CN2466410Y

CN2466410Y - Hydraulic swing motor

Info

Publication number: CN2466410Y
Application number: CN 01202810
Authority: CN
Inventors: 傅永森
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-01-05
Filing date: 2001-01-05
Publication date: 2001-12-19
Anticipated expiration: 2011-01-05

Abstract

The utility model relates to a hydraulic swing motor. The inner part of a casing of the motor is provided with two parallel oil cylinders in which two plungers respectively provided with a gear rack is arranged. The gear rack is meshed with a gear on a gear shaft. When the two oil cylinders supply oil in a commutation mode, the plungers drive the gear shaft to obtain a definite positive direction and reverse direction swing angle. The utility model can be used as a power device to drive a piece which is driven to be driven in a swing mode. The utility model has the advantages of simple structure, easy fabrication, low cost, and small axial dimension. The utility model can replace a hydraulic motor to be used for the drive in a swing mode.

Description

A kind of hydraulic pressure rotary actuator

The utility model relates to oil hydraulic motor, particularly the hydraulic pressure rotary actuator.

Existing oil hydraulic motor is continuous rotational structure, just seem inapplicable when being used in the swing transmission, as the back-up tong of hydraulic power plier, need drive during work that jaw plate frame is forward and reverse to turn an angle, produce the pre-action that clamps tubing string, the prior art fluid motor-driven, there is following problem: the one,, itself does not have angle limits oil hydraulic motor, can only establish mechanical stop mechanism in addition and control corner, in fast rotational, produce big impact force, easily break part; The 2nd,, the oil hydraulic motor breakout pressure is bigger, the time have the lag behind abnormality of main pincers action of back-up tong to occur; The 3rd,, the oil hydraulic motor axial dimension is big, be used on the back-up tong and can only laterally install, the umbrella gear transmission is because the back-up tong jaw plate frame can not accurately be located, engagement is not good, break down easily, influence the back-up tong proper functioning: the 4th,, by contrast, the hydraulic rotating motor is used to swing transmission, is used to swing transmission cost of production height than hydraulic pressure rotary actuator simple in structure.

The purpose of this utility model is exactly to release a kind of universal hydraulic pressure rotary actuator that is specifically designed to the swing transmission, and its pendulum angle can be adjusted arbitrarily, and is simple in structure, easy to manufacture, axial dimension is little, and cost of production is low, is specially adapted to the driving of hydraulic power plier back-up tong.

The technical solution of the utility model is: the hydraulic pressure rotary actuator is made up of major parts such as housing, plunger, gear shaft, bearing, hydraulic fluid port end cap, jackscrew end cap and jackscrews, two parallel oil cylinders are arranged in the housing, two plungers that have tooth bar are housed in the oil cylinder, plunger end has one section buffering inner cylindrical surface, with the oil cylinder vertical orientations gear shaft is housed between the two parallel oil cylinders, its gear teeth are meshed with tooth bar on the plunger, two oil cylinders, one end charge of oil mouth end cap, the hydraulic fluid port end cap has one section buffering external cylindrical surface, and hydraulic fluid port is connected with oil hydraulic circuit; Two oil cylinder the other ends dresses jackscrew end cap is equipped with the jackscrew of regulating corner on the end cap, there is bearing support location at the gear shaft two ends, and its spindle nose can link to each other by rocking arm is parallel with transmission part, four legs is arranged below the housing, in screw is arranged in order to fixing the utility model.

Enforcement of the present utility model, for oil hydraulic motor increases new varieties, simple in structure with it, easy to manufacture, with low cost, axial dimension is little, be installed on the occasion of swing transmission as a kind of general part, particularly, can not only improve its technical performance, also can significantly reduce production costs as the hydraulic power plier back-up tong actuator of various models.

Accompanying drawing has provided embodiment of the utility model.

Fig. 1 is the utility model structural representation;

Fig. 2 is A-A sectional view of Fig. 1.

Below in conjunction with accompanying drawing the utility model is elaborated.

As shown in Figure 1 and Figure 2, the hydraulic pressure rotary actuator is made up of major parts such as housing 3, plunger 5, gear shaft 1, hydraulic fluid port end cap 16, jackscrew end cap 7, jackscrew 8 and 12, bearing 2 and bearings 4, two

parallel oil cylinders

11 and 14 are arranged in the housing, between two oil cylinders with oil cylinder vertical orientations sprocket drive spindle 1, two identical plungers 5 are arranged in the oil cylinder, having tooth bar 9 on the plunger is meshed with gear on the gear shaft, the gear shaft two ends have bearing 2 and 4 to support the location, and axle head has the spindle nose 17 can be by the parallel connection with transmission part of rocking arm.Oil cylinder one end is by two hydraulic fluid port end cap 16 shutoff, and the oil cylinder the other end is equipped with jackscrew 8 and 12 by two jackscrew end cap 7 shutoff on the jackscrew end cap.The oil outlet end that advances of two plungers 5 has one section buffering inner cylindrical surface 10, one section buffering external cylindrical surface 13 is arranged on the two hydraulic fluid port end caps 16, when advancing to buffering external cylindrical surface 13, plunger enters buffering during inner cylindrical surface 10, because gap, inside and outside cylndrical surface is very little, hydraulic oil in the plunger end annular space forms a lubricating pad, between inside and outside

cylndrical surface

10 and 13, clamp-on oil return circuit again, thereby slow down the bump between plunger and the end cap.Lower housing portion has four legs 6, in screw is arranged, as installing and fixing the utility model.

When oil cylinder 11 oil-feeds, during oil cylinder 14 oil returns, the gear shaft clockwise direction turns over several angle, otherwise, oil cylinder 14 oil-feeds, during oil cylinder 11 oil returns, gear shaft turns over several angle counterclockwise; When only being screwed into jackscrew 8, the clockwise corner of gear shaft reduces, and when only being screwed into jackscrew 12, gear shaft is counterclockwise, and corner reduces; Motionless when the plunger of oil cylinder 14, when the past hydraulic fluid port end cap direction of the plunger of oil cylinder 11 was moved a tooth installation, plunger stroke reduced a tooth pitch, the forward and reverse minimizing of gear shaft corner α angle.

Z is the gear shaft gear teeth numbers of teeth in α=360 °/Z formula.

When the utility model parameter immobilizes, change with transmission part between link to each other rocking arm length the time, also can change the corner amplitude of transmission part.In other words,, select suitable rocking arm length and adjust suitable the utility model parameter, can obtain satisfied swing corner by the pivot angle requirement of transmission part.

Claims

1. hydraulic pressure rotary actuator, contain major parts such as housing, plunger, gear shaft, bearing, hydraulic fluid port end cap, jackscrew end cap and jackscrew, it is characterized in that: two parallel oil cylinders are arranged in the housing, two plungers that have tooth bar are housed in the oil cylinder, with the oil cylinder vertical orientations gear shaft is housed between the two parallel oil cylinders, its gear teeth are meshed with tooth bar on the plunger.

2. a kind of hydraulic pressure rotary actuator as claimed in claim 1 is characterized in that: the jackscrew of regulating pendulum angle is arranged on the jackscrew end cap.

3. a kind of hydraulic pressure rotary actuator as claimed in claim 1 is characterized in that: plunger end has one section buffering inner cylindrical surface, and one section buffering external cylindrical surface is arranged on the hydraulic fluid port end cap.