JP5757784B2 - Turnbuckle - Google Patents

Description

  The present invention mainly relates to a turnbuckle that tensions a lashing rod for container fastening.

  In general, when a large number of containers are transported by ship, as shown in FIG. 14, a plurality of containers 1 are stacked up and down, and one end of a lashing rod 4 is connected to an engagement hole 3 provided in a corner fitting 2 of each container 1. Then, the other end of the lashing rod 4 and the mooring bracket 5 provided on the deck are connected by a turnbuckle 6, and by rotating the turnbuckle 6, the lashing rod 4 is tensioned to fix the container 1 of each stage. It is tightened.

  By the way, in order to efficiently perform the tightening operation of the turnbuckle 6, it is necessary to reduce the rotation operation amount of the turnbuckle 6.

  For this reason, conventionally, as shown in FIG. 14, a plurality of protrusions 4a are provided at a predetermined pitch at the lower end of the lashing rod 4, and a rod receiver provided at the upper end of the turnbuckle 4 among the plurality of protrusions 4a. The rotation amount of the turnbuckle 6 is reduced by fitting the protrusion 4a closest to the portion 7 into the rod receiving portion 6a (see FIG. 5 of Patent Document 1).

  14 and 15 show a state in which the lower end of the lashing rod 4 is inserted into the rod receiving portion 7 provided at the upper end of the turnbuckle 6, and FIGS. 16 and 17 show the turn from the state shown in FIGS. The state where the operation frame 8 of the buckle 6 is rotated and the turnbuckle 6 and the lashing rod 4 are tensioned is shown.

  As shown in FIG. 18, the rod receiving portion 7 at the upper end of the turnbuckle 6 is formed in a bifurcated shape so that the lashing rod 4 can be taken in and out of the operation frame 8 of the turnbuckle 6 from the opening of the bifurcated portion. Yes.

  Further, as shown in FIG. 19, a pocket portion 7 a into which the protrusion 4 a of the lashing rod 4 is fitted is provided on the lower surface of the bifurcated portion, and the operation frame 8 of the turnbuckle 6 is rotated so that the lashing rod 4 When the protrusion 4a is fitted into the pocket portion 7a on the lower surface of the bifurcated portion, the lashing rod 4 cannot be removed from the opening of the bifurcated portion, and the operation frame 8 of the turnbuckle 6 is further rotated, whereby the turnbuckle 6 The tightening operation is completed.

Japanese Patent Laid-Open No. 5-296297

  By the way, since the rod receiving portion 7 provided at the upper end of the operation frame 8 of the turnbuckle 6 has a bifurcated shape as described above, the operation frame 8 of the turnbuckle 6 is rotated so that the opening of the bifurcated portion is the lower surface. , The lashing rod 4 comes out of the bifurcated opening, and the lashing rod 4 may return to the original vertical state with the upper end hook 4c as the center of rotation, as shown by a broken line in FIG.

  As shown by a broken line in FIG. 14, the lashing rod 4 may hit an operator or the like when the lashing rod 4 rotates and returns to the original vertical state as indicated by a broken line.

  Further, during the tensioning work of the turnbuckle 6, as shown by the broken line in FIG. 1, when the lashing rod 4 returns to the original vertical state, the worker stretches his arm, grasps the lashing rod 4 again, Since it is necessary to redo the mounting of the turnbuckle 6 to the rod receiving portion 7, the working efficiency is very bad.

  Therefore, the present invention improves the efficiency of the turnbuckle tightening work by preventing the lashing rod from coming out of the bifurcated opening of the turnbuckle operation frame during the rotation operation of the turnbuckle. It is an object to improve the safety of the workers.

  In order to solve the above-described problems, the present invention provides a screw shaft that is screw-coupled to an operation frame and a bearing portion provided at the lower end of the operation frame, and relatively advances and retracts in the axial direction of the operation frame by the rotation of the operation frame. Provided with a rod receiving portion at the upper end of the operation frame for allowing the lashing rod to be inserted into and retracted from the operation frame, and forming a forked portion into and out of the operation frame on the rod receiving portion. Opening and closing the bifurcated part opening and closing the lashing rod into and out of the operation frame in the turnbuckle that has a pocket part that fits the lower end of the lashing rod at the lower end of the lashing rod on the lower surface of the rod receiving part An opening / closing arm is provided on the rod receiving portion.

  The turnbuckle of the present invention can insert the lashing rod into the operation frame by opening the opening and closing arm, and closing the opening and closing arm closes the opening of the bifurcated portion, so even if the operation frame is rotated, The lashing rod does not fall out of the fork.

  As described above, the turnbuckle according to the present invention does not come out of the opening of the bifurcated portion of the operation frame of the turnbuckle during the rotation operation of the turnbuckle. The safety of workers during container tightening work is also improved.

It is the whole figure of the state which opened the opening-and-closing arm of the turnbuckle of this invention, and fitted the lashing rod in the rod receiving part. It is an enlarged view which shows the relationship between the turnbuckle of FIG. 1, and a lashing rod. FIG. 2 is an overall view showing a state in which the turnbuckle is tensioned by closing the open / close arm and rotating the operation frame of the turnbuckle from the state of FIG. 1. It is an enlarged view which shows the relationship between the turnbuckle of FIG. 3, and a lashing rod. It is a top view which shows the state which opened the opening-and-closing arm of the turnbuckle of this invention. FIG. 6 is a partial front view of FIG. 5. It is a top view which shows the state which closed the opening-and-closing arm of the turnbuckle of this invention. FIG. 8 is a partial front view of FIG. 7. FIG. 8 is a partial right side view of FIG. 7. It is a top view which shows the state which closed the opening-and-closing arm of the turnbuckle of other embodiment of this invention. It is a top view which shows the state which opened the opening-and-closing arm of the turnbuckle of FIG. It is a top view which shows the state which closed the opening-and-closing arm of the turnbuckle of other embodiment of this invention. FIG. 13 is a partial right side view of FIG. 12. It is the whole figure of the state which inserted the lashing rod in the rod receiving part of the conventional turnbuckle. It is an enlarged view which shows the relationship between the turnbuckle of FIG. 14, and a lashing rod. It is a general view which shows the state which tensioned the turnbuckle by rotating the operation frame of a turnbuckle from the state of FIG. It is an enlarged view which shows the relationship between the turnbuckle of FIG. 16, and a lashing rod. It is a top view of the conventional turnbuckle. It is a partial vertical front view of the conventional turnbuckle.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  The turnbuckle 10 according to the present invention is screwed to an operation frame 11 constituted by two left and right operation rods 11a and 11b, and a pair of upper and lower bearing portions 12a and 12b provided at the lower end of the operation frame 11. A screw shaft 13 that relatively moves forward and backward in the axial direction of the operation frame 11 by rotation of the frame 11 is provided.

  At the lower end of the screw shaft 13, there is provided a bifurcated connecting portion 14 that is connected to a mooring bracket 5 provided on a lashing bridge on the deck, and a connecting pin 15 is inserted through the connecting portion 14.

  Further, the screw shaft 13 between the connecting portion 14 and the lower bearing portion 12a is loosened due to the rotation of the operation frame 11 after the operation frame 11 is rotated and the lashing rod 4 and the operation frame 11 are tensioned. A locking nut 16 is provided to prevent the occurrence of the above.

  At the upper end of the operation frame 11, a rod receiving portion 17 through which the lashing rod 4 is inserted into the operation frame 11 so as to advance and retract is provided.

  As shown in FIG. 5, the rod receiving portion 17 has a bifurcated portion 17 a for taking the lashing rod 4 into and out of the operation frame 11.

  The lashing rod 4 used in the turnbuckle according to the present invention is composed of a rod shaft 4b having a diameter that can be inserted into and removed from the opening of the bifurcated portion 17a, and an engagement provided on the corner metal fitting 2 of the container 1 at the upper end of the rod shaft 4b. A hook 4c that hooks into the joint hole 3 is connected by a pin 4d.

  Further, a plurality of protrusions 4a having a larger diameter than the diameter of the rod shaft 4b are provided at a predetermined pitch at the lower end of the rod shaft 4b. The protrusion 4a is formed in an inverted truncated cone shape.

  On the lower surface of the bifurcated portion 17 a of the rod receiving portion 17, a pocket portion 17 b is provided for fitting projections 4 a provided at a predetermined pitch at the lower end of the lashing rod 4.

  In a state where the rod shaft 4b of the lashing rod 4 is inserted through the bifurcated portion 17a of the rod receiving portion 17, the lashing rod 4 can be advanced and retracted in the axial direction as shown in FIGS.

  Then, when the operation frame 11 is rotated and the operation frame 11 is lowered with respect to the screw shaft 13, the protrusion 4a of the lashing rod 4 becomes the lower surface of the bifurcated portion 17a of the rod receiving portion 17 as shown in FIG. In this state, the lashing rod 4 and the operation frame 11 are tensioned by further rotating the operation frame 11.

  As shown in FIG. 5, the turnbuckle according to the present invention opens upward when the rod shaft 4 b of the lashing rod 4 is inserted into the bifurcated portion 17 a of the rod receiving portion 17, and the bifurcated portion of the rod receiving portion 17. After the rod shaft 4b of the lashing rod 4 is inserted into 17a, as shown in FIG. 7, the opening of the bifurcated portion 17a of the rod receiving portion 17 is closed, and the lashing rod 4 from the bifurcated portion 17a of the rod receiving portion 17 is closed. An open / close arm 18 that prevents the rod shaft 4 b from dropping off is provided on the upper surface of the bifurcated portion 17 a of the rod receiving portion 17.

  As shown in FIG. 7, the open / close arm 18 is formed in a bifurcated shape orthogonal to the bifurcated portion 17 a of the rod receiving portion 17.

  On the upper surface of the bifurcated portion 17 a of the rod receiving portion 17, a pair of opposed struts 19 that rotatably support the open / close arm 18 are provided, and a base portion 18 a of the bifurcated open / close arm 18 is fitted between the struts 19. ing.

  A bolt 20 serving as a rotation axis of the opening / closing arm 18 is inserted through the opposing support column 19 and a base portion 18 a of the opening / closing arm 18.

  The base portion 18a of the opening / closing arm 18 is provided with a notch 18b. A bolt 20 of the notch 18b is provided with a helical spring 21, and the helical spring 21 causes the opening / closing arm 18 to be connected to the rod receiving portion 17. The opening / closing arm 18 is biased so as to abut on the upper surface of the bifurcated portion 17a.

  As shown in FIGS. 5 and 6, when the open / close arm 18 is pushed upward by hand, the helical spring 21 is contracted, the bifurcated portion 17a of the rod receiving portion 17 is opened, and the open / close arm 18 pushed up by hand is released. The open / close arm 18 is returned by the helical spring 21 so that it contacts the upper surface of the bifurcated portion 17a of the rod receiving portion 17.

  After opening the open / close arm 18 and inserting the rod shaft 4b of the lashing rod 4 into the bifurcated portion 17a, when the open / close arm 18 is closed as shown in FIGS. 7 and 8, even if the operation frame 11 is rotated, The rod shaft 4b of the lashing rod 4 does not come out from the bifurcated portion 17a of the rod receiving portion 17.

  When the opening of the bifurcated portion 17 a of the rod receiving portion 17 faces downward, the stress of the lashing rod 4 is applied to the opening / closing arm 18. In order to receive the stress applied to the open / close arm 18, a stopper 22 is provided on the upper surface of the bifurcated portion 17a.

  As shown in FIGS. 5 and 6, an inclined surface 23 for hooking fingers is formed at the tip of the opening / closing arm 18 in order to make it easier for the fingertip to hook on the tip of the opening / closing arm 18 when the opening / closing arm 18 is lifted by hand. ing.

  Next, FIGS. 10 and 11 show another embodiment of the turnbuckle 10 according to the present invention. In this embodiment, instead of the helical spring 21 for opening and closing the opening / closing arm 18, the support 19 of the rod receiving portion 17 and The spring washer 24 is fitted between the base 18a of the open / close arm 18, and the open / close arm 18 is fixed to the closed position shown in FIG. 10 and the open position shown in FIG. 11 by the elasticity of the spring washer 24. I can do it.

  Further, in the embodiment shown in FIGS. 10 and 11, a finger hook 25 is provided on the opening / closing arm 18 so as to be convenient for opening / closing the opening / closing arm 18.

  Next, FIGS. 12 and 13 show another embodiment of the turnbuckle according to the present invention. In this embodiment, the locking means capable of fixing the opening / closing arm 18 in the opened position and the closed position are respectively provided as the opening / closing arm. A ball 27, which is housed in the base portion of the rod 18, is pressed against the column 19 side of the rod receiving portion 17 by a spring 26, and the ball receiving portion 17 is fitted in the open and closed positions of the opening / closing arm 18. And a recess 28 provided in the support post 19.

DESCRIPTION OF SYMBOLS 1 Container 2 Corner metal fitting 3 Engagement hole 4 Lashing rod 4a Projection part 4b Rod shaft 4c Hook 4d Pin 5 Mooring metal fitting 10 Turn buckle 11 Operation frame 11a, 11b Operation rod 12a, 12b Bearing part 13 Screw shaft 14 Connection part 15 Connection pin 16 Locking nut 17 Rod receiving portion 17a Bifurcated portion 17b Pocket portion 18 Opening / closing arm 18a Base portion 18b Notch portion 19 Post 20 Bolt 21 Winding spring 22 Stopper 23 Inclined surface 24 Spring washer 25 Finger hook portion 26 Spring 27 Ball 28 Recess

Claims (2)

An operation frame and a screw shaft that is screw-coupled to a bearing provided at the lower end of the operation frame and relatively moves back and forth in the axial direction of the operation frame by rotation of the operation frame. A rod receiving part that is inserted into and retracted from the operation frame is provided. A bifurcated part is formed in the rod receiving part for inserting and removing the lashing rod into and from the operation frame. In a lashing rod tensioning turnbuckle provided with a pocket that fits the protrusions provided at a pitch of 1 mm, an opening / closing arm that opens and closes the opening of the bifurcated portion for taking the lashing rod into and out of the operation frame is used as the rod receiving portion. provided, helical the closing arm is provided to be rotated by the rotation axis in a direction perpendicular to the opening direction of the forked portion, which biases the direction to close the opening and closing arm to the rotary shaft Lashing rod tension for turnbuckle, characterized in that it provided a value. 2. The lashing rod tension turnbuckle according to claim 1, wherein a locking means for fixing the open / close arm in the open position and the closed position is provided between the open / close arm and the bifurcated portion.

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