CN204108949U - A kind of engine crankshaft assembly loads accessory - Google Patents
A kind of engine crankshaft assembly loads accessory Download PDFInfo
- Publication number
- CN204108949U CN204108949U CN201420545356.9U CN201420545356U CN204108949U CN 204108949 U CN204108949 U CN 204108949U CN 201420545356 U CN201420545356 U CN 201420545356U CN 204108949 U CN204108949 U CN 204108949U
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- CN
- China
- Prior art keywords
- sleeve
- pull bar
- hole
- nut
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A kind of engine crankshaft assembly loads accessory, comprise sleeve, pull bar and nut, described sleeve is ladder bushing, sleeve inner offers ladder hole vertically, and through hole one end is macropore, and macropore internal diameter is greater than dead eye internal diameter, the other end is aperture, hole diameter is greater than pull bar maximum outside diameter, and between macropore and aperture, also have intermediate throughholes, internal diameter is greater than the external diameter in crank rod portion; Internal thread is processed with bottom pull bar, coordinate with left crank rod portion external screw thread, middle part is thread segment, nut sleeve is connected on this thread segment, top is provided with the rotating mechanism that pull bar is moved up and down vertically, pull bar through sleeve aperture make nut be placed in sleeve outside, the height of sleeve ladder hole be greater than length that crank assemblby is installed to the stroke on crankcase and left bent axle with.The utility model structure is simple, easy to use, can when not loading equipment, completes the maintenance of engine single-piece and non-volume production stage crank assemblby loads, the service condition that reduction crank assemblby loads.
Description
Technical field
The utility model relates to engine art, and what be specifically related to a kind of engine crankshaft assembly loads accessory.
Background technology
Crank assemblby is that engine realizes working cycles, completes the main motion parts of power conversion, and crank assemblby is formed by connecting by crankpin by left and right bent axle, and connecting rod is arranged between the bent axle of left and right, is linked together by crankpin and left and right bent axle.Crank assemblby is as the force transmission mechanism of engine, and its installation accuracy requires very high, and the connection of being permitted multiengined crank assemblby and casing has been come by interference fit, and one end that bearing is housed by crank assemblby is contained on the dead eye of engine crankshaft box.Product for volume production adopts the equipment of loading to complete the assembling of crank assemblby on casing usually, the accessory of design specialized is needed to come crankcase and crank assemblby location, different engines, because the size of crankcase size and crank assemblby is different, can not load on same accessory.In addition for independent maintenance and the new architecture in non-volume production stage, do not have specially to load accessory, the assembling of crank assemblby can not be completed with erection unit, can only be assembled by the mode of manually knocking, strength during owing to manually knocking crank assemblby and direction unbalanced, easily cause the distortion of left and right bent axle and crankpin, affect the depth of parallelism between the bent axle of left and right, the installation accuracy of crank assemblby can not be ensured, engine operationally can cause the inordinate wear of the parts such as piston, thus affect engine performance, reduce engine life.
Utility model content
It is simple that the purpose of this utility model is to provide a kind of structure, easy to operate, without the need to just crank assemblby being loaded accessory by the crank assemblby loaded in crankcase bearing hole by erection unit, by the motion of accessory, axial tightening power is upwards produced to crank assemblby, what make crank assemblby uniform force loads in crankcase bearing hole, guarantee the assembly precision of crank assemblby, ensure the operation that engine is good.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of engine crankshaft assembly loads accessory, comprise sleeve, pull bar and nut, described sleeve is ladder bushing, sleeve inner offers ladder hole vertically, and through hole one end is macropore, and described macropore internal diameter is greater than the dead eye internal diameter of crankcase, the through hole other end is aperture, described hole diameter is greater than the maximum outside diameter of pull bar, and between macropore and aperture, also have an intermediate throughholes, the internal diameter of described intermediate throughholes is greater than the external diameter in crank rod portion; Internal thread is processed with vertically bottom described pull bar, and coordinate with the external screw thread in left crank rod portion, it is thread segment in the middle part of pull bar, nut sleeve is connected on the thread segment of pull bar, pull bar top is provided with the rotating mechanism that pull bar is moved up and down vertically, pull bar through sleeve aperture make nut be placed in sleeve outside, the height of described sleeve ladder hole be greater than length that crank assemblby is installed to the stroke on crankcase and left bent axle with.
Further, the large nose end outside of described sleeve circumferentially offers breach, and the chain limited block on the height of breach and width and crankcase is adaptive.
Chain is adopted to carry out the type of power transmission for engine, crankcase is also designed with chain limited block, for avoiding loading when accessory uses and chain limited block is interfered, width according to chain limited block has also offered breach of stepping down with height in the exterior periphery of accessory sleeve, increases the scope of application of accessory.
Further, described rotating mechanism adopts handle.
Further, described rotating mechanism adopts hex-head nut.
Advantageous Effects of the present utility model is:
Accessory is loaded by the crank assemblby of design specialized, the pull bar loading accessory is coordinated with the screw thread in crank rod portion, and make to produce relative motion between pull bar and nut to pull bar applying rotatory force, namely pull bar drives crank assemblby move to crankcase and produce axial tightening power upwards, what make crank assemblby energy uniform force loads in the dead eye of crankcase, ensure that the assembly precision of crank assemblby, ensure that the good operation of engine, can when not loading equipment, the crank assemblby completing the maintenance of engine single-piece and non-volume production stage new architecture loads, greatly reduce the service condition that crank assemblby loads, compared to existing technology, the utility model structure is simple, cost is low, easy to use, loading of crank assemblby can be completed at any time.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model when specifically implementing;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the structural representation after the utility model has been implemented;
Fig. 5 is the structural representation of the another kind of embodiment of the utility model;
Reference numeral
1. sleeve; 2. pull bar; 3. nut; 4. crankcase; 5. crank assemblby
101. macropore 102. intermediate throughholes; 103. aperture; 104. breach 201. pull bar internal threads;
202. hex-head nut; 203. handle; 401. chain limited blocks; 402. crankcase bearing holes;
501. bearing; 502. left bent axles;
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further details.
As shown in Figure 1, engine crankshaft assembly of the present utility model loads accessory, comprise sleeve 1, pull bar 2 and nut 3, sleeve 1 is ladder bushing, the inside of sleeve 1 offers ladder hole vertically, through hole one end is macropore 101, macropore 101 internal diameter is greater than the internal diameter in crankcase bearing hole 402, make to be connected to crankcase body place bottom sleeve 1, the through hole other end is aperture 103, aperture 103 internal diameter is greater than the maximum outside diameter of pull bar 2, and between macropore 101 and aperture 103, also have an intermediate throughholes 102, the internal diameter of intermediate throughholes 102 is greater than the external diameter in bent axle 502 bar portion; Internal thread 201 is processed with vertically bottom pull bar 2, and coordinate with the external screw thread in left bent axle 502 bar portion, it is thread segment in the middle part of pull bar 2, nut 3 is socketed on the thread segment of pull bar 2, pull bar 2 top is provided with the rotating mechanism that pull bar 2 is moved up and down vertically, in the present embodiment, rotating mechanism adopts the handle 203 or hex-head nut 202 that are fixed on pull bar 2 to realize pull bar 2 moving up and down relative to nut 3, and pull bar 2 passes sleeve aperture 103 and makes nut 3 be placed in sleeve 1 outside.For ensureing to load accessory and have enough stroke space when loading crank assemblby 5, the height of sleeve 1 ladder hole be greater than length that crank assemblby 5 is installed to the stroke on crankcase 4 and left bent axle 502 with.
Chain is adopted to carry out the type of power transmission for engine, crankcase 4 is also designed with chain limited block 401, for avoiding loading when accessory uses and chain limited block 401 is interfered, the large nose end outside of sleeve 1 circumferentially offers breach 104, chain limited block 401 on the height of breach 104 and width and crankcase is adaptive, adds the scope of application of accessory.
As shown in Figures 2 to 5, crank assemblby is utilized to load accessory when loading crank assemblby, first the left bent axle of crank assemblby is passed crankcase bearing hole, crank assemblby being loaded accessory is socketed on left bent axle, and the breach making sleeve large nose end outside circumferentially offer coordinates with the chain limited block on crankcase and steps down, then sleeve bottom end face and crankcase to be conflicted and after posting, rotating rod, makes the external thread rotary in internal thread and left crank rod portion bottom pull bar merge and connects as one.To tighten to sleeve top with spanner rotating nut and fix, then to the handle on pull bar or hex-head nut force, pull bar drives crank assemblby rotate and do axially-movable towards direction, crankcase bearing hole, bearing on crank assemblby is loaded in crankcase bearing hole, realizes the interference fit of bearing and dead eye.
In sum, the utility model structure is simple, cost is low, easy to use, what can make crank assemblby uniform force loads in the dead eye of crankcase, ensure that the assembly precision of crank assemblby, ensure that the good operation of engine, can when not loading equipment, the crank assemblby completing the maintenance of engine single-piece and non-volume production stage new architecture loads, and reduces the service condition that crank assemblby loads.
Claims (4)
1. an engine crankshaft assembly loads accessory, comprise sleeve, pull bar and nut, it is characterized in that: described sleeve is ladder bushing, sleeve inner offers ladder hole vertically, and through hole one end is macropore, and described macropore internal diameter is greater than the dead eye internal diameter of crankcase, the through hole other end is aperture, described hole diameter is greater than the maximum outside diameter of pull bar, and between macropore and aperture, also have an intermediate throughholes, the internal diameter of described intermediate throughholes is greater than the external diameter in crank rod portion; Internal thread is processed with vertically bottom described pull bar, and coordinate with the external screw thread in left crank rod portion, it is thread segment in the middle part of pull bar, nut sleeve is connected on the thread segment of pull bar, pull bar top is provided with the rotating mechanism that pull bar is moved up and down vertically, pull bar through sleeve aperture make nut be placed in sleeve outside, the height of described sleeve ladder hole be greater than length that crank assemblby is installed to the stroke on crankcase and left bent axle with.
2. a kind of engine crankshaft assembly according to claim 1 loads accessory, it is characterized in that: the large nose end outside of described sleeve circumferentially offers breach, and the chain limited block on the height of breach and width and crankcase is adaptive.
3. a kind of engine crankshaft assembly according to claim 1 loads accessory, it is characterized in that: described rotating mechanism adopts handle.
4. a kind of engine crankshaft assembly according to claim 1 loads accessory, it is characterized in that: described rotating mechanism adopts hex-head nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420545356.9U CN204108949U (en) | 2014-09-22 | 2014-09-22 | A kind of engine crankshaft assembly loads accessory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420545356.9U CN204108949U (en) | 2014-09-22 | 2014-09-22 | A kind of engine crankshaft assembly loads accessory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204108949U true CN204108949U (en) | 2015-01-21 |
Family
ID=52326304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420545356.9U Expired - Fee Related CN204108949U (en) | 2014-09-22 | 2014-09-22 | A kind of engine crankshaft assembly loads accessory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204108949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112909A (en) * | 2016-08-31 | 2016-11-16 | 侯马市东鑫机械铸造有限公司 | For pulling out the device of bent axle axle head sprocket wheel |
-
2014
- 2014-09-22 CN CN201420545356.9U patent/CN204108949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112909A (en) * | 2016-08-31 | 2016-11-16 | 侯马市东鑫机械铸造有限公司 | For pulling out the device of bent axle axle head sprocket wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151116 Address after: 400054 Banan District, Chongqing building Avenue, No. 2, building 1 Patentee after: CHONGQING CONSTRUCTION ELECTROMECHANICAL CO., LTD. Address before: 400054 Huaxi Industrial Park, Banan District, Chongqing Road, No. 1 Patentee before: Chongqing Jianshe Motorcycle Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20170922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |