CN105841993A - Multifunctional unlocking/locking device - Google Patents

Abstract

The invention discloses a multifunctional unlocking and locking device, which belongs to the technical field of aerospace engineering; it comprises: a lock box, a lock pin, a position pin, a spring, a limit switch contact, a limit switch and a process screw; the lock pin is located in the lock box In the stepped axial through hole of the lock pin, the spring is set on the lock pin; after the position pin passes through the two waist-shaped through holes at one end of the lock box, it is fixed in the radial through hole at the conical end of the lock pin; the process screw and the lock box The threaded hole at the other end is threaded, the position pin and the process screw both limit the axial movement of the lock pin; the limit switch contact is fixed on the ring limit of the lock pin after passing through the waist-shaped through hole at the other end of the lock box. The outer peripheral surface of the bit boss; the limit switch is fixed on the outer surface of the lock box. When the lock pin moves in place, the contact of the limit switch contacts with the limit switch to indicate the position; the device can realize one-time locking, one-time unlocking, The function of secondary locking and locking in place judgment, and can judge whether the lock pin is in place.

Description

A multifunctional unlocking and locking device

technical field

The invention belongs to the technical field of aerospace engineering, and in particular relates to a multifunctional unlocking and locking device.

Background technique

At present, there are many unlocking and locking devices used for automatic packaging of extraterrestrial objects in the aerospace field at home and abroad, but there are generally the following deficiencies: only one locking and unlocking of the locking position can be achieved, and there is no function of judging whether the locking position is in place, and the function is single; unlocking needs Driven by a motor or gunpowder, the device has a complex structure and low reliability.

Contents of the invention

In view of this, the object of the present invention is to provide a multi-functional unlocking and locking device, which can realize the functions of one-time locking, one-time unlocking, second-time locking and locking in place judgment, and has the characteristics of being able to realize double-locking positions and weak unlocking and strong locking , and can determine whether the locking pin is in place.

The present invention is achieved through the following technical solutions:

A multifunctional unlocking and locking device, comprising: a lock box, a lock pin, a position pin, a spring, a limit switch contact, a limit switch and a process screw;

The inside of the lock box is processed with a stepped axial through hole, one end of the lock box is processed with two opposite waist-shaped through holes along its radial direction, and the other end is processed with opposite waist-shaped through holes and threads along its radial direction. hole;

One end of the lock pin is a truncated cone, the other end is a cylinder, the end of the truncated cone is processed with a radial through hole, and the end of the cylinder is provided with an annular limiting boss;

The connection relationship is as follows: the lock pin is located in the stepped axial through hole of the lock box, the spring is set on the lock pin, and one end of the spring is in contact with the annular limit boss of the lock pin, and the other end is in contact with the step of the lock box. The stepped surface of the type axial through hole; the position pin passes through the two waist-shaped through holes at one end of the lock box, and is fixed in the radial through hole at the conical end of the lock pin; the process screw is threaded with the threaded hole at the other end of the lock box connection, and the screw rod of the process screw is in contact with the end face of the ring-shaped limit boss of the lock pin that does not interfere with the spring. Both the position pin and the process screw limit the axial movement of the lock pin; the limit switch contact passes through the lock After the waist-shaped through hole at the other end of the box, it is fixed on the outer circumferential surface of the annular limit boss of the lock pin; the limit switch is fixed on the outer surface of the lock box, and when the lock pin moves in place, the limit switch contact and the limit The switch contacts are in place to prompt.

Further, the multi-functional unlocking and locking device is installed in the annular cavity of the locking disc (), when the position pin moves to the position along the waist-shaped through hole of the lock box, the frustum end of the locking pin and the annular cavity of the locking disc The primary lock hole on the outer peripheral surface cooperates, and the limit boss of the cantilever conflicts with the position pin. After the axial movement of the lock pin is limited by the pin, the process screw is removed. At this time, the unlocking and locking device is in the primary locking state.

Further, when the cantilever is lifted to a set height to release the restriction on the position pin, the cylindrical end of the lock pin abuts against the inner circumferential surface of the annular cavity of the locking disc, at this time, the unlocking and locking device unlocks once.

Further, when the cylindrical end of the lock pin cooperates with the secondary lock hole of the locking disk, the pin moves into place along the waist-shaped through hole of the lock box. At this time, the limit switch contact contacts the limit switch, and the unlocking and locking The device is in secondary lock state.

Beneficial effects: (1) The present invention can realize the functions of primary locking, primary unlocking, secondary locking, and in-place judgment, and has the characteristics of double locking positions, weak unlocking, and strong locking; the primary locking and secondary locking of the unlocking and locking device The locking can realize stable and reliable locking, which is a strong locking, and the unlocking of a lock can be realized by lifting the cantilever, the unlocking process is easy to realize, and the automatic unlocking of the device can be realized; it solves the problem of only one locking position and simple locking function of the existing locking device , It is impossible to judge whether the segment locking is in place and the locking reliability is low.

(2) The cylindrical end and the truncated cone end of the lock pin of the present invention include two locking working sections, which have double locking functions of primary locking and secondary locking, and the locking is stable and reliable.

(3) In the present invention, the limit switch installed on the lock box and the limit switch contact installed on the lock pin are contacted, so that the device has an in-position judgment function during the secondary locking, and remote monitoring is realized.

Description of drawings

Fig. 1 is a top sectional view of the primary locking of the unlocking and locking device;

Fig. 2 is a top view of the unlocking and locking device once locked;

Fig. 3 is a front view of the unlocking and locking device once locked;

Fig. 4 is a top working view of the unlocking and locking device once the lock is unlocked;

Fig. 5 is a front view of the unlocking and locking device after a lock is unlocked;

Fig. 6 is a top sectional view of the secondary locking of the unlocking and locking device;

Fig. 7 is a top working view of the secondary locking of the unlocking and locking device;

Fig. 8 is a front view of the unlocking and locking device for secondary locking.

Among them, 1-lock box, 2-lock pin, 3-position pin, 4-spring, 5-limit switch contact, 6-limit switch, 7-hexagon socket screw, 8-process screw, 9-cantilever, 10 - Shrink disc.

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The present invention provides a multifunctional unlocking and locking device, referring to accompanying drawing 1, comprising: lock box 1, lock pin 2, position pin 3, spring 4, limit switch contact 5, limit switch 6, hexagon socket head cap screw 7 and process screw 8;

Peripheral equipment includes: a cantilever 9 and a locking disc 10 in the automatic packaging device for sampling extraterrestrial celestial bodies; the cantilever 9 is provided with a limit boss; the locking disc 10 is processed with an annular cavity, and the inner cavity of the annular cavity 1. Secondary keyhole 10-2 and primary keyhole 10-1 are respectively processed on the outer peripheral surface;

The lock box 1 is processed with a stepped axial through hole, one end of the lock box 1 is processed with two opposite waist-shaped through holes along its radial direction, and the other end is processed with opposite waist-shaped through holes along its radial direction and threaded holes;

One end of the lock pin 2 is a truncated cone, the other end is a cylinder, the truncated cone end 2-1 is processed with a radial through hole, and the cylindrical end 2-2 is provided with an annular limiting boss;

The connection relationship is as follows: the lock pin 2 is located in the stepped axial through hole of the lock box 1, the spring 4 is set on the lock pin 2, and one end of the spring 4 is in contact with the annular limit boss of the lock pin 2, and the other end is Collide with the stepped surface of the stepped axial through hole of the lock box 1; the position pin 3 passes through the two waist-shaped through holes at one end of the lock box 1, and is fixed in the radial through hole at the conical end of the lock pin 2; The screw 8 is threadedly connected with the threaded hole at the other end of the lock box 1, and the screw rod of the process screw 8 is in contact with the end surface of the ring-shaped limiting boss of the lock pin 2 that does not conflict with the spring 4, and the position pin 3 and the process screw 8 are locked. The axial movement of the pin 2 is limited; the limit switch contact 5 passes through the waist-shaped through hole at the other end of the lock box 1, and is fixed on the outer circumferential surface of the annular limit boss of the lock pin 2 by the hexagon socket head cap screw 7; The limit switch 6 is fixed on the outer surface of the lock box 1 by the hexagon socket head cap screw 7, and when the lock pin 2 moves into place, the limit switch contact 5 contacts with the limit switch 6 and prompts in place;

Working principle: see accompanying drawings 1-3, the multifunctional unlocking and locking device is installed in the annular cavity of the locking disc 10, exerts force on the cylindrical end of the lock pin 2 and compresses the spring 4 so that the lock pin 2 moves toward its frustum of cone 2-1 moves axially, and the position pin 3 moves along the waist-shaped through hole of the lock box 1 until the position pin 3 moves to the limit position. The lock hole 10-1 cooperates, and the lock pin 2 constrains the rotation of the lock disc 10; the limit boss of the cantilever 9 conflicts with the position pin 3, restricts the axial movement of the position pin 3, and then limits the axial movement of the lock pin 2 movement; the lock pin 2 keeps still and removes the process screw 8, and now the device is in a locked state. mechanical environment;

Referring to accompanying drawings 4-5, when the extraterrestrial celestial body sampling automatic packaging device with the device of the present invention arrives at the lunar surface, the device performs an action of unlocking the lock state once, that is, the cantilever 9 lifts the set height and releases the alignment pin 3 After being limited, the lock pin 2 moves toward its cylindrical end under the action of the spring 4, the frustum of the cone 2-1 of the lock pin 2 withdraws from the primary lock hole 10-1 of the shrink disk 10, and the cylindrical end of the lock pin 2 2-2 against the inner circumferential surface of the annular cavity of the locking disc 10, at this time, the device unlocks once the locking action is completed, and the locking disc 10 is free to rotate free from the constraint of the locking pin 2;

Referring to accompanying drawings 6-8, during the rotation of the locking disc 10, when the secondary locking hole 10-2 on the locking disc 10 is opposite to the cylindrical end of the locking pin 2, the cylindrical end 2-2 of the locking pin 2 Under the action of the spring 4, extend into the secondary lock hole 10-2 of the locking disc 10 until the position pin 3 moves to another extreme position along the waist-shaped through hole of the lock box 1. At this time, the limit switch contact 5 When in contact with the limit switch 6, a complete locking signal is sent, the device completes the secondary locking, the locking disc 10 is completely restrained and fixed, and the secondary locking state is strong locking, which can meet the requirements of the extraterrestrial celestial body sampling automatic packaging device returning to the ground In various mechanical environments during the process, the secondary locking function of the device is always effective under the condition that the structure does not undergo destructive damage.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. A multifunctional unlocking and locking device, characterized in that it comprises: a lock box (1), a lock pin (2), a position pin (3), a spring (4), a limit switch contact (5), a limit switch switch (6) and process screw (8); The lock box (1) is processed with a stepped axial through hole, one end of the lock box (1) is processed with two opposite waist-shaped through holes along its radial direction, and the other end is processed with two opposite waist-shaped through holes along its radial direction. Waist-shaped through holes and threaded holes; One end of the lock pin (2) is a truncated cone, the other end is a cylinder, the end of the truncated cone is processed with a radial through hole, and the end of the cylinder is provided with an annular limiting boss; The connection relationship is as follows: the lock pin (2) is located in the stepped axial through hole of the lock box (1), the spring (4) is sleeved on the lock pin (2), and one end of the spring (4) is in contact with the lock pin ( 2), the other end is in contact with the stepped surface of the stepped axial through hole of the lock box (1); the position pin (3) passes through the two waist-shaped through holes at one end of the lock box (1). After the hole, it is fixed in the radial through hole at the end of the conical frustum of the lock pin (2); the process screw (8) is threadedly connected with the threaded hole at the other end of the lock box (1), and the screw rod of the process screw (8) interferes with the lock pin On the end face of the annular limit boss of (2) that does not conflict with the spring (4), the position pin (3) and the process screw (8) both limit the axial movement of the lock pin (2); the limit switch touches After the head (5) passes through the waist-shaped through hole at the other end of the lock box (1), it is fixed on the outer circumferential surface of the annular limit boss of the lock pin (2); the limit switch (6) is fixed on the lock box (1) When the lock pin (2) moves into place, the limit switch contact (5) contacts with the limit switch (6) to indicate the position. 2. A multifunctional unlocking and locking device as claimed in claim 1, characterized in that, said multifunctional unlocking and locking device is installed in the annular cavity of the locking disk (10), when the position pin (3) moves along the lock The waist-shaped through hole of the box (1) moves into place, the conical end of the lock pin (2) cooperates with the primary lock hole on the outer circumferential surface of the annular cavity of the locking disc (10), and the limit boss of the cantilever (9) matches with the The position pin (3) conflicts, and after the axial movement of the lock pin (2) is limited by the pin (3), the process screw (8) is removed, and at this time, the unlocking and locking device is in a primary locking state. 3. A multi-functional unlocking and locking device as claimed in claim 1, characterized in that, when the cantilever (9) is raised to a set height and the restriction on the position pin (3) is released, the cylindrical end of the lock pin (2) touches the On the inner circumferential surface of the annular cavity of the shrink disc (10), at this time, the unlocking and locking device releases the primary locking. 4. A multifunctional unlocking and locking device as claimed in claim 1, characterized in that, when the cylindrical end of the lock pin (2) cooperates with the secondary lock hole of the locking disk (10), the pin (3) moves along the lock The waist-shaped through-hole of the box (1) is moved into place, at this moment, the limit switch contact (5) is in contact with the limit switch (6), and the unlocking and locking device is in the secondary locking state.