CN2037781U

CN2037781U - Hydraulic motor with a radiation-type rotor

Info

Publication number: CN2037781U
Application number: CN 88209331
Authority: CN
Inventors: 邱作儒
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-08-03
Filing date: 1988-08-03
Publication date: 1989-05-17

Abstract

The utility model discloses a hydraulic motor with a radiation-type rotor, belonging to the field of manufacturing the hydraulic motor. The utility model is characterized in that which comprises a front cylinder cap, a back cylinder cap, a bearing, an oil cylinder casing, a piston group, a bent shaft and an oil cylinder body. The piston group is connected with the bent shaft; the oil cylinder body is positioned in the oil cylinder casing and connected with the bent shaft and the oil cylinder casing; the bearing is connected with the front and back cylinder caps. Therefore, the device has the advantage that the radial dimension of an axial piston motor is good for running with high speed and also has the advantages of low speed and larger torque of a radial piston motor. The utility model has the advantages of simple structure, small size, light weight, low cost and easy manufacturing. The efficiency is high, the operating range is wide, and the stepless speed change and the variate can be easily realized.

Description

Hydraulic motor with a radiation-type rotor

The utility model belongs to oil hydraulic motor and makes the field.

Prior art in the utility model prior art field is: 1, gear motor, this machine are the little simple oil hydraulic motors of output torque, and minimum speed is galloping when 150-250rpm is following.2, sliding-vane motor, this machine are to make according to the opposite working principle of balanced impeller pump, compress track ring for making blade, have used back-pressure structure, also need consider the axial seal of both ends of the surface in addition.3, piston motor, this machine has radial and axial branch, and structure respectively has characteristics, but its complex structure.4, low speed high torque motor, can be divided into: star low-speed big torque motor and multiple-pass low-speed big torque motor, though these two kinds of types have piston crank mechanism, wavy track ring, but its complex structure, processing difficulties, and flow distribution apparatus on axle, body is big and heavy.

Purpose of design of the present utility model is: at deficiency of the prior art, design a kind of characteristics that not only have the radial piston hydraulic motor low-speed big, and have the radial pattern rotor oil hydraulic motor that radial dimension is little, simple in structure, volume is little.

Design proposal of the present utility model is: radial pattern rotor oil hydraulic motor is made up of front end housing, bearing, cylinder shell, piston set, bent axle, cylinder cap, cylinder body and other standard piece and fastening piece.Piston set is to be to intersect by bent axle between the piston of some logarithms and piston set to connect, and the angle of intersecting equates.Each piston in the piston set is two working rooms, that is to say that in fact each piston has played pair of pistons---i.e. the effect of two pistons.Because each piston all has two independently working rooms.Piston set adopts with bent axle and is connected movingly, and bent axle is made up of main shaft and crank.Main shaft and crank are an integral body.Bearing adopts stationary fit to be connected with the front and back cylinder cap, and its main purpose is the rotation of supporting cylinder body.The front and back cylinder cap is shaped on main shaft axis hole, bearing shaft and a button, the main shaft axis hole is radius system with the spindle axis, and the main shaft axis hole of back cylinder cover is a through hole, a bearing shaft and a button are then with cylinder body shaft center line system, and the purpose of a button design is the concentricity that guarantees cylinder body and cylinder body rotation centerline.The disc that is front end housing, cylinder shell and back cylinder cover adopts bolt, packing ring to be connected as a single entity, and cylinder cap is done at the uniform velocity than rotation in cylinder shell by bearing supporting piston group and cylinder body before and after its objective is.Be shaped on filler opening, road and oil outlet, road on the cylinder shell, and on the cylinder shell advance oil drain out, that the road can be divided into is some right, oil-feed and oil extraction when being used for piston set and cylinder body and doing at the uniform velocity than rotation in cylinder shell.Cylinder body is disc and is positioned at cylinder shell and adopts and to be connected with bent axle, cylinder shell movingly, cylinder body employing integrated type or segment bounds, and the split type cylinder body studs with whole cylinder sleeve.But on the cylinder body of big-and-middle-sized oil hydraulic motor,, proper functioning under the situation of big pressure can born with the protection cylinder body owing to hydraulic pressure studs with cylinder sleeve greatly.Its working principle is with reference to Figure 10 fundamental diagram (double-piston four working rooms), piston B is at initial point among Figure 10, piston A is in the working position, high pressure oil enters oil duct 21 by filler opening 20, be pressed into the end face 23 that working room 22 acts on piston A, produced moment of torsion and forced crankshaft rotating (other end of piston is in the oil extraction situation), this moment, the end face 24 of piston B was connected with oil input channel as figure II.Crank is its power output shaft.After piston set, oil suction chamber end are subjected to high pressure oil, when throw crank, cylinder body rotate, form the cavity that four cylindrical cycles change between piston set, cylinder body and the cylinder shell in cylinder shell.When certain end face of piston and cavity cylindrical overlap, the top dead center 25 that is called piston, the other end then is a lower dead center 26, at this moment, the top dead center cavity minimum of this piston levels off to zero, lower dead center cavity maximum, two active chambers all are in closed state.But another piston is in the working position shown in figure I.When the piston of bent axle, piston set, when cylinder body continues rotation, lower dead center active chamber 26 is connected shown in figure II with oil drain out, the beginning oil extraction, cavity diminishes gradually, arrive top dead center until piston, cavity levels off to zero, and oil extraction is come out, and finishes a circulation.Piston in the piston set is many more, and active chamber is many more, and each active chamber is all finished above-mentioned circulation on certain position, as shown in figure 10.

The utility model compared with prior art, it is little not only to have the axial piston motor radial dimension, the characteristics of suitable high speed operation, and one be the advantage with radial plunger piston motor low-speed big, the 2nd, have simple in structure, volume is little, in light weight, characteristics that the easy processing cost is low, the 3rd, the high-efficient operation scope realizes stepless change and variable extensively, easily.

Description of drawings:

Fig. 1 is the general assembly schematic representation of radial pattern rotor oil hydraulic motor.

Fig. 2 is the front end housing schematic representation of radial pattern rotor oil hydraulic motor.

Fig. 3 is the cylinder shell schematic representation of radial pattern rotor oil hydraulic motor.

Fig. 4 is the piston schematic representation of radial pattern rotor oil hydraulic motor.

Fig. 5 is the bent axle schematic representation of radial pattern rotor oil hydraulic motor.

Fig. 6 is the back cylinder cover schematic representation of radial pattern rotor oil hydraulic motor

Fig. 7 is the cylinder body schematic representation of radial pattern rotor oil hydraulic motor.

Fig. 8 is the gland schematic representation of radial pattern rotor oil hydraulic motor.

Fig. 9 is three groups of piston schematic representation of radial pattern rotor oil hydraulic motor.

Figure 10 is the working principle schematic representation of radial pattern rotor oil hydraulic motor.

The drawing reference numeral explanation:

1-cylinder body fastening screw trip bolt, 2-shell fastening screw trip bolt

3-pad, 4-back cylinder cover

5-bearing, 6-cylinder body (cylinder body)

7-piston set, 8-cylinder shell

9-bent axle, 10-front end housing

11-oil sealing (seal ring), 12-gland

13-gland screw, 14-pad

15-bearing shaft, 16-spindle hole

17-button 18-main shaft

19-crank, 20-filler opening

21-oil duct, 22-working room

The end face of end face 24-piston B of 23-piston A

25-piston top dead center, 26-piston lower dead center

Embodiment:

Fig. 1-Fig. 9 is a kind of embodiment of radial pattern rotor oil hydraulic motor.

The enforcement of radial pattern rotor oil hydraulic motor: 1, component processing is with reference to Fig. 1-shown in Figure 9, the front and back cylinder cap (Fig. 2, Fig. 6) adopt iron casting after, first roughing bearing shaft, a button, fine finishing then, last boring spindle hole.Bearing adopts standard piece.Piston (Fig. 4) adopts spheroidal graphite cast iron or alloy aluminum casting, finish grindes after the first roughing, and boring crank hole in the coordinate boring then, last surfaces nitrided or hydrogenation treatment is produced with special device during batch process.Cylinder shell (Fig. 3) adopts spheroidal graphite cast iron, first roughing, correct grinding then.Bent axle (Fig. 5) adopts magnesium iron casting or Alloy Constructional Steel to forge, first roughing, and moulding is finish grinded after adopting the broken ignition technique of carburizing in the surface.Cylinder body (Fig. 7) adopts cast steel or magnesium iron casting, bore hole, grinding are finish grinded in elder generation's roughing then, fine finishing again after the split type combination, surfaces nitrided or hydrogenation, phosphatization are handled standard piece outsourcings such as other oil resistant rubber self-tightening oil seal.2, assembling gets final product with reference to accompanying drawing and specification the 5th part.

Claims

1, a kind of radial pattern rotor oil hydraulic motor is characterized in that being made up of front end housing 10, bearing 5, cylinder shell 8, piston set 7, bent axle 9, back cylinder cover 4 and cylinder body 6.Its piston set 7 adopts with bent axle 9 and is connected movingly, cylinder body 6 is cylindrical and be positioned at cylinder shell 8 and adopt and be connected with bent axle 9, cylinder shell 8 movingly, 5 on bearing and front and back cylinder cap (10,4) connect.

2, radial pattern rotor oil hydraulic motor according to claim 1 is characterized in that: cylinder body 6 is integrated type or split type.

3, radial pattern rotor oil hydraulic motor according to claim 2 is characterized in that: be coated with whole cylinder sleeve in the split type cylinder body.

4, radial pattern rotor oil hydraulic motor according to claim 1 is characterized in that: piston set 7 is some logarithms, and is the isogonism interconnection by bent axle between the piston of piston set.

5, radial pattern rotor oil hydraulic motor according to claim 4 is characterized in that: each piston in the piston set 7 is two working rooms.

6, radial pattern rotor oil hydraulic motor according to claim 1, it is characterized in that: front and back cylinder cap (10,4) be shaped on main shaft axis hole 16, bearing shaft 15 and a button 17, the main shaft axis hole is radius system with the spindle axis, and a bearing shaft and a button are then with cylinder body shaft center line system.

7, radial pattern rotor oil hydraulic motor according to claim 6, it is characterized in that: bent axle 9 is made up of main shaft 18 and crank 19, and main shaft and crank are an integral body.

8, radial pattern rotor oil hydraulic motor according to claim 1 is characterized in that: be shaped on filler opening, oil input channel on the cylinder shell 8, oil drain out, oil expulsion channel.

9, radial pattern rotor oil hydraulic motor according to claim 8 is characterized in that: enter oil drain out, road on the cylinder shell 8, it is some right to be divided into.