JP5355230B2 - Lifting platform - Google Patents

Description

  The present invention relates to an elevating scaffolding platform for working at heights.

  This type of lifting type scaffolding platform is provided with a lifting part formed by connecting a plurality of lifting frames in multiple stages through a lifting mechanism at the upper part of the grounding table, and a work floor and this A scaffold frame having a handrail portion standing around the work floor is provided.

  In addition, lower ends of both side vertical frame portions of the ladder body are pivotally attached to opposite sides of each of the lifting frames of the lifting portion, and the ladder body is provided so as to be rotatable up and down with respect to the lifting frame. At the upper end of the vertical frame on both sides of the ladder body, there is provided a latching portion that can be latched on the opposite side of the lifting frame when the ladder body is activated and placed in the standing state. When the ladder body is installed between the upper and lower opposing sides by hooking the stoppers on the opposite sides of the upper lift frame, the upper lift frame is raised relative to the lower lift frame by the standing ladder body. The ladder can be used to move the elevator part up and down, and when the latch part is detached from the opposite side and the ladder body is lowered on the elevator frame, the lower part is raised and lowered. Lower the upper lifting frame with respect to the frame via the lifting mechanism Allowed to have a structure that can be folded when no bulky lifting unit (e.g., see Patent Document 1.).

Japanese Utility Model Publication No. 6-36167

  In this type of lifting platform, the lower end of the vertical frame on both sides of the ladder is pivotally attached to the opposite side of the lifting frame, and the latching at the upper end of the vertical frame on both sides of the ladder is also raised and lowered. It is comprised so that it may latch on the opposing side part of a flame | frame.

  Therefore, so that the pivoting position of the ladder body and the latching position of the latching part are not doubled (so that the latching part can be latched on the opposite side by avoiding the pivoting position of the ladder body), for example, The ladder body pivotally attached to the second-stage lifting frame has a narrower width (width between the vertical frame portions on both sides, ie, the width between the hooks) than the first-stage ladder body, The ladder that is pivotally mounted is configured so that the width of the ladder is different from the top and bottom, such as making the width of the ladder wider than the ladder of the second stage. It was difficult to move up and down unexpectedly, as it was necessary to move up and down while checking safety by paying attention to the position where you put your foot.

  The present invention seeks to solve the problems of such a conventional lifting platform, and to solve this problem. The ladder width is substantially constant, and it is very easy to move up and down. It provides a groundbreaking lifting platform that will improve the performance.

  The gist of the present invention will be described with reference to the accompanying drawings.

  On the upper part of the grounding stand 1, there is provided an elevating part 4 formed by connecting a plurality of elevating frames 2 in upper and lower stages via an elevating mechanism 3. An elevating type scaffolding platform provided with a scaffolding frame 7 having a handrail portion 6 standing on the opposite side 8 of each elevating frame 2 of the elevating unit 4 on both side vertical frame portions 10 of the ladder body 9. The lower end portion is pivotally attached, and the ladder body 9 is provided so as to be rotatable up and down with respect to the elevating frame 2. The ladder body 9 is activated at the upper end portions of the vertical frame portions 10 on both sides of the ladder body 9 and is erected. In this case, a latching portion 11 that can be latched on the opposing side portion 8 of the lifting frame 2 is provided, and the latching portion 11 is latched and connected to the opposing side portion 8 of the upper lifting frame 2 to thereby form a ladder body. 9 is installed between the upper and lower opposing side portions 8, the upper ladder frame 9 is placed above the lower lift frame 2 by the standing ladder body 9. When the descending frame 2 can be held in the raised state, and the latching portion 11 is hooked / removed from the opposite side portion 8 and the ladder body 9 is lowered on the lifting frame 2, the upper lifting frame 2 with respect to the lower lifting frame 2. In the lift-type scaffolding platform configured to be lowered by the lift mechanism 3, a pair of bearing portions 12 are provided so as to protrude upward on both sides of the opposite side portion 8 of each lift frame 2. The lower end portions of the vertical frame portions 10 on both sides of the ladder body 9 are pivotally connected between the projecting tip portions of the pair of bearing portions 12, and the gap between the base ends of the pair of bearing portions 12 is used as a latching gap portion 13. The hooking portion 11 is formed in a hook shape that is inserted into the hooking gap portion 13 and can be hooked on the opposite side portion 8 of each lifting frame 2, and the hooking portion 11 is formed into a hooking gap. When inserted into the portion 13 and hooked to the opposite side 8, the vertical frame portions 10 on both sides of the upper and lower ladder bodies 9 are arranged in a substantially straight line in the vertical direction. Those of the elevating scaffold platform, characterized in that configuration and the.

  The hooking portion 11 has a width smaller than the width of the hooking gap 13 and is inserted into the hooking gap 13 and hooked to the opposite side 8 of the lifting frame 2. 2. A structure comprising: a hook body 14 to be obtained; and a closing body 16 that closes an opening 15 of the hook body 14 and keeps the opposing side portions 8 of the elevating frames 2 in a retaining state. This relates to the described lifting platform.

  An opening / closing portion 17 for entering and exiting the work floor 5 is provided on the handrail portion 6 so as to correspond to the position of the ladder body 9 so as to be openable and closable. The handrail rotation mechanism 18 configured to be superposed on the portion 6 and rotating the handrail portion 6 superposed on the opening / closing portion 17 outwardly and downwardly with respect to the work floor 5 to place the handrail rotation mechanism 18 along the lift portion 4 is provided. 2. The handrail rotation mechanism 18 provided on the scaffold frame 7 is provided with an upright holding mechanism 19 which can hold and hold the handrail portion 6 in a standing state with respect to the work floor 5. , 2 relates to the lifting type scaffolding platform according to any one of the above.

  Further, the opening / closing part 17 is provided with unlockable locking means 24 for locking the closed state of the opening / closing part 17 and the state where the opening / closing part 17 is rotated and overlapped with the handrail part 6. This relates to the lifting platform described in 3.

  The handrail rotating mechanism 18 pivotally attaches the handrail portion 6 to the scaffold frame 7, and the handrail portion 6 pivots outward and downward with respect to the work floor 5 with the pivoting portion 20 as a fulcrum. The erecting holding mechanism 19 is configured so as to be in a state of being installed along the elevating part 4, and the scaffold frame 7 is provided with a inserted part 21 for inserting and locking the lower part of the handrail part 6. By inserting and locking the lower portion of the handrail portion 6 to the inserted portion 21, the handrail portion 6 is held upright with respect to the work floor 5 and from the inserted portion 21 to the lower portion of the handrail portion 6. 5. The structure according to claim 3, wherein the standing holding is released and the handrail portion 6 is configured to rotate about the pivotally attached portion 20 by removing the boss. This relates to a lifting platform.

  The pivoting portion 20 is provided with a shaft portion 22 on the scaffold frame 7 or the handrail portion 6, and a long hole-shaped bearing hole portion 23 that rotatably supports the shaft portion 22 is provided on the handrail portion 6 or the scaffolding. Provided on the frame 7, the handrail portion 6 pivots outward and downward with respect to the work floor 5 with the shaft portion 22 as a fulcrum, and is placed along the lift portion 4, and the bearing hole portion 23 is formed in a long hole shape, and the position of the shaft portion 22 in the bearing hole portion 23 is changed so that the handrail portion 6 can be freely inserted into and removed from the inserted portion 21. The lifting / lowering scaffold according to claim 5.

  Further, the opposing side portions 8 of the elevating frames 2 are provided so as to protrude outward from the work floor 5 of the scaffold frame 7, and the ladder constructed between the opposing side portions 8 of the upper and lower elevating frames 2. The lifting / lowering scaffolding according to any one of claims 1 to 6, wherein the body 9 is configured to project outward from the work floor 5.

  Since the present invention is configured as described above, the latching portion at the upper end of the vertical frame on both sides of the ladder is inserted into the latching gap below the lower end of the vertical frame on both sides of the ladder. Because it can be hooked on the opposite side, and the vertical frame parts on both sides of the upper and lower ladders are arranged in a straight line in the vertical direction, the load transmitted from the scaffold frame (work floor) to the vertical frame part of the ladder body It is directly supported by the vertical frame part of the ladder body that is almost directly underneath, and it will exhibit high load resistance, and since the width of the ladder body can be unified, it is between the upper and lower multistage lifting frames. A ladder structure that is extremely easy to move up and down with a constant width of the ladder to be built can be realized, and it becomes an epoch-making lift platform with excellent practicality.

  In the invention according to claim 2, the design of the latching portion that can be securely inserted into the latching gap between the base ends of the pair of bearings and latched on the opposite side of the lifting frame is simply realized. It will be an elevating type scaffolding with a configuration that is more practical and possible.

  Further, in the invention of claim 3, the handrail part can freely enter and exit the work floor by the opening and closing part, and the handrail part ensures the safety at the time of working at a high place. It can be easily folded up into a compact storage state, and it becomes an elevating type scaffolding with a structure that is more practical.

  Further, in the invention described in claim 4, the opening / closing part can be locked in the closed state to ensure the safety during the work, and the handrail part can be easily rotated in the retracted state. It will be a lifting and lowering scaffold with an excellent structure.

  Further, in the invention described in claim 5, while the structure is such that the handrail part can be securely held upright when working at a high place, the handrail part can be easily folded and made compact when not in use. It will be an elevating type scaffolding with a configuration that is more practical and possible.

  Further, in the invention described in claim 6, the lower part of the handrail part can be freely inserted and removed so that the pivoting part for pivotally supporting the handrail part can be easily designed and realized. It becomes an elevating type scaffolding.

  Further, in the invention according to claim 7, there is provided a lifting and lowering scaffolding having a structure more excellent in practicality in which the operator is less likely to have fear when moving between the ladder body and the work floor, and is easily moved up and down. Become.

It is a perspective view which shows the use condition of a present Example. It is the partial enlarged front view which notched a part of the present Example. It is the partial expansion disassembled perspective view which shows the pivot attachment structure of the ladder body of this Example, and the latching structure of a latching part. It is the partial expanded side view which shows the pivot attachment structure of the ladder body of this Example, and the latching structure of a latching part. It is the elements on larger scale which show the pivot attachment structure of the ladder body of a present Example, and the latching structure of a latching part. It is a partial expansion perspective view which shows the opening frame of the scaffold frame and opening / closing part of a present Example. It is a partial expansion perspective view which shows the state which locked the opening-and-closing part of the present Example to the handrail part in the superposition | polymerization state. It is a partial expanded side view which shows the standing holding mechanism and handrail rotation mechanism of a present Example. It is operation | movement explanatory drawing of the handrail rotation mechanism of a present Example. It is a schematic front view which shows the storage state of a present Example.

  Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  The height of the scaffolding frame 7 is adjusted according to the work purpose by grounding the grounding platform 1 and adjusting the lifting / lowering part 4, so that the worker can work at a high place on the work floor 5 surrounded by the handrail part 6. Do. In addition, the operator can move up and down between the work floor 5 and the ground contact surface by using a ladder body 9 constructed between the opposing side portions 8 of the upper and lower multi-stage elevating frames 2 constituting the elevating unit 4.

  Further, the lifting / lowering adjustment of the lifting / lowering section 4 is performed by raising the upper lifting / lowering frame 2 by the lifting / lowering mechanism 3 with respect to the lower lifting / lowering frame 2, and starting the ladder body 9 from the lower lifting / lowering frame 2. When the hook 11 at the upper end is hooked on the opposing side 8 of the upper lifting frame 2, the ladder body 9 is installed between the upper and lower opposing sides 8, and the lower lifting frame 2 with respect to the lower lifting frame 2. Can be held in the raised state, conversely, when the ladder body 9 is lowered on the lifting frame 2 by hanging the latching portion 11 away from the opposing side portion 8, the upper lifting frame 2 is lifted by the lifting mechanism 2 with respect to the lower lifting frame 2. 3 can be lowered.

  That is, the height of the elevating unit 4 can be made different depending on how many of the upper and lower multistage elevating frames 2 are held in the raised state, and the scaffold can be selected by selecting the number of elevating frames 2 held in the raised state. The height of the frame 7 (work floor 5) can be adjusted up and down.

  Further, the ladder body 9 of the present invention has a pair of bearing portions 12 projecting upward on both sides of the opposing side portion 8 of each lifting frame 2, and between the projecting tip portions of the pair of bearing portions 12. By pivotally attaching the lower ends of the vertical frame portions 10 on both sides, the vertical frame 2 can be pivoted up and down, and the vertical frame portions of the ladder body 9 are located between the base end portions of the pair of bearing portions 12. This is a latching gap 13 through which a hook-shaped latching portion 11 provided at the upper end of 10 can be inserted.

  Therefore, when the latching portion 11 is inserted into the latching gap portion 13 and latched on the opposing side portion 8, the vertical frame portions 10 on both sides of the upper and lower ladder bodies 9 are juxtaposed in a substantially straight line. Become.

  Therefore, when an operator performs work on the work floor 5 of the scaffold frame 7, the load from the scaffold frame 7 is supported by the ladder body 9 and transmitted to the lower lift frame 2. Since the load transmitted to the portion 10 is directly supported by the vertical frame portion 10 that exists almost immediately below, the conventional vertical frame portions 10 are arranged in different positions in the vertical direction. Compared with the structure, the elevating frame 2 is less likely to be deformed, and the elevating part 4 exhibits high load resistance.

  Further, the ladder body 9 of the present invention which can be hooked by inserting the latching portion 11 at the upper end of the vertical frame portion 10 on both sides substantially below the lower end portion of the vertical frame portion 10 (latching gap portion 13) is as follows. Since it is not necessary to provide a different width (width between the vertical frame portions 10 on both sides) for each lifting frame 2 as in the conventional product, the width of each lifting frame 2 can be unified.

  Accordingly, a ladder structure that is easy to move up and down side by side with a certain horizontal width can be realized without the horizontal widths of the ladder bodies 9 installed between the upper and lower multistage elevating frames 2 being different vertically. .

  When not in use, when all the ladder bodies 9 are lowered on the elevating frame 2 and all the elevating frames 2 are lowered via the elevating mechanism 3, the bulk (height) in which the vertical intervals of the elevating frames 2 are reduced. Can be folded without any

  Further, for example, an opening / closing portion 17 for entering and exiting the work floor 5 is provided on the handrail portion 6 so as to correspond to the position of the ladder body 9, and the opening / closing portion 17 can be opened and closed. The handrail rotation mechanism 18 is configured to be superposed on the handrail portion 6, and the handrail portion 6 superposed on the opening / closing portion 17 is rotated outward and downward with respect to the work floor 5 so as to be placed along the lift portion 4. Is provided on the scaffold frame 7, and the handrail rotating mechanism 18 includes a standing release holding mechanism 19 that holds the handrail portion 6 in a standing state with respect to the work floor 5. The handrail unit 6 can be held upright with respect to the work floor 5 by the standing holding mechanism 19 to ensure the safety of the operator, and the door opening / closing unit 17 can be opened and closed between the work floor 5 and the ladder body 9. The operator can come and go freely. Further, when not in use, the opening / closing part 17 is pivoted to open and superposed on the handrail part 6, and when the standing holding mechanism 19 is released, the handrail turning part 18 is superposed on the handrail turning mechanism 18 by the handrail turning mechanism 18. Since it can be turned outward and downward with respect to the work floor 5, the handrail portion 6 in which the opening and closing portion 17 overlaps can be placed in a compact storage state along the lifting and lowering portion 4. At this time, the handrail portion 6 is also Since the opening / closing part 17 can also be made compact without being removed from the scaffold frame 7, there is no fear of the handrail part 6, the opening / closing part 17 being lost.

  Further, for example, if the opening / closing part 17 is provided with a lock means 24 that can be unlocked to lock the closed state of the opening / closing part 17 and the state where the opening / closing part 17 is superposed on the handrail part 6, the opening / closing part 17 Can be locked in a closed state to ensure the safety of the worker on the work floor 5, and when the handrail part 6 is rotated to be in the retracted state, the opening / closing part 17 is freely rotated and operated. Since it can be locked in a superposed state on the handrail 6 so as not to hinder the above, it is excellent in operability.

  Further, for example, the opposing side portions 8 of each of the lifting frames 2 are provided so as to protrude outward from the work floor 5 of the scaffold frame 7 and are laid between the opposing side portions 8 of the upper and lower lifting frames 2. If the ladder body 9 is configured to project outward from the work floor 5, the ladder body 9 projects outward from the work floor 5, thereby moving from the ladder body 9 to the work floor 5. Even when moving from the work floor 5 to the ladder body 9, the operator can go up and down in the posture described above while facing the work floor 5, so that it is difficult to hold up and down at this time. It will be done easily.

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

  In this embodiment, an elevating part 4 is provided on the upper part of the grounding platform 1, and a scaffold frame 7 having a work floor 5 and a handrail part 6 standing around the work floor 5 is provided on the upper part of the elevating part 4. ing.

  Specifically, in the grounding stand 1 of the present embodiment, support legs 26 are suspended from four corners of a main frame 25 having a substantially rectangular frame shape in plan view, and casters 27 are provided at the lower ends of the support legs 26.

  Each support leg 26 is provided with a jack portion 28 that protrudes laterally so that the caster 27 floats from the grounding surface so that the caster 27 cannot move, and the jack portion 28 extends horizontally with the support leg 26 as a fulcrum. It is provided so that it can turn freely.

  The elevating unit 4 according to the present embodiment is configured by connecting the elevating frame 2 having a substantially rectangular frame shape in plan view via an elevating mechanism 3 in upper and lower stages (five levels in the drawing).

  The lifting mechanism 3 has a configuration in which the upper and lower sides of one (longitudinal) opposing side portion 29 of each of the upper and lower multistage lifting frames 2 are connected by an X-shaped support frame body 30. Further, the support frame 30 is pivotally attached at the central portion, and is configured such that the elevation portion 4 is raised and lowered by changing the crossing angle of the support frame 30 so that the space between the upper and lower lift frames 2 is widened.

  In the figure, reference numeral 31 denotes a mounting portion on which the upper lifting frame 2 is placed when the upper and lower lifting frames 2 are narrowed by the lifting mechanism 3, and 32 denotes the lifting frame 2 placed on the placement portion 31. The holding tool 33 is held in a state, 33 is a locking portion for locking the holding tool 32, and 34 is an elastic body for urging the upper lifting frame 2 in the upward direction with respect to the lower lifting frame 2. When the elevating unit 4 is extended upward by the body 34, the elevating frame 2 can be raised with a light force, and when the elevating unit 4 is lowered, the elevating frame 2 can be lowered at a safe speed. .

  Moreover, the lower end part of the both side vertical frame part 10 of the ladder body 9 of front view H shape is pivotally attached to the other side (short direction) opposite side part 8 of each raising / lowering frame 2, and this ladder body 9 is attached to an raising / lowering frame. 2 is provided so as to be able to swing up and down, and is hooked to the opposite side 8 of the elevating frame 2 when the ladder 9 is activated and placed on the upper end of the vertical frame 10 on both sides of the ladder 9. When the ladder body 9 is installed between the upper and lower opposing side portions 8 by providing a possible hooking portion 11 and hooking and connecting the hooking portion 11 to the opposite side portion 8 of the upper lift frame 2, The upper ladder frame 2 can be held in the raised state with respect to the lower lift frame 2 by the ladder body 9 in the state, and the ladder body 9 is hung on the lift frame 2 by detaching the hook 11 from the opposite side 8. When it moves, the upper lifting frame 2 can be lowered by the lifting mechanism 3 with respect to the lower lifting frame 2. . That is, the ladder body 9 functions as a structural material that supports the load of the upper lift frame 2 and also functions as a ladder for an operator to climb the lift unit 4.

  The pivoting structure of the lower ends of the vertical frame portions 10 on both sides of the ladder body 9 and the other opposing side portion 8 of the elevating frame 2 is arranged on both sides of the opposing side portion 8 of each elevating frame 2 respectively. A pair of bearing portions 12 are projected upward with a gap in the length direction of the portion 8, and the lower ends of the vertical frame portions 10 on both sides of the ladder body 9 between the protruding tip portions of the pair of bearing portions 12. The structure is pivoted.

  Further, the pair of bearing portions 12 is composed of an opposing plate portion of the plate material formed by bending a single plate material into a shape in which both end plate portions face each other, and the plate material having the pair of bearing portions 12 is opposed to each other. The structure is integrally fixed on the side portion 8.

  Further, the lower end portions of the vertical frame portions 10 on both sides of the ladder body 9 are pivoted so as to create a gap between the base end portions of the pair of bearing portions 12, and the base end portions of the pair of bearing portions 12 are connected. A gap is used as a latching gap 13 so that the latching part 11 can be inserted into the latching gap 13 so as to be hooked on the opposite side 8 of each lifting frame 2.

  That is, when the latching portion 11 is inserted into the latching gap portion 13 and latched on the opposite side portion 8, the vertical frame portions 10 on both sides of the upper and lower ladder bodies 9 are arranged in a substantially straight line in the vertical direction. It is said. Further, all the ladder bodies 9 pivotally attached to the lifting frames 2 have the same horizontal width (the width between the vertical frame portions 10 on both sides).

  On the other hand, the latching portion 11 has a width dimension smaller than the width dimension of the latching gap portion 13 and can be inserted into the latching gap portion 13 and latched on the opposite side portion 8 of the lifting frame 2. A hook body 14, a lever body 35 rotatably provided at the base end portion of the hook body 14, and a closing body 16 rotatably provided on the lever body 35 to close the opening 15 of the hook body 14. The hook body 14 is inserted into the hooking gap 13 and hooked to the opposite side 8 and the tip of the closure 16 is hooked to the hook 14 and hooked. When the opening 15 of the body 14 is closed and the lever body 35 is rotated in a direction away from the hook body 14, the state in which the closing body 16 closes the opening 15 is firmly maintained, and the opposite side 8 is prevented from being removed. It becomes the composition which becomes.

  In this embodiment, the four corners (corner portions) of the lowermost lifting frame 2 of the lifting unit 4 are fixed to the upper end of the support leg 26, and the lowermost lifting frame 2 is attached to a plurality of joining pieces 41. By using and integrating with the grounding table 1, the lifting / lowering unit 4 is provided above the grounding table 1.

  The scaffold frame 7 of the present embodiment has a substantially rectangular frame shape in plan view, and a work floor 5 having a substantially rectangular plate shape in plan view is fixed in the scaffold frame 7 in an erected state.

  Further, a handrail portion 6 having a horizontal rectangular frame shape in a side view is provided on one side (longitudinal direction) of the work floor 5 in a standing state, and the other side (short direction) of the work floor 5 is opposed to the other side. In addition, an opening / closing part 17 having a vertically rectangular frame shape when viewed from the side is provided in an upright state, and the work floor 5 is surrounded by the handrail part 6 and the opening / closing part 17.

  Each opening / closing part 17 pivotally pivots one side frame part to the other side frame part of each handrail part 6 adjacent to the one side frame part so that the opening / closing part 17 is connected to the handrail part 6. The opening and closing portions 17 are provided so as to be able to open and rotate in the horizontal direction and toward the inner side of the handrail portion 6, and each opening and closing portion 17 can be opened and rotated until it overlaps the pivoted handrail portion 6. ing. That is, one opening / closing part 17 is pivotally attached to one handrail part 6 standing upright, and the other opening / closing part 17 is pivotally attached to the other handrail part 6.

  Each opening / closing part 17 is provided so as to correspond to the position of the ladder body 9 of the elevating frame 2, and the work floor 5 and each ladder body 9 are rotated by opening and closing each opening / closing part 17. It is configured so that the worker can freely go in and out. Reference numeral 43 in the figure denotes a stopper for preventing the opening / closing portions 17 from opening outward from the closed state.

  In the present embodiment, the opening / closing part 17 is provided with a lock means 24 that can be unlocked to lock the closed state of the opening / closing part 17 and the state where the opening / closing part 17 is rotated and overlapped with the handrail part 6.

  The locking means 24 is provided in the middle of the other side frame portion of each opening / closing portion 17 with a locking tool 24A having a U-shaped cross-section that is open on the lower side so that it can be pivoted up and down. A latching recess 37 that can be latched from above is provided on the reinforcing bar 36 installed in the middle of the handrail 6 when the opening / closing part 17 is closed, and the latching recess 37 is latched on the reinforcing bar 36. Then, each opening / closing part 17 is configured to be locked in the closed state. Further, when each opening / closing part 17 is superposed on each handrail part 6, the lower opening part 38 of the locking tool 24 </ b> A is configured to be fitted and locked to the reinforcing bar 36 of the handrail part 6 from above. When the opening portion 38 is fitted and locked to the reinforcing bar 36, each opening / closing portion 17 is locked to the handrail portion 6 in a superposed state.

  In this embodiment, the scaffold frame 7 is provided with a handrail rotation mechanism 18 that rotates the handrail portion 6 outwardly and downwardly with respect to the work floor 5 so as to be in a state of being installed along the lift portion 4. The handrail turning mechanism 18 includes an upright holding mechanism 19 that can hold and hold the handrail portion 6 in an upright state with respect to the work floor 5.

  Specifically, the handrail rotating mechanism 18 pivotally attaches the handrail portion 6 to the scaffold frame 7, and the handrail portion 6 rotates outward and downward with respect to the work floor 5 with the pivotal portion 20 as a fulcrum. The standing holding mechanism 19 is provided with an inserted portion 21 for inserting and locking the lower portion of the handrail portion 6 in the scaffold frame 7. Then, by inserting and locking the lower portion of the handrail portion 6 to the inserted portion 21, the handrail portion 6 is held upright with respect to the work floor 5, and the handrail portion extends from the inserted portion 21. By pulling out the lower part of 6, the standing holding is released, and the handrail part 6 is configured to rotate about the pivot part 20 as a fulcrum.

  The pivoting portion 20 is provided with a shaft portion 22 in the scaffold frame 7 and a long hole-shaped bearing hole portion 23 for rotatably supporting the shaft portion 22 in the handrail portion 6. The handrail portion 6 pivots outward and downward with respect to the work floor 5 with the fulcrum 22 as a fulcrum, and the bearing hole portion 23 is formed in a long hole shape. By changing the position of the shaft portion 22 in the bearing hole portion 23, the handrail portion 6 is configured to be detachable with respect to the inserted portion 21.

  More specifically, the four corners (corner portions) of the scaffold frame 7 are formed in a bottomed cylindrical shape having a cylinder length in the vertical direction, and the cylindrical portions at the four corners serve as the inserted portions 21, while handrails. The lower portions on both sides of the portion 6 are extended downward, and the extending lower ends on both sides are used as insertion portions 42 that are inserted and locked into the insertion portion 21.

  In addition, a pair of bearing plates 39 project from the side portions of the inserted portions 21 toward the opposite outer sides of the opposite side portions of the scaffold frame 7 in the longitudinal direction, and between the pair of bearing plates 39. The shaft portion 22 is provided in an erected state.

  On the other hand, on the side part of the insertion part 42 at the lower part on both sides of the handrail part 6, a belt-like mounting plate 40 is moved downward so as not to interfere with the insertion of the insertion part 42 into the insertion part 21. The mounting plate 40 is provided with a hanging projection, and the mounting hole 40 is formed with a long hole-shaped bearing hole 23 having a length in the vertical direction.

  The shaft portion 22 is inserted into and supported by the bearing hole 23 so that the handrail portion 6 is connected to the scaffold frame 7. The shaft portion 22 (handrail is provided along the bearing hole 23. By moving the portion 6) downward, the insertion portions 42 on both lower sides of the handrail portion 6 can be inserted into the insertion portion 21, and the handrail portion 6 is lifted upward from this insertion state (stand-up holding state). Then, the shaft portion 22 can move upward along the bearing hole portion 23 to remove the insertion portion 42 from the inserted portion 21. At this time, the handrail portion 6 is moved to the pivoting portion 20 as a fulcrum. Along with the opening / closing part 17 superposed on the handrail part 6, the work floor 5 is pivoted downward to the outside of the work floor 5 so that it can be compactly retracted along the elevating part 4.

  Further, in this embodiment, the height of the handrail portion 6 is set so that the lower portion of the handrail portion 6 (the upper portion facing downward) does not come into contact with the ground surface when the handrail portion 6 is moved along the elevating portion 4. Configure the settings.

  In this embodiment, the scaffold frame 7 is fixed at the lower end portion of the inserted portion 21 at the four corners thereof in the vicinity of the four corner portions (corner portions) of the uppermost lifting frame 2 of the lifting and lowering portion 4. The frame 7 is integrated with the elevating unit 4 using a plurality of joining pieces 41, so that the scaffold frame 7 is provided above the elevating unit 4. Further, the uppermost lifting frame 2 of the lifting unit 4 has a structure in which the ladder body 9 is not provided, and a scaffold frame 7 is provided on the upper part thereof.

  Further, in this embodiment, the opposing side portions 8 of the elevating frames 2 are provided so as to protrude outward from the work floor 5 of the scaffold frame 7, so that the space between the opposing side portions 8 of the upper and lower elevating frames 2 is between. The ladder body 9 is constructed so as to project outward from the work floor 5.

  Specifically, by setting the width dimension in the longitudinal direction of the lifting frame 2 to be wider than the width dimension in the longitudinal direction of the scaffold frame 7, the opposing side portions 8 of each lifting frame 2 can be It is configured to project outward from the work floor 5.

  Therefore, when the ladder body 9 protrudes outward from the work floor 5, when moving from the top of the ladder body 9 to the work floor 5, or when moving from the work floor 5 to the top of the ladder body 9, The operator can take the above-mentioned posture while facing the direction of the work floor 5, which makes it easy for the operator to move up and down easily when going up and down between the work floor 5 and the upper part of the ladder body 9. The structure will be different.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Grounding stand 2 Elevating frame 3 Elevating mechanism 4 Elevating part 5 Work floor 6 Handrail part 7 Scaffolding frame 8 Opposite side part 9 Ladder body
10 Vertical frame
11 Hook
12 Bearing part
13 Latching gap
14 Hook body
15 opening
16 Occlusion body
17 Opening and closing part
18 Handrail turning mechanism
19 Standing holding mechanism
20 pivot joint
21 Insertion part
22 Shaft
23 Bearing hole
24 Locking means

Claims (7)

  An elevating part formed by connecting a plurality of elevating frames in upper and lower stages via an elevating mechanism is provided at the upper part of the grounding stand, and a work floor and a handrail part standing around the work floor are provided above the elevating part. An elevating type scaffolding platform provided with a scaffolding frame, wherein lower end portions of both side vertical frame portions of the ladder body are pivotally attached to opposite sides of each of the elevating frames of the elevating part, and the ladder body is attached to the elevating frame. The upper and lower vertical frame parts of this ladder body are provided with a latching part that can be hooked on the opposite side of the lifting frame when the ladder body is activated and placed in a standing state. When the ladder body is installed between the upper and lower opposing sides by hooking and connecting the latching portion to the opposite side portions of the upper lift frame, the upper ladder frame is placed on the lower lift frame by the standing ladder body. The lifting frame can be held in the raised state, and the latching In the lifting and lowering scaffolding base configured to be able to descend the upper lifting frame with respect to the lower lifting frame by the lifting mechanism when the ladder body is lowered on the lifting frame, the opposite sides of each lifting frame A pair of bearing portions are provided so as to project upward on both side portions of the respective portions, and the lower end portions of both side vertical frame portions of the ladder body are pivotally mounted between the projecting tip portions of the pair of bearing portions. A gap between the base ends of the bearing portion is used as a hook gap, and the hook is formed in a hook shape that can be inserted into the hook gap and hooked to the opposite side of each lifting frame. When the latching part is inserted into the latching gap part and latched on the opposite side part, the vertical frame parts on both sides of the upper and lower ladder bodies are arranged side by side in a substantially straight line. Elevating type scaffolding to do.   The hook portion has a width dimension smaller than the width dimension of the hook gap portion and can be inserted into the hook gap portion and hooked to the opposite side portion of the lifting frame, and the hook The elevating type scaffolding base according to claim 1, wherein the elevating type scaffolding base is constituted by a closed body that closes an opening of the body and keeps opposite sides of each of the elevating frames in a prevented state.   The handrail portion is provided with an opening / closing portion for entering and exiting the work floor so as to correspond to the position of the ladder body, and the opening / closing portion is configured to be freely opened and overlapped with the handrail portion. In addition, a handrail rotation mechanism is provided in the scaffold frame to rotate the handrail portion in which the opening and closing portion is overlapped to the lower side with respect to the work floor, and the handrail rotation mechanism is arranged along the lifting portion. The elevating type scaffolding base according to any one of claims 1 and 2, further comprising an upright holding mechanism capable of releasing holding to hold the handrail portion in a standing state with respect to the work floor.   4. The lifting / lowering scaffold according to claim 3, wherein the opening / closing part is provided with an unlockable locking means for locking the closed state of the opening / closing part and the state where the opening / closing part is overlapped and overlapped with the handrail part. Stand.   The handrail turning mechanism pivotally attaches the handrail portion to the scaffold frame, and the handrail portion pivots outward and downward with respect to the work floor with the pivoting portion serving as a fulcrum. The standing holding mechanism is provided with a inserted portion for inserting and locking the lower portion of the handrail portion in the scaffold frame, and the lower portion of the handrail portion is inserted into the inserted portion. By stopping, the handrail part is held upright with respect to the work floor, and by removing the lower part of the handrail part from the inserted part, the standing holding is released and the handrail part is released from the pivot. The lifting platform according to any one of claims 3 and 4, wherein the lifting platform is configured to rotate around a landing portion.   The pivot portion is provided with a shaft portion on the scaffold frame or the handrail portion, and a long hole-shaped bearing hole portion that rotatably supports the shaft portion is provided on the handrail portion or the scaffold frame. A handrail portion is pivoted outward and downward with respect to the work floor to be in a state of being installed along the lifting portion, and the bearing hole portion is formed in a long hole shape. 6. The lifting platform according to claim 5, wherein the handrail part is configured to be freely inserted into and removed from the inserted part by changing the position of the shaft part.   The opposing side portions of the lifting frames are provided so as to protrude outward from the work floor of the scaffold frame, and the ladder body constructed between the opposing side portions of the upper and lower lifting frames is outward from the work floor. It is comprised so that it may protrudely arrange | position, The scaffold platform for raising / lowering of any one of Claims 1-6 characterized by the above-mentioned.

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