CN104806236A - Hinge pin device and coal mining machine - Google Patents
Hinge pin device and coal mining machine Download PDFInfo
- Publication number
- CN104806236A CN104806236A CN201510090310.1A CN201510090310A CN104806236A CN 104806236 A CN104806236 A CN 104806236A CN 201510090310 A CN201510090310 A CN 201510090310A CN 104806236 A CN104806236 A CN 104806236A
- Authority
- CN
- China
- Prior art keywords
- shaft device
- pin shaft
- hinge pin
- bearing pin
- axle sleeve
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
Abstract
The invention provides a hinge pin device and a coal mining machine. The hinge pin device is applied to the coal mining machine and comprises taper sleeves and a hinge pin, wherein the taper sleeves are mounted at two ends of the hinge pin. The hinge pin device is characterized by further comprising a shaft sleeve connected onto the hinge pin in a sleeving manner, and lubricant accommodating holes are formed in the shaft sleeve. With adoption of the technical scheme, on the one hand, by means of the lubricant accommodating holes formed in the shaft sleeve of the hinge pin device, normal lubrication and operation of the hinge pin can be guaranteed effectively for a long time, and a manual oil injection link is omitted; on the other hand, a dust ring is mounted on the shaft sleeve of the hinge pin device, so that the working environment between the hinge pin and the shaft sleeve can be improved effectively, and the service life of the hinge pin device is prolonged; further, openings and steps are formed on the taper sleeves of the hinge pin device, accordingly, displacement of the hinge pin can be prevented effectively, and an axial positioning function is realized.
Description
Technical field
The present invention relates to coal-winning machine technical field, in particular to a kind of pin shaft device and a kind of coal-winning machine.
Background technology
Coal-winning machine is the nucleus equipment of fully-mechanized mining working, has been mainly used in coal breakage and step of coalingging.About coal-winning machine, two cutting units realize swinging under the promotion of oil cylinder, complete coal breakage and step of coalingging, are applicable to different coal seam height.Shearer hauled-part and being articulated and connected of cutting units are the center of rotation realizing swinging, so coal-winning machine hinge linkage is the important component part that shearer part connects, its reliability directly affects the overall performance of coal-winning machine.Because winning machine cutting part produces very large shock loading at work, so hinge linkage easily loosens and axial float phenomenon because connecting appears in vibration.Meanwhile, due to factors such as load are large, working environment dust is large and moist, hinge linkage is easily engaged with cutting units, and when lack of lubrication, easily together with cutting units corrosion, thus causes pin shaft device function to lose efficacy and dismounting difficulty.Also be like this in the use procedure of reality, often there is dismounting difficulty, bolt looseness and axial float, bearing pin and the problem such as axle sleeve corrosion, the conquassation of cutting units earhole, then device is caused to damage, and in the middle of actual motion, miner is difficult to ensure that the moment pays close attention to bearing pin oiling conditions, so many times can not ensure to carry out timely oiling to bearing pin.
At present, the hinge linkage that coal-winning machine is conventional has following two kinds of modes: Step Shaft structure (as shown in Figure 1) and axis of cone tapered sleeve structure (as shown in Figures 2 and 3), but they exist following problem:
(1) step shaft type pin shaft device, comprise bearing pin 1062, axle sleeve 1063 and pressing plate 1067, bearing pin 1062 is socketed with axle sleeve 1063, and link together with pressing plate 1067, this pin shaft device 106 anti-loosening property is poor, installing/dismounting is difficult and be designed with oiling oil duct on Step Shaft of being everlasting, and oil duct has damage to bearing pin intensity.
(2) axis of cone taper sleeve type pin shaft device, comprise: tapered sleeve 1061, axle sleeve 1063 (band oil storage environment), pressing plate 1067, bolt 1064, packing ring 1065, nut 1066 and bearing pin 1062, tapered sleeve 1061 is connected with bearing pin 1062 by bolt 1064, axle sleeve 1063 is socketed in bearing pin 1062, pressing plate 1067 covers the outside at tapered sleeve 1061, bolt 1064 and packing ring 1065, nut 1066 are tightened fixing, this pin shaft device 106 pressing plate anti-loosening property is good, easy installation and removal, but oiling is inconvenient.
Therefore, need a kind of Novel pin shaft device, can one of solve the problems of the technologies described above.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art or correlation technique.
For this reason, one object of the present invention is to propose a kind of pin shaft device.
Another object of the present invention is to propose a kind of coal-winning machine.
For realizing at least one object above-mentioned, embodiment according to a first aspect of the invention, propose a kind of pin shaft device, for coal-winning machine, comprising: tapered sleeve and bearing pin, described tapered sleeve is arranged on the two ends of described bearing pin, it is characterized in that, also comprise: axle sleeve, be socketed on described bearing pin, and described axle sleeve is provided with sliding agent putting hole.
Pin shaft device according to an embodiment of the invention, by arranging sliding agent putting hole on axle sleeve, continuous lubrication can be provided in bearing pin rotary course, and then can effectively ensure that bearing pin normally works for a long time, the link of artificial oiling can be avoided simultaneously, can ensure that bearing pin normally lubricates running not noting under oil condition.
According to one embodiment of present invention, in technique scheme, preferably, described sliding agent putting hole has multiple, is uniformly distributed along described axle sleeve circumferencial direction.
Pin shaft device according to an embodiment of the invention, by arranging multiple sliding agent putting hole on axle sleeve, and is uniformly distributed along axle sleeve circumferencial direction, can ensure to provide omnibearing lubrication in bearing pin rotary course, more even to make the lubrication of bearing pin.
According to one embodiment of present invention, in technique scheme, preferably, described axle sleeve is provided with groove.
Pin shaft device according to an embodiment of the invention, by arranging groove on axle sleeve, for placing dust ring, for the working environment improved between bearing pin and axle sleeve provides favourable guarantee.
According to one embodiment of present invention, in technique scheme, preferably, also comprise: dust ring, be arranged in described groove.
Pin shaft device according to an embodiment of the invention, by installing dust ring in groove, can improve the working environment between bearing pin and axle sleeve effectively, and then extends the application life of pin shaft device.
According to one embodiment of present invention, in technique scheme, preferably, described tapered sleeve is provided with opening.
Pin shaft device according to an embodiment of the invention, by arranging opening on tapered sleeve, can increase the deformability of tapered sleeve effectively, improves lock ability, and then can effectively prevent bearing pin play.
According to one embodiment of present invention, in technique scheme, preferably, described opening has multiple, and wherein, the length of an opening in described multiple opening is greater than the length of residue opening.
Pin shaft device according to an embodiment of the invention, by arranging multiple opening on tapered sleeve, and ensure that the length of one of them opening is all greater than the length of residue opening, four openings are such as set on tapered sleeve, three short one is long, effectively can increase the deformability of tapered sleeve, improve lock ability, and then can effectively prevent bearing pin play.
According to one embodiment of present invention, in technique scheme, preferably, described tapered sleeve is also provided with step, for preventing described tapered sleeve and the overall play of described bearing pin.
Pin shaft device according to an embodiment of the invention, by arranging step on tapered sleeve, for location, effectively can prevent tapered sleeve and the overall play of bearing pin, playing the effect of axial location.
According to one embodiment of present invention, in technique scheme, preferably, described tapered sleeve is arranged on the two ends of described bearing pin by bolt, and the two ends of described bolt are provided with packing ring.
Pin shaft device according to an embodiment of the invention, by bolt (such as, stay bolt) tapered sleeve is arranged on the two ends of bearing pin, then nut screwing clamping is used to connect, packing ring is used (such as at the two ends of bolt, dish-like safe lock washer) locking effect effectively can be played to bolt, and then enough coupling mechanism forces are kept to bearing pin.
According to one embodiment of present invention, in technique scheme, preferably, described sliding agent putting hole is for placing kollag.
Pin shaft device according to an embodiment of the invention, kollag includes but not limited to graphite block, can provide continuous lubrication in bearing pin rotary course.
According to one embodiment of present invention, in technique scheme, preferably, described axle sleeve is made up of the material identical with the material hardness of described cutting units.
Pin shaft device according to an embodiment of the invention; axle sleeve can adopt powerful brass to make; hardness is between 210HBW-250HBW; but be not limited thereto; be advisable with identical with the housing hardness of winning machine cutting part; the housing of axle sleeve damage cutting units really up to the mark under can effectively avoiding impact loading, plays a protective role to cutting units housing.
Embodiment according to a second aspect of the invention, proposes a kind of coal-winning machine, comprises the pin shaft device as above according to any one of technical scheme.
Coal-winning machine according to an embodiment of the invention, by using above-mentioned pin shaft device, on the one hand, can ensure that bearing pin normally lubricates running long-term effectively by arranging sliding agent putting hole on the axle sleeve of pin shaft device, avoiding the link of artificial oiling; On the other hand, effectively can improve working environment between bearing pin and axle sleeve by installing dust ring on the axle sleeve of pin shaft device, and then extend the application life of pin shaft device; Again on the one hand, by arranging opening and step on the tapered sleeve of pin shaft device, effectively can prevent bearing pin play and playing the effect of axial location, namely there are all beneficial effects of above-mentioned pin shaft device.
According to one embodiment of present invention, in technique scheme, preferably, also comprise: cutting units and fuselage, described cutting units is connected by described pin shaft device with described fuselage.
By the present invention, on the one hand, can ensure that bearing pin normally lubricates running long-term effectively by arranging sliding agent putting hole on the axle sleeve of pin shaft device, avoiding the link of artificial oiling; On the other hand, effectively can improve working environment between bearing pin and axle sleeve by installing dust ring on the axle sleeve of pin shaft device, and then extend the application life of pin shaft device; Again on the one hand, by arranging opening and step on the tapered sleeve of pin shaft device, effectively can prevent bearing pin play and playing the effect of axial location.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the front view of the step shaft type pin shaft device of an embodiment in correlation technique;
Fig. 2 shows the lateral view of the step shaft type pin shaft device of an embodiment in correlation technique;
Fig. 3 shows the lateral view of the axis of cone taper sleeve type pin shaft device of another embodiment in correlation technique;
Fig. 4 shows the lateral view of pin shaft device according to an embodiment of the invention;
Fig. 5 shows the lateral view of axle sleeve according to an embodiment of the invention;
Fig. 6 shows the front view of tapered sleeve according to an embodiment of the invention;
Fig. 7 shows the lateral view of the tapered sleeve of Fig. 6;
Fig. 8 shows the schematic diagram of coal-winning machine according to an embodiment of the invention;
Fig. 9 shows the A-A sectional view of the coal-winning machine shown in Fig. 8;
Wherein, the corresponding relation in Fig. 1 to Fig. 9 between Reference numeral and component names is:
1 coal-winning machine, 102 cutting units, 104 fuselages, 106 pin shaft devices, 1061 tapered sleeves, 10612 openings, 10614 steps, 1062 bearing pins, 1063 axle sleeves, 10632 sliding agent putting holes, 10634 grooves, 10636 dust rings, 1064 bolts, 1065 packing rings, 1066 nuts, 1067 pressing plates.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 4 shows the lateral view of pin shaft device according to an embodiment of the invention.
Fig. 5 shows the lateral view of axle sleeve according to an embodiment of the invention.
Fig. 6 shows the front view of tapered sleeve according to an embodiment of the invention.
Fig. 7 shows the lateral view of the tapered sleeve of Fig. 6.
The pin shaft device 106 provided according to some embodiments of the present invention is described referring to Fig. 4 to Fig. 7.
Embodiment according to a first aspect of the invention, propose a kind of pin shaft device 106, for coal-winning machine, comprise: tapered sleeve 1061 and bearing pin 1062, described tapered sleeve 1061 is arranged on the two ends of described bearing pin 1062, it is characterized in that, also comprises: axle sleeve 1063, be socketed on described bearing pin 1062, and described axle sleeve 1063 is provided with sliding agent putting hole 10632.
Pin shaft device 106 according to an embodiment of the invention, by arranging sliding agent putting hole 10631 on axle sleeve 1063, continuous lubrication can be provided in bearing pin 1062 rotary course, and then effectively can ensure that the pin 1062 axial length time normally works, the link of artificial oiling can be avoided simultaneously, can ensure that bearing pin 1062 normally lubricates running not noting under oil condition.
According to one embodiment of present invention, described sliding agent putting hole 10631 has multiple, is uniformly distributed along described axle sleeve 1063 circumferencial direction.
Pin shaft device 106 according to an embodiment of the invention, by arranging multiple sliding agent putting hole 10631 on axle sleeve 1063, and be uniformly distributed along axle sleeve 1063 circumferencial direction, can ensure to provide omnibearing lubrication in bearing pin 1062 rotary course, more even to make the lubrication of bearing pin 1062.
According to one embodiment of present invention, described axle sleeve 1063 is provided with groove 10634.
Pin shaft device 106 according to an embodiment of the invention, by arranging groove 10634 on axle sleeve 1063, for placing dust ring 10636, for the working environment improved between bearing pin 1062 and axle sleeve 1063 provides favourable guarantee.
According to one embodiment of present invention, also comprise: dust ring 10636, be arranged in described groove 10634.
Pin shaft device 106 according to an embodiment of the invention, by installing dust ring 10636 in groove 10634, can improve the working environment between bearing pin 1062 and axle sleeve 1063 effectively, and then extends the application life of pin shaft device 106.
According to one embodiment of present invention, described tapered sleeve 1061 is provided with opening 10612.
Pin shaft device 106 according to an embodiment of the invention, by arranging opening 10612 on tapered sleeve 1061, can increase the deformability of tapered sleeve 1061 effectively, improves lock ability, and then effectively can prevent bearing pin 1062 play.
According to one embodiment of present invention, described opening 10612 has multiple, and wherein, the length of an opening 10612 in described multiple opening 10612 is greater than the length of residue opening 10612.
Pin shaft device 106 according to an embodiment of the invention, by arranging multiple opening 10612 on tapered sleeve 1061, and ensure that the length of one of them opening 10612 is all greater than the length of residue opening 10612, such as four openings 10612 are set on tapered sleeve 1061, three short one is long, effectively can increase the deformability of tapered sleeve 1061, improve lock ability, and then effectively can prevent bearing pin 1062 play.
According to one embodiment of present invention, described tapered sleeve 1061 is also provided with step 10614, for preventing described tapered sleeve 1061 and the overall play of described bearing pin 1062.
Pin shaft device 106 according to an embodiment of the invention, by arranging step 10614 on tapered sleeve 1061, for location, effectively can prevent tapered sleeve 1061 and the overall play of bearing pin 1062, playing the effect of axial location.
According to one embodiment of present invention, described tapered sleeve 1061 is arranged on the two ends of described bearing pin 1062 by bolt 1064, and the two ends of described bolt 1064 are provided with packing ring 1065.
Pin shaft device 106 according to an embodiment of the invention, by bolt 1065 (such as, stay bolt) tapered sleeve 1061 is arranged on the two ends of bearing pin 1062, then nut 1065 is used to tighten connection, packing ring 1065 is used (such as at the two ends of bolt 1064, dish-like safe lock washer) locking effect effectively can be played to bolt 1064, and then enough coupling mechanism forces are kept to bearing pin 1062.
According to one embodiment of present invention, described sliding agent putting hole 10632 is for placing kollag.
Pin shaft device 106 according to an embodiment of the invention, kollag includes but not limited to graphite block, can provide continuous lubrication in bearing pin 1062 rotary course.
According to one embodiment of present invention, described axle sleeve 1063 is made up of the material identical with the material hardness of described cutting units.
Pin shaft device 106 according to an embodiment of the invention; axle sleeve 1063 can adopt powerful brass to make; hardness is between 210HBW-250HBW; but be not limited thereto; be advisable with identical with the housing hardness of winning machine cutting part; the housing of axle sleeve damage cutting units really up to the mark under can effectively avoiding impact loading, plays a protective role to cutting units housing.
Fig. 8 shows the schematic diagram of coal-winning machine according to an embodiment of the invention.
Fig. 9 shows the A-A sectional view of the coal-winning machine shown in Fig. 8.
The coal-winning machine 1 provided according to some embodiments of the present invention is described referring to Fig. 8 to Fig. 9.
Embodiment according to a second aspect of the invention, proposes a kind of coal-winning machine 1, comprises the pin shaft device 106 as above according to any one of technical scheme.
Coal-winning machine 1 according to an embodiment of the invention, by using above-mentioned pin shaft device 106, on the one hand, can ensure that bearing pin normally lubricates running long-term effectively by arranging sliding agent putting hole on the axle sleeve of pin shaft device, avoiding the link of artificial oiling; On the other hand, effectively can improve working environment between bearing pin and axle sleeve by installing dust ring on the axle sleeve of pin shaft device, and then extend the application life of pin shaft device; Again on the one hand, by arranging opening and step on the tapered sleeve of pin shaft device, effectively can prevent bearing pin play and playing the effect of axial location.
According to one embodiment of present invention, also comprise: cutting units 102 and fuselage 104, described cutting units 102 is connected by described pin shaft device 106 with described fuselage 104.
Coal-winning machine 1 according to an embodiment of the invention, by using above-mentioned pin shaft device 106, cutting units 102 and fuselage 104 are coupled together, concrete Connection Step is: being first arranged in cutting units 102 by axle sleeve (needs cold charge), then sealing ring is placed in the groove of axle sleeve, after cutting units 102 mates with fuselage 104, penetrate bearing pin and tapered sleeve respectively, after adjusting position, finally penetrate bolt and packing ring, apply the connection that corresponding moment can complete cutting units 102 and fuselage 104.
More than be described with reference to the accompanying drawings technical scheme of the present invention, on the one hand, can have ensured that bearing pin normally lubricates running long-term effectively by arranging sliding agent putting hole on the axle sleeve of pin shaft device, avoiding the link of artificial oiling; On the other hand, effectively can improve working environment between bearing pin and axle sleeve by installing dust ring on the axle sleeve of pin shaft device, and then extend the application life of pin shaft device; Again on the one hand, by arranging opening and step on the tapered sleeve of pin shaft device, effectively can prevent bearing pin play and playing the effect of axial location.
In the description of this manual, the term such as term " installation/arrange ", " connection " all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this manual, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a pin shaft device, for coal-winning machine, comprising: tapered sleeve and bearing pin, and described tapered sleeve is arranged on the two ends of described bearing pin, it is characterized in that, also comprises: axle sleeve, is socketed on described bearing pin, and described axle sleeve is provided with sliding agent putting hole.
2. pin shaft device according to claim 1, is characterized in that, described sliding agent putting hole has multiple, is uniformly distributed along described axle sleeve circumferencial direction.
3. pin shaft device according to claim 1, is characterized in that, described axle sleeve is provided with groove.
4. pin shaft device according to claim 3, is characterized in that, also comprises: dust ring, is arranged in described groove.
5. pin shaft device according to claim 1, is characterized in that, described tapered sleeve is provided with opening.
6. pin shaft device according to claim 5, is characterized in that, described opening has multiple, and wherein, the length of an opening in described multiple opening is greater than the length of residue opening.
7. pin shaft device according to claim 6, is characterized in that, described tapered sleeve is also provided with step, for preventing described tapered sleeve and the overall play of described bearing pin.
8. pin shaft device according to any one of claim 1 to 7, described tapered sleeve is arranged on the two ends of described bearing pin by bolt, and the two ends of described bolt are provided with packing ring.
9. a coal-winning machine, is characterized in that, comprises the pin shaft device according to any one of claim 1 to 8.
10. coal-winning machine according to claim 9, is characterized in that, also comprises: cutting units and fuselage, and described cutting units is connected by described pin shaft device with described fuselage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510090310.1A CN104806236A (en) | 2014-11-10 | 2015-02-27 | Hinge pin device and coal mining machine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410628303 | 2014-11-10 | ||
| CN2014106283038 | 2014-11-10 | ||
| CN201510090310.1A CN104806236A (en) | 2014-11-10 | 2015-02-27 | Hinge pin device and coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806236A true CN104806236A (en) | 2015-07-29 |
Family
ID=53691388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510090310.1A Pending CN104806236A (en) | 2014-11-10 | 2015-02-27 | Hinge pin device and coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670935A (en) * | 2022-04-14 | 2022-06-28 | 中国煤炭科工集团太原研究院有限公司 | Support carrier capable of being disassembled quickly |
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| WO1998034011A1 (en) * | 1997-02-03 | 1998-08-06 | Kennametal Inc. | Cutting toolholder retention system |
| CN101618359A (en) * | 2009-08-12 | 2010-01-06 | 曹雨 | Vertical type drum and disk grinding and pulping machine |
| CN201574755U (en) * | 2009-12-30 | 2010-09-08 | 太原矿山机器集团有限公司 | Self-lubricating easy-dissembling pin and sleeve connection structure of height adjustable oil cylinder of coal mining machine |
| CN102518669A (en) * | 2011-12-20 | 2012-06-27 | 西安奥奈特固体润滑工程学研究有限公司 | Design method of shaft sleeve used for rocker arm of coal mining machine |
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2015
- 2015-02-27 CN CN201510090310.1A patent/CN104806236A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998034011A1 (en) * | 1997-02-03 | 1998-08-06 | Kennametal Inc. | Cutting toolholder retention system |
| CN101618359A (en) * | 2009-08-12 | 2010-01-06 | 曹雨 | Vertical type drum and disk grinding and pulping machine |
| CN201574755U (en) * | 2009-12-30 | 2010-09-08 | 太原矿山机器集团有限公司 | Self-lubricating easy-dissembling pin and sleeve connection structure of height adjustable oil cylinder of coal mining machine |
| CN102518669A (en) * | 2011-12-20 | 2012-06-27 | 西安奥奈特固体润滑工程学研究有限公司 | Design method of shaft sleeve used for rocker arm of coal mining machine |
Non-Patent Citations (1)
| Title |
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| 中国机械工业年鉴编辑委员会等: "《中国重型机械工业年鉴•2010》", 31 March 2011 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670935A (en) * | 2022-04-14 | 2022-06-28 | 中国煤炭科工集团太原研究院有限公司 | Support carrier capable of being disassembled quickly |
| CN114670935B (en) * | 2022-04-14 | 2024-03-12 | 中国煤炭科工集团太原研究院有限公司 | Support carrier that can disassemble fast |
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Application publication date: 20150729 |
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