CN210769851U

CN210769851U - Powder metallurgy formed lubricating type oil-retaining bearing

Info

Publication number: CN210769851U
Application number: CN201921503487.XU
Authority: CN
Inventors: 吴韦
Original assignee: Weilisi Mould Technology Shanghai Co ltd
Current assignee: Weilisi Mould Technology Shanghai Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-06-16
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a fashioned lubricated type oil bearing of powder metallurgy relates to machine parts technical field, including the bearing body, the dead eye has been seted up on the bearing body, the oil pocket has been seted up in the bearing body, set up the oiling mouth with the oil pocket intercommunication on the bearing body outer wall, the bearing body is equipped with seal assembly in oiling mouth department, seal assembly includes closing plate and mounting, the mounting includes the clamping ring of cover on the bearing body, closing plate fixed connection is on the inner wall of clamping ring, the closing plate includes connecting portion and the guide part of an organic whole connection, guide part and oiling mouth adaptation, the oiling mouth is established in the orthographic projection cover of bearing body to connecting portion projection so that the closing plate is connected with oiling mouth sealing joint, the utility model discloses in the oil pocket establish inside the bearing body, reduce with the possibility of part scraping damage, and the setting up of oiling mouth is convenient for to the inside supplementary lubricating oil of oil pocket.

Description

Powder metallurgy formed lubricating type oil-retaining bearing

Technical Field

The utility model relates to a machine parts technical field, more specifically say, it relates to a fashioned lubricated type oiliness bearing of powder metallurgy.

Background

The porous bearing is made of metal powder as main material and is sintered through powder metallurgy process to soak lubricating oil in 10-40 vol% of the sintered material, and has the advantages of reduced friction and easy operation in self-lubricating state.

The current chinese patent that publication number is CN206929214U discloses a self-lubricating oil bearing, which comprises a bearing body, the dead eye has been seted up on the bearing body, the dead eye extends to the lower surface by the bearing body upper surface, the lubrication groove has been seted up on the internal perisporium of dead eye, the lubrication groove is along dead eye internal perisporium spiral distribution, the one end of bearing body is equipped with the flange, the through-hole has been seted up on the flange, the central axis of through-hole and the central axis of dead eye parallel arrangement each other, first annular groove has been seted up to the internal perisporium of through-hole, the second annular groove is seted up to the one end that the dead eye internal perisporium is close to the flange, first annular groove and second annular.

Among the above-mentioned technical scheme, when fluid in the lubrication groove is lubricated on to the bearing body, can also reach first annular groove through second annular groove, lubricate set screw, however, the lubrication groove has been seted up on the bearing body inner wall, make the bearing body have the clearance between the two when installing with other part cooperations, the part produces the scraping in lubrication groove department and bearing body easily at the operation in-process, lead to the part by wearing and tearing, in addition, the bearing body is the oiliness bearing, need regularly supply lubricating oil to the bearing body, consequently, need regularly dismantle the bearing body, thereby lead to increasing dismantlement and installation work.

SUMMERY OF THE UTILITY MODEL

To the easy part of in-service use scrape and need dismantle the bearing body and carry out this problem of lubricating oil addition with the bearing body inner wall, the utility model aims to provide a fashioned lubricated type oiliness bearing of powder metallurgy, the trapped fuel chamber is established inside the bearing body, reduces the possibility of scraping the damage with the part, and the setting up of oiling mouth is convenient for to the inside supplementary lubricating oil of trapped fuel chamber, and concrete scheme is as follows:

the utility model provides a fashioned lubricated type oiliness bearing of powder metallurgy, includes the bearing body, the dead eye has been seted up on the bearing body, the oil storage chamber has been seted up in the bearing body, set up on the bearing body outer wall with the oiling mouth of oil storage chamber intercommunication, the bearing body in oiling mouth department is equipped with seal assembly, seal assembly includes closing plate and mounting, the mounting is established including the cover the chucking ring on the bearing body, closing plate fixed connection is in on the inner wall of chucking ring, the closing plate includes connecting portion and the guide part of an organic whole connection, the guide part with oiling mouth adaptation, connecting portion projection in the orthographic projection cover of bearing body is established the oiling mouth so that the closing plate with oiling mouth sealing joint.

Through the technical scheme, the bearing body is filled with lubricating oil in the oil storage cavity through the oil filling port, the bearing body is an oil-containing bearing, the lubricating oil is scattered from a gap on the bearing body to lubricate a part due to heat generated in a working state, and the oil storage cavity is arranged in the bearing body, so that the inner wall of the bearing body is not required to be grooved, the contact surface between the bearing body and a part is smooth, and the possibility of scraping the part and the inner wall of the bearing body during operation is reduced; in addition, the clamping ring can be detached from the bearing body, so that the sealing plate is driven to be separated from the oil injection port, the lubricating oil can be directly supplemented to the oil storage cavity by an operator conveniently, and the lubricating oil is not required to be supplemented after the bearing body is detached.

Furthermore, the expansion opening has been seted up along its axial to the clamping ring, the mounting still includes locking bolt, lock nut and two rigging boards, two rigging board respectively the rigid coupling in the expansion opening both sides the clamping ring circles, two are worn to establish by the locking bolt screw thread behind the rigging board by lock nut locking.

Through above-mentioned technical scheme, the cooperation of locking bolt, lock nut and rigging board is further tightly established the chucking circle on the outer wall of bearing body, and then improves the leakproofness between closing plate and the oiling mouth, reduces the possibility that lubricating oil spills.

Furthermore, the oil storage cavity comprises a sealing ring and an oil storage hole formed along the circumferential direction of the bearing body, one end of the oil storage hole extends out of the surface of the bearing body to form an opening, and the sealing ring is fixedly arranged at the opening and forms the oil storage cavity with the oil storage hole.

Through above-mentioned technical scheme, conveniently make earlier on being the solid bearing body and deposit the oilhole, rethread installation sealing washer forms and deposits the oil pocket, and the sealing washer can be dismantled and get off, conveniently clears up and deposit the oilhole.

Further, the oil storage hole comprises an upper oil cavity, a lower oil cavity and a communication hole, and the length of the communication hole in the axial direction of the bearing body is smaller than the length of the upper oil cavity and the length of the lower oil cavity in the axial direction of the bearing body.

Through above-mentioned technical scheme, will deposit the oil cavity and divide into two less oil pockets roughly, because the bearing body during operation is in the rotation state, lubricating oil rotates along with the bearing body easily under the action of gravity, but the setting up of intercommunicating pore makes lubricating oil evenly distributed in last oil pocket and lower oil pocket, and then makes lubricating oil evenly provide the lubrication action to the part.

Further, the length of the communication hole in the axial direction of the bearing body is 1/5 times the axial length of the bearing body.

Through above-mentioned technical scheme, guarantee the intercommunication effect of intercommunication pore pair upper oil pocket and lower oil pocket, and avoid the intercommunicating pore too big, lead to lubricating oil from the upper oil pocket in the excessive speed flows into the lower oil pocket.

Furthermore, the sealing ring is fixedly connected with two limiting pieces, the two limiting pieces are symmetrically arranged along the radial direction of the sealing ring, and the limiting pieces are positioned in the oil storage hole and form the communicating hole with the bearing body.

Through the technical scheme, the limiting pieces have the effect of limiting the flow speed of the lubricating oil, so that the lubricating oil is divided into the two oil cavities, and the operation cost for manufacturing the communicating hole is reduced.

Furthermore, the limiting sheet and the sealing ring are integrally connected.

Through above-mentioned technical scheme, conveniently install spacing piece in the oil deposit hole for spacing piece can be stably in the oil deposit hole.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) the oil storage cavity is arranged in the bearing body, so that the surface of the bearing body, which is in contact with the part, is smooth, the possibility of scraping the part and the inner wall of the bearing body during operation is reduced, lubricating oil can be supplemented into the oil storage cavity through the oil filling port, the lubricating oil is not required to be supplemented after the bearing body is disassembled, and the operation cost is reduced;

(2) through setting up spacing piece, spacing piece is in the oil storage hole and forms two intercommunicating pores with the bearing body to divide into oil storage cavity and upper oil pocket and lower oil pocket, and then make lubricating oil evenly provide the lubrication action to the part.

Drawings

Fig. 1 is an overall schematic view of an embodiment of the present invention;

FIG. 2 is a schematic view showing the connection relationship between the sealing ring and the spacing piece;

FIG. 3 is a dotted line representation showing the structure of the oil reservoir according to the present invention;

fig. 4 is a schematic cross-sectional view taken along line a-a in fig. 3.

Reference numerals: 1. a bearing body; 101. a bearing bore; 102. an oil filling port; 2. a seal ring; 21. a limiting sheet; 3. an oil storage hole; 31. an upper oil chamber; 32. a lower oil chamber; 33. a communicating hole; 4. a sealing plate; 41. a connecting portion; 42. a guide portion; 5. a fixing member; 51. a clamping ring; 511. Expanding the opening; 52. locking the bolt; 53. locking the nut; 54. and (7) laminating the plates.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1, a lubricated type oil-retaining bearing of powder metallurgy shaping, including bearing body 1, bearing hole 101 has been seted up on bearing body 1 for be connected with other parts, have seted up in bearing body 1 and deposit the oil pocket, set up on the bearing body 1 outer wall with deposit the oiling mouth 102 of oil pocket intercommunication, bearing body 1 is equipped with seal assembly in oiling mouth 102 department, through oiling mouth 102 to deposit supplementary lubricating oil in the oil pocket, seal assembly realizes the sealed to oiling mouth 102.

Because the bearing body 1 is the existing oil-retaining bearing, the oil-retaining bearing is a sintered body manufactured by a powder metallurgy method, because of the porosity of the sintered body, the bearing body 1 contains uniform micro-gaps, the bearing body 1 is soaked in lubricating oil during use, the heat generated by the bearing body 1 in a working state promotes the micro-gaps to be enlarged, the lubricating oil overflows from the micro-gaps, and the friction between the bearing body 1 and parts is reduced.

Combine fig. 2 and fig. 3, it is concrete, the oil storage chamber includes sealing washer 2 and oil storage hole 3, oil storage hole 3 is seted up along 1 circumference of bearing body, encircle to set up promptly around the axis of bearing body 1, the surface that 3 one end of oil storage hole extended bearing body 1 forms the opening, and the other end of oil storage hole 3 does not run through bearing body 1, sealing washer 2 bonds at the opening part through surface coating glue for sealing washer 2 is fixed on bearing body 1, sealing washer 2 is sealed with oil storage hole 3 formation oil storage chamber with the opening part of oil storage hole 3.

The oil reservoir hole 3 includes an upper oil chamber 31, a lower oil chamber 32, and a communication hole 33, and the length of the communication hole 33 in the axial direction of the bearing body 1 is smaller than the lengths of the upper oil chamber 31 and the lower oil chamber 32 in the axial direction of the bearing body 1. The seal ring 2 is integrally connected with two limiting pieces 21, the two limiting pieces 21 are symmetrically arranged along the radial direction of the seal ring 2, the limiting pieces 21 are positioned in the oil storage holes 3 to form communicating holes 33 with the bearing body 1, the length of the communicating holes 33 along the axial direction of the bearing body 1 is 1/5 of the axial length of the bearing body 1, and the communicating holes 33 are positioned at the middle position close to the axial direction of the bearing body 1. When the lubricating oil is gradually reduced, the flow rate of the lubricating oil is reduced due to the arrangement of the communication hole 33, and the lubricating oil is stored in the upper oil chamber 31 and the lower oil chamber 32 in a partitioned manner during the operation of the bearing body 1, so that the lubricating oil is uniformly supplied to the bearing body 1.

Referring to fig. 1 and 4, in particular, the sealing assembly includes a sealing plate 4 and a fixing member 5, the fixing member 5 includes a clamping ring 51 sleeved on the bearing body 1, and the fixing member 5 further includes a locking bolt 52, a locking nut 53 and two attaching plates 54. The clamping ring 51 is made of elastic steel, the clamping ring 51 is provided with an expanding opening 511 along the axial direction, the sealing plate 4 is fixedly connected on the inner wall of the clamping ring 51, the two attaching plates 54 are respectively and fixedly connected on the clamping ring 51 at two sides of the expanding opening 511, the two attaching plates are attached to each other, and the locking bolt 52 is locked by the locking nut 53 after penetrating the two attaching plates 54 through the thread. When the lubricating oil needs to be replenished, the two attachment plates 54 are separated and removed from the outer wall of the bearing body 1.

As shown in fig. 4, the sealing plate 4 includes a connecting portion 41 and a guide portion 42 which are integrally connected, the connecting portion 41 is adhered to an inner wall of the clamping ring 51 by glue, and the sealing plate 4 is disposed away from the enlarged opening 511. The guide portion 42 is matched with the oil filling opening 102, the connecting portion 41 projects on the orthographic projection of the bearing body 1 to cover the oil filling opening 102, the guide portion 42 is filled at the oil filling opening 102, and the connecting portion 41 covers the oil filling opening 102 so that the sealing plate 4 is in sealing fit connection with the oil filling opening 102.

The sealing plate 4, the integrally arranged limiting piece 21 and the sealing ring 2 are made of elastic fluororubber, and the texture is soft.

The working process of the utility model is as follows:

when the bearing body 1 needs to be replenished with lubricating oil, the locking bolt 52 and the locking nut 53 are separated, the clamping ring 51 is taken down, the sealing plate 4 is further taken down from the oil filling port 102, an operator supplements the lubricating oil to the oil storage cavity through the oil filling port 102, then the clamping ring 51 is sleeved on the outer wall of the bearing body 1 again, the locking bolt 52 and the locking nut 53 are fastened, and the sealing of the sealing plate 4 to the oil filling port 102 is realized.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The lubricating type oil-retaining bearing formed by powder metallurgy comprises a bearing body (1), wherein a bearing hole (101) is formed in the bearing body (1), and is characterized in that an oil storage cavity is formed in the bearing body (1), an oil filling port (102) communicated with the oil storage cavity is formed in the outer wall of the bearing body (1), a sealing assembly is arranged at the oil filling port (102) of the bearing body (1) and comprises a sealing plate (4) and a fixing part (5), the fixing part (5) comprises a clamping ring (51) sleeved on the bearing body (1), the sealing plate (4) is fixedly connected onto the inner wall of the clamping ring (51), the sealing plate (4) comprises a connecting part (41) and a guide part (42) which are integrally connected, and the guide part (42) is matched with the oil filling port (102), the oil filling opening (102) is covered by the orthographic projection of the connecting part (41) on the bearing body (1) so that the sealing plate (4) is in sealing fit connection with the oil filling opening (102).

2. The powder metallurgy formed lubrication type oil-retaining bearing according to claim 1, wherein the clamping ring (51) is provided with an enlarged opening (511) along an axial direction thereof, the fixing member (5) further comprises a locking bolt (52), a locking nut (53) and two abutting plates (54), the two abutting plates (54) are respectively and fixedly connected to the clamping ring (51) at two sides of the enlarged opening (511), and the locking bolt (52) is locked by the locking nut (53) after being threaded through the two abutting plates (54).

3. The powder metallurgy formed lubricating type oil-retaining bearing according to claim 1, wherein the oil storage cavity comprises a sealing ring (2) and an oil storage hole (3) formed along the circumferential direction of the bearing body (1), one end of the oil storage hole (3) extends out of the surface of the bearing body (1) to form an opening, and the sealing ring (2) is fixedly arranged at the opening to form the oil storage cavity together with the oil storage hole (3).

4. The powder metallurgy formed lubricated type oil-impregnated bearing according to claim 3, wherein the oil reservoir (3) comprises an upper oil chamber (31), a lower oil chamber (32), and a communication hole (33), and a length of the communication hole (33) in an axial direction of the bearing body (1) is smaller than a length of the upper oil chamber (31), the lower oil chamber (32) in the axial direction of the bearing body (1).

5. The lubricated type oil-impregnated bearing formed by powder metallurgy according to claim 4, wherein the length of the communication hole (33) in the axial direction of the bearing body (1) is 1/5 of the axial length of the bearing body (1).

6. The lubricated type oil-retaining bearing formed by powder metallurgy according to claim 4, wherein the sealing ring (2) is fixedly connected with two limiting pieces (21), the two limiting pieces (21) are symmetrically arranged along the radial direction of the sealing ring (2), and the limiting pieces (21) are positioned in the oil storage hole (3) to form the communication hole (33) with the bearing body (1).

7. The lubricated type oil-retaining bearing formed by powder metallurgy according to claim 6, wherein the limiting piece (21) is integrally connected with the seal ring (2).