A bag collection and limiting device

Abstract

The camming wheel assembly is connected to the track by means of a spring, and the track is moved along the track in a direction of rotation, so that the track is moved along the track in a direction of rotation and a predetermined distance between the track and the track is achieved.

Description

Technical Field

[0001] The invention relates to a bag collection and limiting device, which is used for separation and unlocking of a spacecraft. Background Art

[0002] Straps are widely used between rockets and satellites due to their high load-bearing capacity, high reliability, and excellent connection rigidity. Once unlocked, they are pulled toward the launch vehicle's final stage using a tension spring. After dangling in space for a period of time, they ablate during their descent.

[0003] With the rapid development of my country's space industry, the continuous deepening of space missions and the continuous improvement of functions, multifunctional spacecraft have gradually developed, and the launch of multiple spacecraft in the form of a combination has become a trend. Wrapping straps are gradually used to connect spacecraft. After the spacecraft is unlocked and separated, in order not to affect the subsequent movement of the spacecraft, the unlocked wrapping strap needs to be pulled away from the separation surface and limited, and the limited state must be maintained for a long time. The wrapping strap device is currently mainly used in the satellite-rocket connection unlocking device. After the satellite-rocket separation, there is no limit or locking requirement for the wrapping strap device. Usually, it is sufficient to pull off the separation surface with a tension spring, which cannot meet the collection and locking requirements after the spacecraft separation.

[0004] In addition, in order to reduce weight and save space, most spacecraft are integrated in design, and it is inevitable to arrange single-machine products or instruments and equipment near the separation surface, which requires reducing the separation impact; however, the wrapping tape in the existing technology does not meet the above requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and meet the requirements of adjustable pull-off force, reliable collection, stable limiting and small impact during the collection and limiting process of the strap.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A bag collection and limiting device comprises a coil spring assembly, a roller assembly, a buffer assembly, a wire rope assembly, a limiting bracket, a rope clamp, a slide plate and a support seat;

[0008] The coil spring assembly is installed on the support seat and is connected to one end of the steel wire rope of the wire rope assembly to provide preload torque and tension; the limit bracket is installed on the coil spring assembly, and the roller assembly and buffer assembly are installed on the corresponding two sides of the limit bracket; the other end of the steel wire rope passes through the coil spring assembly, the roller assembly, the rope clamp, and the steel wire rope groove on the slide, and is connected to the lug of the slide, and the slide is connected to the strap by screws; the roller assembly and the rope clamp are used to change the movement of the steel wire rope, wherein the axis of the roller assembly is kept perpendicular to the steel wire rope, and the strap is in an oblique pulled state before being unlocked;

[0009] After the strap is unlocked, the coil spring assembly pulls the strap through the wire rope assembly, and the strap detaches from the connected part; and under the continuous action of the coil spring assembly, the strap continues to move until it stops, and the rope clamp and the slide plate are stuck in the buffer assembly. The coil spring assembly still has residual pre-tightening torque to keep the strap in a limited position.

[0010] In one embodiment of the present invention, the coil spring assembly includes a shell, an energy storage element, a coil spring drum, a rotating shaft, a wire rope drum, a bearing, a support structure and an end cover; the shell is used to provide an accommodating space; the energy storage element is placed in the coil spring drum, the outer side of the energy storage element is connected to the coil spring drum, and the inner side is connected to the rotating shaft, and the rotating coil spring drum applies an initial preload torque to the energy storage element; the wire rope drum is connected to the rotating shaft, and the wire rope drum rotates with the rotating shaft; a pin groove is provided on the wire rope drum, which is connected to the wire rope assembly pin; the bearing is limited in the shell through the bearing and the support structure.

[0011] In one embodiment of the present invention, the middle of the wire rope drum is a hexagonal groove; the outer wheel of the wire rope drum is a U-shaped groove structure, so that the wire rope is always in the U-shaped groove during the winding process as the wire rope drum rotates.

[0012] In one embodiment of the present invention, a volute spring is used as an energy storage element, and the preload torque of the volute spring is adjusted according to demand.

[0013] In one embodiment of the present invention, the pull-out force is adjusted as needed by adjusting the initial rotation angle of the coil spring.

[0014] In one embodiment of the present invention, the strap is pulled off in an obliquely upward direction by the wire rope assembly and the roller assembly, including an upward pulling force and a lateral pulling force.

[0015] In one embodiment of the present invention, the roller assembly includes a roller, a roller bracket, and a roller shaft; the roller is installed on the roller bracket, and the roller and the roller shaft can rotate relative to each other to change the direction of the wire rope; the outer contour of the roller is a U-shaped groove structure, with a groove in the middle and convex shoulders at both ends, so that the wire rope passing through the roller assembly is always in the U-shaped groove.

[0016] In one embodiment of the present invention, the inner side of the roller is a circular hole with a hollow center, which is used to achieve relative rotation with the roller.

[0017] In one embodiment of the present invention, the buffer assembly includes a stainless steel cover and a silicone rubber block; the stainless steel cover is of a U-shaped configuration with convex inner and outer sides, and the stainless steel cover is wrapped with silicone rubber blocks except for the connection surface with the limit bracket.

[0018] In one embodiment of the present invention, the wire rope assembly also includes a bayonet, an adjusting rod, and a nut; the bayonet and the adjusting rod are connected to the wire rope by crimping; before the bayonet and the adjusting rod are crimped to the wire rope, the wire rope needs to first pass through the wire rope drum of the winding spring assembly, and the bayonet is installed in the slot of the wire rope drum; the adjusting rod is connected to the lug of the slide.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) Adjustable pull-off force: The spiral spring is used as the energy storage element. The preload torque of the spiral spring can be adjusted according to the needs. The wire rope assembly and roller assembly are used to pull the strap in an oblique upward direction. In addition to the upward pulling force on the strap, there is also a lateral pulling force, which is more conducive to the strap pulling off. The pull-off force can be adjusted according to the needs by adjusting the initial rotation angle of the spiral spring.

[0021] (2) Small collection impact: A buffer device is set under the limit bracket. The buffer device uses a stainless steel cover and a silicone rubber block. It takes advantage of the good toughness and easy deformation of stainless steel and the good flexibility and energy consumption of silicone rubber to effectively reduce the impact caused by the collection of the bag.

[0022] (3) Reliable limiting: When the wrapping tape is collected under the limiting bracket, the spiral spring still has a part of residual torque, and this part of the torque can be adjusted during the assembly process, which can firmly limit the wrapping tape under the limiting bracket.

[0023] (4) Strong spatial adaptability: The bag collection and limiting device adopts a purely mechanical structure, and the components are all made of metal materials that are resistant to space. It has the characteristics of strong spatial adaptability and long spatial life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the initial state of a bag collection and limiting device of the present invention;

[0025] Figure 2 This is a schematic diagram of a bag collection and limiting device of the present invention in an installation state before collection;

[0026] Figure 3 This is a schematic diagram of a bag collecting and limiting device of the present invention after collection;

[0027] Figure 4 This is a schematic diagram of the coil spring assembly state structure of an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the roller assembly according to an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of the state structure of a buffer component according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of a wire rope assembly according to an embodiment of the present invention;

[0031] Figure 8 2. It is a schematic structural diagram of a wire rope drum according to an embodiment of the present invention;

[0032] Figure 9 is a schematic diagram of the roller structure of an embodiment of the present invention;

[0033] Figure 10 This is a schematic structural diagram of a stainless steel cover according to an embodiment of the present invention;

[0034] Figure 11 2 is a schematic diagram of the structure of a slide plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0036] A tape collection and limiting device comprises a coil spring assembly 1, a roller assembly 2, a buffer assembly 3, a wire rope assembly 4, a limiting bracket 5, a rope clamp 6, a slide plate 7 and a support seat 8.

[0037] The coil spring assembly is connected to one end of the wire rope assembly. The wire rope assembly passes through an opening in the coil spring assembly housing, passes through a collection bracket, and then around the roller assembly and rope clamp. After changing the direction of movement, the wire rope is connected to the slide plate lug via screws. The axis of the roller assembly remains perpendicular to the wire rope. A wire rope groove is provided at the upper end of the slide plate, allowing the wire rope to freely pass through the groove, and the strap is pulled upward at an angle. The volute spring of the coil spring assembly is preloaded and has a certain preload torque. This preload torque is transmitted to the wire rope drum via the rotating shaft. The wire rope drum is connected to the wire rope assembly and converted into tension in the wire rope, exerting a continuous upward pull on the strap.

[0038] After the strap is unlocked, the scroll spring activates the rotating shaft to drive the wire rope drum. This rotation pulls the strap diagonally upward through the wire rope assembly, freeing it from the connected component. Under the continued action of the scroll spring, the strap continues to move upward. The rope clamp and the upper end of the slide penetrate the square opening in the center of the buffer assembly. The clamping block strikes the buffer assembly at the lower end of the limit bracket. The buffer assembly deforms to absorb energy, reducing the impact. The strap stops moving, but the scroll spring still retains a certain preload torque, limiting the strap to the lower end of the limit bracket.

[0039] The coil spring assembly consists of a housing 11, a spiral spring 12, a coil spring barrel 13, a rotating shaft 14, a wire rope drum 15, a bearing 16, a support structure 17, and an end cap 18. The spiral spring is housed within the coil spring barrel, connected to the barrel on the outside and to the rotating shaft on the inside. Rotating the coil spring barrel from the bottom end applies an initial preload torque to the spiral spring. The wire rope drum and shaft are connected via a hexagonal tenon and mortise, allowing the drum to rotate with the rotating shaft. A latching slot is provided on the drum for latching with the wire rope assembly.

[0040] The roller assembly consists of a roller 21, a roller bracket 22, and a roller shaft 23. The roller and the roller shaft of the roller assembly can rotate relative to each other to change the direction of the wire rope. The outer contour of the roller is a U-shaped groove structure, with a groove in the middle and convex shoulders at both ends, so that the wire rope passing through the roller assembly always stays in the U-shaped groove.

[0041] The buffer assembly consists of a stainless steel cover 31 and a silicone rubber block 32. The stainless steel cover is stamped from a tough stainless steel plate and has a "U"-shaped configuration with raised edges on both the inside and outside, completely enveloping the silicone rubber pad except for its top surface. The buffer assembly is mounted on a limit bracket, with the upper surface of the silicone rubber pad enclosed by the lower surface of the limit bracket, completely concealing it.

[0042] The wire rope assembly consists of a wire rope 41, a bayonet 42, an adjustment rod 43, and a nut 44. The bayonet and adjustment rod are crimped to the wire rope, and the lower end of the adjustment rod is a threaded section. Before crimping the bayonet and adjustment rod to the wire rope, the wire rope must first be passed through the wire rope drum. The bayonet is located on one side of the drum's slot.

[0043] There is a hexagonal groove in the middle of the wire rope drum, and a bayonet groove is set horizontally in the middle of the drum; the outer wheel of the wire rope drum is a U-shaped groove structure, with a groove in the middle and convex shoulders at both ends, so that the wire rope is always in the U-shaped groove during the winding process as the wire rope drum rotates.

[0044] The outer contour of the roller is a U-shaped groove structure, with a groove in the middle and convex shoulders at both ends, so that the wire rope passing through the roller assembly always stays in the U-shaped groove. The inner side of the roller is a hollowed-out circular hole in the middle, which can rotate around the roller shaft.

[0045] The stainless steel cover is stamped from a stainless steel plate with good toughness. The stainless steel cover has a "U"-shaped configuration with convex inner and outer sides, completely wrapping the outer sides of the silicone rubber pad except for the upper end surface.

[0046] There is a semicircular groove on the upper end of the slide to facilitate the wire rope to pass through; the outer side of the upper end is an arc structure to prevent the wire rope from being scratched during turning; there is a lug in the middle of the slide.

[0047] The installation implementation process is as follows.

[0048] Pass the wire rope through the wire rope drum, measure the length of the wire rope, insert the bayonet and adjusting rod at both ends of the wire rope respectively, where the bayonet is located on the side of the bayonet groove in the wire rope drum, and crimp the bayonet, adjusting rod and wire rope on the crimping machine.

[0049] The outer side of the volute spring is fixed to the coil spring barrel. The volute spring is then coiled clockwise into the coil spring barrel. The coil spring barrel and coil spring assembly are installed into the housing from bottom to top. The bearing and support structure are installed in the housing from top to bottom. The inner hexagonal groove on the drum is aligned with the outer hexagonal tenon on the shaft. The wire rope drum is placed on the shaft from bottom to top. The adjusting rod tightens the wire rope on one side, and the latch engages the latch slot on the drum. Wrap the wire rope three times clockwise around the drum. The shaft passes through the support structure and bearing from top to bottom, locking into the inner side of the coil spring for secure connection. The adjusting rod is removed from the opening in the housing. The bearing and end cap are installed and secured at the top end of the coil spring assembly. The limit bracket is installed on the open side of the coil spring assembly. The roller is placed in the center of the roller bracket, aligning the center holes. The roller passes through the outer side of the roller bracket, and the roller assembly is installed on the limit bracket. The silicone rubber block is embedded in the stainless steel sleeve, and the buffer assembly is installed from bottom to top at the lower end of the limit bracket. The coil spring assembly is connected to the support base and fixed.

[0050] Insert the hexagonal wrench into the hexagonal groove at the top of the shaft and rotate it clockwise three times to hold it steady. The wire rope assembly adjustment rod passes around the roller assembly and passes through the square opening at the bottom of the limit bracket and the square opening in the middle of the buffer assembly. Place the wire rope in the semicircular groove at the top of the slide. Press the rope clamp in place, making sure the curved side of the rope clamp is inward to secure the rope clamp. Install a nut on the adjustment rod. Pass the adjustment rod from top to bottom through the mounting hole on the slide's lug. Install two nuts on the underside of the adjustment rod, adjust the upper and lower nuts to the correct position, and lock. Slowly release the hexagonal wrench until the wire rope is taut.

[0051] After the strap is unlocked, the scroll spring activates the rotating shaft to drive the wire rope drum. This rotation pulls the strap diagonally upward through the wire rope assembly, freeing it from the connected component. Under the continued action of the scroll spring, the strap continues to move upward, and the rope clamp and the upper end of the slide penetrate the square opening in the center of the buffer assembly until the clamping block strikes the buffer assembly at the lower end of the limit bracket. The buffer assembly deforms to absorb energy, reducing the impact, and the strap stops moving. The scroll spring still retains a certain preload torque, limiting the strap to the lower end of the limit bracket.

[0052] The linkage of 6 or more tape collection and limiting devices can realize the collection and limiting of the tape device, and has the characteristics of adjustable pull-off force, reliable collection, stable limiting, small impact, and long space life.

[0053] After the strapping device of the present invention is unlocked, it is pulled away from the separation surface and secured in place to prevent it from interfering with the movement of the connected object. A sliding plate connects the strapping device's clamping block and strap. A wire rope assembly is connected to the sliding plate at one end and to the wire rope drum of the coil spring assembly at the other end, connecting the strapping device to the collection and stopper device. A wire rope motion path is formed by a stopper bracket, a roller assembly, and a rope clamp, thereby tightening the strap upward and laterally. A scroll spring applies a preload torque. After the strapping device is unlocked, the scroll spring rotates the wire rope drum via a rotating shaft. This rotation pulls the strap diagonally upward through the wire rope assembly, freeing it from the connected object. Under the continued action of the scroll spring, the strap continues to move upward. The rope clamp and the upper end of the sliding plate penetrate into the central square opening of the buffer assembly. The clamping block impacts the buffer assembly at the lower end of the stopper bracket. The buffer assembly deforms and absorbs energy, reducing the impact. The strap stops moving, but the scroll spring still retains a preload torque, securing the strap at the lower end of the stopper bracket.

[0054] The present invention's tape collection and limiting device pulls the tape off in an obliquely upward direction. This applies not only an upward pull but also a lateral pull, further facilitating its removal. The residual torque of the spiral spring holds the tape in place below the limiting bracket. A buffer device is provided below the limiting bracket to effectively mitigate the impact of tape collection.

[0055] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

[0056] Although the present invention has been disclosed above in terms of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A tape collection and limiting device, characterized in that: It includes a coil spring assembly, a roller assembly, a buffer assembly, a wire rope assembly, a limit bracket, a rope clamp, a slide plate and a support seat; The coil spring assembly is installed on the support seat and is connected to one end of the steel wire rope of the wire rope assembly to provide preload torque and tension; the limit bracket is installed on the coil spring assembly, and the roller assembly and buffer assembly are installed on the corresponding two sides of the limit bracket; the other end of the steel wire rope passes through the coil spring assembly, the roller assembly, the rope clamp, and the steel wire rope groove on the slide, and is connected to the lug of the slide, and the slide is connected to the strap by screws; the roller assembly and the rope clamp are used to change the movement of the steel wire rope, wherein the axis of the roller assembly is kept perpendicular to the steel wire rope, and the strap is in an oblique pulled state before being unlocked; After the strap is unlocked, the coil spring assembly pulls the strap through the wire rope assembly, and the strap detaches from the connected part; and under the continuous action of the coil spring assembly, the strap continues to move until it stops, and the rope clamp and the slide plate are stuck in the buffer assembly. The coil spring assembly still has residual pre-tightening torque to keep the strap in a limited position.

2. The tape collecting and limiting device according to claim 1, characterized in that: The coil spring assembly includes a shell, an energy storage element, a coil spring drum, a rotating shaft, a wire rope drum, a bearing, a support structure and an end cover; the shell is used to provide an accommodating space; the energy storage element is placed in the coil spring drum, the outer side of the energy storage element is connected to the coil spring drum, and the inner side is connected to the rotating shaft, and the rotating coil spring drum applies an initial preload torque to the energy storage element; the wire rope drum is connected to the rotating shaft, and the wire rope drum rotates with the rotating shaft; a pin groove is provided on the wire rope drum, which is connected to the wire rope assembly pin; the bearing is limited in the shell through the bearing and the support structure.

3. The tape collecting and limiting device according to claim 2, characterized in that: The middle of the wire rope drum is a hexagonal groove; the outer wheel of the wire rope drum is a U-shaped groove structure, so that the wire rope is always in the U-shaped groove during the winding process as the wire rope drum rotates.

4. The tape collecting and limiting device according to claim 2, characterized in that: The volute spring is used as the energy storage element, and the preload torque of the volute spring is adjusted according to demand.

5. The tape collecting and limiting device according to claim 4, characterized in that: The pull-off force can be adjusted as required by adjusting the initial rotation angle of the coil spring.

6. The tape collecting and limiting device according to claim 2, characterized in that: The strap is pulled off in an obliquely upward direction by the wire rope assembly and the roller assembly, including an upward pulling force and a lateral pulling force.

7. The tape collecting and limiting device according to any one of claims 1 to 6, characterized in that: The roller assembly includes a roller, a roller bracket, and a roller shaft; the roller is installed on the roller bracket, and the roller and the roller shaft can rotate relative to each other to change the direction of the wire rope; the outer contour of the roller is a U-shaped groove structure, with a groove in the middle and convex shoulders at both ends, so that the wire rope passing through the roller assembly is always in the U-shaped groove.

8. The tape collecting and limiting device according to claim 7, characterized in that: The inner side of the roller is a circular hole with a hollow center, which is used to achieve relative rotation with the roller.

9. The tape collecting and limiting device according to any one of claims 1 to 6, characterized in that: The buffer assembly includes a stainless steel cover and a silicone rubber block; the stainless steel cover is of a U-shaped configuration with convex inner and outer sides, and the stainless steel cover is wrapped with a silicone rubber block except for the connection surface with the limit bracket.

10. The tape collecting and limiting device according to any one of claims 1 to 6, characterized in that: The wire rope assembly also includes a bayonet, an adjusting rod, and a nut; the bayonet and the adjusting rod are connected to the wire rope by crimping; before the bayonet and the adjusting rod are crimped to the wire rope, the wire rope needs to first pass through the wire rope drum of the winding spring assembly, and the bayonet is installed in the slot of the wire rope drum; the adjusting rod is connected to the lug of the slide.

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