Deflection locking mechanism capable of achieving rapid offset adjustment and stepless load adjustment

Abstract

The invention belongs to the field of aircraft structure design, and particularly relates to a deflection locking mechanism capable of achieving rapid offset adjustment and stepless load adjustment, which comprises an upper lock supporting rod, a lower lock supporting rod, a lock spring, an adjustable gasket and a stop plate, the upper lock supporting rod and the lower lock supporting rod are fixedly connected, the lock spring is connected between the upper lock supporting rod and the lower lock supporting rod, and the adjustable gasket and the stop piece are connected between stop structures of the upper lock supporting rod and the lower lock supporting rod. The thickness of the adjustable gasket can be adjusted; the upper lock supporting rod and the lower lock supporting rod have locking deflection at the mechanism locking position. Due to the combined design of the adjustable gasket and the stop plate, the deflection adjusting time is shortened to the minute level from several hours of a traditional method, and the assembling and debugging efficiency is greatly improved. The two core breakthroughs of rapid and accurate deflection adjustment and continuous stepless load adjustment are realized in the field of aircraft structure design. According to the technical scheme, the problems that a traditional deflection locking mechanism is low in adjusting efficiency, poor in precision and insufficient in reliability are effectively solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aircraft structure design, and particularly relates to a deflection locking mechanism capable of rapid bias adjustment and stepless load adjustment. BACKGROUND

[0002] The bias adjustment of the deflection locking mechanism usually needs to be measured through repeated filing and adjustment of the attitude, so as to ensure the deflection value of the locking mechanism. The deflection value of the mechanism in the installed state and the coverage of the stop surface need to be ensured during the filing operation, and the technical requirements for the operator are very high, the time cost is high, and the risk of scrapped parts is also high.

[0003] In addition, the common installation form of the current large-diameter tension spring is that the spring is directly fixed on the spring connector, the spring force is directly adjusted by rotating the connecting connector, and the number of combined turns of the spring in the spiral groove of the connector is changed to achieve the adjustment. Due to the tangential transition between the combined turns and the working turns, the spiral directions of the combined turns at both ends are consistent.

[0004] When the spring installation pre-tightening force needs to be adjusted, the number of combined turns of the spring at both ends and the connecting connector needs to be adjusted respectively. In order to ensure that the length and the relative angle of the two ends of the connector are unchanged during the adjustment, the spring pre-tightening force can only be adjusted by changing the number of combined turns by half turns.

[0005] Therefore, the spring combined turn number can only be changed by half turns, which causes the spring force value to be unable to be adjusted at will. SUMMARY

[0006] In order to solve the above problems, the present application provides a deflection locking mechanism capable of rapid bias adjustment and stepless load adjustment, so as to solve the problem that the spring force value cannot be adjusted at will in the prior art.

[0007] The technical scheme of the present application is: a deflection locking mechanism capable of rapid bias adjustment and stepless load adjustment, comprising an upper locking strut, a lower locking strut, a locking spring, an adjustable gasket and a stop piece;

[0008] The upper locking strut and the lower locking strut are hingedly connected, the locking spring is connected between the upper locking strut and the lower locking strut, and the adjustable gasket and the stop piece are connected between the stop structures of the upper locking strut and the lower locking strut; the adjustable gasket can be adjusted in thickness.

[0009] The upper locking strut and the lower locking strut have a locking deflection at the locking position of the mechanism, and remain in the locking state under the action of the spring force of the locking spring.

[0010] Preferably, the stop structure comprises a first stop table integrally arranged on the lower locking strut and a second stop table arranged on the upper locking strut, and the first stop table and the second stop table are correspondingly arranged.

[0011] Preferably, the adjustable gaskets and the stop pieces are both two groups and symmetrically arranged between the first stop platform and the second stop platform; the required locking bias is quickly approached by adjusting the thickness of the adjustable gaskets, and then the locking struts and the lower locking struts are stopped by adjusting the stop pieces to each other.

[0012] Preferably, the lock spring is provided with connecting joints and spring seats, the connecting joints are coaxially arranged at two ends of the lock spring, and the spring seats are fixedly connected between the lock spring and the connecting joints.

[0013] Preferably, the lock spring comprises a spring effective circle area and a spring parallel circle area, and the spring parallel circle area is fixedly connected with a group of spring seats; the length of the spring effective circle area can be adjusted by changing the combined circle of the spring seat and the spring parallel circle area.

[0014] Preferably, the spring seat is provided with a spiral groove, and the spring parallel circle area and the spring effective circle area are screwed on the threaded grooves of different spring seats.

[0015] Preferably, the lock spring is rotated to change the combined length of the spring parallel circle area and the spring effective circle area screwed on the spiral groove.

[0016] Preferably, one end of the connecting joint is an ear piece connected with the structure, and the other end is provided with a stop boss.

[0017] Preferably, the outer diameter of the stop boss is smaller than the minimum outer diameter of the limiting spring seat.

[0018] Preferably, the inner hole of the spring seat is a light hole, the outer cylindrical surface of the connecting joint is a light rod, and the spring seat is sleeved on the outer cylindrical surface of the connecting joint to be axially freely movable and circumferentially freely rotatable.

[0019] The deflection locking mechanism of the application can quickly adjust the bias and continuously adjust the load, and has the following advantages:

[0020] The combination design of the adjustable gaskets and the stop pieces shortens the deflection adjustment time from several hours of the traditional method to the minute level, greatly improving the assembly and debugging efficiency. In the field of aircraft structure design, two core breakthroughs of fast and accurate deflection adjustment and continuous load adjustment are realized. The technical scheme effectively solves the problems of low adjustment efficiency, poor accuracy and insufficient reliability of the traditional deflection locking mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an external view of the deflection locking mechanism of the application which can quickly adjust the bias and continuously adjust the load;

[0022] Figure 2 It is a detailed view of the stop platform part of the application;

[0023] Figure 3 This is an external view of the adjustable force spring structure with a constant mounting distance according to this application.

[0024] Figure 4 This is a schematic diagram for debugging and inspection of this application.

[0025] 1. Lower locking strut; 2. Upper locking strut; 1a. First stop plate; 2a. Second stop plate; 3. Locking spring; 3a. Connecting joint; 3b. Spring seat; 3c. Effective coil area of ​​spring; 3d. Coiled coil area of ​​spring; 4. Adjustable shim; 5. Stop plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0027] The first aspect of this application provides a deflection locking mechanism with rapid bias adjustment and stepless load adjustment, such as... Figures 1-3 It includes an upper locking strut 2, a lower locking strut 1, a locking spring 3, an adjustable washer 4, and a stop plate 5;

[0028] The upper locking support rod 2 and the lower locking support rod 1 are hinged together, the locking spring 3 is connected between the upper locking support rod 2 and the lower locking support rod 1, and the adjustable shim 4 and the stop plate 5 are connected between the stop structure of the upper locking support rod 2 and the lower locking support rod 1; the adjustable shim 4 can be adjusted in thickness.

[0029] The upper locking strut 2 and the lower locking strut 1 have locking deflection in the locked position of the mechanism, and remain locked under the spring force of the locking spring 3.

[0030] By adjusting the thickness of the adjustable shim 4, the required offset amount, i.e., the locking deflection, can be quickly achieved when the mechanism is locked. By adjusting the contact of the mutual stop shims, the contact area of ​​the stop table is ensured to guarantee the precise deflection requirements.

[0031] The adjustable shim 4 can be directly replaced to approximate the target deflection, avoiding traditional filing and repeated measurements, and greatly shortening the debugging time; the spring force automatically maintains the locked posture, improving reliability and ease of operation.

[0032] likeFigure 4 As shown, by folding the lower locking strut 1 and the upper locking strut 2, the mechanism is folded to the corresponding working angle as shown in the figure. It should be ensured that all parts of the mechanism rotate flexibly and without jamming within the specified angle during the entire folding process, and that there is no interference between the parts.

[0033] When adjusting the spring force, keep the hole spacing and relative angle of the connectors 3a at both ends of the spring assembly 3 constant. Insert a special tooling into the slot on the spring seat 3b and rotate the spring seat 3b to change the position of the coupling rings between the spring seat 3b and the spring coil at both ends of the assembly, thereby changing the length of the effective coil area 3c of the spring. The spring and spring seat 3b can move on the smooth rod of the connector 3a. When the spring force needs to be reduced, screw the spring seat 3b inward relative to the spring coil; when the spring force needs to be increased, screw the spring seat 3b outward relative to the spring coil.

[0034] The spring seat 3b and the connecting joint 3a are designed separately, and the two are fitted with a clearance fit on the optical axis, which allows the spring length to be steplessly adjusted within a certain range. During the adjustment process, since the spring seat 3b can move freely axially and rotate freely circumferentially on the optical axis of the mounting joint, the initial position and angle of the mounting joint will not be changed.

[0035] Preferably, the stopping structure includes a first stopping platform 1a integrally mounted on the lower locking strut 1 and a second stopping platform 2a integrally mounted on the upper locking strut 2, with the first stopping platform 1a and the second stopping platform 2a correspondingly arranged. The corresponding arrangement of the two stopping platforms can provide a clear and symmetrical mechanical stop when the strut is folded into place, preventing skewing or excessive compression, and improving the repeatability of the locking position and the symmetry of the structure.

[0036] Preferably, there are two sets of adjustable shims 4 and stop plates 5, symmetrically arranged between the first stop platform 1a and the second stop platform 2a. By adjusting the thickness of the adjustable shims 4, the required locking offset can be quickly approached. Subsequently, the stop plates are adjusted to fit together to stop the upper locking support rod 2 and the lower locking support rod 1. Thickness adjustment quickly reduces the error range, and the fitting of the stop plates 5 further eliminates the clearance and ensures the fitting area, achieving micron-level deflection control while reducing the risk of rework due to incomplete processing in a single operation.

[0037] Preferably, the locking spring 3 is provided with a connecting joint 3a and a spring seat 3b. There are two sets of connecting joints 3a, which are coaxially arranged at both ends of the locking spring 3. There are two sets of spring seats 3b, which are respectively fixedly connected between the locking spring 3 and the connecting joint 3a. The spring heads at both ends and the spring seats 3b form a stable force transmission path, ensuring that the spring preload is evenly transmitted to the support rod, and reducing asymmetrical loads or premature failures caused by assembly deviations.

[0038] Preferably, the locking spring 3 includes an effective coil area 3c and a parallel coil area 3d, with the parallel coil area 3d fixedly connected to a set of spring seats 3b. By changing the number of coils connected to the spring seat 3b and the parallel coil area 3d, the length of the effective coil area 3c can be adjusted. By increasing or decreasing the number of coils involved in the operation of the parallel coil area, the effective number of coils can be continuously changed, thus making the spring stiffness and preload continuously adjustable, breaking through the traditional half-turn multiple limitation and meeting the requirements of precise load matching.

[0039] Preferably, the spring seat 3b has a helical groove, and the spring coil area 3d and the effective spring coil area 3c are screwed onto the threaded groove of the different spring seats 3b. The threaded groove provides reliable circumferential positioning, preventing relative sliding of the spring coils during operation that would cause preload drift, and also facilitates intuitive control of the coil position during adjustment.

[0040] Preferably, rotating the locking spring 3 changes the engagement length of the spring coiled area 3d and the effective coiled area 3c on the helical groove. By changing the number of engagement turns between the spring seat 3b at both ends of the assembly and the spring coiled area, the number of engagement turns between the spring and the spring seat 3b is adjusted, thereby achieving the purpose of adjusting the spring length and installation force.

[0041] Preferably, one end of the connecting joint 3a is a lug for connection to the structure, and the other end is provided with a retaining boss. The lug facilitates connection to the external body or hinge, and the retaining boss prevents the spring seat 3b from coming out, improving assembly safety and maintenance convenience.

[0042] Preferably, the outer diameter of the retaining boss is smaller than the minimum outer diameter of the limiting spring seat 3b. This ensures that the spring seat 3b can move freely axially and circumferentially on the joint, without jamming due to an excessively large boss size, thus guaranteeing smooth stepless load adjustment.

[0043] Preferably, the inner hole of the spring seat 3b is a smooth hole, and the outer cylindrical surface of the connecting joint 3a is a smooth rod. The spring seat 3b, when fitted onto the outer cylindrical surface of the connecting joint 3a, can move freely axially and rotate freely circumferentially. The smooth hole and smooth rod eliminate friction constraints, so that the position of the spring seat 3b is determined only by the thread groove and the number of turns. The adjustment process is smooth and without additional resistance, improving the load adjustment accuracy and operating feel.

[0044] During adjustment, the hole spacing of the connecting joints 3a at both ends of the locking spring 3 remains unchanged. The length of the effective coil area 3c of the spring is changed by altering the engagement rings of the spring seats 3b and the spring coils at both ends of the assembly. The spring and spring seats 3b can move on the smooth rod of the connecting joints 3a. When the spring force needs to be reduced, the spring seats 3b are screwed inward relative to the spring coils; when the spring force needs to be increased, the spring seats 3b are screwed outward relative to the spring coils.

[0045] In summary, it has the following advantages:

[0046] The combination of adjustable shims and stop plates reduces deflection adjustment time from hours to minutes, significantly improving assembly and debugging efficiency. This represents a major breakthrough in aircraft structural design, achieving both rapid and precise deflection adjustment and continuous stepless load adjustment. The technology effectively solves the problems of low efficiency, poor accuracy, and insufficient reliability associated with traditional deflection locking mechanisms.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A deflection locking mechanism that can be quickly biased adjusted and infinitely adjusted in load, characterized in that, The device comprises an upper locking strut (2), a lower locking strut (1), a locking spring (3), an adjustable gasket (4) and a stopper (5). The upper locking strut (2) and the lower locking strut (1) are hingedly connected, the locking spring (3) is connected between the upper locking strut (2) and the lower locking strut (1), and the adjustable gasket (4) and the stopper (5) are connected between the stop structures of the upper locking strut (2) and the lower locking strut (1); the adjustable gasket (4) can be adjusted in thickness. The upper locking strut (2) and the lower locking strut (1) have a locking deflection at the mechanism locking position, and are kept in a locked state under the spring force of the locking spring (3).

2. The quick-bias-adjustable and infinitely-load-adjustable deflection locking mechanism of claim 1, wherein, The stop structure comprises a first stop table (1a) integrally arranged on the lower locking strut (1) and a second stop table (2a) arranged on the upper locking strut (2), and the first stop table (1a) and the second stop table (2a) are correspondingly arranged.

3. The quick-bias-adjustable and infinitely-load-adjustable deflection locking mechanism of claim 2, wherein, The adjustable gasket (4) and the stopper (5) are both provided with two groups and are symmetrically arranged between the first stop table (1a) and the second stop table (2a); the thickness of the adjustable gasket (4) is adjusted to quickly approach the required upper locking bias, and then the stoppers are adjusted to abut against each other to stop the upper locking strut (2) and the lower locking strut (1).

4. The quick-bias-adjustable and infinitely-load-adjustable deflection locking mechanism of claim 1, wherein, The locking spring (3) is provided with a connecting joint (3a) and a spring seat (3b), the connecting joint (3a) is coaxially arranged at two ends of the locking spring (3) and has two groups in total, and the spring seat (3b) is fixedly connected between the locking spring (3) and the connecting joint (3a) and has two groups in total.

5. The quick-bias-adjustable and infinitely-load-adjustable deflection locking mechanism of claim 4, wherein, The locking spring (3) comprises a spring effective coil area (3c) and a spring parallel coil area (3d), and the spring parallel coil area (3d) is fixedly connected with a group of spring seats (3b); the length of the spring effective coil area (3c) can be adjusted by changing the combined coil of the spring seat (3b) and the spring parallel coil area (3d).

6. The quick-bias-adjustable and infinitely-load-adjustable deflection locking mechanism of claim 5, wherein, Spiral grooves are formed in the spring seat (3b), and the spring parallel coil area (3d) and the spring effective coil area (3c) are screwed on the threaded grooves of different spring seats (3b).

7. The quick-bias-adjustable and infinitely-load-adjustable deflection locking mechanism of claim 6, wherein, The locking spring (3) is rotated to change the combined length of the spring parallel coil area (3d) and the spring effective coil area (3c) screwed on the spiral grooves.

8. The quick-bias-adjustable and continuously-load-adjustable deflection locking mechanism of claim 4, wherein, One end of the connecting joint (3a) is an ear connected with a structure, and the other end is provided with a stop boss.

9. The quick-bias-adjustable and infinitely-load-adjustable deflection locking mechanism of claim 8, wherein, The outer diameter of the stop boss is smaller than the minimum outer diameter of the limiting spring seat (3b).

10. The quick-bias-adjustable and infinitely-load-adjustable deflection locking mechanism of claim 4, wherein, The inner hole of the spring seat (3b) is a light hole, the outer cylindrical surface of the connecting joint (3a) is a light rod, and the spring seat (3b) is sleeved on the outer cylindrical surface of the connecting joint (3a) to be axially freely movable and circumferentially freely rotatable.

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