CN213684929U

CN213684929U - Novel crankshaft

Info

Publication number: CN213684929U
Application number: CN202022191112.3U
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: 2021-07-13
Anticipated expiration: 2030-09-29

Abstract

The utility model provides a novel crankshaft belongs to mechanical technical field. It has solved the current problem that the lubricated effect of bent axle is not ideal enough. This novel bent axle, 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 the oil feeding passageway on the axis body, and the inner and the oil storage chamber of oil feeding passageway are linked together, and the oil storage intracavity is equipped with the push pedal that can reciprocating motion, the axial has linked firmly the lead screw in the axis body, and threaded connection has the screw on the lead screw, and the screw links firmly and screw and push pedal mutually with axis body circumference, is equipped with motor and motor on the axis body and can drives the lead screw rotation, is equipped with. This novel bent axle has can automatic addition lubricating oil and lubricated better advantage of effect.

Description

Novel crankshaft

Technical Field

The utility model belongs to the technical field of machinery, a novel 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. But this bent axle for compressor realizes lubricated through above-mentioned comparatively complicated heliciform oil groove and linear type oil groove, and lubricated effect is not ideal enough.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a can automatic add lubricating oil and lubricated better novel bent axle of effect.

The purpose of the utility model can be realized by the following technical proposal: novel bent axle, including axis body, eccentric block and the eccentric shaft of setting in the eccentric block outside, its characterized in that, the outer end of axis body have the 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 the passageway of sending oil, send the inner of oil passageway with the oil storage chamber be linked together, the oil storage intracavity be equipped with the push pedal that can reciprocating motion, the axis body is interior to having linked firmly the lead screw, the lead screw on threaded connection have a screw, the screw with axis body circumference link firmly just the screw with the push pedal link firmly mutually, the axis body on be equipped with the motor just the motor can drive the lead screw rotate, the axis body on be equipped with the end cover, the end cover be located the outside of push pedal.

During operation, the motor drives the screw rod to rotate, and the screw rod and the screw are in threaded transmission due to the fact that the screw rod and the screw are circumferentially fixed, so that the screw is axially moved, the push plate is driven to axially move, the push plate pushes lubricating oil in the oil storage cavity to be conveyed to the outer side wall of the screw body through the oil feeding channel, and the lubricating oil feeding device has the advantages of being capable of automatically adding lubricating oil and good in lubricating effect.

In foretell novel bent axle, the screw with the push pedal between link firmly the adapter sleeve just the adapter sleeve with the coaxial setting of screw, the lateral wall of adapter sleeve be equipped with the bar recess, the bar recess be on a parallel with the axis setting of axis body, the axis body on wear to be equipped with the pin just the inner of pin inlay in the bar recess. Inlay in the bar groove through the inner of pin, make the circumference of screw and axis body fixed, have the reliable advantage of simple structure.

In the novel crankshaft, the shaft body is connected with the oil injection nozzle in a threaded manner, and the inner end of the oil injection nozzle is communicated with the oil storage cavity. Be convenient for through the oiling mouth toward the oil storage intracavity of axis body add lubricating oil, have the convenient and simple structure's of oiling advantage.

In the novel crankshaft, the inner side wall of the oil storage cavity is provided with an annular convex shoulder, the screw rod penetrates through the annular convex shoulder, and a bearing is arranged between the annular convex shoulder and the screw rod. By adopting the arrangement, the positioning effect on the screw rod is better, the screw rod can smoothly rotate, and the screw rod positioning device has the advantages of simple structure and convenience in installation.

In the novel 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 leakage.

In the novel crankshaft, the oil storage cavity is internally provided with a 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 novel crankshaft, the filter screen is made of stainless steel materials. 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 novel bent axle has following advantage:

1. the motor drives the screw rod to rotate, the screw rod and the screw nut are in threaded transmission to drive the push plate to axially move, and the push plate pushes lubricating oil in the oil storage cavity to be conveyed to the outer side wall of the shaft body through the oil feeding channel;

2. the inner end of the pin is embedded in the strip-shaped groove, so that the nut and the shaft body are circumferentially fixed, and the structure is simple and reliable;

3. lubricating oil is conveniently added into the oil storage cavity of the shaft body through the oil injection nozzle, and the oil injection device has the advantages of convenience in oil injection and simple structure;

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 front schematic view of a novel crankshaft.

FIG. 2 is a schematic cross-sectional view of the novel crankshaft.

In the figure, 1, a shaft body; 1a, an oil storage cavity; 1b, an installation part; 1c, an annular shoulder; 1d, an oil delivery channel; 2. an eccentric block; 3. an eccentric shaft; 4. pushing the plate; 5. a screw rod; 6. a nut; 7. a motor; 8. an end cap; 9. an oil injection nozzle; 10. a bearing; 11. a filter screen; 12. Connecting sleeves; 12a, strip-shaped grooves 12 a; 13. a pin.

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, the novel crankshaft comprises a shaft body 1, an eccentric block 2 and an eccentric shaft 3 arranged outside the eccentric block 2, it is characterized in that the outer end of the shaft body 1 is provided with an oil storage cavity 1a, the shaft body 1 is provided with a mounting part 1b for mounting a bearing 10, the shaft body 1 is provided with an oil delivery channel 1d, the inner end of the oil delivery channel 1d is communicated with the oil storage cavity 1a, the oil storage cavity 1a is internally provided with a push plate 4 capable of reciprocating, the axial has linked firmly lead screw 5 in the axis body 1, and threaded connection has screw 6 on the lead screw 5, has linked firmly adapter sleeve 12 and the coaxial setting of screw between screw 6 and the push pedal 4, and the lateral wall of adapter sleeve 12 is equipped with bar groove 6a, and bar groove 6a is on a parallel with the axis setting of axis body 1, and the inner of wearing to be equipped with pin 13 and pin 13 on the axis body 1 inlays in bar groove 6a, makes screw 6 fixed with the circumference of axis body 1.

Be equipped with motor 7 and motor 7 on the axis body 1 and can drive lead screw 5 and rotate, be equipped with end cover 8 on the axis body 1, end cover 8 is located the outside of push pedal 4, is equipped with the sealing washer between the one end of end cover 8 and axis body 1, has the advantage of difficult leakage.

Threaded connection has oiling mouth 9 on the axis body 1, and the inner of oiling mouth 9 is linked together with oil storage chamber 1a, through setting up oiling mouth 9, is convenient for add lubricating oil toward oil storage chamber 1a in, has the comparatively convenient advantage of use.

The oil storage cavity 1a is provided with an annular convex shoulder 1c on the inner side wall, the screw rod 5 penetrates through the annular convex shoulder 1c, the bearing 10 is arranged between the annular convex shoulder 1c and the screw rod 5, the positioning effect on the screw rod 5 is good, the screw rod 5 can smoothly rotate, and meanwhile the oil storage cavity has the advantages of being simple in structure and convenient to install.

The filter screen 11 is arranged in the oil storage cavity 1a, and the filter screen 11 is made of stainless steel materials, so that the oil storage cavity has the advantages of long service life and high structural strength.

During operation, the motor 7 drives the screw rod 5 to rotate, and the screw rod 5 and the screw nut 6 are in threaded transmission due to the fact that the screw nut 6 and the shaft body 1 are circumferentially fixed, so that the screw nut 6 can axially move, the push plate 4 is driven to axially move, the push plate 4 pushes lubricating oil in the oil storage cavity 1a to be conveyed to the outer side wall of the shaft body 1 through the oil feeding channel 1d, and the lubricating oil feeding device has the advantages of being capable of automatically adding lubricating oil and good in lubricating effect. Through the oiling mouth 9 be convenient for add lubricating oil in the oil storage chamber 1a of axis body 1, have the convenient and simple structure's of oiling advantage.

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 cavity 1a, the mounting portion 1b, the annular shoulder 1c, the oil feeding passage 1d, the eccentric block 2, the eccentric shaft 3, the push plate 4, the screw rod 5, the nut 6, the motor 7, the end cover 8, the oil injection nozzle 9, the bearing 10, the filter screen 11, the connecting sleeve, the strip-shaped groove 12a, the pin 13, etc. are used more frequently, 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. Novel crankshaft, including axis body (1), eccentric block (2) and eccentric shaft (3) of setting 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 is used for installing bearing (10), axis body (1) on be equipped with and send oil passageway (1d), send oil passageway (1d) the inner with oil storage chamber (1a) be linked together, oil storage chamber (1a) in be equipped with push pedal (4) that can reciprocating motion, axial has linked firmly lead screw (5) in axis body (1), lead screw (5) on threaded connection have screw (6), screw (6) with axis body (1) circumference link firmly just screw (6) with push pedal (4) link firmly mutually, axis body (1) on be equipped with motor (7) just motor (7) can drive lead screw (6) the eccentric shaft (1) of (5) The shaft body (1) is provided with an end cover (8), and the end cover (8) is positioned on the outer side of the push plate (4).

2. The novel crankshaft according to claim 1, wherein a connecting sleeve is fixedly connected between the screw (6) and the push plate (4), the connecting sleeve (12) and the screw (6) are coaxially arranged, a strip-shaped groove (6a) is formed in the outer side wall of the connecting sleeve (12), the strip-shaped groove (6a) is parallel to the axis of the shaft body (1), a pin (13) penetrates through the shaft body (1), and the inner end of the pin (13) is embedded in the strip-shaped groove (6 a).

3. The novel crankshaft as claimed in claim 1, wherein an oil nozzle (9) is screwed on the shaft body (1), and the inner end of the oil nozzle (9) is communicated with the oil storage cavity (1 a).

4. A new crankshaft according to claim 1, 2 or 3, characterized in that the inner side wall of the oil chamber (1a) is provided with an annular shoulder (1c), the screw (5) passes through the annular shoulder (1c), and a bearing (10) is arranged between the annular shoulder (1c) and the screw (5).

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

6. A new crankshaft according to claim 1, 2 or 3, characterized in that the oil reservoir (1a) is provided with a filter (11).

7. A novel crankshaft according to claim 6, characterized in that the filter screen (11) is made of stainless steel material.