JPS6363439B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gripper type bearing device used in a device for supporting and tightening a load on the underside of an aircraft.

[Conventional technology]

In Patent Application No. 134121 of 1980, published under Japanese Patent Application Laid-open No. 55-55100, the applicant of the present invention disclosed a device for supporting and tightening a payload on the underside of an aircraft. In this device, a central simultaneous control mechanism for a vertically movable bearing member actuates a payload at two longitudinally spaced positions adjacent to a pair of suspension hooks, and a central simultaneous control mechanism for a vertically movable bearing member located between these two positions; It is combined with a stress uniform distribution mechanism that can balance the forces transmitted to the In particular, the vertically movable bearing member consists of two lateral arms which pivot about a fixed axis and form a clamping grip and which are controlled via a link by a vertical sliding member. .

[Problem that the invention seeks to solve]

A payload supported on the underside of an aircraft in certain cases may have a substantially flat top surface or, in contrast, a cylindrical surface of relatively small radius.
The movement of the clamping arm between permissible end positions under these conditions is relatively long and corresponds to the angular movement of the corresponding link. On the other hand, payloads supported on the underside of the aircraft can reach such high values that the overall dimensions of the overloaded link are compromised. These problems can be solved in accordance with the invention by using a bearing arrangement, in place of the link, in which the arm end is attached directly to the sliding member by an axle pin and is driven for sliding movement in the vertical direction. The rotation centers of these arms, which cannot be fixed on the arms, are designed to freely slide within elongated holes formed in the arms.

[Means for solving problems]

The gripper type bearing device according to the invention for a device for supporting and clamping a load on the underside of an aircraft has one end of the clamping arm attached to a sliding body which moves in a direction perpendicular to the axis of the load in a guiding bore under the action of a control member. the clamping arm is pivotally connected to the fixed frame structure at a midpoint between the ends of the clamping arm by respective pivot members extending through the slotted holes, and the opposite end of the clamping arm is connected to the load to operate as a clamp. This is to engage the object.

[Examples and effects]

Next, embodiments of the present invention will be described with reference to the accompanying drawings.

With reference to FIG. 1, reference numeral 101 indicates a frame structure of the support device, 102 is a vertical sliding body fixed to a screw rod 103, and the screw rod 103 meshes with a rotating nut 104 fixed to a bevel gear 105. ing. The sliding body 102 is movable within a bore 106 formed in the frame structure 101, and is connected to a pair of arms 108 and 10 by a pivot member 107.
9 is rotatably provided. arms 108 and 10
Fixed pivot member 110 guiding the rotational movement of 9
and 111 are supported by a frame structure 101 with bearings 112 (FIG. 2) at its ends. These pivot members 110 and 111 connect arms 108 and 1
A flat surface 113 is formed in the pivot member to provide a contact surface capable of engaging the sides of slotted holes 114 and 115 drilled in 09.

The left half of Figure 1 shows the flat top surface 1 of a flat load.
16 and the right half shows the cylindrical surface 117 of the cylindrical load with a relatively small diameter. The horizontal section of FIG. 2 is along the bearing location where pivot member 107 is at the same height as fixed pivot members 110 and 111.

The device operates as follows. When the sliding body 102 is in its lowest position, as shown in the left part of FIG. correspondingly in their maximum open position. When the slide 102 is raised as a result of the actuation of the central control mechanism, the arm 10
8 and 109 are now pivoted about pivot members 110 and 111, but since pivot member 107 is guided along a vertical straight path, the distance between the axes of pivot members 110 and 111 on the one hand is different from that on the other hand. , the distance of the axis of the pivot member 107 changes. The guiding passage consisting of slotted holes 114 and 115 can accommodate this change in center-to-center distance. The arms 108 and 109 can thus be moved gradually from the position shown in the left-hand part of FIG. 1 to the position shown in the right-hand part of FIG. 1, which corresponds to the clamping of the cylindrical load.

The operating mode of the device is to form elongated holes 114 and 115 in the frame structure 101, and to form arms 108 and 109.
The same applies to the case where the pivot members 110 and 111 are fixed to each other. In this case, the change in the center-to-center distance is absorbed by the movement of pivot members 110 and 111 fixed to arms 108 and 109 inserted into elongated holes 114 and 115 of frame structure 101.

〔Effect of the invention〕

Since the present invention has the above-mentioned configuration, it is possible to tighten both loaded items with a flat top surface and cylindrical loaded items, and even support heavy loaded items without any problem.

[Brief explanation of drawings]

The figures show an embodiment of the gripper type bearing device of the present invention, and FIG. 1 is a vertical sectional view thereof, and FIG. 2 is a cross sectional view of the bearing device shown in FIG. 1. 101...Frame structure, 102...Vertical sliding body, 10
3...Threaded rod, 104...Rotating nut, 105...Bevel gear, 106...Inner cavity, 107...Pivot member, 10
8, 109... Pair of arms, 110, 111... Fixed pivot member, 102... Bearing, 113... Plane,
114, 115...Elongated hole, 116...Plane, 117
...Cylindrical surface.

Claims (1)

[Claims] 1. An inner cavity is formed in the frame structure, and one end of a pair of arms is respectively pivoted to a vertical sliding body that moves in the inner cavity in a direction perpendicular to the axis of the load based on the action of a central control mechanism. A slotted hole is formed in each arm, and a fixed pivot member is fixed to the frame structure, and each fixed pivot member passing through the slotted hole connects the intermediate point between both ends of the arm to the frame structure. a gripper-type bearing arrangement for a device for supporting and clamping a payload on the underside of an aircraft, each pivotally mounted on the underside of the aircraft, and further having opposite ends of the arms engaged with the payload to operate as a clamp. 2. Claim 1, characterized in that the contact surface between the fixed pivot member and the elongated hole is flat.
A gripper type bearing device for a device for supporting and clamping a load on the underside of an aircraft as described in paragraph 1. 3. An inner cavity is formed in the frame structure, and one end of a pair of arms is pivotally connected to a vertical sliding body that moves in the vertical direction with respect to the axis of the loaded object within the inner cavity based on the action of a central control mechanism. fixing fixed pivot members and forming elongated holes in the frame structure, respectively pivoting intermediate points between both ends of the arm to the frame structure by each fixed pivot member passing through the elongated holes; Furthermore, a gripper type bearing arrangement for a device for supporting and clamping a payload on the underside of an aircraft in which the opposite end of the arm engages the payload to act as a clamp.