CN207554306U - A kind of attachment device of differential built-up piston - Google Patents
A kind of attachment device of differential built-up piston Download PDFInfo
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- CN207554306U CN207554306U CN201721419068.9U CN201721419068U CN207554306U CN 207554306 U CN207554306 U CN 207554306U CN 201721419068 U CN201721419068 U CN 201721419068U CN 207554306 U CN207554306 U CN 207554306U
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- pressure stage
- stage piston
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- piston rod
- ring
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Abstract
The utility model is related to a kind of attachment devices of differential built-up piston, including the hiigh pressure stage piston rod being connected through a screw thread and low-pressure stage piston rod, low-pressure stage upper cover of piston rod connects low-pressure stage piston, and hiigh pressure stage piston rod and low-pressure stage piston rod pass through inserted link and stepped groove corresponding matching；Pressure ring is equipped between hiigh pressure stage piston rod and low-pressure stage piston, otic placode is equipped on hiigh pressure stage piston rod, attachment strap is equipped on the outside of otic placode, attachment strap is connected on fixed low-pressure stage piston.The advantages of the utility model：The binding face requirement machining accuracy between built-up piston, matching requirements and the requirement of clearance control are relatively low compared with prior art for the present apparatus, cost is small, it is locked after assembling by multiple, reliability is high, and process and assemble is easy to assembly, easy to operate, effectively avoid after compressor operates for a long time, occur because of bolt stress repeatedly on gland, cause bolt looseness or fatigue fracture so that hiigh pressure stage piston flies out the generation of the accident of taking blame for others.
Description
Technical field
The utility model is related to Compressor Technology field, more particularly to a kind of attachment device of differential built-up piston.
Background technology
Middle-size and small-size differential piston skid compressor has following characteristics：Short stroke, high rotating speed, the middle-size and small-size grade subtractive combination of tradition
Formula piston structure is made of hiigh pressure stage piston, low-pressure stage piston, gland and piston rod, and this built-up piston part is more, dress
With complexity, and the binding face requirement high precision machining between built-up piston, requirement is also high during assembling, and clearance control is very tight, into
Originally increase.Compressor is for a long time after operating, since piston moves back and forth for a long time so that bolt is because of stress repeatedly on gland, and causes
Fatigue fracture of the bolt under alternating load, loosens, and hiigh pressure stage piston is caused to fly out the accident of taking blame for others.Therefore it needs at this stage
A kind of simple and reliable for structure, the middle-size and small-size stage differential style built-up piston of less demanding to line of motion is for using.
Utility model content
The purpose of this utility model be it is complicated existing for differential built-up piston used at this stage in order to solve,
Assembling is difficult, of high cost, and fastening bolt loosening easily occurs in the long-term built-up piston that operates, and hiigh pressure stage piston is caused to fly out and is taken blame for others
Shortcoming, and a kind of attachment device of the differential built-up piston proposed.
To achieve these goals, the utility model employs following technical solution：
A kind of attachment device of differential built-up piston including hiigh pressure stage piston rod, is connected in the side of hiigh pressure stage piston rod
Low-pressure stage piston rod connects low-pressure stage piston in low-pressure stage upper cover of piston rod, it is characterised in that：Hiigh pressure stage piston rod and low-pressure stage are lived
Stopper rod is connected through a screw thread, and low-pressure stage piston rod is also locked by locking member in hiigh pressure stage piston rod, is lived in hiigh pressure stage
The side of stopper rod is equipped with the inserted link that cross section is polygon, and the ladder that cross section is polygon is equipped in the side of low-pressure stage piston
Slot, it is polygonized structure that the inside groove and outer groove of ladder slot, which are cross sections, and inserted link is corresponding with the inside groove of ladder slot to match
It closes, pressure ring is socketed on inserted link, pressure ring is arranged in the outer groove of ladder slot, and pressure ring is fastened on by the first connector
On low-pressure stage piston, the inner ring of pressure ring is the polygonal through hole with inserted link corresponding matching, and the outer ring of pressure ring is and ladder slot
The polygonized structure of outer groove corresponding matching；
One group of otic placode of circumference uniform distribution on the hiigh pressure stage piston rod, overlaps an attachment strap, each on each otic placode
Attachment strap is fastened on by the second connector on low-pressure stage piston.
Based on the above technical solution, there can be technical solution further below：
Screw hole is equipped at the center of the hiigh pressure stage piston rod side, spiral shell is equipped in the side of the low-pressure stage piston rod
Bar, screw hole are correspondingly connected with screw rod.
The locking member uses jackscrew, and first connector uses axis pin, and second connector uses screw.
The pressure ring is embedded in completely in the outer groove of the ladder slot, the lateral surface of pressure ring and the low-pressure stage piston phase
The end face answered is concordant.
The otic placode is fanning strip, and the attachment strap is also fanning strip, and the sector with otic placode corresponding matching is equipped on attachment strap
Slot.
The pressure ring is fixed on by clamp spring on the inserted link, and the inner ring of clamp spring is polygonized structure corresponding with inserted link,
The outer ring of clamp spring is polygonized structure corresponding with the inside groove of the ladder slot.
The pressure ring is fastened on by third connector on the hiigh pressure stage piston rod.
The cross section of the inserted link is regular hexagon, and the inside groove of the ladder slot and the cross section of outer groove are positive six side
Shape, the inner ring and outer ring of the pressure ring is also regular hexagon.
The utility model has the advantage of：The present apparatus binding face requirement processing between built-up piston compared with prior art
Precision, matching requirements and the requirement of clearance control are relatively low, and cost is small, are locked after assembling by multiple, and reliability is high, adds
Tooling is easy to operate with easy to assembly, effectively avoids after compressor operates for a long time, appearance because on gland bolt repeatedly by
Power causes bolt looseness or fatigue fracture so that hiigh pressure stage piston flies out the generation of the accident of taking blame for others.
Description of the drawings
Fig. 1 is the basic structure schematic diagram of the utility model；
Fig. 2 is low-pressure stage piston side view；
Fig. 3 is the side view of pressure ring；
Fig. 4 is the side view of hiigh pressure stage piston rod；
Fig. 5 is the structure diagram of attachment strap.
Specific embodiment
In order to which the utility model is more clearly understood, the present apparatus is described in detail below in conjunction with attached drawing, it is described herein
Specific embodiment be only used to explain the utility model, be not used to limit the utility model.
As shown in Figure 1 and Figure 4, the attachment device of a kind of differential built-up piston provided by the utility model, including hiigh pressure stage
Piston rod 1, in the side of hiigh pressure stage piston rod 1, connection low-pressure stage piston rod 2, is equipped at the center of 1 side of hiigh pressure stage piston rod
Screw hole 1b is equipped with screw rod 2a in the side of low-pressure stage piston rod 2, and screw hole 1b is correspondingly connected with screw rod 2a, in hiigh pressure stage piston rod 1
Uniformly distributed three top wire hole 1d, are all connected with a locking member 9, locking member 9 is low in each top wire hole 1d on circumference on side wall
Piston rod 2 of arbitrarily downgrading is locked in hiigh pressure stage piston rod 1, and locking member 9 uses jackscrew.
With reference to shown in Fig. 2, low-pressure stage piston 3 is socketed on low-pressure stage piston rod 2, in hiigh pressure stage piston rod 1 and low-pressure stage
The adjacent side of piston 3 is equipped with the inserted link 1a that cross section is regular hexagon, and the ladder of two level is equipped in the side of low-pressure stage piston 3
The inside groove and outer groove of slot 3a, ladder slot 3a are that cross section is regular hexagon structure, and inserted link 1a correspondences are plugged on ladder
In the inside groove of slot 3a.
With reference to shown in Fig. 3, pressure ring 4 is socketed on inserted link 1a, pressure ring 4 is arranged in the outer groove of ladder slot 3a, and pressure ring 4
It is fastened on low-pressure stage piston 3 by the first connector 8, the first connector 8 uses axis pin, and the inner ring of pressure ring 4 is with inserting
The regular hexagon through-hole of bar 1a corresponding matchings, the outer ring of pressure ring 4 is the regular hexagon with the outer groove corresponding matching of ladder slot 3a
Structure, pressure ring 4 are embedded in completely in the outer groove of the ladder slot 3a, and the lateral surface of pressure ring 4 is corresponding to the low-pressure stage piston 3
End face it is concordant.The pressure ring 4 is fixed on by clamp spring 6 on the inserted link 1a, and the inner ring of clamp spring 6 is corresponding with inserted link 1a more
Side shape structure, the outer ring of clamp spring 6 is polygonized structure corresponding with the inside groove of the ladder slot 3a, and pressure ring 4 also passes through third
Connector 7 is fastened on the hiigh pressure stage piston rod 1, and third connector 10 is screw.
With reference to shown in Fig. 5, one group of otic placode 11 of circumference uniform distribution on the hiigh pressure stage piston rod 1, otic placode 11 is fanning strip,
An attachment strap 5 is overlapped on each otic placode 11, attachment strap 5 is also fanning strip, and the fan with 11 corresponding matching of otic placode is equipped on attachment strap 5
Shape slot 5a is equipped with through-hole 5b on attachment strap 5, attachment strap 5 is fastened on low-pressure stage by the second connector 10 in through-hole 5b
On piston 3, the second connector 10 uses screw.
Claims (8)
1. a kind of attachment device of differential built-up piston, including hiigh pressure stage piston rod（1）, in hiigh pressure stage piston rod（1）Side
Connect low-pressure stage piston rod（2）, in low-pressure stage piston rod（2）Upper socket low-pressure stage piston（3）, it is characterised in that：Hiigh pressure stage is lived
Stopper rod（1）With low-pressure stage piston rod（2）It is connected through a screw thread, and low-pressure stage piston rod（2）Also pass through locking member（9）It is locked
In hiigh pressure stage piston rod（1）, in hiigh pressure stage piston rod（1）Side be equipped with cross section be polygon inserted link（1a）, in low pressure
Grade piston（3）Side be equipped with cross section be polygon ladder slot（3a）, ladder slot（3a）Inside groove and outer groove be
Cross section is polygonized structure, inserted link（1a）With ladder slot（3a）Inside groove corresponding matching, in inserted link（1a）Upper socket pressure
Ring（4）, pressure ring（4）It is arranged on ladder slot（3a）Outer groove in, and pressure ring（4）Pass through the first connector（8）It is fastened on
Low-pressure stage piston（3）On, pressure ring（4）Inner ring be and inserted link（1a）The polygonal through hole of corresponding matching, pressure ring（4）Outer ring be
With ladder slot（3a）Outer groove corresponding matching polygonized structure；
In the hiigh pressure stage piston rod（1）Upper one group of otic placode of circumference uniform distribution（11）, in each otic placode（11）On overlap one and take
Plate（5）, each attachment strap（5）By the second connector（10）It is fastened on low-pressure stage piston（3）On.
2. a kind of attachment device of differential built-up piston according to claim 1, it is characterised in that：It lives in the hiigh pressure stage
Stopper rod（1）The center of side is equipped with screw hole（1b）, in the low-pressure stage piston rod（2）Side be equipped with screw rod（2a）, screw hole
（1b）With screw rod（2a）It is correspondingly connected with.
3. a kind of attachment device of differential built-up piston according to claim 1, it is characterised in that：The locking member（9）
Using jackscrew, first connector（8）Using axis pin, second connector（10）Using screw.
4. a kind of attachment device of differential built-up piston according to claim 1, it is characterised in that：The pressure ring（4）It is complete
It is embedded in the ladder slot entirely（3a）Outer groove in, pressure ring（4）Lateral surface and the low-pressure stage piston（3）Corresponding end face
Concordantly.
5. a kind of attachment device of differential built-up piston according to claim 1, it is characterised in that：The otic placode（11）For
Fanning strip, the attachment strap（5）Also it is fanning strip, in attachment strap（5）It is equipped with and otic placode（11）The fan groove of corresponding matching（5a）.
6. a kind of attachment device of differential built-up piston according to claim 1, it is characterised in that：The pressure ring（4）It is logical
Cross clamp spring（6）It is fixed on the inserted link（1a）On, clamp spring（6）Inner ring be and inserted link（1a）Corresponding polygonized structure, clamp spring
（6）Outer ring be and the ladder slot（3a）The corresponding polygonized structure of inside groove.
7. a kind of attachment device of differential built-up piston according to claim 1 or 6, it is characterised in that：The pressure ring（4）
Pass through third connector（7）It is fastened on the hiigh pressure stage piston rod（1）On.
8. a kind of attachment device of differential built-up piston according to claim 1, it is characterised in that：The inserted link（1a）'s
Cross section is regular hexagon, the ladder slot（3a）Inside groove and the cross section of outer groove be regular hexagon, the pressure ring（4）
Inner ring and outer ring be also regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721419068.9U CN207554306U (en) | 2017-10-31 | 2017-10-31 | A kind of attachment device of differential built-up piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721419068.9U CN207554306U (en) | 2017-10-31 | 2017-10-31 | A kind of attachment device of differential built-up piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554306U true CN207554306U (en) | 2018-06-29 |
Family
ID=62674061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721419068.9U Active CN207554306U (en) | 2017-10-31 | 2017-10-31 | A kind of attachment device of differential built-up piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554306U (en) |
-
2017
- 2017-10-31 CN CN201721419068.9U patent/CN207554306U/en active Active
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