CN2072547U

CN2072547U - Fast exchanging sleeving bucket tooth

Info

Publication number: CN2072547U
Application number: CN 90214834
Authority: CN
Inventors: 谢立
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-08-06
Filing date: 1990-08-06
Publication date: 1991-03-06

Abstract

The utility model relates to a fast exchanging sleeve bucket tooth for the buckets of loaders and dredgers. A bucket tooth base is embedded and sheathed in work teeth via a slope, and the bucket tooth base and the work teeth can be reliably positioned and fixedly connected via a flexible connection pin. When the work teeth are ineffective, flexible filler material in the flexible connection pin only needs simply heating to the fusion point, the connection pin is automatically dropped off, and the work teeth can be rapidly and conveniently exchanged. The utility model can fundamentally keep the mechanical parameter and the mechanical property of the original complete machine, and the work is safe and reliable. The work teeth are more wear-resistant and easy to be repaired and exchanged, and the maintenance process and the equip requirement can be reduced. Workers' labor intensity can be reduced greatly, and the wage can be increased by multiple times.

Description

Fast exchanging sleeving bucket tooth

The utility model relates to a kind of bucket tooth that is used for all kinds of loaders and thinning machine scraper bowl.

All adopting welding or thread connection scraper bowl and these two kinds of rigid connection methods of bucket tooth on employed all kinds of loaders and the thinning machine at present.In case its repair mode has two kinds behind the bucket tooth wear out failure: a kind of is to prescind to scrap bucket tooth and weld new bucket tooth or Repair Welding inefficacy bucket tooth again, and it not only consumes energy big but also solder technology is required also very high, also damages the scraper bowl fertile material easily; Another kind is the bucket tooth that changes with thread connection, but because the working condition of engineering machinery is very abominable, with being easy to oxidized corrosion after the Bolt Connection, brings very big inconvenience equally for repair.Simultaneously, owing to change, blow and cut bucket tooth bucket tooth integral body is scrapped, waste of material is very big, and is very uneconomical.

The purpose of this utility model just is to provide a kind of technological means that can change or repair old bucket tooth fast at above-mentioned disadvantage.

Invention main points of the present utility model are bucket tooth is divided into bucket tooth seat and work tooth two parts, can utilize the inclined plane principle suit chimeric between bucket tooth seat and the work tooth, and can the two suit are connected and fixed by attachment pegs.

Figure 1 shows that the assembling drawing of the utility model embodiment, Figure 2 shows that the schematic diagram of flexible attachment pegs structure design.

Among the figure, (1) is the scraper bowl gusset piece of loader or thinning machine, and (2) are the bucket tooth seat that combines as a whole with scraper bowl gusset piece (1), and (6) are the work tooth.In order to make bucket tooth seat (2) and work tooth (6) have reliable chimeric contact surface, it is α that the top of bucket tooth seat (2) can be designed to chimeric angle ₂The inclined-plane.Work tooth (6) with bucket tooth seat (2) top between connect by the inclined plane embedding suit.When work tooth when work, the power on the work tooth of acting on is after decomposing, and the component that makes progress along chimeric inclined-plane can make chimeric better effects if, and another component can make the work tooth press the bucket tooth seat, makes chimeric more firm.The design principles of chimeric angle is the convenience that makes chimeric angle be beneficial to repair from the locking angle greater than bevel friction on the one hand, and in order to make the physical dimension compactness, this chimeric angle can be smaller as far as possible on the other hand.So the uniformity that should keep the work plane wall thickness on the angle design principles on work tooth inclined-plane is its top angle α ₂Can be slightly larger than bottom angle α ₁In engineering, α ₁Generally can be chosen in about 20 °.

By behind the inclined plane embedding suit, can pass through the attachment pegs positioning and fixing between work tooth (6) and the bucket tooth seat (2).Because the contact area of chimeric surface is bigger, attachment pegs can make the work tooth more reliable with connecting of bucket tooth seat.From the stressing conditions analysis in work tooth when work as can be seen, the lower link pin is in the non-stress state basically in working order.If adopt flexible attachment pegs, both had certain joint stiffness after then can making the work tooth and the bucket tooth seat connecting, have certain tolerance again.In Fig. 1 and Fig. 2, (3) are the working metal alligator of flexible attachment pegs, and (5) are metal bucket tooth seat pin, leave appropriate gap between (3) and (5) and are used for filling flexible packing material (4).Flexible packing material (4) preferably select for use have better chemical stability, the sensitiveness to variations in temperature in the normal temperature scope is relatively poor, and has the material of certain resilience, for example can select modified rubber for use.The total length L of attachment pegs ₁Can be less than work transverse tooth thickness degree B ₁Bucket tooth seat pin (5) is L with the contact surface length of bucket tooth seat (2) ₂, can touch width B with the bucket tooth seated connection ₂Corresponding, i.e. L ₂〉=B ₂φ among the figure ₂Be the pin-and-hole diameter on the bucket tooth seat, should with the work plane arc radius R of bucket tooth seat (5) ₂Quite.Pin-and-hole on the work tooth can be oval, is respectively φ by diameter ₁And φ ₃The hole combine φ ₃Diameter should with work alligator (3) arc radius R ₃Quite, φ ₁It only is the fabrication hole of to install and being provided with in order to cooperate.In reality is made, R ₂Approximately less than (φ ₂)/2, R ₃Approximately less than (φ ₃)/2.Make and connect reliably in order to reduce relatively moving between bucket tooth seat and the bucket tooth seat pin, on bucket tooth seat pin (5), positioning step R can be set ₁, the pin-and-hole φ on the bucket tooth seat ₂With the pin-and-hole φ on the work tooth ₃The hole between the gap be δ, be used to install flexible attachment pegs.Flexible attachment pegs width under free state is C ₁, C ₁＞δ; When attachment pegs was installed, the compressed flexible attachment pegs made C ₁＜δ can make attachment pegs pack into smoothly in bucket tooth seat pin hole and the work alligator hole; After the installation, flexible attachment pegs is because resilience makes C and be pressed in bucket tooth seat pin hole and the work alligator hole ₁=δ.Reliability for further assurance work tooth connects with bucket tooth cover for seat dress can be provided with several grooves of cooling down respectively in work tooth surface groove.When implementing the utility model, the tooth of also can considering to work is selected the material more wear-resisting than bucket tooth seat for use, so that increase abrasion resistance on the basis that reduces maintenance cost.

The utility model compared with prior art, former complete machine mechanical parameter and mechanical performance have not only basically been kept, and when the work tooth of bucket tooth lost efficacy, only must add simply the thermal flexibility attachment pegs to the fusion point of flexible packing material, attachment pegs gets final product self falling, reaches the purpose that changes fast inefficacy work tooth. Because the utility model only need be changed or the repair toothed portion the inefficacy bucket tooth, thus avoided scrapping owing to overhauling the bucket tooth integral body that causes, thus save a large amount of raw material. Technological equipment when the utility model also can reduce the bucket tooth reparation reduces repair and change the technological requirement of bucket tooth, the several times of can increasing work efficiency when reducing labor strength.

Claims

1, a kind of quick change sleeve type bucket tooth is characterized in that it is made of bucket tooth seat (2), work tooth (6) and attachment pegs, can utilize the inclined plane embedding suit between work tooth (6) and the bucket tooth seat (2), and by attachment pegs the two positioning and fixing be connected.

2, bucket tooth as claimed in claim 1 is characterized in that mentioned attachment pegs can adopt and has the flexible attachment pegs that certain tolerant performance has certain joint stiffness again.

3, bucket tooth as claimed in claim 2 is characterized in that said flexible attachment pegs can be made of work alligator (3), bucket tooth seat pin (5) and flexible packing material (4), can be provided with positioning step R on bucket tooth seat pin (5) ₁, leave the gap between work alligator (3) and the bucket tooth seat pin (5) and be used for filling flexible packing material (4).

4, bucket tooth as claimed in claim 3 is characterized in that said flexible packing material (4) can adopt modified rubber.