CN111794307A

CN111794307A - Excavator bucket tooth

Info

Publication number: CN111794307A
Application number: CN202010733112.3A
Authority: CN
Inventors: 张灵
Original assignee: NINGBO YINZHOU PRECISION CASTING HARDWARE FACTORY
Current assignee: NINGBO YINZHOU PRECISION CASTING HARDWARE FACTORY
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-10-20
Anticipated expiration: 2040-07-27
Also published as: CN111794307B

Abstract

The invention discloses an excavator bucket tooth, which comprises a bucket tooth main body, a tooth holder and a locking mechanism for connecting the bucket tooth main body and the tooth holder, wherein the head part of the bucket tooth main body is inserted into the tooth holder; the locking mechanism includes: the side wall of the bolt is provided with a bulge, and the bolt penetrates through the tooth holder through hole and the bucket tooth through hole to lock the relative motion of the bucket tooth main body and the tooth holder; the elastic limiting ring is embedded into the bucket tooth main body and is provided with a bolt hole allowing the bolt to pass through and a convex hole allowing the protrusion to pass through; the elastic limiting ring is further provided with a locking groove, and the locking groove is adjacent to the convex hole and the bolt hole. This application compares in current excavator bucket tooth structure compacter, the locking effect is better and stability is better.

Description

Excavator bucket tooth

Technical Field

The invention relates to the technical field of excavators, in particular to an excavator bucket tooth.

Background

Excavator teeth are wear parts of excavators, which generally include a tooth body and a tooth holder connected by a pin. In the bucket teeth on the market at present, a pin piece is generally directly knocked into a tooth holder to fix a bucket tooth main body or the pin piece penetrates through the tooth holder and the bucket tooth main body. Also there is the design at present to set up the arch on the round pin spare, set up on the toothholder and supply protruding pivoted rotation recess, the arch rotates on the coplanar all the time in rotating the recess, it is spacing through the locating part on the toothholder to target in place the back, such structural design compares earlier the spacing installation effect of round pin spare better, but still there is the bucket tooth in-process, the arch of round pin spare probably withdraws from the limiting position and appears rotating in rotating the recess the condition, the bucket tooth main part just can relax with the toothholder connection like this, can increase adjustment and maintenance cost.

Disclosure of Invention

In view of the above disadvantages in the prior art, the technical problem to be solved by the present invention is to provide an excavator bucket tooth, which is used for solving the problems of poor pin limiting effect, low stability and the like in the bucket tooth in the prior art.

The invention solves the technical problem and adopts the technical scheme that the excavator bucket tooth comprises a bucket tooth main body, a tooth holder and a locking mechanism for connecting the bucket tooth main body and the tooth holder, wherein the head part of the bucket tooth main body is inserted into the tooth holder, a tooth holder through hole allowing the locking mechanism to pass through is arranged at the head part of the tooth holder in a penetrating manner, and a bucket tooth through hole allowing the locking mechanism to pass through is arranged on the bucket tooth main body in a penetrating manner;

the locking mechanism includes: the side wall of the bolt is provided with a bulge, and the bolt penetrates through the tooth holder through hole and the bucket tooth through hole to lock the relative motion of the bucket tooth main body and the tooth holder; the elastic limiting ring is embedded into the bucket tooth main body and is provided with a bolt hole allowing the bolt to pass through and a convex hole allowing the protrusion to pass through; the elastic limiting ring is also provided with a locking groove, and the locking groove is adjacent to the convex hole and the bolt hole; the tooth holder through hole is adjacent to a hole for accommodating the protrusion to pass through; when the bolt is rotated to enable the protrusion to rotate from the convex hole to the locking groove, the bolt is locked through axial rotation and radial movement.

Preferably, when viewed from the center of the elastic limiting ring to the outer circumference, the depth of the pin hole gradually increases along the direction from the convex hole to the pin hole.

Preferably, an elastic part is arranged on the elastic limiting ring at a position between the locking groove and the convex hole.

Preferably, the wall thickness of the elastic part is smaller than that of other positions of the elastic limiting ring.

Preferably, the elastic limit ring is provided with a first step, and the bucket tooth main body is provided with a second step; the first step and the second step are matched to lock the axial rotation of the elastic limiting ring.

Compared with the prior art, the invention has at least the following beneficial effects:

1. offer the locking groove in this application on the elasticity spacing ring, when the arch is rotated the locking groove, its locking groove can restrict bellied axial rotation and radial movement, and because the elasticity spacing ring is the elastic component, after the arch is rotated to the locking groove, the inner wall in locking groove can support the arch, the arch can not remove at will in the use of bucket tooth and make bucket tooth main part break away from with the toothholder, its locking effect is better, stability is better.

2. Be in on the elasticity spacing ring the locking groove with the position is equipped with the elasticity portion between the bulge, and the wall thickness of elasticity portion will be less than the wall thickness of other positions of elasticity spacing ring, can be so that the process that the bulge rotated the locking groove from the bulge is more smooth and easy, can use littleer power just enough to accomplish, and can not influence the locking dynamics in locking groove.

3. The elastic limiting ring is provided with a first step, the bucket tooth main body is provided with a second step, and the first step and the second adjusting are matched to prevent the elastic limiting ring from rotating and shaking relative to the bucket tooth main body.

Drawings

FIG. 1 is a schematic structural view of an excavator tooth in an embodiment;

FIG. 2 is a schematic structural diagram of a tooth body and a locking mechanism according to an embodiment;

FIG. 3 is a schematic structural view of a tooth body according to an embodiment;

FIG. 4 is a schematic structural view of a tooth holder in the embodiment;

FIG. 5 is a schematic structural view of a lock mechanism in the embodiment;

FIG. 6 is a schematic structural view of an embodiment of an elastic retainer ring;

FIG. 7 is a schematic structural diagram of a plug according to an embodiment;

in the figure:

100-toothholder, 110-toothholder through hole;

200-bucket tooth main body, 210-bucket tooth through hole, 211-second step;

300-locking mechanism, 310-bolt, 311-bulge, 320-elastic limiting ring, 321-bolt hole, 322-convex hole, 323-locking groove, 324-first step and 325-elastic part.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Referring to fig. 1 to 7, the present invention discloses an excavator tooth, including a tooth body 200, a tooth holder 100 and a locking mechanism 300 for connecting the tooth body 200 and the tooth holder 100, wherein the head of the tooth body 200 is inserted into the tooth holder 100, a tooth holder through hole 110 for allowing the locking mechanism 300 to pass through is formed at the head of the tooth holder 100, and a tooth through hole 210 for allowing the locking mechanism 300 to pass through is formed at the tooth body 200;

the lock mechanism 300 includes: a latch 310, a side wall of which is provided with a protrusion 311, the latch 310 passing through the tooth holder through hole 110 and the tooth through hole 210 to lock the relative movement between the tooth body 200 and the tooth holder 100; an elastic retainer 320 inserted into the tooth body 200, the elastic retainer 320 having a pin hole 321 allowing the pin 310 to pass therethrough and a protrusion hole 322 allowing the protrusion 311 to pass therethrough; the elastic limiting ring 320 is further provided with a locking groove 323, and the locking groove 323 is adjacent to the convex hole 322 and the bolt hole 321; the through-hole 110 of the tooth holder is adjacent to a hole for accommodating the protrusion 311; when the latch 310 is rotated so that the protrusion 311 is rotated from the protrusion hole 322 to the locking groove 323, the axial rotation and radial movement of the latch 310 are locked.

In this embodiment, the elastic limiting ring 320 is provided with the locking groove 323, when the protrusion 311 is rotated to the locking groove 323, the locking groove 323 can limit the axial rotation and the radial movement of the protrusion 311, and because the elastic limiting ring 320 is an elastic member, when the protrusion 311 is rotated to the locking groove 323, the inner wall of the locking groove 323 can abut against the protrusion 311, and the protrusion 311 cannot move freely in the use process of the bucket tooth to separate the bucket tooth body 200 from the tooth holder 100, so that the locking effect is better, and the stability is better.

The depth of the locking groove 323 gradually increases from the center of the elastic limiting ring 320 to the outer circumference, along the direction of the bolt hole 321 toward the lug hole 322.

Specifically, at the locking groove 323, the position farther from the position of the boss hole 322 is deeper, that is, the protrusion 311 enters the locking groove 323 from the shallowest depth and is locked at the deepest depth. Because the elastic limiting ring 320 has certain elasticity, the bulge 311 is tightly pressed against the elastic limiting ring 320 at the deepest part of the locking groove 323, and cannot axially rotate; meanwhile, when the pin 310 tends to move radially, it is also limited by the elastic limiting ring 320 and the tooth body 200.

An elastic portion 325 is disposed on the elastic retainer ring 320 between the locking groove 323 and the protruding hole 322.

The wall thickness of the elastic portion 325 is smaller than the wall thickness of the elastic limiting ring 320 at other positions.

As shown in fig. 2 and 6, in the present embodiment, a gap is formed between the position of the elastic portion 325 and the tooth body 200, and when the bolt 310 is rotated, the gap allows the elastic portion 325 to be jacked up by the protrusion 311 to leave a certain reserved space, so that the locking process is smoother, and the bolt 310 can be rotated with a smaller force to achieve locking.

On the other hand, if the elastic portion 325 is not provided, when the bolt 310 is rotated, the protrusion 311 may severely compress the inner wall of the elastic retainer ring 320, which may require a larger force to rotate the bolt 310, which is not favorable for the locking action, and may easily cause unrecoverable damage to the elastic retainer ring 320. Therefore, the elastic portion 325 can protect the elastic limiting ring 320, and the service life of the elastic limiting ring is prolonged.

The elastic limit ring 320 is provided with a first step 324, and the bucket tooth main body 200 is provided with a second step 211; the first step 324 is engaged with the second step 211 to lock the axial rotation of the elastic limiting ring 320.

Because the periphery of the elastic limiting ring 320 is circular, when the bolt 310 is rotated, the elastic limiting ring 320 is easily driven to rotate relative to the bucket tooth main body 200, so that the bucket tooth main body 200 and the tooth holder 100 are shaken or loosened, and the elastic limiting ring 320 is worn by rotating for many times. Therefore, the first step 324 is matched with the second step 211, and when the elastic limiting ring 320 tends to rotate relative to the bucket tooth body 200, the first step 324 abuts against the second step 211, so that the axial rotation or shaking of the elastic limiting ring can be prevented.

The specific implementation and principle are as follows:

the elastic limit ring 320 is embedded into the bucket tooth main body 200, the bolt 310 and the protrusion 311 penetrate through the tooth holder 100, the bucket tooth main body 200 and the elastic limit ring 320, the protrusion 311 is firstly located at the position of the convex hole 322 after being inserted, then the bolt 310 is rotated to drive the protrusion 311 to rotate to the locking groove 323 through the elastic part 325, the locking groove 323 locks the protrusion 311, further the axial rotation and the radial movement of the bolt 310 are locked, and finally the bucket tooth main body 200 and the tooth holder 100 are locked.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides an excavator bucket tooth, includes bucket tooth main part, toothholder and is used for connecting the locking mechanical system of bucket tooth main part and toothholder, the head of bucket tooth main part inserts in the toothholder, wears to be equipped with the toothholder through-hole that allows locking mechanical system to pass through at the toothholder head, wears to be equipped with the bucket tooth through-hole that allows locking mechanical system to pass through in the bucket tooth main part, its characterized in that:

2. The excavator tooth as claimed in claim 1, wherein the depth of the locking groove gradually increases along the direction from the convex hole to the locking groove when viewed from the center of the elastic limiting ring to the outer circumference.

3. The excavator tooth of claim 1, wherein an elastic portion is provided on the elastic limit ring at a position between the locking groove and the lug hole.

4. The excavator tooth of claim 3, wherein the wall thickness of the resilient portion is less than the wall thickness of the resilient collar elsewhere.

5. The excavator tooth as claimed in claim 1, wherein the resilient retainer ring is provided with a first step and the tooth body is provided with a second step; the first step and the second step are matched to lock the axial rotation of the elastic limiting ring.