CN105332970A - Variable-damping oil cylinder - Google Patents
Variable-damping oil cylinder Download PDFInfo
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- CN105332970A CN105332970A CN201510795182.0A CN201510795182A CN105332970A CN 105332970 A CN105332970 A CN 105332970A CN 201510795182 A CN201510795182 A CN 201510795182A CN 105332970 A CN105332970 A CN 105332970A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a variable-damping oil cylinder and solves the technical problems that the structure design of the oil cylinder of the prior art is unreasonable, the leakage easily occurs and the service life is short. The variable-damping oil cylinder comprises a cylinder body with a piston cavity, wherein a piston capable of dividing the piston cavity into a first sub cavity and a second sub cavity is arranged in the cylinder body; the piston is connected with a rotation shaft capable of driving the piston to move forth and back in the piston cavity; an oil outlet channel capable of communicating the first sub cavity with the second sub cavity is formed in the piston; a one-way control mechanism capable of sealing or conducting the oil outlet channel when the piston moves forth and back is arranged in the oil outlet channel; the cylinder body is opened with an oil returning channel capable of communicating the first sub cavity with the second sub cavity and enabling hydraulic oil in the second sub cavity to return to the first sub cavity when the oil outlet channel is sealed. The variable-damping oil cylinder has the advantage of long service life.
Description
Technical field
The present invention relates to a kind of damping adjustable oil cylinder.
Background technique
Body-building is roughly divided into apparatus and takes exercise and the exercise of non-apparatus, the various apparatuses comprising sports training equipment and fitness training equipment tempered by apparatus, at present, how a lot of sports training equipments can install some oil cylinders, such as: damping oil cylinder and angling cylinder etc., in order to injured when physical culture simplifies the structure of training equipment and prevents training athlete, for this reason, people have carried out long-term exploration, propose various solution.
Such as, Chinese patent literature discloses a kind of oil cylinder of exercising machine [application number: 94224893.7], connecting ring is provided with on the top of cylinder body, connecting ring is made with attachment hole, attachment hole and oil pipe road match, and can relatively rotate, annular recess in attachment hole is communicated with oil cylinder with oil pipe road, the other end in oil pipe road communicates with one end of control switch, the other end of control switch is connected with another oil pipe road and oil cylinder, the piston rod of two oil cylinders is connected with left and right foot treadle respectively, the strength size that regulation control switch adjustable is taken exercises.
Above-mentioned scheme improves prior art to a certain extent, particularly by the strength size that regulation control switch adjustable is taken exercises, but there is following defect in the program: the structural design of oil cylinder is unreasonable, easy appearance is revealed, and causes its working life short.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of damping adjustable oil cylinder, this oil cylinder has the feature of length service time.
For achieving the above object, present invention employs following technical proposal: this damping adjustable oil cylinder comprises the cylinder body with piston cavity, the piston that this piston cavity can be separated into the first sub-cavity and the second sub-cavity is provided with in cylinder body, described piston is connected with the turning axle that it can be driven to move back and forth back and forth in piston cavity, it is characterized in that, described piston is provided with can by the oil discharge passage of the described first sub-cavity and the second sub-cavity connects, be provided with in oil discharge passage and close when piston moves around or the irreversible control of this oil discharge passage of conducting, cylinder body offers and can the hydraulic oil in the second sub-cavity can be made when oil discharge passage is closed the described first sub-cavity and the second sub-cavity connects to return the drainback passage of the first sub-cavity, be provided with in drainback passage when turning axle driven plunger to the second sub-cavity side move and oil discharge passage is closed time can apply the damping throttling pressure-regulating device of damping force to turning axle, described cylinder body comprises working part and assembly department, working part is provided with the through hole run through, assembly department is separately positioned on working part two ends, the through hole of assembly department and working part forms above-mentioned piston cavity, assembly department is provided with mounting groove in the form of a ring, be provided with seal ring in mounting groove, seal ring can be resisted against in assembly department and working part respectively.Oil discharge passage is arranged on the axial centre of piston, this damping throttling pressure-regulating device can make to produce high pressure in the second sub-cavity, thus produce damping force and react on turning axle, namely turning axle when this damping force rotates turning axle thus drives piston to move to the second sub-cavity side has the opposite effect, thus ensures use safety; Adopt this structure, can reduce the difficulty of processing of cylinder body, and prevent the hydraulic oil in cylinder body from revealing between assembly department and working part, improve the working life of oil cylinder, service time is long.
Cardinal principle of the present invention is as follows: when turning axle driven plunger to the second sub-cavity side move and oil discharge passage is closed time, hydraulic oil in second sub-chamber is by the effect of damping throttling pressure-regulating device, make to produce high pressure in the second sub-chamber, this high pressure passes to turning axle by piston, thus a damping force is applied to turning axle, not only ensure use safety, also further simplify the structure of complete machine; When turning axle driven plunger to the first sub-cavity side move and oil discharge passage is switched on time, the first sub-cavity hydraulic oil is back to the second sub-chamber, thus oil cylinder completes once flexible operation, meets the development trend of current social technology.
In above-mentioned damping adjustable oil cylinder, the material of described working part is aluminium.
In above-mentioned damping adjustable oil cylinder, the material of described assembly department is iron.
Adopt above material, adopt ferro-aluminum to combine structural design, improve the heat dispersion of oil cylinder, solve oil cylinder in running, produce the too high problem of temperature, achieve the automatic adjustment of oil cylinder temperature in the course of the work, extend the working life of oil cylinder.
In above-mentioned damping adjustable oil cylinder, described damping throttling pressure-regulating device comprises damping hole, the oil inlet end of damping hole and the second sub-cavity connects, the oil outlet end of damping hole is communicated with drainback passage, described damping hole internal diameter is less than or equal to the internal diameter of drainback passage, and cylinder body is provided with the throttling pressure regulator valve for controlling damping hole oil pump capacity.The size of the damping force of the adjustable turning axle of this structure, ensures the stable rotation of turning axle.
In above-mentioned damping adjustable oil cylinder, described throttling pressure regulator valve comprises axial restraint and circumferential rotating adjustable lever, adjustable lever is provided with throttle orifice, and the oil inlet end of this throttle orifice is communicated with damping hole oil inlet end, and the oil outlet end of throttle orifice is communicated with damping hole oil outlet end.This structure is easy to adjust and simple, is easy to manipulation and holds.
In above-mentioned damping adjustable oil cylinder, described cylinder body is provided with the positioning hole be communicated with damping hole, cylinder body is also provided with the ring-shaped step being positioned at positioning hole aperture place, described adjustable lever one end inserts in positioning hole, ring-shaped step is installed with the pressing plate be enclosed within outside adjustable lever, adjustable lever is arranged with some O RunddichtringOs laid respectively between adjustable lever and positioning hole, between pressing plate and adjustable lever, is provided with the disconnecting prevention structure that can prevent this adjustable lever from axially departing from pressing plate.
Disconnecting prevention structure comprises the annular abutment portion be arranged on pressing plate, and adjustable lever is provided with the annular anticreep face abutting in upper-end surface, annular abutment portion, can ensure that adjustable lever not easily departs from pressing plate like this, thus ensures structural strength and working life.
In above-mentioned damping adjustable oil cylinder, described irreversible control comprises the one-way valve seat being arranged on oil discharge passage oil inlet end, the center hole be communicated with oil discharge passage is had in one-way valve seat axial centre, spring is provided with in oil discharge passage, this spring is resisted against on the annular prevent surface in oil discharge passage near one end of the second sub-cavity, be provided with spherical occluding body between the other end of spring and one-way valve seat, described center hole internal diameter is less than the diameter of spherical occluding body.When turning axle driven plunger moves to the first sub-cavity side, the hydraulic oil in the first sub-cavity will wash spherical occluding body open makes hydraulic oil enter in the second sub-chamber.
In above-mentioned damping adjustable oil cylinder, the center hole of described one-way valve seat has circular cone or matches with described spherical occluding body profile arc shaped surface near one end of spherical occluding body.This structure can ensure pressure stability in the first sub-cavity and the second sub-cavity and working efficiency.Further, this spherical occluding body is made up of metallic material.
In above-mentioned damping adjustable oil cylinder, described piston both end sides portion is arranged with the piston oil seal between piston and inboard wall of cylinder block respectively, described piston oil seal is fixed on piston respectively by oil sealing fixed plate, and piston is also arranged with some O-ring seals laid respectively between piston and inboard wall of cylinder block.This structure can ensure pressure stability in the first sub-cavity and the second sub-cavity and working efficiency.
In above-mentioned damping adjustable oil cylinder, described turning axle axial restraint and circumference can be rotated by opposing cylinder, and the power intake of this turning axle extends to outside cylinder body, the rotating shaft oil sealing being enclosed within turning axle power intake is provided with in cylinder body, turning axle is provided with the gear being positioned at cylinder body, piston is provided with the tooth bar be meshed with described gear.This structure has Power output and stablizes and velocity ratio advantages of higher, ensures the practicability of training device.
In above-mentioned damping adjustable oil cylinder, described cylinder body is provided with the accumulation of energy lubricating cup and repairing hole that are communicated with piston cavity respectively.In use, when oil cylinder is in idle running, carry out repairing by repairing hole, ensure the normal operation of oil cylinder.
In above-mentioned damping adjustable oil cylinder, described cylinder body is also provided with outward can to the fluid infusion mechanism of replenisher force feed in repairing hole, fluid infusion mechanism comprises fuel reserve tank, delivery pipe and transfer pump, fuel reserve tank is connected by delivery pipe with repairing hole, transfer pump is arranged in delivery pipe, is also provided with the one-way valve that can make hydraulic oil one-way flow in delivery pipe.Open transfer pump, the hydraulic oil in fuel reserve tank adds in the piston cavity of cylinder body by delivery pipe by transfer pump, and fluid infusion easily and fast.
In above-mentioned damping adjustable oil cylinder, described adjustable lever is provided with adjusting knob away from one end of cylinder body, adjusting knob and one can drive its driving mechanism rotated to be connected, driving mechanism comprises motor and driving wheel, motor is fixed on cylinder body, driving wheel is fixed on the output shaft of motor, and the side of adjusting knob has the engaging piece be meshed with driving wheel.As can be seen from this structure, drive driving wheel to rotate by the output shaft of motor, driving wheel drives adjusting knob to rotate, and adjusting knob drives adjustable lever to rotate, thus the size of adjustment damping force, regulate precisely.
Described adjustable lever is provided with the elevator mechanism that can regulate its oscilaltion away from one end of cylinder body; Described elevator mechanism comprises cylinder, guide pad, guide rail and pushing block, guide rail is fixed on cylinder body by support, guide pad is arranged in guide rail, cylinder is fixed on support, the piston rod of cylinder straight up, piston rod end and the pushing block of cylinder fix, pushing block energy and adjustable lever ends contact.As can be seen from this structure, drive pushing block to move by the piston rod of cylinder, pushing block promotes adjustable lever and moves up and down, thus the size of adjustment damping force, regulate laborsaving.
Compared with prior art, the advantage of this damping adjustable oil cylinder is: 1, design is more reasonable, and structure is simpler, and can reduce the difficulty of processing of cylinder body, and prevent the hydraulic oil in cylinder body from revealing between assembly department and working part, service time is long; 2, the hydraulic oil in fuel reserve tank adds in the piston cavity of cylinder body by delivery pipe by transfer pump, and fluid infusion is convenient; 3, drive pushing block to move by the piston rod of cylinder, pushing block promotes adjustable lever and moves up and down, thus the size of adjustment damping force, regulate laborsaving.
Accompanying drawing explanation
Fig. 1 is structural representation provided by the invention.
Fig. 2 be in Fig. 1 A-A to structural representation.
Fig. 3 is schematic diagram provided by the invention.
Fig. 4 is the structure enlarged diagram at B place in Fig. 1.
Fig. 5 is partial structurtes enlarged diagram provided by the invention.
Fig. 6 is the structural representation of cylinder body in the present invention.
Fig. 7 is the structural representation of fluid infusion mechanism in the present invention.
In figure, cylinder body 1, working part 1e, assembly department 1f, drainback passage 11, damping hole 12, throttling pressure regulator valve 13, adjustable lever 13a, throttle orifice 13b, O RunddichtringO 13c, adjusting knob 13d, positioning hole 14, ring-shaped step 14a, pressing plate 15, annular abutment portion 15a, repairing hole 16, rotating shaft oil sealing 17, seal ring 18, piston 2, piston oil seal 2a, oil sealing fixed plate 2b, O-ring seal 2c, tooth bar 2d, oil discharge passage 21, annular prevent surface 21a, turning axle 3, gear 3a, irreversible control 4, one-way valve seat 41, center hole 41a, spring 42, spherical occluding body 43, accumulation of energy lubricating cup 6, first sub-cavity a, second sub-cavity b, circular cone c, annular anticreep face d, motor 7, driving wheel 71, delivery pipe 8, one-way valve 81, transfer pump 82, fuel reserve tank 83.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in figs. 1-7, this damping adjustable oil cylinder comprises the cylinder body 1 with piston cavity, the piston 2 that this piston cavity can be separated into the first sub-cavity a and the second sub-cavity b is provided with in cylinder body 1, cylinder body 1 is provided with the accumulation of energy lubricating cup 6 and repairing hole 16 that are communicated with piston cavity respectively, when the oil level in accumulation of energy lubricating cup 6 is lower than minimum oil level, repairing is carried out by repairing hole 16, ensure the normal operation of oil cylinder, secondly, the piston oil seal 2a between piston 2 and cylinder body 1 inwall is arranged with respectively in piston 2 both end sides portion, described piston oil seal 2a is fixing on the piston 2 respectively by oil sealing fixed plate 2b, also be arranged with some O-ring seal 2c laid respectively between piston 2 and cylinder body 1 inwall on the piston 2, this structure can ensure the sealing between the first sub-cavity a and the second sub-cavity b.
Outer being also provided with of cylinder body 1 can to the fluid infusion mechanism of replenisher force feed in repairing hole 16, fluid infusion mechanism comprises fuel reserve tank 83, delivery pipe 8 and transfer pump 82, fuel reserve tank 83 is connected by delivery pipe 8 with repairing hole 16, transfer pump 82 is arranged in delivery pipe 8, is also provided with the one-way valve 81 that can make hydraulic oil one-way flow in delivery pipe 8; Open transfer pump 82, the hydraulic oil in fuel reserve tank 83 adds in the piston cavity of cylinder body 1 by delivery pipe 8 by transfer pump 82, and fluid infusion easily and fast.
Adjustable lever 13a is provided with adjusting knob 13d away from one end of cylinder body, adjusting knob 13d and one can drive its driving mechanism rotated to be connected, driving mechanism comprises motor 7 and driving wheel 71, motor 7 is fixed on cylinder body 1, driving wheel 71 is fixed on the output shaft of motor 7, the side of adjusting knob 13d has the engaging piece be meshed with driving wheel 71, as can be seen from this structure, driving wheel 71 is driven to rotate by the output shaft of motor 7, driving wheel 71 drives adjusting knob 13d to rotate, adjusting knob 13d drives adjustable lever 13a to rotate, thus the size of adjustment damping force, regulate precisely, certainly, also can adopt this kind of scheme, adjustable lever 13a is provided with the elevator mechanism that can regulate its oscilaltion away from one end of cylinder body, elevator mechanism comprises cylinder, guide pad, guide rail and pushing block, guide rail is fixed on cylinder body 1 by support, guide pad is arranged in guide rail, cylinder is fixed on support, the piston rod of cylinder straight up, piston rod end and the pushing block of cylinder fix, pushing block energy and adjustable lever 13a ends contact, as can be seen from this structure, drive pushing block to move by the piston rod of cylinder, pushing block promotes adjustable lever 13a and moves up and down, thus the size of adjustment damping force, regulate laborsaving.
The piston 2 of the present embodiment is connected with the turning axle 3 that it can be driven to move back and forth back and forth in piston cavity, this turning axle 3 axial restraint and circumference can be rotated by opposing cylinder 1, and the power intake of this turning axle 3 extends to outside cylinder body 1, the rotating shaft oil sealing 17 being enclosed within turning axle 3 power intake is provided with in cylinder body 1, turning axle 3 is provided with the gear 3a being positioned at cylinder body 1, is provided with the tooth bar 2d be meshed with described gear 3a on the piston 2.Tooth bar 2d and gear 3a with the use of making Power output more stable, effectively improve transmission efficiency, also further enhancing the practicability of the present embodiment simultaneously.
Be provided with the oil discharge passage 21 that the described first sub-cavity a can be communicated with the second sub-cavity b on the piston 2, be provided with in oil discharge passage 21 and close when piston 2 moves around or the irreversible control 4 of this oil discharge passage 21 of conducting, cylinder body 1 offers and the described first sub-cavity a can be communicated with the second sub-cavity b and the hydraulic oil in the second sub-cavity b can be made when oil discharge passage 21 is closed to return the drainback passage 11 of the first sub-cavity a, the damping throttling pressure-regulating device that can apply damping force when turning axle 3 driven plunger 2 moves to the second sub-cavity b side and oil discharge passage 21 is closed to turning axle 3 is provided with in drainback passage 11, this damping throttling pressure-regulating device can make to produce high pressure in the second sub-cavity b, thus produce damping force and react on turning axle 3, namely the turning axle 3 when this damping force rotates turning axle 3 thus drives piston 2 to move to the second sub-cavity b side has the opposite effect, thus ensures use safety, cylinder body 1 comprises working part 1e and assembly department 1f, working part 1e is provided with the through hole run through, assembly department 1f is separately positioned on working part 1e two ends, the through hole of assembly department 1f and working part 1e forms piston cavity, assembly department 1f is provided with mounting groove in the form of a ring, in the present embodiment, the quantity of mounting groove is three, be provided with seal ring 18 in mounting groove, seal ring 18 can be resisted against on assembly department 1f and working part 1e respectively, adopt this structure, can reduce the difficulty of processing of cylinder body 1, and prevent the hydraulic oil in cylinder body 1 from revealing between assembly department 1f and working part 1e, improve the working life of oil cylinder, service time is long.
Concrete, the damping throttling pressure-regulating device of the present embodiment comprises damping hole 12, the oil inlet end of damping hole 12 is communicated with the second sub-cavity b, the oil outlet end of damping hole 12 is communicated with drainback passage 11, described damping hole 12 internal diameter is less than or equal to the internal diameter of drainback passage 11, and cylinder body 1 is provided with the throttling pressure regulator valve 13 for controlling damping hole 12 oil pump capacity.Further, this throttling pressure regulator valve 13 comprises axial restraint and circumferential rotating adjustable lever 13a, adjustable lever 13a is provided with throttle orifice 13b, and the oil inlet end of this throttle orifice 13b is communicated with damping hole 12 oil inlet end, and the oil outlet end of throttle orifice 13b is communicated with damping hole 12 oil outlet end.
In addition, the cylinder body 1 of the present embodiment is provided with the positioning hole 14 be communicated with damping hole 12, cylinder body 1 is also provided with the ring-shaped step 14a being positioned at positioning hole 14 aperture place, described adjustable lever 13a one end inserts in positioning hole 14, adjusting knob 13d is provided with away from one end of cylinder body 1 at adjustable lever 13a, ring-shaped step 14a is installed with the pressing plate 15 be enclosed within outside adjustable lever 13a, adjustable lever 13a is arranged with some O RunddichtringO 13c laid respectively between adjustable lever 13a and positioning hole 14, the disconnecting prevention structure that can prevent this adjustable lever 13a from axially departing from pressing plate 15 is provided with between pressing plate 15 and adjustable lever 13a.
This disconnecting prevention structure comprises the annular abutment portion 15a be arranged on pressing plate 15, and adjustable lever 13a is provided with the annular anticreep face d abutting in upper-end surface, annular abutment portion, can ensure that adjustable lever 13a departs from pressing plate 15 like this, thus ensure structural strength and working life.
Further, above-mentioned irreversible control 4 comprises the one-way valve seat 41 being arranged on oil discharge passage 21 oil inlet end, the center hole 41a be communicated with oil discharge passage 21 is had in one-way valve seat 41 axial centre, spring 42 is provided with in oil discharge passage 21, this spring 42 is resisted against on the annular prevent surface 21a in oil discharge passage 21 near one end of the second sub-cavity b, be provided with spherical occluding body 43 between the other end of spring 42 and one-way valve seat 41, described center hole 41a internal diameter is less than the diameter of spherical occluding body 43.Further, this spherical occluding body 43 is made up of metallic material.
At the arc shaped surface that the center hole 41a of one-way valve seat 41 has circular cone c near one end of spherical occluding body 43 or matches with described spherical occluding body 43 profile.This structure can strengthen sealing further, can prevent hydraulic oil from refluxing.
The working principle of the present embodiment is as follows: when turning axle 3 driven plunger 2 moves to the second sub-cavity b side and oil discharge passage 21 is closed, hydraulic oil in second sub-chamber b is by the effect of damping throttling pressure-regulating device, make to produce high pressure in the second sub-chamber b, this high pressure passes to turning axle 3 by piston 2, thus a damping force is applied to turning axle 3, not only ensure use safety, also further simplify the structure of complete machine; When turning axle 3 driven plunger 2 moves to the first sub-cavity a side and oil discharge passage 21 is switched on, the first sub-cavity a hydraulic oil is back to the second sub-chamber b, thus oil cylinder completes a cycle operation.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (6)
1. damping adjustable oil cylinder, comprise the cylinder body with piston cavity, the piston that this piston cavity can be separated into the first sub-cavity and the second sub-cavity is provided with in cylinder body, described piston is connected with the turning axle that it can be driven to move back and forth back and forth in piston cavity, it is characterized in that, described piston is provided with can by the oil discharge passage of the described first sub-cavity and the second sub-cavity connects, be provided with in oil discharge passage and close when piston moves around or the irreversible control of this oil discharge passage of conducting, cylinder body offers and can the hydraulic oil in the second sub-cavity can be made when oil discharge passage is closed the described first sub-cavity and the second sub-cavity connects to return the drainback passage of the first sub-cavity, be provided with in drainback passage when turning axle driven plunger to the second sub-cavity side move and oil discharge passage is closed time can apply the damping throttling pressure-regulating device of damping force to turning axle, described cylinder body comprises working part and assembly department, working part is provided with the through hole run through, assembly department is separately positioned on working part two ends, the through hole of assembly department and working part forms above-mentioned piston cavity, assembly department is provided with mounting groove in the form of a ring, be provided with seal ring in mounting groove, seal ring can be resisted against in assembly department and working part respectively, described cylinder body is provided with the accumulation of energy lubricating cup and repairing hole that are communicated with piston cavity respectively, described cylinder body is also provided with outward can to the fluid infusion mechanism of replenisher force feed in repairing hole, fluid infusion mechanism comprises fuel reserve tank, delivery pipe and transfer pump, fuel reserve tank is connected by delivery pipe with repairing hole, transfer pump is arranged in delivery pipe, is also provided with the one-way valve that can make hydraulic oil one-way flow in delivery pipe, described adjustable lever is provided with adjusting knob away from one end of cylinder body, adjusting knob and one can drive its driving mechanism rotated to be connected, driving mechanism comprises motor and driving wheel, motor is fixed on cylinder body, driving wheel is fixed on the output shaft of motor, and the side of adjusting knob has the engaging piece be meshed with driving wheel.
2. damping adjustable oil cylinder according to claim 1, is characterized in that, the material of described working part is aluminium.
3. damping adjustable oil cylinder according to claim 1, is characterized in that, the material of described assembly department is iron.
4. damping adjustable oil cylinder according to claim 1, it is characterized in that, described damping throttling pressure-regulating device comprises damping hole, the oil inlet end of damping hole and the second sub-cavity connects, the oil outlet end of damping hole is communicated with drainback passage, described damping hole internal diameter is less than or equal to the internal diameter of drainback passage, and cylinder body is provided with the throttling pressure regulator valve for controlling damping hole oil pump capacity; Described throttling pressure regulator valve comprises axial restraint and circumferential rotating adjustable lever, and adjustable lever is provided with throttle orifice, and the oil inlet end of this throttle orifice is communicated with damping hole oil inlet end, and the oil outlet end of throttle orifice is communicated with damping hole oil outlet end.
5. damping adjustable oil cylinder according to claim 4, it is characterized in that, described cylinder body is provided with the positioning hole be communicated with damping hole, cylinder body is also provided with the ring-shaped step being positioned at positioning hole aperture place, described adjustable lever one end inserts in positioning hole, ring-shaped step is installed with the pressing plate be enclosed within outside adjustable lever, adjustable lever is arranged with some O RunddichtringOs laid respectively between adjustable lever and positioning hole, between pressing plate and adjustable lever, is provided with the disconnecting prevention structure that can prevent this adjustable lever from axially departing from pressing plate.
6. damping adjustable oil cylinder according to claim 5, it is characterized in that, described irreversible control comprises the one-way valve seat being arranged on oil discharge passage oil inlet end, the center hole be communicated with oil discharge passage is had in one-way valve seat axial centre, spring is provided with in oil discharge passage, this spring is resisted against on the annular prevent surface in oil discharge passage near one end of the second sub-cavity, be provided with spherical occluding body between the other end of spring and one-way valve seat, described center hole internal diameter is less than the diameter of spherical occluding body; The center hole of described one-way valve seat has circular cone or matches with described spherical occluding body profile arc shaped surface near one end of spherical occluding body; Described piston both end sides portion is arranged with the piston oil seal between piston and inboard wall of cylinder block respectively, described piston oil seal is fixed on piston respectively by oil sealing fixed plate, and piston is also arranged with some O-ring seals laid respectively between piston and inboard wall of cylinder block; Described turning axle axial restraint and circumference can be rotated by opposing cylinder, and the power intake of this turning axle extends to outside cylinder body, the rotating shaft oil sealing being enclosed within turning axle power intake is provided with in cylinder body, turning axle is provided with the gear being positioned at cylinder body, piston is provided with the tooth bar be meshed with described gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795182.0A CN105332970A (en) | 2015-11-18 | 2015-11-18 | Variable-damping oil cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795182.0A CN105332970A (en) | 2015-11-18 | 2015-11-18 | Variable-damping oil cylinder |
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| CN105332970A true CN105332970A (en) | 2016-02-17 |
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| CN201510795182.0A Pending CN105332970A (en) | 2015-11-18 | 2015-11-18 | Variable-damping oil cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107456299A (en) * | 2016-06-02 | 2017-12-12 | 肯达路企业股份有限公司 | Oil pressure ankle-joint |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511538A (en) * | 2013-10-11 | 2014-01-15 | 浙江正星健身器有限公司 | Torsional oil cylinder |
| CN203500362U (en) * | 2013-10-11 | 2014-03-26 | 浙江正星健身器有限公司 | Damping pressure regulating mechanism of torsion oil cylinder |
-
2015
- 2015-11-18 CN CN201510795182.0A patent/CN105332970A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511538A (en) * | 2013-10-11 | 2014-01-15 | 浙江正星健身器有限公司 | Torsional oil cylinder |
| CN203500362U (en) * | 2013-10-11 | 2014-03-26 | 浙江正星健身器有限公司 | Damping pressure regulating mechanism of torsion oil cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107456299A (en) * | 2016-06-02 | 2017-12-12 | 肯达路企业股份有限公司 | Oil pressure ankle-joint |
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