JP5501050B2 - Telescopic beam suspension device - Google Patents

Description

  The present invention relates to a telescopic beam hanging device provided with a telescopic beam used for transporting building materials and the like with a crane.

As a lifting device equipped with telescopic beams, there are three telescopic booms (beams) of different lengths, and each boom is provided with a roller in order to expand and contract each boom, and a clamp is provided below each roller. The device is known. (See Patent Document 1)
JP-A-8-189196

  In the hanging device described in Patent Document 1, the clamps at both ends of the telescopic beam are fixed, and the other clamps are provided at the lower part of the roller, and extend and contract the three beams having different lengths arranged side by side. Therefore, the clamp has a structure that expands and contracts at equal intervals, and the roller rolls on the lower side plate of the adjacent beam, so there is a step between the expandable beams by the thickness of the side plate that constitutes the beam. There has been a problem that a difference in size occurs in the height of the clamp between the expanded and contracted beams.

  In addition, when the roller moves to another beam during the expansion / contraction operation of the slide beam, the step of the beam generates a backlash, which hinders the smooth expansion / contraction operation of the beam. Since there is no means for fixing the position, looseness occurs between the slide beams. Further, when the clamp position is a stepped portion of the beam, the clamp position is not stable.

It solves the problems of the present invention, the main beam and is a bottom slidably arranged on the main beam, with two sliding beams slide in opposite directions to face each other, the slide beam, vertical Two upper square pipes and lower square pipes, and opposite side plates and outer side plates that connect the opposite side surfaces and the other side surfaces of the upper and lower square pipes, and protrude downward from the opposite side plates. A hook mounting hole that matches the expansion / contraction pitch width of the slide beam is provided in the protruding portion, and the hook is engaged with the hook mounting hole of the opposite side plate facing in the main beam, thereby adjusting the expansion / contraction length of the slide beam. It is characterized by that.

  The main beam has a guide roller and a sliding bearing that are in sliding contact with the side surface of the slide beam at the end, and a sliding bearing that is in sliding contact with the upper and lower surfaces of the beam. The sliding beam is an end on the side that is always inscribed in the main beam. And a guide roller that slides on the inner upper surface of the main beam, a sliding bearing that slides on the inner lower surface, a guide roller that slides on the inner side surface of the main beam, and a guide roller that slides on the side surface of the other slide beam. And

  The slide beam has insertion holes provided at intervals matching the expansion / contraction pitch width of the slide beam, the insertion holes are matched with the fixed pin insertion holes provided in the main beam, and the fixed pins are fitted into the insertion holes. It is characterized in that the main beam and the slide beam are fixed.

According to the present invention, the main beam and two slide beams that are slidably arranged on the bottom surface of the main beam and slide in opposite directions to each other are provided, and the two slide beams are provided above and below. An upper square pipe, a lower square pipe, an opposed side plate and an outer side plate connecting the opposed side surface and the other side surface of the upper square pipe and the lower square pipe, and a projecting portion of the slide beam projecting downward from the opposed side plate . A hook mounting hole that matches the expansion / contraction pitch width is provided , and the hook is attached to the hook mounting hole of the opposite side plate facing in the main beam so that the slide beam can slide on the bottom surface of the main beam. in parallel, and, since the hook mounting hole is provided in the lower part of the slide beam, the difference in height to the hook mounting position of each slide beam and not, depending on the tool hanging exactly The object to be transported can be lifted or hung and transported, and there is no backlash during expansion and contraction of both slide beams, and because the expansion pitch of the slide beams and the pitch interval of the hook mounting holes are the same, By attaching the hooks by matching the hook mounting holes in a state where both the slide beams are arranged in parallel, both the slide beams can be fixed more reliably.

  The slide beam has an opposite side plate fixed to one side surface of the square pipe and an outer side plate fixed to the other side surface. The opposite side plate faces the opposite side plate of the other slide beam, and from the main beam. It has a projecting part that protrudes downward and has hook mounting holes. The hook mounting holes on the opposite side plates of both slide beams are matched, and the hooks are engaged with the hook mounting holes. The position of can be fixed.

  The main beam has a guide roller and a sliding bearing that are in sliding contact with the side surface of the slide beam at the end, and a sliding bearing that is in sliding contact with the upper and lower surfaces of the beam. The sliding beam is an end on the side that is always inscribed in the main beam. And a guide roller that is in sliding contact with the inner upper surface of the main beam, a sliding bearing that is in sliding contact with the inner lower surface, a guide roller that is in sliding contact with the inner side surface of the main beam, and a guide roller that is in sliding contact with the side surface of the other slide beam. In this way, the slide beam is fixed to the end of the main beam and the end of the slide beam on the side inscribed in the main beam through the guide roller and the sliding bearing. Since the occurrence of loosening and shaking between the main beams and between the slide beams is prevented, the slide beams can be extended accurately and smoothly. It is possible to perform the carrying operation of the suspended load by the operation and hanger.

  The slide beam has insertion holes provided at intervals matching the expansion / contraction pitch width of the slide beam, the insertion holes are matched with the fixed pin insertion holes provided in the main beam, and the fixed pins are fitted into the insertion holes. By inserting the main beam and the slide beam, the expansion / contraction pitch width of the slide beam can be adjusted easily and reliably, and the expansion / contraction position can be fixed.

(A) The principal part side view of the hanger apparatus of this invention. (B) Front view of end of slide beam. The top view of FIG. (A) Side view of main part of opposed side plate of slide beam, (b) Front view of inner end. FIG. 2 is an end front view of the main beam of FIG. 1. FIG. 2 is a front view of the central part of the main beam in FIG. Side surface sectional drawing at the time of the slide beam accommodation of the hanger apparatus of this invention. The plane sectional view at the time of slide beam accommodation of the hanger apparatus of the present invention. Side surface sectional drawing at the time of slide beam expansion | extension of the hanger apparatus of this invention. The plane sectional view at the time of slide beam extension of the hanger apparatus of the present invention. Explanatory drawing of a main beam and a slide beam.

  Hereinafter, modes for carrying out the present invention will be described.

1 is a main beam, 2a and 2b are two slide beams arranged side by side so as to be slidable in opposite directions on the bottom surface of the main beam 1, and the length of the slide beams 2a and 2b is as shown in FIG. The length of the main beam 1 is substantially the same as that of the main beam 1 so that the main beam 1 can be accommodated when contracted. 3a and 3b are two rectangular pipes provided vertically in the vertical direction. The opposite side plate 4 is fixed to one side surface of the upper rectangular pipe 3a and the lower rectangular pipe 3b, and the outer side plate 5 is fixed to the other side surface. The two rectangular pipes 3a and 3b are firmly connected to form the slide beams 2a and 2b. It is also possible to make the square pipe one piece of rectangular cross section and omit the outer side plate. The opposed side plates 4 of the slide beams 2a and 2b are opposed to each other in the main beam 1, and have a protruding portion 4a protruding downward from a guide groove 1a provided in the main beam 1 at the lower portion. Are provided with hook mounting holes 6 provided at even intervals and evenly divided. The hook mounting hole 6 engages the hook 7, and the hook mounting hole 6 of the opposing side plate 4 facing in the main beam 1 is matched to engage the hook 7, so that the extension length of the slide beams 2 a and 2 b can be increased. Can be adjusted and fixed.
Reference numerals 8a and 8b are axially attached to two brackets 9a and 9b provided on the inner side surface of the end of the main beam 1, and guide rollers 10 that circumscribe and roll against the opposing side plate 4 at two upper and lower positions. Is a sliding bearing that is slidably in contact with the outer side plate 5, and the guide rollers 8 a and 8 b and the sliding bearing 10 sandwich the slide beams 2 a and 2 b from both sides at the end of the main beam 1. Guide and fix the left and right positions of the slide beams 2a, 2b. 11a and 11b are sliding bearings which are provided on the upper and lower surfaces inside the end of the main beam 1 and which are in sliding contact with the upper surface of the upper rectangular pipe 3a and the lower surface of the lower rectangular pipe 3b. The bearings 11a and 11b of the main beam 1 At the end, the slide beams 2a and 2b are guided from the upper and lower surfaces, and the vertical positions of the slide beams 2a and 2b are fixed. The slide beams 2a and 2b are fixed to the left and right sides and the vertical position at the end of the main beam 1, and the occurrence of loosening in the horizontal and vertical directions is prevented.

  12a and 12b are attached to guide roller mounting brackets 13a and 13b fixed to the ends of the two rectangular pipes 3a and 3b that are always inscribed in the main beam 1, and are inscribed in the inner side surface of the main beam 1. Guide rollers 14a and 14b are mounted on the guide roller mounting brackets 13a and 13b, and the guide rollers 15 are connected to the opposite side plate 4 of the other opposite slide beam 2a or 2b to roll. A guide roller 17, which is installed on the upper part of a guide roller mounting bracket 16 fixed to the upper end portion of the rectangular pipe 3 a that is always inscribed in the main beam 1 and rolls inscribed on the inner upper surface of the main beam 1, This is a sliding bearing fixed to the lower surface of the lower rectangular pipe 3 b and slidably contacting the inner lower surface of the main beam 1. The slide beams 2a and 2b are circumscribed on the opposite side plate 4 of the other slide beam 2a or 2b facing the guide rollers 12a and 12b inscribed on the inner side surface of the main beam 1 at the end on the side always inscribed in the main beam 1. The guide rollers 14a and 14b that guide the left and right sides of the slide beams 2a and 2b fix the left and right positions of the slide beams 2a and 2b. Further, the vertical direction of the slide beams 2a and 2b is guided by a guide roller 15 inscribed in the inner upper surface of the main beam 1 and a sliding bearing 17 which is fixed to the lower surface of the lower rectangular pipe 3b and slidably contacts the inner lower surface of the main beam 1. The vertical position is fixed.

  The slide beams 2a and 2b are guide rollers 14a that circumscribe the opposite side plate 4 of the other slide beam that faces the guide rollers 12a and 12b that are inscribed in the inner side surface of the main beam 1 at the end that is always inscribed in the main beam 1. 14b are guided on the left and right sides, and are guided in the vertical direction by a guide roller 15 inscribed in the inner upper surface of the main beam 1 and a sliding bearing 17 in sliding contact with the inner lower surface of the main beam 1. The slide beams 2a and 2b are fixed at both the left and right sides and the vertical position at the end on the side that is always inscribed in the main beam 1, and the occurrence of loosening in the horizontal and vertical directions is prevented.

  As described above, according to the present invention, the slide beams 2a and 2b are fixed in the horizontal and vertical positions at the end of the main beam 1 and the end of the main beam 1 on the side that is always inscribed. Occurrence of looseness between the slide beam and the main beam and between the slide beams 2a and 2b during the expansion / contraction operation and work of 2b is prevented.

  Reference numerals 18a and 18b are fixed to the upper surface of the upper rectangular pipe 3a and the lower surface of the lower rectangular pipe 3b, and are sliding bearings that are in sliding contact with the inner upper surface and the lower surface of the main beam 1. The holes 19b are fixed pin insertion holes provided at intervals matching the hook mounting holes 6 provided in the slide beams 2a and 2b, and 20 is inserted into the insertion holes 19 to fix the main beam 1 and the slide beams 2a and 2b. A fixing pin 21 is a hanging bracket.

  When adjusting and fixing the length of the slide beam, the expansion / contraction pitch width of the slide beams 2a and 2b is adjusted according to the size of the lifting member, and the hook mounting holes 6 of the slide beams 2a and 2b are aligned. The main beam 1 and the slide beam 2a are fitted by aligning the fixed pin insertion hole 19a of the main beam 1 with the fixed pin insertion hole 19b of the slide beams 2a and 2b and fitting the fixed pin 20 into the fixed pin insertion holes 19a and 19b. 2b is fixed. After the lifting operation is finished, the fixing pin 20 is pulled out and the slide beams 2a and 2b are slid into the main beam 1 and stored.

DESCRIPTION OF SYMBOLS 1 Main beam 1a Guide groove 2a, 2b Slide beam 3a Upper square pipe 3b Lower square pipe 4 Opposite side plate 4a Projection part 5 Outer side plate 6 Hook mounting hole 7 Hook 8a, 8b Guide roller 9a, 9b Guide roller mounting bracket 10 Sliding bearing 11a , 11b Sliding bearings 12a, 12b Guide rollers 13a, 13b Guide roller mounting brackets 14a, 14b Guide rollers 15 Guide rollers 16 Guide roller mounting brackets 17 Sliding bearings 18a, 18b Sliding bearings 19a, 19b Fixed pin insertion holes 20 Fixed pins 21 Suspension bracket

Claims (3)

A main beam, slidably disposed in parallel to the bottom surface of the main beam, with two sliding beams slide in opposite directions to face each other, the slide beam, upper square pipe and a lower provided two vertically A square pipe, an opposing side plate and an outer side plate that connect the opposing side surface and the other side surface of the upper and lower square pipes, and a protrusion projecting downward from the opposing side plate matches the expansion / contraction pitch width of the slide beam. a hook mounting hole match provided, the main by engaged hooks into the hook mounting hole of the opposite side plate that faces in the beam, telescopic beam hanger apparatus characterized by adjusting the stretching length of the slide beam. The main beam has a guide roller and a sliding bearing that are in sliding contact with the side surface of the slide beam, and a sliding bearing that is in sliding contact with the upper surface and the lower surface of the beam. The sliding beam is provided at an end portion on the side inscribed in the main beam. And a guide roller slidably contacting the inner upper surface of the main beam, a sliding bearing slidably contacting the inner lower surface, a guide roller slidably contacting the inner side surface of the main beam, and a guide roller slidably contacting the opposite side plate of the other slide beam. The telescopic beam suspension device according to claim 1 . The slide beam has insertion holes provided at intervals corresponding to the expansion / contraction pitch width of the slide beam, the insertion holes are matched with the fixed pin insertion holes provided in the main beam, and the fixed pins are inserted into the insertion holes, The telescopic beam suspension device according to claim 1 or 2, wherein the main beam and the slide beam are fixed.

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