 2 corresponding to the two luffing and telescoping cylinders 4 are respectively mounted on different linear tracks. These two linear tracks are symmetrically arranged on either side of the main arm 6. This linear track arrangement not only facilitates linear adjustment of the slider base 2 but also meets the requirements of most standard lifting operations.

[0035] The first embodiment of the present invention also provides a crane comprising the aforementioned support structure and an onboard control system comprising a controller and a hydraulic assembly in communication with the controller, the hydraulic assembly being used to provide power to the telescopic cylinder 4. An actuator is also provided at the bottom of the slider base 2. This actuator is in communication with the controller and is used to control the movement of the slider base 2 within the slide track 11 based on signals from the controller. The slider bases 1 on the left and right sides of the main arm 6 can achieve inconsistent travel within the slide track 11, allowing adjustments to be made during high-tonnage load lifting, reducing or eliminating lateral deflection.

[0036] Specifically, the initial state of the crane is as follows Figures 4 and 5In the retracted state shown, in this state, the elevation angle β of the main arm 6 is 0°, the slider base 2 is located at the end of the sliding track 11, and the variable-length telescopic cylinder 4 is in a fully retracted state. When the crane starts working, the controller first sends a signal to the actuator to control the slider base 2 to move to the appropriate position. The controller then sends a signal to the hydraulic component to control the variable-length telescopic cylinder 4 to extend and retract it, thereby achieving control of the elevation angle of the main arm 6. When side-load lateral bending occurs during the operation, the position of the slider base 2 can be adjusted by the controller to make lateral bending adjustments. After the operation is completed, the controller first sends a signal to the hydraulic component, and the hydraulic component controls the variable-length telescopic cylinder 4 to fully retract. After that, the controller sends a signal to the actuator to make the actuator control the slider base 2 to move to the end of the sliding track 11, return to the initial state, and wait for the next operation.

[0037] Second embodiment

[0038] Please refer to Figure 3 The second embodiment of the present invention differs from the first embodiment in that, in this embodiment, the sliding track 11 is a circular symmetrical track whose axis of symmetry coincides with the axis of the main arm 6. The two slider bases 2 slide on the tracks on either side of the axis of symmetry. This ensures that, regardless of the orientation of the slider bases 2 as they slide along the circular symmetrical track, their support points are always symmetrically distributed on either side of the axis of the main arm 6. This ensures that the supporting force is evenly transmitted to the main arm 6, concentrating the force of the entire support structure at the mechanical center of the main arm 6 and ensuring that the main arm 6 maintains good balance and stability during operation.

[0039] In this embodiment, the slider base 2 can adjust the support position of the telescopic cylinder 4 along the annular track, so that the telescopic cylinder 4 can provide support force for the main arm 6 in different directions, and can timely adjust the position and angle of the support point according to the direction of the side load, thereby reducing the tilt and lateral bending of the main arm 6 under the lateral load. In contrast, the straight track can only adjust the front and rear position of the support point in a fixed direction, and its ability to resist side loads is relatively weak. With the support of the annular symmetrical track, the support point can be adjusted more accurately according to the needs of the lifting operation, providing a more stable support force distribution. Not only does it improve the stability during operation, but it can also perform torque compensation more quickly when the hoisted object deviates laterally or other unstable factors occur, thereby reducing the sway or tilt of the equipment.

[0040] Third embodiment

[0041] The difference between the third embodiment of the present invention and the above-mentioned first embodiment is that, in this embodiment, the bottom of the main arm 6 is hinged to the slider base 2 through the bottom ball joint support 3, and a top ball joint support 5 is provided on the side of the main arm 6. The top ball joint support 5 is fixed to the main arm 6 by welding and is hinged to the boom cylinder.

[0042] Specifically, the top spherical hinge support 5 is welded and fixed on the main arm 6, so that the support structure is more firm, and the spherical hinge support can effectively prevent loosening or position deviation during operation. The welded connection mode simplifies the installation process of the support, improves the reliability of the connection, and enables the main arm 6 to realize stable force transmission during lifting and contraction.

[0043] Through the welded top spherical hinge support 5, the lateral stability of the main arm 6 is enhanced, and the spherical hinge support can conduct support force, so that the amplitude telescopic oil cylinder 4 can provide more stable support force. In addition, under high load and high frequency operation conditions, the welded spherical hinge support can significantly reduce the risk of support failure caused by fatigue or loose connection, and improve the safety of the crane.

[0044] Fourth embodiment

[0045] Please refer to Figure 6 The fourth embodiment of the utility model provides the difference from the above-mentioned first embodiment lies in that in the embodiment, the main arm 6 is reserved with a plurality of connecting hole positions 61 along the axial direction on both sides. These connecting hole positions 61 are evenly distributed on the side surface of the main arm 6, and the top spherical hinge support 5 can be installed on any reserved connecting hole position 61 through bolts or other connecting pieces, and the installation position can be flexibly adjusted, so as to change the support angle and moment distribution of the amplitude telescopic oil cylinder 4. According to different requirements of hoisting operation, the operator can select the appropriate installation position in the reserved hole position, so as to improve the flexibility of the support system.

[0046] In addition, the detachable design of the top spherical hinge support 5 makes the support structure more flexible, and adapts to various working conditions and operation conditions. Especially when the operation environment changes greatly, the position of the top spherical hinge support 5 can be adjusted according to the actual situation to realize better force distribution and support effect. At the same time, detachable installation is convenient for maintenance and replacement of the top spherical hinge support 5, and improves the maintenance convenience and operation safety of the system.

[0047] It should be noted that each embodiment in the present specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts of each embodiment can be referred to each other.

[0048] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this. Any skilled person in the technical field can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the appended claims.

Claims

1. A support structure, characterized in that: It comprises a guide rail (1), a slider base (2), a telescopic oil cylinder (4) and a main arm (6), wherein the guide rail (1) has a sliding track (11), and the slider base (2) is movably mounted in the sliding track (11); Two telescopic oil cylinders (4) are provided, one end of the telescopic oil cylinder (4) is hinged to the slider base (2), and the other end of the telescopic oil cylinder (4) is hinged to one side of the main arm (6).

2. The support structure according to claim 1, wherein: The sliding track (11) is a symmetrical track, and the symmetry axis of the symmetrical track coincides with the axis of the main arm (6).

3. The support structure according to claim 2, wherein: The sliding track (11) is a ring-shaped symmetrical track.

4. The support structure according to claim 1, wherein: It also includes a bottom ball joint support (3), which is mounted on the slider base (2), and the slider base (2) is hinged to one end of the telescopic oil cylinder (4) via the bottom ball joint support (3).

5. The support structure according to claim 1, wherein: It also includes a top ball joint support (5), which is arranged on the side of the main arm (6), and the main arm (6) is hinged to the telescopic oil cylinder (4) through the top ball joint support (5).

6. The support structure according to claim 5, characterized in that A plurality of connection holes (61) are reserved along the axis on both sides of the main arm (6), and the top ball joint support (5) can be detachably mounted on any connection hole (61).

7. A crane comprising the support structure according to any one of claims 1 to 6, characterized in that: Also included is an onboard control system comprising a controller and a hydraulic assembly in communication with the controller.

8. The crane according to claim 7, wherein: An execution component is also provided at the bottom of the slider base (2), and the execution component is in communication connection with the controller.

9. The crane according to claim 7, wherein: The guide rail (1) is detachably mounted on the turntable of the crane.

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