CN109110109B - Main bearing structure of bearing support rod device - Google Patents
Main bearing structure of bearing support rod device Download PDFInfo
- Publication number
- CN109110109B CN109110109B CN201810973987.3A CN201810973987A CN109110109B CN 109110109 B CN109110109 B CN 109110109B CN 201810973987 A CN201810973987 A CN 201810973987A CN 109110109 B CN109110109 B CN 109110109B
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- ring
- bearing
- piston rod
- bearing structure
- support
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- 230000006978 adaptation Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/22—Operating mechanisms fluid
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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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/04—Clamping or clipping connections
- F16B7/0406—Clamping or clipping connections for rods or tubes being coaxial
Abstract
The invention relates to the design of a high-bearing support rod device, in particular to a main bearing structure of the high-bearing support rod device. The supporting rod device is used for solving the problems of high bearing capacity and fatigue of the supporting rod device. According to the main force bearing structure of the bearing support rod device, the clamping ring is supported through the support bushing on the piston rod during locking, so that the clamping ring extends circumferentially, and the clamping ring is clamped among the first ring groove of the end cover, the limiting ring of the piston rod and the notch of the support bushing, so that the piston rod is connected with the end cover; the connecting structure can meet the high bearing requirement and is not easy to generate fatigue.
Description
Technical Field
The invention belongs to the field of design of high-bearing support rod devices, and particularly relates to a main bearing structure of a bearing support rod device.
Background
The common main bearing structure of the stay bar or the retractable actuator cylinder is often connected through threads, the thread stress form is complex, the manufacturing process has great influence on the thread quality, the threaded connection can meet the bearing and fatigue requirements of products under lower load, but the products under ultrahigh load have the advantages that the parts of the threaded connection are easy to fatigue and damage under limited structural size, the bearing requirements of the products cannot be met, and the reliability of the products is reduced.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The invention aims to provide a main bearing structure of a bearing support rod device, which aims to solve the problem that the bearing support rod device is unstable in connection.
The technical scheme of the invention is as follows:
a main bearing structure for bearing a support rod device is characterized by comprising:
a limiting ring is arranged at one end part of the piston rod;
the supporting bushing is sleeved on the piston rod in a sliding mode along the axis direction of the piston rod, and a notch is formed in one end, close to the limiting ring, of the supporting bushing;
the clamping ring is sleeved on the piston rod and is positioned between the support bushing and the limiting ring;
one end of the end cover is of a sleeve structure, an annular groove is formed in the inner wall of the sleeve structure, and at least part of the limiting ring is arranged in the annular groove; wherein
When the main bearing structure of the bearing support rod device is locked, the support bushing moves towards the direction of the limiting ring, the clamping ring is extruded onto the notch, and the notch, the limiting ring and the ring groove clamp the clamping ring, so that the axial movement of the clamping ring is limited;
when the main force bearing structure of the bearing support rod device is unlocked, the support bushing moves towards the direction far away from the limiting ring, and the clamping ring is separated from the notch and restores to the state before locking.
Optionally, a pin shaft is vertically arranged on one surface of the support bushing facing the piston rod, a mounting hole is arranged on the side wall of the piston rod, the pin shaft is mounted in the mounting hole, and the diameter of the mounting hole is larger than that of the pin shaft.
Optionally, the number of the mounting holes and the number of the pin shafts are at least 2, and the mounting holes and the pin shafts are symmetrically distributed along the circumferential direction of the piston rod.
Optionally, the edge of the bottom surface of the notch is smoothly curved.
Optionally, the shape of the surface of the limiting ring, which is in contact with the annular groove, is matched with the shape of the annular groove.
Optionally, the method further comprises:
the support ring is sleeved on the piston rod and is positioned between the clamping ring and the limiting ring.
Optionally, one surface of the limiting ring facing the supporting ring is set to be a smooth arc-shaped surface, and the one surface of the supporting ring facing the limiting ring is matched with the arc-shaped surface of the limiting ring.
Optionally, the shape of the side of the support ring facing the snap ring is adapted to the shape of the indentation.
Optionally, the method further comprises:
and the annular groove is arranged on the side wall of the piston rod, the position of the annular groove corresponds to the axial position of the ring groove, and the opening size of the annular groove is matched with the thickness of the edge of the ring groove.
Optionally, the shape of the portion of the snap ring that contacts the ring groove in the locked state is adapted to the concave shape of the ring groove.
The invention has at least the following beneficial technical effects:
according to the main force bearing structure of the bearing support rod device, the clamping ring is supported through the support bushing on the piston rod during locking, so that the clamping ring extends circumferentially, and the clamping ring is clamped among the first ring groove of the end cover, the limiting ring of the piston rod and the notch of the support bushing, so that the piston rod is connected with the end cover; this kind of connection structure can satisfy high bearing requirement.
Drawings
FIG. 1 is a general schematic view of the main bearing structure of the load-bearing brace rod device of the present invention;
FIG. 2 is a schematic view of the locked state of part A of FIG. 1;
fig. 3 is a schematic view of a portion a of fig. 1 in an unlocked state.
Wherein:
1-a piston rod; 2-a support bush; 3-a snap ring; 4-a support ring; 5-end cover; 6-a first ring groove; 7-notch; 8-a limit ring; 9-a pin shaft; 10-mounting holes; 11-second ring groove.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. 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. 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. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the 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 therefore, should not be taken as limiting the scope of the present invention.
The present invention will be described in further detail with reference to fig. 1 to 3.
As shown in fig. 1 to 3, the main force-bearing structure of the load-bearing brace rod device provided by the invention may include a piston rod 1, a support bush 2, a snap ring 3 and an end cover 5.
Specifically, one end of the end cap 5 is of a sleeve structure, a first ring groove 6 is formed in the inner wall of the sleeve structure, and the other end of the sleeve structure is connected with an external device.
One end of the piston rod 1 is arranged in a sleeve structure of the end cover 5, a limiting ring 8 is arranged at one end of the piston rod 1, which is positioned in the end cover 5, at least part of the limiting ring 8 is arranged in the first annular groove 6, and the shape of the part of the limiting ring 8, which is in contact with the notch 7, is matched with the shape of the notch 7, so that the limiting ring 8 can clamp the snap ring 3 in a locking state; the other end of the piston rod 1 is connected to an external device.
The support bush 2 is sleeved on the piston rod 1, the pin shaft 9 is vertically arranged on the side wall, facing the piston rod 1, of the support bush 2, the mounting hole 10 is formed in the side wall of the piston rod 1, the mounting hole 10 and the pin shaft 9 comprise at least 2, the pin shaft 9 is arranged in the mounting hole 10 along the circumferential symmetric distribution of the piston rod 1, and the diameter of the mounting hole 10 is larger than that of the pin shaft 9, so that the support bush 2 can move axially relative to the piston rod 1. A notch 7 is formed in one end, close to the limiting ring 8, of the supporting bushing 2, and the edge, facing the limiting ring 8, of the bottom surface of the notch 7 is in a smooth arc shape; when the support bush 2 moves in the direction of the limit ring 8, the snap ring 3 can be pressed against the notch 7.
The snap ring 3 is sleeved on the sleeve stopper rod 1 and located between the support bushing 2 and the limiting ring 8, and when the snap ring 3 is extruded to the notch 7, the snap ring 3 is clamped by the first ring groove 6, the limiting ring 8 and the notch 7, so that the piston rod 1 is connected with the end cover 5.
The main bearing structure of the bearing support rod device has locking action and unlocking action:
when the main bearing structure of the bearing support rod device is locked, the support bush 2 moves towards the direction of the limiting ring 8, the clamping ring 3 is extruded onto the notch 7, and the notch 7, the limiting ring 8 and the first ring groove 6 clamp the clamping ring 3, so that the axial movement of the clamping ring 3 is limited, and the piston rod 1 is ensured to be stably connected with the end cover 5;
in the locked state, the main bearing structure of the bearing support rod device is stressed as shown by force F in figure 1, and the snap ring 3 can keep the locked state after being stressed.
When the main force bearing structure of the bearing support rod device is unlocked, the support bush 2 moves towards the direction far away from the limit ring 8, the clamp ring 3 is separated from the notch 7, and the state before locking is recovered.
Further, the main bearing structure of the load-bearing brace rod device of the invention can also comprise:
the support ring 4 is sleeved on the piston rod 1 and is positioned between the clamping ring 3 and the limiting ring 8, and the support ring 4 is arranged to reduce the processing difficulty during processing and improve the precision of the combination of all components.
When the support ring 4 is arranged, the shape of one surface of the support ring 4 facing the clamp ring 3) is matched with that of the notch 7; and, the one side of spacing ring 8 towards support ring 4 sets up to smooth arcwall face, and support ring 4 makes spacing ring 8 atress dispersion, difficult production deformation towards the one side of spacing ring 8 and spacing ring 8's arcwall face looks adaptation, the design of arcwall face.
Furthermore, the main bearing structure of the bearing support rod device of the invention can also comprise:
second annular groove 11 sets up on the lateral wall of piston rod 1, and 11 axial position of second annular groove are corresponding with the axial position of first annular groove 6, and 11 opening sizes of second annular groove and the border thickness looks adaptation of first annular groove 6 can make when installing snap ring 3 etc. more convenient.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A main bearing structure for bearing a support rod device is characterized by comprising:
a limiting ring (8) is arranged at one end part of the piston rod (1);
the supporting bushing (2) is sleeved on the piston rod (1) in a sliding mode along the axial direction of the piston rod (1), and a notch (7) is formed in one end, close to the limiting ring (8), of the supporting bushing (2);
the clamping ring (3) is sleeved on the piston rod (1) and is positioned between the support bushing (2) and the limiting ring (8);
one end of the end cover (5) is of a sleeve structure, an annular groove (6) is formed in the inner wall of the sleeve structure, and at least part of the limiting ring (8) is arranged in the annular groove (6); wherein
When the main bearing structure of the bearing support rod device is locked, the support bushing (2) moves towards the direction of the limiting ring (8) to extrude the clamping ring (3) onto the notch (7), and the notch (7), the limiting ring (8) and the ring groove (6) clamp the clamping ring (3), so that the axial movement of the clamping ring (3) is limited;
when the main force bearing structure of the bearing support rod device is unlocked, the support bushing (2) moves in the direction away from the limiting ring (8), the clamping ring (3) is separated from the notch (7), and the state before locking is recovered.
2. The main force-bearing structure of a load-bearing support rod device according to claim 1, wherein a pin is vertically disposed on a surface of the support bush (2) facing the piston rod (1), a mounting hole is disposed on a side wall of the piston rod (1), and the pin is mounted in the mounting hole, and the diameter of the mounting hole is greater than that of the pin.
3. The main force-bearing structure of a load-bearing support rod device according to claim 2, wherein the number of the mounting holes and the number of the pin shafts are at least 2, and the mounting holes and the pin shafts are symmetrically distributed along the circumferential direction of the piston rod (1).
4. The main force-bearing structure of a load-bearing brace rod device as claimed in claim 1, characterized in that the edges of the bottom surface of the notch (7) are smoothly curved.
5. The main force-bearing structure of a load-bearing brace rod device as claimed in claim 1, wherein the shape of the surface of the limiting ring (8) contacting the ring groove (6) is matched with the shape of the ring groove (6).
6. The primary load-bearing structure of load-bearing brace apparatus of claim 1 further comprising:
the support ring (4) is sleeved on the piston rod (1) and is positioned between the clamping ring (3) and the limiting ring (8).
7. The main force-bearing structure of a device for supporting a supporting rod according to claim 6, characterized in that the surface of the limiting ring (8) facing the supporting ring (4) is provided with a smooth arc-shaped surface, and the surface of the supporting ring (4) facing the limiting ring (8) is matched with the arc-shaped surface of the limiting ring (8).
8. The main force-bearing structure of a load-bearing stay device as claimed in claim 6, characterized in that the shape of the face of the support ring (4) facing the snap ring (3) is adapted to the shape of the notch (7).
9. The primary load-bearing structure of load-bearing brace apparatus of claim 1 further comprising:
annular groove (11), set up on the lateral wall of piston rod (1), the position of annular groove (11) with the axial position of annular groove (6) is corresponding, the opening size of annular groove (11) with the border thickness looks adaptation of annular groove (6).
10. The main force-bearing structure of a load-bearing brace rod device as recited in claim 1, characterized in that the shape of the part of the snap ring (3) which is contacted with the ring groove (6) in the locked state is matched with the concave shape of the ring groove (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973987.3A CN109110109B (en) | 2018-08-24 | 2018-08-24 | Main bearing structure of bearing support rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973987.3A CN109110109B (en) | 2018-08-24 | 2018-08-24 | Main bearing structure of bearing support rod device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109110109A CN109110109A (en) | 2019-01-01 |
| CN109110109B true CN109110109B (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810973987.3A Active CN109110109B (en) | 2018-08-24 | 2018-08-24 | Main bearing structure of bearing support rod device |
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| Country | Link |
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| CN (1) | CN109110109B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3180234A (en) * | 1963-07-25 | 1965-04-27 | Jarry Hydraulics Ltd | Dual-position lockable actuator |
| CN104354854A (en) * | 2014-10-29 | 2015-02-18 | 中航飞机起落架有限责任公司 | Multifunctional undercarriage jackstay device |
| CN104627356A (en) * | 2015-02-12 | 2015-05-20 | 中航飞机起落架有限责任公司 | Actuator cylinder for folding stay bar and folding stay bar structure |
| CN204776004U (en) * | 2015-05-21 | 2015-11-18 | 成都飞机工业（集团）有限责任公司 | Undercarriage pressurized strut targets in place and locks and release mechanism |
| CN108216589A (en) * | 2017-12-15 | 2018-06-29 | 中国航空工业集团公司成都飞机设计研究所 | A kind of undercarriage leg contracting mechanism |
-
2018
- 2018-08-24 CN CN201810973987.3A patent/CN109110109B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3180234A (en) * | 1963-07-25 | 1965-04-27 | Jarry Hydraulics Ltd | Dual-position lockable actuator |
| CN104354854A (en) * | 2014-10-29 | 2015-02-18 | 中航飞机起落架有限责任公司 | Multifunctional undercarriage jackstay device |
| CN104627356A (en) * | 2015-02-12 | 2015-05-20 | 中航飞机起落架有限责任公司 | Actuator cylinder for folding stay bar and folding stay bar structure |
| CN204776004U (en) * | 2015-05-21 | 2015-11-18 | 成都飞机工业（集团）有限责任公司 | Undercarriage pressurized strut targets in place and locks and release mechanism |
| CN108216589A (en) * | 2017-12-15 | 2018-06-29 | 中国航空工业集团公司成都飞机设计研究所 | A kind of undercarriage leg contracting mechanism |
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| Publication number | Publication date |
|---|---|
| CN109110109A (en) | 2019-01-01 |
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