CN202414994U - Hang-up buffering oil line for turning device of crane - Google Patents
Hang-up buffering oil line for turning device of crane Download PDFInfo
- Publication number
- CN202414994U CN202414994U CN2011205663968U CN201120566396U CN202414994U CN 202414994 U CN202414994 U CN 202414994U CN 2011205663968 U CN2011205663968 U CN 2011205663968U CN 201120566396 U CN201120566396 U CN 201120566396U CN 202414994 U CN202414994 U CN 202414994U
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- Prior art keywords
- crane
- buffering
- oil
- hang
- turning device
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- Expired - Lifetime
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Abstract
The utility model relates to the field of hydraulic system of a crane, and aims at providing a hang-up buffering oil line for a turning device of a crane, which is high in safety factor and capable of effectively buffering the impact of a crane arm to a base when the turning device of the crane is suddenly stopped by accident. The hang-up buffering oil line comprises a bi-directional hydraulic motor provided with a leakage port and two oil inlets, a brake oil cylinder, and a bi-directional balance valve used for balancing and stabilizing the turning device during running and connected with the two oil inlets of the bi-directional hydraulic motor; and the hang-up buffering oil line for the turning device of the crane further comprises a bi-directional buffer valve block which is provided with an oil drainage port and two inlet ends, and the two inlet ends of the bi-directional buffer valve block are connected with the two oil inlets of the bi-directional hydraulic motor respectively. The hang-up buffering oil line for the turning device of the crane can effectively buffer the impact of the crane arm to the base when the turning device of the crane is suddenly stopped by accident, and also is high in safety factor.
Description
Technical field
The utility model relates to the crane hydraulic system field, the crane rotation device hang-up buffering oil circuit that impact energy effectively cushions and safety factor is high that crane jib produced pedestal when especially a kind of turning gear at hoisting crane stopped suddenly because of accident.
Background technology
Bidirectional balanced valve is installed in the be everlasting AB mouth loop of HM Hydraulic Motor of the hydraulic efficiency pressure system of hoisting crane, make the turning gear of hydraulic lift keep in the running balance with steadily; The disclosure of the Invention of Chinese patent notification number CN102261354A a kind of hydraulically balanced valve; Comprise application valve cover and main valve body; Have in the application valve cover and the relative and coaxial ladder blind hole of control spool, and application valve cover is provided with the control port of the big footpath section that is communicated with blind hole, the path section connection cavity volume of blind hole; Big footpath section is equipped with the plugging part of shutoff path section; The diameter of plugging part is at convergent on the direction of said path section, and the shutoff fitting surface of plugging part and path section is provided with throttling channel, and the cross-sectional area of throttling channel increases progressively vertically.Then the oil duct of control oil entering is in the osed top process; Circulation through throttling channel can be successively decreased lenitively, can avoid the generation of hydraulic efficiency impact effectively, therefore; The fluctuation of pressure that acts on the control fluid on the control spool is less; The aperture of main valve plug can be not suddenly big or suddenly small, can eliminate shake, has higher operation comfort and safe reliability.The present invention also discloses a kind of crane hydraulic system that comprises above-mentioned hydraulically balanced valve.Crane jib can not effectively cushion the deficiency that produces safety hazard to the impact of pedestal when this crane hydraulic system existed the turning gear of hoisting crane to stop suddenly; Therefore; The impact energy that crane jib produced pedestal when the turning gear that designs a kind of hoisting crane stopped suddenly because of accident is buffering and the high crane rotation device hang-up buffering oil circuit of safety factor effectively, becomes problem demanding prompt solution.
The utility model content
The purpose of the utility model is that crane jib can not effectively cushion the deficiency that produces safety hazard to the impact of pedestal in order to overcome the turning gear that there is hoisting crane in present heavy-duty machine hydraulic efficiency pressure system and to stop suddenly, and the impact energy that crane jib produces pedestal when providing a kind of turning gear at hoisting crane to stop suddenly because of accident is buffering and the high crane rotation device hang-up buffering oil circuit of safety factor effectively.
The concrete technical scheme of the utility model is:
A kind of crane rotation device hang-up buffering oil circuit, comprise two-way hydraulic motor, the brake oil cylinder that is provided with leakage hole and two oil inlets and make turning gear keep in the running balance and steadily and with two bidirectional balanced valves of oil inlet bonded assembly of two-way hydraulic motor; Described crane rotation device hang-up buffering oil circuit also comprises bidirectional buffering valve piece; Described bidirectional buffering valve piece is provided with draining end and two entrance points, and two entrance points of bidirectional buffering valve piece are connected with two oil inlets of two-way hydraulic motor respectively.When this crane rotation device hang-up buffering oil circuit used, the high 1 ~ 1.5Mpa of pressure of the crane hydraulic system when adjusting to the operation pressure of bidirectional buffering valve piece than 1.1 times of rated loads made bidirectional buffering valve piece not influence the normal operation of hoisting crane; When the turning gear of hoisting crane stopped suddenly because of accident, the high pressure chest of two-way hydraulic motor slowly unloads through bidirectional buffering valve piece and to the low-pressure cavity repairing, crane jib is effectively cushioned the impact that pedestal produces; This crane rotation device hang-up buffering oil circuit impact energy that crane jib produces pedestal when the turning gear of hoisting crane stops suddenly because of accident effectively cushions and the safety factor height.
As preferably, described bidirectional buffering valve piece comprises two by pass valves and two check valves; The outlet of the import of a described by pass valve and a check valve connects and composes an entrance point of bidirectional buffering valve piece; The import of another by pass valve and the outlet of another check valve connect and compose another entrance point of bidirectional buffering valve piece, and the import of the outlet of two by pass valves and two check valves connects and composes the draining end.Bidirectional buffering valve piece comprises that by pass valve and the simple cost of one-way valve structures are low.
Compared with prior art, the beneficial effect of the utility model is: one. this crane rotation device hang-up buffering oil circuit impact energy that crane jib produces pedestal when the turning gear of hoisting crane stops suddenly because of accident effectively cushions and the safety factor height.Two. bidirectional buffering valve piece comprises that by pass valve and the simple cost of one-way valve structures are low.
Description of drawings
Fig. 1 is a kind of hydraulic circuit scheme drawing of the utility model.
Among the figure: two-way hydraulic motor-1, oil inlet-11, leakage hole-12, brake oil cylinder-2, bidirectional balanced valve-3, bidirectional buffering valve piece-4, entrance point-41, draining end-42, by pass valve-43, check valve-44.
The specific embodiment
Below in conjunction with shown in the accompanying drawing the utility model is described further.
Shown in accompanying drawing 1: a kind of crane rotation device hang-up buffering oil circuit, comprise two-way hydraulic motor 1, brake oil cylinder 2 with leakage hole 12 and two oil inlets 11, make turning gear keep in the running balance and steady and with two the bidirectional balanced valves 3 of oil inlet 11 bonded assemblys and the bidirectional buffering valve piece 4 of two-way hydraulic motor 1; Described bidirectional buffering valve piece 4 has draining end 42 and two entrance points 41, and two entrance points 41 of bidirectional buffering valve piece 4 are connected with two oil inlets 11 of two-way hydraulic motor 1 respectively; In the present embodiment: described bidirectional buffering valve piece 4 comprises two by pass valves 43 and two check valves 44; The outlet of the import of a described by pass valve 43 and a check valve 44 connects and composes an entrance point 41 of bidirectional buffering valve piece 4; Outlet and the import of two check valves 44 that the outlet of the import of another by pass valve 43 and another check valve 44 connects and composes 41, two by pass valves 43 of another entrance point of bidirectional buffering valve piece 4 connect and compose draining end 42.
When this crane rotation device hang-up buffering oil circuit used, the high 1 ~ 1.5Mpa of pressure of the crane hydraulic system when adjusting to the operation pressure of bidirectional buffering valve piece 4 than 1.1 times of rated loads made bidirectional buffering valve piece 4 not influence the normal operation of hoisting crane; When the turning gear of hoisting crane stops suddenly because of accident; The high pressure chest of two-way hydraulic motor 1 is through the slowly unloading and to the low-pressure cavity repairing of oil inlet 11, by pass valve 43, check valve 44 and another oil inlet 11, and crane jib is effectively cushioned the impact that pedestal produces.
The beneficial effect of the utility model is: this crane rotation device hang-up buffering oil circuit impact energy that crane jib produces pedestal when the turning gear of hoisting crane stops suddenly because of accident effectively cushions and the safety factor height.Bidirectional buffering valve piece comprises that by pass valve and the simple cost of one-way valve structures are low.
It is apparent to one skilled in the art that the utility model can be changed into multiple mode, and the scope that breaks away from the utility model is not thought in such change.The conspicuous modification of the technical personnel to said field that all are such is within the scope that is included in this claim.
Claims (2)
1. crane rotation device hang-up buffering oil circuit, comprise two-way hydraulic motor, the brake oil cylinder that is provided with leakage hole and two oil inlets and make turning gear keep in the running balance and steadily and with two bidirectional balanced valves of oil inlet bonded assembly of two-way hydraulic motor; It is characterized in that: described crane rotation device hang-up buffering oil circuit also comprises bidirectional buffering valve piece; Described bidirectional buffering valve piece is provided with draining end and two entrance points, and two entrance points of bidirectional buffering valve piece are connected with two oil inlets of two-way hydraulic motor respectively.
2. crane rotation device hang-up buffering oil circuit according to claim 1, it is characterized in that: described bidirectional buffering valve piece comprises two by pass valves and two check valves; The outlet of the import of a described by pass valve and a check valve connects and composes an entrance point of bidirectional buffering valve piece; The import of another by pass valve and the outlet of another check valve connect and compose another entrance point of bidirectional buffering valve piece, and the import of the outlet of two by pass valves and two check valves connects and composes the draining end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205663968U CN202414994U (en) | 2011-12-30 | 2011-12-30 | Hang-up buffering oil line for turning device of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205663968U CN202414994U (en) | 2011-12-30 | 2011-12-30 | Hang-up buffering oil line for turning device of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202414994U true CN202414994U (en) | 2012-09-05 |
Family
ID=46739778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205663968U Expired - Lifetime CN202414994U (en) | 2011-12-30 | 2011-12-30 | Hang-up buffering oil line for turning device of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202414994U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016435A (en) * | 2012-12-27 | 2013-04-03 | 宁波广天赛克思液压有限公司 | Valve for preventing hydraulic motor from reversing |
| CN103742486A (en) * | 2014-01-07 | 2014-04-23 | 龙工（上海）精工液压有限公司 | Anti-reversal valve for excavator rotary motor |
| CN104214148A (en) * | 2014-08-29 | 2014-12-17 | 徐州徐工基础工程机械有限公司 | Intelligent buffering and overflowing device |
| CN109292629A (en) * | 2018-10-26 | 2019-02-01 | 中船华南船舶机械有限公司 | A kind of crane Control in Hydraulic Rotation System |
-
2011
- 2011-12-30 CN CN2011205663968U patent/CN202414994U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016435A (en) * | 2012-12-27 | 2013-04-03 | 宁波广天赛克思液压有限公司 | Valve for preventing hydraulic motor from reversing |
| CN103016435B (en) * | 2012-12-27 | 2015-01-21 | 宁波广天赛克思液压有限公司 | Valve for preventing hydraulic motor from reversing |
| CN103742486A (en) * | 2014-01-07 | 2014-04-23 | 龙工（上海）精工液压有限公司 | Anti-reversal valve for excavator rotary motor |
| CN104214148A (en) * | 2014-08-29 | 2014-12-17 | 徐州徐工基础工程机械有限公司 | Intelligent buffering and overflowing device |
| CN109292629A (en) * | 2018-10-26 | 2019-02-01 | 中船华南船舶机械有限公司 | A kind of crane Control in Hydraulic Rotation System |
| CN109292629B (en) * | 2018-10-26 | 2020-05-05 | 中船华南船舶机械有限公司 | Hydraulic rotating system of crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |