CN104164830A - Walking driving system and method of cold milling machine for pavement - Google Patents
Walking driving system and method of cold milling machine for pavement Download PDFInfo
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- CN104164830A CN104164830A CN201410407000.3A CN201410407000A CN104164830A CN 104164830 A CN104164830 A CN 104164830A CN 201410407000 A CN201410407000 A CN 201410407000A CN 104164830 A CN104164830 A CN 104164830A
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Abstract
The invention relates to a walking driving system of a cold milling machine for a pavement. The system comprises a walking pump (1), wherein an oil outlet of the walking pump (1) is divided into two paths, one path is communicated to a front wheel motor I (5) and a front wheel motor II (6), the other path is communicated to a rear wheel motor I (7) and a rear wheel motor II (8) through a two-way flow diverging and collecting valve (4), so as to realize the parallel connection of the front wheel motor I (5), the front wheel motor II (6), the rear wheel motor I (7) and the rear wheel motor II (8), an oil outlet of an oil replenishing pump of the walking pump (1) is divided into two paths, one path is communicated to a pressure oil opening of a shift valve (3), the other path is communicated to a control oil opening of the two-way flow diverging and collecting valve (4), and an oil outlet of the shift valve (3) is communicated to control oil openings of the front wheel motor I (5), the front wheel motor II (6), the rear wheel motor I (7) and the rear wheel motor II (8). The walking driving system of the cold milling machine for the pavement, provided by the invention, is simple in structure, and convenient to operate.
Description
Technical field
The present invention relates to a kind of fluid power system and method for four-wheel drive vehicle walking, especially relate to a kind of walking fluid power system and method thereof of the Cold Miller that adopts four-wheel drive, belong to milling machine technical field.
Background technology
Milling machine can be repaired damaged flexible pavement and cement pavement according to construction requirement, is generally used for the routine servicing of high-grade highway early disease.In the milling machine course of work, load is larger, and speed is lower, for ensureing work quality, need to ensure that complete machine low-speed stable travels; And need flexibly transition rapidly after construction.
Milling machine travel driving system generally adopts in the industry following two schemes:
One is mechanical transmission scheme: driving-chain is generally motor---clutch---gearbox---mechanical type propons.Mechanical transmission scheme driving-chain complexity, fault rate is higher; And mechanical type is handled comparatively effort, and tractor driver's labour intensity is larger.
It two is all-hydraulic omnidistance stepless time adjustment walking drive scheme: this scheme is generally used for the milling machine of four-wheel drive, and this drive scheme is generally made up of traveling pump, four roads point combiner valve, four running motors, controller, walking handle and Remote control valves.Though it is electrodeless adjustable continuously that this walking drive scheme can be realized travel speed, it has following shortcoming:
1, automatically controlled logic, hydraulic system are too complicated, and machine failure point increases, and causes whole aircraft reliability greatly to reduce;
2, there are work, two kinds of operating modes of transition in milling machine, and operating rate is in 2Km/h left and right, and transition speed generally, more than 8Km/h, is not used in the middle a large amount of speed regulating section real work of stepless time adjustment system;
3,, in work, four roads point combiner valve forces to make four running motor flows identical, in the time being subject to powerful external impacts, and complete machine buffering in stays, so complete machine, by bearing huge mechanical shock and hydraulic shock, seriously reduces part life;
4, stepless time adjustment and milling machine real work situation are not inconsistent, and tractor driver operates inconvenience.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of Cold Miller travel driving system and driving method thereof are provided, it can avoid the operation inconvenience of mechanical transmission scheme, and simultaneously automatically controlled logic, hydraulic system are comparatively simple; In the situation that guarantee is easy to operate, simplification system, reduces operation troubles rate.
The object of the present invention is achieved like this: a kind of Cold Miller travel driving system, described system includes traveling pump, the oil-out of described traveling pump is divided into two-way, one tunnel is communicated to front wheel motor one and front wheel motor two, another road after a two-way point combiner valve is communicated to wheel motor one and after wheel motor two, thereby wheel motor one before realizing, front wheel motor two, the connection parallel with one another of rear wheel motor one and rear wheel motor two, the slippage pump oil-out of described traveling pump is divided into two-way, one tunnel is communicated to the pressure hydraulic fluid port of shift valve, another road is communicated to the control port of two-way point combiner valve, the oil-out of described shift valve is communicated to front wheel motor one, front wheel motor two, the control port of rear wheel motor one and rear wheel motor two.
A kind of Cold Miller travel driving system of the present invention, the reversal valve that described two-way point combiner valve includes current divider and is attached thereto.
A kind of Cold Miller travel driving system of the present invention, is all provided with speed probe on described rear wheel motor one and rear wheel motor two, and described speed probe is connected to controller, and described controller is connected with a two-way point combiner valve.
A kind of Cold Miller walking of the present invention driving method,
In the time constructing, shift valve must not be electric, and now front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two are all in maximum pump discharge; Reversal valve in two-way point combiner valve obtains electric, and current divider is opened, and rear wheel motor one is forced identical with the second-rate amount of rear wheel motor; Now by the adjusting pump delivery of walking, can be according to the electrodeless adjusting operating speed of construction operating mode; And after under this kind of operating mode, two-way divides combiner valve to force, wheel motor one is identical with the flow of rear wheel motor two;
In the time of transition transport starting, shift valve must not be electric, and front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two are all in maximum pump discharge; Two-way divides the reversal valve in combiner valve must not electricity, and current divider cuts out, and the flow of front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two freely distributes; Now by the adjusting pump delivery of walking, can be according to the electrodeless adjusting starting speed of road conditions; After stable travelling, shift valve obtains electric, and front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two switch to minimum injection rate, now by the adjusting pump delivery of walking, and can be according to the electrodeless adjusting travel speed of road conditions.
A kind of Cold Miller walking of the present invention driving method, when in transition transportation, the rotating speed of wheel motor one and rear wheel motor two after speed probe detects in real time, and tach signal is sent to controller, compare with controller inner motor speed setting value, if exceed speed setting value, controller output electrical signals to two-way divides combiner valve, divides combiner valve positive opening by two-way.
Compared with prior art, the invention has the beneficial effects as follows:
1, adopt two position variable axial plunger motors, the half left and right that rear wheel motor one and rear wheel motor two minimum injection rates are maximum pump discharge, front wheel motor one and front wheel motor two minimum injection rates approach zero delivery;
2,, while work, front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two, all in large discharge capacity, ensure the powerful driving force of complete machine; When transition, front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two are all in small displacement, and in such cases, trailing wheel provides driving force, front-wheel, in freewheel state (front wheel motor one and front wheel motor two minimum injection rates approach zero delivery), ensures the quick transition of complete machine;
3, employing two-way divides the flow of combiner valve control two rear wheel motors, and two front wheel motors are directly connected with working barrel;
4, while work, two-way divides combiner valve to open, and after forcing, wheel motor one is identical with the second-rate amount of rear wheel motor, avoids motor idle running, and in the construction of guarantee complete machine, low-speed stable travels; And front wheel motor one and front wheel motor two adopt the swing axle structure of independent suspension, ensure the tack that two front-wheels are good, two front wheel motors are directly connected with working barrel simultaneously, and flow freely distributes, run into powerful external impacts in construction time, front-wheel can turn to alleviate impact;
5, when transition is walked, a two-way point combiner valve is closed, and front wheel motor one and front wheel motor two are in freewheel state, and rear wheel motor one and the second-rate amount of rear wheel motor are freely distributed according to walking situation; Now speed probe detects rear wheel motor one and rear wheel motor two rotating speeds, and tach signal is sent to controller, compare with controller inner motor speed setting value, if exceed speed setting value, controller output electrical signals to two-way divides combiner valve, divide combiner valve positive opening by two-way, avoid rear wheels slip; Ensure machine's drive power.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of Cold Miller travel driving system of the present invention.
Fig. 2 is the structural representation of the two-way point combiner valve of a kind of Cold Miller travel driving system of the present invention.
Wherein:
Traveling pump 1, controller 2, shift valve 3, two-way divide combiner valve 4, front wheel motor 1, front wheel motor 26, rear wheel motor 1, rear wheel motor 28, speed probe 9, current divider 10, reversal valve 11.
Detailed description of the invention
Referring to Fig. 1 and Fig. 2, a kind of Cold Miller travel driving system the present invention relates to, described system includes traveling pump 1, the oil-out of described traveling pump 1 is divided into two-way, one tunnel is communicated to front wheel motor 1 and front wheel motor 26, another road after two-way point combiner valve 4 is communicated to wheel motor 1 and after wheel motor 28, thereby realize the connection parallel with one another of front wheel motor 1, front wheel motor 26, rear wheel motor 1 and rear wheel motor 28; Described front wheel motor 1, front wheel motor 26, rear wheel motor 1 and rear wheel motor 28 are variable axial plunger motor, and described front wheel motor 1, front wheel motor 26, rear wheel motor 1 are identical with the maximum pump discharge of rear wheel motor 28, the minimum injection rate of front wheel motor 1 and front wheel motor 26 is close to zero, the half that the minimum injection rate of rear wheel motor 1 and rear wheel motor 28 is maximum pump discharge;
Described two-way divides combiner valve 4 for a kind of cartridge valve, the reversal valve 11(that includes current divider 10 and be attached thereto concretely, wherein reversal valve 11 often leaves solenoid operated directional valve for a kind of 2/2-way, the oil inlet P 1 of reversal valve 11 communicates with the epicoele of current divider 10, the oil-out T1 of reversal valve 11 communicates with the cavity of resorption of current divider 10), the slippage pump oil-out of described traveling pump 1 is divided into two-way, one tunnel is communicated to the pressure hydraulic fluid port P1 of shift valve 3, another road is communicated to the control port X of control port X(two-way point combiner valve 4 of two-way point combiner valve 4 and the oil inlet P 1 of reversal valve 11, the epicoele of current divider 10 communicates), the oil-out of described shift valve 3 is communicated to front wheel motor 1, front wheel motor 26, the control port of rear wheel motor 1 and rear wheel motor 28,
On described rear wheel motor 1 and rear wheel motor 28, speed probe 9 is all installed, described speed probe 9 is connected to controller 2, described controller 2 is connected with two-way point combiner valve 4, and (described controller 2 is connected with the electromagnetic coil Y1 of two-way point combiner valve 4 interior reversal valves 11, under transition transport operating mode, in the time that speed probe 9 detects trailing wheel hypervelocity, the electromagnetic coil Y1 of electric current to reversal valve 11 controlled in controller 2 outputs, and reversal valve 11 is commutated, and current divider 10 is opened).
A kind of Cold Miller walking of the present invention driving method;
In the time constructing, shift valve 3 must not be electric, and now front wheel motor 1, front wheel motor 26, rear wheel motor 1 and rear wheel motor 28 are all in maximum pump discharge; It is electric that two-way divides the reversal valve 11 in combiner valve 4 to obtain, and current divider 10 is opened, and rear wheel motor 1 is identical with rear wheel motor 28 forces traffic; Now pass through to regulate the discharge capacity of traveling pump 1, can be according to the electrodeless adjusting operating speed of construction operating mode; And after under this kind of operating mode, two-way divides combiner valve semi-finals system, wheel motor 1 is identical with the flow of rear wheel motor 28, and front wheel motor 1 and front wheel motor 26 adopt the swing axle structure of independent suspension, ensure front wheel motor 1 and the good tack of front wheel motor 26, thereby can ensure that in construction, wheel is non-slip; Simultaneously, wheel motor 1 is directly connected with working barrel 1 with front wheel motor 26, and flow freely distributes, and run into powerful external impacts in construction time, front wheel motor 1 and front wheel motor 26 can turn to alleviate impact.
In the time of transition transport starting, shift valve 3 must not be electric, and front wheel motor 1, front wheel motor 26, rear wheel motor 1 and rear wheel motor 28 are all in maximum pump discharge; Two-way divides the reversal valve 11 in combiner valve 4 must not electricity, and current divider 10 cuts out, and the flow of front wheel motor 1, front wheel motor 26, rear wheel motor 1 and rear wheel motor 28 freely distributes; Now pass through to regulate the discharge capacity of traveling pump 1, can be according to the electrodeless adjusting starting speed of road conditions; After stable travelling, shift valve 3 obtains electric, and front wheel motor 1, front wheel motor 26, rear wheel motor 1 and rear wheel motor 28 switch to minimum injection rate, now by regulating the discharge capacity of traveling pump 1, and can be according to the electrodeless adjusting travel speed of road conditions.
When in transition transportation, the rotating speed of wheel motor 1 and rear wheel motor 28 after speed probe 9 detects in real time, and tach signal is sent to controller 2, compare with controller 2 inner motor speed setting values, if exceed speed setting value, controller output electrical signals to two-way divides combiner valve 4, and a two-way point combiner valve semi-finals system is opened, avoid rear wheels slip, machine's drive power while ensureing transition.
In addition: it should be noted that above-mentioned detailed description of the invention is only a prioritization scheme of this patent, any change or improvement that those skilled in the art does according to above-mentioned design, all within the protection domain of this patent.
Claims (5)
1. a Cold Miller travel driving system, it is characterized in that: described system includes traveling pump (1), the oil-out of described traveling pump (1) is divided into two-way, one tunnel is communicated to front wheel motor one (5) and front wheel motor two (6), another road is wheel motor one (7) and rear wheel motor two (8) after two-way point combiner valve (4) is communicated to, thereby wheel motor one (5) before realizing, front wheel motor two (6), the connection parallel with one another of rear wheel motor one (7) and rear wheel motor two (8), the slippage pump oil-out of described traveling pump (1) is divided into two-way, one tunnel is communicated to the pressure hydraulic fluid port of shift valve (3), another road is communicated to the control port of two-way point combiner valve (4), the oil-out of described shift valve (3) is communicated to front wheel motor one (5), front wheel motor two (6), the control port of rear wheel motor one (7) and rear wheel motor two (8).
2. a kind of Cold Miller travel driving system as claimed in claim 1, is characterized in that: the reversal valve (11) that described two-way point combiner valve (4) includes current divider (10) and is attached thereto.
3. a kind of Cold Miller travel driving system as claimed in claim 1 or 2, it is characterized in that: on described rear wheel motor one (7) and rear wheel motor two (8), speed probe (9) is all installed, described speed probe (9) is connected to controller (2), and described controller (2) is connected with two-way point combiner valve (4).
4. a Cold Miller walking driving method, it is characterized in that: described method includes a kind of Cold Miller travel driving system, described system includes traveling pump (1), the oil-out of described traveling pump (1) is divided into two-way, one tunnel is communicated to front wheel motor one (5) and front wheel motor two (6), another road is wheel motor one (7) and rear wheel motor two (8) after two-way point combiner valve (4) is communicated to, thereby wheel motor one (5) before realizing, front wheel motor two (6), the connection parallel with one another of rear wheel motor one (7) and rear wheel motor two (8), the slippage pump oil-out of described traveling pump (1) is divided into two-way, one tunnel is communicated to the pressure hydraulic fluid port of shift valve (3), another road is communicated to the control port of two-way point combiner valve (4), the oil-out of described shift valve (3) is communicated to front wheel motor one (5), front wheel motor two (6), the control port of rear wheel motor one (7) and rear wheel motor two (8),
In the time constructing, shift valve (3) must not be electric, and now front wheel motor one (5), front wheel motor two (6), rear wheel motor one (7) and rear wheel motor two (8) are all in maximum pump discharge; It is electric that two-way divides the reversal valve (11) in combiner valve (4) to obtain, and current divider (10) is opened, and rear wheel motor one (7) is identical with rear wheel motor two (8) forces traffic; Now pass through to regulate the discharge capacity of traveling pump (1), can be according to the electrodeless adjusting operating speed of construction operating mode; And after under this kind of operating mode, two-way divides combiner valve (4) to force, wheel motor one (7) is identical with the flow of rear wheel motor two (8);
In the time of transition transport starting, shift valve (3) must not be electric, and front wheel motor one (5), front wheel motor two (6), rear wheel motor one (7) and rear wheel motor two (8) are all in maximum pump discharge; Two-way divides the reversal valve (11) in combiner valve (4) must not electricity, and current divider (10) cuts out, and the flow of front wheel motor one (5), front wheel motor two (6), rear wheel motor one (7) and rear wheel motor two (8) freely distributes; Now pass through to regulate the discharge capacity of traveling pump (1), can be according to the electrodeless adjusting starting speed of road conditions; After stable travelling, shift valve (3) obtains electric, front wheel motor one (5), front wheel motor two (6), rear wheel motor one (7) and rear wheel motor two (8) switch to minimum injection rate, now by regulating the discharge capacity of traveling pump (1), and can be according to the electrodeless adjusting travel speed of road conditions.
5. a kind of Cold Miller walking driving method as claimed in claim 4, it is characterized in that: on described rear wheel motor one (7) and rear wheel motor two (8), speed probe (9) is all installed, described speed probe (9) is connected to controller (2), described controller (2) is connected with two-way point combiner valve (4), when in transition transportation, the rotating speed of wheel motor one (7) and rear wheel motor two (8) after speed probe (9) detects in real time, and tach signal is sent to controller (2), compare with controller (2) inner motor speed setting value, if exceed speed setting value, controller output electrical signals to two-way divides combiner valve (4), divide combiner valve (4) positive opening by two-way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410407000.3A CN104164830B (en) | 2014-08-19 | 2014-08-19 | Walking driving system and method of cold milling machine for pavement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410407000.3A CN104164830B (en) | 2014-08-19 | 2014-08-19 | Walking driving system and method of cold milling machine for pavement |
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| Publication Number | Publication Date |
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| CN104164830A true CN104164830A (en) | 2014-11-26 |
| CN104164830B CN104164830B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410407000.3A Active CN104164830B (en) | 2014-08-19 | 2014-08-19 | Walking driving system and method of cold milling machine for pavement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149537A (en) * | 2016-08-22 | 2016-11-23 | 徐州徐工筑路机械有限公司 | A kind of milling mechanism hydraulic traveling system antiskid system |
| CN107795533A (en) * | 2017-10-26 | 2018-03-13 | 湖北三江航天万山特种车辆有限公司 | A kind of more gear drive hydraulic system principles of heavy flat transport vehicle |
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| CN2753785Y (en) * | 2004-10-11 | 2006-01-25 | 天津市道路桥梁管理处 | Road surface milling-planing machine and its hydraulic running mechanism and hych-aulic operating mechanism |
| CN1789561A (en) * | 2005-12-26 | 2006-06-21 | 三一重工股份有限公司 | Control method and apparatus for omnirange stepless speed-adjusting travel drive of milling machine |
| US20090035064A1 (en) * | 2002-01-30 | 2009-02-05 | Bernd Holl | Road milling machine with optimized operation |
| CN103213494A (en) * | 2013-04-26 | 2013-07-24 | 江苏四明工程机械有限公司 | Self-walking mechanical double-speed walking electro-hydraulic control system |
| CN103741576A (en) * | 2013-12-30 | 2014-04-23 | 徐州徐工筑路机械有限公司 | Small-sized pavement milling machine traveling control system |
| CN204080604U (en) * | 2014-08-19 | 2015-01-07 | 柳工无锡路面机械有限公司 | A kind of Cold Miller travel driving system |
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2014
- 2014-08-19 CN CN201410407000.3A patent/CN104164830B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090035064A1 (en) * | 2002-01-30 | 2009-02-05 | Bernd Holl | Road milling machine with optimized operation |
| CN2753785Y (en) * | 2004-10-11 | 2006-01-25 | 天津市道路桥梁管理处 | Road surface milling-planing machine and its hydraulic running mechanism and hych-aulic operating mechanism |
| CN1789561A (en) * | 2005-12-26 | 2006-06-21 | 三一重工股份有限公司 | Control method and apparatus for omnirange stepless speed-adjusting travel drive of milling machine |
| CN103213494A (en) * | 2013-04-26 | 2013-07-24 | 江苏四明工程机械有限公司 | Self-walking mechanical double-speed walking electro-hydraulic control system |
| CN103741576A (en) * | 2013-12-30 | 2014-04-23 | 徐州徐工筑路机械有限公司 | Small-sized pavement milling machine traveling control system |
| CN204080604U (en) * | 2014-08-19 | 2015-01-07 | 柳工无锡路面机械有限公司 | A kind of Cold Miller travel driving system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149537A (en) * | 2016-08-22 | 2016-11-23 | 徐州徐工筑路机械有限公司 | A kind of milling mechanism hydraulic traveling system antiskid system |
| CN107795533A (en) * | 2017-10-26 | 2018-03-13 | 湖北三江航天万山特种车辆有限公司 | A kind of more gear drive hydraulic system principles of heavy flat transport vehicle |
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| CN104164830B (en) | 2017-01-18 |
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