CN204080604U - A kind of Cold Miller travel driving system - Google Patents

A kind of Cold Miller travel driving system Download PDF

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Publication number
CN204080604U
CN204080604U CN201420466708.1U CN201420466708U CN204080604U CN 204080604 U CN204080604 U CN 204080604U CN 201420466708 U CN201420466708 U CN 201420466708U CN 204080604 U CN204080604 U CN 204080604U
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wheel motor
valve
communicated
way
wheel
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CN201420466708.1U
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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 utility model relates to 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, thus 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 oil 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).The utility model Cold Miller travel driving system, structure is simple, easy to operate.

Description

A kind of Cold Miller travel driving system
Technical field
The utility model relates to the fluid power system of a kind of four-wheel drive vehicle walking, especially relates to a kind of walking fluid power system adopting the Cold Miller of four-wheel drive, belongs to milling machine technical field.
Background technology
Milling machine can be repaired the flexible pavement of breakage 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 comparatively large, and speed is lower, for ensureing work quality, needs to ensure that complete machine low-speed stable travels; And need transition rapidly flexibly after construction.
Milling machine travel driving system generally adopts following two schemes in the industry:
One is mechanical transmission scheme: driving-chain is generally motor---clutch---gearbox---mechanical type propons.Mechanical transmission scheme driving-chain is complicated, and fault rate is higher; And mechanical manipulation is comparatively required great effort, tractor driver's labour intensity is larger.
It two is all-hydraulic omnidistance stepless time adjustment hoofing part scheme: the program 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 continuous electrodeless adjustable that this hoofing part scheme can realize 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, transition two kinds of operating modes in milling machine, and operating rate is at about 2Km/h, and transition speed, generally at more than 8Km/h, is not used in speed regulating section real works a large amount of in the middle of stepless time adjustment system;
3, in work, four roads point combiner valve forces to make four running motor flows identical, when being subject to powerful external impacts, and complete machine buffering in stays, complete machine like this, 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 purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of Cold Miller travel driving system, and it can avoid the operation inconvenience of mechanical transmission scheme, and simultaneously automatically controlled logic, hydraulic system are comparatively simple; When ensureing easy to operate, simplifying system, reducing operation troubles rate.
The purpose of this utility model is achieved in that 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, thus 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 oil 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 utility model, 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 utility model, described rear wheel motor one and rear wheel motor two are all provided with speed probe, 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 hoofing part of the utility model method,
When 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 regulating walking pump delivery, can according to the electrodeless adjustment operating speed of construction operating mode; And wheel motor one is identical with the flow of rear wheel motor two after under this kind of operating mode, two-way divides combiner valve to force;
When 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 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 regulating walking pump delivery, can according to the electrodeless adjustment starting speed of road conditions; After stable traveling, 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 regulating walking pump delivery, and can according to the electrodeless adjustment travel speed of road conditions.
A kind of Cold Miller hoofing part of the utility model method, when in transition transportation, speed probe detects the rotating speed of rear wheel motor one and rear wheel motor two in real time, and tach signal is sent to controller, compare with controller inner motor speed setting value, if exceed speed setting value, controller exports the signal of telecommunication and divides combiner valve to two-way, two-way is divided combiner valve positive opening.
Compared with prior art, the beneficial effects of the utility model are:
1, adopt two position variable axial plunger motors, rear wheel motor one and rear wheel motor two minimum injection rate are about the half of maximum pump discharge, and front wheel motor one and front wheel motor two minimum injection rate are close to zero delivery;
2, during work, front wheel motor one, front wheel motor two, rear wheel motor one and rear wheel motor two are all in huge discharge, ensure the driving force that complete machine is powerful; During 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 is in freewheel state (front wheel motor one and front wheel motor two minimum injection rate are close to zero delivery), ensures the quick transition of complete machine;
3, adopt two-way to divide combiner valve to control the flow of wheel motor after two, and before two, wheel motor is directly connected with working barrel;
4, during 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 to dally, and ensures that in complete machine construction, 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, simultaneously wheel motor is directly connected with working barrel before two, and flow freely distributes, when running into powerful external impacts in construction, front-wheel can turn to alleviate impact;
5, during transition walking, two-way divides combiner valve to close, 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 speed, and tach signal is sent to controller, compare with controller inner motor speed setting value, if exceed speed setting value, controller exports the signal of telecommunication and divides combiner valve to two-way, two-way is divided combiner valve positive opening, avoid rear wheels slip; Ensure machine's drive power.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Cold Miller travel driving system of the utility model.
Fig. 2 is the structural representation of the two-way point combiner valve of a kind of Cold Miller travel driving system of the utility model.
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
See Fig. 1 and Fig. 2, a kind of Cold Miller travel driving system that the utility model 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, thus 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, and the minimum injection rate of rear wheel motor 1 and rear wheel motor 28 is the half of maximum pump discharge;
Described two-way divides combiner valve 4 for a kind of cartridge valve, include current divider 10 and the reversal valve 11(that is 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 oil 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 and the oil inlet P 1 of reversal valve 11 of two-way point combiner valve 4, 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,
Described rear wheel motor 1 and rear wheel motor 28 are all provided with speed probe 9, 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 reversal valve 11 in two-way point combiner valve 4, under transition comfortable property, when speed probe 9 detects that trailing wheel exceeds the speed limit, controller 2 exports and controls the electromagnetic coil Y1 of electric current to reversal valve 11, and reversal valve 11 is commutated, and current divider 10 is opened).
A kind of Cold Miller hoofing part of the utility model method;
When 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; Two-way divides the reversal valve 11 in combiner valve 4 to obtain electric, and current divider 10 is opened, and rear wheel motor 1 is identical with rear wheel motor 28 forces traffic; Now by regulating the discharge capacity of traveling pump 1, can according to the electrodeless adjustment operating speed of construction operating mode; And wheel motor 1 is identical with the flow of rear wheel motor 28 after under this kind of operating mode, two-way divides combiner valve semi-finals system, and front wheel motor 1 and front wheel motor 26 adopt the swing axle structure of independent suspension, ensure that front wheel motor 1 and the good tack of front wheel motor 26, thus 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 when running into powerful external impacts in construction, front wheel motor 1 and front wheel motor 26 can turn to alleviate impact.
When 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 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 by regulating the discharge capacity of traveling pump 1, can according to the electrodeless adjustment starting speed of road conditions; After stable traveling, 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 according to the electrodeless adjustment 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 value, if exceed speed setting value, controller exports the signal of telecommunication to two-way and divides combiner valve 4, a two-way point combiner valve semi-finals system is opened, avoid rear wheels slip, machine's drive power during guarantee 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 that those skilled in the art does according to above-mentioned design or improvement, all within the protection domain of this patent.

Claims (3)

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, thus 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 oil 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: described rear wheel motor one (7) and rear wheel motor two (8) are all provided with speed probe (9), described speed probe (9) is connected to controller (2), and described controller (2) is connected with two-way point combiner valve (4).
CN201420466708.1U 2014-08-19 2014-08-19 A kind of Cold Miller travel driving system Active CN204080604U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420466708.1U CN204080604U (en) 2014-08-19 2014-08-19 A kind of Cold Miller travel driving system

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Application Number Priority Date Filing Date Title
CN201420466708.1U CN204080604U (en) 2014-08-19 2014-08-19 A kind of Cold Miller travel driving system

Publications (1)

Publication Number Publication Date
CN204080604U true CN204080604U (en) 2015-01-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104164830A (en) * 2014-08-19 2014-11-26 柳工无锡路面机械有限公司 Walking driving system and method of cold milling machine for pavement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104164830A (en) * 2014-08-19 2014-11-26 柳工无锡路面机械有限公司 Walking driving system and method of cold milling machine for pavement

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