CN202790050U - Engine assembly fastening prolonging shaft - Google Patents
Engine assembly fastening prolonging shaft Download PDFInfo
- Publication number
- CN202790050U CN202790050U CN 201220485530 CN201220485530U CN202790050U CN 202790050 U CN202790050 U CN 202790050U CN 201220485530 CN201220485530 CN 201220485530 CN 201220485530 U CN201220485530 U CN 201220485530U CN 202790050 U CN202790050 U CN 202790050U
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- shaft
- engine assembly
- prolonging
- assembly fastening
- shaft part
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- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses an engine assembly fastening prolonging shaft and belongs to the technical field of tools special for engine assembly and disassembly. The engine assembly fastening prolonging shaft is provided with a stepped shaft, wherein one end of the stepped shaft is a square shaft head and an internal spline key is arranged at the other end of the stepped shaft. According to the engine assembly fastening prolonging shaft, production pressure caused by relying on an imported part of clients for a long time is relieved. The engine assembly fastening prolonging shaft costs less than the imported part by 50%, the engine assembly fastening prolonging shaft is 3-4 times longer than the imported part in replacement cycle and date of delivery is shortened to one month. Therefore, the engine assembly fastening prolonging shaft has the advantages that the production pressure, the maintenance cycle and cost accounting pressure of the clients are reduced and production efficiency is improved for the clients and economic benefit is increased at the same time.
Description
Technical field
The utility model relates to a kind of engine assembly and tightens extending shaft, belongs to dismounting engine special tool technical field.
Background technique
The existing product difficulty of processing is larger, and the raw material Buying Cycle is long and processing technology is complicated, relies on for a long time import to keep normal production always.Yet in use very easily wearing and tearing, even twist into two parts.Usually must change in per 3 months, otherwise can't continue to produce.Each buying import extending shaft lead time is 2-3 month, and cost is difficult to control and fluctuation is larger, has a strong impact on the normal production schedule.
Summary of the invention
In order to overcome the defective in the above-mentioned background technology, the utility model provides a kind of engine assembly to tighten extending shaft, and this extending shaft should be simple in structure, and the manufacturing cycle is short, long service life.
The technical solution adopted in the utility model is: a kind of engine assembly is tightened extending shaft, it adopts a multidiameter shaft, described multidiameter shaft is connected successively by the first shaft part, the second shaft part and the 3rd shaft part, be provided with a square spindle nose at the first shaft part end, outside the end of the 3rd shaft part, be provided with an annular projection, be provided with an internal spline in the end.
Described multidiameter shaft is the integral shaft that is connected in turn by square spindle nose, the first shaft part, the second shaft part and the 3rd shaft part.
Be provided with a center hole in described square spindle nose and the first shaft part.
Laterally being provided with one and running through circular hole of described square spindle nose respectively arranges a steel ball in the aperture of running through circular hole, be provided with a spring between two steel balls.
The beneficial effects of the utility model are: this engine assembly is tightened extending shaft and is adopted a multidiameter shaft, and an end of multidiameter shaft is square spindle nose, is provided with internal spline in the other end.This extending shaft has solved that the client relies on the import part for a long time and the production pressure that faces, cost is lower than import part 50%, replacement cycle has prolonged 3-4 doubly, and foreshortened to 1 month delivery date, thereby has reduced production pressure, service cycle, cost efficient pressure for the client.For the client has improved manufacturing efficiency, increased economic benefit simultaneously.
Description of drawings
Fig. 1 is the front view that a kind of engine assembly is tightened extending shaft.
Fig. 2 is the plan view that a kind of engine assembly is tightened extending shaft.
Fig. 3 is the C-C view among Fig. 1.
Fig. 4 is the right elevation among Fig. 1.
Among the figure: 1, multidiameter shaft, 1a, the first shaft part, 1b, the second shaft part, 1c, the 3rd shaft part, 1d, annular projection, 2, internal spline, 2a, endoporus, 3, square spindle nose, 4, run through circular hole, 5, center hole, 6, steel ball, 7, spring.
Embodiment
Fig. 1,2,3,4 shows the structural drawing that a kind of engine assembly is tightened extending shaft.Among the figure, this engine assembly is tightened extending shaft and is adopted the integral shaft that is connected in turn by square spindle nose 3, the first shaft part 1a, the second shaft part 1b and the 3rd shaft part 1c.Be provided with a center hole 5 in square spindle nose 3 and the first shaft part 1a, be provided with an annular projection 1d outside the end of the 3rd shaft part 1c, be provided with an internal spline 2 in the end, internal spline 2 is one section endoporus 2a inward.Laterally being provided with one and running through circular hole 4 of square spindle nose 3 respectively arranges a steel ball 6 in the aperture of running through circular hole 4, be provided with a spring 7 between two steel balls 6, and the aperture steel ball 6 behind riveting that runs through circular hole 4 can not drop out from the hole.
Above-mentioned extending shaft selects the 42CrMo4 forging to make making, and blank needs normalized treatment, normalizing temperature 930-950 degree before the processing, hardness is HB185-225, and carburizing, Quenching Treatment are carried out in the processing rear surface, and its surface hardness is HRC59-65, and centre hardness is HRC31-39, and correct grinding is finished product at last.
Adopt the extending shaft of technique scheme to play in actual applications the torsion transfer function, be used for connecting electric tightening equipment and high-strength bolt.Its internal spline end and electric tightening equipment connection, the square shaft head end is connected with the motor connecting bolt.In use, the rotation of electric tightening device drives extending shaft, high-strength bolt is fixed on the engine part by the screwing force of extending shaft, to there be 4 bolts to be tightened simultaneously at every turn, every extending shaft is respectively with tightening screwdriver bit, and its torque value can reach 350N/M, and the extending shaft excircle part is equipped with rolling bearing, play in transmission torsion process torsion and do not suffer a loss, thereby reach the consistent harsh technical requirements of bolt torque value that is tightened.Guarantee the engine product quality conformance.The torque value of its electric tightening equipment is by the Customer Standard apparatus settings.
Claims (4)
1. an engine assembly is tightened extending shaft, it adopts a multidiameter shaft (1), it is characterized in that: described multidiameter shaft (1) is connected successively by the first shaft part (1a), the second shaft part (1b) and the 3rd shaft part (1c), be provided with a square spindle nose (3) at the first shaft part (1a) end, outside the end of the 3rd shaft part (1c), be provided with an annular projection (1d), be provided with an internal spline (2) in the end.
2. a kind of engine assembly according to claim 1 is tightened extending shaft, it is characterized in that: described multidiameter shaft (1) is the integral shaft that is connected in turn by square spindle nose (3), the first shaft part (1a), the second shaft part (1b) and the 3rd shaft part (1c).
3. a kind of engine assembly according to claim 1 is tightened extending shaft, it is characterized in that: be provided with a center hole (5) in described square spindle nose (3) and the first shaft part (1a).
According to claim 1 or 3 described a kind of engine assemblies tighten extending shaft, it is characterized in that: laterally being provided with and running through circular hole (4) of described square spindle nose (3), in the aperture of running through circular hole (4) steel ball (6) is set respectively, between two steel balls (6), is provided with a spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220485530 CN202790050U (en) | 2012-09-22 | 2012-09-22 | Engine assembly fastening prolonging shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220485530 CN202790050U (en) | 2012-09-22 | 2012-09-22 | Engine assembly fastening prolonging shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790050U true CN202790050U (en) | 2013-03-13 |
Family
ID=47817316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220485530 Expired - Fee Related CN202790050U (en) | 2012-09-22 | 2012-09-22 | Engine assembly fastening prolonging shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790050U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265782A (en) * | 2014-08-11 | 2015-01-07 | 川源(中国)机械有限公司 | Connecting shaft for Y type standard motor |
| CN104482033A (en) * | 2014-12-19 | 2015-04-01 | 无锡市士民机械设备厂 | Rotary table main shaft of circle formation and enveloping integrated machine |
-
2012
- 2012-09-22 CN CN 201220485530 patent/CN202790050U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265782A (en) * | 2014-08-11 | 2015-01-07 | 川源(中国)机械有限公司 | Connecting shaft for Y type standard motor |
| CN104482033A (en) * | 2014-12-19 | 2015-04-01 | 无锡市士民机械设备厂 | Rotary table main shaft of circle formation and enveloping integrated machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20170922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |