JPH0711642U - Elevating mobile scaffolding - Google Patents

Abstract

(57) [Summary] [Purpose] Easily folds down when not in use, saves storage space and transportation space, reduces management costs, is economical and mobile, and is easy to handle. Provide a scaffold. [Structure] An elevating work floor B is mounted on a moving scaffold base A so as to be able to move up and down, and an elevating means D for elevating the elevating work floor B is provided, and the pair of left and right support columns 1 project substantially horizontally toward the lower ends. The left and right leg members 4 are fixed to each other, and the left and right leg members 4 are formed to be bendable via the bent portions 4a, and the handrail frames 12, 13, 14, and 15 can be swung along the periphery of the work floor 10. To form an elevating work floor B that is erected on the work floor 10
It is formed so as to be swingable in a substantially upright state via 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an elevating and moving mobile scaffold for working at high places, which is used, for example, when installing an air conditioner on a ceiling at a construction work site, etc., and it can be folded compactly when not in use. The present invention relates to a lifting mobile scaffold that can be folded.

[0002]

[Prior art]

 Conventionally, various types of lifting / lowering movable scaffolds of this kind have been provided, and most of them have a body frame formed in a substantially rectangular frame shape and a lifting frame formed in a substantially rectangular frame shape. It is mounted so that it can be moved up and down, and the mechanism that slides the lifting frame up and down by the operation of the lifting mechanism is adopted. For example, in a workbench described in Japanese Utility Model Laid-Open No. 58-1087, a frame frame having casters, a work stage having substantially the same outer shape as the frame frame, and a work stage on the frame frame. It consists of four pedestals that are supported in parallel with each other. The four pedestals are formed into two pairs of crossbars, and the crossing angle of these two pairs of crossbars can be adjusted by a hydraulic piston. The hydraulic piston is configured to be driven by a manual hydraulic pump installed on the work stage.

[0003]

[Problems to be solved by the device]

 However, there are few conventional lifting scaffolds that are designed to be folded compactly when they are not in use, and in particular, they are folded so as to have a smaller area than the work floor surface during use. There were no foldable items, the storage space for them and the space for transportation became large, the management cost became high, and the economy was poor.

[0004]

[Means for Solving the Problems]

 Therefore, the present invention has been devised so as to solve the above-mentioned problems, and in the lifting type mobile scaffold according to claim 1, the mobile scaffold used at a construction work site or the like. In this case, the moving scaffolding base A, the lifting work floor B mounted on the moving scaffolding base A so as to be able to move up and down, and the lifting means D for moving the lifting work floor B up and down are provided. The moving scaffolding base A includes a pair of left and right columns 1, and left and right leg members 4 fixed to the lower ends of the left and right columns 1 and protruding substantially horizontally toward the front. It is formed so as to be freely bendable via the bent portion 4a arranged at an appropriate position. Then, the lifting work floor body B is assumed to be provided with the work floor 10 and the handrail frames 12, 13, 14, 15 which are erected upright along the periphery of the work floor 10, and the handrail frames 12, 13, 14 are provided. , 15 are formed on the upper surface of the work floor 10 so as to be rockable in a lying state, and the work floor 10 is formed so as to be rockable in a substantially upright state via a fulcrum 11.

Further, in the elevating type mobile scaffold according to claim 2, in a mobile scaffold used at a construction work site or the like, the mobile scaffolding base A and the mobile scaffolding base A are mounted to be movable up and down. Lifting frame C, lifting work floor B mounted on the lifting frame C so as to be able to move up and down, lifting frame C is raised and lowered with respect to the moving scaffold base A, and lifting work floor B is raised and lowered with respect to the lifting frame C. Elevating means D for elevating and lowering. The movable scaffolding base A is fixed to the pair of left and right columns 1, the lower horizontal member 2 and the upper horizontal member 3 that connect the left and right columns 1, and the lower ends of the left and right columns 1, respectively. The left and right leg members 4 are provided so as to project substantially horizontally, and the left and right leg members 4 are formed so as to be bendable via the bent portions 4a arranged at appropriate positions. Casters 7 are provided at the base end portion and the tip end portion, respectively, and an outrigger 8 is continuously provided so as to be bendable in the horizontal direction. Then, the elevating work floor body B is assumed to be provided with the work floor 10 and the handrail frames 12, 13, 14, 15 standing upright along the periphery of the work floor 10, and the handrail frames 12, 13, Each of the members 14 and 15 is formed on the upper surface of the work floor 10 so as to be swingable in a fallen state, and the work floor 10 is formed so as to be swingable in a substantially upright state via a fulcrum 11.

Further, in the elevating type mobile scaffold according to claim 3, the telescopic ladder E is attached to the mobile scaffolding base A, and the upper end portion of the telescopic ladder E can be attached to the elevating work floor B. Adopted means.

[0007]

[Action]

 Then, in the lifting type movable scaffold according to the first aspect, the lifting work floor B is mounted on the moving scaffolding base A so as to be lifted and lowered and lifted by the lifting means D. Then, in the ascending / descending work floor B, the handrail frames 12, 13, 14, 15 swing to the upper surface of the work floor 10 in a lying state, and further, the work floor 10 becomes substantially upright via the fulcrum 11. It is rocked and folded. Then, the movable scaffolding base A is folded by the left and right leg members 4 being automatically bent through the bent portions 4a.

In the lifting movable scaffold according to the second aspect, the lifting frame C is mounted on the moving scaffolding base A so as to be lifted up and down, and the lifting work floor B is lifted on the lifting frame C. By being mounted and operated by the elevating means D, the elevating frame C moves up and down with respect to the moving scaffolding base A, and at the same time, the elevating work floor B moves up and down with respect to the elevating frame C. Then, in the elevating work floor B, the handrail frames 12, 13, 14, 15 swing to the upper surface of the work floor 10 in a lying state, and further, the work floor 10 rises substantially through the fulcrum 11. It sways and folds. Then, the moving scaffolding base A is smoothly moved through the casters 7, and the outriggers 8 are bent at the connecting portions, so that the left and right leg members 4 are freely bent through the bent portions 4a. It is folded and folded.

Further, in the elevating type mobile scaffold according to claim 3, the telescopic ladder E is attached to the mobile scaffolding base A, and the upper end portion of the telescopic ladder E is attached to the elevating work floor B to elevate and lower. The telescopic ladder E expands and contracts according to the lifting operation of the work floor B.

[0010]

【Example】

 Hereinafter, the present invention will be described with reference to illustrated examples. In the figure, S indicates an elevating type mobile scaffold of the present invention used at a construction work site, etc. This elevating type mobile scaffold S is a movable scaffolding base A, and an ascending / descending attachment to the moving scaffolding base A. A frame C, an elevating work floor B that is mounted on the elevating frame C so as to be able to elevate and lower, and a frame C that is connected to the elevating frame C to elevate the elevating frame C with respect to the moving scaffolding base A, and also elevating the work floor B And an ascending / descending means D for elevating the ascending / descending work floor B with respect to the ascending / descending frame C. The moving scaffolding base A is fixed to the pair of left and right columns 1, the lower horizontal member 2 and the upper horizontal member 3 that connect the left and right columns 1, and the lower ends of the left and right columns 1, respectively, and is directed forward. The left and right leg members 4 are provided so as to project substantially horizontally, and the left and right leg members 4 are formed so as to be bendable via the bending portions 4a arranged at appropriate positions. Casters 7 are respectively provided at the base end portion and the tip end portion of the leg member 4 and an outrigger 8 is continuously foldable in the horizontal direction. Further, the elevating work floor B is provided with a work floor 10 and this work floor 10. A handrail frame 12, 13, 14, 15 is provided upright along the periphery of the work floor 10 so that each of the handrail frames 12, 13, 14, 15 can be rocked on the upper surface of the work floor 10 in a lying state. While being formed, the work floor 10 can be rocked to a substantially upright state via the fulcrum 11. It is formed. That is, each of the handrail frames 12, 13, 14, 15 is rocked on the upper surface of the work floor 10 in a lying state, and the work floor 10 is rocked in a substantially upright state via the fulcrum 11 to fold the lifting work floor B. The movable scaffolding base A can be folded by folding the left and right leg members 4 through the bending portions 4a and horizontally bending the outriggers 8.

Further, E in the figure shows an expansion / contraction ladder attached to the moving scaffolding base A, and the upper end of the expansion / contraction ladder E can be detachably attached to the elevating work floor B, and furthermore, the elevating work floor E The expansion / contraction ladder E itself expands / contracts in accordance with the lifting / lowering operation of the body B.

The mobile scaffolding base A is composed of a pair of left and right struts 1 made of a substantially U-shaped cross-section material vertically arranged at a predetermined interval, and a lower horizontal member 2 for connecting the left and right struts 1 to each other at the bottom. An upper horizontal member 3 that connects the left and right columns 1 to each other at the top, left and right leg members 4 that are fixed to the lower ends of the left and right columns 1, respectively, and project substantially horizontally toward the front, and the upper ends of the left and right columns 1. Left and right upper arm members 5, which are fixed to each of the left and right upper arm members 5 and which project substantially horizontally toward the front, and which connect the left and right upper arm members 5 and the left and right leg members 4 to the left and right sides. The right and left leg members 4 are formed so as to be freely bendable via the bent portions 4 a arranged at appropriate positions, and the base end portions and the tips of the left and right leg members 4 are provided. Casters 7 are provided in each part, and outriggers 8 are connected in a horizontally bendable manner. Is configured. Reference numeral 9 in the figure is a horizontal connecting member for freely connecting the lower end portions of the left and right reinforcing connecting members 6 (or freely connecting the tip portions of the left and right leg members 4). , Its left end portion is swingably attached to the left reinforcing connecting member 6 (or the left leg member 4), and its right end portion is detachably attached to the right reinforcing connecting member 6 (or the right leg member 4). It is configured such that the distance between the lower end portions of the left and right reinforcing connecting members 6 (or the tip end portions of the left and right leg members 4) can be kept constant. The casters 7 may have brakes. Further, the outrigger 8 may be configured so that it can be swung so as to come close to the leg member 4 of the moving scaffolding base A so as not to get in the way when the outrigger 8 is not used.

The elevating frame C is vertically arranged at a predetermined interval, and a pair of left and right elevating rails 20 made of a material having a substantially U-shaped cross section and slidably accommodated in the left and right columns 1, and a pair of the left and right elevating rails 20. The left and right elevating rails 20 and the horizontal members 21 that connect the upper end portions of the left and right elevating rails 20 are formed in a substantially gate shape.

The elevating work floor B is mounted on the upper part of the elevating frame C via a fulcrum 11 so as to be swingable in a substantially upright state, and is installed upright along the periphery of the work floor 10. Each of the handrail frames 12, 13, 14, 15 is formed by bending a pipe material into a substantially U-shape, and the both end portions of the handrail frames 12, 13, 14, 15 are appropriately bent. It is attached to the upper surface of the work floor 10 so as to be swingable in a lying state. The left and right guide rollers 17 are provided on the left and right rear portions of the lifting and lowering work floor B so that they can roll up and down in the left and right lifting rails 20 of the lifting and lowering frame C. It is configured to smoothly move in the groove of the elevating rail 20 in the vertical direction. In addition, reference numeral 16 in the drawing denotes an opening for allowing an operator to enter and exit the floor work B for raising and lowering. In addition, reference numeral 18 in the drawing denotes a substantially projecting locking portion to which an upper end portion of a telescopic ladder E described later is detachably mounted.

The elevating means D is a manual or electric hydraulic jack interposed between the lower horizontal member 2 of the moving scaffolding base A and the horizontal member 21 of the elevating frame C (see FIG. 1). , A pulley 22, and a wire 23. The pulley 22 is rotatably supported at right and left sides of the horizontal member 21 of the elevating frame C at predetermined intervals, and the wires 23 are hung on the left and right pulleys 22, respectively. At the same time, one end is fixed to the moving scaffold base A and the other end is fixed to the lifting work floor B (see FIG. 4). That is, when the lifting frame C moves up and down with respect to the moving scaffolding base A by the operation of the hydraulic jack, the lifting work floor B moves up and down at a speed twice as high as the lifting speed of the lifting frame C. . The pulley 22 may be a sprocket and the wire 23 may be a chain. Further, instead of the hydraulic jack that is interposed between the lifting frame C and the horizontal member 21, a screw jack that uses a ball screw may be used (see FIG. 5), or a rack and pinion may be used. Anything is fine. By the way, the hydraulic jack has a jack body having a hydraulic pump attached to the moving scaffolding base A, and an operating rod whose tip portion is attached to the horizontal member 21 of the elevating frame C and which slides on the jack body by hydraulic pressure. And an operating lever that is connected to the hydraulic pump and that allows the operating rod to move back and forth by the oil in the hydraulic pump by its swinging operation.In addition, the hydraulic pump also has a hydraulic relief valve. There is.

The telescopic ladder E is attached to the moving scaffolding base A through a hinge 35 so as to be swingable in the horizontal direction, and a lower ladder E1 and slidable vertically with respect to the ladder E. The upper ladder E 2 is mounted so that the upper end of the upper ladder E can be detachably engaged with the substantially hole-shaped engaging portion 34 of the elevating work floor B. Consists of. The lower ladder E1 is composed of left and right columns 30 and a plurality of steps 31 horizontally arranged between the left and right columns 30, and one column 30 is movable scaffolding base A through an appropriate number of hinges 35. Is rotatably mounted on the reinforcing connecting member 6. Furthermore, the upper ladder E2 is composed of left and right columns 32 which are slidably mounted on the columns 30 of the lower ladder E1, and a plurality of steps 33 which are laterally arranged between the left and right columns 32. That is, the telescopic ladder E is configured to expand and contract as the elevating work floor B is moved up and down, and can be made compact when not in use.

By the way, the specific configuration, shape, size and material of the elevating type mobile scaffold S, the specific configuration, shape, size and material of the moving scaffold base A, the specific shape, size, material and lower lateral support of the pillar 1. Specific shape, size, material, disposition position of the member 2, specific shape, size, material, disposition position of the upper horizontal member 3, specific configuration, shape, size, material, disposition position of the leg member 4 Specific configuration of the bent portion 4a, arrangement position in the leg member 4, specific shape, size, material, arrangement position of the upper arm member 5, specific shape, size, material of the reinforcing connecting member 6. , Disposition position, mounting state, specific configuration, dimensions, disposition position, number of casters 7, specific configuration, shape, size, material, disposition position of outrigger 8, mounting state, concrete configuration of horizontal connecting member 9 Composition, shape, size, material, installation position, mounting state, concrete composition, shape, dimensions of the lifting work floor B Method, specific mounting means to the lifting frame C, specific configuration, shape, size, material of the work floor 10, specific configuration of the fulcrum 11, arrangement position, specific of the handrail frames 12, 13, 14, 15. Configuration, shape, size, material, mounting state, specific configuration, shape, size, arrangement position, number of the locking portion 18, specific configuration, shape, size, material, and lifting rail 20 of the lifting frame C. Specific shape, size, material, specific shape, size, material, installation position of horizontal member 21, specific configuration of lifting means D, specific configuration of pulley 22, size, installation position, wire 23 Specific configuration, dimensions, fixing means, specific configuration of the telescopic ladder E, moving scaffolding, specific mounting means on the base A, specific configuration, shape, size, specific sliding means of the lower ladder E1 and the upper ladder E2 , Concrete shapes, dimensions, materials of the columns 30, 32, and tools of steps 31, 33 The specific shape, size, material, number, specific configuration, shape, size of the locking portion 34, specific configuration, shape, size, installation position, number, etc. of the hinge 35 are not limited to those shown in the drawings. It can be freely set without any need.

The present invention is constructed as described above, and its use example will be described. First, the caster 7 is used to move the elevating and moving scaffold S to a desired position, and the outrigger 8 is opened and set. . Then, when the elevating means D is operated, the elevating frame C rises with respect to the moving scaffolding base A. At this time, the lifting work floor B is raised by the pulley 22 and the wire 23 at a speed twice that of the lifting frame C. When the lifting work floor B reaches a desired height, the lifting is stopped, and the worker completes the desired work on the work floor 10 of the lifting work floor B. By the way, when setting the lifting type mobile scaffold S at a desired position, the telescopic ladder E is also set. That is, the expansion / contraction ladder E is swung via the hinge 35, and the engaging portion 34 provided on the upper portion of the column 32 of the upper ladder E2 is engaged with the engaging portion 18 of the lifting work floor B.

Next, after the work using the lifting / lowering movable scaffold S is completed, the lifting / lowering means D is operated to lower the lifting / lowering frame C with respect to the moving scaffolding base A, and at the same time, the lifting / lowering work floor B Is lowered at a speed twice as fast as that of the elevating frame C by the pulley 22 and the wire 23. After the elevating work floor B reaches the lowest position of the moving scaffolding base A, the handrail frames 12, 13, 14, 15 of the elevating work floor B are laid down on the work floor 10. Then, the work floor 10 is further swung so as to stand up about the fulcrum 11. At this time, the expansion and contraction ladder E releases the locking state between the locking portion 34 and the locking portion 18, and the reinforcing connecting member 6 is swung through the hinge 35. Then, the left and right leg members 4 are bent through the bent portions 4a so as to approach the work floor 10 in the upright state, and the elevating and moving scaffold S 1 is folded. Then, in this state, the vertical lifting type mobile scaffold S is moved to carry and store it.

[0020]

[Effect of device]

 Therefore, the elevating type mobile scaffold according to claim 1 is a mobile scaffold used in a construction work site or the like, and a movable scaffold base body, an elevating and lowering work floor body which is vertically mounted on the movable scaffold base, The moving scaffolding base is provided with a pair of left and right columns and a pair of left and right columns, and left and right leg members that are projected substantially horizontally toward the front while being fixed to the lower ends of the left and right columns, respectively. The left and right leg members are formed so as to be freely bendable via the bent portions arranged at appropriate positions, and the elevating work floor body is arranged along the work floor and the periphery of the work floor. The handrail frame is provided upright, and each of the handrail frames is formed so as to be swingable on the upper surface of the work floor in a lying state, and the work floor is formed to be swingable in a substantially upright state via a fulcrum. Therefore, when not in use, the entire lifting scaffold can be folded compactly. It becomes Mel so. In particular, it can be folded so that it has a smaller area than the working floor during use, saving its storage space and space for transportation, reducing management costs, excellent in economic efficiency, and excellent in maneuverability. It becomes an easy-to-handle lifting type mobile scaffold. Moreover, the structure of the elevating type mobile scaffold is simple, and it can be made compact, lightweight and compact.

Further, the lifting type movable scaffold according to claim 2 is a moving scaffold used at a construction work site or the like, and a moving scaffolding base, and an elevating frame mounted on the moving scaffolding base so as to be able to move up and down. And an elevating work floor body mounted to the elevating frame so as to be able to elevate and lower, and elevating means for elevating the elevating frame with respect to the moving scaffold base body and elevating the elevating work floor body with respect to the elevating frame. The movable scaffolding base is fixed to a pair of left and right columns, a lower horizontal member and an upper horizontal member that connect the left and right columns, and fixed to the lower ends of the left and right columns, and projects substantially horizontally toward the front. The left and right leg members are formed so as to be bendable through the bent portions arranged at appropriate positions, and the left and right leg members are provided. In addition, each caster is installed and Triggers are installed horizontally in a freely bendable manner, and the lifting work floor body is equipped with a work floor and a handrail frame that is erected along the periphery of this work floor. Since the work floor is formed so as to be swingable in a fallen state and the work floor is formed so as to be swingable in a substantially upright state via a fulcrum, the raising and lowering means actuates the raising and lowering frame relative to the moving scaffold base body. Simultaneously with the lifting and lowering, the lifting work floor is raised and lowered with respect to the lifting frame, and the lifting work floor can be raised to a considerable height. Moreover, the entire lifting scaffold can be folded compactly when it is not used. In particular, it can be folded so that it has a smaller area than the working floor surface during use, saving its storage space and space for transportation, reducing management costs, and being economical, as well as maneuverable. It is an elevating type mobile scaffold that is excellent in handling and easy to handle. Moreover, the structure of the elevating type mobile scaffold is simple, small, lightweight, compact, and relatively robust.

Further, the elevating type mobile scaffold can be smoothly moved via casters, and the outrigger can maintain a stable state. Moreover, the outriggers are bent at their connecting portions and do not become an obstacle when they are not used.

Further, in the elevating type mobile scaffold according to claim 3, since the movable scaffolding base is provided with the telescopic ladder, and the upper end portion of the telescopic ladder can be attached to the elevating work floor body. The telescopic ladder can be expanded and contracted according to the lifting operation, and this telescopic ladder can be used by the operator to get on or off the lifting work floor. become. Moreover, since the upper end of the telescopic ladder can be attached to the lifting work floor, the telescopic ladder can be made compact when the elevating mobile scaffold is not used.

[Brief description of drawings]

FIG. 1 is a perspective view showing a lifting type movable scaffolding according to the present invention in a state in which a lifting / lowering work floor is raised.

FIG. 2 is a perspective view of another lifting type mobile scaffold according to the present invention, showing a state in which a lifting work floor is lowered.

FIG. 3 is a perspective view of another lifting mobile scaffold according to the present invention, in which the lifting mobile scaffold is folded.

FIG. 4 is a side view showing a state in which a lifting / lowering work floor body is raised, illustrating another lifting / lowering type movable scaffold of the present invention.

FIG. 5 is a front view of a lifting and lowering work floor body in a raised state, which illustrates another lifting and lowering movable scaffold of the present invention.

FIG. 6 is a partially omitted plan view illustrating another lifting type mobile scaffold according to the present invention.

FIG. 7 is a perspective view showing another elevating type mobile scaffolding according to the present invention with a ladder set.

FIG. 8 is a perspective view showing a state in which a ladder is folded, illustrating another lifting type mobile scaffold according to the present invention.

[Explanation of symbols]

S Lifting type moving scaffolding A Moving scaffolding base 1 Column 2 Lower horizontal member 3 Upper horizontal member 4 Leg member 4a Bending part 5 Upper arm member 6 Reinforcement connecting member 7 Caster 8 Outrigger 9 Horizontal connecting member B Elevating work floor 10 work floor 11 fulcrum 12 handrail frame 13 handrail frame 14 handrail frame 15 handrail frame 16 open part 17 guide roller 18 locking part C elevating frame 20 elevating rail 21 horizontal member D elevating means 22 pulley 23 wire E telescopic ladder E1 lower ladder 30 Support post 31 Step E2 Upper ladder 32 Support post 33 Step 34 Locking part 35 Hinge

Claims (3)

[Scope of utility model registration request] 1. In a mobile scaffold used at a construction work site or the like, a mobile scaffolding base, an elevating work floor mounted to be movable up and down on the mobile scaffolding base, and an elevating work floor for raising and lowering. The moving scaffolding base includes a pair of left and right columns, and left and right leg members 4 that are fixed to the lower ends of the left and right columns and project substantially horizontally toward the front. The lifting / lowering work floor body is formed so as to be bendable via a bending portion arranged at an appropriate position, and the lifting work floor body includes a work floor and a handrail frame provided upright along the periphery of the work floor. , An elevating type movable scaffold characterized in that each of the handrail frames is formed on the upper surface of the work floor so as to be swingable in a fallen state, and the work floor is formed so as to be swingable in a substantially upright state via a fulcrum. . 2. In a mobile scaffold used at a construction work site or the like, a mobile scaffolding base, an elevating frame mounted on the mobile scaffolding base so as to be able to move up and down, and an elevating unit mounted so as to be able to move up and down on the elevating frame. The moving scaffolding base includes a pair of left and right columns and a working floor body and lifting means for raising and lowering the lifting frame with respect to the moving scaffolding base and raising and lowering the lifting working floor body with respect to the lifting frame. The lower horizontal member and the upper horizontal member that connect the left and right columns, and the left and right leg members that are respectively fixed to the lower ends of the left and right columns and project substantially horizontally toward the front are provided. It is formed so that it can be bent via a bent portion arranged at an appropriate position, casters are provided at the base end and the tip of the left and right leg members respectively, and the outriggers are connected so as to be bent horizontally. Set up and down The work floor body includes a work floor and a handrail frame that stands upright along the periphery of the work floor, and each handrail frame is formed on the work floor upper surface so as to be swingable in a lying state. An elevating type movable scaffold, wherein the movable scaffold is formed so as to be swingable in a substantially upright state via a fulcrum. 3. An elevating and moving scaffold according to claim 1, wherein the telescopic ladder is mounted on the movable scaffolding base, and the upper end of the telescopic ladder can be mounted on the lifting work floor. .