Keel structure and drag chain

Abstract

The utility model discloses a keel structure and tow chain, the keel structure includes long strip shape flexible rigid bearing plate piece and the bone joint of arranging and fixedly arranged on bearing plate piece in proper order, wherein, bone joint has first end and second end, and the end face of first end and the end face of second end are all configured as the stress plane extending along bearing plate piece width direction, and the stress plane corresponding to adjacent bone joint contacts when keel structure straightens to limit the swing of bone joint in bearing plate piece width direction, wherein, the first position of bone joint second end is equipped with first position avoidance groove in the root position close to bearing plate piece, and when bearing plate piece is curved, and the first position avoidance groove of bone joint at the bending part provides the accommodating space of next bone joint first end to enter to allow the rotation between adjacent bone joint, the utility model can solve the problem that the bone joint of traditional tow chain bone joint adopts the shaft connection and makes the bone joint lack the restraint in width direction, and the bone joint is easy to shift and swing in the transverse direction, and is difficult to apply to long stroke tow chain.

Claims

1. A keel structure, characterized in that, It includes a long, flexible, rigid support plate and several joints arranged sequentially and fixed on the support plate; The joint has a first end and a second end. The end face of the first end and the end face of the second end are both configured as force-bearing planes extending along the width direction of the bearing plate. The force-bearing planes corresponding to adjacent joints contact each other when the keel structure is straightened to limit the swing of the joints in the width direction of the bearing plate. The second end of the segment is provided with a first clearance groove near the root of the supporting plate. When the supporting plate bends, the first clearance groove of the segment at the bend provides a receiving space for the first end of the next segment to enter, so as to allow rotation between adjacent segments.

2. The keel structure according to claim 1, characterized in that: The joint has a through-hole limiting channel, and the limiting channel is located above the first avoidance groove. The bearing plate passes through the limiting channel, so that the part of the joint with the first avoidance groove is located on the inner side of the bearing plate when it is bent.

3. The keel structure according to claim 2, characterized in that: The first end of the joint is provided with a second clearance groove at a position close to the root of the supporting plate.

4. The keel structure according to claim 1, characterized in that: The outer contour edge of the joint is rounded.

5. The keel structure according to claim 2 or 3, characterized in that: Along the thickness direction of the joint, the outer wall of the joint has an accommodating notch for the cable to pass through.

6. The keel structure according to any one of claims 1-4, characterized in that: The joint is made of steel and is fixed to the supporting plate by welding or riveting.

7. The keel structure according to any one of claims 1-4, characterized in that: The joint is made of rigid plastic and is fixed to the supporting plate by riveting.

8. The keel structure according to claim 6, characterized in that: Along the thickness direction of the joint, at least one slot is provided on the joint for the riveting component to pass through.

9. A cable chain, characterized in that, include: At least one keel structure as described in any one of claims 1-8; The first connector and the second connector are locked together. The first connector is locked together with the joint located at one end of the keel structure, and the second connector is locked together with the joint located at the other end of the keel structure. A protective sleeve is fitted over the outside of the keel structure and at least partially covers the first joint and the second joint.

10. The cable chain according to claim 9, characterized in that: A ring groove is provided on the outer periphery of the joint; The first connector and / or the second connector include a locking member and an end cap. The locking member has an engaging portion that engages within the annular groove. The engaging portion extends at least partially from the top surface of the joint to the bottom surface. The end cap is detachably connected to the locking member and surrounds the first end of the joint.

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