CN111827049A - A kind of paver screw blade and paver - Google Patents

Abstract

The invention discloses a paver screw blade and a paver, belonging to the technical field of road construction equipment. A material guide surface opposite to the back is characterized in that: the material guide surface is provided with a grid-like rib, and the grid-like rib forms a plurality of grooves on the material guide surface. The helical blade of the invention is light in weight, wear-resistant and has high conveying efficiency.

Description

A kind of paver screw blade and paver

technical field

The invention belongs to the technical field of road construction equipment, and particularly relates to a paver screw blade and a paver.

Background technique

In the construction and maintenance of highways and urban roads, asphalt or concrete paver has been widely used at home and abroad to perform asphalt or concrete paving work on the road surface. The screw distributor is the key part of the material flow during the construction process of the paver, and the screw blade is the key part of the screw distributor for conveying materials with high viscosity and compressibility. In the process, it has and completes the functions of stirring and mixing materials at the same time.

The existing paver helical blade mainly includes a sleeve body as a connecting body and a blade body surrounding the sleeve body and having a certain helical angle. The sleeve body drives the blade body and the blade body to rotate, the surface of the blade body extruding the material is the material guide surface, the working surface of the spiral blade, and the opposite side is the back surface. The current spiral blade has the following disadvantages: 1. The spiral blade works for a long time, and the material guide surface of the blade body is easily worn by rough materials, and the service life is short. In order to resist wear, a wear-resistant layer is added on the guide surface of some existing blade bodies, which not only increases the overall cost of the helical blade, but also increases the overall quality of the helical blade and increases the energy consumption of the equipment. 2. In order to ensure the strength of the blade body in the existing helical blade, the thickness of the blade body is generally large, resulting in a large blade body mass and high equipment energy consumption. 3. The blade body of the helical blade is flat, and the friction between it and the material is small, the material is easy to slip when it contacts the guide surface of the blade body, and the conveying efficiency of the material is not high.

SUMMARY OF THE INVENTION

In view of the problems existing in the prior art, the present invention provides a paver screw blade and a paver that solve the problems of short service life, high quality and low conveying efficiency of the existing screw blades.

The present invention is realized in this way, a paver screw blade includes a blade body and a connecting body arranged on one side of the blade body, the blade body includes a back surface and a material guide surface opposite to the back surface, It is characterized in that: the material guide surface is provided with a grid-shaped rib, and the grid-shaped rib forms a plurality of grooves on the material guide surface.

In the present invention, the guide surface of the blade body is provided with grid-like ribs, which can reduce the mass of the blade body while ensuring the strength of the blade body, thereby reducing the overall mass of the helical blade, reducing the operating load of the equipment, and reducing the Small device energy consumption.

The grooves formed on the guide surface of the blade body are conducive to the adhesion of materials, and the materials adhere to the guide surface of the blade body and form a rough material wear-resistant layer, which protects the blade body and effectively resists wear effect, thereby significantly prolonging the service life of the helical blades. The material density of the material is much smaller than that of the blade body, so the overall quality of the helical blade with the material wear-resistant layer is still lower than that of the traditional thick helical blade.

The grooves on the guide surface of the blade body make the material form rough unevenness on the guide surface, and the friction force with the conveyed material is large, the material will not slip during the conveying process, and the conveying efficiency is high.

In the above technical solution, preferably, the grid-like ribs form a regular polygonal grid on the material guide surface of the blade body. The angle formed between the edges of the polygonal mesh is more conducive to the adhesion of the material in the rotating state of the blade body, and the connection between the material protection layer formed on the material guide surface of the blade body and the blade body is more reliable.

In the above technical solution, preferably, the outer edge of the material guide surface of the blade body is provided with an outer edge body connected with the grid-like rib body.

In the above technical solution, preferably, an inner edge body arranged around the connecting body is provided at a position of the material guide surface of the blade body close to the connecting body.

In the above technical solution, preferably, the grid-like ribs form a regular hexagonal grid on the material guide surface of the blade body.

In the above technical solution, preferably, the included angle between the inner side surface of the grid-shaped rib body and the bottom surface of the groove is an acute angle.

Another object of the present invention is to provide a paver equipped with any one of the above-mentioned helical blades.

Description of drawings

Fig. 1 is the side view of the present invention;

Fig. 2 is the perspective view of the present invention;

3 is a schematic diagram of the structure of the included angle between the inner side surface of the grid-like rib body and the bottom surface of the groove in the present invention.

In the figure, 1, the blade body; 2, the connecting body; 3, the grid-like rib body; 4, the groove; 5, the outer edge body; 6, the inner edge body.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

In order to solve the disadvantages of short service life, large quality and low conveying efficiency of the existing helical blades, the present invention provides a paver helical blade and a paver. In order to further illustrate the structure of the present invention, the detailed description is as follows in conjunction with the accompanying drawings:

Example 1

Please refer to Fig. 1 and Fig. 2 , a paver helical blade includes a blade body 1 and a connecting body 2 disposed on one side of the blade body. In this embodiment, the blade body 1 and the connecting body 2 are integral castings. The connecting body 2 is in the shape of a bearing bush. The connecting body 2 is provided with holes for installing locking bolts.

The blade body 1 includes a back surface and a material guide surface opposite to the back surface. The material guide surface is the surface in the same direction as the material conveying direction, and is the action surface of the blade body 1 and the material. A grid-like rib 3 is provided on the material guide surface, and the grid-like rib 3 forms a plurality of grooves 4 on the material guide surface. In this embodiment, the grid-shaped rib body 3 and the blade body 1 are integrally formed by casting. A circular arc chamfering transition is adopted between the mesh-like rib 3 and the material guide surface of the blade body 1 .

In this embodiment, the grid-like tendons 3 form a regular hexagonal grid on the material guide surface of the blade body 1 . The outer edge of the material guide surface of the blade body 1 is provided with an outer edge body 5 connected with the grid-like rib body 3 . An inner edge body 6 surrounding the connecting body 2 is provided at a position of the material guide surface of the blade body 1 close to the connecting body 2 . The grid-like ribs 3 , the outer edge body 5 and the inner edge body 6 form a sealed grid structure with the same height on the material guide surface of the blade body 1 .

As shown in FIG. 3 , the angle between the inner side of the grid-like rib 3 and the bottom surface of the groove 4 is an acute angle, that is, the angle between the inner side of the grid-like rib 3 and the vertical surface is 0°<α<30° . It is realized that the groove 4 is in the shape of a constriction, and this structural design is more conducive to the attachment of materials.

Embodiment 2

A paver is installed with any one of the above-mentioned helical blades. That is, the paver has a rotatable paver shaft. A plurality of the helical blades are fixedly installed on the paving rotating shaft by screws, and the helical blades form a helical blade from one end of the paving rotating shaft and the other end.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, The formation of circular grooves, or the formation of rectangular or triangular grooves surrounded by grid-like tendons, shall all be included within the protection scope of the present invention.

Claims (7)

1. A paver helical blade, comprising a blade body and a connecting body arranged on one side of the blade body, the blade body comprising a back surface and a material guide surface opposite to the back surface, characterized in that: the The material guide surface is provided with a grid-like rib, and the grid-like rib forms a plurality of grooves on the material guide surface. 2 . The paver screw blade according to claim 1 , wherein the grid-like ribs form a regular polygon mesh on the material guide surface of the blade body. 3 . 3 . The paver helical blade according to claim 1 , wherein the outer edge of the material guide surface of the blade body is provided with an outer edge body connected with the grid-like rib. 4 . 4 . The paver screw blade according to claim 1 , wherein the position of the material guide surface of the blade body close to the connecting body is provided with an inner edge body arranged around the connecting body. 5 . 5 . The paver screw blade according to claim 2 , wherein the grid-like ribs form a regular hexagonal grid on the material guide surface of the blade body. 6 . 6 . The paver screw blade according to claim 1 , wherein the included angle between the inner side surface of the grid-like rib and the bottom surface of the groove is an acute angle. 7 . 7. A paver, characterized in that: it is installed with the helical blade of any one of claims 1-6.

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