CN103966940B - A kind of milling machine and column up-down control device, system and method - Google Patents
A kind of milling machine and column up-down control device, system and method Download PDFInfo
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- CN103966940B CN103966940B CN201410189144.6A CN201410189144A CN103966940B CN 103966940 B CN103966940 B CN 103966940B CN 201410189144 A CN201410189144 A CN 201410189144A CN 103966940 B CN103966940 B CN 103966940B
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Abstract
The invention discloses a kind of milling machine and column up-down control device thereof, system and method, described milling machine comprises column, column oil cylinder and guide cylinder, guide cylinder described in described column hydraulic oil cylinder driving and described column relative sliding, to control milling machine lifting, described column oil cylinder comprises falling-threshold position and work rising maximum position, described control device comprises: the first executing agency, for when described milling machine enters transition operating mode, control described column oil cylinder to extend, and when described column oil cylinder arrives described work rising maximum position, control described column oil cylinder to stop extending.Can accurately control column oil cylinder when milling machine transition by this control device and reach desired location.
Description
Technical field
The present invention relates to milling machine, particularly, relate to a kind of milling machine and column up-down control device, system and method.
Background technology
Milling machine is a kind of equipment required for maintenance of surface construction.At present, planing mill upright post lifting gear has two kinds of duties, and the first is that column rises complete machine to be in walking states, is generally used for transition operating mode; Another kind be column decline complete machine to be in milling state, and by adjustment milling mechanism incision road surface the milling degree of depth meet milling requirement.Fig. 1 shows the structural representation of milling machine.By column 4 and guide cylinder (not shown) relative sliding, the column part outside guide cylinder is shortened (this is referred to as column " shortening "), make milling mechanism 3 incision downwards to respective depth to carry out milling operating mode, when milling machine needs transition, column 4 and guide cylinder relative sliding make the column portion stretches outside guide cylinder (this is referred to as column " elongations ") that frame 2 and milling mechanism are risen to depart from ground, and the walking mechanism 1 that operates completes transition.
Traditional column up-down control mode considers the independent lifting of left and right pillar or the control method of synchronization lifting, meets independence and synchronism.But when entering transition operating mode, prior art normally adopts personal monitoring column to be extended make milling mechanism depart from ground, and this mode, column extended position required when probably cannot reach transition, thus the damage of milling machine may be caused.
Summary of the invention
The object of this invention is to provide a kind of planing mill upright post apparatus for controlling of lifting, system and method, can be avoided owing to not reaching transition desired location by this control device and cause milling machine to damage.
To achieve these goals, the invention provides a kind of planing mill upright post apparatus for controlling of lifting, this milling machine comprises column, column oil cylinder and guide cylinder, guide cylinder described in described column hydraulic oil cylinder driving and described column relative sliding, to control milling machine lifting, described column oil cylinder comprises falling-threshold position, work rising maximum position, described control device comprises: the first executing agency, for when described milling machine enters transition operating mode, control described column oil cylinder to extend, and when described column oil cylinder arrives described work rising maximum position, control described column oil cylinder to stop extending.
The present invention also provides a kind of planing mill upright post lift control system, and described milling machine comprises two column oil cylinders in parallel, and this control system comprises above-mentioned planing mill upright post apparatus for controlling of lifting, and described control device controls described two column oil cylinders simultaneously.
The present invention also provides a kind of milling machine, and this milling machine comprises above-mentioned planing mill upright post lift control system.
The present invention also provides a kind of planing mill upright post lift control method, this planing mill upright post, column oil cylinder and guide cylinder, guide cylinder described in described column hydraulic oil cylinder driving and described column relative sliding, to control milling machine lifting, described column oil cylinder comprises falling-threshold position, work rising maximum position, described control method comprises: at described milling machine from when entering transition operating mode, control described column oil cylinder to extend, and when described column oil cylinder arrives described work rising maximum position, control described column oil cylinder and stop extending.
The present invention is when described milling machine enters transition operating mode, control described column oil cylinder to extend, and when described column oil cylinder arrival work rising maximum position, control described column oil cylinder and stop extending, thus avoid owing to not reaching transition desired location and cause milling machine to damage.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for manual, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 shows the structural representation of milling machine;
Fig. 2 is the structured flowchart according to planing mill upright post apparatus for controlling of lifting of the present invention;
Fig. 3 is the structured flowchart of the planing mill upright post apparatus for controlling of lifting according to one embodiment of the present invention;
Fig. 4 (A) when to be milling machine carry out milling with maximum penetraction depth column oil cylinder be in the schematic diagram of falling-threshold position;
When Fig. 4 (B) is milling machine transition, column is in the schematic diagram of work rising maximum position;
Fig. 4 (C) is the schematic diagram that column is in rising extreme position;
Fig. 5 is the schematic diagram controlled according to the column oil cylinder hydraulic transmission of one embodiment of the present invention; And
Fig. 6 is the electrical schematic diagram of the column oil cylinder elevating control according to one embodiment of the present invention; And
Fig. 7 is the flow chart according to planing mill upright post lift control method of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 2 is the structured flowchart according to planing mill upright post apparatus for controlling of lifting of the present invention.Planing mill upright post apparatus for controlling of lifting as shown in Figure 2, described milling machine comprises column (not shown), column oil cylinder 30 and guide cylinder (not shown), described column oil cylinder 30 drives described guide cylinder and described column relative sliding, to control milling machine lifting, , described column oil cylinder 30 comprises falling-threshold position, work rising maximum position, described control device comprises: the first executing agency 10, for when described milling machine enters transition operating mode, control described column oil cylinder 30 to extend, and when described column oil cylinder arrives described work rising maximum position, control described column oil cylinder 30 to stop extending.
In addition, due to milling machine occur skid or when stepping on sky, prior art does not provide remedial measure and method, milling machine is probably owing to skidding or stepping on sky and tumble, once tumble, not only milling machine may be damaged, but also probably causes security incident.Therefore, in embodiments of the present invention, column oil cylinder 30 is extended from work rising maximum position to make it further comprises rising extreme position.And, control device also comprises as shown in Figure 3: the second executing agency 20, during for being less than preset value (as caused in skidded due to milling machine) at the in-oil cylinder pressure of described column, control described column oil cylinder 30 to continue to extend from described work rising maximum position, until the in-oil cylinder pressure of described column is more than or equal to described preset value, to avoid described milling machine to skid, or described column oil cylinder 30 is stretched to rising extreme position and cannot continues to extend.
In one embodiment of the invention, the first executing agency 10 can comprise: switching device, for when described milling machine enters transition operating mode, connects oil circuit and enters described column oil cylinder to make hydraulic oil; And checkout gear, be connected with described switching device, described work rising maximum position whether is arrived for detecting described column oil cylinder, and when described column oil cylinder arrives described work rising maximum position, thus control described switching device with make hydraulic oil stop enter described column oil cylinder.
According to one embodiment of the present invention, switching device can comprise: solenoid operated directional valve and the relay be connected with this solenoid operated directional valve, during for entering transition operating mode (such as switching to transition operating mode from milling operating mode) at described milling machine, solenoid operated directional valve described in Control obtains electric, makes hydraulic oil enter described column oil cylinder via one-way hydraulic lock; And checkout gear can be travel switch, the trip switch is connected with described relay, described work rising maximum position whether is arrived for detecting described column oil cylinder, and when described column oil cylinder arrives described work rising maximum position, travel switch disconnects, to make described relay and power supply disconnect, thus control described solenoid operated directional valve dead electricity, make hydraulic oil stop entering described column oil cylinder via described one-way hydraulic lock.Wherein said one-way hydraulic lock is connected with described solenoid operated directional valve.And, second executing agency 20 can comprise and is connected to reducing valve between described column oil cylinder and oil sources and one way valve, for when the in-oil cylinder pressure of described column is less than preset value, hydraulic oil by described reducing valve and one way valve to repairing in described column oil cylinder.
Below will be described in detail the present invention by specific embodiment, but should notice that the present invention is not limited to specific embodiment.
Milling machine drives column to shorten by column oil cylinder, to make frame decline, and then makes milling mechanism cut respective depth downwards to enter milling operating mode.The schematic diagram of falling-threshold position is in as Fig. 4 (A) shows column oil cylinder when milling machine carries out milling with maximum penetraction depth.When milling machine switches to transition operating mode from milling operating mode, column oil cylinder 30 drives column 4 to extend and sentences enter transition operating mode frame to be raised up to work rising maximum position.As when Fig. 4 (B) shows milling machine transition, column oil cylinder 30 is in the schematic diagram of work rising maximum position.In the present embodiment, guide cylinder 50 is installed one stroke switch 40, work rising maximum position whether is arrived to detect column oil cylinder 30, wherein can relative sliding between guide cylinder 50 and column 4, guide cylinder is driven to rise relative to column at column oil cylinder 30, when making travel switch 40 can't detect the wall of described column, column oil cylinder 30 arrives described work rising maximum position.And compared with prior art, column oil cylinder 30, after reaching work rising maximum position, also has elongation surplus, as the column oil cylinder rising extreme position schematic diagram that Fig. 4 (C) illustrates.
Operation below with reference to each parts of Fig. 5 and 6 pair milling machine is described in detail.
Fig. 5 is the schematic diagram controlled according to the column oil cylinder hydraulic transmission of one embodiment of the present invention, and Fig. 6 is the electrical schematic diagram of the column oil cylinder elevating control according to one embodiment of the present invention.The present embodiment is based on two column oil cylinders in parallel, but the present invention is not restricted to this.
As illustrated in Figures 5 and 6, the lifting action of column oil cylinder 30 is controlled by the first solenoid operated directional valve 11 and the second solenoid operated directional valve 12 respectively.As shown in Figure 6, when the first solenoid operated directional valve 11 obtains electric, column oil cylinder 30 extends, and frame rises, otherwise when the second solenoid operated directional valve 12 obtains electric, column oil cylinder 30 shortens, and frame declines.And first travel switch 41 and the second travel switch 42 be respectively used to detect left and right pillar oil cylinder and whether arrive work rising maximum position, the first relay 15 and the second relay 16 for control the first solenoid operated directional valve 11 electric and dead electricity.Detailed process is as described below.
In the present embodiment, in milling operating mode, control column rise or control milling machine when switching to transition operating mode, as shown in Figure 6, column up-down switch S 1 is got to lifting position, S1 is third gear runback mid level switch, and now switch contact 13,14 is connected, because now the first relay 15 and the second relay 16 are on-state, then its main contacts K01 and K02 closes, thus makes the first solenoid operated directional valve 11 obtain electric.With reference to figure 5, the first solenoid operated directional valve 11 electric after, hydraulic oil enters the rodless cavity of column oil cylinder 30 via the one-way hydraulic lock 60 without bar column oil circuit break-make controlling column oil cylinder, and then column oil cylinder 30 is risen.When column oil cylinder 30 rises to the rise first position shown in Fig. 4 (B), first travel switch 41 and/or the second travel switch 42 disconnect because can't detect the wall of column, thus control the first relay 15 and/or the second relay 16 dead electricity, its main contacts K01 and/or K02 is disconnected, and then control the first solenoid operated directional valve 11 dead electricity, make it be in meta, one-way hydraulic lock 60 is in self-locking state, and column oil cylinder 30 stops extending.Now, column up-down switch S 1 automatically resets to meta, and column maintains the position as shown in Fig. 4 (B).
When switching to milling operating mode by transition operating mode, as shown in Figure 6, column up-down switch S 1 is got to down position, now switch 23,24 is connected, and the second solenoid operated directional valve 12 obtains electric.With reference to figure 5, the second solenoid operated directional valve 12 electric after, in one-way hydraulic lock 60, the path of rodless cavity oil circuit side is opened.The automatic descending due to the effect of machine deadweight, fluid flows out from column oil cylinder.Can be controlled the length of oil cylinder compression by severity control instrument, this is known for those skilled in the art, therefore repeats no more.When after the degree of depth reaching needs, column up-down switch S 1 automatically resets to meta.Wherein, in decline process, when the first travel switch 41 and the second travel switch 42 detect the barrel of column, control the first relay 14 and the second relay 15 is connected.
When milling machine is in transition operating mode, when namely column oil cylinder is in the position shown in Fig. 4 (B), if wherein run into groove when a stud sides and occur stepping on sky or skidding, then the rodless cavity pressure in column oil cylinder 30 can reduce suddenly.As shown in Figure 5, when the rodless cavity pressure in column oil cylinder 30 reaches preset value, this preset value can be but be not limited to 0.45Mpa, reducing valve 21 can to step on repairing in the column oil cylinder of sky or skidding by the one way valve 22 that is connected with reducing valve 21 from trend, rise to make the relative column of guide cylinder, thus column is moved to groove direction, when column touches ground (i.e. groove surfaces), due to the active force on ground, rodless cavity pressure in column oil cylinder 30 is more than or equal to preset value, and now reducing valve 21 stops repairing in column oil cylinder.When milling machine sails out of groove, flowed in another column oil cylinder in parallel with it by the fluid in the column oil cylinder of repairing, make the two reach pressure balance, left and right pillar is for waiting high state.
It should be noted, although give two column oil cylinders in parallel in this embodiment, but column up-down of the present invention can control to be applied in single column oil cylinder or other other connections by those skilled in the art, and is realized the flowing of fluid by different modes.
The present invention also provides a kind of planing mill upright post lift control system, and described milling machine comprises two column oil cylinders in parallel, and this control system comprises: above-mentioned planing mill upright post apparatus for controlling of lifting, and described control device controls described two column oil cylinders simultaneously.
The present invention also provides a kind of milling machine, and this milling machine comprises above-mentioned planing mill upright post lift control system.
In addition, the present invention also provides a kind of planing mill upright post lift control method.As shown in Figure 7, when milling machine enters transition operating mode, control column oil cylinder in step 601 and extend.Judge whether column oil cylinder arrives work rising maximum position in step 602, and when column oil cylinder arrival work rising maximum position, control column oil cylinder in step 603 and stop extending; Otherwise, be back to step 601 and control the elongation of column oil cylinder.Judge whether the in-oil cylinder pressure of column is less than preset value in step 604, when the in-oil cylinder pressure of column is less than this preset value, control column oil cylinder in step 605 to continue to extend from work rising maximum position, until when the in-oil cylinder pressure of column is more than or equal to described preset value, controls column oil cylinder in step 607 and stop extending.
Work rising maximum position when the present invention accurately determines milling machine transition by travel switch needed for column, thus avoid and do not reach desired location and the damage causing milling machine; And the present invention also by having reserved the distance of work rising maximum position to rising extreme position in oil cylinder, for carrying out repairing when stepping on sky or skidding to column oil cylinder, because stepping on empty skidding, overthrow accident occurs to avoid milling machine.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.Such as, can by other control device realize to fluid flowing control, to realize technical scheme of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (13)
1. a planing mill upright post apparatus for controlling of lifting, described milling machine comprises column, column oil cylinder and guide cylinder, guide cylinder described in described column hydraulic oil cylinder driving and described column relative sliding, to control the lifting of described milling machine, it is characterized in that, described column oil cylinder comprises falling-threshold position, work rising maximum position, and described control device comprises:
First executing agency, for when described milling machine enters transition operating mode, controls described column oil cylinder and extends, and when described column oil cylinder arrives described work rising maximum position, controls described column oil cylinder and stop extending.
2. control device according to claim 1, is characterized in that, described column oil cylinder also comprises rising extreme position, and described control device also comprises:
Second executing agency, for skidding when described milling machine, when the in-oil cylinder pressure of described column is less than preset value, control described column oil cylinder to continue to extend from described work rising maximum position, until the in-oil cylinder pressure of described column is more than or equal to described preset value, skid to avoid described milling machine.
3. control device according to claim 1, is characterized in that, described first executing agency comprises:
Switching device, for when described milling machine enters transition operating mode, connects oil circuit and enters described column oil cylinder to make hydraulic oil; And
Checkout gear, be connected with described switching device, whether arrive described work rising maximum position for detecting described column oil cylinder, and when described column oil cylinder arrives described work rising maximum position, control described switching device and stop entering described column oil cylinder to make hydraulic oil.
4. control device according to claim 3, is characterized in that,
The relay that described switching device comprises solenoid operated directional valve and is connected with this solenoid operated directional valve, when described milling machine enters transition operating mode, described in described Control, solenoid operated directional valve obtains electric, makes hydraulic oil enter described column oil cylinder via one-way hydraulic lock;
Described checkout gear is travel switch, the trip switch is connected with described relay, described work rising maximum position whether is arrived for detecting described column oil cylinder, and when described column oil cylinder arrives described work rising maximum position, disconnect the connection of described relay and power supply, thus control described solenoid operated directional valve dead electricity, make hydraulic oil stop entering described column oil cylinder via described one-way hydraulic lock
Wherein said one-way hydraulic lock is connected with described solenoid operated directional valve.
5. control device according to claim 4, it is characterized in that, described control device also comprises column up-down switch, is connected with described relay, when described column up-down switch is in lifting position, connect the connection between described relay and power supply.
6. control device according to claim 4, it is characterized in that, described in described column hydraulic oil cylinder driving, guide cylinder rises relative to described column, and when making described travel switch can't detect the wall of described column, described column oil cylinder arrives described work rising maximum position.
7. control device according to claim 2, it is characterized in that, described second executing agency comprises and is connected to reducing valve between described column oil cylinder and oil sources and one way valve, when the in-oil cylinder pressure of described column is less than described preset value, hydraulic oil by described reducing valve and one way valve to repairing in described column oil cylinder.
8. a planing mill upright post lift control system, is characterized in that, described milling machine comprises two column oil cylinders in parallel, and this control system comprises
Planing mill upright post apparatus for controlling of lifting any one of 1-7 described in claim, described control device controls described two column oil cylinders simultaneously.
9. a milling machine, is characterized in that, this milling machine comprises planing mill upright post lift control system according to claim 8.
10. a planing mill upright post lift control method, this milling machine comprises column, column oil cylinder and guide cylinder, guide cylinder described in described column hydraulic oil cylinder driving and described column relative sliding, to control milling machine lifting, it is characterized in that, described column oil cylinder comprises falling-threshold position, work rising maximum position, and described control method comprises:
When described milling machine enters transition operating mode, control described column oil cylinder and extend, and when described column oil cylinder arrives described work rising maximum position, control described column oil cylinder and stop extending.
11. control methods according to claim 10, described column oil cylinder also comprises rising extreme position, and described control method also comprises:
When described milling machine skids, when the in-oil cylinder pressure of described column is less than preset value, control described column oil cylinder to continue to extend from described work rising maximum position, until the in-oil cylinder pressure of described column is more than or equal to described preset value, skid to avoid described milling machine.
12. control methods according to claim 10, it is characterized in that, when described milling machine enters transition operating mode, obtain electric by Control solenoid operated directional valve, make hydraulic oil enter described column oil cylinder via one-way hydraulic lock and extend to control described column oil cylinder; And
When described column oil cylinder arrival work rising maximum position, solenoid operated directional valve dead electricity described in described Control, makes hydraulic oil stop entering described column oil cylinder via described one-way hydraulic lock and stops extending to control described column oil cylinder.
13. control methods according to claim 11, is characterized in that, when the in-oil cylinder pressure of described column is less than described preset value, utilize reducing valve by the one way valve that is connected with this reducing valve to repairing in described column oil cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189144.6A CN103966940B (en) | 2014-05-07 | 2014-05-07 | A kind of milling machine and column up-down control device, system and method |
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| CN201410189144.6A CN103966940B (en) | 2014-05-07 | 2014-05-07 | A kind of milling machine and column up-down control device, system and method |
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| CN103966940A CN103966940A (en) | 2014-08-06 |
| CN103966940B true CN103966940B (en) | 2015-12-30 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027299Y (en) * | 2007-02-15 | 2008-02-27 | 广西柳工机械股份有限公司 | Synchronous elevator apparatus for planing mill upright post |
| CN201809710U (en) * | 2010-09-16 | 2011-04-27 | 江苏华通动力重工有限公司 | Lifting leg and lifting cylinder connection structure of pavement milling machine |
| CN103362059A (en) * | 2012-03-28 | 2013-10-23 | 维特根有限公司 | An automotive milling machine, a use of a lifting column of the milling machine, as well as a method for increasing the operating efficiency of the milling machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5156963B2 (en) * | 2006-12-22 | 2013-03-06 | ヴィルトゲン ゲゼルシャフト ミット ベシュレンクテル ハフツング | Road cutting machine and method of positioning a machine frame of a road cutting machine parallel to the ground |
| DE102007033808A1 (en) * | 2007-07-05 | 2009-01-08 | Wirtgen Gmbh | Self-propelled road milling machine, in particular large milling machine |
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- 2014-05-07 CN CN201410189144.6A patent/CN103966940B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027299Y (en) * | 2007-02-15 | 2008-02-27 | 广西柳工机械股份有限公司 | Synchronous elevator apparatus for planing mill upright post |
| CN201809710U (en) * | 2010-09-16 | 2011-04-27 | 江苏华通动力重工有限公司 | Lifting leg and lifting cylinder connection structure of pavement milling machine |
| CN103362059A (en) * | 2012-03-28 | 2013-10-23 | 维特根有限公司 | An automotive milling machine, a use of a lifting column of the milling machine, as well as a method for increasing the operating efficiency of the milling machine |
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