CN201096567Y - Liquid viscosity dynamometer machine - Google Patents
Liquid viscosity dynamometer machine Download PDFInfo
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- CN201096567Y CN201096567Y CNU2007200264429U CN200720026442U CN201096567Y CN 201096567 Y CN201096567 Y CN 201096567Y CN U2007200264429 U CNU2007200264429 U CN U2007200264429U CN 200720026442 U CN200720026442 U CN 200720026442U CN 201096567 Y CN201096567 Y CN 201096567Y
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- transmission shaft
- static friction
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Abstract
The utility model discloses a fluid viscous dynamometer. Loading units are arranged on a transmission shaft in a shell and are arranged on both sides symmetrically; an oil supply system is loaded for separation. Each loading unit comprises a cylinder body connected with the box body fixedly; the cylinder body is sleeved on the transmission shaft; a group of static friction plates which can slide left and right axially are imbedded in the cylinder body and are arranged along the axial direction of the transmission shaft; a group of dynamic friction plates are imbedded on the transmission shaft corresponding to the static friction plates; the static friction plates and the dynamic friction plates are in staggered and alternate arrangement; a piston is arranged in the cylinder body corresponding to the static friction plates; the piston can drive the group of static friction plates to slide. When the fluid viscous dynamometer is in use, the static friction plates and the dynamic friction plates are not contacted directly; shearing braking force is generated by the oil film formed between the static and the dynamic friction plates to change the position of the piston so that the relative position of the static and the dynamic friction plates is changed. The loading can be processed by single side separately or be processed by both sides at the same time; when the loading is processed on a low power device, the single side loading is used (the loading is close to the output shaft side); meanwhile, the lubricant and control oil are infused into the loading side; when the loading is processed on a high power device, the lubricant is infused into both loading sides and control oil pressure on both sides are adjusted to realize slow loading. The towing torque is reduced as possible on the mechanical structure so that the ideal work range of the dynamometer is enlarged as possible and the measuring range of the dynamometer is extended.
Description
Technical field
The present invention relates to the technical field in controlled loading equipemtn, is a kind of low-speed big liquid viscosity loading equipemtn, can be used for motor bracket loading test platform, engine dynamometer test and makes the occasion of other measurement of power purposes.
Background technology
The sticking dynamometer machine of liquid is to utilize liquid to glue a kind of novel power measurement arrangement that drive technology (being the HVD technology) grows up.Belong to of the application of HVD technology in another frontier, it is a kind of novel dynamometer machine, it utilizes two groups of oil-shear effects between the friction disc to produce resistance and power input is lost in the middle of the lubricating oil with the form of heat, again the circulation cooling effect by lubricating oil with heat dissipation to extraneous.Can send nominal torque or be equivalent to several times nominal torque when its principal feature is low speed or during zero-speed, moment of inertia is little, and response is fast, and the response time is no more than 200 to 300ms, is fit to dynamic test.It both had been different from HVD product in the past, be different from existing traditional dynamometer machine again, research work about this dynamometer machine, domestic research seldom, mainly concentrate on Beijing Institute of Technology, also have units such as Shanghai Communications University, hoisting machinery research institute, Shanghai Inst. of Ship Diesel Engine and Hangzhou Gear Box Factory, and the document of openly introducing this respect abroad also seldom.
Nineteen ninety-five, Beijing Institute of Technology system of vehicle transmission laboratory in power measurement arrangement, has been developed the sticking dynamometer test platform of 40kW testing table and 630kW liquid with HVD technology first Application voluntarily, is carrying out certain research aspect sticking dynamometer machine theory of liquid and the control technology.
Wherein the sticking early stage common wet clutch of dynamometer machine similar of 40kW liquid has two groups of friction discs to be in the same place by spline housing with main drive shaft and driven axle respectively, and active friction plate, can move freely on main drive shaft vertically by spline housing.On passive drum, passive drum maintains static on base by a tension-compression sensor driven friction by spline housing.Lubricating oil is entered by main drive shaft, to flowing out, forms oil film between rotating plate and driven disc from the slit between each friction disc all around, by the shear action generation braking torque of oil film; By the control oil pressure in the regulating piston cylinder, the stroke of control piston, thereby the oil film thickness of control between friction disc are finally realized the purpose of control brake moment of torsion.
The structure of the sticking dynamometer machine of 630kW liquid is designed to bilateral and loads form simultaneously, has strengthened the output torque of dynamometer machine; Electricity liquid ratio relief valve directly is designed on the dynamometer machine body, reduces the set pressure of electricity liquid ratio relief valve, adopt cut spring that friction disc is separated between active friction plate, reduced band row moment of torsion.
Comprehensive domestic and international research to the sticking dynamometer machine of liquid mainly lays particular emphasis on following several respects:
(1) sticking dynamometer machine physical construction of liquid and working mechanism research
Start with labor and studied the motionless liquid of passive part sticking dynamometer machine oil film pressure, bearing capacity and stability from hydro-viscous speed governing clutch existing and the technology comparative maturity; The lubricating oil film of having analyzed and researched is sheared the torque that produces; And carried out the design of overall design, friction pair and the piston return spring of the sticking dynamometer machine of 40kW liquid.
Document [26] is except that the oil-shear scope and the transmitting torque deviation of the sticking dynamometer machine of 40kW liquid are carried out certain research, primary study band row's torque theory: analyzed the reason that produces band row torque, and proposed to reduce method with row's torque, with friction pair external diameter and number of friction pairs two parameters Optimization of Mechanical Design research is carried out in band row torque at last; By further investigation to band row torque theory, further optimized the structure of the sticking dynamometer machine of liquid, adopted hydraulic pressure return mode and rubber cut spring to make band row torque obtain very big improvement first; Designed lubricating cooling oil road system and control oil channel system, made that the sticking dynamometer system of liquid is further perfect.
(2) sticking Dynamometer Control characteristic of liquid and controlling schemes research
Document [22] has been set up the real-time TT﹠C system based on the xPC targeted environment, utilize the supervision computer patterns to realize real-time TT﹠C system, utilize the supervision computer patterns to realize real-time control, on the sticking dynamometer machine principle control system characteristic basis of analytic liquid, adopt the multi-parameter prediction control algolithm to set up the closed-loop control system of the sticking dynamometer machine of liquid, realize permanent moment of torsion control, the dynamic control performance response is improved.
Document [28] has been set up the data acquisition system (DAS) with virtual instrument feature in conjunction with the construction of 630kW system of vehicle transmission testing bench control system on the WindowsNT system platform; The dynamic mathematical models of sticking each critical piece of dynamometer machine of high-power liquid have been set up: the kinetic model that comprises piston and platen, classics band row's torque model and output torque model based on traditional theory, the output torque model of analogy wet friction sheet, and the sticking dynamometer machine dynamic model of the liquid that on the basis of certain hypothesis, is simplified; Adopt industrial control field advanced person's Dynamic array control algorithm structure P-DMC controller on the basis of the theoretical model of the sticking dynamometer machine of analytic liquid and open loop step response experimental data, response speed is increased, but stability is poor slightly.
Sticking transmission exists three these characteristics of drive area to quote the automatic adjusting technology first to document [25] at liquid, the gain scheduling method is proposed, closed-loop control, digital PID control theory to the sticking dynamometer machine of liquid have been done preliminary research, and have designed the hardware and software circuit of controller.Effect proves that closed-loop control has reduced the HVD range of instability, has greatly improved the fluctuation of band row's torque and output torque.
Document [29] based on great number tested data, has been set up the dynamic mathematical models of the sticking dynamometer machine of liquid at the uncertainty of the theoretical model that causes owing to dynamometer machine machining precision and other factors by the method for System Discrimination; The characteristics that are nonlinear relationship to a certain degree at the sticking dynamometer machine output torque of liquid and input voltage, and simple linearization hypothesis and real system error are bigger, so carry out gamma correction, and the discharge characteristic of taking into account system and and nonlinear characteristic model is revised, through emulation and verification, this model can reflect the dynamic perfromance of real system preferably; Employing is carried out online, rolling optimization, the certain discussion of feedback correction control having carried out based on the GPC (Generalized Predictive Control) algorithm of Hammerstein model to the sticking dynamometer machine of liquid.
Summary of the invention
What the purpose of this invention is to provide a kind of new construction can realize the liquid viscosity dynamometer machine of loading continuously, can be used for motor bracket loading test platform, engine dynamometer test and make the occasion of other measurement of power purposes, purpose is to improve measuring accuracy and widen test specification as far as possible, can guarantee simultaneously steadily to load.
Its technical solution is as follows:
A kind of liquid viscosity dynamometer machine, it has following structure:
A, described liquid viscosity dynamometer machine have a housing, be provided with the transmission shaft that an end stretches out housing in the described housing, also be provided with at least two loading units in the described housing, described loading unit includes the cylinder body that is fixedly connected with casing, described cylinder body is set on the described transmission shaft, be liquid sealing structure between the appropriate section of described inner chamber of cylinder block and transmission shaft, offer the oil-in and the oil return opening that are communicated with inner chamber of cylinder block on the described cylinder body;
Be embedded with in B, the described cylinder body along the axial arranged static friction sheet group of transmission shaft, the left and right sides slippage vertically of described static friction sheet group, be embedded with the movable friction plate group corresponding to static friction sheet group on the described transmission shaft, and friction disc quiet, the movable friction plate group is interval-staggered;
Be provided with piston corresponding to the static friction sheet in C, the described cylinder body, piston offers blind hole in the side towards static friction sheet group, be provided with retracing spring in the blind hole, enclose the pressurization oil pocket that is bundled into a sealing between the opposite side of piston and the cylinder body appropriate section, described pressurization oil pocket offers hydraulic fluid port.
Adopt the dynamometer machine of said structure, in use, earlier output terminal of prime mover and transmission shaft driving coupling, then thereby prime mover can drive transmission shaft and drive the movable friction plate rotation that is inlaid on the transmission shaft, by cylinder body oil-in and oil-out lubricating oil is circulated at inner chamber of cylinder block simultaneously, even it is quiet, be full of lubricating oil between movable friction plate and lean on lubricating oil in time to take away friction the heat that is produced, can live into control oil in the pressurization oil pocket this moment, make piston promote static friction sheet group to the movable friction plate prescription to slippage, make quiet, gap between movable friction plate reduces, then this moment is quiet, oil film thickness reduces between movable friction plate, forcing static friction sheet group to increase by the moment of resistance that lubricating oil is added on the movable friction plate, is the moment of resistance size of scalable the utility model for prime mover by said method.When measuring miniwatt prime mover, only need use one or part loading unit to get final product, the cylinder body level pressurization oil pocket of each loading unit all has separately independently oil-in and oil return opening, can realize independent control, the control oil and the lubricating oil that are each loading unit can be squeezed into respectively, but can single loading again multiple-unit load simultaneously, when low-power equipment is loaded, only use single loading, this moment, the control oil of this loading unit was squeezed into lubricating oil, other loading units are in no-load running, when need were measured more powerful prime mover, the loading unit that can enable other loaded.The pressurization oil pocket pressure oil pump have variable-frequency motor to drive, can realize controlling the stepless control of oil mass, be beneficial to steady loading.
The utility model is when work, do not have directly between quiet, movable friction plate and contact, it is to produce by the oil film that forms between quiet, movable friction plate to shear damping force, cooperate with retracing spring by the oil pressure that changes in the pressurization oil pocket, thereby change position of piston and change distance between quiet, movable friction plate, change shearing moment between quiet, movable friction plate thereby promptly change oil film thickness between quiet, movable friction plate.Compare with dynamometer machine in the past, but this dynamometer machine not only can one-sided loading but multiple-unit load simultaneously, load mode is flexible, has improved the precision of Validity Test district scope and test, has widened test specification; Adopt variable-frequency motor to drive the frequency conversion step-less adjustment control that control pump is realized the control oil pressure simultaneously, rather than adjust, realize steadily loading, improved stability and precision that dynamometer machine loads with electro-hydraulic proportional valve.While the utility model also has simple in structure, convenience operation.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of lubricating system and loading system in the above-mentioned embodiment.
Embodiment
As shown in Figure 1, the utility model has a housing 2, be horizontally set with rotation axis 5 in the housing 2, rotation axis 5 is installed on the housing 2 by the bearing 11 at two ends, in the present embodiment, is arranged with left and right two loading units on the rotation axis 5, symmetrically, above-mentioned each loading unit comprises the cylinder body 3 that is fixedly connected with housing 2, is liquid sealing structure between the appropriate section of cylinder body 3 inner chambers and transmission shaft 5, offers the oil-in and the oil return opening that are communicated with inner chamber of cylinder block on the cylinder body 3; Lubricating oil enters in the cylinder body 3 by oil diverting port 12, be provided with static friction sheet group 9 in the cylinder body 3, static friction sheet 9 is by the teeth groove setting-in of its peripheral external tooth and cylinder body 3 inboards, be provided with movable friction plate group 10 corresponding to above-mentioned static friction sheet group 9 on the transmission shaft 5, movable friction plate group 10 is inlaid in the teeth groove on the transmission shaft 3 by the internal tooth on its inner periphery, the layout quiet, that movable friction plate interlocks along transmission shaft 5 axially spaced-aparts, be folded with movable friction plate between two static friction sheets promptly, or be folded with the static friction sheet between two movable friction plates in front and back; Be provided with piston 4 corresponding to the static friction sheet in the cylinder body 3, piston 4 offers blind hole in the side towards static friction sheet group 9, be provided with retracing spring 6 in the blind hole, enclose the pressurization oil pocket 13 that is bundled into a sealing between the opposite side of piston 4 and the cylinder body appropriate section, described pressurization oil pocket 13 offers pressurization hydraulic fluid port 7.The both sides loading unit is relatively independent, and control oil can be bought oil respectively, realizes one-sided loading, also can buy oil simultaneously, and bilateral loads simultaneously.
Fig. 2 shows the structure of above-mentioned embodiment lubricating system and loading system respectively.
Certainly, the utility model is not limited in above a kind of embodiment, and conspicuous variation is arranged on the basis of above-mentioned embodiment, all should belong to protection domain of the present utility model.
Claims (2)
1, a kind of liquid viscosity dynamometer machine is characterized in that:
A, described liquid viscosity dynamometer machine have a housing, are provided with the transmission shaft that an end stretches out housing in the described housing, also are provided with at least two loading units in the described housing; Described each loading unit includes a cylinder body that is fixedly connected with casing, described cylinder body is set on the described transmission shaft, be liquid sealing structure between the appropriate section of described inner chamber of cylinder block and transmission shaft, offer the oil-in and the oil return opening that are communicated with inner chamber of cylinder block on the described cylinder body;
Be embedded with in B, the described cylinder body along the axial arranged static friction sheet group of transmission shaft, the left and right sides slippage vertically of described static friction sheet group, be embedded with the movable friction plate group corresponding to static friction sheet group on the described transmission shaft, and friction disc quiet, the movable friction plate group is interval-staggered;
Be provided with piston corresponding to the static friction sheet in C, the described cylinder body, piston offers blind hole in the side towards static friction sheet group, be provided with retracing spring in the blind hole, enclose the pressurization oil pocket that is bundled into a sealing between the opposite side of piston and the cylinder body appropriate section, described pressurization oil pocket offers the hydraulic fluid port that connects pressure oil pump.
2, liquid viscosity dynamometer machine according to claim 1 is characterized in that: described pressure oil pump is furnished with variable-frequency motor and drives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200264429U CN201096567Y (en) | 2007-08-17 | 2007-08-17 | Liquid viscosity dynamometer machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200264429U CN201096567Y (en) | 2007-08-17 | 2007-08-17 | Liquid viscosity dynamometer machine |
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| Publication Number | Publication Date |
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| CN201096567Y true CN201096567Y (en) | 2008-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200264429U Expired - Lifetime CN201096567Y (en) | 2007-08-17 | 2007-08-17 | Liquid viscosity dynamometer machine |
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| CN (1) | CN201096567Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629267A (en) * | 2013-11-26 | 2014-03-12 | 江苏大学 | Energy-saving hydraulic system of liquid viscosity speed regulation clutch |
| CN103940621A (en) * | 2014-04-29 | 2014-07-23 | 广西大学 | Hydraulic disc-type dynamometer |
| CN104502111A (en) * | 2014-11-24 | 2015-04-08 | 华晨汽车集团控股有限公司 | Engine friction work analysis device and method |
| CN105209796A (en) * | 2013-04-12 | 2015-12-30 | 德纳有限公司 | Monitoring and prognostic system and method for determining a remaining useful life of lubricant in wet clutch transmissions |
| CN107956850A (en) * | 2017-12-27 | 2018-04-24 | 青岛核工机械有限公司 | A kind of adjustable antioverloading gear reducer |
-
2007
- 2007-08-17 CN CNU2007200264429U patent/CN201096567Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105209796A (en) * | 2013-04-12 | 2015-12-30 | 德纳有限公司 | Monitoring and prognostic system and method for determining a remaining useful life of lubricant in wet clutch transmissions |
| CN105209796B (en) * | 2013-04-12 | 2017-12-12 | 德纳有限公司 | Monitoring and forecasting system and method for the remaining life that determines lubricant |
| CN103629267A (en) * | 2013-11-26 | 2014-03-12 | 江苏大学 | Energy-saving hydraulic system of liquid viscosity speed regulation clutch |
| CN103629267B (en) * | 2013-11-26 | 2015-12-09 | 江苏大学 | A kind of hydro-viscous speed governing clutch energy-saving hydraulic system |
| CN103940621A (en) * | 2014-04-29 | 2014-07-23 | 广西大学 | Hydraulic disc-type dynamometer |
| CN104502111A (en) * | 2014-11-24 | 2015-04-08 | 华晨汽车集团控股有限公司 | Engine friction work analysis device and method |
| CN107956850A (en) * | 2017-12-27 | 2018-04-24 | 青岛核工机械有限公司 | A kind of adjustable antioverloading gear reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tai'an Libo Mechanical Technology Co., Ltd. Assignor: Zhang Yuan Contract fulfillment period: 2009.3.1 to 2015.2.28 Contract record no.: 2009370000017 Denomination of utility model: Liquid viscosity dynamometer machine Granted publication date: 20080806 License type: Exclusive license Record date: 20090313 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.1 TO 2015.2.28; CHANGE OF CONTRACT Name of requester: TAI'AN LIBO ELECTROMECHANICAL TECHNOLOGY CO., LTD. Effective date: 20090313 |
|
| ASS | Succession or assignment of patent right |
Owner name: LIBO HEAVY MACHINE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHANG YUAN Effective date: 20120727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120727 Address after: 271000 Tai'an Shandong hi tech Zone entrepreneurship Service Center Patentee after: Libo Heavy Machine Technology Co., Ltd. Address before: 271000 Tai'an Taishan youth Pioneer Park Daiyue Shandong Tai'an Mechanical & Electrical Technology Co., Ltd. Patentee before: Zhang Yuan |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080806 |
|
| CX01 | Expiry of patent term |