WO2024055850A1 - 采煤机用行走轮组件和采煤机 - Google Patents

采煤机用行走轮组件和采煤机 Download PDF

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Publication number
WO2024055850A1
WO2024055850A1 PCT/CN2023/116517 CN2023116517W WO2024055850A1 WO 2024055850 A1 WO2024055850 A1 WO 2024055850A1 CN 2023116517 W CN2023116517 W CN 2023116517W WO 2024055850 A1 WO2024055850 A1 WO 2024055850A1
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WO
WIPO (PCT)
Prior art keywords
bearing
sleeve body
flow channel
gear
shaft body
Prior art date
Application number
PCT/CN2023/116517
Other languages
English (en)
French (fr)
Inventor
刘东来
Original Assignee
扎赉诺尔煤业有限责任公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 扎赉诺尔煤业有限责任公司 filed Critical 扎赉诺尔煤业有限责任公司
Publication of WO2024055850A1 publication Critical patent/WO2024055850A1/zh

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Classifications

    • 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
    • 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
    • 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

Definitions

  • the present disclosure relates to the technical field of mining equipment, and specifically to a traveling wheel assembly for a coal shearer and a coal shearer.
  • the shearer is one of the main equipment in fully mechanized mining, and it is mainly used to cut the coal wall.
  • the shearer includes a cutting part, a walking part, a loading part, etc.
  • the walking part is mainly used to move the shearer, so that the shearer can complete cutting of coal walls at different locations.
  • the failure rate of the traveling part is relatively high, which reduces the production efficiency of the shearer.
  • the embodiments of the present disclosure aim to solve one of the technical problems in the related art, at least to a certain extent.
  • an embodiment of the first aspect of the present disclosure proposes a traveling wheel assembly for a coal mining machine, which has a low failure rate, reduces the replacement cycle of the traveling box, and ensures the production efficiency of the coal mining machine.
  • An embodiment of the second aspect of the present disclosure also provides a coal shearer using the above traveling wheel assembly for a coal shearer.
  • the shaft body is provided with a first flow channel, the outlet of the first flow channel is located on the outer peripheral wall of the shaft body, and the first flow channel is used to inject lubricating fluid;
  • the sleeve body is sleeved on the outer peripheral side of the shaft body and is rotatable relative to the shaft body.
  • the sleeve body is provided with a second flow channel, and the second flow channel includes an annular groove and a plurality of Through hole, the annular groove is provided on the inner peripheral wall of the sleeve body, the outlet of the first flow channel is opposite to and connected with the notch of the annular groove, and the outlet of the first flow channel can be in
  • the annular groove moves within the range of the slot opening, a plurality of the through holes are provided on the outer peripheral side of the annular groove and are arranged at intervals along the circumferential direction of the annular groove, and each of the through holes All are connected with the annular groove and penetrate the sleeve body along the radial direction of the sleeve body;
  • the gear set is annular, and the inner peripheral wall of the gear set is provided with an annular cavity.
  • the gear set is rotatably assembled on the outer peripheral side of the sleeve body, and the outlets of the plurality of through holes are connected with the The annular cavities are connected;
  • a first bearing and a second bearing are both assembled in the annular cavity and used to realize the rotation assembly of the gear set and the sleeve body.
  • a plurality of through holes are The outlet is located between the first bearing and the between the second bearings.
  • the traveling wheel assembly for a coal shearer has a low failure rate, shortens the replacement cycle of the traveling box, and ensures the production efficiency of the coal shearer.
  • the gear set is provided with a first stop portion and a second stop portion, and the first bearing and the second bearing are located at the first stop portion and the second stop portion. between the parts, and the outer ring of the first bearing is blocked and limited by the first blocking part, and the outer ring of the second bearing is blocked and limited by the second blocking part, and the sleeve
  • An annular protrusion is provided on the outer peripheral side of the body, and a plurality of through holes pass through the annular protrusion. The annular protrusion is sandwiched between the inner ring of the first bearing and the inner ring of the second bearing. .
  • the gear set includes:
  • a traveling gear and a transmission gear The traveling gear is connected to the transmission gear and can rotate synchronously.
  • the transmission gear is sleeved on the outer peripheral side of the traveling gear.
  • the transmission gear is provided with a first tooth portion.
  • the traveling gear is provided with a second tooth portion, and the first tooth portion and the second tooth portion are arranged at intervals along the axial direction of the shaft body;
  • a first end cover and a second end cover the first end cover is connected to one end of the traveling gear, the second end cover is connected to the other end of the traveling gear, and the annular cavity is formed in the third end cover.
  • the first stopper is provided on the first end cover, and the second stopper is provided on the third end cover.
  • a first sealing ring is provided on the inner circumferential side of the first end cap, and the first sealing ring is fitted between the first end cap and the sleeve body to achieve the first Rotary seal between the end cap and the sleeve body;
  • a second sealing ring is provided on the inner circumferential side of the second end cap, and the second sealing ring is fitted between the second end cap and the sleeve body to realize the connection between the second end cap and the sleeve body.
  • the first stop part and the second stop part are annular and both are located in the traveling gear, and a third sealing ring is provided on the outer peripheral side of the first stop part, The third sealing ring is used to achieve sealing between the first stopper and the traveling gear.
  • a fourth sealing ring is provided on the outer peripheral side of the second stopper. The fourth sealing ring is used to achieve sealing. Seal between the second stopper and the traveling gear.
  • a groove width dimension of the annular groove is greater than a width dimension of the outlet of the first flow channel.
  • the flow cross section of each through hole is greater than a set threshold and smaller than the flow cross section of the first flow channel.
  • the sleeve is movable along the axial direction of the shaft body, and during the movement of the sleeve relative to the shaft body, the projection of the first flow channel in the radial direction of the shaft body is always located within the range of the notch of the annular groove.
  • the first flow channel includes a first hole section and a second hole section, and the first hole section is provided on the shaft.
  • the center position of the body extends along the axial direction of the shaft body, the second hole segment extends along the radial direction of the shaft body, and one end of the second hole segment is connected with the first hole segment , the outlet of the first flow channel is formed at the other end of the second hole section.
  • the coal shearer in the embodiment of the present disclosure includes the traveling wheel assembly for the coal shearer as described in any embodiment of the first aspect.
  • FIG. 1 is a schematic cross-sectional view of a traveling wheel assembly according to an embodiment of the present disclosure.
  • FIG. 2 is a schematic diagram of the shaft body and the sleeve body in FIG. 1 .
  • Figure 3 is a schematic diagram of the gear set in Figure 1.
  • the traveling wheel assembly for a coal shearer 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 provided in the shaft body 1.
  • the outlet of the first flow channel 11 is located on the outer peripheral wall of the shaft body 1, and the first flow channel 11 is used for injecting lubricating fluid.
  • the shaft body 1 can be in the shape of a circular shaft.
  • the inlet of the first flow channel 11 can be located on the right end face of the shaft body 1 , and the outlet of the first flow channel 11 can be located on the outer peripheral wall of the shaft body 1 . It should be noted that there may be only one inlet of the first flow channel 11 , and there may be multiple outlets of the first flow channel 11 .
  • the sleeve body 2 is sleeved on the outer peripheral side of the shaft body 1 and is rotatable relative to the shaft body 1.
  • the sleeve body 2 is provided with a second flow channel 21.
  • the second flow channel 21 includes an annular groove 211 and a plurality of through holes 212.
  • the annular groove 211 is provided on the inner peripheral wall of the sleeve body 2.
  • the outlet of the first flow channel 11 is opposite to and connected with the notch of the annular groove 211, and the outlet of the first flow channel 11 can move within the range of the notch of the annular groove 211.
  • the holes 212 are provided on the outer peripheral side of the annular groove 211 and are arranged at intervals along the circumferential direction of the annular groove 211 . Each through hole 212 is connected with the annular groove 211 and penetrates the sleeve body 2 along the radial direction of the sleeve body 2 .
  • the sleeve body 2 can be in the shape of a circular tube, the sleeve body 2 can be sleeved on the outer peripheral side of the shaft body 1, and the annular groove 211 can be provided on the inner peripheral wall of the sleeve body 2 and located at At the middle position of the sleeve body 2, the annular groove 211 can extend and close in a circle along the circumferential direction of the sleeve body 2.
  • Each through hole 212 can extend along the radial direction of the sleeve body 2 , the inner end of each through hole 212 can communicate with the bottom of the annular groove 211 , and the outer end of each through hole 212 can communicate with the outer periphery of the sleeve body 2 The wall runs through.
  • the gear set 3 is annular, and the inner peripheral 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 inside of the gear set 3 and along the edge of the annular cavity 39.
  • the gear set 3 is extended and closed in the circumferential direction, and the gear set 3 is rotatably assembled on the outer peripheral side of the sleeve body 2 .
  • the outlets of the plurality of through holes 212 are connected with the annular cavity 39 .
  • the first bearing 4 and the second bearing 5 are both assembled in the annular cavity 39 and are used to realize the rotation assembly of the gear set 3 and the sleeve 2 .
  • the outlets of the plurality of through holes 212 are located between the first bearing 4 and the second bearing 5 .
  • both the first bearing 4 and the second bearing 5 are installed in the annular cavity 39, and the inner ring of the first bearing 4 can be interference-fitted or fixedly connected with the sleeve body 2.
  • the outer ring of the bearing 4 can be an 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 an interference fit or fixed connection with the sleeve body 2, and the outer ring of the second bearing 5 can be an interference fit or fixed connection with the gear set.
  • the inner peripheral walls of 3 are interference-fitted or fixedly connected.
  • both the first bearing 4 and the second bearing 5 are rolling bearings.
  • the sleeve body 2 When in use, 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, and the lubricating liquid can be injected through the first flow channel 11 and can flow into The annular groove 211 of the second flow channel 21 can then flow into the annular cavity 39 through the plurality of through holes 212 under the action of centrifugal force and lubricating fluid pressure, so that the first bearing 4 and the second bearing 5 can be lubricated.
  • the traveling wheel assembly for a coal shearer can simultaneously supply lubricating fluid to the first bearing 4 and the second bearing 5 through the first flow channel 11 and the second flow channel 21.
  • the second flow channel 21 is provided with multiple The through holes 212 can make the lubricating fluid evenly distributed at any position between the first bearing 4 and the second bearing 5, thus ensuring the balance of filling.
  • the annular cavity 39 can play the role of storing lubricating fluid, so that the lubricating fluid can lubricate for a longer period of time, thereby avoiding the problem of bearing heating caused by poor rotation, and thus avoiding the problem of bearing heating due to poor lubrication.
  • the frequent component failure rate shortens the replacement cycle of the traveling wheel assembly (the time to replace the traveling box is 12-15 hours), ensuring the continuity of the shearer operation and thus ensuring production efficiency.
  • the sleeve body 2 can enhance the structural strength on the one hand, so that the whole body composed of the shaft body 1 and the sleeve body 2 is not easily deformed, thus ensuring the rotation of the first bearing 4 and the second bearing 5. Stability, on the other hand, the sleeve body 2 can rotate by itself, making the rotation of the gear set 3 more flexible and smooth, which facilitates the rotational driving of the gear set 3, which can further reduce the failure rate and shorten the replacement cycle of the walking wheel.
  • some structures that originally need to be arranged on the shaft body 1 can be arranged on the sleeve body 2, and the sleeve body 2 is easy to process and replace, and is convenient to use.
  • the gear set 3 is provided with a first stop 331 and a second stop 341 , and the first bearing 4 and the second bearing 5 are located between the first stop 331 and the second stop 341 , and the outer ring of the first bearing 4 passes through the first stop 331 is blocked and limited, and the outer ring of the second bearing 5 is blocked and limited by the second blocking part 341.
  • the outer peripheral side of the sleeve body 2 is provided with an annular protrusion 22, and a plurality of through holes 212 pass through the annular protrusion 22.
  • the annular protrusion 22 is sandwiched between the inner rings of the first bearing 4 and the second bearing 5 .
  • the first stopper 331 can be connected with the left wall of the annular cavity 39 and extend to the right
  • the second stopper 341 can be connected with the right wall of the annular cavity 39 and extend to the left.
  • the first stopper 331 and the second stopper 341 are both located in the annular cavity 39 and are spaced apart in the left-right direction.
  • the first bearing 4 and the second bearing 5 are sandwiched between the first stop part 331 and the second stop part 341, wherein the left side of the outer ring of the first bearing 4 stops and cooperates with the first stop part 331.
  • the right side of the outer ring of the second bearing 5 stops and cooperates with the second stopper 341 .
  • the annular protrusion 22 can be provided on the outer peripheral side of the sleeve body 2 and integrally formed with the sleeve body 2. During assembly, the left side of the annular protrusion 22 can block the right side of the inner ring of the first bearing 4. The right side of the annular protrusion 22 can stop fitting with the left side of the inner ring of the second bearing 5 .
  • the first bearing 4 will be limited between the first stopper 331 and the annular protrusion 22, and the second bearing 5 will be limited between the second stopper 341 and the annular protrusion 22, thus achieving alignment.
  • the limiting assembly of the first bearing 4 and the second bearing 5 ensures the compactness of the assembly of the first bearing 4 and the second bearing 5 .
  • the first bearing 4 and the second bearing 5 can have a certain amount of deformation, so that the first bearing 4 and the second bearing 5 can have a certain amount of deformation.
  • the second bearing 5 can be adaptively adjusted as needed during operation, which can further reduce the failure rate of the bearing.
  • the gear set 3 includes a traveling gear 31, a transmission gear 32, a first end cover 33 and a second end cover 34.
  • the traveling gear 31 and the transmission gear 32 are connected and can rotate synchronously.
  • the transmission gear 32 is sleeved on the traveling gear.
  • the transmission gear 32 is provided with a first tooth portion 321, and the traveling gear 31 is provided with a second tooth portion 311.
  • the first tooth portion 321 and the second tooth portion 311 are spaced apart along the axial direction of the shaft body 1;
  • the first end cover 33 is connected to one end of the traveling gear 31
  • the second end cover 34 is connected to the other end of the traveling gear 31
  • an annular cavity 39 is formed between the first end cover 33 , the second end cover 34 and the traveling gear 31
  • the first stopper 331 is provided on the first end cover 33
  • the second stopper 341 is provided on the second end cover 34 .
  • the transmission gear 32 can be assembled on the outer circumferential side of the traveling gear 31 through the cooperation of keys and keyways to prevent rotation, and the first tooth portion 321 can be provided on the outer circumferential side of the traveling gear 31 and along the
  • the running gear 31 is provided with a circle in the circumferential direction
  • the second tooth portion 311 can be provided on the outer peripheral side of the transmission gear 32 and is provided with a circle along the circumference of the transmission gear 32 , wherein the first tooth portion 321 can be located at the second tooth portion 311 on the right side and spaced apart from the second tooth portion 311 .
  • the first end cover 33 can be fixed on the left side of the traveling gear 31 through fasteners such as bolts, and the second end cover 34 can also be fixed on the right side of the traveling gear 31 through fasteners such as bolts.
  • the annular cavity 39 is located inside the traveling gear 31 and between the first end cover 33 and the second end cover 34 .
  • the first stopper 331 can be integrally formed on the first end cover 33 .
  • the second stopper 341 can be integrally formed on the second end cover 34 .
  • the outer surface of the second stopper 341 can fit into the inner peripheral wall of the travel gear 31 . Therefore, the compactness and sealing performance of the assembly of the gear set 3 can be ensured.
  • a first sealing ring 35 is provided on the inner circumferential side of the first end cover 33 , and the first sealing ring 35 is fitted between the first end cover 33 and the sleeve body 2 to realize the connection between the first end cover 33 and the sleeve body 2 .
  • the second end cover 34 is provided with a second sealing ring 36 on the inner circumferential side, and the second sealing ring 36 is matched between the second end cover 34 and the sleeve body 2 to realize the second end cover 34 and the rotary seal between the sleeve body 2.
  • both the first end cap 33 and the second end cap 34 are annular.
  • the first end cap 33 surrounds the outer peripheral side of the sleeve body 2 and is used to connect with the sleeve body.
  • An annular assembly groove may be provided on the inner peripheral wall of the outer peripheral surface of the body 2, and the first sealing ring 35 may be embedded in the assembly groove.
  • the second sealing ring 36 can also be embedded in the assembly groove of the second end cover 34 and achieve rotational sealing assembly with the sleeve body 2 .
  • the annular cavity 39 can be a sealed cavity. On the one hand, it avoids the leakage of the lubricating fluid in the annular cavity 39, which is beneficial to prolonging the action time of the lubricating fluid. On the other hand, it can also play a role in blocking external impurities and avoid If coal dust, particulate matter, etc. enter the annular cavity 39, the failure rate of the first bearing 4 and the second bearing 5 can be further reduced and the replacement cycle of the walking wheel assembly can be extended.
  • the first stop part 331 and the second stop part 341 are annular and both are located in the traveling gear 31 .
  • a third sealing ring 37 is provided on the outer circumferential side of the first stop part 331 .
  • the ring 37 is used to achieve sealing between the first stopper 331 and the traveling gear 31.
  • a fourth sealing ring 38 is provided on the outer peripheral side of the second stopper 341. The fourth sealing ring 38 is used to achieve the second stopper. 341 and the seal between the traveling gear 31.
  • both the first stopper 331 and the second stopper 341 can be generally cylindrical.
  • the first stopper 331 can be inserted into the traveling gear 31 from the left side.
  • the second stopper 341 can be inserted into the inner hole of the traveling gear 31 from the right side.
  • An annular assembly groove can be provided on the outer wall surface of the first stopper 331, and the third sealing ring 37 can be embedded in the assembly groove of the first stopper 331, so that the first stopper 331 and the traveling gear can be connected. 31 between seals.
  • An annular assembly groove can be provided on the outer wall surface of the second stopper 341, and the fourth sealing ring 38 can be embedded in the assembly groove of the second stopper 341, so that the second stopper 341 and the traveling gear can be connected. 31 between seals. This further avoids the leakage of lubricating fluid in the annular cavity 39 and prevents impurities from entering the annular cavity 39 .
  • the groove width of the annular groove 211 is greater than the width of the outlet of the first flow channel 11 .
  • the axial direction of the shaft 1 is the left-right direction, and the width of the annular groove 211 in the left-right direction is greater than the width of the outlet of the first flow channel 11 . Therefore, the lubricating liquid flowing out from the outlet of the first flow channel 11 can completely flow into the annular groove 211 .
  • each through hole 212 is greater than the set threshold and smaller than the flow cross section of the first flow channel 11 .
  • both the through hole 212 and the first flow channel 11 may be circular holes, and the radial size of the through hole 212 may be smaller than the radial size of the first flow channel 11 . Since there are multiple through holes 212 , the amount of lubricating fluid in the first flow channel 11 can meet the requirement of distributing lubricating fluid to the multiple through holes 212 , thus avoiding partial through holes caused by the large flow cross section of the through holes 212 . The fact that the lubricating fluid cannot be introduced into 212 is beneficial to the even distribution of the lubricating fluid, thereby ensuring the lubrication of each position of the first bearing 4 and the second bearing 5 .
  • the set threshold can be a specific parameter value determined after experimental simulation. In some embodiments, it can be more than 5 mm. At this time, the diameter of the through hole 212 is larger, which can avoid the generation of sludge after the bearing is operated and the second If the first flow channel 11 or the second flow channel 21 is blocked, the smoothness of the oil path is further ensured.
  • the sleeve body 2 is movable along the axial direction of the shaft body 1 , and during the movement of the sleeve body 2 relative to the shaft body 1 , the projection of the first flow channel 11 in the radial direction of the shaft body 1 is always Located within the range of the notch of the annular groove 211.
  • the sleeve body 2 in order to improve the flexibility of use, so that the sleeve body 2 can be adaptively adjusted when receiving corresponding forces, the sleeve body 2 can be adjusted within a smaller range in the left and right directions relative to the shaft body 1. of movement.
  • the outlet of the first flow channel 11 is always located within the contour range of the notch of the annular groove, ensuring the communication area between the first flow channel 11 and the annular groove, thereby ensuring the stability of the lubricating fluid. delivery.
  • one of the inner peripheral wall of the sleeve body 2 and the outer peripheral wall of the shaft body 1 can be provided with a limiting groove, and the other can be provided with a limiting portion, and the limiting portion can fit in the limiting groove.
  • the relative movement amount of the sleeve body 2 and the shaft body 1 in the left-right direction can be limited.
  • the left and right ends of the sleeve body 2 can be provided with independent blocking structures, which can also limit the axial displacement of the sleeve body 2 .
  • the first flow channel 11 includes a first hole segment 111 and a second hole segment 112.
  • the first hole segment 111 is provided at the center of the shaft body 1 and extends along the axial direction of the shaft body 1.
  • the segment 112 extends along the radial direction of the shaft body 1 , and one end of the second hole segment 112 is connected with the first hole segment 111 , and the outlet of the first flow channel 11 is formed at the other end of the second hole segment 112 .
  • the first hole section 111 can generally extend along the axis of the shaft body 1
  • the second hole section 112 can generally extend in a direction perpendicular to the axis of the shaft body 1 . Therefore, on the one hand, the arrangement of the first flow channel 11 is facilitated, and on the other hand, the processing and shaping of the first flow channel 11 is facilitated.
  • a coal shearer according to an embodiment of the present disclosure will be described below.
  • the coal shearer in the embodiment of the present disclosure includes a traveling wheel assembly, and the traveling wheel assembly may be the traveling wheel assembly for the coal shearer described in the above embodiment.
  • the running wheel assembly of the coal shearer according to the embodiment of the present disclosure has a low failure rate, ensuring the continuity and production efficiency of the coal shearer.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features. In the description of the embodiments of the present disclosure, “plurality” means at least two, such as two, three, etc., unless otherwise explicitly and specifically limited.
  • connection In the embodiments of the present disclosure, unless otherwise explicitly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Detachable connection, or integration; it can be mechanical connection, electrical connection or communication with each other; it can be directly connected, it can be indirectly connected through an intermediary, it can be the internal connection of two elements or the interaction of two elements relationship, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.
  • the first feature "on” or “below” the second feature may be that the first and second features are in direct contact, or the first and second features are in intermediate contact. Indirect media contact.
  • the terms “above”, “above” and “above” the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.
  • the terms “one embodiment”, “some embodiments”, “example”, “specific examples”, or “some examples” etc. mean specific features, structures, structures, etc. described in connection with the embodiment or example. Materials or features are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
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  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
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  • General Details Of Gearings (AREA)

Abstract

一种采煤机用行走轮组件和采煤机。采煤机用行走轮组件包括轴体(1)，套体(2)，齿轮组(3)，第一轴承(4)和第二轴承(5)，轴体(1)内设有第一流道(11)，第一流道(11)的出口位于轴体(1)的外周壁；套体(2)套设在轴体(1)的外周侧并相对于轴体(1)可转动，套体(2)设有第二流道(21)，第二流道(21)包括环槽(211)和多个通孔(212)，环槽(211)设于套体(2)的内周壁，第一流道(11)的出口与环槽(211)的槽口相对并连通，多个通孔(212)设于环槽(211)的外周侧，且每个通孔(212)均与环槽(211)连通并沿着套体(2)的径向贯穿套体(2)；齿轮组(3)的内周壁设有环形腔(39)，齿轮组(3)可转动的装配于套体(2)的外周侧，多个通孔(212)的出口与环形腔(39)连通；多个通孔(212)的出口位于第一轴承(4)和第二轴承(5)之间。

Description

采煤机用行走轮组件和采煤机
相关申请的交叉引用
本公开要求在2022年09月15日在中国提交的中国专利申请号202211122177X的优先权，其全部内容通过引用并入本文。
技术领域
本公开涉及开采设备技术领域，具体涉及一种采煤机用行走轮组件和一种采煤机。
背景技术
采煤机是综采的主要设备之一，其主要用于实现对煤壁的截割。采煤机包括截割部、行走部、装载部等，其中行走部主要用于实现采煤机的移动，从而可以使得采煤机完成对不同位置的煤壁的截割。但是相关技术中，行走部的故障率较高，降低了采煤机的生产效率。
发明内容
本公开实施例旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本公开第一方面的实施例提出一种采煤机用行走轮组件，该采煤机用行走轮组件的故障率低，缩减了行走箱的更换周期，保障了采煤机的生产效率。
本公开第二方面的实施例还提出一种应用上述采煤机用行走轮组件的采煤机。
本公开实施例的采煤机用行走轮组件包括：
轴体，所述轴体内设有第一流道，所述第一流道的出口位于所述轴体的外周壁，且所述第一流道用于注入润滑液；
套体，所述套体套设在所述轴体的外周侧并相对于所述轴体可转动，所述套体设有第二流道，所述第二流道包括环槽和多个通孔，所述环槽设于所述套体的内周壁，所述第一流道的所述出口与所述环槽的槽口相对并连通，且所述第一流道的所述出口可在所述环槽的所述槽口的范围内移动，多个所述通孔设于所述环槽的外周侧并沿着所述环槽的周向间隔排布，且每个所述通孔均与所述环槽连通并沿着所述套体的径向贯穿所述套体；
齿轮组，所述齿轮组为环形，且所述齿轮组的内周壁设有环形腔，所述齿轮组可转动的装配于所述套体的外周侧，多个所述通孔的出口与所述环形腔连通；
第一轴承和第二轴承，所述第一轴承和所述第二轴承均装配于所述环形腔内并用于实现所述齿轮组和所述套体的转动装配，多个所述通孔的所述出口位于所述第一轴承和所述 第二轴承之间。
本公开实施例的采煤机用行走轮组件的故障率低，缩减了行走箱的更换周期，保障了采煤机的生产效率。
在一些实施例中，所述齿轮组设有第一挡止部和第二挡止部，所述第一轴承和所述第二轴承位于所述第一挡止部和所述第二挡止部之间，且所述第一轴承的外圈通过所述第一挡止部挡止限位，所述第二轴承的外圈通过所述第二挡止部挡止限位，所述套体的外周侧设有环形凸起，多个所述通孔穿过所述环形凸起，所述环形凸起夹在所述第一轴承的内圈和所述第二轴承的内圈之间。
在一些实施例中，所述齿轮组包括：
行走齿轮和传动齿轮，所述行走齿轮和所述传动齿轮相连并可同步转动，所述传动齿轮套设在所述行走齿轮的外周侧，所述传动齿轮设有第一齿部，所述行走齿轮设有第二齿部，所述第一齿部和所述第二齿部沿着所述轴体的轴向间隔布置；
第一端盖和第二端盖，所述第一端盖连接于所述行走齿轮的一端，所述第二端盖连接于所述行走齿轮的另一端，所述环形腔形成于所述第一端盖、所述第二端盖和所述行走齿轮所围成的空间内，所述第一挡止部设于所述第一端盖，所述第二挡止部设于所述第二端盖。
在一些实施例中，所述第一端盖的内周侧设有第一密封圈，所述第一密封圈配合在所述第一端盖和所述套体之间以实现所述第一端盖和所述套体之间的旋转密封；
所述第二端盖的内周侧设有第二密封圈，所述第二密封圈配合在所述第二端盖和所述套体之间以实现所述第二端盖和所述套体之间的旋转密封。
在一些实施例中，所述第一挡止部和所述第二挡止部均为环形并均位于所述行走齿轮内，所述第一挡止部的外周侧设有第三密封圈，所述第三密封圈用于实现所述第一挡止部和行走齿轮之间的密封，所述第二挡止部的外周侧设有第四密封圈，所述第四密封圈用于实现所述第二挡止部和行走齿轮之间的密封。
在一些实施例中，在所述轴体的轴向方向上，所述环槽的槽宽尺寸大于所述第一流道的所述出口的宽度尺寸。
在一些实施例中，每个所述通孔的通流截面大于设定阈值并小于所述第一流道的通流截面。
在一些实施例中，所述套体沿所述轴体的轴向可移动，且在所述套体相对于所述轴体移动的过程中，所述第一流道在所述轴体的径向方向上的投影始终位于所述环槽的所述槽口的范围内。
在一些实施例中，所述第一流道包括第一孔段和第二孔段，所述第一孔段设于所述轴 体的中心位置并沿着所述轴体的轴向延伸，所述第二孔段沿着所述轴体的径向延伸，且所述第二孔段的一端与所述第一孔段连通，所述第一流道的所述出口形成于所述第二孔段的另一端。
本公开实施例的采煤机包括如上述第一方面任一实施例中所述的采煤机用行走轮组件。
附图说明
图1是本公开实施例的行走轮组件的剖视示意图。
图2是图1中轴体和套体的示意图。
图3是图1中齿轮组的示意图。
附图标记：
轴体1；第一流道11；第一孔段111；第二孔段112；
套体2；第二流道21；环槽211；通孔212；环形凸起22；
齿轮组3；行走齿轮31；第二齿部311；传动齿轮32；第一齿部321；第一端盖33；
第一挡止部331；第二端盖34；第二挡止部341；第一密封圈35；第二密封圈36；第三密封圈37；第四密封圈38；环形腔39；
第一轴承4；
第二轴承5。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
如图1和图2所示，本公开实施例的采煤机用行走轮组件包括轴体1，套体2，齿轮组3，第一轴承4和第二轴承5。
轴体1内设有第一流道11，第一流道11的出口位于轴体1的外周壁，且第一流道11用于注入润滑液。如图2所示，轴体1可以为圆轴状，第一流道11的进口可以设在轴体1的右侧端面上，第一流道11的出口可以位于轴体1的外周壁。需要说明的是，第一流道11的进口可以仅设有一个，第一流道11的出口可以设有多个。
套体2套设在轴体1的外周侧并相对于轴体1可转动，套体2设有第二流道21，第二流道21包括环槽211和多个通孔212，环槽211设于套体2的内周壁，第一流道11的出口与环槽211的槽口相对并连通，且第一流道11的出口可在环槽211的槽口的范围内移动，多个通孔212设于环槽211的外周侧并沿着环槽211的周向间隔排布，且每个通孔212均与环槽211连通并沿着套体2的径向贯穿套体2。
在一些实施例中，如图1和图2所示，套体2可以圆管状，套体2可以套设在轴体1的外周侧，环槽211可以设在套体2的内周壁并位于套体2的中部位置，环槽211可以沿着套体2的周向延伸闭合为一圈。每个通孔212均可以沿着套体2的径向延伸，每个通孔212的内端可以与环槽211的槽底贯通，每个通孔212的外端可以与套体2的外周壁贯通。
如图1所示，齿轮组3为环形，且齿轮组3的内周壁设有环形腔39，环形腔39设有开口，环形腔39的开口朝向齿轮组3的内侧并沿着环形腔39的周向延伸闭合，齿轮组3可转动的装配于套体2的外周侧，多个通孔212的出口与环形腔39连通。
第一轴承4和第二轴承5均装配于环形腔39内并用于实现齿轮组3和套体2的转动装配，多个通孔212的出口位于第一轴承4和第二轴承5之间。在一些实施例中，如图1所示，第一轴承4和第二轴承5均安装在环形腔39内，第一轴承4的内圈可以与套体2过盈配合或固定相连，第一轴承4的外圈可以与齿轮组3的内周壁过盈配合或固定相连；第二轴承5的内圈可以与套体2过盈配合或固定相连，第二轴承5的外圈可以与齿轮组3的内周壁过盈配合或固定相连。
在一些实施例中，第一轴承4和第二轴承5均为滚动轴承。
使用时，套体2可以相对于轴体1转动，齿轮组3在第一轴承4和第二轴承5的作用下可以相对于套体2转动，润滑液可以经由第一流道11注入并可以流入第二流道21的环槽211内，然后在离心力和润滑液压力的作用下可以经由多个通孔212流入环形腔39内，从而可以实现对第一轴承4和第二轴承5的润滑。
本公开实施例的采煤机用行走轮组件，通过第一流道11和第二流道21可以同时向第一轴承4和第二轴承5供给润滑液，其中第二流道21由于设置有多个通孔212，可以使得润滑液均匀的分布于第一轴承4和第二轴承5之间的任意位置，从而保证了加注的均衡性。其次，环形腔39可以起到存储润滑液的作用，使得润滑液可以更为持久的进行润滑作用，从而避免了转动不畅而造成轴承发热的问题，进而避免了由于润滑不畅而造成行走轮组件故障率频发的问题，缩短了行走轮组件的更换周期(更换行走箱的时间为12-15小时)，保障了采煤机运行的连续性，进而保障了生产效率。
由于设置有套体2，套体2一方面可以起到增强结构强度的作用，从而使得轴体1和套体2组成的整体不易变形，从而保证了第一轴承4和第二轴承5转动的稳定性，另一方面套体2可以自行转动，使得齿轮组3的转动更加灵活、顺畅，方便了齿轮组3的转动驱动，可以进一步降低故障率并缩短行走轮更换周期。另外，原来需要设置在轴体1上的一些结构可以设置在套体2上，而套体2便于加工和更换，方便了使用。
在一些实施例中，齿轮组3设有第一挡止部331和第二挡止部341，第一轴承4和第二轴承5位于第一挡止部331和第二挡止部341之间，且第一轴承4的外圈通过第一挡止部 331挡止限位，第二轴承5的外圈通过第二挡止部341挡止限位，套体2的外周侧设有环形凸起22，多个通孔212穿过环形凸起22，环形凸起22夹在第一轴承4的内圈和第二轴承5的内圈之间。
如图3所示，第一挡止部331可以与环形腔39的左腔壁相连并向右侧延伸，第二挡止部341可以与环形腔39的右腔壁相连并向左侧延伸。第一挡止部331和第二挡止部341均位于环形腔39内并在左右方向上间隔布置。第一轴承4和第二轴承5夹在第一挡止部331和第二挡止部341之间，其中第一轴承4的外圈的左侧与第一挡止部331挡止配合，第二轴承5的外圈的右侧与第二挡止部341挡止配合。
如图2所示，环形凸起22可以设在套体2的外周侧并与套体2一体成型，装配时，环形凸起22的左侧可以与第一轴承4的内圈的右侧挡止配合，环形凸起22的右侧可以与第二轴承5的内圈的左侧挡止配合。
由此，第一轴承4会限位在第一挡止部331和环形凸起22之间，第二轴承5会限位在第二挡止部341和环形凸起22之间，实现了对第一轴承4和第二轴承5的限位装配，保证了第一轴承4和第二轴承5装配的紧凑性。另外，由于第一轴承4和第二轴承5的内圈和外圈仅一侧受到挡止限位，第一轴承4和第二轴承5可以具有一定的变形量，从而使得第一轴承4和第二轴承5在运行过程中可以根据需要进行适应性调整，可以进一步降低轴承的故障率。
在一些实施例中，齿轮组3包括行走齿轮31，传动齿轮32，第一端盖33和第二端盖34，行走齿轮31和传动齿轮32相连并可同步转动，传动齿轮32套设在行走齿轮31的外周侧，传动齿轮32设有第一齿部321，行走齿轮31设有第二齿部311，第一齿部321和第二齿部311沿着轴体1的轴向间隔布置；第一端盖33连接于行走齿轮31的一端，第二端盖34连接于行走齿轮31的另一端，环形腔39形成于第一端盖33、第二端盖34和行走齿轮31所围成的空间内，第一挡止部331设于第一端盖33，第二挡止部341设于第二端盖34。
在一些实施例中，如图1所示，传动齿轮32可以通过键和键槽的配合止转装配在行走齿轮31的外周侧，第一齿部321可以设在行走齿轮31的外周侧并沿着行走齿轮31的周向设置有一圈，第二齿部311可以设在传动齿轮32的外周侧并沿着传动齿轮32的周向设置有一圈，其中第一齿部321可以位于第二齿部311的右侧并与第二齿部311间隔布置。
第一端盖33可以通过螺栓等紧固件固定在行走齿轮31的左侧，第二端盖34也可以通过螺栓等紧固件固定在行走齿轮31的右侧。环形腔39位于行走齿轮31的内侧并位于第一端盖33和第二端盖34之间。
第一挡止部331可以一体成型于第一端盖33，当第一端盖33和行走齿轮31固定后，第一挡止部331的外表面可以与行走齿轮31的内周壁贴合。第二挡止部341可以一体成型于第二端盖34，当第二端盖34和行走齿轮31固定后，第二挡止部341的外表面可以与行走齿轮31的内周壁贴合。由此，可以保证齿轮组3装配的紧凑性和密封性。
在一些实施例中，第一端盖33的内周侧设有第一密封圈35，第一密封圈35配合在第一端盖33和套体2之间以实现第一端盖33和套体2之间的旋转密封；第二端盖34的内周侧设有第二密封圈36，第二密封圈36配合在第二端盖34和套体2之间以实现第二端盖34和套体2之间的旋转密封。
在一些实施例中，如图1所示，第一端盖33和第二端盖34均为环形，第一端盖33环绕在套体2的外周侧，第一端盖33用于与套体2的外周面配合的内周壁上可以设有环形的装配槽，第一密封圈35可以嵌装在该装配槽内。相似的，第二密封圈36也可以嵌装在第二端盖34的装配槽内并实现与套体2的旋转密封装配。
由此，可以使得环形腔39可以为密封腔，一方面避免了环形腔39内润滑液的泄露，有利于延长润滑液的作用时长，另一方面也可以起到阻挡外界杂质的作用，避免了煤尘、颗粒物等进入环形腔39内的情况，可以进一步降低第一轴承4和第二轴承5的故障率并延长行走轮组件的更换周期。
在一些实施例中，第一挡止部331和第二挡止部341均为环形并均位于行走齿轮31内，第一挡止部331的外周侧设有第三密封圈37，第三密封圈37用于实现第一挡止部331和行走齿轮31之间的密封，第二挡止部341的外周侧设有第四密封圈38，第四密封圈38用于实现第二挡止部341和行走齿轮31之间的密封。
在一些实施例中，如图1所示，第一挡止部331和第二挡止部341均大体可以为圆筒状，装配时，第一挡止部331可以从左侧插入行走齿轮31的内孔内，第二挡止部341可以从右侧插入行走齿轮31的内孔内。
第一挡止部331的外壁面上可以设有环形的装配槽，第三密封圈37可以嵌装在第一挡止部331的装配槽内，从而可以实现第一挡止部331和行走齿轮31之间的密封。第二挡止部341的外壁面上可以设有环形的装配槽，第四密封圈38可以嵌装在第二挡止部341的装配槽内，从而可以实现第二挡止部341和行走齿轮31之间的密封。进一步避免了环形腔39内的润滑液的泄露，也避免了杂质进入环形腔39内的情况。
在一些实施例中，在轴体1的轴向方向上，环槽211的槽宽尺寸大于第一流道11的出口的宽度尺寸。在一些实施例中，如图2所示，轴体1的轴向方向即为左右方向，环槽211在左右方向上的槽宽尺寸大于第一流道11的出口的宽度尺寸。由此，可以使得从第一流道11的出口流出的润滑液可以完全流入环槽211内。
在一些实施例中，每个通孔212的通流截面大于设定阈值并小于第一流道11的通流截面。在一些实施例中，如图2所示，通孔212和第一流道11均可以为圆孔，通孔212的径向尺寸可以小于第一流道11的径向尺寸。由于通孔212有多个，使得第一流道11内的润滑液的量可以满足向多个通孔212分配润滑液的需求，避免了通孔212的通流截面较大而容易造成部分通孔212内无法通入润滑液的情况，有利于润滑液的均匀分配，从而保证了第一轴承4和第二轴承5的各个位置的润滑。
另外，设定阈值可以为经过试验模拟后确定的具体参数值，在一些实施例中，可以为5毫米以上，此时，通孔212的孔径较大，可以避免轴承运转后产生油泥而将第一流道11或第二流道21封堵的情况，进一步保证了油路的畅通性。
在一些实施例中，套体2沿轴体1的轴向可移动，且在套体2相对于轴体1移动的过程中，第一流道11在轴体1的径向方向上的投影始终位于环槽211的槽口的范围内。在一些实施例中，为了提升使用的灵活性，使得套体2可以在受到相应的作用力时可以进行适应性调整，套体2相对于轴体1可以沿着左右方向可进行较小范围内的移动。但是在套体2移动的过程中，第一流道11的出口始终位于环形槽的槽口的轮廓范围内，保证了第一流道11和环形槽之间的连通面积，进而保证了润滑液的稳定输送。
在另一些实施例中，套体2的内周壁和轴体1的外周壁的其中一者可以设有限位槽，另一者可以设有限位部，限位部可以配合在限位槽内，由此，可以限制套体2和轴体1在左右方向上的相对移动量。可以理解的是，在其他一些实施例中，套体2的左端和右端可以设置独立的挡止结构，从而也可以起到对套体2的轴向位移的限位作用。
在一些实施例中，第一流道11包括第一孔段111和第二孔段112，第一孔段111设于轴体1的中心位置并沿着轴体1的轴向延伸，第二孔段112沿着轴体1的径向延伸，且第二孔段112的一端与第一孔段111连通，第一流道11的出口形成于第二孔段112的另一端。在一些实施例中，如图2所示，第一孔段111大体也可以沿着轴体1的轴线延伸，第二孔段112大体可以沿着垂直于轴体1的轴线的方向延伸。由此，一方面方便了第一流道11的布置，另一方面也方便了第一流道11的加工成型。
在另一些实施例中，第二孔段112可以设有多个，多个第二孔段112可以沿着第一孔段111的周向等间隔排布。由此，可以使得润滑液均匀的分配至环形槽内。
下面描述本公开实施例的采煤机。
本公开实施例的采煤机包括行走轮组件，行走轮组件可以为上述实施例中描述的采煤机用行走轮组件。本公开实施例的采煤机的行走轮组件的故障率低，保证了采煤机生产的连续性和生产效率。
在本公开实施例的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开实施例的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本公开实施例中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开实施例中的具体含义。
在本公开实施例中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本公开实施例中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管已经示出和描述了上述实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开实施例的限制，本领域普通技术人员对上述实施例进行的变化、修改、替换和变型均在本公开实施例的保护范围内。

Claims (10)

  1. 一种采煤机用行走轮组件，其特征在于，包括：
    轴体，所述轴体内设有第一流道，所述第一流道的出口位于所述轴体的外周壁，且所述第一流道用于注入润滑液；
    套体，所述套体套设在所述轴体的外周侧并相对于所述轴体可转动，所述套体设有第二流道，所述第二流道包括环槽和多个通孔，所述环槽设于所述套体的内周壁，所述第一流道的所述出口与所述环槽的槽口相对并连通，且所述第一流道的所述出口可在所述环槽的所述槽口的范围内移动，多个所述通孔设于所述环槽的外周侧并沿着所述环槽的周向间隔排布，且每个所述通孔均与所述环槽连通并沿着所述套体的径向贯穿所述套体；
    齿轮组，所述齿轮组为环形，且所述齿轮组的内周壁设有环形腔，所述齿轮组可转动的装配于所述套体的外周侧，多个所述通孔的出口与所述环形腔连通；
    第一轴承和第二轴承，所述第一轴承和所述第二轴承均装配于所述环形腔内并用于实现所述齿轮组和所述套体的转动装配，多个所述通孔的所述出口位于所述第一轴承和所述第二轴承之间。
  2. 根据权利要求1所述的采煤机用行走轮组件，其特征在于，所述齿轮组设有第一挡止部和第二挡止部，所述第一轴承和所述第二轴承位于所述第一挡止部和所述第二挡止部之间，且所述第一轴承的外圈通过所述第一挡止部挡止限位，所述第二轴承的外圈通过所述第二挡止部挡止限位，所述套体的外周侧设有环形凸起，多个所述通孔穿过所述环形凸起，所述环形凸起夹在所述第一轴承的内圈和所述第二轴承的内圈之间。
  3. 根据权利要求2所述的采煤机用行走轮组件，其特征在于，所述齿轮组包括：
    行走齿轮和传动齿轮，所述行走齿轮和所述传动齿轮相连并可同步转动，所述传动齿轮套设在所述行走齿轮的外周侧，所述传动齿轮设有第一齿部，所述行走齿轮设有第二齿部，所述第一齿部和所述第二齿部沿着所述轴体的轴向间隔布置；
    第一端盖和第二端盖，所述第一端盖连接于所述行走齿轮的一端，所述第二端盖连接于所述行走齿轮的另一端，所述环形腔形成于所述第一端盖、所述第二端盖和所述行走齿轮所围成的空间内，所述第一挡止部设于所述第一端盖，所述第二挡止部设于所述第二端盖。
  4. 根据权利要求3所述的采煤机用行走轮组件，其特征在于，所述第一端盖的内周侧设有第一密封圈，所述第一密封圈配合在所述第一端盖和所述套体之间以实现所述第一端盖和所述套体之间的旋转密封；
    所述第二端盖的内周侧设有第二密封圈，所述第二密封圈配合在所述第二端盖和所述套体之间以实现所述第二端盖和所述套体之间的旋转密封。
  5. 根据权利要求3或4所述的采煤机用行走轮组件，其特征在于，所述第一挡止部和所述第二挡止部均为环形并均位于所述行走齿轮内，所述第一挡止部的外周侧设有第三密封圈，所述第三密封圈用于实现所述第一挡止部和行走齿轮之间的密封，所述第二挡止部的外周侧设有第四密封圈，所述第四密封圈用于实现所述第二挡止部和行走齿轮之间的密封。
  6. 根据权利要求1至5中任一项所述的采煤机用行走轮组件，其特征在于，在所述轴体的轴向方向上，所述环槽的槽宽尺寸大于所述第一流道的所述出口的宽度尺寸。
  7. 根据权利要求1至6中任一项所述的采煤机用行走轮组件，其特征在于，每个所述通孔的通流截面大于设定阈值并小于所述第一流道的通流截面。
  8. 根据权利要求1至7中任一项所述的采煤机用行走轮组件，其特征在于，所述套体沿所述轴体的轴向可移动，且在所述套体相对于所述轴体移动的过程中，所述第一流道在所述轴体的径向方向上的投影始终位于所述环槽的所述槽口的范围内。
  9. 根据权利要求1至8中任一项所述的采煤机用行走轮组件，其特征在于，所述第一流道包括第一孔段和第二孔段，所述第一孔段设于所述轴体的中心位置并沿着所述轴体的轴向延伸，所述第二孔段沿着所述轴体的径向延伸，且所述第二孔段的一端与所述第一孔段连通，所述第一流道的所述出口形成于所述第二孔段的另一端。
  10. 一种采煤机，其特征在于，包括如上述权利要求1至9中任一项所述的采煤机用行走轮组件。
PCT/CN2023/116517 2022-09-15 2023-09-01 采煤机用行走轮组件和采煤机 WO2024055850A1 (zh)

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