A hoisting tool for excavator

Abstract

The utility model discloses a kind of excavator hoisting tool, belong to port equipment field.Its technical scheme is, a kind of excavator hoisting tool, including hanger main body, two front lifting points and two rear lifting points are equipped on the hanger main body, two front lifting points and two rear lifting points are distributed in rectangle;The front lifting point includes front lifting point plate, hinged hole is opened on the front lifting point plate;The rear lifting point includes rear lifting point plate, and the rear lifting point plate is equipped with sling.This scheme is aimed at the shape characteristics of excavator, and a kind of special hoisting tool is designed, and the front lifting point of tool is directly hinged form, and the rigid connection with the big arm of excavator, and the torsional effect is formed by two hinged, and the rear lifting point is connected with the excavator body by sling, and is lifted, and the weight of excavator is carried, and the hanger main body, excavator and sling form triangle structure, and the stability of excavator in midair posture is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of port equipment, and in particular to a hoisting tool for excavators. Background Technology

[0002] Excavators are important auxiliary equipment in port transportation, especially for bulk materials such as coal, ore, and grain. They can quickly transfer goods to trucks, containers, or transport ships through efficient shoveling operations, or efficiently complete the stacking of bulk materials in the yard and ship hold. Their flexibility is particularly prominent in areas that are difficult for large equipment to cover, such as corners of the yard and narrow spaces.

[0003] When excavators operate on cargo ships, they need to be transferred between land and the ship. This transfer is usually accomplished using lifting equipment such as gantry cranes and tower cranes in the port. Currently, the lifting of excavators is typically achieved by fixing multiple chains to the excavator, with the upper ends of the chains hooked onto the hooks of the lifting equipment.

[0004] However, due to the complex shape of the excavator and the use of multiple chains for hoisting, the chains are prone to twisting when the excavator is swaying in the air, causing the excavator to tilt and making it impossible to place it directly on the deck or ground. Furthermore, it is difficult to reset the excavator after it becomes unbalanced, and the state changes rapidly during the reset process, which can easily cause collision injuries to nearby personnel. Summary of the Invention

[0005] This utility model addresses the problem of unstable chain hoisting in excavators by providing a hoisting tool for excavators.

[0006] To address the aforementioned problems, the present invention provides a lifting fixture for excavators, comprising a main body with two front lifting points and two rear lifting points arranged in a rectangular pattern. Each front lifting point includes a front lifting point plate with hinge holes, and each rear lifting point includes a rear lifting point plate with slings. This solution, tailored to the shape characteristics of excavators, designs a specialized lifting fixture. The front lifting points are directly hinged and rigidly connected to the excavator's boom, providing anti-torsional protection through the two hinges. Simultaneously, the rear lifting points are connected to the excavator body via slings for lifting and bearing the excavator's weight. The lifting fixture, excavator, and slings form a triangular structure, significantly improving the excavator's stability in mid-air.

[0007] As a preferred implementation of excavator lifting fixtures, the bottom of the main body of the lifting frame is also equipped with a guide cap, which is an inverted funnel shape; it also includes a connecting plate for connecting to the excavator, and the connecting plate is equipped with a guide rod. The guide rod is set on the excavator, and the inverted funnel-shaped guide cap can provide precise guidance for the guide rod, which facilitates the rapid alignment of the front and rear lifting points with the lifting structure on the excavator during the lifting process, reduces docking and adjustment time, and further improves the efficiency of lifting operations.

[0008] As a preferred implementation of excavator lifting fixtures, the guide cap has an elongated oval horizontal cross-section. The top surface of the guide cap's inner cavity has two positioning grooves, located at opposite ends of the elongated oval. The connecting plate has two guide rods, the spacing between which matches the spacing between the two positioning grooves. This design is suitable for four-point lifting. The two-point guidance further ensures that the rectangle formed by the front and rear lifting points is aligned with the excavator's lifting structure, further improving the overall lifting efficiency and stability.

[0009] As a preferred implementation of excavator lifting fixtures, the length direction of the guide cap is parallel to the line connecting the two front lifting points. This ensures that the guiding positioning direction is consistent with the torsional direction of the front lifting points, guaranteeing that the positioning force and torsional force are coordinated. This avoids fixture deformation or tilting due to deviations in the force direction during lifting, further ensuring the stability of the excavator's aerial posture.

[0010] As a preferred embodiment of excavator lifting fixtures, the main body of the lifting frame includes a longitudinal beam with two horizontal beams. Both the longitudinal and horizontal beams are horizontally positioned, with the longitudinal beam vertically connected to the midpoint of the horizontal beams. Two front lifting points are located at both ends of one horizontal beam, and two rear lifting points are located at both ends of the other horizontal beam. A guide cap is installed on the bottom surface of the longitudinal beam, positioned between the two horizontal beams. This structure, with the longitudinal and horizontal beams vertically connected and the front and rear lifting points located at both ends of the horizontal beams, ensures that the lifting force is evenly distributed across the entire lifting frame, avoiding damage caused by localized stress concentration. Furthermore, the centered installation of the guide cap further guarantees the accuracy and stability of the docking positioning.

[0011] As a preferred implementation of excavator lifting fixtures, the distance between the two front lifting points is smaller than the distance between the two rear lifting points. This adapts to the stress characteristics of the excavator boom and body, making the torsional resistance of the front lifting points more concentrated and the lifting force of the rear lifting points more balanced. This further optimizes the lifting stress structure, reduces excavator swaying in mid-air, and improves the safety and stability of the lifting process.

[0012] As a preferred implementation of excavator lifting fixtures, the guide rod includes a gas spring, the lower end of which is fixedly connected to the connecting plate, and the upper end of which is provided with a guide ball head. The gas spring extends the guiding distance, allowing the guide cap and guide rod to engage in guiding action earlier. Simultaneously, the gas spring provides cushioning and shock absorption, absorbing the impact force during lifting and docking, preventing component damage caused by hard contact. The guide ball head reduces the frictional resistance between the guide rod and the positioning groove, making the docking process smoother, while also reducing component wear and extending the service life of the fixture.

[0013] As a preferred implementation of excavator lifting fixtures, the top surface of the main body of the lifting frame is provided with four upper lifting lugs arranged in a rectangular pattern. These upper lifting lugs are used to connect to the lifting equipment. The four rectangular upper lifting lugs ensure that the pulling force of the lifting equipment is evenly transmitted to the main body of the lifting frame, avoiding fixture tilting caused by a single lifting point or asymmetrical lifting point, ensuring that the main body of the lifting frame always remains horizontal, and further improving the stability and safety of the excavator lifting process.

[0014] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: This solution uses two rectangularly distributed front lifting points and two rear lifting points. The front lifting points are rigidly hinged to the excavator boom, and the rear lifting points lift the excavator body through slings, forming a triangular stable force system. This significantly improves the excavator's aerial posture stability and solves the problem of easy twisting and tilting in traditional chain lifting. The inverted funnel-shaped guide cap, in conjunction with the guide rod, enables rapid and accurate alignment between the main body of the lifting frame and the excavator connecting plate, reducing adjustment time and improving work efficiency. Furthermore, the oblong cross-section of the guide cap, the positioning grooves at both ends, and the matching design of the double guide rods further ensure the accurate positioning of the lifting structure, and the two-point guidance enhances overall stability. The length direction of the guide cap is parallel to the line connecting the front lifting points, ensuring accurate positioning force. In conjunction with anti-torsional force, it avoids tool deformation or tilting; the structure of the longitudinal beam and transverse beam of the lifting frame being vertically connected, with the front and rear lifting points located at both ends of the transverse beam, achieves uniform distribution of lifting force, prevents damage from localized stress concentration, and the centered installation of the guide cap ensures accurate docking positioning; the design of the front lifting point spacing being smaller than the rear lifting point spacing adapts to the force characteristics of the excavator boom and body, optimizes the force structure, and reduces swaying in the air; the gas spring of the guide rod can extend the guiding distance and buffer and dampen shocks, avoiding hard contact that could damage components, and the guide ball head reduces frictional resistance, making docking smooth, reducing wear and extending tool life; the four rectangularly arranged upper lifting lugs can evenly transmit lifting force, prevent tool tilting, ensure the main body of the lifting frame is horizontal, and comprehensively improve the stability and safety of the excavator lifting process. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this patent, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this patent. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a side view of a specific embodiment of the present utility model.

[0017] Figure 2 This is a rear view schematic diagram of a specific embodiment of the present utility model.

[0018] Figure 3 This is a top view schematic diagram of a specific embodiment of the present utility model.

[0019] Figure 4 This is a schematic diagram of the guide cap in a specific embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the connecting plate and guide rod in a specific embodiment of this utility model.

[0021] Explanation of main figure symbols 1. Hanger body, 11. Hanger longitudinal beam, 12. Hanger crossbeam, 2. Front lifting point, 21. Front lifting point plate, 22. Hinge hole, 3. Rear lifting point, 31. Rear lifting point plate, 32. Lifting sling, 4. Guide cap, 41. Positioning groove, 5. Connecting plate, 6. Guide rod, 61. Gas spring, 62. Guide ball head, 7. Upper lifting lug. Detailed Implementation

[0022] To make the objectives, features, and advantages of this patent more apparent and understandable, the technical solutions of this patent will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this patent, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0023] like Figure 1-4 As shown, an excavator lifting fixture includes a lifting frame body 1 and guide components: like Figure 3As shown, the main body 1 of the hanger includes a hanger longitudinal beam 11, on which at least two hanger crossbeams 12 are provided. In this embodiment, three crossbeams are provided. Both the hanger longitudinal beam 11 and the hanger crossbeams 12 are horizontally arranged, and the hanger longitudinal beam 11 is vertically connected to the midpoint of the hanger crossbeam 12. Front suspension points 2 are respectively provided at the bottom of both ends of the front hanger crossbeam 12, and rear suspension points 3 are respectively provided at the bottom of both ends of the rear hanger crossbeam 12. The two front suspension points 2 and the two rear suspension points 3 are arranged in a trapezoidal shape. The distance between the two front suspension points 2 is smaller than the distance between the two rear suspension points 3. In other embodiments, the four front and rear suspension points can also be arranged in a rectangular shape. The front suspension point 2 includes a front suspension point plate 21, on which a hinge hole 22 is provided; the rear suspension point 3 includes a rear suspension point plate 31, on which a sling 32 is provided.

[0024] The bottom surface of the longitudinal beam 11 of the hanger is provided with a guide cap 4, which is located between the two horizontal beams 12 of the hanger. The guide cap 4 is an inverted funnel shape, and the horizontal cross section of the guide cap 4 is an elongated oval. The length direction of the guide cap 4 is parallel to the line connecting the two front lifting points 2. The top surface of the inner cavity of the guide cap 4 is provided with two positioning grooves 41, which are located at the two ends of the elongated oval.

[0025] like Figure 4 As shown, the guide includes a connecting plate 5 for connecting to an excavator. The connecting plate 5 is provided with two guide rods 6. The distance between the two guide rods 6 is adapted to the distance between the two positioning grooves 41. The guide rod 6 includes a gas spring 61. The lower end of the gas spring 61 is fixedly connected to the connecting plate 5. The upper end of the gas spring 61 is provided with a guide ball head 62 that can match the positioning groove 41.

[0026] The top surface of the main body 1 of the gantry is provided with four upper lifting lugs 7, which are arranged in a rectangular shape and are used to connect the lifting equipment.

[0027] The lifting process of this excavator lifting fixture is as follows: First, connect and fix the four upper lifting lugs on the top surface of the main body of the crane to the port gantry crane, tower crane, and other lifting equipment to ensure that the lifting force is evenly transmitted. Then, after the lifting equipment is started, during the descent of the main body of the crane, the inverted funnel-shaped guide cap achieves pre-guided docking through the guide rod composed of gas spring and guide ball head to ensure that the main body of the crane is accurately aligned with the lifting position on the excavator. Finally, rigidly hinge the front lifting point to the excavator boom through the hinge hole of the front lifting point plate, and at the same time connect the sling on the rear lifting point plate to the excavator body. Use the triangular force-bearing structure of the front lifting point resisting torsion and the rear lifting point lifting to fix the excavator for lifting.

[0028] As can be seen from the above embodiments, the advantages of this utility model are as follows: This solution uses two rectangularly distributed front lifting points and two rear lifting points. The front lifting points are rigidly hinged to the excavator boom, and the rear lifting points lift the excavator body via slings, forming a stable triangular force system. This significantly improves the excavator's aerial posture stability and solves the problem of easy twisting and tilting in traditional chain lifting. The inverted funnel-shaped guide cap, in conjunction with the guide rod, enables rapid and accurate alignment between the lifting frame body and the excavator connecting plate, reducing adjustment time and improving work efficiency. Furthermore, the oblong cross-section of the guide cap, the positioning grooves at both ends, and the matching design of the double guide rods further ensure the accurate positioning of the lifting structure, and the two-point guidance enhances overall stability. The length direction of the guide cap is parallel to the line connecting the front lifting points, ensuring that the positioning force is aligned with the... The torsional stress-bearing structure works in tandem to prevent tooling deformation or tilting. The vertical connection between the longitudinal and transverse beams of the lifting frame, with front and rear lifting points located at opposite ends of the transverse beams, ensures even distribution of lifting forces, preventing damage from localized stress concentration. The centered guide cap ensures precise docking positioning. The design, with the front lifting point spacing smaller than the rear lifting point spacing, adapts to the stress characteristics of the excavator's boom and body, optimizing the stress structure and reducing swaying in mid-air. The gas spring on the guide rod extends the guiding distance and provides cushioning and shock absorption, preventing hard contact damage to components. The guide ball joint reduces frictional resistance, ensuring smooth docking and reducing wear to extend tooling life. Four rectangular upper lifting lugs evenly transmit lifting force, preventing tooling tilting, ensuring the main body of the lifting frame is level, and comprehensively improving the stability and safety of the excavator lifting process.

[0029] The above description of the disclosed embodiments enables those skilled in the art to implement or use this patent. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this patent. Therefore, this patent is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hoisting fixture for an excavator, comprising a main body of a hoist (1), characterized in that, The main body (1) of the hanger is provided with two front lifting points (2) and two rear lifting points (3), which are arranged in a rectangular or trapezoidal shape. The front lifting point (2) includes a front lifting point plate (21), and the front lifting point plate (21) is provided with a hinge hole (22). The rear lifting point (3) includes a rear lifting point plate (31), and the rear lifting point plate (31) is provided with a sling (32).

2. The excavator lifting fixture according to claim 1, characterized in that, The bottom of the main body (1) of the hanger is also provided with a guide cap (4), which is an inverted funnel shape; it also includes a connecting plate (5) for connecting the excavator, on which a guide rod (6) is provided.

3. The excavator lifting fixture according to claim 2, characterized in that, The horizontal cross section of the guide cap (4) is an elongated oval. The top surface of the inner cavity of the guide cap (4) is provided with two positioning grooves (41), which are located at the two ends of the elongated oval. The connecting plate (5) is provided with two guide rods (6), and the distance between the two guide rods (6) is adapted to the distance between the two positioning grooves (41).

4. The excavator lifting fixture according to claim 3, characterized in that, The length direction of the guide cap (4) is parallel to the line connecting the two front lifting points (2).

5. The excavator lifting fixture according to claim 2, characterized in that, The main body (1) of the hanger includes a hanger longitudinal beam (11), and at least two hanger crossbeams (12) are provided on the hanger longitudinal beam (11). The hanger longitudinal beam (11) and the hanger crossbeams (12) are both horizontally arranged, and the hanger longitudinal beam (11) is vertically connected to the midpoint of the hanger crossbeam (12). The two front lifting points (2) are respectively located at the two ends of one of the hanger crossbeams (12), and the two rear lifting points (3) are respectively located at the two ends of the other hanger crossbeam (12). The guide cap (4) is installed on the bottom surface of the hanger longitudinal beam (11) and is located between the two hanger crossbeams (12).

6. The excavator lifting fixture according to claim 1, characterized in that, The distance between the two front suspension points (2) is less than the distance between the two rear suspension points (3).

7. The excavator lifting fixture according to claim 2, characterized in that, The guide rod (6) includes a gas spring (61), the lower end of which is fixedly connected to the connecting plate (5), and the upper end of which is provided with a guide ball head (62).

8. The excavator lifting fixture according to claim 1, characterized in that, The top surface of the main body (1) of the hanger is provided with four upper lifting lugs (7), which are arranged in a rectangular shape. The upper lifting lugs (7) are used to connect the lifting equipment.

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