JP3121487U - Rolling tower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rolling tower capable of easily changing the height of a handrail and improving workability.
SOLUTION: A rolling tower according to the present invention includes a rectangular work plate 3 on which an operator rides and works, a main support 5 disposed on each top of the work plate 3, and a main support 5 A handrail strut 10 that engages with the main strut 5 so as to move up and down in the axial direction, and a strut fixing means 13 that fixes the handrail strut 10 to the main strut 5 at a predetermined position. The main handrail 20 is provided between the adjacent handrail struts 10 adjacent to each other, and the main handrail 20 is orthogonal to the pair of first main handrails 21 disposed at opposing positions. The first main handrail 21 is composed of a pair of second main handrails 22 in a position so as to be extendable and contracted, and both ends of the first main handrail 21 are swingably connected to the handrail support column 10.
[Selection] Figure 1

Description

  The present invention relates to a rolling tower used at a construction site or the like.

  A rolling tower used in a construction site or the like is configured such that a work plate is provided on the uppermost part of a movable frame body, and an operator can go up to work on a high place. In such a rolling tower, a handrail having a predetermined height is provided around the uppermost work plate in order to ensure the safety of the worker.

  However, in such a rolling tower, there is a case where the handrail becomes an obstacle when the rolling tower is moved to another place due to the change of the work place or the work content is changed. Therefore, conventionally, various configurations for changing the height of the handrail have been proposed.

For example, the rolling tower described in Patent Document 1 includes a rectangular work plate and pipe struts arranged at the tops of the work plate. A handrail support is inserted into each pipe support, and the handrail support is supported so as to be movable up and down. Further, the handrail support column is configured to be fixed at a predetermined position with respect to the pipe column by a bolt. A handrail is bridged between adjacent handrail struts, and both ends of the handrail are fixed to the handrail struts. With the above configuration, each handrail can be moved up and down integrally with a handrail support column.
Japanese Utility Model Publication No. 6-62090

  However, in such a rolling tower, each handrail is fixed to a handrail support column. Therefore, in order to change the handrail height, all handrails must be moved up and down simultaneously. . Therefore, for example, when working alone, there is a problem that it is difficult to raise and lower the four handrails at the same time and workability is poor.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a rolling tower in which the handrail height can be easily changed and workability can be improved.

  A first rolling tower according to the present invention includes a rectangular work plate on which an operator rides to work, a main support column disposed on each top of the work plate, and the main support column with respect to the main support column. A handrail strut that is vertically movable in the axial direction and protrudes upward, strut fixing means that fixes the handrail strut to a predetermined position with respect to the main strut, and the adjacent handrail A main handrail spanned between each of the supporting columns, wherein the main handrail has a pair of first main handrails disposed at opposing positions and a pair of second handrails at positions orthogonal thereto. The first main handrail is configured to be extendable and contracted, and both ends of the first main handrail are swingably connected to the handrail support column.

  According to this configuration, since the first main handrail expands and contracts and swings with respect to the handrail support column, any one of the second main handrails can be moved up and down. . For example, when one of the second main handrails is lowered together with the handrail struts, the first main handrails follow and extend while swinging with respect to the handrail struts. In this way, since the second main handrail can be moved up and down separately, the number of handrail struts that an operator must adjust at a time can be reduced, and as a result, the main handrail can be reduced. In addition, the height of the handrail support can be easily adjusted. Moreover, since a pair of 2nd main handrail can be moved up and down separately as mentioned above, it is also possible to change the height of only one side of the 2nd main handrail. Thus, for example, only a part of the rolling tower can be arranged below the low roof.

  Note that “engagement” in the present invention means that the handrail support column is connected to the main support column so as to move up and down in the axial direction. For example, the main support column is formed in a hollow shape. A handrail post can be inserted. On the other hand, the handrail strut can be formed hollow and the main strut can be inserted into it. Or it can also comprise so that the handrail support | pillar can slide on the outer surface of a main support | pillar.

  Further, the first rolling tower is configured to surround the work plate below the main handrail in order to further enhance the effect of preventing the operator who works on the work plate from falling. An auxiliary handrail may be provided. In this case, the first rolling tower includes an engagement member that moves up and down along the handrail support column between the main handrail and the work plate, and the engagement member with respect to the handrail support column. Handrail fixing means for fixing at a predetermined position and auxiliary handrails spanned between the adjacent engaging members, and the auxiliary handrails are a pair of first rails disposed at opposing positions. It consists of an auxiliary handrail and a pair of second auxiliary handrails at a position orthogonal to the auxiliary handrail. The first auxiliary handrail is configured to be extendable, and both ends thereof are connected to the first main handrail. It can comprise so that rocking | fluctuation connection is possible with the said engaging member provided in the support pillar for the same handrail as it is made.

  According to this configuration, since the first auxiliary handrail expands and contracts and swings with respect to the engaging member, any one of the second auxiliary handrails can be moved up and down. For example, when one second auxiliary handrail is lowered together with the engaging member, both the first auxiliary handrails extend while swinging with respect to the handrail support column. Thus, since the second auxiliary handrail can be moved up and down separately, the number of engaging members that the operator has to adjust at a time can be reduced, and as a result, the auxiliary handrail and The height of the engaging member can be easily adjusted. In addition, since the second auxiliary handrail can be moved up and down independently of the handrail support column, only the height of the auxiliary handrail can be changed while the position of the main handrail remains unchanged. .

  In addition, at least one of the second main handrails can be configured to be extendable and retractable, and both ends thereof can be configured to be swingably connected to a handrail support column. By doing so, the handrail strut to which both the first and second main handrails configured to be stretchable can be moved up and down independently. For example, when the handrail support column is lowered alone, the first and second main handrails connected to the handrail support track swing with respect to the handrail support column. While stretching. Thus, since each handrail support column can be moved up and down independently, it is possible to further reduce the number of handrail support columns that the operator has to adjust at one time.

  Further, at least one of the second auxiliary handrails can be configured to be extendable and contracted, and both ends thereof can be configured to be swingably connected to the engagement member. By carrying out like this, the engaging member with which both the 1st and 2nd auxiliary handrail comprised so that expansion-contraction was possible can be moved up and down independently.

  In addition, the second rolling tower according to the present invention includes a rectangular work plate on which an operator rides and works, and a pair of second work plates disposed at intermediate portions of a pair of opposite sides of the work plate. 1 main strut, a pair of second main struts disposed at both ends of any one of the sides orthogonal to the side, and a vertically movable relative to the first main strut in the axial direction of the main strut And a first handrail strut that protrudes from the top and is engaged with the second main strut so as to be vertically movable in the axial direction of the main strut, and the top protrudes And a pair of first rails spanned between the first and second handrail struts adjacent to each other, and a pillar fixing means for fixing each handrail strut to a predetermined position with respect to the main strut. And a second main handrail spanned between the second handrail struts, the first handrail Handrail telescopically constructed, its both ends are connected pivotably to the handrail upright.

  In addition, the intermediate part here does not necessarily indicate the center of the side described above, but means any position between both ends of the side.

  The second rolling tower includes an engagement member that moves up and down along a handrail support column between a main handrail and a work plate, and the engagement member with respect to the handrail support column. A pair of first auxiliary handrails spanned between the engaging members provided on the adjacent first and second handrail struts; A second auxiliary handrail spanned between the locking members provided on the handrail support post, and the first auxiliary handrail is configured to be extendable, and both ends of the first handrail are configured to extend from the hand. It can comprise so that rocking | fluctuation connection is possible with the said engaging member provided in the support | pillar for sliding.

  In addition, the second main handrail can be configured to be extendable and retractable, and both ends thereof can be configured to be swingably connected to the second handrail support column.

  Further, at least one of the second auxiliary handrails can be configured to be extendable and contracted, and both ends thereof can be configured to be swingably connected to the engaging member.

  The second rolling tower is configured such that a part of the handrail of the rolling tower moves up and down. The vertical movement mechanism is the same as that of the first rolling tower described above, and the same effect can be obtained. For example, this configuration can be used when a part of the rolling tower is placed under a low roof by lowering only the handrail at the longitudinal end of the rolling tower having a rectangular work plate. It is effective for.

  According to the rolling tower according to the present invention, it is easy to change the height of the handrail and the workability can be improved.

Hereinafter, an embodiment of a rolling tower according to the present invention will be described with reference to the drawings. In the following description, the same or similar parts are denoted by the same reference numerals throughout the two embodiments.
(First embodiment)
1 is a perspective view of a rolling tower according to a first embodiment of the present invention, FIG. 2 is a front view of the rolling tower of FIG. 1, and FIG. 3 is a side view of the rolling tower of FIG.

  As shown in FIG. 1, the rolling tower 1 according to the present embodiment has a two-story structure. That is, the corners of the work plate 3 constituting the second floor and the work plate 4 constituting the first floor are fixed to the upper and lower portions of the four main columns 5, respectively. The work plate 3 constituting the second floor corresponds to the work plate in the present invention. A handrail support column 10 protrudes from each main support column 5, and a main handrail 20 and an auxiliary handrail 30 are bridged between adjacent handrail support columns 10. In addition, baseboards 9 are attached to the upper portions between the adjacent main columns 5 along the side portions of the work plate 3. A reinforcing member 5a and a brace 5b are suspended between the main columns below the work plate 3 between the adjacent columns 5. A ladder 6 is provided between the first floor and the second floor.

  Each main column 5 is formed in a hollow shape, and a caster 7 is attached to a lower end portion thereof. A handrail support column 10 is inserted into each main support column 5 and moves up and down with its upper portion protruding from the upper end of the main support column 5. A plurality of locking holes 10b arranged in a line in the axial direction are formed on the outer peripheral surface of the handrail support column 10, and each locking hole 10b has a locking pin 13 and a fixing pin as will be described later. 17 is inserted. Further, an engagement pin 10 a for connecting both ends of a main handrail 20 described later is provided at the upper end of the handrail support column 10. The upper end of the main column 5 is provided with a locking pin 13 that can be inserted into and removed from a hole formed on the outer peripheral surface thereof, and is inserted into the locking hole 10b of the column 10 for handrail. The supporting column 10 is fixed at a predetermined height. The locking hole 10b and the locking pin 13 constitute a column fixing means in the present invention.

  The four main handrails 20 are composed of a pair of first main handrails 21 arranged at opposing positions and a pair of second main handrails 22 located at a position orthogonal thereto. As shown in FIG. 2, the first main handrail 21 includes an outer tube 21a and an inner tube 21b inserted into the outer tube 21a. The first main handrail 21 expands and contracts as the outer tube 21a and the inner tube 21b slide with each other. It is free. In addition, engagement holes 21 c are formed at both ends of the first main handrail 21. By engaging the engagement holes 21 c with the engagement pins 10 a of the handrail support column 10, The main handrail can swing with respect to the handrail support column. That is, the first main handrail 21 is supported so as to turn with respect to the handrail support column 10 in a vertical plane including the axis thereof. As shown in FIG. 3, the second main handrail 22 does not have an expansion / contraction function, and both end portions thereof are fixed to the upper end portion of the handrail support column 10.

  Further, as shown in FIGS. 1 to 3, each handrail support column 10 is fitted with a tubular engagement member 15, whereby the engagement member 15 is connected to the main handrail 20 and the work plate. 3 can be moved up and down along the handrail support column 10. The engaging member 15 is provided with a fixing pin 17 that can be inserted into and removed from a hole formed on the outer peripheral surface thereof, and the engaging member 15 is inserted into the engaging hole 10 b of the handrail support column 10. Is fixed at a predetermined height. The locking hole 10b and the fixing pin 17 constitute handrail fixing means in the present invention. Further, as shown in FIG. 2, each engaging member 15 is formed with a connecting piece 15 a protruding in the radial direction, and a first auxiliary hand to be described later is connected to this connecting piece 15 a via a connecting pin 16. A slide 31 is connected.

  As shown in FIG. 1, the auxiliary handrail 30 is bridged between the work plate 3 below the main handrail 20. The four auxiliary handrails 30 are composed of a pair of first auxiliary handrails 31 disposed at opposing positions and a pair of second auxiliary handrails 32 at positions orthogonal thereto. As shown in FIG. 2, the first auxiliary handrail 31 is configured to be extendable and contractable in the same manner as the first main handrail 21, and is disposed below the first main handrail. . Then, both ends thereof are swingably connected to an engaging member 15 provided on the handrail support column 10. More specifically, the connection pins 16 provided on the engagement pieces 15 a of the engagement member 15 are engaged and connected to the engagement holes 31 c formed at both ends of the first auxiliary handrail 31. On the other hand, as shown in FIG. 3, the second auxiliary handrail 32 does not have a telescopic function, and both end portions thereof are fixed to the outer peripheral surface of the engaging member 15.

  Next, the usage method of the rolling tower comprised as mentioned above is demonstrated, referring FIGS. 1-7. 4 and 5 are operation diagrams when the auxiliary handrail is lowered, and FIGS. 6 and 7 are operation diagrams when the main handrail is lowered.

  The rolling tower according to the present embodiment normally climbs to the work plate 3 for the operator to perform work, and with the main handrail 20 and the auxiliary handrail 30 fixed at a predetermined height as shown in FIG. used. And when changing the height of the main handrail 20 and the auxiliary handrail 30 by the change of a work place etc., the following procedures are followed.

  First, the height of the auxiliary handrail 30 is changed. Therefore, the fixing pin 17 is pulled out from the locking hole 10b of the handrail support column 10 in order to release the engagement member 15 to which the second auxiliary handrail 32 is connected. Next, the second auxiliary handrail 32 is pushed down. Then, the engaging member 15 connected to both ends of the second auxiliary handrail 32 is pushed down, and in conjunction with this, the first auxiliary handrail 31 is engaged with the engaging member 15 as shown in FIG. It expands while swinging against. Thus, after moving one second auxiliary handrail 32 downward, the engaging member 15 is fixed by the fixing pin 17 again.

  Subsequently, the other second auxiliary handrail 32 is pushed down in the same manner as described above, and the engaging member 15 is fixed at the lowered position as shown in FIG.

  Thus, the height change of the auxiliary handrail 30 is completed.

  Next, the height of the main handrail 20 is changed. Therefore, the locking pin 13 is pulled out of the locking hole 10b of the handrail support column 10 in order to release the fixation of the handrail support column 10 to which the second main handrail 22 is connected. Next, the second main handrail 22 is pushed down. Then, the handrail struts 10 connected to both ends of the second main handrail 22 are pushed down, and in conjunction with this, the first main handrail 21 is used for handrails as shown in FIG. It extends while swinging with respect to the column 10. Thereby, this one 2nd main handrail 22 is moved below.

  Subsequently, the other second main handrail 22 is pushed down in the same manner as described above, and the engaging member 15 is fixed at the lowered position as shown in FIG.

  Thus, the height change of the main handrail 20 is completed, whereby the height of the main handrail 20 and the auxiliary handrail 30 can be changed. On the other hand, when returning the main handrail 20 and the auxiliary handrail 30 to the original predetermined height, the above procedure may be executed in reverse order. Further, for example, when it is desired to change the main handrail 20 and the auxiliary handrail 30 to different predetermined positions, the main handrail 20 and the auxiliary handrail 30 are moved to positions corresponding to the locking holes 10b of the handrail support pillar 10 formed at different predetermined positions. Thus, the locking pin 13 and the fixing pin 17 are respectively inserted into the locking holes 10b. Thereby, the main handrail 20 and the auxiliary handrail 30 can be fixed to another predetermined height. Moreover, since the 2nd main handrail 22 and the 2nd auxiliary handrail 32 can be moved separately as mentioned above, you may change and use any one height.

  As described above, according to the rolling tower of the first embodiment, since the first main handrail 21 expands and contracts and swings with respect to the handrail support column 10, either The second main handrail 22 can be moved up and down. For example, when one of the second main handrails 22 is lowered together with the handrail support column 10, the first main handrails 21 extend while swinging with respect to the handrail support column 10 following this. . In this way, since the second main handrail 22 can be moved up and down separately, the number of handrail struts 10 that an operator must adjust at a time can be reduced. The height adjustment of the handrail 20 and the handrail support 10 can be easily performed. In addition, since the pair of second main rails 22 can be moved up and down separately as described above, it is possible to change the height of only one side of the second main rail 22. Thus, for example, only a part of the rolling tower can be arranged below the low roof. Moreover, since the 1st auxiliary handrail 31 also has the same structure as the 1st main handrail 21, two handrails are arrange | positioned between each handrail support | pillar like this embodiment. Even if it is, the handrail can be easily moved up and down.

  The auxiliary handrail 30 is connected to the handrail support column 10 via an engaging member 15 that is provided so as to be movable up and down. With this configuration, the auxiliary handrail 30 can be moved up and down independently of the handrail support column 10, so that only the height of the auxiliary handrail 30 is changed while the position of the main handrail 20 remains unchanged. be able to. For this reason, when the work contents change and the auxiliary handrail 30 obstructs the work, only the height of the auxiliary handrail 30 needs to be changed, so that the work contents can be quickly changed. Moreover, since the auxiliary handrail 30 can be moved up and down independently with respect to the handrail support column 10 as described above, the auxiliary handrail 30 is obstructive when the height of the main handrail 20 is lowered. The auxiliary handrail 30 can be moved to the main handrail 20 side so that it does not become.

Moreover, since the 1st main handrail 21 and the 1st auxiliary handrail 31 are comprised so that expansion-contraction is possible, it can be used in common also for the rolling tower from which width differs.
(Second Embodiment)
The second embodiment of the present invention will be described below. FIG. 8 is a perspective view of a rolling tower having a rectangular work plate according to the present embodiment.

  As shown in FIG. 8, the rolling tower 50 according to the second embodiment has a two-story structure, similar to the rolling tower according to the first embodiment. Work plates 3 and 4 constituting the floor are formed in a rectangular shape. The work plate 3 on the second floor constitutes a work plate in the present invention. In addition to the four second main columns 52 arranged at the corners of the work plates 3 and 4, the rolling tower 50 includes two pairs arranged at the middle part of the long side of the work plates 3 and 4. The first main column 51 is further provided. And the handrail support | pillar 10 protrudes from each main support | pillar 51 and 52, and the main handrail 20 and the auxiliary handrail 30 are spanned between the adjacent handrail support | pillars 10, respectively.

  The handrail support column 10 includes a first handrail support column 101 inserted into the first main support column 51 and a second handrail support column 102 inserted into the second main support column 52. Yes. As in the first embodiment, the handrail support column 10 can move up and down, and is fixed by inserting the locking pin 13 into the locking hole 10 b of the handrail support column 10. The locking pin 13 and the locking hole 10b constitute the column fixing means of the present invention. Further, as in the first embodiment, the handrail support 10 is provided with an engaging member 15 so as to be movable up and down, and is fixed by inserting the fixing pin 17 into the locking hole 10b. The fixing pin 17 and the locking hole 10b constitute handrail fixing means.

  The main handrail 20 includes a pair of first main handrails 21, a pair of second main handrails 22, and a pair of third main handrails 123. The first main handrail 21 is bridged between the adjacent first handrail struts 101 and the second handrail struts 102. Further, the first main handrail 21 is configured to be extendable and retractable as in the first embodiment, and both ends thereof are swingably connected to the engaging pins 10 a of the handrail support column 10. On the other hand, the second main handrail 22 is bridged between the adjacent second handrail columns 102. The third main handrail 123 is bridged between the adjacent first main handrail columns 101. Further, the second main handrail 22 and the third main handrail 123 do not have a telescopic function, and both ends thereof are fixed to the upper part of the handrail support column 10.

  The auxiliary handrail 30 includes two pairs of first auxiliary handrails 31, a pair of second auxiliary handrails 32, and a pair of third auxiliary handrails 133. The first auxiliary handrails 31 are spanned between the engaging members 15 provided on the adjacent first handrail struts 101 and the second handrail struts 102. The first auxiliary handrail 31 is configured to be extendable and retractable similarly to the first embodiment, and both ends of the first auxiliary handrail 31 are swingably connected to the engaging member 15. On the other hand, the second auxiliary handrail 32 is stretched between the engaging members 15 provided on the adjacent second handrail support pillars 102. The third auxiliary handrail 133 is stretched between the engaging members 15 provided on the adjacent first handrail struts 101. Further, the second auxiliary handrail 32 and the third auxiliary handrail 133 do not have a telescopic function, and both ends thereof are fixed to the engaging member 15.

  Since the handrail of the rolling tower according to the second embodiment configured as described above has the same configuration as that of the first embodiment, it can be moved up and down by the same mechanism.

  According to this structure, the 2nd main handrail 22 and the 2nd auxiliary handrail 32 which are located in the both ends of the longitudinal direction of the rolling tower 50 can be moved up and down by the mechanism similar to 1st Embodiment, Thereby, the same effect as the rolling tower of the first embodiment can be obtained. In addition, this configuration is used when a part of the rolling tower is placed under a low roof by lowering only the handrail at the longitudinal end of the rolling tower having a rectangular work plate. It is effective for.

  Further, according to this configuration, after the second main handrail 22 and the second auxiliary handrail 32 are lowered downward as described above, the third main handrail 123 and the third auxiliary handrail 133 are It can be pushed down one side at a time. By doing so, it is possible to lower all of the main handrail 20 and the auxiliary handrail 30 configured above the work plate 3. As a result, when the handrail becomes an obstacle when the rolling tower is moved across the beam of the building, the height of the handrail can be changed and moved.

  Further, in this way, first, the heights of the second main handrail 22 and the second auxiliary handrail 32 are changed, and then the heights of the third main handrail 123 and the third auxiliary handrail 133 are changed. Can be changed. As a result, the number of handrail struts 10 and engaging members 15 that must be adjusted by the operator at a time can be reduced.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning.

  In each of the above-described embodiments, the second main handrail 22 is configured not to have an expansion / contraction function. However, the present invention is not limited to this, and at least one of the second main handrails 22 is replaced with the first main handrail 22. Like the handrail 21, it may be configured to expand and contract, and both ends thereof may be configured to be swingably connected to the handrail support column. By doing so, the handrail support column 10 to which both the first and second main handrails 21 and 22 configured to be stretchable can be moved up and down independently. For example, when the handrail support column 10 is lowered alone, the first and second main handrails 21 and 22 connected to the handrail support column 10 follow the handrail support column 10. It expands while swinging against. Thus, since each handrail support column 10 can be moved up and down independently, the number of handrail support columns 10 that the operator must adjust at a time can be further reduced. That is, the height of the handrail support 10 can be adjusted one by one. As a result, the height adjustment of the main handrail 20 and the handrail support 10 can be more easily performed. For example, when both the 2nd main handrails 22 are comprised so that expansion and contraction is possible, the structure of the 1st and 2nd main handrails 21 and 22 can be made the same. As a result, the types of components of the rolling tower can be reduced, thereby reducing costs and facilitating management of the components.

  Further, at least one of the second auxiliary handrails 32 may be configured to be similarly extendable and swingable with respect to the engaging member 15. By doing so, each engaging member 15 to which both the first and second auxiliary handrails 31 and 32 configured to be stretchable can be moved up and down independently, and the same effect as described above can be obtained. Obtainable. For example, even when both the second auxiliary handrails 32 are configured to be extendable and swingable, the same effect as described above can be obtained.

  In each of the above embodiments, the main column 5, the first main column 51, and the second main column 52 are formed hollow, and the handrail column 10 is inserted into the main column 5, the first main column 51, and the main column 5, 51, 52. In contrast, the handrail support column 10 is configured to move up and down in the axial direction. However, the present invention is not limited to this, and the handrail support column 10 extends in the axial direction with respect to each of the main columns 5, 51, 52. What is necessary is just to be connected so that it can move up and down. For example, on the contrary, the handrail support column 10 can be formed hollow, and the main support columns 5, 51, 52 can be inserted therein. Or it can also comprise so that the handrail support | pillar 10 can be slid on the outer surface of each main support | pillar 5,51,52. Moreover, the structure which can move the engaging member 15 up and down should just be comprised so that it can be moved up and down along the handrail support | pillar 10, and can be comprised by the same structure.

  The handrail support column 10 and each of the support columns 5, 51, 52 are fixed by inserting the locking pin 13 into the locking hole 10 b of the handrail support column 10. As long as it can fix. For example, a threaded hole may be formed in each of the main struts 5, 51, 52, a male screw may be screwed into the main strut 5, 51, 52, and the tip of the male screw may be pressed against the handrail strut 10. Or you may fix by the structure which fastens the outer peripheral surface of the support | pillar 10 for handrail with the internal peripheral surface of each support | pillar 5,51,52. Further, the fixing of the engaging member 15 and the handrail support column 10 by the fixing pin 17 is not limited as long as the engaging member 15 can be fixed to the handrail support column 10 and can be performed by the same configuration. .

  Although the rolling tower according to each of the above embodiments is configured with two stories, the above-described mechanism for moving up and down the handrail can also be applied to a rolling tower with three or more stories.

It is a perspective view of the rolling tower which concerns on 1st Embodiment. It is a front view of the rolling tower of FIG. It is a side view of the rolling tower of FIG. It is an operation figure at the time of lowering an auxiliary handrail. It is an operation figure at the time of lowering an auxiliary handrail. It is an operation | movement figure at the time of lowering a main handrail. It is an operation | movement figure at the time of lowering a main handrail. It is a perspective view of the rolling tower which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,50 Rolling tower 3, 4 Work board 5 Main support | pillar 10 Handrail support | pillar 10b Locking hole 13 Locking pin 15 Engagement member 17 Fixing pin 20 Main handrail 21 1st main handrail 22 2nd main hand Slide 30 Auxiliary handrail 31 First auxiliary handrail 32 Second auxiliary handrail 51 First main strut 52 Second main strut 101 First handrail strut 102 Second handrail strut 102

Claims (8)

A rectangular work board on which an operator rides and works,
Main struts arranged at the tops of the working plates;
A handrail strut that engages with the main strut so as to move up and down in the axial direction of the main strut, and the upper part protrudes
A column fixing means for fixing the handrail column to a predetermined position with respect to the main column;
A main handrail spanned between the adjacent handrail struts,
The main handrail is composed of a pair of first main handrails disposed at opposing positions and a pair of second main handrails at positions orthogonal thereto.
The first main handrail is configured to be extendable and contracted, and both ends of the first main handrail are swingably connected to the handrail support column. An engagement member that moves up and down along the handrail strut between the main handrail and the work plate,
Handrail fixing means for fixing the engaging member to a predetermined position with respect to the handrail support;
And further comprising an auxiliary handrail spanned between the adjacent engaging members,
The auxiliary handrail is composed of a pair of first auxiliary handrails disposed at opposing positions and a pair of second auxiliary handrails at positions orthogonal thereto.
The first auxiliary handrail is configured to be extendable and retractable so that both ends of the first auxiliary handrail can swing on the engaging member provided on the same handrail support column as the first main handrail is connected to. The rolling tower according to claim 1, which is connected.   3. The rolling according to claim 1, wherein at least one of the second main handrails is configured to be extendable, and both ends thereof are swingably connected to the handrail support column. tower.   4. The rolling tower according to claim 2, wherein at least one of the second auxiliary handrails is configured to be extendable and retractable, and both ends thereof are swingably connected to the engagement member. A rectangular work board on which an operator rides and works,
A pair of first main struts respectively disposed in the middle part of a pair of opposing sides of the work plate;
A pair of second main struts arranged at both ends of any side orthogonal to the side;
A first handrail strut that is engaged with the first main strut so as to move up and down in the axial direction of the main strut, and whose upper portion protrudes;
A second handrail strut that engages with the second main strut so as to move up and down in the axial direction of the main strut, and the upper part protrudes;
A column fixing means for fixing each handrail column to a predetermined position with respect to the main column;
A pair of first main handrails spanned between adjacent first and second handrail struts;
A second main handrail spanned between the second handrail struts,
The rolling tower, wherein the first main handrail is configured to be extendable and both ends of the first main handrail are swingably connected to the handrail support column. An engagement member that moves up and down along each handrail column between the main handrail and the work plate,
Handrail fixing means for fixing the engaging member to a predetermined position with respect to the handrail support;
A pair of first auxiliary handrails spanned between the engaging members provided on the adjacent first and second handrail struts;
A second auxiliary handrail spanned between the locking members provided on the second handrail post,
The rolling tower according to claim 5, wherein the first auxiliary handrail is configured to be extendable and contracted, and both ends of the first auxiliary handrail are swingably connected to the engagement member provided on the handrail support column.   The rolling according to claim 5 or 6, wherein the second main handrail is configured to be extendable and retractable, and both ends of the second main handrail are swingably connected to the second handrail support column. tower. The rolling tower according to claim 6 or 7, wherein the second auxiliary handrail is configured to be extendable and both ends of the second auxiliary handrail are swingably connected to the engagement member.

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