CN110608265B - Gear box and electric shovel - Google Patents

Gear box and electric shovel Download PDF

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Publication number
CN110608265B
CN110608265B CN201911027903.8A CN201911027903A CN110608265B CN 110608265 B CN110608265 B CN 110608265B CN 201911027903 A CN201911027903 A CN 201911027903A CN 110608265 B CN110608265 B CN 110608265B
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CN
China
Prior art keywords
shaft
gear
output shaft
intermediate shaft
input shaft
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201911027903.8A
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Chinese (zh)
Other versions
CN110608265A (en
Inventor
汪正兵
米中生
张田
陈晨
陈春辉
韦冬生
王永博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing High Speed and Accurate Gear Group Co Ltd
Original Assignee
Nanjing High Speed and Accurate Gear Group Co Ltd
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 Nanjing High Speed and Accurate Gear Group Co Ltd filed Critical Nanjing High Speed and Accurate Gear Group Co Ltd
Priority to CN201911027903.8A priority Critical patent/CN110608265B/en
Publication of CN110608265A publication Critical patent/CN110608265A/en
Application granted granted Critical
Publication of CN110608265B publication Critical patent/CN110608265B/en
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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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • 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
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly

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

Abstract

The application discloses a gear box and electric shovel relates to gear drive's technical field to solve the great technical problem of gear box among the prior art. The gearbox comprises a box body, an input shaft, an output shaft, a first intermediate shaft and a second intermediate shaft; the input shaft is arranged on the box body and can rotate around the axis of the input shaft; the output shaft is arranged on the box body and can rotate around the axis of the output shaft; the first intermediate shaft is a hollow shaft, sleeved on the output shaft and capable of rotating relative to the output shaft; the second intermediate shaft is arranged on the box body and can rotate around the axis of the second intermediate shaft; the input shaft is in transmission connection with the output shaft through the first intermediate shaft and the second intermediate shaft. So this application is on the output shaft through the first middle axle sleeve of hollow setting to shorten the interval between input shaft and the output shaft, reduced the volume of gear box, power density is great, and the cost is lower.

Description

Gear box and electric shovel
Technical Field
The application relates to the technical field of gear transmission mechanisms, in particular to a gear box and an electric shovel.
Background
The electric shovel is also called a rope shovel and a steel cable shovel, namely a mechanical electric excavator, and is a single bucket excavator which utilizes transmission parts such as gears, chains, steel cable pulley blocks and the like to transmit power.
Among the prior art, gear box for electric shovel mainly adopts multistage parallel transmission structure, has a plurality of transmission shafts, and wherein, each transmission shaft becomes parallel arrangement each other, and the straight line is arranged, and the level is arranged, leads to its input shaft and the interval between each other great of output shaft, and the volume of gear box is great, and power density is less, and the cost is higher.
Disclosure of Invention
The purpose of this application is to provide a gear box to solve the great technical problem of gear box among the prior art.
The utility model provides a still aim at provides an electric shovel to solve the great technical problem of gear box among the prior art.
The technical problems are mainly solved by the following technical scheme:
a gear box comprises a box body, an input shaft, an output shaft, a first intermediate shaft and a second intermediate shaft; the input shaft is arranged on the box body and can rotate around the axis of the input shaft; the output shaft is arranged on the box body and can rotate around the axis of the output shaft; the first intermediate shaft is a hollow shaft, sleeved on the output shaft and capable of rotating relative to the output shaft; the second intermediate shaft is arranged on the box body and can rotate around the axis of the second intermediate shaft; the input shaft is in transmission connection with the output shaft through the first intermediate shaft and the second intermediate shaft.
In an embodiment, the output shaft is coaxially disposed with the first intermediate shaft, and the output shaft is parallel to the input shaft, and the output shaft is parallel to the second intermediate shaft.
In an embodiment, the axis of the input shaft and the axis of the second intermediate shaft are on the same straight line, and the input shaft and the second intermediate shaft are on the same side of the output shaft.
In an embodiment, the input shaft and the second intermediate shaft are disposed in parallel, and the input shaft and the second intermediate shaft are respectively located at two sides of the output shaft.
In an embodiment, the input shaft is provided with a first gear, the first intermediate shaft is provided with a second gear and a third gear, the second intermediate shaft is provided with a fourth gear and a fifth gear, the output shaft is provided with a sixth gear, the first gear is meshed with the second gear, the third gear is meshed with the fourth gear, and the fifth gear is meshed with the sixth gear.
In an embodiment, the length of the first intermediate shaft is smaller than the length of the output shaft, and the sixth gear is located at one side of the first intermediate shaft.
In an embodiment, the first gear and the input shaft are of a split structure or are integrally formed; the second gear, the third gear and the first intermediate shaft are of a split type structure or are integrally formed; the fourth gear, the fifth gear and the second intermediate shaft are of split type structure or are integrally formed; the sixth gear and the output shaft are of a split type structure or are integrally formed.
In an embodiment, the first intermediate shaft has a first inner hole, and the output shaft is inserted into the first inner hole.
In an embodiment, a first mounting groove is respectively formed in each of two ends of the first intermediate shaft and located on the first inner surface of the first inner hole, a first bearing is respectively arranged in each of the first mounting grooves, and the first intermediate shaft is rotatably sleeved outside the output shaft through the first bearings.
In an embodiment, a first shaft sleeve is disposed in the first inner hole, and the first shaft sleeve is sleeved outside the output shaft and is clamped in the two first bearings.
An electric shovel, comprising: the vehicle comprises a vehicle frame and a gear box, wherein a motor is arranged on the vehicle frame, the gear box is arranged on the vehicle frame and is in transmission connection with the motor, and the gear box is the gear box.
Compared with the prior art, the beneficial effects of this application are: this application is on the output shaft through the first middle axle sleeve of hollow setting to shorten the interval between input shaft and the output shaft, reduced the volume of gear box, power density is great, and the cost is lower.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a case according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of a gearbox shown in an embodiment of the present application;
FIG. 3 is a cross-sectional view of a gearbox shown in an embodiment of the present application;
FIG. 4 is an exploded view of a portion of the structure of a gearbox shown in an embodiment of the present application;
FIG. 5 is a cross-sectional view of a gearbox shown in an embodiment of the present application.
Icon: 100-gear box; 1-a box body; 11-upper box body; 111-mounting a bracket; 1111-seventh mounting slots; 112-bearing blocks; 113-a second mounting slot; 114-a second bearing bushing; 115-fourth mounting groove; 116-fourth bearing cartridge; 117-first transparent cover; 118-first closure; 12-lower box body; 121-a third mounting groove; 122-a third bearing bush; 123-sixth mounting groove; 124-a second transparent cover; 125-second closure; 13-a first flange; 14-a second flange; 2-an input shaft; 21-a first gear; 22-a second bearing; 23-a second sleeve; 3-an output shaft; 31-sixth gear; 32-fourth bearings; 33-a third sleeve; 4-a first intermediate shaft; 41-a first bore; 42-a first mounting groove; 421-gasket groove; 422-bearing washers; 43-first bearing; 44-a first sleeve; 45-a second gear; 46-first flat key; 47-a third gear; 5-a second intermediate shaft; 51-fourth gear; 52-a second flat key; 53-fifth gear; 54-third bearing.
Detailed Description
The terms "first," "second," "third," and the like are used merely for distinguishing between descriptions and not for indicating a sequence number, nor are they to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "left", "right", "upper", "lower", etc. are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use for the product of the application, are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application.
In the description of the present application, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.
The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1, a schematic structure of a case 1 according to an embodiment of the disclosure is shown. The electric shovel comprises a frame and a gear box 100 (refer to fig. 2), wherein a motor is arranged on the frame, and the gear box 100 is arranged on the frame and is in transmission connection with the motor.
The gear box 100 comprises a box body 1, wherein the box body 1 comprises an upper box body 11 and a lower box body 12, the upper box body 11 and the lower box body 12 are connected through a first flange 13, and one side of the box body 1 is connected to a frame through a second flange 14. The connection mode of the upper box 11 and the lower box 12 and the connection mode of the box 1 and the frame can be welding, pin shaft connection or bolt connection.
Referring to FIG. 2, a cross-sectional view of a gearbox 100 according to an embodiment of the present application is shown. The gearbox 100 comprises an input shaft 2, an output shaft 3, a first intermediate shaft 4 and a second intermediate shaft 5; the input shaft 2 is arranged in the box body 1 and can rotate around the axis of the input shaft; the output shaft 3 is arranged in the box body 1 and can rotate around the axis of the output shaft; the first intermediate shaft 4 is a hollow shaft, is sleeved in the output shaft 3 and can rotate relative to the output shaft 3; the second intermediate shaft 5 is arranged in the box body 1 and can rotate around the axis of the second intermediate shaft; the input shaft 2 is connected to the output shaft 3 via a first intermediate shaft 4 and a second intermediate shaft 5.
This application is through first jackshaft 4 of hollow setting to the cover is on output shaft 3, thereby has shortened the interval between input shaft 2 and the output shaft 3, or has eliminated gearbox 100 from length, width, in the high arbitrary direction, eliminates the space reserved for interval between first jackshaft 4 and the output shaft 3, thereby has reduced the volume of gearbox 100, makes the gearbox 100 power density of this application great, and the cost is lower.
The output shaft 3 is arranged coaxially with the first intermediate shaft 4, and the output shaft 3 is arranged in parallel with the input shaft 2, and the output shaft 3 is arranged in parallel with the second intermediate shaft 5.
The axis of the input shaft 2 is on the same line as the axis of the second intermediate shaft 5, and the input shaft 2 and the second intermediate shaft 5 are on the same side of the output shaft 3. The space reserved for the distance between the second intermediate shaft 5 and the input shaft 2 in any direction of length, width, height of the gearbox 100 is eliminated, so that the gearbox 100 has only two parallel shafting lines seen from the outside, further reducing the volume of the gearbox 100 and the size of the radial space of the gearbox 100. Compared with the radial space in the prior art, the radial space is reduced by 50%, the weight is reduced by 30%, and therefore, the installation space of the gear box 100 can be reduced, and the volume of the electric shovel can be reduced.
In an embodiment, the axis of the output shaft 3 is not coincident with the axis of the first intermediate shaft 4, and the first intermediate shaft 4 is eccentrically sleeved outside the output shaft 3.
In one embodiment, the input shaft 2 and the second intermediate shaft 5 are disposed in parallel, and the input shaft 2 and the second intermediate shaft 5 are respectively located at two sides of the output shaft 3. I.e. the axis of the input shaft 2 and the axis of the second intermediate shaft 5 do not coincide with each other with a space between them.
Referring to fig. 3, a cross-sectional view of a gear box 100 according to an embodiment of the present application is shown. The direction in which the gear direction output shaft 3 is directed to the input shaft 2 is referred to as rightward, the direction in which the upper casing 11 is directed to the lower casing 12 is referred to as downward, and the up-down-left-right direction is defined.
The input shaft 2 is provided with a first gear 21, the first intermediate shaft 4 is provided with a second gear 45 and a third gear 47, the second intermediate shaft 5 is provided with a fourth gear 51 and a fifth gear 53, the output shaft 3 is provided with a sixth gear 31, wherein the first gear 21 is meshed with the second gear 45, the third gear 47 is meshed with the fourth gear 51, and the fifth gear 53 is meshed with the sixth gear 31.
The length of the first intermediate shaft 4 is smaller than the length of the output shaft 3, and the sixth gear 31 is located below the first intermediate shaft 4. And the second gear 45, the third gear 47 and the sixth gear 31 are sequentially arranged from top to bottom as viewed along the axis direction of the output shaft 3, and the first gear 21, the fourth gear 51 and the fifth gear 53 are sequentially arranged from top to bottom as viewed along the axis direction of the input shaft 2.
The first gear 21 and the second gear 45 are both arranged close to the inner wall of the upper case 11; the fifth gear 53 and the sixth gear 31 are both disposed close to the inner wall of the lower case 12, and the structure is more compact, so that the size of the gear case 100 is smaller.
The first gear 21 and the input shaft 2 are gear shafts, the third gear 47 and the first intermediate shaft 4 are gear shafts, the fifth gear 53 and the second intermediate shaft 5 are gear shafts, the structure is more compact, and the interval between the axis of the input shaft 2 and the axis of the output shaft 3 can be properly reduced.
The second gear 45 is connected with the first intermediate shaft 4 in a flat key manner, and the second gear 45 is connected with the first intermediate shaft 4 through a first flat key 46. The fourth gear 51 is connected to the second intermediate shaft 5 by a second flat key 52. The sixth gear 31 is connected to the output shaft 3 by a spline.
Wherein, the first gear 21 and the input shaft 2 can be of a split type structure or integrally formed; the second gear 45 and the third gear 47 may be of a split type structure or integrally formed with the first intermediate shaft 4; the fourth gear 51 and the fifth gear 53 may be of a split type structure or integrally formed with the second intermediate shaft 5; the sixth gear 31 and the output shaft 3 may be of a split type structure or integrally formed.
Referring to fig. 4, an exploded view of a portion of the structure of a gearbox 100 according to an embodiment of the present disclosure is shown. The first intermediate shaft 4 has a first inner bore 41, and the output shaft 3 (see fig. 3) is inserted into the first inner bore 41. A first mounting groove 42 is respectively arranged at two ends of the first intermediate shaft 4 and positioned on the first inner surface of the first inner hole 41, a first bearing 43 is respectively arranged in each first mounting groove 42, and the first intermediate shaft 4 is rotatably sleeved outside the output shaft 3 through the first bearing 43.
The first inner hole 41 is internally provided with a first shaft sleeve 44, and the first shaft sleeve 44 is sleeved outside the output shaft 3 and is clamped in two first bearings 43. The first sleeve 44 is used for axial positioning of the first bearing 43.
The first mounting groove 42 is a stepped groove, a washer groove 421 is provided on an inner surface of the first mounting groove 42, and a bearing washer 422 is provided in the washer groove 421, the bearing washer 422 being used for axial positioning of the first bearing 43. The output shaft 3 is sleeved with a third shaft sleeve 33.
In one embodiment, the first intermediate shaft 4 is sintered by an oil-containing powder metallurgy process.
Referring to fig. 5, a cross-sectional view of a gear box 100 according to an embodiment of the present application is shown. A mounting bracket 111 is provided on the inner surface of the upper case 11, a seventh mounting groove 1111 is provided on the mounting bracket 111, and a bearing housing 112 is bolted to the mounting bracket 111 at the third mounting groove 121. A second mounting groove 113 and a fourth mounting groove 115 are formed in the upper case 11, and a second bearing bush 114 is arranged in the second mounting groove 113; a fourth bearing bush 116 is provided in the fourth mounting groove 115. A third mounting groove 121 and a sixth mounting groove 123 are provided on the lower case 12, and a third bearing bush 122 is provided in the third mounting groove 121.
A first transparent cover 117 through which the input shaft 2 passes is provided on the upper case 11 at the second mounting groove 113, and the first transparent cover 117 is screw-coupled to the upper case 11. A first closure cap 118 is provided on the upper housing 11 at the fourth mounting groove 115. A second closure 125 is provided on the lower housing 12 at the third mounting groove 121. A second transparent cover 124 is connected to the lower case 12 at the sixth mounting groove 123.
One second bearing 22 is sleeved at each end of the input shaft 2, and of the two second bearings 22, the upper second bearing 22 is mounted in the second bearing bush 114, and the lower second bearing 22 is mounted on the bearing block 112.
One end of the input shaft 2 extends into and out of the second mounting groove 113 for connection with a motor drive, and the input shaft 2 may be connected with the motor drive by means of a flat key connection or the like. A second sleeve 23 is sleeved outside the input shaft 2 and is used for positioning the motor.
One third bearing 54 is sleeved on each of two ends of the second intermediate shaft 5, and of the two third bearings 54, the third bearing 54 positioned above is installed in the seventh installation groove 1111, and the third bearing 54 positioned below is installed on the third bearing bush 122.
One fourth bearing 32 is sleeved at each end of the output shaft 3, and of the two fourth bearings 32, the fourth bearing 32 positioned above is installed in the fourth bearing bushing 116, and the fourth bearing 32 positioned below is installed on the second transparent cover 124. One end of the output shaft 3 extends into and out of the sixth mounting groove 123 for connection with the running gear of the electric shovel. The output shaft 3 can be in transmission connection with the motor through spline connection and the like.
The third sleeve 33 (see fig. 4) is interposed between the fourth bearing 32 and the first bearing 43 for axial positioning of the fourth bearing 32 and the first bearing 43.
In which shoulders, sleeves or washers may be provided on the input shaft 2, the output shaft 3, the first intermediate shaft 4 and the second intermediate shaft 5 as required for axial positioning of the first bearing 43, the second bearing 22, the third bearing 54 and the fourth bearing 32. The second, third, fourth, fifth, sixth and seventh mounting grooves 113, 121, 115, 123 and 1111 may be circular through holes provided on the case 1.
In one embodiment, gearbox 100 employs splash lubrication, avoiding failure handling of lubrication cooling accessories. Each gear within gearbox 100 is an involute gear.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (3)

1. A gearbox, comprising:
a case;
the input shaft is arranged on the box body;
the output shaft is arranged on the box body; and
the first intermediate shaft is a hollow shaft, sleeved on the output shaft and capable of rotating relative to the output shaft; and
a second intermediate shaft; the second intermediate shaft is arranged on the box body;
the input shaft is in transmission connection with the output shaft through the first intermediate shaft and the second intermediate shaft;
the output shaft and the first intermediate shaft are coaxially arranged, the output shaft and the input shaft are arranged in parallel, and the output shaft and the second intermediate shaft are arranged in parallel;
the axis of the input shaft and the axis of the second intermediate shaft are positioned on the same straight line, and the input shaft and the second intermediate shaft are positioned on the same side of the output shaft;
the input shaft and the second intermediate shaft are arranged in parallel, and the input shaft and the second intermediate shaft are respectively positioned at two sides of the output shaft;
the input shaft is provided with a first gear, the first intermediate shaft is provided with a second gear and a third gear, the second intermediate shaft is provided with a fourth gear and a fifth gear, the output shaft is provided with a sixth gear, the first gear is meshed with the second gear, the third gear is meshed with the fourth gear, and the fifth gear is meshed with the sixth gear;
the length of the first intermediate shaft is smaller than that of the output shaft, and the sixth gear is positioned on one side of the first intermediate shaft;
the first intermediate shaft is provided with a first inner hole, and the output shaft is arranged in the first inner hole in a penetrating manner;
the two ends of the first intermediate shaft are respectively provided with a first mounting groove on the first inner surface of the first inner hole, each first mounting groove is internally provided with a first bearing, and the first intermediate shaft is rotatably sleeved outside the output shaft through the first bearings;
the first shaft sleeve is sleeved outside the output shaft and is clamped in the two first bearings.
2. The gearbox of claim 1, wherein the first gear is of a split construction or integrally formed with the input shaft; the second gear, the third gear and the first intermediate shaft are of a split type structure or are integrally formed; the fourth gear, the fifth gear and the second intermediate shaft are of split type structure or are integrally formed; the sixth gear and the output shaft are of a split type structure or are integrally formed.
3. An electric shovel, characterized by comprising:
a frame, a motor is arranged on the frame,
a gear box which is arranged on the frame and is in transmission connection with the motor, wherein the gear box is the gear box of any one of claims 1-2.
CN201911027903.8A 2019-10-25 2019-10-25 Gear box and electric shovel Active CN110608265B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911027903.8A CN110608265B (en) 2019-10-25 2019-10-25 Gear box and electric shovel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911027903.8A CN110608265B (en) 2019-10-25 2019-10-25 Gear box and electric shovel

Publications (2)

Publication Number Publication Date
CN110608265A CN110608265A (en) 2019-12-24
CN110608265B true CN110608265B (en) 2024-03-19

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003343701A (en) * 2002-05-31 2003-12-03 Sayama Precision Ind Co Geared motor
CN101799061A (en) * 2010-03-08 2010-08-11 张家港金凯达机械有限公司 Gear transmission device
CN202182167U (en) * 2011-07-25 2012-04-04 宁波东力传动设备股份有限公司 Compact type combination gear case
CN202921653U (en) * 2012-10-19 2013-05-08 黎明重工集团(福建)有限公司 Compound gear box of rod and wire mill
CN203067671U (en) * 2013-01-06 2013-07-17 杭州前进重型机械有限公司 Vertically eccentric distributed four-gear two-shat gear box
CN204961711U (en) * 2015-08-19 2016-01-13 杭州建明机械有限公司 Shunting double reduction unit
WO2017071818A1 (en) * 2015-10-27 2017-05-04 Sew-Eurodrive Gmbh & Co. Kg Gearing, having a gearing housing
CN208221552U (en) * 2018-03-05 2018-12-11 株洲齿轮有限责任公司 Retarder
CN211117385U (en) * 2019-10-25 2020-07-28 南京高精齿轮集团有限公司 Gear box and electric shovel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003343701A (en) * 2002-05-31 2003-12-03 Sayama Precision Ind Co Geared motor
CN101799061A (en) * 2010-03-08 2010-08-11 张家港金凯达机械有限公司 Gear transmission device
CN202182167U (en) * 2011-07-25 2012-04-04 宁波东力传动设备股份有限公司 Compact type combination gear case
CN202921653U (en) * 2012-10-19 2013-05-08 黎明重工集团(福建)有限公司 Compound gear box of rod and wire mill
CN203067671U (en) * 2013-01-06 2013-07-17 杭州前进重型机械有限公司 Vertically eccentric distributed four-gear two-shat gear box
CN204961711U (en) * 2015-08-19 2016-01-13 杭州建明机械有限公司 Shunting double reduction unit
WO2017071818A1 (en) * 2015-10-27 2017-05-04 Sew-Eurodrive Gmbh & Co. Kg Gearing, having a gearing housing
CN208221552U (en) * 2018-03-05 2018-12-11 株洲齿轮有限责任公司 Retarder
CN211117385U (en) * 2019-10-25 2020-07-28 南京高精齿轮集团有限公司 Gear box and electric shovel

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Effective date of registration: 20200511

Address after: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000

Applicant after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd.

Address before: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000

Applicant before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd.

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