JP2004210217A - Highest elevation positioning device of cargo receiving platform for cargo receiving platform lifter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highest elevation positioning device of a cargo receiving platform for a cargo receiving platform lifter which is capable of performing extensive adjustment at the highest elevated position without increasing the number of parts and excellent in strength. <P>SOLUTION: In the cargo receiving platform lifter 1 in which a cargo receiving platform 5 is elevated/lowered along a stay 3 via a slider 4, and the cargo receiving platform 5 is positioning-adjusted at the highest elevated position by a highest elevation positioning device 10, the highest elevation positioning device 10 comprises a fitting plate 11 which is attachably/detachably fitted to an upper portion of the stay 3, two holding members 12 and 13 which are provided on the fitting plate 11 and disposed with a predetermined space in the vertical direction, and an abutting member 15 which is provided on the holding members with the protrusion in the vertical direction adjustable and abutted on an upper end portion of the slider 4. The holding members 12 and 13 are disposed so that the distances from the center in the vertical direction of the fitting plate 11 are different from each other, and arranged on a pair of right and left stays 3 in an upside-down condition via the fitting plate 11. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a highest-lift positioning device for positioning a receiving table at a highest position in a receiving table lifting apparatus.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been provided a loading tray elevating device in which a loading tray is provided so as to be able to move up and down along a supporting column via a slider provided in a pair of right and left columns standing upright on a packing box of a vehicle.
[0003]
And in the loading tray elevating device which raises and lowers the loading tray along such a column, the most elevated positioning device which forcibly stops the lifting of the loading tray at the highest position where the loading tray is substantially flush with the loading tray is provided. Is provided.
[0004]
For example, a stopper bracket is provided at an upper portion of a column and a stopper bolt is provided at an upper end portion of a slider. When the slider is moved up to a highest position, the stopper bolt of the slider is attached to the stopper bracket. The abutment stops the cargo receiving table at the highest position via the slider. Further, by changing the screwing amount of the stopper bolt through the adjusting hole and adjusting the length of the slider projecting upward from the upper end, the highest position of the load receiving table is adjusted through the slider ( For example, see Patent Document 1.)
[0005]
[Patent Document 1]
JP 2002-114080 A
[Problems to be solved by the invention]
However, the above-described highest-rise positioning device has the following problems.
[0007]
The adjustment range for positioning the load receiving platform at the highest position depends on the length of the stopper bolt protruding from the upper end of the slider. However, if the stopper bolt is long, the strength becomes insufficient and buckling or breakage may occur. For this reason, the stopper bolt cannot be protruded too long, thereby narrowing the adjustment range.
[0008]
Therefore, if the adjustment range is narrow as described above, the stopper bracket must be mounted on the upper end portion of the column while changing the position so as to be suitable for each size of the vehicle on which the loading / unloading device is mounted. It was a factor complicating the bodywork.
[0009]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to raise and lower a receiving tray which can be widely adjusted at the highest position without increasing the number of parts and which has excellent strength. It is an object of the present invention to provide a device for elevating the position of a receiving table in a device.
[0010]
[Means for Solving the Problems]
The highest position device of the loading tray in the loading tray elevating device according to the first aspect of the present invention is arranged such that the loading tray moves along the supporting column via a slider provided in a pair of right and left columns standing upright on a carton of the vehicle. In a loading tray lifting device in which the loading tray is positioned and adjusted at the highest position by the highest positioning device, the highest positioning device can be removably attached to the upper part of the column. A mounting plate, and two holding members provided on the mounting plate and arranged at predetermined intervals above and below, and the holding members are provided such that the amount of protrusion in the vertical direction is adjustable, and the upper and lower ends of the slider are in contact with each other. The holding members are arranged so that the distances from the center of the mounting plate in the vertical direction are different from each other. Plates has been made positionable while upside down through.
[0011]
The highest position device of the loading tray in the loading tray elevating device according to the second aspect of the present invention is configured such that the contact member is screwable into the holding member, and is a contact bolt fixed at a predetermined projecting position. A buffer member is provided at a contact portion of a contact bolt contacting the slider.
[0012]
According to a third aspect of the present invention, the highest position device of the loading tray in the loading tray elevating device is configured such that the loading tray is moved along the supporting column via a slider provided in a pair of right and left columns standing upright on the carton of the vehicle. In a loading tray lifting device in which the loading tray is positioned and adjusted at the highest position by the highest positioning device, the highest positioning device can be removably attached to the upper part of the column. A mounting plate, two abutted members provided on the mounting plate and arranged at predetermined intervals above and below, and a vertically protruding amount provided at an upper end portion of the slider so as to be adjustable; A contact member that is in contact with one of the contact members, wherein each of the contact members is arranged so that the distance from the center in the vertical direction of the mounting plate is different from each other, and The pair of left and right strut has been made positionable while upside down through the mounting plate.
[0013]
According to a fourth aspect of the present invention, the highest position device of the loading tray in the lifting device of the loading tray is configured such that the contact member is screwed into an upper end portion of the slider and fixed at a predetermined projecting position. The cushioning member is provided at the contact portion of the contact bolt contacting the contacted member.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
FIG. 1 shows a loading tray elevating device.
[0016]
The loading tray elevating 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. 2) inserted into the columns 3 so as to be able to move up and down, respectively. The slider 4 includes a load receiving table 5 supported at a lower end of the slider 4 and a lifting cylinder 7 connected to each slider 4 via a wire 6.
[0017]
Specifically, the column 3 is formed of a hollow elongated body having a rectangular cross section, and a slider 4 is disposed inside the column. As shown in FIG. 2, the slider 4 is provided with an elevating roller 41 at the upper end and an intermediate part thereof, and the elevating roller 41 allows the slider 4 to move up and down smoothly.
[0018]
One end of each wire 6 is fixed to the upper end of each of the right and left sliders 4. The wire 6 is guided upward from the slider 4, is folded downward by a sheave 31 provided on the upper portion of the support 3, and is guided downward on the front side, and is then sheave from the lower portion of the front support 3 (not shown). And the other end thereof is appropriately fixed.
[0019]
The elevating cylinder 7 is arranged at the front part in the cross member 8 arranged between the columns 3 as shown in FIG. 1, and the wire 6 arranged as described above is moved by the expansion and contraction operation of the elevating cylinder 7. The slider 4 is raised and lowered by extending the slider 3 or pulling the slider 4 out of the pillar 3.
[0020]
The load receiving table 5 is provided with left and right brackets 42 projecting rearward from the lower end of each slider 4, both ends of which are supported by a horizontal shaft 51, and an upright position ((storage state) in which it stands up along the column 3; A notch groove 33 (see FIG. 1) is formed in the rear wall 32 of the column 3 in the up-down direction, and the left and right brackets 42 are arranged in the substantially horizontal position (working state). It is arranged to protrude rearward from the column 3 through the groove 33.
[0021]
Therefore, by moving the slider 4 up and down by the lifting cylinder 7 as described above, the loading table 5 connected to the slider 4 is maintained in a horizontal state, and the lifting and lowering operation is performed between the ground and the floor of the packing box 2. Can be done.
[0022]
By the way, as shown in FIG. 2, the loading pallet lifting device 1 configured as described above has the highest lift for forcibly stopping the lifting of the loading cradle 5 when the loading cradle 5 reaches the highest position. A positioning device 10 is provided.
[0023]
As shown in FIGS. 3 to 5, the highest-rise positioning device 10 includes a mounting plate 11 that is detachably mounted on an upper portion of the column 3, two holding members 12 and 13 provided on the mounting plate 11, The holding members 12 and 13 are provided with a contact bolt 15 (see FIG. 2) serving as a contact member which is screwed into the holding members 12 and 13 so that the amount of protrusion in the vertical direction can be adjusted.
[0024]
As shown in FIG. 2, the mounting plate 11 is a flat plate formed in a rectangular shape corresponding to the front-rear width of the column 3, and four corners of the column 3 are screwed to the opening 3a formed in the upper outer surface of the column 3. It is attached detachably.
[0025]
As described above, the holding members 12 and 13 are vertically spaced apart from each other on the inner side surface of the mounting plate 11 facing the inside of the support column 3 via the connecting member 14 when the mounting plate 11 is mounted on the support column 3. It is arranged. Each of the holding members 12 and 13 is formed of a nut member in which a screw hole (only the screw hole 13a of the holding member 13 is shown in FIG. 5) is vertically formed.
[0026]
As shown in FIG. 6, the contact bolt 15 has a contact portion 17 provided on a head 16a of a bolt member 16, and a threaded rod portion 16b of the bolt member 16 is screwed into a screw hole of the holding member 12. It has been made possible. Therefore, as shown in FIG. 4, in a state where one holding member 12 is located below, the screw portion 16 b is screwed into the holding member 12 by a predetermined amount from below with the contact portion 17 being downward, and is fixed with the nut 15 a. Thus, the contact portion 17 can be disposed in a state of protruding downward from the holding member 12 (see FIG. 2).
[0027]
Since the contact bolt 15 is screwed into the holding member 12 in this manner, the length of the contact portion 17 protruding from the holding member 12 can be made variable by adjusting the screwing amount.
[0028]
The contact portion 17 is a portion that comes into contact with the upper end portion of the slider 4 when the mounting plate 11 is mounted on the column 3, and an elastic member 17a such as rubber as a cushioning member is connected to the head 16a via a support member 17b. It is screwed to.
[0029]
Here, the two upper and lower holding members 12 and 13 described above are provided on the mounting plate 11 in the following state.
[0030]
Assuming that the center in the vertical direction of the mounting plate 11 is the center L in the state shown in FIG. 4, the holding member 12 is disposed at a position below the distance L1 with respect to the center L, and the holding member 13 is positioned with respect to the center L. At a position above the distance L2. The distance L1 and the distance L2 are set in advance so that the distance L2 is longer than the distance L1 by a predetermined length.
[0031]
The connecting member 14 of the mounting plate 11 not only attaches the holding members 12 and 13 as described above, but also serves as a portion that rotatably supports the sheave 31. Specifically, as shown in FIG. 5, the connecting member 14 has two plate portions 14a and 14b parallel to the mounting plate 11, and the sheave 31 is disposed between the plate portions 14a and 14b. , Are rotatably supported by support pins 31a (see FIG. 2) inserted into through holes 14c and 11b formed in a straight line in the plate portions 14a and 14b and the mounting plate 11, respectively.
[0032]
The uppermost positioning device 10 described above is provided on the left column 3 in FIG. 1, and the right column 3 is mounted on the right column 3 with the uppermost positioning device 10 and the leftmost column (not shown). ).
[0033]
Next, a description will be given of the positioning adjustment of the loading table 5 at the highest position by the highest positioning device 10 configured as described above.
[0034]
First, when the ascending positioning device 10 is mounted on the left column 3 shown in FIG. 1 as shown in FIG. 2, the holding member 12 is on the lower side, and the contact bolt 15 is attached to the holding member 12. It is mounted and fixed by the nut 15a as described above. As a result, when the load receiving table 5 is raised to a predetermined height by the lifting of the slider 4, the upper end of the slider 4 comes into contact with the contact portion 17 of the contact bolt 15, and the load receiving table 5 is forced through the slider 4 at this position. By stopping the upward movement, the highest position of the loading tray 5 is determined.
[0035]
Therefore, by adjusting the screwing amount of the contact bolt 15 into the holding member 12, that is, the vertical position of the contact portion 17 of the contact bolt 15 projecting downward from the holding member 12, the slider 4 comes into contact within the range. The height position can be adjusted, and thereby the highest position of the loading tray 5 can be adjusted.
[0036]
A right-most column 3 shown in FIG. 1 is provided with a bilaterally symmetrical top-end positioning device that is symmetrical to the above-mentioned top-end positioning device 10. That is, the mounting plate 11 is mounted with the holding member 12 on the lower side, and positioning can be performed while adjusting the highest position of the load receiving table 5 by the contact bolt 15 as described above.
[0037]
Next, when the adjustment by the contact bolt 15 as described above cannot adjust the highest position of the load receiving table 5, that is, the position below the adjustment range by the holding member 12 and the contact bolt 15 as described above. If it becomes necessary to adjust the highest position of the load receiving table 5 in this way, the adjustment is performed by attaching the highest position positioning device 10 as follows.
[0038]
First, the uppermost positioning device 10 attached to the left column 3 in FIG. 1 is mounted upside down on the right column 3 while the uppermost positioning device 10 attached to the right column 3 is similarly turned upside down. Turn it upside down and attach it to the left column 3. As a result, as shown in FIG. 7, the ascending positioning device 10 is disposed with the holding member 13 at the lower side in the column 3 (the left column), and the contact bolt 15 is attached to the holding member 13 as described above. Install in the same way. Similarly, the uppermost positioning device 10 is disposed on the right column 3 with the holding member 13 on the lower side.
[0039]
When the highest positioning device 10 is mounted as described above, the holding member 13 is disposed below the holding member 12 with respect to the center L of the mounting plate 11 in the vertical direction. That is, since the holding member 13 is disposed longer than the holding member 12 by the distance L2 to the distance L1 with respect to the center L, the left and right uppermost positioning devices 10 are turned left and right and upside down as described above. By arranging, the holding member 13 is arranged at the lower portion in the upper part in the column 3 by this amount.
[0040]
Therefore, by adjusting the amount of protrusion of the contact bolt 15 with reference to the holding member 13, it is possible to adjust the protruding amount of the contact bolt 15 at a position further lower than the case where the highest position is adjusted by the holding member 12 and the contact bolt 15. The highest position of the receiving table 5 can be adjusted.
[0041]
In this way, by replacing the left and right uppermost positioning devices 10 and 10 with respect to the left and right columns 3 and 3, it is possible to secure a long range for adjusting the uppermost position of the load receiving table 5 due to the restriction of the slider 4 being raised. it can.
[0042]
Accordingly, even when the loading / unloading device 1 is mounted on a vehicle having a different size, it is possible to adjust the highest position of the loading device 5 by using the highest positioning device 10 within the above adjustment range. Therefore, since the mounting work can be easily performed without increasing the number of parts, the total manufacturing cost can be reduced.
[0043]
Moreover, by changing the height position of the holding members 12 and 13 by replacing the mounting plate 11, the adjustment range can be expanded without making the contact bolts 15 attached to the holding members 12 and 13 too long. Therefore, it is possible to prevent a decrease in strength due to an increase in the length of the threaded rod portion 16b of the contact bolt 15, and to expand the above adjustment range while ensuring sufficient strength.
[0044]
In the present embodiment, a description has been given of a case where the contact bolt 15 is provided on the holding members 12 and 13 as the highest-rise positioning device. The contact bolt 15 may be provided at the upper end of the slider 4.
[0045]
In this case, the height position of the contact portion 17 is provided at the upper end of the slider 4 by screwing the contact bolt 17 with the contact portion 17 upward, and the holding members 12 and 13 described above are attached. What is necessary is just to be a contacted member which the contact part 17 contacts. In other words, the mounting plate 11 and the holding members 12 and 13 described above can be diverted as they are and mounted on the column 3, or the contact members without screw holes can be used instead of the holding members 12 and 13. What is necessary is just to provide so that the same positional relationship as may be obtained.
[0046]
By configuring the highest-rise positioning device in this way, the same effect as the above-described highest-rise positioning device 10 can be obtained.
[0047]
【The invention's effect】
As described above, according to the device for elevating the loading tray in the loading tray lifting device of the present invention, the holding members or the abutted members are arranged so that the distances from the vertical center of the mounting plate are different from each other. In addition, the pair of left and right supports can be arranged upside down via a mounting plate, so that the work can be easily performed without increasing the number of parts, and the overall manufacturing cost can be reduced. While ensuring sufficient strength, it is possible to expand the adjustment range at the highest position of the loading tray.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an overall schematic configuration of a loading tray elevating device.
FIG. 2 is a side view showing a highest-rise positioning device attached to a column.
FIG. 3 is a front view showing a mounting plate and a holding member.
FIG. 4 is a view taken in the direction of arrow A in FIG. 3;
FIG. 5 is a sectional view taken along line BB in FIG. 3;
FIG. 6 is a side view showing a contact bolt.
FIG. 7 is a side view showing a state when the highest positioning device is replaced between left and right columns.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 loading tray lifting device 2 loading box 3 support 4 slider 5 loading tray 10 highest positioning device 11 mounting plate 12 holding member 13 holding member 15 contact bolt 17 contact portion 17a elastic member (buffer member)

Claims (4)

A load receiving table is provided so as to be able to move up and down along the support columns via sliders provided in a pair of right and left columns standing upright on the carton of the vehicle, and the load receiving table is positioned at the highest position by the highest positioning device. In the adjustable loading / unloading device,
The highest-rise positioning device,
A mounting plate that can be detachably mounted on the upper portion of the support,
Two holding members provided on the mounting plate and arranged at predetermined intervals above and below,
The holding members are provided such that the amount of protrusion in the vertical direction is adjustable, and include a contact member that contacts an upper end portion of the slider,
Each of the holding members is arranged so that the distance from the center of the mounting plate in the vertical direction is different from each other, and the holding members can be arranged on the pair of left and right supports upside down via the mounting plate. A highest position positioning device for a loading tray in a loading tray elevating device. The contact member is made of a contact bolt that can be screwed into the holding member and is fixed at a predetermined projecting position, and a buffer member is provided at a contact portion of the contact bolt that contacts the slider. 2. A device for positioning the highest position of a loading tray in the lifting device of the loading tray according to claim 1. A load receiving table is provided so as to be able to move up and down along the support columns via sliders provided in a pair of right and left columns standing upright on the carton of the vehicle, and the load receiving table is positioned at the highest position by the highest positioning device. In the adjustable loading / unloading device,
The highest-rise positioning device,
A mounting plate that can be detachably mounted on the upper portion of the support,
Two abutted members provided on the mounting plate and arranged at predetermined intervals vertically;
An upper end portion of the slider is provided such that the amount of protrusion in the vertical direction is adjustable, and includes a contact member that contacts one of the contacted members,
Each of the abutted members is arranged so that the distance from the center of the mounting plate in the vertical direction is different from each other, and can be arranged on the pair of left and right columns with the mounting plate upside down via the mounting plate. A highest position positioning device for a loading tray in a loading tray elevating device. The contact member is formed of a contact bolt which can be screwed into the upper end of the slider and is fixed at a predetermined projecting position, and a buffer member is provided at a contact portion of the contact bolt which contacts the contact member. 4. The device for positioning the highest position of the receiving tray in the lifting device of the receiving tray according to claim 3, which is provided.

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