JPH0627557U - Cargo handling equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is to provide a cargo handling transport device in which a large vibration is not applied to an article when the article is transported. [Structure] A support 5 provided on the upper surface of a base 1 via first vibration isolating members 9 and 11, and a deck plate 15 arranged above the support and on which an article to be conveyed is placed. A connecting member 16 provided on the lower surface of the deck plate, a bendable flexible wire 21 connecting the lower part of the connecting member and the upper part of the supporting member located above this lower part, and the base. Second on either the deck or deck plate
L-shaped member provided on the other of the vibration isolating member 23 and the base or the deck plate, and the second vibration isolating member comes into contact with the second vibration isolating member when the deck plate deforms the connecting member and displaces in a substantially horizontal direction by a predetermined amount or more. 22 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cargo handling transport device for transporting articles that are easily damaged by vibration.

[0002]

[Prior art]

 When goods are transported, pallets, skits, and other transportation devices are used in order to facilitate the transportation work by using forklifts and cranes. However, the conventional conveying device is simply formed in a rectangular plate shape with wood or synthetic resin. Therefore, when transporting a transport device that carries an item that is easily damaged by vibration, such as precision machinery and works of art, use an air suspension vehicle, which is a vehicle with less vibration, to transport the transport device. I had to stay.

However, when the transport device is transported by using a special vehicle such as an air suspension vehicle, the transportation cost may be very high. However, although a vehicle equipped with an air suspension can absorb vertical vibrations well, it does not have a structure that can absorb horizontal vibrations, which damages the articles placed on the conveyor. I was afraid.

Therefore, the applicant of the present invention has proposed a pallet device shown in the specification of Japanese Utility Model Application No. 1-485050 as a carrying device. In this pallet device, a pallet (deck plate) is mounted on a base via a first anti-vibration member, and a second anti-vibration member is attached to either the base or the pallet. On the other hand, an abutting portion for abutting against the second vibration isolating member and restricting horizontal displacement of the pallet is provided on the other side.

According to this structure, the first vibration isolator can absorb the vertical vibration, and the second vibration isolator can absorb the horizontal vibration. Can be protected from vibration.

By the way, when the pallet vibrates in the horizontal direction while elastically deforming the first vibration-proof member, the horizontal vibration is absorbed by bringing the contact portion into contact with the second vibration-proof member. I am trying. The first and second anti-vibration members are usually formed of a relatively hard elastic material such as rubber. Therefore, if the article placed on the pallet has a relatively light weight, when the pallet device is subjected to an external force, the first vibration isolation member does not elastically deform sufficiently and the impact due to the external force is generated. It may be transmitted directly and strongly to the pallet via the first anti-vibration member and damage the articles on this pallet.

Even in the case where a light article is placed on the pallet, in order to displace the pallet in the horizontal direction with respect to the external force applied to the pallet device and absorb the vibration, the dummy is placed on the pallet. By placing the weight on the pallet, it is possible to make it easier for the pallet to be displaced horizontally in response to an external force applied to the pallet device.

However, if the dummy weight is used, not only the cost for that purpose is increased, but also the extra dummy weight must be transported in addition to the article, so that the transportation cost is increased. Sometimes I invite you.

On the other hand, even if the article on which the pallet is placed is light, a soft elastic material is used for the second anti-vibration member so that it can be elastically deformed in the horizontal direction sufficiently. Can be used. However, if the second anti-vibration member is made of a soft material, it will be crushed when a heavy article is conveyed and its elasticity will be impaired, so the pallet will be displaced to absorb external force. It will disappear.

[0010]

As described above, in the conventional conveying device, the deck plate on which the article is placed is arranged to be displaced in the horizontal direction by elastically deforming the vibration isolating member. There is a case in which the toe does not sufficiently and reliably displace in the horizontal direction with respect to an external force and gives an impact to the article.

The present invention has been made in view of the above circumstances, and the purpose thereof is to displace the deck plate in the horizontal direction favorably with respect to an external force so that the deck plate is placed on the deck plate. It is an object of the present invention to provide a cargo handling transport device that does not give a large impact to an article.

[0012]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is directed to a base, a support provided on the upper surface of the base via a first vibration isolating member, and a carrier arranged above the support and conveyed to the upper surface. A curve that connects the deck plate on which the article is placed, the connecting member provided on the lower surface of the deck plate, the lower portion of the connecting member, and the upper portion of the supporting member located above the lower portion. A freely flexible connecting member, a second anti-vibration member provided on either the base or the deck plate, and a deck plate provided on the other of the base or the deck plate. And a contact portion which comes into contact with the second vibration isolating member when the connecting member deforms the connecting member and is displaced in a substantially horizontal direction by a predetermined amount or more.

[0013]

[Action]

 According to the above construction, when an external force is applied to the base, the deck plate is displaced in a substantially horizontal direction while bending the connecting member, so that it is possible to avoid giving a large impact to the article on the deck plate. .

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 is provided with a rectangular plate-shaped base 1. A support pillar 2 is provided upright at four corners of the base 1, and a first flange 3 having a rectangular frame shape larger than the base 1 is provided at an upper end of the support pillar 2.

Four fixing bolts 4 are erected on each of the four corners of the upper surface of the base 1. A support 5 is attached to each fixing bolt 4. That is, the support 5 has a cylindrical shape with the lower surface opened and the opening 6 formed on the upper surface. A second flange 7 is provided on the outer periphery of the lower end of the support body 5. As shown in FIG. 1, through holes 8 through which the fixing bolts 4 are inserted are formed in the second flange 7 at intervals of 90 degrees (only one is shown) in the circumferential direction.

The fixing bolt 4 is provided with a first lower vibration isolating member 9 whose lower surface is joined to the base 1. On the upper surface of the first lower vibration isolating member 9, the second flange 7 of the supporting body 5 is inserted through the through hole 8 into the fixing bolt 4 and joined thereto. A first upper vibration isolating member 11 and a holding plate 12 are sequentially joined to the upper surface of the second flange 7, and the holding plate 12 is fastened by a nut 13 screwed to the fixing bolt 4.

The first lower vibration isolation member 9 and the first upper vibration isolation member 11 are made of an elastic material such as rubber. Therefore, the support body 5, in which the upper and lower surfaces of the second flange 7 are held by the first lower vibration isolation member 9 and the first upper vibration isolation member 11, is elastically displaceable in the vertical direction. ing.

A deck plate 15 is arranged above the support 5. The deck plate 15 has a rectangular plate shape smaller than the inner diameter of the first flange 3 provided above the base 1, and is connected to the lower surfaces of the four corners corresponding to the support body 5, respectively. A body 16 is provided. As shown in FIG. 1, the connecting member 16 has a pipe material 17, a larger diameter than the upper mounting plate 18 provided at the upper end of the pipe material 17 and the upper mounting plate 18 provided at the lower end, and It comprises a disc-shaped lower plate mounting plate 19 having a diameter larger than that of the upper opening 6 of the support 5, and the upper mounting plate 18 is screwed and fixed to the lower surface of the deck plate 15.

The lower mounting plate 19 is inserted inside the support body 5. One end of a plurality of, for example, four wires 21 as flexible connecting members is connected to the lower mounting plate 19 at regular intervals of 90 degrees in the circumferential direction. The other end of the wire 21 is connected to the upper surface of the support 5 located above the lower mounting plate 19. As a result, the deck plate 15 can be displaced in the horizontal direction while bending the wire 21 while being suspended from the support body 5.

L-shaped members 22 that form contact portions are fixed to the four corners of the lower surface of the deck plate 15. At the corners of the first flange 3 corresponding to the sides of the L-shaped member 22, a pair of second vibration isolator 23 is provided. In other words, the second vibration isolator 23 is formed of an elastic material such as rubber into a substantially hemispherical shape, and the mounting bolt 24 is embedded in one end surface side of the second vibration isolator 23. It is attached and fixed to the No. 3 by a pair of nuts 25.

The distance between the L-shaped member 22 and the second vibration isolator 23 is set to “d” as shown in FIG. Therefore, when the deck plate 15 is displaced in the horizontal direction indicated by X and Y in FIG. 3 by the distance d or more, the L-shaped member 22 comes into contact with the second anti-vibration member 23 and the displacement is restricted. It is supposed to be done.

In the cargo handling transporting apparatus having such a configuration, the article 31 is placed on the deck plate 15 as shown by the chain line in FIG. When the vehicle runs, vibration is generated, and the vibration is transmitted to the base 1 of the carrier. When the vibration is transmitted to the base 1, the vibration is transmitted to the deck plate 15 through the first upper and lower vibration isolating members 9 and 11, the support 6 and the wire 21.

For the sake of convenience, the vibration received by the base 1 is disassembled into the vertical direction and the horizontal direction. For the sake of convenience, the vertical vibration is generated between the support 6 and the base 1. Since the upper and lower anti-vibration members 9 and 11 are elastically deformed in the compression direction to be damped, the vertical vibration of the deck plate 15 is extremely reduced.

On the other hand, the horizontal vibration of the base 1 is transmitted to the deck plate 15 via the wire 21. At this time, since the wire 21 is bent because it is flexible, the deck plate 15 gently shakes in the horizontal direction due to the bending to absorb the shock, and the vibration applied to the base 1 causes the deck plate 15 to vibrate. It will be attenuated when it is transmitted to G. In other words, the horizontal runout transmitted to the deck plate is caused by the resistance when the wire 21 is bent and the first upper and lower anti-vibration members 9 and 11 having the support 5 mounted on the base 1. By virtue of the elastic deformation in the direction as well, it is damped to some extent, so that the vibration transmitted to the base 1 is damped and propagated.

The vibration transmitted to the base 1 is increased, and the vibration of the deck plate 15 is not less than a predetermined dimension, that is, the distance d between the second vibration isolator 23 and the L-shaped member 22 is not less than d. Then, the second vibration isolating member 23 elastically contacts the L-shaped member 22. As a result, the second vibration isolating member 23 elastically deforms and absorbs horizontal vibrations, so that the horizontal vibrations of the deck plate 15 are damped.

As described above, since the vertical and horizontal vibrations applied to the base 1 are attenuated and transmitted to the deck plate 15, when the article 31 is transported by the vehicle, the vibration is applied to the deck plate 15. It is possible to prevent the placed article 31 from being directly damaged by a large vibration from the vehicle and damaged.

FIGS. 5A and 5B and FIGS. 6A and 6B show experimental results. FIGS. 5 (a) and 5 (b) are graphs measuring the acceleration generated in the transfer device, in which the horizontal axis shows time (sec) and the vertical axis shows acceleration (G). The lower stage is provided with no vibration isolator. The above is the measurement result of the conventional transport device, and the upper row is the measurement result of the transport device of the present invention. When the above transport device is vibrated in the left-right direction (Y direction), the X direction orthogonal to the Y direction is shown. And the acceleration in the Y direction was measured.

That is, FIG. 5A shows the result of measuring the acceleration in the X direction generated in each of the transport devices. Since the X direction is orthogonal to the vibration direction, the acceleration generated in each transport device is comparatively small, but it is still confirmed that the conventional case shown in the lower stage is larger than the case of the present invention shown in the upper stage. .

FIG. 5B shows the result of the same measurement in the Y direction, which is the left-right direction that is orthogonal to the front-back direction, and in this case, the present invention shown in the upper stage is clearly lower than the conventional one shown in the lower stage. It was confirmed that the generation of acceleration was clearly smaller than that of.

FIG. 6A is a graph showing the measured acceleration rates of the base 1 and the deck plate of the transport apparatus of the present invention. In this graph, the horizontal axis represents the change in frequency, the vertical axis represents the acceleration generated in the base 1 and the deck plate 15, the solid line in the figure represents the acceleration generated in the deck plate 15, and the chain line. Is the acceleration generated in Base 1.

As is clear from this result, although the acceleration is large when the vibration frequency is about Hz, the acceleration generated in the deck plate 15 is sufficiently large with respect to the acceleration generated in the base 1. It was confirmed to be small. In other words, it was confirmed that the transporting device of the present invention has a great effect of damping the vibration of the article 31 placed on the deck plate 15.

FIG. 6B shows a result of measuring the frequency of occurrence of acceleration when the present invention and the conventional transport device are loaded on a vehicle and a running test is performed. In the figure, the vertical axis shows the frequency of acceleration generation, and the horizontal axis shows the magnitude of acceleration. Further, in the figure, a curve A shows the transporting device of the present invention, and B shows a conventional transporting device. As a result, it was confirmed that the conventional carrier device has a higher frequency of occurrence of acceleration over a range of small acceleration to a larger range than the carrier device of the present invention.

The present invention is not limited to the above-mentioned one embodiment, and various modifications can be made without departing from the gist of the invention. For example, the connecting member may be a wire made of an elastic material such as rubber or synthetic resin, and the point is that the connecting member may be elastically curved and deformed. Further, the number of supports for suspending the deck plate and the number of connecting members for connecting the supports and the connecting bodies are not limited at all. Further, the second anti-vibration member may be provided on the deck plate and the abutting portion abutting against the second anti-vibration member may be provided on the base side.

[0034]

[Effect of device]

 As described above, according to the present invention, the support is provided on the base via the first vibration isolating member, and the deck plate arranged above the support is bendable and flexible. The deck plate is swingably connected to the above-mentioned support body by means of swinging, and the swinging of the deck plate in a substantially horizontal direction is provided on either one of the base and the deck plate, and on the other vibration isolator and the other. The contact is restricted by the contact portion provided.

Therefore, of the components of the vibration received by the base, the vibration in the vertical direction is damped by elastic deformation of the first vibration isolating member, and the vibration in the substantially horizontal direction is damped. When the deck plate oscillates while bending the connecting member, and the displacement due to the oscillating becomes greater than a predetermined value, it is damped by the contact between the contact portion and the second vibration isolating member. Therefore, since the deck plate is less likely to vibrate, the articles on the deck plate can be protected from vibration during transportation.

Moreover, since the deck plate swingably provided by the connecting member swings by the vibration transmitted to the base without being largely influenced by the weight of the article, the deck plate can be swung as in the conventional case. This has the advantage that horizontal vibration is not easily damped by the weight of the.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is also a perspective view showing a schematic configuration of the entire apparatus.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the same.

5A and 5B show measurement results of vibrations and accelerations of a conventional and the present invention, and FIG. 5A is a graph of a front-back direction orthogonal to the vibration direction, and FIG. 5B is a horizontal direction along the vibration direction. Graph.

FIG. 6 (a) is a graph of a measurement result of acceleration generated in the base and the deck plate of the transport device of the present invention,
(B) is a graph of the measurement result of the acceleration generation frequency in the conventional and the conveyance apparatus of this invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base, 5 ... Support body, 9, 11 ... 1st vibration isolator,
15 ... Deck plate, 16 ... Connection body, 21 ... Wire (connection member), 22 ... L-shaped member (contact portion), 23 ... Second vibration isolating member.

Claims (1)

[Scope of utility model registration request] 1. A base, a support provided on the upper surface of the base via a first vibration isolating member, and an article to be conveyed placed on the upper surface of the support. A deck plate and a connecting body provided on the lower surface of this deck plate,
It is provided on either the base or the deck plate, and a flexible flexible connecting member that connects the lower portion of the connecting body and the upper portion of the supporting body located above the lower portion. When the deck plate provided on the other of the second vibration isolating member and the base or the deck plate deforms the connecting member and displaces in a substantially horizontal direction by a predetermined amount or more, the second vibration isolating member contacts. A cargo handling transporting device, comprising: a contacting portion that contacts.