CN102384207A - Engineering machine and movement cushioning device thereof and arm type bucket wheel machine equipped with movement cushioning device - Google Patents
Engineering machine and movement cushioning device thereof and arm type bucket wheel machine equipped with movement cushioning device Download PDFInfo
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- CN102384207A CN102384207A CN2011103300841A CN201110330084A CN102384207A CN 102384207 A CN102384207 A CN 102384207A CN 2011103300841 A CN2011103300841 A CN 2011103300841A CN 201110330084 A CN201110330084 A CN 201110330084A CN 102384207 A CN102384207 A CN 102384207A
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims description 85
- 238000013016 damping Methods 0.000 claims description 25
- 210000000664 rectum Anatomy 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses an engineering machine, a movement cushioning device thereof and an arm type bucket wheel machine equipped with the movement cushioning device. The movement cushioning device comprises a hydraulic ram (21), wherein preferably, one end of the hydraulic ram (21) is connected to a first component of the engineering machine, and the other end of the hydraulic ram (21) is connected to a second component of the engineering machine; a rod chamber and a rodless chamber of the hydraulic ram (21) are communicated with each other through a first oil way and a second oil way connected in parallel, and the valve drift diameter of the first oil way is greater than that of the second oil way; and a controller is connected with the hydraulic ram (21), and is used for controlling the first oil way to be cut off when determining that rapid displacement between the first component and the second component occurs. The movement cushioning device provided by the invention has the beneficial effect that the rapid relative displacement process among components in the engineering machine can be cushioned, and excessive inertia force on the engineering machine can be avoided.
Description
Technical field
The present invention relates to a kind of technical field of engineering machinery protection, the arm-type bucket wheel machine that relates in particular to a kind of engineering machinery and motion damping device thereof and be provided with this device.
Background technique
In the working procedure of many engineering machinery; Especially when work, occur under the situation of some faults; Take place sometimes between parts and the parts relative displacement rapidly (comprise rapidly away from rapidly near in addition case of collision); This situation can produce very big impact force to whole engineering machinery, even causes device damage, thereby causes potential potential safety hazard.
With arm-type bucket wheel machine is example, and general arm-type bucket wheel machine comprises body and pitching assembly, and wherein in when work, body fixes on the ground, the pitching member hinges on body, and can hinged hinge be that the pitching action is carried out in the axle center.End at the pitching assembly is provided with bucket wheel; Because bucket wheel takes the moving element of material when being the bucket wheel machine operation, weight is big, in case fall from the pitching assembly; Can cause that very big skew disequilibrium takes place pitching assembly center of gravity; Just between body and the pitching assembly relative displacement rapidly can take place, make bucket wheel machine receive great impact power, even tumble.
Be that head it off generally can connect the protection wire rope in the existing technology between body and pitching assembly; When the pitching assembly is tumbled action for above-mentioned reasons; This protection wire rope meeting stressed tension of moment exceeds security standpoint and causes whole bucket wheel machine to be tumbled with the pitching action that prevents the pitching assembly.
Yet when stretching fully, the action of pitching assembly has produced very big inertial force at the protection wire rope, the protection wire rope only after full extension moment stressed.The very large impact force that produces in the said process is born by bucket wheel machine fully, is easy to cause the damage of parts in the equipment, therefore causes potential potential safety hazard.
Summary of the invention
The arm-type bucket wheel machine that technical problem to be solved by this invention provides a kind of motion damping device of engineering machinery and is provided with this device; This motion damping device can cushion parts and the relative displacement process rapidly between the parts in the engineering machinery, avoids engineering machinery is produced excessive inertial force.
For solving the problems of the technologies described above, according to an aspect of the present invention, a kind of motion damping device of engineering machinery is provided; This device comprises: hydraulic jack; Wherein, an end of hydraulic jack is connected on first parts of engineering machinery, and the other end is connected on second parts of engineering machinery; First oil circuit and second oil circuit through parallel connection between the rod chamber of hydraulic jack and the rodless cavity are communicated with, and the valve latus rectum of first oil circuit is greater than the valve latus rectum of second oil circuit; Controller is connected with hydraulic jack, controls first oil circuit when rapid displacement takes place and ends judging between first parts and second parts.
Further, also comprise load cell, load cell is arranged between first parts and second parts, is used for the active force between sensing first parts and second parts, and the output action force electrical signal; First input pin of controller is connected with load cell, receives the active force electrical signal, and when the active force electrical signal reaches predefined value, judges the rapid displacement of generation between first parts and second parts.
Further, be provided with solenoid valve in first oil circuit, solenoid valve is connected with first output pin of controller, and the On/Off of controller control electromagnetic valve is to control the conduction and cut-off of first oil circuit; Be provided with relief valve in second oil circuit.
Further, also be provided with throttle valve in second oil circuit, throttle valve is connected with relief valve.
Further, also be provided with three oil circuit parallelly connected between the rod chamber of hydraulic jack and the rodless cavity, be provided with one-way valve in the 3rd oil circuit with first oil circuit; One-way valve only allows the hydraulic oil folk prescription to flow to rod chamber to the rodless cavity from oil cylinder.
Further, also be provided with pressure transducer in the 3rd oil circuit, pressure transducer is used for the oil pressure of sensing the 3rd oil circuit, and the output oil pressure electrical signal; Second input pin of controller is connected with pressure transducer, receive the oil pressure electrical signal and when the oil pressure electrical signal reaches predefined value output alarm signal, and the relative movement between first parts and second parts is interrupted in control.
According to another aspect of the present invention, a kind of engineering machinery is provided also, this project machinery comprises the motion damping device of the engineering machinery of above-mentioned any.
According to a further aspect of the invention, a kind of arm-type bucket wheel machine is provided also, comprising: body fixes on the ground; Pitching assembly, middle part are hinged on the body, and an end of pitching assembly is provided with bucket wheel; And the pitching driving mechanism, comprising: power drum is fixed on the body; Static pulley is fixed on the body; Movable pulley is fixed on the pitching assembly; And the pitching wire rope, the one of which end is fixed on the power drum, and the other end is fixed on the body, and the pitching wire rope is from one of which end to the other end pile warp power drum, static pulley and movable pulley in order; This arm-type bucket wheel machine also comprises the motion damping device of above-mentioned engineering machinery, and wherein, load cell is a pulling force sensor, is arranged on the pitching wire rope; First end of hydraulic jack is connected on the body of arm-type bucket wheel machine, and the other end is connected on the pitching assembly of arm-type bucket wheel machine.
The present invention has following beneficial effect:
In the motion damping device of the engineering machinery among the present invention; The two ends of hydraulic jack connect first parts and second parts respectively; And be communicated with through first oil circuit and second oil circuit between the rod chamber of hydraulic jack and the rodless cavity; When between first parts and second parts rapid displacement taking place, controller is controlled first oil circuit and is ended.And the valve latus rectum of first oil circuit is greater than the valve latus rectum of second oil circuit; Thereby when first oil circuit ends; Only be communicated with between the rod chamber of hydraulic jack and the rodless cavity through the second less oil circuit of valve latus rectum; Piston rod can only slowly move, thereby slows down relatively moving between first parts and second parts, and guarantees to stop the motion between first parts and second parts during to its range at piston rod movement.
Like this, this motion damping device just can play the effect of the motion between buffering first parts and second parts, avoids engineering machinery is produced excessive inertial force and damages the parts in the engineering machinery.Especially break down and cause between first and second parts taking place under the situation of relative fast moving in engineering machinery, can guarantee that moving between first parts and second parts stops lentamente, thereby avoid the generation of accident.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of arm-type bucket wheel machine according to an embodiment of the invention;
Fig. 2 is the hydraulic pressure connection schematic representation according to the motion damping device of the embodiment's of this aspect engineering machinery.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1, comprise hydraulic jack 21 and controller according to the motion damping device of engineering machinery of the present invention.Wherein, an end of hydraulic jack 21 is connected on first parts of engineering machinery, and the other end is connected on second parts of engineering machinery.In the present embodiment, these first parts are body 4, and these second parts are pitching assembly 5, have detailed description in this body 4 and pitching assembly 5 preferred embodiment hereinafter.As shown in Figure 2; First oil circuit and second oil circuit through parallel connection between the rod chamber of hydraulic jack 21 and the rodless cavity are communicated with; In the present embodiment; This first oil circuit is the oil circuit that is provided with solenoid valve 27, and second oil circuit is the oil circuit that is provided with relief valve 25, in the meeting preferred implementations hereinafter such as this solenoid valve 27, relief valve 25 detailed description is arranged.The valve latus rectum of this first oil circuit is greater than the valve latus rectum of this second oil circuit.The controller (not shown) is connected with hydraulic jack 21, controls first oil circuit when rapid displacement takes place and ends judging between first parts and second parts.
Because in this motion damping device; The valve latus rectum of first oil circuit is greater than the valve latus rectum of second oil circuit; Thereby when first oil circuit, the second oil circuit conducting; The piston rod of hydraulic jack 21 can move along with the motion between first parts and second parts, and when first oil circuit ends, only is communicated with through the second less oil circuit of valve latus rectum between the rod chamber of hydraulic jack 21 and the rodless cavity; When relatively moving between first parts and second parts; The piston rod of this hydraulic jack 21 can only slowly move, thereby slows down relatively moving between first parts and second parts, and guarantees to stop the motion between first parts and second parts during to its range at piston rod movement.
Like this, this motion damping device just can play the effect of the motion between buffering first parts and second parts, avoids engineering machinery is produced excessive inertial force and damages the parts in the engineering machinery.Especially break down and cause between first and second parts taking place to guarantee that moving between first parts and second parts stops lentamente, thereby avoiding the generation of accident under the situation that hypervelocity relatively moves in engineering machinery.
Preferably, as shown in Figure 1, this motion damping device also comprises load cell 65, and this load cell 65 is arranged between first parts and second parts, is used for the active force between sensing first parts and second parts, and the output action force electrical signal.In the present embodiment, it is terminal that load cell 65 is arranged on the pitching wire rope.Correspondingly, first input pin of controller is connected with load cell 65, thereby this controller receives the active force electrical signal, and when the active force electrical signal reaches predefined value, judges the rapid displacement of generation between first parts and second parts.In this article, the active force electrical signal " reaches predefined value " and comprises that the active force electrical signal increases to predefined value and is reduced to two kinds of situation of predefined value, decides with concrete operating mode according to first concrete parts and the annexation between second parts.In present embodiment shown in Figure 1, controller is decreased to when being lower than setting value at the active force electrical signal, judges rapid displacement takes place between first parts and second parts, and this has detailed description hereinafter.Controller can be controlled first oil circuit and end judging between first parts and second parts when rapid displacement takes place, and reaching the movement velocity of the piston rod that slows down hydraulic jack 21, and then slows down the effect that relatively moves between first parts and second parts.
As indicated above, and can see that from Fig. 2 in the present embodiment, be provided with solenoid valve 27 in first oil circuit, solenoid valve 27 is connected with first output pin of controller, the On/Off of controller control electromagnetic valve 27 is to control the conduction and cut-off of first oil circuit; Be provided with relief valve 2 in second oil circuit, this relief valve 2 produces enough back pressures, produces enough resistances, the motion that slows down piston rod with the motion to the piston rod of hydraulic jack 21.
Preferably, as shown in Figure 2, also be provided with throttle valve 28 in second oil circuit, this throttle valve 28 is connected with relief valve 25, and this throttle valve 28 can slow down the hydraulic oil flow velocity in second oil circuit, thus the motion that slows down the piston rod of hydraulic jack 21.
More preferably; Between the rod chamber of hydraulic jack 21 and rodless cavity, also be provided with three oil circuit parallelly connected with first oil circuit; Be provided with one-way valve 24 in the 3rd oil circuit; The 3rd oil circuit that is arranged so that of this one-way valve 24 only allows hydraulic oil to flow to rod chamber from the rodless cavity of hydraulic jack 21, and oppositely ends.This is because hydraulic jack will be stretched or contract at the same rate; Piston rod shrinks when moving; It is big that the hydraulic flow that rodless cavity flows out stretches out the flow that rod chamber flows out when moving than piston rod, thus the 3rd oil circuit that is provided with one-way valve 24 make when piston rod shrinks, from the hydraulic oil of rodless cavity can the while via first with fall three oil circuits and flow to rod chamber; And when piston rod stretches out, only flow to rodless cavity via first oil circuit from the hydraulic oil of rod chamber.Like this, just can only select the specification of solenoid valve 27, practice thrift cost with reference to the flow of rod chamber.
As shown in Figure 2, preferably, also be provided with pressure transducer 23 in the 3rd oil circuit, this pressure transducer 23 is used for the oil pressure of sensing oil circuit, and the output oil pressure electrical signal; Correspondingly, second input pin of controller is connected with pressure transducer 23, receive this oil pressure electrical signal and when the oil pressure electrical signal reaches predefined value output alarm signal, and the relative movement between first parts and second parts is interrupted in control.Specifically in the present embodiment; First parts and second parts produce relative movement through the power of power drum 64; When between first parts and second parts, being subjected to displacement or not being subjected to displacement with slower speed; If the pressure transducer 23 in the oil circuit senses oil pressure and is higher than predefined value, then controller can be judged that solenoid valve 27 breaks down and normally not open, thus normally servo-actuated of hydraulic jack 21; This moment, controller can be controlled output alarm signal; And the relative movement between control interruption first parts and second parts, just cut off the power supply of controlling the drive unit of the power drum 64 of relative movement between first parts and second parts, with the protection drive unit.
In the oil circuit pressure gauge 22 can also be set, with the situation in easy-to-operat personnel observation and the judgement oil circuit.
The present invention also provides a kind of engineering machinery, comprises the motion damping device of any above-mentioned engineering machinery.
As shown in fig. 1, the present invention also provides a kind of arm-type bucket wheel machine, and this arm-type bucket wheel machine comprises body 4, pitching assembly 5 and pitching driving mechanism 6.Body 4 is for not pitching assembly and fix on the ground; The middle part of pitching assembly 5 is hinged on the body 4 through articulated elements 41, and an end is provided with bucket wheel 31, just in the end of pitching jib 51 bucket wheel body 31 is arranged; Pitching driving mechanism 6 comprises power drum 64, static pulley 61, movable pulley 62 and pitching wire rope 63.Wherein, power drum 64 is fixed on the body 4; Static pulley 61 is fixed on the body 4; Movable pulley 62 is fixed on the pitching assembly 5; One end of pitching wire rope 63 is fixed on the power drum 64, and the other end is fixed on the body 4, and pitching wire rope 63 is from one of which end to the other end pile warp power drum 64, static pulley 61 and movable pulley 62 in order.
This arm-type bucket wheel machine also comprises the motion damping device of above-mentioned engineering machinery, and wherein, load cell 65 mentioned above is a pulling force sensor, is arranged on the pitching wire rope 63; First end of hydraulic jack 21 is connected on the body 4 of arm-type bucket wheel machine, and the other end is connected on the pitching assembly 5 of arm-type bucket wheel machine.
Under the normal condition, solenoid valve 21 is opened, the first oil circuit conducting, and the piston rod of hydraulic jack 21 moves along with the motion of the pitching jib 51 in body 4 and the pitching assembly 5.To cause pitching wire rope 63 suddenly stressed be zero if the bucket wheel body such as falls at situation; The pulling force sensor pulling force is lower than predefined value, sends electrical signal immediately, and controller and then control electromagnetic valve 27 are closed; Jib is locked; Or only permitted pressure oil and flow to another chamber through throttle valve 28 and/or relief valve 23 with relief valve, because of the hydraulic damping effect, unbalanced pitching jib 51 is slowly stopped.Thereby avoid the bucket wheel machine disequilibrium to produce the huge inertia power of tumbling.
When the normal pitching of bucket wheel machine; When if the pressure of the hydraulic system of control hydraulic jack 21 is higher than preset pressure value; Controller can be controlled output alarm signal according to the oil pressure electrical signal of 23 sensings of pressure transducer; And the relative movement between control interruption body 4 and the pitching assembly 5, the power supply of the drive units such as motor (not shown) of the pitching of cut-out control just assembly motion is with the protection drive unit.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the motion damping device of an engineering machinery is characterized in that, comprising:
Hydraulic jack (21), wherein,
One end of said hydraulic jack (21) is connected on first parts of said engineering machinery, and the other end is connected on second parts of said engineering machinery;
First oil circuit and second oil circuit through parallel connection between the rod chamber of said hydraulic jack (21) and the rodless cavity are communicated with, and the valve latus rectum of said first oil circuit is greater than the valve latus rectum of second oil circuit;
Controller is connected with said hydraulic jack (21), controls said first oil circuit when rapid displacement takes place and ends judging between said first parts and said second parts.
2. the motion damping device of engineering machinery according to claim 1 is characterized in that,
Also comprise load cell (65), said load cell (65) is arranged between said first parts and said second parts, is used for the active force between said first parts of sensing and said second parts, and the output action force electrical signal;
First input pin of said controller is connected with said load cell (65), receives said active force electrical signal, and when said active force electrical signal reaches predefined value, judges the rapid displacement of generation between said first parts and said second parts.
3. the motion damping device of engineering machinery according to claim 1 is characterized in that,
Be provided with solenoid valve (27) in said first oil circuit, said solenoid valve (27) is connected with first output pin of said controller, and said controller is controlled the On/Off of said solenoid valve (27) to control the conduction and cut-off of said first oil circuit;
Be provided with relief valve (25) in said second oil circuit.
4. the motion damping device of engineering machinery according to claim 3 is characterized in that, also is provided with throttle valve (28) in said second oil circuit, and said throttle valve (28) is connected with said relief valve (25).
5. the motion damping device of engineering machinery according to claim 3 is characterized in that,
Also be provided with three oil circuit parallelly connected between the rod chamber of said hydraulic jack (21) and the rodless cavity with said first oil circuit,
Be provided with one-way valve (24) in said the 3rd oil circuit;
Said one-way valve (24) only allows hydraulic oil to flow to rod chamber from hydraulic jack (21) rodless cavity.
6. the motion damping device of engineering machinery according to claim 5 is characterized in that,
Also be provided with pressure transducer (23) in said the 3rd oil circuit, said pressure transducer (23) is used for the oil pressure of the said oil circuit of sensing, and the output oil pressure electrical signal;
Second input pin of said controller is connected with said pressure transducer (23); Receive said oil pressure electrical signal and when said oil pressure electrical signal reaches predefined value output alarm signal, and the relative movement between said first parts and said second parts is interrupted in control.
7. an engineering machinery is characterized in that, comprises the motion damping device of each described engineering machinery among the claim 1-6.
8. arm-type bucket wheel machine comprises:
Body (4);
Pitching assembly (5), middle part are hinged on the said body (4), and said pitching assembly (5) comprises jib (51) bucket wheel (3).
Pitching driving mechanism (6) comprising:
Power drum (64) is fixed on the said body (4);
Static pulley (61) is fixed on the said body (4);
Movable pulley (62) is fixed on the said pitching assembly (5); And
Pitching wire rope (63); The one of which end is fixed on the said power drum (64); The other end is fixed on the said body (4), and said pitching wire rope (63) is from one of which end to the other end said power drum of pile warp (64), said static pulley (61) and said movable pulley (62) in order;
It is characterized in that, also comprise the motion damping device of the described engineering machinery of claim 1-6, wherein,
Said load cell (65) is a pulling force sensor, is arranged on the said pitching wire rope (63);
First end of said hydraulic jack (21) is connected on the body (4) of said arm-type bucket wheel machine, and the other end is connected on the pitching assembly (5) of said arm-type bucket wheel machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110330084 CN102384207B (en) | 2011-10-26 | 2011-10-26 | Engineering machine and movement cushioning device thereof and arm type bucket wheel machine equipped with movement cushioning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110330084 CN102384207B (en) | 2011-10-26 | 2011-10-26 | Engineering machine and movement cushioning device thereof and arm type bucket wheel machine equipped with movement cushioning device |
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| CN102384207A true CN102384207A (en) | 2012-03-21 |
| CN102384207B CN102384207B (en) | 2013-04-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102862456A (en) * | 2012-09-26 | 2013-01-09 | 中联重科股份有限公司 | Suspension system, on-off control system and detection method thereof |
| CN102976226A (en) * | 2012-11-20 | 2013-03-20 | 中联重科物料输送设备有限公司 | Hydraulic jacking device and engineering mechanical equipment with hydraulic jacking device |
| CN105909296A (en) * | 2015-02-20 | 2016-08-31 | 玛珂系统分析和开发有限公司 | Method and an apparatus for determining a swing position of a front auxiliary top beam |
| CN106144651A (en) * | 2016-08-23 | 2016-11-23 | 大连奇重机电成套设备有限公司 | Hanging arm type bucket wheel stacker-reclaimer luffing mechanism balance detecting device |
| CN110685268A (en) * | 2019-09-18 | 2020-01-14 | 长沙中能装备制造有限公司 | Braking system and method of lifting mechanism of dynamic compactor |
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| CN106144651A (en) * | 2016-08-23 | 2016-11-23 | 大连奇重机电成套设备有限公司 | Hanging arm type bucket wheel stacker-reclaimer luffing mechanism balance detecting device |
| CN110685268A (en) * | 2019-09-18 | 2020-01-14 | 长沙中能装备制造有限公司 | Braking system and method of lifting mechanism of dynamic compactor |
| CN110685268B (en) * | 2019-09-18 | 2021-08-13 | 长沙中能装备制造有限公司 | Braking system and method of lifting mechanism of dynamic compactor |
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| Publication number | Publication date |
|---|---|
| CN102384207B (en) | 2013-04-17 |
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