JP2002145267A - Vibration-isolation pallet for transportation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-isolation transport pallet which can carry objects without being damaged by vibration. SOLUTION: The vibration-isolation transport pallet for carrying objects 23 includes a base frame 1, an elastic member 14 provided on the base frame and a mount member 15 which is supported by the elastic member to allow elastic displacement and on whose upper surface the objects are mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration pallet for transporting an article which may be damaged by vibration of an electronic device or a precision device.

[0002]

2. Description of the Related Art Vehicles such as trucks are used as means for transporting goods. If the conveyed object is likely to be damaged by vibrations like electronic equipment or precision equipment, the suspension is a leaf spring in a normal vehicle, so the vibration damping ability is poor and it is caused by unevenness of the running road Vibrations are easily transmitted to the carrier. For this reason, there is a possibility that the conveyed article may be damaged by vibration during conveyance.

[0003] Therefore, when a conveyed object such as an electronic device or a precision device is conveyed, a vehicle having an air suspension is used so that vibration during the transfer is hardly transmitted to the conveyed object.
In a vehicle having an air suspension, vibrations caused by unevenness of a traveling path and the like are absorbed and attenuated by the air suspension, so that it is difficult for the vibration to be transmitted to a conveyed product loaded on a cargo bed of the vehicle. For this reason, it is possible to carry the article without damaging the article.

[0004] However, since a vehicle having an air suspension is expensive, not only is it burdensome to own the vehicle, but also the vehicle cannot be secured when necessary.

In addition, in order to increase the vibration damping ability of the air suspension, the spring constant of the air suspension must be changed in accordance with the load (load weight) of the conveyed object. Or the work is cumbersome.

[0006] In some cases, a conveyed object is conveyed by a freight car instead of a vehicle. In the case of a freight car, since it travels on rails, it is considered that the occurrence of vibration is reduced as compared with the case of traveling on a road surface. However, it is inevitable that a large vibration is generated depending on the laying state of the rail. Moreover, since the suspension of the freight car is a leaf spring, the vibration is easily transmitted to the conveyed article without being greatly attenuated. Therefore, it is not suitable for transporting easily damaged articles such as electronic devices and precision instruments.

On the other hand, when moving a conveyed object such as electronic equipment or precision equipment in a factory or the like, the conveyed object is placed on the upper surface of a pallet and the pallet is conveyed by a forklift. In this case, the vibration accompanying the traveling of the forklift is directly transmitted to the conveyed object via the pallet, so that the vibration may damage the conveyed object.

[0008]

As described above, when a conveyed object is conveyed by using a vehicle having an air suspension, the conveyed object can be conveyed without damaging the conveyed object. Since the vehicle is expensive, the transportation cost is high and the vehicle cannot be secured, which is not practical.

[0009] In addition, when the goods are conveyed by a freight car or a forklift, vibrations are easily transmitted to the goods, and the goods may be damaged.

An object of the present invention is to provide a vibration-isolating pallet for transporting a conveyed article without damaging the conveyed article even if the conveyed article is conveyed by an ordinary vehicle, a wagon or a forklift. It is in.

[0011]

According to a first aspect of the present invention, there is provided a vibration isolating pallet for transporting a conveyed article, wherein a base frame, an elastic member provided on the base frame, and an elastic member provided by the elastic member. And a mounting member on which the transported object is mounted on the upper surface of the pallet.

According to a second aspect of the present invention, there is provided a vibration-isolating pallet for transporting a conveyed article, wherein the first frame is provided at both ends in a predetermined direction on an upper surface of the base frame.
An elastic member provided in the vicinity of the first engaging portion at both ends in a predetermined direction on the upper surface of the base frame;
A pair of mounting members provided at both ends of the upper surface of the base frame in a predetermined direction and elastically supported by the elastic members, on which the transported object is mounted on the upper surface, and the base formed on the mounting member and A second engagement portion that engages the first engagement portion of the frame to limit the movement of the mounting member in the predetermined direction, and intersects the predetermined direction of the mounting member provided on the base member. And a regulating means for restricting the movement in the direction of movement.

According to a third aspect of the present invention, the elastic member has a plurality of projections having different heights formed on a surface facing the base frame and the mounting member. A vibration isolation pallet for transportation according to claim 1 or 2.

According to the first and second aspects of the present invention, the mounting member on which the article is mounted on the base frame is supported by the elastic member so as to be elastically displaceable. The vibration is attenuated, and the vibration is hardly transmitted to the conveyed object.

According to the third aspect of the present invention, since the plurality of projections having different heights are provided on the elastic member, the elastic member is gradually compressed and deformed in accordance with the intensity of vibration applied to the conveyed object. Absorbs vibration applied to

[0016]

An embodiment of the present invention will be described below with reference to the drawings.

The vibration isolating pallet P for transport according to the present invention has a base frame 1. The base frame 1 has three rectangular tubular leg members 2 spaced apart in parallel at a predetermined interval,
On the upper surface of one end portion and the other end portion of the leg member 2 in the longitudinal direction, a lower transverse member 3 having a substantially U-shaped cross section is provided by connecting a lower side portion 4 to each leg member 2 and fixing it.

As a result, an insertion portion 1a is formed between the adjacent leg members 2 on the lower surface side of the lower horizontal member 3, as shown in FIG. Have been. As shown in FIG. 3, the connection between the pair of leg members 2 and the lower horizontal member 3 located at both ends is reinforced by stays 2a in order to increase the connection strength.

As shown in FIG. 1, the upper side 5 of the lower horizontal member 3 is formed to have a shorter width than the lower side 4.
The lower end of one side 7 of the upper horizontal member 6 bent in an L shape is joined and fixed to the upper surface thereof. The other side 8 of the upper side member 6 is formed in an L shape longer than the one side 7, and the upper side 5 of the lower side member 3 is formed.
It extends downward. A lower end portion of the side portion 8 is formed in a first engaging portion 8a which is bent in an L shape inward in the width direction of the upper horizontal member 6.

Connecting screws 9 project from upper surfaces of one end of the pair of upper transverse members 6 in the longitudinal direction.
Are engaged with each other and connected and fixed by nuts 12. As shown in FIG. 2, a second vertical member 13 is provided at the other end in the longitudinal direction of the pair of upper connecting members 6 with both ends fixed by welding or the like.

A plurality of elastic members 14 are provided on the upper surface of the lower side 4 of the lower horizontal member 3 at predetermined intervals. In this embodiment, an elastic member 14 is provided at two positions, one end and the other end in the longitudinal direction of the lower horizontal member 3, with one side in the width direction approaching the other side 8 of the upper horizontal member 6. ing.

A mounting member 15 is provided on the upper surface of the elastic member 14.
Are provided by joining the lower surfaces of both ends in the longitudinal direction.
One end of the mounting member 15 in the width direction is bent and formed into a substantially U-shaped second engaging portion 16.
The first engagement portion 8a is engaged with the inside of the inner ring 6. The width between the inner surfaces of the second engaging portions 16 is set slightly larger than the width of the first engaging portions 8a. For this reason, the movement of the mounting member 15 in the width direction is restricted by the first engagement portion 8a.

The elastic member 14 has first to third projections 17a, 17b, 17c having different heights formed on the upper surface thereof.
Fourth and fifth protrusions 18a and 18b having different heights are provided on the lower surface.
Are formed. In a state where a predetermined load is applied to the mounting member 15, the fourth protrusion 18 is provided on the lower side 4 of the lower horizontal member 3.
a, the first protrusion 17a is provided on the lower surface of the mounting member 15.
Are in contact. The load applied to the mounting member 15 increases,
When the elastic member 14 is compressed and deformed, each protrusion comes into contact with the upper surface of the lower side portion 4 and the lower surface of the mounting member 15 in ascending order of height.

In FIG. 1, the first to fifth projections 17 are provided.
Although only one or two a, 17b, 17c, 18a, and 18b are visible, actually, three or more of these protrusions are provided on the upper and lower surfaces of the elastic member 14.

As shown in FIG. 1, the second vertical member 13
Nuts 19 are fixed to the upper surfaces of both ends of the. A locking screw 21 as a restricting means is screwed into the nut 19. The locking screw 21 passes through a locking hole 22 formed at one end of the second vertical member 13 and the mounting member 15. Thereby, the locking screw 21 restricts the mounting member 14 from moving along the longitudinal direction on the elastic member 15. That is, the mounting member 15 is provided so as to be vertically displaceable by compressing the elastic member 14 in the thickness direction, but the movement in the width direction and the longitudinal direction is restricted.

The upper surfaces of the pair of mounting members 15 provided along the lateral direction (width direction) of the base frame 1 are damaged by the impact of precision equipment or electronic equipment as shown by a chain line in each figure. An easily transported object 23 is placed.

According to the vibration isolating pallet for transport configured as described above, the conveyed article 23 is placed on the pair of placing members 15. The mounting member 15 is supported by the elastic member 14 so as to be elastically displaceable in the vertical direction.

When the transport isolation pallet is loaded on a vehicle and transported, even if the vehicle vibrates as it travels, the vibration is attenuated by the elastic member 14 and transmitted to the mounting member 15. This makes it difficult for the vibration to be transmitted to the transported object 23 placed on the mounting member 15, so that it is possible to prevent the transported object 23 from being damaged by the vibration during transport.

The elastic member 14 has a plurality of projections 17a, 17b, 17c, 1 having different heights on an upper surface and a lower surface, respectively.
8a and 18b are provided. Therefore, the transported article 23
When the acceleration applied to the object is small, the mounting member 15 and the lower horizontal member 3 come into contact with the protrusion having the highest height.
3 is supported by the mounting member 15 with soft elasticity. When the acceleration applied to the conveyed object 23 increases, the tallest protrusion of the elastic member 14 is compressed, and the mounting member 15 and the lower horizontal member 3 come into contact with protrusions of the next height.

Thus, the mounting member 15 and the elastic member 1
4, the resilience of the elastic member 14 is also increased, and the elasticity for supporting the transported object 23 is increased (hardened).

That is, the transported object 23 is elastically supported by the elasticity of the hardness corresponding to the change in the acceleration applied to the transported object 23. Therefore, the transported object 23 changes in accordance with the change in the acceleration during the transport. 23 can be reliably supported without being damaged.

The nut 12 that fixes the first vertical member 11 to the upper horizontal member 6 is loosened, the first vertical member 11 is removed from the upper horizontal member 6, and the locking provided on the second vertical member 13 By removing the screw 21 and detaching the second engaging portion 16 formed on one side in the width direction of the placing member 15 from the first engaging portion 8a formed on the upper horizontal member 6, The member 15 can be removed from the base frame 1.

Therefore, the elastic member 1 can be used for a long time.
For example, when the mounting member 15 is deteriorated, the mounting member 15 is removed, so that the elastic member 14 can be inspected or replaced, and further, the elastic member 1 having a different strength (elasticity) depending on the weight of the conveyed object 23.
4 can be easily performed.

Second engaging portion 1 formed on mounting member 15
6 is engaged with the first engaging portion 8a on the base frame 1 side, so that the movement of the mounting member 15 in the width direction is restricted. Further, the mounting member 15 is also restricted from moving in the longitudinal direction by the locking screw 21.

As a result, the transported object 23 mounted on the pair of mounting members 15 is prevented from moving largely in the horizontal direction together with the mounting member 15, so that the transported object 23 is stabilized on the base frame 1. Can be kept in a state.

Further, when the anti-vibration pallet for transportation of the present invention is moved by a forklift in a factory or the like, the vibration transmitted to the conveyed object 23 placed on the pallet can be reduced. 23 can be moved by a forklift without damaging it.

In the above-described embodiment, only two places at both ends in the longitudinal direction of the mounting member 15 are supported by the elastic member 14, but three or more places including an intermediate part are supported by the elastic member 15. The mounting member 15 may be supported by the elastic member 1.
4 may be supported. That is, the number and strength of the elastic members 14 may be adjusted according to the weight of the transported object 23, the durability of the transported object 23, and the like.

[0038]

As described above, according to the first and second aspects of the present invention, the mounting member on which the conveyed object is mounted on the base frame is elastically displaceably supported by the elastic member. did.

Therefore, the vibration is attenuated by the elastic member and transmitted to the conveyed object placed on the placing member.
Vibration is hardly transmitted to the conveyed object, and the occurrence of damage due to vibration can be reduced.

According to the third aspect of the present invention, the elastic member is provided with a plurality of protrusions having different heights.

Therefore, the elastic member compresses and deforms in a stepwise manner in accordance with the intensity of the vibration applied to the conveyed object, and absorbs the vibration applied to the conveyed object. Accordingly, the vibration transmitted to the conveyed object can be attenuated.

[Brief description of the drawings]

FIG. 1 is an enlarged side view of a part of a vibration isolating pallet for transportation according to an embodiment of the present invention.

FIG. 2 is a plan view of the entire structure.

FIG. 3 is a front view of the entire structure.

FIG. 4 is a side view of the entire structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base frame 8a ... 1st engaging part 13 ... 2nd engaging part 14 ... Elastic member 15 ... Mounting member 23 ... Conveyed thing

Claims (3)

[Claims] 1. A vibration isolating pallet for transporting a conveyed article, comprising: a base frame; an elastic member provided on the base frame; A vibration isolation pallet for transport, comprising: a mounting member on which a conveyed object is mounted. 2. A vibration isolating pallet for transporting a conveyed article, comprising: a base frame; first engaging portions provided at both ends in a predetermined direction on an upper surface of the base frame; The first part at both ends in a predetermined direction
And a pair of elastic members provided in the vicinity of the engaging portion of the base frame, and provided on both ends of the upper surface of the base frame in a predetermined direction elastically supported by the elastic members, respectively, on which the conveyed object is placed. A mounting member, a second engaging portion formed on the mounting member and engaging with the first engaging portion of the base frame to limit the movement of the mounting member in the predetermined direction; A vibration isolating pallet for transport, comprising: a regulating means provided on the member for restricting movement of the placing member in a direction intersecting the predetermined direction. 3. A plurality of projections having different heights are formed on a surface of the elastic member facing the base frame and the mounting member.
Or the vibration isolation pallet for transportation according to claim 2.