CN103033375A - Double-layer hydraulic cylinder calibration device - Google Patents
Double-layer hydraulic cylinder calibration device Download PDFInfo
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- CN103033375A CN103033375A CN2012105012684A CN201210501268A CN103033375A CN 103033375 A CN103033375 A CN 103033375A CN 2012105012684 A CN2012105012684 A CN 2012105012684A CN 201210501268 A CN201210501268 A CN 201210501268A CN 103033375 A CN103033375 A CN 103033375A
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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 the hotdie forging press field, relate in particular to 50-120MN hotdie forging press nominal pressure caliberating device.
Background technology
Dispatching from the factory of each hotdie forging press all will calibrate with calibration tool the nominal pressure of pressing machine, and the nominal pressure caliberating device of prior art is the single hydraulic cylinder caliberating device.The deficiency of the caliberating device of prior art is: because the demarcation medium working pressure of heavy hotdie forging press high (up to 75MPa), stroke short (only 20mm), add and limited by die space, so that cylinder diameter can not increase, can not load the load of elevated pressures, therefore the demarcation of nominal pressure is restricted, and can not realize that 100% demarcates.
Summary of the invention
The purpose of this invention is to provide a kind of device that can demarcate the demarcation of 50-120MN hotdie forging press 100% nominal pressure, overcome the deficiencies in the prior art.
Technical scheme of the present invention is; Double-layer hydraulic cylinder caliberating device, comprise the hydraulic calibration cylinder, the hydraulic calibration cylinder comprises cylinder body and plunger, the bottom of casing wall has oil supply hole, round-corner transition between cylinder bottom and the casing wall, it is characterized in that described hydraulic calibration cylinder is that double-layer hydraulic is demarcated 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 installed in the lower cylinder body, seal between lower plunger dish and the lower cylinder body, described upper cylinder body cylinder bottom has the hole of matching with the lower plunger handle, the described upper plug face of trying to get to the heart of a matter is provided with the groove that matches with lower plunger pommel section, the borehole jack of upper cylinder body cylinder bottom is contained on the lower plunger handle, and seal between the lower plunger handle, upper cylinder body bottom surface and lower cylinder body casing wall end face connect, closely be connected by the cylinder bolt that is arranged in the two cylinder body casing walls between lower cylinder body and the upper cylinder body, upper plug is loaded in the upper cylinder body, seal between upper plug dish and the upper cylinder body, the try to get to the heart of a matter groove of face of upper plug is sleeved on lower plunger pommel section, groove floor and lower plunger pommel face connect, upper plug is tried to get to the heart of a matter and is sealed between the groove of face and the lower plunger handle, closely be connected with the plunger bolt between upper plug and the lower plunger, described gland middle part has the hole of matching with the upper plug handle, gland is sleeved on the upper plug handle, be provided with dust ring between gland and the upper plug handle, gland is fastened on the upper cylinder body by gland bolt.
Double-layer hydraulic cylinder caliberating device of the present invention is characterized in that between sealing, lower plunger dish and the lower cylinder body between sealing, upper plug and the lower plunger between described upper cylinder body and the lower plunger handle that being sealed into the O RunddichtringO between sealing and upper plug dish and the upper cylinder body adds retaining ring sealing.
Double-layer hydraulic cylinder caliberating device of the present invention, the aperture that it is characterized in that 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 caliberating device of the present invention, the fillet that it is characterized in that round-corner transition between described cylinder body and the casing wall is R10-R50.
Double-layer hydraulic cylinder caliberating device of the present invention is characterized in that described casing wall bottom oil-in is the sealed tube threaded hole.
The invention has the beneficial effects as follows:
(1) this calibration tool applied range has been realized the demarcation of 50-120MN hotdie forging press 100% nominal pressure, has realized that namely a station symbol decides instrument to the demarcation of multiple devices.
(2) demarcate the cylinder cylinder body and adopt up and down two-layer cylinder structure, all adopt piston structure, and cylinder plug adopts bolt-connection up and down, has effectively realized the stack of power.
(3) round-corner transition after employing is optimized between cylinder bottom and the casing wall, stress is concentrated and is reduced to minimum.
(4) the sealing twice structural shape of hydraulic cylinder, per pass adopt O type circle to add the sealing means of back-up ring, add the cooperation of seal clearance, have effectively played the effect of sealing, and the actual proving effect that uses is very good.
(5) oil-in of cylinder is the sealed tube screw thread up and down, can effectively prevent from revealing.
Description of drawings
The present invention has two width of cloth accompanying drawings, wherein
Fig. 1 is double-layer hydraulic caliberating device cross-sectional schematic.
Fig. 2 is the local enlarged diagram of sealing 6.
In the accompanying drawing: 1, lower cylinder body; 2, lower plunger; 3, cylinder bolt; 4, upper cylinder body; 5, upper plug; 6, sealing; 6-1, O type circle; 6-2, back-up ring; 7, gland bolt; 8, gland; 9, dust ring; 10, plunger bolt.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Double-layer hydraulic cylinder caliberating device comprises: lower cylinder body 1, lower plunger 2, upper cylinder body 4, upper plug 5 and pressure 8 lids, lower plunger 2 is installed in the lower cylinder body 1, sealing between lower plunger dish and the lower cylinder body 1, upper cylinder body 4 cylinder bottoms have the hole of matching with the lower plunger handle, the upper plug face of trying to get to the heart of a matter is provided with the groove that matches with lower plunger pommel section, the borehole jack of upper cylinder body 4 cylinder bottoms is contained on the lower plunger handle, and seal between the lower plunger handle, upper cylinder body 4 bottom surfaces and lower cylinder body 1 casing wall end face connect, closely be connected by the cylinder bolt 3 that is arranged in the two cylinder body casing walls between lower cylinder body 1 and the upper cylinder body 4, upper plug 5 is loaded in the upper cylinder body 4, sealing between upper plug dish and the upper cylinder body 4, the try to get to the heart of a matter groove of face of upper plug is sleeved on lower plunger pommel section, groove floor and lower plunger pommel face connect, upper plug is tried to get to the heart of a matter and is sealed between the groove of face and the lower plunger handle, closely be connected with plunger bolt 10 between upper plug 5 and the lower plunger 2, gland 8 middle parts have the hole of matching with the upper plug handle, gland 8 is sleeved on the upper plug handle, be provided with dust ring 9 between gland 8 and the upper plug handle, gland 8 is solid on upper cylinder body 4 by gland bolt tight 7, the sealing between upper cylinder body and the lower plunger handle, sealing between upper plug and the lower plunger, be sealed into the O RunddichtringO between sealing and upper plug dish and the upper cylinder body between lower plunger dish and the 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.The fillet of round-corner transition is R10-R50 between cylinder body and the casing wall.Lower cylinder body 1 is the sealed tube threaded hole with upper cylinder body 4 casing walls bottom oil-in.
During installation, at first will seal 6 (totally 7 places) and be contained on lower plunger 2 and the upper plug 5, lower plunger 2 will be packed in the lower cylinder body 1; Secondly upper cylinder body 4 was overlapped upper plug 5 and leaned against on the lower cylinder body 1, and upper plug was put into upper cylinder body 1 be close to lower plunger 2; Then fixing upper cylinder body 1 and upper plug 5 respectively by bolt 3 and bolt 10; The gland 8 that dust ring 9 will be housed at last is contained on the upper cylinder body 4 by bolt 7.
The engineering pressure timing signal, lower cylinder body 1 and upper cylinder body 4 simultaneously oil-feeds, the oil supply hole of lower cylinder body 1 is larger than the oil supply hole of upper cylinder body 4, can guarantee that lower plunger 2 and upper plug 5 are the same with lower, the bolt 10 of avoiding connecting upper and lower plunger bears larger pulling force and ruptures, and causes the separation of two plungers.
Claims (5)
1. double-layer hydraulic cylinder caliberating device, comprise the hydraulic calibration cylinder, hydraulic calibration cylinder cylinder comprises cylinder body and plunger, the bottom of casing wall has oil supply hole, round-corner transition between cylinder bottom and the casing wall, it is characterized in that described hydraulic calibration cylinder is that double-layer hydraulic is demarcated 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 installed in the lower cylinder body (1), sealing between lower plunger dish and the lower cylinder body (1), described upper cylinder body (4) cylinder bottom has the hole of matching with the lower plunger handle, the described upper plug face of trying to get to the heart of a matter is provided with the groove that matches with lower plunger pommel section, the borehole jack of upper cylinder body (4) cylinder bottom is contained on the lower plunger handle, and seal between the lower plunger handle, upper cylinder body (4) bottom surface and lower cylinder body (1) casing wall end face connect, closely be connected by the cylinder bolt (3) that is arranged in the two cylinder body casing walls between lower cylinder body (1) and the upper cylinder body (4), upper plug (5) is loaded in the upper cylinder body (4), sealing between upper plug dish and the upper cylinder body (4), the try to get to the heart of a matter groove of face of upper plug is sleeved on lower plunger pommel section, groove floor and lower plunger pommel face connect, upper plug is tried to get to the heart of a matter and is sealed between the groove of face and the lower plunger handle, closely be connected with plunger bolt (10) between upper plug (5) and the lower plunger (2), described gland (8) middle part has the hole of matching with the upper plug handle, gland (8) is sleeved on the upper plug handle, be provided with dust ring (9) between gland (8) and the upper plug handle, gland (8) is fastened on the upper cylinder body (4) by gland bolt (7).
2. described double-layer hydraulic cylinder caliberating device according to claim 1 is characterized in that being sealed between the sealing and upper plug dish and upper cylinder body (4) between sealing, lower plunger dish and the lower cylinder body (1) between sealing, upper plug (5) and the lower plunger (2) between described upper cylinder body (4) and the lower plunger handle O RunddichtringO (6-1) and adds back-up ring (6-2) and seal.
3. described double-layer hydraulic cylinder caliberating device according to claim 1, the aperture that it is characterized in that described upper cylinder body (4) oil supply hole is the 3/5-4/5 in lower cylinder body (1) oil supply hole aperture.
4. described double-layer hydraulic cylinder caliberating device according to claim 1, the fillet that it is characterized in that round-corner transition between described cylinder body and the casing wall is R10-R50.
5. described double-layer hydraulic cylinder caliberating device according to claim 1 is characterized in that described casing wall bottom oil-in is the 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103033375A true CN103033375A (en) | 2013-04-10 |
| CN103033375B CN103033375B (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
|---|
| 毕齐林等: "大型液压机实际压力达标检测的一种新方法", 《装备制造技术》 * |
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| CN103033375B (en) | 2015-02-04 |
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