CN211901519U

CN211901519U - Gear box and speed reducer

Info

Publication number: CN211901519U
Application number: CN202020465885.3U
Authority: CN
Inventors: 杨文飞; 秦立雨; 安醒
Original assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Current assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-11-10
Anticipated expiration: 2030-04-02

Abstract

The utility model belongs to the technical field of the speed reducer, a gear box and speed reducer is disclosed. The gearbox comprises a box body and an output shaft, wherein the output shaft penetrates through two opposite sides of the box body, the box body is respectively provided with a through cover and a blank cover on two opposite axial sides of the output shaft, one end of the output shaft is sealed by the blank cover, the other end of the output shaft penetrates through the blank cover, a first supporting structure is arranged on the blank cover in a protruding mode, and a second supporting structure is arranged on the blank cover in a protruding mode. The supporting point of the side where the output shaft is located is changed from the box body to the transparent cover and the blank cover of the side where the output shaft is located, so that the design of the box body is the same as that of an upper box body structure for installing the anchor, the universality of parts is improved, and the blank cover and the transparent cover do not need to be made into an embedded structure, and the installation and later maintenance are convenient; the output shaft bearing block is not required to be provided with a supporting boss, so that the thickness of the bearing block can be reduced, the material utilization rate of the box body is improved, and the processing difficulty of the box body is reduced. The utility model provides a speed reducer includes foretell gear box, and the manufacturing cost of speed reducer reduces, and maintainability improves.

Description

Gear box and speed reducer

Technical Field

The utility model relates to a speed reducer technical field especially relates to a gear box and speed reducer.

Background

The prior gear box generally adopts a three-pivot supporting structure, and the structure of the prior gear box is shown in figures 1-3. The first supporting point 2 'and the second supporting point 3' on the side of the output shaft are both arranged on the box body 1 ', namely two supporting seat bosses are processed on an output shaft bearing seat of the box body, the control of the size position and form and position tolerance of the two supporting seat bosses is troublesome, the material utilization rate of the box body 1' is reduced, the processing difficulty of the box body 1 'is improved, and the specification of the box body 1' is increased; if the positions of the two supporting points are deviated, the positions can be found only when the client side is assembled, and the repair of the box body 1' is time-consuming and labor-consuming. In addition, due to the limitation of space, in order to avoid the interference between the blank cap 4 ' and the transparent cap 5 ' and the installation support seat 6 ', the blank cap 4 ' and the transparent cap 5 ' need to be made into an embedded structure, and the installation and the maintenance are troublesome.

Therefore, it is desirable to provide a gear box and a speed reducer to solve the above problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear box and speed reducer, this gear box easy to assemble and later maintenance, cost reduction.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a gear box, includes box and output shaft, the output shaft runs through the relative both sides of box, the box in the axial relative both sides of output shaft are equipped with respectively and pass through lid and stifle, output shaft one end by stifle seals, and the other end passes pass through the lid, stifle epirelief is equipped with first bearing structure, it is equipped with second bearing structure to pass through the lid epirelief.

As the preferable technical scheme of the gearbox, the first supporting structure is convexly arranged on the surface of the blank cap, and the first supporting structure and the blank cap are integrally formed.

As a preferable technical solution of the above gear box, the second supporting structure is convexly disposed on the surface of the transparent cover, and the second supporting structure and the transparent cover are integrally formed.

As a preferable technical solution of the above gearbox, the first support structure, the spigot of the blank cap, the second support structure, the spigot of the through cap, and the bearing hole of the case are coaxially arranged.

As the preferable technical scheme of the gearbox, the spigot of the blank cap and the bearing hole of the box body, and the spigot of the transparent cap and the bearing hole of the box body are in clearance fit.

As the preferable technical scheme of the gearbox, sealing glue is arranged between the transparent cover and the box body and between the blank cover and the box body.

As the preferable technical scheme of the gearbox, the transparent cover and the blank cover are both connected to the box body through screws.

As the preferable technical scheme of the gearbox, the gearbox further comprises an oil seal and an oil seal pressing plate, the oil seal is arranged between the transparent cover and the output shaft, and the oil seal pressing plate is covered on the outer portion of the oil seal.

As a preferable technical solution of the above gear box, a third support structure is further provided on the case body, and the third support structure is provided on the high speed shaft side.

A reducer comprising a gearbox as described above.

Compared with the prior art, the utility model discloses an advantage and beneficial effect lie in:

compared with the prior art, the utility model changes the supporting point of the side of the output shaft of the gearbox from the box body to the transparent cover and the blank cover of the side of the output shaft, so that the box body design is the same as the upper box body structure of the foundation installation, the universality of parts is improved, and the blank cover and the transparent cover do not need to be made into an embedded structure, thereby facilitating the installation and later maintenance; the output shaft bearing block is not required to be provided with a supporting boss, so that the thickness of the bearing block can be reduced, the material utilization rate of the box body is improved, and the processing difficulty of the box body is reduced. The gearbox body can not deform during assembly or under the action of motive power; the additional radial force output is not conducted through the wall of the housing but directly through the hub bearing.

The utility model provides a speed reducer, including foretell gear box, the manufacturing cost of speed reducer reduces, and maintainability improves.

Drawings

FIG. 1 is a schematic structural view of a gearbox provided in the prior art;

FIG. 2 is a side view of a gearbox provided by the prior art;

FIG. 3 is a cross-sectional view of a gearbox provided by the prior art;

fig. 4 is a sectional view of a gear box according to an embodiment of the present invention.

The figures are labeled as follows:

1', a box body; 2', a first support point; 3', a second support point; 4', covering; 5', a transparent cover; 6', mounting a supporting seat; 7', a rubber rope;

1. a box body; 2. covering the blank with a cover; 3. a transparent cover; 4. an output shaft; 5. a first support structure; 6. a second support structure; 7. oil sealing; 8. an oil seal pressing plate; 9. a third support structure; 10. a semi-annular baffle.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly but via another feature. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment discloses a gear box, as shown in fig. 4, the gear box mainly comprises a box body 1 and an output shaft 4, the output shaft 4 penetrates through two opposite sides of the box body 1, a through cover 3 and a blank cover 2 are respectively arranged on the two axially opposite sides of the output shaft 4 of the box body 1, one end of the output shaft 4 is sealed by the blank cover 2, the other end of the output shaft penetrates through the through cover 3, a first supporting structure 5 is arranged on the blank cover 2 in a protruding mode, and a second supporting structure 6 is arranged on the blank cover 3 in a protruding mode.

Compared with the prior art, the supporting point of the output side of the gearbox is changed from the box body 1 to the transparent cover 3 and the blank cover 2 on the side where the output shaft 4 is located, so that the box body 1 is designed to have the same structure as the upper box body 1 for installing the ground feet, the universality of parts is improved, and the blank cover 2 and the transparent cover 3 do not need to be made into embedded structures, and the installation and later maintenance are convenient; the bearing seat of the output shaft 4 is not required to be processed with a supporting boss, so that the thickness of the bearing seat can be reduced, the material utilization rate of the box body 1 is improved, and the processing difficulty of the box body 1 is reduced. The gearbox body 1 can not deform during assembly or under the action of motive power; the additional radial force output is not transmitted through the wall of the housing 1 but directly through the hub bearing.

Further, a third supporting structure 9 is further disposed on the box body 1, and the third supporting structure 9 is disposed on the high-speed shaft side. The first support structure 5, the second support structure 6 and the third support structure 9 together form a three-pivot structure for fixing the gearbox.

Furthermore, the first supporting structure 5 is convexly arranged on the surface of the blank cap 2, and the first supporting structure 5 and the blank cap 2 are integrally formed, so that the processing is convenient, and the cost is reduced. The second supporting structure 6 is convexly arranged on the surface of the transparent cover 3, and the second supporting structure 6 and the transparent cover 3 are integrally formed, so that the processing is convenient, and the cost is reduced.

Preferably, the first support structure 5, the spigot of the blank cap 2, the second support structure 6, the spigot of the through cap 3 and the bearing hole of the box 1 are coaxially arranged. The coaxiality requirements are set between the first supporting structure 5 and the spigot of the blank cap 2 and between the second supporting structure 6 and the spigot of the transparent cap 3 so as to ensure the assembly precision, and the coaxiality requirements are determined according to actual conditions.

Further preferably, the spigot of the blank cap 2 and the bearing hole of the box body 1, the spigot of the transparent cap 3 and the bearing hole of the box body 1 are in clearance fit, and the fit tolerance is preferably H7/H6, so that the coaxiality is ensured, and the concentricity of the output shaft 4 and the motor can be kept unchanged after the speed reducer is disassembled

In the prior art, as shown in fig. 3, a rubber rope 7 ' needs to be installed between bearing holes of a blank cap 2 ' and a transparent cap 3 ' and a box body 1 ' for sealing so as to prevent lubricating oil from seeping out from a joint of a cover plate (including the blank cap and the transparent cap) and the box body 1 ', the rubber rope 7 ' is easy to age and cause oil leakage of rubber pieces, an embedded cover plate is troublesome to disassemble and assemble, and the rubber rope 7 ' can be disassembled and replaced after a box closing bolt is disassembled. In order to solve the technical problem, in the embodiment, sealants are respectively arranged between the transparent cover 3 and the box body 1 and between the blank cover 2 and the box body 1. By arranging the sealant on the joint end face of the cover plate and the box body 1, the structure of the rubber rope 7 'can be cancelled, oil leakage caused by aging of the rubber rope 7' is avoided, and the reliability and the maintainability of the gear box are improved. Optionally, the sealant in this embodiment is anaerobic sealant.

Furthermore, the transparent cover 3 and the blank cover 2 are both connected to the box body 1 through screws. Meanwhile, in order to ensure the sealing effect, the head of the screw does not protrude out of the surface of the cover plate. Optionally, the screw in this embodiment is a socket head cap screw.

In this embodiment, the gear box further includes an oil seal 7 and an oil seal pressing plate 8, the oil seal 7 is disposed between the transparent cover 3 and the output shaft 4 and used for sealing the output shaft 4 and preventing oil leakage, and the oil seal pressing plate 8 covers the oil seal 7. It should be noted that the arrangement of the oil seal 7 and the oil seal pressing plate 8 is prior art in the field, and will not be described herein.

Further, the gear box also comprises a semi-annular baffle plate 10, and when the gear box is installed, the speed reducer automatically slides to a proper position and is fixed on the transparent cover 3 through the semi-annular baffle plate 10 and is fixed on the second supporting structure 6 through bolts.

The embodiment also provides a speed reducer which comprises the gear box. The speed reducer has the advantages of reduced manufacturing cost and improved maintainability.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a gear box, its characterized in that includes box (1) and output shaft (4), output shaft (4) run through the relative both sides of box (1), box (1) in the axial relative both sides of output shaft (4) are equipped with respectively and pass through lid (3) and stifle (2), output shaft (4) one end by stifle (2) seal, the other end passes through pass through lid (3), stifle (2) epirelief is equipped with first bearing structure (5), it is equipped with second bearing structure (6) to pass lid (3) epirelief.

2. Gearbox according to claim 1, characterised in that said first support structure (5) is raised on the surface of said blank cap (2), said first support structure (5) and said blank cap (2) being integrally formed.

3. Gearbox according to claim 1, characterised in that said second support structure (6) is provided protruding from the surface of said transparent cover (3), said second support structure (6) being formed integrally with said transparent cover (3).

4. Gearbox according to claim 1, characterised in that the first support structure (5), the spigot of the blank cap (2), the second support structure (6), the spigot of the transparent cap (3) and the bearing hole of the box (1) are coaxially arranged.

5. The gearbox according to claim 4, characterised in that the spigot of the blank cap (2) and the bearing hole of the box body (1), the spigot of the through cap (3) and the bearing hole of the box body (1) are in clearance fit.

6. Gearbox according to claim 1, characterised in that sealing glue is provided both between said transparent cover (3) and said box (1) and between said blank cover (2) and said box (1).

7. Gearbox according to claim 1, characterised in that said transparent cover (3) and said blank cover (2) are both screwed to said box (1).

8. Gearbox according to claim 1, characterised in that it further comprises an oil seal (7) and an oil seal pressure plate (8), said oil seal (7) being arranged between said transparent cover (3) and said output shaft (4), said oil seal pressure plate (8) being arranged on the outside of said oil seal (7) in a covering manner.

9. Gearbox according to claim 1, characterised in that a third support structure (9) is arranged on the casing (1), which third support structure (9) is arranged on the high-speed shaft side.

10. A reduction gear unit comprising a gearbox according to any one of claims 1 to 9.