CN2324309Y - Hydraulic driving servo actuator - Google Patents

Abstract

The utility model relates to a hydraulic driving servo actuator. A crankshaft and a connecting-rod are arranged in the machine body, the crankshaft is extend out of the machine body and is provided with a flywheel, and the connecting rod is connected with a piston which moves in a cylinder body. A change valve is arranged on top of the machine body, each of the left and right end of the valve is in contact with a V-shaped rod, and each of the rod ends is connected with a suite of ejector pin which is provided a spring. The terminal ends of the ejector pins are in contact with a cam whose shaft is provided with a timing gear for engaging the fluted disc of the crankshaft. A decompression pipe and a hydraulic pipe are arranged on top of the change valve, which are respectively connected with an accumulator and an oil dissolving tank. Hydraulic oil enters into the valve and impels the piston and the connecting rod to move, makes the crankshaft rotate, and controls the movement of the change valve via the cam, which makes the direct current hydraulic pressure be changed into alternating current hydraulic pressure and has a function of increasing force; the utility model can be applied to various motive power machines.

Description

Hydraulically driven booster

The utility model relates to a kind of hydraulically driven booster, belongs to the technical field of hydraulic mechanism.

All kinds of machineries are extensive use of speed reducer or oil hydraulic motor, so that can obtain bigger moment of torsion; Major defect is that mechanism's volume is bigger, and ratio coverage is limited, and especially the energy consumption of oil hydraulic motor is bigger, and the rotation torque of generation is less again, and speed ratio is big, and the oil circuit technical requirements extra-high-speed of generating mechanism and actuator.General hydraulic mechanism biases toward and is used for to-and-fro motion, and seldom is used for spinning movement.

The purpose of this utility model is that a kind of hydraulically driven booster will be provided, and it can overcome above-mentioned shortcoming.It mainly is that a selector valve is set in the mechanism of booster, makes direct current hydraulic pressure be changed to AC hydraulic, and makes the fluid medium after promoting piston, and a part of medium is discharged by another passage, thereby makes the medium cooling that circulates in the power-assisted machine.This power-assisted machine can make direct current hydraulic pressure be transformed to AC hydraulic, and has boosting function; Simple in structure, can be used with other mechanism, application area is extremely wide.

The purpose of this utility model is achieved in that

1. cabinet cover (1) is fixing with screw (15) nut (16) with body (14), one bent axle (2) is housed in the body, stretch out outside body (14) and the cabinet cover (1) at its two ends, it is fixing with packing ring (17) nut (18) that one end is equipped with a flywheel (13), a selector valve (3) is fixed on body (14) top, the distolateral V shape pole (4) of respectively adorning in the left and right sides of valve, rod end contacts with the push rod (5) of a setting, be with spring (21) and support pads (22) on the push rod (5), push rod (5) is terminal to be contacted with a cam (6), one bent axle fluted disc (9) is housed on the bent axle, one timing gear (7) is housed on the axle of cam (6),, connecting rod (19) is housed on the bent axle (2) with fluted disc (9) engagement, join with piston (20), piston (20) is positioned at cylinder body (8).

2. hydraulic tube (37) and relief tube (38) are arranged at selector valve (3) top, and each joins with molten fuel tank (40) and main valve (24) and hydraulic accumulator (25).

Fig. 1. the hydraulically driven booster front view

Fig. 2. the hydraulically driven booster plan view

Fig. 3. the hydraulically driven booster side view

Fig. 4. the hydraulically driven booster fundamental diagram

Now in conjunction with the accompanying drawings the structure of hydraulically driven booster is described in detail:

By Fig. 1,2,3, cabinet cover (1) is fixing with screw (15) nut (16) with body (14), one bent axle (2) is housed in the body (14), all stretch out outside body (14) and the cabinet cover (1) at the two ends of bent axle (2), it is fixing with packing ring (17) nut (18) that one end also is equipped with a flywheel (13), and a bent axle fluted disc (9) is housed on the bent axle axle, and connecting rod (19) is housed on the bent axle (2), connecting rod (19) joins with piston (20), and piston (8) is positioned at cylinder body (8).A selector valve (3) is fixed on body (14) top, into oil exit pipe (10) is equipped with at the top of valve, the distolateral V shape pole (4) of respectively adorning in the left and right sides of valve, each contacts the one end with (5 ') with the push rod (5) of a setting, push rod (5) or be with spring (21) on (5 ') and support pads (22), each contacts push rod (5) or (5 ') lower end with a cam (6), timing gear (7) is contained on the same axle with cam (6), timing gear (7) and fluted disc (9) engagement, selector valve (3) below is a cylinder body (8), there is a fixing backing plate (23) in body (14) and cabinet cover (1) outside, fixes with bolt (12) nut.

Fig. 4. hand-hydraulic main valve (24) joins successively with hydraulic supply line (26) and the single-phase pipeline of hydraulic pressure (27), this single-phase pipeline (27) is connected to hydraulicdirectional control valve (28) again, this valve joins with single-phase pressure relief pipe (35) and pressure release house steward (39) again, is connected to molten fuel tank (40) again; Main valve (27) is connected to hydraulic accumulator (25) with pipeline again, accumulator (25) connects an oil pump (36) again, oil pump connects direct current motor (35), distributor (33) is connected with motor (35) with circuitry lines (34), distributor (33) connects an electric switch key (32) again, joins with circuit (42) and DC generator (41) again simultaneously.Be equipped with in the booster that bar (33) is backed down in crank mechanism (30) and pressure release and bar (29) is backed down in the hydraulic pressure automatic control.

Fig. 4. the work cycle of a single-phase structure of expression, heterogeneous structure can with big-and-middle-sized mechanism, only Duo an output main shaft than single-phase structure, 360 °/X divides equally the number of phases by main shaft.Each respectively has an automatic control selector valve (3) mutually, and makes the phase-splitting oil pipe of hydraulic pressure and pressure release all be communicated in main oil pipe.So, though the number of phases increases still each one on hydraulic accumulator (1), storage battery (1) and generator (1) and motor (1).

The hydraulically driven booster working principle:

One end of being made up of bent axle (2) and connecting rod (19) is housed in body (14) has the piston (20) of a hydraulic drive to move in cylinder body (8), respectively adorning the pillar push rod (5) that is with spring (21) in the crank mechanism both sides, one is used for hydraulic mandril, another is a pressure release push rod (5 '), they cooperatively interact, and are controlling the action of selector valve (3).One cam (6) is respectively arranged below two push rods (5,5 '), and its direction is opposite fully, and this cam (6) is connected with fluted disc (9) engagement and with bent axle (6) by timing gear (7).With the also having the hydraulic pressure phasmajector, connect oil pressure house steward, hand-hydraulic main valve, hydraulic accumulator, oil pump, pressure release phasmajector, be connected pressure release house steward and molten fuel tank of body contact.In addition, bent axle drives DC generator by belt, connects distributor and storage battery.

When input power drives oil pump (36), press oil to enter accumulator, reach certain working pressure, open the hydraulic pressure main valve, hydraulic pressure enters selector valve (3), promotes piston (3)-(19), makes bent axle (2) rotation; When cam (6) control pressure release push rod (5), entrance pressure bore closure, piston (20) are replied fluid are discharged from relief tube (38), enter molten fuel tank (40) cooling; When cam (6) control hydraulic mandril (5), hydraulic pressure promotes piston (20)-crank (19) again, makes bent axle (6) rotation.Because the control of selector valve (3), direct current hydraulic pressure is changed to AC hydraulic, and bent axle (2) is rotated and outputting power continuously.Because the effect of hydraulic pressure makes outputting power increase than motive force, has reached the purpose of power-assisted.Simultaneously, this mechanism reduction speed ratio is little, and the power-assisted function is used for sport equipment such as wheel.

Suppose that power drives a BB-B4 type cycloid gear pump for the 250W DC generator, the hydraulic pressure ouput force can reach 25mpu.Flow is 4L/min, makes hydraulic driving boosting piston (φ 25mm), and piston stroke 34mm under the control of twin columns automatic diverter valve, impels hydraulically driven booster to form:

Hydraulic drive piston speed: $\frac{240\×34}{60}=0.136M/S$

Power is: $\frac{250\×4.9\×0.136}{102}=1.633\mathrm{KW}$

This value deducts consumed energy, just draws increasing amount.

Compared with prior art, hydraulically driven booster has following advantages:

1. passing by the direct current hydraulic rotation is changed to the interchange value, can only move back and forth, can not turn; This power-assisted Machine can reach Requirement to the turn power-assisted.

2. according to result of calculation and facts have proved, drive the power-assisted successful, can directly drive tendency to develop Moving parts.

3. reach the hydraulic circulation action, solved pulse and can not grow the problem of putting into practice continuous operation.

4. than the oil hydraulic motor or the mechanical reduction machine of same power, energy consumption is little.

5. Shu Ru motive force is separated hundred meters with the restriction that the powerful torque force of output can be disregarded environmental conditions.

6. control flow rate can reach constant force and conversion rate only.

7. supporting with electricity, can realize the green non-pollution energy, in machineries such as automobile, train, naval vessel, utilize completely, obtain energy-saving power-boost.

Claims (2)

1. hydraulically driven booster, it is characterized in that: cabinet cover (1) is fixing with screw (15) nut (16) with body (14), one bent axle (2) is housed in the body, stretch out outside body (14) and the cabinet cover (1) at its two ends, it is fixing with packing ring (17) nut (18) that one end is equipped with a flywheel (13), a selector valve (3) is fixed on body (14) top, the distolateral V shape pole (4) of respectively adorning in the left and right sides of valve, rod end contacts with the push rod (5) of a setting, be with spring (21) and support pads (22) on the push rod (5), push rod (5) is terminal to be contacted with a cam (6), and a bent axle fluted disc (9) is housed on the bent axle, and a timing gear (7) is housed on the axle of cam (6), mesh with fluted disc (9), connecting rod (19) is housed on the bent axle (2), joins with piston (20), piston (20) is positioned at cylinder body (8).

2. according to the described hydraulically driven booster of claim 1., it is characterized in that: hydraulic tube (37) and relief tube (38) are arranged at selector valve (3) top, and each joins with molten fuel tank (40) and main valve (24) and hydraulic accumulator (25).

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