CN210344222U

CN210344222U - Transmission housing precast oil pipe structure

Info

Publication number: CN210344222U
Application number: CN201921176980.5U
Authority: CN
Inventors: 汪常洋; 张; 姜志明; 吴晓冬; 刘晓军
Original assignee: Shanghai Automobile Gear Works
Current assignee: Shanghai Automobile Gear Works
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-17
Anticipated expiration: 2029-07-25

Abstract

A transmission housing pre-cast tubing structure comprising: main casing body with set up oil pipe, movable mould, circulation mold insert, mechanical pump on main casing body, be used for filtering impurity's filter press lid, wherein: the two ends of the oil pipe are respectively connected with the mechanical pump and the filter press cover, and the circulating insert is connected with the oil pipe and arranged in the movable die. The two sides of the oil pipe are provided with a plug and a positioning pin for plugging, the mechanical pump is provided with a connecting port for connecting with the oil pipe, and the filter press cover is provided with a cover cavity for connecting with the oil pipe. The utility model discloses a set up end cap and locating pin on oil pipe, get through the oil transportation passageway between mechanical pump to the filter press lid through die-casting and machine tooling mode, the gas shrinkage cavity risk that effectual reduction casing die-casting produced avoids unable machine tooling at less spatial arrangement oil duct. The oil pipe is a hollow steel pipe, independent processing is not needed, the machining difficulty of the shell is reduced, large oil pressure impact can be resisted, and the sealing performance is reliable.

Description

Transmission housing precast oil pipe structure

Technical Field

The utility model relates to a technique in automotive transmission field specifically is a derailleur housing precast oil pipe structure.

Background

The speed changer carries out gear change according to signals, a mechanical pump of the speed changer is connected to the actuating piston through an oil duct on the shell, and an oil duct passage is built in a pipeline in the speed changing box, so that the cost of new pipeline parts and a certain arrangement space need to be increased, and the difficulty is increased for the design requirement of the shell; in addition, part of the conveying oil duct is machined by a cutter, the oil duct is large in depth, complex in angle and space structure, expensive in maintenance cost and low in blank qualification rate, a plug structure hole needs to be machined, a gas shrinkage hole is easy to exist, the oil leakage risk occurs, an execution piston cannot be pushed when the oil pressure does not meet the set requirement, the gear shifting effect is influenced, the operation experience of a driver is influenced slightly, and personal accidents occur when the gear shifting fails; due to arrangement, the oil passage cannot be realized by machining, the oil passage between two points needs to be opened by an indirect machining mode, and the operation is more complicated.

The existing solution is to bend the oil way through a pre-cast part of the shell, but the oil way is open, a cover plate needs to be added for sealing to form a sealed oil way, only small oil pressure impact can be resisted, parts are added, and meanwhile reliability of sealing performance is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses complicated to prior art structure, casing leakproofness is not enough, the shrinkage cavity appears easily, the oil pressure probably can not reach the settlement standard, the defect of efficiency of shifting is influenced, a derailleur casing precast oil pipe structure is proposed, through set up end cap and locating pin on oil pipe, get through the oil transportation passageway between mechanical pump to the filter press lid through die-casting and machining mode, the shrinkage cavity risk that effectual reduction casing die-casting produced, at less spatial arrangement oil duct, avoid unable machining.

The utility model discloses a realize through following technical scheme:

the utility model discloses a: main casing body with set up oil pipe, movable mould, circulation mold insert, mechanical pump on main casing body, be used for filtering impurity's filter press lid, wherein: the two ends of the oil pipe are respectively connected with the mechanical pump and the filter press cover, and the circulating insert is connected with the oil pipe and arranged in the movable die.

The oil pipe is a hollow steel pipe, independent processing is not needed, and the oil circuit state after the main shell is processed is a sealed oil circuit.

And plugs for plugging are arranged on two sides of the oil pipe.

The oil pipe on be equipped with the locating pin, wherein: the positioning pin is in interference fit with the circulating insert.

And a connector for connecting the mechanical pump with an oil pipe is arranged on the mechanical pump.

The filter press cover is provided with a cover cavity used for being connected with an oil pipe.

Technical effects

Compared with the prior art, the utility model discloses a set up end cap and locating pin on oil pipe, get through the oil transportation passageway between mechanical pump to the filter press lid through die-casting and machining mode, the gas shrinkage cavity risk that effectual reduction casing die-casting produced avoids unable machining at less spatial arrangement oil duct. Because the oil circuit is not directly pre-cast by aluminum liquid, the arrangement of the oil circuit is not required to be considered when designing a die, and the machining of the sealing cover plate and the machining of the matching surface of the shell and the sealing cover are not required to be considered, so that the machining difficulty of the shell is reduced. The utility model discloses only need process oil pipe both ends, do not need extra any processing, die design is simple, because oil pipe itself is the oil circuit, shape and length can set up wantonly as required, do not need extra sealed means, can resist great oil pressure and strike, sealing performance is reliable.

Drawings

FIG. 1 is a schematic view of the structure of the oil pipe of the present invention;

wherein: a is a structural schematic diagram of an oil pipe, and b is a side sectional view;

FIG. 2 is a schematic view of the present invention in which two ends of an oil pipe are respectively connected with a mechanical pump and a filter press cover;

wherein: a is a front view, and b is a rear view;

FIG. 3 is a schematic view of the oil pipe of the present invention being pre-cast into the main housing;

wherein: a is a schematic diagram of a precast structure, and B is a sectional view B-B;

FIG. 4 is a schematic view of the internal structure of the main housing after being machined by the machine of the present invention;

fig. 5 is a schematic view of the interference fit structure of the positioning pin and the circulating insert of the present invention;

wherein: a is a structural schematic diagram, and b is a sectional view A-A;

FIG. 6 is a schematic diagram of the arrangement of the circulating insert in the movable mold according to the present invention;

in the figure: the filter press comprises a main shell 1, an oil pipe 2, a positioning pin 3, a plug 4, a connecting port 5, a cover cavity 6, a circulating insert 7, a movable mold 8, a mechanical pump 9, a filter press cover 10 and a clamping groove 11.

Detailed Description

As shown in fig. 1, a transmission case precast tube structure according to the present embodiment includes: main casing 1 with set up oil pipe 2, movable mould 8, circulation mold insert 7 on main casing 1, be used for the mechanical pump 9 of fuel feeding, be used for filtering the filter press lid 10 of impurity, wherein: two ends of the oil pipe 2 are respectively connected with the mechanical pump 9 and the filter press cover 10, and the circulating insert 7 is connected with the oil pipe 2 and is arranged in the movable mold 8.

The oil pipe 2 is a 304 stainless steel hollow pipe, the length of the hollow pipe is 120-130 mm, the diameter of the outer ring of the hollow pipe is 15mm, and the diameter of the inner ring of the hollow pipe is 9 mm.

The oil pipe both sides be equipped with the end cap 4 that is used for the shutoff for in main casing 1 die-casting in-process aluminium liquid can not irritate into oil pipe 2, wherein: the plug 4 is connected with the main shell 1 in a welding mode, the plug 4 is made of 304 stainless steel, the diameter of the outer ring is 15mm, and the thickness of the outer ring is 2 mm.

Oil pipe 2 on be equipped with locating pin 3, locating pin 3 is the cylinder structure, long 10mm, the outer lane diameter is 6mm, wherein: the positioning pin 3 prevents the machining oil pipe 2 from moving under stress after die casting, and the positioning pin 3 is in interference fit with the circulating insert 7 to prevent high-speed aluminum liquid in the die casting process from washing off the oil pipe 2.

And a connecting port 5 for connecting with an oil pipe is arranged on the mechanical pump 9.

The filter press cover 10 is provided with a cover cavity 6 for connecting with an oil pipe.

The main casing body 1 is made of aluminum alloy, the oil pipe 2 is coated with 3mm thick aluminum alloy, the main casing body 1 and the oil pipe 2 are cast together, and the direction of the oil pipe 2 is consistent with the direction of the aluminum alloy coating coated on the main casing body 1.

The installation principle is as follows:

as shown in fig. 3-6, the oil pipe 2 is pre-cast into the main casing 1, the main casing 1 is in a blank state, one end of the oil pipe 2 extends out of a part in the cover cavity 6, and the other end of the oil pipe extends out of a part in the connecting port 5; the positioning pin 3 penetrates through the main shell 1 to extend for 5mm, is inserted into the circulating insert 7 in an interference manner, is punched into the movable mold 8 by aluminum liquid in the die casting process, and is taken down from the movable mold 8 after the main shell 1 is finished, the aluminum liquid wraps the middle part of the oil pipe 2 and part of the positioning pin 3, and the direction of the oil pipe 2 is consistent with the direction of an aluminum alloy layer wrapped outside the main shell 1; the oil pipe 2 is machined to open the plug 4, and after machining, the outlines of the two ends of the oil pipe 2 are respectively consistent with the shapes of the hole walls of the cover cavity 6 and the connecting port 5; after the die casting is finished, the positioning pin 3 is pulled out of the circulating insert 7, after the service life of the circulating insert 7 is finished, the circulating insert 7 is pulled out of the driven die 8 to replace a new part, and the circulating insert 7 is fixed in the movable die 8 through the clamping groove.

The foregoing embodiments may be modified in various ways by those skilled in the art without departing from the spirit and scope of the present invention, which is not limited by the above embodiments but is to be accorded the full scope defined by the appended claims, and all such modifications and variations are within the scope of the invention.

Claims

1. A transmission housing pre-cast tubing structure, comprising: main casing body with set up oil pipe, movable mould, circulation mold insert, mechanical pump on main casing body, be used for filtering impurity's filter press lid, wherein: the two ends of the oil pipe are respectively connected with the mechanical pump and the filter press cover, and the circulating insert is connected with the oil pipe and arranged in the movable die.

2. The transmission case precast oil pipe structure of claim 1, wherein plugs for plugging are provided at both sides of the oil pipe.

3. The transmission case pre-cast tubing structure of claim 1, wherein the tubing is provided with a locating pin, wherein: the positioning pin is in interference fit with the circulating insert.

4. The transmission housing pre-cast tubing arrangement of claim 1, wherein the mechanical pump has a connection port for connection to a tubing.

5. The transmission housing pre-cast tubing arrangement of claim 1, wherein the filter cover is provided with a cover cavity for connection to the tubing.