A hot knife unlocked compression release device and compression release method

Abstract

The application relates to a hot-knife unlocking compression release device and a compression release method. The hot-knife unlocking compression release device comprises a seat body, a hot-melting mechanism, a pre-tightening rod, a guide pin and a rope body. The hot-melting mechanism is installed above one end of the seat body, the pre-tightening rod is installed above the other end of the seat body, the guide pin is installed in the middle of the seat body and is arranged in parallel with the pre-tightening rod, and the seat body is provided with a containing groove for placing a device to be compressed. One end of the rope body is fixed on the device to be compressed, the other end of the rope body is fixed on the pre-tightening rod, the middle part of the rope body passes through the guide pin and compresses the device to be compressed, and the middle part of the rope body is arranged adjacent to heating wires of the hot-melting mechanism. The hot-knife unlocking compression release device is used for compressing the device to be compressed in the containing groove by the rope body when unlocking is not needed, and the rope body is melted by the heating wires of the hot-melting mechanism when unlocking is needed, so that the device to be compressed is unlocked.

Description

Technical Field

[0001] This invention relates to the field of aerospace technology, specifically to a hot knife unlocking clamping and release device and method, used for components on spacecraft that need to be unlocked, separated, or deployed. Background Technology

[0002] Compression release devices are common in the aerospace field, primarily used for components on spacecraft that need to be unlocked, separated, or deployed. Currently, most satellites and spacecraft are launched into predetermined orbits using launch vehicles. Satellites, spacecraft, and launch vehicles need to be locked before launch, unlocking and separating upon reaching the designated orbit. Similarly, various components carried by satellites and spacecraft, limited by the size of the rocket fairing, must be in a retracted state before launch, deploying or separating after entering orbit to complete their corresponding tasks. In this case, compression release devices are needed to compress the components that need to be deployed or separated, and then unlock them after entering orbit. Summary of the Invention

[0003] In order to solve one or more technical problems existing in the prior art, the present invention provides a hot knife unlocking clamping and releasing device and a clamping and releasing method.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A hot knife unlocking clamping release device includes a base, a hot melt mechanism, a pre-tightening rod, a guide pin and a rope. The hot melt mechanism is installed above one end of the base, the pre-tightening rod is installed above the other end of the base, the guide pin is installed in the middle of the base and is arranged parallel to the pre-tightening rod, and the base is provided with a receiving groove for placing the device to be clamped.

[0005] One end of the rope is fixed to the device to be pressed, and the other end of the rope is fixed to the pretensioning rod. The middle part of the rope passes around the guide pin and presses against the device to be pressed. The middle part of the rope is also adjacent to the heating wire of the hot melt mechanism.

[0006] The beneficial effects of the present invention are as follows: The present invention provides a hot knife unlocking clamping and releasing device. When unlocking is not required, the device to be clamped is clamped in the receiving groove by using a rope. When unlocking is required, the heating wire of the hot melt mechanism melts the rope to achieve unlocking of the device to be clamped.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the base is provided with a plurality of receiving slots arranged side by side along the direction from the pretensioning rod to the hot-melting mechanism, each receiving slot being used to set a device to be pressed; one end of the rope is fixed to a device to be pressed near the hot-melting mechanism, and the other end of the rope passes through the heating wire and around the guide pin to press the remaining devices to be pressed, and is then fixed to the pretensioning rod.

[0009] Furthermore, the heating wire of the hot-melt mechanism has an arc-shaped structure and is arranged below a device to be pressed near the hot-melt mechanism. The guide pin is located diagonally below the heating wire. The other end of the rope passes downward through the heating wire and around the guide pin, then goes upward around the remaining device to be pressed, and is finally secured to the pre-tensioning rod.

[0010] Furthermore, the central axis of the receiving groove is parallel to the preload rod.

[0011] Furthermore, the pretensioning rod includes an integrally connected threaded section, a smooth cylindrical section, and a bolt head. The bolt head has a hexagonal groove on its end face. The threaded section of the pretensioning rod is threadedly connected to the side wall of the seat. The smooth cylindrical section has a through hole for securing the rope system. The rope can be wound around the smooth cylindrical section.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the threaded section is connected to the side wall thread, and the excess rope can be wound around the smooth cylindrical section by rotating the threaded section, so as to ensure that the rope is always taut.

[0013] Furthermore, the hot-melt mechanism also includes a fixed base, a PCB board, a connecting rod, and a tension spring. The fixed base is fixed to the base body, and the connecting rod passes through the fixed base and can slide relative to the fixed base. The connecting rod is arranged perpendicularly to the guide pin. The tension spring is sleeved on the connecting rod and is in a compressed state. One end of the tension spring is fixed to the connecting rod, and the other end abuts against the fixed base. The end of the connecting rod that passes through the fixed base is provided with a PCB board, and both ends of the heating wire are respectively connected to the PCB board.

[0014] Furthermore, the connecting rod is provided with two parallel and spaced-apart rods, which slide through the fixed base respectively, and each connecting rod is fitted with a compressed tension spring.

[0015] Furthermore, a retaining ring is provided on the outer wall of one end of the connecting rod that passes through the fixing seat, and the retaining ring is located between the PCB board and the fixing seat.

[0016] Furthermore, the seat includes two parallel and opposite side walls, the two ends of the guide pin are respectively perpendicularly connected to the two side walls, the preload rod is located between the two side walls and is perpendicularly fixedly connected to one of the side walls; the hot melt mechanism is installed between the two side walls.

[0017] A method for releasing a hot knife clamp, using the aforementioned clamping release device, includes the following steps:

[0018] S1, Place the device to be pressed into the receiving groove on the base, use the rope to press and fix the device to be pressed, and keep the rope taut by turning the pre-tightening rod;

[0019] S2, when unlocking is required, the hot melt mechanism supplies power to heat the heating wire and melt the rope, releasing the clamping force on the device to be clamped in the accommodating groove.

[0020] The beneficial effects of the present invention are: the clamping and releasing method of the present invention can achieve stable clamping and unlocking of the device to be clamped. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the hot knife unlocking clamping and releasing device of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the base of the present invention;

[0023] Figure 3 This is a three-dimensional structural schematic diagram of the hot-melt mechanism of the present invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the preload rod of the present invention;

[0025] Figure 5 This is a side view of the internal structure of the hot knife unlocking clamping and releasing device of the present invention.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Base; 11. Receiving groove; 12. Side wall; 13. Mounting boss;

[0028] 2. Equipment to be pressed;

[0029] 3. Preload rod; 31. Threaded section; 32. Smooth cylindrical section; 33. Bolt head; 34. Hexagonal slot; 35. Through hole;

[0030] 4. Guide pin; 5. Rope body;

[0031] 6. Heating wire; 61. Mounting base; 62. PCB board; 63. Connecting rod; 64. Tension spring; 65. Positive wire; 66. Negative wire; 67. Mounting plate; 68. Retaining ring; 69. Mounting rod. Detailed Implementation

[0032] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0033] like Figures 1-5As shown, a hot-knife unlocking clamping and releasing device of this embodiment includes a base 1, a hot-melt mechanism, a pre-tensioning rod 3, a guide pin 4, and a rope 5. The hot-melt mechanism is installed above one end of the base 1, the pre-tensioning rod 3 is installed above the other end of the base 1, the guide pin 4 is installed in the middle of the base 1 and arranged parallel to the pre-tensioning rod 3, and the base 1 is provided with a receiving groove 11 for placing the device to be clamped 2; one end of the rope 5 is fixed to the device to be clamped 2, the other end of the rope 5 is fixed to the pre-tensioning rod 3, the middle part of the rope 5 passes around the guide pin 4 and clamps the device to be clamped 2, and the middle part of the rope 5 is also arranged adjacent to the heating wire 6 of the hot-melt mechanism.

[0034] like Figure 1 , Figure 2 and Figure 5 As shown, the seat 1 in this embodiment is provided with a plurality of receiving grooves 11 arranged side by side along the direction from the pretensioning rod 3 to the hot-melt mechanism. Each receiving groove 11 is used to set a device 2 to be pressed. One end of the rope 5 is fixed to a device 2 to be pressed near the hot-melt mechanism. The other end of the rope 5 passes through the heating wire 6 and around the guide pin 4 to press the remaining devices 2 to be pressed, and then is fixed to the pretensioning rod 3.

[0035] Specifically, multiple receiving slots 11 are arranged in parallel, preferably two receiving slots. Each receiving slot 11 can be a continuous single slot or multiple discontinuous slots. The receiving slots 11 can be arc-shaped slots.

[0036] like Figure 3 As shown, in this embodiment, the heating wire 6 of the hot-melt mechanism has an arc-shaped structure and is arranged below a device 2 to be pressed near the hot-melt mechanism. The guide pin 4 is located diagonally below the heating wire 6. The other end of the rope 5 passes downward through the heating wire 6 and around the guide pin 4, then passes upward around the remaining device 2 to be pressed, and finally is fixed to the pre-tensioning rod 3.

[0037] like Figure 1 As shown, in this embodiment, the central axis of the receiving groove 11 is parallel to the pre-tightening rod 3. The shape of the receiving groove 11 is similar to the shape of the device to be pressed, so that the device to be pressed is stably pressed in the receiving groove.

[0038] like Figure 1 and Figure 4As shown, the pretensioning rod 3 in this embodiment includes an integrally connected threaded section 31, a smooth cylindrical section 32, and a bolt head 33. The bolt head 33 has a hexagonal groove 34 on its end face. The threaded section 31 of the pretensioning rod 3 is threadedly connected to the side wall of the base 1. The smooth cylindrical section 32 has a through hole 35 for securing the rope 5, allowing the rope 5 to be wound around it. The threaded section is threaded to the side wall, and excess rope can be wound around the smooth cylindrical section by rotating the threaded section, ensuring the rope is always taut. The hexagonal groove can be used with a hexagonal wrench to tighten the pretensioning rod. After tightening, a corresponding nut is fitted onto the threaded section and tightened to prevent the pretensioning rod from rotating in the opposite direction.

[0039] like Figure 1 and Figure 3 As shown, the hot-melt mechanism in this embodiment further includes a fixed base 61, a PCB board 62, a connecting rod 63, and a tension spring 64. The fixed base 61 is fixed to the base 1. The connecting rod 63 passes through the fixed base 61 and can slide relative to the fixed base 61. The connecting rod 63 is arranged perpendicularly to the guide pin 4. The tension spring 64 is sleeved on the connecting rod 63 and is in a compressed state. One end of the tension spring 64 is fixed to the connecting rod 63, and the other end abuts against the fixed base 61. The PCB board 62 is provided at one end of the connecting rod 63 that passes through the fixed base 61. The two ends of the heating wire 6 are respectively connected to the PCB board 62. Two positive wires 65 and two negative wires 66 are connected to the PCB board 62. The fixed base 61 is fixed to the base 1 by a mounting plate 67.

[0040] like Figure 1 and Figure 3 As shown, in this embodiment, two connecting rods 63 are arranged in parallel at intervals. The two connecting rods 63 slide through the fixing base 61 respectively, and each connecting rod 63 is fitted with a compressed tension spring 64. The ends of the two connecting rods 63 facing away from the PCB board 62 can be connected by a fixing rod 69. The PCB board 62 can be fixed to the connecting rods.

[0041] like Figure 1 , Figure 3 and Figure 5 As shown, in this embodiment, a retaining ring 68 is also provided on the outer wall of the end of the connecting rod 63 that passes through the fixing base 61. The retaining ring 68 is located between the PCB board 62 and the fixing base 61.

[0042] like Figure 1 and Figure 2As shown, the base 1 in this embodiment includes two parallel and opposite sidewalls 12. The two ends of the guide pin 4 are perpendicularly connected to the two sidewalls 12 respectively. The pre-tightening rod 3 is located between the two sidewalls 12 and is perpendicularly fixedly connected to one of the sidewalls 12. The hot-melt mechanism is installed between the two sidewalls 12. The hot-melt mechanism can be fixed between the two sidewalls 12 of the base 1 by the mounting plate 67. The base 1 is provided with multiple mounting holes for connecting the mounting plate 67. One sidewall 12 of the base 1 is provided with a threaded hole. The sidewall 12 opposite to the threaded hole on the base 1 is provided with a corresponding open hole for passing a screwdriver through the hexagonal slot and tightening the pre-tightening rod. Multiple mounting bosses 13 are provided on the base, and each mounting boss 13 is provided with a connecting hole for installing the entire clamping and releasing device.

[0043] like Figure 1 As shown, the two sidewalls 12 in this embodiment can be connected at their top midpoints via a connecting plate. Two receiving slots 11 are respectively provided on both sides of the connecting plate.

[0044] In this embodiment, the device to be pressed in the receiving groove near the hot-melt mechanism is tangent to the guide pin below it in the radial direction, ensuring that the heating wire of the hot-melt mechanism is perpendicular to the rope between the adjacent device to be pressed and the guide pin, thus preventing the device from contacting the guide pin after vibration, which would cause some of the heat to be conducted to the guide pin during heating.

[0045] In this embodiment, the center of the guide pin is made of metal, and the part of the guide pin that directly contacts the rope is made of heat-insulating material to prevent the heating wire of the heat-melting mechanism from accidentally touching it and causing the rope to fail to melt.

[0046] This embodiment of a hot-knife unlocking clamping and releasing device uses a rope to press the device to be clamped into the receiving groove when unlocking is not required. When unlocking is required, the heating wire of the hot-melt mechanism melts the rope to unlock the device to be clamped.

[0047] This embodiment also provides a hot knife unlocking clamping release method, which is implemented using the above-mentioned clamping release device and includes the following steps:

[0048] S1, place the device to be pressed 2 in the receiving groove 11 on the base 1, use the rope 5 to press and fix the device to be pressed, and keep the rope 5 taut by turning the pre-tightening rod 3.

[0049] S2, when unlocking is required, the hot melt mechanism supplies power to heat the heating wire 6 and melt the rope 5, releasing the clamping force on the device 2 to be clamped in the accommodating groove 11.

[0050] The clamping and releasing method of this embodiment can achieve stable clamping and unlocking of the device to be clamped.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hot-blade unlocking clamping release device, characterized in that, It includes a base, a hot-melt mechanism, a pre-tightening rod, a guide pin, and a rope. The hot-melt mechanism is installed above one end of the base, the pre-tightening rod is installed above the other end of the base, the guide pin is installed in the middle of the base and is arranged parallel to the pre-tightening rod, and the base is provided with a receiving groove for placing the equipment to be pressed. One end of the rope is fixed to the device to be pressed, and the other end of the rope is fixed to the pre-tensioning rod. The middle part of the rope passes around the guide pin and presses against the device to be pressed. The middle part of the rope is also arranged near the heating wire of the hot melt mechanism. The base is provided with multiple receiving slots arranged side by side along the direction from the pretensioning rod to the hot-melt mechanism. Each receiving slot is used to set one device to be pressed. One end of the rope is fixed to one device to be pressed near the hot-melt mechanism. The other end of the rope passes through the heating wire and around the guide pin to press the remaining devices to be pressed, and then is fixed to the pretensioning rod. The heating wire of the hot melt mechanism has an arc-shaped structure and is arranged below a device to be pressed near the hot melt mechanism. The guide pin is located diagonally below the heating wire. The other end of the rope passes downward through the heating wire and around the guide pin, then goes upward around the remaining device to be pressed, and is finally fixed to the pretensioning rod. The central axis of the receiving groove is parallel to the preload rod; The pretensioning rod includes an integrally connected threaded section, a smooth cylindrical section, and a bolt head. The bolt head has a hexagonal groove on its end face. The threaded section of the pretensioning rod is threaded to the side wall of the seat. The smooth cylindrical section has a through hole for securing the rope system. The rope can be wound around the smooth cylindrical section. The seat includes two parallel and opposite side walls, the two ends of the guide pin are respectively perpendicularly connected to the two side walls, the preload rod is located between the two side walls and is perpendicularly fixedly connected to one of the side walls; the hot melt mechanism is installed between the two side walls. The compression release method using the aforementioned compression release device includes the following steps: S1, Place the device to be pressed into the receiving groove on the base, use the rope to press and fix the device to be pressed, and keep the rope taut by turning the pre-tightening rod; S2, when unlocking is required, the hot melt mechanism supplies power to heat the heating wire and melt the rope, releasing the clamping force on the device to be clamped in the accommodating groove; The hot-melting mechanism further includes a fixed base, a PCB board, a connecting rod, and a tension spring. The fixed base is fixed to the base body. The connecting rod passes through the fixed base and can slide relative to the fixed base. The connecting rod is arranged perpendicularly to the guide pin. The tension spring is sleeved on the connecting rod and is in a compressed state. One end of the tension spring is fixed to the connecting rod, and the other end abuts against the fixed base. The PCB board is provided at one end of the connecting rod that passes through the fixed base. The two ends of the heating wire are respectively connected to the PCB board. Two connecting rods are arranged in parallel and spaced apart. The two connecting rods slide through the fixed base respectively. A compressed tension spring is sleeved on each connecting rod. A retaining ring is also provided on the outer wall of the end of the connecting rod that passes through the fixed base. The retaining ring is located between the PCB board and the fixed base.

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