CN217328282U - Two-cylinder engine balance mechanism - Google Patents
Two-cylinder engine balance mechanism Download PDFInfo
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- CN217328282U CN217328282U CN202220920193.2U CN202220920193U CN217328282U CN 217328282 U CN217328282 U CN 217328282U CN 202220920193 U CN202220920193 U CN 202220920193U CN 217328282 U CN217328282 U CN 217328282U
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- balance
- connecting rod
- balanced
- piston
- crankshaft
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Abstract
The utility model discloses a two-cylinder engine balance mechanism, which comprises a crankshaft, wherein two working connecting rod journals are arranged on the crankshaft, a working connecting rod is movably arranged at the top of each working connecting rod journal, two pistons are fixedly arranged at the top ends of the working connecting rods, a balance weight piston is arranged at the bottom of the crankshaft, a balance weight piston connecting pin is arranged at the bottom of the balance weight piston, two crankshaft balance weights are arranged at the bottom of the crankshaft, a balance weight piston guide sleeve is arranged at the top of the balance weight piston, a balance bracket is jointly arranged at the left side of the balance weight piston guide sleeve and the left side of the balance weight piston, and the balance bracket, the balance weight piston, the crankshaft balance weight and the like are matched for use, so that the two-cylinder engine balance mechanism can balance first-order moment and second-order moment of an engine and can completely balance first-order inertia force of the engine, further make the utility model discloses can obviously reduce the vibration of in-line two jar engines.
Description
Technical Field
The utility model relates to an engine balance control technical field specifically is a two jar engine balance mechanism.
Background
The in-line two-cylinder engine is an engine with two cylinders, and is formed from two identical single cylinders which are arranged on a machine body and share a crankshaft to output power. If the balance mechanism is not matched, vibration and overturning moment can be generated in the working process of the engine, and the comfort and the use durability are reduced.
In order to reduce the influence of reciprocating inertia force and reciprocating inertia moment on the vibration of the engine in the operation process of the traditional four-stroke two-cylinder engine, a double-shaft balance system is generally adopted to balance first-order force (first-order moment), or a set of double-shaft balance system is additionally adopted to balance second-order force (second-order moment). Because the internal space of the crankcase of the in-line two-cylinder engine is limited, if the design difficulty of a balancing mechanism such as single-shaft or double-shaft balancing is quite large, a two-cylinder engine balancing mechanism is provided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem lie in overcoming prior art's defect, provide a two jar engine balance mechanism.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a two jar engine balance mechanism, includes the bent axle, install two work connecting rod journals on the bent axle, work connecting rod journal top movable mounting has the work connecting rod, two the equal fixed mounting in work connecting rod top has the piston, the bent axle bottom is equipped with balanced heavy piston, balanced heavy piston bottom is equipped with balanced heavy piston hookup pin, two bent axle balancing weights are installed to the bent axle bottom, balanced heavy piston top is equipped with balanced heavy piston uide bushing, balanced heavy piston uide bushing left side and balanced piston left side are equipped with balanced bracket jointly, balanced piston has balanced connecting rod through balanced heavy piston hookup pin swing joint, balanced piston uide bushing inner chamber is equipped with balanced connecting rod journal, balanced connecting rod journal center is installed at balanced connecting rod journal top, balanced connecting rod journal center and the laminating of bent axle bottom, the right end of the crankshaft is movably connected with a flywheel.
Preferably, the two working connecting rod journals are positioned on the same side of the crankshaft, and the balance connecting rod journal is positioned on the other side of the crankshaft.
Preferably, a balance bracket fixing bolt is arranged at the top of the balance bracket, and the balance bracket is fixed with the crankshaft through the balance bracket fixing bolt.
Preferably, the working connecting rod and the balance connecting rod are both connected to the outer side of the crankshaft in a journal mode.
Preferably, the working connecting rod journal radius and the balance connecting rod journal radius are equal.
Preferably, the two pistons are arranged in a left-right symmetrical manner by taking the central axis of the crankshaft as a symmetrical axis.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a be provided with the cooperation between a series of parts such as balanced bracket, balanced heavy piston and bent axle balancing piece and use, make the utility model discloses can realize both balancing engine first-order moment and second order moment, can balance the first-order inertia force of engine again completely, further make the utility model discloses can obviously reduce the vibration of in-line two jar engines.
Drawings
FIG. 1 is a schematic view of an in-line two-cylinder engine balance mechanism of the present invention;
fig. 2 is a partial schematic view of the in-line two-cylinder engine balance mechanism of the present invention.
Reference numbers in the figures: 1. a piston; 2. a working link; 3. a balance bracket fixing bolt; 4. a crankshaft; 5. a counterweight piston guide sleeve; 6. a balance bracket; 7. a counter weight piston; 8. a flywheel; 9. a counterweight piston coupling pin; 10. a balance link journal; 11. the center of the journal of the balance connecting rod; 12. a crankshaft counterbalance; 13. a working link journal.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a two-cylinder engine balance mechanism comprises a crankshaft 4, two working connecting rod shaft necks 13 are installed on the crankshaft 4, working connecting rods 2 are movably installed at the tops of the working connecting rod shaft necks 13, pistons 1 are fixedly installed at the top ends of the two working connecting rods 2, the two pistons 1 are symmetrically arranged in a left-right mode by taking the central axis of the crankshaft 4 as a symmetry axis, the pistons 1 are stably installed through the arrangement, a balance weight piston 7 is arranged at the bottom of the crankshaft 4, a balance weight piston connecting pin 9 is arranged at the bottom of the balance weight piston 7, two crankshaft balance weights 12 are installed at the bottom of the crankshaft 4, a balance weight piston guide sleeve 5 is arranged at the top of the balance weight piston 7, a balance bracket 6 is jointly arranged on the left side of the balance weight piston guide sleeve 5 and the left side of the balance weight piston 7, a balance bracket fixing bolt 3 is arranged at the top of the balance bracket 6, and the crankshaft 4 are fixed through the balance bracket fixing bolt 3, make balance bracket 6 job stabilization through this setting, balance weight piston 7 has balanced connecting rod through balance weight piston connecting pin 9 swing joint, 5 inner chambers of balance weight piston uide bushing are equipped with balanced connecting rod journal 10, two work connecting rod journals 13 are located 4 homonymies of bent axle, balanced connecting rod journal 10 is located 4 opposite sides of bent axle, avoid balanced connecting rod journal 10 and work connecting rod journal 13 during operation to disturb through this setting, work connecting rod 2 all connects in the bent axle 4 outside with balanced connecting rod journal 10, work connecting rod journal 13 radius and balanced connecting rod journal 10 radius are for equal setting, balanced connecting rod journal center 11 is installed at balanced connecting rod journal 10 top, balanced connecting rod journal center 11 and bent axle 4 bottom laminating, bent axle 4 right-hand member swing joint has flywheel 8.
The working principle is as follows: when the engine works, the crankshaft 4 is driven to rotate, the crankshaft 4 drives the balance weight piston 7, the balance weight piston guide sleeve 5 and other parts to synchronously move, one end of the balance connecting rod moves around a balance connecting rod shaft neck 10, the other end of the balance connecting rod moves around a balance weight piston connecting pin 9, the balance connecting rod drives the balance weight piston 7 to move, the balance weight piston 7 reciprocates along the balance weight piston guide sleeve 5, the balance of first-order moment and second-order moment of the engine is realized, the first-order inertia force of the engine can be completely balanced, and the vibration of the two-cylinder engine can be obviously reduced.
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 invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A two-cylinder engine balance mechanism, includes bent axle (4), its characterized in that: install two work connecting rod journal (13) on bent axle (4), work connecting rod journal (13) top movable mounting has work connecting rod (2), two equal fixed mounting in work connecting rod (2) top has piston (1), bent axle (4) bottom is equipped with balanced heavy piston (7), balanced heavy piston (7) bottom is equipped with balanced heavy piston hookup pin (9), two bent axle balancing pieces (12) are installed to bent axle (4) bottom, balanced heavy piston (7) top is equipped with balanced heavy piston uide bushing (5), balanced heavy piston uide bushing (5) left side is equipped with balanced bracket (6) with balanced piston (7) left side jointly, balanced heavy piston (7) have balanced connecting rod through balanced heavy piston hookup pin (9) swing joint, balanced piston uide bushing (5) inner chamber is equipped with balanced connecting rod journal (10), balance connecting rod journal center (11) are installed at balance connecting rod journal (10) top, balance connecting rod journal center (11) and bent axle (4) bottom laminating, bent axle (4) right-hand member swing joint has flywheel (8).
2. A two-cylinder engine balancing mechanism according to claim 1, characterized in that: the two working connecting rod journals (13) are positioned on the same side of the crankshaft (4), and the balance connecting rod journal (10) is positioned on the other side of the crankshaft (4).
3. A two-cylinder engine balancing mechanism according to claim 1, characterized in that: balance bracket fixing bolt (3) are equipped with at balance bracket (6) top, balance bracket (6) are fixed with bent axle (4) through balance bracket fixing bolt (3).
4. A two-cylinder engine balancing mechanism according to claim 1, characterized in that: the working connecting rod (2) and the balance connecting rod journal (10) are connected to the outer side of the crankshaft (4).
5. A two-cylinder engine balancing mechanism according to claim 1, characterized in that: the radius of the working connecting rod journal (13) is equal to that of the balance connecting rod journal (10).
6. A two-cylinder engine balancing mechanism according to claim 1, characterized in that: the two pistons (1) are arranged in a bilateral symmetry mode by taking the central axis of the crankshaft (4) as a symmetry axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220920193.2U CN217328282U (en) | 2022-04-21 | 2022-04-21 | Two-cylinder engine balance mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220920193.2U CN217328282U (en) | 2022-04-21 | 2022-04-21 | Two-cylinder engine balance mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217328282U true CN217328282U (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220920193.2U Active CN217328282U (en) | 2022-04-21 | 2022-04-21 | Two-cylinder engine balance mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217328282U (en) |
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2022
- 2022-04-21 CN CN202220920193.2U patent/CN217328282U/en active Active
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