CN101736772B - Tooth system - Google Patents
Tooth system Download PDFInfo
- Publication number
- CN101736772B CN101736772B CN2008102463765A CN200810246376A CN101736772B CN 101736772 B CN101736772 B CN 101736772B CN 2008102463765 A CN2008102463765 A CN 2008102463765A CN 200810246376 A CN200810246376 A CN 200810246376A CN 101736772 B CN101736772 B CN 101736772B
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- tooth
- adapter
- flange
- protecgulum
- root
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 17
- 230000001154 acute effect Effects 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Component Parts Of Construction Machinery (AREA)
Abstract
The invention relates to a tooth system used in earthmoving equipment, such as dredging or mining equipment, comprising a tooth and an adapter, wherein the tooth is detachably installed on the adapter and comprises a tooth plate extending along the longitudinal direction, a tooth root extending along the longitudinal direction and a tooth top arranged a distance away from the tooth root and extending along the longitudinal direction, and the tooth root and the tooth top extend along the transverse direction relative to the tooth plate; the adapter comprises an adapter base and an adapter head, the adapter base is fixed on the earthmoving equipment, if the adapter base is fixed on a rack of a rake head, an undercutting groove extending along the longitudinal direction is formed between the adapter base and the adapter head, wherein the tooth root is slidably installed in the undercutting groove, the adapter head is slidably installed between the tooth root and the tooth top and is used for assembling or disassembling the tooth relative to the front end of the adapter, and the adapter also comprises at least one area opposite to the tooth in a corresponding shape. At least one pair of opposite areas with corresponding shapes of the adapter and the tooth comprises a trapezoidal structure.
Description
Technical field
The present invention relates to a kind of tooth system that for example is used in cubic metre of earth equipment such as dredging or winning equipment; This tooth system comprises tooth and adapter; Tooth is installed on the adapter removably, and said tooth comprises the tooth plate that extends longitudinally, the tooth root that extends longitudinally and apart from the tooth top that extends longitudinally of tooth root certain distance, said tooth root and tooth top also with respect to tooth plate along horizontal expansion; Said adapter comprises adapter pedestal and adaptor top; The adapter pedestal is fixed on cubic metre of earth equipment, as is fixed on the tooth bar of drag head, between adapter pedestal and adaptor top, has formed the undercut groove that extends longitudinally; Wherein tooth root is slidably mounted in the undercut groove; And adaptor top is slidably mounted between tooth root and the tooth top, is used for front end assembling or the dismounting of tooth with respect to adapter, and said adapter comprises at least one zone towards the corresponding shape area of tooth.
Background technology
This tooth system is open in WO2005/005737.Said tooth system of the prior art is intended between tooth and adapter, provide reliable connection.In addition, the quick replacing of this system's considered tooth.For example this system can be used for the work relevant with dredging operation, and many in this case adapters that carry tooth separately are installed on the drag head of soil-shifting machine.In use, when carrying out dredging operation, the material that tooth and adapter all can be cut is like rock, stone, sand or the similarly influence of material.These materials act on sizable power on tooth and adapter, cause the excavation of tooth partly to be worn and torn, so these teeth need be changed frequently.Yet adapter equally also can receive considerable wear.This makes said in some cases adapter have problems when being fixedly attached on the tooth bar of drag head for example with method of for example welding.In other cases, adapter is fixed with releasable form.
Therefore, the replacing of adapter more bothers than the replacing of tooth, and in fact tooth has ad hoc been realized providing for simple replacement of.But the defective of the adapter of having ground away is they have received adverse influence with the function that tooth firmly remains on the appropriate location.Described tooth will can not get enough supports, cause this tooth with respect to its adapter certain activity (play) to take place.Yet these movable phenomenons also will weaken the function of cutter head itself.Therefore, after a period of time, such adapter of having ground away also should be changed, and this just means the portion that is welded to connect of breaking off, and the adapter of replacement is welded on the drag head.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of tooth system of form as previously mentioned, this tooth system both provided better support for tooth with respect to its adapter, and also avoiding wearing and tearing for adapter provides better protection.The method that realizes this purpose is to make at least one pair of corresponding zone of facing mutually that is shaped of adapter and tooth comprise step structure.
The advantage in the face of regional step structure of adapter and tooth has two aspects among the present invention.At first, this stair-step appearance in the face of the zone is that tooth provides stable support with respect to adapter.Stepped region provides the zone that separates to be used for support teeth, is suitable for bearing the power and the moment of flexure that are applied on the tooth.In addition, should the possibility of allowing any flaw on the opposed face and not weakening the stability of tooth be provided zone separately, this flaw possibly produce in the process of said part.
And step structure makes tooth more to be prone to change with respect to its adapter.In this connected, step structure preferably can make the sipes part link to each other with the front end of adapter for adapter limits a sipes part and a narrow slot part by this.Replenish as other a kind of selection or conduct, step structure can limit a thin adapter flange portion and a thick adapter flange portion, makes thin adapter flange portion link to each other with the front end of adapter by this.Especially, this step structure comprises paired in the face of several and recess on the zone, make thus a pair of part each time platform can with the recess of another part against each other.Preferably; Adapter has at least one adapter recess that links to each other with its front end; And at least one is positioned at the adapter platform of a relative end with its front end of switching tank; In the case, tooth has the recess of at least one tooth platform relative with adapter recess tooth relative with the adapter platform with at least one.
The longitudinal size of recess is bigger than its corresponding platform.Under this profile condition, the recess of facing is overlapped on certain-length, therefore in the overlay region, has one section slit.This profile has aforementioned advantage of allowing flaw.
In the tooth system of prior art, adaptor top comprises relative adapter flange, and this flange surrounds a slit and defines undercut groove at their opposed edges places, and tooth plate passes this slit and extends.In this embodiment, crest top land is to the adapter flange.In addition, tooth plate is positioned in the slit that limits between the relative adapter flange, and tooth root comprises the tooth root flange that extends along the opposite side of tooth plate, and it is relative with corresponding adapter flange that each tooth root flange is positioned to.Through paired the cooperatively interacting of these paired tooth top flanges, adapter flange and tooth top flange, can make tooth obtain extra firm support with respect to adapter.
Preferably, tooth root flange that each is paired and relative adapter flange all have relative flange surface, and said flange surface is with identical but opposite angular orientation.In this connected, the tooth root flange surface of each inclination all comprised tooth root flange recess, this flange recess platform in the adapter flange of correspondence.In addition, the root face of each inclination all comprises tooth root flange platform, and this flange table top is to the adapter flange inner fovea part of correspondence.
Preferably, tooth top comprises two relative tooth top flanges that are positioned at the relative both sides of tooth plate.Each tooth top flange all comprises the tooth top flange platform of recess outside the adapter flange of correspondence.In addition, each tooth top flange all comprises the tooth top flange recess of platform outside the adapter flange of correspondence.
In known manner, tooth comprises the protecgulum that itself is known.In tooth system of the present invention, said protecgulum is with respect to the tooth plate horizontal expansion, and towards the front end of adapter.Preferably, the protecgulum of tooth faces the front end that connects adapter, avoiding stinging of tooth and adapter tight, thereby hinders the replacing of tooth.In this connected, the further improvement of tooth system of the present invention can obtain through tooth top is linked to each other with protecgulum, and for example the form with acute angle links to each other.The compound action of interconnective tooth top and protecgulum is that the zone that receives the effect of attrition of material on the adapter easily provides favourable protection.In addition, interconnective tooth top and protecgulum provide the extra firm effect with respect to the correspondingly-shaped adapter, the front portion of this adapter by the tooth top of said combination and protecgulum closely around.
Locking device can be set, and this locking device comprises the locking element that is positioned at adapter undercut groove one end and is positioned at the lock portion of tooth root towards locking element one end.Locking element and protecgulum are positioned at the adapter end opposite.
For further improving the support of tooth with respect to adapter, the undercut groove of adapter can be from the indentation gradually to narrow relatively rear end of wide relatively front end, and tooth root has corresponding tapering.Protecgulum is at the wide relatively front end of adapter, and locking element is positioned at or near the narrow relatively rear end of adapter.
Tooth top covers adapter towards outer surface on a large scale, this means that adapter avoids being cut the influence of loose fret wear to a great extent.Certainly, tooth top self will receive such wearing and tearing, but considers in any case, will be changed every now and then like the tooth of said form, and such wearing and tearing are complete acceptables.
Description of drawings
Combine the embodiment shown in the accompanying drawing that the present invention is done further detailed description now.
Fig. 1 is the rear perspective according to tooth system of the present invention.
Fig. 2 is that the master who accordings to tooth system of the present invention looks phantom drawing.
Fig. 3 is the lateral view of tooth system.
Fig. 4 is the lateral view according to the IV-IV cross section among Fig. 5.
Fig. 5 is the vertical view of tooth system.
Fig. 6 is the sectional view according to the VI-VI among Fig. 5.
Fig. 7 is the sectional view according to the VII-VII among Fig. 5.
Fig. 8 is the sectional view according to the VIII-VIII among Fig. 5.
Fig. 9 is the sectional view according to the IX-IX among Fig. 5.
Figure 10 is that the master of tooth looks phantom drawing.
Figure 11 is the lateral view of tooth.
Figure 12 is that the master of adapter looks phantom drawing.
Figure 13 is the vertical view of adapter.
Figure 14 is that another master of adapter looks phantom drawing.
Figure 15 is the phantom drawing of wear plate.
Figure 16 is the vertical view that the system of wear plate among Figure 15 is housed.
Figure 17 is the phantom drawing of seeing from the below according to the suction cutter of tooth system of the present invention that is equipped with.
Figure 18 is the lateral view of the suction dredge among Figure 17.
Figure 19 is the amplification detailed drawing of XIX part among Figure 18.
Figure 20 is the upward view of the suction dredge among Figure 17.
The specific embodiment
According to tooth system of the present invention, as shown in the figure, comprise the tooth 1 that is connected on the adapter 2.Said tooth 1 comprises like Fig. 4, the tooth root 4 shown in 10 and 11 and tooth with cutting edge 3 and excavates element 5.In addition, tooth is included in the tooth plate 6 that extends between tooth root 4 and the tooth top 15.Said tooth top 15 is positioned at tooth root 4 opposites.Adapter 2 comprises the adapter pedestal 7 with two relative perpendicular walls 8, and said two perpendicular walls support adaptor top 29.Adaptor top 29 has relative adapter flange 9.Said adapter pedestal 7, perpendicular wall 8 and have the adaptor top 29 of seizing device flange 9 on both sides by the arms and define undercut groove 10, this groove in the position of adapter flange 9 through slit 11 outside openings.
Shown in Fig. 1-5, the tooth root 4 of tooth 1 is slided in the undercut groove 10 of adapter 2.Simultaneously, the tooth plate 6 of tooth 1 is received within the slit 11 of adapter 2.Because tooth 1 comprises and the relative protecgulum 12 of adapter 2 front ends 13 that in case front end 13 contacts with protecgulum 12, said tooth 1 just is limited with respect to the sliding motion of adapter 2.In order further to improve the locking of tooth 1 with respect to adapter 2, the front end 13 of adapter 2 comprises recess 31, and the apparent surface of protecgulum 12 comprises the convexity 30 that is received in the said recess 31.At the opposite end of adapter 2 and front end 13, locking device 14 is set is used for tooth 1 with respect to adapter 2 lockings.Said locking device 14 comprises the locking element 32 that is connected on the adapter 2, and the unci 33 (as shown in Figure 4) that forms the part of tooth 1.
As above-mentioned, has tooth top 15 on the tooth 1.Said tooth top 15 is connected to protecgulum 12, and comprises two the tooth top flanges 16,17 on the opposite side that is positioned at tooth plate 6.Similarly, protecgulum 12 comprises two flanges 18,19 on the opposite side that is positioned at tooth plate 6 equally.Tooth top flange 16,17 is pressed on the corresponding adapter flange 9 separately.Said tooth top 15 combines with protecgulum 12, and protection adapter 2 is avoided the abrasive action of the material that said tooth system cuts.
Improve the purpose of tooth 1 with respect to the stable support of adapter 2 for reaching, tooth top flange 16,17 is included in the tooth top flange recess 22 of its rear end separately and faces the tooth top flange platform (land) 21 that meets protecgulum 12 places at its front end.Similarly, adapter flange 9 is included in the outer platform 26 of adapter flange of its rear end and recess 28 outside the adapter flange of its front end.Thereby; Through the outer recess 28 (also seeing the cross section of Fig. 6) of these paired tooth top flange platforms 21 and adapter flange; And through the outer platform 26 (also seeing the cross section of Fig. 8) of paired tooth top flange recess 22 and adapter flange, tooth top flange 16,17 is stably supported with respect to the adapter flange 9 of correspondence.
Above-mentioned paired platform and recess are separated by gap as shown in Figure 4 36 and 37, in a certain distance apart from one another.Thereby last any irregular of apparent surface can be allowed, and can not be weakened stability of strutting system.
Can clearly see that from the vertical view of Figure 13 and the sectional drawing of Fig. 4 the inside groove 10 of adapter 2 is tapers, extend to the back-end from the cross section that front end 13 is wide relatively.Similarly, tooth root 4 is tapers, so that closely be engaged in the said inside groove 10.
Like Fig. 4,9, shown in 15 and 16, wearing plate 35 is positioned on the adapter pedestal 7, and installs through bolt 34.This wearing plate protection adapter pedestal is avoided wearing and tearing, and after its repeatedly replacing because of tooth is ground away, can be changed like a cork.
Figure 18-20 shows the example that tooth system of the present invention is applied to suction cutter.Cutter head generally includes the suction chamber shell 38 that has suction inlet 41 and be connected to suction nozzle 40, and this suction nozzle will be connected to the suction pipe that leads to dredge boat (not shown) feed bin.In addition, pressure pipeline 39 is set and is provided for the pressure (hydraulic) water in the working angles for nozzle.Be installed near the suction chamber shell the suction inlet 41 according to the adapter 1 of tooth system of the present invention, tooth 2 is oriented to when suction cutter during by dilatory in said bottom (to the right of scheming) by this, and they can apply shear action in water bottom.
Reference numerals list:
1 tooth
2 adapters
3 tooth cutting edges
4 tooth roots
5 teeth excavate element
6 tooth plates
7 adapter pedestals
8 adapters erect wall
9 adapter flanges
10 undercut groove
11 adapter slits
12 tooth protecgulums
13 adapter front ends
14 locking devices
15 tooth tops
16 tooth top flanges
17 tooth top flanges
18 tooth protecgulum flanges
19 tooth protecgulum flanges
Platform in the 20 adapter flanges
21 tooth top flange platforms
22 tooth top flange recesses
23 adapter flange inner fovea parts
24 tooth root flanges
25 tooth root flange recesses
The outer platform of 26 adapter flanges
27 tooth root flange platforms
The outer recess of 28 adapter flanges
29 adaptor top
30 convexities
31 recesses
32 locking units
33 lock portions
34 bolts
35 wearing plates
Gap, 36 tooth top place
Gap, 37 tooth root place
38 suction chamber shells
39 pressure pipelines
40 suction nozzles
41 suction inlets
42 nozzles
Claims (27)
1. tooth system that is used in cubic metre of earth equipment; Comprise tooth (1) and adapter (2); Tooth (1) is installed on the adapter (2) removably; Said tooth (1) comprises the tooth plate (6) that extends longitudinally, the tooth root (4) that extends longitudinally and apart from the tooth top that extends longitudinally (15) of tooth root (4) certain distance, said tooth root and tooth top (15) also with respect to tooth plate (6) along horizontal expansion, said adapter (2) comprises adapter pedestal (7) and adaptor top (29); Adapter pedestal (7) is fixed on cubic metre of earth equipment; Between adapter pedestal (7) and adaptor top (29), formed the undercut groove (10) that extends longitudinally, wherein tooth root (4) is engaged in the undercut groove (10) slidably, and wherein adaptor top (29) is engaged between tooth root (4) and the tooth top (15) slidably; So that the front end (13) of tooth (1) with respect to adapter (2) assembled or disassembles; Said adapter (2) comprises at least one and the corresponding shape area region facing of tooth (1), and the opposed area of at least one pair of correspondingly-shaped of adapter (2) and tooth (1) comprises step structure, and adaptor top (29) comprises relative side direction adapter flange (9); This adapter flange surrounds a slit (11) and limits undercut groove (10) at their opposed edges places; Tooth plate (6) extends through slit (11), and wherein tooth top (15) is in the face of adapter flange (9), and tooth root (4) is included in the tooth root flange (24) that extends on tooth plate (6) opposite side; Each tooth root flange (24) is in the face of corresponding adapter flange (9); Paired tooth root flange (24) and the adapter flange of facing (9) all have the ledge surface of facing, and this ledge surface is to equate but opposite angular orientation, and the tooth root ledge surface that tilts all comprises tooth root flange recess (25) and tooth root flange platform (27); Said tooth root flange recess (25) is in the face of platform (20) in the corresponding adapter flange, and said tooth root flange platform (27) is in the face of corresponding adapter flange inner fovea part (23).
2. tooth system as claimed in claim 1 is characterized in that, step structure defines sipes part and narrow slot part, and said sipes partly joins with the front end (13) of adapter (2).
3. according to claim 1 or claim 2 tooth system is characterized in that, step structure limits thin adapter flange portion and thick adapter flange portion, and thin by this adapter flange portion and adapter (2) front end join.
4. according to claim 1 or claim 2 tooth system is characterized in that the step structure of paired opposed area comprises platform (20,26; 27,21) and recess (25,22; 23,28).
5. tooth system as claimed in claim 4 is characterized in that, recess (25,22; 23,28) than platform (20,26; 27,21) have bigger longitudinal size, thereby in the zone of relative recess, form gap (36,37).
6. according to claim 1 or claim 2 tooth system; It is characterized in that; Adapter (2) has adapter recess (23,28) that at least one and its front end (13) join and at least one is positioned at the adapter platform (20,26) at an end place of the adapter recess (23,28) opposite with front end (13), and tooth (1) has at least one tooth platform (27,21) relative with adapter recess (23,28) tooth-indented portion (25,22) relative with adapter platform (20,26) with at least one.
7. tooth system as claimed in claim 1 is characterized in that, tooth top (15) comprises two relative tooth top flanges (16,17).
8. tooth system as claimed in claim 7 is characterized in that, tooth top flange (16,17) is positioned on tooth plate (6) opposite side.
9. like claim 7 or 8 described tooth systems, it is characterized in that tooth top flange (16,17) all comprises tooth top flange platform (21), said tooth top flange platform (21) is in the face of the outer recess (28) of corresponding adapter flange.
10. tooth system as claimed in claim 9 is characterized in that, tooth top flange (16,17) all comprises tooth top flange recess (22), and said tooth top flange recess (22) is in the face of the outer platform (26) of corresponding adapter flange.
11. tooth system as claimed in claim 1 is characterized in that, tooth comprises protecgulum (12), and this protecgulum is also faced the front end (13) of adapter (2) with respect to tooth top (15) horizontal expansion.
12. tooth system as claimed in claim 11 is characterized in that, tooth top (15) and protecgulum (12) interconnect.
13., it is characterized in that protecgulum (12) has convexity (30) like claim 11 or 12 described tooth systems, and the front end (13) of adapter (2) comprises the recess (31) that holds said convexity (30).
14., it is characterized in that protecgulum (12) is included in the protecgulum flange (18,19) that extends on tooth plate (4) opposition side like claim 11 or 12 described tooth systems.
15. tooth system as claimed in claim 9 is characterized in that, tooth comprises protecgulum (12), and this protecgulum is also faced the front end (13) of adapter (2) with respect to tooth top (15) horizontal expansion.
16. tooth system as claimed in claim 15 is characterized in that, protecgulum (12) is included in the protecgulum flange (18,19) that extends on tooth plate (4) opposition side.
17. tooth system as claimed in claim 16 is characterized in that, each tooth top flange platform (21) is all adjacent with corresponding protecgulum flange (18,19).
18. tooth system according to claim 1 or claim 2; It is characterized in that; Be provided with locking device (14), it comprise the undercut groove (10) that is positioned at adapter (2) an end place locking element (32) and be positioned at tooth plate (6) and locate the lock portion (33) in the face of locking element (32).
19. tooth system as claimed in claim 11; It is characterized in that; Be provided with locking device (14), it comprise the undercut groove (10) that is positioned at adapter (2) an end place locking element (32) and be positioned at tooth plate (6) and locate the lock portion (33) in the face of locking element (32).
20. as quote the described tooth system of claim 19, it is characterized in that locking element and protecgulum (12) are positioned at the end opposite of adapter (2).
21. tooth system according to claim 1 or claim 2 is characterized in that, the undercut groove (10) of adapter (2) forms taper from wide relatively front end (13) to narrow relatively rear end, and the tooth root (4) of tooth (1) has corresponding taper.
22. tooth system as claimed in claim 20 is characterized in that, protecgulum (12) is positioned at the wide relatively front end (13) of adapter (2), and locking element (32) is positioned at or near the narrow relatively rear end of adapter (2).
23. tooth system according to claim 1 or claim 2 is characterized in that, tooth (1) comprises that the tooth that extends from tooth top (15) excavates element (5).
24. tooth system according to claim 1 or claim 2 is characterized in that, between adapter pedestal (7) and tooth root (4), is provided with wearing plate (35).
25. tooth system as claimed in claim 1 is characterized in that, said cubic metre of earth of equipment is dredging or winning equipment.
26. tooth system as claimed in claim 1 is characterized in that, adapter pedestal (7) is fixed on the tooth bar of drag head.
27. tooth system as claimed in claim 12 is characterized in that, tooth top (15) and protecgulum (12) interconnect with acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102463765A CN101736772B (en) | 2008-11-04 | 2008-11-04 | Tooth system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102463765A CN101736772B (en) | 2008-11-04 | 2008-11-04 | Tooth system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101736772A CN101736772A (en) | 2010-06-16 |
| CN101736772B true CN101736772B (en) | 2012-07-18 |
Family
ID=42460756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102463765A Active CN101736772B (en) | 2008-11-04 | 2008-11-04 | Tooth system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101736772B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2385395A (en) * | 1944-02-11 | 1945-09-25 | Electric Steel Foundry | Excavating tooth |
| US3345765A (en) * | 1965-05-05 | 1967-10-10 | Petersen Anita E | Reversely bent resilient retainer for digging implement blades |
| CN101253298A (en) * | 2005-08-30 | 2008-08-27 | 艾斯科公司 | Wear assembly for excavating machines |
-
2008
- 2008-11-04 CN CN2008102463765A patent/CN101736772B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2385395A (en) * | 1944-02-11 | 1945-09-25 | Electric Steel Foundry | Excavating tooth |
| US3345765A (en) * | 1965-05-05 | 1967-10-10 | Petersen Anita E | Reversely bent resilient retainer for digging implement blades |
| CN101253298A (en) * | 2005-08-30 | 2008-08-27 | 艾斯科公司 | Wear assembly for excavating machines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101736772A (en) | 2010-06-16 |
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