A four-way synchronous unfolding drive mechanism for a pod rod

Abstract

The present invention relates to a four-way synchronous deployment drive mechanism for a pod pole, comprising: a drive mechanism unit, a synchronous transmission mechanism unit, and a pod pole winding mechanism unit. The drive mechanism unit is fixedly installed on the base plate of the synchronous transmission mechanism unit; the pod pole winding mechanism unit is installed on the base plate of the synchronous transmission mechanism unit through its thrust bearing and can rotate driven by the gear of the drive mechanism unit, realizing the synchronous deployment of the pod pole in four mutually perpendicular directions. The present invention uses a single motor to drive the pod pole winding mechanism as an auxiliary power source for deployment, and uses the same motor to drive the synchronous transmission mechanism as the main power source for the deployment of the pod pole to achieve synchronous deployment in four mutually perpendicular directions of the pod pole, having the characteristics of good deployment synchronization, simple control, high reliability, simple design, convenient installation, easy use, good processing technology and economy.

Description

Technical Field

[0001] The present invention relates to a four-way synchronous deployment drive mechanism for pod poles, which is a multi-directional drive deployment mechanism for the support structure of large-scale net / membrane antennas in the aerospace field and a multi-directional drive deployment mechanism for support structures using pod poles in the civilian field. Background Art

[0002] Currently, the support structure of large-scale space deployable net / membrane antennas uses pod poles. The pod poles can be flattened and curled, and have a certain stiffness after deployment, and have been widely used in the aerospace field. For large and complex net / membrane antennas using pod poles as the support mechanism, the pod poles are flattened, curled and retracted before launch, and after being unlocked on the predetermined orbit, a drive mechanism is used to realize the multi-directional synchronous, orderly and controllable deployment of the pod poles, thereby driving the antenna to deploy. At present, for large-scale space deployable net / membrane antennas using a multi-drive deployment mechanism, when deploying synchronously in multiple directions, the auxiliary deployment mechanism is relatively complex and there are many drive motors, the control difficulty is large, and it is difficult to ensure the multi-directional deployment synchronism. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the pod pole deployment mechanism for multi-directional deployment is driven by multiple motors, and the deployment synchronism is poor; a four-way synchronous deployment drive mechanism for pod poles is provided to solve the problems of multi-motor drive, complex control system and difficult-to-guarantee synchronism in the prior art.

[0004] The technical solution of the present invention is as follows:

[0005] A four-way synchronous deployment drive mechanism for pod poles, comprising: a drive mechanism unit, a synchronous transmission mechanism unit and a pod pole winding and unwinding mechanism unit;

[0006] The drive mechanism unit is installed and fixed on the base plate of the synchronous transmission mechanism unit; the pod pole winding and unwinding mechanism unit is installed on the base plate of the synchronous transmission mechanism unit through its thrust bearing, and can rotate under the drive of the gear of the drive mechanism unit, realizing the synchronous deployment of the pod poles in four mutually perpendicular directions;

[0007] The drive mechanism unit includes: a drive fixed seat, a drive motor, a drive gear, a first-stage reduction gear, a second-stage reduction gear, a reversing reduction gear and a drive bevel gear;

[0008] The drive motor is installed on the drive fixed seat, the drive gear is installed on the output shaft of the drive motor; the first-stage reduction gear is installed on the drive fixed seat and meshes with the drive gear; the second-stage reduction gear is installed on the drive fixed seat and on the same axis as the first-stage reduction gear; the reversing reduction gear is installed on the drive fixed seat and meshes with the second-stage reduction gear; the drive bevel gear is installed on the drive fixed seat and on the same axis as the reversing reduction gear;

[0009] The drive motor drives the drive gear, and the drive gear meshes with the first-stage reduction gear; the first-stage reduction gear and the second-stage reduction gear are fixed on the same rotating shaft; the second-stage reduction gear meshes with the commutation reduction gear.

[0010] Further, the synchronous transmission mechanism unit includes: a first transmission bevel gear, a transmission rod, a second transmission bevel gear, a transmission spur gear, a first linkage spur gear, a second linkage spur gear, a first pod rod guide wheel, a second pod rod guide wheel, a pod rod pressing drive roller, a pod rod drive guide seat, a pod rod shape-preserving guide seat, and a base plate;

[0011] The first transmission bevel gear is installed at one end of the transmission rod, and the second transmission bevel gear is installed at the other end of the transmission rod and meshes with the transmission spur gear; the transmission spur gear and the first linkage spur gear are coaxial and are both installed on the pod rod drive guide seat; the second linkage spur gear is also installed on the pod rod drive guide seat and meshes coaxially with the first linkage spur gear;

[0012] The pod rod drive guide seat is installed on the base plate;

[0013] The first pod rod guide wheel, the second pod rod guide wheel, and the pod rod shape-preserving guide seat are all installed on the base plate, and these three components are installed in four mutually perpendicular directions on the base plate;

[0014] Four pairs of pod rod pressing drive rollers are respectively installed in four mutually perpendicular directions on the base plate, and each pair of pod rod pressing drive rollers is respectively coaxial with the second linkage spur gear and the first linkage spur gear.

[0015] Further, the pod rod winding mechanism unit includes: a pod rod fixing seat, a thrust bearing, a pod rod, and an internal gear;

[0016] The pod rod, the thrust bearing, and the internal gear are all installed on the pod rod fixing seat; four pod rods are installed on four side surfaces of the pod rod fixing seat; the thrust bearing is installed at both ends of the pod rod fixing seat; the internal gear is installed on the inner holes at both ends of the pod rod fixing seat.

[0017] Further, the four pod rods are in a cross shape in the same plane, and adjacent pod rods are perpendicular to each other.

[0018] Further, the pod rod fixing seat is installed on the base plate through the thrust bearing, and the internal gear meshes with the second-stage reduction gear; the drive bevel gear meshes with the first transmission bevel gear.

[0019] Further, the drive motor is transmitted to the internal gear through the drive gear, the first-stage reduction gear, and the second-stage reduction gear.

[0020] Further, the drive motor is transmitted to the first drive bevel gear through the drive gear, the first-stage reduction gear, the second-stage reduction gear, the reversing reduction gear, and the drive bevel gear, and then transmitted to the second drive bevel gear, the first linkage spur gear, and the second linkage spur gear, and finally transmitted to the pod rod pressing drive roller.

[0021] Further, the rotational speed of the pod rod pressing drive roller is greater than that of the pod rod fixed seat, and the power for the pod rod to unfold is driven by the pod rod pressing drive roller.

[0022] Further, the pod rods unfold synchronously in four mutually perpendicular directions in the same plane, and the unfolding speed is controllable.

[0023] The beneficial effects of the present invention compared with the prior art are as follows:

[0024] (1) The present invention uses a single motor drive through various gears and transmission linkages, with high transmission efficiency, and realizes the orderly, stable, and synchronous unfolding of the pod rods in four directions by using differential transmission drive.

[0025] (2) The present invention uses the pod rod guide wheel and the pod rod shape-preserving guide seat to achieve a stable unfolding path of the pod rod and a stable shape of the pod rod after unfolding.

[0026] (3) The four-way synchronous unfolding drive mechanism of the pod rod of the present invention has good unfolding synchronism, light weight, and reliable unfolding. This four-way synchronous unfolding drive mechanism can not only be applied to the end drive unfolding mechanism of the support structure of large-scale net / membrane antenna pod rods, but also to the drive unfolding mechanism using pod rods or pod-rod-like structures as support structures in the civil field. Description of the Drawings

[0027] Figure 1 Pod rod drive mechanism diagram;

[0028] Figure 2 Pod rod transmission mechanism diagram;

[0029] Figure 3 Pod rod winding mechanism diagram;

[0030] Figure 4 Pod rod unfolding mechanism storage diagram;

[0031] Figure 5 Pod rod unfolding mechanism unfolding diagram.

[0032] Explanation of the reference numerals in the drawings:

[0033] Figure 1 In the figure: 1-1 - drive fixed seat; 1-2 - drive motor; 1-3 - drive gear; 1-4 - first-stage reduction gear; 1-5 - second-stage reduction gear; 1-6 - steering reduction gear; 1-7 - drive bevel gear;

[0034] Figure 2 Among them: 2-1 - first driving bevel gear; 2-2 - transmission rod; 2-3 - second driving bevel gear; 2-4 - transmission spur gear; 2-5 - first linkage spur gear; 2-6 - second linkage spur gear; 2-7 - first pod rod guide wheel; 2-8 - second pod rod guide wheel; 2-9 - pod rod pressing drive roller; 2-10 - pod rod drive guide seat; 2-11 - pod rod shape-preserving guide seat; 2-12 - base plate.

[0035] Figure 3 Among them: 3-1 - pod rod; 3-2 - pod rod fixing seat; 3-3 - thrust bearing; 3-4 - internal gear. Specific embodiments

[0036] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0037] Based on the functional requirement of good multi-directional deployment synchronization of large-scale space deployable net / membrane antennas, the present invention proposes a four-way synchronous deployment drive mechanism for pod rods, which mainly integrates a drive mechanism unit, a transmission mechanism unit, and a pod rod winding mechanism unit. The drive mechanism unit is installed and fixed on the base plate of the synchronous transmission mechanism unit; the pod rod winding mechanism unit is installed on the base plate of the synchronous transmission mechanism unit through its thrust bearing and can rotate under the drive of the gear of the drive mechanism unit to realize the synchronous deployment of the pod rod in four mutually perpendicular directions;

[0038] The drive mechanism unit includes: drive fixing seat 1-1, drive motor 1-2, drive gear 1-3, first-stage reduction gear 1-4, second-stage reduction gear 1-5, reversing reduction gear 1-6, and drive bevel gear 1-7;

[0039] The drive motor 1-2 is installed on the drive fixing seat 1-1, and the drive gear 1-3 is installed on the output shaft of the drive motor 1-2; the first-stage reduction gear 1-4 is installed on the drive fixing seat 1-1 and meshes with the drive gear 1-3; the second-stage reduction gear 1-5 is installed on the drive fixing seat 1-1 and is on the same shaft as the first-stage reduction gear 1-4; the reversing reduction gear 1-6 is installed on the drive fixing seat 1-1 and meshes with the second-stage reduction gear 1-5; the drive bevel gear 1-7 is installed on the drive fixing seat 1-1 and is on the same shaft as the reversing reduction gear 1-6;

[0040] The drive motor 1-2 drives the drive gear 1-3, and the drive gear 1-3 meshes with the first-stage reduction gear 1-4; the first-stage reduction gear 1-4 and the second-stage reduction gear 1-5 are fixed on the same rotating shaft; the second-stage reduction gear 1-5 meshes with the reversing reduction gear 1-6.

[0041] The synchronous transmission mechanism unit includes: a first transmission bevel gear 2-1, a transmission rod 2-2, a second transmission bevel gear 2-3, a transmission spur gear 2-4, a first linkage spur gear 2-5, a second linkage spur gear 2-6, a first pod rod guide wheel 2-7, a second pod rod guide wheel 2-8, a pod rod pressing drive roller 2-9, a pod rod drive guide seat 2-10, a pod rod shape-preserving guide seat 2-11, and a base plate 2-12;

[0042] The first transmission bevel gear 2-1 is installed at one end of the transmission rod 2-2, and the second transmission bevel gear 2-3 is installed at the other end of the transmission rod 2-2 and meshes with the transmission spur gear 2-4; the transmission spur gear 2-4 and the first linkage spur gear 2-5 are coaxial and are both installed on the pod rod drive guide seat 2-10; the second linkage spur gear 2-6 is also installed on the pod rod drive guide seat 2-10 and meshes coaxially with the first linkage spur gear 2-5;

[0043] The pod rod drive guide seat 2-10 is installed on the base plate 2-12;

[0044] The first pod rod guide wheel 2-7, the second pod rod guide wheel 2-8, and the pod rod shape-preserving guide seat 2-11 are all installed on the base plate 2-12, and these three components are installed in four mutually perpendicular directions on the base plate 2-12;

[0045] Four pairs of pod rod pressing drive rollers 2-9 are respectively installed in four mutually perpendicular directions on the base plate 2-12, and each pair of pod rod pressing drive rollers 2-9 is respectively coaxially corresponding to the second linkage spur gear 2-6 and the first linkage spur gear 2-5.

[0046] The pod rod winding mechanism unit includes: a pod rod fixing seat 3-1, a thrust bearing 3-2, a pod rod 3-3, and an internal gear 3-4;

[0047] The pod rod 3-3, the thrust bearing 3-2, and the internal gear 3-4 are all installed on the pod rod fixing seat 3-1; four pod rods 3-3 are installed on four side surfaces of the pod rod fixing seat 3-1; the thrust bearing 3-2 is installed at both ends of the pod rod fixing seat 3-1; the internal gear 3-4 is installed on the inner holes at both ends of the pod rod fixing seat 3-1.

[0048] Preferably, the four pod rods 3-3 are in a cross shape in the same plane, and the adjacent pod rods 3-3 are perpendicular to each other.

[0049] The pod rod fixing seat 3-1 is installed on the base plate 2-12 through the thrust bearing 3-2, and the internal gear 3-4 meshes with the secondary reduction gear 1-5; the drive bevel gear 1-7 meshes with the first transmission bevel gear 2-1. The drive motor 1-2 is transmitted to the internal gear 3-4 through the drive gear 1-3, the primary reduction gear 1-4, and the secondary reduction gear 1-5.

[0050] The drive motor 1-2 is transmitted to the first drive bevel gear 2-1 through the drive gear 1-3, the first-stage reduction gear 1-4, the second-stage reduction gear 1-5, the reversing reduction gear 1-6, and the drive bevel gear 1-7, and then transmitted to the second drive bevel gear 2-3, the first linkage spur gear 2-5, and the second linkage spur gear 2-6, and finally transmitted to the pod rod pressing drive roller 2-9.

[0051] The rotation speed of the pod rod pressing drive roller 2-9 is greater than that of the pod rod fixing seat 3-1, and the power for the pod rod to unfold is driven by the pod rod pressing drive roller 2-9.

[0052] In the present invention, the pod rods unfold synchronously in four mutually perpendicular directions in the same plane, and the unfolding speed is controllable.

[0053] Embodiment:

[0054] Figure 1 It shows that the drive motor 1-2 is installed on the drive fixing seat 1-1, and the drive gear 1-3 is installed on the output shaft of the drive motor 1-2; the first-stage reduction gear 1-4 is installed on the drive fixing seat 1-1 and meshes with the drive gear 1-3.

[0055] Figure 1 It shows that the second-stage reduction gear 1-5 is installed on the drive fixing seat 1-1 and on the same shaft as the first-stage reduction gear 1-4; the reversing reduction gear 1-6 is installed on the drive fixing seat 1-1 and meshes with the second-stage reduction gear 1-5.

[0056] Figure 1 It shows that the drive bevel gear 1-7 is installed on the drive fixing seat 1-1 and on the same shaft as the reversing reduction gear 1-6.

[0057] Figure 2 It shows that the first drive bevel gear 2-1 is installed on the transmission rod 2-2, and the second drive bevel gear 2-3 is also installed on the transmission rod 2-2 and meshes with the transmission spur gear 2-4; the transmission spur gear 2-4 and the first linkage spur gear 2-5 are coaxial and are both installed on the pod rod drive guide seat 2-10; the second linkage spur gear 2-6 is also installed on the pod rod drive guide seat 2-10 and meshes coaxially with the first linkage spur gear 2-5.

[0058] Figure 2 It shows that the pod rod drive guide seat 2-10 is installed on the base plate 2-12.

[0059] Figure 2 It shows that the first pod rod guide wheel 2-7, the second pod rod guide wheel 2-8, and the pod rod shape-preserving guide seat 2-11 are all installed on the base plate 2-12.

[0060] Figure 2 It is shown that the pod rod pressing drive roller 2-9 is installed on the base plate 2-12, and the pod rod pressing drive roller 2-9 is coaxial with the second linkage spur gear 2-6.

[0061] Figure 3 It is shown that the pod rod 3-3, the thrust bearing 3-2 and the internal gear 3-4 are all installed on the pod rod fixing seat 3-1.

[0062] Figure 4 It is shown that the pod rod fixing seat 3-1 is installed on the base plate 2-12 through the thrust bearing 3-2, and the internal gear 3-4 meshes with the secondary reduction gear 1-5; the driving bevel gear 1-7 meshes with the first transmission bevel gear 2-1.

[0063] Figure 5 It is shown that the driving motor 1-2 is transmitted to the internal gear 3-4 through the driving gear 1-3, the primary reduction gear 1-4 and the secondary reduction gear 1-5;

[0064] Figure 5 It is shown that the driving motor 1-2 is transmitted to the first transmission bevel gear 2-1 through the driving gear 1-3, the primary reduction gear 1-4, the secondary reduction gear 1-5, the reversing reduction gear 1-6 and the driving bevel gear 1-7, and then transmitted to the second transmission bevel gear 2-3, the first linkage spur gear 2-5 and the second linkage spur gear 2-6, and finally transmitted to the pod rod pressing drive roller 2-9;

[0065] Figure 5 It is shown that the rotational speed of the pod rod pressing drive roller 2-9 is greater than that of the pod rod fixing seat 3-1. Therefore, the main power for the pod rod to unfold is driven by the pod rod pressing drive roller 2-9.

[0066] The content not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims

1. A four-way synchronous unfolding drive mechanism for a pod rod, characterized in that Comprising: A driving mechanism unit, a synchronous transmission mechanism unit, and a pod rod winding mechanism unit; The driving mechanism unit is installed and fixed on the base plate of the synchronous transmission mechanism unit; the pod rod winding mechanism unit is installed on the base plate of the synchronous transmission mechanism unit through its thrust bearing and can rotate driven by the gear of the driving mechanism unit to realize the synchronous deployment of the pod rod in four mutually perpendicular directions; The driving mechanism unit includes: a driving fixed seat (1-1), a driving motor (1-2), a driving gear (1-3), a first-stage reduction gear (1-4), a second-stage reduction gear (1-5), a reversing reduction gear (1-6), and a driving bevel gear (1-7); The driving motor (1-2) is installed on the driving fixed seat (1-1), and the driving gear (1-3) is installed on the output shaft of the driving motor (1-2); the first-stage reduction gear (1-4) is installed on the driving fixed seat (1-1) and meshes with the driving gear (1-3); the second-stage reduction gear (1-5) is installed on the driving fixed seat (1-1) and is on the same shaft as the first-stage reduction gear (1-4); the reversing reduction gear (1-6) is installed on the driving fixed seat (1-1) and meshes with the second-stage reduction gear (1-5); the driving bevel gear (1-7) is installed on the driving fixed seat (1-1) and is on the same shaft as the reversing reduction gear (1-6); The driving motor (1-2) drives the driving gear (1-3), and the driving gear (1-3) meshes with the first-stage reduction gear (1-4); the first-stage reduction gear (1-4) and the second-stage reduction gear (1-5) are fixed on the same rotating shaft; the second-stage reduction gear (1-5) meshes with the reversing reduction gear (1-6); The synchronous transmission mechanism unit includes: a first transmission bevel gear (2-1), a transmission rod (2-2), a second transmission bevel gear (2-3), a transmission spur gear (2-4), a first linkage spur gear (2-5), a second linkage spur gear (2-6), a first pod rod guide wheel (2-7), a second pod rod guide wheel (2-8), a pod rod pressing drive roller (2-9), a pod rod drive guide seat (2-10), a pod rod shape-preserving guide seat (2-11), and a base plate (2-12); The first transmission bevel gear (2-1) is installed at one end of the transmission rod (2-2), and the second transmission bevel gear (2-3) is installed at the other end of the transmission rod (2-2) and meshes with the transmission spur gear (2-4); the transmission spur gear (2-4) and the first linkage spur gear (2-5) are coaxial and are both installed on the pod rod drive guide seat (2-10); the second linkage spur gear (2-6) is also installed on the pod rod drive guide seat (2-10) and meshes coaxially with the first linkage spur gear (2-5); The pod rod drive guide seat (2-10) is installed on the base plate (2-12); The first pod rod guide wheel (2-7), the second pod rod guide wheel (2-8) and the pod rod conformal guide seat (2-11) are all installed on the base plate (2-12), and the first pod rod guide wheel (2-7), the second pod rod guide wheel (2-8) and the pod rod conformal guide seat (2-11) are installed in four mutually perpendicular directions of the base plate (2-12); Four pairs of pod rod pressing drive rollers (2-9) are respectively installed in four mutually perpendicular directions of the base plate (2-12), and each pair of pod rod pressing drive rollers (2-9) is respectively coaxial with the second linkage spur gear (2-6) and the first linkage spur gear (2-5).

2. The four-way synchronous unfolding drive mechanism for the bean pod rod according to claim 1, wherein: The pod rod winding mechanism unit includes: a pod rod fixing seat (3-1), a thrust bearing (3-2), a pod rod (3-3) and an internal gear (3-4); The pod rod (3-3), the thrust bearing (3-2) and the internal gear (3-4) are all installed on the pod rod fixing seat (3-1); four pod rods (3-3) are installed on four side surfaces of the pod rod fixing seat (3-1); the thrust bearing (3-2) is installed at both ends of the pod rod fixing seat (3-1); the internal gear (3-4) is installed on the inner holes at both ends of the pod rod fixing seat (3-1).

3. The four-way synchronous unfolding drive mechanism for the bean pod rod according to claim 2, characterized in that: The four pod rods (3-3) are in a cross shape in the same plane, and adjacent pod rods (3-3) are perpendicular to each other.

4. The four-way synchronous unfolding drive mechanism for the bean pod rod according to claim 2 or 3, characterized in that: The pod rod fixing seat (3- 5. The four-way synchronous unfolding drive mechanism for the bean pod rod according to claim 2 or 3, characterized in that: ​ 6. The four-way synchronous unfolding drive mechanism for the bean pod rod according to claim 2 or 3, characterized in that: ​ 7. The four-way synchronous unfolding drive mechanism for the bean pod rod according to claim 6, wherein: ​ 8. The four-way synchronous unfolding drive mechanism for the bean pod rod according to claim 6, characterized in that: ​

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