Grid rudder transmission device and grid rudder device

Abstract

The present application provides a grid rudder transmission device and a grid rudder device, the device comprising: a machine base, a main shaft, an unfolding mechanism and a swinging mechanism; the machine base is used to be fixed on the inner wall of the arrow body; the main shaft is rotatably connected in the machine base; the unfolding mechanism is fixedly connected to the main shaft and passes through the main shaft to be connected to the grid wing; the unfolding mechanism is used to drive the grid wing to unfold; the swinging mechanism is fixedly connected to the machine base and connected to the main shaft; the swinging mechanism is used to drive the main shaft to rotate in the machine base, and the rotation of the main shaft drives the grid wing to swing. The present application improves the synchronism of the unfolding speed of multiple groups of grid rudders, the reliability and reduces the failure rate.

Description

Technical Field

[0001] The present application relates to the technical field of grid rudders, and in particular to a grid rudder transmission device and a grid rudder device. Background Art

[0002] Reusable rockets can be reused, which improves the utilization rate of rockets and reduces launch costs. Among them, the grid rudder can be used to control the attitude of the separated rocket sub-stage, control its flight trajectory, and return the rocket sub-stage to the predetermined landing area. It has become an increasingly popular way of recovering rockets at home and abroad. As a part of the launch vehicle, the grid rudder is always the goal of the rocket device to be light and highly reliable.

[0003] The grid rudder device is mainly composed of grid wings, deployment mechanisms and swing mechanisms. The deployment mechanisms include motor deployment, spring deployment and cylinder deployment. Recoverable rockets are generally equipped with multiple sets of grid rudders. Since it is difficult to control the deployment speed of spring deployment and cylinder deployment, it is also difficult to ensure the synchronization of the deployment speed of multiple sets of grid rudders, which reduces reliability. The swing mechanism is mostly in the form of a push rod with a threaded transmission inside. It is easy to get stuck under temperature changes, has a high failure rate and poor reliability.

[0004] Therefore, the technical problem that urgently needs to be solved is: how to improve the synchronization and reliability of the deployment speed of multiple groups of grid rudders and reduce the failure rate. Summary of the invention

[0005] The purpose of the present application is to provide a grid rudder transmission device and a grid rudder device, which improve the synchronization and reliability of the deployment speed of multiple groups of grid rudders and reduce the failure rate.

[0006] In order to achieve the above-mentioned purpose, the present application provides a grid rudder transmission device, which includes: a machine base, a main shaft, a deployment mechanism and a swinging mechanism; the machine base is used to be fixed on the inner wall of the arrow body; the main shaft is rotatably connected in the machine base; the deployment mechanism is fixedly connected to the main shaft and is connected to the grid wing through the main shaft; the deployment mechanism is used to drive the grid wing to deploy; the swinging mechanism is fixedly connected to the machine base and connected to the main shaft; the swinging mechanism is used to drive the main shaft to rotate in the machine base, and the rotation of the main shaft drives the grid wing to swing.

[0007] The grid rudder transmission device as described above, wherein the machine base has an axial hole, and the main shaft is rotatably connected in the axial hole through a main bearing.

[0008] The grid rudder transmission device as described above, wherein a grid wing mounting support is provided on the main shaft, and the grid wing mounting support is located on a side of the main shaft away from the swing mechanism;

[0009] The grid wing is rotatably connected to the grid wing support.

[0010] In the grid rudder transmission device as described above, a deployment mechanism mounting support is fixedly provided on the main shaft, and the deployment mechanism is mounted on the deployment mechanism mounting support.

[0011] The grid rudder transmission device as described above, wherein the unfolding mechanism includes: a first servo, a first coupling, a first connecting rod, a second connecting rod and a wing connecting rod; the first servo is hinged to the end of the first connecting rod through the first coupling; the end of the first connecting rod away from the first coupling is hinged to the second connecting rod; the second connecting rod passes through the main shaft and is hinged to the wing connecting rod; the wing connecting rod is fixedly connected to the grid wing; after the first servo is started, it drives the first connecting rod and the second connecting rod to swing, the second connecting rod pulls the wing connecting rod, and the wing connecting rod drives the grid wing to unfold.

[0012] As described above, in the grid rudder transmission device, a swing mechanism mounting support is provided on the machine base, and the swing mechanism is provided on the swing mechanism mounting support.

[0013] The grid rudder transmission device as described above, wherein the swing mechanism includes: a second servo, a second coupling, a third connecting rod and a fourth connecting rod; the second servo is hinged to the third connecting rod through the second coupling; one end of the fourth connecting rod is hinged to the end of the third connecting rod away from the second coupling, and the other end is connected to the main shaft; after the second servo is started, it drives the third connecting rod and the fourth connecting rod to swing, and the fourth connecting rod drives the main shaft to rotate in the machine base.

[0014] The grid rudder transmission device as described above, wherein the swing mechanism is connected to the deployment mechanism mounting support, and the swing of the swing mechanism drives the deployment mechanism mounting support, the deployment mechanism, the main shaft and the grid wing to rotate as a whole relative to the machine base.

[0015] The grid rudder transmission device as described above, wherein the main shaft has a hollow cylinder; the second connecting rod passes through the hollow cylinder of the main shaft and is hinged to the wing connecting rod.

[0016] The present application also provides a grid rudder device, comprising a plurality of groups of grid rudders, wherein the plurality of groups of grid rudders are symmetrically arranged on the side wall of the arrow body; each group of grid rudders comprises the grid rudder transmission device and grid wings; the grid wings are located on the outside of the arrow body, and the grid rudder transmission device is located on the inside of the arrow body; the grid rudder transmission device is connected to the grid wings; the grid rudder transmission device drives the grid wings to unfold and swing.

[0017] The beneficial effects achieved by this application are as follows:

[0018] (1) The present application uses a servo and a connecting rod mechanism to control the deployment and swinging of the grid wing, so that the grid wing can be deployed smoothly and each grid wing can be deployed synchronously, thereby improving the deployment speed synchronization and reliability of multiple groups of grid rudders and reducing the failure rate.

[0019] (2) The entire mechanism of the present application has a simple structure, small mass, and a compact overall structure, which saves space on the arrow.

[0020] (3) The rotation speed of the servo of the present application is precisely controllable, and the deployment speed of the grid wing is controllable and adjustable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For those skilled in the art, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the front and side stereoscopic structure of a grid rudder transmission device according to an embodiment of the present application.

[0023] Figure 2 It is a schematic diagram of the rear three-dimensional structure of a grid rudder transmission device according to an embodiment of the present application.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the deployment mechanism of a grid rudder transmission device according to an embodiment of the present application.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of a swing mechanism of a grid rudder transmission device according to an embodiment of the present application.

[0026] Figure markings: 1-machine base; 2-grid wing; 3-main shaft; 4-unfolding mechanism; 5-swinging mechanism; 6-grid wing shaft; 7-main bearing; 11-unfolding mechanism mounting support; 12-swinging mechanism mounting support; 13-axle ear; 21-connecting arm; 31-grid wing mounting support; 32-hollow cylinder; 41-first servo; 42-first coupling; 43-first connecting rod; 44-second connecting rod; 45-first pin shaft; 46-second pin shaft; 47-wing connecting rod; 51-second servo; 52-second coupling; 53-third connecting rod; 54-fourth connecting rod; 55-first shaft; 56-second shaft. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0028] Embodiment 1

[0029] like Figure 1-4 As shown, the present application provides a grid rudder transmission device, which includes: a machine base 1, a main shaft 3, a deployment mechanism 4 and a swing mechanism 5; the machine base 1 is used to be fixed on the inner wall of the arrow body; the main shaft 3 is rotatably connected in the machine base 1; the deployment mechanism 4 is fixedly connected to the main shaft 3, and is connected to the grid wing 2 through the main shaft 3; the deployment mechanism 4 is used to drive the grid wing 2 to deploy; the swing mechanism 5 is fixedly connected to the machine base 1 and is connected to the main shaft 3; the swing mechanism 5 is used to drive the main shaft 3 to rotate in the machine base 1, and the rotation of the main shaft 3 drives the grid wing 2 to swing.

[0030] like Figure 1-4 As shown, the base 1 has an axial hole, and the main shaft 3 is rotatably connected in the axial hole through the main bearing 7. The function of the main bearing 7 is to reduce the friction between the main shaft 3 and the base 1, so that the main shaft 3 rotates smoothly in the base 1, thereby facilitating and easily adjusting the swing angle of the grid wing 2. The main shaft 3 is the main rotating shaft of the transmission device, and the main shaft 3 is a hollow structure. The front end of the main shaft 3 is connected to the grid wing 2, and the rear end of the main shaft 3 is installed with an unfolding mechanism 4.

[0031] As a specific embodiment of the present invention, the base 1 is mainly used to fix other components of the transmission device, and the swing mechanism 5 is installed at the rear end of the base 1, that is, the end away from the grid wing 2.

[0032] like Figure 3 As shown, a grid wing mounting support 31 is provided on the main shaft 3, and the grid wing mounting support 31 is located on the side of the main shaft 3 away from the swing mechanism 5; the grid wing 2 is rotatably connected to the grid wing support.

[0033] As a specific embodiment of the present invention, the grid wing 2 is a grid-like thin-wall structure with light weight.

[0034] like Figure 3 As shown, the grid wing 2 is installed on the main shaft 3, and two fork-shaped connecting arms 21 are provided at the end thereof. The connecting arms 21 have axial holes for hinged connection with the axial holes on the grid wing mounting bracket 31 through the grid wing shaft 6. The grid wing 2 is folded to unfolded through the rotation connection of the grid wing shaft 6. In addition, a wing connecting rod 47 is installed on the grid wing 2. The unfolding drive device of the unfolding mechanism 4 pulls the wing connecting rod 47, and the grid wing 2 can be unfolded.

[0035] As a specific embodiment of the present invention, two grid wing mounting brackets 31 are arranged on the main shaft 3, and both grid wing mounting brackets 31 have mounting holes; the two connecting arms 21 at the ends of the grid wing 2 are rotatably connected to the two grid wing mounting brackets 31 through the grid wing shaft 6, and the grid wing shaft 6 passes through the axial hole of the connecting arm 21 and the mounting hole of the grid wing mounting bracket 31 to realize the rotational connection between the grid wing 2 and the grid wing mounting bracket 31.

[0036] like Figure 3 and 4 As shown, a deployment mechanism mounting support 11 is fixedly arranged on the main shaft 3, and the deployment mechanism 4 is mounted on the deployment mechanism mounting support. A shaft ear 13 is fixed on the deployment mechanism mounting support; the shaft ear 13 is used to connect with the swing mechanism 5.

[0037] like Figure 3 and 4 As shown, the unfolding mechanism 4 includes: a first servo 41, a first coupling 42, a first connecting rod 43, a second connecting rod 44 and a wing connecting rod 47; the first servo 41 is hinged to the end of the first connecting rod 43 through the first coupling 42; the end of the first connecting rod 43 away from the first coupling 42 is hinged to the second connecting rod 44; the second connecting rod 44 passes through the main shaft 3 and is hinged to the wing connecting rod 47; the wing connecting rod 47 is fixedly connected to the grid wing 2; after the first servo 41 is started, it drives the first connecting rod 43 and the second connecting rod 44 to swing, the second connecting rod 44 pulls the wing connecting rod 47, and the wing connecting rod 47 drives the grid wing 2 to unfold.

[0038] like Figure 3 and 4 As shown, the unfolding mechanism 4 is installed on the main shaft 3, and is mainly composed of a first steering gear 41, a first coupling 42, a first connecting rod 43, a second connecting rod 44, a first pin 45, a second pin 46, a wing connecting rod 47, etc. The first steering gear 41 is installed on the main shaft 3, the first connecting rod 43 is coaxially connected to the first steering gear 41 through the first coupling 42, the first connecting rod 43 is connected to the second connecting rod 44 through the first pin 45, and the second connecting rod 44 passes through the hollow cylinder 32 of the main shaft 3. The other end of the second connecting rod 44 is connected to the wing connecting rod 47 through the second pin shaft 46, and the wing connecting rod 47 is fixed to the grid wing 2 by screws. The first servo 41 rotates, driving the first connecting rod 43 to rotate. The swing of the first connecting rod 43 drives the second connecting rod 44 to pull in the front and back directions. The front and back pulling of the second connecting rod 44 drives the grid wing 2 to rotate around the grid wing axis 6 on the main shaft 3. After the first servo 41 rotates a certain angle, the grid wing 2 rotates 90 degrees to complete the deployment of the grid wing 2.

[0039] like Figure 3 and 4As shown, a swing mechanism mounting support 12 is provided on the machine base 1 , the swing mechanism mounting support 12 is located below the unfolding mechanism mounting support 11 , and the swing mechanism 5 is provided on the swing mechanism mounting support 12 .

[0040] like Figure 3 and 4 As shown, the swing mechanism 5 includes: a second steering gear 51, a second coupling 52, a third connecting rod 53 and a fourth connecting rod 54; the second steering gear 51 is hinged to the third connecting rod 53 through the second coupling 52; one end of the fourth connecting rod 54 is hinged to the end of the third connecting rod 53 away from the second coupling 52, and the other end is connected to the main shaft 3; after the second steering gear 51 is started, it drives the third connecting rod 53 and the fourth connecting rod 54 to swing, and the fourth connecting rod 54 drives the main shaft 3 to rotate in the base 1.

[0041] like Figure 3 and 4 As shown, the swing mechanism 5 is installed at the rear end of the machine base 1, and the swing mechanism 5 is mainly composed of a second steering gear 51, a second coupling 52, a third connecting rod 53 and a fourth connecting rod 54, a first shaft 55 and a second shaft 56, etc. The second steering gear 51 is installed at the rear end of the machine base 1, the steering gear 1 is connected to the third connecting rod 53 through the second coupling 52, the third connecting rod 53 is connected to the fourth connecting rod 54 through the first shaft 55, and the fourth connecting rod 54 is connected to the shaft ear 13 fixedly connected to the main shaft 3 through the second shaft 56. When the second steering gear 51 rotates, it drives the third connecting rod 53 to swing, the third connecting rod 53 drives the fourth connecting rod 54 to swing, and the fourth connecting rod 54 drives the main shaft 3 to swing around the machine base 1 through the shaft ear 13.

[0042] like Figure 3 and 4 As shown, the swing mechanism 5 is connected to the deployment mechanism mounting support 11 , and the swing of the swing mechanism 5 drives the deployment mechanism mounting support 11 , the deployment mechanism 4 , the main shaft 3 and the grid wing 2 to rotate as a whole relative to the base 1 .

[0043] like Figure 4 As shown, the main shaft 3 has a hollow cylinder 32; the second connecting rod 44 passes through the hollow cylinder 32 of the main shaft 3 and is hinged to the wing connecting rod 47. The second connecting rod 44 is driven by the first connecting rod 43 to move along the pulling movement of the hollow cylinder 32, pulling the wing connecting rod 47 to unfold the grid wing 2.

[0044] Embodiment 2

[0045] like Figure 3 and 4As shown, the present application also provides a grid rudder device, including multiple groups of grid rudders, which are symmetrically arranged on the side walls of the arrow body; each group of grid rudders includes a grid rudder transmission device and a grid wing 2; the grid wing 2 is located on the outside of the arrow body, and the grid rudder transmission device is located on the inside of the arrow body; the grid rudder transmission device is connected to the grid wing 2; the grid rudder transmission device drives the grid wing 2 to unfold and swing.

[0046] As a specific embodiment of the present invention, a grid rudder device includes a first group of grid rudders and a second group of grid rudders, and the first group of grid rudders and the second group of grid rudders are symmetrically arranged on both sides of the arrow body.

[0047] As a specific embodiment of the present invention, the base 1 is fixed to the inner wall of the arrow body; the grid wing 2 is located on the outside of the arrow body, and the unfolding mechanism 4 and the swinging mechanism 5 are located on the inside of the arrow body, so as to protect the unfolding mechanism 4 and the swinging mechanism 5, and the arrow body has a through hole through which the second connecting rod 44 passes; the second connecting rod 44 passes through the through hole of the arrow body and is hinged to the wing connecting rod 47.

[0048] As a specific embodiment of the present invention, when the grid wings 2 of multiple groups of grid rudders need to be deployed, the deployment mechanisms 4 of the multiple groups of grid rudders are started synchronously, and the deployment mechanisms 4 of the multiple groups of grid rudders drive the multiple grid wings 2 to be deployed synchronously.

[0049] As a specific embodiment of the present invention, when the grid wing 2 needs to be swung, the swung mechanism 5 is started to control the grid wing 2 to swing to a certain angle, thereby adjusting the flight attitude of the carrier rocket.

[0050] The beneficial effects achieved by this application are as follows:

[0051] (1) The present application uses a servo and a connecting rod mechanism to control the deployment and swinging of the grid wing, so that the grid wing can be deployed smoothly and each grid wing can be deployed synchronously, thereby improving the deployment speed synchronization and reliability of multiple groups of grid rudders and reducing the failure rate.

[0052] (2) The entire mechanism of the present application has a simple structure, light weight, and a compact overall structure, which saves space on the arrow.

[0053] (3) The rotation speed of the servo of the present application is precisely controllable, and the deployment speed of the grid wing is controllable and adjustable.

[0054] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A grid rudder transmission device, characterized in that: The device comprises: a machine base, a main shaft, an unfolding mechanism and a swinging mechanism; The machine base is used to be fixed inside the inner wall of the arrow body; The main shaft is rotatably connected in the base; The unfolding mechanism is fixedly connected to the main shaft and passes through the main shaft to be connected to the grid wing; the unfolding mechanism is used to drive the grid wing to unfold; The swing mechanism is fixedly connected to the base and connected to the main shaft; the swing mechanism is used to drive the main shaft to rotate in the base, and the rotation of the main shaft drives the grid wing to swing; The main shaft is fixedly provided with an unfolding mechanism mounting support, and the unfolding mechanism is mounted on the unfolding mechanism mounting support; the unfolding mechanism mounting support is fixed with an axle ear; the axle ear is used to connect with the swing mechanism; The deployment mechanism comprises: a first steering gear, a first coupling, a first connecting rod, a second connecting rod and a wing connecting rod; The first steering gear is hinged to the end of the first connecting rod through the first coupling; One end of the first connecting rod away from the first coupling is hinged to the second connecting rod; The second connecting rod passes through the main shaft and is hinged to the connecting wing rod; The wing connecting rod is fixedly connected to the grid wing; After the first steering gear is started, the first connecting rod and the second connecting rod are driven to swing, the second connecting rod pulls the wing connecting rod, and the wing connecting rod drives the grid wing to unfold; The swing mechanism is connected to the deployment mechanism mounting support, and the swing mechanism swings to drive the deployment mechanism mounting support, the deployment mechanism, the main shaft and the grid wing to rotate as a whole relative to the base; The machine base has an axial hole, and the main shaft is rotatably connected in the axial hole through a main bearing; two grid wing mounting supports are arranged on the main shaft, and the grid wing mounting supports are located on a side of the main shaft away from the swing mechanism; The grid wing is rotatably connected to the grid wing support; Both grid wing mounting supports have mounting holes; the two connecting arms at the ends of the grid wing are rotatably connected to the two grid wing mounting supports through the grid wing shafts, the grid wing shafts penetrate the shaft holes of the connecting arms and the mounting holes of the grid wing mounting supports, and the grid wings are rotatably connected to the grid wing mounting supports.

2. The grid rudder transmission device according to claim 1, characterized in that: A swing mechanism mounting support is arranged on the machine base, and the swing mechanism is arranged on the swing mechanism mounting support.

3. The grid rudder transmission device according to claim 2, characterized in that: The swing mechanism comprises: a second steering gear, a second coupling, a third connecting rod and a fourth connecting rod; The second steering gear is hinged to the third connecting rod through the second coupling; One end of the fourth connecting rod is hinged to the end of the third connecting rod away from the second coupling, and the other end is connected to the main shaft; After the second steering gear is started, it drives the third connecting rod and the fourth connecting rod to swing, and the fourth connecting rod drives the main shaft to rotate in the base.

4. The grid rudder transmission device according to claim 1, characterized in that: The main shaft has a hollow cylinder; The second connecting rod passes through the hollow cylinder of the main shaft and is hinged to the connecting wing pull rod.

5. A grid rudder device, characterized in that: It comprises a plurality of groups of grid rudders, which are symmetrically arranged on the side wall of the arrow body; each group of grid rudders comprises the grid rudder transmission device and grid wings according to any one of claims 1 to 4; The grid wing is located outside the arrow body, and the grid rudder transmission device is located inside the arrow body; The grid rudder transmission device is connected to the grid wing; The grid rudder transmission device drives the grid wings to unfold and swing.

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