JP2003334613A - Apparatus for straightening bar-shaped member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a straightening apparatus which is suitable to easily straighten the deformation of the loose end (upper edge part) of a transporting truck panel. <P>SOLUTION: This apparatus is constituted of a bar-shaped main body 1, a screw jack 2 which is attached to this bar-shaped main body 1 and a pair of contact members 7A, 7B which are attached to the bar-shaped main body 1 at one side of the jack 2. An engaging part 13 which can be engaged to the bar-shaped member P is provided on the first contact member 7A near the jack 2 in the opposite direction to the separating and approaching direction relative to a tip metal fitting 6 of the jack 2 and, on the second contact member 7B far from the jack 2, an engaging part 14 which can be engaged to the bar- shaped member P in the separating and approaching direction of the bar-shaped member P by the tip metal fitting 6 of the jack 2 is provided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strain relief device for correcting the deformation of a rod-shaped member that constitutes a panel or the like that is erected around the loading platform of a transportation cart.

[0002]

2. Description of the Related Art An example of a carrier truck will be described with reference to FIG. 8. A back panel 43 and left and right side panels 44, 45 are provided upright on three sides of a carrier 42 having wheels 41 for moving under the four corners. A trolley 47 is known which is provided with a connecting bar 46 that is detachable or detachable on the front surface. Specifically, the cargo bed 42 is detachable or has panels 43 to 45.
One of the left and right side panels 44, 45 is foldably supported so as to overlap with the inside of the back panel 43.

For example, the carriage 47 having the above-mentioned structure
Each of the panels 43 to 45 used for is mainly composed of a peripheral frame 48 formed of a pipe material, a shaped steel or the like, and a plurality of stages of horizontal frames installed on the peripheral frame 48 in order to reduce the weight of the entire carriage. The cross frame 49 and the surrounding frame 4 so as to intersect with the cross rail 49.
It is generally configured in a lattice shape with a plurality of vertical rails 50 erected on 8.

[0004]

The grid-structured panels 43 to 45 used in the above-mentioned transportation carts and the like are as follows.
When it is fixed with a rope hook when it is transported by truck, the panels 43 to 45 may be damaged by over tightening the rope.
In many cases, the surrounding frame 48 and the like are deformed inward. When such a panel deformation occurs, conventionally, the work of restoring the deformation is performed by pulling the deformed portion such as the peripheral frame outward with a hand or hitting it outward with a hammer. However, even though the work requires a great deal of labor for the worker, it is not easy to obtain a satisfactory result.

Of course, when an external force acts downward on the panels 43 to 45 due to another object falling onto the panels 43 to 45, the peripheral frame 48 of the panels 43 to 45 faces outward. Although it may be curved and deformed, even in such a case, the work of returning the deformed portion to the original position was performed in the same manner as described above.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a strain relief device for a rod-shaped member capable of solving the above-mentioned conventional problems, and the means will be described later. When shown with the reference numeral,
A screw type jack 2 attached to the rod-shaped body 1,
It is composed of a pair of contact members 7A, 7B attached to the rod-shaped body 1 on one side of the jack 2, and the first contact member 7A close to the jack 2 among the pair of contact members 7A, 7B is A receiving portion 13 or 14 for receiving the rod-shaped member P to be corrected is provided in a direction opposite to the push-pull correction direction of the rod-shaped member P to be corrected by the tip fitting 6 of the jack 2, and the second contact member 7B far from the jack 2 is provided. Is provided with a receiving portion 14 or 13 for receiving the rod-shaped member P to be corrected in the same direction as the push-pull correction direction of the rod-shaped member P to be corrected by the tip fitting 6 of the jack 2.

To carry out the present invention having the above-described structure, specifically, the jack tip fitting 6 is provided with a pulling engagement portion 8 that engages with the rod-shaped member P to be corrected in the pulling direction. The pressing member 7A is provided with a pressing receiving portion 13 for receiving the rod-shaped member P to be corrected in the pressing direction, and the second pressing member 7B is provided.
The pulling engagement portion 14 that receives the rod-shaped member P to be corrected in the pulling direction can be provided on the. Furthermore, in the rod-shaped body 1,
On the side opposite to the side where the first contact member 7A is located with respect to the jack 2, a third contact member 7C provided with a pressing receiving portion 13 for receiving the rod-shaped member P to be corrected in the pressing direction can be attached. In this case, it is possible to remove the second contact member 7B from the rod-shaped main body 1 or move it to a retracted position where it does not interfere with the rod-shaped member P to be corrected.

Further, the jack tip fitting 6 is provided with a push engaging portion 15 which engages with the rod-shaped member P to be corrected in the pushing direction, and the rod-shaped member P to be corrected is pulled to the first contact member 7A. It is possible to provide a receiving portion 14 that receives in the direction, and to provide a push engagement portion 13 that receives the rod-shaped member P to be corrected in the pushing direction on the second contact member 7B. Further, the rod-shaped main body 1 is provided with a receiving portion 14 for receiving the rod-shaped member P to be corrected in the pulling direction, on the side opposite to the side where the first padding member 7A is provided with respect to the jack 2. 7C can be attached. Also in this case, the second contact member 7
B is removed from the rod-shaped body 1 or the rod-shaped member P to be corrected is
It can be configured so that it can be moved to a retracted position that does not interfere with.

Further, a push engaging portion 1 for engaging the tip metal fitting 6 of the jack 2 with the rod member P to be corrected in the pushing direction.
5 and a pulling engagement portion 8 that engages in the pulling direction are provided, and each of the abutting members 7A to 7C also has a rod member P to be corrected P.
It is possible to provide a receiving portion 14 for receiving the force in the pulling direction and a receiving portion 13 for receiving the force in the pushing direction.

Regardless of which configuration is adopted, it is desirable that the contact members 7A to 7C be mounted so that their positions can be changed and fixed in the longitudinal direction of the rod-shaped body 1.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In the first embodiment shown in FIGS. 1 to 3, 1 is a rod-shaped body using a square pipe, A screw type jack 2 is attached at a position near one end in the length direction. The jack 2 includes a screw shaft 4 threaded through a through-screw hole formed by using a nut 3 fixed to the rod-shaped body 1 in a direction perpendicular to the length direction of the rod-shaped body 1, and the screw shaft 4. The handlebar 5 is attached to the outer end of the screw shaft 4 at right angles, and the tip fitting 6 is attached to the inner end of the screw shaft 4 so as to be relatively rotatable around the axis of the screw shaft 4.
It consists of and. A first contact member 7A and a second contact member 7B, which are movable and fixed in the length direction of the rod-shaped body 1 on one side of the jack 2, are attached to the rod-shaped body 1.

A square hook-shaped pull for hooking a rod member P in a direction parallel to the rod body 1 on the extension line of the axis of the screw shaft 4 and pulling it toward the rod body 1 is attached to the tip end fitting 6 of the jack 2. The engaging portion 8 is provided. The first and second contact members 7A, 7B are fitted on the rod-shaped main body 1 so as to be movable only, and can be fixed to the rod-shaped main body 1 by fixing bolts 9 at arbitrary positions. Pillar member 11 projecting on the side of the front end metal fitting 6
And a tip fitting 12 fixed to the tip of the strut member 11.
The tip fitting 12 of the first contact member 7A is fitted into a rod-shaped member P in a direction parallel to the rod-shaped main body 1 to receive the rod-shaped member P in a pushing direction that moves the rod-shaped member P away from the rod-shaped main body 1. A pressing portion 13 having a V-shape is formed, and the tip fitting 12 of the second contact member 7B is fitted to a rod-shaped member P oriented parallel to the rod-shaped main body 1 to pull the rod-shaped member P toward the rod-shaped main body 1 side. A square hook-shaped receiving portion 14 is formed for receiving.

Explaining the method of use, as shown in FIG. 1, the tip metal fitting 6 of the jack 2 is attached to both contact members 7A, 7A.
The free end bends or folds to one side in a state in which it is advanced to the outside (the side opposite to the side where the rod-shaped main body 2 is present) by an appropriate amount from the line connecting the receiving portions 13 and 14 of the tip fitting 12 of B. The square hook-shaped pulling engagement portion 8 of the tip fitting 6 of the jack 2 is hooked on the deformed region of the bent rod-shaped member P. Then, the rod-shaped main body 1 is oriented parallel to the rod-shaped member P, the U-shaped push-receiving portion 13 of the tip fitting 12 of the first contact member 7A is fitted near the starting end portion of the deformation region of the rod-shaped member P, and The square hook-shaped receiving portion 13 of the tip fitting 12 of the second contact member 7B is fitted to an appropriate position away from the deformation region of the rod member P. In this state, the handlebar 5 is used to rotate the screw shaft 4 of the jack 2 in the pull-in direction to pull the tip end metal 6 of the jack 2 toward the rod-shaped body 1. As a result, a rotational force is applied to the rod-shaped member P with the vicinity of the starting end portion of the deformation region of the rod-shaped member P, that is, the contact point between the first contact member 7A and the pressing receiving portion 13 as a fulcrum. Since it is received by the receiving portion 14 of the second contact member 7B, the deformation area of the rod-shaped member P is eventually the jack 2
With the square hook-shaped pulling engagement portion 8 of
Of the rod-shaped body 1 with the contact point of the pressing portion 13 with the pressing portion 13 as a fulcrum
Can be bent to the side. Therefore, pull the tip fitting 6 of the jack 2 toward the rod-shaped main body 1 until the deformation region of the rod-shaped member P reaches the extension of the linear region received by the first and second contact members 7A, 7B or the vicinity thereof. Thereby, the deformation of the deformation area of the free end portion of the rod-shaped member P can be corrected, and the entire rod-shaped member P can be returned to the original linear shape or a state close thereto.

When the deformation of the deformation area of the free end portion of the rod-shaped member P is corrected and returned to the original linear shape, the screw shaft 4 of the jack 2 is rotated in the reverse direction so that the tip fitting 6 is moved away from the rod-shaped main body 1. The rod 2 from the rod-shaped member P
Also, the contact members 7A and 7B can be removed. The positions of the contact members 7A and 7B and the distance between the contact members 7A and 7B are adjusted by moving the slide body 10 along the rod-shaped body 1 with the fixing bolt 9 loosened, and adjusting the position of the fixing bolt 9 after the position adjustment. It is possible to adjust according to the length of the deformation region of the rod-shaped member P by the method of fastening the slide body 10 to the rod-shaped main body 1 by fastening.

In the apparatus of the first embodiment described above, the rod-shaped body 1 is arranged on the side of the bending correction direction of the deformation region of the rod-shaped member P whose free end portion is curved or bent, and the rod-shaped member P is arranged. The deformed region is drawn by the jack 2 and is straightened. However, as shown in FIG. 4, the rod-shaped body 1 is provided on the opposite side of the deformed region from the bending correction direction side of the rod-shaped member P. It may be arranged so that the deformed region of the rod-shaped member P can be straightened by pressing with the jack 2.

That is, in the second embodiment shown in FIG. 4, the rod-shaped member P oriented parallel to the rod-shaped main body 1 is separated from the rod-shaped main body 1 on the extension of the axis of the screw shaft 4 in the tip fitting 6 of the jack 2. A U-shaped push engaging portion 15 for pushing out in the direction is provided, and the tip fitting 12 of the first contact member 7A on the side close to the jack 2 is provided at the tip fitting 12 of the second contact member 7B shown in FIG. Is provided with a square hook-shaped receiving portion 14 that is the same as the receiving portion 14 of FIG.
1 is provided with a U-shaped push receiving portion 13 that is the same as the push receiving portion 13 of the tip fitting 12 of the first contact member 7A shown in FIG. Specifically, the first and second contact members 7A and 7B of the embodiment shown in FIG. 1 are once removed from the rod-shaped body 1, and the order is reversed, and the rod-shaped body 1 is attached again.
This can be carried out by replacing only the tip fitting 6 of the jack 2 with the one having the pulling engaging portion 8 and the one having the pushing engaging portion 15.

In the third embodiment shown in FIG. 5, the rod-shaped main body 1 in the first embodiment is lengthened to the side opposite to the side where the first contact member 7A is located with respect to the jack 2, and the rod-shaped main body 1 is A third contact member 7C, which is the same as the first contact member 7A, is attached to the jack 2 on the side opposite to the side where the first contact member 7A is located. According to this configuration, the deformed region of the rod-shaped member P that is deformed so that the intermediate portion in the lengthwise direction projects to one side can be straightened. That is, the rod-shaped body 1
Is arranged on the bending correction side of the deformation area of the rod-shaped member P, the tip fitting 6 (pull engagement portion 8) of the jack 2 is engaged with the central portion of the deformation area of the rod-shaped member P, and the first contact member 7A
Tip fitting 12 (press receiving portion 13) and third contact member 7C
By engaging the tip fittings 12 (press receiving portions 13) of the above with both ends of the deformation region of the rod-shaped member P, and moving the tip fittings 6 of the jack 2 to the rod-shaped main body 1 side in such a state, The central portion of the deformation region of the rod-shaped member P between the three contact members 7A and 7C can be pulled toward the rod-shaped main body 1 side to straighten and straighten the deformation region of the rod-shaped member P.

In the third embodiment, when the third contact member 7C is used as described above, the second contact member 7B is not used, so that it can be removed from the rod-shaped body 1. Of course, if the second contact member 7B does not interfere when the third contact member 7C is used, it may be left attached to the rod-shaped body 1. Also, as in the first embodiment,
When performing the straightening operation of the deformation region of the free end portion of the rod-shaped member P using the first and second abutting members 7A and 7B, the third abutting member 7C may be removed from the rod-shaped main body 1.

In the fourth embodiment shown in FIG. 6, the rod-shaped main body 1 in the second embodiment is lengthened to the side opposite to the side where the first contact member 7A is located with respect to the jack 2, and the rod-shaped main body 1 is A third contact member 7C, which is the same as the first contact member 7A, is attached to the jack 2 on the side opposite to the side where the first contact member 7A is located. Also in the device of the fourth embodiment, as in the third embodiment, it is possible to straighten the deformed region of the rod-shaped member P that is deformed such that the intermediate portion in the lengthwise direction projects to one side. . That is, the rod-shaped main body 1 is arranged on the side opposite to the straightening side of the deformation region of the rod-shaped member P, and the tip metal fitting 6 (push engagement portion 15) of the jack 2 is attached to the central portion of the deformation region of the rod-shaped member P. While fitting together, the tip fitting 12 (the receiving portion 14) of the first contact member 7A and the tip fitting 12 (the receiving portion 14) of the third contact member 7C are engaged with both ends of the deformation region of the rod-shaped member P, In such a state, by moving the tip fitting 6 of the jack 2 to the side away from the rod-shaped body 1, the central portion of the deformation region of the rod-shaped member P between the first and third contact members 7A and 7C is separated from the rod-shaped body 1. Then, the deformed region of the rod-shaped member P can be linearly bent and straightened.

Also in the fourth embodiment, when the third contact member 7C is used as described above, the second contact member 7B is used.
Since it is not used, it can be removed from the rod-shaped body 1. Of course, if the second contact member 7B does not interfere when the third contact member 7C is used, it may be left attached to the rod-shaped body 1. In addition, as in the second embodiment, when the bending correction work of the deformation region of the free end portion of the rod-shaped member P is performed using the first and second contact members 7A and 7B, the third contact member 7C is set to the rod-shaped main body. You can remove it from 1.

In order to implement the first embodiment and the second embodiment with the device having the same structure, or to implement the third embodiment and the fourth embodiment with the device having the same structure, FIG. As shown in the drawing, the jack 2 has a tip fitting 6 in which an inward pulling engagement portion 8 and an outward push engagement portion 15 are continuously provided so that the push engagement portion 15 is on the outside. In addition, as the abutting members 7A and 7B or the abutting members 7A to 7C, an inward receiving portion 14 and an outward push receiving portion 13 are continuously provided to the tip fitting 12 so that the push receiving portion 13 is on the outer side. You can use the one that you made.

[0022]

The strain relief device for a rod-shaped member of the present invention can be implemented and used as described above, and according to the device of the present invention, a carriage for transportation as shown in FIG. When correcting the bending or bending deformation of the free end portion of the rod-shaped member constituting the panel around the, the tip end metal fitting of the jack is engaged with the deformation region of the rod-shaped member and the first contact member is deformed of the rod-shaped member. The jack is operated near the starting end of the region and the second contact member is engaged at an appropriate position away from the deformation region of the rod-shaped member. By pushing or pulling the deformed region in the bending straightening direction, the deformation of the deformed region of the rod-shaped member can be straightened or nearly straightened.

That is, by using the device of the present invention,
The bending or bending deformation of the free end of the rod-shaped member that constitutes the panel can be easily and easily corrected simply by operating the screw type jack, and the deformed panel can be easily restored to the original shape or a state close to it in the field. Therefore, it can be used beautifully and safely.

According to the structure of claim 2, when the free end portion (upper end portion) of the peripheral frame of the panel is curved or bent inward, the deformation of the peripheral frame is corrected. Work,
This can be easily performed with the device of the present invention arranged outside the panel.

Further, according to the structure of claim 3, even when the intermediate portion of the peripheral frame of the panel is curved or bent inward, the correction work of the deformation of the peripheral frame is concerned. It can be easily performed with the device of the present invention arranged on the outside of the panel.

Further, according to the configuration of claim 4, when the free end portion (upper end portion) of the peripheral frame of the panel is curved or bent outward, the deformation of the peripheral frame is corrected. The work can be easily performed with the device of the present invention arranged outside the panel.

Further, according to the configuration of claim 5, even when the middle portion of the peripheral frame of the panel is curved or bent outward, the correction work of the deformation of the peripheral frame is concerned. It can be easily performed with the device of the present invention arranged on the outside of the panel.

According to the structure described in claim 6, the straightening work adapted to the device described in claim 2 or 3 and the straightening work adapted to the device described in claim 4 or 5. Both can be selectively performed by one device.

Further, according to the structure described in claim 7, the interval and the position of the abutting member are changed according to the length and the position of the deformation region of the rod-shaped member whose deformation is to be corrected, so that the bar member is always efficiently and effectively. Deformation correction work can be performed.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view showing a usage state of a device of the present invention according to a first embodiment.

FIG. 2 is a vertical sectional side view showing a screw type jack of the apparatus.

FIG. 3 is a vertical sectional side view showing a first contact member of the apparatus, and FIG. 3B is a vertical sectional side view showing a second contact member of the apparatus.

FIG. 4 is a partially longitudinal side view showing a usage state of the device of the present invention according to a second embodiment.

FIG. 5 is a side view showing a usage state of the device of the present invention according to the third embodiment.

FIG. 6 is a side view showing a usage state of the device of the present invention according to the fourth embodiment.

FIG. 7 is a vertical sectional side view showing a modified example of the contact member, and FIG. 7 is a vertical sectional side view showing a modified example of the jack.

FIG. 8 is a perspective view showing a carriage for carrying out correction work with the device of the present invention.

[Explanation of symbols]

1 Bar-shaped body using square pipe 2 screw type jack 4 screw shaft 5 handlebar 6 Jack tip bracket 7A to 7C Abutting member 8 Pull-engagement part of jack tip fitting 9 fixing bolt 10 Sliding body 11 prop members 12 Fitting member tip fitting 13 Pushing part of the tip of the contact member 14 Receiving part of abutting member tip fitting 15 Jack tip metal fittings 43-45 Transport trolley panel 48 panel surrounding frame P Straightened bar

Claims (7)

[Claims] 1. A rod-shaped main body, a screw-type jack attached to the rod-shaped main body, and a pair of abutting members attached to the rod-shaped main body on one side of the jack. Among the pair of abutting members, The first padding member close to the jack is provided with a receiving portion for receiving the rod-shaped member to be straightened in the direction opposite to the push-pull straightening direction of the rod-shaped member to be straightened by the tip fitting of the jack, and the second padding far from the jack. The strain relief device for a rod-shaped member, wherein the member is provided with a receiving portion for receiving the rod-shaped member to be straightened in the same direction as the push-pull correction direction of the rod-shaped member to be straightened by the tip fitting of the jack. 2. The jack tip fitting is provided with a pulling engagement portion which engages with the rod-shaped member to be corrected in the pulling direction, and the first abutting member is provided with a pushing member for receiving the rod-shaped member to be corrected in the pushing direction. The strain relief device for a rod-shaped member according to claim 1, wherein a receiving portion is provided, and the second contact member is provided with a pulling engagement portion that receives the straightened rod-shaped member in a pulling direction. 3. A third abutting member, wherein the rod-shaped main body is provided with a push receiving portion for receiving the rod-shaped member to be corrected in a pushing direction on a side opposite to a side where the first abutting member is provided with respect to the jack. The strain relief device for a rod-shaped member according to claim 2, wherein the device is attached. 4. The jack tip fitting is provided with a push-engaging portion that engages with the rod-shaped member to be corrected in the pushing direction, and the first contact member receives the rod-shaped member to be corrected in the pulling direction. The strain relief device for a rod-shaped member according to claim 1, wherein a portion is provided, and the second contact member is provided with a push-engagement portion that receives the rod-shaped member to be corrected in a pushing direction. 5. A third contact member provided with a receiving portion for receiving the rod member to be corrected in a pulling direction on the side opposite to the side where the first contact member is provided with respect to the jack, in the rod-shaped main body. The strain relief device for a rod-shaped member according to claim 4, which is attached. 6. A tip engaging portion of the jack is provided with a push engaging portion that engages with the rod-shaped member to be corrected in a pushing direction and a pulling engaging portion that engages in a pulling direction, and each of the abutting members is provided. The strain relief device for a rod-shaped member according to any one of claims 1 to 5, wherein the strain-relieving device for a rod-shaped member is provided with a receiving portion that receives the rod-shaped member to be corrected in a pulling direction and a pressing receiving portion that receives in the pushing direction. 7. Each of the abutting members is mounted so as to be positionally fixed in the longitudinal direction of the rod-shaped body.
The strain relief device for a rod-shaped member according to any one of 1.