CN207431702U - For the multistage super-pressure thin-walled hydraulic elongator of hub of wind power generator kingbolt - Google Patents
For the multistage super-pressure thin-walled hydraulic elongator of hub of wind power generator kingbolt Download PDFInfo
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- CN207431702U CN207431702U CN201721485369.1U CN201721485369U CN207431702U CN 207431702 U CN207431702 U CN 207431702U CN 201721485369 U CN201721485369 U CN 201721485369U CN 207431702 U CN207431702 U CN 207431702U
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- cylinder body
- upper strata
- piston
- kingbolt
- lower floor
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Abstract
The utility model discloses a kind of multistage super-pressure thin-walled hydraulic elongator for hub of wind power generator kingbolt, including lower floor's cylinder body, underlying piston, upper strata cylinder body, upper strata piston, tensile bolt, stretching nut and spring；Lower floor's cylinder body and upper strata cylinder body are threadedly coupled, and underlying piston is slidably connected with lower floor cylinder body, and upper strata piston is slidably connected with upper strata cylinder body, and gear wheel is embedded in support base, and spring is on gear wheel.The utility model links while passing through two-stage hydraulic cylinder, realizes the stretching to kingbolt, and in the case where ensureing same stretch power, the cross-sectional area of two-stage hydraulic cylinder is small than the cross-sectional area of only one-stage hydraulic cylinder；The tensile strength of the material of the levels cylinder body of the utility model reaches more than 1400MPa, and yield strength reaches more than 1000MPa, while can guarantee toughness, and the wall thickness of cylinder body is made to be kept to 5mm by original 10mm.So as to reduce hydraulic cylinder outer diameter, that is, reduce hydraulic elongator outer diameter.
Description
Technical field
It is stretched the utility model is related to kingbolt on a kind of hub of wind power generator and pre-tightens or unscrew the new multistage used
Super-pressure thin-walled hydraulic elongator, the automatic accurate stretching preload for realizing kingbolt or unscrewing action.
Background technology
At present, the kingbolt that blade of wind-driven generator is connected with wheel hub, which stretches and pre-tightens or unscrew, to be stretched through hydraulic bolt
What device was realized, it is increasingly improved with the safety coefficient of wind-driven generator, kingbolt quantity is increasing, and pitch of bolts gradually subtracts
It is small, and there are three features for existing single-stage hydraulic bolt stretching machine：First, cylinder body is thicker, cause cylinder diameter bigger；Cause
Single-stage hydraulic bolt stretching machine can not be connected with kingbolt；Second is that oil pressure area is insufficient, cause power output inadequate；Third, monomer spiral shell
Bolt hydraulic elongator is present with the phenomenon that kingbolt deflection in drawing process, cause the stretching screw rod of hydraulic bolt tensioning jack with
Kingbolt generates catching phenomenon.Obvious this bolt stretching machine has been unable to meet requirement at this stage.
Utility model content
To solve the above problem existing in the prior art, the utility model to design a kind of easy for installation, High power output and
Do not occur the multistage super-pressure thin-walled hydraulic elongator for hub of wind power generator kingbolt of bolt skewness.
To achieve these goals, the technical solution of the utility model is as follows：
For the multistage super-pressure thin-walled hydraulic elongator of hub of wind power generator kingbolt, including support base, gear wheel,
Lower floor's cylinder body, underlying piston, upper strata cylinder body, upper strata piston, tensile bolt, stretch nut, resetting spring lid, gear A, gear B,
Gear block, gear box cover and spring；
The support base is fixedly connected with lower floor cylinder body, and lower floor's cylinder body and upper strata cylinder body are threadedly coupled, underlying piston with
Lower floor's cylinder body is slidably connected, and upper strata piston is slidably connected with upper strata cylinder body, and in gear wheel insertion support base, spring is mounted on canine tooth
On wheel, tensile bolt is connected with stretching nut thread, and tensile bolt is placed in underlying piston and upper strata piston inner hole, stretches spiral shell
Mother is placed on the piston of upper strata, and spring reverse motion is mounted in resetting spring lid, gear A, gear B, gear block and gear
Case lid forms gear-box；The centrally disposed threaded hole of tensile bolt, for the threaded connection with kingbolt；
Lower floor's cylinder body and the tensile strength of the material of upper strata cylinder body are more than 1400MPa, and yield strength is
More than 1000MPa.
Further, combination sealing is set between the underlying piston and lower floor's cylinder body；The upper strata piston with it is upper
Combination sealing is set between layer cylinder body.
Further, the spring lower part is connected with gear wheel, top and lower floor's cylinder body connect, and spring, which is mounted on, to be stretched
The outside of bolt.
Further, the internal via shape of the upper strata piston is followed successively by big cylindrical hole, conical bore and roundlet from top to bottom
Post holes sets top bar between big cylindrical hole and conical bore, conical bore is got out of a predicament or an embarrassing situation with small cylindrical opening setting, the stretching nut
Outer shape match with the big cylindrical hole of upper strata piston and the inner shape of conical bore.
Further, the underlying piston is identical with the outer diameter of upper strata piston.
Further, the spring reverse motion top is connected with resetting spring lid, lower part is connected with stretching nut.
Further, the support base is connected with lower floor cylinder body by jackscrew.
Further, the upper strata cylinder body and lower floor's cylinder body are connected respectively with two oil outlets of hydraulic valve block, hydraulic pressure
The oil inlet of valve block is connected by quick coupling with hydraulic oil pipe；Hydraulic oil pipe is connected with hydraulic pump.
Compared with prior art, the utility model has the advantages that：
1st, due to linking while the utility model passes through two-stage hydraulic cylinder, the stretching to kingbolt is realized, is being ensured
In the case of same stretch power, the cross-sectional area of two-stage hydraulic cylinder can be smaller than the cross-sectional area of only one-stage hydraulic cylinder, so as to subtract
Lack the diameter of hydraulic cylinder, that is, reduce the diameter of hydraulic elongator.
2nd, lower floor's cylinder body of the utility model and upper strata cylinder body reach the tensile strength of its material after modifier treatment
More than 1400MPa, yield strength reaches more than 1000MPa, while can guarantee toughness, and the wall thickness of cylinder body is made to be subtracted by original 10mm
For 5mm.At present, which has already passed through performance test and testing fatigue, in certain work times, is entirely capable of bearing 150MPa
Super-pressure.Due to being thinned for wall thickness, so as to reduce the outer diameter of hydraulic cylinder, that is, reduce the diameter of hydraulic elongator.
3rd, the spring of the utility model is mounted on the outside of tensile bolt, when kingbolt glances off, can pass through bullet
Spring is to the offset of the reaction force compensation kingbolt of tensile bolt so that drawing force output is uniform, ensure that bolt elongate amount
Accurate control.
4th, the gear A of the utility model, gear B, gear block and gear box cover composition gear-box, gear-box is in servo
Motor driving is lower to engage with gear wheel, is precisely controlled running accuracy, automatic to realize screwing or unscrewing for main nut.
5th, the utility model can not only be installed on the smaller kingbolt of spacing, and can automatically and accurately carry out main spiral shell
The stretching of bolt is pre-tightened or unscrewed, and ensures the accurate control of kingbolt amount of tension, without destroying kingbolt.
6th, although the utility model is specific to wind power equipment design, since it has lighter quality and to stretching
Be precisely controlled, can be used for other fields bolt tension pre-tighten or unscrew.
Description of the drawings
Fig. 1 is the appearance diagram of the utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the C-C sectional views of Fig. 2.
In figure：1st, support base, 2, gear wheel, 3, lower floor's cylinder body, 4, underlying piston, 5, upper strata cylinder body, 6, upper strata piston, 7,
Tensile bolt, 8, stretch nut, 9, resetting spring lid, 10, gear A, 11, gear B, 12, gear block, 13, gear box cover,
14th, kingbolt, 15, spring, 16, spring reverse motion.
Specific embodiment
The utility model is further described through below in conjunction with the accompanying drawings.As shown in Figs. 1-3, for wind-power electricity generation wheel
The multistage super-pressure thin-walled hydraulic elongator of hub kingbolt, including support base 1, gear wheel 2, lower floor's cylinder body 3, underlying piston 4, on
Layer cylinder body 5, upper strata piston 6, tensile bolt 7, stretch nut 8, resetting spring lid 9, gear A 10, gear B 11, gear block 12,
Gear box cover 13 and spring 15；
The support base 1 is fixedly connected with lower floor cylinder body 3, and lower floor's cylinder body 3 and upper strata cylinder body 5 are threadedly coupled, and lower floor lives
Plug 4 is slidably connected with lower floor cylinder body 3, and upper strata piston 6 is slidably connected with upper strata cylinder body 5, in the insertion support base 1 of gear wheel 2, spring
15 are mounted on gear wheel 2, and tensile bolt 7 is threadedly coupled with stretching nut 8, and tensile bolt 7 is placed in underlying piston 4 and upper strata
In 6 endoporus of piston, stretch nut 8 and be placed on upper strata piston 6, spring reverse motion 16 is mounted in resetting spring lid 9, gear
A10, gear B 11, gear block 12 and gear box cover 13 form gear-box；7 centrally disposed threaded hole of tensile bolt, for master
The threaded connection of bolt 14；
Lower floor's cylinder body 3 and the tensile strength of the material of upper strata cylinder body 5 are more than 1400MPa, and yield strength is
More than 1000MPa.
Further, combination sealing is set between the underlying piston 4 and lower floor's cylinder body 3；The upper strata piston 6 with
Combination sealing is set between upper strata cylinder body 5.
Further, 15 lower part of spring is connected with gear wheel 2, top and lower floor's cylinder body 3 connect, and spring 15 is installed
In the outside of tensile bolt 7.
Further, the internal via shape of the upper strata piston 6 is followed successively by big cylindrical hole, conical bore and roundlet from top to bottom
Post holes sets top bar between big cylindrical hole and conical bore, conical bore is got out of a predicament or an embarrassing situation with small cylindrical opening setting, the stretching nut
8 outer shape matches with the big cylindrical hole of upper strata piston 6 and the inner shape of conical bore.
Further, the underlying piston 4 is identical with the outer diameter of upper strata piston 6.
Further, the spring reverse motion top is connected with resetting spring lid 9, lower part is connected with stretching nut 8.
Further, the support base 1 is connected with lower floor cylinder body 3 by jackscrew.
Further, the upper strata cylinder body 5 and lower floor's cylinder body 3 are connected respectively with two oil outlets of hydraulic valve block, liquid
The oil inlet of pressure valve block is connected by quick coupling with hydraulic oil pipe；Hydraulic oil pipe is connected with hydraulic pump.
The operation principle of the utility model is as follows：
During utility model works, first tensile bolt 7 and kingbolt 14 are connected through a screw thread；When tensile bolt 7 with
After kingbolt 14 connects, hydraulic pump exports 150MPa ultrahigh-pressure hydraulics oil to upper strata cylinder body 5 and lower floor's cylinder body 3 so that lower floor
Piston 4 jacks simultaneously with upper strata piston 6, links while passing through two-stage hydraulic cylinder, and the utility model is not limited to the present embodiment,
Equivalent concepts or change in any technical scope disclosed in the utility model are classified as the protection model of the utility model
It encloses.
Claims (8)
1. for the multistage super-pressure thin-walled hydraulic elongator of hub of wind power generator kingbolt, it is characterised in that：Including support
Seat (1), gear wheel (2), lower floor's cylinder body (3), underlying piston (4), upper strata cylinder body (5), upper strata piston (6), tensile bolt (7),
Stretch nut (8), resetting spring lid (9), gear A (10), gear B (11), gear block (12), gear box cover (13) and spring
(15)；
The support base (1) is fixedly connected with lower floor's cylinder body (3), and lower floor's cylinder body (3) and upper strata cylinder body (5) are threadedly coupled, under
Layer piston (4) is slidably connected with lower floor's cylinder body (3), and upper strata piston (6) is slidably connected with upper strata cylinder body (5), and gear wheel (2) is embedded
In support base (1), spring (15) is mounted on gear wheel (2), and tensile bolt (7) is threadedly coupled with stretching nut (8), is stretched
Bolt (7) is placed in underlying piston (4) and upper strata piston (6) endoporus, is stretched nut (8) and is placed on upper strata piston (6), spring
Resetting apparatus (16) is mounted in resetting spring lid (9), gear A (10), gear B (11), gear block (12) and gear box cover
(13) gear-box is formed；Tensile bolt (7) centrally disposed threaded hole, for the threaded connection with kingbolt (14)；
Lower floor's cylinder body (3) and the tensile strength of the material of upper strata cylinder body (5) are more than 1400MPa, and yield strength is
More than 1000MPa.
2. the multistage super-pressure thin-walled hydraulic elongator according to claim 1 for hub of wind power generator kingbolt,
It is characterized in that：Combination sealing is set between the underlying piston (4) and lower floor's cylinder body (3)；The upper strata piston (6) with
Upper strata cylinder body sets combination sealing between (5).
3. the multistage super-pressure thin-walled hydraulic elongator according to claim 1 for hub of wind power generator kingbolt,
It is characterized in that：Spring (15) lower part is connected with gear wheel (2), top and lower floor's cylinder body (3) connect, spring (15) peace
Mounted in the outside of tensile bolt (7).
4. the multistage super-pressure thin-walled hydraulic elongator according to claim 1 for hub of wind power generator kingbolt,
It is characterized in that：The internal via shape of the upper strata piston (6) is followed successively by big cylindrical hole, conical bore and small column from top to bottom
Hole sets top bar between big cylindrical hole and conical bore, conical bore is got out of a predicament or an embarrassing situation with small cylindrical opening setting, the stretching nut
(8) outer shape matches with the big cylindrical hole of upper strata piston (6) and the inner shape of conical bore.
5. the multistage super-pressure thin-walled hydraulic elongator according to claim 1 for hub of wind power generator kingbolt,
It is characterized in that：The underlying piston (4) is identical with the outer diameter of upper strata piston (6).
6. the multistage super-pressure thin-walled hydraulic elongator according to claim 1 for hub of wind power generator kingbolt,
It is characterized in that：The spring reverse motion top is connected with resetting spring lid (9), lower part is connected with stretching nut (8).
7. the multistage super-pressure thin-walled hydraulic elongator according to claim 1 for hub of wind power generator kingbolt,
It is characterized in that：The support base (1) is connected with lower floor's cylinder body (3) by jackscrew.
8. the multistage super-pressure thin-walled hydraulic elongator according to claim 1 for hub of wind power generator kingbolt,
It is characterized in that：The upper strata cylinder body (5) and lower floor's cylinder body (3) are connected respectively with two oil outlets of hydraulic valve block, hydraulic pressure
The oil inlet of valve block is connected by quick coupling with hydraulic oil pipe；Hydraulic oil pipe is connected with hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721485369.1U CN207431702U (en) | 2017-11-09 | 2017-11-09 | For the multistage super-pressure thin-walled hydraulic elongator of hub of wind power generator kingbolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721485369.1U CN207431702U (en) | 2017-11-09 | 2017-11-09 | For the multistage super-pressure thin-walled hydraulic elongator of hub of wind power generator kingbolt |
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| Publication Number | Publication Date |
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| CN207431702U true CN207431702U (en) | 2018-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721485369.1U Active CN207431702U (en) | 2017-11-09 | 2017-11-09 | For the multistage super-pressure thin-walled hydraulic elongator of hub of wind power generator kingbolt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717429A (en) * | 2017-11-09 | 2018-02-23 | 大连泰凯工业有限公司 | Multistage super-pressure thin-walled hydraulic elongator for hub of wind power generator kingbolt |
-
2017
- 2017-11-09 CN CN201721485369.1U patent/CN207431702U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717429A (en) * | 2017-11-09 | 2018-02-23 | 大连泰凯工业有限公司 | Multistage super-pressure thin-walled hydraulic elongator for hub of wind power generator kingbolt |
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