CN111140603A - Pneumatic push-pull force limiter - Google Patents
Pneumatic push-pull force limiter Download PDFInfo
- Publication number
- CN111140603A CN111140603A CN201911147657.XA CN201911147657A CN111140603A CN 111140603 A CN111140603 A CN 111140603A CN 201911147657 A CN201911147657 A CN 201911147657A CN 111140603 A CN111140603 A CN 111140603A
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- CN
- China
- Prior art keywords
- pull rod
- push
- pneumatic
- right push
- pull
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D9/00—Couplings with safety member for disconnecting, e.g. breaking or melting member
- F16D9/04—Couplings with safety member for disconnecting, e.g. breaking or melting member by tensile breaking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants
Abstract
The invention relates to a pneumatic push-pull force limiter which is arranged between a left push-pull rod and a right push-pull rod, wherein the right push-pull rod is movably sleeved in the left push-pull rod, the pneumatic torque limiter is arranged at the sleeved joint of the right push-pull rod and the left push-pull rod, a rod body of the right push-pull rod is provided with a plurality of rings of grooves, and when the pneumatic torque limiter is connected with gas with certain pressure, movable balls in the pneumatic torque limiter are embedded into the grooves of the right push-pull rod to form linkage of the right push-pull rod and the left push-pull rod. The pneumatic driving mode is adopted, the air source is air compression, and the defect that the original mechanical mode is easy to fatigue is overcome.
Description
The technical field is as follows:
the invention belongs to the technical field of motion limitation, and particularly relates to a pneumatic push-pull force limiter.
Background art:
at present, the known push-pull force limiter transmits displacement by the deformation of a special spring and transmits signals through a sensor, and has certain defects: easy deformation and short service life.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
The invention content is as follows:
the present invention aims to provide a pneumatic push-pull force limiter, which overcomes the above-mentioned drawbacks of the prior art.
In order to achieve the purpose, the invention provides a pneumatic push-pull force limiter which is arranged between a left push-pull rod and a right push-pull rod, wherein the right push-pull rod is movably sleeved in the left push-pull rod, the pneumatic torque limiter is arranged at the sleeved position of the right push-pull rod and the left push-pull rod, a rod body of the right push-pull rod is provided with a plurality of rings of grooves, and when the pneumatic torque limiter is connected with certain pressure gas, movable balls in the pneumatic torque limiter are embedded into the grooves of the right push-pull rod to form linkage of the right push-pull rod and the left push-pull rod.
The invention further defines the technical scheme as follows:
furthermore, the inner wall of the pneumatic torque limiter sleeved with the right push-pull rod is provided with a step which is radially expanded outwards, a circle of balls are placed on the step, the right side of each ball is provided with a retainer ring, the pneumatic torque limiter is provided with a positive pressure gas channel communicated with the retainer ring and a gas source, and when certain pressure gas is introduced into the positive pressure gas channel, the retainer ring presses the balls to be tightly attached to the outer walls of the step and the right push-pull rod; when the right push-pull rod moves to a proper station relative to the left push-pull rod, the ball is just embedded into the groove of the right push-pull rod to form linkage of the right push-pull rod and the left push-pull rod.
Furthermore, the end part of the check ring is provided with a tapered cavity for containing the ball, the tapered cavity is wide at the left and narrow at the right, and when the check ring is pushed by air pressure to approach the ball, the tapered cavity pushes the ball to abut against the rod body of the right push-pull rod.
Furthermore, the overload signal sensor transmits an electric signal through a displacement signal, namely, the left and right end members have small displacement at the moment of overload, the steel ball slides out of the groove and is completely released, and the steel ball idles and cannot automatically reset even if continuously operated for a long time; the reset mode is that the air pressure is adjusted to a set pressure, the displacement of the left and right end components is changed, and the ball is automatically reset after being automatically meshed with the groove again at the meshing point of the next minimum angle after restarting.
We use a pneumatic form to solve this problem. The pneumatic push-pull force limiter is a pneumatic control torque limiter, a precise ball mechanism is arranged in the pneumatic push-pull force limiter, and the driving transmission and the driven transmission can be completely disconnected at the moment of overload; the overload releasing torque and the air pressure are in a linear proportional relation, and can be dynamically controlled in real time by adjusting the pressure of an air source; the overload signal sensor can output 24V DC signal at overload moment, and is used for instantaneous release of air pressure, shutdown, alarm and other functions.
Compared with the prior art, the invention has the following beneficial effects:
and the implementation is realized.
Description of the drawings:
FIG. 1 is a schematic view of the motion state of the present invention;
FIG. 2 is a partially enlarged schematic view;
FIG. 3 is a partially enlarged schematic view;
in the figure: 1. the device comprises a left side push-pull rod, 2 a sensor mounting bracket, 3 an inner hexagon bolt, 4 an overload signal sensor, 5 a sensor induction inner rod, 6 an inner hexagon bolt, 7 a pneumatic torque limiter and 8 a right side push-pull rod.
The specific implementation mode is as follows:
the following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
A pneumatic push-pull force limiter is arranged between a left push-pull rod and a right push-pull rod, the right push-pull rod is movably sleeved in the left push-pull rod, a pneumatic torque limiter is arranged at the sleeved position of the right push-pull rod and the left push-pull rod, a rod body of the right push-pull rod is provided with a plurality of rings of grooves, and when the pneumatic torque limiter is connected with gas with certain pressure, movable balls in the pneumatic torque limiter are embedded into the grooves of the right push-pull rod to form linkage of the right push-pull rod and the left push-pull rod.
The inner wall of the pneumatic torque limiter sleeved with the right push-pull rod is provided with a step which expands radially outwards, a circle of balls are placed on the step, a retainer ring is arranged on the right side of the balls, the pneumatic torque limiter is provided with a positive pressure gas channel communicated with the retainer ring and a gas source, and when certain pressure gas is introduced into the positive pressure gas channel, the retainer ring presses the balls to be tightly attached to the outer walls of the step and the right push-pull rod; when the right push-pull rod moves to a proper station relative to the left push-pull rod, the ball is just embedded into the groove of the right push-pull rod to form linkage of the right push-pull rod and the left push-pull rod.
The end part of the retainer ring is provided with a tapered cavity for containing the ball, the tapered cavity is wide at the left and narrow at the right, and when the retainer ring is pushed by air pressure to approach the ball, the tapered cavity pushes the ball to abut against the rod body of the right push-pull rod.
The overload signal sensor transmits an electric signal through a displacement signal, namely, components at the left end and the right end have small displacement at the moment of overload, the steel ball slides out of the groove and is completely released, and the steel ball idles even if continuously operated for a long time and cannot automatically reset; the reset mode is that the air pressure is adjusted to a set pressure, the displacement of the left and right end components is changed, and the ball is automatically reset after being automatically meshed with the groove again at the meshing point of the next minimum angle after restarting.
We use a pneumatic form to solve this problem. The pneumatic push-pull force limiter is a pneumatic control torque limiter, a precise ball mechanism is arranged in the pneumatic push-pull force limiter, and the driving transmission and the driven transmission can be completely disconnected at the moment of overload; the overload releasing torque and the air pressure are in a linear proportional relation, and can be dynamically controlled in real time by adjusting the pressure of an air source; the overload signal sensor can output 24V DC signal at overload moment, and is used for instantaneous release of air pressure, shutdown, alarm and other functions.
Under the normal state, the clutch is in the engaged state, and the torque can be integrally transmitted by applying pressure through air pressure.
The steel ball slides out of the groove at the moment of overload, and is completely released, so that the steel ball can run idle even if the steel ball continues to run for a long time, and cannot automatically reset.
The resetting mode is as follows: the air pressure is adjusted to the set pressure, and the automatic reset is carried out after the machine is restarted.
Structural characteristics are described:
a plurality of balls are embedded in the grooves at a very small average angle; when overload occurs, the ball slides out of the groove to be separated; after the overload is eliminated, the air source pressure is increased, the machine is restarted, and the ball is automatically meshed with the groove again at the meshing point with the next minimum angle; when resetting, the device can be engaged in forward and reverse rotation when running at low speed.
In order to avoid the defect that a spring is easy to fatigue, a pneumatic driving mode is adopted, and an air source is air compression, so that the defect that the original mechanical type is easy to fatigue is overcome.
Structural description:
the concrete structure is simple to introduce: the sensor mounting bracket 2 and the overload signal sensor 4 are mounted together, then the sensor mounting bracket and the overload signal sensor are mounted on the left side push-pull rod 1, and are combined with the hexagon socket head cap screw 3 and mounted at the left end of the pneumatic torque limiter 7; the right push-pull rod 8 is mounted at the right end of the pneumatic torque limiter 7.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. The utility model provides a pneumatic push-and-pull force limiter, installs between left side push-and-pull rod and right side push-and-pull rod which characterized in that: the pneumatic torque limiter is characterized in that the right push-pull rod is movably sleeved in the left push-pull rod, the pneumatic torque limiter is assembled at the sleeved joint of the right push-pull rod and the left push-pull rod, a rod body of the right push-pull rod is provided with a plurality of rings of grooves, and when the pneumatic torque limiter is connected with gas with certain pressure, movable balls in the pneumatic torque limiter are embedded into the grooves of the right push-pull rod to form linkage of the right push-pull rod and the left push-pull rod.
2. The pneumatic push-pull force limiter of claim 1, wherein: the pneumatic torque limiter is provided with a positive pressure gas channel communicated with the retainer ring and a gas source, and when gas with certain pressure is introduced into the positive pressure gas channel, the retainer ring presses the balls to be tightly attached to the outer walls of the step and the right push-pull rod; when the right push-pull rod moves to a proper station relative to the left push-pull rod, the ball is just embedded into the groove of the right push-pull rod to form linkage of the right push-pull rod and the left push-pull rod.
3. The pneumatic push-pull force limiter of claim 2, wherein: the end part of the retainer ring is provided with a tapered cavity for containing the ball, the tapered cavity is wide at the left and narrow at the right, and when the retainer ring is pushed by air pressure to approach the ball, the tapered cavity pushes the ball to abut against the rod body of the right push-pull rod.
4. The pneumatic push-pull force limiter of claim 2, wherein: the overload signal sensor transmits an electric signal through a displacement signal, namely, components at the left end and the right end have small displacement at the moment of overload, the steel ball slides out of the groove and is completely released, and the steel ball idles even if continuously operated for a long time and cannot automatically reset; the reset mode is that the air pressure is adjusted to a set pressure, the displacement of the left and right end components is changed, and the ball is automatically reset after being automatically meshed with the groove again at the meshing point of the next minimum angle after restarting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911147657.XA CN111140603A (en) | 2019-11-21 | 2019-11-21 | Pneumatic push-pull force limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911147657.XA CN111140603A (en) | 2019-11-21 | 2019-11-21 | Pneumatic push-pull force limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111140603A true CN111140603A (en) | 2020-05-12 |
Family
ID=70517225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911147657.XA Pending CN111140603A (en) | 2019-11-21 | 2019-11-21 | Pneumatic push-pull force limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111140603A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB797041A (en) * | 1954-04-02 | 1958-06-25 | Perkins F Ltd | Improvements in or relating to release mechanisms |
| DE2650095A1 (en) * | 1976-10-30 | 1978-05-11 | Pietruska Kg Friedr | Machine thrust limiter for packing machines - has spring-loader ring supporting spheres positioned between housing and stepped portion embraced by housing |
| DE3309708A1 (en) * | 1983-03-18 | 1984-09-20 | Robert Bosch Gmbh, 7000 Stuttgart | Electrical generator having a speed-limited fan coupling for a motor vehicle. |
| DE3910887C1 (en) * | 1989-04-04 | 1990-05-17 | Chr. Mayr Gmbh + Co Kg, 8951 Mauerstetten, De | Overload element |
| DE3611617C1 (en) * | 1986-04-07 | 1992-12-10 | Ringspann Maurer Kg A | Device for releasably locking a bolt |
| JP2005188639A (en) * | 2003-12-25 | 2005-07-14 | Sanden Corp | Power transmission device |
| EP1672250A1 (en) * | 2004-12-20 | 2006-06-21 | Sanden Corporation | Power transmission device |
| JP2007327572A (en) * | 2006-06-08 | 2007-12-20 | Tsubaki Yamakyu Chain Co | Torque limiter |
| CN102701047A (en) * | 2012-06-11 | 2012-10-03 | 刘振刚 | Light roller cage ear with gas spring hydraulic damper |
| US20120291989A1 (en) * | 2009-06-29 | 2012-11-22 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
| CN204283251U (en) * | 2014-07-01 | 2015-04-22 | 北京市三一重机有限公司 | Elevator and rotary drilling rig |
| CN205090016U (en) * | 2015-10-10 | 2016-03-16 | 福建省大通互惠阀门有限公司 | Disk seat with pretightning force design |
| CN105485198A (en) * | 2015-12-29 | 2016-04-13 | 武汉正通传动技术有限公司 | Push-pull force overload protective device |
| CN206468884U (en) * | 2017-01-20 | 2017-09-05 | 天津贝特尔流体控制阀门有限公司 | Safety cut-off valve pilot valve |
| US20180272516A1 (en) * | 2015-10-15 | 2018-09-27 | Robert Bosch Gmbh | Handheld power tool |
| CN208153561U (en) * | 2017-11-30 | 2018-11-27 | 南京工诺科技有限公司 | Middle transition telescopic shaft crown gear coupling |
| US20180355921A1 (en) * | 2017-06-07 | 2018-12-13 | Microtecnica S.R.L. | Torque-limiting device |
-
2019
- 2019-11-21 CN CN201911147657.XA patent/CN111140603A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB797041A (en) * | 1954-04-02 | 1958-06-25 | Perkins F Ltd | Improvements in or relating to release mechanisms |
| DE2650095A1 (en) * | 1976-10-30 | 1978-05-11 | Pietruska Kg Friedr | Machine thrust limiter for packing machines - has spring-loader ring supporting spheres positioned between housing and stepped portion embraced by housing |
| DE3309708A1 (en) * | 1983-03-18 | 1984-09-20 | Robert Bosch Gmbh, 7000 Stuttgart | Electrical generator having a speed-limited fan coupling for a motor vehicle. |
| DE3611617C1 (en) * | 1986-04-07 | 1992-12-10 | Ringspann Maurer Kg A | Device for releasably locking a bolt |
| DE3910887C1 (en) * | 1989-04-04 | 1990-05-17 | Chr. Mayr Gmbh + Co Kg, 8951 Mauerstetten, De | Overload element |
| JP2005188639A (en) * | 2003-12-25 | 2005-07-14 | Sanden Corp | Power transmission device |
| EP1672250A1 (en) * | 2004-12-20 | 2006-06-21 | Sanden Corporation | Power transmission device |
| JP2007327572A (en) * | 2006-06-08 | 2007-12-20 | Tsubaki Yamakyu Chain Co | Torque limiter |
| US20120291989A1 (en) * | 2009-06-29 | 2012-11-22 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
| CN102701047A (en) * | 2012-06-11 | 2012-10-03 | 刘振刚 | Light roller cage ear with gas spring hydraulic damper |
| CN204283251U (en) * | 2014-07-01 | 2015-04-22 | 北京市三一重机有限公司 | Elevator and rotary drilling rig |
| CN205090016U (en) * | 2015-10-10 | 2016-03-16 | 福建省大通互惠阀门有限公司 | Disk seat with pretightning force design |
| US20180272516A1 (en) * | 2015-10-15 | 2018-09-27 | Robert Bosch Gmbh | Handheld power tool |
| CN105485198A (en) * | 2015-12-29 | 2016-04-13 | 武汉正通传动技术有限公司 | Push-pull force overload protective device |
| CN206468884U (en) * | 2017-01-20 | 2017-09-05 | 天津贝特尔流体控制阀门有限公司 | Safety cut-off valve pilot valve |
| US20180355921A1 (en) * | 2017-06-07 | 2018-12-13 | Microtecnica S.R.L. | Torque-limiting device |
| CN208153561U (en) * | 2017-11-30 | 2018-11-27 | 南京工诺科技有限公司 | Middle transition telescopic shaft crown gear coupling |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200512 |
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| RJ01 | Rejection of invention patent application after publication |