Cutter head structure with variable aperture ratio

Abstract

The utility model relates to the technical field of shield tunneling machines, in particular to a cutterhead structure with a variable aperture ratio. Comprising a strip-shaped grid, cutter disc spokes, a plurality of cutter disc panels, a plurality of closing plates and a plurality of oil cylinders, the cutter disc panels are connected with the strip-shaped grid and located on the outer side of the strip-shaped grid, the cutter disc spokes are fixedly connected with the strip-shaped grid and located on the outer side of the strip-shaped grid, each closing plate is movably connected with the strip-shaped grid, and the oil cylinders are connected with the cutter disc spokes. According to the structure, the cutter head can adapt to different geological conditions and construction requirements, and the construction efficiency and quality are improved. The cutter head is provided with the two oil cylinders which are located below the corresponding cutter head panels, and each oil cylinder is arranged in the corresponding strip-shaped grating and connected with the corresponding closing plate.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a cutter head structure with variable opening ratio. Background Technique

[0002] Shield machines are increasingly widely used in various tunnel projects. The tunneling efficiency and safety of shield machines are directly affected by the performance of the cutter head, and the opening ratio of the cutter head is a key factor affecting the efficiency of muck entering the soil bin and the supporting effect on the heading face.

[0003] However, the traditional cutter head cannot adapt to different geological conditions and construction requirements, resulting in low construction efficiency and quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cutter head structure with variable opening ratio, aiming to solve the technical problem that the traditional cutter head cannot adapt to different geological conditions and construction requirements, resulting in low construction efficiency and quality.

[0005] To achieve the above purpose, a cutter head structure with variable opening ratio adopted by the utility model includes strip-shaped gratings, cutter head spokes, a plurality of cutter head panels, a plurality of blanking plates and a plurality of oil cylinders. The plurality of cutter head panels are all connected to the strip-shaped gratings and are all located outside the strip-shaped gratings. The cutter head spokes are fixedly connected to the strip-shaped gratings and are located outside the strip-shaped gratings. Each blanking plate is movably connected to the strip-shaped grating and is respectively located below the corresponding cutter head panel. Each oil cylinder is arranged in the strip-shaped grating and is respectively connected to the corresponding blanking plate.

[0006] Wherein, the strip-shaped grating has a plurality of sliding grooves, and each blanking plate is movably connected to the strip-shaped grating and is respectively located in the corresponding sliding groove.

[0007] Wherein, the strip-shaped grating has a plurality of sliding grooves, and each blanking plate is movably connected to the strip-shaped grating and is respectively located in the corresponding sliding groove.

[0008] Wherein, every two adjacent blanking plates are arranged in a staggered manner in the up-down direction on the strip-shaped grating.

[0009] Wherein, the shape of the cutter head spokes is cross-shaped, and the plurality of cutter head panels are respectively located within the right angles of the cutter head spokes.

[0010] A variable opening ratio cutter head structure of the present utility model, wherein the strip-shaped grille connects the cutter head spokes and the cutter head panel. One end of the blanking plate is stuck in the strip-shaped grilles on both sides, and the other end of the blanking plate is placed in the cutter head panel. Both sides of the other end of the blanking plate are connected to the oil cylinders. The oil cylinders are built inside the strip-shaped grilles in the retracting direction of the blanking plate. During the construction of the shield machine, when the soil layer changes and it is necessary to increase or decrease the opening ratio of the cutter head, the position of the blanking plate can be moved by controlling the telescopic movement of the oil cylinders; all the oil cylinders can act synchronously. Each group of oil cylinders is equipped with an in-built stroke sensor connected to the industrial control computer, and the industrial control computer converts the stroke change into the change of the opening ratio for display; thus, precise control of the change of the opening ratio of the cutter head is achieved. Among them, during the construction of the shield machine, through a precise hydraulic component control system, the combination mode of the blanking plate and the strip-shaped grille structure is flexibly adjusted, so as to accurately adjust the opening ratio of the cutter head. In the face of scenarios such as pebble strata, in order to effectively prevent large-sized pebbles from invading the soil bin, the blanking plate can be extended in due time to reduce the opening ratio; while in soft soil strata and other strata where it is necessary to ensure the smooth flow of muck, the opening ratio can be increased by moderately retracting the blanking plate to ensure the construction efficiency and quality. Through the above method, the cutter head can adapt to different geological conditions and construction requirements, improving the construction efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0012] Figure 1 is a schematic structural diagram of the variable opening ratio cutter head structure of the present utility model.

[0013] Figure 2 is of the present utility model Figure 1 A-A line structural sectional view.

[0014] Figure 3 is of the present utility model Figure 1 B-B line structural sectional view.

[0015] Figure 4 is of the present utility model Figure 1 C-C line structural sectional view.

[0016] Figure 5 is a diagram of the change of the opening ratio of the variable opening ratio cutter head structure of the present utility model.

[0017] 1 - Cutter head spoke, 2 - Cutter head panel, 3 - Blind plate, 4 - Strip-shaped grille, 5 - Oil cylinder, 6 - Slide groove. Specific implementation mode

[0018] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0019] Please refer to Figures 1 to 5 , the present invention provides a cutter head structure with variable opening ratio, including a strip-shaped grille 4, cutter head spokes 1, a plurality of cutter head panels 2, a plurality of blind plates 3 and a plurality of oil cylinders 5. The plurality of cutter head panels 2 are all connected to the strip-shaped grille 4 and are all located outside the strip-shaped grille 4. The cutter head spokes 1 are fixedly connected to the strip-shaped grille 4 and are located outside the strip-shaped grille 4. Each blind plate 3 is movably connected to the strip-shaped grille 4 and is respectively located below the corresponding cutter head panel 2. Each oil cylinder 5 is arranged in the strip-shaped grille 4 and is respectively connected to the corresponding blind plate 3.

[0020] In this embodiment, the strip-shaped grille 4 connects the cutter head spokes 1 and the cutter head panels 2. One end of the blind plate 3 is stuck in the strip-shaped grille 4 on both sides, and the other end of the blind plate 3 is placed in the cutter head panel 2. Both sides of the other end of the blind plate 3 are connected to the oil cylinder 5. The oil cylinder 5 is built in the strip-shaped grille 4 in the retracting direction of the blind plate 3. During the construction of the shield machine, when the soil layer changes and it is necessary to increase or decrease the opening ratio of the cutter head, the position of the blind plate 3 can be moved by controlling the telescopic movement of the oil cylinder 5; all the oil cylinders 5 can act synchronously. Each group of oil cylinders 5 has an internal stroke sensor connected to the industrial control computer, and the industrial control computer converts the stroke change into the display of the opening ratio change; thus, precise control of the change of the cutter head opening ratio is realized. Among them, during the construction of the shield machine, through a precise hydraulic component control system, the combination mode of the blind plate 3 and the strip-shaped grille 4 is flexibly adjusted, so as to accurately adjust the opening ratio of the cutter head. In the face of scenarios such as pebble strata, in order to effectively prevent large-sized pebbles from invading the soil bin, the blind plate 3 can be extended in due time to reduce the opening ratio; while in soft soil strata and other strata where it is necessary to ensure the smooth flow of muck, the opening ratio can be increased by moderately retracting the blind plate 3 to ensure the construction efficiency and quality. Through the above method, the cutter head can adapt to different geological conditions and construction requirements, and the construction efficiency and quality are improved.

[0021] Furthermore, the strip-shaped grille 4 has a plurality of slide grooves 6, and each blind plate 3 is movably connected to the strip-shaped grille 4 and is respectively located in the corresponding slide groove 6.

[0022] In this embodiment, by providing the chute 6 on the strip-shaped grille 4, the shutter 3 moves within the chute 6, and the chute 6 defines the trajectory of the shutter 3 during movement, thereby increasing the stability of the shutter 3.

[0023] Furthermore, every two adjacent shutters 3 are arranged in a staggered up-and-down orientation on the strip-shaped grille 4.

[0024] In this embodiment, the shutters 3 are arranged in a staggered up-and-down manner, which can form a more complex crushing path, enabling the material to be subjected to shearing, extrusion, and impact forces in more directions within the strip-shaped grille 4, thereby improving the crushing efficiency.

[0025] Furthermore, the shape of the cutter head spoke 1 is cross-shaped, and a plurality of cutter head panels 2 are respectively located within the right angles of the cutter head spoke 1.

[0026] In this embodiment, the cutter head spoke 1 is cross-shaped, and the cross-plate structure has a certain shear strength, which can enhance the overall structural strength of the strip-shaped grille 4.

[0027] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A variable opening ratio cutter disc structure, characterized in that: It includes a strip grille, a blade disc spoke, a plurality of blade disc panels, a plurality of blocking plates and a plurality of oil cylinders. The plurality of blade disc panels are connected to the strip grille and are located on the outside of the strip grille. The blade disc spokes are fixedly connected to the strip grille and are located on the outside of the strip grille. Each of the blocking plates is movably connected to the strip grille and are respectively located below the corresponding blade disc panel. Each of the oil cylinders is arranged in the strip grille and is respectively connected to the corresponding blocking plate.

2. The variable aperture ratio cutter head structure according to claim 1, characterized in that: The strip grille has a plurality of slide grooves, and each of the blocking plates is movably connected to the strip grille and is located in the corresponding slide groove respectively.

3. The variable aperture ratio cutter head structure according to claim 1, characterized in that: Every two adjacent blocking plates are arranged on the strip grid in an up-and-down staggered manner.

4. The variable aperture ratio cutter head structure according to claim 1, characterized in that: The spokes of the blade disc are in a cross shape, and the plurality of blade disc panels are respectively located within the right angles of the blade disc spokes.

Images