JP5043348B2 - Zinc plating pallet for multilevel parking - Google Patents

Description

  The present invention relates to a zinc plating pallet for a multi-story parking lot, which is made of a thick-walled steel panel and subjected to hot dip galvanizing.

  This kind of galvanized pallet for parking lots is generally equipped with a central ridge that is bent and raised from the surface in the width direction in the center in the width direction. Yield due to significant strain deformation at the end of the pallet in the longitudinal direction, especially at the central ridge or the tire running plate, which is considered to be caused by the temperature difference during the pulling from the molten zinc plating tank. In order to eliminate the decrease in the yield of zinc plating in the tendency that the surface treatment of the pallet is shifted to spray coating that requires maintenance and zinc plating is not used, Surfaces through side frames on both sides in the width direction, a pair of tire traveling plates disposed on both ends in the width direction between the side frames, and leg portions that are bent and raised in a belt-like manner on both sides of the intermediate position between the side frames. Placed on the surface A central ridge formed by a gently sloping surface with an inverted V-shaped cross section that has a wide band in the hand direction and has a center in the width direction as a peak position and is gently inclined from the peak position to both sides in the width direction. Four beams in the longitudinal direction, which are in contact with the bottom surface in a non-contact state with the central ridge in the middle and are welded to the side frames on both sides in the width direction and arranged to intersect, and the central ridge between the intermediate beams in the longitudinal direction And a pair of reinforcing plates in the width direction symmetrically arranged in the width direction intermediate position by being intermittently welded at a predetermined pitch to the back surface of the gently inclined surface having an inverted V-shaped cross section and standing vertically downward in the longitudinal direction. A symmetric pallet has been proposed in which the thickness of the reinforcing plate and the beam is within twice the thickness of the steel plate panel.

Japanese Patent No. 3614842

  With this pallet structure, it is possible to completely eliminate the distortion of the central ridge including the longitudinal end due to the zinc plating or the distortion in the vicinity thereof. At the same time, it has attracted attention as an opportunity to revive zinc plating that does not require maintenance.

  However, on this pallet, this tire pallet crosses the tire traveling plate, which can be recognized by a slight gaze in the plane of the middle position in the longitudinal direction of the tire traveling plate having flat surfaces located on both sides of the central ridge. In-plane distortion may occur at a plurality of locations. This in-plane distortion is determined to such an extent that, for example, when the tire traveling plate is viewed from an oblique direction so as to receive light reflection on the end in the longitudinal direction, the reflection of light is visually observed to be distorted. Therefore, it does not cause product defects or reduce yield, but the high quality due to zinc plating is seen from the fact that the central ridge or the distortion around it has been eliminated. It is desirable to solve this point in order to provide a simple pallet.

  The present invention has been made in view of such circumstances, and the problem to be solved is to eliminate the slight in-plane distortion generated in the tire running plate of the pallet in which the distortion of the central ridge is eliminated and to achieve a high-quality three-dimensional. To provide zinc-plated pallets for parking lots.

  As a result of diligent examination along the above-mentioned problems, in the pallet in which the central ridge or the distortion in the vicinity thereof has been eliminated, the tire traveling plate is gently inclined depending on the angle and arranged in an inverted V-shaped cross section symmetrically in the width direction. By forming a surface and arranging the above-mentioned gentle slope with a low elevation on the top surface of the pallet, the drainage of the tire traveling plate is secured, and a number of beams crossing the back surface are processed. The complexity and possibility of distortion recurrence due to the processing can be avoided, and the inclination angle of the gentle inclination is in the range of 3 ± 1 ° with respect to the horizontal plane (the inner angle of the central peak portion is 176 to 178 °). Thus, when the inclination angle is less than 2 °, in-plane distortion of the tire traveling plate that tends to generate a slight distortion is prevented, and when the inclination angle exceeds 4 °, the vehicle is particularly heavy. A trend arises The present invention has been obtained with the knowledge that it can be a high-quality pallet that prevents tire squeaking noise when entering and leaving the vehicle, and reliably prevents both in-plane distortion and squeaking noise. That is, the invention according to claim 1 is inclined in a belt-like manner on the side frames on both sides in the width direction, a pair of tire traveling plates disposed on both ends in the width direction between the side frames, and on both sides of the intermediate position between the side frames. In the form of a wide belt with a full length in the longitudinal direction that floats on the surface via bent upright legs, the center in the width direction is the peak position, and the inclined surface has an inverted V-shaped cross section that is gently inclined from the peak position to both sides in the width direction. The central ridges formed and four beams in the longitudinal direction which are arranged in contact with the bottom surface in the non-contact state with the central ridges in the longitudinal direction at both ends and in the middle in the longitudinal direction and welded to the side frames on both sides in the width direction. And the central ridge between the longitudinal intermediate beams And a pair of reinforcing plates in the width direction symmetrically arranged in the width direction intermediate position by being intermittently welded with a predetermined pitch to the back surface of the surface-inverted V-shaped gently inclined surface and extending vertically downward in the longitudinal direction. In the pallet in which the thickness of the reinforcing plate and the beam is symmetrical in the width direction so that the thickness of the steel plate is less than twice the thickness of the steel plate panel, and the galvanizing treatment is performed by immersion in a hot dip galvanizing tank, Similarly, between the frame and the central upright strip, the center in the width direction is the peak position, and it is formed by a slanting surface symmetric in each width direction that is gently inclined from the peak position to both sides in the width direction and is raised in an inverted V shape in cross section. When the angle of the inclined surface is set to an angle of 3 ± 1 ° with respect to the horizontal plane, in-plane distortion of the tire traveling plate during the zinc plating treatment and generation of tire squeaking noise during vehicle entry / exit It is to prevent those which the parking structure for galvanizing pallet, characterized in.

  The present invention uses each of these as the gist of the invention as means for solving the above problems.

  Since the present invention is configured as described above, the invention according to claim 1 is a pallet in which the distortion of the central ridge or its vicinity is eliminated, and the tire traveling plate is gently inclined at a small angle in the width direction. By forming a symmetrically arranged inclined surface and arranging the above-mentioned gentle inclination with a low elevation on the upper surface of the pallet, the drainage of the tire traveling plate is ensured, and a large number of beams crossing the back surface are provided. The trouble of processing the receiving part and the possibility of distortion recurrence due to the processing can be avoided, and the inclination angle of the gentle inclination is in the range of 3 ± 1 ° with respect to the horizontal plane (inner angle of the central peak portion) 176 to 178 °), if the inclination angle is less than 2 °, in-plane distortion of the tire running plate that tends to cause a slight distortion is prevented, and if it exceeds 4 °, Especially heavy cars It is possible to provide a high-quality galvanized pallet for a multi-level parking garage that prevents tire squeaking noises when entering and leaving the vehicle, which tend to occur on both sides, and reliably prevents both in-plane distortion and squeaking noise.

The present invention will be described in more detail below with reference to the examples of the drawings. A is used for a multilevel parking garage, and a high degree of corrosion resistance is ensured by performing a zinc plating treatment by immersion in a molten zinc plating tank. A zinc-plated pallet that does not require maintenance such as repainting every few years when it is painted. The pallet A is arranged on both side frames in the width direction and on both ends in the width direction between the side frames 1. A pair of tire traveling plates 2 and a longitudinally extending full length wide band formed on the surface via a leg 3 which is inclined in a belt shape and bent upright on both sides of the intermediate position between the side frames, and has a peak at the center in the width direction. A central ridge 4 formed by a gently inclined surface having a reverse V-shaped cross section that is gently inclined from the peak position to both sides in the width direction, and a bottom surface in a non-contact state with the central ridge at both longitudinal ends and in the middle in the longitudinal direction. Contact with the above width The four beams 5 in the longitudinal direction welded to the side frames on both sides in the opposite direction and the beam 5 in the middle in the longitudinal direction and the back surface of the reverse V-shaped gently inclined surface of the central ridge 4 between the beams 5 in the middle in the longitudinal direction. A pair of reinforcing plates 6 symmetrically arranged in the width direction that are vertically arranged in the longitudinal direction at the intermediate position in the width direction by applying intermittent welding of the pitch, and the thickness of the reinforcing plate 6 and the beam 5 are set as described above. The steel sheet is symmetrical with respect to the width direction within twice the wall thickness of the steel panel.

  That is, in this example, the pallet A has a length of about 5 to 6 m and a width of about 2 m, and the tire running plates on both sides of the width of about 2 m are about 60 cm, which is less than 1/3 of the width, The central ridge is set to about 70 cm, which is a little more than 1/3 of the horizontal width. For example, a thick steel plate having a thickness of about 3 to 5 mm is pressed, and both ends in the width direction are raised, and about 5 cm on one side at the rising portion. The width is set to be a plane rectangle in which the side frames 1 on both sides are arranged to be symmetrical in the width direction.

  The central ridge 4 is wide from the surface of the pallet A so as to extend over the entire length in the longitudinal direction of the pallet A through the leg 3 that is steeply inclined, for example, about 45 degrees and bent upward with a width of about several centimeters. In the present example, the slant angle of the central ridge 4 is 5 ° with respect to the horizontal plane. It is set to about ° (the inner angle of the central peak portion is 175 °), and the peak position is placed at the center in the width direction of the pallet A, and the cross section is arranged in an inverted V shape symmetric in the width direction. Incidentally, the inclination angle of the gently inclined surface of the central ridge 4 is preferably in the range of 2 to 20 ° (178 to 160 ° as the internal angle of the central peak) with respect to the horizontal plane. When pulling up from the zinc plating tank, the central ridge 4 or its vicinity tends to be distorted, and in order to prevent distorted deformation, it is particularly 3 to 7 ° (the inner angle of the central peak portion is 177 to 173). °) is preferable. At this time, it is desirable that the leg 3 has an inclination angle of about 30 ° to 60 ° or less with respect to the horizontal plane, and if it exceeds these ranges, the central ridge 4 or the vicinity thereof will be distorted. A tendency tends to occur, and it is particularly preferable to set the angle to 40 ° to 50 °.

  The beam 5 is crossed by using a total of four in the longitudinal direction both ends and in the middle of the pallet A. In this example, the beam 5 is formed into a hollow pipe material, for example, a square or rectangular cross section. A hollow pipe material having a straight line with the same width as that of the pallet A is used. The crossing arrangement makes the beam 5 not in contact with the leg 3 and the central ridge 4 and in contact with the bottom surface of the pallet A. In this way, the welding is performed by welding to the side frames on both sides of the steel plate panel A in the width direction.

  The reinforcing plate 6 uses, for example, a pair of thin and long steel plates having a length of about ½ of the pallet A, and is disposed at the back surface position displaced from the center of the inclined surface 2 in the width direction of the central ridge 4 to the peak position side. Between the intermediate beams 5 of the pallet A so as to be symmetric in the width direction with respect to the peak position, the reinforcing plate 6 is erected downward in parallel and perpendicularly to the longitudinal direction of the pallet A. The standing arrangement is intermittently welded by performing tack welding-like main welding on the back surface of the pallet A. In this example, the intermittent welding is performed by, for example, welding a 3 cm long weld with a 20 cm long space. It is assumed that it was performed at a predetermined pitch so as to be opened. Incidentally, if the reinforcing plate 6 is welded over the entire length thereof by wire welding, it is necessary to use intermittent welding because it tends to cause distortion in the central ridge 4 or its vicinity when pulled up from the molten zinc plating tank. In addition, the intermittent welding may be made by alternately arranging the relatively short welds and the relatively long gaps in the longitudinal direction. The combination is preferably within about 30 cm, preferably within about 3.5 cm of the welding length, and within about 25 cm of the spacing space.

  At this time, the thickness of the beam 5 and the reinforcing plate 6 must be within twice the thickness of the steel plate panel. If the thickness exceeds twice the thickness of the steel plate panel of the pallet A, When pulling up from the hot dip galvanizing tank, the central ridge 4 or its vicinity tends to be distorted, and the thickness of the reinforcing plate 6 and the beam 5 is reduced to the pallet A, that is, the steel plate panel thickness. It should be equal to or less than about twice the thickness of the thickness, preferably about 1.5 times or less. In this example, the beam 5 is, for example, about 1.1 times the thickness of the steel plate panel of the pallet A, That is, the thickness is 3.2 mm, and the reinforcing plate is 1 time, that is, 3 mm.

  In the pallet A formed as described above, the pair of tire travel plates 2 is further formed between the side frame 1 and the central upright strip 4 in the same width direction from the peak position to both sides in the width direction. Are formed by a slanting surface symmetric in each width direction and having an angle of 3 ± 1 ° with respect to the horizontal plane (the peak portion at the center) As an inclination angle of 176 to 178 ° as an inner angle of the tire, the occurrence of in-plane distortion of the tire traveling plate at the time of the zinc plating treatment and the generation of tire squeaking noise at the time of entering and leaving the vehicle are thereby prevented. An in-plane strain that can be recognized by a slight gaze that may occur in the plane of the middle position in the longitudinal direction of the pair of tire traveling plates 2 of the pallet A from which the strain at the central ridge 4 at the end in the longitudinal direction or the vicinity thereof is eliminated. The occurrence of There the pallet A strain as high quality which can not be naked eye.

  In other words, the pair of tire traveling plates 2 are formed in a central bulge in which the cross section has an inverted V-shaped cross section by a gently inclined surface and the inclined angle of the gently inclined surface is 2 to 20 °. The range is 3 ± 1 ° with respect to the horizontal plane which is gentler than the angle of the strip 4, and is 3 ° in this example.

  At this time, the inclined surface of the integrated tire traveling plate having the inverted V-shaped cross section is subjected to the pressing process at the same time at the time of the pressing process, so that the peak is centered in the width direction of each tire traveling plate 2. At this position, the pallet A is formed so as to protrude low and upward at the same angle over the entire length in the longitudinal direction. At this time, the inclined surface can be arranged so as to protrude downward, for example, but if it protrudes downward, the four beams installed for preventing distortion of the central ridge 4 or the vicinity thereof. When the beam 5 intersects with the beam 5, it becomes necessary to take a measure such as arranging a notch portion so as to form a receiving portion of the beam 5, and the strength of the beam 5 is reduced to prevent distortion of the central ridge 4 or the vicinity thereof. By avoiding the possibility of impairing the effect, the above-mentioned upward direction eliminates the slight distortion of the tire traveling plate 2 at the same time as the beam 5 and the central ridge 4 by the beam 5 or the distortion preventing effect in the vicinity thereof. Moreover, it is made to be able to prevent rain water from accumulating on the tire traveling plate 2 in the same manner as the central ridge 4 by making it face upward at the same time.

  The inclination angle on the gently inclined surface is in the range of 3 ± 1 °. That is, when the tire traveling plate 2 is a flat surface like the conventional one, the above-mentioned slight in-plane distortion occurs, but when the inclination angle is less than 2 °, the above-described distortion tends to occur within the surface of the tire traveling plate 2. If wrinkles occur and the inclination angle exceeds 4 °, tire squeaking noise tends to occur especially in heavy vehicles. To prevent these, the inclination angle should be in the above range. It is as.

  The pallet A formed as described above extends over the entire surface of the pallet A including the in-plane of the tire traveling plate 2 even if the galvanizing process is performed by immersing in a hot dip galvanizing tank having a temperature of about 450 ° C. Therefore, the occurrence of distortion that can be visually observed can be prevented, and the pallet A can be made extremely high quality.

  In the figure, reference numeral 7 denotes a mounting plate made of steel for supporting columns that is welded and arranged on the side frame 6 in the pallet A of this example, 8 is a vehicle stopper mounting material that is also welded and arranged on the surface side of the pallet A, and 9 is a vehicle stop position. In this example, the attached steel members such as the mounting plate 7 and the vehicle stopper mounting material 8 that are welded and fixed to the pallet A also have the thickness of the steel plate of the pallet A. When the thickness of the attached steel members exceeds twice the thickness of the pallet A as in the case of the reinforcing plate 6, beam 5, etc. Similarly, it tends to cause distortion in the central ridge 4 or its vicinity when it is pulled up, and it is also preferably equal to or less than about twice the thickness of the pallet A, preferably about 1.5 times or less. .

  Although the illustrated example is as described above, in the practice of the present invention, the specific structure, material, shape, dimensions, etc. of the pallet, central ridge, tire traveling plate, reinforcing plate, beam, attached steel member, etc. These relationships, additions to these, and the like can be in various forms as long as they do not contradict the gist of the invention.

It is a partially cutaway partial perspective view of a pallet. It is a top view of a pallet. FIG. 2 is a vertical sectional view taken along line AA in FIG. 1. It is an enlarged vertical sectional view of a tire travel plate portion.

A Zinc plated pallet 1 Side frame 2 Tire travel plate 3 Leg 4 Central raised strip 5 Beam 6 Reinforcement plate 7 Mounting plate 8 Vehicle stopper mounting material 9 Travel prevention pipe

Claims (1)

  Surfaces through side frames on both sides in the width direction, a pair of tire traveling plates disposed on both ends in the width direction between the side frames, and leg portions that are bent and raised in a belt-like manner on both sides of the intermediate position between the side frames. A central ridge formed by an inclined surface with an inverted V-shaped cross-section that has a wide band in the longitudinal direction that is levitated in the longitudinal direction and has a center in the width direction as a peak position and is gently inclined from the peak position to both sides in the width direction; And four beams in the longitudinal direction, which are in contact with the bottom surface in a non-contact state with the central ridge in the middle in the longitudinal direction and welded to the side frames on both sides in the width direction, and the center between the beams in the middle in the longitudinal direction A pair of reinforcing plates in the width direction symmetrically arranged in the width direction intermediate position by being intermittently welded at a predetermined pitch to the back surface of the gently inclined surface having an inverted V-shaped cross section of the ridges, and standing vertically downward in the longitudinal direction; With In a pallet that has been subjected to galvanizing treatment by immersion in a hot dip galvanizing tank with the reinforcing plate and the beam having a wall thickness that is within twice the wall thickness of the steel plate panel, the pair of tire traveling plates are connected to the side frame. In the same way, between the central standing ridges, the center in the width direction is the peak position, and the slope is gently inclined from the peak position to both sides in the width direction to form a low-bulged cross-sectionally V-shaped cross section, and the gentle inclination The angle of the inclined surface of the tire is set to an angle of 3 ± 1 ° with respect to the horizontal plane to prevent in-plane distortion of the tire traveling plate during the zinc plating and generation of tire squeaking noise during vehicle entry / exit. A galvanized pallet for multistory parking lots.

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