CN204300275U - Hydraulic pressure and the two speed change regulated of servomotor input constant speed output device - Google Patents
Hydraulic pressure and the two speed change regulated of servomotor input constant speed output device Download PDFInfo
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- CN204300275U CN204300275U CN201420635329.0U CN201420635329U CN204300275U CN 204300275 U CN204300275 U CN 204300275U CN 201420635329 U CN201420635329 U CN 201420635329U CN 204300275 U CN204300275 U CN 204300275U
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- hydraulic
- speed
- gear train
- servomotor
- differential gear
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Abstract
The utility model discloses the two speed change regulated of a kind of hydraulic pressure and servomotor and input constant speed output device, comprise one-level differential gear train, secondary differential gear train, hydraulic system, servomotor, speed probe, fixed shaft gear train stepped transmission case and exchange system.The utility model adopts hydraulic pressure, mechanical dual-stream transmission, power output is larger, wherein two constant speed regulation scheme, employing hydraulic system is the main executive system of constant speed regulation, complete the adjustment being caused rotation speed change on a large scale by load changing, the auxiliary adjustment executive system that low power servomotor exports as constant speed, completes the quick adjustment of the fluctuation of speed among a small circle; Single constant speed regulation scheme adopts low power servomotor as the executive system of constant speed regulation, realizes the quick adjustment of fluctuation within a narrow range rotating speed.This device combines for the novelty of constant speed output, infinitely variable speeds, step speed change three kinds of functions, meets different institutions, different work condition environment to the requirement of transmission device.
Description
Technical field
The utility model belongs to engineering machinery and manufactures apparatus field, be specifically related to a kind of differential gear train combine with hydraulic pressure, servomotor, the constant speed that hydraulic pressure and servomotor be two to be regulated, stepless speed regulation combines with step speed regulation and the output device of staged investment.
Background technology
Automated productin line exists and causes velocity variations because of load change on conveyer belt, mechanical arm locates not problem accurately because of the velocity variations of driving-belt, meanwhile, when producing different product, conveyer belt needs friction speed; Add man-hour at precision machine tool, load changes, and output speed changes thus affects machining accuracy; In engineer machinery operation process, there is the problem of load changing, for ensureing the accurate of operation, needing constant rotating speed and large-scale rotational speed regulation.
Constant speed exports and mainly contains three kinds of implementations: hydraulic type constant speed output device, hydraulic constant velocity transmission device and bi-motor Mechanical course transmission device.The domestic and international product exported about hydraulic constant velocity is actually rare at present, and what mostly adopt is guide vane adjustable constant speed output device based on hydrodynamics, this device mainly in high-power unit, complex structure and cost is higher.More not by hydraulic pressure or hydraulic pressure and servomotor two regulate and combine with two differential gear trains realize the scheme that constant speed exports.
The application of stepless speed-regulating device in each field of machinery is quite extensive, realizes stepless speed regulation and speed adjustable range is larger by hydraulic pressure, fluid power or double motor drive system.But the simple stepless speed-regulating device realized by hydraulic pressure, hydraulic power, although speed adjustable range is larger, efficiency is lower; Bi-motor is realized to the device of stepless speed regulation, although speed governing is flexible, efficiency is higher, cannot the impact of bearing load sudden change.
Summary of the invention
For solving complex structure, the inefficiency of constant speed output device in prior art and many deficiencies such as load changing impact cannot being born, the utility model adopts hydraulic pressure, mechanical dual-stream transmission, power output is larger, infinitely variable speeds controls flexible, rational driven Design makes distribution ration of hydraulic power little, and the efficiency of system improves, simultaneously and mechanical type step speed change perfect adaptation, can realize segmentation speed governing, optimizing gearratio can realize full distance speed regulating.And with have compared with a grade machine driving, hydraulic machine fluid drive transmission, its dynamic property, economy and discharge performance are all greatly improved.The utility model, for different work condition environment, designs two schemes: two constant speed regulation scheme and single constant speed regulation scheme.Two constant speed regulation scheme is applicable to the fluctuation of power source output speed, exists compared with heavy load sudden change and the work condition environment needing constant speed to export; Single constant speed regulation is applicable to the fluctuation of power source output speed, does not exist compared with heavy load sudden change and the work condition environment needing constant speed to export.
A kind of hydraulic pressure of the present utility model and the two speed change regulated of servomotor input constant speed output device, comprise one-level differential gear train, secondary differential gear train, hydraulic system, servomotor, speed probe, fixed shaft gear train stepped transmission case and exchange system.
The input of rotation speed change is provided by power source 32, and by primary input axle 31, input power is passed to one-level differential gear train sun gear 1; One-level differential gear train sun gear 1 engages with the one-level differential gear train planetary gear 2 on one-level differential gear train planet carrier 4, and one-level differential gear train planet carrier 4 is connected with primary planet carrier output shaft 16, and then is communicated with exchange system 15.
Hydraulic pump 30 in described hydraulic system is communicated with primary input axle 31 by the second meshing gear 28; Hydraulic motor 18 in hydraulic system is connected with secondary differential gear train sun gear 24; Servomotor 20 is connected with secondary differential gear train gear ring 22 by the first meshing gear 21, and secondary differential gear train planet carrier 25 is connected with secondary planet frame output shaft 27, and secondary planet frame output shaft 27 is connected with one-level differential gear train gear ring 3 by the 3rd meshing gear 26;
Described primary planet carrier output shaft 16 is provided with speed probe monitoring gear 19, the signal that the speed probe of its correspondence sends acts on servomotor 20 through encoder.
Power is input in stepped speed variation 12 by exchange system 15 by described primary planet carrier output shaft 16, finally exports constant rotating speed by output main shaft 5;
The engagement of the tumbler gear 13 in described exchange system 15 is controlled by bidirectional clutch 14; In stepped speed variation 12, the engagement of four pairs of change-speed gearings 6,8,9,11 is controlled by bi-directional friction formula clutch 7,10; One end of the power shaft of stepped speed variation 12 is provided with brake 17;
Particularly, hydraulic system described in two constant speed regulation scheme is by fuel tank 29, oil absorption filter 35, return filter 36, hydraulic pump 30, check valve 39, cooler 37, safety overflow valve 38, flow speed control valve 33, electro-hydraulic proportional valve 34, the compositions such as hydraulic motor 18 and each oil pipe, hydraulic oil in described fuel tank 29 enters hydraulic pump 30 through oil absorption filter 35, again through check valve 39, flow speed control valve 33, electro-hydraulic proportional valve 34 enters hydraulic motor 18, get back in fuel tank 29 through subcooler 37 and return filter 36 again, safety overflow valve 38 is arranged on check valve 39 and exports between cooler 37 entrance, when the setting value of oil pressure higher than safety overflow valve 38, hydraulic oil is without hydraulic motor 18, get back to fuel tank 29 from safety overflow valve 38.The signal that the speed probe of speed probe monitoring corresponding to gear 19 sends acts on described electro-hydraulic proportional valve 34 through amplifier, the fluid input flow rate of hydraulic control motor 18, and then the output speed of hydraulic control motor 18.
Compared with two constant speed regulation scheme, do not use electro-hydraulic proportional valve 34 in the hydraulic system of single constant speed regulation scheme, the signal sent from speed probe no longer acts on electro-hydraulic proportional valve 34 by amplifier.
Overall work process of the present utility model is as follows:
First power source 32 is connected with one-level differential gear train sun gear 1 by primary input axle 31, provides the major impetus of one-level differential gear train; Hydraulic pump 30 in hydraulic system is from primary input axle 31 power taking, the major impetus of secondary differential gear train sun gear 24 as secondary differential gear train is passed to again by the hydraulic motor 18 in hydraulic system, and servomotor 20 is connected with secondary differential gear train gear ring 22 by the first meshing gear 21, the power regulating the small fluctuation of speed is provided, finally using secondary differential gear train planet carrier 25 as output, to be connected with one-level differential gear train gear ring 3 by the 3rd meshing gear 26 and to realize speed considerations, and exported by one-level differential gear train planet carrier 4, finally realize constant speed and export; Primary planet carrier output shaft 16 is connected with stepped speed variation 12 with exchange system 15 successively and realizes commutating and step speed regulation;
Flow speed control valve 33 manually in regulator solution pressing system carries out stepless speed regulation, and control inputs is to the fluid flow of hydraulic motor 18, and then hydraulic control motor 18 output speed, thus changes the output speed of one-level differential gear train planet carrier 4.
In two constant speed regulation scheme, the adjustment of output speed constant speed, is regulated by hydraulic pressure and servomotor pair.The signal rotating speed that the speed probe of speed probe monitoring corresponding to gear 19 sends acts on the electro-hydraulic proportional valve 34 in hydraulic system through amplifier, the fluid input flow rate of hydraulic control motor 18, and then the output speed of hydraulic control motor 18; The signal that speed probe sends simultaneously also acts on servomotor 20 through encoder, controls servomotor 20 rotating speed.
Single constant speed regulation scheme is relative to two constant speed regulation scheme, simplify the electro-hydraulic proportional valve 34 in hydraulic system, the adjustment of the fluctuation of speed is only completed by servomotor 20, namely signal is only acted on servomotor 20 by encoder by the speed probe of speed probe monitoring corresponding to gear 19, the compensating rotational speed that automatic control servomotor 20 provides, no longer acts on hydraulic system.
The two sets of plan of this device all adopts the agent structure exported for infinitely variable speeds and constant speed with 2K-H type differential gear train, take hydraulic system as the executive system of stepless speed regulation, coordinate the step speed change of fixed shaft gear train and reversing arrangement to complete the function of staged investment and commutation, optimizing step speed regulation variable gearing ratio can realize full distance speed regulating.Wherein two constant speed regulation scheme, employing hydraulic system is the main executive system of constant speed regulation, complete the adjustment being caused rotation speed change on a large scale by load changing, the auxiliary adjustment executive system that low power servomotor exports as constant speed, complete the quick adjustment of the fluctuation of speed among a small circle; Single constant speed regulation scheme adopts low power servomotor as the executive system of constant speed regulation, realizes the quick adjustment of fluctuation within a narrow range rotating speed.For 2K-H type differential gear train, adopt sun gear and gear ring two inputs, planet carrier output, the scheme of multiple planetary gear, shares larger load, reduces inertia force and centrifugal force.
For the realization of step speed change and commutation function, the scheme that this device adopts Clutch and brake to combine, and devise delay interlock with the safety of ensuring equipment, when being namely transformed to bottom gear or commutation by top gear, clutch is first in released state, brake operation reduction of speed, last clutch is closed realizes downshift or commutation.
The beneficial effects of the utility model are:
The utility model by hydraulic pressure, servomotor, differential gear train triplicity together, achieves the function that stepless speed regulation and constant speed export; Stepless speed regulation combined with step speed regulation, achieve segmentation speed governing, optimize variable gearing ratio, can realize full distance speed regulating, speed adjustable range is larger.Speed change input constant speed output device of the present utility model, mainly in middle low power product, changes the output speed of the change that instability inputs or swinging load causes into stabilized (steady-state) speed and exports, and can carry out stepless speed regulation on a large scale.This device effectively can improve the situation that the mechanical driving device that combines about differential gear train and Hydraulic Elements in prior art lacks in middle low power application.This device combines for the novelty of constant speed output, infinitely variable speeds, step speed change three kinds of functions simultaneously, meets different institutions, different work condition environment to the requirement of transmission device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic diagram of hydraulic system in two constant speed regulation scheme.
Fig. 3 is the schematic diagram of hydraulic system in single constant speed regulation scheme.
In figure:
1, one-level differential gear train sun gear; 2, one-level differential gear train planetary gear; 3, one-level differential gear train gear ring;
4, one-level differential gear train planet carrier; 5, main shaft is exported; 6,8,9,11 is four pairs of change-speed gearings;
7,10 is bi-directional friction formula clutch; 12, stepped speed variation; 13, tumbler gear;
14, bidirectional clutch; 15, exchange system; 16, primary planet carrier output shaft; 17, brake;
18, hydraulic motor; 19, speed probe monitoring gear; 20, servomotor;
21, the first meshing gear; 22, secondary differential gear train gear ring; 23, secondary differential gear train planetary gear;
24, secondary differential gear train sun gear; 25, secondary differential gear train planet carrier; 26, the 3rd meshing gear;
27, secondary planet frame output shaft; 28, the second meshing gear; 29, hydraulic oil container; 30, hydraulic pump;
31, primary input axle; 32, power source; 33, flow speed control valve; 34, electro-hydraulic proportional valve;
35, oil absorption filter; 36, return filter; 37, cooler; 38, safety overflow valve;
39, check valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
A kind of hydraulic pressure as described in Figure 1 and the two speed change regulated of servomotor input constant speed output device, comprise one-level differential gear train, secondary differential gear train, hydraulic system, servomotor, speed probe, fixed shaft gear train stepped transmission case and exchange system;
The input of rotation speed change is provided by power source 32, and by primary input axle 31, input power is passed to one-level differential gear train sun gear 1, one-level differential gear train sun gear 1 engages with the one-level differential gear train planetary gear 2 on one-level differential gear train planet carrier 4, one-level differential gear train planet carrier 4 is connected with primary planet carrier output shaft 16, and then is communicated with exchange system 15;
Hydraulic pump 30 in described hydraulic system is communicated with primary input axle 31 by the second meshing gear 28; Hydraulic motor 18 in hydraulic system is connected with secondary differential gear train sun gear 24; Servomotor 20 is connected with secondary differential gear train gear ring 22 by the first meshing gear 21, and secondary differential gear train planet carrier 25 is connected with secondary planet frame output shaft 27, and secondary planet frame output shaft 27 is connected with one-level differential gear train gear ring 3 by the 3rd meshing gear 26;
Described primary planet carrier output shaft 16 is provided with speed probe monitoring gear 19, the signal that the speed probe of its correspondence sends acts on servomotor 20 through encoder;
Power is input in stepped speed variation 12 by exchange system 15 by described primary planet carrier output shaft 16, finally exports constant rotating speed by output main shaft 5.
The engagement of the tumbler gear 13 in described exchange system 15 is controlled by bidirectional clutch 14.
In described stepped speed variation 12, the engagement of four pairs of change-speed gearings 6,8,9,11 is controlled by bi-directional friction formula clutch 7,10.
One end of the power shaft of described stepped speed variation 12 is provided with brake 17.
The schematic diagram of hydraulic system in two constant speed regulation schemes as shown in Figure 2, described hydraulic system is by fuel tank 29, oil absorption filter 35, return filter 36, hydraulic pump 30, check valve 39, cooler 37, safety overflow valve 38, flow speed control valve 33, electro-hydraulic proportional valve 34, the compositions such as hydraulic motor 18 and each oil pipe, hydraulic oil in described fuel tank 29 enters hydraulic pump 30 through oil absorption filter 35, again through check valve 39, flow speed control valve 33, electro-hydraulic proportional valve 34 enters hydraulic motor 18, get back in fuel tank 29 through subcooler 37 and return filter 36 again, safety overflow valve 38 is arranged on check valve 39 and exports between cooler 37 entrance, when the setting value of oil pressure higher than safety overflow valve 38, hydraulic oil is without hydraulic motor 18, get back to fuel tank 29 from safety overflow valve 38, the signal that the speed probe of speed probe monitoring corresponding to gear 19 sends acts on described electro-hydraulic proportional valve 34 through amplifier, the fluid input flow rate of hydraulic control motor 18, and then the output speed of hydraulic control motor 18.
The schematic diagram of hydraulic system in single constant speed regulation scheme as shown in Figure 3, described hydraulic system is by fuel tank 29, oil absorption filter 35, return filter 36, hydraulic pump 30, check valve 39, cooler 37, safety overflow valve 38, flow speed control valve 33, the compositions such as hydraulic motor 18 and each oil pipe, hydraulic oil in described fuel tank 29 enters hydraulic pump 30 through oil absorption filter 35, again through check valve 39, flow speed control valve 33 enters hydraulic motor 18, get back in fuel tank 29 through subcooler 37 and return filter 36 again, safety overflow valve 38 is arranged on check valve 39 and exports between cooler 37 entrance, when the setting value of oil pressure higher than safety overflow valve 38, hydraulic oil is without hydraulic motor 18, get back to fuel tank 29 from safety overflow valve 38, the signal sent from speed probe does not act on hydraulic system.
Overall work process of the present utility model is as follows:
First power source 32 is connected with one-level differential gear train sun gear 1 by primary input axle 31, provides the major impetus of one-level differential gear train; Hydraulic pump 30 in hydraulic system is from primary input axle 31 power taking, the major impetus of secondary differential gear train sun gear 24 as secondary differential gear train is passed to again by the hydraulic motor 18 in hydraulic system, and servomotor 20 is connected with secondary differential gear train gear ring 22 by the first meshing gear 21, the power regulating the small fluctuation of speed is provided, finally using secondary differential gear train planet carrier 25 as output, to be connected with one-level differential gear train gear ring 3 by the 3rd meshing gear 26 and to realize speed considerations, and exported by one-level differential gear train planet carrier 4, finally realize constant speed and export; Primary planet carrier output shaft 16 is connected with stepped speed variation 12 with exchange system 15 successively and realizes commutating and step speed regulation;
Flow speed control valve 33 manually in regulator solution pressing system carries out stepless speed regulation, and control inputs is to the fluid flow of hydraulic motor 18, and then hydraulic control motor 18 output speed, thus changes the output speed of one-level differential gear train planet carrier 4.
In two constant speed regulation scheme, the adjustment of output speed constant speed, is regulated by hydraulic pressure and servomotor pair.The signal rotating speed that the speed probe of speed probe monitoring corresponding to gear 19 sends acts on the electro-hydraulic proportional valve 34 in hydraulic system through amplifier, the fluid input flow rate of hydraulic control motor 18, and then the output speed of hydraulic control motor 18; The signal that speed probe sends simultaneously also acts on servomotor 20 through encoder, controls servomotor 20 rotating speed.
Single constant speed regulation scheme is relative to two constant speed regulation scheme, simplify the electro-hydraulic proportional valve 34 in hydraulic system, the adjustment of the fluctuation of speed is only completed by servomotor 20, namely monitor gear 19 and only signal is acted on servomotor 20 by encoder, the compensating rotational speed that automatic control servomotor 20 provides, no longer acts on hydraulic system.
The two sets of plan of this device all adopts the agent structure exported for infinitely variable speeds and constant speed with 2K-H type differential gear train, take hydraulic system as the executive system of stepless speed regulation, coordinate the step speed change of fixed shaft gear train and reversing arrangement to complete the function of staged investment and commutation, optimizing step speed regulation variable gearing ratio can realize full distance speed regulating.Wherein two constant speed regulation scheme, employing hydraulic system is the main executive system of constant speed regulation, complete the adjustment being caused rotation speed change on a large scale by load changing, the auxiliary adjustment executive system that low power servomotor exports as constant speed, complete the quick adjustment of the fluctuation of speed among a small circle; Single constant speed regulation scheme adopts low power servomotor as the executive system of constant speed regulation, realizes the quick adjustment of fluctuation within a narrow range rotating speed.For 2K-H type differential gear train, adopt sun gear and gear ring two inputs, planet carrier output, the scheme of multiple planetary gear, shares larger load, reduces inertia force and centrifugal force.
For the realization of step speed change and commutation function, the scheme that this device adopts Clutch and brake to combine, and devise delay interlock with the safety of ensuring equipment, when being namely transformed to bottom gear or commutation by top gear, clutch is first in released state, brake operation reduction of speed, last clutch is closed realizes downshift or commutation.
Above the utility model is described in detail, for one of ordinary skill in the art, according to the thought of the utility model embodiment, detailed description of the invention and range of application all will change, and described description should not be construed as restriction of the present utility model; Above-described all embodiments are preferred embodiment of the present utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. hydraulic pressure and the two speed change regulated of servomotor input a constant speed output device, comprise one-level differential gear train, secondary differential gear train, hydraulic system, servomotor, speed probe, fixed shaft gear train stepped transmission case and exchange system; It is characterized in that:
The input of rotation speed change is provided by power source (32), and by primary input axle (31), input power is passed to one-level differential gear train sun gear (1), one-level differential gear train sun gear (1) engages with the one-level differential gear train planetary gear (2) on one-level differential gear train planet carrier (4), one-level differential gear train planet carrier (4) is connected with primary planet carrier output shaft (16), and then is communicated with exchange system (15);
Hydraulic pump (30) in described hydraulic system is communicated with primary input axle (31) by the second meshing gear (28); Hydraulic motor (18) in hydraulic system is connected with secondary differential gear train sun gear (24); Servomotor (20) is connected with secondary differential gear train gear ring (22) by the first meshing gear (21), secondary differential gear train planet carrier (25) is connected with secondary planet frame output shaft (27), and secondary planet frame output shaft (27) is connected with one-level differential gear train gear ring (3) by the 3rd meshing gear (26);
Described primary planet carrier output shaft (16) is provided with speed probe monitoring gear (19), the signal that the speed probe of its correspondence sends acts on servomotor (20) through encoder;
Power is input in stepped speed variation (12) by exchange system (15) by described primary planet carrier output shaft (16), finally exports constant rotating speed by output main shaft (5).
2. a kind of hydraulic pressure according to claim 1 and the two speed change regulated of servomotor input constant speed output device, it is characterized in that:
The engagement of the tumbler gear (13) in described exchange system (15) is controlled by bidirectional clutch (14).
3. a kind of hydraulic pressure according to claim 1 and the two speed change regulated of servomotor input constant speed output device, it is characterized in that:
In described stepped speed variation (12), the engagement of four pairs of change-speed gearings (6,8,9,11) is controlled by bi-directional friction formula clutch (7,10).
4. a kind of hydraulic pressure according to claim 1 and the two speed change regulated of servomotor input constant speed output device, it is characterized in that:
One end of the power shaft of described stepped speed variation (12) is provided with brake (17).
5. a kind of hydraulic pressure according to claim 1 and the two speed change regulated of servomotor input constant speed output device, it is characterized in that:
Described hydraulic system is by fuel tank (29), oil absorption filter (35), return filter (36), hydraulic pump (30), check valve (39), cooler (37), safety overflow valve (38), flow speed control valve (33), electro-hydraulic proportional valve (34), the compositions such as hydraulic motor (18) and each oil pipe, hydraulic oil in described fuel tank (29) enters hydraulic pump (30) through oil absorption filter (35), again through check valve (39), flow speed control valve (33), electro-hydraulic proportional valve (34) enters hydraulic motor (18), get back in fuel tank (29) through subcooler (37) and return filter (36) again, safety overflow valve (38) is arranged between check valve (39) outlet and cooler (37) entrance, when the setting value of oil pressure higher than safety overflow valve (38), hydraulic oil is without hydraulic motor (18), get back to fuel tank (29) from safety overflow valve (38),
The signal that speed probe corresponding to speed probe monitoring gear (19) sends acts on described electro-hydraulic proportional valve (34) through amplifier, the fluid input flow rate of hydraulic control motor (18), and then the output speed of hydraulic control motor (18).
6. a kind of hydraulic pressure according to claim 1 and the two speed change regulated of servomotor input constant speed output device, it is characterized in that:
Described hydraulic system is by fuel tank (29), oil absorption filter (35), return filter (36), hydraulic pump (30), check valve (39), cooler (37), safety overflow valve (38), flow speed control valve (33), the compositions such as hydraulic motor (18) and each oil pipe, hydraulic oil in described fuel tank (29) enters hydraulic pump (30) through oil absorption filter (35), again through check valve (39), flow speed control valve (33) enters hydraulic motor (18), get back in fuel tank (29) through subcooler (37) and return filter (36) again, safety overflow valve (38) is arranged between check valve (39) outlet and cooler (37) entrance, when the setting value of oil pressure higher than safety overflow valve (38), hydraulic oil is without hydraulic motor (18), get back to fuel tank (29) from safety overflow valve (38), the signal sent from speed probe does not act on hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635329.0U CN204300275U (en) | 2014-10-28 | 2014-10-28 | Hydraulic pressure and the two speed change regulated of servomotor input constant speed output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635329.0U CN204300275U (en) | 2014-10-28 | 2014-10-28 | Hydraulic pressure and the two speed change regulated of servomotor input constant speed output device |
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| CN204300275U true CN204300275U (en) | 2015-04-29 |
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|---|---|---|---|
| CN201420635329.0U Withdrawn - After Issue CN204300275U (en) | 2014-10-28 | 2014-10-28 | Hydraulic pressure and the two speed change regulated of servomotor input constant speed output device |
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| CN (1) | CN204300275U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358853A (en) * | 2014-10-28 | 2015-02-18 | 吉林大学 | Variable-input and constant-output device adopting hydraulic and servo motor double regulation |
| CN105045090A (en) * | 2015-06-25 | 2015-11-11 | 吉林大学 | Constant speed control method and apparatus for hydraulic retarder based on fuzzy controls |
| CN107246467A (en) * | 2017-05-02 | 2017-10-13 | 北京理工大学 | Loader hydraulic mechanical stepless transmission device |
-
2014
- 2014-10-28 CN CN201420635329.0U patent/CN204300275U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358853A (en) * | 2014-10-28 | 2015-02-18 | 吉林大学 | Variable-input and constant-output device adopting hydraulic and servo motor double regulation |
| CN105045090A (en) * | 2015-06-25 | 2015-11-11 | 吉林大学 | Constant speed control method and apparatus for hydraulic retarder based on fuzzy controls |
| CN107246467A (en) * | 2017-05-02 | 2017-10-13 | 北京理工大学 | Loader hydraulic mechanical stepless transmission device |
| CN107246467B (en) * | 2017-05-02 | 2019-12-13 | 北京理工大学 | Stepless transmission device for hydraulic machinery of loader |
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Granted publication date: 20150429 Effective date of abandoning: 20160817 |
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