JP5545613B2 - Conveyor chain device - Google Patents

Description

  The present invention relates to a transport chain device used for clamping and supporting a long flexible transported object such as an electric cable or a hose connected to a moving member.

  Bendable conveyance that clamps and supports long objects such as flexible cables and hoses when supplying power, water, oil, air, gas, etc. to moving members such as self-propelled machinery May use chain device.

  As a conventional transport chain device, a pair of upper and lower shafts are installed at every pitch between two right and left link plates that are connected to bend, and a roller with a groove that sandwiches the transported material up and down is rotated around each shaft. A format for freely mounting is known (Patent Document 1). The upper and lower rollers are each formed with a groove having a substantially semicircular cross section so as to be in contact with about ½ of the outer periphery of the conveyed product according to the outer diameter of the conveyed product. Therefore, the flexible conveyed object between the upper and lower rollers is clamped so as to be relatively movable only in the length direction.

Japanese Utility Model Publication No. 60-39164

  According to such a prior art, the conveyed product is clamped via the upper and lower rollers, but about 1/2 of the outer circumference contacts the groove of each roller, so the rollers at the bottom of the groove and the left and right upper edges Due to the difference in rotational speed, relative slip occurs between the outer periphery of the conveyed product and the inner surface of the groove of the roller, and there is a problem that the outer surface of the conveyed product may be worn and damaged early. This problem is remarkable when the outer diameter of the conveyed product is a large diameter of several tens mm or more.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a transport chain device that can effectively eliminate the problem of early breakage of a transported object in view of the problems of the prior art.

  In order to achieve such an object, the configuration of the present invention includes a left and right two rows of link plates that are connected to bendable in only one direction via a connecting plate, a pair of upper and lower shafts that connect between the link plates, Each roller includes upper and lower rollers that are rotatably mounted on each of them, and left and right flanges that are rotatably mounted on the shaft so as to be positioned at both ends of the roller on one shaft between the link plates. In addition to conforming to the outer diameter of a long transported object having a circular cross section, an annular recess having a circular arc cross section in contact with a part of the outer periphery of the transported object is formed over the entire width. The gist of the present invention is to clamp the single conveyed object together with the upper and lower rollers so as to be movable relative to each other only in the length direction.

  In addition, a recessed part can be set to the width | variety equivalent to 40 to 60% of the outer diameter of a conveyed product, and a right-and-left connection block can be freely rotated to the same position via a rotatable collar on each of the upper and lower shafts. The left and right connecting blocks on each axis can be connected to each other.

  According to the configuration of this invention, the conveyed product is clamped from the upper, lower, left and right via the upper and lower rollers that are in contact with only a part of the outer periphery of the conveyed product and the flanges that are installed at both ends of the one roller. That is, the upper and lower rollers mounted on the pair of upper and lower shafts respectively contact the upper and lower sides of the conveyed product via the annular recesses, and the left and right flanges on one shaft contact the left and right of the conveyed item, thereby At the same time, the conveyed product can be clamped so as to be relatively movable only in the length direction. The annular recesses of the upper and lower rollers are each formed in a circular arc shape that matches the outer diameter of the conveyance object having a circular cross section, and each width may be set to a width corresponding to 40 to 60% of the outer diameter of the conveyance object. preferable. When the width is less than 40% of the outer diameter of the conveyed product, the contact between the conveyed product and the roller is close to a point contact, and a local excessive force is easily applied to the conveyed product. The depth of the recess becomes excessive, and the difference in rotational speed between the bottom and the upper edge of the recess becomes excessive, which may damage the outer surface of the conveyed product at an early stage.

  The present invention is particularly effective when the outer diameter of the conveyed product is a large diameter of about 40 mm or more, and the outer diameter of each roller at this time is about 40 to 90% of the outer diameter of the conveyed object, Particularly preferably, it is practically set to about 45 to 60%.

  By arranging the left and right flanges every two pitches of the link plate, the required number can be reduced to ½ as compared to the case where they are arranged every one pitch. In addition, although a conveyed product prevents dripping by gravity through the upper and lower rollers provided for every pitch of a link plate, the left-right direction can fully be restrained even if it is every 2 pitches. However, the pitch here means the pitch of the link plates connected via the connecting plate.

  The left and right connecting blocks attached to the upper and lower shafts, together with the collars on each shaft, form a space for transportation that is surrounded by the upper, lower, left, and right sides. Can be stored. Note that the left and right connecting blocks on each shaft can be mounted at the same position, for example, connected to each other via bolts and nuts, thereby improving the overall mechanical rigidity.

Overall configuration side view Main assembly perspective view Main part exploded perspective view (1) Main part exploded perspective view (2) 1 is an enlarged sectional view corresponding to the line AA in FIG. 1 is an enlarged cross-sectional view corresponding to the line BB in FIG. CC equivalent sectional view of FIG. 6

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The chain device for conveyance is provided on each of the pair of upper and lower shafts 21, 21 connecting the link plates 11, 11... Of the left and right rows, the link plates 11, 11. The upper and lower rollers 22, 22... To be mounted and flanges 23, 23... Positioned at both ends of each roller 22 on one shaft 21 are the main members (FIGS. 1 and 2). However, FIG. 1 shows an external side view in the upper half of the middle break line, and shows a central longitudinal cross-sectional view in the lower half. 2 shows only a portion corresponding to one pitch of the link plates 11, 11... In each row, and end fittings 31, 31.

  The link plates 11, 11... In each row are connected in such a way as to bend only in one direction by sandwiching the tip portions of the connecting plates 12 having the same outer shape as the link plate 11 as a pair of inner and outer plates. 2 and 3). That is, three large-diameter round holes 11b, 11b,... Are formed around the small-diameter round hole 11a at each distal end of each link plate 11 (FIG. 3). .. Are arranged in a circle around the round hole 12a corresponding to the round hole 11a. Each long hole 12b corresponds to a round hole 11b.

  Therefore, the inner and outer link plates 11 and 11 have small diameter pins 13a inserted into the round holes 11a, 12a and 11a, and large diameter pins 13b inserted into the respective round holes 11b, long holes 12b and round holes 11b. The connecting plate 12 is connected to be bent with the pin 13a as a center of rotation. The pin 13a and each pin 13b are provided with retaining rings for retaining them on the outer sides of the inner and outer link plates 11, 11, respectively. The bending direction and the maximum bending angle of the link plates 11 and 11 and the connecting plate 12 are regulated by the position and length of each long hole 12b through which each pin 13b is inserted.

  Each terminal fitting 31 is formed with a round hole 31a, long holes 31b, 31b... Similar to the round holes 12a, long holes 12b, 12b. Therefore, each end fitting 31 is connected to the inner and outer link plates 11 and 11 so as to be bent at a predetermined angle with a pin 13a inserted into the round holes 11a, 31a and 11a as a rotation center. The end fitting 31 can be bent in the same direction as the maximum bending angle of the link plates 11, 11 according to the bending direction of the link plates 11, 11 with respect to the connecting plate 12, and is also about 1 to 2 ° in the reverse direction. Can be bent at a slight angle (two-dot chain line in FIG. 1). Each end fitting 31 is provided with elongated holes 31c and 31c for attachment on a tongue piece 31d bent inward to be connected to a fixing member and a moving member (not shown) (FIG. 3).

  Both ends of the pair of upper and lower shafts 21 and 21 are screwed to the inner and outer link plates 11 and 11 of each row via bolts 21a. Each bolt 21 a passes through the bolt holes 11 c and 11 c of the inner and outer link plates 11 and 11 via spring washers, and is screwed into the screw hole at the tip of the shaft 21. However, a spacer plate 14 having the same thickness as that of the connecting plate 12 and the terminal fitting 31 is interposed between the inner and outer link plates 11 and 11. The spacer plate 14 has bolt holes for bolts 21 a and 21 a. 14a and 14a are formed.

  The upper and lower shafts 21 and 21 are respectively mounted with rollers 22 and 22 at both ends, a central collar 24, and left and right connecting blocks 25 and 25 at both ends of the collar 24 (FIGS. 2 and 4). However, with respect to one shaft 21 for every two pitches of the link plates 11, 11..., The length in the axial direction of each roller 22 is shortened, and left and right flanges 23, 23 are attached to both ends of each roller 22. Yes. Each roller 22, flange 23, collar 24, and connecting block 25 are individually rotatably mounted on the corresponding shaft 21. Further, the connecting blocks 25 and 25 on each shaft 21 are mounted at the same positions as the corresponding connecting blocks 25 and 25 on the other shaft 21, and the other shafts are respectively connected via bolts 25a and 25a with nuts. 21 is connected to a corresponding connecting block 25 on FIG. 21 (FIGS. 5 and 6). However, in FIG. 5 and FIG. 6, only one side bolt 25a is shown.

  Between the upper and lower rollers 22, 22 on the upper and lower shafts 21, 21, it is possible to clamp a long flexible conveyance object W having a circular cross section so as to be relatively movable only in the length direction. However, a shallow annular recess 22 a having an arcuate cross section that matches the outer diameter D of the conveyed product W is formed at the center of each roller 22. Accordingly, each roller 22 is in contact with a part of the outer periphery of the conveyed product W via the annular concave portion 22a, and the width L of the concave portion 22a is L / D = 0. It is set to 4 to 0.6. However, the outer diameter d of the roller 22 is set to about d = (0.4 to 0.9) D. The short roller 22 provided with flanges 23, 23 at both ends makes the axial length coincide with the outer diameter D of the conveyed product W (FIG. 6). Therefore, the flanges 23, 23 allow the conveyed product W to be viewed from the left and right. It shall be sandwiched. In other words, each flange 23 is formed to have a radius exceeding 1/2 of the axial distance a of the upper and lower shafts 21, 21.

  A transport space S surrounded by upper and lower collars 24 and 24 and a pair of left and right connecting blocks 25, 25... Is formed at the center of the upper and lower shafts 21 and 21. In the space S, a small-diameter flexible transported object (not shown) can be stored (in FIG. 7, the left-right direction of the space S between the upper and lower collars 24, 24).

  Such a chain device for transport is connected to the fixed member at one end side through the end fittings 31, 31... At both ends, and is connected to the moving member at the other end side through the transported articles W and W supported inside. Thus, power, water, air, gas, etc. can be safely transmitted between the fixed member and the moving member. The reciprocating direction of the moving member is, for example, the arrow K direction in FIG.

  In the above description, the conveyance chain device is configured to change the diameter d of the upper and lower rollers 22 and 22 attached to the upper and lower shafts 21 and 21 for each pair of upper and lower pairs, thereby conveying the articles W having different outer diameters D. , W can be supported. Alternatively, one or three or more rollers 22 may be attached to the upper and lower shafts 21 and 21 and combined vertically to support one or three or more conveyed objects W. Further, on each shaft 21, the conveyance space S may be omitted by omitting one of the connecting blocks 25, 25 attached between the rollers 22, 22 adjacent in the axial direction and the collar 24. . However, when one roller 22 is mounted on each shaft 21, all of the connecting block 25 and the collar 24 may be omitted.

  The flanges 23, 23... Provided on one of the upper and lower shafts 21, 21 may be provided for each pitch of the link plates 11, 11. You may provide for every predetermined pitch more than a pitch.

W ... Conveyed object 11 ... Link plate 12 ... Connection plate 21 ... Shaft 22 ... Roller 22a ... Recess 23 ... Flange 24 ... Collar 25 ... Connection block

Patent applicant Oriental Oriental Industry Co., Ltd.
Nippon Steel Corporation
Attorney Tadaaki Matsuda, Attorney

Claims (3)

Two link columns on the left and right sides that are connected to bendable in only one direction via a connecting plate, a pair of upper and lower shafts that connect the link plates, and upper and lower rollers that are rotatably mounted on each of the shafts. , between the link plate, so as to be positioned at both ends of one roller on said shaft becomes and a right and left flanges rotatably mounted on said shaft, said each roller is of circular cross-section length An annular recess having a cross-sectional arc shape that is in contact with a part of the outer periphery of the conveyed object over the entire width, and the left and right flanges are in contact with the left and right of the conveyed object, respectively. A conveying chain device characterized by clamping a single conveyed object together with the upper and lower rollers so as to be relatively movable only in the length direction. The transporting chain device according to claim 1 , wherein the recess is set to a width corresponding to 40 to 60% of the outer diameter of the transported object. The left and right connecting blocks are rotatably mounted at the same position on the upper and lower shafts through rotatable collars, respectively, and the left and right connecting blocks on each shaft are connected to each other. Item 3. A chain device for conveyance according to item 1 or 2.

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