WO2015097706A1 - Boîte de vitesses - Google Patents

Boîte de vitesses Download PDF

Info

Publication number
WO2015097706A1
WO2015097706A1 PCT/IN2013/000786 IN2013000786W WO2015097706A1 WO 2015097706 A1 WO2015097706 A1 WO 2015097706A1 IN 2013000786 W IN2013000786 W IN 2013000786W WO 2015097706 A1 WO2015097706 A1 WO 2015097706A1
Authority
WO
WIPO (PCT)
Prior art keywords
pair
shaft
bearings
housing
opening
Prior art date
Application number
PCT/IN2013/000786
Other languages
English (en)
Inventor
Sundarlal Kalolia NIKHIL
Original Assignee
Nikhil Sundarlal Kalolia
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 Nikhil Sundarlal Kalolia filed Critical Nikhil Sundarlal Kalolia
Priority to PCT/IN2013/000786 priority Critical patent/WO2015097706A1/fr
Publication of WO2015097706A1 publication Critical patent/WO2015097706A1/fr

Links

Classifications

    • 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
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • 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
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
    • 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
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02069—Gearboxes for particular applications for industrial applications

Definitions

  • the present invention generally relates to gear systems. More particularly, the invention relates to a gear box.
  • Gear systems are used in number of applications including transportation, construction, quarrying, mining, etc.
  • Some basic parts of the gear system are gear wheel having cut teeth, bearings, shafts, etc.
  • a mechanical advantage is produced with both rotational speeds and torque.
  • flexible couplings, especially gear couplings can exert substantial axial and radial loads, i.e. overload, sufficient in some cases to damage bearings, gears, shafts and other parts as well.
  • gear wheel due to radial and axial loads on the gear system, most of the load is concentrated on the gear wheel. Due to which the gear wheel undergoes misalignment. Since the gear wheel meshes with one or more parts of the gear system, arrangement of the gear wheel with the other parts undergoes displacement as well, hence gear tooth failure occurs. Further, even due to thin tooth geometry of the gear wheel frequent gear tooth failure occurs. Therefore, the gear wheel has to be replaced time and again, which may prove to be expensive.
  • the gear system needs to be protected from external surroundings for maintaining efficiency. Even minute interferences between the gear system and the external surroundings affect output generated at the gear system substantially. Further, the gear system operating in different environments is exposed to the external surroundings. Due to the exposure, lot of dust and moisture get accumulated inside the gear system, thereby creating friction between different parts of the gear system. Friction hinders movement of the different parts of the gear system and thereby decreasing efficiency of the gear system.
  • gear system is completely lubricated with oil for reducing friction between different parts. Since gear systems operate at varying speeds, environments, load and vibrations, due to which oil leakage is observed within and outside the gear system. Due to oil leakage, loss of lubrication occurs between elements in the gear system, which further increases friction between the elements. Furthermore, friction also contributes to rust formation in the gear systems. In view of the same, oil should be refilled quite often.
  • the bearings provided in the gear system facilitate in rotation of different elements within the gear system.
  • the bearings have been found to be quite sensitive to various effects, including misalignment, debris, lubrication deficiencies, contamination, vibration and shock load. They are also susceptible to damage from excessive forces used during fitting of couplings etc.
  • some of the parts of the gear system which are in standby or stationery position coupled to the bearings can suffer bearing damage due to vibrations.
  • An objective of the invention is to provide a gear box which reduces load on gear systems.
  • Another objective of the invention is to provide a gear box which prevents gear tooth failure.
  • Yet another objective of the invention is to provide a gear box which prevents dust and other contaminants from entering into gear systems.
  • Yet another objective of the invention is to provide a gear box which prevents oil leakage.
  • the invention provides a gear box which includes a single-piece housing having a first pair of opening on opposite side of the housing for adapting a first shaft, a gear wheel is mounted on the first shaft, a second pair of opening is disposed below the first opening for adapting a second shaft, the second shaft is operatively coupled to the gear wheel mounted on the first shaft, the rotation of the second shaft transmits torque to the first shaft and reduces speed of the first shaft, a first pair of bearings is provided on both sides of the first shaft on the first pair of opening, the first pair of bearings enables the first shaft to rotate and a second pair of bearings is provided on both sides of the second shaft on the second pair of opening, the second pair of bearings enables the second shaft to rotate, the first pair of bearings and the second pair of bearings transfers radial and axial load produced by the rotation of the shafts to the housing.
  • Figure 1 shows a gear box in accordance to an embodiment of the invention.
  • Figure 2 shows a single piece housing of the gear box in accordance to an embodiment of the invention.
  • Various embodiments of the invention provide a gear box for stone quarrying application, the gear box comprising a single-piece housing having a first pair of opening on opposite side of the housing for adapting' a first shaft, a gear, wheel is mounted on the first shaft, a second pair of opening is disposed below the first pair of opening for adapting a second shaft, the second shaft is operatively coupled to the gear wheel mounted on the first shaft, the rotation of the second shaft transmits torque to the first shaft and reduces speed of the first shaft, a first pair of bearings is.
  • the first pair of bearings enables the first shaft to rotate and a second pair of bearings is provided on both sides of the second shaft on the second pair of opening, the second pair of bearings enables the second shaft to rotate, wherein the first pair of bearings and the second pair of bearings transfers radial and axial load produced by the rotation of the shafts to the housing.
  • Fig. 1 shows a gear box 100 in accordance to an embodiment of the invention.
  • Gear box 100 includes a single piece housing 102, a gear wheel 104, a first shaft 106, a first pair of bearings 108, a second shaft 110, a second pair of bearings 2, a first pair of bearing covers 1 14, a second pair of bearing covers 1 6, a first pair of oil seals 1 18, a second pair of oil seals 120 and a housing cover 122.
  • housing 102 has a first pair of opening 130 on opposite side of housing 102 for adapting first shaft106.
  • Housing 02 of gear box 100 has ribs (not shown) to transmit heat which is generated inside housing 102 of gearbox TOO to outside environment, thereby enhancing thermal capacity of gear box 100.
  • Further housing 102 of gear box 100 acts as an oil reservoir for gear box 100.
  • Different parts of gear box 100 including gear wheel 104, first shaft 106, second shaft 1 10, first pair of bearings 108 and second pair of b3 ⁇ 4arings 112 respectively are lubricated with oil through splash lubrication method in housing 102.
  • housing 102 is provided with lifting lugs for easy lifting and fitment of gearbox 100.
  • gear wheel 104 is mounted on first shaft 106.
  • Gear wheel 104 has plurality of teeth like projections on its circumference therein.
  • the teeth like projections of gear wheel 104 meshes with another toothed part in order to transmit torque.
  • range of tooth geometry selected is between 2mm and 5mm for providing safety against tooth bending and thereby reducing gear tooth failure of gear wheel 104.
  • gear wheel 104 is case hardened using either iron or steel materials to absorb shock load and also to increase life of gear wheel 104.
  • Gear wheel 104 is mounted on first shaft 106, wherein gear wheel 104 of gear box 100 is coupled via suitable means such as bolts with first shaft 106.
  • First shaft 106 is a hollow shaft.
  • First shaft 106 receives a machine shaft.
  • a taper bushing assembly is used for mounting and dismounting gear box 100 from the machine shaft.
  • first shaft 106 is a flange-type adapter shaft.
  • first shaft 106 is rotatably supported by first pair of bearings 108 on first pair of opening 130.
  • First pair of bearings 108 is provided on both sides of first shaft 106 on housing 102.
  • First pair of bearings 108 enables first shaft 106 to rotate transferring radial and axial load to housing 102.
  • first pair of bearings 108 are supported by first pair of bearing covers 114.
  • first pair of bearing covers 1 14 is adapted at first pair of opening 130 on both sides of housing 102.
  • First pair of bearing covers 1 4 is coupled to housing 102 via suitable means such as bolts.
  • First pair of bearing covers 1 14 provides support to first pair of bearings 108 and prevents axial movement of first pair of bearings 108.
  • first pair of bearing covers 1 14 is hollow allowing first shaft 106 to pass through it.
  • second shaft 10 is adapted at a second pair of opening 132 on housing 102.
  • Second shaft 1 0 is provided below first shaft 106 and is operatively coupled to gear wheel 104.
  • Second shaft 1 10 is provided with teeth like projections on its circumference therein. The teeth like projections of second shaft 110 meshes with the teeth like projections of gear wheel 104.
  • second shaft 10 is a pulley shaft.
  • second shaft 110 is rotatably supported by second pair of bearings 1 12 in housing 102.
  • second pair of bearings 1 12 is provided on both sides of second shaft 110 on second pair of opening 132.
  • Second pair of bearings 112 enables second shaft 110 to rotate transferring radial and axial load to housing 102.
  • second pair of bearings 1 12 are supported by second pair of bearing covers 1 6.
  • second pair of bearing covers 116 is adapted at second pair of opening 132 on both sides of housing 102.
  • Second pair of bearing covers 1 16 is coupled to housing 102 via suitable means such as bolts.
  • Second pair of bearing covers 1 16 provides support to second pair of bearings 1 12 and prevents axial movement of second pair of bearings 1 12.
  • one bearing cover of second pair of bearings 1 2 is hollow and another bearing cover is blind.
  • gear box 100 comprises a first pair of oil seals 1 18 and a second pair of oil seals 120.
  • First pair of oil seals 1 18 is configured to be fitted over first pair of bearing covers 1 14. First pair of oil seals 1 18 prevents oil leakage from inside housing 102.
  • first pair of oil seals 1 8 is a double lip seal type oil seal which in addition to preventing oil spillage also prevents dust and other contaminants from entering housing 102 of gear box 100.
  • Second pair of oil seals 120 is configured to be fitted over second pair of bearing covers 1 16. Second pair of oil seals 120 prevents oil leakage from housing 102.
  • second pair of oil seals 20 is a double lip seal type oil seal which in addition to preventing oil spillage also prevents dust and other contaminants from entering into housing 102 of gear box 100.
  • a first pair of circlips 134 is adapted at first shaft 106. Further a second pair of circlips 136 is adapted at second shaft 1 10 of gearbox 100. Circlips is provided close to oil seals, thereby preventing lateral movement of first pair of oil seals 1 8 and second pair of oil seals 120.
  • gear box 100 comprises of housing cover 122 wherein housing cover 122 is configured to be adapted to the top of housing 102. Housing cover 122 is removable and is used for inspection of internal parts of gear box 100. Further housing cover 122 has an air plug 124. Air plug 124 is removable allowing hot oil fumes from inside of gear box 00 to escape when the air plug 124 is removed.
  • gear box 100 comprises of an oil level indicator 126.
  • Oil level indicator 126 is provided on housing 102 which monitors oil levels inside gear box 100 and accordingly indicates oil level in gear box 100.
  • a jack screw 28 is adapted to housing 102 of gear box 100: Jack screw 128 is coupled to gear box 100 at one end and a machine structure at the other end. Jack screw 128 works as a torque arm which prevents rotation of gearbox 100 during operation.
  • second shaft 110 is operatively coupled with gear wheel 104 mounted on first shaft 106, wherein rotation of second shaft 110 transmits torque to first shaft 106 through gear wheel 104. Further, speed is also reduced through the plurality of teeth provided on circumference of gear wheel 104. Also, first pair of bearing 108 provided on first shaft 106 on housing 02 and second pair of bearings 1 2 provided on second shaft 110 on housing 102 transfers radial and axial load to housing 102.
  • loads including axial and radial loads generated by rotation of gear wheel 104, first shaft 106 and second shaft 10 are transmitted to housing 102 via first pair of bearings 108 and second pair of bearings 112 respectively.
  • gear box 100 is used in stone quarrying application, wherein a belt drive mechanism is employed between gearbox 100 and a motor , wherein one pulley is mounted on second shaft 1 10 and other pulley is mounted on motor shaft via a belt.
  • the rotation of the motor drives second shaft 1 10 via the belt.
  • first shaft 106 is connected to a conveyor belt mechanism.
  • the conveyor belt carries heap of stones from one end to another.
  • the rotation of second shaft 1 10 rotates first .
  • shaft 106 transmitting torque to first shaft 106 thereby reducing speed of first shaft 106.
  • the belt drive mechanism prevents, any kind of damage to gear box 100 due to increased load.
  • a backstop 38 is adapted at second shaft 10 to prevent rotation of motor in reverse direction.
  • backstop 138 prevents motor failure, since speed of motor in reverse direction is very high.
  • Gearbox provided with lifting lugs for easy lifting and fitment with machine shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

La présente invention porte sur une boîte de vitesses. La boîte de vitesses comprend un boîtier en une seule pièce qui possède une paire d'ouvertures sur des côtés opposés du boîtier pour l'adaptation d'un premier arbre, une roue dentée étant montée sur le premier arbre, une seconde paire d'ouvertures étant disposées en dessous de la première paire d'ouvertures pour l'adaptation d'un second arbre, le second arbre étant couplé à la roue denté montée sur le premier arbre, une première paire de paliers étant situés des deux côtés du premier arbre sur le boîtier, la première paire de paliers permettant au premier arbre de tourner, et une seconde paire de paliers étant situés des deux côtés du second arbre sur le boîtier, la seconde paire de paliers permettant au second arbre de tourner et transférant une charge radiale et axiale au boîtier.
PCT/IN2013/000786 2013-12-23 2013-12-23 Boîte de vitesses WO2015097706A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IN2013/000786 WO2015097706A1 (fr) 2013-12-23 2013-12-23 Boîte de vitesses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IN2013/000786 WO2015097706A1 (fr) 2013-12-23 2013-12-23 Boîte de vitesses

Publications (1)

Publication Number Publication Date
WO2015097706A1 true WO2015097706A1 (fr) 2015-07-02

Family

ID=50073242

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2013/000786 WO2015097706A1 (fr) 2013-12-23 2013-12-23 Boîte de vitesses

Country Status (1)

Country Link
WO (1) WO2015097706A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111706663A (zh) * 2020-07-09 2020-09-25 南京高速齿轮制造有限公司 一种齿轮箱

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202172595U (zh) * 2011-06-04 2012-03-28 南昌江铃集团协和传动技术有限公司 玉米机切碎器传动齿轮箱
CN102954150A (zh) * 2011-08-25 2013-03-06 溧阳市振和机械制造有限公司 生物质制粒机传动箱总成

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202172595U (zh) * 2011-06-04 2012-03-28 南昌江铃集团协和传动技术有限公司 玉米机切碎器传动齿轮箱
CN102954150A (zh) * 2011-08-25 2013-03-06 溧阳市振和机械制造有限公司 生物质制粒机传动箱总成

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111706663A (zh) * 2020-07-09 2020-09-25 南京高速齿轮制造有限公司 一种齿轮箱

Similar Documents

Publication Publication Date Title
EP2375067A1 (fr) Plaque bogie pour éolienne
CN102032157A (zh) 螺杆泵地面驱动装置
WO2015097706A1 (fr) Boîte de vitesses
KR101469372B1 (ko) 철도 차량용 커플링
WO2009098148A1 (fr) Dispositif de protection de couple et ensemble transmission de couple
EP3118454A1 (fr) Dispositif de production d'énergie et dispositif d'accouplement d'arbre utilisé dedans
KR102628300B1 (ko) 전기 드라이브
KR20190039311A (ko) 감속기, 동력시스템, 스트래들 타입 레일 트레인, 및 레일 운송 시스템
JP5750713B2 (ja) 摩擦式べべルリングギア
CN212480089U (zh) 太阳轮轴向限位结构及行星齿轮机构
CN101520081B (zh) 一种自动分向传动机构
CN110758998B (zh) 一种逆止器及具有其的永磁滚筒
JP2008190609A (ja) 減速装置およびそれを備えたロボット装置
CN210440535U (zh) 一种复合齿轮箱
KR101215001B1 (ko) 오일 씰 및 회전장치
CN203431100U (zh) 一种能够承受较大轴向力和较大角偏移的直交轴减速机
AU2017377010B2 (en) Driving arrangement for a heavy-duty grinding mill and heavy-duty grinding mill
CN215206867U (zh) 一种润滑脂润滑的电动滚筒
CN217977285U (zh) 一种新型减速机
JP2008014442A (ja) 自己給油型転がり軸受
CN221170993U (zh) 一种伺服驱动
CN212323868U (zh) 减速电机密封结构
CN110758997B (zh) 一种双向旋转逆止器及具有其的永磁滚筒
CN202338508U (zh) 立式高速离心泵
CN210153177U (zh) 一种谐波减速器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13828995

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13828995

Country of ref document: EP

Kind code of ref document: A1