CN117842394B - Load transfer device with automatic switching of driving power - Google Patents

Abstract

A load transfer device with automatic switching of driving power, the present invention relates to an automatic power switching device, in order to solve the problem that one transfer mechanism cannot complete the two parts of the work of optimal landing point and slow release landing on the moon, the present invention comprises a mounting plate, the load transfer device with automatic switching of driving power also comprises a power switching component, a swing component, a slow release component and an unlocking component, the power switching component and the slow release component are both mounted on the mounting plate, and the slow release component, the swing component and the unlocking component are all connected to the power switching component. The present invention utilizes one motor to complete the action requirements of two different swinging directions; the present invention relies on the arm to swing into place to switch power, reducing the demand for the number of control ports. The present invention belongs to the field of lunar exploration technology.

Description

A load transfer device with automatic switching of driving power

Technical Field

The present invention relates to an automatic power switching device, in particular to a load transfer device for automatic driving power switching. The present invention belongs to the technical field of lunar exploration.

Background Art

In lunar exploration, after the lunar probe successfully lands on the lunar surface, the scientific payload carried by the lunar probe needs to be transferred to the lunar surface. During the transfer process, the transfer mechanism needs to complete two tasks: optimal landing point selection and slow release of the lunar landing. Due to the limited number of control ports of the lunar probe, it is impossible to achieve both position selection and payload release with one motor. Therefore, a method is needed to achieve automatic power switching by moving the components in the device into place, so as to complete two different work requirements with one motor.

Summary of the invention

In order to solve the problem that one transfer mechanism cannot complete both the optimal landing point and the slow-release landing on the moon during lunar exploration, the present invention further proposes a load transfer device with automatic switching of driving power to meet the needs of completing two different tasks with one motor.

The technical solution adopted by the present invention to solve the above problems is:

The present invention includes a mounting plate, and the load transfer device for automatic switching of driving power also includes a power switching component, a swing component, a slow release component and an unlocking component. The power switching component and the slow release component are both mounted on the mounting plate, and the slow release component, the swing component and the unlocking component are all connected to the power switching component.

Furthermore, the power switching assembly includes a motor, a first drive gear, a second drive gear, a sliding spring, a sliding gear, a transmission gear, a transmission shaft, a first bearing frame, a second bearing frame, a third bearing frame and a spring sleeve. The motor is fixed to the mounting plate through a motor bracket, the output shaft of the motor is fixedly connected to the first drive gear, the first drive gear is meshed with the second drive gear, the second drive gear is fixedly mounted on the transmission shaft, the second drive gear is mounted between the first bearing frame and the mounting support through a bearing, the transmission shaft is fixed to the mounting plate through a bracket, the spring sleeve, the sliding spring, the sliding gear and the transmission gear are sequentially mounted on the transmission shaft from left to right, and the sliding gear can reciprocate along the length direction of the transmission shaft, the transmission gear is mounted on the second bearing frame and the third bearing frame through bearings, and the swing assembly, the slow release assembly and the unlocking assembly are all connected to the power switching assembly.

Furthermore, the swing assembly includes a worm wheel, a worm, an arm, a rotating shaft, a site selection rotating shaft, a third drive gear and an angle sensor. The transmission gear is meshed with the third drive gear. The third drive gear and the worm are installed on the same shaft. The worm cooperates with the worm wheel. The lower end of the arm is installed on the site selection rotating shaft through the rotating shaft. The site selection rotating shaft and the worm wheel are fixedly connected by a key. The angle sensor is connected to the mounting plate through a bracket.

Furthermore, the slow-release assembly includes a drum frame, a drum, an internal gear, a slow-release rope and a third bearing. The drum frame is fixedly connected to the mounting plate, the drum is located between the drum frame and the second bearing frame, one end of the drum is connected to the drum frame through the third bearing, the internal gear is mounted on the sliding gear, the internal teeth of the internal gear are meshed with the external teeth of the sliding gear, the internal gear is connected to the second bearing frame through a bearing and is fixed to the other end of the drum through a screw, one end of the slow-release rope is wound around the drum, and the other end of the slow-release rope is connected to the arm.

Furthermore, the unlocking assembly includes a card plate, an unlocking spring, a mounting support and a locking cam. The card plate is mounted on the sliding gear and is located between the mounting support and the reel frame. A sliding groove that cooperates with the card plate is provided in the mounting support. The card plate can slide between the unlocking spring and the locking cam. The locking cam is fixedly connected to the lower end of the arm rod. The lower end of the card plate is tightened by the locking cam. The upper end of the card plate compresses the unlocking spring under the pressure of the locking cam. The unlocking spring is located between the upper end of the card plate and the mounting plate.

Furthermore, the card plate is provided with a first card slot and a second card slot, and the first card slot and the second card slot are connected from bottom to top. Before the power is unlocked, the shoulder of the sliding gear is stuck in the first card slot, and after the power is unlocked, the shoulder of the sliding gear moves to the second card slot.

The beneficial effects of the present invention are:

1. The present invention utilizes one motor to complete the motion requirements of two different swing directions;

2. The present invention relies on the arm to swing into position to switch power, which reduces the number of control ports required;

3. By relying on springs to switch power, the impact generated is smaller than the impact generated by the action of pyrotechnics;

4. During the operation of the entire device, no excess material is generated, avoiding the impact on other parts.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic diagram of the overall structure of the present invention;

FIG3 is a diagram showing the working principle of the card board before unlocking the card board of the present invention;

FIG4 is a diagram showing the working principle of the card board after unlocking the card board of the present invention;

5 is a schematic cross-sectional view of a power switching device of the present invention;

FIG6 is a diagram showing the swinging process of the transfer device of the present invention;

FIG7 is a schematic diagram of the structure of the card board before unlocking the present invention;

FIG8 is a schematic diagram of the structure of the card board after unlocking the present invention;

FIG9 is a schematic diagram of the card board before unlocking;

FIG. 10 is a schematic diagram of the card board after unlocking.

Among them, the power switching assembly 1, the motor 1-1, the first driving gear 1-2, the second driving gear 1-3, the sliding spring 1-4, the sliding gear 1-5, the transmission gear 1-6, the transmission shaft 1-7, the first bearing frame 1-8, the second bearing frame 1-9, the third bearing frame 1-10; the spring sleeve 1-11, the metal rubber pad 1-12, the support sleeve 1-13, the buffer pad 1-14, the first bearing 1-15, the second bearing 1-16;

Swing assembly 2, worm wheel 2-1, worm 2-2, arm 2-3, rotating shaft 2-4, site selection rotating shaft 2-5, third driving gear 2-6, angle sensor 2-7;

Slow-release assembly 3, reel frame 3-1, reel 3-2, internal gear 3-3 and slow-release rope 3-4, third bearing 3-5;

Unlocking assembly 4, card plate 4-1, unlocking spring 4-2, mounting support 4-3, locking cam 4-4;

Mounting plate 5.

DETAILED DESCRIPTION

Specific implementation method 1: This implementation method is described in conjunction with Figures 1 to 9. This implementation method includes a mounting plate 5. The load transfer device for automatic switching of driving power also includes a power switching component 1, a swing component 2, a slow release component 3 and an unlocking component 4. The power switching component 1 and the slow release component 3 are both installed on the mounting plate 5, and the slow release component 3, the swing component 2 and the unlocking component 4 are all connected to the power switching component 1.

Specific implementation mode II: This implementation mode is described in conjunction with Figures 3 to 5. The power switching assembly in this implementation mode includes a motor 1-1, a first drive gear 1-2, a second drive gear 1-3, a sliding spring 1-4, a sliding gear 1-5, a transmission gear 1-6, a transmission shaft 1-7, a first bearing frame 1-8, a second bearing frame 1-9, a third bearing frame 1-10 and a spring sleeve 1-11. The motor 1-1 is fixed to the mounting plate 5 through a motor bracket, and the output shaft of the motor 1-1 is fixedly connected to the first drive gear 1-2, the first drive gear 1-2 is meshed with the second drive gear 1-3, and the second drive gear 1- 3 is fixedly mounted on the transmission shaft 1-7, the second driving gear 1-3 is mounted between the first bearing frame 1-8 and the mounting support 4-3 through a bearing, the transmission shaft 1-7 is fixed to the mounting plate 5 through a bracket, the spring sleeve 1-11, the sliding spring 1-4, the sliding gear 1-5 and the transmission gear 1-6 are sequentially sleeved on the transmission shaft 1-7 from left to right, and the sliding gear 1-5 can reciprocate along the length direction of the transmission shaft 1-7, the transmission gear 1-6 is mounted on the second bearing frame 1-9 and the third bearing frame 1-10 through a bearing, and the swing assembly 2, the slow release assembly 3 and the unlocking assembly 4 are all connected to the power switching assembly 1.

The second drive gear 1-3 is installed between the first bearing frame 1-8 and the mounting support 4-3 through the first bearing 1-15 and the second bearing 1-16. The second drive gear 1-3 is meshed with the first drive gear 1-2. When the motor 1-1 rotates, the second drive gear 1-3 also rotates. The transmission shaft 1-7 is connected to the second drive gear 1-3 through a key. The spline structure inside the sliding gear 1-5 cooperates with the external spline structure on the transmission shaft 1-7. The transmission shaft 1-7 and the sliding gear 1-5 transmit torque through the spline cooperation. At the same time, the sliding gear 1-5 can reciprocate along the length direction of the transmission shaft 1-7.

A metal rubber pad 1-12, a support sleeve 1-13, and a buffer pad 1-14 are also installed inside the transmission gear 1-6 to reduce the impact generated when power is switched.

The other components and connection relationships of this embodiment are the same as those of the first embodiment.

Specific implementation method three: This implementation method is explained in conjunction with Figures 3 to 7. The swing assembly 2 described in this implementation method includes a worm wheel 2-1, a worm 2-2, an arm 2-3, a rotating shaft 2-4, a site selection rotating shaft 2-5, a third driving gear 2-6 and an angle sensor 2-7. The transmission gear 1-6 is meshed with the third driving gear 2-6. The third driving gear 2-6 and the worm 2-2 are installed on the same shaft. The worm 2-2 cooperates with the worm wheel 2-1. The lower end of the arm 2-3 is installed on the site selection rotating shaft 2-5 through the rotating shaft 2-4. The site selection rotating shaft 2-5 and the worm wheel 2-1 are fixedly connected by a key. The angle sensor 2-7 is connected to the mounting plate 5 through a bracket.

The transmission gear 1-6 is meshed with the third driving gear 2-6. The third driving gear 2-6 and the worm 2-2 are installed on the same shaft. The worm 2-2 cooperates with the worm wheel 2-1. Before the power is unlocked, the transmission gear 1-6 and the third driving gear 2-6 cannot move because the worm wheel 2-1 and the worm 2-2 are self-locking.

The other components and connection relationships of this embodiment are the same as those of the first or second embodiment.

Specific embodiment four: This embodiment is described in conjunction with Figures 3 to 5. The slow-release assembly 3 in this embodiment includes a drum frame 3-1, a drum 3-2, an internal gear 3-3, a slow-release rope 3-4 and a third bearing 3-5. The drum frame 3-1 is fixedly connected to the mounting plate 5, and the drum 3-2 is located between the drum frame 3-1 and the second bearing frame 1-9. One end of the drum 3-2 is connected to the drum frame 3-1 through the third bearing 3-5. The internal gear 3-3 is mounted on the sliding gear 1-5, and the internal teeth of the internal gear 3-3 are meshed with the external teeth of the sliding gear 1-5. The internal gear 3-3 is connected to the second bearing frame 1-9 through a bearing and is fixed to the other end of the drum 3-2 through a screw. One end of the slow-release rope 3-4 is wound around the drum 3-2, and the other end of the slow-release rope 3-4 is connected to the arm 2-3.

The arm 2-3 is kept in a vertical state under the pulling force of the slow-release rope 3-4. When the motor does not rotate, the drum 3-2 does not rotate because the internal gear 3-3 is meshed with the sliding gear 1-5 and the drum 3-2 is connected to the internal gear 3-3. When the motor rotates, the drum 3-2 also rotates and releases the slow-release rope 3-4.

The other components and connection relationships of this embodiment are the same as those of the first, second or third embodiment.

Specific implementation mode five: This implementation mode is described in conjunction with Figures 5 to 8. The unlocking component 4 described in this implementation mode includes a card plate 4-1, an unlocking spring 4-2, a mounting support 4-3 and a locking cam 4-4. The card plate 4-1 is mounted on the sliding gear 1-5, and the card plate 4-1 is located between the mounting support 4-3 and the reel frame 3-1. A sliding groove that cooperates with the card plate 4-1 is provided in the mounting support 4-3. The card plate 4-1 can slide between the unlocking spring 4-2 and the locking cam 4-4. The locking cam 4-4 is fixedly connected to the lower end of the arm 2-3. The lower end of the card plate 4-1 is tightened by the locking cam 4-4. The upper end of the card plate 4-1 compresses the unlocking spring 4-2 under the pressure of the locking cam 4-4. The unlocking spring 4-2 is located between the upper end of the card plate 4-1 and the mounting plate 5.

The locking cam 4-4 is fixedly mounted on the arm 2-3, and the arm 2-3 is mounted on the site selection shaft 2-5 through the shaft 2-4. The site selection shaft 2-5 is connected to the worm gear 2-1 through a key, and the site selection shaft 2-5 swings with the rotation of the worm gear 2-1.

When the card plate 4-1 is unlocked for power switching, the locking cam 4-4 swings with the arm 2-3, and the concave part on the locking cam 4-4 is aligned with the card plate 4-1, and the card plate 4-1 pops out under the elastic force of the unlocking spring 4-2.

As shown in FIG4 , after the card plate 4-1 is unlocked, the sliding gear 1-5 slides along the transmission shaft 1-7 under the elastic force of the sliding spring 1-4, and the sliding gear 1-7 meshes with the internal teeth on the transmission gear 1-6. The torque generated when the motor 1-1 rotates is transmitted to the sliding gear 1-5 through the transmission shaft 1-7, and then transmitted to the transmission gear 1-6 through the sliding gear 1-5. The transmission gear 1-6 transmits the torque to the third driving gear 2-6 and the worm 2-2. The worm 2-2 drives the worm wheel 2-1 to rotate to complete the moon landing point selection action.

The other components and connection relationships of this embodiment are the same as those of the first, second, third or fourth embodiment.

Specific implementation six: This implementation is described in conjunction with Figures 9 and 10. In this implementation, the card plate 4-1 is provided with a first card slot and a second card slot, and the first card slot and the second card slot are connected from bottom to top. Before the power is unlocked, the shoulder of the sliding gear 1-5 is stuck in the first card slot. After the power is unlocked, the shoulder of the sliding gear 1-5 moves to the second card slot. A sliding spring 1-4 in a compressed state is installed between the sliding gear 1-5 and the second driving gear 1-3. When the shoulder of the sliding gear 1-5 is stuck by the first card slot of the card plate 4-1, the sliding gear 1-5 is meshed with the internal gear 3-3 of the reel 3-2.

The other components and connection relationships of this embodiment are the same as those of the first, second, third, fourth or fifth embodiment.

How it works

As shown in FIG3 , in the initial state, the sliding gear 1-5 is meshed with the internal gear 3-3 on the drum 3-2, and the sliding gear 1-5 is matched with the transmission shaft 1-7 through a spline. When the motor 1-1 rotates, the first drive gear 1-2 rotates together, and the second drive gear 1-3 rotates together under the drive of the first drive gear 1-2. The second drive gear 1-3 is fixedly connected to the transmission shaft 1-7, and the drum 3-2 and the internal gear 3-3 are fixedly connected together. The drum 3-2 rotates together with the internal gear 3-3, the sliding gear 1-5, the transmission shaft 1-7, etc., and the slow-release rope 3-4 begins to be released when the drum 3-2 rotates.

As shown in Figures 1 and 2, the arm 2-3 is kept in a vertical state by the release rope 3-4 on the drum 3-2. When the drum 3-2 releases the release rope 3-4, the arm 2-3 begins to swing downward under the gravity of the lunar surface to complete the load release work.

As shown in Figures 6 to 8, the locking cam 4-4 is fixedly mounted on the arm 2-3 and swings with the arm 2-3. When the arm 2-3 swings into place, the card plate 4-1 is aligned with the notch on the locking cam 4-4, and the card plate 4-1 pops out under the elastic force of the unlocking spring 4-2, and the restriction of the card plate 4-1 on the sliding gear 1-5 also disappears.

As shown in Fig. 4, the sliding gear 1-5 slides a certain distance on the transmission shaft 1-7 under the action of the sliding spring 1-4. After the sliding gear 1-5 is separated from the internal gear 3-3, the sliding gear 1-5 meshes with the internal teeth of the transmission gear 1-6. The motor 1-1 continues to rotate, and the transmission shaft 1-7 transmits the torque to the transmission gear 1-6 through the spline cooperation with the sliding gear 1-5. The transmission gear 1-6 drives the worm 2-2 through the third driving gear 2-6. The worm 2-2 cooperates with the worm wheel 2-1 and drives the worm wheel 2-1 to rotate, completing the site selection of the load landing point.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims (2)

1. A load transfer device for automatic switching of driving power, comprising a mounting plate (5), characterized in that: the load transfer device for automatic switching of driving power further comprises a power switching assembly (1), a swing assembly (2), a slow-release assembly (3) and an unlocking assembly (4), the power switching assembly (1) and the slow-release assembly (3) are both mounted on the mounting plate (5), and the slow-release assembly (3), the swing assembly (2) and the unlocking assembly (4) are all connected to the power switching assembly (1); The power switching assembly comprises a motor (1-1), a first driving gear (1-2), a second driving gear (1-3), a sliding spring (1-4), a sliding gear (1-5), a transmission gear (1-6), a transmission shaft (1-7), a first bearing frame (1-8), a second bearing frame (1-9), a third bearing frame (1-10) and a spring sleeve (1-11); the motor (1-1) is fixed to a mounting plate (5) via a motor bracket; an output shaft of the motor (1-1) is fixedly connected to the first driving gear (1-2); the first driving gear (1-2) is meshed with the second driving gear (1-3); and the second driving gear (1-3) is fixedly mounted on the transmission shaft (1-7). The second driving gear (1-3) is mounted between the first bearing frame (1-8) and the mounting support (4-3) via a bearing, the transmission shaft (1-7) is fixed to the mounting plate (5) via a bracket, the spring sleeve (1-11), the sliding spring (1-4), the sliding gear (1-5) and the transmission gear (1-6) are sequentially mounted on the transmission shaft (1-7) from left to right, and the sliding gear (1-5) can reciprocate along the length direction of the transmission shaft (1-7), the transmission gear (1-6) is mounted on the second bearing frame (1-9) and the third bearing frame (1-10) via a bearing, and the swing assembly (2), the slow-release assembly (3) and the unlocking assembly (4) are all connected to the power switching assembly (1); The swing assembly (2) comprises a worm wheel (2-1), a worm (2-2), an arm (2-3), a rotating shaft (2-4), a site selection rotating shaft (2-5), a third driving gear (2-6) and an angle sensor (2-7); the transmission gear (1-6) meshes with the third driving gear (2-6); the third driving gear (2-6) and the worm (2-2) are mounted on the same shaft; the worm (2-2) cooperates with the worm wheel (2-1); the lower end of the arm (2-3) is mounted on the site selection rotating shaft (2-5) via the rotating shaft (2-4); the site selection rotating shaft (2-5) and the worm wheel (2-1) are fixedly connected via a key; and the angle sensor (2-7) is connected to the mounting plate (5) via a bracket and is located at one end of the worm (2-2); The slow-release assembly (3) comprises a drum frame (3-1), a drum (3-2), an internal gear (3-3), a slow-release rope (3-4) and a third bearing (3-5); the drum frame (3-1) is fixedly connected to the mounting plate (5); the drum (3-2) is located between the drum frame (3-1) and the second bearing frame (1-9); one end of the drum (3-2) is connected to the drum frame (3-1) via the third bearing (3-5); the internal gear (3-3) is sleeved on the sliding gear (1-5); the internal teeth of the internal gear (3-3) are meshed with the external teeth of the sliding gear (1-5); the internal gear (3-3) is connected to the second bearing frame (1-9) via a bearing and is fixed to the other end of the drum (3-2) via a screw; one end of the slow-release rope (3-4) is wound around the drum (3-2); and the other end of the slow-release rope (3-4) is connected to the arm (2-3); The unlocking assembly (4) comprises a card plate (4-1), an unlocking spring (4-2), a mounting support (4-3) and a locking cam (4-4); the card plate (4-1) is sleeved on the sliding gear (1-5), and the card plate (4-1) is located between the mounting support (4-3) and the reel frame (3-1); a sliding groove cooperating with the card plate (4-1) is provided in the mounting support (4-3); the card plate (4-1) can slide between the unlocking spring (4-2) and the locking cam (4-4); the locking cam (4-4) is fixedly connected to the lower end of the arm (2-3); the lower end of the card plate (4-1) is pressed against by the locking cam (4-4); the upper end of the card plate (4-1) compresses the unlocking spring (4-2) under the pressure of the locking cam (4-4); and the unlocking spring (4-2) is located between the upper end of the card plate (4-1) and the mounting plate (5). 2. A load transfer device with automatic switching of driving power according to claim 1, characterized in that: a first card slot and a second card slot are provided on the card plate (4-1), the first card slot and the second card slot are connected from bottom to top, before the power is unlocked, the shoulder of the sliding gear (1-5) is stuck in the first card slot, and after the power is unlocked, the shoulder of the sliding gear (1-5) moves to the second card slot.