JP2006027451A - Maximum elevated positioning device for receiving load platform of receiving load platform elevating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow performing the adjusting operation of a stopper adjusting means efficiently and conduct the height adjustment of a receiving load platform easily and quickly. <P>SOLUTION: A maximum elevated positioning device for a receiving load platform of a receiving load platform elevating device is equipped with a pair of left and a right column installed upright on the load box side of a vehicle, a sheave to admit winding thereon of a wire to elevate and lower the receiving load platform through a slider installed inside the columns, a holding mechanism to hold the sheave on the columns, and the stopper adjusting means to make location of the receiving load platform in the elevated position, wherein the columns are each furnished with an opening to allow the holding mechanism to be installed inside the columns, and a mounting plate to block the openings with possibility of being opened and closed is detachably attached to the columns, and the stopper adjusting means is mounted on the mounting plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a highest ascending positioning device for positioning a cargo receiving base at a highest ascent position in a cargo receiving base lifting device.

  2. Description of the Related Art Conventionally, there is provided a load receiving table lifting device in which a load receiving table is provided so as to be able to move up and down along the support column via a slider provided in a pair of left and right support columns standing on a cargo box of a vehicle. In the load receiving platform lifting device that lifts and lowers the load receiving table along such a support column, the highest lifting positioning device for forcibly stopping the lifting of the load receiving table at the highest rising position where the load receiving table is substantially flush with the load receiving table. Is provided.

  As the most elevated positioning device, for example, a stopper bracket is provided at the top of the support column and a stopper bolt is provided at the upper end of the slider. When the slider is raised to the highest position, the stopper bolt of the slider is used as the stopper bracket. The load receiving platform is stopped at the highest position through the slider.

In addition, the maximum height of the load receiving platform can be adjusted via the slider by changing the screwing amount of the stopper bolt through the adjustment hole formed in the column and adjusting the protruding length upward from the upper end of the slider. (For example, refer to Patent Document 1).
JP 2002-1114080 A

  In the conventional load receiving platform lifting device, when adjusting the highest lift position of the load receiving stand, the stopper bolt in the support column adjusts the distance between the stopper bracket and the slider through the adjustment hole of the support column. There was a problem that the work could not be done easily and quickly.

  This invention is made | formed in view of the said problem, and makes it a subject to make it possible to adjust the height of a receiving stand easily and rapidly.

  The present invention has been made in order to solve the above-described problem, and includes a pair of left and right columns that are erected on the cargo box side of a vehicle, and a wire that raises and lowers the load receiving table via a slider provided in the column. A sheave to be wound, a holding mechanism for holding the sheave on the column, and a stopper adjusting means for positioning the load receiving base at the raised position, the column can be attached to the holding mechanism inside the column. An opening is formed, and an attachment plate that closes the opening so as to be freely opened and closed is detachably attached to the column, and the stopper adjusting means is provided on the attachment plate.

  The holding mechanism includes a sheave bracket fixed in a support column, a sheave around which the wire is wound, and a sheave cover attached to the sheave bracket so as to support the sheave by the sheave bracket. .

  It is preferable that the stopper adjusting means includes a contact bolt that contacts the slider from above, and the contact bolt is screwed into the mounting plate so as to be retractable.

  According to the present invention, the adjustment operation of the stopper adjusting means can be performed efficiently, and the height adjustment of the load receiving platform can be performed easily and quickly.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 shows the load receiving table lifting device. The load receiving platform lifting / lowering device 1 includes a pair of left and right columns 3 erected at the rear end of a cargo box 2 of a vehicle, sliders 4 (see FIG. 1) inserted in the columns 3 so as to freely move up and down, The load receiving platform 5 is supported at the lower end of the slider 4 and the lifting cylinder 7 is connected to each slider 4 via a wire 6.

  As shown in FIGS. 3 to 5, each column 3 has a main column 31 made of a hollow long body (square pipe) having a rectangular cross section, and a cross-section core fixed to the main column 31 by welding or the like. It is comprised from the auxiliary | assistant support | pillar 32 of the character shape. The slider 4 is disposed inside the main column 31. As shown in FIG. 1, the slider 4 is provided with elevating rollers 41 a and 41 b at its upper end and midway, respectively, and the elevating rollers 41 a and 41 b roll on the inner surface of the main column 31 to raise and lower the slider 4. I try to move smoothly.

  One end portions of the wires 6 are fixed to the upper end portions of the left and right sliders 4 via connecting portions 43, respectively. The wire 6 is guided upward from the slider 4, folded downward by a holding mechanism 50 provided on the upper portion of the support 3, and guided downward on the front side, and then sheaves (not shown) from the lower portion of the front support 3. ) And the other end is appropriately fixed.

  The elevating cylinder 7 is disposed in a cross member 8 disposed between the support columns 3, and the wire 6 disposed as described above is extended to the support column 3 by the elevating operation of the elevating cylinder 7, or from the support column 3. By pulling in, the slider 4 is moved up and down.

  The load receiving platform 5 is supported by horizontal brackets 42a at left and right brackets 42 projecting rearward from the lower ends of the sliders 4 and supported by a horizontal shaft 42a. It can be placed in a horizontal position (working state). A notch groove 33 (see FIG. 1) is formed in the rear wall 31a of the main column 31 in the vertical direction, and the left and right brackets 42 are inserted through the notch groove 33 and protruded rearward from the main column 31. Yes.

  As shown in FIGS. 5 and 6, the holding mechanism 50 includes a sheave bracket 51, a sheave cover 52, and a sheave 53. The sheave bracket 51 is formed of a metal plate, and includes a main body portion 55 that is a bottom portion, upper and lower upright portions 56 and 57 that are bent in parallel with each other from the upper and lower ends of the main body portion 55, and upward from the upper upper portion 56. The upper mounting portion 58 is bent and the lower mounting portion 59 is bent downward from the lower standing upper portion 57. The main body 55 is fixed to the upper inner surfaces of the main column 31 and the auxiliary column 32 by welding or the like. A spacer 34 is interposed in a portion corresponding to the auxiliary column 32 of the main body.

  A shaft 54 is fixed to the sheave cover 52, and this shaft 54 is inserted into a boss portion 55 a fixed to the sheave 53 and the main body portion 55, thereby rotatably supporting the sheave 53. The upper and lower ends of the sheave cover 52 are detachably fixed to the upper and lower mounting portions 58 and 59 of the sheave bracket 51 with bolts 45.

  An opening 35 is formed on one side wall of the main column 31 and the auxiliary column 32 where the holding mechanism 50 is located. In this embodiment, the case where the opening 35 is formed on the outer wall side of the main support column 31 and the auxiliary support column 32 is illustrated. The opening 35 has a size and shape that can fix the sheave bracket 51 to the main support column 31 and the auxiliary support column 32 by welding or the like, and can fix the sheave 53 and the sheave cover 52 around which the wire 6 is wound to the sheave bracket 51. Is set to Therefore, the holding mechanism 50 can be easily assembled into the support column 3 through the opening 35.

  The load receiving table lifting / lowering device 1 configured as described above is provided with the highest lift positioning device 10 for forcibly stopping the lift of the load receiving stand 5 when the load receiving stand 5 reaches the highest lift position. . As shown in FIGS. 3 to 5, the most elevated positioning device 10 is provided with a mounting plate 11, a holding member 12 provided on the inner surface of the mounting plate 11 and facing the inside of the column 3, and the mounting plate 11 and the holding member 12. An L-shaped reinforcing rib 13 fixed therebetween and a contact bolt 15 as stopper adjusting means are provided.

  The mounting plate 11 is made of a metal flat plate formed in a rectangular shape, and the four corners are connected to the main column 31 and the auxiliary column 32 by bolts 19 so as to close the opening 35 formed on the upper outer surface of the column 3. It is detachably attached.

  The contact bolt 15 has a contact portion 17 provided at the lower end of the bolt member 16. The bolt member 16 can be screwed into a screw hole 12a formed through the holding member 12 in the vertical direction. Accordingly, the abutting portion 17 is set downward and the bolt member 16 is screwed into the holding member 12 from the lower side by a predetermined amount and fixed with the nut 15a, so that the abutting portion 17 is disposed in a state of protruding downward from the holding member 12. Can do.

  Since the contact bolt 15 is screwed into the holding member 12 in this way, the length of the contact portion 17 protruding from the holding member 12 can be varied by adjusting the screwing amount. The contact portion 17 is a portion that contacts the upper end portion of the slider 4 from above, and an elastic member such as rubber as a buffer member is screwed thereto.

  Next, the operation of the load receiving table lifting apparatus 1 configured as described above will be described. The left and right sliders 4 are raised via the wires 6 by the operation of the elevating cylinder 7. When the load receiving platform 5 rises to a predetermined height due to the rise of the slider 4, the upper ends of the left and right sliders 4 abut against the abutment portions 17 of the abutment bolts 15 of the highest ascending positioning device 10 attached to each column 3. . For this reason, the highest ascending position of the load receiving platform is determined by forcibly stopping the load receiving platform 5 via the slider 4 at this raised position.

  Next, positioning adjustment of the load receiving platform 5 by the highest ascending positioning device 10 will be described. First, each bolt 19 is loosened, and the mounting plate 11 is removed from the column 3 (see FIG. 4). At this time, the wire 6 is held by the sheave 53 of the holding mechanism 50 fixed to the column 3 side. Thus, in the state where the wire 6 is wound around the sheave 53 supported on the support column 3 side, the vertical position of the contact portion 17 of the contact bolt 15 fixed to the mounting plate 11 separated from the support column 3 is adjusted. To do. That is, the nut 15 a that fixes the contact bolt 15 is loosened, and the contact bolt 15 is rotated to advance or retract relative to the holding member 12, thereby adjusting the vertical position of the contact portion 17. The contact bolt 15 can be adjusted easily and quickly with the mounting plate 11 separated from the support column 3 regardless of the wire 6 and the sheave 53.

  After the position of the contact bolt 15 is set, the contact bolt 15 is again inserted into the support column 3 and the bolt 19 is fastened to the support column 3 to reattach the mounting plate 11 to the support column 3 side. Further, when the load receiving platform 5 is raised by the raising of the slider 4, the upper end portion of the slider comes into contact with the contact portion of the adjusted contact bolt, and the highest lift position of the load receiving platform can be adjusted.

  Further, when the length of the wire 6 is adjusted due to the looseness of the wire 6, the mounting plate 11 is removed, and the bolt 45 that fixes the sheave cover 52 to the sheave bracket 51 is removed from the opening 35. Since the sheave cover 52 and the sheave 53 can be removed, the connecting portion 43 between the slider 4 and the wire 6 can be easily adjusted.

  In addition, since the mounting plate 11 closes the opening 35, foreign matter such as dust can be prevented from entering from the opening 35. Moreover, since the contact bolt 15 is provided on the mounting plate 11 that closes the opening 35 for assembling the holding mechanism 50, another opening is provided at a position unrelated to the position of the holding mechanism 50. Compared with the case where the mounting plate 11 closes, the number of openings can be reduced, and the number of processing steps can be reduced.

  The present invention is not limited to the embodiment described above. For example, in the above-described embodiment, the attachment plate 11 is detachably attached to the support column 3 in addition to a configuration in which the attachment plate 11 can be completely separated from the support column 3. It may be the configuration. Even in this case, it is possible to arrange the contact bolt 15 outside the support column 3 at the time of adjustment.

It is a side view including the partial fracture | rupture which shows the highest ascending positioning apparatus attached to the support | pillar of the load receiving stand raising / lowering apparatus of one embodiment of this invention. It is a perspective view which shows schematic structure of the whole. It is a side view including the partial fracture | rupture which shows the state which attached the same attachment plate to the support | pillar. It is a side view including the partial fracture | rupture which shows the state which removed the attachment plate from the support | pillar. It is an AA arrow directional cross-sectional view in FIG. FIG. 6 is a cross-sectional view taken along line B-B in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cargo stand raising / lowering device 2 Cargo box 3 Support | pillar 4 Slider 5 Cargo stand 10 The highest raising positioning device 11 Mounting plate 15 Contact | abutting bolt (stopper adjustment means)
35 Opening 50 Holding Mechanism 51 Sheave Bracket 52 Sheave Cover 53 Sheave

Claims (3)

A pair of left and right support columns erected on the cargo box side of the vehicle, a holding mechanism around which a wire for raising and lowering the load receiving table is wound via a slider provided in the support column, and positioning the load receiving table at the raised position In the highest ascending positioning device of the load receiving table in the load receiving table lifting device provided with the stopper adjusting means,
An opening for attaching the holding mechanism to the inside of the support is formed in the support, and a mounting plate that can be opened and closed is removably attached to the support. A maximum lift positioning device for a load receiving platform in a load receiving platform lifting device, characterized in that a stopper adjusting means is provided. The said holding | maintenance mechanism is equipped with the sheave bracket fixed in a support | pillar, the sheave around which the said wire is wound, and the sheave cover attached to a sheave bracket so that the said sheave may support the said sheave. The highest rising positioning device of the load receiving table in the load receiving table lifting and lowering device. The said stopper adjustment means consists of a contact | abutting bolt contact | abutted to the said slider from the top, This contact | abutting bolt is screwed in the attachment plate side so that withdrawal / retraction is possible, The load receiving base raising / lowering of Claim 1 or 2 The highest ascending positioning device of the cargo cradle in the device.

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