CN211852733U

CN211852733U - Shell of speed reducer

Info

Publication number: CN211852733U
Application number: CN202020307613.0U
Authority: CN
Inventors: 丁海浩; 杨斌; 汪斌
Original assignee: Zhejiang Yutian New Energy Technology Co ltd
Current assignee: Zhejiang Yutian New Energy Technology Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-11-03
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a casing of reduction gear relates to automobile parts technical field, and its technical scheme main points are: including back lid and protecgulum, the inboard upper end of back lid is provided with the gas collecting channel, the gas vent I of UNICOM gas collecting channel is seted up in the outside of gas collecting channel, and gas vent one is located the interval and has been seted up a plurality of disconnected groove I that separate, gas vent one outside is provided with can be with separating the apron that disconnected groove I sheltered from, the apron is provided with at a distance from the terminal surface of disconnected groove I and separates disconnected groove two, cut off groove two and cut off groove one-to-one and set up, and set up the spread groove with a plurality of two looks UNICOMs of separating the groove on the apron, gas vent two has been seted up to the tank bottom of keeping away from the two of. Because the first partition grooves are not communicated and are more in number, external impurities can enter the shell from the first exhaust port only through the first partition grooves, the difficulty that the external impurities enter the shell is increased, and the purpose that the external impurities cannot enter the shell easily is achieved.

Description

Shell of speed reducer

Technical Field

The utility model relates to an automobile parts technical field, in particular to casing of reduction gear.

Background

Reduction gearboxes, also known as reducers or reducers, generally include a housing and a gear set disposed within the housing. To prevent abnormal wear of the gear set during operation thereof, the gear set is typically sealed within a housing; and simultaneously, lubricating oil is added to the gear sets to reduce friction generated between the gear sets. After the speed reducer is used for a long time, the temperature inside the shell rises, and no effective cooling measure exists, so that lubricating oil in the shell generates lubricating oil steam under the high-temperature condition, and the lubricating oil steam is stored too much and is easy to explode in the shell. Therefore, most retarders are provided with a breather valve outside the housing to vent the lubricant vapor inside the housing.

At present, the breather valve on the general reduction gear is in the normal open state when the operation, and a small amount of breather valve products have also been done some sealedly when not ventilating, but sealed effect is limited, leads to in the outside impurity of casing easily enters into the casing to influence the normal work of gear train, and then reduced the life of reducing gear box.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a casing of reduction gear, it has the difficult advantage that gets into in the casing of outside impurity.

The above technical purpose of the present invention can be achieved by the following technical solutions: a shell of a speed reducer comprises a rear cover and a front cover, wherein the front cover and the rear cover are matched to form an inner cavity of the speed reducer, and is detachably connected through a connecting piece, the inner side of the upper end of the rear cover is provided with a gas collecting groove, the outer side of the gas collecting groove is provided with a first gas outlet communicated with the gas collecting groove, a plurality of first isolating grooves are arranged at one position of the exhaust port at intervals, a cover plate capable of covering the first isolating grooves is arranged on the outer side of the first exhaust port, the end surface of the cover plate facing the first partition grooves is provided with second partition grooves which are arranged corresponding to the first partition grooves one by one, and the cover plate is provided with a plurality of connecting grooves communicated with the partition grooves II, the bottom of the partition groove II far away from the exhaust port I is provided with an exhaust port II, and the exhaust port II is communicated with the exhaust port I through the connecting grooves.

According to the technical scheme, after the lubricating oil in the shell is used for a long time, the temperature of the lubricating oil rises and lubricating oil steam is generated, the lubricating oil steam is upwards collected in the gas collecting groove and then enters the first partition groove communicated with the first exhaust port through the first exhaust port, the lubricating oil steam in the first partition groove enters the second partition groove and then is discharged out of the shell from the second exhaust port through the connecting groove, the discharging of the lubricating oil steam is realized, and impurities are not easy to enter the shell in the discharging process of the lubricating oil steam;

after the temperature drops in the casing, outside impurity can follow gas vent two and get into the wall groove one and separate the groove two with gas vent two phase intercommunication in, because cut off groove one and not UNICOM, outside impurity in cutting off the groove one need through the relatively higher spread groove side of position can get into adjacent wall groove one, and simultaneously, the figure that separates groove one is more, outside impurity need through a plurality of wall groove one just can follow gas vent one and get into inside the casing, greatly increased outside impurity gets into the inside difficulty of casing, realize the difficult mesh that gets into in the casing of outside impurity.

Preferably, an oil return groove is formed in a side wall of the partition groove adjacent to the first exhaust port, the oil return groove is communicated with the first exhaust port, and the oil return groove is communicated with the connecting groove.

According to the technical scheme, the lubricating oil steam enters the first partition groove communicated with the first exhaust port from the first exhaust port, the lubricating oil steam is collected in the first partition groove and the second partition groove which are close to the first exhaust port, the collected lubricating oil steam generates small part settlement on the inner walls of the first partition groove and the second partition groove, so that liquid lubricating oil is formed, the liquid lubricating oil flows back to the shell through the oil return groove, and the utilization rate of the lubricating oil is improved; and the residual gaseous lubricating oil vapor enters the next separating groove I through the connecting groove and is finally discharged out of the exhaust port II.

Preferably, the connecting groove is provided with a plurality of connecting grooves which are communicated with two adjacent separating grooves II.

Through above-mentioned technical scheme, a plurality of spread grooves are seted up on the apron, and every spread groove with two adjacent two UNICOM in wall groove, when improving the spread groove height, increased the degree of difficulty that outside impurity got into the casing inside.

Preferably, the central axes of a plurality of said connecting slots are non-collinear.

Through above-mentioned technical scheme, the central axis of a plurality of spread grooves is the collineation not for lubricating oil steam increases from gas vent one to the circulation time between the gas vent two, compares directly from the gas vent exhaust lubricating oil steam, the noise that produces when having reduced lubricating oil steam and discharging.

Preferably, a vent plug for blocking the second exhaust port is detachably connected in the second exhaust port.

Through above-mentioned technical scheme, the breather plug that sets up in the gas vent two can block up gas vent two when the reduction gear does not operate, has reduced the possibility that outside impurity got into gas vent two.

Preferably, the cover plate is detachably connected with the rear cover.

Through above-mentioned technical scheme, outside impurity gets into from gas vent two and separates disconnected groove one, and when inconvenient taking out impurity from gas vent two, can dismantle the apron earlier, takes out the impurity of separating in the disconnected groove one again for it is comparatively convenient to clear up impurity.

Preferably, an oil filling port is formed near the first exhaust port, and a sealing plug capable of blocking the oil filling port is arranged in the oil filling port; an oil outlet is formed in the lower end of the front cover, and a plug capable of blocking the oil outlet is arranged in the oil outlet.

By the technical scheme, lubricating oil is injected into the shell from the oil injection port, so that friction generated by the gear set arranged in the shell in the working process is reduced, and after oil injection is finished, the oil injection port is sealed through the sealing plug, so that the sealing property in the shell is ensured; when the lubricating oil is replaced, the lubricating oil after long-term use is discharged from the oil outlet under the action of self weight, and after the lubricating oil is added, the oil outlet is sealed through the plug, so that the sealing property inside the shell is ensured.

Preferably, the inner side of the rear cover is provided with a plurality of partition plates, and the partition plates surround to form a flow channel for guiding lubricating oil.

Through above-mentioned technical scheme, the baffle that the back lid inboard set up encloses to close and forms the runner that supplies the lubricating oil circulation, guarantees that lubricating oil can accurately act on the gear train, produces the lubrication to the gear train promptly, has improved the availability factor of lubricating oil.

Preferably, the edge of the rear cover is provided with a plurality of weight reducing grooves I, the edge of the front cover is provided with a plurality of weight reducing grooves II, and the weight reducing grooves II and the weight reducing grooves I can be enclosed when the front cover is matched with the rear cover.

Through the technical scheme, the weight reduction grooves I and the weight reduction grooves II are formed, raw materials for producing the shell are reduced, and the production cost of the shell is reduced.

Preferably, a plurality of reinforcing ribs are integrally formed on the inner side of the rear cover.

Through above-mentioned technical scheme, the structural strength of this casing has been increased in the setting of strengthening rib, has guaranteed the life of this casing.

Drawings

FIG. 1 is a schematic diagram of an exploded structure of an embodiment;

FIG. 2 is a schematic structural diagram of the rear cover and the inner cavity in the embodiment;

FIG. 3 is a schematic structural view of the inner side of the rear cover in the embodiment;

FIG. 4 is a schematic structural view of the top of the rear cover in the embodiment;

FIG. 5 is a schematic structural view of an upper portion of a cover plate in an embodiment;

FIG. 6 is a schematic structural view of a lower portion of a cover plate in an embodiment;

fig. 7 is a schematic structural diagram of the front cover and the plug in the embodiment.

Reference numerals: 100. a rear cover; 101. a gas collecting tank; 102. a first exhaust port; 103. a first isolating groove; 1031. an oil return groove; 104. an oil filling port; 1041. a sealing plug; 105. a partition plate; 106. a flow channel; 107. a first weight-reducing slot; 108. reinforcing ribs; 200. a front cover; 201. an oil outlet; 2011. a plug; 202. a second weight-reducing groove; 300. an inner cavity; 400. a connecting member; 500. a cover plate; 501. a second isolating groove; 5011. connecting grooves; 502. a second exhaust port; 5021. a vent plug; 600. a gear set.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only 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. Further, the inner side of the rear cover 100 is a side where the gear unit 600 is installed, and the inner side of the front cover 200 is a side where the gear unit 600 is installed.

The present invention will be described in further detail with reference to the accompanying drawings.

A shell of a speed reducer is shown in fig. 1 to 7 and comprises a rear cover 100 and a front cover 200, wherein the front cover 200 is matched with the rear cover 100 to form an inner cavity 300 of the speed reducer, the inner cavity 300 is used for installing a gear set 600 of the speed reducer, the front cover 200 is detachably connected with the rear cover 100 through a connecting piece 400, and the connecting piece 400 can be common bolts or hexagon bolts.

The gas collecting groove 101 is integrally formed at the upper end of the inner side of the rear cover 100, a first exhaust port 102 communicated with the gas collecting groove 101 is formed in the outer side of the gas collecting groove 101, a plurality of first isolating grooves 103 are sequentially formed in the first exhaust port 102, a cover plate 500 capable of covering the first isolating grooves 103 is arranged on the outer side of the first exhaust port 102, the cover plate 500 is detachably connected with the rear cover 100 through screws, a second isolating groove 501 is formed in the end face, facing the first isolating grooves 103, of the cover plate 500, the second isolating groove 501 is identical in structure with the first isolating grooves 103 and is arranged in a one-to-one correspondence mode, a connecting groove 5011 communicated with the second isolating grooves 501 is formed in the cover plate 500, a second exhaust port 502 is formed in the bottom of the second isolating groove 501 far away from the first exhaust port 102, the second exhaust port 502 is communicated with the first exhaust port 102 through the connecting groove 5011, and a vent plug 502.

An oil return groove 1031 is formed in the side wall of the partition groove I103 adjacent to the exhaust port I102, and the oil return groove 1031 is communicated with the exhaust port I102 and the oil return groove 1031.

The connecting grooves 5011 are provided with a plurality of connecting grooves 5011 which are communicated with the two adjacent separating grooves 501. Preferably, the central axes of the plurality of connecting slots 5011 are not collinear.

An oil filling port 104 is formed near the first exhaust port 102, and a sealing plug 1041 capable of blocking the oil filling port 104 is arranged in the oil filling port 104; an oil outlet 201 is formed in the lower end of the front cover 200, and a plug 2011 capable of blocking the oil outlet 201 is arranged in the oil outlet 201.

The inner side of the rear cover 100 is provided with a plurality of partition plates 105, and the partition plates 105 enclose to form a flow passage 106 for guiding lubricating oil. A plurality of ribs 108 are integrally formed on the inner side of the rear cover 100.

The edge of the rear cover 100 is provided with a plurality of first weight-reducing grooves 107, the edge of the front cover 200 is provided with a plurality of second weight-reducing grooves 202, and the second weight-reducing grooves 202 and the first weight-reducing grooves 107 can be enclosed when the front cover 200 is matched with the rear cover 100.

The working principle of the shell of the speed reducer is as follows:

the assembly of this casing: the gear set 600 is arranged on the inner side of the rear cover 100, the inner side of the front cover 200 is attached to the inner side of the rear cover 100, the first lightening slots 107 and the second lightening slots 202 are opposite, and the front cover 200 and the rear cover 100 are fixed through bolts; the oil outlet 201 is sealed by a plug 2011, lubricating oil is injected into the inner cavity 300 of the shell from the oil filling port 104, and the lubricating oil flows onto the gear set 600 from the flow passage 106 to provide lubrication for the gear set 600; the cover plate 500 is fixed above the first exhaust port 102 by screws, and finally the second exhaust port 502 is blocked by the vent plug 5021, and the housing assembly is completed.

After the speed reducer works, the vent plug 5021 is opened, after the speed reducer is used for a long time, the temperature in the shell rises, so that liquid lubricating oil is heated and gasified into a gas state, the density of the gas lubricating oil is reduced, the gas lubricating oil rises into the gas collecting groove 101, then the gas lubricating oil enters the first partition groove 103 and the second partition groove 501 adjacent to the first exhaust port 102 through the first exhaust port 102, lubricating oil steam is collected in the first partition groove 103 adjacent to the first exhaust port 102, part of the lubricating oil steam is deposited into liquid lubricating oil after contacting with the wall of the first partition groove 103 and the wall of the second partition groove 501, the liquid lubricating oil flows back to the interior of the shell from the oil return groove 1031, the rest of the gas lubricating oil enters the next first partition groove 103 and the second partition groove 501 from the connecting groove 5011, and finally the gas lubricating oil steam is discharged out of the shell through the second exhaust port 502, and.

After the external impurities enter the first blocking groove 103 and the second blocking groove 501 from the second exhaust port 502, the connecting groove 5011 is located on the cover plate 500, so that the connecting groove 5011 is located at a higher position, the impurities in the first blocking groove 103 and the second blocking groove 501 are not easy to enter the adjacent first blocking groove 103 and the second blocking groove 501 through the connecting groove 5011, and the purpose that the external impurities are not easy to enter the inside of the shell is achieved.

The impurities entering the first blocking groove 103 from the second exhaust port 502 can be taken out through the second exhaust port 502, or the impurities in the first blocking groove 103 can be cleaned after the cover plate 500 is disassembled.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. The utility model provides a casing of reduction gear, includes back lid (100) and protecgulum (200), protecgulum (200) with back lid (100) cooperate and form inner chamber (300) of reduction gear to can dismantle the connection through connecting piece (400), characterized by: the inner side of the upper end of the rear cover (100) is provided with a gas collecting groove (101), the outer side of the gas collecting groove (101) is provided with a first exhaust port (102) communicated with the gas collecting groove (101), a plurality of first isolating grooves (103) are arranged at the first exhaust port (102) at intervals, a cover plate (500) capable of covering the first isolating grooves (103) is arranged on the outer side of the first exhaust port (102), the end surface of the cover plate (500) facing the first isolating groove (103) is provided with a second isolating groove (501), the second isolating grooves (501) and the first isolating grooves (103) are arranged in a one-to-one correspondence manner, a connecting groove (5011) communicated with the second isolating grooves (501) is formed in the cover plate (500), a second exhaust port (502) is formed at the bottom of the second isolating groove (501) far away from the first exhaust port (102), the second exhaust port (502) is communicated with the first exhaust port (102) through the connecting groove (5011).

2. A decelerator housing as claimed in claim 1 wherein: and an oil return groove (1031) is formed in the side wall of the first partition groove (103) adjacent to the first exhaust port (102), the oil return groove (1031) is communicated with the first exhaust port (102), and the oil return groove (1031) is communicated with the connecting groove (5011).

3. A decelerator housing as claimed in claim 2 wherein: the connecting groove (5011) is provided with a plurality of connecting grooves (5011) which are communicated with the two adjacent separating grooves II (501).

4. A decelerator housing as claimed in claim 3 wherein: the central axes of a plurality of the connecting grooves (5011) are not collinear.

5. A decelerator housing as claimed in claim 4 wherein: and a vent plug (5021) for blocking the second exhaust port (502) is detachably connected in the second exhaust port (502).

6. A decelerator housing as claimed in claim 5 wherein: the cover plate (500) is detachably connected with the rear cover (100).

7. A decelerator housing as claimed in claim 6 wherein: an oil filling port (104) is formed near the first exhaust port (102), and a sealing plug (1041) capable of blocking the oil filling port (104) is arranged in the oil filling port (104); an oil outlet (201) is formed in the lower end of the front cover (200), and a plug (2011) capable of blocking the oil outlet (201) is arranged in the oil outlet (201).

8. A decelerator housing as claimed in claim 7 wherein: the inner side of the rear cover (100) is provided with a plurality of partition plates (105), and the partition plates (105) enclose to form a flow passage (106) for guiding lubricating oil.

9. A decelerator housing as claimed in claim 8 wherein: the edge of the rear cover (100) is provided with a plurality of first weight reducing grooves (107), the edge of the front cover (200) is provided with a plurality of second weight reducing grooves (202), and the second weight reducing grooves (202) and the first weight reducing grooves (107) can be enclosed when the front cover (200) is matched with the rear cover (100).

10. A decelerator housing as claimed in claim 9 wherein: the inner side of the rear cover (100) is integrally formed with a plurality of reinforcing ribs (108).