CN115434576B - Nacelle pivot locking structure - Google Patents

Abstract

The present invention proposes a pod rotating shaft locking structure, including: a locking shaft execution unit and a locking shaft driving unit; the locking shaft driving unit includes: a driving mounting seat, a pull rod, a guide rail, a first electromagnet and a second electromagnet, wherein, When the first electromagnet core moves along the guide rail to the direction close to the lock shaft execution unit, the second electromagnet core pops up in the same direction, and drives the pull rod to apply driving force to the lock shaft execution unit; the second electromagnet core moves along the guide rail When moving away from the lock shaft actuator unit, the first electromagnet core pops up in the same direction, and drives the pull rod to apply a driving force to the lock shaft actuator unit; the lock shaft actuator unit responds to the driving force and locks or unlocks the pod shaft . The pod rotating shaft locking structure of the present invention uses the power-off holding force of the electromagnet to design a double locking block structure, so that the rotating shaft locking mechanism has self-locking capability and improves the reliability of the locking function.

Description

Locking structure of a rotating shaft of a pod

technical field

The invention relates to the technical field of mechanical design, in particular to a locking structure of a rotating shaft of a pod.

Background technique

With the continuous development of photoelectric detection technology, the application of airborne photoelectric pods is becoming more and more extensive, and its loading and working environment is increasingly harsh and complex. The boresight of the sensor is locked at the protected position to prevent the optical window from being impacted by sand, stones or foreign objects when the aircraft takes off and lands and the attitude changes.

Because the shape, volume, and weight of the airborne photoelectric pod are strictly limited, and the internal space occupancy rate is extremely high, the layout space left for the shaft locking mechanism is very limited, and there is a common problem in the design of the prior art, the pod shaft There is no reliable self-locking ability in the locked state or unlocked state. When encountering strong shock vibration or aircraft attitude changes, the locking function will fail, and even the locking mechanism will be damaged.

Contents of the invention

The technical problem to be solved by the present invention is: the rotating shaft of the pod has no reliable self-locking ability in the locked state or the unlocked state. When encountering strong impact vibration or aircraft attitude changes, the locking function will fail, and even the locking mechanism will be damaged. In view of this, the present invention provides a locking structure for the rotating shaft of the pod.

The technical solution adopted in the present invention is that the pod rotating shaft locking structure includes: a locking shaft execution unit and a locking shaft driving unit; the locking shaft driving unit includes: a driving mounting seat; a pull rod installed on the driving mounting On the seat, one end is connected with the lock shaft execution unit; the guide rail is installed on the drive mounting seat, and is slidably connected with the pull rod; the first electromagnet and the second electromagnet are arranged on the drive mounting seat , the iron cores of the first electromagnet and the second electromagnet are respectively connected to the other end of the pull rod; wherein, the first electromagnet is energized by internal magnetic force, and the iron core approaches the rail along the guide rail. When moving in the direction of the lock shaft execution unit, the second electromagnet reversely energizes the iron core to pop up along the guide rail to the direction close to the lock shaft execution unit, and drives the pull rod to the lock shaft execution unit Apply the driving force in the first direction; the second electromagnet is energized by the internal magnetic force, and when it moves along the guide rail in a direction away from the locking shaft execution unit, the first electromagnet is energized in the opposite direction. The core pops up along the guide rail in a direction away from the lock shaft execution unit, and drives the pull rod to apply a driving force in a second direction to the lock shaft execution unit; and, the first direction and the second direction The directions in the plane where the pull rod is located are opposite; the shaft lock execution unit responds to the driving force in the first direction to lock the rotating shaft of the pod; the shaft lock execution unit responds to the driving force in the second direction The driving force unlocks the rotating shaft of the pod.

In one embodiment, the locking shaft execution unit includes: a locking seat; a first locking block and a second locking block, which are arranged in holes reserved in the locking seat; a first locking rod and a second locking rod, The first locking rod is inserted into the first locking block; the second locking rod is inserted into the second locking block; Wherein, when the first locking rod drives the first locking block to rotate, a driving force is applied to the second locking block to make the second locking block rotate; the torsion spring is arranged on the first locking rod and connected with the tie rod.

In one embodiment, when the torsion spring is driven by the pull rod from the first direction, the torsion spring rotates counterclockwise, driving the first locking lever to rotate counterclockwise, and the first locking lever rotates counterclockwise. The rod drives the first locking block to rotate, and the first locking block drives the second locking block to rotate toward the axis of the pod shaft to complete the locking of the pod shaft; when the torsion spring is When the pull rod comes from the driving force from the second direction, the torsion spring rotates clockwise, driving the first locking lever to rotate clockwise, the first locking lever drives the first locking block to rotate, the The first locking block drives the second locking block to rotate in a direction away from the axis of the pod rotating shaft, so as to complete the unlocking of the pod rotating shaft.

In one embodiment, the elastic cylindrical pin, the iron core of the first electromagnet and the iron core of the second electromagnet are connected to the pull rod through the elastic cylindrical pin.

In one embodiment, the guide rail slider is fixedly connected to the pull rod through screws, and the guide rail slider is used to drive the pull rod along the first direction or the second pull rod on the guide rail. Swipe up in two directions.

In one embodiment, a screw is tightened to lock the first locking block to the first locking rod.

In one embodiment, the spring pressing piece is arranged on the top of the torsion spring, and the torsion spring is fixed and locked by screws.

In one embodiment, the left arm of the torsion spring is inserted into the U-shaped slot on the first locking rod, and the right arm passes through the waist-shaped hole on the pull rod.

In one embodiment, the lock shaft driving unit further includes: an optocoupler switch, when the lock shaft execution unit locks the pod rotating shaft, the pull rod moves to the end close to the lock shaft execution unit and cuts off. out of the optocoupler switch; when the shaft lock execution unit unlocks the pod shaft, the pull rod moves to the end away from the shaft lock execution unit to cut into the optocoupler switch.

In one embodiment, the lock shaft driving unit further includes: an optocoupler bracket, and the optocoupler switch is arranged on the driving installation seat through the optocoupler bracket.

Adopt above-mentioned technical scheme, the present invention has following advantage at least:

The pod rotating shaft locking structure of the present invention uses the power-off holding force of the electromagnet to design a double locking block structure, so that the rotating shaft locking mechanism has self-locking ability and improves the reliability of the locking function.

Description of drawings

Fig. 1 is a schematic diagram of a locking structure of a pod rotating shaft in an embodiment of the present invention;

Figure 2 is a schematic diagram of the rear structure of the lock shaft execution unit;

Fig. 3 is a frontal cross-sectional structural schematic diagram of the lock shaft execution unit;

Fig. 4 is a schematic diagram of the side structure of the lock shaft drive unit;

Fig. 5 is a structural schematic diagram of the locking state of the rotating shaft locking mechanism;

Fig. 6 is a schematic diagram of the structure of the drive unit when locked;

Fig. 7 is a structural schematic diagram of the unlocked state of the shaft locking mechanism;

Fig. 8 is a schematic structural diagram of the drive unit when unlocked.

reference sign

1-lock seat, 2-second locking block, 3-first locking block, 4-first locking lever, 5-torsion spring, 6-spring pressing piece, 7-elastic cylindrical pin, 8-second electromagnet, 9-Optocoupler bracket, 10-Optocoupler switch, 11-Drive mount, 12-First electromagnet, 13-Tie rod, 14-Locking screw, 15-Second locking lever, 16-Guide rail, 17-Guide rail slide piece.

Detailed ways

In order to further explain the technical means and functions adopted by the present invention to achieve the intended purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

The first embodiment of the present invention is a locking structure for a rotating shaft of a pod, referring to FIG. 1 , which includes: a shaft locking execution unit and a shaft locking driving unit.

Wherein, the shaft lock drive unit includes: a drive mount 11, a pull rod 13 installed on the drive mount 11, one end of the pull rod 13 is connected to the lock shaft execution unit, and a guide rail 16 is installed on the drive mount 11, and slides with the pull rod 13 Connection; the first electromagnet 12 and the second electromagnet 8 are arranged on the driving mount 11 , and the iron cores of the first electromagnet 12 and the second electromagnet 8 are respectively connected with the other end of the pull rod 13 .

Wherein, the first electromagnet 12 is energized and driven by the internal magnetic force, and the iron core can move along the guide rail 16 to the direction close to the lock shaft execution unit. The shaft actuator unit pops up in the direction, and drives the pull rod 13 to apply the driving force in the first direction to the shaft lock actuator unit.

The second electromagnet 8 is energized and driven by the internal magnetic force, and can move along the guide rail 16 away from the lock shaft execution unit. pops up in the second direction, and drives the pull rod 13 to apply a driving force in the second direction to the lock shaft execution unit.

Moreover, the first direction is opposite to the second direction in the plane where the tie rod 13 is located. The shaft locking execution unit locks the rotating shaft of the pod in response to the driving force in the first direction; the shaft locking executing unit responds to the driving force in the second direction and unlocks the rotating shaft of the pod.

In this embodiment, the locking shaft execution unit includes: a locking base 1, a first locking block 3 and a second locking block 2 are arranged in holes reserved in the locking base 1, and the first locking rod 4 and the second locking rod 15 correspond to The first locking rod 4 is inserted into the first locking block 3 , and the second locking rod 15 is inserted into the second locking block 2 .

Wherein, when the first locking lever 4 drives the first locking block 3 to rotate, a driving force is applied to the second locking block 2 to make the second locking block 2 rotate.

In this embodiment, the torsion spring 5 is arranged on the first locking rod 4 and connected with the pull rod 13 . When the torsion spring 5 is driven by the pull rod 13 from the first direction, the torsion spring 5 rotates counterclockwise, driving the first locking lever 4 to rotate counterclockwise, and the first locking lever 4 drives the first locking block 3 to rotate, and the first locking block 3 Drive the second locking block 2 to rotate toward the axis of the pod shaft to complete the locking of the pod shaft.

When the torsion spring 5 is driven by the pull rod 13 from the second direction, the torsion spring 5 rotates clockwise, driving the first locking lever 4 to rotate clockwise, and the first locking lever 4 drives the first locking block 3 to rotate, and the first locking block 3 Drive the second locking block 2 to rotate in a direction away from the axis of the pod shaft, so as to complete the unlocking of the pod shaft.

In this embodiment, the shaft lock drive unit further includes: an elastic cylindrical pin 7 , the iron core of the first electromagnet 12 and the iron core of the second electromagnet 8 are connected to the pull rod 13 through the elastic cylindrical pin 7 .

In this embodiment, the shaft lock drive unit further includes a guide rail slider 17, which is fixedly connected to the pull rod 13 by screws, and is used to drive the pull rod 13 to slide on the guide rail 16 along the first direction or the second direction.

In this embodiment, the shaft locking execution unit further includes: a locking screw 14 for locking the first locking block 3 to the first locking rod 4 .

In this embodiment, the shaft locking execution unit further includes: a spring pressing piece 6, which is arranged on the top of the torsion spring 5, and is fixed and locked by screws.

In this embodiment, the left arm of the torsion spring 5 is inserted into the U-shaped slot on the first locking rod 4 , and the right arm passes through the waist-shaped hole on the pull rod 13 .

In this embodiment, the shaft lock drive unit further includes: an optocoupler switch 10. When the shaft lock execution unit locks the rotating shaft of the pod, the pull rod 13 moves to the end close to the shaft lock execution unit to cut out the optocoupler switch 10; When the unit unlocks the rotating shaft of the pod, the pull rod 13 moves to the end away from the locking shaft execution unit and cuts into the optocoupler switch 10 .

In this embodiment, the shaft lock drive unit further includes: an optocoupler bracket 9 , and the optocoupler switch 10 is arranged on the driving installation seat 11 through the optocoupler bracket 9 .

The second embodiment of the present invention, this embodiment is based on the above embodiments, and an application example of the present invention is introduced in conjunction with accompanying drawings 1-8.

As shown in Figure 1, Figure 2, Figure 3, and Figure 4, the shaft locking mechanism mainly includes: a locking seat 1, a second locking block 2, a first locking block 3, a first locking lever 4, a torsion spring 5, and a spring pressing piece 6. Elastic cylindrical pin 7, second electromagnet 8, optocoupler bracket 9, optocoupler switch 10, drive mount 11, first electromagnet 12, pull rod 13, locking screw 14, second locking rod 15, guide rail 16 , Guide rail slider 17.

The first electromagnet 12 and the second electromagnet 8 are both pull-type electromagnets, and the iron core retracts when the power is forward, and has a holding force after power failure, and the iron core can pop out when the power is reversed.

Two step holes are designed on the locking base 1, and the first locking rod 4 and the second locking rod 15 are installed respectively. The first locking rod 4 passes through the locking base 1 and the first locking block 3, and the locking screw 14 is used to lock the second One locking piece 3, makes it hug the first locking lever 4, the second locking lever 15 passes through the locking seat 1 and the second locking piece 2, the second locking piece 2 and the second locking lever 15 adopt tight fit connection, the first The locking rod 4 and the second locking rod 15 can rotate freely in the locking seat 1, and when the first locking rod 4 drives the first locking block 3 to rotate, the first locking block 3 can move the second locking block 2 to rotate together.

The upper end of the first locking lever 4 is covered with a torsion spring 5, the left arm of the torsion spring 5 is embedded in the U-shaped slot on the first locking lever 4, and the right arm can pass through the waist-shaped hole on the pull rod 13, and the spring pressing piece is compressed with a screw 6 Lock the torsion spring 5 tightly.

The first electromagnet 12 and the second electromagnet 8 are respectively installed on the driving mounting base 11 through 4 countersunk screws, and the driving mounting base 11 is also equipped with a guide rail 16 and an optocoupler bracket 9, and the optocoupler bracket 9 is equipped with an optocoupler switch. 10. The pull rod 13 is connected to the iron cores of the first electromagnet 12 and the second electromagnet 8 respectively through two elastic cylindrical pins 7. The pull rod 13 is fixedly connected with the guide rail slider 17 through screws, and the pull rod is driven by the electromagnet. 13 can move linearly along the miniature guide rail 16, and the right end of the pull rod 13 is designed as an optocoupler block structure, which can cut in and out of the optocoupler switch 10 when moving.

As shown in Figure 5 and Figure 6, the rotating shaft locking mechanism is installed on the azimuth seat of the pod. When the pod receives the instruction of locking the rotating shaft, the azimuth seat first rotates around the rotating shaft to the position of the locking shaft, and then the system drives two electromagnets to act. The first When the iron core of the electromagnet 12 is retracted, the iron core of the second electromagnet 8 pops up, and the pull rod 13 connected with the electromagnet iron core pushes the torsion spring 5 to drive the first locking lever 4 to rotate counterclockwise, thereby driving the first locking block 3 and the second locking block 3. The locking block 2 rotates toward the axis of the rotating shaft, so that the protrusions on the first locking block 3 and the second locking block 2 completely enter the two grooves on the rotating shaft, and the locking of the rotating shaft of the pod is completed. At this time, the pull rod 13 cuts out the optocoupler The switch 10 feeds back the rotating shaft locking signal to the system through the optocoupler. After the power is cut off, the first electromagnet 12 has a holding force, which can keep the iron core in the retracted position, thereby stabilizing the locked state of the rotating shaft;

As shown in Figure 7 and Figure 8, when the shaft is unlocked, under the drive of the system, the iron core of the second electromagnet 8 retracts and the iron core of the first electromagnet 12 pops up, and the pull rod 13 pulls the torsion spring 5 to drive the first locking rod 4 to move forward. Clockwise rotation, thereby driving the first locking block 3 and the second locking block 2 to rotate away from the axis of the rotating shaft, so that the protrusions on the first locking block 3 and the second locking block 2 completely withdraw from the two grooves on the rotating shaft, That is, the unlocking of the pod rotating shaft is completed. At this time, the pull rod 13 cuts into the optocoupler switch 10, and the rotating shaft unlocking signal is fed back to the system. After power failure, the holding force of the second electromagnet 8 can stabilize the mechanism in the unlocked state.

Compared with the prior art, the present invention has at least the following advantages:

1) Using the power-off holding force of the electromagnet to design a double-locking block structure, the shaft locking mechanism has self-locking capability and improves the reliability of the locking function;

2) Adopting the combination of split modular design and conversion of plane linear motion into spatial rotary motion design, the flexible layout of the joint-filling structure can be carried out in the limited space, and the space utilization rate of the pod can be improved;

3) Use the optocoupler position sensor to feed back the working status of the locking mechanism in real time to avoid damage to the equipment due to misoperation and improve system security;

4) The designed lock shaft drive unit has versatility and can be flexibly used as a drive component in other forms of shaft lock mechanisms.

Through the description of the specific implementation, it should be possible to gain a deeper and more specific understanding of the technical means and effects of the present invention to achieve the intended purpose. However, the attached drawings are only for reference and description, and are not used to explain the present invention. limit.

Claims (9)

1. A nacelle spindle lock structure, comprising: a lock shaft executing unit and a lock shaft driving unit; the lock shaft driving unit includes:

driving the mounting seat;

the pull rod is arranged on the drive mounting seat, and one end of the pull rod is connected with the lock shaft executing unit;

the guide rail is arranged on the driving installation seat and is in sliding connection with the pull rod;

the first electromagnet and the second electromagnet are arranged on the driving installation seat, and iron cores of the first electromagnet and the second electromagnet are respectively connected with the other end of the pull rod;

when the iron core moves along the guide rail to a direction close to the lock shaft executing unit, the second electromagnet reversely powers the iron core to pop up along the guide rail to a direction close to the lock shaft executing unit, and drives the pull rod to apply a driving force in a first direction to the lock shaft executing unit;

when the second electromagnet is powered on and driven by internal magnetic force and moves along the guide rail in a direction away from the lock shaft executing unit, the first electromagnet reversely powers the iron core to pop up along the guide rail in a direction away from the lock shaft executing unit and drives the pull rod to apply a driving force in a second direction to the lock shaft executing unit;

the first electromagnet and the second electromagnet are retracted when being powered on in the forward direction, the iron core has a holding force after power off, the iron core can pop up when being powered on in the reverse direction, and the first direction and the second direction are opposite to each other in the direction of the plane where the pull rod is located;

the lock shaft execution unit includes: a locking seat;

the first locking block and the second locking block are arranged in a hole reserved in the locking seat;

the first locking rod and the second locking rod are correspondingly arranged in step holes respectively arranged at the left end and the right end of the top of the locking seat, and the first locking rod is inserted into the first locking block; the second locking rod is inserted into the second locking block; when the first locking rod drives the first locking block to rotate, driving force is applied to the second locking block, so that the second locking block rotates;

the torsion spring is arranged on the first locking rod and is connected with the pull rod;

the lock shaft executing unit is used for responding to the driving force in the first direction and locking the nacelle rotating shaft;

the lock shaft executing unit unlocks the pod spindle in response to the driving force in the second direction.

2. The nacelle spindle lock structure of claim 1, wherein,

when the torsion spring is driven by the pull rod from the first direction, the torsion spring rotates anticlockwise to drive the first locking rod to rotate anticlockwise, the first locking rod drives the first locking block to rotate, and the first locking block drives the second locking block to rotate towards the axis of the nacelle rotating shaft so as to complete locking of the nacelle rotating shaft;

when the torsion spring receives the driving force of the pull rod from the second direction, the torsion spring rotates clockwise to drive the first locking rod to rotate clockwise, the first locking rod drives the first locking block to rotate, and the first locking block drives the second locking block to rotate in the direction away from the axis of the nacelle rotating shaft so as to unlock the nacelle rotating shaft.

3. The pod spindle locking structure of claim 1, wherein the lock spindle driving unit further comprises:

the elastic cylindrical pin, the iron core of the first electromagnet and the iron core of the second electromagnet are connected with the pull rod through the elastic cylindrical pin.

4. The pod spindle locking structure of claim 1, wherein the lock spindle driving unit further comprises:

the guide rail sliding block is fixedly connected with the pull rod through a screw and is used for driving the pull rod to slide on the guide rail along the first direction or the second direction.

5. The pod spindle locking structure of claim 1, wherein the lock spindle performing unit further comprises:

and the locking screw locks the first locking block to the first locking rod.

6. The pod spindle locking structure of claim 1, wherein the lock spindle performing unit further comprises:

and the spring pressing sheet is arranged at the top of the torsion spring and is fixed and locked by a screw.

7. The nacelle spindle lock structure of claim 1, wherein,

the left arm of the torsion spring is embedded into the U-shaped clamping groove on the first locking rod, and the right arm of the torsion spring penetrates through the waist-shaped hole on the pull rod.

8. The pod spindle locking structure of claim 1, wherein the lock spindle driving unit further comprises:

when the lock shaft executing unit locks the nacelle rotating shaft, one end of the pull rod, which is close to the lock shaft executing unit, cuts out the optical coupling switch;

when the lock shaft executing unit unlocks the nacelle rotating shaft, one end of the pull rod, which is far away from the lock shaft executing unit, cuts into the optical coupler switch.

9. The pod spindle locking structure of claim 8, wherein the lock spindle drive unit further comprises:

and the optocoupler switch is arranged on the driving installation seat through the optocoupler bracket.