Manipulator system rocker arm release mechanism

Abstract

The application belongs to the field of aircraft mechanism design, and particularly relates to a control system rocker arm disengaging mechanism. The control system rocker arm disengaging mechanism has a linkage state and a disengaging state. In the linkage state, a push rod is in a retracted position, two spring small rocker arms make the second circular arc surface of a concave rotating shaft contact and be clamped with the first circular arc surface on both sides of the second end of an inner rocker arm under the pulling force of the spring, so that the inner rocker arm and an outer rocker arm can be integrated when swinging to form linkage. In the disengaging state, the push rod pushes two push rod small rocker arms to rotate, two concave rotating shafts drive two spring small rocker arms to rotate respectively, so that the spring is elongated. When the spring crosses the maximum elongation length, the two spring small rocker arms are reversed to the upper side. Under the pulling force of the spring, the concave rotating shaft rotates to a predetermined position, so that the inner rocker arm can freely swing in the sector groove of the outer rocker arm and disengage from each other. The application is convenient to disengage, and smooth and smooth movement after disengagement will not cause interference.

Description

A rocker arm disengagement mechanism for a control system Technical Field

[0001] This application belongs to the field of aircraft mechanism design, and specifically relates to a rocker arm disengagement mechanism for a control system. Background Technology

[0002] The control system rocker arm disengagement mechanism is a crucial component designed to isolate and disengage mechanisms linked to the aircraft control system's input and output when a jamming failure occurs. Traditional control system disengagement mechanisms are shear pin-type, using force to cut the pin to disengage the mechanisms. However, once the shear pin breaks, the break point cannot guarantee complete contact, leading to uneven movement of the mechanism after shearing. Furthermore, the broken shear pin is unusable and requires replacement.

[0003] Therefore, it is desirable to have a technical solution to overcome or at least mitigate one of the aforementioned defects of the prior art. Summary of the Invention

[0004] The purpose of this application is to provide a rocker arm disengagement mechanism for a control system, in order to solve the problems of the existing shear pin type disengagement mechanism, which has issues such as the mechanism not moving smoothly after disengagement and the shear pin becoming unusable after breakage, requiring replacement with a new part.

[0005] The technical solution of this application is:

[0006] A rocker arm disengagement mechanism for a control system, comprising:

[0007] An inner rocker arm, the first end of which is hinged to the input pull rod and the output pull rod respectively, the second end of which is provided with a first arc surface on both sides, and the middle of which is provided with a first mounting hole;

[0008] An outer rocker arm, the first end of which is hinged to a linkage rod, and two rotating holes are provided near the first end of the outer rocker arm. The second end of the outer rocker arm is provided with a second mounting hole. A fan-shaped groove that can cooperate with the second end of the inner rocker arm is provided on the outer rocker arm.

[0009] A bracket is provided with a double-ear connecting part, and the inner rocker arm and the outer rocker arm are hingedly mounted on the bracket by hinge bolts and hinge nuts;

[0010] Two concave rotating shafts are respectively rotatably installed in the rotating holes of the outer rocker arm, and a second arc surface is provided in the middle of the concave rotating shaft;

[0011] The spring rocker arm includes two, which are respectively fixedly connected to the first end of the corresponding concave rotating shaft by a pin, and the two spring rocker arms are connected by a spring.

[0012] The push rod small rocker arm includes two, which are respectively fixedly connected to the second end of the corresponding concave rotating shaft by a pin;

[0013] An electromagnet is fixedly mounted on the outer rocker arm, and a push rod is mounted on the electromagnet.

[0014] The rocker arm disengagement mechanism of the control system has a linked state and a disengaged state.

[0015] In the linkage state, the push rod is in the retracted position. Under the tension of the spring, the two spring rocker arms cause the second arc surface of the concave rotating shaft to contact and engage with the first arc surface on both sides of the second end of the inner rocker arm, so that the inner rocker arm and the outer rocker arm can become one when swinging, forming a linkage.

[0016] When disengaged, the push rod drives the two push rod small rocker arms to rotate, and the two concave rotating shafts drive the two spring small rocker arms to rotate, causing the springs to stretch. When the springs exceed their maximum stretch length, the two spring small rocker arms reverse to the upper side. Under the tension of the springs, the concave rotating shafts rotate to the predetermined position, allowing the inner rocker arm to swing freely within the fan-shaped groove of the outer rocker arm and disengage from each other.

[0017] In at least one embodiment of this application, the inner rocker arm is provided with a weight reduction hole.

[0018] In at least one embodiment of this application, the outer rocker arm is provided with a first limiting block and a second limiting block. In the linkage state, the first limiting block and the second limiting block can limit the two spring rocker arms.

[0019] In at least one embodiment of this application, the outer rocker arm is provided with a third limiting block and a fourth limiting block. When disengaged, the third limiting block and the fourth limiting block can limit the two push rod small rocker arms.

[0020] In at least one embodiment of this application, the bracket further includes a base for positioning the bracket.

[0021] In at least one embodiment of this application, the concave rotating shaft has a semi-cylindrical shape in the middle, and the bottom surface of the concave rotating shaft is adapted to the bottom surface of the fan-shaped groove of the outer rocker arm.

[0022] The invention has at least the following beneficial technical effects:

[0023] The rocker arm disengagement mechanism of the control system of this application adopts two nested hinged inner and outer rocker arms. The inner and outer rocker arms can be switched between linked and disengaged states through two concave rotating shafts on the outer rocker arm. In the linked state, the two rocker arms can move together without gap. In the disengaged state, the two rocker arms do not contact each other, the movement is smooth and does not affect each other, and the disengagement operation is convenient. After the disengagement mechanism is reset, no parts need to be replaced and it can be reused. Attached Figure Description

[0024] Figure 1 is an angle view of the rocker arm disengagement mechanism of a control system according to an embodiment of this application;

[0025] Figure 2 is another angle view of the rocker arm disengagement mechanism of the control system according to one embodiment of this application;

[0026] Figure 3 is an axial view of the inner rocker arm according to one embodiment of this application;

[0027] Figure 4 is an axial view of the external rocker arm according to one embodiment of this application;

[0028] Figure 5 is a front view of the external rocker arm according to one embodiment of this application;

[0029] Figure 6 is an axial view of a concave rotating shaft according to one embodiment of this application;

[0030] Figure 7 is a schematic diagram of the linkage state of the rocker arm disengagement mechanism of the control system according to one embodiment of this application;

[0031] Figure 8 is a schematic diagram of the disengaged state of the rocker arm disengagement mechanism of the control system according to one embodiment of this application.

[0032] in:

[0033] 1-Inner rocker arm; 2-Bracket; 3-Outer rocker arm; 301-First limit block; 302-Second limit block; 303-Third limit block; 304-Fourth limit block; 4-Spring rocker arm; 5-Spring; 6-Input pull rod; 7-Output pull rod; 8-Hinge bolt; 9-Linkage pull rod; 10-Electromagnet; 11-Push rod; 12-Push rod rocker arm; 13-Concave rotating shaft; 14-Hinge nut. Detailed Implementation

[0034] 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 some, but not all, 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 creative 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.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limiting the scope of protection of this application.

[0036] The present application will now be described in further detail with reference to Figures 1 to 8.

[0037] This application provides a rocker arm disengagement mechanism for a control system, including: an inner rocker arm 1, an outer rocker arm 3, a bracket 2, two concave rotating shafts 13, two spring-loaded small rocker arms 4, two push rod small rocker arms 12, an electromagnet 10, and a push rod 11.

[0038] Specifically, as shown in Figure 3, the first end of the inner rocker arm 1 has two hinged parts for connecting with the input pull rod 6 and the output pull rod 7 respectively. The second end of the inner rocker arm 1 has two first arc surfaces on both sides for engaging with the concave rotating shaft 13. The middle of the inner rocker arm 1 has a first mounting hole for connecting with the outer rocker arm 3 and the bracket 2. It can be understood that in this embodiment, the inner rocker arm 1 has weight-reduction holes.

[0039] As shown in Figures 4-5, the first end of the outer rocker arm 3 has a double-ear structure, which can be hinged to the linkage rod 9. Two rotating holes for mounting the concave rotating shaft 13 are opened near the first end of the outer rocker arm 3. The second end of the outer rocker arm 3 has a second mounting hole. The outer rocker arm 3 has a fan-shaped groove that can cooperate with the second end of the inner rocker arm 1. The width of the fan-shaped groove of the outer rocker arm 3 is greater than the thickness of the inner rocker arm 1, and the radius of the fan-shaped groove is greater than the radius of the inner rocker arm 1, so that the inner rocker arm 1 can pass through without interference. Furthermore, the outer rocker arm 3 is provided with a first limiting block 301 and a second limiting block 302. In the linkage state, the first limiting block 301 and the second limiting block 302 can limit the two spring rocker arms 4. By locking the two spring rocker arms 4 in a fixed position, the concave rotating shaft 13 is prevented from rotating, ensuring that the arc surface of the concave rotating shaft 13 and the arc surface of the inner rocker arm 1 are in stable contact without gaps. The outer rocker arm 3 is provided with a third limiting block 303 and a fourth limiting block 304. In the disengaged state, the third limiting block 303 and the fourth limiting block 304 can limit the two push rod rocker arms 12. By locking the two push rod rocker arms 12 in a fixed position, the concave rotating shaft 13 is prevented from rotating, ensuring that the groove of the concave rotating shaft 13 is fixed at the position where the inner rocker arm 1 can just swing through, so that the relative movement is contactless.

[0040] The bracket 2 is provided with a double-ear connecting part, and the inner rocker arm 1 and the outer rocker arm 3 are hinged together on the bracket 2 by the hinge bolt 8 and the hinge nut 14, and rotate together around the hinge bolt 8; the bracket 2 also includes a base for positioning the bracket 2.

[0041] Two concave rotating shafts 13 are rotatably installed in the rotating holes of the outer rocker arm 3, and a second arc surface is provided in the middle of the concave rotating shaft 13. Two spring rocker arms 4 are fixedly connected to the first end of the corresponding concave rotating shaft 13 by pins, and the two spring rocker arms 4 are connected by springs 5; two push rod rocker arms 12 are fixedly connected to the second end of the corresponding concave rotating shaft 13 by pins. In the preferred embodiment of this application, as shown in FIG6, the middle part of the concave rotating shaft 13 is semi-cylindrical, and the bottom surface of the middle part of the concave rotating shaft 13 is adapted to the bottom surface of the fan-shaped groove of the outer rocker arm 3.

[0042] Furthermore, the electromagnet 10 and the push rod 11 constitute a disengagement triggering device. The electromagnet 10 is fixedly mounted on the outer rocker arm 3, and the push rod 11 is mounted on the electromagnet 10. It is understood that the electromagnet 10 and the push rod 11, which serve as the disengagement triggering device, can also be replaced with a manual triggering device or a pyrotechnic triggering device.

[0043] The rocker arm disengagement mechanism of the control system in this application has a linked state and a disengaged state, wherein...

[0044] In the linkage state, push rod 11 is in the retracted position. Under the tension of spring 5, the two small spring rocker arms 4 cause the second arc surface of the concave rotating shaft 13 to contact and engage with the first arc surfaces on both sides of the second end of the inner rocker arm 1, as shown in Figure 7. This allows the inner rocker arm 1 and the outer rocker arm 3 to become one unit during swinging, forming a linkage state. The first limiting block 301 and the second limiting block 302 on the outer rocker arm 3 hold the two small spring rocker arms 4 in a fixed position, preventing the concave rotating shaft 13 from continuing to rotate. This ensures that the arc surface of the concave rotating shaft 13 is in stable contact with the arc surfaces on both sides of the end of the inner rocker arm 1, and no longer rotates. At this time, pushing and pulling the input pull rod 6 can drive the output pull rod 7 to perform a push-pull movement, and at the same time, drive the linkage pull rod 9 to perform a push-pull movement.

[0045] When the linkage mechanism driven by the linkage lever 9 malfunctions and jams, the rocker arm disengagement mechanism of the control system is placed in the disengaged state. In the disengaged state, the push rod 11 pushes the two push rod small rocker arms 12 to rotate, and the two concave rotating shafts 13 respectively drive the two spring small rocker arms 4 to rotate, causing the spring 5 to stretch. When the spring 5 crosses the maximum stretch length, the two spring small rocker arms 4 reverse to the upper side. Under the tension of the spring 5, the concave rotating shaft 13 rotates until the inner rocker arm 1 can swing freely in the fan-shaped groove of the outer rocker arm 3, forming the disengaged state, as shown in Figure 8. The third limiting block 303 and the fourth limiting block 304 on the outer rocker arm 3 hold the two push rod small rocker arms 12 in a fixed position, preventing the concave rotating shaft 13 from continuing to rotate, and ensuring that the groove of the concave rotating shaft 13 is fixed at the position where the inner rocker arm 1 can just swing through. In this state, the radius of the inner rocker arm 1 is smaller than the radius of the fan-shaped groove of the outer rocker arm 3, so that the inner rocker arm 1 and the outer rocker arm 3 have no contact during relative movement. At this time, the input lever 6 can drive the output lever 7 to push and pull, but the outer rocker arm 3 is disengaged from the inner rocker arm 1. The inner rocker arm 1 swings freely in the fan-shaped groove of the outer rocker arm 3 and will not be affected by the jamming of the linkage mechanism associated with the linkage lever 9.

[0046] The rocker arm disengagement mechanism of this application provides seamless motion transmission between the rocker arms during linkage, facilitates disengagement, and ensures complete contact between the rocker arms after disengagement, resulting in smooth and uninterrupted movement. After troubleshooting, it can be reused repeatedly without replacing any parts. This application features an ingenious and easily implemented structure.

[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 rocker arm disengagement mechanism for a control system, characterized in that, include: The inner rocker arm (1) has its first end hinged to the input pull rod (6) and the output pull rod (7) respectively. The second end of the inner rocker arm (1) has a first arc surface on both sides. The middle part of the inner rocker arm (1) has a first mounting hole. The outer rocker arm (3) has its first end hinged to the linkage pull rod (9). Two rotating holes are provided near the first end of the outer rocker arm (3). The second end of the outer rocker arm (3) has a second mounting hole. The outer rocker arm (3) has a fan-shaped part that can cooperate with the second end of the inner rocker arm (1). The bracket (2) has a double-eared connecting part, and the inner rocker arm (1) and the outer rocker arm (3) are hinged together on the bracket (2) by hinge bolts (8) and hinge nuts (14); two concave rotating shafts (13) are respectively rotatably installed in the rotating holes of the outer rocker arm (3), and the middle part of the concave rotating shaft (13) is provided with a second arc surface; two spring rocker arms (4) are respectively fixedly connected to the first end of the corresponding concave rotating shaft (13) by pins, and the two spring rocker arms (4) are connected by springs (5). Connection; push rod small rocker arm (12), including two, respectively fixedly connected to the second end of the corresponding concave rotating shaft (13) by a pin; electromagnet (10), the electromagnet (10) is fixedly installed on the outer rocker arm (3), and a push rod (11) is installed on the electromagnet (10); wherein, the rocker arm disengagement mechanism of the control system has a linkage state and a disengagement state. In the linkage state, the push rod (11) is in the retracted position, and the two spring small rocker arms (4) under the tension of the spring (5) cause the second arc surface of the concave rotating shaft (13) to meet the first arc surface on both sides of the second end of the inner rocker arm (1). The arc surfaces contact and engage, allowing the inner rocker arm (1) and the outer rocker arm (3) to become one unit during swinging, forming a linkage. In the disengaged state, the push rod (11) pushes the two push rod small rocker arms (12) to rotate, and the two concave rotating shafts (13) drive the two spring small rocker arms (4) to rotate respectively, causing the spring (5) to stretch. When the spring (5) crosses the maximum stretch length, the two spring small rocker arms (4) reverse to the upper side. Under the pulling force of the spring (5), the concave rotating shaft (13) rotates to the predetermined position, allowing the inner rocker arm (1) to swing freely in the fan-shaped groove of the outer rocker arm (3) and disengage from each other.

2. The rocker arm disengagement mechanism of the control system according to claim 1, characterized in that, The inner rocker arm (1) has a weight reduction hole.

3. The rocker arm disengagement mechanism of the control system according to claim 1, characterized in that, The outer rocker arm (3) is provided with a first limiting block (301) and a second limiting block (302). In the linkage state, the first limiting block (301) and the second limiting block (302) can limit the two spring rocker arms (4).

4. The rocker arm disengagement mechanism of the control system according to claim 1, characterized in that, The outer rocker arm (3) is provided with a third limiting block (303) and a fourth limiting block (304). When disengaged, the third limiting block (303) and the fourth limiting block (304) can limit the two push rod small rocker arms (12).

5. The rocker arm disengagement mechanism of the control system according to claim 1, characterized in that, The bracket (2) also includes a base for positioning the bracket (2).

6. The rocker arm disengagement mechanism of the control system according to claim 1, characterized in that, The concave rotating shaft (13) is semi-cylindrical in the middle, and the bottom surface of the concave rotating shaft (13) is adapted to the bottom surface of the fan-shaped groove of the outer rocker arm (3).

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