CN114346957B - Memory alloy pin puller - Google Patents
Memory alloy pin puller Download PDFInfo
- Publication number
- CN114346957B CN114346957B CN202210158700.8A CN202210158700A CN114346957B CN 114346957 B CN114346957 B CN 114346957B CN 202210158700 A CN202210158700 A CN 202210158700A CN 114346957 B CN114346957 B CN 114346957B
- Authority
- CN
- China
- Prior art keywords
- memory alloy
- pin head
- locking block
- locking
- alloy wire
- 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.)
- Active
Links
Landscapes
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The application provides a memory alloy pin puller, comprising: the memory alloy inner core, the shell and the tail shell are fixed at the end part of the shell, and the memory alloy inner core is arranged in the shell along the length direction of the shell; the memory alloy inner core comprises a pin head, a reset mechanism, a limiting plate and a memory alloy wire telescopic mechanism; the limiting plate is limited at one end of the outer shell far away from the tail shell; the reset mechanism and the memory alloy wire telescopic mechanism are respectively arranged at two sides of the limiting plate; the outer periphery of the pin head is provided with a reset mechanism, one end of the reset mechanism is limited at the side end of the pin head, and the other end of the reset mechanism is limited at the side end of the limiting plate; one end of the memory alloy wire telescopic mechanism, which is close to the pin head, is connected with the pin head through a front locking bolt; the memory alloy wire telescopic mechanism stretches and contracts to drive the pin head to move towards the direction approaching or far away from the limiting plate. The application has simple and reliable structure, larger pin pulling force, more reliable pin pulling and convenient adjustment of the length of the memory alloy wire.
Description
Technical Field
The application relates to the technical field of pin extractors, in particular to a memory alloy pin extractor.
Background
At present, the pin puller plays a role in providing a power source in the separation process of the spacecraft, and the driving mode of the pin puller comprises modes of a motor, an initiating explosive device, a memory alloy and the like, wherein the memory alloy driving mode has the remarkable advantages of simple structure, small impact, reliable work and the like.
In the existing memory alloy pin puller, the memory alloy wire is generally thinner to facilitate over-bending due to the fact that the memory alloy wire needs to be wound between two connecting plates. However, thinner memory alloy wires provide limited tension and cannot provide greater pin pulling forces. And the lengths of a plurality of memory alloy wires in the pin puller cannot be accurately consistent due to the influence of the winding mode of the memory alloy wires, so that the position of the pin head is inaccurate, if the position of the pin head is too far forward, the situation of pin pulling failure can occur, the reliability of pin pulling is poor, and finally, the spacecraft separation failure is caused.
At present, memory alloy is used as a novel material and has two forms, namely a high-temperature form and a low-temperature form. When the temperature exceeds the phase change point, the memory alloy can be changed from a low-temperature form to a high-temperature form, and the shape change can be used for driving parts in the pin puller.
Therefore, how to provide a pin puller with simple and reliable structure, larger pin pulling force, more reliable pin pulling and convenient adjustment of the length of the memory alloy wire is a technical problem which still needs to be solved at present.
Disclosure of Invention
The application aims to provide a memory alloy pin puller, which adopts a mode of clamping two ends, and compared with the existing memory alloy pin puller, the memory alloy pin puller can use thicker memory alloy wires to provide larger pin pulling force; the memory alloy wire winding mode is canceled, the structure is simpler and more reliable, the length of the memory alloy wire can be conveniently adjusted during installation, and the pin pulling is more reliable.
In order to achieve the above object, the present application provides a memory alloy pin puller, comprising: the memory alloy inner core, the shell and the tail shell are fixed at the end part of the shell, and the memory alloy inner core is arranged in the shell along the length direction of the shell;
the memory alloy inner core comprises a pin head, a reset mechanism, a limiting plate and a memory alloy wire telescopic mechanism;
the limiting plate is limited at one end of the shell far away from the tail shell;
the reset mechanism and the memory alloy wire telescopic mechanism are respectively arranged at two sides of the limiting plate;
the reset mechanism is arranged on the periphery of the pin head, one end of the reset mechanism is limited at the side end of the pin head, and the other end of the reset mechanism is limited at the side end of the limiting plate;
one end of the memory alloy wire telescopic mechanism, which is close to the pin head, is connected with the pin head through a front locking bolt; the memory alloy wire telescopic mechanism stretches and contracts to drive the pin head to move towards the direction close to or far away from the limiting plate.
As above, the memory alloy wire telescoping mechanism comprises a front locking assembly, a rear locking assembly and a memory alloy wire;
the front locking assembly is connected with the pin head through a front locking bolt;
the rear locking component is fixed at one end of the outer shell, which is close to the tail shell;
one end of the memory alloy wire is connected to the front locking assembly, and the other end of the memory alloy wire is connected to the rear locking assembly.
As above, the front locking assembly comprises a front combination seat, an inner locking block, an outer locking block and a compression seat;
the front combined seat is inwards recessed with a groove at one side close to the pin head, and the outer locking block is arranged in the groove of the front combined seat;
the inner locking block is arranged on the inner side of the outer locking block;
the memory alloy wire is clamped and connected between the inner locking block and the outer locking block;
the inner locking block is provided with a first conical inclined surface;
the pressing seat is provided with a second conical inclined surface matched with the first conical inclined surface;
the compressing seat is arranged on one side of the front combined seat, and compresses the inner locking block through a second conical inclined surface, so that the memory alloy wire is compressed between the inner locking block and the outer locking block.
As above, wherein the front locking bolt passes through the front combination seat and the compression seat; one end of the front locking bolt is limited at the end part of the front combination seat; the other end is in threaded connection with the pin head; the end part of the pin head, which is close to the compressing seat, is abutted against the side part of the compressing seat so that the compressing seat compresses the inner locking block.
As above, wherein the rear locking assembly includes a rear locking block, a rear locking nut and a rear locking bolt;
the rear locking block is in locking connection with the memory alloy wire;
the rear locking bolt penetrates into the rear locking block;
the rear lock nut is in threaded connection with the rear lock bolt.
As above, the outer edge of the limiting plate is connected in the limiting groove in the shell in a matched mode; the limiting plate is provided with a square groove; the outer peripheral wall of the pin head, which is close to one end of the limiting plate, is square; the outer peripheral wall of the pin head is clamped into the square groove.
As above, the front locking assembly comprises a plurality of groups of inner locking blocks and outer locking blocks which are connected in a matched manner, and the inner locking blocks and the outer locking blocks which are connected in a matched manner are uniformly arranged at intervals along the circumferential direction of the front combination seat; and the memory alloy wires are connected between the inner locking blocks and the outer locking blocks which are connected in a matched manner.
As above, the inner locking block and the outer locking block are made of conductive metal.
As above, the outer edge of the outer locking block is provided with a semicircular groove for welding the electric wire.
As described above, the reset mechanism is a reset spring, the reset spring is sleeved on the outer peripheral side of the pin head, one end of the reset spring abuts against the side end of the pin head, and the other end abuts against the side end of the limiting plate.
The beneficial effects achieved by the application are as follows:
(1) According to the application, the memory alloy wire is installed in a manner of clamping two ends, so that thicker memory alloy wires can be used, and a larger pin pulling force is provided.
(2) The application can conveniently adjust the length of the memory alloy wire during installation, so that the position of the pin head is more precise, and the pin pulling is more reliable.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings to those skilled in the art.
Fig. 1 is a schematic structural view of a memory alloy pin puller according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a memory alloy core according to an embodiment of the present application.
Fig. 3 is a cross-sectional view of a memory alloy core according to an embodiment of the present application.
Fig. 4 is a schematic structural view of an inner lock block and an outer lock block according to an embodiment of the present application.
Fig. 5 is a top view of a front combination seat according to an embodiment of the present application.
Fig. 6 is a perspective view of a front combination seat according to an embodiment of the present application.
Fig. 7 is a schematic structural view of a limiting plate according to an embodiment of the application.
Fig. 8 is a schematic view of the pin head according to an embodiment of the present application.
Reference numerals: 1-a memory alloy core; 2-a housing; 3-tail shell; 101-pin heads; 102-a return spring; 103-limiting plates; 104-a front combination seat; 105-front locking bolt; 106-an inner locking block; 107-outer locking blocks; 108-a memory alloy wire; 109-rear locking block; 110-a rear lock nut; 111-rear lock bolts; 112-compressing the seat; 1011-baffle; 1012-square shaft; 1013-square clamping ends; 1031-a first limit splice plate; 1032-a second limit splice plate; 1033-square grooves; 1041-a memory alloy wire hole; 1042—a central aperture; 1043-arc clamping grooves; 1061-a first tapered ramp; 1062-a second circular arc slot; 1071-semicircular groove; 1072-first circular arc groove.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1 to 3, the present application provides a memory alloy pin puller which is fixed to an outer side of a pin hole along an axial direction of the pin hole, the memory alloy pin puller comprising: the memory alloy inner core 1, the shell 2 and the tail shell 3, wherein the tail shell 3 is fixedly connected to the end part of the shell 2, and the tail shell 3 is in threaded connection with the shell 2 or is connected through a fixing piece; the tail shell 3 can be conveniently detached from the shell 2, the interior of the shell 2 is hollow, the tail shell 3 is sealed at the tail end of the shell 2, and the memory alloy inner core 1 is arranged in the shell 2 and the tail shell 3 along the length direction of the shell 2; one end of the memory alloy inner core 1 is exposed out of the front end of the shell 2, and the other end is arranged inside the shell 2 or the tail shell 3.
As shown in fig. 1-3, the memory alloy inner core 1 comprises a pin head 101, a reset mechanism, a limiting plate 103 and a memory alloy wire telescopic mechanism; the limiting plate 103 is limited at one end of the shell 2 far away from the tail shell 3; the pin head 101 is provided at the front end of the housing 2 and protrudes from the housing 2; the reset mechanism and the memory alloy wire telescopic mechanism are respectively arranged at two sides of the limiting plate 103; the outer periphery of the pin head 101 is provided with a reset mechanism, one end of the reset mechanism is limited at the side end of the pin head 101, and the other end of the reset mechanism is limited at the side end of the limiting plate 103; one end of the memory alloy wire telescopic mechanism, which is close to the pin head 101, is connected with the pin head 101 through a front locking bolt 105; the memory alloy wire telescopic mechanism stretches and contracts to drive the pin head 101 to move towards or away from the limiting plate 103.
As a specific embodiment of the application, the pin pulling principle of the memory alloy pin puller is as follows: the memory alloy wire 108 in the memory alloy wire telescopic mechanism is electrified, the memory alloy wire 108 heats and shortens after the electrification, and the memory alloy wire 108 moves towards the inside of the shell 2 with the pin head 101, namely drives the pin head 101 to move out of the pin hole, so that the pin pulling action is realized. After the pin pulling action is completed, the reset mechanism drives the pin head 101 to restore to the original position.
As shown in fig. 2 and 3, the memory alloy wire telescoping mechanism includes a front locking assembly, a rear locking assembly, and a memory alloy wire 108. The front locking assembly is connected with the pin head 101 through a front locking bolt 105; the front locking assembly can move along the length direction of the shell 2 relative to the shell 2, and the rear locking assembly is fixed at one end of the shell 2 close to the tail shell 3; the rear locking assembly is integrally immovable relative to the housing 2 along the length of the housing 2, and the memory alloy wire 108 is connected at one end to the front locking assembly and at the other end to the rear locking assembly. The front locking assembly and the rear locking assembly achieve a clamped connection of the two ends of the memory alloy wire 108. The memory alloy wire 108 contracts to drive the front locking assembly to move in a direction approaching the rear locking assembly, so that the pin head 101 is driven to move in a direction approaching the rear locking assembly, namely, to move towards the inside of the housing 2.
As shown in fig. 3, 4 and 6, the front locking assembly includes a front combination seat 104, an inner locking block 106, an outer locking block 107 and a compression seat 112; the front combination seat 104 has a central hole 1042, and the front lock bolt 105 penetrates the central hole 1042 and is screwed with the pin head 101. The side of the front combination seat 104, which is close to the pin head 101, is inwards recessed with a groove, and an outer locking block 107 is arranged in the groove of the front combination seat 104; the inner lock block 106 is provided inside the outer lock block 107, i.e., on the side near the front lock bolt 105. The compressing seat 112 is sleeved on the outer peripheral side of the front locking bolt 105 and is limited between the pin head 101 and the inner locking block 106, and a first conical inclined surface 1061 is arranged on one side of the inner locking block 106 close to the compressing seat 112; the side of the pressing seat 112 near the inner locking block 106 is provided with a second conical inclined surface matched with the first conical inclined surface 1061; the second conical inclined surface presses on the first conical inclined surface 1061, and a memory alloy wire 108 is arranged between the inner locking block 106 and the outer locking block 107; the compressing seat 112 is disposed at one side of the front assembling seat 104, and the compressing seat 112 compresses the inner locking block 106 through the second conical inclined surface, so that the memory alloy wire 108 is compressed between the inner locking block 106 and the outer locking block 107.
Preferably, a threaded hole is provided in the end of the pin head 101 adjacent to the front combination seat 104, and the front lock bolt 105 penetrates through the central hole 1042 and is in threaded connection with the threaded hole of the pin head 101.
In the process of installing the memory alloy wire 108, the front locking bolt 105 is screwed into the pin head 101, so that the pin head 101 moves in the direction approaching the front combination seat 104, the side end of the pin head 101 further presses the pressing seat 112, the pressing seat 112 further presses the inner locking block 106, and the gap between the inner locking block 106 and the outer locking block 107 for accommodating the memory alloy wire 108 is reduced, so that the memory alloy wire 108 is pressed.
As shown in fig. 3, the front lock bolt 105 passes through the front combination seat 104 and the pressing seat 112; one end of the front locking bolt 105 is limited at the end of the front combination seat 104; the other end is in threaded connection with the pin head 101; the end of the pin head 101 near the pressing seat 112 abuts against the side of the pressing seat 112 so that the pressing seat 112 presses the inner lock block 106.
As shown in fig. 4, the inner locking block 106 has a second circular arc groove 1062, the outer locking block 107 has a first circular arc groove 1072, and after the inner locking block 106 and the outer locking block 107 are pressed together, the first circular arc groove 1072 and the second circular arc groove 1062 are spliced to form a circular groove for accommodating the memory alloy wire 108.
As shown in fig. 4, the inner locking block 106 and the outer locking block 107 are arc-shaped as a whole and are suitable for being installed in the front combination seat 104; the inner side and the outer side of the outer locking block 107 are arc-shaped; the inner side surface and the outer side surface of the inner locking block 106 are arc-shaped, the outer side surface of the inner locking block 106 is connected with the inner side surface of the outer locking block 107 in a matching way, the inner side surface of the inner locking block 106 is arc-shaped, the inner locking block is suitable for being mounted on the outer peripheral side of the front locking bolt 105, and a first conical inclined surface 1061 is obliquely arranged on the inner side edge of the inner locking block 106.
As shown in fig. 3, the rear locking assembly includes a rear locking block 109, a rear locking nut 110, and a rear locking bolt 111; the rear locking block 109 is in locking connection with the memory alloy wire 108; rear lock bolts 111 penetrate rear lock blocks 109; the rear lock nut 110 is threadedly coupled with the rear lock bolt 111.
Preferably, the rear locking block 109 comprises a rear combination seat, an inner locking block 106, an outer locking block 107 and a compressing seat 112, the rear combination seat has the same structure and size as the front combination seat 104, the inner locking block 106 and the outer locking block 107 are arranged in the rear combination seat, the outer locking block 107 is arranged in the rear combination seat, the inner locking block 106 is arranged at the inner side of the outer locking block 107, and the inner locking block 106, the outer locking block 107 and the compressing seat 112 of the rear locking assembly are the same as the inner locking block 106, the outer locking block 107 and the compressing seat 112 of the front locking assembly in structure, connection mode and working principle.
Preferably, the rear combination seat is provided with a through hole along the axial direction, the through hole is internally penetrated with a rear locking bolt 111, and one end of the rear locking bolt 111 extending into the rear combination seat is locked and connected through a rear locking nut 110.
As a specific embodiment of the application, a groove is formed inwards at one side of the rear combination seat far away from the front combination seat 104, an inner locking block 106 and an outer locking block 107 are arranged in the rear combination seat, the outer locking block 107 is arranged in the groove of the rear combination seat, the inner locking block 106 is arranged on the inner side of the outer locking block 107, and the inner locking block 106 and the outer locking block 107 are arranged on the outer side of the rear locking bolt 111; the side of the inner locking block 106 near the pressing seat 112 is provided with a first conical inclined surface 1061; the side of the pressing seat 112 near the inner locking block 106 is provided with a second conical inclined surface matched with the first conical inclined surface 1061; the second conical inclined surface presses on the first conical inclined surface 1061, and a memory alloy wire 108 is arranged between the inner locking block 106 and the outer locking block 107; a compressing seat 112 is arranged beside the inner locking block 106, and the limiting end of the rear locking bolt 111 compresses the compressing seat 112; so that the compression seat 112 compresses the inner locking block 106, and the memory alloy wire 108 is compressed between the inner locking block 106 and the outer locking block 107.
As a specific embodiment of the present application, the outer edge of the limiting plate 103 is connected in a limit groove inside the housing 2 in a matching manner. Preferably, the outer edge of the limiting plate 103 is connected with a hexagonal groove on the inner wall of the shell 2 in a matched manner, so that the limiting plate 103 is prevented from moving relative to the shell 2, and the reset spring 102 is further limited through the limiting plate 103.
As shown in fig. 7, the limit plate 103 is provided with a square groove 1033; the limit plate 103 includes a first limit splice plate 1031 and a second limit splice plate 1032; the first limit splice plate 1031 and the second limit splice plate 1032 are spliced, and a square groove 1033 which can penetrate through the pin head 101 is formed by slotting the centers of the first limit splice plate 1031 and the second limit splice plate 1032. The pin head 101 or the memory alloy wire 108 is prevented from rotating in the axial direction of the pin puller during operation, and the pin head 101 is prevented from rotating relative to the housing 2.
As a specific embodiment of the application, the front locking assembly comprises a plurality of groups of inner locking blocks 106 and outer locking blocks 107 which are connected in a matching way, and the inner locking blocks 106 and the outer locking blocks 107 which are connected in a matching way are uniformly arranged at intervals along the circumferential direction of the front combination seat 104; a memory alloy wire 108 is connected between each group of the inner locking blocks 106 and the outer locking blocks 107 which are connected in a matching way.
As a specific embodiment of the application, a plurality of groups of inner locking blocks 106 and outer locking blocks 107 which are connected in a matching way are also arranged in the rear locking assembly; and the number of the inner locking block 106 and the outer locking block 107 of the rear locking assembly is the same as the number of the inner locking block 106 and the outer locking block 107 of the front locking assembly.
Preferably, the front locking assembly and the rear locking assembly each comprise four sets of inner locking blocks 106 and outer locking blocks 107 that are cooperatively connected. And 8 memory alloy wires 108 with equal length are arranged between the four groups of inner locking blocks 106 and the outer locking blocks 107 which are connected in a matched manner, and two ends of each memory alloy wire 108 are locked through the inner locking blocks 106 and the outer locking blocks 107. The 8 memory alloy wires 108 can be connected in series or in parallel by changing the positions of the inner locking block 106 and the outer locking block 107 in the front combination seat 104 and the rear combination seat.
As an embodiment of the present application, the inner locking piece 106 and the outer locking piece 107 are made of conductive metal. Preferably, the inner locking block 106 and the outer locking block 107 are made of red copper, and may be made of other materials.
Preferably, two memory alloy wires 108 are fixed between each group of inner locking blocks 106 and outer locking blocks 107, and the two memory alloy wires 108 are conducted by the inner locking blocks 106 and the outer locking blocks 107 made of conductive metal while the memory alloy wires 108 are fixed, and the two memory alloy wires 108 are connected in series.
As shown in fig. 4, the outer edge of the outer lock block 107 is provided with a semicircular groove 1071 for welding the wire. The semicircular groove 1071 can be welded with an electric wire to lead out electrodes formed by the two memory alloy wires 108, the inner locking block 106 and the outer locking block 107. The power supply and the power switch are connected through the electric wire, and the memory alloy wire 108 is electrified or powered off through the on-off control of the power switch.
As shown in fig. 3, the return mechanism is a return spring 102, the return spring 102 is sleeved on the outer peripheral side of the pin head 101, one end of the return spring 102 abuts against the side end of the pin head 101, and the other end abuts against the side end of the limiting plate 103. When the memory alloy wire 108 is electrified, the temperature of the memory alloy wire is increased, the length of the memory alloy wire is shortened, the memory alloy wire 108 pulls the pin head 101 to move towards the inside of the shell, namely, to move towards the direction close to the limiting plate 103, when the pin head 101 moves towards the inside of the shell 2, one end of the reset spring 102 is propped against the limiting plate 103 and the other end of the reset spring moves towards the direction of the limiting plate 103 under the extrusion of the pin head 101, so that the reset spring 102 is compressed, when the temperature of the memory alloy wire 108 is reduced after the electrification of the memory alloy wire 108 is finished, the length of the memory alloy wire is prolonged, the tension of the memory alloy wire 108 on the pin head 101 is reduced, the pressing force of the pin head 101 on the reset spring 102 is reduced, and under the action of the elastic force of the reset spring 102, the reset spring 102 drives the pin head 101 to move towards the direction far away from the limiting plate 103, so that the pin head 101 is restored to the original position.
As an embodiment of the present application, the return spring 102 ensures that the memory alloy wire 108 is in a straightened state in the unpowered state. When the pin pulling device works, the memory alloy wire 108 is electrified, the memory alloy wire 108 heats and shortens after the electrification, the pin passing head 101 moves towards the inside of the shell 2, namely the pin head 101 moves out of the pin hole, and then the pin pulling action is realized.
As a specific embodiment of the present application, when the positions of the memory alloy wire 108 and the pin head 101 need to be adjusted, the front locking bolt 105 and the rear locking bolt 111 are loosened, the compression seat 112 is in a state of not compressing the inner locking block 106 and the outer locking block 107, the gap between the inner locking block 106 and the outer locking block 107 is enlarged, the memory alloy wire 108 is loosened, the relative positions of the memory alloy wire 108 and the pin head 101 can be adjusted, the length of the memory alloy wire 108 between the front locking assembly and the rear locking assembly is adjusted, after the memory alloy wire 108 is adjusted, the accurate position of the pin head 101 is ensured, and then the front locking bolt 105 and the rear locking bolt 111 are screwed, so that the memory alloy wire 108 and the pin head 101 are adjusted to the accurate position.
As shown in fig. 5 and 6, the front combination seat 104 includes a memory alloy wire hole 1041, a central hole 1042 and a circular arc clamping groove 1043; a memory alloy wire hole 1041 is formed along the circumferential direction of the front combination seat 104, the memory alloy wire hole 1041 is used for penetrating into the memory alloy wire 108, and a central hole 1042 is formed in the center of the front combination seat 104 and used for penetrating through the front locking bolt 105; the circular arc locking groove 1043 is used for locking into the outer locking block 107. Preferably, the rear nest structure is identical to the front nest 104 structure and size.
As shown in fig. 7, the limiting plate 103 is composed of two limiting splice plates, so that the limiting plate 103 is convenient to detach and install, and the outer edges of the limiting plate 103 composed of the two limiting splice plates form a hexagon, so that the limiting plate is convenient to clamp into a hexagon groove in the shell.
As shown in fig. 3, 7 and 8, the pin head 101 includes a baffle 1011, a square shaft 1012 and a square clamping end 1013, the baffle 1011 and the square clamping end 1013 are respectively disposed at two ends of the square shaft 1012, the baffle 1011 is used for pressing on a side portion of the return spring 102, the return spring 102 is sleeved on the periphery of the square shaft 1012, and one end of the pin head 101 close to the limiting plate 103 is the square clamping end 1013; the outer peripheral wall of the square clamping end 1013 is square; the outer periphery of the square shaft 1012 protrudes from the outer periphery of the square clamping end 1013, the outer periphery of the square clamping end 1013 is clamped into the square groove 1033, and the square clamping end 1013 cannot rotate in the square groove 1033, so that the square shaft 1012 is limited to rotate, and the pin head 101 is limited to rotate around the axial direction.
The beneficial effects achieved by the application are as follows:
(1) According to the application, the memory alloy wire is installed in a manner of clamping two ends, so that thicker memory alloy wires can be used, and a larger pin pulling force is provided.
(2) The application can conveniently adjust the length of the memory alloy wire during installation, so that the position of the pin head is more precise, and the pin pulling is more reliable.
The foregoing description is only illustrative of the application and is not to be construed as limiting the application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (8)
1. A memory alloy pin puller, comprising: the memory alloy inner core, the shell and the tail shell are fixed at the end part of the shell, and the memory alloy inner core is arranged in the shell along the length direction of the shell;
the memory alloy inner core comprises a pin head, a reset mechanism, a limiting plate and a memory alloy wire telescopic mechanism;
the limiting plate is limited at one end of the shell far away from the tail shell;
the reset mechanism and the memory alloy wire telescopic mechanism are respectively arranged at two sides of the limiting plate;
the reset mechanism is arranged on the periphery of the pin head, one end of the reset mechanism is limited at the side end of the pin head, and the other end of the reset mechanism is limited at the side end of the limiting plate;
one end of the memory alloy wire telescopic mechanism, which is close to the pin head, is connected with the pin head through a front locking bolt; the memory alloy wire telescopic mechanism stretches and contracts to drive the pin head to move in a direction approaching or separating from the limiting plate;
the memory alloy wire telescopic mechanism comprises a front locking assembly, a rear locking assembly and a memory alloy wire;
the front locking assembly is connected with the pin head through a front locking bolt;
the rear locking component is fixed at one end of the outer shell, which is close to the tail shell;
one end of the memory alloy wire is connected to the front locking assembly, and the other end of the memory alloy wire is connected to the rear locking assembly;
the front locking assembly comprises a front combination seat, an inner locking block, an outer locking block and a compression seat;
the front combined seat is inwards recessed with a groove at one side close to the pin head, and the outer locking block is arranged in the groove of the front combined seat;
the inner locking block is arranged on the inner side of the outer locking block;
the memory alloy wire is clamped and connected between the inner locking block and the outer locking block;
the inner locking block is provided with a first conical inclined surface;
the pressing seat is provided with a second conical inclined surface matched with the first conical inclined surface;
the compressing seat is arranged on one side of the front combined seat, and compresses the inner locking block through a second conical inclined surface, so that the memory alloy wire is compressed between the inner locking block and the outer locking block.
2. The memory alloy pin puller of claim 1, wherein the front lock bolt passes through the front combination seat and the compression seat; one end of the front locking bolt is limited at the end part of the front combination seat; the other end is in threaded connection with the pin head; the end part of the pin head, which is close to the compressing seat, is abutted against the side part of the compressing seat so that the compressing seat compresses the inner locking block.
3. The memory alloy pin puller of claim 1, wherein the rear locking assembly includes a rear lock block, a rear lock nut, and a rear lock bolt;
the rear locking block is in locking connection with the memory alloy wire;
the rear locking bolt penetrates into the rear locking block;
the rear lock nut is in threaded connection with the rear lock bolt.
4. The memory alloy pin puller according to claim 1, wherein the outer edge of the limiting plate is connected in a limiting groove in the shell in a matched manner; the limiting plate is provided with a square groove; the outer peripheral wall of the pin head, which is close to one end of the limiting plate, is square; the outer peripheral wall of the pin head is clamped into the square groove.
5. The memory alloy pin puller of claim 1, wherein the front locking assembly comprises a plurality of sets of inner locking blocks and outer locking blocks which are connected in a matched manner, and the inner locking blocks and the outer locking blocks which are connected in a matched manner are uniformly arranged at intervals along the circumferential direction of the front combination seat; and the memory alloy wires are connected between the inner locking blocks and the outer locking blocks which are connected in a matched manner.
6. The memory alloy pin puller of claim 5, wherein the inner locking block and the outer locking block are both of a conductive metal material.
7. The memory alloy pin puller of claim 6, wherein the outer edge of the outer locking block is provided with a semicircular groove for welding wires.
8. The memory alloy pin puller according to claim 1, wherein the return mechanism is a return spring, the return spring is sleeved on the outer peripheral side of the pin head, one end of the return spring abuts against the pin head side end, and the other end of the return spring abuts against the limiting plate side end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210158700.8A CN114346957B (en) | 2022-02-21 | 2022-02-21 | Memory alloy pin puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210158700.8A CN114346957B (en) | 2022-02-21 | 2022-02-21 | Memory alloy pin puller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114346957A CN114346957A (en) | 2022-04-15 |
| CN114346957B true CN114346957B (en) | 2023-09-29 |
Family
ID=81093105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210158700.8A Active CN114346957B (en) | 2022-02-21 | 2022-02-21 | Memory alloy pin puller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114346957B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115139079B (en) * | 2022-05-30 | 2024-01-30 | 长光卫星技术股份有限公司 | Large-stroke pin puller and satellite and arrow separation device based on shape memory alloy |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6601277B1 (en) * | 2002-09-13 | 2003-08-05 | Richard C. Swanson | Puller tool for bolt seals and the like |
| JP2005024036A (en) * | 2003-07-04 | 2005-01-27 | Awaji Sangyo Kk | Connection structure using ferrous radical shape-memory alloy |
| KR20120072475A (en) * | 2010-12-24 | 2012-07-04 | 한국과학기술원 | Separating device and system using shape memory steel material sylinder and wire, method for setting the device, separating method using the device and reassemble method using the device |
| KR20130045045A (en) * | 2011-10-25 | 2013-05-03 | 주식회사 해성산전 | The speed reducer having hollowness with a motor inmidair of hold shaft and hold flange processing method |
| KR20130006692U (en) * | 2012-05-10 | 2013-11-20 | 허만명 | Appliance to draw taper pin |
| CN104786188A (en) * | 2015-04-28 | 2015-07-22 | 大族激光科技产业集团股份有限公司 | Pin puller |
| CN105459012A (en) * | 2015-12-12 | 2016-04-06 | 无锡动力工程股份有限公司 | Pin pulling device for threaded-hole-free positioning pins |
| CN106141987A (en) * | 2016-07-28 | 2016-11-23 | 航天东方红卫星有限公司 | A kind of pin removal based on memory alloy wire |
| CN109048773A (en) * | 2018-09-29 | 2018-12-21 | 沈阳大学 | A kind of pin removal of memorial alloy |
| CN111469086A (en) * | 2020-04-15 | 2020-07-31 | 海默机器人(黄石)有限公司 | Mechanism capable of realizing automatic bolt after automatic calibration of hole center |
| WO2021174867A1 (en) * | 2020-03-05 | 2021-09-10 | 广东电网有限责任公司清远供电局 | Insulator r pin puller |
| WO2021253514A1 (en) * | 2020-06-17 | 2021-12-23 | 南京卓迈机械有限公司 | Tool holder clamping mechanism |
-
2022
- 2022-02-21 CN CN202210158700.8A patent/CN114346957B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6601277B1 (en) * | 2002-09-13 | 2003-08-05 | Richard C. Swanson | Puller tool for bolt seals and the like |
| JP2005024036A (en) * | 2003-07-04 | 2005-01-27 | Awaji Sangyo Kk | Connection structure using ferrous radical shape-memory alloy |
| KR20120072475A (en) * | 2010-12-24 | 2012-07-04 | 한국과학기술원 | Separating device and system using shape memory steel material sylinder and wire, method for setting the device, separating method using the device and reassemble method using the device |
| KR20130045045A (en) * | 2011-10-25 | 2013-05-03 | 주식회사 해성산전 | The speed reducer having hollowness with a motor inmidair of hold shaft and hold flange processing method |
| KR20130006692U (en) * | 2012-05-10 | 2013-11-20 | 허만명 | Appliance to draw taper pin |
| CN104786188A (en) * | 2015-04-28 | 2015-07-22 | 大族激光科技产业集团股份有限公司 | Pin puller |
| CN105459012A (en) * | 2015-12-12 | 2016-04-06 | 无锡动力工程股份有限公司 | Pin pulling device for threaded-hole-free positioning pins |
| CN106141987A (en) * | 2016-07-28 | 2016-11-23 | 航天东方红卫星有限公司 | A kind of pin removal based on memory alloy wire |
| CN109048773A (en) * | 2018-09-29 | 2018-12-21 | 沈阳大学 | A kind of pin removal of memorial alloy |
| WO2021174867A1 (en) * | 2020-03-05 | 2021-09-10 | 广东电网有限责任公司清远供电局 | Insulator r pin puller |
| CN111469086A (en) * | 2020-04-15 | 2020-07-31 | 海默机器人(黄石)有限公司 | Mechanism capable of realizing automatic bolt after automatic calibration of hole center |
| WO2021253514A1 (en) * | 2020-06-17 | 2021-12-23 | 南京卓迈机械有限公司 | Tool holder clamping mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114346957A (en) | 2022-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114346957B (en) | Memory alloy pin puller | |
| TW201907624A (en) | Wedge connector assembly and method and linkage therewith | |
| CN212552527U (en) | Auxiliary clamping device for butt welding of round pipes | |
| CN101941144B (en) | Automotive power steering pipe support fixing device | |
| US11539179B2 (en) | Compression tool with biasing member | |
| CN111244837B (en) | Electric power accessory circuit is acted as go-between and is fixed fastener | |
| CN115528509A (en) | Rapid wire connection equipment and connection method | |
| CN109786987B (en) | Cable joint connecting structure and connecting method | |
| CN217115423U (en) | Lead lapping device of live working robot | |
| CN114932432B (en) | High-flexibility adjusting tool for machining high-torsion mandrel and application method of high-flexibility adjusting tool | |
| CN213071620U (en) | Cable connector of electromagnetic riveting equipment | |
| CN113571961A (en) | Cable connecting mechanism and using method thereof | |
| CN106972339B (en) | A frock clamp for generating line is connected | |
| CN113990573A (en) | Steady butt joint formula cable construction | |
| CN217551063U (en) | Rivet tool and wire box assembly | |
| CN105356078A (en) | Connection terminal including two metal materials | |
| CN210780492U (en) | Linear electric motor positioning device | |
| CN219513752U (en) | High-efficient strenghthened type insulating strain clamp | |
| CN221248580U (en) | Clamp for fixing pole piece | |
| US11616311B1 (en) | Electrical connector fastener assembly | |
| CN219041503U (en) | But quick assembly's integrated linear motor | |
| CN220239965U (en) | Riveting equipment | |
| CN218470321U (en) | Stripping device for wire and cable insulating layer | |
| CN216929139U (en) | Circuit breaker conductive clip crimping device | |
| CN114700444B (en) | Fusing shearing device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |