CN104047799A - Multiple-stroke hydraulic engine and working method - Google Patents
Multiple-stroke hydraulic engine and working method Download PDFInfo
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- CN104047799A CN104047799A CN201410210464.5A CN201410210464A CN104047799A CN 104047799 A CN104047799 A CN 104047799A CN 201410210464 A CN201410210464 A CN 201410210464A CN 104047799 A CN104047799 A CN 104047799A
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Abstract
The invention relates to the technical field of engines and discloses a multiple-stroke hydraulic engine and a working method. At least one hydraulic oil plug cylinder is arranged in the engine shell of the multiple-stroke hydraulic engine, and the piston rod of the hydraulic oil plug cylinder is hinged to a corresponding crank of a crankshaft mechanism through a hemispherical head active joint connecting rod; and a crankshaft located on one end of the crankshaft mechanism and extending out from the engine shell is provided with a gear mechanism where a distributor oil inlet valve and a distributor oil distribution valve carry out synchronous action, and another crankshaft located on the other end of the crankshaft mechanism and extending out from the engine shell is connected with a load. According to the invention, a low-power high-oil pressure compressor is adopted for three hydraulic cylinders with a phase angle of 120 DEG used in the multiple-stroke hydraulic engine to allow the three hydraulic cylinders to apply hydraulic power on cranks on the crankshafts, so a plurality of hydraulic cylinders realizing rotation of the crankshafts generate power and it is realized that each hydraulic cylinder drives corresponding cranks on the crankshafts to rotate. The multiple-stroke hydraulic engine has the advantages of no emission of tail gas, no pollution, great power, a small size of the engine body and cyclic usability of hydraulic oil of a power source and overcomes the problem of shortage of power energy.
Description
technical field
The present invention relates to technical field of engines, especially relate to a kind of multiple-pass fluid power motor and the method for work in hydraulic power field.This multiple-pass fluid power motor is particularly useful for the application of electric motor car, electro-tricycle, automobile, tractor, has pollution-free, noise free, power is large, the environmental protection formula fluid power motor that volume is little.
background technique
At present, the motor of existing automobile, tractor, motorcycle is fuel engine, under steam, the tail gas dense smoke discharge amount producing is large, pollute the ambient air of this area, and can hear the noise of tail gas dense smoke discharge, give people's living environment and healthyly bring great impact.Because the reserves of petroleum resources are limited, cause the petroleum resources growing tension of power source, oil price skyrockets, also cause the power acting of fuel engine, the cost of the resource that consumes petroleum improves, and for reducing the cost of power acting, is badly in need of low, the high-power motor of a kind of power source cost.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of multiple-pass fluid power motor and method of work.
For achieving the above object, the present invention adopts following technological scheme:
A kind of multiple-pass fluid power motor, comprise: motor body 1, hydraulic oil plug cylinder 2, distributor oiling valve 3, distributor are sent fuel tap 4, crank mechanism, compressor, fuel tank, in described motor body 1, be provided with the hydraulic oil plug cylinder 2 that is at least, the piston rod of described hydraulic oil plug cylinder 2 is articulated and connected by hemispherical head joint link lever 5 crank corresponding with crank mechanism of living; Stretch out and on the bent axle 6 of the outer one end of motor body 1 crank mechanism, be provided with the gear mechanism that distributor oiling valve 3 and distributor are sent fuel tap 4 synchronization motions, the bent axle 6 that stretches out the outer the other end crank mechanism of motor body 1 is connected with load;
The input end of described distributor oiling valve 3 is communicated with compressor by oil pipe, some interfaces 3.1 that distributor oiling valve the first output terminal arranges are communicated with the upper oil hole 2.1 of corresponding hydraulic oil plug cylinder 2 by oil pipe, and some interfaces 3.2 that the second output terminal of distributor oiling valve arranges are lower oilhole 2.2 connections with corresponding hydraulic oil plug cylinder 2 by oil pipe;
Described distributor sends the output terminal of fuel tap 4 to be communicated with fuel tank by oil pipe, distributor sends some interfaces 4.1 that fuel tap 4 first input ends arrange to be communicated with the upper oil hole 2.1 of corresponding hydraulic oil plug cylinder 2 by oil pipe, and some interfaces 4.2 that distributor send fuel tap 4 second input ends settings are lower oilhole 2.2 connections with corresponding hydraulic oil plug cylinder 2 by oil pipe.
A kind of multiple-pass fluid power motor, described bent axle linking mechanism comprises: bent axle 6, crank, the joint link lever 6 of living, on bent axle, be provided with and be at least a crank that hydraulic oil plug cylinder 2 is corresponding, the hinged joint link lever alive of each crank is connected with the piston rod of hydraulic oil plug cylinder 2, and the master gear 7 stretching out on motor body 1 outer crankshaft sends minute two gears 9 for fuel tap 4 to be connected with a joggle by a minute gear 8 of distributor oiling valve 3 with distributor; Equal subangle on 360 ° of circumference that the angle that on described bent axle, radially direct connect to be lived between the crank of joint link lever is bent axle.
A kind of multiple-pass fluid power motor, hydraulic oil plug cylinder 2 in described motor body 1 is three hydraulic oil plug cylinders 2, piston rod 2.3 in three hydraulic oil plug cylinders 2 is articulated and connected with crank corresponding on bent axle by the hemispherical head joint link lever 5 of living, and the phase angle between each crank is 120 degree; Or be two hydraulic oil plug cylinders 2, the phase angle between each crank is 180 degree; Or be four hydraulic oil plug cylinders 2, the phase angle between each crank is 90 degree.
A kind of multiple-pass fluid power motor, described hydraulic oil plug cylinder 2, comprise: cylinder body 2.1, hydraulic piston 2.2, piston rod 2.3, described cylinder body is connected to form by upper cylinder cover, cylindrical shell 2.4, lower cylinder cap 2.5, and upper cylinder cover 2.7 is same one with the upper cover of motor body; The hydraulic piston 2.2 that is positioned at cylinder body is fixedly connected with piston rod 2.3 by bolt, and the seal arrangement 2.6 that the piston rod the other end stretches out lower cylinder cap is connected with the joint link lever of living, and the stroke that the interior hydraulic piston 2.2 of hydraulic oil plug cylinder 2 moves up and down is two strokes.
A kind of multiple-pass fluid power motor, valve rod and valve cylinder that described distributor oiling valve 3 has rotation form, valve cylinder is outside equipped with the input end interface 3.3 being communicated with compressor, some interfaces 3.1 of the uniform arrangement of the first output terminal, some interfaces 3.2 of the uniform arrangement of the second output terminal, on valve cylinder, the second output terminal interface 3.2 and the first output terminal interface 3.1 are non-radially setting, and differ 90 °;
On valve rod in valve cylinder, be provided with the valve rod cocircuit of the corresponding connection of input end interface 3.3, with the first output oil hole on the corresponding valve rod being communicated with of some interfaces 3.1 of the uniform arrangement of the first output terminal and with the second output oil hole on the corresponding valve rod being communicated with of some interfaces 3.2 of the uniform arrangement of the second output terminal; Valve rod cocircuit is led to some the second output oil holes on some the first output oil holes and valve rod on valve rod and is communicated with by oil; The valve shaft of the valve rod the other end is fixedly connected with oiling valve distribution gear by bearing, seal arrangement.
A kind of multiple-pass fluid power motor, some the first output oil holes on described distributor oiling valve 3 valve rods are two the first output oil holes, the angle of two the first output oil holes is 180 degree, two the second output oil holes and the corresponding setting of two the first output oil holes on valve rod;
Some the first output oil holes on described distributor oiling valve 3 valve rods or be three the first output oil holes, the angle of three the first output oil holes is 120 degree, three the second output oil holes and the corresponding setting of three the first output oil holes on valve rod.
A kind of multiple-pass fluid power motor, valve rod and valve cylinder that described distributor sends fuel tap 4 to have rotation form, valve cylinder is outside equipped with the output terminal interface 4.3 being communicated with fuel tank, some interfaces 4.1 of the uniform arrangement of first input end, some interfaces 4.2 of the uniform arrangement of the second input end, on valve cylinder, the second input end interface 4.2 is non-radially setting with first input end interface 4.1, and differs 90 °;
On valve rod in valve cylinder, be provided with the valve rod cocircuit of the corresponding connection of output terminal interface 4.3, with the first input oilhole on the corresponding valve rod being communicated with of some interfaces 4.1 of the uniform arrangement of first input end and with on the corresponding valve rod being communicated with of some interfaces 4.2 of the uniform arrangement of the second input end, second input oilhole; Valve rod cocircuit is communicated with some the second input oilholes on some the first input oilholes and valve rod on valve rod by oil duct; The valve shaft of the valve rod the other end is by bearing, seal arrangement and send fuel tap distribution gear to be fixedly connected with.
A kind of multiple-pass fluid power motor, described hemispherical head joint link lever 5 alive is fixedly connected with regulating connecting rod 5.1 by hemispherical head joint alive, bulb 5.3 and lock dog 5.4 that hemispherical head joint alive is coordinated by ball seat 5.2 connect and compose, the silk hole that ball seat 5.2 one end arrange is connected with the threads of lead screw of regulating connecting rod 5.1, and leading screw is provided with fastening locknut 5.5; Live joint link lever 5 or replace with pin formula connecting rod of described hemispherical head, pin formula connecting rod is fixedly connected with and forms with connecting rod by the hinged piston rod of pin.
A method of work for multiple-pass fluid power motor, utilizes the low-power high pressure of oil hydraulic pump to drive the crank on bent axle that three oil hydraulic cylinder phase angles are 120 to apply hydraulic power, reaches the method for work of crankshaft rotating: its step is as follows:
1) upper oil hole 2.1 of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder sequentially rotates the oil-feed of hexagonal angle order, acting from top to bottom by the first crank, the second crank, the 3rd crank corresponding on bent axle;
A. the hydraulic oil that the upper oil hole 2.1 of the first oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1 in motor body 1, the piston that compresses the first oil hydraulic cylinder moves down, the piston rod of the first oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the first oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor; Wherein connecting rod adopts hemispherical head joint link lever 5 alive or pin formula connecting rod;
When b. in motor body 1, the piston rod of the first oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod, the hydraulic oil that in motor body 1, the upper oil hole 2.1 of the second oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1, the piston that compresses the second oil hydraulic cylinder moves down, the piston rod of the second oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the second oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor;
When c. in motor body 1, the piston rod of the second oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil that in motor body 1, the upper oil hole 2.1 of the 3rd oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1, the piston that compresses the 3rd oil hydraulic cylinder moves down, the piston rod of the 3rd oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the 3rd oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor;
When d. in motor body 1, the piston rod of the 3rd oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil of coming in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1 to the upper oil hole 2.1 of the first oil hydraulic cylinder, the piston that compresses the first oil hydraulic cylinder moves down, and completes crank corresponding on bent axle and rotates one week;
2) the lower oilhole 2.1 of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder sequentially rotates the oil-feed of hexagonal angle order, acting from bottom to top by the first crank, the second crank, the 3rd crank corresponding on bent axle;
A. the hydraulic oil that the lower oilhole 2.2 of the first oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2 in motor body 1, the piston that compresses the first oil hydraulic cylinder moves up, the piston rod of the first oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the first oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When b. in motor body 1, the piston rod of the first oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod, the hydraulic oil that in motor body 1, the lower oilhole 2.2 of the second oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2, the piston that compresses the second oil hydraulic cylinder moves up, the piston rod of the second oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the second oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When c. in motor body 1, the piston rod of the second oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil that in motor body 1, the lower oilhole 2.2 of the 3rd oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2, the piston that compresses the 3rd oil hydraulic cylinder moves up, the piston rod of the 3rd oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the 3rd oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When d. in motor body 1, the piston rod of the 3rd oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil of coming in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2 to the lower oilhole 2.2 of the first oil hydraulic cylinder, the piston that compresses the first oil hydraulic cylinder moves up, and completes crank corresponding on bent axle and rotates one week;
3) wherein, the first output terminal interface 3.1 of the distributor oiling valve 3 corresponding with each oil hydraulic cylinder upper oil hole 2.1, by master gear, oiling valve gear driven oiling valve valve rod on bent axle, rotate, oiling valve valve rod is pressed on bent axle the first corresponding crank, the second crank, the 3rd crank and is rotated hexagonal angle, and the hydraulic oil by compressor is sequentially the upper cylinder half conveying liquid force feed of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder through the input end of distributor oiling valve 3;
Simultaneously, send the second input end interface 4.2 of fuel tap 4 with the distributor of the corresponding connection of oilhole 2.2 under each oil hydraulic cylinder, by master gear on bent axle, send fuel tap gear driven to send fuel tap valve rod to rotate, send fuel tap valve rod synchronous by the first crank corresponding on bent axle, the second crank, the 3rd crank, rotate hexagonal angle, sequentially connect lower oilhole 2.2 hydraulic oil of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder, by distributor, send the output terminal of fuel tap 4 to be delivered to fuel tank;
The second output terminal interface 3.2 with the distributor oiling valve 3 that under each oil hydraulic cylinder, oilhole 2.2 is corresponding, with the rotation of oiling valve valve rod, oiling valve valve rod sequentially rotates by the first crank, the second crank, the 3rd crank corresponding on bent axle the lower cylinder conveying liquid force feed that hexagonal angle is sequentially the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder;
Simultaneously, the distributor corresponding with each oil hydraulic cylinder upper oil hole 2.1 sent the first input end interface 4.1 of fuel tap 4, with the rotation of sending fuel tap valve rod, send fuel tap valve rod to rotate hexagonal angle by the first crank corresponding on bent axle, the second crank, the 3rd crank, sequentially connect upper oil hole 2.1 hydraulic oil of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder, by distributor, send the output terminal of fuel tap 4 to be delivered to fuel tank;
By the continuous oil transportation of 3 pairs of the first oil hydraulic cylinders of distributor oiling valve, the second oil hydraulic cylinder, the upper cylinder half of the 3rd oil hydraulic cylinder, lower cylinder, and distributor send 4 pairs of the first oil hydraulic cylinders of fuel tap, the second oil hydraulic cylinder, the upper cylinder half of the 3rd oil hydraulic cylinder, lower cylinder continuously to fuel tank group oil; The first crank, the second crank, the 3rd crank corresponding on the piston actuated bent axle of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder rotate continuously.
Owing to adopting technological scheme as above, the present invention has following superiority:
A kind of multiple-pass fluid power motor and method of work, adopt hydraulic compressor to make three oil hydraulic cylinders of the machine produce power, during work, this motor drives compressor or oil hydraulic pump by additional motor, make compressor or oil hydraulic pump for three oil hydraulic cylinders of high pressure oil jacking the machine, accomplish that every cylinder two stroke driving cranks rotate.Three oil hydraulic cylinder six strokes of the machine, or replace with two cylinder four-journeys, four cylinder eight strokes.This motor has without any exhaust emissions, pollution-free, power is large, and motor volume is little, and the hydraulic oil of power source can be recycled, and the loss of hydraulic oil is few, has solved the situation of power source anxiety.
accompanying drawing explanation
Fig. 1 is the structural representation of multiple-pass fluid power motor.
Fig. 2 is the side structure schematic diagram of multiple-pass fluid power motor.
To be motor distributor oiling valve send fuel tap to synchronize the schematic diagram rotating with distributor to Fig. 3.
Fig. 4 is the structural representation that motor distributor oiling valve valve rod and oilhole distribute.
embodiment
As shown in Figure 1,2,3, 4, a kind of multiple-pass fluid power motor, comprise: motor body 1, hydraulic oil plug cylinder 2, distributor oiling valve 3, distributor are sent fuel tap 4, crank mechanism, compressor, fuel tank, in described motor body 1, be provided with the hydraulic oil plug cylinder 2 that is at least, the piston rod of described hydraulic oil plug cylinder 2 is articulated and connected by hemispherical head joint link lever 5 crank corresponding with crank mechanism of living; Stretch out and on the bent axle 6 of the outer one end of motor body 1 crank mechanism, be provided with the gear mechanism that distributor oiling valve 3 and distributor are sent fuel tap 4 synchronization motions, the bent axle 6 that stretches out the outer the other end crank mechanism of motor body 1 is connected with load;
The input end of described distributor oiling valve 3 is communicated with compressor by oil pipe, some interfaces 3.1 that distributor oiling valve the first output terminal arranges are communicated with the upper oil hole 2.1 of corresponding hydraulic oil plug cylinder 2 by oil pipe, and some interfaces 3.2 that the second output terminal of distributor oiling valve arranges are lower oilhole 2.2 connections with corresponding hydraulic oil plug cylinder 2 by oil pipe;
Described distributor sends the output terminal of fuel tap 4 to be communicated with fuel tank by oil pipe, distributor sends some interfaces 4.1 that fuel tap 4 first input ends arrange to be communicated with the upper oil hole 2.1 of corresponding hydraulic oil plug cylinder 2 by oil pipe, and some interfaces 4.2 that distributor send fuel tap 4 second input ends settings are lower oilhole 2.2 connections with corresponding hydraulic oil plug cylinder 2 by oil pipe.
The bent axle linking mechanism of multiple-pass fluid power motor comprises: bent axle 6, crank, the joint link lever 6 of living, on bent axle, be provided with and be at least a crank that hydraulic oil plug cylinder 2 is corresponding, the hinged joint link lever alive of each crank is connected with the piston rod of hydraulic oil plug cylinder 2, and the master gear 7 stretching out on motor body 1 outer crankshaft sends minute two gears 9 for fuel tap 4 to be connected with a joggle by a minute gear 8 of distributor oiling valve 3 with distributor; Equal subangle on 360 ° of circumference that the angle that on described bent axle, radially direct connect to be lived between the crank of joint link lever is bent axle.
To be piston rod 2.3 in 2, three hydraulic oil plug cylinders 2 of three hydraulic oil plug cylinders be articulated and connected with crank corresponding on bent axle by the hemispherical head joint link lever 5 of living hydraulic oil plug cylinder 2 in described motor body 1, and the phase angle between each crank is 120 degree; Or be two hydraulic oil plug cylinders 2, the phase angle between each crank is 180 degree; Or be four hydraulic oil plug cylinders 2, the phase angle between each crank is 90 degree.
Described hydraulic oil plug cylinder 2, comprising: cylinder body 2.1, hydraulic piston, piston rod 2.3, and described cylinder body is connected to form by upper cylinder cover 2.7, cylindrical shell 2.4, lower cylinder cap 2.5, and upper cylinder cover 2.7 is same one with the upper cover of motor body; The hydraulic piston that is positioned at cylinder body is fixedly connected with piston rod 2.3 by bolt, and the seal arrangement 2.6 that piston rod 2.3 the other ends stretch out lower cylinder cap is connected with the joint link lever 5 of living, and the stroke that the interior hydraulic piston of hydraulic oil plug cylinder 2 moves up and down is two strokes.
The valve rod 3.4 that described distributor oiling valve 3 has rotation forms with valve cylinder 3.5, valve cylinder 3.5 is outside equipped with the input end interface 3.3 being communicated with compressor, some interfaces 3.1 of the uniform arrangement of the first output terminal, some interfaces 3.2 of the uniform arrangement of the second output terminal, on valve cylinder 3.5, the second output terminal interface 3.2 and the first output terminal interface 3.1 are non-radially setting, and differ 90 °;
On valve rod in valve cylinder 3.5, be provided with the valve rod cocircuit of the corresponding connection of input end interface 3.3, with the first output oil hole on the corresponding valve rod being communicated with of some interfaces 3.1 of the uniform arrangement of the first output terminal and with the second output oil hole on the corresponding valve rod being communicated with of some interfaces 3.2 of the uniform arrangement of the second output terminal; Valve rod cocircuit is led to some the second output oil holes on some the first output oil holes and valve rod on valve rod and is communicated with by oil; The valve shaft of the valve rod the other end is fixedly connected with oiling valve distribution gear by bearing, seal arrangement.
Some the first output oil holes on described distributor oiling valve valve rod 3.4 are that two the first output oil holes are as A oilhole, B oilhole, the angles of two first output A oilholes, B oilhole are 180 degree, two the second output oil holes and the corresponding setting of two the first output oil holes on valve rod;
Some the first output oil holes on described distributor oiling valve valve rod 3.4 or be three the first output oil holes, as A oilhole, B oilhole, C oilhole, the A oilhole of three the first output oil holes, B oilhole, C oilhole angle are 120 degree, three the second output oil holes and the corresponding setting of three the first output oil holes on valve rod; As shown in Figure 4.
The valve rod 4.4 that the distributor of multiple-pass fluid power motor sends fuel tap 4 to have rotation forms with valve cylinder 4.5, valve cylinder 4.5 is outside equipped with the output terminal interface 4.3 being communicated with fuel tank, some interfaces 4.1 of the uniform arrangement of first input end, some interfaces 4.2 of the uniform arrangement of the second input end, on valve cylinder, the second input end interface 4.2 is non-radially setting with first input end interface 4.1, and differs 90 °;
On valve rod in valve cylinder, be provided with the valve rod cocircuit of the corresponding connection of output terminal interface 4.3, with the first input oilhole on the corresponding valve rod being communicated with of some interfaces 4.1 of the uniform arrangement of first input end and with on the corresponding valve rod being communicated with of some interfaces 4.2 of the uniform arrangement of the second input end, second input oilhole; Valve rod cocircuit is communicated with some the second input oilholes on some the first input oilholes and valve rod on valve rod by oil duct; The valve shaft of the valve rod the other end is by bearing, seal arrangement and send fuel tap distribution gear to be fixedly connected with.
The hemispherical head joint link lever 5 alive of multiple-pass fluid power motor is fixedly connected with regulating connecting rod 5.1 by hemispherical head joint alive, bulb 5.3 and lock dog 5.4 that hemispherical head joint alive is coordinated by ball seat 5.2 connect and compose, the silk hole that ball seat 5.2 one end arrange is connected with the threads of lead screw of regulating connecting rod 5.1, and leading screw is provided with fastening locknut 5.5; Live joint link lever 5 or replace with pin formula connecting rod of described hemispherical head, pin formula connecting rod is fixedly connected with and forms with connecting rod by the hinged piston rod of pin.
A method of work for multiple-pass fluid power motor, utilizes the low-power high pressure of oil hydraulic pump to drive the crank on bent axle that three oil hydraulic cylinder phase angles are 120 to apply hydraulic power, reaches the method for work of crankshaft rotating: its step is as follows:
1) upper oil hole 2.1 of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder sequentially rotates the oil-feed of hexagonal angle order, acting from top to bottom by the first crank, the second crank, the 3rd crank corresponding on bent axle;
A. the hydraulic oil that the upper oil hole 2.1 of the first oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1 in motor body 1, the piston that compresses the first oil hydraulic cylinder moves down, the piston rod of the first oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the first oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor; Wherein connecting rod adopts hemispherical head joint link lever 5 alive or pin formula connecting rod;
When b. in motor body 1, the piston rod of the first oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod, the hydraulic oil that in motor body 1, the upper oil hole 2.1 of the second oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1, the piston that compresses the second oil hydraulic cylinder moves down, the piston rod of the second oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the second oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor;
When c. in motor body 1, the piston rod of the second oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil that in motor body 1, the upper oil hole 2.1 of the 3rd oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1, the piston that compresses the 3rd oil hydraulic cylinder moves down, the piston rod of the 3rd oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the 3rd oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor;
When d. in motor body 1, the piston rod of the 3rd oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil of coming in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1 to the upper oil hole 2.1 of the first oil hydraulic cylinder, the piston that compresses the first oil hydraulic cylinder moves down, and completes crank corresponding on bent axle and rotates one week;
2) the lower oilhole 2.1 of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder sequentially rotates the oil-feed of hexagonal angle order, acting from bottom to top by the first crank, the second crank, the 3rd crank corresponding on bent axle;
A. the hydraulic oil that the lower oilhole 2.2 of the first oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2 in motor body 1, the piston that compresses the first oil hydraulic cylinder moves up, the piston rod of the first oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the first oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When b. in motor body 1, the piston rod of the first oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod, the hydraulic oil that in motor body 1, the lower oilhole 2.2 of the second oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2, the piston that compresses the second oil hydraulic cylinder moves up, the piston rod of the second oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the second oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When c. in motor body 1, the piston rod of the second oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil that in motor body 1, the lower oilhole 2.2 of the 3rd oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2, the piston that compresses the 3rd oil hydraulic cylinder moves up, the piston rod of the 3rd oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the 3rd oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When d. in motor body 1, the piston rod of the 3rd oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil of coming in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2 to the lower oilhole 2.2 of the first oil hydraulic cylinder, the piston that compresses the first oil hydraulic cylinder moves up, and completes crank corresponding on bent axle and rotates one week;
3) wherein, the first output terminal interface 3.1 of the distributor oiling valve 3 corresponding with each oil hydraulic cylinder upper oil hole 2.1, by master gear, oiling valve gear driven oiling valve valve rod on bent axle, rotate, oiling valve valve rod is pressed on bent axle the first corresponding crank, the second crank, the 3rd crank and is rotated hexagonal angle, and the hydraulic oil by compressor is sequentially the upper cylinder half conveying liquid force feed of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder through the input end of distributor oiling valve 3;
Simultaneously, send the second input end interface 4.2 of fuel tap 4 with the distributor of the corresponding connection of oilhole 2.2 under each oil hydraulic cylinder, by master gear on bent axle, send fuel tap gear driven to send fuel tap valve rod to rotate, send fuel tap valve rod synchronous by the first crank corresponding on bent axle, the second crank, the 3rd crank, rotate hexagonal angle, sequentially connect lower oilhole 2.2 hydraulic oil of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder, by distributor, send the output terminal of fuel tap 4 to be delivered to fuel tank;
The second output terminal interface 3.2 with the distributor oiling valve 3 that under each oil hydraulic cylinder, oilhole 2.2 is corresponding, with the rotation of oiling valve valve rod, oiling valve valve rod sequentially rotates by the first crank, the second crank, the 3rd crank corresponding on bent axle the lower cylinder conveying liquid force feed that hexagonal angle is sequentially the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder;
Simultaneously, the distributor corresponding with each oil hydraulic cylinder upper oil hole 2.1 sent the first input end interface 4.1 of fuel tap 4, with the rotation of sending fuel tap valve rod, send fuel tap valve rod to rotate hexagonal angle by the first crank corresponding on bent axle, the second crank, the 3rd crank, sequentially connect upper oil hole 2.1 hydraulic oil of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder, by distributor, send the output terminal of fuel tap 4 to be delivered to fuel tank;
By the continuous oil transportation of 3 pairs of the first oil hydraulic cylinders of distributor oiling valve, the second oil hydraulic cylinder, the upper cylinder half of the 3rd oil hydraulic cylinder, lower cylinder, and distributor send 4 pairs of the first oil hydraulic cylinders of fuel tap, the second oil hydraulic cylinder, the upper cylinder half of the 3rd oil hydraulic cylinder, lower cylinder continuously to fuel tank group oil; The first crank, the second crank, the 3rd crank corresponding on the piston actuated bent axle of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder rotate continuously.
Claims (9)
1. a multiple-pass fluid power motor, it is characterized in that: comprising: motor body 1, hydraulic oil plug cylinder 2, distributor oiling valve 3, distributor are sent fuel tap 4, crank mechanism, compressor, fuel tank, in described motor body 1, be provided with the hydraulic oil plug cylinder 2 that is at least, the piston rod of described hydraulic oil plug cylinder 2 is articulated and connected by hemispherical head joint link lever 5 crank corresponding with crank mechanism of living; Stretch out and on the bent axle 6 of the outer one end of motor body 1 crank mechanism, be provided with the gear mechanism that distributor oiling valve 3 and distributor are sent fuel tap 4 synchronization motions, the bent axle 6 that stretches out the outer the other end crank mechanism of motor body 1 is connected with load;
The input end of described distributor oiling valve 3 is communicated with compressor by oil pipe, some interfaces 3.1 that distributor oiling valve the first output terminal arranges are communicated with the upper oil hole 2.1 of corresponding hydraulic oil plug cylinder 2 by oil pipe, and some interfaces 3.2 that the second output terminal of distributor oiling valve arranges are lower oilhole 2.2 connections with corresponding hydraulic oil plug cylinder 2 by oil pipe;
Described distributor sends the output terminal of fuel tap 4 to be communicated with fuel tank by oil pipe, distributor sends some interfaces 4.1 that fuel tap 4 first input ends arrange to be communicated with the upper oil hole 2.1 of corresponding hydraulic oil plug cylinder 2 by oil pipe, and some interfaces 4.2 that distributor send fuel tap 4 second input ends settings are lower oilhole 2.2 connections with corresponding hydraulic oil plug cylinder 2 by oil pipe.
2. a kind of multiple-pass fluid power motor according to claim 1, it is characterized in that: described bent axle linking mechanism comprises: bent axle 6, crank, the joint link lever 6 of living, on bent axle, be provided with and be at least a crank that hydraulic oil plug cylinder 2 is corresponding, the hinged joint link lever alive of each crank is connected with the piston rod of hydraulic oil plug cylinder 2, and the master gear 7 stretching out on motor body 1 outer crankshaft sends minute two gears 9 for fuel tap 4 to be connected with a joggle by a minute gear 8 of distributor oiling valve 3 with distributor; Equal subangle on 360 ° of circumference that the angle that on described bent axle, radially direct connect to be lived between the crank of joint link lever is bent axle.
3. a kind of multiple-pass fluid power motor according to claim 1, it is characterized in that: the hydraulic oil plug cylinder 2 in described motor body 1 is three hydraulic oil plug cylinders 2, piston rod 2.3 in three hydraulic oil plug cylinders 2 is articulated and connected with crank corresponding on bent axle by the hemispherical head joint link lever 5 of living, and the phase angle between each crank is 120 degree; Or be two hydraulic oil plug cylinders 2, the phase angle between each crank is 180 degree; Or be four hydraulic oil plug cylinders 2, the phase angle between each crank is 90 degree.
4. a kind of multiple-pass fluid power motor according to claim 1, it is characterized in that: described hydraulic oil plug cylinder 2, comprise: cylinder body 2.1, hydraulic piston 2.2, piston rod 2.3, described cylinder body is connected to form by upper cylinder cover, cylindrical shell 2.4, lower cylinder cap 2.5, and upper cylinder cover 2.7 is same one with the upper cover of motor body; The hydraulic piston 2.2 that is positioned at cylinder body is fixedly connected with piston rod 2.3 by bolt, and the seal arrangement 2.6 that the piston rod the other end stretches out lower cylinder cap is connected with the joint link lever of living, and the stroke that the interior hydraulic piston 2.2 of hydraulic oil plug cylinder 2 moves up and down is two strokes.
5. a kind of multiple-pass fluid power motor according to claim 1, it is characterized in that: valve rod and valve cylinder that described distributor oiling valve 3 has rotation form, valve cylinder is outside equipped with the input end interface 3.3 being communicated with compressor, some interfaces 3.1 of the uniform arrangement of the first output terminal, some interfaces 3.2 of the uniform arrangement of the second output terminal, on valve cylinder, the second output terminal interface 3.2 and the first output terminal interface 3.1 are non-radially setting, and differ 90 °;
On valve rod in valve cylinder, be provided with the valve rod cocircuit of the corresponding connection of input end interface 3.3, with the first output oil hole on the corresponding valve rod being communicated with of some interfaces 3.1 of the uniform arrangement of the first output terminal and with the second output oil hole on the corresponding valve rod being communicated with of some interfaces 3.2 of the uniform arrangement of the second output terminal; Valve rod cocircuit is led to some the second output oil holes on some the first output oil holes and valve rod on valve rod and is communicated with by oil; The valve shaft of the valve rod the other end is fixedly connected with oiling valve distribution gear by bearing, seal arrangement.
6. a kind of multiple-pass fluid power motor according to claim 1, it is characterized in that: some the first output oil holes on described distributor oiling valve 3 valve rods are two the first output oil holes, the angle of two the first output oil holes is 180 degree, two the second output oil holes and the corresponding setting of two the first output oil holes on valve rod;
Some the first output oil holes on described distributor oiling valve 3 valve rods or be three the first output oil holes, the angle of three the first output oil holes is 120 degree, three the second output oil holes and the corresponding setting of three the first output oil holes on valve rod.
7. a kind of multiple-pass fluid power motor according to claim 1, it is characterized in that: valve rod and valve cylinder that described distributor sends fuel tap 4 to have rotation form, valve cylinder is outside equipped with the output terminal interface 4.3 being communicated with fuel tank, some interfaces 4.1 of the uniform arrangement of first input end, some interfaces 4.2 of the uniform arrangement of the second input end, on valve cylinder, the second input end interface 4.2 is non-radially setting with first input end interface 4.1, and differs 90 °;
On valve rod in valve cylinder, be provided with the valve rod cocircuit of the corresponding connection of output terminal interface 4.3, with the first input oilhole on the corresponding valve rod being communicated with of some interfaces 4.1 of the uniform arrangement of first input end and with on the corresponding valve rod being communicated with of some interfaces 4.2 of the uniform arrangement of the second input end, second input oilhole; Valve rod cocircuit is communicated with some the second input oilholes on some the first input oilholes and valve rod on valve rod by oil duct; The valve shaft of the valve rod the other end is by bearing, seal arrangement and send fuel tap distribution gear to be fixedly connected with.
8. a kind of multiple-pass fluid power motor according to claim 1, it is characterized in that: described hemispherical head joint link lever 5 alive is fixedly connected with regulating connecting rod 5.1 by hemispherical head joint alive, bulb 5.3 and lock dog 5.4 that hemispherical head joint alive is coordinated by ball seat 5.2 connect and compose, the silk hole that ball seat 5.2 one end arrange is connected with the threads of lead screw of regulating connecting rod 5.1, and leading screw is provided with fastening locknut 5.5; Live joint link lever 5 or replace with pin formula connecting rod of described hemispherical head, pin formula connecting rod is fixedly connected with and forms with connecting rod by the hinged piston rod of pin.
9. a kind of method of work of multiple-pass fluid power motor as claimed in claim 1, it is characterized in that: utilize the low-power high pressure of oil hydraulic pump to drive the crank on bent axle that three oil hydraulic cylinder phase angles are 120 to apply hydraulic power, reach the rotation of bent axle: its step is as follows:
1) upper oil hole 2.1 of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder sequentially rotates the oil-feed of hexagonal angle order, acting from top to bottom by the first crank, the second crank, the 3rd crank corresponding on bent axle;
A. the hydraulic oil that the upper oil hole 2.1 of the first oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1 in motor body 1, the piston that compresses the first oil hydraulic cylinder moves down, the piston rod of the first oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the first oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor; Wherein connecting rod adopts hemispherical head joint link lever 5 alive or pin formula connecting rod;
When b. in motor body 1, the piston rod of the first oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod, the hydraulic oil that in motor body 1, the upper oil hole 2.1 of the second oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1, the piston that compresses the second oil hydraulic cylinder moves down, the piston rod of the second oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the second oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor;
When c. in motor body 1, the piston rod of the second oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil that in motor body 1, the upper oil hole 2.1 of the 3rd oil hydraulic cylinder is come in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1, the piston that compresses the 3rd oil hydraulic cylinder moves down, the piston rod of the 3rd oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the lower oilhole 2.2 of the 3rd oil hydraulic cylinder sends fuel tap 4 first input end corresponding interfaces 4.1 to be back to fuel tank by distributor;
When d. in motor body 1, the piston rod of the 3rd oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil of coming in by distributor oiling valve 3 first output terminal corresponding interfaces 3.1 to the upper oil hole 2.1 of the first oil hydraulic cylinder, the piston that compresses the first oil hydraulic cylinder moves down, and completes crank corresponding on bent axle and rotates one week;
2) the lower oilhole 2.1 of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder sequentially rotates the oil-feed of hexagonal angle order, acting from bottom to top by the first crank, the second crank, the 3rd crank corresponding on bent axle;
A. the hydraulic oil that the lower oilhole 2.2 of the first oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2 in motor body 1, the piston that compresses the first oil hydraulic cylinder moves up, the piston rod of the first oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the first oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When b. in motor body 1, the piston rod of the first oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod, the hydraulic oil that in motor body 1, the lower oilhole 2.2 of the second oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2, the piston that compresses the second oil hydraulic cylinder moves up, the piston rod of the second oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the second oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When c. in motor body 1, the piston rod of the second oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil that in motor body 1, the lower oilhole 2.2 of the 3rd oil hydraulic cylinder is come in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2, the piston that compresses the 3rd oil hydraulic cylinder moves up, the piston rod of the 3rd oil hydraulic cylinder rotates by crank corresponding on connecting rod band dynamic crankshaft, meanwhile, the upper oil hole 2.1 of the 3rd oil hydraulic cylinder sends fuel tap 4 second input end corresponding interfaces 4.2 to be back to fuel tank by distributor;
When d. in motor body 1, the piston rod of the 3rd oil hydraulic cylinder drives hinged crank to rotate 120 ° by connecting rod again, the hydraulic oil of coming in by distributor oiling valve 3 second output terminal corresponding interfaces 3.2 to the lower oilhole 2.2 of the first oil hydraulic cylinder, the piston that compresses the first oil hydraulic cylinder moves up, and completes crank corresponding on bent axle and rotates one week;
3) wherein, the first output terminal interface 3.1 of the distributor oiling valve 3 corresponding with each oil hydraulic cylinder upper oil hole 2.1, by master gear, oiling valve gear driven oiling valve valve rod on bent axle, rotate, oiling valve valve rod is pressed on bent axle the first corresponding crank, the second crank, the 3rd crank and is rotated hexagonal angle, and the hydraulic oil by compressor is sequentially the upper cylinder half conveying liquid force feed of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder through the input end of distributor oiling valve 3;
Simultaneously, send the second input end interface 4.2 of fuel tap 4 with the distributor of the corresponding connection of oilhole 2.2 under each oil hydraulic cylinder, by master gear on bent axle, send fuel tap gear driven to send fuel tap valve rod to rotate, send fuel tap valve rod synchronous by the first crank corresponding on bent axle, the second crank, the 3rd crank, rotate hexagonal angle, sequentially connect lower oilhole 2.2 hydraulic oil of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder, by distributor, send the output terminal of fuel tap 4 to be delivered to fuel tank;
The second output terminal interface 3.2 with the distributor oiling valve 3 that under each oil hydraulic cylinder, oilhole 2.2 is corresponding, with the rotation of oiling valve valve rod, oiling valve valve rod sequentially rotates by the first crank, the second crank, the 3rd crank corresponding on bent axle the lower cylinder conveying liquid force feed that hexagonal angle is sequentially the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder;
Simultaneously, the distributor corresponding with each oil hydraulic cylinder upper oil hole 2.1 sent the first input end interface 4.1 of fuel tap 4, with the rotation of sending fuel tap valve rod, send fuel tap valve rod to rotate hexagonal angle by the first crank corresponding on bent axle, the second crank, the 3rd crank, sequentially connect upper oil hole 2.1 hydraulic oil of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder, by distributor, send the output terminal of fuel tap 4 to be delivered to fuel tank;
By the continuous oil transportation of 3 pairs of the first oil hydraulic cylinders of distributor oiling valve, the second oil hydraulic cylinder, the upper cylinder half of the 3rd oil hydraulic cylinder, lower cylinder, and distributor send 4 pairs of the first oil hydraulic cylinders of fuel tap, the second oil hydraulic cylinder, the upper cylinder half of the 3rd oil hydraulic cylinder, lower cylinder continuously to fuel tank group oil; The first crank, the second crank, the 3rd crank corresponding on the piston actuated bent axle of the first oil hydraulic cylinder, the second oil hydraulic cylinder, the 3rd oil hydraulic cylinder rotate continuously.
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| CN201410210464.5A CN104047799B (en) | 2014-05-19 | 2014-05-19 | Multiple-stroke hydraulic engine and working method |
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| CN201410210464.5A CN104047799B (en) | 2014-05-19 | 2014-05-19 | Multiple-stroke hydraulic engine and working method |
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| CN104047799B CN104047799B (en) | 2017-02-15 |
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| CN105275733A (en) * | 2015-05-10 | 2016-01-27 | 大连海事大学 | Linear type piston rod hydraulic motor |
| CN105952835A (en) * | 2016-07-11 | 2016-09-21 | 广东省机械研究所 | Quick locking device of semispherical piston rod connecting end of damper |
| CN106837939A (en) * | 2017-03-08 | 2017-06-13 | 张海 | Hydraulic power system |
| CN112900203A (en) * | 2021-01-20 | 2021-06-04 | 张卫兵 | Road surface tamping device for highway engineering construction |
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| CN104047799B (en) | 2017-02-15 |
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