JP2023038515A - Suspended scaffold system - Google Patents

Abstract

To provide an epoch-making suspended scaffold device which has not existed before.SOLUTION: In a suspended scaffold device, scaffold 1a installed under a bridge girder part 51 in a bridge 50 and having a length in the front and rear longitudinal direction and in the left and right lateral widthwise direction of the bridge girder part 51 are arranged in parallel in a state of projecting outward from the right and left edges of the bridge girder part 51 and provided in a suspended state from the bridge girder part 51; the scaffold 1a are separably connected to each other, and a scaffold lifting mechanism 3 is provided for raising and lowering the scaffold 1a projecting outward from the right and left edges of the bridge girder part 51 and separated from the other scaffold 1a while holding a horizontal state.SELECTED DRAWING: Figure 3

Description

The present invention relates to a suspended scaffolding device.

BACKGROUND ART Conventionally, a suspended scaffolding device (hereinafter referred to as "conventional example") disclosed in Japanese Patent Application Laid-Open No. 2021-67031 has been proposed as a scaffolding provided for repairing or inspecting bridge girders on a bridge.

In this conventional example, a scaffolding 1a, which is arranged below a bridge girder portion 51 of a bridge 50 and has a length in the front-rear longitudinal direction and the left-right width direction of the bridge girder portion 50, protrudes outward from the left and right edges of the bridge girder portion 51. The scaffolds 1a are arranged side by side to form a scaffolding body 1, and each scaffolding 1a constituting the scaffolding body 1 is provided in a suspended state from the bridge girder section 51 via the hanging members 2 that are suspended and connected to the bridge girder section 51. Among the hanging members 2 arranged between the bridge girder portion 51 and the scaffolding 1a, the left-right width direction outer end portion of the lateral scaffolding 1a projecting outward from the bridge girder portion 51 and the left-right width of the bridge girder portion 51 The hanging members 2 arranged between the direction outer ends are provided in an inclined state, and the hanging members 2 arranged between other portions are provided in a vertical state (see FIGS. 1 and 2).

Japanese Patent Application Laid-Open No. 2021-67031

By the way, for example, in the case where the lower part of the scaffolding 1 is a river, there is a demand to raise and lower the scaffolding 1 when passing fishing boats, when the water level rises, and when transporting materials. When attempting to ascend and descend the scaffolding 1a located on the side projecting outward from the left and right edges of the bridge, as described above, the lateral width direction outer end of the lateral scaffolding 1a and the lateral width direction outer end of the bridge girder portion 51 The suspension member 2 arranged between the section and the section is provided in an inclined state, while the other section (between the inner end in the lateral width direction of the scaffolding 1a and the inner part in the lateral width direction of the bridge girder section 51) Since the hanging member 2 is arranged in a vertical state, if the hanging member 2 is raised or lowered in that state to raise or lower the side scaffolding, the balance is poor, and therefore the horizontal state is lost. It was difficult to hold and move up and down stably.

The present inventors have further researched and developed a scaffold that is suspended below the above-mentioned bridge girder, and as a result, have developed an epoch-making suspending scaffold device that has never existed before.

The gist of the present invention will be described with reference to the accompanying drawings.

Scaffolds 1a arranged below a bridge girder portion 51 of a bridge 50 and having lengths in the front-rear longitudinal direction and the left-right width direction of the bridge girder portion 51 are arranged side by side in a state of protruding outward from the left and right edges of the bridge girder portion 51. The suspended scaffolding device is provided in a suspended state on the bridge girder portion 51, wherein the scaffoldings 1a are detachably connected to each other, protrude outward from the left and right edges of the bridge girder portion 51, and are separated from the other scaffoldings 1a. Further, the suspended scaffolding device is characterized by having a scaffolding lifting mechanism 3 for lifting and lowering the scaffolding 1a while maintaining the horizontal state.

Further, in the suspended scaffolding device according to claim 1, the scaffold lifting mechanism 3 is disposed vertically between a predetermined position at the inner end in the lateral width direction of the ascending and descending scaffold 1a and the bridge girder portion 51. A first hanging member 3A having a lowering function and a second hanging member 3A having a lifting function disposed in an inclined state between the bridge girder portion 51 and a predetermined position at the outer end in the lateral width direction of the scaffolding 1a to be raised and lowered. and a third suspension member 3C having a lifting function and arranged in an inclined state between a predetermined position on the inner side of the scaffolding 1a to be raised and lowered in the left-right width direction and the bridge girder portion 51. The second hanging member 3B and the third hanging member 3C are set to have opposite inclination directions.

Further, in the suspended scaffolding device according to claim 2, the first hanging member 3A is positioned at a predetermined front-rear position at the inner end portion in the left-right width direction of the ascending/descending scaffolding 1a and at a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. In addition, the second hanging member 3B is arranged in a vertical state between the front and rear predetermined positions at the left and right width direction outer end portions of the elevating scaffolding 1a and the front and rear positions at the left and right width direction outer end portions of the bridge girder portion 51. The third hanging member 3C is arranged in an inclined state between the predetermined position and the front and rear predetermined position on the inner side in the lateral width direction of the scaffold 1a to be raised and lowered and the front and rear on the outer end portion in the lateral width direction of the bridge girder portion 51. The present invention relates to a suspended scaffolding device characterized in that it is arranged in an inclined state between a predetermined position and the scaffolding device.

Further, in the suspended scaffolding device according to claim 1, the scaffold lifting mechanism 3 is disposed vertically between a predetermined position at the inner end in the lateral width direction of the ascending and descending scaffold 1a and the bridge girder portion 51. A first hanging member 3A having a lowering function and a second hanging member 3B having a lifting function disposed vertically between a predetermined position on the inner side in the left-right direction of the ascending and descending scaffolding 1a and the bridge girder portion 51. It relates to a suspended scaffolding device characterized by being composed of.

Further, in the suspended scaffolding device according to claim 4, the first hanging member 3A is positioned at a predetermined front-rear position at the inner end in the left-right width direction of the elevated scaffold 1a and at a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. and the second hanging member 3B is arranged between a predetermined front-rear position on the inner side in the left-right direction of the scaffolding 1a to be raised and lowered and a predetermined position on the outer side in the left-right width direction of the bridge girder portion 51. It relates to a suspended scaffolding device characterized in that it is arranged in a vertical state.

Further, in the suspended scaffolding device according to claim 1, the scaffold lifting mechanism 3 is disposed vertically between a predetermined position at the inner end in the lateral width direction of the ascending and descending scaffold 1a and the bridge girder portion 51. A first suspending member 3A having a lowering function, and a frame portion 4 provided in a protruding state at a predetermined position at the outer end in the lateral width direction of the scaffold body 1A to be raised and lowered and at the outer end in the lateral width direction of the bridge girder portion 51. It relates to a suspended scaffolding device characterized in that it is composed of a second hanging member 3B having a lifting function that allows it to be hung in a vertical state between the two.

Further, in the suspended scaffolding device according to claim 6, the first hanging member 3A is positioned at a predetermined front-rear position at the inner end in the left-right width direction of the scaffold 1a to be raised and lowered and at a predetermined position at the inner side in the left-right width direction of the bridge girder portion 51. The second hanging member 3B is arranged in a vertical state between and between the front and rear predetermined positions at the left and right width direction outer end portions of the elevating scaffold body 1A and the left and right width direction outer end portions of the bridge girder portion 51. The suspended scaffolding device is characterized in that the scaffolding device is suspended vertically between a pedestal portion 4 provided in a protruding state at a predetermined position in the front and rear.

In addition, in the suspended scaffolding device according to claim 1, the scaffolding lifting mechanism 3 is arranged vertically between a predetermined position at the left-right direction inner end of the scaffolding 1a to be raised and lowered and the bridge girder portion 51. A first hanging member 3A having a function and a second hanging member having a lifting function disposed in an inclined state between a predetermined position at the outer end in the left-right width direction of the scaffolding 1a to be raised and lowered and the bridge girder portion 51. The suspended scaffolding device is characterized by comprising a material 3B and a weight member 5 provided movably in the lateral direction of the scaffolding 1a to be raised and lowered.

Further, in the suspended scaffolding device according to claim 8, the first hanging member 3A is positioned at a predetermined front-rear position at the inner end in the left-right direction of the scaffolding 1a to be raised and lowered and at a predetermined position at the inner side in the left-right width direction of the bridge girder portion 51. The second hanging member 3B is arranged in a vertical state between the above-mentioned second hanging member 3B and a predetermined front-rear position at the left-right width direction outer end of the lifting scaffold 1a and a front-rear predetermined position at the left-right width direction outer end of the bridge girder portion 51. It relates to a suspended scaffolding device characterized in that it is arranged in an inclined state between a position and a position.

Further, in the suspended scaffolding device according to any one of claims 1 to 9, a suspension member having a driving unit 6 is adopted as the suspension member having the lifting function, and the horizontal state of the lifting scaffold 1a is controlled. A suspended scaffolding device comprising: a horizontal detector 7 for detecting; It is related to

Since the present invention is configured as described above, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding is stable and the work can be carried out satisfactorily. It becomes an epoch-making suspended scaffolding device that does not exist.

FIG. 10 is an explanatory diagram of a conventional example; FIG. 11 is a perspective view for explaining a main part according to a conventional example; FIG. 2 is an explanatory diagram of a main part according to Example 1; FIG. 2 is a perspective view showing a main part according to Example 1; FIG. 4 is an operation explanatory diagram of the first embodiment; FIG. 4 is an operation explanatory diagram of the first embodiment; FIG. 11 is an explanatory diagram of a main part according to Example 2; FIG. 11 is a perspective view showing a main part according to Example 2; FIG. 11 is an operation explanatory diagram of the second embodiment; FIG. 11 is an operation explanatory diagram of the second embodiment; FIG. 11 is an explanatory diagram of a main part according to Example 3; FIG. 11 is a perspective view showing a main part according to Example 3; FIG. 11 is an operation explanatory diagram of Example 3; FIG. 11 is an operation explanatory diagram of Example 3; FIG. 11 is an explanatory diagram of a main part according to Example 4; FIG. 11 is a perspective view showing a main part according to Example 4; FIG. 11 is an operation explanatory diagram of Example 4; FIG. 11 is an operation explanatory diagram of Example 4;

A preferred embodiment of the present invention will be briefly described with reference to the drawings showing the operation of the present invention.

According to the present invention, the scaffolding 1a having lengths in the front-rear longitudinal direction and the left-right width direction of the bridge girders 51 is arranged below the bridge girders 51 in the bridge 50 .

Specifically, the scaffoldings 1a are juxtaposed so as to protrude outward from the left and right edges of the bridge girder portion 51 to form the scaffolding body 1, and the scaffoldings 1a are connected to each other in a separable manner. It is provided in the bridge girder section 51 in a suspended state via the hanging member 2 which is connected to the section 51 in a suspended manner.

In the present invention, the scaffolding 1a projecting outward from the left and right edges of the bridge girder 51 is separated from the other scaffoldings 1a, and a scaffolding elevating mechanism 3 is provided for lifting and lowering the separated scaffolding 1a while maintaining its horizontal state. .

Therefore, the use of the ascending/descending scaffolding 1a is convenient for, for example, transportation of materials, and moreover, the ascending/descending of the scaffolding 1a is stable, and the work can be carried out satisfactorily.

A specific embodiment of the present invention will be described with reference to the drawings.

In this embodiment, a scaffolding 1a disposed below a bridge girder portion 51 of a bridge 50 and having lengths in the front-rear longitudinal direction and the left-right width direction of the bridge girder portion 51 protrudes outward from the left and right edges of the bridge girder portion 51. The suspended scaffolding device is provided in a suspended state from the bridge girder portion 51 in parallel with each other in a state in which the scaffolds 1a are connected to each other in a separable manner and protrude outward from the left and right edges of the bridge girder portion 51. It has a scaffold lifting mechanism 3 for lifting and lowering the scaffold 1a separated from the scaffold 1a while maintaining the horizontal state. The bridge pier 51 is composed of a floor slab 51a and a main girder 51 provided under the floor slab 51a and connected to the upper end of the pier 52. As shown in FIG.

In this embodiment, a plurality of scaffolding bodies 1 are arranged side by side in the longitudinal direction of the bridge girder section 51, and adjacent scaffolding bodies 1 (scaffolding 1a) are connected to each other in a separable manner. ing.

Specifically, as shown in FIGS. 1 and 2, the scaffolding 1a is constructed by installing a scaffolding plate on an appropriate rectangular frame made of metal. The scaffolding 1a is not limited to the structure described above.

The hanger 2 is an appropriate metal chain member, as shown in FIGS. .

In FIGS. 1 and 2, the hanging members indicated by the dashed lines mean the hanging members arranged vertically, and the hanging members indicated by the solid lines mean the hanging members arranged in an inclined manner. The sling members 2 arranged in an inclined shape are attached to the bridge girder portion 51 and the left-right width direction outer end portion of the scaffolding 1a at the most side end projecting outward from the left and right edges of the bridge girder portion 51 in the left-right width direction. Since it is arranged between the left and right width direction outer end portions of , it is in an inclined state.

In addition, in this embodiment, the scaffold 1a protruding outward from the left and right edges of the bridge girder portion 51 of the scaffolding body 1 is separated from the other scaffolding 1a, and the separated scaffolding 1a is maintained in a horizontal state to move up and down. A lifting mechanism 3 is provided.

In this embodiment, as the scaffold lifting mechanism 3, the following four structures (first to fourth embodiments) are provided. In this embodiment, as described above, the scaffolding 1a constituting the scaffolding body 1 is suspended from the bridge girder section 51 via the hanging members 2 that are connected to the bridge girder section 51 in a suspended manner. The scaffolding elevating mechanism 3 is provided on the elevating scaffolding 1a when it is necessary to elevate the scaffolding 1a. .

<Example 1>
The scaffold lifting mechanism 3 according to the present embodiment is arranged vertically between a predetermined front-rear position at the inner end in the left-right width direction of the scaffold 1a to be raised and lowered and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. A pair of front and rear first hanging members 3A having a lowering function are inclined between a predetermined front and rear position at the outer end in the left and right width direction of the scaffolding 1a to be raised and lowered and a predetermined position at the outer end in the left and right width direction of the bridge girder portion 51. A pair of front and rear second hanging members 3B having a lifting function and a predetermined position on the inner side in the lateral width direction of the scaffolding 1a to be raised and lowered, and a predetermined position on the outer side in the lateral width direction of the bridge girder portion 51. The second suspension member 3B and the third suspension member 3C are arranged in an inclined state between the front and rear third suspension members 3C. The member 3B is set in an inclination direction in which the bridge girder portion 51 falls outward, and the third hanging member 3C is set in an inclination direction in which the bridge girder portion 51 falls inward.

The first suspension member 3A, the second suspension member 3B, and the third suspension member 3C, which are equipped with a lifting and lowering function and constitute the scaffold lifting mechanism 3, are driven by a drive unit 6 (winding means) as shown in FIGS. Suspension material (electric chain hoist) with Incidentally, the hanging member (wire) provided with the electric winch as the driving portion 6 may be used as the hanging member provided with the driving portion 6, and any other hanging member (wire) provided with the characteristics of the present embodiment may be appropriately adopted.

The first suspension member 3A, the second suspension member 3B and the third suspension member 3C are arranged between the bridge girder portion 51 and the ascending/descending scaffolding 1a. 1a is disconnected from another scaffolding 1a connected to the scaffolding 1a, and in this state, the drive units 6 of the first hanging member 3A, the second hanging member 3B, and the third hanging member 3C are driven. It becomes possible to raise and lower the scaffolding 1a (see FIGS. 5 and 6). In FIGS. 3, 4, 5, and 6, the hanging members indicated by chain lines mean the hanging members arranged vertically, and the hanging members indicated by solid lines mean the hanging members arranged in an inclined manner. there is

Therefore, the scaffolding 1a tilts with only the first hanging member 3A and the second hanging member 3B, but when the scaffolding 1a to be raised and lowered is separated from the other scaffolds 1a by disposing the third hanging member 3C (when raising and lowering the scaffolding 1a) ) is kept horizontal.

Further, in this embodiment, the horizontal detection unit 7 detects the horizontal state of the scaffolding 1a that moves up and down, and based on the detection result of the horizontal detection unit 7, the driving of each driving unit 6 is controlled so as to maintain the horizontal state of the scaffolding 1a. It has a control unit (not shown) for controlling.

As shown in FIG. 3, the horizontal detection unit 7 is composed of a laser rangefinder provided at a position above the scaffolding 1a that moves up and down at a predetermined position on the lower surface of the bridge girder 51. This horizontal detection unit 7 (laser rangefinder) By measuring the distance to the upper surface of the scaffolding 1a, it is detected whether the scaffolding 1a is horizontal or not.

Therefore, in addition to maintaining the horizontal state of the scaffolding 1a by the method of suspending the hanging members described above, the horizontal state of the scaffolding 1a can also be maintained by driving the hanging members by the control unit for controlling the driving of each driving unit 6 and the horizontal detection unit 7. can be held.

Incidentally, the horizontal detector 7 is not limited to the laser rangefinder, and may be various sensors such as a level meter, and any sensor that exhibits the characteristics of the present embodiment can be used as appropriate.

Since the present embodiment is configured as described above, the scaffolding 1a is raised and lowered by driving the drive units 6 of the first suspension members 3A, the second suspension members 3B and the third suspension members 3C. is stably performed while the horizontality of the scaffolding 1a is being detected by the horizontal detection unit 7.

Therefore, according to the present embodiment, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding 1a is stabilized and the work can be carried out satisfactorily.

In addition, in this embodiment, the horizontal state when the scaffolding 1a to be raised and lowered is separated from the other scaffolds 1a (at the time of raising and lowering) is easily and reliably maintained by arranging the third hanging members 3C.

<Example 2>
The scaffold lifting mechanism 3 according to the present embodiment is arranged vertically between a predetermined front-rear position at the inner end in the left-right width direction of the scaffold 1a to be raised and lowered and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. A pair of front and rear first hanging members 3A having a lowering function are arranged in a vertical state between a predetermined front and rear position on the inner side in the left and right direction of the scaffolding 1a to be raised and lowered and a predetermined position on the outer side in the left and right width direction of the bridge girder section 51. It is composed of a pair of front and rear second hanging members 3B having a lifting and lowering function.

The first suspension member 3A and the second suspension member 3B having a lifting and lowering function that constitute the scaffold lifting mechanism 3 are suspension members ( electric chain hoist). Incidentally, the hanging member (wire) provided with the electric winch as the driving portion 6 may be used as the hanging member provided with the driving portion 6, and any other hanging member (wire) provided with the characteristics of the present embodiment may be appropriately adopted.

The first hanging member 3A and the second hanging member 3B are arranged between the bridge girder portion 51 and the ascending/descending scaffolding 1a, and the previously arranged hanging members 2 are removed, and the ascending/descending scaffolding 1a and the scaffolding 1a The scaffolding 1a can be raised and lowered by releasing the connection with the other connected scaffolding 1a and driving the first hanging members 3A and the respective drive units 6 in this state (see FIGS. 9 and 10). . In FIGS. 7, 8, 9 and 10, the hanging members shown by chain lines mean the hanging members arranged vertically, and the hanging members shown by solid lines mean the hanging members arranged in an inclined manner. there is

Therefore, by suspending the scaffolding 1a with the first hanging member 3A and the second hanging member 3B arranged vertically, when the scaffolding 1a to be raised and lowered is separated from the other scaffolds 1a (at the time of raising and lowering), It remains horizontal.

Further, in this embodiment, the horizontal detection unit 7 detects the horizontal state of the scaffolding 1a that moves up and down, and based on the detection result of the horizontal detection unit 7, the driving of each driving unit 6 is controlled so as to maintain the horizontal state of the scaffolding 1a. It has a control unit (not shown) for controlling.

As shown in FIG. 9, the horizontal detection unit 7 is composed of a laser rangefinder provided above the scaffolding 1a that moves up and down at a predetermined position on the lower surface of the bridge girder 51. This horizontal detection unit 7 (laser rangefinder) By measuring the distance to the upper surface of the scaffolding 1a, it is detected whether the scaffolding 1a is horizontal or not.

Therefore, in addition to maintaining the horizontal state of the scaffolding 1a by the method of suspending the hanging members described above, the horizontal state of the scaffolding 1a can also be maintained by driving the hanging members by the control unit for controlling the driving of each driving unit 6 and the horizontal detection unit 7. can be held.

Incidentally, the horizontal detector 7 is not limited to the laser rangefinder, and may be various sensors such as a level meter, and any sensor that exhibits the characteristics of the present embodiment can be used as appropriate.

Since this embodiment is configured as described above, the scaffolding 1a is raised and lowered by driving the drive units 6 of the first suspension members 3A and the second suspension members 3B. is stably performed while detecting the levelness of the scaffolding 1a.

Therefore, according to the present embodiment, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding 1a is stabilized and the work can be carried out satisfactorily.

In addition, in this embodiment, the horizontal state when the scaffolding 1a to be raised and lowered is separated from the other scaffolding 1a (at the time of raising and lowering) by arranging the first hanging member 3A and the second hanging member 3B vertically is simple and securely retained.

<Example 3>
The scaffold lifting mechanism 3 according to the present embodiment is arranged vertically between a predetermined front-rear position at the inner end in the left-right width direction of the scaffold 1a to be raised and lowered and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. A pair of front and rear first hanging members 3A having a lowering function, and a front and rear pair provided in a protruding state at predetermined positions in the lateral width direction outside ends of the scaffold body 1A to be raised and lowered and in the lateral width direction outside ends of the bridge girder portion 51. It is composed of a pair of front and rear second hanging members 3B having a lifting and hanging function to be hung in a vertical state between the pedestal part 4 and the second hanging member 3B.

The first suspension member 3A and the second suspension member 3B, which have a lifting and lowering function and constitute the scaffold lifting mechanism 3, are suspension members ( electric chain hoist). Incidentally, the hanging member (wire) provided with the electric winch as the driving portion 6 may be used as the hanging member provided with the driving portion 6, and any other hanging member (wire) provided with the characteristics of the present embodiment may be appropriately adopted.

As shown in FIGS. 11 and 12, the pedestal 4 is formed of a suitable metal member, and has a connecting portion 4a that is detachably connected to the outer end portion of the bridge beam portion 51 in the left-right width direction. and a suspending portion 4b which protrudes from the connecting portion 4a and connects the upper end portion of the second suspending member 3B by suspending.

The first hanging member 3A and the second hanging member 3B are arranged between the bridge girder portion 51 and the ascending/descending scaffolding 1a, and the previously arranged hanging members 2 are removed, and the ascending/descending scaffolding 1a and the scaffolding 1a By releasing the connection with the other connected scaffolding 1a and driving the first hanging members 3A and the respective drive units 6 in this state, the scaffolding 1a can be raised and lowered (see FIGS. 13 and 14). . In FIGS. 11, 12, 13 and 14, hanging members indicated by chain lines are arranged vertically, and hanging members shown by solid lines are arranged inclined.

Therefore, by suspending the scaffolding 1a with the first hanging member 3A and the second hanging member 3B arranged vertically, when the scaffolding 1a to be raised and lowered is separated from the other scaffolds 1a (at the time of raising and lowering), It remains horizontal.

Further, in this embodiment, the horizontal detection unit 7 detects the horizontal state of the scaffolding 1a that moves up and down, and based on the detection result of the horizontal detection unit 7, the driving of each driving unit 6 is controlled so as to maintain the horizontal state of the scaffolding 1a. It has a control unit (not shown) for controlling.

The horizontal detection unit 7 is composed of a laser rangefinder provided above the scaffolding 1a which moves up and down at a predetermined position on the lower surface of the bridge girder 51 as shown in FIG. By measuring the distance to the upper surface of the scaffolding 1a, it is detected whether the scaffolding 1a is horizontal or not.

Therefore, in addition to maintaining the horizontal state of the scaffolding 1a by the method of suspending the hanging members described above, the horizontal state of the scaffolding 1a can also be maintained by driving the hanging members by the control unit for controlling the driving of each driving unit 6 and the horizontal detection unit 7. can be held.

Incidentally, the horizontal detector 7 is not limited to the laser rangefinder, and may be various sensors such as a level meter, and any sensor that exhibits the characteristics of the present embodiment can be used as appropriate.

Since this embodiment is configured as described above, the scaffolding 1a is raised and lowered by driving the drive units 6 of the first suspension members 3A and the second suspension members 3B. is stably performed while detecting the levelness of the scaffolding 1a.

Therefore, according to the present embodiment, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding 1a is stabilized and the work can be carried out satisfactorily.

In addition, in this embodiment, the horizontal state when the scaffolding 1a to be raised and lowered is separated from the other scaffolding 1a (at the time of raising and lowering) by arranging the first hanging member 3A and the second hanging member 3B vertically is simple and securely retained.

<Example 4>
The scaffold lifting mechanism 3 according to the present embodiment is arranged vertically between a predetermined front-rear position at the inner end in the left-right direction of the scaffolding 1a to be raised and lowered and a predetermined position at the inner side in the left-right width direction of the bridge girder portion 51. A pair of functional front and rear first hanging members 3A are inclined between a predetermined front and rear position at the outer end in the left and right width direction of the scaffolding 1a to be raised and lowered and a predetermined front and rear position at the outer end in the left and right width direction of the bridge girder portion 51. A pair of front and rear second suspension members 3B having a lifting function and a weight member 5 provided movably in the left and right direction of the ascending and descending scaffolding 1a.

The first suspension member 3A and the second suspension member 3B, which have a lifting and lowering function and constitute the scaffold lifting mechanism 3, are provided with a drive unit 6 (winding means) as shown in FIGS. electric chain hoist). Incidentally, the hanging member (wire) provided with the electric winch as the driving portion 6 may be used as the hanging member provided with the driving portion 6, and any other hanging member (wire) provided with the characteristics of the present embodiment may be appropriately adopted.

As shown in FIGS. 15 and 16, the weight member 5 is made of an appropriate metal member and slides on a pair of rail portions 8 provided on the lower surface of the scaffolding 1a at the front and rear ends thereof. freely set. In addition, the weight member 5 has a slide fixing portion fixed at an arbitrary position of the rail portion 8 (a position for maintaining the horizontal state of the raised and lowered scaffolding 1a).

The first suspending member 3A and the second suspending member 3B are arranged between the bridge girder portion 51 and the ascending/descending scaffolding 1a, the weight member 5 is fixed at an arbitrary position on the rail portion 8, and the previously placed suspending member is As the member 2 is removed, the connection between the ascending and descending scaffolding 1a and the other scaffolding 1a connected to the scaffolding 1a is released, and in this state, the driving unit 6 of each of the first hanging member 3A and the second hanging member 3B is driven. It is possible to raise and lower the scaffolding 1a by moving it (see FIGS. 17 and 18). In FIGS. 15, 16, 17 and 18, the hanging members shown by chain lines mean the hanging members arranged vertically, and the hanging members shown by the solid lines mean the hanging members arranged in an inclined shape. there is

Therefore, the scaffolding 1a is tilted with only the first hanging member 3A and the second hanging member 3B, but by appropriately setting the position of the weight member 5, when the lifting scaffolding 1a is separated from the other scaffoldings 1a edge) is kept horizontal.

Further, in this embodiment, a horizontal detection unit 7 for detecting the horizontal state of the scaffolding 1a to be raised and lowered, and a control unit (not shown) for controlling the driving of each driving unit 6 based on the detection result of the horizontal detection unit 7 are provided. ing.

This horizontal detection unit 7 is composed of a laser rangefinder provided at a position above the scaffolding 1a which moves up and down at a predetermined position on the lower surface of the bridge girder 51 as shown in FIG. By measuring the distance to the upper surface of the scaffolding 1a, it is detected whether the scaffolding 1a is horizontal or not.

Therefore, in addition to maintaining the horizontal state of the scaffolding 1a by the position of the weight member 5 described above, the horizontal state of the scaffolding 1a is also controlled by the control unit for controlling the driving of each driving unit 6 and the driving of the hanging member by the horizontal detection unit 7. can be held.

Incidentally, the horizontal detector 7 is not limited to the laser rangefinder, and may be various sensors such as a level meter, and any sensor that exhibits the characteristics of the present embodiment can be used as appropriate.

Since this embodiment is configured as described above, the scaffolding 1a is raised and lowered by driving the drive units 6 of the first suspension members 3A and the second suspension members 3B. is stably performed while detecting the levelness of the scaffolding 1a.

Therefore, according to the present embodiment, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding 1a is stabilized and the work can be carried out satisfactorily.

Further, in this embodiment, the weight member 5 is provided so that the horizontal state when the scaffold 1a to be raised and lowered is separated from the other scaffolds 1a (at the time of raising and lowering) is easily and reliably maintained.

The present invention is not limited to Examples 1 to 4, and the specific configuration of each component can be designed as appropriate.

1a scaffolding 3 scaffold lifting mechanism 3A first suspension member 3B second suspension member 3C third suspension member 4 stand 5 weight member 6 drive unit 7 horizontal detection unit

The present invention relates to a suspended scaffolding system .

BACKGROUND ART Conventionally, a suspended scaffolding device (hereinafter referred to as "conventional example") disclosed in Japanese Patent Application Laid-Open No. 2021-67031 has been proposed as a scaffolding provided for repairing or inspecting bridge girders on a bridge.

In this conventional example, a scaffolding 1a, which is arranged below a bridge girder portion 51 of a bridge 50 and has a length in the front-rear longitudinal direction and the left-right width direction of the bridge girder portion 50, protrudes outward from the left and right edges of the bridge girder portion 51. The scaffolds 1a are arranged side by side to form a scaffolding body 1, and each scaffolding 1a constituting the scaffolding body 1 is provided in a suspended state from the bridge girder section 51 via the hanging members 2 that are suspended and connected to the bridge girder section 51. Among the hanging members 2 arranged between the bridge girder portion 51 and the scaffolding 1a, the left-right width direction outer end portion of the lateral scaffolding 1a projecting outward from the bridge girder portion 51 and the left-right width of the bridge girder portion 51 The hanging members 2 arranged between the direction outer ends are provided in an inclined state, and the hanging members 2 arranged between other portions are provided in a vertical state (see FIGS. 1 and 2).

Japanese Patent Application Laid-Open No. 2021-67031

By the way, for example, in the case where the lower part of the scaffolding 1 is a river, there is a demand to raise and lower the scaffolding 1 when passing fishing boats, when the water level rises, and when transporting materials. When attempting to ascend and descend the scaffolding 1a located on the side projecting outward from the left and right edges of the bridge, as described above, the lateral width direction outer end of the lateral scaffolding 1a and the lateral width direction outer end of the bridge girder portion 51 The suspension member 2 arranged between the section and the section is provided in an inclined state, while the other section (between the inner end in the lateral width direction of the scaffolding 1a and the inner part in the lateral width direction of the bridge girder section 51) Since the hanging member 2 is arranged in a vertical state, if the hanging member 2 is raised or lowered in that state to raise or lower the side scaffolding, the balance is poor, and therefore the horizontal state is lost. It was difficult to hold and move up and down stably.

The present inventors have further researched and developed a scaffold that is suspended below the above-mentioned bridge girder, and as a result, have developed an epoch-making suspending scaffolding system that has never existed before.

The gist of the present invention will be described with reference to the accompanying drawings.

It is arranged below the bridge girder portion 51 of the bridge 50 , has length in the front-rear longitudinal direction and the left-right width direction of the bridge girder portion 51, and is arranged side by side in a state of protruding outward from the left and right edges of the bridge girder portion 51. In a scaffolding body 1 which is provided in a suspended state on a bridge girder portion 51 and further configured by detachably connecting a plurality of scaffoldings 1a , the scaffolding body 1 protrudes outward from the left and right edges of the bridge girder portion 51 , and is connected to another scaffolding. A suspended scaffolding system comprising a scaffolding lifting mechanism 3 for lifting and lowering the scaffolding 1a separated from the scaffolding 1a while maintaining a horizontal state, wherein the scaffolding lifting mechanism 3 is positioned at the inner end portion in the lateral width direction of the lifting scaffolding 1a. A first hanging member 3A having a lifting function arranged in a vertical state between a predetermined position and the bridge girder portion 51, and a predetermined position and the bridge girder portion at the outer end in the left and right width direction of the ascending and descending scaffolding 1a. 51 and a second hanging member 3B having a lifting function, and a predetermined position on the inner side of the vertical width direction of the scaffolding 1a to be raised and lowered and the bridge girder portion 51 arranged in an inclined state. A suspended scaffolding system comprising a third suspension member 3C having a function of lifting and lowering, wherein the inclination directions of the second suspension member 3B and the third suspension member 3C are set opposite to each other. It is related to

Further, in the suspended scaffolding system according to claim 1 , the first hanging member 3A is positioned at a predetermined front-rear position at the inner end in the left-right width direction of the ascending and descending scaffold 1a and at a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. In addition, the second hanging member 3B is arranged in a vertical state between the front and rear predetermined positions at the left and right width direction outer end portions of the elevating scaffolding 1a and the front and rear positions at the left and right width direction outer end portions of the bridge girder portion 51. The third hanging member 3C is arranged in an inclined state between the predetermined position and the front and rear predetermined position on the inner side in the lateral width direction of the scaffold 1a to be raised and lowered and the front and rear on the outer end portion in the lateral width direction of the bridge girder portion 51. The present invention relates to a suspended scaffolding system characterized by being arranged in an inclined state between a predetermined position.

In addition, it is arranged below the bridge girder portion 51 of the bridge 50, has a length in the front-rear longitudinal direction and the left-right width direction of the bridge girder portion 51, and is arranged side by side in a state of protruding outward from the left and right edges of the bridge girder portion 51. In the scaffold body 1 which is provided in a suspended state on the bridge girder portion 51 and further configured by detachably connecting a plurality of scaffolds 1a, the scaffold body 1 protrudes outward from the left and right edges of the bridge girder portion 51, and other A suspended scaffolding system comprising a scaffolding lifting mechanism 3 for lifting and lowering the scaffolding 1a separated from the scaffolding 1a while maintaining a horizontal state, wherein the scaffolding lifting mechanism 3 is positioned at the inner end in the left-right width direction of the lifting scaffolding 1a. A first hanging member 3A having a lifting function arranged in a vertical state between a predetermined position in the section and the bridge girder section 51; It is characterized by being composed of a second hanging member 3B having a lifting function arranged in a vertical state between the pedestal portion 4 provided in a projecting state at the outer end portion in the left and right width direction of the bridge girder portion 51. It relates to a suspended scaffolding system.

Further, in the suspended scaffolding system according to claim 3 , the first hanging member 3A is positioned at a predetermined front-rear position at the inner end in the left-right width direction of the scaffold 1a to be raised and lowered and at a predetermined position at the inner side in the left-right width direction of the bridge girder portion 51. The second hanging member 3B is arranged in a vertical state between and between the front and rear predetermined positions at the left and right width direction outer end portions of the elevating scaffold body 1A and the left and right width direction outer end portions of the bridge girder portion 51. The suspended scaffolding system is characterized in that the scaffolding system is arranged in a vertical state between a pedestal portion 4 provided in a projecting state at a predetermined position in the front and rear direction.

In addition, it is arranged below the bridge girder portion 51 of the bridge 50, has a length in the front-rear longitudinal direction and the left-right width direction of the bridge girder portion 51, and is arranged side by side in a state of protruding outward from the left and right edges of the bridge girder portion 51. In the scaffold body 1 which is provided in a suspended state on the bridge girder portion 51 and further configured by detachably connecting a plurality of scaffolds 1a, the scaffold body 1 protrudes outward from the left and right edges of the bridge girder portion 51, and other A suspended scaffolding system comprising a scaffolding lifting mechanism 3 for lifting and lowering the scaffolding 1a separated from the scaffolding 1a while maintaining a horizontal state, wherein the scaffolding lifting mechanism 3 is positioned at the inner end in the left-right width direction of the lifting scaffolding 1a. A first hanging member 3A having a lifting function arranged in a vertical state between a predetermined position in the section and the bridge girder section 51, and a predetermined position and the bridge girder at the outer end in the left and right width direction of the elevating scaffold 1a. A second hanging member 3B having a lifting function arranged in an inclined state between the scaffolding 51 and a weight member 5 provided movably in the horizontal direction of the ascending and descending scaffolding 1a. It relates to a suspended scaffolding system characterized by:

Further, in the suspended scaffolding system according to claim 5 , the first hanging member 3A is positioned at a predetermined front-rear position at the inner end in the left-right width direction of the ascending and descending scaffolding 1a and at a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. In addition, the second hanging member 3B is arranged in a vertical state between the front and rear predetermined positions at the left and right width direction outer end portions of the elevating scaffolding 1a and the front and rear positions at the left and right width direction outer end portions of the bridge girder portion 51. The present invention relates to a suspended scaffolding system characterized in that it is arranged in an inclined state between it and a predetermined position.

Further, in the suspended scaffolding system according to any one of claims 1 to 6 , a suspension member having a drive unit 6 is adopted as the suspension member having the lifting function, and the horizontal state of the lifting scaffold 1a is controlled. A suspended scaffolding system comprising: a horizontal detector 7 for detecting; It is related to

Since the present invention is configured as described above, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding is stable and the work can be carried out satisfactorily. It will be an epoch-making suspended scaffolding system that does not exist.

FIG. 10 is an explanatory diagram of a conventional example; FIG. 11 is a perspective view for explaining a main part according to a conventional example; FIG. 2 is an explanatory diagram of a main part according to Example 1; FIG. 2 is a perspective view showing a main part according to Example 1; FIG. 4 is an operation explanatory diagram of the first embodiment; FIG. 4 is an operation explanatory diagram of the first embodiment; FIG. 3 is an explanatory diagram of a main part according to a configuration example ; It is a perspective view which shows the principal part which concerns on a structural example . FIG. 4 is an operation explanatory diagram of a configuration example ; FIG. 4 is an operation explanatory diagram of a configuration example ; FIG. 11 is an explanatory diagram of a main part according to Example 2 ; FIG. 11 is a perspective view showing a main part according to Example 2 ; FIG. 11 is an operation explanatory diagram of the second embodiment; FIG. 11 is an operation explanatory diagram of the second embodiment; FIG. 11 is an explanatory diagram of a main part according to Example 3 ; FIG. 11 is a perspective view showing a main part according to Example 3 ; FIG. 11 is an operation explanatory diagram of Example 3 ; FIG. 11 is an operation explanatory diagram of Example 3 ;

A preferred embodiment of the present invention will be briefly described with reference to the drawings showing the operation of the present invention.

According to the present invention, the scaffolding 1a having lengths in the front-rear longitudinal direction and the left-right width direction of the bridge girders 51 is arranged below the bridge girders 51 in the bridge 50 .

Specifically, the scaffoldings 1a are juxtaposed so as to protrude outward from the left and right edges of the bridge girder portion 51 to form the scaffolding body 1, and the scaffoldings 1a are connected to each other in a separable manner. It is provided in the bridge girder section 51 in a suspended state via the hanging member 2 which is connected to the section 51 in a suspended manner.

In the present invention, the scaffolding 1a projecting outward from the left and right edges of the bridge girder 51 is separated from the other scaffoldings 1a, and a scaffolding elevating mechanism 3 is provided for lifting and lowering the separated scaffolding 1a while maintaining its horizontal state. .

Therefore, the use of the ascending/descending scaffolding 1a is convenient for, for example, transportation of materials, and moreover, the ascending/descending of the scaffolding 1a is stable, and the work can be carried out satisfactorily.

A specific embodiment of the present invention will be described with reference to the drawings.

This embodiment is arranged below the bridge girder portion 51 of the bridge 50, has lengths in the front-rear longitudinal direction and the left-right width direction of the bridge girder portion 51, and protrudes outward from the left and right edges of the bridge girder portion 51. In the scaffolding body 1, which is arranged in parallel and provided in a suspended state on the bridge girder portion 51 and further configured by detachably connecting a plurality of scaffolds 1a, the scaffolding body 1 protrudes outward from the left and right edges of the bridge girder portion 51. , a suspended scaffolding system equipped with a scaffolding lifting mechanism 3 for lifting and lowering the scaffolding 1a separated from other scaffoldings 1a while maintaining a horizontal state. The bridge pier 51 is composed of a floor slab 51a and a main girder 51 provided under the floor slab 51a and connected to the upper end of the pier 52. As shown in FIG.

In this embodiment, a plurality of scaffolding bodies 1 are arranged side by side in the longitudinal direction of the bridge girder section 51, and adjacent scaffolding bodies 1 (scaffolding 1a) are connected to each other in a separable manner. ing.

Specifically, as shown in FIGS. 1 and 2, the scaffolding 1a is constructed by installing a scaffolding plate on an appropriate rectangular frame made of metal. The scaffolding 1a is not limited to the structure described above.

The hanger 2 is an appropriate metal chain member, as shown in FIGS. .

In FIGS. 1 and 2, the hanging members indicated by the dashed lines mean the hanging members arranged vertically, and the hanging members indicated by the solid lines mean the hanging members arranged in an inclined manner. The sling members 2 arranged in an inclined shape are attached to the bridge girder portion 51 and the left-right width direction outer end portion of the scaffolding 1a at the most side end projecting outward from the left and right edges of the bridge girder portion 51 in the left-right width direction. Since it is arranged between the left and right width direction outer end portions of , it is in an inclined state.

In addition, in this embodiment, the scaffold 1a protruding outward from the left and right edges of the bridge girder portion 51 of the scaffolding body 1 is separated from the other scaffolding 1a, and the separated scaffolding 1a is maintained in a horizontal state to move up and down. A lifting mechanism 3 is provided.

In this embodiment, as the scaffold lifting mechanism 3, the following four structures (first to fourth embodiments) are provided. In this embodiment, as described above, the scaffolding 1a constituting the scaffolding body 1 is suspended from the bridge girder section 51 via the hanging members 2 that are connected to the bridge girder section 51 in a suspended manner. The scaffolding elevating mechanism 3 is provided on the elevating scaffolding 1a when it is necessary to elevate the scaffolding 1a. .

<Example 1>
The scaffold lifting mechanism 3 according to the present embodiment is arranged vertically between a predetermined front-rear position at the inner end in the left-right width direction of the scaffold 1a to be raised and lowered and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. A pair of front and rear first hanging members 3A having a lowering function are inclined between a predetermined front and rear position at the outer end in the left and right width direction of the scaffolding 1a to be raised and lowered and a predetermined position at the outer end in the left and right width direction of the bridge girder portion 51. A pair of front and rear second hanging members 3B having a lifting function and arranged in a state, a front and rear predetermined position on the inner side in the left and right width direction of the scaffold 1a to be raised and lowered, and a front and rear predetermined position on the outer end portion in the left and right width direction of the bridge girder portion 51. The second suspension member 3B and the third suspension member 3C are arranged in an inclined state between the front and rear third suspension members 3C. The member 3B is set in an inclination direction in which the bridge girder portion 51 falls outward, and the third hanging member 3C is set in an inclination direction in which the bridge girder portion 51 falls inward.

The first suspension member 3A, the second suspension member 3B, and the third suspension member 3C, which are equipped with a lifting and lowering function and constitute the scaffold lifting mechanism 3, are driven by a drive unit 6 (winding means) as shown in FIGS. It is a hanging material (electric chain block) with Incidentally, the hanging member (wire) provided with the electric winch as the driving portion 6 may be used as the hanging member provided with the driving portion 6, and any other hanging member (wire) provided with the characteristics of the present embodiment may be appropriately adopted.

The first suspension member 3A, the second suspension member 3B and the third suspension member 3C are arranged between the bridge girder portion 51 and the ascending/descending scaffolding 1a. 1a is disconnected from another scaffolding 1a connected to the scaffolding 1a, and in this state, the drive units 6 of the first hanging member 3A, the second hanging member 3B, and the third hanging member 3C are driven. It becomes possible to raise and lower the scaffolding 1a (see FIGS. 5 and 6). In FIGS. 3, 4, 5, and 6, the hanging members indicated by chain lines mean the hanging members arranged vertically, and the hanging members indicated by solid lines mean the hanging members arranged in an inclined manner. there is

Therefore, the scaffolding 1a tilts with only the first hanging member 3A and the second hanging member 3B, but when the scaffolding 1a to be raised and lowered is separated from the other scaffolds 1a by disposing the third hanging member 3C (when raising and lowering the scaffolding 1a) ) is kept horizontal.

Further, in this embodiment, the horizontal detection unit 7 detects the horizontal state of the scaffolding 1a that moves up and down, and based on the detection result of the horizontal detection unit 7, the driving of each driving unit 6 is controlled so as to maintain the horizontal state of the scaffolding 1a. It has a control unit (not shown) for controlling.

As shown in FIG. 3, the horizontal detection unit 7 is composed of a laser rangefinder provided at a position above the scaffolding 1a that moves up and down at a predetermined position on the lower surface of the bridge girder 51. This horizontal detection unit 7 (laser rangefinder) By measuring the distance to the upper surface of the scaffolding 1a, it is detected whether the scaffolding 1a is horizontal or not.

Therefore, in addition to maintaining the horizontal state of the scaffolding 1a by the method of suspending the hanging members described above, the horizontal state of the scaffolding 1a can also be maintained by driving the hanging members by the control unit for controlling the driving of each driving unit 6 and the horizontal detection unit 7. can be held.

Incidentally, the horizontal detector 7 is not limited to the laser rangefinder, and may be various sensors such as a level meter, and any sensor that exhibits the characteristics of the present embodiment can be used as appropriate.

Since the present embodiment is configured as described above, the scaffolding 1a is raised and lowered by driving the drive units 6 of the first suspension members 3A, the second suspension members 3B and the third suspension members 3C. is stably performed while the horizontality of the scaffolding 1a is being detected by the horizontal detection unit 7.

Therefore, according to the present embodiment, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding 1a is stabilized and the work can be carried out satisfactorily.

In addition, in this embodiment, the horizontal state when the scaffolding 1a to be raised and lowered is separated from the other scaffolds 1a (at the time of raising and lowering) is easily and reliably maintained by arranging the third hanging members 3C.

< Configuration example >
The scaffold lifting mechanism 3 according to this configuration example is arranged vertically between a predetermined front-rear position at the inner end in the left-right width direction of the scaffolding 1a to be raised and lowered and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. A pair of front and rear first hanging members 3A having a lowering function are arranged in a vertical state between a predetermined front and rear position on the inner side in the left and right direction of the scaffolding 1a to be raised and lowered and a predetermined position on the outer side in the left and right width direction of the bridge girder section 51. It is composed of a pair of front and rear second hanging members 3B equipped with a lifting and lowering function.

The first suspension member 3A and the second suspension member 3B having a lifting and lowering function that constitute the scaffold lifting mechanism 3 are suspension members ( electric chain hoist). As the suspension member provided with the drive unit 6, a suspension member (wire) provided with an electric winch as the drive unit 6 may be used as appropriate as long as it exhibits the characteristics of this configuration example .

The first hanging member 3A and the second hanging member 3B are arranged between the bridge girder portion 51 and the ascending/descending scaffolding 1a, and the previously arranged hanging members 2 are removed, and the ascending/descending scaffolding 1a and the scaffolding 1a The scaffolding 1a can be raised and lowered by releasing the connection with the other connected scaffolding 1a and driving the first hanging members 3A and the respective drive units 6 in this state (see FIGS. 9 and 10). . In FIGS. 7, 8, 9 and 10, the hanging members shown by chain lines mean the hanging members arranged vertically, and the hanging members shown by solid lines mean the hanging members arranged in an inclined manner. there is

Therefore, by suspending the scaffolding 1a with the first hanging member 3A and the second hanging member 3B arranged vertically, when the scaffolding 1a to be raised and lowered is separated from the other scaffolds 1a (at the time of raising and lowering), It remains horizontal.

In addition, in this configuration example , the horizontal detection unit 7 detects the horizontal state of the scaffolding 1a that moves up and down, and based on the detection result of the horizontal detection unit 7, the driving of each driving unit 6 is controlled so as to maintain the horizontal state of the scaffolding 1a. It has a control unit (not shown) for controlling.

As shown in FIG. 9, the horizontal detection unit 7 is composed of a laser rangefinder provided above the scaffolding 1a that moves up and down at a predetermined position on the lower surface of the bridge girder 51. This horizontal detection unit 7 (laser rangefinder) By measuring the distance to the upper surface of the scaffolding 1a, it is detected whether the scaffolding 1a is horizontal or not.

Therefore, in addition to maintaining the horizontal state of the scaffolding 1a by the method of suspending the hanging members described above, the horizontal state of the scaffolding 1a can also be maintained by driving the hanging members by the control unit for controlling the driving of each driving unit 6 and the horizontal detection unit 7. can be held.

The horizontal detection unit 7 is not limited to the laser rangefinder, and may be various sensors such as a level meter, and any sensor that exhibits the characteristics of this configuration example can be used as appropriate.

Since this configuration example is configured as described above, the scaffolding 1a is moved up and down by driving the drive units 6 of the first suspension member 3A and the second suspension member 3B. is stably performed while detecting the levelness of the scaffolding 1a.

Therefore, according to this configuration example , the use of the ascending/descending scaffolding 1a is convenient for, for example, transportation of materials, and moreover, the ascending/descending of the scaffolding 1a is stable, and the work can be carried out satisfactorily.

In addition, in this configuration example , the horizontal state when the scaffolding 1a that ascends and descends is separated from the other scaffolding 1a (when ascending and descending) is simple and securely retained.

< Example 2 >
The scaffold lifting mechanism 3 according to the present embodiment is arranged vertically between a predetermined front-rear position at the inner end in the left-right width direction of the scaffold 1a to be raised and lowered and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. A pair of front and rear first hanging members 3A having a lowering function, and a front and rear pair provided in a protruding state at predetermined positions in the lateral width direction outside ends of the scaffold body 1A to be raised and lowered and in the lateral width direction outside ends of the bridge girder portion 51. It is composed of a pair of front and rear second hanging members 3B having a lifting and hanging function to be hung in a vertical state between the pedestal part 4 and the second hanging member 3B.

The first suspension member 3A and the second suspension member 3B, which have a lifting and lowering function and constitute the scaffold lifting mechanism 3, are suspension members ( electric chain hoist). Incidentally, the hanging member (wire) provided with the electric winch as the driving portion 6 may be used as the hanging member provided with the driving portion 6, and any other hanging member (wire) provided with the characteristics of the present embodiment may be appropriately adopted.

As shown in FIGS. 11 and 12, the pedestal 4 is formed of a suitable metal member, and has a connecting portion 4a that is detachably connected to the outer end portion of the bridge beam portion 51 in the left-right width direction. and a suspending portion 4b which protrudes from the connecting portion 4a and connects the upper end portion of the second suspending member 3B by suspending.

The first hanging member 3A and the second hanging member 3B are arranged between the bridge girder portion 51 and the ascending/descending scaffolding 1a, and the previously arranged hanging members 2 are removed, and the ascending/descending scaffolding 1a and the scaffolding 1a By releasing the connection with the other connected scaffolding 1a and driving the first hanging members 3A and the respective drive units 6 in this state, the scaffolding 1a can be raised and lowered (see FIGS. 13 and 14). . In FIGS. 11, 12, 13 and 14, hanging members indicated by chain lines are arranged vertically, and hanging members shown by solid lines are arranged inclined.

Therefore, by suspending the scaffolding 1a with the first hanging member 3A and the second hanging member 3B arranged vertically, when the scaffolding 1a to be raised and lowered is separated from the other scaffolds 1a (at the time of raising and lowering), It remains horizontal.

Further, in this embodiment, the horizontal detection unit 7 detects the horizontal state of the scaffolding 1a that moves up and down, and based on the detection result of the horizontal detection unit 7, the driving of each driving unit 6 is controlled so as to maintain the horizontal state of the scaffolding 1a. It has a control unit (not shown) for controlling.

The horizontal detection unit 7 is composed of a laser rangefinder provided above the scaffolding 1a which moves up and down at a predetermined position on the lower surface of the bridge girder 51 as shown in FIG. By measuring the distance to the upper surface of the scaffolding 1a, it is detected whether the scaffolding 1a is horizontal or not.

Therefore, in addition to maintaining the horizontal state of the scaffolding 1a by the method of suspending the hanging members described above, the horizontal state of the scaffolding 1a can also be maintained by driving the hanging members by the control unit for controlling the driving of each driving unit 6 and the horizontal detection unit 7. can be held.

Incidentally, the horizontal detector 7 is not limited to the laser rangefinder, and may be various sensors such as a level meter, and any sensor that exhibits the characteristics of the present embodiment can be used as appropriate.

Since this embodiment is configured as described above, the scaffolding 1a is raised and lowered by driving the drive units 6 of the first suspension members 3A and the second suspension members 3B. is stably performed while detecting the levelness of the scaffolding 1a.

Therefore, according to the present embodiment, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding 1a is stabilized and the work can be carried out satisfactorily.

In addition, in this embodiment, the horizontal state when the scaffolding 1a to be raised and lowered is separated from the other scaffolding 1a (at the time of raising and lowering) by arranging the first hanging member 3A and the second hanging member 3B vertically is simple and securely retained.

< Example 3 >
The scaffold lifting mechanism 3 according to the present embodiment is arranged vertically between a predetermined front-rear position at the inner end in the left-right width direction of the scaffold 1a to be raised and lowered and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder portion 51. A pair of front and rear first hanging members 3A having a lowering function are inclined between a predetermined front and rear position at the outer end in the left and right width direction of the scaffolding 1a to be raised and lowered and a predetermined position at the outer end in the left and right width direction of the bridge girder portion 51. It is composed of a pair of front and rear second hanging members 3B having a function of lifting and lowering, and a weight member 5 provided movably in the horizontal direction of the elevated scaffold 1a.

The first suspension member 3A and the second suspension member 3B, which have a lifting and lowering function and constitute the scaffold lifting mechanism 3, are provided with a drive unit 6 (winding means) as shown in FIGS. electric chain hoist). Incidentally, the hanging member (wire) provided with the electric winch as the driving portion 6 may be used as the hanging member provided with the driving portion 6, and any other hanging member (wire) provided with the characteristics of the present embodiment may be appropriately adopted.

As shown in FIGS. 15 and 16, the weight member 5 is made of an appropriate metal member and slides on a pair of rail portions 8 provided on the lower surface of the scaffolding 1a at the front and rear ends thereof. freely set. In addition, the weight member 5 has a slide fixing portion fixed at an arbitrary position of the rail portion 8 (a position for maintaining the horizontal state of the raised and lowered scaffolding 1a).

The first suspending member 3A and the second suspending member 3B are arranged between the bridge girder portion 51 and the ascending/descending scaffolding 1a, the weight member 5 is fixed at an arbitrary position on the rail portion 8, and the previously placed suspending member is As the member 2 is removed, the connection between the ascending and descending scaffolding 1a and the other scaffolding 1a connected to the scaffolding 1a is released, and in this state, the driving unit 6 of each of the first hanging member 3A and the second hanging member 3B is driven. It is possible to raise and lower the scaffolding 1a by moving it (see FIGS. 17 and 18). In FIGS. 15, 16, 17 and 18, the hanging members shown by chain lines mean the hanging members arranged vertically, and the hanging members shown by the solid lines mean the hanging members arranged in an inclined shape. there is

Therefore, the scaffolding 1a is tilted with only the first hanging member 3A and the second hanging member 3B, but by appropriately setting the position of the weight member 5, when the lifting scaffolding 1a is separated from the other scaffoldings 1a edge) is kept horizontal.

Further, in this embodiment, a horizontal detection unit 7 for detecting the horizontal state of the scaffolding 1a to be raised and lowered, and a control unit (not shown) for controlling the driving of each driving unit 6 based on the detection result of the horizontal detection unit 7 are provided. ing.

This horizontal detection unit 7 is composed of a laser rangefinder provided at a position above the scaffolding 1a which moves up and down at a predetermined position on the lower surface of the bridge girder 51 as shown in FIG. By measuring the distance to the upper surface of the scaffolding 1a, it is detected whether the scaffolding 1a is horizontal or not.

Therefore, in addition to maintaining the horizontal state of the scaffolding 1a by the position of the weight member 5 described above, the horizontal state of the scaffolding 1a is also controlled by the control unit for controlling the driving of each driving unit 6 and the driving of the hanging member by the horizontal detection unit 7. can be held.

Incidentally, the horizontal detector 7 is not limited to the laser rangefinder, and may be various sensors such as a level meter, and any sensor that exhibits the characteristics of the present embodiment can be used as appropriate.

Since this embodiment is configured as described above, the scaffolding 1a is raised and lowered by driving the drive units 6 of the first suspension members 3A and the second suspension members 3B. is stably performed while detecting the levelness of the scaffolding 1a.

Therefore, according to the present embodiment, the use of the ascending and descending scaffolding 1a is convenient for, for example, transporting materials, and moreover, the ascending and descending of the scaffolding 1a is stabilized and the work can be carried out satisfactorily.

Further, in this embodiment, the weight member 5 is provided so that the horizontal state when the scaffold 1a to be raised and lowered is separated from the other scaffolds 1a (at the time of raising and lowering) is easily and reliably maintained.

The present invention is not limited to Examples 1 to 3 , and the specific configuration of each component can be designed as appropriate.

1 scaffold body 1a scaffold
1A scaffold body
3 Scaffold Lifting Mechanism 3A First Suspension Material 3B Second Suspension Material 3C Third Suspension Material 4 Stand 5 Weight Member 6 Drive Section 7 Horizontal Detection Section
50 bridges
51 bridge girder

Claims (10)

Scaffolds arranged below a bridge girder part of a bridge and having lengths in the front-rear longitudinal direction and the left-right width direction of the bridge girder part are arranged side by side on the bridge girder part in a state of protruding outward from the left and right edges of the bridge girder part. In the suspended scaffolding device provided in a suspended state, the scaffolds are detachably connected to each other, project outward from the left and right edges of the bridge girder portion, and hold the scaffold separated from other scaffolds in a horizontal state. A suspended scaffolding device characterized by having a scaffolding lifting mechanism that moves up and down by means of a scaffolding. The suspended scaffolding device according to claim 1, wherein the scaffolding elevating mechanism has a function of lifting and lowering the scaffolding vertically arranged between a predetermined position at the inner end in the lateral width direction of the ascending/descending scaffold and the bridge girder. a first suspension member, a second suspension member having a lifting function disposed in an inclined state between a predetermined position on the outer edge in the left-right width direction of the scaffold to be raised and lowered and the bridge girder, and the scaffold to be raised and lowered. and a third suspension member with a lifting function arranged in an inclined state between a predetermined position on the inner side in the left and right width direction of the bridge girder portion, and the second suspension member and the third suspension member A suspended scaffolding device characterized in that inclination directions are set in opposite directions. 3. The suspended scaffolding device according to claim 2, wherein the first hanging member is vertically positioned between a predetermined front-rear position at the inner end in the left-right width direction of the elevated scaffold and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder. The second hanging member is arranged in a state of being inclined between a predetermined front-rear position at the outer end in the left-right width direction of the scaffolding to be raised and lowered and a predetermined position at the outer end in the left-right width direction of the bridge girder. The third hanging member is arranged in an inclined state between a predetermined front-rear position on the inner side in the left-right width direction of the scaffold to be raised and lowered and a predetermined front-rear position on the outer end portion in the left-right width direction of the bridge girder portion. A suspended scaffolding device characterized by being 2. The scaffold lifting device according to claim 1, wherein the scaffold lifting mechanism has a function of lifting and lowering the scaffold vertically arranged between a predetermined position at the inner end in the lateral width direction of the ascending and descending scaffold and the bridge girder. The scaffolding is composed of a first suspension member and a second suspension member having a lifting and lowering function arranged in a vertical state between a predetermined position on the inner side in the left-right direction of the scaffold to be raised and lowered and the bridge girder. Suspended scaffolding equipment. 5. The suspended scaffolding device according to claim 4, wherein the first hanging member is vertically positioned between a predetermined front-rear position at the inner end in the left-right width direction of the elevated scaffold and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder. The second hanging member is arranged in a vertical state between a predetermined front-rear position on the inner side in the left-right direction of the scaffold to be raised and lowered and a predetermined position in the front-rear direction on the outer end in the left-right width direction of the bridge girder. A suspended scaffolding device characterized by: 2. The scaffold lifting device according to claim 1, wherein the scaffold lifting mechanism has a function of lifting and lowering the scaffold vertically arranged between a predetermined position at the inner end in the lateral width direction of the ascending and descending scaffold and the bridge girder. Suspended in a vertical state between the first hanging member, a predetermined position at the outer end in the lateral width direction of the ascending and descending scaffolding, and a pedestal provided in a projecting state at the outer end in the lateral width direction of the bridge girder. A suspended scaffolding device characterized by comprising a second suspension member having a lifting/lowering function. 7. The suspended scaffolding device according to claim 6, wherein the first hanging member is arranged vertically between a predetermined front-rear position at the inner end in the left-right width direction of the scaffold to be raised and lowered and a predetermined front-rear position at the inner side in the left-right width direction of the bridge girder. The second hanging member is provided in a protruding state at a predetermined front-rear position at the outer end in the left-right width direction of the elevating scaffold and at a predetermined position at the outer end in the left-right width direction of the bridge girder. A suspended scaffolding device characterized in that it is suspended vertically between a pedestal and a pedestal. 2. The suspended scaffolding device according to claim 1, wherein the scaffolding elevating mechanism has a function of lifting and lowering the scaffolding vertically arranged between a predetermined position on the left-right direction inner end of the ascending and descending scaffold and the bridge girder. a second suspension member provided with a lifting/lowering function arranged in an inclined state between a predetermined position on the outer edge in the left-right width direction of the scaffolding to be raised and lowered and the bridge girder, and the scaffold to be raised and lowered A suspended scaffolding device characterized by comprising a weight member provided so as to be movable in the left-right direction. 9. The suspended scaffolding device according to claim 8, wherein the first hanging member is vertically positioned between a predetermined front-rear position at the left-right direction inner end of the scaffold to be raised and lowered and a front-rear predetermined position at the left-right width direction inner side of the bridge girder. The second hanging member is arranged in an inclined state between a predetermined front-rear position at the outer end in the left-right width direction of the scaffolding to be lifted and a predetermined position at the outer end in the left-right width direction of the bridge girder. A suspended scaffolding device characterized by being arranged. The suspended scaffolding device according to any one of claims 1 to 9, wherein a suspension member provided with a drive unit is adopted as the suspension member having the lifting function, and horizontal detection detects the horizontal state of the ascending and descending scaffolding. and a control unit for controlling the drive of the drive unit so as to maintain the horizontal state of the scaffold based on the detection result of the horizontal detection unit.

Images