CN203476861U - Emergency power system, and hoisting mechanism and hoisting equipment comprising same - Google Patents

Emergency power system, and hoisting mechanism and hoisting equipment comprising same Download PDF

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Publication number
CN203476861U
CN203476861U CN201320360084.0U CN201320360084U CN203476861U CN 203476861 U CN203476861 U CN 203476861U CN 201320360084 U CN201320360084 U CN 201320360084U CN 203476861 U CN203476861 U CN 203476861U
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China
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oil
emergency power
hoisting
hydraulic
valve
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CN201320360084.0U
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Inventor
袁知华
宋春阳
张源
李葳
杨慧杰
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Abstract

The utility model provides an emergency power system, and a hoisting mechanism and hoisting equipment comprising the same. The emergency power system comprises an oil return tank (11), a hydraulic pump (12) of which the oil inlet end is connected to the oil return tank (11), and a reversing valve (13) which comprises an oil inlet hole (P), an oil return hole (T), a first working port (A) and a second working port (B); the oil inlet hole (P) is connected to the oil outlet end of the hydraulic pump (12); the oil return hole (T) is connected to the oil return tank (11). The emergency power system can solve the problem that a hoisted weight stays in the air too long to cause potential safety hazards when the hoisting mechanism fails in the prior art.

Description

Emergency power system and the hoisting mechanism that comprises this system, crane gear
Technical field
The utility model relates to hydraulic control system field, in particular to a kind of emergency power system and the hoisting mechanism that comprises this system, crane gear.
Background technique
While there is power, hydraulic pressure, control system fault in existing Hydraulic for lifting load equipment in lifting process, when if fault cannot solve in the short time, general is all by other crane gear, weight to be put down, this solves with regard to needs the problem of another one crane gear of weight being transferred to from a crane gear aloft, operate very difficult, for lifting by crane in engineering construction compared with large-tonnage at some, be also difficult to find at short notice a crane gear that lifting capacity is suitable with faulty equipment.Weight rests in the air for a long time like this, cannot land in time, just to construction, has brought very large potential safety hazard.
Model utility content
The utility model aims to provide a kind of emergency power system and the hoisting mechanism that comprises this system, crane gear, to solve hoisting heavy in prior art at the hoisting mechanism time lag security hidden trouble that middle overlong time brought of leaving a blank that goes wrong.
To achieve these goals, according to an aspect of the present utility model, provide a kind of emergency power system, it comprises: oil sump tank; Oil hydraulic pump, oil inlet end is connected to oil sump tank; And selector valve, comprising filler opening, return opening, the first actuator port and the second actuator port, filler opening is connected to the oil outlet end of oil hydraulic pump, and return opening is connected to oil sump tank.
Further, emergency power system also comprises overflow oil circuit, and the first end of overflow oil circuit is connected to the outlet end of oil hydraulic pump, and the second end is connected to oil sump tank.
Further, emergency power system also comprises pressure controlled valve, and the entrance point of pressure controlled valve is connected to the first actuator port of selector valve.
According on the other hand of the present utility model, a kind of hoisting mechanism is provided, comprise emergency power system and hoisting system, this emergency power system is above-mentioned emergency power system, emergency power system is connected to hoisting system.
Further, hoisting system comprises: oil circuit hoists; Oil hydraulic motor, the hydraulic fluid port that hoists of oil hydraulic motor is connected to the first end of the oil circuit that hoists; Decline oil circuit, first end is connected on the decline hydraulic fluid port of oil hydraulic motor; Winch, is connected on the output shaft of oil hydraulic motor; And master cylinder, corresponding output shaft setting, and brake hoist engine; The second end of the hydraulic pressure cavity of master cylinder and decline oil circuit is all connected to the first actuator port of emergency power system.
Further, on the oil circuit that hoists, be provided with equilibrium valve, the control end of equilibrium valve is connected to the first actuator port of emergency power system.
Further, hoisting system comprises: oil circuit hoists; Oil hydraulic motor, the hydraulic fluid port that hoists of oil hydraulic motor is connected to the first end of the oil circuit that hoists; Decline oil circuit, first end is connected on the decline hydraulic fluid port of oil hydraulic motor; Winch, is connected on the output shaft of oil hydraulic motor; And master cylinder, corresponding output shaft setting, and brake hoist engine; The hydraulic pressure cavity of master cylinder is connected to the first actuator port of emergency power system or the outlet end of pressure controlled valve, and the second end of decline oil circuit is connected to the first actuator port of emergency power system or the outlet end of pressure controlled valve.
Further, on the oil circuit that hoists, be provided with equilibrium valve, the control end of equilibrium valve is connected to the first actuator port of emergency power system or the outlet end of pressure controlled valve.
According to of the present utility model, provide a kind of crane gear more on the one hand, comprised hoisting mechanism, this hoisting mechanism is above-mentioned hoisting mechanism.
Application the technical solution of the utility model, emergency power system comprises: oil sump tank; Oil hydraulic pump, oil inlet end is connected to oil sump tank; Selector valve, comprises filler opening, return opening, the first actuator port and the second actuator port, and filler opening is connected to the oil outlet end of oil hydraulic pump, and return opening is connected to oil sump tank.This emergency power system can be separately for needing the actuator of hydraulic power that hydraulic power is provided separately, thereby the loss that can avoid former hydraulic mechanism fault cannot provide hydraulic power to bring, prevent the next potential safety hazard of the long-time stagnant blanking bar of weight that former actuator failure causes, the Security that improves hydraulic work system.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows according to the structural representation of embodiment's of the present utility model hoisting mechanism.
Reference character: 10, emergency power system; 20, hoisting system; 30, rapid pipe joint; 40, weight; 11, oil sump tank; 12, oil hydraulic pump; 121, motor; 13, selector valve; 14, pressure controlled valve; 15, overflow oil circuit; 16, the first pressure gauge; 17, the second pressure gauge; 21, the oil circuit that hoists; 22, oil hydraulic motor; 23, decline oil circuit; 24, winch; 241, output shaft; 25, master cylinder; 251, hydraulic pressure cavity; 26, equilibrium valve; 27, back pressure valve; 28, return filter.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the utility model in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
As shown in Figure 1, according to embodiment of the present utility model, emergency power system 10 comprises: oil sump tank 11; Oil hydraulic pump 12, the oil inlet end of oil hydraulic pump 12 is connected to oil sump tank 11; Selector valve 13, selector valve 13 comprises oil inlet P, oil return inlet T, the first actuator port A and the second actuator port B, and oil inlet P is connected to the oil outlet end of oil hydraulic pump 12, and oil return inlet T is connected to oil sump tank 11.Preferably, emergency power system 10 also comprises pressure controlled valve 14, and the entrance point of pressure controlled valve 14 is connected to the first actuator port A of selector valve 13.
This emergency power system 10 can be for needing the structure of hydraulic power that hydraulic power is provided separately, thus the loss that can avoid former hydraulic mechanism fault cannot provide hydraulic power to bring, the Security that improves hydraulic work system.For hoisting mechanism, this emergency power system 10 can be separately provides emergency power for the hoisting system 20 of hoisting mechanism, and the delivery pressure that pressure controlled valve 14 can pilot pressure oil is set, guarantee the steady output hydraulic pressure oil of emergency power system 10, make weight 40 stable landings of hoisting mechanism lifting, prevent the hoisting mechanism overlong time of time lag in leaving a blank that go wrong, reduce the potential safety hazard of hoisting mechanism.
Emergency power system also comprises overflow oil circuit 15, and the first end of overflow oil circuit 15 is connected to the outlet end of oil hydraulic pump 12, and the second end is connected to oil sump tank 11.This overflow oil circuit can limit the hydraulic fluid pressure of oil hydraulic pump output, and guarantees the safe operation of emergency power system.
Stress power system also comprises the second pressure gauge 17 that is connected to the first pressure gauge 16 of the first actuator port A and/or is connected to the outlet end of pressure controlled valve 14.The first pressure gauge 16 is used for detecting the hydraulic fluid pressure of the first actuator port A place output, and the second hydralic pressure gauge is used for the hydraulic fluid pressure of outlet end output of detected pressures control valve 14.
Preferably, pressure controlled valve 14 is manual proportional pressure-reducing valve, and this kind of pressure controlled valve can accurately be controlled the hydraulic fluid pressure of output, and work is more steadily reliable.This pressure controlled valve 14 can also be electromagnetic proportional valve etc.
Preferably, selector valve is manual 2/2-way selector valve, and this selector valve can be also pilot operated directional control valve or solenoid directional control valve.
Preferably, in the present embodiment, the second actuator port B is connected to oil sump tank 11.Due in this emergency power system 10, the second actuator port B does not participate in dynamic Control substantially, therefore do not need pressure oil output, and when without 10 work of emergency power system, need to provide oil return approach for the hydraulic oil through oil hydraulic pump 12, therefore, this second actuator port B is connected directly to oil circuit.In the present embodiment, this second actuator port B and return opening flow back to oil sump tank 11 after converging to same hydraulic pipe line.
In the present embodiment, emergency power system 10 can also comprise a plurality of connection oil circuits, a plurality of connection oil circuits can be divided into two groups, one group of first end that connects oil circuit is all connected to the first actuator port A, the second end is all connected with rapid pipe joint 30, the first end that another group connects oil circuit is all connected to the outlet end of pressure controlled valve 14, and the second end is all connected with rapid pipe joint.This kind of structure can guarantee that emergency power system 10 is applicable to many kinds of liquid pressing system needs, can realize the rapid-assembling/disassembling between emergency power system 10 and hydraulic system simultaneously, easy to use.
Refer again to shown in Fig. 1, according to embodiment of the present utility model, hoisting mechanism comprises emergency power system 10 and hoisting system 20, and this emergency power system 10 is above-mentioned emergency power system, emergency power system 10 is connected to hoisting system 20, and provides emergency power for this hoisting system 20.
In the present embodiment, hoisting system 20 comprises: oil circuit 21 hoists; Oil hydraulic motor 22, the hydraulic fluid port C that hoists of oil hydraulic motor 22 is connected to the first end of the oil circuit 21 that hoists; Decline oil circuit 23, the first end of decline oil circuit 23 is connected on the decline hydraulic fluid port D of oil hydraulic motor 22; Winch 24, winch 24 is connected on the output shaft 241 of oil hydraulic motor 22; And master cylinder 25, the corresponding output shaft 241 of master cylinder 25 arranges, and brake hoist engine 24; The hydraulic pressure cavity 251 of master cylinder 25 is connected to the first actuator port A of emergency power system 10 or the outlet end of pressure controlled valve 14, and the second end of decline oil circuit 23 is connected to the first actuator port A of emergency power system 10 or the outlet end of pressure controlled valve 14.
At hoisting system 20, break down while causing weight 40 normally to land, hydraulic pressure cavity 251 and the decline oil circuit 23 of the master cylinder 25 that can be hoisting system 20 by emergency power system 10 provide hydraulic oil, thereby order about winch 24 actions, make weight 40 can realize landing.Because this emergency power system is directly used the fuel tank of original hydraulic system, and can be directly at the enterprising line operate in the basis of original hydraulic system, therefore without independent again employing another one crane gear, carry out hoisting heavy, also can easily rapidly weight 40 be drop to ground, prevent that weight 40 delays from bringing potential safety hazard in the air.
In other embodiments, the hydraulic pressure cavity 251 of master cylinder 25 and the second end of decline oil circuit 23 also can all be connected to the outlet end of the pressure controlled valve 14 of emergency power system 10, thereby can be by changing the outlet end hydraulic fluid pressure of pressure controlled valve 14, the weight that makes the hydraulic fluid pressure adaptation weight 40 of output, guarantees that weight 40 can stable landing.
On the oil circuit 21 that hoists, be provided with equilibrium valve 26, the control end of equilibrium valve 26 be connected to emergency power system 10 pressure controlled valve 14 outlet end or be directly connected on the first actuator port A.In the process of using in emergency power system 10, when the control end of equilibrium valve 26 is directly connected on the first actuator port A, can directly by the valve element position of control selector valve 13, controls weight and decline.When the control end of equilibrium valve 26 being connected to the outlet end of pressure controlled valve 14 of emergency power system 10, just can be by regulating the openings of sizes of pressure controlled valve 14 to carry out the hydraulic fluid pressure of regulation output, thereby control more flexibly and easily the openings of sizes of equilibrium valve 26, weight 40 can steadily be declined from slow to fast.
Preferably, hoist the second end of oil circuit 21 is connected to oil sump tank 11 by back pressure valve 27 and return filter 28.Back pressure valve 27 is for to prevent that hydraulic oil from flowing to the guiding one-way valve of oil hydraulic motor 22 from oil sump tank 11, and this back pressure valve 27 can produce return oil pressure, guarantees that weight 40 steadily declines.
Preferably, between emergency power system 10 and the hydraulic circuit of hoisting system 20, by rapid pipe joint 30, connect.In other embodiments, between emergency power system 10 and hoisting system 20, also can directly realize connection by hydraulic circuit.
According to embodiment of the present utility model, crane gear comprises hoisting mechanism, and this hoisting mechanism is above-mentioned hoisting mechanism.
Below in conjunction with Fig. 1, the working procedure of hoisting mechanism is illustrated:
As shown in Figure 1, when crane gear breaks down, weight 40 is suspended in the air, and now crane gear is locked the output shaft 241 of winch 24 by the master cylinder 25 on winch 24, and equilibrium valve 26 also can be locked by oil hydraulic motor 22 simultaneously; As weight put down, the master cylinder of winch 24 25 need to be opened, then equilibrium valve 26 is opened, simultaneously to oil hydraulic motor 22 repairings, just weight can steadily put down.
The power resources of emergency power system 10 are in motor 121 mini engines, only need master cylinder 25 and the equilibrium valve 26 of power unlatching winch 24 seldom, emergency power system 10 is connected with crane gear with pipeline by rapid pipe joint 30, hydraulic oil by 12 pairs of oil sump tanks 11 of oil hydraulic pump pressurizes, flow to selector valve 13, by the relief valve on overflow oil circuit 15, limited the working pressure of system simultaneously.Selector valve 13 can be selected " stopping " and " work " two states, and when " stopping ", hydraulic oil is directly got back to oil sump tank 11, and the decline hydraulic fluid port D that when " work ", hydraulic oil flows to oil hydraulic motor 22 by the first actuator port A, carries out repairing; Simultaneously hydraulic oil flows to by the first actuator port A in the hydraulic pressure cavity 251 of master cylinder 25 of winch 24, opens master cylinder 25, the locking of 25 pairs of winchs 24 of brake off cylinder.Hydraulic oil by the first actuator port A can also flow to pressure controlled valve 14, and the cracking pressure of equilibrium valve 26 is provided; Last operation pressure controlled valve 14, the pressure that makes it output slowly becomes large by 0, can control the openings of sizes of equilibrium valve 26 thus, weight can steadily be declined from slow to fast, the hydraulic oil of oil hydraulic motor 22 is by after equilibrium valve 26, the back pressure valve 27 of flowing through produces return oil pressure, finally gets back to oil sump tank 11.
Emergency power system 10 of the present utility model all adopts conventional hydraulic element to control, and required drive is little, and control mode is simple, practical, easy to operate.
Emergency power system 10 of the present utility model can be applied on the equipment of crawler crane, truck crane and other use hydraulic driving elevators, and versatility is wide.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect: application the technical solution of the utility model, and emergency power system comprises: oil sump tank; Oil hydraulic pump, oil inlet end is connected to oil sump tank; Selector valve, comprises filler opening, return opening, the first actuator port and the second actuator port, and filler opening is connected to the oil outlet end of oil hydraulic pump, and return opening is connected to oil sump tank; And pressure controlled valve, entrance point is connected to the first actuator port of selector valve.This emergency power system can be separately for needing the actuator of hydraulic power that hydraulic power is provided separately, thereby the loss that can avoid former hydraulic mechanism fault cannot provide hydraulic power to bring, prevent the next potential safety hazard of the long-time stagnant blanking bar of weight that former actuator failure causes, the Security that improves hydraulic work system.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (10)

1. an emergency power system, is characterized in that, comprising:
Oil sump tank (11);
Oil hydraulic pump (12), oil inlet end is connected to described oil sump tank (11); And
Selector valve (13), comprise filler opening (P), return opening (T), the first actuator port (A) and the second actuator port (B), described filler opening (P) is connected to the oil outlet end of described oil hydraulic pump (12), described return opening (T) is connected to described oil sump tank (11), and described the second actuator port (B) is connected to described oil sump tank (11).
2. emergency power system according to claim 1, it is characterized in that, described emergency power system also comprises overflow oil circuit (15), and the first end of described overflow oil circuit (15) is connected to the outlet end of described oil hydraulic pump (12), and the second end is connected to described oil sump tank (11).
3. emergency power system according to claim 1, is characterized in that, described emergency power system also comprises pressure controlled valve (14), and the entrance point of described pressure controlled valve (14) is connected to first actuator port (A) of described selector valve (13).
4. a hoisting mechanism, comprise emergency power system (10) and hoisting system (20), it is characterized in that, described emergency power system (10) is the emergency power system described in claim 1 or 2, and described emergency power system (10) is connected to described hoisting system (20).
5. hoisting mechanism according to claim 4, is characterized in that, described hoisting system (20) comprising:
Oil circuit (21) hoists;
Oil hydraulic motor (22), the first end of oil circuit (21) that hoist described in the hydraulic fluid port that hoists (C) of described oil hydraulic motor (22) is connected to;
Decline oil circuit (23), first end is connected on the decline hydraulic fluid port (D) of described oil hydraulic motor (22);
Winch (24), is connected on the output shaft (241) of described oil hydraulic motor (22); And
Master cylinder (25), corresponding described output shaft (241) arranges, and brakes described winch (24);
The hydraulic pressure cavity (251) of described master cylinder (25) and the second end of described decline oil circuit (23) are all connected to first actuator port (A) of described emergency power system (10).
6. hoisting mechanism according to claim 5, is characterized in that, described in hoist on oil circuit (21) and be provided with equilibrium valve (26), the control end of described equilibrium valve (26) is connected to first actuator port (A) of described emergency power system (10).
7. a hoisting mechanism, comprise emergency power system (10) and hoisting system (20), it is characterized in that, described emergency power system (10) is emergency power system claimed in claim 3, and described emergency power system (10) is connected to described hoisting system (20).
8. hoisting mechanism according to claim 7, is characterized in that, described hoisting system (20) comprising:
Oil circuit (21) hoists;
Oil hydraulic motor (22), the first end of oil circuit (21) that hoist described in the hydraulic fluid port that hoists (C) of described oil hydraulic motor (22) is connected to;
Decline oil circuit (23), first end is connected on the decline hydraulic fluid port (D) of described oil hydraulic motor (22);
Winch (24), is connected on the output shaft (241) of described oil hydraulic motor (22); And
Master cylinder (25), corresponding described output shaft (241) arranges, and brakes described winch (24);
The hydraulic pressure cavity (251) of described master cylinder (25) is connected to first actuator port (A) of described emergency power system (10) or the outlet end of described pressure controlled valve (14), and the second end of described decline oil circuit (23) is connected to first actuator port (A) of described emergency power system (10) or the outlet end of described pressure controlled valve (14).
9. hoisting mechanism according to claim 8, it is characterized in that, on the described oil circuit that hoists (21), be provided with equilibrium valve (26), the control end of described equilibrium valve (26) is connected to first actuator port (A) of described emergency power system (10) or the outlet end of described pressure controlled valve (14).
10. a crane gear, comprises hoisting mechanism, it is characterized in that, described hoisting mechanism is the hoisting mechanism described in any one in claim 4 to 9.
CN201320360084.0U 2013-06-21 2013-06-21 Emergency power system, and hoisting mechanism and hoisting equipment comprising same Active CN203476861U (en)

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Application Number Priority Date Filing Date Title
CN201320360084.0U CN203476861U (en) 2013-06-21 2013-06-21 Emergency power system, and hoisting mechanism and hoisting equipment comprising same

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Application Number Priority Date Filing Date Title
CN201320360084.0U CN203476861U (en) 2013-06-21 2013-06-21 Emergency power system, and hoisting mechanism and hoisting equipment comprising same

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899594A (en) * 2014-03-25 2014-07-02 东南大学 Manual emergency operation device and method for internal-expansion locking cylinder
CN105570214A (en) * 2016-03-17 2016-05-11 上海振华重工(集团)股份有限公司 Emergency descent valve bank

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899594A (en) * 2014-03-25 2014-07-02 东南大学 Manual emergency operation device and method for internal-expansion locking cylinder
CN103899594B (en) * 2014-03-25 2016-01-06 东南大学 Internal expansion type locking cylinder manualemergency operating device and method
CN105570214A (en) * 2016-03-17 2016-05-11 上海振华重工(集团)股份有限公司 Emergency descent valve bank

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