CN216873012U - Speed reduction formula all-in-one and sharing end cover thereof - Google Patents

Abstract

The utility model relates to a speed-reducing all-in-one machine and a common end cover thereof, wherein the common end cover is provided with a first side and a second side in the axial direction of the speed-reducing all-in-one machine, the first side is used for being assembled with a motor, the second side is used for being matched with a speed reducer in a rotating mode, and the common end cover comprises: the first cylinder is arranged on the first side of the common end cover and used for assembling a motor bearing in a tight fit manner; the second cylinder is arranged on the second side of the common end cover and used for assembling a speed reducer bearing in a tight fit manner; the center hole is coaxial with the first cylinder and the second cylinder and used for penetrating through the motor rotating shaft, wherein a mounting structure is arranged in the center hole and used for mounting an oil sealing device so as to block the circulation of a lubricating medium between the motor bearing and the speed reducer bearing. The oil sealing device prevents the mutual flow of lubricating media between the motor bearing and the speed reducer bearing, so that the lubricating performance of the motor and the speed reducer is guaranteed.

Description

Speed reduction formula all-in-one and sharing end cover thereof

Technical Field

The utility model relates to the field of motors, in particular to a speed reduction type all-in-one machine and a common end cover thereof.

Background

The motor is a common electrical device in industrial production, and operates on the principle of electromagnetic induction, and can realize the interconversion of mechanical energy and electric energy. When the motor carries out energy conversion, possess two major components that can do relative motion: a component that establishes an excitation magnetic field, and an induced component that induces an electromotive force and through which an operating current flows. Of these two components, the stationary one is called the stator and the one that performs a rotational movement is called the rotor.

The frequency converter can adjust the rotating speed and the power of the motor. In the prior art, for a specific purpose, a frequency converter and a motor can be integrated together to form a frequency conversion integrated machine, which is referred to as an integrated machine for short. In practical applications, for example, in working environments such as mines, a speed reducer (or a fluid coupling) needs to be connected to the outside of the integrated machine or the motor through a coupling, and finally, the output end of the speed reducer is connected to a load through the coupling. This kind of connected mode is comparatively complicated, and the cost is higher moreover, and the operation is also inconvenient inadequately. In particular, when working in a narrow working area such as a downhole area, it is difficult to install and use the above-described equipment and accessories.

Therefore, a technical scheme for integrating the speed reducer with the all-in-one machine also appears in the prior art. For example, chinese patent publication No. CN114017488A discloses a technical solution in which a motor and a speed reducer are integrally provided, in which a sun gear of the speed reducer is directly mounted on a rotating shaft of the motor, so that the speed reducer is disposed inside a housing of the motor. The technical scheme can greatly shorten the distance between the motor and the speed reducer, reduce the length of the whole mechanism and further reduce the volume and the occupied space of the all-in-one machine.

However, the transmission performance of the above technical solutions is still not stable and reliable enough, and the structure thereof needs to be improved to improve the stability. In actual use, both the motor and the reduction gear need to be lubricated. The motor generally needs to be lubricated by filling lubricating grease, for example, the lubricating grease is continuously filled into a bearing during the working process of the motor; the reduction gear generally needs to be lubricated by lubricating oil, and the lubricating oil of the reduction gear is replaced every maintenance cycle, for example. Therefore, it is also necessary to consider how to lubricate the integrally integrated motor and reducer in a narrow work place.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a speed reduction type all-in-one machine and a common end cover thereof, which are used for meeting the requirement of lubrication.

According to one aspect of the utility model, there is provided a common end cover for a deceleration unitary machine, the common end cover having a first side and a second side in an axial direction of the deceleration unitary machine, the first side for mating with a motor and the second side for mating with a speed reducer, the common end cover comprising: the first cylinder is arranged on the first side of the common end cover and used for assembling a motor bearing in a tight fit manner; the second cylinder is arranged on the second side of the common end cover and used for assembling a speed reducer bearing in a tight fit manner; the center hole is coaxial with the first cylinder and the second cylinder and used for penetrating through a motor rotating shaft, wherein an installation structure is arranged in the center hole and used for installing an oil sealing device so as to block the circulation of a lubricating medium between the motor bearing and the speed reducer bearing.

In one embodiment, the second cylinder has a stepped hole having a stepped surface facing the second side, and the stepped hole has a large-diameter section and a small-diameter section for fitting the speed reducer bearing.

In one embodiment, the diameter of the first cylinder is smaller than the diameter of the second cylinder.

In one embodiment, an oil filling channel and an oil discharging channel are arranged in the common end cover, and the oil filling channel comprises oil filling branches arranged in the second cylinder body and the first cylinder body; the oil discharge channel comprises oil discharge branches arranged in the second cylinder and the first cylinder; the oil injection passage is provided with an oil injection port on the circumferential surface of the second cylinder, and the oil discharge passage is provided with an oil discharge port on the circumferential surface of the second cylinder.

In one embodiment, the oil filling port and the oil drain port are provided with explosion-proof bolts.

In one embodiment, the periphery of the central hole is provided with an annular plate, the annular plate is provided with an axial dismounting hole, and the dismounting hole is used for: the motor bearing is in a communicated state when needing to be disassembled, and is in a sealed state when not needing to be disassembled.

In one embodiment, the disassembly hole is provided with pipe threads and bolts so that the disassembly hole is in a sealed state.

In one embodiment, the mounting structure includes a collar disposed on a first side of the central bore to retain the oil seal.

In one embodiment, the oil seal comprises more than two seal rings.

According to another aspect of the utility model, a speed-reducing all-in-one machine is provided, which comprises a motor and a speed reducer, and the common end cover of any one of the first aspect of the utility model, wherein the motor is assembled on a first side of the common end cover, and the speed reducer is rotatably assembled on a second side of the common end cover.

In summary, the utility model designs the common end cover for reducing the axial length of the speed reduction type all-in-one machine, and the common end cover is used as the front end cover of the motor and the rear end cover of the speed reducer; meanwhile, the oil sealing device is arranged in the central hole, so that the mutual flowing of lubricating media between the motor bearing and the speed reducer bearing is prevented, and the lubricating performance of the motor and the speed reducer is guaranteed.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is a schematic structural diagram of an external shape of a deceleration type all-in-one machine (without a speed reducer);

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a top view of the common end cap;

FIG. 4 is a sectional view A-A of FIG. 3;

FIG. 5 is a partial view of FIG. 4;

wherein, 1, the end cover is shared; 2. a motor; 3. a frequency converter; 4. a motor bearing; 5. a reducer bearing; 6. a central bore; 51. mounting positions of bearings of the speed reducer; 7. a motor shaft; 8. an oil seal device; 9. disassembling the hole; 10. a bolt; 11. a first cylinder; 12. a second cylinder; 13. a first oiling branch; 14. a second oiling branch; 15. an oil filling port; 17. a first oil port; 16. a second oil port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to a first aspect of the utility model, a common end cover for a deceleration unitary machine is provided. The following is described in detail with reference to a deceleration all-in-one machine.

Fig. 1 shows an outline structure schematic diagram of a deceleration type all-in-one machine (without a speed reducer). Fig. 2 shows a cross-sectional view of fig. 1. As shown in fig. 1, the integrated deceleration type machine comprises a motor 2 and a frequency converter 3, wherein the motor 2 comprises a shell, a rear end cover and a front end cover. Wherein the front end cover is the common end cover 1. That is, the common head cover 1 is not only a front head cover of the motor 2 but also a rear head cover of the reduction gear. As shown in fig. 2, the common end cover 1 has a first side and a second side in the axial direction of the integrated deceleration machine, the first side is used for being assembled with the motor 2, and the second side is used for being rotationally assembled with the speed reducer. Wherein, the second side includes the shoulder hole, and the shoulder hole has big footpath section and path section, and the path section is speed reducer bearing mounted position 51 for the installation speed reducer bearing to reduce the axial space of whole speed reduction formula all-in-one. The central hole 6 of the common end cover 1 is used for installing a motor rotating shaft, wherein the motor rotating shaft is provided with an internal spline and is connected with an external spline of a speed reducer shaft.

Fig. 3 shows a top view of the common end cap 1. Fig. 4 shows a cross-sectional view a-a of fig. 3. Fig. 5 shows a partial view of fig. 4.

As shown in fig. 3 to 5, in one embodiment, the common end cap 11 includes: the first cylinder 11 is arranged on the first side of the common end cover 1 and used for assembling the motor bearing 4 in a tight fit manner; the second cylinder 12 is arranged on the second side of the common end cover 1 and used for assembling the speed reducer bearing 5 in a tight fit mode; the central hole 6 is coaxially arranged with the first cylinder 11 and the second cylinder 12 and is used for penetrating through the motor rotating shaft 7. And a mounting structure is arranged in the central hole 6 and used for mounting an oil sealing device 8 so as to block the circulation of a lubricating medium between the motor bearing 4 and the speed reducer bearing 5.

As shown in fig. 4, wherein the first side is the left side and the second side is the right side. The hole inside the first barrel 11 forms a motor bearing chamber, and the motor bearing 4 is in interference fit with the first barrel 11, so that the motor bearing 4 is assembled in the motor bearing chamber. The hole inside the second cylinder 12 forms a reducer bearing chamber, and the reducer bearing 5 is in interference fit with the second cylinder 12, so that the reducer bearing 5 is assembled into the reducer bearing chamber. The central hole 6 penetrates through the motor bearing chamber and the reducer bearing chamber. The mounting structure includes: an annular plate is arranged between the motor bearing chamber and the reducer bearing chamber. The diameter of the through hole of the annular plate is larger than the diameter of the motor shaft 7, so that an oil seal device 8 can be installed in the space between the inside of the annular plate and the motor shaft 7.

In one application scenario, the motor bearings are lubricated by grease, and the reducer is lubricated by grease. Because the adopted lubricating media are different, if the lubricating oil enters the lubricating grease, the lubricating grease can be polluted, and the lubricating effect of the motor bearing is influenced; in a similar way, the lubricating grease entering the lubricating oil can bring certain influence to the lubricating system of the speed reducer. The central hole 6 will penetrate through the motor bearing chamber and the reducer bearing chamber, so the oil sealing device 8 is arranged in the through hole of the annular plate to block the lubricating medium on the two sides.

By way of example, the oil seal device 8 may employ a seal ring. The sealing ring is arranged on the motor rotating shaft 7 in a penetrating way. As shown in fig. 4, two sealing rings may be provided in order to ensure the sealing effect. In other embodiments, more sealing rings may be provided, as space allows. Wherein, the inner side of the annular plate is further provided with a ring platform which is arranged at the first side (left side) of the central hole 6 to block the oil sealing device 8.

In summary, the utility model designs the common end cover 1 for reducing the axial length of the speed reduction type all-in-one machine, and the common end cover 1 is used as a front end cover of the motor 2 and a rear end cover of the speed reducer; and meanwhile, an oil sealing device 8 is arranged in the central hole 6, so that the mutual flowing of lubricating media between the motor bearing chamber and the speed reducer bearing chamber is blocked, and the lubricating performance of the motor 2 and the speed reducer is guaranteed.

As shown in fig. 4, the second cylinder 12 has a stepped hole whose stepped surface faces the second side, and the stepped hole has a large-diameter section and a small-diameter section for fitting the reducer bearing 5. And the diameter of the first cylinder 11 is smaller than that of the second cylinder 12.

Specifically, the small-diameter section of the stepped hole can be used for forming the speed reducer bearing chamber, and the large-diameter section can be used for adapting to other parts of the speed reducer. The diameter of the motor bearing chamber is smaller than that of the reducer bearing chamber. The outer shape of the second cylinder 12 also presents a shape adapted to the stepped hole, that is, the outer wall of the second cylinder 12 is thinner, which is beneficial to reduce the volume and weight of the common end cap 1.

As shown in part (D) of fig. 5, an axial dismounting hole 9 is opened on the annular plate, and the dismounting hole 9 is used for: the motor bearing 4 is in a communicated state when needing to be disassembled, and is in a sealed state when the motor bearing 4 does not need to be disassembled. Pipe threads and bolts 10 are provided in the disassembly holes 9 so that the disassembly holes 9 are in a sealed state.

When the bearing is to be removed, the reduction gear bearing 5 needs to be removed first to remove the motor bearing 4. And the motor bearing 4 is assembled in the motor bearing chamber in an interference manner, the reducer bearing 5 is assembled in the reducer bearing chamber in an interference manner, and after the reducer bearing 5 is taken out, the motor bearing 4 cannot be directly taken out due to the interference of the oil sealing device 8 between the motor bearing chamber and the reducer bearing chamber. Therefore, an axial dismounting hole 9 is formed in the annular plate, and when the motor bearing 4 needs to be dismounted, a tool (such as a copper bar) can be used for penetrating through the dismounting hole 9 to knock the motor bearing 4, so that the motor bearing 4 is separated from the motor bearing chamber. When need not dismantle motor bearing 4 (when motor 2 normal use promptly), should dismantle hole 9 need be sealed, for example, set up pipe thread and bolt 10 in dismantling hole 9, use pipe thread and bolt 10 cooperation thread seal, guarantee that the lubricating medium between motor bearing room and the speed reducer bearing room can not flow each other. In other embodiments, other types of sealing structures may be used to seal the cover-removing opening 9, such as sealing plugs and the like.

The reducer bearing 5 and the motor bearing 4 both need to be lubricated, the lubricating medium of the reducer bearing 5 can be lubricating oil, and the lubricating medium of the motor bearing 4 can be lubricating oil or lubricating grease. In the embodiment, a structure special for lubricating the motor bearing 4 is also designed. An oil filling channel and an oil discharging channel are arranged in the common end cover 1, and the oil filling channel comprises oil filling branches arranged in the second cylinder 12 and the first cylinder 11; the oil discharge channel comprises oil discharge branches arranged in the second cylinder 12 and the first cylinder 11; the oil filling channel is provided with oil filling ports 15 on the circumferential surface of the second cylinder 12, and the oil discharge channel is provided with oil discharge ports on the circumferential surface of the second cylinder 12.

Fig. 4 illustrates the oil injecting passage, not the oil discharging passage, wherein the oil injecting passage includes the second oil injecting branch 14 of the second cylinder 12 and the first oil injecting branch 13 of the first cylinder 11. During oil injection, lubricating oil (or grease) enters the second cylinder 12 through the second oil injection branch 14, then is communicated with the first oil injection branch 13 through a pipeline (such as a copper pipe (not shown)) inside the motor 2, enters the first cylinder 11 through the first oil injection branch 13, and finally enters the motor bearing chamber. An oil filling port 15 is formed in the circumferential surface of the second cylinder 12 of the second oil filling branch 14, and a second oil port 16 is formed in the end surface of the second cylinder 12 of the second oil filling branch 14; one end of the first oil injection branch 13 is a first oil port 17, the first oil port 17 is disposed on the circumferential surface of the first cylinder 11, and the other end of the first oil injection branch 13 is communicated with the motor bearing chamber, for example, the other end of the first oil injection branch 13 may be connected with an oil passage of an inner cover of a motor bearing, so as to be communicated with the motor bearing chamber. Lubricating medium can be injected through the oil injection port 15, and the lubricating medium enters the second oil port 16 through the second oil injection branch 14, enters the first oil port 17 through the copper pipe, and finally enters the motor bearing chamber.

The structure of oil extraction passageway can be the exact same with the structure of oiling passageway, and the oil extraction passageway can set up in motor 2 below to in the effect of through gravity realize the oil extraction. By way of example, the oil discharge passage includes the second oil discharge branch of the second barrel 12 and the first oil discharge branch of the first barrel 11. During the oil extraction, the first barrel 11 of motor bearing room's lubricating oil (or lubricating grease) gets into through first oil extraction branch road, then passes through the inside pipeline of motor 2 (like the copper pipe) and communicates the second oil extraction branch road, gets into second barrel 12 through the second oil extraction branch road, finally discharges the motor 2 outside. An oil discharge port is formed in the circumferential surface of the second cylinder 12 of the second oil discharge branch, and a third oil port is formed in the end surface of the second cylinder 12 of the second oil discharge branch; one end of the first oil discharge branch is a fourth oil port, the fourth oil port is arranged on the circumferential surface of the first cylinder 11, the other end of the first oil discharge branch is communicated with the motor bearing chamber, for example, the other end of the first oil discharge branch can be connected with an oil duct of an inner cover of a motor bearing, so that the motor bearing chamber is communicated. The lubricating medium of the motor bearing chamber reaches the fourth oil port through the first oil discharge branch, then reaches the third oil port through the copper pipe, and then reaches the oil discharge port through the second oil discharge branch, and is discharged outside the motor 2 through the oil discharge port.

The first oil injection branch 13 and the second oil injection branch 14 are both in a bent shape, for example, may be in an L shape, so as to facilitate machining and forming. Cooling water channels may be disposed in the second cylinder 12 and the first cylinder 11, and in order to avoid the cooling water channels, the oil injection branch and the oil discharge branch in this embodiment are disposed at portions close to the edges of the second cylinder 12 and the first cylinder 11. In order to adapt to the appearance structure of the common end cover 1, the oil injection channel and the oil discharge channel are divided into two branches, and the branches are connected through a pipeline (such as a copper pipe) inside the motor 2, so that the volume and the weight of the common end cover 1 can be reduced.

Further, considering that the speed reduction type all-in-one machine is an explosion-proof motor, the explosion-proof motor is a motor which can be used in flammable and explosive places. In a mine, the external environment contains flammable and explosive gases, electric sparks can be generated inside the motor, and therefore the deceleration all-in-one machine adopts the explosion-proof shell to separate an electric part which can generate the sparks, the electric arcs and dangerous temperature from the surrounding gases. Therefore, the existence of oiling passageway and oil extraction passageway probably can make the inside and the outside intercommunication of motor, has reduced the explosion-proof grade of motor, brings certain safety risk. For this reason, this embodiment has set up explosion-proof bolt at oiling mouth 15 and oil drain port, will explosion-proof bolt install in oiling mouth and oil drain port when not carrying out oiling and oil drain to the explosion-proof grade of speed reduction formula all-in-one has been promoted.

According to another aspect of the utility model, the utility model further provides a speed-reducing all-in-one machine, which comprises a motor, a speed reducer and a frequency converter, wherein the motor and the speed reducer are connected through the common end cover of the first aspect of the utility model, namely the motor is assembled on a first side of the common end cover, and the speed reducer is rotatably assembled on a second side of the common end cover. Since the structure of the common end cap has been described in detail above, it will not be described in detail here. In general, due to the adoption of the common end cover, the speed-reducing all-in-one machine has shorter axial length and stronger operation stability; because the oil sealing device is arranged in the central hole, the mutual flow of lubricating media between the motor bearing and the reducer bearing is blocked, and the lubricating performance of the motor and the reducer is ensured; through setting up independent oiling passageway and oil extraction passageway for the motor, be convenient for carry out oiling and oil extraction operation to the motor.

In the above description of the present specification, the terms "fixed," "mounted," "connected," or "connected," and the like, are to be construed broadly unless otherwise expressly specified or limited. For example, with the term "coupled", it can be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship. Therefore, unless the specification explicitly defines otherwise, those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal terms for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.

While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the utility model described herein may be employed in practicing the utility model. It is intended that the following claims define the scope of the utility model and that the module compositions, equivalents, or alternatives falling within the scope of these claims be covered thereby.

Claims (10)

1. A common end cover for a reduction kiosk, the common end cover having a first side and a second side in an axial direction of the reduction kiosk, the first side for mating with a motor, the second side for mating with a reducer, the common end cover comprising:

the first cylinder is arranged on the first side of the common end cover and used for assembling a motor bearing in a tight fit manner;

the second cylinder is arranged on the second side of the common end cover and used for assembling a speed reducer bearing in a tight fit manner;

the center hole is coaxial with the first cylinder and the second cylinder and used for penetrating through a motor rotating shaft, wherein an installation structure is arranged in the center hole and used for installing an oil sealing device so as to block the circulation of a lubricating medium between the motor bearing and the speed reducer bearing.

2. The common end cap of claim 1, wherein the second cylinder has a stepped bore with a stepped face facing the second side, the stepped bore having a large diameter section and a small diameter section, the small diameter section being used for assembling the reducer bearing.

3. The common end cap of claim 2, wherein the diameter of the first cylinder is smaller than the diameter of the second cylinder.

4. The common end cap of claim 3, wherein an oil filling channel and an oil discharging channel are provided in the common end cap, and the oil filling channel comprises oil filling branches provided in the second cylinder and the first cylinder; the oil discharge channel comprises oil discharge branches arranged in the second cylinder and the first cylinder;

the oil injection passage is provided with an oil injection port on the circumferential surface of the second cylinder, and the oil discharge passage is provided with an oil discharge port on the circumferential surface of the second cylinder.

5. The common end cap of claim 4, wherein said oil fill port and said oil drain port are provided with explosion proof bolts.

6. The common end cap of claim 1, wherein the central hole is peripherally provided with an annular plate, the annular plate is provided with an axial dismounting hole, and the dismounting hole is used for: the motor bearing is in a communicated state when needing to be disassembled, and is in a sealed state when not needing to be disassembled.

7. The common end cap of claim 6, wherein the removal hole has a pipe thread and a bolt therein to seal the removal hole.

8. The common end cover of claim 1, wherein the mounting structure comprises a collar disposed on a first side of the central bore to retain the oil seal.

9. The common end cap of claim 8, wherein the oil seal comprises more than two seal rings.

10. A unitary speed-reducing machine comprising a motor and a speed reducer, and a common end cap according to any one of claims 1 to 9, the motor being mounted to a first side of the common end cap and the speed reducer being rotatably mounted to a second side of the common end cap.

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