CN213298281U

CN213298281U - Crankshaft

Info

Publication number: CN213298281U
Application number: CN202022179353.6U
Authority: CN
Inventors: 莫敏
Original assignee: Zhejiang Zhongmaiya Machinery Co ltd
Current assignee: Zhejiang Zhongmaiya Machinery Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-05-28
Anticipated expiration: 2030-09-29

Abstract

The utility model provides a crankshaft belongs to mechanical technical field. It has solved the current problem that the lubricated effect of bent axle is not ideal enough. This crankshaft, including axis body, eccentric block and the eccentric shaft of setting in the eccentric block outside, the outer end of axis body has the oil storage chamber, is equipped with the installation department that is used for installing the bearing on the axis body, is equipped with transfer passage on the axis body, and transfer passage's one end is linked together with the oil storage chamber, is equipped with the buffering gasbag in the oil storage chamber, and the outer end in oil storage chamber is equipped with the end cover that has the intake pipe, is equipped with the intake pipe on the end cover and is linked together with the bag. This crankshaft has can slowly send into lubricating oil and make lubricated better, the longer advantage of life of effect.

Description

Crankshaft

Technical Field

The utility model belongs to the technical field of machinery, a bent axle is related to.

Background

Based on the purpose of high efficiency, the height of a motor of the rotary compressor is gradually increased, the shaft diameter of a crankshaft is gradually reduced, and therefore, during operation, the amplitude of the crankshaft and the motor rotor swinging together is large, so that the friction and the collision between a stator and a rotor are caused; in addition, the crankshaft swings, which increases abrasion between the crankshaft and the compression assembly, eventually deteriorating the reliability of the rotary compressor.

In order to improve the situation, patents and documents related to double-support assembly schemes appear in succession at home and abroad, namely, in addition to arranging one support on a compression assembly positioned at the lower end of the motor, the other support is also arranged at the upper end of a shell, namely the upper end of the motor; unfortunately, in these dual support assembly schemes, the bearing in the other support only simply limits the crankshaft, no clearance fit between the bearing and the crankshaft is achieved, and an initial assembly force inevitably exists between the bearing and the crankshaft, which inherently limits the crankshaft, but the wear of the crankshaft is increased due to the initial assembly force, and the bearing in the other support is not oil-supplied enough and poor in lubrication, so that the reliability is finally deteriorated, and the negative effects of low energy efficiency and high noise are brought.

The crankshaft (application number: 201510983182.3) for the compressor disclosed in the Chinese patent document comprises an eccentric part, a transition element and a shaft body, wherein an oil storage chamber is arranged in the eccentric part, a first threaded column is arranged at the bottom end of the eccentric part, and a first oil guide pipe is arranged in the first threaded column; a first threaded hole is formed in the upper surface of the transition element, a second threaded hole is formed in the center of the lower surface of the transition element, and an oil duct is arranged between the first threaded hole and the second threaded hole; the axis body top is equipped with second screw thread post, is equipped with the second in the second screw thread post and leads oil pipe, and spiral helicine oil groove and linear oil groove have been seted up to the axis body, spiral helicine oil groove with linear oil groove is connected, and oil pipe is led with the second to spiral helicine oil groove and is connected. However, the crankshaft for the compressor is lubricated through the complex spiral oil groove and the linear oil groove, so that the structure is complex, and the lubricating effect is not ideal enough.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided one kind and can slowly sent into lubricating oil and made the better, the longer bent axle of life of lubricated effect.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a crankshaft, includes axis body, eccentric block and sets up the eccentric shaft in the eccentric block outside, its characterized in that, the outer end of axis body have an oil storage chamber, the axis body on be equipped with the installation department that is used for installing the bearing, the axis body on be equipped with transfer passage, transfer passage's one end with the oil storage chamber be linked together, the oil storage intracavity be equipped with the buffering gasbag, the outer end in oil storage chamber be equipped with the end cover that has the intake pipe, the end cover on be equipped with the intake pipe with the cyst chamber of buffering gasbag be linked together.

During operation, input compressed gas to the bag intracavity of buffering gasbag through the intake pipe, make buffering gasbag produce and warp, with the lubricating oil of oil storage intracavity slowly propelling movement to the lateral wall of axis body through transfer passage, realize the lubrication to this bent axle, have the better and longer advantage of life of lubricated effect.

In the crankshaft, the shaft body is in threaded connection with the oil injection nozzle, and the inner end of the oil injection nozzle is communicated with the oil storage cavity. Through setting up foretell oil nipple, be convenient for to the oil storage chamber oiling, have the convenient and comparatively simple advantage of structure of oiling.

In the above crankshaft, the buffering airbag includes a disk-shaped seat body, an elastic bag body is disposed on an inner end surface of the seat body, the bag body and an edge of the seat body form a seal, and an inner end of the air inlet pipe penetrates through the seat body and is fixedly connected with the seat body. By adopting the arrangement, the buffering air bag has the advantages of simple structure and convenience in use.

In the crankshaft, the edge of the bag body is provided with the sealing convex body, the sealing convex body is arranged along the edge of the bag body, the edge of the seat body is provided with the flanging part, and the flanging part extrudes the sealing convex body on the seat body. By adopting the arrangement, the sealing effect between the bag body and the seat body is better, and the manufacturing is more convenient.

In the above crankshaft, the oil injection nozzle is located inside the cushion bag.

In the crankshaft, a sealing ring is arranged between the end cover and one end of the shaft body. Be equipped with the sealing washer between end cover and the axis body, have the advantage of difficult revealing.

In the crankshaft, the oil storage cavity is internally provided with the filter screen. The filter screen is arranged in the oil storage cavity, so that impurities of lubricating oil can be filtered, and the service life is prolonged.

In the crankshaft, the filter screen is made of stainless steel. The filter screen is made of stainless steel materials, and has the advantages of long service life and high structural strength.

Compared with the prior art, this bent axle has following advantage:

1. compressed gas is input into the cavity of the buffering air bag through the air inlet pipe, so that the buffering air bag deforms, and lubricating oil in the oil storage cavity is slowly pushed to the outer side wall of the shaft body through the conveying channel, so that the crankshaft is lubricated, and the crankshaft has the advantages of good lubricating effect and long service life;

2. the oil injection nozzle is arranged, so that the oil storage cavity can be conveniently injected with oil, and the oil injection device has the advantages of convenience in oil injection and simpler structure;

3. the edge of the seat body is provided with the flanging part which extrudes the sealing convex body on the seat body, so that the sealing effect between the bag body and the seat body is better and the manufacture is more convenient;

4. the filter screen is arranged in the oil storage cavity, so that impurities of lubricating oil can be filtered, and the service life is prolonged.

Drawings

Fig. 1 is a schematic sectional view of the present crankshaft.

Fig. 2 is a partially enlarged schematic view a of fig. 1.

In the figure, 1, a shaft body; 1a, an oil storage cavity; 1b, an installation part; 1c, a conveying channel; 2. an eccentric block; 3. an eccentric shaft; 4. a buffer air bag; 4a, a seat body; 4b, a capsule body; 4c, sealing the convex body; 4d, flanging; 5. an air inlet pipe; 6. an end cap; 7. an oil injection nozzle; 8. a seal ring; 9. and (4) a filter screen.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, a crankshaft, including the axis body 1, eccentric block 2 and the eccentric shaft 3 of setting in the eccentric block 2 outside, the outer end of axis body 1 has oil storage chamber 1a, be equipped with the installation department 1b that is used for installing the bearing on the axis body 1, be equipped with transfer passage 1c on the axis body 1, transfer passage 1 c's one end is linked together with oil storage chamber 1a, be equipped with buffering gasbag 4 in the oil storage chamber 1a, oil storage chamber 1 a's outer end is equipped with the end cover 6 that has intake pipe 5, it is linked together with the bag chamber of buffering gasbag 4 to be equipped with intake pipe 5 on the end cover 6, be equipped with sealing washer 8 between the one end of end cover 6 and.

Threaded connection has pump nozzle 7 on the axis body 1, and the inner of pump nozzle 7 is linked together with oil storage chamber 1a, and pump nozzle 7 is located the inboard of buffering gasbag 4, is convenient for to oil storage chamber 1a oiling, has the convenient and comparatively simple advantage of structure of oiling.

The buffering airbag 4 comprises a disc-shaped seat body 4a, an elastic bag body 4b is arranged on the inner end face of the seat body 4a, the bag body 4b and the edge of the seat body 4a form a seal, and the inner end of the air inlet pipe 5 penetrates through the seat body 4a and is fixedly connected with the seat body 4 a. The edge of the capsule body 4b is provided with a sealing convex body 4c, the sealing convex body 4c is arranged along the edge of the capsule body 4b, the edge of the seat body 4a is provided with a flanging part 4d, and the flanging part 4d extrudes the sealing convex body 4c on the seat body 4a, so that the advantages of good sealing effect between the capsule body 4b and the seat body 4a and convenience in manufacture are achieved.

The filter screen 9 is arranged in the oil storage cavity 1a, impurities of lubricating oil can be filtered, the service life is prolonged, the filter screen 9 is made of stainless steel materials, and the oil storage cavity has the advantages of long service life and high structural strength.

During operation, through intake pipe 5 toward the intracavity of the bag of buffering gasbag 4 input compressed gas, make buffering gasbag 4 produce and warp, with the lubricating oil in the oil storage chamber 1a through the lateral wall of transfer passage 1c slow propelling movement to axis body 1, realize the lubrication to this bent axle, have the better and longer advantage of life of lubricated effect. The buffering airbag 4 comprises a disc-shaped seat body 4a, an elastic bag body 4b is arranged on the inner end face of the seat body 4a, the bag body 4b and the edge of the seat body 4a form a seal, and the inner end of the air inlet pipe 5 penetrates through the seat body 4a and is fixedly connected with the seat body 4 a.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the shaft body 1, the oil storage chamber 1a, the mounting portion 1b, the delivery passage 1c, the eccentric mass 2, the eccentric shaft 3, the cushion bladder 4, the seat body 4a, the bladder body 4b, the sealing protrusion 4c, the flanging portion 4d, the air inlet pipe 5, the end cover 6, the oil nozzle 7, the seal ring 8, the filter net 9, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a crankshaft, includes axis body (1), eccentric block (2) and sets up eccentric shaft (3) in the eccentric block (2) outside, its characterized in that, the outer end of axis body (1) oil storage chamber (1a) has, axis body (1) on be equipped with installation department (1b) that are used for installing the bearing, axis body (1) on be equipped with transfer passage (1c), transfer passage (1c) one end with oil storage chamber (1a) be linked together, oil storage chamber (1a) in be equipped with buffering gasbag (4), the outer end of oil storage chamber (1a) be equipped with end cover (6) that have intake pipe (5), end cover (6) on be equipped with intake pipe (5) with the cyst chamber of buffering gasbag (4) be linked together.

2. A crankshaft according to claim 1, characterized in that said shaft body (1) is screw-connected with a grease nipple (7), the inner end of said grease nipple (7) is connected with said oil storage chamber (1 a).

3. A crankshaft according to claim 1, wherein the buffering airbag (4) comprises a disc-shaped seat body (4a), an elastic bag body (4b) is disposed on an inner end surface of the seat body (4a), the bag body (4b) forms a seal with an edge of the seat body (4a), and an inner end of the intake pipe (5) penetrates through the seat body (4a) and is fixedly connected with the seat body (4 a).

4. A crankshaft according to claim 3, wherein the edge of the bag (4b) has a sealing protrusion (4c) and the sealing protrusion (4c) is disposed along the edge of the bag (4b), the edge of the seat (4a) has a flanging portion (4d) and the flanging portion (4d) presses the sealing protrusion (4c) against the seat (4 a).

5. A crankshaft according to claim 2, characterized in that the oil nipple (7) is located inside the cushion bladder (4).

6. A crankshaft according to claim 1, 2, 3 or 4, characterized in that a sealing ring (8) is arranged between the end cover (6) and one end of the shaft body (1).

7. A crankshaft according to claim 1, 2, 3 or 4, characterized in that the oil reservoir (1a) is provided with a filter (9).

8. A crankshaft according to claim 7, characterized in that the filter screen (9) is made of stainless steel material.