JP2015147644A - Safety fence of belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety fence capable of greatly improving workability of installation and preventing loss of components.SOLUTION: A fence panel 30 is constructed by bridging a plurality of metal bars over an outer frame in the lateral direction and/or longitudinal direction. Fixing brackets 20 and 21 have fixing plates 20A and 21A extending to the longitudinal direction or lateral direction, and a plurality of fitting grooves 20F and 20G are formed adjacently in the longitudinal direction or lateral direction on the fixing plates. The plurality of fitting grooves have a shape that a starting end of a groove body extending in the longitudinal direction or lateral direction is opened to a front end edge of the fixing plate. The plurality of fixing grooves have a groove width allowing the metal bar to be fitted into, and at least two fixing grooves are formed by offsetting to the front-back direction of the fixing plate. The metal bars are fitted into the fitting grooves and held by groove body inner edges of the offset fitting grooves so as to attach the fence panel to a conveyor frame 10 or a carrier stand 12.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety fence for a belt conveyor, and more particularly to a safety fence that can greatly improve installation workability and that does not lose sight of parts.

  The belt conveyor is the cheapest transport machine and is widely used in various factories and facilities, but the operator accidentally contacts or gets caught in moving parts such as the conveyor belt and carrier roller while the belt conveyor is in operation. If there is a concern about accidents such as injuries, countermeasures are required.

  Conventionally, a plurality of arc-shaped struts are attached to a conveyor frame at intervals, and a flexible sheet is received by the arc-shaped struts to form a cover that covers the entire carrier side of the conveyor belt. Belt conveyors have been proposed (Patent Documents 1 and 2). In this type of belt conveyor, the operator is less likely to come into contact with movable parts such as the conveyor belt, but the work needs to be lifted each time maintenance is performed, which complicates the work.

  On the other hand, the portal frame is fixed to the conveyor frame, the upper ends of the left and right covers are suspended from the center of the horizontal beam of the portal frame, and the lower ends of the left and right covers can be detached from the carrier stand that supports the carrier roller. Has been proposed (Patent Document 3), in which the entire carrier side of the conveyor belt is covered with left and right covers. In the belt conveyor described in Patent Document 3, there is little possibility that an operator will come into contact with a movable part such as a conveyor belt. Furthermore, since the left or right cover may be opened upward, maintenance can be facilitated.

  On the other hand, the present applicants are composed of a fence panel created by stretching a net or a bar over an outer frame, one part bent into an L shape, and the other part having a flat plate shape. The mounting bolts are inserted into both sides of both parts and screwed into the nuts. The mounting bracket is used for the conveyor frame, and the L-shaped part of one part is used for the conveyor frame. Insert the mounting bolts on both sides of both parts, screw them into the nuts and tighten them to clamp the conveyor frame, and fix the fence panel mounting posts to the parts on the outside of the mounting bracket. A hook and a U-shaped locking ring protrude from the side and are fixed to the column. The hook is suspended by hooking the upper end of the fence panel. Insert a locking ring into the gap between the mesh or rod in the center part, insert a cotter into the U-shape of the locking ring, and press the fence panel's mesh or rod against the mounting column with the cotter It came to propose the safety fence which was made (patent document 4).

Utility Model Registration No. 3028206 Japanese Patent Laid-Open No. 2007-076804 JP 54-122578 A Japanese Patent No. 5172369

  However, in the safety fence of the belt conveyor described in Patent Document 4, it is necessary to insert and remove the cotter with respect to the U-shape of the locking ring when the fence panel is attached / detached. Not only was it required, but it was easy to lose sight of the cotter unless the cotter was tied with a string.

  In view of such problems, an object of the present invention is to provide a safety fence for a belt conveyor that can greatly improve the workability of attachment and detachment and does not lose sight of parts.

  Therefore, the safety fence of the belt conveyor according to the present invention is a belt conveyor in which a conveyor belt is stretched endlessly by a conveyor frame, and a belt conveyor having a fence panel installed by a mounting bracket on the side of the conveyor belt. In the safety fence, the fence panel is formed by spanning a plurality of metal bars in the horizontal direction and / or the vertical direction on the outer frame, while the mounting bracket has a mounting plate extending in the vertical direction or the horizontal direction. The mounting plate has a plurality of insertion grooves formed adjacent to each other in the vertical direction or the horizontal direction, and the plurality of insertion grooves have a start end of a groove body extending in the vertical direction or the horizontal direction at a front end edge of the mounting plate. It has an open shape, the plurality of fitting grooves have a groove width into which the metal rod can be fitted, and at least two fitting grooves have the mounting shape. The mounting bracket is attached to the conveyor frame, the metal rod is fitted into the fitting groove, and the inside of the groove body of the at least two offset fitting grooves. The fence panel is attached to a conveyor frame or a carrier stand by being sandwiched between edges.

  Further, the safety fence of the belt conveyor according to the present invention is a conveyor belt of a belt conveyor in which a conveyor belt is stretched endlessly by a conveyor frame and a carrier roller is rotatably supported by a carrier stand and receives a carrier side belt. In a safety fence of a belt conveyor in which a fence panel is installed on a side by a mounting bracket, the fence panel is configured by spanning a plurality of metal bars on an outer frame in a horizontal direction and / or a vertical direction. The mounting bracket has a mounting plate extending in the vertical direction or the horizontal direction, and the mounting plate is formed with a plurality of insertion grooves adjacent in the vertical direction or the horizontal direction, and the plurality of insertion grooves are in the vertical direction. Alternatively, the groove body has a shape in which the start end of the groove body extending in the lateral direction is open to the front end edge of the mounting plate, and the plurality of fittings Has a groove width into which the metal rod can be fitted, and at least two fitting grooves are formed to be offset in the front-rear direction of the attachment plate, and the attachment bracket is attached to the conveyor frame or the carrier stand. The fence panel is attached to the conveyor frame or the carrier stand by the metal rod being fitted into the fitting groove and sandwiched between the groove body inner edges of the at least two offset fitting grooves. It is characterized by.

  One of the features of the present invention is that the mounting bracket is attached to the conveyor frame or the carrier stand, and a plurality of insertion grooves are formed extending in the vertical direction or the horizontal direction on the mounting plate constituting the mounting bracket, and at least two insertion grooves are formed. Is formed by offsetting the mounting plate in the front-rear direction of the mounting plate, and the metal rod of the fence panel is fitted into the fitting groove of the mounting plate, and is sandwiched by the inner edge of the groove body of the offset fitting groove. .

  Thereby, the fence panel can be securely attached to the conveyor frame or the carrier stand by a simple operation of fitting the metal rod of the fence panel into the fitting groove of the mounting plate, and as in the safety fence described in Patent Document 4. Since there is no need to use a cotter, parts are not lost.

  As long as at least two of the plurality of fitting grooves are offset in the front-rear direction of the mounting plate, the plurality of fitting grooves are formed by offsetting in the front-rear direction of the mounting plate with respect to the adjacent fitting grooves. Preferably it is done.

  A method for attaching the mounting bracket to the conveyor frame or the carrier stand is not particularly limited. For example, the conveyor frame has a channel shape, and the channel shape has a vertical side portion facing outward and another channel frame facing inward.

  Therefore, when the vertical side of the channel shape is facing outward, the mounting bracket is formed so that the base plate and the mounting plate are integrally formed at right angles to each other, and hooked to the bolt that has been inserted through the insertion hole of the base plate. The mounting bracket can be attached to the conveyor frame by screwing it into the nut and hooking the hook on the upper and lower sides of the channel shape of the conveyor frame and tightening.

  Also, in the case of the type with the channel-shaped vertical side facing inward, the mounting bracket has a shape in which the mounting plate is fixed to the vertical side of the base with a U-shaped cross section, and the lower or upper side of the base of the mounting bracket The mounting bracket can be attached to the conveyor frame by sandwiching the upper side portion or the lower side portion of the channel shape of the conveyor frame between the bolt through which the insertion hole is inserted and the upper side portion or the lower side portion of the base.

  In addition, the conveyor frame has an angle shape, and there are an angle shape whose vertical side is outward and an inward shape.

  Therefore, in the case of the type in which the vertical side of the angle shape is facing outward, the mounting bracket has a shape in which the base plate and the mounting plate are integrally formed so as to be at right angles to each other, and the two mounting holes are inserted through the base plate insertion holes. The hook or presser plate is inserted into the bolt and screwed into the nut, and the hook is hooked on the upper or lower part of the angled shape of the conveyor frame and tightened, and the presser plate is pressed against the vertical part to fix the mounting bracket. Can be attached to the conveyor frame.

  Also, in the case of the type with the angled vertical side facing inward, the mounting bracket has a shape in which the mounting plate is fixed to the vertical side of the U-shaped base, and the lower or upper side of the base of the mounting bracket The mounting bracket can be attached to the conveyor frame by sandwiching the upper side portion or the lower side portion of the angle shape of the conveyor frame between the bolt through which the insertion hole is inserted and the upper side portion or the lower side portion of the base.

  When the conveyor frame or the carrier stand has a channel shape, the mounting bracket is composed of a bracket body integrally formed on the base plate so that the mounting plates are perpendicular to each other, and a clamping plate, and the base plate and the clamping plate The mounting bracket can be attached to the conveyor frame or the carrier stand by sandwiching the conveyor frame or the carrier stand with the bolts and nuts.

  A fence panel can be comprised by spanning a metal stick to an outer frame in the horizontal direction and / or the vertical direction. The shape of the outer frame is not particularly limited, and may be a rectangular shape as shown in the following embodiment, or any shape such as a circular shape, an elliptical shape, a hexagonal shape, other polygonal shapes, and animals can be adopted. .

  Further, it is more preferable that the retaining hook is swingably attached to the mounting plate, and the retaining rod is hooked on the metal rod fitted in the fitting groove to prevent the metal rod from coming off, but this retaining hook is not necessarily provided. There is no need.

  The groove body of the fitting groove may have the same groove width in the length direction, but if the groove width on the groove body starting end side is made narrower than the groove width of other parts, the fence panel can be further prevented from coming out.

It is a schematic side view which shows preferable embodiment of the safety fence of the belt conveyor which concerns on this invention. It is a front view which shows the said embodiment. It is the side view (a) and front view (b) which show the attachment structure of the fence panel by the side of the belt return in the said embodiment. It is a figure which shows the latching hook in the said embodiment. It is a top view which shows the attachment structure of the fence panel by the side of the belt carrier in the said embodiment. It is the side view (a) and front view (b) which show 2nd Embodiment. It is the side view (a) and front view (b) which show 3rd Embodiment. It is the side view (a) and front view (b) which show 4th Embodiment.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 5 show a preferred embodiment of a safety fence for a belt conveyor according to the present invention. In the figure, a channel-shaped conveyor frame 10 extends in the longitudinal direction with its vertical side portion outside, and a driving roller and a driven roller (not shown) are rotatably supported at both front and rear ends of the conveyor frame 10. The conveyor belts BC and BR are endlessly stretched between these rollers, and the conveyor belts BC and BR are caused to travel by being driven by a drive motor (not shown).

  A plurality of short frames 11 are attached to the conveyor frame 10 at intervals. Carrier stands 12 and 13 are fixed to the short frame 11 at intervals. The carrier stands 12 and 13 are inclined. The rotation shafts of the roller (carrier roller) 14 and the horizontal roller (carrier roller) 15 are rotatably supported, and the carrier side belt BC is received by the inclined roller 14 and the horizontal roller 15.

  Further, a return stand 16 is attached to the conveyor frame 10 so as to extend downward. A return shaft of the return roller 17 is rotatably supported by the return stand 16, and the return side belt BR is received by the return roller 17.

  Further, a mounting bracket 20 is attached to the conveyor frame 10 so as to extend in the vertical direction, and a fence panel 30 is attached to the mounting bracket 20, and the fence panel 30 has a rectangular outer frame with metal bars in the vertical and horizontal directions. It has been produced over.

  The mounting bracket 20 includes a mounting plate 20A, a base plate 20B that is bent at a right angle to the mounting plate 20A, a bolt 20D that is inserted into the insertion hole 20H and the insertion long hole 20J of the base plate 20B, and a hook through which the bolt 20D is inserted. The nut 20E is screwed to the 20C and the bolt 20D.

  The hook 20C is hooked on both upper and lower sides of the channel shape of the conveyor frame 10, and the mounting bracket 20 is fixed to the conveyor frame 10 by tightening bolts 20D and nuts 20E.

  A plurality of insertion grooves 20F and 20G are formed in the front end edge side of the attachment plate 20A of the attachment bracket 20 so as to extend in the vertical direction, and the start ends of the insertion grooves 20F and 20G are opened to the front end edge of the attachment plate 20A. ing. The groove main bodies of the fitting grooves 20F and 20G are formed to have a groove width substantially equal to the outer diameter of the metal rod of the fence panel 30, and the groove main bodies of the plurality of fitting grooves 20F and 20G are adjacent fitting grooves 20G. , 20F is offset in the front-rear direction of the mounting plate 20A by, for example, a half of the groove width.

  A retaining hook 22 is swingably attached to the front edge of the mounting plate 20A, and is pulled out from the upper side to the horizontal metal rod of the fence panel 30 that has been pushed down to the bottom of the groove body of the fitting grooves 20F and 20G. The retaining hook 22 can be hooked to prevent it from coming off.

  On the other hand, the outer carrier stand 12 has a channel shape, and is fixed to the short frame 11 with the channel-shaped vertical side portion directed inward. A mounting bracket 21 is attached to the outer carrier stand 12 so as to extend in the vertical direction, and a fence panel 30 is attached to the mounting bracket 21.

  The mounting bracket 21 includes a bracket body integrally formed with the base plate 21B so that the mounting plate 21A is perpendicular to each other, and a clamping plate 21C. The carrier stand 12 is sandwiched between the base plate 21B and the clamping plate 21C. The mounting bracket 21 is attached to the carrier stand 12 by fastening with bolts 21D and nuts 21E.

  Similarly to the mounting plate 20A of the mounting bracket 20, the mounting plate 21A of the mounting bracket 21 also has a plurality of fitting grooves extending in the vertical direction, and each fitting groove is in the front-rear direction of the mounting plate 21A with respect to the adjacent fitting grooves. It is formed with an offset.

  When the fence panel 30 is set on the belt conveyor, a metal rod extending in the lateral direction of the fence panel 30 is fitted into the fitting grooves 20F and 20G of the mounting plates 20A and 21A of the mounting brackets 20 and 21 until the bottom of the groove body is reached. Include.

  Then, since the adjacent fitting grooves 20F and 20G are offset in the front-rear direction, the metal rod of the fence panel 30 is strongly held and held by the inner edge of the groove body of the fitting grooves 20F and 20G. Thus, the fence panel 30 can be easily set on the conveyor frame 10 and the carrier stand 12.

  FIG. 6 shows a second embodiment, in which the same reference numerals as those in FIGS. 1 to 5 denote the same or corresponding parts. In this example, the channel-shaped vertical side portion of the conveyor frame 10 is oriented inward, and the mounting bracket 20 is formed in a shape in which the mounting plate 20A is fixed to the vertical side portion of the base 20K having a U-shaped cross section. The bolt 20L is inserted into the insertion hole in the lower side portion of the base 20K, and the upper side portion of the channel of the conveyor frame 10 is sandwiched and tightened between the bolt 20L and the upper side portion of the base 20K. It is attached to the conveyor frame 10.

  FIG. 7 shows a third embodiment, in which the same reference numerals as those in FIGS. 1 to 6 denote the same or corresponding parts. In this example, the vertical side portion of the angle of the conveyor frame 11 is directed outward, the mounting bracket 20 is a mounting plate 20A, a base plate 20B bent at a right angle to the mounting plate 20A, an insertion hole 20H of the base plate 20B, and an insertion The bolt 20D is inserted through the long hole 20J, the hook 20C through which the bolt 20D is inserted, or the holding plate 20M and the nut 20E screwed into the bolt 20D.

  The hook 20C is hooked on the upper side of the angle of the conveyor frame 11 to tighten the bolt 20D and the nut 20E, and the presser plate 20M is pressed to the vertical side of the angle of the conveyor frame 10 to tighten the bolt 20D and the nut 20E. Thus, the mounting bracket 20 is fixed to the conveyor frame 11.

  FIG. 8 shows a fourth embodiment, in which the same reference numerals as those in FIGS. 1 to 7 denote the same or corresponding parts. In this example, the vertical side portion of the angle of the conveyor frame 11 is directed inward, and the mounting bracket 20 is formed in a shape in which the mounting plate 20A is fixed to the vertical side portion of the base 20K having a U-shaped cross section. The bolt 20L is inserted into the insertion hole in the lower side portion of the base 20K, and the upper side portion of the angle of the conveyor frame 11 is sandwiched and tightened between the bolt 20L and the upper side portion of the base 20K. Attached to the frame 11.

  In the above, the fence panel 30 is set on each of the carrier side BC and the return side BR of the conveyor belt. However, the fence panel 30 having a size extending over both the carrier side BC and the return side BR is set. Also good.

  Further, the mounting plate 20A of the mounting bracket 20 may be mounted so as to extend in the horizontal direction instead of the vertical direction, and a metal bar extending in the vertical direction of the fence panel 30 may be fitted into the fitting groove.

  Further, the fence panel is configured by extending a metal bar in the vertical direction and the horizontal direction on the outer frame, but may be configured by hanging the metal bar only in either the vertical direction or the horizontal direction.

10, 11 Conveyor frame 12 Carrier stand 20 Mounting bracket 20A Mounting plate 20B Base plate 20C Hook 20D Bolt 20E Nut 20K Base 20L Bolt 20M Holding plate 21 Mounting bracket 21A Mounting plate 21B Base plate 21C Holding plate 30 Fence panel

Claims (8)

In the safety fence of the belt conveyor in which the fence panel is installed by the mounting bracket on the side of the conveyor belt of the belt conveyor in which the conveyor belt is stretched endlessly by the conveyor frame,
While the said fence panel (30) is comprised by spanning a some metal rod to an outer frame in the horizontal direction and / or the vertical direction,
The mounting bracket (20) has a mounting plate (20A) extending in the vertical direction or the horizontal direction, and a plurality of fitting grooves (20F, 20G) are adjacent to the mounting plate (20A) in the vertical direction or the horizontal direction. The plurality of fitting grooves (20F, 20G) are formed in a shape in which the start end of the groove body extending in the vertical direction or the horizontal direction is opened to the front end edge of the mounting plate (20A). The groove (20F) has a groove width into which the metal rod can be fitted, and at least two fitting grooves are formed offset in the front-rear direction of the mounting plate (20A),
The mounting bracket (20) is attached to the conveyor frame (10), the metal rod is fitted into the fitting groove (20F, 20G), and the at least two offset fitting grooves (20F, 20G) are fitted. A safety fence for a belt conveyor, wherein the fence panel (30) is attached to the conveyor frame (10) by being sandwiched between inner edges of the groove main body. The conveyor belt is stretched endlessly by the conveyor frame, the carrier roller is rotatably supported by the carrier stand, and the belt belt is received by the carrier side belt. In the safety fence of the belt conveyor
While the said fence panel (30) is comprised by spanning a some metal rod to an outer frame in the horizontal direction and / or the vertical direction,
The mounting bracket (20) has a mounting plate (20A) extending in the vertical direction or the horizontal direction, and a plurality of fitting grooves (20F, 20G) are adjacent to the mounting plate (20A) in the vertical direction or the horizontal direction. The plurality of fitting grooves (20F, 20G) are formed in a shape in which the start end of the groove body extending in the vertical direction or the horizontal direction is opened to the front end edge of the mounting plate (20A). The grooves (20F, 20G) have a groove width into which the metal rod can be fitted, and at least two fitting grooves (20F, 20G) are formed offset in the front-rear direction of the mounting plate (20A). ,
The mounting bracket (20) is attached to the conveyor frame (10) or the carrier stand (12), the metal rod is fitted into the fitting grooves (20F, 20G), and the at least two offset fitting grooves are provided. (20F, 20G) A safety fence for a belt conveyor characterized in that the fence panel (30) is attached to a conveyor frame (10) or a carrier stand (12) by being sandwiched by inner edges of the groove main body. .   The plurality of fitting grooves (20F, 20G) are formed to be offset in the front-rear direction of the mounting plate (20A) with respect to adjacent fitting grooves (20G, 20F). Safety fence for belt conveyor.   The conveyor frame (10) has a channel shape, and the mounting bracket (20) has a shape in which the base plate (20B) and the mounting plate (20A) are integrally formed at right angles to each other, and the base plate (20B) The hook (20C) is inserted into the bolt (20D) that has been inserted through the insertion hole of (), and is screwed into the nut (20E), and the hook (20C) is directed to the longitudinal side of the channel shape outward. The safety fence for a conveyor belt according to claim 1 or 2, wherein the mounting bracket (20) is attached to the conveyor frame (10) by being hooked and tightened on both upper and lower side portions of (10).   The conveyor frame (10) has a channel shape, and the mounting bracket (20) has a shape in which a mounting plate (20A) is fixed to a vertical side portion of a base (20K) having a U-shaped cross section. Between the bolt (20L) inserted through the insertion hole in the lower side or upper side of the base (20K) and the upper side or lower side of the base (20K) so that the channel-shaped vertical side is directed inward. The safety fence for the conveyor belt according to claim 1 or 2, wherein the mounting bracket (20) is attached to the conveyor frame (10) by sandwiching an upper side portion or a lower side portion of the conveyor frame (10).   The conveyor frame (10) has an angle shape, the mounting bracket (20) has a shape in which the base plate (20B) and the mounting plate (20A) are integrally formed so as to be perpendicular to each other, and the base plate (20B) The hook (20C) or the presser plate (20M) is inserted into the two bolts (20D) inserted through the insertion holes of), the nut (20E) is screwed, and the hook (20C) is attached to the angle-shaped vertical side portion. The mounting bracket (20) is attached to the conveyor by being hooked and tightened on the upper side or lower side of the conveyor frame (10) oriented outward and the pressing plate (20M) being pressed against the vertical side. The safety fence of the conveyor belt of Claim 1 or 2 attached to the flame | frame (10).   The conveyor frame (10) has an angle shape, and the mounting bracket (20) has a shape in which a mounting plate (20A) is fixed to a vertical side portion of a base (20K) having a U-shaped cross section. Between the bolt (20L) inserted through the insertion hole in the lower side or upper side of the base (20K) and the upper or lower side of the base (20K) with the angled vertical side pointing inward The safety fence for the conveyor belt according to claim 1 or 2, wherein the mounting bracket (20) is attached to the conveyor frame (10) by sandwiching an upper side portion or a lower side portion of the conveyor frame (10). The conveyor frame or carrier stand (12) has a channel shape, and the mounting bracket (21) is clamped with a bracket body integrally formed with the base plate (21B) so that the mounting plate (21A) is perpendicular to each other. Plate (21C), and sandwiching the conveyor frame or carrier stand (12) between the base plate (21B) and the clamping plate (21C), and tightening and fixing with bolts (21D) and nuts (21E), 3. A conveyor belt safety fence according to claim 2, wherein said mounting bracket (21) is attached to said conveyor frame or carrier stand (12).

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