CN106246507A - Crankshaft group and the compressor with it - Google Patents
Crankshaft group and the compressor with it Download PDFInfo
- Publication number
- CN106246507A CN106246507A CN201610799238.4A CN201610799238A CN106246507A CN 106246507 A CN106246507 A CN 106246507A CN 201610799238 A CN201610799238 A CN 201610799238A CN 106246507 A CN106246507 A CN 106246507A
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- CN
- China
- Prior art keywords
- balance weight
- crank arm
- crankshaft group
- inserting column
- column
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/20—Shape of crankshafts or eccentric-shafts having regard to balancing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a kind of crankshaft group and have its compressor, wherein, crankshaft group includes: bent axle, and bent axle includes main shaft, crank arm and the eccentric part of the central axis eccentric setting relative to main shaft, and crank arm is located between main shaft and eccentric part；For the balance weight of counterweight, at least some of of balance weight is connected with crank arm clamping.Crankshaft group according to embodiments of the present invention, by the balance weight of counterweight is connected with crank arm clamping, simplify the structure of balance weight and the undertaking mode of crank arm, without using, rivet is fixing to be connected, decrease number of components, ensure that the reliability that balance weight is connected with crank arm, simple in construction, easy for installation, dismounting efficiency is high, brings great convenience to assembling process, both can effective stable equilibrium block, balance quality when guarantee compressor operation and reliability, can save again parts, reduces cost.
Description
Technical field
The present invention relates to Compressor Technology field, more particularly, to a kind of crankshaft group and the compressor with it.
Background technology
Reciprocting piston compressor motor does gyration and drives reciprocating motion of the pistons, owing to reciprocating motion of the pistons can produce
Inertia force, causes Reciprocting piston compressor can produce periodic vibration in operation process, in order to ensure that compressor can be stablized
Operating, is generally provided with balance weight on the crank arm of compressor crank shaft, produces when carrying out dummy piston motion by balance weight
Inertia force.Compressor in correlation technique, uses two rivets to fix bent axle and balance weight, and this fixed connection method is installed
Complexity, dismounting efficiency is low, and installation cost is high, brings very big inconvenience to assembling process.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.
To this end, the present invention proposes a kind of crankshaft group, the simple in construction of this crankshaft group, simple for assembly process, connection can
Leaning on, production efficiency is high, low cost.
The present invention also proposes a kind of compressor with above-mentioned crankshaft group.
The crankshaft group of embodiment according to a first aspect of the present invention, including: bent axle, described bent axle includes main shaft, crank arm
With the eccentric part of the central axis eccentric setting relative to described main shaft, described crank arm is located at described main shaft and described eccentric part
Between；For the balance weight of counterweight, at least some of and described crank arm clamping of described balance weight is connected.
Crankshaft group according to embodiments of the present invention, by being connected with crank arm clamping by balance weight, eliminates relevant skill
The connectors such as the rivet in art, greatly simplify the structure of balance weight and the connected mode of crank arm, decrease connection
The quantity of parts, improves the production efficiency of crankshaft group, reduces production cost, and may insure that balance weight and crank arm
Connection reliability.The simple in construction of this crankshaft group, installs more convenient, and production efficiency is higher, brings for the course of processing
Great convenience, on the one hand can stable equilibrium block effectively, on the other hand can reduce number of components, reduce production cost.
It addition, crankshaft group according to embodiments of the present invention, it is also possible to have a following additional technical characteristic:
According to one embodiment of present invention, described crank arm is provided with the slot of open at one end, and described balance weight sets
There is the inserting column being connected with described slot clamping, and at least one of radial dimension of described inserting column is more than described inserting column
The radial dimension of the one end being connected with described balance weight.
According to one embodiment of present invention, described slot includes the first groove section and the second groove section, and described first groove section is adjacent
Nearly described balance weight is arranged, and described second groove section is arranged away from described balance weight, and described inserting column includes and described first groove section
The first shell of column that shape is corresponding and described second shell of column corresponding with described second groove section shape.
According to one embodiment of present invention, the radial dimension of described first groove section is less than the radial ruler of described second groove section
Very little.
According to one embodiment of present invention, described slot forms the axially extended through hole along described crank arm, and institute
State the axial length axial length more than described second shell of column of the second groove section.
According to one embodiment of present invention, described balance weight is provided with the punching hole of open upper end, described punching hole
Centrage and the central axes of described inserting column, the axle between diapire and the end of described second shell of column of described punching hole
Being X, X >=0.5mm to distance, the internal diameter of described punching hole is D, 2mm≤D≤12mm, described first shell of column thickness diametrically
Degree Tn >=0.4mm, described second shell of column and the semidiameter Tu >=0.2mm of described first shell of column.
According to one embodiment of present invention, the radial dimension of described slot and described inserting column inserts along described inserting column
The direction of described slot is gradually increased.
According to one embodiment of present invention, the free end of described inserting column forms the arc convex protruding from lateral wall,
Described inserting column and described balance weight arc transition.
According to one embodiment of present invention, the upper surface of described balance weight inwardly concaves with the upper table at described balance weight
Face forms punching hole, and forms described inserting column, a part for the upper surface of described crank arm at the lower surface of described balance weight
Inwardly concave and form described slot with the upper surface at described crank arm, and in the lower surface formation boss of described crank arm, institute
State the axial length axial length equal to described inserting column of slot.
According to one embodiment of present invention, the axial distance between diapire and the roof of described boss of described punching hole
For X, X >=0.8mm, the external diameter of described boss is D, 2mm≤D≤12mm, minimum outer diameter size Tn of described inserting column >=
Difference Tu >=the 0.2mm of 0.4mm, the maximum outside diameter size of described inserting column and described minimum outer diameter size.
According to one embodiment of present invention, described balance weight is formed by plate stamping, and the sheet material of described balance weight extends
Rate is more than or equal to 10%, and tensile strength is less than or equal to 500N/mm2, the sheet metal thickness t >=1mm of described balance weight.
According to one embodiment of present invention, described main shaft and described eccentric part two ends with described crank arm respectively are welded
It is connected.
According to one embodiment of present invention, described bent axle is formed in one part.
According to one embodiment of present invention, described balance weight is riveted on described crank arm by Sheet Metal Forming Technology.
The compressor of embodiment according to a second aspect of the present invention, including according to the crankshaft group described in above-described embodiment.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of crankshaft group according to an embodiment of the invention；
Fig. 2 is crank arm according to an embodiment of the invention and balance weight riveting schematic diagram；
Fig. 3 is the structural representation of crankshaft group according to another embodiment of the invention；
Fig. 4 is crank arm according to another embodiment of the invention and balance weight riveting schematic diagram；
Reference:
100: crankshaft group；
10: main shaft；
20: crank arm；
21: slot；21a: stepped hole；
211: the first groove sections；212: the second groove sections；213: boss；
30: eccentric part；
40: balance weight；40a: punching hole；
41: inserting column；
411: the first shell of columns；412: the second shell of columns；413: arc convex；
200: staking punch；
300: riveted joint.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings.Below with reference to
The embodiment that accompanying drawing describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Combine accompanying drawing 1 to Fig. 4 first below and specifically describe the crankshaft group 100 of embodiment according to a first aspect of the present invention.
As shown in figures 1 and 3, crankshaft group 100 according to embodiments of the present invention includes bent axle and the balance for counterweight
Block 40, bent axle includes again main shaft 10, crank arm 20 and eccentric part 30.
Specifically, bent axle includes main shaft 10, crank arm 20 and inclined relative to the central axis eccentric setting of main shaft 10
Heart portion 30, crank arm 20 is located between main shaft 10 and eccentric part 30, at least some of and the crank arm 20 clamping phase of balance weight 40
Even.
In other words, crankshaft group 100 according to embodiments of the present invention is mainly made up of bent axle and balance weight 40, wherein, bent
Axle is mainly constituted by main shaft 10, crank arm 20 with relative to the eccentric part 30 of the central axis eccentric setting of main shaft 10.With reference to figure
1, the main shaft 10 of bent axle and eccentric part 30 the most vertically (above-below direction as shown in Figure 1) extend, and eccentric part 30
Central axis is misaligned with the central axis of main shaft 10, and main shaft 10 is located at the lower section of eccentric part 30, and crank arm 20 is located at main shaft 10
And between eccentric part 30, and the upper surface of crank arm 20 is connected with the lower end of eccentric part 30, the lower surface of crank arm 30 and main shaft
The upper end of 10 is connected.
Further, the upper surface of crank arm 20 is provided with balance weight 40, and balance weight 40 be connected with crank arm 20 clamping with
Playing the effect of counterweight, specifically, balance weight 40 can be passed through Sheet Metal Forming Technology or be realized with crank arm 20 by self structure
Fixing connection.
Thus, crankshaft group 100 according to embodiments of the present invention, by balance weight 40 is connected with crank arm 20 clamping,
Eliminate the connectors such as rivet in correlation technique, greatly simplify the balance weight 40 connected mode with crank arm 20
Structure, decreases the quantity of connection member, improves the production efficiency of crankshaft group 100, reduces production cost, and permissible
Guarantee the connection reliability of balance weight 40 and crank arm 20.The simple in construction of this crankshaft group 100, installs more convenient, produces
Efficiency is higher, brings great convenience for the course of processing, on the one hand can stable equilibrium block 40 effectively, the most permissible
Reduce number of components, reduce production cost.
Alternatively, crank arm 20 is provided with the slot 21 of open at one end, and balance weight 40 is provided with and is connected with slot 21 clamping
Inserting column 41, and at least one of radial dimension of inserting column 41 is more than one end being connected with balance weight 40 of inserting column 41
Radial dimension.
With reference to Fig. 1, crank arm 20 is provided with slot 21, and the radial dimension on slot 21 top is less than the radial dimension of bottom,
And balance weight 40 is provided with inserting column 41 towards the side of crank arm 20, the inserting column 41 of balance weight 40 inserts crank arm from top to bottom
In the slot 21 of 20 so that balance weight 40 figure crank arm 20 achieves a fixed connection.
Specifically, with crank arm 20 when mounted, balance weight 40 is owing to being become by punching press effect generation plasticity for balance weight 40
Shape so that the downside of balance weight 40 formed inserting column 41 and be expressed to crank arm 20 slot 21 in, balance weight 40 and crank arm
After 20 have assembled, the radial dimension of the inserting column 41 of the one end that is connected with balance weight 40 is less than the other end of far from equilibrium block 40
Radial dimension, the lower dimension of such inserting column 41 is more than its upper dimension so that balance weight 40 forms interlocking with crank arm 20
Structure, it is achieved can connect connected, it is ensured that the reliability of the connection of crank arm 20 and balance weight 40.
In certain specific embodiments of the invention, slot 21 includes the first groove section 211 and the second groove section 212, first
Groove section 211 is arranged adjacent to balance weight 40, and the second groove section 212 far from equilibrium block 40 is arranged, and inserting column 41 includes and the first groove section 211
The first shell of column 411 that shape is corresponding and second shell of column 412 corresponding with the second groove section 212 shape.
With reference to Fig. 1, the slot 21 of crank arm 20 is mainly made up of the first groove section 211 and the second groove section 212, the first groove section
211 near balance weight 40, the second groove section 212 far from equilibrium section, and the first groove section 211 is connected with the second groove section 212, and up and down
Connecting and arrange, the i.e. first groove section 211 is positioned at the top of the second groove section 212, corresponding, and balance weight 40 is owing to being sent out by impact
Raw plastic deformation, the inserting column 41 inserted in slot 21 is made up of the first shell of column 411 and the second shell of column 412, and the first shell of column 411 leans on
Nearly balance weight 40, the second shell of column 412 far from equilibrium block 40, the first shell of column 411 is connected with the second shell of column 412 and arranges up and down,
Balance weight 40 is fixed on crank arm 20, it is achieved crank arm 20 is connected with the clamping of balance weight 40.
Advantageously, the radial dimension of the first groove section 211 is less than the radial dimension of the second groove section 212.
As seen from Figure 2, the first groove section 211 of crank arm 20 slot 21 is formed as opened upper end end, the second groove section 212
It is connected with the first groove section 211, and is in the lower section of the first groove section 211, additionally, the radial dimension of the second groove section 212 is more than the
The radial dimension of one groove section 211, then the radial dimension of the second shell of column 412 inserting the inserting column 41 in slot 21 is more than the first post
The radial dimension of section 411, so that inserting column 41 realizes interlocking with slot 21, makes the inserting column 41 cannot be relative to crank arm 20
Moving in the vertical direction, balance weight 40 is fixedly secured on crank arm 20, it is achieved the clamping with crank arm 20 is connected.
Alternatively, slot 21 forms the axially extended through hole along crank arm 20, and the axial length of the second groove section 212 is big
Axial length in the second shell of column 412.
Specifically, as in figure 2 it is shown, the slot 21 of crank arm 20 be formed as along crank arm 20 axial (in Fig. 1 and Fig. 2
Above-below direction) through hole that extends, balance weight 40 is occurred plastic deformation to enter in through hole by impact, is formed and be connected with balance weight 40
The first shell of column 411 and the second shell of column 412 of far from equilibrium block 40, the first shell of column 411 completely into and be full of the first groove section
211, the i.e. first shell of column 411 is equal with the axial length of the first groove section 211, and the second shell of column 412 enters into the second groove section 212 and
The end of two shell of columns 412 is less than the second groove section 212 without departing from the lower end of the second groove section 212, the axial length of the i.e. second shell of column 412
Length, inserting column 41 realizes interlocking with slot 21, is possible to prevent inserting column 41 upwards to skid off in slot 21, it is ensured that balance weight
40 with the connection reliability of crank arm 20.
Advantageously, balance weight 40 is provided with punching hole 40a of open upper end, the centrage of punching hole 40a and inserting column 41
Central axes, the axial distance between diapire and the end of the second shell of column 412 of punching hole 40a is X, X >=0.5mm,
The internal diameter of punching hole 40a is D, 2mm≤D≤12mm, the first shell of column 411 thickness Tn >=0.4mm diametrically, the second shell of column
412 and the first semidiameter Tu >=0.2mm of shell of column 411.
With reference to Fig. 2, balance weight 40 is provided above punching hole 40a, one end (upper end as shown in Figure 2) of punching hole 40a
Opening wide, the central axis of punching hole 40a and the central axes of through hole on crank arm 20, the inside diameter ranges of punching hole 40a is
2mm≤D≤12mm, such as, the internal diameter of punching hole 40a can be 2mm, 10mm or 12mm, can be according to the size of slot 21
Suitable staking punch 200 is selected to be processed.
Preferably, the wall surface of punching hole 40a and the axial distance X >=0.5mm of the second shell of column 412 lower surface, at through hole
In the radial direction, punching hole 40a interior sidewall surface is to the thickness Tn >=0.4mm of the first groove section 211 inner surface, further, by
Radial dimension in the first groove section 211 is less than the radial dimension of the second groove section 212, therefore in the first groove section 211 and the second groove section
It is Tu that 212 junctions form stepped hole 21a, this stepped hole 21a at through hole thickness radially, and Tu >=0.2mm.
Balance weight 40 and crank arm 20 are when assembling, in riveted joint 300 is located at through hole and be positioned at the second groove section 212, and punching
Pressure head 200 lower end presses downward in punching hole 40a of balance weight 40, when staking punch 200 presses downward in punching hole 40a,
Extruding balance weight 40 moves down, makes its partial structurtes plastically deform into inserting column 41, and is plugged on inserting of crank arm 20
In groove 21, when the thickness of wall surface distance the second shell of column 412 lower surface of punching hole 40a is X >=0.5mm, the second shell of column 412
Lower surface and riveted joint 300 only supports when being connected, stopping punching press, now the semidiameter Tu of the second shell of column 412 and the first shell of column 411 >=
0.2mm, the first shell of column 411 thickness diametrically is Tn >=0.4mm, it is achieved balance weight 40 is reliably connected to crank arm 20
On.
Needing exist for explanation, punching hole 40a can also be pressed directly into balance weight 40 by staking punch 200 and be formed.
In other detailed description of the invention of the present invention, the radial dimension of slot 21 and inserting column 41 is inserted along inserting column 41
The direction entering slot 21 is gradually increased.
Specifically, as shown in Figure 3 and Figure 4, crankshaft group 100 is when assembling, first by crank arm 20 and balance weight 40 along perpendicular
Nogata is arranged to (above-below direction as shown in Figure 3) superposition, and wherein, balance weight 40 is located at the top of crank arm 20, balance weight 40
Top has staking punch 200, the lower section of crank arm 20 to have riveting die set, staking punch 200 punching press balance weight 40 and crank arm 20, makes song
At least some of slot 21 that defines in riveting die set of shaft arm 20, at least some of shape in riveting die set of balance weight 40
Become inserting column 41, and the slot 21 of crank arm 20 and the inserting column 41 in slot 21 are inserting slot 21 along inserting column 41
Direction on, radial dimension is gradually increased, it is simple to inserting column 41 forms interlocking in slot 21, it is achieved crank arm 20 and balance weight
The clamping of 40 is connected.
Specifically, the free end of inserting column 41 forms the arc convex 413 protruding from lateral wall, inserting column 41 and balance weight
40 arc transition.
In other words, by staking punch 200 and the effect of riveting die set, the part that is applied of balance weight 40 is struck out slotting
Connect post 41, meanwhile, form slot 21, due to the pact of riveting die set in the position corresponding with inserting column 41 of crank arm 20
Bundle, inserting column 41 and slot 21 become larger along the radial dimension of pressing direction, and in edge, the lower end shape of inserting column 41
Camber projection 413, and rounding off section is formed in the coupling part of inserting column 41 with the lower surface of balance weight 40, inserting column 41
On arc convex 413 embed in the groove of slot 21, form crank arm 20 and the interlocking structure of balance weight 40, i.e. formed mutually
Circular TOX (sheet forming interconnection technique) the junction point riveted structure inlayed, makes the two combine closely.
Additionally, the upper surface of balance weight 40 inwardly concaves forms punching hole 40a with the upper surface at balance weight 40, and flat
The lower surface of weighing apparatus block 40 forms inserting column 41, and a part for the upper surface of crank arm 20 inwardly concaves with the upper table at crank arm 20
Face forms slot 21, and at the lower surface formation boss 213 of crank arm 20, the axial length of slot 21 is equal to the axle of inserting column 41
To length.
With reference to Fig. 4 it can be seen that in punching course, balance weight 40 and crank arm 20 are by staking punch 200 and riveting die set
Common effect, downward groove can be formed at the upper surface of balance weight 40, this groove is punching hole 40a, at balance weight 40
Lower surface form inserting column 41, and form, at the upper surface of crank arm 20, the slot 21 that is downwardly concaved, crank arm 20 times
Surface forms the boss 213 consistent with riveting die set shape.
Further, due to the constraint of riveting die set, the periphery of slot 21 diapire of crank arm 20 is along forming the recessed of indent
Groove, and the top peripheral of the inserting column 41 of balance weight 40 is along the arc convex 413 of formation evagination, arc convex 413 embeds slot
In the groove of 21, add the radial dimension radial dimension more than slot 21 upper end of inserting column 41 lower end arc convex 413, make
The inserting column 41 obtaining balance weight 40 is connected in crank arm 20 slot 21, completes balance weight 40 and is connected with the fixing of crank arm 20.
Advantageously, the axial distance between diapire and the roof of boss 213 of punching hole 40a is X, X >=0.8mm, boss
The external diameter of 213 is D, 2mm≤D≤12mm, the minimum outer diameter size Tn >=0.4mm of inserting column 41, the maximum outside diameter of inserting column 41
Size and the difference Tu >=0.2mm of minimum outer diameter size.
With reference to Fig. 4, after crank arm 20 and balance weight 40 are completed, the wall surface of punching hole 40a and crank arm 20 following table
The thickness in face is X >=0.8mm, and it is 2mm≤D≤12mm that crank arm 20 lower surface forms the external diameter of boss 213, in slot 21 upper end
Minimum Tn >=the 0.4mm of outside dimension of inserting column 41, inserting column 41 forms the largest outside diameter at arc convex 413, outside maximum
Footpath size and the difference Tu >=0.2mm of minimum outer diameter size, this difference ensure that crank arm 20 and balance weight 40 form interlocking knot
Structure, it is ensured that the two fixing reliability connected.
Advantageously, balance weight 40 is formed by plate stamping, and the sheet material elongation percentage of balance weight 40 is more than or equal to 10%, and tension is strong
Degree is less than or equal to 500N/mm2, the sheet metal thickness t >=1mm of balance weight 40.
It is to say, owing to the material elongation percentage of balance weight 40 own is 10%, tensile strength is less than or equal to 500N/mm2,
Sheet metal thickness t >=the 1mm of balance weight 40, when balance weight 40 is by punching press effect, the mechanical performance of sheet material will not be damaged
Evil, as long as in the plastic deformation regime of sheet material, the Pressing Deformation of balance weight 40 does not interferes with itself performance.
Alternatively, main shaft 10 and eccentric part 30 two ends with crank arm 20 respectively are weldingly connected.By main shaft 10 and eccentric part
30 are connected with crank arm 20 by welding procedure respectively, and making three be fixedly connected into is an entirety, it is ensured that crankshaft structure
Structural stability, and, crank arm 20 can use the material different from main shaft 10, eccentric part 30 to be processed, convenient song
Shaft arm 20 individually assembles with balance weight 40.
Alternatively, bent axle is formed in one part.Integral part of structure not only makes the structure of the whole parts of bent axle more steady
Fixed, and in the course of processing, molding is convenient, has saved production cost.
In embodiments of the present invention, balance weight 40 is riveted on crank arm 20 by Sheet Metal Forming Technology.Specifically, balance weight 40
With crank arm 20 when assembling, being placed in by balance weight 40 above crank arm 20, staking punch 200 is located at above balance weight 40, riveting
300 or riveting die set be placed in below crank arm 20, by staking punch 200 and riveted joint 300 and the common effect of riveting die set,
Make balance weight 40 and crank arm 20 form interlocking structure, balance weight 40 is fixedly connected on crank arm 20, easy to operate, connect
Reliably, packaging efficiency is high, and cost is relatively low.
1 to accompanying drawing 4 specifically describes the course of processing of crankshaft group 100 according to embodiments of the present invention below in conjunction with the accompanying drawings.
The main balance weight 40 by bent axle with for counterweight of crankshaft group 100 according to embodiments of the present invention forms, wherein,
Bent axle is made up of main shaft 10, crank arm 20 and eccentric part 30, balance weight 40 be located on crank arm 20 and with crank arm 20 clamping phase
Even.
As in figure 2 it is shown, in the present embodiment, the main shaft 10 of bent axle, crank arm 20 and eccentric part 30 are one-body molded, bent axle group
Balance weight 40, when assembling, is first placed on crank arm 20, is provided above staking punch 200 at balance weight 40, at crank by part 100
Riveted joint 300 is set below arm 20, and ensures longitudinal center line and staking punch 200 and the riveted joint of the slot 21 of crank arm 20
300 longitudinal center lines overlap, and staking punch 200 moves down, is pressed in punching hole 40a of balance weight 40, applies balance weight 40
During pressure constantly increases, owing to the elongation percentage of balance weight 40 itself is relatively big, the local location of the stress of balance weight 40 is sent out
Raw plastic deformation, forms inserting column 41, the grafting during persistent pressure, in slot 21 in being pressed into crank arm 20 slot 21
The axial length of post 41 increases, and when contacting with the riveted joint 300 in 20 times end slots 21 of crank arm, it is right that staking punch 200 continues
Balance weight 40 pressurizes, and makes inserting column 41 deform in radial directions and form interlocking structure, it is ensured that inserting column 41 and slot
21 combine closely, and complete crank arm 20 and clamping fixed by balance weight 40.
As shown in Figure 4, in the present embodiment, the main shaft 10 of bent axle, crank arm 20 and eccentric part 30 process respectively, first
First balance weight 40 is arranged on crank arm 20, then crank arm 20 is weldingly connected with main shaft 10 and eccentric part 30 respectively, real
The assembling of existing crankshaft group 100.
Specifically, crank arm 20 and balance weight 40, when assembling, are placed on horizontally overlapping for balance weight 40 on crank arm 20,
Staking punch 200 is located at above balance weight 40, and riveting die set is located at the lower section of crank arm 20, and ensures staking punch 200 and riveting die
The longitudinal center line of tool overlaps, and staking punch 200 moves down the balance weight 40 to horizontally overlapping placement and crank arm 20 is executed jointly
Pressure, owing to the elongation percentage of balance weight 40 and crank arm 20 is relatively big, occurs plastic deformation to enter in riveting die set, at staking punch 200
Constantly in pressure process, the lower surface of crank arm 20 forms the boss 213 consistent with riveting die set shape, the upper table of crank arm 20
Face is formed as slot 21, and the lower end periphery of this slot 21 is along the groove of formation indent, and accordingly, the upper surface of balance weight 40 then squeezes
Swaging becomes punching hole 40a, and balance weight 40 lower surface is formed as inserting column 41, and the lower end periphery of inserting column 41 is convex along forming arc
Playing 413, arc convex 413 embeds in the groove of slot 21, makes balance weight 40 and the crank arm 20 circular junction point of local compression,
I.e. form interlocking structure, it is ensured that balance weight 40 and check of crankshaft 20 compact siro spinning technology, complete consolidating of crank arm 20 and balance weight 40
Determine clamping.
Thus, time bent axle and balance weight 40 use above-mentioned fixing snap method to assemble, simple to operate, be conducive to
Improve the two reliability connected, improve the packaging efficiency of crankshaft group 100, reduce production cost.Crankshaft group after assembling
The simple in construction of 100, only need to place overlapping with crankshaft crank for balance weight 40, it is not necessary to using rivet interlacement, assembly manipulation is simpler
Single, shorten installation time, easy for installation, efficiency of assembling is high, brings great convenience to assembling process, balance weight 40 and crank
The circular binding site intensity of the formation that arm 20 is deformed is higher, better reliability, can effective stable equilibrium block 40.
The compressor (not shown) of embodiment includes the crankshaft group according to above-described embodiment according to a second aspect of the present invention
100, owing to crankshaft group 100 according to the above embodiment of the present invention has above-mentioned technique effect, therefore, implement according to the present invention
The compressor of example also has the simple in construction of corresponding technique effect, i.e. this compressor, and each parts connect reliable, installs simple,
Production efficiency is high, and production cost is low.
Other of compressor according to embodiments of the present invention constitute and operate to come for those of ordinary skill in the art
Say it is knowable, be not described in detail at this.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " up time
Pin ", " counterclockwise ", " axially ", " radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must
Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection or each other can communication；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, permissible
It is connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For this area
For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (15)
1. a crankshaft group, it is characterised in that including:
Bent axle, described bent axle includes main shaft, crank arm and the eccentric part of the central axis eccentric setting relative to described main shaft, institute
State crank arm to be located between described main shaft and described eccentric part；
For the balance weight of counterweight, at least some of and described crank arm clamping of described balance weight is connected.
2. according to the crankshaft group described in claim 1, it is characterised in that described crank arm is provided with inserting of open at one end
Groove, described balance weight is provided with the inserting column being connected with described slot clamping, and at least one of radial direction of described inserting column
Size is more than the radial dimension of one end being connected with described balance weight of described inserting column.
3. according to the crankshaft group described in claim 2, it is characterised in that described slot includes the first groove section and the second groove
Section, described first groove section is arranged adjacent to described balance weight, and described second groove section is arranged away from described balance weight, described inserting column bag
Include first shell of column corresponding with described first groove section shape and described second shell of column corresponding with described second groove section shape.
4. according to the crankshaft group described in claim 3, it is characterised in that the radial dimension of described first groove section is less than described
The radial dimension of the second groove section.
5. according to the crankshaft group described in claim 3, it is characterised in that described slot forms axial along described crank arm
The through hole extended, and the axial length of described second groove section is more than the axial length of described second shell of column.
6. according to the crankshaft group described in claim 3, it is characterised in that described balance weight is provided with the punching press of open upper end
The central axes of hole, the centrage of described punching hole and described inserting column, the diapire of described punching hole and described second post
Axial distance between the end of section is X, X >=0.5mm, and the internal diameter of described punching hole is D, 2mm≤D≤12mm, described first
Semidiameter Tu >=the 0.2mm of shell of column thickness Tn >=0.4mm diametrically, described second shell of column and described first shell of column.
7. according to the crankshaft group described in claim 2, it is characterised in that described slot and the radial dimension of described inserting column
The direction inserting described slot along described inserting column is gradually increased.
8. according to the crankshaft group described in claim 7, it is characterised in that the free end of described inserting column is formed outside protruding from
The arc convex of sidewall, described inserting column and described balance weight arc transition.
9. according to the crankshaft group described in claim 7, it is characterised in that the upper surface of described balance weight inwardly concave with
The upper surface of described balance weight forms punching hole, and forms described inserting column, described crank arm at the lower surface of described balance weight
The part of upper surface inwardly concave and form described slot with the upper surface at described crank arm, and under described crank arm
Surface forms boss, and the axial length of described slot is equal to the axial length of described inserting column.
10. according to the crankshaft group described in claim 9, it is characterised in that the diapire of described punching hole and described boss
Axial distance between roof is X, X >=0.8mm, and the external diameter of described boss is D, 2mm≤D≤12mm, and described inserting column is
Difference Tu >=the 0.2mm of little outside dimension Tn >=0.4mm, the maximum outside diameter size of described inserting column and described minimum outer diameter size.
11. according to the crankshaft group according to any one of claim 1-10, it is characterised in that described balance weight is by plate stamping
Forming, the sheet material elongation percentage of described balance weight is more than or equal to 10%, and tensile strength is less than or equal to 500N/mm2, described balance weight
Sheet metal thickness t >=1mm.
12. according to the crankshaft group according to any one of claim 1-10, it is characterised in that described main shaft and described eccentric part
Two ends with described crank arm are weldingly connected respectively.
13. according to the crankshaft group according to any one of claim 1-6, it is characterised in that described bent axle is formed in one part.
14. according to the crankshaft group according to any one of claim 1-10, it is characterised in that described balance weight passes through presser
Skill is riveted on described crank arm.
15. 1 kinds of compressors, it is characterised in that include according to the crankshaft group according to any one of claim 1-14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610799238.4A CN106246507A (en) | 2016-08-31 | 2016-08-31 | Crankshaft group and the compressor with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610799238.4A CN106246507A (en) | 2016-08-31 | 2016-08-31 | Crankshaft group and the compressor with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106246507A true CN106246507A (en) | 2016-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610799238.4A Pending CN106246507A (en) | 2016-08-31 | 2016-08-31 | Crankshaft group and the compressor with it |
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| Country | Link |
|---|---|
| CN (1) | CN106246507A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931918A (en) * | 2017-03-21 | 2017-07-07 | 武汉理工大学 | A kind of riveted joint geometric parameter detection method |
| CN109630408A (en) * | 2019-01-11 | 2019-04-16 | 郑州跃博新能源汽车科技有限公司 | A kind of shock-reducing and noise-reducing structure of electric scroll compressor for vehicles |
| CN110319050A (en) * | 2019-06-20 | 2019-10-11 | 芜湖奇点新能源科技有限公司 | Shaft for compressor and the compressor with it, automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931918A (en) * | 2017-03-21 | 2017-07-07 | 武汉理工大学 | A kind of riveted joint geometric parameter detection method |
| CN106931918B (en) * | 2017-03-21 | 2019-11-26 | 武汉理工大学 | A kind of riveted joint geometric parameter detection method |
| CN109630408A (en) * | 2019-01-11 | 2019-04-16 | 郑州跃博新能源汽车科技有限公司 | A kind of shock-reducing and noise-reducing structure of electric scroll compressor for vehicles |
| CN110319050A (en) * | 2019-06-20 | 2019-10-11 | 芜湖奇点新能源科技有限公司 | Shaft for compressor and the compressor with it, automobile |
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