A new G-shaped clamp

Abstract

The utility model relates to a novel G-shaped clamp, mainly used for clamping the straight edge boundary of reinforced flat plate or reinforced cylindrical curved plate test piece, especially suitable for the static test of reinforced flat plate or reinforced cylindrical curved plate in the fields of aerospace, ship, pressure vessel and the like. The clamp adopts a novel G-shaped structure design, comprising a groove frame, a fixed end bearing rotatable chuck, a movable end bearing rotatable chuck and a movable end screw rod and the like. By rotating the movable end screw rod, the movable end bearing rotatable chuck is driven to open and close along the length direction of the frame, and the opening and closing degree of the clamp is controlled. Two bearings are respectively fixed in the fixed end F-shaped support and the movable end groove support, forming a linearly slidable clamping surface, so that the straight edge of the reinforced flat plate or reinforced cylindrical curved plate can linearly slide relative to each other between the two bearings, thereby achieving the purpose of releasing the translational constraint in the straight edge direction. The utility model has the characteristics of simple structure, convenient operation, stable clamping and the like, and has a wide application prospect.

Claims

1. A new G-shaped clamp characterized in that, Includes a channel frame (1), a fixed end round hole (2), a movable end screw hole (3), a fixed end F-shaped support (4), a fixed end bearing (7), a fixed end bolt (8), a thin screw for fixing the F-shaped support (9), a movable end channel support (10), a movable end bearing (14), a movable end bolt (15), a movable end channel support limiting plate (16), a central round hole in the limiting plate (17), a small round hole in the limiting plate (18), a cross screw (19), a movable end screw (20), and a torsion bar (24); The fixed end bearing (7) is fixed in the fixed end F-shaped support (4) by the fixed end bolt (8) to form a fixed end rotatable chuck with bearing; The movable end bearing (14) is fixed in the movable end slotted support (10) by the movable end bolt (15) to form a movable end rotatable chuck with bearing; The movable end screw (20) has a positioning groove (21) and a smooth short cylindrical end (22) machined at its end.

2. The novel G-shaped clamp according to claim 1, characterized in that, The grooved frame (1) is made by laser cutting a single piece of high-strength steel.

3. The novel G-shaped clamp according to claim 1, characterized in that, The fixed end bearing rotatable clamp is made by two thin screws (9) of fixed F-shaped support passing through the round hole (2) of the fixed end of the slotted frame and threadedly connected to the screw hole (5) on the back of the slotted side of the fixed end F-shaped support, and fixed to the inner side of the slotted frame (1) in the length direction, forming one end of the new G-shaped clamp.

4. The novel G-grip according to claim 1, wherein The movable end screw (20) is connected to the movable end rotatable chuck with bearing and limit plate through the movable end screw thread hole (3) of the slotted frame. The movable end slotted support limit plate (16) is used to adjust the rotation direction of the movable end rotatable chuck with bearing. The movable end screw (20) drives the movable end rotatable chuck with bearing to open and close along the length of the main frame to adjust the opening size of the fixture. The torsion bar (24) passes through the small round hole (23) on the movable end screw for easy manual operation.

5. The novel G-grip according to claim 1, wherein The fixed end bolt (8) passes through the bolt positioning hole (6) on the fixed end F-shaped support and the fixed end bearing (7), thereby fixing the fixed end bearing (7) in the fixed end F-shaped support (4); the movable end bolt (15) passes through the bolt positioning hole (13) on the movable end slotted support and the movable end bearing (14), thereby fixing the movable end bearing (14) in the movable end slotted support (10), and together they form a clamping mechanism.

6. The novel G-grip according to claim 1, wherein The movable end screw (20) passes through the movable end screw thread hole (3) of the slotted frame, and the smooth short cylindrical end (22) of the movable end screw is connected to the movable end slotted support (10) by the movable end slotted support limiting plate (16) and the cross screw (19); the central hole (17) of the limiting plate is ringed in the positioning groove (21), and the smooth short cylindrical end (22) of the movable end screw can rotate freely in the central hole (11) on the back of the slotted side of the movable end slotted support; this allows the movable end rotatable chuck with bearing to open and close along the length of the main frame, and the rotation direction of the movable end rotatable chuck with bearing can be adjusted.

7. The novel G-grip according to claim 1, wherein The movable end slotted support (10) and the movable end slotted support limiting plate (16) are connected by four cross screws (19) passing through the small round hole (18) of the limiting plate and the small screw hole (12) on the back of the slotted side of the movable end slotted support. The positioning groove (21) is placed in the round hole (17) in the middle of the limiting plate, so that the movable end bearing rotatable chuck can rotate freely around the smooth short cylindrical end (22) of the movable end screw. Thus, during the process of adjusting the size of the clamp opening by rotating the movable end screw (20), the movable end bearing (14) and the fixed end bearing (7) are on the same plane, forming a clamping surface that can slide along a straight line.

8. The novel G-grip according to claim 1, wherein This novel G-shaped clamp can be used to clamp the straight edge of a stiffened plate or stiffened cylindrical curved plate and allow it to slide relative to each other in a straight line between two bearings, thereby achieving the purpose of releasing only the translational constraint along the straight edge direction. It can be used for static tests of axial compression and combined axial compression and lateral compression on stiffened plates or stiffened cylindrical curved plates.

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