CN2154230Y - Hydraulic driving device for rickshaw - Google Patents

Abstract

The utility model relates to a hydraulic driving device for rickshaws, particularly a hydraulic driving device for manpower tricycles. The utility model mainly comprises a machine frame, an oil pump, a tank, an oil path reversal valve, two hydraulic cylinders, an output shaft and a gear-shifting device. The utility model has the advantages of simple structure, easy manufacture, reasonable requirements of weight and art accuracy, not only labour saving as compared with the driving means of traditional rickshaws, but also big output rate, high output speed, etc. When the rickshaw is shutdown on a ramp, the phenomenon of inverted slipperiness of the rickshaw can not happen.

Description

Hydraulic driving device for rickshaw

The utility model relates to a kind of fluid pressure drive device that is used for rickshaw, especially for the fluid pressure drive device of manual tricycle.

Seen rickshaw drive form is at present: manpower → chain gear → gear change → takeoff output.This type of drive is difficult to reach the requirement of Large-power High-Speed degree.

The purpose of this utility model is to provide the rickshaw fluid pressure drive device of a kind of labour-saving Large-power High-Speed degree.

The purpose of this utility model is achieved in that a cover fluid pressure drive device was set before change gear transmission, this fluid pressure drive device comprises frame, oil pump, fuel tank, oil circuit reversing arrangement, two hydraulic actuating cylinders, output shaft and change gear transmissions, two hydraulic actuating cylinders are arranged in parallel, the outer end of piston rod is provided with a catch bar, this catch bar is connected with chain, this chain matches with ratchet on the output shaft, and the ante-chamber of one of them hydraulic actuating cylinder and back cavity are communicated with the back cavity and the ante-chamber of another hydraulic actuating cylinder respectively.Can use power-transfer clutch when needing, when stopping like this, do not have reversing slide car phenomenon on the ramp, power-transfer clutch belongs to prior art.

The utlity model has simple in structurely, it is easy to make processing, and weight and requirement on machining accuracy are reasonable, compares not only laborsavingly with traditional rickshaw drive form, and horsepower output is big, and dawn speed is also very high.

Fig. 1 is the utility model rickshaw fluid pressure drive device assembly birds-eye view;

Fig. 2 is the hydraulic circuit figure of the utility model rickshaw fluid pressure drive device;

Fig. 3 is the utility model partial side view.

Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.

With reference to Fig. 1-3, the utility model rickshaw fluid pressure drive device, it mainly comprises frame 1, oil pump 2, fuel tank 3, oil circuit reversing arrangement, two hydraulic actuating cylinder 10,11 output shafts 4 and change gear transmission 5.Two hydraulic actuating cylinder 10,11 secured in parallel are on frame 1, the outer end of its piston rod 12,13 is provided with a parallel catch bar 14,15, the two ends of parallel catch bar 14,15 are connected with 18,19 with chain 16,17 respectively, chain 16,17,18 is connected with the tensile elasticity device with 19 the other end, and this springing is fixed on (not shown) on the frame 1. Chain 16,17,18,19 matches with ratchet 20,21,22 and 23 on the output shaft 4 respectively.The ante-chamber 24 of hydraulic actuating cylinder 10 and back cavity 25 are communicated with the back cavity 26 and the ante-chamber 27 of hydraulic actuating cylinder 11 respectively.The oil circuit reversing arrangement comprises two oil circuit guide valves 28,29, T-shaped bar 30, gangbar 31 and oscillating type telescopic spring frame 32.Two oil circuit guide valves 28,29 are fixed on the frame 1, and gangbar 31, T-shaped bar 30 and oscillating type expansion bracket 32 are rotatably fixed on the frame 1.Wherein the two ends contact 48,47 of gangbar 31 is kept in touch with the contact 35,36 of two guide valve 28,29 1 sides all the time.Oscillating type is stretched firing mount 32 and is comprised sliding bar 41, turning cylinder 42 and compression spring 44.Montant 39 in the T-shaped bar 30 is rotationally connected with sliding bar 41, and sliding bar 41 and turning cylinder 42 sliding block joints are provided with a compression spring 44 between flange on the sliding bar 41 43 and turning cylinder 42.Under the effect of the compression spring 44 of a contact 45 in oscillating type telescopic spring frame 30 in the contact 45,46 at cross bar 40 two ends in the T-shaped bar 30, hit on the contact (as contact 37) that is pressed in the oil circuit guide valve (as guide valve 29), spool in this guide valve 29 is moved to the left, and the spool in another guide valve 28 is moved right by gangbar 31.Be provided with four duplicate ratchets 20,21,22 and 23 on output shaft 4, the ratchet periphery is provided with the tooth that matches with chain.When guide valve 28,29 is in position shown in Fig. 2, hydraulic oil enters hydraulic actuating cylinder 10 back cavities 25, hydraulic actuating cylinder 11 ante-chambers 27, piston rod 12 stretches out, piston rod 12 hauls chain 16,17 to left movement, rotate thereby drive ratchet 20,21, ratchet 20,21 drives output shaft 4 and rotates, and by output shaft 4 moment is passed to transmission system 5.Meanwhile, piston rod 13 withdrawals make chain 18,19 drive the idle running of ratchet 22,23 cws under the effect of tensile elasticity device.Strike the post 54 when the vertical junction that the parallel catch bar 14 on the piston rod 12 bumps against on the T-shaped bar 30, T-shaped bar 30 is rotated, its montant 39 both slided sliding bar 41 in turning cylinder 42, turning cylinder 42 was rotated, simultaneously compression spring 44.When T-shaped bar 30 rotates by center line X, under the effect of compression spring 44, contact 45 on the T-shaped bar 30 leaves the contact 37 on the change-over valve 29, and the contact 38 on the contact 46 bump change-over valves 28, the contact 36 that makes change-over valve 28 is by knocking-on, promotion gangbar 31 is rotated, and the contact on the change-over valve 29 35 is pressed into, thereby has realized the commutation of oil circuit.Reciprocal therewith, just unidirectional moment can be passed to output shaft 4, and pass to transmission system 5.By transmission system 5 its rotating speed is increased.Thereby obtain high-power and high-speed output.Rickshaw drives wheel disc and drives oil pump 2 by chain, and the output chain gear 60 of transmission system 5 is connected (not shown) with the rickshaw drive sprocket.

Claims (5)

1, a kind of rickshaw fluid pressure drive device, it is characterized in that it comprises frame, oil pump, fuel tank, the oil circuit reversing arrangement, two hydraulic rams, and output shaft and change gear transmission, two hydraulic rams are arranged in parallel, the outer end of piston rod is provided with a catch bar, the two ends of catch bar are connected on the end of chain, the other end of chain is connected with a tensile elasticity device, this chain cooperates with ratchet on being installed in output shaft, the ante-chamber of one of them hydraulic ram is communicated with the back cavity of another hydraulic ram, makes the motion in the opposite direction synchronously of two pistons in the hydraulic ram.

2, fluid pressure drive device according to claim 1 is characterized in that the oil circuit reversing arrangement comprises two oil circuit guide valves, T-shaped bar, gangbar and oscillating type telescopic spring frame.

3, fluid pressure drive device according to claim 1 and 2, it is characterized in that two oil circuit guide valves are fixed on the frame abreast, gangbar, T-shaped bar and oscillating type telescopic spring frame are rotatably fixed on the frame, wherein the two ends of gangbar keep closely connected with the contact of two guide valve one sides respectively and contact, montant and sliding bar in the T-shaped bar are rotationally connected, sliding bar and turning cylinder sliding block joint, between the flange of sliding bar and turning cylinder, be provided with a compression spring, and in the contact at the cross bar two ends in the T-shaped bar one, under the effect of the compression spring in oscillating type telescopic spring frame, hit on the contact that is pressed in the oil circuit guide valve, spool in this guide valve is moved to the left, and the spool in another guide valve is moved right by gangbar.

4, according to claim 1 or 3 described fluid pressure drive devices, it is characterized in that being provided with four duplicate ratchets on output shaft, the ratchet periphery is provided with the tooth that matches with chain.

5, fluid pressure drive device according to claim 3, it is characterized in that respectively being provided with a vertical junction on T-shaped bar two contacts strikes the post, when the piston rod in the hydraulic ram stretches out, parallel catch bar can promote contact stud cooresponding with it, and under the effect of compression spring, make its contact that clashes into guide valve, thereby change the oil circuit direction.

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