KR20170033014A - Traveling decelerator for working machine and working machine having the traveling decelerator - Google Patents

Traveling decelerator for working machine and working machine having the traveling decelerator Download PDF

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Publication number
KR20170033014A
KR20170033014A KR1020150130791A KR20150130791A KR20170033014A KR 20170033014 A KR20170033014 A KR 20170033014A KR 1020150130791 A KR1020150130791 A KR 1020150130791A KR 20150130791 A KR20150130791 A KR 20150130791A KR 20170033014 A KR20170033014 A KR 20170033014A
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KR
South Korea
Prior art keywords
gear
gear oil
guide plate
metal particles
impurities
Prior art date
Application number
KR1020150130791A
Other languages
Korean (ko)
Inventor
강병익
유재형
김경환
Original Assignee
현대중공업 주식회사
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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150130791A priority Critical patent/KR20170033014A/en
Publication of KR20170033014A publication Critical patent/KR20170033014A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
    • 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
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • 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
    • 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
    • F16H57/032—Gearboxes; Mounting gearing therein characterised by the materials used

Abstract

The present invention relates to a driving decelerator for a work machine and a work machine including the same. According to the present invention, the driving decelerator for a work machine comprises: a housing rotatably supported on a rotary hydraulic motor to be assembled, wherein gear oil is injected thereinto; a sun gear linked and mounted on the rotary hydraulic gear; a reduction gear group which is formed by a combination of a plurality of planetary gears and carriers, and decelerates power of the sun gear; a main body which receives power of the reduction gear group to rotate the housing, and has a chamber in which the sun gear and the reduction gear group are arranged; and a cover which is separated or mounted on the main body while sealing the chamber. The cover includes a guide plate which has a magnet disposed on an edge portion thereof to collect metal particles and impurities contained in the gear oil, and has a block shape to guide the metal particles and the impurities moved towards the cover by a centrifugal force generated when the planetary gears revolve to the magnet.

Description

TECHNICAL FIELD [0001] The present invention relates to a driving decelerator for a working machine, and a working machine including the same. BACKGROUND OF THE INVENTION [0002]

The present invention relates to a driving decelerator for a working machine and a working machine including the same.

A variety of working machines are used at work sites such as construction sites or civil engineering sites. Work machines will have appropriate mechanical structure and performance for each type of work such as roads, rivers, harbors, railways, and plants. That is, due to the diversity of work performed in the industrial field, the working machine can be classified into excavation equipment, loading equipment, conveying equipment, loading equipment, compaction equipment, foundation equipment and the like. Specifically, excavator, wheel loader, forklift, It is a concept that includes a considerable variety of equipment such as trucks, rollers, cranes, and the like.

Such a work machine is provided with a drive system for driving the vehicle.

The drive system includes a hydraulic pump for generating a pressurized oil by using a diesel engine or a gasoline engine as a drive source, a hydraulic control valve for controlling the direction and flow of pressurized oil, and a hydraulic actuator for mechanically working.

The driving system includes a traveling device for traveling the vehicle. The traveling device includes a rotary hydraulic motor for generating a rotary force by the pressure of the hydraulic pump, a traveling speed reducer for decelerating the rotation of the rotary hydraulic motor in a proper state, And the rotary hydraulic motor and the traveling speed reducer are usually integrally combined with each other.

The structure of the driving decelerator includes a housing assembled to be rotatably supported by a rotary hydraulic motor, a sun gear that extends straight and extends in a straight line with the output shaft of the rotary hydraulic motor, and a sun gear, A plurality of planetary gears for rotating the planetary gears, and a plurality of reduction gears that are combined with a carrier or the like.

The ring gear is integrally fixed to the housing and has a body in which a gear reducer group for transmitting the power of the sun gear and the sun gear to the housing is incorporated therein and a chamber in which the gear oil is contained and a chamber in which the sun gear and the reduction gear group are housed And a cover which is integrally joined to or separated from the main body.

The cover is provided with a gear oil hole for inserting and discharging the gear oil into the inside of the traveling speed reducer or for checking the amount of the injected gear oil. The gear oil hole is configured to be opened and closed by the gear oil cap.

When the sun gear is rotated by the output shaft of the rotary hydraulic motor, the speed reducer of the combination of the planetary gears and the carrier is interlocked and the rotation speed of the sun gear is reduced while the ring gear is integrally coupled The housing rotates at an appropriate rotational speed as it outputs to the housing.

However, such a traveling speed reducer wears due to rolling friction as the sun gear and the planetary gear of the speed reducer group, which are coupled to each other in operation, engage with the coupling parts of the carrier and the ring gear and rotate to generate fine metal particles and impurities. The metal particles and the impurities are floated together with the gear oil, and are in contact with the bearings or gear oil seals inside the drive reducer, thereby causing wear on the bearings and the gear oil seal, thus adversely affecting the drive reducer.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a gear reducer which is capable of easily removing metal particles and impurities contained in gear oil injected into a gear reducer And a work machine including the same.

It is also an object of the present invention to provide a driving decelerator for a work machine and a work machine including the same that can facilitate the maintenance of the driving decelerator and extend the service life of the driving decelerator.

Also, an object of the present invention is to provide a driving decelerator for a work machine and a work machine including the same, which can reduce an apparatus for removing metal particles and impurities and a time consuming to increase equipment operation time and equipment maintenance cost will be.

A driving decelerator of a working machine according to one aspect of the present invention includes: a housing rotatably supported by a rotary hydraulic motor and assembled therein; A sun gear coupled to the rotary hydraulic motor; A reduction gear unit that is composed of a combination of a plurality of planetary gears and a carrier and decelerates the power of the sun gear; And a cover which is coupled to or detached from the main body while sealing the chamber, wherein the main body is provided with a chamber in which the sun gear and the reducer group are housed, The cover is provided with a metal particle contained in the gear oil and a magnet for collecting the impurity at an edge portion thereof so as to guide the metal particles and impurities moved toward the cover by the centrifugal force generated when the planetary gear rotates, And a guide plate having a convex shape.

Specifically, the cover includes: a fastening plate having a plurality of fastening holes formed to be fixedly coupled to the main body by fastening members; A rim formed along an outer circumferential surface of the fastening plate, the rim receiving the body; A guide plate continuously formed on an inner circumferential surface of the fastening plate and sealing the chamber; And a gear oil hole formed in a boundary portion between the fastening plate and the guide plate and being opened and closed by a gear oil cap.

Specifically, the magnet may be provided continuously or discontinuously at a boundary portion between the fastening plate and the guide plate, and may be detachably attached.

Specifically, the magnet may be formed around the gear oil hole.

Specifically, the magnet may further be provided in the gear oil cap in contact with the gear oil.

Specifically, a collecting passage for collecting metal particles and impurities may be further formed at a boundary portion between the fastening plate and the guide plate.

Specifically, the collecting passage may be in the form of a trench.

Specifically, the collecting passage may be configured to connect a plurality of the gear oil holes.

Specifically, the magnet may be provided inside the collecting passage.

The working machine according to another aspect of the present invention may include the driving decelerator described above.

In the traveling speed reducer of the working machine and the working machine including the same according to the present invention, the sectional shape of the guide plate is formed in a convex shape, so that the planetary gear of the speed reducer group is guided in the gear oil which is moved toward the guide plate by centrifugal force, The contained metal particles and impurities can be moved to the magnets positioned at the edges due to the shape of the guide plate, so that the metal particles and the impurities can be easily collected.

Further, in the traveling speed reducer of the working machine and the working machine including the same according to the present invention, the trench-like collecting passage is formed along the edge of the guide plate and the magnet is provided in the collecting passage, It is possible to prevent the trapped metal particles and the impurities from being discharged to the clean gear oil.

Further, the traveling speed reducer of the working machine and the working machine including the same according to the present invention form a collecting passage in which magnets are provided around the gear oil passage for confirming the amount of the gear oil injected and discharged or the amount of the injected gear oil Whereby the metal particles and impurities captured by the magnets can be easily removed through the gear oil holes.

Further, in the traveling speed reducer of the working machine according to the present invention, the removal of metal particles and the replacement of the magnet can be facilitated by making the magnet detachable.

Further, in the traveling speed reducer of the working machine according to the present invention, by using the centrifugal force generated when the planetary gears revolve, the moving power of the metal particles and the impurities can be easily collected, There is no need to use power.

In addition, the driving decelerator of the working machine according to the present invention can reduce the work of removing metal particles and impurities for long-term use of the equipment, can increase equipment operation time, and can reduce equipment maintenance cost.

Further, since the traveling speed reducer of the working machine according to the present invention can easily collect or remove metal particles and impurities, metal particles and impurities do not exist between the gears during power transmission, Reliability can be assured to the consumer.

1 is a sectional view of a driving decelerator of a working machine according to an embodiment of the present invention.
Fig. 2 is an inner perspective view of the drive decelerator cover of Fig. 1;
Fig. 3 is a perspective view of the drive decelerator cover of Fig. 2 viewed from the opposite direction.
Fig. 4 is a perspective view of the drive decelerator cover of Fig. 2 viewed from the front. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view of the inside of the driving decelerator cover of FIG. 1; FIG. 3 is a perspective view of the driving decelerator cover of FIG. 2 seen from the opposite direction; And FIG. 4 is a perspective view of the driving decelerator cover of FIG. 2 viewed from the front.

1 to 4, a driving decelerator 1 of a working machine according to an embodiment of the present invention includes a housing 100, a sun gear 200, a reduction gear group 300, a ring gear 400 ). ≪ / RTI > In this embodiment, the working machine is a concept including various kinds of equipments such as an excavator, a wheel loader, a forklift, a bulldozer, a truck, a roller, a crane and the like equipped with a driving decelerator 1.

The housing 100 can be rotatably supported by the rotary hydraulic motor 10, and the gear oil can be injected into the housing 100. The housing 100 may be integrally fixed to the ring gear 400, which will be described later, and may be rotated by the ring gear 400.

The sun gear 200 can be coupled to extend linearly with the output shaft 11 of the rotary hydraulic motor 10 so as to be interlocked with each other and transmit power to the speed reducer group 300 to be described later.

The reduction gear group 300 may be composed of a combination of a plurality of planetary gears and a carrier which rotates the housing 100 by transmitting the power of the sun gear 200 to a ring gear 400 to be described later.

The ring gear 400 is integrally fixed to the housing 100 so that the housing 100 is rotated by the power transmitted from the reducer group 300 to the reduction gear. The ring gear 400 may include a main body 500 and a cover 600.

The main body 500 may include a chamber 510 in which the sun gear 200 and the speed reducer group 300 are installed. The housing 100 and the cover 600, which will be described later, Lt; / RTI > Although the main body 500 is separately provided in this embodiment, it is needless to say that the main body 500 may be formed to be integrated with the housing 100.

The cover 600 may be configured to be integrally coupled to or detached from the main body 500 while sealing the chamber 510 in which the sun gear 200 and the speed reducer group 300 are housed. The cover 600 may include a fastening plate 610, a rim 620 A guide plate 630, a gear oil hole 640, a magnet 650, and a collecting passage 660, which will be described in detail below with reference to FIGS. 2 to 5.

A plurality of fastening holes 612 may be formed in the fastening plate 610 so that the fastening plate 611 fastens the cover 600 to the main body 500. A plurality of fastening holes 612 may be formed along the outer circumference of the fastening plate 610, And a guide plate 630 to be described later may be formed continuously on the inner circumferential surface.

The rim 620 may be formed to extend a certain length to the inside of the cover 600 along the outer peripheral surface of the fastening plate 610 so as to accommodate the main body 500 of the ring gear 400.

The guide plate 630 guides the metal particles and impurities contained in the gear oil to the magnet 650 by guiding the metal particles and the impurities contained in the gear 510 to be described later while sealing the chamber 510 having the sun gear 200 and the reducer group 300 therein. And may be continuously formed on the inner circumferential surface of the fastening plate 610 so as to be easily collected.

The guide plate 630 facilitates the movement of the metal particles and impurities contained in the gear oil, which is moved toward the guide plate 630 by the centrifugal force generated when the planetary gear of the speed reducer group 300 rotates, Specifically, the metal particles and the impurities are allowed to flow in the direction of the edge of the guide plate 630 provided with the magnets 650 to be described later, so that the metal particles and the impurities are concentrated So that the inner surface height of the central portion is the highest and the inner surface height of the edge portion is the lowest.

The gear oil through hole 640 can not only check the amount of gear oil injected into and discharged from the housing 100 and the amount of gear oil injected into the housing 100 but also can remove the metal particles and impurities captured by the magnet 650 A plurality of protrusions may be formed at the boundary between the fastening plate 610 and the guide plate 630.

The gear oil hole 640 may be made to be opened and closed by screwing the gear oil cap 641.

The magnet 650 may be formed at an edge portion of the guide plate 630 so as to collect metal particles and impurities contained in the gear oil.

Specifically, the magnet 650 may be provided continuously or discontinuously at a boundary portion between the fastening plate 610 and the guide plate 630, and may be detachably configured to facilitate the replacement of the magnet 650.

Further, the magnet 650 may be formed around the gear oil hole 640 to facilitate removal of the collected metal particles, and may further be provided with a gear oil cap 641 that is in contact with the gear oil .

The collection passage 660 may be further formed at a boundary portion between the fastening plate 610 and the guide plate 630 so that the metal particles and the impurities guided by the guide plate 630 can be easily collected. At this time, the magnet may be provided inside the collection passage 660.

Such a collecting passage 660 may be in a trench shape, and this shape can prevent the metal particles and impurities captured by the magnet 650 from being discharged to clean gear oil.

The collecting passage 660 can be configured to connect the plurality of gear oil through holes 640 so that the metal particles and impurities collected in the magnet 650 provided in the collecting passage 660 can be passed through the gear oil passage Gt; 640 < / RTI >

The operation of the driving decelerator 1 of the working machine according to the present invention constructed as described above is as follows.

When the sun gear 200 of the drive decelerator 1 continuously supported in a straight line with the output shaft 11 of the rotary hydraulic motor 10 is rotated and the sun gear 200 is coupled to the sun gear 200 The rotational speed of the sun gear 200 is reduced by the reduction gear group 300 including a plurality of planetary gears and carriers and the like to be output to the housing 100 integrally coupled with the ring gear 400 to rotate the housing 100 And the sun gear 200 and the reducer group 300 and the ring gear 400 are interlocked with each other so that the contact surfaces are abraded by rolling friction so that fine metal particles and impurities are generated and these metal particles and impurities are suspended .

Metal particles and impurities floating like gear oil are collected in a magnet 650 provided in a collecting passage 660 formed at a boundary portion between a fastening plate 610 and a guide plate 630. At this time, The metal particles and impurities move toward the guide plate 630 due to the centrifugal force generated when the planetary gears of the planetary gears revolves and the metal particles and the impurities moved by the convex shape of the guide plate 630 move the position of the magnet 650 The collecting ability can be further improved by moving toward the edge of the guide plate 630. [

Thus, in this embodiment, the planetary gears of the reduction gear group 300 are included in the gear oil that is moved toward the guide plate 630 by the centrifugal force generated when the planetary gears of the reduction gear group 300 are revolved by configuring the guide plate 630 in a convex cross- The metal particles and the impurities can be moved to the magnets positioned at the edges due to the shape of the guide plate 630, so that the metal particles and the impurities can be easily collected.

In this embodiment, the trench-like collecting passage 660 is formed along the edge of the guide plate 630 and the magnet 650 is provided in the collecting passage 660, so that the metal particles and the impurities can be more easily It is possible to prevent the trapped metal particles and the impurities from being discharged to the clean gear oil.

The present embodiment further includes a collecting passage 660 in which a magnet 650 is provided around a gear oil passage 640 for confirming the amount of gear oil injected and discharged or injected into the inside thereof, It is possible to easily remove the metal particles and the impurities collected in the gear hole 650 through the gear oil hole 640.

In addition, in the present embodiment, the magnet 650 can be detachably attached so that removal of metal particles and replacement of the magnet can be facilitated.

In addition, in the present embodiment, by using the centrifugal force generated when the planetary gears revolves, the movement power of the metal particles and the impurities can be easily captured, and it is not necessary to use additional power or power .

In addition, this embodiment can reduce metal particle and impurity removal work performed for long-term use of equipment, increase equipment operation time, and reduce equipment maintenance cost.

In addition, since metal particles and impurities can be easily trapped or removed, the present embodiment ensures that the metal particles and impurities do not exist between the gears during transmission of power, thereby guaranteeing endurance reliability similar to the expected lifetime at design time .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be apparent to those skilled in the art that various combinations and modifications may be made without departing from the scope of the present invention. Therefore, it should be understood that the technical contents related to the modifications and applications that can be easily derived from the embodiments of the present invention are included in the present invention.

1: Driving decelerator 10: Rotary hydraulic motor
11: output shaft 100: housing
200: sun gear 300: speed reducer fish
400: ring gear 500: main body
510: chamber 600: cover
610: fastening plate 611: fastening member
612: fastening hole 620: rim
630: guide plate 640: gear oil passage
641: gear oil cap 650: magnet
660: collection passage

Claims (10)

A housing rotatably supported by the rotary hydraulic motor and assembled therein, the gear oil being injected into the housing;
A sun gear coupled to the rotary hydraulic motor;
A reduction gear unit that is composed of a combination of a plurality of planetary gears and a carrier and decelerates the power of the sun gear; And
A main body having a chamber in which the sun gear and the reduction gear group are housed, and a cover coupled to or separated from the main body while sealing the chamber,
The cover
Wherein the metal particles contained in the gear oil and a magnet for collecting the impurities are provided at the edge portion and the convex shape is formed to guide the metal particles and impurities, which are moved toward the cover by centrifugal force generated when the planetary gears revolve, Wherein the guide plate comprises a guide plate. The electronic device according to claim 1,
A fastening plate having a plurality of fastening holes to be fixedly coupled to the body by fastening members;
A rim formed along an outer circumferential surface of the fastening plate, the rim receiving the body;
A guide plate continuously formed on an inner circumferential surface of the fastening plate and sealing the chamber; And
Wherein a plurality of gear oil holes are formed in a boundary portion between the fastening plate and the guide plate, and the gear oil hole is opened and closed by a gear oil cap. 3. The magnetron according to claim 2,
Wherein the guide plate is continuously or discontinuously provided at a boundary portion between the fastening plate and the guide plate, and is detachably mountable. 3. The magnetron according to claim 2,
Wherein the gear oil passage hole is formed around the gear oil passage. 3. The magnetron according to claim 2,
Wherein the gear oil cap is further provided on the gear oil cap in contact with the gear oil. 3. The method of claim 2,
Wherein a collecting passage for collecting metal particles and impurities is further formed at a boundary portion between the fastening plate and the guide plate. 7. The method according to claim 6,
Wherein the trench-like shape is a trench shape. 7. The method according to claim 6,
And the plurality of gear oil holes are connected to each other. 7. The magnetron according to claim 6,
And the second passage is provided inside the collection passage. A working machine comprising the traveling speed reducer according to any one of claims 1 to 9.
KR1020150130791A 2015-09-16 2015-09-16 Traveling decelerator for working machine and working machine having the traveling decelerator KR20170033014A (en)

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KR1020150130791A KR20170033014A (en) 2015-09-16 2015-09-16 Traveling decelerator for working machine and working machine having the traveling decelerator

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Application Number Priority Date Filing Date Title
KR1020150130791A KR20170033014A (en) 2015-09-16 2015-09-16 Traveling decelerator for working machine and working machine having the traveling decelerator

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220307583A1 (en) * 2021-03-29 2022-09-29 Enplas Corporation Planetary gear device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220307583A1 (en) * 2021-03-29 2022-09-29 Enplas Corporation Planetary gear device
US11674587B2 (en) * 2021-03-29 2023-06-13 Enplas Corporation Planetary gear device

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