CN104164830B - 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 PDF

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Publication number
CN104164830B
CN104164830B CN201410407000.3A CN201410407000A CN104164830B CN 104164830 B CN104164830 B CN 104164830B CN 201410407000 A CN201410407000 A CN 201410407000A CN 104164830 B CN104164830 B CN 104164830B
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wheel motor
valve
way
communicated
pump
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CN104164830A (en
Inventor
王振
邹广平
宋鹏飞
张恒郡
杨永雄
贾康乐
周海林
张明年
付廷辉
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LIUGONG WUXI ROAD SURFACE MACHINERY CO Ltd
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LIUGONG WUXI ROAD SURFACE MACHINERY CO Ltd
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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

A kind of Cold Miller travel driving system and its driving method
Technical field
The present invention relates to a kind of fluid power system of four-wheel drive vehicle walking and method, especially relate to a kind of employing The walking fluid power system of the Cold Miller of four-wheel drive and its method, belong to milling machine technical field.
Background technology
Milling machine can be repaired to damaged bituminous paving and cement pavement according to construction requirement, is generally used for high The routine servicing of level highway early disease.In milling machine work process, load is larger, and speed is relatively low, for ensureing work quality, needs Ensure that whole machine low-speed stable travels;And after constructing, need flexible rapidly transition.
Milling machine travel driving system commonly used following two scheme in the industry:
One is mechanical transmission scheme: driving-chain is generally engine clutch change speed gear box mechanical type Propons.Mechanical transmission scheme driving-chain is complicated, and fault rate is higher;And mechanical manipulation is more laborious, machine handss labor intensity is relatively Greatly.
Its two be all-hydraulic whole process stepless time adjustment hoofing part scheme: the program is generally used for the milling machine of four-wheel drive, This drive scheme typically divides combiner valve, four running motor, controller, walk handle and Remote control valves by traveling pump, four tunnels Composition.Though this hoofing part scheme enables, and travel speed is continuously electrodeless adjustable, it has several disadvantages in that
1st, automatically controlled logic, hydraulic system are excessively complicated, and machine failure point increases, and leads to whole aircraft reliability to substantially reduce;
2nd, there are work, two kinds of operating modes of transition in milling machine, and, in 2km/h, transition speed is typically in 8km/ for operating rate More than h, does not use in substantial amounts of speed regulating section real work in the middle of stepless time adjustment system;
3rd, in working, four road point combiner valve force to make four running motor flows identical, by powerful external impacts When, whole machine buffering in stays, so whole machine will bear huge mechanical shock and hydraulic shock, serious reduces the parts longevity Life;
4th, stepless time adjustment and milling machine real work situation are not inconsistent, the operation inconvenience of machine handss.
Content of the invention
It is an object of the invention to overcoming above-mentioned deficiency, provide a kind of Cold Miller travel driving system and its driving Method, it is avoided that the operation inconvenience of mechanical transmission scheme, and automatically controlled logic, hydraulic system are relatively simple simultaneously;Ensureing behaviour In the case of making easily, simplified system, reduces operation troubles rate.
The object of the present invention is achieved like this: a kind of Cold Miller travel driving system, and described system includes Traveling pump, the oil-out of described traveling pump is divided into two-way, and a road is communicated to front wheel motor one and front wheel motor two, another road two Road point combiner valve is communicated to rear wheel motor one and rear wheel motor two, thus realizing front wheel motor one, front wheel motor two, rear wheel motor One and being connected in parallel with each other of rear wheel motor two, the slippage pump oil-out of described traveling pump is divided into two-way, and a road is communicated to gearshift The pressure oil port of valve, another road is communicated to the control port of two-way point combiner valve, and the oil-out of described shift valve is communicated to front-wheel Motor one, the control port of front wheel motor two, rear wheel motor one and rear wheel motor two.
A kind of present invention Cold Miller travel driving system, described two-way point combiner valve include diverter and with Be connected reversal valve.
A kind of present invention Cold Miller travel driving system, described rear wheel motor one and rear wheel motor two are respectively mounted There is speed probe, described speed probe connects to controller, described controller is connected with two-way point combiner valve.
A kind of present invention Cold Miller hoofing part method,
When being constructed, shift valve must not be electric, now front wheel motor one, front wheel motor two, rear wheel motor one and trailing wheel Motor two is in maximum pump discharge;Reversal valve in two-way point combiner valve obtains electric, diverter unlatching, rear wheel motor one and trailing wheel horse Reach two forces traffic identical;Now by the discharge capacity adjusting traveling pump, can be according to construction operating mode electrodeless regulation operating speed;And this Plant wheel motor one after two-way under operating mode divides combiner valve to force identical with the flow of rear wheel motor two;
When transition transport starting, shift valve must not be electric, front wheel motor one, front wheel motor two, rear wheel motor one and trailing wheel Motor two is in maximum pump discharge;Two-way divide reversal valve in combiner valve must not electricity, diverter cuts out, front wheel motor one, front-wheel The flow of motor two, rear wheel motor one and rear wheel motor two freely distributes;Now by the discharge capacity adjusting traveling pump, can be according to road Condition electrodeless regulation starting speed;Stable travel after, shift valve obtain electric, front wheel motor one, front wheel motor two, rear wheel motor one and after Wheel motor two switches to minimum injection rate, now by the discharge capacity adjusting traveling pump, can be according to road conditions electrodeless regulation travel speed.
A kind of present invention Cold Miller hoofing part method, when, in transition transportation, speed probe is examined in real time The rotating speed of wheel motor one and rear wheel motor two after survey, and tach signal is sent to controller, set with controller inner motor rotating speed Definite value is compared, if exceeding speed setting value, the controller output signal of telecommunication divides combiner valve to two-way, and two-way is divided combiner valve strong System is opened.
Compared with prior art, the invention has the beneficial effects as follows:
1st, two position variable axial plunger motors, rear wheel motor one and rear wheel motor two minimum injection rate is adopted to be maximum pump discharge About half, front wheel motor one and front wheel motor two minimum injection rate are close to zero delivery;
When the 2nd, working, front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two are in huge discharge, protect Demonstrate,prove the powerful driving force of whole machine;During transition, front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two are in Small displacement, in such cases, trailing wheel provides driving force, and front-wheel is in freewheel state, and (front wheel motor one and front wheel motor two are Small displacement is close to zero delivery) it is ensured that the quick transition of whole machine;
3rd, divide combiner valve to control the flow of wheel motor after two using two-way, and before two, wheel motor is directly connected with working barrel;
When the 4th, working, two-way divides combiner valve to open, and after pressure, wheel motor one is identical with the second-rate amount of rear wheel motor, it is to avoid motor Dally it is ensured that low-speed stable travels in the construction of whole machine;And front wheel motor one and front wheel motor two adopt the swing axle of independent suspension It is ensured that the good tack of two front-wheels, wheel motor is directly connected structure with working barrel before two simultaneously, and flow freely distributes, and is applying When running into powerful external impacts in work, front-wheel can turn to alleviate impact;
5th, during transition walking, two-way divides combiner valve to close, and front wheel motor one and front wheel motor two are in freewheel state, after Wheel motor one and the second-rate amount of rear wheel motor are freely distributed according to walking situation;After now speed probe detection wheel motor one and after Wheel motor two rotating speed, and tach signal is sent to controller, it is compared with controller inner motor speed setting value, if exceeding Speed setting value, the controller output signal of telecommunication divides combiner valve to two-way, two-way is divided combiner valve positive opening, it is to avoid trailing wheel is beaten Sliding;Ensure machine's drive power.
Brief description
Fig. 1 is a kind of structural representation of present invention Cold Miller travel driving system.
Fig. 2 is that a kind of two-way of present invention Cold Miller travel driving system divides the structural representation of combiner valve.
Wherein:
Traveling pump 1, controller 2, shift valve 3, two-way divide combiner valve 4, front wheel motor 1, front wheel motor 26, trailing wheel horse Reach one 7, rear wheel motor 28, speed probe 9, diverter 10, reversal valve 11.
Specific embodiment
Referring to Fig. 1 and Fig. 2, a kind of Cold Miller travel driving system according to the present invention, described system includes Traveling pump 1, the oil-out of described traveling pump 1 is divided into two-way, and a road is communicated to front wheel motor 1 and front wheel motor 26, Ling Yilu After being communicated to through two-way point combiner valve 4 wheel motor 1 and after wheel motor 28, thus wheel motor 1, front wheel motor two before realizing 6th, being connected in parallel with each other of 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 be variable axial plunger motor, and described front wheel motor 1, front wheel motor 26, rear wheel motor one 7 is identical with the maximum pump discharge of rear wheel motor 28, and the minimum injection rate of front wheel motor 1 and front wheel motor 26 is close to zero, trailing wheel The minimum injection rate of motor 1 and rear wheel motor 28 is the half of maximum pump discharge;
It is a kind of inserted valve that described two-way divides combiner valve 4, includes diverter 10 and the reversal valve 11(tool being attached thereto The saying of body, wherein reversal valve 11 are a kind of normally opened solenoid directional control valve of 2/2-way, the oil-in p1 of reversal valve 11 and diverter 10 Epicoele communicate, the oil-out t1 of reversal valve 11 is communicated with the cavity of resorption of diverter 10), the slippage pump oil-out of described traveling pump 1 It is divided into two-way, a road is communicated to pressure oil port p1 of shift valve 3, another road is communicated to the control port x of two-way point combiner valve 4 (the control port x of two-way point combiner valve 4 is communicated with the epicoele of the oil-in p1 of reversal valve 11, diverter 10), described shift valve 3 Oil-out be communicated to front wheel motor 1, the control port of front wheel motor 26, rear wheel motor 1 and rear wheel motor 28;
Speed probe 9 is mounted on described rear wheel motor 1 and rear wheel motor 28, described speed probe 9 connects To controller 2, described controller 2 is connected with two-way point combiner valve 4 (described controller 2 and reversal valve in two-way point combiner valve 4 11 solenoid y1 is connected, and under transition comfortable property, when speed probe 9 detects trailing wheel hypervelocity, controller 2 is defeated Go out control electric current to the solenoid y1 of reversal valve 11, so that reversal valve 11 is commutated, diverter 10 is opened).
A kind of present invention Cold Miller hoofing part method;
When being constructed, shift valve 3 must not be electric, now front wheel motor 1, front wheel motor 26, rear wheel motor 1 and Wheel motor 28 is in maximum pump discharge afterwards;It is electric that two-way divides the reversal valve 11 in combiner valve 4 to obtain, and diverter 10 is opened, rear wheel motor One 7 is identical with rear wheel motor 28 forces traffic;Now by the discharge capacity adjusting traveling pump 1, can be according to the construction electrodeless regulation of operating mode Operating speed;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 bridge construction of independent suspension it is ensured that front wheel motor 1 and front wheel motor 26 Good tack is such that it is able to ensure that in construction, wheel is non-slip;Simultaneously front wheel motor 1 and front wheel motor 26 directly with Working barrel 1 connects, and flow freely distributes, when construction runs into powerful external impacts, front wheel motor 1 and front wheel motor two 6 can turn to alleviate impact.
When transition transport starting, shift valve 3 must not be electric, front wheel motor 1, front wheel motor 26, rear wheel motor 1 and Wheel motor 28 is in maximum pump discharge afterwards;Two-way divide reversal valve 11 in combiner valve 4 must not electricity, diverter 10 cuts out, front-wheel horse Reach the one 5, flow of front wheel motor 26, rear wheel motor 1 and rear wheel motor 28 freely to distribute;Now by regulation traveling pump 1 Discharge capacity, can be according to road conditions electrodeless regulation starting speed;After stable traveling, shift valve 3 obtains electric, front wheel motor 1, front wheel motor 26, rear wheel motor 1 and rear wheel motor 28 switch to minimum injection rate, now by the discharge capacity adjusting traveling pump 1, can be according to road Condition electrodeless regulation travel speed.
When in transition transportation, the rotating speed of wheel motor 1 and rear wheel motor 28 after speed probe 9 real-time detection, and Tach signal is sent to controller 2, is compared with controller 2 inner motor speed setting value, if exceeding speed setting value, control The device processed output signal of telecommunication to two-way divides combiner valve 4, and two-way point combiner valve semi-finals system is opened, it is to avoid rear wheels slip is it is ensured that during transition Machine's drive power.
In addition: it should be noted that above-mentioned specific embodiment is only a prioritization scheme of this patent, the skill of this area Any change or improvement that art personnel are done according to above-mentioned design, all within the protection domain of this patent.

Claims (4)

1. a kind of Cold Miller travel driving system it is characterised in that: described system includes traveling pump (1), described row The oil-out walking pump (1) is divided into two-way, and a road is communicated to front wheel motor one (5) and front wheel motor two (6), and another road is divided through two-way Combiner valve (4) is communicated to rear wheel motor one (7) and rear wheel motor two (8), thus wheel motor one (5), front wheel motor two before realizing (6), being connected in parallel with each other of rear wheel motor one (7) and rear wheel motor two (8), the slippage pump oil-out of described traveling pump (1) divides For two-way, a road is communicated to the pressure oil port of shift valve (3), and another road is communicated to the control port of two-way point combiner valve (4), institute The oil-out stating shift valve (3) is communicated to front wheel motor one (5), front wheel motor two (6), rear wheel motor one (7) and rear wheel motor Two (8) control port;Described two-way point combiner valve (4) includes diverter (10) and the reversal valve (11) being attached thereto.
2. as claimed in claim 1 a kind of Cold Miller travel driving system it is characterised in that: described rear wheel motor one (7) speed probe (9) and is mounted on rear wheel motor two (8), described speed probe (9) connects to controller (2), institute State controller (2) to be connected with two-way point combiner valve (4).
3. a kind of Cold Miller hoofing part method it is characterised in that: methods described includes a kind of Cold Miller Travel driving system, described system includes traveling pump (1), and the oil-out of described traveling pump (1) is divided into two-way, and a road is communicated to Front wheel motor one (5) and front wheel motor two (6), another road be communicated to through two-way point combiner valve (4) after wheel motor one (7) and trailing wheel Motor two (8), thus realize front wheel motor one (5), front wheel motor two (6), rear wheel motor one (7) and rear wheel motor two (8) It is connected in parallel with each other, the slippage pump oil-out of described traveling pump (1) is divided into two-way, and a road is communicated to the pressure oil of shift valve (3) Mouthful, another road is communicated to the control port of two-way point combiner valve (4), and the oil-out of described shift valve (3) is communicated to front wheel motor One (5), the control port of front wheel motor two (6), rear wheel motor one (7) and rear wheel motor two (8);Described two-way divides combiner valve (4) diverter (10) and the reversal valve (11) being attached thereto are included;
When being constructed, shift valve (3) must not be electric, now front wheel motor one (5), front wheel motor two (6), rear wheel motor one And rear wheel motor two (8) is in maximum pump discharge (7);Two-way divides the reversal valve (11) in combiner valve (4) to obtain electric, diverter (10) Open, rear wheel motor one (7) is identical with rear wheel motor two (8) forces traffic;Now by the discharge capacity adjusting traveling pump (1), can According to construction operating mode electrodeless regulation operating speed;And after under this kind of operating mode, two-way divides combiner valve (4) to force wheel motor one (7) and after The flow of wheel motor two (8) is identical;
When transition transport starting, shift valve (3) must not be electric, front wheel motor one (5), front wheel motor two (6), rear wheel motor one And rear wheel motor two (8) is in maximum pump discharge (7);Two-way divide reversal valve (11) in combiner valve (4) must not electricity, diverter (10) close, front wheel motor one (5), the flow of front wheel motor two (6), rear wheel motor one (7) and rear wheel motor two (8) freely divide Join;Now by the discharge capacity adjusting traveling pump (1), can be according to road conditions electrodeless regulation starting speed;After stable traveling, shift valve (3) must be electric, front wheel motor one (5), front wheel motor two (6), rear wheel motor one (7) and rear wheel motor two (8) switch to float Amount, now by the discharge capacity adjusting traveling pump (1), can be according to road conditions electrodeless regulation travel speed.
4. as claimed in claim 3 a kind of Cold Miller hoofing part method it is characterised in that: described rear wheel motor one (7) speed probe (9) and is mounted on rear wheel motor two (8), described speed probe (9) connects to controller (2), institute State controller (2) to be connected with two-way point combiner valve (4), when in transition transportation, speed probe (9) real-time detection trailing wheel Motor one (7) and the rotating speed of rear wheel motor two (8), and tach signal is sent to controller (2), with controller (2) inner motor Speed setting value is compared, if exceeding speed setting value, the controller output signal of telecommunication to two-way divides combiner valve (4), by two-way Divide combiner valve (4) positive opening.
CN201410407000.3A 2014-08-19 2014-08-19 Walking driving system and method of cold milling machine for pavement Active CN104164830B (en)

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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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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 Priority date Publication date Assignee Title
CN106149537B (en) * 2016-08-22 2018-04-10 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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DE10203732A1 (en) * 2002-01-30 2003-08-21 Wirtgen Gmbh Construction machinery
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
CN100406649C (en) * 2005-12-26 2008-07-30 三一重工股份有限公司 Control method and apparatus for omnirange stepless speed-adjusting travel drive of milling machine
CN103213494B (en) * 2013-04-26 2015-08-05 江苏四明工程机械有限公司 The double speed walking electrohydraulic control system of self-walking machinery
CN103741576B (en) * 2013-12-30 2016-01-20 徐州徐工筑路机械有限公司 A kind of 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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