CN111219379A - Plunger rod rotary type plunger hydraulic cylinder for construction machinery - Google Patents
Plunger rod rotary type plunger hydraulic cylinder for construction machinery Download PDFInfo
- Publication number
- CN111219379A CN111219379A CN202010123142.2A CN202010123142A CN111219379A CN 111219379 A CN111219379 A CN 111219379A CN 202010123142 A CN202010123142 A CN 202010123142A CN 111219379 A CN111219379 A CN 111219379A
- Authority
- CN
- China
- Prior art keywords
- rod
- plunger
- plunger rod
- rotating
- control panel
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- 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
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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
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
- F15B15/063—Actuator having both linear and rotary output, i.e. dual action actuator
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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
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
- F15B15/068—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
Abstract
The invention discloses a plunger rod rotating type plunger hydraulic cylinder for construction machinery, and belongs to the technical field of indoor equipment of buildings. The upper end of the plunger rod is rotationally connected with a rotating rod through a thrust bearing; the rotating rod is provided with a plurality of thread grooves; the upper end of the cylinder body is fixedly connected with a control panel through a support rod; the middle part of the control panel is provided with a central hole, and the rotating rod passes through the central hole of the control panel; a plurality of limiting rods which correspond to the thread grooves one to one are movably mounted on the control panel, and the end parts of the limiting rods are matched with the corresponding thread grooves. When the hydraulic cylinder is fed with oil, the piston and the plunger rod are pushed to move upwards, so that the rotating rod is pushed to extend out and rotate, and when the hydraulic cylinder returns oil, the piston, the plunger rod and the upper part move downwards and reset by dead weight; according to the cooperation of using different gag lever post, thread groove, the slew velocity when can changing the rotary rod and stretching out adapts to different stage operating mode requirements.
Description
Technical Field
The invention relates to building indoor equipment and the technical field of hydraulic transmission, in particular to a plunger rod rotating type plunger hydraulic cylinder for building machinery.
Background
The hydraulic cylinder is a common hydraulic actuating element, is used for realizing reciprocating motion, and is widely applied to various fields. Under some special working conditions, some unconventional functional requirements can be imposed on the hydraulic cylinder. For example, in some exhibition or performance activities, rotatable lifting platforms are often used, and to meet these practical needs, rotary hydraulic cylinders are present.
For example, a telescopic rotary hydraulic cylinder (CN 102322457A) disclosed in chinese patent comprises a cylinder body, a piston and a piston rod, wherein the piston rod is disposed on both sides of the piston, a rotary guide device is disposed between the piston rod on at least one side of the piston and the cylinder body, the rotary guide device comprises a spiral guide groove disposed on the piston rod, a limit plug screw is fixed on the inner wall of the cylinder body in cooperation with the spiral guide groove, and the limit plug screw is clamped in the spiral guide groove and can slide along the spiral guide groove. Above-mentioned flexible rotation type pneumatic cylinder adds spiral guide way and spacer pin of mutually supporting between piston rod and cylinder body, and when the piston rod of pneumatic cylinder was making rectilinear motion, the spacer pin of card in the spiral guide way will order about the piston rod and take place to rotate simultaneously to realize the piston rod and accomplish rotatory action when being rectilinear motion.
It has the following problems in the practical use process: for a piston and a piston rod of the hydraulic cylinder, the piston and the piston rod are not suitable for rotating in the expansion process, so that abrasion damage is generated on sealing and guiding devices of the piston and the piston rod; in most hydraulic cylinders, one would design a specific anti-rotation structure to prevent rotation; in the above technology, the piston and the piston rod both rotate, which is disadvantageous to the sealing and guiding device; in addition, the rotating speed of the piston rod in the whole stroke is not adjustable, and the piston rod is difficult to adapt to various rotating speed requirements.
Disclosure of Invention
In order to solve the technical problem, the invention provides a plunger rod rotating type plunger hydraulic cylinder for construction machinery.
The invention is realized by the following technical scheme: a kind of building machinery rotates the piston fluid cylinder with the piston rod, including cylinder block and piston, piston installed in cylinder block; the upper end of the plunger rod is rotatably connected with a rotating rod through a thrust bearing; the rotating rod is provided with a plurality of thread grooves; the upper end of the cylinder body is fixedly connected with a control panel through a support rod; the middle part of the control panel is provided with a central hole, and the rotating rod passes through the central hole of the control panel; a plurality of limiting rods which correspond to the thread grooves one to one are movably mounted on the control panel, and the end parts of the limiting rods are matched with the corresponding thread grooves.
It further comprises the following steps: the thread pitches of the plurality of thread grooves are different, and the groove widths and the groove depths of the plurality of thread grooves are different.
And the end part of the limiting rod is provided with a roller which is matched with the corresponding thread groove in a rolling way.
The control panel is fixedly provided with lug plates which are uniformly distributed, and threaded holes are formed in the lug plates; the limiting rod is a threaded rod and is installed on the corresponding ear plate through threaded connection.
The upper end of the cylinder body is fixedly connected with an upper flange, an upper end cover is arranged at an upper port of the cylinder body, and the periphery of the upper end cover is fixedly connected with the upper flange; the middle part of the upper end cover is provided with a central hole, and the plunger rod penetrates through the central hole of the upper end cover; and a guide ring and an upper sealing ring are arranged between the central hole of the upper end cover and the plunger rod.
The lower end of the cylinder body is fixedly connected with a lower flange, a lower end cover is installed at the lower end port of the cylinder body, and the periphery of the lower end cover is fixedly connected with the lower flange.
The piston is in threaded connection with the plunger rod, and a lower sealing ring is mounted on the circumferential surface of the piston.
Compared with the prior art, the invention has the beneficial effects that:
when oil is fed into the hydraulic cylinder, the piston and the plunger rod are pushed to move upwards, and then the rotating rod is pushed to extend out and rotate;
2, according to the cooperation that uses different gag lever post, thread groove, the slew velocity when can changing the rotary rod and stretch out adapts to different stage operating mode requirements.
Drawings
FIG. 1 is a schematic structural view of the present invention;
3 FIG. 32 3 is 3 a 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3
In the figure: 1. a cylinder body; 2. a lower end cover; 3. a lower flange; 4. a lower seal ring; 5. a piston; 6. a plunger rod; 7. an upper flange; 8. an upper end cover; 9. a guide ring; 10. an upper sealing ring; 11. a stay bar; 12. a control panel; 13. a thrust bearing; 14. rotating the rod; 14-1, thread groove; 15. a limiting rod; 15-1, rollers; 16. an ear plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, a plunger rod rotary type plunger hydraulic cylinder for construction machinery, a cylinder body 1 is cylindrical, an upper flange 7 is fixedly connected to the upper end of the cylinder body 1, and a lower flange 3 is fixedly connected to the lower end of the cylinder body 1; inner rabbets are respectively arranged on the upper flange 7 and the lower flange 3. An upper end cover 8 is installed at the upper port of the cylinder body 1, and the periphery of the upper end cover 8 is fixedly connected with the upper flange 7 through bolts. The middle part of the upper end cover 8 is provided with a central hole, and the plunger rod 6 passes through the central hole of the upper end cover 8. The central hole of the upper end cover 8 is provided with a guide ring 9 and an upper sealing ring 10 which are matched with the plunger rod 6. A lower end cover 2 is arranged at the lower end opening of the cylinder body 1, and the periphery of the lower end cover 2 is fixedly connected with a lower flange 3; sealing rings are arranged between the upper end cover 8, the lower end cover 2 and the inner wall of the cylinder body 1. The piston 5 is in threaded connection with the plunger rod 6, and the lower sealing ring 4 matched with the inner wall of the cylinder body 1 is arranged on the circumferential surface of the piston 5.
The upper end of the plunger rod 6 is rotationally connected with a rotating rod 14 through a thrust bearing 13; the upper end of the cylinder body 1 is fixedly connected with a control panel 12 through a support rod 11; the control disc 12 has a central hole in the middle, and the rotating rod 14 passes through the central hole of the control disc 12. The rotating rod 14 is provided with a plurality of thread grooves 14-1; the control panel 12 is movably provided with a plurality of limiting rods 15 which are in one-to-one correspondence with the thread grooves 14-1, and the end parts of the limiting rods 15 are matched with the corresponding thread grooves 14-1. Specifically, the method comprises the following steps: the control panel 12 is fixed with lug plates 16 which are uniformly distributed, and the lug plates 16 are provided with threaded holes; the limiting rod 15 is a threaded rod, and the limiting rod 15 is installed on the corresponding ear plate 16 through threaded connection.
When in use, a pair of rotating rods 14 and thread grooves 14-1 are selected to be matched, and the rotating rods 14 and the thread grooves 14-1 are not matched. The cooperation of using different gag lever post, thread groove can change the slew velocity when the rotary rod stretches out, adapts to different stage operating mode requirements. The thread pitches of the plurality of thread grooves 14-1 are different, and the groove widths and the groove depths of the plurality of thread grooves 14-1 are also different. The end part of the limiting rod 15 is provided with a roller 15-1, and the roller 15-1 is in rolling fit with the corresponding thread groove 14-1. Due to the different groove widths and the different groove depths of the thread grooves 14-1, the roller 15-1 does not have a stroke disorder when driving to the intersection of a plurality of thread grooves 14-1.
The working principle is as follows:
by rotating the limiting rod 15, a pair of rotating rods 14 is selected to be matched with the thread groove 14-1; it is not matched with the rotating rod 14 and the thread groove 14-1;
when the hydraulic cylinder is filled with oil, the piston, the plunger rod and the rotating rod 14 are pushed to move upwards;
the rotating rod 14 is matched with the thread groove 14-1, so that the rotating rod 14 rotates; the effect of rotary extension is achieved;
when the hydraulic cylinder returns oil, the piston, the plunger rod and the upper part move downwards to reset by self weight.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A plunger rod rotary type plunger hydraulic cylinder for construction machinery comprises a cylinder body (1), a plunger rod (6) and a piston (5), wherein the plunger rod (6) and the piston are installed in the cylinder body (1); the method is characterized in that: the upper end of the plunger rod (6) is rotationally connected with a rotating rod (14) through a thrust bearing (13); the rotating rod (14) is provided with a plurality of thread grooves (14-1); the upper end of the cylinder body (1) is fixedly connected with a control panel (12) through a support rod (11); the middle part of the control panel (12) is provided with a central hole, and the rotating rod (14) penetrates through the central hole of the control panel (12); the control panel (12) is movably provided with a plurality of limiting rods (15) which are in one-to-one correspondence with the thread grooves (14-1), and the end parts of the limiting rods (15) are matched with the corresponding thread grooves (14-1).
2. The plunger rod-rotating plunger cylinder for construction machinery according to claim 1, wherein: the thread pitches of the thread grooves (14-1) are different, and the groove widths and the groove depths of the thread grooves (14-1) are different.
3. The plunger rod-rotating plunger cylinder for construction machinery according to claim 2, wherein: the end part of the limiting rod (15) is provided with a roller (15-1), and the roller (15-1) is in rolling fit with the corresponding thread groove (14-1).
4. The plunger rod-rotating plunger cylinder for construction machinery according to claim 1, wherein: the control panel (12) is fixed with lug plates (16) which are uniformly distributed, and the lug plates (16) are provided with threaded holes; the limiting rod (15) is a threaded rod, and the limiting rod (15) is installed on the corresponding ear plate (16) through threaded connection.
5. The plunger rod-rotating plunger cylinder for construction machinery according to claim 1, wherein: the upper end of the cylinder body (1) is fixedly connected with an upper flange (7), an upper end cover (8) is installed at an upper port of the cylinder body (1), and the periphery of the upper end cover (8) is fixedly connected with the upper flange (7); a central hole is formed in the middle of the upper end cover (8), and the plunger rod (6) penetrates through the central hole of the upper end cover (8); and a guide ring (9) and an upper sealing ring (10) are arranged between the central hole of the upper end cover (8) and the plunger rod (6).
6. The plunger rod-rotating plunger cylinder for construction machinery according to claim 1, wherein: the lower end of the cylinder body (1) is fixedly connected with a lower flange (3), a lower end cover (2) is installed at a lower end opening of the cylinder body (1), and the periphery of the lower end cover (2) is fixedly connected with the lower flange (3).
7. The plunger rod-rotating plunger cylinder for construction machinery according to claim 1, wherein: the piston (5) is in threaded connection with the plunger rod (6), and a lower sealing ring (4) is mounted on the circumferential surface of the piston (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010123142.2A CN111219379A (en) | 2020-02-27 | 2020-02-27 | Plunger rod rotary type plunger hydraulic cylinder for construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010123142.2A CN111219379A (en) | 2020-02-27 | 2020-02-27 | Plunger rod rotary type plunger hydraulic cylinder for construction machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111219379A true CN111219379A (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010123142.2A Pending CN111219379A (en) | 2020-02-27 | 2020-02-27 | Plunger rod rotary type plunger hydraulic cylinder for construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111219379A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153860A (en) * | 2021-05-08 | 2021-07-23 | 潍坊力创电子科技有限公司 | Telescopic reciprocating mechanism |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201696388U (en) * | 2010-06-23 | 2011-01-05 | 徐州惠科自动化工程有限公司 | Driving cylinder of which piston rod capable of conducting combination movement of linear and rotation |
| CN104308612A (en) * | 2014-10-13 | 2015-01-28 | 重庆金仑工业股份有限公司 | Pneumatic rotary clamping device |
| CN206539549U (en) * | 2017-01-17 | 2017-10-03 | 天津诚瑞昌泽科技有限公司 | Hydraulic cylinder with compound motion function |
| CN107654439A (en) * | 2017-09-30 | 2018-02-02 | 重庆维庆液压机械有限公司 | Rotatable hydraulic cylinder |
| CN107676329A (en) * | 2017-09-30 | 2018-02-09 | 重庆维庆液压机械有限公司 | The method of work of rotatable hydraulic cylinder |
| CN107687456A (en) * | 2016-08-04 | 2018-02-13 | 大连精维液压技术有限公司 | A kind of special high pulling torque rotary type joint power device |
| CN208578800U (en) * | 2018-07-10 | 2019-03-05 | 新乡市鑫德机械有限公司 | One kind can corner oil cylinder |
| CN210087717U (en) * | 2018-09-26 | 2020-02-18 | 朱崧源 | Telescopic rotary hydraulic cylinder |
-
2020
- 2020-02-27 CN CN202010123142.2A patent/CN111219379A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201696388U (en) * | 2010-06-23 | 2011-01-05 | 徐州惠科自动化工程有限公司 | Driving cylinder of which piston rod capable of conducting combination movement of linear and rotation |
| CN104308612A (en) * | 2014-10-13 | 2015-01-28 | 重庆金仑工业股份有限公司 | Pneumatic rotary clamping device |
| CN107687456A (en) * | 2016-08-04 | 2018-02-13 | 大连精维液压技术有限公司 | A kind of special high pulling torque rotary type joint power device |
| CN206539549U (en) * | 2017-01-17 | 2017-10-03 | 天津诚瑞昌泽科技有限公司 | Hydraulic cylinder with compound motion function |
| CN107654439A (en) * | 2017-09-30 | 2018-02-02 | 重庆维庆液压机械有限公司 | Rotatable hydraulic cylinder |
| CN107676329A (en) * | 2017-09-30 | 2018-02-09 | 重庆维庆液压机械有限公司 | The method of work of rotatable hydraulic cylinder |
| CN208578800U (en) * | 2018-07-10 | 2019-03-05 | 新乡市鑫德机械有限公司 | One kind can corner oil cylinder |
| CN210087717U (en) * | 2018-09-26 | 2020-02-18 | 朱崧源 | Telescopic rotary hydraulic cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153860A (en) * | 2021-05-08 | 2021-07-23 | 潍坊力创电子科技有限公司 | Telescopic reciprocating mechanism |
| CN113153860B (en) * | 2021-05-08 | 2022-07-08 | 潍坊力创电子科技有限公司 | Telescopic reciprocating mechanism |
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Application publication date: 20200602 |
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| RJ01 | Rejection of invention patent application after publication |