JP6497835B2 - Work platform - Google Patents

Description

   The present invention relates to a work platform for indoor construction.

   In the technical field of work scaffolds for outdoor construction, one of the applicants of the present invention developed an invention according to Patent No. 3148886 and obtained a patent right. As the invention for indoor construction, the following is well known as a structure that can be folded.

Japanese Patent No. 2899751 Japanese Patent No. 3909522 Japanese Patent No. 2990376 Utility Model Registration No. 2528462 Registered Utility Model No. 3035144 Registered Utility Model No. 3035632 Publication

   However, in these scaffold plates, the means for turning from the open horizontal state at the time of use to the closed vertical state at the time of non-use is mainly composed of two folding means. In the upright state, when not in use, it moves to the warehouse or factory wall via a moving wheel and puts it upright, but when in use, each scaffold plate folded in a closed vertical state is moved to a predetermined location. When trying to do so, there was a disadvantage that the worker could not visually recognize the traveling direction accurately, and the horizontal assembly work for the opening took time.

   Therefore, the applicant of the present application disclosed in Japanese Patent Application No. 2011-37332 (Japanese Patent Application Laid-Open No. 2012-172464) for the purpose of providing a reasonable and workable indoor work platform that eliminates these disadvantages. I have such an invention.

   However, since the prior invention has the following drawbacks, it is an object of the present invention to eliminate them.

   First, in the invention of the prior application, there is a possibility that a hand may be caught when opening and closing the work base plate part which is a scaffold member.

   Secondly, in the invention of the prior application, the height of the work base plate portion when used was 750 to 1200 mm, and the height of the folded state when not used was 1400 mm. If the height is 1200 to 2000 mm, the height of the folded state when not in use exceeds 2000 mm, so the height when not in use is set to 1700 mm.

   Thirdly, in the invention of the prior application, it can be folded regardless of the position of the work base plate part, so when it is folded without lowering the work base plate part to the lowest level, there is a risk of falling down. Prevent such accidents from occurring.

   Fourthly, in the invention of the prior application, there is an anti-opening member provided outside the work table plate part, but if the whole is moved without the anti-opening, the top plate will open during the movement, and there is a risk. For this reason, in the present invention, an automatic locking of the opening stop is applied to the outside of the work base plate, and the work base plate is prevented from opening even if the opening operation of the work base plate is forgotten and moved.

   Fifthly, in the invention of the prior application, the interval between the work table plates is narrow, so that the operator's hands are prevented from being caught by widening the gap.

   Sixth, in the invention of the prior application, the support pipe has a structure in which the lower pipe material on the floor side is fitted inside the upper pipe material on the work scaffold base side, but this increases the center of gravity as the work scaffold base position increases. Since the work platform becomes unstable, the present invention reverses the insertion relation of the pipe material of the support leg, and the support leg is inserted into the lower pipe material of the floor material so that the upper pipe material on the work scaffold base side is inserted, Increase the weight of the lower part and lower the center of gravity of the workbench to stabilize it.

In the present invention, the respective work base plates 2, 2, 2, and 2 of the scaffolding base portion 1, 1 that bisects the whole horizontally through the connecting members 6, 6, 6, and 6 stand upside down. It is possible to fold and from the upper pipe materials 4, 4, 4, 4 and the lower pipe materials 4 ', 4', 4 ', 4' to the front and rear portions of the frame materials 3, 3, 3, 3 of the work base plate. The upper ends of the main struts are pivotally attached to the connecting members, and the upper ends of the intermediate struts composed of the upper pipe members 7, 7, 7, 7 and the lower pipe members 7 ', 7', 7 ', 7' are attached to the connecting members. Pivotally attached, side linkages 15, 15, 15, 15 are pivotally attached between the front and rear of the middle portion of the main column , and side bottom rods 9, 9, 9, 9 are pivotally attached between the front and rear of the lower end portion. Middle support rods 25 and 25 are pivotally attached between the front and rear of the middle part of the support and between the front and rear of the lower end , and between the lower ends of the main support provided on the left and right front and rear parts of the work platform plate of the adjacent scaffolding base. Base frame materials 11 and 11 are installed and moved to this base frame material Only set the Yasuta 19,19,19,19, bridged the Uchiren杆16,16,16,16 between the left and right of the Gawaren杆, the inner connecting rod is medium支杆25 and the side communicating rod and each pivotally attached to 15,15,15,15, between lower end portions of the left and right main strut inner支杆or outside支杆 of a medium支杆25 and basolateral rod 9,9,9,9 The base frame members 11 and 11 are pivotally attached to the side bottom rods 9, 9, 9, 9 of the center portion of the adjacent scaffold base portions, and the inner portions of the connecting members of the respective work platform plates. And supporting pipes made of upper pipe members 12, 12 and lower pipe members 12 ', 12' are pivotally mounted between the side bottom rods, and a gas spring material is provided between the back side intermediate portion of the work base plate and the side bottom rods. 13 and 13 are pivotally attached.

   In the prior invention, there was a risk that a hand could be caught when opening and closing the work base plate, but the present invention was able to completely eliminate this drawback.

   In the prior invention, the height when using the work base plate was 750 to 1,200 mm, and the height when folded when not in use was 1,400 mm. If it is 2000 mm, the height of the folded state when not in use exceeds 2000 mm, but since the height of the folded state when not in use is 1700 mm, the tip of the work table can be seen and people can freely handle the work. You can now.

   In the invention of the prior application, it was possible to fold it when not in use regardless of the position of the work base plate.Therefore, there was a risk of falling when the top plate member was folded without being lowered to the lowest level. Occurrence could be prevented.

   In the invention of the prior application, there is a locking member on the outside of the work table, but if you forget the locking and move the whole, there is a risk that the top plate will open during the movement In the present invention, the work table plate is configured to prevent automatic opening of the work table plate so that the work table plate does not open naturally even if the work table plate is forgotten to be moved. is there.

   In the prior invention, since the interval between the work table plates was narrow, it was easy for the hand to be pinched. In the present invention, it was possible to prevent the hand from being pinched by maintaining both the gaps wide.

   Furthermore, each work base plate is held in front of the floor surface of the work base plate being leveled by the action of the gas spring material supporting the lower side of the work base plate. .

   In the invention of the prior application, in the structure of the support base of the work base plate, the upper pipe material of the support base on the work base plate side is fitted into the lower pipe material of the floor side support leg, and the lower part is weighted and stabilized. As a result, work on the base plate can be performed with peace of mind.

Overall front view when using the highest position Overall side view of FIG. Overall front view when using the lowest position Overall side view of FIG. 1 and 3 overall plan view when used FIG. 5 is a plan view of a state in which the flat part of the half portion is omitted Front view showing the overall standing upright state when not in use Overall side view of FIG. (A) Front view of the upper end of the main strut at the inner side of the entire scaffold base, (b) Front view at the time of the above action (A) Side cross-sectional view of the main part of the upper end of the main strut that can be placed on the inner side of the entire scaffolding, (b) Side cross-sectional view showing the operating state of the same (A) Front view of a notch of the main strut on the outer side of the scaffold base, (b) Side view of the same (A) Front view showing the action state of the main strut on the outer side of the scaffold base, (b) Cross-sectional view of the same.

When constructing the ceiling part inside the building, after confirming the height with the floor surface, the height of the scaffolding part of the present invention is determined, but before that, all scaffolding bases are in place. Keep the part upright and folded. After that, when necessary, these are accommodated in a truck or a container and moved to a predetermined place while standing vertically lying down. After that, the lock pin on the suspension plate provided at the inner end portion of the work platform plate of the left and right scaffolding platform is removed. Then, since the upper end portion of the main column that is inserted between the suspension plates and supports the work table plate is released and the free state is released, each work table plate supports the lower side portion thereof. However, it is kept in a stable state by the action of the gas spring. In addition, the lock pins at the joint portions of the left and right scaffolding bases are removed, and thereafter, the lock pins and the like at the upper part of the intermediate struts of both work base plates are removed, and the entire base device is opened.

After that, first place two workers on the front and rear sides of one scaffolding base, and if each person puts their hands on the left and right parts of the worktable plate that is the same on the left and right, Both scaffold base plates are opened horizontally and held at the same time. Next, it is sufficient that two people perform the same lifting work on the front and rear sides of the other scaffold base part, so that both the scaffold base parts are held horizontally in the left-right direction.

   Next, at the construction site, when adjusting the height of the scaffolding platform according to the ceiling height, two workers should be placed before and after the platform and work from one platform . First, while supporting one work board, remove each pin of the main strut and support legs, free the main strut and support legs, lift the work board and stop at an appropriate height position, Insert the ammunition pin in accordance with the through-holes provided in the pipes of the main strut and the support leg, and fix it at that position. Similarly, the other work table is fixed by performing the same operation. As a result, the entire scaffold base part divided into right and left is in a state where both are horizontally deployed. Under this state, the worker may start construction on the work scaffold base.

   If the ceiling height differs depending on the construction site, the height may be adjusted by performing the above operation and fixed at an appropriate position.

   The state shown in FIGS. 1 and 2 is the case where the scaffold base is in the highest position, and the state shown in FIGS. 3 and 4 is the case where the scaffold base is in the lowest position. The height of the position may be maintained by inserting a bullet pin into the columns and through holes of the pipes in the support legs.

   1, 1 is a scaffold base part that is divided into left and right via the intermediate struts 7, 7, 7, 7 described later. The structure of this scaffold base part is as described below, and the whole is symmetrical. It becomes the structure of.

   In the embodiment shown in the drawings, the scaffolding platform portions 1 and 1 constructed as described above are connected in two on the left and right sides with the base frame member 11 and the support member 22 in the center portion to be described later.

   The left and right side scaffolding platform portions 1, 1 are formed by connecting a plurality of work platform plates 2, 2, 2, 2, respectively. It folds upright vertically and folds upward through the upper pivot portions 8 and 8.

   Each of the work table plates 2 and 2 has a configuration in which the extended metal plates 2 ′ and 2 ′ in which staggered cuts are formed on the steel plate are surrounded by the frame materials 3 and 3.

   On the bottom surfaces of the left and right work base plates 2, 2, upper ends of upper tubes 4, 4, 4, 4 serving as main struts are pivotally supported by pivots 5, 5, 5, 5, respectively. The upper tube material is inserted into the lower tube materials 4 ′, 4 ′, 4 ′, 4 ′, and the upper and lower tube materials are connected by means of the elastic pins 21, 21, 21, 21.

   The left and right work table plates 2 and 2 are connected to each other through connecting members 6, 6, 6 and 6 provided between the left and right end portions of the front and rear sides of the frame members 3 and 3, respectively.

   Since the diameter of the upper and lower tubes constituting the main support is such that the diameter of the lower tube 4 'is larger than the diameter of the upper tube 4, the action of the main support is the structure of the upper and lower tubes 4, 4'. Done on the premise.

   The upper ends of the upper pipe members 7, 7, 7, and 7 of the intermediate struts are pivotally attached to the connecting members 6, 6, 6, and 6, respectively. Large and small upper and lower pipe members can be inserted and expanded, and the diameters of the lower pipe members 7 ′, 7 ′, 7 ′ and 7 ′ are larger than the diameters of the upper pipe members 7, 7, 7 and 7.

Reference numerals 9 and 9 denote side bottom rods pivotally installed between lower ends of the main struts 4, 4, 4 and 4 on the front and rear outer portions of the scaffolding platform portions 1 and 1, respectively.

11 and 11 are base frame members installed between the lower ends of the main struts 4, 4, 4 'and 4' on both front and rear sides in order to connect the scaffold base parts 1 and 1 which are divided into right and left. A moving tool 17 with casters, which will be described later, is installed between the center portions of the frame members.

   12, 12, 12, 12 are support legs that are pivotally mounted between the inner side portions of the connecting members 6, 6 of the work base plates 2, 2 and a part of the side bottom rods. The gas spring members 13 and 13 are installed with their upper end portions pivoted to the back intermediate portions of the work table plates 2 and 2 and their lower end portions pivotally attached to a part of the side bottom rods.

   The gas spring members 13 and 13 are formed by the splaying action when the work base plates 2, 2, 2 and 2 of the both scaffold base parts 1 and 1 are operated from the closed state where they stand upside down to the horizontal open state. It comes to play the role which prevents that a worker's hand is pinched | interposed between boards.

   In addition, this gas spring material can be freely replaced with the same effect material (equivalent material).

   The support legs 12, 12, 12 ′, 12 ′ can be expanded and contracted by inserting upper and lower pipes having a large diameter, but the diameter of the lower pipe 12 ′ is larger than the diameter of the upper pipe 12.

   Of the upper and lower pipe members of the support legs 12, 12, 12 ', 12', one through hole is provided at the upper end of the lower pipe member 12 ', and a large number of through holes 14, 14,. Are provided, and the machine pins 21 and 21 are inserted between the inner and outer through holes at an appropriate height position to fix the upper and lower pipe members and to support the support legs.

   15, 15, 15, 15 are side linkages erected between upper ends of both the front and rear sides of the lower pipe member among the upper pipe members 4, 4 and the lower pipe members 4 ′, 4 ′ constituting the main column. Inner linkages 16, 16, 16, 16 are installed between the side linkages of the section.

   A base frame member 11 is installed between the lower ends of the main struts 4 and 4 at the inner central part of the work platform plates 2, 2, 2 and 2 of the left and right scaffolding platform parts 1 and 1, respectively. A moving tool 17 with casters is installed in the section. Auxiliary casters 18, 18 provided on the left and right sides of the moving tool 17 are movable casters 19, 19, 19, 19, 19, 19, 19, 19 provided at 8 locations under each column of the entire scaffold work table. It has a slightly smaller diameter and acts as an auxiliary wheel when the floor is moved.

   Reference numerals 20 and 20 denote handle levers provided on the lower side portions of the front and rear intermediate struts 7, 7, 7 ′, 7 ′. Workers are arranged in front of and behind the work table, and two persons can lift the handle levers simultaneously. As a result, the scaffold base parts 1, 1, 1, 1 that bisect the left and right can stand upside down in the vertical direction.

22 and 22 lower tube member 4 that make up the main columns of the central portion of the scaffold platform unit 1, 1 ', 4' in the support member provided between the front and rear on the side of the support member and the base frame member 11 The scaffold base parts 1 and 1 are connected together.

   Reference numerals 25 and 25 are intermediate supports installed on the lower end portions of the front and rear intermediate struts composed of the upper tube member 7 and the lower tube member 7 'in the intermediate portions of the two work platform plates 2, 2, 2 and 2 of the scaffolding base portions 1 and 1, respectively. The middle support rods pivotally support the upper tube material 4 and the lower tube material 4 ′ of the left and right main columns of the intermediate column, the inner connection rod 16, and the inner bottom rod 10, respectively.

   27 and 27 are external supports which are installed and supported between the side bottom rods 9 and 9 at the lower end portion of the main column composed of the upper tube member 4 and the lower tube member 4 'outside the front and rear portions of the middle support rods 25 and 25. It is a spear.

   Inner suspension plates 23, 23 are provided at the front and rear end portions of the frame members 3, 3 of the work platform plates 2, 2 of the scaffold platform portions 1, 1, respectively, and between the inner suspension plates, The upper end portion of the main column composed of the upper and lower pipe members 4 and 4 ′ to be expanded and contracted is inserted, and pivots 5, 5, 5 and 5 are provided between the lower end portions of the inner suspension plate. (See Figure 9)

   24 and 24 are on both sides of the back of the inner suspension plates 23, 23, 23, 23 in which the upper ends of the main struts 4, 4, 4 ′, 4 ′ on the inner side of the scaffold bases 1, 1 are fitted. When the scaffold base part is folded, the lock pin is automatically inserted into and engaged with the through hole provided in the inner suspension plate, so that the standing and lying state is maintained. (See Figure 10)

   The upper ends of the main struts composed of the upper tube members 4 and 4 and the lower tube members 4 'and 4' respectively installed on the outer sides of the work platform plates 2, 2, 2 and 2 of the both scaffold platform portions 1 and 1 The main struts are made of pipes that are vertically expanded and contracted, and are inserted between the outer suspension plates 23 ', 23', 23 ', 23' provided on the frame members 3, 3 of the plates 2, 2, respectively, and the lower ends of the outer suspension plates. It pivots to pivots 5, 5, 5, 5 between the parts. (See FIGS. 11 and 12)

   Reference numerals 28 and 28 denote lock claws provided on the inner side of the upper tube portion of the main column composed of the upper tube members 4 and 4 and the lower tube members 4 'and 4' on the outer side of the scaffolding platform portions 1 and 1, respectively. Is engaged with a through-hole 29 provided in a part of the upper pipe when the height of the scaffolding is raised, so that the outer suspension plate 23 ′ can be connected to the connecting portion even if the worktable is to be folded. You can't stand up, so you can't stand up.

1,1,1,1 Scaffolding base 2,2,2,2 Work base plate 2 ', 2' Extract metal band plate 3,3,3,3 Frame material 4,4,4 ', 4' Main strut ( Upper tube 4 and lower tube 4 ')
5, 5, 5, 5 Axis 6, 6, 6, 6 Connecting member 7, 7, 7 ', 7' Intermediate strut (upper tube material 7 / lower tube material 7 ')
8, 8, 8, 8 Pivoting part 9, 9, 9, 9 Side bottom rod 10, 10, 10, 10 Inner bottom rod 11, 11 Base frame member 12, 12, 12 ', 12' Support leg (upper tube member 12 -Lower pipe material 12 ')
13, 13 Gas spring material 15, 15, 15, 15 Side linkage 16, 16, 16, 16 Inner linkage 17, 17 Moving tool with casters 18, 18, 18, 18 Auxiliary casters 19, 19, 19, 19 Movement Casters 20, 20, 20, 20 Handle levers 21, 21,..., Machine pin 22, 22, support members 23, 23, 23, 23 inner suspension plates 23 ', 23', 23 ', 23' outer suspension plates 24 24, 24, 24 Lock pin 25, 25 Middle support rod 26, 26, 26, 26 Inner support rod 27, 27, 27, 27 Outer support rod 28, 28, 28, 28 Lock claw 29, 29 Through hole 30, 30 through holes

Claims (1)

Each work base plate of the scaffolding base part, which is divided into two left and right horizontally through the connecting member, can be folded upside down, and the upper pipe material can be folded up and down on the frame material of the work base plate. between the upper end portion of the main strut consisting of lower tubing to the pivoted, the upper end portion of the intermediate strut consisting of upper tubing and the lower pipe member and each pivotally to the connecting member, the front and rear of the intermediate portion of the main strut the Gawaren杆, basolateral rod and each pivotally between front and rear lower end portions, said支杆middle between before and after the front and rear between the lower end portion of the intermediate portion of the intermediate pillar to the pivoted adjacent scaffold platform section of the between the lower ends of the main struts provided on the left and right front and rear working table plate established the base frame member, set only a moving casters on the base frame member, the inner connecting rod between the left and right of the Gawaren杆This inner link is pivotally attached to the middle support and the side connection. Between the lower ends of the left and right main struts, the inner support or the outer support is placed between the middle support and the side support. and each pivotally mounted, adjacent to Badai section the base frame member and each pivotally to basolateral rod of the central portion of the support legs having upper tubing and the lower pipe material between said side bottom rod and the inner portion of the connecting member of the workbench board each pivot A work platform, comprising: a gas spring material pivotally attached between a back side intermediate portion of the work table plate and the side bottom rod.

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