JPH0768479A - Elevating floor equipment for maintenance work - Google Patents

Abstract

PURPOSE:To facilitate the securement of the working space of necessary height by lowering each elevating floor. CONSTITUTION:In realizing the maintenance work, the level is set by the action of the respective level setting means 21, 22, 23 as shown in the figure from the chain line position to the solid line position, e.g. the level setting of the first low level mode L1 for a first elevating floor 11, the level setting of the second low level mode L2 for a second elevating floor 12, and the level setting of the third low level mode L3 for a third elevating floor 13. In this third low level mode L3, the third elevating floor 13 is set to the height where the workability to realize the maintenance work of a subject to be maintained becomes excellent as the maintenance floor. When maintenance equipment and materials are brought inside a pit 4, i.e., in the working space, the descending to the third low level mode L3 is realized by working the third level setting means 23 in the condition where the maintenance equipment and materials are mounted on the third elevating floor 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator floor device for maintenance work.

[0002]

[Prior Art] The height from the maintenance floor to the maintenance target is
When the maintenance worker engaged in the maintenance work exceeds the upper back of the maintenance worker, the scaffolding having a height suitable for the maintenance work is assembled to improve the maintenance workability.

[0003]

On the other hand, when the vertical distance between the maintenance floor surface and the object to be maintained is small, if the height level of the maintenance floor surface remains as it is, the posture of the maintenance worker may change. It is easy to be unnatural, and for example, it is inevitable to take a lying position on the back or a sitting position.

As a technique for partially lowering the height of the maintenance floor, a work floor with a recessed part is installed, and an elevating floor for lowering a part of the floor is installed. It is possible to do it.

[0005]

However, all of these techniques have problems in terms of safety and workability.
When the former concave work floor is installed, it must be closed by covering it with an appropriate lid except when performing maintenance work, otherwise the concave work floor will become a pit and the lid strength will be taken into consideration. Then, due to the increased weight, opening and closing operability is likely to be impaired.
In the case of arranging the latter lifting floor, it is necessary to consider the relationship between the floor descent amount and the depth at which maintenance personnel can enter and leave,
In some cases, the height of the maintenance floor cannot be adjusted to the purpose of maintenance work.

The present invention has been made in view of these problems, and it is easy to secure a working space during maintenance work, to improve access to a lowered maintenance floor surface, and when not in use. The purpose is to return the floor to a flat state.

[0007]

[Means for Solving the Problems] In a lift floor used when performing maintenance work on the bottom surface of an object to be serviced, a reference height mode in which the reference floor surface and the height level are combined, and a lower height is set. A first lifting floor having a first level setting means for selectively switching between the first lowering mode and the reference height mode and the first lowering mode which are arranged adjacent to the first lifting floor. A second lifting / lowering apparatus for work is provided with a second lifting / lowering floor having second level setting means for selectively switching between the second lower level mode set lower.

[0008]

When carrying out maintenance work, the first level setting means is operated to set the first elevating floor to the first low-level mode, and the second level setting means is operated to perform the second operation.
Set the raised and lowered floors to the second lower mode. With this setting, the surrounding standard floor surface and each of the raised and lowered floors form a staircase to improve the entrance and exit of maintenance personnel, and the maintenance work is performed on the maintenance floor surface in the low mode. When the maintenance work is not performed, the height of each raised / lowered floor is set to the reference height mode by each level setting means and is adjusted to the height level of the surrounding reference floor surface to flatten the entire floor.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a lifting / lowering floor device for maintenance work according to the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 is an object to be maintained, 2 is a reference floor surface, 3 is a wheel stopper, 4 is a pit (work space), 10 is a lifting floor device for maintenance work, 11 is a first lifting floor, and 12 is a second floor. Floor, 13 is the third floor (maintenance floor), 21 is the first
Level setting means, 22 is second level setting means, 23
Is a third level setting means.

In the example shown in FIG. 1, the object to be maintained 1 is, for example, an aircraft, and is placed in the pit 4 while its movement is suppressed by a retractable wheel stopper 3 placed on the reference floor 2. The maintenance is performed by using the raised and lowered floor device 10 for maintenance work.

The lifting floor device 10 for maintenance work includes a first lifting floor 1 which is horizontally divided into a plurality of adjacent floors.
First, second elevating floor 12 and third elevating floor 13 are arranged, and each elevating floor 11, 12, 13 has a first level setting for setting each of them in a desired height mode. Means 21, second level setting means 22 and third level setting means 23 are arranged.

Each lifting floor 11, 12, 13 has a reference height mode L ₀ , a first low level mode L ₁ , and a second low level mode L.
_{In the 2nd} and 3rd low-order modes L ₃ , the thickness in consideration of weight support etc. when passing the maintenance target 1 while maintaining a close contact state in the horizontal left-right front-back direction so as not to create a gap Set to dimensions.

Then, each level setting means 21, 22, 2
3 is set to the reference height mode L ₀ , the first low-level mode L ₁ , the second low-level mode L ₂ and the third low-level mode L ₃ by operating the respective lifting floors 11, 12, 13 up and down. The third level setting means 2 has a matching function.
3 will be described as a representative, an actuator 23a such as a hydraulic cylinder arranged inside the pit 4 and a plurality of links 23b rocked by the actuator 23a.
And a slide portion 23c arranged at a joint or the like between the link 23b and the third lifting floor 13 are applied.

Lifting floor device 1 for maintenance work having such a configuration
The setting of each mode by 0 will be described below.

At the time of carrying out maintenance work, each level setting means 2
As a result of the operations of 1, 22, and 23, as shown in FIG. 4 from the chain line position to the solid line position, for example, in the first lift floor 11, the first low-level mode L ₁ and the second lift floor 12 Is the second low-level mode L ₂ and the third is for the third floor 13
The height level is set according to the low-order mode L ₃ of. The third lower mode L ₃ in this case is the third
The height is set according to the height at which workability is good when the maintenance work of the maintenance target object 1 is performed with the lifting floor 13 of FIG.

When the maintenance equipment is brought into the pit 4, that is, in the working space, the third level setting means 23 is operated while the maintenance equipment is mounted on the third lifting floor 13. The descent to the third lower mode L ₃ is performed.

When these height levels are set, the heights of the reference floor surface 2 and the lift floors 11, 12, and 13 are set to the reference height mode L ₀ , the first low-order mode L ₁ , and the second height mode, respectively.
The lower level mode L ₂ and the third lower level mode L ₃ are lowered in a stepwise manner, so that the maintenance staff can get in and out of the pit 4 according to a procedure of going up and down the stairs. Note that normal maintenance work will be performed by the third lifting floor 13.

On the other hand, at the end of maintenance work or the like, in order to return the lifting floors 11, 12, 13 to the height level of the reference floor surface 2, the level setting means 21, 22, 23 are operated in the opposite direction. , The floors 11, 12 and 13 are respectively raised to the reference height mode L ₀ shown in FIG. In this reference height mode L ₀ , as shown in FIG. 2, the reference floor surface 2 and each of the lift floors 11, 12, 13 are
However, they are all at the same height level and the entire floor is flattened.

[Other Embodiments] In the present invention, the following technique can be adopted instead of one embodiment. a) Set each lifting floor 11, 12, and 13 to an arbitrary plurality. b) Each level setting means 21, 22, 23 has a structure other than that shown in FIG.
Use a structure that directly raises and lowers 2, 13, a rack and pinion mechanism that is driven by a motor, and a structure that raises and lowers by a ball screw. c) The height level of the reference floor surface 2 is higher than that of each lifting floor 11, 1
When it is not necessary to raise 2 and 13, etc., manage and set the stop position at the time of ascent using a limit switch. d) Adding fine adjustment means for the lowered position to each level setting means 21, 22, 23. e) Control the up / down switching operation by a computer or the like.

[0020]

EFFECTS OF THE INVENTION According to the raising / lowering floor device for maintenance work of the present invention, the following excellent effects are obtained. (1) A first lift floor having a first level setting means for selectively switching between the reference height mode of the reference floor surface and the first low-level mode, and a reference arranged next to the first lift floor. By providing a second lifting floor having second level setting means for selectively switching between the height mode and the second low level mode set lower than the first low level mode,
At the time of maintenance work, it is possible to easily secure a work space of a required height by lowering each lifting floor. (2) When descending, each elevating floor can be made into a staircase shape to improve the accessibility of maintenance workers. (3) When not in use, each raised / lowered floor can be returned to a flat state matching the reference floor surface.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a lifting floor device for maintenance work according to the present invention.

FIG. 2 is a perspective view showing a state in which each lifting floor of the lifting work floor device for maintenance work in FIG. 1 is flattened.

FIG. 3 is a perspective view showing a state in which each of the lifting floors of the lifting floor device for maintenance work of FIG.

FIG. 4 is a front cross-sectional view showing an embodiment of a lifting work floor device for maintenance work according to the present invention.

[Explanation of symbols]

 1 Maintenance Target 2 Reference Floor 3 Wheel Stopper 4 Pit (Work Space) 10 Lifting Floor Device for Maintenance Work 11 First Lifting Floor 12 Second Lifting Floor 13 Third Lifting Floor (Maintenance Floor) 21 1st Level setting means 22 second level setting means 23 third level setting means 23a actuator 23b link 23c slide portion

Claims (1)

[Claims] 1. A lifting floor used when performing maintenance work, etc. on the bottom of an object to be serviced, which is a reference height mode in which the height level is matched with the reference floor surface, and a reference height mode lower than this. A first elevating floor having a first level setting means for selectively switching between the first lower level mode and a lower level mode than the reference height mode and the first lower level mode arranged adjacent to the first elevating floor And a second lifting / lowering floor having second level setting means for selectively switching between the second lower level mode and the second lifting / lowering mode.