CN104088961A - Balance shaft apparatus with variable installation phase, and installation method - Google Patents
Balance shaft apparatus with variable installation phase, and installation method Download PDFInfo
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- CN104088961A CN104088961A CN201410299146.0A CN201410299146A CN104088961A CN 104088961 A CN104088961 A CN 104088961A CN 201410299146 A CN201410299146 A CN 201410299146A CN 104088961 A CN104088961 A CN 104088961A
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- 238000009434 installation Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 47
- 238000005192 partition Methods 0.000 claims description 22
- 230000005484 gravity Effects 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005056 compaction Methods 0.000 abstract 4
- 239000003921 oil Substances 0.000 description 18
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a balance shaft apparatus with a variable installation phase, and an installation method, which relate to the technical field of balance shafts, and aim at solving the technical problem of low timing installation accuracy for the balance shafts. The balance shaft apparatus with the variable installation phase comprises a fixed frame capable of being fixed on an engine cylinder, and a compaction mechanism arranged on the fixed frame, wherein the compaction mechanism comprises a drive apparatus fixedly installed on the fixed frame, and a compaction rod in transmission connection with the drive apparatus, and one end of the compaction rod is dead against one end of a balance shaft on the engine cylinder, and capable of being jacked at one end of the balance shaft under the drive of the drive apparatus to fix the balance shaft. The installation method for the balance shaft apparatus with the variable installation phase comprises the step of fixing the balance shaft by virtue of the balance shaft apparatus with the variable installation phase, so as to finish timing installation for the balance shaft. The balance shaft apparatus with the variable installation phase and the installation method provided by the invention are used for improving the timing installation accuracy for the balance shaft, thus ensuring the balance effect of the balance shaft.
Description
Technical Field
The invention relates to the technical field of balance shafts, in particular to a balance shaft device with a variable installation phase and an installation method.
Background
The balance shaft is a shaft which is provided with a balance block (an eccentric weight block) and synchronously rotates along with the crankshaft, and the directional vibration force generated by the balance block is utilized to balance the second-order reciprocating inertia force and the overturning moment of the engine, so that the vibration and the noise of the engine are reduced, and the driving comfort is improved. In the existing engine, two balance shafts and a crankshaft are respectively arranged at set positions of an engine cylinder body, two driven chain wheels which are respectively and fixedly arranged on the two balance shafts and a driving chain wheel which is fixedly arranged on the crankshaft are in transmission connection through chains, and the two balance shafts are driven to synchronously rotate through the chains when the crankshaft rotates.
In order to ensure the balance effect of the balance shaft, strict requirements on the timing phase angle are required between the balance shaft and the crankshaft, and if the deviation of the timing phase angle is large, the balance effect of the balance shaft is affected. At present, in order to make the timing phase angle between the balance shaft and the crankshaft meet the design requirements, corresponding timing marks are usually marked on the set position of the balance shaft when the balance shaft is manufactured, and then the timing marks on the balance shaft are aligned with the timing marks on the crankshaft when the balance shaft is assembled. Specifically, firstly, a balance shaft blank is cast and molded, then timing mark points of the balance shaft are punched on the balance shaft blank according to a casting rough reference of the balance shaft, then a driven sprocket is assembled on the balance shaft in a timing mode through an assembling tool, then the balance shaft provided with the driven sprocket is installed on an engine cylinder body, finally the driven sprocket on the balance shaft is in transmission connection with a driving sprocket on a crankshaft through a chain, and the timing mark points of the chain are required to be installed in alignment with timing marks on the driven sprocket.
However, the inventors of the present application have found that the above-described assembly process has at least the following errors: firstly, a balance shaft blank has casting errors, so that the gravity center of the balance shaft determined by the casting rough reference of the balance shaft can deviate from the actual gravity center of the balance shaft, and the timing mark point on the balance shaft deviates from the actual timing mark point; secondly, when the driven sprocket is pressed on the balance shaft through the assembly tool, the timing mark on the driven sprocket cannot be completely aligned with the timing mark of the balance shaft due to the error of tool assembly; and thirdly, a timing phase angle error between the balance shaft and the crankshaft caused by tensioning of the tensioner after the chain is installed on a driven chain wheel on the balance shaft and a driving chain wheel on the crankshaft. All the errors are accumulated to cause poor timing installation precision of the balance shaft (the deviation range can reach +/-15 degrees), namely, the timing phase angle between the balance shaft and the crankshaft has deviation, and therefore the balance effect of the balance shaft is influenced.
Disclosure of Invention
The invention aims to provide a balance shaft device with a variable installation phase and an installation method, which are used for improving the timing installation precision of a balance shaft so as to ensure the balance effect of the balance shaft.
In order to achieve the above purpose, the invention provides the following technical scheme:
a variable installation phasing balance shaft assembly comprising:
the fixing frame can be fixed on the engine cylinder body;
locate hold-down mechanism on the mount, hold-down mechanism includes: the engine cylinder body is fixedly arranged on the engine cylinder body, the driving device is fixedly arranged on the fixed frame, the pressing rod is in transmission connection with the driving device, one end of the pressing rod is opposite to one end of the balance shaft arranged on the engine cylinder body, and the pressing rod can be pressed against one end of the balance shaft under the driving of the driving device so as to fix the balance shaft.
Preferably, the drive means is a hydraulic drive means comprising: the hydraulic cylinder is fixedly arranged on the fixed frame, the partition plate is slidably arranged in the hydraulic cylinder and divides the internal space of the hydraulic cylinder into two parts, and the partition plate is fixedly connected with one end of the compression rod, which is back to the balance shaft; wherein,
the hydraulic cylinder is provided with an oil inlet, an oil outlet and a through hole for the compression rod to pass through, and the oil inlet and the oil outlet are respectively positioned on two sides of the partition plate.
Preferably, at least two stop blocks are fixedly arranged in the hydraulic cylinder, and the at least two stop blocks are respectively positioned on two sides of the partition plate.
Preferably, the cross section of the through hole is rectangular, and the cross section of the corresponding pressing rod is also rectangular; and/or the cross section of the inner space of the hydraulic cylinder is rectangular, and the corresponding partition plate is also rectangular.
Preferably, a pressing disc is arranged at one end, opposite to the balance shaft, of the pressing rod, and the cross section area of the pressing disc is larger than that of the pressing rod.
Preferably, the fixing frame is a triangular fixing frame, and three top points of the triangular fixing frame are respectively provided with a fixing pin.
The invention also provides an installation method of the balance shaft device with variable installation phases, which comprises the following steps:
rotating the crankshaft to enable the piston in the engine cylinder body to be positioned at the top dead center or the bottom dead center, and then fixing the crankshaft;
mounting a balance shaft with a balance block on an engine cylinder body, wherein the balance shaft automatically adjusts the balance position under the action of the gravity of the balance block;
the integrated chain wheel and the integrated chain are sleeved on any one of the balance shaft devices with variable installation phases provided by the technical scheme, and the balance shaft device with variable installation phases comprises: the mount with locate hold-down mechanism on the mount, wherein, hold-down mechanism includes: the engine cylinder body comprises a fixed frame, a driving device fixedly arranged on the fixed frame and a pressing rod in transmission connection with the driving device, wherein one end of the pressing rod is opposite to one end of a balance shaft arranged on the engine cylinder body; the integrated sprocket comprises: the driven chain wheel can be sleeved on the balance shaft, and the chuck is fixedly connected with the driven chain wheel and can fix the driven chain wheel on the balance shaft;
after the balance shaft is in static balance, fixing the fixed frame on an engine cylinder body, and enabling one end of the compression rod to be pressed against one end of the balance shaft through the driving device to fix the balance shaft;
sleeving the integrated chain wheel on a balance shaft but not fixing the integrated chain wheel, so that the integrated chain wheel can rotate relative to the balance shaft;
mounting the chain on the driven sprocket and a drive sprocket of the crankshaft to drivingly connect the driven sprocket and the drive sprocket;
fixedly mounting a tensioner on an engine block and tensioning the chain with the tensioner;
locking and fixing the chuck on a balance shaft so that the driven chain wheel is fixed on the balance shaft;
and releasing the fixation of the crankshaft and the balance shaft, and removing the fixed frame from the engine cylinder block to finish the timing installation of the balance shaft.
Preferably, the crankshaft is fixed by the variable mounting phase balance shaft device.
When the balance shaft device with the variable installation phase is used for installing the balance shaft in a timing mode, firstly, the crankshaft is rotated to enable the engine piston to be located at the top dead center or the bottom dead center, and the crankshaft is fixed; then, a balance shaft without a driven chain wheel is arranged on the engine cylinder body, and the balance shaft automatically adjusts the balance position under the action of gravity generated by a balance block; then, a balance shaft which is arranged on the engine cylinder body and is not provided with a driven chain wheel is fixed through a driving device and a pressing rod on the fixed frame so as to prevent the balance shaft from rotating; then, sleeving an integrated chain wheel comprising a chuck and a driven chain wheel on the balance shaft without fixing, installing a chain on the driven chain wheel and a driving chain wheel of the crankshaft, and tensioning the chain through a tensioner; and then the driven chain wheel is fixed on the balance shaft by the locking chuck, the crankshaft and the balance shaft are released from being fixed, and the fixed frame is removed, so that the timing installation of the balance shaft is completed.
According to the scheme, in the timing installation process of the balance shaft, the position of the balance shaft reaching static balance under the action of the gravity of the balance block is used as the timing position of the balance shaft, and the position of the crankshaft corresponding to the position of the piston at the top dead center or the bottom dead center is used as the timing position of the crankshaft.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a balance shaft device with variable installation phases according to an embodiment of the present invention;
FIG. 2 is a schematic view of the drive mechanism and hold down bar of FIG. 1;
FIG. 3 is a flow chart of a method for installing a variable installation phase balance shaft assembly according to an embodiment of the present invention;
FIG. 4 is a timing mounting assembly for the balance shaft;
FIG. 5 is a schematic structural view of the integrated sprocket of FIG. 4;
FIG. 6 is a schematic structural view of the balance shaft of FIG. 4;
fig. 7 is a schematic structural view of the bearing shell in fig. 4.
Reference numerals:
10-a fixed frame, 11-a fixed pin,
20-a driving device, 21-a hydraulic cylinder,
22-a clapboard, 23-an oil inlet,
24-an oil outlet, 25-a stop block,
30-a pressing rod, 31-a pressing disk,
40-balance shaft, 41-driven chain wheel,
42-chuck, 43-journal,
44-second shoulder, 45-first shoulder,
46-a bearing bush, 47-an oil storage tank,
48-oil filling port, 50-chain,
60-tensioner.
Detailed Description
In order to further explain the balance shaft device with variable installation phase and the installation method provided by the embodiment of the invention, the following detailed description is made in conjunction with the attached drawings of the specification.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1 and 2, a balance shaft device with variable installation phases according to an embodiment of the present invention includes: the engine comprises a fixed frame 10 which can be fixed on an engine cylinder body and a pressing mechanism which is arranged on the fixed frame 10; wherein, hold-down mechanism includes: the engine comprises a driving device 20 fixedly arranged on a fixed frame 10 and a pressing rod 30 in transmission connection with the driving device 20, wherein one end of the pressing rod 30 is opposite to one end of a balance shaft arranged on an engine cylinder body, and can be pressed against one end of the balance shaft under the driving of the driving device 20 to fix the balance shaft.
When the balance shaft device with the variable installation phase is used for installing the balance shaft in a timing mode, firstly, the crankshaft is rotated to enable the engine piston to be positioned at the top dead center or the bottom dead center, and the crankshaft is fixed; then, a balance shaft without a driven chain wheel is arranged on the engine cylinder body, and the balance shaft automatically adjusts the balance position under the action of gravity generated by a balance block; then, the balance shaft which is arranged on the engine cylinder body and is not provided with the driven chain wheel is fixed through the driving device 20 and the pressing rod 30 on the fixed frame 10 so as to prevent the balance shaft from rotating; then, sleeving an integrated chain wheel comprising a chuck and a driven chain wheel on the balance shaft without fixing, installing a chain on the driven chain wheel and a driving chain wheel of the crankshaft, and tensioning the chain through a tensioner; and then the driven chain wheel is fixed on the balance shaft by the locking chuck, the fixing of the crankshaft and the balance shaft is released, and the fixed frame 10 is removed, so that the timing installation of the balance shaft is completed.
According to the scheme, in the timing installation process of the balance shaft, the position of the balance shaft reaching static balance under the action of the gravity of the balance block is used as the timing position of the balance shaft, and the position of the crankshaft corresponding to the position of the piston at the top dead center or the bottom dead center is used as the timing position of the crankshaft.
In addition, the timing mark of the balance shaft is not required to be marked, so that the timing mark on the balance shaft is reduced, and the timing mark between the balance shaft and the driven sprocket and the timing mark between the balance shaft and the crankshaft are not required to be aligned when the balance shaft is installed in timing, so that the timing installation efficiency of the balance shaft can be improved, and the timing installation cost of the balance shaft can be reduced.
In specific implementation, the fixing frame 10 may be a rectangular fixing frame, a triangular fixing frame or other polygonal fixing frames, and in a preferred embodiment, in order to make the fixing frame 10 have better stability and to facilitate the fixing frame 10 to be fixedly mounted on an engine cylinder, the fixing frame 10 is a triangular fixing frame, and three vertexes of the triangular fixing frame are respectively provided with a fixing pin 11; correspondingly, the engine block is provided with three pin holes matched with the three fixing pins 11, and the fixing frame 10 can be fixedly installed on the engine block by inserting the three fixing pins 11 into the three pin holes of the engine block.
The drive device 20 is preferably a hydraulic drive device, and includes: the hydraulic cylinder 21 is fixedly arranged on the fixed frame 10, the partition plate 22 is slidably arranged in the hydraulic cylinder 21 and divides the internal space of the hydraulic cylinder 21 into two parts, and the partition plate 22 is fixedly connected with one end of the pressing rod 30, which is back to the balance shaft; wherein, the hydraulic cylinder 21 is provided with an oil inlet 23, an oil outlet 24 and a through hole (not labeled in the figure) for the compression rod to pass through, and the oil inlet 23 and the oil outlet 24 are respectively positioned at two sides of the partition plate 22. When the hydraulic oil is flushed into the cylinder space on the left side (the oil inlet 23 side) of the partition plate 22 in the hydraulic cylinder 21 from the oil inlet 23, the partition plate 22 moves rightwards in the hydraulic cylinder 21 under the pressure of the hydraulic oil, so that the pressing rod 30 is driven to move forwards; when the hydraulic oil is flushed into the cylinder space on the right side (the side of the oil outlet 24) of the hydraulic cylinder 21 from the oil outlet 24, the partition plate 22 moves to the left in the hydraulic cylinder 21 under the pressure of the hydraulic oil, so that the pressing rod 30 is driven to move backwards. It should be noted that the driving device 20 is not limited to a hydraulic driving device, and may be a pneumatic driving device or a motor driving device.
In order to prevent the pressing rod 30 from being crushed due to the excessive movement of the partition 22, it is preferable that at least two stoppers 25 are fixedly provided in the hydraulic cylinder 21, and the at least two stoppers 25 are respectively located at both sides of the partition 22. With reference to fig. 2, in the present embodiment, eight stoppers 25 are provided in the hydraulic cylinder 21, and four stoppers 25 are provided on both sides of the partition plate 22, respectively, so that the moving range of the partition plate 22 in the hydraulic cylinder 21 can be limited by the eight stoppers 25, and damage to the pressing rod 30 due to excessive movement of the partition plate 22 can be avoided.
In order to prevent the balance shaft from rotating during the fixing of the balance shaft by the pressing lever 30, it is necessary to ensure that the pressing lever 30 does not rotate. With continued reference to fig. 2, in a preferred embodiment, the cross-sectional shape of the through hole of the hydraulic cylinder 21 for the pressing rod 30 to pass through is designed to be rectangular, and the cross-sectional shape of the corresponding pressing rod 30 is also rectangular; and/or the cross-sectional shape of the internal space of the hydraulic cylinder 21 is rectangular, and the corresponding partition 22 is also rectangular. By the design, the pressing rod 30 can be prevented from rotating in the forward or backward moving process, so that the balance shaft can be prevented from rotating when the pressing rod 30 presses the balance shaft, and the timing installation precision of the balance shaft can be ensured.
With continued reference to fig. 2, in order to make the balance shaft uniformly stressed after the pressing rod is pressed against the balance shaft, preferably, the end of the pressing rod 30 opposite to the balance shaft is provided with a pressing disc 31, and the cross-sectional area of the pressing disc 31 is larger than that of the pressing rod 30; the balance shaft is uniformly stressed by increasing the contact area, so that the balance shaft is ensured not to rotate in the process of fixing the balance shaft through the pressing rod 30.
Referring to fig. 2, fig. 3, fig. 4 and fig. 5, an embodiment of the present invention further discloses an installation method of a balance shaft device with variable installation phases, including:
step 101, rotating a crankshaft to enable a piston in an engine cylinder body to be located at a top dead center or a bottom dead center, and fixing the crankshaft;
when the piston is at a dead center position (either top dead center or bottom dead center position), the crankshaft is at a timing position with respect to the crankshaft.
102, mounting a balance shaft 40 with a balance block on an engine cylinder body, and automatically adjusting the balance position of the balance shaft 40 under the action of the gravity of the balance block;
the position of the balance shaft 40 is automatically adjusted by utilizing the gravity action of the balance weight, so that the balance shaft 40 gradually reaches static balance, and when the balance shaft 40 reaches the static balance, the gravity center of the balance weight is vertically downward.
Step 103, sleeving the integrated chain wheel and the chain 50 on the balance shaft device with the variable installation phase provided by the technical scheme, wherein the balance shaft device with the variable installation phase comprises: mount 10 with locate the hold-down mechanism on the mount 10, wherein, hold-down mechanism includes: the engine comprises a driving device 20 fixedly arranged on a fixed frame 10 and a pressing rod 30 in transmission connection with the driving device 20, wherein one end of the pressing rod 30 is opposite to one end of a balance shaft 40 arranged on an engine cylinder body; the integrated sprocket includes: a driven sprocket 41 which can be sleeved on the balance shaft 40, and a chuck 42 which is fixedly connected with the driven sprocket 41 and can fix the driven sprocket 41 on the balance shaft 40;
104, after the balance shaft 40 is in static balance, fixing the fixed frame 10 on an engine cylinder body, and enabling one end of the pressing rod 30 to be pressed against one end of the balance shaft 40 through the driving device 20 on the fixed frame 10 to fix the balance shaft 40;
the position where the balance shaft 40 reaches static balance under the action of the gravity of the balance weight is the timing position of the balance shaft 40, so that the balance shaft 40 is in the timing position after the balance shaft 40 is fixed by the driving device 20 and the pressing rod 30; that is, the balance shaft 40 and the crankshaft are both in a timed position at this time.
Step 105, sleeving the integrated chain wheel on the balance shaft 40 but not fixing the integrated chain wheel, so that the integrated chain wheel can rotate relative to the balance shaft 40;
106, mounting the chain 50 on the driven chain wheel 41 and a driving chain wheel of the crankshaft to enable the driven chain wheel 41 and the driving chain wheel to be in transmission connection;
step 107, fixedly mounting the tensioner 60 on the engine cylinder and tensioning the chain 60 by using the tensioner 60;
in steps 101 to 104, the timing positions of the balance shaft 40 and the crankshaft are determined, and both the balance shaft 40 and the crankshaft are fixed and do not rotate, so that the timing phase angle between the balance shaft 40 and the crankshaft can be ensured after the chain 50 is mounted on the driven sprocket 41 and the driving sprocket of the crankshaft and the tensioner 60 is fixedly mounted on the engine block.
Step 108, locking and fixing the chuck 42 on the balance shaft 40 so as to fix the driven chain wheel 41 on the balance shaft 40;
after the chain and the tensioner are mounted on the corresponding parts, the driven sprocket is fixed to the balance shaft 40, and the timing phase angle between the balance shaft 40 and the crankshaft and the timing phase angle between the balance shaft 40 and the driven sprocket can be ensured.
And step 109, releasing the fixing of the crankshaft and the balance shaft 40, and removing the fixing frame 10 from the engine cylinder body to finish the timing installation of the balance shaft 40.
In specific implementation, referring to fig. 6 and 7, the balance shaft 40 includes: a body, a first shoulder 45 at a rear end of the body, a journal 43 at a front end of the body for mounting an integrated sprocket, and a second shoulder 44 at an end of the journal 43 facing the first shoulder 45; when the balance shaft is mounted on the engine block, the rear end of the body is inserted into a bearing bush 46 of the engine block, and an oil filling port 48 and an oil storage groove 47 are provided in the bearing bush 46, so that the balance shaft can be lubricated, and the balance shaft 40 can be in static balance (the balance weight is in a freely suspended state) under the gravity action of the balance weight.
The chucks 42 may be three-jaw chucks or six-jaw chucks, and the clamping jaws of the chucks 42 may be simultaneously moved to fix the driven sprocket 41 to the balance shaft 40.
In the installation method of the balance shaft device with variable installation phase, the crankshaft is preferably fixed by the balance shaft device with variable installation phase, and the specific fixing process is substantially the same as the process of fixing the balance shaft, which is not described herein again.
It is worth mentioning that the balance shaft device with variable installation phases and the installation method are suitable for the timing installation of a single balance shaft, a double balance shaft or a multi-balance shaft of an engine.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A variable installation phasing balance shaft assembly, comprising:
the fixing frame can be fixed on the engine cylinder body;
locate hold-down mechanism on the mount, hold-down mechanism includes: the engine cylinder body is fixedly arranged on the engine cylinder body, the driving device is fixedly arranged on the fixed frame, the pressing rod is in transmission connection with the driving device, one end of the pressing rod is opposite to one end of the balance shaft arranged on the engine cylinder body, and the pressing rod can be pressed against one end of the balance shaft under the driving of the driving device so as to fix the balance shaft.
2. The variable installation phase balance shaft apparatus of claim 1 wherein said drive means is a hydraulic drive comprising: the hydraulic cylinder is fixedly arranged on the fixed frame, the partition plate is slidably arranged in the hydraulic cylinder and divides the internal space of the hydraulic cylinder into two parts, and the partition plate is fixedly connected with one end of the compression rod, which is back to the balance shaft; wherein,
the hydraulic cylinder is provided with an oil inlet, an oil outlet and a through hole for the compression rod to pass through, and the oil inlet and the oil outlet are respectively positioned on two sides of the partition plate.
3. The phase-variable balance shaft device according to claim 2, wherein at least two stoppers are fixed in the hydraulic cylinder, and the at least two stoppers are respectively located on both sides of the partition plate.
4. The phase-variable balance shaft device according to claim 2, wherein the cross-sectional shape of the through-hole is rectangular, and the cross-sectional shape of the corresponding compression rod is also rectangular; and/or the cross section of the inner space of the hydraulic cylinder is rectangular, and the corresponding partition plate is also rectangular.
5. The phase-variable balance shaft device according to any one of claims 1 to 4, wherein a pressing disk is provided at an end of the pressing rod opposite to the balance shaft, and a cross-sectional area of the pressing disk is larger than that of the pressing rod.
6. The phase-variable mounting balance shaft device according to claim 1, wherein the fixing frame is a triangular fixing frame, and a fixing pin is provided at each of three vertices of the triangular fixing frame.
7. A method of installing a variable installation phase balance shaft assembly, comprising:
rotating the crankshaft to enable the piston in the engine cylinder body to be positioned at the top dead center or the bottom dead center, and then fixing the crankshaft;
mounting a balance shaft with a balance block on the engine cylinder body, wherein the balance shaft automatically adjusts the balance position under the action of the gravity of the balance block;
sleeving an integrated sprocket and chain over a variable installation position balance shaft assembly as claimed in any one of claims 1 to 6, said variable installation position balance shaft assembly comprising: the mount with locate hold-down mechanism on the mount, wherein, hold-down mechanism includes: the engine cylinder body comprises a fixed frame, a driving device fixedly arranged on the fixed frame and a pressing rod in transmission connection with the driving device, wherein one end of the pressing rod is opposite to one end of a balance shaft arranged on the engine cylinder body; the integrated sprocket comprises: the driven chain wheel can be sleeved on the balance shaft, and the chuck is fixedly connected with the driven chain wheel and can fix the driven chain wheel on the balance shaft;
after the balance shaft is in static balance, fixing the fixed frame on an engine cylinder body, and enabling one end of the compression rod to be pressed against one end of the balance shaft through the driving device to fix the balance shaft;
sleeving the integrated chain wheel on a balance shaft but not fixing the integrated chain wheel, so that the integrated chain wheel can rotate relative to the balance shaft;
mounting the chain on the driven sprocket and a drive sprocket of the crankshaft to drivingly connect the driven sprocket and the drive sprocket;
fixedly mounting a tensioner on an engine block and tensioning the chain with the tensioner;
locking and fixing the chuck on a balance shaft so that the driven chain wheel is fixed on the balance shaft;
and releasing the fixation of the crankshaft and the balance shaft, and removing the fixed frame from the engine cylinder block to finish the timing installation of the balance shaft.
8. The method of installing a variable installation phase balance shaft apparatus of claim 7 wherein said crankshaft is secured by said variable installation phase balance shaft apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299146.0A CN104088961B (en) | 2014-06-27 | 2014-06-27 | The balance shaft apparatus of a kind of variable installation phase place and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299146.0A CN104088961B (en) | 2014-06-27 | 2014-06-27 | The balance shaft apparatus of a kind of variable installation phase place and installation method |
Publications (2)
| Publication Number | Publication Date |
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| CN104088961A true CN104088961A (en) | 2014-10-08 |
| CN104088961B CN104088961B (en) | 2016-06-22 |
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| CN201410299146.0A Expired - Fee Related CN104088961B (en) | 2014-06-27 | 2014-06-27 | The balance shaft apparatus of a kind of variable installation phase place and installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237408A (en) * | 2017-03-30 | 2018-07-03 | 新兴重工湖北三六机械有限公司 | A kind of rotation machining center clamp |
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|---|---|---|---|---|
| JPH0754927A (en) * | 1993-08-10 | 1995-02-28 | Kawasaki Heavy Ind Ltd | Balancer of crank shaft |
| CN101314204A (en) * | 2008-06-23 | 2008-12-03 | 杜江 | Positioning method for trunnion shaft assembly phase point |
| JP2010169124A (en) * | 2009-01-20 | 2010-08-05 | Mitsubishi Heavy Ind Ltd | Rotator balance adjustment method |
| CN202292589U (en) * | 2011-09-29 | 2012-07-04 | 长城汽车股份有限公司 | Oil seal installation tool for engine |
| CN202847373U (en) * | 2012-10-29 | 2013-04-03 | 上汽依维柯红岩商用车有限公司 | Balance shaft support |
| CN203357375U (en) * | 2013-06-06 | 2013-12-25 | 河南中汇汽车零部件有限公司 | Gear retracting tool for balance shaft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237408A (en) * | 2017-03-30 | 2018-07-03 | 新兴重工湖北三六机械有限公司 | A kind of rotation machining center clamp |
| CN108237408B (en) * | 2017-03-30 | 2024-03-26 | 新兴重工湖北三六一一机械有限公司 | Rotary machining center fixture |
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| CN104088961B (en) | 2016-06-22 |
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