CN115324816B - Static balance type high water-based hydraulic motor and working method - Google Patents
Static balance type high water-based hydraulic motor and working method Download PDFInfo
- Publication number
- CN115324816B CN115324816B CN202210990498.5A CN202210990498A CN115324816B CN 115324816 B CN115324816 B CN 115324816B CN 202210990498 A CN202210990498 A CN 202210990498A CN 115324816 B CN115324816 B CN 115324816B
- Authority
- CN
- China
- Prior art keywords
- liquid inlet
- valve
- flow distribution
- liquid
- inlet end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 230000003068 static effect Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 278
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
- F03C1/0403—Details, component parts specially adapted of such engines
- F03C1/0435—Particularities relating to the distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/08—Distributing valve-gear peculiar thereto
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
The invention discloses a static balance type high water-based hydraulic motor and a working method thereof, and belongs to the field of motor flow distribution application. The device comprises a spring plunger, a five star wheel, a plurality of flow distribution valves matched with the five star wheel, two groups of flow distribution five star wheels for inlet and outlet, bearing rollers and eccentric wheels. When the device works, part of liquid inlet flow distribution valves are opened, the corresponding liquid return flow distribution valves are closed, after the plunger liquid inlet generates torque, the crankshaft rotates to drive the eccentric wheel to rotate, the crankshaft is rotated to be converted into five star wheels to translate under the action of the bearing rollers, and the ejector rod of the flow distribution valve is pushed to move up and down, so that the liquid inlet flow return flow distribution valve is opened and closed, and flow distribution is realized. The sealing performance is good, and the volumetric efficiency is high; the structure is compact, and the power-weight ratio of the motor can be improved; the five-star wheel flow distribution replaces the crankshaft flow distribution, the rotation of the crankshaft is converted into the translation of the five-star wheel, the translation ejector rod is pushed, the hydraulic impact caused by the ejector rod is reduced, the friction distance is reduced, and the spin blocking problem of the ejector rod is solved.
Description
Technical Field
The invention relates to a static balanced high-water-base hydraulic motor and a working method thereof, belonging to the field of high-pressure high-water-base hydraulic motors.
Background
The low-speed large-torque hydraulic motor has large output torque and low rotating speed, can directly drive a load to work, and the flow distribution mechanism is a key of high-efficiency, reliable, stable and continuous work of the hydraulic motor, and the flow distribution structure adopted by the existing high-water-base hydraulic motor is difficult to be suitable for high-water-base media. The current high water-based hydraulic motor flow distribution mode adopts a traditional oil motor flow distribution mode in principle: in the axial flow distribution motor, a high water-based medium is difficult to form an effective lubricating film between friction pairs, the friction pairs are easy to wear, radial compensation cannot be realized after the flow distribution shaft is worn, and the leakage is caused by overlarge fit clearance; the end face flow distribution is used for separating the high-pressure cavity from the low-pressure cavity by virtue of the valve plate, the valve plate is in a face friction state, and under the working condition of a high-water-base medium, a sealing water film is difficult to form between the valve plate and the rotary cylinder body, so that the abrasion is serious, and the system efficiency is low. Compared with end face flow distribution, the valve flow distribution has the advantages of reducing a pair of friction pairs, being strong in pollution resistance and good in sealing effect, and being capable of guaranteeing high volume efficiency under the working condition of high pressure. Therefore, the invention provides a novel five-star wheel valve flow distribution mechanism which can realize long-time stable operation of a high-water-base motor.
Disclosure of Invention
The invention aims to: aiming at the defects of the technology, the static balance type high water-based hydraulic motor and the working method thereof are provided, and the static balance type high water-based hydraulic motor has the advantages of simple structure, low failure rate and long service life.
In order to achieve the technical aim, the high water-based hydraulic motor comprises a motor shell, wherein a crankshaft is arranged in the motor shell, the middle part of the crankshaft is an eccentric end, a five-star wheel is arranged on the eccentric end of the crankshaft through a bearing roller b, the outer edge of the five-star wheel is of a regular pentagon structure, plunger cavities are respectively arranged on the five edges of the five-star wheel in the motor shell, a group of spring plungers are respectively arranged in each plunger cavity, the spring plungers are pressed on the five-star wheel, tapered roller bearings are arranged on the left and right of the eccentric end of the crankshaft, bearing retainer rings c are respectively arranged between the five-star wheel and the tapered roller bearings on two sides, an inner ring of each tapered roller bearing is sleeved on the crankshaft and is fixed and limited by a bearing retainer ring a, and an outer ring of each tapered roller bearing is fixed on the motor shell through the bearing retainer ring a and is limited;
The front end of the crankshaft extends out of the motor shell, and the rear end of the crankshaft is sealed in the motor shell;
The liquid inlet flow distribution mechanism comprises a liquid inlet end eccentric wheel which is arranged at the rear end of a crankshaft and is connected with the crankshaft through a flat key a for force transmission, a liquid inlet end flow distribution five star wheel is arranged along the outer circle of the liquid inlet end eccentric wheel through a liquid inlet end bearing roller, the outer edge of the liquid inlet end flow distribution five star wheel is of a pentagonal structure, a flow distribution valve installation cavity is correspondingly arranged on a motor shell on each side, and a group of liquid inlet end flow distribution valves are arranged in each flow distribution valve installation cavity;
The liquid return and flow distribution mechanism comprises a liquid return end eccentric wheel which is arranged at the front end of a crankshaft and is installed through a flat key b for force transmission, a liquid return end flow distribution five-star wheel is installed at the outer side of the liquid return end eccentric wheel through a liquid return end bearing roller, flow distribution valve installation cavities are correspondingly arranged on the motor shell on the five sides of the liquid return end flow distribution five-star wheel, and a group of liquid return end flow distribution valves are installed in each flow distribution valve installation cavity;
The liquid inlet end flow distribution valve and the liquid return end flow distribution valve have the same structure and comprise an upper cavity and a lower cavity which can be communicated or sealed, each plunger cavity in the motor shell is respectively provided with a flow passage which is respectively connected with a lower cavity of the liquid inlet end flow distribution valve and an upper cavity of the liquid return end flow distribution valve, the upper cavity of the liquid inlet end flow distribution valve is provided with a flow passage which is connected with a pump outlet in the motor shell, and the lower cavity of the liquid return end flow distribution valve is provided with a flow passage which is connected with an oil tank in the motor shell;
The positions of the five groups of spring plungers are respectively corresponding to and matched with the five groups of liquid inlet end distributing valves and the liquid return end distributing valves; when the liquid inlet end eccentric wheel connected with the liquid inlet end distributing valve is positioned at the highest position, the eccentric end in the crankshaft and the liquid inlet end eccentric wheel of the liquid inlet end distributing valve are synchronously positioned at the highest position, and the liquid return end eccentric wheel connected with the corresponding liquid return end distributing valve is positioned at the lowest position, and the difference between the liquid inlet end eccentric wheel and the liquid return end eccentric wheel is 180 degrees.
Further, the motor shell includes the front end cover of the casing of front and back both sides parallel arrangement and including the casing rear end cover of matching, is equipped with the casing between casing front end cover and the casing rear end cover, and spring plunger feed liquor end join in marriage the flow valve and return the flow valve and all set up in the casing.
Further, the spring plunger comprises a plunger sleeve and a spring guide matched with the plunger sleeve, a plunger end cover of the spring guide is arranged on the shell at the top of the spring guide and presses the spring guide, a return spring is arranged between the spring guide and the plunger sleeve, the bottom of the plunger sleeve is pressed on the five-star wheel through the return spring), meanwhile, the spring guide is also pressed in the plunger end cover by the return spring, the compression stroke of the return spring ensures that when the five-star wheel rotates along with a crankshaft, the plunger sleeve always keeps moving up and down in the installation position of the plunger cavity, the bottom of the plunger sleeve is provided with the spring guide and the return spring which are mutually extruded through the plunger end cover, the plunger sleeve is pressed on the five-star wheel through the return spring, and the return spring in the plunger sleeve is sequentially extruded and loosened when the five-star wheel rotates on the crankshaft, so that the plunger sleeve moves up and down, and the state of a flow passage is realized by opening and closing a liquid inlet end distributing valve and a liquid return end distributing valve.
Further, the liquid inlet end flow distribution valve and the liquid return end flow distribution valve have the same structure and comprise valve sleeves with through holes in the inner parts, the top parts of the valve seats are connected with a cartridge valve body through threads, the bottoms of the valve sleeves are connected with sealing plugs through threads, the middle parts of the through holes in the valve sleeves are provided with valve seats, and the valve seats divide the space in the valve sleeves into an upper cavity and a lower cavity; through holes are respectively formed in two sides of the upper cavity and the lower cavity; a valve core matched with the valve seat is arranged in the upper cavity, and a reset spring a is arranged between the valve core and the cartridge valve body; the sealing plug and the valve seat are provided with a guide hole in the middle, a translational ejector rod penetrating through the sealing plug and the valve seat is arranged in the lower cavity, the bottom of the translational ejector rod is arranged on the liquid inlet end flow distribution five-star wheel or the liquid return end flow distribution five-star wheel, the bottom of the translational ejector rod is provided with a reset spring b propping against the sealing plug, and the translational ejector rod is jacked up or lowered under the action of the reset spring b according to the rotation of a connected liquid inlet end eccentric wheel or liquid return end eccentric wheel, when the lower cavity is conducted, and when the lower cavity is closed.
Further, the translational ejector rod is of a variable diameter structure, the translational ejector rod penetrates through the lower valve seat to fix the plug and the upper half part of the valve seat to form a thin rod part, a gap is reserved between the thin rod part and the inner wall of the lower cavity, the lower half part of the translational ejector rod is a part in the sealing plug, and the lower half part is a thick rod part which is completely filled with the sealing plug hole.
Further, the eccentric wheel at the liquid inlet end and the eccentric wheel at the liquid return end are arranged in 180-degree phase difference, so that when the flow distribution valve at the liquid inlet end is opened, the flow distribution valve at the liquid return end is closed, emulsion enters the lower cavity through the upper cavity of the flow distribution valve at the liquid inlet end and enters the plunger cavity through the runner of the motor shell, the generated pressure pushes the plunger sleeve to generate radial force along the center of the eccentric wheel, the eccentric distance is a force arm, and torque is generated; when the liquid inlet end flow distribution valve is closed, the liquid return end flow distribution valve is opened, emulsion enters the upper cavity of the liquid return end flow distribution valve through the plunger cavity, enters the lower cavity and returns to the oil tank, and the liquid inlet and outlet process of the motor is realized.
A working method of a static balance type high water-based hydraulic motor comprises the following steps:
High-pressure base liquid is injected into the upper cavities of the five groups of liquid inlet end distributing valves on the liquid inlet end distributing five star wheels through the flow channels, at the moment, due to the structure of the liquid inlet end eccentric wheels, the parallel ejector rods of part of the liquid inlet end distributing valves jack up the valve core to enable the upper cavities and the lower cavities to be conducted in an open state, the parallel ejector rods of part of the liquid inlet end distributing valves are positioned at low positions, and the valve core seals the upper cavities and the lower cavities and is in a closed state;
The high-pressure base liquid flows to the corresponding spring plunger through the liquid inlet end distributing valve in the opening state, the spring plunger is in the oil inlet process and generates torque under the action of the high-pressure base liquid, the crank shaft is pushed by the five-star wheel to rotate, the liquid inlet end eccentric wheel and the liquid return end eccentric wheel are driven to generate eccentricity and rotate along with the eccentricity, a parallel ejector rod in the liquid return end distributing valve of the corresponding opening liquid inlet end distributing valve is enabled to push against the valve core to rise from a low position, the valve core is changed from the closing state to the opening state, and the opened liquid inlet end distributing valve is changed to the closing state;
when a group of liquid inlet end distributing valves are closed and the liquid return end distributing valves at corresponding positions are opened, the liquid return end distributing valves discharge high-pressure base liquid in the flow channel into the oil tank, and work of the spring plunger is completed once;
The five groups of spring plungers enable the crankshaft to continuously run under the pushing of the high-pressure base liquid in sequence, so that the corresponding five groups of liquid inlet end distributing valves and liquid return end distributing valves sequentially switch the opening and closing states in sequence, and the motor can continuously work.
Further, when the motor works, three groups of adjacent liquid inlet end distributing valves are required to be in an open state, and two groups of adjacent liquid inlet end distributing valves are required to be in a closed state.
The beneficial effects are that: the invention has simple structure, the distributing valve in the distributing mechanism adopts the plug-in type structural design, and for the static balance type, the crankshaft connecting rod and the crankshaft tilt cylinder hydraulic motor, the distributing shuttle valve can be arranged outside the motor, the fault of the distributing valve is easy to observe, the replacement is convenient, and the universality is high. The problem of the spinning problem of the ejector rod of the common valve is solved, so that the failure rate is reduced, and the service life of a motor is prolonged; part of liquid inlet valves are opened, the corresponding liquid return valves are closed, after the plunger liquid inlet generates torque, the crankshaft rotates to drive the eccentric wheel to rotate, the crankshaft is rotated to be converted into five-star-wheel translation under the action of the bearing rollers, the ejector rod of the flow distribution valve is pushed to move up and down, the flow distribution valve at the liquid inlet and return end is opened and closed, and therefore flow distribution is achieved; the flow distribution mechanism is used for a high water-based hydraulic motor, and has good tightness and high volumetric efficiency; the structure is compact, and the power-weight ratio of the motor can be improved; the five-star wheel flow distribution replaces the crankshaft flow distribution, the rotation of the crankshaft is converted into the translation of the five-star wheel, the translation ejector rod is pushed, the hydraulic impact caused by the ejector rod is reduced, the friction distance is reduced, and the spin blocking problem of the ejector rod is solved.
Drawings
FIG. 1 is a schematic illustration of the hydrostatic balanced high water base hydraulic motor split flow hydraulic principle of the present invention;
FIG. 2 is a schematic illustration of the structure of the static balanced high water base hydraulic motor of the present invention;
FIG. 3 is a schematic diagram of a five-star wheel type current distribution structure of the present invention;
FIG. 4 is a schematic diagram of the position structure of the five-star wheel and the translational ejector of the present invention.
In the figure: 1-spring guiding, 2-plunger sleeve, 3-plunger end cover, 4-return spring, 5-shell, 6-liquid inlet end distributing valve, 7-shell rear end cover, 8-liquid inlet end distributing five star wheel, 9-liquid inlet end bearing roller, 10-liquid inlet end eccentric wheel, 11-flat key a, 12-crankshaft, 13-bearing retainer a, 14-bearing retainer b, 15-conical roller bearing, 16-bearing roller b, 17-five star wheel, 18-bearing retainer c, 19-liquid return end distributing five star wheel, 20-liquid return end eccentric wheel, 21-flat key b, 22-liquid return end bearing roller, 23-liquid return end distributing valve and 24-shell front end cover;
601-cartridge valve body, 602-valve core, 603-reset spring a, 604-valve seat, 605-valve sleeve, 606-translational ejector rod, 607-sealing plug and 608-reset spring b.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
as shown in fig. 1, the present invention discloses a static balance type high water-based hydraulic motor, which is characterized in that: the novel planetary gear set comprises a motor shell, wherein a crankshaft 12 is arranged in the motor shell, the middle part of the crankshaft 12 is an eccentric end, a five-star wheel 17 is arranged on the eccentric end of the crankshaft 12 through a bearing roller b16, the outer edge of the five-star wheel 17 is of a regular pentagon structure, plunger cavities are respectively arranged on the five edges of the five-star wheel 17 in the motor shell, a group of spring plungers are respectively arranged in each plunger cavity, the spring plungers are pressed on the five-star wheel 17, tapered roller bearings 15 are arranged at the left and right sides of the eccentric end of the crankshaft 12, bearing retainer rings c18 are respectively arranged between the five-star wheel 17 and the tapered roller bearings 15 at the two sides, the inner ring of the tapered roller bearings 15 is sleeved on the crankshaft 12 and is fixedly limited by a bearing retainer ring a13, and the outer ring of the tapered roller bearings 15 is fixedly arranged on the motor shell through a bearing retainer ring a14 and is limited;
the front end and the rear end of the crankshaft 12 extend out of the motor shell, and the rear end of the crankshaft 12 is sealed in the motor shell;
the liquid inlet flow distribution mechanism comprises a liquid inlet end eccentric wheel 10 which is arranged at the rear end of a crankshaft 12 and is connected with the crankshaft 12 through a flat key a11 for force transmission, a liquid inlet end flow distribution five-star wheel 8 is arranged along the outer circle of the liquid inlet end eccentric wheel 10 through a liquid inlet end bearing roller 9, the outer edge of the liquid inlet end flow distribution five-star wheel 8 is of a pentagonal structure, a flow distribution valve installation cavity is correspondingly arranged on a motor shell on each side, and a group of liquid inlet end flow distribution valves 6 are arranged in each flow distribution valve installation cavity;
The liquid return and flow distribution mechanism comprises a liquid return end eccentric wheel 20 which is arranged at the front end of a crankshaft 12 and is installed through a flat key b21 for force transmission, a liquid return end flow distribution five-star wheel 19 is installed at the outer side of the liquid return end eccentric wheel 20 through a liquid return end bearing roller 22, flow distribution valve installation cavities are correspondingly arranged on the motor shell on the five sides of the liquid return end flow distribution five-star wheel 19, and a group of liquid return end flow distribution valves 23 are installed in each flow distribution valve installation cavity;
The liquid inlet end flow distribution valve 6 and the liquid return end flow distribution valve 23 have the same structure and comprise an upper cavity and a lower cavity which can be communicated or sealed, each plunger cavity in the motor shell is respectively provided with a flow passage which is respectively connected with the lower cavity of the liquid inlet end flow distribution valve 6 and the upper cavity of the liquid return end flow distribution valve 23, the upper cavity of the liquid inlet end flow distribution valve 6 is provided with a flow passage which is connected with a pump outlet in the motor shell, and the lower cavity of the liquid return end flow distribution valve 23 is provided with a flow passage which is connected with an oil tank in the motor shell;
The positions of the five groups of spring plungers are respectively corresponding to and matched with the positions of the five groups of liquid inlet end distributing valves 6 and the positions of the liquid return end distributing valves 23; when the edge liquid inlet eccentric wheel 10 connected with the liquid inlet distributing valve 6 is positioned at the highest position, the eccentric end in the crankshaft 12 and the edge liquid inlet eccentric wheel 10 of the liquid inlet distributing valve 6 are synchronously positioned at the highest position, and the liquid return eccentric wheel 20 connected with the corresponding liquid return distributing valve 23 is positioned at the lowest position, and the difference between the liquid inlet eccentric wheel 10 and the liquid return eccentric wheel 20 is 180 degrees.
The motor shell comprises a shell front end cover 24 and a shell rear end cover 7, wherein the front side and the rear side of the shell front end cover 24 are arranged in parallel, a shell 5 is arranged between the shell front end cover 24 and the shell rear end cover 7, and a spring plunger liquid inlet end distributing valve 6 and a liquid return end distributing valve 23 are both arranged in the shell 5.
The spring plunger comprises a plunger sleeve 2 and a spring guide 1 matched with the plunger sleeve, wherein the top of the spring guide 1 is arranged on a shell 5 and presses a plunger end cover 3 of the spring guide 1, a return spring 4 is arranged between the spring guide 1 and the plunger sleeve 2, the spring guide 1 presses the bottom of the plunger sleeve 2 on a five-star wheel 17 through the return spring 4, meanwhile, the spring guide 1 is also pressed in the plunger end cover 3 by the return spring 4, the compression stroke of the return spring 4 ensures that the plunger sleeve 2 always keeps moving up and down in the installation position of a plunger cavity along with the rotation of a crankshaft 12, the spring guide 1 and the return spring 4 which are mutually pressed are arranged at the bottom of the plunger sleeve 2 through the plunger end cover 3, the plunger sleeve 2 is pressed on the five-star wheel 17 by the return spring 4, and the return spring 4 in the plunger sleeve 2 is sequentially pressed and released when the five-star wheel 17 rotates on the crankshaft 12, so that the plunger sleeve 2 moves up and down, and the state of a flow channel is switched between a liquid distributing valve 6 at the opening and a liquid distributing valve 23 at the liquid inlet end.
The liquid inlet end distributing valve 6 and the liquid return end distributing valve 23 have the same structure and comprise a valve sleeve 605 with a through hole inside, the top of a valve seat 604 is connected with a cartridge valve body 601 through threads, the bottom of the valve sleeve 605 is connected with a sealing plug 607 through threads, the middle part of the through hole in the valve sleeve 605 is provided with the valve seat 604, and the valve seat 604 divides the inner space of the valve sleeve 605 into an upper cavity and a lower cavity; through holes are respectively formed in two sides of the upper cavity and the lower cavity; a valve core 602 matched with a valve seat 604 is arranged in the upper cavity, and a reset spring a603 is arranged between the valve core 602 and the cartridge valve body 601; a guide hole is arranged between the sealing plug 607 and the valve seat 604, a translational ejector rod 606 penetrating through the holes of the sealing plug 607 and the valve seat 604 is arranged in the lower cavity, the bottom of the translational ejector rod 606 is arranged on the liquid inlet end distributing five star wheel 8 or the liquid return end distributing five star wheel 19, a reset spring b608 propping against the sealing plug 607 is arranged at the bottom of the translational ejector rod 606, and the translational ejector rod 606 is jacked up or descended under the action of the reset spring b608 according to the rotation of the connected liquid inlet end eccentric wheel 10 or liquid return end eccentric wheel 20, when the lower cavity is conducted, and when the lower cavity is descended, the upper cavity and the lower cavity are closed.
The translational ejector rod 606 is of a variable diameter structure, the translational ejector rod 606 penetrates through the lower valve seat to fix the plug and the upper half part of the valve seat to form a thin rod part, a gap is reserved between the thin rod part and the inner wall of the lower cavity, the lower half part of the translational ejector rod is a part in the sealing plug, and the lower half part is a thick rod part which is completely filled with the sealing plug hole.
The eccentric wheel 10 at the liquid inlet end and the eccentric wheel 20 at the liquid return end are arranged in 180-degree phase difference, so that when the flow distribution valve 6 at the liquid inlet end is opened, the flow distribution valve 23 at the liquid return end is closed, emulsion enters the lower cavity through the upper cavity of the flow distribution valve 6 at the liquid inlet end and enters the plunger cavity through the runner of the motor shell, the generated pressure pushes the plunger sleeve 2 to generate radial force along the center of the eccentric wheel, the eccentricity is a force arm, and torque is generated; when the liquid inlet end distributing valve 6 is closed, the liquid return end distributing valve 23 is opened, and the emulsion enters the upper cavity of the liquid return end distributing valve 23 through the plunger cavity and enters the lower cavity to return to the oil tank, so that the liquid inlet and outlet process of the motor is realized.
A working method of a static balance type high water-based hydraulic motor comprises the following steps:
High-pressure base liquid is injected into the upper cavities of the five groups of liquid inlet end distributing valves 6 on the liquid inlet end distributing five star wheels 8 through flow channels, at the moment, due to the structure of the liquid inlet end eccentric wheels 10, part of the translational ejector rods 606 of the liquid inlet end distributing valves 6 jack up the valve cores 602 to enable the upper cavities and the lower cavities to be conducted in an open state, part of the translational ejector rods 606 of the liquid inlet end distributing valves 6 are positioned at a low position, and the valve cores 602 close the upper cavities and the lower cavities and are positioned in a closed state;
The high-pressure base liquid flows to the corresponding spring plunger through the liquid inlet end distributing valve 6 in the opening state, the spring plunger is in the oil inlet process and generates torque under the action of the high-pressure base liquid, the crankshaft 12 is pushed to rotate through the five star wheels 17, the liquid inlet end eccentric wheel 10 and the liquid return end eccentric wheel 20 are driven to generate eccentricity and rotate along with the eccentricity, so that the translational ejector rod 606 in the liquid return end distributing valve 23 of the corresponding opening liquid inlet end distributing valve 6 props against the valve core 602 to rise from the low position, the state is changed from the closing state to the opening state, and the opened liquid inlet end distributing valve 6 is changed to the closing state;
When a group of liquid inlet end distributing valves 6 are closed and liquid return end distributing valves 23 at corresponding positions are opened, the liquid return end distributing valves 23 discharge high-pressure base liquid in the flow channels into the oil tank, and work of a spring plunger is completed once;
The five groups of spring plungers are sequentially pushed by the high-pressure base liquid to enable the crankshaft 12 to continuously run, so that the corresponding five groups of liquid inlet end distributing valves 6 and liquid return end distributing valves 23 sequentially switch the opening and closing states, and the motor can continuously work.
The static balanced high water-based hydraulic motor adopts a five-star valve flow distribution mode as a flow distribution structure of the motor, and comprises a matched shell rear end cover 7 and a shell front end cover 24, a shell 5 is arranged between the shell rear end cover 7 and the shell front end cover 24, a plunger cavity is formed in the middle of the shell, a plunger sleeve 2, a return spring 4 and a spring guide 1 are arranged in the cavity, the plunger end cover 3 tightly presses the plunger sleeve 2 through the spring guide 1, the plunger sleeve 2 is tightly pressed on a five-star wheel 17, the five-star wheel 17 is mounted on a crankshaft 12 through a bearing roller b16, bearing retainers c18 are mounted at two ends of the five-star wheel 17, tapered roller bearings 15 are mounted at left and right of the eccentric end of the crankshaft 12, the inner ring of each tapered roller bearing 15 is sleeved on the crankshaft 12 and fixedly limited by a bearing retainer a13, and the outer ring of each tapered roller bearing is fixedly limited by a bearing retainer a14 and is connected to the shell 5. The front end and the rear end of the crankshaft 12 are respectively connected with a liquid return distributing mechanism and a liquid inlet distributing mechanism, a flat key a11 for force transmission is arranged at the outer side position of the rear end of the crankshaft 12, a liquid inlet eccentric wheel 10 is connected with the crankshaft 12 through the flat key a11 to realize rotary motion, a liquid inlet bearing roller 9 is arranged along the outer circle of the liquid inlet eccentric wheel 10, a liquid inlet distributing five star wheel 8 is sleeved on the liquid inlet bearing roller 9 to convert the rotary motion into sliding motion, a translational ejector rod 606 of the liquid inlet distributing valve 6 is pressed on the liquid inlet distributing five star wheel by a spring, the translational ejector rod 606 of the liquid inlet distributing valve 6 realizes up-and-down motion, an upper runner of the liquid inlet distributing valve 6 is connected with a pump outlet, and a lower runner is connected with a plunger cavity; similarly, a flat key b21 for force transmission is arranged at the outer side of the front end of the crankshaft 12, a liquid return end eccentric wheel 20 is connected with the crankshaft 12 through the flat key b21 to realize rotary motion, a liquid return end bearing roller 22 is arranged along the outer circle of the liquid return end eccentric wheel 20, a liquid return end flow distribution five star wheel 19 is sleeved on the liquid return end bearing roller 22 to convert rotary motion into sliding motion, a translational ejector rod of a liquid return end flow distribution valve 23 realizes up-down motion, the liquid return end flow distribution valve 23 is inserted in a motor shell, an upper runner of the liquid return end flow distribution valve 23 is connected with a plunger cavity, and a lower runner is connected with a pump outlet. The liquid inlet end eccentric wheel 10 and the liquid return end eccentric wheel 20 are installed in 180-degree phase difference, when the liquid inlet end flow distribution valve 6 is opened, the liquid return end flow distribution valve 23 is closed, emulsion enters the lower cavity through the upper cavity of the liquid inlet end flow distribution valve 6 and enters the plunger cavity, and the generated pressure pushes the plunger sleeve 2 to generate torque; when the liquid inlet end distributing valve 6 is closed, the liquid return end distributing valve 23 is opened, and the emulsion enters the upper cavity of the liquid return end distributing valve 23 through the plunger cavity and enters the lower cavity to return to the oil tank; thereby realizing the flow distribution and the liquid inlet and outlet process of the motor.
As shown in fig. 2 and fig. 4, the design of the distributing valve is installed on the motor shell, the translational ejector rod of the distributing valve is pressed on the distributing five star wheel by a spring, the liquid inlet end distributing valve 1, the liquid inlet end distributing valve 2 and the liquid inlet end distributing valve 3 are closed, the liquid inlet end distributing valve 4 and the liquid inlet end distributing valve 5 are opened, the high water-based liquid enters the distributing valve and then enters the plunger cavity 4, the plunger cavity 5 and the plunger cavity 4 generate torque, so that the bottom of the plunger is contacted with the five star wheel, and the motor crankshaft is pushed to rotate for doing work; the liquid return end distributing valve 1, the liquid return end distributing valve 2 and the liquid return end distributing valve 3 are opened for liquid return, the liquid inlet end distributing valve 4 and the liquid inlet end distributing valve 5 are closed, the plunger 1, the plunger 2 and the plunger 3 are used for discharging oil under the action of a crankshaft, and the oil is circulated in this way, and the oil is discharged by 2 or 3 plungers in sequence.
As shown in fig. 3, the fluid inlet port distributing valve 6 is installed outside the motor housing in a plug-in mode, the upper cavity of the fluid inlet port distributing valve 6 is connected with the pump outlet, the upper cavity of the fluid inlet port distributing valve 6 is connected with the plunger cavity, the valve seat 604 is connected with the cartridge valve body 601 through threads, the reset spring a603 is installed inside the inner hole of the valve core 602, the reset spring a603 compresses the valve core 602 to compress the valve seat 604, the cartridge valve body 601 is connected with the valve sleeve 605 through threads, the sealing plug 607 is connected with the valve sleeve 605 through threads, the bottom of the sealing plug 607 is provided with a guide hole, the translational ejector rod 606 is of a variable diameter structure, the translational ejector rod 606 passes through the lower valve seat fixing plug and the upper half part of the valve seat to form a thin rod translational part, a gap is reserved between the thin rod part and the inner wall of the lower cavity, the lower half part of the translational ejector rod is a part in the sealing plug, the lower half part is a thick rod part completely filled with a sealing plug hole, and the ejector rod 606 is compressed on the five star wheel 8 of the fluid inlet port distributing valve through the reset spring b 608. The five-star wheel flow distribution mechanism comprises a liquid inlet end flow distribution five-star wheel 8, a liquid inlet end bearing roller 9, a liquid inlet end eccentric wheel 10 and a flat key a11. The liquid inlet end eccentric wheel 10 is connected with the crankshaft through a flat key a11 to realize force transmission and rotation, a liquid inlet end bearing roller 9 is arranged along the excircle of the liquid inlet end eccentric wheel, and a liquid inlet end distributing five star wheel 8 is sleeved on the liquid inlet end bearing roller 9.
Claims (8)
1. A static balanced high water base hydraulic motor, characterized in that: the novel planetary gear set comprises a motor shell, wherein a crankshaft (12) is arranged in the motor shell, the middle part of the crankshaft (12) is an eccentric end, a five-star wheel (17) is arranged on the eccentric end of the crankshaft (12) through a bearing roller b (16), the outer edge of the five-star wheel (17) is of a regular pentagon structure, five sides of the five-star wheel (17) are respectively and correspondingly provided with plunger cavities in the motor shell, a group of spring plungers are respectively arranged in each plunger cavity and are pressed on the five-star wheel (17), tapered roller bearings (15) are arranged on the left and right of the eccentric end of the crankshaft (12), bearing retainer rings c (18) are respectively arranged between the five-star wheel (17) and the tapered roller bearings (15) on two sides, the inner ring of the tapered roller bearings (15) is sleeved on the crankshaft (12) and is fixedly limited by a bearing retainer ring a (13), and the outer ring of the tapered roller bearings (15) are fixed on the motor shell through a bearing retainer ring b (14) and are limited;
the front end and the rear end of the crankshaft (12) extend out of the motor shell, and the rear end of the crankshaft (12) is sealed in the motor shell;
The liquid inlet flow distribution mechanism comprises a liquid inlet end eccentric wheel (10) which is arranged at the rear end of a crankshaft (12) and is connected with the crankshaft (12) through a flat key a (11) for force transmission, a liquid inlet end flow distribution five star wheel (8) is arranged along the outer circle of the liquid inlet end eccentric wheel (10) through a liquid inlet end bearing roller (9), the outer edge of the liquid inlet end flow distribution five star wheel (8) is of a pentagonal structure, each side of the liquid inlet end flow distribution five star wheel is correspondingly provided with a flow distribution valve installation cavity on a motor shell, and a group of liquid inlet end flow distribution valves (6) are arranged in each flow distribution valve installation cavity;
The liquid return and flow distribution mechanism comprises a liquid return end eccentric wheel (20) which is arranged at the front end of a crankshaft (12) and is installed through a flat key b (21) for force transmission, a liquid return end flow distribution five star wheel (19) is installed outside the liquid return end eccentric wheel (20) through a liquid return end bearing roller (22), five sides of the liquid return end flow distribution five star wheel (19) are respectively and correspondingly provided with a flow distribution valve installation cavity on a motor shell, and a group of liquid return end flow distribution valves (23) are installed in each flow distribution valve installation cavity;
The liquid inlet end flow distribution valve (6) and the liquid return end flow distribution valve (23) have the same structure and respectively comprise an upper cavity and a lower cavity which can be communicated or sealed, each plunger cavity in the motor shell is respectively provided with a flow channel, each plunger cavity is respectively connected with the lower cavity of the liquid inlet end flow distribution valve (6) and the upper cavity of the liquid return end flow distribution valve (23), the upper cavity of the liquid inlet end flow distribution valve (6) is provided with a flow channel connected with a pump outlet in the motor shell, and the lower cavity of the liquid return end flow distribution valve (23) is provided with a flow channel connected with an oil tank in the motor shell;
the positions of the five groups of spring plungers are respectively corresponding to and matched with the positions of the five groups of liquid inlet end distributing valves (6) and the positions of the liquid return end distributing valves (23); when the liquid inlet end eccentric wheel (10) connected with the liquid inlet end distributing valve (6) is positioned at the highest position, the eccentric end in the crankshaft (12) and the liquid inlet end eccentric wheel (10) connected with the liquid inlet end distributing valve (6) are synchronously positioned at the highest position, and the liquid return end eccentric wheel (20) connected with the corresponding liquid return end distributing valve (23) is positioned at the lowest position, wherein the difference between the liquid inlet end eccentric wheel (10) and the liquid return end eccentric wheel (20) is 180 degrees;
The liquid inlet end flow distribution valve (6) and the liquid return end flow distribution valve (23) have the same structure and comprise valve sleeves (605) with through holes in the inner parts, cartridge valve bodies (601) are connected to the tops of valve seats (604) through threads, sealing plugs (607) are connected to the bottoms of the valve sleeves (605) through threads, valve seats (604) are arranged in the middle parts of the through holes in the valve sleeves (605), and the valve seats (604) divide the inner space of the valve sleeves (605) into an upper cavity and a lower cavity; through holes are respectively formed in two sides of the upper cavity and the lower cavity; a valve core (602) matched with the valve seat (604) is arranged in the upper cavity, and a return spring a (603) is arranged between the valve core (602) and the cartridge valve body (601); a guide hole is arranged between the sealing plug (607) and the valve seat (604), a translational ejector rod (606) penetrating through the holes of the sealing plug (607) and the valve seat (604) is arranged in the lower cavity, the bottom of the translational ejector rod (606) is arranged on the liquid inlet end distributing five-star wheel (8) or the liquid return end distributing five-star wheel (19), and a reset spring b (608) propping against the sealing plug (607) is arranged at the bottom of the translational ejector rod (606).
2. The static balanced high water-based hydraulic motor according to claim 1, wherein: the motor shell comprises a front shell end cover (24) and a rear shell end cover (7) which are arranged in parallel on the front side and the rear side, a shell (5) is arranged between the front shell end cover (24) and the rear shell end cover (7), and a liquid inlet end distributing valve (6) and a liquid return end distributing valve (23) are both arranged in the shell (5).
3. The static balanced high water-based hydraulic motor according to claim 2, wherein: the spring plunger comprises a plunger sleeve (2) and a spring guide (1) matched with the plunger sleeve, a plunger end cover (3) pressing the top of the spring guide (1) is arranged on a shell (5), a return spring (4) is arranged between the spring guide (1) and the plunger sleeve (2), the spring guide (1) tightly presses the bottom of the plunger sleeve (2) on a five-star wheel (17) through the return spring (4), meanwhile, the spring guide (1) is tightly pressed in the plunger end cover (3) by the return spring (4), the compression stroke of the return spring (4) ensures that the five-star wheel (17) always keeps the plunger sleeve (2) to move up and down in the installation position of a plunger cavity along with the rotation of a crankshaft (12), the bottom of the plunger sleeve (2) is provided with the spring guide (1) and the return spring (4) which are mutually pressed through the plunger end cover (3), the plunger sleeve (2) is tightly pressed on the five-star wheel (17) through the return spring (4), and the spring (4) in the plunger sleeve (2) is sequentially pressed and loosened when the five-star wheel (17) rotates on the crankshaft (12), so that the plunger sleeve (2) is enabled to move up and down in a liquid distribution state and a liquid distribution valve (23) is switched to realize the state.
4. The static balanced high water-based hydraulic motor according to claim 1, wherein: the translational ejector rod (606) is lifted up or lowered under the action of the reset spring b (608) according to the rotation of the connected liquid inlet end eccentric wheel (10) or the liquid return end eccentric wheel (20), when the translational ejector rod is lifted up, the upper cavity and the lower cavity are conducted, and after the translational ejector rod is lowered down, the upper cavity and the lower cavity are closed.
5. The static balanced high water-based hydraulic motor according to claim 4, wherein: the translational ejector rod (606) is of a variable diameter structure.
6. The static balanced high water-based hydraulic motor according to claim 1, wherein: the liquid inlet end eccentric wheel (10) and the liquid return end eccentric wheel (20) are arranged in 180-degree phase difference, so that when the liquid inlet end flow distribution valve (6) is opened, the liquid return end flow distribution valve (23) is closed, and emulsion enters the lower cavity through the upper cavity of the liquid inlet end flow distribution valve (6) and enters the plunger cavity through the runner of the motor shell; when the liquid inlet end flow distribution valve (6) is closed, the liquid return end flow distribution valve (23) is opened, emulsion enters the upper cavity of the liquid return end flow distribution valve (23) through the plunger cavity, enters the lower cavity and returns to the oil tank, and the liquid inlet and outlet process of the motor is realized.
7. A method of operating a static balanced high water-based hydraulic motor as claimed in claim 1, characterized by the steps of:
the high-pressure base liquid is injected into the upper cavities of five groups of liquid inlet end distributing valves (6) on the liquid inlet end distributing five star wheels (8) through a flow channel, at the moment, due to the structure of the liquid inlet end eccentric wheel (10), part of translational ejector rods (606) of the liquid inlet end distributing valves (6) jack up valve cores (602) so that the upper cavities and the lower cavities are conducted and are in an open state, and part of translational ejector rods (606) of the liquid inlet end distributing valves (6) are in a low position, and the valve cores (602) close the upper cavities and the lower cavities and are in a closed state;
The high-pressure base liquid flows to the corresponding spring plunger through the liquid inlet end distributing valve (6) in the opening state, the spring plunger is in the oil inlet process and generates torque under the action of the high-pressure base liquid, the crankshaft (12) is pushed to rotate through the five star wheels (17), the liquid inlet end eccentric wheel (10) and the liquid return end eccentric wheel (20) are driven to generate eccentric distance and rotate in a follow-up manner, a translational ejector rod (606) in the liquid return end distributing valve (23) of the corresponding opening liquid inlet end distributing valve (6) is enabled to push against the valve core (602) to rise from a low position, the valve core is changed from the closing state to the opening state, and the opening liquid inlet end distributing valve (6) is changed to the closing state;
When a group of liquid inlet end distributing valves (6) are closed, and liquid return end distributing valves (23) at corresponding positions are opened, the liquid return end distributing valves (23) discharge high-pressure base liquid in the flow channels into the oil tank, so that primary spring plunger work is completed;
the five groups of spring plungers are driven by the high-pressure base liquid in sequence to enable the crankshaft (12) to continuously operate, so that the corresponding five groups of liquid inlet end distributing valves (6) and liquid return end distributing valves (23) are sequentially switched to be in an open-close state in sequence, and the motor can continuously operate.
8. The method of operation of claim 7, wherein: when the motor works, three groups of adjacent liquid inlet end distributing valves (6) are always in an open state, and two groups of adjacent liquid inlet end distributing valves (6) are in a closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210990498.5A CN115324816B (en) | 2022-08-18 | 2022-08-18 | Static balance type high water-based hydraulic motor and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210990498.5A CN115324816B (en) | 2022-08-18 | 2022-08-18 | Static balance type high water-based hydraulic motor and working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115324816A CN115324816A (en) | 2022-11-11 |
| CN115324816B true CN115324816B (en) | 2024-07-05 |
Family
ID=83924598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210990498.5A Active CN115324816B (en) | 2022-08-18 | 2022-08-18 | Static balance type high water-based hydraulic motor and working method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115324816B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696921A (en) * | 2013-12-13 | 2014-04-02 | 西安交通大学 | Valve flow distribution radial plunger hydraulic pump adopting hydraulic pressure return stroke |
| CN114857113A (en) * | 2022-04-18 | 2022-08-05 | 中国矿业大学 | Plug-in normally open shuttle valve for high-water-base motor flow distribution and application |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102574A (en) * | 1985-04-01 | 1986-07-02 | 山西农业大学 | Static balancing and energy recovery type oil motor |
| JP3138791B2 (en) * | 1993-07-16 | 2001-02-26 | 本田技研工業株式会社 | Hydrostatic continuously variable transmission |
-
2022
- 2022-08-18 CN CN202210990498.5A patent/CN115324816B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696921A (en) * | 2013-12-13 | 2014-04-02 | 西安交通大学 | Valve flow distribution radial plunger hydraulic pump adopting hydraulic pressure return stroke |
| CN114857113A (en) * | 2022-04-18 | 2022-08-05 | 中国矿业大学 | Plug-in normally open shuttle valve for high-water-base motor flow distribution and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115324816A (en) | 2022-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114857113B (en) | Plug-in normally open shuttle valve for high-water-base motor flow distribution and application | |
| CN202833001U (en) | Swash plate type rotary valve flow distributing pure water plunger pump | |
| CN109441749B (en) | Shaft valve composite flow distribution method of water hydraulic plunger pump | |
| CN101832243A (en) | Axial water pressure plunger pump with easy maintenance | |
| CN103233873A (en) | External-rotor radial plunger hydraulic pump integrated with motors | |
| CN101418784A (en) | Positive and negative rotating axial plunger pump | |
| CN103696921A (en) | Valve flow distribution radial plunger hydraulic pump adopting hydraulic pressure return stroke | |
| CN102155367A (en) | Fully-balanced type double-row radial plunger pump | |
| CN112032009B (en) | Valve flow distribution axial plunger pump | |
| CN108278186A (en) | A kind of two-dimentional plunger hydraulic pamp of water-oil separating formula space cam transmission | |
| CN111997856A (en) | Two-dimensional piston pump with series-parallel structure | |
| CN201771701U (en) | Inclined disc type valve flow distribution high pressure pure water plunger pump | |
| CN101949374A (en) | Swash plate type valve distributing high-pressure pure water plunger pump | |
| CN108301999A (en) | A kind of two-dimentional plunger pump of space cam transmission | |
| CN113266610A (en) | Radial plunger hydraulic device adopting hydraulic control one-way valve for flow distribution and working method | |
| CN109653973B (en) | Water lubrication shaft valve composite flow distribution radial plunger pump | |
| CN115324816B (en) | Static balance type high water-based hydraulic motor and working method | |
| CN201786591U (en) | Axial water-pressure plunger pump easy to be repaired | |
| CN202690344U (en) | Full-water lubricating valve distributing plunger water pump | |
| CN111946580B (en) | Digital variable hydraulic motor radial plunger pump | |
| CN108194298B (en) | A kind of two-dimentional plunger hydraulic pamp of water-oil separating formula rolling wheel guide rails transmission | |
| CN108691740B (en) | Radial force balance double-sloping cam plate plunger type hydraulic motor pump | |
| CN216950720U (en) | Tandem type large-displacement shield hydraulic pump | |
| CN114992184A (en) | Two-way cartridge valve flow distribution radial plunger hydraulic device controlled by rotating shaft and working method | |
| CN201292923Y (en) | Positive and negative rotating axial plunger pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |