Three-axis air-floating platform pin lock mechanism

Abstract

The present invention provides a three-axis air-floating platform pin-locking mechanism, including a locking hole assembly, a locking needle assembly, and a three-way adjustment structure. The upper side of the three-way adjustment structure is detachably connected to the locking needle assembly. The locking needle of the locking needle assembly and the locking hole of the locking hole assembly can be automatically aligned. The locking hole assembly is fixed to the main inertia axis position of the three-axis air-floating platform, and the center of the locking hole is aligned with the spherical center of the three-axis air-floating platform. The three-axis air-floating platform pin-locking mechanism described in the present invention uses a needle sleeve, a guide sleeve, a buckle unit, and a press shaft to form an external telescopic assembly. The external telescopic assembly and the outer shell form a sliding pair to achieve locking and unlocking; the locking needle, the needle sleeve, and the guide sleeve form an internal telescopic sliding pair, and the locking hole and the locking needle are designed to cooperate with the inverted cone surface to achieve self-alignment.

Description

Technical Field

[0001] The invention belongs to the field of spacecraft ground test equipment, and in particular relates to a three-axis air-floating table pin locking mechanism. Background Art

[0002] The three-axis air-floating platform is the most advanced full-physical simulation equipment for satellite attitude control systems currently used in the world. It can simulate the attitude motion of satellites in an outer space environment without interference torque.

[0003] To ensure the effectiveness of ground tests, the interference torque of the air-floating table needs to meet the index requirements. When the center of mass of the three-axis air-floating table and the center of the sphere do not coincide, an interference torque will be generated, so the center of mass of the three axes needs to be adjusted to the center of the sphere before the three-axis air-floating table is used. In order to reduce the difficulty of debugging, the two horizontal axes need to be decoupled. At this time, a pin locking mechanism needs to be studied, which can pin the two horizontal axes separately. When one of the axes is pinned, the table body can rotate around the pinned axis, and then the center of mass position of the locked axis can be adjusted. There is currently no patent for the pin locking mechanism of the three-axis air-floating table. The existing pin locking mechanism generally includes a convex connecting part and a concave connecting part. The connection / separation is achieved by inserting / pulling the convex connecting part into / out of the concave connecting part along the axial direction. The device needs to be manually plugged in and out for connection / unlocking. The unlocking process will generate a force on the locked object, thereby interfering with the table body, which is not suitable for the three-axis air-floating table. Summary of the invention

[0004] In view of this, the present invention aims to propose a three-axis air floating table pin locking mechanism, a mechanism that can pin the horizontal axis, which can meet the center of mass test state before the three-axis air floating table test. When one of the axes is pinned, the other horizontal axis can rotate around the pinned axis, thereby adjusting the center of mass position.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A three-axis air floating table pin locking mechanism comprises a locking hole assembly, a locking needle assembly and a three-way adjustment structure. The upper side of the three-way adjustment structure is detachably connected to the locking needle assembly. The locking needle of the locking needle assembly and the locking hole of the locking hole assembly can be automatically aligned. The locking hole assembly is fixed to the main inertia axis position of the three-axis air floating table, and the center of the locking hole is aligned with the center of the ball of the three-axis air floating table.

[0007] Furthermore, the lock hole assembly includes a lock hole shell, which is a barrel-shaped structure with a boss. A blind hole is provided on one side of the lock hole shell close to the three-axis air flotation table. The blind hole is used to install the equipment of the three-axis air flotation table. A lock hole is provided on the other side of the lock hole shell.

[0008] Furthermore, the locking pin assembly includes an outer shell, an outer telescopic assembly and a locking pin. The outer telescopic assembly is arranged inside the outer shell, and the outer telescopic assembly reciprocates along the outer shell under the action of external force; the locking pin is installed inside the outer telescopic assembly, and a return spring is connected between the outer telescopic assembly and the outer shell for unlocking and resetting the outer telescopic assembly.

[0009] Furthermore, the external telescopic assembly includes a needle sleeve, a guide sleeve, a push shaft and a buckle unit; the outer part of the needle sleeve is sleeved with a return spring, and one end of the return spring contacts the inner wall of the No. 1 shell, and the other end contacts the needle sleeve seat of the needle sleeve; a locking pin is provided in the needle sleeve hole inside the needle sleeve, and the locking pin can move relatively along the needle sleeve under external force; a guide sleeve is installed at one end of the needle sleeve, and a push shaft and a buckle unit are installed at the end of the guide sleeve away from the needle sleeve, and the buckle unit is fixedly sleeved with the push shaft inside the buckle unit, and the end of the push shaft extends to the outside of the bottom cover; a guide spring is provided between the push shaft and the needle lock.

[0010] Furthermore, a lock hole guide groove is provided on one side of the lock hole assembly close to the lock hole, the lock hole guide groove is a truncated cone-shaped structure, and a lock hole is provided at the center of the lock hole guide groove; the needle sleeve comprises a guide portion, a needle sleeve connecting portion and a needle sleeve seat of an integrated structure, one side of the needle sleeve connecting portion is solidified with the needle sleeve seat to form a T-shaped structure, the other end of the needle sleeve connecting portion is connected to the guide portion, a through groove is provided inside the guide portion, and the through groove is used to pass the lock needle; the size of the guide portion matches the size of the lock hole guide groove, so that under the action of external force, the guide portion can enter the lock hole guide groove, thereby achieving automatic alignment of the lock needle and the lock hole.

[0011] Furthermore, the outer shell includes a No. 1 shell, a No. 2 shell, and a bottom cover. The No. 1 shell and the bottom cover are fixedly connected on both sides of the No. 2 shell to form a shell structure. A bottom cover through hole is provided in the middle of the bottom cover. The bottom cover through hole is used to pass the push shaft, and the push shaft can move relatively along the bottom cover under external force.

[0012] Furthermore, the No. 1 shell is a cylindrical structure with one end open, and a No. 1 shell through hole is provided on the side of the No. 1 shell close to the lock hole assembly, and the outer diameter of the No. 1 shell through hole is larger than the outer diameter of the needle sleeve connecting part and smaller than the cross-section of the return spring.

[0013] Furthermore, the three-way adjustment structure includes a Z-direction adjustment part, a clamping part and an XY adjustment part. The clamping part is fixedly installed on one side of the Z-direction adjustment part, the clamping part is used to support the locking needle assembly, and the XY adjustment part is installed at the bottom of the Z-direction adjustment part.

[0014] Furthermore, the guide sleeve includes a guide sleeve seat, a guide sleeve body and a guide seat. The guide sleeve body and the guide seat are fixedly connected to form a T-shaped structure. The guide seats are symmetrically arranged on the outer wall of the guide sleeve body. The guide seats are slidably connected to the guide platform on the second shell.

[0015] Furthermore, the snap unit includes a button, an outer cover, a leaf spring mounting seat and a leaf spring. The outer cover is a circular ring structure. The leaf spring mounting seat is fixedly sleeved inside the outer cover. A snap unit through hole is provided in the middle of the leaf spring mounting seat for fixing the sleeved button shaft. A leaf spring is installed on the inner wall of the leaf spring mounting seat. The leaf spring is fixedly connected to the button and is located outside the outer cover. The leaf spring has rigidity. A pair of card slots and button holes are symmetrically provided on the outer wall of the outer shell, and the button hole is a through hole for placing the button in the initial state, and the card slot is a through slot for locking the button.

[0016] Compared with the prior art, the three-axis air-floating platform pin locking mechanism of the present invention has the following advantages:

[0017] (1) The three-axis air-floating platform pin lock mechanism described in the present invention uses a needle sleeve, a guide sleeve, a buckle unit and a push shaft to form an outer telescopic component, which forms a sliding pair with the outer shell to achieve locking and unlocking.

[0018] (2) The three-axis air-floating platform pin locking mechanism described in the present invention forms an inner telescopic sliding pair through the locking pin, the needle sleeve and the guide sleeve, and the locking hole and the locking pin are designed to cooperate with the inverted cone surface, thereby achieving self-alignment.

[0019] (3) The three-axis air-floating platform pin lock mechanism described in the present invention adjusts the relative position of the lock pin assembly and the lock hole through a three-way adjustment mechanism, thereby achieving reliable alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the pin locking mechanism of the three-axis air-floating platform according to an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a locking state of a locking hole assembly and a locking pin assembly according to an embodiment of the present invention;

[0023] Figure 3 for Figure 2 AA section view;

[0024] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0025] Figure 5 A cross-sectional view of a keyhole assembly according to an embodiment of the present invention;

[0026] Figure 6 A side view of the locking needle assembly in the unlocked state according to the embodiment of the present invention;

[0027] Figure 7 for Figure 6 BB section view;

[0028] Figure 8 is a schematic diagram of a second housing according to an embodiment of the present invention;

[0029] Fig. 9 is a cross-sectional view of a needle sleeve according to an embodiment of the present invention;

[0030] Fig.10 A schematic diagram of a guide sleeve according to an embodiment of the present invention;

[0031] Fig.11 is a schematic diagram of a buckle unit according to an embodiment of the present invention;

[0032] Fig.12 A connection diagram of a button and a leaf spring according to an embodiment of the present invention;

[0033] Fig.13 A schematic diagram of a three-way adjustment structure according to an embodiment of the present invention;

[0034] Fig.14 A schematic diagram of an X-axis adjustable base according to an embodiment of the present invention;

[0035] Fig.15 It is a schematic diagram of the X-axis moving plate described in an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1-locking hole assembly; 11-locking hole housing; 12-locking hole; 13-blind hole; 14-locking hole guide groove; 2-locking needle assembly; 21-No. 1 housing; 22-No. 2 housing; 221-card slot; 222-button hole; 223-guide platform; 23-bottom cover; 24-locking needle; 25-needle sleeve; 251-guide part; 252-needle sleeve connecting part; 253-needle sleeve seat; 254-through groove; 26-return spring; 27-guide sleeve; 271-guide sleeve seat; 272-guide sleeve body; 273-guide seat; 28-guide spring; 29-press shaft; 210- Buckle unit; 2101-button; 2102-outer cover; 2103-leaf spring mounting seat; 2104-leaf spring; 3-three-way adjustment structure; 31-Z-direction adjustment part; 311-tension adjustment seat; 312-adjustment rod; 32-clamping part; 33-XY-direction adjustment part; 331-X-direction adjustment base; 332-X-direction moving plate; 333-Y-direction adjustment base; 334-Y-direction moving plate; 335-X-direction adjustment handle fixing seat; 336-X-direction adjustment handle; 337-Y-direction adjustment handle fixing seat; 338-Y-direction adjustment handle; 4-support column; 5-magnetic suction seat. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0042] Three-axis air-floating platform pin locking mechanism, such as Figures 1 to 15 As shown, it includes a locking hole assembly 1, a locking pin assembly 2, a three-way adjustment structure 3, a support column 4, and a magnetic suction seat 5. The locking pin assembly 2 is detachably connected to the upper side of the adjustment structure 3. The locking pin of the locking pin assembly 2 and the locking hole of the locking hole assembly 1 can be automatically aligned. The locking hole assembly 1 is fixed to the main inertia axis position of the three-axis air floating table, and the center of the locking hole is aligned with the spherical center of the three-axis air floating table. The present application adjusts the relative position of the locking pin assembly and the locking hole through the three-way adjustment mechanism, thereby achieving reliable alignment.

[0043] The bottom of the three-way adjustment structure 3 is connected to the magnetic suction seat 5 through the support column 4, which is convenient for the placement and transportation of the three-axis air floating platform pin locking mechanism as a whole.

[0044] The lock hole assembly 1 includes a lock hole shell 11, which is a barrel structure with a boss. A blind hole 13 is provided on one side of the lock hole shell 11 close to the three-axis air flotation table. The blind hole 13 is used to install the equipment of the three-axis air flotation table. A lock hole 12 is provided on the other side of the lock hole shell 11.

[0045] The locking pin assembly 2 includes an outer shell, an outer telescopic assembly and a locking pin 24. The outer telescopic assembly is arranged inside the outer shell, and the outer telescopic assembly can reciprocate along the outer shell under the action of external force; the locking pin 24 is installed inside the outer telescopic assembly, and a return spring 26 is connected between the outer telescopic assembly and the outer shell for unlocking and resetting the outer telescopic assembly.

[0046] In one or more embodiments, the outer shell includes a first shell 21, a second shell 22, and a bottom cover 23. The second shell 22 is fixedly connected to the first shell 21 and the bottom cover 23 on both sides to form a shell structure, and a bottom cover through hole is provided in the middle of the bottom cover 23. The bottom cover through hole is used to pass the push shaft 29, and the push shaft 29 can move relatively along the bottom cover 23 under external force.

[0047] The second housing 22, the first housing 21 and the bottom cover 23 are all connected by bolts, which is convenient for disassembly and assembly.

[0048] In one or more embodiments, a lock hole guide groove 14 is provided on one side of the lock hole housing 11 close to the lock hole 12 . The lock hole guide groove 14 is a truncated cone structure, and the lock hole 12 is provided at the center of the lock hole guide groove 14 .

[0049] A needle sleeve hole for mounting the locking needle 24 is provided inside the needle sleeve 25 .

[0050] The needle sleeve 25 includes a guide portion 251, a needle sleeve connecting portion 252 and a needle sleeve seat 253 of an integrated structure. One side of the needle sleeve connecting portion 252 is solidified with the needle sleeve seat 253 to form a T-shaped structure. The other end of the needle sleeve connecting portion 252 is connected to the guide portion 251. A through groove 254 is provided inside the guide portion 251, and the through groove 254 is used to pass the locking needle 24. The size of the guide portion 251 matches the size of the locking hole guide groove 14, so that under the action of external force, the guide portion 251 can enter the locking hole guide groove 14, thereby realizing automatic alignment of the locking needle 24 and the locking hole 12.

[0051] The needle sleeve connecting part 252 is a hollow cylindrical structure, and the guide part 251 is a hollow truncated cone structure. The inner hollow cavity of the needle sleeve connecting part 252, the inner hollow cavity of the guide part 251 and the through groove 254 are connected to form a needle sleeve hole.

[0052] The outer telescopic assembly includes a needle sleeve 25, a guide sleeve 27, a push shaft 29 and a buckle unit 210. The outer part of the needle sleeve 25 is sleeved with a return spring 26, and one end of the return spring 26 contacts the inner wall of the No. 1 shell 21, and the other end contacts the needle sleeve seat 253 of the needle sleeve 25; a locking needle 24 is provided in the needle sleeve hole inside the needle sleeve 25, and the locking needle 24 can move relatively along the needle sleeve 25 under external force; a guide sleeve 27 is installed at one end of the needle sleeve 25, and a push shaft 29 and a buckle unit 210 are installed at the end of the guide sleeve 27 away from the needle sleeve 25, and the buckle unit 210 is fixedly sleeved with the push shaft 29 inside the buckle unit 210, and the end of the push shaft 29 extends to the outside of the bottom cover 23; a guide spring 28 is provided between the push shaft 29 and the needle lock 24, and the guide spring 28 is used to ensure that the locking needle is reliably connected to the locking hole.

[0053] The three-axis air-floating platform pin lock mechanism of the present application uses a needle sleeve, a guide sleeve, a buckle unit and a push shaft to form an external telescopic component, and the external telescopic component forms a sliding pair with the outer shell to achieve locking and unlocking. The locking needle, the needle sleeve and the guide sleeve form an internal telescopic sliding pair, and the locking hole and the locking needle are designed to cooperate with the inverted cone surface to achieve self-alignment.

[0054] Preferably, a nut is sleeved on the outside of the push shaft 29, and the nut is located between the bottom cover 23 and the buckle unit 210, and the nut plays a role of limiting.

[0055] The No. 1 shell 21 is a cylindrical structure with one end open, and a No. 1 shell through hole is provided on the side of the No. 1 shell 21 close to the lock hole assembly 1. The outer diameter of the No. 1 shell through hole is larger than the outer diameter of the needle sleeve connecting portion 252 and smaller than the cross-section of the return spring 26, so that the needle sleeve 25 can reciprocate through the No. 1 shell through hole under the combined action of external force and the return spring 26.

[0056] The second shell 22 is a hollow cylindrical structure with flange structures at both ends. A guide platform 223 is symmetrically provided on the inner wall of the second shell 22, and a pair of card slots 221 and button holes 222 are symmetrically provided on the outer wall. The button hole 222 is a through hole for placing the button 2101 in the initial state; the card slot 221 is a through slot for locking the button 2101.

[0057] The guide sleeve 27 includes a guide sleeve seat 271, a guide sleeve body 272 and a guide seat 273. The guide sleeve body 272 and the guide seat 273 are fixedly connected to form a T-shaped structure. The guide seats 273 are symmetrically arranged on the outer wall of the guide sleeve body 272. The guide seats 273 are provided with grooves. After the guide seats 273 and the guide platform 223 are plugged in, they cooperate with each other to guide and limit the guide sleeve 27, effectively ensuring that the lock hole 12 cooperates with the lock needle 24, thereby realizing self-alignment.

[0058] The buckle unit 210 includes a button 2101, an outer cover 2102, a leaf spring mounting seat 2103 and a leaf spring 2104. The outer cover 2102 is a circular ring structure. The leaf spring mounting seat 2103 is fixedly sleeved inside the outer cover 2102. A buckle unit through hole is provided in the middle of the leaf spring mounting seat 2103 for fixedly sleeved the push shaft 29. The leaf spring 2104 is installed on the inner wall of the leaf spring mounting seat 2103. The leaf spring 2104 is fixedly connected to the button 2101, and 2101 is located outside the outer cover 2102. The leaf spring 2104 has a certain rigidity to ensure that the button 2101 can extend out of the outer cover 2102 in an unconstrained state; similarly, the button 2101 can squeeze the leaf spring 2104 under force or constraint, causing it to deform and complete reset.

[0059] Preferably, the leaf spring 2104 is fixed to the leaf spring mounting seat 2103 by screws, and the button 2101 is pre-positioned.

[0060] Preferably, both the outer blocking cover 2102 and the leaf spring mounting seat 2103 are provided with a button through hole for passing the button 2101 .

[0061] The working principle of the buckle unit 210 is as follows: initially the leaf spring 2104 is in a free state, and the button 2101 protrudes from the outer cover 2102. When the buckle unit 210 is installed in the second housing 22, the button 2101 is pressed, and the leaf spring 2104 is deformed by force. In the locked state, that is, when the button 2101 reaches the slot 221, the button 2101 is ejected by the leaf spring 2104 and ejected from the slot 221 of the second housing 22, thereby achieving locking.

[0062] The working principle of the locking needle assembly 2 is:

[0063] External telescopic work: During the working stage, the staff presses the button 2101 with one hand and holds the button shaft 29 with the other hand and pushes it toward the three-axis air floating platform. The button 2101 is initially located at the button hole 222. Under the action of the thrust, the button shaft 29 drives the buckle unit 210, the guide sleeve 27 and the needle sleeve 25 to move axially along the outer shell toward the three-axis air floating platform, so that the guide seat 273 moves along the guide platform 223. When the button 2101 of the buckle unit 210 moves to the slot 221, it is locked; at this time, the return spring 26 is compressed to store energy.

[0064] Internal telescopic work: the needle sleeve 25 passes through the No. 1 shell through hole and continues to move toward the three-axis air floating platform. At this time, the needle lock 24 is first retracted into the guide sleeve 27 after receiving the pressure from one side of the three-axis air floating platform, and compresses the guide spring 28. Since the guide portion 251 of the needle sleeve 25 is a truncated cone structure, that is, a guiding cone surface, when the position of the guide portion 251 and the lock hole guide groove 14 are aligned, the lock needle 24 is aligned with the lock hole 12. Under the action of the guide spring 28, the lock needle 24 bounces into the lock hole 12 to complete the positioning.

[0065] External telescopic operation: When resetting is required, press the button 2101, and the buckle unit 210 returns to its original position under the action of the return spring 26. The button 2101 is designed to be opposite to prevent jamming when pressed. In addition, the two sides of the tail of the push shaft 29 are designed to be flat, which is used to use external tools to reset the lock needle assembly 2 to prevent the lock needle assembly 2 from being slightly deformed during use, resulting in insufficient output force of the return spring 26 and the inability to reset the lock needle assembly 2. The lock needle 24 is unlocked without contacting the lock hole 12, and the return spring 26 releases energy, and the limit is achieved by the nut at the end of the guide sleeve 27.

[0066] The three-way adjustment structure 3 includes a Z-way adjustment portion 31 , a clamping portion 32 and an XY adjustment portion 33 . The clamping portion 32 is fixedly installed on one side of the Z-way adjustment portion 31 . The clamping portion 32 is used to hold the locking needle assembly 2 . The XY adjustment portion 33 is installed at the bottom of the Z-way adjustment portion 31 .

[0067] The Z-direction adjustment portion 31 includes a tension adjustment seat 311 and an adjustment rod 312 . The clamping portion 32 is installed on one side of the tension adjustment seat 311 , and the inside thereof is detachably connected to the adjustment rod 312 .

[0068] The working process is as follows: a bolt is provided on one side of the tension adjustment seat 311, and an adjustment hole is provided inside. The adjustment rod 312 is sleeved inside the adjustment hole. When in use, first loosen the bolt, and adjust the position of the tension adjustment seat 311 on the adjustment rod 312, and then tighten the bolt. At this time, the Z-axis position adjustment of the clamping part 32 is completed.

[0069] The XY adjustment part 33 includes an X-axis adjustment base 331, an X-axis moving plate 332, a Y-axis adjustment base 333, a Y-axis moving plate 334, an X-axis adjustment handle fixing base 335, an X-axis adjustment handle 336, a Y-axis adjustment handle fixing base 337 and a Y-axis adjustment handle 338. The bottom of the X-axis adjustment base 331 is provided with a support column 4 through a connecting piece. The top of the X-axis adjustment base 331 is slidably connected with the X-axis moving plate 332. An X-axis adjustment handle fixing base 335 is fixedly installed on one side of the X-axis adjustment base 331. There is an X-axis adjustment handle 336, which is fixed to the X-axis movable plate 332; a Y-axis adjustment base 333 is fixedly installed above the X-axis movable plate 332, and the Y-axis adjustment base 333 is slidably connected to the Y-axis movable plate 334 above, and a Y-axis adjustment handle fixing seat 337 is fixedly installed on one side of the Y-axis adjustment base 333, and a Y-axis adjustment handle 338 is provided on the Y-axis adjustment handle fixing seat 337, and the Y-axis adjustment handle 338 is fixedly connected to the Y-axis movable plate 334, and the directions of the X-axis adjustment handle 336 and the Y-axis adjustment handle 338 are perpendicular to each other.

[0070] The X-axis adjustment base 331 and the Y-axis adjustment base 333 have the same structure, and the X-axis movable plate 332 and the Y-axis movable plate 334 have the same structure; an adjustment seat guide rail 3311 is provided on the top of the X-axis adjustment base 331, and an adjustment seat fixing plate 3312 is provided on one side, and the direction of the adjustment seat fixing plate 3312 is parallel to the direction of the adjustment seat guide rail 3311, and a long row of holes is provided on the adjustment seat fixing plate 3312, and a movable plate guide rail 3321 is provided at the bottom of the X-axis movable plate 332. After the movable plate guide rail 3321 is plugged into the adjustment seat guide rail 3311, it is slidably connected under the action of external force, and an adjusting bolt 3322 is provided on one side of the X-axis movable plate 332. After one end of the adjusting bolt 3322 passes through the long row of holes of the adjusting seat fixing plate 3312, it is pressed tightly against the X-axis movable plate 332.

[0071] The adjustment process of the XY direction is as follows: the staff member holds the X-direction adjustment handle 336 to drive the X-direction movable plate 332 to move along the X direction, so that the components above the X-direction movable plate 332 move along the X axis; after adjusting to the corresponding position, tighten the adjustment bolt 3322 to fix the X-direction adjustment base 331 and the X-direction movable plate 332; then hold the Y-direction adjustment handle 338 to drive the Y-direction movable plate 334 to move along the Y direction, so that the components above the Y-direction movable plate 334 move along the Y axis; after adjusting to the corresponding position, tighten the adjustment bolt 3322 to fix the Y-direction adjustment base 333 and the Y-direction movable plate 334.

[0072] The working principle of the three-axis air floating table pin locking mechanism is:

[0073] In the initial stage, the relative positions of the lock needle assembly 2 and the lock hole assembly 1 are roughly adjusted by adjusting the three-way adjustment mechanism 3, and the lock needle assembly 2 and the lock hole assembly 1 are adsorbed on the ground by the magnetic suction seat 5; then the staff presses the button 2101 with one hand, and holds the push shaft 29 with the other hand and pushes it toward the three-axis air floating platform. The button 2101 is initially located at the button hole 222. Under the action of the thrust, the push shaft 29 drives the buckle unit 210, the guide sleeve 27 and the needle sleeve 25 to move axially along the outer shell toward the three-axis air floating platform. When the button 2101 of the buckle unit 210 moves to the slot 221, locking is achieved. At this time, the return spring 26 is compressed; the needle sleeve 25 passes through the No. 1 shell through hole and continues to move toward the three-axis air floating platform. At this time, the needle lock 24 is first retracted into the guide sleeve 27 after receiving the pressure from one side of the three-axis air floating platform, and compresses the guide spring 28. When the guide part 251 and the lock hole guide groove 14 are aligned, the lock needle 24 is aligned with the lock hole 12. Under the action of the guide spring 28, the lock needle 24 bounces into the lock hole 12 to complete the positioning; when it is necessary to reset, the staff presses the button 2101, and the buckle unit 210 returns to its original position under the action of the return spring 26. The button 2101 is designed to be on the opposite side to prevent jamming when pressed. In addition, the two sides of the tail of the push shaft 29 are designed to be flat, which is used to use external tools to reset the lock needle assembly 2 to prevent the lock needle assembly 2 from being slightly deformed during use, resulting in insufficient output force of the return spring 26, which makes it impossible to reset the lock needle assembly 2.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Three-axis air-floating platform pin locking mechanism, characterized by: It includes a locking hole assembly, a locking pin assembly, and a three-way adjustment structure. The upper side of the three-way adjustment structure is detachably connected to the locking pin assembly. The locking pin of the locking pin assembly and the locking hole of the locking hole assembly can be automatically aligned. The locking hole assembly is fixed to the main inertia axis position of the three-axis air floating table, and the center of the locking hole is aligned with the spherical center of the three-axis air floating table. The lock hole assembly includes a lock hole shell, which is a barrel-shaped structure with a boss. A blind hole is provided on one side of the lock hole shell close to the three-axis air flotation platform, and the blind hole is used to install the equipment of the three-axis air flotation platform. A lock hole is provided on the other side of the lock hole shell; the lock needle assembly includes an outer shell, an outer telescopic assembly and a lock needle. The outer telescopic assembly is provided inside the outer shell, and the outer telescopic assembly reciprocates along the outer shell under the action of external force; a lock needle is installed inside the outer telescopic assembly, and a return spring is connected between the outer telescopic assembly and the outer shell for unlocking and resetting the outer telescopic assembly; the outer telescopic assembly includes a needle sleeve, a guide sleeve, a push shaft and a buckle unit, and a return spring is connected to the outside of the needle sleeve, and one end of the return spring contacts the inner wall of the No. 1 shell, and the other end contacts the needle sleeve seat of the needle sleeve; a lock needle is provided in the needle sleeve hole inside the needle sleeve, and the lock needle can reciprocate along the outer sleeve under external force The needle sleeve moves relative to each other; a guide sleeve is installed at one end of the needle sleeve, and a push shaft and a buckle unit are installed at the end of the guide sleeve away from the needle sleeve, and the push shaft is fixedly sleeved inside the buckle unit, and the end of the push shaft extends to the outside of the bottom cover; a guide spring is arranged between the push shaft and the needle lock; a lock hole guide groove is arranged on the side of the lock hole assembly close to the lock hole, and the lock hole guide groove is a truncated cone structure, and a lock hole is arranged at the center of the lock hole guide groove; the needle sleeve comprises a guide part, a needle sleeve connecting part and a needle sleeve seat of an integrated structure, one side of the needle sleeve connecting part is consolidated with the needle sleeve seat to form a T-shaped structure, and the other end of the needle sleeve connecting part is connected to the guide part, and a through groove is arranged inside the guide part, and the through groove is used to pass the locking needle; the size of the guide part matches the size of the lock hole guide groove, so that under the action of external force, the guide part can enter the lock hole guide groove, so that the locking needle and the lock hole are automatically aligned; The snap unit includes a button, an outer cover, a leaf spring mounting seat and a leaf spring. The outer cover is a circular ring structure. The leaf spring mounting seat is fixedly sleeved inside the outer cover. A snap unit through hole is provided in the middle of the leaf spring mounting seat for fixing the sleeved button shaft. A leaf spring is installed on the inner wall of the leaf spring mounting seat. The leaf spring is fixedly connected to the button and is located outside the outer cover. The leaf spring has rigidity. A pair of card slots and button holes are symmetrically provided on the outer wall of the outer shell. The button hole is a through hole for placing the button in the initial state, and the card slot is a through slot for locking the button.

2. The three-axis air-floating platform pin locking mechanism according to claim 1 is characterized in that: The outer shell includes shell No. 1, shell No. 2 and bottom cover. The two sides of shell No. 2 are respectively fixed to shell No. 1 and bottom cover to form a shell structure. A bottom cover through hole is provided in the middle of the bottom cover. The bottom cover through hole is used to pass the push shaft, and the push shaft can move relatively along the bottom cover under external force.

3. The three-axis air-floating platform pin locking mechanism according to claim 2 is characterized in that: The No. 1 shell is a cylindrical structure with one end open, and a No. 1 shell through hole is provided on the side of the No. 1 shell close to the lock hole assembly. The outer diameter of the No. 1 shell through hole is larger than the outer diameter of the needle sleeve connecting part and smaller than the cross-section of the return spring.

4. The three-axis air-floating platform pin locking mechanism according to claim 1 is characterized in that: The three-way adjustment structure includes a Z-direction adjustment part, a clamping part and an XY adjustment part. The clamping part is fixedly installed on one side of the Z-direction adjustment part. The clamping part is used to support the locking needle assembly. The XY adjustment part is installed at the bottom of the Z-direction adjustment part.

5. The three-axis air-floating platform pin locking mechanism according to claim 1 is characterized in that: The guide sleeve comprises a guide sleeve seat, a guide sleeve body and a guide seat. The guide sleeve body and the guide seat are fixedly connected to form a T-shaped structure. The outer wall of the guide sleeve body is symmetrically provided with guide seats, and the guide seats are slidably connected to the guide platform on the second shell.

Images