CN103033375B - Double-layer hydraulic cylinder calibration device - Google Patents
Double-layer hydraulic cylinder calibration device Download PDFInfo
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- CN103033375B CN103033375B CN201210501268.4A CN201210501268A CN103033375B CN 103033375 B CN103033375 B CN 103033375B CN 201210501268 A CN201210501268 A CN 201210501268A CN 103033375 B CN103033375 B CN 103033375B
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Abstract
A double-layer hydraulic cylinder calibration device comprises a double-layer hydraulic calibration cylinder. The double-layer hydraulic calibration cylinder comprises a lower cylinder body, a lower plunger piston, an upper cylinder body, an upper plunger piston and a pressing cover, wherein the a hole matched with the lower plunger piston is formed at the bottom of the upper cylinder body, the bottom surface of an upper plunger piston disc is provided with a concave groove matched with the end portion of a lower plunger piston handle, the lower plunger piston handle is sleeved in the hole at the bottom of the upper cylinder body, the bottom surface of the upper cylinder body abuts against the top surface of the wall of the lower cylinder body in a connecting mode, the lower cylinder body is tightly connected with the lower cylinder body through a cylinder body bolt arranged in the two cylinder bodies, the upper plunger piston is arranged in the upper cylinder body, the end portion of the lower plunger piston handle is sleeved in the groove at the bottom surface of the upper plunger piston, the upper plunger piston is tightly connected with the lower plunger piston through a plunger piston bolt, and the pressing cover is tightened on the upper cylinder body through pressing cover bolts. The double-layer hydraulic calibration cylinder has the advantages that filleted corner transition is adopted between cylinder bottoms and cylinder walls, the stress concentration is small, oil inlets of the upper cylinder body and the lower cylinder body are seal pipe threaded holes, and leakage is effectively prevented.
Description
Technical field
The invention belongs to hotdie forging press field, particularly relate to 50-120MN hotdie forging press nominal pressure caliberating device.
Background technology
Dispatching from the factory of each hotdie forging press all calibrates the nominal pressure of pressing machine with calibration tool, the nominal pressure caliberating device of prior art is single hydraulic cylinder caliberating device.The deficiency of the caliberating device of prior art is: due to the demarcation media operation pressure high (up to 75MPa) of heavy hotdie forging press, stroke short (only 20mm), add and to limit by die space, cylinder diameter can not be increased, the load of elevated pressures can not be loaded, therefore the demarcation of nominal pressure is restricted, and can not realize 100% demarcation.
Summary of the invention
The object of this invention is to provide a kind of device can demarcated 50-120MN hotdie forging press 100% nominal pressure and demarcate, overcome the deficiencies in the prior art.
Technical scheme of the present invention is, double-layer hydraulic cylinder calibration device, comprise hydraulic calibration cylinder, hydraulic calibration cylinder comprises cylinder body and plunger, the bottom of casing wall has oil supply hole, round-corner transition between cylinder bottom and casing wall, it is characterized in that described hydraulic calibration cylinder is that double-layer hydraulic demarcates cylinder, described double-layer hydraulic is demarcated cylinder and is comprised: lower cylinder body, lower plunger, upper cylinder body, upper plug and gland, described lower plunger is arranged in lower cylinder body, seal between lower plunger dish and lower cylinder body, described upper cylinder body cylinder bottom has the hole of matching with lower plunger handle, the described upper plug face of trying to get to the heart of a matter is provided with the groove with lower plunger handle matching ends, the borehole jack of upper cylinder body cylinder bottom is contained on lower plunger handle, and seal between lower plunger handle, upper cylinder body bottom surface and lower cylinder body casing wall end face connect, by being arranged on the cylinder bolt compact siro spinning technology in two cylinder body casing walls between lower cylinder body and upper cylinder body, upper plug is loaded in upper cylinder body, seal between upper plug dish and upper cylinder body, the try to get to the heart of a matter groove in face of upper plug is sleeved on lower plunger pommel portion, groove floor and lower plunger pommel face connect, upper plug is tried to get to the heart of a matter between the groove in face and lower plunger handle and is sealed, with plunger bolt compact siro spinning technology between upper plug and lower plunger, the hole of matching with upper plug handle is had in the middle part of described gland, gland is sleeved on upper plug handle, dust ring is provided with between gland and upper plug handle, gland is fastened on upper cylinder body by gland bolt.
Double-layer hydraulic cylinder calibration device of the present invention, is characterized in that the sealing between described upper cylinder body and lower plunger handle, sealing between upper plug and lower plunger, seals and be sealed between upper plug dish and upper cylinder body O RunddichtringO add retaining ring sealing between lower plunger dish and lower cylinder body.
Double-layer hydraulic cylinder calibration device of the present invention, is characterized in that the aperture of described upper cylinder body oil supply hole is the 3/5-4/5 in lower cylinder body oil supply hole aperture.
Double-layer hydraulic cylinder calibration device of the present invention, is characterized in that the fillet of round-corner transition between described cylinder body and casing wall is R10-R50.
Double-layer hydraulic cylinder calibration device of the present invention, is characterized in that bottom described casing wall, oil-in is sealed tube threaded hole.
The invention has the beneficial effects as follows:
(1) this calibration tool applied range, achieves the demarcation of 50-120MN hotdie forging press 100% nominal pressure, namely achieves a calibration tool to the demarcation of multiple devices.
(2) demarcate cylinder cylinder body and adopt upper and lower two-layer cylinder structure, all adopt piston structure, and cylinder plug adopts bolt-connection up and down, have effectively achieved the superposition of power.
(3) between cylinder bottom and casing wall adopt optimize after round-corner transition, stress concentrate be reduced to minimum.
(4) the sealing twice structural shape of hydraulic cylinder, per pass adopts O type circle to add the sealing means of back-up ring, adds the cooperation of seal clearance, effectively serves the effect of sealing, and the actual proving effect that uses is very good.
(5) the oil-in system sealed tube screw thread of upper and lower cylinder, can prevent from revealing effectively.
Accompanying drawing explanation
The present invention has two width accompanying drawings, wherein
Fig. 1 is double-layer hydraulic caliberating device cross-sectional schematic.
Fig. 2 is the close-up schematic view of sealing 6.
In accompanying drawing: 1, lower cylinder body; 2, lower plunger; 3, cylinder bolt; 4, upper cylinder body; 5, upper plug; 6, seal; 6-1, O type circle; 6-2, back-up ring; 7, gland bolt; 8, gland; 9, dust ring; 10, plunger bolt.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Double-layer hydraulic cylinder calibration device comprises: lower cylinder body 1, lower plunger 2, upper cylinder body 4, upper plug 5 and pressure 8 lid, lower plunger 2 is arranged in lower cylinder body 1, seal between lower plunger dish and lower cylinder body 1, upper cylinder body 4 cylinder bottom has the hole of matching with lower plunger handle, the upper plug face of trying to get to the heart of a matter is provided with the groove with lower plunger handle matching ends, the borehole jack of upper cylinder body 4 cylinder bottom is contained on lower plunger handle, and seal between lower plunger handle, upper cylinder body 4 bottom surface and lower cylinder body 1 casing wall end face connect, by being arranged on cylinder bolt 3 compact siro spinning technology in two cylinder body casing walls between lower cylinder body 1 and upper cylinder body 4, upper plug 5 is loaded in upper cylinder body 4, seal between upper plug dish and upper cylinder body 4, the try to get to the heart of a matter groove in face of upper plug is sleeved on lower plunger pommel portion, groove floor and lower plunger pommel face connect, upper plug is tried to get to the heart of a matter between the groove in face and lower plunger handle and is sealed, with plunger bolt 10 compact siro spinning technology between upper plug 5 and lower plunger 2, the hole of matching with upper plug handle is had in the middle part of gland 8, gland 8 is sleeved on upper plug handle, dust ring 9 is provided with between gland 8 and upper plug handle, gland 8 is solid on upper cylinder body 4 by gland bolt tight 7, sealing between upper cylinder body and lower plunger handle, sealing between upper plug and lower plunger, seal and be sealed between upper plug dish and upper cylinder body O RunddichtringO between lower plunger dish and lower cylinder body and add retaining ring sealing.The aperture of upper cylinder body oil supply hole is the 3/5-4/5 in lower cylinder body oil supply hole aperture.Between cylinder body and casing wall, the fillet of round-corner transition is R10-R50.Bottom lower cylinder body 1 and upper cylinder body 4 casing wall, oil-in is sealed tube threaded hole.
During installation, first sealing 6 (totally 7 places) is contained on lower plunger 2 and upper plug 5, lower plunger 2 is loaded in lower cylinder body 1; Secondly upper cylinder body 4 being overlapped upper plug 5 leans against on lower cylinder body 1, upper plug is put into upper cylinder body 1 and is close to lower plunger 2; Then respectively upper cylinder body 1 and upper plug 5 are fixed by bolt 3 and bolt 10; Finally the gland 8 that dust ring 9 is housed is contained on upper cylinder body 4 by bolt 7.
Engineering pressure timing signal, the oil-feed simultaneously of lower cylinder body 1 and upper cylinder body 4, the oil supply hole of lower cylinder body 1 is larger than the oil supply hole of upper cylinder body 4, can ensure lower plunger 2 and upper plug 5 the same with under, avoid the bolt 10 connecting upper and lower plunger bear larger pulling force and rupture, cause the separation of two plungers.
Claims (5)
1. double-layer hydraulic cylinder calibration device, comprise hydraulic calibration cylinder, hydraulic calibration cylinder comprises cylinder body and plunger, the bottom of casing wall has oil supply hole, round-corner transition between cylinder bottom and casing wall, it is characterized in that described hydraulic calibration cylinder is that double-layer hydraulic demarcates cylinder, described double-layer hydraulic is demarcated cylinder and is comprised: lower cylinder body (1), lower plunger (2), upper cylinder body (4), upper plug (5) and gland (8), described lower plunger (2) is arranged in lower cylinder body (1), seal between lower plunger dish and lower cylinder body (1), described upper cylinder body (4) cylinder bottom has the hole of matching with lower plunger handle, the described upper plug face of trying to get to the heart of a matter is provided with the groove with lower plunger handle matching ends, the borehole jack of upper cylinder body (4) cylinder bottom is contained on lower plunger handle, and seal between lower plunger handle, upper cylinder body (4) bottom surface and lower cylinder body (1) casing wall end face connect, by being arranged on cylinder bolt (3) compact siro spinning technology in two cylinder body casing walls between lower cylinder body (1) and upper cylinder body (4), upper plug (5) is loaded in upper cylinder body (4), seal between upper plug dish and upper cylinder body (4), the try to get to the heart of a matter groove in face of upper plug is sleeved on lower plunger pommel portion, groove floor and lower plunger pommel face connect, upper plug is tried to get to the heart of a matter between the groove in face and lower plunger handle and is sealed, with plunger bolt (10) compact siro spinning technology between upper plug (5) and lower plunger (2), described gland (8) middle part has the hole of matching with upper plug handle, gland (8) is sleeved on upper plug handle, dust ring (9) is provided with between gland (8) and upper plug handle, gland (8) is fastened on upper cylinder body (4) by gland bolt (7).
2. double-layer hydraulic cylinder calibration device according to claim 1, is characterized in that the sealing between described upper cylinder body (4) and lower plunger handle, sealing between upper plug (5) and lower plunger (2), seals and be sealed between upper plug dish and upper cylinder body (4) O RunddichtringO (6-1) add back-up ring (6-2) and seal between lower plunger dish and lower cylinder body (1).
3. double-layer hydraulic cylinder calibration device according to claim 1, is characterized in that the aperture of described upper cylinder body (4) oil supply hole is the 3/5-4/5 in lower cylinder body (1) oil supply hole aperture.
4. double-layer hydraulic cylinder calibration device according to claim 1, is characterized in that the fillet of round-corner transition between described cylinder body and casing wall is R10-R50.
5. double-layer hydraulic cylinder calibration device according to claim 1, is characterized in that bottom described casing wall, oil-in is sealed tube threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210501268.4A CN103033375B (en) | 2012-11-29 | 2012-11-29 | Double-layer hydraulic cylinder calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210501268.4A CN103033375B (en) | 2012-11-29 | 2012-11-29 | Double-layer hydraulic cylinder calibration device |
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| Publication Number | Publication Date |
|---|---|
| CN103033375A CN103033375A (en) | 2013-04-10 |
| CN103033375B true CN103033375B (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210501268.4A Active CN103033375B (en) | 2012-11-29 | 2012-11-29 | Double-layer hydraulic cylinder calibration device |
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| CN (1) | CN103033375B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206164A (en) * | 2007-12-06 | 2008-06-25 | 上海交通大学 | Device and method for testing and standardizing performance of macrotype over-loading operation equipment |
| CN202994501U (en) * | 2012-11-29 | 2013-06-12 | 一重集团大连设计研究院有限公司 | A double-layer hydraulic cylinder calibrating device |
-
2012
- 2012-11-29 CN CN201210501268.4A patent/CN103033375B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206164A (en) * | 2007-12-06 | 2008-06-25 | 上海交通大学 | Device and method for testing and standardizing performance of macrotype over-loading operation equipment |
| CN202994501U (en) * | 2012-11-29 | 2013-06-12 | 一重集团大连设计研究院有限公司 | A double-layer hydraulic cylinder calibrating device |
Non-Patent Citations (1)
| Title |
|---|
| 大型液压机实际压力达标检测的一种新方法;毕齐林等;《装备制造技术》;20091231(第12期);91-92 * |
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| CN103033375A (en) | 2013-04-10 |
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