CN2149483Y

CN2149483Y - Multi-pump hydraulic driven piston engine without crankshaft

Info

Publication number: CN2149483Y
Application number: CN 93203324
Authority: CN
Inventors: 赵德成
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-20
Filing date: 1993-02-20
Publication date: 1993-12-15
Anticipated expiration: 2003-02-20

Abstract

The utility model relates to a multi-pump hydraulic-driven piston engine without crankshafts, omitting crankshaft connecting rod mechanisms. The utility model is characterized in that two plungers 5 which are symmetrically arranged on both ends of a driving frame 7 and the plungers of four sets of plunger pumps which are arranged on a cylinder body 15 are connected through the driving frame 7, a driving sleeve 8, a driving guide sleeve 9 and a connecting rod 10 to form a moving member; the explosive force which alternately acts on the two plunger pushes the moving member to move back and forth; the plunger pump pumps out pressure oil to carry out the hydraulic transmission. Thus, the utility model is a hydraulic power supply which has the advantages of simple and compact structure, high efficiency and low cost and is suitable for workload and velocity variation.

Description

Multi-pump hydraulic driven piston engine without crankshaft

The utility model does not have crankshaft reciprocating piston engine for the multi-pump hydraulic transmission, belongs to the internal combustion engine technologies field.

Have crankshaft ﹠ connecting in the existing reciprocating-piston engine motion, its rotary inertia energy consumption significantly increases under high rotating speed, becomes the principal element that influences engine life and further improve the motor specific power.All improvement projects have been produced around the reject crankshaft ﹠ connecting.Wherein a class is to replace crankshaft-link rod with other mechanical transmission mechanism, as " No. the 1038487th, Soviet Union's patent of invention ", it is with two free wheel devices of oppositely settling and transmission shaft formation driving mechanism, technical problem underlying be the pulsation that under the slow-speed of revolution, occurs and under high rotating speed the decrease in efficiency of this free wheel device; Another kind of is to replace crankshaft ﹠ connecting with hydraulic transmission, as " No. the 85101085th, Chinese invention patent application ", it is on the piston rod that stretches out at single piston hydraulic cylinder two ends an engine piston to be installed respectively, tries hard to recommend hydrodynamic cylinder pressure piston head pressure oil by alternating action firing on the motor two-piston.Technical problem underlying is that its hydraulic cylinder piston cross section immobilizes.Working load acts directly on the engine piston by oil pressure, for load the operating mode of bigger variation, the output power instability of its motor is arranged.This body structure of motor is also comparatively complicated in addition, and volume is also big.

The purpose of this utility model is the crankshaft ﹠ connecting of the existing resurrection piston engine of reject, provides that a kind of volume simple in structure is little, efficient is high and can adapt to the reciprocating-piston engine of working load and velocity variations.

The purpose of this utility model is to realize like this, it is that a kind of multi-pump hydraulic transmission does not have crankshaft reciprocating piston engine, it is characterized in that it is two piston 5(coaxial lines that are installed in gear frame 7 two ends by symmetry) be installed in the plunger of 4 groups of plunger pumps on cylinder body 15 both sides and the two-piston parallel axes axis, by gear frame 7, driving sleeve 8, transmission guide pin bushing 9, coupling rod 10 connects the component movement member, it is reciprocating to try hard to recommend moving this moving link by alternating action firing on two-piston 5,4 groups of plunger pumps pump pressure oil and carry out hydraulic transmission, and the number by hydraulic control valve (not drawing in the accompanying drawing) switchable load plunger pump, form the volume speed change to satisfy different load and rate request.

The utility model is compared the advantage that has with existing reciprocating-piston engine: crankshaft-free connection rod mechanism, twin-tub places same axis, it is simple and compact for structure, volume little in light weight, be easy to manufacturing and dismounting maintenance, the low maintenance expense of cost is few; Crankshaft-free connection rod mechanism rotary inertia consumes, and the piston number of times that does work in per two reciprocating strokes is 4 times of existing quadruple pass stroke reciprocating-piston engine, its efficient height; Can constitute multiple operation mechanism with the oil hydraulic motor or the oil hydraulic cylinder combination of various functions, application area is more extensive; Adopt many pump combination switching controls, can satisfy the little load condition of adjustment and also can satisfy the low speed high load working condition.

The drawing of accompanying drawing is described as follows: Fig. 1 is B-B sectional view among Fig. 2, axial plane sectional view promptly of the present utility model; Fig. 2 is the A-A echelon sectional view of Fig. 1.

Specific embodiments of the present utility model is:

Spark plug 1 in the accompanying drawing 1, cylinder cap 2, cylinder head 4, cylinder sleeve 3, piston 5, the shape of wrist pin 6 and installation connection form are identical with existing two stroke reciprocating engines, two wrist pin 6 symmetries of two piston 5 usefulness are installed in its shape and are equivalent to the two ends of the connecting rod of two existing reciprocating-piston engines with the gear frame 7 of major part butt joint, cylinder body 15 waist symmetries leave two transmission guide pin bushings 9 are stretched out and along on the slip mouth 25(of lower slider see accompanying drawing 2), two transmission guide pin bushings 9 are by driving sleeve 8, coupling rod 10 and gear frame 7 rigid joint, the plunger 11 of two groups of plunger pumps is installed in each transmission guide pin bushing 9 symmetry from slip mouth 25 extensions of cylinder body 15, the pump housing 12 corresponding symmetries of every group of plunger pump are fixed on the cylinder body 15, have 4 groups of pumps in the structure of unit shown in this accompanying drawing, every group of pump formed 4 plunger pumps by 1 the four chamber pump housing and 4 plungers.The utility model is joined vapour and is powered to use and join heat pump and storage battery independence construction system.Unit structure shown in the accompanying drawing 2 join vapour and power supply and motor interlock, be provided with two and join magnet that

cylinder

16 and 1 reciprocable generator 17, two join steam-cylinder piston 22 and generator 17 and be placed in and join on the cylinder piston rod 21.Piston rod 21 be rigidly connected with gear frame 7 by bolt 18, spring bolt 19 and the connecting sleeve that from cylinder body 15 openings, stretches out 20 and with reciprocating (join vapour and power supply system do not belong to the utility model feature thus describe be omitted).In the accompanying drawing 2 23 changes steam vent for motor, and 24 is the exhaust hole of motor.

Startup of the present utility model is the reversible action that utilizes oil hydraulic pump.To start the high pressure oil that oil pump pumps (or be stored in the high pressure oil bag high pressure oil) and alternately feed plunger pump by starting changing valve (accompanying drawing does not draw), promote the plunger of plunger pump and the quick to-and-fro motion of piston of gear frame 7 and motor and realize firing startup, change making the normal pump oil of plunger pump again by pressure changeover valve automatically.The last lower dead center of two-piston 5 is by the oil drain out in the accompanying

drawing

1, and 13 offer determining positions, and after plunger 11 front ends hid oil drainage hole 13 fully, the pressure oil in the sealed cavity beyond oil drainage hole 13 made plunger 11 cushion so that stop until piston 5.The utility model switches the number that is in the plunger pump of load operation in each pump group by hydraulic pressure changing valve (not drawing in the accompanying drawing), the flow that changes pressure oil forms the volume speed change, simultaneously by switching the total cross section of conversion load operation plunger, keep acting on and fire power with working load is complementary on the piston 5, make motor in each speed class, have stable power and export.

Periodic duty process of the present utility model is as follows:

The utility model can be unit structure, the also combination of being made up of several unit structures (multi-cylinder) as shown in drawings.Adopt suitable vapour and the administration of power supply of joining, make the moving link of a plurality of unit structures and respectively organize the pump housing and be installed on the 1 body multi-cavity cylinder body, and under the prerequisite that takes into full account gear frame 7 and two-piston 5 stress balances on each gear, rationally determine the number and the mounting point of pump group and every group of pump.Each unit structure is relatively independent, when wherein 1 or several unit structure break down, does not influence other unit structure and works on.

Of the present utility model firing can be the spark ignitor structure, also can be fuel injection compression ignite structure (diesel engine).

The utility model is as a kind of hydraulic power supply, all can use hydraulicdriven instrument and equipment all can be used, especially be applied to communications and transportation and crane gears such as automobile, tractor, loader, hoist, motorcycle, oil hydraulic motor that can be different or oil hydraulic cylinder adapted with function, can realize rotatablely moving and also can realize straight reciprocating motion, the little load condition of high speed can be satisfied and the low speed high load working condition can be satisfied again, replace the mechanical speed change mechanism and the mechanical transmission mechanism of the said equipment simultaneously again with hydraulic speed-changing and hydraulic transmission, the complete machine cost is fallen greatly.

Claims

1, a kind of multi-pump hydraulic transmission does not have crankshaft reciprocating piston engine, it is characterized in that it be by symmetry be installed in cylinder body 15, two-piston 5, two cylinder caps 2, two cylinder sleeves 3, two cylinder heads 4, two spark plugs 1 of same axis and be installed in cylinder body 15 both sides and Boring mill line parallel axis on 4 groups of plunger pumps constitute; Two-piston 5 usefulness two-piston pins 6 symmetries are installed in the two ends of gear frame 7; Two transmission guide pin bushings, 9 usefulness driving sleeves 8, coupling rod 10 symmetries are installed in the both sides, middle part of gear frame 7, and the slip mouth of offering from cylinder body 15 waists 25 stretches out, and symmetry is installed the plunger 11 of 4 groups of plunger pumps on its extension, constitute moving links with two-piston 5.

2, multi-pump hydraulic transmission according to claim 1 does not have crankshaft reciprocating piston engine, and it is characterized in that does not have the combination that crankshaft reciprocating piston engine constitutes by several said multi-pump hydraulic transmissions.