CN111853046A - Connecting rod with two-way anti-overload function - Google Patents
Connecting rod with two-way anti-overload function Download PDFInfo
- Publication number
- CN111853046A CN111853046A CN202010520919.9A CN202010520919A CN111853046A CN 111853046 A CN111853046 A CN 111853046A CN 202010520919 A CN202010520919 A CN 202010520919A CN 111853046 A CN111853046 A CN 111853046A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- joint
- shaft
- sleeve
- connecting rod
- 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
Links
Images
Classifications
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/04—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads with elastic intermediate part of fluid cushion
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/06—Adjustable connecting-rods
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/43—Aeroplanes; Helicopters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to a connecting rod with a bidirectional overload prevention function, belonging to the field of aircraft control systems; the device comprises a sleeve, a first joint, a second joint, a first sliding sleeve, a second sliding sleeve, an end cover, a spring and a shaft; two ends of the sleeve are respectively sealed through a first joint and an end cover, and the first joint is used for being connected with the driving module; one end of the shaft is provided with a positioning shaft shoulder, the middle part and the other end of the shaft are both provided with threads, one end of the positioning shaft shoulder penetrates through a center hole of the end cover and is coaxially inserted into a blind hole of the first joint, one end of the threads is in threaded connection with the second joint, and the second joint is used for being connected with the execution module; the first sliding sleeve, the spring and the second sliding sleeve are sequentially coaxially sleeved on the shaft, and the spring is compressed to generate initial elastic force which is larger than load to be transferred when the connecting rod normally works. The invention realizes the two-way overload protection of the tension or compression of the connecting rod by combining the pre-pressure generated by the compression of the spring with the movement relationship of the first sliding sleeve and the second sliding sleeve with the shaft and the sleeve.
Description
Technical Field
The invention belongs to the field of aircraft control systems, and particularly relates to a connecting rod with a bidirectional overload prevention function.
Background
When the actuating module is blocked or loaded more than the maximum driving force of the actuating module, the actuating module is overloaded, so that the actuating module fails or even is damaged. The existing connecting rod is subjected to overload protection by a shear pin, the pin is subjected to shear force in work, the shear stress applied to the pin in normal work is smaller than the shear strength of a pin material, the pin can normally transmit driving force and displacement, the shear stress of the pin is larger than the shear strength of the pin material when overload occurs, the pin is sheared, and the driving module is disconnected with the execution module. The mode can not be reused, the overload protection force can not be adjusted, the requirement on the specification of the pin is strict, and the use cost is high.
There is therefore a need for a connecting rod with a bidirectional overload protection to solve this problem.
Disclosure of Invention
The technical problem to be solved is as follows:
in order to avoid the defects of the prior art, the invention provides the connecting rod with the bidirectional overload prevention function, the bidirectional overload protection of the tension or compression of the connecting rod is provided through the elastic force of the compressed spring, the overload protection force is adjustable, the connecting rod can be repeatedly used, and the use cost is low. The problem of the connecting rod for the flight control system damage drive module when because execution module takes place the jamming or the load is too big is solved, drive module can be effectively protected.
The technical scheme of the invention is as follows: the utility model provides a connecting rod with two-way anti-overloading function which characterized in that: the device comprises a sleeve, a first joint, a second joint, a first sliding sleeve, a second sliding sleeve, an end cover, a spring and a shaft; openings at two ends of the sleeve are respectively sealed by a first connector and an end cover; the first joint is fixed with the sleeve, a blind hole is formed in the center of one end of the first joint, which is positioned in the sleeve, and the other end of the first joint is used for being connected with the driving module;
one end of the shaft is provided with a positioning shaft shoulder, the middle part and the other end of the shaft are both provided with threads, one end of the positioning shaft shoulder penetrates through the center hole of the end cover and is coaxially inserted into the blind hole of the first joint, and one end of the thread is in threaded connection with the second joint; the second joint is used for being connected with the execution module;
the first sliding sleeve, the spring and the second sliding sleeve are sequentially coaxially sleeved on the shaft, can relatively slide along the axial direction and are positioned in the sleeve; the positioning shaft shoulder of the shaft is positioned between the first sliding sleeve and the first joint and used for limiting the axial displacement of the first sliding sleeve; the middle thread of the shaft is positioned between the second sliding sleeve and the end cover, and the second sliding sleeve is limited by the axial displacement of a nut arranged on the middle thread; the spring is compressed by the first sliding sleeve and the second sliding sleeve which are arranged at two ends, and initial elastic force which is larger than load to be transferred when the connecting rod normally works can be generated.
The further technical scheme of the invention is as follows: the end cover is in threaded connection with the sleeve.
The further technical scheme of the invention is as follows: the first sliding sleeve is of a sleeve structure, and a circular ring boss is arranged on the outer peripheral surface of one end of the first sliding sleeve along the circumferential direction and used for limiting the axial displacement of the spring; the inner circumferential surface of the other end of the shaft is circumferentially provided with a circular ring boss which is matched with a shaft shoulder of the shaft and used for limiting the axial displacement of the shaft; the second sliding sleeve and the first sliding sleeve are the same in structure and are symmetrically arranged.
The further technical scheme of the invention is as follows: a cylindrical boss is arranged at the center of one side end face of the first joint facing the sleeve, and a blind hole is formed in the center of the cylindrical boss and used for being matched with and mounting one end of the shaft; the first sliding sleeve is coaxially sleeved on the outer peripheral surface of the cylindrical boss and ensures clearance fit, and meanwhile, the side wall of the circular boss arranged on the outer peripheral surface of the first sliding sleeve is attached to the end face of the first joint.
Advantageous effects
The invention has the beneficial effects that: the invention realizes the two-way overload protection of the tension or compression of the connecting rod by combining the prepressing force generated by the compression of the spring with the motion relation of the first sliding sleeve and the second sliding sleeve with the shaft and the sleeve, when the driving force returns to the normal size, the connecting rod returns to the normal state, and the prepressing force of the spring is changed by rotating the nut in threaded fit with the shaft to realize the adjustment of the overload force of the connecting rod, thereby reducing the requirement on the manufacturing accuracy of the spring, having simple structure, being capable of being repeatedly used and reducing the use cost.
Drawings
Fig. 1 is a schematic structural diagram of a connecting rod with a bidirectional overload prevention function according to the present invention.
Fig. 2 is a schematic view of a connecting rod with a bidirectional overload prevention function according to the present invention in a compressed state.
Fig. 3 is a schematic drawing showing the stretching state of a connecting rod with bidirectional overload prevention function according to the present invention.
Description of reference numerals: 1-first joint: 2-a first sliding sleeve; 3, a sleeve; 4-a spring; 5-axis; 6-a nut; 7-a second sliding sleeve; 8-end cap; 9-second joint.
Detailed Description
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
The following embodiments describe the connecting rod with bidirectional overload protection function in detail by combining a schematic structural diagram (fig. 1), a schematic compression state diagram (fig. 2) and a schematic tension state diagram (fig. 3):
the first connector 1 is fixed to the end A of the sleeve 3, and the end cap 8 is mounted to the end B of the sleeve by a screw-thread fit. The first sliding sleeve 2 and the second sliding sleeve 9 can slide in the sleeve 3 along the axial direction, and a raised shaft shoulder is arranged on the shaft 5 and used for driving the first sliding sleeve 2 to move axially towards the second joint 9 when the two ends of the connecting rod are pulled; the nut 6 is installed on the shaft 5 through thread fit for driving the second sliding sleeve 7 to move axially towards the first joint 1 when the two ends of the connecting rod are pressed. The spring 4 is arranged between the first sliding sleeve 2 and the second sliding sleeve 9 in the sleeve 3 and is compressed by the first sliding sleeve 2 and the second sliding sleeve 9 to generate initial elastic force which is larger than the load to be transferred when the connecting rod normally works; when the connecting rod normally pushes or pulls the execution module, the spring 4 cannot be compressed again because the initial elasticity of the spring 4 is greater than the driving force required by the execution module, and the connecting rod is equivalent to a common rod; when the execution module is blocked or the load is overlarge: a) in the process that the driving module pushes the connecting rod, the first joint 1 pushes the spring 4 to compress again through the first sliding sleeve 2, and at the moment, the connecting rod is equivalent to a compression spring which can be compressed and deformed; b) in the process of driving the module pull rod connecting rod, the first joint 1 pushes the spring 4 to be compressed again through the sleeve 3, the end cover 8 and the second sliding sleeve 7, and at the moment, the connecting rod is equivalent to an extension spring and can be stretched and deformed. The connecting rod can transmit driving force and displacement equivalent to a common connecting rod when normally working, and when the load is overlarge, the connecting rod releases the driving force and the displacement by the compression deformation of the spring 4 inside so as to protect the driving module, so that the driving module can be effectively protected.
The initial compression amount of the spring 4 can be adjusted by rotating the nut 6, so that the initial pressure of the spring 4 can be changed, the overload pressure of the adjusting connecting rod can be adjusted, and the end cover 8 can be rotated to the position attached to the second sliding sleeve 7 and fixed.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (4)
1. The utility model provides a connecting rod with two-way anti-overloading function which characterized in that: the device comprises a sleeve, a first joint, a second joint, a first sliding sleeve, a second sliding sleeve, an end cover, a spring and a shaft; openings at two ends of the sleeve are respectively sealed by a first connector and an end cover; the first joint is fixed with the sleeve, a blind hole is formed in the center of one end of the first joint, which is positioned in the sleeve, and the other end of the first joint is used for being connected with the driving module;
one end of the shaft is provided with a positioning shaft shoulder, the middle part and the other end of the shaft are both provided with threads, one end of the positioning shaft shoulder penetrates through the center hole of the end cover and is coaxially inserted into the blind hole of the first joint, and one end of the thread is in threaded connection with the second joint; the second joint is used for being connected with the execution module;
The first sliding sleeve, the spring and the second sliding sleeve are sequentially coaxially sleeved on the shaft, can relatively slide along the axial direction and are positioned in the sleeve; the positioning shaft shoulder of the shaft is positioned between the first sliding sleeve and the first joint and used for limiting the axial displacement of the first sliding sleeve; the middle thread of the shaft is positioned between the second sliding sleeve and the end cover, and the second sliding sleeve is limited by the axial displacement of a nut arranged on the middle thread; the spring is compressed by the first sliding sleeve and the second sliding sleeve which are arranged at two ends, and initial elastic force which is larger than load to be transferred when the connecting rod normally works can be generated.
2. The connecting rod with bidirectional overload prevention function according to claim 1, wherein: the end cover is in threaded connection with the sleeve.
3. The connecting rod with bidirectional overload prevention function according to claim 1, wherein: the first sliding sleeve is of a sleeve structure, and a circular ring boss is arranged on the outer peripheral surface of one end of the first sliding sleeve along the circumferential direction and used for limiting the axial displacement of the spring; the inner circumferential surface of the other end of the shaft is circumferentially provided with a circular ring boss which is matched with a shaft shoulder of the shaft and used for limiting the axial displacement of the shaft; the second sliding sleeve and the first sliding sleeve are the same in structure and are symmetrically arranged.
4. The connecting rod with bidirectional overload prevention function according to claim 1, wherein: a cylindrical boss is arranged at the center of one side end face of the first joint facing the sleeve, and a blind hole is formed in the center of the cylindrical boss and used for being matched with and mounting one end of the shaft; the first sliding sleeve is coaxially sleeved on the outer peripheral surface of the cylindrical boss and ensures clearance fit, and meanwhile, the side wall of the circular boss arranged on the outer peripheral surface of the first sliding sleeve is attached to the end face of the first joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520919.9A CN111853046A (en) | 2020-06-10 | 2020-06-10 | Connecting rod with two-way anti-overload function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520919.9A CN111853046A (en) | 2020-06-10 | 2020-06-10 | Connecting rod with two-way anti-overload function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111853046A true CN111853046A (en) | 2020-10-30 |
Family
ID=72986388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010520919.9A Pending CN111853046A (en) | 2020-06-10 | 2020-06-10 | Connecting rod with two-way anti-overload function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111853046A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338496A (en) * | 2021-06-10 | 2021-09-03 | 上海建工集团股份有限公司 | Method for connecting inner curtain wall and outer curtain wall |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1158795A (en) * | 1966-10-21 | 1969-07-16 | Caterpillar Tractor Co | Resilient Link Construction |
| GB1488163A (en) * | 1974-02-01 | 1977-10-05 | Cav Ltd | Linkage mechanism |
| US4132488A (en) * | 1978-05-16 | 1979-01-02 | Strong Howard D | Compressible bow adjuster |
| US4191280A (en) * | 1976-08-23 | 1980-03-04 | Uni-Drive (Tractors) Limited | Mechanical link members |
| US4427398A (en) * | 1980-10-29 | 1984-01-24 | Thyssen Industrie Aktiengesellschaft | Device for coupling and uncoupling two parts movable relative to each other using a length-variable guide rod |
| CN102011792A (en) * | 2010-11-08 | 2011-04-13 | 吉林大学 | Buffer type connecting rod capable of axially and freely extending and retracting and being locked and fixed |
| CN109185410A (en) * | 2018-09-18 | 2019-01-11 | 深圳市智康新能科技有限公司 | High-precision push rod |
-
2020
- 2020-06-10 CN CN202010520919.9A patent/CN111853046A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1158795A (en) * | 1966-10-21 | 1969-07-16 | Caterpillar Tractor Co | Resilient Link Construction |
| GB1488163A (en) * | 1974-02-01 | 1977-10-05 | Cav Ltd | Linkage mechanism |
| US4191280A (en) * | 1976-08-23 | 1980-03-04 | Uni-Drive (Tractors) Limited | Mechanical link members |
| US4132488A (en) * | 1978-05-16 | 1979-01-02 | Strong Howard D | Compressible bow adjuster |
| US4427398A (en) * | 1980-10-29 | 1984-01-24 | Thyssen Industrie Aktiengesellschaft | Device for coupling and uncoupling two parts movable relative to each other using a length-variable guide rod |
| CN102011792A (en) * | 2010-11-08 | 2011-04-13 | 吉林大学 | Buffer type connecting rod capable of axially and freely extending and retracting and being locked and fixed |
| CN109185410A (en) * | 2018-09-18 | 2019-01-11 | 深圳市智康新能科技有限公司 | High-precision push rod |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338496A (en) * | 2021-06-10 | 2021-09-03 | 上海建工集团股份有限公司 | Method for connecting inner curtain wall and outer curtain wall |
| CN113338496B (en) * | 2021-06-10 | 2022-10-11 | 上海建工集团股份有限公司 | Method for connecting inner curtain wall and outer curtain wall |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103984087B (en) | Primary mirror axial support push-pull effort overload protecting mechanism | |
| CN111853046A (en) | Connecting rod with two-way anti-overload function | |
| US5950774A (en) | Load limiter | |
| CN203114879U (en) | Adaptive regulator of connecting rod mechanism | |
| US11473656B2 (en) | Linear actuator | |
| CN109178350B (en) | Telescopic driving device with tension and compression bidirectional buffering function | |
| CN104632934B (en) | Servo Turret knife rest overload protection arrangement | |
| WO2016104092A1 (en) | Screw feeding device and actuator using same | |
| CN202346664U (en) | Movable arm tower crane and anti-back-tipping limiting device thereof | |
| CN213632167U (en) | Trigger type sensor protection device | |
| CN111622401A (en) | Node connecting device between curtain wall structure and building main body | |
| ITMI981806A1 (en) | TORQUE LIMITING CLUTCH | |
| US4882459A (en) | Pressure sensitive switch having rugged construction and accurate trip pressure settings | |
| CN212984312U (en) | Node connecting device between curtain wall structure and building main body | |
| CN215060378U (en) | Pressure type compensator equipment for straight pipe with ultra-large pipe diameter | |
| CN104966642A (en) | Push rod and releasing device using the same, and operation mechanism | |
| CN211015159U (en) | Constant torque force controller | |
| CN213541112U (en) | Safety coupling | |
| US11401726B2 (en) | Base isolation unit and base isolation apparatus | |
| CN107327536A (en) | A kind of bourdon tube | |
| CN210919891U (en) | Torsion limiter | |
| CA1299899C (en) | Rotary/linear actuator | |
| CN115303493B (en) | Release device for aircraft cockpit control system | |
| CN206539584U (en) | A kind of anti-loose fastening assembly of automatic spacing | |
| CN218317293U (en) | Release mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201030 |
|
| WD01 | Invention patent application deemed withdrawn after publication |