Double-state pin puller

Abstract

The double-state pin puller comprises a barrel shell, a first yoke, a second yoke, a first coil, a second coil, a first armature column, a second armature column, a first end cover, a second end cover, a first compression spring, a second compression spring and an outer barrel. The first coil, the first yoke and the first armature column form an electromagnet, current is supplied to the first coil, the first yoke generates magnetism to attract the first armature column, and the first actuating shaft is driven to move in the direction close to the first yoke. The second coil, the second yoke and the second armature column form an electromagnet, current is supplied to the second coil, the first yoke generates magnetism to attract the first armature column, and the second actuating shaft is driven to move in the direction close to the second yoke. The first actuating shaft and the second actuating shaft are fixedly connected with the pin to be pulled respectively, and double-state actuation of the pin puller can be achieved. The double-state pin puller is simple in structure, convenient to install and capable of saving installation space.

Description

Technical Field

[0001] The present application relates to the technical field of locking devices, and in particular to a dual-state pin puller. Background Art

[0002] Pin pullers are widely used in aerospace, shipbuilding, weapons, aviation and other fields. The methods of using pin pullers vary according to different fields and working conditions. In many working conditions, the pin pullers in the prior art are mostly single-state actuated structures with a single actuating shaft.

[0003] In some special working conditions, two actuating shafts are required to achieve locking and unlocking. In this case, two single-state actuated pin pullers need to be installed, which requires more space. However, in some cases, there is not enough installation space to install two separate pin pullers. Summary of the Invention

[0004] The present invention provides a dual-state pin puller that can solve the technical problems of difficult installation and limited space caused by the need to install two pin pullers in the prior art. The technical solution is as follows:

[0005] A dual-state pin puller comprises a cylinder shell, a first yoke, a second yoke, a first coil, a second coil, a first armature column, a second armature column, a first end cover, a second end cover, a first compression spring, a second compression spring and an outer cylinder.

[0006] The cylindrical shell has a first end and a second end; the first yoke and the second yoke are fixedly connected to the cylindrical shell; the first coil is sleeved outside the cylindrical shell and is located on the outside of the first yoke; the second coil is sleeved outside the cylindrical shell and is located on the outside of the second yoke. The first armature column is slidably arranged in the cylindrical shell and is located on the side of the first yoke away from the second yoke, and the end of the first armature column away from the first yoke is provided with a first actuating shaft with a diameter smaller than the first armature column. The second armature column is slidably arranged in the cylindrical shell and is located on the side of the second yoke away from the first yoke, and the end of the second armature column away from the second yoke is provided with a second actuating shaft with a diameter smaller than the second armature column; the first end cover is connected to the first end of the cylindrical shell, and has a first through hole in the middle, and the first actuating shaft passes through the first through hole. The second end cover is connected to the second end of the cylindrical shell, and has a second through hole in the middle, and the second actuating shaft passes through the second through hole. A first compression spring is arranged between the first armature column and the first yoke; a second compression spring is arranged between the second armature column and the second yoke; and an outer cylinder, the two ends of the outer cylinder are respectively fixedly connected to the first end cover and the second end cover, and the outer cylinder is fixedly connected between the first end cover and the second end cover.

[0007] Optionally, the bistable pin extractor further includes a connecting bolt; an inner wall in the middle of the cylinder shell has a spacer extending towards the central axis of the cylinder shell; the middle of the first yoke has a threaded hole, and the middle of the second yoke has a third through hole. The first yoke and the second yoke are fixedly connected to both sides of the spacer through the connecting bolt.

[0008] Optionally, an end of the first armature column facing the first yoke has a first groove for accommodating the first compression spring; an end of the second armature column facing the second yoke has a second groove for accommodating the second compression spring.

[0009] Optionally, the first through hole is a first stepped hole, and a first magnetic isolation gasket is arranged between the first stepped hole and the first armature column. The second through hole is a second stepped hole, and a second magnetic isolation gasket is arranged between the second stepped hole and the second armature column.

[0010] Optionally, one end of the first yoke facing the first armature column has a first tapered groove, and an end of the first armature column facing the first yoke has a first tapered head matching the first tapered groove; one end of the second yoke facing the second armature column has a second tapered groove, and an end of the second armature column facing the second yoke has a second tapered head matching the second tapered groove.

[0011] Optionally, the bistable pin extractor further includes a connecting wire; a wire passing hole extending along the axial direction is formed in the center of the first armature column, and the connecting wire extends into the cylinder shell from the wire passing hole and is respectively connected to the first coil and the second coil.

[0012] Optionally, an outer surface of the outer cylinder has an external thread for connecting to a mounting threaded hole of the mechanism to be pin-extracted; an outer side surface of the second end cover has a positioning groove matching a positioning post on the mechanism to be pin-extracted.

[0013] Optionally, a first inner retaining ring and a first outer retaining ring are arranged on an outer surface of the cylinder shell, and the first outer retaining ring and the first inner retaining ring form a first annular groove for accommodating the first coil; a second inner retaining ring and a second outer retaining ring are arranged on the outer surface of the cylinder shell, and the second outer retaining ring and the second inner retaining ring form a second annular groove for accommodating the second coil.

[0014] The beneficial effects brought by the technical solutions provided in the embodiments of the present application at least include:

[0015] A bistate pin extractor includes: a cylinder shell, a first yoke, a second yoke, a first coil, a second coil, a first armature column, a second armature column, a first end cover, a second end cover, a first compression spring, a second compression spring, and an outer cylinder. The first coil, the first yoke, and the first armature column form an electromagnet. When an electric current is applied to the first coil, the first yoke generates magnetism to attract the first armature column, driving the first actuating shaft to move axially towards the direction close to the first yoke. The second coil, the second yoke, and the second armature column form an electromagnet. When an electric current is applied to the second coil, the first yoke generates magnetism to attract the first armature column, driving the second actuating shaft to move axially towards the direction close to the second yoke. By fixedly connecting the first actuating shaft and the second actuating shaft to the pin to be extracted respectively, the bistate actuation of the pin extractor can be realized. The bistate pin extractor of the present application has a simple structure, is convenient to install, and can save installation space.

[0016] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is an overall three-dimensional schematic diagram of the bistate pin extractor provided by the embodiment of the present application;

[0019] Figure 2 It is an overall front sectional view of the bistate pin extractor provided by the embodiment of the present application;

[0020] Figure 3 It is a three-dimensional schematic diagram of the outer cylinder provided by the embodiment of the present application;

[0021] Figure 4 It is a three-dimensional schematic diagram of the cylinder shell provided by the embodiment of the present application;

[0022] Figure 5 It is a front sectional view of the cylinder shell provided by the embodiment of the present application;

[0023] Figure 6 It is a front sectional view of the first armature column provided by the embodiment of the present application;

[0024] Figure 7 It is a front sectional view of the first yoke provided by the embodiment of the present application;

[0025] Figure 8 It is a front sectional view of the second yoke provided by the embodiment of the present application;

[0026] Figure 9 This is the front elevation sectional view of the second armature iron column provided by the embodiment of the present application.

[0027] Description of the reference numerals

[0028] 1 - Cylinder shell; 101 - Spacer ring; 102 - First inner retaining ring; 103 - First outer retaining ring; 104 - Second inner retaining ring; 105 - Second outer retaining ring; 2 - First yoke iron; 201 - Screw hole; 202 - First tapered groove; 3 - Second yoke iron; 301 - Third through hole; 302 - Second tapered groove; 4 - First coil; 5 - Second coil; 6 - First armature iron column; 601 - First actuating shaft; 602 - First groove; 603 - First tapered head; 604 - Threading hole; 7 - Second armature iron column; 701 - Second actuating shaft; 702 - Second groove; 703 - Second tapered head; 8 - First end cover; 801 - First through hole; 9 - Second end cover; 901 - Second through hole; 902 - Positioning groove; 10 - First compression spring; 11 - Second compression spring; 12 - Outer cylinder; 1201 - External thread; 13 - Connecting bolt; 14 - First magnetic isolation gasket; 15 - Second magnetic isolation gasket; 16 - Connecting wire. Detailed implementation manners

[0029] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0030] In the present disclosure, unless otherwise stated, the orientation terms such as "upper" and "lower" generally refer to "upper" and "lower" relative to each other in the gravity direction when the corresponding components are in the use state, and "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another, and do not have sequentiality and importance. In the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements.

[0031] A bistate pin puller refers to a pin puller having two actuating shafts.

[0032] According to an embodiment of the present application, with reference to Figures 1 to 9 as shown, a bistate pin puller includes: a cylinder shell 1, a first yoke iron 2, a second yoke iron 3, a first coil 4, a second coil 5, a first armature iron column 6, a second armature iron column 7, a first end cover 8, a second end cover 9, a first compression spring 10, a second compression spring 11, and an outer cylinder 12.

[0033] With reference to Figure 2As shown, the cylindrical shell 1 has a first end and a second end; the first yoke 2 and the second yoke 3 are fixedly connected to the cylindrical shell 1; the first coil 4 is sleeved outside the cylindrical shell 1 and is located on the outside of the first yoke 2; the second coil 5 is sleeved outside the cylindrical shell 1 and is located on the outside of the second yoke 3; the first armature column 6 is slidably arranged in the cylindrical shell 1 and is located on the side of the first yoke 2 away from the second yoke 3, and the end of the first armature column 6 away from the first yoke 2 is provided with a first actuating shaft 601 with a diameter smaller than the first armature column 6; the second armature column 7 is slidably arranged in the cylindrical shell 1 and is located on the side of the second yoke 3 away from the first yoke 2, and the end of the second armature column 7 away from the second yoke 3 is provided with a second actuating shaft 701 with a diameter smaller than the second armature column 7.

[0034] refer to Figure 2 As shown, the first end cover 8 is connected to the first end of the cylindrical shell 1, and has a first through hole 801 in the middle, and the first actuating shaft 601 passes through the first through hole 801; the second end cover 9 is connected to the second end of the cylindrical shell 1, and has a second through hole 901 in the middle, and the second actuating shaft 701 passes through the second through hole 901.

[0035] The first compression spring 10 is arranged between the first armature column 6 and the first yoke 2; the second compression spring 11 is arranged between the second armature column 7 and the second yoke 3; and the two ends of the outer cylinder (12) are fixedly connected to the first end cover 8 and the second end cover 9 respectively.

[0036] In the above embodiment, the first coil 4, the first yoke 2, and the first armature post 6 constitute an electromagnet. When current is passed through the first coil 4, the first yoke 2 generates magnetism that can attract the first armature post 6, thereby driving the first actuating shaft 601 to move toward the first yoke 2. The second coil 5, the second yoke 3, and the second armature post 7 constitute an electromagnet. When current is passed through the second coil 5, the first yoke 2 generates magnetism that can attract the first armature post 6, thereby driving the second actuating shaft 701 to move toward the second yoke 3. By fixing the first actuating shaft 601 and the second actuating shaft 701 to the pin to be pulled, respectively, a dual-state actuation of the pin puller can be achieved. The dual-state pin puller of the present application has a simple structure, is easy to install, and can save installation space.

[0037] In the above embodiments, it should be noted that: the first coil 4 and the second coil 5 can be connected in series. In this case, the winding directions of the first coil 4 and the second coil 5 are the same. After the first yoke and the second yoke generate magnetism, the adjacent ends can attract each other. The first coil 4 and the second coil 5 can also be connected in parallel. In this case, by controlling the current directions applied to the first coil 4 and the second coil 5, or by adjusting the winding directions of the first coil 4 and the second coil 5, the adjacent ends of the first yoke iron 2 and the second yoke iron 3 can attract each other after generating magnetism.

[0038] According to an embodiment of the present application, referring to Figure 2 as shown, the bistable detent can further include a connecting bolt 13; referring to Figure 5 as shown, the inner wall of the middle part of the cylinder shell 1 has a spacer ring 101 extending towards the central axis direction of the cylinder shell 1; referring to Figure 7 and Figure 8 as shown, the middle part of the first yoke iron 2 has a screw hole 201, the middle part of the second yoke iron 3 has a third through hole 301, and the first yoke iron 2 and the second yoke iron 3 are fixedly connected to both sides of the spacer ring 101 through the connecting bolt 13. The connecting bolt 13 first extends into the third through hole 301 of the second yoke iron 3 and is screwed into the screw hole 201 of the first yoke iron 2. In actual working conditions, the third through hole 301 can be a countersunk hole for accommodating the head of the connecting bolt 13. In other embodiments, a through hole can be provided in the middle part of the first yoke iron 2, and then, the first yoke iron 2 and the second yoke iron 3 can be fixedly connected by using a connecting bolt 13 and a nut.

[0039] According to an embodiment of the present application, referring to Figure 7 as shown, the end of the first armature column 6 facing the first yoke iron 2 has a first groove 602 for accommodating the first compression spring 10. In this case, it can be ensured that the first compression spring 10 will not tip over. Among them, the diameter of the first groove 602 is slightly larger than the diameter of the first compression spring 10, and the depth is at least greater than half of the height of the first compression spring 10.

[0040] Similarly, referring to Figure 8 as shown, the end of the second armature column 7 facing the second yoke iron 3 has a second groove 702 for accommodating the second compression spring 11.

[0041] According to an embodiment of the present application, referring to Figure 2As shown, the first through hole 801 is a first stepped hole, and a first magnetic isolation gasket 14 is provided between the first stepped hole and the first armature iron column 6. The second through hole 901 is a second stepped hole, and a second magnetic isolation gasket 15 is provided between the second stepped hole and the second armature iron column 7. The first magnetic isolation gasket 14 and the second magnetic isolation gasket 15 can isolate the magnetic field to prevent the magnetic field from interfering with other components.

[0042] According to an embodiment of the present application, referring to Figure 2 , Figure 6 and Figure 7 As shown, one end of the first yoke iron 2 facing the first armature iron column 6 has a first tapered groove 202, and the end of the first armature iron column 6 facing the first yoke iron 2 has a first tapered head 603 matching the first tapered groove 202. By providing the mutually matching first tapered groove 202 and first tapered head 603, it is convenient for the first armature iron column 6 to automatically center and align during the process of approaching the first yoke iron 2, thereby improving the coaxiality of the first armature iron column 6 and the first yoke iron 2.

[0043] Similarly, referring to Figure 2 , Figure 8 and Figure 8 As shown, one end of the second yoke iron 3 facing the second armature iron column 7 has a second tapered groove 302, and the end of the second armature iron column 7 facing the second yoke iron 3 has a second tapered head 703 matching the second tapered groove 302.

[0044] According to an embodiment of the present application, referring to Figure 2 As shown, the bistable pin puller further includes a connecting wire 16;

[0045] The center of the first armature iron column 6 has a wire passing hole 604 extending along the axial direction. The connecting wire 16 extends into the cylindrical shell 1 from the wire passing hole 604 and is respectively connected to the first coil 4 and the second coil 5. By providing the wire passing hole 604 in the first actuating shaft 601, the probability of the connecting wire 16 getting entangled is reduced. In other embodiments, the connecting wire 16 can also pass through a wire passing hole provided on the cylindrical shell 1, and the present application does not limit this.

[0046] According to an embodiment of the present application, referring to Figures 1 to 3As shown, the outer surface of the outer cylinder 12 has an external thread 1201, and the external thread 1201 is used to connect to the installation screw hole of the pin extraction mechanism to be used; the outer side surface of the second end cover 9 has a positioning groove 902 that matches the positioning post on the pin extraction mechanism to be used. In this embodiment, a structure for connecting the bistable pin extractor of the present application embodiment is provided on the pin extraction mechanism to be used. This structure can be a screw hole 201. Then, an external thread 1201 can be provided on the outer cylinder 12, and the bistable pin extractor can be threadedly connected to the pin extraction mechanism to be used. In order to improve the positioning accuracy of the pin extraction mechanism to be used and the bistable pin extractor, a positioning post can be provided on the pin extraction mechanism to be used, and a positioning groove 902 can be provided on the upper lifting pin extractor.

[0047] According to an embodiment of the present application, with reference to Figure 4 As shown, a first inner retaining ring 102 and a first outer retaining ring 103 are provided on the outer surface of the cylinder shell 1. The first outer retaining ring 103 and the first inner retaining ring 102 form a first annular groove for accommodating the first coil 4; a second inner retaining ring 104 and a second outer retaining ring 105 are provided on the outer surface of the cylinder shell 1. The second outer retaining ring 105 and the second inner retaining ring 104 form a second annular groove for accommodating the second coil 5. By such design, the first coil 4 can be accommodated in the first annular groove, and the second coil 5 can be accommodated in the second annular groove, so as to be able to protect the first coil 4 and the second coil 5.

[0048] The working principle of the bistable pin extractor of the present application will be described below in combination with specific usage steps. Among them, the bistable pin extractor is locked when powered off and unlocked when powered on.

[0049] First step, install the bistable pin extractor into the screw hole 201 of the pin extraction mechanism to be used through the external thread 1201 of the outer cylinder 12. At this time, the first actuating shaft 601 and the second actuating shaft 701 are in the locked state;

[0050] Second step, when unlocking is required, power on the first coil 4 and the second coil 5 of the bistable pin extractor. The first actuating shaft 601 and the second actuating shaft 701 contract, and the bistable pin extractor is unlocked. The bistable pin extractor of the present application can have a double actuating shaft and can perform two pin extraction actions, so the installation difficulty is reduced and the installation space is saved.

[0051] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0052] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combinations.

[0053] Furthermore, any combination can be made among the various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A bistate pin puller, characterized in that, include: A cylindrical shell (1) having a first end and a second end; The first yoke (2) and the second yoke (3) are fixedly connected in the cylindrical shell (1); A first coil (4) is sleeved outside the cylindrical shell (1) and located outside the first yoke (2); A second coil (5) is sleeved outside the cylindrical shell (1) and is located outside the second yoke (3); A first armature column (6) is slidably disposed in the cylindrical shell (1) and is located on a side of the first yoke (2) away from the second yoke (3), and a first actuating shaft (601) having a diameter smaller than that of the first armature column (6) is provided at an end of the first armature column (6) away from the first yoke (2); A second armature column (7) is slidably disposed in the cylindrical shell (1) and is located on a side of the second yoke (3) facing away from the first yoke (2); a second actuating shaft (701) having a diameter smaller than that of the second armature column (7) is provided at an end of the second armature column (7) facing away from the second yoke (3); A first end cover (8) connected to the first end of the cylindrical shell (1) has a first through hole (801) in the middle, and the first actuating shaft (601) passes through the first through hole (801); A second end cover (9) connected to the second end of the cylindrical shell (1) has a second through hole (901) in the middle, and the second actuating shaft (701) passes through the second through hole (901); a first compression spring (10) disposed between the first armature column (6) and the first yoke (2); a second compression spring (11) disposed between the second armature column (7) and the second yoke (3); and an outer cylinder (12), wherein both ends of the outer cylinder (12) are fixedly connected to the first end cover (8) and the second end cover (9), respectively.

2. The bistable pin puller according to claim 1, characterized in that, The dual-state pin puller further includes a connecting bolt (13); The inner wall of the middle portion of the cylindrical shell (1) has a spacer (101) extending in a direction close to the central axis of the cylindrical shell (1); The first yoke (2) has a screw hole (201) in the middle, the second yoke (3) has a third through hole (301) in the middle, and the first yoke (2) and the second yoke (3) are fixedly connected on both sides of the spacer (101) by the connecting bolts (13).

3. The bistable pin extractor according to claim 2, characterized in that, The end of the first armature column (6) facing the first yoke (2) has a first groove (602), and the first groove (602) is used to accommodate the first compression spring (10); The end of the second armature column (7) facing the second yoke (3) has a second groove (702), and the second groove (702) is used to accommodate the second compression spring (11).

4. The bistable pin extractor according to claim 1, wherein, The first through hole (801) is a first stepped hole, and a first magnetic isolation gasket (14) is provided between the first stepped hole and the first armature column (6); The second through hole (901) is a second stepped hole, and a second magnetic isolation gasket (15) is provided between the second stepped hole and the second armature column (7).

5. The bistable pin puller according to claim 1, characterized in that, One end of the first yoke iron (2) facing the first armature iron column (6) has a first tapered groove (202), and an end of the first armature iron column (6) facing the first yoke iron (2) has a first tapered head (603) matching the first tapered groove (202); One end of the second yoke iron (3) facing the second armature iron column (7) has a second tapered groove (302), and an end of the second armature iron column (7) facing the second yoke iron (3) has a second tapered head (703) matching the second tapered groove (302).

6. The bistable pin puller according to claim 1, characterized in that, The bistable pin puller further includes a connecting wire (16); A wire passing hole (604) extending axially is provided at the center of the first armature iron column (6), and the connecting wire (16) extends into the cylinder housing (1) from the wire passing hole (604) and is respectively connected to the first coil (4) and the second coil (5).

7. The bistable pin puller according to claim 1, wherein, The outer surface of the outer cylinder (12) has an external thread (1201) for connecting with the mounting screw hole of the mechanism to be pin-pulled; the outer side surface of the second end cover (9) has a positioning groove (902) matching the positioning post on the mechanism to be pin-pulled.

8. The bistable pin extractor according to claim 1, characterized in that, The outer surface of the cylinder housing (1) is provided with a first inner retaining ring (102) and a first outer retaining ring (103), and the first outer retaining ring (103) and the first inner retaining ring (102) form a first annular groove for accommodating the first coil (4); The outer surface of the cylinder housing (1) is provided with a second inner retaining ring (104) and a second outer retaining ring (105), and the second outer retaining ring (105) and the second inner retaining ring (104) form a second annular groove for accommodating the second coil (5).

Images