JPH06307177A - Working bench to be attached to ladder - Google Patents

Abstract

PURPOSE:To make it possible to attach a working bench to a ladder easily by attaching it at a lower side, to make it possible to go up from between both right and left fixed scaffold boards even if it is attached to a lower side and to use it safely and conveniently. CONSTITUTION:Both right and left fixed scaffold boards 1 and 2 are attached to bearing brackets 12 and 22 and horizontal frames 13 and 23, and a folding scaffold board 3 is so attached between both right and left scaffold boards 1 and 2 that it can be folded to the front side while projecting it upward from approximately a horizontal state. Interlocking pieces 35 and 35 attached to a ladder rung are attached to the bearing brackets 12 and 22, and a coupling frame 4 connects both right and left scaffold boards 1 and 2 on the front sides. A ladder is attached to a wall, etc., a worker goes up the ladder, and in the case the worker reaches a lower side of the ladder rung having height easy to work, the interlocking pieces 35 and 35 are attached, the folding scaffold board 3 is folded while projecting it upward, the worker passes through between the fixed scaffold boards 1 and 2 to go up upward, the folding scaffold board 3 is pulled down to an initial state, and work is executed on the fixed scaffold boards 1 and 2 and folding scaffold board 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder-mounted workbench, and more particularly to a ladder-mounted workbench used by being mounted on a ladder step of a work ladder.

[0002]

2. Description of the Related Art Conventionally, as this type of workbench, the workbench described in Japanese Utility Model Publication No. 55-9386 is known. Figure 6
Indicates the workbench described in the above publication, and this workbench is provided with a scaffold plate 101 and a ladder step rail (hereinafter, simply referred to as a step rail) that is provided so as to project in front of the scaffold board 101 and has a height suitable for work. ) 105, an upper locking piece 102, and a supporting arm 103 provided on the rear side of the scaffold plate so as to project downward.
And a lower engaging piece 104 provided at the lower end of the support arm 103 and attached to the step bar 106 one step below the step bar 105.

[0003]

However, the conventional workbench described above has problems that it is inconvenient to use and lacks safety consideration. That is, the worker climbs up to the ladder with the work table, and the step 1 having a height suitable for the work.
When it reaches the lower side of 05, the upper locking piece 102 is attached to the step rail 105, and the lower locking piece 104 is further attached to the step rail 106 one step lower. Then, the scaffolding board 101 covers the operator's head, so that
In order to work on 01, the scaffolding board 101 must be crossed. However, since the scaffolding plate 101 projects backwards for a long time, it is difficult to cross the scaffolding plate 101.

On the other hand, a step 1 having a height suitable for the worker to work
If the workbench is raised to a level one step higher than 05 and the workbench is attached to the level crossing 105, the problem of crossing the scaffolding board 101 is solved. However, in this case, the waist is bent while being mounted on the step rail which is one step higher, and the upper locking piece 102 is attached to the lower step rail 105. The operation is to hang the lower locking piece 104, and this operation is very dangerous. Such a problem also occurs when the workbench is removed. By narrowing the width of the scaffolding board 101 in the front-rear direction, the danger and difficulty as described above can be avoided.
Workability on 01 becomes poor.

The present invention has been made in view of the above circumstances, and can be easily and safely attached and detached without narrowing the width of the scaffolding board, and even after the attachment, the scaffolding board can be used. The purpose is to provide a ladder-mounted workbench that can be easily lifted and lowered.

[0006]

In order to solve the above-mentioned problems, a ladder-mounted workbench according to claim 1 has left and right fixed scaffolding plates, a central folding scaffolding plate, and the left and right scaffolding plates. And a connecting member for connecting the folding scaffolding plate in the central part to each other on the front side, the front side of the work table for locking the work platform to a ladder step. It is characterized in that a locking piece is provided.

The ladder-mounted workbench according to a second aspect of the present invention is characterized in that the folding scaffolding plate is attached so as to be able to be pulled up from the rear side to the front side and folded while projecting upwardly.

Further, in the ladder-mounted workbench according to a third aspect of the present invention, support arms projecting downward are provided at the rear sides of the left and right fixed scaffold plates, respectively, and the lower end of each support arm is one step lower than the ladder rail. It is characterized in that a locking piece for locking to is provided.

Furthermore, the ladder mounting type workbench according to a fourth aspect is characterized in that the support arm and / or the locking piece is rotatably provided.

[0010]

In order to use the ladder-mounted workbench of the present invention,
First, when the worker climbs up the ladder with this ladder-mounted work table and arrives at the underside of the step rail of a height suitable for work, the locking piece protruding in front of this ladder-mounted work table. Attach to the step. Further, when the support arm is provided (in the case of the structure according to claim 3), the locking piece provided at the lower end of the support arm is attached to the step rail one step below. After that, the folding scaffolding plate is folded forward, for example, while protruding upward, and the worker climbs up the ladder through the space between the left and right fixed scaffolding plates. At this time, since the connecting member that connects the left and right fixed scaffold plates is provided on the front side close to the step rail, there is no obstacle for an operator to move up and down between the left and right fixed scaffold plates.

When the width of the scaffolding board is small, the rotation moment is small even if the operator rests on the scaffolding board.
The load of the worker can be supported by the locking piece that is locked to the cross rail, but if the scaffolding plate becomes wider in the front-rear direction, the load of the worker placed on it cannot be supported. A ladder-mounted workbench according to claim 3 or 4 is preferable, in which a support arm is attached to the rear side of the work plate, and the support arm is attached to and supported by the step rail one step below.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a state in which a folding scaffolding plate is horizontally spread, showing a configuration of a ladder-mounted workbench (hereinafter, also simply referred to as a workbench) which is an embodiment of the present invention. FIG. 3 is a perspective view showing a configuration of the workbench, and is a perspective view showing a state in which the folding scaffolding plate is folded while projecting upward, and FIG. 3 is a cross-sectional view showing a state in which the workbench is attached to a step rail. Is.

In these drawings, reference numeral A indicates a work platform of this example. The work platform A includes a left fixed scaffolding plate 1 and a right fixed scaffolding plate 2 which are attached to the left and right, and a folding scaffolding which is attached to a central portion. It is outlined from the board 3. The left and right fixed scaffolding plates 1 and 2 have the same shape as each other, and both are made of steel or aluminum face plates 11 and 21 serving as scaffolding floors, and co-supports for supporting the face plates 11 and 21 from the lower side. The support brackets 12 and 22 are made of V-shaped lightweight steel, and the lateral frames 13 and 23 are triangular.
The support brackets 12 and 22 are in a state in which the side edges are projected inward along the inner side edges of the lower surfaces of the left and right fixed scaffolding boards 1 and 2, and the horizontal frames 13 and 23 are fixed scaffolding boards. They are provided along the rear side edges of the lower surfaces 1 and 2, respectively. The left and right fixed scaffold plates 1 and 2 are connected to each other by a connection frame 4 fixed to the front side of the scaffold plates 1 and 2 with a predetermined distance (approximately 50 cm in this example) therebetween.

In the folding scaffolding plate 3, three scaffolding plates, namely, a scaffolding rear plate 31, an intermediate scaffolding plate 32, and a scaffolding front plate 33 are rotatably attached to each other by hinges 34, 34 ,. With the front end of the scaffolding front plate 33, hinges 34, 34 are attached to the crosspieces 35 that are passed to the front sides of the left and right fixed scaffolding plates 1, 2.
It is attached so that it can rotate upwards. After all,
When the folding scaffolding plate 3 is pulled toward the front side by holding the end of the scaffolding rear plate 31, as shown in FIG. 2, it can be folded while projecting upward. When the folding scaffolding plate 3 is placed in a substantially horizontal state, the left and right fixed scaffolding plates 1, 2 are
The support brackets 12 and 22 are mounted on the side edges of the support brackets 12 and 22 protruding inward so that they cannot rotate further downward. Then, the upper surfaces of the left and right fixed scaffolding plates 1 and 2 and the upper surface of the folding scaffolding plate 3 are configured to be substantially flush with each other.

Further, reference numeral 5 is a U-shaped steel-made locking piece that opens downward, and there are two locking pieces 5, and the support brackets 12 of the left and right fixed scaffolding plates 1, 2 are provided. It is provided at the tip of 22 in a state of protruding forward. Then, as shown in FIG. 3, when the step bar 61 of the ladder 6 is put in the lower opening of the locking piece 5 and fastened with the bolt 51a and the nut 51b, the lower opening is closed and the step bar 61 is engaged. It can be stopped.

Next, a method of using the workbench A will be described. The ladder 6 is hung on the wall or roof tip of a house, etc., and the worker holds the workbench A to climb up the ladder 6 and arrives at the underside of the step 61 with a height suitable for work such as mounting exteriors and eaves gutters. At this time, the locking piece 5 of the workbench A is hung on the stepping bar 61, the stepping bar 61 is inserted in the opening, and the opening is closed with the bolt 51a and the nut 51b, so that the workbench A is attached to the stepping bar 61. In this way, the workbench A can be easily attached to the step rail 61 from below.

Next, the folding scaffolding plate 3 is folded and brought closer to the front side, and the worker rises upward from between the left and right fixed scaffolding plates 1 and 2. At this time, since the connecting frame 4 connecting the left and right fixed scaffolding plates 1 and 2 and the folded folding scaffolding plate 3 are located near the front crosspiece 61 on the front side, the worker fixes the left and right sides. There is no problem in climbing up from between the scaffold plates 1 and 2. Ascend between the left and right fixed scaffolding boards 1, 2 to the right fixed scaffolding board 2
Then, when the folding scaffolding plate 3 is pushed down to the state before being folded and closed, the tip of the folding scaffolding plate 3 is supported by the support bracket 12,
It comes into contact with the side edge of 22 and does not rotate downward any more, and becomes a substantially horizontal state. When the folding scaffolding plate 3 is thus made substantially horizontal, the folding scaffolding plate 3 is passed between the left and right fixed scaffolding plates 1 and 2, and the flat surface spreads, on which work such as painting and mounting of eaves gutters can be performed with confidence. it can. When the worker finishes the work and gets off, he / she can get off the ladder 6 in the reverse order of the ascending procedure. That is, the folding scaffolding plate 3 is folded to the front side,
When the user descends between the left and right fixed scaffold plates 1 and 2 to a height substantially the same as the workbench A, the workbench A can be detached and can be descended along the ladder.

FIG. 4 is a perspective view showing the construction of a workbench according to another embodiment of the present invention, and FIG. 5 is a sectional view showing a state in which the workbench is attached to a step rail. The workbench of this example is largely different from the workbench A of FIG. 1 in that the support arm 7 is rotatably attached to the lower rear side of the support brackets 12a and 22a of the fixed scaffolding plates 1a and 2a. The point is that the lower end of the support arm 7 is rotatably attached with a locking piece 8 for locking the step bar 62 one step below. Therefore, in FIGS. 4 and 5, FIGS.
The same numerals are added to the same components as those of the above, and the description thereof will be omitted.

According to the method of using the workbench B, when the worker holds the workbench B and climbs the ladder 6a and arrives at the lower side of the step 61a having a height suitable for the work, the workbench B The locking piece 5a is locked to the step rail 61a, and further, the locking piece 8 is set to 1
It is locked to the step rail 62 under the step. Next, the folding scaffolding plate 3a is folded while projecting upward, and the left and right fixed scaffolding plates 1 are folded.
After ascending between a and 2a, the folding scaffolding plate 3a is pushed down to be substantially horizontal, and then on the left and right fixed scaffolding plates 1a and 2a and the folding scaffolding plate 3a which are flush with each other. Do the work. According to this example, the locking piece 8 is one step lower than the step bar 6.
2a, the support arm 7 is fixed to the fixed scaffolding plate 1a, 2a
Since it supports the rear side of the left and right fixed scaffolding plates 1a, 2a
Even when the scaffolding board is placed on the folding scaffolding board 3a, the scaffolding board does not rotate downward, so that it is possible to work with more peace of mind.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific structure is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention. For example, the constituent materials of the folding scaffolding plate are not limited to the three scaffolding back plates, the middle scaffolding plate, and the scaffolding front plate, and may be increased or decreased as appropriate. Further, the rotating tool is not limited to the hinge but may be a shaft member. In the above-described embodiment, the folding scaffolding plate is projected upward, and the folding scaffolding plate is pulled from the rear side to the front side to be folded. However, the folding scaffolding plate may be pulled in the left-right direction to be folded.

Further, in the above-mentioned embodiment, the crosspiece 35 is passed over the front sides of the left and right fixed scaffolding plates 1 and 2, and the crosspiece 35 is provided.
Although the case where the folding scaffolding plate 3 is attached so as to be able to be folded upward has been described above, the invention is not limited to the case 35, and the connecting member 4
The folding scaffolding plate 3 may be attached so as to be foldable, or a rotary shaft for rotating the folding scaffolding plate 3 may be provided between the left and right fixed scaffolding plates 1 and 2.

As described above, in the ladder-mounted workbench according to the first aspect, the folding scaffolding plate is provided between the left and right fixed scaffolding plates, so the workbench should be attached from below. Can be easily installed,
Even when mounted from below, the folding scaffolding plate can be folded while projecting upward, and the worker can move up and down between the left and right fixed scaffolding plates, as there is no need to go over the scaffolding plate as in the past. , Easy to use and safe.
Moreover, since the frames of the left and right fixed scaffolding plates are connected to each other on the front side, there is no hindrance when going up and down between the left and right fixed scaffolding plates, which is comfortable to use.

Further, in the ladder-mounted workbench according to a second aspect of the present invention, the support arms are provided so as to project downward on the rear frames of the left and right fixed scaffolding plates, and the locking pieces are provided at the lower ends thereof. Since it is to be locked to the step rail below, the left and right fixed scaffolding boards and folding scaffolding boards are supported by the support arm and do not rotate downward, so work on the scaffolding board with more peace of mind. You can

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a ladder-mounted workbench according to an embodiment of the present invention and showing a state in which a folding scaffolding plate is horizontally spread.

FIG. 2 is a perspective view showing a configuration of a ladder-mounted workbench according to an embodiment of the present invention, showing a state in which the folding scaffolding plate is folded while projecting upward.

FIG. 3 is a cross-sectional view showing a state in which the workbench is attached to a step rail.

FIG. 4 is a perspective view showing a configuration of a ladder-mounted workbench according to another embodiment of the present invention, showing a state in which a folding scaffold plate is spread out substantially horizontally.

FIG. 5 is a cross-sectional view showing a state in which the workbench is attached to a step rail.

FIG. 6 is a cross-sectional view showing a state in which a conventional ladder-mounted workbench is mounted on a step rail.

[Explanation of symbols]

 1 Left side fixed scaffolding board 2 Right side fixed scaffolding board 3 Folding scaffolding board 4 Connecting frame 5 Locking piece 6 Ladder 61 Stepping bar 62 One step lower stepping bar 7 Support arm 8 Locking piece at the lower end of the supporting arm

Claims (4)

[Claims] 1. A work comprising left and right fixed scaffold plates, a central folding scaffold plate, and a connecting member for connecting the left and right scaffold plates and the central folding scaffold plate to each other on the front side. A ladder-mounted workbench, characterized in that a locking piece for locking the workbench to the ladder step is provided on the front side of the workbench. 2. The ladder-mounting type workbench according to claim 1, wherein the folding scaffolding plate is attached so as to be able to be pulled up from the rear side to the front side and folded while being projected upward. 3. A support arm projecting downward is provided on the rear side of each of the left and right fixed scaffolding plates, and a locking piece for locking the ladder step bar one step below is provided at the lower end of each support arm. The ladder-mounted workbench according to claim 1 or 2, characterized in that. 4. The ladder-mounted workbench according to claim 3, wherein the support arm and / or the locking piece are rotatably provided.