CN202400772U - Hoist device emergency descent oil circuit - Google Patents
Hoist device emergency descent oil circuit Download PDFInfo
- Publication number
- CN202400772U CN202400772U CN2011205666468U CN201120566646U CN202400772U CN 202400772 U CN202400772 U CN 202400772U CN 2011205666468 U CN2011205666468 U CN 2011205666468U CN 201120566646 U CN201120566646 U CN 201120566646U CN 202400772 U CN202400772 U CN 202400772U
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- over valve
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- brake
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Abstract
The utility model relates to the field of hydraulic cranes and aims to provide a hoist device emergency descent oil circuit which provides convenience for emergency descent. The hoist device emergency descent oil circuit comprises a bidirectional hydraulic motor provided with a hoist device, inlets 1 and 2 and a leakage hole, a brake cylinder, a first shuttle valve of which two inlets are connected with the inlets 1 and 2 respectively, and a first reversing valve, a second reversing valve and a second shuttle valve which are used for communicating the inlets 1 and 2 during emergency; the outlet of the first shuttle valve is connected with one inlet of the second shuttle valve; the other inlet of the second shuttle valve is connected with the connecting end of an emergency hydraulic pump; the outlet of the second shuttle valve is connected with the second reversing valve; when the second reversing valve is positioned at a first working position, a brake releasing oil hole of the brake cylinder is communicated with the leakage hole; and when the second reversing valve is positioned at a second working position, the brake releasing oil hole of the brake cylinder is communicated with the connecting end of the emergency hydraulic pump. The hoist device emergency descent oil circuit provides convenience for emergency descent.
Description
Technical field
The utility model relates to the hydraulic lift field, especially a kind of emergent emergent oil circuit of transferring of winding plant easily of transferring.
Background technology
Hydraulic lift is the weight-lifting equipment of widespread use; During hydraulic lift work, because unexpected dead electricity Hydraulic Pump can quit work, the winding plant that HM Hydraulic Motor drives can brake, and the weight that winding plant plays is if can there be potential safety hazard in not emergent transferring; The utility model of Chinese patent notification number CN201825681U discloses a kind of hydraulic control system of winding plant, comprises the motor that drives reel and the oil cylinder of brake drum; Also comprise hydraulicchange-over valve and energy storage with two control positioies; Hydraulicchange-over valve is arranged on elevator change-over valve and motor and receives between the brake off inlet of hydraulic fluid port that the rope inlet is communicated with and oil cylinder; At first control position, the hydraulic fluid port that elevator receipts rope inlet change-over valve and motor is communicated with and the brake off inlet conducting of oil cylinder; At second control position, the brake off inlet of oil cylinder and oil return circuit conducting; Unidirectional conducting between the hydraulic fluid port of elevator receipts rope inlet to the energy storage of motor; And elevator change-over valve and motor is received the rope inlet and is communicated with the chamber of promotion spool generation to the end place of the first control position tendency toward sliding of spool; The hydraulic fluid port of energy storage is communicated with the chamber of promotion spool generation to the other end place of second place tendency toward sliding of spool.The weak point that the hydraulic control system of this winding plant exists is: when unexpected dead electricity Hydraulic Pump quits work, and the winding plant brake that motor drives, the emergent inconvenience of transferring of the weight that winding plant plays; Therefore, design and a kind ofly emergent transfer that winding plant is emergent easily transfers oil circuit, become problem demanding prompt solution.
The utility model content
The purpose of the utility model is to work as unexpected dead electricity Hydraulic Pump for the hydraulic control system that overcomes present winding plant to quit work; The winding plant brake that motor drives; The emergent deficiency of transferring inconvenience of the weight that winding plant plays provides a kind of emergent emergent oil circuit of transferring of winding plant easily of transferring.
The concrete technical scheme of the utility model is:
A kind of winding plant is emergent transfers oil circuit, comprise the two-way hydraulic motor that has winding plant and have import one, import two and leakage hole, brake oil cylinder and two imports respectively with import one and import two bonded assemblys first shuttle valve; The emergent oil circuit of transferring of described winding plant also is included in first change-over valve, second change-over valve with two control positioies and second shuttle valve that is used for conducting import one and import two when meeting an urgent need; The outlet of described first shuttle valve is connected with an import of second shuttle valve, and another import of second shuttle valve is connected with the Emergency Hydraulic Pump coupling end, and the outlet of second shuttle valve is connected with second change-over valve; Second change-over valve is in first control position, the releasing brake hydraulic fluid port and the leakage hole conducting of brake oil cylinder; Second change-over valve is in second control position, the releasing brake hydraulic fluid port and the conducting of Emergency Hydraulic Pump coupling end of brake oil cylinder.During the hydraulic lift normal operation, first change-over valve is in open position, and second change-over valve is in first control position; Need meet an urgent need when transferring when the weight that plays because of the dead electricity winding plant, be connected hydraulic hand-pump with the Emergency Hydraulic Pump coupling end, a road of the pressure oil of hydraulic hand-pump output makes the switching-over of first change-over valve be communicated with the import one and import two of two-way hydraulic motor; Another road of the pressure oil of hydraulic hand-pump output makes the switching-over of second shuttle valve and makes second change-over valve be in second control position, and pressure oil gets into the brake of the releasing brake hydraulic fluid port releasing winding plant of brake oil cylinder; The weight by gravity that winding plant plays is transferred.The emergent emergent convenience of transferring of oil circuit of transferring of this winding plant.
As preferably; Described first change-over valve is a bi-bit bi-pass normal off pilot operated directional control valve; A main hydraulic fluid port of first change-over valve is connected with import one; The main hydraulic fluid port of another of first change-over valve is connected with import two, and the control port import of first change-over valve is connected with the Emergency Hydraulic Pump coupling end, and the outlet of control port is connected with leakage hole 23.First change-over valve is that bi-bit bi-pass normal off pilot operated directional control valve is simple and practical.
As preferably, described second change-over valve is a two position three way directional control valve; The P mouth of described second change-over valve is connected with the outlet of second shuttle valve, and the C mouth of second change-over valve is connected with leakage hole 23, and the D mouth of second change-over valve is connected with the releasing of brake oil cylinder brake hydraulic fluid port.Second change-over valve is that two position three way directional control valve is simple and practical.
As preferably, described second change-over valve is the adjustable pressure two position three way directional control valve.Can regulate convenient pressure by brake oil cylinder.
Compared with prior art, the beneficial effect of the utility model is: one. the emergent emergent convenience of transferring of oil circuit of transferring of this winding plant.Two. first change-over valve is that bi-bit bi-pass normal off pilot operated directional control valve is simple and practical.Three. second change-over valve is that the adjustable pressure two position three way directional control valve is simple and practical and can regulate convenient pressure by brake oil cylinder.
Description of drawings
Fig. 1 is a kind of hydraulic circuit scheme drawing of the utility model.
Among the figure: winding plant-1, two-way hydraulic motor-2, import one-21, import two-22, leakage hole-23, brake oil cylinder-3, releasing brake hydraulic fluid port-31, first change-over valve-4, second change-over valve-5, P mouth-51, C mouth-52, D mouth-53, first shuttle valve-6, second shuttle valve-7, Emergency Hydraulic Pump coupling end-8.
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 winding plant is emergent transfers oil circuit, comprise the two-way hydraulic motor 2 that has winding plant 1 and have import 1, import 2 22 and leakage hole 23, brake oil cylinder 3, two imports respectively with import 1 and import 2 22 bonded assemblys first shuttle valve 6, be used for when emergent conducting import 1 and import 2 22 first change-over valve 4, have second change-over valve 5 and second shuttle valve 7 of two control positioies.
The outlet of first shuttle valve 6 is connected with an import of second shuttle valve 7, and another import of second shuttle valve 7 is connected with Emergency Hydraulic Pump coupling end 8, and the outlet of second shuttle valve 7 is connected with second change-over valve 5; Second change-over valve 5 is in first control position, the releasing brake hydraulic fluid port 31 and leakage hole 23 conductings of brake oil cylinder 3; Second change-over valve 5 is in second control position, the releasing brake hydraulic fluid port 31 and 8 conductings of Emergency Hydraulic Pump coupling end of brake oil cylinder 3; In the present embodiment; Described first change-over valve 4 is a bi-bit bi-pass normal off pilot operated directional control valve; A main hydraulic fluid port of first change-over valve 4 is connected with import 1; Another main hydraulic fluid port of first change-over valve 4 is connected with import 2 22, and the control port import of first change-over valve 4 is connected with Emergency Hydraulic Pump coupling end 8, and the outlet of control port is connected with leakage hole 23; Described second change-over valve 5 is the adjustable pressure two position three way directional control valve; The P mouth 51 of described second change-over valve 5 is connected with the outlet of second shuttle valve 7, and the C mouth 52 of second change-over valve 5 is connected with leakage hole 23, and the D mouth 53 of second change-over valve 5 is connected with the releasing of brake oil cylinder 3 brake hydraulic fluid port 31.
The winding plant hydraulic control system of this hydraulic lift is identical with prior art, and those skilled in the art need not creative work based on prior art and just can realize; During the hydraulic lift normal operation, first change-over valve 4 is in open position, and second change-over valve 5 is in first control position; Emergency Hydraulic Pump is generally hydraulic hand-pump; When quitting work because of the dead electricity Hydraulic Pump; Winding plant 1 brake that two-way hydraulic motor 2 drives; The weight that winding plant 1 plays need be met an urgent need when transferring; Be connected hydraulic hand-pump with Emergency Hydraulic Pump coupling end 8, a road of the pressure oil of hydraulic hand-pump output makes 4 switching-overs of first change-over valve be communicated with the import 1 and import 2 22 of two-way hydraulic motor 2; Another road of the pressure oil of hydraulic hand-pump output makes 7 switching-overs of second shuttle valve and makes second change-over valve 5 be in second control position, and pressure oil gets into the brake of the releasing brake hydraulic fluid port 31 releasing winding plants 1 of brake oil cylinder 3; The weight by gravity that winding plant 1 plays is transferred.
The beneficial effect of the utility model is: the emergent emergent convenience of transferring of oil circuit of transferring of this winding plant.First change-over valve is that bi-bit bi-pass normal off pilot operated directional control valve is simple and practical.Second change-over valve is that the adjustable pressure two position three way directional control valve is simple and practical and can regulate convenient pressure by brake oil cylinder.
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 (4)
1. a winding plant is emergent transfers oil circuit, comprise the two-way hydraulic motor that has winding plant and have import one, import two and leakage hole, brake oil cylinder and two imports respectively with import one and import two bonded assemblys first shuttle valve; It is characterized in that: the emergent oil circuit of transferring of described winding plant also is included in first change-over valve, second change-over valve with two control positioies and second shuttle valve that is used for conducting import one and import two when meeting an urgent need; The outlet of described first shuttle valve is connected with an import of second shuttle valve, and another import of second shuttle valve is connected with the Emergency Hydraulic Pump coupling end, and the outlet of second shuttle valve is connected with second change-over valve; Second change-over valve is in first control position, the releasing brake hydraulic fluid port and the leakage hole conducting of brake oil cylinder; Second change-over valve is in second control position, the releasing brake hydraulic fluid port and the conducting of Emergency Hydraulic Pump coupling end of brake oil cylinder.
2. the emergent oil circuit of transferring of winding plant according to claim 1; It is characterized in that: described first change-over valve is a bi-bit bi-pass normal off pilot operated directional control valve; A main hydraulic fluid port of first change-over valve is connected with import one; The main hydraulic fluid port of another of first change-over valve is connected with import two, and the control port import of first change-over valve is connected with the Emergency Hydraulic Pump coupling end, and the outlet of control port is connected with leakage hole.
3. winding plant according to claim 1 is emergent transfers oil circuit, and it is characterized in that: described second change-over valve is a two position three way directional control valve; The P mouth of described second change-over valve is connected with the outlet of second shuttle valve, and the C mouth of second change-over valve is connected with leakage hole, and the D mouth of second change-over valve is connected with the releasing of brake oil cylinder brake hydraulic fluid port.
4. winding plant according to claim 1 is emergent transfers oil circuit, and it is characterized in that: described second change-over valve is the adjustable pressure two position three way directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205666468U CN202400772U (en) | 2011-12-30 | 2011-12-30 | Hoist device emergency descent oil circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205666468U CN202400772U (en) | 2011-12-30 | 2011-12-30 | Hoist device emergency descent oil circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202400772U true CN202400772U (en) | 2012-08-29 |
Family
ID=46698435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205666468U Expired - Lifetime CN202400772U (en) | 2011-12-30 | 2011-12-30 | Hoist device emergency descent oil circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202400772U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910550A (en) * | 2012-09-20 | 2013-02-06 | 宁波凯荣船用机械有限公司 | Winch emergency pay-off module |
| CN103613021A (en) * | 2013-11-11 | 2014-03-05 | 长沙中联消防机械有限公司 | Winch hydraulic control system and engineering machinery |
| CN103742474A (en) * | 2014-01-07 | 2014-04-23 | 中联重科股份有限公司 | Tower crane, tower crane hoist system and hydraulic station |
| CN105460819A (en) * | 2015-10-30 | 2016-04-06 | 徐州重型机械有限公司 | Winch emergency landing control system and aerial ladder fire truck using same |
| CN105692454A (en) * | 2016-04-14 | 2016-06-22 | 徐州重型机械有限公司 | Winch control system and crane |
| CN106044664A (en) * | 2015-08-27 | 2016-10-26 | 徐州重型机械有限公司 | Quick lifting bucket hydraulic locking system and aerial ladder fire truck using system |
| CN108584739A (en) * | 2017-12-21 | 2018-09-28 | 青岛天时海洋石油装备有限公司 | Emergent overload protective device and its working method |
-
2011
- 2011-12-30 CN CN2011205666468U patent/CN202400772U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910550A (en) * | 2012-09-20 | 2013-02-06 | 宁波凯荣船用机械有限公司 | Winch emergency pay-off module |
| CN102910550B (en) * | 2012-09-20 | 2014-09-10 | 宁波凯荣船用机械有限公司 | Winch emergency pay-off module |
| CN103613021A (en) * | 2013-11-11 | 2014-03-05 | 长沙中联消防机械有限公司 | Winch hydraulic control system and engineering machinery |
| CN103742474A (en) * | 2014-01-07 | 2014-04-23 | 中联重科股份有限公司 | Tower crane, tower crane hoist system and hydraulic station |
| CN106044664A (en) * | 2015-08-27 | 2016-10-26 | 徐州重型机械有限公司 | Quick lifting bucket hydraulic locking system and aerial ladder fire truck using system |
| CN105460819A (en) * | 2015-10-30 | 2016-04-06 | 徐州重型机械有限公司 | Winch emergency landing control system and aerial ladder fire truck using same |
| CN105692454A (en) * | 2016-04-14 | 2016-06-22 | 徐州重型机械有限公司 | Winch control system and crane |
| CN108584739A (en) * | 2017-12-21 | 2018-09-28 | 青岛天时海洋石油装备有限公司 | Emergent overload protective device and its working method |
| CN108584739B (en) * | 2017-12-21 | 2023-04-28 | 青岛天时海洋石油装备有限公司 | Emergency overload protection system and working method thereof |
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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: 20120829 |