CN210218022U - Oil-free air compressor - Google Patents
Oil-free air compressor Download PDFInfo
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- CN210218022U CN210218022U CN201920570519.1U CN201920570519U CN210218022U CN 210218022 U CN210218022 U CN 210218022U CN 201920570519 U CN201920570519 U CN 201920570519U CN 210218022 U CN210218022 U CN 210218022U
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- connecting rod
- air compressor
- heat dissipation
- oil
- bent axle
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Abstract
The utility model relates to an oil-free air compressor, include the crankcase and set up the bent axle in the crankcase, the one end of bent axle is provided with the motor, the other end of bent axle is provided with heat abstractor, heat abstractor is including the heat dissipation fan and be used for connecting the coupling assembling of heat dissipation fan and bent axle, coupling assembling including the connecting rod that is fixed in the bent axle tip and with the coaxial fixed cutting ferrule of heat dissipation fan, the connecting rod sets up along the radial extension of bent axle, the lower extreme of cutting ferrule seted up with connecting rod complex draw-in groove, and the fixed connecting axle that is provided with in upper end of cutting ferrule, the one end that the motor was kept away from to the crankcase is provided with the end cover, seted up on the end cover. The utility model discloses at the air compressor machine during operation, the bent axle drives the connecting rod in step and rotates, and the connecting rod drives joint complex cutting ferrule and rotates, and the connecting axle drives the heat dissipation fan and rotates, and air compression and heat dissipation go on in step, guarantee the heat dissipation stability to the air compressor machine.
Description
Technical Field
The utility model belongs to the technical field of the air compression technique and specifically relates to an oil-free air compressor is related to.
Background
The oil-free air compressor belongs to a miniature reciprocating piston type compressor, when a crankshaft of the compressor is driven to rotate by a motor, a piston with self-lubrication and without any lubricant is in reciprocating motion through transmission of a connecting rod, and the working volume formed by the inner wall of a cylinder, a cylinder cover and the top surface of the piston can be changed periodically.
The oil-free air compressor is divided into models of 2V, 3Y, 4V, 6Y and the like according to the difference of the number of cylinders, wherein 2V means that one end of a motor is provided with 2 cylinders, 3Y means that one end of the motor is provided with 3 cylinders, 4V means that two ends of the motor are both provided with 2 cylinders, 6Y means that two ends of the motor are both provided with 3 cylinders, when the number of cylinders of the air compressor is large or the requirement on the air displacement is low, an installation structure as in a comparison document (publication number: CN103850910A) and a comparison document (publication number: CN105927507A) is generally adopted, namely, an eccentric wheel is sleeved on a motor shaft of the motor, and a connecting rod of a piston is sleeved on the eccentric wheel, and a crankshaft is not needed in the structure, so that the end part of the motor shaft is directly and fixedly connected with the center position of the fan blade, the fan blade and.
However, when the number of cylinders of the air compressor is small and the requirement on the displacement is high, the displacement of the cylinders needs to be increased, and therefore the stroke of the piston needs to be increased, that is, the eccentric distance of the eccentric wheel needs to be increased, but a bearing structure with a larger diameter is further sleeved between the connecting rod and the eccentric wheel, so that the volume of the air compressor is too large due to the connection of the eccentric wheel, and therefore, when the number of cylinders at one end or two ends of the air compressor is small, such as 2V and 4V air compressors, and simultaneously the requirement on the displacement is high, a crankshaft structure needs to be adopted, such as a crankshaft structure in a comparison document (publication number: CN103850910A) and (publication number: CN105927507A), that is, a crankshaft is connected to a motor shaft of the motor, and the connecting rod of. However, as shown in the above mentioned comparison document, the fan blade needs to be fixed at the end of the crankshaft after the crankshaft is adopted, so the crankshaft in the above mentioned comparison document is fixed with the eccentric position of the fan blade, the structure hardly ensures the coaxiality of the fan blade and the motor shaft when the fan blade is installed, and the unstable condition of the fan blade is easy to occur in the long-term use process, and at the same time, the diameter range of the crankshaft when rotating is large, so the fan blade is difficult to extend out of the crankcase, so the fan blade needs to be directly installed in the crankcase, and then the air inlet is arranged on the crankcase, the structure makes the cooling airflow generated by the fan blade directly blow to the moving part in the crankcase, which can cause the deposition of the moving part after long.
In order to solve the problem that the fan blade is unstable in rotation after the crankshaft is adopted, in a common method in the field, the fan blade is additionally and independently installed, such as a comparison document (publication number: CN104564613B), the fan blade is installed at the bottom of a crankcase, and meanwhile, the fan blade is difficult to drive through a motor shaft, so that an independent motor is needed to drive the fan blade, but the problem that an air compressor and the fan blade work asynchronously exists, namely, in the actual use process, the requirement on heat dissipation during the operation of the air compressor is high, once the motor driving the fan blade breaks down, the motor, the crankcase, an air cylinder and a piston of the main body of the air compressor are difficult to dissipate heat, the failure rate is extremely high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an oilless air compressor is provided with heat abstractor at the end of bent axle, realizes that air compression and heat dissipation go on in step, guarantees the heat radiation stability to the air compressor machine.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides an oil-free air compressor, includes the crankcase and sets up the bent axle in the crankcase, the one end of bent axle is provided with the motor, the other end of bent axle is provided with heat abstractor, heat abstractor is including the heat dissipation fan and be used for connecting the coupling assembling of heat dissipation fan and bent axle, coupling assembling including be fixed in the connecting rod of bent axle tip and with the heat dissipation fan coaxial fixed cutting ferrule, the connecting rod sets up along the radial extension of bent axle, the lower extreme of cutting ferrule seted up with connecting rod complex draw-in groove, just the fixed connecting axle that is provided with in upper end of cutting ferrule, the one end that the motor was kept away from to the crankcase is provided with the end cover, seted up on the end cover and rotated the coaxial shaft hole that is provided with.
Through adopting above-mentioned technical scheme, the rotation of starter motor drive bent axle, and the one end of keeping away from the motor at the bent axle is provided with heat abstractor, heat abstractor is still including the coupling assembling that is used for connecting heat dissipation fan and bent axle, coupling assembling is including being fixed in the epaxial connecting rod of bent axle and being fixed in the cutting ferrule on the heat dissipation fan, during the bent axle rotates, make the connecting rod drive cutting ferrule synchronous rotation, the connecting axle is fixed with the cutting ferrule, and the position of connecting axle is injectd to the end cover, make the stable drive heat dissipation fan of connecting axle rotate, and then realize.
The utility model discloses further set up to: the cutting ferrule extends along the length direction of the connecting rod, and the connecting rod and the cutting ferrule are in relative sliding fit along the length directions of the connecting rod and the cutting ferrule.
Through adopting above-mentioned technical scheme, because the manufacturing error of end cover and the assembly error of end cover and crankcase, the axis that all can lead to the shaft hole and the axis that the motor rotated the end have the deviation, can the relative slip between cutting ferrule and the connecting rod, and then reduces the connecting axle that the radial removal of connecting axle caused and the collision between the end cover, realizes the purpose of protection end cover and connecting axle, promotes heat abstractor's life.
The utility model discloses further set up to: the clamping sleeve comprises a top plate and a group of side plates, wherein the top plate is abutted to the upper end of the connecting rod, the side plates are symmetrically fixed to the lower end of the top plate, the side plates are abutted to two opposite sides of the connecting rod in the horizontal direction respectively, and spacing grooves are formed in the side plates at intervals along the length of the side plates.
Through adopting above-mentioned technical scheme, the elastic deformation volume of spacer groove increase curb plate, when the work of air compressor machine, because the axis in shaft hole and the axis deviation of motor rotation end, the elasticity setting of curb plate increases the connecting rod and the adjustable quantity of card cover removal on the rotation plane, further reduces the connecting axle vibration and with the end cover between the collision force, protection radiator unit and promotion radiator unit's practical life.
The utility model discloses further set up to: elastic plate and limiting plate are formed respectively to the both sides of interval groove, the elastic plate butt is on the connecting rod, just the elastic plate has been seted up from one side of connecting rod and along its thickness direction away from the elastic plate, be provided with spacing clearance between limiting plate and the connecting rod.
By adopting the technical scheme, the thickness of the elastic plate is reduced by the elastic groove, the material cost for manufacturing the clamping sleeve is reduced, and the deformation of elastic abutment between the clamping sleeve and the connecting rod is improved; leave spacing clearance between limiting plate and connecting rod, limiting plate thickness is greater than the elastic plate for joint strength between limiting plate and the roof is higher, and in the long-time use of air compressor machine, the elastic plate is ageing to be taken place the fracture easily, and heat abstractor rotates the in-process, and the pivoted stability of heat dissipation fan is guaranteed to the butt between limiting plate and the connecting rod.
The utility model discloses further set up to: the clamping sleeve is internally and pre-buried with an elastic sheet group, the elastic sheet group comprises a top sheet fixed in the top plate and an elastic sheet fixed in the elastic plate, and one end of the elastic sheet is fixedly connected with the top sheet.
Through adopting above-mentioned technical scheme, the parallel pre-buried in the roof of top plate, the parallel pre-buried in the elastic plate of shell fragment, fixed connection between shell fragment and the roof, when the elastic plate takes place to buckle, the firm in connection between the roof of promotion elastic plate is connected between shell fragment and the top plate, and the elastic sheet belongs to thin sheet metal simultaneously, has better elastic deformation ability, further promotes the elastic deformation ability of elastic plate to promote stable relative movement stability between cutting ferrule and the connecting rod.
The utility model discloses further set up to: the clamping sleeve and the connecting shaft are integrally formed by injection molding, one end, far away from the clamping sleeve, of the connecting shaft is provided with a ring groove, a limiting ring is clamped in the ring groove, and the limiting ring is abutted to one end, far away from the end cover, of the heat dissipation fan.
Through adopting above-mentioned technical scheme, cutting ferrule and connecting axle are through the quick shaping of moulding plastics, with the coaxial grafting of connecting axle in heat dissipation fan back, with spacing ring joint in the ring channel, and then realize the quick assembly disassembly between heat dissipation fan and the connecting axle.
The utility model discloses further set up to: the end cover is provided with towards the one end of cutting ferrule and extends the ring, extend ring and the coaxial setting in shaft hole, it just is located the equal coaxial bearing that is provided with in both ends of its axis direction to extend the ring, the connecting axle inlays and locates in the bearing, the end cover inlays and is equipped with the oil blanket ring towards the one end of heat dissipation fan and is located the shaft hole.
Through adopting above-mentioned technical scheme, the connecting axle passes bearing and oil seal ring in proper order to with the coaxial fixed of heat dissipation fan, extend the ring and increase the volume that is used for setting up bearing and oil seal ring between end cover and the connecting axle, promote connecting axle pivoted stability in the shaft hole.
The utility model discloses further set up to: ribs are arranged on the periphery of the extension ring and on one end of the end cover facing the clamping sleeve at intervals in the circumferential direction.
Through adopting above-mentioned technical scheme, the gusset promotes the firmness of extending the ring on being fixed in the end cover, and then realizes injecing the stability of connecting axle turned position.
The utility model discloses further set up to: the connecting rod has been seted up the inserting groove towards the one end of bent axle, just set up the bolt groove with inserting groove intercommunication on the connecting rod, be provided with the locking bolt between the tip of connecting rod and bent axle, the tip of locking bolt inlays and locates in the bolt groove.
Through adopting the above-mentioned technical scheme, the bolt passes through bolt groove and threaded connection in the screw, tip extrusion connecting rod until the bolt is fixed in on the bent axle, and the tip of bolt inlays and locates in the bolt groove, avoid interfering the cutting ferrule and the cooperation of being connected between, the inserting groove has been seted up towards the one end of bent axle at the connecting rod simultaneously, the inserting groove all is the shape in kidney slot with the tip of bent axle, bent axle week side butt on the inner wall of inserting groove, promote the synchronous pivoted stability between bent axle and the connecting rod, and then guarantee the stability of heat abstractor operation, realize the purpose of stable cooling air compressor machine.
The utility model discloses further set up to: the connecting rod is provided with hollow groove towards the one end of bent axle, and is equipped with a plurality of hollow grooves along connecting rod length direction interval, the connecting rod extends the reinforcing plate that has a pair of butt in the bent axle towards the one end of bent axle.
Through adopting above-mentioned technical scheme, hollow groove reduces the connecting rod cost and reduces the connecting rod quality, reduces to produce the load to the motor, forms the connecting plate between hollow groove and inserting groove, and the connecting plate extends towards the bent axle has the gusset plate, increases the butt area between connecting rod and the bent axle, and then promotes connecting rod pivoted stability, realizes the purpose of heat abstractor stable operation to the air compressor cooling.
To sum up, the utility model discloses a beneficial technological effect does:
1. the motor is started, the crankshaft rotates to achieve the purpose that the air compressor starts to work, meanwhile, the crankshaft drives the connecting rod to rotate, the connecting rod drives the clamping and matching clamping sleeve to rotate, the connecting shaft drives the heat dissipation fan to rotate, air compression and heat dissipation are achieved synchronously, and heat dissipation stability of the air compressor is guaranteed;
2. in the rotation process, the relative movement between the horizontal plane is sleeved with the connecting rod and the clamping sleeve, so that the vibration of the connecting shaft caused by the axis deviation between the shaft hole and the motor rotation end is buffered, the heat dissipation assembly and the end cover are protected, and the service life of the heat dissipation device and the air compressor is prolonged.
Drawings
Fig. 1 is a schematic view of an assembly structure of an oil-free air compressor.
FIG. 2 is an exploded view of a heat sink embodying the internal structure;
FIG. 3 is a schematic diagram for embodying an end cap construction;
figure 4 is a schematic diagram for embodying a ferrule configuration;
FIG. 5 is a schematic diagram for showing the structure of an elastic sheet set;
fig. 6 is a schematic view for embodying a connecting rod structure.
Reference numerals: 1. a crankcase; 2. a motor; 3. a crankshaft; 4. an end cap; 41. a shaft hole; 42. an extension ring; 43. a rib plate; 44. a bearing; 45. an oil seal ring; 5. a heat sink; 6. a connecting rod; 61. inserting grooves; 62. a hollow groove; 63. a reinforcing plate; 64. a bolt slot; 7. a card sleeve; 8. a top plate; 9. a side plate; 91. an elastic plate; 911. an elastic groove; 92. a limiting plate; 93. a spacing groove; 10. a heat dissipation fan; 11. a topsheet; 12. a spring plate; 13. a connecting shaft; 131. an annular groove; 132. a limit ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, an oil-free air compressor, including crankcase 1, set up motor 2 and bent axle 3 in crankcase 1, the one end of bent axle 3 and the coaxial fixed connection of rotation end of motor 2, the rotation of starter motor 2 drive bent axle 3, and the one end of keeping away from motor 2 at bent axle 3 is provided with heat abstractor 5, heat abstractor 5 is including heat dissipation fan 10, heat dissipation fan 10 and the coaxial rotation of rotation end of motor 2, make heat dissipation fan 10 guide cold air to crankcase 1 in, and guaranteed bent axle 3 and heat dissipation fan 10 synchronous working, realize the purpose of stably reducing oil-free air compressor temperature.
As shown in fig. 2 and 3, the heat sink 5 further includes a connecting assembly for connecting the heat dissipating fan 10 and the crankshaft 3, the connecting assembly including a connecting rod 6 fixed to the crankshaft 3 and a ferrule 7 fixed to the heat dissipating fan 10, an end cover 4 is arranged at one end of the crankcase 1 far away from the motor 2, the connecting component is arranged at one side of the end cover 4 facing the inside of the crankcase 1, wherein a connecting rod 6 extending in the radial direction of the crankshaft 3 and provided in the crankcase 1 so as to rotate synchronously with the crankshaft 3, and the connecting rod 6 is crossed with the axis of the rotating end of the motor 2, one end of the cutting sleeve 7 facing the connecting rod 6 is provided with a clamping groove, one end of the cutting sleeve 7 facing the end cover 4 is provided with a connecting shaft 13 in an extending way, the end cover 4 is provided with a shaft hole 41 which is coaxial with the rotating end of the motor 2, the connecting shaft 13 penetrates through the shaft hole 41, and the heat dissipation fan 10 is coaxially fixed at one end of the connecting shaft 13 extending out of the crankcase 1;
when motor 2 drives bent axle 3 and rotates for connecting rod 6 drives cutting ferrule 7 synchronous rotation, and connecting axle 13 is fixed with cutting ferrule 7, and end cover 4 prescribes a limit to the position of connecting axle 13, makes the stable drive heat dissipation fan 10 of connecting axle 13 rotate, and then realizes the purpose of stably reducing the air compressor machine temperature.
As shown in fig. 3 and 4, the cutting ferrule 7 and the connecting shaft 13 are integrally formed by injection molding, an annular groove 131 is formed in one end of the connecting shaft 13, which is far away from the cutting ferrule 7, and after the connecting shaft 13 is coaxially inserted into the heat dissipation fan 10, the limiting ring 132 is clamped in the annular groove 131, so that the heat dissipation fan 10 and the connecting shaft 13 can be quickly disassembled and assembled. An extension ring 42 is coaxially arranged at one end of the end cover 4 facing the crankcase 1 and the shaft hole 41, the connecting shaft 13 penetrates through the extension ring 42, an oil seal ring 45 is embedded in one end of the end cover 4 facing the heat dissipation fan 10, bearings 44 are embedded in two ends of the extension ring 42, the connecting shaft 13 sequentially penetrates through the bearings 44 and the oil seal ring 45 and is coaxially fixed with the heat dissipation fan 10, the extension ring 42 increases the volume of the bearing 44 and the oil seal ring 45 arranged between the end cover 4 and the connecting shaft 13, and the rotating stability of the connecting shaft 13 in the shaft hole 41 is improved; and rib plates 43 are arranged on the circumferential side of the extension ring 42 at equal intervals, and the rib plates 43 are fixed on the end cover 4, so that the firmness of the extension ring 42 is improved, and the stability of limiting the rotation position of the connecting shaft 13 is realized.
As shown in fig. 3 and 4, the ferrule 7 includes a top plate 8 and a pair of side plates 9, a slot is formed between the top plate 8 and the side plates 9, and the extending direction of the ferrule 7 is parallel to the extending direction of the connecting rod 6, after the connecting rod 6 is matched with the slot, the top plate 8 abuts against one end of the connecting rod 6 facing the end cap 4, and the side plates 9 abut against opposite sides of the connecting rod 6, so as to achieve the purpose of synchronous rotation of the ferrule 7 and the connecting rod 6; and because the manufacturing error of end cover 4 and the assembly error of end cover 4 and crankcase 1 all can lead to the axis in shaft hole 41 and the axis of motor 2 rotation end to have the deviation, can slide between cutting ferrule 7 and the connecting rod 6 relatively, and then reduce the connecting axle 13 that connecting axle 13 radial movement caused and the collision between end cover 4, realize the purpose of protection end cover 4 and connecting axle 13, promote heat abstractor 5's life.
And be provided with spacing groove 93 on curb plate 9 and along its length direction interval, increase the elastic deformation volume of curb plate 9, when the work of air compressor machine, because the axis of shaft hole 41 and the axis deviation of motor 2 rotation end, the elasticity setting of curb plate 9 increases the adjustable volume that connecting rod 6 and cutting ferrule 7 removed on the rotation plane, further reduces connecting axle 13 vibration and with the end cover 4 between the impact, protection radiator unit and promotion radiator unit's practical life.
As shown in fig. 3 and 4, an elastic plate 91 and a limit plate 92 are simultaneously formed on two sides of the spacing groove 93, wherein the elastic plate 91 abuts against the connecting rod 6, an elastic groove 911 is formed on one side of the elastic plate 91 away from the connecting rod 6, the thickness of the elastic plate 91 is reduced by the elastic groove 911, the material cost for manufacturing the ferrule 7 is reduced, and the deformation amount of elastic abutment between the ferrule 7 and the connecting rod 6 is increased; leave spacing clearance between limiting plate 92 and connecting rod 6, limiting plate 92 thickness is greater than elastic plate 91 for joint strength between limiting plate 92 and the roof 8 is higher, and in the long-time use of air compressor machine, the easy emergence fracture of elastic plate 91 ageing, heat abstractor 5 rotates the in-process, and the butt is guaranteed heat dissipation fan 10 pivoted stability between limiting plate 92 and the connecting rod 6.
As shown in fig. 5, and an elastic sheet group can be pre-embedded in advance in the manufacturing of the ferrule 7, the elastic sheet group includes a top sheet 11 and an elastic sheet 12, wherein the top sheet 11 is pre-embedded in the top plate 8 in parallel, the elastic sheet 12 is pre-embedded in the elastic plate 91 in parallel, the elastic sheet 12 is fixedly connected with the top plate 8, when the elastic plate 91 is bent, the connection between the elastic sheet 12 and the top sheet 11 improves the connection firmness between the top plate 8 of the elastic plate 91, and meanwhile, the elastic sheet belongs to sheet metal, has better elastic deformation capability, further improves the elastic deformation capability of the elastic plate 91, and improves the stability of the relative movement between the ferrule 7 and the connecting rod 6.
As shown in fig. 6, a screw hole is formed in the end of the crankshaft 3 far from the end of the motor 2, a bolt groove 64 and a bolt groove 64 are formed in the connecting rod 6, the bolt passes through the bolt groove 64 and is in threaded connection with the screw hole until the connecting rod 6 is pressed by the end of the bolt to be fixed on the crankshaft 3, and the end of the bolt is embedded in the bolt groove 64, so that interference between the clamping sleeve 7 and the connection is avoided. Simultaneously, the insertion groove 61 is arranged at one end of the connecting rod 6 facing the crankshaft 3, the end parts of the insertion groove 61 and the crankshaft 3 are both in the shape of a kidney-shaped groove, the circumferential sides of the crankshaft 3 are abutted against the inner wall of the insertion groove 61, the stability of synchronous rotation between the crankshaft 3 and the connecting rod 6 is improved, the stability of the operation of the heat dissipation device 5 is guaranteed, and the purpose of stably cooling the air compressor is achieved.
And hollow groove 62 has been seted up on connecting rod 6 and along its length direction, reduces connecting rod 6 cost and reduces connecting rod 6 quality, reduces and produces the load to motor 2, forms the connecting plate between hollow groove 62 and inserting groove 61, and the connecting plate has gusset plate 63 towards bent axle 3 extension, increases the butt area between connecting rod 6 and the bent axle 3, and then promotes connecting rod 6 pivoted stability, realizes the purpose of heat abstractor 5 stable operation to the air compressor cooling.
The implementation principle of the embodiment is as follows:
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides an oil-free air compressor, includes crankcase (1) and sets up bent axle (3) in crankcase (1), the one end of bent axle (3) is provided with motor (2), its characterized in that: the other end of the crankshaft (3) is provided with a heat dissipation device (5), the heat dissipation device (5) comprises a heat dissipation fan (10) and a connecting assembly used for connecting the heat dissipation fan (10) and the crankshaft (3), the connecting component comprises a connecting rod (6) fixed at the end part of the crankshaft (3) and a clamping sleeve (7) coaxially fixed with the heat dissipation fan (10), the connecting rod (6) extends along the radial direction of the crankshaft (3), the lower end of the clamping sleeve (7) is provided with a clamping groove matched with the connecting rod (6), a connecting shaft (13) is fixedly arranged at the upper end of the clamping sleeve (7), an end cover (4) is arranged at one end of the crankcase (1) far away from the motor (2), the end cover (4) is provided with a shaft hole (41) which is coaxial with the rotating end of the motor (2), the connecting shaft (13) penetrates through the shaft hole (41), and the heat dissipation fan (10) is coaxially fixed on the connecting shaft (13).
2. An oil-free air compressor as claimed in claim 1, wherein: the cutting ferrule (7) extends along the length direction of the connecting rod (6), and the connecting rod (6) and the cutting ferrule (7) are in relative sliding fit along the length direction of the connecting rod and the cutting ferrule.
3. An oil-free air compressor as claimed in claim 2, wherein: the clamping sleeve (7) comprises a top plate (8) abutted to the upper end of the connecting rod (6) and a group of side plates (9) symmetrically fixed to the lower end of the top plate (8), the side plates (9) are abutted to two opposite sides of the connecting rod (6) in the horizontal direction respectively, and spacing grooves (93) are formed in the side plates (9) at intervals along the length of the side plates.
4. An oil-free air compressor as claimed in claim 3, wherein: elastic plate (91) and limiting plate (92) are formed respectively to the both sides of interval groove (93), elastic plate (91) butt is on connecting rod (6), just elastic plate (91) deviate from one side of connecting rod (6) and have seted up elastic groove (911) along its thickness direction, be provided with spacing clearance between limiting plate (92) and connecting rod (6).
5. An oil-free air compressor as claimed in claim 4, wherein: the cutting ferrule (7) is internally pre-buried with an elastic sheet group, the elastic sheet group comprises a top sheet (11) fixed in the top plate (8) and an elastic sheet (12) fixed in the elastic plate (91), and one end of the elastic sheet (12) is fixedly connected with the top sheet (11).
6. An oil-free air compressor as claimed in claim 1, wherein: cutting ferrule (7) with connecting axle (13) adopt integrative injection moulding, connecting axle (13) keep away from the one end of cutting ferrule (7) and seted up ring channel (131), the joint has spacing ring (132) in ring channel (131), spacing ring (132) butt is in the one end that end cover (4) were kept away from in heat dissipation fan (10).
7. An oil-free air compressor as claimed in claim 1, wherein: end cover (4) are provided with towards the one end of cutting ferrule (7) and extend ring (42), extend ring (42) and shaft hole (41) coaxial setting, extend in ring (42) and be located the equal coaxial bearing (44) that is provided with in both ends of its axis direction, connecting axle (13) are inlayed and are located in bearing (44), end cover (4) are inlayed towards the one end of heat dissipation fan (10) and are located shaft hole (41) and are equipped with oil seal ring (45).
8. An oil-free air compressor as claimed in claim 7, wherein: rib plates (43) are arranged on the periphery of the extension ring (42) and located at one end, facing the clamping sleeve (7), of the end cover (4) at intervals in the circumferential direction.
9. An oil-free air compressor as claimed in claim 1, wherein: the connecting rod (6) is provided with an insertion groove (61) towards one end of the crankshaft (3), the connecting rod (6) is provided with a bolt groove (64) communicated with the insertion groove (61), a locking bolt is arranged between the connecting rod (6) and the end part of the crankshaft (3), and the end part of the locking bolt is embedded in the bolt groove (64).
10. An oil-free air compressor as claimed in claim 9, wherein: connecting rod (6) are provided with hollow groove (62) towards the one end of bent axle (3), and have seted up a plurality of hollow grooves (62) along connecting rod (6) length direction interval, connecting rod (6) extend towards the one end of bent axle (3) have a pair of butt in gusset plate (63) of bent axle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920570519.1U CN210218022U (en) | 2019-04-24 | 2019-04-24 | Oil-free air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920570519.1U CN210218022U (en) | 2019-04-24 | 2019-04-24 | Oil-free air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218022U true CN210218022U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920570519.1U Active CN210218022U (en) | 2019-04-24 | 2019-04-24 | Oil-free air compressor |
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| CN (1) | CN210218022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131127A (en) * | 2019-04-24 | 2019-08-16 | 浙江巨霸焊接设备制造有限公司 | A kind of oilless air compressor |
-
2019
- 2019-04-24 CN CN201920570519.1U patent/CN210218022U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131127A (en) * | 2019-04-24 | 2019-08-16 | 浙江巨霸焊接设备制造有限公司 | A kind of oilless air compressor |
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