CN2859096Y

CN2859096Y - Cool milling machine used hydrodynamic torque-converter

Info

Publication number: CN2859096Y
Application number: CN 200520047164
Authority: CN
Inventors: 何芳; 林义; 张锡杰; 谈健; 秦伟一
Original assignee: 711th Research Institute of CSIC
Current assignee: 711th Research Institute of CSIC
Priority date: 2005-12-02
Filing date: 2005-12-02
Publication date: 2007-01-17
Anticipated expiration: 2015-12-02

Abstract

The present utility model discloses a hydraulic torque converter applied to cold milling machine. It includes an impeller, an imported pressure control valve, an exported pressure control valve and a scavenging pump which form the hydraulic loop. In said hydraulic torque converter, the main oil pump provides the pressure oil the hydraulic loop needs, and the lubricating oil filter and the pressure control valve on the lubricating oil path connect with the lubricating oil path in main machine through said hydraulic loop and said hydraulic torque converter respectively, said hydraulic torque converter still includes a double-unloading-loop integrated valve block set between said main oil pump and said hydraulic torque converter. The present utility model uses a set of hydraulic control loops, it can maintain the original variable moment and limit moment, flexible transmission and vibration isolation when the transmission device works normally, and reach the double-unloading role of the hydraulic torque converter applied to cold milling machine through the switch of the hydraulic control loop when the working machine stops.

Description

The cold milling and planing machine fluid torque converter

Technical field

The utility model relates to a kind of hydraudynamic drive mechanical technique, especially a kind of cold milling and planing machine fluid torque converter.

Prior art

In traditional engineering machinery-road surface cold milling and planing machine, adopt the enclosed clutch as the transmission device between power engine and the milling cutter usually.At first, in this kind of drive, the rotating speed during milling cutter work is determined by power engine and is constant substantially; Secondly, because the milling cutter work loads changes often, produce depth of cut as being uneven and differ, even the cutting of interrupted impact occurs because of the road surface, the loading moment that makes milling cutter is not a constant, and such operating mode causes motor will be subjected to bigger impulsive load.Under above two factor effects, make the output power of motor also be difficult to keep constant, the motor that therefore often is in running under the unstable period will obviously descend its working life.

Summary of the invention

The utility model is primarily aimed at above-mentioned cold milling and planing machine prior art situation, propose to adopt the fluid torque converter that can realize flexible transmission to require And realization: during the milling road surface as the cold milling and planing machine transmission device, by fluid torque converter the power of motor is passed to milling cutter, torque-converters plays automatic torque-changing limit square, flexible transmission and vibration isolation effect; When milling machine was only walked not milling, milling cutter and motor broke away from and stall, to guarantee safety.

The technical solution of the utility model is, the cold milling and planing machine fluid torque converter, the oil hydraulic circuit that comprises the fluid torque converter of forming by the dump pump in impeller, fluid torque converter inlet pressure control valve, fluid torque converter outlet pressure control valve and the fluid torque converter of fluid torque converter, the pressure oil that described fluid torque converter provides oil hydraulic circuit to need by main oil pump, lubricating oil path in lubricating oil filter in the described torque-converters, lubricating oil path pressure controlled valve and the main frame is connected with fluid torque converter by oil circuit respectively, it is characterized in that described torque-converters further comprises:

The dual unloading circuit integrated valve block is arranged between described main oil pump and the described fluid torque converter.

The utility model adopts a cover hydraulic control circuit, when the transmission device proper functioning, keeps the cold milling and planing machine original variable moment and limit moment of fluid torque converter, flexible transmission and vibration isolation effect; When need make the work mechanism stall,, realize the two off-load effects of cold milling and planing machine with fluid torque converter by the switching of hydraulic control circuit: one, cut off main oil pump to the fuel feeding road of torque-converters, realize off-load for the first time; Its two, meanwhile, utilize the fluid of active chamber in the dump pump suction torque-converters in the torque-converters, realize off-load for the second time, reach the purpose that makes the torque converter output shaft stall.

The control valve that is adopted in the hydraulic control circuit can have multiple choices: solenoid directional control valve, hand-operated direction valve or hydraulicchange-over valve all can.

Description of drawings

Below, with reference to accompanying drawing, for those skilled in the art that, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.

Fig. 1 is the hydraulic circuit diagram of the utility model one preferred embodiment;

Fig. 2 is the hydraulic circuit diagram of another preferred embodiment;

Fig. 3 is the hydraulic circuit diagram of the 3rd preferred embodiment;

Fig. 4 is an erection drawing of the present utility model.

Embodiment

See also shown in the accompanying drawing 1, fluid torque converter of the present utility model is on the oil hydraulic circuit basis of traditional fluid torque converter, has increased the valve group of control usefulness.It in the diagram oil hydraulic circuit of traditional torque-converters, comprising fluid torque converter trilobed wheel 11 (wherein, B represents that pump impeller, T represent that turbine, D represent guide wheel), the dump pump 14 in fluid torque converter inlet pressure control valve 12, fluid torque converter outlet pressure control valve 13 and the fluid torque converter, the connection between wherein above-mentioned four parts is to be finished by the runner in the fluid torque converter housing.

The pressure oil that traditional fluid torque converter provides oil hydraulic circuit to need by the main oil pump 15 that is arranged on main frame.In addition, also be combined with lubricating oil path 111, lubricating oil filter 19 and lubricating oil path pressure controlled valve 110 in the main frame, wherein the lubricating oil path 111 in lubricating oil filter 19, lubricating oil path pressure controlled valve 110 and the main frame is connected with fluid torque converter by the oil circuit of other setting respectively.

When need are realized two off-load, make two solenoid directional control valves 16,17 switch to another working position, solenoid directional control valve 16 has cut off the fuel feeding road of main oil pump 15 to torque-converters 11 thus, and pump 15 is through solenoid directional control valve 16 off-loads simultaneously; Solenoid directional control valve 17 has been connected dump pump 14 in the torque-converters from the oil circuit of torque-converters 11 inlet suction torque-converters active chamber fluid, and torque-converters 11 inner fluids are reduced to can't transmission, realizes off-load for the second time.

In use, during not off-load, keep the automatic torque-changing limit square function of cold milling and planing machine fluid torque converter, realize the adaptivity and the Security of milling machine work, guarantee flexible transmission and anti-vibration performance;

During two off-load, can realize the stall of cold milling and planing machine torque converter output shaft at short notice.By the TY165 type torque-converters result of calculation that adopts dual unloading circuit, can in less than 30 seconds, realize off-load for the second time;

After two off-loads, the milling cutter stall does not produce danger when guaranteeing milling machine zero load walking.

Fig. 2 is second embodiment's of the utility model a hydraulic circuit diagram, and it forms with Fig. 1 similar substantially, and the difference part only is, has replaced solenoid directional control valve with hand-operated direction valve 26,27.

Fig. 3 is the 3rd embodiment's of the utility model a hydraulic circuit diagram, structure contrast with Fig. 1, can recognize, this structure is on Fig. 1 embodiment's basis, reduction valve 314 and hand-operated direction valve 315 have been increased, these two valves are arranged between main oil pump 35 and the selector valve 36, and it is formed to have replaced solenoid directional control valve with hydraulicchange-over valve 36 and 37.Wherein be subjected to the manipulation of hand-operated direction valve 315 through the control oil pressure of reduction valve 314: when reduction valve 314 is in shown position, the torque-converters proper functioning; When reduction valve 314 switches to the another location, connected the pilot pressure oil passage that is represented by dotted lines, make hydraulicchange-over valve 36,37 switch to another position simultaneously, to realize two off-loads.After two off-loads, torque-converters and milling cutter equally can stalls.

On the erection drawing of two off-load TY165 fluid torque converters of using from the cold milling and planing machine of the employing hydraulicchange-over valve of Fig. 4, can recognize, owing on the conventional construction basis, added plurality of valves, therefore increased the structure of a valve group 42 in shell 41 1 sides of fluid torque converter shown in Figure 4.

As seen by above-mentioned, the cold milling and planing machine fluid torque converter that the utility model relates to is made up of traditional fluid torque converter and the pipeline of one that sets up two off-load oil hydraulic circuit integrated valve blocks and necessity.This pair off-load oil hydraulic circuit mainly is made up of several selector valves (can be respectively solenoid directional control valve, hand-operated direction valve or hydraulicchange-over valve).

With Fig. 1 is example, when being in shown position, and the torque-converters proper functioning; When needs are realized two off-load, as long as make two selector valves switch to another working position, like this, valve 16 has cut off the fuel feeding road of main oil pump 15 to torque-converters, simultaneously pump 15 is realized off-load for the first time through valve 16 off-loads, and valve 17 has been connected dump pump in the torque-converters from the oil circuit of torque-converters inlet suction torque-converters active chamber fluid, the torque-converters inner fluid is reduced to can't transmission, realizes off-load for the second time.

The cold milling and planing machine that the utility model relates to the effect that fluid torque converter in use can reach is:

When not off-load, keep the automatic limit square bending moment function of cold milling and planing machine fluid torque converter, realize the adaptivity and the Security of cold milling and planing machine, guarantee flexible transmission and anti-vibration performance; When realizing two off-load, torque converter output shaft and milling cutter are stopped operating, do not produce danger when guaranteeing the unloaded walking of cold milling and planing machine.

More than all embodiments only for the explanation the utility model usefulness, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technological schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.

Claims

1, cold milling and planing machine fluid torque converter, the oil hydraulic circuit that comprises the fluid torque converter of forming by the dump pump in impeller, fluid torque converter inlet pressure control valve, fluid torque converter outlet pressure control valve and the fluid torque converter of fluid torque converter, the pressure oil that described fluid torque converter provides oil hydraulic circuit to need by main oil pump, lubricating oil path in lubricating oil filter in the described torque-converters, lubricating oil path pressure controlled valve and the main frame is connected with fluid torque converter by oil hydraulic circuit respectively, it is characterized in that described torque-converters further comprises:

2, cold milling and planing machine fluid torque converter according to claim 1 is characterized in that, described dual unloading circuit integrated valve block further comprises:

First valve is arranged in the oil hydraulic circuit between described main oil pump and the described fluid torque converter, is used to control the fuel feeding of described main oil pump to torque-converters, so that described main oil pump carries out the off-load first time through first valve;

Second valve, be arranged between the dump pump and described lubricating oil path pressure controlled valve in the described torque-converters, be used to control dump pump in the torque-converters from the oil circuit of torque-converters inlet suction torque-converters active chamber fluid so that the torque-converters inner fluid be reduced to can't transmission, realize off-load for the second time.

3, cold milling and planing machine fluid torque converter according to claim 2 is characterized in that,

Described first valve and second valve are hand-operated direction valve.

4, cold milling and planing machine fluid torque converter according to claim 2 is characterized in that,

Described first valve and second valve are solenoid directional control valve.

5, cold milling and planing machine fluid torque converter according to claim 2 is characterized in that,

Described first valve and second valve are hydraulicchange-over valve.

6, cold milling and planing machine fluid torque converter according to claim 5 is characterized in that, described fluid torque converter further comprises:

Reduction valve and hand-operated direction valve are arranged between the described main oil pump and first valve, and the oil circuit of wherein said reduction valve is subjected to the control of hand-operated direction valve, and first valve controlled by described hand-operated direction valve and second valve switches to the another location simultaneously, realize two off-loads.