Large load-bearing mechanical synchronous linkage unlocking mechanism

Abstract

This invention provides a large-scale load-bearing mechanical synchronous linkage unlocking mechanism, comprising a base plate, a retainer, a top plate, several connecting rods, several blades, and several leaf springs. The beneficial effects of this invention are: the mechanism has the function of locking a threaded clamping rod; the mechanism has a high load-bearing capacity (not less than 10,000 Newtons); the mechanism has a self-locking safety protection measure in the clamped state; the mechanism has a compact space and a design similar to a camera shutter; the mechanism has the functional feature that the unlocking direction and the unlocking unfolding direction are perpendicular to each other.

Description

Technical Field

[0001] This invention belongs to the field of threaded clamping rod unlocking in aerospace applications, and in particular relates to a large-scale load-bearing mechanical synchronous linkage unlocking mechanism. Background Technology

[0002] To meet the requirements of high load-bearing capacity, low impact, and rapid response in the connection and separation of aerospace structural components, when the unlocking operation is achieved by releasing a threaded clamping rod, a specialized clamping unlocking tool is needed to ensure reliable unlocking. This tool requires the unlocking direction to be perpendicular to the pre-tightening direction and also provides the following additional functions:

[0003] 1. Meets installation limitations in confined spaces; 2. Meets operating conditions requiring high preload; 3. Locks and unlocks the clamping rod through purely mechanical movement; 4. Enables simultaneous unlocking of multiple clamping points.

[0004] The existing technology lacks a dedicated clamping and unlocking tool, and the unlocking direction is perpendicular to the pre-tightening direction, making it impossible to achieve the aforementioned additional functions. Therefore, this application proposes a large-scale load-bearing mechanical synchronous linkage unlocking mechanism to meet the installation limitations and unlocking operations in confined spaces, meet the operating conditions with large pre-tightening forces, achieve locking and unlocking of the clamping rod through purely mechanical mechanism movement, and satisfy the synchronous linkage unlocking function of multiple clamping points when they need to be unlocked simultaneously. Summary of the Invention

[0005] In view of this, the present invention aims to provide a large-scale load-bearing mechanical synchronous linkage unlocking mechanism to solve at least one of the problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] A large-scale load-bearing mechanical synchronous linkage unlocking mechanism includes a base plate, a retainer, a top plate, several connecting rods, several blades, and several leaf springs. The base plate is installed at the bottom of the retainer, and the top of the retainer is installed on the top plate. Several connecting rods are uniformly sleeved around the retainer, and the connecting rods form a spatial quincunx structure. One end of each connecting rod is located outside the retainer, and one end of each connecting rod is connected to the retainer through a leaf spring. The other end of each connecting rod passes through the inside of the retainer and is in clearance fit with a blade.

[0008] Furthermore, it also includes several connecting rod pins and several cotter pins. The connecting rod has an L-shaped structure. A first circular hole is opened on the short side of the connecting rod. The first circular hole is used to provide a power source interface for fixing the traction rope. The corner groove of the connecting rod provides an installation interface for the leaf spring. A second circular hole is opened on the long side of the connecting rod near the short side. The second circular hole is used to install the cotter pin. The cotter pin is used to connect the connecting rod and the cage. A third circular hole is opened on the long side of the connecting rod away from the short side. The third circular hole is used to install the connecting rod pin. The connecting rod pin is used to connect the connecting rod and the blade.

[0009] Furthermore, the base plate has a boss structure for mounting a retainer. The base plate has several mounting interfaces evenly spaced around its circumference, which are used in conjunction with screws. The base plate is mounted externally using screws. The base plate has several leaf holes evenly spaced around its circumference in the middle for mounting blades. The base plate also has several stepped holes evenly spaced around its circumference in the middle for mounting adjustment sleeves.

[0010] Furthermore, the retainer is a closed-loop structure, the retainer is clearance-fitted with the boss stop of the base plate, the retainer is clearance-fitted with the connecting rod and the cotter pin, and the outer circumferential of the retainer is provided with several L-shaped grooves, which are used to install leaf springs.

[0011] Furthermore, it also includes several shaft spring retainers, with a groove opened at both the upper and lower ends of each connecting rod pin, and a shaft spring retainer installed in each groove.

[0012] Furthermore, it also includes several adjusting sleeves and several type I hexagonal nuts. Several stepped holes are provided circumferentially on the surfaces of the bottom plate and the top plate. The top of the adjusting sleeve is provided with an external thread. The top of the adjusting sleeve is installed into the stepped hole of the top plate through the type I hexagonal nut. The bottom of the adjusting sleeve is installed into the stepped hole of the bottom plate.

[0013] Furthermore, several blades are arranged in a plum blossom structure, and a boss structure is provided at the bottom of the blade. The bottom of the blade is installed into the blade hole through the boss structure. An internal thread is provided on the inner side of the blade, and the internal thread of the blade is used to engage with the thread of the pressed part.

[0014] Furthermore, it also includes several cotter pins, each with a pin hole, which is used in conjunction with the cotter pin to axially fix the cotter pin.

[0015] Compared with existing technologies, the large-scale load-bearing mechanical synchronous linkage unlocking mechanism of the present invention has the following advantages:

[0016] The present invention discloses a large-scale load-bearing mechanical synchronous linkage unlocking mechanism, which has the function of locking the threaded clamping rod; the mechanism has a large load-bearing (not less than 10,000 Newtons) tensile strength; the mechanism has a self-locking safety protection measure in the clamping state; the mechanism has a compact space and a mechanism design similar to a camera shutter; the mechanism has the functional feature that the unlocking direction and the unlocking unfolding direction are perpendicular to each other. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Connecting rod; 2. Base plate; 3. Cage; 4. Connecting rod pin; 5. Shaft spring retainer; 6. Blade; 7. Adjusting sleeve; 8. Leaf spring; 9. Type I hexagonal nut; 10. Cotter pin; 11. Cotter pin; 12. Top plate. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, a large-scale load-bearing mechanical synchronous linkage unlocking mechanism is disclosed. This invention relates to the field of unlocking with threaded clamping rods. Its distinctive feature is that the unlocking direction of the mechanism is perpendicular to the pre-tightening direction. By driving the blade to rotate around the cotter pin, the cage rotates. During this process, the bottom plate and top plate provide centering support for the cage's rotation. The adjusting sleeve controls the gap between the cage and the bottom and top plates and provides fixed support. The connecting rod pin connects the blade and the connecting rod and is located on the line connecting the center of the cage and the cotter pin, ensuring the mechanism's self-locking. The line connecting the blade positioning protrusion and the connecting pin is perpendicular to the line connecting the center of the cage and the cotter pin, also ensuring the mechanism's self-locking and forming a double safety net. The leaf spring provides the function of locking the clamping rod with the blade and automatically restoring after unlocking.

[0026] To address the aforementioned issues, a large-scale load-bearing mechanical synchronous linkage unlocking mechanism was designed. This mechanism drives the blades to rotate around the cotter pins, which in turn rotates the cage. During this process, the base plate and top plate provide centering support for the cage's rotation. The adjusting sleeve controls the gap between the cage and the base and top plates and provides fixed support. The connecting pin connects the blades and the connecting rod and is positioned on the line connecting the cage center and the cotter pin, ensuring self-locking under pressure. The line connecting the blade positioning protrusion and the connecting pin is perpendicular to the line connecting the cage center and the cotter pin, similarly ensuring self-locking under pressure and forming a double safety mechanism. The leaf spring provides the function of locking the pressed parts with the blades and automatically restoring them after unlocking.

[0027] Link 1, the structure of which is L-shaped, has a round hole on the short side for providing a power source interface for fixing the traction rope, a round hole near the long side for providing an installation interface for the retainer 3 and the cotter pin 11, and a round hole at the far long side for providing an installation interface for the link pin 4 and the blade 6. By pulling the round hole on the short side, link 1 is rotated, which in turn causes the retainer 3 to rotate radially, thereby causing the link pin 4 and the blade 6 to rotate, ultimately unlocking the clamped parts by the blade 6. Link 1 consists of 5 parts of the same shape arranged in a spatial "plum blossom" structure. The corner groove of the "L" structure provides an installation interface for the leaf spring 8. All parts are clearance fit.

[0028] The base plate 2 provides an external mounting interface for the overall mechanism and is fixed and clamped by two M5 screws. It provides axial support for the blade 6. The five small holes evenly distributed in the middle provide mounting interfaces for the blade 6, and the other five large stepped holes provide mounting interfaces for the adjusting sleeve 7. The boss stop of the structure itself provides a mounting interface for the cage 3 and provides radial rotation centering and radial support for the cage 3. All parts are clearance fit.

[0029] The retainer 3 provides an installation interface for the connecting rod 1, the base plate 2, the leaf spring 8, and the cotter pin 11. This part is required to rotate freely and has a clearance fit with the boss stop of the base plate 2, as well as with the connecting rod 1 and the cotter pin 11. The "L"-shaped groove on the outside provides an installation interface for the leaf spring 8.

[0030] The connecting rod pin 4 provides an installation interface for the connecting rod 1 and the blade 6. All parts are clearance fits. The groove in its structure provides an installation interface for the shaft spring retainer 5 and realizes the axial fixation of its own structure.

[0031] A shaft spring retainer 5 is installed in the groove of the connecting rod pin 4 to provide axial fixation for the connecting rod pin 4.

[0032] Blade 6 is the core component of the overall mechanism. It is used for pre-tightening and unlocking of the pressed parts. The inner ring has a threaded structure that mates with the thread of the pressed parts and can form a self-locking fixation. The blade is composed of 5 parts of the same shape arranged in a spatial "plum blossom" structure. The boss on the outer side of the structure provides an installation interface for the base plate 2, and the inner round hole provides an installation interface for the connecting rod pin 4 and the connecting rod 1. All parts are clearance fit.

[0033] Adjusting sleeve 7 provides an installation interface for base plate 2 and top plate 12. The large end is installed in the stepped hole of base plate 2, and the small threaded section is tightened with I-type hexagonal nut 9 to axially fix base plate 2 and top plate 12.

[0034] Leaf spring 8 provides an mounting interface for connecting rod 1 and cage 3. It provides thrust to connecting rod 1 through the plastic deformation of its own material, maintains the radial compression state of the entire mechanism, and after the unlocking action is completed, the elastic force generated by its plastic deformation can automatically restore the structure to the initial compression state.

[0035] Type I hexagonal nut 9, this part is tightened with the adjusting sleeve 7 by its own threads and axially presses the base plate 2.

[0036] Cotter pin 10, which mates with the pin hole of cotter pin 11, is used to axially fix cotter pin 11.

[0037] The cotter pin 11 provides an installation interface for the connecting rod 1, the cage 3 and the cotter pin 10. It achieves axial fixation by engaging with the cotter pin 10 through its own pin hole. All parts are clearance fits.

[0038] The top plate 12 provides mounting interfaces for the cage 3, blade 6 and adjusting sleeve 7. Five small holes evenly distributed in the middle provide mounting interfaces for the blade 6, and five large stepped holes provide mounting interfaces for the adjusting sleeve 7. The boss stop of the structure itself provides mounting interfaces for the cage 3 and provides radial rotation centering and radial support for the cage 3. All parts are clearance fit.

[0039] Drive principle: By pulling the circular hole on the short side of the connecting rod 1, the connecting rod 1 is rotated, which in turn causes the cage 3 to rotate radially, thereby causing the connecting rod pin 4 and the blade 6 to rotate. Ultimately, the blade 6 unlocks the clamped part. During the process, the base plate 2 and the top plate 12 provide centering support for the rotation of the cage 3. The adjusting sleeve 7 controls the gap between the cage 3 and the base plate 2 and the top plate 12 and provides fixed support. The connecting rod pin 4 is used to connect the connecting rod 1 and the blade 6 and is located on the line connecting the center of the cage 3 and the cotter pin 11, ensuring that the mechanism is self-locking in the clamped state. The line connecting the positioning protrusion of the blade 6 and the connecting rod pin 4 is perpendicular to the line connecting the center of the cage 3 and the cotter pin 11, which also ensures that the mechanism is self-locking in the clamped state and forms a double insurance. The leaf spring 8 has the function of locking the clamped part with the blade 6 and automatically restoring after unlocking.

[0040] The beneficial effects of this invention are as follows: It provides a large-scale load-bearing mechanical synchronous linkage unlocking mechanism that can meet the low-impact, fast-response connection and separation requirements between aerospace structural components. The unlocking direction is perpendicular to the pre-tightening direction, which meets the installation restrictions in confined spaces and the use conditions of unlocking operations and large pre-tightening forces. It can achieve locking and unlocking of the clamping rod purely mechanically, and can meet the synchronous linkage unlocking function of multiple clamping points when multiple clamping points need to be unlocked at the same time.

[0041] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A large load bearing mechanical synchronous linkage unlocking mechanism, characterized in that: It includes a base plate (2), a cage (3), a top plate (12), several connecting rods (1), several blades (6) and several leaf springs (8). The bottom of the cage (3) is installed with the base plate (2), and the top of the cage (3) is installed with the top plate (12). The cage (3) is uniformly sleeved with several connecting rods (1) in the circumference. The several connecting rods (1) form a spatial plum blossom structure. One end of each connecting rod (1) is located outside the cage (3), and one end of each connecting rod (1) is connected to the cage (3) through the leaf springs (8). The other end of each connecting rod (1) passes through the inside of the cage (3) and is in clearance fit with a blade (6). It also includes several connecting rod pins (4) and several cotter pins (11). The connecting rod (1) has an L-shaped structure. A first round hole is opened on the short side of the connecting rod (1). The first round hole is used to provide a power source interface for fixing the pulling rope. The corner groove of the connecting rod (1) provides an installation interface for the leaf spring (8). A second round hole is opened on the long side of the connecting rod (1) near the short side. The second round hole is used to install the cotter pin (11). The cotter pin (11) is used to connect the connecting rod (1) and the cage (3). A third round hole is opened on the long side of the connecting rod (1) away from the short side. The third round hole is used to install the connecting rod pin (4). The connecting rod pin (4) is used to connect the connecting rod (1) and the blade (6). The base plate (2) has several stepped holes evenly opened in the middle circumferential direction. The stepped holes of the base plate (2) are used to install the adjusting sleeve (7). By pulling the first circular hole on the short side of the connecting rod (1), the connecting rod (1) is rotated, which in turn causes the retainer (3) to rotate radially, thereby causing the connecting rod pin (4) and the blade (6) to rotate. Finally, the blade (6) unlocks the clamped part. During the process, the base plate (2) and the top plate (12) provide centering support for the rotation of the retainer (3), and the adjusting sleeve (7) controls the gap between the retainer (3) and the base plate (2) and the top plate (12) and provides fixed support. The connecting rod pin (4) is used to connect the connecting rod (1) and the blade (6) and is located on the line connecting the center of the cage (3) and the cotter pin (11) to ensure that the mechanism is self-locking in the clamped state. The line connecting the positioning protrusion of the blade (6) and the connecting rod pin (4) is perpendicular to the line connecting the center of the cage (3) and the cotter pin (11), which also ensures that the mechanism is self-locking in the clamped state and forms a double insurance. The leaf spring (8) plays the role of locking the clamped parts of the blade (6) and automatically restoring after unlocking.

2. A large load carrying mechanical synchronous linkage unlocking mechanism according to claim 1, characterized in that: The base plate (2) is a boss structure, which is used to install the retainer (3). The base plate (2) has several mounting interfaces evenly opened in the circumference. The mounting interfaces are used in conjunction with screws. The base plate (2) is installed externally by screws. The base plate (2) has several leaf holes evenly opened in the circumference in the middle. The leaf holes are used to install blades (6).

3. A large load carrying mechanical synchronous linkage unlocking mechanism according to claim 1, characterized in that: The retainer (3) is a closed-loop structure. The retainer (3) is in clearance fit with the boss stop of the base plate (2). The retainer (3) is in clearance fit with the connecting rod (1) and the cotter pin (11). Several L-shaped grooves are provided on the outer circumference of the retainer (3). The L-shaped grooves are used to install the leaf spring (8).

4. A large load carrying mechanical synchronous linkage unlocking mechanism according to claim 1, characterized in that: It also includes several shaft spring retainers (5), and each of the connecting rod pins (4) has a groove at both the upper and lower ends, and a shaft spring retainer (5) is installed in each groove.

5. A large load carrying mechanical synchronous linkage unlocking mechanism according to claim 1, characterized in that: It also includes several adjusting sleeves (7) and several type I hexagonal nuts (9). Several stepped holes are provided around the surface of the bottom plate (2) and the top plate (12). The top of the adjusting sleeve (7) is provided with an external thread. The top of the adjusting sleeve (7) is installed into the stepped hole of the top plate (12) through the type I hexagonal nuts (9). The bottom of the adjusting sleeve (7) is installed into the stepped hole of the bottom plate (2).

6. A large load carrying mechanical synchronous linkage unlocking mechanism according to claim 1, characterized in that: Several blades (6) form a plum blossom structure. The bottom of the blade (6) is provided with a boss structure. The bottom of the blade (6) is installed into the blade hole through the boss structure. The inner side of the blade (6) is provided with an internal thread. The internal thread of the blade (6) is used to engage with the thread of the pressed part.

7. A large load carrying mechanical synchronous linkage unlocking mechanism according to claim 1, characterized in that: It also includes several cotter pins (10), each cotter pin (11) having a pin hole, the pin hole being used in conjunction with the cotter pin (10), the cotter pin (10) being used to axially fix the cotter pin (11).

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