CN203614559U - Anti-looseness device for stand column nut of hydraulic machine - Google Patents
Anti-looseness device for stand column nut of hydraulic machine Download PDFInfo
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- CN203614559U CN203614559U CN201320688321.6U CN201320688321U CN203614559U CN 203614559 U CN203614559 U CN 203614559U CN 201320688321 U CN201320688321 U CN 201320688321U CN 203614559 U CN203614559 U CN 203614559U
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- stand column
- plunger
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- nut
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- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 abstract 2
- 239000007924 injection Substances 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to an anti-looseness device for a stand column nut of a hydraulic machine. The upper part of a stand column extends outside an upper cross beam; the top of the stand column is screwed with the stand column nut; a cylinder body of a ring-shaped oil cylinder is pressed by the lower end surface of the stand column nut; the ring-shaped oil cylinder and the stand column are arranged in a coaxial way, and the lower end of the cylinder body is supported on the upper cross beam; a plunger is arranged on an inner cavity of the cylinder body of the ring-shaped oil cylinder; the plunger is sealed with the inner wall of the cylinder body by a sealing ring; the upper cross beam is pressed by the lower end surface of the plunger; the side wall of the cylinder body of the ring-shaped oil cylinder is provided with an oil injection hole communicated with the inner cavity of the cylinder body; the oil injection hole is connected with a high pressure oil pipe of the hydraulic machine. When the hydraulic machine works, the high pressure oil pipe maintains the oil pressure all the time, the plunger ejects downwards after the high pressure oil is filled into the inner cavity of the ring-shaped oil cylinder, and pretightening force is generated between the stand column nut and the upper cross beam by the plunger and the cylinder body; as long as the oil pressure exists, the pretightening force is maintained all the time, and the stand column nut does not loose due to long-time use.
Description
Technical field
The utility model relates to a kind of hydraulic press, particularly a kind of locking device of hydraulic machine upright post nut.
Background technique
The pretension of hydraulic machine upright post nut and locking be that every hydraulic press is requisite, the locking of existing hydraulic machine upright post nut is mainly to complete pretension by the master cylinder application of force, and upright nut top is spaced in intervals and is provided with lock nut, pass lock nut by screw and be screwed into upright nut, screw screw, between lock nut and upright nut, produce pretightening force and play locking effect.This structure, after long-time use, still can cause upright nut loosening, if need to again compress, just need to climb to lathe top, has potential safety hazard.
Model utility content
The purpose of this utility model is, overcomes problems of the prior art, and a kind of locking device of hydraulic machine upright post nut more is reliably provided.
For solving above technical problem, the locking device of a kind of hydraulic machine upright post nut provided by the utility model, stretch out outside upper beam on column top, column top is connected with upright nut, the lower end surface of described upright nut is pressed on the cylinder body of annular cylinder, described annular cylinder and described column coaxial line and cylinder body lower end are supported on described upper beam, the inner chamber of cylinder block of described annular cylinder is provided with plunger, between described plunger and inboard wall of cylinder block, realize sealing by seal ring, the lower end surface of described plunger is pressed on described upper beam, the cylinder side wall of described annular cylinder is provided with the pouring orifice communicating with inner chamber of cylinder block, described pouring orifice is connected with the high-pressure oil pipe of hydraulic press.
With respect to prior art, the utility model has been obtained following beneficial effect: hydraulic press is in the time of work, its high-pressure oil pipe remains oil pressure, the inner chamber of annular cylinder passes into after high pressure oil, plunger ejects downwards, and plunger and cylinder body produce pretightening force between upright nut and upper beam, as long as oil pressure exists, this pretightening force remains, can not become flexible because of long-time use.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, accompanying drawing only provides reference and explanation use, non-in order to limit the utility model.
Fig. 1 is the structural representation of the locking device of the utility model hydraulic machine upright post nut.
In figure: 1. column; 2. upper beam; 3. upright nut; 4a. cylinder body; 4b. plunger; 4c. pouring orifice; 5. seal ring.
Embodiment
As shown in Figure 1, the locking device of the utility model hydraulic machine upright post nut, stretch out outside upper beam 2 on column 1 top, column 1 top is connected with upright nut 3, the lower end surface of upright nut 3 is pressed on the cylinder body 4a of annular cylinder, annular cylinder and column 1 coaxial line and cylinder body 4a lower end are supported on upper beam 2, the inner chamber of cylinder block of annular cylinder is provided with plunger 4b, between plunger 4b and cylinder body 4a inwall, realize sealing by seal ring 5, the lower end surface of plunger 4b is pressed on upper beam 2, the cylinder side wall of annular cylinder is provided with the pouring orifice 4c communicating with inner chamber of cylinder block, pouring orifice 4c is connected with the high-pressure oil pipe of hydraulic press.
Hydraulic press is in the time of work, its high-pressure oil pipe remains oil pressure, the inner chamber of annular cylinder passes into after high pressure oil, plunger 4b ejects downwards, plunger 4b and cylinder body 4a produce pretightening force between upright nut 3 and upper beam 2, as long as oil pressure exists, this pretightening force remains, can not become flexible because of long-time use.
The foregoing is only the better possible embodiments of the utility model, non-ly therefore limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (1)
1. the locking device of a hydraulic machine upright post nut, stretch out outside upper beam on column top, column top is connected with upright nut, it is characterized in that: the lower end surface of described upright nut is pressed on the cylinder body of annular cylinder, described annular cylinder and described column coaxial line and cylinder body lower end are supported on described upper beam, the inner chamber of cylinder block of described annular cylinder is provided with plunger, between described plunger and inboard wall of cylinder block, realize sealing by seal ring, the lower end surface of described plunger is pressed on described upper beam, the cylinder side wall of described annular cylinder is provided with the pouring orifice communicating with inner chamber of cylinder block, described pouring orifice is connected with the high-pressure oil pipe of hydraulic press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688321.6U CN203614559U (en) | 2013-11-04 | 2013-11-04 | Anti-looseness device for stand column nut of hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688321.6U CN203614559U (en) | 2013-11-04 | 2013-11-04 | Anti-looseness device for stand column nut of hydraulic machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614559U true CN203614559U (en) | 2014-05-28 |
Family
ID=50767208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320688321.6U Expired - Fee Related CN203614559U (en) | 2013-11-04 | 2013-11-04 | Anti-looseness device for stand column nut of hydraulic machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614559U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275956A (en) * | 2015-11-04 | 2016-01-27 | 北方重工集团有限公司 | Cone nut for hydraulic machine |
| CN110259597A (en) * | 2019-06-21 | 2019-09-20 | 钟建斌 | A kind of new Joining Structure between valve mechanism cover and cylinder head |
-
2013
- 2013-11-04 CN CN201320688321.6U patent/CN203614559U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275956A (en) * | 2015-11-04 | 2016-01-27 | 北方重工集团有限公司 | Cone nut for hydraulic machine |
| CN105275956B (en) * | 2015-11-04 | 2017-10-20 | 北方重工集团有限公司 | A kind of hydraulic press cone nut |
| CN110259597A (en) * | 2019-06-21 | 2019-09-20 | 钟建斌 | A kind of new Joining Structure between valve mechanism cover and cylinder head |
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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: 20140528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |