JP3972595B2 - Bar-shaped strain relief device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strain relief device that corrects deformation of a bar-like member that constitutes a panel or the like that is erected around a loading platform of a transport carriage.
[0002]
[Prior art]
An example of the transport cart will be described with reference to FIG. 6. A back panel 33 and left and right side panels 34, 35 are erected on the three sides of a cargo bed 32 provided with moving wheels 31 at the lower corners, and on the front surface. There is known a transporting carriage 37 on which a connecting bar 36 that is detachable or detachable is installed. Specifically, the loading platform 32 is detachably supported or foldably supported so as to overlap one of the panels 33 to 35, and at least one of the left and right side panels 34 and 35 is a back panel. There is known a transport carriage 37 that is foldably supported so as to overlap the inside of 33.
[0003]
For example, each of the panels 33 to 35 used in the transporting carriage 37 having the above-described configuration includes a peripheral frame 38 formed of a pipe material, a shape steel, and the like mainly in order to reduce the weight of the entire carriage. Generally, a plurality of horizontal rails 39 installed on the peripheral frame 38 and a plurality of vertical rails 40 installed on the peripheral frame 38 so as to intersect the horizontal rails 39 are configured in a lattice shape. is there.
[0004]
[Problems to be solved by the invention]
When the lattice-structured panels 33 to 35 used in the above-described transport carts are fixed by rope hanging during truck transportation, the ropes are intermediate height portions of the panels 33 to 35. In many cases, the peripheral frame 38 of the panels 33 to 35 is deformed inward due to excessive tightening of the rope. When such deformation of the panel occurs, conventionally, an operation to undo the deformation is performed by manually pulling the deformed portion such as the peripheral frame outward or hitting it outward with a hammer. However, although the work puts a lot of labor on the operator, it was not easy to obtain a satisfactory result.
[0005]
Of course, when an excessive external force acts downward on the panels 33 to 35 due to other objects falling on the panels 33 to 35, the peripheral frame 38 of the panels 33 to 35 is curved and deformed outward. However, even in such a case, the work for restoring the deformed portion was performed in the same manner as described above.
[0006]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION An object of the present invention is to provide a rod-shaped member distortion removing device that can solve the above-mentioned conventional problems. The present invention according to claim 1 refers to an embodiment described later. When shown with a reference numeral, a rod-shaped main body 1, a screw-type jack 2 attached to the rod-shaped main body 1, and a pair of contact members 7A, 7B attached to the rod-shaped main body 1 so as to sandwich the jack 2; The tip metal fitting 6 which moves in the perspective direction with respect to the rod-like main body 1 of the jack 2 and the tip metal fitting 12 of the pair of abutting members 7A and 7B are provided with a rod-like member P toward the side where the rod-like main body 1 is located. The hook-shaped engaging portions 20 and 21 to be engaged, and the hook-shaped engaging portions 20 and 21 are provided on the side opposite to the side where the bar-shaped main body 1 is provided and are opposite to the side where the bar-shaped main body 1 is positioned U-shaped engaging part that engages with the rod-shaped member P And 2 and 23 has a configuration in which provided.
[0007]
In carrying out the present invention having the above-described configuration, specifically, as described in claim 2, it is desirable that the pair of contact members 7A and 7B be attached so as to be freely position-changeable in the length direction of the rod-shaped main body 1. .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A reference example based on the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, reference numeral 1 denotes a rod-shaped body using a square pipe, and a screw type at the center in the length direction. A jack 2 is attached. The jack 2 is a screw shaft that is threaded through and penetrated through a through screw hole formed by using a nut 3 fixed at a central position in the length direction of the rod-shaped main body 1 in a direction perpendicular to the length direction of the rod-shaped main body 1. 4, a handlebar 5 attached at right angles to the outer end of the screw shaft 4, and a tip fitting 6 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. The rod-like main body 1 is provided with contact members 7A and 7B that can be moved and fixed in the length direction of the rod-like main body 1 on both sides of the jack 2.
[0009]
The end fitting 6 of the jack 2 has a square hook-shaped engaging portion 8 for hooking a rod-shaped member P oriented parallel to the rod-shaped main body 1 on the extension line of the screw shaft 4 toward the rod-shaped main body 1. Is provided. The pair of abutting members 7A and 7B are externally fitted to the rod-like main body 1 so as to be movable only, and can be fixed to the rod-like main body 1 at any position by fixing bolts 9, and the end fitting of the jack 2 from the slide body 10 6 is composed of a column member 11 projecting on the side having the rod 6 and a tip metal fitting 12 fixed to the tip of the column member 11. The tip metal fitting 12 has a rod-like member oriented in parallel with the rod-shaped main body 1. A U-shaped engaging portion 13 is formed for fitting into P and pushing it away from the rod-shaped main body 1.
[0010]
The method of use will be described. As shown in FIG. 1, the end fitting 6 of the jack 2 is outside by an appropriate amount from the line connecting the tip fittings 12 of the two contact members 7A and 7B (the side opposite to the side where the rod-shaped main body 2 is located). In the state where it has been advanced to the state, it is bent or bent and deformed from a round pipe, a square pipe, a solid bar, a flat strip, etc. Hook the square hook-shaped engaging portion 8 of the end fitting 6 of the jack 2 against the top of P. Then, the rod-shaped main body 1 is oriented in parallel with the rod-shaped member P, and the U-shaped engaging portion 13 of the end fitting 12 of each of the contact members 7A and 7B is fitted to the rod-shaped member P. In this state, the handlebar 5 is used to rotate the screw shaft 4 of the jack 2 in the pulling direction, and the tip metal fitting 6 of the jack 2 is pulled toward the bar-shaped main body 1 side. As a result, the top of the rod-shaped member P is drawn toward the rod-shaped main body 1 with the two points received by the end fittings 12 of the contact members 7A and 7B on both sides as fulcrums, so that the rod-shaped member P is linear. By pulling the tip metal fitting 6 of the jack 2 toward the rod-shaped main body 1 until it returns, the rod-shaped member P can be returned to its original linear shape by correcting the bending or bending deformation.
[0011]
After correcting the deformation of the rod-shaped member P and returning it to the original linear shape, the screw shaft 4 of the jack 2 is reversely rotated to return the tip metal fitting 6 in the direction away from the rod-shaped main body 1. Each end metal fitting 6 and 12 can be removed. In addition, what is necessary is just to adjust the space | interval of both the contact members 7A and 7B according to the length of the deformation | transformation area | region of the rod-shaped member P. FIG. In other words, the end fittings 12 of the both-contact members 7A and 7B are fitted to both ends of the deformation region of the rod-shaped member P (both ends of the rod-shaped member P when the rod-shaped member P is deformed over its entire length) or positions in the vicinity thereof. The sliding body 10 may be moved along the rod-shaped main body 1 with the fixing bolt 9 loosened so that the fixing bolt 9 is fastened after the position adjustment to fix the sliding body 10 to the rod-shaped main body 1. .
[0012]
In the apparatus shown as the reference example, the rod-shaped body 1 is disposed inside the curved or bent deformation portion of the curved or bent rod-shaped member P, and the deformed top portion of the rod-shaped member P is connected to the jack 2. The rod-shaped main body 1 is disposed outside the curved or bent deformation portion of the rod-shaped member P that is bent or bent and is bent. The deformation top of P can be cut by pressing it with the jack 2 and correcting it straight.
[0013]
That is, FIG. 4 shows a preferred embodiment of the present invention. As shown in FIG. 4, in the present invention, the rod-like main body 1 is attached to the tip fitting 6 of the jack 2 and the tip fitting 12 of the abutting members 7A and 7B. A rectangular hook-shaped engagement portion 20, 21 that engages with the rod-shaped member P toward a certain side, and a side opposite to the side where the rod-shaped main body 1 is disposed with respect to the hook-shaped engagement portion 20, 21 In addition, U-shaped engaging portions 22 and 23 that are engaged with the rod-shaped member P in a direction opposite to the side where the rod-shaped main body 1 is provided are provided.
[0014]
Thus, according to the configuration of the present invention, as shown in FIG. 1, the rod-shaped main body 1 is arranged inside the curved or bent deformation portion with respect to the curved or bent rod-shaped member P. When the deformed top portion of the rod-shaped member P is pulled straight by the jack 2 and straightened, the hook-shaped engaging portion 20 of the end fitting 6 of the jack 2 and the U-shape of the end fitting 12 of the both abutting members 7A and 7B are used. What is necessary is just to engage the engaging part 23 with the rod-shaped member P, and conversely, the rod-shaped main body 1 is arranged outside the curved or bent deformation portion with respect to the bent or bent rod-shaped member P. When the deformed top portion of the rod-shaped member P is pressed with the jack 2 to be straightened, the U-shaped engaging portion 22 of the end fitting 6 of the jack 2 and the hook of the end fitting 12 of the both abutting members 7A and 7B. The shape engaging portion 21 may be engaged with the rod-shaped member P.
[0015]
【The invention's effect】
The bar-shaped member distortion removing apparatus of the present invention can be implemented and used as described above. According to the apparatus of the present invention, the panel around the transportation carriage as shown in FIG. When correcting the bending or bending deformation of the bar-shaped member, the tip metal fitting of the jack is engaged with the deformation top of the bar-shaped member and the engaging portions of the contact members on both sides are engaged with the bar-shaped member. By operating the jack and pulling or pushing the end fitting, the deformation top of the rod-shaped member can be moved to the inside of the deformation with the point of engagement with the two abutting members as a fulcrum to return to the straight line shape. I can do it.
[0016]
That is, by using the device of the present invention, the bending or bending deformation of the bar-shaped member constituting the panel can be easily and simply corrected by simply operating the screw-type jack, and the deformed panel can be easily prototyped on site. Alternatively, it can be restored to a state close to that and used in a good-looking and safe manner. Moreover, according to the configuration of the present invention, when the peripheral frame of the panel is curved or bent inwardly, the device of the present invention is arranged outside the panel for correcting the deformation of the peripheral frame. Conversely, if the peripheral frame of the panel is curved or bent outward, or the vertical rails inside the peripheral frame are curved outward with respect to the surface of the panel Or, when it is bent and deformed, it is possible to easily perform the deformation correction work for the surrounding frame, the vertical rail and the like with the apparatus of the present invention arranged outside the panel. That is, when the rod-shaped member is deformed inward, the deformation of the rod-shaped member can be easily corrected with one device regardless of whether the rod-shaped member is deformed outward.
[0017]
In addition, according to the structure of Claim 2, the space | interval of a pair of contact member is changed according to the length of the deformation | transformation area | region of the rod-shaped member which should correct | amend a deformation | transformation, and the deformation | transformation correction | amendment work always efficiently Can be done.
[Brief description of the drawings]
FIG. 1 is a partially longitudinal side view showing a use state of a device as a reference example.
FIG. 2 is a longitudinal side view showing a screw jack of the apparatus.
FIG. 3 is a longitudinal side view showing a contact member of the apparatus.
4A and 4B are views showing an embodiment of the present invention, in which FIG. A is a vertical side view showing a contact member, and FIG. B is a vertical side view showing a screw-type jack.
5A is a left side view showing an example of a transport carriage, FIG. B is a front view thereof, FIG. C is a right side view thereof, and FIG. 5D is a rear view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rod-shaped main body using a square pipe 2 Screw type jack 4 Screw shaft 5 Handle bar 6 Tip metal fittings 7A and 7B Abutting members 8, 20, and 21 Hook type engaging part 9 Fixing bolt 10 Sliding body 11 Strut member 12 Tip metal fittings 13 and 22 , 23 U-shaped engaging portion 33 to 35 Panel 38 Perimeter frame 40 Vertical beam P Bar-shaped member to be corrected

Claims (2)

It consists of 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 so as to sandwich the jack, and moves in a perspective direction with respect to the rod-shaped main body of the jack The tip metal fitting and the tip metal fitting of the pair of abutting members include a hook-shaped engagement portion that engages with the rod-shaped member toward the side with the rod-shaped main body, and a side with the rod-shaped main body with respect to the hook-shaped engagement portion. straightening device opposite to the side where a and rod-shaped body provided on the side and shaped engaging portion of the arc that engages the rod-like member at opposite is al provided, the rod-like member. The said pair of contact member is a distortion removal apparatus of the rod-shaped member of Claim 1 attached so that position change fixation is possible in the length direction of a rod-shaped main body .

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