JP2006192989A - Aircraft transfer apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aircraft transfer apparatus, transferring an aircraft while suitably retaining wheels without applying stress to the tires of the wheels of the aircraft in transferring the aircraft. <P>SOLUTION: This aircraft transfer apparatus transfers the aircraft by moving it while the wheels of the aircraft are retained. The apparatus includes: an engagement part 11 engaged with the foils of the wheels 1 of the aircraft; a holding part 13 holding the engagement part 11; a self-running car body 2 to which the holding part 13 is attached; a draw cylinder 14 for drawing the holding part with the car body inside the car body; and a lift cylinder 15 lifting the drawn holding part with the car body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an aircraft transfer device that transfers an aircraft while holding the wheels of the fuselage on an aircraft taxiway, in a hangar, on the deck of an aircraft-mounted ship, and the like.

2. Description of the Related Art Conventionally, an aircraft transfer device is used to transfer an aircraft such as an airplane or a helicopter on the ground.
FIG. 10 is a plan view showing a conventional aircraft transfer apparatus. As shown in FIG. 10, the aircraft transfer device 40 includes a clamp / lift mechanism 42 such as a cylinder 42a for tightening a front wheel 1 of an aircraft with a clamp pad 41, a cylinder 42b for lifting the front wheel 1, and a battery for self-propelling. And a self-propelled motor 43 and a drive wheel 44. When the self-propelled motor 43 is rotated by the battery in a state where the aircraft wheel 1 is lifted by the clamp / lift mechanism 42, torque is transmitted from the self-propelled motor 43 to the drive wheel 44, and the aircraft transfer device 40 is moved together with the aircraft. Run. Thereby, after moving the aircraft to a desired position, the tightening of the wheel 1 by the clamp pad 41 is released, and the wheel 1 is lowered to the ground to complete the movement.

  The height of the aircraft transfer device 40 is about the height of the wheel 1 of the aircraft, and the width thereof is about the same as or less than the width of the aircraft, so that it is particularly suitable for moving the aircraft in a limited space. It is beneficial.

Examples of such an aircraft transfer device are described in Patent Documents 1 and 2.
Japanese Patent Application Laid-Open No. 2004-34896 “Airplane Restraint Cart and Airplane Restraint Transfer Device” Japanese Patent Application Laid-Open No. 2004-34897 “Airplane self-propelled transfer vehicle and airplane restraint transfer device”

  In the conventional aircraft transfer device 40, the clamp pad 41 having a shape matching the shape of the tire of the aircraft is lifted by sandwiching both sides of the tire, and the aircraft is transported while the tire is sandwiched between the clamp pads 41. There was no problem when the tire air pressure was larger than the clamping pressure of the clamp pad 41. However, when the tire air pressure was smaller than the clamping pressure of the clamp pad 41, the edge of the clamp pad 41 was pressed. The tire is deformed at a portion along the circumferential direction of the tire or a local portion on the side surface of the tire. In this case, the tire deformed state is maintained during the transfer, so that the tire may be permanently deformed and the tire may be deteriorated.

  It is an object of the present invention to provide an aircraft transfer device that can transfer an aircraft while appropriately holding the wheels without applying stress to the tires of the wheels of the aircraft when transferring the aircraft.

Means for Solving the Problems and Effects of the Invention

  According to the present invention, there is provided an aircraft transfer device for transferring an aircraft by moving while holding the wheels of the aircraft, including an engaging portion that engages with the wheels of the aircraft, and holding means for holding the wheels. And a lift means for lifting the holding means for holding the wheels together with the wheels, and a vehicle body to which the holding means and the lift means are attached and capable of self-propelling (Claim 1). .

  Thereby, since it engages with a wheel using the wheel of a wheel, a wheel can be held appropriately, without giving stress to a tire. Therefore, the problem that the tire is deformed by the transfer of the aircraft is solved.

  Preferably, the engaging portion is inserted into a hole formed in a central portion of the wheel.

  Accordingly, when the wheel is pulled into the vehicle body, it is possible to pull the wheel while rotating the wheel of the aircraft, and the handling of the wheel becomes easy.

  Preferably, the engaging portion includes a pair of insertion portions that are respectively inserted into wheel holes on both sides of the wheel, and a support member that supports the pair of insertion portions so as to be movable in the wheel width direction. The engaging portion is attached to the wheel by moving the pair of insertion portions supported by the support member in the wheel width direction and inserting the pair of insertion portions into the wheel holes from both sides of the wheel.

  Thereby, even if the width of the wheel differs depending on the type of aircraft, the insertion portion provided in the engagement portion can move in the wheel width direction, so that the engagement portion is appropriately engaged with the wheel of the wheel. Can do. That is, the position adjustment function in the wheel width direction can cope with a plurality of types of wheels having different widths.

  According to a preferred embodiment of the present invention, the insertion portion has an insertion pin with a male screw cut, and the support member is located at a position facing the wheel hole of the wheel when the engagement portion is attached to the wheel. A screw hole is formed in the screw hole, and a female screw into which the male screw of the insertion pin is screwed is cut into the screw hole.

  According to another embodiment of the present invention, the support member includes a first engagement member that supports one insertion portion and has an insertion hole formed in a direction corresponding to the wheel width direction, and the other difference. Both sides are inserted into the second engagement member that supports the insertion portion and has an insertion hole formed in a direction corresponding to the wheel width direction, the insertion hole of the first engagement member, and the insertion hole of the second engagement member And adjusting the distance between the first engagement member and the second engagement member by rotating the position adjustment bolt clockwise or counterclockwise. The insertion holes of the first engagement member and the insertion hole of the second engagement member are respectively threaded with a female thread in a predetermined direction, and the position adjusting bolt is threaded with a male thread in a predetermined direction ( Claim 5).

  Preferably, the engaging portion is separated from the vehicle body, and the holding means further includes a holding portion that holds the engaging portion attached to the wheel from both sides, and the holding portion is attached to the vehicle body. (Claim 6).

  Thereby, since the engaging part is isolate | separated from the vehicle body, the handling becomes convenient.

  According to the embodiment of the present invention, the sandwiching portion includes a pair of arm members that sandwich the engaging portion engaged with a wheel, and the pair of arm members that move in the wheel width direction to engage the arm member. And an arm member driving portion that holds the engaging portion of the arm member, and a portion that holds the engaging portion of the arm member is formed with a vertically long hole. When the engaging portion is held by the arm member, the vertically long hole is formed in the engaging portion. The protrusion to be inserted is formed in the wheel width direction (claim 7).

  The height of this protrusion corresponds to the height of the wheel. That is, when the heights of the wheels are different, the heights of the projecting portions are also different, but the holes formed in the arm member are elongated in order to cope with the difference in height. Therefore, even if the heights of the projecting portions are different, the projecting portions can be inserted into different positions in the vertically long hole, and the engaging portion and the arm member can be appropriately combined.

  According to the present invention, there is also provided a wheel holding device for holding a wheel of an aircraft, the engaging portion engaging with the wheel portion so as not to apply a pressing force to the tire portion of the wheel, and the engaging portion on both sides. There is provided a wheel holding device characterized in that it has a pinching portion for pinching from above (claim 8).

  When this wheel holding device is used to hold the wheel for transporting the aircraft, the wheel is engaged with the wheel to hold the wheel, so that the tire is deformed without applying stress to the wheel tire. Can solve the problem.

  A preferred embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

  FIG. 1 is a plan view of an aircraft transfer device according to an embodiment of the present invention. The aircraft transfer device 10 is roughly formed by connecting a wheel holding device 4 to a vehicle body 2. In FIG. 1, the positive direction of the y-axis is the front side of the aircraft and is also the front side of the aircraft transfer device 10. 2 is a plan view showing a state in which the front wheel 1 of the aircraft is drawn into the aircraft transfer device 10 as will be described later.

  First, the vehicle body 2 of the aircraft transfer apparatus 10 will be described. As shown in FIG. 1, a pair of extending portions 5 are provided in the front portion of the vehicle body 2. Each extending portion 5 incorporates a drive wheel 7 and a self-propelled motor 8, and the output of the self-propelled motor 8 is transmitted to the drive wheel 7 through a torque transmission shaft to cause the vehicle body 2 to travel. When the traveling direction of the vehicle body 2 is changed, the self-propelled motor 8 is controlled so that the rotation speeds of the pair of drive wheels 7 are different. The self-propelled motor 8 may be driven by a battery built in the vehicle body 2, but the present invention is not limited to this.

  A pair of auxiliary wheels 9 are provided at the center of the rear side of the vehicle body 2. The auxiliary wheel 9 rotates freely around a horizontal wheel axis as the drive wheel 7 travels, and can rotate freely around a vertical turning axis as the traveling direction of the vehicle body 2 changes. It is configured as follows.

  Next, the wheel holding device 4 of the aircraft transfer device 10 will be described.

  The wheel holding device 4 is provided between the pair of extending portions 5 of the vehicle body 2. The wheel holding device 4 includes an engaging portion 11 that engages with a wheel hole of the wheel 1 that is the front wheel 1 of the aircraft, and a holding portion 13 that holds the engaging portion 11 engaged with the wheel 1 of the aircraft from both sides. , A pull-in cylinder 14 that pulls the clamping part 13 into the vehicle body and a lift cylinder 15 that lifts the pulled wheel 1 from the ground. That is, the wheel holding device 4 is a device for holding the aircraft wheel 1 and pulling it into the vehicle body 2 and lifting it from the ground. In this way, the vehicle body 2 is self-propelled in a state where the aircraft wheel 1 is lifted, so that the aircraft can be transferred. In addition, you may transfer by engaging with a rear wheel etc. instead of the front wheel 1 of an aircraft.

  Each part of the wheel holding device 4 will be described in detail.

  FIG. 3 is a plan sectional view for illustrating the configuration of the engaging portion 11. As shown in FIG. 3, the engaging portion 11 includes a pair of insertion pins 18 with male threads inserted into a wheel hole formed in the center of the wheel 1 of the aircraft, and these insertion pins 18. The support member 20 is supported so as to be movable in the width direction of the wheel 1. The support member 20 has a U-shape in plan view, and screw holes are formed in both end portions 20a and 20b. The screw holes penetrate the width direction of the wheel 1 in FIG. The insertion pin 18 is screwed into the screw hole of the support member 20 by the female screw of the screw hole and the male screw of the insertion pin 18, and the insertion pin 18 is rotated by rotating the insertion pin 18 around its axis. Is movable in the width direction of the wheel 1. As a result, the position of the insertion pin 18 can be adjusted.

  A procedure for engaging the engaging portion 11 having the above-described configuration with the wheel 1 will be described.

  When this engaging portion 11 is engaged with the wheel 1, as shown in FIG. 3, the both ends 20 a and 20 b of the support member 20 are disposed so as to sandwich the wheel 1, and the insertion pins 18 are respectively connected to the support member 20. The insertion pin 18 is rotated by being screwed into the screw holes formed in the both end portions 20a and 20b. Thereby, the front end side of each insertion pin 18 is inserted in the wheel hole formed in the center part of the wheel of the wheel 1. In this way, the pair of insertion pins 18 are inserted into the wheel holes from both sides of the wheel 1, and the engaging portion 11 is engaged with the wheel 1. This engaged state is reliably maintained unless the insertion pin 18 is turned to move the insertion pin 18 to the outside in the width direction of the wheel 1.

  According to the embodiment of the present invention, the length L (see FIG. 3) of the support member 20 is set so as to correspond to the widths of the different wheels 1. That is, if the length L of the support member 20 is set so that the wheels 1 having different widths enter between the both ends 20a and 20b of the support member 20, the insertion pin 18 is simply turned in the width direction of the wheel 1. By adjusting the position, the insertion pin 18 can be inserted into the wheel hole of a wheel having a different width, and the engaging portion 11 can be appropriately engaged with the wheel 1. Further, a plurality of insertion pins 18 having different lengths may be prepared in order to engage with the wheels 1 having different widths.

  As described above, according to the embodiment of the present invention, by adjusting the position of the insertion pin 18 and / or preparing a plurality of insertion pins 18 having different lengths, the width of the wheel 1 can be reduced. Even if it differs depending on the type, there is no inconvenience in engaging the engaging portion 11 with the wheel 1.

  In addition, although the above demonstrated the case where the insertion pin 18 was inserted in the wheel hole formed in the center part of the wheel of the wheel 1, this invention is not limited to this, It is made to engage with the wheel of the wheel 1, and Other suitable means that can adjust the position in the width direction of the wheel 1 can be used. For example, you may make it insert insertion parts, such as an insertion pin, in the wheel hole formed around the center part of the wheel of the wheel 1. FIG.

  Also, as shown in FIG. 4, engagement members 21 and 22 are prepared which are inserted into the entire wheel recess of the wheel 1 and engage with the wheel 1, and are inserted into the wheel recess of the wheel 1 to be engaged. It can also be made. In this case, for example, as shown in FIG. 4, the pair of engaging members 21 and 22 are coupled by the position adjusting bolt 23. In the example of FIG. 4, insertion holes with female threads are formed in both engagement members 21, 22, and both sides of the position adjusting bolt 23 with male threads are formed on the engagement members 21, 22, respectively. The distance between the pair of support members 20 can be adjusted by screwing into the insertion hole 22 and rotating the rotation operation unit 24 to rotate the position adjusting bolt 23. That is, for example, when the position adjusting bolt 23 is rotated clockwise, the position adjusting bolt 23 advances to the inside of either insertion hole, and when it is turned counterclockwise, the position adjusting bolt 23 advances in a direction coming out of either insertion hole. The direction of the female screw of both insertion holes and the direction of the male screw of the position adjusting bolt 23 are set in advance. In FIG. 4, a portion of the engagement members 21 and 22 that is inserted into the entire depression of the wheel 1 corresponds to the insertion portion. The engaging members 21 and 22 correspond to the support member 20 described above.

  Further, according to the embodiment of the present invention, since the engaging portion 11 is separated from the vehicle body 2, the handling is convenient.

  Next, the clamping part 13 which clamps the engaging part 11 engaged with the wheel 1 of the aircraft will be described.

  FIG. 5 is an enlarged view of the wheel holding device 4 of FIG. As shown in FIG. 5, the clamping unit 13 includes a pair of arm members 26 for clamping the engaging unit 11, an arm member drive cylinder 27 for driving the arm member 26, and each arm member 26. And a fixing member 29 for fixing the vicinity of the center portion with a pin 28 in a rotatable manner. The driving end portions of the respective arm members 26 are coupled by arm member driving cylinders 27. As a result, the arm member drive cylinder 27 is expanded and contracted by, for example, a hydraulic device, and each arm member 26 is rotated around the fixed portion by the pin 28. On the other hand, as shown in the side view of FIG. 6, a through hole 30 is formed in the sandwiching end portion of the arm member 26. The arm member drive cylinder 27 constitutes an arm member drive unit, but other appropriate members may constitute the arm member drive unit.

  When the arm member drive cylinder 27 is extended due to the configuration of the clamping portion 13 described above, the pair of arm members 26 are engaged with the pins 28 from the position indicated by the broken line in FIG. 5 to the position indicated by the solid line in FIG. It rotates toward both end portions 20a and 20b of the joint portion 11. By this rotation, the head side of the insertion pin 18 (in the example of FIG. 4, the protruding portion 31) is inserted into the through hole 30 at the holding end portion of each arm member 26. Thereby, the engaging portion 11 and the sandwiching portion 13 are coupled in the y direction in FIG. 1, and the engaging portion 11 is sandwiched by the sandwiching portion 13. On the other hand, when the arm member driving cylinder 27 is contracted from this state and the pair of arm members 26 are rotated to the position of the arm member 26 shown by the broken line in FIG. 5, the holding of the engaging portion 11 by the holding portion 13 is released. become. According to the present invention, the hole formed in the sandwiching end portion of the arm member 26 is not limited to the through hole 30, and instead, a recess into which the insertion pin 18 or the protruding portion 31 is inserted may be formed. . In addition, the head side of the insertion pin 18 in FIG.

  According to the embodiment of the present invention, the through hole 30 or the recess of the sandwiching end portion of each arm member 26 is formed in a vertically long shape. Thereby, even if the height of the wheel 1 of an aircraft differs, the wheel 1 can be clamped corresponding to those wheels 1. That is, in the state in which the wheel 1 is engaged with the engaging portion 11, the head side of the insertion pin 18 protrudes from the engaging portion 11 in the example of FIG. 3, and the protruding portion 31 in the example of FIG. Although it protrudes and the height of the insertion pin 18 or the protrusion part 31 will also differ according to the height of the wheel 1, if the through-hole 30 or the recessed part is vertically long, the height of the insertion pin 18 or the protrusion part 31 is Even if they are different from each other, the head side of the insertion pin 18 or the protruding portion 31 can be inserted into the through-hole 30 or the recessed portion so as to be in a coupled clamping state.

  In the above description, the pair of arm members 26 are driven to rotate, but they may be translated in the horizontal direction. For example, a guide rail is provided in the width direction of the wheel 1 so that the pair of arm members 26 move horizontally, and the pair of arm members 26 is moved along the guide rails by expansion and contraction of the cylinder similar to the arm member drive cylinder 27. The engaging portion 11 may be clamped by being translated in the width direction of the wheel 1.

  In addition, although the engaging part 11 and the clamping part 13 comprise a holding means, you may comprise a holding means with the other suitable thing which performs the same function as the engaging part 11 and the clamping part 13 mentioned above.

  Thus, if the wheel 1 is clamped by the clamping unit 13 sandwiching the engaging part 11, the wheel 1 is pulled in the vehicle body 2 toward the inside of the vehicle body 2.

  As shown in FIG. 1, one end portion of the retracting cylinder 14 is fixed to a fixing member 29 of the sandwiching portion 13 extending in the width direction of the wheel 1, and the other end portion of the retracting cylinder 14 is fixed to the vehicle body 2. The 6 and 7 are side views showing the retracting operation of the retracting cylinder 14.

  By retracting the retracting cylinder 14 from the state of FIG. 1 or FIG. 6, the fixing member 29 of the sandwiching portion 13 is guided by the retracting guide 34 (see FIG. 1), and the wheel 1 is moved together with the engaging portion 11 and the sandwiching portion 13. Or it pulls in from the position of FIG. 6 to the position of FIG. 2 or FIG. By this pull-in operation, the wheel 1 is placed on the lift table 35 that is at the same height as the lower surface of the wheel 1. By this pull-in operation, the aircraft side may move and the wheel 1 may be placed on the lift table 35, or the vehicle body 2 of the aircraft transfer device 10 may move and the wheel 1 may be placed on the lift table 35.

  Next, the lift cylinder 15 that lifts the lift table 35 on which the wheels 1 are placed will be described.

  As shown in FIG. 1, the pair of lift cylinders 15 are respectively provided in the extending portions 5 of the vehicle body 2. FIG. 8 is an AA arrow view of FIG. As shown in FIG. 8, by extending the lift cylinder 15, the rotation member 36 a formed integrally with the rotation shaft 36 rotates to the position indicated by the broken line in the direction of the arrow. 9 and the fixing member 29 (see FIG. 5), the lift table 35 on which the wheel 1 is mounted is integrated with the engaging portion 11 and the clamping portion 13 as shown in FIG. Rotated and lifted.

  Thus, the engaging part 11, the clamping part 13, and the wheel 1 are integrally rotated from the position of FIG. 7 to the position of FIG. One end of the retracting cylinder 14 is attached to the fixing member 29 of the sandwiching portion 13, and the attachment location is the central axis of the integral rotation of the lift base 35, the sandwiching portion 13 and the wheel 1 by the lift cylinder 15. 36, and one end of the drawing cylinder 14 is rotatable around a central axis 36 for integral rotation of the lift table 35, the clamping unit 13 and the wheel 1. As a result, the rotation and lifting operations by the lift cylinder 15 are not hindered. Although the lift cylinder 15 constitutes a lift means, the lift cylinder 15 may be configured to perform the same function as the lift cylinder 15.

  Thus, when the aircraft wheel 1 is placed on the lift platform 35 and lifted from the ground, the vehicle body 2 can be moved by the self-propelling function of the vehicle body 2 described above to move the aircraft to a desired position.

  In addition, operation of the aircraft transfer apparatus 10 and operation of the arm member drive cylinder 27, the retracting cylinder 14, and the lift cylinder 15 can be performed by an operator using a remote controller. Alternatively, the aircraft transfer device 10 may be operated by operating an operation lever or a panel attached to the vehicle body 2.

  According to the above-described embodiment of the present invention, in order to transport the aircraft, the insertion pin 18 of the engaging portion 11 is used in the wheel 1 or the recess of the entire wheel using the wheel of the wheel 1. 11, the engaging portion 11 is clamped from both sides by the clamping portion 13, the wheel 1 is pulled together with the engaging portion 11 and the clamping portion 13 onto the lift base 35 by the pull-in cylinder 14, and the lift base 35 is Lift and then transport the aircraft. These operations are performed by engaging the engaging portion 11 with the wheel hole of the wheel 1 or the entire depression of the wheel, thereby realizing the coupling of the wheel 1 and the vehicle body 2 of the aircraft. Therefore, since no excessive stress is applied to the tire of the wheel 1, it is possible to reliably avoid the adverse effect of causing the tire to be deformed when the aircraft is transferred.

  In addition, this invention is not limited to embodiment mentioned above, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

It is a top view which shows the structure of the aircraft transfer apparatus by embodiment of this invention. It is a top view which shows the state which the aircraft transfer apparatus of FIG. 1 pulled in the wheel of the aircraft. It is a plane sectional view showing the state where the engaging part of the wheel holding device of the aircraft transfer device of FIG. 1 is engaged with the wheel. It is a plane sectional view showing another example of the engaging part of FIG. It is an enlarged view of the wheel holding | maintenance apparatus of FIG. It is a side view which shows the state which has clamped the engaging part with the arm member of the aircraft transfer apparatus of FIG. It is a side view which shows the state which pulled in the wheel of the aircraft with the drawing cylinder from the state of FIG. It is a side view which shows the lift cylinder of the wheel holding | maintenance apparatus of FIG. It is a side view which shows the state which lifted the wheel with the lift cylinder from the state of FIG. It is a top view which shows the structure of the conventional aircraft transfer apparatus.

Brief description of symbols

DESCRIPTION OF SYMBOLS 1 Aircraft wheel 2 Car body 4 Wheel holding device 5 Extension part 7 Drive wheel 8 Self-propelled motor 9 Auxiliary wheel 10 Aircraft transfer device 11 Engagement part 13 Holding part 14 Retraction cylinder 15 Lift cylinder 18 Insertion pin 20 Support member 20a, 20b Both ends 21 and 22 of the support member Engaging member 23 Position adjusting bolt 24 Rotating operation part 26 Arm member 27 Arm member drive cylinder 28 Pin 29 Fixing member 30 Through hole 31 Projection part 34 Retraction guide 35 Lift stand 36 Rotating shaft

Claims (8)

An aircraft transfer device for transferring an aircraft by moving while holding the wheels of the aircraft,
An engaging portion that engages with a wheel of an aircraft wheel, and holding means for holding the wheel;
Lift means for lifting the holding means holding the wheels together with the wheels;
An aircraft transfer apparatus comprising: a holding body and a self-propelled vehicle body to which the lift means is attached.   The aircraft transfer device according to claim 1, wherein the engaging portion is inserted into a hole formed in a center portion of the wheel. The engagement portion includes a pair of insertion portions that are respectively inserted into wheel holes on both sides of the wheel, and a support member that supports the pair of insertion portions so as to be movable in the wheel width direction.
The engaging portion is attached to the wheel by moving a pair of insertion portions supported by the support member in the wheel width direction and inserting the pair of insertion portions into the wheel holes from both sides of the wheel. The aircraft transfer device described in 1. The insertion part has an insertion pin with a male thread cut;
A screw hole is formed in the support member at a position facing the wheel hole of the wheel when the engaging portion is attached to the wheel, and a female screw into which the male screw of the insertion pin is screwed is cut into the screw hole. The aircraft transfer device according to claim 3, wherein the aircraft transfer device is provided. The support member supports the first insertion member in which the insertion hole is formed in a direction corresponding to the wheel width direction and supports the other insertion portion, and the direction corresponding to the wheel width direction while supporting the other insertion portion. A second engagement member having an insertion hole formed therein, an insertion hole of the first engagement member, and a position adjustment bolt into which both sides are inserted into the insertion hole of the second engagement member,
The insertion hole of the first engagement member is configured to increase or decrease the distance between the first engagement member and the second engagement member by rotating the position adjusting bolt clockwise or counterclockwise. 4. The insertion hole of each of the second engagement member and the second engagement member is internally threaded in a predetermined direction, and the position adjusting bolt is externally threaded in a predetermined direction. Aircraft transfer device. The engaging portion is separated from the vehicle body, and the holding means further includes a holding portion that holds the engaging portion attached to the wheel from both sides,
The aircraft transfer device according to any one of claims 1 to 5, wherein the holding portion is attached to the vehicle body. The sandwiching part includes a pair of arm members that sandwich the engaging part engaged with a wheel;
An arm member driving section that moves the pair of arm members in the wheel width direction and clamps the engaging section between the arm members;
A vertical hole is formed in a portion of the arm member that sandwiches the engaging portion, and a protrusion that is inserted into the vertical hole when the arm member is sandwiched by the arm member is formed in the wheel width direction. The aircraft transfer device according to claim 1, wherein:   A wheel holding device for holding a wheel of an aircraft, comprising: an engaging portion that engages with a wheel portion so as not to apply a pressing force to a tire portion of the wheel; and a holding portion that holds the engaging portion from both sides A wheel holding device comprising:

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