CN204739183U - Hydraulic transmission device's servo control with fixed set -point mechanism - Google Patents
Hydraulic transmission device's servo control with fixed set -point mechanism Download PDFInfo
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- CN204739183U CN204739183U CN201520402207.1U CN201520402207U CN204739183U CN 204739183 U CN204739183 U CN 204739183U CN 201520402207 U CN201520402207 U CN 201520402207U CN 204739183 U CN204739183 U CN 204739183U
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Abstract
The utility model provides a hydraulic transmission device's servo control with fixed set -point mechanism, stroking mechanism that includes operating handle, be connected with operating handle and for the stroking mechanism provides hydraulic power's slippage pump, the stroking mechanism includes variable piston and variable jar, form a variable chamber between the casing of variable jar and variable jar outside, the variable jar passes through the sloping cam plate connecting piece to be connected with the sloping cam plate, operating handle when swing drives the variable piston and makes rectilinear movement, at this moment, through with variable jar complex clearance, will mend oil pump pressure oil and introduce the variable chamber, the variable jar the effect of the hydraulic oil of slippage pump output down and the variable piston remove together, the utility model discloses be applied to hydraulic transmission device, moment is little, the operation is comfortable, can realize infinitely variable to has the definite value function.
Description
Technical field
The utility model relates to a kind of servo setting control mechanism of hydraulic transmission, belongs to machinery manufacturing technology field.
Background technique
Hydraulic transmission comes transferring energy and the kind of drive of carrying out controlling with liquid as working medium, is a special kind of skill widely applied in industrial and agricultural production.
Hydraulic transmission is integrated by oil pump, motor and hydraulic services, its principle utilizes oil pump that the mechanical energy of prime mover is converted to the pressure energy of liquid, transferring energy is carried out by the change of fluid pressure energy, through the transmission of various control valve and pipeline, by means of motor, fluid pressure can be converted to mechanical energy, thus drive operation mechanism, realize straight reciprocating motion and rotation motion.
Hydraulic transmission has following advantage: level of integration is high, volume is little, lightweight, and such as only have the 10%-20% of motor with the weight of power oil hydraulic motor, therefore inertial force is little, when overload suddenly or when stopping, large impact can not occur; Commutation easily, when not changing motor sense of rotation, more conveniently can realize the conversion that operation mechanism rotates and linear reciprocation is run; Connected by built-in oil circuit between oil pump and oil hydraulic motor, level of integration is high; Adopt fluid as working medium, between elements relative moving surface, energy lubricating by oneself, weares and teares little, long service life; Maneuvering and control is easy, and automaticity is high.
Because hydraulic transmission has many outstanding advantages, be therefore widely used in agricultural harvesting machinery field at present, realize transmission of power and drive walking.Due to the requirement of the function of hydraulic transmission own, hydraulic transmission should possess infinite variable speed function.
Traditional hydraulic transmission with stepless shift function, normally directly manually change the pivot angle of oil pump swash plate, the discharge capacity of control oil pump, thus realize stepless change, this method is comparatively simple, its shortcoming is that moment is large, the vibration that simultaneous load causes, and operation comfort is poor, hand is once leave operating grip, operating grip affects to have by hydraulic transmission and complete machine oscillation and to a certain degree swings, and without definite value function, affects the speed of travel of complete machine.
In view of above shortcomings part in prior art, need to design a kind of moment little, operate comfortable, the servo setting control mechanism of setting control can be realized simultaneously.
Model utility content
In view of this, the purpose of this utility model is the servo setting control mechanism providing a kind of hydraulic transmission, the swash plate of oil pump can be stopped arbitrarily angled, realizes stepless change, to make up the deficiencies in the prior art and to meet actual demand.
For achieving the above object, the utility model provides following technological scheme:
A kind of servo setting control mechanism of hydraulic transmission, comprise operating grip, the stroking mechanism be connected with operating grip and provide the slippage pump of hydraulic power for stroking mechanism, described stroking mechanism comprises variable piston and variable cylinder, a variable chamber is formed between the housing of described variable cylinder and variable cylinder outside, variable cylinder is connected with swash plate by swash plate link, when described operating grip swings, follow variable piston under the effect of the hydraulic oil that variable cylinder exports at slippage pump and move together.
Preferably, operating grip is connected with variable piston, and described operating grip swings the movement driving variable piston.
Preferably, be provided with oil duct between variable chamber and variable piston, described repairing delivery side of pump connects oil duct, and hydraulic oil is caused variable chamber by the movement of described variable piston.
Preferably, follow variable piston under the effect of described variable cylinder hydraulic oil in variable chamber to move together.
Preferably, swash plate is arranged on main pump, for the hydraulic oil output quantity of the main pump of hydraulic control transmission device.
Compared with prior art, the utility model has the following advantages:
Servo setting control mechanism, comprise operating grip, the stroking mechanism be connected with operating grip and provide the slippage pump of hydraulic power for stroking mechanism, stroking mechanism comprises variable piston and variable cylinder.
Swinging operation handle, the variable piston be connected with operating grip is moved, and causes in variable chamber by the hydraulic oil that slippage pump exports along oil duct, and the high pressure oil promotion variable cylinder in variable chamber is followed variable piston and moved together.Variable cylinder is connected with the swash plate of main pump by swash plate link, swash plate is used for the hydraulic oil output quantity of the main pump of hydraulic control transmission device, because operating grip only drives variable piston to move, operational torque is little, and stroking mechanism drives swash plate to realize the stepless change of hydraulic transmission.When swash plate pendulum is to the angle of specifying, variable cylinder stops mobile, and cutting-off liquid force feed, hydraulic transmission stays in this, realizes definite value function.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the sectional structure schematic diagram of servo setting control mechanism disclosed in the utility model embodiment;
Fig. 2 is the structural representation of stroking mechanism disclosed in the utility model embodiment.
Wherein:
1-operating grip 2-stroking mechanism 3-slippage pump
4-swash plate link 21-variable piston 22-variable cylinder
23-variable chamber
Embodiment
As described in background, existing hydraulic transmission realizes stepless change primarily of the swing manually directly controlling swash plate, moment is large, the vibration that simultaneous load causes, travelling comfort is poor, hand leaves Joystick, and handle affects to have by hydraulic transmission and complete machine oscillation and to a certain degree swings, and affects the speed of travel.
The utility model discloses a kind of servo setting control mechanism of hydraulic transmission, comprise operating grip, the stroking mechanism be connected with operating grip and provide the slippage pump of hydraulic power for stroking mechanism, described stroking mechanism comprises variable piston and variable cylinder, a variable chamber is formed between the housing of described variable cylinder and variable cylinder outside, variable cylinder is connected with swash plate by swash plate link, when described operating grip swings, follow variable piston under the effect of the hydraulic oil that variable cylinder exports at slippage pump and move together.
Preferably, operating grip is connected with variable piston, and described operating grip swings the movement driving variable piston.
Preferably, be provided with oil duct between variable chamber and variable piston, described repairing delivery side of pump connects oil duct, and hydraulic oil is caused variable chamber by the movement of described variable piston.
Preferably, follow variable piston under the effect of described variable cylinder hydraulic oil in variable chamber to move together.
Preferably, swash plate is arranged on main pump, for the hydraulic oil output quantity of the main pump of hydraulic control transmission device.
To be clearly and completely described the technical solution of the utility model by embodiment below.Obvious, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belongs to the scope of the utility model protection.
Please refer to Fig. 1, Fig. 1 is the sectional structure schematic diagram of servo setting control mechanism.The servo setting control mechanism of hydraulic transmission, comprises operating grip 1, the stroking mechanism 2 be connected with operating lever 1 and provides the slippage pump 3 of hydraulic power for variant structural 2.The hydraulic oil of slippage pump 3 causes variable chamber 23 by stroking mechanism 2, and under the promotion of hydraulic coupling, stroking mechanism 2 drives swash plate to swing the stepless change realizing hydraulic transmission.
Please refer to Fig. 2, Fig. 2 is the structural representation of stroking mechanism.Stroking mechanism 2 comprises variable piston 21 and variable cylinder 22, above-mentioned variable chamber 23 is the space formed between the housing of variable cylinder 22 and variable cylinder 22 outside, oil duct is provided with between variable chamber 23 and variable piston 21, the output terminal of described slippage pump 3 connects oil duct, and hydraulic oil is caused variable chamber 23 by the movement of described variable piston 21.When described operating grip 1 swings, move together with variable piston 21 under the effect of described variable cylinder 22 hydraulic oil in variable chamber 23.Variable cylinder 22 is connected with swash plate by swash plate link 4, and swash plate is arranged on main pump, for the hydraulic oil output quantity of the main pump of hydraulic control transmission device.
Hydraulic transmission belongs to closed system, for making up internal leakage, need join slippage pump, and this is that the realization of servo setting control provides hydraulic power, and slippage pump can provide the hydraulic power more steady than hydraulic transmission for servo setting control.
Working procedure of the present utility model is as follows:
Swinging operation handle from operating grip initial position, the variable piston be connected with operating grip is moved, and causes in variable chamber by the hydraulic oil that slippage pump exports along oil duct, and the high pressure oil promotion variable cylinder in variable chamber is followed variable piston and moved together.Variable cylinder is connected with the swash plate of main pump by swash plate link, and swash plate is used for the hydraulic oil output quantity of the main pump of hydraulic control transmission device, and because operating grip only drives variable piston to move, operational torque is little, and stroking mechanism drives swash plate to realize stepless change.When swash plate pendulum is to the angle of specifying, variable cylinder stops mobile, and cutting-off liquid force feed, hydraulic transmission stays in this, realizes definite value function.
The utility model is applied to hydraulic transmission, and moment is little, can not produce the vibration that load causes, and operates comfortable, can realize the stepless change of hydraulic transmission, and has definite value function, and solving existing product cannot the defect of setting control.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. the servo setting control mechanism of a hydraulic transmission, it is characterized in that: comprise operating grip, the stroking mechanism be connected with operating grip and provide the slippage pump of hydraulic power for stroking mechanism, described stroking mechanism comprises variable piston and variable cylinder, a variable chamber is formed between the housing of described variable cylinder and variable cylinder outside, variable cylinder is connected with swash plate by swash plate link, when described operating grip swings, follow variable piston under the effect of the hydraulic oil that variable cylinder exports at slippage pump and move together.
2. servo setting control mechanism as claimed in claim 1, is characterized in that: operating grip is connected with variable piston, and described operating grip swings the movement driving variable piston.
3. servo setting control mechanism as claimed in claim 2, is characterized in that: be provided with oil duct between variable chamber and variable piston, and described repairing delivery side of pump connects oil duct, and hydraulic oil is caused variable chamber by the movement of described variable piston.
4. servo setting control mechanism as claimed in claim 3, is characterized in that: follow variable piston under the effect of described variable cylinder hydraulic oil in variable chamber and move together.
5. servo setting control mechanism as claimed in claim 1, is characterized in that: swash plate is arranged on main pump, for the hydraulic oil output quantity of the main pump of hydraulic control transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402207.1U CN204739183U (en) | 2015-06-11 | 2015-06-11 | Hydraulic transmission device's servo control with fixed set -point mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402207.1U CN204739183U (en) | 2015-06-11 | 2015-06-11 | Hydraulic transmission device's servo control with fixed set -point mechanism |
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| CN204739183U true CN204739183U (en) | 2015-11-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906064A (en) * | 2017-12-25 | 2018-04-13 | 邵阳维克液压股份有限公司 | The device and variable method for control speed of changeable constant pressure variable displacement pump variable speed |
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2015
- 2015-06-11 CN CN201520402207.1U patent/CN204739183U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906064A (en) * | 2017-12-25 | 2018-04-13 | 邵阳维克液压股份有限公司 | The device and variable method for control speed of changeable constant pressure variable displacement pump variable speed |
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