Collision lock type uplock installed on upper portion of machine body and transmission system

Abstract

The invention belongs to the technical field of aircraft cabin lock mechanism design, and particularly relates to a collision lock type uplock installed on the upper portion of a fuselage and a transmission system. The collision lock type uplock comprises a lock body, a transmission shaft set, a driving device and a monitoring device; the lock body comprises a lock clamping plate, a lock key retaining spring, a lock hook reset spring, a limiting pin shaft, a lock hook and a lock key, the lock clamping plate is fixed to the machine body, one end of the lock hook is hinged to the lock clamping plate, the other end of the lock hook is connected with the lock hook reset spring, and the lock hook reset spring enables the lock hook to abut against the limiting pin shaft; one end of the lock key is hinged to the lock clamping plate and driven by the transmission shaft set to rotate, the other end of the lock key abuts against the lock hook through the lock key maintaining spring, during locking, the lock hook is pushed by the lock ring to rotate to hook the lock ring, the lock key slides along the surface of the lock hook and enters the locking curved surface of the lock hook, and the lock ring is prevented from disengaging from the lock hook. During unlocking, the transmission shaft drives the lock key to rotate to be separated from the locking curved surface of the lock hook, and the lock ring is separated from the lock hook.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft cabin lock mechanism design, and in particular relates to a collision-lock type upper lock and a transmission system installed on the upper part of the fuselage. Background Art

[0002] Aircraft doors, especially those opened in the air, are mainly used for cargo delivery to ensure the continuity of the fuselage opening. The upper lock is the main locking device for opening the door. The current main background is as follows:

[0003] 1. The upper lock must be able to lock safely and reliably to ensure the safety of locking;

[0004] 2. The hatch that is opened in the air must have a certain compensation capacity to ensure the reliability of locking;

[0005] 3. For the upper lock installed on the upper part of the fuselage, it is necessary to ensure that the drive system will not be unlocked under the action of gravity;

[0006] 4. The upper lock and transmission system need to have reliable status monitoring measures. Summary of the invention

[0007] In order to solve the above problems, the present application provides a collision lock type upper lock and a transmission system installed on the upper part of the fuselage, including: a lock body, a transmission shaft group, a driving device, and a monitoring device;

[0008] The lock body comprises: a lock clamp, a lock key holding spring, a lock hook reset spring, a limit pin shaft, a lock hook and a lock key. The lock clamp is fixed to the body, one end of the lock hook is hinged on the lock clamp, and the other end is connected to the lock hook reset spring. The lock hook reset spring makes the lock hook close to the limit pin shaft; one end of the lock key is hinged on the lock clamp and driven to rotate by the transmission shaft group, and the other end is close to the lock hook through the lock key holding spring. When locking, the lock hook is pushed by the lock ring to rotate and hook the lock ring, and the lock key slides along the surface of the lock hook and enters the locking curved surface of the lock hook, limiting the lock ring from coming out of the lock hook; when unlocking, the transmission shaft drives the lock key to rotate and disengage from the locking curved surface of the lock hook, and the lock ring comes out of the lock hook;

[0009] The driving device is connected to the transmission shaft group and is used to drive the transmission shaft group to rotate; the monitoring device is connected to the transmission shaft group and is used to display the unlocking and locking states of the lock body.

[0010] Preferably, each lock body has two locking plates, which are arranged in parallel to form a sandwich assembly space, and the limit pin, lock hook and lock key are all located in the sandwich assembly space.

[0011] Preferably, the driving device includes an actuator mounting support and a driving actuator, the fixed end of the driving actuator is mounted on the actuator mounting support, and the movable end is connected to the driving rocker arm of the transmission shaft assembly, and when the driving actuator is in a retracted state, the lock body is in a locked state.

[0012] Preferably, it also includes a gravity resistance spring, one end of which is connected to the fixed end of the driving cylinder, and the other end is connected to the movable end. The gravity resistance spring is in a stretched state, so that the driving cylinder has a contraction preload.

[0013] Preferably, the monitoring device has a switch assembly, which has a switch drive rocker arm; a switch contact is provided on the transmission shaft group, and when the transmission shaft group rotates, it pushes the switch drive rocker arm, and the movement of the switch drive rocker arm causes the switch signal of the switch assembly to be connected or disconnected.

[0014] Preferably, the lock body comprises two lock bodies, which are arranged at both ends of the transmission shaft assembly.

[0015] Preferably, the driving device comprises one and is located in the middle of the transmission shaft assembly, and the monitoring devices comprise two and are located between the lock body and the driving device.

[0016] Preferably, the transmission shaft group includes: 2 groups of end transmission shafts, 2 groups of switch contact mounting shafts and 1 group of actuator mounting shaft, the end transmission shafts are located at both ends of the transmission shaft group, the 2 groups of switch contact mounting shafts are respectively fixedly installed between the actuator mounting shaft and the end transmission shafts, the end transmission shafts are connected to the lock key, the switch contact is fixed on the switch contact mounting shaft, and the driving actuator is connected to the actuator mounting shaft through a driving rocker arm.

[0017] Preferably, the lock hook reset springs include two, which are symmetrically distributed on the outer sides of the two lock clamping plates.

[0018] Preferably, the lock clamp is provided with a groove for the movement of the lock key to facilitate the movement of the lock key.

[0019] Preferably, the locking clamp is provided with a guide plane of the locking ring, which can guide the locking ring to a locking position.

[0020] The present application can achieve safe and reliable locking, ensure the safety of locking, ensure that the drive system will not unlock under the action of gravity, and have reliable status monitoring measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a collision-lock type upper lock and a transmission system installed on the upper part of the fuselage in a preferred embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the implementation of this application will be described in more detail in combination with the drawings in the implementation of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and cannot be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in combination with the drawings.

[0023] The present application provides a collision lock type upper lock and transmission system installed on the upper part of the fuselage, including: a lock body, a transmission shaft group, a driving device, and a monitoring device;

[0024] The lock body comprises: a locking plate 1.1, a lock key holding spring 1.2, a lock hook reset spring 1.3, a limit pin 1.6, a lock hook 1.4 and a lock key 1.5. The locking plate 1.1 is fixed to the body. One end of the lock hook 1.4 is hinged to the locking plate 1.1, and the other end is connected to the lock hook reset spring 1.3. The lock hook reset spring 1.3 makes the lock hook 1.4 close to the limit pin 1.6. One end of the lock key 1.5 is hinged to the locking plate 1.1. 1, and driven to rotate by the transmission shaft group, and the other end is kept close to the lock hook 1.4 by the lock key 1.5. When locking, the lock hook 1.4 is pushed by the lock ring to rotate and hook the lock ring, and the lock key 1.5 slides along the surface of the lock hook 1.4 and enters the locking surface of the lock hook 1.4, restricting the lock ring from escaping from the lock hook 1.4; when unlocking, the transmission shaft drives the lock key 1.5 to rotate and disengage from the locking surface of the lock hook 1.4, and the lock ring is escaping from the lock hook 1.4;

[0025] The driving device is connected to the transmission shaft group and is used to drive the transmission shaft group to rotate; the monitoring device is connected to the transmission shaft group and is used to display the unlocking and locking states of the lock body.

[0026] In some optional embodiments, each lock body has two locking plates 1.1, which are arranged in parallel to form a sandwich assembly space, and the limit pin 1.6, lock hook 1.4 and lock key 1.5 are all located in the sandwich assembly space.

[0027] In some optional embodiments, the driving device includes an actuator mounting support 4.2 and a driving actuator 4.1. The fixed end of the driving actuator 4.1 is mounted on the actuator mounting support 4.2, and the movable end is connected to the driving rocker arm 2.5 of the transmission shaft assembly. When the driving actuator 4.1 is in a retracted state, the lock body is in a locked state.

[0028] In some optional embodiments, a gravity resistance spring 4.4 is further included, one end of which is connected to the fixed end of the driving cylinder 4.1, and the other end is connected to the movable end. The gravity resistance spring 4.4 is in a stretched state, so that the driving cylinder 4.1 has a contraction preload.

[0029] In some optional embodiments, the monitoring device has a switch assembly 3.2, and the switch assembly 3.2 has a switch drive rocker arm 3.1; the transmission shaft group has a switch contact 2.3, and when the transmission shaft group rotates, it pushes the switch drive rocker arm 3.1, and the movement of the switch drive rocker arm 3.1 causes the switch signal of the switch assembly 3.2 to be connected or disconnected.

[0030] In some optional embodiments, the lock body includes two lock bodies, which are arranged at both ends of the transmission shaft group.

[0031] In some optional embodiments, the driving device includes one and is located in the middle of the transmission shaft assembly, and the monitoring devices include two and are located between the lock body and the driving device.

[0032] In some optional embodiments, the transmission shaft group includes: 2 groups of end transmission shafts 2.1, 2 groups of switch contact mounting shafts 2.2 and 1 group of actuator mounting shaft 2.4, the end transmission shafts 2.1 are located at both ends of the transmission shaft group, the 2 groups of switch contact mounting shafts 2.2 are respectively fixedly installed between the actuator mounting shaft 2.4 and the end transmission shaft 2.1, the end transmission shaft 2.1 is connected to the lock key 1.5, the switch contact 2.3 is fixed on the switch contact mounting shaft 2.2, and the driving actuator 4.1 is connected to the actuator mounting shaft 2.4 through the driving rocker arm 2.5.

[0033] In some optional embodiments, the lock hook reset springs 1.3 include two, which are symmetrically distributed on the outer sides of the two lock clamping plates 1.1.

[0034] In some optional embodiments, the lock clamping plate 1.1 is arranged with a groove for the movement of the lock key 1.5 to facilitate the movement of the lock key 1.5.

[0035] In some optional embodiments, the locking clamp plate 1.1 is arranged with a guide plane of the locking ring, which can guide the locking ring to the locking position.

[0036] The present application can achieve safe and reliable locking, ensure the safety of locking, ensure that the drive system will not unlock under the action of gravity, and have reliable status monitoring measures.

[0037] The closing process of the upper lock: when the lock ring hits the lock hook 1.4, the lock hook 1.4 overcomes the force of the lock hook reset spring 1.3 under the action of the contact force and gradually moves away from the limit pin 1.6. When the hooking plane of the lock hook moves to an angle of 87° with the movement trajectory of the lock ring, the lock key 1.5 approaches the locking surface of the lock hook 1.4 under the action of the lock key holding spring 1.2 until the lock key 1.5 and the lock hook 1.4 are stuck. The movement of the lock key 1.5 drives the end transmission shaft 2.1, the contact installation transmission shaft 2.2, and the actuator installation transmission shaft 2.4 to rotate, and the electric switch contact 2.3 and the electric switch rocker arm 3.1 gradually disengage. The contact force between the electric switch contact 2.3 and the rocker arm 3.1 makes the rocker arm 3.1 gradually approach the electric switch 3.2 button, and the electric switch is turned on, indicating that the cabin door is locked. At this time, the actuator 4.1 is kept in the retracted position under the action of the gravity resistance spring 4.4.

[0038] The upper lock opening process: the driving actuator 4.1 starts to extend under the action of hydraulic pressure to overcome the action of gravity resistance spring 4.4, and the front end of the actuator 4.1 presses the driving rocker arm 2.5, driving the rocker arm 2.5 to rotate the transmission shaft system, and drives the lock key 1.5 through the action of the key shaft to overcome the action of the lock key holding spring 1.2 and gradually move away from the lock hook 1.4. When the lock key 1.5 is completely out of the locking position of the lock hook 1.4, the electric switch contact 2.3 installed on the transmission shaft 2.2 gradually rotates, and the contact force between the electric switch contact 2.3 and the rocker arm 3.1 causes the rocker arm 3.1 to gradually move away from the electric switch 3.2 button, and the electric switch signal is disconnected. At this time, the lock hook 1.4 rotates and opens under the action of the lock hook reset spring 1.3, and when the lock hook 1.4 contacts the limit pin shaft 1.6, the lock hook 1.4 is fully opened.

[0039] The lock clamping plate 1.1 is provided with a groove for the movement of the lock key 1.5, so as to facilitate the movement of the lock key 1.5.

[0040] The locking clamping plate 1.1 is provided with a guide plane of the locking ring, which can guide the locking ring to a locking position.

[0041] The end transmission shaft 2.1 and the lock key 1.5 are keyed shafts, a spline hole is arranged on the lock key 1.5, and a spline shaft is arranged on the end transmission shaft 2.1.

[0042] The installation position of the upper lock and the transmission system is not limited to the upper part of the aircraft fuselage, and can be installed and locked on the upper part of any rotating rising component.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A strike-lock upper lock and transmission system installed on the upper part of the fuselage, characterized in that: include: It includes a lock body, a transmission shaft group, a driving device, and a monitoring device; The lock body comprises: a lock clamp plate (1.1), a lock key holding spring (1.2), a lock hook reset spring (1.3), a limit pin shaft (1.6), a lock hook (1.4) and a lock key (1.5); the lock clamp plate (1.1) is fixed to the machine body; one end of the lock hook (1.4) is hinged to the lock clamp plate (1.1) and the other end is connected to the lock hook reset spring (1.3); the lock hook reset spring (1.3) makes the lock hook (1.4) close to the limit pin shaft (1.6); one end of the lock key (1.5) is hinged to the lock clamp plate (1.1), and driven to rotate by the transmission shaft group, and the other end is kept close to the lock hook (1.4) by the lock key (1.5). When locking, the lock hook (1.4) is pushed by the lock ring to rotate and hook the lock ring, and the lock key (1.5) slides along the surface of the lock hook (1.4) and enters the locking curved surface of the lock hook (1.4), limiting the lock ring from coming out of the lock hook (1.4); when unlocking, the transmission shaft drives the lock key (1.5) to rotate and disengage from the locking curved surface of the lock hook (1.4), and the lock ring comes out of the lock hook (1.4); The driving device is connected to the transmission shaft group and is used to drive the transmission shaft group to rotate; the monitoring device is connected to the transmission shaft group and is used to display the unlocking and locking states of the lock body.

2. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 1, characterized in that: Each lock body has two locking plates (1.1), which are arranged in parallel to form a sandwich assembly space, and the limit pin (1.6), the lock hook (1.4) and the lock key (1.5) are all located in the sandwich assembly space.

3. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 1, characterized in that: The driving device comprises an actuator mounting support (4.2) and a driving actuator (4.1). The fixed end of the driving actuator (4.1) is mounted on the actuator mounting support (4.2), and the movable end is connected to a driving rocker arm (2.5) of the transmission shaft assembly. When the driving actuator (4.1) is in a retracted state, the lock body is in a locked state.

4. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 3, characterized in that: It also includes a gravity resistance spring (4.4), one end of which is connected to the fixed end of the driving cylinder (4.1), and the other end is connected to the movable end. The gravity resistance spring (4.4) is in a stretched state, so that the driving cylinder (4.1) has a contraction preload force.

5. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 4, characterized in that: The monitoring device comprises an electric switch assembly (3.2), and the electric switch assembly (3.2) comprises an electric switch driving rocker arm (3.1); a transmission shaft assembly is provided with an electric switch contact (2.3), and when the transmission shaft assembly rotates, the electric switch driving rocker arm (3.1) is pushed, and the movement of the electric switch driving rocker arm (3.1) causes the electric switch signal of the electric switch assembly (3.2) to be connected or disconnected.

6. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 5, characterized in that: The lock body comprises two parts, which are arranged at two ends of the transmission shaft group.

7. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 6, characterized in that: The driving device comprises one and is located in the middle of the transmission shaft group, and the monitoring devices comprise two and are located between the lock body and the driving device.

8. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 7, characterized in that: The transmission shaft group comprises: two groups of end transmission shafts (2.1), two groups of switch contact mounting shafts (2.2) and one group of actuator mounting shaft (2.4); the end transmission shafts (2.1) are located at both ends of the transmission shaft group; the two groups of switch contact mounting shafts (2.2) are respectively fixedly mounted between the actuator mounting shaft (2.4) and the end transmission shaft (2.1); the end transmission shaft (2.1) is connected to a lock key (1.5); the switch contact (2.3) is fixed on the switch contact mounting shaft (2.2); and the driving actuator (4.1) is connected to the actuator mounting shaft (2.4) via a driving rocker arm (2.5).

9. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 2, characterized in that: The lock hook reset springs (1.3) include two, which are symmetrically distributed on the outer sides of the two lock clamping plates (1.1).

10. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 1, characterized in that: The lock clamping plate (1.1) is provided with a groove for the lock key (1.5) to move, so as to facilitate the movement of the lock key (1.5).

11. The strike-lock type upper lock and transmission system installed on the upper part of the fuselage as claimed in claim 1, characterized in that: The locking clamping plate (1.1) is provided with a guide plane of the locking ring, which can guide the locking ring to a locking position.

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