(3) summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art part, its purpose is to provide a kind of spiral bevel gear testing table of realizing becoming the gear test of loading.
For reaching above-mentioned purpose, spiral bevel gear testing table of the present invention is characterized in comprising: chamber and be contained in tested spiral bevel gear in the described chamber; The torque arm that links to each other with described tested spiral bevel gear; With the torque gauge that described torque arm links to each other, be used for writing down the various signals of described tested spiral bevel gear; The transmission case that links to each other with described torque gauge; With the wheel box that described transmission case is connected, be used to make speed governing wideer; Main motor with variable ratio frequency changer speed governing is connected with described wheel box; Have two ends and oppositely export and have the loader of big retarding ratio and auto-lock function, the one end is connected with described transmission case, and the other end is connected with described chamber; Link to each other, have the computing machine that total system is carried out program observing and controlling with described torque gauge; Actuator links to each other the instruction that receiving computer sends with described computing machine; Variable-frequence governor, an end links to each other with described actuator, and the other end links to each other with described loader, is used for the instruction of receiving actuator, thereby the loading force of loader is regulated.
Aforesaid gear testing table of the present invention, program by computer compilation realizes control and detection, when tested spiral bevel gear is placed into chamber, by torque arm the situation of tested spiral bevel gear is passed to torque gauge, torque gauge is the various signals that are used for writing down tested spiral bevel gear, link to each other with transmission case by coupling shaft again, and transmission case is to be used for keeping ratio of gear=1, it by can frequency control main motor and be used for making the wideer wheel box of speed governing to control ratio of gear=1.And the other end of transmission case is linked to each other with loader by coupling shaft again, loader provides tested spiral bevel gear by the long pass moving axis and just loads or the negative power that loads, make the tested spiral bevel gear can be, till tested spiral bevel gear damages or reaches fatigue lifetime from the stressed reception test of positive and negative both direction.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(5) embodiment
As shown in Figure 1, spiral bevel gear testing table of the present invention comprises that machinery and electric two large divisions form.
Mechanical part comprises: chamber 1, tested spiral bevel gear 2, also can improve the torque arm 3 of system loads performance once accurate Calculation, be used for writing down the torque gauge 4 of above-mentioned tested spiral bevel gear 2 various signals, the transmission case 6 that keeps ratio of gear=1, be used to make the wideer wheel box of speed governing 7, has the variable ratio frequency changer speed governing to adapt to the main motor 8 of different rotating speeds requirement, have two ends and oppositely export and have the loader 10 of big retarding ratio and auto-lock function, its connected mode is: the chamber 1 of being tested spiral bevel gear 2 connects torque gauge 4 by torque arm 3, connect transmission case 6 by coupling shaft 5a again, be connected with wheel box 7 again, connect main motor 8 at last, the other end of transmission case 6 connects a loader 10 by coupling shaft 5b, be connected with chamber 1 by long pass moving axis 9 again, form a closed system by power circuit, the ratio of gear of whole closed system=1, here it is to be noted ratio of gear=1st, keep the philosophy of the normal operation of total system, a law notion of knowing for those of ordinary skill in the art.
Electric part, promptly TT﹠C system partly comprises: have the computing machine 12 that total system is carried out program observing and controlling; Actuator 13, the instruction that receiving computer 12 sends; Variable-frequence governor 14 is used for the instruction of receiving actuator 13, thereby the loading force of loader 10 is regulated.Each parts in the electric part all connect successively by electric wire 11.
Torque gauge 4 in the mechanical part and loader 10 are connected respectively on the computing machine 12 and variable-frequence governor 14 in the electric part by electric wire 11, like this after torque gauge 4 provides various signals, carry out process analysis and judge by computing machine 12, computing machine 12 is passed to actuator 13 to the signal of judging, send instructions to variable-frequence governor 14 by actuator 13, change loading force by variable-frequence governor 14, thereby finish observing and controlling mechanical part to loader 10.To be described in detail the combine principle of operation and the flow process that the computing machine in the electric part carries out measurement and control program to total system of the mechanical part of gear testing table of the present invention and electric part below.
When tested spiral bevel gear 2 is placed into chamber 1, by torque arm 3 situation of tested spiral bevel gear 2 is passed to torque gauge 4, torque gauge 4 is the various signals that are used for writing down tested spiral bevel gear 2, link to each other with transmission case 6 by coupling shaft 5a again, and transmission case 6 is to be used for keeping ratio of gear=1, it by can frequency control main motor 8 and be used for making the wideer wheel box of speed governing 7 to control ratio of gear=1.The other end of transmission case 6 is linked to each other with loader 10 by coupling shaft 5b, loader 10 provides by 9 pairs of tested spiral bevel gears 2 of long pass moving axis and just loads or the negative power that loads, make the tested spiral bevel gear 2 can be, till tested spiral bevel gear 2 damages or reaches fatigue lifetime from the stressed acceptance test of positive and negative both direction.Torque gauge 4 is the parts in the TT﹠C system, torque gauge 4 spreads out of torque signal and gives computing machine 12, comprise moment of torsion, rotating speed, temperature, acceleration and working time, parameters such as cycle index, then computing machine is carried out measurement and control program, shown in Fig. 3 process flow diagram, computer installation torque sensor constant S1 at first, and moment of torsion returned to zero behind the S2, according to testing requirements parameter is set, parameter comprises above-mentioned moment of torsion, rotating speed, temperature, acceleration and working time, cycle index etc., and these parameters are loaded S3, then computing machine 12 will be measured the moment of torsion of current tested spiral bevel gear, rotating speed, temperature, parameter S such as acceleration 4, these parameter signals convert the language that calculates function identification to by the A/D program, by the analyzing and processing of computing machine 12, the parameter of the above-mentioned testing requirements setting of reference increases or reduces the adjusting S5 of loading force, and sends instructions to variable-frequence governor 14 by actuator 13 again, by the loading force of variable-frequence governor 14 changes, thereby finish basic observing and controlling process to loader 10.
After the step of above-mentioned adjusting loading force S5, will be according to the set operation time parameters of testing requirements among the step S3 to judging S6 the working time of this operating mode, if above-mentioned judged result S6 is words not, be that this operating mode does not arrive working time, then come back to the measurement that step S4 carries out each parameter, if above-mentioned judged result S6 is to carry out that then all are respectively organized operating mode and whether moved the judgement S7 that finishes.
Above-mentioned judged result S7 is, then whole observing and controlling process finishes, otherwise the computer measurement and control program will be got back to step S3 and by testing requirements each parameter of next group operating mode is set and load.
Pilot system is a closed system, and the loader 10 that is connected in series in closed-loop is oppositely exported owing to have two ends, and big retarding ratio and auto-lock function are arranged, therefore by the length of its conduction time and the size of frequency, the size of moment of torsion in the feasible system.When changing its sense of rotation, can realize negative the loading.
System of the present invention adopts the computing machine centralized control, integrates survey, controls, and can adapt to the needs of various operating condition of test.Spiral bevel gear testing table of the present invention has adopted the frequency control driving simultaneously, and is rational in infrastructure, easy to use.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, under the situation that does not break away from spirit of the present invention, also can make the variation and the modification of various equivalences, therefore, as long as variation, the modification to the foregoing description all will drop in the scope of claims of the present invention in connotation scope of the present invention.