CN212899634U - Worm gear speed reducer - Google Patents

Abstract

The utility model provides a worm gear speed reducer, worm gear speed reducer includes: the device comprises a shell, a worm, a bearing, an output shaft, a worm wheel, a connecting key, an oil filling hole and an oil plug; the worm penetrates through the shell, at least part of the worm is embedded in the shell, and two ends of the worm extend out of the shell; the two bearings are respectively sleeved at two ends of the worm and embedded in the shell; the output shaft penetrates through the shell, the output shaft is positioned above the worm, at least part of the output shaft is embedded into the shell, the output shaft is rotatably connected with the shell, and one end of the output shaft extends out of the outer side of the shell; the worm wheel is sleeved outside the output shaft, and the worm wheel is meshed with the worm; the connecting key is embedded into the output shaft and the worm wheel at the same time, so that the output shaft and the worm wheel do not rotate relatively; at least one oil filling hole is arranged at the upper part of the shell, and the oil filling hole is communicated with the inner part of the shell; the oil plug is an elastic body and is embedded into the oil filling hole; wherein, the output shaft is perpendicular to the worm.

Description

Worm gear speed reducer

Technical Field

The utility model relates to a speed reducer technical field particularly, relates to a worm gear speed reducer.

Background

Currently, in the related art, a worm gear reducer, which is a relatively precise machine used for the purpose of reducing the rotation speed and increasing the torque, plays a role of matching the rotation speed and transmitting the torque between a prime mover and a working machine or an actuator. The existing worm gear reducer is connected with the motor through one end of the worm, and by adopting the structure, the positions of the worm gear reducer and the motor are relatively fixed, so that the applicability of the worm gear reducer is reduced, and the application range of a product is limited.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

Therefore, the utility model provides a worm gear speed reducer.

In view of this, the utility model provides a worm gear reducer, worm gear reducer includes: the device comprises a shell, a worm, a bearing, an output shaft, a worm wheel, a connecting key, an oil filling hole and an oil plug; the worm penetrates through the shell, at least part of the worm is embedded in the shell, and two ends of the worm extend out of the shell; the two bearings are respectively sleeved at two ends of the worm and embedded in the shell; the output shaft penetrates through the shell, the output shaft is positioned above the worm, at least part of the output shaft is embedded into the shell, the output shaft is rotatably connected with the shell, and one end of the output shaft extends out of the outer side of the shell; the worm wheel is sleeved outside the output shaft, and the worm wheel is meshed with the worm; the connecting key is embedded into the output shaft and the worm wheel at the same time, so that the output shaft and the worm wheel do not rotate relatively; at least one oil filling hole is arranged at the upper part of the shell, and the oil filling hole is communicated with the inner part of the shell; the oil plug is an elastic body and is embedded into the oil filling hole; wherein, the output shaft is perpendicular to the worm.

In the technical scheme, firstly, the worm penetrates through the shell, and two ends of the worm extend out of the shell, so that two ends of the worm can be connected with the input motor; secondly, the two bearings are respectively sleeved at the two ends of the worm and embedded into the shell to realize the rotary connection between the worm and the shell, so that the flexibility of the rotation of the worm is improved; thirdly, the output shaft penetrates through the shell and is in rotary connection with the shell, so that the output shaft and the shell can rotate relatively; thirdly, the worm wheel is sleeved on the outer side of the output shaft, the connecting key is embedded into the output shaft and the worm wheel at the same time, so that the output shaft and the worm wheel do not rotate relatively, meanwhile, the worm wheel is meshed with the worm, so that the worm drives the worm wheel to rotate, the output shaft is driven to rotate, and power output of the worm wheel is achieved; thirdly, the at least one oil filling hole is arranged at the upper part of the shell and communicated with the inside of the shell, so that lubricating oil is filled into the inside of the shell through the oil filling hole, and heat generated by meshing of the worm wheel and the worm is dissipated through the lubricating oil when the worm wheel and the worm are meshed, so that the worm wheel and the worm are prevented from being damaged due to overhigh heat; thirdly, the oil plug is arranged to be an elastic body and is embedded into the oil filling hole, so that the lubricating oil is prevented from volatilizing from the oil filling hole. By adopting the structure, the two ends of the worm extend out of the shell to realize that the two ends of the worm can be connected with the input motor, thereby improving the applicability of the product, expanding the application range of the product, and changing the rotating direction of the worm gear reducer by changing the connecting position of the motor and the worm to realize the conversion of positive rotation and reverse rotation of the worm gear reducer. In addition, the output shaft is perpendicular to the worm, so that the power input direction and the power output direction of the worm gear speed reducer are perpendicular to each other, and the applicability of the product is improved.

Specifically, the two end sleeves of the output shaft are provided with bearings, and the bearings are embedded into the shell.

Additionally, the utility model provides an among the above-mentioned technical scheme worm gear reducer can also have following additional technical characteristic:

in the above technical solution, preferably, the worm gear reducer further includes: an oil discharge hole, an internal thread and an oil plug; the oil discharge hole is arranged at the lower part of the shell and communicated with the inside of the shell; the internal thread is arranged on the inner wall of the oil discharge hole; the outer wall of the oil plug is provided with external threads, and the oil plug is embedded into the oil discharge hole; wherein the external thread is matched with the internal thread.

In this technical scheme, through setting up the oil drain hole in the lower part of casing to be linked together the inside of oil drain hole and casing, with the realization with the lubricating oil in the casing through the oil drain hole discharge, thereby realize the change to lubricating oil in the casing. Set up the internal thread through on the inner wall with the oil drain hole, set up the external screw thread on the outer wall that will oil stifled to in with oil stifled embedding oil drain hole, because external screw thread and internal thread looks adaptation, consequently realized that oil stifled passes through threaded connection with the oil drain hole, thereby avoid worm gear reducer when normal use, lubricating oil flows through the oil drain hole, in order to avoid the waste of lubricating oil.

In the above technical solution, preferably, the worm gear reducer further includes: an oil measuring hole and an oil needle; the oil measuring hole is arranged at the top of the shell and communicated with the shell; the oil needle passes through the oil measuring hole and then is embedded into the shell.

In this technical scheme, through setting up the top at the casing with surveying the oilhole to pass the survey oilhole with the oil needle after, in the embedding casing, in order to realize measuring the inside oil mass of casing through the oil needle, thereby avoid taking place because of the too little condition that can't carry out the heat dissipation to worm gear in the casing oil mass.

In the above technical solution, preferably, the worm gear reducer further includes: an observation port and a cover plate; the observation port is arranged at the top of the shell; the cover plate covers the observation opening, and the cover plate is fixed on the shell.

In the technical scheme, the observation port is arranged at the top of the shell to observe the working condition inside the worm gear reducer; the observation opening is covered by the cover plate, and the cover plate is fixed on the shell, so that the observation opening is sealed.

In particular, the cover plate is a transparent cover plate.

In the above technical solution, preferably, the worm gear reducer further includes: a first spacer ring and a first end cap; the first spacing ring is sleeved on the outer side of the worm, one end of the first spacing ring is attached to the worm, and the other end of the first spacing ring is attached to one of the bearings; the first end cover is sleeved on the outer side of the worm and fixed on the shell, and the first end cover is attached to one of the bearings.

In the technical scheme, the first spacing ring is sleeved on the outer side of the worm, one end of the first spacing ring is attached to the worm, the other end of the first spacing ring is attached to one of the bearings, and therefore one end of the bearing is limited; simultaneously, establish the outside at the worm through overlapping first end cover, fix first end cover on the casing to laminate first end cover and one of them bearing mutually, carry on spacingly to the realization to the other end of this bearing, thereby promote the stability of this bearing.

In the above technical solution, preferably, the worm gear reducer further includes: a first framework oil seal; the first framework oil seal sleeve is arranged on the outer side of the worm, and the first framework oil seal is embedded into the first end cover.

In this technical scheme, establish in the outside of worm through first skeleton oil blanket cover to in imbedding first end cover with first skeleton oil blanket, seal the output shaft in order to realize preventing that the lubricating oil in the casing from flowing out from first end cover.

In the above technical solution, preferably, the worm gear reducer further includes: a second spacer ring and a second end cap; the second spacing ring is sleeved on the outer side of the worm, one end of the second spacing ring is attached to the worm, and the other end of the second spacing ring is attached to the other bearing; the second end cover is sleeved on the outer side of the worm and fixed on the shell, and the second end cover is attached to the other bearing.

In the technical scheme, the second spacing ring is sleeved on the outer side of the worm, one end of the second spacing ring is attached to the worm, and the other end of the second spacing ring is attached to the other bearing, so that one end of the bearing is limited; simultaneously, establish the outside at the worm through the cover with the second end cap, fix the second end cap on the casing to laminate second end cap and another bearing mutually, carry on spacingly to the realization to the other end of this bearing, thereby promote the stability of this bearing.

In the above technical solution, preferably, the worm gear reducer further includes: a second framework oil seal; the second framework oil seal is sleeved on the outer side of the worm, and the second framework oil seal is embedded into the second end cover.

In this technical scheme, establish the outside at the worm through second skeleton oil blanket cover to in embedding second skeleton oil blanket second end cover, seal the output shaft in order to realize, flow from the second end cover with the lubricating oil that prevents in the casing.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural diagram of a worm gear reducer according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of a worm gear reducer according to another embodiment of the present invention;

fig. 3 is a partial enlarged view of a portion a of fig. 2 showing a structural schematic diagram of a worm gear reducer according to another embodiment of the present invention;

fig. 4 is a partial enlarged view of a portion B of fig. 2 showing a structural schematic diagram of a worm gear reducer according to another embodiment of the present invention;

wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

12 shell, 14 worm, 16 bearing, 18 output shaft, 20 worm wheel, 22 connecting key, 24 oil filling hole, 26 oil plug, 28 oil discharging hole, 30 oil plug, 32 oil measuring hole, 34 oil needle, 36 observation hole, 38 cover plate, 40 first spacer ring, 42 first end cover, 44 first framework oil seal, 46 second spacer ring, 48 second end cover and 50 second framework oil seal.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The worm gear reducer according to some embodiments of the present invention is described below with reference to fig. 1 to 4.

In the embodiment of the present invention, as shown in fig. 1 to 4, the utility model provides a worm gear reducer, worm gear reducer includes: the housing 12, the worm 14, the bearing 16, the output shaft 18, the worm wheel 20, the connecting key 22, the oil filling hole 24 and the oil plug 26; the worm 14 penetrates through the shell 12, at least part of the worm 14 is embedded in the shell 12, and two ends of the worm 14 extend out of the shell 12; the two bearings 16 are respectively sleeved at two ends of the worm 14, and the bearings 16 are embedded in the shell 12; the output shaft 18 penetrates through the shell 12, the output shaft 18 is positioned above the worm 14, at least part of the output shaft 18 is embedded in the shell 12, the output shaft 18 is rotatably connected with the shell 12, and one end of the output shaft 18 extends out of the shell 12; the worm wheel 20 is sleeved on the outer side of the output shaft 18, and the worm wheel 20 is meshed with the worm 14; the connecting key 22 is embedded into the output shaft 18 and the worm wheel 20 at the same time, so that the output shaft 18 and the worm wheel 20 do not rotate relatively; at least one oil filler hole 24 is provided in an upper portion of the case 12, and the oil filler hole 24 communicates with the inside of the case 12; the oil plug 26 is an elastic body, and the oil plug 26 is embedded into the oil hole 24; wherein the output shaft 18 is perpendicular to the worm 14.

In this embodiment, first, the worm 14 is inserted through the housing 12, and both ends of the worm 14 protrude outside the housing 12, so that both ends of the worm 14 can be connected to the input motor; secondly, the two bearings 16 are respectively sleeved at the two ends of the worm 14, and the bearings 16 are embedded in the shell 12, so that the worm 14 is rotatably connected with the shell 12, and the rotation flexibility of the worm 14 is improved; thirdly, the output shaft 18 and the shell 12 can rotate relatively by penetrating the output shaft 18 through the shell 12 and enabling the output shaft 18 and the shell 12 to be connected in a rotating mode; thirdly, the worm wheel 20 is sleeved on the outer side of the output shaft 18, the connecting key 22 is embedded into the output shaft 18 and the worm wheel 20 at the same time, so that the output shaft 18 and the worm wheel 20 do not rotate relatively, meanwhile, the worm wheel 20 is meshed with the worm 14, so that the worm 14 drives the worm wheel 20 to rotate, the output shaft 18 is driven to rotate, and the power output of the worm wheel 20 is realized; thirdly, by arranging at least one oil filling hole 24 at the upper part of the shell 12 and communicating the oil filling hole 24 with the inside of the shell 12, lubricating oil is filled into the inside of the shell 12 through the oil filling hole 24, so that when the worm wheel 20 is meshed with the worm 14, heat generated by meshing the worm wheel 20 and the worm 14 is dissipated through the lubricating oil, and the worm wheel 20 and the worm 14 are prevented from being damaged due to overhigh heat; again, by providing the oil plug 26 as an elastic body and embedding the oil plug 26 in the oil filler hole 24, the volatilization of the lubricating oil from the oil filler hole 24 is avoided. By adopting the structure, the two ends of the worm 14 extend out of the shell 12, so that the two ends of the worm 14 can be connected with the input motor, the applicability of the product is improved, the application range of the product is expanded, the rotating direction of the worm gear speed reducer is changed by changing the connecting position of the motor and the worm 14, and the conversion of positive rotation and reverse rotation of the worm gear speed reducer is realized. Furthermore, the output shaft 18 is perpendicular to the worm 14, so that the power input direction and the power output direction of the worm gear reducer are perpendicular to each other, and the applicability of the product is improved.

Specifically, both ends of the output shaft 18 are fitted with bearings 16, and the bearings 16 are embedded in the housing 12.

In an embodiment of the present invention, preferably, as shown in fig. 1 to 4, the worm gear reducer further includes: an oil drain hole 28, internal threads and an oil plug 30; an oil discharge hole 28 is provided in the lower portion of the housing 12, and the oil discharge hole 28 communicates with the inside of the housing 12; the internal thread is provided on the inner wall of the oil drain hole 28; the outer wall of the oil plug 30 is provided with external threads, and the oil plug 30 is embedded into the oil discharge hole 28; wherein the external thread is matched with the internal thread.

In this embodiment, the oil in the housing 12 is replaced by disposing the oil discharge hole 28 in the lower portion of the housing 12 and communicating the oil discharge hole 28 with the interior of the housing 12 to discharge the lubricating oil in the housing 12 through the oil discharge hole 28. Through setting up the internal thread on the inner wall with oil drain hole 28, set up the external screw thread on the outer wall with oily stifled 30 to with oily stifled 30 embedding oil drain hole 28 in, because external screw thread and internal thread looks adaptation, consequently realized that oily stifled 30 passes through threaded connection with oil drain hole 28, thereby avoid worm gear reducer when normal use, lubricating oil flows through oil drain hole 28, in order to avoid the waste of lubricating oil.

In an embodiment of the present invention, preferably, as shown in fig. 1 to 4, the worm gear reducer further includes: the oil measuring hole 32 and the oil needle 34; the oil measuring hole 32 is arranged at the top of the shell 12, and the oil measuring hole 32 is communicated with the shell 12; the oil needle 34 is inserted into the housing 12 after passing through the oil measuring hole 32.

In this embodiment, the oil measuring hole 32 is disposed at the top of the housing 12, and the oil needle 34 is inserted into the housing 12 after passing through the oil measuring hole 32, so as to measure the amount of oil inside the housing 12 through the oil needle 34, thereby avoiding the situation that the worm wheel 20 and the worm 14 cannot be cooled due to too little oil in the housing 12.

In an embodiment of the present invention, preferably, as shown in fig. 1 to 4, the worm gear reducer further includes: viewing port 36 and cover 38; viewing port 36 is disposed at the top of housing 12; a cover plate 38 covers the viewing port 36, and the cover plate 38 is fixed to the housing 12.

In the embodiment, the observation port 36 is arranged at the top of the shell 12, so that the observation port 36 observes the working condition inside the worm speed reducer; the viewing port 36 is closed by closing the cover 38 over the viewing port 36 and securing the cover 38 to the housing 12.

Specifically, the cover 38 is a transparent cover 38.

In an embodiment of the present invention, preferably, as shown in fig. 1 to 4, the worm gear reducer further includes: a first spacer ring 40 and a first end cap 42; the first spacing ring 40 is sleeved on the outer side of the worm 14, one end of the first spacing ring 40 is attached to the worm 14, and the other end of the first spacing ring 40 is attached to one of the bearings 16; the first end cap 42 is disposed on the outer side of the worm 14, the first end cap 42 is fixed on the housing 12, and the first end cap 42 is attached to one of the bearings 16.

In this embodiment, the first spacer ring 40 is sleeved outside the worm 14, one end of the first spacer ring 40 is attached to the worm 14, and the other end of the first spacer ring 40 is attached to one of the bearings 16, so as to limit one end of the bearing 16; meanwhile, the first end cap 42 is sleeved outside the worm 14, the first end cap 42 is fixed on the housing 12, and the first end cap 42 is attached to one of the bearings 16, so that the other end of the bearing 16 is limited, and the stability of the bearing 16 is improved.

In an embodiment of the present invention, preferably, as shown in fig. 1 to 4, the worm gear reducer further includes: a first framework oil seal 44; the first frame oil seal 44 is sleeved on the outer side of the worm 14, and the first frame oil seal 44 is embedded in the first end cover 42.

In this embodiment, the first framework oil seal 44 is sleeved on the outer side of the worm 14, and the first framework oil seal 44 is embedded in the first end cover 42 to seal the output shaft 18 so as to prevent the lubricating oil in the housing 12 from flowing out of the first end cover 42.

In an embodiment of the present invention, preferably, as shown in fig. 1 to 4, the worm gear reducer further includes: a second spacer ring 46 and a second end cap 48; the second spacer ring 46 is sleeved on the outer side of the worm 14, one end of the second spacer ring 46 is attached to the worm 14, and the other end of the second spacer ring 46 is attached to the other bearing 16; the second end cap 48 is sleeved on the outer side of the worm 14, the second end cap 48 is fixed on the housing 12, and the second end cap 48 is attached to the other bearing 16.

In this embodiment, the second spacer ring 46 is sleeved outside the worm 14, one end of the second spacer ring 46 is attached to the worm 14, and the other end of the second spacer ring 46 is attached to another bearing 16, so as to limit one end of the bearing 16; meanwhile, the second end cap 48 is sleeved on the outer side of the worm 14, the second end cap 48 is fixed on the housing 12, and the second end cap 48 is attached to another bearing 16, so that the other end of the bearing 16 is limited, and the stability of the bearing 16 is improved.

In an embodiment of the present invention, preferably, as shown in fig. 1 to 4, the worm gear reducer further includes: a second skeleton oil seal 50; the second skeleton oil seal 50 is fitted around the outside of the worm 14, and the second skeleton oil seal 50 is fitted into the second end cap 48.

In this embodiment, the second frame oil seal 50 is sleeved on the outer side of the worm 14, and the second frame oil seal 50 is embedded in the second end cover 48 to seal the output shaft 18 so as to prevent the lubricating oil in the housing 12 from flowing out of the second end cover 48.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, 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; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims (8)

1. A worm gear reducer, characterized in that the worm gear reducer comprises:

a housing;

the worm penetrates through the shell, at least part of the worm is embedded into the shell, and two ends of the worm extend out of the shell;

the two bearings are respectively sleeved at two ends of the worm and embedded into the shell;

the output shaft penetrates through the shell, the output shaft is positioned above the worm, at least part of the output shaft is embedded into the shell, the output shaft is rotatably connected with the shell, and one end of the output shaft extends out of the outer side of the shell;

the worm wheel is sleeved outside the output shaft and is meshed with the worm;

the connecting key is embedded into the output shaft and the worm wheel at the same time, so that the output shaft and the worm wheel do not rotate relatively;

the oil filling hole is arranged at the upper part of the shell and is communicated with the inner part of the shell;

the oil plug is an elastic body and is embedded into the oil filling hole;

wherein the output shaft is perpendicular to the worm.

2. The worm gear reducer according to claim 1, further comprising:

the oil discharge hole is arranged at the lower part of the shell and communicated with the inside of the shell;

an internal thread provided on an inner wall of the oil drain hole;

the outer wall of the oil plug is provided with an external thread, and the oil plug is embedded into the oil discharge hole;

wherein the external thread is adapted to the internal thread.

3. The worm gear reducer according to claim 2, further comprising:

the oil measuring hole is arranged at the top of the shell and communicated with the shell;

and the oil needle is embedded into the shell after penetrating through the oil measuring hole.

4. The worm gear reducer of claim 3, further comprising:

the observation port is arranged at the top of the shell;

the cover plate covers the observation opening, and is fixed on the shell.

5. The worm gear reducer of claim 4, further comprising:

the first spacer ring is sleeved on the outer side of the worm, one end of the first spacer ring is attached to the worm, and the other end of the first spacer ring is attached to one of the bearings;

the first end cover is sleeved on the outer side of the worm, the first end cover is fixed on the shell, and the first end cover is attached to one of the bearings.

6. The worm gear reducer of claim 5, further comprising:

the first framework oil seal is arranged on the outer side of the worm, and the first framework oil seal is embedded into the first end cover.

7. The worm gear reducer of claim 6, further comprising:

the second spacer ring is sleeved on the outer side of the worm, one end of the second spacer ring is attached to the worm, and the other end of the second spacer ring is attached to the other bearing;

and the second end cover is sleeved on the outer side of the worm, the second end cover is fixed on the shell, and the second end cover is attached to the other bearing.

8. The worm gear reducer according to claim 7, further comprising:

and the second framework oil seal is sleeved on the outer side of the worm, and the second framework oil seal is embedded in the second end cover.

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