CN113864310B - Fuse type pin locking and radial clearance eliminating device - Google Patents
Fuse type pin locking and radial clearance eliminating device Download PDFInfo
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- CN113864310B CN113864310B CN202110994550.XA CN202110994550A CN113864310B CN 113864310 B CN113864310 B CN 113864310B CN 202110994550 A CN202110994550 A CN 202110994550A CN 113864310 B CN113864310 B CN 113864310B
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- 239000002184 metal Substances 0.000 claims abstract description 91
- 230000008030 elimination Effects 0.000 claims abstract description 20
- 238000003379 elimination reaction Methods 0.000 claims abstract description 20
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims 1
- 239000000956 alloy Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 230000007246 mechanism Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/02—Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings
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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
- F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
- F16B1/02—Means for securing elements of mechanisms after operation
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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
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/77—Use of a shape-memory material
Abstract
The invention provides a fusing type pin locking and radial clearance eliminating device which comprises a pin body, clearance eliminating blocks, wedge blocks, a pressure spring, a reset metal wire, a fusing metal wire, a reset lead, a fusing lead and a terminal, wherein the clearance eliminating device is integrally arranged in a pin hole formed by a connecting piece and a base body together, a guide shaft of the pin body penetrates through an equal-diameter cylindrical hole formed by a plurality of wedge blocks together, the outer surfaces of the wedge blocks form a continuous conical curved surface, the positions of the wedge blocks are adjusted by the fusing alloy wire, the pressure spring and the reset alloy wire together, the clearance eliminating blocks are arranged on the outer side of the wedge blocks and correspond to the number of the wedge blocks, the outer surfaces of the clearance eliminating blocks form a continuous equal-diameter cylindrical surface in a non-clearance eliminating state, the outer surface of each clearance eliminating block is in contact with the inner wall of the pin hole in the clearance eliminating state, and sufficient mutual acting force exists between the clearance eliminating blocks and the inner wall of the pin hole. The invention has the characteristics of reliable gap elimination, convenient disassembly, simple structure, small volume, flexible driving, quick actuation, low energy consumption and strong environment adaptability.
Description
Technical Field
The invention relates to a fusing type pin locking and radial clearance eliminating device, and belongs to the technical field of aerospace.
Background
With the development of aerospace technology, the requirement of space application on the rigidity of an aerospace mechanism is gradually improved. The pin connection is one of the most common connection modes for space application, and the radial clearance between the pin and the pin hole can obviously influence the overall rigidity and fundamental frequency of the structure, even cause the generation of high-frequency vibration, so that the aerospace mechanism generates vibration and seriously influences the anti-interference capability of the aerospace mechanism. In order to ensure the reliability and stability of the aerospace structure which is larger, higher-speed and has deformation requirements, the pin connection needs to meet the following three points: a small amount of gaps exist in the action process of the mechanism, and the smooth action of the whole structure cannot be interfered; after the action is finished, the radial clearance can be eliminated in time, and the rigidity of the connecting part is improved; can be smoothly disassembled when needing to be disassembled, and is convenient for partially replacing parts.
Disclosure of Invention
The invention aims to solve the technical problems of aerospace mechanism pin connection in the background art, provides a fusing pin locking and radial clearance eliminating device, belongs to an active clearance eliminating device, and has the advantages of simple structure, small volume, flexible driving, quick actuation, low energy consumption and strong environment adaptability, thereby meeting the space application requirements.
The invention provides a fusing pin locking and radial clearance eliminating device which is integrally arranged in a pin hole formed by a connected piece and a base body, and comprises a pin body, a pressure spring, n clearance eliminating blocks, n wedges, n/2 reset metal wires, n/2 fusing metal wires, n/2 groups of reset conducting wires and n/2 groups of fusing conducting wires (or n reset metal wires, n fusing metal wires, n groups of reset conducting wires and n groups of fusing conducting wires), wherein n is an even number larger than or equal to 2, the pressure spring is wound on the periphery of the rear part of the n wedges, the n wedges are connected with n/2 or n reset metal wires and fusing metal wires, the reset metal wires are connected with the reset conducting wires, the fusing metal wires are connected with the fusing conducting wires, the position of each wedge block is regulated by the fusing metal wires, the pressure spring and the reset metal wires, each clearance eliminating block is arranged on the outer side of the wedge block, the outer surfaces of the pin holes form a cylindrical surface with a continuous clearance eliminating block, and the acting forces exist between the clearance eliminating blocks under the condition that the clearance eliminating blocks are in an un-eliminated state.
Preferably, the pin body is of an integrally formed structure, one end of the pin body is a cone-cylinder combination, the middle of the pin body is a thin guide shaft, the other end of the pin body is a thick constant-diameter cylinder shaft, and the wedge blocks are installed on the guide shaft and are separated by sliding rail protrusions on the guide shaft.
Preferably, the large end face of the anti-backlash block is matched with the cylindrical end face of the combined body, the small end face of the anti-backlash block is matched with the end face of the cylindrical shaft, the conical surface of the anti-backlash block is matched with the conical surface of the wedge block, a circular groove matched with the pressure spring and a plurality of groups of through holes which are uniformly distributed in the circumferential direction are formed in the end face of the cylindrical shaft close to one side of the guide shaft, and the number of the groups corresponds to the number of the wedge blocks and is used for arranging the fusing metal wires and the resetting metal wires.
Preferably, the large end face of the wedge block is provided with an arc-shaped groove, a plurality of grooves can form a complete circular groove, the circular groove is matched with the pressure spring, the large end face of the wedge block is provided with an ear-shaped bulge, the bulge is provided with two through holes, and the axial positions of the through holes correspond to the axial positions of the through holes in the end face of the cylindrical shaft and are used for arranging the fusing metal wire and the reset metal wire.
Preferably, each set of through holes on the end surface of the cylindrical shaft comprises two holes distributed along the radial direction, wherein one hole is close to the guide shaft, the other hole is far from the guide shaft, optionally, one hole penetrates through the fusing metal wire, and the other hole penetrates through the reset metal wire, but all holes penetrated by one metal wire are close to the guide shaft or far from the guide shaft.
Preferably, the fusing metal wire sequentially passes through a through hole close to the guide shaft on the end face of the cylindrical shaft, a through hole opposite to the position of the fusing metal wire on the wedge block, a through hole close to the guide shaft on the adjacent wedge block and a through hole corresponding to the position of the fusing metal wire on the end face of the cylindrical shaft; the reset metal wire sequentially passes through the through hole far away from the guide shaft on the end face of the cylindrical shaft, the through hole opposite to the guide shaft on the wedge block, the through hole far away from the guide shaft on the adjacent wedge block and the through hole corresponding to the guide shaft on the end face of the cylindrical shaft, and the positions of the two metal wires can be exchanged.
Preferably, the terminals connect the ends of the reset wire and the ends of the fusing wire and the fusing wire together by crimping, respectively, at the end surface of the cylindrical shaft away from the guide shaft, and fix the positions of the reset wire and the fusing wire by the terminal end surface.
Preferably, the fusing metal wire is provided with a pretightening force, the pretightening force is converted into a pulling force of the wedge block, so that a pressure spring arranged between the wedge block and the cylindrical shaft is in a compressed state, and the reset metal wire is in a slightly relaxed state.
Preferably, the reset wire is a shape memory alloy.
Preferably, the positions through which the reset wire and the fusing wire pass are both subjected to insulation treatment.
The fusing type pin locking and radial clearance eliminating device has the beneficial effects that:
1. the fusing pin locking and radial clearance eliminating device can effectively eliminate the radial clearance of the hole shaft and improve the integral rigidity and the anti-interference capability of the aerospace structure.
2. The fusing type pin locking and radial clearance eliminating device has the advantages of simple and compact structure, low manufacturing cost, basically no difference between the appearance and the traditional pin body, no redundancy and capability of being used as a serialized standard component.
3. Compared with the traditional passive clearance eliminating device, the fusing pin locking and radial clearance eliminating device is not easy to generate the problems of interference on the motion of the original mechanism or incomplete clearance elimination, and greatly improves the reliability and stability of the whole system.
4. The pre-tightening force releasing process of the fusing pin locking and radial clearance eliminating device disclosed by the invention depends on the self heat-generating corrosion of the metal wire, the energy input is small, the fusing can be quickly realized, the actuating time is short, and the response speed is high.
5. Compared with other clearance eliminating devices, the fuse-type pin locking and radial clearance eliminating device is easy to disassemble, can realize smooth disassembly without other auxiliary structures or tools, replaces parts and reduces cost.
6. The fusing pin locking and radial clearance eliminating device provided by the invention has the advantages that after clearance elimination is realized, the metal wire is left in the device, and the interference of redundant materials and the space environment pollution cannot be caused.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of a clearance state structure of a fuse pin locking and radial clearance elimination apparatus according to the present invention;
FIG. 2 is a schematic structural view of a fuse pin locking and radial clearance elimination apparatus according to the present invention in an installed state;
FIG. 3 is a schematic structural view of a fuse pin locking and radial clearance elimination apparatus of the present invention in a clearance elimination state;
FIG. 4 is a schematic view of a break-away pin locking and radial gap elimination apparatus anti-backlash disassembly arrangement in accordance with the present invention;
FIG. 5 is a pin body through hole layout view of a fuse pin locking and radial clearance elimination apparatus of the present invention;
description of reference numerals: 1-connected piece, 2-pin body, 201-cone-cylinder assembly, 202-guide shaft, 203-cylinder shaft, 204-through hole group, 3-anti-backlash block, 4-base body, 5-wedge block, lug-shaped projection 501,6-pressure spring, 7-reset wire, 8-fuse wire, 9-reset lead, 10-fuse lead and 11-terminal.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
the first embodiment is as follows: this embodiment is described with reference to fig. 1 to 5. The fusing pin locking and radial clearance eliminating device comprises a pin body 2, a pressure spring 6, n clearance eliminating blocks 3, n wedges 5, n/2 or n reset metal wires 7, n/2 fusing metal wires 8, n/2 groups of reset lead wires 9, n/2 groups of fusing lead wires 10 (or n reset metal wires 7, n fusing metal wires 8, n groups of reset lead wires 9 and n groups of fusing lead wires 10), wherein n is an even number which is not less than 2, the peripheries of the rear parts of the n wedges 5 are wound with 6,n which are connected with the n reset metal wires 7 or the n fusing metal wires 7 and the fusing metal wires 8, the resetting metal wires 7 are connected with the reset lead wires 9, the fusing metal wires 8 are connected with the lead wires 10, the position of each wedge 5 is adjusted by the pressure spring 536, the fusing metal wires 7 and the fusing metal wires 8, the fusing metal wires 7 and the fusing metal wires 8 are in a state of being in which the clearance eliminating blocks are not contacted with each other, and the clearance eliminating blocks exist in a state under the condition that the outer surface of the fusing metal wires 3 and the clearance eliminating blocks are not contacted with each other, and the clearance eliminating blocks.
In this embodiment, 4 anti-backlash blocks 3, 4 wedge blocks 5, 2 reset wires 7, 2 fuse wires 8, 2 groups of reset wires 9 and 2 groups of fuse wires 10 are designed, 4 anti-backlash blocks 3, 4 wedge blocks 5, 4 fuse wires 7, 4 fuse wires 8, 4 groups of reset wires 9 and 4 groups of fuse wires 10 are also designed, that is, the number of the reset wires 7 and the fuse wires 8 can correspond to the number of the wedge blocks 5, and can be half of the number of the wedge blocks 5. The number of wedges 5 is preferably four or six.
The pin body 2 is of an integrally formed structure, one end of the pin body 2 is a conical-cylindrical assembly 201, the middle of the pin body is a thin guide shaft 202, the other end of the pin body is a thick constant-diameter cylindrical shaft 203, the guide shaft 202 penetrates through constant-diameter cylindrical holes jointly formed by four wedge blocks 5, the four wedge blocks 5 are installed on the guide shaft 2-2 and are separated by sliding rail protrusions on the guide shaft 202, the outer surfaces of the four wedge blocks form a continuous conical curved surface, the positions of the wedge blocks 5 are jointly adjusted by a pressure spring 6, a reset metal wire 7 and a fusing metal wire 8, the four anti-backlash blocks 3 are installed on the outer side of the wedge blocks 5, the large end faces of the anti-backlash blocks are matched with the cylindrical end faces of the assembly 201, the small end faces of the anti-backlash blocks are matched with the end faces of the cylindrical shaft 203, the conical faces of the anti-backlash blocks are matched with the conical faces of the wedge blocks 5, and the outer surfaces of the anti-backlash blocks form a continuous cylindrical surface.
The large end face of the anti-backlash block 3 is matched with the cylindrical end face of the combined body 201, the small end face of the anti-backlash block is matched with the end face of the cylindrical shaft 203, the conical surface of the anti-backlash block is matched with the conical surface of the wedge block 5, a circular groove matched with the pressure spring 6 and a plurality of groups of through holes 204 which are uniformly distributed along the circumferential direction are arranged on the end face of the cylindrical shaft 203 close to one side of the guide shaft 202, and the number of the groups corresponds to the number of the wedge blocks 5 and is used for arranging the fusing metal wires 8 and the resetting metal wires 7.
Circular arc-shaped grooves are formed in the large ends of the four wedge blocks 5, the four grooves can form a complete circular groove, circular grooves with equal diameters and equal widths are also formed in the end face of the cylindrical shaft 203, and the pressure spring 6 is installed between the two grooves. Meanwhile, the big end face of the wedge 5 is provided with an ear-shaped bulge 501, the bulge 501 is provided with two through holes, and the axial positions of the through holes correspond to the axial positions of the through holes 204 on the end face of the cylindrical shaft 203 and are used for arranging the fusing metal wire 8 and the reset metal wire 7.
Each set of through holes 204 on the end face of the cylindrical shaft 203 comprises two holes distributed radially, one near the guide shaft 202 and one far from the guide shaft 202, optionally one hole passing through the fuse wire 8 and the other hole passing through the reset wire 7, but it is required to ensure that all holes through which one wire passes are near the guide shaft 202 or far from the guide shaft 202.
Four groups of through holes 204 are formed in the end face of the cylindrical shaft 203 of the pin body 2, each group of through holes comprises two holes distributed along the radial direction, the through hole close to the guide shaft 202 is used for penetrating the fusing metal wire 8, the through hole far away from the guide shaft 202 is used for penetrating the resetting metal wire 7, the four groups of through holes are uniformly distributed along the circumferential direction, an ear-shaped protrusion 501 is arranged on the large end face of the wedge block 5, two through holes are formed in the protrusion 501, the axial line positions of the through holes correspond to the axial line positions of the through holes 204 in the end face of the cylindrical shaft 203 one by one, similarly, the through hole close to the guide shaft 202 is used for penetrating the fusing metal wire 8, and the through hole far away from the guide shaft 202 is used for penetrating the resetting metal wire 7.
One fusing metal wire 8 sequentially passes through a through hole close to the guide shaft 202 on the end face of the cylindrical shaft 203, a through hole opposite to the position of the through hole on the protrusion 501 of the wedge 5, a through hole close to the guide shaft 202 on the protrusion 501 of the adjacent wedge 5 and a through hole corresponding to the position of the through hole on the end face of the cylindrical shaft 203, and the other fusing metal wire 8 passes through the through holes at the symmetrical positions in the same sequence, at the end face of the cylindrical shaft 203 far away from the guide shaft 202, four terminals 11 connect two groups of fusing conducting wires 10 and the tail ends of the two fusing metal wires 8 together in a compression joint mode and fix the positions of the two fusing metal wires 8, at the moment, the fusing metal wire 8 has larger pretightening force which is converted into the tension force of the wedge 5, so that a pressure spring 6 arranged between the wedge 5 and the cylindrical shaft 203 is in a compressed state, and a reset metal wire 7 is in a slightly relaxed state.
One reset metal wire 7 sequentially passes through a through hole far away from the guide shaft 202 on the end surface of the cylindrical shaft 203, a through hole opposite to the wedge 5 on the protrusion 501 of the wedge 5, a through hole far away from the guide shaft 202 on the protrusion 501 of the adjacent wedge 5 and a through hole corresponding to the position on the end surface of the cylindrical shaft 203, the other reset metal wire 8 sequentially passes through the through holes at the symmetrical positions, and at the end surface of the cylindrical shaft 203 far away from the guide shaft 202, the four terminals 11 connect the two groups of reset conducting wires 9 and the tail ends of the two reset metal wires 7 together in a crimping mode and fix the positions of the two reset metal wires 7, and at the moment, the reset metal wires 7 are in a slightly loose state. The positions of the two metal wires can be exchanged.
The reset metal wire 7 is made of a shape memory alloy material, the reset metal wire 7 and the fusing metal wire 8 are subjected to insulation treatment through positions, insulating paint can be coated, and the short circuit phenomenon is avoided.
The working principle of the fusing type pin locking and radial clearance eliminating device is as follows:
in the installation state, the fusing metal wire 8 sequentially passes through a through hole close to the guide shaft 202 on the end face of the cylindrical shaft 203, a through hole opposite to the through hole on the wedge 5, a through hole close to the guide shaft 202 on the protrusion of the adjacent wedge 5 and a through hole corresponding to the through hole on the end face of the cylindrical shaft 203, the resetting metal wire 7 sequentially passes through a through hole far away from the guide shaft 202 on the end face of the cylindrical shaft 203, a through hole opposite to the through hole on the wedge 5, a through hole far away from the guide shaft 202 on the protrusion of the adjacent wedge 5 and a through hole corresponding to the through hole on the end face of the cylindrical shaft 203, the pretightening force is applied by stretching the fusing metal wire 8 and is converted into a pulling force of the fusing metal wire 8 on the wedge 5, the pulling force overcomes the elasticity of the compression spring 6 to enable the wedge 5 to move towards the large end direction of the wedge 5 along the axial direction, the position of the wedge 5 cannot interfere with the anti-backlash block 3 of the outer ring to form a continuous equal-diameter cylindrical surface, the gap between the pin hole is ensured, the installation is convenient, then the positions of the fusing metal wire 8 and the resetting metal wire 7 are fixed by fusing by the terminal 11 on the end face of the cylindrical shaft 203, and the resetting metal wire 7 is in a slight loose state.
When the system sends a clearance eliminating instruction, the fusing lead wires 10 are electrified, a plurality of groups of fusing lead wires 10 are connected in parallel, the fusing metal wires 8 are rapidly fused under the action of current, the pretightening force is released instantly, the wedge block 5 moves towards the small end direction of the wedge block along the axial direction under the action of the elastic force of the pressure spring 6, and the wedge block 5 pushes the clearance eliminating block 3 to move outwards along the radial direction until the clearance between the pin and the pin hole is completely eliminated.
When the wedge block needs to be disassembled, the reset leads 9 are electrified, the multiple groups of reset leads 9 are connected in parallel, the reset metal wires 7 are made of shape memory alloy wires, the shape memory alloy has the characteristic of thermal contraction, the temperature of the shape memory alloy wires is continuously increased under the action of current, the contraction is shortened, the pulling force of the reset metal wires 7 on the wedge block 5 overcomes the elastic force of the pressure spring 6 to enable the wedge block 5 to move towards the direction of the large end of the shape memory alloy wires along the axial direction, the pushing force of the wedge block 5 on the anti-backlash block 3 disappears, the gap reappears, and the pin can be smoothly disassembled from the pin hole.
The fuse-type pin locking and radial clearance eliminating device can be designed in series according to the size of a cylindrical pin standard part, is small in size and light in weight, and can be applied to various aerospace application occasions such as guided missiles, folding and unfolding mechanisms and the like.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fuse pin locking and radial clearance eliminating device is characterized in that the fuse pin locking and radial clearance eliminating device is integrally installed in a pin hole formed by a connecting piece (1) and a base body (4) together, the fuse pin locking and radial clearance eliminating device comprises a pin body (2), a pressure spring (6), n clearance eliminating blocks (3), n wedges (5), n/2 reset metal wires (7), n/2 fuse metal wires (8), n/2 groups of reset leads (9), n/2 groups of fuse leads (10) or n reset metal wires (7), n fuse metal wires (8), n groups of reset leads (9) and n groups of fuse leads (10), wherein n is an even number larger than or equal to 2,
the rear part peripheries of the n wedges (5) are wound with compression springs (6), the n wedges (5) are connected with n/2 or n reset metal wires (7) and fusing metal wires (8), the reset metal wires (7) are connected with reset wires (9), the fusing metal wires (8) are connected with fusing wires (10), the position of each wedge (5) is jointly adjusted by the fusing metal wires (8), the compression springs (6) and the reset metal wires (7), each anti-backlash block (3) is installed on the outer side of each wedge (5), the outer surfaces of the anti-backlash blocks (3) form continuous equal-diameter cylindrical surfaces in an un-backlash state, the outer surface of each anti-backlash block (3) is in contact with the inner wall of a pin hole in the backlash state, and interaction force exists between the anti-backlash blocks and the pin holes.
2. The fusible pin locking and radial clearance elimination device according to claim 1, wherein the pin body (2) is an integrally formed structure, one end of the pin body is a conical-cylindrical combination (201), the middle of the pin body is a guide shaft (202) thinner than the conical-cylindrical combination (201), the other end of the pin body is a cylindrical shaft (203) with the same diameter as the thick end of the conical-cylindrical combination (201), and a plurality of wedges (5) are mounted on the guide shaft (202) and are separated by sliding rail protrusions on the guide shaft (202).
3. The fuse pin locking and radial clearance elimination device according to claim 2, characterized in that the large end face of the clearance elimination block (3) is fitted with the cylindrical end face of the cone-cylinder combination (201), the small end face is fitted with the end face of the cylinder shaft (203), the conical surface of the clearance elimination block is fitted with the conical surface of the wedge (5), the end face of the cylinder shaft (203) on the side close to the guide shaft (202) is provided with a circular groove fitted with the compression spring (6) and a plurality of groups of through holes (204) uniformly distributed along the circumferential direction, the number of the groups corresponds to the number of the wedge (5), and the through holes are used for arranging the fusing metal wire (8) and the reset metal wire (7).
4. The fusible pin locking and radial gap elimination device according to claim 2, wherein the large end face of the wedge (5) is provided with an arc-shaped groove, a plurality of grooves can form a complete circular groove, the circular groove is matched with the pressure spring (6), the large end face of the wedge (5) is provided with an ear-shaped protrusion (501), the protrusion (501) is provided with two through holes, and the axial positions of the through holes correspond to the axial positions of the through holes (204) on the end face of the cylindrical shaft (203) and are used for arranging the fusing wire (8) and the reset wire (7).
5. The fusible pin locking and radial clearance elimination device according to claim 2, wherein each set of through holes (204) on the end surface of the cylindrical shaft (203) comprises two holes distributed radially, one near the guide shaft (202) and one far from the guide shaft (202), optionally one hole passing through the fusible wire (8) and the other hole passing through the return wire (7), but it is ensured that all holes through which one wire passes are near the guide shaft (202) or far from the guide shaft (202).
6. The fusible pin locking and radial clearance elimination device according to claim 2, wherein the fusible wire (8) passes through a through hole in the end face of the cylindrical shaft (203) near the guide shaft (202), a through hole in the wedge (5) opposite to the position thereof, a through hole in the adjacent wedge (5) near the guide shaft (202), and a through hole in the end face of the cylindrical shaft (203) corresponding to the position thereof in this order; the reset metal wire (7) sequentially passes through a through hole on the end face of the cylindrical shaft (203) far away from the guide shaft (202), a through hole on the wedge block (5) opposite to the guide shaft, a through hole on the adjacent wedge block (5) far away from the guide shaft (202) and a through hole on the end face of the cylindrical shaft (203) corresponding to the guide shaft, and the positions of the two metal wires can be exchanged.
7. The fusible pin locking and radial gap elimination device according to claim 2, wherein the terminal (11) connects ends of the reset wire (9) and the reset wire (7) and ends of the fuse wire (10) and the fuse wire (8) together by crimping at an end surface of the cylindrical shaft (203) away from the guide shaft (202), respectively, and fixes positions of the reset wire (7) and the fuse wire (8) by the end surface of the terminal (11).
8. The fuse pin locking and radial clearance elimination device according to claim 2, characterized in that the fuse wire (8) has a pre-tightening force that is converted into a pulling force of the wedge (5) so that a compression spring (6) installed between the wedge (5) and the cylindrical shaft (203) is in a compressed state and the return wire (7) is in a slightly relaxed state.
9. The fusible pin locking and radial gap elimination device of claim 1, wherein the return wire (7) is a shape memory alloy.
10. Fuse pin locking and radial gap elimination device according to claim 1, characterized in that the positions where the reset wire (7) and the fusing wire (8) pass are insulated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110994550.XA CN113864310B (en) | 2021-08-27 | 2021-08-27 | Fuse type pin locking and radial clearance eliminating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110994550.XA CN113864310B (en) | 2021-08-27 | 2021-08-27 | Fuse type pin locking and radial clearance eliminating device |
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| CN113864310A CN113864310A (en) | 2021-12-31 |
| CN113864310B true CN113864310B (en) | 2023-01-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10062537B1 (en) * | 2016-09-29 | 2018-08-28 | Glenair, Inc. | Redundant fuse wires in a hold-down release apparatus |
| CN108472756A (en) * | 2015-05-08 | 2018-08-31 | 泰雷兹阿莱尼亚宇航意大利单股东有限责任公司 | Non-explosivity relieving mechanism based on electromagnetic induction fusing |
| CN110173494A (en) * | 2019-06-11 | 2019-08-27 | 哈尔滨工业大学 | A kind of lock is fixed and radial clearance cancellation element |
| WO2020192261A1 (en) * | 2019-03-26 | 2020-10-01 | 石家庄铁道大学 | Steel pin capable of eliminating gaps |
| CN111946707A (en) * | 2020-06-28 | 2020-11-17 | 航天东方红卫星有限公司 | Split type memory alloy spring pin |
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| US8021069B2 (en) * | 2008-06-23 | 2011-09-20 | Space Systems/Loral, Inc. | Redundant radial release apparatus |
| US20100215424A1 (en) * | 2009-02-24 | 2010-08-26 | Hr Textron Inc. | Locking device with a shape memory alloy actuator and method of use |
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| CN108472756A (en) * | 2015-05-08 | 2018-08-31 | 泰雷兹阿莱尼亚宇航意大利单股东有限责任公司 | Non-explosivity relieving mechanism based on electromagnetic induction fusing |
| US10062537B1 (en) * | 2016-09-29 | 2018-08-28 | Glenair, Inc. | Redundant fuse wires in a hold-down release apparatus |
| WO2020192261A1 (en) * | 2019-03-26 | 2020-10-01 | 石家庄铁道大学 | Steel pin capable of eliminating gaps |
| CN110173494A (en) * | 2019-06-11 | 2019-08-27 | 哈尔滨工业大学 | A kind of lock is fixed and radial clearance cancellation element |
| CN111946707A (en) * | 2020-06-28 | 2020-11-17 | 航天东方红卫星有限公司 | Split type memory alloy spring pin |
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Address after: 150000 Room 411, building 1, China Cloud valley software park, No. 9, Songhua Road, haping road concentration area, economic development zone, Harbin, Heilongjiang Province Patentee after: Guochuang Robot Innovation Center (Harbin) Co.,Ltd. Patentee after: HARBIN INSTITUTE OF TECHNOLOGY Patentee after: BEIJING INSTITUTE OF ELECTRONIC SYSTEM ENGINEERING Address before: 150000 Room 411, building 1, Yungu Software Park, No. 9, Songhua Road, haping road concentration area, economic development zone, Harbin, Heilongjiang Province Patentee before: Harbin Institute of technology robot Innovation Center Co.,Ltd. Patentee before: HARBIN INSTITUTE OF TECHNOLOGY Patentee before: BEIJING INSTITUTE OF ELECTRONIC SYSTEM ENGINEERING |
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