A spacecraft compression release mechanism compression loading device

Abstract

The present invention provides a compression loading device for a spacecraft compression release mechanism, comprising a bracket, a draw hook, and a rotating shaft. The bracket is connected to the rotating shaft at a limited position at the top, and the rotating shaft is connected to a No. 1 draw rod at the bottom through a tension sensor. A No. 2 draw rod is symmetrically installed at both ends below the No. 1 draw rod, and a draw hook is symmetrically installed at both ends below each No. 2 draw rod. A No. 1 limit block and a No. 2 limit block are provided at the bottom of the bracket. The No. 1 limit block and the No. 2 limit block limit the four draw hooks, and the four draw hooks provide tension for the W-shaped compression belt. The compression loading device for a spacecraft compression release mechanism described in the present invention has a compact structure and a small operating space. The tension is decomposed step by step through the seesaw principle, and the loading process is uniform and reliable, solving the problem of difficulty in uniformly loading the W-shaped compression belt.

Description

Technical Field

[0001] The present invention belongs to the technical field of spacecraft launch, and in particular relates to a preload device for a novel belt-type compression and release mechanism of a spacecraft during ground assembly. Background Art

[0002] Due to the high launch costs, spacecraft have a special requirement for being lightweight. A certain new type of spacecraft requires the use of multiple clamping and releasing mechanisms for clamping. While maintaining a high clamping force, this places high demands on light weight. Traditional clamping rod and clamping belt clamping and releasing mechanisms cannot simultaneously meet the requirements of both light weight and a large load. Driven by this demand, a new W-type belt-type clamping and releasing mechanism has emerged. The belt-type clamping and releasing mechanism is a mechanism used to gather and clamp products during the launch phase of a spacecraft and unlock them after entering orbit. It requires a preload during ground assembly. Traditional loading methods are incapable of preloading this type of clamping and releasing mechanism. Due to its large load capacity, the W-type clamping belt is sensitive to unbalanced loading during the loading process. Uneven force can easily lead to overloading on one side of the clamping belt, resulting in plastic deformation or even fracture. The new W-type belt-type clamping and releasing mechanism is designed to meet the requirements of light weight and high clamping force, and there is no suitable clamping loading device. Summary of the Invention

[0003] In view of this, the present invention aims to propose a compression loading device for a spacecraft compression and release mechanism, so as to achieve uniform loading of the W-shaped compression belt of the new belt-type compression and release mechanism of the spacecraft under the conditions of narrow operating space and heavy load, and ensure that the compression belt will not suffer from unilateral local overload, resulting in plastic deformation or even fracture.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A compression loading device for a spacecraft compression release mechanism comprises a bracket, a hook and a rotating shaft. The upper portion of the bracket is connected to a limit position of the rotating shaft, and the lower portion of the rotating shaft is connected to a No. 1 pull rod through a tension sensor. A No. 2 pull rod is symmetrically installed at both ends below the No. 1 pull rod, and a hook is symmetrically installed at both ends below each No. 2 pull rod. A No. 1 limit block and a No. 2 limit block are provided at the bottom of the bracket. The No. 1 limit block and the No. 2 limit block limit the four hooks, and the four hooks provide tension for the W-shaped compression belt.

[0006] Furthermore, the bracket includes a top plate, side plate No. 1 and side plate No. 2, a light hole is provided in the middle of the top plate, side plate No. 1 and side plate No. 2 are symmetrically installed on both sides of the top plate, a No. 1 card platform is provided at the bottom of side plate No. 1, and a No. 2 card platform is provided at the bottom of side plate No. 2, and a No. 1 limit block is placed above the No. 2 card platform and the No. 1 card platform.

[0007] Furthermore, after the rotating shaft passes through the light hole, a nut is installed to limit it.

[0008] Furthermore, a No. 1 rocker arm is fixedly installed below the No. 1 pull rod through a No. 2 pull rod shaft, a No. 2 pull rod is installed at both ends of the No. 1 rocker arm through a No. 1 pull rod shaft, a No. 2 rocker arm is installed below each No. 2 pull rod through a pull rod shaft, and a hook is installed at both ends of each No. 2 rocker arm through a hook shaft, forming a total of four hooks.

[0009] Furthermore, the No. 1 pull rod includes a connecting rod and a connecting portion fixedly connected thereto below, the connecting portion being a U-shaped plate, and the connecting plate being fixedly connected to the bottom of the tension sensor.

[0010] Furthermore, the No. 2 pull rod includes an upper part, a middle part and a lower part of an integrated structure. The upper part and the lower part are both U-shaped plates, and the U-shaped grooves of the two are perpendicular to each other. The middle part is a rectangular structure, and the upper part is provided with an upper mounting hole for installing the No. 1 pull rod shaft, so that the No. 2 pull rod and the No. 1 rocker arm are fixedly connected; the lower part is provided with a lower mounting hole for installing the pull rod shaft.

[0011] Furthermore, the hook includes a hook connecting rod, a hook head and a protrusion. The protrusion is provided on the inner side of the hook connecting rod, and the hook head is installed at the other end. The hook head is a U-shaped plate. The hook head is fixedly connected to one end of the No. 2 rocker arm through the hook shaft. The protrusion is located on the center line of the U-shaped groove of the hook head and contacts the side plate of the bracket.

[0012] Furthermore, a card slot is provided on each side of the No. 1 limit block, and each card slot is used to limit a pull hook; the No. 2 limit block includes a baffle and limit plates symmetrically installed on both sides thereof, and the end of the No. 1 limit block is fixedly connected to the baffle, so that two limit slots are formed between the No. 1 limit block and the limit plate, and each limit slot is used to limit a pull hook.

[0013] Compared with the prior art, the spacecraft compression release mechanism compression loading device of the present invention has the following advantages:

[0014] (1) The spacecraft compression and release mechanism compression loading device described in the present invention has a compact structure and a small operating space. The tension is decomposed step by step through the seesaw principle, and the force is evenly and reliably applied during the loading process, which solves the problem of difficulty in uniform loading of the W-shaped compression belt.

[0015] (2) The spacecraft compression and release mechanism compression loading device of the present invention is connected to a tension sensor to achieve controllable loading force value. Multiple compression loading fixtures are used together to meet the multi-point compression working conditions of the spacecraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 A schematic diagram of a compression loading device of a spacecraft compression release mechanism according to an embodiment of the present invention;

[0018] Figure 2 This is a front view of a compression loading device of a spacecraft compression release mechanism according to an embodiment of the present invention;

[0019] Figure 3 A bottom view of the compression loading device of the spacecraft compression release mechanism according to an embodiment of the present invention;

[0020] Figure 4 is a schematic diagram of a bracket according to an embodiment of the present invention;

[0021] Figure 5 Schematic diagram of a first pull rod according to an embodiment of the present invention;

[0022] Figure 6 Schematic diagram of rocker arm No. 1 according to an embodiment of the present invention;

[0023] Figure 7 A schematic diagram of a second pull rod according to an embodiment of the present invention;

[0024] Figure 8 A schematic diagram of a retractor according to an embodiment of the present invention;

[0025] Figure 9 A schematic diagram of a tension sensor according to an embodiment of the present invention;

[0026] Figure 10 A schematic diagram of a No. 1 limit block according to an embodiment of the present invention;

[0027] Figure 11 This is a schematic diagram of the second limiting block described in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1-Bracket; 101-Top plate; 1011-Light hole; 102-Side plate No. 1; 1021-Mounting slot No. 1; 1022-Side plate mounting hole; 1023-Card table No. 1; 103-Side plate No. 2; 1031-Mounting hole No. 2; 1032-Arc slot; 1033-Card table No. 2; 2-Tension sensor; 3-Tie rod No. 1; 31-Connecting rod; 32-Connecting part; 33-Tie rod connecting rod No. 1 Connecting hole; 4-rocker arm No. 1; 5-pull rod No. 2; 51-upper part; 52-middle part; 53-lower part; 6-rocker arm No. 2; 7-hook; 71-hook connecting rod; 72-hook head; 73-protrusion; 8-hook shaft; 9-pull rod shaft No. 1; 10-pull rod shaft No. 2; 11-rotating shaft; 12-limit block No. 1; 121-slot; 13-limit block No. 2; 131-baffle; 132-limit block. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0034] A spacecraft compression release mechanism compression loading device, such as Figures 1 to 11As shown, it includes a bracket 1, a tension sensor 2, a No. 1 pull rod 3, a No. 1 rocker arm 4, a No. 2 pull rod 5, a No. 2 rocker arm 6, a hook 7, a hook shaft 8, a No. 1 pull rod shaft 9, a No. 2 pull rod shaft 10, a rotating shaft 11, a No. 1 limit block 12 and a No. 2 limit block 13. The bracket 1 is connected to the rotating shaft 11 at the top, and the rotating shaft 11 is connected to the No. 1 pull rod 3 at the bottom through the tension sensor 2. A No. 2 pull rod 5 is symmetrically installed at both ends below the No. 1 pull rod 3, and a hook 7 is symmetrically installed at both ends below each No. 2 pull rod 5. The bottom of the bracket 1 is provided with a No. 1 limit block 12 and a No. 2 limit block 13. The No. 1 limit block 12 and the No. 2 limit block 13 limit the four hooks 7. The four hooks 7 provide tension for the W-type compression belt. The compression loading device described in this application is mainly suitable for preload force of the new belt-type compression release mechanism of spacecraft during ground assembly. This application uses the seesaw principle to decompose the tension step by step, solving the problem of uniform loading of the W-shaped compression belt. Connecting a tension sensor makes the loading force controllable. Using multiple compression loading fixtures together can meet the multi-point compression conditions of spacecraft.

[0035] like Figure 4 As shown, the bracket 1 includes a top plate 101, a No. 1 side plate 102 and a No. 2 side plate 103. A light hole 1011 is provided in the middle of the top plate 101, and the No. 1 side plate 102 and the No. 2 side plate 103 are symmetrically installed on both sides of the top plate 101. A No. 1 clamping platform 1023 is provided at the bottom of the No. 1 side plate 1023, a No. 1 mounting groove 1021 is provided at the bottom of the No. 1 clamping platform 1023, a side plate mounting hole 1022 is provided on one side of the No. 1 mounting groove 1021, a No. 2 clamping platform 1033 is provided at the bottom of the No. 2 side plate 103, a No. 2 mounting hole 1031 is provided at the bottom of the No. 2 clamping platform 1033, and an arc groove 1032 is provided on one side of the No. 2 mounting hole 1031.

[0036] After the top of the rotating shaft 11 passes through the light hole 1011 , a nut is installed to limit it, and the lower end is fixedly connected to the top of the tension sensor 2 .

[0037] like Figure 1 and Figure 2 As shown, in one or more embodiments, a No. 1 rocker arm 4 is fixedly installed below the No. 1 pull rod 3 through a No. 2 pull rod shaft 10, a No. 2 pull rod 5 is installed at both ends of the No. 1 rocker arm 4 through a No. 1 pull rod shaft 9, a No. 2 rocker arm 6 is fixedly installed below each No. 2 pull rod 5 through a pull rod shaft, and a hook 7 is installed at both ends of each No. 2 rocker arm 6 through a hook shaft 8, forming a total of four hooks 7.

[0038] Four hooks 7 provide tension for the W-shaped compression belt, transmitting this tension to the ends of the second rocker arm 6 via the hook shaft 8. The two second rocker arms 6 then transmit the four tensions to the two second tie rods 5 via the hook shaft 8, creating two tensions. This tension is then transmitted to the ends of the first rocker arm 4 via the first tie rod shaft 9. The tension on both sides of the first rocker arm 4 is transmitted to the first tie rod 3 via the second tie rod shaft 10, forming a concentrated tension. The tension sensor 2 transmits the tension to the rotating shaft 11 and records the tension value. The tension sensor 2 is connected to a display via a cable to display the tension value in real time (a tension sensor with a display is also available). The rotating shaft 11 transmits the tension to the bracket 1 via a nut. Bracket 1 serves as the primary load-bearing and support for the compression and force-applying fixture. The tension on the rotating shaft 11 is gradually decomposed into four quarters of tension in the same direction, which are then transmitted to the W-shaped compression belt. This ensures that the compression belt is evenly stressed and does not experience uneven loading. The tension sensor 2 displays the force value in real time to ensure the loading process. The clamping force is controllable (a dedicated person is assigned to a dedicated post and always watches the test. If the value exceeds the limit, it will be called back) to avoid overload.

[0039] like Figure 5 As shown, the No. 1 pull rod 3 includes a connecting rod 31 and a connecting portion 32 fixedly connected thereto below. The connecting portion 32 is a U-shaped plate. A No. 1 pull rod connecting hole 33 is symmetrically provided below the connecting portion 32. The No. 1 pull rod connecting hole 33 is used to install the No. 2 pull rod shaft 10. The connecting plate 31 is fixedly connected to the bottom of the tension sensor 2.

[0040] like Figure 7 As shown, the No. 2 tie rod 5 includes an upper part 51, a middle part 52 and a lower part 53 of an integrated structure. The upper part 51 and the lower part 53 are both U-shaped plates, and the U-shaped grooves of the two are perpendicular to each other. The middle part is rectangular, and the upper part 51 is provided with an upper mounting hole, which is used to install the No. 1 tie rod shaft 9, so that the No. 2 tie rod 5 and the No. 1 rocker arm 4 are fixedly connected; the lower part 52 is provided with a lower mounting hole, which is used to install the tie rod shaft.

[0041] like Figure 6 As shown, preferably, the structures of the No. 1 rocker arm 4 and the No. 2 rocker arm 6 are the same, the No. 1 rocker arm 4 is an elliptical plate, and three through holes are evenly distributed on the No. 1 rocker arm 4. The middle through hole is used to install the No. 2 pull rod shaft 10, so that the No. 1 pull rod 3 and the No. 1 rocker arm 4 are fixedly connected, and the through holes on both sides are used to install the No. 1 pull rod shaft 9.

[0042] like Figure 8 As shown, the hook 7 includes a hook connecting rod 71, a hook head 72 and a protrusion 73. The protrusion 73 is provided on the inner side of the hook connecting rod 71, and the hook head 72 is installed at the other end. The hook head 72 is a U-shaped plate. The hook head 72 is fixedly connected to one end of the No. 2 rocker arm 6 through the hook shaft 8, and the protrusion 73 is located on the center line of the U-shaped groove of the hook head 72.

[0043] Preferably, the structures of the hook head 72, the connecting portion 32, and the upper portion 51 are all the same, and the force is evenly applied.

[0044] like Figure 10 and Figure 11 As shown, the first limiting block 12 is a T-shaped plate, and a slot 121 is provided on each side. The second limiting block 13 includes a baffle 131 and a limiting plate 132 symmetrically installed on both sides thereof, and the limiting plate 132 is an L-shaped limiting block. In this embodiment, the first limiting block 12 is inserted between the first card platform 1023 and the second card platform 1033, so that the hook connecting rod 71 of the two retractors 7 is respectively located in a slot 121. The end of the first limiting block 12 is fixedly connected to the baffle 131, so that two limiting grooves are formed between the first limiting block 12 and the limiting plate 132, each of which is used to place a retractor connecting rod 71, and the protrusions 73 of the four retractors 7 are in contact with the side plates of the bracket 1. At this time, the four retractors 7 are all limited (i.e., the first limiting block 12 and the second limiting block 13 hold the four retractors 7), ensuring that the retractors 7 do not fall out during the compression and force application process.

[0045] The working principle of a compression loading device of a spacecraft compression release mechanism is as follows:

[0046] (1) Power on the display of the tension sensor 2 of the compression loading device of the present application (when a tension sensor with a display is used, power the tension sensor directly), the tension sensor will automatically reset to zero, and it can be used only after confirming that the display value is below 0.5 kg.

[0047] (2) Manually press the W-shaped compression belt into the compression seat and limit it as a pre-compression operation before loading.

[0048] (3) Fit the bracket 1 with the pre-tightening seat of the clamping and releasing mechanism, connect the four hooks 7 of the clamping and loading device with the four process holes of the pre-tightening cap of the clamping and releasing mechanism, hold the four hooks 7 with the No. 1 limit block 12 and the No. 2 limit block 13, connect them with screws, and check that there is no jamming when sliding with the hook 7, and the movable clearance is 0.5mm~1mm, which prevents the hook 7 from being disconnected from the pre-tightening cap during the loading process, but does not affect the translation of the hook 7.

[0049] (4) Hold an open-end wrench and place it on the square position at the upper end of the shaft 11. While keeping the shaft 11 stationary, hold another wrench and turn the nut connected to the shaft 11. The nut torque is converted into the tension of the W-type compression band through the compression loading device. The display of the tension sensor 2 shows the loading force value. Slowly turn the nut, and the W-type compression band slowly stretches until the load reaches the design value. Since a dedicated person is constantly monitoring the inspection, if the value exceeds the set range, the staff will retract the nut.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A spacecraft compression and release mechanism compression loading device, characterized by: It includes a bracket, a hook and a rotating shaft. The upper part of the bracket is connected to the rotating shaft limit, and the lower part of the rotating shaft is connected to the No. 1 pull rod through a tension sensor. A No. 2 pull rod is symmetrically installed at both ends below the No. 1 pull rod, and a hook is symmetrically installed at both ends below each No. 2 pull rod. The bottom of the bracket is provided with a No. 1 limit block and a No. 2 limit block. The No. 1 limit block and the No. 2 limit block limit the four hooks. The four hooks are used to connect with the four process holes of the pre-tightening cap of the spacecraft compression release mechanism to provide tension for the W-shaped compression belt; The bracket includes a top plate, a No. 1 side plate and a No. 2 side plate. A light hole is provided in the middle of the top plate. The No. 1 side plate and the No. 2 side plate are symmetrically installed on both sides of the top plate. A No. 1 card platform is provided at the bottom of the No. 1 side plate, and a No. 2 card platform is provided at the bottom of the No. 2 side plate. A No. 1 limit block is placed above the No. 2 card platform and the No. 1 card platform. A No. 1 rocker arm is fixedly installed below the No. 1 tie rod through a No. 2 tie rod shaft. A No. 2 tie rod is installed at each end of the No. 1 rocker arm through a No. 1 tie rod shaft. A No. 2 rocker arm is installed below each No. 2 tie rod through a tie rod shaft. A hook is installed at each end of each No. 2 rocker arm through a hook shaft, forming a total of four hooks. The hook includes a hook connecting rod, a hook head and a protrusion. A protrusion is provided on the inner side of one end of the hook connecting rod, and a hook head is installed on the other end. The hook head is a U-shaped plate. The hook head is fixedly connected to one end of the second rocker arm through the hook shaft. The protrusion is located on the center line of the U-shaped groove of the hook head. There is a card slot on each side of the No. 1 limit block, and each card slot is used to limit a pull hook; the No. 2 limit block includes a baffle and limit plates symmetrically installed on both sides thereof. The end of the No. 1 limit block is fixedly connected to the baffle, so that two limit slots are formed between the No. 1 limit block and the limit plate, and each limit slot is used to limit a pull hook.

2. A spacecraft compression and release mechanism compression and loading device according to claim 1, characterized in that: After the shaft passes through the light hole, install a nut to limit it.

3. The spacecraft compression and release mechanism compression and loading device according to claim 1, characterized in that: The No. 1 pull rod includes a connecting rod and a connecting portion fixedly connected thereto below. The connecting portion is a U-shaped plate. The connecting rod is fixedly connected to the bottom of the tension sensor.

4. The spacecraft compression and release mechanism compression and loading device according to claim 1, characterized in that: The No. 2 pull rod includes an upper part, a middle part and a lower part of an integrated structure. The upper part and the lower part are both U-shaped plates, and the U-shaped grooves of the two are perpendicular to each other. The middle part is a rectangular structure. The upper part is provided with an upper mounting hole for installing the No. 1 pull rod shaft, so that the No. 2 pull rod and the No. 1 rocker arm are fixedly connected; the lower part is provided with a lower mounting hole for installing the pull rod shaft.

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