CN209977156U - Built-in piston type crankshaft balance mechanism of engine - Google Patents
Built-in piston type crankshaft balance mechanism of engine Download PDFInfo
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- CN209977156U CN209977156U CN201920574702.9U CN201920574702U CN209977156U CN 209977156 U CN209977156 U CN 209977156U CN 201920574702 U CN201920574702 U CN 201920574702U CN 209977156 U CN209977156 U CN 209977156U
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Abstract
The utility model belongs to the technical field of the engine, especially, relate to a built-in piston bent axle balance mechanism of engine. The utility model discloses, including bent axle and cylinder piston, piston rod one end is connected with the bent axle rotation, and the other end rotates with the cylinder piston to be connected, still including connecting at bent epaxial inertia balance mechanism, and sliding cylinder piston can make inertia balance mechanism slide along the direction opposite with cylinder piston slip direction. The utility model discloses the inertia force that utilizes the inertia balance mechanism who remains reverse motion throughout with cylinder piston comes balanced cylinder piston, simple structure, easily makes, assembles and maintains, and the cost is lower, and, the utility model discloses an inertia balance mechanism mainly comprises balanced piston and balanced connecting rod, need not to use gear or chain, can reduce mechanical loss on the one hand, and on the other hand does not have the noise, and is more quiet.
Description
Technical Field
The utility model belongs to the technical field of the engine, especially, relate to a built-in piston bent axle balance mechanism of engine.
Background
During the working cycle of the engine, because the piston does reciprocating high-speed linear motion in the cylinder, great inertia force is generated, and the crankshaft counterweight can partially balance the inertia force but cannot be completely balanced, so that the engine generates vibration. Most of motorcycle engines are single-cylinder or double-cylinder, and the vibration is large, so that the riding comfort is seriously influenced.
The balance shaft is designed with an eccentric weight, and rotates in opposite phase along with the crankshaft synchronously to generate reverse vibration so as to balance the vibration generated by residual inertia force and reduce the vibration of the engine.
For example, the chinese utility model discloses a horizontal engine built-in balance shaft mechanism for motorcycle [ application number: 201420123874.1], the utility model discloses a including along the bent axle of horizontal direction setting in the engine housing, its improvement lies in: a balance shaft is arranged in the engine shell, and the axial direction of the balance shaft is parallel to the axial direction of the crankshaft; a transmission gear is sleeved on the exposed section of the crankshaft and is fixedly connected with the crankshaft and can synchronously rotate; the end part of the balance shaft is sleeved with a balance gear, the balance gear is fixedly connected with the balance shaft and can synchronously rotate, and the balance gear is meshed with the transmission gear and is in transmission connection with the transmission gear; the balance shaft is characterized in that a balancing weight is arranged in the middle of the balance shaft, and the center of gravity of the balancing weight and the axis of the balance shaft are eccentrically arranged.
The utility model discloses an adopt balance shaft and balancing weight complex mode to reduce the vibration of engine promptly, so it has the more complicated, the higher scheduling problem of manufacturing requirement of above-mentioned structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide the built-in piston bent axle balance mechanism of engine.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the built-in piston type crankshaft balance mechanism of the engine comprises a crankshaft and a cylinder piston, wherein one end of a piston connecting rod is rotatably connected with the crankshaft, the other end of the piston connecting rod is rotatably connected with the cylinder piston, the built-in piston type crankshaft balance mechanism further comprises an inertia balance mechanism connected to the crankshaft, and the sliding cylinder piston can enable the inertia balance mechanism to slide along the direction opposite to the sliding direction of the cylinder piston.
In the above-mentioned internal piston type crankshaft balancing mechanism of the engine, the inertia balancing mechanism includes a balancing piston slidable in a direction opposite to a sliding direction of a piston of the cylinder, and one end of the balancing connecting rod is rotatably connected to the crankshaft and the other end is rotatably connected to the balancing piston.
In the above-mentioned internal piston type crankshaft balancing mechanism of the engine, the balancing piston is slidably connected in a balancing cylinder, and an exhaust port is arranged at one end of the balancing cylinder, which is far away from the crankshaft.
In the above engine built-in piston crankshaft balancing mechanism, the exhaust port has two ports, and the two ports are symmetrically arranged on two sides of the balancing cylinder.
In the above-mentioned internal piston type crankshaft balancing mechanism of the engine, a first hinge point connecting the piston connecting rod and the crankshaft and a second hinge point connecting the balancing connecting rod and the crankshaft are respectively located at two sides of the axial lead of the crankshaft.
In the above engine internal piston type crankshaft balancing mechanism, a connecting line of the first hinge point and the second hinge point intersects with an axial lead of the crankshaft.
In the above engine internal piston type crankshaft balancing mechanism, the distance between the first hinge point and the crankshaft axis is equal to the distance between the second hinge point and the crankshaft axis.
In the internal piston type crankshaft balance mechanism of the engine, one end of the piston connecting rod, which is close to the crankshaft, is provided with a first connecting hole which penetrates through the side surface of the piston connecting rod and has a circular cross section, the crankshaft is provided with a first rotating rod which penetrates through the first connecting hole and is fixedly connected with the crankshaft at two ends, and the first hinge point is positioned on the axis of the first rotating rod; the one end that balanced connecting rod is close to the bent axle has the second connecting hole that link up balanced connecting rod side and transversal personally submitting circularity, be equipped with on the bent axle and link up second connecting hole and both ends all with bent axle fixed connection's second dwang, the second pin joint is located the axis of second dwang.
In the above engine built-in piston crankshaft balance mechanism, the outer surface of the first rotating rod is attached to the inner surface of the first connecting hole, and the outer surface of the second rotating rod is attached to the inner surface of the second connecting hole.
In the internal piston type crankshaft balance mechanism of the engine, the crankshaft is also fixedly connected with two crankshaft balance blocks, and the minimum distances between the two crankshaft balance blocks and the piston connecting rod are equal.
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses utilize the inertia balance mechanism who remains reverse motion throughout with cylinder piston to come balanced cylinder piston's inertial force, simple structure, easily manufacturing, assembly and maintenance, the cost is lower.
2. The utility model discloses an inertia balance mechanism mainly comprises balanced piston and balanced connecting rod, need not to use gear or chain, can reduce mechanical loss on the one hand, and on the other hand does not have the noise, and is more quiet.
3. The utility model discloses it has the gas vent to open on the balance cylinder for the balance cylinder is through structure, and toward the use, the air current can pass the balance cylinder in the balance cylinder, can not produce the compression to the gas in the balance cylinder like this, can not make the interior lubricating oil mist of balance cylinder produce very big pressure fluctuation and cause the scheduling problem that leaks.
Drawings
Fig. 1 is a top view of the present invention;
fig. 2 is a left side view of the present invention;
fig. 3 is an exploded view of the present invention;
in the figure: crankshaft 1, cylinder piston 2, piston connecting rod 3, inertia balance mechanism 4, first hinge point 5, second hinge point 6, first rotating rod 7, second rotating rod 8, crankshaft balance weight 9, first connecting hole 31, balance piston 41, balance connecting rod 42, balance cylinder 43, exhaust port 44 and second connecting hole 45.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the internal piston type crankshaft balance mechanism of the engine comprises a crankshaft 1 and a cylinder piston 2, wherein one end of a piston connecting rod 3 is rotatably connected with the crankshaft 1, the other end of the piston connecting rod is rotatably connected with the cylinder piston 2, the internal piston type crankshaft balance mechanism also comprises an inertia balance mechanism 4 connected with the crankshaft 1, and the inertia balance mechanism 4 can slide along the direction opposite to the sliding direction of the cylinder piston 2 by sliding the cylinder piston 2, wherein the opposite directions can be completely opposite directions or directions formed by superposing completely opposite directions and a vertical direction vector.
The utility model discloses, during the use, cylinder (not drawn in the figure) drives actuating cylinder piston 2 and slides, drives bent axle 1 through piston connecting rod 3 and rotates, and pivot 1 this moment drives inertia balance mechanism 4 and slides along the opposite direction with actuating cylinder piston 2 slip direction, so the utility model discloses utilize the inertia force that comes balanced actuating cylinder piston 2 with actuating cylinder piston 2 inertia balance mechanism 4 that keeps reverse motion all the time, simple structure easily makes, assembles and maintains, and the cost is lower.
As shown in fig. 3, the crankshaft 1 is further fixedly connected with two crankshaft counterbalances 9, the minimum distance between the two crankshaft counterbalances 9 and the piston connecting rod 3 is equal, the crankshaft counterbalances 9 can primarily reduce the inertia force generated by the sliding of the cylinder piston 2, and the rest inertia force is offset by the sliding of the inertia balance mechanism 4.
Referring to fig. 2 and 3, the inertia balance mechanism 4 includes a balance piston 41 capable of sliding along the direction opposite to the sliding direction of the cylinder piston 2, one end of a balance connecting rod 42 is rotatably connected to the crankshaft 1, the other end is rotatably connected to the balance piston 41, the balance piston 41 is slidably connected to a balance cylinder 43, and after the rotation of the rotating shaft 1, the motion is transmitted to the balance piston 41 through the balance connecting rod 42, so that the balance piston 41 slides in the balance cylinder 43, therefore, the inertia balance mechanism 4 of the present invention mainly comprises the balance piston 41 and the balance connecting rod 42, without using gears or chains, on one hand, the mechanical loss can be reduced, and on the other hand, no noise and quietness can be achieved.
Preferably, the one end that bent axle 1 was kept away from to balancing cylinder 43 is equipped with gas vent 44, the utility model discloses it has gas vent 44 to open on balancing cylinder 43 for balancing cylinder 43 is through-type structure, and in the past use, the air current can pass balancing cylinder 43 in balancing cylinder 43, can not produce the compression to gas in balancing cylinder 43 like this, can not make the interior lubricating oil mist of balancing cylinder 43 produce very big pressure fluctuation and cause the scheduling problem of leaking.
It is further preferable that the exhaust ports 44 have two and are symmetrically disposed at both sides of the balancing cylinder 43, so that the gas is symmetrically exhausted from the two exhaust ports 44, and the generated inertia forces can exactly cancel each other.
Referring to fig. 1 and 3, a first hinge point 5 connecting the piston connecting rod 3 and the crankshaft 1 and a second hinge point 6 connecting the balance connecting rod 42 and the crankshaft 1 are respectively located at two sides of an axial lead of the crankshaft 1, and a connecting line of the first hinge point 5 and the second hinge point 6 intersects with the axial lead of the crankshaft 1, that is, a rotational phase difference between the first hinge point 5 and the second hinge point 6 is exactly 180 degrees, so that the balance piston 41 does not generate inertia force in other directions after offsetting the original inertia force, thereby reducing the vibration degree of the engine to the minimum.
Preferably, the distance between the first hinge point 5 and the axis of the crankshaft 1 is equal to the distance between the second hinge point 6 and the axis of the crankshaft 1, so that the mass required for determining the balance piston 41 can be calculated, and the manufacturing process and the assembly maintenance are more convenient, simple and easy.
Referring to fig. 1 and 3, one end of the piston rod 3 close to the crankshaft 1 is provided with a first connection hole 31 which penetrates through a side surface of the piston rod 3 and has a circular cross section, the crankshaft 1 is provided with a first rotation rod 7 which penetrates through the first connection hole 31 and has two ends fixedly connected with the crankshaft 1, and the first hinge point 5 is located on an axis of the first rotation rod 7, that is, the piston rod 3 is sleeved on the first rotation rod 7 through the first connection hole 31, so as to realize transmission between the cylinder piston 2 and the crankshaft 1; balance connecting rod 42 is close to the one end of bent axle 1 and has the second connecting hole 45 that link up balance connecting rod 42 side and transversal personally submit the circular shape, be equipped with on bent axle 1 and link up second connecting hole 45 and both ends all with bent axle 1 fixed connection's second dwang 8, second pin joint 6 is located the axis of second dwang 8, and balance connecting rod 42 overlaps through second connecting hole 45 promptly and establishes on second dwang 8, realizes the transmission between bent axle 1 and the balanced piston 41.
Preferably, the outer surface of the first rotating rod 7 is attached to the inner surface of the first connecting hole 31, and the outer surface of the second rotating rod 8 is attached to the inner surface of the second connecting hole 45, so that the stability in the relative rotating process can be ensured, and radial displacement disturbance cannot be generated.
The utility model discloses a theory of operation is: during the use, the cylinder drives the slip of cylinder piston 2, cylinder piston 2 promotes piston rod 3, piston rod 3 promotes first dwang 7 through first connecting hole 31, thereby it rotates to drive bent axle 1, pivot 1 drives second connecting hole 45 through second dwang 8 this moment, thereby drive balanced connecting rod 42, balanced connecting rod 42 promotes balanced piston 41 and slides along the direction opposite with cylinder piston 2 slip direction in balanced jar 43, because the cylinder drives cylinder piston 2 and is reciprocating motion, so balanced piston 41 is reciprocating motion on opposite direction, the air current that balanced piston 41 produced in reciprocating motion is discharged from gas vent 44, so the utility model discloses utilize the inertia balance mechanism 4 who keeps reverse motion with cylinder piston 2 all the time to balance cylinder piston 2's inertial force, simple structure, easily make, assembly and maintenance, the cost is lower.
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 crankshaft 1, cylinder piston 2, piston connecting rod 3, inertia balance mechanism 4, first hinge point 5, second hinge point 6, first rotating rod 7, second rotating rod 8, crankshaft balance weight 9, first connecting hole 31, balance piston 41, balance connecting rod 42, balance cylinder 43, exhaust port 44, second connecting hole 45, 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 (10)
1. The utility model provides a built-in piston bent axle balance mechanism of engine, includes bent axle (1) and cylinder piston (2), and piston rod (3) one end is rotated with bent axle (1) and is connected, and the other end rotates with cylinder piston (2) to be connected its characterized in that: the crankshaft type engine also comprises an inertia balance mechanism (4) connected to the crankshaft (1), and the sliding cylinder piston (2) can enable the inertia balance mechanism (4) to slide along the direction opposite to the sliding direction of the cylinder piston (2).
2. The engine built-in piston crankshaft balancing mechanism of claim 1, wherein: the inertia balance mechanism (4) comprises a balance piston (41) capable of sliding along the direction opposite to the sliding direction of the cylinder piston (2), one end of a balance connecting rod (42) is rotatably connected with the crankshaft (1), and the other end of the balance connecting rod is rotatably connected with the balance piston (41).
3. The engine built-in piston crankshaft balancing mechanism of claim 2, wherein: the balance piston (41) is connected in a balance cylinder (43) in a sliding mode, and an exhaust port (44) is formed in one end, far away from the crankshaft (1), of the balance cylinder (43).
4. The engine built-in piston crankshaft balancing mechanism of claim 3, wherein: the exhaust ports (44) are provided with two and are symmetrically arranged on two sides of the balance cylinder (43).
5. The engine built-in piston crankshaft balancing mechanism of claim 2, wherein: a first hinge point (5) for connecting the piston connecting rod (3) and the crankshaft (1) and a second hinge point (6) for connecting the balance connecting rod (42) and the crankshaft (1) are respectively positioned at two sides of the axial lead of the crankshaft (1).
6. The engine built-in piston crankshaft balancing mechanism of claim 5, wherein: and a connecting line of the first hinge point (5) and the second hinge point (6) is intersected with the axis of the crankshaft (1).
7. The engine built-in piston crankshaft balancing mechanism of claim 5, wherein: the distance between the first hinge point (5) and the axis of the crankshaft (1) is equal to the distance between the second hinge point (6) and the axis of the crankshaft (1).
8. The engine built-in piston crankshaft balancing mechanism of claim 5, wherein: one end, close to the crankshaft (1), of the piston connecting rod (3) is provided with a first connecting hole (31) which penetrates through the side face of the piston connecting rod (3) and is circular in cross section, the crankshaft (1) is provided with a first rotating rod (7) which penetrates through the first connecting hole (31) and is fixedly connected with the crankshaft (1) at two ends, and the first hinge point (5) is located on the axis of the first rotating rod (7); one end that balanced connecting rod (42) are close to bent axle (1) has the second connecting hole (45) that link up balanced connecting rod (42) side and transversal personally submit circular shape, be equipped with on bent axle (1) and link up second connecting hole (45) and both ends all with bent axle (1) fixed connection's second dwang (8), second pin joint (6) are located the axis of second dwang (8).
9. The engine built-in piston crankshaft balancing mechanism of claim 8, wherein: the surface of first dwang (7) is laminated with the internal surface of first connecting hole (31) mutually, the surface of second dwang (8) is laminated with the internal surface of second connecting hole (45) mutually.
10. The engine built-in piston crankshaft balancing mechanism of claim 1, wherein: the crankshaft (1) is also fixedly connected with two crankshaft balance blocks (9), and the minimum distance between the two crankshaft balance blocks (9) and the piston connecting rod (3) is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920574702.9U CN209977156U (en) | 2019-04-25 | 2019-04-25 | Built-in piston type crankshaft balance mechanism of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920574702.9U CN209977156U (en) | 2019-04-25 | 2019-04-25 | Built-in piston type crankshaft balance mechanism of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209977156U true CN209977156U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920574702.9U Active CN209977156U (en) | 2019-04-25 | 2019-04-25 | Built-in piston type crankshaft balance mechanism of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209977156U (en) |
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- 2019-04-25 CN CN201920574702.9U patent/CN209977156U/en active Active
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