WO2022259634A1

WO2022259634A1 - Protective cover

Info

Publication number: WO2022259634A1
Application number: PCT/JP2022/007171
Authority: WO
Inventors: 優太福原
Original assignee: 三菱電機ビルソリューションズ株式会社
Priority date: 2021-06-10
Filing date: 2022-02-22
Publication date: 2022-12-15
Also published as: KR20240019090A; KR102719845B1; JP7500503B2; CN117460684A; JP2022188892A

Abstract

The purpose of the present invention is to reduce the time required to work on the upper pulley of a speed governing mechanism. This protective cover is fixed on the floor of a machine room so that the upper pulley of the speed governing mechanism is accommodated in a protective space. A first opening is provided in the side wall plate of a cover body, and the first opening can be closed by an inspection door. This allows work to be performed on the upper pulley through the first opening during work on the upper pulley. Thus, the time required to work on the upper pulley of the speed governing mechanism can be reduced.

Description

protective cover

The present disclosure relates to a protective cover for the upper pulley of the speed governing mechanism.

Conventionally, shields were provided on the main pulley of the governor of the elevator to prevent small animals such as rats from getting caught in the main pulley (see Patent Document 1, for example).

Japanese Utility Model Laid-Open No. 63-1866

With the conventional shield, there was a problem that it was necessary to remove the shield during work such as inspection of the main body pulley of the speed governor, which took time.

The present disclosure has been made to solve the above problems, and aims to obtain a protective cover capable of shortening the work time for the upper pulley of the speed governing mechanism.

A protective cover according to the present disclosure includes a cover body, an inspection door, and a fixing member for fixing the cover body to a machine room of an elevator. and a side wall plate disposed thereon, the top plate and the side wall plate forming a protective space surrounded by the top plate and the side wall plate, the side wall plate being provided with a first opening for inspection. The door is arranged on the cover body so as to be able to open and close the first opening. are placed.

According to the protective cover according to the present disclosure, when working on the upper pulley of the speed governing mechanism, it is possible to move the inspection door to open the first opening and work on the upper pulley of the speed governing mechanism. Time can be shortened.

1 is a schematic diagram showing a main part of an elevator in which a protective cover according to Embodiment 1 is installed; FIG. FIG. 2 is a perspective view showing the protective cover of FIG. 1; 3 is a perspective view of the protective cover of FIG. 2 with the first opening opened and the top plate removed; FIG. FIG. 3 is an enlarged view showing a portion A of the protective cover of FIG. 2; FIG. 10 is a perspective view showing a protective cover according to Modification 1 of Embodiment 1;

Embodiments of the present disclosure will be described below with reference to the drawings.
Embodiment 1.
FIG. 1 is a schematic diagram showing essential parts of an elevator 100 in which a protective cover 1 according to Embodiment 1 is installed. The elevator 100 includes a hoistway 101 that is a space extending in the vertical direction, a car 102 that moves in the hoistway 101, a balance weight (not shown), a main rope 103 that supports the car 102 and the balance weight, and the main rope 103. , a speed control mechanism 105, and a machine room 120 located in the upper part of the hoistway 101 and in which the mechanisms such as the drive mechanism 104 are arranged.

The speed control mechanism 105 includes a speed control mechanism portion 105a supported by the car 102, a control rope 105b, an upper pulley 105c around which the control rope 105b is wound, and a control rope 105b (not shown). and a lower pulley. The speed governing mechanism 105 a can control the movement of the car 102 based on the relative speed between the speed governing rope 105 b and the car 102 .

The upper pulley 105c is installed on the floor surface 120a of the machine room 120. The upper pulley 105c is covered with the protective cover 1. As shown in FIG.

2 is a perspective view showing the protective cover 1 of FIG. 1. FIG. In FIG. 2, the window member 25 is hatched. FIG. 3 is a perspective view of the protective cover 1 of FIG. 2 with the first opening 13 opened and the top plate 11 removed. In FIG. 3, the window member 25 is not hatched.

The protective cover 1 includes a cover body 10, an inspection door 20, and a plurality of fixing members 30. The cover body 10 has a top plate 11 , side wall plates 12 arranged along the outer peripheral portion of the top plate 11 , and a window member 25 .

The top plate 11 is a rectangular plate-like member. The side wall plate 12 has a front plate 12a, a rear plate 12b, a first side plate 12c, and a second side plate 12d. The top plate 11 is arranged on the side wall plate 12 so that each of the four sides of the top plate 11 and each of the four plate-like members of the side wall plate 12 correspond to each other. The cover body 10 has a rectangular parallelepiped shape with a top plate 11 and side wall plates 12 .

Let the normal direction of the top plate 11 be the height direction of the cover body 10 . The direction orthogonal to the height direction of the cover body 10 is defined as the width direction of the cover body 10 . A direction orthogonal to both the height direction and the width direction of the cover body 10 is defined as the depth direction of the cover body 10 .

The front plate 12a and the rear plate 12b are arranged such that the plane of the front plate 12a and the plane of the rear plate 12b are parallel to the plane including the height direction and the width direction of the cover body 10. there is

The first side plate 12c and the second side plate 12d are arranged so that the plane of the first side plate 12c and the plane of the second side plate 12d are parallel to the plane including the height direction and the depth direction of the cover body 10, respectively. are placed.

The top plate 11 is detachable from the side wall plate 12 . The top plate 11 and the side wall plates 12 form a protective space 10 a surrounded by the top plate 11 and the side wall plates 12 .

Only the top plate 11 is arranged on the surface of the cover main body 10 facing the floor surface 120a, and a member such as a bottom plate is not installed. That is, the bottom surface of the cover body 10 facing the floor surface 120a is open.

A first opening 13 is formed in the front plate 12a. A second opening 14 is formed in the first side plate 12c.

An inspection door 20 is installed on the front plate 12a in which the first opening 13 is formed. The inspection door 20 is arranged on the cover body 10 so as to be able to open and close the first opening 13 .

The inspection door 20 includes a pair of door portions 21 capable of opening and closing the first opening 13, and two lock mechanisms 22 capable of maintaining the state in which the pair of door portions 21 close the first opening 13. have.

Each door portion 21 is rotatably supported by the front plate 12a. Each door portion 21 is rotatably supported around an axis along the height direction. The pair of door portions 21 can open and close the first opening 13 by rotating each of the pair of door portions 21 with respect to the front plate 12a.

Each of the two lock mechanisms 22 is arranged over the pair of door portions 21 . For each lock mechanism 22, any well-known mechanism can be appropriately employed as long as it is a mechanism capable of maintaining the state in which the pair of door portions 21 closes the first opening 13. As shown in FIG.

The number of lock mechanisms 22 can be appropriately selected based on the size of each door portion 21. Each of the two lock mechanisms 22 is arranged over the pair of door portions 21, but may be arranged anywhere as long as the state in which the pair of door portions 21 close the first opening 13 can be maintained. For example, each lock mechanism 22 may be arranged on the front plate 12a.

The second opening 14 is closed with a window member 25 . The window member 25 is arranged on the first side plate 12 c so as to close the second opening 14 . The window member 25 is made of a material that allows the protected space 10a to be seen from the outside of the cover body 10 through the window member 25 .

In Embodiment 1, the window member 25 is composed of an optically transparent member. The window member 25 is made of a material such as glass, plastic, or acrylic, for example. A worker can inspect the protective space 10 a through the window member 25 .

A plurality of fixing members 30 are members for fixing the cover body 10 to the machine room 120 of the elevator 100 . FIG. 4 is an enlarged view showing part A of the protective cover 1 of FIG. Each fixing member 30 has a first plate portion 30a and a second plate portion 30b. The first plate portion 30a and the second plate portion 30b are orthogonal to each other.

The first plate portion 30a is connected to the first side plate 12c. With the first plate portion 30a connected to the first side plate 12c, the second plate portion 30b is arranged to face the floor surface 120a. Therefore, the fixing member 30 is arranged to face the floor surface 120a. A second plate portion hole 30c is provided in the second plate portion 30b facing the floor surface 120a.

A conventionally known method can be used for connecting the first plate portion 30a to the first side plate 12c. For example, through-holes may be formed in the first plate portion 30a and the first side plate 12c, and bolts and nuts may be used for tightening connection.

Alternatively, the through hole formed in the first side plate 12c may be used as a screw hole, and a bolt may be inserted into the through hole of the first plate portion 30a and tightened into the screw hole of the first side plate 12c. Furthermore, the first plate portion 30a and the first side plate 12c may be connected by welding.

Return to Figure 3 and continue the explanation. The protective cover 1 further includes a lighting device 40 and a power supply device 50 .

The lighting device 40 has a lighting fixture 40a that illuminates the protected space 10a and a switch 40b that can turn on and off the lighting fixture 40a. The luminaire 40a is provided on the surface of the side wall plate 12 facing the protective space 10a. A well-known lighting device such as an LED can be used for the lighting device 40a.

The switch 40b is provided on the surface of the cover body 10 opposite to the surface facing the protective space 10a. That is, the switch 40 b is provided on the side wall plate 12 so as to be exposed to the outside of the cover body 10 . The switch 40b is installed on the first side plate 12c in which the second opening 14 is provided.

The power supply device 50 is a device that supplies power to the lighting device 40 . The power supply device 50 has a battery (not shown) and can supply power to the lighting device 40 .

By operating the switch 40b, it is possible to select between a state in which the power supplied to the lighting device 40 is supplied to the lighting fixture 40a and a state in which the power is not supplied to the lighting fixture 40a. When electric power is supplied to the lighting fixture 40a, the lighting fixture 40a is lit.

When power is not supplied to the lighting fixture 40a, the lighting fixture 40a is turned off. That is, by operating the switch 40b, it is possible to select between a state in which the power supplied from the power supply device 50 is supplied to the lighting fixture 40a and a state in which the power supply is cut off.

Next, a method for installing the protective cover 1 will be explained. An upper pulley 105c of the speed control mechanism 105 is installed on the floor surface 120a of the machine room 120 of the elevator 100. As shown in FIG. The protective cover 1 is installed on the floor surface 120a so that the upper pulley 105c is accommodated in the protective space 10a of the protective cover 1. - 特許庁

A plurality of screw members (not shown) are arranged on the floor surface 120a. Each screw member is arranged to protrude vertically upward from the floor surface 120a. The operator arranges the protective cover 1 so that the screw members are inserted into the respective second plate holes 30c.

A nut (not shown) is screwed into each threaded portion inserted into each of the second plate portion holes 30c. Thereby, the second plate portion 30b is sandwiched, and the protective cover 1 is fixed on the floor surface 120a.

It should be noted that the plurality of screw portions are installed at positions corresponding to the respective holes previously formed in the plurality of second plate portions 30b.

When the protective cover 1 is placed on the floor surface 120a, the gap between the lower end of the cover body 10 facing the floor surface 120a and the floor surface 120a is preferably 5 mm or less. More preferably, the gap between the lower end of the cover body 10 facing the floor surface 120a and the floor surface 120a is 1 mm or less. Furthermore, it is desirable that there is no gap between the lower end portion of the cover body 10 facing the floor surface 120a and the floor surface 120a.

According to the protective cover 1 according to Embodiment 1, the side wall plate 12 is provided with the first opening 13, and the inspection door 20 is arranged on the cover main body 10 so that the first opening 13 can be opened and closed. Therefore, the operator can move the inspection door 20 and work on the upper pulley 105c through the first opening 13. FIG. As a result, the work time for the upper pulley 105c of the speed control mechanism 105 can be shortened. Work on the speed governing mechanism 105 includes maintenance work such as lubricating oil supply and work such as a trip test of the speed governing mechanism 105 .

According to the protective cover 1 according to Embodiment 1, the top plate 11 and the side wall plates 12 form the protective space 10a surrounded by the top plate 11 and the side wall plates 12 . Further, the cover body 10 is arranged on the floor surface 120a of the machine room 120 so that the upper pulley 105c of the speed control mechanism 105 installed on the floor surface 120a is arranged in the protective space 10a. Accordingly, the protective cover 1 covers the upper pulley 105c. This can prevent adhesion of dust to the upper pulley 105c and contact of small animals. Also, the protective cover 1 can be installed on the existing elevator 100 . This allows the need for a protective cover 1 to be considered after each elevator 100 use. Therefore, the initial investment for installing the elevator 100 can be reduced.

According to the protective cover 1 according to Embodiment 1, the top plate 11 is arranged on the side wall plate 12 so as to be detachable from the side wall plate 12 . Therefore, the operator can remove the top plate 11 from the side wall plate 12 and work on the upper pulley 105c from above the upper pulley 105c in the vertical direction. As a result, the work time for the upper pulley 105c of the speed control mechanism 105 can be shortened.

According to the protective cover 1 according to Embodiment 1, the cover body 10 has the window member 25 . A second opening 14 is provided in the cover body 10 , and the window member 25 is installed in the cover body 10 so as to close the second opening 14 . The window member 25 is made of a material that allows the protection space 10a to be seen from the outside of the cover body 10 through the window member 25 . Accordingly, the operator can inspect the upper pulley 105c through the window member 25 from the outside of the cover body 10. FIG. This eliminates the need to remove the cover body 10 from the upper pulley 105c when inspecting the upper pulley 105c. Therefore, it is possible to shorten the working time for the upper pulley 105c of the speed control mechanism 105. FIG.

According to the protective cover 1 according to Embodiment 1, the lighting device 40 and the power supply device 50 that supplies power to the lighting device 40 are further provided. The lighting device 40 also has a lighting fixture 40 a and a switch 40 b , and the switch 40 b is provided so as to be exposed to the outside of the cover body 10 . Further, by operating the switch 40b, power can be supplied from the power supply device 50 to the lighting fixture 40a. Therefore, the operator can visually inspect the upper pulley 105c through the window member 25 from the outside of the cover body 10. FIG. Furthermore, when an operator visually inspects the upper pulley 105c, the lighting device 40a can be turned on to illuminate the protected space 10a. As a result, the efficiency of the inspection work of the upper pulley 105c can be improved, and the work time for the work on the upper pulley 105c of the speed control mechanism 105 can be shortened.

According to the protective cover 1 according to Embodiment 1, the plurality of fixing members 30 are arranged facing the floor surface 120a. Therefore, the protective cover 1 can be installed on the floor surface 120a. As a result, no special environment is required for installation of the protective cover 1 .

According to the protective cover 1 according to Embodiment 1, when the protective cover 1 is arranged on the floor surface 120a, the gap between the lower end portion of the cover body 10 facing the floor surface 120a and the floor surface 120a is 5 mm. It is below. Therefore, small animals cannot enter the protection space 10a. As a result, it is possible to reduce the occurrence of malfunctions of the speed control mechanism 105 due to small animals.

It should be noted that in Embodiment 1, the protective cover 1 is fixed by tightening nuts on a plurality of screw members provided on the floor surface 120a that are inserted into the holes of the second plate portion 30b. However, it is not limited to this. For example, instead of providing a plurality of screw members on the floor surface 120a, hook-and-loop fasteners may be arranged. Hook-and-loop fasteners are attached to a portion of the floor surface 120a corresponding to the second plate portion 30b and a portion of the second plate portion 30b corresponding to the floor surface 120a. By installing the protective cover 1 so that both hook-and-loop fasteners are put together, the hook-and-loop fasteners are connected to each other. Thereby, the movement of the protective cover 1 in the direction along the floor surface 120a can be restricted. That is, a material that increases the coefficient of friction in the direction along the floor surface 120a between the second plate portion 30b and the floor surface 120a may be arranged between the second plate portion 30b and the floor surface 120a. Thereby, the movement of the protective cover 1 with respect to the floor surface 120a can be restricted.

Embodiment 1. Modification 1 of
FIG. 5 is a perspective view showing protective cover 1 according to Modification 1 of Embodiment 1. As shown in FIG. In Embodiment 1, each fixing member 30 is arranged such that the second plate portion 30b faces the floor surface 120a. In Modified Example 1 of Embodiment 1, the second plate portion 30b of at least one fixing member 30 among the plurality of fixing members 30 is arranged to face the duct cover 121, which is a structure arranged in the machine room 120. , the fixing member 30 is arranged on the first side plate 12c.

Therefore, the fixing member 30 is arranged facing the structure 121 . Since the configuration other than this is the same as that of the first embodiment, description thereof is omitted.

The protective cover 1 is fixed by at least one fixing member 30 and the duct cover 121. The duct cover 121 is formed with a screw hole (not shown) at a position corresponding to the second plate hole 30c.

The fixing member 30 further has a fixing screw 31 . The fixing screw 31 passes through the second plate hole 30c and is tightened to the screw hole of the duct cover 121. As shown in FIG. As a result, the fixing member 30 is sandwiched between the duct cover 121 and the fixing screw 31, and the protective cover 1 is fixed on the floor surface 120a.

According to the protective cover 1 according to Modification 1 of Embodiment 1, at least one fixing member 30 among the plurality of fixing members 30 is arranged to face the duct cover 121, which is a structure arranged in the machine room 120. It is As a result, there is no need to prepare a special fixing environment for installing the protective cover 1 .

Note that in Modification 1 of Embodiment 1, protective cover 1 is fixed to duct cover 121 by at least one fixing member 30 out of a plurality of fixing members 30 . However, it is not limited to this. The protective cover 1 can be fixed to an appropriate structure other than the duct cover 121 arranged inside the machine room 120 . Further, if desired, the fixation member 30 may be oriented to face a suitable structure. As a result, the protective cover 1 can be appropriately adapted to each of the existing elevators 100 .

Further, in Embodiment 1 and Modification 1 of Embodiment 1, the first opening 13 is formed in the front plate 12a. However, it is not limited to this. The first opening 13 may be formed in any side wall plate 12 . It should be noted that if the opening area of the first opening 13 is large, work on the speed control mechanism 105 will be easier.

Further, in Embodiment 1 and Modification 1 of Embodiment 1, the second opening 14 is formed in the first side plate 12c. However, it is not limited to this. The second opening 14 may be formed in any side wall plate 12 . Also, the second opening 14 may be formed in the top plate 11 . Furthermore, a plurality of second openings 14 may be formed.

Further, in Embodiment 1 and Modification 1 of Embodiment 1, the window member 25 is made of an optically transparent member. However, it is not limited to this. The window member 25 may be made of a material that allows the protection space 10a to be seen from the outside of the cover body 10 through the window member 25 .

Therefore, the window member 25 may be a plate with holes, a net, or an assembly of a plurality of bars arranged so that the protective space 10a can be seen through the gaps between the bars. good too. Moreover, when the window member 25 has a gap such as a hole or gap, the size of the gap must be such that small animals cannot enter through the gap.

Further, in Embodiment 1 and Modification 1 of Embodiment 1, the protective cover 1 includes a plurality of fixing members 30 . However, it is not limited to this. The number of fixing members 30 can be set as appropriate. The number of fixing members 30 may be one as long as the protective cover 1 can be fixed with one fixing member 30 .

Also, in Embodiment 1 and Modification 1 of Embodiment 1, the power supply device 50 has a battery. However, it is not limited to this. The power supply device 50 only needs to be able to supply power to the lighting device 40 . For example, the power supply device 50 may be further connected to an external power supply mechanism, and power may be supplied to the power supply device 50 from the power supply mechanism.

In addition, a display may be made on the protective cover 1 of Embodiment 1 and Modification 1 of Embodiment 1 to call the operator's attention. For example, a label with a message such as "There is a speed control mechanism! Be careful!" Moreover, yellow and black striped patterns may be attached to the four sides around the top plate 11 .

1 Protective cover, 10 Cover body, 10a Protective space, 11 Top plate, 12 Side wall plate, 12a Front plate, 12b Rear plate, 12c First side plate, 12d Second side plate, 13 First opening, 14 Second opening, 20 Inspection Door 21 Door portion 22 Lock mechanism 25 Window member 30 Fixing member 30a First plate portion 30b Second plate portion 30c Second plate hole 31 Fixing screw 40 Lighting device 40a Lighting fixture 40b Switch, 50 power supply, 100 elevator, 101 hoistway, 102 car, 103 main rope, 104 drive mechanism, 105 speed control mechanism, 105a speed control mechanism, 105b speed control rope, 105c upper pulley, 120 machine room, 120a floor Face, 121 duct cover (structure).

Claims

a cover body;
an inspection door;
a fixing member for fixing the cover body to a machine room of an elevator;
with
The cover main body includes a top plate, side wall plates arranged along the contour of the top plate,
has
The top plate and the side wall plate form a protective space surrounded by the top plate and the side wall plate,
The side wall plate is provided with a first opening,
The inspection door is arranged in the cover body so as to be able to open and close the first opening,
The cover body is arranged on the floor surface of the machine room so that an upper pulley of a speed governing mechanism installed on the floor surface of the machine room is arranged in the protective space.
protective cover.
The top plate is detachable from the side wall plate,
A protective cover according to claim 1.
The cover body further has a window member,
The cover main body is provided with a second opening,
The window member is installed so as to block the second opening,
The window member is made of a material that allows the protection space to be seen from the outside of the cover body through the window member.
3. A protective cover according to claim 1 or claim 2.
a lighting device;
a power supply device that supplies power to the lighting device;
further comprising
The lighting device includes a switch, a lighting fixture,
has
The switch is provided so as to be exposed toward the outside of the cover body,
By operating the switch, the power can be supplied from the power supply device to the lighting fixture.
4. Protective cover according to any one of claims 1-3.
The fixing member is arranged to face the floor surface,
5. Protective cover according to any one of claims 1-4.
The fixing member is arranged to face a structure arranged in the machine room,
5. Protective cover according to any one of claims 1-4.
The structure is a duct cover,
7. Protective cover according to claim 6.
With the protective cover placed on the floor, a gap between the floor and the lower end of the cover body facing the floor is 5 mm or less.
8. Protective cover according to any one of claims 1-7.