Novel stone forklift loader main movement mechanism with double complex hinges

Abstract

The invention discloses a novel stone forklift loader main movement mechanism with double complex hinges, which comprises a movable arm, an ejector rod, a connecting rod, a lifting hydraulic cylinder and a rotating bucket hydraulic cylinder, and the two ends of the movable arm are respectively hinged with a rack and a stone fork; two ends of the lifting hydraulic cylinder are respectively hinged with the rack and the movable arm; the cylinder barrel end of the rotating bucket hydraulic cylinder is hinged to the first connecting rod, and the two ends of the ejector rod are hinged to the piston rod end of the rotating bucket hydraulic cylinder and the stone fork respectively. The first connecting rod, the second connecting rod and the rotating bucket hydraulic cylinder are hinged to form a composite hinge. The rotating bucket hydraulic cylinder, the ejector rod and the third connecting rod are hinged to form a composite hinge. The stone fork, the third connecting rod, the ejector rod and the movable arm form a quadrilateral structure, the third connecting rod, the second connecting rod, the movable arm and the rotating bucket hydraulic cylinder form a quadrilateral structure, and the rack, the movable arm, the first connecting rod and the second connecting rod form a quadrilateral structure. The stability and bearing capacity of the whole machine can be improved, the overturning angle of the stone fork is larger, the large forking amount and unloading amount can be provided, the anti-overturning capacity during forking and loading of special-shaped stone can be remarkably improved, and the operation visual field is effectively expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and particularly to a main motion mechanism of a new type of stone forklift with double compound hinges. Background Art

[0002] As a special material handling machine, the stone forklift realizes full-process coverage of high efficiency, safety and low cost in the stone industrial chain through heavy-duty structure design, special tooling fixtures and intelligent control systems. It has irreplaceability especially in the scenarios of large weight and high-precision operations. Its functions are mainly used for handling stones, and may also include loading, unloading, stacking and transportation, etc. The performance of the main motion mechanism of the stone forklift mainly includes load-bearing capacity, motion smoothness and anti-overturning ability, etc., which determines the overall performance of the stone forklift.

[0003] At present, the main motion mechanisms of domestic stone forklifts are mainly double-rocker four-bar mechanisms or Z-type reverse six-bar mechanisms. Most of the research and development on the main motion mechanism is to improve the heavy-duty performance, structural reliability, working condition adaptability and safety protection of the whole machine through multi-bar optimization, material innovation and hydraulic intelligence. Existing stone forklift structures, such as the XCMG LW600KV(GIV)-T25 of domestic enterprises, adopt Z-type link mechanisms and double rocker arm designs, which improve the breakout force and stability. However, the current layout structures of new four-bar and six-bar stone forklifts are similar, and traditional forklifts use single hinge structures. Such structures may have large deformations or shakes during loading, and the forklift is more likely to shake or tip over during heavy-duty operations or when driving on uneven ground. Therefore, it is crucial to improve the load-bearing capacity and stability of the stone forklift. Summary of the Invention

[0004] In order to solve the existing technical problems, the present invention provides a main motion mechanism of a new type of stone forklift with double compound hinges, which can effectively improve the load-bearing capacity and stability of the working device and is suitable for handling special-shaped stones.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The main motion mechanism of the new type of stone forklift with double compound hinges includes a frame, a boom, a first connecting rod, a second connecting rod, a third connecting rod, a stone fork, a push rod, a tilt cylinder and a lift cylinder; both ends of the boom are respectively hinged to the frame and the stone fork; both ends of the lift cylinder are respectively hinged to the frame and the boom; both ends of the tilt cylinder are respectively hinged to the first connecting rod and the push rod; both ends of the push rod are respectively hinged to the piston rod end of the tilt cylinder and the stone fork; the lower end of the third connecting rod is hinged to the boom; the lower end of the second connecting rod is hinged to the boom.

[0007] Furthermore, the first connecting rod, the second connecting rod and the barrel end of the bucket hydraulic cylinder are hinged to form a multiple hinge.

[0008] Furthermore, the piston rod end of the bucket hydraulic cylinder, the push rod and the third connecting rod are hinged to form a multiple hinge.

[0009] Furthermore, the stone fork, the third connecting rod, the top rod and the movable arm form a quadrilateral structure; the third connecting rod, the second connecting rod, the movable arm and the bucket hydraulic cylinder form a quadrilateral structure; the frame, the movable arm, the first connecting rod and the second connecting rod form a quadrilateral structure.

[0010] Furthermore, the lifting hydraulic cylinder is arranged below the boom.

[0011] The beneficial effects of the present invention are:

[0012] 1. The main motion mechanism adopts a double-compound hinge design. The compound hinge is formed by hinged multiple components, which can disperse the contact pressure between the fork and the stone, reduce wear and tear, and improve the carrying capacity. Compared with the traditional single-hinged structure, the double-compound hinge has a better force transmission effect, can improve the stability of the whole machine, ensure that the stone will not slip during the handling process, and is conducive to the handling of special-shaped stones.

[0013] 2. The main motion mechanism adopts a bottom-mounted lifting hydraulic cylinder layout, and the hydraulic cylinder is installed at the bottom of the frame, which lowers the center of gravity of the whole machine and significantly improves the anti-overturning ability of the forklift when forking special-shaped stones.

[0014] 3. The lifting mechanism of the main motion mechanism adopts a quadrilateral structure, and the fork has a larger turning angle when picking up and unloading, which can meet the loading and unloading needs of spherical, blocky and other special-shaped stones. In these two working conditions, the quadrilateral structure can achieve large component folding, greatly expanding the operating field of the stone fork loader under these two working conditions. The quadrilateral structure can also ensure that the fork always maintains a horizontal posture during the lifting process, avoiding the center of gravity shift caused by the tilt of special-shaped stones, and is especially suitable for large stones with uneven center of gravity distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main motion mechanism of a new type of stone forklift with double compound hinges of the present invention;

[0016] Figure 2 It is a three-dimensional schematic diagram of the main motion mechanism of a new type of stone fork loader with double compound hinges of the present invention (stone fork picking state);

[0017] Figure 3 It is a three-dimensional schematic diagram of the main motion mechanism of a new type of stone fork loader with double compound hinges of the present invention (the turning hydraulic cylinder is working, and the stone fork is in the pitch adjustment state);

[0018] Figure 4It is a three-dimensional schematic diagram of the main movement mechanism of a new type of stone fork loader with double compound hinges in the present invention (stone fork lifting state);

[0019] Figure 5 It is a three-dimensional schematic diagram of the main movement mechanism of a new type of stone fork loader with double compound hinges in the present invention (when the tipping hydraulic cylinder works and the stone fork discharges materials);

[0020] Figure 6 It is a top view schematic diagram of the main movement mechanism of a new type of stone fork loader with double compound hinges in the present invention (when the tipping hydraulic cylinder works and the stone fork discharges materials).

[0021] Among them, 1 - frame, 2 - lifting hydraulic cylinder, 3 - boom, 4 - first connecting rod, 5 - second connecting rod, 6 - bucket tipping hydraulic cylinder, 7 - third connecting rod, 8 - ejector rod, 9 - stone fork. Specific implementation mode

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0023] As Figure 1-6 For the implementation mode of the new type of stone fork loader with double compound hinges, it includes a frame 1, a lifting hydraulic cylinder 2, a boom 3, a first connecting rod 4, a second connecting rod 5, a bucket tipping hydraulic cylinder 6, a third connecting rod 7, an ejector rod 8 and a stone fork 9. The cylinder end of the bucket tipping hydraulic cylinder 6 is hinged to the first connecting rod 4, and both ends of the ejector rod 8 are respectively hinged to the piston rod end of the bucket tipping hydraulic cylinder 6 and the stone fork 9; the first connecting rod, the second connecting rod and the bucket tipping hydraulic cylinder are hinged to form a compound hinge, and the bucket tipping hydraulic cylinder, the ejector rod and the third connecting rod are hinged to form a compound hinge; the stone fork, the third connecting rod, the ejector rod and the boom form a quadrilateral structure, the third connecting rod, the second connecting rod, the boom and the bucket tipping hydraulic cylinder form a quadrilateral structure, and the frame, the boom, the first connecting rod and the second connecting rod form a quadrilateral structure.

[0024] In the main movement mechanism of the new type of stone fork loader with double compound hinges, the work of the fork loader starts from horizontally fork-lifting the stone fork placed on the ground. In the fork-lifting working condition, the lifting hydraulic cylinder 2 is locked, the bucket tipping hydraulic cylinder 6 shortens, and the stone fork is flipped by means of the backward pulling of the ejector rod 8; in the lifting working condition, the lifting hydraulic cylinder pushes forward to lift the boom, and at this time the bucket tipping hydraulic cylinder 6 is unloaded; when unloading materials, the lifting hydraulic cylinder 2 is held at the maximum limit and locked, and at this time the bucket tipping hydraulic cylinder 6 pushes the piston rod forward, and the stone fork is flipped by relying on the ejector rod 8 to complete the unloading of materials; after the unloading is completed, the bucket tipping hydraulic cylinder 6 is unloaded, and when the boom descends to the lowest limit, relying on the quadrilateral relationship between the components, the stone fork can be automatically leveled, saving time for the next working cycle.

[0025] In the main motion mechanism, the first connecting rod 4, the second connecting rod 5 and the tipping hydraulic cylinder 6 are hinged to form a compound hinge, and the tipping hydraulic cylinder 6, the ejector rod 8 and the third connecting rod 7 are hinged to form a compound hinge, so that the force transmission effect between the mechanisms is better, and the stability and load-bearing capacity of the whole machine can be improved during the lifting operation, and it is more convenient to operate special-shaped stones. The stone fork 9, the third connecting rod 7, the ejector rod 8 and the boom 3 form a quadrilateral structure, the third connecting rod 7, the second connecting rod 5, the boom 3 and the tipping hydraulic cylinder 6 form a quadrilateral structure, and the frame 1, the boom 3, the first connecting rod 4 and the second connecting rod 5 form a quadrilateral structure. The quadrilateral structure can be compressed during the fork-taking operation and material unloading, and the turning angle of the stone fork is larger, which can provide a larger fork-taking amount and unloading amount. The lifting hydraulic cylinder of the stone fork loader adopts a lower layout form, with better operation stability. Combined with the quadrilateral mechanism, compression can be achieved, greatly expanding the operation vision of the whole machine and making the operation of the stone fork loader more convenient.

[0026] The solutions in the embodiments are not intended to limit the patent protection scope of the present invention. Any equivalent implementation or change without departing from the present invention is included in the patent scope of this case.

Claims

1. A main motion mechanism of a new type of stone forklift with double compound hinges, characterized in that: It includes a frame, a boom, a first connecting rod, a second connecting rod, a third connecting rod, a stone fork, a push rod, a tilt cylinder and a lift cylinder; both ends of the boom are hinged to the frame and the stone fork respectively; both ends of the lift cylinder are hinged to the frame and the boom respectively; both ends of the tilt cylinder are hinged to the first connecting rod and the push rod respectively; both ends of the push rod are hinged to the piston rod end of the tilt cylinder and the stone fork respectively; the lower end of the third connecting rod is hinged to the boom; the lower end of the second connecting rod is hinged to the boom.

2. The main motion mechanism of a new type of stone forklift with double compound hinges according to claim 1, characterized in that: The first connecting rod, the second connecting rod and the tilt cylinder are hinged to form a compound hinge, and the tilt cylinder, the push rod and the third connecting rod are hinged to form a compound hinge.

3. The main motion mechanism of a new type of stone forklift with double compound hinges according to claim 1, characterized in that: The stone fork, the third connecting rod, the push rod and the boom form a quadrilateral structure; the third connecting rod, the second connecting rod, the boom and the tilt cylinder form a quadrilateral structure; the frame, the boom, the first connecting rod and the second connecting rod form a quadrilateral structure.

4. The main movement mechanism of a new type of stone fork loader with double compound hinges according to claim 1, characterized in that: The tilt cylinder is not directly connected to the boom.

5. A main motion mechanism of a new type of stone forklift with double compound hinges according to claim 1, characterized in that: The lift cylinder is arranged below the boom.

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