CN206449105U - A kind of reciprocating pump crankshaft with worm gear locking mechanism - Google Patents
A kind of reciprocating pump crankshaft with worm gear locking mechanism Download PDFInfo
- Publication number
- CN206449105U CN206449105U CN201720140308.5U CN201720140308U CN206449105U CN 206449105 U CN206449105 U CN 206449105U CN 201720140308 U CN201720140308 U CN 201720140308U CN 206449105 U CN206449105 U CN 206449105U
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- worm gear
- connecting rod
- trunnion
- locking mechanism
- shaft
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Abstract
The utility model discloses a kind of reciprocating pump crankshaft with worm gear locking mechanism, including bent axle, worm gear and worm gear locking mechanism, the worm gear is fixed on the bent axle by the worm gear locking mechanism, and the bent axle includes the first trunnion；Worm gear is provided with first trunnion, the worm gear is through the first trunnion and key is connected the first trunnion, the worm gear locking mechanism includes the shaft shoulder and groove being arranged on the first trunnion, the shaft shoulder is arranged on one end of the first trunnion, circlip for shaft is provided with the groove, the circlip for shaft and the groove are adapted, the worm gear is arranged between the shaft shoulder and circlip for shaft, the worm gear side and shaft shoulder is abutted against and opposite side and circlip for shaft are abutted against.Reciprocating pump crankshaft of the present utility model with worm gear locking mechanism is stable, simple and practical, easy to process quick, reduces production cost.
Description
Technical field
The utility model is related to reciprocating pump parts, more particularly to a kind of reciprocating pump crankshaft with worm gear locking mechanism.
Background technology
Large-scale reciprocating pump and to the less demanding small-sized reciprocating pump of appearance and size, as shown in figure 1, the worm gear 2 on its bent axle 1
Axial restraint is carried out by bolt 6 and pressing plate 5, then anti-rotation steel wire 7 is worn on bolt 6 carrying out anti-rotation, so need bent axle have compared with
Big axial dimension could meet installation requirement, once while anti-rotation steel wire 7 is broken, the bolt 6 of fixed worm gear 2 and the pole of pressing plate 5
Easily abjection, operation is not sufficiently stable, and structure is more complicated, and the safe and stable operation of pump is impacted.And on machining crankshafts 1
, it is necessary to which frock hole is opened up on bent axle 1 or special tooling is made to realize during fixed-use bolt hole, cause processing time consuming expense
Power, difficulty of processing is larger, and production cost is high.For small-sized reciprocating pump, the particularly small-sized reciprocating pump for particular surroundings, it is desirable to
The appearance and size of pump is as small as possible, the size of its bent axle also inevitable very little, it is impossible to meet and fix worm gear using bolt 6 and pressing plate 5
Requirement.Therefore, create a kind of stable, simple and practical, difficulty of processing is low, the low band worm gear locking knot of production cost
The reciprocating pump crankshaft of structure is the problem of solving at present.
Utility model content
For deficiencies of the prior art, the purpose of this utility model is to propose a kind of band worm gear locking mechanism
Reciprocating pump crankshaft, this reciprocating pump crankshaft with worm gear locking mechanism is stable, simple and practical, reduces difficult processing
Degree, reduces production cost.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of reciprocating pump crankshaft with worm gear locking mechanism, including bent axle, worm gear and worm gear locking mechanism, the worm gear lead to
Cross the worm gear locking mechanism to be fixed on the bent axle, the bent axle includes left axle end and right axle end, the left axle end and the right side
Be disposed between shaft end the first crank arm, first connecting rod axle journal, the first trunnion, second connecting rod axle journal, the second trunnion,
Third connecting rod axle journal and the second crank arm, the diameter of trunnion are all higher than the diameter of rod journal；Set on first trunnion
Be equipped with worm gear, the worm gear internal diameter and the first trunnion external diameter are adapted, worm gear through the first trunnion and with the first trunnion
Between key connect, the worm gear locking mechanism includes being arranged on the shaft shoulder and groove on the first trunnion, and the shaft shoulder is arranged on
Circlip for shaft is provided with one end of first trunnion, the groove, the circlip for shaft and the groove are adapted,
The worm gear is arranged between the shaft shoulder and circlip for shaft, and worm gear side and the shaft shoulder are abutted against and opposite side and axle elasticity gear
Circle is abutted against.
The diameter of trunnion is all higher than the diameter of rod journal, rod journal directly the two ends of trunnion and trunnion it
Between eccentric connection, it is not necessary to crank arm is set between rod journal and trunnion, difficulty of processing is reduced.The locking knot of worm gear
Structure is by the way of circlip for shaft and the shaft shoulder are combined, and the shaft shoulder on one end bent axle of worm gear is positioned and fixed, another
End is fixed using circlip for shaft, easy to process fast using need to only process groove during circlip for shaft on bent axle
It is prompt.The stress of worm gear is born by the shaft shoulder, and circlip for shaft is not subject to axial force substantially, so improves circlip for shaft
Reliability, it is ensured that pump is safely and steadily run.
Further, left axle end described in the utility model, right axle end, the first crank arm, the second crank arm, the first trunnion
It is located along the same line with the axis of the second trunnion, the straight line constitutes crankshaft center line.
Further, first connecting rod axle journal described in the utility model, second connecting rod axle journal and third connecting rod axle journal are relatively bent
Axle eccentric axis are set.
Further, first connecting rod axle journal described in the utility model, second connecting rod axle journal and third connecting rod axle journal be angularly
It is distributed in around crankshaft center line, and the distance of first connecting rod axle journal, second connecting rod axle journal and third connecting rod axle journal and crankshaft center line
It is equal.Pitman shaft is set alternately to exert oneself pumping cylinder along the uniform rod journal of trunnion axis, running status is good.
Further, first connecting rod axle journal described in the utility model, second connecting rod axle journal are identical with third connecting rod shaft diameter.
Further, groove described in the utility model is circumferentially disposed along the first main journal surface.
Further, bent axle described in the utility model is monoblock type cast structure.The bent axle of monoblock type cast structure is stable
Property is strong.
Compared with prior art, the beneficial effects of the utility model are mainly reflected in：
1st, worm gear locking mechanism of the present utility model is by the way of circlip for shaft and the shaft shoulder are combined, and the one of worm gear
The shaft shoulder on the bent axle of end is positioned and fixed, and the other end is fixed using circlip for shaft, during using circlip for shaft
Groove need to be only processed on bent axle, it is easy to process quick.The stress of worm gear is born by the shaft shoulder, and circlip for shaft is not subject to substantially
Axial force, so improves the reliability of circlip for shaft, it is ensured that pump is safely and steadily run；Relative to prior art,
This is simple and practical, reduces difficulty of processing, reduces production cost.
2nd, the diameter of trunnion is more than the diameter of rod journal, rod journal directly the two ends of trunnion and trunnion it
Between eccentric connection, it is not necessary to crank arm is set between rod journal and trunnion, difficulty of processing is reduced.
Brief description of the drawings
Fig. 1 is the reciprocating pump crankshaft structural representation of the prior art with worm gear locking mechanism；
Fig. 2 is the reciprocating pump crankshaft structural representation with worm gear locking mechanism of the utility model embodiment；
Fig. 3 is the crankshaft structure schematic diagram of the utility model embodiment.
In accompanying drawing, 1- bent axles；11- left axles end；The crank arms of 12- first；13- first connecting rod axle journals；The trunnions of 14- first；
The 141- shaft shoulders；142- grooves；15- second connecting rod axle journals；The trunnions of 16- second；17- third connecting rod axle journals；The cranks of 18- second
Arm；19- right axles end；2- worm gears；3- keys；4- circlips for shaft；5- pressing plates；6- bolts；7- anti-rotation steel wires.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
As shown in Fig. 2 the reciprocating pump crankshaft with worm gear locking mechanism of the present embodiment, including bent axle 1, worm gear 2 and worm gear
Locking mechanism, the worm gear 2 is fixed on the bent axle 1 by the worm gear locking mechanism, and the bent axle 1 is that stability is strong
Monoblock type cast structure, bent axle 1 includes left axle end 11 and right axle end 19, is set gradually between the left axle end 11 and right axle end 19
There are the first crank arm 12, first connecting rod axle journal 13, the first trunnion 14, second connecting rod axle journal 15, the second trunnion 16, the 3rd company
The crank arm 18 of bar axle journal 17 and second, the diameter of trunnion is all higher than the diameter of rod journal；The left axle end 11, right axle end
19th, the axis of the first crank arm 12, the second crank arm 18, the first trunnion 14 and the second trunnion 16 is located along the same line,
The straight line is constituted and crankshaft center line.The first connecting rod axle journal 13, second connecting rod axle journal 15 and third connecting rod axle journal 17 are relatively bent
Axle eccentric axis are set and, first connecting rod axle journal 13, second connecting rod axle journal 15 and third connecting rod equal with the distance of crankshaft center line
The diameter of axle journal 17 is identical and angularly uniform along crankshaft center line, first connecting rod axle journal 13, second connecting rod axle journal 15 and third connecting rod
Axle journal 17 is alternately exerted oneself to pumping cylinder, and running status is good.Worm gear 2, the internal diameter of worm gear 2 and first are provided with first trunnion 14
The external diameter of trunnion 14 is adapted, and worm gear 2 is through the first trunnion 14 and key 3 is connected the first trunnion 14, the worm gear
Locking mechanism includes the shaft shoulder 141 and groove 142 being arranged on the first trunnion 14, and the shaft shoulder 141 is arranged on the first main shaft
The right-hand member of neck 14, the groove 142 is circumferentially disposed along the surface of the first trunnion 14, and circlip for shaft 4 is provided with groove 142,
The circlip for shaft 4 and the groove 142 are adapted, the worm gear 2 be arranged on the shaft shoulder 141 and circlip for shaft 4 it
Between, the right side of worm gear 2 is abutted against with the shaft shoulder 141 and left side and circlip for shaft 4 are abutted against.
First trunnion 14 of the utility model bent axle 1 and the diameter of the second trunnion 16 be more than first connecting rod axle journal 13,
The diameter of second connecting rod axle journal 15 and third connecting rod axle journal 17, rod journal is inclined directly between the two ends of trunnion and trunnion
The heart is connected, it is not necessary to crank arm is set between rod journal and trunnion, difficulty of processing is reduced.Worm gear locking mechanism is used
The shaft shoulder 141 on the mode that circlip for shaft 4 and the shaft shoulder 141 are combined, one end bent axle 1 of worm gear 2 is positioned and fixed, separately
One end is fixed using circlip for shaft 4, using need to only process groove 142 during circlip for shaft 4 on bent axle 1, plus
Work is convenient and swift.The stress of worm gear 2 is born by the shaft shoulder 141, and circlip for shaft 4 is not subject to axial force substantially, so improves
The reliability of circlip for shaft 4, it is ensured that pump is safely and steadily run；Relative to prior art, this is simple and practical, drop
Low difficulty of processing, reduces production cost.
Finally it should be noted that above example is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model is described in detail with reference to preferred embodiment by pipe applicant, and one of ordinary skill in the art should manage
Solution, modifies or equivalent substitution to the technical solution of the utility model, without departing from the objective and scope of the technical program,
It all should cover among right of the present utility model.
Claims (7)
1. a kind of reciprocating pump crankshaft with worm gear locking mechanism, including bent axle, worm gear and worm gear locking mechanism, the worm gear pass through
The worm gear locking mechanism is fixed on the bent axle, it is characterised in that：The bent axle includes left axle end and right axle end, the left side
The first crank arm, first connecting rod axle journal, the first trunnion, second connecting rod axle journal, are disposed between shaft end and right axle end
Two trunnions, third connecting rod axle journal and the second crank arm, the diameter of trunnion are all higher than the diameter of rod journal；First master
Worm gear is provided with axle journal, the worm gear internal diameter and the first trunnion external diameter are adapted, worm gear is through the first trunnion and with the
Key is connected between one trunnion, and the worm gear locking mechanism includes the shaft shoulder and groove being arranged on the first trunnion, the axle
Shoulder, which is arranged in one end of the first trunnion, the groove, is provided with circlip for shaft, the circlip for shaft and the ditch
Groove is adapted, and the worm gear is arranged between the shaft shoulder and circlip for shaft, worm gear side and the shaft shoulder abut against and opposite side and
Circlip for shaft is abutted against.
2. the reciprocating pump crankshaft according to claim 1 with worm gear locking mechanism, it is characterised in that：The left axle end, the right side
Shaft end, the first crank arm, the second crank arm, the axis of the first trunnion and the second trunnion are located along the same line, the straight line
Constitute crankshaft center line.
3. the reciprocating pump crankshaft according to claim 2 with worm gear locking mechanism, it is characterised in that：The first connecting rod axle
Neck, second connecting rod axle journal and third connecting rod axle journal are with respect to crankshaft center line eccentric setting.
4. the reciprocating pump crankshaft according to claim 3 with worm gear locking mechanism, it is characterised in that：The first connecting rod axle
Neck, second connecting rod axle journal and third connecting rod axle journal are angularly distributed in around crankshaft center line, and first connecting rod axle journal, second connecting rod
Axle journal and third connecting rod axle journal are equal with the distance of crankshaft center line.
5. the reciprocating pump crankshaft according to claim 1 with worm gear locking mechanism, it is characterised in that：The first connecting rod axle
Neck, second connecting rod axle journal are identical with third connecting rod journal diameter.
6. the reciprocating pump crankshaft according to claim 1 with worm gear locking mechanism, it is characterised in that：The groove is along first
Main journal surface is circumferentially disposed.
7. the reciprocating pump crankshaft according to claim 1 with worm gear locking mechanism, it is characterised in that：The bent axle is overall
Formula cast structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140308.5U CN206449105U (en) | 2017-02-16 | 2017-02-16 | A kind of reciprocating pump crankshaft with worm gear locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140308.5U CN206449105U (en) | 2017-02-16 | 2017-02-16 | A kind of reciprocating pump crankshaft with worm gear locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206449105U true CN206449105U (en) | 2017-08-29 |
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ID=59665911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720140308.5U Active CN206449105U (en) | 2017-02-16 | 2017-02-16 | A kind of reciprocating pump crankshaft with worm gear locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206449105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678955A (en) * | 2018-07-23 | 2018-10-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Crank axle, screw compressor and vehicle |
-
2017
- 2017-02-16 CN CN201720140308.5U patent/CN206449105U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678955A (en) * | 2018-07-23 | 2018-10-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Crank axle, screw compressor and vehicle |
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