CN2231336Y

CN2231336Y - Hydraulic decelerating machinery

Info

Publication number: CN2231336Y
Application number: CN 95212437
Authority: CN
Inventors: 王海鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-08
Filing date: 1995-06-08
Publication date: 1996-07-17
Anticipated expiration: 2005-06-08

Abstract

The utility model relates to hydraulic decelerating machinery which is the technical proposal suggested for obtaining the drive with high power and low rotating speed acquired by the way that a bent shaft can be driven by using three to four swing type single-action push action cylinders. A dispenser can implement distribution and control of pressurizing oil supply and decompression to every swing type single-action push action cylinder. Each oil pump can be driven by a bevel gear drive box with a plurality of output shafts in a combined way. The device can overcome the defects of gear speed reduced drive, can exert the special ability of hydraulic drive, can provide a new drive mode to large and medium-sized low speed and large torque machinery and mines.

Description

A kind of hydraulic pressure slows down mechanical

The utility model relates to a kind of hydraulic pressure deceleration machinery, belongs to movably multicylinder hydraulic field of mechanical technique of cylinder.

Industrial operations often need a kind of low speed and large torque driving device, be generally the combination of motor and gear reduction unit, this mechanicalness noise is big, gear life is short, compare under the harsh conditions at operating condition especially, the defective of this conventional driving mode is particularly evident, for example lapping machine is exactly an example, especially the load variations of this class work mechanism is big and the drive unit speed ratio is unadjustable in addition, so must select for use more powerful motor to avoid burning motor when loading greatly, this causes the equipment investment expense to increase again and the energy consumption waste.Hydraulic machinery has performance characteristic such as low-speed big and overload protection congenitally, but do not have as yet so far a kind of can be as the practical drive unit of high-power slow-speed of revolution continuous operation.

The purpose of this utility model is to disclose a kind of hydraulic pressure deceleration machinery, can substitute the drive unit of gear reduction unit as high-power slow-speed of revolution Work machine.

Task of the present utility model realizes by following scheme: a hydraulic machinery that comprises the oil pump oil cylinder, its do-part is that an oil of being made up of 3 or 4 single-acting push action cylinders and bent axle drives the speed reducer main frame, the fixed pin shaft of afterbody earrings on body of each oil cylinder is connected with body, constitute pendulum piston type machinery, described oil cylinder connects with corresponding oil pump pressure duct respectively through high pressure hose, also be provided with a distributor, be provided with draining valve in this distributor, be connected with each oil pump pressure duct respectively, its oil extraction end is connected with a pressure release collection chamber on the distributor, the valve mandril of this draining valve is by a corresponding cam drive that is provided with, the coaxial camshaft that is arranged at of each cam, the bent axle that this camshaft and described oil drive the deceleration main frame is in transmission connection with speed.

After adopting technique scheme, oscillating oil cylinder drives bent axle output low rotation speed large torque power, and the setting of heavy wool cylinder and corresponding distributor can make crank-driven avoid the lower dead centre district, required hydraulic unit all has normal component optional except that distributor in the device, and hydraulic control system is very simple, thereby make this hydraulic machinery can give full play to hydraulicdriven inherent characteristics, avoid the high difficulty of manufacturing process of components level again, alternative high-power gear reducer is used for mine and big-and-middle-sized slow-speed of revolution equipment.

Below in conjunction with drawings and Examples the utility model is specified:

Fig. 1, be the hydraulic retarder structural scheme of mechanism.

Fig. 2 and Fig. 3 are that oil drives deceleration main machine structure schematic representation.

Fig. 4, be dispensing arrangement figure.

Fig. 5, be the cam schematic representation.

Fig. 6, be high pressure oil pump combination drive sketch.

Oil pump among Fig. 1 (1) is by motor driving, and its pressure duct (2) one ends connect with an oily corresponding single-acting push action cylinder (5) that drives in the deceleration main frame (4) through flexible pipe (3), the other end and an interior corresponding draining valve (8) connection that is provided with of distributor (7).Main frame (4) inner cylinder (5) is provided with 3 to 4, and they are with afterbody earrings and body supporting, and piston rod is connected with bent axle (6), constitutes pendulum piston type machinery.The valve mandril of the interior draining valve of distributor (7) (8) is connected with cam (9), and camshaft is in transmission connection with speed with the bent axle (6) of main frame (4) again, for example shaft coupling transmission, and speed ratio is 1 gear transmission or chain-driven.Main frame is provided with the driving dead point that 3 or 4 swing cylinders can effectively be avoided the bent axle transmission.Utilize distributor can make each oil cylinder work in separately optimal drive zone to bent axle, in other zones then by the draining valve pressure release.Low pressure line is connected with fuel reserve tank (10).

The piston rod (51) of three single-acting push action cylinders (5) is connected with bent axle (6) among Fig. 2 and Fig. 3, their afterbody earrings (52) is held in by fixed pin shaft (53) frame on the body (41) of main frame, and the oil of oil cylinder is chewed (54) first quarter high pressure hose (3) and is connected with outer pipeline.Bent axle (6) output terminal is except that with work mechanism is connected, and also is in transmission connection by sprocket wheel (61) and camshaft on the distributor.Side at body (41) also is provided with insepction window (42), is used for installing maintenance or observation.

The fuel feeding of oil cylinder (5) and pressure release control are undertaken by distributor, and dispensing arrangement as shown in Figure 4.Distributor (7) is provided with the draining valve (71) identical with oil cylinder (5) quantity, and valve pocket (72) connects with corresponding pressure duct, and the oil extraction end is communicated with a collection chamber (73) on the distributor body.The motion under cam (9) control of correspondence of valve mandril (74) on the draining valve (71), each cam is fixed on the camshaft (91), and axle head is provided with sprocket wheel (92), is connected with crankshaft sprocket (61).

Cam (9) profile as shown in Figure 5, it has a recessed zone that accounts for circumference 1/3, when the valve mandril lower end was in this zone, draining valve cut out, corresponding hydraulic oil cylinder driving bent axle, in other zones of cam, valve mandril is by jack-up, corresponding oil circuit pressure release.

Each oil cylinder oil pump oil circuit corresponding with connects, and 3 oil cylinders need 3 oil pumps, and they can unite driving by one, as shown in Figure 6.Motor among the figure (11) is through the umbrella gear transmission case (12) of gear (13) one 3 output shafts of deceleration (14), and every output shaft (14) drives the oil pump of a correspondence.

Claims

1, a kind of hydraulic pressure slows down mechanical, mainly comprise oil pump and oil cylinder, the do-part that it is characterized in that described hydraulic machinery is that the oil that individual or (4) individual single-acting push action cylinder and bent axle are formed by (3) drives the deceleration main frame, the afterbody earrings of each oil cylinder is connected with this main frame body through fixed pin shaft, constitute a pendulum piston type machinery, described oil cylinder connects with corresponding oil pump oil circuit respectively through high pressure hose, a distributor also is set, be provided with the draining valve of requirement in this distributor, be connected with the pressure duct of each oil pump respectively, its oil extraction end is connected with a pressure release collection chamber on the distributor, the valve mandril of described draining valve is by a corresponding cam drive that is provided with, the coaxial camshaft that is arranged at of each cam, the bent axle that this camshaft and described oil drive the deceleration main frame is in transmission connection with speed.

2, by the described hydraulic pressure deceleration of claim 1 machinery, it is characterized in that described each oil pump is connected with motor through the umbrella gear transmission case of a multi-output shaft.