CN210397700U - Differential shell plugging mechanism - Google Patents
Differential shell plugging mechanism Download PDFInfo
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- CN210397700U CN210397700U CN201921072063.2U CN201921072063U CN210397700U CN 210397700 U CN210397700 U CN 210397700U CN 201921072063 U CN201921072063 U CN 201921072063U CN 210397700 U CN210397700 U CN 210397700U
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- mounting seat
- spring mounting
- connecting sleeve
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Abstract
A differential casing plugging mechanism comprising: the air cylinder, the mounting disc, the middle connecting sleeve, the spring mounting seat and the lower pressing cover are sequentially arranged from top to bottom; the spring mounting seat is provided with a rectangular spring connected with the middle connecting sleeve and a spring gasket matched with the rectangular spring; and a first O-shaped ring for sealing the lower gland and a second O-shaped ring for connecting with the transmission shell are arranged on two sides of the bottom of the spring mounting seat. First equal-height bolts for positioning the middle connecting sleeve are arranged on two sides of the spring mounting seat; the bottom of the spring mounting seat is provided with a second equal-height bolt and a round wire spring which are used for positioning the lower gland. The utility model discloses a to the design of the poor shell shutoff mechanism in gearbox input, output shaft hole, adopt the composite seal structure that end face seal and radial seal combined together, seal the hole, its sealed effect safety and stability can be used in the automatic airtight quick-witted equipment design of reality, reaches the required technical requirement of in-service use.
Description
Technical Field
The utility model relates to a technique in gearbox housing field specifically is a differential case shutoff mechanism.
Background
The plugging mechanism is a device for detecting the tightness of a workpiece, and in practical application, because radial sealing often cannot well seal the end face, the plugging efficiency is influenced, and in severe cases, even the tightness during plugging cannot be guaranteed, so that the actual detection quality is influenced, and certain detection hidden dangers exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the aforesaid is not enough to prior art exists, provides a poor shell shutoff mechanism, adopts the composite seal structure that end face seal and radial seal combined together, seals the hole, and its sealed effect safety and stability can be used in the automatic airtight machine equipment design of reality, reaches the required technical specification of in-service use.
The utility model discloses a realize through following technical scheme:
the utility model discloses a: the air cylinder, the mounting disc, the middle connecting sleeve, the spring mounting seat and the lower pressing cover are sequentially arranged from top to bottom.
And the cylinder is provided with a positioning pin for positioning with the mounting disc.
The mounting disc is provided with an inner hexagon bolt fixedly connected with the middle connecting sleeve.
The spring mounting seat is provided with a rectangular spring connected with the middle connecting sleeve and a spring gasket matched with the rectangular spring.
And first equal-height bolts for positioning the middle connecting sleeve are arranged on two sides of the spring mounting seat.
Spring mount bottom be equipped with the second class high bolt and the round wire spring that are used for fixing a position gland down, wherein: the round wire springs are arranged on two sides of the second equal-height bolt.
Spring mount base bottom both sides be equipped with the first O type circle that is used for sealed gland down and be used for the second O type circle that links to each other with the derailleur casing, wherein: the first O-shaped ring is arranged at the joint of the lower gland and the spring mounting seat, and the second O-shaped ring is arranged on two sides of the first O-shaped ring.
Technical effects
Compared with the prior art, the utility model discloses a to the design of the poor shell shutoff mechanism in gearbox input, output shaft hole, adopt the composite seal structure that end face seal and radial seal combined together, seal the hole, its sealed effect safety and stability can be used in the airtight quick-witted equipment design of automation of reality, reaches the technical requirement of in-service use.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
wherein: a is a schematic overall structure, and b is a partial sectional view;
FIG. 2 is a schematic view of the rear housing structure of the transmission of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a rectangular spring load meter of the present invention;
FIG. 5 is a structural design drawing of the spring mounting seat of the present invention;
wherein: a is a schematic design structure diagram, and b is a schematic partial enlarged diagram;
FIG. 6 is a structural design drawing of the middle connection sleeve of the present invention;
FIGS. 7 and 8 are schematic views of example installation;
in the figure: the device comprises a cylinder 1, a mounting disc 2, a middle connecting sleeve 3, a spring mounting seat 4, a lower pressing cover 5, a positioning pin 6, an inner hexagon bolt 7, a rectangular spring 8, a spring gasket 9, a first equal-height bolt 10, a second equal-height bolt 11, a circular wire spring 12, a first O-shaped ring 13, a second O-shaped ring 14 and an upper side mounting plate 15.
Detailed Description
As shown in fig. 1, the differential case plugging mechanism according to the present embodiment includes: the air cylinder 1, the mounting disc 2, the middle connecting sleeve 3, the spring mounting seat 4 and the lower pressure cover 5 are sequentially arranged from top to bottom.
And the cylinder 1 is provided with a positioning pin 6 for positioning the mounting disc 2 and the upper mounting plate 15.
The mounting plate 2 is provided with an inner hexagon bolt 7 which is fixedly connected with the middle connecting sleeve 3.
The spring mounting seat 4 is provided with a rectangular spring 8 connected with the middle connecting sleeve 3 and a spring gasket 9 matched with the rectangular spring 8, and the pressure of the cylinder is controlled by the compression amount of the rectangular spring 8.
And first equal-height bolts 10 for positioning the middle connecting sleeve 3 are arranged on two sides of the spring mounting seat 4.
Two sides of the bottom of the spring mounting seat 4 are provided with a first O-shaped ring 13 for sealing the lower gland 5 and a second O-shaped ring 14 for connecting with a transmission shell, wherein: the first O-shaped ring 13 is arranged at the joint of the lower gland 5 and the spring mounting seat 4, and the second O-shaped rings 14 are arranged on two sides of the first O-shaped ring 13.
The working process of the device is as follows: when an upper mounting plate 15 mounted with the device descends in place, the cylinder 1 sends a signal, the cylinder shaft extends out, the lower gland 5 firstly contacts an adjusting cushion block mounted on a pre-positioning plate, so that after the first O-shaped ring 13 is compressed by 1.5mm, the lower plane of the second O-shaped ring 14 on the spring mounting seat 4 contacts the transmission shell; with the continuous extension of the cylinder 1 and the continuous compression of the rectangular spring, the end face seal and the radial seal are in place at the moment until the stroke of the cylinder 1 is finished, and a composite seal is formed.
The pressure provided by the device is mainly controlled by the cylinder and the rectangular spring, so the parameters of the rectangular spring and the cylinder are determined, the internal pressure is 0.1MPa, and the diameter of the hole is 0.1MPa according to the test requirement
The internal pressure generated by the hole was found to be:
since the lower gland 5 offsets a portion of the aperture area, the actual pressure is less than calculated:
as shown in fig. 3, according to the above calculation results, a spring having a desired spring constant can be selected.
As shown in fig. 5, the problem of installing the first and second O-rings needs to be considered in the design of the spring installation seat, and since the differential housing plugging mechanism is vertically installed, an inverted trapezoidal groove design is adopted to prevent the first and second O-rings from falling off; the deformation (extrusion amount) of the first O-shaped ring and the second O-shaped ring in the groove is necessary for the sealing function, and the compression amount is 15% -25% which is a proper compression amount according to the design standard of static sealing.
As shown in fig. 1 and 6, the middle connecting sleeve 3 and the spring mounting seat 4 are positioned by clearance fit of hole pins thereof, and are guided and axially positioned by 4 equal-height bolts; in designing the intermediate connecting sleeve 3, a hole is ensured
The first equal-height bolt 10 can move smoothly, the height error among the four holes is as small as possible, otherwise, the stress is uneven, and a blocking phenomenon is formed.
As shown in fig. 2, after sealing each hole and the large end face of the rear shell of the transmission, the inner cavity becomes a sealed cavity, and then compressed air is injected into the sealed cavity through a multifunctional leakage and flow tester Qualitek mR to perform a pressure maintaining test, wherein the test requirements are as follows: the leakage rate is qualified under the condition that the ventilation pressure is 0.1MPa, the leakage rate is below 8sccm, and the precision requirement is +/-8% of a standard discharge spout.
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 (5)
1. A differential casing plugging mechanism, comprising: the air cylinder, the mounting disc, the middle connecting sleeve, the spring mounting seat and the lower pressing cover are sequentially arranged from top to bottom;
the spring mounting seat is provided with a rectangular spring connected with the middle connecting sleeve and a spring gasket matched with the rectangular spring;
spring mount base bottom both sides be equipped with the first O type circle that is used for sealed gland down and be used for the second O type circle that links to each other with the derailleur casing, wherein: the first O-shaped ring is arranged at the joint of the lower gland and the spring mounting seat, and the second O-shaped ring is arranged on two sides of the first O-shaped ring.
2. The differential case plugging mechanism of claim 1 wherein said cylinder is provided with a locating pin for locating with a mounting plate.
3. The differential case plugging mechanism of claim 1, wherein said mounting plate is provided with a hexagon socket head cap screw for fixedly connecting with the intermediate connecting sleeve.
4. The differential case plugging mechanism of claim 1, wherein said spring mounting seat is provided with first equal height bolts on both sides for positioning the middle connection sleeve.
5. The differential case plugging mechanism of claim 1 or 4, wherein a second equal-height bolt and a round wire spring for positioning the lower gland are arranged at the bottom of the spring mounting seat, wherein: the round wire springs are arranged on two sides of the second equal-height bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921072063.2U CN210397700U (en) | 2019-07-10 | 2019-07-10 | Differential shell plugging mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921072063.2U CN210397700U (en) | 2019-07-10 | 2019-07-10 | Differential shell plugging mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210397700U true CN210397700U (en) | 2020-04-24 |
Family
ID=70353585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921072063.2U Active CN210397700U (en) | 2019-07-10 | 2019-07-10 | Differential shell plugging mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210397700U (en) |
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2019
- 2019-07-10 CN CN201921072063.2U patent/CN210397700U/en active Active
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