JPH11294420A - Mounting structure of auxiliary machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and rapidly mount and demount an auxiliary machine on and from, for example, an engine for an aircraft. SOLUTION: An auxiliary machine 20 is provided with a protrusion part 23 formed on the outside surface of a mounting part 21; and a through-hole 24 formed in the protrusion part 23 and locked on the gear device 10 side. The gear device 10 comprises a notch part 14 in which the protrusion part 23 is introduced in a process to insert the mounting part 21 in an opening part 12; a groove 15 in which the protrusion part 23 is introduced when the auxiliary machine 20 is rotated around a central axis L after the mounting part 21 is inserted in the opening part 12; a fixing pin locking the protrusion part 23 in a state to be retractably supported in the through-hole 24 in a position that the auxiliary machine 20 is rotated around a central axis L in a given angle arc; and a pin extricating rod 25 to cause the fixing pin to extricate from the through-hole 24 to release from a lock state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for detachably mounting an auxiliary machine or the like to an aircraft engine, for example.

[0002]

2. Description of the Related Art An aircraft engine is equipped with various accessories necessary for driving the engine, such as a lubricating oil pump and a fuel pump. These accessories are mounted on the respective pad surfaces of the gear device for driving the accessories.

As a conventional accessory mounting structure, a bolt / insert connection, a stud / nut connection, a Merman clamp connection, and the like are general. When installing accessories,
The auxiliary machine is joined to the pad surface such that the input shaft of the auxiliary machine is engaged with the output shaft of the gear device, and the mounting operation by the above-described respective coupling structures is performed.

[0004]

SUMMARY OF THE INVENTION A conventional accessory mounting structure, such as a bolt / insert connection, a stud / nut connection,
In the case of a Merman clamp connection or the like, when attaching or detaching the joint, it is necessary to use a tool such as a wrench since fastening with a bolt or a nut is required, which causes a prolonged working time.

[0005] The present invention has been made in view of the above circumstances, and has as its object to provide a mounting structure that allows easy attachment and detachment of accessories to and from an aircraft engine in a short time.

[0006]

As means for solving the above-mentioned problems, the following mounting structure is employed. In other words, the accessory mounting structure according to the first aspect is an accessory mounting structure for detachably attaching an accessory having an attachment portion to an attachment object having an opening through which the attachment portion can be inserted. The auxiliary device includes a protrusion provided on an outer surface of the mounting portion, and a locking portion formed on the protrusion and locked to the mounting object side. The notch into which the projection is introduced in the process of inserting the mounting portion into the opening, and rotating the accessory around a central axis parallel to the insertion direction after inserting the mounting portion into the opening. A groove into which the protrusion is introduced, and a position where the auxiliary device is rotated by a predetermined angle around the central axis so as to protrude and retract with respect to the locking portion to lock the protrusion. A fixing pin is released from the locking portion to release the locking state. It is characterized in that the unlocking means are provided for.

In the mounting structure of the first aspect, when the mounting portion of the accessory is inserted into the opening of the mounting object and rotated about a central axis parallel to the insertion direction, the projection is introduced into the groove, and The auxiliary pin is fixed to the object to be mounted by the fixing pin protruding from the locking portion and being locked by the projection at the position rotated by the angle of. When removing the accessory from the object to be mounted, operate the unlocking means to release the fixing pin from the locking part to release the locked state, and then rotate the accessory in the opposite direction to when attaching it. Then, by pulling out the mounting portion from the opening, the accessory is removed from the mounting target.

According to a second aspect of the present invention, there is provided a mounting structure for an auxiliary machine, wherein the locking release means is formed by exposing a tip of the fixing pin to the object to be mounted and formed along a direction in which the groove is provided. A hole is provided in the auxiliary device, and a through hole formed in the projection as the locking portion, and the auxiliary device is supported so as to be capable of being inserted into and withdrawn from the through hole in a direction in which the fixing pin is retracted. A pin detachment rod that is inserted into the through hole through the elongated hole while the machine is attached to the attachment target and pushes down the fixing pin to detach the fixing pin from the through hole. Is what you do.

In the mounting structure according to the second aspect, when the pin releasing rod is inserted into the through hole through the elongated hole from the state where the auxiliary machine is fixed to the mounting object, the tip of the pin releasing rod pushes down the fixing pin. Thus, the fixing pin is removed from the through hole. If you rotate the accessory in the opposite direction to the direction in which it was installed, the pin release rod and the protrusion will move along the long hole, but the fixing pin will remain at the original position and the pin will be removed. Even if the rod is pulled out from the through hole, the engagement state with the through hole is released. Thereafter, the accessory is further rotated, and the attachment is finally pulled out from the opening, so that the accessory is removed from the object to be attached.

According to a third aspect of the present invention, there is provided the auxiliary device mounting structure, wherein the lock release means includes a shaft portion supported by the mounting object so as to be able to be inserted and withdrawn in parallel with a direction in which the fixing pin is retracted. A pin detachment portion having a pin regulating portion provided at the tip of the shaft portion to lock the flange portion provided at the base end of the fixing pin to restrict the protrusion of the fixing pin and to support the fixing pin so as to be movable in the retracting direction. A rod is provided.

[0013] In the accessory mounting structure according to the third aspect, when the pin removal rod is inserted into the object to be mounted from the state in which the auxiliary device is fixed to the object to be mounted, the pin regulating portion pushes down the fixing pin. The fixing pin is removed from the through hole. If the auxiliary machine is rotated in the opposite direction to the mounting direction while maintaining this state, the fixing pin and the through hole are displaced in the rotation direction, and the engaged state is released even when the pin releasing rod is opened. Thereafter, the accessory is further rotated, and the attachment is finally pulled out from the opening, so that the accessory is removed from the object to be attached.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an accessory mounting structure according to the present invention will be described with reference to FIGS. FIG. 1 shows a part of an auxiliary drive gear unit provided in an aircraft engine and auxiliary equipment such as a lubricating oil pump and a fuel pump. The gear device 10 is provided with a circular pad surface 11 on which the accessory 20 is mounted, and an opening 12 into which a mounting portion 21 of the accessory 20 is inserted is provided at the center of the pad surface 11. An output shaft 13 of the gear device 10 connected to the input shaft 22 on the accessory device 20 side is provided inside the opening 12. The tip of the input shaft 22 is splined, and the power of the gear device 10 is transmitted to the accessory 20 by engaging the tip with the output shaft 13.

The auxiliary device 20 is provided with a projection 23 on the outer surface of the mounting portion 21. The protrusions 23 are provided in a pair at a distance from each other in the diametric direction of the substantially cylindrical auxiliary device 20. The protrusion 23 is provided with a through hole 24 as a locking portion that is locked to the gear device 10 side, in a direction parallel to the center axis L of the accessory 20, that is, in the direction in which the accessory 20 is inserted into the pad surface 11. .

On the gear device 10 side, the notch 1 into which the projection 23 is introduced in the process of inserting the mounting portion 21 into the opening 12.
4 are provided in a pair at a distance from each other in the diameter direction of the opening 12. On the inner peripheral surface of the opening 12, the mounting portion 21 is attached to the opening 1.
2, a groove 15 is provided in which the projection 23 is introduced when the auxiliary device 20 is rotated around the central axis L of the accessory 20.

As shown in FIG. 2, the gear device 10 is provided with a fixing pin 16 for locking the projection 23 at a position where the accessory 20 is rotated by a predetermined angle around the central axis L. I have. The fixing pin 16 is disposed in a space 10 a formed in a frame forming the gear device 10 and is urged in a protruding direction by a spring 17. A flange 16 a is formed at a base end of the fixing pin 16, This flange portion 16a
Is fixed by a stopper 18 provided in the space 10a, so that the fixing pin 16 is supported so as to be able to protrude and retract from the through hole 24. In addition, the accessory 2
A tapered surface 16b is formed which abuts on the side of the projection 23 and moves the fixing pin 16 downward in the process in which the rotation of the pin 0 and the projection 23 reaches a predetermined position.

The gear device 10 further includes a fixing pin 16
Is released from the through hole 24 to release the locked state by releasing the fixed pin 16 from the pad surface 11, and a long hole 19 formed along the direction in which the groove 15 is provided. Is provided. In addition, auxiliary equipment 20 includes auxiliary equipment 2
A pin detachment rod 25 is provided to detach the fixing pin 16 from the through-hole 24 by inserting the fixing pin 16 from the through-hole 24 by inserting the fixing pin 16 into the through-hole 24 through the elongated hole 19 in a state where 0 is attached to the gear device 10. The pin detachment rod 25 is attached to a bulging portion 26 provided on the auxiliary device 20 side corresponding to the projection 23,
The distal end is supported so as to be able to be inserted into and removed from the through hole 24 in the direction in which the fixing pin 16 is retracted, and is urged by a spring 27 in a direction away from the fixing pin 16. In addition, the base end of the pin removing rod 25 is exposed from the bulging portion 26,
By pushing down the base end in the axial direction, the front end is brought into contact with the fixing pin 16.

With respect to the mounting structure of the accessory 20 configured as described above, a procedure for attaching the accessory 20 to the gear device and a procedure for removing the accessory 20 will be described. First, when attaching the accessory 20 to the gear device, a pair of projections 2
3 correspond to the notches 14, respectively, and then the mounting portion 21 of the accessory 20 is opened along the direction indicated by the arrow in the figure.
Insert into 2. After the accessory 20 is inserted into the opening 12 to a predetermined position, the accessory 20 is rotated about the central axis L in the direction indicated by the arrow in the figure. When the accessory 20 is rotated, the protrusion 23 is introduced into the groove 15, whereby the detachment of the accessory 20 in the direction of the central axis L is regulated. When the rotation of the auxiliary device 20 is continued, the side portion of the projection 23 comes into contact with the tapered surface 16 b formed on the fixing pin 16, and the fixing pin 16 is pushed down against the urging force of the spring 17. When the rotation of the accessory 20 is further continued, the fixing pin 16 is fitted into the through hole 24 at a predetermined position, and the projection 23 is locked. As a result, detachment of the accessory 20 along the groove 15 is restricted, and as a result, the accessory 20 is fixed to the gear device 10.

Subsequently, when the accessory 20 is to be removed from the gear device 10, the pin release rod 25 is pushed down toward the gear device 10 against the urging force of the spring 27 and inserted into the through hole 24 through the elongated hole 19. When the tip pushes down the fixing pin 16, the fixing pin 16 is removed from the through hole 24.
When the auxiliary device 20 is rotated in the opposite direction to the mounting direction while maintaining this state, the pin detachment rod 25 and the projection 2
3 moves along the long hole 19, but the fixing pin 16 remains at the original position, and the engagement state with the through hole 24 is released even if the pin releasing rod 25 is opened and pulled out from the through hole 24. Is done. Thereafter, the accessory 20 is further rotated, and the attachment 21 is finally pulled out of the opening 12 so that the accessory 20 is removed from the gear device 10.

If the auxiliary device 20 mounting structure having the above-described structure is adopted, the auxiliary device 20 can be mounted when the auxiliary device 20 is mounted.
Can be attached to the gear device 10 by rotating it in a predetermined direction after being inserted into the opening portion 12, and when detaching, the pin 20 is pushed down and the accessory
Can be removed from the gear device 10 by rotating. Therefore, since the accessory 20 can be attached to and detached from the gear device 10 without using a tool such as a wrench as in the related art, the working time can be reduced and the workability can be improved.

Next, a second embodiment of the mounting structure of the auxiliary device 20 according to the present invention will be described with reference to FIG. Note that components already described in the first embodiment are given the same reference numerals and description thereof is omitted. As the unlocking means, the gear device shown in FIG. 3 is provided with a pin releasing rod 30 for releasing the fixing pin 16 from the through hole 24 by pressing the fixing pin 16 down against the urging force of the spring. The pin detachment rod 30 has a shaft portion 31 that is built in the body adjacent to the fixing pin 16 and is movably supported in parallel with the direction in which the fixing pin 16 projects. A pin control portion 32 is provided at the tip of the shaft portion 31 disposed inside the frame to lock the flange portion 16a provided on the fixing pin 16 and restrict the protrusion of the fixing pin 16. The other end of the shaft portion 31 is exposed from the frame, and the other end of the shaft portion 31 is pushed into the frame to push down the fixing pin 16 locked by the pin regulating portion 32.

With respect to the mounting structure of the accessory 20 configured as described above, a procedure for removing the accessory 20 from the gear device will be described. First, when the pin removing rod 30 is pressed down against the urging force of the spring 27, the pin regulating unit 32 pushes down the fixing pin 16, and the fixing pin 16 is removed from the through hole 24. When the auxiliary device 20 is rotated in the opposite direction to the mounting direction while maintaining this state, the fixing pin 16 and the through hole 24 are displaced in the rotational direction, and the pin dismounting rod 30 is rotated.
Is released, the engagement state is released. After that, auxiliary machine 20
Is further rotated, and finally the attachment 20 is removed from the gear device 10 by pulling out the mounting portion 21 from the opening 12.

If the auxiliary device 20 mounting structure having the above-described structure is adopted, the auxiliary device 20 can be mounted when the auxiliary device 20 is mounted.
Can be attached to the gear device 10 by rotating it in a predetermined direction after being inserted into the opening portion 12. When detaching, the auxiliary device 20 is pressed down with the pin releasing rod 30 pressed down.
Can be removed from the gear device 10 by rotating. Therefore, since the accessory 20 can be attached to and detached from the gear device 10 without using a tool such as a wrench as in the related art, the working time can be reduced and the workability can be improved.

[0023]

As described above, according to the accessory mounting structure of the present invention, the accessory can be attached to and detached from the gear device without using a tool such as a wrench as in the prior art. Therefore, the working time can be reduced and the workability can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of an accessory mounting structure according to the present invention.

FIG. 2 is a sectional view of a main part of an unlocking means in FIG. 1;

FIG. 3 is a view showing a second embodiment of the attachment structure of the auxiliary device according to the present invention, and is a cross-sectional view of a main part of an unlocking means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Gear device 11 Pad surface 12 Opening 14 Notch 15 Groove 16 Fixing pin 19 Long hole 20 Auxiliary equipment 21 Mounting part 23 Projection part 24 Through hole 25 Pin release rod

Claims (3)

[Claims] 1. A mounting structure of an auxiliary machine for detachably mounting an auxiliary machine having a mounting section to an object to be mounted having an opening into which the mounting section can be inserted. A protrusion provided on an outer surface of the portion, and a locking portion formed on the protrusion and locked to the mounting object side, wherein the mounting object is provided with the mounting portion at the opening. A notch into which the protrusion is introduced during the insertion process, and a groove into which the protrusion is introduced when the accessory is rotated around a central axis parallel to the insertion direction after the attachment is inserted into the opening. A fixing pin that is supported so as to be able to protrude and retract with respect to the locking portion at a position where the accessory is rotated by a predetermined angle around the central axis to lock the projection, and that the locking pin is locked. Lock release means for releasing from the part to release the locked state. Mounting structure for auxiliary machinery, characterized in that. 2. An elongated hole which is formed along the direction in which the groove is provided and which exposes a tip of the fixing pin is provided in the object to be attached as the unlocking means. A through-hole formed in the protrusion as the locking portion, and supported so as to be able to be inserted into and removed from the through-hole in a direction in which the fixing pin is protruded and retracted, and the auxiliary device is attached to the attachment object. The mounting structure according to claim 1, further comprising a pin releasing rod that is inserted into the through hole through the elongated hole in a state and pushes down the fixing pin to release the fixing pin from the through hole. 3. A shaft part supported as said locking release means so as to be able to be inserted and withdrawn from said object to be mounted in parallel with a direction in which said fixing pin is retracted, and a fixing pin provided at one end of said shaft part. A pin releasing rod having a pin restricting portion that locks a flange portion provided at a base end of the fixing pin and restricts protrusion of the fixing pin and supports the fixing pin so as to be movable in a retracting direction. Item 7. The mounting structure according to Item 1.