CN204001036U - A kind of revolution energy conserving system and engineering machinery - Google Patents

A kind of revolution energy conserving system and engineering machinery Download PDF

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Publication number
CN204001036U
CN204001036U CN201420356876.5U CN201420356876U CN204001036U CN 204001036 U CN204001036 U CN 204001036U CN 201420356876 U CN201420356876 U CN 201420356876U CN 204001036 U CN204001036 U CN 204001036U
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valve
slewing
revolution
accumulator
cartridge
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CN201420356876.5U
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罗伟平
张裕露
陈昊
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Sany Marine Heavy Industry Co Ltd
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Sany Marine Heavy Industry Co Ltd
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Abstract

The utility model discloses a kind of revolution energy conserving system and engineering machinery; This revolution energy conserving system comprises revolving dial, revolution support gear ring, auxiliary slewing equipment, main Hydraulic slewing system and is independent of the auxiliary Hydraulic slewing system of main Hydraulic slewing system, auxiliary Hydraulic slewing system comprises reversing motor and accumulator, accumulator stores the energy of revolving dial while driving reversing motor rotation and rotary braking while starting for turning round, main Hydraulic slewing system is used for driving revolving dial to rotate; Auxiliary slewing equipment comprises the first gear and the clutch that coaxially set gradually, and the first gear supports gear ring with revolution and engages, and clutch is for turning round combination and the disengaging between the rotating shaft of servicing unit and the rotating shaft of auxiliary Hydraulic slewing system reversing motor; Compared with prior art, this revolution energy conserving system meets revolution starting time requirement, when having reduced the power configuration of main Hydraulic slewing system, saves rotation energy consumption.

Description

A kind of revolution energy conserving system and engineering machinery
Technical field
The utility model relates to hydraulic technique field, particularly a kind of revolution energy conserving system and engineering machinery.
Background technology
At present, the revolution hydraulic circuit of the engineering machinery such as excavation, crane extensively adopts load sensitive pump, in revolution start-up course, the flow of load sensitive pump can adapt to the flow of motor automatically, spill losses reduces, but because revolution startup instantaneous pressure is larger, this pressure still can make overflow valve open, overflow portion hydraulic oil; Braking procedure motor becomes pump and uses, and the oil pumping is through valve overflow, and braking energy is converted into heat energy.According to statistics, crane rotation mechanism moment of inertia in the time of braking and starting accounts for 70% of total revolution moment of inertia, if slew gear braking kinetic energy stores for next stage starting slew gear, will greatly reduce energy consumption and the power configuration of slew gear.
Patent CN201210117127.2 discloses a kind of hydraulic crawler excavator revolution energy conserving system, this revolution energy conserving system adopts the accumulation of energy of hydraulic accumulator mode, this accumulator stored energy mechanism hydraulic circuit merges in major loop, in the time of rotary braking, absorbs rotary kinetic energy by accumulator; In the time starting revolution, accumulator release pressure oil, drives rotary motor, and after accumulator oil is finished, Main Hydraulic Pump drives slew gear running.Although this mode has reclaimed braking energy to a certain extent, because the energy of accumulator storage is less than slew gear starting institute energy requirement, easily cause the starting acceleration time longer, and Hydraulic slewing system power configuration can not reduce.
Utility model content
In view of this, the utility model proposes a kind of revolution energy conserving system, to solve the problem that the slew gear starting acceleration time is long, Hydraulic slewing system power configuration is higher.
In addition, the utility model has also proposed a kind of engineering machinery that this revolution energy conserving system is installed.
On the one hand, the utility model provides a kind of revolution energy conserving system, comprise revolving dial, turn round the auxiliary Hydraulic slewing system that supports gear ring, auxiliary slewing equipment, main Hydraulic slewing system and be independent of described main Hydraulic slewing system, described auxiliary Hydraulic slewing system comprises reversing motor and accumulator, described accumulator stores the energy of revolving dial while driving reversing motor rotation and rotary braking while starting for turning round, described main Hydraulic slewing system is used for driving revolving dial to rotate; Described auxiliary slewing equipment comprises the first gear and the clutch that coaxially set gradually, described the first gear supports gear ring with revolution and engages, and described clutch is for turning round combination and the disengaging between the rotating shaft of servicing unit and the rotating shaft of described auxiliary Hydraulic slewing system reversing motor.
In further technical scheme, described auxiliary Hydraulic slewing system also comprises:
Fuel tank, the first one way valve and the second one way valve, the first power mouth of described reversing motor is connected with accumulator by the first one way valve, and the second power mouth of described reversing motor is connected with accumulator by the second one way valve;
The first cartridge valve, the second cartridge valve, the 3rd cartridge valve, the 4th cartridge valve, the first reversal valve and the second reversal valve, the first hydraulic fluid port of described the first cartridge valve and the second cartridge valve is connected with described the first power mouth, the first hydraulic fluid port of described the 3rd cartridge valve and the 4th cartridge valve is connected with described the second power mouth, the second hydraulic fluid port of described the second cartridge valve and the 3rd cartridge valve is connected with described accumulator, and the second hydraulic fluid port of described the first cartridge valve and the 4th cartridge valve is connected with described fuel tank; The control port of described the first cartridge valve and the second cartridge valve is connected with two oil-outs of described the first reversal valve respectively, the control port of described the 3rd cartridge valve and the 4th cartridge valve is connected with two oil-outs of described the second reversal valve respectively, the first oil-in of described the first reversal valve and the second reversal valve is connected with accumulator, and the second oil-in of the first reversal valve and the second reversal valve is connected with fuel tank;
Inlet port, the 3rd one way valve, the 4th one way valve, the first overflow valve and the second overflow valve, described inlet port is connected with the second power mouth with the first power mouth of described reversing motor with the 4th one way valve by the 3rd one way valve respectively, and described the first overflow valve and the second overflow valve are connected in parallel with the 3rd one way valve and the 4th one way valve respectively.
In further technical scheme, described revolution energy conserving system also comprises brake, and described auxiliary Hydraulic slewing system also comprises the 3rd reversal valve and the 4th reversal valve, and described brake and clutch are hydraulic-driven structure; The first hydraulic fluid port of described the 3rd reversal valve and the 4th reversal valve is connected with the oil-in of brake and clutch respectively; Described the 3rd reversal valve is connected with accumulator with the second hydraulic fluid port of the 4th reversal valve, and the 3rd hydraulic fluid port is connected with fuel tank.
In further technical scheme, described the first reversal valve and the second reversal valve are two position four-way solenoid valves.
In further technical scheme, described auxiliary Hydraulic slewing system also comprises pressure switch, and described pressure switch is connected with accumulator.
In further technical scheme, described the 3rd reversal valve and the 4th reversal valve are two-bit triplet electromagnetic valve.
In further technical scheme, described auxiliary Hydraulic slewing system also comprises on-off valve, and the first hydraulic fluid port of described on-off valve is connected with described accumulator, and the second hydraulic fluid port is connected with external oil sources.
In further technical scheme, described on-off valve is ball valve.
In further technical scheme, described auxiliary Hydraulic slewing system also comprises the 3rd overflow valve, and described the 3rd overflow valve is arranged on the oil circuit between the first hydraulic fluid port and the fuel tank of described on-off valve.
On the other hand, the utility model also provides a kind of engineering machinery, comprises slew gear and above-mentioned any one revolution energy conserving system, and described slew gear comprises described revolution support gear ring.
The one revolution energy conserving system that the utility model provides, compared with prior art, owing to assisting Hydraulic slewing system to be independent of main Hydraulic slewing system, due to the setting of clutch, make to turn round the combination of servicing unit and reversing motor and depart from convenient realization, and accumulator drives reversing motor to rotate while being used for turning round starting, when rotary braking, store the braking energy of revolving dial, when particularly revolution is started, the first gear and main rotary system act on revolution simultaneously and support gear ring, in ensureing starting smoothly, also meet the revolution starting time; In addition, because accumulator can provide certain energy for the starting of slew gear, power configuration that therefore can the main Hydraulic slewing system of corresponding reduction, is conducive to save rotation energy consumption.
Brief description of the drawings
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 is the hydraulic schematic diagram of the utility model specific embodiment revolution energy conserving system;
Fig. 2 is the structural representation of auxiliary slewing equipment in the utility model specific embodiment.
Detailed description of the invention
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.1 and 2 also describe the utility model in detail below with reference to the accompanying drawings in conjunction with the embodiments.
As shown in Figure 1, the utility model specific embodiment provides a kind of revolution energy conserving system, comprise revolving dial, gear ring 1 is supported in revolution, auxiliary slewing equipment, main Hydraulic slewing system and auxiliary Hydraulic slewing system, it is ring gear that gear ring 1 is supported in revolution, main Hydraulic slewing system and revolving dial are connected and for driving revolving dial to support gear ring 1 and rotate relative to turning round, auxiliary Hydraulic slewing system comprises the reversing motor 13 and the accumulator 2 that are connected in oil circuit, and auxiliary Hydraulic slewing system is independent of main Hydraulic slewing system setting, auxiliary slewing equipment comprises the first gear 17 coaxially setting gradually, clutch 14, reductor 16 and brake 15, the first gear 17 supports gear ring 1 with revolution and engages, clutch 14 is for turning round combination and the disengaging between the rotating shaft of servicing unit and the rotating shaft of reversing motor 13, by the effect of clutch 14, the first gear 17 and the relevant action of reversing motor 13 are achieved, in the time of revolution starting, accumulator 2 drives reversing motor 13 to rotate, clutch 14 closures, thereby reversing motor 13 drives the first gear 17 to rotate, and adds the power of main Hydraulic slewing system, the two drives together revolving dial wraparound to turn support gear ring 1 and rotates, like this, in ensureing the revolving dial normal starting time, greatly reduce the power configuration of main Hydraulic slewing system, be conducive to energy-conservation and cost-saving, in the time of rotary braking, clutch 14 closures, main Hydraulic slewing system disconnects.Revolving dial, under effect of inertia, drives the first gear 17 to rotate, and then drives reversing motor 13 to rotate, can process to filling of accumulator 2 thereby complete.
Particularly, auxiliary Hydraulic slewing system also comprises fuel tank, the first one way valve 41, the second one way valve 42, the 3rd one way valve 43, the 4th one way valve 44, the first cartridge valve 51, the second cartridge valve 52, the 3rd cartridge valve 53, the 4th cartridge valve 54, the first reversal valve 61, the second reversal valve 62, inlet port S, the first overflow valve 11 and the second overflow valve 12, the first reversal valve 61 and the second reversal valve 62 are two position four-way solenoid valves, the first power mouth B of reversing motor 13 is connected with accumulator 2 by the first one way valve 41, the second power mouth A of reversing motor 13 is connected with accumulator 2 by the second one way valve 42, the first hydraulic fluid port of the first cartridge valve 51 and the second cartridge valve 52 is connected with the first power mouth B, the first hydraulic fluid port of the 3rd cartridge valve 53 and the 4th cartridge valve 54 is connected with the second power mouth A, the second hydraulic fluid port of the second cartridge valve 52 and the 3rd cartridge valve 53 is connected with accumulator 2, and the first cartridge valve 51 is connected with fuel tank with the second hydraulic fluid port of the 4th cartridge valve 54, the control port of the first cartridge valve 51 and the second cartridge valve 52 is connected with two oil-outs of the first reversal valve 61 respectively, the control port of the 3rd cartridge valve 53 and the 4th cartridge valve 54 is connected with two oil-outs of the second reversal valve 62 respectively, the first oil-in of the first reversal valve 61 and the second reversal valve 62 is connected with accumulator 2, and the first reversal valve 61 is connected with fuel tank with the second oil-in of the second reversal valve 62, inlet port S is connected with the second power mouth A with the first power mouth B of reversing motor 13 with the 4th one way valve 44 by the 3rd one way valve 43 respectively, while filling energy for reversing motor 13, provide hydraulic oil, the first overflow valve 11 and the second overflow valve 12 are connected in parallel with the 3rd one way valve 43 and the 4th one way valve 44 respectively.
It should be noted that, above-mentioned inlet port S is for reversing motor 13 in the time that pump uses, and for reversing motor 13 provides hydraulic oil, this inlet port S can be connected with fuel tank, also can be connected with other oil sources; In addition, clutch 14 can be mechanical driving structure, preferably, clutch 14 is hydraulic-driven structures, and auxiliary Hydraulic slewing system also comprises the 3rd reversal valve 9 and the 4th reversal valve 10, the 3rd reversal valve 9 and the 4th reversal valve 10 are two-bit triplet electromagnetic valve, and the first hydraulic fluid port of the 3rd reversal valve 9 and the 4th reversal valve 10 is connected with the oil-in of clutch 14 with brake 15 respectively; The second hydraulic fluid port of the 3rd reversal valve 9 and the 4th reversal valve 10 is connected with accumulator 2, and the 3rd hydraulic fluid port is connected with fuel tank.
As shown in Figure 2, concrete syndeton and the operating principle of auxiliary slewing equipment are: the first gear 17 supports gear ring 1 with revolution and engages, and is connected with axle sleeve 21; Reversing motor 13 is connected with connecting axle 26 by brake 15, reductor 16; Axle sleeve 21 and connecting axle 26 are by friction plate group 22 transferring power; Promote piston 25 to left movement by oil-in C pressure oil, baffle plate 24 is along with the motion control friction plate group 22 of piston 25 engages, and spring 23 is for resetting baffle plate 24.
One as above-mentioned specific embodiment is improved, auxiliary Hydraulic slewing system also comprises on-off valve 7, this on-off valve 7 can be ball valve, the first hydraulic fluid port of on-off valve 7 is connected with accumulator 2, the second hydraulic fluid port is connected with external oil sources, above-mentioned external oil sources can be the extra hydraulic pump arranging, and can be also the oil sources of external main Hydraulic slewing system.When engineering machinery was not worked after a period of time, due to the leakage of hydraulic oil, while causing slew gear starting, the pressure of accumulator 2 is inadequate, now just can utilize external oil sources, is first accumulator 2 pressurisings, ensures the smooth starting of slew gear; Moreover auxiliary Hydraulic slewing system also comprises that the 3rd overflow valve 8, the three overflow valves 8 are arranged on the oil circuit between the first hydraulic fluid port and the fuel tank of on-off valve 7, protection accumulator 2 is not damaged.In addition, auxiliary Hydraulic slewing system also comprises pressure switch 3, this pressure switch 3 is connected with accumulator 2, for detection of the pressure size of accumulator 2 hydraulic fluid ports, and pressure switch 3 is electrically connected with the first reversal valve 61, the second reversal valve 62, on-off valve 7, the high-voltage contact action of pressure switch 3, accumulator energy storage completes, on-off valve 7 dead electricity, cut off outside oil sources input, the low-pressure contact action of pressure switch 3, accumulator is released and can be completed, the first reversal valve 61 or the second reversal valve 62 dead electricity, revolving dial is driven by main Hydraulic slewing system.
The revolution energy conserving system of above-mentioned specific embodiment, process and the principle of its revolution starting and rotary braking are specially:
1. starting clockwise:
The first reversal valve 61 obtains electric, spool is positioned at upper, the second reversal valve 62 dead electricity, spool is positioned at the next, the 3rd reversal valve 9 and the 4th reversal valve 10 obtain electric, spool is positioned at left position, the hydraulic oil of accumulator 2 orders about brake 15 and opens, clutch 14 closures, and the high-pressure oil flow of accumulator 2 is the first power mouth B to reversing motor 13 through the second cartridge valve 52, ordering about reversing motor 13 rotates, reversing motor 13 orders about the first gear 17 and rotates, ordering about revolving dial together with main Hydraulic slewing system rotates, oil return is from the second power mouth A of reversing motor 13 the 4th cartridge valve 54 of flowing through, finally flow into fuel tank, the pressure drop that reaches rated speed or accumulator 2 when revolving dial is prescribed a time limit to the lower of pressure switch 3, the first reversal valve 61 and the 3rd reversal valve 9 dead electricity, clutch 14 is thrown off, accumulator 2 auxiliary starters finish, the first gear 17 dallies, in whole starting process, main Hydraulic slewing system is normally worked.
2. starting counterclockwise:
The second reversal valve 62 obtains electric, spool is positioned at upper, the first reversal valve 61 dead electricity, spool is positioned at the next, the 3rd reversal valve 9 and the 4th reversal valve 10 obtain electric, spool is positioned at left position, the hydraulic oil of accumulator 2 orders about brake 15 and opens, clutch 14 closures, and the high-pressure oil flow of accumulator 2 is the second power mouth A to reversing motor 13 through the 3rd cartridge valve 53, ordering about reversing motor 13 rotates, reversing motor 13 orders about the first gear 17 and rotates, ordering about revolving dial together with main Hydraulic slewing system rotates, oil return is from the first power mouth B of reversing motor 13 first cartridge valve 51 of flowing through, finally flow into fuel tank, the pressure drop that reaches rated speed or accumulator 2 when revolving dial is prescribed a time limit to the lower of pressure switch 3, the second reversal valve 62 and the 3rd reversal valve 9 dead electricity, clutch 14 is thrown off, accumulator 2 auxiliary starters finish, the first gear 17 dallies, in whole starting process, main Hydraulic slewing system is normally worked.
3. braking clockwise:
The power of main Hydraulic slewing system disconnects, and revolving dial is rotated further under effect of inertia; The first reversal valve 61 and the second reversal valve 62 dead electricity, the 3rd reversal valve 9 and the 4th reversal valve 10 obtain electric, brake 15 is opened, clutch 14 closures, revolving dial drives reversing motor 13 to rotate, and now reversing motor 13, when pump uses, arrives the first power mouth B of reversing motor 13 through the 3rd one way valve 43 after inlet port S oil suction, for reversing motor 13 fuel feeding, give accumulator 2 pressurisings from the second power mouth A hydraulic oil out through the second one way valve 42; If when the pressure of the second power mouth A reaches the setting pressure of the second overflow valve 12, hydraulic oil now flow to the first power mouth B through the second overflow valve 12, the 3rd one way valve 43, in this process, the rotating speed of revolving dial reduces gradually, in the time that the rotating speed of reversing motor 13 is reduced to setting value, revolving dial braking, accumulator 2 pressurisings finish.
4. braking counterclockwise:
The power of main Hydraulic slewing system disconnects, and revolving dial is rotated further under effect of inertia; The first reversal valve 61 and the second reversal valve 62 dead electricity, the 3rd reversal valve 9 and the 4th reversal valve 10 obtain electric, brake 15 is opened, clutch 14 closures, revolving dial drives reversing motor 13 to rotate, and now reversing motor 13, when pump uses, arrives the second power mouth A of reversing motor 13 through the 4th one way valve 44 after inlet port S oil suction, for reversing motor 13 fuel feeding, give accumulator 2 pressurisings from the first power mouth B hydraulic oil out through the first one way valve 41; If when the pressure of the first power mouth B reaches the setting pressure of the first overflow valve 11, hydraulic oil now flow to the second power mouth A through the first overflow valve 11, the 4th one way valve 44, in this process, the rotating speed of revolving dial reduces gradually, in the time that the rotating speed of reversing motor 13 is reduced to setting value, revolving dial braking, accumulator 2 pressurisings finish.
5. normally revolution:
Main Hydraulic slewing system driven revolving dial work, now the 3rd reversal valve 9 dead electricity, clutch 14 is thrown off, and the first gear 17 dallies.
Above process implementation the recovery of revolving dial when braking energy, reduced the power configuration of main Hydraulic slewing system, reduced energy consumption, also saved cost.
In addition, the utility model specific embodiment also provides a kind of engineering machinery with slew gear, and slew gear comprises revolution support gear ring 1, and this project machinery is also provided with above-mentioned any one revolution energy conserving system.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (10)

1. a revolution energy conserving system, it is characterized in that, comprise revolving dial, turn round the auxiliary Hydraulic slewing system that supports gear ring (1), auxiliary slewing equipment, main Hydraulic slewing system and be independent of described main Hydraulic slewing system, described auxiliary Hydraulic slewing system comprises reversing motor (13) and accumulator (2), described accumulator (2) stores the energy of revolving dial while driving reversing motor (13) rotation and rotary braking while starting for turning round, described main Hydraulic slewing system is used for driving revolving dial to rotate; Described auxiliary slewing equipment comprises the first gear (17) and the clutch (14) that coaxially set gradually, described the first gear (17) supports gear ring (1) with revolution and engages, and described clutch (14) is for turning round combination and the disengaging between the rotating shaft of servicing unit and the rotating shaft of described auxiliary Hydraulic slewing system reversing motor (13).
2. revolution energy conserving system according to claim 1, is characterized in that, described auxiliary Hydraulic slewing system also comprises:
Fuel tank, the first one way valve (41) and the second one way valve (42), the first power mouth (B) of described reversing motor (13) is connected with accumulator (2) by the first one way valve (41), and the second power mouth (A) of described reversing motor (13) is connected with accumulator (2) by the second one way valve (42);
The first cartridge valve (51), the second cartridge valve (52), the 3rd cartridge valve (53), the 4th cartridge valve (54), the first reversal valve (61) and the second reversal valve (62), the first hydraulic fluid port of described the first cartridge valve (51) and the second cartridge valve (52) is connected with described the first power mouth (B), the first hydraulic fluid port of described the 3rd cartridge valve (53) and the 4th cartridge valve (54) is connected with described the second power mouth (A), the second hydraulic fluid port of described the second cartridge valve (52) and the 3rd cartridge valve (53) is connected with described accumulator (2), the second hydraulic fluid port of described the first cartridge valve (51) and the 4th cartridge valve (54) is connected with described fuel tank, the control port of described the first cartridge valve (51) and the second cartridge valve (52) is connected with two oil-outs of described the first reversal valve (61) respectively, the control port of described the 3rd cartridge valve (53) and the 4th cartridge valve (54) is connected with two oil-outs of described the second reversal valve (62) respectively, the first oil-in of described the first reversal valve (61) and the second reversal valve (62) is connected with accumulator (2), and the first reversal valve (61) is connected with fuel tank with the second oil-in of the second reversal valve (62),
Inlet port (S), the 3rd one way valve (43), the 4th one way valve (44), the first overflow valve (11) and the second overflow valve (12), described inlet port (S) is connected with the second power mouth (A) with the first power mouth (B) of described reversing motor (13) with the 4th one way valve (44) by the 3rd one way valve (43) respectively, and described the first overflow valve (11) and the second overflow valve (12) are connected in parallel with the 3rd one way valve (43) and the 4th one way valve (44) respectively.
3. revolution energy conserving system according to claim 2, it is characterized in that, described revolution energy conserving system also comprises brake (15), described auxiliary Hydraulic slewing system also comprises the 3rd reversal valve (9) and the 4th reversal valve (10), and described brake (15) and clutch (14) are hydraulic-driven structure; The first hydraulic fluid port of described the 3rd reversal valve (9) and the 4th reversal valve (10) is connected with the oil-in of clutch (14) with brake (15) respectively; The second hydraulic fluid port of described the 3rd reversal valve (9) and the 4th reversal valve (10) is connected with accumulator (2), and the 3rd hydraulic fluid port is connected with fuel tank.
4. revolution energy conserving system according to claim 2, is characterized in that, described the first reversal valve (61) and the second reversal valve (62) are two position four-way solenoid valves.
5. revolution energy conserving system according to claim 3, is characterized in that, described auxiliary Hydraulic slewing system also comprises pressure switch (3), and described pressure switch (3) is connected with accumulator (2).
6. revolution energy conserving system according to claim 3, is characterized in that, described the 3rd reversal valve (9) and the 4th reversal valve (10) are two-bit triplet electromagnetic valve.
7. according to the revolution energy conserving system described in claim 2-6 any one, it is characterized in that, described auxiliary Hydraulic slewing system also comprises on-off valve (7), the first hydraulic fluid port of described on-off valve (7) is connected with described accumulator (2), and the second hydraulic fluid port is connected with external oil sources.
8. revolution energy conserving system according to claim 7, is characterized in that, described on-off valve (7) is ball valve.
9. revolution energy conserving system according to claim 7, it is characterized in that, described auxiliary Hydraulic slewing system also comprises the 3rd overflow valve (8), and described the 3rd overflow valve (8) is arranged on the oil circuit between the first hydraulic fluid port and the fuel tank of described on-off valve (7).
10. an engineering machinery, comprises slew gear, it is characterized in that, also comprises the revolution energy conserving system described in claim 1-9 any one, and described slew gear comprises that described revolution supports gear ring (1).
CN201420356876.5U 2014-06-30 2014-06-30 A kind of revolution energy conserving system and engineering machinery Active CN204001036U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107420357A (en) * 2017-07-21 2017-12-01 广西柳工机械股份有限公司 Closed type hydraulic system
CN108775041A (en) * 2018-07-05 2018-11-09 方碧水 A kind of excavator swing arm potential energy recovery system with auxiliary cylinder
CN108797693A (en) * 2018-07-05 2018-11-13 方碧水 A kind of excavator with stable energy-recuperation system
CN108797694A (en) * 2018-07-05 2018-11-13 方碧水 A kind of excavator swing arm potential energy recovery system with auxiliary cylinder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107420357A (en) * 2017-07-21 2017-12-01 广西柳工机械股份有限公司 Closed type hydraulic system
CN107420357B (en) * 2017-07-21 2019-01-01 广西柳工机械股份有限公司 Closed type hydraulic system
CN108775041A (en) * 2018-07-05 2018-11-09 方碧水 A kind of excavator swing arm potential energy recovery system with auxiliary cylinder
CN108797693A (en) * 2018-07-05 2018-11-13 方碧水 A kind of excavator with stable energy-recuperation system
CN108797694A (en) * 2018-07-05 2018-11-13 方碧水 A kind of excavator swing arm potential energy recovery system with auxiliary cylinder

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