阅读说明：本技术 齿轮箱及电铲 (Gear box and electric shovel ) 是由 汪正兵 米中生 张田 陈晨 陈春辉 韦冬生 王永博 于 2019-10-25 设计创作，主要内容包括：本申请公开了一种齿轮箱及电铲,涉及齿轮传动机构的技术领域,以解决现有技术中的齿轮箱的体积较大的技术问题。本申请的齿轮箱包括箱体、输入轴、输出轴、第一中间轴和第二中间轴；所述输入轴设置在所述箱体上,并能绕自身轴线转动；所述输出轴设置在所述箱体上,并能绕自身轴线转动；所述第一中间轴为空心轴,套设在所述输出轴上,且能相对所述输出轴转动；所述第二中间轴设置在所述箱体上,并能绕自身轴线转动；其中,所述输入轴通过所述第一中间轴和所述第二中间轴与所述输出轴传动连接。故本申请通过空心设置的第一中间轴套在输出轴上,从而缩短了输入轴与输出轴之间的间距,减小了齿轮箱的体积,功率密度较大,且成本较低。(The application discloses gear box and electric shovel relates to gear drive's technical field to solve the great technical problem of volume of the gear box among the prior art. The 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, is sleeved on the output shaft and can rotate 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; wherein the input shaft is in driving connection with the output shaft through the first intermediate shaft and the second intermediate shaft. Therefore, the hollow first intermediate shaft is sleeved on the output shaft, so that the distance between the input shaft and the output shaft is shortened, the size of the gear box is reduced, the power density is high, and the cost is low.)

1. A gearbox, comprising:

a box body;

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, is sleeved on the output shaft and can rotate relative to the output shaft; and

a second intermediate shaft; the second intermediate shaft is arranged on the box body;

wherein the input shaft is in driving connection with the output shaft through the first intermediate shaft and the second intermediate shaft.

2. A gearbox according to claim 1, in which the output shaft is arranged coaxially with the first intermediate shaft and parallel to the input shaft, and parallel to the second intermediate shaft.

3. A gearbox according to claim 2, in which the axis of the input shaft is in line with the axis of the second intermediate shaft, and the input shaft and the second intermediate shaft are on the same side of the output shaft.

4. A gearbox according to claim 2, in which the input shaft is arranged in parallel with the second intermediate shaft, and the input shaft and the second intermediate shaft are located on either side of the output shaft.

5. A gearbox according to any one of claims 1 to 4, characterised in that a first gear wheel is provided on the input shaft, a second gear wheel and a third gear wheel are provided on the first intermediate shaft, a fourth gear wheel and a fifth gear wheel are provided on the second intermediate shaft, a sixth gear wheel is provided on the output shaft,

wherein the first gear is engaged with the second gear, the third gear is engaged with the fourth gear, and the fifth gear is engaged with the sixth gear.

6. A gearbox according to claim 5, in which the length of the first intermediate shaft is less than the length of the output shaft, the sixth gear being located on one side of the first intermediate shaft.

7. A gearbox according to claim 5 in which the first gear is of split construction or is integrally formed with the input shaft; the second gear, the third gear and the first intermediate shaft are of a split structure or integrally formed; the fourth gear, the fifth gear and the second intermediate shaft are of a split structure or integrally formed; the sixth gear and the output shaft are of a split structure or are integrally formed.

8. The gearbox of claim 1, wherein the first intermediate shaft has a first bore, the output shaft being disposed through the first bore;

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 can be rotatably sleeved outside the output shaft through the first bearings.

9. A gearbox according to claim 8, characterised in that a first bushing is arranged in said first bore, said first bushing being arranged outside said output shaft and being clamped in two of said first bearings.

10. An electric shovel, comprising:

a frame, a motor is arranged on the frame,

a gearbox provided on the frame and in driving connection with the motor, the gearbox being as claimed in any one of claims 1 to 9.

Technical Field

The application relates to the technical field of gear drive mechanisms, in particular to a gear box and an electric shovel.

Background

The electric shovel is also called rope shovel and steel cable shovel, namely a mechanical electric excavator, and is a single bucket excavator which transmits power by utilizing transmission parts such as gears, chains, steel cable pulley blocks and the like.

Disclosure of Invention

The application aims to provide a gearbox to solve the technical problem that the size of the gearbox in the prior art is large.

The application also aims to provide the electric shovel to solve the technical problem that the size of a gear box in the prior art is large.

The above technical problem of the present application is mainly solved by the following technical solutions:

a 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, is sleeved on the output shaft and can rotate 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; wherein the input shaft is in driving connection with the output shaft through the first intermediate shaft and the second intermediate shaft.

In one embodiment, the output shaft is coaxially disposed with the first intermediate shaft, and the output shaft is disposed in parallel with the input shaft, and the output shaft is disposed in parallel with the second intermediate shaft.

In one embodiment, the axis of the input shaft and the axis of the second intermediate shaft are located on the same straight line, and the input shaft and the second intermediate shaft are located 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 on two sides of the output shaft.

In an embodiment, a first gear is disposed on the input shaft, a second gear and a third gear are disposed on the first intermediate shaft, a fourth gear and a fifth gear are disposed on the second intermediate shaft, and a sixth gear is disposed on the output shaft, wherein the first gear is engaged with the second gear, the third gear is engaged with the fourth gear, and the fifth gear is engaged with the sixth gear.

In one embodiment, the length of the first intermediate shaft is smaller than the length of the output shaft, and the sixth gear is located on one side of the first intermediate shaft.

In one 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 structure or integrally formed; the fourth gear, the fifth gear and the second intermediate shaft are of a split structure or integrally formed; the sixth gear and the output shaft are of a split structure or are integrally formed.

In one embodiment, the first intermediate shaft has a first inner hole, and the output shaft is inserted into the first inner hole.

In an embodiment, two first mounting grooves are respectively formed in two ends of the first intermediate shaft and located on a first inner surface of the first inner hole, a first bearing is respectively arranged in each first mounting groove, 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 disposed outside the output shaft and clamped between the two first bearings.

An electric shovel, comprising: the frame is provided with a motor, the gear box is arranged on the frame and is in transmission connection with the motor, and the gear box is the gear box.

Compared with the prior art, the beneficial effect of this application is: this application is through the first jackshaft cover of hollow setting on the output shaft 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 required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a box body 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 a gearbox according to 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-a gearbox; 1-a box body; 11-upper box body; 111-a mounting bracket; 1111-seventh mounting groove; 112-a bearing seat; 113-a second mounting groove; 114-a second bearing bush; 115-a fourth mounting groove; 116-a fourth bearing bush; 117-first transparent cover; 118-a first lid; 12-a lower box body; 121-a third mounting groove; 122-a third bearing cartridge; 123-a sixth mounting groove; 124-second transparent cover; 125-second blank cap; 13-a first flange; 14-a second flange; 2-an input shaft; 21-a first gear; 22-a second bearing; 23-a second bushing; 3-an output shaft; 31-sixth gear; 32-a fourth bearing; 33-a third sleeve; 4-a first intermediate shaft; 41-a first inner bore; 42-a first mounting groove; 421-gasket groove; 422-bearing washer; 43-a first bearing; 44-a first bushing; 45-a second gear; 46-first flat bond; 47-third gear; 5-a second intermediate shaft; 51-fourth gear; 52-second flat bond; 53-fifth gear; 54-third bearing.

Detailed Description

The terms "first," "second," "third," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, and do not denote any order or order.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the 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 the terms "inside", "outside", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.

In the description of the present application, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings.

Please refer to fig. 1, which is a schematic structural diagram of a box 1 according to an embodiment of the present application. The electric shovel comprises a frame and a gear box 100 (please 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 gearbox 100 comprises a box body 1, 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 body 11 and the lower box body 12 and the connection mode of the box body 1 and the frame can also be welding, pin shaft connection or bolt connection.

Referring to FIG. 2, a 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 in transmission connection with the output shaft 3 through a first intermediate shaft 4 and a second intermediate shaft 5.

This application is through the 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 gear box 100 from length, width, highly arbitrary orientation, eliminates the space of reserving for the interval between first jackshaft 4 and the output shaft 3, thereby has reduced gear box 100's volume, makes gear box 100 power density of this application great, and the cost is lower.

The output shaft 3 is coaxially arranged with the first intermediate shaft 4, 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 and the axis of the second intermediate shaft 5 are located on the same straight line, and the input shaft 2 and the second intermediate shaft 5 are located on the same side of the output shaft 3. The space reserved for the spacing between the second intermediate shaft 5 and the input shaft 2 in any direction of the length, the width and the height of the gearbox 100 is eliminated, so that the gearbox 100 only has two parallel shaft systems when viewed from the outside, the volume of the gearbox 100 is further reduced, and the size of the radial space of the gearbox 100 is reduced. Compared with the prior art, the radial space is reduced by 50%, the weight is reduced by 30%, so that the installation space of the gearbox 100 can be reduced, and the volume of the electric shovel is reduced.

In one 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 arranged by being 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 disposed on 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 a distance between them.

Referring to FIG. 3, a sectional view of a gearbox 100 according to an embodiment of the present application is shown. The direction in which the gear-direction output shaft 3 is directed toward the input shaft 2 is referred to as rightward, the direction in which the upper case 11 is directed toward the lower case 12 is referred to as downward, and the up, down, left, and right directions are 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, and 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 arranged in sequence from top to bottom as viewed along the axial direction of the output shaft 3, and the first gear 21, the fourth gear 51 and the fifth gear 53 are arranged in sequence from top to bottom as viewed along the axial 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 box body 11; the fifth gear 53 and the sixth gear 31 are disposed close to the inner wall of the lower case 12, so that the structure is more compact, and the size of the gearbox 100 is smaller.

The first gear 21 and the input shaft 2 are made as a gear shaft, the third gear 47 and the first intermediate shaft 4 are made as a gear shaft, and the fifth gear 53 and the second intermediate shaft 5 are made as a gear shaft, the structure is more compact, and the distance between the axis of the input shaft 2 and the axis of the output shaft 3 can be appropriately reduced.

The second gear 45 and the first intermediate shaft 4 are connected by a flat key, and the second gear 45 and the first intermediate shaft 4 are connected by a first flat key 46. The fourth gear 51 and the second intermediate shaft 5 are connected together by a second flat key 52. The sixth gear 31 is connected to the output shaft 3 by spline coupling.

The first gear 21 and the input shaft 2 may be of a split structure or integrally formed; the second gear 45 and the third gear 47 and the first intermediate shaft 4 can be of a split structure or integrally formed; the fourth gear 51 and the fifth gear 53 and the second intermediate shaft 5 can be of a split structure or integrally formed; the sixth gear 31 and the output shaft 3 may be of a split structure or integrally formed.

Referring to FIG. 4, an exploded view of a portion of a gearbox 100 according to an embodiment of the present application is shown. The first intermediate shaft 4 has a first inner hole 41, and the output shaft 3 (see fig. 3) is inserted into the first inner hole 41. At the both ends of first jackshaft 4, and be located and respectively be equipped with a first mounting groove 42 on the first internal surface of first hole 41, respectively be equipped with first bearing 43 in each first mounting groove 42, first jackshaft 4 can rotationally overlap outside locating output shaft 3 through first bearing 43.

The first inner hole 41 is provided with a first shaft sleeve 44, and the first shaft sleeve 44 is sleeved outside the output shaft 3 and clamped in the two first bearings 43. The first bushing 44 is used for axial positioning of the first bearing 43.

The first mounting groove 42 is a stepped groove, a gasket groove 421 is provided on an inner surface of the first mounting groove 42, a bearing gasket 422 is provided in the gasket groove 421, and the bearing gasket 422 is used for axial positioning of the first bearing 43. The output shaft 3 is sleeved with a third bushing 33.

In one embodiment, the first intermediate shaft 4 is sintered by an oil-containing powder metallurgy process.

Referring to FIG. 5, a sectional view of a gearbox 100 according to an embodiment of the present application is shown. An installation bracket 111 is provided on an inner surface of the upper case 11, a seventh installation groove 1111 is provided on the installation bracket 111, and a bearing housing 112 is bolted to the installation bracket 111 at the third installation groove 121. A second mounting groove 113 and a fourth mounting groove 115 are formed in the upper box body 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 formed in the lower case 12, and a third bearing bushing 122 is disposed in the third mounting groove 121.

A first transparent cover 117 for the input shaft 2 to pass through is arranged on the upper box body 11 and positioned at the second mounting groove 113, and the first transparent cover 117 is connected with the upper box body 11 through a bolt. A first blank cap 118 is disposed on the upper box 11 and at the fourth installation groove 115. A second blank cap 125 is disposed on the lower case 12 and at the third mounting groove 121. A second transparent cover 124 is arranged on the lower box body 12 and positioned at the sixth installation groove 123.

Two ends of the input shaft 2 are respectively sleeved with a second bearing 22, of the two second bearings 22, the upper second bearing 22 is installed in a second bearing bush 114, and the lower second bearing 22 is installed on a bearing seat 112.

One end part of the input shaft 2 extends into and penetrates out of the second mounting groove 113 to be connected with a motor in a transmission manner, and the input shaft 2 can be connected with the motor in a transmission manner through flat keys and the like. A second shaft sleeve 23 is sleeved outside the input shaft 2 and used for positioning the motor.

Two ends of the second intermediate shaft 5 are respectively sleeved with a third bearing 54, 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.

The two ends of the output shaft 3 are respectively sleeved with a fourth bearing 32, of the two fourth bearings 32, the fourth bearing 32 located above is installed in the fourth bearing bush 116, and the fourth bearing 32 located 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 being connected with a traveling mechanism of the electric shovel. The output shaft 3 can be in transmission connection with the motor through a spline connection mode and the like.

The third bushing 33 (see fig. 4) is interposed between the fourth bearing 32 and the first bearing 43 for axially positioning the fourth bearing 32 and the first bearing 43.

Here, shoulders, bushings or washers can 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 the 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 uses splash lubrication to avoid the failure handling of lubricated cooled accessories. Each gear in gearbox 100 is an involute gear.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.