CN209892333U - Modularized balance shaft and oil pan with same - Google Patents
Modularized balance shaft and oil pan with same Download PDFInfo
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- CN209892333U CN209892333U CN201920476205.5U CN201920476205U CN209892333U CN 209892333 U CN209892333 U CN 209892333U CN 201920476205 U CN201920476205 U CN 201920476205U CN 209892333 U CN209892333 U CN 209892333U
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- balance shaft
- balance
- weight
- shaft body
- modular
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Abstract
The utility model relates to a modularized balance shaft, which comprises a balance shaft body and at least one high-density balancing weight, wherein the balance shaft body is provided with at least one protruding balancing weight, and the surface of the balancing weight is provided with a fixing hole; the balancing weight is fixed in the fixing hole. And also relates to an oil pan with a modular balance shaft. The beneficial effects of the utility model are that can realize balanced axle miniaturization, meticulous modularization. Meanwhile, the test and installation can be convenient.
Description
Technical Field
The utility model relates to an engine manufacturing field especially relates to balanced axle of engine and oil pan.
Background
Along with the continuous improvement of the performance of the three-cylinder engine, the balance shaft is more and more widely applied, and the balance shaft of the current three-cylinder engine mainly has two structures, namely a split structure which is assembled on a cylinder body; and the oil pan is modular, is assembled in the oil pan and is generally integrated with the oil pump. With the demand for downsizing, low weight, and high performance of the engine, higher demands are made on the performance of the balance shaft. The existing balance shaft occupies a large space and cannot meet the miniaturization requirement of an engine; meanwhile, with the improvement of performance, the torsional vibration of the crankshaft is larger and larger, and the NVH of the balance shaft cannot meet the NVH requirement of the engine. In addition, when the balance shaft is installed on the oil pan, the oil stirring of the balance shaft is not limited, so that the foaming property of the engine oil is serious, and the service life of the engine oil and the lubrication of an engine are influenced.
In the prior art, an automobile engine balance shaft assembly with application number CN201820032528.0 comprises a housing, a driving balance shaft and a driven balance shaft arranged in the housing, wherein the driving balance shaft is provided with a driving balance shaft counterweight part, and the right end part of the driving balance shaft is connected with a driving gear in a matching way; the driven balance shaft is provided with a driven balance shaft counterweight part, and the right end part of the driven balance shaft is connected with a driven gear in a matching way; the driving gear and the driven gear are correspondingly meshed. The vibration damping device can counteract partial vibration of the engine, thereby achieving a good vibration damping effect and improving the NVH quality of the engine and the whole vehicle; the positioning accuracy during assembly can be ensured, and misassembly is avoided; high strength and rigidity and long service life. But the whole structure form determines that the structure has no improvement room of modularization and miniaturization.
A modular counterweight device with application number CN201810031481.0 convenient to adjust in the prior art includes an annular mounting base, a plurality of fixed beams, a plurality of first counterweights and a plurality of second counterweights; the plurality of fixed beams are arranged on the inner ring surface of the mounting base along the axis direction of the mounting base, and are uniformly distributed along the circumferential direction of the mounting base; the first balancing weights are attached to the rear end face of the mounting base along the circumferential direction of the mounting base, and a fixed beam is arranged between any two adjacent first balancing weights; a second balancing weight is arranged on the rear end face of any one first balancing weight. Although the modularized concept of the balance weight is disclosed, the modularized structure is huge, and the technical effects of modularized customized balance weight and miniaturization of the balance shaft are difficult to realize.
Application number is CN 200610157332.6's a balanced axle system of automobile engine among the prior art, including balance shaft, bent axle sprocket and chain, balance shaft is last to be provided with preceding balancing piece, back balancing piece and balance shaft drive gear, and bent axle sprocket is installed on the bent axle main journal, characterized by: the chain drives an oil pump through an oil pump chain wheel and drives a balance shaft through a pair of oil pump transmission gears and balance shaft transmission gears in an engaged manner; the engine oil pump further comprises a balance shaft support, wherein the balance shaft support is connected with and bears the balance shaft and the oil pump, and the balance shaft support is connected to the engine frame. The rear balance weight is formed by connecting two pieces of materials with different specific gravities. Also, although the modularized concept of the balance weight is disclosed, the modularized structure is huge, and the technical effects of modularized customized balance weight and miniaturization of the balance shaft are difficult to realize.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, when solving balanced axle miniaturization, modular, promote the aspect performance of balanced axle.
In order to achieve the purpose, the invention provides a modularized balance shaft, which comprises a balance shaft body and at least one high-density balancing weight, wherein the balance shaft body is provided with at least one protruding balancing weight, and the surface of the balancing weight is provided with a fixing hole; the balancing weight is fixed in the fixing hole.
The balance shaft body can be arranged to be in a long rod shape according to requirements during actual design. The balancing weight of high density can select common and have the different material solids of certain hardness, such as materials such as metal copper, tungsten, high carbon steel to can avoid deviating from of balancing weight, also be convenient for the planning of counter weight. The balance block can be integrated with the balance shaft body or fixed with the balance shaft body, and no relative rotation between the balance shaft body and the balance block is ensured. The fixing hole, namely the hole structure for fixing, is used for accommodating and fixing part or all of the balancing weight.
Preferably, the fixed orifices are clamping holes, and the bottom end of the balancing weight is provided with a buckle corresponding to the clamping holes.
The clamping hole is matched with the buckle to form mutual fixation between the clamping hole and the buckle.
Preferably, the fixing hole is a self-locking threaded hole; the balancing weight is cylindrical, and the side wall of the balancing weight is provided with external threads corresponding to the fixing holes.
The self-locking threaded hole is matched with the external thread to form mutual fixation between the self-locking threaded hole and the external thread. The side wall here refers to the side of the weight.
Preferably, a matching cover is fixed on the balance block, the balance block and the matching cover are combined to form a disc shape, and the axis of the disc shape is coaxial with the axis of the balance shaft body.
The disc-like structure in conventional wisdom has a thickness in addition to having circular opposing faces; may be considered a shorter cylindrical structure. The balance weights referred to herein may be all of the balance weights or some of the balance weights.
Preferably, the balance weight further comprises a bolt for fixing the balance weight; a through hole is formed in the axis position of the disc; the tail end of the balance shaft body is provided with a threaded hole; the bolt penetrates through the through hole and the threaded hole, and the head of the bolt is abutted against the balance block or the matching cover or the combination of the balance block and the matching cover to form the fixation of the balance block and the balance shaft body.
The disk-shaped balance weight is a structure formed by combining a balance weight and a cover. The tail end of the balance shaft body is selected according to the actual design, and can be a single end head or two end heads can be designed into the structure. The balance weight or the matching cover or the combination of the balance weight and the matching cover, namely the balance weight and/or the matching cover. The principle of bolt fixing is that the balance weight and/or the matching cover are/is pressed onto the balance shaft body through the head of the bolt.
Preferably, the balance weight or the matching cover or the combination surface of the balance weight and the matching cover is provided with a groove for reducing weight.
The balance weight or the matching cover or the combination of the balance weight and the matching cover, namely the balance weight and/or the matching cover.
Preferably, the side surface of the shaft body of the balance shaft body is provided with a digging groove for balancing weight.
The oil pan with the modularized balance shaft comprises an oil pan shell and the modularized balance shaft, wherein a pore passage for the balance shaft body to penetrate and be installed is formed in the oil pan shell; a stop block I and a stop block II are arranged on the side face of the rod body of the balance shaft body, the stop block I abuts against one end of the pore channel, and the stop block II abuts against the other end of the pore channel.
One end of the pore channel forms a front thrust surface, the other end of the pore channel forms a rear thrust surface, and the pore channel is matched with the stop block I and the stop block II, so that the balance shaft body only keeps the freedom degree of rotation in the oil pan shell.
Preferably, the block II is a weight.
The counterbalance is urged against one end of the passage to form a thrust surface on which a lubricating structure may be applied.
The modularization balance shaft realizes the fine adjustment of the balance weight of the balance shaft by arranging the balance block and a balancing weight fixing structure on the balance block.
The clamping of balancing weight sets up and makes things convenient for the balancing weight firmly, accurately to be positioned in the fixed orifices, and it is convenient to install.
The self-locking threaded connection of the balancing weight is convenient for the balancing weight to be firmly and telescopically positioned in the fixing hole, and the testing and the specific installation and adjustment are convenient.
The disklike that the cooperation of joining in marriage lid and balancing piece formed has avoided the card that rotatory too big resistance of balance shaft leads to in the oil pan to pause, has restricted the oil stirring by a wide margin of balancing piece. The volume of the contact oil is reduced, thereby reducing the influence of oil foaming.
The balance block is fixed at the end part of the balance shaft body through the bolt, so that the operation is convenient and fast; the test balance blocks can be conveniently replaced during testing.
The side of the rod body is provided with the digging groove for balancing weight, so that the cross section of the rod body becomes a special-shaped structure, the outer diameter of the balancing block of the balancing shaft can be reduced, the balancing efficiency of the balancing shaft is further improved, and the occupied space of the balancing block is reduced. The design turning radius of the balance block can be reduced by about 10% by arranging the balance block and the rod body in a special-shaped structure at the same time.
The oil pan with the modularized balance shaft is arranged, modularization of the oil pan is improved, oil stirring prevention capacity is improved, and overall testing and assembling are facilitated. Axial displacement is controlled through the thrust structure, loss is reduced, accordingly NVH performance of the balance shaft is improved, and stability is improved.
Set up dog II into the balancing piece, reduce the setting of mounting in the oil pan, promote space utilization efficiency.
The beneficial effects of the utility model are that can realize balanced axle miniaturization, meticulous modularization. Meanwhile, the test and installation can be convenient.
Drawings
Fig. 1 is a schematic view of the assembly of the modular balance shaft of the present invention;
fig. 2 is a schematic cross-sectional view of a balance shaft body of the modular balance shaft of the present invention;
fig. 3 is an overall schematic view of an oil pan with a modularized balance shaft according to the present invention;
fig. 4 is a schematic cross-sectional view of an oil pan with a modular balance shaft according to the present invention;
wherein:
1-balance shaft body 11-balance block 111-fixing hole
12-matching cover 121-groove 13-threaded hole
14-groove 151-stop I152-stop II
2-counterweight block 3-bolt 4-oil pan shell
41-channel
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
The modularized balance shaft shown in fig. 1 comprises a balance shaft body 1 and at least one high-density balancing weight 2, wherein at least one protruding balancing weight 11 is arranged on the balance shaft body 1, and a fixing hole 111 is formed in the surface of the balancing weight 11; the balancing weight 2 is fixed in the fixing hole 111.
The fixing hole 111 can be a clamping hole, and a buckle (not shown in the figure) corresponding to the clamping hole is arranged at the bottom end of the balancing weight 2; the fixing hole 111 can also be a self-locking threaded hole; the counterweight block 2 is cylindrical, and the side wall thereof is provided with external threads (not shown in the figure) corresponding to the fixing holes.
A matching cover 12 is fixed on the balance weight 11, the balance weight 11 and the matching cover 12 are combined to form a disc shape, and the axis of the disc shape is coaxial with the axis of the balance shaft body 1.
The bolt 3 is used for fixing the balance weight; the disc-shaped axis is provided with a through hole (not shown in the figure); the tail end of the balance shaft body is provided with a threaded hole 13; the bolt 3 penetrates into the through hole and the threaded hole 13, and the head of the bolt is abutted against the balance block and the matching cover to form the fixation of the balance block 11 and the balance shaft body 1. When in actual installation, the bolt head can also form the fixation (not shown in the figure) of the balance weight 11 and the balance shaft body 1 by abutting against the balance weight or matching cover according to the requirement.
The surface of the matching cover 12 is provided with a groove 121 for reducing weight. In practical design, the groove 121 may also be disposed on the balance weight 11 or a combination surface of the balance weight and the matching cover (not shown in the figure).
According to the modular balance shaft shown in fig. 1 to 2, a digging groove 14 for counterweight is formed in the shaft body side surface of the balance shaft body 1.
The oil pan with the modular balance shaft shown in fig. 3 to 4 comprises an oil pan shell 4 and the modular balance shaft, wherein a hole 41 for the balance shaft body 1 to penetrate through is formed in the oil pan shell 4; a stop block I151 and a stop block II152 are arranged on the side face of the shaft body of the balance shaft body 1, the stop block I151 abuts against one end of the hole 41, and the stop block II152 abuts against the other end of the hole 41. The stop II152 is a weight 11.
The oil pan shell 4 is also provided with an oil stirring protective cover at the position where the balance block 11 is arranged, and a small airtight space is formed with the oil pan shell 4 to reduce the influence of the oil stirring area of the balance block on the whole, so that the influence of oil stirring of a balance shaft is reduced.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, and that various changes and modifications may be made, which are within the scope of the appended claims.
Claims (9)
1. A modularized balance shaft comprises a balance shaft body and is characterized by also comprising at least one high-density balancing weight, wherein the balance shaft body is provided with at least one protruding balancing weight, and the surface of the balancing weight is provided with a fixing hole; the balancing weight is fixed in the fixing hole.
2. The modular balance shaft according to claim 1, wherein the fixing hole is a clamping hole, and a buckle corresponding to the clamping hole is arranged at the bottom end of the counterweight block.
3. The modular balance shaft of claim 1 wherein the securing holes are self-locking threaded holes; the balancing weight is cylindrical, and the side wall of the balancing weight is provided with external threads corresponding to the fixing holes.
4. The modular balance shaft of claim 1, wherein a matching cover is fixed on the balance weight, the balance weight and the matching cover form a disc shape in combination, and the axis of the disc shape is coaxial with the axis of the balance shaft body.
5. The modular balance shaft of claim 4, further comprising a bolt for securing a balance weight; a through hole is formed in the axis position of the disc; the tail end of the balance shaft body is provided with a threaded hole; the bolt penetrates through the through hole and the threaded hole, and the head of the bolt is abutted against the balance block or the matching cover or the combination of the balance block and the matching cover to form the fixation of the balance block and the balance shaft body.
6. The modular balance shaft of claim 4, wherein the balance weight or the mating cover or the combined surface of the balance weight and the mating cover is provided with a groove for weight reduction.
7. The modular balance shaft of claim 1, wherein a side surface of the shaft body of the balance shaft body is provided with a groove for a counterweight.
8. An oil pan with a modular balance shaft, which comprises an oil pan shell and is characterized by further comprising the modular balance shaft according to any one of claims 1 to 7, wherein a pore passage for the balance shaft body to penetrate and be installed is formed in the oil pan shell; a stop block I and a stop block II are arranged on the side face of the rod body of the balance shaft body, the stop block I abuts against one end of the pore channel, and the stop block II abuts against the other end of the pore channel.
9. The sump of claim 8, wherein the stop II is a counterweight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920476205.5U CN209892333U (en) | 2019-04-10 | 2019-04-10 | Modularized balance shaft and oil pan with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920476205.5U CN209892333U (en) | 2019-04-10 | 2019-04-10 | Modularized balance shaft and oil pan with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209892333U true CN209892333U (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920476205.5U Active CN209892333U (en) | 2019-04-10 | 2019-04-10 | Modularized balance shaft and oil pan with same |
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| Country | Link |
|---|---|
| CN (1) | CN209892333U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396170A (en) * | 2020-03-23 | 2020-07-10 | 潍柴动力股份有限公司 | Oil suction device and engine |
| CN111967108A (en) * | 2020-08-28 | 2020-11-20 | 广西玉柴机器股份有限公司 | Design method and system for modular oil pan of engine |
-
2019
- 2019-04-10 CN CN201920476205.5U patent/CN209892333U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396170A (en) * | 2020-03-23 | 2020-07-10 | 潍柴动力股份有限公司 | Oil suction device and engine |
| CN111396170B (en) * | 2020-03-23 | 2021-05-18 | 潍柴动力股份有限公司 | Oil suction device and engine |
| CN111967108A (en) * | 2020-08-28 | 2020-11-20 | 广西玉柴机器股份有限公司 | Design method and system for modular oil pan of engine |
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