CN213743888U - Air compressor capable of reducing gear knocking noise - Google Patents
Air compressor capable of reducing gear knocking noise Download PDFInfo
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- CN213743888U CN213743888U CN202022301063.4U CN202022301063U CN213743888U CN 213743888 U CN213743888 U CN 213743888U CN 202022301063 U CN202022301063 U CN 202022301063U CN 213743888 U CN213743888 U CN 213743888U
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- air compressor
- driving gear
- gear
- pawl
- compressor shaft
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Abstract
The utility model discloses a reduce gear and strike air compressor machine of noise, include: the air compressor comprises an air compressor shaft and a driving gear, wherein the driving gear is sleeved on the air compressor shaft in an empty mode, a ratchet and pawl mechanism is arranged between the driving gear and the air compressor shaft and comprises a ratchet fixed on the driving gear and a plurality of pawls connected to the air compressor shaft, and the plurality of pawls are uniformly distributed in the circumferential direction. When the driving gear drives the air compressor shaft to rotate, the ratchet wheel and pawl mechanism plays a role in transmitting torque, the torque of the driving gear is transmitted to the air compressor shaft, when the driving torque becomes a negative value, the air compressor starts to rotate, the rotating speed of the air compressor shaft is suddenly accelerated, at the moment, the pawl slides along the tooth surface of the ratchet wheel, the torque transmission between the driving gear and the air compressor shaft is disconnected, the driving gear cannot accelerate along with the air compressor shaft, therefore, the rotating speed fluctuation of the driving gear is reduced, the tooth surface knocking noise of the gear is reduced, the noise generated during the operation of the air compressor is reduced, and the vibration amplitude is weakened.
Description
Technical Field
The utility model relates to an air compressor machine technical field, specific theory relates to a reduce air compressor machine that gear knocked noise.
Background
As a supplier of air source power of a commercial vehicle, a reciprocating piston type air compressor (air compressor for short) becomes a standard configuration of a diesel engine for the commercial vehicle. The air compressor is mounted on the diesel engine and is usually driven by a gear.
As shown in fig. 1, the air compressor includes an air compressor crankshaft 5, the air compressor crankshaft 5 is connected with a piston 7 through a connecting rod 6, the air compressor crankshaft 5 is fixedly connected with an air compressor shaft 4, and the air compressor shaft 4 is fixedly connected with a driving gear 3. As shown in fig. 2, the power of the diesel engine is transmitted to the air compressor shaft 4 sequentially through the crankshaft gear 1, the intermediate gear 2 and the driving gear 3, so as to drive the crankshaft connecting mechanism of the air compressor to move, drive the piston 7 to move, and realize the air suction and exhaust functions of the air compressor.
After piston 7 passed top dead center when the air compressor machine was inflated, because gaseous reaction force and inertial force effect, drive torque became the negative value, meant that the air compressor machine begins oneself rotatory, and air compressor shaft 4 accelerates suddenly and leads to drive gear 3 speed sudden change, and drive gear 3 accelerates the rotation suddenly for drive gear 3's flank of tooth takes place to strike the collision with intermediate gear 2's flank of tooth, and then causes the vibration, and the vibration transmits air compressor machine bent axle, organism surface through every gear bearing and causes the noise.
For the problem of gear knocking caused by air pumping of the air compressor, in the prior art, the gear is generally controlled by controlling the meshing gap of the gears, for example, a scissor gear (non-backlash gear), a gear with an adjustable center distance or a gear coating is adopted to eliminate the backlash, and the like.
The mode that adopts the scissors gear realizes that the gear does not have backlash meshing is common scheme, but this kind of scheme cost is higher, and the scissors gear mainly comprises drive gear, preloading gear and the flexible connection spare of connecting two parts, has certain reliability problem, and the scissors gear is because of it realizes not having the backlash transmission, if the shearing volume is too big, takes turns to the gear squealing scheduling problem easily.
Disclosure of Invention
To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: the air compressor capable of reducing gear knocking noise is provided, and noise and vibration during operation of the air compressor are reduced.
In order to solve the technical problem, the technical scheme of the utility model is that:
an air compressor machine for reducing gear rattle noise, comprising: the air compressor comprises an air compressor shaft and a driving gear, wherein the driving gear is sleeved on the air compressor shaft in an empty mode, a ratchet and pawl mechanism is arranged between the driving gear and the air compressor shaft and comprises a ratchet fixed on the driving gear and a plurality of pawls connected to the air compressor shaft, and the plurality of pawls are uniformly distributed in the circumferential direction.
Preferably, a pawl plate is fixed to the air compressor shaft, and the pawl is connected to the pawl plate.
Preferably, the pawl is an elastic pawl, the pawl being fixed to the pawl plate.
Preferably, the pawl is rotatably mounted on the pawl disc, and an elastic part is arranged between one side of the pawl, which is opposite to the rotation direction of the air compressor shaft, and the pawl disc.
Preferably, the elastic member is a coil spring.
Preferably, the ratchet wheel is provided integrally with the drive gear.
Preferably, one side of the driving gear is provided with a ratchet groove, and the edge of the ratchet groove forms the ratchet.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the utility model provides a drive gear air pocket is in the air compressor axle, be equipped with ratchet pawl mechanism between drive gear and the air compressor axle, when drive gear drive air compressor axle is rotatory, ratchet pawl mechanism plays the effect of transmission moment of torsion, transmit drive gear's moment of torsion for the air compressor axle, become the negative value when drive moment of torsion, the air compressor machine begins oneself when rotatory, air compressor machine axle rotational speed accelerates suddenly, at this moment, the tooth face slip of ratchet is followed to the pawl, the moment of torsion transmission disconnection between drive gear and the air compressor axle, drive gear can not accelerate along with the air compressor axle, thereby the rotational speed fluctuation of drive gear has been reduced, gear flank of tooth strikes noise has been reduced, the noise that produces when the air compressor machine operation reduces, vibration amplitude weakens.
Drawings
FIG. 1 is a schematic structural view of an air compressor;
FIG. 2 is a schematic diagram of the transmission principle of the gear driving system of the air compressor;
FIG. 3 is a schematic structural view of a first embodiment of the air compressor for reducing the gear knocking noise of the present invention;
FIG. 4 is a schematic structural view of a second embodiment of the air compressor for reducing the gear knocking noise of the present invention;
in the figure: 1-a crankshaft gear; 2-intermediate gear; 3-driving the gear; 4-air compressor shaft; 5-crankshaft of air compressor; 6-connecting rod; 7-a piston; 8-a ratchet disc; 9-a pawl; 10-a coil spring; 11-ratchet wheel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
As shown in fig. 3, an air compressor for reducing gear rattle noise includes: the air compressor comprises an air compressor shaft 4 and a driving gear 3, wherein the driving gear 3 is sleeved on the air compressor shaft 4 in an empty mode, a ratchet wheel and pawl mechanism is arranged between the driving gear 3 and the air compressor shaft 4 and comprises a ratchet wheel 11 and elastic pawls 9, a ratchet wheel groove is formed in one side of the driving gear 3, the ratchet wheel 11 is formed in the edge of the ratchet wheel groove, a plurality of pawls 9 are circumferentially and uniformly distributed and fixed on a pawl disc 8, and the pawl disc 8 is fixed on the air compressor shaft 4.
When the driving gear 3 drives the air compressor shaft 4 to rotate, the pawls 9 are matched with the ratchet wheels 11, the pawls 9 transmit the torque of the driving gear 3 to the ratchet wheel disc 8, the ratchet wheel disc 8 transmits the torque to the air compressor shaft 4, the air compressor shaft 4 rotates, and the air compressor works. When the driving torque becomes a negative value, when the air compressor starts to rotate, the rotating speed of the air compressor shaft 4 is higher than that of the driving gear 3, the air compressor shaft 4 drives the pawl 9 to rotate, the pawl 9 slides on the inclined surface of the ratchet wheel 11 in an elastic deformation mode, the torque transmission between the driving gear 3 and the air compressor shaft 4 is disconnected, so that the air compressor shaft 4 and the driving gear 3 generate a rotating speed difference, the driving gear 3 cannot accelerate along with the air compressor shaft 4, the rotating speed fluctuation of the driving gear 3 is reduced, the gear tooth surface knocking noise is reduced, the noise generated when the air compressor operates is reduced, and the vibration amplitude is weakened.
Example two
The second embodiment is basically the same as the first embodiment in structure and principle, and is different from the first embodiment only in that the pawl 9 is rotatably mounted on the pawl plate 8, and an elastic member, preferably a coil spring 10, is arranged between the pawl 8 and the side of the pawl 9 which rotates against the rotation direction of the air compressor shaft 4.
When the driving gear 3 drives the air compressor shaft 4 to rotate, the pawl 9 is always clamped at the corner of the ratchet wheel 11 under the action of the spiral spring 10, and the pawl 9 can transmit the torque of the driving gear 3 to the air compressor shaft 4. When the driving torque becomes a negative value and the air compressor starts to rotate, the pawl 9 slides on the inclined surface of the ratchet wheel 11, the torque transmission between the driving gear 3 and the air compressor shaft 4 is disconnected, so that the air compressor shaft 4 and the driving gear 3 generate a rotation speed difference, the driving gear 3 cannot accelerate along with the air compressor shaft 4, the rotation speed fluctuation of the driving gear 3 is reduced, the gear tooth surface knocking noise is reduced, the noise generated during the operation of the air compressor is reduced, and the vibration amplitude is weakened.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (7)
1. Reduce gear and strike air compressor machine of noise includes: the air compressor comprises an air compressor shaft and a driving gear, and is characterized in that the driving gear is sleeved on the air compressor shaft in an empty mode, a ratchet and pawl mechanism is arranged between the driving gear and the air compressor shaft and comprises a ratchet fixed on the driving gear and a plurality of pawls connected to the air compressor shaft, and the plurality of pawls are uniformly distributed in the circumferential direction.
2. The air compressor with reduced gear rattle noise of claim 1, wherein said air compressor shaft is fixed with a pawl plate, said pawl being connected to said pawl plate.
3. The air compressor with reduced gear rattle noise of claim 2, wherein said pawl is a resilient pawl, said pawl being fixed to said pawl plate.
4. The air compressor with reduced gear rattle noise of claim 2, wherein said pawl is rotatably mounted to said pawl plate, and an elastic member is provided between a side of said pawl which is opposite to a rotation direction of said air compressor shaft and said pawl plate.
5. The air compressor with reduced gear rattle noise of claim 4, wherein said elastic member is a coil spring.
6. The air compressor with reduced gear rattle noise of claim 1, wherein said ratchet wheel is provided integrally with said driving gear.
7. The air compressor with reduced gear rattle noise of claim 1, wherein said driving gear is provided with a ratchet groove at one side thereof, and edges of said ratchet groove form said ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022301063.4U CN213743888U (en) | 2020-10-15 | 2020-10-15 | Air compressor capable of reducing gear knocking noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022301063.4U CN213743888U (en) | 2020-10-15 | 2020-10-15 | Air compressor capable of reducing gear knocking noise |
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| Publication Number | Publication Date |
|---|---|
| CN213743888U true CN213743888U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022301063.4U Active CN213743888U (en) | 2020-10-15 | 2020-10-15 | Air compressor capable of reducing gear knocking noise |
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| CN (1) | CN213743888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696329A (en) * | 2021-08-25 | 2021-11-26 | 乐山市富侨建材有限公司 | Monitoring and warning method and system for concrete production and construction site |
-
2020
- 2020-10-15 CN CN202022301063.4U patent/CN213743888U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696329A (en) * | 2021-08-25 | 2021-11-26 | 乐山市富侨建材有限公司 | Monitoring and warning method and system for concrete production and construction site |
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