REPLACEMENT AND URGING DEVICE FOR THE BUCKET TEETH OF AN ENGINEERING CONSTRUCTION MACHINE
A replacement and urging device for the bucket teeth of an engineering construction machine is disclosed. An adaptor is mounted with a bucket tooth. A first through hole holes horizontally through the adaptor. Both sides of the bucket tooth are formed with a second through hole, respectively. An engaging unit is interposed between the first through hole and the second through hole to slide between them. This enables the bucket tooth to be mounted and positioned on the adaptor. The invention thus prevents the bucket tooth from constantly hitting the adaptor.
1. Field of Invention
The invention relates to a replacement and urging device for the bucket teeth of an engineering construction machine and, in particular, to a replacement and urging device for the bucket teeth of an engineering construction machine that fixes the bucket teeth on the adaptor of a bucket to prevent the bucket teeth, from hitting the adaptor repeatedly.
2. Related Art
The above-mentioned conventional excavator bucket tooth structure has the following problems:
1. As seen in
2. When the bucket performs a digging process, objects inevitably get into the gap between the pin 92 and the first through hole 901 and the second through holes 911. If the object is a pebble or metal block, it may lock the pin 92 in the through holes 901, 911. If the object is mud, then it may clog the pin 92 in the through holes 901, 911. Therefore, when taking die pin 92 off of the through holes 901, 911, one has to remove those objects first. In the worst case, one has to destroy the bucket teeth 9 (e.g., cutting the bucket teeth 9 using a hydrogen flare).
3.
4. Please refer to
However, if there is a gap between the adaptor 90 and the bucket teeth 91, it provides a buffer space for the bucket teeth 91 to hit back the adaptor 90, which is likely to deform the colliding parts of them. Besides, the hitting strength is larger for a larger gap, causing more damages to the adaptor 90 and the bucket teeth 91. Moreover, the second through holes 911 of the bucket teeth 91 erode with the pin 92 to become larger. As shown in
To replace the bucket tooth structure of a conventional excavator, one requires about 10 minutes or even half an hour to simply take off the pin 92. The replacement process for the conventional bucket teeth 9 is very inconvenient. Moreover, the conventional bucket teeth 9 are likely to break due to collisions during a digging process, it is therefore the objective of the invention to solve the above-mentioned problems.
SUMMARY OF THE INVENTIONAn objective of the invention is to solve the above-mentioned problems by providing a replacement and urging device whose bucket teeth can be quickly removed and assembled. It is convenient to replace the bucket teeth on the bucket.
Another objective of the invention is to prevent the adaptor and bucket teeth from developing a shifting gap during uses. This prevents the pins from being hit by the bucket teeth and breaking.
To achieve the above-mentioned objectives, the invention includes:
a adaptor, which has a fixing part fixed on a bucket, an inserting part protruding from the end of the fixing part that is far from the bucket, a first through hole being formed between its two sides and horizontally through the fixing part, a limiting part being disposed at the center of the first through hole;
a bucket teeth, which has a slot corresponding to the inserting part on its one end, and has a second through hole of both sides, respectively, each of the second through holes being disposed opposite to each other and in communications with the slot, the bucket teeth being mounted on the inserting part of the adaptor by the slot:
an engaging unit, which is disposed between the first through hole of the adaptor and the second through holes of the bucket teeth and slides between them for the bucket teeth to be mounted and positioned on the adaptor.
The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein:
FIG. 9 shows the initial positioning of the disclosed bucket tooth;
The present invention will be apparent from the following detailed description, which, proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
Please refer to
The adaptor 1 has a fixing part 11. As shown in
An inserting part 12 protrudes from one end of the fixing pan 11 that is far from the bucket 2. A first through hole 121 is formed between its two sides, horizontally through the fixing part 11. A limiting part 122 is provided at the center of the first through hole 121.
One end of the bucket teeth 5 has a slot 51 corresponding to the inserting part 12. Both sides of the bucket teeth 5 have a second, through hole 52, respectively. The second through holes 52 are disposed opposite to each other and in communications with the slot 51. The bucket teeth 5 is mounted on the inserting part 12 of the adaptor 1 by the slot 51.
The engaging unit 7 is disposed between the first through hole 121 of the adaptor 1 and the second through holes 52 of the bucket teeth 5 and can slide between them, it allows the bucket teeth 5 to mount and position on the bucket teeth 1. In this embodiment, the engaging unit 7 includes two stopping posts 3 and an elastic element 4.
The stopping posts 3 are inserted into both ends of the first through hole 121 of the inserting part 12, respectively. One end of each of the stopping posts 3 protrudes from the first through hole 121 and correspondingly into the second through hole 52. In this embodiment, the diameter of the second through holes 52 is smaller than the outer diameter of the stopping posts 3. The two opposite sidewalls of the bucket teeth 5 inside the slot 51 have a notch 53 in communications with the second through holes 52, respectively. The diameter difference between the second through holes 52 and the notch 53 forms a stopping wail 54. Each of the stopping walls 54 stops the corresponding stopping post 3 inside the corresponding notch 53. This prevents the stopping posts from escaping the corresponding second through holes 52.
Each of the stopping posts 3 has a groove 32 on one end of inside the first through hole 121. The grooves 32 are disposed facing each other. An elastic element 4 is interposed between the two grooves 32. Both ends of the elastic element 4 are inside the corresponding grooves 32 to urge against the stopping posts 3. The elastic element 4 in tins embodiment is an urging spring.
Besides, when each of the stopping posts 3 retracts into the first through hole 121, the limiting part 122 inside the first through hole stops so that the two stopping posts slide the same distance therein. The purpose of this is to average the urging force of the elastic element 4 on the two stopping posts 30. Moreover, each of the stopping posts 3 is mounted with at least one stopping ring 31 to prevent alien objects from entering the grooves 32 of the stopping ports 3 via the gap between the stopping posts 3 and the inserting part 12.
As described above, during a digging process, the pebbles or metal objects may fall into the gap between the stopping posts 3 and the second through holes 52 of the bucket teeth 5. Therefore, the current embodiment uses the two stopping rings 31 mounted around the stopping posts 3 to stop the alien objects. So no pebbles or metal objects fall into the second through holes 52 of the bucket teeth 5 and the stopping posts 3. The invention thus prevents the stopping posts 3 from locking or jamming the first through holes 121.
When the disclosed adaptor 1 and the bucket teeth 5 are assembled, as shown in
From the above description, it is easy to see that the invention has the following advantages:
1. When the bucket teeth 5 is to be assembled onto the adaptor 1, one only needs to use a holding tool 6 to press the two stopping posts 3 into the first through hole 121. Afterwards, the bucket teeth 5 is mounted, on the adaptor 1 so that the two stopping posts 3 protrude from the second through holes 52. This completes the assembly. Therefore, even if the spacing between adjacent two bucket teeth is very limited, it still does not affect the assembly. The user does sot need to hit with much efforts. Therefore, it is timesaving and convenient.
2. Since each of the stopping posts 3 is mounted with a stopping ring 31, alien objects can be blocked so that no pebbles or metal objects will fail between, the stopping posts 3 and the second through holes 52 of the bucket teeth 5. This ensures that the two stopping posts 3 encounter no resistance while sliding.
3. To take the bucket teeth 5 off of the adaptor 1, one only need to press the two stopping posts 3 into the first through hole 21. Therefore, it is fairly easy to take off the bucket teeth 5 for replacement.
Of course, the invention has many other embodiments that differ from the current one only in minor bucket teeth. Please refer to
Please refer to
Please refer to
However, as shown in
Besides, there is a flexible space 8 between the side of the stopping post 3 other than the outer guiding angle 33 and the inner wall of the second, through hole 52 of the bucket teeth 5. The flexible space 8 prevents the bucket teeth 5 from directly hitting the stopping posts 3 during the digging process as the outer guiding angle 33 of the stopping posts 3 slide along the inner guiding angle 55 of the bucket teeth 5.
Therefore, when there are collisions between the adaptor 1 and the bucket teeth 5 during the digging process, the two stopping posts 3 push outwards. The inner guiding angle 33 attaches to the outer guiding angle 53 to stop the bucket teeth 5. Therefore, there is no sliding gap between the bucket teeth 5 and the adaptor 1. There is then no buffer space for the adaptor 1 and the bucket teeth 5 to hit against each other. This prevents them from damages due to collisions. Also, using the design of the flexible space 8 between the bucket teeth 5 and the stopping posts 3, the bucket teeth 5 does not hit the stopping posts 3 and break them. Therefore, the disclosed bucket teeth have a very sale structure.
Please refer to
Although, the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to people skilled in the art. Therefore, it is contemplated that the appended claims will cover all modifications that foil within the true scope of the invention.
Claims
1. A replacement and urging device for the bucket teeth of an engineering construction machine comprising:
- an adaptor, which has a fixing part fixed to a bucket and having an inserting part protruding from the end far from the bucket, has a first through hole formed between two sides of the adaptor and horizontally going through the fixing part, and the first through hole having a center, two opposing ends, and a limiting part at the center;
- a bucket tooth, which has a slot corresponding to the inserting part on its one end and has a second through hole on both sides thereof, each of the second through holes being disposed opposite to each other and in communications with the slot and the bucket tooth being mounted on the inserting part of the adaptor by its slot; and
- an engaging unit, which is interposed and slides between the first through hole of the adaptor and the second through holes of the bucket tooth so that the bucket tooth is mounted and positioned on the adaptor.
2. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 1, wherein the engaging unit includes two stopping posts and an elastic element; each stopping post having two ends; each stopping post is inserted into one end of the first through hole of the inserting part, one end of each stopping post protrudes from the first through hole into the corresponding second through hole; each stopping post has a groove on one end inside the first through hole; two grooves are formed opposite to each other; an elastic element with two ends is interposed between the two grooves with both ends thereof located inside the grooves to urge against the corresponding posts.
3. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 2, wherein the elastic element is an urging spring.
4. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 2, wherein the elastic element is urethane.
5. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 2, wherein each stopping post is mounted with at least one stopping ring around the stopping post so that no alien objects falls between the stopping posts and the inserting part and into the grooves of the stopping posts.
6. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 2, wherein the diameter of each of the second through holes is smaller than the outer diameter of the stopping posts; that the two opposite sidewalls inside the slot of the bucket teeth have a notch in communication with the second through holes; and that a stopping wall is formed between each of the second through holes and the corresponding notch by the diameter difference, the stopping walls stopping the stopping posts in the corresponding notches.
7. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 1, wherein the engaging unit consists of two stopping posts, each of which is a magnet and inserted into both ends of the first through hole of the inserting part, respectively; that each of the stopping posts protrudes from the first through hole into the corresponding second through hole; and that the ends of the two stopping posts facing each other inside the first through hole have the same polarity.
8. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 7, wherein each of the stopping posts is mounted with at least one stopping ring around it to prevent alien objects from falling into the stopping posts via the gap between the stopping posts and the inserting part.
9. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 7, wherein the diameter of each of the second through holes is smaller than the outer diameter of the stopping posts; the two opposite sidewalls inside the slot of the bucket teeth have notches in communications with the second through hole; a stopping wall is formed between the second through holes and the notches due to the diameter difference; each of the stopping posts adheres into the corresponding stopping wall and stops at the corresponding notch.
10. The replacement and urging device, for the bucket teeth of an engineering construction machine as in claim 1, wherein the engaging unit includes two stopping posts and an elastic element; each of the stopping posts is inserted into both ends of the first through hole of the inserting part, respectively; one end of the stopping posts protrudes from the first through hole into the corresponding second through hole; the bucket tooth has an inner guiding angle on the side that the second through holes face the slot; each of the stopping posts has an outer guiding angle on the end protruding from the first through hole and facing towards the fixing part; the outer guiding angle attaches onto the inner guiding angle of the second through holes of the bucket tooth; the depth of the outer guiding angle is smaller than the inner guiding angle; a flexible space is formed between the side of each of the stopping posts other than the outer guiding angle and the inner wall of the second through hole of the bucket tooth.
11. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 10, wherein the end of the stopping posts protruding from the first through hole has another outer guiding angle on the other side of the outer guiding angle.
12. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 10, wherein the elastic element is an urging spring.
13. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 10, wherein the elastic element is urethane.
14. The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 10, wherein each of the stopping posts is mounted with at least one stopping ring around it to prevent alien objects from falling into the grooves of the stopping posts via the gap between the stopping posts and the inserting part.
Type: Application
Filed: Apr 14, 2009
Publication Date: Oct 14, 2010
Inventor: Jung-Ching Ko (Taichung)
Application Number: 12/423,060
International Classification: E02F 9/28 (20060101);