CN111412192B - Oil cylinder - Google Patents
Oil cylinder Download PDFInfo
- Publication number
- CN111412192B CN111412192B CN202010233262.8A CN202010233262A CN111412192B CN 111412192 B CN111412192 B CN 111412192B CN 202010233262 A CN202010233262 A CN 202010233262A CN 111412192 B CN111412192 B CN 111412192B
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- CN
- China
- Prior art keywords
- left end
- rod
- end cover
- hole
- positioning
- 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.)
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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
- F15B15/1423—Component parts; Constructional details
- F15B15/1438—Cylinder to end cap assemblies
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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
- F15B15/20—Other details, e.g. assembly with regulating devices
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/765—Control of position or angle of the output member
Abstract
The invention discloses an oil cylinder which comprises a cylinder body, wherein a left end cover is fixedly installed at the left end of the cylinder body, a right end cover is fixedly installed at the right end of the cylinder body, a piston body is connected in the cylinder body in a sliding mode, a piston rod extending out of the right end cover is arranged at the right end of the piston body, a rodless cavity is formed between the piston body and the left end cover in the cylinder body, and a rod cavity is formed between the piston body and the right end cover; the side surface of the right end cover is provided with a port B communicated with the rod cavity, the side surface of the left end cover facing the piston body is provided with a valve hole, and the side surface of the left end cover is provided with a port A communicated with the valve hole; mounting holes are formed in the piston body and the piston rod along the axial direction of the piston rod, a loop bar is arranged in the mounting holes, an adjusting component is arranged in the left end cover and is used for controlling the length of the left end of the loop bar extending out of the mounting holes; the oil cylinder is simple in structure and can adjust the stroke of the oil cylinder.
Description
Technical Field
The invention belongs to the technical field of oil cylinders, and particularly relates to an oil cylinder capable of controlling a stroke.
Background
The hydraulic oil cylinder is a hydraulic actuating element which makes linear reciprocating motion (or swinging motion). The hydraulic system is widely applied to hydraulic systems of various machines. Hydraulic cylinders are classified into piston type, ram type, swing type and telescopic type according to their structural types, and among them, piston type hydraulic cylinders are most used. The piston type hydraulic cylinder generally comprises a cylinder body, a cylinder piston, a piston rod, a front cylinder cover, a rear cylinder cover and the like, and the transmission distance is the movement stroke of the piston rod. However, in the actual use process, the transmission distance of the oil cylinder is required to be variable sometimes. In the prior art, some oil cylinders capable of adjusting strokes exist, but most of the oil cylinders need to be fixed on a piston rod in a clamping manner, so that the piston rod is damaged to a certain extent and oil sealing is not facilitated; and the scheme can only control the stroke of the oil cylinder when the oil cylinder extends to the longest length and retracts backwards, and has limitation in use.
Disclosure of Invention
The invention aims to provide an oil cylinder which is simple in structure and can realize adjustment of the stroke of the oil cylinder.
In order to achieve the purpose, the invention provides the following technical scheme:
an oil cylinder comprises a cylinder body, wherein a left end cover is fixedly installed at the left end of the cylinder body, a right end cover is fixedly installed at the right end of the cylinder body, a piston body is connected in the cylinder body in a sliding mode, a piston rod extending out of the right end cover is arranged at the right end of the piston body, a rodless cavity is formed between the piston body and the left end cover in the cylinder body, and a rod cavity is formed between the piston body and the right end cover; the side surface of the right end cover is provided with a port B communicated with the rod cavity, the side surface of the left end cover facing the piston body is provided with a valve hole, and the side surface of the left end cover is provided with a port A communicated with the valve hole; the piston body and the piston rod are internally provided with mounting holes along the axial direction of the piston rod, a loop bar is arranged in the mounting holes, an adjusting component is arranged in the left end cover and is used for controlling the length of the left end of the loop bar extending out of the mounting holes, when the left end of the loop bar is positioned in the mounting holes, the piston body moves leftwards, and when the left end of the loop bar is abutted against the left end cover, the piston body stops moving leftwards; when the left end of the loop bar extends out of the mounting hole, the piston body moves leftwards, and when the left end of the loop bar is inserted into the valve hole, the piston body stops moving leftwards.
Through the technical scheme, when the stroke of the oil cylinder needs to be adjusted, the length of the left end of the sleeve rod extending out of the mounting hole is controlled by the adjusting assembly, and the longer the length of the left end of the sleeve rod extending out of the mounting hole is, the shorter the leftward movement distance of the piston body is, the smaller the stroke of the oil cylinder is; the shorter the length of the left end of the loop bar extending out of the mounting hole is, the longer the distance of the piston moving leftwards is, the larger the stroke of the oil cylinder is, when the left end of the loop bar is positioned in the mounting hole, the maximum stroke of the oil cylinder is, and when the loop bar extends out of the mounting hole completely, the minimum stroke of the oil cylinder is.
In a further technical scheme, the adjusting assembly comprises a shaft lever which is rotatably connected in the left end cover, the shaft lever and the loop bar are coaxially arranged, and the left end of the shaft lever is positioned outside the left end cover and is fixedly provided with a handle; a hole sleeve which penetrates through the sleeve rod and has a square cross section is axially arranged in the sleeve rod, and a transmission rod which penetrates through the valve hole and extends into the hole sleeve and has a square cross section is arranged at the right end of the shaft rod; the inner side wall of the mounting hole is provided with a spiral groove, and the outer side of the sleeve rod is provided with a convex column extending into the spiral groove; when the loop bar rotates, the loop bar moves axially along the mounting hole under the action of the convex column and the spiral groove; a sliding guide hole is formed in the piston body along the axial direction of the piston rod, and a sliding guide rod extending into the sliding guide hole is fixedly arranged between the left end cover and the right end cover; the left side of left end cover is equipped with locating component, locating component is used for the handle location.
In a further technical scheme, the axial along the loop bar is equipped with the through-flow hole on the inside wall of hole cover, the left end opening part fixed mounting of mounting hole has the cavity plug of cup jointing on the loop bar, the cavity plug is used for blocking the helicla flute.
In a further technical scheme, a boss is arranged on the left side of the left end cover, a shaft hole is formed in the outer side of the shaft rod in the boss, a shaft shoulder located in the shaft hole is arranged on the side face of the outer circumference of the shaft rod, and a plug sleeved on the shaft rod and used for preventing the shaft shoulder from being separated from the shaft hole is fixedly mounted at an opening of the left end of the shaft hole.
In a further technical scheme, locating component includes positioning disk, locating lever, positioning spring, positioning disk fixed mounting is in the left side of end cap, the locating lever articulates on the handle, positioning spring is located between handle and the locating lever, positioning spring is used for forcing one end of locating lever to insert in the constant head tank of the outer circumference side of positioning disk.
In a further technical scheme, a first through hole used for communicating the port A and the valve hole is formed in the left end cover, and a second through hole used for communicating the port B and the rod cavity is formed in the right end cover.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) the purpose of blocking an oil way is achieved by matching the sleeve rod with the valve hole, so that the piston body moving leftwards is stopped, and a hard contact mode is not used, so that parts can be protected from being impacted;
(2) the length of the sleeve rod extending out of the mounting hole is controlled by using the spiral groove, so that the stroke of the oil cylinder is changed, the whole length of the oil cylinder is not increased, the volume is compact, the structure is simple, and the operation is easy.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the piston rod of the present invention with the piston rod extended;
FIG. 3 is a cross-sectional view of the present invention with the loop bar extended;
fig. 4 is a cross-sectional view of the invention after a shortened stroke.
Detailed Description
Referring to fig. 1-4, an oil cylinder includes a cylinder body 3, a left end cap 8 is fixedly installed at a left end of the cylinder body 3, a right end cap 9 is fixedly installed at a right end of the cylinder body 3, a piston body 1 is slidably connected in the cylinder body 3, a piston rod 11 extending out of the right end cap 9 is arranged at the right end of the piston body 1, a rodless cavity 3a is formed between the piston body 1 and the left end cap 8 in the cylinder body 3, and a rod cavity 3b is formed between the piston body 1 and the right end cap 9; the side surface of the right end cover 9 is provided with a port B, the side surface of the left end cover 8 facing the piston body 1 is provided with a valve hole 8B, and the side surface of the left end cover 8 is provided with a port A; a first through hole 8a used for communicating the port A with the valve hole 8B is formed in the left end cover 8, and a second through hole 9a used for communicating the port B with the rod cavity 3B is formed in the right end cover 9; the piston body 1 and the piston rod 11 are internally provided with mounting holes 12 along the axial direction of the piston rod 11, the mounting holes 12 are internally provided with the loop bars 2, the left end cover 8 is internally provided with an adjusting component, the adjusting component is used for controlling the length of the left end of the loop bar 2 extending out of the mounting holes 12, when the left end of the loop bar 2 is positioned in the mounting holes 12, the piston body 1 moves leftwards, and when the left end of the loop bar 2 is abutted against the left end cover 8, the left movement is stopped; when the left end of the stem 2 is protruded out of the mounting hole 12, the piston body 1 is moved leftward, and when the left end of the stem 2 is inserted into the valve hole 8b, the piston body 1 stops moving leftward.
The adjusting assembly comprises a shaft lever 4 which is rotatably connected in a left end cover 8, the shaft lever 4 and the loop bar 2 are coaxially arranged, and the left end of the shaft lever 4 is positioned outside the left end cover 8 and is fixedly provided with a handle 6; a through hole sleeve 21 with a square cross section is arranged in the sleeve rod 2 along the axial direction, and a transmission rod 4a with a square cross section, which penetrates through the valve hole 8b and extends into the hole sleeve 21, is arranged at the right end of the shaft rod 4; the inner side wall of the mounting hole 12 is provided with a spiral groove 1a, and the outer side of the loop bar 2 is provided with a convex column 2b extending into the spiral groove 1 a; when the loop bar 2 rotates, the loop bar 2 moves axially along the mounting hole 12 under the action of the convex column 2b and the spiral groove 1 a; a sliding guide hole 13 is formed in the piston body 1 along the axial direction of the piston rod 11, and a sliding guide rod 7 extending into the sliding guide hole 13 is fixedly arranged between the left end cover 8 and the right end cover 9; and a positioning assembly is arranged on the left side of the left end cover 8 and is used for positioning the handle 6. The axial along loop bar 2 is equipped with through-flow hole 22 on the inside wall of eyelet bush 21, the left end opening part fixed mounting of mounting hole 12 has the cavity plug 23 of cup jointing on loop bar 2, cavity plug 23 is used for blocking helicla flute 1 a.
The left end cover 8 is provided with a boss 81 on the left side, the boss 81 is provided with a shaft hole 82 on the outer side of the shaft lever 4, the outer circumferential side of the shaft lever 4 is provided with a shaft shoulder 41 positioned in the shaft hole 82, and a plug 83 sleeved on the shaft lever 4 and used for preventing the shaft shoulder 41 from separating from the shaft hole 82 is fixedly installed at the left end opening of the shaft hole 82. The positioning assembly comprises a positioning disc 5, a positioning rod 62 and a positioning spring 61, wherein the positioning disc 5 is fixedly installed on the left side of the plug 83, the positioning rod 62 is hinged to the handle 6, the positioning spring 61 is located between the handle 6 and the positioning rod 62, and the positioning spring 61 is used for forcing one end of the positioning rod 62 to be inserted into a positioning groove (shown in the prior art) in the side surface of the outer circumference of the positioning disc 5.
As shown in figure 1, the simple structure of the stroke cylinder of the invention needs to connect the stroke cylinder into a pipeline before working, when the oil cylinder works, a medium enters the rodless cavity 3a through the port A, the first through hole 8a and the valve hole 8B to push the piston body 1 to move rightwards, the piston rod 11 extends, the medium in the rod cavity 3B flows out from the port B through the second through hole 9a until the piston body 1 moves to the rightmost end, the piston rod 11 extends completely, when the piston rod 11 needs to retract, the medium flows through the second through hole 9a from the port B to enter the rod cavity 3B to push the piston body 1 to move leftwards, and the medium in the rodless cavity 3a flows out of the port A through the valve hole 8B and the first through hole 8a until the piston body 1 moves to the leftmost end until the piston rod 11 retracts completely.
When the stroke cylinder needs to control the stroke, firstly, the positioning rod 62 needs to be pinched to enable one end of the positioning rod 62 to be separated from the positioning groove (all shown in the prior art), the rotating handle 6 drives the shaft rod 4 to rotate, the transmission rod 4a on the shaft rod 4 is square, due to the matching between the square transmission rod 4a and the square hole sleeve 21, therefore, when the shaft lever 4 rotates, the sleeve rod 2 is driven to rotate, the piston body 1 and the piston rod 11 can not rotate due to the fixing action of the guide slide rod 7, and due to the matching between the convex column 2b and the spiral groove 1a, the sleeve rod 2 will be pushed out of the mounting hole 12, out of the piston body 1 (as shown in figure 3), when the piston body 1 retracts, the left end of the loop bar 2 firstly enters the valve hole 8b to close the oil circuit, the medium flow in the rodless cavity 3a does not go out to stop the piston body 1, the stroke of the stroke cylinder can be controlled by controlling the length of the left end of the loop bar 2 extending out of the mounting hole 12. When the length of the left end of the loop bar 2 extending out of the mounting hole 12 is longer, the leftward movement distance of the piston body 1 is shorter, and the stroke of the oil cylinder is smaller; when the left end of the loop bar 2 extends out of the mounting hole 12 for a shorter length, the piston body 1 moves leftwards for a longer distance, the stroke of the oil cylinder is larger, when the left end of the loop bar 2 is positioned in the mounting hole 12, the stroke of the oil cylinder is the largest, and when the loop bar 2 completely extends out of the mounting hole 12, the stroke of the oil cylinder is the smallest.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. An oil cylinder comprises a cylinder body, wherein a left end cover is fixedly installed at the left end of the cylinder body, a right end cover is fixedly installed at the right end of the cylinder body, a piston body is connected in the cylinder body in a sliding mode, a piston rod extending out of the right end cover is arranged at the right end of the piston body, a rodless cavity is formed between the piston body and the left end cover in the cylinder body, and a rod cavity is formed between the piston body and the right end cover; the side surface of the right end cover is provided with a port B communicated with the rod cavity, the side surface of the left end cover facing the piston body is provided with a valve hole, and the side surface of the left end cover is provided with a port A communicated with the valve hole; the left end cover is internally provided with an adjusting component, the adjusting component is used for controlling the length of the left end of the loop bar extending out of the mounting hole, and when the left end of the loop bar is positioned in the mounting hole, the piston body moves leftwards and abuts against the left end cover and stops moving leftwards; when the left end of the loop bar extends out of the mounting hole, the piston body moves leftwards, and when the left end of the loop bar is inserted into the valve hole, the piston body stops moving leftwards;
the adjusting assembly comprises a shaft rod which is rotatably connected in the left end cover, the shaft rod and the sleeve rod are coaxially arranged, and the left end of the shaft rod is positioned on the outer side of the left end cover and is fixedly provided with a handle; a hole sleeve with a square cross section is arranged in the sleeve rod in a penetrating way along the axial direction, and a transmission rod with a square cross section is arranged at the right end of the shaft rod and penetrates through the valve hole to extend into the hole sleeve; the inner side wall of the mounting hole is provided with a spiral groove, and the outer side of the sleeve rod is provided with a convex column extending into the spiral groove; when the loop bar rotates, the loop bar moves axially along the mounting hole under the action of the convex column and the spiral groove; a sliding guide hole is formed in the piston body along the axial direction of the piston rod, and a sliding guide rod extending into the sliding guide hole is fixedly arranged between the left end cover and the right end cover; the left side of the left end cover is provided with a positioning assembly, and the positioning assembly is used for positioning the handle;
a boss is arranged on the left side of the left end cover, a shaft hole is formed in the boss and outside the shaft rod, a shaft shoulder located in the shaft hole is arranged on the side face of the outer circumference of the shaft rod, and a plug sleeved on the shaft rod and used for preventing the shaft shoulder from being separated from the shaft hole is fixedly installed at the opening of the left end of the shaft hole;
the positioning assembly comprises a positioning disc, a positioning rod and a positioning spring, the positioning disc is fixedly mounted on the left side of the plug, the positioning rod is hinged to the handle, the positioning spring is located between the handle and the positioning rod, and the positioning spring is used for forcing one end of the positioning rod to be inserted into a positioning groove in the side face of the outer circumference of the positioning disc.
2. The oil cylinder according to claim 1, wherein a through-flow hole is formed in the inner side wall of the hole sleeve along the axial direction of the sleeve rod, a hollow plug sleeved on the sleeve rod is fixedly installed at an opening at the left end of the installation hole, and the hollow plug is used for blocking the spiral groove.
3. The oil cylinder according to claim 1, characterized in that a first through hole for communicating the port A with the valve hole is formed in the left end cover, and a second through hole for communicating the port B with the rod cavity is formed in the right end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010233262.8A CN111412192B (en) | 2020-03-29 | 2020-03-29 | Oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010233262.8A CN111412192B (en) | 2020-03-29 | 2020-03-29 | Oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111412192A CN111412192A (en) | 2020-07-14 |
| CN111412192B true CN111412192B (en) | 2022-09-23 |
Family
ID=71489375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010233262.8A Active CN111412192B (en) | 2020-03-29 | 2020-03-29 | Oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111412192B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682386B (en) * | 2021-01-06 | 2023-06-23 | 泸州合成液压件有限公司 | Oil cylinder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014169774A (en) * | 2013-03-05 | 2014-09-18 | Horiuchi Kikai:Kk | Hydraulic device, hydraulic system, control method of hydraulic device, and control method of hydraulic system |
| CN107806456A (en) * | 2017-12-06 | 2018-03-16 | 富强鑫（宁波）机器制造有限公司 | One kind die sinking positional cylinder |
| CN110273891A (en) * | 2019-07-30 | 2019-09-24 | 安徽马钢张庄矿业有限责任公司 | A kind of stroke oil cylinder |
-
2020
- 2020-03-29 CN CN202010233262.8A patent/CN111412192B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014169774A (en) * | 2013-03-05 | 2014-09-18 | Horiuchi Kikai:Kk | Hydraulic device, hydraulic system, control method of hydraulic device, and control method of hydraulic system |
| CN107806456A (en) * | 2017-12-06 | 2018-03-16 | 富强鑫（宁波）机器制造有限公司 | One kind die sinking positional cylinder |
| CN110273891A (en) * | 2019-07-30 | 2019-09-24 | 安徽马钢张庄矿业有限责任公司 | A kind of stroke oil cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111412192A (en) | 2020-07-14 |
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Effective date of registration: 20220830 Address after: 225261 Baizhuang group, Gaopeng village, Shaobo Town, Jiangdu District, Yangzhou City, Jiangsu Province Applicant after: YANGZHOU CITY JIANGSU OIL TRADING & INDUSTRY CO.,LTD. Address before: 8 / F, block B, Yonggang modern Ming building, 188 Jinghua Road, high tech Zone, Ningbo, Zhejiang 315000 Applicant before: Shao Yuqiang |
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