CN216044278U

CN216044278U - Double crank for oil-free air compressor

Info

Publication number: CN216044278U
Application number: CN202122697585.5U
Authority: CN
Inventors: 陈雄广
Original assignee: Yongkang Shengsiboyi Industry And Trade Co ltd
Current assignee: Yongkang Shengsiboyi Industry And Trade Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-03-15
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses a double crank for an oil-free air compressor, which comprises a first crank and a second crank, wherein the first crank and the second crank are arranged in a shell fixedly connected to the top of a high-pressure gas tank, the inner side of the shell is connected with two fixing seats, a second gear shaft is rotatably connected between the two fixing seats through a bearing, a second gear is fixedly connected with the second gear shaft in a penetrating manner, T-shaped grooves are formed in one sides of the first crank and the second crank, a convex shaft seat and a top block are fixedly connected to the inner sides of the two T-shaped grooves, a convex shaft is fixedly connected to the surface of the convex shaft seat, racks are fixedly connected to the top and the bottom of the inner side of the T-shaped groove, teeth matched with the racks are arranged at the top and the bottom of the convex shaft seat, an internal thread through hole is formed in the inner side wall of the T-shaped groove, a plurality of blind holes are formed in the top and the bottom of the first crank and the second crank, and bolts are in threaded connection with the bottoms of the blind holes. The double crank of the utility model is simple and easy to operate, saves time and labor, is convenient to replace accessories and maintain, and is beneficial to the popularization of products.

Description

Double crank for oil-free air compressor

Technical Field

The utility model relates to the technical field of double cranks for oil-free air compressors, in particular to a double crank for an oil-free air compressor.

Background

The double crank oil-free air compressor is a main body in an air source device, is a device for converting mechanical energy of a motor into gas pressure energy, is an air pressure generating device for compressing air, and belongs to a miniature reciprocating piston type compressor. Compared with the oil-containing air compressor, the traditional oil-free air compressor has the advantages of low noise, no oil content in the exhaust gas and the like.

But the condition that wearing and tearing or damage may appear in the long-term use of the connecting axle of crank and connecting rod, need change in the lump together with the crank during the change, cost of maintenance is higher, and present crank length on the market is fixed, can not make it adapt to more air compressor through changing crank self length as the accessory, the motor of present double crank oil-free air compressor is double-end motor mostly simultaneously, motor rotor both ends with, the crank or the bent axle of motor are connected, when the motor damages, it is more troublesome to maintain the overhaul, for this reason, provide a double crank for oil-free air compressor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double crank for an oil-free air compressor, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a double crank for an oil-free air compressor comprises a first crank and a second crank, wherein the first crank and the second crank are both arranged in a shell fixedly connected to the top of a high-pressure gas tank, two fixing seats are fixedly connected to the bottom of the inner side of the shell, a second gear shaft is connected between the two fixing seats in a rotating mode through a bearing, a second gear is fixedly connected with the second gear in a penetrating mode, two ends of the second gear shaft are respectively fixedly connected with the surfaces of the first crank and the second crank, T-shaped grooves are formed in one sides of the first crank and the second crank, two convex shaft seats and ejector blocks are fixedly connected to the inner sides of the T-shaped grooves, convex shafts are fixedly connected to the surfaces of the convex shaft seats, racks are fixedly connected to the top and the bottom of the inner sides of the T-shaped grooves, teeth matched with the racks are arranged at the top and the bottom of each convex shaft seat, and through holes are formed in the inner side walls of the T-shaped grooves, a plurality of blind holes are formed in the top and the bottom of the first crank and the second crank, bolts are connected to the bottoms of the blind holes in a threaded mode, and the tail ends of the bolts penetrate through the bottoms of the blind holes and abut against the surfaces of the racks.

Preferably, the surface of the housing is fixedly connected with a motor base, the top of the motor base is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a first gear shaft through a coupler, the first gear shaft penetrates through the surface of the housing through a bearing, a first gear matched with a second gear is fixedly penetrated through one end, away from the motor, of the first gear shaft, and one end, away from the motor, of the first gear shaft is rotatably connected to the surface of the fixed base through a bearing.

Preferably, the first crank and the second crank are rotatably connected with connecting rods through protruding shafts and bearings, one ends, far away from the first crank and the second crank, of the two connecting rods are hinged with piston connecting blocks, one ends, far away from the connecting rods, of the two piston connecting blocks are fixedly connected with pistons, and piston cylinders are slidably sleeved on the outer sides of the two pistons.

Preferably, the surfaces of the two piston cylinders are provided with one-way air inlet valves and one-way air outlet valves, air suction cavities and air outlet cavities are arranged between one ends of the two piston cylinders and the inner side peripheral wall of the shell, and the two air suction cavities and the two air outlet cavities are respectively communicated with the two one-way air inlet valves and the two one-way air outlet valves.

Preferably, the two air suction cavities are communicated with a filter through a pipeline, and the two air outlet cavities are communicated with a high-pressure air tank through a pipeline.

Preferably, the top of the high-pressure gas tank is provided with a gas outlet nozzle.

Compared with the prior art, the utility model has the beneficial effects that: according to the double crank, through the design of the T-shaped groove, the convex shaft seat, the rack and the top block, the convex shaft is more convenient to replace when damaged, meanwhile, the first crank and the second crank are not required to be replaced completely, maintenance cost is effectively reduced, meanwhile, the distance between the convex shaft and the connecting shaft at the other end of the first crank and the connecting shaft at the other end of the second crank can be changed by changing the different positions of the convex shaft seat fixed in the T-shaped groove, the first crank and the second crank are suitable for more air compressors with different piston stroke distances, the applicability of the first crank and the second crank is effectively improved, the double crank is beneficial to popularization of products, meanwhile, the motor is arranged on the outer side of the shell, when the motor is damaged, the motor can be detached for maintenance and replacement only by detaching the coupler between the output shaft of the motor and the first gear shaft, and the double crank is simple and easy to operate, time-saving and labor-saving.

Drawings

FIG. 1 is a schematic cross-sectional front view of the present invention;

FIG. 2 is a schematic top sectional view of the housing of the present invention;

FIG. 3 is a schematic view of the structure of region A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of a first crank configuration of the present invention;

FIG. 5 is a cross-sectional view of a first crank of the present invention;

FIG. 6 is a schematic perspective view of a T-shaped groove according to the present invention;

FIG. 7 is a perspective view of a first crank of the present invention;

fig. 8 is a schematic perspective view of the top block of the present invention.

In the figure: 1-a high pressure gas tank; 2-a shell; 3-fixing the base; 4-a first crank; 401-camshaft seat; 402-a top block; 403-T type groove; 404-a rack; 405-an internally threaded through hole; 406-protruding shaft; 5-a first gear; 6-a second gear; 7-a connecting rod; 8-a piston connecting block; 9-a piston; 10-a piston cylinder; 11-an aspiration lumen; 12-an air outlet nozzle; 13-an air outlet cavity; 14-a filter; 15-a second crank; 16-a motor base; 17-a motor; 18-a first gear shaft; 19-a second gear shaft; 20-one-way intake valve; 21-one-way air outlet valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-8, the double crank for the oil-free air compressor comprises a first crank 4 and a second crank 15, wherein the first crank 4 and the second crank 15 are both arranged in a shell 2 fixedly connected to the top of a high-pressure gas tank 1, the bottom of the inner side of the shell 2 is fixedly connected with two fixed seats 3, a second gear shaft 19 is rotatably connected between the two fixed seats 3 through a bearing, the second gear shaft 19 is fixedly connected with a second gear 6 in a penetrating manner, and two ends of the second gear shaft 19 are respectively fixedly connected with the surfaces of the first crank 4 and the second crank 15; a T-shaped groove 403 is formed in each of one side of the first crank 4 and one side of the second crank 15, a convex shaft seat 401 and a top block 402 are fixedly connected to the inner sides of the two T-shaped grooves 403, a convex shaft 406 is fixedly connected to the surface of the convex shaft seat 401, racks 404 are fixedly connected to the top and the bottom of the inner side of each T-shaped groove 403, teeth matched with the racks 404 are arranged at the top and the bottom of each convex shaft seat 401, an internal thread through hole 405 is formed in the inner side wall of each T-shaped groove 403, a plurality of blind holes are formed in the top and the bottom of each first crank 4 and the bottom of each second crank 15, bolts are connected to the bottoms of the blind holes in a threaded manner, and the tail ends of the bolts penetrate through the bottoms of the blind holes and abut against the surfaces of the racks 404; t type groove 403, protruding axle seat 401, the design of rack 404 and kicking block 402, it is more convenient to make to change when protruding axle 406 damages, simultaneously need not to change first crank 4 and second crank 15 are whole, effectively reduce cost of maintenance, simultaneously through the difference that changes the position that protruding axle seat 401 was fixed in T type groove 403, just can change the distance of protruding axle 406 and first crank 4 and the other end connecting axle of second crank 15, make first crank 4 and second crank 15 adapt to the air compressor machine of more piston 9 stroke differences, effectively improve the practicality of first crank 4 and second crank 15, motor 17 sets up in the outside of casing 2 simultaneously, when motor 17 damages, only need demolish the shaft coupling between motor 17's output shaft and the first gear shaft 18, just can demolish motor 17 and maintain and can change, simple and easy operation, and labor saving.

Further, the fixed surface of casing 2 is connected with motor cabinet 16, the top fixedly connected with motor 17 of motor cabinet 16, the output shaft of motor 17 passes through shaft coupling fixedly connected with first gear shaft 18, first gear shaft 18 runs through the surface of casing 2 through the bearing activity, first gear shaft 18 keeps away from the fixed first gear 5 that runs through with second gear 6 assorted of the one end of motor 17, the one end that motor 17 was kept away from to first gear shaft 18 passes through the bearing and rotates and connect in the surface of fixing base 3, motor 17 drives second gear 6 through first gear shaft 18 and first gear 5 and drives first crank 4 and the operation of second crank 15, realize the operation of hyperbolic axle, effectively improve air compression efficiency.

Furthermore, the first crank 4 and the second crank 15 are both rotatably connected with connecting rods 7 through a convex shaft 406 and a bearing, one ends of the two connecting rods 7, which are far away from the first crank 4 and the second crank 15, are both hinged with piston connecting blocks 8, one ends of the two piston connecting blocks 8, which are far away from the connecting rods 7, are both fixedly connected with pistons 9, the outer sides of the two pistons 9 are both slidably sleeved with piston cylinders 10, the pistons 9 perform piston motion in the piston cylinders 10, and the processes of air intake, compression and air exhaust are sequentially realized under the mutual matching of a one-way air intake valve 20 and a one-way air outlet valve 21; one-way air inlet valve 20 and one-way air outlet valve 21 have been seted up on the surface of two piston cylinders 10, all be equipped with between the one end of two piston cylinders 10 and the inboard perisporium of casing 2 and inhale air cavity 11 and go out air cavity 13, two inhale air cavity 11 and two go out air cavity 13 and be linked together with two one-way air inlet valve 20 and two one-way air outlet valve 21 respectively, two inhale air cavity 11 and all have filter 14 through the pipeline intercommunication, two go out air cavity 13 and all be linked together through pipeline and high-pressure gas pitcher 1, the top of high-pressure gas pitcher 1 is equipped with air outlet nozzle 12, filter 14 loses the gas that enters into piston cylinder 10 and plays good filter effect, effectively prevent simultaneously that impurity from getting into in one-way air inlet valve 20 and the one-way air outlet valve 21 and leading to the valve body ventilative.

Working principle or structural principle, when the first crank 4 and the second crank 15 are used, when the protruding shaft 406 is damaged due to long-term use, the first crank 4 and the second crank 15 can be removed, the bolts in the blind holes at the top and bottom of the first crank 4 and the second crank 15 can be removed, then the jackscrew in the through hole 405 of the internal thread is removed, the top block 402, the convex shaft seat 401 and the rack 404 are drawn out from the T-shaped groove 403, the damaged convex shaft 406 and the convex shaft seat 401 are replaced by a new convex shaft 406 and a new convex shaft seat 401 which are prepared in advance, then, the camshaft seat 401, the rack 404 and the jacking block 402 are installed back into the T-shaped groove 403 and adjusted to the position where the camshaft seat 401 is needed, the bolts in the blind holes in the top and the bottom of the first crank 4 and the second crank 15 and the jacking wires in the internal thread through holes 405 are screwed down to lock the camshaft seat 401, and finally, the first crank 4 and the second crank 15 are installed back into the oil-free air compressor.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an there is not double crank for oil air compressor, includes first crank and second crank, first crank and second crank all set up in the casing of fixed connection at high-pressure gas pitcher top, its characterized in that: the bottom of the inner side of the shell is fixedly connected with two fixed seats, a second gear shaft is rotatably connected between the two fixed seats through a bearing, a second gear is fixedly connected with the second gear shaft in a penetrating way, two ends of the second gear shaft are respectively fixedly connected with the surfaces of a first crank and a second crank, a T-shaped groove is formed in one side of each of the first crank and the second crank, a boss seat and a top block are fixedly connected to the inner sides of the two T-shaped grooves, a boss shaft is fixedly connected to the surface of the boss seat, racks are fixedly connected to the top and the bottom of the inner side of each T-shaped groove, teeth matched with the racks are arranged at the top and the bottom of each boss seat, an internal thread through hole is formed in the inner side wall of each T-shaped groove, a plurality of blind holes are formed in the top and the bottom of each of the first crank and the second crank, and bolts are in threaded connection with the bottoms of the blind holes, the tail end of the bolt penetrates through the bottom of the blind hole and abuts against the surface of the rack.

2. The double crank for the oil-free air compressor according to claim 1, characterized in that: the utility model discloses a motor, including casing, motor seat, first gear shaft, second gear shaft, bearing, first gear shaft, second gear shaft, bearing, first gear shaft, motor, first gear shaft, the fixed first gear that runs through with second gear assorted that runs through of one end of motor is kept away from to first gear shaft, the one end that the motor was kept away from to first gear shaft is passed through the bearing and is rotated and connect in the surface of fixing base.

3. The double crank for the oil-free air compressor according to claim 1, characterized in that: the first crank and the second crank are both rotatably connected with connecting rods through protruding shafts and bearings, one ends, far away from the first crank and the second crank, of the connecting rods are hinged with piston connecting blocks, the piston connecting blocks are far away from pistons, one ends of the connecting rods are fixedly connected with pistons, and the outer sides of the pistons are slidably sleeved with piston cylinders.

4. The double crank for the oil-free air compressor according to claim 3, characterized in that: one-way air inlet valves and one-way air outlet valves are arranged on the surfaces of the two piston cylinders, air suction cavities and air outlet cavities are arranged between one ends of the two piston cylinders and the inner side peripheral wall of the shell, and the two air suction cavities and the two air outlet cavities are respectively communicated with the two one-way air inlet valves and the two one-way air outlet valves.

5. The double crank for the oil-free air compressor according to claim 4, characterized in that: two the chamber of breathing in all is linked together through the pipeline has the filter, two the chamber of giving vent to anger all is linked together through pipeline and high-pressure gas pitcher.

6. The double crank for the oil-free air compressor according to claim 1, characterized in that: and the top of the high-pressure gas tank is provided with a gas outlet nozzle.