JP3025117B2 - Steel ball transfer system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel ball type transport system suitable for transporting heavy objects, and more particularly to a steel ball type transport system which is inexpensive and capable of performing straight transport as well as bending transport.

[0002]

2. Description of the Related Art Conventionally, cylindrical rollers 3 are arranged on a bed 2 laid on a roadbed 1 as shown in FIG. A roller type transport system in which the transport platform 10 is rolled while being supported by the cylindrical roller 3 to move in the direction of the arrow, or a hose connected to the air source 4a on the floor plate 2 as shown in FIG. There is proposed a pneumatic transfer system in which an air seal 4 connected continuously at 4b is placed, and the air seal 4 is moved in the direction of the arrow while the transfer board 10 is supported. In each case, the super-heavy objects are transported
Placed on 10.

[0003]

However, in the conventional roller-type transport system as described above, since it is impossible to sharply change the traveling direction, the path conditions are restricted. In addition, the pneumatic transfer system requires expensive equipment such as an air source, and in order to prevent air leakage, it is necessary to ensure the sealing performance between the floor plate and the air seal. Is necessary, and the cost increases.
Furthermore, a system has been proposed in which a rail is laid and an iron wheel type trolley or a caterpillar type trolley is run on the rail, but enormous costs are required for rail laying costs and manufacturing costs for large-size trolleys. The cost is not profitable.
Also, a system for transporting a super-heavy object using a tire-type cart has been proposed.

The present invention seeks to solve the above-mentioned problems of the conventional super-heavy object transport system.
Through a number of steel balls held at regular intervals by a retainer,
By supporting the transport platform for loading super heavy objects on the floor plate laid on the roadbed, rolling the steel balls to carry the super heavy objects, and ensuring the straight-line transportation by the guide on the floor plate, and It is an object of the present invention to provide a steel ball type transfer system with low equipment cost and operation cost.

[0005]

In order to achieve the above-mentioned object, the steel ball type transport system of the present invention has a large number of supports for supporting a heavy load carrying platform on a floor board laid on a roadbed. In a steel ball type conveying system in which steel balls are used, while the above-mentioned many steel balls are rotatably held by a plurality of retainers, and the respective retainers are connected by a link,
A platform guide and a retainer guide as guide members for the transport platform and the retainer are attached to both sides of the floor plate, respectively.

[0006]

In the above-described steel ball type transport system of the present invention, since a large number of steel balls are held by a retainer so as to be rollable, and a plurality of retainers are connected by a link, each steel ball is connected to one side. There is no deviation, and a stable supporting action of the transfer board by a large number of steel balls can be obtained. Further, the platform guide and the retainer guide guide the moving transport platform and the retainer, and act to ensure the straightness of the transport platform.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a steel ball type conveying system according to an embodiment of the present invention.
2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a sectional view taken along the line BB of FIG. 1, FIG. 4 is a plan view of the retainer, and FIG. It is a side view. 1 to 5 in FIGS. 6 and 7 denote substantially the same members. The steel ball type transport system of this embodiment is also used for transporting a super-heavy object.
A number of steel balls 11 are used to support the steel balls. A rectangular retainer 13 as shown in FIG. 4 is used to hold the steel ball 11 so that it can roll, and a steel hole having a circular hole slightly smaller than the diameter of the steel ball 11 is formed on the lower surface of the retainer 13. A ball support 16 is attached so that the steel ball 11 can be held in the retainer 13 even when the retainer 13 is lifted.

A plurality of retainers 13 holding a large number of steel balls 11 are placed on the base plate 2 with their short sides coinciding with the transport direction of the transport platform 10, and are disposed adjacent to each other. Each of the retainers 13 is connected by a link 12 having a fixed length disposed in parallel with the transport direction of the transport board 10. Reference numeral 14 indicates a connecting pin. Further, a retainer support 15 is attached to a lower surface of the retainer 13. This retainer support
15 is a retainer so that the steel ball 11 contacts the inner surface of the hole for supporting the steel ball 11 formed on the retainer 13 on its center line.
This adjusts the vertical position of the 13
When forcibly pushing and pulling the 11 with the retainer 13, only the horizontal component toward the center of the steel ball 11 is left and the vertical component is not applied, ensuring stable rolling operation of the steel ball 11. It is possible to do.

Reference numeral 5 in FIG. 1 denotes a super-heavy object loaded on a carrier board 10. Reference numeral 7 denotes a hydraulic cylinder. The hydraulic cylinder 7 is supported by a cylinder support 6 which is bolted to the floor plate 2, and expands and contracts by receiving a supply of pressure oil from a hydraulic source 8. Yes,
As shown in FIGS. 1 and 2, the hydraulic cylinder 7 is arranged such that the distal end of the telescopic ram faces the rear end surface of the carrier board 10. Further, as shown in FIG. 3, a retainer guide 17 for guiding the retainer 13 and a carrier board 10 on both sides in the traveling direction with the retainer 13 on both sides in the traveling direction The platform guides 18 for guiding are detachably attached.

In the above-described configuration, a plurality of retainers 13 holding a large number of steel balls 11 are connected to each other by a link 12 such that the short side of each retainer 13 coincides with the transport direction of the transport platform 10. The carrier board 10 is mounted on the retainer 13 thus placed on the board 2, and the super heavy object 5 is loaded on the carrier board 10. When the rear end face of the transfer board 10 is pushed leftward in FIGS. 1 and 2 by the extension operation of the hydraulic cylinder 7, the transfer board 10 rolls on the steel balls 11 of the retainer 13, and FIG. Arrow X
In the direction shown by the arrow while being guided by the retainer guide 17 and the board guide 18. At this time, the steel ball 11 rolls on the floor plate 2 and the retainer 13 also moves in the same direction as the transfer board 10, but the movement distance of the retainer 13 is ２ of the movement distance of the transfer board 10.

In this manner, as the transfer board 10 moves, the transfer board 10 is sequentially moved from the retainer 13 disposed rearward.
It comes out of contact with and becomes useless. Therefore, if the unneeded retainers 13 are disconnected and sequentially disposed in front of the moving direction of the transfer board 10, the transfer board 10 can be reduced with a small number of retainers.
Can be transported over a long distance. The above-described handling operation of the retainer 13 is facilitated by forming the retainer 13 in a rectangular shape and disposing the short side of the retainer 13 so as to coincide with the transport direction of the transport platform 10. In addition, the steel ball support 16 is
The steel balls 11 are prevented from falling off during transportation. In addition,
If the retainer 13 and link 12 are not used,
11 does not roll at the non-contact portion with the base plate 2 or the carrier board 10, so that the contact position between the base plate 2 and the carrier board 10 and the steel balls 11 is biased with the movement of the carrier board 10, and the steel balls 11 Contact, etc., so that the support of the transfer board 10 and the stable rolling operation of the steel balls 11 cannot be performed.

FIG. 4 shows an example of the arrangement of the steel balls 11 in the retainer 13 in accordance with the contact load plan between the transfer board 10 and the steel balls 11. The transfer of the transfer board 10 can be performed not only in a straight line but also in a bent direction in a desired direction. That is, as shown in FIG. 3, when the conveyance in the arrow X direction is completed and the conveyance (progressing) direction is changed in the arrow Y direction, the cylinder support 6, the hydraulic cylinder 7, the hydraulic source 8, the retainer guide 17 and While the base guides 18 are respectively moved to the floor plate 2a extending in the direction of the arrow Y,
13 is arranged in accordance with the transfer direction (the direction of the arrow Y) after the transfer direction of the transfer board is changed, and the transfer board can be changed in direction and transferred by the same procedure as described above. Although FIG. 3 shows a case where the direction is changed in a right angle direction, it is needless to say that the direction can be changed at an arbitrary angle by laying the floor plate 2a at an arbitrary bending angle.

As described above, the steel ball transfer system of this embodiment has the following operational effects. (1) Not only straight conveyance but also bending conveyance at any angle is possible. (2) By holding the steel balls in the retainer and linking the retainers with each other, the distance between the steel balls can be kept constant,
It is possible to ensure the stable and stable support of the transfer board by the steel balls and the rolling operation of the steel balls. (3) Because the retainer has an elongated shape, it is easy to advance the retainer that has come off the carrier board, and by repeating this operation sequentially, a small number of retainers can be used to carry a long distance. It is economically advantageous. (4) The straightness of the retainer and the transfer board can be improved by the retainer guide and the board guide, and reliable and stable transfer can be realized.

[0014]

As described in detail above, according to the steel ball type conveying system of the present invention, the following effects and advantages can be obtained. (1) By simply installing a super-heavy object, it is possible to perform not only straight transport but also any bent transport. (2) Since many steel balls are not biased to one side, the above-mentioned conveyance can be performed stably and reliably. (3) The straightness can be improved by the retainer guide and the base plate guide, and the transfer of a super heavy object can be further reliably and stably performed.

[Brief description of the drawings]

FIG. 1 is a side view showing a steel ball type conveying system as one embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is a plan view of the retainer.

FIG. 5 is a detailed side view showing a portion C of FIG. 1 in an enlarged manner.

FIG.

FIG. 7 is a schematic side view of a conventional steel ball type transfer system.

[Explanation of symbols]

 1 Roadbed 2 Floor plate 3 Cylindrical roller 4 Air seal 5 Super heavy object 6 Cylinder support 7 Hydraulic cylinder 8 Hydraulic power source 10 Carrier board 11 Steel ball 12 Link 13 Retainer 14 Connecting pin 15 Retainer support 16 Steel ball support 17 Retainer guide 18 Board Guide

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-34632 (JP, A) JP-A 50-16343 (JP, U) JP-A 57-46509 (JP, U) 6573 (JP, B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65G ⁷ /02-7/04 B65G 13/00-13/12 B65G 39/00-39/20

Claims (1)

(57) [Claims] 1. A steel ball-type transfer system in which a large number of steel balls are used to support a heavy-loading transfer board on a bed laid on a roadbed, wherein the large number of steel balls include a plurality of retainers. While the retainer is held so as to be rollable, the retainers are connected by a link, and the board guide and the retainer guide as guide members of the carrier board and the retainer are attached to both sides of the floor plate, respectively. A steel ball transfer system, characterized in that: