A rotary motor driven lock release device

Abstract

The present application relates to the technical field of locking release device, disclose a kind of rotary motor driven locking release device, by motor and transmission mechanism drive ejector rod moves, to realize the locking and release of object between first locking unit and second locking unit, and still be provided with measuring mechanism, measuring mechanism includes first strain gauge and second strain gauge, real-time monitoring device whether normal work, and can measure the stress of the object being locked, real-time monitoring motion state, ensure that will not over movement cause damage to the object being locked.In addition, the present application also includes sealing cylinder and vacuum sealing unit, by the rotary motor of locking unit and transmission structure drive vacuum sealing unit stop valve movement, realize sealing and opening, can real-time measure locking force and ejector rod 5 position, locking can be carried out simultaneously vacuum sealing.The present application has the advantages of simple structure, compact, locking and release process can be repeated, power-off self-locking, real-time monitoring, overall structure is not magnetic.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of locking release devices, in particular to a rotary motor driven locking release device. BACKGROUND

[0002] Locking release devices are commonly used for storage and transportation and are widely used in various fields from daily life to aerospace. The commonly used locking release device is to lock the object by pushing the device, and when the device is away from the object, it is released. Therefore, the current locking release device controls the locking and releasing work by controlling the stroke of the device, and the stroke of the device is fixed, so the force of the locked object cannot be obtained, and if the device fails, it cannot be monitored whether it is working normally or the locking and releasing is in place.

[0003] The prior art discloses a space locking release device based on an ultrasonic motor and a control system thereof, which comprises an ultrasonic motor and a transmission mechanism; the transmission mechanism comprises a fixed frame, a transmission member, a jacking rod, a pushing joint and a driving member; one end of the transmission member is connected with the fixed frame, and the other end of the transmission member is in transmission connection with the driving member; a limiting groove is formed in the lower part of the fixed frame in the vertical direction; the jacking rod is in sliding connection with the fixed frame along the limiting groove; one end of the jacking rod is in transmission connection with the transmission member through the pushing joint; and the driving member is connected with the ultrasonic motor. The ultrasonic motor of the patent drives the jacking rod to move through the transmission mechanism, controls the locking and releasing process by controlling the motor, cannot obtain the force of the locked object, and cannot monitor whether it is working normally or the locking and releasing is in place if the device fails. SUMMARY

[0004] The purpose of the present application is to provide a rotary motor driven locking release device that can be monitored in real time.

[0005] In order to achieve the above object, the application provides a rotating motor driven locking release device, comprising a first locking unit and a second locking unit, the first locking unit and the second locking unit are oppositely arranged, the first locking unit and the second locking unit each comprise a mounting plate, a support frame, a rotating motor, a transmission mechanism, a pressure disc, a top rod and a measuring mechanism, the support frame and the pressure disc are arranged on both sides of the mounting plate, the rotating motor is mounted on the support frame, one end of the top rod is connected to the side of the pressure disc away from the mounting plate, the mounting plate is provided with a first mounting hole, the rotating motor is connected with the transmission mechanism, the transmission mechanism is connected with the pressure disc through the first mounting hole, the rotating motor drives the pressure disc to move along the direction perpendicular to the mounting plate through the transmission mechanism, and the measuring mechanism is arranged on the support frame and used for measuring the pressure and the rotation angle of the transmission mechanism.

[0006] As a preferred scheme, the transmission mechanism comprises an upper support plate, an upper transmission rod, a lower transmission rod, an upper transmission shaft, a middle transmission shaft, a lower transmission shaft, a bearing column, a pushing piece, a thrust rod and a cam,

[0007] The center of the cam is connected with the output shaft of the rotating motor, the cam is provided with a chute, the chute is a curved groove, the distance between the chute and the center of the cam gradually increases from one end to the other end, the thrust rod is slidably inserted into the chute,

[0008] The pushing piece is movably connected to the support frame along the direction parallel to the mounting plate, one end of the pushing piece is rotationally connected with the thrust rod, and the middle transmission shaft is movably connected to the other end of the pushing piece along the direction perpendicular to the mounting plate,

[0009] The upper support plate is connected to the support frame, the upper support plate is provided with a second mounting hole, the upper transmission shaft is connected with the hole wall of the second mounting hole, one end of the upper transmission rod is rotationally connected with the upper transmission shaft, and the other end of the upper transmission rod is rotationally connected with the middle transmission shaft,

[0010] The bearing column is vertically connected to the pressure disc, and the bearing column and the top rod are located on both sides of the pressure disc, one end of the lower transmission rod is rotationally connected with the middle transmission shaft, the other end of the lower transmission rod is rotationally connected with the bearing column through the lower transmission shaft, the axis of the bearing column is located on the same straight line as the axis of the first mounting hole, and the bearing column can move along the axis direction of the first mounting hole,

[0011] The measuring mechanism is used for measuring the rotation angle of the cam and the stress of the upper transmission rod.

[0012] As a preferred solution, the support frame is provided with a first sliding hole, the first sliding hole is a long hole, the length direction of the first sliding hole is parallel to the mounting plate, the pusher is provided with a sliding part, the sliding part is slidably inserted into the first sliding hole, the pusher is provided with a second sliding hole, the second sliding hole is a long hole, the length direction of the second sliding hole is perpendicular to the mounting plate, and the middle transmission shaft is slidably inserted into the second sliding hole.

[0013] As a preferred solution, the measuring mechanism comprises a first strain gauge and a second strain gauge, the first strain gauge is connected to the upper support plate, and two ends of the first strain gauge are located on two sides of the second mounting hole respectively, the upper transmission rod is located below the first strain gauge, the end of the upper transmission rod is in contact with the first strain gauge, and the end of the upper transmission rod in contact with the first strain gauge is oval; the side surface of the cam is provided with an abutting part, one end of the second strain gauge is connected to the support frame, the other end of the second strain gauge is suspended and the distance between the other end of the second strain gauge and the center of the cam is less than the distance between the outside of the abutting part and the center of the cam.

[0014] As a preferred solution, the measuring mechanism further comprises a force sensor, and the force sensor is arranged between the top rod and the pressure disc.

[0015] As a preferred solution, the first locking unit and the second locking unit are each provided with two rotary motors, the two rotary motors are located on two sides of the cam, and the two rotary motors are connected to the center of the cam.

[0016] As a preferred solution, a sealing cylinder and a vacuum sealing unit are further included, two ends of the sealing cylinder are connected to the mounting plates of the first locking unit and the second locking unit respectively, the pressure disc and the top rod of the first locking unit and the second locking unit are located in the sealing cylinder,

[0017] The vacuum sealing unit comprises a bellows and a stop valve, two ends of the bellows are connected to the mounting plate and the pressure disc of the first locking unit respectively, and the force bearing column of the first locking unit is located in the bellows,

[0018] The mounting plate of the second locking unit is provided with a cutoff groove, the first mounting hole of the second locking unit is arranged at the groove bottom of the cutoff groove, the cutoff valve comprises a valve disc and a valve cylinder, the valve cylinder is inserted into the first mounting hole of the second locking unit, one end of the valve cylinder is connected with the pressure disc of the second locking unit, the other end of the valve cylinder is connected with the mounting plate, the valve disc comprises a main body part and a blocking part, the blocking part is connected at one side of the main body part, the force bearing column of the second locking unit is connected with the other side of the main body part, the main body part is located in the cutoff groove, and the blocking part penetrates through the first mounting hole of the second locking unit and extends into the valve cylinder.

[0019] As a preferred scheme, the vacuum sealing unit further comprises a connecting piece, the connecting piece comprises a first connecting part, a second connecting part and a third connecting part connected in sequence, the diameter of the second connecting part is larger than that of the first connecting part and the third connecting part, the inner side of the end of the valve cylinder connected with the pressure disc is provided with a ring-shaped stop rim, the connecting piece is arranged in the valve cylinder, the first connecting part is located in the valve cylinder, the second connecting part abuts against the stop rim, and the third connecting part penetrates out of the valve cylinder and is connected with the pressure disc, the blocking part is provided with a guide hole, and the first connecting part is inserted into the guide hole.

[0020] As a preferred scheme, the vacuum sealing unit further comprises a spring, the spring is sleeved outside the first connecting part, and the spring is located between the second connecting part and the blocking part.

[0021] As a preferred scheme, the vacuum sealing unit further comprises a vacuum sealing ring, the vacuum sealing ring is arranged at the side of the main body part connected with the blocking part, the vacuum sealing ring is arranged concentrically with the first mounting hole of the second locking unit, and the diameter of the vacuum sealing ring is larger than that of the first mounting hole.

[0022] Compared with the prior art, the beneficial effects of the present application are that:

[0023] The rotary motor of the present application drives the ejector rod to move through the transmission mechanism, so as to lock and release the object between the first locking unit and the second locking unit, and the measuring mechanism is arranged on the support frame, the measuring mechanism measures the pressure and rotation angle of the transmission mechanism, so that whether the device works normally can be monitored in real time, the stress of the locked object can be measured, the motion state can be monitored in real time, and damage to the locked object caused by excessive motion can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the first perspective structure schematic view of the locking and releasing device driven by the rotary motor of the embodiment of the present application.

[0025] Figure 2 is a structural schematic view of a first locking unit or a second locking unit of an embodiment of the present application.

[0026] Figure 3 is a structural schematic view of a transmission mechanism of an embodiment of the present application.

[0027] Figure 4 is a structural schematic view of an upper transmission rod of an embodiment of the present application.

[0028] Figure 5 is a structural schematic view of a pushing member of an embodiment of the present application.

[0029] Figure 6 is a sectional view of a first locking unit of an embodiment of the present application.

[0030] Figure 7 is a sectional view of a second locking unit of an embodiment of the present application.

[0031] Figure 8 is a connection schematic view of a jacking rod and a measurement sensor of an embodiment of the present application.

[0032] Figure 9 is a structural schematic view of a pressure disc of an embodiment of the present application.

[0033] In the figure, 1 is a mounting plate; 101 is a first mounting hole; 102 is a stop groove; 2 is a support frame; 201 is a first sliding hole; 3 is a rotary motor; 4 is a pressure disc; 401 is a measurement hole; 5 is a jacking rod; 6 is an upper support plate; 601 is a second mounting hole; 7 is an upper transmission rod; 8 is a lower transmission rod; 9 is an upper transmission shaft; 10 is a middle transmission shaft; 11 is a lower transmission shaft; 12 is a force-bearing column; 13 is a pushing member; 1301 is a sliding part; 1302 is a second sliding hole; 14 is a pushing rod; 15 is a cam; 1501 is a sliding groove; 1502 is an abutting part; 1503 is a rotating shaft head; 1504 is a square groove; 16 is a first strain gauge; 17 is a second strain gauge; 18 is a force sensor; 19 is a sealing cylinder; 20 is a bellows; 21 is a valve plate; 2101 is a main body part; 2102 is an abutting part; 2103 is a guide hole; 22 is a valve cylinder; 2201 is a stop rim; 23 is a connecting member; 2301 is a first connecting part; 2302 is a second connecting part; 2303 is a third connecting part; 24 is a spring; 25 is a vacuum sealing ring. DETAILED DESCRIPTION

[0034] The specific embodiments of the present application are described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0035] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0038] Embodiment one

[0039] As Figures 1 to 9 shown, a rotary motor driven locking and releasing device of a preferred embodiment of the present application comprises a first locking unit and a second locking unit, the first locking unit and the second locking unit are oppositely arranged, the first locking unit and the second locking unit each comprise a mounting plate 1, a support frame 2, a rotary motor 3, a transmission mechanism, a pressure disc 4, a top rod 5 and a measuring mechanism, the support frame 2 and the pressure disc 4 are arranged on both sides of the mounting plate 1, the rotary motor 3 is mounted on the support frame 2, one end of the top rod 5 is connected vertically to the side of the pressure disc 4 away from the mounting plate 1, the mounting plate 1 is provided with a first mounting hole 101, the rotary motor 3 is connected with the transmission mechanism, the transmission mechanism passes through the first mounting hole 101 and is connected with the pressure disc 4, the rotary motor 3 drives the pressure disc 4 to move in a direction perpendicular to the mounting plate 1 through the transmission mechanism, the measuring mechanism is arranged on the support frame 2, and the measuring mechanism is used for measuring the pressure and rotation angle of the transmission mechanism. The rotary motor 3 of the present embodiment drives the top rod 5 to move through the transmission mechanism, so as to realize locking and releasing of the object between the first locking unit and the second locking unit, and the present embodiment further provides a measuring mechanism on the support frame 2, the measuring mechanism measures the pressure and rotation angle of the transmission mechanism, so as to monitor whether the device works normally in real time, and the stress of the locked object can be measured, the motion state can be monitored in real time, and damage to the locked object caused by excessive motion can be prevented.

[0040] In the embodiment, the transmission mechanism comprises the upper support plate 6, the upper transmission rod 7, the lower transmission rod 8, the upper transmission shaft 9, the middle transmission shaft 10, the lower transmission shaft 11, the force bearing column 12, the pushing member 13, the thrust rod 14 and the cam 15. The center of the cam 15 is connected with the output shaft of the rotary motor 3. The cam 15 is provided with a sliding groove 1501 which is a curved groove. The sliding groove 1501 in the embodiment is a spiral groove. The distance between the sliding groove 1501 and the center of the cam 15 gradually increases from one end to the other end. The thrust rod 14 is slidably inserted into the sliding groove 1501. The pushing member 13 is movably connected with the support frame 2 in a direction parallel to the mounting plate 1. One end of the pushing member 13 is rotatably connected with the thrust rod 14. The middle transmission shaft 10 is movably connected with the other end of the pushing member 13 in a direction perpendicular to the mounting plate 1. The upper support plate 6 is connected with the support frame 2. The upper support plate 6 is provided with a second mounting hole 601. The upper transmission shaft 9 is connected with the hole wall of the second mounting hole 601. One end of the upper transmission rod 7 is rotatably connected with the upper transmission shaft 9. The other end of the upper transmission rod 7 is rotatably connected with the middle transmission shaft 10. The force bearing column 12 is perpendicularly connected with the pressure disc 4. The force bearing column 12 and the jacking rod 5 are located on the two sides of the pressure disc 4. One end of the lower transmission rod 8 is rotatably connected with the middle transmission shaft 10. The other end of the lower transmission rod 8 is rotatably connected with the force bearing column 12 through the lower transmission shaft 11. The axis of the force bearing column 12 is located on the same line with the axis of the first mounting hole 101. The force bearing column 12 is movable along the axis direction of the first mounting hole 101. The measuring mechanism is used to measure the rotation angle of the cam 15 and the stress of the upper transmission rod 7. In working, the rotary motor 3 rotates to drive the cam 15 to rotate. When the cam 15 rotates, the thrust rod 14 slides along the sliding groove 1501 of the cam 15 to drive the pushing member 13 to move, thereby driving the middle transmission shaft 10 to move on the pushing member 13 in a direction perpendicular to the mounting plate 1, and then driving the upper transmission rod 7 and the lower transmission rod 8 to rotate, so as to drive the force bearing column 12 to move in a direction perpendicular to the mounting plate 1, thereby realizing the movement of the pressure disc 4 and the jacking rod 5 in a direction perpendicular to the mounting plate 1. When the jacking rods 5 of the first locking unit and the second locking unit are close to each other, the locking is realized. When the jacking rods 5 of the first locking unit and the second locking unit are away from each other, the releasing is realized. The device in the embodiment has simple and compact structure. The locking and releasing processes can be repeated through the rotary motor 3.

[0041] The pushing member 13 in the embodiment is provided with two pushing members 13 which are parallel and located on the two sides of the cam 15. The two pushing members 13 are respectively connected with the two ends of the thrust rod 14. The provision of the two pushing members can make the movement of the transmission mechanism more stable.

[0042] Specifically, the support frame 2 of the embodiment is provided with a first sliding hole 201, which is a long hole, and the length direction of the first sliding hole 201 is parallel to the mounting plate 1. The pushing member 13 is provided with a sliding part 1301, which is slidably inserted into the first sliding hole 201. The pushing member 13 is provided with a second sliding hole 1302, which is a long hole, and the length direction of the second long hole is perpendicular to the mounting plate 1. The middle transmission shaft 10 is slidably inserted into the second sliding hole 1302. The first sliding hole 201 and the second sliding hole 1302 can not only realize the movement of the pushing member 13 and the middle transmission shaft 10, but also limit the movement direction of the pushing member 13 and the middle transmission shaft 10.

[0043] In addition, the first locking unit and the second locking unit of the embodiment are each provided with two rotary motors 3, which are located on both sides of the cam 15 and are connected with the center of the cam 15. The two rotary motors 3 are simultaneously driven and serve as backup for each other. In the embodiment, the cam 15 is provided with a connecting shaft head 1503 on both sides, and the shaft head 1503 is provided with a square groove 1504. The output shaft of the rotary motor 3 is inserted into the square groove 1504 to realize the connection between the rotary motor 3 and the cam 15. The rotary motor 3 of the embodiment uses an ultrasonic motor, which has the characteristic of power-off self-locking.

[0044] Embodiment Two

[0045] The difference between the embodiment and the embodiment one is that the embodiment further describes the measuring mechanism on the basis of the embodiment one.

[0046] The measuring mechanism of the embodiment comprises a first strain gauge 16 and a second strain gauge 17, the first strain gauge 16 is connected to the upper support plate 6, and the two ends of the first strain gauge 16 are respectively located on the two sides of the second mounting hole 601, the upper transmission rod 7 is located below the first strain gauge 16, the end of the upper transmission rod 7 is in contact with the first strain gauge 16, and the end of the upper transmission rod 7 in contact with the first strain gauge 16 is in an elliptical shape; the side surface of the cam 15 is provided with an abutting portion 1502, one end of the second strain gauge 17 is connected to the support frame 2, and the other end of the second strain gauge 17 is suspended and the distance between the other end of the second strain gauge 17 and the center of the cam 15 is less than the distance between the outside of the abutting portion 1502 and the center of the cam 15. When locking, the rotary motor 3 drives the cam 15 to rotate counterclockwise, the abutting portion 1502 of the cam 15 is in contact with the second strain gauge 17, and when the cam 15 continues to rotate, the cam 15 drives the second strain gauge 17 to deform; when releasing, the rotary motor 3 drives the cam 15 to rotate clockwise, and the deformation of the second strain gauge 17 recovers, so that the rotation angle of the cam 15 can be measured. Moreover, since the end of the upper transmission rod 7 is in an elliptical shape, in the initial state, the rotary motor 3 is powered off and self-locked, the minor axis of the elliptical end of the upper transmission rod 7 is located in the vertical direction and just contacts the first strain gauge 16, and the first strain gauge 16 is not deformed; when locking, the rotary motor 3 drives the cam 15 to rotate, the thrust rod 14 slides along the sliding groove 1501 of the cam 15, drives the thrust piece to move, and then drives the middle transmission shaft 10 to move in the direction close to the mounting plate 1, so as to drive the upper transmission rod 7 to rotate, when the upper transmission rod 7 rotates, the contact surface radius of the elliptical end of the upper transmission rod 7 in contact with the first strain gauge 16 increases, so that the first strain gauge 16 deforms, so that the stress of the transmission rod can be measured, and then the stress borne by the jacking rod 5 can be obtained, and the locking force of the locked object can be obtained. The first strain gauge 16 can measure the total locking force in the locking state and the posture of the upper transmission rod 7, and the posture of the upper transmission rod 7 of the embodiment mainly refers to the angle of the upper transmission rod 7.

[0047] Further, the measuring mechanism of the embodiment further comprises a force sensor 18, and the force sensor 18 is arranged between the jacking rod 5 and the pressure disc 4. The two ends of the force sensor 18 are respectively connected to the pressure disc 4 and the jacking rod 5, the counterforce borne by the jacking rod 5 can be measured, and then the locking force of the locked object can be obtained. The force sensor 18 is arranged on each jacking rod 5 and is used for measuring the actual locking force distribution for adjustment. The measuring hole 401 is arranged on the pressure disc 4, and the force sensor 18 is arranged in the measuring hole 401.

[0048] The other structures of the embodiment are the same as those of the first embodiment, and details are not described herein.

[0049] Embodiment three

[0050] The difference between the embodiment and the embodiment two is that the locking and releasing device of the embodiment is further provided with a sealing mechanism on the basis of the embodiment two.

[0051] The locking and releasing device of the embodiment further comprises a sealing cylinder 19 and a vacuum sealing unit, two ends of the sealing cylinder 19 are connected with the mounting plates 1 of the first locking unit and the second locking unit respectively, the pressure disc 4 and the top rod 5 of the first locking unit and the second locking unit are located in the sealing cylinder 19, the vacuum sealing unit comprises a bellows 20 and a stop valve, two ends of the bellows 20 are connected with the mounting plate 1 and the pressure disc 4 of the first locking unit respectively, and the force bearing column 12 of the first locking unit is located in the bellows 20, the mounting plate 1 of the second locking unit is provided with a stop groove 102, the first mounting hole 101 of the second locking unit is arranged at the groove bottom of the stop groove 102, the stop valve is a sealing colloid, the stop valve comprises a valve sheet 21 and a valve cylinder 22, the valve cylinder 22 is inserted into the first mounting hole 101 of the second locking unit, one end of the valve cylinder 22 is connected with the pressure disc 4 of the second locking unit, the other end of the valve cylinder 22 is connected with the mounting plate 1, the valve sheet 21 comprises a main body part 2101 and a resisting part 2102, the resisting part 2102 is connected at one side of the main body part 2101, the force bearing column 12 of the second locking unit is connected with the other side of the main body part 2101, the main body part 2101 is located in the stop groove 102, and the resisting part 2102 passes through the first mounting hole 101 of the second locking unit and extends into the valve cylinder 22. In the embodiment, the locked object is placed in the sealing cylinder 19, the object is locked, the sealing cylinder 19 is vacuumized, the rotary motor 3 is started when the vacuum requirement is reached, the stop valve is moved towards the mounting plate 1, the main body part 2101 of the stop valve is abutted against the groove bottom of the stop groove 102, and the sealing cylinder 19 is sealed, so that the locking and releasing of the embodiment also plays a sealing opening.

[0052] Further, the vacuum sealing unit of the embodiment further comprises a connecting piece 23, the connecting piece 23 comprises a first connecting part 2301, a second connecting part 2302 and a third connecting part 2303 connected in sequence, the diameter of the second connecting part 2302 is larger than the diameter of the first connecting part 2301 and the third connecting part 2303, the inner side of the end of the valve cylinder 22 connected with the pressure disc 4 is provided with a ring-shaped stop rim 2201, the connecting piece 23 is arranged in the valve cylinder 22, the first connecting part 2301 is located in the valve cylinder 22, the second connecting part 2302 abuts against the stop rim 2201, and the third connecting part 2303 penetrates out of the valve cylinder 22 and is connected with the pressure disc 4, the blocking part 2102 is provided with a guide hole 2103, and the first connecting part 2301 is inserted into the guide hole 2103. The third connecting part 2303 of the embodiment is threadedly connected with the pressure disc 4, the third connecting part 2303 is in a T-shaped structure, the larger-diameter part of the third connecting part 2303 penetrates through the barrel opening of the valve cylinder 22 and the end face abuts against the pressure disc 4, and the smaller-diameter part of the third connecting part 2303 is connected with the threaded hole provided on the pressure disc 4. The second connecting part 2302 is located in the valve cylinder 22 and abuts against the stop rim 2201, so that the connecting piece 23 can be prevented from being separated from the valve cylinder 22, and the first connecting part 2301 cooperates with the guide hole 2103 to guide the movement of the stop valve.

[0053] In addition, the vacuum sealing unit of the embodiment further comprises a spring 24, the spring 24 is sleeved outside the first connecting part 2301, so that the spring 24 is located between the second connecting part 2302 and the blocking part 2102. The spring 24 has a buffering and vibration-absorbing effect, and can also increase the friction force to prevent the stop valve from loosening. In the embodiment, the spring 24 is a disc spring.

[0054] In addition, the vacuum sealing unit of the embodiment further comprises a vacuum sealing ring 25, the vacuum sealing ring 25 is arranged on the side of the main body part 2101 connected with the blocking part 2102, the vacuum sealing ring 25 is arranged concentrically with the first mounting hole 101 of the second locking unit, and the diameter of the vacuum sealing ring 25 is larger than the diameter of the first mounting hole 101. When sealing, the vacuum sealing ring 25 abuts between the main body part 2101 of the stop valve and the groove bottom of the stop groove 102, and plays a sealing role.

[0055] When locking, the rotary motor 3 drives the ejector rod 5 to move towards the middle object, the ejector rod 5 contacts the object and locks the object, at this time, the spring 24 is in a natural length state, the stop valve has not contacted the mounting plate 1, that is, has not been sealed, at this time, the locking release device stops moving, the object is in a locked state, the system is vacuumized, after the vacuum degree requirement is reached, the stop valve continues to move towards the mounting plate 1, the spring 24 is compressed, and the stop valve abuts against the groove bottom of the stop groove 102, the stop valve seals the vacuum, and the object is in a high-strength locked state. When releasing, the above process is reversed, that is, the stop valve first leaves the mounting plate 1, the spring 24 is restored from the compressed state to the natural length state, the object is still in a locked state, the rotary motor 3 continues to run, at this time, the ejector rod 5 slowly leaves the object, and the object is released. In the embodiment, when the stop valve is opened, the entire locking release device is placed in a larger vacuum cavity, the entire large cavity is vacuumized, after the requirement is reached, the stop valve above the locking release device is closed, then the large cavity is returned to an atmospheric state, and the entire locking release device inside is taken out, that is, vacuumization is realized.

[0056] The other structures of the embodiment are the same as those of embodiment two, and details are not described herein.

[0057] The working process of the application is as follows: (1) in an initial state, the rotary motor 3 is powered off and self-locked, the short axis of the elliptical surface of the upper transmission rod 7 is located in the vertical direction and just contacts the first strain gauge 16, the first strain gauge 16 has no deformation, and the second strain gauge 17 is located at the boundary between the abutting portion 1502 of the cam 15 and the gradually increasing outer diameter surface, and the entire device is locked.

[0058] (2) when locking, the rotary motor 3 is started to drive the cam 15 to rotate counterclockwise, the radius of the internal sliding groove 1501 contacted by the thrust rod 14 decreases, the thrust rod 14 moves rightward, and the middle transmission shaft 10 is lowered. At the same time, the upper transmission rod 7 rotates, the radius of the elliptical surface contacting the first strain gauge 16 increases, the first strain gauge 16 starts to deform, the deformation increases, and the deformation of the second strain gauge 17 gradually decreases from the maximum position of the outer radius of the gradually increasing outer diameter surface, and the deformation of the second strain gauge 17 demarcates the angular position and rotation direction of the cam 15.

[0059] (3) When the ejector rod 5 just contacts the locked object, the second locking unit's stop valve does not contact the stop valve sealing surface (i.e. the bottom of the stop groove 102), the deformation rate of the first strain gauge 16 increases, and the locking force starts to be measured. When the locking force reaches the maximum, the stop valve just completes the sealing. At this time, the sliding part 1301 of the pusher 13 reaches the rightmost side of the first sliding hole 201, the long axis of the upper transmission rod 7 is perpendicular to the mounting plate 1, the second strain gauge 17 reaches the minimum outer diameter of the cam 15, and is clamped by the abutting part 1502 of the cam 15, so that the ejector rod 5 cannot be further lowered. The measured deformation of the first strain gauge 16 is the maximum, the rotary motor 3 is powered off, and enters the self-locking state. The locking process is completed, and the locking state is entered. The device can monitor the motion state in real time to ensure that the locked object is not damaged by excessive motion.

[0060] (4) When release is needed, reverse voltage is applied to the rotary motor 3, and the rotary motor 3 drives the cam 15 to rotate clockwise. The inner sliding groove 1501 contacted by the push rod 14 has a larger radius, which drives the pusher 13 to move left and drives the middle transmission shaft 10 to rise. The deformation of the second strain gauge 17 gradually increases from the minimum, and the locking force measured by the first strain gauge 16 gradually decreases, and the vacuum seal is released. When the ejector rod 5 just leaves the locked object, the deformation rate of the first strain gauge 16 changes, and enters the mode of measuring the position of the ejector rod 5.

[0061] (5) When the deformation of the second strain gauge 17 reaches the maximum radius of the increasing outer diameter surface, and then suddenly increases, it is judged that it enters the locking prompt station, and the rotary motor 3 is powered off. At this time, the short axis of the elliptical surface of the upper transmission rod 7 is perpendicular to the mounting plate 1, and just contacts the first strain gauge 16, and the first strain gauge 16 has no deformation; return to the initial state, complete the release. And the locking and releasing process of (1) ~ (5) can be repeated.

[0062] (6) In the state of process (5), after confirming that the device does not need to work, continue to drive the rotary motor 3, and the deformation of the second strain gauge 17 does not change for a period of locking, and then suddenly decreases. At this time, the second strain gauge 17 is clamped by the abutting part 1502 of the cam 15, the upper transmission rod 7 is out of contact with the first strain gauge 16, the rotary motor 3 is automatically stopped, and the device enters the stop working state. Except for the first strain gauge 16, the measurement system stops working.

[0063] In summary, the embodiment of the present application provides a locking and releasing device driven by a rotary motor, which moves the ejector rod 5 through the motor and the transmission mechanism, so as to lock and release the object between the first locking unit and the second locking unit, and the embodiment further provides a measuring mechanism on the support frame 2, which includes a first strain gauge 16 and a second strain gauge 17, and measures the pressure and the rotation angle of the transmission mechanism, so as to monitor whether the device works normally in real time, and measure the stress of the locked object, monitor the motion state in real time, and ensure that the locked object will not be damaged by over-movement. In addition, the locking and releasing device of the embodiment of the present application further includes a sealing cylinder 19 and a vacuum sealing unit, which moves the stop valve of the vacuum sealing unit through the rotary motor 3 and the transmission structure of the locking unit, so as to realize sealing and opening. Therefore, the device of the embodiment of the present application has the advantages of simple and compact structure, repeatable locking and releasing process, power-off self-locking, real-time monitoring, and non-magnetic overall structure, and specifically, the device of the embodiment of the present application can measure the locking force and the position of the ejector rod 5 in real time, and can perform vacuum sealing while locking.

[0064] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A rotary motor driven locking release device, characterized by, The utility model relates to a double -sided locking device, including first locking unit and second locking unit, first locking unit and second locking unit are opposite and set up interval, first locking unit and second locking unit all include mounting plate (1), support frame (2), rotating motor (3), transmission mechanism, pressure disc (4), jacking rod (5) and measuring mechanism, support frame (2) and pressure disc (4) are located at both sides of mounting plate (1), rotating motor (3) is installed on support frame (2), one end of jacking rod (5) is connected perpendicularly in the side of pressure disc (4) away from mounting plate (1), mounting plate (1) is equipped with first mounting hole (101), rotating motor (3) is connected with transmission mechanism, transmission mechanism passes through first mounting hole (101) and is connected with pressure disc (4), rotating motor (3) drives pressure disc (4) to move along the direction perpendicular to mounting plate (1) through transmission mechanism, measuring mechanism is arranged on support frame (2), and measuring mechanism is used for measuring the pressure and rotation angle of transmission mechanism, Transmission mechanism includes upper support plate (6), upper transmission rod (7), lower transmission rod (8), upper transmission shaft (9), middle transmission shaft (10), lower transmission shaft (11), force bearing column (12), pusher (13), push rod (14) and cam (15), The center of cam (15) is connected with the output shaft of rotating motor (3), cam (15) is equipped with sliding slot (1501), sliding slot (1501) is curve slot, the distance between sliding slot (1501) and the center of cam (15) gradually increases from one end to the other end, push rod (14) is slidably inserted in sliding slot (1501), Pusher (13) is movably connected on support frame (2) along the direction parallel to mounting plate (1), one end of pusher (13) is rotatably connected with push rod (14), middle transmission shaft (10) is movably connected on the other end of pusher (13) along the direction perpendicular to mounting plate (1), Upper support plate (6) is connected on support frame (2), upper support plate (6) is equipped with second mounting hole (601), upper transmission shaft (9) is connected with the hole wall of second mounting hole (601), one end of upper transmission rod (7) is rotatably connected with upper transmission shaft (9), the other end of upper transmission rod (7) is rotatably connected with middle transmission shaft (10), The force bearing column (12) is vertically connected to the pressure disc (4), and the force bearing column (12) and the top rod (5) are located on both sides of the pressure disc (4), one end of the lower transmission rod (8) is rotatably connected to the middle transmission shaft (10), the other end of the lower transmission rod (8) is rotatably connected to the force bearing column (12) through the lower transmission shaft (11), the axis of the force bearing column (12) is located on the same straight line as the axis of the first mounting hole (101), and the force bearing column (12) can move along the axis direction of the first mounting hole (101), The measuring mechanism is used for measuring the rotation angle of the cam (15) and the stress of the upper transmission rod (7). The measuring mechanism comprises a first strain gauge (16) and a second strain gauge (17), the first strain gauge (16) is connected to the upper support plate (6), and the two ends of the first strain gauge (16) are located on both sides of the second mounting hole (601) respectively, the upper transmission rod (7) is located below the first strain gauge (16), the end of the upper transmission rod (7) is in contact with the first strain gauge (16), and the end of the upper transmission rod (7) in contact with the first strain gauge (16) is oval; the side surface of the cam (15) is provided with an abutting portion (1502), one end of the second strain gauge (17) is connected to the support frame (2), and the other end of the second strain gauge (17) is suspended and the distance between the other end of the second strain gauge (17) and the center of the cam (15) is less than the distance between the outside of the abutting portion (1502) and the center of the cam (15).

2. A rotary motor driven lock release device according to claim 1, wherein The support frame (2) is provided with a first sliding hole (201), the first sliding hole (201) is a long hole, the length direction of the first sliding hole (201) is parallel to the mounting plate (1), the pushing piece (13) is provided with a sliding portion (1301), the sliding portion (1301) is slidably inserted into the first sliding hole (201), the pushing piece (13) is provided with a second sliding hole (1302), the second sliding hole (1302) is a long hole, the length direction of the second sliding hole (1302) is perpendicular to the mounting plate (1), and the middle transmission shaft (10) is slidably inserted into the second sliding hole (1302).

3. A rotary motor driven lock release device according to claim 1, wherein The measuring mechanism further comprises a force sensor (18), and the force sensor (18) is arranged between the top rod (5) and the pressure disc (4).

4. A rotary motor driven lock release device according to claim 1, wherein The first locking unit and the second locking unit are each provided with two rotary motors (3), the two rotary motors (3) are located on both sides of the cam (15), and the two rotary motors (3) are connected with the center of the cam (15).

5. A rotary motor driven lock release device according to claim 1, wherein Further comprising a sealing cylinder (19) and a vacuum sealing unit, the two ends of the sealing cylinder (19) are connected with the mounting plate (1) of the first locking unit and the second locking unit respectively, the pressure disc (4) and the top rod (5) of the first locking unit and the second locking unit are located in the sealing cylinder (19), The vacuum sealing unit comprises a bellows (20) and a stop valve, two ends of the bellows (20) are connected with the mounting plate (1) and the pressure disc (4) of the first locking unit respectively, and the load bearing column (12) of the first locking unit is located in the bellows (20), The mounting plate (1) of the second locking unit is provided with a stop groove (102), the first mounting hole (101) of the second locking unit is arranged at the groove bottom of the stop groove (102), the stop valve comprises a valve plate (21) and a valve cylinder (22), the valve cylinder (22) is inserted into the first mounting hole (101) of the second locking unit, one end of the valve cylinder (22) is connected with the pressure disc (4) of the second locking unit, the other end of the valve cylinder (22) is connected with the mounting plate (1), the valve plate (21) comprises a main body part (2101) and a resisting part (2102), the resisting part (2102) is connected on one side of the main body part (2101), the load bearing column (12) of the second locking unit is connected with the other side of the main body part (2101), the main body part (2101) is located in the stop groove (102), and the resisting part (2102) passes through the first mounting hole (101) of the second locking unit and extends into the valve cylinder (22).

6. A rotary motor driven lock release device according to claim 5, wherein The vacuum sealing unit further comprises a connecting piece (23), the connecting piece (23) comprises a first connecting part (2301), a second connecting part (2302) and a third connecting part (2303) connected in sequence, the diameter of the second connecting part (2302) is greater than the diameters of the first connecting part (2301) and the third connecting part (2303), the inner side of one end of the valve cylinder (22) connected with the pressure disc (4) is provided with a ring-shaped stop rim (2201), the connecting piece (23) is arranged in the valve cylinder (22), the first connecting part (2301) is located in the valve cylinder (22), the second connecting part (2302) abuts against the stop rim (2201), the third connecting part (2303) passes out of the valve cylinder (22) and is connected with the pressure disc (4), and the resisting part (2102) is provided with a guide hole (2103), the first connecting part (2301) is inserted into the guide hole (2103).

7. A rotary motor driven lock release device according to claim 6, wherein The vacuum sealing unit further comprises a spring (24), the spring (24) is sleeved outside the first connecting part (2301), so that the spring (24) is located between the second connecting part (2302) and the resisting part (2102).

8. A rotary motor driven lock release device according to claim 5, wherein The vacuum sealing unit further comprises a vacuum sealing ring (25), the vacuum sealing ring (25) is arranged on the side of the main body part (2101) connected with the resisting part (2102), the vacuum sealing ring (25) is arranged concentrically with the first mounting hole (101) of the second locking unit, and the diameter of the vacuum sealing ring (25) is greater than the diameter of the first mounting hole (101).

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