CN105386478A - Excavator and movable arm potential energy recycling system thereof - Google Patents
Excavator and movable arm potential energy recycling system thereof Download PDFInfo
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- CN105386478A CN105386478A CN201510867595.5A CN201510867595A CN105386478A CN 105386478 A CN105386478 A CN 105386478A CN 201510867595 A CN201510867595 A CN 201510867595A CN 105386478 A CN105386478 A CN 105386478A
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- oil cylinder
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Abstract
The invention provides an excavator and a movable arm potential energy recycling system thereof. The excavator comprises a frame, a walking device, a control device and a working device, wherein the walking device, the control device and the working device are mounted on the frame. The working device comprises a movable arm and the movable arm potential energy recycling system. The movable arm potential energy recycling system comprises an oil tank, a main control oil cylinder, energy accumulation oil cylinders, energy accumulators, a main control valve and an automatic pressure relief device, wherein the oil tank is mounted on the frame of the excavator; the main control oil cylinder is mounted on the frame and connected with the movable arm of the excavator; the energy accumulation oil cylinders are mounted on the frame and connected with the movable arm of the excavator; the energy accumulators are mounted on the frame and connected with the energy accumulation oil cylinders; the main control valve is mounted on the frame and connected with the oil tank, the main control oil cylinder and the energy accumulation oil cylinders; the automatic pressure relief device comprises a pressure relief valve, a stop valve and ball valves, the ball valves are connected with the energy accumulators and the stop valve, the stop valve is connected with the pressure relief valve and the oil tank, and the pressure relief valve is connected with the oil tank and a rodless cavity of each energy accumulation oil cylinder and used for reducing the counter-acting force of the movable arm when excavating work is conducted by the excavator.
Description
Technical field
The present invention relates to a kind of excavator and movable arm potential energy recovery system thereof, particularly a kind of excavator and there is the movable arm potential energy recovery system of automatic pressure relief device.
Background technology
Hydraulic crawler excavator is a kind of widely used engineering machinery, is widely used in infrastructure, and because the growing tension of the energy and people's environmental protection are anticipated the enhancing looked, energy-saving and environmental protection become the trend of excavator development.In energy-saving and environmental protection excavator, the potential energy that swing arm decline is reclaimed in usual employing stores in accumulator, the power save mode of the kinetic energy that it can be used as auxiliary swing arm to rise again, wherein, movable arm cylinder of excavator is divided into master control oil cylinder and energy storage oil cylinder, but when excavator digging operation due to energy storage oil cylinder reaction force, the digging operation of excavator can be affected.
Summary of the invention
Technical problem to be solved by this invention is the above-mentioned defect for prior art, provides a kind of excavator and has the boom cylinder potential energy recovery system of automatic pressure relief device.
To achieve these goals, the invention provides a kind of movable arm potential energy recovery system of excavator, comprising:
Fuel tank, is arranged on the vehicle frame of excavator;
Master control oil cylinder, to be arranged on described vehicle frame and to be connected with the swing arm of described excavator;
Energy storage oil cylinder, to be arranged on described vehicle frame and to be connected with the swing arm of described excavator;
Accumulator, to be arranged on described vehicle frame and to be connected with described energy storage oil cylinder;
Main control valve, is arranged on described vehicle frame and is also connected with described fuel tank, described master control oil cylinder and described energy storage oil cylinder respectively;
Wherein, described movable arm potential energy recovery system also comprises:
Automatic pressure relief device, comprise pressure-relief valve, stop valve and ball valve, described ball valve is connected with described accumulator and described stop valve respectively, described stop valve is connected with described pressure-relief valve and described fuel tank respectively, described pressure-relief valve is connected with the rodless cavity of described fuel tank and described energy storage oil cylinder respectively, when carrying out digging operation for described excavator, discharge the pressure of the rodless cavity of described energy storage oil cylinder, make the rodless cavity pressure of described energy storage oil cylinder equal with oil return, the reaction force of described swing arm during to reduce digging operation.
Above-mentioned movable arm potential energy recovery system, wherein, described pressure-relief valve is two position three-way valve, for the oil circuit break-make of the rod chamber and described fuel tank that control described energy storage oil cylinder to be laid down by the hydraulic fluid pressure in described energy storage oil cylinder, reduces reaction force when described swing arm excavates.
Above-mentioned movable arm potential energy recovery system, wherein, the pressure relief opening of described pressure-relief valve is connected with described fuel tank.
Above-mentioned movable arm potential energy recovery system, wherein, described stop valve is two position two-way valve, for the oil circuit break-make of the rod chamber and described accumulator that control described energy storage oil cylinder, when excavator digging operation and pressure-relief valve work, close the hydraulic oil of described accumulator to prevent described accumulator release.
Above-mentioned movable arm potential energy recovery system, wherein, described accumulator is the piston accumulator that hydraulic oil and gas can be carried out being separated.
Above-mentioned movable arm potential energy recovery system, wherein, described ball valve is connected with described piston accumulator by self screw thread, and described ball valve is connected with described stop valve by fluid pressure line.
Above-mentioned movable arm potential energy recovery system, wherein, described main control valve is communicated with the rod chamber of described master control oil cylinder and the rodless cavity of described master control oil cylinder respectively, and described main control valve is communicated with the rod chamber of described energy storage oil cylinder.
Above-mentioned movable arm potential energy recovery system, wherein, the setting opening pressure of described pressure-relief valve is greater than the setting opening pressure of described stop valve.
Above-mentioned movable arm potential energy recovery system, wherein, described pressure-relief valve and described stop valve are respectively by being bolted on described vehicle frame.
In order to realize above-mentioned purpose better, present invention also offers a kind of excavator, comprise vehicle frame and be arranged on running gear, control device and the equipment on described vehicle frame, described equipment is connected with described control device, described equipment comprises swing arm and movable arm potential energy recovery system, described movable arm potential energy recovery system is connected with described swing arm, and wherein, described movable arm potential energy recovery system is above-mentioned movable arm potential energy recovery system.
Technique effect of the present invention is:
The hydraulic oil of energy storage oil cylinder rodless cavity is carried out release when digging operation by the present invention, eliminates pressure in energy storage oil cylinder to impact when excavating.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the excavator structure schematic diagram of one embodiment of the invention;
Fig. 2 is the movable arm potential energy recovery system structural representation of one embodiment of the invention; Fig. 3 is the fundamental diagram of Fig. 2.
Wherein, Reference numeral
1 running gear
2 control device
3 equipments
31 swing arms
32 movable arm potential energy recovery systems
321 fuel tanks
322 master control oil cylinders
3221 master control cylinder rod chambers
3222 master control oil cylinder rodless cavities
323 energy storage oil cylinder
3231 energy storage oil cylinder rod chambers
3232 energy storage oil cylinder rodless cavities
324 accumulators
325 main control valves
3251 spool first guide sides
3252 spool second guide sides
3253 accumulation of energy positions
3254 lifting positions
326 automatic pressure relief devices
3261 pressure-relief valves
32611 pressure-relief valve oil-feed positions
32612 pressure-relief valve release positions
3262 stop valves
32621 stop valve oil-feed positions
32622 stop valve close stances
3263 ball valves
4 vehicle frames
Detailed description of the invention
Below in conjunction with accompanying drawing, structural principle of the present invention and operating principle are described in detail
See the excavator structure schematic diagram that Fig. 1, Fig. 1 are one embodiment of the invention.Excavator of the present invention, the running gear 1 comprising vehicle frame 4 and be arranged on this vehicle frame 4, control device 2 and equipment 3, described equipment 3 is connected with described control device 2, described equipment 3 comprises swing arm 31 and movable arm potential energy recovery system 32 etc., described movable arm potential energy recovery system 32 is connected with described swing arm 31, wherein, because of the composition of these other parts of excavator, structure, mutual alignment relation, connection relationship, operating principle and function etc. thereof are more ripe prior art, therefore do not repeat them here, only movable arm potential energy recovery system 32 of the present invention is described in detail below.
See the movable arm potential energy recovery system structural representation that Fig. 2 and Fig. 3, Fig. 2 are one embodiment of the invention, Fig. 3 is the fundamental diagram of Fig. 2.Movable arm potential energy recovery system 32 of the present invention, comprising: fuel tank 321, is arranged on the vehicle frame 4 of excavator, master control oil cylinder 322, is arranged on described vehicle frame 4 and with the swing arm 31 of described excavator and is connected, energy storage oil cylinder 323, is arranged on described vehicle frame 4 and with the swing arm 31 of described excavator and is connected, accumulator 324, to be arranged on described vehicle frame 4 and to be connected with described energy storage oil cylinder 323, main control valve 325, is arranged on described vehicle frame 4 and is also connected with described fuel tank 321, described master control oil cylinder 322 and described energy storage oil cylinder 323 respectively, and automatic pressure relief device 326, comprise pressure-relief valve 3261, stop valve 3262 and ball valve 3263, described ball valve 3263 is connected with described accumulator 324 and described stop valve 3262 respectively, described stop valve 3262 is connected with described pressure-relief valve 3261 and described fuel tank 321 respectively, described pressure-relief valve 3261 is connected with the rodless cavity of described fuel tank 321 and described energy storage oil cylinder 323 respectively, when carrying out digging operation for described excavator, discharge the pressure of the rodless cavity of described energy storage oil cylinder 323, make the rodless cavity pressure of described energy storage oil cylinder 323 equal with oil return, the reaction force of described swing arm 31 during to reduce digging operation.
Wherein, described pressure-relief valve 3261 and described stop valve 3262 are respectively by being bolted on described vehicle frame 4, described pressure-relief valve 3261 is preferably two position three-way valve, for the oil circuit break-make of the rod chamber and described fuel tank 321 that control described energy storage oil cylinder 323 to be laid down by the hydraulic fluid pressure in described energy storage oil cylinder 323, reduce reaction force when described swing arm 31 excavates.The pressure relief opening of described pressure-relief valve 3261 is connected with described fuel tank 321.Described stop valve 3262 is preferably two position two-way valve, for the oil circuit break-make of the rod chamber and described accumulator 324 that control described energy storage oil cylinder 323, when excavator digging operation and pressure-relief valve 3261 work, close the hydraulic oil of described accumulator 324 to prevent the release of described accumulator 324.Hydraulic oil and gas preferably can be carried out the piston accumulator 324 be separated by described accumulator 324.Described ball valve 3263 is connected with described piston accumulator 324 by self screw thread, and described ball valve 3263 is connected with described stop valve 3262 by fluid pressure line.Described main control valve 325 is communicated with described master control cylinder rod chamber 3221 and described master control oil cylinder rodless cavity 3222 respectively, and described main control valve 325 is communicated with described energy storage oil cylinder rod chamber 3231.The setting opening pressure of described pressure-relief valve 3261 is greater than the setting opening pressure of described stop valve 3262.
See Fig. 2, in the present embodiment, fuel tank 321 is communicated with main control valve 325; Main control valve 325 is communicated with master control cylinder rod chamber 3221 and the master control oil cylinder rodless cavity 3222 of master control oil cylinder 322; The energy storage oil cylinder that main control valve 325 is also communicated with energy storage oil cylinder 323 has chamber bar 3231; Energy storage oil cylinder rodless cavity 3232 is communicated with pressure-relief valve 3261; Pressure-relief valve 3261 is communicated with stop valve 3262; Stop valve 3262 is communicated with ball valve 3263; Ball valve 3263 is communicated with piston accumulator 324.Piston accumulator 324 is joined with bolts on the platform of vehicle frame 4, and ball valve 3263 relies on self screw thread to be connected with piston accumulator 324, and ball valve 3263 fluid pressure line is connected with stop valve 3262; Stop valve 3262 is fixed by bolts to above the platform of vehicle frame 4, and pressure-relief valve 3261 is fixed by bolts to above the platform of vehicle frame 4 simultaneously, and rely on fluid pressure line to connect between the two, pressure-relief valve 3261 is also connected with hydraulic oil container 321 simultaneously; The oil-out fluid pressure line of pressure-relief valve 3261 is connected with energy storage oil cylinder rodless cavity 3232, and energy storage oil cylinder rod chamber 3231 is connected with main control valve 325 simultaneously; Main control valve 325 is fixed by bolts to above the platform of vehicle frame 4, and its swing arm 31 spool connection oil-out is connected with master control oil cylinder rodless cavity 3222 and master control cylinder rod chamber 3221 respectively, more than connects and composes a hydraulic circuit.In addition, it should be noted that, Reference numeral fuel tank 321 correspondence in Fig. 3 be same fuel tank, the many places fuel tank 321 in figure is the drawing conventions conveniently expressed in this area.
With reference to Fig. 3, illustrate the specific works process of movable arm potential energy recovery system 32 of the present invention below in conjunction with Fig. 3:
Excavator swing arm 31 declines accumulation of energy process
When handling swing arm 31 pilot handle, pilot pressure promotes main control valve 325 spool first guide side 3251, swing arm 31 spool in main control valve 325 is moved right and commutates to accumulation of energy position 3253, now hydraulic oil enters into the master control cylinder rod chamber 3221 of master control oil cylinder 322 and the energy storage oil cylinder rod chamber 3231 of energy storage oil cylinder 323 through main control valve 325, in the oil cylinder of master control simultaneously 322, the hydraulic oil of master control oil cylinder rodless cavity 3222 flows back to fuel tank 321 by main control valve 325, the hydraulic oil of the energy storage oil cylinder rodless cavity 3232 in energy storage oil cylinder 323 passes through the pressure-relief valve oil-feed position 32611 of pressure-relief valve 3261, the stop valve oil-feed position 32621 of stop valve 3262 and ball valve 3263 enter piston accumulator 324, piston accumulator 324 pressure is raised, thus reach the object of energy storage.
Energy storage oil cylinder 323 stress-relief process during excavator digging operation
When swing arm 31 drops to ground excavation, now energy storage oil cylinder rod chamber 3231 pressure raises, the pressure oil of energy storage oil cylinder rod chamber 3231 controls stop valve 3262 and pressure-relief valve 3261 works, when energy storage oil cylinder rod chamber 3231 pressure rises to stop valve 3262 setting pressure, stop valve 3262 can be made to move to stop valve close stance 32622, the oil circuit of closure piston formula accumulator 324; When energy storage oil cylinder rod chamber 3231 pressure continues to raise (the setting opening pressure of pressure-relief valve 3261 is a little more than stop valve 3262), the pressure of energy storage oil cylinder rod chamber 3231 can make pressure-relief valve 3261 move to pressure-relief valve release position 32612, the pressure oil of energy storage oil cylinder rodless cavity 3232 is communicated with fuel tank 321, lay down its pressure, eliminate reaction force during digging operation.
Excavator swing arm 31 uphill process
When swing arm 31 completes digging operation, handling pilot handle makes swing arm 31 rise, pilot pressure oil promotes main control valve 325 spool second guide side 3252, swing arm spool in main control valve 325 is made to commutate to lifting position 3254, now master control oil cylinder rodless cavity 3222 enters working oil, master control cylinder rod chamber 3221 is communicated with fuel tank 321, pressure step-down, now pressure-relief valve 3261 returns to pressure-relief valve oil-feed position 32611 under spring force, stop valve 3262 returns to stop valve oil-feed position 32621 under spring force, piston accumulator 324 pressure oil is by ball valve 3263, the energy storage oil cylinder rodless cavity 3232 that stop valve 3262 and pressure-relief valve 3261 enter energy storage oil cylinder 323 assists master control oil cylinder 322 to complete swing arm 31 vertical motion.
In prior art when excavator carries out digging operation, because swing arm 31 drops to ground by height point, now energy storage oil cylinder rodless cavity 3232 hydraulic oil pressure indentation enters piston accumulator 324, the pressure of the energy storage oil cylinder rodless cavity 3232 made uprises, now excavator carries out the excavator lack of cutting force that digging operation can make due to the anti-power of work of energy storage oil cylinder 323, the present invention is by pressure-relief valve 3261, the hydraulic oil of energy storage oil cylinder rodless cavity 3232 is connected with fuel tank 321, stop valve 3262 works simultaneously, cut off the path of piston accumulator 324 and energy storage oil cylinder rodless cavity 3232, eliminate reaction force during digging operation.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (10)
1. a movable arm potential energy recovery system for excavator, comprising:
Fuel tank, is arranged on the vehicle frame of excavator;
Master control oil cylinder, to be arranged on described vehicle frame and to be connected with the swing arm of described excavator;
Energy storage oil cylinder, to be arranged on described vehicle frame and to be connected with the swing arm of described excavator;
Accumulator, to be arranged on described vehicle frame and to be connected with described energy storage oil cylinder;
Main control valve, is arranged on described vehicle frame and is also connected with described fuel tank, described master control oil cylinder and described energy storage oil cylinder respectively;
It is characterized in that, described movable arm potential energy recovery system also comprises:
Automatic pressure relief device, when carrying out digging operation for described excavator, discharge the pressure of the rodless cavity of described energy storage oil cylinder, make the rodless cavity pressure of described energy storage oil cylinder equal with oil return, the reaction force of described swing arm during to reduce digging operation, described automatic pressure relief device comprises pressure-relief valve, stop valve and ball valve, described ball valve is connected with described accumulator and described stop valve respectively, described stop valve is connected with described pressure-relief valve and described fuel tank respectively, and described pressure-relief valve is connected with the rodless cavity of described fuel tank and described energy storage oil cylinder respectively.
2. movable arm potential energy recovery system according to claim 1, it is characterized in that, described pressure-relief valve is two position three-way valve, for the oil circuit break-make of the rod chamber and described fuel tank that control described energy storage oil cylinder to be laid down by the hydraulic fluid pressure in described energy storage oil cylinder, reduce reaction force when described swing arm excavates.
3. movable arm potential energy recovery system according to claim 2, is characterized in that, the pressure relief opening of described pressure-relief valve is connected with described fuel tank.
4. the movable arm potential energy recovery system according to claim 1,2 or 3, it is characterized in that, described stop valve is two position two-way valve, for the oil circuit break-make of the rod chamber and described accumulator that control described energy storage oil cylinder, when excavator digging operation and pressure-relief valve work, close the hydraulic oil of described accumulator to prevent described accumulator release.
5. movable arm potential energy recovery system according to claim 4, is characterized in that, described accumulator is the piston accumulator that hydraulic oil and gas can be carried out being separated.
6. movable arm potential energy recovery system according to claim 5, is characterized in that, described ball valve is connected with described piston accumulator by self screw thread, and described ball valve is connected with described stop valve by fluid pressure line.
7. movable arm potential energy recovery system according to claim 1, is characterized in that, described main control valve is communicated with the rod chamber of described master control oil cylinder and the rodless cavity of described master control oil cylinder respectively, and described main control valve is communicated with the rod chamber of described energy storage oil cylinder.
8. movable arm potential energy recovery system according to claim 1, is characterized in that, the setting opening pressure of described pressure-relief valve is greater than the setting opening pressure of described stop valve.
9. movable arm potential energy recovery system according to claim 1, is characterized in that, described pressure-relief valve and described stop valve are respectively by being bolted on described vehicle frame.
10. an excavator, comprise vehicle frame and be arranged on running gear, control device and the equipment on described vehicle frame, described equipment is connected with described control device, described equipment comprises swing arm and movable arm potential energy recovery system, described movable arm potential energy recovery system is connected with described swing arm, it is characterized in that, described movable arm potential energy recovery system is the movable arm potential energy recovery system in the claims 1-9 described in any one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867595.5A CN105386478A (en) | 2015-12-01 | 2015-12-01 | Excavator and movable arm potential energy recycling system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510867595.5A CN105386478A (en) | 2015-12-01 | 2015-12-01 | Excavator and movable arm potential energy recycling system thereof |
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| CN105386478A true CN105386478A (en) | 2016-03-09 |
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| CN201510867595.5A Pending CN105386478A (en) | 2015-12-01 | 2015-12-01 | Excavator and movable arm potential energy recycling system thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594167A (en) * | 2016-12-06 | 2017-04-26 | 天津元章科技有限公司 | Electromechanical mixed shock absorbing mechanism |
| CN106594166A (en) * | 2016-12-06 | 2017-04-26 | 天津高卓科技有限公司 | Electromechanical shock absorbing mechanism controlled by pressure comparison |
| CN106594168A (en) * | 2016-12-06 | 2017-04-26 | 天津元章科技有限公司 | Electromechanical damping mechanism with pilot control function |
| CN106594154A (en) * | 2016-12-06 | 2017-04-26 | 天津迎南科技有限公司 | Electromechanical shock absorption mechanism |
| CN110512669A (en) * | 2019-07-24 | 2019-11-29 | 徐州工业职业技术学院 | A kind of excavator swing arm potential energy recovery system based on accumulator |
| CN111226008A (en) * | 2017-10-13 | 2020-06-02 | 斗山英维高株式会社 | Movable arm speed-increasing hydraulic system of engineering machinery |
| CN111520366A (en) * | 2020-05-12 | 2020-08-11 | 中国重型机械研究院股份公司 | Continuous casting machine cold bed lifting hydraulic control system and method comprising auxiliary power hydraulic cylinder |
| CN112681416A (en) * | 2020-12-15 | 2021-04-20 | 徐州徐工挖掘机械有限公司 | Excavator energy recovery system, energy recovery method and excavator |
| CN114951628A (en) * | 2021-02-24 | 2022-08-30 | 宝山钢铁股份有限公司 | Continuous casting submersed nozzle clamping system and method |
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2015
- 2015-12-01 CN CN201510867595.5A patent/CN105386478A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594167A (en) * | 2016-12-06 | 2017-04-26 | 天津元章科技有限公司 | Electromechanical mixed shock absorbing mechanism |
| CN106594166A (en) * | 2016-12-06 | 2017-04-26 | 天津高卓科技有限公司 | Electromechanical shock absorbing mechanism controlled by pressure comparison |
| CN106594168A (en) * | 2016-12-06 | 2017-04-26 | 天津元章科技有限公司 | Electromechanical damping mechanism with pilot control function |
| CN106594154A (en) * | 2016-12-06 | 2017-04-26 | 天津迎南科技有限公司 | Electromechanical shock absorption mechanism |
| CN111226008A (en) * | 2017-10-13 | 2020-06-02 | 斗山英维高株式会社 | Movable arm speed-increasing hydraulic system of engineering machinery |
| CN110512669A (en) * | 2019-07-24 | 2019-11-29 | 徐州工业职业技术学院 | A kind of excavator swing arm potential energy recovery system based on accumulator |
| CN111520366A (en) * | 2020-05-12 | 2020-08-11 | 中国重型机械研究院股份公司 | Continuous casting machine cold bed lifting hydraulic control system and method comprising auxiliary power hydraulic cylinder |
| CN112681416A (en) * | 2020-12-15 | 2021-04-20 | 徐州徐工挖掘机械有限公司 | Excavator energy recovery system, energy recovery method and excavator |
| CN114951628A (en) * | 2021-02-24 | 2022-08-30 | 宝山钢铁股份有限公司 | Continuous casting submersed nozzle clamping system and method |
| CN114951628B (en) * | 2021-02-24 | 2024-04-05 | 宝山钢铁股份有限公司 | Continuous casting immersion nozzle clamping system and method |
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