CN110485506A - Super-tonnage excavator and its rotary braking and repairing hydraulic system, method - Google Patents
Super-tonnage excavator and its rotary braking and repairing hydraulic system, method Download PDFInfo
- Publication number
- CN110485506A CN110485506A CN201910762665.9A CN201910762665A CN110485506A CN 110485506 A CN110485506 A CN 110485506A CN 201910762665 A CN201910762665 A CN 201910762665A CN 110485506 A CN110485506 A CN 110485506A
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- China
- Prior art keywords
- valve
- electric proportional
- rotary
- super
- level overflow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/225—Control of steering, e.g. for hydraulic motors driving the vehicle tracks
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a kind of super-tonnage excavator and its rotary braking and repairing hydraulic system, method, super-tonnage excavator rotary braking and repairing hydraulic system include rotary reducer, rotary motor, and rotary motor is connected with second level overflow valve group；Rotary reducer is equipped with the component that tests the speed；Second level overflow valve group is connected with electric proportional valve group, and electric proportional valve group is connected with pioneer pump, and control signal is connected with Vehicle Controller again；When turning round pilot handle Hui Zhongwei, Vehicle Controller detects rotational speed by the component that tests the speed, and the oil pressure relief of second level overflow valve is controlled with this, achievees the effect that reduce excavator revolution impact.
Description
Technical field
The present invention relates to engineering machinery fields, provide a kind of applied to super-tonnage excavator rotary braking and repairing
Hydraulic system.
Background technique
The rotary reducer of super-tonnage excavator is being turned round due to manufacturing process problem, not set anti-rebound valve
It when braking, is braked by high-pressure overflow valve, excavator manipulator feels that complete machine buckles are big, does not feel like oneself, to hydraulic part
Service life also has a significant impact, and after excavator does revolution movement, when turning round pilot handle Hui Zhongwei, main valve stops to revolution horse
Up to fuel feeding, rotary reducer drives motor running, at this time overflow valve high pressure kicks, due to pressure since inertia will continue to operate
It is larger, it may appear that biggish load shock, it is also possible to rebound in the opposite direction, vehicle can be made big impact occur.
Summary of the invention
Insufficient according to prior art, the present invention provides a kind of super-tonnage excavator rotary braking and repairing hydraulic system
And method.
The present invention is realized by following technical scheme:
Super-tonnage excavator rotary braking and repairing hydraulic system, including rotary reducer, rotary motor, rotary motor connection
There is second level overflow valve group；The rotary reducer is equipped with the component that tests the speed；The second level overflow valve group is connected with electric proportional valve group,
The electric proportional valve group is connected with pioneer pump, and control signal is connected with Vehicle Controller；When turning round pilot handle Hui Zhongwei,
Vehicle Controller detects rotational speed by the component that tests the speed, and the oil pressure relief of second level overflow valve is controlled with this.
Further, the component that tests the speed is velocity sensor.
Further, the second level overflow valve group includes second level overflow valve I, second level overflow valve II；The electric proportional valve group packet
Include electric proportional valve I, electric proportional valve II；The electric proportional valve I, electric proportional valve II control signal and are connected respectively with Vehicle Controller,
The electric proportional valve I is connected with second level overflow valve I again, and the electric proportional valve II is connected with second level overflow valve II again.
Further, handle solenoid valve one end is connected with pioneer pump, the handle solenoid valve other end and one-way throttle
Valve be connected, open dead-man's handle, handle solenoid valve obtain it is electric, pioneer pump by one-way throttle valve be rotary reducer unlock.
Further, giving young employees remedial-courses in general knowledge and vocational skills oil valve is provided in rotary system, giving young employees remedial-courses in general knowledge and vocational skills oil valve is connected in parallel, and hydraulic oil passes through repairing in parallel
Valve is rotary motor repairing.
Super-tonnage excavator rotary braking and oil supplement method, operation excavator turn round pilot handle, and excavator starts back
Turn, as handle Hui Zhongwei, rotary reducer is since inertia drives rotary motor to continue to turn round, and velocity sensor issues letter at this time
Number, Vehicle Controller gives electric proportional valve group electric signal according to rotational speed, for controlling the big of second level overflow valve group overflow value
Small, the oil pressure relief of second level overflow valve group is got higher by low, effectively reduces the impact of excavator.
Further, giving young employees remedial-courses in general knowledge and vocational skills oil valve is provided in rotary system, giving young employees remedial-courses in general knowledge and vocational skills oil valve is connected in parallel, and hydraulic oil passes through repairing in parallel
Valve is rotary motor repairing, it is sufficient to guarantee system repairing, and can not be emptied in the case where blocking.
Further, the second level overflow valve group includes second level overflow valve I, second level overflow valve II；The electric proportional valve group packet
Include electric proportional valve I, electric proportional valve II；The electric proportional valve I, electric proportional valve II control signal and are connected respectively with Vehicle Controller,
The electric proportional valve I is connected with second level overflow valve I again, and the electric proportional valve II is connected with second level overflow valve II again.
Further, handle solenoid valve one end is connected with pioneer pump, the handle solenoid valve other end and one-way throttle
Valve be connected, open dead-man's handle, handle solenoid valve obtain it is electric, pioneer pump by one-way throttle valve be rotary reducer unlock.
Super-tonnage excavator, including super-tonnage excavator rotary braking above-mentioned and repairing hydraulic system.
The invention has the advantages that:
1. braked when turning round Hui Zhongwei, by detecting rotational speed, the oil pressure relief of second level overflow valve is controlled, is slowed down back
Turn impact.
2. this setting giving young employees remedial-courses in general knowledge and vocational skills oil valve of rotary system, guarantees the topping up of oil of rotary system, avoids emptying phenomenon.
3. the rotational speed when detection braking of installation speed sensor, Vehicle Controller can pass through velocity sensor
Signal controls electric proportional valve, and the oil pressure relief of stepless control second level overflow valve makes buffering effect more preferably.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the present invention, for those of ordinary skill in the art, without any creative labor, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is super-tonnage excavator rotary braking and repairing hydraulic system principle figure of the invention.
In figure: 1. velocity sensors；2. rotary motor；3. second level overflow valve I；4, Fill valve I；5, Fill valve II；6, it mends
Oil valve III；7, Fill valve IV；8, second level overflow valve II；9. one-way throttle valve；10. handle solenoid valve；11. electric proportional valve I；12.
Electric proportional valve II；13. pioneer pump；14. counterbalance valve.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
As shown in Figure 1, super-tonnage excavator rotary braking and repairing hydraulic system, including rotary reducer, revolution horse
Up to 2, rotary motor 2 is connected with second level overflow valve group；Rotary reducer is equipped with the component that tests the speed；Second level overflow valve group and electric ratio
Valve group is connected, and electric proportional valve group is connected with pioneer pump 13 again, and control signal is connected with Vehicle Controller；When revolution pilot handle
When Hui Zhongwei, Vehicle Controller detects rotational speed by the component that tests the speed, and the oil pressure relief of second level overflow valve is controlled with this.
It should be noted that the component that tests the speed is velocity sensor 1.
Second level overflow valve group includes second level overflow valve I 3, second level overflow valve II 8；Electric proportional valve group include electric proportional valve I 11,
Electric proportional valve II 12；Electric proportional valve I 11, electric proportional valve II 12 control signal and are connected respectively with Vehicle Controller, electric proportional valve I 11
It is connected again with second level overflow valve I 3, electric proportional valve II 12 is connected with second level overflow valve II 8 again.
10 one end of handle solenoid valve is connected with pioneer pump 13, and 10 other end of handle solenoid valve is connected with one-way throttle valve 9, beats
Dead-man's handle is opened, handle solenoid valve 10 must be electric, and pioneer pump 13 is rotary reducer unlock by one-way throttle valve 9.
Giving young employees remedial-courses in general knowledge and vocational skills oil valve is provided in rotary system, two repairing mouths are arranged in repairing valve block, and S1, S2 mouthfuls of repairing valve block common
It is connected to 14 front end of counterbalance valve of system, giving young employees remedial-courses in general knowledge and vocational skills oil valve is connected in parallel, and hydraulic oil passes through Fill valve in parallel as the benefit of rotary motor 2
Oil.
With continued reference to shown in Fig. 1, after excavator operates hand starting excavator, dead-man's handle is opened, handle solenoid valve 10 obtains
Electricity, pioneer pump 13 are rotary reducer unlock by one-way throttle valve 9, and when operating rotary system handle, hydraulic oil passes through master
Valve is revolution fuel feeding, and excavator starts to do revolution movement.When turning round pilot handle Hui Zhongwei, velocity sensor 1 is detected back
Rotary speed, Vehicle Controller export electric signal to electric proportional valve I 11, electric proportional valve II 12, work as digging according to the size of rotational speed
In pick machine revolution just beginning when the braking of position, rotational speed is most fast at this time, i.e. the pressure of electric proportional valve output is maximum, turns round system at this time
Second level overflow valve I 3, the oil pressure relief of second level overflow valve II 8 of system are minimum, and about 130bar slows down overflow valve with speed
Oil pressure relief increase, electric proportional valve I 11, electric proportional valve II 12 stop working when stopping, and the oil pressure relief of second level overflow valve is extensive
Multiple normal condition, oil pressure relief revert to 330bar, are provided with Fill valve I 4 in system, Fill valve II 5, Fill valve III 6,
Fill valve IV 7, S1 and S2 mouthfuls of the repairing mouth of Fill valve are commonly connected to the oil inlet end of system back pressure valve 14, when second level overflow valve overflows
When stream, hydraulic oil is 2 repairing of rotary motor by Fill valve I 4 and Fill valve II 5 or Fill valve III 6 and Fill valve IV 7, is protected
It is sufficient to demonstrate,prove rotary system topping up of oil, even if there is Fill valve obstruction, also can guarantee the topping up of oil of rotary system.
To sum up, the present invention provides a kind of super-tonnage excavator rotary braking and repairing hydraulic systems, when revolution operates
Movement terminates, and when turning round pilot handle Hui Zhongwei, reaches and subtracts to control the size of second level overflow valve by detection rotational speed
The effect of few excavator revolution impact, and in oil-supplementing system, giving young employees remedial-courses in general knowledge and vocational skills oil valve is set, to avoid being emptied for rotary motor.
The present invention also provides a kind of super-tonnage excavators, including above-mentioned super-tonnage excavator rotary braking and repairing
Hydraulic system.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (10)
1. super-tonnage excavator rotary braking and repairing hydraulic system, including rotary reducer, rotary motor, rotary motor connects
It is connected to second level overflow valve group；It is characterized by:
The rotary reducer is equipped with the component that tests the speed；The second level overflow valve group is connected with electric proportional valve group, the electricity ratio
Valve group is connected with pioneer pump, and control signal is connected with Vehicle Controller；
When turning round pilot handle Hui Zhongwei, Vehicle Controller detects rotational speed by the component that tests the speed, and controls second level with this and overflows
Flow the oil pressure relief of valve.
2. super-tonnage excavator rotary braking according to claim 1 and repairing hydraulic system, it is characterised in that: described
The component that tests the speed is velocity sensor.
3. super-tonnage excavator rotary braking according to claim 1 and repairing hydraulic system, it is characterised in that: described
Second level overflow valve group includes second level overflow valve I, second level overflow valve II；The electric proportional valve group includes electric proportional valve I, electric proportional valve
Ⅱ；
The electric proportional valve I, electric proportional valve II control signal and are connected respectively with Vehicle Controller, the electric proportional valve I and with two
Grade overflow valve I is connected, and the electric proportional valve II is connected with second level overflow valve II again.
4. super-tonnage excavator rotary braking according to claim 1 and repairing hydraulic system, it is characterised in that: described
Handle solenoid valve one end is connected with pioneer pump, and the handle solenoid valve other end is connected with one-way throttle valve, opens dead-man's handle,
Handle solenoid valve obtain it is electric, pioneer pump by one-way throttle valve be rotary reducer unlock.
5. super-tonnage excavator rotary braking according to claim 1 and repairing hydraulic system, it is characterised in that: returning
Transfer from one department to another to be provided with giving young employees remedial-courses in general knowledge and vocational skills oil valve in system, giving young employees remedial-courses in general knowledge and vocational skills oil valve is connected in parallel, and it is rotary motor repairing that hydraulic oil, which passes through Fill valve in parallel,.
6. super-tonnage excavator rotary braking and oil supplement method, it is characterised in that: operation excavator turns round pilot handle, excavates
Machine starts to turn round, and as handle Hui Zhongwei, rotary reducer is since inertia drives rotary motor to continue to turn round, velocity pick-up at this time
Device issues signal, and Vehicle Controller gives electric proportional valve group electric signal according to rotational speed, for controlling second level overflow valve group overflow
The oil pressure relief of the size of value, second level overflow valve group is got higher by low, effectively reduces the impact of excavator.
7. a kind of super-tonnage excavator rotary braking according to claim 6 and oil supplement method, it is characterised in that: returning
Transfer from one department to another to be provided with giving young employees remedial-courses in general knowledge and vocational skills oil valve in system, giving young employees remedial-courses in general knowledge and vocational skills oil valve is connected in parallel, and it is rotary motor repairing that hydraulic oil, which passes through Fill valve in parallel, is protected
The repairing of card system is sufficient, and can not be emptied in the case where blocking.
8. a kind of super-tonnage excavator rotary braking according to claim 6 and oil supplement method, it is characterised in that: described
Second level overflow valve group includes second level overflow valve I, second level overflow valve II；The electric proportional valve group includes electric proportional valve I, electric proportional valve
Ⅱ；
The electric proportional valve I, electric proportional valve II control signal and are connected respectively with Vehicle Controller, the electric proportional valve I and with two
Grade overflow valve I is connected, and the electric proportional valve II is connected with second level overflow valve II again.
9. a kind of super-tonnage excavator rotary braking according to claim 8 and oil supplement method, it is characterised in that: described
Handle solenoid valve one end is connected with pioneer pump, and the handle solenoid valve other end is connected with one-way throttle valve, opens dead-man's handle,
Handle solenoid valve obtain it is electric, pioneer pump by one-way throttle valve be rotary reducer unlock.
10. super-tonnage excavator, it is characterised in that: returned including super-tonnage excavator described in any one of claim 1 to 5
The transformation of ownership is moved and repairing hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762665.9A CN110485506A (en) | 2019-08-19 | 2019-08-19 | Super-tonnage excavator and its rotary braking and repairing hydraulic system, method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762665.9A CN110485506A (en) | 2019-08-19 | 2019-08-19 | Super-tonnage excavator and its rotary braking and repairing hydraulic system, method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110485506A true CN110485506A (en) | 2019-11-22 |
Family
ID=68551847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910762665.9A Pending CN110485506A (en) | 2019-08-19 | 2019-08-19 | Super-tonnage excavator and its rotary braking and repairing hydraulic system, method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110485506A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11336133A (en) * | 1998-05-29 | 1999-12-07 | Sumitomo Constr Mach Co Ltd | Cavitation preventing device for hydraulic circuit of revolving system in construction machine |
| JP2008019910A (en) * | 2006-07-11 | 2008-01-31 | Shin Caterpillar Mitsubishi Ltd | Hydraulic control system of working machine |
| CN206015777U (en) * | 2016-08-31 | 2017-03-15 | 徐州徐工挖掘机械有限公司 | Hydraulic crawler excavator turns round energy conserving system |
| CN108343112A (en) * | 2018-02-13 | 2018-07-31 | 徐州徐工矿山机械有限公司 | A kind of super-tonnage excavator revolution unlocking hydraulic pressure system |
| CN108978771A (en) * | 2018-06-28 | 2018-12-11 | 柳州柳工挖掘机有限公司 | Hydraulic slewing system and excavator |
-
2019
- 2019-08-19 CN CN201910762665.9A patent/CN110485506A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11336133A (en) * | 1998-05-29 | 1999-12-07 | Sumitomo Constr Mach Co Ltd | Cavitation preventing device for hydraulic circuit of revolving system in construction machine |
| JP2008019910A (en) * | 2006-07-11 | 2008-01-31 | Shin Caterpillar Mitsubishi Ltd | Hydraulic control system of working machine |
| CN206015777U (en) * | 2016-08-31 | 2017-03-15 | 徐州徐工挖掘机械有限公司 | Hydraulic crawler excavator turns round energy conserving system |
| CN108343112A (en) * | 2018-02-13 | 2018-07-31 | 徐州徐工矿山机械有限公司 | A kind of super-tonnage excavator revolution unlocking hydraulic pressure system |
| CN108978771A (en) * | 2018-06-28 | 2018-12-11 | 柳州柳工挖掘机有限公司 | Hydraulic slewing system and excavator |
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Application publication date: 20191122 |
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| RJ01 | Rejection of invention patent application after publication |