A large-scale material pouring machine

Abstract

The utility model discloses a large -scale material pouring machine, aims at solving the technical problem of the existing equipment lifting oil cylinder easy bending deformation leads to the material pouring not level. The material pouring machine includes two groups of symmetrical setting lifting mechanism and the turnover frame connected therebetween, the lifting mechanism includes the door type fixed frame fixed on the bottom plate, the lifting oil cylinder below the middle part of door type fixed frame and the two guide columns separately arranged in the both sides of lifting oil cylinder, and the guide column both ends are fixed with bottom plate and the upper crossbeam of door type fixed frame. The lifting frame middle part is connected with the piston rod of lifting oil cylinder, and its both sides are slidably connected with guide sleeve and guide column. The utility model discloses the rigid frame by door type fixed frame and guide column and bear lateral force, make lifting oil cylinder only provide vertical power, thereby significantly improved the stability of lifting process and equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of material handling and processing equipment technology, specifically to a large material dumping machine for lifting and tilting heavy material buckets. Background Technology

[0002] In industrial production such as chemical, metallurgical, and pharmaceutical manufacturing, it is often necessary to handle material drums containing large quantities of materials. To transfer the material from these drums, large unloading machines are typically used. These machines can lift the drums to a certain height and tip them over, thus completing the unloading operation.

[0003] In existing technologies, common large-scale unloading machines typically include two sets of symmetrically arranged lifting mechanisms. For example... Figure 1 As shown, each lifting mechanism includes two lifting cylinders arranged in parallel, and a lifting frame directly connected to the piston rod ends of the two lifting cylinders. A tilting frame for fixing the material bucket is connected between the two lifting frames, and a tilting drive device for driving the tilting frame to rotate is provided on one of the lifting frames.

[0004] However, the above structure has obvious drawbacks. In actual production, especially when the total weight of the hopper and its contents is very large, the load of the entire system is mainly borne directly by the four lifting cylinders (two in each group). Since the lifting cylinders themselves are telescopic structures, their bending stiffness is limited. Under huge loads, the piston rods of the cylinders on both sides are prone to bending and deforming inward due to lateral forces. This deformation causes unstable displacement and swaying of the tilting frame connected between the two lifting frames, causing the hopper to shake during lifting and tilting. This not only affects the tilting accuracy and poses safety hazards, but also accelerates the wear of the cylinder seals, reducing the service life of the equipment. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a large unloading machine with a more stable and reliable structure that can effectively prevent deformation of the mechanism during the lifting process.

[0006] The technical solution adopted by this utility model is as follows: A large material unloading machine includes two sets of symmetrically arranged lifting mechanisms, and a tilting frame connected between the two lifting mechanisms for fixing the material bucket; the lifting mechanism includes:

[0007] A portal frame is fixed to the base plate;

[0008] A lifting cylinder is vertically fixed to the base plate and located below the center of the gantry-shaped fixing frame;

[0009] Two guide columns are respectively vertically arranged on both sides of the lifting cylinder. The lower end of the guide column is fixedly connected to the base plate, and the upper end is fixedly connected to the upper crossbeam of the gantry frame.

[0010] A lifting frame, the middle part of which is fixedly connected to the piston rod end of the lifting cylinder, and guide sleeves are respectively provided on both sides of the lifting frame, the guide sleeves and the corresponding guide posts forming a sliding fit; one of the lifting frames is provided with a tilting drive device for driving the tilting frame to rotate.

[0011] Furthermore, the guide post includes an upper cylindrical section and a lower square column section, and a reinforcing rib is connected between the square column section and the base plate.

[0012] Furthermore, the piston rod end of the lifting cylinder is bolted to the lifting frame via a flange.

[0013] Furthermore, the guide sleeve is a linear bearing or a copper-based graphite bushing.

[0014] Furthermore, the tilting drive device includes a motor and a reducer, which drives the tilting frame to rotate through a transmission mechanism.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) This utility model establishes a rigid guiding system consisting of four guide columns for the entire lifting mechanism by setting a portal frame and a sliding fit structure of guide columns and guide sleeves arranged on both sides of the lifting cylinder. When lifting the heavy-duty bucket, the lateral unstable force and torque are borne by the guide columns with high bending strength and transmitted to the base plate through the portal frame, thereby ensuring that the lifting frame and even the entire tilting frame only make strict vertical movements, effectively preventing shaking and tilting, and making the unloading process smooth and safe;

[0017] (2) In this utility model, the lifting cylinder mainly undertakes the responsibility of providing vertical lifting power, thus avoiding the lateral bending stress. This solves the problem that the piston rod of the cylinder is easily damaged due to bending under pressure in the prior art, significantly reduces the wear rate of the cylinder seals, reduces the maintenance frequency, and extends the service life of the core hydraulic components.

[0018] (3) The portal frame, guide column and base plate together form a high rigidity support structure. In particular, when the guide column adopts the preferred scheme of upper cylindrical section and lower square column section combined with reinforcing rib plate, its connection rigidity and bending resistance with the base plate are further enhanced, which can resist the huge internal force generated by heavy load and ensure that the equipment does not deform during long-term operation. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a large-scale unloading machine in the existing technology.

[0020] Figure 2 This is a structural schematic diagram of the large-scale unloading machine provided by this utility model. Detailed Implementation

[0021] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0022] like Figure 2 As shown in the figure, this embodiment provides a large material pouring machine, which mainly includes two sets of lifting mechanisms 1 symmetrically arranged on the left and right sides, and a tilting frame 2 fixedly connected between the two lifting mechanisms 1. The tilting frame 2 is used to support and fix the material bucket 3 to be poured.

[0023] Each of the lifting mechanisms 1 includes a gantry-shaped fixing frame 11, a lifting cylinder 12, two guide columns 13, a lifting frame 15, and two guide sleeves 14 disposed on the lifting frame 15. The gantry-shaped fixing frame 11 is fixed to a common base plate, providing support for the entire mechanism. The lifting cylinder 12 is vertically fixed to the base plate, and its position is directly below the center of the gantry-shaped fixing frame 11.

[0024] Two guide posts 13 are respectively vertically installed on both sides of the lifting cylinder 12, forming a rigid parallel guiding and lifting system together with the lifting cylinder 12. The lower end of each guide post 13 is fixedly connected to the base plate, and the upper end is fixedly connected to the upper crossbeam of the gantry frame 11, thus forming a highly rigid frame structure together with the gantry frame 11 and the base plate.

[0025] The middle part of the lifting frame 15 is fixedly connected to the end of the piston rod of the lifting cylinder 12. Guide sleeves 14 are installed at both ends of the lifting frame 15. Each guide sleeve 14 forms a precise sliding fit with its corresponding guide post 13. In a preferred embodiment, the guide sleeves 14 can be made of linear bearings with a low coefficient of friction or copper-based graphite bushings with good wear resistance to ensure that the lifting frame 15 can slide smoothly and stably up and down along the guide post 13.

[0026] Continue reading Figure 2 A tilting drive device 16 is also installed on one of the lifting frames 15. In this embodiment, the tilting drive device 16 includes a motor (which may be a conventional motor or a hydraulic motor) and a reducer connected thereto. It drives the tilting frame 2 and the material bucket 3 on it to rotate through a transmission mechanism (e.g., gear transmission) to complete the material unloading action.

[0027] To further enhance the rigidity and deformation resistance of the structure, as a preferred embodiment, the guide post 13 can adopt a segmented design: its upper part is a cylindrical segment for forming a precise sliding guide with the guide sleeve 14; its lower part is a square column segment, which provides a larger connection area and bending section modulus. A reinforcing rib is also welded or bolted between the square column segment and the base plate, which greatly enhances the connection stiffness at the base of the guide post 13 and effectively resists lateral bending moments caused by heavy loads.

[0028] Furthermore, to ensure reliable connection and ease of maintenance, as a preferred connection method, the piston rod end of the lifting cylinder 12 is bolted to the middle of the lifting frame 15 via a flange. This connection method not only ensures reliable force transmission but also facilitates disassembly and installation during maintenance.

[0029] Working principle:

[0030] During operation, the piston rod of the lifting cylinder 12 extends, pushing the lifting frame 15 to slide smoothly upward along the two guide columns 13, thereby lifting the entire tilting frame 2 and the material bucket 3 to the predetermined height. During this process, since the lateral force is entirely borne by the rigid guide columns 13-guide sleeves 14, the lifting cylinder 12 only bears axial pressure, preventing bending deformation. After reaching the designated height, the tilting drive device 16 is activated, driving the tilting frame 2 and the material bucket 3 to tilt, completing the unloading operation.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A large material unloading machine, comprising two sets of symmetrically arranged lifting mechanisms (1), and a tilting frame (2) connected between the two lifting mechanisms (1) for fixing a material bucket (3), characterized in that, The lifting mechanism (1) includes: A portal frame (11) is fixed to the base plate; A lifting cylinder (12) is vertically fixed to the base plate and located below the center of the gantry frame (11); Two guide columns (13) are respectively vertically arranged on both sides of the lifting cylinder (12). The lower end of the guide column (13) is fixedly connected to the base plate, and the upper end is fixedly connected to the upper crossbeam of the gantry frame (11). A lifting frame (15) is fixedly connected to the piston rod end of the lifting cylinder (12) in its middle part. Guide sleeves (14) are provided on both sides of the lifting frame (15). The guide sleeves (14) and the corresponding guide posts (13) form a sliding fit. A flipping drive device (16) for driving the flipping frame (2) to rotate is provided on one of the lifting frames (15).

2. A large unloading machine as described in claim 1, characterized in that, The guide post (13) includes an upper cylindrical section and a lower square column section, and a reinforcing rib is connected between the square column section and the base plate.

3. A large unloading machine as described in claim 1, characterized in that, The piston rod end of the lifting cylinder (12) is bolted to the lifting frame (15) via a flange.

4. A large unloading machine as described in claim 1, characterized in that, The guide sleeve (14) is a linear bearing or a copper-based graphite bushing.

5. A large unloading machine as described in claim 1, characterized in that, The flipping drive device (16) includes a motor and a reducer, which drives the flipping frame (2) to rotate through a transmission mechanism.

Images