Parking device for butt joint of pallet and space station

Abstract

The utility model discloses a parking device for butt joint of a pallet and a space station, which relates to the technical field of parking for butt joint of space stations and comprises a driving motor, the output end of the driving motor is fixedly connected with one end of a driving rotating shaft, and the middle of the outer circle surface of the driving rotating shaft is slidably connected with the middle of the lower surface of a lifting disc. The lower surface of the lifting disc is connected with a locking claw device, the locking claw device comprises a fixing frame, one end of the lower surface of the fixing frame is fixedly connected with one end of a first fixing rod, the upper end of one side of the first fixing rod is rotationally connected with one end of a first fixing pin, and the middle of the outer circle surface of the first fixing pin is rotationally connected with one end of a first sliding sleeve. According to the utility model, through the arrangement of the locking claw device, the driving motor drives the driving rotating shaft, so that the fixed claw can slide downwards according to the butt joint position to drive the locking claw device to fix and lock the parking contactor, and the situations of shaking and unstable butt joint can be effectively prevented when butt joint is carried out on a space station; and rapid capture can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of docking for space stations, in particular to a docking device for a cargo tray and a space station. Background Art

[0002] With the development of my country's aerospace technology, the establishment and development of space stations is an important integration and embodiment of space technology. In the future, during the orbital flight of my country's space station, space cargo resources will need to be replenished, and ground materials will need to be transported to the space station to realize the docking of space cargo at the space station.

[0003] After searching, a Chinese patent with publication number CN104192323B discloses a connection lock for spacecraft docking, which relates to a connection lock. The present invention is to solve the problem of heavy weight and low reliability of the existing connection lock mechanism. The connection lock for spacecraft docking of the present invention includes a stud bracket connected to the active end spacecraft and a nut bracket connected to the passive end spacecraft, and also includes a motor, a motor baffle, a coupling, a bearing, a bearing end cover, a stud, a nut, a connecting key, a compression spring and a nut end cover. The top surface of the motor is fixed to the bottom surface of the stud bracket through the motor baffle, and the top and bottom ends of the stud extend into the nut bracket and the stud bracket respectively. The shaft of the motor is connected to the bottom end of the stud through a coupling, and a bearing is provided between the stud and the stud bracket. The lower end of the angular contact ball bearing is fixed by a shaft shoulder provided on the stud bracket, and the upper end is fixed by the bearing end cover. The nut is circumferentially positioned with the nut bracket through the connecting key. The present invention is used for rigid connection between active and passive spacecraft.

[0004] After searching, a Chinese patent with publication number CN113879570B discloses a spacecraft active capture device and docking device and method. The spacecraft active capture device includes a capture base and a capture drive unit installed on the capture base, a claw-type docking mechanism, a first capture claw and a second capture claw. The capture base is installed on the active mechanism; the first capture claw is connected to the capture base through a first base connecting shaft, and the first base connecting shaft passes through the capture base and is connected to the second capture claw through a driving connecting rod; one end of the claw-type docking mechanism is connected to the driving end of the capture drive unit, and the other end is connected to the first capture claw. The capture drive unit drives the first capture claw to close or open through the claw-type docking mechanism, and the first capture claw drives the second capture claw to close or open synchronously through the first base connecting shaft and the driving connecting rod. The present invention can complete the functions of capture, correction, buffering, locking, etc. by using the capture device, and does not require a separate locking component, which reduces the volume and weight and saves resources.

[0005] Although the capture device in the above scheme can complete the capture, correction, buffering, locking and other functions without the need for a separate locking component, the docking device in the above patent is difficult to dock the cargo pallet separately, which makes it difficult for the space station to dock normally with the space station when replenishing materials. During the docking process, there are severe collisions, low positioning accuracy, great control difficulty, and instability after docking. For this reason, we provide a parking device for docking cargo pallets with space stations to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to solve the problem of docking and parking of a cargo pallet and a space station, and provides a parking device for docking a cargo pallet and a space station.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a parking device for docking a cargo pallet with a space station, comprising a driving motor, wherein the output end of the driving motor is fixedly connected to one end of a driving shaft, the middle portion of an outer cylindrical surface of the driving shaft is slidingly connected to the middle portion of a lower surface of a lifting disk, the lower surface of the lifting disk is connected to a locking claw device, the locking claw device comprises a fixing frame, one end of a lower surface of the fixing frame is fixedly connected to one end of a first fixing rod, an upper end on one side of the first fixing rod is rotatably connected to one end of a first fixing pin, and the middle portion of an outer cylindrical surface of the first fixing pin is rotatably connected to one end of a first sliding sleeve.

[0008] Furthermore, the middle part of the other end of the first sliding sleeve is slidably connected to the surface of the fixing claw, and one end of the fixing claw is rotationally connected to the outer circular surface of the second fixing pin. The fixing claw slides in the first sliding sleeve under the action of the sliding buckle, and the fixing claw can be controlled to lock and fix the docking device.

[0009] Furthermore, the second fixing pin is arranged in a circle, and a sliding buckle is rotatably arranged at one end of the second fixing pin. The circular width value of the second fixing pin is smaller than the width value of the sliding buckle. When sliding, the second fixing pin fixes the fixing claw and the sliding buckle to prevent parts from falling off during operation.

[0010] Furthermore, the upper surface of the drive motor is fixedly connected to the middle part of the lower surface of the first chassis, the middle part of the upper surface of the first chassis is fixedly connected to one end of the outer shell, and four first positioning pins are fixedly provided on the upper surface of the outer shell. The outer shell is supported and fixed by the first chassis to prevent the docking device from being unable to dock during work, causing the parking contactor to be unable to dock accurately.

[0011] Furthermore, the other end of the fixed claw is slidably connected to the slide slot of the parking contactor. Four pin holes and a lock hole are arranged around the lower surface of the parking contactor. When docking, the lock holes will be docked at an angle through the pin holes to prevent the docking device from being unable to dock with the holes, which is used to perform preliminary positioning of the docking device.

[0012] Furthermore, the driving shaft is arranged in a circular shape, and a locking threaded shaft is fixedly arranged at the other end of the driving shaft. The circular width value of the driving shaft is greater than the width value of the locking threaded shaft. The driving shaft is rotated under the drive of the driving motor. After the locking claw device fixes the docking device, when it contacts the locking threaded shaft when docking back, the parking contactor is quickly locked by the drive shaft to prevent the parking contactor from being unstable in docking.

[0013] Furthermore, the fixing frame is arranged in a rectangular shape, and a first fixing plate is fixedly arranged at one end of the upper surface of the fixing frame. The width of the rectangle of the fixing frame is smaller than the width of the first fixing plate, so that the fixing frame is fixed when the locking claw device is working, thereby preventing the first fixing rod from shaking and causing the locking claw device to be unable to work normally.

[0014] Furthermore, the first chassis is configured to be a square, and a bearing is fixedly provided in the middle of the upper surface of the first chassis. The width of the square of the first chassis is greater than the width of the bearing. When the driving shaft rotates, the bearing plays a lubricating role to prevent the driving shaft from fatigue fracture due to long-term operation.

[0015] Compared with the prior art, the docking device for the cargo pallet and the space station has the following beneficial effects:

[0016] 1. The utility model is provided with a locking claw device. The driving motor drives the driving shaft so that the fixed claw can slide downward according to the docking position to drive the locking claw device to fix and lock the parking contactor. It can effectively control the docking of the space station to prevent shaking and unstable docking, and can quickly capture.

[0017] 2. The utility model is provided with a locking threaded shaft. When the parking contactor contacts the locking threaded shaft, the driving shaft drives the locking threaded shaft to rotate and enter the lock hole for rotation and locking. This effectively controls the docking device so that it will not shake when the docking is completed, and can control the speed and efficiency of the docking, preventing the docking device from being unable to dock. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the locking claw device of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the front section of the utility model.

[0022] In the figure: 1. driving motor; 2. first chassis; 3. driving shaft; 4. housing; 5. lifting plate; 6. first positioning pin; 7. locking threaded shaft; 8. parking contactor; 9. first fixed plate; 10. locking claw device; 101. first fixed rod; 102. sliding buckle; 103. first sliding sleeve; 104. fixing frame; 105. first fixing pin; 106. fixing claw; 107. second fixing pin; 11. bearing; 12. pin hole; 13. locking hole. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] See also Figure 1 and Figure 2 A docking device for a cargo pallet to dock with a space station includes a drive motor 1. The upper surface of the drive motor 1 is fixedly connected to the middle of the lower surface of a first chassis 2. The first chassis 2 is arranged in a square shape. A bearing 11 is fixedly arranged in the middle of the upper surface of the first chassis 2. The width of the square of the first chassis 2 is greater than the width of the bearing 11, so that a bottom lubrication of the drive shaft 3 can be performed to prevent burrs from appearing on the surface of the drive shaft 3 during long-term operation, causing the device to malfunction.

[0025] The middle part of the upper surface of the first chassis 2 is fixedly connected to one end of the shell 4, and four first positioning pins 6 are fixedly set on the upper surface of the shell 4. When docking, the first positioning pins 6 can preliminarily control the docking position of the docking device to prevent the docking device from being unable to dock. The output end of the driving motor 1 is fixedly connected to one end of the driving shaft 3, and the driving shaft 3 is set to a circle. A locking threaded shaft 7 is fixedly set on the other end of the driving shaft 3. The circular width value of the driving shaft 3 is greater than the width value of the locking threaded shaft 7. The working time of the locking threaded shaft 7 is controlled by the driving shaft 3, and locking and opening can be performed, thereby effectively realizing the fully automatic opening and locking state.

[0026] See also Figure 3 and Figure 4The middle part of the outer cylindrical surface of the driving shaft 3 is slidably connected with the middle part of the lower surface of the lifting plate 5. The lower surface of the lifting plate 5 is connected with the locking claw device 10. The locking claw device 10 includes a fixing frame 104. The fixing frame 104 is set to a rectangle. A first fixing plate 9 is fixedly set at one end of the upper surface of the fixing frame 104. The rectangular width of the fixing frame 104 is smaller than the width of the first fixing plate 9. When the docking work is performed, it plays a fixing role on the first fixing rod 101 to prevent the first fixing rod 101 from shaking due to frequent work, resulting in a situation where it cannot work normally.

[0027] One end of the lower surface of the fixing frame 104 is fixedly connected to one end of the first fixing rod 101, and the upper end of one side of the first fixing rod 101 is rotatably connected to one end of the first fixing pin 105. The middle part of the outer cylindrical surface of the first fixing pin 105 is rotatably connected to one end of the first sliding sleeve 103, and the middle part of the other end of the first sliding sleeve 103 is slidingly connected to the surface of the fixing claw 106, and the other end of the fixing claw 106 is slidingly connected to the slide groove of the parking contactor 8. Four pin holes 12 and a lock hole 13 are arranged around the lower surface of the parking contactor 8. The parking contactor 8 is docked by the fixing claw 106 to control the parking contactor 8 to be recovered.

[0028] The first locating pin 6 and the locking threaded shaft 7 make a hole docking between the pin hole 12 and the locking hole 13, and one end of the fixing claw 106 is rotatably connected to the outer cylindrical surface of the second fixing pin 107. When the fixing claw 106 slides in the first sleeve 103, the second fixing pin 107 plays a role of supporting rotation to control the opening angle of the fixing claw 106. The second fixing pin 107 is set to be circular, and one end of the second fixing pin 107 is rotatably provided with a sliding buckle 102. The circular width value of the second fixing pin 107 is smaller than the width value of the sliding buckle 102. When the sliding buckle 102 is working, the second fixing pin 107 is used to control the fixing and rotating parts between the sliding buckle 102 and the fixing claw 106 to prevent the sliding buckle 102 and the fixing claw 106 from rotating normally during work.

[0029] Working principle: the driving motor 1 drives the driving shaft 3 to rotate, and the lifting plate 5 is controlled to drive the locking claw device 10 to tighten downward. When tightening downward, the sliding buckle 102 is pushed to make the fixed claw 106 slide in the first sleeve 103, so that the fixed claw 106 can quickly fix the docking device. The bearing 11 lubricates the bottom of the driving shaft 3 during operation to prevent the driving shaft 3 from generating heat at the bottom during long-term rotation and causing the driving shaft 3 to break. It also plays a locking role. When the docking is completed, the driving shaft 3 is controlled not to reverse and acts as a locking part. When the docking device is docked, the first locating pin 6 performs a preliminary position fixation on the pin hole 12 on the parking contactor 8. Under the action of the locking threaded shaft 7 driven by the driving shaft 3, the locking threaded shaft 7 is aligned with the locking hole 13 for rapid locking to prevent the parking contactor 8 from shaking and causing the docking device to malfunction.

[0030] 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 shall be included in the protection scope of the present invention.

Claims

1. A docking device for a cargo pallet to dock with a space station, comprising a drive motor (1), Features: The output end of the driving motor (1) is fixedly connected to one end of the driving shaft (3), the middle portion of the outer cylindrical surface of the driving shaft (3) is slidably connected to the middle portion of the lower surface of the lifting plate (5), the lower surface of the lifting plate (5) is connected to a locking claw device (10), and the locking claw device (10) comprises a fixing frame (104), one end of the lower surface of the fixing frame (104) is fixedly connected to one end of a first fixing rod (101), an upper end of one side of the first fixing rod (101) is rotatably connected to one end of a first fixing pin (105), and the middle portion of the outer cylindrical surface of the first fixing pin (105) is rotatably connected to one end of a first sliding sleeve (103).

2. A docking device for a cargo pallet and a space station according to claim 1, Features: The middle portion of the other end of the first sliding sleeve (103) is slidably connected to the surface of the fixing claw (106), and one end of the fixing claw (106) is rotatably connected to the outer circular surface of the second fixing pin (107).

3. A docking device for a cargo pallet and a space station according to claim 2, Features: The second fixing pin (107) is arranged in a circular shape, and a sliding buckle (102) is rotatably arranged at one end of the second fixing pin (107), and the circular width of the second fixing pin (107) is smaller than the width of the sliding buckle (102).

4. A docking device for a cargo pallet and a space station according to claim 1, Features: The upper surface of the drive motor (1) is fixedly connected to the middle of the lower surface of the first chassis (2), the middle of the upper surface of the first chassis (2) is fixedly connected to one end of the outer shell (4), and four first positioning pins (6) are fixedly provided on the upper surface of the outer shell (4).

5. A docking device for a cargo pallet and a space station according to claim 2, Features: The other end of the fixed claw (106) is slidably connected to the slide groove of the parking contactor (8), and four pin holes (12) and a lock hole (13) are arranged around the lower surface of the parking contactor (8).

6. A docking device for a cargo pallet and a space station according to claim 1, Features: The driving shaft (3) is arranged in a circular shape, and a locking threaded shaft (7) is fixedly arranged at the other end of the driving shaft (3), and the circular width of the driving shaft (3) is greater than the width of the locking threaded shaft (7).

7. A docking device for a cargo pallet and a space station according to claim 1, Features: The fixing frame (104) is arranged in a rectangular shape, and a first fixing plate (9) is fixedly arranged at one end of the upper surface of the fixing frame (104), and the width of the rectangle of the fixing frame (104) is smaller than the width of the first fixing plate (9).

8. A docking device for a cargo pallet and a space station according to claim 4, Features: The first chassis (2) is arranged in a square shape, a bearing (11) is fixedly arranged in the middle of the upper surface of the first chassis (2), and the width of the square of the first chassis (2) is greater than the width of the bearing (11).

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