CN102733446A - Digging bucket and bucket teeth thereof - Google Patents
Digging bucket and bucket teeth thereof Download PDFInfo
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- CN102733446A CN102733446A CN2011100953969A CN201110095396A CN102733446A CN 102733446 A CN102733446 A CN 102733446A CN 2011100953969 A CN2011100953969 A CN 2011100953969A CN 201110095396 A CN201110095396 A CN 201110095396A CN 102733446 A CN102733446 A CN 102733446A
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Abstract
The invention provides a digging bucket and bucket teeth of the digging bucket. Each of the bucket teeth comprises a wedge-shaped bucket tooth body, an upper thick tooth surface and an upper thin tooth surface, wherein the upper thick tooth surface is positioned at the upper surface of the wedge-shaped bucket tooth body; and the upper thin tooth surface is of a curved surface formed by downward depressing the upper surface of the wedge-shaped bucket tooth body, and is positioned at two sides of the upper thick tooth surface, and the projection of the curved surface, in the vertical plane, is of the projection region of a surrounding area. The strength and wear resistance of the bucket teeth can be improved, and the service lives of the bucket teeth can be prolonged.
Description
Technical field
The present invention relates to engineering machinery, particularly relate to a kind of power shovel and bucket tooth thereof.
Background technology
Excavator is a kind of of engineering machinery, is widely used in engineering fields such as building, road, mine, and main effect is to carry out digging operation.Fig. 1 is the shape assumption diagram of existing excavator, and as shown in Figure 1, the working portion of excavator mainly comprises scraper bowl (bucket) 110, dipper (arm) 120 and swing arm (boom) 130.Wherein, scraper bowl 110 is the critical pieces that directly contact with the sandstone that is excavated.Fig. 2 is for the shape assumption diagram of existing scraper bowl, and like Fig. 1, shown in Figure 2, the body 111 of scraper bowl 110 forms bucket tooth 113 at the place, bottom of quarrel 112.Bucket tooth 113 is used to dig out hard ground or sandstone, cuts undergroundly, and therefore, bucket tooth 113 is general to adopt special wear-resisting material to process.
Fig. 3 a, 3b, 3c, 3d, 3e are respectively vertical view, front view, upward view, left view and the right view of prior art bucket tooth; As shown in the figure; Bucket tooth comprises: wedge shape bucket tooth body 300; Be positioned at the thick flank of tooth 310 of said wedge shape bucket tooth body 300 upper surfaces, cave in down, and be distributed in the thin flank of tooth 321,322 of the thick flank of tooth 310 both sides by said wedge-shaped body upper surface.Front view shown in Fig. 3 b, the thin projection of the flank of tooth in perpendicular is a curve.Upward view shown in Fig. 3 c, for economical with materials, the back side of wedge-shaped body 300 also is provided with groove 331,332.
It is thus clear that, existing excavator bucket teeth, the centre is thick tooth, and both sides are thin tooth, have just adopted thick middle, and the structure that both sides are thin can be worn and torn because of the thin tooth in both sides wears no resistance in the use at first, makes the crown outward appearance be most advanced and sophisticated and distributes, and then excavate effective.But, because the thin projection of the flank of tooth 321,322 in perpendicular is a curve.So between the thin tooth of depression and the thick flank wall is not level and smooth transition, but have handing-over line 311,312, varied in thickness is too big at handing-over line place, and the handing-over line just becomes the stress concentration line in mining process, easily fracture.
And because thin tooth itself is just thin, the back side of wedge shape bucket tooth body 300 also is provided with groove 331,332, so bucket tooth is whole thin; Intensity is little, easy fracture, and abrasion resistance is not good; Durability is relatively poor, is applicable to the earthwork that sandstone are less comparatively speaking, is not suitable for cubic meter of stone operation; And the replacement cycle is shorter, and use cost is higher, influences the operating efficiency of excavator.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of power shovel and bucket tooth thereof, can improve bucket tooth intensity and abrasion resistance, increases the bucket tooth life-span.
To achieve these goals, the invention provides a kind of bucket tooth of power shovel, comprising:
Wedge shape bucket tooth body;
The thick tooth surface in top is positioned at the upper surface of said wedge shape bucket tooth body;
Top approaches tooth surface, is the curved surface that the upper surface by said wedge-shaped body is recessed to form downwards, is positioned at the both sides of the thick tooth surface in said top, and the projection of said curved surface in perpendicular is the view field that is with area.
Preferably, in the above-mentioned bucket tooth, the both sides of said wedge shape bucket tooth body have thin increment face, and said thin increment face is wide trapezoidal in the left narrow right side.
Preferably, in the above-mentioned bucket tooth, the front end of said wedge shape bucket tooth body has end face, and the both sides of said front end have the chamfering inclined-plane.
Preferably, in the above-mentioned bucket tooth, projection line and angle horizon between of said chamfering inclined-plane in horizontal plane spent less than 45 greater than 10 degree.
Preferably, in the above-mentioned bucket tooth, have transition face between thick tooth surface in said top and the said end face, the angle of inclination of said transition face is greater than the angle of inclination of the thick tooth surface in said top.
Preferably, in the above-mentioned bucket tooth, also comprise:
The thick tooth surface in bottom is positioned at the soffit of said wedge shape bucket tooth body;
The bottom thin tooth surface is second curved surface that the soffit by said wedge-shaped body caves inward and forms, and is positioned at the both sides of the thick tooth surface in said bottom, and said second curved surface being projected as in perpendicular is with second view field of area.
Preferably, in the above-mentioned bucket tooth, the upper surface of said wedge shape bucket tooth body has center bar shaped face, and the left and right sides of said center bar shaped face tilts to the internal direction of said wedge shape bucket tooth body; The soffit of said wedge shape bucket tooth body has soffit center bar shaped face, and the left and right sides of said soffit center bar shaped face tilts to the internal direction of said wedge shape bucket tooth body.
The present invention also provides a kind of power shovel, comprises bucket tooth, and said bucket tooth comprises:
Wedge shape bucket tooth body;
The thick tooth surface in top is positioned at the upper surface of said wedge shape bucket tooth body;
Top approaches tooth surface, is the curved surface that the upper surface by said wedge-shaped body is recessed to form downwards, is positioned at the both sides of the thick tooth surface in said top, and the projection of said curved surface in perpendicular is the view field that is with area.
Preferably, in the above-mentioned power shovel, also comprise:
The thick tooth surface in bottom is positioned at the soffit of said wedge shape bucket tooth body;
The bottom thin tooth surface is second curved surface that the soffit by said wedge-shaped body caves inward and forms, and is positioned at the both sides of the thick tooth surface in said bottom, and said second curved surface being projected as in perpendicular is with second view field of area.
Preferably, in the above-mentioned power shovel, the front end of said wedge shape bucket tooth body has end face; The both sides of said front end have the chamfering inclined-plane, and projection line and angle horizon between of said chamfering inclined-plane in horizontal plane spent less than 45 greater than 10 degree; Have transition face between thick tooth surface in said top and the said end face, the angle of inclination of said transition face is greater than the angle of inclination of the thick tooth surface in said top; The both sides of said wedge shape bucket tooth body have thin increment face, and said thin increment face is wide trapezoidal in the left narrow right side.
There is following technique effect at least in the embodiment of the invention:
1) in the embodiment of the invention; Thin tooth surface 421,422 being projected as in perpendicular in top are with the view field of area; Therefore top approaches tooth surface the 421, the 422nd, three-dimension curved surface (being similar to the part that the face of cylinder adds the compound curved surface of sphere), so more even to the transition of thin tooth by thick tooth, thin tooth also is taper; Easy fracture not, the application life of having improved bucket tooth.And top approaches tooth surface 421,422, also is being skew surface by thick tooth to thin tooth direction, so unload the load of this direction easily, can throw the bigger excavation load of opposing, the application life of further having improved bucket tooth.
2) bucket tooth of the embodiment of the invention continues to continue to use thick middle; The design feature that both sides are thin; Under the situation that guarantees the good property excavated,, make the bucket tooth cross section be two triangle reinforcements (with reference to figure 4 and Fig. 5 d) through thin tooth surface 421,422 in top and bottom thin tooth surface 461,462 are set; Improve the intensity and the anti-fracture energy of bucket tooth, had better wear resistance.
3) both sides of said wedge shape bucket tooth body have thin increment face 481,482; Said thin increment face is wide trapezoidal in the left narrow right side, thereby thin tooth has been strengthened thin tooth intensity laterally also becoming trapezoidal by thick attenuation; And have good casting manufacturability, be not prone to casting flaws such as shrinkage cavity shrinkage porosity.
4) in the embodiment of the invention, the bucket tooth front end stays a transition face 440, has guaranteed the optimized cutting angle; Make contact area increase simultaneously, the anti-wear performance of bucket tooth strengthens, and is able to the application life of bucket tooth prolong; Reduce and change number of times, improved the practicality and the economy of product.
5) embodiment of the invention makes two jiaos of chamferings of bucket tooth front end through chamfering inclined-plane 431,432 is set, and removes to be prone to the mill position, reduces excavating resistance, reduces bucket tooth weight, improves stock utilization, reduces cost.
Description of drawings
Fig. 1 is the shape assumption diagram of the excavator of prior art;
Fig. 2 is the scraper bowl shape assumption diagram of prior art;
Fig. 3 a, 3b, 3c, 3d, 3e are respectively vertical view, front view, upward view, left view and the right view of prior art bucket tooth;
Fig. 4 is the stereogram of the bucket tooth of the embodiment of the invention;
Fig. 5 a, 5b, 5c, 5d, 5e are respectively vertical view, front view, upward view, left view and the right view of the bucket tooth of the embodiment of the invention.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, will combine accompanying drawing that specific embodiment is described in detail below.
Fig. 4 is the stereogram of the bucket tooth of the embodiment of the invention, and Fig. 5 a, 5b, 5c, 5d, 5e are respectively vertical view, front view, upward view, left view and the right view of the bucket tooth of the embodiment of the invention.Shown in Figure 5 with reference to figure 4, the bucket tooth of power shovel comprises:
Wedge shape bucket tooth body 400;
The thick tooth surface 410 in top is positioned at the upper surface of said wedge shape bucket tooth body 400;
Top approaches tooth surface 421,422, is the curved surface that the upper surface by said wedge-shaped body is recessed to form downwards, is positioned at the both sides of the thick tooth surface 410 in said top, and said curved surface being projected as in perpendicular is with the view field of area.
It is thus clear that; In the embodiment of the invention, thin tooth surface 421,422 being projected as in perpendicular in top are with the view field of area, so the thin tooth surface the 421, the 422nd in top, and (face of cylinder adds the part of the compound curved surface of sphere to three-dimension curved surface; So it is more even to the transition of thin tooth by thick tooth; Thin tooth also is taper, easy fracture not, the application life of having improved bucket tooth.
And top approaches tooth surface 421,422, also is being skew surface by thick tooth to thin tooth direction; So unload the load of this direction easily; And the thin flank of tooth 321,322 of prior art is being the plane by thick tooth to thin tooth direction, is not easy to unload the load of this direction, so the embodiment of the invention can be resisted bigger excavation load; Improve and be equipped in the operation effectiveness under the hard operating environments such as the cubic meter of stone and frozen soil, the application life of further having improved bucket tooth.
With reference to figure 4, Fig. 5 a, Fig. 5 b; The both sides of said wedge shape bucket tooth body have thin increment face 481,482; Said thin increment face is wide trapezoidal in the left narrow right side, and is trapezoidal thereby thin tooth also becomes at left and right directions, strengthened thin tooth intensity; And have good casting manufacturability, be not prone to casting flaws such as shrinkage cavity shrinkage porosity.
With reference to figure 4, Fig. 5 b, the front end of said wedge shape bucket tooth body 400 has end face 430.Therefore, the bucket tooth end face is an obtuse angle, is difficult for losing, and abrasion resistance is better, and the bucket tooth end face of prior art (like Fig. 3 b) is a sharp-pointed angle, loses easily.With reference to figure 4, Fig. 5 a, the both sides of said front end have chamfering inclined-plane 431,432, and projection line and angle horizon (just center bar shaped face 470 in Fig. 5 a) between of said chamfering inclined-plane in horizontal plane spent less than 45 greater than 10 degree.Therefore,, make two jiaos of chamferings of bucket tooth front end, remove and be prone to the mill position, reduce excavating resistance, make bucket tooth sharper, more be prone to break up hard ground when carrying out digging operation, reduce bucket tooth weight, improve stock utilization, reduce cost through chamfering inclined-plane 431,432 is set.
In the embodiment of the invention, have transition face 440 between thick tooth surface 410 in said top and the said end face 430, the angle of inclination of said transition face 440 is greater than the angle of inclination of the thick tooth surface 410 in said top.
With reference to the upward view of figure 5c, in the embodiment of the invention, bucket tooth also comprises:
The thick tooth surface 450 in bottom is positioned at the soffit of said wedge shape bucket tooth body 400;
Bottom thin tooth surface 461,462 is second curved surfaces that the soffit by said wedge-shaped body caves inward and forms, and is positioned at the both sides of the thick tooth surface 450 in said bottom, and said second curved surface being projected as in perpendicular is with second view field of area.
It is thus clear that the bucket tooth of the embodiment of the invention also adopts the structure of similar upper surface at soffit; The thick middle both sides are thin; And the shape of three-dimension curved surface (face of cylinder adds the compound curved surface of sphere) is adopted in the transition of the thin tooth of thick teeth directional, and therefore, the embodiment of the invention is when carrying out vertical digging operation; Good effect also can be obtained in the bucket tooth bottom that is pyramid-shaped, and also easy fracture not.And the bucket tooth bottom of prior art be the plane two grooves are only arranged, not only being unfavorable for digging the hole has also reduced intensity, easily fracture.And on the whole, (with reference to figure 4 and Fig. 5 d) embodiment of the invention has adopted the two triangle reinforcements in cross section, has improved the intensity and the anti-fracture energy of bucket tooth, has had better wear resistance.
Shown in figure 4, Fig. 5 a, in the embodiment of the invention, the upper surface of said wedge shape bucket tooth body 400 has center bar shaped face 470, and the left and right sides of said center bar shaped face tilts to the internal direction of said wedge shape bucket tooth body 400.Just upper surface adopts the gentle slope shape on similar roof, and with respect to planar shaped, pressure is excavated in unloading more easily, and convenient the excavation increased abrasion resistance.
With reference to figure 5c, soffit also can adopt similar structure, and the soffit of said wedge shape bucket tooth body 400 also can have soffit center bar shaped face, and the left and right sides of said soffit center bar shaped face tilts to the internal direction of said wedge shape bucket tooth body 400.
In addition, the present invention also provides a kind of embodiment of power shovel, and scraper bowl comprises bucket tooth, and said bucket tooth comprises:
Wedge shape bucket tooth body 400;
The thick tooth surface 410 in top is positioned at the upper surface of said wedge shape bucket tooth body 400;
Top approaches tooth surface 421,422, is the curved surface that the upper surface by said wedge-shaped body is recessed to form downwards, is positioned at the both sides of the thick tooth surface 410 in said top, and said curved surface being projected as in perpendicular is with the view field of area.
Bucket tooth can also comprise: the thick tooth surface 450 in bottom is positioned at the soffit of said wedge shape bucket tooth body 400;
Bottom thin tooth surface 461,462 is second curved surfaces that the soffit by said wedge-shaped body caves inward and forms, and is positioned at the both sides of the thick tooth surface 450 in said bottom, and said second curved surface being projected as in perpendicular is with second view field of area.The front end of said wedge shape bucket tooth body 400 has end face 430; Have transition face 440 between thick tooth surface 410 in said top and the said end face 430, the angle of inclination of said transition face 440 is greater than the angle of inclination of the thick tooth surface 410 in said top.
By on can know that the embodiment of the invention has following advantage:
1) in the embodiment of the invention; Thin tooth surface 421,422 being projected as in perpendicular in top are with the view field of area; Therefore top approaches tooth surface the 421, the 422nd, three-dimension curved surface (being similar to the part that the face of cylinder adds the compound curved surface of sphere), so more even to the transition of thin tooth by thick tooth, thin tooth also is taper; Easy fracture not, the application life of having improved bucket tooth.And top approaches tooth surface 421,422, also is being skew surface by thick tooth to thin tooth direction, so unload the load of this direction easily, can throw the bigger excavation load of opposing, the application life of further having improved bucket tooth.
2) bucket tooth of the embodiment of the invention continues to continue to use thick middle; The design feature that both sides are thin; Under the situation that guarantees the good property excavated,, make the bucket tooth cross section be two triangle reinforcements (with reference to figure 4 and Fig. 5 d) through thin tooth surface 421,422 in top and bottom thin tooth surface 461,462 are set; Improve the intensity and the anti-fracture energy of bucket tooth, had better wear resistance.
3) both sides of said wedge shape bucket tooth body have thin increment face 481,482; Said thin increment face is wide trapezoidal in the left narrow right side, thereby thin tooth has been strengthened thin tooth intensity laterally also becoming trapezoidal by thick attenuation; And have good casting manufacturability, be not prone to casting flaws such as shrinkage cavity shrinkage porosity.
4) in the embodiment of the invention, the bucket tooth front end stays a transition face 440, has guaranteed the optimized cutting angle; Make contact area increase simultaneously, the anti-wear performance of bucket tooth strengthens, and is able to the application life of bucket tooth prolong; Reduce and change number of times, improved the practicality and the economy of product.
5) embodiment of the invention makes two jiaos of chamferings of bucket tooth front end through chamfering inclined-plane 431,432 is set, and removes to be prone to the mill position, reduces excavating resistance, reduces bucket tooth weight, improves stock utilization, reduces cost.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. the bucket tooth of a power shovel is characterized in that, comprising:
Wedge shape bucket tooth body (400);
The thick tooth surface in top (410) is positioned at the upper surface of said wedge shape bucket tooth body (400);
Top approaches tooth surface (421,422), is the curved surface that the upper surface by said wedge-shaped body is recessed to form downwards, is positioned at the both sides of the thick tooth surface in said top (410), and the projection of said curved surface in perpendicular is the view field that is with area.
2. bucket tooth according to claim 1 is characterized in that, the both sides of said wedge shape bucket tooth body have thin increment face (481,482), and said thin increment face is wide trapezoidal in the left narrow right side.
3. bucket tooth according to claim 1 is characterized in that, the front end of said wedge shape bucket tooth body (400) has end face (430), and the both sides of said front end have chamfering inclined-plane (431,432).
4. bucket tooth according to claim 3 is characterized in that, projection line and angle horizon between of said chamfering inclined-plane in horizontal plane spent less than 45 greater than 10 degree.
5. bucket tooth according to claim 4 is characterized in that, has transition face (440) between thick tooth surface in said top (410) and the said end face (430), and the angle of inclination of said transition face (440) is greater than the angle of inclination of the thick tooth surface in said top (410).
6. according to claim 1,2,3,4 or 5 described bucket tooths, it is characterized in that, also comprise:
The thick tooth surface in bottom (450) is positioned at the soffit of said wedge shape bucket tooth body (400);
Bottom thin tooth surface (461,462) is second curved surface that the soffit by said wedge-shaped body caves inward and forms, and is positioned at the both sides of the thick tooth surface in said bottom (450), and said second curved surface being projected as in perpendicular is with second view field of area.
7. bucket tooth according to claim 6 is characterized in that, the upper surface of said wedge shape bucket tooth body (400) has center bar shaped face (470), and the left and right sides of said center bar shaped face tilts to the internal direction of said wedge shape bucket tooth body (400); The soffit of said wedge shape bucket tooth body (400) has soffit center bar shaped face, and the left and right sides of said soffit center bar shaped face tilts to the internal direction of said wedge shape bucket tooth body (400).
8. a power shovel comprises bucket tooth, it is characterized in that, said bucket tooth comprises:
Wedge shape bucket tooth body (400);
The thick tooth surface in top (410) is positioned at the upper surface of said wedge shape bucket tooth body (400);
Top approaches tooth surface (421,422), is the curved surface that the upper surface by said wedge-shaped body is recessed to form downwards, is positioned at the both sides of the thick tooth surface in said top (410), and the projection of said curved surface in perpendicular is the view field that is with area.
9. power shovel according to claim 8 is characterized in that, also comprises:
The thick tooth surface in bottom (450) is positioned at the soffit of said wedge shape bucket tooth body (400);
Bottom thin tooth surface (461,462) is second curved surface that the soffit by said wedge-shaped body caves inward and forms, and is positioned at the both sides of the thick tooth surface in said bottom (450), and said second curved surface being projected as in perpendicular is with second view field of area.
10. power shovel according to claim 8 is characterized in that, the front end of said wedge shape bucket tooth body (400) has end face (430); The both sides of said front end have the chamfering inclined-plane, and projection line and angle horizon between of said chamfering inclined-plane in horizontal plane spent less than 45 greater than 10 degree; Have transition face (440) between thick tooth surface in said top (410) and the said end face (430), the angle of inclination of said transition face (440) is greater than the angle of inclination of the thick tooth surface in said top (410); The both sides of said wedge shape bucket tooth body have thin increment face (481,482), and said thin increment face is wide trapezoidal in the left narrow right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100953969A CN102733446A (en) | 2011-04-15 | 2011-04-15 | Digging bucket and bucket teeth thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100953969A CN102733446A (en) | 2011-04-15 | 2011-04-15 | Digging bucket and bucket teeth thereof |
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| Publication Number | Publication Date |
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| CN102733446A true CN102733446A (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100953969A Pending CN102733446A (en) | 2011-04-15 | 2011-04-15 | Digging bucket and bucket teeth thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104343147A (en) * | 2014-09-20 | 2015-02-11 | 常州市武进南夏墅苏南锻造有限公司 | Bucket tooth of excavator |
| CN105714075A (en) * | 2016-01-30 | 2016-06-29 | 李令禹 | Split bucket tooth for buckets of excavators and manufacturing method thereof |
| CN105863635A (en) * | 2016-04-05 | 2016-08-17 | 方义飞 | Pick, pick assembly, pick roller, crushing device, heading machine and coal cutter |
| CN111183261A (en) * | 2017-08-30 | 2020-05-19 | 卡特彼勒公司 | Heavy adapter |
| CN115516176A (en) * | 2020-03-04 | 2022-12-23 | 现代斗山英维高株式会社 | Digging tooth and digging bucket with same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343147A (en) * | 2014-09-20 | 2015-02-11 | 常州市武进南夏墅苏南锻造有限公司 | Bucket tooth of excavator |
| CN105714075A (en) * | 2016-01-30 | 2016-06-29 | 李令禹 | Split bucket tooth for buckets of excavators and manufacturing method thereof |
| CN105714075B (en) * | 2016-01-30 | 2019-05-28 | 李令禹 | A kind of excavator-type shovel clamshell excavator seperated bucket tooth and its manufacturing method |
| CN105863635A (en) * | 2016-04-05 | 2016-08-17 | 方义飞 | Pick, pick assembly, pick roller, crushing device, heading machine and coal cutter |
| CN105863635B (en) * | 2016-04-05 | 2018-02-06 | 曹艺刚 | Pick and pick assembly, pick roller, disintegrating apparatus, development machine, coal-winning machine |
| CN111183261A (en) * | 2017-08-30 | 2020-05-19 | 卡特彼勒公司 | Heavy adapter |
| CN111183261B (en) * | 2017-08-30 | 2022-07-01 | 卡特彼勒公司 | Heavy adapter |
| CN115516176A (en) * | 2020-03-04 | 2022-12-23 | 现代斗山英维高株式会社 | Digging tooth and digging bucket with same |
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Application publication date: 20121017 |