CN112012979A - Integrated hydraulic oil cylinder with power - Google Patents
Integrated hydraulic oil cylinder with power Download PDFInfo
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- CN112012979A CN112012979A CN202010853771.0A CN202010853771A CN112012979A CN 112012979 A CN112012979 A CN 112012979A CN 202010853771 A CN202010853771 A CN 202010853771A CN 112012979 A CN112012979 A CN 112012979A
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- cavity
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- rod
- pressure generating
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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
- F15B15/20—Other details, e.g. assembly with regulating devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
A self-powered integrated hydraulic oil cylinder comprises a cylinder body and is characterized in that the cylinder body consists of a pressure generating cavity and a power output cavity, wherein the pressure generating cavity is filled with hydraulic oil, the power output cavity is communicated with the pressure generating cavity through a through hole, a piston is arranged in the pressure generating cavity, the piston divides the pressure generating cavity into a high-pressure cavity and a low-pressure cavity, a screw hole is formed in the center of the piston, a screw rod is arranged in the screw hole, and the screw rod is connected with an output shaft of a driving motor; the piston realizes the linear movement in the pressure generating cavity through an anti-rotation mechanism; the movable output cavity is internally provided with a T-shaped piston rod, the small end of the T-shaped piston rod extends out of the cylinder body, the large end of the T-shaped piston rod divides the transportation output cavity into a rod cavity and a rodless cavity, the rodless cavity is communicated with the high-pressure cavity of the pressure generating cavity, and the rod cavity is communicated with the low-pressure cavity of the pressure generating cavity through an oil pipe or an oil circuit in the cylinder body. The invention has simple structure, small volume, no leakage and small working temperature rise.
Description
Technical Field
The invention relates to a hydraulic technology, in particular to a hydraulic oil cylinder, and specifically relates to an integrated hydraulic oil cylinder with power.
Background
At present, in order to guarantee hydraulic cylinder normal work, the oil pump is usually required to provide pressure oil, the oil inlet drive piston rod action of hydro-cylinder is sent pressure oil to the rethread various pipeline and valve, this kind of mode has been used for decades, its biggest problem is to have the oil circuit to leak, the structure is complicated, and is bulky, it is fast to heat up, especially each part scatter layout, area is big, influence the miniaturization of equipment, to the fatal defect more of mobile unit, consequently, how to integrate hydraulic cylinder, make it miniaturized, it is intelligent, high pressure ization is the problem of waiting to solve in the hydraulic pressure research field.
Disclosure of Invention
The invention aims to design a self-powered integrated hydraulic oil cylinder which does not need an oil pump to supply oil and has small volume, aiming at the problems of large volume, more parts and dispersed configuration of the existing hydraulic system.
The technical scheme of the invention is as follows:
an integrated hydraulic oil cylinder with power comprises a cylinder body 1 and is characterized in that the cylinder body consists of a pressure generating cavity 2 filled with hydraulic oil and a power output cavity 3, the pressure generating cavity 2 is communicated with the power output cavity 3 through a through hole 4, a piston 5 is arranged in the pressure generating cavity 2, the pressure generating cavity is divided into a high-pressure cavity and a low-pressure cavity by the piston 5, a screw hole is formed in the center of the piston 5, a screw rod 6 is arranged in the screw hole, and the screw rod 6 is connected with an output shaft 7 of a driving motor; the piston 5 achieves the linear movement in the pressure generating cavity 2 through an anti-rotation mechanism; the movable output cavity 3 is internally provided with a T-shaped piston rod 8, the small end of the T-shaped piston rod 8 extends out of the cylinder body 1, the large end of the T-shaped piston rod divides the transportation output cavity 3 into a rod cavity and a rodless cavity, the rodless cavity is communicated with the high-pressure cavity of the pressure generating cavity 2, and the rod cavity is communicated with the low-pressure cavity of the pressure generating cavity 2 through an oil pipe or an oil circuit in the cylinder body.
The rotation preventing mechanism is a connecting rod mounted on the piston or consists of at least two axial guide bulges or grooves arranged on the inner wall of the pressure generating cavity, and the corresponding grooves or bulges are arranged on the piston.
The piston 5 and the T-shaped piston rod 8 are coaxially, eccentrically or orthogonally arranged.
The low pressure cavity of the pressure generating cavity 2 is connected with an oil storage tank, one end of the oil storage tank is communicated with the low pressure cavity, and the other end of the oil storage tank is communicated with an oil circuit in the oil folding pipe or the cylinder body.
The driving motor is preferably a servo motor.
The invention has the beneficial effects that:
the invention has compact structure, small volume, few leakage points and basically no leakage.
The telescopic speed of the piston rod can be accurately adjusted by adjusting the rotating speed of the servo motor.
The pressure of the invention is adjustable, and the highest pressure can reach 100 MPa.
The invention is suitable for various hydraulic machine tools and vehicle-mounted equipment, greatly simplifies a hydraulic driving mechanism, and reduces the floor area and the integration of a hydraulic system.
The precise control and intelligent control of the stroke pressure can be realized by additionally arranging a corresponding auxiliary control device.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the working state of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
The first embodiment.
As shown in fig. 1.
A self-powered integrated hydraulic oil cylinder comprises a cylinder body 1, as shown in figure 1, wherein the cylinder body is composed of a pressure generating cavity 2 filled with hydraulic oil and a power output cavity 3, the pressure generating cavity 2 is communicated with the power output cavity 3 through a through hole 4, a piston 5 is arranged in the pressure generating cavity 2, the pressure generating cavity is divided into a high-pressure cavity and a low-pressure cavity by the piston 5, a screw hole is formed in the center of the piston 5, a screw rod 6 is arranged in the screw hole, a sealing shield 11 is preferably arranged outside the screw rod 6 in a covering mode, and the screw rod 6 is connected with an output shaft 7 of a servo motor (or other motors); in order to prevent the piston 5 from rotating and reduce abrasion, in the specific implementation, the piston 5 can realize the linear movement in the pressure generating cavity 2 by additionally arranging an anti-rotation mechanism, if the abrasion resistance of the piston is good enough, the piston 5 can also directly move while rotating, if the anti-rotation mechanism is required, the anti-rotation mechanism can adopt a connecting rod 9 which is arranged on the piston in a penetrating way or consists of at least two axial guide bulges or grooves arranged on the inner wall of the pressure generating cavity, and the corresponding piston is provided with a matched groove or bulge; the movable output cavity 3 is internally provided with a T-shaped piston rod 8, the small end of the T-shaped piston rod 8 extends out of the cylinder body 1, the large end of the T-shaped piston rod divides the transportation output cavity 3 into a rod cavity and a rodless cavity, the rodless cavity is communicated with the high-pressure cavity of the pressure generating cavity 2, and the rod cavity is communicated with the low-pressure cavity of the pressure generating cavity 2 through an oil pipe or an oil circuit in the cylinder body. During specific implementation, an oil storage tank 10 with a piston can be additionally arranged, a low-pressure cavity of the pressure generating cavity 2 is connected with the oil storage tank 10, one end of the oil storage tank is communicated with the low-pressure cavity, and the other end of the oil storage tank is communicated with an oil circuit in the oil folding pipe or the cylinder body.
As shown in fig. 2, the servo motor rotates to drive the screw rod 6 to rotate, and the screw rod 6 cannot move linearly, so that the piston 5 with a screw hole is forced to move, the oil pressure in the pressure generating cavity 2 is increased by the piston 5 and the movement, pressure oil flows into the power output cavity 3 through the through hole 4 to push the large end of the T-shaped piston rod 8 to move in the power generating cavity 2, so that the jacking action of the piston rod is realized, and hydraulic oil in the rod cavity flows back to the low-pressure side of the pressure generating cavity 2 (or enters a rodless cavity of an oil storage tank through an oil circuit on a pipeline or a cylinder body, and then the oil in the rod cavity is forced to enter the low-pressure side. When the piston rod finishes working, the servo motor rotates reversely, oil in the low-pressure cavity is injected into the rod cavity again, the pressure of the rod cavity forces the T-shaped piston rod to move, and the T-shaped piston rod retracts into the power output cavity to wait for the start of the next action.
Example two.
The difference between this embodiment and the first embodiment is that the axis of the T-shaped piston rod 8 is eccentrically mounted to the axis of the piston 5.
Example three.
The difference between the embodiment and the first embodiment is that the axis of the T-shaped piston rod 8 is orthogonal to the axis of the piston 5, and at this time, only a transition cylinder is connected to the cylindrical surface of the pressure generating chamber 2, and the pressure generating chamber 2 is communicated with the power output chamber 3 through the transition cylinder.
The parts not involved in the present invention are the same as or can be implemented using the prior art. .
Claims (5)
1. The self-powered integrated hydraulic oil cylinder comprises a cylinder body (1) and is characterized in that the cylinder body consists of a pressure generation cavity (2) filled with hydraulic oil and a power output cavity (3), the pressure generation cavity (2) is communicated with the power output cavity (3) through a through hole (4), a piston (5) is installed in the pressure generation cavity (2), the pressure generation cavity is divided into a high-pressure cavity and a low-pressure cavity by the piston (5), a screw hole is formed in the center of the piston (5), a screw rod (6) is installed in the screw hole, and the screw rod (6) is connected with an output shaft (7) of a driving motor; the piston (5) realizes the linear movement in the pressure generating cavity (2) through an anti-rotation mechanism; the movable output cavity (3) is internally provided with a T-shaped piston rod (8), the small end of the T-shaped piston rod (8) extends out of the cylinder body (1), the large end of the T-shaped piston rod divides the transportation output cavity (3) into a rod cavity and a rodless cavity, the rodless cavity is communicated with the high-pressure cavity of the pressure generation cavity (2), and the rod cavity is communicated with the low-pressure cavity of the pressure generation cavity (2) through an oil pipe or an oil circuit in the cylinder body.
2. The self-powered integrated hydraulic oil cylinder as claimed in claim 1, wherein the rotation preventing mechanism is a connecting rod inserted into the piston or consists of at least two axial guide projections or grooves arranged on the inner wall of the pressure generating chamber, and the corresponding grooves or projections are arranged on the piston.
3. The self-powered integrated hydraulic oil cylinder as claimed in claim 1, wherein the piston (5) and the T-shaped piston rod (8) are coaxially, eccentrically or orthogonally arranged.
4. The self-powered integrated hydraulic oil cylinder as claimed in claim 1, wherein a low pressure cavity of the pressure generating cavity (2) is connected with an oil storage tank, one end of the oil storage tank is communicated with the low pressure cavity, and the other end of the oil storage tank is communicated with an oil path in the oil folding pipe or the cylinder body.
5. The self-powered integrated hydraulic oil cylinder as claimed in claim 1, wherein the driving motor is a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010853771.0A CN112012979A (en) | 2020-08-24 | 2020-08-24 | Integrated hydraulic oil cylinder with power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010853771.0A CN112012979A (en) | 2020-08-24 | 2020-08-24 | Integrated hydraulic oil cylinder with power |
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| Publication Number | Publication Date |
|---|---|
| CN112012979A true CN112012979A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010853771.0A Pending CN112012979A (en) | 2020-08-24 | 2020-08-24 | Integrated hydraulic oil cylinder with power |
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| CN (1) | CN112012979A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11270503A (en) * | 1998-03-23 | 1999-10-05 | Toshiba Mach Co Ltd | Fluid pressure device |
| CN101140001A (en) * | 2006-09-06 | 2008-03-12 | 杜彦亭 | Liquid, electric rectilinear movement executor |
| CN101639089A (en) * | 2009-08-10 | 2010-02-03 | 苏州大学 | Hydraulic driving device |
| CN105041757A (en) * | 2015-06-25 | 2015-11-11 | 安徽工业大学 | Double-thread screw-type swing hydraulic cylinder with piston and use method thereof |
| CN105650052A (en) * | 2016-03-31 | 2016-06-08 | 江阴市洪腾机械有限公司 | Dual-spiral swing hydraulic cylinder |
| CN208764023U (en) * | 2018-08-08 | 2019-04-19 | 长沙中金智能装备有限公司 | A kind of hydraulic cylinder and hydraulic system |
-
2020
- 2020-08-24 CN CN202010853771.0A patent/CN112012979A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11270503A (en) * | 1998-03-23 | 1999-10-05 | Toshiba Mach Co Ltd | Fluid pressure device |
| CN101140001A (en) * | 2006-09-06 | 2008-03-12 | 杜彦亭 | Liquid, electric rectilinear movement executor |
| CN101639089A (en) * | 2009-08-10 | 2010-02-03 | 苏州大学 | Hydraulic driving device |
| CN105041757A (en) * | 2015-06-25 | 2015-11-11 | 安徽工业大学 | Double-thread screw-type swing hydraulic cylinder with piston and use method thereof |
| CN105650052A (en) * | 2016-03-31 | 2016-06-08 | 江阴市洪腾机械有限公司 | Dual-spiral swing hydraulic cylinder |
| CN208764023U (en) * | 2018-08-08 | 2019-04-19 | 长沙中金智能装备有限公司 | A kind of hydraulic cylinder and hydraulic system |
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