A large diameter mud water knife disc mixing wing for sand and gravel formation

Abstract

The invention provides a large-diameter mud-water cutter disc mixing wing for sand and gravel formations, including a cutter disc body with a box beam structure, the cutter disc body including a plurality of spokes, each spoke including a base and a working part, a box-type mixing wing and a plurality of plate-type mixing wings are arranged on the outer edge of the working part; the box-type mixing wing is arranged on the end of the working part away from the base; each of the plate-type mixing wings is arranged according to an Archimedean spiral on one side of the working surface of the cutter disc body, and a wear-resistant protective layer is provided on the surface of the box-type mixing wing. The invention has a reasonable structural design, and by arranging the box-type mixing wing and the plate-type mixing wing arranged in an Archimedean spiral on the cutter disc body, the cutter disc body is reliably protected, and the stones are effectively vibrated and impacted, thereby improving the efficiency of rock breaking and rock layer mixing, and achieving good working effect.

Description

Technical Field

[0001] The invention belongs to the technical field of shield construction equipment, and in particular relates to a large-diameter mud-water cutter disc stirring wing for sand and gravel formations. Background Art

[0002] With the continuous development of research and development technology of shield machine design, in order to adapt to the large-diameter slurry balance shield machine on the market, the cutter head is easier to replace the tools, and normal pressure tool change is mostly adopted, thus deriving the box beam structure of the slurry cutter head. In complex strata such as sand and gravel strata, the cutter head body also participates in the stirring effect in the slurry bin. Due to the large outer diameter of the cutter head body and the relatively large rotation linear speed, the sand and gravel cut from the excavation surface have a relatively large impact and wear on the cutter head body. In general, the excavation interval distance across the river is relatively long, which has a relatively large impact on the cutter head body. If no protective measures are given in the design, there is a high possibility that the edge of the cutter head box will be damaged, and the consequences will be very serious. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the above-mentioned prior art and proposes a large-diameter mud-water cutter disc stirring wing for sand and gravel formations.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A large-diameter mud-water cutter disc mixing wing for sand and gravel strata comprises a cutter disc body with a box beam structure, the cutter disc body comprises a plurality of spokes, each spoke comprises a base and a working portion, a box-type mixing wing and a plurality of plate-type mixing wings are arranged on the outer edge of the working portion; the box-type mixing wing is arranged on an end of the working portion away from the base; each of the plate-type mixing wings is arranged according to an Archimedean spiral on one side of the working surface of the cutter disc body, and a wear-resistant protective layer is provided on the surface of the box-type mixing wing.

[0006] Furthermore, a notch facing outwards is provided in the middle of the plate-type stirring wing.

[0007] Furthermore, oblique baffles are provided on both sides of the box-type stirring wing, and the oblique baffles are inclined toward one side of the center of the box-type stirring wing.

[0008] Furthermore, the angle between the inclined baffle and the working surface of the cutter head body is 20°-30°.

[0009] Furthermore, the box-type stirring wing has openings on both sides, and blade portions are provided at the openings.

[0010] Furthermore, the blade portion adopts an oblique blade inclined toward one side of the cutter head body.

[0011] Furthermore, the angle between the bevel blade and the working surface of the cutter head is 20°-30°.

[0012] Furthermore, arc-shaped notches are provided on both sides of the plate-type stirring wing.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The invention has a reasonable structural design. By arranging a box-type stirring wing and a plate-type stirring wing arranged in an Archimedean spiral on the cutter head body, the cutter head body is reliably protected and the stones are effectively vibrated and impacted, thereby improving the efficiency of rock breaking and rock layer mixing, and the operating effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a structural schematic diagram of the cross section of the cutter head body in the invention;

[0017] Figure 2 Based Figure 1 The structural diagram of the middle box type stirring wing part;

[0018] Figure 3 A schematic diagram of the structure of the working surface of the cutter head body is created for the present invention;

[0019] Figure 4 This is a schematic diagram of the structure when the box-type stirring wing adopts an inclined baffle in the embodiment of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure when the box-type stirring wing adopts an open form in the embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1-spoke; 2-base; 3-working part; 4-box-type stirring wing; 5-plate-type stirring wing; 6-wear-resistant protective layer; 7-notch; 8-oblique baffle; 9-opening; 10-blade part; 11-notch. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0026] The present invention is described in detail below in conjunction with embodiments.

[0027] A large diameter mud water knife disc mixing wing for sand and gravel formation, such as Figures 1 to 5 As shown, the cutter body includes a box beam structure, the cutter body includes a plurality of spokes 1, each spoke includes a base 2 and a working part 3, a box-type stirring wing 4 and a plurality of plate-type stirring wings 5 ​​are provided at the outer edge of the working part; the box-type stirring wing is arranged at one end of the working part away from the base; each of the plate-type stirring wings is arranged according to an Archimedean spiral on one side of the working surface of the cutter body, and a wear-resistant protective layer 6 is provided on the surface of the box-type stirring wing, and the wear-resistant protective layer can be made of metal wear-resistant materials in the prior art, which will not be described here. Usually, 2-4 plate-type stirring wings can be provided at different positions.

[0028] Arc-shaped notches 11 are provided on both sides of the plate-type stirring wings. During the rock breaking process, the plate-type stirring wings can not only cut and break the rocks using the overall structure, but also the notches 11 can form effective impact and cutting forces on the rocks in the strata. For large rocks, the plate-type stirring wings arranged in the form of Archimedean spirals on different spokes can form a continuous buffer, thereby maximizing the rock crushing effect.

[0029] In addition, since a notch 7 facing outward is provided in the middle of the plate-type stirring wing, each plate-type stirring wing arranged in the form of an Archimedean spiral on different spokes can, with the help of their own notches, form continuous impacts and vibrations on the solid rock from the front (when the cutter head passes over the rock, it is equivalent to each plate-type stirring wing forming an impact on the surface of the solid rock and generating vibration), thereby accelerating the falling off of the solid rock and improving the rock breaking effect and operating efficiency.

[0030] The box-type stirring wings and the plate-type stirring wings arranged in an Archimedean spiral in the invention can effectively protect the outer edge of the cutter disc, avoid severe wear of the outer edge of the cutter disc, and reduce the frequency of replacement. At the same time, each stirring wing also participates in rock breaking and stirring, greatly improving the operating efficiency.

[0031] In an optional embodiment, inclined baffles 8 are provided on both sides of the box-type stirring wing, and the inclined baffles are inclined toward the center of the box-type stirring wing. Usually, the angle between the inclined baffles and the working surface of the cutter head is 20°-30°. The inclined baffles can guide and squeeze the soil or rock in the stratum. When the inclined baffles pass over the rock, they have a certain impact on the rock, generating vibration, which lays the foundation for subsequent rock breaking.

[0032] In another optional embodiment, the box-type stirring wing has openings 9 on both sides, and blades 10 are provided at the openings. The blades are used to form a cutting force on the rock to accelerate the rock breaking efficiency.

[0033] The blade portion adopts an oblique blade inclined toward one side of the cutter body. Preferably, the angle between the oblique blade and the working surface of the cutter body is 20°-30°. The blade portion is tilted inward at a suitable angle, which is just suitable for the oncoming rock, and the blade will not form a head-on collision with the rock (in fact, during operation, the blade portions on both sides of the box-type stirring wing are not mainly used to crush the rock, but only play a role in assisting the rock crushing), thereby increasing the service life of the blade portion. At the same time, small pieces of rock are allowed to pass through the inside of the box-type stirring wing, which has good passability and generates little resistance.

[0034] The invention has a reasonable structural design. By arranging a box-type stirring wing and a plate-type stirring wing arranged in an Archimedean spiral on the cutter head body, the cutter head body is reliably protected and the stones are effectively vibrated and impacted, thereby improving the efficiency of rock breaking and rock layer mixing, and the operating effect is good.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A large diameter mud water cutter disc stirring wing for sand and gravel formation, characterized by: A cutter head body comprising a box beam structure, the cutter head body comprising a plurality of spokes, each spoke comprising a base and a working portion, a box-type stirring wing and a plurality of plate-type stirring wings are arranged at the outer edge of the working portion; the box-type stirring wing is arranged at an end of the working portion away from the base; each of the plate-type stirring wings is arranged according to an Archimedean spiral on one side of the working surface of the cutter head body, and a wear-resistant protective layer is provided on the surface of the box-type stirring wing; The two sides of the box-type stirring wing are provided with inclined baffles, and the inclined baffles are arranged inclined toward the center of the box-type stirring wing; The box-type stirring wing has openings on both sides, and blade portions are arranged at the openings.

2. The large-diameter mud-water cutter disc stirring wing for sand and gravel formation according to claim 1, characterized in that: A notch facing outwards is arranged in the middle of the plate-type stirring wing.

3. The large-diameter mud-water cutter disc stirring wing for sand and gravel formation according to claim 1, characterized in that: The included angle between the inclined baffle and the working surface of the cutter head body is 20°-30°.

4. The large-diameter mud-water cutter disc stirring wing for sand and gravel formation according to claim 1, characterized in that: The blade portion adopts an oblique blade inclined toward one side of the cutter head body.

5. The large-diameter mud-water cutter disc stirring wing for sand and gravel formation according to claim 4, characterized in that: The angle between the oblique blade and the working surface of the cutter head is 20°-30°.

6. The large-diameter mud-water cutter disc stirring wing for sand and gravel formation according to claim 1, characterized in that: Arc-shaped notches are arranged on both sides of the plate-type stirring wing.

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