CN115539205A - Diesel engine with external balance block - Google Patents
Diesel engine with external balance block Download PDFInfo
- Publication number
- CN115539205A CN115539205A CN202211149427.9A CN202211149427A CN115539205A CN 115539205 A CN115539205 A CN 115539205A CN 202211149427 A CN202211149427 A CN 202211149427A CN 115539205 A CN115539205 A CN 115539205A
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- CN
- China
- Prior art keywords
- balance
- diesel engine
- block
- balance block
- balance shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/06—Engines with means for equalising torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to the technical field of diesel engines, in particular to an external balance block diesel engine, which provides a diesel engine capable of manually adjusting the balance performance between a crankshaft and a balance shaft, improves the operation reliability of the diesel engine and improves the comfort feeling of people to the working diesel engine.
Description
Technical Field
The invention relates to the technical field of diesel engines, in particular to a diesel engine with an external balance block.
Background
The single-cylinder air-cooled diesel engine is limited by the structure of the single-cylinder air-cooled diesel engine, and the reciprocating balance and the rotating balance generated in the operation process of the diesel engine are difficult to realize only by the weight of the crankshaft fan-shaped block, so a balance shaft needs to be added for assistance in the structure to realize the complete balance of the whole engine; the crankshaft drives the balance shaft through a pair of meshed gears, the rotation directions of the crankshaft and the balance shaft are opposite but the acting force directions are the same, the reciprocating inertia force and the rotating inertia force generated in the operation process of the diesel engine are counteracted by the eccentric moment of the crankshaft and the eccentric moment of the balance shaft together, the existing single-cylinder air-cooled diesel engine with the structure or another single-cylinder air-cooled diesel engine with the similar structure has an obvious defect, and due to the limitation of the existing production and processing technology, the masses of the crankshaft fan-shaped block and the balance shaft fan-shaped block are uneven, so that the problem that the diesel engine vibrates abnormally during working is directly caused, and the adjustment cannot be carried out.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the diesel engine can artificially adjust the balance performance between the crankshaft and the balance shaft, improve the operation reliability of the diesel engine and improve the comfort feeling of people to the working diesel engine.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an external balancing piece diesel engine, has organism, bent axle and balance shaft, the last fan-shaped piece that has an organic whole and set up of balance shaft, the holding hole to balance shaft one end bearing on the organism is step-like through-hole, and the step face in holding hole keeps off on the outer terminal surface of bearing inner race, the balance shaft has the outer installation section that stretches out from this holding hole, install the outer balancing piece of eccentric form on the outer installation section, be equipped with the closing cap of lid on holding hole, outer installation section and outer balancing piece on the organism.
Specifically, in order to reduce the occupation of the sector blocks on the internal space of the machine body, on the basis of reducing the mass of the sector blocks, the eccentric direction of the outer balance block is consistent with the eccentric direction of the sector blocks on the balance shaft, and the outer balance block compensates the deficiency of the eccentric force of the sector blocks.
In one particular arrangement, the outer balance weight is keyed to the outer mounting section.
Specifically, the outer balance weight is fixed in an anti-falling mode through a bolt and a check ring at the end of the outer mounting section.
Specifically, a sealing gasket is arranged between the sealing cover and the machine body.
The invention has the beneficial effects that: the diesel engine with the external balance block extends the balance shaft out of the engine body, and the balance block is added outside the engine body, so that the diesel engine with the external balance block has the advantages that: 1. the balance blocks are replaceable, and when the diesel engine is tested, the balance blocks with different eccentric weights and/or eccentric directions can be selected, so that the diesel engine has better balance performance, and vibration and noise are reduced; 2. and one part of the occupied space of the balance block is transferred from the inside of the machine body to the outside of the machine body, so that the structural design of the inner cavity of the machine body is facilitated.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is an exploded view of the body member and balance shaft member of the present invention;
fig. 2 is a schematic axial cross-sectional view of the balance shaft of the present invention in assembled relation.
In the figure, 1, a machine body, 1-1, a support hole, 2, a balance shaft, 2-1, a fan-shaped block, 2-2, an outer installation section, 3, an outer balance block, 4, a sealing cover, 5, a bolt, 6, a retainer ring, 7, a sealing gasket, 8 and a key are arranged.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams each illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention.
An external balance block diesel engine is disclosed, as shown in an exploded structure of a drawing 1 and a partial section structure of a drawing 2, and comprises an engine body 1, a crankshaft and a balance shaft 2, wherein a fan-shaped block 2-1 is integrally arranged on the balance shaft 2, a support hole 1-1 of the engine body 1 for a bearing at one end of the balance shaft 2 is a step-shaped through hole, the step surface of the support hole 1-1 is blocked on the outer end surface of the outer ring of the bearing, the balance shaft 2 is provided with an external installation section 2-2 extending from the support hole 1-1, the external installation section 2-2 is provided with an eccentric external balance block 3, and the engine body 1 is provided with a sealing cover 4 covering the support hole 1-1, the external installation section 2-2 and the external balance block 3; the eccentric direction of the outer balance block 3 is consistent with the eccentric direction of the fan-shaped block 2-1 on the balance shaft 2; the outer balance block 3 is connected with the outer mounting section 2-2 in a key way, the key connection structure is that corresponding key grooves are arranged on the outer balance block 3 and the outer mounting section 2-2, keys are arranged in the key grooves, and the key connection structure can be in another spline connection mode; the outer balance block 3 is fixed in an anti-falling way by a bolt 5 and a check ring 6 at the end part of the outer mounting section 2-2; a sealing gasket 7 is arranged between the sealing cover 4 and the machine body 1.
When the structure of the invention is realized, a plurality of external balance blocks 3 with series sizes are required to be manufactured in advance, different external balance blocks 3 are respectively marked, trial run is started from the external balance block 3 with the middle specification in trial run, if the external balance block 3 with larger mass is replaced for the second time, if vibration is intensified, the external balance block 3 with smaller mass than the first time is replaced, if vibration is reduced, but when adjustment is required, the external balance block 3 with larger mass is replaced; if the outer balance weight 3 with smaller mass is used for the second time, the operation can be performed according to the reverse idea.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides an external balancing piece diesel engine, has organism (1), bent axle and balance shaft (2), fan-shaped piece (2-1) that have an organic whole setting on balance shaft (2), characterized by: the bearing balance mechanism is characterized in that a supporting hole (1-1) of a bearing at one end of a balance shaft (2) on the machine body (1) is a step-shaped through hole, the step surface of the supporting hole (1-1) is blocked on the outer end surface of a bearing outer ring, the balance shaft (2) is provided with an outer mounting section (2-2) extending out of the supporting hole (1-1), an eccentric outer balance block (3) is mounted on the outer mounting section (2-2), and a sealing cover (4) covering the supporting hole (1-1), the outer mounting section (2-2) and the outer balance block (3) is arranged on the machine body (1).
2. The externally counterbalanced diesel engine of claim 1, wherein: the eccentric direction of the outer balance block (3) is consistent with the eccentric direction of the fan-shaped block (2-1) on the balance shaft (2).
3. The externally counterbalanced diesel engine of claim 1, wherein: the outer balance block (3) is in key connection with the outer mounting section (2-2).
4. The externally counterbalanced diesel engine of claim 3, wherein: the outer balance block (3) is fixed in an anti-falling mode through a bolt (5) and a check ring (6) at the end of the outer mounting section (2-2).
5. The externally counterbalanced diesel engine of claim 1, wherein: a sealing gasket (7) is arranged between the sealing cover (4) and the machine body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211149427.9A CN115539205A (en) | 2022-09-21 | 2022-09-21 | Diesel engine with external balance block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211149427.9A CN115539205A (en) | 2022-09-21 | 2022-09-21 | Diesel engine with external balance block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115539205A true CN115539205A (en) | 2022-12-30 |
Family
ID=84728056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211149427.9A Pending CN115539205A (en) | 2022-09-21 | 2022-09-21 | Diesel engine with external balance block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115539205A (en) |
-
2022
- 2022-09-21 CN CN202211149427.9A patent/CN115539205A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |