CN105417421A - Safety control system for free falling body winch of dynamic compaction device - Google Patents
Safety control system for free falling body winch of dynamic compaction device Download PDFInfo
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- CN105417421A CN105417421A CN201510889910.4A CN201510889910A CN105417421A CN 105417421 A CN105417421 A CN 105417421A CN 201510889910 A CN201510889910 A CN 201510889910A CN 105417421 A CN105417421 A CN 105417421A
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Abstract
The invention discloses a safety control system for a free falling body winch of a dynamic compaction device. The safety control system comprises the free falling body winch (13), a clutch (12), a clutch control oil way, a clutch flushing radiating oil way (15) and a quantitative gear pump (10). The clutch control oil way comprises a safety control device (2), an energy accumulator (10) and a one-way valve (11), wherein the energy accumulator (10) and the one-way valve (11) are connected with the safety control device (2). The safety control device (2) comprises a fast release enabling control valve (4), an energy accumulator unloading valve (5), a clutch opening control valve (8) and a clutch brake valve (9). According to the safety control system for the free falling body winch of the dynamic compaction device, power failure safety, engine stalling safety and emergency stop safety of the free falling body winch of the dynamic compaction device can be effectively ensured, the risk that a cantilever crane is broken or even a vehicle body is overturned due to sudden air braking when a rammer is released rapidly can be effectively avoided, the risk that the rammer is released rapidly due to misoperation can be effectively avoided, and safety of personnel and equipment on the periphery of the vehicle body or below the rammer is ensured.
Description
Technical field
The present invention relates to a kind of dynamic compaction machinery control system, specifically a kind of dynamic compaction machinery free-falling body elevator safety control system.
Background technology
Dynamic compaction machinery is the common device in current basement process.Dynamic compaction machinery working mechanism is that hammer ram is promoted to certain altitude, then free-falling body is to ground, utilizes hammer ram potential energy to produce powerful impact to ground, reaches the object of improved foundation.The two kinds of mode of operation that break off relations and do not break off relations can be divided into by hammer ram and suspension hook connection mode.The form of construction work that do not break off relations hoist rope is connected with hammer ram all the time, and therefore without the need to repeating hook, required workmen is few, and operating efficiency is high, applies more and more extensive.
Free-falling body hoisting mechanism is the core component of not dynamic compactor with unhooking, can realize band and carry and put soon, to be combined or be separated by clutch control reel with lifting speed reducing.After hammer ram rises and rises to certain altitude, open free-falling body elevator power-transfer clutch, hammer ram is by hoist rope, and band movable reel is transferred together fast; After hammer ram falls earthward, closed free-falling body elevator power-transfer clutch is braked reel.Do not breaking off relations in work progress, elevator is needing frequent to promote, putting the hammer ram of tens tons of weighing soon.If hammer ram is let slip in journey soon, elevator power-transfer clutch closes suddenly, and hammer ram will aloft be braked, and powerful impulsive force can cause the dynamic compactor arm frame even car body that fractures to be tumbled; In addition when hammer ram aloft hovers, if maloperation decontrols pass soon, hammer ram is put soon, may damage the people of below or thing; Therefore, ensure the power down safety of dynamic compaction machinery free-falling body hoisting mechanism, flame-out safety, anxious safety of stopping seems particularly important.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of dynamic compaction machinery free-falling body elevator safety control system, effectively can ensure the power down safety of strong rammer winding, engine off safety and suddenly stop safety.
To achieve these goals, this dynamic compaction machinery free-falling body elevator safety control system comprises free-falling body elevator, power-transfer clutch and clutch control oil, power-transfer clutch rinses heat radiation oil circuit, the quantitative gear pump of clutch control oil is provided, and is connected to oil return line and the oil sump tank of clutch control oil and power-transfer clutch;
Described clutch control oil comprises safety control and connected energy storage and check valve;
Described power-transfer clutch rinses heat radiation oil circuit one end and is connected with safety control, and the other end is connected with power-transfer clutch;
Described safety control comprises puts enable control cock, energy storage unloader valve, power-transfer clutch opening controlling valve and clutch brake valve soon;
Described quantitative gear pump connects described energy storage unloader valve, power-transfer clutch opening controlling valve and energy storage by putting enable control cock soon;
Described safety control connects power-transfer clutch respectively by power-transfer clutch opening controlling valve and clutch brake valve, is provided with and puts in line check valve soon between described power-transfer clutch opening controlling valve and power-transfer clutch.
Further, it is described that to put enable control cock be soon two-bit triplet solenoid directional control valve, initial position hydraulic fluid port P communicates with hydraulic fluid port B, the described hydraulic fluid port P putting enable control cock is soon connected with the outlet of quantitative gear pump, hydraulic fluid port B and power-transfer clutch rinse the oil circuit that dispels the heat and are connected, and hydraulic fluid port A is connected with the hydraulic fluid port P of power-transfer clutch opening controlling valve, the hydraulic fluid port A of energy storage unloader valve and energy storage.
Further, described energy storage unloader valve is 2/2-way solenoid directional control valve, and initial position hydraulic fluid port A communicates with hydraulic fluid port B, and hydraulic fluid port B and power-transfer clutch rinse the oil circuit that dispels the heat and be connected.
Further, described power-transfer clutch opening controlling valve is proportional pressure-reducing valve, the hydraulic fluid port B of the corresponding safety control of the hydraulic fluid port A of power-transfer clutch opening controlling valve, describedly puts the hydraulic fluid port B place that in line check valve is located at safety control soon, described in line check valve of putting soon is connected with the hydraulic fluid port P of power-transfer clutch
Further, described clutch brake valve is 2/2-way solenoid directional control valve, and initial position hydraulic fluid port A and hydraulic fluid port B is obstructed, the hydraulic fluid port A corresponding safety control hydraulic fluid port A of clutch brake valve; The hydraulic fluid port A of described safety control is connected with power-transfer clutch hydraulic fluid port P; Hydraulic fluid port S and the power-transfer clutch of described power-transfer clutch rinse the oil circuit that dispels the heat and are connected, and hydraulic fluid port T is connected with oil sump tank.
Further, the hydraulic fluid port T of described safety control is connected with oil sump tank, and the safety overflow valve passing through to arrange connects gear type pump respectively and power-transfer clutch rinses the oil circuit that dispels the heat.
Further, the hydraulic fluid port T place of described power-transfer clutch opening controlling valve is provided with anti-backflow check valve one, the hydraulic fluid port T of the corresponding safety control of described anti-backflow check valve one.
Further, the hydraulic fluid port B place of described clutch brake valve is provided with anti-backflow check valve two, the hydraulic fluid port T of the corresponding safety control of described anti-backflow check valve two.
Compared with prior art, this dynamic compaction machinery free-falling body elevator safety control system effectively can ensure power down safety, the engine off safety of dynamic compaction machinery free-falling body elevator and suddenly stop safety; Suddenly brake in the air when can effectively avoid hammer ram to put soon and cause jib to fracture danger that even car body tumbles, effectively can prevent maloperation and the hammer ram the caused danger of putting soon, to ensure that around car body or the safety of personnel and equipment below hammer ram.
Accompanying drawing explanation
Fig. 1 is control principle schematic diagram of the present invention;
In figure: 1, quantitative gear pump, 2, safety control, 3, safety overflow valve, 4, enable control cock is put soon, 5, energy storage unloader valve, 6, anti-backflow check valve one, 7, anti-backflow check valve two, 8, power-transfer clutch opening controlling valve, 9, clutch brake valve, 10, energy storage, 11, check valve, 12, elevator power-transfer clutch, 13, free-falling body elevator, 14, oil sump tank, 15, power-transfer clutch rinse heat radiation oil circuit.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, this dynamic compaction machinery free-falling body elevator safety control system comprises free-falling body elevator 13, power-transfer clutch 12 and clutch control oil, power-transfer clutch rinses heat radiation oil circuit 15, the quantitative gear pump 1 of clutch control oil is provided, and is connected to oil return line and the oil sump tank 14 of clutch control oil and power-transfer clutch flushing heat radiation oil circuit 15;
Described clutch control oil comprises safety control 2 and connected energy storage 10 and check valve 11;
Described power-transfer clutch rinses heat radiation oil circuit 15 one end and is connected with safety control 2, and the other end is connected with power-transfer clutch 12;
Described safety control 2 comprises puts enable control cock 4, energy storage unloader valve 5, power-transfer clutch opening controlling valve 8 and clutch brake valve 9 soon;
Described quantitative gear pump 1 connects described energy storage unloader valve 5, power-transfer clutch opening controlling valve 8 and energy storage 10 by putting enable control cock 4 soon;
Described safety control 2 connects power-transfer clutch 12 respectively by power-transfer clutch opening controlling valve 8 and clutch brake valve 9, is provided with and puts in line check valve 11 soon between described power-transfer clutch opening controlling valve 8 and power-transfer clutch 12.
Described enable control cock 4 of putting soon is for two-bit triplet solenoid directional control valve, initial position hydraulic fluid port P communicates with hydraulic fluid port B, the described hydraulic fluid port P putting enable control cock 4 is soon connected with the outlet of quantitative gear pump 1, hydraulic fluid port B and power-transfer clutch rinse the oil circuit 15 that dispels the heat and are connected, and hydraulic fluid port A is connected with the hydraulic fluid port P of power-transfer clutch opening controlling valve 8, the hydraulic fluid port A of energy storage unloader valve 5 and energy storage 10.
Described energy storage unloader valve 5 is 2/2-way solenoid directional control valve, and initial position hydraulic fluid port A communicates with hydraulic fluid port B, and hydraulic fluid port B and power-transfer clutch rinse the oil circuit 15 that dispels the heat and be connected.
Described power-transfer clutch opening controlling valve 8 is proportional pressure-reducing valve, the hydraulic fluid port B of the corresponding safety control 2 of hydraulic fluid port A of power-transfer clutch opening controlling valve 8, describedly put the hydraulic fluid port B place that in line check valve 11 is located at safety control 2 soon, described in line check valve 11 of putting soon is connected with the hydraulic fluid port P of power-transfer clutch 12
Described clutch brake valve 9 is 2/2-way solenoid directional control valve, and initial position hydraulic fluid port A and hydraulic fluid port B is obstructed, the hydraulic fluid port A corresponding safety control 2 hydraulic fluid port A of clutch brake valve 9; The hydraulic fluid port A of described safety control 2 is connected with power-transfer clutch 12 hydraulic fluid port P; Hydraulic fluid port S and the power-transfer clutch of described power-transfer clutch 12 rinse the oil circuit 15 that dispels the heat and are connected, and hydraulic fluid port T is connected with oil sump tank 14.
The hydraulic fluid port T of described safety control 2 is connected with oil sump tank 14, and the safety overflow valve 3 passing through to arrange connects gear type pump 1 respectively and power-transfer clutch rinses the oil circuit 15 that dispels the heat.
The hydraulic fluid port T place of described power-transfer clutch opening controlling valve 8 is provided with anti-backflow check valve 1, the hydraulic fluid port T of the corresponding safety control 2 of described anti-backflow check valve 1.Can effectively prevent from pressure oil from flowing backwards to enter in power-transfer clutch 12.
The hydraulic fluid port B place of described clutch brake valve 9 is provided with anti-backflow check valve 27, the hydraulic fluid port T of the corresponding safety control 2 of described anti-backflow check valve 27.Prevent from pressure oil from flowing backwards equally to enter in power-transfer clutch 12.
The electromagnet Y1 put soon in enable control cock 4 is put enable switch soon by one and is controlled, and controls the commutation of putting enable control cock 4 soon by electric signal.The initial position hydraulic fluid port P putting enable control cock 4 soon communicates with hydraulic fluid port B, and the now outlet of gear type pump 1 is rinsed with power-transfer clutch the oil circuit 15 that dispels the heat and is connected, and it is inoperative that safety control 2 is in unloading condition; Pressing the electromagnet Y1 put soon in enable control cock 4 after putting enable switch soon obtains electric, put enable control cock 4 soon to commutate, the hydraulic fluid port P now putting enable control cock 4 soon communicates with hydraulic fluid port A, and gear type pump 1 delivery pressure oil is supplied to energy storage 10 and power-transfer clutch opening controlling valve 8.Energy storage unloader valve 5 is controlled by engine rotational speed signal, and when driving engine does not have rotating speed, the electromagnet Y2 in energy storage unloader valve 5 must not electricity, and discharged fast by the pressure oil of energy storage 10 inside, it is inoperative to put control system soon; When engine work, the electromagnet Y2 in energy storage unloader valve 5 obtains electric, and energy storage unloader valve 5 commutates, and now the hydraulic fluid port A of energy storage unloader valve 5 and hydraulic fluid port B is obstructed, and energy storage 10 can store oil, puts control system soon and works.Electromagnet Y3 in power-transfer clutch opening controlling valve 8 is controlled by current signal, and the hydraulic fluid port A of power-transfer clutch opening controlling valve 8 exports the pressure oil corresponding with current signal, and pressure oil enters power-transfer clutch 12 through check valve 11, makes it open, and realizes elevator 13 and puts action soon; Check valve 11 realizes power-transfer clutch 12, and to open oil circuit unidirectional locked, stops power-transfer clutch 12 response pressure oil through power-transfer clutch opening controlling valve 8 pressure release.Electromagnet Y4 in clutch brake valve 9 is controlled by hammer ram altitude signal, during initial position, the hydraulic fluid port A of clutch brake valve 9 and hydraulic fluid port B is obstructed, electromagnet Y4 obtain electric after, hydraulic fluid port A communicates with hydraulic fluid port B, power-transfer clutch 12 response pressure oil is through clutch brake valve 9 pressure release, power-transfer clutch 12 closes, and realizes the braking of elevator 13.
The specific works process of this dynamic compaction machinery free-falling body elevator safety control system is as follows:
Putting enable control cock 4 electromagnet Y1 soon to be controlled by an enable switch, put enable control cock 4 after pressing enable switch soon and commutate, putting control system soon by putting propulsion source supply soon.Only have enable switch to press, just can put operation soon, otherwise elevator 13 all can not be put soon in any case, prevents maloperation, guarantee around car body or the safety of maintainer, workmen below hammer ram.
When elevator is put soon, electromagnet Y1, Y2, the Y3 put soon in enable control cock 4, energy storage unloader valve 5 and power-transfer clutch opening controlling valve 8 obtains electric, put enable control cock 4 soon, energy storage unloader valve 5 commutates, power-transfer clutch opening controlling valve 8 pressure oil output, check valve 11 conducting, power-transfer clutch 12 is opened, and elevator 13 is put soon, and hammer ram realizes free-falling body.If the now unexpected power-off of system, then all electromagnet dead electricity, all electromagnetic valves get back to initial position, and power-transfer clutch opening controlling valve 8 no longer provides pressure oil to power-transfer clutch 12.Due to the effect of check valve 11, power-transfer clutch 12 is opened oil circuit unidirectional locked, power-transfer clutch 12 response pressure oil can not through power-transfer clutch opening controlling valve 8 pressure release, simultaneously the hydraulic fluid port A of clutch brake valve 9 and hydraulic fluid port B is obstructed, power-transfer clutch 12 response pressure oil can not through clutch brake valve 9 pressure release, power-transfer clutch 12 is still in opening, and then ensure that elevator 13 continues to put soon, until hammer ram lands safely.Therefore, avoid elevator 13 and letting slip in journey soon, power-transfer clutch 12 suddenly braking and the jib that causes fracture even car body overthrow accident, ensure that the safety of elevator power down.
When dynamic compaction machinery et out of order needs flame-out maintenance, or driving engine accident extinguishing in work progress, now hammer ram may be suspended in the air by elevator 13.The electromagnet Y2 of energy storage unloader valve 5 does not have rotating speed and dead electricity because of driving engine, energy storage unloader valve 5 resets, the hydraulic fluid port A of energy storage unloader valve 5 is communicated with hydraulic fluid port B, and the pressure oil of energy storage 10 inside rinses heat radiation oil circuit 15 through power-transfer clutch and discharges fast, puts control system soon and loses pressure oil-source.If now controller powers on, even if maloperation decontrols pass soon, put control system soon and also can not work, elevator 13 can not be put soon, to ensure that around car body or the safety of maintainer, workmen below hammer ram.Ensure that the safety that elevator is flame-out.
When pressing emergency stop switch, engine off, controller without any output, the electromagnet dead electricity of all electromagnetic valves.Present invention adds safety precautions, can ensure that elevator 13 is always in a safe condition when emergent stop signal:
The first situation, elevator 13 is put soon, after pressing emergency stop switch, due to the effect of check valve 11, power-transfer clutch 12 is opened oil circuit unidirectional locked, power-transfer clutch 12 response pressure oil can not through power-transfer clutch opening controlling valve 8 pressure release, simultaneously the hydraulic fluid port A of clutch brake valve 9 and hydraulic fluid port B is obstructed, and power-transfer clutch 12 response pressure oil can not through clutch brake valve 9 pressure release, and power-transfer clutch 12 is still in opening, and then ensure that elevator 13 continues to put soon, until hammer ram lands safely;
The second situation, hammer ram is suspended in the air by elevator 13, after pressing emergency stop switch, energy storage unloader valve 5 electromagnet Y2 dead electricity, energy storage unloader valve 5 resets, the hydraulic fluid port A of energy storage unloader valve 5 is communicated with hydraulic fluid port B, and the pressure oil of energy storage 10 inside rinses heat radiation oil circuit 15 through power-transfer clutch and discharges fast, puts control system soon and loses pressure oil-source.If now controller powers on, even if maloperation decontrols pass soon, put control system soon and also can not work, elevator 13 can not be put soon, to ensure that around car body or the safety of maintainer, workmen below hammer ram;
The third situation, elevator 13 is in and hoists or decline state, after pressing emergency stop switch, hoist motor stops operating, and elevator 13 stops lifting, hammer ram is still in a certain height and position, now due to energy storage unloader valve 5 electromagnet Y2 dead electricity, energy storage unloader valve 5 resets, and the hydraulic fluid port A of energy storage unloader valve 5 is communicated with hydraulic fluid port B, the pressure oil of energy storage 10 inside rinses heat radiation oil circuit 15 through power-transfer clutch and discharges fast, puts control system soon and loses pressure oil-source.If now controller powers on, even if maloperation decontrols pass soon, put control system soon and also can not work, elevator 13 can not be put soon, to ensure that around car body or the safety of maintainer, workmen below hammer ram.
In sum, this dynamic compaction machinery free-falling body elevator safety control system effectively can ensure power down safety, the engine off safety of dynamic compaction machinery free-falling body elevator and suddenly stop safety; Suddenly brake in the air when can effectively avoid hammer ram to put soon and cause jib to fracture danger that even car body tumbles, effectively can prevent maloperation and the hammer ram the caused danger of putting soon, to ensure that around car body or the safety of personnel and equipment below hammer ram.
Claims (8)
1. a dynamic compaction machinery free-falling body elevator safety control system, comprise free-falling body elevator (13), power-transfer clutch (12) and clutch control oil, power-transfer clutch rinses heat radiation oil circuit (15), the quantitative gear pump (1) of clutch control oil is provided, and is connected to oil return line and the oil sump tank (14) of clutch control oil and power-transfer clutch (12);
It is characterized in that, described clutch control oil comprises safety control (2) and connected energy storage (10) and check valve (11);
Described power-transfer clutch rinses heat radiation oil circuit (15) one end and is connected with safety control (2), and the other end is connected with power-transfer clutch (12);
Described safety control (2) comprises puts enable control cock (4), energy storage unloader valve (5), power-transfer clutch opening controlling valve (8) and clutch brake valve (9) soon;
Described quantitative gear pump (1) connects described energy storage unloader valve (5), power-transfer clutch opening controlling valve (8) and energy storage (10) by putting enable control cock (4) soon;
Described safety control (2) connects power-transfer clutch (12) respectively by power-transfer clutch opening controlling valve (8) and clutch brake valve (9), is provided with and puts in line check valve (11) soon between described power-transfer clutch opening controlling valve (8) and power-transfer clutch (12).
2. a kind of dynamic compaction machinery free-falling body elevator safety control system according to claim 1, is characterized in that,
Described enable control cock (4) of putting soon is for two-bit triplet solenoid directional control valve, initial position hydraulic fluid port P communicates with hydraulic fluid port B, the described hydraulic fluid port P putting enable control cock (4) is soon connected with the outlet of quantitative gear pump (1), hydraulic fluid port B and power-transfer clutch rinse the oil circuit (15) that dispels the heat and are connected, and hydraulic fluid port A is connected with the hydraulic fluid port P of power-transfer clutch opening controlling valve (8), the hydraulic fluid port A of energy storage unloader valve (5) and energy storage (10).
3. a kind of dynamic compaction machinery free-falling body elevator safety control system according to claim 1, is characterized in that,
Described energy storage unloader valve (5) is 2/2-way solenoid directional control valve, and initial position hydraulic fluid port A communicates with hydraulic fluid port B, and hydraulic fluid port B and power-transfer clutch rinse the oil circuit (15) that dispels the heat and be connected.
4. a kind of dynamic compaction machinery free-falling body elevator safety control system according to claim 1, is characterized in that,
Described power-transfer clutch opening controlling valve (8) is proportional pressure-reducing valve, the hydraulic fluid port B of the corresponding safety control (2) of hydraulic fluid port A of power-transfer clutch opening controlling valve (8), describedly put the hydraulic fluid port B place that in line check valve (11) is located at safety control (2) soon, described in line check valve (11) of putting soon is connected with the hydraulic fluid port P of power-transfer clutch (12).
5. a kind of dynamic compaction machinery free-falling body elevator safety control system according to claim 1, is characterized in that,
Described clutch brake valve (9) is 2/2-way solenoid directional control valve, and initial position hydraulic fluid port A and hydraulic fluid port B is obstructed, corresponding safety control (2) the hydraulic fluid port A of hydraulic fluid port A of clutch brake valve (9); The hydraulic fluid port A of described safety control (2) is connected with power-transfer clutch (12) hydraulic fluid port P; Hydraulic fluid port S and the power-transfer clutch of described power-transfer clutch (12) rinse the oil circuit (15) that dispels the heat and are connected, and hydraulic fluid port T is connected with oil sump tank (14).
6. a kind of dynamic compaction machinery free-falling body elevator safety control system according to claim 1, is characterized in that,
The hydraulic fluid port T of described safety control (2) is connected with oil sump tank (14), and the safety overflow valve (3) passing through to arrange connects gear type pump (1) respectively and power-transfer clutch rinses the oil circuit (15) that dispels the heat.
7. a kind of dynamic compaction machinery free-falling body elevator safety control system according to claim 4, is characterized in that,
The hydraulic fluid port T place of described power-transfer clutch opening controlling valve (8) is provided with anti-backflow check valve one (6), the hydraulic fluid port T of the corresponding safety control of described anti-backflow check valve one (6) (2).
8. a kind of dynamic compaction machinery free-falling body elevator safety control system according to claim 5, is characterized in that,
The hydraulic fluid port B place of described clutch brake valve (9) is provided with anti-backflow check valve two (7), the hydraulic fluid port T of the corresponding safety control of described anti-backflow check valve two (7) (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510889910.4A CN105417421B (en) | 2015-12-07 | 2015-12-07 | A kind of dynamic compaction machinery freely falling body elevator safety control system |
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| CN201510889910.4A CN105417421B (en) | 2015-12-07 | 2015-12-07 | A kind of dynamic compaction machinery freely falling body elevator safety control system |
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| CN105417421A true CN105417421A (en) | 2016-03-23 |
| CN105417421B CN105417421B (en) | 2018-05-11 |
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Cited By (3)
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| CN110077978A (en) * | 2019-04-11 | 2019-08-02 | 湖南博邦重工有限公司 | A kind of elevator slipping of clutch alarm system and dynamic compaction machinery |
| CN112524105A (en) * | 2020-11-30 | 2021-03-19 | 湖南省农友农业装备股份有限公司 | Harvester header synchronous transmission system |
| CN113816290A (en) * | 2021-11-24 | 2021-12-21 | 徐工集团工程机械股份有限公司建设机械分公司 | Intelligent control valve and system for realizing heavy-load constant-speed lowering |
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| CN113816290A (en) * | 2021-11-24 | 2021-12-21 | 徐工集团工程机械股份有限公司建设机械分公司 | Intelligent control valve and system for realizing heavy-load constant-speed lowering |
| CN113816290B (en) * | 2021-11-24 | 2022-02-18 | 徐工集团工程机械股份有限公司建设机械分公司 | Intelligent control valve and system for realizing heavy-load constant-speed lowering |
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| Publication number | Publication date |
|---|---|
| CN105417421B (en) | 2018-05-11 |
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