Reduction gearbox and inside contraction wire stranding machine
阅读说明：本技术 减速箱及内收线捻股机 (Reduction gearbox and inside contraction wire stranding machine ) 是由 李玉峰 汤恒威 左树华 冯国兵 于 2020-07-03 设计创作，主要内容包括：本发明提供一种减速箱,适用于捻股机内收线机型,所述减速箱中设置相互啮合的涡轮和蜗杆,所述涡轮的直径为125mm,所述涡轮包括第一齿轮,所述蜗杆包括第二齿轮,所述第一齿轮和所述第二齿轮相互啮合；其中,所述第一齿轮的齿高和所述第二齿轮的齿高相等,分别为8mm。由于新的涡轮和蜗杆之间的接触面变大,使其能够承受高负载牵引；同时,增加涡轮的导程角、压力角、螺纹角来增加其轴向力,并使润滑液能更容易进入涡轮和蜗杆的齿轮相互啮合的工作面。因此,可显著提高减速箱的使用周期。(The invention provides a reduction gearbox which is suitable for a take-up machine type in a stranding machine, wherein a turbine and a worm which are meshed with each other are arranged in the reduction gearbox, the diameter of the turbine is 125mm, the turbine comprises a first gear, the worm comprises a second gear, and the first gear and the second gear are meshed with each other; wherein, the tooth height of the first gear is equal to that of the second gear, and the tooth heights are respectively 8 mm. The contact surface between the new worm wheel and the worm is enlarged, so that the worm can bear high-load traction; meanwhile, the lead angle, the pressure angle and the thread angle of the turbine are increased to increase the axial force of the turbine, and the lubricating fluid can more easily enter the working surfaces of the turbine and the worm, which are meshed with each other. Therefore, the service life of the reduction gearbox can be remarkably prolonged.)
1. A reduction gearbox is suitable for a take-up machine type in a stranding machine and is characterized in that,
a worm wheel and a worm are arranged in the reduction box, the worm wheel is 125mm in diameter and comprises a first gear, the worm comprises a second gear, and the first gear and the second gear are meshed with each other;
wherein, the tooth height of the first gear is equal to that of the second gear, and the tooth heights are respectively 8 mm.
2. The reduction gearbox according to claim 1, wherein the worm and the worm wheel are respectively right-handed in helical direction.
3. A reduction gearbox according to claim 1 wherein the first gear and the second gear are each helical-toothed gears.
4. A reduction gearbox according to claim 3 wherein the first gear has a module of 3.987; the number of teeth of the first gear is 31; the angle of the profile angle in the axial portion face of the first gear is 26 °.
5. A reduction gearbox according to claim 4 wherein the helix angle of the first gear is 40 degrees 30 minutes 32 seconds.
6. A reduction gearbox according to claim 3 wherein the second gear has a module of 3.987; the number of the heads of the second gear is 6; the angle of the profile angle in the axial portion face of the second gear is 26 °.
7. A reduction gearbox according to claim 6 wherein the helical lead angle of the second gear is 40 degrees 30 minutes 32 seconds.
8. A reduction gearbox according to claim 1, characterised in that the depth of the carburized flank layer of the second gear of the worm is 1.2-1.5 mm.
9. The reduction gearbox as set forth in claim 1, wherein the worm has a temper hardness of 280-300.
10. An inside take-up strander characterized in that it comprises a reduction gearbox according to any one of claims 1 to 9.
Technical Field
The invention relates to a reduction gearbox, in particular to an improvement of a take-up reduction gearbox in a stranding machine in steel cord manufacturing equipment.
Background
At present, the take-up machine type DTS \ DTU \ DTU-2\ DTS-2 adopted by the applicant during the production of the steel cord is pulled by using an internal take-up reduction box, the structure of the steel cord is changed along with the change of market requirements, particularly the requirement of a thick steel cord is increased day by day, wherein the take-up machine type DTS-2 in the stranding machine is applied to 12 monofilaments, 15 monofilaments, 16 monofilaments, 19 monofilaments to 27 monofilament steel cords as an example, under the influence of the tension of the monofilaments and a core machine, the number of the monofilaments needing to be pulled by the reduction box is increased, the traction tension is increased, the reduction box in the stranding machine is damaged more in the existing period, and the maintenance cost is higher.
With the increase of high-strength and ultrahigh-strength steel cord products, the maintenance cost of a reduction gearbox in a take-up machine type in a stranding machine also shows an increasing trend, normal production is influenced, and the maintenance cost is increased.
In view of the above, there is a need for an improvement to a reduction gearbox in a take-up machine type in an existing stranding machine, so that the reduction gearbox can meet the normal production of high-strength and ultrahigh-strength steel cord products, and simultaneously reduce equipment failure and maintenance cost.
Disclosure of Invention
Aiming at the technical problem, the invention provides a reduction gearbox which is suitable for a take-up machine type in a stranding machine, wherein a turbine and a worm which are meshed with each other are arranged in the reduction gearbox, the diameter of the turbine is 125mm, the turbine comprises a first gear, the worm comprises a second gear, and the first gear and the second gear are meshed with each other; wherein, the tooth height of the first gear is equal to that of the second gear, and the tooth heights are respectively 8 mm.
As an optional technical solution, the spiral directions of the worm and the worm wheel are right-handed respectively.
As an alternative solution, the first gear and the second gear are helical gears, respectively.
As an optional technical solution, the module of the first gear is 3.987; the number of teeth of the first gear is 31; the angle of the profile angle in the axial portion face of the first gear is 26 °.
As an alternative solution, the helix angle of the first gear is 40 degrees, 30 minutes and 32 seconds.
As an optional technical solution, the modulus of the second gear is 3.987; the number of the heads of the second gear is 6; the angle of the profile angle in the axial portion face of the second gear is 26 °.
As an alternative solution, the helical lead angle of the second gear is 40 degrees, 30 minutes and 32 seconds.
As an optional technical scheme, the tooth surface carburized layer depth of the second gear of the worm is 1.2-1.5 mm.
As an optional technical scheme, the hardening and tempering hardness of the worm is 280-300.
The invention also provides an inside thread take-up strander which comprises the reduction gearbox.
Compared with the prior art, the reduction gearbox and the internal take-up strander thereof have the beneficial effects that:
1. the worm wheel 14 and the worm 18 with the tooth height of 8mm and the worm wheel 14 with the diameter of 125mm are applied to the speed reducer of the existing steel cord internal take-up strander for producing 27CC (dense) 265ST (ultra-high strength) specification, and the new worm wheel and the worm can bear high load traction due to the fact that the contact surface between the new worm wheel and the new worm is enlarged; meanwhile, the lead angle, the pressure angle and the thread angle of the turbine are increased to increase the axial force of the turbine, and the lubricating fluid can more easily enter the working surfaces of the turbine and the worm, which are meshed with each other. Therefore, the service life of the reduction gearbox can be remarkably prolonged. At present, the service life of the reduction gearbox in the new adduction-stranding machine is improved from 8 days to 7 months at least, and is expected to be prolonged to 9 months.
2. Because the service cycle of the new adduction-stranding machine is obviously prolonged, the labor time can be effectively saved, and the labor efficiency is improved.
3. The usage of other related spare parts in the reduction gearbox is reduced, and the usage of the spare parts such as a turbine shaft, an FAG32011 bearing, an FAG32013 bearing and the like related to the reduction gearbox is reduced along with the increase of the service life of the turbine and the worm of the reduction gearbox.
4. The reduction gearbox turbine worm has obvious service life, can correspondingly reduce the time for maintaining and stopping the machine tool, and improves the utilization rate of the machine tool.
5. The replacement frequency of the worm and the worm of the worm wheel of the reduction gearbox is reduced from 8 days to 9 months, so that the stability of the equipment is improved, and the potential quality hazards of oil stain, lay length, meter counting and the like caused by the faults of the reduction gearbox are reduced.
6. Because only the worm wheel and the worm in the speed reducer of the existing internal take-up strander are replaced, other parts of the internal take-up strander do not need to be modified, and the popularization is strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 to 4 are schematic cross-sectional views of different regions of a reduction gearbox according to an embodiment of the invention.
Fig. 5 is a schematic view of the copper bar 13.
Description of reference numerals:
a reduction gearbox 1; a screw 2; a reduction gearbox oil cover 3; a traction wheel shaft locking nut 4; the exchange teeth 5; a double-shaft cover plate 6; an exchange gear shaft 7; m25 lock nut 8; a traction wheel shaft 9; 44, a toothed disc 10; an upper cover plate 11; a lower cover plate 12; a copper rod 13; a turbine 14; a 3-hole cover plate 15; a 4-hole cover plate 16; an input shaft 17; a worm 18; m16 lock nut 19; 55 a
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 5, the invention provides a reduction gearbox 1 which is suitable for a take-up machine type in a stranding machine, wherein a turbine 14 and a worm 18 which are meshed with each other are arranged in the reduction gearbox 1, the diameter of the turbine 14 is 125mm, the turbine 14 comprises a first gear, and the worm 18 comprises a second gear; wherein, first gear and second gear intermeshing, the tooth height of first gear and the tooth height of second gear are equal, are 8mm respectively.
In the present embodiment, the spiral directions of the worm 18 and the worm wheel 14 are right-handed; the first gear and the second gear are helical-toothed gears, respectively.
In a preferred embodiment, the first gear on the turbine 14 has a module number of 3.987; the number of teeth of the first gear is 31; the angle of the tooth profile angle in the axial part surface of the first gear is 26 degrees; the helix angle of the first gear is 40 degrees, 30 minutes and 32 seconds.
In a preferred embodiment, the second gear on the worm 18 has a module of 3.987; the number of the heads of the second gear is 6; the angle of the tooth profile angle in the axial part surface of the second gear is 26 degrees; the helical lead angle of the second gear is 40 degrees 30 minutes 32 seconds.
In a preferred embodiment, the tooth flanks of the second gear of the worm 18 are carburized to increase the strength of the second gear, wherein the depth of the carburized layer formed on the tooth flanks of the second gear is 1.2 to 1.5 mm.
In a preferred embodiment, a portion of the surface of the worm 18 (the surface on which the gear is not provided) is surface treated, in particular: HRC60-62 for surface quenching and HB280-300 for hardening and tempering hardness.
The invention also provides an inside thread take-up strander which comprises the reduction gearbox.
As shown in fig. 1 to 5, the specific process of replacing the old worm wheel and the old worm in the existing reduction gearbox 1 with the new worm wheel 14 and the new worm 18 is as follows:
after the reduction gearbox 1 is disassembled from a machine tool, a screw 2 for fixing the reduction gearbox oil cover 3 is disassembled, a traction wheel shaft locking nut 4 is disassembled, the exchange teeth 5 are disassembled, the screw 2 for fixing the double-shaft cover plate 6 is disassembled, 2 exchange wheel shafts 7 are disassembled, an M25 locking nut 8 of the traction wheel shaft 9 is disassembled, the traction wheel shaft 9 is taken out, a 44 fluted disc 10 fixed on the wheel shaft is disassembled, the reduction gearbox 1 is filled with oil, after the oil is cleared, the screw 2 of an upper cover plate 11 of the reduction gearbox 1 is disassembled, the upper cover plate 11 is removed, a fixing screw of a lower cover plate 12 of the reduction gearbox 1 is disassembled, the old worm wheel (the diameter is 133mm, the tooth height is 6 mm) is taken out by a copper rod 13, then a 3-hole cover plate 15 and a 4-hole cover plate 16 on the side surface of the reduction gearbox 1 are disassembled, an input shaft 17 and an M16 locking nut 19 on, then the 55-
The new worm wheel 14 and the worm 18 provided by the invention are assembled in the existing reduction gearbox 1 with the old worm wheel and the old worm removed, wherein the diameter of the worm wheel 14 is 125mm, the tooth height of a first gear is 8mm, and the tooth height of a second gear of the worm 18 is 8 mm. Due to the fact that the diameter of the worm wheel 14 is reduced, and the tooth heights of the worm wheel 14 and the worm 18 are increased, when the first gear of the worm wheel 14 and the second gear of the worm 18 are meshed, the mutual contact area is increased, and higher load traction can be borne.
Additionally, the first gear on the turbine 14 has a module of 3.987; the number of teeth of the first gear is 31; the angle of the tooth profile angle in the axial part surface of the first gear is 26 degrees; the helix angle of the first gear is 40 degrees, 30 minutes and 32 seconds; that is, the lead angle 22, the pressure angle 23, and the thread angle 24 of the worm wheel 14 are increased, respectively, and the axial force thereof is increased, so that the lubricating fluid is forced to enter the tooth surfaces or the working surfaces where the worm wheel 14 and the worm 18 are engaged with each other, and further, the worm wheel 14 and the worm 18 can have a long service life even when they are subjected to a high load traction.
The process of assembling the new worm wheel 14 and worm 18 is the same as that of the existing reduction gearbox 1 described above, in reverse order and operation to the disassembly of the old worm wheel and worm in the existing reduction gearbox 1.
The reduction gearbox provided by the invention has the beneficial effects that:
1. the worm wheel 14 and the worm 18 with the tooth height of 8mm and the worm wheel 14 with the diameter of 125mm are applied to the speed reducer of the existing steel cord internal take-up strander for producing 27CC (dense) 265ST (ultra-high strength) specification, and the new worm wheel and the worm can bear high load traction due to the fact that the contact surface between the new worm wheel and the new worm is enlarged; meanwhile, the lead angle, the pressure angle and the thread angle of the turbine are increased to increase the axial force of the turbine, and the lubricating fluid can more easily enter the working surfaces of the turbine and the worm, which are meshed with each other. Therefore, the service life of the reduction gearbox can be remarkably prolonged. At present, the service life of the reduction gearbox in the new adduction-stranding machine is improved from 8 days to 7 months at least, and is expected to be prolonged to 9 months.
2. Because the service cycle of the new adduction-stranding machine is obviously prolonged, the labor time can be effectively saved, and the labor efficiency is improved.
3. The usage of other related spare parts in the reduction gearbox is reduced, and the usage of the spare parts such as a turbine shaft, an FAG32011 bearing, an FAG32013 bearing and the like related to the reduction gearbox is reduced along with the increase of the service life of the turbine and the worm of the reduction gearbox.
4. The reduction gearbox turbine worm has obvious service life, can correspondingly reduce the time for maintaining and stopping the machine tool, and improves the utilization rate of the machine tool.
5. The replacement frequency of the worm and the worm of the worm wheel of the reduction gearbox is reduced from 8 days to 9 months, so that the stability of the equipment is improved, and the potential quality hazards of oil stain, lay length, meter counting and the like caused by the faults of the reduction gearbox are reduced.
6. Because only the worm wheel and the worm in the speed reducer of the existing internal take-up strander are replaced, other parts of the internal take-up strander do not need to be modified, and the popularization is strong.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. Furthermore, the technical features mentioned in the different embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
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