CN104612203B - One kind has external Quench reinforcement high abrasion excavator bucket teeth - Google Patents

Abstract

The invention provides a high wear-resistant excavator bucket tooth with external chilling ribs, including a bucket tooth body and chilling ribs arranged on the front and rear sides of the bucket tooth body. The bucket tooth body includes an installation area and a working area. and the tip of the tooth, the chilling reinforcing rib is a plurality of columnar structures arranged in parallel to the length direction of the bucket tooth, the chilling reinforcing rib is provided with a cutting slope near the tooth tip, the chilling reinforcing rib The ribs are preferentially solidified during the casting and solidification process of the bucket teeth, forming a chilling effect on the main body of the inner bucket teeth, promoting the grain refinement of the bucket teeth, and making the structure more uniform, so that the bucket teeth have higher rigidity and better durability during excavation. Impact resistance, and can effectively prevent hard objects from damaging bucket teeth, improve the excavation penetration of bucket teeth, and improve its wear resistance. The bucket tooth has a simple structure, can improve the excavation efficiency, reduce the energy consumption of the machine, prolong the service life of the bucket tooth, and have a wide application range.

Description

A high wear-resistant excavator bucket tooth with external chilling ribs

technical field

The invention relates to an excavator accessory, in particular to a highly wear-resistant excavator bucket tooth with external chilled reinforcing ribs.

Background technique

Excavator bucket teeth are an important part of the excavator, and the combined bucket teeth composed of tooth seats and tooth tips are easy-to-wear parts. Stress Analysis The working surface of the bucket tooth is in contact with the excavated object, and the stress conditions are different in different working stages during a complete excavation process. When the tip of the bucket first touches the surface of the material, due to the faster speed, the tip of the bucket receives a stronger impact. If the yield strength of the bucket tooth is low, plastic deformation will occur at the tip. As the excavation depth increases, the stress on the bucket tooth will change. When the bucket teeth cut the material, the bucket teeth and the material move relative to each other, and a large positive extrusion force is generated on the surface, thereby generating a large friction force between the bucket teeth working surface and the material. If the material is hard rock, concrete, etc., the friction force is very high. Repeated action of this process will cause different degrees of surface wear on the working surface of the bucket teeth, and then produce deep furrows, which will affect the service life of the bucket teeth.

The service life of the bucket teeth is very short, and the replacement is relatively frequent, which not only affects the work efficiency, but also wastes a lot of raw materials. low ability. In order to improve work efficiency, only new bucket teeth can only be replaced frequently, which greatly increases the cost of use.

Contents of the invention

In order to solve the above problems, the present invention discloses a high-wear-resistant excavator bucket tooth with external chilling ribs. The main body of the bucket teeth is provided with parallel cylindrical chilling ribs to increase the strength of the bucket teeth when excavating soil. Higher, better wear resistance and impact resistance, improve the excavation efficiency, reduce the energy consumption of the machine, and prolong the service life of the bucket teeth.

To achieve the above object, the present invention proposes the following technical solutions:

A bucket tooth of a high wear-resistant excavator with external chilled reinforcing ribs, comprising: a bucket tooth main body, the bucket tooth main body includes: a mounting area, a working area and a tooth tip, and the mounting area is provided with mounting holes for Connected with the bucket tooth seat, the working area is located between the tip of the tooth and the installation area. The bucket tooth of the excavator also includes: chilling reinforcing ribs, and the chilling reinforcing ribs are arranged on the front and rear sides of the bucket tooth body. The chilled reinforcing rib is a plurality of columnar structures arranged in a row parallel to the length direction of the bucket teeth.

Further, the chilled reinforcing ribs are densely arranged on the front and rear sides of the bucket tooth body, accounting for more than 50% of the total area of the front and rear sides, more than 75% of the total area of the working area, and more than 80% of the total area of the tooth tips.

Further, the connection between the working area and the installation area adopts a circular arc surface transition, the thickness of the working area is 1/5~3/5 of the thickness of the installation area, and the thickness from the working area to the tooth tip gradually decreases. The tip is isosceles trapezoidal.

Further, the cylindrical structure is provided with a cutting slope near the working end surface of the tooth tip. Connected, the cutting angle formed by the cutting slopes on both sides is less than 50°.

Further, gaps are provided between the columnar structures, and the gaps are parallel to the columnar structures.

Further, there are 4-30 chilling ribs arranged on both sides of the main body of the bucket teeth, the length of the chilling ribs is 1/10~1 of the length of the main body of the bucket teeth, the height is 1~40mm, and the width is 2~2mm. 30mm, the gap width is 1~40mm.

Further, the height of the columnar structure gradually decreases from the installation area to the tooth tip.

Further, the cross-sectional shape of the columnar structure includes: circular arc, triangle, rectangle and trapezoid.

The object of the present invention is to provide a high wear-resistant excavator bucket tooth with external chilling ribs. The two sides of the main body of the bucket teeth are provided with columnar chilling ribs parallel to each other, so that the structure of the bucket teeth is uniform and the crystal grains are fine. , the force is more uniform, the bucket teeth have higher strength and better wear resistance during excavation, which can effectively avoid blockage and damage of gravel, rocks, concrete, etc., improve the excavation penetration of bucket teeth, improve their excavation efficiency, and reduce The energy consumption of the machine prolongs the service life of the bucket teeth, reduces the breakage of the bucket teeth due to excessive use, and improves the strength and stability of the bucket teeth.

Description of drawings

Figure 1 is a schematic front view of the structure of the bucket tooth body without chilling ribs;

Fig. 2 is a schematic side view of the structure of the bucket tooth body without chilling ribs;

Fig. 3 is a schematic front view of the structure of the excavator bucket teeth with chilled ribs in the present invention;

Fig. 4 is a schematic side view of the structure of the excavator bucket tooth with chilled reinforcing ribs of the present invention;

Fig. 5 is an A-A sectional view in a schematic side view of the excavator bucket tooth with chilled ribs.

The meanings represented by the symbols in the figure: Bucket tooth body——1, chilling rib——2, installation area——11, working area——12, tooth tip——13, installation hole——111, tooth tip Working end face——131, cylindrical structure——21, clearance——22, cutting bevel——211, equal width section——221, shrinkage section——222.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not used to limit the present invention. It should be noted that the words "front" and "rear" used in the following description respectively refer to the The front side faces and the other side parallel to this side faces.

On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

A high-wear-resistant excavator bucket tooth with external chilling ribs, including a bucket tooth body 1 and chilling ribs 2, the bucket tooth body 1 is shown in Figures 1 and 2, and the bucket tooth body 1 Including the installation area 11, the working area 12 and the tooth tip 13, the installation area 11, the working area 12 and the tooth tip 13 are an integrated structure, the installation area 11 is provided with a mounting hole 111 for connecting with the bucket tooth seat, The working area 12 is located between the tooth tip 13 and the installation area 11, the connection between the working area 12 and the installation area 11 adopts a circular arc surface transition, and the thickness of the working area is 1/5~3/ of the thickness of the installation area 11 5. The thickness from the working area 12 to the tooth tip 13 gradually decreases, the tooth tip 13 is in the shape of an isosceles trapezoid, and the shape of the tooth tip working end surface 131 is rectangular, which effectively reduces the area of the tooth tip working end surface 131, and the During operation, the working end surface 131 of the tooth tip has a small contact area with the ground, and the thickness of the working area 12 is obviously smaller than that of the installation area 11, which effectively reduces the cutting angle of the tooth tip 13 and the working area 12, and the resistance received during excavation is small, and more It is easy to insert into the ground, and the excavation efficiency is high, but the working area 12 and the tip 13 with small thickness are prone to breakage during operation, so it is necessary to install the above-mentioned chilling rib 2 .

As shown in Figure 3 and Figure 4, the chilling ribs 2 are densely arranged on the front and rear sides of the bucket tooth main body 1, accounting for more than 50% of the total area of the front and rear sides, accounting for more than 75% of the total area of the working area 12, and accounting for The total tip area is more than 80%. The chilled ribs 2 are several columnar structures 21 arranged in parallel to the length direction of the bucket teeth. The columnar structures 21 are from the installation area 11 to the tooth tip 13. Gradually lower, the columnar structure 21 is provided with a cutting slope 211 near the working end surface 131 of the tooth tip. 211 is in contact with the working end surface 131 of the tooth tip, the cutting angle formed by the cutting slopes 211 on both sides is less than 50°, the length of the cutting slope 211 is less than the length of the tooth tip 13, and there is a gap between the cylindrical structures 21 22. The gap 22 is parallel to the columnar structure 21. The gap 22 includes an equal-width segment 221 and a contraction segment 222. The width of any position of the equal-width segment 221 is equal, and the width of the contraction segment 222 gradually shrinks to 0, the equal-width section 221 is set between the cylindrical structure 21 and the cutting slope 211, and the contraction section 222 is set between the chip slope 221 and the working end surface 131 of the tooth tip and between the chip slope 221 and the tooth The width of the intersection of the pointed working end surface 131 is 0. Compared with the traditional bucket teeth with ribs, the bucket teeth with the structure of the present invention are equipped with chilled ribs 2 with good wear resistance and high strength in the main wear positions of the bucket teeth working area 12 during the excavation operation, so that the excavation The cold reinforcing rib 2 replaces the bucket tooth working area 12 as the main wearing part, which enhances the overall wear resistance of the bucket tooth and prolongs the service life of the bucket tooth. Moreover, the chilling reinforcing rib 2 also effectively improves the working area 12 and the tooth tip 13. The strength and bending resistance of the bucket teeth can reduce the breakage of the bucket teeth due to excessive use. The cutting slope 211 on the chilling rib 2 is used as an auxiliary cutting surface to improve the excavation penetration of the bucket teeth, further improve the excavation efficiency, and reduce the machine energy consumption.

As shown in Figure 5, the two sides of the columnar structure 21 are vertical surfaces, the top end is a smooth transitional arc, the bottom end of the gap 22 is a smooth transitional arc, and the width of the columnar structure 21 is greater than the The width of the gap 22, and the distance between the bottom ends of the gap 22 corresponding to the two sides is equal to the thickness of the working area 12 or the thickness of the tip of the tooth. The cross-sectional shape of the columnar structure 21 includes: arc shape, triangle, rectangle and trapezoid. There are 4-30 chilling reinforcing ribs 2 arranged on both sides of the bucket tooth main body 1, the length of the chilling reinforcing ribs 2 is 1/10~1 of the length of the bucket tooth main body 1, the height is 1~40mm, and the width is 2~ 30mm, the width of the gap 22 is 1~40mm, this structure can be applied to different types of bucket teeth.

In the bucket tooth structure mentioned above, during the quenching and solidification process of bucket tooth casting, since the chilling rib 2 covers most of the two sides of the bucket tooth body 1, and the chilling rib 2 is placed on the outer layer of the bucket tooth body 1 , in the chilling process, the chilled ribs 2 are preferentially solidified to form a chilled layer, and form a chilling effect on the inner bucket tooth body 1, which promotes the grain refinement of the bucket teeth and makes the structure more uniform, so that the strength of the workpiece after forming Higher, better wear resistance, and in the quenching treatment process, the quenching ribs that play a major role in the bucket tooth structure of the present invention are located in the outer layer, because the quenching has the characteristics of good edge hardenability, and the bucket with the same cross-sectional size Compared with the bucket tooth structure of the present invention, the effect of quenching treatment is better.

The beneficial effect of the present invention is that the two sides of the main body of the bucket teeth are provided with columnar chilled ribs parallel to each other, so that the structure of the bucket teeth is uniform, the crystal grains are fine, the force is more uniform, and the strength of the bucket teeth is higher during excavation. Better wear resistance, can effectively avoid blockage and damage of gravel, rock, concrete, etc., improve the excavation penetration of bucket teeth, improve the excavation efficiency, reduce the energy consumption of the machine, prolong the service life of bucket teeth, reduce the In the case of excessive use and breakage, the strength and stability of the bucket teeth are improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any other form, and any modification or equivalent change made according to the technical essence of the present invention still belongs to the scope of protection required by the present invention .

Claims (5)

1. A bucket tooth of a high wear-resistant excavator with external chilled reinforcing ribs, comprising: a bucket tooth body, the bucket tooth body including: an installation area, a working area and a tooth tip, and the installation area is provided with an installation hole, Used to connect with the tooth seat, the working area is located between the tip of the tooth and the installation area, and it is characterized in that the bucket tooth of the excavator also includes: chilling reinforcement ribs, the chilling reinforcement ribs are arranged on the main body of the bucket teeth The two working sides of the bucket teeth, the chilling ribs are several columnar structures arranged in parallel to the length direction of the bucket teeth, and the chilling ribs are densely arranged on the two working sides of the bucket teeth body, accounting for More than 50% of the total area of the two working sides, more than 75% of the total area of the working area, and more than 80% of the total area of the tooth tip; the cylindrical structure is provided with a cutting slope near the working end surface of the tooth tip, and the cutting slope is close to the tooth tip. The width of the working end face of the tip is greater than the width of the cutting bevel close to the columnar structure, the cutting bevel is in contact with the working end face of the tooth tip, and the cutting angle formed by the cutting bevels on both sides is less than 50°; There is a gap between them, the gap is parallel to the columnar structure, and the width of the columnar structure is larger than the width of the gap. 2. The excavator bucket tooth according to claim 1, characterized in that the connection between the working area and the installation area adopts a circular arc surface transition, and the thickness of the working area is 1/5 to 3/5 of the thickness of the installation area , the thickness from the working area to the tip of the tooth decreases gradually, and the tip of the tooth is in the shape of an isosceles trapezoid. 3. The excavator bucket tooth according to claim 1, characterized in that there are 4-30 chilling ribs arranged on both sides of the bucket tooth body, and the length of the chilling ribs is 1 of the length of the bucket tooth body. /10~1, the height is 1~40mm, the width is 2~30mm, and the gap width is 1~40mm. 4. The excavator bucket tooth according to claim 1, characterized in that the height of the cylindrical structure gradually decreases from the installation area to the tooth tip. 5. The excavator bucket tooth according to claim 1, characterized in that, the cross-sectional shape of the cylindrical structure comprises: arc shape, triangle shape, rectangle shape and trapezoid shape.