CN117287499A

CN117287499A - Net type filter adopting two-end positioning structure and installation method thereof

Info

Publication number: CN117287499A
Application number: CN202311354485.XA
Authority: CN
Inventors: 拜鼎邦; 马旭耀; 刘义; 张晨光; 冯浩成; 王凯峰
Original assignee: Shaanxi Fast Auto Drive Group Co Ltd
Current assignee: Shaanxi Fast Auto Drive Group Co Ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2023-12-26

Abstract

The utility model discloses a net type filter adopting a two-end positioning structure and an installation method thereof, and belongs to the technical field of oil filtration of a speed changer. The oil pan comprises a front connecting cylinder fixed on the side wall of an oil pan, wherein the front connecting cylinder is fixedly connected with a sleeve, one end of a filter screen is sleeved in the sleeve, the other end of the filter screen is fixedly connected with a base, a base boss is arranged on an inward protruding part of the base facing the inside of the filter screen, and a base connecting hole is formed in the base boss; a magnet is sleeved in the filter screen, one end of the magnet is fixed on the front connecting cylinder, and the other end of the magnet is fixed on the base; an oil pan boss is arranged on the bottom surface of the oil pan, an oil pan connecting hole is arranged on the oil pan boss, and the base is fixed on the oil pan boss through a connecting piece. The utility model enables the net filter to be arranged close to the oil pan, does not influence the normal oil absorption function when the liquid level is low, has low requirements on the depth of the oil pan, saves the longitudinal space of the whole tank, and is beneficial to the space arrangement during the whole tank loading.

Description

Net type filter adopting two-end positioning structure and installation method thereof

Technical Field

The utility model belongs to the technical field of oil filtration of a transmission, and relates to a mesh filter adopting a two-end positioning structure and an installation method thereof.

Background

Mesh filters are widely used in automatic transmission transmissions. The oil filter is generally arranged at the oil suction end of the hydraulic pump, and is used for filtering oil and liquid impurities in the automatic transmission and keeping the automatic transmission to work normally. The existing net type filter can be divided into a pipe type filter and a flange type filter according to the external dimension.

In an automatic transmission, a mesh filter is generally disposed at an oil pan. For example, the Chinese patent application No. 201120127771.9 discloses a 50 loader gearbox oil liquid filtering device, wherein the filtering device (filter) is only sleeved on a flange boss on the side surface of a gearbox body at one end and then fixed by a bolt, and the other end is in a suspended state, and the installation structure is fixed at one end and has insufficient positioning reliability; meanwhile, as only one end is fixed, the length and the diameter of the filtering device (filter) cannot be too large, otherwise, the filtering device cannot be supported, and therefore the defects of insufficient filtering area and low oil-passing capacity of the filtering device exist; in addition, the locating structure with one side fixed on the side surface of the box body is adopted, so that the installation height of the filtering device is higher, and the oil absorption is difficult when the liquid level of the oil liquid is lower. The Chinese patent application No. 201720268880.X discloses an external double-filter-screen type oil filter for 13T new energy source main reduction, which is an external single-side fixed structure and has insufficient stability, so that a magnet can be arranged at one end of a filter screen, but cannot be sleeved in the filter screen, and the filtering capability of the filter screen on magnetic substances such as iron scraps in oil liquid is poor. In summary, the existing mesh filter mostly adopts a fixing mode that a single side is fixed in a transmission case or the filter is externally arranged, and the installation position is relatively high, so that the following disadvantages exist in the common mesh filter:

1. the filtering area is insufficient, and the oil-passing capability is not strong;

2. one end is fixed, and the positioning reliability is insufficient;

3. when the liquid level of the oil is low, the oil is difficult to absorb;

4. the filtering capability of magnetic substances such as iron scraps in oil liquid is poor.

Disclosure of Invention

The utility model aims to solve the technical problems that in the prior art, a mesh filter is mostly fixed in a gearbox body by a fixing mode that a single side is fixed or the filter is externally arranged, and the installation position is high, and provides a mesh filter adopting a two-end positioning structure and an installation method thereof.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

in a first aspect, the utility model provides a mesh filter adopting a two-end positioning structure, which comprises a front connecting cylinder fixed on the side wall of an oil pan, wherein the front connecting cylinder is fixedly connected with a sleeve, one end of a filter screen is sleeved in the sleeve, the other end of the filter screen is fixedly connected with a base, a base boss is arranged at an inward convex part of the base facing the inside of the filter screen, and a base connecting hole is formed in the base boss; a magnet is sleeved in the filter screen, one end of the magnet is fixed on the front connecting cylinder, and the other end of the magnet is fixed on the base; an oil pan boss is arranged on the bottom surface of the oil pan, and an oil pan connecting hole is formed in the oil pan boss; the base connecting hole is coaxial with the oil pan connecting hole, and the base is fixed on the oil pan boss through the connecting piece.

The utility model is further improved in that:

the magnet is formed by bonding a plurality of magnet sections.

The magnet section consists of a plurality of magnet strips which are uniformly distributed on the circumference.

A cover cylinder is fixedly connected to the side wall of the oil pan; the cover cylinder is connected with a front connecting cylinder; a sealing device is arranged on the matching surface of the front connecting cylinder and the cover cylinder; an oil passing groove is formed in the side wall of the oil pan, and a cover plate is arranged at the exposed part of the top of the oil passing groove; the cover cylinder is provided with a plurality of oil passing holes at positions corresponding to the oil passing grooves.

Sealing devices are arranged on the contact surfaces of the wall surfaces of the cover cylinder and the oil pan.

The front connecting cylinder and the cover cylinder are fixed through bonding or welding.

The cover cylinder is an aluminum casting, and the surface on which the sealing device is arranged is a machining surface; the oil pan boss is a casting, and two end faces provided with oil pan connecting holes are machined surfaces.

A spacing ring is arranged between the base boss and the oil pan boss; the spacer ring is axially provided with a through hole.

The outer ring of the spacing ring is provided with two parallel end faces; the spacer ring is made of steel.

In a second aspect, the present utility model provides a method for installing the mesh filter using a two-end positioning structure, including the steps of:

step one, mounting a sealing device on a cover cylinder, and then assembling the cover cylinder on an oil pan;

step two, the sealing device is arranged on the front connecting cylinder, and the front connecting cylinder is arranged in the cover cylinder;

step three, installing a spacer ring, and fixing the base on the oil pan by sequentially penetrating the oil pan connecting hole, the spacer ring and the base connecting hole by the connecting piece;

and step four, installing the cover plate above the oil passing groove of the oil pan.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model discloses a net type filter adopting a two-end positioning structure, wherein the front end of the net type filter is fixed on a cover cylinder through a front connecting cylinder, and the rear end of the net type filter is fixed on an oil pan boss through a connecting piece, so that the two-end positioning of the net type filter is realized, and the positioning reliability is good; based on the reliability of the positioning at two ends, the filter screen and the magnet of the net type filter can be designed to be longer than that of a conventional net type filter, so that the filtering area is increased, the oil passing capability is enhanced, and the adsorption force on magnetic substances such as iron scraps in oil is also enhanced. Moreover, by adopting the positioning mode in the utility model, the installation height of the net filter in the oil pan can be reduced, the net filter is arranged close to the oil pan, and oil can be absorbed smoothly when the oil level in the oil pan is too low. And the front end of the filter screen is provided with the sleeve, when the liquid level is lower and the gearbox is inclined, the sleeve can extend into the liquid level, and the normal oil absorption function is not affected.

Further, the magnet is formed by bonding a plurality of magnet sections, the conventional filter magnet is integrated, the size of the filter magnet is small for preventing brittle failure, and the filtering area is small. The magnets are installed in sections, so that the magnets are prevented from being excessively long and brittle failure. The length of the net type filter is ensured, the area of the filter screen is large, and the oil-passing capability is strong.

Further, the oil pan is provided with a cover cylinder at the oil groove, a sealing device is arranged on the contact surface of the cover cylinder and the oil pan, and the assembly position of the front connecting cylinder and the cover cylinder is also provided with the sealing device, so that the oil pan is of a double sealing structure and the sealing performance is enhanced.

Further, the outer ring of the spacing ring is provided with two parallel end faces, so that torque is convenient to use.

The utility model discloses a method for installing a net filter with a two-end positioning structure, which enables the net filter to be arranged close to an oil pan, does not influence the normal oil absorption function when the liquid level is low, has low requirements on the depth of the oil pan, saves the longitudinal space of the whole tank, and is beneficial to the space arrangement during the loading of the whole tank.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the installation structure of a mesh filter according to the present utility model;

FIG. 2 is a schematic cross-sectional view of the installation structure of the mesh filter of the present utility model;

FIG. 3 is a schematic diagram of a mesh filter according to the present utility model;

FIG. 4 is a perspective view of a spacer ring in a mesh filter according to the present utility model;

fig. 5 is a perspective view of an oil pan in the present utility model;

FIG. 6 is a perspective view of a cap cartridge of the present utility model;

fig. 7 is a perspective view of a gasket according to the present utility model.

Wherein: 1-mesh filter; 2-cover plate; 3-an oil pan boss; 4-an oil pan; 5-spacer rings; 6, covering the cylinder; 7-spacer bolts; 8-sealing gasket; 9-cover plate bolts; 10-a cover cylinder bolt; 11-a first sealing ring; 12-a second sealing ring; 13-a third sealing ring; 14-a front connecting cylinder; 15-sleeve; 16-a filter screen; 17-a base; 18-a base boss; 19-a magnet; 20-passing through an oil groove; 21-oil passing hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model is described in further detail below with reference to the attached drawing figures:

referring to fig. 1, 2 and 3, the embodiment of the utility model discloses a mesh filter adopting a two-end positioning structure, wherein the mesh filter 1 comprises a front connecting cylinder 14, a third sealing ring 13, a sleeve 15, a filter screen 16, a magnet 19, a base 17 and a base boss 18; the matching parts of the mesh filter 1 comprise a cover cylinder 6, a second sealing ring 12, a first sealing ring 11, a sealing gasket 8, an oil pan 4, a spacing ring 5, a cover plate 2, a spacing ring bolt 7, a cover plate bolt 9 and a cover cylinder bolt 10.

Referring to fig. 5, an oil passing groove 20 is arranged on the side wall of the oil pan 4, and the exposed part of the top of the oil passing groove is fixedly connected with a cover plate 2 through a cover plate bolt 9; the oil passing groove 20 is used for fixedly connecting the cover cylinder 6 on the oil pan 4 through the cover cylinder bolt 10, and two oil passing holes 21 are formed in the cover cylinder 6 at positions corresponding to the oil passing groove. The sealing gasket 8 is provided at the contact surface between the cover tube 6 and the outer wall surface of the oil pan 4, and as shown in fig. 7, the first sealing ring 11 and the second sealing ring 12 are provided at the contact surface between the cover tube 6 and the wall surface of the oil passing groove 20, respectively.

Referring to fig. 2, the cover cylinder 6 is connected to the front connecting cylinder 14 by bonding or welding; a third sealing ring 13 is arranged on the matching surface of the front connecting cylinder 14 and the cover cylinder 6; the front connecting cylinder 14 is made of aluminum alloy or steel, and the material is not particularly required. The front connecting cylinder 14 and the sleeve 15 are bonded or welded, so that the front connecting cylinder is not separated under 20N pulling force. The front end of the net filter is fixed on the cover cylinder through the front connecting cylinder, the rear end of the net filter is fixed on the oil pan boss through the connecting piece, so that the positioning of the two ends of the net filter is realized, and the positioning reliability is good; based on the reliability of the positioning at two ends, the filter screen and the magnet of the net type filter can be designed to be longer than that of a conventional net type filter, so that the filtering area is increased, the oil passing capability is enhanced, and the adsorption force on magnetic substances such as iron scraps in oil is also enhanced. Moreover, by adopting the positioning mode in the utility model, the installation height of the net filter in the oil pan can be reduced, the net filter is arranged close to the oil pan, and oil can be absorbed smoothly when the oil level in the oil pan is too low. And the front end of the filter screen is provided with the sleeve, when the liquid level is lower and the gearbox is inclined, the sleeve can extend into the liquid level, and the normal oil absorption function is not affected.

Referring to fig. 3, one end of a filter screen 16 is sleeved in a sleeve 15, the other end of the filter screen is fixedly connected with a base 17, a base boss 18 is arranged on an inward convex part of the base 17 facing the inside of the filter screen 16, a base connecting hole with threads is formed in the base boss 18, and the base boss 18 is welded or machined; the filter screen 16 is internally sleeved with a magnet 19, the magnet 19 is formed by bonding a plurality of magnet sections consisting of four magnet strips uniformly distributed on the circumference, one end of the magnet 19 is fixed on the front connecting cylinder 14, and the other end is fixed on the base 17; the oil pan is provided with a cover cylinder, a sealing device is arranged on the contact surface of the cover cylinder and the oil pan, and the assembly position of the front connecting cylinder and the cover cylinder is also provided with a sealing device, so that the oil pan is of a double sealing structure and the sealing performance is enhanced. An oil pan boss 3 is arranged on the bottom surface of the oil pan 4, and an oil pan connecting hole is arranged on the oil pan boss 3; a spacing ring 5 is arranged between the base boss 18 and the oil pan boss 3; as shown in fig. 4, the spacer ring 5 is axially provided with a threaded hole, and the outer ring has two parallel end surfaces, so that torque is convenient to apply. The spacer ring material is common steel. The base connecting hole and the oil pan connecting hole are coaxial, and the connecting piece sequentially passes through the oil pan connecting hole, the spacing ring 5 and the base connecting hole to fix the base 17 on the oil pan 4.

Referring to fig. 6, the cover cylinder 6 is an aluminum casting, and the surface on which the sealing device is arranged is a machined surface; the oil pan boss 3 is a casting, and two end surfaces provided with oil pan connecting holes are machined surfaces.

The embodiment of the utility model discloses a method for installing a mesh filter adopting a two-end positioning structure, which is used for the installation method of the mesh filter adopting the two-end positioning structure and is characterized by comprising the following steps:

step one, mounting a sealing device on the cover cylinder 6, and then assembling the cover cylinder 6 on the oil pan 4;

step two, the sealing device is arranged on the front connecting cylinder 14, and the front connecting cylinder 14 is arranged in the cover cylinder 6;

step three, installing a spacing ring 5, and fixing a base 17 on the oil pan 4 by sequentially penetrating the oil pan connecting hole, the spacing ring 5 and the base connecting hole by connecting pieces;

and step four, installing the cover plate 2 above the oil passing groove of the oil pan.

The working process of the utility model is as follows:

the oil is filtered from the oil pan 4 through the filter screen 16 and enters the mesh filter 1, iron impurities are adsorbed by the magnet 19, then enter the cover cylinder 6 from the sleeve 15 and the front connecting cylinder 14 in sequence, then enter the oil passing groove 20 on the oil pan 4 through the two oil passing holes 21 on the cover cylinder 6, and then enter the gearbox system through the oil passing groove 20. Wherein the third sealing ring 13 and the second sealing ring 12 separate the oil before filtering and the oil after filtering, and the first sealing ring 11 and the sealing gasket 8 prevent the oil from leaking out of the shell.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The net type filter adopting the two-end positioning structure is characterized by comprising a front connecting cylinder (14) fixed on the side wall of an oil pan (4), wherein the front connecting cylinder is fixedly connected with a sleeve (15), one end of a filter screen (16) is sleeved in the sleeve (15), the other end of the filter screen is fixedly connected with a base (17), a base boss (18) is arranged at the inner convex part of the base (17) facing the inside of the filter screen (16), and a base connecting hole is formed in the base boss (18); a magnet (19) is sleeved in the filter screen (16), one end of the magnet (19) is fixed on the front connecting cylinder (14), and the other end of the magnet is fixed on the base (17); an oil pan boss (3) is arranged on the bottom surface of the oil pan (4), and an oil pan connecting hole is formed in the oil pan boss (3); the base connecting hole is coaxial with the oil pan connecting hole, and the base (17) is fixed on the oil pan boss through the connecting piece.

2. The mesh filter with two-end positioning structure according to claim 1, wherein the magnet (19) is formed by bonding a plurality of magnet segments.

3. The mesh filter of claim 2, wherein the magnet segments are comprised of a plurality of magnet bars uniformly distributed around the circumference.

4. The mesh filter adopting the two-end positioning structure according to claim 1, wherein a cover cylinder (6) is fixedly connected to the side wall of the oil pan (4); the cover cylinder (6) is connected with a front connecting cylinder (14); a sealing device is arranged on the matching surface of the front connecting cylinder (14) and the cover cylinder (6); an oil passing groove (20) is formed in the side wall of the oil pan (4), and a cover plate (2) is arranged at the exposed part of the top of the oil passing groove; the cover cylinder (6) is provided with a plurality of oil passing holes (21) at positions corresponding to the oil passing grooves.

5. The mesh filter adopting the two-end positioning structure according to claim 4, wherein sealing devices are arranged on the contact surfaces of the cover cylinder (6) and the wall surface of the oil pan (4).

6. The mesh filter employing a two-end positioning structure according to claim 4, wherein the front connecting cylinder (14) and the cover cylinder (6) are fixed by bonding or welding.

7. The mesh filter with two-end positioning structure according to claim 4, characterized in that the cover cylinder (6) is an aluminum casting, and the face on which the sealing means are provided is a machined face; the oil pan boss (3) is a casting, and two end faces provided with oil pan connecting holes are machined surfaces.

8. The mesh filter adopting the two-end positioning structure according to any one of claims 5 to 7, wherein a spacer ring (5) is arranged between the base boss (18) and the oil pan boss (3); the spacing ring (5) is axially provided with a through hole.

9. The mesh filter adopting the two-end positioning structure according to claim 8, wherein the outer ring of the spacer ring (5) is provided with two parallel end surfaces; the spacer ring (5) is made of steel.

10. A method for installing a mesh filter employing a both end positioning structure as claimed in claim 9, comprising the steps of:

step one, a sealing device is arranged on a cover cylinder (6), and then the cover cylinder (6) is assembled on an oil pan (4);

step two, the sealing device is arranged on the front connecting cylinder (14), and the front connecting cylinder (14) is arranged in the cover cylinder (6);

step three, installing a spacing ring (5), and fixing a base (17) on the oil pan (4) by sequentially penetrating through the oil pan connecting hole, the spacing ring (5) and the base connecting hole;

and step four, installing the cover plate (2) above the oil passing groove of the oil pan.