EP2241683A1 - A tooth assembly for the bucket teeth of an engineering construction machine - Google Patents
A tooth assembly for the bucket teeth of an engineering construction machine Download PDFInfo
- Publication number
- EP2241683A1 EP2241683A1 EP09005321A EP09005321A EP2241683A1 EP 2241683 A1 EP2241683 A1 EP 2241683A1 EP 09005321 A EP09005321 A EP 09005321A EP 09005321 A EP09005321 A EP 09005321A EP 2241683 A1 EP2241683 A1 EP 2241683A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bucket teeth
- stopping
- hole
- posts
- bucket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
- E02F9/2816—Mountings therefor
- E02F9/2833—Retaining means, e.g. pins
- E02F9/2841—Retaining means, e.g. pins resilient
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
- E02F9/2816—Mountings therefor
- E02F9/2825—Mountings therefor using adapters
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2891—Tools for assembling or disassembling
Definitions
- 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.
- FIG. 14 shows a conventional excavator bucket tooth structure.
- a bucket is formed with several equally spaced bucket teeth 9.
- Each of the bucket teeth 9 includes a adaptor 90 and a bucket teeth 91.
- the adaptor 90 has a horizontal first through hole 901.
- the bucket teeth 91 is mounted on the adaptor 90.
- Both sides of the bucket teeth have respectively a second through hole 911 corresponding to the first through hole 901 of the adaptor 90.
- a hammer 93 hits a pin 92 from the second through hole 911 on one side of the bucket teeth 91 into the first through hole 901.
- a C-shaped buckle 902 positions the pin 92 in the first through hole 901. Both ends of the pin 92 protrude from the second through holes 911, restricting and positioning the bucket teeth 91 on the adaptor 90.
- the spacing between the bucket teeth 9 of the bucket is limited.
- the pin 92 When the pin 92 is hit into the predetermined position of the first through hole 901, there is no sufficient hitting distance and appropriate hitting angle. Therefore, the hammer has to be disposed inside a tiny space for hitting. Only after the pin 92 penetrates via the second through hole 911 into an appropriate depth of the first through hole 901 can the user hold the hammer 93 at an angle and further hit the pin 92 with the help of an auxiliary hitting rod.
- the pin 92 is then completely disposed and positioned between the first through hole 901 and the second through holes 911 of the adaptor 90 and the bucket teeth 91. In this case, the local structure of the pin 92 may be deformed or the entire structure is curved because of the hitting. This causes troubles in replacing the bucket teeth 9 in the future.
- FIG. 17 is a schematic view of taking off the pin 92.
- a tube 95 goes through the first through hole 901 of the adaptor 90 on the outermost side.
- One end of the tube 95 urges against the pin 92 to be taken off.
- the user then uses a hammer 93 to hit so that the pin 92 escapes from the C-shaped buckle 902, departing from the first through hole 901 and the second through holes 911.
- the reason for doing this is because the space between the bucket teeth 9 is limited.
- the hitting strength of the hammer 93 has to be such that the pin 92 escapes from the C-shaped buckle 902. This causes inconvenience in replacements.
- the pin 92 is locked or clogged by objects inside the through holes 901, 911 and the C-shaped buckle 902, it becomes even more difficult.
- FIGS. 18 and 19 Please refer to FIGS. 18 and 19 .
- the adaptor 90 and the bucket teeth 91 are assembled, there is still a gap A between them.
- the adaptor 90 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 FIG. 20 , when the second through holes 911 of the bucket teeth 91 become larger and the gap A is larger than the gap B because of the constant collisions between the adaptor 90 and the bucket teeth 91, the bucket teeth 91 urges against the pin 92, but not the adaptor 90, during a digging process.
- the pin 92 is constantly hit by the bucket teeth 91 during the digging process.
- the pin 92 thus often breaks so that the bucket teeth 91 falls off.
- the bucket teeth 91 may even hurt somebody if it falls from a high place.
- An 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.
- 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.
- FIG. 1 is a three-dimensional schematic view of the disclosed bucket teeth
- FIG. 2 is an exploded view of the disclosed bucket tooth
- FIG. 3 is a cross-sectional view showing how the disclosed bucket tooth is taken off
- FIG. 4 is a schematic view showing the assembly of the disclosed bucket tooth
- FIG. 5 is a schematic view showing the assembled bucket tooth
- FIG. 6 is a cross-sectional view of the second embodiment of the invention.
- FIG. 7 is a cross-sectional view of the third embodiment of the invention.
- FIG. 8 is a three-dimensional exploded view of the fourth embodiment of the invention.
- FIG. 9 shows the initial positioning of the disclosed bucket tooth
- FIG. 10 illustrates the collision of the disclosed bucket tooth during a digging process
- FIG. 11 is a schematic view of adjusting the stopping posts
- FIG. 12 is a schematic view of positioning the disclosed bucket tooth after the adjustment
- FIG. 13 is a cross-sectional view of the fifth embodiment of the invention.
- FIG. 14 is a three-dimensional exploded view of a conventional bucket tooth
- FIG. 15 is a top view of positioning a pin in the conventional bucket tooth
- FIG. 16 is a side view of positioning a pin in the conventional bucket tooth
- FIG. 17 is a top view of taking off a pin from the conventional bucket tooth
- FIG. 18 is a cross-sectional side view of the conventional bucket tooth
- FIG. 19 is a schematic view showing the gap between the adaptor and the bucket teeth of the conventional bucket tooth.
- FIG. 20 shows that a pin in the conventional bucket tooth breaks due to collisions.
- FIGS. 1 to 5 Please refer to FIGS. 1 to 5 for a first embodiment of the invention.
- This embodiment provides a replacement and urging device for the bucket teeth of an engineering construction machine. It includes: a adaptor 1, a bucket teeth 5, and an engaging unit 7.
- the adaptor 1 has a fixing part 11. As shown in FIGS. 1 and 2 , the adaptor 1 uses its fixing part 11 to hold onto the front edge of a bucket 2. The fixing part 11 is further soldered onto the bucket 2.
- An inserting part 12 protrudes from one end of the fixing part 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.
- 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.
- 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 wall 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 this embodiment is an urging spring.
- 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 3.
- 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.
- 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.
- a holding tool 6 (a C-shaped clamp in the drawings) can be used to press the two stopping posts 3 into the first through hole 121 of the inserting part 12 of the adaptor 1.
- the slot 51 of the bucket teeth 5 is mounted on the inserting part 12.
- the part of the stopping posts 3 next to the inner edge of the slot 51 of the bucket teeth 5 first urges against the inner front edge of the slot 51 of the bucket teeth 5.
- the slot 51 of the bucket teeth 5 is directly mounted onto the inserting part 12 of the adaptor 1.
- the two stopping posts 3 correspond to the stopping walls 54 of the second through holes 52 on both sides of the bucket teeth 5.
- the elastic urging force of the elastic element 4 pushes and goes into the stopping walls 54 of the corresponding second through holes 52, thereby positioning the bucket teeth 5 on the adaptor 1.
- 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 fall 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.
- the invention has many other embodiments that differ from the current one only in minor bucket teeth. Please refer to FIG. 6 for a second embodiment of the invention.
- the elastic element 4A is urethane that also achieves the same urging effect as in the first embodiment.
- the engaging unit 7 consists of two stopping posts 3A, each of which is a magnet.
- the facing ends of the two stopping posts 3A in the first through hole 121 are of the same polarity.
- the elastic element 4 in the first embodiment is replaced by the magnetic property of the stopping posts 3. Since the stopping posts 3A are made of a metal, they can become magnets through magnetization. As shown in FIG. 7 , the end of each of the stopping posts 3A inside the first through hole 121 is the S pole. After the two stopping posts 3A retract into the first through hole 121, they can automatically spring out due to the repulsive force between them. They can also adhere onto the stopping walls 54 and stop at the grooves 53. So they stop between the first through hole 121 of the adaptor 1 and the second through holes 52 of the bucket teeth 5. Therefore, they still achieve the same urging and positioning effects as the elastic element 4 and the stopping posts 3 in the first embodiment.
- the bucket teeth 5 has an inner guiding angle 55 on the side that the second through holes 52 open towards the slot 51.
- the end of each of the stopping posts 3 protruding from the first through hole 121 has an outer guiding angle 33 towards the fixing part 11.
- the outer guiding angle 33 attaches the bucket teeth 5 to the inner guiding angle 55 of the second through hole 52.
- the depth of the outer guiding angle 33 is smaller than the inner guiding angle 55. This keeps a gap so that the adaptor 1 and the bucket teeth 5 do not have collisions.
- FIG. 9 shows that the outer guiding angle 33 of the two stopping posts 33 initially urges against the inner guiding angle 55 of the bucket teeth 5 when the bucket teeth 5 is mounted on the adaptor 1. As shown in the drawing, the adaptor 1 and the bucket teeth 5 are urged by the two stopping posts 3. Therefore, there is no sliding gap.
- 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.
- the bucket teeth 5 does not hit the stopping posts 3 and break them. Therefore, the disclosed bucket teeth have a very safe structure.
- Each of the stopping posts 4 protrudes from one end of the first through hole 121.
- the other side of the outer guiding angle 33 has another corresponding outer guiding angle 33.
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- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
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- Component Parts Of Construction Machinery (AREA)
Abstract
A replacement and urging device for the bucket teeth of an engineering construction machine is disclosed. An adaptor (1) is mounted with a bucket tooth (5). A first through hole (121) goes horizontally through the adaptor (1). Both sides of the bucket tooth (5) are formed with a second through hole (52), respectively. An engaging unit (7) is interposed between the first through hole (121) and the second through holes (52) to slide between them. This enables the bucket teeth (5) to be mounted and positioned on the adaptor (1). The invention thus prevents the bucket tooth (5) from constantly hitting the adaptor (1).
Description
- 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.
-
FIG. 14 shows a conventional excavator bucket tooth structure. A bucket is formed with several equally spacedbucket teeth 9. Each of thebucket teeth 9 includes aadaptor 90 and abucket teeth 91. Theadaptor 90 has a horizontal first throughhole 901. Thebucket teeth 91 is mounted on theadaptor 90. Both sides of the bucket teeth have respectively a second throughhole 911 corresponding to the first throughhole 901 of theadaptor 90. Ahammer 93 hits apin 92 from the second throughhole 911 on one side of thebucket teeth 91 into the first throughhole 901. A C-shaped buckle 902 positions thepin 92 in the first throughhole 901. Both ends of thepin 92 protrude from the second throughholes 911, restricting and positioning thebucket teeth 91 on theadaptor 90. - The above-mentioned conventional excavator bucket tooth structure has the following problems:
- 1. As seen in
FIGS. 15 and16 , the spacing between thebucket teeth 9 of the bucket is limited. When thepin 92 is hit into the predetermined position of the first throughhole 901, there is no sufficient hitting distance and appropriate hitting angle. Therefore, the hammer has to be disposed inside a tiny space for hitting. Only after thepin 92 penetrates via the second throughhole 911 into an appropriate depth of the first throughhole 901 can the user hold thehammer 93 at an angle and further hit thepin 92 with the help of an auxiliary hitting rod. Thepin 92 is then completely disposed and positioned between the first throughhole 901 and the second throughholes 911 of theadaptor 90 and thebucket teeth 91. In this case, the local structure of thepin 92 may be deformed or the entire structure is curved because of the hitting. This causes troubles in replacing thebucket teeth 9 in the future. - 2. When the bucket performs a digging process, objects inevitably get into the gap between the
pin 92 and the first throughhole 901 and the second throughholes 911. If the object is a pebble or metal block, it may lock thepin 92 in the throughholes pin 92 in the throughholes pin 92 off of the throughholes bucket teeth 9 using a hydrogen flare). - 3.
FIG. 17 is a schematic view of taking off thepin 92. Atube 95 goes through the first throughhole 901 of theadaptor 90 on the outermost side. One end of thetube 95 urges against thepin 92 to be taken off. The user then uses ahammer 93 to hit so that thepin 92 escapes from the C-shaped buckle 902, departing from the first throughhole 901 and the second throughholes 911. The reason for doing this is because the space between thebucket teeth 9 is limited. The hitting strength of thehammer 93 has to be such that thepin 92 escapes from the C-shaped buckle 902. This causes inconvenience in replacements. Moreover, when thepin 92 is locked or clogged by objects inside the throughholes shaped buckle 902, it becomes even more difficult. - 4. Please refer to
FIGS. 18 and 19 . After theadaptor 90 and thebucket teeth 91 are assembled, there is still a gap A between them. There is also a gap between the second throughholes 911 and thepin 92. Therefore, when thebucket teeth 91 urges against theadaptor 90 during a digging process, the two ends of thepin 92 protruding from the first throughhole 901 are not directly hit by thebucket teeth 91 because the gap B is larger than the gap A. - However, if there is a gap between the
adaptor 90 and thebucket teeth 91, it provides a buffer space for thebucket teeth 91 to hit back theadaptor 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 theadaptor 90 and thebucket teeth 91. Moreover, the second throughholes 911 of thebucket teeth 91 erode with thepin 92 to become larger. As shown inFIG. 20 , when the second throughholes 911 of thebucket teeth 91 become larger and the gap A is larger than the gap B because of the constant collisions between theadaptor 90 and thebucket teeth 91, thebucket teeth 91 urges against thepin 92, but not theadaptor 90, during a digging process. Therefore, thepin 92 is constantly hit by thebucket teeth 91 during the digging process. Thepin 92 thus often breaks so that thebucket teeth 91 falls off. In addition to causing troubles in digging, thebucket teeth 91 may even hurt somebody if it falls from a high place. - 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 theconventional bucket teeth 9 is very inconvenient. Moreover, theconventional 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. - An 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. 1 is a three-dimensional schematic view of the disclosed bucket teeth; -
FIG. 2 is an exploded view of the disclosed bucket tooth; -
FIG. 3 is a cross-sectional view showing how the disclosed bucket tooth is taken off; -
FIG. 4 is a schematic view showing the assembly of the disclosed bucket tooth; -
FIG. 5 is a schematic view showing the assembled bucket tooth; -
FIG. 6 is a cross-sectional view of the second embodiment of the invention; -
FIG. 7 is a cross-sectional view of the third embodiment of the invention; -
FIG. 8 is a three-dimensional exploded view of the fourth embodiment of the invention; -
FIG. 9 shows the initial positioning of the disclosed bucket tooth; -
FIG. 10 illustrates the collision of the disclosed bucket tooth during a digging process; -
FIG. 11 is a schematic view of adjusting the stopping posts; -
FIG. 12 is a schematic view of positioning the disclosed bucket tooth after the adjustment; -
FIG. 13 is a cross-sectional view of the fifth embodiment of the invention; -
FIG. 14 is a three-dimensional exploded view of a conventional bucket tooth; -
FIG. 15 is a top view of positioning a pin in the conventional bucket tooth; -
FIG. 16 is a side view of positioning a pin in the conventional bucket tooth; -
FIG. 17 is a top view of taking off a pin from the conventional bucket tooth; -
FIG. 18 is a cross-sectional side view of the conventional bucket tooth; -
FIG. 19 is a schematic view showing the gap between the adaptor and the bucket teeth of the conventional bucket tooth; and -
FIG. 20 shows that a pin in the conventional bucket tooth breaks due to collisions. - 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
FIGS. 1 to 5 for a first embodiment of the invention. This embodiment provides a replacement and urging device for the bucket teeth of an engineering construction machine. It includes: aadaptor 1, abucket teeth 5, and an engagingunit 7. - The
adaptor 1 has a fixingpart 11. As shown inFIGS. 1 and2 , theadaptor 1 uses its fixingpart 11 to hold onto the front edge of abucket 2. The fixingpart 11 is further soldered onto thebucket 2. - An inserting
part 12 protrudes from one end of the fixingpart 11 that is far from thebucket 2. A first throughhole 121 is formed between its two sides, horizontally through the fixingpart 11. A limitingpart 122 is provided at the center of the first throughhole 121. - One end of the
bucket teeth 5 has aslot 51 corresponding to the insertingpart 12. Both sides of thebucket teeth 5 have a second throughhole 52, respectively. The second throughholes 52 are disposed opposite to each other and in communications with theslot 51. Thebucket teeth 5 is mounted on the insertingpart 12 of theadaptor 1 by theslot 51. - The engaging
unit 7 is disposed between the first throughhole 121 of theadaptor 1 and the second throughholes 52 of thebucket teeth 5 and can slide between them. It allows thebucket teeth 5 to mount and position on thebucket teeth 1. In this embodiment, the engagingunit 7 includes two stoppingposts 3 and anelastic element 4. - The stopping
posts 3 are inserted into both ends of the first throughhole 121 of the insertingpart 12, respectively. One end of each of the stoppingposts 3 protrudes from the first throughhole 121 and correspondingly into the second throughhole 52. In this embodiment, the diameter of the second throughholes 52 is smaller than the outer diameter of the stopping posts 3. The two opposite sidewalls of thebucket teeth 5 inside theslot 51 have anotch 53 in communications with the second throughholes 52, respectively. The diameter difference between the second throughholes 52 and thenotch 53 forms a stoppingwall 54. Each of the stoppingwalls 54 stops the corresponding stoppingpost 3 inside the correspondingnotch 53. This prevents the stopping posts from escaping the corresponding second through holes 52. - Each of the stopping
posts 3 has agroove 32 on one end of inside the first throughhole 121. Thegrooves 32 are disposed facing each other. Anelastic element 4 is interposed between the twogrooves 32. Both ends of theelastic element 4 are inside the correspondinggrooves 32 to urge against the stopping posts 3. Theelastic element 4 in this embodiment is an urging spring. - Besides, when each of the stopping
posts 3 retracts into the first throughhole 121, the limitingpart 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 theelastic element 4 on the two stoppingposts 3. Moreover, each of the stoppingposts 3 is mounted with at least one stoppingring 31 to prevent alien objects from entering thegrooves 32 of the stoppingports 3 via the gap between the stoppingposts 3 and the insertingpart 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 throughholes 52 of thebucket teeth 5. Therefore, the current embodiment uses the two stoppingrings 31 mounted around the stoppingposts 3 to stop the alien objects. So no pebbles or metal objects fall into the second throughholes 52 of thebucket teeth 5 and the stopping posts 3. The invention thus prevents the stoppingposts 3 from locking or jamming the first throughholes 121. - When the disclosed
adaptor 1 and thebucket teeth 5 are assembled, as shown inFIG. 4 to FIG. 5 , a holding tool 6 (a C-shaped clamp in the drawings) can be used to press the two stoppingposts 3 into the first throughhole 121 of the insertingpart 12 of theadaptor 1. Theslot 51 of thebucket teeth 5 is mounted on the insertingpart 12. The part of the stoppingposts 3 next to the inner edge of theslot 51 of thebucket teeth 5 first urges against the inner front edge of theslot 51 of thebucket teeth 5. After releasing the holdingtool 6, theslot 51 of thebucket teeth 5 is directly mounted onto the insertingpart 12 of theadaptor 1. In this case, the two stoppingposts 3 correspond to the stoppingwalls 54 of the second throughholes 52 on both sides of thebucket teeth 5. The elastic urging force of theelastic element 4 pushes and goes into the stoppingwalls 54 of the corresponding second throughholes 52, thereby positioning thebucket teeth 5 on theadaptor 1. On the other hand, to take off thebucket teeth 5 from theadaptor 1, one uses theholding tool 6 to first press the two stoppingposts 3 into the first throughholes 121 of the inserting part via the second through holes 52. Afterwards, the two stoppingposts 3 inside theslot 51 urge against the inner edge of theslot 51 of thebucket teeth 5. After releasing the holdingtool 6, one can readily remove thebucket teeth 5 from theadaptor 1. - 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 theadaptor 1, one only needs to use aholding tool 6 to press the two stoppingposts 3 into the first throughhole 121. Afterwards, thebucket teeth 5 is mounted on theadaptor 1 so that the two stoppingposts 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 not need to hit with much efforts. Therefore, it is timesaving and convenient. - 2. Since each of the stopping
posts 3 is mounted with a stoppingring 31, alien objects can be blocked so that no pebbles or metal objects will fall between the stoppingposts 3 and the second throughholes 52 of thebucket teeth 5. This ensures that the two stoppingposts 3 encounter no resistance while sliding. - 3. To take the
bucket teeth 5 off of theadaptor 1, one only need to press the two stoppingposts 3 into the first through hole 21. Therefore, it is fairly easy to take off thebucket 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
FIG. 6 for a second embodiment of the invention. In this embodiment, theelastic element 4A is urethane that also achieves the same urging effect as in the first embodiment. - Please refer to
FIG. 7 for a third embodiment of the invention. The engagingunit 7 consists of two stoppingposts 3A, each of which is a magnet. The facing ends of the two stoppingposts 3A in the first throughhole 121 are of the same polarity. In this embodiment, theelastic element 4 in the first embodiment is replaced by the magnetic property of the stopping posts 3. Since the stoppingposts 3A are made of a metal, they can become magnets through magnetization. As shown inFIG. 7 , the end of each of the stoppingposts 3A inside the first throughhole 121 is the S pole. After the two stoppingposts 3A retract into the first throughhole 121, they can automatically spring out due to the repulsive force between them. They can also adhere onto the stoppingwalls 54 and stop at thegrooves 53. So they stop between the first throughhole 121 of theadaptor 1 and the second throughholes 52 of thebucket teeth 5. Therefore, they still achieve the same urging and positioning effects as theelastic element 4 and the stoppingposts 3 in the first embodiment. - Please refer to
FIG. 8 for a fourth embodiment of the invention. Thebucket teeth 5 has aninner guiding angle 55 on the side that the second throughholes 52 open towards theslot 51. The end of each of the stoppingposts 3 protruding from the first throughhole 121 has anouter guiding angle 33 towards the fixingpart 11. Theouter guiding angle 33 attaches thebucket teeth 5 to theinner guiding angle 55 of the second throughhole 52. The depth of the outer guidingangle 33 is smaller than theinner guiding angle 55. This keeps a gap so that theadaptor 1 and thebucket teeth 5 do not have collisions. -
FIG. 9 shows that the outer guidingangle 33 of the two stoppingposts 33 initially urges against theinner guiding angle 55 of thebucket teeth 5 when thebucket teeth 5 is mounted on theadaptor 1. As shown in the drawing, theadaptor 1 and thebucket teeth 5 are urged by the two stoppingposts 3. Therefore, there is no sliding gap. - However, as shown in
FIGS. 10 to 12 , when thebucket teeth 5 has collisions during a digging process, it retreats towards the adaptor 1 (FIG. 10 ). In this case, the two stoppingposts 3 extend outwards under the push of the elastic element 4 (FIG. 11 ). Thebucket teeth 5 uses itsinner guiding angle 55 to urge against the outer guidingangle 33 of the stopping posts 3. Thebucket teeth 5 is blocked so that there is still no sliding gap between theadaptor 1 and thebucket teeth 5. - Besides, there is a
flexible space 8 between the side of the stoppingpost 3 other than the outer guidingangle 33 and the inner wall of the second throughhole 52 of thebucket teeth 5. Theflexible space 8 prevents thebucket teeth 5 from directly hitting the stoppingposts 3 during the digging process as the outer guidingangle 33 of the stoppingposts 3 slide along theinner guiding angle 55 of thebucket teeth 5. - Therefore, when there are collisions between the
adaptor 1 and thebucket teeth 5 during the digging process, the two stoppingposts 3 push outwards. Theinner guiding angle 33 attaches to the outer guidingangle 53 to stop thebucket teeth 5. Therefore, there is no sliding gap between thebucket teeth 5 and theadaptor 1. There is then no buffer space for theadaptor 1 and thebucket teeth 5 to hit against each other. This prevents them from damages due to collisions. Also, using the design of theflexible space 8 between thebucket teeth 5 and the stoppingposts 3, thebucket teeth 5 does not hit the stoppingposts 3 and break them. Therefore, the disclosed bucket teeth have a very safe structure. - Please refer to
FIG. 13 for a fifth embodiment of the invention. Each of the stoppingposts 4 protrudes from one end of the first throughhole 121. The other side of the outer guidingangle 33 has another corresponding outer guidingangle 33. - 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 fall within the true scope of the invention.
Claims (14)
- A replacement and urging device for the bucket teeth of an engineering construction machine, characterized in having:a adaptor (1), which has a fixing part (11) fixed to a bucket (2) and having an inserting part (12) protruding from the end far from the bucket (2), has a first through hole (121) formed between its two sides and horizontally going through the fixing part (11), and has a limiting part (122) at the center of the first through hole (121);a bucket teeth (5), which has a slot (51) corresponding to the inserting part (12) on its one end and has a second through hole (52) on both sides thereof, each of the second through holes (52) being disposed opposite to each other and in communications with the slot (51) and the bucket teeth being mounted on the inserting part (12) of the adaptor 1 by its slot (51); andan engaging unit (7), which is interposed and slides between the first through hole (121) of the adaptor 1 and the second through holes (52) of the bucket teeth (5) so that the bucket teeth (5) is mounted and positioned on the adaptor (1).
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 1 characterized in that the engaging unit (7) includes two stopping posts (3) and an elastic element (4); that each of the stopping posts (3) are inserted into both ends of the first through hole (121) of the inserting part (12), respectively; that one end of the stopping posts (3) protrudes from the first through hole (121) into the corresponding second through hole (52); that each of the stopping posts (3) has a groove (32) on the end inside the first through hole (121); that each of the grooves (32) are formed opposite to each other; and that an elastic element (4) is interposed between the two grooves (32) with both ends thereof located inside the grooves (32) 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 characterized in that the elastic element (4) is an urging spring.
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 2 characterized in that the elastic element (4) is urethane.
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 2 characterized in that each of the stopping posts is mounted with at least one stopping ring (31) around it so that no alien objects fall via the gap between the stopping posts (3) and the inserting part (12) into the grooves (32) of the stopping posts (3).
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 2 characterized in that the diameter of each of the second through holes (52) is smaller than the outer diameter of the stopping posts (3); that the two opposite sidewalls inside the slot (51) of the bucket teeth (5) have a notch (53) in communications with the second through holes (52); and that a stopping wall (54) is formed between each of the second through holes (52) and the corresponding notch (53) by the diameter difference, the stopping walls (54) stopping the stopping posts (3) in the corresponding notches (53).
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 1 characterized in that the engaging unit (7) consists of two stopping posts (3), each of which is a magnet and inserted into both ends of the first through hole (121) of the inserting part (12), respectively; that each of the stopping posts (3) protrudes from the first through hole (121) into the corresponding second through hole (52); and that the ends of the two stopping posts (3) facing each other inside the first through hole (121) have the same polarity.
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 7 characterized in that each of the stopping posts (3) is mounted with at least one stopping ring (31) around it to prevent alien objects from falling into the stopping posts (3) via the gap between the stopping posts (3) and the inserting part (12).
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 7 characterized in that the diameter of each of the second through holes (52) is smaller than the outer diameter of the stopping posts (3); that the two opposite sidewalls inside the slot (51) of the bucket teeth (5) have notches (53) in communications with the second through hole (52); that a stopping wall (54) is formed between the second through holes (52) and the notches (53) due to the diameter difference; and that each of the stopping posts (3) adheres into the corresponding stopping wall (54) and stops at the corresponding notch (53).
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 1 characterized in that the engaging unit includes two stopping posts (3) and an elastic element (4); each of the stopping posts (3) is inserted into both ends of the first through hole (121) of the inserting part (12), respectively; that one end of the stopping posts (3) protrudes from the first through hole (121) into the corresponding second through hole (52); that the bucket teeth (5) has an inner guiding angle (55) on the side that the second through holes (52) face the slot (51); that each of the stopping posts (3) has an outer guiding angle (33) on the end protruding from the first through hole (121) and facing towards the fixing part (11); that the outer guiding angle (33) attaches onto the inner guiding angle (55) of the second through holes (52) of the bucket teeth (5); that the depth of the outer guiding angle (33) is smaller than the inner guiding angle (55); and that a flexible space (8) is formed between the side of each of the stopping posts (3) other than the outer guiding angle (33) and the inner wall of the second through hole (52) of the bucket teeth (5).
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 10 characterized in that the end of the stopping posts (3) protruding from the first through hole (121) has another outer guiding angle (33) on the other side of the outer guiding angle (33).
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 10 characterized in that the elastic element (4) is an urging spring.
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 10 characterized in that the elastic element (4) is urethane.
- The replacement and urging device for the bucket teeth of an engineering construction machine as in claim 10 characterized in that each of the stopping posts (3) is mounted with at least one stopping ring (31) around it to prevent alien objects from falling into the grooves (32) of the stopping posts (3) via the gap between the stopping posts (3) and the inserting part (12).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09005321A EP2241683A1 (en) | 2009-04-14 | 2009-04-14 | A tooth assembly for the bucket teeth of an engineering construction machine |
EP10158557A EP2248953A1 (en) | 2009-04-14 | 2009-04-14 | Replacement and urging device for the bucket teeth of an engineering construction machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09005321A EP2241683A1 (en) | 2009-04-14 | 2009-04-14 | A tooth assembly for the bucket teeth of an engineering construction machine |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10158557.8 Division-Into | 2010-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2241683A1 true EP2241683A1 (en) | 2010-10-20 |
Family
ID=40718558
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09005321A Withdrawn EP2241683A1 (en) | 2009-04-14 | 2009-04-14 | A tooth assembly for the bucket teeth of an engineering construction machine |
EP10158557A Withdrawn EP2248953A1 (en) | 2009-04-14 | 2009-04-14 | Replacement and urging device for the bucket teeth of an engineering construction machine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10158557A Withdrawn EP2248953A1 (en) | 2009-04-14 | 2009-04-14 | Replacement and urging device for the bucket teeth of an engineering construction machine |
Country Status (1)
Country | Link |
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EP (2) | EP2241683A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013059612A3 (en) * | 2011-10-20 | 2013-07-04 | Trinity Industries, Inc. | Tooth assembly for excavating apparatus with rare earth material |
WO2016089669A1 (en) * | 2014-12-03 | 2016-06-09 | Caterpillar Inc. | Ground engaging tool |
WO2016135360A1 (en) * | 2015-02-23 | 2016-09-01 | Metalogenia Research & Technologies S.L. | Device for attaching a wear or protection element to a shovel of a soil-shifting machine and corresponding attachment method and wear or protection system |
CN107002392A (en) * | 2014-12-03 | 2017-08-01 | 卡特彼勒公司 | Ground engagement instrument |
US9976287B2 (en) | 2014-12-03 | 2018-05-22 | Caterpillar Inc. | Ground engaging tool |
CN108915001A (en) * | 2018-07-09 | 2018-11-30 | 成都工合科技有限公司 | A kind of loading machine leading edge retaining mechanism and loading machine leading edge |
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US3325926A (en) * | 1964-03-09 | 1967-06-20 | Mid Continent Steel Casting Co | Digger tooth and assembly for an excavating apparatus |
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US20090044435A1 (en) * | 2007-08-14 | 2009-02-19 | Amsco Cast Products (Canada) Inc. | Retainer Pin and Tooth for Tooth and Adaptor Assembly |
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US2987838A (en) * | 1957-08-05 | 1961-06-13 | Elton Stratton | Excavating tooth |
US4087928A (en) * | 1977-04-07 | 1978-05-09 | International Harvester Company | Multi-sectional resilient retainer for excavating tooth |
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- 2009-04-14 EP EP09005321A patent/EP2241683A1/en not_active Withdrawn
- 2009-04-14 EP EP10158557A patent/EP2248953A1/en not_active Withdrawn
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US3325926A (en) * | 1964-03-09 | 1967-06-20 | Mid Continent Steel Casting Co | Digger tooth and assembly for an excavating apparatus |
US4848013A (en) * | 1988-10-24 | 1989-07-18 | Caterpillar Inc. | Two pin fastening assembly with interconnecting and retaining means |
US6439796B1 (en) * | 2000-08-02 | 2002-08-27 | Gh Hensley Industries, Inc. | Connector pin apparatus and associated methods |
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2615194C2 (en) * | 2011-10-20 | 2017-04-04 | Тринити Индастриз, Инк. | Prefabricated tooth for excavating device, containing components from rare-earth materials |
KR20140103917A (en) * | 2011-10-20 | 2014-08-27 | 트리티니인더스트리이즈인코포레이티드 | Tooth assembly for excavating apparatus with rare earth material |
WO2013059612A3 (en) * | 2011-10-20 | 2013-07-04 | Trinity Industries, Inc. | Tooth assembly for excavating apparatus with rare earth material |
KR101941601B1 (en) | 2011-10-20 | 2019-01-23 | 트리티니인더스트리이즈인코포레이티드 | Tooth assembly for excavating apparatus with rare earth material |
AU2012325934B2 (en) * | 2011-10-20 | 2016-02-04 | Arcosa, Inc. | Tooth assembly for excavating apparatus with rare earth material |
CN103890283B (en) * | 2011-10-20 | 2016-04-13 | 特里尼蒂工业有限公司 | For excavating equipment there is the tooth assembly of rare earth material |
US8938895B2 (en) | 2011-10-20 | 2015-01-27 | Trinity Industries, Inc. | Tooth assembly for excavating apparatus with rare earth material |
CN103890283A (en) * | 2011-10-20 | 2014-06-25 | 特里尼蒂工业有限公司 | Tooth assembly for excavating apparatus with rare earth material |
WO2016089669A1 (en) * | 2014-12-03 | 2016-06-09 | Caterpillar Inc. | Ground engaging tool |
US9976287B2 (en) | 2014-12-03 | 2018-05-22 | Caterpillar Inc. | Ground engaging tool |
RU2698928C2 (en) * | 2014-12-03 | 2019-09-02 | Кейтерпиллар Инк. | Excavation tool |
AU2015355305B2 (en) * | 2014-12-03 | 2020-10-29 | Caterpillar Inc. | Ground engaging tool |
CN107002392A (en) * | 2014-12-03 | 2017-08-01 | 卡特彼勒公司 | Ground engagement instrument |
WO2016135360A1 (en) * | 2015-02-23 | 2016-09-01 | Metalogenia Research & Technologies S.L. | Device for attaching a wear or protection element to a shovel of a soil-shifting machine and corresponding attachment method and wear or protection system |
RU2660825C1 (en) * | 2015-02-23 | 2018-07-10 | Металохения Рисерч Энд Текнолоджиз С.Л. | Wear or protective element to the earth-moving machine bucket fastening device, corresponding fastening method and the wear or protective system |
US10246856B2 (en) | 2015-02-23 | 2019-04-02 | Metalogenia Research & Technologies S.L. | Fixing device for fixing a wear or protection element on a bucket of an earth moving machine and corresponding fixing method and wear or protection system |
CN108915001B (en) * | 2018-07-09 | 2021-10-15 | 成都工合科技有限公司 | Loader front edge locking mechanism and loader front edge |
CN108915001A (en) * | 2018-07-09 | 2018-11-30 | 成都工合科技有限公司 | A kind of loading machine leading edge retaining mechanism and loading machine leading edge |
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