CN1015328B - Externally feeding type hydraulic devcie for swelling and strengthening protective ring - Google Patents
Externally feeding type hydraulic devcie for swelling and strengthening protective ringInfo
- Publication number
- CN1015328B CN1015328B CN 88103861 CN88103861A CN1015328B CN 1015328 B CN1015328 B CN 1015328B CN 88103861 CN88103861 CN 88103861 CN 88103861 A CN88103861 A CN 88103861A CN 1015328 B CN1015328 B CN 1015328B
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- Prior art keywords
- pressure
- guiding
- low
- pressure chamber
- passage
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Abstract
The present invention relates to a hydraulic special device for expanding and strengthening forging stocks forming an approximately cylindrical shape, and the forging stocks forming an approximately cylindrical shape can be used as protective rings of generators. The device is provided with a closed bearing framework, and a liquid-compensating cylinder with a high-pressure chamber and a low-pressure chamber is fixed to the lower part of the bearing framework; one passage is respectively formed in a guiding and force reducing column and a plunger; the upper part of the guiding and force reducing column is matched with an upper conical mold, and the lower part is matched with a lower conical mold; outside high-pressure liquid and outside low-pressure liquid respectively flow into the high-pressure chamber and the low-pressure chamber of the cylinder by a high-pressure passage and a low-pressure passage. The device can take the place of large-sized hydraulic presses to produce large-sized protective rings with good quality, and the device has the advantages of easy operation, safety, reliability, high universality of the molds, high finished product rate of protective rings, material saving, etc.
Description
The present invention relates to the special hydraulic apparatus of a kind of generator guard ring one class cylindrical shape forging stock bulging, reinforcement usefulness.
Hydraulic expanding-forming is advanced both at home and abroad at present retaining ring intensifying method, its bulging principle is: fill with liquid in the retaining ring blank that processes, and manage to make liquid to produce high pressure, under the effect of this highly pressurised liquid, the ring base radially constantly enlarges, and reaches the purpose of deformation strengthening.
Existing retaining ring hydraulic expanding-forming method is that the retaining ring base is placed on the prod cast, fills with liquid in the ring, and then, hydraulic press pressurizes to last prod cast, and liquid produces high pressure under the mould compressing, makes ring base expanding and reinforcing.Here liquid is constant volume.The circular section is long-pending in deformation force (axially total pressure) and liquid pressure and the ring base is directly proportional, if required deformation force surpasses the hydraulic press tonnage, can adorn one and subtract the power post in mould, to reduce the highly pressurised liquid active area, loads thereby reduce hydraulic press.But it is less that this method subtracts the power ability, and large-sized retaining ring bulging still needs more large-tonnage hydraulic press, even existing maximum tonnage hydraulic press can't be competent at.Secondly, adopt this power of subtracting post, for keeping the discharge opeing coefficient of short enough sizes, Die Cone Angle is compelled to do for a short time.The mould that cone angle is little, stroke is big, and the bulging amount is little, because the restriction that mould is met and discussed about being subjected to must increase shaping number of times and number of molds.Once more, subtract the sealing on the power post, as damaging in the bulging process, the ring base will produce abnormal property (toroidal), and cause scrapping.At last, no matter existing hydraulic expanding-forming method has or not to subtract the power post, and security is all relatively poor, encircles base for a certain reason in case ftracture, and crackle can continue rapid expansion under the hydraulic press effect, thereby may cause mould, equipment so that the personal safety accident.
The disclosed hydraulic expanding-forming technology of Russian Patent SU-287-659 is to unite with high-pressure pump and hydraulic press to be used as power, the highly pressurised liquid that the former provides bulging to use in ring cavity by the duct that subtracts in the power post, and the latter provides the sealing thrust between mould and retaining ring blank.Though this retaining ring expanding method can increase the power ability that subtracts, the bulging process is controlled, but still need take hydraulic press, and retaining ring local defect and cause in the bulging cracking and hydraulic press security incident still to be difficult to avoid.
The object of the present invention is to provide a kind ofly to be used as power with high-pressure pump, can replace the retaining ring expanding and reinforcing dedicated hydraulic device of large-scale hydraulic press, this apparatus structure compactness, closed frame are little, not only high-pressure system maintains static, can adjust pressure, and die change is convenient, safe and reliable.
Externally feeding type hydraulic devcie for swelling and strengthening protective ring provided by the invention, comprise hydraulic plumbing systems such as high-pressure pump that operating pressure is provided or booster, an isolated plant, isolated plant is subtracted power post parts such as (2) and is constituted by last prod cast (1), following prod cast (4), guiding.Subtract power post (2), through hole of the inner processing of following prod cast (4) in guiding, last prod cast (1) and guiding subtract between the power post (2) with sealing ring (13) sealing.Its main points are: go up prod cast (1), guiding subtracts power post (2), following prod cast (4) and outer fluid infusion cylinder body (5) are installed in the load-bearing frame (3) of a sealing, promptly go up prod cast (1) and be installed in load-bearing frame (3) top, outer fluid infusion cylinder body (5) is installed in the bottom of load-bearing frame (3), outer fluid infusion cylinder body (5) is made up of high-pressure chamber and low-pressure chamber, plunger (6) is installed in outer the benefit in the cylinder body (5), following prod cast (4), guiding subtracts power post (2) and plunger (6) is separately to make, plunger (6) center has a highly pressurised liquid passage and links to each other with the passage that guiding subtracts power post (2), highly pressurised liquid can enter in the retaining ring chamber along this passage, outside highly pressurised liquid enters in the high-pressure chamber of outer fluid infusion cylinder body (5) through high-pressure channel (8), and outside low pressure liquid enters in the low-pressure chamber of outer fluid infusion cylinder body (5) through low-pressure channel (7).
The course of work of externally feeding type hydraulic devcie for swelling and strengthening protective ring disclosed by the invention is described with reference to the accompanying drawings.
Accompanying drawing is a structural representation disclosed by the invention
In the accompanying drawing, (1) is last prod cast, and (2) subtract the power post for guiding, (3) be load-bearing frame, (4) be following prod cast, (5) are outer fluid infusion cylinder body, and (6) are plunger, (7) be that low-pressure channel (8) is a high-pressure channel, (9) be high-pressure chamber's sealing ring, (10) are low-pressure chamber's sealing ring, and (11) are the retaining ring base, (12) be passage, (13) subtract power column sealing ring for guiding.
Last prod cast (1), following prod cast (4) closed-loop base end all the time in retaining ring base (11) bulging process, guiding subtracts between power post (2) and last prod cast (1) endoporus has sealing ring (13) that highly pressurised liquid can not be revealed.The axial load that load-bearing frame (3) bears mold system makes it to constitute the stressed system of a sealing.During ring base bulging, at first that the hydraulic system adjustment is normal.To encircle base (11) and install with last prod cast (1), mould is moved in the framework, preparation is ready.Start high-pressure pump then, in the ring base, inject liquid, be full of the back and start low-lift pump, make prod cast (1) (4) and ring base (11) port sealing by high-pressure channel (8).Liquid pressure constantly raises in the sealing ring base, and outwards bulging takes place continuously subsequently.Change according to ring base size and dimension, can regulate the low pressure liquid supply pressure and be controlled.When ring base diameter reaches institute and requires size, close high and low press pump, open tapping valve (not shown figure on), mould is shifted out framework, take off the retaining ring behind the bulging, and then repeat the said process compacting next one and encircle base.
Liquid in the ring cavity is not constant volume, therefore, guiding subtracts the diameter of power post (2) and can do more as far as possible, promptly as far as possible near retaining ring base (11) internal diameter, like this, can reduce highly pressurised liquid greatly at axial active area on the one hand, thereby alleviate the load of load-bearing frame (3), can reduce the lateral dimension of upright of frame as far as possible.On the other hand, can reduce the shaping work step, want the ring base of twice shaping, on this device, once can finish with having the bulging method now.
The required operating pressure of retaining ring base bulging is directly provided by high-pressure pump or booster, if ring base end cracks, when crackle expands to a certain degree, certainly will cause ring cavity inner high voltage liquid to reveal, and liquid is release immediately, and bulging is ended automatically.So can the rapid CRACKING ACCIDENT of initial ring base, and ring base defective eliminate after bulging again still, unlikely scrapping.
The cone angle of last prod cast (1), following prod cast (4) mainly seals, and can do more much biggerly than existing hydraulic expanding die cone angle, thereby can get rid of the stuck and contention problem of mould fully.Simultaneously, can realize the be shaped retaining ring of several specifications of a mold, enlarge the versatility of mould because the mold structure parameter of this device requires not sternly.
Outer fluid infusion cylinder body (5) is divided into high-pressure chamber and low-pressure chamber's two parts, so not only can very easily set up initial high pressure, and can regulate pressure size on the collar extension easily, and can according to circumstances interrupt and recover bulging at any time, realized artificial control to being shaped.Destroy if guiding subtracts power post (2) upper sealing ring (13), bulging will stop automatically.Sealing ring can recover bulging after changing, and forming accuracy is had no effect, and can not produce the existing such deformity of bulging method.
The pressure of highly pressurised liquid is many times of low pressure liquid pressure, high pressure liquid physical efficiency in the very little high-pressure chamber of diameter gives plunger (6) with very big thrust, become the important component part of sealing thrust, the diameter that therefore can significantly dwindle low pressure (LP) cylinder can make whole device that enough sealing thrusts are provided.Dwindling of low-pressure chamber's diameter makes the size of framework correspondingly dwindle, weight saving, and the pressure adjustable range still is fully guaranteed.
Because external high pressure liquid is not to enter with the following prod cast (4) that moves up and down, but enter from high-pressure chamber's passage of outer fluid infusion cylinder body (5), therefore, the outer high pressure liquid-supplying system of mould is fixed, structure is quite simple and reliable, and die change is very convenient, needn't frequently install and remove the high-pressure and hydraulic pipeline.
The outer liquid repairing expansion-shape method has not only kept the advantage of existing hydraulic expanding-forming method, and solution preferably the problem that exists in producing of present retaining ring. This apparatus structure compactness can replace large-scale hydraulic press and produce large-scale high-quality retaining ring, and easy and simple to handle, safe and reliable, be easy to realize automatically detect and automatically control, be conducive to set up professional retaining ring production line.
This shows, this device has the mould highly versatile, retaining ring yield rate height, the forming accuracy height is saved the advantages such as material.
Claims (1)
1, a kind of outer supplementing type retaining ring hydraulic expanding type intensifying device, comprise prod cast (1), following prod cast (4), guiding subtracts power post parts such as (2) and constitutes, subtract an inside processing passage (12) of power post (2) in guiding, the chamber of one end of passage (12) and outer fluid infusion cylinder body (5) communicates, other end opening is opened the middle part that subtracts column (2) in guiding, last prod cast (1) and guiding subtract between the power post (2) with sealing ring (13) sealing, it is characterized in that: go up prod cast (1), guiding subtracts power post (2), following prod cast (4), outer fluid infusion cylinder body (5) is installed in the load-bearing frame (3) of a sealing, outer fluid infusion cylinder body (5) is made up of high-pressure chamber and low-pressure chamber, plunger (6) is installed in the outer fluid infusion cylinder body (5), plunger (6) center has a highly pressurised liquid passage and links to each other with the passage that guiding subtracts power post (2), outside height, low pressure liquid is through too high, low-pressure channel (8), (7) enter the height of outer fluid infusion cylinder body (5) respectively, in the low-pressure chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103861 CN1015328B (en) | 1988-06-23 | 1988-06-23 | Externally feeding type hydraulic devcie for swelling and strengthening protective ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103861 CN1015328B (en) | 1988-06-23 | 1988-06-23 | Externally feeding type hydraulic devcie for swelling and strengthening protective ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1038779A CN1038779A (en) | 1990-01-17 |
| CN1015328B true CN1015328B (en) | 1992-01-29 |
Family
ID=4832794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103861 Expired CN1015328B (en) | 1988-06-23 | 1988-06-23 | Externally feeding type hydraulic devcie for swelling and strengthening protective ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015328B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756033B (en) * | 2011-04-27 | 2015-09-30 | 上海汇众汽车制造有限公司 | The quick liquid-filling shaping method and system of multilayer pipe |
| CN102941273A (en) * | 2012-11-16 | 2013-02-27 | 太原科技大学 | Super-pressure hydraulic tensioner ring reinforcing device |
| JP6670543B2 (en) * | 2014-12-11 | 2020-03-25 | 住友重機械工業株式会社 | Molding apparatus and molding method |
| CN107511419A (en) * | 2017-09-26 | 2017-12-26 | 太原科技大学 | A kind of ultrahigh-pressure hydraulic contracting ring intensifying device |
| CN112728412B (en) * | 2020-12-04 | 2023-03-21 | 天津天锻航空科技有限公司 | Full-isolation type emulsion system of liquid-filling forming hydraulic machine |
-
1988
- 1988-06-23 CN CN 88103861 patent/CN1015328B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038779A (en) | 1990-01-17 |
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