CN115506792A - Walking wheel assembly for coal mining machine and coal mining machine - Google Patents
Walking wheel assembly for coal mining machine and coal mining machine Download PDFInfo
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- CN115506792A CN115506792A CN202211122177.XA CN202211122177A CN115506792A CN 115506792 A CN115506792 A CN 115506792A CN 202211122177 A CN202211122177 A CN 202211122177A CN 115506792 A CN115506792 A CN 115506792A
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- shaft body
- coal mining
- sleeve body
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- 239000003245 coal Substances 0.000 title claims abstract description 45
- 238000005065 mining Methods 0.000 title claims abstract description 41
- 230000002093 peripheral effect Effects 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims description 34
- 230000000903 blocking effect Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 17
- 230000001050 lubricating effect Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005461 lubrication Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
- E21C29/22—Propulsion of machines for slitting or completely freeing the mineral from the seam by wheels, endless tracks or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a walking wheel assembly for a coal mining machine and the coal mining machine, which comprise a shaft body, a sleeve body, a gear set, a first bearing and a second bearing, wherein a first flow passage is arranged in the shaft body, and an outlet of the first flow passage is positioned on the outer peripheral wall of the shaft body; the sleeve body is sleeved on the outer peripheral side of the shaft body and can rotate relative to the shaft body, the sleeve body is provided with a second flow channel, the second flow channel comprises an annular groove and a plurality of through holes, the annular groove is arranged on the inner peripheral wall of the sleeve body, an outlet of the first flow channel is opposite to and communicated with a notch of the annular groove, the plurality of through holes are arranged on the outer peripheral side of the annular groove, and each through hole is communicated with the annular groove and penetrates through the sleeve body along the radial direction of the sleeve body; the inner circumferential wall of the gear set is provided with an annular cavity, the gear set is rotatably assembled on the outer circumferential side of the sleeve body, and outlets of the through holes are communicated with the annular cavity; the outlet of the plurality of through holes is located between the first bearing and the second bearing. The walking wheel assembly for the coal mining machine has low failure rate, shortens the replacement period of the walking box, and ensures the production efficiency of the coal mining machine.
Description
Technical Field
The invention relates to the technical field of mining equipment, in particular to a walking wheel assembly for a coal mining machine and the coal mining machine.
Background
The coal mining machine is one of main devices for fully mechanized coal mining, and is mainly used for cutting a coal wall. The coal mining machine comprises a cutting part, a traveling part, a loading part and the like, wherein the traveling part is mainly used for realizing the movement of the coal mining machine, so that the coal mining machine can cut coal walls at different positions. However, in the related art, the failure rate of the walking part is high, and the production efficiency of the coal mining machine is reduced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides the traveling wheel assembly for the coal mining machine, which has low failure rate, shortens the replacement period of the traveling box and ensures the production efficiency of the coal mining machine.
The embodiment of the invention also provides a coal mining machine using the traveling wheel assembly for the coal mining machine.
The walking wheel assembly for the coal mining machine of the embodiment of the invention comprises:
the shaft body is internally provided with a first flow passage, an outlet of the first flow passage is positioned on the peripheral wall of the shaft body, and the first flow passage is used for injecting lubricating liquid;
the sleeve body is sleeved on the periphery side of the shaft body and can rotate relative to the shaft body, the sleeve body is provided with a second flow channel, the second flow channel comprises an annular groove and a plurality of through holes, the annular groove is formed in the inner peripheral wall of the sleeve body, an outlet of the first flow channel is opposite to and communicated with a notch of the annular groove, the outlet of the first flow channel can move in the range of the notch of the annular groove, the through holes are formed in the periphery side of the annular groove and are distributed along the circumferential direction of the annular groove at intervals, and each through hole is communicated with the annular groove and penetrates through the sleeve body along the radial direction of the sleeve body;
the gear set is annular, an annular cavity is formed in the inner peripheral wall of the gear set, the gear set is rotatably assembled on the outer peripheral side of the sleeve body, and outlets of the through holes are communicated with the annular cavity;
the first bearing and the second bearing are assembled in the annular cavity and are used for achieving the rotating assembly of the gear set and the sleeve body, and outlets of the through holes are located between the first bearing and the second bearing.
The walking wheel assembly for the coal mining machine has low failure rate, shortens the replacement period of the walking box, and ensures the production efficiency of the coal mining machine.
In some embodiments, the gear set is provided with a first stopping portion and a second stopping portion, the first bearing and the second bearing are located between the first stopping portion and the second stopping portion, an outer ring of the first bearing is stopped and limited by the first stopping portion, an outer ring of the second bearing is stopped and limited by the second stopping portion, an annular protrusion is arranged on the outer peripheral side of the sleeve body, the through holes penetrate through the annular protrusion, and the annular protrusion is clamped between an inner ring of the first bearing and an inner ring of the second bearing.
In some embodiments, the gear set comprises:
the transmission gear is sleeved on the outer peripheral side of the walking gear, the transmission gear is provided with a first tooth part, the walking gear is provided with a second tooth part, and the first tooth part and the second tooth part are arranged at intervals along the axial direction of the shaft body;
the first end cover is connected to one end of the walking gear, the second end cover is connected to the other end of the walking gear, the annular cavity is formed in a space defined by the first end cover, the second end cover and the walking gear, the first stopping portion is arranged on the first end cover, and the second stopping portion is arranged on the second end cover.
In some embodiments, the inner peripheral side of the first end cap is provided with a first sealing ring, and the first sealing ring is matched between the first end cap and the sleeve body to realize the rotary seal between the first end cap and the sleeve body;
and a second sealing ring is arranged on the inner peripheral side of the second end cover and is matched between the second end cover and the sleeve body to realize the rotary sealing between the second end cover and the sleeve body.
In some embodiments, the first blocking portion and the second blocking portion are both annular and located inside the traveling gear, a third sealing ring is disposed on an outer peripheral side of the first blocking portion, the third sealing ring is used for sealing between the first blocking portion and the traveling gear, a fourth sealing ring is disposed on an outer peripheral side of the second blocking portion, and the fourth sealing ring is used for sealing between the second blocking portion and the traveling gear.
In some embodiments, a groove width dimension of the annular groove is larger than a width dimension of the outlet of the first flow passage in an axial direction of the shaft body.
In some embodiments, the through-flow cross-section of each of the through-holes is greater than a set threshold and less than the through-flow cross-section of the first flow passage.
In some embodiments, the sleeve body is movable along an axial direction of the shaft body, and a projection of the first flow channel in a radial direction of the shaft body is always located within a range of a notch of the annular groove during movement of the sleeve body relative to the shaft body.
In some embodiments, the first flow passage includes a first hole section and a second hole section, the first hole section is disposed at a central position of the shaft body and extends along an axial direction of the shaft body, the second hole section extends along a radial direction of the shaft body, one end of the second hole section is communicated with the first hole section, and the outlet of the first flow passage is formed at the other end of the second hole section.
The coal mining machine provided by the embodiment of the invention comprises the walking wheel assembly for the coal mining machine in any embodiment.
Drawings
FIG. 1 is a schematic cross-sectional view of a road wheel assembly of an embodiment of the present invention.
Fig. 2 is a schematic view of the shaft body and the sleeve body in fig. 1.
Fig. 3 is a schematic illustration of the gear set of fig. 1.
Reference numerals are as follows:
a shaft body 1; a first flow passage 11; a first bore section 111; a second bore section 112;
a sleeve body 2; a second flow passage 21; ring groove 211; a through hole 212; an annular projection 22;
a gear set 3; a traveling gear 31; a second tooth portion 311; a transmission gear 32; the first tooth portion 321; a first end cap 33; a first stopper 331; a second end cap 34; a second blocking portion 341; a first seal ring 35; a second seal ring 36; a third seal ring 37; a fourth seal ring 38; an annular cavity 39;
a first bearing 4;
a second bearing 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 and 2, the walking wheel assembly for a coal cutter according to the embodiment of the present invention includes a shaft body 1, a sleeve body 2, a gear set 3, a first bearing 4, and a second bearing 5.
A first flow channel 11 is arranged in the shaft body 1, an outlet of the first flow channel 11 is positioned on the outer peripheral wall of the shaft body 1, and the first flow channel 11 is used for injecting lubricating liquid. As shown in fig. 2, the shaft body 1 may have a circular shaft shape, the inlet of the first flow passage 11 may be provided on the right end surface of the shaft body 1, and the outlet of the first flow passage 11 may be located on the outer circumferential wall of the shaft body 1. It should be noted that only one inlet of the first flow passage 11 may be provided, and a plurality of outlets of the first flow passage 11 may be provided.
The cover body 2 cover is established at the periphery side of axis body 1 and is rotatable for axis body 1, the cover body 2 is equipped with second runner 21, second runner 21 includes annular 211 and a plurality of through-hole 212, the internal perisporium of the cover body 2 is located to annular 211, the export of first runner 11 is relative and communicates with the notch of annular 211, and the export of first runner 11 can move in the within range of the notch of annular 211, the periphery side of annular 211 and arrange along the circumference interval of annular 211 are located to a plurality of through-holes 212, and every through-hole 212 all communicates with annular 211 and radially runs through the cover body 2 along the cover body 2.
For example, as shown in fig. 1 and 2, the covering body 2 may be in a shape of a circular tube, the covering body 2 may be sleeved on the outer periphery of the shaft body 1, the annular groove 211 may be formed on the inner peripheral wall of the covering body 2 and located at a middle position of the covering body 2, and the annular groove 211 may extend and close to the circumference of the covering body 2 to form a circle. Each through hole 212 may extend in a radial direction of the sleeve body 2, an inner end of each through hole 212 may be communicated with the groove bottom of the ring groove 211, and an outer end of each through hole 212 may be communicated with the outer circumferential wall of the sleeve body 2.
As shown in fig. 1, the gear set 3 is annular, the inner circumferential wall of the gear set 3 is provided with an annular cavity 39, the annular cavity 39 is provided with an opening, the opening of the annular cavity 39 faces the inner side of the gear set 3 and extends and closes along the circumferential direction of the annular cavity 39, the gear set 3 is rotatably fitted on the outer circumferential side of the case body 2, and the outlets of the plurality of through holes 212 communicate with the annular cavity 39.
The first bearing 4 and the second bearing 5 are both fitted in the annular chamber 39 and are used to achieve the rotational fitting of the gear set 3 and the housing body 2, the outlet of the plurality of through holes 212 being located between the first bearing 4 and the second bearing 5. For example, as shown in fig. 1, the first bearing 4 and the second bearing 5 are both installed in the annular cavity 39, the inner ring of the first bearing 4 may be in interference fit or fixed connection with the sleeve body 2, and the outer ring of the first bearing 4 may be in interference fit or fixed connection with the inner peripheral wall of the gear set 3; the inner ring of the second bearing 5 can be in interference fit or fixed connection with the sleeve body 2, and the outer ring of the second bearing 5 can be in interference fit or fixed connection with the inner peripheral wall of the gear set 3.
Preferably, the first bearing 4 and the second bearing 5 are both rolling bearings.
When the lubrication device is used, the sleeve body 2 can rotate relative to the shaft body 1, the gear set 3 can rotate relative to the sleeve body 2 under the action of the first bearing 4 and the second bearing 5, lubrication liquid can be injected through the first flow channel 11 and can flow into the annular groove 211 of the second flow channel 21, and then can flow into the annular cavity 39 through the through holes 212 under the action of centrifugal force and lubrication hydraulic pressure, so that the first bearing 4 and the second bearing 5 can be lubricated.
According to the walking wheel assembly for the coal mining machine, lubricating liquid can be supplied to the first bearing 4 and the second bearing 5 simultaneously through the first runner 11 and the second runner 21, and the second runner 21 is provided with the plurality of through holes 212, so that the lubricating liquid can be uniformly distributed at any position between the first bearing 4 and the second bearing 5, and the filling balance is guaranteed. Secondly, the annular cavity 39 can play a role in storing lubricating liquid, so that the lubricating liquid can perform a lubricating function more durably, the problem that the bearing generates heat due to unsmooth rotation is avoided, the problem that the fault rate of the travelling wheel assembly is frequent due to unsmooth lubrication is further avoided, the replacement period of the travelling wheel assembly is shortened (the time for replacing the travelling box is 12-15 hours), the running continuity of the coal mining machine is ensured, and the production efficiency is further ensured.
Owing to be provided with the cover body 2, the effect that strengthens structural strength can be played on the one hand to the cover body 2 to make the whole non-deformable of axis body 1 and the constitution of the cover body 2, thereby guaranteed first bearing 4 and 5 pivoted stabilities of second bearing, on the other hand the cover body 2 can rotate by oneself, make gear train 3's rotation more nimble, smooth and easy, made things convenient for gear train 3's rotation drive, can further reduce the fault rate and shorten the walking wheel and change the cycle. In addition, some structures that originally need set up on axis body 1 can set up on the cover body 2, and the cover body 2 is convenient for process and change, has made things convenient for the use.
In some embodiments, the gear set 3 is provided with a first stopping portion 331 and a second stopping portion 341, the first bearing 4 and the second bearing 5 are located between the first stopping portion 331 and the second stopping portion 341, the outer ring of the first bearing 4 is stopped and limited by the first stopping portion 331, the outer ring of the second bearing 5 is stopped and limited by the second stopping portion 341, the outer circumferential side of the sleeve body 2 is provided with an annular protrusion 22, the plurality of through holes 212 penetrate through the annular protrusion 22, and the annular protrusion 22 is sandwiched between the inner ring of the first bearing 4 and the inner ring of the second bearing 5.
As shown in fig. 3, the first stopper 331 may be connected to the left wall of the annular cavity 39 and extend to the right, and the second stopper 341 may be connected to the right wall of the annular cavity 39 and extend to the left. The first stopper portion 331 and the second stopper portion 341 are located in the annular cavity 39 and are arranged at intervals in the left-right direction. The first bearing 4 and the second bearing 5 are sandwiched between the first stopping portion 331 and the second stopping portion 341, wherein the left side of the outer ring of the first bearing 4 is in stopping fit with the first stopping portion 331, and the right side of the outer ring of the second bearing 5 is in stopping fit with the second stopping portion 341.
As shown in fig. 2, the annular protrusion 22 may be disposed on the outer periphery of the sleeve body 2 and integrally formed with the sleeve body 2, and when assembled, the left side of the annular protrusion 22 may be engaged with the right side of the inner ring of the first bearing 4 in a stop manner, and the right side of the annular protrusion 22 may be engaged with the left side of the inner ring of the second bearing 5 in a stop manner.
Therefore, the first bearing 4 can be limited between the first stopping portion 331 and the annular protrusion 22, and the second bearing 5 can be limited between the second stopping portion 341 and the annular protrusion 22, so that the limited assembly of the first bearing 4 and the second bearing 5 is realized, and the assembly compactness of the first bearing 4 and the second bearing 5 is ensured. In addition, only one side of the inner ring and the outer ring of the first bearing 4 and the second bearing 5 is limited by the stop, and the first bearing 4 and the second bearing 5 can have a certain deformation, so that the first bearing 4 and the second bearing 5 can be adaptively adjusted according to needs in the operation process, and the failure rate of the bearings can be further reduced.
In some embodiments, the gear set 3 includes a walking gear 31, a transmission gear 32, a first end cover 33 and a second end cover 34, the walking gear 31 and the transmission gear 32 are connected and can synchronously rotate, the transmission gear 32 is sleeved on the outer peripheral side of the walking gear 31, the transmission gear 32 is provided with a first tooth portion 321, the walking gear 31 is provided with a second tooth portion 311, and the first tooth portion 321 and the second tooth portion 311 are arranged at intervals along the axial direction of the shaft body 1; the first end cap 33 is connected to one end of the traveling gear 31, the second end cap 34 is connected to the other end of the traveling gear 31, the annular cavity 39 is formed in a space surrounded by the first end cap 33, the second end cap 34 and the traveling gear 31, the first stopping portion 331 is disposed on the first end cap 33, and the second stopping portion 341 is disposed on the second end cap 34.
For example, as shown in fig. 1, the transmission gear 32 may be fitted on the outer peripheral side of the traveling gear 31 by fitting of a key and a key groove, the first tooth portion 321 may be provided on the outer peripheral side of the traveling gear 31 and provided with one turn along the circumferential direction of the traveling gear 31, the second tooth portion 311 may be provided on the outer peripheral side of the transmission gear 32 and provided with one turn along the circumferential direction of the transmission gear 32, wherein the first tooth portion 321 may be located on the right side of the second tooth portion 311 and arranged at a distance from the second tooth portion 311.
The first end cover 33 may be fixed to the left side of the traveling gear 31 by a fastener such as a bolt, and the second end cover 34 may be fixed to the right side of the traveling gear 31 by a fastener such as a bolt. The annular chamber 39 is located inside the running gear 31 and between the first end cap 33 and the second end cap 34.
The first stop portion 331 can be integrally formed on the first end cap 33, and after the first end cap 33 and the traveling gear 31 are fixed, the outer surface of the first stop portion 331 can be attached to the inner peripheral wall of the traveling gear 31. The second blocking portion 341 may be integrally formed with the second end cap 34, and when the second end cap 34 and the traveling gear 31 are fixed, an outer surface of the second blocking portion 341 may be attached to an inner circumferential wall of the traveling gear 31. Thereby, compactness and sealing of the assembly of the gear unit 3 can be ensured.
In some embodiments, the inner peripheral side of the first end cap 33 is provided with a first sealing ring 35, the first sealing ring 35 being fitted between the first end cap 33 and the jacket body 2 to achieve a rotary seal between the first end cap 33 and the jacket body 2; the second end cap 34 is provided at its inner peripheral side with a second sealing ring 36, the second sealing ring 36 being fitted between the second end cap 34 and the jacket body 2 to effect a rotary seal between the second end cap 34 and the jacket body 2.
For example, as shown in fig. 1, the first end cap 33 and the second end cap 34 are both annular, the first end cap 33 surrounds the outer periphery of the jacket body 2, an annular fitting groove may be provided on an inner peripheral wall of the first end cap 33 for fitting to the outer peripheral surface of the jacket body 2, and the first seal ring 35 may be fitted in the fitting groove. Similarly, the second sealing ring 36 can also be inserted in the mounting groove of the second end cap 34 and achieve a rotating sealing assembly with the jacket body 2.
From this, can be so that annular chamber 39 can be for sealed chamber, avoid revealing of lubricated liquid in the annular chamber 39 on the one hand, be favorable to the effect of extension lubricated liquid long, on the other hand also can play the effect of blockking external impurity, has avoided the circumstances in coal dust, particulate matter etc. entering annular chamber 39, can further reduce the fault rate of first bearing 4 and second bearing 5 and prolong the change cycle of walking wheel subassembly.
In some embodiments, the first blocking portion 331 and the second blocking portion 341 are annular and located in the traveling gear 31, a third sealing ring 37 is disposed on an outer peripheral side of the first blocking portion 331, the third sealing ring 37 is used for sealing between the first blocking portion 331 and the traveling gear 31, a fourth sealing ring 38 is disposed on an outer peripheral side of the second blocking portion 341, and the fourth sealing ring 38 is used for sealing between the second blocking portion 341 and the traveling gear 31.
For example, as shown in fig. 1, each of the first stopper 331 and the second stopper 341 may be substantially cylindrical, and the first stopper 331 may be inserted into the inner hole of the travel gear 31 from the left side and the second stopper 341 may be inserted into the inner hole of the travel gear 31 from the right side during assembly.
An annular assembly groove may be formed on an outer wall surface of the first stopper 331, and the third sealing ring 37 may be fitted into the assembly groove of the first stopper 331, so that the first stopper 331 and the traveling gear 31 may be sealed. An annular assembly groove may be formed on an outer wall surface of the second blocking portion 341, and the fourth packing 38 may be fitted in the assembly groove of the second blocking portion 341, so that sealing between the second blocking portion 341 and the traveling gear 31 may be achieved. Leakage of the lubricating fluid in the annular chamber 39 is further avoided, as is the case of impurities entering the annular chamber 39.
In some embodiments, the groove width dimension of the ring groove 211 is larger than the width dimension of the outlet of the first flow passage 11 in the axial direction of the shaft body 1. For example, as shown in fig. 2, the axial direction of the shaft body 1 is the left-right direction, and the groove width dimension of the ring groove 211 in the left-right direction is larger than the width dimension of the outlet of the first flow passage 11. This allows the lubricating liquid flowing out from the outlet of the first flow passage 11 to flow completely into the ring groove 211.
In some embodiments, the through-flow cross-section of each through-hole 212 is greater than a set threshold and smaller than the through-flow cross-section of the first flow channel 11. For example, as shown in fig. 2, both the through hole 212 and the first flow channel 11 may be circular holes, and the radial dimension of the through hole 212 may be smaller than the radial dimension of the first flow channel 11. Because the through-hole 212 has a plurality ofly for the demand of the volume of the lubricated liquid in the first flow path 11 can satisfy to a plurality of through-holes 212 distribution lubricated liquid, has avoided the through-flow cross-section of through-hole 212 great and has caused the condition that can't let in lubricated liquid in some through-holes 212 easily, is favorable to the evenly distributed of lubricated liquid, thereby has guaranteed the lubrication in each position of first bearing 4 and second bearing 5.
In addition, the set threshold may be a specific parameter value determined after test simulation, for example, the specific parameter value may be 5 mm or more, at this time, the aperture of the through hole 212 is large, which may avoid the situation that the first flow passage 11 or the second flow passage 21 is blocked by oil sludge generated after the bearing operates, and further ensure the smoothness of the oil passage.
In some embodiments, the jacket body 2 is movable in the axial direction of the shaft body 1, and a projection of the first flow channel 11 in the radial direction of the shaft body 1 is always located within a range of a notch of the annular groove 211 during the movement of the jacket body 2 relative to the shaft body 1. For example, in order to improve the flexibility of use and allow the sheath body 2 to be adjusted adaptively when a corresponding force is applied, the sheath body 2 may be moved in a small range in the left-right direction with respect to the shaft body 1. However, in the moving process of the sleeve body 2, the outlet of the first flow passage 11 is always located in the outline range of the notch of the annular groove, so that the communication area between the first flow passage 11 and the annular groove is ensured, and further the stable conveying of the lubricating liquid is ensured.
In other embodiments, one of the inner peripheral wall of the sleeve body 2 and the outer peripheral wall of the shaft body 1 may be provided with a limiting groove, and the other may be provided with a limiting portion which can be fitted in the limiting groove, thereby limiting the relative movement amount of the sleeve body 2 and the shaft body 1 in the left-right direction. It can be understood that, in other embodiments, the left end and the right end of the sleeve body 2 can be provided with independent stop structures, so as to limit the axial displacement of the sleeve body 2.
In some embodiments, the first flow channel 11 includes a first hole section 111 and a second hole section 112, the first hole section 111 is disposed at a central position of the shaft body 1 and extends along an axial direction of the shaft body 1, the second hole section 112 extends along a radial direction of the shaft body 1, one end of the second hole section 112 is communicated with the first hole section 111, and an outlet of the first flow channel 11 is formed at the other end of the second hole section 112. For example, as shown in fig. 2, the first hole section 111 may also extend substantially along the axis of the shaft body 1, and the second hole section 112 may extend substantially in a direction perpendicular to the axis of the shaft body 1. This facilitates, on the one hand, the arrangement of the first flow duct 11 and, on the other hand, the shaping of the first flow duct 11.
In other embodiments, the second hole segment 112 may be provided in a plurality, and the plurality of second hole segments 112 may be arranged at equal intervals along the circumference of the first hole segment 111. Thereby, a uniform distribution of the lubricating liquid into the annular groove is made possible.
A shearer loader according to an embodiment of the present invention is described below.
The coal mining machine provided by the embodiment of the invention comprises the travelling wheel assembly, and the travelling wheel assembly can be the travelling wheel assembly for the coal mining machine described in the embodiment. The walking wheel assembly of the coal mining machine provided by the embodiment of the invention has low failure rate, and the production continuity and production efficiency of the coal mining machine are ensured.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although the above embodiments have been shown and described, it should be understood that they are exemplary and not intended to limit the invention, and that various changes, modifications, substitutions and alterations can be made herein by those skilled in the art without departing from the scope of the invention.
Claims (10)
1. A walking wheel assembly for a coal mining machine, comprising:
the lubricating device comprises a shaft body, wherein a first flow channel is arranged in the shaft body, an outlet of the first flow channel is positioned on the peripheral wall of the shaft body, and the first flow channel is used for injecting lubricating liquid;
the sleeve body is sleeved on the periphery side of the shaft body and can rotate relative to the shaft body, the sleeve body is provided with a second flow channel, the second flow channel comprises an annular groove and a plurality of through holes, the annular groove is formed in the inner peripheral wall of the sleeve body, an outlet of the first flow channel is opposite to and communicated with a notch of the annular groove, the outlet of the first flow channel can move in the range of the notch of the annular groove, the through holes are formed in the periphery side of the annular groove and are distributed along the circumferential direction of the annular groove at intervals, and each through hole is communicated with the annular groove and penetrates through the sleeve body along the radial direction of the sleeve body;
the gear set is annular, an annular cavity is formed in the inner peripheral wall of the gear set, the gear set is rotatably assembled on the outer peripheral side of the sleeve body, and outlets of the through holes are communicated with the annular cavity;
the first bearing and the second bearing are assembled in the annular cavity and are used for achieving the rotating assembly of the gear set and the sleeve body, and outlets of the through holes are located between the first bearing and the second bearing.
2. The running wheel assembly for the coal mining machine according to claim 1, wherein the gear set is provided with a first stopping portion and a second stopping portion, the first bearing and the second bearing are located between the first stopping portion and the second stopping portion, an outer ring of the first bearing is stopped and limited by the first stopping portion, an outer ring of the second bearing is stopped and limited by the second stopping portion, an annular protrusion is arranged on an outer peripheral side of the sleeve body, the plurality of through holes penetrate through the annular protrusion, and the annular protrusion is clamped between an inner ring of the first bearing and an inner ring of the second bearing.
3. The walking wheel assembly for a coal cutter of claim 2, wherein the gear set comprises:
the transmission gear is sleeved on the outer peripheral side of the walking gear, the transmission gear is provided with a first tooth part, the walking gear is provided with a second tooth part, and the first tooth part and the second tooth part are arranged at intervals along the axial direction of the shaft body;
the first end cover is connected to one end of the walking gear, the second end cover is connected to the other end of the walking gear, the annular cavity is formed in a space defined by the first end cover, the second end cover and the walking gear, the first stopping portion is arranged on the first end cover, and the second stopping portion is arranged on the second end cover.
4. The running wheel assembly for the coal mining machine according to claim 3, wherein a first sealing ring is arranged on the inner peripheral side of the first end cover, and the first sealing ring is matched between the first end cover and the sleeve body to realize rotary sealing between the first end cover and the sleeve body;
and a second sealing ring is arranged on the inner peripheral side of the second end cover and is matched between the second end cover and the sleeve body to realize the rotary sealing between the second end cover and the sleeve body.
5. The running wheel assembly for the coal mining machine according to claim 3, wherein the first blocking portion and the second blocking portion are both annular and are located in the running gear, a third sealing ring is arranged on the outer peripheral side of the first blocking portion and used for sealing between the first blocking portion and the running gear, a fourth sealing ring is arranged on the outer peripheral side of the second blocking portion and used for sealing between the second blocking portion and the running gear.
6. The running wheel assembly for a coal cutter according to claim 1, wherein a groove width dimension of the ring groove is larger than a width dimension of the outlet of the first flow passage in an axial direction of the shaft body.
7. The running wheel assembly for a coal mining machine according to claim 6, wherein a flow cross section of each through hole is greater than a set threshold and less than a flow cross section of the first flow passage.
8. The running wheel assembly for a coal mining machine according to claim 6, wherein the jacket body is movable in an axial direction of the shaft body, and a projection of the first flow channel in a radial direction of the shaft body is always located within a range of a notch of the annular groove during movement of the jacket body relative to the shaft body.
9. The road wheel assembly for a coal mining machine according to any one of claims 1 to 8, wherein the first flow passage includes a first hole section and a second hole section, the first hole section is provided at a central position of the shaft body and extends in an axial direction of the shaft body, the second hole section extends in a radial direction of the shaft body, one end of the second hole section is communicated with the first hole section, and an outlet of the first flow passage is formed at the other end of the second hole section.
10. A coal mining machine comprising a travelling wheel assembly for a coal mining machine according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211122177.XA CN115506792A (en) | 2022-09-15 | 2022-09-15 | Walking wheel assembly for coal mining machine and coal mining machine |
| PCT/CN2023/116517 WO2024055850A1 (en) | 2022-09-15 | 2023-09-01 | Traveling wheel assembly for coal mining machine, and coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211122177.XA CN115506792A (en) | 2022-09-15 | 2022-09-15 | Walking wheel assembly for coal mining machine and coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115506792A true CN115506792A (en) | 2022-12-23 |
Family
ID=84503251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211122177.XA Pending CN115506792A (en) | 2022-09-15 | 2022-09-15 | Walking wheel assembly for coal mining machine and coal mining machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115506792A (en) |
| WO (1) | WO2024055850A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055850A1 (en) * | 2022-09-15 | 2024-03-21 | 扎赉诺尔煤业有限责任公司 | Traveling wheel assembly for coal mining machine, and coal mining machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205277417U (en) * | 2015-12-24 | 2016-06-01 | 林州重机集团股份有限公司 | Coal -winning machine running gear |
| CA3012831A1 (en) * | 2016-01-27 | 2017-08-03 | Joy Global Underground Mining Llc | Mining machine with multiple cutter heads |
| RU2754529C2 (en) * | 2016-09-23 | 2021-09-03 | ДЖОЙ ГЛОБАЛ АНДЕРГРАУНД МАЙНИНГ ЭлЭлСи | Device for cutting rock |
| CN212155735U (en) * | 2020-03-28 | 2020-12-15 | 天地科技股份有限公司上海分公司 | Forced lubricating system for rocker arm of high-power coal mining machine |
| CN212716606U (en) * | 2020-06-19 | 2021-03-16 | 常州天山重工机械有限公司 | Traveling mechanism |
| CN216045343U (en) * | 2021-08-26 | 2022-03-15 | 惠州比亚迪电池有限公司 | Gear box and vehicle with same |
| CN115506792A (en) * | 2022-09-15 | 2022-12-23 | 扎赉诺尔煤业有限责任公司 | Walking wheel assembly for coal mining machine and coal mining machine |
-
2022
- 2022-09-15 CN CN202211122177.XA patent/CN115506792A/en active Pending
-
2023
- 2023-09-01 WO PCT/CN2023/116517 patent/WO2024055850A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055850A1 (en) * | 2022-09-15 | 2024-03-21 | 扎赉诺尔煤业有限责任公司 | Traveling wheel assembly for coal mining machine, and coal mining machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024055850A1 (en) | 2024-03-21 |
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