Variable volume parachute high pressure packing device

Abstract

A variable volume parachute pressure packaging device, comprising: a round baffle and a flat baffle are sequentially and spaced apart to form a surrounding structure with open ends and variable cross-sectional size; the round baffle and the adjacent flat baffle are connected through a slide structure; the round baffle is connected to the bottom plate mechanism through the slide block mechanism; the bottom plate mechanism is used to drive the slide block mechanism to move; the slide block mechanism can drive the round baffle to move relative to the bottom plate mechanism, so as to change the cross-sectional size of the surrounding structure. The present application is mainly suitable for large parachute and wing parachute high pressure packaging of spacecraft return landing system, solves the problem of repeated design and manufacturing of packaging device for different volume parachute, at the same time overcomes the problem that the air in the parachute cannot be discharged in time during the packaging process, and the packaging device is too large to transport during the field test. It can be widely used in high pressure packaging scene of large parachute in spacecraft return, heavy air drop, extraterrestrial exploration mission.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of space return and landing, and relates to a variable-volume high-pressure folding packaging technology applied to large parachutes and parafoils. BACKGROUND

[0002] Flexible deployable aerodynamic deceleration technology is a key technology for further deceleration of a spacecraft after entering an atmospheric environment and finally achieving non-damage landing. Parachutes and parafoils (hereinafter collectively referred to as parachutes) composed of special textile materials are core devices for realizing aerodynamic deceleration function. A recovery landing system is usually arranged inside a spacecraft, and a parachute is packaged in a parachute cabin in a folded and compressed manner and is launched together with the spacecraft. Since the space inside the spacecraft is very valuable, every bit of saved space can carry more effective load. Therefore, under the premise of a certain weight, the smaller the occupied space of the parachute after folding and packaging is, the better. At present, a packaging device is generally used in combination with a press to realize high-density packaging. For example, the packaging density of a disc-seam band parachute of a Mars explorer of the United States is 0.7 kg / L, and the packaging density of a main parachute of a CPAS multi-purpose spacecraft of the United States is as high as 0.75 kg / L.

[0003] In order to realize uniform density distribution of the packaged parachute in the parachute bag, a columnar parachute bag with a cross section of a circular-angled square is widely used in the packaging process of large parachutes with a volume of more than 100 L. At present, high-pressure packaging devices suitable for parachutes returned by spacecrafts are all of fixed volume and cannot adjust the packaging volume according to the size change of the parachute bag. In the traditional parachute development mode, a special packaging device needs to be designed for each parachute bag with a different cross-sectional size, which leads to a large amount of repetitive design work, increases the design and time cost, and causes a high idle rate of equipment. In addition, the traditional parachute packaging device does not have a gas vent, and air inside the parachute bag cannot be discharged in time when the parachute bag bears a large packaging pressure, which is easy to cause local damage of the parachute bag and the inner canopy. Therefore, it is urgent to design a parachute packaging device capable of adjusting the volume of a cavity according to the shape of the parachute bag and having good exhaust performance. SUMMARY

[0004] The technical problem solved by the application is to overcome the shortcomings of the prior art and provide a variable-volume parachute high-pressure packaging device. The main purpose of the application is to solve the problems of repetitive design and manufacture of a circular-angled square parachute bag parachute packaging device and the inability of air inside the parachute bag to be discharged in time during the packaging process, and to provide a variable-volume parachute high-pressure packaging device, realize reuse of equipment, improve development efficiency, and save design and manufacturing cost and time.

[0005] The technical solution of the application is as follows:

[0006] A variable-volume parachute high-pressure packaging device, comprising: a round baffle, a flat baffle, a bottom plate mechanism and a slider mechanism;

[0007] The round baffles and the flat baffles are sequentially and spacedly arranged to form a surrounding structure with open ends and variable cross-sectional size;

[0008] The round baffles and the adjacent flat baffles are connected through a sliding structure; the round baffles are connected to the bottom plate mechanism through the slider mechanism;

[0009] The bottom plate mechanism is used to drive the movement of the slider mechanism, so that the slider mechanism can drive the round baffles to move relative to the bottom plate mechanism, thereby changing the cross-sectional size of the surrounding structure and making the surrounding structure move towards the center to compress and fix the parachute package.

[0010] Preferably, the connecting part of the round baffle and the flat baffle has an overlapping area.

[0011] Preferably, it further comprises an adjusting mechanism and a locking mechanism;

[0012] The two adjacent round baffles are connected through the adjusting mechanism, and the adjusting mechanism is used to change the cross-sectional size of the surrounding structure;

[0013] The two adjacent round baffles are connected through the locking mechanism, and the locking mechanism is used to make the surrounding structure circumferentially package and pre-press the parachute package.

[0014] Preferably, at least two sets of adjusting mechanisms are arranged on each packaging device, and the two sets of adjusting mechanisms are arranged on the two symmetrical surfaces of the packaging device.

[0015] Preferably, at least one set of locking mechanism is arranged on each vertical surface of the packaging device.

[0016] Preferably, the round baffle is provided with a horizontal waist-shaped hole as a sliding channel.

[0017] Preferably, the flat baffle comprises a second side baffle, a round pulley and a bushing;

[0018] The second side baffle is provided with a plurality of exhaust holes and a plurality of round pulleys, each round pulley corresponds to a sliding channel, and the round pulley is inserted into the sliding channel and can slide along the sliding channel;

[0019] The round pulley can rotate relative to the second side baffle about an axis;

[0020] The round pulley is externally sleeved with a bushing.

[0021] Preferably, the adjusting mechanism comprises a stepper motor, a controller, a shaft coupling, a lead screw and a nut;

[0022] The nut, the screw rod and the shaft coupling are connected in sequence, the screw rod and the shaft coupling can be translated along the axial direction, and the shaft coupling can drive the screw rod to rotate; the controller controls the stepping motor to drive the shaft coupling to rotate;

[0023] The nut and the controller are fixedly installed on the round baffle.

[0024] Preferably, the bottom plate mechanism comprises: an upper bottom plate, a lower bottom plate, a synchronous disc, a connecting rod, a central fixed shaft and a toothed disc.

[0025] One end of the connecting rod is hinged to the synchronous disc, and the other end of the connecting rod is hinged to the sliding block mechanism.

[0026] The upper bottom plate and the lower bottom plate are fixedly connected, a long waist hole is processed on the upper bottom plate as a sliding groove, and the sliding block mechanism can move along the sliding groove.

[0027] The synchronous disc and the toothed disc are installed between the upper bottom plate and the lower bottom plate through the central fixed shaft.

[0028] The toothed disc is arranged below the synchronous disc, the synchronous disc is driven to rotate through the toothed disc, the rotational displacement of the synchronous disc is converted into the linear displacement of the sliding block mechanism along the sliding groove of the upper bottom plate through the connecting rod, the round baffle is driven to slide, and then the size of the space in the surrounding baffle structure is changed.

[0029] Preferably, the sliding block mechanism comprises: a bottom sliding block and an angle block.

[0030] Each round baffle is fixedly connected with one angle block, the bottom sliding block and the angle block are fixedly connected, the bottom sliding block and the angle block are located on both sides of the upper bottom plate, and the bottom sliding block and the angle block can slide along the sliding groove of the upper bottom plate.

[0031] The round baffle is connected with the synchronous disc through the bottom sliding block and the connecting rod.

[0032] Compared with the prior art, the advantages of the present application mainly lie in the following aspects:

[0033] 1) The present application can withstand the inflation force generated by the parachute under the maximum 15T packaging pressure;

[0034] 2) The continuous variable packaging volume is realized by using the sliding baffle, the connecting rod structure and the synchronous disc, and the parachute package of the round square column with the cross-sectional size of 500mm*500mm-720mm*720mm and the height of 0-800mm can be packaged, and the packaging requirements of the common aerospace recovery large parachute of 100L-400L can be met;

[0035] 3) The locking mechanism contained in the device can realize the circumferential packaging pre-pressing of the parachute package, and the parachute package can only be subjected to the vertical pressure at the top opening after being filled into the existing fixed volume packaging device.

[0036] 4) The vent and slotted design of the rounded corner baffle and flat baffle effectively solves the problem that the air inside the parachute cannot be discharged quickly during high-pressure packaging, and avoids the phenomenon of partial bursting of the parachute canopy and parachute pack.

[0037] 5) The base plate synchronous disc and gear disc can be driven by a motor, and the volume can be electrically adjusted in conjunction with the adjustment mechanism;

[0038] 6) The entire packaging device adopts a modular design, making disassembly and assembly convenient. This overcomes the problem of inconvenient transportation of parachute packaging devices due to their large size during large-scale field tests;

[0039] 7) This device only requires redesigning the slide groove on the upper base plate to achieve variable volume packaging of rounded rectangular interface umbrella bags, which has good modification potential and application value. Attached Figure Description

[0040] Figure 1 This is an overall structural diagram of a variable volume parachute packaging device;

[0041] Figure 2 This is a schematic diagram of a rounded corner baffle structure;

[0042] Figure 3 This is a schematic diagram of a flat baffle structure;

[0043] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism;

[0044] Figure 5 This is a schematic diagram of the locking mechanism.

[0045] Figure 6(a) is a top view of the base plate mechanism after the upper base plate has been removed;

[0046] Figure 6(b) is a top view of the base plate mechanism;

[0047] Figure 7 This is a schematic diagram of the device when the cross-section is adjusted to a rounded square of 520mm × 520mm in one embodiment of the present invention;

[0048] Figure 8 This is a top view of the base plate mechanism before and after the change in internal cavity volume. Detailed Implementation

[0049] To better describe the present invention, the present invention will be described in detail below with reference to schematic diagrams and examples.

[0050] like Figure 1 As shown, the present invention provides a variable volume parachute high-pressure packaging device, comprising: a rounded corner baffle 1, a flat baffle 2, an adjustment mechanism 3, a locking mechanism 4, a base plate mechanism 5, and a slider mechanism 6.

[0051] The round corner baffle 1 and the flat baffle 2 are arranged in sequence and at intervals to form a surrounding structure with open ends and variable cross-sectional size; and the connecting part of the round corner baffle 1 and the flat baffle 2 has a lap region.

[0052] The round corner baffle 1 and the flat baffle 2 are arranged in sequence and at intervals to form a surrounding structure with open ends and variable cross-sectional size; and the connecting part of the round corner baffle 1 and the flat baffle 2 has a lap region.

[0053] The bottom plate mechanism 5 is used to drive the sliding block mechanism 6 to move; the sliding block mechanism 6 can drive the round corner baffle 1 to move relative to the bottom plate mechanism 5, so as to change the cross-sectional size of the surrounding structure, and thus make the surrounding structure move towards the center to press and fix the umbrella package.

[0054] The two adjacent round corner baffles 1 are connected through the adjusting mechanism 3, the adjusting mechanism 3 is used as a fine adjusting mechanism and is used to change the cross-sectional size of the surrounding structure. The two adjacent round corner baffles 1 are connected through the locking mechanism 4, and the locking mechanism 4 is used to make the surrounding structure circumferentially package and pre-press the umbrella package. At least two sets of adjusting mechanisms 3 are arranged on each packaging device, and the two sets of adjusting mechanisms 3 are arranged on two symmetrical surfaces of the packaging device respectively to ensure uniform stress. At least four sets of locking mechanisms 4 are arranged on each packaging device, and at least one set of locking mechanism 4 is arranged on each surface of the packaging device.

[0055] As shown in Figure 7 , in an embodiment of the present application, the cross section of the surrounding structure is rectangular, and the four vertices of the cross section are round corner shapes. Figure 7 The non-main components are not shown in the figure. Two opposite outer surfaces of the surrounding structure are respectively provided with a set of adjusting mechanisms 3, and four inner outer surfaces of the surrounding structure are respectively provided with two sets of locking mechanisms 4. The adjusting mechanisms 3 and the two sets of locking mechanisms 4 on the same surface are coplanar, and the two sets of locking mechanisms 4 are symmetrical about the axis of the adjusting mechanism 3. Among them, the round corner baffles 1 and the flat baffles 2 are each 4 groups. When the umbrella package is subjected to packaging pressure on the upper part, the side wall expands in four directions. The round corner baffle 1, the flat baffle 2 and the locking mechanism 4 jointly bear the pressure caused by the expansion of the umbrella package.

[0056] The round corner baffle 1 comprises: a first side baffle 11, an exhaust hole 12, a reinforcing rib 13 on the outside and a slide 14. As shown in Figure 2 , the upper and lower ends of the round corner baffle 1 are arranged with horizontal waist-shaped holes as the slide 14, and the flat baffle 2 is provided with a circular pulley 22 at the corresponding position. The round corner baffle 1 and the flat baffle 2 can slide relative to each other in the horizontal plane, and the bottom plate mechanism 5 removes the upper bottom plate as shown in FIG. 6(a) and (b). A plurality of exhaust holes 12 are arranged on the first side baffle 11, and a reinforcing rib 13 is arranged on the outside of the first side baffle 11. The reinforcing rib 13 is provided with a rope passing hole for hanging the umbrella package when packaging the parachute.

[0057] As shown in Figure 3As shown, the flat baffle 2 comprises: a second side baffle 21, a circular pulley 22 and a bushing 23. The second side baffle 21 is provided with a plurality of exhaust holes and a plurality of circular pulleys 22, the circular pulley 22 is correspondingly matched with a slide 14, the circular pulley 22 is inserted into the slide 14 and can slide along the slide 14. The circular pulley 22 can rotate relative to the second side baffle 21 about an axis. The outer part of the circular pulley 22 is provided with a bushing 23, and the material of the bushing 23 is PEEK (polyether ether ketone). When the flat baffle 2 and the round baffle 1 produce relative displacement, the contact between the bushing 23 and the slide 14 can significantly reduce the friction force, and the bushing 23 can be replaced after wear. In an embodiment of the present application, the second side baffle 21 is provided with four circular pulleys 22.

[0058] As shown in the drawings, Figure 4 The adjusting mechanism 3 comprises: a stepper motor 31, a controller 32, a shaft coupling 33, a lead screw 34 and a nut 36. The nut 36, the lead screw 34 and the shaft coupling 33 are connected in sequence, and the lead screw 34 and the shaft coupling 33 can translate along the axis and the shaft coupling 33 can drive the lead screw 34 to rotate. The nut 36 and the controller 32 are fixedly installed on the round baffle 1. The adjusting mechanism 3 and the flat baffle 2 are not connected and fixed.

[0059] As shown in the drawings, Figure 5 The locking mechanism 4 comprises a lead screw and two nuts for each group, and is arranged between the adjacent two round baffles 1. In an embodiment of the present application, the round baffle 1 is provided with three openings at the upper, middle and lower edges for placing the locking mechanism 4 and the adjusting mechanism 3. The adjusting mechanism 3 and the locking mechanism 4 are used in cooperation, and the function is to fix the round baffle 1 and the flat baffle 2 when they are adjusted to the predetermined position.

[0060] The stepper motor 31 drives the lead screw 34, and then makes the round baffle 1 and the flat baffle 2 produce slight relative sliding, so as to realize the fine adjustment of the position of the round baffle 1 and the flat baffle 2. When the space formed by the round baffle 1 and the flat baffle 2 reaches the preset umbrella package volume, the nut of the locking mechanism 4 is tightened, so as to fix the inner package volume of the packaging device. Since the bottom of the round baffle 1 is connected with the bottom plate mechanism 5 through the slide block mechanism 6, and the plurality of round baffles 1 move synchronously, a set of adjusting mechanisms 3 are arranged on the two opposite side walls of the packaging device, so as to realize the displacement coordination of the four round baffles 1.

[0061] As shown in Fig. 6(a)(b), the bottom plate mechanism 5 comprises: an upper bottom plate 51, a lower bottom plate 52, a synchronous disc 53, a connecting rod 54, a central fixed shaft 55, a toothed disc and a crank. The connecting rod 54 is hinged at one end to the synchronous disc 53, and at the other end to the bottom slide 61, and the axes of the plurality of connecting rods 54 are coplanar. The upper bottom plate 51 and the lower bottom plate 52 are fixedly connected, and the upper bottom plate 51 is machined with a long waist hole as a sliding groove, and the slide mechanism 6 can move along the sliding groove. In the embodiment of the present application, the four connecting rods 54 are respectively hinged to the bottom slide 61. The synchronous disc 53 and the toothed disc are installed between the upper bottom plate 51 and the lower bottom plate 52 through the central fixed shaft 55. The synchronous disc 53 is arranged below the toothed disc, and the toothed disc drives the synchronous disc 53 to rotate by rotating the crank, and the synchronous disc 53 makes the four groups of round corner baffle plates 1 displace coordinately. As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61. Figure 8 As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61. Figure 8 As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61. Figure 8 As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61. Figure 8 As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61. As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61.

[0062] As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61. As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61.

[0063] As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61. As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61.

[0064] As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61. As shown in Fig. 6(a)(b), the left side is the initial state, and the space in the middle of the surrounding baffle structure is the largest, at this time the connecting rod 54 is along the radial direction of the synchronous disc 53. After the space in the middle of the surrounding baffle structure becomes smaller, as shown in Fig. 6(a)(b), the right side, the connecting rod 54 rotates clockwise by 45° around the hinge axis of the connecting rod 54 and the bottom slide 61.

[0065] The description herein of any aspects of the application using terms such as "processing" or "computing" or "calculating" or "determining" or "displaying" or the like, is used by the inventors to represent some aspect of the

Claims

1. A variable-volume parachute high-pressure packaging device, characterized in that, include: Rounded corner baffle (1), flat baffle (2), adjusting mechanism (3), locking mechanism (4), base plate mechanism (5) and slider mechanism (6); Rounded corner baffles (1) and flat baffles (2) are arranged alternately to form a fence structure with openings at both ends and variable cross-sectional size; The rounded corner baffle (1) is connected to the adjacent flat baffle (2) through a slide rail structure; the rounded corner baffle (1) is connected to the base plate mechanism (5) through the slider mechanism (6); The base plate mechanism (5) is used to drive the slider mechanism (6) to move, so that the slider mechanism (6) can drive the rounded corner baffle (1) to move relative to the base plate mechanism (5), thereby changing the cross-sectional size of the enclosure structure and causing the enclosure structure to move towards the center to press and fix the umbrella bag. There is an overlapping area at the connection between the rounded corner baffle (1) and the flat baffle (2); Two adjacent rounded corner baffles (1) are connected by an adjustment mechanism (3), which is used to change the cross-sectional size of the enclosure structure; Two adjacent rounded corner baffles (1) are connected by a locking mechanism (4), which is used to pre-compress the umbrella bag circumferentially by the enclosure structure; Each packaging device is provided with at least two sets of adjustment mechanisms (3), which are respectively set on two symmetrical surfaces of the packaging device; Each facade of the packaging device is equipped with at least one locking mechanism (4); The rounded corner baffle (1) includes: a first side baffle (11), an exhaust port (12), an outer reinforcing rib (13), and a slide (14); the rounded corner baffle (1) has a horizontal waist-shaped hole as a slide (14), the first side baffle (11) has multiple exhaust ports (12), and the outer side of the first side baffle (11) is provided with a reinforcing rib (13); the reinforcing rib (13) is provided with a rope hole for hanging the parachute pack when packaging the parachute; The base plate mechanism (5) includes: an upper base plate (51), a lower base plate (52), a timing disc (53), a connecting rod (54), a central fixed shaft (55), and a gear disc; One end of the connecting rod (54) is hinged to the synchronous disk (53), and the other end of the connecting rod (54) is hinged to the slider mechanism (6); The upper base plate (51) and the lower base plate (52) are fixedly connected. The upper base plate (51) has a long slot as a slide groove, and the slider mechanism (6) can move along the slide groove. Synchronous disc (53) and gear disc are mounted between upper base plate (51) and lower base plate (52) via central fixed shaft (55); A gear plate is arranged below the synchronous disk (53). The gear plate drives the synchronous disk (53) to rotate. The connecting rod (54) converts the rotational displacement of the synchronous disk (53) into the linear displacement of the slider mechanism (6) along the groove of the upper base plate (51), driving the rounded corner baffle (1) to slide, thereby changing the size of the space in the enclosure structure.

2. The variable volume parachute high-pressure packaging device according to claim 1, characterized in that, The flat baffle (2) includes: a second side baffle (21), a circular pulley (22), and a bushing (23); The second side baffle (21) is provided with multiple exhaust holes and multiple circular pulleys (22). Each circular pulley (22) is matched with a slide rail (14). The circular pulley (22) is inserted into the slide rail (14) and can slide along the slide rail (14). The circular pulley (22) can rotate about its axis relative to the second side baffle (21); The outer casing of the circular pulley (22) is fitted with a bushing (23).

3. The variable volume parachute high-pressure packaging device according to claim 1, characterized in that, The adjustment mechanism (3) includes: a stepper motor (31), a controller (32), a coupling (33), a lead screw (34), and a nut (36); Nut (36), lead screw (34) and coupling (33) are connected in sequence. The lead screw (34) and coupling (33) can translate along the axis and the coupling (33) can drive the lead screw (34) to rotate. The controller (32) controls the stepper motor (31) to drive the coupling (33) to rotate. Nut (36) and controller (32) are fixedly mounted on rounded corner baffle (1).

4. The variable volume parachute high-pressure packaging device according to claim 1, characterized in that, The slider mechanism (6) includes: a bottom slider (61) and a corner block (62); Each rounded corner baffle (1) is fixedly connected to a corner block (62). The bottom slider (61) and the corner block (62) are fixedly connected. The bottom slider (61) and the corner block (62) are located on both sides of the upper base plate (51). The bottom slider (61) and the corner block (62) can slide along the groove of the upper base plate (51). The rounded corner baffle (1) is connected to the synchronous disk (53) via the bottom slider (61) and the connecting rod (54).

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