JPH10273971A - General-purpose ramp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ramp which can be used as a scaffold or the like for a high lift work. SOLUTION: A fixture 40 for a pair of scaffolds is attached to opposite end parts on the front end sides of foot boards 2 attached at its rear end part with ladder parts 3, and a coupling is connected to opposite end parts of two ramps 1 which are arranged in opposite to each other, so as to ride over both foot boards 2. With this arrangement, the former is used as a ramp for a veranda, and the latter is used as a scaffold for a high lift work where the work is carried out on the two foot boards 2 in the two ramps 1 coupled together. Thereby it is possible to enlarge the flexibility of using of the ramp.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building having a veranda and a balcony in a condominium, an apartment complex, and other medium- and high-rise buildings and the like, which is temporarily installed outside the outer wall of the building at the time of construction. The present invention relates to a general-purpose ramp which is attached between a scaffold and a frame such as a veranda so that a scaffold can enter and exit from a veranda portion, and which can be used as a scaffold for working at height.

[0002]

2. Description of the Related Art A conventional veranda ramp has a pair of ladders attached to the front and rear sides of a rectangular tread plate, and one of the ladders to be grounded on the veranda is extensible.
A clamp is provided at the lower part of the other ladder part to be fixed to the scaffold side, such a ramp is arranged so as to straddle the handrail of the veranda, fixed to the scaffold by the clamp of the other ladder part, and one ladder part is adjusted in length. By grounding the veranda, a ramp is installed between the scaffold and the veranda,
There were some that made it easier to get in and out of the veranda to the scaffold.

[0003]

However, there is a problem to be solved in that the above-mentioned veranda ramp is used only as a passage between the scaffold and the veranda.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of low versatility based on the prior art, and a pair of fixtures are provided at both ends on the front end side of a tread plate having a ladder portion attached to a rear end. Attached or on both sides of two laps facing each other,
Attaching a connecting tool that straddles both treads to secure it, so that it can be used as a vertex for the veranda, and by connecting two traps to work on the two treads that are connected. The object is achieved by increasing the use of the ramp by making it available as a possible scaffold for working at heights, i.e. by selecting and using fasteners or connectors.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an aluminum ramp, which is formed by providing a ladder portion 3 at the rear end of a tread plate 2 to be positioned horizontally. The footboard 2 is
Non-slip surface irregularities (not shown) are provided on the upper surface, and the ladder portion 3 is swingable with respect to the tread plate 2 so as to be freely foldable,
Further, the ladder portion 3 is inclined at an appropriate angle with respect to the step board 2. The ladder part 3 is formed by fixedly mounting a predetermined number of step stages 6, 6a... Vertically between a pair of both side rods 5, 5a.
A pair of independent adjusting devices 11 and 11a are provided on both sides of the lower end of the both-side rods 5 and 5a, the height of which can be adjusted steplessly and the height adjusting work is easily performed as described later. I have.

A base plate 12 also serving as a mounting bracket is fixed to the outside of both side rods 5 and 5a of the ladder portion 3, and upper and lower ends of the base plate 12 are bent at right angles in the horizontal direction at right angles.
13 and 13a, and a third protective plate 14 is provided in the same direction between the support plates 13 and 13a. Support holes 15 and 15 are provided at substantially the center of the upper and lower support plates 13, 13a and the protective plate 14. 15a and 16 are formed in a penetrating manner, and a cutout recess 17 is formed in the outer edge of the intermediate protective plate 14 by depression. A cap-shaped stopper 19 is provided at the upper end of a cylindrical slide bar 18 inserted through the support holes 15, 15a, 16 of the support plates 13, 13a and the protection plate 14, and a rubber plate is provided at the lower surface via a universal joint 20 at the lower end. Grounding portions 21 are provided. Further, friction washers 23, 23a, 23b are provided on the inner surface of the base plate 12 of the adjusting devices 11, 11a so as to be in contact with the inclined lower surface of the locking portion 22 formed between the intermediate protection plate 14 and the lower support plate 13a. While being arranged, the support holes 24, 24a,
The slide rods 18 are inserted and lightly fitted. A compression spring 25 is wound around the slide rod 18 between the lower support plate 13a and the third friction washer 23b, and the compression spring 25 urges the friction washers 23, 23a, and 23b upward. Since the base ends of the friction washers 23, 23a, and 23b are held by the locking portions 22, and the friction washers 23, 23a, and 23b are lightly fitted to the slide rod 18, the slide rods are inclined. Hanging 18.

Next, the mounting structure of the ladder portion 3 which is foldably mounted on the tread plate 2 on the top of the ramp 1 is such that the substrate 30 extends downward to the outside of the rear ends of the left and right side plates 29 and 29a of the tread plate 2. At the same time, the swing plate 31 is fixed to the outside of the upper ends of the side rods 5 and 5a of the ladder portion 3 so as to extend upward, and the base plate 30 on the tread plate 2 and the swing plate 31 on the ladder portion 3 are pivoted. The ladder portion 3 mounted on the veranda B side with respect to the step board 2 is pivotally supported by 32 and 32a so as to be swingable. Further, position fixing members 33 and 33a are attached to side edges of the lower surface of the tread plate 2 on the ladder portion 3 side,
A cylindrical holding cylinder 34 is attached to the lower surface of the tread plate 2,
Slide pins 35 and 35a urged outward by springs (not shown) are provided inside 34, and the distal ends of the slide pins 35 and 35a are passed through the substrate 30 provided on the tread plate 2. I have. Position fixing holes 36 and 36a are provided at two positions of the swinging plate 31 of the ladder portion 3, and pin heads 37 and 37a of slide pins 35 and 35a arranged in the holding cylinder 34 of the tread plate 2 are fitted. In addition, two slide holes 38 and 38a having a long hole shape are opened at two positions on the center side of the holding cylinder 34, and the slide pins 3 are formed.
Operation rods 39, 39a projecting downward from the slide holes 38, 38a are fixed to the base ends of 5, 35a.

A pair of fixtures 40, 40a, which are removably mounted on the front ends of both side ends of the tread plate 2, are fixed to the veranda B. And a long and narrow base 41, and a clamp 42 fixed to the lower surface of the front end of the base 41. A bolt insertion hole 43 is provided at the rear end of the base 41, and bolts are inserted into the left and right side plates 29 and 29a of the tread plate 2. Holes 44 are respectively provided. Then, a nut 46 is screwed into the bolt 45 inserted into the aligned bolt insertion holes 43 and 44 to fix the fixtures 40 and 40a to the tread plate 2.

A connecting member 47 for the two ramps 1 arranged opposite to each other straddles both treads 2 and is externally fitted and fixed to a side end portion of the treads 2 so as to have a U-shaped cross section and a horizontally long shape. A bolt insertion hole 48 is formed at both ends of the connecting member 47 at positions corresponding to the bolt insertion holes 44 on both tread plates 2. Then, the bolt insertion hole 44 on the side of the matched tread plate 2
Then, a nut 46 is screwed into a bolt 45 inserted into the bolt insertion hole 48 on the connecting tool 47 side to connect the two ramps 1 together.

A frame tube holder 50 provided on each of the outer surfaces of both side rods 5 and 5a in the ladder portion 3 is provided with a stopper 52 extending in a diameter direction below the cylindrical portion 51 and at a middle portion of the cylindrical portion 51. A nut 53 is provided and formed by screwing a thumbscrew 54 onto the nut 53, and the tip of the thumbscrew 54 can freely project into the cylindrical portion 51. In addition, one frame pipe holder 55 is fixedly mounted on the intermediate part of the outer surface of the base 41 in each fixture 40, 40a, and two frame pipe holders 56, 56a are fixedly mounted on the intermediate part of the connector 47, respectively. The frame tube holders 55, 56 and 56a have the same configuration as the frame tube holder 50 of the ladder portion 3.

A base end of an opening preventing plate 57 is pivotally connected to each of the upper ends of the outer surfaces of the both-side rods 5 and 5a in the ladder portion 3, and an engaging hole 58 is formed at the leading end of the opening preventing plate 57. I have. Opening prevention plates on the outer surface of the tread plate 2 and the side end surfaces of the ladder portion 3.
Locking projections 59 and 60 are provided at positions corresponding to the engagement holes 58 of the 57. The engaging hole 58 of the opening preventing plate 57 is adapted to engage with the locking projection 59 on the tread plate 2 side when used, and engage with the locking projection 60 on the ladder portion 3 when not in use.

Numerals 65 and 65a denote lap safety frames provided on both upper and outer sides of the tread plate 2 of the lap 1. The lower ends of the two vertical frame pipes 66 and 66a below the lap safety frames 65 and 65a are ladders. It can be freely fitted and fixed in the frame pipe holders 50, 55, 56, 56a provided in the part 3 and the fixing tools 40, 40a or the connecting tool 47, and is integrally formed on the upper part of the vertical frame pipes 66, 66a. One end of each of the upper safety frames 67 and 67a located on both sides is extended toward the scaffold A side.

In addition, connecting brackets 6 are provided at two upper and lower positions on side frame tubes 68, 68a at the end of the upper safety frame 67, 67a on the side of the scaffold A.
9, 69a, respectively, and the connecting brackets 69, 69a,.
Each has two cylindrical holders 70 and 70a connected and fixed, and ring bodies 71 and 71a made of synthetic resin are fitted into the inner peripheral sides of the cylindrical holders 70 and 70a. Also, tarp safety frame 6
5, 65a, the ring bodies 71, 71a of one cylindrical holding part 70
The side frame tubes 68, 68a are rotatably movable up and down so as to prevent rust, and the ring bodies 71, 71a are also fitted into the other cylindrical holding portions 70a of the connection brackets 69, 69a.
The side frame pipes 73, 73a of the scaffold safety frames 72, 72a are fitted therein so as to be rotatable up and down.

In addition, nuts 74 are fixed to upper and lower ends of side frame pipes 73, 73a of the scaffold safety frames 72, 72a connected to the above-mentioned ramp safety frames 65, 65a, respectively, and horizontal frames of the scaffold safety frames 72, 72a are provided. An insertion hole 77 is inserted through a horizontal plate of an L-shaped fixing plate 76, 76a fixed to the base end of the pipe 75, 75a, and a bolt is inserted into the insertion hole 77.
78 and 78a are inserted and arranged, and the horizontal frame pipes 75 and 75a are attached to and detached from the side frame pipes 73 and 73a of the scaffold safety frames 72 and 72a by screwing the nuts 74 and bolts 78 and 78a of the side frame pipes 73 and 73a. It is free. In addition, telescopic tubes 79, 79a whose fixing positions can be freely fixed are slidably attached to the distal ends of the horizontal frame tubes 75, 75a of the scaffold safety frames 72, 72a, and the scaffold A of the scaffold A is attached to the distal ends of the telescopic tubes 79, 79a. The clamps 80 and 80a for the frame 8 are mounted.
The side frame tubes 68, 68a of the ramp safety frames 65, 65a and the side frame tubes 73, 73a of the scaffold safety frames 72, 72a are connected by connecting brackets 69, 69.
a, because they can move up and down with respect to each other, at the vertical position of the upper connecting bracket 69, 69a and the lower position of the lower connecting bracket 69b, the side frame pipes of the ramp safety frames 65, 65a Stoppers 81, 81a for restricting the sliding amount of the connecting brackets 69, 69a to 68, 68a.
Is fixed.

Next, the operation of the general-purpose ramp according to the present invention will be described. The pattern of erection of the ramp 1 between the scaffold A and the veranda B is as follows. (1) First, the fixtures 40, 40a are externally fitted and fixed to the front end side end of the tread plate 2, and the matched bolt insertion holes 43,
A nut 46 is screwed into a bolt 45 inserted through 44, and the tread plate 2
Then, the fixtures 40 and 40a are fixed. (2) The slide bar in the adjusting devices 11 and 11a of the ladder part 3
Extend 18 as appropriate. (3) There is an appropriate space between the upper part of the handrail C of the veranda B and the lower surface of the tread plate 2 in the ramp 1, and the tread plate 2
The ladder 3 is landed on the slab of the veranda B so that the ladder 3 is in a substantially horizontal or low-angle tilt state. (4) The clamps 42 of the fixtures 40 and 40a are fixed to the scaffold component frame 8 at an appropriate position on the scaffold A. (5) The adjusting devices 11 and 11a of the ladder portion 3 are appropriately adjusted as described later, that is, the slide rod 18 of the adjusting devices 11 and 11a is adjusted.
And the tread plate 2 of the ramp 1 is made horizontal at the upper part of the handrail C. As a result, a passage by the ramp 1 is provided between the scaffold A and the veranda B. In some cases,
A scaffold component frame 8 that can be provided separately or whose position can be adjusted
After setting and fixing the position above the handrail C, the front end side of the tread 1 of the ramp 1 is fixed to the scaffold configuration frame 8, and the adjusting device 11 provided on the ladder portion 3 with the tread 2 supported on the scaffold A side, By operating 11a, the slide bar 18 is lowered and landed longer than the required amount of protrusion, and then the adjusting devices 11, 11a are finely adjusted to make the tread plate 2 horizontal.

The adjusting devices 11, 11a provided on the ladder portion 3 on the veranda B side have the following adjusting action. In a normal installation state, the grounding portion 21 lands and the slide rod
18 is fixed, the weight of the ladder portion 3 acts on the base ends of the friction washers 23, 23a and 23b via the base plate 12 and the adjusting devices 11 and 11a, and the friction washer 23 is acted on by the action of the compression spring 25. , 23a and 23b are inclined and hooked on the slide bar 18 to fix the slide of the slide bar 18. On the other hand, when adjusting the slide of the slide bar 18, for example, a thumb is inserted through the cutout recess 17 of the protection plate 14, and the slide bars of the friction washers 23, 23 a and 23 b are inserted.
By pressing down the outer portion from the center axis of 18, the friction washers 23, 23a, 23b are set to the vertical position with respect to the slide bar 18, so that the slide bar 18 is released and the slide bar 18 is moved. After the height adjustment, the thumb is released and the slide bar 18 is latched by the friction washers 23, 23a and 23b. Further, the presence of the protection plate 14 in the adjusting devices 11 and 11a causes the friction washers 23 and 23a to be inclined.
, 23b to prevent the falling object from colliding with the outer part of the center axis of the sliding rod 18 in the sliding state of the sliding rod 18 due to a accident caused by the falling object. Looseness and rattling of the ramp 1 are prevented, thereby improving stability and safety, and ensuring the stepless adjustment and fixing action of the slide bar 18 which is an essential function. or,
The notch recess 17 provided in the protection plate 14 is a friction washer.
The protection plate 14 has the function of facilitating the state adjustment of 23, 23a and 23b.

In a normal installation state, the compression spring 25
As a result, the friction washers 23, 23a, 23b are inclined, and the support holes 24, 24a, 24 provided in the friction washers 23, 23a, 23b are inclined.
b is locked on the slide bar 18, the slide bar 18 is fixed,
Also, if the friction washers 23, 23a, 23b are made perpendicular to the slide bar 18, the slide bar 18 can be easily moved, and since the fixed position with respect to the slide bar 18 is stepless, fine adjustment is performed. , The step board 2 is set in a horizontal state.

Next, the method of attaching the safety ramps 65 and 65a is as follows. (1) Side rods 5, 5a and fixture 4 of the ladder part 3 of the ramp 1
Insert the vertical frame pipes 66, 66a of the trap safety frames 65, 65a from above into the frame pipe holders 50, 55 provided on the 0, 40a.
And the upper safety frames 67 and 67a of the safety frames 65 and 65a are arranged on both upper sides of the tread plate 2 of the ramp 1. (2) In the scaffolding safety frames 72, 72a movably connected to the scaffold A-side ends of the trapping safety frames 65, 65a, at right angles to the ramping safety frames 65, 65a, that is, the frame D on the scaffold A. While rotating the scaffolding safety frames 72, 72a in a direction parallel to the wall surface of
The scaffold safety frames 72, 72a are moved up and down with respect to the ramp safety frames 65, 65a. (3) The scaffold safety frames 72, 72a are extended by appropriately extending the telescopic tubes 79, 79a provided at the ends of the horizontal frame tubes 75, 75a of the scaffold safety frames 72, 72a.
The clamps 80 and 80a of a are fixed to the scaffold construction frame 8 of the scaffold A. As a result, a ramp safety frame 6 is provided on both sides of the ramp 1 passage and on the skeleton D side of the passage of the scaffold A near the ramp 1.
5, 65a and scaffold safety frames 72, 72a are provided respectively.

The ladder portion 3 in the folded state is provided with the operating rod 3 of the slide pins 35, 35a in the position fixing members 33, 33a.
9 and 39a are slid inward with, for example, two fingers to release the pin heads 37 and 37a from the position fixing holes 36a of the rocking plate 31 fixed to the upper end of the ladder portion 3, and 3
In a swingable state. Then, after swinging the tread plate 2 with the pivots 32, 32a of the tread plate 2 and the ladder portion 3 as fulcrums, if the hands are released from the operation rods 39, 39a of the slide pins 35, 35a,
The slide pins 35 and 35a move outward by the action of the springs, and the pin heads 37 and 37a fit into the position fixing holes 36, respectively.
In the relation between the tread plate 2 and the ladder part 3, the pivots 32, 32a and the pin heads 37, 37a are fixed at two points, and when folded, the swinging direction is reversed by the same operation as described above.

Therefore, since the ramp 1 can be made compact by folding it, it can be easily stored and transported when not in use, and can be easily assembled and mounted on the scaffold A and the veranda B. 3 with the ground contact portion 21 landing on the slab of the veranda B,
Is swung upward with respect to the ladder portion 3 and fixed at a predetermined angle, and then the ladder portion 3 on the side of the scaffold A is fixed to the tread plate 2 held at an appropriate height, so that the assembling of the ramp 1 is completed. It can be completed, and can be easily assembled in a state of being installed so as to straddle the handrail C of the veranda B.

Next, a pattern in which two ramps 1 are connected and used as a scaffold for working at a high place is as follows. (1) First, connect the connecting tool 47 to the side end on the front end side of the tread plate 2,
The two stepping plates 2 are straddled so as to be externally fitted and fixed, and the matched bolt insertion holes 48 on the connecting tool 47 side and both the stepping plates 2 are fixed.
A nut 46 is screwed into a bolt 45 inserted through the bolt insertion hole 44, and a connector 47 is fixed to the tread plate 2 to connect the two ramps 1. (2) The slide bar in the adjusting devices 11 and 11a of the ladder part 3
The ladder part 3 is landed by appropriately extending 18. (3) The adjusting devices 11 and 11a of the ladder portion 3 are appropriately adjusted in the same manner as described above, that is, the slide bar 18 in the adjusting devices 11 and 11a is shortened, and the tread plate 2 of the ramp 1 is moved above the handrail C. It is horizontal. As a result, a scaffold for working at height formed by connecting the two ramps 1 is installed.

The method of mounting the safety frames 65 and 65a is as follows. (1) Scaffolding safety frames 72, 72 connected to upper safety frames 67, 67a
The horizontal frame pipes 75, 75a of a are removed by unscrewing the bolts 78, 78a on the upper and lower ends of the side frame pipes 73, 73a. (2) Side rods 5 and 5a of the ladder part 3 in one ramp 1
Frame tube holders 56 of the frame tube holder 50 and the connecting member 47
a, one of the vertical frame pipes of the ramp safety frames 65 and 65a from above
66, 66a are inserted and fixed with the thumbscrew 54, and the upper safety frames 67, 67a of the safety frames 65, 65a are arranged on both upper sides of one of the ramps 1. The upper safety frames 67 and 67a are arranged.

Accordingly, the general-purpose tarp according to the present invention is
One ramp 1, a pair of fixtures 40, 40a, one coupling tool
47, two bolts 45, 45a, two nuts 46, 46a, and a pair of lap safety frames 65, 65a can be used as one set to cope with each of the above patterns.

[0024]

In summary, the present invention is based on the fact that the number of floors of the scaffold A and the level of the veranda B in the specific level of the building usually do not coincide with each other, and that the tread plate 2 of the ramp 1 installed above the handrail C In order to achieve a horizontal state, a ladder portion 3 is attached to the rear end side of the rectangular tread 2 and a grounding portion 21 is provided below the pair of side rods 5 and 5a of the ladder portion 3.
And a pair of slide rods 18 having a pair of side rods 5, 5a of the ladder portion 3 so that the height of the slide rod 18 can be adjusted steplessly and freely fixed. Is provided with adjusting means 11 and 11a having means for fixing the slide rod 18 to the floor. In this case, the ramp 1 can be set up without any need for adjustment, and the slide bar 18 can be adjusted in a stepless manner, so that a fine adjustment can be made and the horizontal state of the tread plate 2 can be easily set. . Also, a pair of slide rods 18
Is independent, so that even if the slab of the veranda B has irregularities and irregularities, it can cope with it.

A pair of fixtures 40, 40 having a clamp 42 fixed to the lower surface of the front end of the base 41 fixed to the side end of the tread plate 2.
a is mounted on the front end side of the tread plate 2, so that by laying the ramp 1 so as to straddle the handrail C of the veranda B, a passage can be formed between the scaffold A and the veranda B. Since the ladder portion 3 has a means for installing on the veranda B, the erection work with the handrail C therebetween can be performed very easily. Further, since the connecting members 47 are fixed to the side end portions of the tread plates 2 of the two facing laps 1 so as to straddle both the tread plates 2, the two connecting members 47 are fixed.
Can connect two ramps 1 by
The ramp 1 can also be used as a scaffold A for work at height. Accordingly, since one pair of fixing devices 40 and 40a and one connecting member 47 can be used for one tarp 1, the versatility of the tarp 1 can be improved by setting them as one set. I can do it.

Further, frame pipe holders 50 are provided on both sides of the side rods 5 and 5a of the ladder portion 3, and one frame pipe holder 55 is provided on the outer surface of the fixtures 40 and 40a. Two frame tube holders 56, 56a are provided on the side surfaces, respectively, and the frame tube holders 50, 55, 56,
Since the vertical frame pipes 66, 66a of the safety safety frames 65, 65a are fitted and held in the 56a, the fall from the overlap 1 to the space between the scaffold A and the veranda B, or the height of the two overlaps 1 The safety can be ensured by preventing the scaffold for work at the place from falling from the side.

Also, side frame pipes 68 of the ramp safety frames 65, 65a,
Scaffolding safety frame 7 via connecting bracket 69, 69a… to 68a
2, side frame tubes 73, 73a of 72a are mounted to be rotatable up and down, and horizontal frame tubes 75, 75a of scaffolding safety frames 72, 72a are detachable from the side frame tubes 73, 73a. Clamps 80 and 80a for fixing to the scaffolding frame 8 of the scaffold A are provided at the ends of the telescopic tubes 79 and 79a which can be freely moved to and from the frame pipes 75 and 75a. 1 is a right-angled passage, but even when materials are being conveyed, the ladder 3 of the ramp 1 is moved up and down to form a scaffold A.
When the vehicle turns, the scaffold safety frames 72 and 72a are present on the scaffold A that is continuous with the ramp 1, so that the safety can be improved.
On the other hand, when used as a scaffold for working at height, the unnecessary and disturbing scaffold safety frames 72, 72a can be removed.
In addition, when the clamps 80, 80a are attached to the scaffold safety frames 72, 72a, the telescopic tubes 79, 79a are provided, so that the scaffold safety frames 72, 72a can be easily fixed to the scaffold A having a dimensional difference. The practical effect is enormous.

[Brief description of the drawings]

FIG. 1 is a side view of a ramp.

FIG. 2 is an enlarged side view of a main part of a veranda ramp attached with a fixture to a scaffold.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an enlarged side view of an essential part of a scaffold for working at a high place where two ramps are connected.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is an enlarged sectional view of a main part showing a mounting structure of a fixture and a connector.

FIG. 7 is an enlarged sectional view of a main part of the adjusting device.

FIG. 8 is an enlarged perspective view of a main part of the adjusting device.

FIG. 9 is a view showing a disassembled, assembled, and folded state of the ramp.

FIG. 10 is an enlarged view of a main part of a side surface of a ramp provided with an opening prevention plate.

FIG. 11 is an enlarged side view showing a connection structure between a tread plate and a ladder portion on the veranda side.

FIG. 12 is an enlarged side view showing a state where the ladder part is swung in FIG.

FIG. 13 is an enlarged rear view as viewed from the veranda side of FIG. 11;

FIG. 14 is a side view of the entire veranda for the veranda with the safety frame attached to the tarp and the scaffold.

FIG. 15 is a rear view as viewed from the veranda side of FIG. 14;

FIG. 16 is a cross-sectional view of the frame tube holder attached to the ladder portion of the ramp.

FIG. 17 is a diagram showing a connecting portion between the ramp safety frame and the scaffold safety frame.

FIG. 18 is a sectional view of a connection bracket.

FIG. 19 is a cross-sectional view showing a connection structure between a side frame pipe and a horizontal frame pipe in the scaffold safety frame.

FIG. 20 is a side view of the scaffold for working at height with the safety frame attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Trap 2 Step board 3 Ladder part 5 and 5a Side rod 8 Scaffolding frame 11 and 11a Adjustment device 18 Slide rod 40 and 40a Fixing tool 41 Base 42 Clamp 46 and 46a Connecting tool 50 Frame pipe holder 65 and 65a Trap safety frame 68 , 68a Side frame pipe 69, 69a… Connecting bracket 72, 72a Scaffold safety frame 73, 73a Side frame pipe 75, 75a Horizontal frame pipe 79, 79a Telescopic tube 80, 80a Clamp A Scaffold

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI E06C 7/18 E06C 7/18

Claims (2)

[Claims] 1. A ladder portion is attached to a rear end side of a rectangular tread plate, and a pair of slide bars having a grounding portion are arranged below a pair of side rods of the ladder portion so as to be independently movable. In a ramp provided with an adjusting device having means for fixing the slide bar to the side bar of the ladder portion so that the height of the slide bar can be adjusted steplessly and freely fixed, the ramp and the front end of the tread plate are provided. A pair of fixtures with a clamp fixed to the lower surface of the front end of the base fixed to the side end of the tread plate attached to the side, and both tread plates straddle the side end portions of the tread tread plates opposed to each other. A general-purpose tarp characterized by a connecting tool fixed in this manner. 2. A frame pipe holder is provided on both sides of a side rod of a ladder part, one frame pipe holder is provided on an outer surface of a fixing tool, and two frame pipe holders are provided on an outer surface of a connecting tool. The vertical frame pipe of the safety ramp is fitted to and held by the frame pipe holder, and the side frame pipe of the scaffolding safety frame is pivotally moved up and down via the connecting bracket to the side frame pipe of the safety ramp frame. Aside from the side frame tube, the horizontal frame tube of the scaffold safety frame can be freely attached to and detached from the side frame tube, and a clamp is provided at the end of a telescopic tube provided on the horizontal frame tube so as to be able to move forward and backward. 2. The general-purpose tarp according to claim 1, wherein: