Mbili gear aina involute nje gear motor

创建于05.16

(1) Mota wa gear ya gear ya involute ya nje ya gear mbili

① 固定间隙渐开线外齿轮电机图 f 显示了固定间隙渐开线外齿轮电机的结构。齿轮两侧的侧板由高质量的碳钢 08F 制成，表面上有 0.5-0.7mm 厚的磷青铜烧结层。侧板仅具有耐磨性，没有端间隙补偿功能。固定间隙可以减少摩擦扭矩并改善起动性能，但容积效率较低。中国制造的 Cm-f 齿轮电机就是这种结构。其额定压力为 14MPa，排量为 11-40ml / R，扭矩为 20-70n · m，转速为 1900-2400r / min。

② Involute external gear motor with automatic axial clearance compensation figure g shows the structure of involute external gear motor with automatic axial clearance compensation. Sealing rings 1-4 are arranged at the outer ends of shaft sleeves 9 and 10, and the central sealing ring 1 surrounds two bearing holes, forming an "8" shaped area A1 with contraction in the middle. Because area A1 is connected with oil drain hole 14 through two bearings, the pressure in area A1 is equal to that in oil leakage chamber. The side sealing rings 2 and 3 are symmetrically arranged on both sides of the sealing ring 1 (the sealing rings 2 and 3 each have a length that directly contacts with the sealing ring 1), forming diamond shaped areas A2 and A3 respectively. A2 is communicated with the oil inlet chamber 6 through channel 5, and A3 is communicated with the oil return chamber 7 through channel 8. The outer sealing ring 4 is also arranged in a diamond shape, surrounding the sealing rings 1, 2 and 3 (there are two lengths on the sealing ring 4, which are in direct contact with the sealing rings 2 and 3 respectively). Because both sides of the sealing rings 2 and 3 are in direct contact with the sealing rings 1 and 4 respectively, two areas A4 and A5 are formed in the surrounding ring of the sealing ring 4. Due to leakage and oil leakage, the pressure in A4 and A5 is very close to the pressure in the high pressure chamber power. The sealing ring 4 is clamped between the housing 12 and the front cover 11 (rear cover 13), the sealing ring 1 is clamped between the shaft sleeve and the front cover (rear cover), and the parts of the sealing rings 2 and 3 close to the sealing ring 4 are kept between the housing and the front cover (rear cover). All sealing rings are embedded in the grooves of the front cover (rear cover). The parts close to each other can be directly contacted to simplify the processing and assembly process and reduce the cost.

③ Figure h na figure I dišow the structure of the gear motor with automatic compensation of both axial and radial clearance na the force on the gear. The shell 9 of the motor is made of seamless steel tube. The tooth tips of gears 1 na 11 are not in contact with the shell, but are directly exposed to high-pressure oil. They only contact with the radial clearance sealing block in a small range (two teeth) near the low-pressure area. The radial clearance sealing block can automatically compensate the radial clearance. When the motor rotates in the opposite direction, the radial clearance sealing block plays the same role. The motor's floating sleeve 8 na 12 (also used as needle roller bearing seat) can be used for pressure compensation of axial clearance. The function of O-ring is to limit the low pressure area in a very small range from the axial direction, na also limit the pressure surface on the back of the shaft sleeve to achieve the pressure balance of the shaft sleeve. When the motor rotates in the opposite direction, the O-ring seal plays the same role.

When the motor has not been put into operation, the radial seal blocks 2 and 2 'are respectively close to the gear under the action of the spring plates 3 and 3' (Fig. h). When the high-pressure oil is fed into the gear motor from the right side (Fig. I), the sealing block 2 is out of contact with the gear under the action of the high-pressure oil inside. At this time, only the sealing block 2 'in the low-pressure chamber plays a sealing role. In addition to the low pressure cavity and the transition zone between the sealing block 2 'and the gear, the rest of the gear and the outside of the sealing blocks 2 and 2' are soon under the action of high pressure liquid. At this time, the inner and outer sides of the sealing block 2 are all under the action of high-pressure liquid (Fig. J), so the hydraulic pressure acting on the sealing block 2 is actually balanced. Although there is a spring plate acting on the outer side, because the spring force is very weak, the tight force on the gear is very small. On the contrary, due to the action of high pressure oil on the outside of the sealing block 2 ', the pressing force is greater than the reverse thrust (the reverse thrust is equal to the sum of the hydraulic pressure in the transition zone and the hydraulic pressure in the low pressure chamber). The sealing block 2' contacts the gear tightly and keeps the best radial clearance. The larger the pressure difference is, the more reliable the sealing function of the sealing block is. Under the action of the hydraulic torque formed by the pressure difference △ p between the inlet and outlet, the two gears drag the load to rotate in the direction shown in Fig. I. When the motor reverses, the left side of the motor is a high-pressure cavity, and the right side is a low-pressure cavity. The sealing block 2 'loses its sealing function. Under the action of hydraulic pressure, the sealing block 2 tightly contacts the gear teeth near the low-pressure cavity, seals the low-pressure area, and forms a transition area, so as to ensure that the performance of the motor in reverse rotation is exactly the same as that in forward rotation.

I motor ha le seguenti caratteristiche strutturali.

a. Ngoba inani elikhulu lamazinyo emotor, kukhona kuphela amazinyo amabili axhumene phakathi kwe-radial clearance seal block kanye negear, futhi indawo yokudlula incane kakhulu (kukhona amazinyo amabili kuphela), futhi ubude be-arc bendle yokudlula bujolise eduze kwenode ngangokunokwenzeka, ngakho umphakathi we-corner we-low pressure zone uvinjelwe endaweni encane kakhulu, futhi i-O-ring isetshenziselwa ukuvinjwa nokuvikela phakathi kwe-seal block, shaft sleeve kanye ne-front cover (back cover), kanti ingxenye esele ye-ring ivaliwe. Ngakho-ke, indawo yokuhlangana phakathi kwe-shaft sleeve negear ingaklanywa ibe ncane kakhulu (i-shaft sleeve iyasikwa, bheka Fig. h). Ngale ndlela, emgqeni we-axial kanye ne-radial, indawo yokuhlangana ye-friction iyancipha, ukusebenza kwemishini kanye ne-output torque kuthuthukiswa, futhi ukusebenza kokwethula kuthuthukiswa.

b. Ngoba iningi le-circumference ye-gear likhulu ngaphansi kwengcindezi ephezulu (Fig. I), umthwalo we-radial we-bearing ye-gear uncishisiwe kakhulu, ngakho-ke i-friction torque ye-bearing incishisiwe kakhulu, i-output torque inyukile, futhi umehluko wengcindezi yokwethula △ P uncishisiwe. Izici zokuqala zithuthukisiwe futhi impilo yesevisi ye-bearing kanye ne-motor inyukile.

c. I-shell ye-seamless steel tube engekhohliwe ingasetshenziswa kumotor. Akukhona kuphela ukuthi ingaphakathi aludingi ukucutshungulwa, kodwa futhi ipayipi lesitayela esiyindilinga linokucindezela okuhle futhi alilula ukujolisa, okungathuthukisa ingcindezi yokusebenza ye-motor.

d. I-bolt 6 (Fig. h) ehlanganisa i-front cover, i-back cover kanye ne-housing idlula ngaphakathi kwe-housing.

E. kuhlanganiswe nezinsiza zokuhambisa ezikhaleni zombili ze-gear, izinsiza zokuhambisa ezijulile zifakwe nasezikhathini zokuphuma, ngakho-ke ukuphumayo kwe-shaft kungabamba amandla athile e-radial, okwenza kube ngcono ukuhambisana kwe-gear motor.

f. I-ntlawulo ye-tip ye-general gear motor ichazwa ngezinto eziningi, ezifana nokunemba kokwenziwa kwe-gear shaft, shaft sleeve, bearing clearance kanye nesikhala se-shell hole, kanye nephutha lokufaka le-center distance, njll. I-gear motor enesikhala se-radial seal block idlula lezi zinkinga. Ngoba i-radial clearance seal block iyaphumula kwi-shell futhi icindezelwe kwi-floating shaft sleeve (Fig. I) kanye ne-gear outer circle ngengcindezi ye-oil, isikhala phezulu kwe-gear sithonywa kuphela isikhala phakathi kwe-floating shaft sleeve phezulu kwe-gear kanye ne-needle roller bearing, okukhululekile ukukulawula. Ngale ndlela, inani elingcono lesikhala lingatholwa. Uma i-seal block igugile, ingazikhokhela ngokuzenzakalelayo ngaphansi kwesenzo sengcindezi ye-oil, ukuze kufezwe ukusebenza kahle okuphezulu kwe-volumetric, futhi ngokufanele kuthuthukiswe i-starting torque kanye nokusebenza kwe-low-speed.

g. Ibhlogo yokuhlukanisa ye-radial ye-cavity ye-low pressure ye-motor iyashintsha ngemva kokucindezelwa. Ngale ndlela, umphumela wokuhlukanisa ongcono utholakala ngaphansi kwengcindezi ephezulu, futhi kungatholwa inani elincane lokuhlinzeka kwe-radial, kuyilapho i-floating shaft sleeve ingafeza ukuhlinzeka kwe-axial, ngakho ingasetshenziswa ngenani eliphezulu lokucindezela.

h. Iziqhu zegear zomshini ziqhuqhuzi eziqondile nezihlanganisiwe. Iziqhuzi ezihlanganisiwe zisebenzisa i-helix angle ye-2 ° 39 ', ethuthukisa ukuzinza kokusebenza futhi yehlisa umsindo.

Die bewertete Arbeitsdruck des Getriebemotors beträgt 17Mpa, und der volumetrische Wirkungsgrad kann 95% erreichen.

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