CN215719337U - Reciprocating mass counterweight adjusting structure, compressor and engine - Google Patents
Reciprocating mass counterweight adjusting structure, compressor and engine Download PDFInfo
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- CN215719337U CN215719337U CN202121515446.XU CN202121515446U CN215719337U CN 215719337 U CN215719337 U CN 215719337U CN 202121515446 U CN202121515446 U CN 202121515446U CN 215719337 U CN215719337 U CN 215719337U
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Abstract
The utility model provides a reciprocating mass counterweight adjusting structure, which comprises a connecting pin and a mass adjusting block, wherein the connecting pin is connected with the mass adjusting block; the connecting pin is of a cavity structure, K mass adjusting blocks are arranged in the cavity of the connecting pin, and K is a positive integer; the cavity of the connecting pin is internally provided with a first connecting part, the number of the first connecting parts is K, the quality adjusting block is provided with a second connecting part matched with the first connecting part, and the quality adjusting block is matched with the second connecting part through the first connecting part and the second connecting part and is detachably and fixedly connected with the connecting pin. The number of the mass adjusting blocks can be increased or reduced rapidly in the connecting pin so as to realize the effect of safe, convenient and balanced matching of reciprocating mass, the adjustment is convenient and flexible, the safety is high, and the application is wide. The utility model also provides a compressor and an engine, which comprise the reciprocating mass counterweight adjusting structure.
Description
Technical Field
The utility model relates to the field of compressors and engines, in particular to a reciprocating mass balance weight adjusting structure, a compressor and an engine.
Background
In practical application, because the strengthening degree of the engine and the compressor is continuously improved, the rotating speed, the average effective pressure and the average speed of the piston are greatly improved compared with the prior art, the thermal load and the mechanical load of the engine are increased, and the internal structures of the engine and the compressor are required to be improved and improved in order to meet the social emission standard. The reciprocating mass balance weight adjusting scheme adopted by the engine and the compressor is as follows: the reciprocating quality is not adjusted; when the piston is processed, the piston or the crosshead body is processed according to different weights; counterweight nuts with different masses are arranged on the joint with the crosshead; connecting pins of different masses are provided. The problems of abnormal pressure, large vibration, abnormal sound, insufficient exhaust amount and the like of the reciprocating machine can be caused without adjusting the reciprocating mass. For example, chinese patent publication No. CN10895318B discloses a sectional compressor piston counterweight device, which achieves the purpose of reciprocating mass balance by changing the mass of the piston.
However, if the piston or the crosshead body is processed according to different weights, the counterweight nuts with different weights are arranged, or the connecting pins with different weights are arranged, the problems of increased production management difficulty, increased inventory cost and large workload of installation and replacement are caused by processing of larger parts with different weights.
To this end, there is a need for a reciprocating mass counterweight adjustment structure, compressor, and engine that address the above issues.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reciprocating mass counterweight adjusting structure, a compressor and an engine, which can determine the number of mass adjusting blocks placed in a connecting pin according to the total mass of a counterweight so as to achieve the effect of safe, convenient and balanced reciprocating mass.
In a first aspect, to achieve the above object, the present invention provides a reciprocating mass balance weight adjusting structure, including a connecting pin and a mass adjusting block.
The connecting pin is of a cavity structure, K mass adjusting blocks are arranged in the cavity of the connecting pin, and K is a positive integer.
Be equipped with first connecting portion in the cavity of connecting pin, and K be equipped with on the quality control piece outside with in the connecting pin cavity the second connecting portion of first connecting portion looks adaptation.
The quality adjusting block is matched with the connecting pin through the first connecting part and the second connecting part to be detachably and fixedly connected with the connecting pin.
The reciprocating mass counterweight adjusting structure has the beneficial effects that: k mass adjusting blocks are arranged in the cavity of the connecting pin by adopting the cavity structure of the connecting pin, K is a positive integer, a first connecting part is arranged in the cavity of the connecting pin, and second connecting parts matched with the first connecting parts in the cavity of the connecting pin are arranged outside the K quality adjusting blocks, the quality adjusting block is matched with the connecting pin through the first connecting part and the second connecting part to realize detachable fixed connection, when it is necessary to determine the number of mass-adjusting blocks to be placed in the connecting pin according to the total mass of the set balance weight, the number of the mass adjusting blocks can be rapidly increased or reduced to realize the effect of safe, convenient and balanced matching of reciprocating mass, meanwhile, the connecting pin does not need to be frequently changed in production management of practical application, and the investment cost is reduced to a great extent.
In a possible implementation, the first connection portion is a continuous whole or is divided into a plurality of discontinuous sub-connection portions, which has the following advantages: the number of mass adjustment blocks placed in the connecting pin for a piston or crosshead is determined by the total mass of the set counterweight in the connecting pin.
In one possible implementation, the number K of the mass adjusting blocks is greater than or equal to 2. The beneficial effects are that: compared with the prior art that the piston or the crosshead body is processed according to different weights, the counterweight nuts with different masses are arranged on the joint with the crosshead and the connecting pins with different masses are arranged, the structure is simple to assemble and convenient to operate, the resource waste is reduced, the number K of the mass adjusting blocks is more than or equal to 2, and the balance inside the reciprocating mass counterweight adjusting structure can be improved.
In one possible implementation, the reciprocating mass balance weight adjusting structure further comprises a retainer ring, wherein a retainer ring groove is formed in the opening end of the connecting pin, and the retainer ring is arranged in the retainer ring groove. The beneficial effects are that: the check ring can be used for preventing the mass adjusting block from falling off, so that the reciprocating mass counterweight adjusting structure is firmer, and the working efficiency of the reciprocating mass counterweight adjusting structure is improved.
In one possible implementation, the mass adjusting block further comprises an installation part, and the installation part is provided with a slot or a through hole matched with an installation tool. The beneficial effects are that: the design of installation department is convenient for quality control piece installation and dismantlement.
In one possible implementation, the first connection portion includes at least one of a first thread, a first magnet, and a first snap, and the second connection portion includes at least one of a second thread, a second magnet, and a second snap. The beneficial effects are that: the first connecting portion with the second connecting portion set up the connected mode of many looks adaptations, can satisfy the application demand to the product under the different scenes.
In one possible implementation, the reciprocating mass balance weight adjusting structure, the first connecting portion is an internal thread, the internal thread is arranged on the inner wall of the connecting pin, the second connecting portion is an external thread, the external thread is arranged on the outer wall of the mass adjusting block, and the internal thread is matched with the external thread. The beneficial effects are that: threaded connection mode is simple, and is convenient, is convenient for pass through fixed connection can be dismantled to first connecting portion and second connecting portion the quality control piece with the connecting pin, firm in connection moreover, the security is high.
In one possible implementation, the ratio of the axial length of the mass adjustment block to the axial length of the connecting pin is less than one-half. The beneficial effects of the device are that, the rationality of design is guaranteed, so that the retainer ring can be placed when the number K of the quality adjusting blocks is more than or equal to 2.
In one possible implementation, the mass adjusting block is any one of a metal mass adjusting block, a ceramic mass adjusting block and a polymer mass adjusting block. The counterweight connecting pin has the beneficial effects that the mass adjusting blocks made of different materials have different densities, so that the required sizes are different under the same total counterweight mass, and the materials of the mass adjusting blocks can be selected according to the actual space in the cavity of the connecting pin.
In some possible implementations, the reciprocating mass counterweight adjustment structure further includes at least one of a piston and a crosshead, the connecting pin being connected to at least one of the piston and the crosshead. The beneficial effects are that: the piston and the crosshead are common mechanical structures that connect the connecting pin to at least one of the piston and the crosshead, increasing the versatility of applicability of the connecting pin.
In a second aspect, the present invention provides a compressor comprising a reciprocating mass counterweight adjustment structure according to any one of the possible designs of the first aspect described above.
The compressor has the beneficial effects that: when the number of the mass adjusting blocks placed in the connecting pin is determined according to the total mass of the balance weight, the number of the mass adjusting blocks can be rapidly increased or reduced to realize the effect of safe, convenient and balanced matching of reciprocating mass, and the problems of insufficient air displacement, abnormal temperature, abnormal pressure and abnormal sound of the compressor caused by unreasonable balance weight can be solved.
In a third aspect, the present invention provides an engine comprising a reciprocating mass counterweight adjustment structure for any one of the possible design prizes of the first aspect.
The engine has the advantages that: the exhaust volume is an important parameter index for engine power, the insufficient exhaust volume is a common fault of an engine, when the number of mass adjusting blocks placed in the connecting pin is determined according to the total mass of the balance weight, the number of the mass adjusting blocks can be increased or decreased rapidly to achieve the effect of safe and convenient matching balance of reciprocating mass, and the problem of faults caused by the insufficient exhaust volume can be solved.
Drawings
FIG. 1 is a schematic structural view of a connecting pin according to an embodiment of the present invention;
FIG. 2 is a perspective view of a mass adjustment block in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a reciprocating mass counterweight adjustment structure in an embodiment of the utility model;
FIG. 4 is a side view of the reciprocating mass counterweight adjustment structure shown in FIG. 3;
the reference numerals in figures 1 to 4 are respectively: 100-connecting pins; 101-a first connection; 102-a retainer groove; 103-open end; 200-mass adjusting block; 201-a second connection portion; 202-a mounting portion; 301-a collar.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but 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. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
The utility model provides a connecting pin structure, taking the connecting pin structure shown in fig. 1 as an example, the connecting pin 100 is a cavity structure, and the connecting pin 100 comprises: a first connection portion 101, a retainer groove 102, and an open end 103.
The first connecting portion 101 is located in the cavity of the connecting pin 100, and the first connecting portion is a continuous whole or is divided into a plurality of discontinuous sub-connecting portions for detachably and fixedly connecting the connecting pin 100 and the second connecting portion of the mass adjusting block.
The retainer groove 102 is located at the open end 103 within the cavity of the connector pin 100.
The open end 103 is a cavity structure of the connecting pin 100, so it is necessary to provide the open end 103, and the mass adjusting block is mounted and dismounted in the cavity of the connecting pin 100 through the open end 103.
The first connection portion 101 includes at least one of a first thread, a first magnet, and a first snap.
The utility model provides a mass adjusting block structure, taking the mass adjusting block structure shown in fig. 2 as an example, the mass adjusting block 200 comprises: a second connection portion 201 and a mounting portion 202. The mass adjusting block 200 shown in fig. 2 is a cylinder, the second connecting portion 201 is an external thread, and the mounting portion 202 is a hexagon, which is a typical structure of the mass adjusting block.
Second connecting portion 201 set up in the outer wall of quality control piece 200, with in the cavity of connecting pin 100 first connecting portion 101 looks adaptation is convenient for realize quality control piece 200 with connecting pin 100 can dismantle fixed connection.
The second connection portion 201 includes at least one of a second screw, a second magnet, and a second snap.
The mounting portion 202 is located inside the mass adjusting block 200, so that the mass adjusting block 200 can be mounted and dismounted in the connecting pin 100.
In some embodiments of the present invention, the mounting portion 202 is provided with a slot or through hole that is compatible with a mounting tool. Illustratively, the mounting portion 202 of the mass adjusting block 200 shown in fig. 2 is a structure in which an end surface is provided with a hexagonal shape.
For example, the mounting portion 202 of the mass adjusting block may be provided with a square shape, a rectangular shape, or the like, which is adapted to a mounting tool.
In some embodiments of the present invention, the mass adjusting block 200 is any one of a metal mass adjusting block, a ceramic mass adjusting block, and a polymer mass adjusting block.
In some embodiments of the utility model, the mass adjusting block 200 is a metal mass adjusting block, and is any one of an aluminum alloy mass adjusting block, a steel mass adjusting block and a lead mass adjusting block, under an environment of 20 degrees celsius, the aluminum alloy has a density of 2.72 to 2.82 grams per cubic centimeter (for convenience of calculation, the aluminum alloy has a density of 2.7 grams per cubic centimeter), the steel has a density of 7.9 grams per cubic centimeter, the lead has a density of 11.3 grams per cubic centimeter, if the total mass of the counterweight to be adjusted is 1000 grams, the required aluminum alloy has a volume of 1.11 cubic decimeters, the required steel has a volume of 0.39 cubic decimeter, and the required lead has a volume of 0.27 cubic decimeter, when the internal dimension of the connecting pin is determined, the installation and disassembly of the mass adjusting block are facilitated, the mass adjusting block of a material with a proper size can be selected, wherein the calculation results of the volume are the results after rounding.
Based on the connecting pin shown in fig. 1 and the mass adjusting block shown in fig. 2, the utility model provides a reciprocating mass balance weight adjusting structure, taking the reciprocating mass balance weight adjusting structure shown in fig. 3 and 4 as an example, which comprises a connecting pin 100 and a mass adjusting block 200; the connecting pin 100 is of a cavity structure, and K mass adjusting blocks 200 are arranged in the cavity of the connecting pin 100, wherein K is a positive integer; be equipped with first connecting portion 101 in the cavity of connecting pin 100, just be equipped with on the quality control piece 200 with the second connecting portion 201 of first connecting portion 101 looks adaptation, quality control piece 200 passes through first connecting portion 101 with second connecting portion 201 looks adaptation with connecting pin 100 realizes dismantling fixed connection.
In some embodiments of the present invention, the reciprocating mass adjusting structure further comprises a retainer ring 301, the retainer ring groove 102 is located in the cavity of the connecting pin 100, and is used for preventing the mass adjusting block 200 placed in the cavity of the connecting pin 100 from falling off.
Illustratively, the retainer ring 301 may be a standard type circlip for a hole having a hole diameter of 8 to 100. In practical applications, the retainer ring 301 may be selected to have a suitable size according to the actual dimensions of the inside of the connecting pin 100. For example, when the outer ring radius of the connecting pin 100 is 100 and the inner ring radius is 80, the outer ring radius of the retainer ring 301 should be selected to be greater than 80 and less than 100 so that the retainer ring can be placed in the retainer ring groove 102, wherein the radius units of the outer ring radius of the connecting pin 100 and the inner ring radius of the retainer ring 301 are uniform.
The first connecting portion 101 and the second connecting portion 201 are arranged in the cavity of the connecting pin 100 and matched to realize the detachable fixed connection of the connecting pin 100 and the K mass adjusting blocks 200, wherein K is a positive integer. The number K of the mass adjusting blocks 200 is determined according to the total mass of the required counterweight and the unit mass of the mass adjusting blocks 200, and generally, in order to ensure balance, the number K of the mass adjusting blocks 200 is greater than or equal to 2.
For example, if the total mass of the counterweight required is 3 kg, and the number K of the mass adjusting blocks 200 is 2 or more, the unit mass of the mass adjusting block 200 used should be 1.5 kg or less, and for convenience of calculation, taking the unit mass of the mass adjusting block 200 used as 0.75 kg as an example, the number of the mass adjusting blocks 200 having the unit mass of 0.75 kg required to be installed in the connecting pin 100 is 4.
In some embodiments of the utility model, the first connection portion includes at least one of a first thread, a first magnet, and a first snap, and the second connection portion includes at least one of a second thread, a second magnet, and a second snap.
In some embodiments of the utility model, the first connecting portion is an internal thread, the internal thread is disposed on an inner wall of the connecting pin, the second connecting portion is an external thread, the external thread is disposed on an outer wall of the mass adjusting block, the internal thread is matched with the external thread, and the connecting pin and the mass adjusting block are detachably and fixedly connected through the matching of the internal thread and the external thread.
In other embodiments of the present invention, the first connecting portion is a magnet, the magnet is disposed on an inner wall of the connecting pin, the second connecting portion is a ferromagnetic substance magnetically adsorbed to the magnet, the ferromagnetic substance is disposed on an outer wall of the mass adjusting block, and the magnet is adapted to the ferromagnetic substance magnetically adsorbed to the magnet; or the second connecting portion are magnet, magnet set up in the outer wall of quality control piece, first connecting portion be with the ferromagnetic substance of magnet magnetism adsorption, ferromagnetic substance set up in the inner wall of connecting pin, magnet with the ferromagnetic substance looks adaptation of magnet magnetism adsorption. The connecting pin and the mass adjusting block are matched with each other through the magnet and the ferromagnetic substance to realize detachable fixed connection.
In still other embodiments of the present invention, the first connecting portion is a clamping groove, the clamping groove is located on an inner wall of the connecting pin, the second connecting portion is a clamping block, the clamping block is disposed on an outer wall of the mass adjusting block, and the clamping groove is matched with the clamping block; or the first connecting part is a clamping block, the clamping block is positioned on the inner wall of the connecting pin, the second connecting part is a clamping groove, the clamping groove is formed in the outer wall of the mass adjusting block, and the clamping groove is matched with the clamping block. The connecting pin and the quality adjusting block are matched with each other through the clamping groove and the clamping block to realize detachable fixed connection.
In some embodiments of the present invention, in the reciprocating mass balance weight adjusting structure, the ratio of the axial length of the mass adjusting blocks 200 to the axial length of the connecting pin 100 is less than one-half, so as to ensure that the number K of mass adjusting blocks which can be installed is greater than or equal to 2.
In some embodiments of the utility model, the reciprocating mass weight adjustment structure further comprises at least one of a piston and a crosshead, the connecting pin being connected to at least one of the piston and the crosshead.
The utility model provides a compressor comprising a reciprocating mass counterweight adjusting structure as described in any one of the above.
The utility model provides an engine comprising a reciprocating mass counterweight adjustment structure as described in any one of the above.
Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the utility model as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.
Claims (11)
1. A reciprocating mass counterweight adjusting structure is characterized by comprising a connecting pin and a mass adjusting block;
the connecting pin is of a cavity structure, and K mass adjusting blocks are arranged in the cavity of the connecting pin, wherein K is a positive integer;
a first connecting part is arranged in the cavity of the connecting pin, and a second connecting part matched with the first connecting part is arranged on the quality adjusting block;
the quality adjusting block is matched with the connecting pin through the first connecting part and the second connecting part to be detachably and fixedly connected with the connecting pin.
2. The reciprocating mass counterweight adjustment structure of claim 1 wherein K is greater than or equal to 2.
3. The reciprocating mass counterweight adjustment structure of claim 1 further comprising a retainer ring, wherein the open end of the connecting pin is provided with a retainer ring groove, and the retainer ring is disposed in the retainer ring groove.
4. The reciprocating mass counterweight adjustment structure of claim 1 wherein the mass adjustment block further comprises a mounting portion, said mounting portion being provided with a slot or through hole adapted to a mounting tool.
5. The reciprocating mass counterweight adjustment structure of claim 1 wherein said first connection portion comprises at least one of a first thread, a first magnet, and a first snap, and said second connection portion comprises at least one of a second thread, a second magnet, and a second snap.
6. The reciprocating mass counterweight adjusting structure of claim 1, wherein the first connecting portion is an internal thread, the internal thread is disposed on an inner wall of the connecting pin, the second connecting portion is an external thread, the external thread is disposed on an outer wall of the mass adjusting block, and the internal thread and the external thread are matched.
7. The reciprocating mass counterweight adjustment structure of claim 1 wherein the ratio of the axial length of the mass adjustment block to the axial length of the connecting pin is less than one-half.
8. The reciprocating mass counterweight adjustment structure of claim 1 wherein said mass adjustment block is any one of a metal mass adjustment block, a ceramic mass adjustment block, and a high molecular mass adjustment block.
9. The reciprocating mass weight adjustment arrangement of claim 1, further comprising at least one of a piston and a crosshead, the connecting pin being connected to at least one of the piston and the crosshead.
10. A compressor comprising the reciprocating mass counterweight adjustment structure of any one of claims 1 to 9.
11. An engine comprising a reciprocating mass counterweight adjustment arrangement as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121515446.XU CN215719337U (en) | 2021-07-05 | 2021-07-05 | Reciprocating mass counterweight adjusting structure, compressor and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121515446.XU CN215719337U (en) | 2021-07-05 | 2021-07-05 | Reciprocating mass counterweight adjusting structure, compressor and engine |
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| Publication Number | Publication Date |
|---|---|
| CN215719337U true CN215719337U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121515446.XU Active CN215719337U (en) | 2021-07-05 | 2021-07-05 | Reciprocating mass counterweight adjusting structure, compressor and engine |
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| Country | Link |
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| CN (1) | CN215719337U (en) |
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- 2021-07-05 CN CN202121515446.XU patent/CN215719337U/en active Active
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