CN210290702U - High-efficient forced lubrication system of coal-winning machine with circulation lubricating function - Google Patents
High-efficient forced lubrication system of coal-winning machine with circulation lubricating function Download PDFInfo
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- CN210290702U CN210290702U CN201921130322.2U CN201921130322U CN210290702U CN 210290702 U CN210290702 U CN 210290702U CN 201921130322 U CN201921130322 U CN 201921130322U CN 210290702 U CN210290702 U CN 210290702U
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Abstract
The utility model relates to a high-efficient forced lubrication system of coal-winning machine with circulating lubrication function, including the high-speed end lubricant pump, low-speed end lubricant pump and lubricated oil duct, it is high, the low-speed end lubricant pump is arranged in the transmission case of rocking arm, lubricated oil duct sets up in the transmission case casing of rocking arm, lubricated oil duct includes main oil duct and multiunit branch oil duct, the main oil duct passes through branch oil duct and high-speed end lubricant pump, the lubricated some homogeneous phase of low-speed end lubricant pump and each axle subassembly of rocking arm transmission system leads to, still communicate with each other with the oil drain port of high, low-speed end lubricant pump simultaneously. The utility model discloses in every constantly high, always have one in the low level can be to the main oil duct fuel feeding in the low-speed end lubricant pump, be full of fluid all the time in making the main oil duct, these fluids supply with the lubricant dot of high-speed end lubricant pump, low-speed end lubricant pump and each axle subassembly of rocker arm transmission system in real time through each branch's oil duct again, even be the coal-winning machine under the condition of big inclination working face work, rocker arm transmission system can not lack oil everywhere, have very strong adaptability.
Description
Technical Field
The utility model relates to a high-efficient forced lubrication system of coal-winning machine mainly is used on coal-winning machine rocking arm part for realize the high-efficient lubrication of each axle group bearing of rocking arm transmission system, its characteristics are that the circulation lubrication function has, belong to coal mining equipment technical field.
Background
Most of the prior coal mining machine rocker arms are provided with forced lubrication systems, wherein one typical structure is that a lubrication pump is arranged at the high-speed end of the rocker arm, lubricating oil is pumped to the low-speed end through the lubrication pump, and when the coal mining machine is used for a large-inclination working surface, a bearing at the high-speed end of the lower rocker arm is in oil shortage; in addition, this structure is generally provided with only one lubricating oil passage hole which leads to only the end of the eight-shaft assembly of the rocker arm, so that lubricating oil can be introduced only in the vicinity of the eight-shaft assembly, and the low-speed end bearing cannot be directly lubricated, so that the lubricating efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high-efficient forced lubrication system of coal-winning machine with circulating lubrication function can both carry out high-efficient lubrication to the bearing of each axle group among the rocking arm transmission system, even the coal-winning machine under the condition of big inclination working face work, whole rocking arm can not have the starved oil phenomenon everywhere, has very strong adaptability.
The utility model discloses a main technical scheme has:
the utility model provides a high-efficient forced lubrication system of coal-winning machine with circulative lubrication function, includes high-speed end lubricant pump, low-speed end lubricant pump and lubricated oil duct, high-speed end lubricant pump and low-speed end lubricant pump arrange in the transmission case of rocking arm, organize row parallel arrangement with each axle of rocking arm transmission system to be located the outside of first two last axle groups respectively, lubricated oil duct sets up in the transmission case casing of rocking arm, lubricated oil duct includes main oil duct and multiunit branch oil duct, the main oil duct passes through branch oil duct communicates with each axle subassembly of high-speed end lubricant pump, low-speed end lubricant pump and rocking arm transmission system's lubricated point homogeneous phase, still communicates with each other with the oil drain port of high-speed end lubricant pump and low-speed end lubricant pump simultaneously.
The main oil duct is annular and is positioned at the upper part of the shell, the main oil duct extends and is arranged into a long strip shape along the length direction of the rocker arm where the main oil duct is positioned, the branch oil duct is a duct extending up and down, the upper end of the branch oil duct is communicated with the main oil duct, the lower end of the branch oil duct is opened on the surface of the inner wall of the transmission case, and the respective axes of the high-speed end lubricating pump, the low-speed end lubricating pump and each shaft assembly of the rocker arm transmission system are.
The multiple groups of branch oil passages are preferably arranged in one-to-one correspondence with the high-speed end lubricating pump, the low-speed end lubricating pump and each shaft assembly of the rocker arm transmission system.
The high-speed end lubricating pump and the low-speed end lubricating pump both comprise a pump shell, a pump shaft, a pump gear, a distance pad and a mounting pad, wherein the pump shell is in a cup shape, one end of the pump shaft is supported in an inner hole at the sealing end of the pump shell through a first bearing, the other end of the pump shaft extends out of an open end of the pump shell, the pump gear and the distance pad are sequentially coaxially sleeved on the pump shaft and then supported on a transmission case shell through a second bearing, the pump gear is connected with the pump shaft through a key, the mounting pad is mounted in a mounting hole of the transmission case shell, the pump gear is axially limited by a shaft shoulder on the pump shaft and the distance pad, the second bearing is axially limited by the distance pad and the mounting pad, the shaft shoulder is embedded into the opening of the pump shell and is sealed from the open end of the pump shell, spiral blades are distributed on a shaft section between the shaft shoulder and a shaft neck where the first bearing, the side wall of the pump shell close to the sealing end is provided with a radial through hole, the radial through hole is formed into an oil discharge port of a corresponding lubricating pump, seals are respectively arranged on the front side and the rear side of the radial through hole between the mounting holes on the pump shell and the transmission case shell, the sealing end of the pump shell is arranged into a flange structure, the pump shell is detachably fixed on the transmission case shell through the flange structure, the side wall of the pump shell close to the opening end is provided with an opening, the opening is formed into an oil inlet of the corresponding lubricating pump, and pump gears of the high-speed end lubricating pump and the low-speed end lubricating pump are respectively externally meshed with a shaft gear of a shaft assembly of a rocker arm transmission system and an eight-shaft gear of.
The mounting pads of the high and low speed end lubrication pumps are preferably mounted on the old pond side and coal wall side of the respective second bearings, respectively.
The plurality of groups of branch oil passages may include ten groups of branch oil passages arranged at intervals in a length direction of the rocker arm; the first group of branch oil ducts are provided with two oil duct holes, wherein the lower end opening of the coal wall side oil duct hole is arranged on the wall of a mounting hole matched with a pump shell of the high-speed end lubricating pump and communicated with a corresponding radial through hole, and the lower end opening of the old pond side oil duct hole is arranged on the wall of a mounting hole of a second bearing of the high-speed end lubricating pump; the tenth group of branch oil ducts is provided with two oil duct holes, wherein the lower end opening of the coal wall side oil duct hole is arranged on the hole wall of the mounting hole of the second bearing of the low-speed end lubricating pump, and the lower end opening of the old pond side oil duct hole is arranged on the hole wall of the mounting hole matched with the pump shell of the low-speed end lubricating pump and communicated with the corresponding radial through hole.
The second, fourth, seventh and ninth groups of branch oil ducts are provided with two oil duct holes which respectively correspond to bearing positions of a shaft assembly, a six-shaft assembly and an eight-shaft assembly of the rocker arm transmission system, which are close to the coal wall side and the old pond side; the third, fifth, sixth and eighth groups of branch oil ducts are provided with an oil duct hole which respectively corresponds to the positions of the bearing groups in the middle of the two-shaft, four-shaft, five-shaft and seven-shaft components of the rocker arm transmission system.
More preferably: the lower end openings of two oil passage holes of the second, fourth and ninth groups of branch oil passages are respectively positioned on the coal wall side of the first shaft, the third shaft and the eighth shaft and the hole wall of a bearing seat hole of the old pond side bearing, and the lower end openings of two oil passage holes of the seventh group of branch oil passages are respectively positioned on the hole wall of an installation hole of a coal wall side bearing of the six-shaft assembly and the inner wall of a transmission case shell on the coal wall side close to the old pond side bearing; the lower end openings of the oil passage holes of the third and fifth groups of branch oil passages are respectively positioned on the hole walls of the old pond side mounting holes of the wheel shafts of the two-shaft and four-shaft assemblies, the wheel shafts of the two-shaft and four-shaft assemblies are internally provided with hole passages for communicating the outer diameter of the old pond side wheel shaft with the mounting shaft neck of the middle bearing group, the lower end openings of the oil passage holes of the sixth group of branch oil passages are positioned on the hole walls of the mounting holes of the middle bearing group of the five-shaft assemblies, the lower end openings of the oil passage holes of the eighth group of branch oil passages are positioned on the hole walls of the coal wall side mounting holes of the wheel shafts of the seven-shaft assemblies, and the wheel shafts of the seven-shaft assemblies are internally provided with hole passages for communicating.
The connecting parts of the branch oil ducts and the main oil duct, which lead to the lubricating points of the shaft assemblies of the high-speed end lubricating pump, the low-speed end lubricating pump and the rocker arm transmission system, are preferably provided with central oil plugs, the central oil plugs are provided with oil passing small holes, and the main oil ducts are communicated with the corresponding branch oil ducts through the corresponding oil passing small holes.
The top of the casing of rocking arm has been seted up the circulation lubrication groove, the circulation lubrication groove seals with the welding of oil groove apron and forms the main oil duct, the oil groove apron has the polylith and splices each other.
The utility model has the advantages that:
because one of the high-speed end lubricating pump and the low-speed end lubricating pump is always in a low position at each moment and can supply oil to the main oil duct, the main oil duct is always filled with oil liquid, and the oil liquid is supplied to the lubricating points of the high-speed end lubricating pump, the low-speed end lubricating pump and shaft assemblies of the rocker arm transmission system in real time through the branch oil ducts, even if the coal mining machine works on a large-inclination working surface, the rocker arm transmission system cannot lack oil at all positions, and the adaptability is strong.
The utility model discloses an annular main oil duct forms the circulating lubrication oil duct, has simplified the oil duct in the rocking arm casing and has arranged, makes the casting of rocking arm casing, processing simpler, more economical to in big inclination working face, lubricating oil also can directly reach bearing everywhere in the rocker arm transmission case, and then forms high-efficient lubrication.
The utility model discloses a lubricating-oil duct design benefit, simple structure and compactness, space utilization is high, low in production cost.
Because the pump shaft rotation directions in the high-speed end lubricating pump and the low-speed end lubricating pump are irrelevant to the left working surface and the right working surface, when the left working surface and the right working surface of the coal mining machine are replaced, the rotation directions of the lubricating pumps do not need to be replaced, and the adaptability of a forced lubricating system is further improved.
Drawings
Fig. 1 is a schematic view of the arrangement of a high-speed end lubrication pump and a low-speed end lubrication pump in a rocker arm according to an embodiment of the present invention;
FIG. 2 is a schematic view of the arrangement of a circulating oil sump on the rocker arm housing in an embodiment of the present invention;
FIG. 3 is a schematic diagram of the construction of a high-speed end lubrication pump;
FIG. 4 is a schematic diagram of the construction of a low-speed end lubrication pump;
FIG. 5 is a cross-sectional view (first set of branch oil passages) at C1-C1 of FIG. 2;
FIG. 6 is a cross-sectional view (second group of branch oil passages) C2-C2 of FIG. 2;
FIG. 7 is a cross-sectional view C3-C3 (the third group branch oil passage) of FIG. 2;
FIG. 8 is a cross-sectional view C4-C4 of FIG. 2 (the fourth group of branch oil passages);
FIG. 9 is a cross-sectional view (the fifth group of branch oil passages) C5-C5 of FIG. 2;
FIG. 10 is a cross-sectional view (sixth group of branch oil passages) C6-C6 of FIG. 2;
FIG. 11 is a cross-sectional view (the seventh group of branch oil passages) C7-C7 of FIG. 2;
FIG. 12 is a cross-sectional view (eighth group branch oil passage) C8-C8 of FIG. 2;
FIG. 13 is a cross-sectional view (the ninth group of branch oil passages) C9-C9 of FIG. 2;
FIG. 14 is a cross-sectional view (the tenth group of branch oil passages) C10-C10 of FIG. 2;
fig. 15 is a schematic structural view of a central oil block.
Description of the drawings: 1. the high-speed end lubricating pump, the low-speed end lubricating pump, the rocker arm transmission case, the central oil block, the oil through small hole, the oil groove cover plate, the pump shell, the pump shaft, the first bearing, the screw group, the O-shaped ring, the pump gear, the key, the distance pad, the second bearing, the mounting pad, the main oil duct, the oil duct hole, the oil, 17-71 and 17-72 oil passage holes of a seventh group of branch oil passages, 17-8 oil passage holes of an eighth group of branch oil passages, 17-91 and 17-92 oil passage holes of a ninth group of branch oil passages, 17-101 oil passage holes on the coal wall side of a tenth group of branch oil passages, 17-102 oil passage holes on the old pond side of the tenth group of branch oil passages, Z1. one-shaft assembly, Z2. two-shaft assembly, Z3. three-shaft assembly, Z4. four-shaft assembly, Z5 five-shaft assembly, Z6. six-shaft assembly, Z7. seven-shaft assembly and Z8. eight-shaft assembly.
Detailed Description
The utility model discloses a high-efficient forced lubrication system of coal-winning machine (lubricating system for short) with circulation lubrication function, as shown in fig. 1-15, including high-speed end lubricating pump 1, low-speed end lubricating pump 2 and lubricating oil duct, high-speed end lubricating pump and low-speed end lubricating pump arrange in the transmission case of rocking arm, with rocker arm transmission system's each axle group in bank parallel arrangement to lie in the outside of first two last axle groups respectively, first two last axle groups are the highest axle group of rotational speed and the minimum axle group of rotational speed respectively. The lubricating oil passage is arranged in the transmission case 3 of the rocker arm. The lubricating oil passage comprises a main oil passage 16 and a plurality of groups of branch oil passages, and the main oil passage is communicated with a high-speed end lubricating pump, a low-speed end lubricating pump and lubricating points (mainly rolling bodies of bearings) of shaft assemblies of the rocker arm transmission system through the branch oil passages and is also communicated with oil discharge ports of the high-speed end lubricating pump and the low-speed end lubricating pump. No matter which one of the first and the last two shaft groups of the rocker arm transmission system is in a high position, the high-speed end lubricating pump or the low-speed end lubricating pump which is in the lowest position supplies oil to the main oil duct, so that the main oil duct is filled with oil all the time, the oil in the main oil duct is supplied to a lubricating point of the high-speed end lubricating pump, a lubricating point of the low-speed end lubricating pump and a lubricating point of each shaft component of the rocker arm transmission system in real time through each branch oil duct, and redundant oil of each lubricating point is collected into an oil pool of the transmission case again, so that continuous oil feeding is provided for the high-speed end lubricating pump and the low-speed end lubricating pump. Adopt the utility model discloses a circulating lubrication system, even coal-winning machine work is when big inclination working face, lubricating oil also can directly reach the bearing everywhere of each axle subassembly of rocking arm transmission system, and then forms high-efficient lubrication.
As shown in fig. 2. The main oil duct is annular, is positioned at the upper part of the shell and extends and is arranged into a long strip shape along the length direction of the rocker arm where the main oil duct is positioned. The main oil gallery is set in a closed ring shape, and no matter the branch oil gallery communicated with the oil discharge port of the high-speed end lubricating pump or the oil discharge port of the low-speed end lubricating pump supplies oil to the main oil gallery, the oil can flow into any group of branch oil galleries leading to the lubricating point, so that all the lubricating points communicated with the branch oil galleries can obtain the oil. The branch oil passage is preferably a hole passage extending up and down, as shown in fig. 5 to 14, and the upper end of the branch oil passage is communicated with the main oil passage, and the lower end of the branch oil passage is opened on the inner wall surface of the transmission case. And the axes of the high-speed end lubricating pump, the low-speed end lubricating pump and each shaft assembly of the rocker arm transmission system are horizontally arranged in a front-back extending manner.
The multiple groups of branch oil passages are preferably arranged in one-to-one correspondence with the high-speed end lubricating pump, the low-speed end lubricating pump and each shaft assembly of the rocker arm transmission system. For example, in the case where the rocker arm transmission system in the present embodiment is provided with eight shaft groups, the lubrication system is provided with ten groups of branch oil passages in total.
The high-speed end lubricating pump and the low-speed end lubricating pump both comprise a pump shell 6, a pump shaft 7, a pump gear 11, a distance pad 13 and a mounting pad 15, the main body of the pump shell is in a cup shape, one end of the pump shaft is supported in an inner hole at the sealing end of the pump shell through a first bearing 8, the other end of the pump shaft extends out of an open end of the pump shell, and the pump gear 11 and the distance pad 13 are sequentially coaxially sleeved on the pump shaft and then supported in corresponding bearing mounting holes in a transmission case body through a second bearing 14. The pump gear 11 is in key connection with the pump shaft 7 through a key 12. The mounting pad 15 is mounted in a mounting hole of a transmission case, the pump gear 11 is axially limited by a shoulder on a pump shaft and the distance pad 13, and the second bearing 14 is axially limited by the distance pad 13 and the mounting pad 15, wherein the distance pad and the mounting pad are respectively used for limiting the axial position of an inner ring and an outer ring of the second bearing. The shoulder is inserted into the mouth of the pump housing, closing the pump housing from the open end thereof. Helical blade is distributed on the shaft section between the shaft shoulder and the shaft neck for installing the first bearing, and the helical blade in the embodiment is a helical blade in the right-handed direction. The space between the pump shell, the shaft shoulder and the helical blade is the inner cavity of the pump.
The pump shell is matched with a shaft hole of a mounting hole in the transmission case shell, a radial through hole is formed in the side wall, close to the sealing end, of the pump shell, the radial through hole forms an oil discharge port of a corresponding lubricating pump, seals are respectively arranged on the front side and the rear side of the radial through hole between the mounting holes in the pump shell and the transmission case shell, and an O-shaped ring 10 is adopted for sealing in the embodiment shown in the attached figures 3 and 4. The sealing end of the pump shell is arranged into a flange structure, the outer wall of a cup body of the pump shell is used for radial positioning, the flange structure is used for axial positioning and fastening, the pump shell is detachably fixed on the shell of the transmission case, and the pump shell is fixed through a screw group 9 in the embodiment shown in the attached figures 3 and 4. The side wall of the pump shell close to the open end (namely the side wall of the cup body) is provided with an opening, so that the inside and the outside of the pump shell are communicated, and the opening is formed as an oil inlet of a corresponding lubricating pump.
Except that the pump gears of the high-speed end lubrication pump 1 and the low-speed end lubrication pump 2 are externally meshed with a shaft gear of a shaft assembly Z1 and an eight-shaft gear of an eight-shaft assembly Z8 of the rocker arm transmission system, respectively. The high-speed end lubricating pump and the low-speed end lubricating pump are driven to rotate by a shaft gear and an eight-shaft gear respectively. As long as the rocker arm transmission system works, the high-speed end lubricating pump and the low-speed end lubricating pump work, and the lubricating system continuously performs circulating forced lubrication.
The mounting hole on the transmission case shell matched with the shaft hole of the pump shell is preferably positioned on the coal wall side of the rocker arm for the high-speed end lubricating pump, and is preferably positioned on the old pond side of the rocker arm for the low-speed end lubricating pump, and the high-speed end lubricating pump and the low-speed end lubricating pump are respectively assembled and disassembled from the coal wall side and the old pond side of the rocker arm. The mounting pads of the high and low speed end lubrication pumps are preferably mounted on the old pond side and coal wall side of the respective second bearings 14, respectively. The middle part of the mounting pad is preferably provided with a threaded hole, when the lubricating pump is disassembled, the second bearing can be taken out simultaneously by pulling the screw after the screw is screwed in, and the second bearing and the mounting pad are convenient to disassemble.
The plurality of sets of branch oil passages may include ten sets of branch oil passages arranged at intervals in a length direction of the rocker arm. The first group of branch oil ducts is provided with two oil duct holes 17-11 and 17-12, wherein the lower end opening of the coal wall side oil duct hole 17-11 is arranged on the wall of a mounting hole matched with a pump shell of the high-speed end lubricating pump and is communicated with a corresponding radial through hole, oil output of the high-speed end lubricating pump enters the main oil duct through the coal wall side oil duct hole 17-11, the lower end opening of the old pool side oil duct hole 17-12 is arranged on the wall of the mounting hole of the second bearing of the high-speed end lubricating pump, and oil in the main oil duct can be directly supplied to the second bearing of the high-speed end lubricating pump through the old pool side oil duct hole 17-12, so that the lubrication of the bearing at the position is optimized. Similarly, the tenth group of branch oil ducts is provided with two oil duct holes 17-101 and 17-102, wherein the lower end of the coal wall side oil duct hole 17-101 is opened on the wall of the mounting hole of the second bearing of the low-speed end lubricating pump, oil in the main oil duct can be directly supplied to the second bearing of the low-speed end lubricating pump through the coal wall side oil duct hole 17-101, so that the lubrication of the bearing is optimized, the lower end of the old pond side oil duct hole 17-102 is opened on the wall of the mounting hole matched with the pump shell of the low-speed end lubricating pump and is communicated with the corresponding radial through hole, and oil in the low-speed end lubricating pump enters the main oil duct through the old pond side oil duct hole 17-102.
In the branch oil passages leading to each lubricating point, the second, fourth, seventh and ninth groups of branch oil passages are provided with two oil passage holes 17-21, 17-22, 17-41, 17-42, 17-71, 17-72, 17-91 and 17-92 which respectively correspond to the bearing positions of a shaft assembly, a triaxial assembly, a hexaxial assembly and an octaxial assembly of the rocker transmission system, which are close to the coal wall side and the old pond side, so as to optimize the bearing lubrication of the two parts; the third, fifth, sixth and eighth groups of branch oil ducts are provided with oil duct holes 17-3, 17-5, 17-6 and 17-8 which respectively correspond to the positions of the bearing groups in the middle of the two-shaft, four-shaft, five-shaft and seven-shaft components of the rocker arm transmission system so as to optimize the lubrication of the bearing groups in the middle. The arrangement of several oil passage holes per group of branch oil passages depends mainly on the arrangement of bearings in the corresponding shaft assembly at several positions, and one oil passage hole is preferably arranged if the bearings are concentrated in the middle in the front-rear direction, and two oil passage holes are preferably arranged dispersedly if the bearings are dispersed at both ends in the front-rear direction.
As shown in fig. 6 to 14, it is further preferable that: the lower end openings of two oil passage holes 17-21, 17-22, 17-41, 17-42, 17-91 and 17-92 of the second, fourth and ninth groups of branch oil passages are respectively positioned on the hole walls of the bearing seat holes of the coal wall side bearing and the old pool side bearing of the first shaft, the third shaft and the eighth shaft component so as to directly lubricate the coal wall side bearing and the old pool side bearing. The lower end openings of two oil channel holes 17-71 and 17-72 of the seventh group of branch oil channels are respectively positioned on the hole wall of the mounting hole of the coal wall side bearing of the six-shaft component and the inner wall of the transmission case shell at the side close to the coal wall of the old pool side bearing, oil liquid sent out from the oil channel hole enters the bearing through a radial small hole on the outer ring of the coal wall side bearing, and oil liquid sent out from the oil channel hole enters the bearing from the end face of the coal wall side of the old pool side bearing, and both the oil channel holes and the bearing can directly lubricate the bearing. The lower end openings 17-3 and 17-5 of the oil passage holes of the third and fifth groups of branch oil passages are respectively positioned on the hole walls of the old pond side mounting holes of the wheel shafts of the two-shaft and four-shaft assemblies, and the wheel shafts of the two-shaft and four-shaft assemblies are internally provided with the hole passages for communicating the outer diameter of the old pond side wheel shaft with the mounting shaft neck of the middle bearing group, so that oil liquid sent out from the oil passage holes can enter the middle bearing through the hole passages in the wheel shafts, and usually enters the two bearings from the end faces in the front-back direction from the radial gap between the two bearings in the middle. The lower end opening of the oil passage hole 17-6 of the sixth group of branch oil passages is positioned on the hole wall of the mounting hole of the middle bearing group of the five-axis component, preferably at the interval between the two bearings in the middle, so that oil enters the two bearings from the end faces in the front-back direction. The lower end openings of oil passage holes 17-8 of the eighth group of branch oil passages are positioned on the hole wall of a coal wall side mounting hole of a wheel shaft of the seven-shaft assembly, and meanwhile, a hole passage for communicating the outer diameter of the coal wall side wheel shaft with a mounting journal of the middle bearing group is arranged in the wheel shaft of the seven-shaft assembly, so that oil sent out from the oil passage holes can enter the middle bearing group through the hole passage in the wheel shaft, and usually enters the two bearings from the end faces of a radial gap between the two bearings in the middle part to the front and back directions respectively.
The joints of the branch oil ducts and the main oil duct, which lead to the lubricating points of the shaft assemblies of the high-speed end lubricating pump, the low-speed end lubricating pump and the rocker arm transmission system, are preferably provided with central oil plugs 4, the central oil plugs are provided with oil passing small holes 4-1, and the main oil ducts are communicated with the corresponding branch oil ducts through the corresponding oil passing small holes. The arrangement of the small oil passing holes can improve the oil pressure at the downstream of the central oil plug and ensure that all lubricating points can be fully lubricated.
And a circulating lubricating oil groove is formed in the top of the shell of the rocker arm, and the circulating lubricating oil groove is welded and sealed by an oil groove cover plate 5 to form the main oil duct. The oil groove cover plate can be provided with a plurality of pieces which are correspondingly welded on different positions of the circulating lubrication oil groove, and the size and the shape of the oil groove cover plate can be different according to the difference of the size, the bending angle and the like of each part of the circulating lubrication oil groove and are spliced and connected with each other.
When the rocker arm is placed horizontally, lubricating oil is arranged at the positions of the first shaft assembly and the eight shaft assemblies, the lubricating oil at the positions of the first shaft assembly and the eight shaft assemblies can be pumped into the main oil duct by the high-speed end lubricating pump 1 and the low-speed end lubricating pump 2 respectively, and the lubricating oil lubricates bearings of the shaft assemblies in the rocker arm through the branch oil ducts. When the coal-winning machine during operation in big inclination working face, not adopting the utility model discloses an in lubricating system's rocking arm, probably appear a subassembly department lack the condition of lubricating oil or eight axle subassemblies department lack lubricating oil, under this condition, if adopt the utility model discloses a lubricating system, high-speed end lubricating pump 1, low-speed end lubricating pump 2 have at least one lubricating pump in the two can go into the main oil duct with lubricating oil pump to the lubrication of the bearing of each axle subassembly in the rocking arm is realized.
The upper and lower portions in this document correspond to the upper and lower portions in fig. 5, and the front and rear portions in this document correspond to the left and right portions in fig. 5, and also correspond to the coal wall side and the old pond side, respectively.
Claims (10)
1. The utility model provides a coal-winning machine high efficiency forces lubricating system with circulation lubrication function which characterized in that: including high-speed end lubricant pump, low-speed end lubricant pump and lubricated oil duct, high-speed end lubricant pump and low-speed end lubricant pump arrange in the transmission case of rocking arm, with each axle group parallel arrangement of rocking arm transmission system to be located the outside of first two last axle groups respectively, lubricated oil duct sets up in the transmission case casing of rocking arm, lubricated oil duct includes main oil duct and multiunit branch oil duct, the main oil duct passes through branch oil duct leads to with the lubrication point homogeneous phase of high-speed end lubricant pump, low-speed end lubricant pump and each axle subassembly of rocking arm transmission system, still communicates with each other with the oil drain port of high-speed end lubricant pump and low-speed end lubricant pump simultaneously.
2. The high-efficiency forced lubricating system with the circulating lubricating function for the coal mining machine as claimed in claim 1, wherein: the main oil duct is annular and is positioned at the upper part of the shell, the main oil duct extends and is arranged into a long strip shape along the length direction of the rocker arm where the main oil duct is positioned, the branch oil duct is a duct extending up and down, the upper end of the branch oil duct is communicated with the main oil duct, the lower end of the branch oil duct is opened on the surface of the inner wall of the transmission case, and the respective axes of the high-speed end lubricating pump, the low-speed end lubricating pump and each shaft assembly of the rocker arm transmission system are.
3. The high-efficiency forced lubricating system with the circulating lubricating function for the coal mining machine as claimed in claim 2, wherein: the multiple groups of branch oil passages are arranged in one-to-one correspondence with the high-speed end lubricating pump, the low-speed end lubricating pump and each shaft assembly of the rocker arm transmission system.
4. The high-efficiency forced lubricating system with the circulating lubricating function for the coal mining machine as claimed in claim 3, wherein: the high-speed end lubricating pump and the low-speed end lubricating pump both comprise a pump shell, a pump shaft, a pump gear, a distance pad and a mounting pad, wherein the pump shell is in a cup shape, one end of the pump shaft is supported in an inner hole at the sealing end of the pump shell through a first bearing, the other end of the pump shaft extends out of an open end of the pump shell, the pump gear and the distance pad are sequentially coaxially sleeved on the pump shaft and then supported on a transmission case shell through a second bearing, the pump gear is connected with the pump shaft through a key, the mounting pad is mounted in a mounting hole of the transmission case shell, the pump gear is axially limited by a shaft shoulder on the pump shaft and the distance pad, the second bearing is axially limited by the distance pad and the mounting pad, the shaft shoulder is embedded into the opening of the pump shell and is sealed from the open end of the pump shell, spiral blades are distributed on a shaft section between the shaft shoulder and a shaft neck where the first bearing, the side wall of the pump shell close to the sealing end is provided with a radial through hole, the radial through hole is formed into an oil discharge port of a corresponding lubricating pump, seals are respectively arranged on the front side and the rear side of the radial through hole between the mounting holes on the pump shell and the transmission case shell, the sealing end of the pump shell is arranged into a flange structure, the pump shell is detachably fixed on the transmission case shell through the flange structure, the side wall of the pump shell close to the opening end is provided with an opening, the opening is formed into an oil inlet of the corresponding lubricating pump, and pump gears of the high-speed end lubricating pump and the low-speed end lubricating pump are respectively externally meshed with a shaft gear of a shaft assembly of a rocker arm transmission system and an eight-shaft gear of.
5. The high-efficiency forced lubricating system with the circulating lubricating function for the coal mining machine as claimed in claim 4, wherein: the mounting pads of the high-speed end lubrication pump and the low-speed end lubrication pump are respectively mounted on the old pond side and the coal wall side of the respective second bearings.
6. The high-efficiency forced lubricating system with the circulating lubricating function for the coal mining machine as claimed in claim 5, wherein: the multiple groups of branch oil passages comprise ten groups of branch oil passages arranged at intervals along the length direction of the rocker arm; the first group of branch oil ducts are provided with two oil duct holes, wherein the lower end opening of the coal wall side oil duct hole is arranged on the wall of a mounting hole matched with a pump shell of the high-speed end lubricating pump and communicated with a corresponding radial through hole, and the lower end opening of the old pond side oil duct hole is arranged on the wall of a mounting hole of a second bearing of the high-speed end lubricating pump; the tenth group of branch oil ducts is provided with two oil duct holes, wherein the lower end opening of the coal wall side oil duct hole is arranged on the hole wall of the mounting hole of the second bearing of the low-speed end lubricating pump, and the lower end opening of the old pond side oil duct hole is arranged on the hole wall of the mounting hole matched with the pump shell of the low-speed end lubricating pump and communicated with the corresponding radial through hole.
7. The high-efficiency forced lubricating system with the circulating lubricating function for the coal mining machine as claimed in claim 6, wherein: the second, fourth, seventh and ninth groups of branch oil ducts are provided with two oil duct holes which respectively correspond to bearing positions of a shaft assembly, a six-shaft assembly and an eight-shaft assembly of the rocker arm transmission system, which are close to the coal wall side and the old pond side; the third, fifth, sixth and eighth groups of branch oil ducts are provided with an oil duct hole which respectively corresponds to the positions of the bearing groups in the middle of the two-shaft, four-shaft, five-shaft and seven-shaft components of the rocker arm transmission system.
8. The high-efficiency forced lubricating system with the circulating lubricating function for the coal mining machine as claimed in claim 7, wherein: the lower end openings of two oil passage holes of the second, fourth and ninth groups of branch oil passages are respectively positioned on the coal wall side of the first shaft, the third shaft and the eighth shaft and the hole wall of a bearing seat hole of the old pond side bearing, and the lower end openings of two oil passage holes of the seventh group of branch oil passages are respectively positioned on the hole wall of an installation hole of a coal wall side bearing of the six-shaft assembly and the inner wall of a transmission case shell on the coal wall side close to the old pond side bearing; the lower end openings of the oil passage holes of the third and fifth groups of branch oil passages are respectively positioned on the hole walls of the old pond side mounting holes of the wheel shafts of the two-shaft and four-shaft assemblies, the wheel shafts of the two-shaft and four-shaft assemblies are internally provided with hole passages for communicating the outer diameter of the old pond side wheel shaft with the mounting shaft neck of the middle bearing group, the lower end openings of the oil passage holes of the sixth group of branch oil passages are positioned on the hole walls of the mounting holes of the middle bearing group of the five-shaft assemblies, the lower end openings of the oil passage holes of the eighth group of branch oil passages are positioned on the hole walls of the coal wall side mounting holes of the wheel shafts of the seven-shaft assemblies, and the wheel shafts of the seven-shaft assemblies are internally provided with hole passages for communicating.
9. The high-efficiency forced lubricating system of the coal mining machine with the circulating lubricating function as claimed in claim 1, 2, 3, 4, 5, 6, 7 or 8, is characterized in that: the connecting parts of the branch oil ducts and the main oil duct, which lead to the lubricating points of the shaft assemblies of the high-speed end lubricating pump, the low-speed end lubricating pump and the rocker arm transmission system, are all provided with central oil plugs, the central oil plugs are provided with oil passing small holes, and the main oil ducts are communicated with the corresponding branch oil ducts through the corresponding oil passing small holes.
10. The high-efficiency forced lubricating system with the circulating lubricating function for the coal mining machine as claimed in claim 9, wherein: the top of the casing of rocking arm has been seted up the circulation lubrication groove, the circulation lubrication groove seals with the welding of oil groove apron and forms the main oil duct, the oil groove apron has the polylith and splices each other.
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| CN201921130322.2U CN210290702U (en) | 2019-07-18 | 2019-07-18 | High-efficient forced lubrication system of coal-winning machine with circulation lubricating function |
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| CN201921130322.2U CN210290702U (en) | 2019-07-18 | 2019-07-18 | High-efficient forced lubrication system of coal-winning machine with circulation lubricating function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259930A (en) * | 2019-07-18 | 2019-09-20 | 天地科技股份有限公司上海分公司 | The efficient enforced lubricating system of coalcutter with circulation lubricating function |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259930A (en) * | 2019-07-18 | 2019-09-20 | 天地科技股份有限公司上海分公司 | The efficient enforced lubricating system of coalcutter with circulation lubricating function |
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